brintos / linux-shallow public Read only

1/*******************************************************************2 * This file is part of the Emulex Linux Device Driver for         *3 * Fibre Channel Host Bus Adapters.                                *4 * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term *5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.  *6 * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *7 * EMULEX and SLI are trademarks of Emulex.                        *8 * www.broadcom.com                                                *9 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *10 *                                                                 *11 * This program is free software; you can redistribute it and/or   *12 * modify it under the terms of version 2 of the GNU General       *13 * Public License as published by the Free Software Foundation.    *14 * This program is distributed in the hope that it will be useful. *15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *19 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *20 * more details, a copy of which can be found in the file COPYING  *21 * included with this package.                                     *22 *******************************************************************/23 24#include <linux/blkdev.h>25#include <linux/delay.h>26#include <linux/dma-mapping.h>27#include <linux/idr.h>28#include <linux/interrupt.h>29#include <linux/module.h>30#include <linux/kthread.h>31#include <linux/pci.h>32#include <linux/spinlock.h>33#include <linux/sched/clock.h>34#include <linux/ctype.h>35#include <linux/slab.h>36#include <linux/firmware.h>37#include <linux/miscdevice.h>38#include <linux/percpu.h>39#include <linux/irq.h>40#include <linux/bitops.h>41#include <linux/crash_dump.h>42#include <linux/cpu.h>43#include <linux/cpuhotplug.h>44 45#include <scsi/scsi.h>46#include <scsi/scsi_device.h>47#include <scsi/scsi_host.h>48#include <scsi/scsi_transport_fc.h>49#include <scsi/scsi_tcq.h>50#include <scsi/fc/fc_fs.h>51 52#include "lpfc_hw4.h"53#include "lpfc_hw.h"54#include "lpfc_sli.h"55#include "lpfc_sli4.h"56#include "lpfc_nl.h"57#include "lpfc_disc.h"58#include "lpfc.h"59#include "lpfc_scsi.h"60#include "lpfc_nvme.h"61#include "lpfc_logmsg.h"62#include "lpfc_crtn.h"63#include "lpfc_vport.h"64#include "lpfc_version.h"65#include "lpfc_ids.h"66 67static enum cpuhp_state lpfc_cpuhp_state;68/* Used when mapping IRQ vectors in a driver centric manner */69static uint32_t lpfc_present_cpu;70static bool lpfc_pldv_detect;71 72static void __lpfc_cpuhp_remove(struct lpfc_hba *phba);73static void lpfc_cpuhp_remove(struct lpfc_hba *phba);74static void lpfc_cpuhp_add(struct lpfc_hba *phba);75static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);76static int lpfc_post_rcv_buf(struct lpfc_hba *);77static int lpfc_sli4_queue_verify(struct lpfc_hba *);78static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);79static int lpfc_setup_endian_order(struct lpfc_hba *);80static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);81static void lpfc_free_els_sgl_list(struct lpfc_hba *);82static void lpfc_free_nvmet_sgl_list(struct lpfc_hba *);83static void lpfc_init_sgl_list(struct lpfc_hba *);84static int lpfc_init_active_sgl_array(struct lpfc_hba *);85static void lpfc_free_active_sgl(struct lpfc_hba *);86static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);87static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);88static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);89static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);90static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);91static void lpfc_sli4_disable_intr(struct lpfc_hba *);92static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);93static void lpfc_sli4_oas_verify(struct lpfc_hba *phba);94static uint16_t lpfc_find_cpu_handle(struct lpfc_hba *, uint16_t, int);95static void lpfc_setup_bg(struct lpfc_hba *, struct Scsi_Host *);96static int lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *);97static void lpfc_sli4_async_cmstat_evt(struct lpfc_hba *phba);98static void lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba);99 100static struct scsi_transport_template *lpfc_transport_template = NULL;101static struct scsi_transport_template *lpfc_vport_transport_template = NULL;102static DEFINE_IDR(lpfc_hba_index);103#define LPFC_NVMET_BUF_POST 254104static int lpfc_vmid_res_alloc(struct lpfc_hba *phba, struct lpfc_vport *vport);105static void lpfc_cgn_update_tstamp(struct lpfc_hba *phba, struct lpfc_cgn_ts *ts);106 107/**108 * lpfc_config_port_prep - Perform lpfc initialization prior to config port109 * @phba: pointer to lpfc hba data structure.110 *111 * This routine will do LPFC initialization prior to issuing the CONFIG_PORT112 * mailbox command. It retrieves the revision information from the HBA and113 * collects the Vital Product Data (VPD) about the HBA for preparing the114 * configuration of the HBA.115 *116 * Return codes:117 *   0 - success.118 *   -ERESTART - requests the SLI layer to reset the HBA and try again.119 *   Any other value - indicates an error.120 **/121int122lpfc_config_port_prep(struct lpfc_hba *phba)123{124	lpfc_vpd_t *vp = &phba->vpd;125	int i = 0, rc;126	LPFC_MBOXQ_t *pmb;127	MAILBOX_t *mb;128	char *lpfc_vpd_data = NULL;129	uint16_t offset = 0;130	static char licensed[56] =131		    "key unlock for use with gnu public licensed code only\0";132	static int init_key = 1;133 134	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);135	if (!pmb) {136		phba->link_state = LPFC_HBA_ERROR;137		return -ENOMEM;138	}139 140	mb = &pmb->u.mb;141	phba->link_state = LPFC_INIT_MBX_CMDS;142 143	if (lpfc_is_LC_HBA(phba->pcidev->device)) {144		if (init_key) {145			uint32_t *ptext = (uint32_t *) licensed;146 147			for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)148				*ptext = cpu_to_be32(*ptext);149			init_key = 0;150		}151 152		lpfc_read_nv(phba, pmb);153		memset((char*)mb->un.varRDnvp.rsvd3, 0,154			sizeof (mb->un.varRDnvp.rsvd3));155		memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,156			 sizeof (licensed));157 158		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);159 160		if (rc != MBX_SUCCESS) {161			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,162					"0324 Config Port initialization "163					"error, mbxCmd x%x READ_NVPARM, "164					"mbxStatus x%x\n",165					mb->mbxCommand, mb->mbxStatus);166			mempool_free(pmb, phba->mbox_mem_pool);167			return -ERESTART;168		}169		memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,170		       sizeof(phba->wwnn));171		memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,172		       sizeof(phba->wwpn));173	}174 175	/*176	 * Clear all option bits except LPFC_SLI3_BG_ENABLED,177	 * which was already set in lpfc_get_cfgparam()178	 */179	phba->sli3_options &= (uint32_t)LPFC_SLI3_BG_ENABLED;180 181	/* Setup and issue mailbox READ REV command */182	lpfc_read_rev(phba, pmb);183	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);184	if (rc != MBX_SUCCESS) {185		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,186				"0439 Adapter failed to init, mbxCmd x%x "187				"READ_REV, mbxStatus x%x\n",188				mb->mbxCommand, mb->mbxStatus);189		mempool_free( pmb, phba->mbox_mem_pool);190		return -ERESTART;191	}192 193 194	/*195	 * The value of rr must be 1 since the driver set the cv field to 1.196	 * This setting requires the FW to set all revision fields.197	 */198	if (mb->un.varRdRev.rr == 0) {199		vp->rev.rBit = 0;200		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,201				"0440 Adapter failed to init, READ_REV has "202				"missing revision information.\n");203		mempool_free(pmb, phba->mbox_mem_pool);204		return -ERESTART;205	}206 207	if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {208		mempool_free(pmb, phba->mbox_mem_pool);209		return -EINVAL;210	}211 212	/* Save information as VPD data */213	vp->rev.rBit = 1;214	memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));215	vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;216	memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);217	vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;218	memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);219	vp->rev.biuRev = mb->un.varRdRev.biuRev;220	vp->rev.smRev = mb->un.varRdRev.smRev;221	vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;222	vp->rev.endecRev = mb->un.varRdRev.endecRev;223	vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;224	vp->rev.fcphLow = mb->un.varRdRev.fcphLow;225	vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;226	vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;227	vp->rev.postKernRev = mb->un.varRdRev.postKernRev;228	vp->rev.opFwRev = mb->un.varRdRev.opFwRev;229 230	/* If the sli feature level is less then 9, we must231	 * tear down all RPIs and VPIs on link down if NPIV232	 * is enabled.233	 */234	if (vp->rev.feaLevelHigh < 9)235		phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;236 237	if (lpfc_is_LC_HBA(phba->pcidev->device))238		memcpy(phba->RandomData, (char *)&mb->un.varWords[24],239						sizeof (phba->RandomData));240 241	/* Get adapter VPD information */242	lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);243	if (!lpfc_vpd_data)244		goto out_free_mbox;245	do {246		lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);247		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);248 249		if (rc != MBX_SUCCESS) {250			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,251					"0441 VPD not present on adapter, "252					"mbxCmd x%x DUMP VPD, mbxStatus x%x\n",253					mb->mbxCommand, mb->mbxStatus);254			mb->un.varDmp.word_cnt = 0;255		}256		/* dump mem may return a zero when finished or we got a257		 * mailbox error, either way we are done.258		 */259		if (mb->un.varDmp.word_cnt == 0)260			break;261 262		if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)263			mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;264		lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,265				      lpfc_vpd_data + offset,266				      mb->un.varDmp.word_cnt);267		offset += mb->un.varDmp.word_cnt;268	} while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);269 270	lpfc_parse_vpd(phba, lpfc_vpd_data, offset);271 272	kfree(lpfc_vpd_data);273out_free_mbox:274	mempool_free(pmb, phba->mbox_mem_pool);275	return 0;276}277 278/**279 * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd280 * @phba: pointer to lpfc hba data structure.281 * @pmboxq: pointer to the driver internal queue element for mailbox command.282 *283 * This is the completion handler for driver's configuring asynchronous event284 * mailbox command to the device. If the mailbox command returns successfully,285 * it will set internal async event support flag to 1; otherwise, it will286 * set internal async event support flag to 0.287 **/288static void289lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)290{291	if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)292		phba->temp_sensor_support = 1;293	else294		phba->temp_sensor_support = 0;295	mempool_free(pmboxq, phba->mbox_mem_pool);296	return;297}298 299/**300 * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler301 * @phba: pointer to lpfc hba data structure.302 * @pmboxq: pointer to the driver internal queue element for mailbox command.303 *304 * This is the completion handler for dump mailbox command for getting305 * wake up parameters. When this command complete, the response contain306 * Option rom version of the HBA. This function translate the version number307 * into a human readable string and store it in OptionROMVersion.308 **/309static void310lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)311{312	struct prog_id *prg;313	uint32_t prog_id_word;314	char dist = ' ';315	/* character array used for decoding dist type. */316	char dist_char[] = "nabx";317 318	if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {319		mempool_free(pmboxq, phba->mbox_mem_pool);320		return;321	}322 323	prg = (struct prog_id *) &prog_id_word;324 325	/* word 7 contain option rom version */326	prog_id_word = pmboxq->u.mb.un.varWords[7];327 328	/* Decode the Option rom version word to a readable string */329	dist = dist_char[prg->dist];330 331	if ((prg->dist == 3) && (prg->num == 0))332		snprintf(phba->OptionROMVersion, 32, "%d.%d%d",333			prg->ver, prg->rev, prg->lev);334	else335		snprintf(phba->OptionROMVersion, 32, "%d.%d%d%c%d",336			prg->ver, prg->rev, prg->lev,337			dist, prg->num);338	mempool_free(pmboxq, phba->mbox_mem_pool);339	return;340}341 342/**343 * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,344 * @vport: pointer to lpfc vport data structure.345 *346 *347 * Return codes348 *   None.349 **/350void351lpfc_update_vport_wwn(struct lpfc_vport *vport)352{353	struct lpfc_hba *phba = vport->phba;354 355	/*356	 * If the name is empty or there exists a soft name357	 * then copy the service params name, otherwise use the fc name358	 */359	if (vport->fc_nodename.u.wwn[0] == 0)360		memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,361			sizeof(struct lpfc_name));362	else363		memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,364			sizeof(struct lpfc_name));365 366	/*367	 * If the port name has changed, then set the Param changes flag368	 * to unreg the login369	 */370	if (vport->fc_portname.u.wwn[0] != 0 &&371		memcmp(&vport->fc_portname, &vport->fc_sparam.portName,372		       sizeof(struct lpfc_name))) {373		vport->vport_flag |= FAWWPN_PARAM_CHG;374 375		if (phba->sli_rev == LPFC_SLI_REV4 &&376		    vport->port_type == LPFC_PHYSICAL_PORT &&377		    phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_FABRIC) {378			if (!(phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG))379				phba->sli4_hba.fawwpn_flag &=380						~LPFC_FAWWPN_FABRIC;381			lpfc_printf_log(phba, KERN_INFO,382					LOG_SLI | LOG_DISCOVERY | LOG_ELS,383					"2701 FA-PWWN change WWPN from %llx to "384					"%llx: vflag x%x fawwpn_flag x%x\n",385					wwn_to_u64(vport->fc_portname.u.wwn),386					wwn_to_u64387					   (vport->fc_sparam.portName.u.wwn),388					vport->vport_flag,389					phba->sli4_hba.fawwpn_flag);390			memcpy(&vport->fc_portname, &vport->fc_sparam.portName,391			       sizeof(struct lpfc_name));392		}393	}394 395	if (vport->fc_portname.u.wwn[0] == 0)396		memcpy(&vport->fc_portname, &vport->fc_sparam.portName,397		       sizeof(struct lpfc_name));398	else399		memcpy(&vport->fc_sparam.portName, &vport->fc_portname,400		       sizeof(struct lpfc_name));401}402 403/**404 * lpfc_config_port_post - Perform lpfc initialization after config port405 * @phba: pointer to lpfc hba data structure.406 *407 * This routine will do LPFC initialization after the CONFIG_PORT mailbox408 * command call. It performs all internal resource and state setups on the409 * port: post IOCB buffers, enable appropriate host interrupt attentions,410 * ELS ring timers, etc.411 *412 * Return codes413 *   0 - success.414 *   Any other value - error.415 **/416int417lpfc_config_port_post(struct lpfc_hba *phba)418{419	struct lpfc_vport *vport = phba->pport;420	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);421	LPFC_MBOXQ_t *pmb;422	MAILBOX_t *mb;423	struct lpfc_dmabuf *mp;424	struct lpfc_sli *psli = &phba->sli;425	uint32_t status, timeout;426	int i, j;427	int rc;428 429	spin_lock_irq(&phba->hbalock);430	/*431	 * If the Config port completed correctly the HBA is not432	 * over heated any more.433	 */434	if (phba->over_temp_state == HBA_OVER_TEMP)435		phba->over_temp_state = HBA_NORMAL_TEMP;436	spin_unlock_irq(&phba->hbalock);437 438	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);439	if (!pmb) {440		phba->link_state = LPFC_HBA_ERROR;441		return -ENOMEM;442	}443	mb = &pmb->u.mb;444 445	/* Get login parameters for NID.  */446	rc = lpfc_read_sparam(phba, pmb, 0);447	if (rc) {448		mempool_free(pmb, phba->mbox_mem_pool);449		return -ENOMEM;450	}451 452	pmb->vport = vport;453	if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {454		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,455				"0448 Adapter failed init, mbxCmd x%x "456				"READ_SPARM mbxStatus x%x\n",457				mb->mbxCommand, mb->mbxStatus);458		phba->link_state = LPFC_HBA_ERROR;459		lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);460		return -EIO;461	}462 463	mp = pmb->ctx_buf;464 465	/* This dmabuf was allocated by lpfc_read_sparam. The dmabuf is no466	 * longer needed.  Prevent unintended ctx_buf access as the mbox is467	 * reused.468	 */469	memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));470	lpfc_mbuf_free(phba, mp->virt, mp->phys);471	kfree(mp);472	pmb->ctx_buf = NULL;473	lpfc_update_vport_wwn(vport);474 475	/* Update the fc_host data structures with new wwn. */476	fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);477	fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);478	fc_host_max_npiv_vports(shost) = phba->max_vpi;479 480	/* If no serial number in VPD data, use low 6 bytes of WWNN */481	/* This should be consolidated into parse_vpd ? - mr */482	if (phba->SerialNumber[0] == 0) {483		uint8_t *outptr;484 485		outptr = &vport->fc_nodename.u.s.IEEE[0];486		for (i = 0; i < 12; i++) {487			status = *outptr++;488			j = ((status & 0xf0) >> 4);489			if (j <= 9)490				phba->SerialNumber[i] =491				    (char)((uint8_t) 0x30 + (uint8_t) j);492			else493				phba->SerialNumber[i] =494				    (char)((uint8_t) 0x61 + (uint8_t) (j - 10));495			i++;496			j = (status & 0xf);497			if (j <= 9)498				phba->SerialNumber[i] =499				    (char)((uint8_t) 0x30 + (uint8_t) j);500			else501				phba->SerialNumber[i] =502				    (char)((uint8_t) 0x61 + (uint8_t) (j - 10));503		}504	}505 506	lpfc_read_config(phba, pmb);507	pmb->vport = vport;508	if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {509		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,510				"0453 Adapter failed to init, mbxCmd x%x "511				"READ_CONFIG, mbxStatus x%x\n",512				mb->mbxCommand, mb->mbxStatus);513		phba->link_state = LPFC_HBA_ERROR;514		mempool_free( pmb, phba->mbox_mem_pool);515		return -EIO;516	}517 518	/* Check if the port is disabled */519	lpfc_sli_read_link_ste(phba);520 521	/* Reset the DFT_HBA_Q_DEPTH to the max xri  */522	if (phba->cfg_hba_queue_depth > mb->un.varRdConfig.max_xri) {523		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,524				"3359 HBA queue depth changed from %d to %d\n",525				phba->cfg_hba_queue_depth,526				mb->un.varRdConfig.max_xri);527		phba->cfg_hba_queue_depth = mb->un.varRdConfig.max_xri;528	}529 530	phba->lmt = mb->un.varRdConfig.lmt;531 532	/* Get the default values for Model Name and Description */533	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);534 535	phba->link_state = LPFC_LINK_DOWN;536 537	/* Only process IOCBs on ELS ring till hba_state is READY */538	if (psli->sli3_ring[LPFC_EXTRA_RING].sli.sli3.cmdringaddr)539		psli->sli3_ring[LPFC_EXTRA_RING].flag |= LPFC_STOP_IOCB_EVENT;540	if (psli->sli3_ring[LPFC_FCP_RING].sli.sli3.cmdringaddr)541		psli->sli3_ring[LPFC_FCP_RING].flag |= LPFC_STOP_IOCB_EVENT;542 543	/* Post receive buffers for desired rings */544	if (phba->sli_rev != 3)545		lpfc_post_rcv_buf(phba);546 547	/*548	 * Configure HBA MSI-X attention conditions to messages if MSI-X mode549	 */550	if (phba->intr_type == MSIX) {551		rc = lpfc_config_msi(phba, pmb);552		if (rc) {553			mempool_free(pmb, phba->mbox_mem_pool);554			return -EIO;555		}556		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);557		if (rc != MBX_SUCCESS) {558			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,559					"0352 Config MSI mailbox command "560					"failed, mbxCmd x%x, mbxStatus x%x\n",561					pmb->u.mb.mbxCommand,562					pmb->u.mb.mbxStatus);563			mempool_free(pmb, phba->mbox_mem_pool);564			return -EIO;565		}566	}567 568	spin_lock_irq(&phba->hbalock);569	/* Initialize ERATT handling flag */570	clear_bit(HBA_ERATT_HANDLED, &phba->hba_flag);571 572	/* Enable appropriate host interrupts */573	if (lpfc_readl(phba->HCregaddr, &status)) {574		spin_unlock_irq(&phba->hbalock);575		return -EIO;576	}577	status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;578	if (psli->num_rings > 0)579		status |= HC_R0INT_ENA;580	if (psli->num_rings > 1)581		status |= HC_R1INT_ENA;582	if (psli->num_rings > 2)583		status |= HC_R2INT_ENA;584	if (psli->num_rings > 3)585		status |= HC_R3INT_ENA;586 587	if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&588	    (phba->cfg_poll & DISABLE_FCP_RING_INT))589		status &= ~(HC_R0INT_ENA);590 591	writel(status, phba->HCregaddr);592	readl(phba->HCregaddr); /* flush */593	spin_unlock_irq(&phba->hbalock);594 595	/* Set up ring-0 (ELS) timer */596	timeout = phba->fc_ratov * 2;597	mod_timer(&vport->els_tmofunc,598		  jiffies + msecs_to_jiffies(1000 * timeout));599	/* Set up heart beat (HB) timer */600	mod_timer(&phba->hb_tmofunc,601		  jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));602	clear_bit(HBA_HBEAT_INP, &phba->hba_flag);603	clear_bit(HBA_HBEAT_TMO, &phba->hba_flag);604	phba->last_completion_time = jiffies;605	/* Set up error attention (ERATT) polling timer */606	mod_timer(&phba->eratt_poll,607		  jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));608 609	if (test_bit(LINK_DISABLED, &phba->hba_flag)) {610		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,611				"2598 Adapter Link is disabled.\n");612		lpfc_down_link(phba, pmb);613		pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;614		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);615		if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {616			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,617					"2599 Adapter failed to issue DOWN_LINK"618					" mbox command rc 0x%x\n", rc);619 620			mempool_free(pmb, phba->mbox_mem_pool);621			return -EIO;622		}623	} else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {624		mempool_free(pmb, phba->mbox_mem_pool);625		rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);626		if (rc)627			return rc;628	}629	/* MBOX buffer will be freed in mbox compl */630	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);631	if (!pmb) {632		phba->link_state = LPFC_HBA_ERROR;633		return -ENOMEM;634	}635 636	lpfc_config_async(phba, pmb, LPFC_ELS_RING);637	pmb->mbox_cmpl = lpfc_config_async_cmpl;638	pmb->vport = phba->pport;639	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);640 641	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {642		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,643				"0456 Adapter failed to issue "644				"ASYNCEVT_ENABLE mbox status x%x\n",645				rc);646		mempool_free(pmb, phba->mbox_mem_pool);647	}648 649	/* Get Option rom version */650	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);651	if (!pmb) {652		phba->link_state = LPFC_HBA_ERROR;653		return -ENOMEM;654	}655 656	lpfc_dump_wakeup_param(phba, pmb);657	pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;658	pmb->vport = phba->pport;659	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);660 661	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {662		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,663				"0435 Adapter failed "664				"to get Option ROM version status x%x\n", rc);665		mempool_free(pmb, phba->mbox_mem_pool);666	}667 668	return 0;669}670 671/**672 * lpfc_sli4_refresh_params - update driver copy of params.673 * @phba: Pointer to HBA context object.674 *675 * This is called to refresh driver copy of dynamic fields from the676 * common_get_sli4_parameters descriptor.677 **/678int679lpfc_sli4_refresh_params(struct lpfc_hba *phba)680{681	LPFC_MBOXQ_t *mboxq;682	struct lpfc_mqe *mqe;683	struct lpfc_sli4_parameters *mbx_sli4_parameters;684	int length, rc;685 686	mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);687	if (!mboxq)688		return -ENOMEM;689 690	mqe = &mboxq->u.mqe;691	/* Read the port's SLI4 Config Parameters */692	length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -693		  sizeof(struct lpfc_sli4_cfg_mhdr));694	lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,695			 LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,696			 length, LPFC_SLI4_MBX_EMBED);697 698	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);699	if (unlikely(rc)) {700		mempool_free(mboxq, phba->mbox_mem_pool);701		return rc;702	}703	mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;704	phba->sli4_hba.pc_sli4_params.mi_cap =705		bf_get(cfg_mi_ver, mbx_sli4_parameters);706 707	/* Are we forcing MI off via module parameter? */708	if (phba->cfg_enable_mi)709		phba->sli4_hba.pc_sli4_params.mi_ver =710			bf_get(cfg_mi_ver, mbx_sli4_parameters);711	else712		phba->sli4_hba.pc_sli4_params.mi_ver = 0;713 714	phba->sli4_hba.pc_sli4_params.cmf =715			bf_get(cfg_cmf, mbx_sli4_parameters);716	phba->sli4_hba.pc_sli4_params.pls =717			bf_get(cfg_pvl, mbx_sli4_parameters);718 719	mempool_free(mboxq, phba->mbox_mem_pool);720	return rc;721}722 723/**724 * lpfc_hba_init_link - Initialize the FC link725 * @phba: pointer to lpfc hba data structure.726 * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT727 *728 * This routine will issue the INIT_LINK mailbox command call.729 * It is available to other drivers through the lpfc_hba data730 * structure for use as a delayed link up mechanism with the731 * module parameter lpfc_suppress_link_up.732 *733 * Return code734 *		0 - success735 *		Any other value - error736 **/737static int738lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)739{740	return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);741}742 743/**744 * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology745 * @phba: pointer to lpfc hba data structure.746 * @fc_topology: desired fc topology.747 * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT748 *749 * This routine will issue the INIT_LINK mailbox command call.750 * It is available to other drivers through the lpfc_hba data751 * structure for use as a delayed link up mechanism with the752 * module parameter lpfc_suppress_link_up.753 *754 * Return code755 *              0 - success756 *              Any other value - error757 **/758int759lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,760			       uint32_t flag)761{762	struct lpfc_vport *vport = phba->pport;763	LPFC_MBOXQ_t *pmb;764	MAILBOX_t *mb;765	int rc;766 767	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);768	if (!pmb) {769		phba->link_state = LPFC_HBA_ERROR;770		return -ENOMEM;771	}772	mb = &pmb->u.mb;773	pmb->vport = vport;774 775	if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||776	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&777	     !(phba->lmt & LMT_1Gb)) ||778	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&779	     !(phba->lmt & LMT_2Gb)) ||780	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&781	     !(phba->lmt & LMT_4Gb)) ||782	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&783	     !(phba->lmt & LMT_8Gb)) ||784	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&785	     !(phba->lmt & LMT_10Gb)) ||786	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&787	     !(phba->lmt & LMT_16Gb)) ||788	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_32G) &&789	     !(phba->lmt & LMT_32Gb)) ||790	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_64G) &&791	     !(phba->lmt & LMT_64Gb))) {792		/* Reset link speed to auto */793		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,794				"1302 Invalid speed for this board:%d "795				"Reset link speed to auto.\n",796				phba->cfg_link_speed);797			phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;798	}799	lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);800	pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;801	if (phba->sli_rev < LPFC_SLI_REV4)802		lpfc_set_loopback_flag(phba);803	rc = lpfc_sli_issue_mbox(phba, pmb, flag);804	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {805		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,806				"0498 Adapter failed to init, mbxCmd x%x "807				"INIT_LINK, mbxStatus x%x\n",808				mb->mbxCommand, mb->mbxStatus);809		if (phba->sli_rev <= LPFC_SLI_REV3) {810			/* Clear all interrupt enable conditions */811			writel(0, phba->HCregaddr);812			readl(phba->HCregaddr); /* flush */813			/* Clear all pending interrupts */814			writel(0xffffffff, phba->HAregaddr);815			readl(phba->HAregaddr); /* flush */816		}817		phba->link_state = LPFC_HBA_ERROR;818		if (rc != MBX_BUSY || flag == MBX_POLL)819			mempool_free(pmb, phba->mbox_mem_pool);820		return -EIO;821	}822	phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;823	if (flag == MBX_POLL)824		mempool_free(pmb, phba->mbox_mem_pool);825 826	return 0;827}828 829/**830 * lpfc_hba_down_link - this routine downs the FC link831 * @phba: pointer to lpfc hba data structure.832 * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT833 *834 * This routine will issue the DOWN_LINK mailbox command call.835 * It is available to other drivers through the lpfc_hba data836 * structure for use to stop the link.837 *838 * Return code839 *		0 - success840 *		Any other value - error841 **/842static int843lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)844{845	LPFC_MBOXQ_t *pmb;846	int rc;847 848	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);849	if (!pmb) {850		phba->link_state = LPFC_HBA_ERROR;851		return -ENOMEM;852	}853 854	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,855			"0491 Adapter Link is disabled.\n");856	lpfc_down_link(phba, pmb);857	pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;858	rc = lpfc_sli_issue_mbox(phba, pmb, flag);859	if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {860		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,861				"2522 Adapter failed to issue DOWN_LINK"862				" mbox command rc 0x%x\n", rc);863 864		mempool_free(pmb, phba->mbox_mem_pool);865		return -EIO;866	}867	if (flag == MBX_POLL)868		mempool_free(pmb, phba->mbox_mem_pool);869 870	return 0;871}872 873/**874 * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset875 * @phba: pointer to lpfc HBA data structure.876 *877 * This routine will do LPFC uninitialization before the HBA is reset when878 * bringing down the SLI Layer.879 *880 * Return codes881 *   0 - success.882 *   Any other value - error.883 **/884int885lpfc_hba_down_prep(struct lpfc_hba *phba)886{887	struct lpfc_vport **vports;888	int i;889 890	if (phba->sli_rev <= LPFC_SLI_REV3) {891		/* Disable interrupts */892		writel(0, phba->HCregaddr);893		readl(phba->HCregaddr); /* flush */894	}895 896	if (test_bit(FC_UNLOADING, &phba->pport->load_flag))897		lpfc_cleanup_discovery_resources(phba->pport);898	else {899		vports = lpfc_create_vport_work_array(phba);900		if (vports != NULL)901			for (i = 0; i <= phba->max_vports &&902				vports[i] != NULL; i++)903				lpfc_cleanup_discovery_resources(vports[i]);904		lpfc_destroy_vport_work_array(phba, vports);905	}906	return 0;907}908 909/**910 * lpfc_sli4_free_sp_events - Cleanup sp_queue_events to free911 * rspiocb which got deferred912 *913 * @phba: pointer to lpfc HBA data structure.914 *915 * This routine will cleanup completed slow path events after HBA is reset916 * when bringing down the SLI Layer.917 *918 *919 * Return codes920 *   void.921 **/922static void923lpfc_sli4_free_sp_events(struct lpfc_hba *phba)924{925	struct lpfc_iocbq *rspiocbq;926	struct hbq_dmabuf *dmabuf;927	struct lpfc_cq_event *cq_event;928 929	clear_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag);930 931	while (!list_empty(&phba->sli4_hba.sp_queue_event)) {932		/* Get the response iocb from the head of work queue */933		spin_lock_irq(&phba->hbalock);934		list_remove_head(&phba->sli4_hba.sp_queue_event,935				 cq_event, struct lpfc_cq_event, list);936		spin_unlock_irq(&phba->hbalock);937 938		switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {939		case CQE_CODE_COMPL_WQE:940			rspiocbq = container_of(cq_event, struct lpfc_iocbq,941						 cq_event);942			lpfc_sli_release_iocbq(phba, rspiocbq);943			break;944		case CQE_CODE_RECEIVE:945		case CQE_CODE_RECEIVE_V1:946			dmabuf = container_of(cq_event, struct hbq_dmabuf,947					      cq_event);948			lpfc_in_buf_free(phba, &dmabuf->dbuf);949		}950	}951}952 953/**954 * lpfc_hba_free_post_buf - Perform lpfc uninitialization after HBA reset955 * @phba: pointer to lpfc HBA data structure.956 *957 * This routine will cleanup posted ELS buffers after the HBA is reset958 * when bringing down the SLI Layer.959 *960 *961 * Return codes962 *   void.963 **/964static void965lpfc_hba_free_post_buf(struct lpfc_hba *phba)966{967	struct lpfc_sli *psli = &phba->sli;968	struct lpfc_sli_ring *pring;969	struct lpfc_dmabuf *mp, *next_mp;970	LIST_HEAD(buflist);971	int count;972 973	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)974		lpfc_sli_hbqbuf_free_all(phba);975	else {976		/* Cleanup preposted buffers on the ELS ring */977		pring = &psli->sli3_ring[LPFC_ELS_RING];978		spin_lock_irq(&phba->hbalock);979		list_splice_init(&pring->postbufq, &buflist);980		spin_unlock_irq(&phba->hbalock);981 982		count = 0;983		list_for_each_entry_safe(mp, next_mp, &buflist, list) {984			list_del(&mp->list);985			count++;986			lpfc_mbuf_free(phba, mp->virt, mp->phys);987			kfree(mp);988		}989 990		spin_lock_irq(&phba->hbalock);991		pring->postbufq_cnt -= count;992		spin_unlock_irq(&phba->hbalock);993	}994}995 996/**997 * lpfc_hba_clean_txcmplq - Perform lpfc uninitialization after HBA reset998 * @phba: pointer to lpfc HBA data structure.999 *1000 * This routine will cleanup the txcmplq after the HBA is reset when bringing1001 * down the SLI Layer.1002 *1003 * Return codes1004 *   void1005 **/1006static void1007lpfc_hba_clean_txcmplq(struct lpfc_hba *phba)1008{1009	struct lpfc_sli *psli = &phba->sli;1010	struct lpfc_queue *qp = NULL;1011	struct lpfc_sli_ring *pring;1012	LIST_HEAD(completions);1013	int i;1014	struct lpfc_iocbq *piocb, *next_iocb;1015 1016	if (phba->sli_rev != LPFC_SLI_REV4) {1017		for (i = 0; i < psli->num_rings; i++) {1018			pring = &psli->sli3_ring[i];1019			spin_lock_irq(&phba->hbalock);1020			/* At this point in time the HBA is either reset or DOA1021			 * Nothing should be on txcmplq as it will1022			 * NEVER complete.1023			 */1024			list_splice_init(&pring->txcmplq, &completions);1025			pring->txcmplq_cnt = 0;1026			spin_unlock_irq(&phba->hbalock);1027 1028			lpfc_sli_abort_iocb_ring(phba, pring);1029		}1030		/* Cancel all the IOCBs from the completions list */1031		lpfc_sli_cancel_iocbs(phba, &completions,1032				      IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);1033		return;1034	}1035	list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {1036		pring = qp->pring;1037		if (!pring)1038			continue;1039		spin_lock_irq(&pring->ring_lock);1040		list_for_each_entry_safe(piocb, next_iocb,1041					 &pring->txcmplq, list)1042			piocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;1043		list_splice_init(&pring->txcmplq, &completions);1044		pring->txcmplq_cnt = 0;1045		spin_unlock_irq(&pring->ring_lock);1046		lpfc_sli_abort_iocb_ring(phba, pring);1047	}1048	/* Cancel all the IOCBs from the completions list */1049	lpfc_sli_cancel_iocbs(phba, &completions,1050			      IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);1051}1052 1053/**1054 * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset1055 * @phba: pointer to lpfc HBA data structure.1056 *1057 * This routine will do uninitialization after the HBA is reset when bring1058 * down the SLI Layer.1059 *1060 * Return codes1061 *   0 - success.1062 *   Any other value - error.1063 **/1064static int1065lpfc_hba_down_post_s3(struct lpfc_hba *phba)1066{1067	lpfc_hba_free_post_buf(phba);1068	lpfc_hba_clean_txcmplq(phba);1069	return 0;1070}1071 1072/**1073 * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset1074 * @phba: pointer to lpfc HBA data structure.1075 *1076 * This routine will do uninitialization after the HBA is reset when bring1077 * down the SLI Layer.1078 *1079 * Return codes1080 *   0 - success.1081 *   Any other value - error.1082 **/1083static int1084lpfc_hba_down_post_s4(struct lpfc_hba *phba)1085{1086	struct lpfc_io_buf *psb, *psb_next;1087	struct lpfc_async_xchg_ctx *ctxp, *ctxp_next;1088	struct lpfc_sli4_hdw_queue *qp;1089	LIST_HEAD(aborts);1090	LIST_HEAD(nvme_aborts);1091	LIST_HEAD(nvmet_aborts);1092	struct lpfc_sglq *sglq_entry = NULL;1093	int cnt, idx;1094 1095 1096	lpfc_sli_hbqbuf_free_all(phba);1097	lpfc_hba_clean_txcmplq(phba);1098 1099	/* At this point in time the HBA is either reset or DOA. Either1100	 * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be1101	 * on the lpfc_els_sgl_list so that it can either be freed if the1102	 * driver is unloading or reposted if the driver is restarting1103	 * the port.1104	 */1105 1106	/* sgl_list_lock required because worker thread uses this1107	 * list.1108	 */1109	spin_lock_irq(&phba->sli4_hba.sgl_list_lock);1110	list_for_each_entry(sglq_entry,1111		&phba->sli4_hba.lpfc_abts_els_sgl_list, list)1112		sglq_entry->state = SGL_FREED;1113 1114	list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,1115			&phba->sli4_hba.lpfc_els_sgl_list);1116 1117 1118	spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);1119 1120	/* abts_xxxx_buf_list_lock required because worker thread uses this1121	 * list.1122	 */1123	spin_lock_irq(&phba->hbalock);1124	cnt = 0;1125	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {1126		qp = &phba->sli4_hba.hdwq[idx];1127 1128		spin_lock(&qp->abts_io_buf_list_lock);1129		list_splice_init(&qp->lpfc_abts_io_buf_list,1130				 &aborts);1131 1132		list_for_each_entry_safe(psb, psb_next, &aborts, list) {1133			psb->pCmd = NULL;1134			psb->status = IOSTAT_SUCCESS;1135			cnt++;1136		}1137		spin_lock(&qp->io_buf_list_put_lock);1138		list_splice_init(&aborts, &qp->lpfc_io_buf_list_put);1139		qp->put_io_bufs += qp->abts_scsi_io_bufs;1140		qp->put_io_bufs += qp->abts_nvme_io_bufs;1141		qp->abts_scsi_io_bufs = 0;1142		qp->abts_nvme_io_bufs = 0;1143		spin_unlock(&qp->io_buf_list_put_lock);1144		spin_unlock(&qp->abts_io_buf_list_lock);1145	}1146	spin_unlock_irq(&phba->hbalock);1147 1148	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {1149		spin_lock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);1150		list_splice_init(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,1151				 &nvmet_aborts);1152		spin_unlock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);1153		list_for_each_entry_safe(ctxp, ctxp_next, &nvmet_aborts, list) {1154			ctxp->flag &= ~(LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP);1155			lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);1156		}1157	}1158 1159	lpfc_sli4_free_sp_events(phba);1160	return cnt;1161}1162 1163/**1164 * lpfc_hba_down_post - Wrapper func for hba down post routine1165 * @phba: pointer to lpfc HBA data structure.1166 *1167 * This routine wraps the actual SLI3 or SLI4 routine for performing1168 * uninitialization after the HBA is reset when bring down the SLI Layer.1169 *1170 * Return codes1171 *   0 - success.1172 *   Any other value - error.1173 **/1174int1175lpfc_hba_down_post(struct lpfc_hba *phba)1176{1177	return (*phba->lpfc_hba_down_post)(phba);1178}1179 1180/**1181 * lpfc_hb_timeout - The HBA-timer timeout handler1182 * @t: timer context used to obtain the pointer to lpfc hba data structure.1183 *1184 * This is the HBA-timer timeout handler registered to the lpfc driver. When1185 * this timer fires, a HBA timeout event shall be posted to the lpfc driver1186 * work-port-events bitmap and the worker thread is notified. This timeout1187 * event will be used by the worker thread to invoke the actual timeout1188 * handler routine, lpfc_hb_timeout_handler. Any periodical operations will1189 * be performed in the timeout handler and the HBA timeout event bit shall1190 * be cleared by the worker thread after it has taken the event bitmap out.1191 **/1192static void1193lpfc_hb_timeout(struct timer_list *t)1194{1195	struct lpfc_hba *phba;1196	uint32_t tmo_posted;1197	unsigned long iflag;1198 1199	phba = from_timer(phba, t, hb_tmofunc);1200 1201	/* Check for heart beat timeout conditions */1202	spin_lock_irqsave(&phba->pport->work_port_lock, iflag);1203	tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;1204	if (!tmo_posted)1205		phba->pport->work_port_events |= WORKER_HB_TMO;1206	spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);1207 1208	/* Tell the worker thread there is work to do */1209	if (!tmo_posted)1210		lpfc_worker_wake_up(phba);1211	return;1212}1213 1214/**1215 * lpfc_rrq_timeout - The RRQ-timer timeout handler1216 * @t: timer context used to obtain the pointer to lpfc hba data structure.1217 *1218 * This is the RRQ-timer timeout handler registered to the lpfc driver. When1219 * this timer fires, a RRQ timeout event shall be posted to the lpfc driver1220 * work-port-events bitmap and the worker thread is notified. This timeout1221 * event will be used by the worker thread to invoke the actual timeout1222 * handler routine, lpfc_rrq_handler. Any periodical operations will1223 * be performed in the timeout handler and the RRQ timeout event bit shall1224 * be cleared by the worker thread after it has taken the event bitmap out.1225 **/1226static void1227lpfc_rrq_timeout(struct timer_list *t)1228{1229	struct lpfc_hba *phba;1230 1231	phba = from_timer(phba, t, rrq_tmr);1232	if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) {1233		clear_bit(HBA_RRQ_ACTIVE, &phba->hba_flag);1234		return;1235	}1236 1237	set_bit(HBA_RRQ_ACTIVE, &phba->hba_flag);1238	lpfc_worker_wake_up(phba);1239}1240 1241/**1242 * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function1243 * @phba: pointer to lpfc hba data structure.1244 * @pmboxq: pointer to the driver internal queue element for mailbox command.1245 *1246 * This is the callback function to the lpfc heart-beat mailbox command.1247 * If configured, the lpfc driver issues the heart-beat mailbox command to1248 * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the1249 * heart-beat mailbox command is issued, the driver shall set up heart-beat1250 * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks1251 * heart-beat outstanding state. Once the mailbox command comes back and1252 * no error conditions detected, the heart-beat mailbox command timer is1253 * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding1254 * state is cleared for the next heart-beat. If the timer expired with the1255 * heart-beat outstanding state set, the driver will put the HBA offline.1256 **/1257static void1258lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)1259{1260	clear_bit(HBA_HBEAT_INP, &phba->hba_flag);1261	clear_bit(HBA_HBEAT_TMO, &phba->hba_flag);1262 1263	/* Check and reset heart-beat timer if necessary */1264	mempool_free(pmboxq, phba->mbox_mem_pool);1265	if (!test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag) &&1266	    !(phba->link_state == LPFC_HBA_ERROR) &&1267	    !test_bit(FC_UNLOADING, &phba->pport->load_flag))1268		mod_timer(&phba->hb_tmofunc,1269			  jiffies +1270			  msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));1271	return;1272}1273 1274/*1275 * lpfc_idle_stat_delay_work - idle_stat tracking1276 *1277 * This routine tracks per-eq idle_stat and determines polling decisions.1278 *1279 * Return codes:1280 *   None1281 **/1282static void1283lpfc_idle_stat_delay_work(struct work_struct *work)1284{1285	struct lpfc_hba *phba = container_of(to_delayed_work(work),1286					     struct lpfc_hba,1287					     idle_stat_delay_work);1288	struct lpfc_queue *eq;1289	struct lpfc_sli4_hdw_queue *hdwq;1290	struct lpfc_idle_stat *idle_stat;1291	u32 i, idle_percent;1292	u64 wall, wall_idle, diff_wall, diff_idle, busy_time;1293 1294	if (test_bit(FC_UNLOADING, &phba->pport->load_flag))1295		return;1296 1297	if (phba->link_state == LPFC_HBA_ERROR ||1298	    test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag) ||1299	    phba->cmf_active_mode != LPFC_CFG_OFF)1300		goto requeue;1301 1302	for_each_present_cpu(i) {1303		hdwq = &phba->sli4_hba.hdwq[phba->sli4_hba.cpu_map[i].hdwq];1304		eq = hdwq->hba_eq;1305 1306		/* Skip if we've already handled this eq's primary CPU */1307		if (eq->chann != i)1308			continue;1309 1310		idle_stat = &phba->sli4_hba.idle_stat[i];1311 1312		/* get_cpu_idle_time returns values as running counters. Thus,1313		 * to know the amount for this period, the prior counter values1314		 * need to be subtracted from the current counter values.1315		 * From there, the idle time stat can be calculated as a1316		 * percentage of 100 - the sum of the other consumption times.1317		 */1318		wall_idle = get_cpu_idle_time(i, &wall, 1);1319		diff_idle = wall_idle - idle_stat->prev_idle;1320		diff_wall = wall - idle_stat->prev_wall;1321 1322		if (diff_wall <= diff_idle)1323			busy_time = 0;1324		else1325			busy_time = diff_wall - diff_idle;1326 1327		idle_percent = div64_u64(100 * busy_time, diff_wall);1328		idle_percent = 100 - idle_percent;1329 1330		if (idle_percent < 15)1331			eq->poll_mode = LPFC_QUEUE_WORK;1332		else1333			eq->poll_mode = LPFC_THREADED_IRQ;1334 1335		idle_stat->prev_idle = wall_idle;1336		idle_stat->prev_wall = wall;1337	}1338 1339requeue:1340	schedule_delayed_work(&phba->idle_stat_delay_work,1341			      msecs_to_jiffies(LPFC_IDLE_STAT_DELAY));1342}1343 1344static void1345lpfc_hb_eq_delay_work(struct work_struct *work)1346{1347	struct lpfc_hba *phba = container_of(to_delayed_work(work),1348					     struct lpfc_hba, eq_delay_work);1349	struct lpfc_eq_intr_info *eqi, *eqi_new;1350	struct lpfc_queue *eq, *eq_next;1351	unsigned char *ena_delay = NULL;1352	uint32_t usdelay;1353	int i;1354 1355	if (!phba->cfg_auto_imax ||1356	    test_bit(FC_UNLOADING, &phba->pport->load_flag))1357		return;1358 1359	if (phba->link_state == LPFC_HBA_ERROR ||1360	    test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))1361		goto requeue;1362 1363	ena_delay = kcalloc(phba->sli4_hba.num_possible_cpu, sizeof(*ena_delay),1364			    GFP_KERNEL);1365	if (!ena_delay)1366		goto requeue;1367 1368	for (i = 0; i < phba->cfg_irq_chann; i++) {1369		/* Get the EQ corresponding to the IRQ vector */1370		eq = phba->sli4_hba.hba_eq_hdl[i].eq;1371		if (!eq)1372			continue;1373		if (eq->q_mode || eq->q_flag & HBA_EQ_DELAY_CHK) {1374			eq->q_flag &= ~HBA_EQ_DELAY_CHK;1375			ena_delay[eq->last_cpu] = 1;1376		}1377	}1378 1379	for_each_present_cpu(i) {1380		eqi = per_cpu_ptr(phba->sli4_hba.eq_info, i);1381		if (ena_delay[i]) {1382			usdelay = (eqi->icnt >> 10) * LPFC_EQ_DELAY_STEP;1383			if (usdelay > LPFC_MAX_AUTO_EQ_DELAY)1384				usdelay = LPFC_MAX_AUTO_EQ_DELAY;1385		} else {1386			usdelay = 0;1387		}1388 1389		eqi->icnt = 0;1390 1391		list_for_each_entry_safe(eq, eq_next, &eqi->list, cpu_list) {1392			if (unlikely(eq->last_cpu != i)) {1393				eqi_new = per_cpu_ptr(phba->sli4_hba.eq_info,1394						      eq->last_cpu);1395				list_move_tail(&eq->cpu_list, &eqi_new->list);1396				continue;1397			}1398			if (usdelay != eq->q_mode)1399				lpfc_modify_hba_eq_delay(phba, eq->hdwq, 1,1400							 usdelay);1401		}1402	}1403 1404	kfree(ena_delay);1405 1406requeue:1407	queue_delayed_work(phba->wq, &phba->eq_delay_work,1408			   msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));1409}1410 1411/**1412 * lpfc_hb_mxp_handler - Multi-XRI pools handler to adjust XRI distribution1413 * @phba: pointer to lpfc hba data structure.1414 *1415 * For each heartbeat, this routine does some heuristic methods to adjust1416 * XRI distribution. The goal is to fully utilize free XRIs.1417 **/1418static void lpfc_hb_mxp_handler(struct lpfc_hba *phba)1419{1420	u32 i;1421	u32 hwq_count;1422 1423	hwq_count = phba->cfg_hdw_queue;1424	for (i = 0; i < hwq_count; i++) {1425		/* Adjust XRIs in private pool */1426		lpfc_adjust_pvt_pool_count(phba, i);1427 1428		/* Adjust high watermark */1429		lpfc_adjust_high_watermark(phba, i);1430 1431#ifdef LPFC_MXP_STAT1432		/* Snapshot pbl, pvt and busy count */1433		lpfc_snapshot_mxp(phba, i);1434#endif1435	}1436}1437 1438/**1439 * lpfc_issue_hb_mbox - Issues heart-beat mailbox command1440 * @phba: pointer to lpfc hba data structure.1441 *1442 * If a HB mbox is not already in progrees, this routine will allocate1443 * a LPFC_MBOXQ_t, populate it with a MBX_HEARTBEAT (0x31) command,1444 * and issue it. The HBA_HBEAT_INP flag means the command is in progress.1445 **/1446int1447lpfc_issue_hb_mbox(struct lpfc_hba *phba)1448{1449	LPFC_MBOXQ_t *pmboxq;1450	int retval;1451 1452	/* Is a Heartbeat mbox already in progress */1453	if (test_bit(HBA_HBEAT_INP, &phba->hba_flag))1454		return 0;1455 1456	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);1457	if (!pmboxq)1458		return -ENOMEM;1459 1460	lpfc_heart_beat(phba, pmboxq);1461	pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;1462	pmboxq->vport = phba->pport;1463	retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);1464 1465	if (retval != MBX_BUSY && retval != MBX_SUCCESS) {1466		mempool_free(pmboxq, phba->mbox_mem_pool);1467		return -ENXIO;1468	}1469	set_bit(HBA_HBEAT_INP, &phba->hba_flag);1470 1471	return 0;1472}1473 1474/**1475 * lpfc_issue_hb_tmo - Signals heartbeat timer to issue mbox command1476 * @phba: pointer to lpfc hba data structure.1477 *1478 * The heartbeat timer (every 5 sec) will fire. If the HBA_HBEAT_TMO1479 * flag is set, it will force a MBX_HEARTBEAT mbox command, regardless1480 * of the value of lpfc_enable_hba_heartbeat.1481 * If lpfc_enable_hba_heartbeat is set, the timeout routine will always1482 * try to issue a MBX_HEARTBEAT mbox command.1483 **/1484void1485lpfc_issue_hb_tmo(struct lpfc_hba *phba)1486{1487	if (phba->cfg_enable_hba_heartbeat)1488		return;1489	set_bit(HBA_HBEAT_TMO, &phba->hba_flag);1490}1491 1492/**1493 * lpfc_hb_timeout_handler - The HBA-timer timeout handler1494 * @phba: pointer to lpfc hba data structure.1495 *1496 * This is the actual HBA-timer timeout handler to be invoked by the worker1497 * thread whenever the HBA timer fired and HBA-timeout event posted. This1498 * handler performs any periodic operations needed for the device. If such1499 * periodic event has already been attended to either in the interrupt handler1500 * or by processing slow-ring or fast-ring events within the HBA-timer1501 * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets1502 * the timer for the next timeout period. If lpfc heart-beat mailbox command1503 * is configured and there is no heart-beat mailbox command outstanding, a1504 * heart-beat mailbox is issued and timer set properly. Otherwise, if there1505 * has been a heart-beat mailbox command outstanding, the HBA shall be put1506 * to offline.1507 **/1508void1509lpfc_hb_timeout_handler(struct lpfc_hba *phba)1510{1511	struct lpfc_vport **vports;1512	struct lpfc_dmabuf *buf_ptr;1513	int retval = 0;1514	int i, tmo;1515	struct lpfc_sli *psli = &phba->sli;1516	LIST_HEAD(completions);1517 1518	if (phba->cfg_xri_rebalancing) {1519		/* Multi-XRI pools handler */1520		lpfc_hb_mxp_handler(phba);1521	}1522 1523	vports = lpfc_create_vport_work_array(phba);1524	if (vports != NULL)1525		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {1526			lpfc_rcv_seq_check_edtov(vports[i]);1527			lpfc_fdmi_change_check(vports[i]);1528		}1529	lpfc_destroy_vport_work_array(phba, vports);1530 1531	if (phba->link_state == LPFC_HBA_ERROR ||1532	    test_bit(FC_UNLOADING, &phba->pport->load_flag) ||1533	    test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))1534		return;1535 1536	if (phba->elsbuf_cnt &&1537		(phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {1538		spin_lock_irq(&phba->hbalock);1539		list_splice_init(&phba->elsbuf, &completions);1540		phba->elsbuf_cnt = 0;1541		phba->elsbuf_prev_cnt = 0;1542		spin_unlock_irq(&phba->hbalock);1543 1544		while (!list_empty(&completions)) {1545			list_remove_head(&completions, buf_ptr,1546				struct lpfc_dmabuf, list);1547			lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);1548			kfree(buf_ptr);1549		}1550	}1551	phba->elsbuf_prev_cnt = phba->elsbuf_cnt;1552 1553	/* If there is no heart beat outstanding, issue a heartbeat command */1554	if (phba->cfg_enable_hba_heartbeat) {1555		/* If IOs are completing, no need to issue a MBX_HEARTBEAT */1556		spin_lock_irq(&phba->pport->work_port_lock);1557		if (time_after(phba->last_completion_time +1558				msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL),1559				jiffies)) {1560			spin_unlock_irq(&phba->pport->work_port_lock);1561			if (test_bit(HBA_HBEAT_INP, &phba->hba_flag))1562				tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);1563			else1564				tmo = (1000 * LPFC_HB_MBOX_INTERVAL);1565			goto out;1566		}1567		spin_unlock_irq(&phba->pport->work_port_lock);1568 1569		/* Check if a MBX_HEARTBEAT is already in progress */1570		if (test_bit(HBA_HBEAT_INP, &phba->hba_flag)) {1571			/*1572			 * If heart beat timeout called with HBA_HBEAT_INP set1573			 * we need to give the hb mailbox cmd a chance to1574			 * complete or TMO.1575			 */1576			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,1577				"0459 Adapter heartbeat still outstanding: "1578				"last compl time was %d ms.\n",1579				jiffies_to_msecs(jiffies1580					 - phba->last_completion_time));1581			tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);1582		} else {1583			if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&1584				(list_empty(&psli->mboxq))) {1585 1586				retval = lpfc_issue_hb_mbox(phba);1587				if (retval) {1588					tmo = (1000 * LPFC_HB_MBOX_INTERVAL);1589					goto out;1590				}1591				phba->skipped_hb = 0;1592			} else if (time_before_eq(phba->last_completion_time,1593					phba->skipped_hb)) {1594				lpfc_printf_log(phba, KERN_INFO, LOG_INIT,1595					"2857 Last completion time not "1596					" updated in %d ms\n",1597					jiffies_to_msecs(jiffies1598						 - phba->last_completion_time));1599			} else1600				phba->skipped_hb = jiffies;1601 1602			tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);1603			goto out;1604		}1605	} else {1606		/* Check to see if we want to force a MBX_HEARTBEAT */1607		if (test_bit(HBA_HBEAT_TMO, &phba->hba_flag)) {1608			retval = lpfc_issue_hb_mbox(phba);1609			if (retval)1610				tmo = (1000 * LPFC_HB_MBOX_INTERVAL);1611			else1612				tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);1613			goto out;1614		}1615		tmo = (1000 * LPFC_HB_MBOX_INTERVAL);1616	}1617out:1618	mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(tmo));1619}1620 1621/**1622 * lpfc_offline_eratt - Bring lpfc offline on hardware error attention1623 * @phba: pointer to lpfc hba data structure.1624 *1625 * This routine is called to bring the HBA offline when HBA hardware error1626 * other than Port Error 6 has been detected.1627 **/1628static void1629lpfc_offline_eratt(struct lpfc_hba *phba)1630{1631	struct lpfc_sli   *psli = &phba->sli;1632 1633	spin_lock_irq(&phba->hbalock);1634	psli->sli_flag &= ~LPFC_SLI_ACTIVE;1635	spin_unlock_irq(&phba->hbalock);1636	lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);1637 1638	lpfc_offline(phba);1639	lpfc_reset_barrier(phba);1640	spin_lock_irq(&phba->hbalock);1641	lpfc_sli_brdreset(phba);1642	spin_unlock_irq(&phba->hbalock);1643	lpfc_hba_down_post(phba);1644	lpfc_sli_brdready(phba, HS_MBRDY);1645	lpfc_unblock_mgmt_io(phba);1646	phba->link_state = LPFC_HBA_ERROR;1647	return;1648}1649 1650/**1651 * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention1652 * @phba: pointer to lpfc hba data structure.1653 *1654 * This routine is called to bring a SLI4 HBA offline when HBA hardware error1655 * other than Port Error 6 has been detected.1656 **/1657void1658lpfc_sli4_offline_eratt(struct lpfc_hba *phba)1659{1660	spin_lock_irq(&phba->hbalock);1661	if (phba->link_state == LPFC_HBA_ERROR &&1662		test_bit(HBA_PCI_ERR, &phba->bit_flags)) {1663		spin_unlock_irq(&phba->hbalock);1664		return;1665	}1666	phba->link_state = LPFC_HBA_ERROR;1667	spin_unlock_irq(&phba->hbalock);1668 1669	lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);1670	lpfc_sli_flush_io_rings(phba);1671	lpfc_offline(phba);1672	lpfc_hba_down_post(phba);1673	lpfc_unblock_mgmt_io(phba);1674}1675 1676/**1677 * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler1678 * @phba: pointer to lpfc hba data structure.1679 *1680 * This routine is invoked to handle the deferred HBA hardware error1681 * conditions. This type of error is indicated by HBA by setting ER11682 * and another ER bit in the host status register. The driver will1683 * wait until the ER1 bit clears before handling the error condition.1684 **/1685static void1686lpfc_handle_deferred_eratt(struct lpfc_hba *phba)1687{1688	uint32_t old_host_status = phba->work_hs;1689	struct lpfc_sli *psli = &phba->sli;1690 1691	/* If the pci channel is offline, ignore possible errors,1692	 * since we cannot communicate with the pci card anyway.1693	 */1694	if (pci_channel_offline(phba->pcidev)) {1695		clear_bit(DEFER_ERATT, &phba->hba_flag);1696		return;1697	}1698 1699	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,1700			"0479 Deferred Adapter Hardware Error "1701			"Data: x%x x%x x%x\n",1702			phba->work_hs, phba->work_status[0],1703			phba->work_status[1]);1704 1705	spin_lock_irq(&phba->hbalock);1706	psli->sli_flag &= ~LPFC_SLI_ACTIVE;1707	spin_unlock_irq(&phba->hbalock);1708 1709 1710	/*1711	 * Firmware stops when it triggred erratt. That could cause the I/Os1712	 * dropped by the firmware. Error iocb (I/O) on txcmplq and let the1713	 * SCSI layer retry it after re-establishing link.1714	 */1715	lpfc_sli_abort_fcp_rings(phba);1716 1717	/*1718	 * There was a firmware error. Take the hba offline and then1719	 * attempt to restart it.1720	 */1721	lpfc_offline_prep(phba, LPFC_MBX_WAIT);1722	lpfc_offline(phba);1723 1724	/* Wait for the ER1 bit to clear.*/1725	while (phba->work_hs & HS_FFER1) {1726		msleep(100);1727		if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {1728			phba->work_hs = UNPLUG_ERR ;1729			break;1730		}1731		/* If driver is unloading let the worker thread continue */1732		if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) {1733			phba->work_hs = 0;1734			break;1735		}1736	}1737 1738	/*1739	 * This is to ptrotect against a race condition in which1740	 * first write to the host attention register clear the1741	 * host status register.1742	 */1743	if (!phba->work_hs && !test_bit(FC_UNLOADING, &phba->pport->load_flag))1744		phba->work_hs = old_host_status & ~HS_FFER1;1745 1746	clear_bit(DEFER_ERATT, &phba->hba_flag);1747	phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);1748	phba->work_status[1] = readl(phba->MBslimaddr + 0xac);1749}1750 1751static void1752lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)1753{1754	struct lpfc_board_event_header board_event;1755	struct Scsi_Host *shost;1756 1757	board_event.event_type = FC_REG_BOARD_EVENT;1758	board_event.subcategory = LPFC_EVENT_PORTINTERR;1759	shost = lpfc_shost_from_vport(phba->pport);1760	fc_host_post_vendor_event(shost, fc_get_event_number(),1761				  sizeof(board_event),1762				  (char *) &board_event,1763				  LPFC_NL_VENDOR_ID);1764}1765 1766/**1767 * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler1768 * @phba: pointer to lpfc hba data structure.1769 *1770 * This routine is invoked to handle the following HBA hardware error1771 * conditions:1772 * 1 - HBA error attention interrupt1773 * 2 - DMA ring index out of range1774 * 3 - Mailbox command came back as unknown1775 **/1776static void1777lpfc_handle_eratt_s3(struct lpfc_hba *phba)1778{1779	struct lpfc_vport *vport = phba->pport;1780	struct lpfc_sli   *psli = &phba->sli;1781	uint32_t event_data;1782	unsigned long temperature;1783	struct temp_event temp_event_data;1784	struct Scsi_Host  *shost;1785 1786	/* If the pci channel is offline, ignore possible errors,1787	 * since we cannot communicate with the pci card anyway.1788	 */1789	if (pci_channel_offline(phba->pcidev)) {1790		clear_bit(DEFER_ERATT, &phba->hba_flag);1791		return;1792	}1793 1794	/* If resets are disabled then leave the HBA alone and return */1795	if (!phba->cfg_enable_hba_reset)1796		return;1797 1798	/* Send an internal error event to mgmt application */1799	lpfc_board_errevt_to_mgmt(phba);1800 1801	if (test_bit(DEFER_ERATT, &phba->hba_flag))1802		lpfc_handle_deferred_eratt(phba);1803 1804	if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {1805		if (phba->work_hs & HS_FFER6)1806			/* Re-establishing Link */1807			lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,1808					"1301 Re-establishing Link "1809					"Data: x%x x%x x%x\n",1810					phba->work_hs, phba->work_status[0],1811					phba->work_status[1]);1812		if (phba->work_hs & HS_FFER8)1813			/* Device Zeroization */1814			lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,1815					"2861 Host Authentication device "1816					"zeroization Data:x%x x%x x%x\n",1817					phba->work_hs, phba->work_status[0],1818					phba->work_status[1]);1819 1820		spin_lock_irq(&phba->hbalock);1821		psli->sli_flag &= ~LPFC_SLI_ACTIVE;1822		spin_unlock_irq(&phba->hbalock);1823 1824		/*1825		* Firmware stops when it triggled erratt with HS_FFER6.1826		* That could cause the I/Os dropped by the firmware.1827		* Error iocb (I/O) on txcmplq and let the SCSI layer1828		* retry it after re-establishing link.1829		*/1830		lpfc_sli_abort_fcp_rings(phba);1831 1832		/*1833		 * There was a firmware error.  Take the hba offline and then1834		 * attempt to restart it.1835		 */1836		lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);1837		lpfc_offline(phba);1838		lpfc_sli_brdrestart(phba);1839		if (lpfc_online(phba) == 0) {	/* Initialize the HBA */1840			lpfc_unblock_mgmt_io(phba);1841			return;1842		}1843		lpfc_unblock_mgmt_io(phba);1844	} else if (phba->work_hs & HS_CRIT_TEMP) {1845		temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);1846		temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;1847		temp_event_data.event_code = LPFC_CRIT_TEMP;1848		temp_event_data.data = (uint32_t)temperature;1849 1850		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,1851				"0406 Adapter maximum temperature exceeded "1852				"(%ld), taking this port offline "1853				"Data: x%x x%x x%x\n",1854				temperature, phba->work_hs,1855				phba->work_status[0], phba->work_status[1]);1856 1857		shost = lpfc_shost_from_vport(phba->pport);1858		fc_host_post_vendor_event(shost, fc_get_event_number(),1859					  sizeof(temp_event_data),1860					  (char *) &temp_event_data,1861					  SCSI_NL_VID_TYPE_PCI1862					  | PCI_VENDOR_ID_EMULEX);1863 1864		spin_lock_irq(&phba->hbalock);1865		phba->over_temp_state = HBA_OVER_TEMP;1866		spin_unlock_irq(&phba->hbalock);1867		lpfc_offline_eratt(phba);1868 1869	} else {1870		/* The if clause above forces this code path when the status1871		 * failure is a value other than FFER6. Do not call the offline1872		 * twice. This is the adapter hardware error path.1873		 */1874		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,1875				"0457 Adapter Hardware Error "1876				"Data: x%x x%x x%x\n",1877				phba->work_hs,1878				phba->work_status[0], phba->work_status[1]);1879 1880		event_data = FC_REG_DUMP_EVENT;1881		shost = lpfc_shost_from_vport(vport);1882		fc_host_post_vendor_event(shost, fc_get_event_number(),1883				sizeof(event_data), (char *) &event_data,1884				SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);1885 1886		lpfc_offline_eratt(phba);1887	}1888	return;1889}1890 1891/**1892 * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg1893 * @phba: pointer to lpfc hba data structure.1894 * @mbx_action: flag for mailbox shutdown action.1895 * @en_rn_msg: send reset/port recovery message.1896 * This routine is invoked to perform an SLI4 port PCI function reset in1897 * response to port status register polling attention. It waits for port1898 * status register (ERR, RDY, RN) bits before proceeding with function reset.1899 * During this process, interrupt vectors are freed and later requested1900 * for handling possible port resource change.1901 **/1902static int1903lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,1904			    bool en_rn_msg)1905{1906	int rc;1907	uint32_t intr_mode;1908	LPFC_MBOXQ_t *mboxq;1909 1910	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=1911	    LPFC_SLI_INTF_IF_TYPE_2) {1912		/*1913		 * On error status condition, driver need to wait for port1914		 * ready before performing reset.1915		 */1916		rc = lpfc_sli4_pdev_status_reg_wait(phba);1917		if (rc)1918			return rc;1919	}1920 1921	/* need reset: attempt for port recovery */1922	if (en_rn_msg)1923		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,1924				"2887 Reset Needed: Attempting Port "1925				"Recovery...\n");1926 1927	/* If we are no wait, the HBA has been reset and is not1928	 * functional, thus we should clear1929	 * (LPFC_SLI_ACTIVE | LPFC_SLI_MBOX_ACTIVE) flags.1930	 */1931	if (mbx_action == LPFC_MBX_NO_WAIT) {1932		spin_lock_irq(&phba->hbalock);1933		phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;1934		if (phba->sli.mbox_active) {1935			mboxq = phba->sli.mbox_active;1936			mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;1937			__lpfc_mbox_cmpl_put(phba, mboxq);1938			phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;1939			phba->sli.mbox_active = NULL;1940		}1941		spin_unlock_irq(&phba->hbalock);1942	}1943 1944	lpfc_offline_prep(phba, mbx_action);1945	lpfc_sli_flush_io_rings(phba);1946	lpfc_offline(phba);1947	/* release interrupt for possible resource change */1948	lpfc_sli4_disable_intr(phba);1949	rc = lpfc_sli_brdrestart(phba);1950	if (rc) {1951		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,1952				"6309 Failed to restart board\n");1953		return rc;1954	}1955	/* request and enable interrupt */1956	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);1957	if (intr_mode == LPFC_INTR_ERROR) {1958		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,1959				"3175 Failed to enable interrupt\n");1960		return -EIO;1961	}1962	phba->intr_mode = intr_mode;1963	rc = lpfc_online(phba);1964	if (rc == 0)1965		lpfc_unblock_mgmt_io(phba);1966 1967	return rc;1968}1969 1970/**1971 * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler1972 * @phba: pointer to lpfc hba data structure.1973 *1974 * This routine is invoked to handle the SLI4 HBA hardware error attention1975 * conditions.1976 **/1977static void1978lpfc_handle_eratt_s4(struct lpfc_hba *phba)1979{1980	struct lpfc_vport *vport = phba->pport;1981	uint32_t event_data;1982	struct Scsi_Host *shost;1983	uint32_t if_type;1984	struct lpfc_register portstat_reg = {0};1985	uint32_t reg_err1, reg_err2;1986	uint32_t uerrlo_reg, uemasklo_reg;1987	uint32_t smphr_port_status = 0, pci_rd_rc1, pci_rd_rc2;1988	bool en_rn_msg = true;1989	struct temp_event temp_event_data;1990	struct lpfc_register portsmphr_reg;1991	int rc, i;1992 1993	/* If the pci channel is offline, ignore possible errors, since1994	 * we cannot communicate with the pci card anyway.1995	 */1996	if (pci_channel_offline(phba->pcidev)) {1997		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,1998				"3166 pci channel is offline\n");1999		lpfc_sli_flush_io_rings(phba);2000		return;2001	}2002 2003	memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));2004	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);2005	switch (if_type) {2006	case LPFC_SLI_INTF_IF_TYPE_0:2007		pci_rd_rc1 = lpfc_readl(2008				phba->sli4_hba.u.if_type0.UERRLOregaddr,2009				&uerrlo_reg);2010		pci_rd_rc2 = lpfc_readl(2011				phba->sli4_hba.u.if_type0.UEMASKLOregaddr,2012				&uemasklo_reg);2013		/* consider PCI bus read error as pci_channel_offline */2014		if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)2015			return;2016		if (!test_bit(HBA_RECOVERABLE_UE, &phba->hba_flag)) {2017			lpfc_sli4_offline_eratt(phba);2018			return;2019		}2020		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,2021				"7623 Checking UE recoverable");2022 2023		for (i = 0; i < phba->sli4_hba.ue_to_sr / 1000; i++) {2024			if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,2025				       &portsmphr_reg.word0))2026				continue;2027 2028			smphr_port_status = bf_get(lpfc_port_smphr_port_status,2029						   &portsmphr_reg);2030			if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==2031			    LPFC_PORT_SEM_UE_RECOVERABLE)2032				break;2033			/*Sleep for 1Sec, before checking SEMAPHORE */2034			msleep(1000);2035		}2036 2037		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,2038				"4827 smphr_port_status x%x : Waited %dSec",2039				smphr_port_status, i);2040 2041		/* Recoverable UE, reset the HBA device */2042		if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==2043		    LPFC_PORT_SEM_UE_RECOVERABLE) {2044			for (i = 0; i < 20; i++) {2045				msleep(1000);2046				if (!lpfc_readl(phba->sli4_hba.PSMPHRregaddr,2047				    &portsmphr_reg.word0) &&2048				    (LPFC_POST_STAGE_PORT_READY ==2049				     bf_get(lpfc_port_smphr_port_status,2050				     &portsmphr_reg))) {2051					rc = lpfc_sli4_port_sta_fn_reset(phba,2052						LPFC_MBX_NO_WAIT, en_rn_msg);2053					if (rc == 0)2054						return;2055					lpfc_printf_log(phba, KERN_ERR,2056						LOG_TRACE_EVENT,2057						"4215 Failed to recover UE");2058					break;2059				}2060			}2061		}2062		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,2063				"7624 Firmware not ready: Failing UE recovery,"2064				" waited %dSec", i);2065		phba->link_state = LPFC_HBA_ERROR;2066		break;2067 2068	case LPFC_SLI_INTF_IF_TYPE_2:2069	case LPFC_SLI_INTF_IF_TYPE_6:2070		pci_rd_rc1 = lpfc_readl(2071				phba->sli4_hba.u.if_type2.STATUSregaddr,2072				&portstat_reg.word0);2073		/* consider PCI bus read error as pci_channel_offline */2074		if (pci_rd_rc1 == -EIO) {2075			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,2076				"3151 PCI bus read access failure: x%x\n",2077				readl(phba->sli4_hba.u.if_type2.STATUSregaddr));2078			lpfc_sli4_offline_eratt(phba);2079			return;2080		}2081		reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);2082		reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);2083		if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {2084			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,2085					"2889 Port Overtemperature event, "2086					"taking port offline Data: x%x x%x\n",2087					reg_err1, reg_err2);2088 2089			phba->sfp_alarm |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;2090			temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;2091			temp_event_data.event_code = LPFC_CRIT_TEMP;2092			temp_event_data.data = 0xFFFFFFFF;2093 2094			shost = lpfc_shost_from_vport(phba->pport);2095			fc_host_post_vendor_event(shost, fc_get_event_number(),2096						  sizeof(temp_event_data),2097						  (char *)&temp_event_data,2098						  SCSI_NL_VID_TYPE_PCI2099						  | PCI_VENDOR_ID_EMULEX);2100 2101			spin_lock_irq(&phba->hbalock);2102			phba->over_temp_state = HBA_OVER_TEMP;2103			spin_unlock_irq(&phba->hbalock);2104			lpfc_sli4_offline_eratt(phba);2105			return;2106		}2107		if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&2108		    reg_err2 == SLIPORT_ERR2_REG_FW_RESTART) {2109			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,2110					"3143 Port Down: Firmware Update "2111					"Detected\n");2112			en_rn_msg = false;2113		} else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&2114			 reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)2115			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,2116					"3144 Port Down: Debug Dump\n");2117		else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&2118			 reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)2119			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,2120					"3145 Port Down: Provisioning\n");2121 2122		/* If resets are disabled then leave the HBA alone and return */2123		if (!phba->cfg_enable_hba_reset)2124			return;2125 2126		/* Check port status register for function reset */2127		rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT,2128				en_rn_msg);2129		if (rc == 0) {2130			/* don't report event on forced debug dump */2131			if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&2132			    reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)2133				return;2134			else2135				break;2136		}2137		/* fall through for not able to recover */2138		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,2139				"3152 Unrecoverable error\n");2140		lpfc_sli4_offline_eratt(phba);2141		break;2142	case LPFC_SLI_INTF_IF_TYPE_1:2143	default:2144		break;2145	}2146	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,2147			"3123 Report dump event to upper layer\n");2148	/* Send an internal error event to mgmt application */2149	lpfc_board_errevt_to_mgmt(phba);2150 2151	event_data = FC_REG_DUMP_EVENT;2152	shost = lpfc_shost_from_vport(vport);2153	fc_host_post_vendor_event(shost, fc_get_event_number(),2154				  sizeof(event_data), (char *) &event_data,2155				  SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);2156}2157 2158/**2159 * lpfc_handle_eratt - Wrapper func for handling hba error attention2160 * @phba: pointer to lpfc HBA data structure.2161 *2162 * This routine wraps the actual SLI3 or SLI4 hba error attention handling2163 * routine from the API jump table function pointer from the lpfc_hba struct.2164 *2165 * Return codes2166 *   0 - success.2167 *   Any other value - error.2168 **/2169void2170lpfc_handle_eratt(struct lpfc_hba *phba)2171{2172	(*phba->lpfc_handle_eratt)(phba);2173}2174 2175/**2176 * lpfc_handle_latt - The HBA link event handler2177 * @phba: pointer to lpfc hba data structure.2178 *2179 * This routine is invoked from the worker thread to handle a HBA host2180 * attention link event. SLI3 only.2181 **/2182void2183lpfc_handle_latt(struct lpfc_hba *phba)2184{2185	struct lpfc_vport *vport = phba->pport;2186	struct lpfc_sli   *psli = &phba->sli;2187	LPFC_MBOXQ_t *pmb;2188	volatile uint32_t control;2189	int rc = 0;2190 2191	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);2192	if (!pmb) {2193		rc = 1;2194		goto lpfc_handle_latt_err_exit;2195	}2196 2197	rc = lpfc_mbox_rsrc_prep(phba, pmb);2198	if (rc) {2199		rc = 2;2200		mempool_free(pmb, phba->mbox_mem_pool);2201		goto lpfc_handle_latt_err_exit;2202	}2203 2204	/* Cleanup any outstanding ELS commands */2205	lpfc_els_flush_all_cmd(phba);2206	psli->slistat.link_event++;2207	lpfc_read_topology(phba, pmb, pmb->ctx_buf);2208	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;2209	pmb->vport = vport;2210	/* Block ELS IOCBs until we have processed this mbox command */2211	phba->sli.sli3_ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;2212	rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);2213	if (rc == MBX_NOT_FINISHED) {2214		rc = 4;2215		goto lpfc_handle_latt_free_mbuf;2216	}2217 2218	/* Clear Link Attention in HA REG */2219	spin_lock_irq(&phba->hbalock);2220	writel(HA_LATT, phba->HAregaddr);2221	readl(phba->HAregaddr); /* flush */2222	spin_unlock_irq(&phba->hbalock);2223 2224	return;2225 2226lpfc_handle_latt_free_mbuf:2227	phba->sli.sli3_ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;2228	lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);2229lpfc_handle_latt_err_exit:2230	/* Enable Link attention interrupts */2231	spin_lock_irq(&phba->hbalock);2232	psli->sli_flag |= LPFC_PROCESS_LA;2233	control = readl(phba->HCregaddr);2234	control |= HC_LAINT_ENA;2235	writel(control, phba->HCregaddr);2236	readl(phba->HCregaddr); /* flush */2237 2238	/* Clear Link Attention in HA REG */2239	writel(HA_LATT, phba->HAregaddr);2240	readl(phba->HAregaddr); /* flush */2241	spin_unlock_irq(&phba->hbalock);2242	lpfc_linkdown(phba);2243	phba->link_state = LPFC_HBA_ERROR;2244 2245	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,2246			"0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);2247 2248	return;2249}2250 2251static void2252lpfc_fill_vpd(struct lpfc_hba *phba, uint8_t *vpd, int length, int *pindex)2253{2254	int i, j;2255 2256	while (length > 0) {2257		/* Look for Serial Number */2258		if ((vpd[*pindex] == 'S') && (vpd[*pindex + 1] == 'N')) {2259			*pindex += 2;2260			i = vpd[*pindex];2261			*pindex += 1;2262			j = 0;2263			length -= (3+i);2264			while (i--) {2265				phba->SerialNumber[j++] = vpd[(*pindex)++];2266				if (j == 31)2267					break;2268			}2269			phba->SerialNumber[j] = 0;2270			continue;2271		} else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '1')) {2272			phba->vpd_flag |= VPD_MODEL_DESC;2273			*pindex += 2;2274			i = vpd[*pindex];2275			*pindex += 1;2276			j = 0;2277			length -= (3+i);2278			while (i--) {2279				phba->ModelDesc[j++] = vpd[(*pindex)++];2280				if (j == 255)2281					break;2282			}2283			phba->ModelDesc[j] = 0;2284			continue;2285		} else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '2')) {2286			phba->vpd_flag |= VPD_MODEL_NAME;2287			*pindex += 2;2288			i = vpd[*pindex];2289			*pindex += 1;2290			j = 0;2291			length -= (3+i);2292			while (i--) {2293				phba->ModelName[j++] = vpd[(*pindex)++];2294				if (j == 79)2295					break;2296			}2297			phba->ModelName[j] = 0;2298			continue;2299		} else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '3')) {2300			phba->vpd_flag |= VPD_PROGRAM_TYPE;2301			*pindex += 2;2302			i = vpd[*pindex];2303			*pindex += 1;2304			j = 0;2305			length -= (3+i);2306			while (i--) {2307				phba->ProgramType[j++] = vpd[(*pindex)++];2308				if (j == 255)2309					break;2310			}2311			phba->ProgramType[j] = 0;2312			continue;2313		} else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '4')) {2314			phba->vpd_flag |= VPD_PORT;2315			*pindex += 2;2316			i = vpd[*pindex];2317			*pindex += 1;2318			j = 0;2319			length -= (3 + i);2320			while (i--) {2321				if ((phba->sli_rev == LPFC_SLI_REV4) &&2322				    (phba->sli4_hba.pport_name_sta ==2323				     LPFC_SLI4_PPNAME_GET)) {2324					j++;2325					(*pindex)++;2326				} else2327					phba->Port[j++] = vpd[(*pindex)++];2328				if (j == 19)2329					break;2330			}2331			if ((phba->sli_rev != LPFC_SLI_REV4) ||2332			    (phba->sli4_hba.pport_name_sta ==2333			     LPFC_SLI4_PPNAME_NON))2334				phba->Port[j] = 0;2335			continue;2336		} else {2337			*pindex += 2;2338			i = vpd[*pindex];2339			*pindex += 1;2340			*pindex += i;2341			length -= (3 + i);2342		}2343	}2344}2345 2346/**2347 * lpfc_parse_vpd - Parse VPD (Vital Product Data)2348 * @phba: pointer to lpfc hba data structure.2349 * @vpd: pointer to the vital product data.2350 * @len: length of the vital product data in bytes.2351 *2352 * This routine parses the Vital Product Data (VPD). The VPD is treated as2353 * an array of characters. In this routine, the ModelName, ProgramType, and2354 * ModelDesc, etc. fields of the phba data structure will be populated.2355 *2356 * Return codes2357 *   0 - pointer to the VPD passed in is NULL2358 *   1 - success2359 **/2360int2361lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)2362{2363	uint8_t lenlo, lenhi;2364	int Length;2365	int i;2366	int finished = 0;2367	int index = 0;2368 2369	if (!vpd)2370		return 0;2371 2372	/* Vital Product */2373	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,2374			"0455 Vital Product Data: x%x x%x x%x x%x\n",2375			(uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],2376			(uint32_t) vpd[3]);2377	while (!finished && (index < (len - 4))) {2378		switch (vpd[index]) {2379		case 0x82:2380		case 0x91:2381			index += 1;2382			lenlo = vpd[index];2383			index += 1;2384			lenhi = vpd[index];2385			index += 1;2386			i = ((((unsigned short)lenhi) << 8) + lenlo);2387			index += i;2388			break;2389		case 0x90:2390			index += 1;2391			lenlo = vpd[index];2392			index += 1;2393			lenhi = vpd[index];2394			index += 1;2395			Length = ((((unsigned short)lenhi) << 8) + lenlo);2396			if (Length > len - index)2397				Length = len - index;2398 2399			lpfc_fill_vpd(phba, vpd, Length, &index);2400			finished = 0;2401			break;2402		case 0x78:2403			finished = 1;2404			break;2405		default:2406			index ++;2407			break;2408		}2409	}2410 2411	return(1);2412}2413 2414/**2415 * lpfc_get_atto_model_desc - Retrieve ATTO HBA device model name and description2416 * @phba: pointer to lpfc hba data structure.2417 * @mdp: pointer to the data structure to hold the derived model name.2418 * @descp: pointer to the data structure to hold the derived description.2419 *2420 * This routine retrieves HBA's description based on its registered PCI device2421 * ID. The @descp passed into this function points to an array of 256 chars. It2422 * shall be returned with the model name, maximum speed, and the host bus type.2423 * The @mdp passed into this function points to an array of 80 chars. When the2424 * function returns, the @mdp will be filled with the model name.2425 **/2426static void2427lpfc_get_atto_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)2428{2429	uint16_t sub_dev_id = phba->pcidev->subsystem_device;2430	char *model = "<Unknown>";2431	int tbolt = 0;2432 2433	switch (sub_dev_id) {2434	case PCI_DEVICE_ID_CLRY_161E:2435		model = "161E";2436		break;2437	case PCI_DEVICE_ID_CLRY_162E:2438		model = "162E";2439		break;2440	case PCI_DEVICE_ID_CLRY_164E:2441		model = "164E";2442		break;2443	case PCI_DEVICE_ID_CLRY_161P:2444		model = "161P";2445		break;2446	case PCI_DEVICE_ID_CLRY_162P:2447		model = "162P";2448		break;2449	case PCI_DEVICE_ID_CLRY_164P:2450		model = "164P";2451		break;2452	case PCI_DEVICE_ID_CLRY_321E:2453		model = "321E";2454		break;2455	case PCI_DEVICE_ID_CLRY_322E:2456		model = "322E";2457		break;2458	case PCI_DEVICE_ID_CLRY_324E:2459		model = "324E";2460		break;2461	case PCI_DEVICE_ID_CLRY_321P:2462		model = "321P";2463		break;2464	case PCI_DEVICE_ID_CLRY_322P:2465		model = "322P";2466		break;2467	case PCI_DEVICE_ID_CLRY_324P:2468		model = "324P";2469		break;2470	case PCI_DEVICE_ID_TLFC_2XX2:2471		model = "2XX2";2472		tbolt = 1;2473		break;2474	case PCI_DEVICE_ID_TLFC_3162:2475		model = "3162";2476		tbolt = 1;2477		break;2478	case PCI_DEVICE_ID_TLFC_3322:2479		model = "3322";2480		tbolt = 1;2481		break;2482	default:2483		model = "Unknown";2484		break;2485	}2486 2487	if (mdp && mdp[0] == '\0')2488		snprintf(mdp, 79, "%s", model);2489 2490	if (descp && descp[0] == '\0')2491		snprintf(descp, 255,2492			 "ATTO %s%s, Fibre Channel Adapter Initiator, Port %s",2493			 (tbolt) ? "ThunderLink FC " : "Celerity FC-",2494			 model,2495			 phba->Port);2496}2497 2498/**2499 * lpfc_get_hba_model_desc - Retrieve HBA device model name and description2500 * @phba: pointer to lpfc hba data structure.2501 * @mdp: pointer to the data structure to hold the derived model name.2502 * @descp: pointer to the data structure to hold the derived description.2503 *2504 * This routine retrieves HBA's description based on its registered PCI device2505 * ID. The @descp passed into this function points to an array of 256 chars. It2506 * shall be returned with the model name, maximum speed, and the host bus type.2507 * The @mdp passed into this function points to an array of 80 chars. When the2508 * function returns, the @mdp will be filled with the model name.2509 **/2510static void2511lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)2512{2513	lpfc_vpd_t *vp;2514	uint16_t dev_id = phba->pcidev->device;2515	int max_speed;2516	int GE = 0;2517	int oneConnect = 0; /* default is not a oneConnect */2518	struct {2519		char *name;2520		char *bus;2521		char *function;2522	} m = {"<Unknown>", "", ""};2523 2524	if (mdp && mdp[0] != '\0'2525		&& descp && descp[0] != '\0')2526		return;2527 2528	if (phba->pcidev->vendor == PCI_VENDOR_ID_ATTO) {2529		lpfc_get_atto_model_desc(phba, mdp, descp);2530		return;2531	}2532 2533	if (phba->lmt & LMT_64Gb)2534		max_speed = 64;2535	else if (phba->lmt & LMT_32Gb)2536		max_speed = 32;2537	else if (phba->lmt & LMT_16Gb)2538		max_speed = 16;2539	else if (phba->lmt & LMT_10Gb)2540		max_speed = 10;2541	else if (phba->lmt & LMT_8Gb)2542		max_speed = 8;2543	else if (phba->lmt & LMT_4Gb)2544		max_speed = 4;2545	else if (phba->lmt & LMT_2Gb)2546		max_speed = 2;2547	else if (phba->lmt & LMT_1Gb)2548		max_speed = 1;2549	else2550		max_speed = 0;2551 2552	vp = &phba->vpd;2553 2554	switch (dev_id) {2555	case PCI_DEVICE_ID_FIREFLY:2556		m = (typeof(m)){"LP6000", "PCI",2557				"Obsolete, Unsupported Fibre Channel Adapter"};2558		break;2559	case PCI_DEVICE_ID_SUPERFLY:2560		if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)2561			m = (typeof(m)){"LP7000", "PCI", ""};2562		else2563			m = (typeof(m)){"LP7000E", "PCI", ""};2564		m.function = "Obsolete, Unsupported Fibre Channel Adapter";2565		break;2566	case PCI_DEVICE_ID_DRAGONFLY:2567		m = (typeof(m)){"LP8000", "PCI",2568				"Obsolete, Unsupported Fibre Channel Adapter"};2569		break;2570	case PCI_DEVICE_ID_CENTAUR:2571		if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)2572			m = (typeof(m)){"LP9002", "PCI", ""};2573		else2574			m = (typeof(m)){"LP9000", "PCI", ""};2575		m.function = "Obsolete, Unsupported Fibre Channel Adapter";2576		break;2577	case PCI_DEVICE_ID_RFLY:2578		m = (typeof(m)){"LP952", "PCI",2579				"Obsolete, Unsupported Fibre Channel Adapter"};2580		break;2581	case PCI_DEVICE_ID_PEGASUS:2582		m = (typeof(m)){"LP9802", "PCI-X",2583				"Obsolete, Unsupported Fibre Channel Adapter"};2584		break;2585	case PCI_DEVICE_ID_THOR:2586		m = (typeof(m)){"LP10000", "PCI-X",2587				"Obsolete, Unsupported Fibre Channel Adapter"};2588		break;2589	case PCI_DEVICE_ID_VIPER:2590		m = (typeof(m)){"LPX1000",  "PCI-X",2591				"Obsolete, Unsupported Fibre Channel Adapter"};2592		break;2593	case PCI_DEVICE_ID_PFLY:2594		m = (typeof(m)){"LP982", "PCI-X",2595				"Obsolete, Unsupported Fibre Channel Adapter"};2596		break;2597	case PCI_DEVICE_ID_TFLY:2598		m = (typeof(m)){"LP1050", "PCI-X",2599				"Obsolete, Unsupported Fibre Channel Adapter"};2600		break;2601	case PCI_DEVICE_ID_HELIOS:2602		m = (typeof(m)){"LP11000", "PCI-X2",2603				"Obsolete, Unsupported Fibre Channel Adapter"};2604		break;2605	case PCI_DEVICE_ID_HELIOS_SCSP:2606		m = (typeof(m)){"LP11000-SP", "PCI-X2",2607				"Obsolete, Unsupported Fibre Channel Adapter"};2608		break;2609	case PCI_DEVICE_ID_HELIOS_DCSP:2610		m = (typeof(m)){"LP11002-SP",  "PCI-X2",2611				"Obsolete, Unsupported Fibre Channel Adapter"};2612		break;2613	case PCI_DEVICE_ID_NEPTUNE:2614		m = (typeof(m)){"LPe1000", "PCIe",2615				"Obsolete, Unsupported Fibre Channel Adapter"};2616		break;2617	case PCI_DEVICE_ID_NEPTUNE_SCSP:2618		m = (typeof(m)){"LPe1000-SP", "PCIe",2619				"Obsolete, Unsupported Fibre Channel Adapter"};2620		break;2621	case PCI_DEVICE_ID_NEPTUNE_DCSP:2622		m = (typeof(m)){"LPe1002-SP", "PCIe",2623				"Obsolete, Unsupported Fibre Channel Adapter"};2624		break;2625	case PCI_DEVICE_ID_BMID:2626		m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};2627		break;2628	case PCI_DEVICE_ID_BSMB:2629		m = (typeof(m)){"LP111", "PCI-X2",2630				"Obsolete, Unsupported Fibre Channel Adapter"};2631		break;2632	case PCI_DEVICE_ID_ZEPHYR:2633		m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};2634		break;2635	case PCI_DEVICE_ID_ZEPHYR_SCSP:2636		m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};2637		break;2638	case PCI_DEVICE_ID_ZEPHYR_DCSP:2639		m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};2640		GE = 1;2641		break;2642	case PCI_DEVICE_ID_ZMID:2643		m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};2644		break;2645	case PCI_DEVICE_ID_ZSMB:2646		m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};2647		break;2648	case PCI_DEVICE_ID_LP101:2649		m = (typeof(m)){"LP101", "PCI-X",2650				"Obsolete, Unsupported Fibre Channel Adapter"};2651		break;2652	case PCI_DEVICE_ID_LP10000S:2653		m = (typeof(m)){"LP10000-S", "PCI",2654				"Obsolete, Unsupported Fibre Channel Adapter"};2655		break;2656	case PCI_DEVICE_ID_LP11000S:2657		m = (typeof(m)){"LP11000-S", "PCI-X2",2658				"Obsolete, Unsupported Fibre Channel Adapter"};2659		break;2660	case PCI_DEVICE_ID_LPE11000S:2661		m = (typeof(m)){"LPe11000-S", "PCIe",2662				"Obsolete, Unsupported Fibre Channel Adapter"};2663		break;2664	case PCI_DEVICE_ID_SAT:2665		m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};2666		break;2667	case PCI_DEVICE_ID_SAT_MID:2668		m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};2669		break;2670	case PCI_DEVICE_ID_SAT_SMB:2671		m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};2672		break;2673	case PCI_DEVICE_ID_SAT_DCSP:2674		m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};2675		break;2676	case PCI_DEVICE_ID_SAT_SCSP:2677		m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};2678		break;2679	case PCI_DEVICE_ID_SAT_S:2680		m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};2681		break;2682	case PCI_DEVICE_ID_PROTEUS_VF:2683		m = (typeof(m)){"LPev12000", "PCIe IOV",2684				"Obsolete, Unsupported Fibre Channel Adapter"};2685		break;2686	case PCI_DEVICE_ID_PROTEUS_PF:2687		m = (typeof(m)){"LPev12000", "PCIe IOV",2688				"Obsolete, Unsupported Fibre Channel Adapter"};2689		break;2690	case PCI_DEVICE_ID_PROTEUS_S:2691		m = (typeof(m)){"LPemv12002-S", "PCIe IOV",2692				"Obsolete, Unsupported Fibre Channel Adapter"};2693		break;2694	case PCI_DEVICE_ID_TIGERSHARK:2695		oneConnect = 1;2696		m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};2697		break;2698	case PCI_DEVICE_ID_TOMCAT:2699		oneConnect = 1;2700		m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};2701		break;2702	case PCI_DEVICE_ID_FALCON:2703		m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",2704				"EmulexSecure Fibre"};2705		break;2706	case PCI_DEVICE_ID_BALIUS:2707		m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",2708				"Obsolete, Unsupported Fibre Channel Adapter"};2709		break;2710	case PCI_DEVICE_ID_LANCER_FC:2711		m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};2712		break;2713	case PCI_DEVICE_ID_LANCER_FC_VF:2714		m = (typeof(m)){"LPe16000", "PCIe",2715				"Obsolete, Unsupported Fibre Channel Adapter"};2716		break;2717	case PCI_DEVICE_ID_LANCER_FCOE:2718		oneConnect = 1;2719		m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};2720		break;2721	case PCI_DEVICE_ID_LANCER_FCOE_VF:2722		oneConnect = 1;2723		m = (typeof(m)){"OCe15100", "PCIe",2724				"Obsolete, Unsupported FCoE"};2725		break;2726	case PCI_DEVICE_ID_LANCER_G6_FC:2727		m = (typeof(m)){"LPe32000", "PCIe", "Fibre Channel Adapter"};2728		break;2729	case PCI_DEVICE_ID_LANCER_G7_FC:2730		m = (typeof(m)){"LPe36000", "PCIe", "Fibre Channel Adapter"};2731		break;2732	case PCI_DEVICE_ID_LANCER_G7P_FC:2733		m = (typeof(m)){"LPe38000", "PCIe", "Fibre Channel Adapter"};2734		break;2735	case PCI_DEVICE_ID_SKYHAWK:2736	case PCI_DEVICE_ID_SKYHAWK_VF:2737		oneConnect = 1;2738		m = (typeof(m)){"OCe14000", "PCIe", "FCoE"};2739		break;2740	default:2741		m = (typeof(m)){"Unknown", "", ""};2742		break;2743	}2744 2745	if (mdp && mdp[0] == '\0')2746		snprintf(mdp, 79,"%s", m.name);2747	/*2748	 * oneConnect hba requires special processing, they are all initiators2749	 * and we put the port number on the end2750	 */2751	if (descp && descp[0] == '\0') {2752		if (oneConnect)2753			snprintf(descp, 255,2754				"Emulex OneConnect %s, %s Initiator %s",2755				m.name, m.function,2756				phba->Port);2757		else if (max_speed == 0)2758			snprintf(descp, 255,2759				"Emulex %s %s %s",2760				m.name, m.bus, m.function);2761		else2762			snprintf(descp, 255,2763				"Emulex %s %d%s %s %s",2764				m.name, max_speed, (GE) ? "GE" : "Gb",2765				m.bus, m.function);2766	}2767}2768 2769/**2770 * lpfc_sli3_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring2771 * @phba: pointer to lpfc hba data structure.2772 * @pring: pointer to a IOCB ring.2773 * @cnt: the number of IOCBs to be posted to the IOCB ring.2774 *2775 * This routine posts a given number of IOCBs with the associated DMA buffer2776 * descriptors specified by the cnt argument to the given IOCB ring.2777 *2778 * Return codes2779 *   The number of IOCBs NOT able to be posted to the IOCB ring.2780 **/2781int2782lpfc_sli3_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)2783{2784	IOCB_t *icmd;2785	struct lpfc_iocbq *iocb;2786	struct lpfc_dmabuf *mp1, *mp2;2787 2788	cnt += pring->missbufcnt;2789 2790	/* While there are buffers to post */2791	while (cnt > 0) {2792		/* Allocate buffer for  command iocb */2793		iocb = lpfc_sli_get_iocbq(phba);2794		if (iocb == NULL) {2795			pring->missbufcnt = cnt;2796			return cnt;2797		}2798		icmd = &iocb->iocb;2799 2800		/* 2 buffers can be posted per command */2801		/* Allocate buffer to post */2802		mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);2803		if (mp1)2804		    mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);2805		if (!mp1 || !mp1->virt) {2806			kfree(mp1);2807			lpfc_sli_release_iocbq(phba, iocb);2808			pring->missbufcnt = cnt;2809			return cnt;2810		}2811 2812		INIT_LIST_HEAD(&mp1->list);2813		/* Allocate buffer to post */2814		if (cnt > 1) {2815			mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);2816			if (mp2)2817				mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,2818							    &mp2->phys);2819			if (!mp2 || !mp2->virt) {2820				kfree(mp2);2821				lpfc_mbuf_free(phba, mp1->virt, mp1->phys);2822				kfree(mp1);2823				lpfc_sli_release_iocbq(phba, iocb);2824				pring->missbufcnt = cnt;2825				return cnt;2826			}2827 2828			INIT_LIST_HEAD(&mp2->list);2829		} else {2830			mp2 = NULL;2831		}2832 2833		icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);2834		icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);2835		icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;2836		icmd->ulpBdeCount = 1;2837		cnt--;2838		if (mp2) {2839			icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);2840			icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);2841			icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;2842			cnt--;2843			icmd->ulpBdeCount = 2;2844		}2845 2846		icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;2847		icmd->ulpLe = 1;2848 2849		if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==2850		    IOCB_ERROR) {2851			lpfc_mbuf_free(phba, mp1->virt, mp1->phys);2852			kfree(mp1);2853			cnt++;2854			if (mp2) {2855				lpfc_mbuf_free(phba, mp2->virt, mp2->phys);2856				kfree(mp2);2857				cnt++;2858			}2859			lpfc_sli_release_iocbq(phba, iocb);2860			pring->missbufcnt = cnt;2861			return cnt;2862		}2863		lpfc_sli_ringpostbuf_put(phba, pring, mp1);2864		if (mp2)2865			lpfc_sli_ringpostbuf_put(phba, pring, mp2);2866	}2867	pring->missbufcnt = 0;2868	return 0;2869}2870 2871/**2872 * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring2873 * @phba: pointer to lpfc hba data structure.2874 *2875 * This routine posts initial receive IOCB buffers to the ELS ring. The2876 * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is2877 * set to 64 IOCBs. SLI3 only.2878 *2879 * Return codes2880 *   0 - success (currently always success)2881 **/2882static int2883lpfc_post_rcv_buf(struct lpfc_hba *phba)2884{2885	struct lpfc_sli *psli = &phba->sli;2886 2887	/* Ring 0, ELS / CT buffers */2888	lpfc_sli3_post_buffer(phba, &psli->sli3_ring[LPFC_ELS_RING], LPFC_BUF_RING0);2889	/* Ring 2 - FCP no buffers needed */2890 2891	return 0;2892}2893 2894#define S(N,V) (((V)<<(N))|((V)>>(32-(N))))2895 2896/**2897 * lpfc_sha_init - Set up initial array of hash table entries2898 * @HashResultPointer: pointer to an array as hash table.2899 *2900 * This routine sets up the initial values to the array of hash table entries2901 * for the LC HBAs.2902 **/2903static void2904lpfc_sha_init(uint32_t * HashResultPointer)2905{2906	HashResultPointer[0] = 0x67452301;2907	HashResultPointer[1] = 0xEFCDAB89;2908	HashResultPointer[2] = 0x98BADCFE;2909	HashResultPointer[3] = 0x10325476;2910	HashResultPointer[4] = 0xC3D2E1F0;2911}2912 2913/**2914 * lpfc_sha_iterate - Iterate initial hash table with the working hash table2915 * @HashResultPointer: pointer to an initial/result hash table.2916 * @HashWorkingPointer: pointer to an working hash table.2917 *2918 * This routine iterates an initial hash table pointed by @HashResultPointer2919 * with the values from the working hash table pointeed by @HashWorkingPointer.2920 * The results are putting back to the initial hash table, returned through2921 * the @HashResultPointer as the result hash table.2922 **/2923static void2924lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)2925{2926	int t;2927	uint32_t TEMP;2928	uint32_t A, B, C, D, E;2929	t = 16;2930	do {2931		HashWorkingPointer[t] =2932		    S(1,2933		      HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -2934								     8] ^2935		      HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);2936	} while (++t <= 79);2937	t = 0;2938	A = HashResultPointer[0];2939	B = HashResultPointer[1];2940	C = HashResultPointer[2];2941	D = HashResultPointer[3];2942	E = HashResultPointer[4];2943 2944	do {2945		if (t < 20) {2946			TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;2947		} else if (t < 40) {2948			TEMP = (B ^ C ^ D) + 0x6ED9EBA1;2949		} else if (t < 60) {2950			TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;2951		} else {2952			TEMP = (B ^ C ^ D) + 0xCA62C1D6;2953		}2954		TEMP += S(5, A) + E + HashWorkingPointer[t];2955		E = D;2956		D = C;2957		C = S(30, B);2958		B = A;2959		A = TEMP;2960	} while (++t <= 79);2961 2962	HashResultPointer[0] += A;2963	HashResultPointer[1] += B;2964	HashResultPointer[2] += C;2965	HashResultPointer[3] += D;2966	HashResultPointer[4] += E;2967 2968}2969 2970/**2971 * lpfc_challenge_key - Create challenge key based on WWPN of the HBA2972 * @RandomChallenge: pointer to the entry of host challenge random number array.2973 * @HashWorking: pointer to the entry of the working hash array.2974 *2975 * This routine calculates the working hash array referred by @HashWorking2976 * from the challenge random numbers associated with the host, referred by2977 * @RandomChallenge. The result is put into the entry of the working hash2978 * array and returned by reference through @HashWorking.2979 **/2980static void2981lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)2982{2983	*HashWorking = (*RandomChallenge ^ *HashWorking);2984}2985 2986/**2987 * lpfc_hba_init - Perform special handling for LC HBA initialization2988 * @phba: pointer to lpfc hba data structure.2989 * @hbainit: pointer to an array of unsigned 32-bit integers.2990 *2991 * This routine performs the special handling for LC HBA initialization.2992 **/2993void2994lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)2995{2996	int t;2997	uint32_t *HashWorking;2998	uint32_t *pwwnn = (uint32_t *) phba->wwnn;2999 3000	HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);3001	if (!HashWorking)3002		return;3003 3004	HashWorking[0] = HashWorking[78] = *pwwnn++;3005	HashWorking[1] = HashWorking[79] = *pwwnn;3006 3007	for (t = 0; t < 7; t++)3008		lpfc_challenge_key(phba->RandomData + t, HashWorking + t);3009 3010	lpfc_sha_init(hbainit);3011	lpfc_sha_iterate(hbainit, HashWorking);3012	kfree(HashWorking);3013}3014 3015/**3016 * lpfc_cleanup - Performs vport cleanups before deleting a vport3017 * @vport: pointer to a virtual N_Port data structure.3018 *3019 * This routine performs the necessary cleanups before deleting the @vport.3020 * It invokes the discovery state machine to perform necessary state3021 * transitions and to release the ndlps associated with the @vport. Note,3022 * the physical port is treated as @vport 0.3023 **/3024void3025lpfc_cleanup(struct lpfc_vport *vport)3026{3027	struct lpfc_hba   *phba = vport->phba;3028	struct lpfc_nodelist *ndlp, *next_ndlp;3029	int i = 0;3030 3031	if (phba->link_state > LPFC_LINK_DOWN)3032		lpfc_port_link_failure(vport);3033 3034	/* Clean up VMID resources */3035	if (lpfc_is_vmid_enabled(phba))3036		lpfc_vmid_vport_cleanup(vport);3037 3038	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {3039		if (vport->port_type != LPFC_PHYSICAL_PORT &&3040		    ndlp->nlp_DID == Fabric_DID) {3041			/* Just free up ndlp with Fabric_DID for vports */3042			lpfc_nlp_put(ndlp);3043			continue;3044		}3045 3046		if (ndlp->nlp_DID == Fabric_Cntl_DID &&3047		    ndlp->nlp_state == NLP_STE_UNUSED_NODE) {3048			lpfc_nlp_put(ndlp);3049			continue;3050		}3051 3052		/* Fabric Ports not in UNMAPPED state are cleaned up in the3053		 * DEVICE_RM event.3054		 */3055		if (ndlp->nlp_type & NLP_FABRIC &&3056		    ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)3057			lpfc_disc_state_machine(vport, ndlp, NULL,3058					NLP_EVT_DEVICE_RECOVERY);3059 3060		if (!(ndlp->fc4_xpt_flags & (NVME_XPT_REGD|SCSI_XPT_REGD)))3061			lpfc_disc_state_machine(vport, ndlp, NULL,3062					NLP_EVT_DEVICE_RM);3063	}3064 3065	/* This is a special case flush to return all3066	 * IOs before entering this loop. There are3067	 * two points in the code where a flush is3068	 * avoided if the FC_UNLOADING flag is set.3069	 * one is in the multipool destroy,3070	 * (this prevents a crash) and the other is3071	 * in the nvme abort handler, ( also prevents3072	 * a crash). Both of these exceptions are3073	 * cases where the slot is still accessible.3074	 * The flush here is only when the pci slot3075	 * is offline.3076	 */3077	if (test_bit(FC_UNLOADING, &vport->load_flag) &&3078	    pci_channel_offline(phba->pcidev))3079		lpfc_sli_flush_io_rings(vport->phba);3080 3081	/* At this point, ALL ndlp's should be gone3082	 * because of the previous NLP_EVT_DEVICE_RM.3083	 * Lets wait for this to happen, if needed.3084	 */3085	while (!list_empty(&vport->fc_nodes)) {3086		if (i++ > 3000) {3087			lpfc_printf_vlog(vport, KERN_ERR,3088					 LOG_TRACE_EVENT,3089				"0233 Nodelist not empty\n");3090			list_for_each_entry_safe(ndlp, next_ndlp,3091						&vport->fc_nodes, nlp_listp) {3092				lpfc_printf_vlog(ndlp->vport, KERN_ERR,3093						 LOG_DISCOVERY,3094						 "0282 did:x%x ndlp:x%px "3095						 "refcnt:%d xflags x%x nflag x%x\n",3096						 ndlp->nlp_DID, (void *)ndlp,3097						 kref_read(&ndlp->kref),3098						 ndlp->fc4_xpt_flags,3099						 ndlp->nlp_flag);3100			}3101			break;3102		}3103 3104		/* Wait for any activity on ndlps to settle */3105		msleep(10);3106	}3107	lpfc_cleanup_vports_rrqs(vport, NULL);3108}3109 3110/**3111 * lpfc_stop_vport_timers - Stop all the timers associated with a vport3112 * @vport: pointer to a virtual N_Port data structure.3113 *3114 * This routine stops all the timers associated with a @vport. This function3115 * is invoked before disabling or deleting a @vport. Note that the physical3116 * port is treated as @vport 0.3117 **/3118void3119lpfc_stop_vport_timers(struct lpfc_vport *vport)3120{3121	del_timer_sync(&vport->els_tmofunc);3122	del_timer_sync(&vport->delayed_disc_tmo);3123	lpfc_can_disctmo(vport);3124	return;3125}3126 3127/**3128 * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer3129 * @phba: pointer to lpfc hba data structure.3130 *3131 * This routine stops the SLI4 FCF rediscover wait timer if it's on. The3132 * caller of this routine should already hold the host lock.3133 **/3134void3135__lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)3136{3137	/* Clear pending FCF rediscovery wait flag */3138	phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;3139 3140	/* Now, try to stop the timer */3141	del_timer(&phba->fcf.redisc_wait);3142}3143 3144/**3145 * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer3146 * @phba: pointer to lpfc hba data structure.3147 *3148 * This routine stops the SLI4 FCF rediscover wait timer if it's on. It3149 * checks whether the FCF rediscovery wait timer is pending with the host3150 * lock held before proceeding with disabling the timer and clearing the3151 * wait timer pendig flag.3152 **/3153void3154lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)3155{3156	spin_lock_irq(&phba->hbalock);3157	if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {3158		/* FCF rediscovery timer already fired or stopped */3159		spin_unlock_irq(&phba->hbalock);3160		return;3161	}3162	__lpfc_sli4_stop_fcf_redisc_wait_timer(phba);3163	/* Clear failover in progress flags */3164	phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);3165	spin_unlock_irq(&phba->hbalock);3166}3167 3168/**3169 * lpfc_cmf_stop - Stop CMF processing3170 * @phba: pointer to lpfc hba data structure.3171 *3172 * This is called when the link goes down or if CMF mode is turned OFF.3173 * It is also called when going offline or unloaded just before the3174 * congestion info buffer is unregistered.3175 **/3176void3177lpfc_cmf_stop(struct lpfc_hba *phba)3178{3179	int cpu;3180	struct lpfc_cgn_stat *cgs;3181 3182	/* We only do something if CMF is enabled */3183	if (!phba->sli4_hba.pc_sli4_params.cmf)3184		return;3185 3186	lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,3187			"6221 Stop CMF / Cancel Timer\n");3188 3189	/* Cancel the CMF timer */3190	hrtimer_cancel(&phba->cmf_stats_timer);3191	hrtimer_cancel(&phba->cmf_timer);3192 3193	/* Zero CMF counters */3194	atomic_set(&phba->cmf_busy, 0);3195	for_each_present_cpu(cpu) {3196		cgs = per_cpu_ptr(phba->cmf_stat, cpu);3197		atomic64_set(&cgs->total_bytes, 0);3198		atomic64_set(&cgs->rcv_bytes, 0);3199		atomic_set(&cgs->rx_io_cnt, 0);3200		atomic64_set(&cgs->rx_latency, 0);3201	}3202	atomic_set(&phba->cmf_bw_wait, 0);3203 3204	/* Resume any blocked IO - Queue unblock on workqueue */3205	queue_work(phba->wq, &phba->unblock_request_work);3206}3207 3208static inline uint64_t3209lpfc_get_max_line_rate(struct lpfc_hba *phba)3210{3211	uint64_t rate = lpfc_sli_port_speed_get(phba);3212 3213	return ((((unsigned long)rate) * 1024 * 1024) / 10);3214}3215 3216void3217lpfc_cmf_signal_init(struct lpfc_hba *phba)3218{3219	lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,3220			"6223 Signal CMF init\n");3221 3222	/* Use the new fc_linkspeed to recalculate */3223	phba->cmf_interval_rate = LPFC_CMF_INTERVAL;3224	phba->cmf_max_line_rate = lpfc_get_max_line_rate(phba);3225	phba->cmf_link_byte_count = div_u64(phba->cmf_max_line_rate *3226					    phba->cmf_interval_rate, 1000);3227	phba->cmf_max_bytes_per_interval = phba->cmf_link_byte_count;3228 3229	/* This is a signal to firmware to sync up CMF BW with link speed */3230	lpfc_issue_cmf_sync_wqe(phba, 0, 0);3231}3232 3233/**3234 * lpfc_cmf_start - Start CMF processing3235 * @phba: pointer to lpfc hba data structure.3236 *3237 * This is called when the link comes up or if CMF mode is turned OFF3238 * to Monitor or Managed.3239 **/3240void3241lpfc_cmf_start(struct lpfc_hba *phba)3242{3243	struct lpfc_cgn_stat *cgs;3244	int cpu;3245 3246	/* We only do something if CMF is enabled */3247	if (!phba->sli4_hba.pc_sli4_params.cmf ||3248	    phba->cmf_active_mode == LPFC_CFG_OFF)3249		return;3250 3251	/* Reinitialize congestion buffer info */3252	lpfc_init_congestion_buf(phba);3253 3254	atomic_set(&phba->cgn_fabric_warn_cnt, 0);3255	atomic_set(&phba->cgn_fabric_alarm_cnt, 0);3256	atomic_set(&phba->cgn_sync_alarm_cnt, 0);3257	atomic_set(&phba->cgn_sync_warn_cnt, 0);3258 3259	atomic_set(&phba->cmf_busy, 0);3260	for_each_present_cpu(cpu) {3261		cgs = per_cpu_ptr(phba->cmf_stat, cpu);3262		atomic64_set(&cgs->total_bytes, 0);3263		atomic64_set(&cgs->rcv_bytes, 0);3264		atomic_set(&cgs->rx_io_cnt, 0);3265		atomic64_set(&cgs->rx_latency, 0);3266	}3267	phba->cmf_latency.tv_sec = 0;3268	phba->cmf_latency.tv_nsec = 0;3269 3270	lpfc_cmf_signal_init(phba);3271 3272	lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,3273			"6222 Start CMF / Timer\n");3274 3275	phba->cmf_timer_cnt = 0;3276	hrtimer_start(&phba->cmf_timer,3277		      ktime_set(0, LPFC_CMF_INTERVAL * NSEC_PER_MSEC),3278		      HRTIMER_MODE_REL);3279	hrtimer_start(&phba->cmf_stats_timer,3280		      ktime_set(0, LPFC_SEC_MIN * NSEC_PER_SEC),3281		      HRTIMER_MODE_REL);3282	/* Setup for latency check in IO cmpl routines */3283	ktime_get_real_ts64(&phba->cmf_latency);3284 3285	atomic_set(&phba->cmf_bw_wait, 0);3286	atomic_set(&phba->cmf_stop_io, 0);3287}3288 3289/**3290 * lpfc_stop_hba_timers - Stop all the timers associated with an HBA3291 * @phba: pointer to lpfc hba data structure.3292 *3293 * This routine stops all the timers associated with a HBA. This function is3294 * invoked before either putting a HBA offline or unloading the driver.3295 **/3296void3297lpfc_stop_hba_timers(struct lpfc_hba *phba)3298{3299	if (phba->pport)3300		lpfc_stop_vport_timers(phba->pport);3301	cancel_delayed_work_sync(&phba->eq_delay_work);3302	cancel_delayed_work_sync(&phba->idle_stat_delay_work);3303	del_timer_sync(&phba->sli.mbox_tmo);3304	del_timer_sync(&phba->fabric_block_timer);3305	del_timer_sync(&phba->eratt_poll);3306	del_timer_sync(&phba->hb_tmofunc);3307	if (phba->sli_rev == LPFC_SLI_REV4) {3308		del_timer_sync(&phba->rrq_tmr);3309		clear_bit(HBA_RRQ_ACTIVE, &phba->hba_flag);3310	}3311	clear_bit(HBA_HBEAT_INP, &phba->hba_flag);3312	clear_bit(HBA_HBEAT_TMO, &phba->hba_flag);3313 3314	switch (phba->pci_dev_grp) {3315	case LPFC_PCI_DEV_LP:3316		/* Stop any LightPulse device specific driver timers */3317		del_timer_sync(&phba->fcp_poll_timer);3318		break;3319	case LPFC_PCI_DEV_OC:3320		/* Stop any OneConnect device specific driver timers */3321		lpfc_sli4_stop_fcf_redisc_wait_timer(phba);3322		break;3323	default:3324		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,3325				"0297 Invalid device group (x%x)\n",3326				phba->pci_dev_grp);3327		break;3328	}3329	return;3330}3331 3332/**3333 * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked3334 * @phba: pointer to lpfc hba data structure.3335 * @mbx_action: flag for mailbox no wait action.3336 *3337 * This routine marks a HBA's management interface as blocked. Once the HBA's3338 * management interface is marked as blocked, all the user space access to3339 * the HBA, whether they are from sysfs interface or libdfc interface will3340 * all be blocked. The HBA is set to block the management interface when the3341 * driver prepares the HBA interface for online or offline.3342 **/3343static void3344lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)3345{3346	unsigned long iflag;3347	uint8_t actcmd = MBX_HEARTBEAT;3348	unsigned long timeout;3349 3350	spin_lock_irqsave(&phba->hbalock, iflag);3351	phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;3352	spin_unlock_irqrestore(&phba->hbalock, iflag);3353	if (mbx_action == LPFC_MBX_NO_WAIT)3354		return;3355	timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;3356	spin_lock_irqsave(&phba->hbalock, iflag);3357	if (phba->sli.mbox_active) {3358		actcmd = phba->sli.mbox_active->u.mb.mbxCommand;3359		/* Determine how long we might wait for the active mailbox3360		 * command to be gracefully completed by firmware.3361		 */3362		timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,3363				phba->sli.mbox_active) * 1000) + jiffies;3364	}3365	spin_unlock_irqrestore(&phba->hbalock, iflag);3366 3367	/* Wait for the outstnading mailbox command to complete */3368	while (phba->sli.mbox_active) {3369		/* Check active mailbox complete status every 2ms */3370		msleep(2);3371		if (time_after(jiffies, timeout)) {3372			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,3373					"2813 Mgmt IO is Blocked %x "3374					"- mbox cmd %x still active\n",3375					phba->sli.sli_flag, actcmd);3376			break;3377		}3378	}3379}3380 3381/**3382 * lpfc_sli4_node_prep - Assign RPIs for active nodes.3383 * @phba: pointer to lpfc hba data structure.3384 *3385 * Allocate RPIs for all active remote nodes. This is needed whenever3386 * an SLI4 adapter is reset and the driver is not unloading. Its purpose3387 * is to fixup the temporary rpi assignments.3388 **/3389void3390lpfc_sli4_node_prep(struct lpfc_hba *phba)3391{3392	struct lpfc_nodelist  *ndlp, *next_ndlp;3393	struct lpfc_vport **vports;3394	int i, rpi;3395 3396	if (phba->sli_rev != LPFC_SLI_REV4)3397		return;3398 3399	vports = lpfc_create_vport_work_array(phba);3400	if (vports == NULL)3401		return;3402 3403	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {3404		if (test_bit(FC_UNLOADING, &vports[i]->load_flag))3405			continue;3406 3407		list_for_each_entry_safe(ndlp, next_ndlp,3408					 &vports[i]->fc_nodes,3409					 nlp_listp) {3410			rpi = lpfc_sli4_alloc_rpi(phba);3411			if (rpi == LPFC_RPI_ALLOC_ERROR) {3412				/* TODO print log? */3413				continue;3414			}3415			ndlp->nlp_rpi = rpi;3416			lpfc_printf_vlog(ndlp->vport, KERN_INFO,3417					 LOG_NODE | LOG_DISCOVERY,3418					 "0009 Assign RPI x%x to ndlp x%px "3419					 "DID:x%06x flg:x%x\n",3420					 ndlp->nlp_rpi, ndlp, ndlp->nlp_DID,3421					 ndlp->nlp_flag);3422		}3423	}3424	lpfc_destroy_vport_work_array(phba, vports);3425}3426 3427/**3428 * lpfc_create_expedite_pool - create expedite pool3429 * @phba: pointer to lpfc hba data structure.3430 *3431 * This routine moves a batch of XRIs from lpfc_io_buf_list_put of HWQ 03432 * to expedite pool. Mark them as expedite.3433 **/3434static void lpfc_create_expedite_pool(struct lpfc_hba *phba)3435{3436	struct lpfc_sli4_hdw_queue *qp;3437	struct lpfc_io_buf *lpfc_ncmd;3438	struct lpfc_io_buf *lpfc_ncmd_next;3439	struct lpfc_epd_pool *epd_pool;3440	unsigned long iflag;3441 3442	epd_pool = &phba->epd_pool;3443	qp = &phba->sli4_hba.hdwq[0];3444 3445	spin_lock_init(&epd_pool->lock);3446	spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);3447	spin_lock(&epd_pool->lock);3448	INIT_LIST_HEAD(&epd_pool->list);3449	list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,3450				 &qp->lpfc_io_buf_list_put, list) {3451		list_move_tail(&lpfc_ncmd->list, &epd_pool->list);3452		lpfc_ncmd->expedite = true;3453		qp->put_io_bufs--;3454		epd_pool->count++;3455		if (epd_pool->count >= XRI_BATCH)3456			break;3457	}3458	spin_unlock(&epd_pool->lock);3459	spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);3460}3461 3462/**3463 * lpfc_destroy_expedite_pool - destroy expedite pool3464 * @phba: pointer to lpfc hba data structure.3465 *3466 * This routine returns XRIs from expedite pool to lpfc_io_buf_list_put3467 * of HWQ 0. Clear the mark.3468 **/3469static void lpfc_destroy_expedite_pool(struct lpfc_hba *phba)3470{3471	struct lpfc_sli4_hdw_queue *qp;3472	struct lpfc_io_buf *lpfc_ncmd;3473	struct lpfc_io_buf *lpfc_ncmd_next;3474	struct lpfc_epd_pool *epd_pool;3475	unsigned long iflag;3476 3477	epd_pool = &phba->epd_pool;3478	qp = &phba->sli4_hba.hdwq[0];3479 3480	spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);3481	spin_lock(&epd_pool->lock);3482	list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,3483				 &epd_pool->list, list) {3484		list_move_tail(&lpfc_ncmd->list,3485			       &qp->lpfc_io_buf_list_put);3486		lpfc_ncmd->flags = false;3487		qp->put_io_bufs++;3488		epd_pool->count--;3489	}3490	spin_unlock(&epd_pool->lock);3491	spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);3492}3493 3494/**3495 * lpfc_create_multixri_pools - create multi-XRI pools3496 * @phba: pointer to lpfc hba data structure.3497 *3498 * This routine initialize public, private per HWQ. Then, move XRIs from3499 * lpfc_io_buf_list_put to public pool. High and low watermark are also3500 * Initialized.3501 **/3502void lpfc_create_multixri_pools(struct lpfc_hba *phba)3503{3504	u32 i, j;3505	u32 hwq_count;3506	u32 count_per_hwq;3507	struct lpfc_io_buf *lpfc_ncmd;3508	struct lpfc_io_buf *lpfc_ncmd_next;3509	unsigned long iflag;3510	struct lpfc_sli4_hdw_queue *qp;3511	struct lpfc_multixri_pool *multixri_pool;3512	struct lpfc_pbl_pool *pbl_pool;3513	struct lpfc_pvt_pool *pvt_pool;3514 3515	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,3516			"1234 num_hdw_queue=%d num_present_cpu=%d common_xri_cnt=%d\n",3517			phba->cfg_hdw_queue, phba->sli4_hba.num_present_cpu,3518			phba->sli4_hba.io_xri_cnt);3519 3520	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)3521		lpfc_create_expedite_pool(phba);3522 3523	hwq_count = phba->cfg_hdw_queue;3524	count_per_hwq = phba->sli4_hba.io_xri_cnt / hwq_count;3525 3526	for (i = 0; i < hwq_count; i++) {3527		multixri_pool = kzalloc(sizeof(*multixri_pool), GFP_KERNEL);3528 3529		if (!multixri_pool) {3530			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,3531					"1238 Failed to allocate memory for "3532					"multixri_pool\n");3533 3534			if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)3535				lpfc_destroy_expedite_pool(phba);3536 3537			j = 0;3538			while (j < i) {3539				qp = &phba->sli4_hba.hdwq[j];3540				kfree(qp->p_multixri_pool);3541				j++;3542			}3543			phba->cfg_xri_rebalancing = 0;3544			return;3545		}3546 3547		qp = &phba->sli4_hba.hdwq[i];3548		qp->p_multixri_pool = multixri_pool;3549 3550		multixri_pool->xri_limit = count_per_hwq;3551		multixri_pool->rrb_next_hwqid = i;3552 3553		/* Deal with public free xri pool */3554		pbl_pool = &multixri_pool->pbl_pool;3555		spin_lock_init(&pbl_pool->lock);3556		spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);3557		spin_lock(&pbl_pool->lock);3558		INIT_LIST_HEAD(&pbl_pool->list);3559		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,3560					 &qp->lpfc_io_buf_list_put, list) {3561			list_move_tail(&lpfc_ncmd->list, &pbl_pool->list);3562			qp->put_io_bufs--;3563			pbl_pool->count++;3564		}3565		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,3566				"1235 Moved %d buffers from PUT list over to pbl_pool[%d]\n",3567				pbl_pool->count, i);3568		spin_unlock(&pbl_pool->lock);3569		spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);3570 3571		/* Deal with private free xri pool */3572		pvt_pool = &multixri_pool->pvt_pool;3573		pvt_pool->high_watermark = multixri_pool->xri_limit / 2;3574		pvt_pool->low_watermark = XRI_BATCH;3575		spin_lock_init(&pvt_pool->lock);3576		spin_lock_irqsave(&pvt_pool->lock, iflag);3577		INIT_LIST_HEAD(&pvt_pool->list);3578		pvt_pool->count = 0;3579		spin_unlock_irqrestore(&pvt_pool->lock, iflag);3580	}3581}3582 3583/**3584 * lpfc_destroy_multixri_pools - destroy multi-XRI pools3585 * @phba: pointer to lpfc hba data structure.3586 *3587 * This routine returns XRIs from public/private to lpfc_io_buf_list_put.3588 **/3589static void lpfc_destroy_multixri_pools(struct lpfc_hba *phba)3590{3591	u32 i;3592	u32 hwq_count;3593	struct lpfc_io_buf *lpfc_ncmd;3594	struct lpfc_io_buf *lpfc_ncmd_next;3595	unsigned long iflag;3596	struct lpfc_sli4_hdw_queue *qp;3597	struct lpfc_multixri_pool *multixri_pool;3598	struct lpfc_pbl_pool *pbl_pool;3599	struct lpfc_pvt_pool *pvt_pool;3600 3601	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)3602		lpfc_destroy_expedite_pool(phba);3603 3604	if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))3605		lpfc_sli_flush_io_rings(phba);3606 3607	hwq_count = phba->cfg_hdw_queue;3608 3609	for (i = 0; i < hwq_count; i++) {3610		qp = &phba->sli4_hba.hdwq[i];3611		multixri_pool = qp->p_multixri_pool;3612		if (!multixri_pool)3613			continue;3614 3615		qp->p_multixri_pool = NULL;3616 3617		spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);3618 3619		/* Deal with public free xri pool */3620		pbl_pool = &multixri_pool->pbl_pool;3621		spin_lock(&pbl_pool->lock);3622 3623		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,3624				"1236 Moving %d buffers from pbl_pool[%d] TO PUT list\n",3625				pbl_pool->count, i);3626 3627		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,3628					 &pbl_pool->list, list) {3629			list_move_tail(&lpfc_ncmd->list,3630				       &qp->lpfc_io_buf_list_put);3631			qp->put_io_bufs++;3632			pbl_pool->count--;3633		}3634 3635		INIT_LIST_HEAD(&pbl_pool->list);3636		pbl_pool->count = 0;3637 3638		spin_unlock(&pbl_pool->lock);3639 3640		/* Deal with private free xri pool */3641		pvt_pool = &multixri_pool->pvt_pool;3642		spin_lock(&pvt_pool->lock);3643 3644		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,3645				"1237 Moving %d buffers from pvt_pool[%d] TO PUT list\n",3646				pvt_pool->count, i);3647 3648		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,3649					 &pvt_pool->list, list) {3650			list_move_tail(&lpfc_ncmd->list,3651				       &qp->lpfc_io_buf_list_put);3652			qp->put_io_bufs++;3653			pvt_pool->count--;3654		}3655 3656		INIT_LIST_HEAD(&pvt_pool->list);3657		pvt_pool->count = 0;3658 3659		spin_unlock(&pvt_pool->lock);3660		spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);3661 3662		kfree(multixri_pool);3663	}3664}3665 3666/**3667 * lpfc_online - Initialize and bring a HBA online3668 * @phba: pointer to lpfc hba data structure.3669 *3670 * This routine initializes the HBA and brings a HBA online. During this3671 * process, the management interface is blocked to prevent user space access3672 * to the HBA interfering with the driver initialization.3673 *3674 * Return codes3675 *   0 - successful3676 *   1 - failed3677 **/3678int3679lpfc_online(struct lpfc_hba *phba)3680{3681	struct lpfc_vport *vport;3682	struct lpfc_vport **vports;3683	int i, error = 0;3684	bool vpis_cleared = false;3685 3686	if (!phba)3687		return 0;3688	vport = phba->pport;3689 3690	if (!test_bit(FC_OFFLINE_MODE, &vport->fc_flag))3691		return 0;3692 3693	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,3694			"0458 Bring Adapter online\n");3695 3696	lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);3697 3698	if (phba->sli_rev == LPFC_SLI_REV4) {3699		if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */3700			lpfc_unblock_mgmt_io(phba);3701			return 1;3702		}3703		spin_lock_irq(&phba->hbalock);3704		if (!phba->sli4_hba.max_cfg_param.vpi_used)3705			vpis_cleared = true;3706		spin_unlock_irq(&phba->hbalock);3707 3708		/* Reestablish the local initiator port.3709		 * The offline process destroyed the previous lport.3710		 */3711		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&3712				!phba->nvmet_support) {3713			error = lpfc_nvme_create_localport(phba->pport);3714			if (error)3715				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,3716					"6132 NVME restore reg failed "3717					"on nvmei error x%x\n", error);3718		}3719	} else {3720		lpfc_sli_queue_init(phba);3721		if (lpfc_sli_hba_setup(phba)) {	/* Initialize SLI2/SLI3 HBA */3722			lpfc_unblock_mgmt_io(phba);3723			return 1;3724		}3725	}3726 3727	vports = lpfc_create_vport_work_array(phba);3728	if (vports != NULL) {3729		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {3730			clear_bit(FC_OFFLINE_MODE, &vports[i]->fc_flag);3731			if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)3732				set_bit(FC_VPORT_NEEDS_REG_VPI,3733					&vports[i]->fc_flag);3734			if (phba->sli_rev == LPFC_SLI_REV4) {3735				set_bit(FC_VPORT_NEEDS_INIT_VPI,3736					&vports[i]->fc_flag);3737				if ((vpis_cleared) &&3738				    (vports[i]->port_type !=3739					LPFC_PHYSICAL_PORT))3740					vports[i]->vpi = 0;3741			}3742		}3743	}3744	lpfc_destroy_vport_work_array(phba, vports);3745 3746	if (phba->cfg_xri_rebalancing)3747		lpfc_create_multixri_pools(phba);3748 3749	lpfc_cpuhp_add(phba);3750 3751	lpfc_unblock_mgmt_io(phba);3752	return 0;3753}3754 3755/**3756 * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked3757 * @phba: pointer to lpfc hba data structure.3758 *3759 * This routine marks a HBA's management interface as not blocked. Once the3760 * HBA's management interface is marked as not blocked, all the user space3761 * access to the HBA, whether they are from sysfs interface or libdfc3762 * interface will be allowed. The HBA is set to block the management interface3763 * when the driver prepares the HBA interface for online or offline and then3764 * set to unblock the management interface afterwards.3765 **/3766void3767lpfc_unblock_mgmt_io(struct lpfc_hba * phba)3768{3769	unsigned long iflag;3770 3771	spin_lock_irqsave(&phba->hbalock, iflag);3772	phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;3773	spin_unlock_irqrestore(&phba->hbalock, iflag);3774}3775 3776/**3777 * lpfc_offline_prep - Prepare a HBA to be brought offline3778 * @phba: pointer to lpfc hba data structure.3779 * @mbx_action: flag for mailbox shutdown action.3780 *3781 * This routine is invoked to prepare a HBA to be brought offline. It performs3782 * unregistration login to all the nodes on all vports and flushes the mailbox3783 * queue to make it ready to be brought offline.3784 **/3785void3786lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)3787{3788	struct lpfc_vport *vport = phba->pport;3789	struct lpfc_nodelist  *ndlp, *next_ndlp;3790	struct lpfc_vport **vports;3791	struct Scsi_Host *shost;3792	int i;3793	int offline;3794	bool hba_pci_err;3795 3796	if (test_bit(FC_OFFLINE_MODE, &vport->fc_flag))3797		return;3798 3799	lpfc_block_mgmt_io(phba, mbx_action);3800 3801	lpfc_linkdown(phba);3802 3803	offline =  pci_channel_offline(phba->pcidev);3804	hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);3805 3806	/* Issue an unreg_login to all nodes on all vports */3807	vports = lpfc_create_vport_work_array(phba);3808	if (vports != NULL) {3809		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {3810			if (test_bit(FC_UNLOADING, &vports[i]->load_flag))3811				continue;3812			shost = lpfc_shost_from_vport(vports[i]);3813			spin_lock_irq(shost->host_lock);3814			vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;3815			spin_unlock_irq(shost->host_lock);3816			set_bit(FC_VPORT_NEEDS_REG_VPI, &vports[i]->fc_flag);3817			clear_bit(FC_VFI_REGISTERED, &vports[i]->fc_flag);3818 3819			list_for_each_entry_safe(ndlp, next_ndlp,3820						 &vports[i]->fc_nodes,3821						 nlp_listp) {3822 3823				spin_lock_irq(&ndlp->lock);3824				ndlp->nlp_flag &= ~NLP_NPR_ADISC;3825				spin_unlock_irq(&ndlp->lock);3826 3827				if (offline || hba_pci_err) {3828					spin_lock_irq(&ndlp->lock);3829					ndlp->nlp_flag &= ~(NLP_UNREG_INP |3830							    NLP_RPI_REGISTERED);3831					spin_unlock_irq(&ndlp->lock);3832					if (phba->sli_rev == LPFC_SLI_REV4)3833						lpfc_sli_rpi_release(vports[i],3834								     ndlp);3835				} else {3836					lpfc_unreg_rpi(vports[i], ndlp);3837				}3838				/*3839				 * Whenever an SLI4 port goes offline, free the3840				 * RPI. Get a new RPI when the adapter port3841				 * comes back online.3842				 */3843				if (phba->sli_rev == LPFC_SLI_REV4) {3844					lpfc_printf_vlog(vports[i], KERN_INFO,3845						 LOG_NODE | LOG_DISCOVERY,3846						 "0011 Free RPI x%x on "3847						 "ndlp: x%px did x%x\n",3848						 ndlp->nlp_rpi, ndlp,3849						 ndlp->nlp_DID);3850					lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);3851					ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;3852				}3853 3854				if (ndlp->nlp_type & NLP_FABRIC) {3855					lpfc_disc_state_machine(vports[i], ndlp,3856						NULL, NLP_EVT_DEVICE_RECOVERY);3857 3858					/* Don't remove the node unless the node3859					 * has been unregistered with the3860					 * transport, and we're not in recovery3861					 * before dev_loss_tmo triggered.3862					 * Otherwise, let dev_loss take care of3863					 * the node.3864					 */3865					if (!(ndlp->save_flags &3866					      NLP_IN_RECOV_POST_DEV_LOSS) &&3867					    !(ndlp->fc4_xpt_flags &3868					      (NVME_XPT_REGD | SCSI_XPT_REGD)))3869						lpfc_disc_state_machine3870							(vports[i], ndlp,3871							 NULL,3872							 NLP_EVT_DEVICE_RM);3873				}3874			}3875		}3876	}3877	lpfc_destroy_vport_work_array(phba, vports);3878 3879	lpfc_sli_mbox_sys_shutdown(phba, mbx_action);3880 3881	if (phba->wq)3882		flush_workqueue(phba->wq);3883}3884 3885/**3886 * lpfc_offline - Bring a HBA offline3887 * @phba: pointer to lpfc hba data structure.3888 *3889 * This routine actually brings a HBA offline. It stops all the timers3890 * associated with the HBA, brings down the SLI layer, and eventually3891 * marks the HBA as in offline state for the upper layer protocol.3892 **/3893void3894lpfc_offline(struct lpfc_hba *phba)3895{3896	struct Scsi_Host  *shost;3897	struct lpfc_vport **vports;3898	int i;3899 3900	if (test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))3901		return;3902 3903	/* stop port and all timers associated with this hba */3904	lpfc_stop_port(phba);3905 3906	/* Tear down the local and target port registrations.  The3907	 * nvme transports need to cleanup.3908	 */3909	lpfc_nvmet_destroy_targetport(phba);3910	lpfc_nvme_destroy_localport(phba->pport);3911 3912	vports = lpfc_create_vport_work_array(phba);3913	if (vports != NULL)3914		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)3915			lpfc_stop_vport_timers(vports[i]);3916	lpfc_destroy_vport_work_array(phba, vports);3917	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,3918			"0460 Bring Adapter offline\n");3919	/* Bring down the SLI Layer and cleanup.  The HBA is offline3920	   now.  */3921	lpfc_sli_hba_down(phba);3922	spin_lock_irq(&phba->hbalock);3923	phba->work_ha = 0;3924	spin_unlock_irq(&phba->hbalock);3925	vports = lpfc_create_vport_work_array(phba);3926	if (vports != NULL)3927		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {3928			shost = lpfc_shost_from_vport(vports[i]);3929			spin_lock_irq(shost->host_lock);3930			vports[i]->work_port_events = 0;3931			spin_unlock_irq(shost->host_lock);3932			set_bit(FC_OFFLINE_MODE, &vports[i]->fc_flag);3933		}3934	lpfc_destroy_vport_work_array(phba, vports);3935	/* If OFFLINE flag is clear (i.e. unloading), cpuhp removal is handled3936	 * in hba_unset3937	 */3938	if (test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))3939		__lpfc_cpuhp_remove(phba);3940 3941	if (phba->cfg_xri_rebalancing)3942		lpfc_destroy_multixri_pools(phba);3943}3944 3945/**3946 * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists3947 * @phba: pointer to lpfc hba data structure.3948 *3949 * This routine is to free all the SCSI buffers and IOCBs from the driver3950 * list back to kernel. It is called from lpfc_pci_remove_one to free3951 * the internal resources before the device is removed from the system.3952 **/3953static void3954lpfc_scsi_free(struct lpfc_hba *phba)3955{3956	struct lpfc_io_buf *sb, *sb_next;3957 3958	if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))3959		return;3960 3961	spin_lock_irq(&phba->hbalock);3962 3963	/* Release all the lpfc_scsi_bufs maintained by this host. */3964 3965	spin_lock(&phba->scsi_buf_list_put_lock);3966	list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_put,3967				 list) {3968		list_del(&sb->list);3969		dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,3970			      sb->dma_handle);3971		kfree(sb);3972		phba->total_scsi_bufs--;3973	}3974	spin_unlock(&phba->scsi_buf_list_put_lock);3975 3976	spin_lock(&phba->scsi_buf_list_get_lock);3977	list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_get,3978				 list) {3979		list_del(&sb->list);3980		dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,3981			      sb->dma_handle);3982		kfree(sb);3983		phba->total_scsi_bufs--;3984	}3985	spin_unlock(&phba->scsi_buf_list_get_lock);3986	spin_unlock_irq(&phba->hbalock);3987}3988 3989/**3990 * lpfc_io_free - Free all the IO buffers and IOCBs from driver lists3991 * @phba: pointer to lpfc hba data structure.3992 *3993 * This routine is to free all the IO buffers and IOCBs from the driver3994 * list back to kernel. It is called from lpfc_pci_remove_one to free3995 * the internal resources before the device is removed from the system.3996 **/3997void3998lpfc_io_free(struct lpfc_hba *phba)3999{4000	struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;4001	struct lpfc_sli4_hdw_queue *qp;4002	int idx;4003 4004	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {4005		qp = &phba->sli4_hba.hdwq[idx];4006		/* Release all the lpfc_nvme_bufs maintained by this host. */4007		spin_lock(&qp->io_buf_list_put_lock);4008		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,4009					 &qp->lpfc_io_buf_list_put,4010					 list) {4011			list_del(&lpfc_ncmd->list);4012			qp->put_io_bufs--;4013			dma_pool_free(phba->lpfc_sg_dma_buf_pool,4014				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);4015			if (phba->cfg_xpsgl && !phba->nvmet_support)4016				lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);4017			lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);4018			kfree(lpfc_ncmd);4019			qp->total_io_bufs--;4020		}4021		spin_unlock(&qp->io_buf_list_put_lock);4022 4023		spin_lock(&qp->io_buf_list_get_lock);4024		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,4025					 &qp->lpfc_io_buf_list_get,4026					 list) {4027			list_del(&lpfc_ncmd->list);4028			qp->get_io_bufs--;4029			dma_pool_free(phba->lpfc_sg_dma_buf_pool,4030				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);4031			if (phba->cfg_xpsgl && !phba->nvmet_support)4032				lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);4033			lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);4034			kfree(lpfc_ncmd);4035			qp->total_io_bufs--;4036		}4037		spin_unlock(&qp->io_buf_list_get_lock);4038	}4039}4040 4041/**4042 * lpfc_sli4_els_sgl_update - update ELS xri-sgl sizing and mapping4043 * @phba: pointer to lpfc hba data structure.4044 *4045 * This routine first calculates the sizes of the current els and allocated4046 * scsi sgl lists, and then goes through all sgls to updates the physical4047 * XRIs assigned due to port function reset. During port initialization, the4048 * current els and allocated scsi sgl lists are 0s.4049 *4050 * Return codes4051 *   0 - successful (for now, it always returns 0)4052 **/4053int4054lpfc_sli4_els_sgl_update(struct lpfc_hba *phba)4055{4056	struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;4057	uint16_t i, lxri, xri_cnt, els_xri_cnt;4058	LIST_HEAD(els_sgl_list);4059	int rc;4060 4061	/*4062	 * update on pci function's els xri-sgl list4063	 */4064	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);4065 4066	if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) {4067		/* els xri-sgl expanded */4068		xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt;4069		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,4070				"3157 ELS xri-sgl count increased from "4071				"%d to %d\n", phba->sli4_hba.els_xri_cnt,4072				els_xri_cnt);4073		/* allocate the additional els sgls */4074		for (i = 0; i < xri_cnt; i++) {4075			sglq_entry = kzalloc(sizeof(struct lpfc_sglq),4076					     GFP_KERNEL);4077			if (sglq_entry == NULL) {4078				lpfc_printf_log(phba, KERN_ERR,4079						LOG_TRACE_EVENT,4080						"2562 Failure to allocate an "4081						"ELS sgl entry:%d\n", i);4082				rc = -ENOMEM;4083				goto out_free_mem;4084			}4085			sglq_entry->buff_type = GEN_BUFF_TYPE;4086			sglq_entry->virt = lpfc_mbuf_alloc(phba, 0,4087							   &sglq_entry->phys);4088			if (sglq_entry->virt == NULL) {4089				kfree(sglq_entry);4090				lpfc_printf_log(phba, KERN_ERR,4091						LOG_TRACE_EVENT,4092						"2563 Failure to allocate an "4093						"ELS mbuf:%d\n", i);4094				rc = -ENOMEM;4095				goto out_free_mem;4096			}4097			sglq_entry->sgl = sglq_entry->virt;4098			memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);4099			sglq_entry->state = SGL_FREED;4100			list_add_tail(&sglq_entry->list, &els_sgl_list);4101		}4102		spin_lock_irq(&phba->sli4_hba.sgl_list_lock);4103		list_splice_init(&els_sgl_list,4104				 &phba->sli4_hba.lpfc_els_sgl_list);4105		spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);4106	} else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) {4107		/* els xri-sgl shrinked */4108		xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt;4109		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,4110				"3158 ELS xri-sgl count decreased from "4111				"%d to %d\n", phba->sli4_hba.els_xri_cnt,4112				els_xri_cnt);4113		spin_lock_irq(&phba->sli4_hba.sgl_list_lock);4114		list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list,4115				 &els_sgl_list);4116		/* release extra els sgls from list */4117		for (i = 0; i < xri_cnt; i++) {4118			list_remove_head(&els_sgl_list,4119					 sglq_entry, struct lpfc_sglq, list);4120			if (sglq_entry) {4121				__lpfc_mbuf_free(phba, sglq_entry->virt,4122						 sglq_entry->phys);4123				kfree(sglq_entry);4124			}4125		}4126		list_splice_init(&els_sgl_list,4127				 &phba->sli4_hba.lpfc_els_sgl_list);4128		spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);4129	} else4130		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,4131				"3163 ELS xri-sgl count unchanged: %d\n",4132				els_xri_cnt);4133	phba->sli4_hba.els_xri_cnt = els_xri_cnt;4134 4135	/* update xris to els sgls on the list */4136	sglq_entry = NULL;4137	sglq_entry_next = NULL;4138	list_for_each_entry_safe(sglq_entry, sglq_entry_next,4139				 &phba->sli4_hba.lpfc_els_sgl_list, list) {4140		lxri = lpfc_sli4_next_xritag(phba);4141		if (lxri == NO_XRI) {4142			lpfc_printf_log(phba, KERN_ERR,4143					LOG_TRACE_EVENT,4144					"2400 Failed to allocate xri for "4145					"ELS sgl\n");4146			rc = -ENOMEM;4147			goto out_free_mem;4148		}4149		sglq_entry->sli4_lxritag = lxri;4150		sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];4151	}4152	return 0;4153 4154out_free_mem:4155	lpfc_free_els_sgl_list(phba);4156	return rc;4157}4158 4159/**4160 * lpfc_sli4_nvmet_sgl_update - update xri-sgl sizing and mapping4161 * @phba: pointer to lpfc hba data structure.4162 *4163 * This routine first calculates the sizes of the current els and allocated4164 * scsi sgl lists, and then goes through all sgls to updates the physical4165 * XRIs assigned due to port function reset. During port initialization, the4166 * current els and allocated scsi sgl lists are 0s.4167 *4168 * Return codes4169 *   0 - successful (for now, it always returns 0)4170 **/4171int4172lpfc_sli4_nvmet_sgl_update(struct lpfc_hba *phba)4173{4174	struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;4175	uint16_t i, lxri, xri_cnt, els_xri_cnt;4176	uint16_t nvmet_xri_cnt;4177	LIST_HEAD(nvmet_sgl_list);4178	int rc;4179 4180	/*4181	 * update on pci function's nvmet xri-sgl list4182	 */4183	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);4184 4185	/* For NVMET, ALL remaining XRIs are dedicated for IO processing */4186	nvmet_xri_cnt = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;4187	if (nvmet_xri_cnt > phba->sli4_hba.nvmet_xri_cnt) {4188		/* els xri-sgl expanded */4189		xri_cnt = nvmet_xri_cnt - phba->sli4_hba.nvmet_xri_cnt;4190		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,4191				"6302 NVMET xri-sgl cnt grew from %d to %d\n",4192				phba->sli4_hba.nvmet_xri_cnt, nvmet_xri_cnt);4193		/* allocate the additional nvmet sgls */4194		for (i = 0; i < xri_cnt; i++) {4195			sglq_entry = kzalloc(sizeof(struct lpfc_sglq),4196					     GFP_KERNEL);4197			if (sglq_entry == NULL) {4198				lpfc_printf_log(phba, KERN_ERR,4199						LOG_TRACE_EVENT,4200						"6303 Failure to allocate an "4201						"NVMET sgl entry:%d\n", i);4202				rc = -ENOMEM;4203				goto out_free_mem;4204			}4205			sglq_entry->buff_type = NVMET_BUFF_TYPE;4206			sglq_entry->virt = lpfc_nvmet_buf_alloc(phba, 0,4207							   &sglq_entry->phys);4208			if (sglq_entry->virt == NULL) {4209				kfree(sglq_entry);4210				lpfc_printf_log(phba, KERN_ERR,4211						LOG_TRACE_EVENT,4212						"6304 Failure to allocate an "4213						"NVMET buf:%d\n", i);4214				rc = -ENOMEM;4215				goto out_free_mem;4216			}4217			sglq_entry->sgl = sglq_entry->virt;4218			memset(sglq_entry->sgl, 0,4219			       phba->cfg_sg_dma_buf_size);4220			sglq_entry->state = SGL_FREED;4221			list_add_tail(&sglq_entry->list, &nvmet_sgl_list);4222		}4223		spin_lock_irq(&phba->hbalock);4224		spin_lock(&phba->sli4_hba.sgl_list_lock);4225		list_splice_init(&nvmet_sgl_list,4226				 &phba->sli4_hba.lpfc_nvmet_sgl_list);4227		spin_unlock(&phba->sli4_hba.sgl_list_lock);4228		spin_unlock_irq(&phba->hbalock);4229	} else if (nvmet_xri_cnt < phba->sli4_hba.nvmet_xri_cnt) {4230		/* nvmet xri-sgl shrunk */4231		xri_cnt = phba->sli4_hba.nvmet_xri_cnt - nvmet_xri_cnt;4232		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,4233				"6305 NVMET xri-sgl count decreased from "4234				"%d to %d\n", phba->sli4_hba.nvmet_xri_cnt,4235				nvmet_xri_cnt);4236		spin_lock_irq(&phba->hbalock);4237		spin_lock(&phba->sli4_hba.sgl_list_lock);4238		list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list,4239				 &nvmet_sgl_list);4240		/* release extra nvmet sgls from list */4241		for (i = 0; i < xri_cnt; i++) {4242			list_remove_head(&nvmet_sgl_list,4243					 sglq_entry, struct lpfc_sglq, list);4244			if (sglq_entry) {4245				lpfc_nvmet_buf_free(phba, sglq_entry->virt,4246						    sglq_entry->phys);4247				kfree(sglq_entry);4248			}4249		}4250		list_splice_init(&nvmet_sgl_list,4251				 &phba->sli4_hba.lpfc_nvmet_sgl_list);4252		spin_unlock(&phba->sli4_hba.sgl_list_lock);4253		spin_unlock_irq(&phba->hbalock);4254	} else4255		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,4256				"6306 NVMET xri-sgl count unchanged: %d\n",4257				nvmet_xri_cnt);4258	phba->sli4_hba.nvmet_xri_cnt = nvmet_xri_cnt;4259 4260	/* update xris to nvmet sgls on the list */4261	sglq_entry = NULL;4262	sglq_entry_next = NULL;4263	list_for_each_entry_safe(sglq_entry, sglq_entry_next,4264				 &phba->sli4_hba.lpfc_nvmet_sgl_list, list) {4265		lxri = lpfc_sli4_next_xritag(phba);4266		if (lxri == NO_XRI) {4267			lpfc_printf_log(phba, KERN_ERR,4268					LOG_TRACE_EVENT,4269					"6307 Failed to allocate xri for "4270					"NVMET sgl\n");4271			rc = -ENOMEM;4272			goto out_free_mem;4273		}4274		sglq_entry->sli4_lxritag = lxri;4275		sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];4276	}4277	return 0;4278 4279out_free_mem:4280	lpfc_free_nvmet_sgl_list(phba);4281	return rc;4282}4283 4284int4285lpfc_io_buf_flush(struct lpfc_hba *phba, struct list_head *cbuf)4286{4287	LIST_HEAD(blist);4288	struct lpfc_sli4_hdw_queue *qp;4289	struct lpfc_io_buf *lpfc_cmd;4290	struct lpfc_io_buf *iobufp, *prev_iobufp;4291	int idx, cnt, xri, inserted;4292 4293	cnt = 0;4294	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {4295		qp = &phba->sli4_hba.hdwq[idx];4296		spin_lock_irq(&qp->io_buf_list_get_lock);4297		spin_lock(&qp->io_buf_list_put_lock);4298 4299		/* Take everything off the get and put lists */4300		list_splice_init(&qp->lpfc_io_buf_list_get, &blist);4301		list_splice(&qp->lpfc_io_buf_list_put, &blist);4302		INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);4303		INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);4304		cnt += qp->get_io_bufs + qp->put_io_bufs;4305		qp->get_io_bufs = 0;4306		qp->put_io_bufs = 0;4307		qp->total_io_bufs = 0;4308		spin_unlock(&qp->io_buf_list_put_lock);4309		spin_unlock_irq(&qp->io_buf_list_get_lock);4310	}4311 4312	/*4313	 * Take IO buffers off blist and put on cbuf sorted by XRI.4314	 * This is because POST_SGL takes a sequential range of XRIs4315	 * to post to the firmware.4316	 */4317	for (idx = 0; idx < cnt; idx++) {4318		list_remove_head(&blist, lpfc_cmd, struct lpfc_io_buf, list);4319		if (!lpfc_cmd)4320			return cnt;4321		if (idx == 0) {4322			list_add_tail(&lpfc_cmd->list, cbuf);4323			continue;4324		}4325		xri = lpfc_cmd->cur_iocbq.sli4_xritag;4326		inserted = 0;4327		prev_iobufp = NULL;4328		list_for_each_entry(iobufp, cbuf, list) {4329			if (xri < iobufp->cur_iocbq.sli4_xritag) {4330				if (prev_iobufp)4331					list_add(&lpfc_cmd->list,4332						 &prev_iobufp->list);4333				else4334					list_add(&lpfc_cmd->list, cbuf);4335				inserted = 1;4336				break;4337			}4338			prev_iobufp = iobufp;4339		}4340		if (!inserted)4341			list_add_tail(&lpfc_cmd->list, cbuf);4342	}4343	return cnt;4344}4345 4346int4347lpfc_io_buf_replenish(struct lpfc_hba *phba, struct list_head *cbuf)4348{4349	struct lpfc_sli4_hdw_queue *qp;4350	struct lpfc_io_buf *lpfc_cmd;4351	int idx, cnt;4352	unsigned long iflags;4353 4354	qp = phba->sli4_hba.hdwq;4355	cnt = 0;4356	while (!list_empty(cbuf)) {4357		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {4358			list_remove_head(cbuf, lpfc_cmd,4359					 struct lpfc_io_buf, list);4360			if (!lpfc_cmd)4361				return cnt;4362			cnt++;4363			qp = &phba->sli4_hba.hdwq[idx];4364			lpfc_cmd->hdwq_no = idx;4365			lpfc_cmd->hdwq = qp;4366			lpfc_cmd->cur_iocbq.cmd_cmpl = NULL;4367			spin_lock_irqsave(&qp->io_buf_list_put_lock, iflags);4368			list_add_tail(&lpfc_cmd->list,4369				      &qp->lpfc_io_buf_list_put);4370			qp->put_io_bufs++;4371			qp->total_io_bufs++;4372			spin_unlock_irqrestore(&qp->io_buf_list_put_lock,4373					       iflags);4374		}4375	}4376	return cnt;4377}4378 4379/**4380 * lpfc_sli4_io_sgl_update - update xri-sgl sizing and mapping4381 * @phba: pointer to lpfc hba data structure.4382 *4383 * This routine first calculates the sizes of the current els and allocated4384 * scsi sgl lists, and then goes through all sgls to updates the physical4385 * XRIs assigned due to port function reset. During port initialization, the4386 * current els and allocated scsi sgl lists are 0s.4387 *4388 * Return codes4389 *   0 - successful (for now, it always returns 0)4390 **/4391int4392lpfc_sli4_io_sgl_update(struct lpfc_hba *phba)4393{4394	struct lpfc_io_buf *lpfc_ncmd = NULL, *lpfc_ncmd_next = NULL;4395	uint16_t i, lxri, els_xri_cnt;4396	uint16_t io_xri_cnt, io_xri_max;4397	LIST_HEAD(io_sgl_list);4398	int rc, cnt;4399 4400	/*4401	 * update on pci function's allocated nvme xri-sgl list4402	 */4403 4404	/* maximum number of xris available for nvme buffers */4405	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);4406	io_xri_max = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;4407	phba->sli4_hba.io_xri_max = io_xri_max;4408 4409	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,4410			"6074 Current allocated XRI sgl count:%d, "4411			"maximum XRI count:%d els_xri_cnt:%d\n\n",4412			phba->sli4_hba.io_xri_cnt,4413			phba->sli4_hba.io_xri_max,4414			els_xri_cnt);4415 4416	cnt = lpfc_io_buf_flush(phba, &io_sgl_list);4417 4418	if (phba->sli4_hba.io_xri_cnt > phba->sli4_hba.io_xri_max) {4419		/* max nvme xri shrunk below the allocated nvme buffers */4420		io_xri_cnt = phba->sli4_hba.io_xri_cnt -4421					phba->sli4_hba.io_xri_max;4422		/* release the extra allocated nvme buffers */4423		for (i = 0; i < io_xri_cnt; i++) {4424			list_remove_head(&io_sgl_list, lpfc_ncmd,4425					 struct lpfc_io_buf, list);4426			if (lpfc_ncmd) {4427				dma_pool_free(phba->lpfc_sg_dma_buf_pool,4428					      lpfc_ncmd->data,4429					      lpfc_ncmd->dma_handle);4430				kfree(lpfc_ncmd);4431			}4432		}4433		phba->sli4_hba.io_xri_cnt -= io_xri_cnt;4434	}4435 4436	/* update xris associated to remaining allocated nvme buffers */4437	lpfc_ncmd = NULL;4438	lpfc_ncmd_next = NULL;4439	phba->sli4_hba.io_xri_cnt = cnt;4440	list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,4441				 &io_sgl_list, list) {4442		lxri = lpfc_sli4_next_xritag(phba);4443		if (lxri == NO_XRI) {4444			lpfc_printf_log(phba, KERN_ERR,4445					LOG_TRACE_EVENT,4446					"6075 Failed to allocate xri for "4447					"nvme buffer\n");4448			rc = -ENOMEM;4449			goto out_free_mem;4450		}4451		lpfc_ncmd->cur_iocbq.sli4_lxritag = lxri;4452		lpfc_ncmd->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];4453	}4454	cnt = lpfc_io_buf_replenish(phba, &io_sgl_list);4455	return 0;4456 4457out_free_mem:4458	lpfc_io_free(phba);4459	return rc;4460}4461 4462/**4463 * lpfc_new_io_buf - IO buffer allocator for HBA with SLI4 IF spec4464 * @phba: Pointer to lpfc hba data structure.4465 * @num_to_alloc: The requested number of buffers to allocate.4466 *4467 * This routine allocates nvme buffers for device with SLI-4 interface spec,4468 * the nvme buffer contains all the necessary information needed to initiate4469 * an I/O. After allocating up to @num_to_allocate IO buffers and put4470 * them on a list, it post them to the port by using SGL block post.4471 *4472 * Return codes:4473 *   int - number of IO buffers that were allocated and posted.4474 *   0 = failure, less than num_to_alloc is a partial failure.4475 **/4476int4477lpfc_new_io_buf(struct lpfc_hba *phba, int num_to_alloc)4478{4479	struct lpfc_io_buf *lpfc_ncmd;4480	struct lpfc_iocbq *pwqeq;4481	uint16_t iotag, lxri = 0;4482	int bcnt, num_posted;4483	LIST_HEAD(prep_nblist);4484	LIST_HEAD(post_nblist);4485	LIST_HEAD(nvme_nblist);4486 4487	phba->sli4_hba.io_xri_cnt = 0;4488	for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {4489		lpfc_ncmd = kzalloc(sizeof(*lpfc_ncmd), GFP_KERNEL);4490		if (!lpfc_ncmd)4491			break;4492		/*4493		 * Get memory from the pci pool to map the virt space to4494		 * pci bus space for an I/O. The DMA buffer includes the4495		 * number of SGE's necessary to support the sg_tablesize.4496		 */4497		lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,4498						  GFP_KERNEL,4499						  &lpfc_ncmd->dma_handle);4500		if (!lpfc_ncmd->data) {4501			kfree(lpfc_ncmd);4502			break;4503		}4504 4505		if (phba->cfg_xpsgl && !phba->nvmet_support) {4506			INIT_LIST_HEAD(&lpfc_ncmd->dma_sgl_xtra_list);4507		} else {4508			/*4509			 * 4K Page alignment is CRITICAL to BlockGuard, double4510			 * check to be sure.4511			 */4512			if ((phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&4513			    (((unsigned long)(lpfc_ncmd->data) &4514			    (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {4515				lpfc_printf_log(phba, KERN_ERR,4516						LOG_TRACE_EVENT,4517						"3369 Memory alignment err: "4518						"addr=%lx\n",4519						(unsigned long)lpfc_ncmd->data);4520				dma_pool_free(phba->lpfc_sg_dma_buf_pool,4521					      lpfc_ncmd->data,4522					      lpfc_ncmd->dma_handle);4523				kfree(lpfc_ncmd);4524				break;4525			}4526		}4527 4528		INIT_LIST_HEAD(&lpfc_ncmd->dma_cmd_rsp_list);4529 4530		lxri = lpfc_sli4_next_xritag(phba);4531		if (lxri == NO_XRI) {4532			dma_pool_free(phba->lpfc_sg_dma_buf_pool,4533				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);4534			kfree(lpfc_ncmd);4535			break;4536		}4537		pwqeq = &lpfc_ncmd->cur_iocbq;4538 4539		/* Allocate iotag for lpfc_ncmd->cur_iocbq. */4540		iotag = lpfc_sli_next_iotag(phba, pwqeq);4541		if (iotag == 0) {4542			dma_pool_free(phba->lpfc_sg_dma_buf_pool,4543				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);4544			kfree(lpfc_ncmd);4545			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,4546					"6121 Failed to allocate IOTAG for"4547					" XRI:0x%x\n", lxri);4548			lpfc_sli4_free_xri(phba, lxri);4549			break;4550		}4551		pwqeq->sli4_lxritag = lxri;4552		pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri];4553 4554		/* Initialize local short-hand pointers. */4555		lpfc_ncmd->dma_sgl = lpfc_ncmd->data;4556		lpfc_ncmd->dma_phys_sgl = lpfc_ncmd->dma_handle;4557		lpfc_ncmd->cur_iocbq.io_buf = lpfc_ncmd;4558		spin_lock_init(&lpfc_ncmd->buf_lock);4559 4560		/* add the nvme buffer to a post list */4561		list_add_tail(&lpfc_ncmd->list, &post_nblist);4562		phba->sli4_hba.io_xri_cnt++;4563	}4564	lpfc_printf_log(phba, KERN_INFO, LOG_NVME,4565			"6114 Allocate %d out of %d requested new NVME "4566			"buffers of size x%zu bytes\n", bcnt, num_to_alloc,4567			sizeof(*lpfc_ncmd));4568 4569 4570	/* post the list of nvme buffer sgls to port if available */4571	if (!list_empty(&post_nblist))4572		num_posted = lpfc_sli4_post_io_sgl_list(4573				phba, &post_nblist, bcnt);4574	else4575		num_posted = 0;4576 4577	return num_posted;4578}4579 4580static uint64_t4581lpfc_get_wwpn(struct lpfc_hba *phba)4582{4583	uint64_t wwn;4584	int rc;4585	LPFC_MBOXQ_t *mboxq;4586	MAILBOX_t *mb;4587 4588	mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,4589						GFP_KERNEL);4590	if (!mboxq)4591		return (uint64_t)-1;4592 4593	/* First get WWN of HBA instance */4594	lpfc_read_nv(phba, mboxq);4595	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);4596	if (rc != MBX_SUCCESS) {4597		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,4598				"6019 Mailbox failed , mbxCmd x%x "4599				"READ_NV, mbxStatus x%x\n",4600				bf_get(lpfc_mqe_command, &mboxq->u.mqe),4601				bf_get(lpfc_mqe_status, &mboxq->u.mqe));4602		mempool_free(mboxq, phba->mbox_mem_pool);4603		return (uint64_t) -1;4604	}4605	mb = &mboxq->u.mb;4606	memcpy(&wwn, (char *)mb->un.varRDnvp.portname, sizeof(uint64_t));4607	/* wwn is WWPN of HBA instance */4608	mempool_free(mboxq, phba->mbox_mem_pool);4609	if (phba->sli_rev == LPFC_SLI_REV4)4610		return be64_to_cpu(wwn);4611	else4612		return rol64(wwn, 32);4613}4614 4615static unsigned short lpfc_get_sg_tablesize(struct lpfc_hba *phba)4616{4617	if (phba->sli_rev == LPFC_SLI_REV4)4618		if (phba->cfg_xpsgl && !phba->nvmet_support)4619			return LPFC_MAX_SG_TABLESIZE;4620		else4621			return phba->cfg_scsi_seg_cnt;4622	else4623		return phba->cfg_sg_seg_cnt;4624}4625 4626/**4627 * lpfc_vmid_res_alloc - Allocates resources for VMID4628 * @phba: pointer to lpfc hba data structure.4629 * @vport: pointer to vport data structure4630 *4631 * This routine allocated the resources needed for the VMID.4632 *4633 * Return codes4634 *	0 on Success4635 *	Non-0 on Failure4636 */4637static int4638lpfc_vmid_res_alloc(struct lpfc_hba *phba, struct lpfc_vport *vport)4639{4640	/* VMID feature is supported only on SLI4 */4641	if (phba->sli_rev == LPFC_SLI_REV3) {4642		phba->cfg_vmid_app_header = 0;4643		phba->cfg_vmid_priority_tagging = 0;4644	}4645 4646	if (lpfc_is_vmid_enabled(phba)) {4647		vport->vmid =4648		    kcalloc(phba->cfg_max_vmid, sizeof(struct lpfc_vmid),4649			    GFP_KERNEL);4650		if (!vport->vmid)4651			return -ENOMEM;4652 4653		rwlock_init(&vport->vmid_lock);4654 4655		/* Set the VMID parameters for the vport */4656		vport->vmid_priority_tagging = phba->cfg_vmid_priority_tagging;4657		vport->vmid_inactivity_timeout =4658		    phba->cfg_vmid_inactivity_timeout;4659		vport->max_vmid = phba->cfg_max_vmid;4660		vport->cur_vmid_cnt = 0;4661 4662		vport->vmid_priority_range = bitmap_zalloc4663			(LPFC_VMID_MAX_PRIORITY_RANGE, GFP_KERNEL);4664 4665		if (!vport->vmid_priority_range) {4666			kfree(vport->vmid);4667			return -ENOMEM;4668		}4669 4670		hash_init(vport->hash_table);4671	}4672	return 0;4673}4674 4675/**4676 * lpfc_create_port - Create an FC port4677 * @phba: pointer to lpfc hba data structure.4678 * @instance: a unique integer ID to this FC port.4679 * @dev: pointer to the device data structure.4680 *4681 * This routine creates a FC port for the upper layer protocol. The FC port4682 * can be created on top of either a physical port or a virtual port provided4683 * by the HBA. This routine also allocates a SCSI host data structure (shost)4684 * and associates the FC port created before adding the shost into the SCSI4685 * layer.4686 *4687 * Return codes4688 *   @vport - pointer to the virtual N_Port data structure.4689 *   NULL - port create failed.4690 **/4691struct lpfc_vport *4692lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)4693{4694	struct lpfc_vport *vport;4695	struct Scsi_Host  *shost = NULL;4696	struct scsi_host_template *template;4697	int error = 0;4698	int i;4699	uint64_t wwn;4700	bool use_no_reset_hba = false;4701	int rc;4702	u8 if_type;4703 4704	if (lpfc_no_hba_reset_cnt) {4705		if (phba->sli_rev < LPFC_SLI_REV4 &&4706		    dev == &phba->pcidev->dev) {4707			/* Reset the port first */4708			lpfc_sli_brdrestart(phba);4709			rc = lpfc_sli_chipset_init(phba);4710			if (rc)4711				return NULL;4712		}4713		wwn = lpfc_get_wwpn(phba);4714	}4715 4716	for (i = 0; i < lpfc_no_hba_reset_cnt; i++) {4717		if (wwn == lpfc_no_hba_reset[i]) {4718			lpfc_printf_log(phba, KERN_ERR,4719					LOG_TRACE_EVENT,4720					"6020 Setting use_no_reset port=%llx\n",4721					wwn);4722			use_no_reset_hba = true;4723			break;4724		}4725	}4726 4727	/* Seed template for SCSI host registration */4728	if (dev == &phba->pcidev->dev) {4729		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {4730			/* Seed physical port template */4731			template = &lpfc_template;4732 4733			if (use_no_reset_hba)4734				/* template is for a no reset SCSI Host */4735				template->eh_host_reset_handler = NULL;4736 4737			/* Seed updated value of sg_tablesize */4738			template->sg_tablesize = lpfc_get_sg_tablesize(phba);4739		} else {4740			/* NVMET is for physical port only */4741			template = &lpfc_template_nvme;4742		}4743	} else {4744		/* Seed vport template */4745		template = &lpfc_vport_template;4746 4747		/* Seed updated value of sg_tablesize */4748		template->sg_tablesize = lpfc_get_sg_tablesize(phba);4749	}4750 4751	shost = scsi_host_alloc(template, sizeof(struct lpfc_vport));4752	if (!shost)4753		goto out;4754 4755	vport = (struct lpfc_vport *) shost->hostdata;4756	vport->phba = phba;4757	set_bit(FC_LOADING, &vport->load_flag);4758	set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);4759	vport->fc_rscn_flush = 0;4760	atomic_set(&vport->fc_plogi_cnt, 0);4761	atomic_set(&vport->fc_adisc_cnt, 0);4762	atomic_set(&vport->fc_reglogin_cnt, 0);4763	atomic_set(&vport->fc_prli_cnt, 0);4764	atomic_set(&vport->fc_unmap_cnt, 0);4765	atomic_set(&vport->fc_map_cnt, 0);4766	atomic_set(&vport->fc_npr_cnt, 0);4767	atomic_set(&vport->fc_unused_cnt, 0);4768	lpfc_get_vport_cfgparam(vport);4769 4770	/* Adjust value in vport */4771	vport->cfg_enable_fc4_type = phba->cfg_enable_fc4_type;4772 4773	shost->unique_id = instance;4774	shost->max_id = LPFC_MAX_TARGET;4775	shost->max_lun = vport->cfg_max_luns;4776	shost->this_id = -1;4777 4778	/* Set max_cmd_len applicable to ASIC support */4779	if (phba->sli_rev == LPFC_SLI_REV4) {4780		if_type = bf_get(lpfc_sli_intf_if_type,4781				 &phba->sli4_hba.sli_intf);4782		switch (if_type) {4783		case LPFC_SLI_INTF_IF_TYPE_2:4784			fallthrough;4785		case LPFC_SLI_INTF_IF_TYPE_6:4786			shost->max_cmd_len = LPFC_FCP_CDB_LEN_32;4787			break;4788		default:4789			shost->max_cmd_len = LPFC_FCP_CDB_LEN;4790			break;4791		}4792	} else {4793		shost->max_cmd_len = LPFC_FCP_CDB_LEN;4794	}4795 4796	if (phba->sli_rev == LPFC_SLI_REV4) {4797		if (!phba->cfg_fcp_mq_threshold ||4798		    phba->cfg_fcp_mq_threshold > phba->cfg_hdw_queue)4799			phba->cfg_fcp_mq_threshold = phba->cfg_hdw_queue;4800 4801		shost->nr_hw_queues = min_t(int, 2 * num_possible_nodes(),4802					    phba->cfg_fcp_mq_threshold);4803 4804		shost->dma_boundary =4805			phba->sli4_hba.pc_sli4_params.sge_supp_len-1;4806	} else4807		/* SLI-3 has a limited number of hardware queues (3),4808		 * thus there is only one for FCP processing.4809		 */4810		shost->nr_hw_queues = 1;4811 4812	/*4813	 * Set initial can_queue value since 0 is no longer supported and4814	 * scsi_add_host will fail. This will be adjusted later based on the4815	 * max xri value determined in hba setup.4816	 */4817	shost->can_queue = phba->cfg_hba_queue_depth - 10;4818	if (dev != &phba->pcidev->dev) {4819		shost->transportt = lpfc_vport_transport_template;4820		vport->port_type = LPFC_NPIV_PORT;4821	} else {4822		shost->transportt = lpfc_transport_template;4823		vport->port_type = LPFC_PHYSICAL_PORT;4824	}4825 4826	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,4827			"9081 CreatePort TMPLATE type %x TBLsize %d "4828			"SEGcnt %d/%d\n",4829			vport->port_type, shost->sg_tablesize,4830			phba->cfg_scsi_seg_cnt, phba->cfg_sg_seg_cnt);4831 4832	/* Allocate the resources for VMID */4833	rc = lpfc_vmid_res_alloc(phba, vport);4834 4835	if (rc)4836		goto out_put_shost;4837 4838	/* Initialize all internally managed lists. */4839	INIT_LIST_HEAD(&vport->fc_nodes);4840	spin_lock_init(&vport->fc_nodes_list_lock);4841	INIT_LIST_HEAD(&vport->rcv_buffer_list);4842	spin_lock_init(&vport->work_port_lock);4843 4844	timer_setup(&vport->fc_disctmo, lpfc_disc_timeout, 0);4845 4846	timer_setup(&vport->els_tmofunc, lpfc_els_timeout, 0);4847 4848	timer_setup(&vport->delayed_disc_tmo, lpfc_delayed_disc_tmo, 0);4849 4850	if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)4851		lpfc_setup_bg(phba, shost);4852 4853	error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);4854	if (error)4855		goto out_free_vmid;4856 4857	spin_lock_irq(&phba->port_list_lock);4858	list_add_tail(&vport->listentry, &phba->port_list);4859	spin_unlock_irq(&phba->port_list_lock);4860	return vport;4861 4862out_free_vmid:4863	kfree(vport->vmid);4864	bitmap_free(vport->vmid_priority_range);4865out_put_shost:4866	scsi_host_put(shost);4867out:4868	return NULL;4869}4870 4871/**4872 * destroy_port -  destroy an FC port4873 * @vport: pointer to an lpfc virtual N_Port data structure.4874 *4875 * This routine destroys a FC port from the upper layer protocol. All the4876 * resources associated with the port are released.4877 **/4878void4879destroy_port(struct lpfc_vport *vport)4880{4881	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);4882	struct lpfc_hba  *phba = vport->phba;4883 4884	lpfc_debugfs_terminate(vport);4885	fc_remove_host(shost);4886	scsi_remove_host(shost);4887 4888	spin_lock_irq(&phba->port_list_lock);4889	list_del_init(&vport->listentry);4890	spin_unlock_irq(&phba->port_list_lock);4891 4892	lpfc_cleanup(vport);4893	return;4894}4895 4896/**4897 * lpfc_get_instance - Get a unique integer ID4898 *4899 * This routine allocates a unique integer ID from lpfc_hba_index pool. It4900 * uses the kernel idr facility to perform the task.4901 *4902 * Return codes:4903 *   instance - a unique integer ID allocated as the new instance.4904 *   -1 - lpfc get instance failed.4905 **/4906int4907lpfc_get_instance(void)4908{4909	int ret;4910 4911	ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);4912	return ret < 0 ? -1 : ret;4913}4914 4915/**4916 * lpfc_scan_finished - method for SCSI layer to detect whether scan is done4917 * @shost: pointer to SCSI host data structure.4918 * @time: elapsed time of the scan in jiffies.4919 *4920 * This routine is called by the SCSI layer with a SCSI host to determine4921 * whether the scan host is finished.4922 *4923 * Note: there is no scan_start function as adapter initialization will have4924 * asynchronously kicked off the link initialization.4925 *4926 * Return codes4927 *   0 - SCSI host scan is not over yet.4928 *   1 - SCSI host scan is over.4929 **/4930int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)4931{4932	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;4933	struct lpfc_hba   *phba = vport->phba;4934	int stat = 0;4935 4936	spin_lock_irq(shost->host_lock);4937 4938	if (test_bit(FC_UNLOADING, &vport->load_flag)) {4939		stat = 1;4940		goto finished;4941	}4942	if (time >= msecs_to_jiffies(30 * 1000)) {4943		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,4944				"0461 Scanning longer than 30 "4945				"seconds.  Continuing initialization\n");4946		stat = 1;4947		goto finished;4948	}4949	if (time >= msecs_to_jiffies(15 * 1000) &&4950	    phba->link_state <= LPFC_LINK_DOWN) {4951		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,4952				"0465 Link down longer than 15 "4953				"seconds.  Continuing initialization\n");4954		stat = 1;4955		goto finished;4956	}4957 4958	if (vport->port_state != LPFC_VPORT_READY)4959		goto finished;4960	if (vport->num_disc_nodes || vport->fc_prli_sent)4961		goto finished;4962	if (!atomic_read(&vport->fc_map_cnt) &&4963	    time < msecs_to_jiffies(2 * 1000))4964		goto finished;4965	if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)4966		goto finished;4967 4968	stat = 1;4969 4970finished:4971	spin_unlock_irq(shost->host_lock);4972	return stat;4973}4974 4975static void lpfc_host_supported_speeds_set(struct Scsi_Host *shost)4976{4977	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;4978	struct lpfc_hba   *phba = vport->phba;4979 4980	fc_host_supported_speeds(shost) = 0;4981	/*4982	 * Avoid reporting supported link speed for FCoE as it can't be4983	 * controlled via FCoE.4984	 */4985	if (test_bit(HBA_FCOE_MODE, &phba->hba_flag))4986		return;4987 4988	if (phba->lmt & LMT_256Gb)4989		fc_host_supported_speeds(shost) |= FC_PORTSPEED_256GBIT;4990	if (phba->lmt & LMT_128Gb)4991		fc_host_supported_speeds(shost) |= FC_PORTSPEED_128GBIT;4992	if (phba->lmt & LMT_64Gb)4993		fc_host_supported_speeds(shost) |= FC_PORTSPEED_64GBIT;4994	if (phba->lmt & LMT_32Gb)4995		fc_host_supported_speeds(shost) |= FC_PORTSPEED_32GBIT;4996	if (phba->lmt & LMT_16Gb)4997		fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;4998	if (phba->lmt & LMT_10Gb)4999		fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;5000	if (phba->lmt & LMT_8Gb)5001		fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;5002	if (phba->lmt & LMT_4Gb)5003		fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;5004	if (phba->lmt & LMT_2Gb)5005		fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;5006	if (phba->lmt & LMT_1Gb)5007		fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;5008}5009 5010/**5011 * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port5012 * @shost: pointer to SCSI host data structure.5013 *5014 * This routine initializes a given SCSI host attributes on a FC port. The5015 * SCSI host can be either on top of a physical port or a virtual port.5016 **/5017void lpfc_host_attrib_init(struct Scsi_Host *shost)5018{5019	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;5020	struct lpfc_hba   *phba = vport->phba;5021	/*5022	 * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().5023	 */5024 5025	fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);5026	fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);5027	fc_host_supported_classes(shost) = FC_COS_CLASS3;5028 5029	memset(fc_host_supported_fc4s(shost), 0,5030	       sizeof(fc_host_supported_fc4s(shost)));5031	fc_host_supported_fc4s(shost)[2] = 1;5032	fc_host_supported_fc4s(shost)[7] = 1;5033 5034	lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),5035				 sizeof fc_host_symbolic_name(shost));5036 5037	lpfc_host_supported_speeds_set(shost);5038 5039	fc_host_maxframe_size(shost) =5040		(((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |5041		(uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;5042 5043	fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;5044 5045	/* This value is also unchanging */5046	memset(fc_host_active_fc4s(shost), 0,5047	       sizeof(fc_host_active_fc4s(shost)));5048	fc_host_active_fc4s(shost)[2] = 1;5049	fc_host_active_fc4s(shost)[7] = 1;5050 5051	fc_host_max_npiv_vports(shost) = phba->max_vpi;5052	clear_bit(FC_LOADING, &vport->load_flag);5053}5054 5055/**5056 * lpfc_stop_port_s3 - Stop SLI3 device port5057 * @phba: pointer to lpfc hba data structure.5058 *5059 * This routine is invoked to stop an SLI3 device port, it stops the device5060 * from generating interrupts and stops the device driver's timers for the5061 * device.5062 **/5063static void5064lpfc_stop_port_s3(struct lpfc_hba *phba)5065{5066	/* Clear all interrupt enable conditions */5067	writel(0, phba->HCregaddr);5068	readl(phba->HCregaddr); /* flush */5069	/* Clear all pending interrupts */5070	writel(0xffffffff, phba->HAregaddr);5071	readl(phba->HAregaddr); /* flush */5072 5073	/* Reset some HBA SLI setup states */5074	lpfc_stop_hba_timers(phba);5075	phba->pport->work_port_events = 0;5076}5077 5078/**5079 * lpfc_stop_port_s4 - Stop SLI4 device port5080 * @phba: pointer to lpfc hba data structure.5081 *5082 * This routine is invoked to stop an SLI4 device port, it stops the device5083 * from generating interrupts and stops the device driver's timers for the5084 * device.5085 **/5086static void5087lpfc_stop_port_s4(struct lpfc_hba *phba)5088{5089	/* Reset some HBA SLI4 setup states */5090	lpfc_stop_hba_timers(phba);5091	if (phba->pport)5092		phba->pport->work_port_events = 0;5093	phba->sli4_hba.intr_enable = 0;5094}5095 5096/**5097 * lpfc_stop_port - Wrapper function for stopping hba port5098 * @phba: Pointer to HBA context object.5099 *5100 * This routine wraps the actual SLI3 or SLI4 hba stop port routine from5101 * the API jump table function pointer from the lpfc_hba struct.5102 **/5103void5104lpfc_stop_port(struct lpfc_hba *phba)5105{5106	phba->lpfc_stop_port(phba);5107 5108	if (phba->wq)5109		flush_workqueue(phba->wq);5110}5111 5112/**5113 * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer5114 * @phba: Pointer to hba for which this call is being executed.5115 *5116 * This routine starts the timer waiting for the FCF rediscovery to complete.5117 **/5118void5119lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)5120{5121	unsigned long fcf_redisc_wait_tmo =5122		(jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));5123	/* Start fcf rediscovery wait period timer */5124	mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);5125	spin_lock_irq(&phba->hbalock);5126	/* Allow action to new fcf asynchronous event */5127	phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);5128	/* Mark the FCF rediscovery pending state */5129	phba->fcf.fcf_flag |= FCF_REDISC_PEND;5130	spin_unlock_irq(&phba->hbalock);5131}5132 5133/**5134 * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout5135 * @t: Timer context used to obtain the pointer to lpfc hba data structure.5136 *5137 * This routine is invoked when waiting for FCF table rediscover has been5138 * timed out. If new FCF record(s) has (have) been discovered during the5139 * wait period, a new FCF event shall be added to the FCOE async event5140 * list, and then worker thread shall be waked up for processing from the5141 * worker thread context.5142 **/5143static void5144lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list *t)5145{5146	struct lpfc_hba *phba = from_timer(phba, t, fcf.redisc_wait);5147 5148	/* Don't send FCF rediscovery event if timer cancelled */5149	spin_lock_irq(&phba->hbalock);5150	if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {5151		spin_unlock_irq(&phba->hbalock);5152		return;5153	}5154	/* Clear FCF rediscovery timer pending flag */5155	phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;5156	/* FCF rediscovery event to worker thread */5157	phba->fcf.fcf_flag |= FCF_REDISC_EVT;5158	spin_unlock_irq(&phba->hbalock);5159	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,5160			"2776 FCF rediscover quiescent timer expired\n");5161	/* wake up worker thread */5162	lpfc_worker_wake_up(phba);5163}5164 5165/**5166 * lpfc_vmid_poll - VMID timeout detection5167 * @t: Timer context used to obtain the pointer to lpfc hba data structure.5168 *5169 * This routine is invoked when there is no I/O on by a VM for the specified5170 * amount of time. When this situation is detected, the VMID has to be5171 * deregistered from the switch and all the local resources freed. The VMID5172 * will be reassigned to the VM once the I/O begins.5173 **/5174static void5175lpfc_vmid_poll(struct timer_list *t)5176{5177	struct lpfc_hba *phba = from_timer(phba, t, inactive_vmid_poll);5178	u32 wake_up = 0;5179 5180	/* check if there is a need to issue QFPA */5181	if (phba->pport->vmid_priority_tagging) {5182		wake_up = 1;5183		phba->pport->work_port_events |= WORKER_CHECK_VMID_ISSUE_QFPA;5184	}5185 5186	/* Is the vmid inactivity timer enabled */5187	if (phba->pport->vmid_inactivity_timeout ||5188	    test_bit(FC_DEREGISTER_ALL_APP_ID, &phba->pport->load_flag)) {5189		wake_up = 1;5190		phba->pport->work_port_events |= WORKER_CHECK_INACTIVE_VMID;5191	}5192 5193	if (wake_up)5194		lpfc_worker_wake_up(phba);5195 5196	/* restart the timer for the next iteration */5197	mod_timer(&phba->inactive_vmid_poll, jiffies + msecs_to_jiffies(1000 *5198							LPFC_VMID_TIMER));5199}5200 5201/**5202 * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code5203 * @phba: pointer to lpfc hba data structure.5204 * @acqe_link: pointer to the async link completion queue entry.5205 *5206 * This routine is to parse the SLI4 link-attention link fault code.5207 **/5208static void5209lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,5210			   struct lpfc_acqe_link *acqe_link)5211{5212	switch (bf_get(lpfc_acqe_fc_la_att_type, acqe_link)) {5213	case LPFC_FC_LA_TYPE_LINK_DOWN:5214	case LPFC_FC_LA_TYPE_TRUNKING_EVENT:5215	case LPFC_FC_LA_TYPE_ACTIVATE_FAIL:5216	case LPFC_FC_LA_TYPE_LINK_RESET_PRTCL_EVT:5217		break;5218	default:5219		switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {5220		case LPFC_ASYNC_LINK_FAULT_NONE:5221		case LPFC_ASYNC_LINK_FAULT_LOCAL:5222		case LPFC_ASYNC_LINK_FAULT_REMOTE:5223		case LPFC_ASYNC_LINK_FAULT_LR_LRR:5224			break;5225		default:5226			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,5227					"0398 Unknown link fault code: x%x\n",5228					bf_get(lpfc_acqe_link_fault, acqe_link));5229			break;5230		}5231		break;5232	}5233}5234 5235/**5236 * lpfc_sli4_parse_latt_type - Parse sli4 link attention type5237 * @phba: pointer to lpfc hba data structure.5238 * @acqe_link: pointer to the async link completion queue entry.5239 *5240 * This routine is to parse the SLI4 link attention type and translate it5241 * into the base driver's link attention type coding.5242 *5243 * Return: Link attention type in terms of base driver's coding.5244 **/5245static uint8_t5246lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,5247			  struct lpfc_acqe_link *acqe_link)5248{5249	uint8_t att_type;5250 5251	switch (bf_get(lpfc_acqe_link_status, acqe_link)) {5252	case LPFC_ASYNC_LINK_STATUS_DOWN:5253	case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:5254		att_type = LPFC_ATT_LINK_DOWN;5255		break;5256	case LPFC_ASYNC_LINK_STATUS_UP:5257		/* Ignore physical link up events - wait for logical link up */5258		att_type = LPFC_ATT_RESERVED;5259		break;5260	case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:5261		att_type = LPFC_ATT_LINK_UP;5262		break;5263	default:5264		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,5265				"0399 Invalid link attention type: x%x\n",5266				bf_get(lpfc_acqe_link_status, acqe_link));5267		att_type = LPFC_ATT_RESERVED;5268		break;5269	}5270	return att_type;5271}5272 5273/**5274 * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed5275 * @phba: pointer to lpfc hba data structure.5276 *5277 * This routine is to get an SLI3 FC port's link speed in Mbps.5278 *5279 * Return: link speed in terms of Mbps.5280 **/5281uint32_t5282lpfc_sli_port_speed_get(struct lpfc_hba *phba)5283{5284	uint32_t link_speed;5285 5286	if (!lpfc_is_link_up(phba))5287		return 0;5288 5289	if (phba->sli_rev <= LPFC_SLI_REV3) {5290		switch (phba->fc_linkspeed) {5291		case LPFC_LINK_SPEED_1GHZ:5292			link_speed = 1000;5293			break;5294		case LPFC_LINK_SPEED_2GHZ:5295			link_speed = 2000;5296			break;5297		case LPFC_LINK_SPEED_4GHZ:5298			link_speed = 4000;5299			break;5300		case LPFC_LINK_SPEED_8GHZ:5301			link_speed = 8000;5302			break;5303		case LPFC_LINK_SPEED_10GHZ:5304			link_speed = 10000;5305			break;5306		case LPFC_LINK_SPEED_16GHZ:5307			link_speed = 16000;5308			break;5309		default:5310			link_speed = 0;5311		}5312	} else {5313		if (phba->sli4_hba.link_state.logical_speed)5314			link_speed =5315			      phba->sli4_hba.link_state.logical_speed;5316		else5317			link_speed = phba->sli4_hba.link_state.speed;5318	}5319	return link_speed;5320}5321 5322/**5323 * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed5324 * @phba: pointer to lpfc hba data structure.5325 * @evt_code: asynchronous event code.5326 * @speed_code: asynchronous event link speed code.5327 *5328 * This routine is to parse the giving SLI4 async event link speed code into5329 * value of Mbps for the link speed.5330 *5331 * Return: link speed in terms of Mbps.5332 **/5333static uint32_t5334lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code,5335			   uint8_t speed_code)5336{5337	uint32_t port_speed;5338 5339	switch (evt_code) {5340	case LPFC_TRAILER_CODE_LINK:5341		switch (speed_code) {5342		case LPFC_ASYNC_LINK_SPEED_ZERO:5343			port_speed = 0;5344			break;5345		case LPFC_ASYNC_LINK_SPEED_10MBPS:5346			port_speed = 10;5347			break;5348		case LPFC_ASYNC_LINK_SPEED_100MBPS:5349			port_speed = 100;5350			break;5351		case LPFC_ASYNC_LINK_SPEED_1GBPS:5352			port_speed = 1000;5353			break;5354		case LPFC_ASYNC_LINK_SPEED_10GBPS:5355			port_speed = 10000;5356			break;5357		case LPFC_ASYNC_LINK_SPEED_20GBPS:5358			port_speed = 20000;5359			break;5360		case LPFC_ASYNC_LINK_SPEED_25GBPS:5361			port_speed = 25000;5362			break;5363		case LPFC_ASYNC_LINK_SPEED_40GBPS:5364			port_speed = 40000;5365			break;5366		case LPFC_ASYNC_LINK_SPEED_100GBPS:5367			port_speed = 100000;5368			break;5369		default:5370			port_speed = 0;5371		}5372		break;5373	case LPFC_TRAILER_CODE_FC:5374		switch (speed_code) {5375		case LPFC_FC_LA_SPEED_UNKNOWN:5376			port_speed = 0;5377			break;5378		case LPFC_FC_LA_SPEED_1G:5379			port_speed = 1000;5380			break;5381		case LPFC_FC_LA_SPEED_2G:5382			port_speed = 2000;5383			break;5384		case LPFC_FC_LA_SPEED_4G:5385			port_speed = 4000;5386			break;5387		case LPFC_FC_LA_SPEED_8G:5388			port_speed = 8000;5389			break;5390		case LPFC_FC_LA_SPEED_10G:5391			port_speed = 10000;5392			break;5393		case LPFC_FC_LA_SPEED_16G:5394			port_speed = 16000;5395			break;5396		case LPFC_FC_LA_SPEED_32G:5397			port_speed = 32000;5398			break;5399		case LPFC_FC_LA_SPEED_64G:5400			port_speed = 64000;5401			break;5402		case LPFC_FC_LA_SPEED_128G:5403			port_speed = 128000;5404			break;5405		case LPFC_FC_LA_SPEED_256G:5406			port_speed = 256000;5407			break;5408		default:5409			port_speed = 0;5410		}5411		break;5412	default:5413		port_speed = 0;5414	}5415	return port_speed;5416}5417 5418/**5419 * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event5420 * @phba: pointer to lpfc hba data structure.5421 * @acqe_link: pointer to the async link completion queue entry.5422 *5423 * This routine is to handle the SLI4 asynchronous FCoE link event.5424 **/5425static void5426lpfc_sli4_async_link_evt(struct lpfc_hba *phba,5427			 struct lpfc_acqe_link *acqe_link)5428{5429	LPFC_MBOXQ_t *pmb;5430	MAILBOX_t *mb;5431	struct lpfc_mbx_read_top *la;5432	uint8_t att_type;5433	int rc;5434 5435	att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);5436	if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)5437		return;5438	phba->fcoe_eventtag = acqe_link->event_tag;5439	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);5440	if (!pmb) {5441		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,5442				"0395 The mboxq allocation failed\n");5443		return;5444	}5445 5446	rc = lpfc_mbox_rsrc_prep(phba, pmb);5447	if (rc) {5448		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,5449				"0396 mailbox allocation failed\n");5450		goto out_free_pmb;5451	}5452 5453	/* Cleanup any outstanding ELS commands */5454	lpfc_els_flush_all_cmd(phba);5455 5456	/* Block ELS IOCBs until we have done process link event */5457	phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;5458 5459	/* Update link event statistics */5460	phba->sli.slistat.link_event++;5461 5462	/* Create lpfc_handle_latt mailbox command from link ACQE */5463	lpfc_read_topology(phba, pmb, pmb->ctx_buf);5464	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;5465	pmb->vport = phba->pport;5466 5467	/* Keep the link status for extra SLI4 state machine reference */5468	phba->sli4_hba.link_state.speed =5469			lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK,5470				bf_get(lpfc_acqe_link_speed, acqe_link));5471	phba->sli4_hba.link_state.duplex =5472				bf_get(lpfc_acqe_link_duplex, acqe_link);5473	phba->sli4_hba.link_state.status =5474				bf_get(lpfc_acqe_link_status, acqe_link);5475	phba->sli4_hba.link_state.type =5476				bf_get(lpfc_acqe_link_type, acqe_link);5477	phba->sli4_hba.link_state.number =5478				bf_get(lpfc_acqe_link_number, acqe_link);5479	phba->sli4_hba.link_state.fault =5480				bf_get(lpfc_acqe_link_fault, acqe_link);5481	phba->sli4_hba.link_state.logical_speed =5482			bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10;5483 5484	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,5485			"2900 Async FC/FCoE Link event - Speed:%dGBit "5486			"duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "5487			"Logical speed:%dMbps Fault:%d\n",5488			phba->sli4_hba.link_state.speed,5489			phba->sli4_hba.link_state.topology,5490			phba->sli4_hba.link_state.status,5491			phba->sli4_hba.link_state.type,5492			phba->sli4_hba.link_state.number,5493			phba->sli4_hba.link_state.logical_speed,5494			phba->sli4_hba.link_state.fault);5495	/*5496	 * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch5497	 * topology info. Note: Optional for non FC-AL ports.5498	 */5499	if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) {5500		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);5501		if (rc == MBX_NOT_FINISHED)5502			goto out_free_pmb;5503		return;5504	}5505	/*5506	 * For FCoE Mode: fill in all the topology information we need and call5507	 * the READ_TOPOLOGY completion routine to continue without actually5508	 * sending the READ_TOPOLOGY mailbox command to the port.5509	 */5510	/* Initialize completion status */5511	mb = &pmb->u.mb;5512	mb->mbxStatus = MBX_SUCCESS;5513 5514	/* Parse port fault information field */5515	lpfc_sli4_parse_latt_fault(phba, acqe_link);5516 5517	/* Parse and translate link attention fields */5518	la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;5519	la->eventTag = acqe_link->event_tag;5520	bf_set(lpfc_mbx_read_top_att_type, la, att_type);5521	bf_set(lpfc_mbx_read_top_link_spd, la,5522	       (bf_get(lpfc_acqe_link_speed, acqe_link)));5523 5524	/* Fake the following irrelevant fields */5525	bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);5526	bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);5527	bf_set(lpfc_mbx_read_top_il, la, 0);5528	bf_set(lpfc_mbx_read_top_pb, la, 0);5529	bf_set(lpfc_mbx_read_top_fa, la, 0);5530	bf_set(lpfc_mbx_read_top_mm, la, 0);5531 5532	/* Invoke the lpfc_handle_latt mailbox command callback function */5533	lpfc_mbx_cmpl_read_topology(phba, pmb);5534 5535	return;5536 5537out_free_pmb:5538	lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);5539}5540 5541/**5542 * lpfc_async_link_speed_to_read_top - Parse async evt link speed code to read5543 * topology.5544 * @phba: pointer to lpfc hba data structure.5545 * @speed_code: asynchronous event link speed code.5546 *5547 * This routine is to parse the giving SLI4 async event link speed code into5548 * value of Read topology link speed.5549 *5550 * Return: link speed in terms of Read topology.5551 **/5552static uint8_t5553lpfc_async_link_speed_to_read_top(struct lpfc_hba *phba, uint8_t speed_code)5554{5555	uint8_t port_speed;5556 5557	switch (speed_code) {5558	case LPFC_FC_LA_SPEED_1G:5559		port_speed = LPFC_LINK_SPEED_1GHZ;5560		break;5561	case LPFC_FC_LA_SPEED_2G:5562		port_speed = LPFC_LINK_SPEED_2GHZ;5563		break;5564	case LPFC_FC_LA_SPEED_4G:5565		port_speed = LPFC_LINK_SPEED_4GHZ;5566		break;5567	case LPFC_FC_LA_SPEED_8G:5568		port_speed = LPFC_LINK_SPEED_8GHZ;5569		break;5570	case LPFC_FC_LA_SPEED_16G:5571		port_speed = LPFC_LINK_SPEED_16GHZ;5572		break;5573	case LPFC_FC_LA_SPEED_32G:5574		port_speed = LPFC_LINK_SPEED_32GHZ;5575		break;5576	case LPFC_FC_LA_SPEED_64G:5577		port_speed = LPFC_LINK_SPEED_64GHZ;5578		break;5579	case LPFC_FC_LA_SPEED_128G:5580		port_speed = LPFC_LINK_SPEED_128GHZ;5581		break;5582	case LPFC_FC_LA_SPEED_256G:5583		port_speed = LPFC_LINK_SPEED_256GHZ;5584		break;5585	default:5586		port_speed = 0;5587		break;5588	}5589 5590	return port_speed;5591}5592 5593void5594lpfc_cgn_dump_rxmonitor(struct lpfc_hba *phba)5595{5596	if (!phba->rx_monitor) {5597		lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,5598				"4411 Rx Monitor Info is empty.\n");5599	} else {5600		lpfc_rx_monitor_report(phba, phba->rx_monitor, NULL, 0,5601				       LPFC_MAX_RXMONITOR_DUMP);5602	}5603}5604 5605/**5606 * lpfc_cgn_update_stat - Save data into congestion stats buffer5607 * @phba: pointer to lpfc hba data structure.5608 * @dtag: FPIN descriptor received5609 *5610 * Increment the FPIN received counter/time when it happens.5611 */5612void5613lpfc_cgn_update_stat(struct lpfc_hba *phba, uint32_t dtag)5614{5615	struct lpfc_cgn_info *cp;5616	u32 value;5617 5618	/* Make sure we have a congestion info buffer */5619	if (!phba->cgn_i)5620		return;5621	cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;5622 5623	/* Update congestion statistics */5624	switch (dtag) {5625	case ELS_DTAG_LNK_INTEGRITY:5626		le32_add_cpu(&cp->link_integ_notification, 1);5627		lpfc_cgn_update_tstamp(phba, &cp->stat_lnk);5628		break;5629	case ELS_DTAG_DELIVERY:5630		le32_add_cpu(&cp->delivery_notification, 1);5631		lpfc_cgn_update_tstamp(phba, &cp->stat_delivery);5632		break;5633	case ELS_DTAG_PEER_CONGEST:5634		le32_add_cpu(&cp->cgn_peer_notification, 1);5635		lpfc_cgn_update_tstamp(phba, &cp->stat_peer);5636		break;5637	case ELS_DTAG_CONGESTION:5638		le32_add_cpu(&cp->cgn_notification, 1);5639		lpfc_cgn_update_tstamp(phba, &cp->stat_fpin);5640	}5641	if (phba->cgn_fpin_frequency &&5642	    phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) {5643		value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency;5644		cp->cgn_stat_npm = value;5645	}5646 5647	value = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,5648				    LPFC_CGN_CRC32_SEED);5649	cp->cgn_info_crc = cpu_to_le32(value);5650}5651 5652/**5653 * lpfc_cgn_update_tstamp - Update cmf timestamp5654 * @phba: pointer to lpfc hba data structure.5655 * @ts: structure to write the timestamp to.5656 */5657void5658lpfc_cgn_update_tstamp(struct lpfc_hba *phba, struct lpfc_cgn_ts *ts)5659{5660	struct timespec64 cur_time;5661	struct tm tm_val;5662 5663	ktime_get_real_ts64(&cur_time);5664	time64_to_tm(cur_time.tv_sec, 0, &tm_val);5665 5666	ts->month = tm_val.tm_mon + 1;5667	ts->day	= tm_val.tm_mday;5668	ts->year = tm_val.tm_year - 100;5669	ts->hour = tm_val.tm_hour;5670	ts->minute = tm_val.tm_min;5671	ts->second = tm_val.tm_sec;5672 5673	lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,5674			"2646 Updated CMF timestamp : "5675			"%u/%u/%u %u:%u:%u\n",5676			ts->day, ts->month,5677			ts->year, ts->hour,5678			ts->minute, ts->second);5679}5680 5681/**5682 * lpfc_cmf_stats_timer - Save data into registered congestion buffer5683 * @timer: Timer cookie to access lpfc private data5684 *5685 * Save the congestion event data every minute.5686 * On the hour collapse all the minute data into hour data. Every day5687 * collapse all the hour data into daily data. Separate driver5688 * and fabrc congestion event counters that will be saved out5689 * to the registered congestion buffer every minute.5690 */5691static enum hrtimer_restart5692lpfc_cmf_stats_timer(struct hrtimer *timer)5693{5694	struct lpfc_hba *phba;5695	struct lpfc_cgn_info *cp;5696	uint32_t i, index;5697	uint16_t value, mvalue;5698	uint64_t bps;5699	uint32_t mbps;5700	uint32_t dvalue, wvalue, lvalue, avalue;5701	uint64_t latsum;5702	__le16 *ptr;5703	__le32 *lptr;5704	__le16 *mptr;5705 5706	phba = container_of(timer, struct lpfc_hba, cmf_stats_timer);5707	/* Make sure we have a congestion info buffer */5708	if (!phba->cgn_i)5709		return HRTIMER_NORESTART;5710	cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;5711 5712	phba->cgn_evt_timestamp = jiffies +5713			msecs_to_jiffies(LPFC_CGN_TIMER_TO_MIN);5714	phba->cgn_evt_minute++;5715 5716	/* We should get to this point in the routine on 1 minute intervals */5717	lpfc_cgn_update_tstamp(phba, &cp->base_time);5718 5719	if (phba->cgn_fpin_frequency &&5720	    phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) {5721		value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency;5722		cp->cgn_stat_npm = value;5723	}5724 5725	/* Read and clear the latency counters for this minute */5726	lvalue = atomic_read(&phba->cgn_latency_evt_cnt);5727	latsum = atomic64_read(&phba->cgn_latency_evt);5728	atomic_set(&phba->cgn_latency_evt_cnt, 0);5729	atomic64_set(&phba->cgn_latency_evt, 0);5730 5731	/* We need to store MB/sec bandwidth in the congestion information.5732	 * block_cnt is count of 512 byte blocks for the entire minute,5733	 * bps will get bytes per sec before finally converting to MB/sec.5734	 */5735	bps = div_u64(phba->rx_block_cnt, LPFC_SEC_MIN) * 512;5736	phba->rx_block_cnt = 0;5737	mvalue = bps / (1024 * 1024); /* convert to MB/sec */5738 5739	/* Every minute */5740	/* cgn parameters */5741	cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;5742	cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;5743	cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;5744	cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;5745 5746	/* Fill in default LUN qdepth */5747	value = (uint16_t)(phba->pport->cfg_lun_queue_depth);5748	cp->cgn_lunq = cpu_to_le16(value);5749 5750	/* Record congestion buffer info - every minute5751	 * cgn_driver_evt_cnt (Driver events)5752	 * cgn_fabric_warn_cnt (Congestion Warnings)5753	 * cgn_latency_evt_cnt / cgn_latency_evt (IO Latency)5754	 * cgn_fabric_alarm_cnt (Congestion Alarms)5755	 */5756	index = ++cp->cgn_index_minute;5757	if (cp->cgn_index_minute == LPFC_MIN_HOUR) {5758		cp->cgn_index_minute = 0;5759		index = 0;5760	}5761 5762	/* Get the number of driver events in this sample and reset counter */5763	dvalue = atomic_read(&phba->cgn_driver_evt_cnt);5764	atomic_set(&phba->cgn_driver_evt_cnt, 0);5765 5766	/* Get the number of warning events - FPIN and Signal for this minute */5767	wvalue = 0;5768	if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) ||5769	    phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||5770	    phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)5771		wvalue = atomic_read(&phba->cgn_fabric_warn_cnt);5772	atomic_set(&phba->cgn_fabric_warn_cnt, 0);5773 5774	/* Get the number of alarm events - FPIN and Signal for this minute */5775	avalue = 0;5776	if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) ||5777	    phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)5778		avalue = atomic_read(&phba->cgn_fabric_alarm_cnt);5779	atomic_set(&phba->cgn_fabric_alarm_cnt, 0);5780 5781	/* Collect the driver, warning, alarm and latency counts for this5782	 * minute into the driver congestion buffer.5783	 */5784	ptr = &cp->cgn_drvr_min[index];5785	value = (uint16_t)dvalue;5786	*ptr = cpu_to_le16(value);5787 5788	ptr = &cp->cgn_warn_min[index];5789	value = (uint16_t)wvalue;5790	*ptr = cpu_to_le16(value);5791 5792	ptr = &cp->cgn_alarm_min[index];5793	value = (uint16_t)avalue;5794	*ptr = cpu_to_le16(value);5795 5796	lptr = &cp->cgn_latency_min[index];5797	if (lvalue) {5798		lvalue = (uint32_t)div_u64(latsum, lvalue);5799		*lptr = cpu_to_le32(lvalue);5800	} else {5801		*lptr = 0;5802	}5803 5804	/* Collect the bandwidth value into the driver's congesion buffer. */5805	mptr = &cp->cgn_bw_min[index];5806	*mptr = cpu_to_le16(mvalue);5807 5808	lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,5809			"2418 Congestion Info - minute (%d): %d %d %d %d %d\n",5810			index, dvalue, wvalue, *lptr, mvalue, avalue);5811 5812	/* Every hour */5813	if ((phba->cgn_evt_minute % LPFC_MIN_HOUR) == 0) {5814		/* Record congestion buffer info - every hour5815		 * Collapse all minutes into an hour5816		 */5817		index = ++cp->cgn_index_hour;5818		if (cp->cgn_index_hour == LPFC_HOUR_DAY) {5819			cp->cgn_index_hour = 0;5820			index = 0;5821		}5822 5823		dvalue = 0;5824		wvalue = 0;5825		lvalue = 0;5826		avalue = 0;5827		mvalue = 0;5828		mbps = 0;5829		for (i = 0; i < LPFC_MIN_HOUR; i++) {5830			dvalue += le16_to_cpu(cp->cgn_drvr_min[i]);5831			wvalue += le16_to_cpu(cp->cgn_warn_min[i]);5832			lvalue += le32_to_cpu(cp->cgn_latency_min[i]);5833			mbps += le16_to_cpu(cp->cgn_bw_min[i]);5834			avalue += le16_to_cpu(cp->cgn_alarm_min[i]);5835		}5836		if (lvalue)		/* Avg of latency averages */5837			lvalue /= LPFC_MIN_HOUR;5838		if (mbps)		/* Avg of Bandwidth averages */5839			mvalue = mbps / LPFC_MIN_HOUR;5840 5841		lptr = &cp->cgn_drvr_hr[index];5842		*lptr = cpu_to_le32(dvalue);5843		lptr = &cp->cgn_warn_hr[index];5844		*lptr = cpu_to_le32(wvalue);5845		lptr = &cp->cgn_latency_hr[index];5846		*lptr = cpu_to_le32(lvalue);5847		mptr = &cp->cgn_bw_hr[index];5848		*mptr = cpu_to_le16(mvalue);5849		lptr = &cp->cgn_alarm_hr[index];5850		*lptr = cpu_to_le32(avalue);5851 5852		lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,5853				"2419 Congestion Info - hour "5854				"(%d): %d %d %d %d %d\n",5855				index, dvalue, wvalue, lvalue, mvalue, avalue);5856	}5857 5858	/* Every day */5859	if ((phba->cgn_evt_minute % LPFC_MIN_DAY) == 0) {5860		/* Record congestion buffer info - every hour5861		 * Collapse all hours into a day. Rotate days5862		 * after LPFC_MAX_CGN_DAYS.5863		 */5864		index = ++cp->cgn_index_day;5865		if (cp->cgn_index_day == LPFC_MAX_CGN_DAYS) {5866			cp->cgn_index_day = 0;5867			index = 0;5868		}5869 5870		dvalue = 0;5871		wvalue = 0;5872		lvalue = 0;5873		mvalue = 0;5874		mbps = 0;5875		avalue = 0;5876		for (i = 0; i < LPFC_HOUR_DAY; i++) {5877			dvalue += le32_to_cpu(cp->cgn_drvr_hr[i]);5878			wvalue += le32_to_cpu(cp->cgn_warn_hr[i]);5879			lvalue += le32_to_cpu(cp->cgn_latency_hr[i]);5880			mbps += le16_to_cpu(cp->cgn_bw_hr[i]);5881			avalue += le32_to_cpu(cp->cgn_alarm_hr[i]);5882		}5883		if (lvalue)		/* Avg of latency averages */5884			lvalue /= LPFC_HOUR_DAY;5885		if (mbps)		/* Avg of Bandwidth averages */5886			mvalue = mbps / LPFC_HOUR_DAY;5887 5888		lptr = &cp->cgn_drvr_day[index];5889		*lptr = cpu_to_le32(dvalue);5890		lptr = &cp->cgn_warn_day[index];5891		*lptr = cpu_to_le32(wvalue);5892		lptr = &cp->cgn_latency_day[index];5893		*lptr = cpu_to_le32(lvalue);5894		mptr = &cp->cgn_bw_day[index];5895		*mptr = cpu_to_le16(mvalue);5896		lptr = &cp->cgn_alarm_day[index];5897		*lptr = cpu_to_le32(avalue);5898 5899		lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,5900				"2420 Congestion Info - daily (%d): "5901				"%d %d %d %d %d\n",5902				index, dvalue, wvalue, lvalue, mvalue, avalue);5903	}5904 5905	/* Use the frequency found in the last rcv'ed FPIN */5906	value = phba->cgn_fpin_frequency;5907	cp->cgn_warn_freq = cpu_to_le16(value);5908	cp->cgn_alarm_freq = cpu_to_le16(value);5909 5910	lvalue = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,5911				     LPFC_CGN_CRC32_SEED);5912	cp->cgn_info_crc = cpu_to_le32(lvalue);5913 5914	hrtimer_forward_now(timer, ktime_set(0, LPFC_SEC_MIN * NSEC_PER_SEC));5915 5916	return HRTIMER_RESTART;5917}5918 5919/**5920 * lpfc_calc_cmf_latency - latency from start of rxate timer interval5921 * @phba: The Hba for which this call is being executed.5922 *5923 * The routine calculates the latency from the beginning of the CMF timer5924 * interval to the current point in time. It is called from IO completion5925 * when we exceed our Bandwidth limitation for the time interval.5926 */5927uint32_t5928lpfc_calc_cmf_latency(struct lpfc_hba *phba)5929{5930	struct timespec64 cmpl_time;5931	uint32_t msec = 0;5932 5933	ktime_get_real_ts64(&cmpl_time);5934 5935	/* This routine works on a ms granularity so sec and usec are5936	 * converted accordingly.5937	 */5938	if (cmpl_time.tv_sec == phba->cmf_latency.tv_sec) {5939		msec = (cmpl_time.tv_nsec - phba->cmf_latency.tv_nsec) /5940			NSEC_PER_MSEC;5941	} else {5942		if (cmpl_time.tv_nsec >= phba->cmf_latency.tv_nsec) {5943			msec = (cmpl_time.tv_sec -5944				phba->cmf_latency.tv_sec) * MSEC_PER_SEC;5945			msec += ((cmpl_time.tv_nsec -5946				  phba->cmf_latency.tv_nsec) / NSEC_PER_MSEC);5947		} else {5948			msec = (cmpl_time.tv_sec - phba->cmf_latency.tv_sec -5949				1) * MSEC_PER_SEC;5950			msec += (((NSEC_PER_SEC - phba->cmf_latency.tv_nsec) +5951				 cmpl_time.tv_nsec) / NSEC_PER_MSEC);5952		}5953	}5954	return msec;5955}5956 5957/**5958 * lpfc_cmf_timer -  This is the timer function for one congestion5959 * rate interval.5960 * @timer: Pointer to the high resolution timer that expired5961 */5962static enum hrtimer_restart5963lpfc_cmf_timer(struct hrtimer *timer)5964{5965	struct lpfc_hba *phba = container_of(timer, struct lpfc_hba,5966					     cmf_timer);5967	struct rx_info_entry entry;5968	uint32_t io_cnt;5969	uint32_t busy, max_read;5970	uint64_t total, rcv, lat, mbpi, extra, cnt;5971	int timer_interval = LPFC_CMF_INTERVAL;5972	uint32_t ms;5973	struct lpfc_cgn_stat *cgs;5974	int cpu;5975 5976	/* Only restart the timer if congestion mgmt is on */5977	if (phba->cmf_active_mode == LPFC_CFG_OFF ||5978	    !phba->cmf_latency.tv_sec) {5979		lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,5980				"6224 CMF timer exit: %d %lld\n",5981				phba->cmf_active_mode,5982				(uint64_t)phba->cmf_latency.tv_sec);5983		return HRTIMER_NORESTART;5984	}5985 5986	/* If pport is not ready yet, just exit and wait for5987	 * the next timer cycle to hit.5988	 */5989	if (!phba->pport)5990		goto skip;5991 5992	/* Do not block SCSI IO while in the timer routine since5993	 * total_bytes will be cleared5994	 */5995	atomic_set(&phba->cmf_stop_io, 1);5996 5997	/* First we need to calculate the actual ms between5998	 * the last timer interrupt and this one. We ask for5999	 * LPFC_CMF_INTERVAL, however the actual time may6000	 * vary depending on system overhead.6001	 */6002	ms = lpfc_calc_cmf_latency(phba);6003 6004 6005	/* Immediately after we calculate the time since the last6006	 * timer interrupt, set the start time for the next6007	 * interrupt6008	 */6009	ktime_get_real_ts64(&phba->cmf_latency);6010 6011	phba->cmf_link_byte_count =6012		div_u64(phba->cmf_max_line_rate * LPFC_CMF_INTERVAL, 1000);6013 6014	/* Collect all the stats from the prior timer interval */6015	total = 0;6016	io_cnt = 0;6017	lat = 0;6018	rcv = 0;6019	for_each_present_cpu(cpu) {6020		cgs = per_cpu_ptr(phba->cmf_stat, cpu);6021		total += atomic64_xchg(&cgs->total_bytes, 0);6022		io_cnt += atomic_xchg(&cgs->rx_io_cnt, 0);6023		lat += atomic64_xchg(&cgs->rx_latency, 0);6024		rcv += atomic64_xchg(&cgs->rcv_bytes, 0);6025	}6026 6027	/* Before we issue another CMF_SYNC_WQE, retrieve the BW6028	 * returned from the last CMF_SYNC_WQE issued, from6029	 * cmf_last_sync_bw. This will be the target BW for6030	 * this next timer interval.6031	 */6032	if (phba->cmf_active_mode == LPFC_CFG_MANAGED &&6033	    phba->link_state != LPFC_LINK_DOWN &&6034	    test_bit(HBA_SETUP, &phba->hba_flag)) {6035		mbpi = phba->cmf_last_sync_bw;6036		phba->cmf_last_sync_bw = 0;6037		extra = 0;6038 6039		/* Calculate any extra bytes needed to account for the6040		 * timer accuracy. If we are less than LPFC_CMF_INTERVAL6041		 * calculate the adjustment needed for total to reflect6042		 * a full LPFC_CMF_INTERVAL.6043		 */6044		if (ms && ms < LPFC_CMF_INTERVAL) {6045			cnt = div_u64(total, ms); /* bytes per ms */6046			cnt *= LPFC_CMF_INTERVAL; /* what total should be */6047			extra = cnt - total;6048		}6049		lpfc_issue_cmf_sync_wqe(phba, LPFC_CMF_INTERVAL, total + extra);6050	} else {6051		/* For Monitor mode or link down we want mbpi6052		 * to be the full link speed6053		 */6054		mbpi = phba->cmf_link_byte_count;6055		extra = 0;6056	}6057	phba->cmf_timer_cnt++;6058 6059	if (io_cnt) {6060		/* Update congestion info buffer latency in us */6061		atomic_add(io_cnt, &phba->cgn_latency_evt_cnt);6062		atomic64_add(lat, &phba->cgn_latency_evt);6063	}6064	busy = atomic_xchg(&phba->cmf_busy, 0);6065	max_read = atomic_xchg(&phba->rx_max_read_cnt, 0);6066 6067	/* Calculate MBPI for the next timer interval */6068	if (mbpi) {6069		if (mbpi > phba->cmf_link_byte_count ||6070		    phba->cmf_active_mode == LPFC_CFG_MONITOR)6071			mbpi = phba->cmf_link_byte_count;6072 6073		/* Change max_bytes_per_interval to what the prior6074		 * CMF_SYNC_WQE cmpl indicated.6075		 */6076		if (mbpi != phba->cmf_max_bytes_per_interval)6077			phba->cmf_max_bytes_per_interval = mbpi;6078	}6079 6080	/* Save rxmonitor information for debug */6081	if (phba->rx_monitor) {6082		entry.total_bytes = total;6083		entry.cmf_bytes = total + extra;6084		entry.rcv_bytes = rcv;6085		entry.cmf_busy = busy;6086		entry.cmf_info = phba->cmf_active_info;6087		if (io_cnt) {6088			entry.avg_io_latency = div_u64(lat, io_cnt);6089			entry.avg_io_size = div_u64(rcv, io_cnt);6090		} else {6091			entry.avg_io_latency = 0;6092			entry.avg_io_size = 0;6093		}6094		entry.max_read_cnt = max_read;6095		entry.io_cnt = io_cnt;6096		entry.max_bytes_per_interval = mbpi;6097		if (phba->cmf_active_mode == LPFC_CFG_MANAGED)6098			entry.timer_utilization = phba->cmf_last_ts;6099		else6100			entry.timer_utilization = ms;6101		entry.timer_interval = ms;6102		phba->cmf_last_ts = 0;6103 6104		lpfc_rx_monitor_record(phba->rx_monitor, &entry);6105	}6106 6107	if (phba->cmf_active_mode == LPFC_CFG_MONITOR) {6108		/* If Monitor mode, check if we are oversubscribed6109		 * against the full line rate.6110		 */6111		if (mbpi && total > mbpi)6112			atomic_inc(&phba->cgn_driver_evt_cnt);6113	}6114	phba->rx_block_cnt += div_u64(rcv, 512);  /* save 512 byte block cnt */6115 6116	/* Since total_bytes has already been zero'ed, its okay to unblock6117	 * after max_bytes_per_interval is setup.6118	 */6119	if (atomic_xchg(&phba->cmf_bw_wait, 0))6120		queue_work(phba->wq, &phba->unblock_request_work);6121 6122	/* SCSI IO is now unblocked */6123	atomic_set(&phba->cmf_stop_io, 0);6124 6125skip:6126	hrtimer_forward_now(timer,6127			    ktime_set(0, timer_interval * NSEC_PER_MSEC));6128	return HRTIMER_RESTART;6129}6130 6131#define trunk_link_status(__idx)\6132	bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\6133	       ((phba->trunk_link.link##__idx.state == LPFC_LINK_UP) ?\6134		"Link up" : "Link down") : "NA"6135/* Did port __idx reported an error */6136#define trunk_port_fault(__idx)\6137	bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\6138	       (port_fault & (1 << __idx) ? "YES" : "NO") : "NA"6139 6140static void6141lpfc_update_trunk_link_status(struct lpfc_hba *phba,6142			      struct lpfc_acqe_fc_la *acqe_fc)6143{6144	uint8_t port_fault = bf_get(lpfc_acqe_fc_la_trunk_linkmask, acqe_fc);6145	uint8_t err = bf_get(lpfc_acqe_fc_la_trunk_fault, acqe_fc);6146	u8 cnt = 0;6147 6148	phba->sli4_hba.link_state.speed =6149		lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,6150				bf_get(lpfc_acqe_fc_la_speed, acqe_fc));6151 6152	phba->sli4_hba.link_state.logical_speed =6153				bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;6154	/* We got FC link speed, convert to fc_linkspeed (READ_TOPOLOGY) */6155	phba->fc_linkspeed =6156		 lpfc_async_link_speed_to_read_top(6157				phba,6158				bf_get(lpfc_acqe_fc_la_speed, acqe_fc));6159 6160	if (bf_get(lpfc_acqe_fc_la_trunk_config_port0, acqe_fc)) {6161		phba->trunk_link.link0.state =6162			bf_get(lpfc_acqe_fc_la_trunk_link_status_port0, acqe_fc)6163			? LPFC_LINK_UP : LPFC_LINK_DOWN;6164		phba->trunk_link.link0.fault = port_fault & 0x1 ? err : 0;6165		cnt++;6166	}6167	if (bf_get(lpfc_acqe_fc_la_trunk_config_port1, acqe_fc)) {6168		phba->trunk_link.link1.state =6169			bf_get(lpfc_acqe_fc_la_trunk_link_status_port1, acqe_fc)6170			? LPFC_LINK_UP : LPFC_LINK_DOWN;6171		phba->trunk_link.link1.fault = port_fault & 0x2 ? err : 0;6172		cnt++;6173	}6174	if (bf_get(lpfc_acqe_fc_la_trunk_config_port2, acqe_fc)) {6175		phba->trunk_link.link2.state =6176			bf_get(lpfc_acqe_fc_la_trunk_link_status_port2, acqe_fc)6177			? LPFC_LINK_UP : LPFC_LINK_DOWN;6178		phba->trunk_link.link2.fault = port_fault & 0x4 ? err : 0;6179		cnt++;6180	}6181	if (bf_get(lpfc_acqe_fc_la_trunk_config_port3, acqe_fc)) {6182		phba->trunk_link.link3.state =6183			bf_get(lpfc_acqe_fc_la_trunk_link_status_port3, acqe_fc)6184			? LPFC_LINK_UP : LPFC_LINK_DOWN;6185		phba->trunk_link.link3.fault = port_fault & 0x8 ? err : 0;6186		cnt++;6187	}6188 6189	if (cnt)6190		phba->trunk_link.phy_lnk_speed =6191			phba->sli4_hba.link_state.logical_speed / (cnt * 1000);6192	else6193		phba->trunk_link.phy_lnk_speed = LPFC_LINK_SPEED_UNKNOWN;6194 6195	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6196			"2910 Async FC Trunking Event - Speed:%d\n"6197			"\tLogical speed:%d "6198			"port0: %s port1: %s port2: %s port3: %s\n",6199			phba->sli4_hba.link_state.speed,6200			phba->sli4_hba.link_state.logical_speed,6201			trunk_link_status(0), trunk_link_status(1),6202			trunk_link_status(2), trunk_link_status(3));6203 6204	if (phba->cmf_active_mode != LPFC_CFG_OFF)6205		lpfc_cmf_signal_init(phba);6206 6207	if (port_fault)6208		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6209				"3202 trunk error:0x%x (%s) seen on port0:%s "6210				/*6211				 * SLI-4: We have only 0xA error codes6212				 * defined as of now. print an appropriate6213				 * message in case driver needs to be updated.6214				 */6215				"port1:%s port2:%s port3:%s\n", err, err > 0xA ?6216				"UNDEFINED. update driver." : trunk_errmsg[err],6217				trunk_port_fault(0), trunk_port_fault(1),6218				trunk_port_fault(2), trunk_port_fault(3));6219}6220 6221 6222/**6223 * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event6224 * @phba: pointer to lpfc hba data structure.6225 * @acqe_fc: pointer to the async fc completion queue entry.6226 *6227 * This routine is to handle the SLI4 asynchronous FC event. It will simply log6228 * that the event was received and then issue a read_topology mailbox command so6229 * that the rest of the driver will treat it the same as SLI3.6230 **/6231static void6232lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)6233{6234	LPFC_MBOXQ_t *pmb;6235	MAILBOX_t *mb;6236	struct lpfc_mbx_read_top *la;6237	char *log_level;6238	int rc;6239 6240	if (bf_get(lpfc_trailer_type, acqe_fc) !=6241	    LPFC_FC_LA_EVENT_TYPE_FC_LINK) {6242		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6243				"2895 Non FC link Event detected.(%d)\n",6244				bf_get(lpfc_trailer_type, acqe_fc));6245		return;6246	}6247 6248	if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==6249	    LPFC_FC_LA_TYPE_TRUNKING_EVENT) {6250		lpfc_update_trunk_link_status(phba, acqe_fc);6251		return;6252	}6253 6254	/* Keep the link status for extra SLI4 state machine reference */6255	phba->sli4_hba.link_state.speed =6256			lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,6257				bf_get(lpfc_acqe_fc_la_speed, acqe_fc));6258	phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;6259	phba->sli4_hba.link_state.topology =6260				bf_get(lpfc_acqe_fc_la_topology, acqe_fc);6261	phba->sli4_hba.link_state.status =6262				bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);6263	phba->sli4_hba.link_state.type =6264				bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);6265	phba->sli4_hba.link_state.number =6266				bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);6267	phba->sli4_hba.link_state.fault =6268				bf_get(lpfc_acqe_link_fault, acqe_fc);6269	phba->sli4_hba.link_state.link_status =6270				bf_get(lpfc_acqe_fc_la_link_status, acqe_fc);6271 6272	/*6273	 * Only select attention types need logical speed modification to what6274	 * was previously set.6275	 */6276	if (phba->sli4_hba.link_state.status >= LPFC_FC_LA_TYPE_LINK_UP &&6277	    phba->sli4_hba.link_state.status < LPFC_FC_LA_TYPE_ACTIVATE_FAIL) {6278		if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==6279		    LPFC_FC_LA_TYPE_LINK_DOWN)6280			phba->sli4_hba.link_state.logical_speed = 0;6281		else if (!phba->sli4_hba.conf_trunk)6282			phba->sli4_hba.link_state.logical_speed =6283				bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;6284	}6285 6286	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,6287			"2896 Async FC event - Speed:%dGBaud Topology:x%x "6288			"LA Type:x%x Port Type:%d Port Number:%d Logical speed:"6289			"%dMbps Fault:x%x Link Status:x%x\n",6290			phba->sli4_hba.link_state.speed,6291			phba->sli4_hba.link_state.topology,6292			phba->sli4_hba.link_state.status,6293			phba->sli4_hba.link_state.type,6294			phba->sli4_hba.link_state.number,6295			phba->sli4_hba.link_state.logical_speed,6296			phba->sli4_hba.link_state.fault,6297			phba->sli4_hba.link_state.link_status);6298 6299	/*6300	 * The following attention types are informational only, providing6301	 * further details about link status.  Overwrite the value of6302	 * link_state.status appropriately.  No further action is required.6303	 */6304	if (phba->sli4_hba.link_state.status >= LPFC_FC_LA_TYPE_ACTIVATE_FAIL) {6305		switch (phba->sli4_hba.link_state.status) {6306		case LPFC_FC_LA_TYPE_ACTIVATE_FAIL:6307			log_level = KERN_WARNING;6308			phba->sli4_hba.link_state.status =6309					LPFC_FC_LA_TYPE_LINK_DOWN;6310			break;6311		case LPFC_FC_LA_TYPE_LINK_RESET_PRTCL_EVT:6312			/*6313			 * During bb credit recovery establishment, receiving6314			 * this attention type is normal.  Link Up attention6315			 * type is expected to occur before this informational6316			 * attention type so keep the Link Up status.6317			 */6318			log_level = KERN_INFO;6319			phba->sli4_hba.link_state.status =6320					LPFC_FC_LA_TYPE_LINK_UP;6321			break;6322		default:6323			log_level = KERN_INFO;6324			break;6325		}6326		lpfc_log_msg(phba, log_level, LOG_SLI,6327			     "2992 Async FC event - Informational Link "6328			     "Attention Type x%x\n",6329			     bf_get(lpfc_acqe_fc_la_att_type, acqe_fc));6330		return;6331	}6332 6333	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);6334	if (!pmb) {6335		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6336				"2897 The mboxq allocation failed\n");6337		return;6338	}6339	rc = lpfc_mbox_rsrc_prep(phba, pmb);6340	if (rc) {6341		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6342				"2898 The mboxq prep failed\n");6343		goto out_free_pmb;6344	}6345 6346	/* Cleanup any outstanding ELS commands */6347	lpfc_els_flush_all_cmd(phba);6348 6349	/* Block ELS IOCBs until we have done process link event */6350	phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;6351 6352	/* Update link event statistics */6353	phba->sli.slistat.link_event++;6354 6355	/* Create lpfc_handle_latt mailbox command from link ACQE */6356	lpfc_read_topology(phba, pmb, pmb->ctx_buf);6357	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;6358	pmb->vport = phba->pport;6359 6360	if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {6361		phba->link_flag &= ~(LS_MDS_LINK_DOWN | LS_MDS_LOOPBACK);6362 6363		switch (phba->sli4_hba.link_state.status) {6364		case LPFC_FC_LA_TYPE_MDS_LINK_DOWN:6365			phba->link_flag |= LS_MDS_LINK_DOWN;6366			break;6367		case LPFC_FC_LA_TYPE_MDS_LOOPBACK:6368			phba->link_flag |= LS_MDS_LOOPBACK;6369			break;6370		default:6371			break;6372		}6373 6374		/* Initialize completion status */6375		mb = &pmb->u.mb;6376		mb->mbxStatus = MBX_SUCCESS;6377 6378		/* Parse port fault information field */6379		lpfc_sli4_parse_latt_fault(phba, (void *)acqe_fc);6380 6381		/* Parse and translate link attention fields */6382		la = (struct lpfc_mbx_read_top *)&pmb->u.mb.un.varReadTop;6383		la->eventTag = acqe_fc->event_tag;6384 6385		if (phba->sli4_hba.link_state.status ==6386		    LPFC_FC_LA_TYPE_UNEXP_WWPN) {6387			bf_set(lpfc_mbx_read_top_att_type, la,6388			       LPFC_FC_LA_TYPE_UNEXP_WWPN);6389		} else {6390			bf_set(lpfc_mbx_read_top_att_type, la,6391			       LPFC_FC_LA_TYPE_LINK_DOWN);6392		}6393		/* Invoke the mailbox command callback function */6394		lpfc_mbx_cmpl_read_topology(phba, pmb);6395 6396		return;6397	}6398 6399	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);6400	if (rc == MBX_NOT_FINISHED)6401		goto out_free_pmb;6402	return;6403 6404out_free_pmb:6405	lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);6406}6407 6408/**6409 * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event6410 * @phba: pointer to lpfc hba data structure.6411 * @acqe_sli: pointer to the async SLI completion queue entry.6412 *6413 * This routine is to handle the SLI4 asynchronous SLI events.6414 **/6415static void6416lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)6417{6418	char port_name;6419	char message[128];6420	uint8_t status;6421	uint8_t evt_type;6422	uint8_t operational = 0;6423	struct temp_event temp_event_data;6424	struct lpfc_acqe_misconfigured_event *misconfigured;6425	struct lpfc_acqe_cgn_signal *cgn_signal;6426	struct Scsi_Host  *shost;6427	struct lpfc_vport **vports;6428	int rc, i, cnt;6429 6430	evt_type = bf_get(lpfc_trailer_type, acqe_sli);6431 6432	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,6433			"2901 Async SLI event - Type:%d, Event Data: x%08x "6434			"x%08x x%08x x%08x\n", evt_type,6435			acqe_sli->event_data1, acqe_sli->event_data2,6436			acqe_sli->event_data3, acqe_sli->trailer);6437 6438	port_name = phba->Port[0];6439	if (port_name == 0x00)6440		port_name = '?'; /* get port name is empty */6441 6442	switch (evt_type) {6443	case LPFC_SLI_EVENT_TYPE_OVER_TEMP:6444		temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;6445		temp_event_data.event_code = LPFC_THRESHOLD_TEMP;6446		temp_event_data.data = (uint32_t)acqe_sli->event_data1;6447 6448		lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,6449				"3190 Over Temperature:%d Celsius- Port Name %c\n",6450				acqe_sli->event_data1, port_name);6451 6452		phba->sfp_warning |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;6453		shost = lpfc_shost_from_vport(phba->pport);6454		fc_host_post_vendor_event(shost, fc_get_event_number(),6455					  sizeof(temp_event_data),6456					  (char *)&temp_event_data,6457					  SCSI_NL_VID_TYPE_PCI6458					  | PCI_VENDOR_ID_EMULEX);6459		break;6460	case LPFC_SLI_EVENT_TYPE_NORM_TEMP:6461		temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;6462		temp_event_data.event_code = LPFC_NORMAL_TEMP;6463		temp_event_data.data = (uint32_t)acqe_sli->event_data1;6464 6465		lpfc_printf_log(phba, KERN_INFO, LOG_SLI | LOG_LDS_EVENT,6466				"3191 Normal Temperature:%d Celsius - Port Name %c\n",6467				acqe_sli->event_data1, port_name);6468 6469		shost = lpfc_shost_from_vport(phba->pport);6470		fc_host_post_vendor_event(shost, fc_get_event_number(),6471					  sizeof(temp_event_data),6472					  (char *)&temp_event_data,6473					  SCSI_NL_VID_TYPE_PCI6474					  | PCI_VENDOR_ID_EMULEX);6475		break;6476	case LPFC_SLI_EVENT_TYPE_MISCONFIGURED:6477		misconfigured = (struct lpfc_acqe_misconfigured_event *)6478					&acqe_sli->event_data1;6479 6480		/* fetch the status for this port */6481		switch (phba->sli4_hba.lnk_info.lnk_no) {6482		case LPFC_LINK_NUMBER_0:6483			status = bf_get(lpfc_sli_misconfigured_port0_state,6484					&misconfigured->theEvent);6485			operational = bf_get(lpfc_sli_misconfigured_port0_op,6486					&misconfigured->theEvent);6487			break;6488		case LPFC_LINK_NUMBER_1:6489			status = bf_get(lpfc_sli_misconfigured_port1_state,6490					&misconfigured->theEvent);6491			operational = bf_get(lpfc_sli_misconfigured_port1_op,6492					&misconfigured->theEvent);6493			break;6494		case LPFC_LINK_NUMBER_2:6495			status = bf_get(lpfc_sli_misconfigured_port2_state,6496					&misconfigured->theEvent);6497			operational = bf_get(lpfc_sli_misconfigured_port2_op,6498					&misconfigured->theEvent);6499			break;6500		case LPFC_LINK_NUMBER_3:6501			status = bf_get(lpfc_sli_misconfigured_port3_state,6502					&misconfigured->theEvent);6503			operational = bf_get(lpfc_sli_misconfigured_port3_op,6504					&misconfigured->theEvent);6505			break;6506		default:6507			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6508					"3296 "6509					"LPFC_SLI_EVENT_TYPE_MISCONFIGURED "6510					"event: Invalid link %d",6511					phba->sli4_hba.lnk_info.lnk_no);6512			return;6513		}6514 6515		/* Skip if optic state unchanged */6516		if (phba->sli4_hba.lnk_info.optic_state == status)6517			return;6518 6519		switch (status) {6520		case LPFC_SLI_EVENT_STATUS_VALID:6521			sprintf(message, "Physical Link is functional");6522			break;6523		case LPFC_SLI_EVENT_STATUS_NOT_PRESENT:6524			sprintf(message, "Optics faulted/incorrectly "6525				"installed/not installed - Reseat optics, "6526				"if issue not resolved, replace.");6527			break;6528		case LPFC_SLI_EVENT_STATUS_WRONG_TYPE:6529			sprintf(message,6530				"Optics of two types installed - Remove one "6531				"optic or install matching pair of optics.");6532			break;6533		case LPFC_SLI_EVENT_STATUS_UNSUPPORTED:6534			sprintf(message, "Incompatible optics - Replace with "6535				"compatible optics for card to function.");6536			break;6537		case LPFC_SLI_EVENT_STATUS_UNQUALIFIED:6538			sprintf(message, "Unqualified optics - Replace with "6539				"Avago optics for Warranty and Technical "6540				"Support - Link is%s operational",6541				(operational) ? " not" : "");6542			break;6543		case LPFC_SLI_EVENT_STATUS_UNCERTIFIED:6544			sprintf(message, "Uncertified optics - Replace with "6545				"Avago-certified optics to enable link "6546				"operation - Link is%s operational",6547				(operational) ? " not" : "");6548			break;6549		default:6550			/* firmware is reporting a status we don't know about */6551			sprintf(message, "Unknown event status x%02x", status);6552			break;6553		}6554 6555		/* Issue READ_CONFIG mbox command to refresh supported speeds */6556		rc = lpfc_sli4_read_config(phba);6557		if (rc) {6558			phba->lmt = 0;6559			lpfc_printf_log(phba, KERN_ERR,6560					LOG_TRACE_EVENT,6561					"3194 Unable to retrieve supported "6562					"speeds, rc = 0x%x\n", rc);6563		}6564		rc = lpfc_sli4_refresh_params(phba);6565		if (rc) {6566			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,6567					"3174 Unable to update pls support, "6568					"rc x%x\n", rc);6569		}6570		vports = lpfc_create_vport_work_array(phba);6571		if (vports != NULL) {6572			for (i = 0; i <= phba->max_vports && vports[i] != NULL;6573					i++) {6574				shost = lpfc_shost_from_vport(vports[i]);6575				lpfc_host_supported_speeds_set(shost);6576			}6577		}6578		lpfc_destroy_vport_work_array(phba, vports);6579 6580		phba->sli4_hba.lnk_info.optic_state = status;6581		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,6582				"3176 Port Name %c %s\n", port_name, message);6583		break;6584	case LPFC_SLI_EVENT_TYPE_REMOTE_DPORT:6585		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,6586				"3192 Remote DPort Test Initiated - "6587				"Event Data1:x%08x Event Data2: x%08x\n",6588				acqe_sli->event_data1, acqe_sli->event_data2);6589		break;6590	case LPFC_SLI_EVENT_TYPE_PORT_PARAMS_CHG:6591		/* Call FW to obtain active parms */6592		lpfc_sli4_cgn_parm_chg_evt(phba);6593		break;6594	case LPFC_SLI_EVENT_TYPE_MISCONF_FAWWN:6595		/* Misconfigured WWN. Reports that the SLI Port is configured6596		 * to use FA-WWN, but the attached device doesn’t support it.6597		 * Event Data1 - N.A, Event Data2 - N.A6598		 * This event only happens on the physical port.6599		 */6600		lpfc_log_msg(phba, KERN_WARNING, LOG_SLI | LOG_DISCOVERY,6601			     "2699 Misconfigured FA-PWWN - Attached device "6602			     "does not support FA-PWWN\n");6603		phba->sli4_hba.fawwpn_flag &= ~LPFC_FAWWPN_FABRIC;6604		memset(phba->pport->fc_portname.u.wwn, 0,6605		       sizeof(struct lpfc_name));6606		break;6607	case LPFC_SLI_EVENT_TYPE_EEPROM_FAILURE:6608		/* EEPROM failure. No driver action is required */6609		lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,6610			     "2518 EEPROM failure - "6611			     "Event Data1: x%08x Event Data2: x%08x\n",6612			     acqe_sli->event_data1, acqe_sli->event_data2);6613		break;6614	case LPFC_SLI_EVENT_TYPE_CGN_SIGNAL:6615		if (phba->cmf_active_mode == LPFC_CFG_OFF)6616			break;6617		cgn_signal = (struct lpfc_acqe_cgn_signal *)6618					&acqe_sli->event_data1;6619		phba->cgn_acqe_cnt++;6620 6621		cnt = bf_get(lpfc_warn_acqe, cgn_signal);6622		atomic64_add(cnt, &phba->cgn_acqe_stat.warn);6623		atomic64_add(cgn_signal->alarm_cnt, &phba->cgn_acqe_stat.alarm);6624 6625		/* no threshold for CMF, even 1 signal will trigger an event */6626 6627		/* Alarm overrides warning, so check that first */6628		if (cgn_signal->alarm_cnt) {6629			if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {6630				/* Keep track of alarm cnt for CMF_SYNC_WQE */6631				atomic_add(cgn_signal->alarm_cnt,6632					   &phba->cgn_sync_alarm_cnt);6633			}6634		} else if (cnt) {6635			/* signal action needs to be taken */6636			if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||6637			    phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {6638				/* Keep track of warning cnt for CMF_SYNC_WQE */6639				atomic_add(cnt, &phba->cgn_sync_warn_cnt);6640			}6641		}6642		break;6643	case LPFC_SLI_EVENT_TYPE_RD_SIGNAL:6644		/* May be accompanied by a temperature event */6645		lpfc_printf_log(phba, KERN_INFO,6646				LOG_SLI | LOG_LINK_EVENT | LOG_LDS_EVENT,6647				"2902 Remote Degrade Signaling: x%08x x%08x "6648				"x%08x\n",6649				acqe_sli->event_data1, acqe_sli->event_data2,6650				acqe_sli->event_data3);6651		break;6652	case LPFC_SLI_EVENT_TYPE_RESET_CM_STATS:6653		lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,6654				"2905 Reset CM statistics\n");6655		lpfc_sli4_async_cmstat_evt(phba);6656		break;6657	default:6658		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,6659				"3193 Unrecognized SLI event, type: 0x%x",6660				evt_type);6661		break;6662	}6663}6664 6665/**6666 * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport6667 * @vport: pointer to vport data structure.6668 *6669 * This routine is to perform Clear Virtual Link (CVL) on a vport in6670 * response to a CVL event.6671 *6672 * Return the pointer to the ndlp with the vport if successful, otherwise6673 * return NULL.6674 **/6675static struct lpfc_nodelist *6676lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)6677{6678	struct lpfc_nodelist *ndlp;6679	struct Scsi_Host *shost;6680	struct lpfc_hba *phba;6681 6682	if (!vport)6683		return NULL;6684	phba = vport->phba;6685	if (!phba)6686		return NULL;6687	ndlp = lpfc_findnode_did(vport, Fabric_DID);6688	if (!ndlp) {6689		/* Cannot find existing Fabric ndlp, so allocate a new one */6690		ndlp = lpfc_nlp_init(vport, Fabric_DID);6691		if (!ndlp)6692			return NULL;6693		/* Set the node type */6694		ndlp->nlp_type |= NLP_FABRIC;6695		/* Put ndlp onto node list */6696		lpfc_enqueue_node(vport, ndlp);6697	}6698	if ((phba->pport->port_state < LPFC_FLOGI) &&6699		(phba->pport->port_state != LPFC_VPORT_FAILED))6700		return NULL;6701	/* If virtual link is not yet instantiated ignore CVL */6702	if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)6703		&& (vport->port_state != LPFC_VPORT_FAILED))6704		return NULL;6705	shost = lpfc_shost_from_vport(vport);6706	if (!shost)6707		return NULL;6708	lpfc_linkdown_port(vport);6709	lpfc_cleanup_pending_mbox(vport);6710	set_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag);6711 6712	return ndlp;6713}6714 6715/**6716 * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports6717 * @phba: pointer to lpfc hba data structure.6718 *6719 * This routine is to perform Clear Virtual Link (CVL) on all vports in6720 * response to a FCF dead event.6721 **/6722static void6723lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)6724{6725	struct lpfc_vport **vports;6726	int i;6727 6728	vports = lpfc_create_vport_work_array(phba);6729	if (vports)6730		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)6731			lpfc_sli4_perform_vport_cvl(vports[i]);6732	lpfc_destroy_vport_work_array(phba, vports);6733}6734 6735/**6736 * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event6737 * @phba: pointer to lpfc hba data structure.6738 * @acqe_fip: pointer to the async fcoe completion queue entry.6739 *6740 * This routine is to handle the SLI4 asynchronous fcoe event.6741 **/6742static void6743lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,6744			struct lpfc_acqe_fip *acqe_fip)6745{6746	uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);6747	int rc;6748	struct lpfc_vport *vport;6749	struct lpfc_nodelist *ndlp;6750	int active_vlink_present;6751	struct lpfc_vport **vports;6752	int i;6753 6754	phba->fc_eventTag = acqe_fip->event_tag;6755	phba->fcoe_eventtag = acqe_fip->event_tag;6756	switch (event_type) {6757	case LPFC_FIP_EVENT_TYPE_NEW_FCF:6758	case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:6759		if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)6760			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6761					"2546 New FCF event, evt_tag:x%x, "6762					"index:x%x\n",6763					acqe_fip->event_tag,6764					acqe_fip->index);6765		else6766			lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |6767					LOG_DISCOVERY,6768					"2788 FCF param modified event, "6769					"evt_tag:x%x, index:x%x\n",6770					acqe_fip->event_tag,6771					acqe_fip->index);6772		if (phba->fcf.fcf_flag & FCF_DISCOVERY) {6773			/*6774			 * During period of FCF discovery, read the FCF6775			 * table record indexed by the event to update6776			 * FCF roundrobin failover eligible FCF bmask.6777			 */6778			lpfc_printf_log(phba, KERN_INFO, LOG_FIP |6779					LOG_DISCOVERY,6780					"2779 Read FCF (x%x) for updating "6781					"roundrobin FCF failover bmask\n",6782					acqe_fip->index);6783			rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);6784		}6785 6786		/* If the FCF discovery is in progress, do nothing. */6787		if (test_bit(FCF_TS_INPROG, &phba->hba_flag))6788			break;6789		spin_lock_irq(&phba->hbalock);6790		/* If fast FCF failover rescan event is pending, do nothing */6791		if (phba->fcf.fcf_flag & (FCF_REDISC_EVT | FCF_REDISC_PEND)) {6792			spin_unlock_irq(&phba->hbalock);6793			break;6794		}6795 6796		/* If the FCF has been in discovered state, do nothing. */6797		if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {6798			spin_unlock_irq(&phba->hbalock);6799			break;6800		}6801		spin_unlock_irq(&phba->hbalock);6802 6803		/* Otherwise, scan the entire FCF table and re-discover SAN */6804		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,6805				"2770 Start FCF table scan per async FCF "6806				"event, evt_tag:x%x, index:x%x\n",6807				acqe_fip->event_tag, acqe_fip->index);6808		rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,6809						     LPFC_FCOE_FCF_GET_FIRST);6810		if (rc)6811			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6812					"2547 Issue FCF scan read FCF mailbox "6813					"command failed (x%x)\n", rc);6814		break;6815 6816	case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:6817		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6818				"2548 FCF Table full count 0x%x tag 0x%x\n",6819				bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),6820				acqe_fip->event_tag);6821		break;6822 6823	case LPFC_FIP_EVENT_TYPE_FCF_DEAD:6824		phba->fcoe_cvl_eventtag = acqe_fip->event_tag;6825		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6826				"2549 FCF (x%x) disconnected from network, "6827				 "tag:x%x\n", acqe_fip->index,6828				 acqe_fip->event_tag);6829		/*6830		 * If we are in the middle of FCF failover process, clear6831		 * the corresponding FCF bit in the roundrobin bitmap.6832		 */6833		spin_lock_irq(&phba->hbalock);6834		if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&6835		    (phba->fcf.current_rec.fcf_indx != acqe_fip->index)) {6836			spin_unlock_irq(&phba->hbalock);6837			/* Update FLOGI FCF failover eligible FCF bmask */6838			lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);6839			break;6840		}6841		spin_unlock_irq(&phba->hbalock);6842 6843		/* If the event is not for currently used fcf do nothing */6844		if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)6845			break;6846 6847		/*6848		 * Otherwise, request the port to rediscover the entire FCF6849		 * table for a fast recovery from case that the current FCF6850		 * is no longer valid as we are not in the middle of FCF6851		 * failover process already.6852		 */6853		spin_lock_irq(&phba->hbalock);6854		/* Mark the fast failover process in progress */6855		phba->fcf.fcf_flag |= FCF_DEAD_DISC;6856		spin_unlock_irq(&phba->hbalock);6857 6858		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,6859				"2771 Start FCF fast failover process due to "6860				"FCF DEAD event: evt_tag:x%x, fcf_index:x%x "6861				"\n", acqe_fip->event_tag, acqe_fip->index);6862		rc = lpfc_sli4_redisc_fcf_table(phba);6863		if (rc) {6864			lpfc_printf_log(phba, KERN_ERR, LOG_FIP |6865					LOG_TRACE_EVENT,6866					"2772 Issue FCF rediscover mailbox "6867					"command failed, fail through to FCF "6868					"dead event\n");6869			spin_lock_irq(&phba->hbalock);6870			phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;6871			spin_unlock_irq(&phba->hbalock);6872			/*6873			 * Last resort will fail over by treating this6874			 * as a link down to FCF registration.6875			 */6876			lpfc_sli4_fcf_dead_failthrough(phba);6877		} else {6878			/* Reset FCF roundrobin bmask for new discovery */6879			lpfc_sli4_clear_fcf_rr_bmask(phba);6880			/*6881			 * Handling fast FCF failover to a DEAD FCF event is6882			 * considered equalivant to receiving CVL to all vports.6883			 */6884			lpfc_sli4_perform_all_vport_cvl(phba);6885		}6886		break;6887	case LPFC_FIP_EVENT_TYPE_CVL:6888		phba->fcoe_cvl_eventtag = acqe_fip->event_tag;6889		lpfc_printf_log(phba, KERN_ERR,6890				LOG_TRACE_EVENT,6891			"2718 Clear Virtual Link Received for VPI 0x%x"6892			" tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);6893 6894		vport = lpfc_find_vport_by_vpid(phba,6895						acqe_fip->index);6896		ndlp = lpfc_sli4_perform_vport_cvl(vport);6897		if (!ndlp)6898			break;6899		active_vlink_present = 0;6900 6901		vports = lpfc_create_vport_work_array(phba);6902		if (vports) {6903			for (i = 0; i <= phba->max_vports && vports[i] != NULL;6904					i++) {6905				if (!test_bit(FC_VPORT_CVL_RCVD,6906					      &vports[i]->fc_flag) &&6907				    vports[i]->port_state > LPFC_FDISC) {6908					active_vlink_present = 1;6909					break;6910				}6911			}6912			lpfc_destroy_vport_work_array(phba, vports);6913		}6914 6915		/*6916		 * Don't re-instantiate if vport is marked for deletion.6917		 * If we are here first then vport_delete is going to wait6918		 * for discovery to complete.6919		 */6920		if (!test_bit(FC_UNLOADING, &vport->load_flag) &&6921		    active_vlink_present) {6922			/*6923			 * If there are other active VLinks present,6924			 * re-instantiate the Vlink using FDISC.6925			 */6926			mod_timer(&ndlp->nlp_delayfunc,6927				  jiffies + msecs_to_jiffies(1000));6928			spin_lock_irq(&ndlp->lock);6929			ndlp->nlp_flag |= NLP_DELAY_TMO;6930			spin_unlock_irq(&ndlp->lock);6931			ndlp->nlp_last_elscmd = ELS_CMD_FDISC;6932			vport->port_state = LPFC_FDISC;6933		} else {6934			/*6935			 * Otherwise, we request port to rediscover6936			 * the entire FCF table for a fast recovery6937			 * from possible case that the current FCF6938			 * is no longer valid if we are not already6939			 * in the FCF failover process.6940			 */6941			spin_lock_irq(&phba->hbalock);6942			if (phba->fcf.fcf_flag & FCF_DISCOVERY) {6943				spin_unlock_irq(&phba->hbalock);6944				break;6945			}6946			/* Mark the fast failover process in progress */6947			phba->fcf.fcf_flag |= FCF_ACVL_DISC;6948			spin_unlock_irq(&phba->hbalock);6949			lpfc_printf_log(phba, KERN_INFO, LOG_FIP |6950					LOG_DISCOVERY,6951					"2773 Start FCF failover per CVL, "6952					"evt_tag:x%x\n", acqe_fip->event_tag);6953			rc = lpfc_sli4_redisc_fcf_table(phba);6954			if (rc) {6955				lpfc_printf_log(phba, KERN_ERR, LOG_FIP |6956						LOG_TRACE_EVENT,6957						"2774 Issue FCF rediscover "6958						"mailbox command failed, "6959						"through to CVL event\n");6960				spin_lock_irq(&phba->hbalock);6961				phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;6962				spin_unlock_irq(&phba->hbalock);6963				/*6964				 * Last resort will be re-try on the6965				 * the current registered FCF entry.6966				 */6967				lpfc_retry_pport_discovery(phba);6968			} else6969				/*6970				 * Reset FCF roundrobin bmask for new6971				 * discovery.6972				 */6973				lpfc_sli4_clear_fcf_rr_bmask(phba);6974		}6975		break;6976	default:6977		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6978				"0288 Unknown FCoE event type 0x%x event tag "6979				"0x%x\n", event_type, acqe_fip->event_tag);6980		break;6981	}6982}6983 6984/**6985 * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event6986 * @phba: pointer to lpfc hba data structure.6987 * @acqe_dcbx: pointer to the async dcbx completion queue entry.6988 *6989 * This routine is to handle the SLI4 asynchronous dcbx event.6990 **/6991static void6992lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,6993			 struct lpfc_acqe_dcbx *acqe_dcbx)6994{6995	phba->fc_eventTag = acqe_dcbx->event_tag;6996	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,6997			"0290 The SLI4 DCBX asynchronous event is not "6998			"handled yet\n");6999}7000 7001/**7002 * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event7003 * @phba: pointer to lpfc hba data structure.7004 * @acqe_grp5: pointer to the async grp5 completion queue entry.7005 *7006 * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event7007 * is an asynchronous notified of a logical link speed change.  The Port7008 * reports the logical link speed in units of 10Mbps.7009 **/7010static void7011lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,7012			 struct lpfc_acqe_grp5 *acqe_grp5)7013{7014	uint16_t prev_ll_spd;7015 7016	phba->fc_eventTag = acqe_grp5->event_tag;7017	phba->fcoe_eventtag = acqe_grp5->event_tag;7018	prev_ll_spd = phba->sli4_hba.link_state.logical_speed;7019	phba->sli4_hba.link_state.logical_speed =7020		(bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10;7021	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,7022			"2789 GRP5 Async Event: Updating logical link speed "7023			"from %dMbps to %dMbps\n", prev_ll_spd,7024			phba->sli4_hba.link_state.logical_speed);7025}7026 7027/**7028 * lpfc_sli4_async_cmstat_evt - Process the asynchronous cmstat event7029 * @phba: pointer to lpfc hba data structure.7030 *7031 * This routine is to handle the SLI4 asynchronous cmstat event. A cmstat event7032 * is an asynchronous notification of a request to reset CM stats.7033 **/7034static void7035lpfc_sli4_async_cmstat_evt(struct lpfc_hba *phba)7036{7037	if (!phba->cgn_i)7038		return;7039	lpfc_init_congestion_stat(phba);7040}7041 7042/**7043 * lpfc_cgn_params_val - Validate FW congestion parameters.7044 * @phba: pointer to lpfc hba data structure.7045 * @p_cfg_param: pointer to FW provided congestion parameters.7046 *7047 * This routine validates the congestion parameters passed7048 * by the FW to the driver via an ACQE event.7049 **/7050static void7051lpfc_cgn_params_val(struct lpfc_hba *phba, struct lpfc_cgn_param *p_cfg_param)7052{7053	spin_lock_irq(&phba->hbalock);7054 7055	if (!lpfc_rangecheck(p_cfg_param->cgn_param_mode, LPFC_CFG_OFF,7056			     LPFC_CFG_MONITOR)) {7057		lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT,7058				"6225 CMF mode param out of range: %d\n",7059				 p_cfg_param->cgn_param_mode);7060		p_cfg_param->cgn_param_mode = LPFC_CFG_OFF;7061	}7062 7063	spin_unlock_irq(&phba->hbalock);7064}7065 7066static const char * const lpfc_cmf_mode_to_str[] = {7067	"OFF",7068	"MANAGED",7069	"MONITOR",7070};7071 7072/**7073 * lpfc_cgn_params_parse - Process a FW cong parm change event7074 * @phba: pointer to lpfc hba data structure.7075 * @p_cgn_param: pointer to a data buffer with the FW cong params.7076 * @len: the size of pdata in bytes.7077 *7078 * This routine validates the congestion management buffer signature7079 * from the FW, validates the contents and makes corrections for7080 * valid, in-range values.  If the signature magic is correct and7081 * after parameter validation, the contents are copied to the driver's7082 * @phba structure. If the magic is incorrect, an error message is7083 * logged.7084 **/7085static void7086lpfc_cgn_params_parse(struct lpfc_hba *phba,7087		      struct lpfc_cgn_param *p_cgn_param, uint32_t len)7088{7089	struct lpfc_cgn_info *cp;7090	uint32_t crc, oldmode;7091	char acr_string[4] = {0};7092 7093	/* Make sure the FW has encoded the correct magic number to7094	 * validate the congestion parameter in FW memory.7095	 */7096	if (p_cgn_param->cgn_param_magic == LPFC_CFG_PARAM_MAGIC_NUM) {7097		lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,7098				"4668 FW cgn parm buffer data: "7099				"magic 0x%x version %d mode %d "7100				"level0 %d level1 %d "7101				"level2 %d byte13 %d "7102				"byte14 %d byte15 %d "7103				"byte11 %d byte12 %d activeMode %d\n",7104				p_cgn_param->cgn_param_magic,7105				p_cgn_param->cgn_param_version,7106				p_cgn_param->cgn_param_mode,7107				p_cgn_param->cgn_param_level0,7108				p_cgn_param->cgn_param_level1,7109				p_cgn_param->cgn_param_level2,7110				p_cgn_param->byte13,7111				p_cgn_param->byte14,7112				p_cgn_param->byte15,7113				p_cgn_param->byte11,7114				p_cgn_param->byte12,7115				phba->cmf_active_mode);7116 7117		oldmode = phba->cmf_active_mode;7118 7119		/* Any parameters out of range are corrected to defaults7120		 * by this routine.  No need to fail.7121		 */7122		lpfc_cgn_params_val(phba, p_cgn_param);7123 7124		/* Parameters are verified, move them into driver storage */7125		spin_lock_irq(&phba->hbalock);7126		memcpy(&phba->cgn_p, p_cgn_param,7127		       sizeof(struct lpfc_cgn_param));7128 7129		/* Update parameters in congestion info buffer now */7130		if (phba->cgn_i) {7131			cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;7132			cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;7133			cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;7134			cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;7135			cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;7136			crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,7137						  LPFC_CGN_CRC32_SEED);7138			cp->cgn_info_crc = cpu_to_le32(crc);7139		}7140		spin_unlock_irq(&phba->hbalock);7141 7142		phba->cmf_active_mode = phba->cgn_p.cgn_param_mode;7143 7144		switch (oldmode) {7145		case LPFC_CFG_OFF:7146			if (phba->cgn_p.cgn_param_mode != LPFC_CFG_OFF) {7147				/* Turning CMF on */7148				lpfc_cmf_start(phba);7149 7150				if (phba->link_state >= LPFC_LINK_UP) {7151					phba->cgn_reg_fpin =7152						phba->cgn_init_reg_fpin;7153					phba->cgn_reg_signal =7154						phba->cgn_init_reg_signal;7155					lpfc_issue_els_edc(phba->pport, 0);7156				}7157			}7158			break;7159		case LPFC_CFG_MANAGED:7160			switch (phba->cgn_p.cgn_param_mode) {7161			case LPFC_CFG_OFF:7162				/* Turning CMF off */7163				lpfc_cmf_stop(phba);7164				if (phba->link_state >= LPFC_LINK_UP)7165					lpfc_issue_els_edc(phba->pport, 0);7166				break;7167			case LPFC_CFG_MONITOR:7168				phba->cmf_max_bytes_per_interval =7169					phba->cmf_link_byte_count;7170 7171				/* Resume blocked IO - unblock on workqueue */7172				queue_work(phba->wq,7173					   &phba->unblock_request_work);7174				break;7175			}7176			break;7177		case LPFC_CFG_MONITOR:7178			switch (phba->cgn_p.cgn_param_mode) {7179			case LPFC_CFG_OFF:7180				/* Turning CMF off */7181				lpfc_cmf_stop(phba);7182				if (phba->link_state >= LPFC_LINK_UP)7183					lpfc_issue_els_edc(phba->pport, 0);7184				break;7185			case LPFC_CFG_MANAGED:7186				lpfc_cmf_signal_init(phba);7187				break;7188			}7189			break;7190		}7191		if (oldmode != LPFC_CFG_OFF ||7192		    oldmode != phba->cgn_p.cgn_param_mode) {7193			if (phba->cgn_p.cgn_param_mode == LPFC_CFG_MANAGED)7194				scnprintf(acr_string, sizeof(acr_string), "%u",7195					  phba->cgn_p.cgn_param_level0);7196			else7197				scnprintf(acr_string, sizeof(acr_string), "NA");7198 7199			dev_info(&phba->pcidev->dev, "%d: "7200				 "4663 CMF: Mode %s acr %s\n",7201				 phba->brd_no,7202				 lpfc_cmf_mode_to_str7203				 [phba->cgn_p.cgn_param_mode],7204				 acr_string);7205		}7206	} else {7207		lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,7208				"4669 FW cgn parm buf wrong magic 0x%x "7209				"version %d\n", p_cgn_param->cgn_param_magic,7210				p_cgn_param->cgn_param_version);7211	}7212}7213 7214/**7215 * lpfc_sli4_cgn_params_read - Read and Validate FW congestion parameters.7216 * @phba: pointer to lpfc hba data structure.7217 *7218 * This routine issues a read_object mailbox command to7219 * get the congestion management parameters from the FW7220 * parses it and updates the driver maintained values.7221 *7222 * Returns7223 *  0     if the object was empty7224 *  -Eval if an error was encountered7225 *  Count if bytes were read from object7226 **/7227int7228lpfc_sli4_cgn_params_read(struct lpfc_hba *phba)7229{7230	int ret = 0;7231	struct lpfc_cgn_param *p_cgn_param = NULL;7232	u32 *pdata = NULL;7233	u32 len = 0;7234 7235	/* Find out if the FW has a new set of congestion parameters. */7236	len = sizeof(struct lpfc_cgn_param);7237	pdata = kzalloc(len, GFP_KERNEL);7238	if (!pdata)7239		return -ENOMEM;7240	ret = lpfc_read_object(phba, (char *)LPFC_PORT_CFG_NAME,7241			       pdata, len);7242 7243	/* 0 means no data.  A negative means error.  A positive means7244	 * bytes were copied.7245	 */7246	if (!ret) {7247		lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,7248				"4670 CGN RD OBJ returns no data\n");7249		goto rd_obj_err;7250	} else if (ret < 0) {7251		/* Some error.  Just exit and return it to the caller.*/7252		goto rd_obj_err;7253	}7254 7255	lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,7256			"6234 READ CGN PARAMS Successful %d\n", len);7257 7258	/* Parse data pointer over len and update the phba congestion7259	 * parameters with values passed back.  The receive rate values7260	 * may have been altered in FW, but take no action here.7261	 */7262	p_cgn_param = (struct lpfc_cgn_param *)pdata;7263	lpfc_cgn_params_parse(phba, p_cgn_param, len);7264 7265 rd_obj_err:7266	kfree(pdata);7267	return ret;7268}7269 7270/**7271 * lpfc_sli4_cgn_parm_chg_evt - Process a FW congestion param change event7272 * @phba: pointer to lpfc hba data structure.7273 *7274 * The FW generated Async ACQE SLI event calls this routine when7275 * the event type is an SLI Internal Port Event and the Event Code7276 * indicates a change to the FW maintained congestion parameters.7277 *7278 * This routine executes a Read_Object mailbox call to obtain the7279 * current congestion parameters maintained in FW and corrects7280 * the driver's active congestion parameters.7281 *7282 * The acqe event is not passed because there is no further data7283 * required.7284 *7285 * Returns nonzero error if event processing encountered an error.7286 * Zero otherwise for success.7287 **/7288static int7289lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *phba)7290{7291	int ret = 0;7292 7293	if (!phba->sli4_hba.pc_sli4_params.cmf) {7294		lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,7295				"4664 Cgn Evt when E2E off. Drop event\n");7296		return -EACCES;7297	}7298 7299	/* If the event is claiming an empty object, it's ok.  A write7300	 * could have cleared it.  Only error is a negative return7301	 * status.7302	 */7303	ret = lpfc_sli4_cgn_params_read(phba);7304	if (ret < 0) {7305		lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,7306				"4667 Error reading Cgn Params (%d)\n",7307				ret);7308	} else if (!ret) {7309		lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,7310				"4673 CGN Event empty object.\n");7311	}7312	return ret;7313}7314 7315/**7316 * lpfc_sli4_async_event_proc - Process all the pending asynchronous event7317 * @phba: pointer to lpfc hba data structure.7318 *7319 * This routine is invoked by the worker thread to process all the pending7320 * SLI4 asynchronous events.7321 **/7322void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)7323{7324	struct lpfc_cq_event *cq_event;7325	unsigned long iflags;7326 7327	/* First, declare the async event has been handled */7328	clear_bit(ASYNC_EVENT, &phba->hba_flag);7329 7330	/* Now, handle all the async events */7331	spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);7332	while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {7333		list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,7334				 cq_event, struct lpfc_cq_event, list);7335		spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock,7336				       iflags);7337 7338		/* Process the asynchronous event */7339		switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {7340		case LPFC_TRAILER_CODE_LINK:7341			lpfc_sli4_async_link_evt(phba,7342						 &cq_event->cqe.acqe_link);7343			break;7344		case LPFC_TRAILER_CODE_FCOE:7345			lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);7346			break;7347		case LPFC_TRAILER_CODE_DCBX:7348			lpfc_sli4_async_dcbx_evt(phba,7349						 &cq_event->cqe.acqe_dcbx);7350			break;7351		case LPFC_TRAILER_CODE_GRP5:7352			lpfc_sli4_async_grp5_evt(phba,7353						 &cq_event->cqe.acqe_grp5);7354			break;7355		case LPFC_TRAILER_CODE_FC:7356			lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);7357			break;7358		case LPFC_TRAILER_CODE_SLI:7359			lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);7360			break;7361		default:7362			lpfc_printf_log(phba, KERN_ERR,7363					LOG_TRACE_EVENT,7364					"1804 Invalid asynchronous event code: "7365					"x%x\n", bf_get(lpfc_trailer_code,7366					&cq_event->cqe.mcqe_cmpl));7367			break;7368		}7369 7370		/* Free the completion event processed to the free pool */7371		lpfc_sli4_cq_event_release(phba, cq_event);7372		spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);7373	}7374	spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);7375}7376 7377/**7378 * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event7379 * @phba: pointer to lpfc hba data structure.7380 *7381 * This routine is invoked by the worker thread to process FCF table7382 * rediscovery pending completion event.7383 **/7384void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)7385{7386	int rc;7387 7388	spin_lock_irq(&phba->hbalock);7389	/* Clear FCF rediscovery timeout event */7390	phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;7391	/* Clear driver fast failover FCF record flag */7392	phba->fcf.failover_rec.flag = 0;7393	/* Set state for FCF fast failover */7394	phba->fcf.fcf_flag |= FCF_REDISC_FOV;7395	spin_unlock_irq(&phba->hbalock);7396 7397	/* Scan FCF table from the first entry to re-discover SAN */7398	lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,7399			"2777 Start post-quiescent FCF table scan\n");7400	rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);7401	if (rc)7402		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,7403				"2747 Issue FCF scan read FCF mailbox "7404				"command failed 0x%x\n", rc);7405}7406 7407/**7408 * lpfc_api_table_setup - Set up per hba pci-device group func api jump table7409 * @phba: pointer to lpfc hba data structure.7410 * @dev_grp: The HBA PCI-Device group number.7411 *7412 * This routine is invoked to set up the per HBA PCI-Device group function7413 * API jump table entries.7414 *7415 * Return: 0 if success, otherwise -ENODEV7416 **/7417int7418lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)7419{7420	int rc;7421 7422	/* Set up lpfc PCI-device group */7423	phba->pci_dev_grp = dev_grp;7424 7425	/* The LPFC_PCI_DEV_OC uses SLI4 */7426	if (dev_grp == LPFC_PCI_DEV_OC)7427		phba->sli_rev = LPFC_SLI_REV4;7428 7429	/* Set up device INIT API function jump table */7430	rc = lpfc_init_api_table_setup(phba, dev_grp);7431	if (rc)7432		return -ENODEV;7433	/* Set up SCSI API function jump table */7434	rc = lpfc_scsi_api_table_setup(phba, dev_grp);7435	if (rc)7436		return -ENODEV;7437	/* Set up SLI API function jump table */7438	rc = lpfc_sli_api_table_setup(phba, dev_grp);7439	if (rc)7440		return -ENODEV;7441	/* Set up MBOX API function jump table */7442	rc = lpfc_mbox_api_table_setup(phba, dev_grp);7443	if (rc)7444		return -ENODEV;7445 7446	return 0;7447}7448 7449/**7450 * lpfc_log_intr_mode - Log the active interrupt mode7451 * @phba: pointer to lpfc hba data structure.7452 * @intr_mode: active interrupt mode adopted.7453 *7454 * This routine it invoked to log the currently used active interrupt mode7455 * to the device.7456 **/7457static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)7458{7459	switch (intr_mode) {7460	case 0:7461		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,7462				"0470 Enable INTx interrupt mode.\n");7463		break;7464	case 1:7465		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,7466				"0481 Enabled MSI interrupt mode.\n");7467		break;7468	case 2:7469		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,7470				"0480 Enabled MSI-X interrupt mode.\n");7471		break;7472	default:7473		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,7474				"0482 Illegal interrupt mode.\n");7475		break;7476	}7477	return;7478}7479 7480/**7481 * lpfc_enable_pci_dev - Enable a generic PCI device.7482 * @phba: pointer to lpfc hba data structure.7483 *7484 * This routine is invoked to enable the PCI device that is common to all7485 * PCI devices.7486 *7487 * Return codes7488 * 	0 - successful7489 * 	other values - error7490 **/7491static int7492lpfc_enable_pci_dev(struct lpfc_hba *phba)7493{7494	struct pci_dev *pdev;7495 7496	/* Obtain PCI device reference */7497	if (!phba->pcidev)7498		goto out_error;7499	else7500		pdev = phba->pcidev;7501	/* Enable PCI device */7502	if (pci_enable_device_mem(pdev))7503		goto out_error;7504	/* Request PCI resource for the device */7505	if (pci_request_mem_regions(pdev, LPFC_DRIVER_NAME))7506		goto out_disable_device;7507	/* Set up device as PCI master and save state for EEH */7508	pci_set_master(pdev);7509	pci_try_set_mwi(pdev);7510	pci_save_state(pdev);7511 7512	/* PCIe EEH recovery on powerpc platforms needs fundamental reset */7513	if (pci_is_pcie(pdev))7514		pdev->needs_freset = 1;7515 7516	return 0;7517 7518out_disable_device:7519	pci_disable_device(pdev);7520out_error:7521	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,7522			"1401 Failed to enable pci device\n");7523	return -ENODEV;7524}7525 7526/**7527 * lpfc_disable_pci_dev - Disable a generic PCI device.7528 * @phba: pointer to lpfc hba data structure.7529 *7530 * This routine is invoked to disable the PCI device that is common to all7531 * PCI devices.7532 **/7533static void7534lpfc_disable_pci_dev(struct lpfc_hba *phba)7535{7536	struct pci_dev *pdev;7537 7538	/* Obtain PCI device reference */7539	if (!phba->pcidev)7540		return;7541	else7542		pdev = phba->pcidev;7543	/* Release PCI resource and disable PCI device */7544	pci_release_mem_regions(pdev);7545	pci_disable_device(pdev);7546 7547	return;7548}7549 7550/**7551 * lpfc_reset_hba - Reset a hba7552 * @phba: pointer to lpfc hba data structure.7553 *7554 * This routine is invoked to reset a hba device. It brings the HBA7555 * offline, performs a board restart, and then brings the board back7556 * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up7557 * on outstanding mailbox commands.7558 **/7559void7560lpfc_reset_hba(struct lpfc_hba *phba)7561{7562	int rc = 0;7563 7564	/* If resets are disabled then set error state and return. */7565	if (!phba->cfg_enable_hba_reset) {7566		phba->link_state = LPFC_HBA_ERROR;7567		return;7568	}7569 7570	/* If not LPFC_SLI_ACTIVE, force all IO to be flushed */7571	if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) {7572		lpfc_offline_prep(phba, LPFC_MBX_WAIT);7573	} else {7574		if (test_bit(MBX_TMO_ERR, &phba->bit_flags)) {7575			/* Perform a PCI function reset to start from clean */7576			rc = lpfc_pci_function_reset(phba);7577			lpfc_els_flush_all_cmd(phba);7578		}7579		lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);7580		lpfc_sli_flush_io_rings(phba);7581	}7582	lpfc_offline(phba);7583	clear_bit(MBX_TMO_ERR, &phba->bit_flags);7584	if (unlikely(rc)) {7585		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,7586				"8888 PCI function reset failed rc %x\n",7587				rc);7588	} else {7589		lpfc_sli_brdrestart(phba);7590		lpfc_online(phba);7591		lpfc_unblock_mgmt_io(phba);7592	}7593}7594 7595/**7596 * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions7597 * @phba: pointer to lpfc hba data structure.7598 *7599 * This function enables the PCI SR-IOV virtual functions to a physical7600 * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to7601 * enable the number of virtual functions to the physical function. As7602 * not all devices support SR-IOV, the return code from the pci_enable_sriov()7603 * API call does not considered as an error condition for most of the device.7604 **/7605uint16_t7606lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)7607{7608	struct pci_dev *pdev = phba->pcidev;7609	uint16_t nr_virtfn;7610	int pos;7611 7612	pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);7613	if (pos == 0)7614		return 0;7615 7616	pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);7617	return nr_virtfn;7618}7619 7620/**7621 * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions7622 * @phba: pointer to lpfc hba data structure.7623 * @nr_vfn: number of virtual functions to be enabled.7624 *7625 * This function enables the PCI SR-IOV virtual functions to a physical7626 * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to7627 * enable the number of virtual functions to the physical function. As7628 * not all devices support SR-IOV, the return code from the pci_enable_sriov()7629 * API call does not considered as an error condition for most of the device.7630 **/7631int7632lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)7633{7634	struct pci_dev *pdev = phba->pcidev;7635	uint16_t max_nr_vfn;7636	int rc;7637 7638	max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);7639	if (nr_vfn > max_nr_vfn) {7640		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,7641				"3057 Requested vfs (%d) greater than "7642				"supported vfs (%d)", nr_vfn, max_nr_vfn);7643		return -EINVAL;7644	}7645 7646	rc = pci_enable_sriov(pdev, nr_vfn);7647	if (rc) {7648		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,7649				"2806 Failed to enable sriov on this device "7650				"with vfn number nr_vf:%d, rc:%d\n",7651				nr_vfn, rc);7652	} else7653		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,7654				"2807 Successful enable sriov on this device "7655				"with vfn number nr_vf:%d\n", nr_vfn);7656	return rc;7657}7658 7659static void7660lpfc_unblock_requests_work(struct work_struct *work)7661{7662	struct lpfc_hba *phba = container_of(work, struct lpfc_hba,7663					     unblock_request_work);7664 7665	lpfc_unblock_requests(phba);7666}7667 7668/**7669 * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.7670 * @phba: pointer to lpfc hba data structure.7671 *7672 * This routine is invoked to set up the driver internal resources before the7673 * device specific resource setup to support the HBA device it attached to.7674 *7675 * Return codes7676 *	0 - successful7677 *	other values - error7678 **/7679static int7680lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)7681{7682	struct lpfc_sli *psli = &phba->sli;7683 7684	/*7685	 * Driver resources common to all SLI revisions7686	 */7687	atomic_set(&phba->fast_event_count, 0);7688	atomic_set(&phba->dbg_log_idx, 0);7689	atomic_set(&phba->dbg_log_cnt, 0);7690	atomic_set(&phba->dbg_log_dmping, 0);7691	spin_lock_init(&phba->hbalock);7692 7693	/* Initialize port_list spinlock */7694	spin_lock_init(&phba->port_list_lock);7695	INIT_LIST_HEAD(&phba->port_list);7696 7697	INIT_LIST_HEAD(&phba->work_list);7698 7699	/* Initialize the wait queue head for the kernel thread */7700	init_waitqueue_head(&phba->work_waitq);7701 7702	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,7703			"1403 Protocols supported %s %s %s\n",7704			((phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ?7705				"SCSI" : " "),7706			((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) ?7707				"NVME" : " "),7708			(phba->nvmet_support ? "NVMET" : " "));7709 7710	/* ras_fwlog state */7711	spin_lock_init(&phba->ras_fwlog_lock);7712 7713	/* Initialize the IO buffer list used by driver for SLI3 SCSI */7714	spin_lock_init(&phba->scsi_buf_list_get_lock);7715	INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_get);7716	spin_lock_init(&phba->scsi_buf_list_put_lock);7717	INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);7718 7719	/* Initialize the fabric iocb list */7720	INIT_LIST_HEAD(&phba->fabric_iocb_list);7721 7722	/* Initialize list to save ELS buffers */7723	INIT_LIST_HEAD(&phba->elsbuf);7724 7725	/* Initialize FCF connection rec list */7726	INIT_LIST_HEAD(&phba->fcf_conn_rec_list);7727 7728	/* Initialize OAS configuration list */7729	spin_lock_init(&phba->devicelock);7730	INIT_LIST_HEAD(&phba->luns);7731 7732	/* MBOX heartbeat timer */7733	timer_setup(&psli->mbox_tmo, lpfc_mbox_timeout, 0);7734	/* Fabric block timer */7735	timer_setup(&phba->fabric_block_timer, lpfc_fabric_block_timeout, 0);7736	/* EA polling mode timer */7737	timer_setup(&phba->eratt_poll, lpfc_poll_eratt, 0);7738	/* Heartbeat timer */7739	timer_setup(&phba->hb_tmofunc, lpfc_hb_timeout, 0);7740 7741	INIT_DELAYED_WORK(&phba->eq_delay_work, lpfc_hb_eq_delay_work);7742 7743	INIT_DELAYED_WORK(&phba->idle_stat_delay_work,7744			  lpfc_idle_stat_delay_work);7745	INIT_WORK(&phba->unblock_request_work, lpfc_unblock_requests_work);7746	return 0;7747}7748 7749/**7750 * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev7751 * @phba: pointer to lpfc hba data structure.7752 *7753 * This routine is invoked to set up the driver internal resources specific to7754 * support the SLI-3 HBA device it attached to.7755 *7756 * Return codes7757 * 0 - successful7758 * other values - error7759 **/7760static int7761lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)7762{7763	int rc, entry_sz;7764 7765	/*7766	 * Initialize timers used by driver7767	 */7768 7769	/* FCP polling mode timer */7770	timer_setup(&phba->fcp_poll_timer, lpfc_poll_timeout, 0);7771 7772	/* Host attention work mask setup */7773	phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);7774	phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));7775 7776	/* Get all the module params for configuring this host */7777	lpfc_get_cfgparam(phba);7778	/* Set up phase-1 common device driver resources */7779 7780	rc = lpfc_setup_driver_resource_phase1(phba);7781	if (rc)7782		return -ENODEV;7783 7784	if (!phba->sli.sli3_ring)7785		phba->sli.sli3_ring = kcalloc(LPFC_SLI3_MAX_RING,7786					      sizeof(struct lpfc_sli_ring),7787					      GFP_KERNEL);7788	if (!phba->sli.sli3_ring)7789		return -ENOMEM;7790 7791	/*7792	 * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size7793	 * used to create the sg_dma_buf_pool must be dynamically calculated.7794	 */7795 7796	if (phba->sli_rev == LPFC_SLI_REV4)7797		entry_sz = sizeof(struct sli4_sge);7798	else7799		entry_sz = sizeof(struct ulp_bde64);7800 7801	/* There are going to be 2 reserved BDEs: 1 FCP cmnd + 1 FCP rsp */7802	if (phba->cfg_enable_bg) {7803		/*7804		 * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd,7805		 * the FCP rsp, and a BDE for each. Sice we have no control7806		 * over how many protection data segments the SCSI Layer7807		 * will hand us (ie: there could be one for every block7808		 * in the IO), we just allocate enough BDEs to accomidate7809		 * our max amount and we need to limit lpfc_sg_seg_cnt to7810		 * minimize the risk of running out.7811		 */7812		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +7813			sizeof(struct fcp_rsp) +7814			(LPFC_MAX_SG_SEG_CNT * entry_sz);7815 7816		if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SEG_CNT_DIF)7817			phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT_DIF;7818 7819		/* Total BDEs in BPL for scsi_sg_list and scsi_sg_prot_list */7820		phba->cfg_total_seg_cnt = LPFC_MAX_SG_SEG_CNT;7821	} else {7822		/*7823		 * The scsi_buf for a regular I/O will hold the FCP cmnd,7824		 * the FCP rsp, a BDE for each, and a BDE for up to7825		 * cfg_sg_seg_cnt data segments.7826		 */7827		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +7828			sizeof(struct fcp_rsp) +7829			((phba->cfg_sg_seg_cnt + 2) * entry_sz);7830 7831		/* Total BDEs in BPL for scsi_sg_list */7832		phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;7833	}7834 7835	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,7836			"9088 INIT sg_tablesize:%d dmabuf_size:%d total_bde:%d\n",7837			phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,7838			phba->cfg_total_seg_cnt);7839 7840	phba->max_vpi = LPFC_MAX_VPI;7841	/* This will be set to correct value after config_port mbox */7842	phba->max_vports = 0;7843 7844	/*7845	 * Initialize the SLI Layer to run with lpfc HBAs.7846	 */7847	lpfc_sli_setup(phba);7848	lpfc_sli_queue_init(phba);7849 7850	/* Allocate device driver memory */7851	if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))7852		return -ENOMEM;7853 7854	phba->lpfc_sg_dma_buf_pool =7855		dma_pool_create("lpfc_sg_dma_buf_pool",7856				&phba->pcidev->dev, phba->cfg_sg_dma_buf_size,7857				BPL_ALIGN_SZ, 0);7858 7859	if (!phba->lpfc_sg_dma_buf_pool)7860		goto fail_free_mem;7861 7862	phba->lpfc_cmd_rsp_buf_pool =7863			dma_pool_create("lpfc_cmd_rsp_buf_pool",7864					&phba->pcidev->dev,7865					sizeof(struct fcp_cmnd) +7866					sizeof(struct fcp_rsp),7867					BPL_ALIGN_SZ, 0);7868 7869	if (!phba->lpfc_cmd_rsp_buf_pool)7870		goto fail_free_dma_buf_pool;7871 7872	/*7873	 * Enable sr-iov virtual functions if supported and configured7874	 * through the module parameter.7875	 */7876	if (phba->cfg_sriov_nr_virtfn > 0) {7877		rc = lpfc_sli_probe_sriov_nr_virtfn(phba,7878						 phba->cfg_sriov_nr_virtfn);7879		if (rc) {7880			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,7881					"2808 Requested number of SR-IOV "7882					"virtual functions (%d) is not "7883					"supported\n",7884					phba->cfg_sriov_nr_virtfn);7885			phba->cfg_sriov_nr_virtfn = 0;7886		}7887	}7888 7889	return 0;7890 7891fail_free_dma_buf_pool:7892	dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);7893	phba->lpfc_sg_dma_buf_pool = NULL;7894fail_free_mem:7895	lpfc_mem_free(phba);7896	return -ENOMEM;7897}7898 7899/**7900 * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev7901 * @phba: pointer to lpfc hba data structure.7902 *7903 * This routine is invoked to unset the driver internal resources set up7904 * specific for supporting the SLI-3 HBA device it attached to.7905 **/7906static void7907lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)7908{7909	/* Free device driver memory allocated */7910	lpfc_mem_free_all(phba);7911 7912	return;7913}7914 7915/**7916 * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev7917 * @phba: pointer to lpfc hba data structure.7918 *7919 * This routine is invoked to set up the driver internal resources specific to7920 * support the SLI-4 HBA device it attached to.7921 *7922 * Return codes7923 * 	0 - successful7924 * 	other values - error7925 **/7926static int7927lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)7928{7929	LPFC_MBOXQ_t *mboxq;7930	MAILBOX_t *mb;7931	int rc, i, max_buf_size;7932	int longs;7933	int extra;7934	uint64_t wwn;7935	u32 if_type;7936	u32 if_fam;7937 7938	phba->sli4_hba.num_present_cpu = lpfc_present_cpu;7939	phba->sli4_hba.num_possible_cpu = cpumask_last(cpu_possible_mask) + 1;7940	phba->sli4_hba.curr_disp_cpu = 0;7941 7942	/* Get all the module params for configuring this host */7943	lpfc_get_cfgparam(phba);7944 7945	/* Set up phase-1 common device driver resources */7946	rc = lpfc_setup_driver_resource_phase1(phba);7947	if (rc)7948		return -ENODEV;7949 7950	/* Before proceed, wait for POST done and device ready */7951	rc = lpfc_sli4_post_status_check(phba);7952	if (rc)7953		return -ENODEV;7954 7955	/* Allocate all driver workqueues here */7956 7957	/* The lpfc_wq workqueue for deferred irq use */7958	phba->wq = alloc_workqueue("lpfc_wq", WQ_MEM_RECLAIM, 0);7959	if (!phba->wq)7960		return -ENOMEM;7961 7962	/*7963	 * Initialize timers used by driver7964	 */7965 7966	timer_setup(&phba->rrq_tmr, lpfc_rrq_timeout, 0);7967 7968	/* FCF rediscover timer */7969	timer_setup(&phba->fcf.redisc_wait, lpfc_sli4_fcf_redisc_wait_tmo, 0);7970 7971	/* CMF congestion timer */7972	hrtimer_init(&phba->cmf_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);7973	phba->cmf_timer.function = lpfc_cmf_timer;7974	/* CMF 1 minute stats collection timer */7975	hrtimer_init(&phba->cmf_stats_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);7976	phba->cmf_stats_timer.function = lpfc_cmf_stats_timer;7977 7978	/*7979	 * Control structure for handling external multi-buffer mailbox7980	 * command pass-through.7981	 */7982	memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,7983		sizeof(struct lpfc_mbox_ext_buf_ctx));7984	INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);7985 7986	phba->max_vpi = LPFC_MAX_VPI;7987 7988	/* This will be set to correct value after the read_config mbox */7989	phba->max_vports = 0;7990 7991	/* Program the default value of vlan_id and fc_map */7992	phba->valid_vlan = 0;7993	phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;7994	phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;7995	phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;7996 7997	/*7998	 * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands7999	 * we will associate a new ring, for each EQ/CQ/WQ tuple.8000	 * The WQ create will allocate the ring.8001	 */8002 8003	/* Initialize buffer queue management fields */8004	INIT_LIST_HEAD(&phba->hbqs[LPFC_ELS_HBQ].hbq_buffer_list);8005	phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;8006	phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;8007 8008	/* for VMID idle timeout if VMID is enabled */8009	if (lpfc_is_vmid_enabled(phba))8010		timer_setup(&phba->inactive_vmid_poll, lpfc_vmid_poll, 0);8011 8012	/*8013	 * Initialize the SLI Layer to run with lpfc SLI4 HBAs.8014	 */8015	/* Initialize the Abort buffer list used by driver */8016	spin_lock_init(&phba->sli4_hba.abts_io_buf_list_lock);8017	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_io_buf_list);8018 8019	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {8020		/* Initialize the Abort nvme buffer list used by driver */8021		spin_lock_init(&phba->sli4_hba.abts_nvmet_buf_list_lock);8022		INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);8023		INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_io_wait_list);8024		spin_lock_init(&phba->sli4_hba.t_active_list_lock);8025		INIT_LIST_HEAD(&phba->sli4_hba.t_active_ctx_list);8026	}8027 8028	/* This abort list used by worker thread */8029	spin_lock_init(&phba->sli4_hba.sgl_list_lock);8030	spin_lock_init(&phba->sli4_hba.nvmet_io_wait_lock);8031	spin_lock_init(&phba->sli4_hba.asynce_list_lock);8032	spin_lock_init(&phba->sli4_hba.els_xri_abrt_list_lock);8033 8034	/*8035	 * Initialize driver internal slow-path work queues8036	 */8037 8038	/* Driver internel slow-path CQ Event pool */8039	INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);8040	/* Response IOCB work queue list */8041	INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);8042	/* Asynchronous event CQ Event work queue list */8043	INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);8044	/* Slow-path XRI aborted CQ Event work queue list */8045	INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);8046	/* Receive queue CQ Event work queue list */8047	INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);8048 8049	/* Initialize extent block lists. */8050	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);8051	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);8052	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);8053	INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);8054 8055	/* Initialize mboxq lists. If the early init routines fail8056	 * these lists need to be correctly initialized.8057	 */8058	INIT_LIST_HEAD(&phba->sli.mboxq);8059	INIT_LIST_HEAD(&phba->sli.mboxq_cmpl);8060 8061	/* initialize optic_state to 0xFF */8062	phba->sli4_hba.lnk_info.optic_state = 0xff;8063 8064	/* Allocate device driver memory */8065	rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);8066	if (rc)8067		goto out_destroy_workqueue;8068 8069	/* IF Type 2 ports get initialized now. */8070	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=8071	    LPFC_SLI_INTF_IF_TYPE_2) {8072		rc = lpfc_pci_function_reset(phba);8073		if (unlikely(rc)) {8074			rc = -ENODEV;8075			goto out_free_mem;8076		}8077		phba->temp_sensor_support = 1;8078	}8079 8080	/* Create the bootstrap mailbox command */8081	rc = lpfc_create_bootstrap_mbox(phba);8082	if (unlikely(rc))8083		goto out_free_mem;8084 8085	/* Set up the host's endian order with the device. */8086	rc = lpfc_setup_endian_order(phba);8087	if (unlikely(rc))8088		goto out_free_bsmbx;8089 8090	/* Set up the hba's configuration parameters. */8091	rc = lpfc_sli4_read_config(phba);8092	if (unlikely(rc))8093		goto out_free_bsmbx;8094 8095	if (phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {8096		/* Right now the link is down, if FA-PWWN is configured the8097		 * firmware will try FLOGI before the driver gets a link up.8098		 * If it fails, the driver should get a MISCONFIGURED async8099		 * event which will clear this flag. The only notification8100		 * the driver gets is if it fails, if it succeeds there is no8101		 * notification given. Assume success.8102		 */8103		phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;8104	}8105 8106	rc = lpfc_mem_alloc_active_rrq_pool_s4(phba);8107	if (unlikely(rc))8108		goto out_free_bsmbx;8109 8110	/* IF Type 0 ports get initialized now. */8111	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==8112	    LPFC_SLI_INTF_IF_TYPE_0) {8113		rc = lpfc_pci_function_reset(phba);8114		if (unlikely(rc))8115			goto out_free_bsmbx;8116	}8117 8118	mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,8119						       GFP_KERNEL);8120	if (!mboxq) {8121		rc = -ENOMEM;8122		goto out_free_bsmbx;8123	}8124 8125	/* Check for NVMET being configured */8126	phba->nvmet_support = 0;8127	if (lpfc_enable_nvmet_cnt) {8128 8129		/* First get WWN of HBA instance */8130		lpfc_read_nv(phba, mboxq);8131		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);8132		if (rc != MBX_SUCCESS) {8133			lpfc_printf_log(phba, KERN_ERR,8134					LOG_TRACE_EVENT,8135					"6016 Mailbox failed , mbxCmd x%x "8136					"READ_NV, mbxStatus x%x\n",8137					bf_get(lpfc_mqe_command, &mboxq->u.mqe),8138					bf_get(lpfc_mqe_status, &mboxq->u.mqe));8139			mempool_free(mboxq, phba->mbox_mem_pool);8140			rc = -EIO;8141			goto out_free_bsmbx;8142		}8143		mb = &mboxq->u.mb;8144		memcpy(&wwn, (char *)mb->un.varRDnvp.nodename,8145		       sizeof(uint64_t));8146		wwn = cpu_to_be64(wwn);8147		phba->sli4_hba.wwnn.u.name = wwn;8148		memcpy(&wwn, (char *)mb->un.varRDnvp.portname,8149		       sizeof(uint64_t));8150		/* wwn is WWPN of HBA instance */8151		wwn = cpu_to_be64(wwn);8152		phba->sli4_hba.wwpn.u.name = wwn;8153 8154		/* Check to see if it matches any module parameter */8155		for (i = 0; i < lpfc_enable_nvmet_cnt; i++) {8156			if (wwn == lpfc_enable_nvmet[i]) {8157#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))8158				if (lpfc_nvmet_mem_alloc(phba))8159					break;8160 8161				phba->nvmet_support = 1; /* a match */8162 8163				lpfc_printf_log(phba, KERN_ERR,8164						LOG_TRACE_EVENT,8165						"6017 NVME Target %016llx\n",8166						wwn);8167#else8168				lpfc_printf_log(phba, KERN_ERR,8169						LOG_TRACE_EVENT,8170						"6021 Can't enable NVME Target."8171						" NVME_TARGET_FC infrastructure"8172						" is not in kernel\n");8173#endif8174				/* Not supported for NVMET */8175				phba->cfg_xri_rebalancing = 0;8176				if (phba->irq_chann_mode == NHT_MODE) {8177					phba->cfg_irq_chann =8178						phba->sli4_hba.num_present_cpu;8179					phba->cfg_hdw_queue =8180						phba->sli4_hba.num_present_cpu;8181					phba->irq_chann_mode = NORMAL_MODE;8182				}8183				break;8184			}8185		}8186	}8187 8188	lpfc_nvme_mod_param_dep(phba);8189 8190	/*8191	 * Get sli4 parameters that override parameters from Port capabilities.8192	 * If this call fails, it isn't critical unless the SLI4 parameters come8193	 * back in conflict.8194	 */8195	rc = lpfc_get_sli4_parameters(phba, mboxq);8196	if (rc) {8197		if_type = bf_get(lpfc_sli_intf_if_type,8198				 &phba->sli4_hba.sli_intf);8199		if_fam = bf_get(lpfc_sli_intf_sli_family,8200				&phba->sli4_hba.sli_intf);8201		if (phba->sli4_hba.extents_in_use &&8202		    phba->sli4_hba.rpi_hdrs_in_use) {8203			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8204					"2999 Unsupported SLI4 Parameters "8205					"Extents and RPI headers enabled.\n");8206			if (if_type == LPFC_SLI_INTF_IF_TYPE_0 &&8207			    if_fam ==  LPFC_SLI_INTF_FAMILY_BE2) {8208				mempool_free(mboxq, phba->mbox_mem_pool);8209				rc = -EIO;8210				goto out_free_bsmbx;8211			}8212		}8213		if (!(if_type == LPFC_SLI_INTF_IF_TYPE_0 &&8214		      if_fam == LPFC_SLI_INTF_FAMILY_BE2)) {8215			mempool_free(mboxq, phba->mbox_mem_pool);8216			rc = -EIO;8217			goto out_free_bsmbx;8218		}8219	}8220 8221	/*8222	 * 1 for cmd, 1 for rsp, NVME adds an extra one8223	 * for boundary conditions in its max_sgl_segment template.8224	 */8225	extra = 2;8226	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)8227		extra++;8228 8229	/*8230	 * It doesn't matter what family our adapter is in, we are8231	 * limited to 2 Pages, 512 SGEs, for our SGL.8232	 * There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp8233	 */8234	max_buf_size = (2 * SLI4_PAGE_SIZE);8235 8236	/*8237	 * Since lpfc_sg_seg_cnt is module param, the sg_dma_buf_size8238	 * used to create the sg_dma_buf_pool must be calculated.8239	 */8240	if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {8241		/* Both cfg_enable_bg and cfg_external_dif code paths */8242 8243		/*8244		 * The scsi_buf for a T10-DIF I/O holds the FCP cmnd,8245		 * the FCP rsp, and a SGE. Sice we have no control8246		 * over how many protection segments the SCSI Layer8247		 * will hand us (ie: there could be one for every block8248		 * in the IO), just allocate enough SGEs to accomidate8249		 * our max amount and we need to limit lpfc_sg_seg_cnt8250		 * to minimize the risk of running out.8251		 */8252		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd32) +8253				sizeof(struct fcp_rsp) + max_buf_size;8254 8255		/* Total SGEs for scsi_sg_list and scsi_sg_prot_list */8256		phba->cfg_total_seg_cnt = LPFC_MAX_SGL_SEG_CNT;8257 8258		/*8259		 * If supporting DIF, reduce the seg count for scsi to8260		 * allow room for the DIF sges.8261		 */8262		if (phba->cfg_enable_bg &&8263		    phba->cfg_sg_seg_cnt > LPFC_MAX_BG_SLI4_SEG_CNT_DIF)8264			phba->cfg_scsi_seg_cnt = LPFC_MAX_BG_SLI4_SEG_CNT_DIF;8265		else8266			phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;8267 8268	} else {8269		/*8270		 * The scsi_buf for a regular I/O holds the FCP cmnd,8271		 * the FCP rsp, a SGE for each, and a SGE for up to8272		 * cfg_sg_seg_cnt data segments.8273		 */8274		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd32) +8275				sizeof(struct fcp_rsp) +8276				((phba->cfg_sg_seg_cnt + extra) *8277				sizeof(struct sli4_sge));8278 8279		/* Total SGEs for scsi_sg_list */8280		phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + extra;8281		phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;8282 8283		/*8284		 * NOTE: if (phba->cfg_sg_seg_cnt + extra) <= 256 we only8285		 * need to post 1 page for the SGL.8286		 */8287	}8288 8289	if (phba->cfg_xpsgl && !phba->nvmet_support)8290		phba->cfg_sg_dma_buf_size = LPFC_DEFAULT_XPSGL_SIZE;8291	else if (phba->cfg_sg_dma_buf_size  <= LPFC_MIN_SG_SLI4_BUF_SZ)8292		phba->cfg_sg_dma_buf_size = LPFC_MIN_SG_SLI4_BUF_SZ;8293	else8294		phba->cfg_sg_dma_buf_size =8295				SLI4_PAGE_ALIGN(phba->cfg_sg_dma_buf_size);8296 8297	phba->border_sge_num = phba->cfg_sg_dma_buf_size /8298			       sizeof(struct sli4_sge);8299 8300	/* Limit to LPFC_MAX_NVME_SEG_CNT for NVME. */8301	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {8302		if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {8303			lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,8304					"6300 Reducing NVME sg segment "8305					"cnt to %d\n",8306					LPFC_MAX_NVME_SEG_CNT);8307			phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;8308		} else8309			phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;8310	}8311 8312	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,8313			"9087 sg_seg_cnt:%d dmabuf_size:%d "8314			"total:%d scsi:%d nvme:%d\n",8315			phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,8316			phba->cfg_total_seg_cnt,  phba->cfg_scsi_seg_cnt,8317			phba->cfg_nvme_seg_cnt);8318 8319	if (phba->cfg_sg_dma_buf_size < SLI4_PAGE_SIZE)8320		i = phba->cfg_sg_dma_buf_size;8321	else8322		i = SLI4_PAGE_SIZE;8323 8324	phba->lpfc_sg_dma_buf_pool =8325			dma_pool_create("lpfc_sg_dma_buf_pool",8326					&phba->pcidev->dev,8327					phba->cfg_sg_dma_buf_size,8328					i, 0);8329	if (!phba->lpfc_sg_dma_buf_pool) {8330		rc = -ENOMEM;8331		goto out_free_bsmbx;8332	}8333 8334	phba->lpfc_cmd_rsp_buf_pool =8335			dma_pool_create("lpfc_cmd_rsp_buf_pool",8336					&phba->pcidev->dev,8337					sizeof(struct fcp_cmnd32) +8338					sizeof(struct fcp_rsp),8339					i, 0);8340	if (!phba->lpfc_cmd_rsp_buf_pool) {8341		rc = -ENOMEM;8342		goto out_free_sg_dma_buf;8343	}8344 8345	mempool_free(mboxq, phba->mbox_mem_pool);8346 8347	/* Verify OAS is supported */8348	lpfc_sli4_oas_verify(phba);8349 8350	/* Verify RAS support on adapter */8351	lpfc_sli4_ras_init(phba);8352 8353	/* Verify all the SLI4 queues */8354	rc = lpfc_sli4_queue_verify(phba);8355	if (rc)8356		goto out_free_cmd_rsp_buf;8357 8358	/* Create driver internal CQE event pool */8359	rc = lpfc_sli4_cq_event_pool_create(phba);8360	if (rc)8361		goto out_free_cmd_rsp_buf;8362 8363	/* Initialize sgl lists per host */8364	lpfc_init_sgl_list(phba);8365 8366	/* Allocate and initialize active sgl array */8367	rc = lpfc_init_active_sgl_array(phba);8368	if (rc) {8369		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8370				"1430 Failed to initialize sgl list.\n");8371		goto out_destroy_cq_event_pool;8372	}8373	rc = lpfc_sli4_init_rpi_hdrs(phba);8374	if (rc) {8375		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8376				"1432 Failed to initialize rpi headers.\n");8377		goto out_free_active_sgl;8378	}8379 8380	/* Allocate eligible FCF bmask memory for FCF roundrobin failover */8381	longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;8382	phba->fcf.fcf_rr_bmask = kcalloc(longs, sizeof(unsigned long),8383					 GFP_KERNEL);8384	if (!phba->fcf.fcf_rr_bmask) {8385		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8386				"2759 Failed allocate memory for FCF round "8387				"robin failover bmask\n");8388		rc = -ENOMEM;8389		goto out_remove_rpi_hdrs;8390	}8391 8392	phba->sli4_hba.hba_eq_hdl = kcalloc(phba->cfg_irq_chann,8393					    sizeof(struct lpfc_hba_eq_hdl),8394					    GFP_KERNEL);8395	if (!phba->sli4_hba.hba_eq_hdl) {8396		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8397				"2572 Failed allocate memory for "8398				"fast-path per-EQ handle array\n");8399		rc = -ENOMEM;8400		goto out_free_fcf_rr_bmask;8401	}8402 8403	phba->sli4_hba.cpu_map = kcalloc(phba->sli4_hba.num_possible_cpu,8404					sizeof(struct lpfc_vector_map_info),8405					GFP_KERNEL);8406	if (!phba->sli4_hba.cpu_map) {8407		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8408				"3327 Failed allocate memory for msi-x "8409				"interrupt vector mapping\n");8410		rc = -ENOMEM;8411		goto out_free_hba_eq_hdl;8412	}8413 8414	phba->sli4_hba.eq_info = alloc_percpu(struct lpfc_eq_intr_info);8415	if (!phba->sli4_hba.eq_info) {8416		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8417				"3321 Failed allocation for per_cpu stats\n");8418		rc = -ENOMEM;8419		goto out_free_hba_cpu_map;8420	}8421 8422	phba->sli4_hba.idle_stat = kcalloc(phba->sli4_hba.num_possible_cpu,8423					   sizeof(*phba->sli4_hba.idle_stat),8424					   GFP_KERNEL);8425	if (!phba->sli4_hba.idle_stat) {8426		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8427				"3390 Failed allocation for idle_stat\n");8428		rc = -ENOMEM;8429		goto out_free_hba_eq_info;8430	}8431 8432#ifdef CONFIG_SCSI_LPFC_DEBUG_FS8433	phba->sli4_hba.c_stat = alloc_percpu(struct lpfc_hdwq_stat);8434	if (!phba->sli4_hba.c_stat) {8435		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8436				"3332 Failed allocating per cpu hdwq stats\n");8437		rc = -ENOMEM;8438		goto out_free_hba_idle_stat;8439	}8440#endif8441 8442	phba->cmf_stat = alloc_percpu(struct lpfc_cgn_stat);8443	if (!phba->cmf_stat) {8444		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8445				"3331 Failed allocating per cpu cgn stats\n");8446		rc = -ENOMEM;8447		goto out_free_hba_hdwq_info;8448	}8449 8450	/*8451	 * Enable sr-iov virtual functions if supported and configured8452	 * through the module parameter.8453	 */8454	if (phba->cfg_sriov_nr_virtfn > 0) {8455		rc = lpfc_sli_probe_sriov_nr_virtfn(phba,8456						 phba->cfg_sriov_nr_virtfn);8457		if (rc) {8458			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,8459					"3020 Requested number of SR-IOV "8460					"virtual functions (%d) is not "8461					"supported\n",8462					phba->cfg_sriov_nr_virtfn);8463			phba->cfg_sriov_nr_virtfn = 0;8464		}8465	}8466 8467	return 0;8468 8469out_free_hba_hdwq_info:8470#ifdef CONFIG_SCSI_LPFC_DEBUG_FS8471	free_percpu(phba->sli4_hba.c_stat);8472out_free_hba_idle_stat:8473#endif8474	kfree(phba->sli4_hba.idle_stat);8475out_free_hba_eq_info:8476	free_percpu(phba->sli4_hba.eq_info);8477out_free_hba_cpu_map:8478	kfree(phba->sli4_hba.cpu_map);8479out_free_hba_eq_hdl:8480	kfree(phba->sli4_hba.hba_eq_hdl);8481out_free_fcf_rr_bmask:8482	kfree(phba->fcf.fcf_rr_bmask);8483out_remove_rpi_hdrs:8484	lpfc_sli4_remove_rpi_hdrs(phba);8485out_free_active_sgl:8486	lpfc_free_active_sgl(phba);8487out_destroy_cq_event_pool:8488	lpfc_sli4_cq_event_pool_destroy(phba);8489out_free_cmd_rsp_buf:8490	dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool);8491	phba->lpfc_cmd_rsp_buf_pool = NULL;8492out_free_sg_dma_buf:8493	dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);8494	phba->lpfc_sg_dma_buf_pool = NULL;8495out_free_bsmbx:8496	lpfc_destroy_bootstrap_mbox(phba);8497out_free_mem:8498	lpfc_mem_free(phba);8499out_destroy_workqueue:8500	destroy_workqueue(phba->wq);8501	phba->wq = NULL;8502	return rc;8503}8504 8505/**8506 * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev8507 * @phba: pointer to lpfc hba data structure.8508 *8509 * This routine is invoked to unset the driver internal resources set up8510 * specific for supporting the SLI-4 HBA device it attached to.8511 **/8512static void8513lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)8514{8515	struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;8516 8517	free_percpu(phba->sli4_hba.eq_info);8518#ifdef CONFIG_SCSI_LPFC_DEBUG_FS8519	free_percpu(phba->sli4_hba.c_stat);8520#endif8521	free_percpu(phba->cmf_stat);8522	kfree(phba->sli4_hba.idle_stat);8523 8524	/* Free memory allocated for msi-x interrupt vector to CPU mapping */8525	kfree(phba->sli4_hba.cpu_map);8526	phba->sli4_hba.num_possible_cpu = 0;8527	phba->sli4_hba.num_present_cpu = 0;8528	phba->sli4_hba.curr_disp_cpu = 0;8529	cpumask_clear(&phba->sli4_hba.irq_aff_mask);8530 8531	/* Free memory allocated for fast-path work queue handles */8532	kfree(phba->sli4_hba.hba_eq_hdl);8533 8534	/* Free the allocated rpi headers. */8535	lpfc_sli4_remove_rpi_hdrs(phba);8536	lpfc_sli4_remove_rpis(phba);8537 8538	/* Free eligible FCF index bmask */8539	kfree(phba->fcf.fcf_rr_bmask);8540 8541	/* Free the ELS sgl list */8542	lpfc_free_active_sgl(phba);8543	lpfc_free_els_sgl_list(phba);8544	lpfc_free_nvmet_sgl_list(phba);8545 8546	/* Free the completion queue EQ event pool */8547	lpfc_sli4_cq_event_release_all(phba);8548	lpfc_sli4_cq_event_pool_destroy(phba);8549 8550	/* Release resource identifiers. */8551	lpfc_sli4_dealloc_resource_identifiers(phba);8552 8553	/* Free the bsmbx region. */8554	lpfc_destroy_bootstrap_mbox(phba);8555 8556	/* Free the SLI Layer memory with SLI4 HBAs */8557	lpfc_mem_free_all(phba);8558 8559	/* Free the current connect table */8560	list_for_each_entry_safe(conn_entry, next_conn_entry,8561		&phba->fcf_conn_rec_list, list) {8562		list_del_init(&conn_entry->list);8563		kfree(conn_entry);8564	}8565 8566	return;8567}8568 8569/**8570 * lpfc_init_api_table_setup - Set up init api function jump table8571 * @phba: The hba struct for which this call is being executed.8572 * @dev_grp: The HBA PCI-Device group number.8573 *8574 * This routine sets up the device INIT interface API function jump table8575 * in @phba struct.8576 *8577 * Returns: 0 - success, -ENODEV - failure.8578 **/8579int8580lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)8581{8582	phba->lpfc_hba_init_link = lpfc_hba_init_link;8583	phba->lpfc_hba_down_link = lpfc_hba_down_link;8584	phba->lpfc_selective_reset = lpfc_selective_reset;8585	switch (dev_grp) {8586	case LPFC_PCI_DEV_LP:8587		phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;8588		phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;8589		phba->lpfc_stop_port = lpfc_stop_port_s3;8590		break;8591	case LPFC_PCI_DEV_OC:8592		phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;8593		phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;8594		phba->lpfc_stop_port = lpfc_stop_port_s4;8595		break;8596	default:8597		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,8598				"1431 Invalid HBA PCI-device group: 0x%x\n",8599				dev_grp);8600		return -ENODEV;8601	}8602	return 0;8603}8604 8605/**8606 * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.8607 * @phba: pointer to lpfc hba data structure.8608 *8609 * This routine is invoked to set up the driver internal resources after the8610 * device specific resource setup to support the HBA device it attached to.8611 *8612 * Return codes8613 * 	0 - successful8614 * 	other values - error8615 **/8616static int8617lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)8618{8619	int error;8620 8621	/* Startup the kernel thread for this host adapter. */8622	phba->worker_thread = kthread_run(lpfc_do_work, phba,8623					  "lpfc_worker_%d", phba->brd_no);8624	if (IS_ERR(phba->worker_thread)) {8625		error = PTR_ERR(phba->worker_thread);8626		return error;8627	}8628 8629	return 0;8630}8631 8632/**8633 * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.8634 * @phba: pointer to lpfc hba data structure.8635 *8636 * This routine is invoked to unset the driver internal resources set up after8637 * the device specific resource setup for supporting the HBA device it8638 * attached to.8639 **/8640static void8641lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)8642{8643	if (phba->wq) {8644		destroy_workqueue(phba->wq);8645		phba->wq = NULL;8646	}8647 8648	/* Stop kernel worker thread */8649	if (phba->worker_thread)8650		kthread_stop(phba->worker_thread);8651}8652 8653/**8654 * lpfc_free_iocb_list - Free iocb list.8655 * @phba: pointer to lpfc hba data structure.8656 *8657 * This routine is invoked to free the driver's IOCB list and memory.8658 **/8659void8660lpfc_free_iocb_list(struct lpfc_hba *phba)8661{8662	struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;8663 8664	spin_lock_irq(&phba->hbalock);8665	list_for_each_entry_safe(iocbq_entry, iocbq_next,8666				 &phba->lpfc_iocb_list, list) {8667		list_del(&iocbq_entry->list);8668		kfree(iocbq_entry);8669		phba->total_iocbq_bufs--;8670	}8671	spin_unlock_irq(&phba->hbalock);8672 8673	return;8674}8675 8676/**8677 * lpfc_init_iocb_list - Allocate and initialize iocb list.8678 * @phba: pointer to lpfc hba data structure.8679 * @iocb_count: number of requested iocbs8680 *8681 * This routine is invoked to allocate and initizlize the driver's IOCB8682 * list and set up the IOCB tag array accordingly.8683 *8684 * Return codes8685 *	0 - successful8686 *	other values - error8687 **/8688int8689lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)8690{8691	struct lpfc_iocbq *iocbq_entry = NULL;8692	uint16_t iotag;8693	int i;8694 8695	/* Initialize and populate the iocb list per host.  */8696	INIT_LIST_HEAD(&phba->lpfc_iocb_list);8697	for (i = 0; i < iocb_count; i++) {8698		iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);8699		if (iocbq_entry == NULL) {8700			printk(KERN_ERR "%s: only allocated %d iocbs of "8701				"expected %d count. Unloading driver.\n",8702				__func__, i, iocb_count);8703			goto out_free_iocbq;8704		}8705 8706		iotag = lpfc_sli_next_iotag(phba, iocbq_entry);8707		if (iotag == 0) {8708			kfree(iocbq_entry);8709			printk(KERN_ERR "%s: failed to allocate IOTAG. "8710				"Unloading driver.\n", __func__);8711			goto out_free_iocbq;8712		}8713		iocbq_entry->sli4_lxritag = NO_XRI;8714		iocbq_entry->sli4_xritag = NO_XRI;8715 8716		spin_lock_irq(&phba->hbalock);8717		list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);8718		phba->total_iocbq_bufs++;8719		spin_unlock_irq(&phba->hbalock);8720	}8721 8722	return 0;8723 8724out_free_iocbq:8725	lpfc_free_iocb_list(phba);8726 8727	return -ENOMEM;8728}8729 8730/**8731 * lpfc_free_sgl_list - Free a given sgl list.8732 * @phba: pointer to lpfc hba data structure.8733 * @sglq_list: pointer to the head of sgl list.8734 *8735 * This routine is invoked to free a give sgl list and memory.8736 **/8737void8738lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list)8739{8740	struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;8741 8742	list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) {8743		list_del(&sglq_entry->list);8744		lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);8745		kfree(sglq_entry);8746	}8747}8748 8749/**8750 * lpfc_free_els_sgl_list - Free els sgl list.8751 * @phba: pointer to lpfc hba data structure.8752 *8753 * This routine is invoked to free the driver's els sgl list and memory.8754 **/8755static void8756lpfc_free_els_sgl_list(struct lpfc_hba *phba)8757{8758	LIST_HEAD(sglq_list);8759 8760	/* Retrieve all els sgls from driver list */8761	spin_lock_irq(&phba->sli4_hba.sgl_list_lock);8762	list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list, &sglq_list);8763	spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);8764 8765	/* Now free the sgl list */8766	lpfc_free_sgl_list(phba, &sglq_list);8767}8768 8769/**8770 * lpfc_free_nvmet_sgl_list - Free nvmet sgl list.8771 * @phba: pointer to lpfc hba data structure.8772 *8773 * This routine is invoked to free the driver's nvmet sgl list and memory.8774 **/8775static void8776lpfc_free_nvmet_sgl_list(struct lpfc_hba *phba)8777{8778	struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;8779	LIST_HEAD(sglq_list);8780 8781	/* Retrieve all nvmet sgls from driver list */8782	spin_lock_irq(&phba->hbalock);8783	spin_lock(&phba->sli4_hba.sgl_list_lock);8784	list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list, &sglq_list);8785	spin_unlock(&phba->sli4_hba.sgl_list_lock);8786	spin_unlock_irq(&phba->hbalock);8787 8788	/* Now free the sgl list */8789	list_for_each_entry_safe(sglq_entry, sglq_next, &sglq_list, list) {8790		list_del(&sglq_entry->list);8791		lpfc_nvmet_buf_free(phba, sglq_entry->virt, sglq_entry->phys);8792		kfree(sglq_entry);8793	}8794 8795	/* Update the nvmet_xri_cnt to reflect no current sgls.8796	 * The next initialization cycle sets the count and allocates8797	 * the sgls over again.8798	 */8799	phba->sli4_hba.nvmet_xri_cnt = 0;8800}8801 8802/**8803 * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.8804 * @phba: pointer to lpfc hba data structure.8805 *8806 * This routine is invoked to allocate the driver's active sgl memory.8807 * This array will hold the sglq_entry's for active IOs.8808 **/8809static int8810lpfc_init_active_sgl_array(struct lpfc_hba *phba)8811{8812	int size;8813	size = sizeof(struct lpfc_sglq *);8814	size *= phba->sli4_hba.max_cfg_param.max_xri;8815 8816	phba->sli4_hba.lpfc_sglq_active_list =8817		kzalloc(size, GFP_KERNEL);8818	if (!phba->sli4_hba.lpfc_sglq_active_list)8819		return -ENOMEM;8820	return 0;8821}8822 8823/**8824 * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.8825 * @phba: pointer to lpfc hba data structure.8826 *8827 * This routine is invoked to walk through the array of active sglq entries8828 * and free all of the resources.8829 * This is just a place holder for now.8830 **/8831static void8832lpfc_free_active_sgl(struct lpfc_hba *phba)8833{8834	kfree(phba->sli4_hba.lpfc_sglq_active_list);8835}8836 8837/**8838 * lpfc_init_sgl_list - Allocate and initialize sgl list.8839 * @phba: pointer to lpfc hba data structure.8840 *8841 * This routine is invoked to allocate and initizlize the driver's sgl8842 * list and set up the sgl xritag tag array accordingly.8843 *8844 **/8845static void8846lpfc_init_sgl_list(struct lpfc_hba *phba)8847{8848	/* Initialize and populate the sglq list per host/VF. */8849	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_els_sgl_list);8850	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);8851	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_sgl_list);8852	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);8853 8854	/* els xri-sgl book keeping */8855	phba->sli4_hba.els_xri_cnt = 0;8856 8857	/* nvme xri-buffer book keeping */8858	phba->sli4_hba.io_xri_cnt = 0;8859}8860 8861/**8862 * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port8863 * @phba: pointer to lpfc hba data structure.8864 *8865 * This routine is invoked to post rpi header templates to the8866 * port for those SLI4 ports that do not support extents.  This routine8867 * posts a PAGE_SIZE memory region to the port to hold up to8868 * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine8869 * and should be called only when interrupts are disabled.8870 *8871 * Return codes8872 * 	0 - successful8873 *	-ERROR - otherwise.8874 **/8875int8876lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)8877{8878	int rc = 0;8879	struct lpfc_rpi_hdr *rpi_hdr;8880 8881	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);8882	if (!phba->sli4_hba.rpi_hdrs_in_use)8883		return rc;8884	if (phba->sli4_hba.extents_in_use)8885		return -EIO;8886 8887	rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);8888	if (!rpi_hdr) {8889		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,8890				"0391 Error during rpi post operation\n");8891		lpfc_sli4_remove_rpis(phba);8892		rc = -ENODEV;8893	}8894 8895	return rc;8896}8897 8898/**8899 * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region8900 * @phba: pointer to lpfc hba data structure.8901 *8902 * This routine is invoked to allocate a single 4KB memory region to8903 * support rpis and stores them in the phba.  This single region8904 * provides support for up to 64 rpis.  The region is used globally8905 * by the device.8906 *8907 * Returns:8908 *   A valid rpi hdr on success.8909 *   A NULL pointer on any failure.8910 **/8911struct lpfc_rpi_hdr *8912lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)8913{8914	uint16_t rpi_limit, curr_rpi_range;8915	struct lpfc_dmabuf *dmabuf;8916	struct lpfc_rpi_hdr *rpi_hdr;8917 8918	/*8919	 * If the SLI4 port supports extents, posting the rpi header isn't8920	 * required.  Set the expected maximum count and let the actual value8921	 * get set when extents are fully allocated.8922	 */8923	if (!phba->sli4_hba.rpi_hdrs_in_use)8924		return NULL;8925	if (phba->sli4_hba.extents_in_use)8926		return NULL;8927 8928	/* The limit on the logical index is just the max_rpi count. */8929	rpi_limit = phba->sli4_hba.max_cfg_param.max_rpi;8930 8931	spin_lock_irq(&phba->hbalock);8932	/*8933	 * Establish the starting RPI in this header block.  The starting8934	 * rpi is normalized to a zero base because the physical rpi is8935	 * port based.8936	 */8937	curr_rpi_range = phba->sli4_hba.next_rpi;8938	spin_unlock_irq(&phba->hbalock);8939 8940	/* Reached full RPI range */8941	if (curr_rpi_range == rpi_limit)8942		return NULL;8943 8944	/*8945	 * First allocate the protocol header region for the port.  The8946	 * port expects a 4KB DMA-mapped memory region that is 4K aligned.8947	 */8948	dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);8949	if (!dmabuf)8950		return NULL;8951 8952	dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,8953					  LPFC_HDR_TEMPLATE_SIZE,8954					  &dmabuf->phys, GFP_KERNEL);8955	if (!dmabuf->virt) {8956		rpi_hdr = NULL;8957		goto err_free_dmabuf;8958	}8959 8960	if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {8961		rpi_hdr = NULL;8962		goto err_free_coherent;8963	}8964 8965	/* Save the rpi header data for cleanup later. */8966	rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);8967	if (!rpi_hdr)8968		goto err_free_coherent;8969 8970	rpi_hdr->dmabuf = dmabuf;8971	rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;8972	rpi_hdr->page_count = 1;8973	spin_lock_irq(&phba->hbalock);8974 8975	/* The rpi_hdr stores the logical index only. */8976	rpi_hdr->start_rpi = curr_rpi_range;8977	rpi_hdr->next_rpi = phba->sli4_hba.next_rpi + LPFC_RPI_HDR_COUNT;8978	list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);8979 8980	spin_unlock_irq(&phba->hbalock);8981	return rpi_hdr;8982 8983 err_free_coherent:8984	dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,8985			  dmabuf->virt, dmabuf->phys);8986 err_free_dmabuf:8987	kfree(dmabuf);8988	return NULL;8989}8990 8991/**8992 * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions8993 * @phba: pointer to lpfc hba data structure.8994 *8995 * This routine is invoked to remove all memory resources allocated8996 * to support rpis for SLI4 ports not supporting extents. This routine8997 * presumes the caller has released all rpis consumed by fabric or port8998 * logins and is prepared to have the header pages removed.8999 **/9000void9001lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)9002{9003	struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;9004 9005	if (!phba->sli4_hba.rpi_hdrs_in_use)9006		goto exit;9007 9008	list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,9009				 &phba->sli4_hba.lpfc_rpi_hdr_list, list) {9010		list_del(&rpi_hdr->list);9011		dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,9012				  rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);9013		kfree(rpi_hdr->dmabuf);9014		kfree(rpi_hdr);9015	}9016 exit:9017	/* There are no rpis available to the port now. */9018	phba->sli4_hba.next_rpi = 0;9019}9020 9021/**9022 * lpfc_hba_alloc - Allocate driver hba data structure for a device.9023 * @pdev: pointer to pci device data structure.9024 *9025 * This routine is invoked to allocate the driver hba data structure for an9026 * HBA device. If the allocation is successful, the phba reference to the9027 * PCI device data structure is set.9028 *9029 * Return codes9030 *      pointer to @phba - successful9031 *      NULL - error9032 **/9033static struct lpfc_hba *9034lpfc_hba_alloc(struct pci_dev *pdev)9035{9036	struct lpfc_hba *phba;9037 9038	/* Allocate memory for HBA structure */9039	phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);9040	if (!phba) {9041		dev_err(&pdev->dev, "failed to allocate hba struct\n");9042		return NULL;9043	}9044 9045	/* Set reference to PCI device in HBA structure */9046	phba->pcidev = pdev;9047 9048	/* Assign an unused board number */9049	phba->brd_no = lpfc_get_instance();9050	if (phba->brd_no < 0) {9051		kfree(phba);9052		return NULL;9053	}9054	phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;9055 9056	spin_lock_init(&phba->ct_ev_lock);9057	INIT_LIST_HEAD(&phba->ct_ev_waiters);9058 9059	return phba;9060}9061 9062/**9063 * lpfc_hba_free - Free driver hba data structure with a device.9064 * @phba: pointer to lpfc hba data structure.9065 *9066 * This routine is invoked to free the driver hba data structure with an9067 * HBA device.9068 **/9069static void9070lpfc_hba_free(struct lpfc_hba *phba)9071{9072	if (phba->sli_rev == LPFC_SLI_REV4)9073		kfree(phba->sli4_hba.hdwq);9074 9075	/* Release the driver assigned board number */9076	idr_remove(&lpfc_hba_index, phba->brd_no);9077 9078	/* Free memory allocated with sli3 rings */9079	kfree(phba->sli.sli3_ring);9080	phba->sli.sli3_ring = NULL;9081 9082	kfree(phba);9083	return;9084}9085 9086/**9087 * lpfc_setup_fdmi_mask - Setup initial FDMI mask for HBA and Port attributes9088 * @vport: pointer to lpfc vport data structure.9089 *9090 * This routine is will setup initial FDMI attribute masks for9091 * FDMI2 or SmartSAN depending on module parameters. The driver will attempt9092 * to get these attributes first before falling back, the attribute9093 * fallback hierarchy is SmartSAN -> FDMI2 -> FMDI19094 **/9095void9096lpfc_setup_fdmi_mask(struct lpfc_vport *vport)9097{9098	struct lpfc_hba *phba = vport->phba;9099 9100	set_bit(FC_ALLOW_FDMI, &vport->load_flag);9101	if (phba->cfg_enable_SmartSAN ||9102	    phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT) {9103		/* Setup appropriate attribute masks */9104		vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;9105		if (phba->cfg_enable_SmartSAN)9106			vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;9107		else9108			vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;9109	}9110 9111	lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,9112			"6077 Setup FDMI mask: hba x%x port x%x\n",9113			vport->fdmi_hba_mask, vport->fdmi_port_mask);9114}9115 9116/**9117 * lpfc_create_shost - Create hba physical port with associated scsi host.9118 * @phba: pointer to lpfc hba data structure.9119 *9120 * This routine is invoked to create HBA physical port and associate a SCSI9121 * host with it.9122 *9123 * Return codes9124 *      0 - successful9125 *      other values - error9126 **/9127static int9128lpfc_create_shost(struct lpfc_hba *phba)9129{9130	struct lpfc_vport *vport;9131	struct Scsi_Host  *shost;9132 9133	/* Initialize HBA FC structure */9134	phba->fc_edtov = FF_DEF_EDTOV;9135	phba->fc_ratov = FF_DEF_RATOV;9136	phba->fc_altov = FF_DEF_ALTOV;9137	phba->fc_arbtov = FF_DEF_ARBTOV;9138 9139	atomic_set(&phba->sdev_cnt, 0);9140	vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);9141	if (!vport)9142		return -ENODEV;9143 9144	shost = lpfc_shost_from_vport(vport);9145	phba->pport = vport;9146 9147	if (phba->nvmet_support) {9148		/* Only 1 vport (pport) will support NVME target */9149		phba->targetport = NULL;9150		phba->cfg_enable_fc4_type = LPFC_ENABLE_NVME;9151		lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME_DISC,9152				"6076 NVME Target Found\n");9153	}9154 9155	lpfc_debugfs_initialize(vport);9156	/* Put reference to SCSI host to driver's device private data */9157	pci_set_drvdata(phba->pcidev, shost);9158 9159	lpfc_setup_fdmi_mask(vport);9160 9161	/*9162	 * At this point we are fully registered with PSA. In addition,9163	 * any initial discovery should be completed.9164	 */9165	return 0;9166}9167 9168/**9169 * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.9170 * @phba: pointer to lpfc hba data structure.9171 *9172 * This routine is invoked to destroy HBA physical port and the associated9173 * SCSI host.9174 **/9175static void9176lpfc_destroy_shost(struct lpfc_hba *phba)9177{9178	struct lpfc_vport *vport = phba->pport;9179 9180	/* Destroy physical port that associated with the SCSI host */9181	destroy_port(vport);9182 9183	return;9184}9185 9186/**9187 * lpfc_setup_bg - Setup Block guard structures and debug areas.9188 * @phba: pointer to lpfc hba data structure.9189 * @shost: the shost to be used to detect Block guard settings.9190 *9191 * This routine sets up the local Block guard protocol settings for @shost.9192 * This routine also allocates memory for debugging bg buffers.9193 **/9194static void9195lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)9196{9197	uint32_t old_mask;9198	uint32_t old_guard;9199 9200	if (phba->cfg_prot_mask && phba->cfg_prot_guard) {9201		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,9202				"1478 Registering BlockGuard with the "9203				"SCSI layer\n");9204 9205		old_mask = phba->cfg_prot_mask;9206		old_guard = phba->cfg_prot_guard;9207 9208		/* Only allow supported values */9209		phba->cfg_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |9210			SHOST_DIX_TYPE0_PROTECTION |9211			SHOST_DIX_TYPE1_PROTECTION);9212		phba->cfg_prot_guard &= (SHOST_DIX_GUARD_IP |9213					 SHOST_DIX_GUARD_CRC);9214 9215		/* DIF Type 1 protection for profiles AST1/C1 is end to end */9216		if (phba->cfg_prot_mask == SHOST_DIX_TYPE1_PROTECTION)9217			phba->cfg_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;9218 9219		if (phba->cfg_prot_mask && phba->cfg_prot_guard) {9220			if ((old_mask != phba->cfg_prot_mask) ||9221				(old_guard != phba->cfg_prot_guard))9222				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,9223					"1475 Registering BlockGuard with the "9224					"SCSI layer: mask %d  guard %d\n",9225					phba->cfg_prot_mask,9226					phba->cfg_prot_guard);9227 9228			scsi_host_set_prot(shost, phba->cfg_prot_mask);9229			scsi_host_set_guard(shost, phba->cfg_prot_guard);9230		} else9231			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,9232				"1479 Not Registering BlockGuard with the SCSI "9233				"layer, Bad protection parameters: %d %d\n",9234				old_mask, old_guard);9235	}9236}9237 9238/**9239 * lpfc_post_init_setup - Perform necessary device post initialization setup.9240 * @phba: pointer to lpfc hba data structure.9241 *9242 * This routine is invoked to perform all the necessary post initialization9243 * setup for the device.9244 **/9245static void9246lpfc_post_init_setup(struct lpfc_hba *phba)9247{9248	struct Scsi_Host  *shost;9249	struct lpfc_adapter_event_header adapter_event;9250 9251	/* Get the default values for Model Name and Description */9252	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);9253 9254	/*9255	 * hba setup may have changed the hba_queue_depth so we need to9256	 * adjust the value of can_queue.9257	 */9258	shost = pci_get_drvdata(phba->pcidev);9259	shost->can_queue = phba->cfg_hba_queue_depth - 10;9260 9261	lpfc_host_attrib_init(shost);9262 9263	if (phba->cfg_poll & DISABLE_FCP_RING_INT) {9264		spin_lock_irq(shost->host_lock);9265		lpfc_poll_start_timer(phba);9266		spin_unlock_irq(shost->host_lock);9267	}9268 9269	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,9270			"0428 Perform SCSI scan\n");9271	/* Send board arrival event to upper layer */9272	adapter_event.event_type = FC_REG_ADAPTER_EVENT;9273	adapter_event.subcategory = LPFC_EVENT_ARRIVAL;9274	fc_host_post_vendor_event(shost, fc_get_event_number(),9275				  sizeof(adapter_event),9276				  (char *) &adapter_event,9277				  LPFC_NL_VENDOR_ID);9278	return;9279}9280 9281/**9282 * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.9283 * @phba: pointer to lpfc hba data structure.9284 *9285 * This routine is invoked to set up the PCI device memory space for device9286 * with SLI-3 interface spec.9287 *9288 * Return codes9289 * 	0 - successful9290 * 	other values - error9291 **/9292static int9293lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)9294{9295	struct pci_dev *pdev = phba->pcidev;9296	unsigned long bar0map_len, bar2map_len;9297	int i, hbq_count;9298	void *ptr;9299	int error;9300 9301	if (!pdev)9302		return -ENODEV;9303 9304	/* Set the device DMA mask size */9305	error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));9306	if (error)9307		error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));9308	if (error)9309		return error;9310	error = -ENODEV;9311 9312	/* Get the bus address of Bar0 and Bar2 and the number of bytes9313	 * required by each mapping.9314	 */9315	phba->pci_bar0_map = pci_resource_start(pdev, 0);9316	bar0map_len = pci_resource_len(pdev, 0);9317 9318	phba->pci_bar2_map = pci_resource_start(pdev, 2);9319	bar2map_len = pci_resource_len(pdev, 2);9320 9321	/* Map HBA SLIM to a kernel virtual address. */9322	phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);9323	if (!phba->slim_memmap_p) {9324		dev_printk(KERN_ERR, &pdev->dev,9325			   "ioremap failed for SLIM memory.\n");9326		goto out;9327	}9328 9329	/* Map HBA Control Registers to a kernel virtual address. */9330	phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);9331	if (!phba->ctrl_regs_memmap_p) {9332		dev_printk(KERN_ERR, &pdev->dev,9333			   "ioremap failed for HBA control registers.\n");9334		goto out_iounmap_slim;9335	}9336 9337	/* Allocate memory for SLI-2 structures */9338	phba->slim2p.virt = dma_alloc_coherent(&pdev->dev, SLI2_SLIM_SIZE,9339					       &phba->slim2p.phys, GFP_KERNEL);9340	if (!phba->slim2p.virt)9341		goto out_iounmap;9342 9343	phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);9344	phba->mbox_ext = (phba->slim2p.virt +9345		offsetof(struct lpfc_sli2_slim, mbx_ext_words));9346	phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));9347	phba->IOCBs = (phba->slim2p.virt +9348		       offsetof(struct lpfc_sli2_slim, IOCBs));9349 9350	phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,9351						 lpfc_sli_hbq_size(),9352						 &phba->hbqslimp.phys,9353						 GFP_KERNEL);9354	if (!phba->hbqslimp.virt)9355		goto out_free_slim;9356 9357	hbq_count = lpfc_sli_hbq_count();9358	ptr = phba->hbqslimp.virt;9359	for (i = 0; i < hbq_count; ++i) {9360		phba->hbqs[i].hbq_virt = ptr;9361		INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);9362		ptr += (lpfc_hbq_defs[i]->entry_count *9363			sizeof(struct lpfc_hbq_entry));9364	}9365	phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;9366	phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;9367 9368	memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());9369 9370	phba->MBslimaddr = phba->slim_memmap_p;9371	phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;9372	phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;9373	phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;9374	phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;9375 9376	return 0;9377 9378out_free_slim:9379	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,9380			  phba->slim2p.virt, phba->slim2p.phys);9381out_iounmap:9382	iounmap(phba->ctrl_regs_memmap_p);9383out_iounmap_slim:9384	iounmap(phba->slim_memmap_p);9385out:9386	return error;9387}9388 9389/**9390 * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.9391 * @phba: pointer to lpfc hba data structure.9392 *9393 * This routine is invoked to unset the PCI device memory space for device9394 * with SLI-3 interface spec.9395 **/9396static void9397lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)9398{9399	struct pci_dev *pdev;9400 9401	/* Obtain PCI device reference */9402	if (!phba->pcidev)9403		return;9404	else9405		pdev = phba->pcidev;9406 9407	/* Free coherent DMA memory allocated */9408	dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),9409			  phba->hbqslimp.virt, phba->hbqslimp.phys);9410	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,9411			  phba->slim2p.virt, phba->slim2p.phys);9412 9413	/* I/O memory unmap */9414	iounmap(phba->ctrl_regs_memmap_p);9415	iounmap(phba->slim_memmap_p);9416 9417	return;9418}9419 9420/**9421 * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status9422 * @phba: pointer to lpfc hba data structure.9423 *9424 * This routine is invoked to wait for SLI4 device Power On Self Test (POST)9425 * done and check status.9426 *9427 * Return 0 if successful, otherwise -ENODEV.9428 **/9429int9430lpfc_sli4_post_status_check(struct lpfc_hba *phba)9431{9432	struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;9433	struct lpfc_register reg_data;9434	int i, port_error = 0;9435	uint32_t if_type;9436 9437	memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));9438	memset(&reg_data, 0, sizeof(reg_data));9439	if (!phba->sli4_hba.PSMPHRregaddr)9440		return -ENODEV;9441 9442	/* Wait up to 30 seconds for the SLI Port POST done and ready */9443	for (i = 0; i < 3000; i++) {9444		if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,9445			&portsmphr_reg.word0) ||9446			(bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {9447			/* Port has a fatal POST error, break out */9448			port_error = -ENODEV;9449			break;9450		}9451		if (LPFC_POST_STAGE_PORT_READY ==9452		    bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))9453			break;9454		msleep(10);9455	}9456 9457	/*9458	 * If there was a port error during POST, then don't proceed with9459	 * other register reads as the data may not be valid.  Just exit.9460	 */9461	if (port_error) {9462		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,9463			"1408 Port Failed POST - portsmphr=0x%x, "9464			"perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "9465			"scr2=x%x, hscratch=x%x, pstatus=x%x\n",9466			portsmphr_reg.word0,9467			bf_get(lpfc_port_smphr_perr, &portsmphr_reg),9468			bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),9469			bf_get(lpfc_port_smphr_nip, &portsmphr_reg),9470			bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),9471			bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),9472			bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),9473			bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),9474			bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));9475	} else {9476		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,9477				"2534 Device Info: SLIFamily=0x%x, "9478				"SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "9479				"SLIHint_2=0x%x, FT=0x%x\n",9480				bf_get(lpfc_sli_intf_sli_family,9481				       &phba->sli4_hba.sli_intf),9482				bf_get(lpfc_sli_intf_slirev,9483				       &phba->sli4_hba.sli_intf),9484				bf_get(lpfc_sli_intf_if_type,9485				       &phba->sli4_hba.sli_intf),9486				bf_get(lpfc_sli_intf_sli_hint1,9487				       &phba->sli4_hba.sli_intf),9488				bf_get(lpfc_sli_intf_sli_hint2,9489				       &phba->sli4_hba.sli_intf),9490				bf_get(lpfc_sli_intf_func_type,9491				       &phba->sli4_hba.sli_intf));9492		/*9493		 * Check for other Port errors during the initialization9494		 * process.  Fail the load if the port did not come up9495		 * correctly.9496		 */9497		if_type = bf_get(lpfc_sli_intf_if_type,9498				 &phba->sli4_hba.sli_intf);9499		switch (if_type) {9500		case LPFC_SLI_INTF_IF_TYPE_0:9501			phba->sli4_hba.ue_mask_lo =9502			      readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);9503			phba->sli4_hba.ue_mask_hi =9504			      readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);9505			uerrlo_reg.word0 =9506			      readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);9507			uerrhi_reg.word0 =9508				readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);9509			if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||9510			    (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {9511				lpfc_printf_log(phba, KERN_ERR,9512						LOG_TRACE_EVENT,9513						"1422 Unrecoverable Error "9514						"Detected during POST "9515						"uerr_lo_reg=0x%x, "9516						"uerr_hi_reg=0x%x, "9517						"ue_mask_lo_reg=0x%x, "9518						"ue_mask_hi_reg=0x%x\n",9519						uerrlo_reg.word0,9520						uerrhi_reg.word0,9521						phba->sli4_hba.ue_mask_lo,9522						phba->sli4_hba.ue_mask_hi);9523				port_error = -ENODEV;9524			}9525			break;9526		case LPFC_SLI_INTF_IF_TYPE_2:9527		case LPFC_SLI_INTF_IF_TYPE_6:9528			/* Final checks.  The port status should be clean. */9529			if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,9530				&reg_data.word0) ||9531				lpfc_sli4_unrecoverable_port(&reg_data)) {9532				phba->work_status[0] =9533					readl(phba->sli4_hba.u.if_type2.9534					      ERR1regaddr);9535				phba->work_status[1] =9536					readl(phba->sli4_hba.u.if_type2.9537					      ERR2regaddr);9538				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,9539					"2888 Unrecoverable port error "9540					"following POST: port status reg "9541					"0x%x, port_smphr reg 0x%x, "9542					"error 1=0x%x, error 2=0x%x\n",9543					reg_data.word0,9544					portsmphr_reg.word0,9545					phba->work_status[0],9546					phba->work_status[1]);9547				port_error = -ENODEV;9548				break;9549			}9550 9551			if (lpfc_pldv_detect &&9552			    bf_get(lpfc_sli_intf_sli_family,9553				   &phba->sli4_hba.sli_intf) ==9554					LPFC_SLI_INTF_FAMILY_G6)9555				pci_write_config_byte(phba->pcidev,9556						      LPFC_SLI_INTF, CFG_PLD);9557			break;9558		case LPFC_SLI_INTF_IF_TYPE_1:9559		default:9560			break;9561		}9562	}9563	return port_error;9564}9565 9566/**9567 * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.9568 * @phba: pointer to lpfc hba data structure.9569 * @if_type:  The SLI4 interface type getting configured.9570 *9571 * This routine is invoked to set up SLI4 BAR0 PCI config space register9572 * memory map.9573 **/9574static void9575lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)9576{9577	switch (if_type) {9578	case LPFC_SLI_INTF_IF_TYPE_0:9579		phba->sli4_hba.u.if_type0.UERRLOregaddr =9580			phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;9581		phba->sli4_hba.u.if_type0.UERRHIregaddr =9582			phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;9583		phba->sli4_hba.u.if_type0.UEMASKLOregaddr =9584			phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;9585		phba->sli4_hba.u.if_type0.UEMASKHIregaddr =9586			phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;9587		phba->sli4_hba.SLIINTFregaddr =9588			phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;9589		break;9590	case LPFC_SLI_INTF_IF_TYPE_2:9591		phba->sli4_hba.u.if_type2.EQDregaddr =9592			phba->sli4_hba.conf_regs_memmap_p +9593						LPFC_CTL_PORT_EQ_DELAY_OFFSET;9594		phba->sli4_hba.u.if_type2.ERR1regaddr =9595			phba->sli4_hba.conf_regs_memmap_p +9596						LPFC_CTL_PORT_ER1_OFFSET;9597		phba->sli4_hba.u.if_type2.ERR2regaddr =9598			phba->sli4_hba.conf_regs_memmap_p +9599						LPFC_CTL_PORT_ER2_OFFSET;9600		phba->sli4_hba.u.if_type2.CTRLregaddr =9601			phba->sli4_hba.conf_regs_memmap_p +9602						LPFC_CTL_PORT_CTL_OFFSET;9603		phba->sli4_hba.u.if_type2.STATUSregaddr =9604			phba->sli4_hba.conf_regs_memmap_p +9605						LPFC_CTL_PORT_STA_OFFSET;9606		phba->sli4_hba.SLIINTFregaddr =9607			phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;9608		phba->sli4_hba.PSMPHRregaddr =9609			phba->sli4_hba.conf_regs_memmap_p +9610						LPFC_CTL_PORT_SEM_OFFSET;9611		phba->sli4_hba.RQDBregaddr =9612			phba->sli4_hba.conf_regs_memmap_p +9613						LPFC_ULP0_RQ_DOORBELL;9614		phba->sli4_hba.WQDBregaddr =9615			phba->sli4_hba.conf_regs_memmap_p +9616						LPFC_ULP0_WQ_DOORBELL;9617		phba->sli4_hba.CQDBregaddr =9618			phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;9619		phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;9620		phba->sli4_hba.MQDBregaddr =9621			phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;9622		phba->sli4_hba.BMBXregaddr =9623			phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;9624		break;9625	case LPFC_SLI_INTF_IF_TYPE_6:9626		phba->sli4_hba.u.if_type2.EQDregaddr =9627			phba->sli4_hba.conf_regs_memmap_p +9628						LPFC_CTL_PORT_EQ_DELAY_OFFSET;9629		phba->sli4_hba.u.if_type2.ERR1regaddr =9630			phba->sli4_hba.conf_regs_memmap_p +9631						LPFC_CTL_PORT_ER1_OFFSET;9632		phba->sli4_hba.u.if_type2.ERR2regaddr =9633			phba->sli4_hba.conf_regs_memmap_p +9634						LPFC_CTL_PORT_ER2_OFFSET;9635		phba->sli4_hba.u.if_type2.CTRLregaddr =9636			phba->sli4_hba.conf_regs_memmap_p +9637						LPFC_CTL_PORT_CTL_OFFSET;9638		phba->sli4_hba.u.if_type2.STATUSregaddr =9639			phba->sli4_hba.conf_regs_memmap_p +9640						LPFC_CTL_PORT_STA_OFFSET;9641		phba->sli4_hba.PSMPHRregaddr =9642			phba->sli4_hba.conf_regs_memmap_p +9643						LPFC_CTL_PORT_SEM_OFFSET;9644		phba->sli4_hba.BMBXregaddr =9645			phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;9646		break;9647	case LPFC_SLI_INTF_IF_TYPE_1:9648	default:9649		dev_printk(KERN_ERR, &phba->pcidev->dev,9650			   "FATAL - unsupported SLI4 interface type - %d\n",9651			   if_type);9652		break;9653	}9654}9655 9656/**9657 * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.9658 * @phba: pointer to lpfc hba data structure.9659 * @if_type: sli if type to operate on.9660 *9661 * This routine is invoked to set up SLI4 BAR1 register memory map.9662 **/9663static void9664lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba, uint32_t if_type)9665{9666	switch (if_type) {9667	case LPFC_SLI_INTF_IF_TYPE_0:9668		phba->sli4_hba.PSMPHRregaddr =9669			phba->sli4_hba.ctrl_regs_memmap_p +9670			LPFC_SLIPORT_IF0_SMPHR;9671		phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +9672			LPFC_HST_ISR0;9673		phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +9674			LPFC_HST_IMR0;9675		phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +9676			LPFC_HST_ISCR0;9677		break;9678	case LPFC_SLI_INTF_IF_TYPE_6:9679		phba->sli4_hba.RQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +9680			LPFC_IF6_RQ_DOORBELL;9681		phba->sli4_hba.WQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +9682			LPFC_IF6_WQ_DOORBELL;9683		phba->sli4_hba.CQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +9684			LPFC_IF6_CQ_DOORBELL;9685		phba->sli4_hba.EQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +9686			LPFC_IF6_EQ_DOORBELL;9687		phba->sli4_hba.MQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +9688			LPFC_IF6_MQ_DOORBELL;9689		break;9690	case LPFC_SLI_INTF_IF_TYPE_2:9691	case LPFC_SLI_INTF_IF_TYPE_1:9692	default:9693		dev_err(&phba->pcidev->dev,9694			   "FATAL - unsupported SLI4 interface type - %d\n",9695			   if_type);9696		break;9697	}9698}9699 9700/**9701 * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.9702 * @phba: pointer to lpfc hba data structure.9703 * @vf: virtual function number9704 *9705 * This routine is invoked to set up SLI4 BAR2 doorbell register memory map9706 * based on the given viftual function number, @vf.9707 *9708 * Return 0 if successful, otherwise -ENODEV.9709 **/9710static int9711lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)9712{9713	if (vf > LPFC_VIR_FUNC_MAX)9714		return -ENODEV;9715 9716	phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +9717				vf * LPFC_VFR_PAGE_SIZE +9718					LPFC_ULP0_RQ_DOORBELL);9719	phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +9720				vf * LPFC_VFR_PAGE_SIZE +9721					LPFC_ULP0_WQ_DOORBELL);9722	phba->sli4_hba.CQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +9723				vf * LPFC_VFR_PAGE_SIZE +9724					LPFC_EQCQ_DOORBELL);9725	phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;9726	phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +9727				vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);9728	phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +9729				vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);9730	return 0;9731}9732 9733/**9734 * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox9735 * @phba: pointer to lpfc hba data structure.9736 *9737 * This routine is invoked to create the bootstrap mailbox9738 * region consistent with the SLI-4 interface spec.  This9739 * routine allocates all memory necessary to communicate9740 * mailbox commands to the port and sets up all alignment9741 * needs.  No locks are expected to be held when calling9742 * this routine.9743 *9744 * Return codes9745 * 	0 - successful9746 * 	-ENOMEM - could not allocated memory.9747 **/9748static int9749lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)9750{9751	uint32_t bmbx_size;9752	struct lpfc_dmabuf *dmabuf;9753	struct dma_address *dma_address;9754	uint32_t pa_addr;9755	uint64_t phys_addr;9756 9757	dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);9758	if (!dmabuf)9759		return -ENOMEM;9760 9761	/*9762	 * The bootstrap mailbox region is comprised of 2 parts9763	 * plus an alignment restriction of 16 bytes.9764	 */9765	bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);9766	dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, bmbx_size,9767					  &dmabuf->phys, GFP_KERNEL);9768	if (!dmabuf->virt) {9769		kfree(dmabuf);9770		return -ENOMEM;9771	}9772 9773	/*9774	 * Initialize the bootstrap mailbox pointers now so that the register9775	 * operations are simple later.  The mailbox dma address is required9776	 * to be 16-byte aligned.  Also align the virtual memory as each9777	 * maibox is copied into the bmbx mailbox region before issuing the9778	 * command to the port.9779	 */9780	phba->sli4_hba.bmbx.dmabuf = dmabuf;9781	phba->sli4_hba.bmbx.bmbx_size = bmbx_size;9782 9783	phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,9784					      LPFC_ALIGN_16_BYTE);9785	phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,9786					      LPFC_ALIGN_16_BYTE);9787 9788	/*9789	 * Set the high and low physical addresses now.  The SLI4 alignment9790	 * requirement is 16 bytes and the mailbox is posted to the port9791	 * as two 30-bit addresses.  The other data is a bit marking whether9792	 * the 30-bit address is the high or low address.9793	 * Upcast bmbx aphys to 64bits so shift instruction compiles9794	 * clean on 32 bit machines.9795	 */9796	dma_address = &phba->sli4_hba.bmbx.dma_address;9797	phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;9798	pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);9799	dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |9800					   LPFC_BMBX_BIT1_ADDR_HI);9801 9802	pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);9803	dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |9804					   LPFC_BMBX_BIT1_ADDR_LO);9805	return 0;9806}9807 9808/**9809 * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources9810 * @phba: pointer to lpfc hba data structure.9811 *9812 * This routine is invoked to teardown the bootstrap mailbox9813 * region and release all host resources. This routine requires9814 * the caller to ensure all mailbox commands recovered, no9815 * additional mailbox comands are sent, and interrupts are disabled9816 * before calling this routine.9817 *9818 **/9819static void9820lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)9821{9822	dma_free_coherent(&phba->pcidev->dev,9823			  phba->sli4_hba.bmbx.bmbx_size,9824			  phba->sli4_hba.bmbx.dmabuf->virt,9825			  phba->sli4_hba.bmbx.dmabuf->phys);9826 9827	kfree(phba->sli4_hba.bmbx.dmabuf);9828	memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));9829}9830 9831static const char * const lpfc_topo_to_str[] = {9832	"Loop then P2P",9833	"Loopback",9834	"P2P Only",9835	"Unsupported",9836	"Loop Only",9837	"Unsupported",9838	"P2P then Loop",9839};9840 9841#define	LINK_FLAGS_DEF	0x09842#define	LINK_FLAGS_P2P	0x19843#define	LINK_FLAGS_LOOP	0x29844/**9845 * lpfc_map_topology - Map the topology read from READ_CONFIG9846 * @phba: pointer to lpfc hba data structure.9847 * @rd_config: pointer to read config data9848 *9849 * This routine is invoked to map the topology values as read9850 * from the read config mailbox command. If the persistent9851 * topology feature is supported, the firmware will provide the9852 * saved topology information to be used in INIT_LINK9853 **/9854static void9855lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config)9856{9857	u8 ptv, tf, pt;9858 9859	ptv = bf_get(lpfc_mbx_rd_conf_ptv, rd_config);9860	tf = bf_get(lpfc_mbx_rd_conf_tf, rd_config);9861	pt = bf_get(lpfc_mbx_rd_conf_pt, rd_config);9862 9863	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,9864			"2027 Read Config Data : ptv:0x%x, tf:0x%x pt:0x%x",9865			 ptv, tf, pt);9866	if (!ptv) {9867		lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,9868				"2019 FW does not support persistent topology "9869				"Using driver parameter defined value [%s]",9870				lpfc_topo_to_str[phba->cfg_topology]);9871		return;9872	}9873	/* FW supports persistent topology - override module parameter value */9874	set_bit(HBA_PERSISTENT_TOPO, &phba->hba_flag);9875 9876	/* if ASIC_GEN_NUM >= 0xC) */9877	if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==9878		    LPFC_SLI_INTF_IF_TYPE_6) ||9879	    (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==9880		    LPFC_SLI_INTF_FAMILY_G6)) {9881		if (!tf)9882			phba->cfg_topology = ((pt == LINK_FLAGS_LOOP)9883					? FLAGS_TOPOLOGY_MODE_LOOP9884					: FLAGS_TOPOLOGY_MODE_PT_PT);9885		else9886			clear_bit(HBA_PERSISTENT_TOPO, &phba->hba_flag);9887	} else { /* G5 */9888		if (tf)9889			/* If topology failover set - pt is '0' or '1' */9890			phba->cfg_topology = (pt ? FLAGS_TOPOLOGY_MODE_PT_LOOP :9891					      FLAGS_TOPOLOGY_MODE_LOOP_PT);9892		else9893			phba->cfg_topology = ((pt == LINK_FLAGS_P2P)9894					? FLAGS_TOPOLOGY_MODE_PT_PT9895					: FLAGS_TOPOLOGY_MODE_LOOP);9896	}9897	if (test_bit(HBA_PERSISTENT_TOPO, &phba->hba_flag))9898		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,9899				"2020 Using persistent topology value [%s]",9900				lpfc_topo_to_str[phba->cfg_topology]);9901	else9902		lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,9903				"2021 Invalid topology values from FW "9904				"Using driver parameter defined value [%s]",9905				lpfc_topo_to_str[phba->cfg_topology]);9906}9907 9908/**9909 * lpfc_sli4_read_config - Get the config parameters.9910 * @phba: pointer to lpfc hba data structure.9911 *9912 * This routine is invoked to read the configuration parameters from the HBA.9913 * The configuration parameters are used to set the base and maximum values9914 * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource9915 * allocation for the port.9916 *9917 * Return codes9918 * 	0 - successful9919 * 	-ENOMEM - No available memory9920 *      -EIO - The mailbox failed to complete successfully.9921 **/9922int9923lpfc_sli4_read_config(struct lpfc_hba *phba)9924{9925	LPFC_MBOXQ_t *pmb;9926	struct lpfc_mbx_read_config *rd_config;9927	union  lpfc_sli4_cfg_shdr *shdr;9928	uint32_t shdr_status, shdr_add_status;9929	struct lpfc_mbx_get_func_cfg *get_func_cfg;9930	struct lpfc_rsrc_desc_fcfcoe *desc;9931	char *pdesc_0;9932	uint16_t forced_link_speed;9933	uint32_t if_type, qmin, fawwpn;9934	int length, i, rc = 0, rc2;9935 9936	pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);9937	if (!pmb) {9938		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,9939				"2011 Unable to allocate memory for issuing "9940				"SLI_CONFIG_SPECIAL mailbox command\n");9941		return -ENOMEM;9942	}9943 9944	lpfc_read_config(phba, pmb);9945 9946	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);9947	if (rc != MBX_SUCCESS) {9948		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,9949				"2012 Mailbox failed , mbxCmd x%x "9950				"READ_CONFIG, mbxStatus x%x\n",9951				bf_get(lpfc_mqe_command, &pmb->u.mqe),9952				bf_get(lpfc_mqe_status, &pmb->u.mqe));9953		rc = -EIO;9954	} else {9955		rd_config = &pmb->u.mqe.un.rd_config;9956		if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {9957			phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;9958			phba->sli4_hba.lnk_info.lnk_tp =9959				bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);9960			phba->sli4_hba.lnk_info.lnk_no =9961				bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);9962			lpfc_printf_log(phba, KERN_INFO, LOG_SLI,9963					"3081 lnk_type:%d, lnk_numb:%d\n",9964					phba->sli4_hba.lnk_info.lnk_tp,9965					phba->sli4_hba.lnk_info.lnk_no);9966		} else9967			lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,9968					"3082 Mailbox (x%x) returned ldv:x0\n",9969					bf_get(lpfc_mqe_command, &pmb->u.mqe));9970		if (bf_get(lpfc_mbx_rd_conf_bbscn_def, rd_config)) {9971			phba->bbcredit_support = 1;9972			phba->sli4_hba.bbscn_params.word0 = rd_config->word8;9973		}9974 9975		fawwpn = bf_get(lpfc_mbx_rd_conf_fawwpn, rd_config);9976 9977		if (fawwpn) {9978			lpfc_printf_log(phba, KERN_INFO,9979					LOG_INIT | LOG_DISCOVERY,9980					"2702 READ_CONFIG: FA-PWWN is "9981					"configured on\n");9982			phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_CONFIG;9983		} else {9984			/* Clear FW configured flag, preserve driver flag */9985			phba->sli4_hba.fawwpn_flag &= ~LPFC_FAWWPN_CONFIG;9986		}9987 9988		phba->sli4_hba.conf_trunk =9989			bf_get(lpfc_mbx_rd_conf_trunk, rd_config);9990		phba->sli4_hba.extents_in_use =9991			bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);9992 9993		phba->sli4_hba.max_cfg_param.max_xri =9994			bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);9995		/* Reduce resource usage in kdump environment */9996		if (is_kdump_kernel() &&9997		    phba->sli4_hba.max_cfg_param.max_xri > 512)9998			phba->sli4_hba.max_cfg_param.max_xri = 512;9999		phba->sli4_hba.max_cfg_param.xri_base =10000			bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);10001		phba->sli4_hba.max_cfg_param.max_vpi =10002			bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);10003		/* Limit the max we support */10004		if (phba->sli4_hba.max_cfg_param.max_vpi > LPFC_MAX_VPORTS)10005			phba->sli4_hba.max_cfg_param.max_vpi = LPFC_MAX_VPORTS;10006		phba->sli4_hba.max_cfg_param.vpi_base =10007			bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);10008		phba->sli4_hba.max_cfg_param.max_rpi =10009			bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);10010		phba->sli4_hba.max_cfg_param.rpi_base =10011			bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);10012		phba->sli4_hba.max_cfg_param.max_vfi =10013			bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);10014		phba->sli4_hba.max_cfg_param.vfi_base =10015			bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);10016		phba->sli4_hba.max_cfg_param.max_fcfi =10017			bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);10018		phba->sli4_hba.max_cfg_param.max_eq =10019			bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);10020		phba->sli4_hba.max_cfg_param.max_rq =10021			bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);10022		phba->sli4_hba.max_cfg_param.max_wq =10023			bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);10024		phba->sli4_hba.max_cfg_param.max_cq =10025			bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);10026		phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);10027		phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;10028		phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;10029		phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;10030		phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?10031				(phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;10032		phba->max_vports = phba->max_vpi;10033 10034		/* Next decide on FPIN or Signal E2E CGN support10035		 * For congestion alarms and warnings valid combination are:10036		 * 1. FPIN alarms / FPIN warnings10037		 * 2. Signal alarms / Signal warnings10038		 * 3. FPIN alarms / Signal warnings10039		 * 4. Signal alarms / FPIN warnings10040		 *10041		 * Initialize the adapter frequency to 100 mSecs10042		 */10043		phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH;10044		phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;10045		phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;10046 10047		if (lpfc_use_cgn_signal) {10048			if (bf_get(lpfc_mbx_rd_conf_wcs, rd_config)) {10049				phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;10050				phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;10051			}10052			if (bf_get(lpfc_mbx_rd_conf_acs, rd_config)) {10053				/* MUST support both alarm and warning10054				 * because EDC does not support alarm alone.10055				 */10056				if (phba->cgn_reg_signal !=10057				    EDC_CG_SIG_WARN_ONLY) {10058					/* Must support both or none */10059					phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH;10060					phba->cgn_reg_signal =10061						EDC_CG_SIG_NOTSUPPORTED;10062				} else {10063					phba->cgn_reg_signal =10064						EDC_CG_SIG_WARN_ALARM;10065					phba->cgn_reg_fpin =10066						LPFC_CGN_FPIN_NONE;10067				}10068			}10069		}10070 10071		/* Set the congestion initial signal and fpin values. */10072		phba->cgn_init_reg_fpin = phba->cgn_reg_fpin;10073		phba->cgn_init_reg_signal = phba->cgn_reg_signal;10074 10075		lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,10076				"6446 READ_CONFIG reg_sig x%x reg_fpin:x%x\n",10077				phba->cgn_reg_signal, phba->cgn_reg_fpin);10078 10079		lpfc_map_topology(phba, rd_config);10080		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,10081				"2003 cfg params Extents? %d "10082				"XRI(B:%d M:%d), "10083				"VPI(B:%d M:%d) "10084				"VFI(B:%d M:%d) "10085				"RPI(B:%d M:%d) "10086				"FCFI:%d EQ:%d CQ:%d WQ:%d RQ:%d lmt:x%x\n",10087				phba->sli4_hba.extents_in_use,10088				phba->sli4_hba.max_cfg_param.xri_base,10089				phba->sli4_hba.max_cfg_param.max_xri,10090				phba->sli4_hba.max_cfg_param.vpi_base,10091				phba->sli4_hba.max_cfg_param.max_vpi,10092				phba->sli4_hba.max_cfg_param.vfi_base,10093				phba->sli4_hba.max_cfg_param.max_vfi,10094				phba->sli4_hba.max_cfg_param.rpi_base,10095				phba->sli4_hba.max_cfg_param.max_rpi,10096				phba->sli4_hba.max_cfg_param.max_fcfi,10097				phba->sli4_hba.max_cfg_param.max_eq,10098				phba->sli4_hba.max_cfg_param.max_cq,10099				phba->sli4_hba.max_cfg_param.max_wq,10100				phba->sli4_hba.max_cfg_param.max_rq,10101				phba->lmt);10102 10103		/*10104		 * Calculate queue resources based on how10105		 * many WQ/CQ/EQs are available.10106		 */10107		qmin = phba->sli4_hba.max_cfg_param.max_wq;10108		if (phba->sli4_hba.max_cfg_param.max_cq < qmin)10109			qmin = phba->sli4_hba.max_cfg_param.max_cq;10110		/*10111		 * Reserve 4 (ELS, NVME LS, MBOX, plus one extra) and10112		 * the remainder can be used for NVME / FCP.10113		 */10114		qmin -= 4;10115		if (phba->sli4_hba.max_cfg_param.max_eq < qmin)10116			qmin = phba->sli4_hba.max_cfg_param.max_eq;10117 10118		/* Check to see if there is enough for default cfg */10119		if ((phba->cfg_irq_chann > qmin) ||10120		    (phba->cfg_hdw_queue > qmin)) {10121			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10122					"2005 Reducing Queues - "10123					"FW resource limitation: "10124					"WQ %d CQ %d EQ %d: min %d: "10125					"IRQ %d HDWQ %d\n",10126					phba->sli4_hba.max_cfg_param.max_wq,10127					phba->sli4_hba.max_cfg_param.max_cq,10128					phba->sli4_hba.max_cfg_param.max_eq,10129					qmin, phba->cfg_irq_chann,10130					phba->cfg_hdw_queue);10131 10132			if (phba->cfg_irq_chann > qmin)10133				phba->cfg_irq_chann = qmin;10134			if (phba->cfg_hdw_queue > qmin)10135				phba->cfg_hdw_queue = qmin;10136		}10137	}10138 10139	if (rc)10140		goto read_cfg_out;10141 10142	/* Update link speed if forced link speed is supported */10143	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);10144	if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {10145		forced_link_speed =10146			bf_get(lpfc_mbx_rd_conf_link_speed, rd_config);10147		if (forced_link_speed) {10148			set_bit(HBA_FORCED_LINK_SPEED, &phba->hba_flag);10149 10150			switch (forced_link_speed) {10151			case LINK_SPEED_1G:10152				phba->cfg_link_speed =10153					LPFC_USER_LINK_SPEED_1G;10154				break;10155			case LINK_SPEED_2G:10156				phba->cfg_link_speed =10157					LPFC_USER_LINK_SPEED_2G;10158				break;10159			case LINK_SPEED_4G:10160				phba->cfg_link_speed =10161					LPFC_USER_LINK_SPEED_4G;10162				break;10163			case LINK_SPEED_8G:10164				phba->cfg_link_speed =10165					LPFC_USER_LINK_SPEED_8G;10166				break;10167			case LINK_SPEED_10G:10168				phba->cfg_link_speed =10169					LPFC_USER_LINK_SPEED_10G;10170				break;10171			case LINK_SPEED_16G:10172				phba->cfg_link_speed =10173					LPFC_USER_LINK_SPEED_16G;10174				break;10175			case LINK_SPEED_32G:10176				phba->cfg_link_speed =10177					LPFC_USER_LINK_SPEED_32G;10178				break;10179			case LINK_SPEED_64G:10180				phba->cfg_link_speed =10181					LPFC_USER_LINK_SPEED_64G;10182				break;10183			case 0xffff:10184				phba->cfg_link_speed =10185					LPFC_USER_LINK_SPEED_AUTO;10186				break;10187			default:10188				lpfc_printf_log(phba, KERN_ERR,10189						LOG_TRACE_EVENT,10190						"0047 Unrecognized link "10191						"speed : %d\n",10192						forced_link_speed);10193				phba->cfg_link_speed =10194					LPFC_USER_LINK_SPEED_AUTO;10195			}10196		}10197	}10198 10199	/* Reset the DFT_HBA_Q_DEPTH to the max xri  */10200	length = phba->sli4_hba.max_cfg_param.max_xri -10201			lpfc_sli4_get_els_iocb_cnt(phba);10202	if (phba->cfg_hba_queue_depth > length) {10203		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,10204				"3361 HBA queue depth changed from %d to %d\n",10205				phba->cfg_hba_queue_depth, length);10206		phba->cfg_hba_queue_depth = length;10207	}10208 10209	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <10210	    LPFC_SLI_INTF_IF_TYPE_2)10211		goto read_cfg_out;10212 10213	/* get the pf# and vf# for SLI4 if_type 2 port */10214	length = (sizeof(struct lpfc_mbx_get_func_cfg) -10215		  sizeof(struct lpfc_sli4_cfg_mhdr));10216	lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,10217			 LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,10218			 length, LPFC_SLI4_MBX_EMBED);10219 10220	rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);10221	shdr = (union lpfc_sli4_cfg_shdr *)10222				&pmb->u.mqe.un.sli4_config.header.cfg_shdr;10223	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);10224	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);10225	if (rc2 || shdr_status || shdr_add_status) {10226		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10227				"3026 Mailbox failed , mbxCmd x%x "10228				"GET_FUNCTION_CONFIG, mbxStatus x%x\n",10229				bf_get(lpfc_mqe_command, &pmb->u.mqe),10230				bf_get(lpfc_mqe_status, &pmb->u.mqe));10231		goto read_cfg_out;10232	}10233 10234	/* search for fc_fcoe resrouce descriptor */10235	get_func_cfg = &pmb->u.mqe.un.get_func_cfg;10236 10237	pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0];10238	desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0;10239	length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc);10240	if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD)10241		length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH;10242	else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH)10243		goto read_cfg_out;10244 10245	for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {10246		desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i);10247		if (LPFC_RSRC_DESC_TYPE_FCFCOE ==10248		    bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) {10249			phba->sli4_hba.iov.pf_number =10250				bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);10251			phba->sli4_hba.iov.vf_number =10252				bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);10253			break;10254		}10255	}10256 10257	if (i < LPFC_RSRC_DESC_MAX_NUM)10258		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,10259				"3027 GET_FUNCTION_CONFIG: pf_number:%d, "10260				"vf_number:%d\n", phba->sli4_hba.iov.pf_number,10261				phba->sli4_hba.iov.vf_number);10262	else10263		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10264				"3028 GET_FUNCTION_CONFIG: failed to find "10265				"Resource Descriptor:x%x\n",10266				LPFC_RSRC_DESC_TYPE_FCFCOE);10267 10268read_cfg_out:10269	mempool_free(pmb, phba->mbox_mem_pool);10270	return rc;10271}10272 10273/**10274 * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.10275 * @phba: pointer to lpfc hba data structure.10276 *10277 * This routine is invoked to setup the port-side endian order when10278 * the port if_type is 0.  This routine has no function for other10279 * if_types.10280 *10281 * Return codes10282 * 	0 - successful10283 * 	-ENOMEM - No available memory10284 *      -EIO - The mailbox failed to complete successfully.10285 **/10286static int10287lpfc_setup_endian_order(struct lpfc_hba *phba)10288{10289	LPFC_MBOXQ_t *mboxq;10290	uint32_t if_type, rc = 0;10291	uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,10292				      HOST_ENDIAN_HIGH_WORD1};10293 10294	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);10295	switch (if_type) {10296	case LPFC_SLI_INTF_IF_TYPE_0:10297		mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,10298						       GFP_KERNEL);10299		if (!mboxq) {10300			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10301					"0492 Unable to allocate memory for "10302					"issuing SLI_CONFIG_SPECIAL mailbox "10303					"command\n");10304			return -ENOMEM;10305		}10306 10307		/*10308		 * The SLI4_CONFIG_SPECIAL mailbox command requires the first10309		 * two words to contain special data values and no other data.10310		 */10311		memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));10312		memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));10313		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);10314		if (rc != MBX_SUCCESS) {10315			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10316					"0493 SLI_CONFIG_SPECIAL mailbox "10317					"failed with status x%x\n",10318					rc);10319			rc = -EIO;10320		}10321		mempool_free(mboxq, phba->mbox_mem_pool);10322		break;10323	case LPFC_SLI_INTF_IF_TYPE_6:10324	case LPFC_SLI_INTF_IF_TYPE_2:10325	case LPFC_SLI_INTF_IF_TYPE_1:10326	default:10327		break;10328	}10329	return rc;10330}10331 10332/**10333 * lpfc_sli4_queue_verify - Verify and update EQ counts10334 * @phba: pointer to lpfc hba data structure.10335 *10336 * This routine is invoked to check the user settable queue counts for EQs.10337 * After this routine is called the counts will be set to valid values that10338 * adhere to the constraints of the system's interrupt vectors and the port's10339 * queue resources.10340 *10341 * Return codes10342 *      0 - successful10343 *      -ENOMEM - No available memory10344 **/10345static int10346lpfc_sli4_queue_verify(struct lpfc_hba *phba)10347{10348	/*10349	 * Sanity check for configured queue parameters against the run-time10350	 * device parameters10351	 */10352 10353	if (phba->nvmet_support) {10354		if (phba->cfg_hdw_queue < phba->cfg_nvmet_mrq)10355			phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;10356		if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)10357			phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;10358	}10359 10360	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,10361			"2574 IO channels: hdwQ %d IRQ %d MRQ: %d\n",10362			phba->cfg_hdw_queue, phba->cfg_irq_chann,10363			phba->cfg_nvmet_mrq);10364 10365	/* Get EQ depth from module parameter, fake the default for now */10366	phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;10367	phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;10368 10369	/* Get CQ depth from module parameter, fake the default for now */10370	phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;10371	phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;10372	return 0;10373}10374 10375static int10376lpfc_alloc_io_wq_cq(struct lpfc_hba *phba, int idx)10377{10378	struct lpfc_queue *qdesc;10379	u32 wqesize;10380	int cpu;10381 10382	cpu = lpfc_find_cpu_handle(phba, idx, LPFC_FIND_BY_HDWQ);10383	/* Create Fast Path IO CQs */10384	if (phba->enab_exp_wqcq_pages)10385		/* Increase the CQ size when WQEs contain an embedded cdb */10386		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,10387					      phba->sli4_hba.cq_esize,10388					      LPFC_CQE_EXP_COUNT, cpu);10389 10390	else10391		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10392					      phba->sli4_hba.cq_esize,10393					      phba->sli4_hba.cq_ecount, cpu);10394	if (!qdesc) {10395		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10396				"0499 Failed allocate fast-path IO CQ (%d)\n",10397				idx);10398		return 1;10399	}10400	qdesc->qe_valid = 1;10401	qdesc->hdwq = idx;10402	qdesc->chann = cpu;10403	phba->sli4_hba.hdwq[idx].io_cq = qdesc;10404 10405	/* Create Fast Path IO WQs */10406	if (phba->enab_exp_wqcq_pages) {10407		/* Increase the WQ size when WQEs contain an embedded cdb */10408		wqesize = (phba->fcp_embed_io) ?10409			LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;10410		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,10411					      wqesize,10412					      LPFC_WQE_EXP_COUNT, cpu);10413	} else10414		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10415					      phba->sli4_hba.wq_esize,10416					      phba->sli4_hba.wq_ecount, cpu);10417 10418	if (!qdesc) {10419		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10420				"0503 Failed allocate fast-path IO WQ (%d)\n",10421				idx);10422		return 1;10423	}10424	qdesc->hdwq = idx;10425	qdesc->chann = cpu;10426	phba->sli4_hba.hdwq[idx].io_wq = qdesc;10427	list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);10428	return 0;10429}10430 10431/**10432 * lpfc_sli4_queue_create - Create all the SLI4 queues10433 * @phba: pointer to lpfc hba data structure.10434 *10435 * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA10436 * operation. For each SLI4 queue type, the parameters such as queue entry10437 * count (queue depth) shall be taken from the module parameter. For now,10438 * we just use some constant number as place holder.10439 *10440 * Return codes10441 *      0 - successful10442 *      -ENOMEM - No availble memory10443 *      -EIO - The mailbox failed to complete successfully.10444 **/10445int10446lpfc_sli4_queue_create(struct lpfc_hba *phba)10447{10448	struct lpfc_queue *qdesc;10449	int idx, cpu, eqcpu;10450	struct lpfc_sli4_hdw_queue *qp;10451	struct lpfc_vector_map_info *cpup;10452	struct lpfc_vector_map_info *eqcpup;10453	struct lpfc_eq_intr_info *eqi;10454	u32 wqesize;10455 10456	/*10457	 * Create HBA Record arrays.10458	 * Both NVME and FCP will share that same vectors / EQs10459	 */10460	phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;10461	phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;10462	phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;10463	phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;10464	phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;10465	phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;10466	phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;10467	phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;10468	phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;10469	phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;10470 10471	if (!phba->sli4_hba.hdwq) {10472		phba->sli4_hba.hdwq = kcalloc(10473			phba->cfg_hdw_queue, sizeof(struct lpfc_sli4_hdw_queue),10474			GFP_KERNEL);10475		if (!phba->sli4_hba.hdwq) {10476			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10477					"6427 Failed allocate memory for "10478					"fast-path Hardware Queue array\n");10479			goto out_error;10480		}10481		/* Prepare hardware queues to take IO buffers */10482		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {10483			qp = &phba->sli4_hba.hdwq[idx];10484			spin_lock_init(&qp->io_buf_list_get_lock);10485			spin_lock_init(&qp->io_buf_list_put_lock);10486			INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);10487			INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);10488			qp->get_io_bufs = 0;10489			qp->put_io_bufs = 0;10490			qp->total_io_bufs = 0;10491			spin_lock_init(&qp->abts_io_buf_list_lock);10492			INIT_LIST_HEAD(&qp->lpfc_abts_io_buf_list);10493			qp->abts_scsi_io_bufs = 0;10494			qp->abts_nvme_io_bufs = 0;10495			INIT_LIST_HEAD(&qp->sgl_list);10496			INIT_LIST_HEAD(&qp->cmd_rsp_buf_list);10497			spin_lock_init(&qp->hdwq_lock);10498		}10499	}10500 10501	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {10502		if (phba->nvmet_support) {10503			phba->sli4_hba.nvmet_cqset = kcalloc(10504					phba->cfg_nvmet_mrq,10505					sizeof(struct lpfc_queue *),10506					GFP_KERNEL);10507			if (!phba->sli4_hba.nvmet_cqset) {10508				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10509					"3121 Fail allocate memory for "10510					"fast-path CQ set array\n");10511				goto out_error;10512			}10513			phba->sli4_hba.nvmet_mrq_hdr = kcalloc(10514					phba->cfg_nvmet_mrq,10515					sizeof(struct lpfc_queue *),10516					GFP_KERNEL);10517			if (!phba->sli4_hba.nvmet_mrq_hdr) {10518				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10519					"3122 Fail allocate memory for "10520					"fast-path RQ set hdr array\n");10521				goto out_error;10522			}10523			phba->sli4_hba.nvmet_mrq_data = kcalloc(10524					phba->cfg_nvmet_mrq,10525					sizeof(struct lpfc_queue *),10526					GFP_KERNEL);10527			if (!phba->sli4_hba.nvmet_mrq_data) {10528				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10529					"3124 Fail allocate memory for "10530					"fast-path RQ set data array\n");10531				goto out_error;10532			}10533		}10534	}10535 10536	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);10537 10538	/* Create HBA Event Queues (EQs) */10539	for_each_present_cpu(cpu) {10540		/* We only want to create 1 EQ per vector, even though10541		 * multiple CPUs might be using that vector. so only10542		 * selects the CPUs that are LPFC_CPU_FIRST_IRQ.10543		 */10544		cpup = &phba->sli4_hba.cpu_map[cpu];10545		if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))10546			continue;10547 10548		/* Get a ptr to the Hardware Queue associated with this CPU */10549		qp = &phba->sli4_hba.hdwq[cpup->hdwq];10550 10551		/* Allocate an EQ */10552		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10553					      phba->sli4_hba.eq_esize,10554					      phba->sli4_hba.eq_ecount, cpu);10555		if (!qdesc) {10556			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10557					"0497 Failed allocate EQ (%d)\n",10558					cpup->hdwq);10559			goto out_error;10560		}10561		qdesc->qe_valid = 1;10562		qdesc->hdwq = cpup->hdwq;10563		qdesc->chann = cpu; /* First CPU this EQ is affinitized to */10564		qdesc->last_cpu = qdesc->chann;10565 10566		/* Save the allocated EQ in the Hardware Queue */10567		qp->hba_eq = qdesc;10568 10569		eqi = per_cpu_ptr(phba->sli4_hba.eq_info, qdesc->last_cpu);10570		list_add(&qdesc->cpu_list, &eqi->list);10571	}10572 10573	/* Now we need to populate the other Hardware Queues, that share10574	 * an IRQ vector, with the associated EQ ptr.10575	 */10576	for_each_present_cpu(cpu) {10577		cpup = &phba->sli4_hba.cpu_map[cpu];10578 10579		/* Check for EQ already allocated in previous loop */10580		if (cpup->flag & LPFC_CPU_FIRST_IRQ)10581			continue;10582 10583		/* Check for multiple CPUs per hdwq */10584		qp = &phba->sli4_hba.hdwq[cpup->hdwq];10585		if (qp->hba_eq)10586			continue;10587 10588		/* We need to share an EQ for this hdwq */10589		eqcpu = lpfc_find_cpu_handle(phba, cpup->eq, LPFC_FIND_BY_EQ);10590		eqcpup = &phba->sli4_hba.cpu_map[eqcpu];10591		qp->hba_eq = phba->sli4_hba.hdwq[eqcpup->hdwq].hba_eq;10592	}10593 10594	/* Allocate IO Path SLI4 CQ/WQs */10595	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {10596		if (lpfc_alloc_io_wq_cq(phba, idx))10597			goto out_error;10598	}10599 10600	if (phba->nvmet_support) {10601		for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {10602			cpu = lpfc_find_cpu_handle(phba, idx,10603						   LPFC_FIND_BY_HDWQ);10604			qdesc = lpfc_sli4_queue_alloc(phba,10605						      LPFC_DEFAULT_PAGE_SIZE,10606						      phba->sli4_hba.cq_esize,10607						      phba->sli4_hba.cq_ecount,10608						      cpu);10609			if (!qdesc) {10610				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10611						"3142 Failed allocate NVME "10612						"CQ Set (%d)\n", idx);10613				goto out_error;10614			}10615			qdesc->qe_valid = 1;10616			qdesc->hdwq = idx;10617			qdesc->chann = cpu;10618			phba->sli4_hba.nvmet_cqset[idx] = qdesc;10619		}10620	}10621 10622	/*10623	 * Create Slow Path Completion Queues (CQs)10624	 */10625 10626	cpu = lpfc_find_cpu_handle(phba, 0, LPFC_FIND_BY_EQ);10627	/* Create slow-path Mailbox Command Complete Queue */10628	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10629				      phba->sli4_hba.cq_esize,10630				      phba->sli4_hba.cq_ecount, cpu);10631	if (!qdesc) {10632		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10633				"0500 Failed allocate slow-path mailbox CQ\n");10634		goto out_error;10635	}10636	qdesc->qe_valid = 1;10637	phba->sli4_hba.mbx_cq = qdesc;10638 10639	/* Create slow-path ELS Complete Queue */10640	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10641				      phba->sli4_hba.cq_esize,10642				      phba->sli4_hba.cq_ecount, cpu);10643	if (!qdesc) {10644		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10645				"0501 Failed allocate slow-path ELS CQ\n");10646		goto out_error;10647	}10648	qdesc->qe_valid = 1;10649	qdesc->chann = cpu;10650	phba->sli4_hba.els_cq = qdesc;10651 10652 10653	/*10654	 * Create Slow Path Work Queues (WQs)10655	 */10656 10657	/* Create Mailbox Command Queue */10658 10659	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10660				      phba->sli4_hba.mq_esize,10661				      phba->sli4_hba.mq_ecount, cpu);10662	if (!qdesc) {10663		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10664				"0505 Failed allocate slow-path MQ\n");10665		goto out_error;10666	}10667	qdesc->chann = cpu;10668	phba->sli4_hba.mbx_wq = qdesc;10669 10670	/*10671	 * Create ELS Work Queues10672	 */10673 10674	/*10675	 * Create slow-path ELS Work Queue.10676	 * Increase the ELS WQ size when WQEs contain an embedded cdb10677	 */10678	wqesize = (phba->fcp_embed_io) ?10679			LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;10680 10681	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10682				      wqesize,10683				      phba->sli4_hba.wq_ecount, cpu);10684	if (!qdesc) {10685		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10686				"0504 Failed allocate slow-path ELS WQ\n");10687		goto out_error;10688	}10689	qdesc->chann = cpu;10690	phba->sli4_hba.els_wq = qdesc;10691	list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);10692 10693	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {10694		/* Create NVME LS Complete Queue */10695		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10696					      phba->sli4_hba.cq_esize,10697					      phba->sli4_hba.cq_ecount, cpu);10698		if (!qdesc) {10699			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10700					"6079 Failed allocate NVME LS CQ\n");10701			goto out_error;10702		}10703		qdesc->chann = cpu;10704		qdesc->qe_valid = 1;10705		phba->sli4_hba.nvmels_cq = qdesc;10706 10707		/* Create NVME LS Work Queue */10708		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10709					      phba->sli4_hba.wq_esize,10710					      phba->sli4_hba.wq_ecount, cpu);10711		if (!qdesc) {10712			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10713					"6080 Failed allocate NVME LS WQ\n");10714			goto out_error;10715		}10716		qdesc->chann = cpu;10717		phba->sli4_hba.nvmels_wq = qdesc;10718		list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);10719	}10720 10721	/*10722	 * Create Receive Queue (RQ)10723	 */10724 10725	/* Create Receive Queue for header */10726	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10727				      phba->sli4_hba.rq_esize,10728				      phba->sli4_hba.rq_ecount, cpu);10729	if (!qdesc) {10730		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10731				"0506 Failed allocate receive HRQ\n");10732		goto out_error;10733	}10734	phba->sli4_hba.hdr_rq = qdesc;10735 10736	/* Create Receive Queue for data */10737	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,10738				      phba->sli4_hba.rq_esize,10739				      phba->sli4_hba.rq_ecount, cpu);10740	if (!qdesc) {10741		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10742				"0507 Failed allocate receive DRQ\n");10743		goto out_error;10744	}10745	phba->sli4_hba.dat_rq = qdesc;10746 10747	if ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) &&10748	    phba->nvmet_support) {10749		for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {10750			cpu = lpfc_find_cpu_handle(phba, idx,10751						   LPFC_FIND_BY_HDWQ);10752			/* Create NVMET Receive Queue for header */10753			qdesc = lpfc_sli4_queue_alloc(phba,10754						      LPFC_DEFAULT_PAGE_SIZE,10755						      phba->sli4_hba.rq_esize,10756						      LPFC_NVMET_RQE_DEF_COUNT,10757						      cpu);10758			if (!qdesc) {10759				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10760						"3146 Failed allocate "10761						"receive HRQ\n");10762				goto out_error;10763			}10764			qdesc->hdwq = idx;10765			phba->sli4_hba.nvmet_mrq_hdr[idx] = qdesc;10766 10767			/* Only needed for header of RQ pair */10768			qdesc->rqbp = kzalloc_node(sizeof(*qdesc->rqbp),10769						   GFP_KERNEL,10770						   cpu_to_node(cpu));10771			if (qdesc->rqbp == NULL) {10772				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10773						"6131 Failed allocate "10774						"Header RQBP\n");10775				goto out_error;10776			}10777 10778			/* Put list in known state in case driver load fails. */10779			INIT_LIST_HEAD(&qdesc->rqbp->rqb_buffer_list);10780 10781			/* Create NVMET Receive Queue for data */10782			qdesc = lpfc_sli4_queue_alloc(phba,10783						      LPFC_DEFAULT_PAGE_SIZE,10784						      phba->sli4_hba.rq_esize,10785						      LPFC_NVMET_RQE_DEF_COUNT,10786						      cpu);10787			if (!qdesc) {10788				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10789						"3156 Failed allocate "10790						"receive DRQ\n");10791				goto out_error;10792			}10793			qdesc->hdwq = idx;10794			phba->sli4_hba.nvmet_mrq_data[idx] = qdesc;10795		}10796	}10797 10798	/* Clear NVME stats */10799	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {10800		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {10801			memset(&phba->sli4_hba.hdwq[idx].nvme_cstat, 0,10802			       sizeof(phba->sli4_hba.hdwq[idx].nvme_cstat));10803		}10804	}10805 10806	/* Clear SCSI stats */10807	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {10808		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {10809			memset(&phba->sli4_hba.hdwq[idx].scsi_cstat, 0,10810			       sizeof(phba->sli4_hba.hdwq[idx].scsi_cstat));10811		}10812	}10813 10814	return 0;10815 10816out_error:10817	lpfc_sli4_queue_destroy(phba);10818	return -ENOMEM;10819}10820 10821static inline void10822__lpfc_sli4_release_queue(struct lpfc_queue **qp)10823{10824	if (*qp != NULL) {10825		lpfc_sli4_queue_free(*qp);10826		*qp = NULL;10827	}10828}10829 10830static inline void10831lpfc_sli4_release_queues(struct lpfc_queue ***qs, int max)10832{10833	int idx;10834 10835	if (*qs == NULL)10836		return;10837 10838	for (idx = 0; idx < max; idx++)10839		__lpfc_sli4_release_queue(&(*qs)[idx]);10840 10841	kfree(*qs);10842	*qs = NULL;10843}10844 10845static inline void10846lpfc_sli4_release_hdwq(struct lpfc_hba *phba)10847{10848	struct lpfc_sli4_hdw_queue *hdwq;10849	struct lpfc_queue *eq;10850	uint32_t idx;10851 10852	hdwq = phba->sli4_hba.hdwq;10853 10854	/* Loop thru all Hardware Queues */10855	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {10856		/* Free the CQ/WQ corresponding to the Hardware Queue */10857		lpfc_sli4_queue_free(hdwq[idx].io_cq);10858		lpfc_sli4_queue_free(hdwq[idx].io_wq);10859		hdwq[idx].hba_eq = NULL;10860		hdwq[idx].io_cq = NULL;10861		hdwq[idx].io_wq = NULL;10862		if (phba->cfg_xpsgl && !phba->nvmet_support)10863			lpfc_free_sgl_per_hdwq(phba, &hdwq[idx]);10864		lpfc_free_cmd_rsp_buf_per_hdwq(phba, &hdwq[idx]);10865	}10866	/* Loop thru all IRQ vectors */10867	for (idx = 0; idx < phba->cfg_irq_chann; idx++) {10868		/* Free the EQ corresponding to the IRQ vector */10869		eq = phba->sli4_hba.hba_eq_hdl[idx].eq;10870		lpfc_sli4_queue_free(eq);10871		phba->sli4_hba.hba_eq_hdl[idx].eq = NULL;10872	}10873}10874 10875/**10876 * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues10877 * @phba: pointer to lpfc hba data structure.10878 *10879 * This routine is invoked to release all the SLI4 queues with the FCoE HBA10880 * operation.10881 *10882 * Return codes10883 *      0 - successful10884 *      -ENOMEM - No available memory10885 *      -EIO - The mailbox failed to complete successfully.10886 **/10887void10888lpfc_sli4_queue_destroy(struct lpfc_hba *phba)10889{10890	/*10891	 * Set FREE_INIT before beginning to free the queues.10892	 * Wait until the users of queues to acknowledge to10893	 * release queues by clearing FREE_WAIT.10894	 */10895	spin_lock_irq(&phba->hbalock);10896	phba->sli.sli_flag |= LPFC_QUEUE_FREE_INIT;10897	while (phba->sli.sli_flag & LPFC_QUEUE_FREE_WAIT) {10898		spin_unlock_irq(&phba->hbalock);10899		msleep(20);10900		spin_lock_irq(&phba->hbalock);10901	}10902	spin_unlock_irq(&phba->hbalock);10903 10904	lpfc_sli4_cleanup_poll_list(phba);10905 10906	/* Release HBA eqs */10907	if (phba->sli4_hba.hdwq)10908		lpfc_sli4_release_hdwq(phba);10909 10910	if (phba->nvmet_support) {10911		lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_cqset,10912					 phba->cfg_nvmet_mrq);10913 10914		lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_hdr,10915					 phba->cfg_nvmet_mrq);10916		lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_data,10917					 phba->cfg_nvmet_mrq);10918	}10919 10920	/* Release mailbox command work queue */10921	__lpfc_sli4_release_queue(&phba->sli4_hba.mbx_wq);10922 10923	/* Release ELS work queue */10924	__lpfc_sli4_release_queue(&phba->sli4_hba.els_wq);10925 10926	/* Release ELS work queue */10927	__lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_wq);10928 10929	/* Release unsolicited receive queue */10930	__lpfc_sli4_release_queue(&phba->sli4_hba.hdr_rq);10931	__lpfc_sli4_release_queue(&phba->sli4_hba.dat_rq);10932 10933	/* Release ELS complete queue */10934	__lpfc_sli4_release_queue(&phba->sli4_hba.els_cq);10935 10936	/* Release NVME LS complete queue */10937	__lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_cq);10938 10939	/* Release mailbox command complete queue */10940	__lpfc_sli4_release_queue(&phba->sli4_hba.mbx_cq);10941 10942	/* Everything on this list has been freed */10943	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);10944 10945	/* Done with freeing the queues */10946	spin_lock_irq(&phba->hbalock);10947	phba->sli.sli_flag &= ~LPFC_QUEUE_FREE_INIT;10948	spin_unlock_irq(&phba->hbalock);10949}10950 10951int10952lpfc_free_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *rq)10953{10954	struct lpfc_rqb *rqbp;10955	struct lpfc_dmabuf *h_buf;10956	struct rqb_dmabuf *rqb_buffer;10957 10958	rqbp = rq->rqbp;10959	while (!list_empty(&rqbp->rqb_buffer_list)) {10960		list_remove_head(&rqbp->rqb_buffer_list, h_buf,10961				 struct lpfc_dmabuf, list);10962 10963		rqb_buffer = container_of(h_buf, struct rqb_dmabuf, hbuf);10964		(rqbp->rqb_free_buffer)(phba, rqb_buffer);10965		rqbp->buffer_count--;10966	}10967	return 1;10968}10969 10970static int10971lpfc_create_wq_cq(struct lpfc_hba *phba, struct lpfc_queue *eq,10972	struct lpfc_queue *cq, struct lpfc_queue *wq, uint16_t *cq_map,10973	int qidx, uint32_t qtype)10974{10975	struct lpfc_sli_ring *pring;10976	int rc;10977 10978	if (!eq || !cq || !wq) {10979		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10980			"6085 Fast-path %s (%d) not allocated\n",10981			((eq) ? ((cq) ? "WQ" : "CQ") : "EQ"), qidx);10982		return -ENOMEM;10983	}10984 10985	/* create the Cq first */10986	rc = lpfc_cq_create(phba, cq, eq,10987			(qtype == LPFC_MBOX) ? LPFC_MCQ : LPFC_WCQ, qtype);10988	if (rc) {10989		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,10990				"6086 Failed setup of CQ (%d), rc = 0x%x\n",10991				qidx, (uint32_t)rc);10992		return rc;10993	}10994 10995	if (qtype != LPFC_MBOX) {10996		/* Setup cq_map for fast lookup */10997		if (cq_map)10998			*cq_map = cq->queue_id;10999 11000		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,11001			"6087 CQ setup: cq[%d]-id=%d, parent eq[%d]-id=%d\n",11002			qidx, cq->queue_id, qidx, eq->queue_id);11003 11004		/* create the wq */11005		rc = lpfc_wq_create(phba, wq, cq, qtype);11006		if (rc) {11007			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11008				"4618 Fail setup fastpath WQ (%d), rc = 0x%x\n",11009				qidx, (uint32_t)rc);11010			/* no need to tear down cq - caller will do so */11011			return rc;11012		}11013 11014		/* Bind this CQ/WQ to the NVME ring */11015		pring = wq->pring;11016		pring->sli.sli4.wqp = (void *)wq;11017		cq->pring = pring;11018 11019		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,11020			"2593 WQ setup: wq[%d]-id=%d assoc=%d, cq[%d]-id=%d\n",11021			qidx, wq->queue_id, wq->assoc_qid, qidx, cq->queue_id);11022	} else {11023		rc = lpfc_mq_create(phba, wq, cq, LPFC_MBOX);11024		if (rc) {11025			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11026					"0539 Failed setup of slow-path MQ: "11027					"rc = 0x%x\n", rc);11028			/* no need to tear down cq - caller will do so */11029			return rc;11030		}11031 11032		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,11033			"2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",11034			phba->sli4_hba.mbx_wq->queue_id,11035			phba->sli4_hba.mbx_cq->queue_id);11036	}11037 11038	return 0;11039}11040 11041/**11042 * lpfc_setup_cq_lookup - Setup the CQ lookup table11043 * @phba: pointer to lpfc hba data structure.11044 *11045 * This routine will populate the cq_lookup table by all11046 * available CQ queue_id's.11047 **/11048static void11049lpfc_setup_cq_lookup(struct lpfc_hba *phba)11050{11051	struct lpfc_queue *eq, *childq;11052	int qidx;11053 11054	memset(phba->sli4_hba.cq_lookup, 0,11055	       (sizeof(struct lpfc_queue *) * (phba->sli4_hba.cq_max + 1)));11056	/* Loop thru all IRQ vectors */11057	for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {11058		/* Get the EQ corresponding to the IRQ vector */11059		eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;11060		if (!eq)11061			continue;11062		/* Loop through all CQs associated with that EQ */11063		list_for_each_entry(childq, &eq->child_list, list) {11064			if (childq->queue_id > phba->sli4_hba.cq_max)11065				continue;11066			if (childq->subtype == LPFC_IO)11067				phba->sli4_hba.cq_lookup[childq->queue_id] =11068					childq;11069		}11070	}11071}11072 11073/**11074 * lpfc_sli4_queue_setup - Set up all the SLI4 queues11075 * @phba: pointer to lpfc hba data structure.11076 *11077 * This routine is invoked to set up all the SLI4 queues for the FCoE HBA11078 * operation.11079 *11080 * Return codes11081 *      0 - successful11082 *      -ENOMEM - No available memory11083 *      -EIO - The mailbox failed to complete successfully.11084 **/11085int11086lpfc_sli4_queue_setup(struct lpfc_hba *phba)11087{11088	uint32_t shdr_status, shdr_add_status;11089	union lpfc_sli4_cfg_shdr *shdr;11090	struct lpfc_vector_map_info *cpup;11091	struct lpfc_sli4_hdw_queue *qp;11092	LPFC_MBOXQ_t *mboxq;11093	int qidx, cpu;11094	uint32_t length, usdelay;11095	int rc = -ENOMEM;11096 11097	/* Check for dual-ULP support */11098	mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);11099	if (!mboxq) {11100		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11101				"3249 Unable to allocate memory for "11102				"QUERY_FW_CFG mailbox command\n");11103		return -ENOMEM;11104	}11105	length = (sizeof(struct lpfc_mbx_query_fw_config) -11106		  sizeof(struct lpfc_sli4_cfg_mhdr));11107	lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,11108			 LPFC_MBOX_OPCODE_QUERY_FW_CFG,11109			 length, LPFC_SLI4_MBX_EMBED);11110 11111	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);11112 11113	shdr = (union lpfc_sli4_cfg_shdr *)11114			&mboxq->u.mqe.un.sli4_config.header.cfg_shdr;11115	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);11116	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);11117	if (shdr_status || shdr_add_status || rc) {11118		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11119				"3250 QUERY_FW_CFG mailbox failed with status "11120				"x%x add_status x%x, mbx status x%x\n",11121				shdr_status, shdr_add_status, rc);11122		mempool_free(mboxq, phba->mbox_mem_pool);11123		rc = -ENXIO;11124		goto out_error;11125	}11126 11127	phba->sli4_hba.fw_func_mode =11128			mboxq->u.mqe.un.query_fw_cfg.rsp.function_mode;11129	phba->sli4_hba.ulp0_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp0_mode;11130	phba->sli4_hba.ulp1_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp1_mode;11131	phba->sli4_hba.physical_port =11132			mboxq->u.mqe.un.query_fw_cfg.rsp.physical_port;11133	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,11134			"3251 QUERY_FW_CFG: func_mode:x%x, ulp0_mode:x%x, "11135			"ulp1_mode:x%x\n", phba->sli4_hba.fw_func_mode,11136			phba->sli4_hba.ulp0_mode, phba->sli4_hba.ulp1_mode);11137 11138	mempool_free(mboxq, phba->mbox_mem_pool);11139 11140	/*11141	 * Set up HBA Event Queues (EQs)11142	 */11143	qp = phba->sli4_hba.hdwq;11144 11145	/* Set up HBA event queue */11146	if (!qp) {11147		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11148				"3147 Fast-path EQs not allocated\n");11149		rc = -ENOMEM;11150		goto out_error;11151	}11152 11153	/* Loop thru all IRQ vectors */11154	for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {11155		/* Create HBA Event Queues (EQs) in order */11156		for_each_present_cpu(cpu) {11157			cpup = &phba->sli4_hba.cpu_map[cpu];11158 11159			/* Look for the CPU thats using that vector with11160			 * LPFC_CPU_FIRST_IRQ set.11161			 */11162			if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))11163				continue;11164			if (qidx != cpup->eq)11165				continue;11166 11167			/* Create an EQ for that vector */11168			rc = lpfc_eq_create(phba, qp[cpup->hdwq].hba_eq,11169					    phba->cfg_fcp_imax);11170			if (rc) {11171				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11172						"0523 Failed setup of fast-path"11173						" EQ (%d), rc = 0x%x\n",11174						cpup->eq, (uint32_t)rc);11175				goto out_destroy;11176			}11177 11178			/* Save the EQ for that vector in the hba_eq_hdl */11179			phba->sli4_hba.hba_eq_hdl[cpup->eq].eq =11180				qp[cpup->hdwq].hba_eq;11181 11182			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,11183					"2584 HBA EQ setup: queue[%d]-id=%d\n",11184					cpup->eq,11185					qp[cpup->hdwq].hba_eq->queue_id);11186		}11187	}11188 11189	/* Loop thru all Hardware Queues */11190	for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {11191		cpu = lpfc_find_cpu_handle(phba, qidx, LPFC_FIND_BY_HDWQ);11192		cpup = &phba->sli4_hba.cpu_map[cpu];11193 11194		/* Create the CQ/WQ corresponding to the Hardware Queue */11195		rc = lpfc_create_wq_cq(phba,11196				       phba->sli4_hba.hdwq[cpup->hdwq].hba_eq,11197				       qp[qidx].io_cq,11198				       qp[qidx].io_wq,11199				       &phba->sli4_hba.hdwq[qidx].io_cq_map,11200				       qidx,11201				       LPFC_IO);11202		if (rc) {11203			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11204					"0535 Failed to setup fastpath "11205					"IO WQ/CQ (%d), rc = 0x%x\n",11206					qidx, (uint32_t)rc);11207			goto out_destroy;11208		}11209	}11210 11211	/*11212	 * Set up Slow Path Complete Queues (CQs)11213	 */11214 11215	/* Set up slow-path MBOX CQ/MQ */11216 11217	if (!phba->sli4_hba.mbx_cq || !phba->sli4_hba.mbx_wq) {11218		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11219				"0528 %s not allocated\n",11220				phba->sli4_hba.mbx_cq ?11221				"Mailbox WQ" : "Mailbox CQ");11222		rc = -ENOMEM;11223		goto out_destroy;11224	}11225 11226	rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,11227			       phba->sli4_hba.mbx_cq,11228			       phba->sli4_hba.mbx_wq,11229			       NULL, 0, LPFC_MBOX);11230	if (rc) {11231		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11232			"0529 Failed setup of mailbox WQ/CQ: rc = 0x%x\n",11233			(uint32_t)rc);11234		goto out_destroy;11235	}11236	if (phba->nvmet_support) {11237		if (!phba->sli4_hba.nvmet_cqset) {11238			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11239					"3165 Fast-path NVME CQ Set "11240					"array not allocated\n");11241			rc = -ENOMEM;11242			goto out_destroy;11243		}11244		if (phba->cfg_nvmet_mrq > 1) {11245			rc = lpfc_cq_create_set(phba,11246					phba->sli4_hba.nvmet_cqset,11247					qp,11248					LPFC_WCQ, LPFC_NVMET);11249			if (rc) {11250				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11251						"3164 Failed setup of NVME CQ "11252						"Set, rc = 0x%x\n",11253						(uint32_t)rc);11254				goto out_destroy;11255			}11256		} else {11257			/* Set up NVMET Receive Complete Queue */11258			rc = lpfc_cq_create(phba, phba->sli4_hba.nvmet_cqset[0],11259					    qp[0].hba_eq,11260					    LPFC_WCQ, LPFC_NVMET);11261			if (rc) {11262				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11263						"6089 Failed setup NVMET CQ: "11264						"rc = 0x%x\n", (uint32_t)rc);11265				goto out_destroy;11266			}11267			phba->sli4_hba.nvmet_cqset[0]->chann = 0;11268 11269			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,11270					"6090 NVMET CQ setup: cq-id=%d, "11271					"parent eq-id=%d\n",11272					phba->sli4_hba.nvmet_cqset[0]->queue_id,11273					qp[0].hba_eq->queue_id);11274		}11275	}11276 11277	/* Set up slow-path ELS WQ/CQ */11278	if (!phba->sli4_hba.els_cq || !phba->sli4_hba.els_wq) {11279		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11280				"0530 ELS %s not allocated\n",11281				phba->sli4_hba.els_cq ? "WQ" : "CQ");11282		rc = -ENOMEM;11283		goto out_destroy;11284	}11285	rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,11286			       phba->sli4_hba.els_cq,11287			       phba->sli4_hba.els_wq,11288			       NULL, 0, LPFC_ELS);11289	if (rc) {11290		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11291				"0525 Failed setup of ELS WQ/CQ: rc = 0x%x\n",11292				(uint32_t)rc);11293		goto out_destroy;11294	}11295	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,11296			"2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",11297			phba->sli4_hba.els_wq->queue_id,11298			phba->sli4_hba.els_cq->queue_id);11299 11300	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {11301		/* Set up NVME LS Complete Queue */11302		if (!phba->sli4_hba.nvmels_cq || !phba->sli4_hba.nvmels_wq) {11303			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11304					"6091 LS %s not allocated\n",11305					phba->sli4_hba.nvmels_cq ? "WQ" : "CQ");11306			rc = -ENOMEM;11307			goto out_destroy;11308		}11309		rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,11310				       phba->sli4_hba.nvmels_cq,11311				       phba->sli4_hba.nvmels_wq,11312				       NULL, 0, LPFC_NVME_LS);11313		if (rc) {11314			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11315					"0526 Failed setup of NVVME LS WQ/CQ: "11316					"rc = 0x%x\n", (uint32_t)rc);11317			goto out_destroy;11318		}11319 11320		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,11321				"6096 ELS WQ setup: wq-id=%d, "11322				"parent cq-id=%d\n",11323				phba->sli4_hba.nvmels_wq->queue_id,11324				phba->sli4_hba.nvmels_cq->queue_id);11325	}11326 11327	/*11328	 * Create NVMET Receive Queue (RQ)11329	 */11330	if (phba->nvmet_support) {11331		if ((!phba->sli4_hba.nvmet_cqset) ||11332		    (!phba->sli4_hba.nvmet_mrq_hdr) ||11333		    (!phba->sli4_hba.nvmet_mrq_data)) {11334			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11335					"6130 MRQ CQ Queues not "11336					"allocated\n");11337			rc = -ENOMEM;11338			goto out_destroy;11339		}11340		if (phba->cfg_nvmet_mrq > 1) {11341			rc = lpfc_mrq_create(phba,11342					     phba->sli4_hba.nvmet_mrq_hdr,11343					     phba->sli4_hba.nvmet_mrq_data,11344					     phba->sli4_hba.nvmet_cqset,11345					     LPFC_NVMET);11346			if (rc) {11347				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11348						"6098 Failed setup of NVMET "11349						"MRQ: rc = 0x%x\n",11350						(uint32_t)rc);11351				goto out_destroy;11352			}11353 11354		} else {11355			rc = lpfc_rq_create(phba,11356					    phba->sli4_hba.nvmet_mrq_hdr[0],11357					    phba->sli4_hba.nvmet_mrq_data[0],11358					    phba->sli4_hba.nvmet_cqset[0],11359					    LPFC_NVMET);11360			if (rc) {11361				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11362						"6057 Failed setup of NVMET "11363						"Receive Queue: rc = 0x%x\n",11364						(uint32_t)rc);11365				goto out_destroy;11366			}11367 11368			lpfc_printf_log(11369				phba, KERN_INFO, LOG_INIT,11370				"6099 NVMET RQ setup: hdr-rq-id=%d, "11371				"dat-rq-id=%d parent cq-id=%d\n",11372				phba->sli4_hba.nvmet_mrq_hdr[0]->queue_id,11373				phba->sli4_hba.nvmet_mrq_data[0]->queue_id,11374				phba->sli4_hba.nvmet_cqset[0]->queue_id);11375 11376		}11377	}11378 11379	if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {11380		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11381				"0540 Receive Queue not allocated\n");11382		rc = -ENOMEM;11383		goto out_destroy;11384	}11385 11386	rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,11387			    phba->sli4_hba.els_cq, LPFC_USOL);11388	if (rc) {11389		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11390				"0541 Failed setup of Receive Queue: "11391				"rc = 0x%x\n", (uint32_t)rc);11392		goto out_destroy;11393	}11394 11395	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,11396			"2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "11397			"parent cq-id=%d\n",11398			phba->sli4_hba.hdr_rq->queue_id,11399			phba->sli4_hba.dat_rq->queue_id,11400			phba->sli4_hba.els_cq->queue_id);11401 11402	if (phba->cfg_fcp_imax)11403		usdelay = LPFC_SEC_TO_USEC / phba->cfg_fcp_imax;11404	else11405		usdelay = 0;11406 11407	for (qidx = 0; qidx < phba->cfg_irq_chann;11408	     qidx += LPFC_MAX_EQ_DELAY_EQID_CNT)11409		lpfc_modify_hba_eq_delay(phba, qidx, LPFC_MAX_EQ_DELAY_EQID_CNT,11410					 usdelay);11411 11412	if (phba->sli4_hba.cq_max) {11413		kfree(phba->sli4_hba.cq_lookup);11414		phba->sli4_hba.cq_lookup = kcalloc((phba->sli4_hba.cq_max + 1),11415			sizeof(struct lpfc_queue *), GFP_KERNEL);11416		if (!phba->sli4_hba.cq_lookup) {11417			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11418					"0549 Failed setup of CQ Lookup table: "11419					"size 0x%x\n", phba->sli4_hba.cq_max);11420			rc = -ENOMEM;11421			goto out_destroy;11422		}11423		lpfc_setup_cq_lookup(phba);11424	}11425	return 0;11426 11427out_destroy:11428	lpfc_sli4_queue_unset(phba);11429out_error:11430	return rc;11431}11432 11433/**11434 * lpfc_sli4_queue_unset - Unset all the SLI4 queues11435 * @phba: pointer to lpfc hba data structure.11436 *11437 * This routine is invoked to unset all the SLI4 queues with the FCoE HBA11438 * operation.11439 *11440 * Return codes11441 *      0 - successful11442 *      -ENOMEM - No available memory11443 *      -EIO - The mailbox failed to complete successfully.11444 **/11445void11446lpfc_sli4_queue_unset(struct lpfc_hba *phba)11447{11448	struct lpfc_sli4_hdw_queue *qp;11449	struct lpfc_queue *eq;11450	int qidx;11451 11452	/* Unset mailbox command work queue */11453	if (phba->sli4_hba.mbx_wq)11454		lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);11455 11456	/* Unset NVME LS work queue */11457	if (phba->sli4_hba.nvmels_wq)11458		lpfc_wq_destroy(phba, phba->sli4_hba.nvmels_wq);11459 11460	/* Unset ELS work queue */11461	if (phba->sli4_hba.els_wq)11462		lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);11463 11464	/* Unset unsolicited receive queue */11465	if (phba->sli4_hba.hdr_rq)11466		lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq,11467				phba->sli4_hba.dat_rq);11468 11469	/* Unset mailbox command complete queue */11470	if (phba->sli4_hba.mbx_cq)11471		lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);11472 11473	/* Unset ELS complete queue */11474	if (phba->sli4_hba.els_cq)11475		lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);11476 11477	/* Unset NVME LS complete queue */11478	if (phba->sli4_hba.nvmels_cq)11479		lpfc_cq_destroy(phba, phba->sli4_hba.nvmels_cq);11480 11481	if (phba->nvmet_support) {11482		/* Unset NVMET MRQ queue */11483		if (phba->sli4_hba.nvmet_mrq_hdr) {11484			for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)11485				lpfc_rq_destroy(11486					phba,11487					phba->sli4_hba.nvmet_mrq_hdr[qidx],11488					phba->sli4_hba.nvmet_mrq_data[qidx]);11489		}11490 11491		/* Unset NVMET CQ Set complete queue */11492		if (phba->sli4_hba.nvmet_cqset) {11493			for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)11494				lpfc_cq_destroy(11495					phba, phba->sli4_hba.nvmet_cqset[qidx]);11496		}11497	}11498 11499	/* Unset fast-path SLI4 queues */11500	if (phba->sli4_hba.hdwq) {11501		/* Loop thru all Hardware Queues */11502		for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {11503			/* Destroy the CQ/WQ corresponding to Hardware Queue */11504			qp = &phba->sli4_hba.hdwq[qidx];11505			lpfc_wq_destroy(phba, qp->io_wq);11506			lpfc_cq_destroy(phba, qp->io_cq);11507		}11508		/* Loop thru all IRQ vectors */11509		for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {11510			/* Destroy the EQ corresponding to the IRQ vector */11511			eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;11512			lpfc_eq_destroy(phba, eq);11513		}11514	}11515 11516	kfree(phba->sli4_hba.cq_lookup);11517	phba->sli4_hba.cq_lookup = NULL;11518	phba->sli4_hba.cq_max = 0;11519}11520 11521/**11522 * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool11523 * @phba: pointer to lpfc hba data structure.11524 *11525 * This routine is invoked to allocate and set up a pool of completion queue11526 * events. The body of the completion queue event is a completion queue entry11527 * CQE. For now, this pool is used for the interrupt service routine to queue11528 * the following HBA completion queue events for the worker thread to process:11529 *   - Mailbox asynchronous events11530 *   - Receive queue completion unsolicited events11531 * Later, this can be used for all the slow-path events.11532 *11533 * Return codes11534 *      0 - successful11535 *      -ENOMEM - No available memory11536 **/11537static int11538lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)11539{11540	struct lpfc_cq_event *cq_event;11541	int i;11542 11543	for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {11544		cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);11545		if (!cq_event)11546			goto out_pool_create_fail;11547		list_add_tail(&cq_event->list,11548			      &phba->sli4_hba.sp_cqe_event_pool);11549	}11550	return 0;11551 11552out_pool_create_fail:11553	lpfc_sli4_cq_event_pool_destroy(phba);11554	return -ENOMEM;11555}11556 11557/**11558 * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool11559 * @phba: pointer to lpfc hba data structure.11560 *11561 * This routine is invoked to free the pool of completion queue events at11562 * driver unload time. Note that, it is the responsibility of the driver11563 * cleanup routine to free all the outstanding completion-queue events11564 * allocated from this pool back into the pool before invoking this routine11565 * to destroy the pool.11566 **/11567static void11568lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)11569{11570	struct lpfc_cq_event *cq_event, *next_cq_event;11571 11572	list_for_each_entry_safe(cq_event, next_cq_event,11573				 &phba->sli4_hba.sp_cqe_event_pool, list) {11574		list_del(&cq_event->list);11575		kfree(cq_event);11576	}11577}11578 11579/**11580 * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool11581 * @phba: pointer to lpfc hba data structure.11582 *11583 * This routine is the lock free version of the API invoked to allocate a11584 * completion-queue event from the free pool.11585 *11586 * Return: Pointer to the newly allocated completion-queue event if successful11587 *         NULL otherwise.11588 **/11589struct lpfc_cq_event *11590__lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)11591{11592	struct lpfc_cq_event *cq_event = NULL;11593 11594	list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,11595			 struct lpfc_cq_event, list);11596	return cq_event;11597}11598 11599/**11600 * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool11601 * @phba: pointer to lpfc hba data structure.11602 *11603 * This routine is the lock version of the API invoked to allocate a11604 * completion-queue event from the free pool.11605 *11606 * Return: Pointer to the newly allocated completion-queue event if successful11607 *         NULL otherwise.11608 **/11609struct lpfc_cq_event *11610lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)11611{11612	struct lpfc_cq_event *cq_event;11613	unsigned long iflags;11614 11615	spin_lock_irqsave(&phba->hbalock, iflags);11616	cq_event = __lpfc_sli4_cq_event_alloc(phba);11617	spin_unlock_irqrestore(&phba->hbalock, iflags);11618	return cq_event;11619}11620 11621/**11622 * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool11623 * @phba: pointer to lpfc hba data structure.11624 * @cq_event: pointer to the completion queue event to be freed.11625 *11626 * This routine is the lock free version of the API invoked to release a11627 * completion-queue event back into the free pool.11628 **/11629void11630__lpfc_sli4_cq_event_release(struct lpfc_hba *phba,11631			     struct lpfc_cq_event *cq_event)11632{11633	list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);11634}11635 11636/**11637 * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool11638 * @phba: pointer to lpfc hba data structure.11639 * @cq_event: pointer to the completion queue event to be freed.11640 *11641 * This routine is the lock version of the API invoked to release a11642 * completion-queue event back into the free pool.11643 **/11644void11645lpfc_sli4_cq_event_release(struct lpfc_hba *phba,11646			   struct lpfc_cq_event *cq_event)11647{11648	unsigned long iflags;11649	spin_lock_irqsave(&phba->hbalock, iflags);11650	__lpfc_sli4_cq_event_release(phba, cq_event);11651	spin_unlock_irqrestore(&phba->hbalock, iflags);11652}11653 11654/**11655 * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool11656 * @phba: pointer to lpfc hba data structure.11657 *11658 * This routine is to free all the pending completion-queue events to the11659 * back into the free pool for device reset.11660 **/11661static void11662lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)11663{11664	LIST_HEAD(cq_event_list);11665	struct lpfc_cq_event *cq_event;11666	unsigned long iflags;11667 11668	/* Retrieve all the pending WCQEs from pending WCQE lists */11669 11670	/* Pending ELS XRI abort events */11671	spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);11672	list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,11673			 &cq_event_list);11674	spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);11675 11676	/* Pending asynnc events */11677	spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);11678	list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,11679			 &cq_event_list);11680	spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);11681 11682	while (!list_empty(&cq_event_list)) {11683		list_remove_head(&cq_event_list, cq_event,11684				 struct lpfc_cq_event, list);11685		lpfc_sli4_cq_event_release(phba, cq_event);11686	}11687}11688 11689/**11690 * lpfc_pci_function_reset - Reset pci function.11691 * @phba: pointer to lpfc hba data structure.11692 *11693 * This routine is invoked to request a PCI function reset. It will destroys11694 * all resources assigned to the PCI function which originates this request.11695 *11696 * Return codes11697 *      0 - successful11698 *      -ENOMEM - No available memory11699 *      -EIO - The mailbox failed to complete successfully.11700 **/11701int11702lpfc_pci_function_reset(struct lpfc_hba *phba)11703{11704	LPFC_MBOXQ_t *mboxq;11705	uint32_t rc = 0, if_type;11706	uint32_t shdr_status, shdr_add_status;11707	uint32_t rdy_chk;11708	uint32_t port_reset = 0;11709	union lpfc_sli4_cfg_shdr *shdr;11710	struct lpfc_register reg_data;11711	uint16_t devid;11712 11713	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);11714	switch (if_type) {11715	case LPFC_SLI_INTF_IF_TYPE_0:11716		mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,11717						       GFP_KERNEL);11718		if (!mboxq) {11719			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11720					"0494 Unable to allocate memory for "11721					"issuing SLI_FUNCTION_RESET mailbox "11722					"command\n");11723			return -ENOMEM;11724		}11725 11726		/* Setup PCI function reset mailbox-ioctl command */11727		lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,11728				 LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,11729				 LPFC_SLI4_MBX_EMBED);11730		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);11731		shdr = (union lpfc_sli4_cfg_shdr *)11732			&mboxq->u.mqe.un.sli4_config.header.cfg_shdr;11733		shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);11734		shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,11735					 &shdr->response);11736		mempool_free(mboxq, phba->mbox_mem_pool);11737		if (shdr_status || shdr_add_status || rc) {11738			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11739					"0495 SLI_FUNCTION_RESET mailbox "11740					"failed with status x%x add_status x%x,"11741					" mbx status x%x\n",11742					shdr_status, shdr_add_status, rc);11743			rc = -ENXIO;11744		}11745		break;11746	case LPFC_SLI_INTF_IF_TYPE_2:11747	case LPFC_SLI_INTF_IF_TYPE_6:11748wait:11749		/*11750		 * Poll the Port Status Register and wait for RDY for11751		 * up to 30 seconds. If the port doesn't respond, treat11752		 * it as an error.11753		 */11754		for (rdy_chk = 0; rdy_chk < 1500; rdy_chk++) {11755			if (lpfc_readl(phba->sli4_hba.u.if_type2.11756				STATUSregaddr, &reg_data.word0)) {11757				rc = -ENODEV;11758				goto out;11759			}11760			if (bf_get(lpfc_sliport_status_rdy, &reg_data))11761				break;11762			msleep(20);11763		}11764 11765		if (!bf_get(lpfc_sliport_status_rdy, &reg_data)) {11766			phba->work_status[0] = readl(11767				phba->sli4_hba.u.if_type2.ERR1regaddr);11768			phba->work_status[1] = readl(11769				phba->sli4_hba.u.if_type2.ERR2regaddr);11770			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11771					"2890 Port not ready, port status reg "11772					"0x%x error 1=0x%x, error 2=0x%x\n",11773					reg_data.word0,11774					phba->work_status[0],11775					phba->work_status[1]);11776			rc = -ENODEV;11777			goto out;11778		}11779 11780		if (bf_get(lpfc_sliport_status_pldv, &reg_data))11781			lpfc_pldv_detect = true;11782 11783		if (!port_reset) {11784			/*11785			 * Reset the port now11786			 */11787			reg_data.word0 = 0;11788			bf_set(lpfc_sliport_ctrl_end, &reg_data,11789			       LPFC_SLIPORT_LITTLE_ENDIAN);11790			bf_set(lpfc_sliport_ctrl_ip, &reg_data,11791			       LPFC_SLIPORT_INIT_PORT);11792			writel(reg_data.word0, phba->sli4_hba.u.if_type2.11793			       CTRLregaddr);11794			/* flush */11795			pci_read_config_word(phba->pcidev,11796					     PCI_DEVICE_ID, &devid);11797 11798			port_reset = 1;11799			msleep(20);11800			goto wait;11801		} else if (bf_get(lpfc_sliport_status_rn, &reg_data)) {11802			rc = -ENODEV;11803			goto out;11804		}11805		break;11806 11807	case LPFC_SLI_INTF_IF_TYPE_1:11808	default:11809		break;11810	}11811 11812out:11813	/* Catch the not-ready port failure after a port reset. */11814	if (rc) {11815		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,11816				"3317 HBA not functional: IP Reset Failed "11817				"try: echo fw_reset > board_mode\n");11818		rc = -ENODEV;11819	}11820 11821	return rc;11822}11823 11824/**11825 * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.11826 * @phba: pointer to lpfc hba data structure.11827 *11828 * This routine is invoked to set up the PCI device memory space for device11829 * with SLI-4 interface spec.11830 *11831 * Return codes11832 * 	0 - successful11833 * 	other values - error11834 **/11835static int11836lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)11837{11838	struct pci_dev *pdev = phba->pcidev;11839	unsigned long bar0map_len, bar1map_len, bar2map_len;11840	int error;11841	uint32_t if_type;11842 11843	if (!pdev)11844		return -ENODEV;11845 11846	/* Set the device DMA mask size */11847	error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));11848	if (error)11849		error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));11850	if (error)11851		return error;11852 11853	/*11854	 * The BARs and register set definitions and offset locations are11855	 * dependent on the if_type.11856	 */11857	if (pci_read_config_dword(pdev, LPFC_SLI_INTF,11858				  &phba->sli4_hba.sli_intf.word0)) {11859		return -ENODEV;11860	}11861 11862	/* There is no SLI3 failback for SLI4 devices. */11863	if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=11864	    LPFC_SLI_INTF_VALID) {11865		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,11866				"2894 SLI_INTF reg contents invalid "11867				"sli_intf reg 0x%x\n",11868				phba->sli4_hba.sli_intf.word0);11869		return -ENODEV;11870	}11871 11872	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);11873	/*11874	 * Get the bus address of SLI4 device Bar regions and the11875	 * number of bytes required by each mapping. The mapping of the11876	 * particular PCI BARs regions is dependent on the type of11877	 * SLI4 device.11878	 */11879	if (pci_resource_start(pdev, PCI_64BIT_BAR0)) {11880		phba->pci_bar0_map = pci_resource_start(pdev, PCI_64BIT_BAR0);11881		bar0map_len = pci_resource_len(pdev, PCI_64BIT_BAR0);11882 11883		/*11884		 * Map SLI4 PCI Config Space Register base to a kernel virtual11885		 * addr11886		 */11887		phba->sli4_hba.conf_regs_memmap_p =11888			ioremap(phba->pci_bar0_map, bar0map_len);11889		if (!phba->sli4_hba.conf_regs_memmap_p) {11890			dev_printk(KERN_ERR, &pdev->dev,11891				   "ioremap failed for SLI4 PCI config "11892				   "registers.\n");11893			return -ENODEV;11894		}11895		phba->pci_bar0_memmap_p = phba->sli4_hba.conf_regs_memmap_p;11896		/* Set up BAR0 PCI config space register memory map */11897		lpfc_sli4_bar0_register_memmap(phba, if_type);11898	} else {11899		phba->pci_bar0_map = pci_resource_start(pdev, 1);11900		bar0map_len = pci_resource_len(pdev, 1);11901		if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {11902			dev_printk(KERN_ERR, &pdev->dev,11903			   "FATAL - No BAR0 mapping for SLI4, if_type 2\n");11904			return -ENODEV;11905		}11906		phba->sli4_hba.conf_regs_memmap_p =11907				ioremap(phba->pci_bar0_map, bar0map_len);11908		if (!phba->sli4_hba.conf_regs_memmap_p) {11909			dev_printk(KERN_ERR, &pdev->dev,11910				"ioremap failed for SLI4 PCI config "11911				"registers.\n");11912			return -ENODEV;11913		}11914		lpfc_sli4_bar0_register_memmap(phba, if_type);11915	}11916 11917	if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {11918		if (pci_resource_start(pdev, PCI_64BIT_BAR2)) {11919			/*11920			 * Map SLI4 if type 0 HBA Control Register base to a11921			 * kernel virtual address and setup the registers.11922			 */11923			phba->pci_bar1_map = pci_resource_start(pdev,11924								PCI_64BIT_BAR2);11925			bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);11926			phba->sli4_hba.ctrl_regs_memmap_p =11927					ioremap(phba->pci_bar1_map,11928						bar1map_len);11929			if (!phba->sli4_hba.ctrl_regs_memmap_p) {11930				dev_err(&pdev->dev,11931					   "ioremap failed for SLI4 HBA "11932					    "control registers.\n");11933				error = -ENOMEM;11934				goto out_iounmap_conf;11935			}11936			phba->pci_bar2_memmap_p =11937					 phba->sli4_hba.ctrl_regs_memmap_p;11938			lpfc_sli4_bar1_register_memmap(phba, if_type);11939		} else {11940			error = -ENOMEM;11941			goto out_iounmap_conf;11942		}11943	}11944 11945	if ((if_type == LPFC_SLI_INTF_IF_TYPE_6) &&11946	    (pci_resource_start(pdev, PCI_64BIT_BAR2))) {11947		/*11948		 * Map SLI4 if type 6 HBA Doorbell Register base to a kernel11949		 * virtual address and setup the registers.11950		 */11951		phba->pci_bar1_map = pci_resource_start(pdev, PCI_64BIT_BAR2);11952		bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);11953		phba->sli4_hba.drbl_regs_memmap_p =11954				ioremap(phba->pci_bar1_map, bar1map_len);11955		if (!phba->sli4_hba.drbl_regs_memmap_p) {11956			dev_err(&pdev->dev,11957			   "ioremap failed for SLI4 HBA doorbell registers.\n");11958			error = -ENOMEM;11959			goto out_iounmap_conf;11960		}11961		phba->pci_bar2_memmap_p = phba->sli4_hba.drbl_regs_memmap_p;11962		lpfc_sli4_bar1_register_memmap(phba, if_type);11963	}11964 11965	if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {11966		if (pci_resource_start(pdev, PCI_64BIT_BAR4)) {11967			/*11968			 * Map SLI4 if type 0 HBA Doorbell Register base to11969			 * a kernel virtual address and setup the registers.11970			 */11971			phba->pci_bar2_map = pci_resource_start(pdev,11972								PCI_64BIT_BAR4);11973			bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);11974			phba->sli4_hba.drbl_regs_memmap_p =11975					ioremap(phba->pci_bar2_map,11976						bar2map_len);11977			if (!phba->sli4_hba.drbl_regs_memmap_p) {11978				dev_err(&pdev->dev,11979					   "ioremap failed for SLI4 HBA"11980					   " doorbell registers.\n");11981				error = -ENOMEM;11982				goto out_iounmap_ctrl;11983			}11984			phba->pci_bar4_memmap_p =11985					phba->sli4_hba.drbl_regs_memmap_p;11986			error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);11987			if (error)11988				goto out_iounmap_all;11989		} else {11990			error = -ENOMEM;11991			goto out_iounmap_ctrl;11992		}11993	}11994 11995	if (if_type == LPFC_SLI_INTF_IF_TYPE_6 &&11996	    pci_resource_start(pdev, PCI_64BIT_BAR4)) {11997		/*11998		 * Map SLI4 if type 6 HBA DPP Register base to a kernel11999		 * virtual address and setup the registers.12000		 */12001		phba->pci_bar2_map = pci_resource_start(pdev, PCI_64BIT_BAR4);12002		bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);12003		phba->sli4_hba.dpp_regs_memmap_p =12004				ioremap(phba->pci_bar2_map, bar2map_len);12005		if (!phba->sli4_hba.dpp_regs_memmap_p) {12006			dev_err(&pdev->dev,12007			   "ioremap failed for SLI4 HBA dpp registers.\n");12008			error = -ENOMEM;12009			goto out_iounmap_all;12010		}12011		phba->pci_bar4_memmap_p = phba->sli4_hba.dpp_regs_memmap_p;12012	}12013 12014	/* Set up the EQ/CQ register handeling functions now */12015	switch (if_type) {12016	case LPFC_SLI_INTF_IF_TYPE_0:12017	case LPFC_SLI_INTF_IF_TYPE_2:12018		phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_eq_clr_intr;12019		phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_write_eq_db;12020		phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_write_cq_db;12021		break;12022	case LPFC_SLI_INTF_IF_TYPE_6:12023		phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_if6_eq_clr_intr;12024		phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_if6_write_eq_db;12025		phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_if6_write_cq_db;12026		break;12027	default:12028		break;12029	}12030 12031	return 0;12032 12033out_iounmap_all:12034	if (phba->sli4_hba.drbl_regs_memmap_p)12035		iounmap(phba->sli4_hba.drbl_regs_memmap_p);12036out_iounmap_ctrl:12037	if (phba->sli4_hba.ctrl_regs_memmap_p)12038		iounmap(phba->sli4_hba.ctrl_regs_memmap_p);12039out_iounmap_conf:12040	iounmap(phba->sli4_hba.conf_regs_memmap_p);12041 12042	return error;12043}12044 12045/**12046 * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.12047 * @phba: pointer to lpfc hba data structure.12048 *12049 * This routine is invoked to unset the PCI device memory space for device12050 * with SLI-4 interface spec.12051 **/12052static void12053lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)12054{12055	uint32_t if_type;12056	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);12057 12058	switch (if_type) {12059	case LPFC_SLI_INTF_IF_TYPE_0:12060		iounmap(phba->sli4_hba.drbl_regs_memmap_p);12061		iounmap(phba->sli4_hba.ctrl_regs_memmap_p);12062		iounmap(phba->sli4_hba.conf_regs_memmap_p);12063		break;12064	case LPFC_SLI_INTF_IF_TYPE_2:12065		iounmap(phba->sli4_hba.conf_regs_memmap_p);12066		break;12067	case LPFC_SLI_INTF_IF_TYPE_6:12068		iounmap(phba->sli4_hba.drbl_regs_memmap_p);12069		iounmap(phba->sli4_hba.conf_regs_memmap_p);12070		if (phba->sli4_hba.dpp_regs_memmap_p)12071			iounmap(phba->sli4_hba.dpp_regs_memmap_p);12072		break;12073	case LPFC_SLI_INTF_IF_TYPE_1:12074		break;12075	default:12076		dev_printk(KERN_ERR, &phba->pcidev->dev,12077			   "FATAL - unsupported SLI4 interface type - %d\n",12078			   if_type);12079		break;12080	}12081}12082 12083/**12084 * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device12085 * @phba: pointer to lpfc hba data structure.12086 *12087 * This routine is invoked to enable the MSI-X interrupt vectors to device12088 * with SLI-3 interface specs.12089 *12090 * Return codes12091 *   0 - successful12092 *   other values - error12093 **/12094static int12095lpfc_sli_enable_msix(struct lpfc_hba *phba)12096{12097	int rc;12098	LPFC_MBOXQ_t *pmb;12099 12100	/* Set up MSI-X multi-message vectors */12101	rc = pci_alloc_irq_vectors(phba->pcidev,12102			LPFC_MSIX_VECTORS, LPFC_MSIX_VECTORS, PCI_IRQ_MSIX);12103	if (rc < 0) {12104		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,12105				"0420 PCI enable MSI-X failed (%d)\n", rc);12106		goto vec_fail_out;12107	}12108 12109	/*12110	 * Assign MSI-X vectors to interrupt handlers12111	 */12112 12113	/* vector-0 is associated to slow-path handler */12114	rc = request_irq(pci_irq_vector(phba->pcidev, 0),12115			 &lpfc_sli_sp_intr_handler, 0,12116			 LPFC_SP_DRIVER_HANDLER_NAME, phba);12117	if (rc) {12118		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,12119				"0421 MSI-X slow-path request_irq failed "12120				"(%d)\n", rc);12121		goto msi_fail_out;12122	}12123 12124	/* vector-1 is associated to fast-path handler */12125	rc = request_irq(pci_irq_vector(phba->pcidev, 1),12126			 &lpfc_sli_fp_intr_handler, 0,12127			 LPFC_FP_DRIVER_HANDLER_NAME, phba);12128 12129	if (rc) {12130		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,12131				"0429 MSI-X fast-path request_irq failed "12132				"(%d)\n", rc);12133		goto irq_fail_out;12134	}12135 12136	/*12137	 * Configure HBA MSI-X attention conditions to messages12138	 */12139	pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);12140 12141	if (!pmb) {12142		rc = -ENOMEM;12143		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,12144				"0474 Unable to allocate memory for issuing "12145				"MBOX_CONFIG_MSI command\n");12146		goto mem_fail_out;12147	}12148	rc = lpfc_config_msi(phba, pmb);12149	if (rc)12150		goto mbx_fail_out;12151	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);12152	if (rc != MBX_SUCCESS) {12153		lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,12154				"0351 Config MSI mailbox command failed, "12155				"mbxCmd x%x, mbxStatus x%x\n",12156				pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);12157		goto mbx_fail_out;12158	}12159 12160	/* Free memory allocated for mailbox command */12161	mempool_free(pmb, phba->mbox_mem_pool);12162	return rc;12163 12164mbx_fail_out:12165	/* Free memory allocated for mailbox command */12166	mempool_free(pmb, phba->mbox_mem_pool);12167 12168mem_fail_out:12169	/* free the irq already requested */12170	free_irq(pci_irq_vector(phba->pcidev, 1), phba);12171 12172irq_fail_out:12173	/* free the irq already requested */12174	free_irq(pci_irq_vector(phba->pcidev, 0), phba);12175 12176msi_fail_out:12177	/* Unconfigure MSI-X capability structure */12178	pci_free_irq_vectors(phba->pcidev);12179 12180vec_fail_out:12181	return rc;12182}12183 12184/**12185 * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.12186 * @phba: pointer to lpfc hba data structure.12187 *12188 * This routine is invoked to enable the MSI interrupt mode to device with12189 * SLI-3 interface spec. The kernel function pci_enable_msi() is called to12190 * enable the MSI vector. The device driver is responsible for calling the12191 * request_irq() to register MSI vector with a interrupt the handler, which12192 * is done in this function.12193 *12194 * Return codes12195 * 	0 - successful12196 * 	other values - error12197 */12198static int12199lpfc_sli_enable_msi(struct lpfc_hba *phba)12200{12201	int rc;12202 12203	rc = pci_enable_msi(phba->pcidev);12204	if (!rc)12205		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,12206				"0012 PCI enable MSI mode success.\n");12207	else {12208		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,12209				"0471 PCI enable MSI mode failed (%d)\n", rc);12210		return rc;12211	}12212 12213	rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,12214			 0, LPFC_DRIVER_NAME, phba);12215	if (rc) {12216		pci_disable_msi(phba->pcidev);12217		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,12218				"0478 MSI request_irq failed (%d)\n", rc);12219	}12220	return rc;12221}12222 12223/**12224 * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.12225 * @phba: pointer to lpfc hba data structure.12226 * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).12227 *12228 * This routine is invoked to enable device interrupt and associate driver's12229 * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface12230 * spec. Depends on the interrupt mode configured to the driver, the driver12231 * will try to fallback from the configured interrupt mode to an interrupt12232 * mode which is supported by the platform, kernel, and device in the order12233 * of:12234 * MSI-X -> MSI -> IRQ.12235 *12236 * Return codes12237 *   0 - successful12238 *   other values - error12239 **/12240static uint32_t12241lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)12242{12243	uint32_t intr_mode = LPFC_INTR_ERROR;12244	int retval;12245 12246	/* Need to issue conf_port mbox cmd before conf_msi mbox cmd */12247	retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);12248	if (retval)12249		return intr_mode;12250	clear_bit(HBA_NEEDS_CFG_PORT, &phba->hba_flag);12251 12252	if (cfg_mode == 2) {12253		/* Now, try to enable MSI-X interrupt mode */12254		retval = lpfc_sli_enable_msix(phba);12255		if (!retval) {12256			/* Indicate initialization to MSI-X mode */12257			phba->intr_type = MSIX;12258			intr_mode = 2;12259		}12260	}12261 12262	/* Fallback to MSI if MSI-X initialization failed */12263	if (cfg_mode >= 1 && phba->intr_type == NONE) {12264		retval = lpfc_sli_enable_msi(phba);12265		if (!retval) {12266			/* Indicate initialization to MSI mode */12267			phba->intr_type = MSI;12268			intr_mode = 1;12269		}12270	}12271 12272	/* Fallback to INTx if both MSI-X/MSI initalization failed */12273	if (phba->intr_type == NONE) {12274		retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,12275				     IRQF_SHARED, LPFC_DRIVER_NAME, phba);12276		if (!retval) {12277			/* Indicate initialization to INTx mode */12278			phba->intr_type = INTx;12279			intr_mode = 0;12280		}12281	}12282	return intr_mode;12283}12284 12285/**12286 * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.12287 * @phba: pointer to lpfc hba data structure.12288 *12289 * This routine is invoked to disable device interrupt and disassociate the12290 * driver's interrupt handler(s) from interrupt vector(s) to device with12291 * SLI-3 interface spec. Depending on the interrupt mode, the driver will12292 * release the interrupt vector(s) for the message signaled interrupt.12293 **/12294static void12295lpfc_sli_disable_intr(struct lpfc_hba *phba)12296{12297	int nr_irqs, i;12298 12299	if (phba->intr_type == MSIX)12300		nr_irqs = LPFC_MSIX_VECTORS;12301	else12302		nr_irqs = 1;12303 12304	for (i = 0; i < nr_irqs; i++)12305		free_irq(pci_irq_vector(phba->pcidev, i), phba);12306	pci_free_irq_vectors(phba->pcidev);12307 12308	/* Reset interrupt management states */12309	phba->intr_type = NONE;12310	phba->sli.slistat.sli_intr = 0;12311}12312 12313/**12314 * lpfc_find_cpu_handle - Find the CPU that corresponds to the specified Queue12315 * @phba: pointer to lpfc hba data structure.12316 * @id: EQ vector index or Hardware Queue index12317 * @match: LPFC_FIND_BY_EQ = match by EQ12318 *         LPFC_FIND_BY_HDWQ = match by Hardware Queue12319 * Return the CPU that matches the selection criteria12320 */12321static uint16_t12322lpfc_find_cpu_handle(struct lpfc_hba *phba, uint16_t id, int match)12323{12324	struct lpfc_vector_map_info *cpup;12325	int cpu;12326 12327	/* Loop through all CPUs */12328	for_each_present_cpu(cpu) {12329		cpup = &phba->sli4_hba.cpu_map[cpu];12330 12331		/* If we are matching by EQ, there may be multiple CPUs using12332		 * using the same vector, so select the one with12333		 * LPFC_CPU_FIRST_IRQ set.12334		 */12335		if ((match == LPFC_FIND_BY_EQ) &&12336		    (cpup->flag & LPFC_CPU_FIRST_IRQ) &&12337		    (cpup->eq == id))12338			return cpu;12339 12340		/* If matching by HDWQ, select the first CPU that matches */12341		if ((match == LPFC_FIND_BY_HDWQ) && (cpup->hdwq == id))12342			return cpu;12343	}12344	return 0;12345}12346 12347#ifdef CONFIG_X8612348/**12349 * lpfc_find_hyper - Determine if the CPU map entry is hyper-threaded12350 * @phba: pointer to lpfc hba data structure.12351 * @cpu: CPU map index12352 * @phys_id: CPU package physical id12353 * @core_id: CPU core id12354 */12355static int12356lpfc_find_hyper(struct lpfc_hba *phba, int cpu,12357		uint16_t phys_id, uint16_t core_id)12358{12359	struct lpfc_vector_map_info *cpup;12360	int idx;12361 12362	for_each_present_cpu(idx) {12363		cpup = &phba->sli4_hba.cpu_map[idx];12364		/* Does the cpup match the one we are looking for */12365		if ((cpup->phys_id == phys_id) &&12366		    (cpup->core_id == core_id) &&12367		    (cpu != idx))12368			return 1;12369	}12370	return 0;12371}12372#endif12373 12374/*12375 * lpfc_assign_eq_map_info - Assigns eq for vector_map structure12376 * @phba: pointer to lpfc hba data structure.12377 * @eqidx: index for eq and irq vector12378 * @flag: flags to set for vector_map structure12379 * @cpu: cpu used to index vector_map structure12380 *12381 * The routine assigns eq info into vector_map structure12382 */12383static inline void12384lpfc_assign_eq_map_info(struct lpfc_hba *phba, uint16_t eqidx, uint16_t flag,12385			unsigned int cpu)12386{12387	struct lpfc_vector_map_info *cpup = &phba->sli4_hba.cpu_map[cpu];12388	struct lpfc_hba_eq_hdl *eqhdl = lpfc_get_eq_hdl(eqidx);12389 12390	cpup->eq = eqidx;12391	cpup->flag |= flag;12392 12393	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,12394			"3336 Set Affinity: CPU %d irq %d eq %d flag x%x\n",12395			cpu, eqhdl->irq, cpup->eq, cpup->flag);12396}12397 12398/**12399 * lpfc_cpu_map_array_init - Initialize cpu_map structure12400 * @phba: pointer to lpfc hba data structure.12401 *12402 * The routine initializes the cpu_map array structure12403 */12404static void12405lpfc_cpu_map_array_init(struct lpfc_hba *phba)12406{12407	struct lpfc_vector_map_info *cpup;12408	struct lpfc_eq_intr_info *eqi;12409	int cpu;12410 12411	for_each_possible_cpu(cpu) {12412		cpup = &phba->sli4_hba.cpu_map[cpu];12413		cpup->phys_id = LPFC_VECTOR_MAP_EMPTY;12414		cpup->core_id = LPFC_VECTOR_MAP_EMPTY;12415		cpup->hdwq = LPFC_VECTOR_MAP_EMPTY;12416		cpup->eq = LPFC_VECTOR_MAP_EMPTY;12417		cpup->flag = 0;12418		eqi = per_cpu_ptr(phba->sli4_hba.eq_info, cpu);12419		INIT_LIST_HEAD(&eqi->list);12420		eqi->icnt = 0;12421	}12422}12423 12424/**12425 * lpfc_hba_eq_hdl_array_init - Initialize hba_eq_hdl structure12426 * @phba: pointer to lpfc hba data structure.12427 *12428 * The routine initializes the hba_eq_hdl array structure12429 */12430static void12431lpfc_hba_eq_hdl_array_init(struct lpfc_hba *phba)12432{12433	struct lpfc_hba_eq_hdl *eqhdl;12434	int i;12435 12436	for (i = 0; i < phba->cfg_irq_chann; i++) {12437		eqhdl = lpfc_get_eq_hdl(i);12438		eqhdl->irq = LPFC_IRQ_EMPTY;12439		eqhdl->phba = phba;12440	}12441}12442 12443/**12444 * lpfc_cpu_affinity_check - Check vector CPU affinity mappings12445 * @phba: pointer to lpfc hba data structure.12446 * @vectors: number of msix vectors allocated.12447 *12448 * The routine will figure out the CPU affinity assignment for every12449 * MSI-X vector allocated for the HBA.12450 * In addition, the CPU to IO channel mapping will be calculated12451 * and the phba->sli4_hba.cpu_map array will reflect this.12452 */12453static void12454lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)12455{12456	int i, cpu, idx, next_idx, new_cpu, start_cpu, first_cpu;12457	int max_phys_id, min_phys_id;12458	int max_core_id, min_core_id;12459	struct lpfc_vector_map_info *cpup;12460	struct lpfc_vector_map_info *new_cpup;12461#ifdef CONFIG_SCSI_LPFC_DEBUG_FS12462	struct lpfc_hdwq_stat *c_stat;12463#endif12464 12465	max_phys_id = 0;12466	min_phys_id = LPFC_VECTOR_MAP_EMPTY;12467	max_core_id = 0;12468	min_core_id = LPFC_VECTOR_MAP_EMPTY;12469 12470	/* Update CPU map with physical id and core id of each CPU */12471	for_each_present_cpu(cpu) {12472		cpup = &phba->sli4_hba.cpu_map[cpu];12473#ifdef CONFIG_X8612474		cpup->phys_id = topology_physical_package_id(cpu);12475		cpup->core_id = topology_core_id(cpu);12476		if (lpfc_find_hyper(phba, cpu, cpup->phys_id, cpup->core_id))12477			cpup->flag |= LPFC_CPU_MAP_HYPER;12478#else12479		/* No distinction between CPUs for other platforms */12480		cpup->phys_id = 0;12481		cpup->core_id = cpu;12482#endif12483 12484		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,12485				"3328 CPU %d physid %d coreid %d flag x%x\n",12486				cpu, cpup->phys_id, cpup->core_id, cpup->flag);12487 12488		if (cpup->phys_id > max_phys_id)12489			max_phys_id = cpup->phys_id;12490		if (cpup->phys_id < min_phys_id)12491			min_phys_id = cpup->phys_id;12492 12493		if (cpup->core_id > max_core_id)12494			max_core_id = cpup->core_id;12495		if (cpup->core_id < min_core_id)12496			min_core_id = cpup->core_id;12497	}12498 12499	/* After looking at each irq vector assigned to this pcidev, its12500	 * possible to see that not ALL CPUs have been accounted for.12501	 * Next we will set any unassigned (unaffinitized) cpu map12502	 * entries to a IRQ on the same phys_id.12503	 */12504	first_cpu = cpumask_first(cpu_present_mask);12505	start_cpu = first_cpu;12506 12507	for_each_present_cpu(cpu) {12508		cpup = &phba->sli4_hba.cpu_map[cpu];12509 12510		/* Is this CPU entry unassigned */12511		if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {12512			/* Mark CPU as IRQ not assigned by the kernel */12513			cpup->flag |= LPFC_CPU_MAP_UNASSIGN;12514 12515			/* If so, find a new_cpup that is on the SAME12516			 * phys_id as cpup. start_cpu will start where we12517			 * left off so all unassigned entries don't get assgined12518			 * the IRQ of the first entry.12519			 */12520			new_cpu = start_cpu;12521			for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {12522				new_cpup = &phba->sli4_hba.cpu_map[new_cpu];12523				if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&12524				    (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY) &&12525				    (new_cpup->phys_id == cpup->phys_id))12526					goto found_same;12527				new_cpu = lpfc_next_present_cpu(new_cpu);12528			}12529			/* At this point, we leave the CPU as unassigned */12530			continue;12531found_same:12532			/* We found a matching phys_id, so copy the IRQ info */12533			cpup->eq = new_cpup->eq;12534 12535			/* Bump start_cpu to the next slot to minmize the12536			 * chance of having multiple unassigned CPU entries12537			 * selecting the same IRQ.12538			 */12539			start_cpu = lpfc_next_present_cpu(new_cpu);12540 12541			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,12542					"3337 Set Affinity: CPU %d "12543					"eq %d from peer cpu %d same "12544					"phys_id (%d)\n",12545					cpu, cpup->eq, new_cpu,12546					cpup->phys_id);12547		}12548	}12549 12550	/* Set any unassigned cpu map entries to a IRQ on any phys_id */12551	start_cpu = first_cpu;12552 12553	for_each_present_cpu(cpu) {12554		cpup = &phba->sli4_hba.cpu_map[cpu];12555 12556		/* Is this entry unassigned */12557		if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {12558			/* Mark it as IRQ not assigned by the kernel */12559			cpup->flag |= LPFC_CPU_MAP_UNASSIGN;12560 12561			/* If so, find a new_cpup thats on ANY phys_id12562			 * as the cpup. start_cpu will start where we12563			 * left off so all unassigned entries don't get12564			 * assigned the IRQ of the first entry.12565			 */12566			new_cpu = start_cpu;12567			for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {12568				new_cpup = &phba->sli4_hba.cpu_map[new_cpu];12569				if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&12570				    (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY))12571					goto found_any;12572				new_cpu = lpfc_next_present_cpu(new_cpu);12573			}12574			/* We should never leave an entry unassigned */12575			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,12576					"3339 Set Affinity: CPU %d "12577					"eq %d UNASSIGNED\n",12578					cpup->hdwq, cpup->eq);12579			continue;12580found_any:12581			/* We found an available entry, copy the IRQ info */12582			cpup->eq = new_cpup->eq;12583 12584			/* Bump start_cpu to the next slot to minmize the12585			 * chance of having multiple unassigned CPU entries12586			 * selecting the same IRQ.12587			 */12588			start_cpu = lpfc_next_present_cpu(new_cpu);12589 12590			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,12591					"3338 Set Affinity: CPU %d "12592					"eq %d from peer cpu %d (%d/%d)\n",12593					cpu, cpup->eq, new_cpu,12594					new_cpup->phys_id, new_cpup->core_id);12595		}12596	}12597 12598	/* Assign hdwq indices that are unique across all cpus in the map12599	 * that are also FIRST_CPUs.12600	 */12601	idx = 0;12602	for_each_present_cpu(cpu) {12603		cpup = &phba->sli4_hba.cpu_map[cpu];12604 12605		/* Only FIRST IRQs get a hdwq index assignment. */12606		if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))12607			continue;12608 12609		/* 1 to 1, the first LPFC_CPU_FIRST_IRQ cpus to a unique hdwq */12610		cpup->hdwq = idx;12611		idx++;12612		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,12613				"3333 Set Affinity: CPU %d (phys %d core %d): "12614				"hdwq %d eq %d flg x%x\n",12615				cpu, cpup->phys_id, cpup->core_id,12616				cpup->hdwq, cpup->eq, cpup->flag);12617	}12618	/* Associate a hdwq with each cpu_map entry12619	 * This will be 1 to 1 - hdwq to cpu, unless there are less12620	 * hardware queues then CPUs. For that case we will just round-robin12621	 * the available hardware queues as they get assigned to CPUs.12622	 * The next_idx is the idx from the FIRST_CPU loop above to account12623	 * for irq_chann < hdwq.  The idx is used for round-robin assignments12624	 * and needs to start at 0.12625	 */12626	next_idx = idx;12627	start_cpu = 0;12628	idx = 0;12629	for_each_present_cpu(cpu) {12630		cpup = &phba->sli4_hba.cpu_map[cpu];12631 12632		/* FIRST cpus are already mapped. */12633		if (cpup->flag & LPFC_CPU_FIRST_IRQ)12634			continue;12635 12636		/* If the cfg_irq_chann < cfg_hdw_queue, set the hdwq12637		 * of the unassigned cpus to the next idx so that all12638		 * hdw queues are fully utilized.12639		 */12640		if (next_idx < phba->cfg_hdw_queue) {12641			cpup->hdwq = next_idx;12642			next_idx++;12643			continue;12644		}12645 12646		/* Not a First CPU and all hdw_queues are used.  Reuse a12647		 * Hardware Queue for another CPU, so be smart about it12648		 * and pick one that has its IRQ/EQ mapped to the same phys_id12649		 * (CPU package) and core_id.12650		 */12651		new_cpu = start_cpu;12652		for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {12653			new_cpup = &phba->sli4_hba.cpu_map[new_cpu];12654			if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&12655			    new_cpup->phys_id == cpup->phys_id &&12656			    new_cpup->core_id == cpup->core_id) {12657				goto found_hdwq;12658			}12659			new_cpu = lpfc_next_present_cpu(new_cpu);12660		}12661 12662		/* If we can't match both phys_id and core_id,12663		 * settle for just a phys_id match.12664		 */12665		new_cpu = start_cpu;12666		for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {12667			new_cpup = &phba->sli4_hba.cpu_map[new_cpu];12668			if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&12669			    new_cpup->phys_id == cpup->phys_id)12670				goto found_hdwq;12671			new_cpu = lpfc_next_present_cpu(new_cpu);12672		}12673 12674		/* Otherwise just round robin on cfg_hdw_queue */12675		cpup->hdwq = idx % phba->cfg_hdw_queue;12676		idx++;12677		goto logit;12678 found_hdwq:12679		/* We found an available entry, copy the IRQ info */12680		start_cpu = lpfc_next_present_cpu(new_cpu);12681		cpup->hdwq = new_cpup->hdwq;12682 logit:12683		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,12684				"3335 Set Affinity: CPU %d (phys %d core %d): "12685				"hdwq %d eq %d flg x%x\n",12686				cpu, cpup->phys_id, cpup->core_id,12687				cpup->hdwq, cpup->eq, cpup->flag);12688	}12689 12690	/*12691	 * Initialize the cpu_map slots for not-present cpus in case12692	 * a cpu is hot-added. Perform a simple hdwq round robin assignment.12693	 */12694	idx = 0;12695	for_each_possible_cpu(cpu) {12696		cpup = &phba->sli4_hba.cpu_map[cpu];12697#ifdef CONFIG_SCSI_LPFC_DEBUG_FS12698		c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, cpu);12699		c_stat->hdwq_no = cpup->hdwq;12700#endif12701		if (cpup->hdwq != LPFC_VECTOR_MAP_EMPTY)12702			continue;12703 12704		cpup->hdwq = idx++ % phba->cfg_hdw_queue;12705#ifdef CONFIG_SCSI_LPFC_DEBUG_FS12706		c_stat->hdwq_no = cpup->hdwq;12707#endif12708		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,12709				"3340 Set Affinity: not present "12710				"CPU %d hdwq %d\n",12711				cpu, cpup->hdwq);12712	}12713 12714	/* The cpu_map array will be used later during initialization12715	 * when EQ / CQ / WQs are allocated and configured.12716	 */12717	return;12718}12719 12720/**12721 * lpfc_cpuhp_get_eq12722 *12723 * @phba:   pointer to lpfc hba data structure.12724 * @cpu:    cpu going offline12725 * @eqlist: eq list to append to12726 */12727static int12728lpfc_cpuhp_get_eq(struct lpfc_hba *phba, unsigned int cpu,12729		  struct list_head *eqlist)12730{12731	const struct cpumask *maskp;12732	struct lpfc_queue *eq;12733	struct cpumask *tmp;12734	u16 idx;12735 12736	tmp = kzalloc(cpumask_size(), GFP_KERNEL);12737	if (!tmp)12738		return -ENOMEM;12739 12740	for (idx = 0; idx < phba->cfg_irq_chann; idx++) {12741		maskp = pci_irq_get_affinity(phba->pcidev, idx);12742		if (!maskp)12743			continue;12744		/*12745		 * if irq is not affinitized to the cpu going12746		 * then we don't need to poll the eq attached12747		 * to it.12748		 */12749		if (!cpumask_and(tmp, maskp, cpumask_of(cpu)))12750			continue;12751		/* get the cpus that are online and are affini-12752		 * tized to this irq vector.  If the count is12753		 * more than 1 then cpuhp is not going to shut-12754		 * down this vector.  Since this cpu has not12755		 * gone offline yet, we need >1.12756		 */12757		cpumask_and(tmp, maskp, cpu_online_mask);12758		if (cpumask_weight(tmp) > 1)12759			continue;12760 12761		/* Now that we have an irq to shutdown, get the eq12762		 * mapped to this irq.  Note: multiple hdwq's in12763		 * the software can share an eq, but eventually12764		 * only eq will be mapped to this vector12765		 */12766		eq = phba->sli4_hba.hba_eq_hdl[idx].eq;12767		list_add(&eq->_poll_list, eqlist);12768	}12769	kfree(tmp);12770	return 0;12771}12772 12773static void __lpfc_cpuhp_remove(struct lpfc_hba *phba)12774{12775	if (phba->sli_rev != LPFC_SLI_REV4)12776		return;12777 12778	cpuhp_state_remove_instance_nocalls(lpfc_cpuhp_state,12779					    &phba->cpuhp);12780	/*12781	 * unregistering the instance doesn't stop the polling12782	 * timer. Wait for the poll timer to retire.12783	 */12784	synchronize_rcu();12785	del_timer_sync(&phba->cpuhp_poll_timer);12786}12787 12788static void lpfc_cpuhp_remove(struct lpfc_hba *phba)12789{12790	if (phba->pport &&12791	    test_bit(FC_OFFLINE_MODE, &phba->pport->fc_flag))12792		return;12793 12794	__lpfc_cpuhp_remove(phba);12795}12796 12797static void lpfc_cpuhp_add(struct lpfc_hba *phba)12798{12799	if (phba->sli_rev != LPFC_SLI_REV4)12800		return;12801 12802	rcu_read_lock();12803 12804	if (!list_empty(&phba->poll_list))12805		mod_timer(&phba->cpuhp_poll_timer,12806			  jiffies + msecs_to_jiffies(LPFC_POLL_HB));12807 12808	rcu_read_unlock();12809 12810	cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state,12811					 &phba->cpuhp);12812}12813 12814static int __lpfc_cpuhp_checks(struct lpfc_hba *phba, int *retval)12815{12816	if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) {12817		*retval = -EAGAIN;12818		return true;12819	}12820 12821	if (phba->sli_rev != LPFC_SLI_REV4) {12822		*retval = 0;12823		return true;12824	}12825 12826	/* proceed with the hotplug */12827	return false;12828}12829 12830/**12831 * lpfc_irq_set_aff - set IRQ affinity12832 * @eqhdl: EQ handle12833 * @cpu: cpu to set affinity12834 *12835 **/12836static inline void12837lpfc_irq_set_aff(struct lpfc_hba_eq_hdl *eqhdl, unsigned int cpu)12838{12839	cpumask_clear(&eqhdl->aff_mask);12840	cpumask_set_cpu(cpu, &eqhdl->aff_mask);12841	irq_set_status_flags(eqhdl->irq, IRQ_NO_BALANCING);12842	irq_set_affinity(eqhdl->irq, &eqhdl->aff_mask);12843}12844 12845/**12846 * lpfc_irq_clear_aff - clear IRQ affinity12847 * @eqhdl: EQ handle12848 *12849 **/12850static inline void12851lpfc_irq_clear_aff(struct lpfc_hba_eq_hdl *eqhdl)12852{12853	cpumask_clear(&eqhdl->aff_mask);12854	irq_clear_status_flags(eqhdl->irq, IRQ_NO_BALANCING);12855}12856 12857/**12858 * lpfc_irq_rebalance - rebalances IRQ affinity according to cpuhp event12859 * @phba: pointer to HBA context object.12860 * @cpu: cpu going offline/online12861 * @offline: true, cpu is going offline. false, cpu is coming online.12862 *12863 * If cpu is going offline, we'll try our best effort to find the next12864 * online cpu on the phba's original_mask and migrate all offlining IRQ12865 * affinities.12866 *12867 * If cpu is coming online, reaffinitize the IRQ back to the onlining cpu.12868 *12869 * Note: Call only if NUMA or NHT mode is enabled, otherwise rely on12870 *	 PCI_IRQ_AFFINITY to auto-manage IRQ affinity.12871 *12872 **/12873static void12874lpfc_irq_rebalance(struct lpfc_hba *phba, unsigned int cpu, bool offline)12875{12876	struct lpfc_vector_map_info *cpup;12877	struct cpumask *aff_mask;12878	unsigned int cpu_select, cpu_next, idx;12879	const struct cpumask *orig_mask;12880 12881	if (phba->irq_chann_mode == NORMAL_MODE)12882		return;12883 12884	orig_mask = &phba->sli4_hba.irq_aff_mask;12885 12886	if (!cpumask_test_cpu(cpu, orig_mask))12887		return;12888 12889	cpup = &phba->sli4_hba.cpu_map[cpu];12890 12891	if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))12892		return;12893 12894	if (offline) {12895		/* Find next online CPU on original mask */12896		cpu_next = cpumask_next_wrap(cpu, orig_mask, cpu, true);12897		cpu_select = lpfc_next_online_cpu(orig_mask, cpu_next);12898 12899		/* Found a valid CPU */12900		if ((cpu_select < nr_cpu_ids) && (cpu_select != cpu)) {12901			/* Go through each eqhdl and ensure offlining12902			 * cpu aff_mask is migrated12903			 */12904			for (idx = 0; idx < phba->cfg_irq_chann; idx++) {12905				aff_mask = lpfc_get_aff_mask(idx);12906 12907				/* Migrate affinity */12908				if (cpumask_test_cpu(cpu, aff_mask))12909					lpfc_irq_set_aff(lpfc_get_eq_hdl(idx),12910							 cpu_select);12911			}12912		} else {12913			/* Rely on irqbalance if no online CPUs left on NUMA */12914			for (idx = 0; idx < phba->cfg_irq_chann; idx++)12915				lpfc_irq_clear_aff(lpfc_get_eq_hdl(idx));12916		}12917	} else {12918		/* Migrate affinity back to this CPU */12919		lpfc_irq_set_aff(lpfc_get_eq_hdl(cpup->eq), cpu);12920	}12921}12922 12923static int lpfc_cpu_offline(unsigned int cpu, struct hlist_node *node)12924{12925	struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);12926	struct lpfc_queue *eq, *next;12927	LIST_HEAD(eqlist);12928	int retval;12929 12930	if (!phba) {12931		WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());12932		return 0;12933	}12934 12935	if (__lpfc_cpuhp_checks(phba, &retval))12936		return retval;12937 12938	lpfc_irq_rebalance(phba, cpu, true);12939 12940	retval = lpfc_cpuhp_get_eq(phba, cpu, &eqlist);12941	if (retval)12942		return retval;12943 12944	/* start polling on these eq's */12945	list_for_each_entry_safe(eq, next, &eqlist, _poll_list) {12946		list_del_init(&eq->_poll_list);12947		lpfc_sli4_start_polling(eq);12948	}12949 12950	return 0;12951}12952 12953static int lpfc_cpu_online(unsigned int cpu, struct hlist_node *node)12954{12955	struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);12956	struct lpfc_queue *eq, *next;12957	unsigned int n;12958	int retval;12959 12960	if (!phba) {12961		WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());12962		return 0;12963	}12964 12965	if (__lpfc_cpuhp_checks(phba, &retval))12966		return retval;12967 12968	lpfc_irq_rebalance(phba, cpu, false);12969 12970	list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list) {12971		n = lpfc_find_cpu_handle(phba, eq->hdwq, LPFC_FIND_BY_HDWQ);12972		if (n == cpu)12973			lpfc_sli4_stop_polling(eq);12974	}12975 12976	return 0;12977}12978 12979/**12980 * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device12981 * @phba: pointer to lpfc hba data structure.12982 *12983 * This routine is invoked to enable the MSI-X interrupt vectors to device12984 * with SLI-4 interface spec.  It also allocates MSI-X vectors and maps them12985 * to cpus on the system.12986 *12987 * When cfg_irq_numa is enabled, the adapter will only allocate vectors for12988 * the number of cpus on the same numa node as this adapter.  The vectors are12989 * allocated without requesting OS affinity mapping.  A vector will be12990 * allocated and assigned to each online and offline cpu.  If the cpu is12991 * online, then affinity will be set to that cpu.  If the cpu is offline, then12992 * affinity will be set to the nearest peer cpu within the numa node that is12993 * online.  If there are no online cpus within the numa node, affinity is not12994 * assigned and the OS may do as it pleases. Note: cpu vector affinity mapping12995 * is consistent with the way cpu online/offline is handled when cfg_irq_numa is12996 * configured.12997 *12998 * If numa mode is not enabled and there is more than 1 vector allocated, then12999 * the driver relies on the managed irq interface where the OS assigns vector to13000 * cpu affinity.  The driver will then use that affinity mapping to setup its13001 * cpu mapping table.13002 *13003 * Return codes13004 * 0 - successful13005 * other values - error13006 **/13007static int13008lpfc_sli4_enable_msix(struct lpfc_hba *phba)13009{13010	int vectors, rc, index;13011	char *name;13012	const struct cpumask *aff_mask = NULL;13013	unsigned int cpu = 0, cpu_cnt = 0, cpu_select = nr_cpu_ids;13014	struct lpfc_vector_map_info *cpup;13015	struct lpfc_hba_eq_hdl *eqhdl;13016	const struct cpumask *maskp;13017	unsigned int flags = PCI_IRQ_MSIX;13018 13019	/* Set up MSI-X multi-message vectors */13020	vectors = phba->cfg_irq_chann;13021 13022	if (phba->irq_chann_mode != NORMAL_MODE)13023		aff_mask = &phba->sli4_hba.irq_aff_mask;13024 13025	if (aff_mask) {13026		cpu_cnt = cpumask_weight(aff_mask);13027		vectors = min(phba->cfg_irq_chann, cpu_cnt);13028 13029		/* cpu: iterates over aff_mask including offline or online13030		 * cpu_select: iterates over online aff_mask to set affinity13031		 */13032		cpu = cpumask_first(aff_mask);13033		cpu_select = lpfc_next_online_cpu(aff_mask, cpu);13034	} else {13035		flags |= PCI_IRQ_AFFINITY;13036	}13037 13038	rc = pci_alloc_irq_vectors(phba->pcidev, 1, vectors, flags);13039	if (rc < 0) {13040		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,13041				"0484 PCI enable MSI-X failed (%d)\n", rc);13042		goto vec_fail_out;13043	}13044	vectors = rc;13045 13046	/* Assign MSI-X vectors to interrupt handlers */13047	for (index = 0; index < vectors; index++) {13048		eqhdl = lpfc_get_eq_hdl(index);13049		name = eqhdl->handler_name;13050		memset(name, 0, LPFC_SLI4_HANDLER_NAME_SZ);13051		snprintf(name, LPFC_SLI4_HANDLER_NAME_SZ,13052			 LPFC_DRIVER_HANDLER_NAME"%d", index);13053 13054		eqhdl->idx = index;13055		rc = pci_irq_vector(phba->pcidev, index);13056		if (rc < 0) {13057			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,13058					"0489 MSI-X fast-path (%d) "13059					"pci_irq_vec failed (%d)\n", index, rc);13060			goto cfg_fail_out;13061		}13062		eqhdl->irq = rc;13063 13064		rc = request_threaded_irq(eqhdl->irq,13065					  &lpfc_sli4_hba_intr_handler,13066					  &lpfc_sli4_hba_intr_handler_th,13067					  0, name, eqhdl);13068		if (rc) {13069			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,13070					"0486 MSI-X fast-path (%d) "13071					"request_irq failed (%d)\n", index, rc);13072			goto cfg_fail_out;13073		}13074 13075		if (aff_mask) {13076			/* If found a neighboring online cpu, set affinity */13077			if (cpu_select < nr_cpu_ids)13078				lpfc_irq_set_aff(eqhdl, cpu_select);13079 13080			/* Assign EQ to cpu_map */13081			lpfc_assign_eq_map_info(phba, index,13082						LPFC_CPU_FIRST_IRQ,13083						cpu);13084 13085			/* Iterate to next offline or online cpu in aff_mask */13086			cpu = cpumask_next(cpu, aff_mask);13087 13088			/* Find next online cpu in aff_mask to set affinity */13089			cpu_select = lpfc_next_online_cpu(aff_mask, cpu);13090		} else if (vectors == 1) {13091			cpu = cpumask_first(cpu_present_mask);13092			lpfc_assign_eq_map_info(phba, index, LPFC_CPU_FIRST_IRQ,13093						cpu);13094		} else {13095			maskp = pci_irq_get_affinity(phba->pcidev, index);13096 13097			/* Loop through all CPUs associated with vector index */13098			for_each_cpu_and(cpu, maskp, cpu_present_mask) {13099				cpup = &phba->sli4_hba.cpu_map[cpu];13100 13101				/* If this is the first CPU thats assigned to13102				 * this vector, set LPFC_CPU_FIRST_IRQ.13103				 *13104				 * With certain platforms its possible that irq13105				 * vectors are affinitized to all the cpu's.13106				 * This can result in each cpu_map.eq to be set13107				 * to the last vector, resulting in overwrite13108				 * of all the previous cpu_map.eq.  Ensure that13109				 * each vector receives a place in cpu_map.13110				 * Later call to lpfc_cpu_affinity_check will13111				 * ensure we are nicely balanced out.13112				 */13113				if (cpup->eq != LPFC_VECTOR_MAP_EMPTY)13114					continue;13115				lpfc_assign_eq_map_info(phba, index,13116							LPFC_CPU_FIRST_IRQ,13117							cpu);13118				break;13119			}13120		}13121	}13122 13123	if (vectors != phba->cfg_irq_chann) {13124		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,13125				"3238 Reducing IO channels to match number of "13126				"MSI-X vectors, requested %d got %d\n",13127				phba->cfg_irq_chann, vectors);13128		if (phba->cfg_irq_chann > vectors)13129			phba->cfg_irq_chann = vectors;13130	}13131 13132	return rc;13133 13134cfg_fail_out:13135	/* free the irq already requested */13136	for (--index; index >= 0; index--) {13137		eqhdl = lpfc_get_eq_hdl(index);13138		lpfc_irq_clear_aff(eqhdl);13139		free_irq(eqhdl->irq, eqhdl);13140	}13141 13142	/* Unconfigure MSI-X capability structure */13143	pci_free_irq_vectors(phba->pcidev);13144 13145vec_fail_out:13146	return rc;13147}13148 13149/**13150 * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device13151 * @phba: pointer to lpfc hba data structure.13152 *13153 * This routine is invoked to enable the MSI interrupt mode to device with13154 * SLI-4 interface spec. The kernel function pci_alloc_irq_vectors() is13155 * called to enable the MSI vector. The device driver is responsible for13156 * calling the request_irq() to register MSI vector with a interrupt the13157 * handler, which is done in this function.13158 *13159 * Return codes13160 * 	0 - successful13161 * 	other values - error13162 **/13163static int13164lpfc_sli4_enable_msi(struct lpfc_hba *phba)13165{13166	int rc, index;13167	unsigned int cpu;13168	struct lpfc_hba_eq_hdl *eqhdl;13169 13170	rc = pci_alloc_irq_vectors(phba->pcidev, 1, 1,13171				   PCI_IRQ_MSI | PCI_IRQ_AFFINITY);13172	if (rc > 0)13173		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,13174				"0487 PCI enable MSI mode success.\n");13175	else {13176		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,13177				"0488 PCI enable MSI mode failed (%d)\n", rc);13178		return rc ? rc : -1;13179	}13180 13181	rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,13182			 0, LPFC_DRIVER_NAME, phba);13183	if (rc) {13184		pci_free_irq_vectors(phba->pcidev);13185		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,13186				"0490 MSI request_irq failed (%d)\n", rc);13187		return rc;13188	}13189 13190	eqhdl = lpfc_get_eq_hdl(0);13191	rc = pci_irq_vector(phba->pcidev, 0);13192	if (rc < 0) {13193		pci_free_irq_vectors(phba->pcidev);13194		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,13195				"0496 MSI pci_irq_vec failed (%d)\n", rc);13196		return rc;13197	}13198	eqhdl->irq = rc;13199 13200	cpu = cpumask_first(cpu_present_mask);13201	lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ, cpu);13202 13203	for (index = 0; index < phba->cfg_irq_chann; index++) {13204		eqhdl = lpfc_get_eq_hdl(index);13205		eqhdl->idx = index;13206	}13207 13208	return 0;13209}13210 13211/**13212 * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device13213 * @phba: pointer to lpfc hba data structure.13214 * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).13215 *13216 * This routine is invoked to enable device interrupt and associate driver's13217 * interrupt handler(s) to interrupt vector(s) to device with SLI-413218 * interface spec. Depends on the interrupt mode configured to the driver,13219 * the driver will try to fallback from the configured interrupt mode to an13220 * interrupt mode which is supported by the platform, kernel, and device in13221 * the order of:13222 * MSI-X -> MSI -> IRQ.13223 *13224 * Return codes13225 *	Interrupt mode (2, 1, 0) - successful13226 *	LPFC_INTR_ERROR - error13227 **/13228static uint32_t13229lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)13230{13231	uint32_t intr_mode = LPFC_INTR_ERROR;13232	int retval, idx;13233 13234	if (cfg_mode == 2) {13235		/* Preparation before conf_msi mbox cmd */13236		retval = 0;13237		if (!retval) {13238			/* Now, try to enable MSI-X interrupt mode */13239			retval = lpfc_sli4_enable_msix(phba);13240			if (!retval) {13241				/* Indicate initialization to MSI-X mode */13242				phba->intr_type = MSIX;13243				intr_mode = 2;13244			}13245		}13246	}13247 13248	/* Fallback to MSI if MSI-X initialization failed */13249	if (cfg_mode >= 1 && phba->intr_type == NONE) {13250		retval = lpfc_sli4_enable_msi(phba);13251		if (!retval) {13252			/* Indicate initialization to MSI mode */13253			phba->intr_type = MSI;13254			intr_mode = 1;13255		}13256	}13257 13258	/* Fallback to INTx if both MSI-X/MSI initalization failed */13259	if (phba->intr_type == NONE) {13260		retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,13261				     IRQF_SHARED, LPFC_DRIVER_NAME, phba);13262		if (!retval) {13263			struct lpfc_hba_eq_hdl *eqhdl;13264			unsigned int cpu;13265 13266			/* Indicate initialization to INTx mode */13267			phba->intr_type = INTx;13268			intr_mode = 0;13269 13270			eqhdl = lpfc_get_eq_hdl(0);13271			retval = pci_irq_vector(phba->pcidev, 0);13272			if (retval < 0) {13273				lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,13274					"0502 INTR pci_irq_vec failed (%d)\n",13275					 retval);13276				return LPFC_INTR_ERROR;13277			}13278			eqhdl->irq = retval;13279 13280			cpu = cpumask_first(cpu_present_mask);13281			lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ,13282						cpu);13283			for (idx = 0; idx < phba->cfg_irq_chann; idx++) {13284				eqhdl = lpfc_get_eq_hdl(idx);13285				eqhdl->idx = idx;13286			}13287		}13288	}13289	return intr_mode;13290}13291 13292/**13293 * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device13294 * @phba: pointer to lpfc hba data structure.13295 *13296 * This routine is invoked to disable device interrupt and disassociate13297 * the driver's interrupt handler(s) from interrupt vector(s) to device13298 * with SLI-4 interface spec. Depending on the interrupt mode, the driver13299 * will release the interrupt vector(s) for the message signaled interrupt.13300 **/13301static void13302lpfc_sli4_disable_intr(struct lpfc_hba *phba)13303{13304	/* Disable the currently initialized interrupt mode */13305	if (phba->intr_type == MSIX) {13306		int index;13307		struct lpfc_hba_eq_hdl *eqhdl;13308 13309		/* Free up MSI-X multi-message vectors */13310		for (index = 0; index < phba->cfg_irq_chann; index++) {13311			eqhdl = lpfc_get_eq_hdl(index);13312			lpfc_irq_clear_aff(eqhdl);13313			free_irq(eqhdl->irq, eqhdl);13314		}13315	} else {13316		free_irq(phba->pcidev->irq, phba);13317	}13318 13319	pci_free_irq_vectors(phba->pcidev);13320 13321	/* Reset interrupt management states */13322	phba->intr_type = NONE;13323	phba->sli.slistat.sli_intr = 0;13324}13325 13326/**13327 * lpfc_unset_hba - Unset SLI3 hba device initialization13328 * @phba: pointer to lpfc hba data structure.13329 *13330 * This routine is invoked to unset the HBA device initialization steps to13331 * a device with SLI-3 interface spec.13332 **/13333static void13334lpfc_unset_hba(struct lpfc_hba *phba)13335{13336	set_bit(FC_UNLOADING, &phba->pport->load_flag);13337 13338	kfree(phba->vpi_bmask);13339	kfree(phba->vpi_ids);13340 13341	lpfc_stop_hba_timers(phba);13342 13343	phba->pport->work_port_events = 0;13344 13345	lpfc_sli_hba_down(phba);13346 13347	lpfc_sli_brdrestart(phba);13348 13349	lpfc_sli_disable_intr(phba);13350 13351	return;13352}13353 13354/**13355 * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy13356 * @phba: Pointer to HBA context object.13357 *13358 * This function is called in the SLI4 code path to wait for completion13359 * of device's XRIs exchange busy. It will check the XRI exchange busy13360 * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after13361 * that, it will check the XRI exchange busy on outstanding FCP and ELS13362 * I/Os every 30 seconds, log error message, and wait forever. Only when13363 * all XRI exchange busy complete, the driver unload shall proceed with13364 * invoking the function reset ioctl mailbox command to the CNA and the13365 * the rest of the driver unload resource release.13366 **/13367static void13368lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)13369{13370	struct lpfc_sli4_hdw_queue *qp;13371	int idx, ccnt;13372	int wait_time = 0;13373	int io_xri_cmpl = 1;13374	int nvmet_xri_cmpl = 1;13375	int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);13376 13377	/* Driver just aborted IOs during the hba_unset process.  Pause13378	 * here to give the HBA time to complete the IO and get entries13379	 * into the abts lists.13380	 */13381	msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1 * 5);13382 13383	/* Wait for NVME pending IO to flush back to transport. */13384	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)13385		lpfc_nvme_wait_for_io_drain(phba);13386 13387	ccnt = 0;13388	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {13389		qp = &phba->sli4_hba.hdwq[idx];13390		io_xri_cmpl = list_empty(&qp->lpfc_abts_io_buf_list);13391		if (!io_xri_cmpl) /* if list is NOT empty */13392			ccnt++;13393	}13394	if (ccnt)13395		io_xri_cmpl = 0;13396 13397	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {13398		nvmet_xri_cmpl =13399			list_empty(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);13400	}13401 13402	while (!els_xri_cmpl || !io_xri_cmpl || !nvmet_xri_cmpl) {13403		if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {13404			if (!nvmet_xri_cmpl)13405				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,13406						"6424 NVMET XRI exchange busy "13407						"wait time: %d seconds.\n",13408						wait_time/1000);13409			if (!io_xri_cmpl)13410				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,13411						"6100 IO XRI exchange busy "13412						"wait time: %d seconds.\n",13413						wait_time/1000);13414			if (!els_xri_cmpl)13415				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,13416						"2878 ELS XRI exchange busy "13417						"wait time: %d seconds.\n",13418						wait_time/1000);13419			msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);13420			wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;13421		} else {13422			msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);13423			wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;13424		}13425 13426		ccnt = 0;13427		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {13428			qp = &phba->sli4_hba.hdwq[idx];13429			io_xri_cmpl = list_empty(13430			    &qp->lpfc_abts_io_buf_list);13431			if (!io_xri_cmpl) /* if list is NOT empty */13432				ccnt++;13433		}13434		if (ccnt)13435			io_xri_cmpl = 0;13436 13437		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {13438			nvmet_xri_cmpl = list_empty(13439				&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);13440		}13441		els_xri_cmpl =13442			list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);13443 13444	}13445}13446 13447/**13448 * lpfc_sli4_hba_unset - Unset the fcoe hba13449 * @phba: Pointer to HBA context object.13450 *13451 * This function is called in the SLI4 code path to reset the HBA's FCoE13452 * function. The caller is not required to hold any lock. This routine13453 * issues PCI function reset mailbox command to reset the FCoE function.13454 * At the end of the function, it calls lpfc_hba_down_post function to13455 * free any pending commands.13456 **/13457static void13458lpfc_sli4_hba_unset(struct lpfc_hba *phba)13459{13460	int wait_cnt = 0;13461	LPFC_MBOXQ_t *mboxq;13462	struct pci_dev *pdev = phba->pcidev;13463 13464	lpfc_stop_hba_timers(phba);13465	hrtimer_cancel(&phba->cmf_stats_timer);13466	hrtimer_cancel(&phba->cmf_timer);13467 13468	if (phba->pport)13469		phba->sli4_hba.intr_enable = 0;13470 13471	/*13472	 * Gracefully wait out the potential current outstanding asynchronous13473	 * mailbox command.13474	 */13475 13476	/* First, block any pending async mailbox command from posted */13477	spin_lock_irq(&phba->hbalock);13478	phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;13479	spin_unlock_irq(&phba->hbalock);13480	/* Now, trying to wait it out if we can */13481	while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {13482		msleep(10);13483		if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)13484			break;13485	}13486	/* Forcefully release the outstanding mailbox command if timed out */13487	if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {13488		spin_lock_irq(&phba->hbalock);13489		mboxq = phba->sli.mbox_active;13490		mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;13491		__lpfc_mbox_cmpl_put(phba, mboxq);13492		phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;13493		phba->sli.mbox_active = NULL;13494		spin_unlock_irq(&phba->hbalock);13495	}13496 13497	/* Abort all iocbs associated with the hba */13498	lpfc_sli_hba_iocb_abort(phba);13499 13500	if (!pci_channel_offline(phba->pcidev))13501		/* Wait for completion of device XRI exchange busy */13502		lpfc_sli4_xri_exchange_busy_wait(phba);13503 13504	/* per-phba callback de-registration for hotplug event */13505	if (phba->pport)13506		lpfc_cpuhp_remove(phba);13507 13508	/* Disable PCI subsystem interrupt */13509	lpfc_sli4_disable_intr(phba);13510 13511	/* Disable SR-IOV if enabled */13512	if (phba->cfg_sriov_nr_virtfn)13513		pci_disable_sriov(pdev);13514 13515	/* Stop kthread signal shall trigger work_done one more time */13516	kthread_stop(phba->worker_thread);13517 13518	/* Disable FW logging to host memory */13519	lpfc_ras_stop_fwlog(phba);13520 13521	/* Reset SLI4 HBA FCoE function */13522	lpfc_pci_function_reset(phba);13523 13524	/* release all queue allocated resources. */13525	lpfc_sli4_queue_destroy(phba);13526 13527	/* Free RAS DMA memory */13528	if (phba->ras_fwlog.ras_enabled)13529		lpfc_sli4_ras_dma_free(phba);13530 13531	/* Stop the SLI4 device port */13532	if (phba->pport)13533		phba->pport->work_port_events = 0;13534}13535 13536static uint32_t13537lpfc_cgn_crc32(uint32_t crc, u8 byte)13538{13539	uint32_t msb = 0;13540	uint32_t bit;13541 13542	for (bit = 0; bit < 8; bit++) {13543		msb = (crc >> 31) & 1;13544		crc <<= 1;13545 13546		if (msb ^ (byte & 1)) {13547			crc ^= LPFC_CGN_CRC32_MAGIC_NUMBER;13548			crc |= 1;13549		}13550		byte >>= 1;13551	}13552	return crc;13553}13554 13555static uint32_t13556lpfc_cgn_reverse_bits(uint32_t wd)13557{13558	uint32_t result = 0;13559	uint32_t i;13560 13561	for (i = 0; i < 32; i++) {13562		result <<= 1;13563		result |= (1 & (wd >> i));13564	}13565	return result;13566}13567 13568/*13569 * The routine corresponds with the algorithm the HBA firmware13570 * uses to validate the data integrity.13571 */13572uint32_t13573lpfc_cgn_calc_crc32(void *ptr, uint32_t byteLen, uint32_t crc)13574{13575	uint32_t  i;13576	uint32_t result;13577	uint8_t  *data = (uint8_t *)ptr;13578 13579	for (i = 0; i < byteLen; ++i)13580		crc = lpfc_cgn_crc32(crc, data[i]);13581 13582	result = ~lpfc_cgn_reverse_bits(crc);13583	return result;13584}13585 13586void13587lpfc_init_congestion_buf(struct lpfc_hba *phba)13588{13589	struct lpfc_cgn_info *cp;13590	uint16_t size;13591	uint32_t crc;13592 13593	lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,13594			"6235 INIT Congestion Buffer %p\n", phba->cgn_i);13595 13596	if (!phba->cgn_i)13597		return;13598	cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;13599 13600	atomic_set(&phba->cgn_fabric_warn_cnt, 0);13601	atomic_set(&phba->cgn_fabric_alarm_cnt, 0);13602	atomic_set(&phba->cgn_sync_alarm_cnt, 0);13603	atomic_set(&phba->cgn_sync_warn_cnt, 0);13604 13605	atomic_set(&phba->cgn_driver_evt_cnt, 0);13606	atomic_set(&phba->cgn_latency_evt_cnt, 0);13607	atomic64_set(&phba->cgn_latency_evt, 0);13608	phba->cgn_evt_minute = 0;13609 13610	memset(cp, 0xff, offsetof(struct lpfc_cgn_info, cgn_stat));13611	cp->cgn_info_size = cpu_to_le16(LPFC_CGN_INFO_SZ);13612	cp->cgn_info_version = LPFC_CGN_INFO_V4;13613 13614	/* cgn parameters */13615	cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;13616	cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;13617	cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;13618	cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;13619 13620	lpfc_cgn_update_tstamp(phba, &cp->base_time);13621 13622	/* Fill in default LUN qdepth */13623	if (phba->pport) {13624		size = (uint16_t)(phba->pport->cfg_lun_queue_depth);13625		cp->cgn_lunq = cpu_to_le16(size);13626	}13627 13628	/* last used Index initialized to 0xff already */13629 13630	cp->cgn_warn_freq = cpu_to_le16(LPFC_FPIN_INIT_FREQ);13631	cp->cgn_alarm_freq = cpu_to_le16(LPFC_FPIN_INIT_FREQ);13632	crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED);13633	cp->cgn_info_crc = cpu_to_le32(crc);13634 13635	phba->cgn_evt_timestamp = jiffies +13636		msecs_to_jiffies(LPFC_CGN_TIMER_TO_MIN);13637}13638 13639void13640lpfc_init_congestion_stat(struct lpfc_hba *phba)13641{13642	struct lpfc_cgn_info *cp;13643	uint32_t crc;13644 13645	lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,13646			"6236 INIT Congestion Stat %p\n", phba->cgn_i);13647 13648	if (!phba->cgn_i)13649		return;13650 13651	cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;13652	memset(&cp->cgn_stat, 0, sizeof(cp->cgn_stat));13653 13654	lpfc_cgn_update_tstamp(phba, &cp->stat_start);13655	crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED);13656	cp->cgn_info_crc = cpu_to_le32(crc);13657}13658 13659/**13660 * __lpfc_reg_congestion_buf - register congestion info buffer with HBA13661 * @phba: Pointer to hba context object.13662 * @reg: flag to determine register or unregister.13663 */13664static int13665__lpfc_reg_congestion_buf(struct lpfc_hba *phba, int reg)13666{13667	struct lpfc_mbx_reg_congestion_buf *reg_congestion_buf;13668	union  lpfc_sli4_cfg_shdr *shdr;13669	uint32_t shdr_status, shdr_add_status;13670	LPFC_MBOXQ_t *mboxq;13671	int length, rc;13672 13673	if (!phba->cgn_i)13674		return -ENXIO;13675 13676	mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);13677	if (!mboxq) {13678		lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,13679				"2641 REG_CONGESTION_BUF mbox allocation fail: "13680				"HBA state x%x reg %d\n",13681				phba->pport->port_state, reg);13682		return -ENOMEM;13683	}13684 13685	length = (sizeof(struct lpfc_mbx_reg_congestion_buf) -13686		sizeof(struct lpfc_sli4_cfg_mhdr));13687	lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,13688			 LPFC_MBOX_OPCODE_REG_CONGESTION_BUF, length,13689			 LPFC_SLI4_MBX_EMBED);13690	reg_congestion_buf = &mboxq->u.mqe.un.reg_congestion_buf;13691	bf_set(lpfc_mbx_reg_cgn_buf_type, reg_congestion_buf, 1);13692	if (reg > 0)13693		bf_set(lpfc_mbx_reg_cgn_buf_cnt, reg_congestion_buf, 1);13694	else13695		bf_set(lpfc_mbx_reg_cgn_buf_cnt, reg_congestion_buf, 0);13696	reg_congestion_buf->length = sizeof(struct lpfc_cgn_info);13697	reg_congestion_buf->addr_lo =13698		putPaddrLow(phba->cgn_i->phys);13699	reg_congestion_buf->addr_hi =13700		putPaddrHigh(phba->cgn_i->phys);13701 13702	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);13703	shdr = (union lpfc_sli4_cfg_shdr *)13704		&mboxq->u.mqe.un.sli4_config.header.cfg_shdr;13705	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);13706	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,13707				 &shdr->response);13708	mempool_free(mboxq, phba->mbox_mem_pool);13709	if (shdr_status || shdr_add_status || rc) {13710		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,13711				"2642 REG_CONGESTION_BUF mailbox "13712				"failed with status x%x add_status x%x,"13713				" mbx status x%x reg %d\n",13714				shdr_status, shdr_add_status, rc, reg);13715		return -ENXIO;13716	}13717	return 0;13718}13719 13720int13721lpfc_unreg_congestion_buf(struct lpfc_hba *phba)13722{13723	lpfc_cmf_stop(phba);13724	return __lpfc_reg_congestion_buf(phba, 0);13725}13726 13727int13728lpfc_reg_congestion_buf(struct lpfc_hba *phba)13729{13730	return __lpfc_reg_congestion_buf(phba, 1);13731}13732 13733/**13734 * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.13735 * @phba: Pointer to HBA context object.13736 * @mboxq: Pointer to the mailboxq memory for the mailbox command response.13737 *13738 * This function is called in the SLI4 code path to read the port's13739 * sli4 capabilities.13740 *13741 * This function may be be called from any context that can block-wait13742 * for the completion.  The expectation is that this routine is called13743 * typically from probe_one or from the online routine.13744 **/13745int13746lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)13747{13748	int rc;13749	struct lpfc_mqe *mqe = &mboxq->u.mqe;13750	struct lpfc_pc_sli4_params *sli4_params;13751	uint32_t mbox_tmo;13752	int length;13753	bool exp_wqcq_pages = true;13754	struct lpfc_sli4_parameters *mbx_sli4_parameters;13755 13756	/*13757	 * By default, the driver assumes the SLI4 port requires RPI13758	 * header postings.  The SLI4_PARAM response will correct this13759	 * assumption.13760	 */13761	phba->sli4_hba.rpi_hdrs_in_use = 1;13762 13763	/* Read the port's SLI4 Config Parameters */13764	length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -13765		  sizeof(struct lpfc_sli4_cfg_mhdr));13766	lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,13767			 LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,13768			 length, LPFC_SLI4_MBX_EMBED);13769	if (!phba->sli4_hba.intr_enable)13770		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);13771	else {13772		mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);13773		rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);13774	}13775	if (unlikely(rc))13776		return rc;13777	sli4_params = &phba->sli4_hba.pc_sli4_params;13778	mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;13779	sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);13780	sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);13781	sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);13782	sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,13783					     mbx_sli4_parameters);13784	sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,13785					     mbx_sli4_parameters);13786	if (bf_get(cfg_phwq, mbx_sli4_parameters))13787		phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;13788	else13789		phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;13790	sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;13791	sli4_params->loopbk_scope = bf_get(cfg_loopbk_scope,13792					   mbx_sli4_parameters);13793	sli4_params->oas_supported = bf_get(cfg_oas, mbx_sli4_parameters);13794	sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);13795	sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);13796	sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);13797	sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);13798	sli4_params->eqav = bf_get(cfg_eqav, mbx_sli4_parameters);13799	sli4_params->cqav = bf_get(cfg_cqav, mbx_sli4_parameters);13800	sli4_params->wqsize = bf_get(cfg_wqsize, mbx_sli4_parameters);13801	sli4_params->bv1s = bf_get(cfg_bv1s, mbx_sli4_parameters);13802	sli4_params->pls = bf_get(cfg_pvl, mbx_sli4_parameters);13803	sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,13804					    mbx_sli4_parameters);13805	sli4_params->wqpcnt = bf_get(cfg_wqpcnt, mbx_sli4_parameters);13806	sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,13807					   mbx_sli4_parameters);13808	phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);13809	phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);13810	sli4_params->mi_cap = bf_get(cfg_mi_ver, mbx_sli4_parameters);13811 13812	/* Check for Extended Pre-Registered SGL support */13813	phba->cfg_xpsgl = bf_get(cfg_xpsgl, mbx_sli4_parameters);13814 13815	/* Check for firmware nvme support */13816	rc = (bf_get(cfg_nvme, mbx_sli4_parameters) &&13817		     bf_get(cfg_xib, mbx_sli4_parameters));13818 13819	if (rc) {13820		/* Save this to indicate the Firmware supports NVME */13821		sli4_params->nvme = 1;13822 13823		/* Firmware NVME support, check driver FC4 NVME support */13824		if (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP) {13825			lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,13826					"6133 Disabling NVME support: "13827					"FC4 type not supported: x%x\n",13828					phba->cfg_enable_fc4_type);13829			goto fcponly;13830		}13831	} else {13832		/* No firmware NVME support, check driver FC4 NVME support */13833		sli4_params->nvme = 0;13834		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {13835			lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_NVME,13836					"6101 Disabling NVME support: Not "13837					"supported by firmware (%d %d) x%x\n",13838					bf_get(cfg_nvme, mbx_sli4_parameters),13839					bf_get(cfg_xib, mbx_sli4_parameters),13840					phba->cfg_enable_fc4_type);13841fcponly:13842			phba->nvmet_support = 0;13843			phba->cfg_nvmet_mrq = 0;13844			phba->cfg_nvme_seg_cnt = 0;13845 13846			/* If no FC4 type support, move to just SCSI support */13847			if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))13848				return -ENODEV;13849			phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;13850		}13851	}13852 13853	/* If the NVME FC4 type is enabled, scale the sg_seg_cnt to13854	 * accommodate 512K and 1M IOs in a single nvme buf.13855	 */13856	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)13857		phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT;13858 13859	/* Enable embedded Payload BDE if support is indicated */13860	if (bf_get(cfg_pbde, mbx_sli4_parameters))13861		phba->cfg_enable_pbde = 1;13862	else13863		phba->cfg_enable_pbde = 0;13864 13865	/*13866	 * To support Suppress Response feature we must satisfy 3 conditions.13867	 * lpfc_suppress_rsp module parameter must be set (default).13868	 * In SLI4-Parameters Descriptor:13869	 * Extended Inline Buffers (XIB) must be supported.13870	 * Suppress Response IU Not Supported (SRIUNS) must NOT be supported13871	 * (double negative).13872	 */13873	if (phba->cfg_suppress_rsp && bf_get(cfg_xib, mbx_sli4_parameters) &&13874	    !(bf_get(cfg_nosr, mbx_sli4_parameters)))13875		phba->sli.sli_flag |= LPFC_SLI_SUPPRESS_RSP;13876	else13877		phba->cfg_suppress_rsp = 0;13878 13879	if (bf_get(cfg_eqdr, mbx_sli4_parameters))13880		phba->sli.sli_flag |= LPFC_SLI_USE_EQDR;13881 13882	/* Make sure that sge_supp_len can be handled by the driver */13883	if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)13884		sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;13885 13886	dma_set_max_seg_size(&phba->pcidev->dev, sli4_params->sge_supp_len);13887 13888	/*13889	 * Check whether the adapter supports an embedded copy of the13890	 * FCP CMD IU within the WQE for FCP_Ixxx commands. In order13891	 * to use this option, 128-byte WQEs must be used.13892	 */13893	if (bf_get(cfg_ext_embed_cb, mbx_sli4_parameters))13894		phba->fcp_embed_io = 1;13895	else13896		phba->fcp_embed_io = 0;13897 13898	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,13899			"6422 XIB %d PBDE %d: FCP %d NVME %d %d %d\n",13900			bf_get(cfg_xib, mbx_sli4_parameters),13901			phba->cfg_enable_pbde,13902			phba->fcp_embed_io, sli4_params->nvme,13903			phba->cfg_nvme_embed_cmd, phba->cfg_suppress_rsp);13904 13905	if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==13906	    LPFC_SLI_INTF_IF_TYPE_2) &&13907	    (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==13908		 LPFC_SLI_INTF_FAMILY_LNCR_A0))13909		exp_wqcq_pages = false;13910 13911	if ((bf_get(cfg_cqpsize, mbx_sli4_parameters) & LPFC_CQ_16K_PAGE_SZ) &&13912	    (bf_get(cfg_wqpsize, mbx_sli4_parameters) & LPFC_WQ_16K_PAGE_SZ) &&13913	    exp_wqcq_pages &&13914	    (sli4_params->wqsize & LPFC_WQ_SZ128_SUPPORT))13915		phba->enab_exp_wqcq_pages = 1;13916	else13917		phba->enab_exp_wqcq_pages = 0;13918	/*13919	 * Check if the SLI port supports MDS Diagnostics13920	 */13921	if (bf_get(cfg_mds_diags, mbx_sli4_parameters))13922		phba->mds_diags_support = 1;13923	else13924		phba->mds_diags_support = 0;13925 13926	/*13927	 * Check if the SLI port supports NSLER13928	 */13929	if (bf_get(cfg_nsler, mbx_sli4_parameters))13930		phba->nsler = 1;13931	else13932		phba->nsler = 0;13933 13934	return 0;13935}13936 13937/**13938 * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.13939 * @pdev: pointer to PCI device13940 * @pid: pointer to PCI device identifier13941 *13942 * This routine is to be called to attach a device with SLI-3 interface spec13943 * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is13944 * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific13945 * information of the device and driver to see if the driver state that it can13946 * support this kind of device. If the match is successful, the driver core13947 * invokes this routine. If this routine determines it can claim the HBA, it13948 * does all the initialization that it needs to do to handle the HBA properly.13949 *13950 * Return code13951 * 	0 - driver can claim the device13952 * 	negative value - driver can not claim the device13953 **/13954static int13955lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)13956{13957	struct lpfc_hba   *phba;13958	struct lpfc_vport *vport = NULL;13959	struct Scsi_Host  *shost = NULL;13960	int error;13961	uint32_t cfg_mode, intr_mode;13962 13963	/* Allocate memory for HBA structure */13964	phba = lpfc_hba_alloc(pdev);13965	if (!phba)13966		return -ENOMEM;13967 13968	/* Perform generic PCI device enabling operation */13969	error = lpfc_enable_pci_dev(phba);13970	if (error)13971		goto out_free_phba;13972 13973	/* Set up SLI API function jump table for PCI-device group-0 HBAs */13974	error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);13975	if (error)13976		goto out_disable_pci_dev;13977 13978	/* Set up SLI-3 specific device PCI memory space */13979	error = lpfc_sli_pci_mem_setup(phba);13980	if (error) {13981		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,13982				"1402 Failed to set up pci memory space.\n");13983		goto out_disable_pci_dev;13984	}13985 13986	/* Set up SLI-3 specific device driver resources */13987	error = lpfc_sli_driver_resource_setup(phba);13988	if (error) {13989		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,13990				"1404 Failed to set up driver resource.\n");13991		goto out_unset_pci_mem_s3;13992	}13993 13994	/* Initialize and populate the iocb list per host */13995 13996	error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);13997	if (error) {13998		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,13999				"1405 Failed to initialize iocb list.\n");14000		goto out_unset_driver_resource_s3;14001	}14002 14003	/* Set up common device driver resources */14004	error = lpfc_setup_driver_resource_phase2(phba);14005	if (error) {14006		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,14007				"1406 Failed to set up driver resource.\n");14008		goto out_free_iocb_list;14009	}14010 14011	/* Get the default values for Model Name and Description */14012	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);14013 14014	/* Create SCSI host to the physical port */14015	error = lpfc_create_shost(phba);14016	if (error) {14017		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,14018				"1407 Failed to create scsi host.\n");14019		goto out_unset_driver_resource;14020	}14021 14022	/* Configure sysfs attributes */14023	vport = phba->pport;14024	error = lpfc_alloc_sysfs_attr(vport);14025	if (error) {14026		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,14027				"1476 Failed to allocate sysfs attr\n");14028		goto out_destroy_shost;14029	}14030 14031	shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */14032	/* Now, trying to enable interrupt and bring up the device */14033	cfg_mode = phba->cfg_use_msi;14034	while (true) {14035		/* Put device to a known state before enabling interrupt */14036		lpfc_stop_port(phba);14037		/* Configure and enable interrupt */14038		intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);14039		if (intr_mode == LPFC_INTR_ERROR) {14040			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14041					"0431 Failed to enable interrupt.\n");14042			error = -ENODEV;14043			goto out_free_sysfs_attr;14044		}14045		/* SLI-3 HBA setup */14046		if (lpfc_sli_hba_setup(phba)) {14047			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14048					"1477 Failed to set up hba\n");14049			error = -ENODEV;14050			goto out_remove_device;14051		}14052 14053		/* Wait 50ms for the interrupts of previous mailbox commands */14054		msleep(50);14055		/* Check active interrupts on message signaled interrupts */14056		if (intr_mode == 0 ||14057		    phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {14058			/* Log the current active interrupt mode */14059			phba->intr_mode = intr_mode;14060			lpfc_log_intr_mode(phba, intr_mode);14061			break;14062		} else {14063			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,14064					"0447 Configure interrupt mode (%d) "14065					"failed active interrupt test.\n",14066					intr_mode);14067			/* Disable the current interrupt mode */14068			lpfc_sli_disable_intr(phba);14069			/* Try next level of interrupt mode */14070			cfg_mode = --intr_mode;14071		}14072	}14073 14074	/* Perform post initialization setup */14075	lpfc_post_init_setup(phba);14076 14077	/* Check if there are static vports to be created. */14078	lpfc_create_static_vport(phba);14079 14080	return 0;14081 14082out_remove_device:14083	lpfc_unset_hba(phba);14084out_free_sysfs_attr:14085	lpfc_free_sysfs_attr(vport);14086out_destroy_shost:14087	lpfc_destroy_shost(phba);14088out_unset_driver_resource:14089	lpfc_unset_driver_resource_phase2(phba);14090out_free_iocb_list:14091	lpfc_free_iocb_list(phba);14092out_unset_driver_resource_s3:14093	lpfc_sli_driver_resource_unset(phba);14094out_unset_pci_mem_s3:14095	lpfc_sli_pci_mem_unset(phba);14096out_disable_pci_dev:14097	lpfc_disable_pci_dev(phba);14098	if (shost)14099		scsi_host_put(shost);14100out_free_phba:14101	lpfc_hba_free(phba);14102	return error;14103}14104 14105/**14106 * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.14107 * @pdev: pointer to PCI device14108 *14109 * This routine is to be called to disattach a device with SLI-3 interface14110 * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is14111 * removed from PCI bus, it performs all the necessary cleanup for the HBA14112 * device to be removed from the PCI subsystem properly.14113 **/14114static void14115lpfc_pci_remove_one_s3(struct pci_dev *pdev)14116{14117	struct Scsi_Host  *shost = pci_get_drvdata(pdev);14118	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;14119	struct lpfc_vport **vports;14120	struct lpfc_hba   *phba = vport->phba;14121	int i;14122 14123	set_bit(FC_UNLOADING, &vport->load_flag);14124 14125	lpfc_free_sysfs_attr(vport);14126 14127	/* Release all the vports against this physical port */14128	vports = lpfc_create_vport_work_array(phba);14129	if (vports != NULL)14130		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {14131			if (vports[i]->port_type == LPFC_PHYSICAL_PORT)14132				continue;14133			fc_vport_terminate(vports[i]->fc_vport);14134		}14135	lpfc_destroy_vport_work_array(phba, vports);14136 14137	/* Remove FC host with the physical port */14138	fc_remove_host(shost);14139	scsi_remove_host(shost);14140 14141	/* Clean up all nodes, mailboxes and IOs. */14142	lpfc_cleanup(vport);14143 14144	/*14145	 * Bring down the SLI Layer. This step disable all interrupts,14146	 * clears the rings, discards all mailbox commands, and resets14147	 * the HBA.14148	 */14149 14150	/* HBA interrupt will be disabled after this call */14151	lpfc_sli_hba_down(phba);14152	/* Stop kthread signal shall trigger work_done one more time */14153	kthread_stop(phba->worker_thread);14154	/* Final cleanup of txcmplq and reset the HBA */14155	lpfc_sli_brdrestart(phba);14156 14157	kfree(phba->vpi_bmask);14158	kfree(phba->vpi_ids);14159 14160	lpfc_stop_hba_timers(phba);14161	spin_lock_irq(&phba->port_list_lock);14162	list_del_init(&vport->listentry);14163	spin_unlock_irq(&phba->port_list_lock);14164 14165	lpfc_debugfs_terminate(vport);14166 14167	/* Disable SR-IOV if enabled */14168	if (phba->cfg_sriov_nr_virtfn)14169		pci_disable_sriov(pdev);14170 14171	/* Disable interrupt */14172	lpfc_sli_disable_intr(phba);14173 14174	scsi_host_put(shost);14175 14176	/*14177	 * Call scsi_free before mem_free since scsi bufs are released to their14178	 * corresponding pools here.14179	 */14180	lpfc_scsi_free(phba);14181	lpfc_free_iocb_list(phba);14182 14183	lpfc_mem_free_all(phba);14184 14185	dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),14186			  phba->hbqslimp.virt, phba->hbqslimp.phys);14187 14188	/* Free resources associated with SLI2 interface */14189	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,14190			  phba->slim2p.virt, phba->slim2p.phys);14191 14192	/* unmap adapter SLIM and Control Registers */14193	iounmap(phba->ctrl_regs_memmap_p);14194	iounmap(phba->slim_memmap_p);14195 14196	lpfc_hba_free(phba);14197 14198	pci_release_mem_regions(pdev);14199	pci_disable_device(pdev);14200}14201 14202/**14203 * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt14204 * @dev_d: pointer to device14205 *14206 * This routine is to be called from the kernel's PCI subsystem to support14207 * system Power Management (PM) to device with SLI-3 interface spec. When14208 * PM invokes this method, it quiesces the device by stopping the driver's14209 * worker thread for the device, turning off device's interrupt and DMA,14210 * and bring the device offline. Note that as the driver implements the14211 * minimum PM requirements to a power-aware driver's PM support for the14212 * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)14213 * to the suspend() method call will be treated as SUSPEND and the driver will14214 * fully reinitialize its device during resume() method call, the driver will14215 * set device to PCI_D3hot state in PCI config space instead of setting it14216 * according to the @msg provided by the PM.14217 *14218 * Return code14219 * 	0 - driver suspended the device14220 * 	Error otherwise14221 **/14222static int __maybe_unused14223lpfc_pci_suspend_one_s3(struct device *dev_d)14224{14225	struct Scsi_Host *shost = dev_get_drvdata(dev_d);14226	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;14227 14228	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,14229			"0473 PCI device Power Management suspend.\n");14230 14231	/* Bring down the device */14232	lpfc_offline_prep(phba, LPFC_MBX_WAIT);14233	lpfc_offline(phba);14234	kthread_stop(phba->worker_thread);14235 14236	/* Disable interrupt from device */14237	lpfc_sli_disable_intr(phba);14238 14239	return 0;14240}14241 14242/**14243 * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt14244 * @dev_d: pointer to device14245 *14246 * This routine is to be called from the kernel's PCI subsystem to support14247 * system Power Management (PM) to device with SLI-3 interface spec. When PM14248 * invokes this method, it restores the device's PCI config space state and14249 * fully reinitializes the device and brings it online. Note that as the14250 * driver implements the minimum PM requirements to a power-aware driver's14251 * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,14252 * FREEZE) to the suspend() method call will be treated as SUSPEND and the14253 * driver will fully reinitialize its device during resume() method call,14254 * the device will be set to PCI_D0 directly in PCI config space before14255 * restoring the state.14256 *14257 * Return code14258 * 	0 - driver suspended the device14259 * 	Error otherwise14260 **/14261static int __maybe_unused14262lpfc_pci_resume_one_s3(struct device *dev_d)14263{14264	struct Scsi_Host *shost = dev_get_drvdata(dev_d);14265	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;14266	uint32_t intr_mode;14267	int error;14268 14269	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,14270			"0452 PCI device Power Management resume.\n");14271 14272	/* Startup the kernel thread for this host adapter. */14273	phba->worker_thread = kthread_run(lpfc_do_work, phba,14274					"lpfc_worker_%d", phba->brd_no);14275	if (IS_ERR(phba->worker_thread)) {14276		error = PTR_ERR(phba->worker_thread);14277		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,14278				"0434 PM resume failed to start worker "14279				"thread: error=x%x.\n", error);14280		return error;14281	}14282 14283	/* Init cpu_map array */14284	lpfc_cpu_map_array_init(phba);14285	/* Init hba_eq_hdl array */14286	lpfc_hba_eq_hdl_array_init(phba);14287	/* Configure and enable interrupt */14288	intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);14289	if (intr_mode == LPFC_INTR_ERROR) {14290		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14291				"0430 PM resume Failed to enable interrupt\n");14292		return -EIO;14293	} else14294		phba->intr_mode = intr_mode;14295 14296	/* Restart HBA and bring it online */14297	lpfc_sli_brdrestart(phba);14298	lpfc_online(phba);14299 14300	/* Log the current active interrupt mode */14301	lpfc_log_intr_mode(phba, phba->intr_mode);14302 14303	return 0;14304}14305 14306/**14307 * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover14308 * @phba: pointer to lpfc hba data structure.14309 *14310 * This routine is called to prepare the SLI3 device for PCI slot recover. It14311 * aborts all the outstanding SCSI I/Os to the pci device.14312 **/14313static void14314lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)14315{14316	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14317			"2723 PCI channel I/O abort preparing for recovery\n");14318 14319	/*14320	 * There may be errored I/Os through HBA, abort all I/Os on txcmplq14321	 * and let the SCSI mid-layer to retry them to recover.14322	 */14323	lpfc_sli_abort_fcp_rings(phba);14324}14325 14326/**14327 * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset14328 * @phba: pointer to lpfc hba data structure.14329 *14330 * This routine is called to prepare the SLI3 device for PCI slot reset. It14331 * disables the device interrupt and pci device, and aborts the internal FCP14332 * pending I/Os.14333 **/14334static void14335lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)14336{14337	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14338			"2710 PCI channel disable preparing for reset\n");14339 14340	/* Block any management I/Os to the device */14341	lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);14342 14343	/* Block all SCSI devices' I/Os on the host */14344	lpfc_scsi_dev_block(phba);14345 14346	/* Flush all driver's outstanding SCSI I/Os as we are to reset */14347	lpfc_sli_flush_io_rings(phba);14348 14349	/* stop all timers */14350	lpfc_stop_hba_timers(phba);14351 14352	/* Disable interrupt and pci device */14353	lpfc_sli_disable_intr(phba);14354	pci_disable_device(phba->pcidev);14355}14356 14357/**14358 * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable14359 * @phba: pointer to lpfc hba data structure.14360 *14361 * This routine is called to prepare the SLI3 device for PCI slot permanently14362 * disabling. It blocks the SCSI transport layer traffic and flushes the FCP14363 * pending I/Os.14364 **/14365static void14366lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)14367{14368	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14369			"2711 PCI channel permanent disable for failure\n");14370	/* Block all SCSI devices' I/Os on the host */14371	lpfc_scsi_dev_block(phba);14372	lpfc_sli4_prep_dev_for_reset(phba);14373 14374	/* stop all timers */14375	lpfc_stop_hba_timers(phba);14376 14377	/* Clean up all driver's outstanding SCSI I/Os */14378	lpfc_sli_flush_io_rings(phba);14379}14380 14381/**14382 * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error14383 * @pdev: pointer to PCI device.14384 * @state: the current PCI connection state.14385 *14386 * This routine is called from the PCI subsystem for I/O error handling to14387 * device with SLI-3 interface spec. This function is called by the PCI14388 * subsystem after a PCI bus error affecting this device has been detected.14389 * When this function is invoked, it will need to stop all the I/Os and14390 * interrupt(s) to the device. Once that is done, it will return14391 * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery14392 * as desired.14393 *14394 * Return codes14395 * 	PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link14396 * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery14397 * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered14398 **/14399static pci_ers_result_t14400lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)14401{14402	struct Scsi_Host *shost = pci_get_drvdata(pdev);14403	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;14404 14405	switch (state) {14406	case pci_channel_io_normal:14407		/* Non-fatal error, prepare for recovery */14408		lpfc_sli_prep_dev_for_recover(phba);14409		return PCI_ERS_RESULT_CAN_RECOVER;14410	case pci_channel_io_frozen:14411		/* Fatal error, prepare for slot reset */14412		lpfc_sli_prep_dev_for_reset(phba);14413		return PCI_ERS_RESULT_NEED_RESET;14414	case pci_channel_io_perm_failure:14415		/* Permanent failure, prepare for device down */14416		lpfc_sli_prep_dev_for_perm_failure(phba);14417		return PCI_ERS_RESULT_DISCONNECT;14418	default:14419		/* Unknown state, prepare and request slot reset */14420		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14421				"0472 Unknown PCI error state: x%x\n", state);14422		lpfc_sli_prep_dev_for_reset(phba);14423		return PCI_ERS_RESULT_NEED_RESET;14424	}14425}14426 14427/**14428 * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.14429 * @pdev: pointer to PCI device.14430 *14431 * This routine is called from the PCI subsystem for error handling to14432 * device with SLI-3 interface spec. This is called after PCI bus has been14433 * reset to restart the PCI card from scratch, as if from a cold-boot.14434 * During the PCI subsystem error recovery, after driver returns14435 * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error14436 * recovery and then call this routine before calling the .resume method14437 * to recover the device. This function will initialize the HBA device,14438 * enable the interrupt, but it will just put the HBA to offline state14439 * without passing any I/O traffic.14440 *14441 * Return codes14442 * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered14443 * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered14444 */14445static pci_ers_result_t14446lpfc_io_slot_reset_s3(struct pci_dev *pdev)14447{14448	struct Scsi_Host *shost = pci_get_drvdata(pdev);14449	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;14450	struct lpfc_sli *psli = &phba->sli;14451	uint32_t intr_mode;14452 14453	dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");14454	if (pci_enable_device_mem(pdev)) {14455		printk(KERN_ERR "lpfc: Cannot re-enable "14456			"PCI device after reset.\n");14457		return PCI_ERS_RESULT_DISCONNECT;14458	}14459 14460	pci_restore_state(pdev);14461 14462	/*14463	 * As the new kernel behavior of pci_restore_state() API call clears14464	 * device saved_state flag, need to save the restored state again.14465	 */14466	pci_save_state(pdev);14467 14468	if (pdev->is_busmaster)14469		pci_set_master(pdev);14470 14471	spin_lock_irq(&phba->hbalock);14472	psli->sli_flag &= ~LPFC_SLI_ACTIVE;14473	spin_unlock_irq(&phba->hbalock);14474 14475	/* Configure and enable interrupt */14476	intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);14477	if (intr_mode == LPFC_INTR_ERROR) {14478		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14479				"0427 Cannot re-enable interrupt after "14480				"slot reset.\n");14481		return PCI_ERS_RESULT_DISCONNECT;14482	} else14483		phba->intr_mode = intr_mode;14484 14485	/* Take device offline, it will perform cleanup */14486	lpfc_offline_prep(phba, LPFC_MBX_WAIT);14487	lpfc_offline(phba);14488	lpfc_sli_brdrestart(phba);14489 14490	/* Log the current active interrupt mode */14491	lpfc_log_intr_mode(phba, phba->intr_mode);14492 14493	return PCI_ERS_RESULT_RECOVERED;14494}14495 14496/**14497 * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.14498 * @pdev: pointer to PCI device14499 *14500 * This routine is called from the PCI subsystem for error handling to device14501 * with SLI-3 interface spec. It is called when kernel error recovery tells14502 * the lpfc driver that it is ok to resume normal PCI operation after PCI bus14503 * error recovery. After this call, traffic can start to flow from this device14504 * again.14505 */14506static void14507lpfc_io_resume_s3(struct pci_dev *pdev)14508{14509	struct Scsi_Host *shost = pci_get_drvdata(pdev);14510	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;14511 14512	/* Bring device online, it will be no-op for non-fatal error resume */14513	lpfc_online(phba);14514}14515 14516/**14517 * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve14518 * @phba: pointer to lpfc hba data structure.14519 *14520 * returns the number of ELS/CT IOCBs to reserve14521 **/14522int14523lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)14524{14525	int max_xri = phba->sli4_hba.max_cfg_param.max_xri;14526 14527	if (phba->sli_rev == LPFC_SLI_REV4) {14528		if (max_xri <= 100)14529			return 10;14530		else if (max_xri <= 256)14531			return 25;14532		else if (max_xri <= 512)14533			return 50;14534		else if (max_xri <= 1024)14535			return 100;14536		else if (max_xri <= 1536)14537			return 150;14538		else if (max_xri <= 2048)14539			return 200;14540		else14541			return 250;14542	} else14543		return 0;14544}14545 14546/**14547 * lpfc_sli4_get_iocb_cnt - Calculate the # of total IOCBs to reserve14548 * @phba: pointer to lpfc hba data structure.14549 *14550 * returns the number of ELS/CT + NVMET IOCBs to reserve14551 **/14552int14553lpfc_sli4_get_iocb_cnt(struct lpfc_hba *phba)14554{14555	int max_xri = lpfc_sli4_get_els_iocb_cnt(phba);14556 14557	if (phba->nvmet_support)14558		max_xri += LPFC_NVMET_BUF_POST;14559	return max_xri;14560}14561 14562 14563static int14564lpfc_log_write_firmware_error(struct lpfc_hba *phba, uint32_t offset,14565	uint32_t magic_number, uint32_t ftype, uint32_t fid, uint32_t fsize,14566	const struct firmware *fw)14567{14568	int rc;14569	u8 sli_family;14570 14571	sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf);14572	/* Three cases:  (1) FW was not supported on the detected adapter.14573	 * (2) FW update has been locked out administratively.14574	 * (3) Some other error during FW update.14575	 * In each case, an unmaskable message is written to the console14576	 * for admin diagnosis.14577	 */14578	if (offset == ADD_STATUS_FW_NOT_SUPPORTED ||14579	    (sli_family == LPFC_SLI_INTF_FAMILY_G6 &&14580	     magic_number != MAGIC_NUMBER_G6) ||14581	    (sli_family == LPFC_SLI_INTF_FAMILY_G7 &&14582	     magic_number != MAGIC_NUMBER_G7) ||14583	    (sli_family == LPFC_SLI_INTF_FAMILY_G7P &&14584	     magic_number != MAGIC_NUMBER_G7P)) {14585		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14586				"3030 This firmware version is not supported on"14587				" this HBA model. Device:%x Magic:%x Type:%x "14588				"ID:%x Size %d %zd\n",14589				phba->pcidev->device, magic_number, ftype, fid,14590				fsize, fw->size);14591		rc = -EINVAL;14592	} else if (offset == ADD_STATUS_FW_DOWNLOAD_HW_DISABLED) {14593		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14594				"3021 Firmware downloads have been prohibited "14595				"by a system configuration setting on "14596				"Device:%x Magic:%x Type:%x ID:%x Size %d "14597				"%zd\n",14598				phba->pcidev->device, magic_number, ftype, fid,14599				fsize, fw->size);14600		rc = -EACCES;14601	} else {14602		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14603				"3022 FW Download failed. Add Status x%x "14604				"Device:%x Magic:%x Type:%x ID:%x Size %d "14605				"%zd\n",14606				offset, phba->pcidev->device, magic_number,14607				ftype, fid, fsize, fw->size);14608		rc = -EIO;14609	}14610	return rc;14611}14612 14613/**14614 * lpfc_write_firmware - attempt to write a firmware image to the port14615 * @fw: pointer to firmware image returned from request_firmware.14616 * @context: pointer to firmware image returned from request_firmware.14617 *14618 **/14619static void14620lpfc_write_firmware(const struct firmware *fw, void *context)14621{14622	struct lpfc_hba *phba = (struct lpfc_hba *)context;14623	char fwrev[FW_REV_STR_SIZE];14624	struct lpfc_grp_hdr *image;14625	struct list_head dma_buffer_list;14626	int i, rc = 0;14627	struct lpfc_dmabuf *dmabuf, *next;14628	uint32_t offset = 0, temp_offset = 0;14629	uint32_t magic_number, ftype, fid, fsize;14630 14631	/* It can be null in no-wait mode, sanity check */14632	if (!fw) {14633		rc = -ENXIO;14634		goto out;14635	}14636	image = (struct lpfc_grp_hdr *)fw->data;14637 14638	magic_number = be32_to_cpu(image->magic_number);14639	ftype = bf_get_be32(lpfc_grp_hdr_file_type, image);14640	fid = bf_get_be32(lpfc_grp_hdr_id, image);14641	fsize = be32_to_cpu(image->size);14642 14643	INIT_LIST_HEAD(&dma_buffer_list);14644	lpfc_decode_firmware_rev(phba, fwrev, 1);14645	if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {14646		lpfc_log_msg(phba, KERN_NOTICE, LOG_INIT | LOG_SLI,14647			     "3023 Updating Firmware, Current Version:%s "14648			     "New Version:%s\n",14649			     fwrev, image->revision);14650		for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {14651			dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),14652					 GFP_KERNEL);14653			if (!dmabuf) {14654				rc = -ENOMEM;14655				goto release_out;14656			}14657			dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,14658							  SLI4_PAGE_SIZE,14659							  &dmabuf->phys,14660							  GFP_KERNEL);14661			if (!dmabuf->virt) {14662				kfree(dmabuf);14663				rc = -ENOMEM;14664				goto release_out;14665			}14666			list_add_tail(&dmabuf->list, &dma_buffer_list);14667		}14668		while (offset < fw->size) {14669			temp_offset = offset;14670			list_for_each_entry(dmabuf, &dma_buffer_list, list) {14671				if (temp_offset + SLI4_PAGE_SIZE > fw->size) {14672					memcpy(dmabuf->virt,14673					       fw->data + temp_offset,14674					       fw->size - temp_offset);14675					temp_offset = fw->size;14676					break;14677				}14678				memcpy(dmabuf->virt, fw->data + temp_offset,14679				       SLI4_PAGE_SIZE);14680				temp_offset += SLI4_PAGE_SIZE;14681			}14682			rc = lpfc_wr_object(phba, &dma_buffer_list,14683				    (fw->size - offset), &offset);14684			if (rc) {14685				rc = lpfc_log_write_firmware_error(phba, offset,14686								   magic_number,14687								   ftype,14688								   fid,14689								   fsize,14690								   fw);14691				goto release_out;14692			}14693		}14694		rc = offset;14695	} else14696		lpfc_log_msg(phba, KERN_NOTICE, LOG_INIT | LOG_SLI,14697			     "3029 Skipped Firmware update, Current "14698			     "Version:%s New Version:%s\n",14699			     fwrev, image->revision);14700 14701release_out:14702	list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {14703		list_del(&dmabuf->list);14704		dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,14705				  dmabuf->virt, dmabuf->phys);14706		kfree(dmabuf);14707	}14708	release_firmware(fw);14709out:14710	if (rc < 0)14711		lpfc_log_msg(phba, KERN_ERR, LOG_INIT | LOG_SLI,14712			     "3062 Firmware update error, status %d.\n", rc);14713	else14714		lpfc_log_msg(phba, KERN_NOTICE, LOG_INIT | LOG_SLI,14715			     "3024 Firmware update success: size %d.\n", rc);14716}14717 14718/**14719 * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade14720 * @phba: pointer to lpfc hba data structure.14721 * @fw_upgrade: which firmware to update.14722 *14723 * This routine is called to perform Linux generic firmware upgrade on device14724 * that supports such feature.14725 **/14726int14727lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade)14728{14729	char file_name[ELX_FW_NAME_SIZE] = {0};14730	int ret;14731	const struct firmware *fw;14732 14733	/* Only supported on SLI4 interface type 2 for now */14734	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <14735	    LPFC_SLI_INTF_IF_TYPE_2)14736		return -EPERM;14737 14738	scnprintf(file_name, sizeof(file_name), "%s.grp", phba->ModelName);14739 14740	if (fw_upgrade == INT_FW_UPGRADE) {14741		ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT,14742					file_name, &phba->pcidev->dev,14743					GFP_KERNEL, (void *)phba,14744					lpfc_write_firmware);14745	} else if (fw_upgrade == RUN_FW_UPGRADE) {14746		ret = request_firmware(&fw, file_name, &phba->pcidev->dev);14747		if (!ret)14748			lpfc_write_firmware(fw, (void *)phba);14749	} else {14750		ret = -EINVAL;14751	}14752 14753	return ret;14754}14755 14756/**14757 * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys14758 * @pdev: pointer to PCI device14759 * @pid: pointer to PCI device identifier14760 *14761 * This routine is called from the kernel's PCI subsystem to device with14762 * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is14763 * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific14764 * information of the device and driver to see if the driver state that it14765 * can support this kind of device. If the match is successful, the driver14766 * core invokes this routine. If this routine determines it can claim the HBA,14767 * it does all the initialization that it needs to do to handle the HBA14768 * properly.14769 *14770 * Return code14771 * 	0 - driver can claim the device14772 * 	negative value - driver can not claim the device14773 **/14774static int14775lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)14776{14777	struct lpfc_hba   *phba;14778	struct lpfc_vport *vport = NULL;14779	struct Scsi_Host  *shost = NULL;14780	int error;14781	uint32_t cfg_mode, intr_mode;14782 14783	/* Allocate memory for HBA structure */14784	phba = lpfc_hba_alloc(pdev);14785	if (!phba)14786		return -ENOMEM;14787 14788	INIT_LIST_HEAD(&phba->poll_list);14789 14790	/* Perform generic PCI device enabling operation */14791	error = lpfc_enable_pci_dev(phba);14792	if (error)14793		goto out_free_phba;14794 14795	/* Set up SLI API function jump table for PCI-device group-1 HBAs */14796	error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);14797	if (error)14798		goto out_disable_pci_dev;14799 14800	/* Set up SLI-4 specific device PCI memory space */14801	error = lpfc_sli4_pci_mem_setup(phba);14802	if (error) {14803		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,14804				"1410 Failed to set up pci memory space.\n");14805		goto out_disable_pci_dev;14806	}14807 14808	/* Set up SLI-4 Specific device driver resources */14809	error = lpfc_sli4_driver_resource_setup(phba);14810	if (error) {14811		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,14812				"1412 Failed to set up driver resource.\n");14813		goto out_unset_pci_mem_s4;14814	}14815 14816	spin_lock_init(&phba->rrq_list_lock);14817	INIT_LIST_HEAD(&phba->active_rrq_list);14818	INIT_LIST_HEAD(&phba->fcf.fcf_pri_list);14819 14820	/* Set up common device driver resources */14821	error = lpfc_setup_driver_resource_phase2(phba);14822	if (error) {14823		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,14824				"1414 Failed to set up driver resource.\n");14825		goto out_unset_driver_resource_s4;14826	}14827 14828	/* Get the default values for Model Name and Description */14829	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);14830 14831	/* Now, trying to enable interrupt and bring up the device */14832	cfg_mode = phba->cfg_use_msi;14833 14834	/* Put device to a known state before enabling interrupt */14835	phba->pport = NULL;14836	lpfc_stop_port(phba);14837 14838	/* Init cpu_map array */14839	lpfc_cpu_map_array_init(phba);14840 14841	/* Init hba_eq_hdl array */14842	lpfc_hba_eq_hdl_array_init(phba);14843 14844	/* Configure and enable interrupt */14845	intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);14846	if (intr_mode == LPFC_INTR_ERROR) {14847		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14848				"0426 Failed to enable interrupt.\n");14849		error = -ENODEV;14850		goto out_unset_driver_resource;14851	}14852	/* Default to single EQ for non-MSI-X */14853	if (phba->intr_type != MSIX) {14854		phba->cfg_irq_chann = 1;14855		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {14856			if (phba->nvmet_support)14857				phba->cfg_nvmet_mrq = 1;14858		}14859	}14860	lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);14861 14862	/* Create SCSI host to the physical port */14863	error = lpfc_create_shost(phba);14864	if (error) {14865		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,14866				"1415 Failed to create scsi host.\n");14867		goto out_disable_intr;14868	}14869	vport = phba->pport;14870	shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */14871 14872	/* Configure sysfs attributes */14873	error = lpfc_alloc_sysfs_attr(vport);14874	if (error) {14875		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,14876				"1416 Failed to allocate sysfs attr\n");14877		goto out_destroy_shost;14878	}14879 14880	/* Set up SLI-4 HBA */14881	if (lpfc_sli4_hba_setup(phba)) {14882		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14883				"1421 Failed to set up hba\n");14884		error = -ENODEV;14885		goto out_free_sysfs_attr;14886	}14887 14888	/* Log the current active interrupt mode */14889	phba->intr_mode = intr_mode;14890	lpfc_log_intr_mode(phba, intr_mode);14891 14892	/* Perform post initialization setup */14893	lpfc_post_init_setup(phba);14894 14895	/* NVME support in FW earlier in the driver load corrects the14896	 * FC4 type making a check for nvme_support unnecessary.14897	 */14898	if (phba->nvmet_support == 0) {14899		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {14900			/* Create NVME binding with nvme_fc_transport. This14901			 * ensures the vport is initialized.  If the localport14902			 * create fails, it should not unload the driver to14903			 * support field issues.14904			 */14905			error = lpfc_nvme_create_localport(vport);14906			if (error) {14907				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,14908						"6004 NVME registration "14909						"failed, error x%x\n",14910						error);14911			}14912		}14913	}14914 14915	/* check for firmware upgrade or downgrade */14916	if (phba->cfg_request_firmware_upgrade)14917		lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE);14918 14919	/* Check if there are static vports to be created. */14920	lpfc_create_static_vport(phba);14921 14922	timer_setup(&phba->cpuhp_poll_timer, lpfc_sli4_poll_hbtimer, 0);14923	cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state, &phba->cpuhp);14924 14925	return 0;14926 14927out_free_sysfs_attr:14928	lpfc_free_sysfs_attr(vport);14929out_destroy_shost:14930	lpfc_destroy_shost(phba);14931out_disable_intr:14932	lpfc_sli4_disable_intr(phba);14933out_unset_driver_resource:14934	lpfc_unset_driver_resource_phase2(phba);14935out_unset_driver_resource_s4:14936	lpfc_sli4_driver_resource_unset(phba);14937out_unset_pci_mem_s4:14938	lpfc_sli4_pci_mem_unset(phba);14939out_disable_pci_dev:14940	lpfc_disable_pci_dev(phba);14941	if (shost)14942		scsi_host_put(shost);14943out_free_phba:14944	lpfc_hba_free(phba);14945	return error;14946}14947 14948/**14949 * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem14950 * @pdev: pointer to PCI device14951 *14952 * This routine is called from the kernel's PCI subsystem to device with14953 * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is14954 * removed from PCI bus, it performs all the necessary cleanup for the HBA14955 * device to be removed from the PCI subsystem properly.14956 **/14957static void14958lpfc_pci_remove_one_s4(struct pci_dev *pdev)14959{14960	struct Scsi_Host *shost = pci_get_drvdata(pdev);14961	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;14962	struct lpfc_vport **vports;14963	struct lpfc_hba *phba = vport->phba;14964	int i;14965 14966	/* Mark the device unloading flag */14967	set_bit(FC_UNLOADING, &vport->load_flag);14968	if (phba->cgn_i)14969		lpfc_unreg_congestion_buf(phba);14970 14971	lpfc_free_sysfs_attr(vport);14972 14973	/* Release all the vports against this physical port */14974	vports = lpfc_create_vport_work_array(phba);14975	if (vports != NULL)14976		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {14977			if (vports[i]->port_type == LPFC_PHYSICAL_PORT)14978				continue;14979			fc_vport_terminate(vports[i]->fc_vport);14980		}14981	lpfc_destroy_vport_work_array(phba, vports);14982 14983	/* Remove FC host with the physical port */14984	fc_remove_host(shost);14985	scsi_remove_host(shost);14986 14987	/* Perform ndlp cleanup on the physical port.  The nvme and nvmet14988	 * localports are destroyed after to cleanup all transport memory.14989	 */14990	lpfc_cleanup(vport);14991	lpfc_nvmet_destroy_targetport(phba);14992	lpfc_nvme_destroy_localport(vport);14993 14994	/* De-allocate multi-XRI pools */14995	if (phba->cfg_xri_rebalancing)14996		lpfc_destroy_multixri_pools(phba);14997 14998	/*14999	 * Bring down the SLI Layer. This step disables all interrupts,15000	 * clears the rings, discards all mailbox commands, and resets15001	 * the HBA FCoE function.15002	 */15003	lpfc_debugfs_terminate(vport);15004 15005	lpfc_stop_hba_timers(phba);15006	spin_lock_irq(&phba->port_list_lock);15007	list_del_init(&vport->listentry);15008	spin_unlock_irq(&phba->port_list_lock);15009 15010	/* Perform scsi free before driver resource_unset since scsi15011	 * buffers are released to their corresponding pools here.15012	 */15013	lpfc_io_free(phba);15014	lpfc_free_iocb_list(phba);15015	lpfc_sli4_hba_unset(phba);15016 15017	lpfc_unset_driver_resource_phase2(phba);15018	lpfc_sli4_driver_resource_unset(phba);15019 15020	/* Unmap adapter Control and Doorbell registers */15021	lpfc_sli4_pci_mem_unset(phba);15022 15023	/* Release PCI resources and disable device's PCI function */15024	scsi_host_put(shost);15025	lpfc_disable_pci_dev(phba);15026 15027	/* Finally, free the driver's device data structure */15028	lpfc_hba_free(phba);15029 15030	return;15031}15032 15033/**15034 * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt15035 * @dev_d: pointer to device15036 *15037 * This routine is called from the kernel's PCI subsystem to support system15038 * Power Management (PM) to device with SLI-4 interface spec. When PM invokes15039 * this method, it quiesces the device by stopping the driver's worker15040 * thread for the device, turning off device's interrupt and DMA, and bring15041 * the device offline. Note that as the driver implements the minimum PM15042 * requirements to a power-aware driver's PM support for suspend/resume -- all15043 * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()15044 * method call will be treated as SUSPEND and the driver will fully15045 * reinitialize its device during resume() method call, the driver will set15046 * device to PCI_D3hot state in PCI config space instead of setting it15047 * according to the @msg provided by the PM.15048 *15049 * Return code15050 * 	0 - driver suspended the device15051 * 	Error otherwise15052 **/15053static int __maybe_unused15054lpfc_pci_suspend_one_s4(struct device *dev_d)15055{15056	struct Scsi_Host *shost = dev_get_drvdata(dev_d);15057	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15058 15059	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,15060			"2843 PCI device Power Management suspend.\n");15061 15062	/* Bring down the device */15063	lpfc_offline_prep(phba, LPFC_MBX_WAIT);15064	lpfc_offline(phba);15065	kthread_stop(phba->worker_thread);15066 15067	/* Disable interrupt from device */15068	lpfc_sli4_disable_intr(phba);15069	lpfc_sli4_queue_destroy(phba);15070 15071	return 0;15072}15073 15074/**15075 * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt15076 * @dev_d: pointer to device15077 *15078 * This routine is called from the kernel's PCI subsystem to support system15079 * Power Management (PM) to device with SLI-4 interface spac. When PM invokes15080 * this method, it restores the device's PCI config space state and fully15081 * reinitializes the device and brings it online. Note that as the driver15082 * implements the minimum PM requirements to a power-aware driver's PM for15083 * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)15084 * to the suspend() method call will be treated as SUSPEND and the driver15085 * will fully reinitialize its device during resume() method call, the device15086 * will be set to PCI_D0 directly in PCI config space before restoring the15087 * state.15088 *15089 * Return code15090 * 	0 - driver suspended the device15091 * 	Error otherwise15092 **/15093static int __maybe_unused15094lpfc_pci_resume_one_s4(struct device *dev_d)15095{15096	struct Scsi_Host *shost = dev_get_drvdata(dev_d);15097	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15098	uint32_t intr_mode;15099	int error;15100 15101	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,15102			"0292 PCI device Power Management resume.\n");15103 15104	 /* Startup the kernel thread for this host adapter. */15105	phba->worker_thread = kthread_run(lpfc_do_work, phba,15106					"lpfc_worker_%d", phba->brd_no);15107	if (IS_ERR(phba->worker_thread)) {15108		error = PTR_ERR(phba->worker_thread);15109		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,15110				"0293 PM resume failed to start worker "15111				"thread: error=x%x.\n", error);15112		return error;15113	}15114 15115	/* Configure and enable interrupt */15116	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);15117	if (intr_mode == LPFC_INTR_ERROR) {15118		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15119				"0294 PM resume Failed to enable interrupt\n");15120		return -EIO;15121	} else15122		phba->intr_mode = intr_mode;15123 15124	/* Restart HBA and bring it online */15125	lpfc_sli_brdrestart(phba);15126	lpfc_online(phba);15127 15128	/* Log the current active interrupt mode */15129	lpfc_log_intr_mode(phba, phba->intr_mode);15130 15131	return 0;15132}15133 15134/**15135 * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover15136 * @phba: pointer to lpfc hba data structure.15137 *15138 * This routine is called to prepare the SLI4 device for PCI slot recover. It15139 * aborts all the outstanding SCSI I/Os to the pci device.15140 **/15141static void15142lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)15143{15144	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15145			"2828 PCI channel I/O abort preparing for recovery\n");15146	/*15147	 * There may be errored I/Os through HBA, abort all I/Os on txcmplq15148	 * and let the SCSI mid-layer to retry them to recover.15149	 */15150	lpfc_sli_abort_fcp_rings(phba);15151}15152 15153/**15154 * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset15155 * @phba: pointer to lpfc hba data structure.15156 *15157 * This routine is called to prepare the SLI4 device for PCI slot reset. It15158 * disables the device interrupt and pci device, and aborts the internal FCP15159 * pending I/Os.15160 **/15161static void15162lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)15163{15164	int offline =  pci_channel_offline(phba->pcidev);15165 15166	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,15167			"2826 PCI channel disable preparing for reset offline"15168			" %d\n", offline);15169 15170	/* Block any management I/Os to the device */15171	lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);15172 15173 15174	/* HBA_PCI_ERR was set in io_error_detect */15175	lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);15176	/* Flush all driver's outstanding I/Os as we are to reset */15177	lpfc_sli_flush_io_rings(phba);15178	lpfc_offline(phba);15179 15180	/* stop all timers */15181	lpfc_stop_hba_timers(phba);15182 15183	lpfc_sli4_queue_destroy(phba);15184	/* Disable interrupt and pci device */15185	lpfc_sli4_disable_intr(phba);15186	pci_disable_device(phba->pcidev);15187}15188 15189/**15190 * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable15191 * @phba: pointer to lpfc hba data structure.15192 *15193 * This routine is called to prepare the SLI4 device for PCI slot permanently15194 * disabling. It blocks the SCSI transport layer traffic and flushes the FCP15195 * pending I/Os.15196 **/15197static void15198lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)15199{15200	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15201			"2827 PCI channel permanent disable for failure\n");15202 15203	/* Block all SCSI devices' I/Os on the host */15204	lpfc_scsi_dev_block(phba);15205 15206	/* stop all timers */15207	lpfc_stop_hba_timers(phba);15208 15209	/* Clean up all driver's outstanding I/Os */15210	lpfc_sli_flush_io_rings(phba);15211}15212 15213/**15214 * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device15215 * @pdev: pointer to PCI device.15216 * @state: the current PCI connection state.15217 *15218 * This routine is called from the PCI subsystem for error handling to device15219 * with SLI-4 interface spec. This function is called by the PCI subsystem15220 * after a PCI bus error affecting this device has been detected. When this15221 * function is invoked, it will need to stop all the I/Os and interrupt(s)15222 * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET15223 * for the PCI subsystem to perform proper recovery as desired.15224 *15225 * Return codes15226 * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery15227 * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered15228 **/15229static pci_ers_result_t15230lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)15231{15232	struct Scsi_Host *shost = pci_get_drvdata(pdev);15233	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15234	bool hba_pci_err;15235 15236	switch (state) {15237	case pci_channel_io_normal:15238		/* Non-fatal error, prepare for recovery */15239		lpfc_sli4_prep_dev_for_recover(phba);15240		return PCI_ERS_RESULT_CAN_RECOVER;15241	case pci_channel_io_frozen:15242		hba_pci_err = test_and_set_bit(HBA_PCI_ERR, &phba->bit_flags);15243		/* Fatal error, prepare for slot reset */15244		if (!hba_pci_err)15245			lpfc_sli4_prep_dev_for_reset(phba);15246		else15247			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,15248					"2832  Already handling PCI error "15249					"state: x%x\n", state);15250		return PCI_ERS_RESULT_NEED_RESET;15251	case pci_channel_io_perm_failure:15252		set_bit(HBA_PCI_ERR, &phba->bit_flags);15253		/* Permanent failure, prepare for device down */15254		lpfc_sli4_prep_dev_for_perm_failure(phba);15255		return PCI_ERS_RESULT_DISCONNECT;15256	default:15257		hba_pci_err = test_and_set_bit(HBA_PCI_ERR, &phba->bit_flags);15258		if (!hba_pci_err)15259			lpfc_sli4_prep_dev_for_reset(phba);15260		/* Unknown state, prepare and request slot reset */15261		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15262				"2825 Unknown PCI error state: x%x\n", state);15263		lpfc_sli4_prep_dev_for_reset(phba);15264		return PCI_ERS_RESULT_NEED_RESET;15265	}15266}15267 15268/**15269 * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch15270 * @pdev: pointer to PCI device.15271 *15272 * This routine is called from the PCI subsystem for error handling to device15273 * with SLI-4 interface spec. It is called after PCI bus has been reset to15274 * restart the PCI card from scratch, as if from a cold-boot. During the15275 * PCI subsystem error recovery, after the driver returns15276 * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error15277 * recovery and then call this routine before calling the .resume method to15278 * recover the device. This function will initialize the HBA device, enable15279 * the interrupt, but it will just put the HBA to offline state without15280 * passing any I/O traffic.15281 *15282 * Return codes15283 * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered15284 * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered15285 */15286static pci_ers_result_t15287lpfc_io_slot_reset_s4(struct pci_dev *pdev)15288{15289	struct Scsi_Host *shost = pci_get_drvdata(pdev);15290	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15291	struct lpfc_sli *psli = &phba->sli;15292	uint32_t intr_mode;15293	bool hba_pci_err;15294 15295	dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");15296	if (pci_enable_device_mem(pdev)) {15297		printk(KERN_ERR "lpfc: Cannot re-enable "15298		       "PCI device after reset.\n");15299		return PCI_ERS_RESULT_DISCONNECT;15300	}15301 15302	pci_restore_state(pdev);15303 15304	hba_pci_err = test_and_clear_bit(HBA_PCI_ERR, &phba->bit_flags);15305	if (!hba_pci_err)15306		dev_info(&pdev->dev,15307			 "hba_pci_err was not set, recovering slot reset.\n");15308	/*15309	 * As the new kernel behavior of pci_restore_state() API call clears15310	 * device saved_state flag, need to save the restored state again.15311	 */15312	pci_save_state(pdev);15313 15314	if (pdev->is_busmaster)15315		pci_set_master(pdev);15316 15317	spin_lock_irq(&phba->hbalock);15318	psli->sli_flag &= ~LPFC_SLI_ACTIVE;15319	spin_unlock_irq(&phba->hbalock);15320 15321	/* Init cpu_map array */15322	lpfc_cpu_map_array_init(phba);15323	/* Configure and enable interrupt */15324	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);15325	if (intr_mode == LPFC_INTR_ERROR) {15326		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15327				"2824 Cannot re-enable interrupt after "15328				"slot reset.\n");15329		return PCI_ERS_RESULT_DISCONNECT;15330	} else15331		phba->intr_mode = intr_mode;15332	lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);15333 15334	/* Log the current active interrupt mode */15335	lpfc_log_intr_mode(phba, phba->intr_mode);15336 15337	return PCI_ERS_RESULT_RECOVERED;15338}15339 15340/**15341 * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device15342 * @pdev: pointer to PCI device15343 *15344 * This routine is called from the PCI subsystem for error handling to device15345 * with SLI-4 interface spec. It is called when kernel error recovery tells15346 * the lpfc driver that it is ok to resume normal PCI operation after PCI bus15347 * error recovery. After this call, traffic can start to flow from this device15348 * again.15349 **/15350static void15351lpfc_io_resume_s4(struct pci_dev *pdev)15352{15353	struct Scsi_Host *shost = pci_get_drvdata(pdev);15354	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15355 15356	/*15357	 * In case of slot reset, as function reset is performed through15358	 * mailbox command which needs DMA to be enabled, this operation15359	 * has to be moved to the io resume phase. Taking device offline15360	 * will perform the necessary cleanup.15361	 */15362	if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {15363		/* Perform device reset */15364		lpfc_sli_brdrestart(phba);15365		/* Bring the device back online */15366		lpfc_online(phba);15367	}15368}15369 15370/**15371 * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem15372 * @pdev: pointer to PCI device15373 * @pid: pointer to PCI device identifier15374 *15375 * This routine is to be registered to the kernel's PCI subsystem. When an15376 * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks15377 * at PCI device-specific information of the device and driver to see if the15378 * driver state that it can support this kind of device. If the match is15379 * successful, the driver core invokes this routine. This routine dispatches15380 * the action to the proper SLI-3 or SLI-4 device probing routine, which will15381 * do all the initialization that it needs to do to handle the HBA device15382 * properly.15383 *15384 * Return code15385 * 	0 - driver can claim the device15386 * 	negative value - driver can not claim the device15387 **/15388static int15389lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)15390{15391	int rc;15392	struct lpfc_sli_intf intf;15393 15394	if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))15395		return -ENODEV;15396 15397	if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&15398	    (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))15399		rc = lpfc_pci_probe_one_s4(pdev, pid);15400	else15401		rc = lpfc_pci_probe_one_s3(pdev, pid);15402 15403	return rc;15404}15405 15406/**15407 * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem15408 * @pdev: pointer to PCI device15409 *15410 * This routine is to be registered to the kernel's PCI subsystem. When an15411 * Emulex HBA is removed from PCI bus, the driver core invokes this routine.15412 * This routine dispatches the action to the proper SLI-3 or SLI-4 device15413 * remove routine, which will perform all the necessary cleanup for the15414 * device to be removed from the PCI subsystem properly.15415 **/15416static void15417lpfc_pci_remove_one(struct pci_dev *pdev)15418{15419	struct Scsi_Host *shost = pci_get_drvdata(pdev);15420	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15421 15422	switch (phba->pci_dev_grp) {15423	case LPFC_PCI_DEV_LP:15424		lpfc_pci_remove_one_s3(pdev);15425		break;15426	case LPFC_PCI_DEV_OC:15427		lpfc_pci_remove_one_s4(pdev);15428		break;15429	default:15430		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15431				"1424 Invalid PCI device group: 0x%x\n",15432				phba->pci_dev_grp);15433		break;15434	}15435	return;15436}15437 15438/**15439 * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management15440 * @dev: pointer to device15441 *15442 * This routine is to be registered to the kernel's PCI subsystem to support15443 * system Power Management (PM). When PM invokes this method, it dispatches15444 * the action to the proper SLI-3 or SLI-4 device suspend routine, which will15445 * suspend the device.15446 *15447 * Return code15448 * 	0 - driver suspended the device15449 * 	Error otherwise15450 **/15451static int __maybe_unused15452lpfc_pci_suspend_one(struct device *dev)15453{15454	struct Scsi_Host *shost = dev_get_drvdata(dev);15455	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15456	int rc = -ENODEV;15457 15458	switch (phba->pci_dev_grp) {15459	case LPFC_PCI_DEV_LP:15460		rc = lpfc_pci_suspend_one_s3(dev);15461		break;15462	case LPFC_PCI_DEV_OC:15463		rc = lpfc_pci_suspend_one_s4(dev);15464		break;15465	default:15466		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15467				"1425 Invalid PCI device group: 0x%x\n",15468				phba->pci_dev_grp);15469		break;15470	}15471	return rc;15472}15473 15474/**15475 * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management15476 * @dev: pointer to device15477 *15478 * This routine is to be registered to the kernel's PCI subsystem to support15479 * system Power Management (PM). When PM invokes this method, it dispatches15480 * the action to the proper SLI-3 or SLI-4 device resume routine, which will15481 * resume the device.15482 *15483 * Return code15484 * 	0 - driver suspended the device15485 * 	Error otherwise15486 **/15487static int __maybe_unused15488lpfc_pci_resume_one(struct device *dev)15489{15490	struct Scsi_Host *shost = dev_get_drvdata(dev);15491	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15492	int rc = -ENODEV;15493 15494	switch (phba->pci_dev_grp) {15495	case LPFC_PCI_DEV_LP:15496		rc = lpfc_pci_resume_one_s3(dev);15497		break;15498	case LPFC_PCI_DEV_OC:15499		rc = lpfc_pci_resume_one_s4(dev);15500		break;15501	default:15502		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15503				"1426 Invalid PCI device group: 0x%x\n",15504				phba->pci_dev_grp);15505		break;15506	}15507	return rc;15508}15509 15510/**15511 * lpfc_io_error_detected - lpfc method for handling PCI I/O error15512 * @pdev: pointer to PCI device.15513 * @state: the current PCI connection state.15514 *15515 * This routine is registered to the PCI subsystem for error handling. This15516 * function is called by the PCI subsystem after a PCI bus error affecting15517 * this device has been detected. When this routine is invoked, it dispatches15518 * the action to the proper SLI-3 or SLI-4 device error detected handling15519 * routine, which will perform the proper error detected operation.15520 *15521 * Return codes15522 * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery15523 * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered15524 **/15525static pci_ers_result_t15526lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)15527{15528	struct Scsi_Host *shost = pci_get_drvdata(pdev);15529	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15530	pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;15531 15532	if (phba->link_state == LPFC_HBA_ERROR &&15533	    test_bit(HBA_IOQ_FLUSH, &phba->hba_flag))15534		return PCI_ERS_RESULT_NEED_RESET;15535 15536	switch (phba->pci_dev_grp) {15537	case LPFC_PCI_DEV_LP:15538		rc = lpfc_io_error_detected_s3(pdev, state);15539		break;15540	case LPFC_PCI_DEV_OC:15541		rc = lpfc_io_error_detected_s4(pdev, state);15542		break;15543	default:15544		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15545				"1427 Invalid PCI device group: 0x%x\n",15546				phba->pci_dev_grp);15547		break;15548	}15549	return rc;15550}15551 15552/**15553 * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch15554 * @pdev: pointer to PCI device.15555 *15556 * This routine is registered to the PCI subsystem for error handling. This15557 * function is called after PCI bus has been reset to restart the PCI card15558 * from scratch, as if from a cold-boot. When this routine is invoked, it15559 * dispatches the action to the proper SLI-3 or SLI-4 device reset handling15560 * routine, which will perform the proper device reset.15561 *15562 * Return codes15563 * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered15564 * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered15565 **/15566static pci_ers_result_t15567lpfc_io_slot_reset(struct pci_dev *pdev)15568{15569	struct Scsi_Host *shost = pci_get_drvdata(pdev);15570	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15571	pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;15572 15573	switch (phba->pci_dev_grp) {15574	case LPFC_PCI_DEV_LP:15575		rc = lpfc_io_slot_reset_s3(pdev);15576		break;15577	case LPFC_PCI_DEV_OC:15578		rc = lpfc_io_slot_reset_s4(pdev);15579		break;15580	default:15581		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15582				"1428 Invalid PCI device group: 0x%x\n",15583				phba->pci_dev_grp);15584		break;15585	}15586	return rc;15587}15588 15589/**15590 * lpfc_io_resume - lpfc method for resuming PCI I/O operation15591 * @pdev: pointer to PCI device15592 *15593 * This routine is registered to the PCI subsystem for error handling. It15594 * is called when kernel error recovery tells the lpfc driver that it is15595 * OK to resume normal PCI operation after PCI bus error recovery. When15596 * this routine is invoked, it dispatches the action to the proper SLI-315597 * or SLI-4 device io_resume routine, which will resume the device operation.15598 **/15599static void15600lpfc_io_resume(struct pci_dev *pdev)15601{15602	struct Scsi_Host *shost = pci_get_drvdata(pdev);15603	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;15604 15605	switch (phba->pci_dev_grp) {15606	case LPFC_PCI_DEV_LP:15607		lpfc_io_resume_s3(pdev);15608		break;15609	case LPFC_PCI_DEV_OC:15610		lpfc_io_resume_s4(pdev);15611		break;15612	default:15613		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,15614				"1429 Invalid PCI device group: 0x%x\n",15615				phba->pci_dev_grp);15616		break;15617	}15618	return;15619}15620 15621/**15622 * lpfc_sli4_oas_verify - Verify OAS is supported by this adapter15623 * @phba: pointer to lpfc hba data structure.15624 *15625 * This routine checks to see if OAS is supported for this adapter. If15626 * supported, the configure Flash Optimized Fabric flag is set.  Otherwise,15627 * the enable oas flag is cleared and the pool created for OAS device data15628 * is destroyed.15629 *15630 **/15631static void15632lpfc_sli4_oas_verify(struct lpfc_hba *phba)15633{15634 15635	if (!phba->cfg_EnableXLane)15636		return;15637 15638	if (phba->sli4_hba.pc_sli4_params.oas_supported) {15639		phba->cfg_fof = 1;15640	} else {15641		phba->cfg_fof = 0;15642		mempool_destroy(phba->device_data_mem_pool);15643		phba->device_data_mem_pool = NULL;15644	}15645 15646	return;15647}15648 15649/**15650 * lpfc_sli4_ras_init - Verify RAS-FW log is supported by this adapter15651 * @phba: pointer to lpfc hba data structure.15652 *15653 * This routine checks to see if RAS is supported by the adapter. Check the15654 * function through which RAS support enablement is to be done.15655 **/15656void15657lpfc_sli4_ras_init(struct lpfc_hba *phba)15658{15659	/* if ASIC_GEN_NUM >= 0xC) */15660	if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==15661		    LPFC_SLI_INTF_IF_TYPE_6) ||15662	    (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==15663		    LPFC_SLI_INTF_FAMILY_G6)) {15664		phba->ras_fwlog.ras_hwsupport = true;15665		if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn) &&15666		    phba->cfg_ras_fwlog_buffsize)15667			phba->ras_fwlog.ras_enabled = true;15668		else15669			phba->ras_fwlog.ras_enabled = false;15670	} else {15671		phba->ras_fwlog.ras_hwsupport = false;15672	}15673}15674 15675 15676MODULE_DEVICE_TABLE(pci, lpfc_id_table);15677 15678static const struct pci_error_handlers lpfc_err_handler = {15679	.error_detected = lpfc_io_error_detected,15680	.slot_reset = lpfc_io_slot_reset,15681	.resume = lpfc_io_resume,15682};15683 15684static SIMPLE_DEV_PM_OPS(lpfc_pci_pm_ops_one,15685			 lpfc_pci_suspend_one,15686			 lpfc_pci_resume_one);15687 15688static struct pci_driver lpfc_driver = {15689	.name		= LPFC_DRIVER_NAME,15690	.id_table	= lpfc_id_table,15691	.probe		= lpfc_pci_probe_one,15692	.remove		= lpfc_pci_remove_one,15693	.shutdown	= lpfc_pci_remove_one,15694	.driver.pm	= &lpfc_pci_pm_ops_one,15695	.err_handler    = &lpfc_err_handler,15696};15697 15698static const struct file_operations lpfc_mgmt_fop = {15699	.owner = THIS_MODULE,15700};15701 15702static struct miscdevice lpfc_mgmt_dev = {15703	.minor = MISC_DYNAMIC_MINOR,15704	.name = "lpfcmgmt",15705	.fops = &lpfc_mgmt_fop,15706};15707 15708/**15709 * lpfc_init - lpfc module initialization routine15710 *15711 * This routine is to be invoked when the lpfc module is loaded into the15712 * kernel. The special kernel macro module_init() is used to indicate the15713 * role of this routine to the kernel as lpfc module entry point.15714 *15715 * Return codes15716 *   0 - successful15717 *   -ENOMEM - FC attach transport failed15718 *   all others - failed15719 */15720static int __init15721lpfc_init(void)15722{15723	int error = 0;15724 15725	pr_info(LPFC_MODULE_DESC "\n");15726	pr_info(LPFC_COPYRIGHT "\n");15727 15728	error = misc_register(&lpfc_mgmt_dev);15729	if (error)15730		printk(KERN_ERR "Could not register lpfcmgmt device, "15731			"misc_register returned with status %d", error);15732 15733	error = -ENOMEM;15734	lpfc_transport_functions.vport_create = lpfc_vport_create;15735	lpfc_transport_functions.vport_delete = lpfc_vport_delete;15736	lpfc_transport_template =15737				fc_attach_transport(&lpfc_transport_functions);15738	if (lpfc_transport_template == NULL)15739		goto unregister;15740	lpfc_vport_transport_template =15741		fc_attach_transport(&lpfc_vport_transport_functions);15742	if (lpfc_vport_transport_template == NULL) {15743		fc_release_transport(lpfc_transport_template);15744		goto unregister;15745	}15746	lpfc_wqe_cmd_template();15747	lpfc_nvmet_cmd_template();15748 15749	/* Initialize in case vector mapping is needed */15750	lpfc_present_cpu = num_present_cpus();15751 15752	lpfc_pldv_detect = false;15753 15754	error = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,15755					"lpfc/sli4:online",15756					lpfc_cpu_online, lpfc_cpu_offline);15757	if (error < 0)15758		goto cpuhp_failure;15759	lpfc_cpuhp_state = error;15760 15761	error = pci_register_driver(&lpfc_driver);15762	if (error)15763		goto unwind;15764 15765	return error;15766 15767unwind:15768	cpuhp_remove_multi_state(lpfc_cpuhp_state);15769cpuhp_failure:15770	fc_release_transport(lpfc_transport_template);15771	fc_release_transport(lpfc_vport_transport_template);15772unregister:15773	misc_deregister(&lpfc_mgmt_dev);15774 15775	return error;15776}15777 15778void lpfc_dmp_dbg(struct lpfc_hba *phba)15779{15780	unsigned int start_idx;15781	unsigned int dbg_cnt;15782	unsigned int temp_idx;15783	int i;15784	int j = 0;15785	unsigned long rem_nsec;15786 15787	if (atomic_cmpxchg(&phba->dbg_log_dmping, 0, 1) != 0)15788		return;15789 15790	start_idx = (unsigned int)atomic_read(&phba->dbg_log_idx) % DBG_LOG_SZ;15791	dbg_cnt = (unsigned int)atomic_read(&phba->dbg_log_cnt);15792	if (!dbg_cnt)15793		goto out;15794	temp_idx = start_idx;15795	if (dbg_cnt >= DBG_LOG_SZ) {15796		dbg_cnt = DBG_LOG_SZ;15797		temp_idx -= 1;15798	} else {15799		if ((start_idx + dbg_cnt) > (DBG_LOG_SZ - 1)) {15800			temp_idx = (start_idx + dbg_cnt) % DBG_LOG_SZ;15801		} else {15802			if (start_idx < dbg_cnt)15803				start_idx = DBG_LOG_SZ - (dbg_cnt - start_idx);15804			else15805				start_idx -= dbg_cnt;15806		}15807	}15808	dev_info(&phba->pcidev->dev, "start %d end %d cnt %d\n",15809		 start_idx, temp_idx, dbg_cnt);15810 15811	for (i = 0; i < dbg_cnt; i++) {15812		if ((start_idx + i) < DBG_LOG_SZ)15813			temp_idx = (start_idx + i) % DBG_LOG_SZ;15814		else15815			temp_idx = j++;15816		rem_nsec = do_div(phba->dbg_log[temp_idx].t_ns, NSEC_PER_SEC);15817		dev_info(&phba->pcidev->dev, "%d: [%5lu.%06lu] %s",15818			 temp_idx,15819			 (unsigned long)phba->dbg_log[temp_idx].t_ns,15820			 rem_nsec / 1000,15821			 phba->dbg_log[temp_idx].log);15822	}15823out:15824	atomic_set(&phba->dbg_log_cnt, 0);15825	atomic_set(&phba->dbg_log_dmping, 0);15826}15827 15828__printf(2, 3)15829void lpfc_dbg_print(struct lpfc_hba *phba, const char *fmt, ...)15830{15831	unsigned int idx;15832	va_list args;15833	int dbg_dmping = atomic_read(&phba->dbg_log_dmping);15834	struct va_format vaf;15835 15836 15837	va_start(args, fmt);15838	if (unlikely(dbg_dmping)) {15839		vaf.fmt = fmt;15840		vaf.va = &args;15841		dev_info(&phba->pcidev->dev, "%pV", &vaf);15842		va_end(args);15843		return;15844	}15845	idx = (unsigned int)atomic_fetch_add(1, &phba->dbg_log_idx) %15846		DBG_LOG_SZ;15847 15848	atomic_inc(&phba->dbg_log_cnt);15849 15850	vscnprintf(phba->dbg_log[idx].log,15851		   sizeof(phba->dbg_log[idx].log), fmt, args);15852	va_end(args);15853 15854	phba->dbg_log[idx].t_ns = local_clock();15855}15856 15857/**15858 * lpfc_exit - lpfc module removal routine15859 *15860 * This routine is invoked when the lpfc module is removed from the kernel.15861 * The special kernel macro module_exit() is used to indicate the role of15862 * this routine to the kernel as lpfc module exit point.15863 */15864static void __exit15865lpfc_exit(void)15866{15867	misc_deregister(&lpfc_mgmt_dev);15868	pci_unregister_driver(&lpfc_driver);15869	cpuhp_remove_multi_state(lpfc_cpuhp_state);15870	fc_release_transport(lpfc_transport_template);15871	fc_release_transport(lpfc_vport_transport_template);15872	idr_destroy(&lpfc_hba_index);15873}15874 15875module_init(lpfc_init);15876module_exit(lpfc_exit);15877MODULE_LICENSE("GPL");15878MODULE_DESCRIPTION(LPFC_MODULE_DESC);15879MODULE_AUTHOR("Broadcom");15880MODULE_VERSION("0:" LPFC_DRIVER_VERSION);15881