5862 lines · c
1/*2 * This file is part of the Emulex Linux Device Driver for Enterprise iSCSI3 * Host Bus Adapters. Refer to the README file included with this package4 * for driver version and adapter compatibility.5 *6 * Copyright (c) 2018 Broadcom. All Rights Reserved.7 * The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.8 *9 * This program is free software; you can redistribute it and/or modify it10 * under the terms of version 2 of the GNU General Public License as published11 * by the Free Software Foundation.12 *13 * This program is distributed in the hope that it will be useful. ALL EXPRESS14 * OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY15 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,16 * OR NON-INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH17 * DISCLAIMERS ARE HELD TO BE LEGALLY INVALID.18 * See the GNU General Public License for more details, a copy of which19 * can be found in the file COPYING included with this package.20 *21 * Contact Information:22 * linux-drivers@broadcom.com23 *24 */25 26#include <linux/reboot.h>27#include <linux/delay.h>28#include <linux/slab.h>29#include <linux/interrupt.h>30#include <linux/blkdev.h>31#include <linux/pci.h>32#include <linux/string.h>33#include <linux/kernel.h>34#include <linux/semaphore.h>35#include <linux/iscsi_boot_sysfs.h>36#include <linux/module.h>37#include <linux/bsg-lib.h>38#include <linux/irq_poll.h>39 40#include <scsi/libiscsi.h>41#include <scsi/scsi_bsg_iscsi.h>42#include <scsi/scsi_netlink.h>43#include <scsi/scsi_transport_iscsi.h>44#include <scsi/scsi_transport.h>45#include <scsi/scsi_cmnd.h>46#include <scsi/scsi_device.h>47#include <scsi/scsi_host.h>48#include <scsi/scsi.h>49#include "be_main.h"50#include "be_iscsi.h"51#include "be_mgmt.h"52#include "be_cmds.h"53 54static unsigned int be_iopoll_budget = 10;55static unsigned int be_max_phys_size = 64;56static unsigned int enable_msix = 1;57 58MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR);59MODULE_VERSION(BUILD_STR);60MODULE_AUTHOR("Emulex Corporation");61MODULE_LICENSE("GPL");62module_param(be_iopoll_budget, int, 0);63module_param(enable_msix, int, 0);64module_param(be_max_phys_size, uint, S_IRUGO);65MODULE_PARM_DESC(be_max_phys_size,66 "Maximum Size (In Kilobytes) of physically contiguous "67 "memory that can be allocated. Range is 16 - 128");68 69#define beiscsi_disp_param(_name)\70static ssize_t \71beiscsi_##_name##_disp(struct device *dev,\72 struct device_attribute *attrib, char *buf) \73{ \74 struct Scsi_Host *shost = class_to_shost(dev);\75 struct beiscsi_hba *phba = iscsi_host_priv(shost); \76 return snprintf(buf, PAGE_SIZE, "%d\n",\77 phba->attr_##_name);\78}79 80#define beiscsi_change_param(_name, _minval, _maxval, _defaval)\81static int \82beiscsi_##_name##_change(struct beiscsi_hba *phba, uint32_t val)\83{\84 if (val >= _minval && val <= _maxval) {\85 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\86 "BA_%d : beiscsi_"#_name" updated "\87 "from 0x%x ==> 0x%x\n",\88 phba->attr_##_name, val); \89 phba->attr_##_name = val;\90 return 0;\91 } \92 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, \93 "BA_%d beiscsi_"#_name" attribute "\94 "cannot be updated to 0x%x, "\95 "range allowed is ["#_minval" - "#_maxval"]\n", val);\96 return -EINVAL;\97}98 99#define beiscsi_store_param(_name) \100static ssize_t \101beiscsi_##_name##_store(struct device *dev,\102 struct device_attribute *attr, const char *buf,\103 size_t count) \104{ \105 struct Scsi_Host *shost = class_to_shost(dev);\106 struct beiscsi_hba *phba = iscsi_host_priv(shost);\107 uint32_t param_val = 0;\108 if (!isdigit(buf[0]))\109 return -EINVAL;\110 if (sscanf(buf, "%i", ¶m_val) != 1)\111 return -EINVAL;\112 if (beiscsi_##_name##_change(phba, param_val) == 0) \113 return strlen(buf);\114 else \115 return -EINVAL;\116}117 118#define beiscsi_init_param(_name, _minval, _maxval, _defval) \119static int \120beiscsi_##_name##_init(struct beiscsi_hba *phba, uint32_t val) \121{ \122 if (val >= _minval && val <= _maxval) {\123 phba->attr_##_name = val;\124 return 0;\125 } \126 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\127 "BA_%d beiscsi_"#_name" attribute " \128 "cannot be updated to 0x%x, "\129 "range allowed is ["#_minval" - "#_maxval"]\n", val);\130 phba->attr_##_name = _defval;\131 return -EINVAL;\132}133 134#define BEISCSI_RW_ATTR(_name, _minval, _maxval, _defval, _descp) \135static uint beiscsi_##_name = _defval;\136module_param(beiscsi_##_name, uint, S_IRUGO);\137MODULE_PARM_DESC(beiscsi_##_name, _descp);\138beiscsi_disp_param(_name)\139beiscsi_change_param(_name, _minval, _maxval, _defval)\140beiscsi_store_param(_name)\141beiscsi_init_param(_name, _minval, _maxval, _defval)\142static DEVICE_ATTR(beiscsi_##_name, S_IRUGO | S_IWUSR,\143 beiscsi_##_name##_disp, beiscsi_##_name##_store)144 145/*146 * When new log level added update MAX allowed value for log_enable147 */148BEISCSI_RW_ATTR(log_enable, 0x00,149 0xFF, 0x00, "Enable logging Bit Mask\n"150 "\t\t\t\tInitialization Events : 0x01\n"151 "\t\t\t\tMailbox Events : 0x02\n"152 "\t\t\t\tMiscellaneous Events : 0x04\n"153 "\t\t\t\tError Handling : 0x08\n"154 "\t\t\t\tIO Path Events : 0x10\n"155 "\t\t\t\tConfiguration Path : 0x20\n"156 "\t\t\t\tiSCSI Protocol : 0x40\n");157 158static DEVICE_ATTR(beiscsi_drvr_ver, S_IRUGO, beiscsi_drvr_ver_disp, NULL);159static DEVICE_ATTR(beiscsi_adapter_family, S_IRUGO, beiscsi_adap_family_disp, NULL);160static DEVICE_ATTR(beiscsi_fw_ver, S_IRUGO, beiscsi_fw_ver_disp, NULL);161static DEVICE_ATTR(beiscsi_phys_port, S_IRUGO, beiscsi_phys_port_disp, NULL);162static DEVICE_ATTR(beiscsi_active_session_count, S_IRUGO,163 beiscsi_active_session_disp, NULL);164static DEVICE_ATTR(beiscsi_free_session_count, S_IRUGO,165 beiscsi_free_session_disp, NULL);166 167static struct attribute *beiscsi_attrs[] = {168 &dev_attr_beiscsi_log_enable.attr,169 &dev_attr_beiscsi_drvr_ver.attr,170 &dev_attr_beiscsi_adapter_family.attr,171 &dev_attr_beiscsi_fw_ver.attr,172 &dev_attr_beiscsi_active_session_count.attr,173 &dev_attr_beiscsi_free_session_count.attr,174 &dev_attr_beiscsi_phys_port.attr,175 NULL,176};177 178ATTRIBUTE_GROUPS(beiscsi);179 180static char const *cqe_desc[] = {181 "RESERVED_DESC",182 "SOL_CMD_COMPLETE",183 "SOL_CMD_KILLED_DATA_DIGEST_ERR",184 "CXN_KILLED_PDU_SIZE_EXCEEDS_DSL",185 "CXN_KILLED_BURST_LEN_MISMATCH",186 "CXN_KILLED_AHS_RCVD",187 "CXN_KILLED_HDR_DIGEST_ERR",188 "CXN_KILLED_UNKNOWN_HDR",189 "CXN_KILLED_STALE_ITT_TTT_RCVD",190 "CXN_KILLED_INVALID_ITT_TTT_RCVD",191 "CXN_KILLED_RST_RCVD",192 "CXN_KILLED_TIMED_OUT",193 "CXN_KILLED_RST_SENT",194 "CXN_KILLED_FIN_RCVD",195 "CXN_KILLED_BAD_UNSOL_PDU_RCVD",196 "CXN_KILLED_BAD_WRB_INDEX_ERROR",197 "CXN_KILLED_OVER_RUN_RESIDUAL",198 "CXN_KILLED_UNDER_RUN_RESIDUAL",199 "CMD_KILLED_INVALID_STATSN_RCVD",200 "CMD_KILLED_INVALID_R2T_RCVD",201 "CMD_CXN_KILLED_LUN_INVALID",202 "CMD_CXN_KILLED_ICD_INVALID",203 "CMD_CXN_KILLED_ITT_INVALID",204 "CMD_CXN_KILLED_SEQ_OUTOFORDER",205 "CMD_CXN_KILLED_INVALID_DATASN_RCVD",206 "CXN_INVALIDATE_NOTIFY",207 "CXN_INVALIDATE_INDEX_NOTIFY",208 "CMD_INVALIDATED_NOTIFY",209 "UNSOL_HDR_NOTIFY",210 "UNSOL_DATA_NOTIFY",211 "UNSOL_DATA_DIGEST_ERROR_NOTIFY",212 "DRIVERMSG_NOTIFY",213 "CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN",214 "SOL_CMD_KILLED_DIF_ERR",215 "CXN_KILLED_SYN_RCVD",216 "CXN_KILLED_IMM_DATA_RCVD"217};218 219static int beiscsi_eh_abort(struct scsi_cmnd *sc)220{221 struct iscsi_task *abrt_task = iscsi_cmd(sc)->task;222 struct iscsi_cls_session *cls_session;223 struct beiscsi_io_task *abrt_io_task;224 struct beiscsi_conn *beiscsi_conn;225 struct iscsi_session *session;226 struct invldt_cmd_tbl inv_tbl;227 struct beiscsi_hba *phba;228 struct iscsi_conn *conn;229 int rc;230 231 cls_session = starget_to_session(scsi_target(sc->device));232 session = cls_session->dd_data;233 234completion_check:235 /* check if we raced, task just got cleaned up under us */236 spin_lock_bh(&session->back_lock);237 if (!abrt_task || !abrt_task->sc) {238 spin_unlock_bh(&session->back_lock);239 return SUCCESS;240 }241 /* get a task ref till FW processes the req for the ICD used */242 if (!iscsi_get_task(abrt_task)) {243 spin_unlock(&session->back_lock);244 /* We are just about to call iscsi_free_task so wait for it. */245 udelay(5);246 goto completion_check;247 }248 249 abrt_io_task = abrt_task->dd_data;250 conn = abrt_task->conn;251 beiscsi_conn = conn->dd_data;252 phba = beiscsi_conn->phba;253 /* mark WRB invalid which have been not processed by FW yet */254 if (is_chip_be2_be3r(phba)) {255 AMAP_SET_BITS(struct amap_iscsi_wrb, invld,256 abrt_io_task->pwrb_handle->pwrb, 1);257 } else {258 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, invld,259 abrt_io_task->pwrb_handle->pwrb, 1);260 }261 inv_tbl.cid = beiscsi_conn->beiscsi_conn_cid;262 inv_tbl.icd = abrt_io_task->psgl_handle->sgl_index;263 spin_unlock_bh(&session->back_lock);264 265 rc = beiscsi_mgmt_invalidate_icds(phba, &inv_tbl, 1);266 iscsi_put_task(abrt_task);267 if (rc) {268 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,269 "BM_%d : sc %p invalidation failed %d\n",270 sc, rc);271 return FAILED;272 }273 274 return iscsi_eh_abort(sc);275}276 277static int beiscsi_eh_device_reset(struct scsi_cmnd *sc)278{279 struct beiscsi_invldt_cmd_tbl {280 struct invldt_cmd_tbl tbl[BE_INVLDT_CMD_TBL_SZ];281 struct iscsi_task *task[BE_INVLDT_CMD_TBL_SZ];282 } *inv_tbl;283 struct iscsi_cls_session *cls_session;284 struct beiscsi_conn *beiscsi_conn;285 struct beiscsi_io_task *io_task;286 struct iscsi_session *session;287 struct beiscsi_hba *phba;288 struct iscsi_conn *conn;289 struct iscsi_task *task;290 unsigned int i, nents;291 int rc, more = 0;292 293 cls_session = starget_to_session(scsi_target(sc->device));294 session = cls_session->dd_data;295 296 spin_lock_bh(&session->frwd_lock);297 if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN) {298 spin_unlock_bh(&session->frwd_lock);299 return FAILED;300 }301 302 conn = session->leadconn;303 beiscsi_conn = conn->dd_data;304 phba = beiscsi_conn->phba;305 306 inv_tbl = kzalloc(sizeof(*inv_tbl), GFP_ATOMIC);307 if (!inv_tbl) {308 spin_unlock_bh(&session->frwd_lock);309 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,310 "BM_%d : invldt_cmd_tbl alloc failed\n");311 return FAILED;312 }313 nents = 0;314 /* take back_lock to prevent task from getting cleaned up under us */315 spin_lock(&session->back_lock);316 for (i = 0; i < conn->session->cmds_max; i++) {317 task = conn->session->cmds[i];318 if (!task->sc)319 continue;320 321 if (sc->device->lun != task->sc->device->lun)322 continue;323 /**324 * Can't fit in more cmds? Normally this won't happen b'coz325 * BEISCSI_CMD_PER_LUN is same as BE_INVLDT_CMD_TBL_SZ.326 */327 if (nents == BE_INVLDT_CMD_TBL_SZ) {328 more = 1;329 break;330 }331 332 /* get a task ref till FW processes the req for the ICD used */333 if (!iscsi_get_task(task)) {334 /*335 * The task has completed in the driver and is336 * completing in libiscsi. Just ignore it here. When we337 * call iscsi_eh_device_reset, it will wait for us.338 */339 continue;340 }341 342 io_task = task->dd_data;343 /* mark WRB invalid which have been not processed by FW yet */344 if (is_chip_be2_be3r(phba)) {345 AMAP_SET_BITS(struct amap_iscsi_wrb, invld,346 io_task->pwrb_handle->pwrb, 1);347 } else {348 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, invld,349 io_task->pwrb_handle->pwrb, 1);350 }351 352 inv_tbl->tbl[nents].cid = beiscsi_conn->beiscsi_conn_cid;353 inv_tbl->tbl[nents].icd = io_task->psgl_handle->sgl_index;354 inv_tbl->task[nents] = task;355 nents++;356 }357 spin_unlock(&session->back_lock);358 spin_unlock_bh(&session->frwd_lock);359 360 rc = SUCCESS;361 if (!nents)362 goto end_reset;363 364 if (more) {365 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,366 "BM_%d : number of cmds exceeds size of invalidation table\n");367 rc = FAILED;368 goto end_reset;369 }370 371 if (beiscsi_mgmt_invalidate_icds(phba, &inv_tbl->tbl[0], nents)) {372 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,373 "BM_%d : cid %u scmds invalidation failed\n",374 beiscsi_conn->beiscsi_conn_cid);375 rc = FAILED;376 }377 378end_reset:379 for (i = 0; i < nents; i++)380 iscsi_put_task(inv_tbl->task[i]);381 kfree(inv_tbl);382 383 if (rc == SUCCESS)384 rc = iscsi_eh_device_reset(sc);385 return rc;386}387 388/*------------------- PCI Driver operations and data ----------------- */389static const struct pci_device_id beiscsi_pci_id_table[] = {390 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },391 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },392 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },393 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },394 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },395 { PCI_DEVICE(ELX_VENDOR_ID, OC_SKH_ID1) },396 { 0 }397};398MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);399 400 401static const struct scsi_host_template beiscsi_sht = {402 .module = THIS_MODULE,403 .name = "Emulex 10Gbe open-iscsi Initiator Driver",404 .proc_name = DRV_NAME,405 .queuecommand = iscsi_queuecommand,406 .change_queue_depth = scsi_change_queue_depth,407 .target_alloc = iscsi_target_alloc,408 .eh_timed_out = iscsi_eh_cmd_timed_out,409 .eh_abort_handler = beiscsi_eh_abort,410 .eh_device_reset_handler = beiscsi_eh_device_reset,411 .eh_target_reset_handler = iscsi_eh_session_reset,412 .shost_groups = beiscsi_groups,413 .sg_tablesize = BEISCSI_SGLIST_ELEMENTS,414 .can_queue = BE2_IO_DEPTH,415 .this_id = -1,416 .max_sectors = BEISCSI_MAX_SECTORS,417 .max_segment_size = 65536,418 .cmd_per_lun = BEISCSI_CMD_PER_LUN,419 .vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID,420 .track_queue_depth = 1,421 .cmd_size = sizeof(struct iscsi_cmd),422};423 424static struct scsi_transport_template *beiscsi_scsi_transport;425 426static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev)427{428 struct beiscsi_hba *phba;429 struct Scsi_Host *shost;430 431 shost = iscsi_host_alloc(&beiscsi_sht, sizeof(*phba), 0);432 if (!shost) {433 dev_err(&pcidev->dev,434 "beiscsi_hba_alloc - iscsi_host_alloc failed\n");435 return NULL;436 }437 shost->max_id = BE2_MAX_SESSIONS - 1;438 shost->max_channel = 0;439 shost->max_cmd_len = BEISCSI_MAX_CMD_LEN;440 shost->max_lun = BEISCSI_NUM_MAX_LUN;441 shost->transportt = beiscsi_scsi_transport;442 phba = iscsi_host_priv(shost);443 memset(phba, 0, sizeof(*phba));444 phba->shost = shost;445 phba->pcidev = pci_dev_get(pcidev);446 pci_set_drvdata(pcidev, phba);447 phba->interface_handle = 0xFFFFFFFF;448 449 return phba;450}451 452static void beiscsi_unmap_pci_function(struct beiscsi_hba *phba)453{454 if (phba->csr_va) {455 iounmap(phba->csr_va);456 phba->csr_va = NULL;457 }458 if (phba->db_va) {459 iounmap(phba->db_va);460 phba->db_va = NULL;461 }462 if (phba->pci_va) {463 iounmap(phba->pci_va);464 phba->pci_va = NULL;465 }466}467 468static int beiscsi_map_pci_bars(struct beiscsi_hba *phba,469 struct pci_dev *pcidev)470{471 u8 __iomem *addr;472 int pcicfg_reg;473 474 addr = ioremap(pci_resource_start(pcidev, 2),475 pci_resource_len(pcidev, 2));476 if (addr == NULL)477 return -ENOMEM;478 phba->ctrl.csr = addr;479 phba->csr_va = addr;480 481 addr = ioremap(pci_resource_start(pcidev, 4), 128 * 1024);482 if (addr == NULL)483 goto pci_map_err;484 phba->ctrl.db = addr;485 phba->db_va = addr;486 487 if (phba->generation == BE_GEN2)488 pcicfg_reg = 1;489 else490 pcicfg_reg = 0;491 492 addr = ioremap(pci_resource_start(pcidev, pcicfg_reg),493 pci_resource_len(pcidev, pcicfg_reg));494 495 if (addr == NULL)496 goto pci_map_err;497 phba->ctrl.pcicfg = addr;498 phba->pci_va = addr;499 return 0;500 501pci_map_err:502 beiscsi_unmap_pci_function(phba);503 return -ENOMEM;504}505 506static int beiscsi_enable_pci(struct pci_dev *pcidev)507{508 int ret;509 510 ret = pci_enable_device(pcidev);511 if (ret) {512 dev_err(&pcidev->dev,513 "beiscsi_enable_pci - enable device failed\n");514 return ret;515 }516 517 ret = pci_request_regions(pcidev, DRV_NAME);518 if (ret) {519 dev_err(&pcidev->dev,520 "beiscsi_enable_pci - request region failed\n");521 goto pci_dev_disable;522 }523 524 pci_set_master(pcidev);525 ret = dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(64));526 if (ret) {527 ret = dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(32));528 if (ret) {529 dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");530 goto pci_region_release;531 }532 }533 return 0;534 535pci_region_release:536 pci_release_regions(pcidev);537pci_dev_disable:538 pci_disable_device(pcidev);539 540 return ret;541}542 543static int be_ctrl_init(struct beiscsi_hba *phba, struct pci_dev *pdev)544{545 struct be_ctrl_info *ctrl = &phba->ctrl;546 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;547 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;548 int status = 0;549 550 ctrl->pdev = pdev;551 status = beiscsi_map_pci_bars(phba, pdev);552 if (status)553 return status;554 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;555 mbox_mem_alloc->va = dma_alloc_coherent(&pdev->dev,556 mbox_mem_alloc->size, &mbox_mem_alloc->dma, GFP_KERNEL);557 if (!mbox_mem_alloc->va) {558 beiscsi_unmap_pci_function(phba);559 return -ENOMEM;560 }561 562 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);563 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);564 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);565 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));566 mutex_init(&ctrl->mbox_lock);567 spin_lock_init(&phba->ctrl.mcc_lock);568 569 return status;570}571 572/**573 * beiscsi_get_params()- Set the config paramters574 * @phba: ptr device priv structure575 **/576static void beiscsi_get_params(struct beiscsi_hba *phba)577{578 uint32_t total_cid_count = 0;579 uint32_t total_icd_count = 0;580 uint8_t ulp_num = 0;581 582 total_cid_count = BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP0) +583 BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP1);584 585 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {586 uint32_t align_mask = 0;587 uint32_t icd_post_per_page = 0;588 uint32_t icd_count_unavailable = 0;589 uint32_t icd_start = 0, icd_count = 0;590 uint32_t icd_start_align = 0, icd_count_align = 0;591 592 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {593 icd_start = phba->fw_config.iscsi_icd_start[ulp_num];594 icd_count = phba->fw_config.iscsi_icd_count[ulp_num];595 596 /* Get ICD count that can be posted on each page */597 icd_post_per_page = (PAGE_SIZE / (BE2_SGE *598 sizeof(struct iscsi_sge)));599 align_mask = (icd_post_per_page - 1);600 601 /* Check if icd_start is aligned ICD per page posting */602 if (icd_start % icd_post_per_page) {603 icd_start_align = ((icd_start +604 icd_post_per_page) &605 ~(align_mask));606 phba->fw_config.607 iscsi_icd_start[ulp_num] =608 icd_start_align;609 }610 611 icd_count_align = (icd_count & ~align_mask);612 613 /* ICD discarded in the process of alignment */614 if (icd_start_align)615 icd_count_unavailable = ((icd_start_align -616 icd_start) +617 (icd_count -618 icd_count_align));619 620 /* Updated ICD count available */621 phba->fw_config.iscsi_icd_count[ulp_num] = (icd_count -622 icd_count_unavailable);623 624 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,625 "BM_%d : Aligned ICD values\n"626 "\t ICD Start : %d\n"627 "\t ICD Count : %d\n"628 "\t ICD Discarded : %d\n",629 phba->fw_config.630 iscsi_icd_start[ulp_num],631 phba->fw_config.632 iscsi_icd_count[ulp_num],633 icd_count_unavailable);634 break;635 }636 }637 638 total_icd_count = phba->fw_config.iscsi_icd_count[ulp_num];639 phba->params.ios_per_ctrl = (total_icd_count -640 (total_cid_count +641 BE2_TMFS + BE2_NOPOUT_REQ));642 phba->params.cxns_per_ctrl = total_cid_count;643 phba->params.icds_per_ctrl = total_icd_count;644 phba->params.num_sge_per_io = BE2_SGE;645 phba->params.defpdu_hdr_sz = BE2_DEFPDU_HDR_SZ;646 phba->params.defpdu_data_sz = BE2_DEFPDU_DATA_SZ;647 phba->params.num_eq_entries = 1024;648 phba->params.num_cq_entries = 1024;649 phba->params.wrbs_per_cxn = 256;650}651 652static void hwi_ring_eq_db(struct beiscsi_hba *phba,653 unsigned int id, unsigned int clr_interrupt,654 unsigned int num_processed,655 unsigned char rearm, unsigned char event)656{657 u32 val = 0;658 659 if (rearm)660 val |= 1 << DB_EQ_REARM_SHIFT;661 if (clr_interrupt)662 val |= 1 << DB_EQ_CLR_SHIFT;663 if (event)664 val |= 1 << DB_EQ_EVNT_SHIFT;665 666 val |= num_processed << DB_EQ_NUM_POPPED_SHIFT;667 /* Setting lower order EQ_ID Bits */668 val |= (id & DB_EQ_RING_ID_LOW_MASK);669 670 /* Setting Higher order EQ_ID Bits */671 val |= (((id >> DB_EQ_HIGH_FEILD_SHIFT) &672 DB_EQ_RING_ID_HIGH_MASK)673 << DB_EQ_HIGH_SET_SHIFT);674 675 iowrite32(val, phba->db_va + DB_EQ_OFFSET);676}677 678/**679 * be_isr_mcc - The isr routine of the driver.680 * @irq: Not used681 * @dev_id: Pointer to host adapter structure682 */683static irqreturn_t be_isr_mcc(int irq, void *dev_id)684{685 struct beiscsi_hba *phba;686 struct be_eq_entry *eqe;687 struct be_queue_info *eq;688 struct be_queue_info *mcc;689 unsigned int mcc_events;690 struct be_eq_obj *pbe_eq;691 692 pbe_eq = dev_id;693 eq = &pbe_eq->q;694 phba = pbe_eq->phba;695 mcc = &phba->ctrl.mcc_obj.cq;696 eqe = queue_tail_node(eq);697 698 mcc_events = 0;699 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]700 & EQE_VALID_MASK) {701 if (((eqe->dw[offsetof(struct amap_eq_entry,702 resource_id) / 32] &703 EQE_RESID_MASK) >> 16) == mcc->id) {704 mcc_events++;705 }706 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);707 queue_tail_inc(eq);708 eqe = queue_tail_node(eq);709 }710 711 if (mcc_events) {712 queue_work(phba->wq, &pbe_eq->mcc_work);713 hwi_ring_eq_db(phba, eq->id, 1, mcc_events, 1, 1);714 }715 return IRQ_HANDLED;716}717 718/**719 * be_isr_msix - The isr routine of the driver.720 * @irq: Not used721 * @dev_id: Pointer to host adapter structure722 */723static irqreturn_t be_isr_msix(int irq, void *dev_id)724{725 struct beiscsi_hba *phba;726 struct be_queue_info *eq;727 struct be_eq_obj *pbe_eq;728 729 pbe_eq = dev_id;730 eq = &pbe_eq->q;731 732 phba = pbe_eq->phba;733 /* disable interrupt till iopoll completes */734 hwi_ring_eq_db(phba, eq->id, 1, 0, 0, 1);735 irq_poll_sched(&pbe_eq->iopoll);736 737 return IRQ_HANDLED;738}739 740/**741 * be_isr - The isr routine of the driver.742 * @irq: Not used743 * @dev_id: Pointer to host adapter structure744 */745static irqreturn_t be_isr(int irq, void *dev_id)746{747 struct beiscsi_hba *phba;748 struct hwi_controller *phwi_ctrlr;749 struct hwi_context_memory *phwi_context;750 struct be_eq_entry *eqe;751 struct be_queue_info *eq;752 struct be_queue_info *mcc;753 unsigned int mcc_events, io_events;754 struct be_ctrl_info *ctrl;755 struct be_eq_obj *pbe_eq;756 int isr, rearm;757 758 phba = dev_id;759 ctrl = &phba->ctrl;760 isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET +761 (PCI_FUNC(ctrl->pdev->devfn) * CEV_ISR_SIZE));762 if (!isr)763 return IRQ_NONE;764 765 phwi_ctrlr = phba->phwi_ctrlr;766 phwi_context = phwi_ctrlr->phwi_ctxt;767 pbe_eq = &phwi_context->be_eq[0];768 769 eq = &phwi_context->be_eq[0].q;770 mcc = &phba->ctrl.mcc_obj.cq;771 eqe = queue_tail_node(eq);772 773 io_events = 0;774 mcc_events = 0;775 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]776 & EQE_VALID_MASK) {777 if (((eqe->dw[offsetof(struct amap_eq_entry,778 resource_id) / 32] & EQE_RESID_MASK) >> 16) == mcc->id)779 mcc_events++;780 else781 io_events++;782 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);783 queue_tail_inc(eq);784 eqe = queue_tail_node(eq);785 }786 if (!io_events && !mcc_events)787 return IRQ_NONE;788 789 /* no need to rearm if interrupt is only for IOs */790 rearm = 0;791 if (mcc_events) {792 queue_work(phba->wq, &pbe_eq->mcc_work);793 /* rearm for MCCQ */794 rearm = 1;795 }796 if (io_events)797 irq_poll_sched(&pbe_eq->iopoll);798 hwi_ring_eq_db(phba, eq->id, 0, (io_events + mcc_events), rearm, 1);799 return IRQ_HANDLED;800}801 802static void beiscsi_free_irqs(struct beiscsi_hba *phba)803{804 struct hwi_context_memory *phwi_context;805 int i;806 807 if (!phba->pcidev->msix_enabled) {808 if (phba->pcidev->irq)809 free_irq(phba->pcidev->irq, phba);810 return;811 }812 813 phwi_context = phba->phwi_ctrlr->phwi_ctxt;814 for (i = 0; i <= phba->num_cpus; i++) {815 free_irq(pci_irq_vector(phba->pcidev, i),816 &phwi_context->be_eq[i]);817 kfree(phba->msi_name[i]);818 }819}820 821static int beiscsi_init_irqs(struct beiscsi_hba *phba)822{823 struct pci_dev *pcidev = phba->pcidev;824 struct hwi_controller *phwi_ctrlr;825 struct hwi_context_memory *phwi_context;826 int ret, i, j;827 828 phwi_ctrlr = phba->phwi_ctrlr;829 phwi_context = phwi_ctrlr->phwi_ctxt;830 831 if (pcidev->msix_enabled) {832 for (i = 0; i < phba->num_cpus; i++) {833 phba->msi_name[i] = kasprintf(GFP_KERNEL,834 "beiscsi_%02x_%02x",835 phba->shost->host_no, i);836 if (!phba->msi_name[i]) {837 ret = -ENOMEM;838 goto free_msix_irqs;839 }840 841 ret = request_irq(pci_irq_vector(pcidev, i),842 be_isr_msix, 0, phba->msi_name[i],843 &phwi_context->be_eq[i]);844 if (ret) {845 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,846 "BM_%d : %s-Failed to register msix for i = %d\n",847 __func__, i);848 kfree(phba->msi_name[i]);849 goto free_msix_irqs;850 }851 }852 phba->msi_name[i] = kasprintf(GFP_KERNEL, "beiscsi_mcc_%02x",853 phba->shost->host_no);854 if (!phba->msi_name[i]) {855 ret = -ENOMEM;856 goto free_msix_irqs;857 }858 ret = request_irq(pci_irq_vector(pcidev, i), be_isr_mcc, 0,859 phba->msi_name[i], &phwi_context->be_eq[i]);860 if (ret) {861 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,862 "BM_%d : %s-Failed to register beiscsi_msix_mcc\n",863 __func__);864 kfree(phba->msi_name[i]);865 goto free_msix_irqs;866 }867 868 } else {869 ret = request_irq(pcidev->irq, be_isr, IRQF_SHARED,870 "beiscsi", phba);871 if (ret) {872 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,873 "BM_%d : %s-Failed to register irq\n",874 __func__);875 return ret;876 }877 }878 return 0;879free_msix_irqs:880 for (j = i - 1; j >= 0; j--) {881 free_irq(pci_irq_vector(pcidev, i), &phwi_context->be_eq[j]);882 kfree(phba->msi_name[j]);883 }884 return ret;885}886 887void hwi_ring_cq_db(struct beiscsi_hba *phba,888 unsigned int id, unsigned int num_processed,889 unsigned char rearm)890{891 u32 val = 0;892 893 if (rearm)894 val |= 1 << DB_CQ_REARM_SHIFT;895 896 val |= num_processed << DB_CQ_NUM_POPPED_SHIFT;897 898 /* Setting lower order CQ_ID Bits */899 val |= (id & DB_CQ_RING_ID_LOW_MASK);900 901 /* Setting Higher order CQ_ID Bits */902 val |= (((id >> DB_CQ_HIGH_FEILD_SHIFT) &903 DB_CQ_RING_ID_HIGH_MASK)904 << DB_CQ_HIGH_SET_SHIFT);905 906 iowrite32(val, phba->db_va + DB_CQ_OFFSET);907}908 909static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba)910{911 struct sgl_handle *psgl_handle;912 unsigned long flags;913 914 spin_lock_irqsave(&phba->io_sgl_lock, flags);915 if (phba->io_sgl_hndl_avbl) {916 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,917 "BM_%d : In alloc_io_sgl_handle,"918 " io_sgl_alloc_index=%d\n",919 phba->io_sgl_alloc_index);920 921 psgl_handle = phba->io_sgl_hndl_base[phba->922 io_sgl_alloc_index];923 phba->io_sgl_hndl_base[phba->io_sgl_alloc_index] = NULL;924 phba->io_sgl_hndl_avbl--;925 if (phba->io_sgl_alloc_index == (phba->params.926 ios_per_ctrl - 1))927 phba->io_sgl_alloc_index = 0;928 else929 phba->io_sgl_alloc_index++;930 } else931 psgl_handle = NULL;932 spin_unlock_irqrestore(&phba->io_sgl_lock, flags);933 return psgl_handle;934}935 936static void937free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)938{939 unsigned long flags;940 941 spin_lock_irqsave(&phba->io_sgl_lock, flags);942 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,943 "BM_%d : In free_,io_sgl_free_index=%d\n",944 phba->io_sgl_free_index);945 946 if (phba->io_sgl_hndl_base[phba->io_sgl_free_index]) {947 /*948 * this can happen if clean_task is called on a task that949 * failed in xmit_task or alloc_pdu.950 */951 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,952 "BM_%d : Double Free in IO SGL io_sgl_free_index=%d, value there=%p\n",953 phba->io_sgl_free_index,954 phba->io_sgl_hndl_base[phba->io_sgl_free_index]);955 spin_unlock_irqrestore(&phba->io_sgl_lock, flags);956 return;957 }958 phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle;959 phba->io_sgl_hndl_avbl++;960 if (phba->io_sgl_free_index == (phba->params.ios_per_ctrl - 1))961 phba->io_sgl_free_index = 0;962 else963 phba->io_sgl_free_index++;964 spin_unlock_irqrestore(&phba->io_sgl_lock, flags);965}966 967static inline struct wrb_handle *968beiscsi_get_wrb_handle(struct hwi_wrb_context *pwrb_context,969 unsigned int wrbs_per_cxn)970{971 struct wrb_handle *pwrb_handle;972 unsigned long flags;973 974 spin_lock_irqsave(&pwrb_context->wrb_lock, flags);975 if (!pwrb_context->wrb_handles_available) {976 spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);977 return NULL;978 }979 pwrb_handle = pwrb_context->pwrb_handle_base[pwrb_context->alloc_index];980 pwrb_context->wrb_handles_available--;981 if (pwrb_context->alloc_index == (wrbs_per_cxn - 1))982 pwrb_context->alloc_index = 0;983 else984 pwrb_context->alloc_index++;985 spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);986 987 if (pwrb_handle)988 memset(pwrb_handle->pwrb, 0, sizeof(*pwrb_handle->pwrb));989 990 return pwrb_handle;991}992 993/**994 * alloc_wrb_handle - To allocate a wrb handle995 * @phba: The hba pointer996 * @cid: The cid to use for allocation997 * @pcontext: ptr to ptr to wrb context998 *999 * This happens under session_lock until submission to chip1000 */1001struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,1002 struct hwi_wrb_context **pcontext)1003{1004 struct hwi_wrb_context *pwrb_context;1005 struct hwi_controller *phwi_ctrlr;1006 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);1007 1008 phwi_ctrlr = phba->phwi_ctrlr;1009 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];1010 /* return the context address */1011 *pcontext = pwrb_context;1012 return beiscsi_get_wrb_handle(pwrb_context, phba->params.wrbs_per_cxn);1013}1014 1015static inline void1016beiscsi_put_wrb_handle(struct hwi_wrb_context *pwrb_context,1017 struct wrb_handle *pwrb_handle,1018 unsigned int wrbs_per_cxn)1019{1020 unsigned long flags;1021 1022 spin_lock_irqsave(&pwrb_context->wrb_lock, flags);1023 pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle;1024 pwrb_context->wrb_handles_available++;1025 if (pwrb_context->free_index == (wrbs_per_cxn - 1))1026 pwrb_context->free_index = 0;1027 else1028 pwrb_context->free_index++;1029 pwrb_handle->pio_handle = NULL;1030 spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);1031}1032 1033/**1034 * free_wrb_handle - To free the wrb handle back to pool1035 * @phba: The hba pointer1036 * @pwrb_context: The context to free from1037 * @pwrb_handle: The wrb_handle to free1038 *1039 * This happens under session_lock until submission to chip1040 */1041static void1042free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context,1043 struct wrb_handle *pwrb_handle)1044{1045 beiscsi_put_wrb_handle(pwrb_context,1046 pwrb_handle,1047 phba->params.wrbs_per_cxn);1048 beiscsi_log(phba, KERN_INFO,1049 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,1050 "BM_%d : FREE WRB: pwrb_handle=%p free_index=0x%x "1051 "wrb_handles_available=%d\n",1052 pwrb_handle, pwrb_context->free_index,1053 pwrb_context->wrb_handles_available);1054}1055 1056static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba)1057{1058 struct sgl_handle *psgl_handle;1059 unsigned long flags;1060 1061 spin_lock_irqsave(&phba->mgmt_sgl_lock, flags);1062 if (phba->eh_sgl_hndl_avbl) {1063 psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index];1064 phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL;1065 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,1066 "BM_%d : mgmt_sgl_alloc_index=%d=0x%x\n",1067 phba->eh_sgl_alloc_index,1068 phba->eh_sgl_alloc_index);1069 1070 phba->eh_sgl_hndl_avbl--;1071 if (phba->eh_sgl_alloc_index ==1072 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl -1073 1))1074 phba->eh_sgl_alloc_index = 0;1075 else1076 phba->eh_sgl_alloc_index++;1077 } else1078 psgl_handle = NULL;1079 spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);1080 return psgl_handle;1081}1082 1083void1084free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)1085{1086 unsigned long flags;1087 1088 spin_lock_irqsave(&phba->mgmt_sgl_lock, flags);1089 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,1090 "BM_%d : In free_mgmt_sgl_handle,"1091 "eh_sgl_free_index=%d\n",1092 phba->eh_sgl_free_index);1093 1094 if (phba->eh_sgl_hndl_base[phba->eh_sgl_free_index]) {1095 /*1096 * this can happen if clean_task is called on a task that1097 * failed in xmit_task or alloc_pdu.1098 */1099 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,1100 "BM_%d : Double Free in eh SGL ,"1101 "eh_sgl_free_index=%d\n",1102 phba->eh_sgl_free_index);1103 spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);1104 return;1105 }1106 phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle;1107 phba->eh_sgl_hndl_avbl++;1108 if (phba->eh_sgl_free_index ==1109 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - 1))1110 phba->eh_sgl_free_index = 0;1111 else1112 phba->eh_sgl_free_index++;1113 spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);1114}1115 1116static void1117be_complete_io(struct beiscsi_conn *beiscsi_conn,1118 struct iscsi_task *task,1119 struct common_sol_cqe *csol_cqe)1120{1121 struct beiscsi_io_task *io_task = task->dd_data;1122 struct be_status_bhs *sts_bhs =1123 (struct be_status_bhs *)io_task->cmd_bhs;1124 struct iscsi_conn *conn = beiscsi_conn->conn;1125 unsigned char *sense;1126 u32 resid = 0, exp_cmdsn, max_cmdsn;1127 u8 rsp, status, flags;1128 1129 exp_cmdsn = csol_cqe->exp_cmdsn;1130 max_cmdsn = (csol_cqe->exp_cmdsn +1131 csol_cqe->cmd_wnd - 1);1132 rsp = csol_cqe->i_resp;1133 status = csol_cqe->i_sts;1134 flags = csol_cqe->i_flags;1135 resid = csol_cqe->res_cnt;1136 1137 if (!task->sc) {1138 if (io_task->scsi_cmnd) {1139 scsi_dma_unmap(io_task->scsi_cmnd);1140 io_task->scsi_cmnd = NULL;1141 }1142 1143 return;1144 }1145 task->sc->result = (DID_OK << 16) | status;1146 if (rsp != ISCSI_STATUS_CMD_COMPLETED) {1147 task->sc->result = DID_ERROR << 16;1148 goto unmap;1149 }1150 1151 /* bidi not initially supported */1152 if (flags & (ISCSI_FLAG_CMD_UNDERFLOW | ISCSI_FLAG_CMD_OVERFLOW)) {1153 if (!status && (flags & ISCSI_FLAG_CMD_OVERFLOW))1154 task->sc->result = DID_ERROR << 16;1155 1156 if (flags & ISCSI_FLAG_CMD_UNDERFLOW) {1157 scsi_set_resid(task->sc, resid);1158 if (!status && (scsi_bufflen(task->sc) - resid <1159 task->sc->underflow))1160 task->sc->result = DID_ERROR << 16;1161 }1162 }1163 1164 if (status == SAM_STAT_CHECK_CONDITION) {1165 u16 sense_len;1166 unsigned short *slen = (unsigned short *)sts_bhs->sense_info;1167 1168 sense = sts_bhs->sense_info + sizeof(unsigned short);1169 sense_len = be16_to_cpu(*slen);1170 memcpy(task->sc->sense_buffer, sense,1171 min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE));1172 }1173 1174 if (io_task->cmd_bhs->iscsi_hdr.flags & ISCSI_FLAG_CMD_READ)1175 conn->rxdata_octets += resid;1176unmap:1177 if (io_task->scsi_cmnd) {1178 scsi_dma_unmap(io_task->scsi_cmnd);1179 io_task->scsi_cmnd = NULL;1180 }1181 iscsi_complete_scsi_task(task, exp_cmdsn, max_cmdsn);1182}1183 1184static void1185be_complete_logout(struct beiscsi_conn *beiscsi_conn,1186 struct iscsi_task *task,1187 struct common_sol_cqe *csol_cqe)1188{1189 struct iscsi_logout_rsp *hdr;1190 struct beiscsi_io_task *io_task = task->dd_data;1191 struct iscsi_conn *conn = beiscsi_conn->conn;1192 1193 hdr = (struct iscsi_logout_rsp *)task->hdr;1194 hdr->opcode = ISCSI_OP_LOGOUT_RSP;1195 hdr->t2wait = 5;1196 hdr->t2retain = 0;1197 hdr->flags = csol_cqe->i_flags;1198 hdr->response = csol_cqe->i_resp;1199 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);1200 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +1201 csol_cqe->cmd_wnd - 1);1202 1203 hdr->dlength[0] = 0;1204 hdr->dlength[1] = 0;1205 hdr->dlength[2] = 0;1206 hdr->hlength = 0;1207 hdr->itt = io_task->libiscsi_itt;1208 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);1209}1210 1211static void1212be_complete_tmf(struct beiscsi_conn *beiscsi_conn,1213 struct iscsi_task *task,1214 struct common_sol_cqe *csol_cqe)1215{1216 struct iscsi_tm_rsp *hdr;1217 struct iscsi_conn *conn = beiscsi_conn->conn;1218 struct beiscsi_io_task *io_task = task->dd_data;1219 1220 hdr = (struct iscsi_tm_rsp *)task->hdr;1221 hdr->opcode = ISCSI_OP_SCSI_TMFUNC_RSP;1222 hdr->flags = csol_cqe->i_flags;1223 hdr->response = csol_cqe->i_resp;1224 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);1225 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +1226 csol_cqe->cmd_wnd - 1);1227 1228 hdr->itt = io_task->libiscsi_itt;1229 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);1230}1231 1232static void1233hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,1234 struct beiscsi_hba *phba, struct sol_cqe *psol)1235{1236 struct hwi_wrb_context *pwrb_context;1237 uint16_t wrb_index, cid, cri_index;1238 struct hwi_controller *phwi_ctrlr;1239 struct wrb_handle *pwrb_handle;1240 struct iscsi_session *session;1241 struct iscsi_task *task;1242 1243 phwi_ctrlr = phba->phwi_ctrlr;1244 if (is_chip_be2_be3r(phba)) {1245 wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe,1246 wrb_idx, psol);1247 cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe,1248 cid, psol);1249 } else {1250 wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,1251 wrb_idx, psol);1252 cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,1253 cid, psol);1254 }1255 1256 cri_index = BE_GET_CRI_FROM_CID(cid);1257 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];1258 pwrb_handle = pwrb_context->pwrb_handle_basestd[wrb_index];1259 session = beiscsi_conn->conn->session;1260 spin_lock_bh(&session->back_lock);1261 task = pwrb_handle->pio_handle;1262 if (task)1263 __iscsi_put_task(task);1264 spin_unlock_bh(&session->back_lock);1265}1266 1267static void1268be_complete_nopin_resp(struct beiscsi_conn *beiscsi_conn,1269 struct iscsi_task *task,1270 struct common_sol_cqe *csol_cqe)1271{1272 struct iscsi_nopin *hdr;1273 struct iscsi_conn *conn = beiscsi_conn->conn;1274 struct beiscsi_io_task *io_task = task->dd_data;1275 1276 hdr = (struct iscsi_nopin *)task->hdr;1277 hdr->flags = csol_cqe->i_flags;1278 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);1279 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +1280 csol_cqe->cmd_wnd - 1);1281 1282 hdr->opcode = ISCSI_OP_NOOP_IN;1283 hdr->itt = io_task->libiscsi_itt;1284 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);1285}1286 1287static void adapter_get_sol_cqe(struct beiscsi_hba *phba,1288 struct sol_cqe *psol,1289 struct common_sol_cqe *csol_cqe)1290{1291 if (is_chip_be2_be3r(phba)) {1292 csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe,1293 i_exp_cmd_sn, psol);1294 csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe,1295 i_res_cnt, psol);1296 csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe,1297 i_cmd_wnd, psol);1298 csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe,1299 wrb_index, psol);1300 csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe,1301 cid, psol);1302 csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe,1303 hw_sts, psol);1304 csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe,1305 i_resp, psol);1306 csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe,1307 i_sts, psol);1308 csol_cqe->i_flags = AMAP_GET_BITS(struct amap_sol_cqe,1309 i_flags, psol);1310 } else {1311 csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe_v2,1312 i_exp_cmd_sn, psol);1313 csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe_v2,1314 i_res_cnt, psol);1315 csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe_v2,1316 wrb_index, psol);1317 csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,1318 cid, psol);1319 csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,1320 hw_sts, psol);1321 csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe_v2,1322 i_cmd_wnd, psol);1323 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,1324 cmd_cmpl, psol))1325 csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,1326 i_sts, psol);1327 else1328 csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe_v2,1329 i_sts, psol);1330 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,1331 u, psol))1332 csol_cqe->i_flags = ISCSI_FLAG_CMD_UNDERFLOW;1333 1334 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,1335 o, psol))1336 csol_cqe->i_flags |= ISCSI_FLAG_CMD_OVERFLOW;1337 }1338}1339 1340 1341static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,1342 struct beiscsi_hba *phba, struct sol_cqe *psol)1343{1344 struct iscsi_conn *conn = beiscsi_conn->conn;1345 struct iscsi_session *session = conn->session;1346 struct common_sol_cqe csol_cqe = {0};1347 struct hwi_wrb_context *pwrb_context;1348 struct hwi_controller *phwi_ctrlr;1349 struct wrb_handle *pwrb_handle;1350 struct iscsi_task *task;1351 uint16_t cri_index = 0;1352 uint8_t type;1353 1354 phwi_ctrlr = phba->phwi_ctrlr;1355 1356 /* Copy the elements to a common structure */1357 adapter_get_sol_cqe(phba, psol, &csol_cqe);1358 1359 cri_index = BE_GET_CRI_FROM_CID(csol_cqe.cid);1360 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];1361 1362 pwrb_handle = pwrb_context->pwrb_handle_basestd[1363 csol_cqe.wrb_index];1364 1365 spin_lock_bh(&session->back_lock);1366 task = pwrb_handle->pio_handle;1367 if (!task) {1368 spin_unlock_bh(&session->back_lock);1369 return;1370 }1371 type = ((struct beiscsi_io_task *)task->dd_data)->wrb_type;1372 1373 switch (type) {1374 case HWH_TYPE_IO:1375 case HWH_TYPE_IO_RD:1376 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) ==1377 ISCSI_OP_NOOP_OUT)1378 be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);1379 else1380 be_complete_io(beiscsi_conn, task, &csol_cqe);1381 break;1382 1383 case HWH_TYPE_LOGOUT:1384 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT)1385 be_complete_logout(beiscsi_conn, task, &csol_cqe);1386 else1387 be_complete_tmf(beiscsi_conn, task, &csol_cqe);1388 break;1389 1390 case HWH_TYPE_LOGIN:1391 beiscsi_log(phba, KERN_ERR,1392 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,1393 "BM_%d :\t\t No HWH_TYPE_LOGIN Expected in"1394 " %s- Solicited path\n", __func__);1395 break;1396 1397 case HWH_TYPE_NOP:1398 be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);1399 break;1400 1401 default:1402 beiscsi_log(phba, KERN_WARNING,1403 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,1404 "BM_%d : In %s, unknown type = %d "1405 "wrb_index 0x%x CID 0x%x\n", __func__, type,1406 csol_cqe.wrb_index,1407 csol_cqe.cid);1408 break;1409 }1410 1411 spin_unlock_bh(&session->back_lock);1412}1413 1414/*1415 * ASYNC PDUs include1416 * a. Unsolicited NOP-In (target initiated NOP-In)1417 * b. ASYNC Messages1418 * c. Reject PDU1419 * d. Login response1420 * These headers arrive unprocessed by the EP firmware.1421 * iSCSI layer processes them.1422 */1423static unsigned int1424beiscsi_complete_pdu(struct beiscsi_conn *beiscsi_conn,1425 struct pdu_base *phdr, void *pdata, unsigned int dlen)1426{1427 struct beiscsi_hba *phba = beiscsi_conn->phba;1428 struct iscsi_conn *conn = beiscsi_conn->conn;1429 struct beiscsi_io_task *io_task;1430 struct iscsi_hdr *login_hdr;1431 struct iscsi_task *task;1432 u8 code;1433 1434 code = AMAP_GET_BITS(struct amap_pdu_base, opcode, phdr);1435 switch (code) {1436 case ISCSI_OP_NOOP_IN:1437 pdata = NULL;1438 dlen = 0;1439 break;1440 case ISCSI_OP_ASYNC_EVENT:1441 break;1442 case ISCSI_OP_REJECT:1443 WARN_ON(!pdata);1444 WARN_ON(!(dlen == 48));1445 beiscsi_log(phba, KERN_ERR,1446 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,1447 "BM_%d : In ISCSI_OP_REJECT\n");1448 break;1449 case ISCSI_OP_LOGIN_RSP:1450 case ISCSI_OP_TEXT_RSP:1451 task = conn->login_task;1452 io_task = task->dd_data;1453 login_hdr = (struct iscsi_hdr *)phdr;1454 login_hdr->itt = io_task->libiscsi_itt;1455 break;1456 default:1457 beiscsi_log(phba, KERN_WARNING,1458 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,1459 "BM_%d : unrecognized async PDU opcode 0x%x\n",1460 code);1461 return 1;1462 }1463 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)phdr, pdata, dlen);1464 return 0;1465}1466 1467static inline void1468beiscsi_hdl_put_handle(struct hd_async_context *pasync_ctx,1469 struct hd_async_handle *pasync_handle)1470{1471 pasync_handle->is_final = 0;1472 pasync_handle->buffer_len = 0;1473 pasync_handle->in_use = 0;1474 list_del_init(&pasync_handle->link);1475}1476 1477static void1478beiscsi_hdl_purge_handles(struct beiscsi_hba *phba,1479 struct hd_async_context *pasync_ctx,1480 u16 cri)1481{1482 struct hd_async_handle *pasync_handle, *tmp_handle;1483 struct list_head *plist;1484 1485 plist = &pasync_ctx->async_entry[cri].wq.list;1486 list_for_each_entry_safe(pasync_handle, tmp_handle, plist, link)1487 beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);1488 1489 INIT_LIST_HEAD(&pasync_ctx->async_entry[cri].wq.list);1490 pasync_ctx->async_entry[cri].wq.hdr_len = 0;1491 pasync_ctx->async_entry[cri].wq.bytes_received = 0;1492 pasync_ctx->async_entry[cri].wq.bytes_needed = 0;1493}1494 1495static struct hd_async_handle *1496beiscsi_hdl_get_handle(struct beiscsi_conn *beiscsi_conn,1497 struct hd_async_context *pasync_ctx,1498 struct i_t_dpdu_cqe *pdpdu_cqe,1499 u8 *header)1500{1501 struct beiscsi_hba *phba = beiscsi_conn->phba;1502 struct hd_async_handle *pasync_handle;1503 struct be_bus_address phys_addr;1504 u16 cid, code, ci, cri;1505 u8 final, error = 0;1506 u32 dpl;1507 1508 cid = beiscsi_conn->beiscsi_conn_cid;1509 cri = BE_GET_ASYNC_CRI_FROM_CID(cid);1510 /**1511 * This function is invoked to get the right async_handle structure1512 * from a given DEF PDU CQ entry.1513 *1514 * - index in CQ entry gives the vertical index1515 * - address in CQ entry is the offset where the DMA last ended1516 * - final - no more notifications for this PDU1517 */1518 if (is_chip_be2_be3r(phba)) {1519 dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,1520 dpl, pdpdu_cqe);1521 ci = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,1522 index, pdpdu_cqe);1523 final = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,1524 final, pdpdu_cqe);1525 } else {1526 dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,1527 dpl, pdpdu_cqe);1528 ci = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,1529 index, pdpdu_cqe);1530 final = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,1531 final, pdpdu_cqe);1532 }1533 1534 /**1535 * DB addr Hi/Lo is same for BE and SKH.1536 * Subtract the dataplacementlength to get to the base.1537 */1538 phys_addr.u.a32.address_lo = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,1539 db_addr_lo, pdpdu_cqe);1540 phys_addr.u.a32.address_lo -= dpl;1541 phys_addr.u.a32.address_hi = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,1542 db_addr_hi, pdpdu_cqe);1543 1544 code = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe, code, pdpdu_cqe);1545 switch (code) {1546 case UNSOL_HDR_NOTIFY:1547 pasync_handle = pasync_ctx->async_entry[ci].header;1548 *header = 1;1549 break;1550 case UNSOL_DATA_DIGEST_ERROR_NOTIFY:1551 error = 1;1552 fallthrough;1553 case UNSOL_DATA_NOTIFY:1554 pasync_handle = pasync_ctx->async_entry[ci].data;1555 break;1556 /* called only for above codes */1557 default:1558 return NULL;1559 }1560 1561 if (pasync_handle->pa.u.a64.address != phys_addr.u.a64.address ||1562 pasync_handle->index != ci) {1563 /* driver bug - if ci does not match async handle index */1564 error = 1;1565 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,1566 "BM_%d : cid %u async PDU handle mismatch - addr in %cQE %llx at %u:addr in CQE %llx ci %u\n",1567 cid, pasync_handle->is_header ? 'H' : 'D',1568 pasync_handle->pa.u.a64.address,1569 pasync_handle->index,1570 phys_addr.u.a64.address, ci);1571 /* FW has stale address - attempt continuing by dropping */1572 }1573 1574 /**1575 * DEF PDU header and data buffers with errors should be simply1576 * dropped as there are no consumers for it.1577 */1578 if (error) {1579 beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);1580 return NULL;1581 }1582 1583 if (pasync_handle->in_use || !list_empty(&pasync_handle->link)) {1584 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,1585 "BM_%d : cid %d async PDU handle in use - code %d ci %d addr %llx\n",1586 cid, code, ci, phys_addr.u.a64.address);1587 beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);1588 }1589 1590 list_del_init(&pasync_handle->link);1591 /**1592 * Each CID is associated with unique CRI.1593 * ASYNC_CRI_FROM_CID mapping and CRI_FROM_CID are totaly different.1594 **/1595 pasync_handle->cri = cri;1596 pasync_handle->is_final = final;1597 pasync_handle->buffer_len = dpl;1598 pasync_handle->in_use = 1;1599 1600 return pasync_handle;1601}1602 1603static unsigned int1604beiscsi_hdl_fwd_pdu(struct beiscsi_conn *beiscsi_conn,1605 struct hd_async_context *pasync_ctx,1606 u16 cri)1607{1608 struct iscsi_session *session = beiscsi_conn->conn->session;1609 struct hd_async_handle *pasync_handle, *plast_handle;1610 struct beiscsi_hba *phba = beiscsi_conn->phba;1611 void *phdr = NULL, *pdata = NULL;1612 u32 dlen = 0, status = 0;1613 struct list_head *plist;1614 1615 plist = &pasync_ctx->async_entry[cri].wq.list;1616 plast_handle = NULL;1617 list_for_each_entry(pasync_handle, plist, link) {1618 plast_handle = pasync_handle;1619 /* get the header, the first entry */1620 if (!phdr) {1621 phdr = pasync_handle->pbuffer;1622 continue;1623 }1624 /* use first buffer to collect all the data */1625 if (!pdata) {1626 pdata = pasync_handle->pbuffer;1627 dlen = pasync_handle->buffer_len;1628 continue;1629 }1630 if (!pasync_handle->buffer_len ||1631 (dlen + pasync_handle->buffer_len) >1632 pasync_ctx->async_data.buffer_size)1633 break;1634 memcpy(pdata + dlen, pasync_handle->pbuffer,1635 pasync_handle->buffer_len);1636 dlen += pasync_handle->buffer_len;1637 }1638 1639 if (!plast_handle->is_final) {1640 /* last handle should have final PDU notification from FW */1641 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,1642 "BM_%d : cid %u %p fwd async PDU opcode %x with last handle missing - HL%u:DN%u:DR%u\n",1643 beiscsi_conn->beiscsi_conn_cid, plast_handle,1644 AMAP_GET_BITS(struct amap_pdu_base, opcode, phdr),1645 pasync_ctx->async_entry[cri].wq.hdr_len,1646 pasync_ctx->async_entry[cri].wq.bytes_needed,1647 pasync_ctx->async_entry[cri].wq.bytes_received);1648 }1649 spin_lock_bh(&session->back_lock);1650 status = beiscsi_complete_pdu(beiscsi_conn, phdr, pdata, dlen);1651 spin_unlock_bh(&session->back_lock);1652 beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);1653 return status;1654}1655 1656static unsigned int1657beiscsi_hdl_gather_pdu(struct beiscsi_conn *beiscsi_conn,1658 struct hd_async_context *pasync_ctx,1659 struct hd_async_handle *pasync_handle)1660{1661 unsigned int bytes_needed = 0, status = 0;1662 u16 cri = pasync_handle->cri;1663 struct cri_wait_queue *wq;1664 struct beiscsi_hba *phba;1665 struct pdu_base *ppdu;1666 char *err = "";1667 1668 phba = beiscsi_conn->phba;1669 wq = &pasync_ctx->async_entry[cri].wq;1670 if (pasync_handle->is_header) {1671 /* check if PDU hdr is rcv'd when old hdr not completed */1672 if (wq->hdr_len) {1673 err = "incomplete";1674 goto drop_pdu;1675 }1676 ppdu = pasync_handle->pbuffer;1677 bytes_needed = AMAP_GET_BITS(struct amap_pdu_base,1678 data_len_hi, ppdu);1679 bytes_needed <<= 16;1680 bytes_needed |= be16_to_cpu(AMAP_GET_BITS(struct amap_pdu_base,1681 data_len_lo, ppdu));1682 wq->hdr_len = pasync_handle->buffer_len;1683 wq->bytes_received = 0;1684 wq->bytes_needed = bytes_needed;1685 list_add_tail(&pasync_handle->link, &wq->list);1686 if (!bytes_needed)1687 status = beiscsi_hdl_fwd_pdu(beiscsi_conn,1688 pasync_ctx, cri);1689 } else {1690 /* check if data received has header and is needed */1691 if (!wq->hdr_len || !wq->bytes_needed) {1692 err = "header less";1693 goto drop_pdu;1694 }1695 wq->bytes_received += pasync_handle->buffer_len;1696 /* Something got overwritten? Better catch it here. */1697 if (wq->bytes_received > wq->bytes_needed) {1698 err = "overflow";1699 goto drop_pdu;1700 }1701 list_add_tail(&pasync_handle->link, &wq->list);1702 if (wq->bytes_received == wq->bytes_needed)1703 status = beiscsi_hdl_fwd_pdu(beiscsi_conn,1704 pasync_ctx, cri);1705 }1706 return status;1707 1708drop_pdu:1709 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,1710 "BM_%d : cid %u async PDU %s - def-%c:HL%u:DN%u:DR%u\n",1711 beiscsi_conn->beiscsi_conn_cid, err,1712 pasync_handle->is_header ? 'H' : 'D',1713 wq->hdr_len, wq->bytes_needed,1714 pasync_handle->buffer_len);1715 /* discard this handle */1716 beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);1717 /* free all the other handles in cri_wait_queue */1718 beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);1719 /* try continuing */1720 return status;1721}1722 1723static void1724beiscsi_hdq_post_handles(struct beiscsi_hba *phba,1725 u8 header, u8 ulp_num, u16 nbuf)1726{1727 struct hd_async_handle *pasync_handle;1728 struct hd_async_context *pasync_ctx;1729 struct hwi_controller *phwi_ctrlr;1730 struct phys_addr *pasync_sge;1731 u32 ring_id, doorbell = 0;1732 u32 doorbell_offset;1733 u16 prod, pi;1734 1735 phwi_ctrlr = phba->phwi_ctrlr;1736 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num);1737 if (header) {1738 pasync_sge = pasync_ctx->async_header.ring_base;1739 pi = pasync_ctx->async_header.pi;1740 ring_id = phwi_ctrlr->default_pdu_hdr[ulp_num].id;1741 doorbell_offset = phwi_ctrlr->default_pdu_hdr[ulp_num].1742 doorbell_offset;1743 } else {1744 pasync_sge = pasync_ctx->async_data.ring_base;1745 pi = pasync_ctx->async_data.pi;1746 ring_id = phwi_ctrlr->default_pdu_data[ulp_num].id;1747 doorbell_offset = phwi_ctrlr->default_pdu_data[ulp_num].1748 doorbell_offset;1749 }1750 1751 for (prod = 0; prod < nbuf; prod++) {1752 if (header)1753 pasync_handle = pasync_ctx->async_entry[pi].header;1754 else1755 pasync_handle = pasync_ctx->async_entry[pi].data;1756 WARN_ON(pasync_handle->is_header != header);1757 WARN_ON(pasync_handle->index != pi);1758 /* setup the ring only once */1759 if (nbuf == pasync_ctx->num_entries) {1760 /* note hi is lo */1761 pasync_sge[pi].hi = pasync_handle->pa.u.a32.address_lo;1762 pasync_sge[pi].lo = pasync_handle->pa.u.a32.address_hi;1763 }1764 if (++pi == pasync_ctx->num_entries)1765 pi = 0;1766 }1767 1768 if (header)1769 pasync_ctx->async_header.pi = pi;1770 else1771 pasync_ctx->async_data.pi = pi;1772 1773 doorbell |= ring_id & DB_DEF_PDU_RING_ID_MASK;1774 doorbell |= 1 << DB_DEF_PDU_REARM_SHIFT;1775 doorbell |= 0 << DB_DEF_PDU_EVENT_SHIFT;1776 doorbell |= (prod & DB_DEF_PDU_CQPROC_MASK) << DB_DEF_PDU_CQPROC_SHIFT;1777 iowrite32(doorbell, phba->db_va + doorbell_offset);1778}1779 1780static void1781beiscsi_hdq_process_compl(struct beiscsi_conn *beiscsi_conn,1782 struct i_t_dpdu_cqe *pdpdu_cqe)1783{1784 struct beiscsi_hba *phba = beiscsi_conn->phba;1785 struct hd_async_handle *pasync_handle = NULL;1786 struct hd_async_context *pasync_ctx;1787 struct hwi_controller *phwi_ctrlr;1788 u8 ulp_num, consumed, header = 0;1789 u16 cid_cri;1790 1791 phwi_ctrlr = phba->phwi_ctrlr;1792 cid_cri = BE_GET_CRI_FROM_CID(beiscsi_conn->beiscsi_conn_cid);1793 ulp_num = BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, cid_cri);1794 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num);1795 pasync_handle = beiscsi_hdl_get_handle(beiscsi_conn, pasync_ctx,1796 pdpdu_cqe, &header);1797 if (is_chip_be2_be3r(phba))1798 consumed = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,1799 num_cons, pdpdu_cqe);1800 else1801 consumed = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,1802 num_cons, pdpdu_cqe);1803 if (pasync_handle)1804 beiscsi_hdl_gather_pdu(beiscsi_conn, pasync_ctx, pasync_handle);1805 /* num_cons indicates number of 8 RQEs consumed */1806 if (consumed)1807 beiscsi_hdq_post_handles(phba, header, ulp_num, 8 * consumed);1808}1809 1810void beiscsi_process_mcc_cq(struct beiscsi_hba *phba)1811{1812 struct be_queue_info *mcc_cq;1813 struct be_mcc_compl *mcc_compl;1814 unsigned int num_processed = 0;1815 1816 mcc_cq = &phba->ctrl.mcc_obj.cq;1817 mcc_compl = queue_tail_node(mcc_cq);1818 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);1819 while (mcc_compl->flags & CQE_FLAGS_VALID_MASK) {1820 if (beiscsi_hba_in_error(phba))1821 return;1822 1823 if (num_processed >= 32) {1824 hwi_ring_cq_db(phba, mcc_cq->id,1825 num_processed, 0);1826 num_processed = 0;1827 }1828 if (mcc_compl->flags & CQE_FLAGS_ASYNC_MASK) {1829 beiscsi_process_async_event(phba, mcc_compl);1830 } else if (mcc_compl->flags & CQE_FLAGS_COMPLETED_MASK) {1831 beiscsi_process_mcc_compl(&phba->ctrl, mcc_compl);1832 }1833 1834 mcc_compl->flags = 0;1835 queue_tail_inc(mcc_cq);1836 mcc_compl = queue_tail_node(mcc_cq);1837 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);1838 num_processed++;1839 }1840 1841 if (num_processed > 0)1842 hwi_ring_cq_db(phba, mcc_cq->id, num_processed, 1);1843}1844 1845static void beiscsi_mcc_work(struct work_struct *work)1846{1847 struct be_eq_obj *pbe_eq;1848 struct beiscsi_hba *phba;1849 1850 pbe_eq = container_of(work, struct be_eq_obj, mcc_work);1851 phba = pbe_eq->phba;1852 beiscsi_process_mcc_cq(phba);1853 /* rearm EQ for further interrupts */1854 if (!beiscsi_hba_in_error(phba))1855 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);1856}1857 1858/**1859 * beiscsi_process_cq()- Process the Completion Queue1860 * @pbe_eq: Event Q on which the Completion has come1861 * @budget: Max number of events to processed1862 *1863 * return1864 * Number of Completion Entries processed.1865 **/1866unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq, int budget)1867{1868 struct be_queue_info *cq;1869 struct sol_cqe *sol;1870 unsigned int total = 0;1871 unsigned int num_processed = 0;1872 unsigned short code = 0, cid = 0;1873 uint16_t cri_index = 0;1874 struct beiscsi_conn *beiscsi_conn;1875 struct beiscsi_endpoint *beiscsi_ep;1876 struct iscsi_endpoint *ep;1877 struct beiscsi_hba *phba;1878 1879 cq = pbe_eq->cq;1880 sol = queue_tail_node(cq);1881 phba = pbe_eq->phba;1882 1883 while (sol->dw[offsetof(struct amap_sol_cqe, valid) / 32] &1884 CQE_VALID_MASK) {1885 if (beiscsi_hba_in_error(phba))1886 return 0;1887 1888 be_dws_le_to_cpu(sol, sizeof(struct sol_cqe));1889 1890 code = (sol->dw[offsetof(struct amap_sol_cqe, code) / 32] &1891 CQE_CODE_MASK);1892 1893 /* Get the CID */1894 if (is_chip_be2_be3r(phba)) {1895 cid = AMAP_GET_BITS(struct amap_sol_cqe, cid, sol);1896 } else {1897 if ((code == DRIVERMSG_NOTIFY) ||1898 (code == UNSOL_HDR_NOTIFY) ||1899 (code == UNSOL_DATA_NOTIFY))1900 cid = AMAP_GET_BITS(1901 struct amap_i_t_dpdu_cqe_v2,1902 cid, sol);1903 else1904 cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,1905 cid, sol);1906 }1907 1908 cri_index = BE_GET_CRI_FROM_CID(cid);1909 ep = phba->ep_array[cri_index];1910 1911 if (ep == NULL) {1912 /* connection has already been freed1913 * just move on to next one1914 */1915 beiscsi_log(phba, KERN_WARNING,1916 BEISCSI_LOG_INIT,1917 "BM_%d : proc cqe of disconn ep: cid %d\n",1918 cid);1919 goto proc_next_cqe;1920 }1921 1922 beiscsi_ep = ep->dd_data;1923 beiscsi_conn = beiscsi_ep->conn;1924 1925 /* replenish cq */1926 if (num_processed == 32) {1927 hwi_ring_cq_db(phba, cq->id, 32, 0);1928 num_processed = 0;1929 }1930 total++;1931 1932 switch (code) {1933 case SOL_CMD_COMPLETE:1934 hwi_complete_cmd(beiscsi_conn, phba, sol);1935 break;1936 case DRIVERMSG_NOTIFY:1937 beiscsi_log(phba, KERN_INFO,1938 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,1939 "BM_%d : Received %s[%d] on CID : %d\n",1940 cqe_desc[code], code, cid);1941 1942 hwi_complete_drvr_msgs(beiscsi_conn, phba, sol);1943 break;1944 case UNSOL_HDR_NOTIFY:1945 beiscsi_log(phba, KERN_INFO,1946 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,1947 "BM_%d : Received %s[%d] on CID : %d\n",1948 cqe_desc[code], code, cid);1949 1950 spin_lock_bh(&phba->async_pdu_lock);1951 beiscsi_hdq_process_compl(beiscsi_conn,1952 (struct i_t_dpdu_cqe *)sol);1953 spin_unlock_bh(&phba->async_pdu_lock);1954 break;1955 case UNSOL_DATA_NOTIFY:1956 beiscsi_log(phba, KERN_INFO,1957 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,1958 "BM_%d : Received %s[%d] on CID : %d\n",1959 cqe_desc[code], code, cid);1960 1961 spin_lock_bh(&phba->async_pdu_lock);1962 beiscsi_hdq_process_compl(beiscsi_conn,1963 (struct i_t_dpdu_cqe *)sol);1964 spin_unlock_bh(&phba->async_pdu_lock);1965 break;1966 case CXN_INVALIDATE_INDEX_NOTIFY:1967 case CMD_INVALIDATED_NOTIFY:1968 case CXN_INVALIDATE_NOTIFY:1969 beiscsi_log(phba, KERN_ERR,1970 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,1971 "BM_%d : Ignoring %s[%d] on CID : %d\n",1972 cqe_desc[code], code, cid);1973 break;1974 case CXN_KILLED_HDR_DIGEST_ERR:1975 case SOL_CMD_KILLED_DATA_DIGEST_ERR:1976 beiscsi_log(phba, KERN_ERR,1977 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,1978 "BM_%d : Cmd Notification %s[%d] on CID : %d\n",1979 cqe_desc[code], code, cid);1980 break;1981 case CMD_KILLED_INVALID_STATSN_RCVD:1982 case CMD_KILLED_INVALID_R2T_RCVD:1983 case CMD_CXN_KILLED_LUN_INVALID:1984 case CMD_CXN_KILLED_ICD_INVALID:1985 case CMD_CXN_KILLED_ITT_INVALID:1986 case CMD_CXN_KILLED_SEQ_OUTOFORDER:1987 case CMD_CXN_KILLED_INVALID_DATASN_RCVD:1988 beiscsi_log(phba, KERN_ERR,1989 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,1990 "BM_%d : Cmd Notification %s[%d] on CID : %d\n",1991 cqe_desc[code], code, cid);1992 break;1993 case UNSOL_DATA_DIGEST_ERROR_NOTIFY:1994 beiscsi_log(phba, KERN_ERR,1995 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,1996 "BM_%d : Dropping %s[%d] on DPDU ring on CID : %d\n",1997 cqe_desc[code], code, cid);1998 spin_lock_bh(&phba->async_pdu_lock);1999 /* driver consumes the entry and drops the contents */2000 beiscsi_hdq_process_compl(beiscsi_conn,2001 (struct i_t_dpdu_cqe *)sol);2002 spin_unlock_bh(&phba->async_pdu_lock);2003 break;2004 case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL:2005 case CXN_KILLED_BURST_LEN_MISMATCH:2006 case CXN_KILLED_AHS_RCVD:2007 case CXN_KILLED_UNKNOWN_HDR:2008 case CXN_KILLED_STALE_ITT_TTT_RCVD:2009 case CXN_KILLED_INVALID_ITT_TTT_RCVD:2010 case CXN_KILLED_TIMED_OUT:2011 case CXN_KILLED_FIN_RCVD:2012 case CXN_KILLED_RST_SENT:2013 case CXN_KILLED_RST_RCVD:2014 case CXN_KILLED_BAD_UNSOL_PDU_RCVD:2015 case CXN_KILLED_BAD_WRB_INDEX_ERROR:2016 case CXN_KILLED_OVER_RUN_RESIDUAL:2017 case CXN_KILLED_UNDER_RUN_RESIDUAL:2018 case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN:2019 beiscsi_log(phba, KERN_ERR,2020 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,2021 "BM_%d : Event %s[%d] received on CID : %d\n",2022 cqe_desc[code], code, cid);2023 if (beiscsi_conn)2024 iscsi_conn_failure(beiscsi_conn->conn,2025 ISCSI_ERR_CONN_FAILED);2026 break;2027 default:2028 beiscsi_log(phba, KERN_ERR,2029 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,2030 "BM_%d : Invalid CQE Event Received Code : %d CID 0x%x...\n",2031 code, cid);2032 break;2033 }2034 2035proc_next_cqe:2036 AMAP_SET_BITS(struct amap_sol_cqe, valid, sol, 0);2037 queue_tail_inc(cq);2038 sol = queue_tail_node(cq);2039 num_processed++;2040 if (total == budget)2041 break;2042 }2043 2044 hwi_ring_cq_db(phba, cq->id, num_processed, 1);2045 return total;2046}2047 2048static int be_iopoll(struct irq_poll *iop, int budget)2049{2050 unsigned int ret, io_events;2051 struct beiscsi_hba *phba;2052 struct be_eq_obj *pbe_eq;2053 struct be_eq_entry *eqe = NULL;2054 struct be_queue_info *eq;2055 2056 pbe_eq = container_of(iop, struct be_eq_obj, iopoll);2057 phba = pbe_eq->phba;2058 if (beiscsi_hba_in_error(phba)) {2059 irq_poll_complete(iop);2060 return 0;2061 }2062 2063 io_events = 0;2064 eq = &pbe_eq->q;2065 eqe = queue_tail_node(eq);2066 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] &2067 EQE_VALID_MASK) {2068 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);2069 queue_tail_inc(eq);2070 eqe = queue_tail_node(eq);2071 io_events++;2072 }2073 hwi_ring_eq_db(phba, eq->id, 1, io_events, 0, 1);2074 2075 ret = beiscsi_process_cq(pbe_eq, budget);2076 pbe_eq->cq_count += ret;2077 if (ret < budget) {2078 irq_poll_complete(iop);2079 beiscsi_log(phba, KERN_INFO,2080 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,2081 "BM_%d : rearm pbe_eq->q.id =%d ret %d\n",2082 pbe_eq->q.id, ret);2083 if (!beiscsi_hba_in_error(phba))2084 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);2085 }2086 return ret;2087}2088 2089static void2090hwi_write_sgl_v2(struct iscsi_wrb *pwrb, struct scatterlist *sg,2091 unsigned int num_sg, struct beiscsi_io_task *io_task)2092{2093 struct iscsi_sge *psgl;2094 unsigned int sg_len, index;2095 unsigned int sge_len = 0;2096 unsigned long long addr;2097 struct scatterlist *l_sg;2098 unsigned int offset;2099 2100 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_lo, pwrb,2101 io_task->bhs_pa.u.a32.address_lo);2102 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_hi, pwrb,2103 io_task->bhs_pa.u.a32.address_hi);2104 2105 l_sg = sg;2106 for (index = 0; (index < num_sg) && (index < 2); index++,2107 sg = sg_next(sg)) {2108 if (index == 0) {2109 sg_len = sg_dma_len(sg);2110 addr = (u64) sg_dma_address(sg);2111 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,2112 sge0_addr_lo, pwrb,2113 lower_32_bits(addr));2114 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,2115 sge0_addr_hi, pwrb,2116 upper_32_bits(addr));2117 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,2118 sge0_len, pwrb,2119 sg_len);2120 sge_len = sg_len;2121 } else {2122 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_r2t_offset,2123 pwrb, sge_len);2124 sg_len = sg_dma_len(sg);2125 addr = (u64) sg_dma_address(sg);2126 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,2127 sge1_addr_lo, pwrb,2128 lower_32_bits(addr));2129 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,2130 sge1_addr_hi, pwrb,2131 upper_32_bits(addr));2132 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,2133 sge1_len, pwrb,2134 sg_len);2135 }2136 }2137 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;2138 memset(psgl, 0, sizeof(*psgl) * BE2_SGE);2139 2140 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);2141 2142 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,2143 io_task->bhs_pa.u.a32.address_hi);2144 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,2145 io_task->bhs_pa.u.a32.address_lo);2146 2147 if (num_sg == 1) {2148 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,2149 1);2150 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,2151 0);2152 } else if (num_sg == 2) {2153 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,2154 0);2155 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,2156 1);2157 } else {2158 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,2159 0);2160 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,2161 0);2162 }2163 2164 sg = l_sg;2165 psgl++;2166 psgl++;2167 offset = 0;2168 for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {2169 sg_len = sg_dma_len(sg);2170 addr = (u64) sg_dma_address(sg);2171 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,2172 lower_32_bits(addr));2173 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,2174 upper_32_bits(addr));2175 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);2176 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);2177 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);2178 offset += sg_len;2179 }2180 psgl--;2181 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);2182}2183 2184static void2185hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg,2186 unsigned int num_sg, struct beiscsi_io_task *io_task)2187{2188 struct iscsi_sge *psgl;2189 unsigned int sg_len, index;2190 unsigned int sge_len = 0;2191 unsigned long long addr;2192 struct scatterlist *l_sg;2193 unsigned int offset;2194 2195 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,2196 io_task->bhs_pa.u.a32.address_lo);2197 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,2198 io_task->bhs_pa.u.a32.address_hi);2199 2200 l_sg = sg;2201 for (index = 0; (index < num_sg) && (index < 2); index++,2202 sg = sg_next(sg)) {2203 if (index == 0) {2204 sg_len = sg_dma_len(sg);2205 addr = (u64) sg_dma_address(sg);2206 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,2207 ((u32)(addr & 0xFFFFFFFF)));2208 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,2209 ((u32)(addr >> 32)));2210 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,2211 sg_len);2212 sge_len = sg_len;2213 } else {2214 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset,2215 pwrb, sge_len);2216 sg_len = sg_dma_len(sg);2217 addr = (u64) sg_dma_address(sg);2218 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_lo, pwrb,2219 ((u32)(addr & 0xFFFFFFFF)));2220 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_hi, pwrb,2221 ((u32)(addr >> 32)));2222 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_len, pwrb,2223 sg_len);2224 }2225 }2226 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;2227 memset(psgl, 0, sizeof(*psgl) * BE2_SGE);2228 2229 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);2230 2231 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,2232 io_task->bhs_pa.u.a32.address_hi);2233 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,2234 io_task->bhs_pa.u.a32.address_lo);2235 2236 if (num_sg == 1) {2237 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,2238 1);2239 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,2240 0);2241 } else if (num_sg == 2) {2242 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,2243 0);2244 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,2245 1);2246 } else {2247 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,2248 0);2249 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,2250 0);2251 }2252 sg = l_sg;2253 psgl++;2254 psgl++;2255 offset = 0;2256 for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {2257 sg_len = sg_dma_len(sg);2258 addr = (u64) sg_dma_address(sg);2259 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,2260 (addr & 0xFFFFFFFF));2261 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,2262 (addr >> 32));2263 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);2264 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);2265 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);2266 offset += sg_len;2267 }2268 psgl--;2269 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);2270}2271 2272/**2273 * hwi_write_buffer()- Populate the WRB with task info2274 * @pwrb: ptr to the WRB entry2275 * @task: iscsi task which is to be executed2276 **/2277static int hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task)2278{2279 struct iscsi_sge *psgl;2280 struct beiscsi_io_task *io_task = task->dd_data;2281 struct beiscsi_conn *beiscsi_conn = io_task->conn;2282 struct beiscsi_hba *phba = beiscsi_conn->phba;2283 uint8_t dsp_value = 0;2284 2285 io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2;2286 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,2287 io_task->bhs_pa.u.a32.address_lo);2288 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,2289 io_task->bhs_pa.u.a32.address_hi);2290 2291 if (task->data) {2292 2293 /* Check for the data_count */2294 dsp_value = (task->data_count) ? 1 : 0;2295 2296 if (is_chip_be2_be3r(phba))2297 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp,2298 pwrb, dsp_value);2299 else2300 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp,2301 pwrb, dsp_value);2302 2303 /* Map addr only if there is data_count */2304 if (dsp_value) {2305 io_task->mtask_addr = dma_map_single(&phba->pcidev->dev,2306 task->data,2307 task->data_count,2308 DMA_TO_DEVICE);2309 if (dma_mapping_error(&phba->pcidev->dev,2310 io_task->mtask_addr))2311 return -ENOMEM;2312 io_task->mtask_data_count = task->data_count;2313 } else2314 io_task->mtask_addr = 0;2315 2316 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,2317 lower_32_bits(io_task->mtask_addr));2318 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,2319 upper_32_bits(io_task->mtask_addr));2320 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,2321 task->data_count);2322 2323 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, 1);2324 } else {2325 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);2326 io_task->mtask_addr = 0;2327 }2328 2329 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;2330 2331 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len);2332 2333 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,2334 io_task->bhs_pa.u.a32.address_hi);2335 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,2336 io_task->bhs_pa.u.a32.address_lo);2337 if (task->data) {2338 psgl++;2339 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, 0);2340 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, 0);2341 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0);2342 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, 0);2343 AMAP_SET_BITS(struct amap_iscsi_sge, rsvd0, psgl, 0);2344 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);2345 2346 psgl++;2347 if (task->data) {2348 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,2349 lower_32_bits(io_task->mtask_addr));2350 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,2351 upper_32_bits(io_task->mtask_addr));2352 }2353 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0x106);2354 }2355 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);2356 return 0;2357}2358 2359/**2360 * beiscsi_find_mem_req()- Find mem needed2361 * @phba: ptr to HBA struct2362 **/2363static void beiscsi_find_mem_req(struct beiscsi_hba *phba)2364{2365 uint8_t mem_descr_index, ulp_num;2366 unsigned int num_async_pdu_buf_pages;2367 unsigned int num_async_pdu_data_pages, wrb_sz_per_cxn;2368 unsigned int num_async_pdu_buf_sgl_pages, num_async_pdu_data_sgl_pages;2369 2370 phba->params.hwi_ws_sz = sizeof(struct hwi_controller);2371 2372 phba->mem_req[ISCSI_MEM_GLOBAL_HEADER] = 2 *2373 BE_ISCSI_PDU_HEADER_SIZE;2374 phba->mem_req[HWI_MEM_ADDN_CONTEXT] =2375 sizeof(struct hwi_context_memory);2376 2377 2378 phba->mem_req[HWI_MEM_WRB] = sizeof(struct iscsi_wrb)2379 * (phba->params.wrbs_per_cxn)2380 * phba->params.cxns_per_ctrl;2381 wrb_sz_per_cxn = sizeof(struct wrb_handle) *2382 (phba->params.wrbs_per_cxn);2383 phba->mem_req[HWI_MEM_WRBH] = roundup_pow_of_two((wrb_sz_per_cxn) *2384 phba->params.cxns_per_ctrl);2385 2386 phba->mem_req[HWI_MEM_SGLH] = sizeof(struct sgl_handle) *2387 phba->params.icds_per_ctrl;2388 phba->mem_req[HWI_MEM_SGE] = sizeof(struct iscsi_sge) *2389 phba->params.num_sge_per_io * phba->params.icds_per_ctrl;2390 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {2391 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {2392 2393 num_async_pdu_buf_sgl_pages =2394 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(2395 phba, ulp_num) *2396 sizeof(struct phys_addr));2397 2398 num_async_pdu_buf_pages =2399 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(2400 phba, ulp_num) *2401 phba->params.defpdu_hdr_sz);2402 2403 num_async_pdu_data_pages =2404 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(2405 phba, ulp_num) *2406 phba->params.defpdu_data_sz);2407 2408 num_async_pdu_data_sgl_pages =2409 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(2410 phba, ulp_num) *2411 sizeof(struct phys_addr));2412 2413 mem_descr_index = (HWI_MEM_TEMPLATE_HDR_ULP0 +2414 (ulp_num * MEM_DESCR_OFFSET));2415 phba->mem_req[mem_descr_index] =2416 BEISCSI_GET_CID_COUNT(phba, ulp_num) *2417 BEISCSI_TEMPLATE_HDR_PER_CXN_SIZE;2418 2419 mem_descr_index = (HWI_MEM_ASYNC_HEADER_BUF_ULP0 +2420 (ulp_num * MEM_DESCR_OFFSET));2421 phba->mem_req[mem_descr_index] =2422 num_async_pdu_buf_pages *2423 PAGE_SIZE;2424 2425 mem_descr_index = (HWI_MEM_ASYNC_DATA_BUF_ULP0 +2426 (ulp_num * MEM_DESCR_OFFSET));2427 phba->mem_req[mem_descr_index] =2428 num_async_pdu_data_pages *2429 PAGE_SIZE;2430 2431 mem_descr_index = (HWI_MEM_ASYNC_HEADER_RING_ULP0 +2432 (ulp_num * MEM_DESCR_OFFSET));2433 phba->mem_req[mem_descr_index] =2434 num_async_pdu_buf_sgl_pages *2435 PAGE_SIZE;2436 2437 mem_descr_index = (HWI_MEM_ASYNC_DATA_RING_ULP0 +2438 (ulp_num * MEM_DESCR_OFFSET));2439 phba->mem_req[mem_descr_index] =2440 num_async_pdu_data_sgl_pages *2441 PAGE_SIZE;2442 2443 mem_descr_index = (HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +2444 (ulp_num * MEM_DESCR_OFFSET));2445 phba->mem_req[mem_descr_index] =2446 BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *2447 sizeof(struct hd_async_handle);2448 2449 mem_descr_index = (HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +2450 (ulp_num * MEM_DESCR_OFFSET));2451 phba->mem_req[mem_descr_index] =2452 BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *2453 sizeof(struct hd_async_handle);2454 2455 mem_descr_index = (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +2456 (ulp_num * MEM_DESCR_OFFSET));2457 phba->mem_req[mem_descr_index] =2458 sizeof(struct hd_async_context) +2459 (BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *2460 sizeof(struct hd_async_entry));2461 }2462 }2463}2464 2465static int beiscsi_alloc_mem(struct beiscsi_hba *phba)2466{2467 dma_addr_t bus_add;2468 struct hwi_controller *phwi_ctrlr;2469 struct be_mem_descriptor *mem_descr;2470 struct mem_array *mem_arr, *mem_arr_orig;2471 unsigned int i, j, alloc_size, curr_alloc_size;2472 2473 phba->phwi_ctrlr = kzalloc(phba->params.hwi_ws_sz, GFP_KERNEL);2474 if (!phba->phwi_ctrlr)2475 return -ENOMEM;2476 2477 /* Allocate memory for wrb_context */2478 phwi_ctrlr = phba->phwi_ctrlr;2479 phwi_ctrlr->wrb_context = kcalloc(phba->params.cxns_per_ctrl,2480 sizeof(struct hwi_wrb_context),2481 GFP_KERNEL);2482 if (!phwi_ctrlr->wrb_context) {2483 kfree(phba->phwi_ctrlr);2484 return -ENOMEM;2485 }2486 2487 phba->init_mem = kcalloc(SE_MEM_MAX, sizeof(*mem_descr),2488 GFP_KERNEL);2489 if (!phba->init_mem) {2490 kfree(phwi_ctrlr->wrb_context);2491 kfree(phba->phwi_ctrlr);2492 return -ENOMEM;2493 }2494 2495 mem_arr_orig = kmalloc_array(BEISCSI_MAX_FRAGS_INIT,2496 sizeof(*mem_arr_orig),2497 GFP_KERNEL);2498 if (!mem_arr_orig) {2499 kfree(phba->init_mem);2500 kfree(phwi_ctrlr->wrb_context);2501 kfree(phba->phwi_ctrlr);2502 return -ENOMEM;2503 }2504 2505 mem_descr = phba->init_mem;2506 for (i = 0; i < SE_MEM_MAX; i++) {2507 if (!phba->mem_req[i]) {2508 mem_descr->mem_array = NULL;2509 mem_descr++;2510 continue;2511 }2512 2513 j = 0;2514 mem_arr = mem_arr_orig;2515 alloc_size = phba->mem_req[i];2516 memset(mem_arr, 0, sizeof(struct mem_array) *2517 BEISCSI_MAX_FRAGS_INIT);2518 curr_alloc_size = min(be_max_phys_size * 1024, alloc_size);2519 do {2520 mem_arr->virtual_address =2521 dma_alloc_coherent(&phba->pcidev->dev,2522 curr_alloc_size, &bus_add, GFP_KERNEL);2523 if (!mem_arr->virtual_address) {2524 if (curr_alloc_size <= BE_MIN_MEM_SIZE)2525 goto free_mem;2526 if (curr_alloc_size -2527 rounddown_pow_of_two(curr_alloc_size))2528 curr_alloc_size = rounddown_pow_of_two2529 (curr_alloc_size);2530 else2531 curr_alloc_size = curr_alloc_size / 2;2532 } else {2533 mem_arr->bus_address.u.2534 a64.address = (__u64) bus_add;2535 mem_arr->size = curr_alloc_size;2536 alloc_size -= curr_alloc_size;2537 curr_alloc_size = min(be_max_phys_size *2538 1024, alloc_size);2539 j++;2540 mem_arr++;2541 }2542 } while (alloc_size);2543 mem_descr->num_elements = j;2544 mem_descr->size_in_bytes = phba->mem_req[i];2545 mem_descr->mem_array = kmalloc_array(j, sizeof(*mem_arr),2546 GFP_KERNEL);2547 if (!mem_descr->mem_array)2548 goto free_mem;2549 2550 memcpy(mem_descr->mem_array, mem_arr_orig,2551 sizeof(struct mem_array) * j);2552 mem_descr++;2553 }2554 kfree(mem_arr_orig);2555 return 0;2556free_mem:2557 mem_descr->num_elements = j;2558 while ((i) || (j)) {2559 for (j = mem_descr->num_elements; j > 0; j--) {2560 dma_free_coherent(&phba->pcidev->dev,2561 mem_descr->mem_array[j - 1].size,2562 mem_descr->mem_array[j - 1].2563 virtual_address,2564 (unsigned long)mem_descr->2565 mem_array[j - 1].2566 bus_address.u.a64.address);2567 }2568 if (i) {2569 i--;2570 kfree(mem_descr->mem_array);2571 mem_descr--;2572 }2573 }2574 kfree(mem_arr_orig);2575 kfree(phba->init_mem);2576 kfree(phba->phwi_ctrlr->wrb_context);2577 kfree(phba->phwi_ctrlr);2578 return -ENOMEM;2579}2580 2581static int beiscsi_get_memory(struct beiscsi_hba *phba)2582{2583 beiscsi_find_mem_req(phba);2584 return beiscsi_alloc_mem(phba);2585}2586 2587static void iscsi_init_global_templates(struct beiscsi_hba *phba)2588{2589 struct pdu_data_out *pdata_out;2590 struct pdu_nop_out *pnop_out;2591 struct be_mem_descriptor *mem_descr;2592 2593 mem_descr = phba->init_mem;2594 mem_descr += ISCSI_MEM_GLOBAL_HEADER;2595 pdata_out =2596 (struct pdu_data_out *)mem_descr->mem_array[0].virtual_address;2597 memset(pdata_out, 0, BE_ISCSI_PDU_HEADER_SIZE);2598 2599 AMAP_SET_BITS(struct amap_pdu_data_out, opcode, pdata_out,2600 IIOC_SCSI_DATA);2601 2602 pnop_out =2603 (struct pdu_nop_out *)((unsigned char *)mem_descr->mem_array[0].2604 virtual_address + BE_ISCSI_PDU_HEADER_SIZE);2605 2606 memset(pnop_out, 0, BE_ISCSI_PDU_HEADER_SIZE);2607 AMAP_SET_BITS(struct amap_pdu_nop_out, ttt, pnop_out, 0xFFFFFFFF);2608 AMAP_SET_BITS(struct amap_pdu_nop_out, f_bit, pnop_out, 1);2609 AMAP_SET_BITS(struct amap_pdu_nop_out, i_bit, pnop_out, 0);2610}2611 2612static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba)2613{2614 struct be_mem_descriptor *mem_descr_wrbh, *mem_descr_wrb;2615 struct hwi_context_memory *phwi_ctxt;2616 struct wrb_handle *pwrb_handle = NULL;2617 struct hwi_controller *phwi_ctrlr;2618 struct hwi_wrb_context *pwrb_context;2619 struct iscsi_wrb *pwrb = NULL;2620 unsigned int num_cxn_wrbh = 0;2621 unsigned int num_cxn_wrb = 0, j, idx = 0, index;2622 2623 mem_descr_wrbh = phba->init_mem;2624 mem_descr_wrbh += HWI_MEM_WRBH;2625 2626 mem_descr_wrb = phba->init_mem;2627 mem_descr_wrb += HWI_MEM_WRB;2628 phwi_ctrlr = phba->phwi_ctrlr;2629 2630 /* Allocate memory for WRBQ */2631 phwi_ctxt = phwi_ctrlr->phwi_ctxt;2632 phwi_ctxt->be_wrbq = kcalloc(phba->params.cxns_per_ctrl,2633 sizeof(struct be_queue_info),2634 GFP_KERNEL);2635 if (!phwi_ctxt->be_wrbq) {2636 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,2637 "BM_%d : WRBQ Mem Alloc Failed\n");2638 return -ENOMEM;2639 }2640 2641 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {2642 pwrb_context = &phwi_ctrlr->wrb_context[index];2643 pwrb_context->pwrb_handle_base =2644 kcalloc(phba->params.wrbs_per_cxn,2645 sizeof(struct wrb_handle *),2646 GFP_KERNEL);2647 if (!pwrb_context->pwrb_handle_base) {2648 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,2649 "BM_%d : Mem Alloc Failed. Failing to load\n");2650 goto init_wrb_hndl_failed;2651 }2652 pwrb_context->pwrb_handle_basestd =2653 kcalloc(phba->params.wrbs_per_cxn,2654 sizeof(struct wrb_handle *),2655 GFP_KERNEL);2656 if (!pwrb_context->pwrb_handle_basestd) {2657 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,2658 "BM_%d : Mem Alloc Failed. Failing to load\n");2659 goto init_wrb_hndl_failed;2660 }2661 if (!num_cxn_wrbh) {2662 pwrb_handle =2663 mem_descr_wrbh->mem_array[idx].virtual_address;2664 num_cxn_wrbh = ((mem_descr_wrbh->mem_array[idx].size) /2665 ((sizeof(struct wrb_handle)) *2666 phba->params.wrbs_per_cxn));2667 idx++;2668 }2669 pwrb_context->alloc_index = 0;2670 pwrb_context->wrb_handles_available = 0;2671 pwrb_context->free_index = 0;2672 2673 if (num_cxn_wrbh) {2674 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {2675 pwrb_context->pwrb_handle_base[j] = pwrb_handle;2676 pwrb_context->pwrb_handle_basestd[j] =2677 pwrb_handle;2678 pwrb_context->wrb_handles_available++;2679 pwrb_handle->wrb_index = j;2680 pwrb_handle++;2681 }2682 num_cxn_wrbh--;2683 }2684 spin_lock_init(&pwrb_context->wrb_lock);2685 }2686 idx = 0;2687 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {2688 pwrb_context = &phwi_ctrlr->wrb_context[index];2689 if (!num_cxn_wrb) {2690 pwrb = mem_descr_wrb->mem_array[idx].virtual_address;2691 num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) /2692 ((sizeof(struct iscsi_wrb) *2693 phba->params.wrbs_per_cxn));2694 idx++;2695 }2696 2697 if (num_cxn_wrb) {2698 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {2699 pwrb_handle = pwrb_context->pwrb_handle_base[j];2700 pwrb_handle->pwrb = pwrb;2701 pwrb++;2702 }2703 num_cxn_wrb--;2704 }2705 }2706 return 0;2707init_wrb_hndl_failed:2708 for (j = index; j > 0; j--) {2709 pwrb_context = &phwi_ctrlr->wrb_context[j];2710 kfree(pwrb_context->pwrb_handle_base);2711 kfree(pwrb_context->pwrb_handle_basestd);2712 }2713 kfree(phwi_ctxt->be_wrbq);2714 return -ENOMEM;2715}2716 2717static int hwi_init_async_pdu_ctx(struct beiscsi_hba *phba)2718{2719 uint8_t ulp_num;2720 struct hwi_controller *phwi_ctrlr;2721 struct hba_parameters *p = &phba->params;2722 struct hd_async_context *pasync_ctx;2723 struct hd_async_handle *pasync_header_h, *pasync_data_h;2724 unsigned int index, idx, num_per_mem, num_async_data;2725 struct be_mem_descriptor *mem_descr;2726 2727 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {2728 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {2729 /* get async_ctx for each ULP */2730 mem_descr = (struct be_mem_descriptor *)phba->init_mem;2731 mem_descr += (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +2732 (ulp_num * MEM_DESCR_OFFSET));2733 2734 phwi_ctrlr = phba->phwi_ctrlr;2735 phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num] =2736 (struct hd_async_context *)2737 mem_descr->mem_array[0].virtual_address;2738 2739 pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num];2740 memset(pasync_ctx, 0, sizeof(*pasync_ctx));2741 2742 pasync_ctx->async_entry =2743 (struct hd_async_entry *)2744 ((long unsigned int)pasync_ctx +2745 sizeof(struct hd_async_context));2746 2747 pasync_ctx->num_entries = BEISCSI_ASYNC_HDQ_SIZE(phba,2748 ulp_num);2749 /* setup header buffers */2750 mem_descr = (struct be_mem_descriptor *)phba->init_mem;2751 mem_descr += HWI_MEM_ASYNC_HEADER_BUF_ULP0 +2752 (ulp_num * MEM_DESCR_OFFSET);2753 if (mem_descr->mem_array[0].virtual_address) {2754 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,2755 "BM_%d : hwi_init_async_pdu_ctx"2756 " HWI_MEM_ASYNC_HEADER_BUF_ULP%d va=%p\n",2757 ulp_num,2758 mem_descr->mem_array[0].2759 virtual_address);2760 } else2761 beiscsi_log(phba, KERN_WARNING,2762 BEISCSI_LOG_INIT,2763 "BM_%d : No Virtual address for ULP : %d\n",2764 ulp_num);2765 2766 pasync_ctx->async_header.pi = 0;2767 pasync_ctx->async_header.buffer_size = p->defpdu_hdr_sz;2768 pasync_ctx->async_header.va_base =2769 mem_descr->mem_array[0].virtual_address;2770 2771 pasync_ctx->async_header.pa_base.u.a64.address =2772 mem_descr->mem_array[0].2773 bus_address.u.a64.address;2774 2775 /* setup header buffer sgls */2776 mem_descr = (struct be_mem_descriptor *)phba->init_mem;2777 mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +2778 (ulp_num * MEM_DESCR_OFFSET);2779 if (mem_descr->mem_array[0].virtual_address) {2780 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,2781 "BM_%d : hwi_init_async_pdu_ctx"2782 " HWI_MEM_ASYNC_HEADER_RING_ULP%d va=%p\n",2783 ulp_num,2784 mem_descr->mem_array[0].2785 virtual_address);2786 } else2787 beiscsi_log(phba, KERN_WARNING,2788 BEISCSI_LOG_INIT,2789 "BM_%d : No Virtual address for ULP : %d\n",2790 ulp_num);2791 2792 pasync_ctx->async_header.ring_base =2793 mem_descr->mem_array[0].virtual_address;2794 2795 /* setup header buffer handles */2796 mem_descr = (struct be_mem_descriptor *)phba->init_mem;2797 mem_descr += HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +2798 (ulp_num * MEM_DESCR_OFFSET);2799 if (mem_descr->mem_array[0].virtual_address) {2800 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,2801 "BM_%d : hwi_init_async_pdu_ctx"2802 " HWI_MEM_ASYNC_HEADER_HANDLE_ULP%d va=%p\n",2803 ulp_num,2804 mem_descr->mem_array[0].2805 virtual_address);2806 } else2807 beiscsi_log(phba, KERN_WARNING,2808 BEISCSI_LOG_INIT,2809 "BM_%d : No Virtual address for ULP : %d\n",2810 ulp_num);2811 2812 pasync_ctx->async_header.handle_base =2813 mem_descr->mem_array[0].virtual_address;2814 2815 /* setup data buffer sgls */2816 mem_descr = (struct be_mem_descriptor *)phba->init_mem;2817 mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +2818 (ulp_num * MEM_DESCR_OFFSET);2819 if (mem_descr->mem_array[0].virtual_address) {2820 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,2821 "BM_%d : hwi_init_async_pdu_ctx"2822 " HWI_MEM_ASYNC_DATA_RING_ULP%d va=%p\n",2823 ulp_num,2824 mem_descr->mem_array[0].2825 virtual_address);2826 } else2827 beiscsi_log(phba, KERN_WARNING,2828 BEISCSI_LOG_INIT,2829 "BM_%d : No Virtual address for ULP : %d\n",2830 ulp_num);2831 2832 pasync_ctx->async_data.ring_base =2833 mem_descr->mem_array[0].virtual_address;2834 2835 /* setup data buffer handles */2836 mem_descr = (struct be_mem_descriptor *)phba->init_mem;2837 mem_descr += HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +2838 (ulp_num * MEM_DESCR_OFFSET);2839 if (!mem_descr->mem_array[0].virtual_address)2840 beiscsi_log(phba, KERN_WARNING,2841 BEISCSI_LOG_INIT,2842 "BM_%d : No Virtual address for ULP : %d\n",2843 ulp_num);2844 2845 pasync_ctx->async_data.handle_base =2846 mem_descr->mem_array[0].virtual_address;2847 2848 pasync_header_h =2849 (struct hd_async_handle *)2850 pasync_ctx->async_header.handle_base;2851 pasync_data_h =2852 (struct hd_async_handle *)2853 pasync_ctx->async_data.handle_base;2854 2855 /* setup data buffers */2856 mem_descr = (struct be_mem_descriptor *)phba->init_mem;2857 mem_descr += HWI_MEM_ASYNC_DATA_BUF_ULP0 +2858 (ulp_num * MEM_DESCR_OFFSET);2859 if (mem_descr->mem_array[0].virtual_address) {2860 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,2861 "BM_%d : hwi_init_async_pdu_ctx"2862 " HWI_MEM_ASYNC_DATA_BUF_ULP%d va=%p\n",2863 ulp_num,2864 mem_descr->mem_array[0].2865 virtual_address);2866 } else2867 beiscsi_log(phba, KERN_WARNING,2868 BEISCSI_LOG_INIT,2869 "BM_%d : No Virtual address for ULP : %d\n",2870 ulp_num);2871 2872 idx = 0;2873 pasync_ctx->async_data.pi = 0;2874 pasync_ctx->async_data.buffer_size = p->defpdu_data_sz;2875 pasync_ctx->async_data.va_base =2876 mem_descr->mem_array[idx].virtual_address;2877 pasync_ctx->async_data.pa_base.u.a64.address =2878 mem_descr->mem_array[idx].2879 bus_address.u.a64.address;2880 2881 num_async_data = ((mem_descr->mem_array[idx].size) /2882 phba->params.defpdu_data_sz);2883 num_per_mem = 0;2884 2885 for (index = 0; index < BEISCSI_ASYNC_HDQ_SIZE2886 (phba, ulp_num); index++) {2887 pasync_header_h->cri = -1;2888 pasync_header_h->is_header = 1;2889 pasync_header_h->index = index;2890 INIT_LIST_HEAD(&pasync_header_h->link);2891 pasync_header_h->pbuffer =2892 (void *)((unsigned long)2893 (pasync_ctx->2894 async_header.va_base) +2895 (p->defpdu_hdr_sz * index));2896 2897 pasync_header_h->pa.u.a64.address =2898 pasync_ctx->async_header.pa_base.u.a64.2899 address + (p->defpdu_hdr_sz * index);2900 2901 pasync_ctx->async_entry[index].header =2902 pasync_header_h;2903 pasync_header_h++;2904 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].2905 wq.list);2906 2907 pasync_data_h->cri = -1;2908 pasync_data_h->is_header = 0;2909 pasync_data_h->index = index;2910 INIT_LIST_HEAD(&pasync_data_h->link);2911 2912 if (!num_async_data) {2913 num_per_mem = 0;2914 idx++;2915 pasync_ctx->async_data.va_base =2916 mem_descr->mem_array[idx].2917 virtual_address;2918 pasync_ctx->async_data.pa_base.u.2919 a64.address =2920 mem_descr->mem_array[idx].2921 bus_address.u.a64.address;2922 num_async_data =2923 ((mem_descr->mem_array[idx].2924 size) /2925 phba->params.defpdu_data_sz);2926 }2927 pasync_data_h->pbuffer =2928 (void *)((unsigned long)2929 (pasync_ctx->async_data.va_base) +2930 (p->defpdu_data_sz * num_per_mem));2931 2932 pasync_data_h->pa.u.a64.address =2933 pasync_ctx->async_data.pa_base.u.a64.2934 address + (p->defpdu_data_sz *2935 num_per_mem);2936 num_per_mem++;2937 num_async_data--;2938 2939 pasync_ctx->async_entry[index].data =2940 pasync_data_h;2941 pasync_data_h++;2942 }2943 }2944 }2945 2946 return 0;2947}2948 2949static int2950be_sgl_create_contiguous(void *virtual_address,2951 u64 physical_address, u32 length,2952 struct be_dma_mem *sgl)2953{2954 WARN_ON(!virtual_address);2955 WARN_ON(!physical_address);2956 WARN_ON(!length);2957 WARN_ON(!sgl);2958 2959 sgl->va = virtual_address;2960 sgl->dma = (unsigned long)physical_address;2961 sgl->size = length;2962 2963 return 0;2964}2965 2966static void be_sgl_destroy_contiguous(struct be_dma_mem *sgl)2967{2968 memset(sgl, 0, sizeof(*sgl));2969}2970 2971static void2972hwi_build_be_sgl_arr(struct beiscsi_hba *phba,2973 struct mem_array *pmem, struct be_dma_mem *sgl)2974{2975 if (sgl->va)2976 be_sgl_destroy_contiguous(sgl);2977 2978 be_sgl_create_contiguous(pmem->virtual_address,2979 pmem->bus_address.u.a64.address,2980 pmem->size, sgl);2981}2982 2983static void2984hwi_build_be_sgl_by_offset(struct beiscsi_hba *phba,2985 struct mem_array *pmem, struct be_dma_mem *sgl)2986{2987 if (sgl->va)2988 be_sgl_destroy_contiguous(sgl);2989 2990 be_sgl_create_contiguous((unsigned char *)pmem->virtual_address,2991 pmem->bus_address.u.a64.address,2992 pmem->size, sgl);2993}2994 2995static int be_fill_queue(struct be_queue_info *q,2996 u16 len, u16 entry_size, void *vaddress)2997{2998 struct be_dma_mem *mem = &q->dma_mem;2999 3000 memset(q, 0, sizeof(*q));3001 q->len = len;3002 q->entry_size = entry_size;3003 mem->size = len * entry_size;3004 mem->va = vaddress;3005 if (!mem->va)3006 return -ENOMEM;3007 memset(mem->va, 0, mem->size);3008 return 0;3009}3010 3011static int beiscsi_create_eqs(struct beiscsi_hba *phba,3012 struct hwi_context_memory *phwi_context)3013{3014 int ret = -ENOMEM, eq_for_mcc;3015 unsigned int i, num_eq_pages;3016 struct be_queue_info *eq;3017 struct be_dma_mem *mem;3018 void *eq_vaddress;3019 dma_addr_t paddr;3020 3021 num_eq_pages = PAGES_REQUIRED(phba->params.num_eq_entries *3022 sizeof(struct be_eq_entry));3023 3024 if (phba->pcidev->msix_enabled)3025 eq_for_mcc = 1;3026 else3027 eq_for_mcc = 0;3028 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {3029 eq = &phwi_context->be_eq[i].q;3030 mem = &eq->dma_mem;3031 phwi_context->be_eq[i].phba = phba;3032 eq_vaddress = dma_alloc_coherent(&phba->pcidev->dev,3033 num_eq_pages * PAGE_SIZE,3034 &paddr, GFP_KERNEL);3035 if (!eq_vaddress) {3036 ret = -ENOMEM;3037 goto create_eq_error;3038 }3039 3040 mem->va = eq_vaddress;3041 ret = be_fill_queue(eq, phba->params.num_eq_entries,3042 sizeof(struct be_eq_entry), eq_vaddress);3043 if (ret) {3044 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3045 "BM_%d : be_fill_queue Failed for EQ\n");3046 goto create_eq_error;3047 }3048 3049 mem->dma = paddr;3050 ret = beiscsi_cmd_eq_create(&phba->ctrl, eq,3051 BEISCSI_EQ_DELAY_DEF);3052 if (ret) {3053 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3054 "BM_%d : beiscsi_cmd_eq_create Failed for EQ\n");3055 goto create_eq_error;3056 }3057 3058 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3059 "BM_%d : eqid = %d\n",3060 phwi_context->be_eq[i].q.id);3061 }3062 return 0;3063 3064create_eq_error:3065 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {3066 eq = &phwi_context->be_eq[i].q;3067 mem = &eq->dma_mem;3068 if (mem->va)3069 dma_free_coherent(&phba->pcidev->dev, num_eq_pages3070 * PAGE_SIZE,3071 mem->va, mem->dma);3072 }3073 return ret;3074}3075 3076static int beiscsi_create_cqs(struct beiscsi_hba *phba,3077 struct hwi_context_memory *phwi_context)3078{3079 unsigned int i, num_cq_pages;3080 struct be_queue_info *cq, *eq;3081 struct be_dma_mem *mem;3082 struct be_eq_obj *pbe_eq;3083 void *cq_vaddress;3084 int ret = -ENOMEM;3085 dma_addr_t paddr;3086 3087 num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries *3088 sizeof(struct sol_cqe));3089 3090 for (i = 0; i < phba->num_cpus; i++) {3091 cq = &phwi_context->be_cq[i];3092 eq = &phwi_context->be_eq[i].q;3093 pbe_eq = &phwi_context->be_eq[i];3094 pbe_eq->cq = cq;3095 pbe_eq->phba = phba;3096 mem = &cq->dma_mem;3097 cq_vaddress = dma_alloc_coherent(&phba->pcidev->dev,3098 num_cq_pages * PAGE_SIZE,3099 &paddr, GFP_KERNEL);3100 if (!cq_vaddress) {3101 ret = -ENOMEM;3102 goto create_cq_error;3103 }3104 3105 ret = be_fill_queue(cq, phba->params.num_cq_entries,3106 sizeof(struct sol_cqe), cq_vaddress);3107 if (ret) {3108 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3109 "BM_%d : be_fill_queue Failed for ISCSI CQ\n");3110 goto create_cq_error;3111 }3112 3113 mem->dma = paddr;3114 ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false,3115 false, 0);3116 if (ret) {3117 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3118 "BM_%d : beiscsi_cmd_eq_create Failed for ISCSI CQ\n");3119 goto create_cq_error;3120 }3121 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3122 "BM_%d : iscsi cq_id is %d for eq_id %d\n"3123 "iSCSI CQ CREATED\n", cq->id, eq->id);3124 }3125 return 0;3126 3127create_cq_error:3128 for (i = 0; i < phba->num_cpus; i++) {3129 cq = &phwi_context->be_cq[i];3130 mem = &cq->dma_mem;3131 if (mem->va)3132 dma_free_coherent(&phba->pcidev->dev, num_cq_pages3133 * PAGE_SIZE,3134 mem->va, mem->dma);3135 }3136 return ret;3137}3138 3139static int3140beiscsi_create_def_hdr(struct beiscsi_hba *phba,3141 struct hwi_context_memory *phwi_context,3142 struct hwi_controller *phwi_ctrlr,3143 unsigned int def_pdu_ring_sz, uint8_t ulp_num)3144{3145 unsigned int idx;3146 int ret;3147 struct be_queue_info *dq, *cq;3148 struct be_dma_mem *mem;3149 struct be_mem_descriptor *mem_descr;3150 void *dq_vaddress;3151 3152 idx = 0;3153 dq = &phwi_context->be_def_hdrq[ulp_num];3154 cq = &phwi_context->be_cq[0];3155 mem = &dq->dma_mem;3156 mem_descr = phba->init_mem;3157 mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +3158 (ulp_num * MEM_DESCR_OFFSET);3159 dq_vaddress = mem_descr->mem_array[idx].virtual_address;3160 ret = be_fill_queue(dq, mem_descr->mem_array[0].size /3161 sizeof(struct phys_addr),3162 sizeof(struct phys_addr), dq_vaddress);3163 if (ret) {3164 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3165 "BM_%d : be_fill_queue Failed for DEF PDU HDR on ULP : %d\n",3166 ulp_num);3167 3168 return ret;3169 }3170 mem->dma = (unsigned long)mem_descr->mem_array[idx].3171 bus_address.u.a64.address;3172 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dq,3173 def_pdu_ring_sz,3174 phba->params.defpdu_hdr_sz,3175 BEISCSI_DEFQ_HDR, ulp_num);3176 if (ret) {3177 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3178 "BM_%d : be_cmd_create_default_pdu_queue Failed DEFHDR on ULP : %d\n",3179 ulp_num);3180 3181 return ret;3182 }3183 3184 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3185 "BM_%d : iscsi hdr def pdu id for ULP : %d is %d\n",3186 ulp_num,3187 phwi_context->be_def_hdrq[ulp_num].id);3188 return 0;3189}3190 3191static int3192beiscsi_create_def_data(struct beiscsi_hba *phba,3193 struct hwi_context_memory *phwi_context,3194 struct hwi_controller *phwi_ctrlr,3195 unsigned int def_pdu_ring_sz, uint8_t ulp_num)3196{3197 unsigned int idx;3198 int ret;3199 struct be_queue_info *dataq, *cq;3200 struct be_dma_mem *mem;3201 struct be_mem_descriptor *mem_descr;3202 void *dq_vaddress;3203 3204 idx = 0;3205 dataq = &phwi_context->be_def_dataq[ulp_num];3206 cq = &phwi_context->be_cq[0];3207 mem = &dataq->dma_mem;3208 mem_descr = phba->init_mem;3209 mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +3210 (ulp_num * MEM_DESCR_OFFSET);3211 dq_vaddress = mem_descr->mem_array[idx].virtual_address;3212 ret = be_fill_queue(dataq, mem_descr->mem_array[0].size /3213 sizeof(struct phys_addr),3214 sizeof(struct phys_addr), dq_vaddress);3215 if (ret) {3216 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3217 "BM_%d : be_fill_queue Failed for DEF PDU "3218 "DATA on ULP : %d\n",3219 ulp_num);3220 3221 return ret;3222 }3223 mem->dma = (unsigned long)mem_descr->mem_array[idx].3224 bus_address.u.a64.address;3225 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dataq,3226 def_pdu_ring_sz,3227 phba->params.defpdu_data_sz,3228 BEISCSI_DEFQ_DATA, ulp_num);3229 if (ret) {3230 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3231 "BM_%d be_cmd_create_default_pdu_queue"3232 " Failed for DEF PDU DATA on ULP : %d\n",3233 ulp_num);3234 return ret;3235 }3236 3237 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3238 "BM_%d : iscsi def data id on ULP : %d is %d\n",3239 ulp_num,3240 phwi_context->be_def_dataq[ulp_num].id);3241 3242 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3243 "BM_%d : DEFAULT PDU DATA RING CREATED on ULP : %d\n",3244 ulp_num);3245 return 0;3246}3247 3248 3249static int3250beiscsi_post_template_hdr(struct beiscsi_hba *phba)3251{3252 struct be_mem_descriptor *mem_descr;3253 struct mem_array *pm_arr;3254 struct be_dma_mem sgl;3255 int status, ulp_num;3256 3257 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {3258 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {3259 mem_descr = (struct be_mem_descriptor *)phba->init_mem;3260 mem_descr += HWI_MEM_TEMPLATE_HDR_ULP0 +3261 (ulp_num * MEM_DESCR_OFFSET);3262 pm_arr = mem_descr->mem_array;3263 3264 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);3265 status = be_cmd_iscsi_post_template_hdr(3266 &phba->ctrl, &sgl);3267 3268 if (status != 0) {3269 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3270 "BM_%d : Post Template HDR Failed for "3271 "ULP_%d\n", ulp_num);3272 return status;3273 }3274 3275 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3276 "BM_%d : Template HDR Pages Posted for "3277 "ULP_%d\n", ulp_num);3278 }3279 }3280 return 0;3281}3282 3283static int3284beiscsi_post_pages(struct beiscsi_hba *phba)3285{3286 struct be_mem_descriptor *mem_descr;3287 struct mem_array *pm_arr;3288 unsigned int page_offset, i;3289 struct be_dma_mem sgl;3290 int status, ulp_num = 0;3291 3292 mem_descr = phba->init_mem;3293 mem_descr += HWI_MEM_SGE;3294 pm_arr = mem_descr->mem_array;3295 3296 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)3297 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))3298 break;3299 3300 page_offset = (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io *3301 phba->fw_config.iscsi_icd_start[ulp_num]) / PAGE_SIZE;3302 for (i = 0; i < mem_descr->num_elements; i++) {3303 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);3304 status = be_cmd_iscsi_post_sgl_pages(&phba->ctrl, &sgl,3305 page_offset,3306 (pm_arr->size / PAGE_SIZE));3307 page_offset += pm_arr->size / PAGE_SIZE;3308 if (status != 0) {3309 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3310 "BM_%d : post sgl failed.\n");3311 return status;3312 }3313 pm_arr++;3314 }3315 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3316 "BM_%d : POSTED PAGES\n");3317 return 0;3318}3319 3320static void be_queue_free(struct beiscsi_hba *phba, struct be_queue_info *q)3321{3322 struct be_dma_mem *mem = &q->dma_mem;3323 if (mem->va) {3324 dma_free_coherent(&phba->pcidev->dev, mem->size,3325 mem->va, mem->dma);3326 mem->va = NULL;3327 }3328}3329 3330static int be_queue_alloc(struct beiscsi_hba *phba, struct be_queue_info *q,3331 u16 len, u16 entry_size)3332{3333 struct be_dma_mem *mem = &q->dma_mem;3334 3335 memset(q, 0, sizeof(*q));3336 q->len = len;3337 q->entry_size = entry_size;3338 mem->size = len * entry_size;3339 mem->va = dma_alloc_coherent(&phba->pcidev->dev, mem->size, &mem->dma,3340 GFP_KERNEL);3341 if (!mem->va)3342 return -ENOMEM;3343 return 0;3344}3345 3346static int3347beiscsi_create_wrb_rings(struct beiscsi_hba *phba,3348 struct hwi_context_memory *phwi_context,3349 struct hwi_controller *phwi_ctrlr)3350{3351 unsigned int num_wrb_rings;3352 u64 pa_addr_lo;3353 unsigned int idx, num, i, ulp_num;3354 struct mem_array *pwrb_arr;3355 void *wrb_vaddr;3356 struct be_dma_mem sgl;3357 struct be_mem_descriptor *mem_descr;3358 struct hwi_wrb_context *pwrb_context;3359 int status;3360 uint8_t ulp_count = 0, ulp_base_num = 0;3361 uint16_t cid_count_ulp[BEISCSI_ULP_COUNT] = { 0 };3362 3363 idx = 0;3364 mem_descr = phba->init_mem;3365 mem_descr += HWI_MEM_WRB;3366 pwrb_arr = kmalloc_array(phba->params.cxns_per_ctrl,3367 sizeof(*pwrb_arr),3368 GFP_KERNEL);3369 if (!pwrb_arr) {3370 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3371 "BM_%d : Memory alloc failed in create wrb ring.\n");3372 return -ENOMEM;3373 }3374 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;3375 pa_addr_lo = mem_descr->mem_array[idx].bus_address.u.a64.address;3376 num_wrb_rings = mem_descr->mem_array[idx].size /3377 (phba->params.wrbs_per_cxn * sizeof(struct iscsi_wrb));3378 3379 for (num = 0; num < phba->params.cxns_per_ctrl; num++) {3380 if (num_wrb_rings) {3381 pwrb_arr[num].virtual_address = wrb_vaddr;3382 pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo;3383 pwrb_arr[num].size = phba->params.wrbs_per_cxn *3384 sizeof(struct iscsi_wrb);3385 wrb_vaddr += pwrb_arr[num].size;3386 pa_addr_lo += pwrb_arr[num].size;3387 num_wrb_rings--;3388 } else {3389 idx++;3390 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;3391 pa_addr_lo = mem_descr->mem_array[idx].3392 bus_address.u.a64.address;3393 num_wrb_rings = mem_descr->mem_array[idx].size /3394 (phba->params.wrbs_per_cxn *3395 sizeof(struct iscsi_wrb));3396 pwrb_arr[num].virtual_address = wrb_vaddr;3397 pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo;3398 pwrb_arr[num].size = phba->params.wrbs_per_cxn *3399 sizeof(struct iscsi_wrb);3400 wrb_vaddr += pwrb_arr[num].size;3401 pa_addr_lo += pwrb_arr[num].size;3402 num_wrb_rings--;3403 }3404 }3405 3406 /* Get the ULP Count */3407 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)3408 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {3409 ulp_count++;3410 ulp_base_num = ulp_num;3411 cid_count_ulp[ulp_num] =3412 BEISCSI_GET_CID_COUNT(phba, ulp_num);3413 }3414 3415 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {3416 if (ulp_count > 1) {3417 ulp_base_num = (ulp_base_num + 1) % BEISCSI_ULP_COUNT;3418 3419 if (!cid_count_ulp[ulp_base_num])3420 ulp_base_num = (ulp_base_num + 1) %3421 BEISCSI_ULP_COUNT;3422 3423 cid_count_ulp[ulp_base_num]--;3424 }3425 3426 3427 hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl);3428 status = be_cmd_wrbq_create(&phba->ctrl, &sgl,3429 &phwi_context->be_wrbq[i],3430 &phwi_ctrlr->wrb_context[i],3431 ulp_base_num);3432 if (status != 0) {3433 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3434 "BM_%d : wrbq create failed.");3435 kfree(pwrb_arr);3436 return status;3437 }3438 pwrb_context = &phwi_ctrlr->wrb_context[i];3439 BE_SET_CID_TO_CRI(i, pwrb_context->cid);3440 }3441 kfree(pwrb_arr);3442 return 0;3443}3444 3445static void free_wrb_handles(struct beiscsi_hba *phba)3446{3447 unsigned int index;3448 struct hwi_controller *phwi_ctrlr;3449 struct hwi_wrb_context *pwrb_context;3450 3451 phwi_ctrlr = phba->phwi_ctrlr;3452 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {3453 pwrb_context = &phwi_ctrlr->wrb_context[index];3454 kfree(pwrb_context->pwrb_handle_base);3455 kfree(pwrb_context->pwrb_handle_basestd);3456 }3457}3458 3459static void be_mcc_queues_destroy(struct beiscsi_hba *phba)3460{3461 struct be_ctrl_info *ctrl = &phba->ctrl;3462 struct be_dma_mem *ptag_mem;3463 struct be_queue_info *q;3464 int i, tag;3465 3466 q = &phba->ctrl.mcc_obj.q;3467 for (i = 0; i < MAX_MCC_CMD; i++) {3468 tag = i + 1;3469 if (!test_bit(MCC_TAG_STATE_RUNNING,3470 &ctrl->ptag_state[tag].tag_state))3471 continue;3472 3473 if (test_bit(MCC_TAG_STATE_TIMEOUT,3474 &ctrl->ptag_state[tag].tag_state)) {3475 ptag_mem = &ctrl->ptag_state[tag].tag_mem_state;3476 if (ptag_mem->size) {3477 dma_free_coherent(&ctrl->pdev->dev,3478 ptag_mem->size,3479 ptag_mem->va,3480 ptag_mem->dma);3481 ptag_mem->size = 0;3482 }3483 continue;3484 }3485 /**3486 * If MCC is still active and waiting then wake up the process.3487 * We are here only because port is going offline. The process3488 * sees that (BEISCSI_HBA_ONLINE is cleared) and EIO error is3489 * returned for the operation and allocated memory cleaned up.3490 */3491 if (waitqueue_active(&ctrl->mcc_wait[tag])) {3492 ctrl->mcc_tag_status[tag] = MCC_STATUS_FAILED;3493 ctrl->mcc_tag_status[tag] |= CQE_VALID_MASK;3494 wake_up_interruptible(&ctrl->mcc_wait[tag]);3495 /*3496 * Control tag info gets reinitialized in enable3497 * so wait for the process to clear running state.3498 */3499 while (test_bit(MCC_TAG_STATE_RUNNING,3500 &ctrl->ptag_state[tag].tag_state))3501 schedule_timeout_uninterruptible(HZ);3502 }3503 /**3504 * For MCC with tag_states MCC_TAG_STATE_ASYNC and3505 * MCC_TAG_STATE_IGNORE nothing needs to done.3506 */3507 }3508 if (q->created) {3509 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_MCCQ);3510 be_queue_free(phba, q);3511 }3512 3513 q = &phba->ctrl.mcc_obj.cq;3514 if (q->created) {3515 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);3516 be_queue_free(phba, q);3517 }3518}3519 3520static int be_mcc_queues_create(struct beiscsi_hba *phba,3521 struct hwi_context_memory *phwi_context)3522{3523 struct be_queue_info *q, *cq;3524 struct be_ctrl_info *ctrl = &phba->ctrl;3525 3526 /* Alloc MCC compl queue */3527 cq = &phba->ctrl.mcc_obj.cq;3528 if (be_queue_alloc(phba, cq, MCC_CQ_LEN,3529 sizeof(struct be_mcc_compl)))3530 goto err;3531 /* Ask BE to create MCC compl queue; */3532 if (phba->pcidev->msix_enabled) {3533 if (beiscsi_cmd_cq_create(ctrl, cq,3534 &phwi_context->be_eq[phba->num_cpus].q,3535 false, true, 0))3536 goto mcc_cq_free;3537 } else {3538 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq[0].q,3539 false, true, 0))3540 goto mcc_cq_free;3541 }3542 3543 /* Alloc MCC queue */3544 q = &phba->ctrl.mcc_obj.q;3545 if (be_queue_alloc(phba, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))3546 goto mcc_cq_destroy;3547 3548 /* Ask BE to create MCC queue */3549 if (beiscsi_cmd_mccq_create(phba, q, cq))3550 goto mcc_q_free;3551 3552 return 0;3553 3554mcc_q_free:3555 be_queue_free(phba, q);3556mcc_cq_destroy:3557 beiscsi_cmd_q_destroy(ctrl, cq, QTYPE_CQ);3558mcc_cq_free:3559 be_queue_free(phba, cq);3560err:3561 return -ENOMEM;3562}3563 3564static void be2iscsi_enable_msix(struct beiscsi_hba *phba)3565{3566 int nvec = 1;3567 3568 switch (phba->generation) {3569 case BE_GEN2:3570 case BE_GEN3:3571 nvec = BEISCSI_MAX_NUM_CPUS + 1;3572 break;3573 case BE_GEN4:3574 nvec = phba->fw_config.eqid_count;3575 break;3576 default:3577 nvec = 2;3578 break;3579 }3580 3581 /* if eqid_count == 1 fall back to INTX */3582 if (enable_msix && nvec > 1) {3583 struct irq_affinity desc = { .post_vectors = 1 };3584 3585 if (pci_alloc_irq_vectors_affinity(phba->pcidev, 2, nvec,3586 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, &desc) < 0) {3587 phba->num_cpus = nvec - 1;3588 return;3589 }3590 }3591 3592 phba->num_cpus = 1;3593}3594 3595static void hwi_purge_eq(struct beiscsi_hba *phba)3596{3597 struct hwi_controller *phwi_ctrlr;3598 struct hwi_context_memory *phwi_context;3599 struct be_queue_info *eq;3600 struct be_eq_entry *eqe = NULL;3601 int i, eq_msix;3602 unsigned int num_processed;3603 3604 if (beiscsi_hba_in_error(phba))3605 return;3606 3607 phwi_ctrlr = phba->phwi_ctrlr;3608 phwi_context = phwi_ctrlr->phwi_ctxt;3609 if (phba->pcidev->msix_enabled)3610 eq_msix = 1;3611 else3612 eq_msix = 0;3613 3614 for (i = 0; i < (phba->num_cpus + eq_msix); i++) {3615 eq = &phwi_context->be_eq[i].q;3616 eqe = queue_tail_node(eq);3617 num_processed = 0;3618 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]3619 & EQE_VALID_MASK) {3620 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);3621 queue_tail_inc(eq);3622 eqe = queue_tail_node(eq);3623 num_processed++;3624 }3625 3626 if (num_processed)3627 hwi_ring_eq_db(phba, eq->id, 1, num_processed, 1, 1);3628 }3629}3630 3631static void hwi_cleanup_port(struct beiscsi_hba *phba)3632{3633 struct be_queue_info *q;3634 struct be_ctrl_info *ctrl = &phba->ctrl;3635 struct hwi_controller *phwi_ctrlr;3636 struct hwi_context_memory *phwi_context;3637 int i, eq_for_mcc, ulp_num;3638 3639 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)3640 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))3641 beiscsi_cmd_iscsi_cleanup(phba, ulp_num);3642 3643 /**3644 * Purge all EQ entries that may have been left out. This is to3645 * workaround a problem we've seen occasionally where driver gets an3646 * interrupt with EQ entry bit set after stopping the controller.3647 */3648 hwi_purge_eq(phba);3649 3650 phwi_ctrlr = phba->phwi_ctrlr;3651 phwi_context = phwi_ctrlr->phwi_ctxt;3652 3653 be_cmd_iscsi_remove_template_hdr(ctrl);3654 3655 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {3656 q = &phwi_context->be_wrbq[i];3657 if (q->created)3658 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_WRBQ);3659 }3660 kfree(phwi_context->be_wrbq);3661 free_wrb_handles(phba);3662 3663 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {3664 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {3665 3666 q = &phwi_context->be_def_hdrq[ulp_num];3667 if (q->created)3668 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);3669 3670 q = &phwi_context->be_def_dataq[ulp_num];3671 if (q->created)3672 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);3673 }3674 }3675 3676 beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);3677 3678 for (i = 0; i < (phba->num_cpus); i++) {3679 q = &phwi_context->be_cq[i];3680 if (q->created) {3681 be_queue_free(phba, q);3682 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);3683 }3684 }3685 3686 be_mcc_queues_destroy(phba);3687 if (phba->pcidev->msix_enabled)3688 eq_for_mcc = 1;3689 else3690 eq_for_mcc = 0;3691 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {3692 q = &phwi_context->be_eq[i].q;3693 if (q->created) {3694 be_queue_free(phba, q);3695 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ);3696 }3697 }3698 /* this ensures complete FW cleanup */3699 beiscsi_cmd_function_reset(phba);3700 /* last communication, indicate driver is unloading */3701 beiscsi_cmd_special_wrb(&phba->ctrl, 0);3702}3703 3704static int hwi_init_port(struct beiscsi_hba *phba)3705{3706 struct hwi_controller *phwi_ctrlr;3707 struct hwi_context_memory *phwi_context;3708 unsigned int def_pdu_ring_sz;3709 struct be_ctrl_info *ctrl = &phba->ctrl;3710 int status, ulp_num;3711 u16 nbufs;3712 3713 phwi_ctrlr = phba->phwi_ctrlr;3714 phwi_context = phwi_ctrlr->phwi_ctxt;3715 /* set port optic state to unknown */3716 phba->optic_state = 0xff;3717 3718 status = beiscsi_create_eqs(phba, phwi_context);3719 if (status != 0) {3720 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3721 "BM_%d : EQ not created\n");3722 goto error;3723 }3724 3725 status = be_mcc_queues_create(phba, phwi_context);3726 if (status != 0)3727 goto error;3728 3729 status = beiscsi_check_supported_fw(ctrl, phba);3730 if (status != 0) {3731 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3732 "BM_%d : Unsupported fw version\n");3733 goto error;3734 }3735 3736 status = beiscsi_create_cqs(phba, phwi_context);3737 if (status != 0) {3738 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3739 "BM_%d : CQ not created\n");3740 goto error;3741 }3742 3743 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {3744 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {3745 nbufs = phwi_context->pasync_ctx[ulp_num]->num_entries;3746 def_pdu_ring_sz = nbufs * sizeof(struct phys_addr);3747 3748 status = beiscsi_create_def_hdr(phba, phwi_context,3749 phwi_ctrlr,3750 def_pdu_ring_sz,3751 ulp_num);3752 if (status != 0) {3753 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3754 "BM_%d : Default Header not created for ULP : %d\n",3755 ulp_num);3756 goto error;3757 }3758 3759 status = beiscsi_create_def_data(phba, phwi_context,3760 phwi_ctrlr,3761 def_pdu_ring_sz,3762 ulp_num);3763 if (status != 0) {3764 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3765 "BM_%d : Default Data not created for ULP : %d\n",3766 ulp_num);3767 goto error;3768 }3769 /**3770 * Now that the default PDU rings have been created,3771 * let EP know about it.3772 */3773 beiscsi_hdq_post_handles(phba, BEISCSI_DEFQ_HDR,3774 ulp_num, nbufs);3775 beiscsi_hdq_post_handles(phba, BEISCSI_DEFQ_DATA,3776 ulp_num, nbufs);3777 }3778 }3779 3780 status = beiscsi_post_pages(phba);3781 if (status != 0) {3782 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3783 "BM_%d : Post SGL Pages Failed\n");3784 goto error;3785 }3786 3787 status = beiscsi_post_template_hdr(phba);3788 if (status != 0) {3789 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3790 "BM_%d : Template HDR Posting for CXN Failed\n");3791 }3792 3793 status = beiscsi_create_wrb_rings(phba, phwi_context, phwi_ctrlr);3794 if (status != 0) {3795 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3796 "BM_%d : WRB Rings not created\n");3797 goto error;3798 }3799 3800 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {3801 uint16_t async_arr_idx = 0;3802 3803 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {3804 uint16_t cri = 0;3805 struct hd_async_context *pasync_ctx;3806 3807 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(3808 phwi_ctrlr, ulp_num);3809 for (cri = 0; cri <3810 phba->params.cxns_per_ctrl; cri++) {3811 if (ulp_num == BEISCSI_GET_ULP_FROM_CRI3812 (phwi_ctrlr, cri))3813 pasync_ctx->cid_to_async_cri_map[3814 phwi_ctrlr->wrb_context[cri].cid] =3815 async_arr_idx++;3816 }3817 }3818 }3819 3820 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3821 "BM_%d : hwi_init_port success\n");3822 return 0;3823 3824error:3825 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3826 "BM_%d : hwi_init_port failed");3827 hwi_cleanup_port(phba);3828 return status;3829}3830 3831static int hwi_init_controller(struct beiscsi_hba *phba)3832{3833 struct hwi_controller *phwi_ctrlr;3834 3835 phwi_ctrlr = phba->phwi_ctrlr;3836 if (1 == phba->init_mem[HWI_MEM_ADDN_CONTEXT].num_elements) {3837 phwi_ctrlr->phwi_ctxt = (struct hwi_context_memory *)phba->3838 init_mem[HWI_MEM_ADDN_CONTEXT].mem_array[0].virtual_address;3839 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3840 "BM_%d : phwi_ctrlr->phwi_ctxt=%p\n",3841 phwi_ctrlr->phwi_ctxt);3842 } else {3843 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3844 "BM_%d : HWI_MEM_ADDN_CONTEXT is more "3845 "than one element.Failing to load\n");3846 return -ENOMEM;3847 }3848 3849 iscsi_init_global_templates(phba);3850 if (beiscsi_init_wrb_handle(phba))3851 return -ENOMEM;3852 3853 if (hwi_init_async_pdu_ctx(phba)) {3854 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3855 "BM_%d : hwi_init_async_pdu_ctx failed\n");3856 return -ENOMEM;3857 }3858 3859 if (hwi_init_port(phba) != 0) {3860 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3861 "BM_%d : hwi_init_controller failed\n");3862 3863 return -ENOMEM;3864 }3865 return 0;3866}3867 3868static void beiscsi_free_mem(struct beiscsi_hba *phba)3869{3870 struct be_mem_descriptor *mem_descr;3871 int i, j;3872 3873 mem_descr = phba->init_mem;3874 for (i = 0; i < SE_MEM_MAX; i++) {3875 for (j = mem_descr->num_elements; j > 0; j--) {3876 dma_free_coherent(&phba->pcidev->dev,3877 mem_descr->mem_array[j - 1].size,3878 mem_descr->mem_array[j - 1].virtual_address,3879 (unsigned long)mem_descr->mem_array[j - 1].3880 bus_address.u.a64.address);3881 }3882 3883 kfree(mem_descr->mem_array);3884 mem_descr++;3885 }3886 kfree(phba->init_mem);3887 kfree(phba->phwi_ctrlr->wrb_context);3888 kfree(phba->phwi_ctrlr);3889}3890 3891static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba)3892{3893 struct be_mem_descriptor *mem_descr_sglh, *mem_descr_sg;3894 struct sgl_handle *psgl_handle;3895 struct iscsi_sge *pfrag;3896 unsigned int arr_index, i, idx;3897 unsigned int ulp_icd_start, ulp_num = 0;3898 3899 phba->io_sgl_hndl_avbl = 0;3900 phba->eh_sgl_hndl_avbl = 0;3901 3902 mem_descr_sglh = phba->init_mem;3903 mem_descr_sglh += HWI_MEM_SGLH;3904 if (1 == mem_descr_sglh->num_elements) {3905 phba->io_sgl_hndl_base = kcalloc(phba->params.ios_per_ctrl,3906 sizeof(struct sgl_handle *),3907 GFP_KERNEL);3908 if (!phba->io_sgl_hndl_base) {3909 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3910 "BM_%d : Mem Alloc Failed. Failing to load\n");3911 return -ENOMEM;3912 }3913 phba->eh_sgl_hndl_base =3914 kcalloc(phba->params.icds_per_ctrl -3915 phba->params.ios_per_ctrl,3916 sizeof(struct sgl_handle *), GFP_KERNEL);3917 if (!phba->eh_sgl_hndl_base) {3918 kfree(phba->io_sgl_hndl_base);3919 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3920 "BM_%d : Mem Alloc Failed. Failing to load\n");3921 return -ENOMEM;3922 }3923 } else {3924 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,3925 "BM_%d : HWI_MEM_SGLH is more than one element."3926 "Failing to load\n");3927 return -ENOMEM;3928 }3929 3930 arr_index = 0;3931 idx = 0;3932 while (idx < mem_descr_sglh->num_elements) {3933 psgl_handle = mem_descr_sglh->mem_array[idx].virtual_address;3934 3935 for (i = 0; i < (mem_descr_sglh->mem_array[idx].size /3936 sizeof(struct sgl_handle)); i++) {3937 if (arr_index < phba->params.ios_per_ctrl) {3938 phba->io_sgl_hndl_base[arr_index] = psgl_handle;3939 phba->io_sgl_hndl_avbl++;3940 arr_index++;3941 } else {3942 phba->eh_sgl_hndl_base[arr_index -3943 phba->params.ios_per_ctrl] =3944 psgl_handle;3945 arr_index++;3946 phba->eh_sgl_hndl_avbl++;3947 }3948 psgl_handle++;3949 }3950 idx++;3951 }3952 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3953 "BM_%d : phba->io_sgl_hndl_avbl=%d "3954 "phba->eh_sgl_hndl_avbl=%d\n",3955 phba->io_sgl_hndl_avbl,3956 phba->eh_sgl_hndl_avbl);3957 3958 mem_descr_sg = phba->init_mem;3959 mem_descr_sg += HWI_MEM_SGE;3960 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,3961 "\n BM_%d : mem_descr_sg->num_elements=%d\n",3962 mem_descr_sg->num_elements);3963 3964 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)3965 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))3966 break;3967 3968 ulp_icd_start = phba->fw_config.iscsi_icd_start[ulp_num];3969 3970 arr_index = 0;3971 idx = 0;3972 while (idx < mem_descr_sg->num_elements) {3973 pfrag = mem_descr_sg->mem_array[idx].virtual_address;3974 3975 for (i = 0;3976 i < (mem_descr_sg->mem_array[idx].size) /3977 (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io);3978 i++) {3979 if (arr_index < phba->params.ios_per_ctrl)3980 psgl_handle = phba->io_sgl_hndl_base[arr_index];3981 else3982 psgl_handle = phba->eh_sgl_hndl_base[arr_index -3983 phba->params.ios_per_ctrl];3984 psgl_handle->pfrag = pfrag;3985 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, pfrag, 0);3986 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, pfrag, 0);3987 pfrag += phba->params.num_sge_per_io;3988 psgl_handle->sgl_index = ulp_icd_start + arr_index++;3989 }3990 idx++;3991 }3992 phba->io_sgl_free_index = 0;3993 phba->io_sgl_alloc_index = 0;3994 phba->eh_sgl_free_index = 0;3995 phba->eh_sgl_alloc_index = 0;3996 return 0;3997}3998 3999static int hba_setup_cid_tbls(struct beiscsi_hba *phba)4000{4001 int ret;4002 uint16_t i, ulp_num;4003 struct ulp_cid_info *ptr_cid_info = NULL;4004 4005 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {4006 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {4007 ptr_cid_info = kzalloc(sizeof(struct ulp_cid_info),4008 GFP_KERNEL);4009 4010 if (!ptr_cid_info) {4011 ret = -ENOMEM;4012 goto free_memory;4013 }4014 4015 /* Allocate memory for CID array */4016 ptr_cid_info->cid_array =4017 kcalloc(BEISCSI_GET_CID_COUNT(phba, ulp_num),4018 sizeof(*ptr_cid_info->cid_array),4019 GFP_KERNEL);4020 if (!ptr_cid_info->cid_array) {4021 kfree(ptr_cid_info);4022 ptr_cid_info = NULL;4023 ret = -ENOMEM;4024 4025 goto free_memory;4026 }4027 ptr_cid_info->avlbl_cids = BEISCSI_GET_CID_COUNT(4028 phba, ulp_num);4029 4030 /* Save the cid_info_array ptr */4031 phba->cid_array_info[ulp_num] = ptr_cid_info;4032 }4033 }4034 phba->ep_array = kcalloc(phba->params.cxns_per_ctrl,4035 sizeof(struct iscsi_endpoint *),4036 GFP_KERNEL);4037 if (!phba->ep_array) {4038 ret = -ENOMEM;4039 4040 goto free_memory;4041 }4042 4043 phba->conn_table = kcalloc(phba->params.cxns_per_ctrl,4044 sizeof(struct beiscsi_conn *),4045 GFP_KERNEL);4046 if (!phba->conn_table) {4047 kfree(phba->ep_array);4048 phba->ep_array = NULL;4049 ret = -ENOMEM;4050 4051 goto free_memory;4052 }4053 4054 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {4055 ulp_num = phba->phwi_ctrlr->wrb_context[i].ulp_num;4056 4057 ptr_cid_info = phba->cid_array_info[ulp_num];4058 ptr_cid_info->cid_array[ptr_cid_info->cid_alloc++] =4059 phba->phwi_ctrlr->wrb_context[i].cid;4060 4061 }4062 4063 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {4064 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {4065 ptr_cid_info = phba->cid_array_info[ulp_num];4066 4067 ptr_cid_info->cid_alloc = 0;4068 ptr_cid_info->cid_free = 0;4069 }4070 }4071 return 0;4072 4073free_memory:4074 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {4075 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {4076 ptr_cid_info = phba->cid_array_info[ulp_num];4077 4078 if (ptr_cid_info) {4079 kfree(ptr_cid_info->cid_array);4080 kfree(ptr_cid_info);4081 phba->cid_array_info[ulp_num] = NULL;4082 }4083 }4084 }4085 4086 return ret;4087}4088 4089static void hwi_enable_intr(struct beiscsi_hba *phba)4090{4091 struct be_ctrl_info *ctrl = &phba->ctrl;4092 struct hwi_controller *phwi_ctrlr;4093 struct hwi_context_memory *phwi_context;4094 struct be_queue_info *eq;4095 u8 __iomem *addr;4096 u32 reg, i;4097 u32 enabled;4098 4099 phwi_ctrlr = phba->phwi_ctrlr;4100 phwi_context = phwi_ctrlr->phwi_ctxt;4101 4102 addr = (u8 __iomem *) ((u8 __iomem *) ctrl->pcicfg +4103 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);4104 reg = ioread32(addr);4105 4106 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;4107 if (!enabled) {4108 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;4109 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,4110 "BM_%d : reg =x%08x addr=%p\n", reg, addr);4111 iowrite32(reg, addr);4112 }4113 4114 if (!phba->pcidev->msix_enabled) {4115 eq = &phwi_context->be_eq[0].q;4116 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,4117 "BM_%d : eq->id=%d\n", eq->id);4118 4119 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);4120 } else {4121 for (i = 0; i <= phba->num_cpus; i++) {4122 eq = &phwi_context->be_eq[i].q;4123 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,4124 "BM_%d : eq->id=%d\n", eq->id);4125 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);4126 }4127 }4128}4129 4130static void hwi_disable_intr(struct beiscsi_hba *phba)4131{4132 struct be_ctrl_info *ctrl = &phba->ctrl;4133 4134 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;4135 u32 reg = ioread32(addr);4136 4137 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;4138 if (enabled) {4139 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;4140 iowrite32(reg, addr);4141 } else4142 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,4143 "BM_%d : In hwi_disable_intr, Already Disabled\n");4144}4145 4146static int beiscsi_init_port(struct beiscsi_hba *phba)4147{4148 int ret;4149 4150 ret = hwi_init_controller(phba);4151 if (ret < 0) {4152 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,4153 "BM_%d : init controller failed\n");4154 return ret;4155 }4156 ret = beiscsi_init_sgl_handle(phba);4157 if (ret < 0) {4158 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,4159 "BM_%d : init sgl handles failed\n");4160 goto cleanup_port;4161 }4162 4163 ret = hba_setup_cid_tbls(phba);4164 if (ret < 0) {4165 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,4166 "BM_%d : setup CID table failed\n");4167 kfree(phba->io_sgl_hndl_base);4168 kfree(phba->eh_sgl_hndl_base);4169 goto cleanup_port;4170 }4171 return ret;4172 4173cleanup_port:4174 hwi_cleanup_port(phba);4175 return ret;4176}4177 4178static void beiscsi_cleanup_port(struct beiscsi_hba *phba)4179{4180 struct ulp_cid_info *ptr_cid_info = NULL;4181 int ulp_num;4182 4183 kfree(phba->io_sgl_hndl_base);4184 kfree(phba->eh_sgl_hndl_base);4185 kfree(phba->ep_array);4186 kfree(phba->conn_table);4187 4188 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {4189 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {4190 ptr_cid_info = phba->cid_array_info[ulp_num];4191 4192 if (ptr_cid_info) {4193 kfree(ptr_cid_info->cid_array);4194 kfree(ptr_cid_info);4195 phba->cid_array_info[ulp_num] = NULL;4196 }4197 }4198 }4199}4200 4201/**4202 * beiscsi_free_mgmt_task_handles()- Free driver CXN resources4203 * @beiscsi_conn: ptr to the conn to be cleaned up4204 * @task: ptr to iscsi_task resource to be freed.4205 *4206 * Free driver mgmt resources binded to CXN.4207 **/4208void4209beiscsi_free_mgmt_task_handles(struct beiscsi_conn *beiscsi_conn,4210 struct iscsi_task *task)4211{4212 struct beiscsi_io_task *io_task;4213 struct beiscsi_hba *phba = beiscsi_conn->phba;4214 struct hwi_wrb_context *pwrb_context;4215 struct hwi_controller *phwi_ctrlr;4216 uint16_t cri_index = BE_GET_CRI_FROM_CID(4217 beiscsi_conn->beiscsi_conn_cid);4218 4219 phwi_ctrlr = phba->phwi_ctrlr;4220 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];4221 4222 io_task = task->dd_data;4223 4224 if (io_task->pwrb_handle) {4225 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);4226 io_task->pwrb_handle = NULL;4227 }4228 4229 if (io_task->psgl_handle) {4230 free_mgmt_sgl_handle(phba, io_task->psgl_handle);4231 io_task->psgl_handle = NULL;4232 }4233 4234 if (io_task->mtask_addr) {4235 dma_unmap_single(&phba->pcidev->dev,4236 io_task->mtask_addr,4237 io_task->mtask_data_count,4238 DMA_TO_DEVICE);4239 io_task->mtask_addr = 0;4240 }4241}4242 4243/**4244 * beiscsi_cleanup_task()- Free driver resources of the task4245 * @task: ptr to the iscsi task4246 *4247 **/4248static void beiscsi_cleanup_task(struct iscsi_task *task)4249{4250 struct beiscsi_io_task *io_task = task->dd_data;4251 struct iscsi_conn *conn = task->conn;4252 struct beiscsi_conn *beiscsi_conn = conn->dd_data;4253 struct beiscsi_hba *phba = beiscsi_conn->phba;4254 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;4255 struct hwi_wrb_context *pwrb_context;4256 struct hwi_controller *phwi_ctrlr;4257 uint16_t cri_index = BE_GET_CRI_FROM_CID(4258 beiscsi_conn->beiscsi_conn_cid);4259 4260 phwi_ctrlr = phba->phwi_ctrlr;4261 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];4262 4263 if (io_task->cmd_bhs) {4264 dma_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,4265 io_task->bhs_pa.u.a64.address);4266 io_task->cmd_bhs = NULL;4267 task->hdr = NULL;4268 }4269 4270 if (task->sc) {4271 if (io_task->pwrb_handle) {4272 free_wrb_handle(phba, pwrb_context,4273 io_task->pwrb_handle);4274 io_task->pwrb_handle = NULL;4275 }4276 4277 if (io_task->psgl_handle) {4278 free_io_sgl_handle(phba, io_task->psgl_handle);4279 io_task->psgl_handle = NULL;4280 }4281 4282 if (io_task->scsi_cmnd) {4283 if (io_task->num_sg)4284 scsi_dma_unmap(io_task->scsi_cmnd);4285 io_task->scsi_cmnd = NULL;4286 }4287 } else {4288 if (!beiscsi_conn->login_in_progress)4289 beiscsi_free_mgmt_task_handles(beiscsi_conn, task);4290 }4291}4292 4293void4294beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,4295 struct beiscsi_offload_params *params)4296{4297 struct wrb_handle *pwrb_handle;4298 struct hwi_wrb_context *pwrb_context = NULL;4299 struct beiscsi_hba *phba = beiscsi_conn->phba;4300 struct iscsi_task *task = beiscsi_conn->task;4301 struct iscsi_session *session = task->conn->session;4302 u32 doorbell = 0;4303 4304 /*4305 * We can always use 0 here because it is reserved by libiscsi for4306 * login/startup related tasks.4307 */4308 beiscsi_conn->login_in_progress = 0;4309 spin_lock_bh(&session->back_lock);4310 beiscsi_cleanup_task(task);4311 spin_unlock_bh(&session->back_lock);4312 4313 pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid,4314 &pwrb_context);4315 4316 /* Check for the adapter family */4317 if (is_chip_be2_be3r(phba))4318 beiscsi_offload_cxn_v0(params, pwrb_handle,4319 phba->init_mem,4320 pwrb_context);4321 else4322 beiscsi_offload_cxn_v2(params, pwrb_handle,4323 pwrb_context);4324 4325 be_dws_le_to_cpu(pwrb_handle->pwrb,4326 sizeof(struct iscsi_target_context_update_wrb));4327 4328 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;4329 doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)4330 << DB_DEF_PDU_WRB_INDEX_SHIFT;4331 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;4332 iowrite32(doorbell, phba->db_va +4333 beiscsi_conn->doorbell_offset);4334 4335 /*4336 * There is no completion for CONTEXT_UPDATE. The completion of next4337 * WRB posted guarantees FW's processing and DMA'ing of it.4338 * Use beiscsi_put_wrb_handle to put it back in the pool which makes4339 * sure zero'ing or reuse of the WRB only after wrbs_per_cxn.4340 */4341 beiscsi_put_wrb_handle(pwrb_context, pwrb_handle,4342 phba->params.wrbs_per_cxn);4343 beiscsi_log(phba, KERN_INFO,4344 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,4345 "BM_%d : put CONTEXT_UPDATE pwrb_handle=%p free_index=0x%x wrb_handles_available=%d\n",4346 pwrb_handle, pwrb_context->free_index,4347 pwrb_context->wrb_handles_available);4348}4349 4350static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt,4351 int *index, int *age)4352{4353 *index = (int)itt;4354 if (age)4355 *age = conn->session->age;4356}4357 4358/**4359 * beiscsi_alloc_pdu - allocates pdu and related resources4360 * @task: libiscsi task4361 * @opcode: opcode of pdu for task4362 *4363 * This is called with the session lock held. It will allocate4364 * the wrb and sgl if needed for the command. And it will prep4365 * the pdu's itt. beiscsi_parse_pdu will later translate4366 * the pdu itt to the libiscsi task itt.4367 */4368static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)4369{4370 struct beiscsi_io_task *io_task = task->dd_data;4371 struct iscsi_conn *conn = task->conn;4372 struct beiscsi_conn *beiscsi_conn = conn->dd_data;4373 struct beiscsi_hba *phba = beiscsi_conn->phba;4374 struct hwi_wrb_context *pwrb_context;4375 struct hwi_controller *phwi_ctrlr;4376 itt_t itt;4377 uint16_t cri_index = 0;4378 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;4379 dma_addr_t paddr;4380 4381 io_task->cmd_bhs = dma_pool_alloc(beiscsi_sess->bhs_pool,4382 GFP_ATOMIC, &paddr);4383 if (!io_task->cmd_bhs)4384 return -ENOMEM;4385 io_task->bhs_pa.u.a64.address = paddr;4386 io_task->libiscsi_itt = (itt_t)task->itt;4387 io_task->conn = beiscsi_conn;4388 4389 task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr;4390 task->hdr_max = sizeof(struct be_cmd_bhs);4391 io_task->psgl_handle = NULL;4392 io_task->pwrb_handle = NULL;4393 4394 if (task->sc) {4395 io_task->psgl_handle = alloc_io_sgl_handle(phba);4396 if (!io_task->psgl_handle) {4397 beiscsi_log(phba, KERN_ERR,4398 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,4399 "BM_%d : Alloc of IO_SGL_ICD Failed "4400 "for the CID : %d\n",4401 beiscsi_conn->beiscsi_conn_cid);4402 goto free_hndls;4403 }4404 io_task->pwrb_handle = alloc_wrb_handle(phba,4405 beiscsi_conn->beiscsi_conn_cid,4406 &io_task->pwrb_context);4407 if (!io_task->pwrb_handle) {4408 beiscsi_log(phba, KERN_ERR,4409 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,4410 "BM_%d : Alloc of WRB_HANDLE Failed "4411 "for the CID : %d\n",4412 beiscsi_conn->beiscsi_conn_cid);4413 goto free_io_hndls;4414 }4415 } else {4416 io_task->scsi_cmnd = NULL;4417 if ((opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) {4418 beiscsi_conn->task = task;4419 if (!beiscsi_conn->login_in_progress) {4420 io_task->psgl_handle = (struct sgl_handle *)4421 alloc_mgmt_sgl_handle(phba);4422 if (!io_task->psgl_handle) {4423 beiscsi_log(phba, KERN_ERR,4424 BEISCSI_LOG_IO |4425 BEISCSI_LOG_CONFIG,4426 "BM_%d : Alloc of MGMT_SGL_ICD Failed "4427 "for the CID : %d\n",4428 beiscsi_conn->beiscsi_conn_cid);4429 goto free_hndls;4430 }4431 4432 beiscsi_conn->login_in_progress = 1;4433 beiscsi_conn->plogin_sgl_handle =4434 io_task->psgl_handle;4435 io_task->pwrb_handle =4436 alloc_wrb_handle(phba,4437 beiscsi_conn->beiscsi_conn_cid,4438 &io_task->pwrb_context);4439 if (!io_task->pwrb_handle) {4440 beiscsi_log(phba, KERN_ERR,4441 BEISCSI_LOG_IO |4442 BEISCSI_LOG_CONFIG,4443 "BM_%d : Alloc of WRB_HANDLE Failed "4444 "for the CID : %d\n",4445 beiscsi_conn->beiscsi_conn_cid);4446 goto free_mgmt_hndls;4447 }4448 beiscsi_conn->plogin_wrb_handle =4449 io_task->pwrb_handle;4450 4451 } else {4452 io_task->psgl_handle =4453 beiscsi_conn->plogin_sgl_handle;4454 io_task->pwrb_handle =4455 beiscsi_conn->plogin_wrb_handle;4456 }4457 } else {4458 io_task->psgl_handle = alloc_mgmt_sgl_handle(phba);4459 if (!io_task->psgl_handle) {4460 beiscsi_log(phba, KERN_ERR,4461 BEISCSI_LOG_IO |4462 BEISCSI_LOG_CONFIG,4463 "BM_%d : Alloc of MGMT_SGL_ICD Failed "4464 "for the CID : %d\n",4465 beiscsi_conn->beiscsi_conn_cid);4466 goto free_hndls;4467 }4468 io_task->pwrb_handle =4469 alloc_wrb_handle(phba,4470 beiscsi_conn->beiscsi_conn_cid,4471 &io_task->pwrb_context);4472 if (!io_task->pwrb_handle) {4473 beiscsi_log(phba, KERN_ERR,4474 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,4475 "BM_%d : Alloc of WRB_HANDLE Failed "4476 "for the CID : %d\n",4477 beiscsi_conn->beiscsi_conn_cid);4478 goto free_mgmt_hndls;4479 }4480 4481 }4482 }4483 itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle->4484 wrb_index << 16) | (unsigned int)4485 (io_task->psgl_handle->sgl_index));4486 io_task->pwrb_handle->pio_handle = task;4487 4488 io_task->cmd_bhs->iscsi_hdr.itt = itt;4489 return 0;4490 4491free_io_hndls:4492 free_io_sgl_handle(phba, io_task->psgl_handle);4493 goto free_hndls;4494free_mgmt_hndls:4495 free_mgmt_sgl_handle(phba, io_task->psgl_handle);4496 io_task->psgl_handle = NULL;4497free_hndls:4498 phwi_ctrlr = phba->phwi_ctrlr;4499 cri_index = BE_GET_CRI_FROM_CID(4500 beiscsi_conn->beiscsi_conn_cid);4501 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];4502 if (io_task->pwrb_handle)4503 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);4504 io_task->pwrb_handle = NULL;4505 dma_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,4506 io_task->bhs_pa.u.a64.address);4507 io_task->cmd_bhs = NULL;4508 return -ENOMEM;4509}4510static int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg,4511 unsigned int num_sg, unsigned int xferlen,4512 unsigned int writedir)4513{4514 4515 struct beiscsi_io_task *io_task = task->dd_data;4516 struct iscsi_conn *conn = task->conn;4517 struct beiscsi_conn *beiscsi_conn = conn->dd_data;4518 struct beiscsi_hba *phba = beiscsi_conn->phba;4519 struct iscsi_wrb *pwrb = NULL;4520 unsigned int doorbell = 0;4521 4522 pwrb = io_task->pwrb_handle->pwrb;4523 4524 io_task->bhs_len = sizeof(struct be_cmd_bhs);4525 4526 if (writedir) {4527 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,4528 INI_WR_CMD);4529 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 1);4530 } else {4531 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,4532 INI_RD_CMD);4533 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 0);4534 }4535 4536 io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb_v2,4537 type, pwrb);4538 4539 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, lun, pwrb,4540 cpu_to_be16(*(unsigned short *)4541 &io_task->cmd_bhs->iscsi_hdr.lun));4542 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb, xferlen);4543 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,4544 io_task->pwrb_handle->wrb_index);4545 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,4546 be32_to_cpu(task->cmdsn));4547 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,4548 io_task->psgl_handle->sgl_index);4549 4550 hwi_write_sgl_v2(pwrb, sg, num_sg, io_task);4551 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,4552 io_task->pwrb_handle->wrb_index);4553 if (io_task->pwrb_context->plast_wrb)4554 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,4555 io_task->pwrb_context->plast_wrb,4556 io_task->pwrb_handle->wrb_index);4557 io_task->pwrb_context->plast_wrb = pwrb;4558 4559 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));4560 4561 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;4562 doorbell |= (io_task->pwrb_handle->wrb_index &4563 DB_DEF_PDU_WRB_INDEX_MASK) <<4564 DB_DEF_PDU_WRB_INDEX_SHIFT;4565 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;4566 iowrite32(doorbell, phba->db_va +4567 beiscsi_conn->doorbell_offset);4568 return 0;4569}4570 4571static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,4572 unsigned int num_sg, unsigned int xferlen,4573 unsigned int writedir)4574{4575 4576 struct beiscsi_io_task *io_task = task->dd_data;4577 struct iscsi_conn *conn = task->conn;4578 struct beiscsi_conn *beiscsi_conn = conn->dd_data;4579 struct beiscsi_hba *phba = beiscsi_conn->phba;4580 struct iscsi_wrb *pwrb = NULL;4581 unsigned int doorbell = 0;4582 4583 pwrb = io_task->pwrb_handle->pwrb;4584 io_task->bhs_len = sizeof(struct be_cmd_bhs);4585 4586 if (writedir) {4587 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,4588 INI_WR_CMD);4589 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);4590 } else {4591 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,4592 INI_RD_CMD);4593 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);4594 }4595 4596 io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb,4597 type, pwrb);4598 4599 AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb,4600 cpu_to_be16(*(unsigned short *)4601 &io_task->cmd_bhs->iscsi_hdr.lun));4602 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, xferlen);4603 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,4604 io_task->pwrb_handle->wrb_index);4605 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,4606 be32_to_cpu(task->cmdsn));4607 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,4608 io_task->psgl_handle->sgl_index);4609 4610 hwi_write_sgl(pwrb, sg, num_sg, io_task);4611 4612 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,4613 io_task->pwrb_handle->wrb_index);4614 if (io_task->pwrb_context->plast_wrb)4615 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,4616 io_task->pwrb_context->plast_wrb,4617 io_task->pwrb_handle->wrb_index);4618 io_task->pwrb_context->plast_wrb = pwrb;4619 4620 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));4621 4622 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;4623 doorbell |= (io_task->pwrb_handle->wrb_index &4624 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;4625 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;4626 4627 iowrite32(doorbell, phba->db_va +4628 beiscsi_conn->doorbell_offset);4629 return 0;4630}4631 4632static int beiscsi_mtask(struct iscsi_task *task)4633{4634 struct beiscsi_io_task *io_task = task->dd_data;4635 struct iscsi_conn *conn = task->conn;4636 struct beiscsi_conn *beiscsi_conn = conn->dd_data;4637 struct beiscsi_hba *phba = beiscsi_conn->phba;4638 struct iscsi_wrb *pwrb = NULL;4639 unsigned int doorbell = 0;4640 unsigned int cid;4641 unsigned int pwrb_typeoffset = 0;4642 int ret = 0;4643 4644 cid = beiscsi_conn->beiscsi_conn_cid;4645 pwrb = io_task->pwrb_handle->pwrb;4646 4647 if (is_chip_be2_be3r(phba)) {4648 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,4649 be32_to_cpu(task->cmdsn));4650 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,4651 io_task->pwrb_handle->wrb_index);4652 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,4653 io_task->psgl_handle->sgl_index);4654 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb,4655 task->data_count);4656 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,4657 io_task->pwrb_handle->wrb_index);4658 if (io_task->pwrb_context->plast_wrb)4659 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,4660 io_task->pwrb_context->plast_wrb,4661 io_task->pwrb_handle->wrb_index);4662 io_task->pwrb_context->plast_wrb = pwrb;4663 4664 pwrb_typeoffset = BE_WRB_TYPE_OFFSET;4665 } else {4666 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,4667 be32_to_cpu(task->cmdsn));4668 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,4669 io_task->pwrb_handle->wrb_index);4670 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,4671 io_task->psgl_handle->sgl_index);4672 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb,4673 task->data_count);4674 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,4675 io_task->pwrb_handle->wrb_index);4676 if (io_task->pwrb_context->plast_wrb)4677 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,4678 io_task->pwrb_context->plast_wrb,4679 io_task->pwrb_handle->wrb_index);4680 io_task->pwrb_context->plast_wrb = pwrb;4681 4682 pwrb_typeoffset = SKH_WRB_TYPE_OFFSET;4683 }4684 4685 4686 switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {4687 case ISCSI_OP_LOGIN:4688 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1);4689 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);4690 ret = hwi_write_buffer(pwrb, task);4691 break;4692 case ISCSI_OP_NOOP_OUT:4693 if (task->hdr->ttt != ISCSI_RESERVED_TAG) {4694 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);4695 if (is_chip_be2_be3r(phba))4696 AMAP_SET_BITS(struct amap_iscsi_wrb,4697 dmsg, pwrb, 1);4698 else4699 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,4700 dmsg, pwrb, 1);4701 } else {4702 ADAPTER_SET_WRB_TYPE(pwrb, INI_RD_CMD, pwrb_typeoffset);4703 if (is_chip_be2_be3r(phba))4704 AMAP_SET_BITS(struct amap_iscsi_wrb,4705 dmsg, pwrb, 0);4706 else4707 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,4708 dmsg, pwrb, 0);4709 }4710 ret = hwi_write_buffer(pwrb, task);4711 break;4712 case ISCSI_OP_TEXT:4713 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);4714 ret = hwi_write_buffer(pwrb, task);4715 break;4716 case ISCSI_OP_SCSI_TMFUNC:4717 ADAPTER_SET_WRB_TYPE(pwrb, INI_TMF_CMD, pwrb_typeoffset);4718 ret = hwi_write_buffer(pwrb, task);4719 break;4720 case ISCSI_OP_LOGOUT:4721 ADAPTER_SET_WRB_TYPE(pwrb, HWH_TYPE_LOGOUT, pwrb_typeoffset);4722 ret = hwi_write_buffer(pwrb, task);4723 break;4724 4725 default:4726 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,4727 "BM_%d : opcode =%d Not supported\n",4728 task->hdr->opcode & ISCSI_OPCODE_MASK);4729 4730 return -EINVAL;4731 }4732 4733 if (ret)4734 return ret;4735 4736 /* Set the task type */4737 io_task->wrb_type = (is_chip_be2_be3r(phba)) ?4738 AMAP_GET_BITS(struct amap_iscsi_wrb, type, pwrb) :4739 AMAP_GET_BITS(struct amap_iscsi_wrb_v2, type, pwrb);4740 4741 doorbell |= cid & DB_WRB_POST_CID_MASK;4742 doorbell |= (io_task->pwrb_handle->wrb_index &4743 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;4744 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;4745 iowrite32(doorbell, phba->db_va +4746 beiscsi_conn->doorbell_offset);4747 return 0;4748}4749 4750static int beiscsi_task_xmit(struct iscsi_task *task)4751{4752 struct beiscsi_io_task *io_task = task->dd_data;4753 struct scsi_cmnd *sc = task->sc;4754 struct beiscsi_hba *phba;4755 struct scatterlist *sg;4756 int num_sg;4757 unsigned int writedir = 0, xferlen = 0;4758 4759 phba = io_task->conn->phba;4760 /**4761 * HBA in error includes BEISCSI_HBA_FW_TIMEOUT. IO path might be4762 * operational if FW still gets heartbeat from EP FW. Is management4763 * path really needed to continue further?4764 */4765 if (!beiscsi_hba_is_online(phba))4766 return -EIO;4767 4768 if (!io_task->conn->login_in_progress)4769 task->hdr->exp_statsn = 0;4770 4771 if (!sc)4772 return beiscsi_mtask(task);4773 4774 io_task->scsi_cmnd = sc;4775 io_task->num_sg = 0;4776 num_sg = scsi_dma_map(sc);4777 if (num_sg < 0) {4778 beiscsi_log(phba, KERN_ERR,4779 BEISCSI_LOG_IO | BEISCSI_LOG_ISCSI,4780 "BM_%d : scsi_dma_map Failed "4781 "Driver_ITT : 0x%x ITT : 0x%x Xferlen : 0x%x\n",4782 be32_to_cpu(io_task->cmd_bhs->iscsi_hdr.itt),4783 io_task->libiscsi_itt, scsi_bufflen(sc));4784 4785 return num_sg;4786 }4787 /**4788 * For scsi cmd task, check num_sg before unmapping in cleanup_task.4789 * For management task, cleanup_task checks mtask_addr before unmapping.4790 */4791 io_task->num_sg = num_sg;4792 xferlen = scsi_bufflen(sc);4793 sg = scsi_sglist(sc);4794 if (sc->sc_data_direction == DMA_TO_DEVICE)4795 writedir = 1;4796 else4797 writedir = 0;4798 4799 return phba->iotask_fn(task, sg, num_sg, xferlen, writedir);4800}4801 4802/**4803 * beiscsi_bsg_request - handle bsg request from ISCSI transport4804 * @job: job to handle4805 */4806static int beiscsi_bsg_request(struct bsg_job *job)4807{4808 struct Scsi_Host *shost;4809 struct beiscsi_hba *phba;4810 struct iscsi_bsg_request *bsg_req = job->request;4811 int rc = -EINVAL;4812 unsigned int tag;4813 struct be_dma_mem nonemb_cmd;4814 struct be_cmd_resp_hdr *resp;4815 struct iscsi_bsg_reply *bsg_reply = job->reply;4816 unsigned short status, extd_status;4817 4818 shost = iscsi_job_to_shost(job);4819 phba = iscsi_host_priv(shost);4820 4821 if (!beiscsi_hba_is_online(phba)) {4822 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,4823 "BM_%d : HBA in error 0x%lx\n", phba->state);4824 return -ENXIO;4825 }4826 4827 switch (bsg_req->msgcode) {4828 case ISCSI_BSG_HST_VENDOR:4829 nonemb_cmd.va = dma_alloc_coherent(&phba->ctrl.pdev->dev,4830 job->request_payload.payload_len,4831 &nonemb_cmd.dma, GFP_KERNEL);4832 if (nonemb_cmd.va == NULL) {4833 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,4834 "BM_%d : Failed to allocate memory for "4835 "beiscsi_bsg_request\n");4836 return -ENOMEM;4837 }4838 tag = mgmt_vendor_specific_fw_cmd(&phba->ctrl, phba, job,4839 &nonemb_cmd);4840 if (!tag) {4841 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,4842 "BM_%d : MBX Tag Allocation Failed\n");4843 4844 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,4845 nonemb_cmd.va, nonemb_cmd.dma);4846 return -EAGAIN;4847 }4848 4849 rc = wait_event_interruptible_timeout(4850 phba->ctrl.mcc_wait[tag],4851 phba->ctrl.mcc_tag_status[tag],4852 msecs_to_jiffies(4853 BEISCSI_HOST_MBX_TIMEOUT));4854 4855 if (!test_bit(BEISCSI_HBA_ONLINE, &phba->state)) {4856 clear_bit(MCC_TAG_STATE_RUNNING,4857 &phba->ctrl.ptag_state[tag].tag_state);4858 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,4859 nonemb_cmd.va, nonemb_cmd.dma);4860 return -EIO;4861 }4862 extd_status = (phba->ctrl.mcc_tag_status[tag] &4863 CQE_STATUS_ADDL_MASK) >> CQE_STATUS_ADDL_SHIFT;4864 status = phba->ctrl.mcc_tag_status[tag] & CQE_STATUS_MASK;4865 free_mcc_wrb(&phba->ctrl, tag);4866 resp = (struct be_cmd_resp_hdr *)nonemb_cmd.va;4867 sg_copy_from_buffer(job->reply_payload.sg_list,4868 job->reply_payload.sg_cnt,4869 nonemb_cmd.va, (resp->response_length4870 + sizeof(*resp)));4871 bsg_reply->reply_payload_rcv_len = resp->response_length;4872 bsg_reply->result = status;4873 bsg_job_done(job, bsg_reply->result,4874 bsg_reply->reply_payload_rcv_len);4875 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,4876 nonemb_cmd.va, nonemb_cmd.dma);4877 if (status || extd_status) {4878 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,4879 "BM_%d : MBX Cmd Failed"4880 " status = %d extd_status = %d\n",4881 status, extd_status);4882 4883 return -EIO;4884 } else {4885 rc = 0;4886 }4887 break;4888 4889 default:4890 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,4891 "BM_%d : Unsupported bsg command: 0x%x\n",4892 bsg_req->msgcode);4893 break;4894 }4895 4896 return rc;4897}4898 4899static void beiscsi_hba_attrs_init(struct beiscsi_hba *phba)4900{4901 /* Set the logging parameter */4902 beiscsi_log_enable_init(phba, beiscsi_log_enable);4903}4904 4905void beiscsi_start_boot_work(struct beiscsi_hba *phba, unsigned int s_handle)4906{4907 if (phba->boot_struct.boot_kset)4908 return;4909 4910 /* skip if boot work is already in progress */4911 if (test_and_set_bit(BEISCSI_HBA_BOOT_WORK, &phba->state))4912 return;4913 4914 phba->boot_struct.retry = 3;4915 phba->boot_struct.tag = 0;4916 phba->boot_struct.s_handle = s_handle;4917 phba->boot_struct.action = BEISCSI_BOOT_GET_SHANDLE;4918 schedule_work(&phba->boot_work);4919}4920 4921#define BEISCSI_SYSFS_ISCSI_BOOT_FLAGS 34922/*4923 * beiscsi_show_boot_tgt_info()4924 * Boot flag info for iscsi-utilities4925 * Bit 0 Block valid flag4926 * Bit 1 Firmware booting selected4927 */4928static ssize_t beiscsi_show_boot_tgt_info(void *data, int type, char *buf)4929{4930 struct beiscsi_hba *phba = data;4931 struct mgmt_session_info *boot_sess = &phba->boot_struct.boot_sess;4932 struct mgmt_conn_info *boot_conn = &boot_sess->conn_list[0];4933 char *str = buf;4934 int rc = -EPERM;4935 4936 switch (type) {4937 case ISCSI_BOOT_TGT_NAME:4938 rc = sprintf(buf, "%.*s\n",4939 (int)strlen(boot_sess->target_name),4940 (char *)&boot_sess->target_name);4941 break;4942 case ISCSI_BOOT_TGT_IP_ADDR:4943 if (boot_conn->dest_ipaddr.ip_type == BEISCSI_IP_TYPE_V4)4944 rc = sprintf(buf, "%pI4\n",4945 (char *)&boot_conn->dest_ipaddr.addr);4946 else4947 rc = sprintf(str, "%pI6\n",4948 (char *)&boot_conn->dest_ipaddr.addr);4949 break;4950 case ISCSI_BOOT_TGT_PORT:4951 rc = sprintf(str, "%d\n", boot_conn->dest_port);4952 break;4953 4954 case ISCSI_BOOT_TGT_CHAP_NAME:4955 rc = sprintf(str, "%.*s\n",4956 boot_conn->negotiated_login_options.auth_data.chap.4957 target_chap_name_length,4958 (char *)&boot_conn->negotiated_login_options.4959 auth_data.chap.target_chap_name);4960 break;4961 case ISCSI_BOOT_TGT_CHAP_SECRET:4962 rc = sprintf(str, "%.*s\n",4963 boot_conn->negotiated_login_options.auth_data.chap.4964 target_secret_length,4965 (char *)&boot_conn->negotiated_login_options.4966 auth_data.chap.target_secret);4967 break;4968 case ISCSI_BOOT_TGT_REV_CHAP_NAME:4969 rc = sprintf(str, "%.*s\n",4970 boot_conn->negotiated_login_options.auth_data.chap.4971 intr_chap_name_length,4972 (char *)&boot_conn->negotiated_login_options.4973 auth_data.chap.intr_chap_name);4974 break;4975 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:4976 rc = sprintf(str, "%.*s\n",4977 boot_conn->negotiated_login_options.auth_data.chap.4978 intr_secret_length,4979 (char *)&boot_conn->negotiated_login_options.4980 auth_data.chap.intr_secret);4981 break;4982 case ISCSI_BOOT_TGT_FLAGS:4983 rc = sprintf(str, "%d\n", BEISCSI_SYSFS_ISCSI_BOOT_FLAGS);4984 break;4985 case ISCSI_BOOT_TGT_NIC_ASSOC:4986 rc = sprintf(str, "0\n");4987 break;4988 }4989 return rc;4990}4991 4992static ssize_t beiscsi_show_boot_ini_info(void *data, int type, char *buf)4993{4994 struct beiscsi_hba *phba = data;4995 char *str = buf;4996 int rc = -EPERM;4997 4998 switch (type) {4999 case ISCSI_BOOT_INI_INITIATOR_NAME:5000 rc = sprintf(str, "%s\n",5001 phba->boot_struct.boot_sess.initiator_iscsiname);5002 break;5003 }5004 return rc;5005}5006 5007static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)5008{5009 struct beiscsi_hba *phba = data;5010 char *str = buf;5011 int rc = -EPERM;5012 5013 switch (type) {5014 case ISCSI_BOOT_ETH_FLAGS:5015 rc = sprintf(str, "%d\n", BEISCSI_SYSFS_ISCSI_BOOT_FLAGS);5016 break;5017 case ISCSI_BOOT_ETH_INDEX:5018 rc = sprintf(str, "0\n");5019 break;5020 case ISCSI_BOOT_ETH_MAC:5021 rc = beiscsi_get_macaddr(str, phba);5022 break;5023 }5024 return rc;5025}5026 5027static umode_t beiscsi_tgt_get_attr_visibility(void *data, int type)5028{5029 umode_t rc = 0;5030 5031 switch (type) {5032 case ISCSI_BOOT_TGT_NAME:5033 case ISCSI_BOOT_TGT_IP_ADDR:5034 case ISCSI_BOOT_TGT_PORT:5035 case ISCSI_BOOT_TGT_CHAP_NAME:5036 case ISCSI_BOOT_TGT_CHAP_SECRET:5037 case ISCSI_BOOT_TGT_REV_CHAP_NAME:5038 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:5039 case ISCSI_BOOT_TGT_NIC_ASSOC:5040 case ISCSI_BOOT_TGT_FLAGS:5041 rc = S_IRUGO;5042 break;5043 }5044 return rc;5045}5046 5047static umode_t beiscsi_ini_get_attr_visibility(void *data, int type)5048{5049 umode_t rc = 0;5050 5051 switch (type) {5052 case ISCSI_BOOT_INI_INITIATOR_NAME:5053 rc = S_IRUGO;5054 break;5055 }5056 return rc;5057}5058 5059static umode_t beiscsi_eth_get_attr_visibility(void *data, int type)5060{5061 umode_t rc = 0;5062 5063 switch (type) {5064 case ISCSI_BOOT_ETH_FLAGS:5065 case ISCSI_BOOT_ETH_MAC:5066 case ISCSI_BOOT_ETH_INDEX:5067 rc = S_IRUGO;5068 break;5069 }5070 return rc;5071}5072 5073static void beiscsi_boot_kobj_release(void *data)5074{5075 struct beiscsi_hba *phba = data;5076 5077 scsi_host_put(phba->shost);5078}5079 5080static int beiscsi_boot_create_kset(struct beiscsi_hba *phba)5081{5082 struct boot_struct *bs = &phba->boot_struct;5083 struct iscsi_boot_kobj *boot_kobj;5084 5085 if (bs->boot_kset) {5086 __beiscsi_log(phba, KERN_ERR,5087 "BM_%d: boot_kset already created\n");5088 return 0;5089 }5090 5091 bs->boot_kset = iscsi_boot_create_host_kset(phba->shost->host_no);5092 if (!bs->boot_kset) {5093 __beiscsi_log(phba, KERN_ERR,5094 "BM_%d: boot_kset alloc failed\n");5095 return -ENOMEM;5096 }5097 5098 /* get shost ref because the show function will refer phba */5099 if (!scsi_host_get(phba->shost))5100 goto free_kset;5101 5102 boot_kobj = iscsi_boot_create_target(bs->boot_kset, 0, phba,5103 beiscsi_show_boot_tgt_info,5104 beiscsi_tgt_get_attr_visibility,5105 beiscsi_boot_kobj_release);5106 if (!boot_kobj)5107 goto put_shost;5108 5109 if (!scsi_host_get(phba->shost))5110 goto free_kset;5111 5112 boot_kobj = iscsi_boot_create_initiator(bs->boot_kset, 0, phba,5113 beiscsi_show_boot_ini_info,5114 beiscsi_ini_get_attr_visibility,5115 beiscsi_boot_kobj_release);5116 if (!boot_kobj)5117 goto put_shost;5118 5119 if (!scsi_host_get(phba->shost))5120 goto free_kset;5121 5122 boot_kobj = iscsi_boot_create_ethernet(bs->boot_kset, 0, phba,5123 beiscsi_show_boot_eth_info,5124 beiscsi_eth_get_attr_visibility,5125 beiscsi_boot_kobj_release);5126 if (!boot_kobj)5127 goto put_shost;5128 5129 return 0;5130 5131put_shost:5132 scsi_host_put(phba->shost);5133free_kset:5134 iscsi_boot_destroy_kset(bs->boot_kset);5135 bs->boot_kset = NULL;5136 return -ENOMEM;5137}5138 5139static void beiscsi_boot_work(struct work_struct *work)5140{5141 struct beiscsi_hba *phba =5142 container_of(work, struct beiscsi_hba, boot_work);5143 struct boot_struct *bs = &phba->boot_struct;5144 unsigned int tag = 0;5145 5146 if (!beiscsi_hba_is_online(phba))5147 return;5148 5149 beiscsi_log(phba, KERN_INFO,5150 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,5151 "BM_%d : %s action %d\n",5152 __func__, phba->boot_struct.action);5153 5154 switch (phba->boot_struct.action) {5155 case BEISCSI_BOOT_REOPEN_SESS:5156 tag = beiscsi_boot_reopen_sess(phba);5157 break;5158 case BEISCSI_BOOT_GET_SHANDLE:5159 tag = __beiscsi_boot_get_shandle(phba, 1);5160 break;5161 case BEISCSI_BOOT_GET_SINFO:5162 tag = beiscsi_boot_get_sinfo(phba);5163 break;5164 case BEISCSI_BOOT_LOGOUT_SESS:5165 tag = beiscsi_boot_logout_sess(phba);5166 break;5167 case BEISCSI_BOOT_CREATE_KSET:5168 beiscsi_boot_create_kset(phba);5169 /**5170 * updated boot_kset is made visible to all before5171 * ending the boot work.5172 */5173 mb();5174 clear_bit(BEISCSI_HBA_BOOT_WORK, &phba->state);5175 return;5176 }5177 if (!tag) {5178 if (bs->retry--)5179 schedule_work(&phba->boot_work);5180 else5181 clear_bit(BEISCSI_HBA_BOOT_WORK, &phba->state);5182 }5183}5184 5185static void beiscsi_eqd_update_work(struct work_struct *work)5186{5187 struct hwi_context_memory *phwi_context;5188 struct be_set_eqd set_eqd[MAX_CPUS];5189 struct hwi_controller *phwi_ctrlr;5190 struct be_eq_obj *pbe_eq;5191 struct beiscsi_hba *phba;5192 unsigned int pps, delta;5193 struct be_aic_obj *aic;5194 int eqd, i, num = 0;5195 unsigned long now;5196 5197 phba = container_of(work, struct beiscsi_hba, eqd_update.work);5198 if (!beiscsi_hba_is_online(phba))5199 return;5200 5201 phwi_ctrlr = phba->phwi_ctrlr;5202 phwi_context = phwi_ctrlr->phwi_ctxt;5203 5204 for (i = 0; i <= phba->num_cpus; i++) {5205 aic = &phba->aic_obj[i];5206 pbe_eq = &phwi_context->be_eq[i];5207 now = jiffies;5208 if (!aic->jiffies || time_before(now, aic->jiffies) ||5209 pbe_eq->cq_count < aic->eq_prev) {5210 aic->jiffies = now;5211 aic->eq_prev = pbe_eq->cq_count;5212 continue;5213 }5214 delta = jiffies_to_msecs(now - aic->jiffies);5215 pps = (((u32)(pbe_eq->cq_count - aic->eq_prev) * 1000) / delta);5216 eqd = (pps / 1500) << 2;5217 5218 if (eqd < 8)5219 eqd = 0;5220 eqd = min_t(u32, eqd, BEISCSI_EQ_DELAY_MAX);5221 eqd = max_t(u32, eqd, BEISCSI_EQ_DELAY_MIN);5222 5223 aic->jiffies = now;5224 aic->eq_prev = pbe_eq->cq_count;5225 5226 if (eqd != aic->prev_eqd) {5227 set_eqd[num].delay_multiplier = (eqd * 65)/100;5228 set_eqd[num].eq_id = pbe_eq->q.id;5229 aic->prev_eqd = eqd;5230 num++;5231 }5232 }5233 if (num)5234 /* completion of this is ignored */5235 beiscsi_modify_eq_delay(phba, set_eqd, num);5236 5237 schedule_delayed_work(&phba->eqd_update,5238 msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));5239}5240 5241static void beiscsi_hw_tpe_check(struct timer_list *t)5242{5243 struct beiscsi_hba *phba = from_timer(phba, t, hw_check);5244 u32 wait;5245 5246 /* if not TPE, do nothing */5247 if (!beiscsi_detect_tpe(phba))5248 return;5249 5250 /* wait default 4000ms before recovering */5251 wait = 4000;5252 if (phba->ue2rp > BEISCSI_UE_DETECT_INTERVAL)5253 wait = phba->ue2rp - BEISCSI_UE_DETECT_INTERVAL;5254 queue_delayed_work(phba->wq, &phba->recover_port,5255 msecs_to_jiffies(wait));5256}5257 5258static void beiscsi_hw_health_check(struct timer_list *t)5259{5260 struct beiscsi_hba *phba = from_timer(phba, t, hw_check);5261 5262 beiscsi_detect_ue(phba);5263 if (beiscsi_detect_ue(phba)) {5264 __beiscsi_log(phba, KERN_ERR,5265 "BM_%d : port in error: %lx\n", phba->state);5266 /* sessions are no longer valid, so first fail the sessions */5267 queue_work(phba->wq, &phba->sess_work);5268 5269 /* detect UER supported */5270 if (!test_bit(BEISCSI_HBA_UER_SUPP, &phba->state))5271 return;5272 /* modify this timer to check TPE */5273 phba->hw_check.function = beiscsi_hw_tpe_check;5274 }5275 5276 mod_timer(&phba->hw_check,5277 jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));5278}5279 5280/*5281 * beiscsi_enable_port()- Enables the disabled port.5282 * Only port resources freed in disable function are reallocated.5283 * This is called in HBA error handling path.5284 *5285 * @phba: Instance of driver private structure5286 *5287 **/5288static int beiscsi_enable_port(struct beiscsi_hba *phba)5289{5290 struct hwi_context_memory *phwi_context;5291 struct hwi_controller *phwi_ctrlr;5292 struct be_eq_obj *pbe_eq;5293 int ret, i;5294 5295 if (test_bit(BEISCSI_HBA_ONLINE, &phba->state)) {5296 __beiscsi_log(phba, KERN_ERR,5297 "BM_%d : %s : port is online %lx\n",5298 __func__, phba->state);5299 return 0;5300 }5301 5302 ret = beiscsi_init_sliport(phba);5303 if (ret)5304 return ret;5305 5306 be2iscsi_enable_msix(phba);5307 5308 beiscsi_get_params(phba);5309 beiscsi_set_host_data(phba);5310 /* Re-enable UER. If different TPE occurs then it is recoverable. */5311 beiscsi_set_uer_feature(phba);5312 5313 phba->shost->max_id = phba->params.cxns_per_ctrl - 1;5314 phba->shost->can_queue = phba->params.ios_per_ctrl;5315 ret = beiscsi_init_port(phba);5316 if (ret < 0) {5317 __beiscsi_log(phba, KERN_ERR,5318 "BM_%d : init port failed\n");5319 goto disable_msix;5320 }5321 5322 for (i = 0; i < MAX_MCC_CMD; i++) {5323 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);5324 phba->ctrl.mcc_tag[i] = i + 1;5325 phba->ctrl.mcc_tag_status[i + 1] = 0;5326 phba->ctrl.mcc_tag_available++;5327 }5328 5329 phwi_ctrlr = phba->phwi_ctrlr;5330 phwi_context = phwi_ctrlr->phwi_ctxt;5331 for (i = 0; i < phba->num_cpus; i++) {5332 pbe_eq = &phwi_context->be_eq[i];5333 irq_poll_init(&pbe_eq->iopoll, be_iopoll_budget, be_iopoll);5334 }5335 5336 i = (phba->pcidev->msix_enabled) ? i : 0;5337 /* Work item for MCC handling */5338 pbe_eq = &phwi_context->be_eq[i];5339 INIT_WORK(&pbe_eq->mcc_work, beiscsi_mcc_work);5340 5341 ret = beiscsi_init_irqs(phba);5342 if (ret < 0) {5343 __beiscsi_log(phba, KERN_ERR,5344 "BM_%d : setup IRQs failed %d\n", ret);5345 goto cleanup_port;5346 }5347 hwi_enable_intr(phba);5348 /* port operational: clear all error bits */5349 set_bit(BEISCSI_HBA_ONLINE, &phba->state);5350 __beiscsi_log(phba, KERN_INFO,5351 "BM_%d : port online: 0x%lx\n", phba->state);5352 5353 /* start hw_check timer and eqd_update work */5354 schedule_delayed_work(&phba->eqd_update,5355 msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));5356 5357 /**5358 * Timer function gets modified for TPE detection.5359 * Always reinit to do health check first.5360 */5361 phba->hw_check.function = beiscsi_hw_health_check;5362 mod_timer(&phba->hw_check,5363 jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));5364 return 0;5365 5366cleanup_port:5367 for (i = 0; i < phba->num_cpus; i++) {5368 pbe_eq = &phwi_context->be_eq[i];5369 irq_poll_disable(&pbe_eq->iopoll);5370 }5371 hwi_cleanup_port(phba);5372 5373disable_msix:5374 pci_free_irq_vectors(phba->pcidev);5375 return ret;5376}5377 5378/*5379 * beiscsi_disable_port()- Disable port and cleanup driver resources.5380 * This is called in HBA error handling and driver removal.5381 * @phba: Instance Priv structure5382 * @unload: indicate driver is unloading5383 *5384 * Free the OS and HW resources held by the driver5385 **/5386static void beiscsi_disable_port(struct beiscsi_hba *phba, int unload)5387{5388 struct hwi_context_memory *phwi_context;5389 struct hwi_controller *phwi_ctrlr;5390 struct be_eq_obj *pbe_eq;5391 unsigned int i;5392 5393 if (!test_and_clear_bit(BEISCSI_HBA_ONLINE, &phba->state))5394 return;5395 5396 phwi_ctrlr = phba->phwi_ctrlr;5397 phwi_context = phwi_ctrlr->phwi_ctxt;5398 hwi_disable_intr(phba);5399 beiscsi_free_irqs(phba);5400 pci_free_irq_vectors(phba->pcidev);5401 5402 for (i = 0; i < phba->num_cpus; i++) {5403 pbe_eq = &phwi_context->be_eq[i];5404 irq_poll_disable(&pbe_eq->iopoll);5405 }5406 cancel_delayed_work_sync(&phba->eqd_update);5407 cancel_work_sync(&phba->boot_work);5408 /* WQ might be running cancel queued mcc_work if we are not exiting */5409 if (!unload && beiscsi_hba_in_error(phba)) {5410 pbe_eq = &phwi_context->be_eq[i];5411 cancel_work_sync(&pbe_eq->mcc_work);5412 }5413 hwi_cleanup_port(phba);5414 beiscsi_cleanup_port(phba);5415}5416 5417static void beiscsi_sess_work(struct work_struct *work)5418{5419 struct beiscsi_hba *phba;5420 5421 phba = container_of(work, struct beiscsi_hba, sess_work);5422 /*5423 * This work gets scheduled only in case of HBA error.5424 * Old sessions are gone so need to be re-established.5425 * iscsi_session_failure needs process context hence this work.5426 */5427 iscsi_host_for_each_session(phba->shost, beiscsi_session_fail);5428}5429 5430static void beiscsi_recover_port(struct work_struct *work)5431{5432 struct beiscsi_hba *phba;5433 5434 phba = container_of(work, struct beiscsi_hba, recover_port.work);5435 beiscsi_disable_port(phba, 0);5436 beiscsi_enable_port(phba);5437}5438 5439static pci_ers_result_t beiscsi_eeh_err_detected(struct pci_dev *pdev,5440 pci_channel_state_t state)5441{5442 struct beiscsi_hba *phba = NULL;5443 5444 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);5445 set_bit(BEISCSI_HBA_PCI_ERR, &phba->state);5446 5447 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,5448 "BM_%d : EEH error detected\n");5449 5450 /* first stop UE detection when PCI error detected */5451 del_timer_sync(&phba->hw_check);5452 cancel_delayed_work_sync(&phba->recover_port);5453 5454 /* sessions are no longer valid, so first fail the sessions */5455 iscsi_host_for_each_session(phba->shost, beiscsi_session_fail);5456 beiscsi_disable_port(phba, 0);5457 5458 if (state == pci_channel_io_perm_failure) {5459 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,5460 "BM_%d : EEH : State PERM Failure");5461 return PCI_ERS_RESULT_DISCONNECT;5462 }5463 5464 pci_disable_device(pdev);5465 5466 /* The error could cause the FW to trigger a flash debug dump.5467 * Resetting the card while flash dump is in progress5468 * can cause it not to recover; wait for it to finish.5469 * Wait only for first function as it is needed only once per5470 * adapter.5471 **/5472 if (pdev->devfn == 0)5473 ssleep(30);5474 5475 return PCI_ERS_RESULT_NEED_RESET;5476}5477 5478static pci_ers_result_t beiscsi_eeh_reset(struct pci_dev *pdev)5479{5480 struct beiscsi_hba *phba = NULL;5481 int status = 0;5482 5483 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);5484 5485 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,5486 "BM_%d : EEH Reset\n");5487 5488 status = pci_enable_device(pdev);5489 if (status)5490 return PCI_ERS_RESULT_DISCONNECT;5491 5492 pci_set_master(pdev);5493 pci_set_power_state(pdev, PCI_D0);5494 pci_restore_state(pdev);5495 5496 status = beiscsi_check_fw_rdy(phba);5497 if (status) {5498 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,5499 "BM_%d : EEH Reset Completed\n");5500 } else {5501 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,5502 "BM_%d : EEH Reset Completion Failure\n");5503 return PCI_ERS_RESULT_DISCONNECT;5504 }5505 5506 return PCI_ERS_RESULT_RECOVERED;5507}5508 5509static void beiscsi_eeh_resume(struct pci_dev *pdev)5510{5511 struct beiscsi_hba *phba;5512 int ret;5513 5514 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);5515 pci_save_state(pdev);5516 5517 ret = beiscsi_enable_port(phba);5518 if (ret)5519 __beiscsi_log(phba, KERN_ERR,5520 "BM_%d : AER EEH resume failed\n");5521}5522 5523static int beiscsi_dev_probe(struct pci_dev *pcidev,5524 const struct pci_device_id *id)5525{5526 struct hwi_context_memory *phwi_context;5527 struct hwi_controller *phwi_ctrlr;5528 struct beiscsi_hba *phba = NULL;5529 struct be_eq_obj *pbe_eq;5530 unsigned int s_handle;5531 int ret, i;5532 5533 ret = beiscsi_enable_pci(pcidev);5534 if (ret < 0) {5535 dev_err(&pcidev->dev,5536 "beiscsi_dev_probe - Failed to enable pci device\n");5537 return ret;5538 }5539 5540 phba = beiscsi_hba_alloc(pcidev);5541 if (!phba) {5542 dev_err(&pcidev->dev,5543 "beiscsi_dev_probe - Failed in beiscsi_hba_alloc\n");5544 ret = -ENOMEM;5545 goto disable_pci;5546 }5547 5548 pci_save_state(pcidev);5549 5550 /* Initialize Driver configuration Paramters */5551 beiscsi_hba_attrs_init(phba);5552 5553 phba->mac_addr_set = false;5554 5555 switch (pcidev->device) {5556 case BE_DEVICE_ID1:5557 case OC_DEVICE_ID1:5558 case OC_DEVICE_ID2:5559 phba->generation = BE_GEN2;5560 phba->iotask_fn = beiscsi_iotask;5561 dev_warn(&pcidev->dev,5562 "Obsolete/Unsupported BE2 Adapter Family\n");5563 break;5564 case BE_DEVICE_ID2:5565 case OC_DEVICE_ID3:5566 phba->generation = BE_GEN3;5567 phba->iotask_fn = beiscsi_iotask;5568 break;5569 case OC_SKH_ID1:5570 phba->generation = BE_GEN4;5571 phba->iotask_fn = beiscsi_iotask_v2;5572 break;5573 default:5574 phba->generation = 0;5575 }5576 5577 ret = be_ctrl_init(phba, pcidev);5578 if (ret) {5579 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,5580 "BM_%d : be_ctrl_init failed\n");5581 goto free_hba;5582 }5583 5584 ret = beiscsi_init_sliport(phba);5585 if (ret)5586 goto free_hba;5587 5588 spin_lock_init(&phba->io_sgl_lock);5589 spin_lock_init(&phba->mgmt_sgl_lock);5590 spin_lock_init(&phba->async_pdu_lock);5591 ret = beiscsi_get_fw_config(&phba->ctrl, phba);5592 if (ret != 0) {5593 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,5594 "BM_%d : Error getting fw config\n");5595 goto free_port;5596 }5597 beiscsi_get_port_name(&phba->ctrl, phba);5598 beiscsi_get_params(phba);5599 beiscsi_set_host_data(phba);5600 beiscsi_set_uer_feature(phba);5601 5602 be2iscsi_enable_msix(phba);5603 5604 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,5605 "BM_%d : num_cpus = %d\n",5606 phba->num_cpus);5607 5608 phba->shost->max_id = phba->params.cxns_per_ctrl;5609 phba->shost->can_queue = phba->params.ios_per_ctrl;5610 ret = beiscsi_get_memory(phba);5611 if (ret < 0) {5612 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,5613 "BM_%d : alloc host mem failed\n");5614 goto free_port;5615 }5616 5617 ret = beiscsi_init_port(phba);5618 if (ret < 0) {5619 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,5620 "BM_%d : init port failed\n");5621 beiscsi_free_mem(phba);5622 goto free_port;5623 }5624 5625 for (i = 0; i < MAX_MCC_CMD; i++) {5626 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);5627 phba->ctrl.mcc_tag[i] = i + 1;5628 phba->ctrl.mcc_tag_status[i + 1] = 0;5629 phba->ctrl.mcc_tag_available++;5630 memset(&phba->ctrl.ptag_state[i].tag_mem_state, 0,5631 sizeof(struct be_dma_mem));5632 }5633 5634 phba->ctrl.mcc_alloc_index = phba->ctrl.mcc_free_index = 0;5635 5636 phba->wq = alloc_workqueue("beiscsi_%02x_wq", WQ_MEM_RECLAIM, 1,5637 phba->shost->host_no);5638 if (!phba->wq) {5639 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,5640 "BM_%d : beiscsi_dev_probe-"5641 "Failed to allocate work queue\n");5642 ret = -ENOMEM;5643 goto free_twq;5644 }5645 5646 INIT_DELAYED_WORK(&phba->eqd_update, beiscsi_eqd_update_work);5647 5648 phwi_ctrlr = phba->phwi_ctrlr;5649 phwi_context = phwi_ctrlr->phwi_ctxt;5650 5651 for (i = 0; i < phba->num_cpus; i++) {5652 pbe_eq = &phwi_context->be_eq[i];5653 irq_poll_init(&pbe_eq->iopoll, be_iopoll_budget, be_iopoll);5654 }5655 5656 i = (phba->pcidev->msix_enabled) ? i : 0;5657 /* Work item for MCC handling */5658 pbe_eq = &phwi_context->be_eq[i];5659 INIT_WORK(&pbe_eq->mcc_work, beiscsi_mcc_work);5660 5661 ret = beiscsi_init_irqs(phba);5662 if (ret < 0) {5663 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,5664 "BM_%d : beiscsi_dev_probe-"5665 "Failed to beiscsi_init_irqs\n");5666 goto disable_iopoll;5667 }5668 hwi_enable_intr(phba);5669 5670 ret = iscsi_host_add(phba->shost, &phba->pcidev->dev);5671 if (ret)5672 goto free_irqs;5673 5674 /* set online bit after port is operational */5675 set_bit(BEISCSI_HBA_ONLINE, &phba->state);5676 __beiscsi_log(phba, KERN_INFO,5677 "BM_%d : port online: 0x%lx\n", phba->state);5678 5679 INIT_WORK(&phba->boot_work, beiscsi_boot_work);5680 ret = beiscsi_boot_get_shandle(phba, &s_handle);5681 if (ret > 0) {5682 beiscsi_start_boot_work(phba, s_handle);5683 /**5684 * Set this bit after starting the work to let5685 * probe handle it first.5686 * ASYNC event can too schedule this work.5687 */5688 set_bit(BEISCSI_HBA_BOOT_FOUND, &phba->state);5689 }5690 5691 beiscsi_iface_create_default(phba);5692 schedule_delayed_work(&phba->eqd_update,5693 msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));5694 5695 INIT_WORK(&phba->sess_work, beiscsi_sess_work);5696 INIT_DELAYED_WORK(&phba->recover_port, beiscsi_recover_port);5697 /**5698 * Start UE detection here. UE before this will cause stall in probe5699 * and eventually fail the probe.5700 */5701 timer_setup(&phba->hw_check, beiscsi_hw_health_check, 0);5702 mod_timer(&phba->hw_check,5703 jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));5704 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,5705 "\n\n\n BM_%d : SUCCESS - DRIVER LOADED\n\n\n");5706 return 0;5707 5708free_irqs:5709 hwi_disable_intr(phba);5710 beiscsi_free_irqs(phba);5711disable_iopoll:5712 for (i = 0; i < phba->num_cpus; i++) {5713 pbe_eq = &phwi_context->be_eq[i];5714 irq_poll_disable(&pbe_eq->iopoll);5715 }5716 destroy_workqueue(phba->wq);5717free_twq:5718 hwi_cleanup_port(phba);5719 beiscsi_cleanup_port(phba);5720 beiscsi_free_mem(phba);5721free_port:5722 dma_free_coherent(&phba->pcidev->dev,5723 phba->ctrl.mbox_mem_alloced.size,5724 phba->ctrl.mbox_mem_alloced.va,5725 phba->ctrl.mbox_mem_alloced.dma);5726 beiscsi_unmap_pci_function(phba);5727free_hba:5728 pci_disable_msix(phba->pcidev);5729 pci_dev_put(phba->pcidev);5730 iscsi_host_free(phba->shost);5731 pci_set_drvdata(pcidev, NULL);5732disable_pci:5733 pci_release_regions(pcidev);5734 pci_disable_device(pcidev);5735 return ret;5736}5737 5738static void beiscsi_remove(struct pci_dev *pcidev)5739{5740 struct beiscsi_hba *phba = NULL;5741 5742 phba = pci_get_drvdata(pcidev);5743 if (!phba) {5744 dev_err(&pcidev->dev, "beiscsi_remove called with no phba\n");5745 return;5746 }5747 5748 /* first stop UE detection before unloading */5749 del_timer_sync(&phba->hw_check);5750 cancel_delayed_work_sync(&phba->recover_port);5751 cancel_work_sync(&phba->sess_work);5752 5753 beiscsi_iface_destroy_default(phba);5754 iscsi_host_remove(phba->shost, false);5755 beiscsi_disable_port(phba, 1);5756 5757 /* after cancelling boot_work */5758 iscsi_boot_destroy_kset(phba->boot_struct.boot_kset);5759 5760 /* free all resources */5761 destroy_workqueue(phba->wq);5762 beiscsi_free_mem(phba);5763 5764 /* ctrl uninit */5765 beiscsi_unmap_pci_function(phba);5766 dma_free_coherent(&phba->pcidev->dev,5767 phba->ctrl.mbox_mem_alloced.size,5768 phba->ctrl.mbox_mem_alloced.va,5769 phba->ctrl.mbox_mem_alloced.dma);5770 5771 pci_dev_put(phba->pcidev);5772 iscsi_host_free(phba->shost);5773 pci_set_drvdata(pcidev, NULL);5774 pci_release_regions(pcidev);5775 pci_disable_device(pcidev);5776}5777 5778 5779static struct pci_error_handlers beiscsi_eeh_handlers = {5780 .error_detected = beiscsi_eeh_err_detected,5781 .slot_reset = beiscsi_eeh_reset,5782 .resume = beiscsi_eeh_resume,5783};5784 5785struct iscsi_transport beiscsi_iscsi_transport = {5786 .owner = THIS_MODULE,5787 .name = DRV_NAME,5788 .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_TEXT_NEGO |5789 CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD,5790 .create_session = beiscsi_session_create,5791 .destroy_session = beiscsi_session_destroy,5792 .create_conn = beiscsi_conn_create,5793 .bind_conn = beiscsi_conn_bind,5794 .unbind_conn = iscsi_conn_unbind,5795 .destroy_conn = iscsi_conn_teardown,5796 .attr_is_visible = beiscsi_attr_is_visible,5797 .set_iface_param = beiscsi_iface_set_param,5798 .get_iface_param = beiscsi_iface_get_param,5799 .set_param = beiscsi_set_param,5800 .get_conn_param = iscsi_conn_get_param,5801 .get_session_param = iscsi_session_get_param,5802 .get_host_param = beiscsi_get_host_param,5803 .start_conn = beiscsi_conn_start,5804 .stop_conn = iscsi_conn_stop,5805 .send_pdu = iscsi_conn_send_pdu,5806 .xmit_task = beiscsi_task_xmit,5807 .cleanup_task = beiscsi_cleanup_task,5808 .alloc_pdu = beiscsi_alloc_pdu,5809 .parse_pdu_itt = beiscsi_parse_pdu,5810 .get_stats = beiscsi_conn_get_stats,5811 .get_ep_param = beiscsi_ep_get_param,5812 .ep_connect = beiscsi_ep_connect,5813 .ep_poll = beiscsi_ep_poll,5814 .ep_disconnect = beiscsi_ep_disconnect,5815 .session_recovery_timedout = iscsi_session_recovery_timedout,5816 .bsg_request = beiscsi_bsg_request,5817};5818 5819static struct pci_driver beiscsi_pci_driver = {5820 .name = DRV_NAME,5821 .probe = beiscsi_dev_probe,5822 .remove = beiscsi_remove,5823 .id_table = beiscsi_pci_id_table,5824 .err_handler = &beiscsi_eeh_handlers5825};5826 5827static int __init beiscsi_module_init(void)5828{5829 int ret;5830 5831 beiscsi_scsi_transport =5832 iscsi_register_transport(&beiscsi_iscsi_transport);5833 if (!beiscsi_scsi_transport) {5834 printk(KERN_ERR5835 "beiscsi_module_init - Unable to register beiscsi transport.\n");5836 return -ENOMEM;5837 }5838 printk(KERN_INFO "In beiscsi_module_init, tt=%p\n",5839 &beiscsi_iscsi_transport);5840 5841 ret = pci_register_driver(&beiscsi_pci_driver);5842 if (ret) {5843 printk(KERN_ERR5844 "beiscsi_module_init - Unable to register beiscsi pci driver.\n");5845 goto unregister_iscsi_transport;5846 }5847 return 0;5848 5849unregister_iscsi_transport:5850 iscsi_unregister_transport(&beiscsi_iscsi_transport);5851 return ret;5852}5853 5854static void __exit beiscsi_module_exit(void)5855{5856 pci_unregister_driver(&beiscsi_pci_driver);5857 iscsi_unregister_transport(&beiscsi_iscsi_transport);5858}5859 5860module_init(beiscsi_module_init);5861module_exit(beiscsi_module_exit);5862