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1/*******************************************************************2 * This file is part of the Emulex Linux Device Driver for *3 * Fibre Channel Host Bus Adapters. *4 * Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term *5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *6 * Copyright (C) 2004-2014 Emulex. All rights reserved. *7 * EMULEX and SLI are trademarks of Emulex. *8 * www.broadcom.com *9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *10 * *11 * This program is free software; you can redistribute it and/or *12 * modify it under the terms of version 2 of the GNU General *13 * Public License as published by the Free Software Foundation. *14 * This program is distributed in the hope that it will be useful. *15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *19 * TO BE LEGALLY INVALID. See the GNU General Public License for *20 * more details, a copy of which can be found in the file COPYING *21 * included with this package. *22 *******************************************************************/23 24#include <linux/mempool.h>25#include <linux/slab.h>26#include <linux/pci.h>27#include <linux/interrupt.h>28 29#include <scsi/scsi.h>30#include <scsi/scsi_device.h>31#include <scsi/scsi_transport_fc.h>32#include <scsi/fc/fc_fs.h>33 34#include "lpfc_hw4.h"35#include "lpfc_hw.h"36#include "lpfc_sli.h"37#include "lpfc_sli4.h"38#include "lpfc_nl.h"39#include "lpfc_disc.h"40#include "lpfc.h"41#include "lpfc_scsi.h"42#include "lpfc_crtn.h"43#include "lpfc_logmsg.h"44 45#define LPFC_MBUF_POOL_SIZE 64 /* max elements in MBUF safety pool */46#define LPFC_MEM_POOL_SIZE 64 /* max elem in non-DMA safety pool */47#define LPFC_DEVICE_DATA_POOL_SIZE 64 /* max elements in device data pool */48#define LPFC_RRQ_POOL_SIZE 256 /* max elements in non-DMA pool */49#define LPFC_MBX_POOL_SIZE 256 /* max elements in MBX non-DMA pool */50 51/* lpfc_mbox_free_sli_mbox52 *53 * @phba: HBA to free memory for54 * @mbox: mailbox command to free55 *56 * This routine detects the mbox type and calls the correct57 * free routine to fully release all associated memory.58 */59static void60lpfc_mem_free_sli_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox)61{62 /* Detect if the caller's mbox is an SLI4_CONFIG type. If so, this63 * mailbox type requires a different cleanup routine. Otherwise, the64 * mailbox is just an mbuf and mem_pool release.65 */66 if (phba->sli_rev == LPFC_SLI_REV4 &&67 bf_get(lpfc_mqe_command, &mbox->u.mqe) == MBX_SLI4_CONFIG) {68 lpfc_sli4_mbox_cmd_free(phba, mbox);69 } else {70 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);71 }72}73 74int75lpfc_mem_alloc_active_rrq_pool_s4(struct lpfc_hba *phba) {76 size_t bytes;77 int max_xri = phba->sli4_hba.max_cfg_param.max_xri;78 79 if (max_xri <= 0)80 return -ENOMEM;81 bytes = ((BITS_PER_LONG - 1 + max_xri) / BITS_PER_LONG) *82 sizeof(unsigned long);83 phba->cfg_rrq_xri_bitmap_sz = bytes;84 phba->active_rrq_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE,85 bytes);86 if (!phba->active_rrq_pool)87 return -ENOMEM;88 else89 return 0;90}91 92/**93 * lpfc_mem_alloc - create and allocate all PCI and memory pools94 * @phba: HBA to allocate pools for95 * @align: alignment requirement for blocks; must be a power of two96 *97 * Description: Creates and allocates PCI pools lpfc_mbuf_pool,98 * lpfc_hrb_pool. Creates and allocates kmalloc-backed mempools99 * for LPFC_MBOXQ_t and lpfc_nodelist. Also allocates the VPI bitmask.100 *101 * Notes: Not interrupt-safe. Must be called with no locks held. If any102 * allocation fails, frees all successfully allocated memory before returning.103 *104 * Returns:105 * 0 on success106 * -ENOMEM on failure (if any memory allocations fail)107 **/108int109lpfc_mem_alloc(struct lpfc_hba *phba, int align)110{111 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;112 int i;113 114 115 phba->lpfc_mbuf_pool = dma_pool_create("lpfc_mbuf_pool", &phba->pcidev->dev,116 LPFC_BPL_SIZE,117 align, 0);118 if (!phba->lpfc_mbuf_pool)119 goto fail;120 121 pool->elements = kmalloc_array(LPFC_MBUF_POOL_SIZE,122 sizeof(struct lpfc_dmabuf),123 GFP_KERNEL);124 if (!pool->elements)125 goto fail_free_lpfc_mbuf_pool;126 127 pool->max_count = 0;128 pool->current_count = 0;129 for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) {130 pool->elements[i].virt = dma_pool_alloc(phba->lpfc_mbuf_pool,131 GFP_KERNEL, &pool->elements[i].phys);132 if (!pool->elements[i].virt)133 goto fail_free_mbuf_pool;134 pool->max_count++;135 pool->current_count++;136 }137 138 phba->mbox_mem_pool = mempool_create_kmalloc_pool(LPFC_MBX_POOL_SIZE,139 sizeof(LPFC_MBOXQ_t));140 if (!phba->mbox_mem_pool)141 goto fail_free_mbuf_pool;142 143 phba->nlp_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE,144 sizeof(struct lpfc_nodelist));145 if (!phba->nlp_mem_pool)146 goto fail_free_mbox_pool;147 148 if (phba->sli_rev == LPFC_SLI_REV4) {149 phba->rrq_pool =150 mempool_create_kmalloc_pool(LPFC_RRQ_POOL_SIZE,151 sizeof(struct lpfc_node_rrq));152 if (!phba->rrq_pool)153 goto fail_free_nlp_mem_pool;154 phba->lpfc_hrb_pool = dma_pool_create("lpfc_hrb_pool",155 &phba->pcidev->dev,156 LPFC_HDR_BUF_SIZE, align, 0);157 if (!phba->lpfc_hrb_pool)158 goto fail_free_rrq_mem_pool;159 160 phba->lpfc_drb_pool = dma_pool_create("lpfc_drb_pool",161 &phba->pcidev->dev,162 LPFC_DATA_BUF_SIZE, align, 0);163 if (!phba->lpfc_drb_pool)164 goto fail_free_hrb_pool;165 phba->lpfc_hbq_pool = NULL;166 } else {167 phba->lpfc_hbq_pool = dma_pool_create("lpfc_hbq_pool",168 &phba->pcidev->dev, LPFC_BPL_SIZE, align, 0);169 if (!phba->lpfc_hbq_pool)170 goto fail_free_nlp_mem_pool;171 phba->lpfc_hrb_pool = NULL;172 phba->lpfc_drb_pool = NULL;173 }174 175 if (phba->cfg_EnableXLane) {176 phba->device_data_mem_pool = mempool_create_kmalloc_pool(177 LPFC_DEVICE_DATA_POOL_SIZE,178 sizeof(struct lpfc_device_data));179 if (!phba->device_data_mem_pool)180 goto fail_free_drb_pool;181 } else {182 phba->device_data_mem_pool = NULL;183 }184 185 return 0;186fail_free_drb_pool:187 dma_pool_destroy(phba->lpfc_drb_pool);188 phba->lpfc_drb_pool = NULL;189 fail_free_hrb_pool:190 dma_pool_destroy(phba->lpfc_hrb_pool);191 phba->lpfc_hrb_pool = NULL;192 fail_free_rrq_mem_pool:193 mempool_destroy(phba->rrq_pool);194 phba->rrq_pool = NULL;195 fail_free_nlp_mem_pool:196 mempool_destroy(phba->nlp_mem_pool);197 phba->nlp_mem_pool = NULL;198 fail_free_mbox_pool:199 mempool_destroy(phba->mbox_mem_pool);200 phba->mbox_mem_pool = NULL;201 fail_free_mbuf_pool:202 while (i--)203 dma_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,204 pool->elements[i].phys);205 kfree(pool->elements);206 fail_free_lpfc_mbuf_pool:207 dma_pool_destroy(phba->lpfc_mbuf_pool);208 phba->lpfc_mbuf_pool = NULL;209 fail:210 return -ENOMEM;211}212 213int214lpfc_nvmet_mem_alloc(struct lpfc_hba *phba)215{216 phba->lpfc_nvmet_drb_pool =217 dma_pool_create("lpfc_nvmet_drb_pool",218 &phba->pcidev->dev, LPFC_NVMET_DATA_BUF_SIZE,219 SGL_ALIGN_SZ, 0);220 if (!phba->lpfc_nvmet_drb_pool) {221 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,222 "6024 Can't enable NVME Target - no memory\n");223 return -ENOMEM;224 }225 return 0;226}227 228/**229 * lpfc_mem_free - Frees memory allocated by lpfc_mem_alloc230 * @phba: HBA to free memory for231 *232 * Description: Free the memory allocated by lpfc_mem_alloc routine. This233 * routine is a the counterpart of lpfc_mem_alloc.234 *235 * Returns: None236 **/237void238lpfc_mem_free(struct lpfc_hba *phba)239{240 int i;241 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;242 struct lpfc_device_data *device_data;243 244 /* Free HBQ pools */245 lpfc_sli_hbqbuf_free_all(phba);246 dma_pool_destroy(phba->lpfc_nvmet_drb_pool);247 phba->lpfc_nvmet_drb_pool = NULL;248 249 dma_pool_destroy(phba->lpfc_drb_pool);250 phba->lpfc_drb_pool = NULL;251 252 dma_pool_destroy(phba->lpfc_hrb_pool);253 phba->lpfc_hrb_pool = NULL;254 255 dma_pool_destroy(phba->lpfc_hbq_pool);256 phba->lpfc_hbq_pool = NULL;257 258 mempool_destroy(phba->rrq_pool);259 phba->rrq_pool = NULL;260 261 /* Free NLP memory pool */262 mempool_destroy(phba->nlp_mem_pool);263 phba->nlp_mem_pool = NULL;264 if (phba->sli_rev == LPFC_SLI_REV4 && phba->active_rrq_pool) {265 mempool_destroy(phba->active_rrq_pool);266 phba->active_rrq_pool = NULL;267 }268 269 /* Free mbox memory pool */270 mempool_destroy(phba->mbox_mem_pool);271 phba->mbox_mem_pool = NULL;272 273 /* Free MBUF memory pool */274 for (i = 0; i < pool->current_count; i++)275 dma_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,276 pool->elements[i].phys);277 kfree(pool->elements);278 279 dma_pool_destroy(phba->lpfc_mbuf_pool);280 phba->lpfc_mbuf_pool = NULL;281 282 /* Free Device Data memory pool */283 if (phba->device_data_mem_pool) {284 /* Ensure all objects have been returned to the pool */285 while (!list_empty(&phba->luns)) {286 device_data = list_first_entry(&phba->luns,287 struct lpfc_device_data,288 listentry);289 list_del(&device_data->listentry);290 mempool_free(device_data, phba->device_data_mem_pool);291 }292 mempool_destroy(phba->device_data_mem_pool);293 }294 phba->device_data_mem_pool = NULL;295 return;296}297 298/**299 * lpfc_mem_free_all - Frees all PCI and driver memory300 * @phba: HBA to free memory for301 *302 * Description: Free memory from PCI and driver memory pools and also those303 * used : lpfc_sg_dma_buf_pool, lpfc_mbuf_pool, lpfc_hrb_pool. Frees304 * kmalloc-backed mempools for LPFC_MBOXQ_t and lpfc_nodelist. Also frees305 * the VPI bitmask.306 *307 * Returns: None308 **/309void310lpfc_mem_free_all(struct lpfc_hba *phba)311{312 struct lpfc_sli *psli = &phba->sli;313 LPFC_MBOXQ_t *mbox, *next_mbox;314 315 /* Free memory used in mailbox queue back to mailbox memory pool */316 list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) {317 list_del(&mbox->list);318 lpfc_mem_free_sli_mbox(phba, mbox);319 }320 /* Free memory used in mailbox cmpl list back to mailbox memory pool */321 list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) {322 list_del(&mbox->list);323 lpfc_mem_free_sli_mbox(phba, mbox);324 }325 /* Free the active mailbox command back to the mailbox memory pool */326 spin_lock_irq(&phba->hbalock);327 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;328 spin_unlock_irq(&phba->hbalock);329 if (psli->mbox_active) {330 mbox = psli->mbox_active;331 lpfc_mem_free_sli_mbox(phba, mbox);332 psli->mbox_active = NULL;333 }334 335 /* Free and destroy all the allocated memory pools */336 lpfc_mem_free(phba);337 338 /* Free DMA buffer memory pool */339 dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);340 phba->lpfc_sg_dma_buf_pool = NULL;341 342 dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool);343 phba->lpfc_cmd_rsp_buf_pool = NULL;344 345 /* Free Congestion Data buffer */346 if (phba->cgn_i) {347 dma_free_coherent(&phba->pcidev->dev,348 sizeof(struct lpfc_cgn_info),349 phba->cgn_i->virt, phba->cgn_i->phys);350 kfree(phba->cgn_i);351 phba->cgn_i = NULL;352 }353 354 /* Free RX Monitor */355 if (phba->rx_monitor) {356 lpfc_rx_monitor_destroy_ring(phba->rx_monitor);357 kfree(phba->rx_monitor);358 phba->rx_monitor = NULL;359 }360 361 /* Free the iocb lookup array */362 kfree(psli->iocbq_lookup);363 psli->iocbq_lookup = NULL;364 365 return;366}367 368/**369 * lpfc_mbuf_alloc - Allocate an mbuf from the lpfc_mbuf_pool PCI pool370 * @phba: HBA which owns the pool to allocate from371 * @mem_flags: indicates if this is a priority (MEM_PRI) allocation372 * @handle: used to return the DMA-mapped address of the mbuf373 *374 * Description: Allocates a DMA-mapped buffer from the lpfc_mbuf_pool PCI pool.375 * Allocates from generic dma_pool_alloc function first and if that fails and376 * mem_flags has MEM_PRI set (the only defined flag), returns an mbuf from the377 * HBA's pool.378 *379 * Notes: Not interrupt-safe. Must be called with no locks held. Takes380 * phba->hbalock.381 *382 * Returns:383 * pointer to the allocated mbuf on success384 * NULL on failure385 **/386void *387lpfc_mbuf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle)388{389 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;390 unsigned long iflags;391 void *ret;392 393 ret = dma_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle);394 395 spin_lock_irqsave(&phba->hbalock, iflags);396 if (!ret && (mem_flags & MEM_PRI) && pool->current_count) {397 pool->current_count--;398 ret = pool->elements[pool->current_count].virt;399 *handle = pool->elements[pool->current_count].phys;400 }401 spin_unlock_irqrestore(&phba->hbalock, iflags);402 return ret;403}404 405/**406 * __lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (locked)407 * @phba: HBA which owns the pool to return to408 * @virt: mbuf to free409 * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed410 *411 * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if412 * it is below its max_count, frees the mbuf otherwise.413 *414 * Notes: Must be called with phba->hbalock held to synchronize access to415 * lpfc_mbuf_safety_pool.416 *417 * Returns: None418 **/419void420__lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)421{422 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;423 424 if (pool->current_count < pool->max_count) {425 pool->elements[pool->current_count].virt = virt;426 pool->elements[pool->current_count].phys = dma;427 pool->current_count++;428 } else {429 dma_pool_free(phba->lpfc_mbuf_pool, virt, dma);430 }431 return;432}433 434/**435 * lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (unlocked)436 * @phba: HBA which owns the pool to return to437 * @virt: mbuf to free438 * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed439 *440 * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if441 * it is below its max_count, frees the mbuf otherwise.442 *443 * Notes: Takes phba->hbalock. Can be called with or without other locks held.444 *445 * Returns: None446 **/447void448lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)449{450 unsigned long iflags;451 452 spin_lock_irqsave(&phba->hbalock, iflags);453 __lpfc_mbuf_free(phba, virt, dma);454 spin_unlock_irqrestore(&phba->hbalock, iflags);455 return;456}457 458/**459 * lpfc_nvmet_buf_alloc - Allocate an nvmet_buf from the460 * lpfc_sg_dma_buf_pool PCI pool461 * @phba: HBA which owns the pool to allocate from462 * @mem_flags: indicates if this is a priority (MEM_PRI) allocation463 * @handle: used to return the DMA-mapped address of the nvmet_buf464 *465 * Description: Allocates a DMA-mapped buffer from the lpfc_sg_dma_buf_pool466 * PCI pool. Allocates from generic dma_pool_alloc function.467 *468 * Returns:469 * pointer to the allocated nvmet_buf on success470 * NULL on failure471 **/472void *473lpfc_nvmet_buf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle)474{475 void *ret;476 477 ret = dma_pool_alloc(phba->lpfc_sg_dma_buf_pool, GFP_KERNEL, handle);478 return ret;479}480 481/**482 * lpfc_nvmet_buf_free - Free an nvmet_buf from the lpfc_sg_dma_buf_pool483 * PCI pool484 * @phba: HBA which owns the pool to return to485 * @virt: nvmet_buf to free486 * @dma: the DMA-mapped address of the lpfc_sg_dma_buf_pool to be freed487 *488 * Returns: None489 **/490void491lpfc_nvmet_buf_free(struct lpfc_hba *phba, void *virt, dma_addr_t dma)492{493 dma_pool_free(phba->lpfc_sg_dma_buf_pool, virt, dma);494}495 496/**497 * lpfc_els_hbq_alloc - Allocate an HBQ buffer498 * @phba: HBA to allocate HBQ buffer for499 *500 * Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hrb_pool PCI501 * pool along a non-DMA-mapped container for it.502 *503 * Notes: Not interrupt-safe. Must be called with no locks held.504 *505 * Returns:506 * pointer to HBQ on success507 * NULL on failure508 **/509struct hbq_dmabuf *510lpfc_els_hbq_alloc(struct lpfc_hba *phba)511{512 struct hbq_dmabuf *hbqbp;513 514 hbqbp = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL);515 if (!hbqbp)516 return NULL;517 518 hbqbp->dbuf.virt = dma_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL,519 &hbqbp->dbuf.phys);520 if (!hbqbp->dbuf.virt) {521 kfree(hbqbp);522 return NULL;523 }524 hbqbp->total_size = LPFC_BPL_SIZE;525 return hbqbp;526}527 528/**529 * lpfc_els_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc530 * @phba: HBA buffer was allocated for531 * @hbqbp: HBQ container returned by lpfc_els_hbq_alloc532 *533 * Description: Frees both the container and the DMA-mapped buffer returned by534 * lpfc_els_hbq_alloc.535 *536 * Notes: Can be called with or without locks held.537 *538 * Returns: None539 **/540void541lpfc_els_hbq_free(struct lpfc_hba *phba, struct hbq_dmabuf *hbqbp)542{543 dma_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys);544 kfree(hbqbp);545 return;546}547 548/**549 * lpfc_sli4_rb_alloc - Allocate an SLI4 Receive buffer550 * @phba: HBA to allocate a receive buffer for551 *552 * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI553 * pool along a non-DMA-mapped container for it.554 *555 * Notes: Not interrupt-safe. Must be called with no locks held.556 *557 * Returns:558 * pointer to HBQ on success559 * NULL on failure560 **/561struct hbq_dmabuf *562lpfc_sli4_rb_alloc(struct lpfc_hba *phba)563{564 struct hbq_dmabuf *dma_buf;565 566 dma_buf = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL);567 if (!dma_buf)568 return NULL;569 570 dma_buf->hbuf.virt = dma_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL,571 &dma_buf->hbuf.phys);572 if (!dma_buf->hbuf.virt) {573 kfree(dma_buf);574 return NULL;575 }576 dma_buf->dbuf.virt = dma_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL,577 &dma_buf->dbuf.phys);578 if (!dma_buf->dbuf.virt) {579 dma_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt,580 dma_buf->hbuf.phys);581 kfree(dma_buf);582 return NULL;583 }584 dma_buf->total_size = LPFC_DATA_BUF_SIZE;585 return dma_buf;586}587 588/**589 * lpfc_sli4_rb_free - Frees a receive buffer590 * @phba: HBA buffer was allocated for591 * @dmab: DMA Buffer container returned by lpfc_sli4_hbq_alloc592 *593 * Description: Frees both the container and the DMA-mapped buffers returned by594 * lpfc_sli4_rb_alloc.595 *596 * Notes: Can be called with or without locks held.597 *598 * Returns: None599 **/600void601lpfc_sli4_rb_free(struct lpfc_hba *phba, struct hbq_dmabuf *dmab)602{603 dma_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys);604 dma_pool_free(phba->lpfc_drb_pool, dmab->dbuf.virt, dmab->dbuf.phys);605 kfree(dmab);606}607 608/**609 * lpfc_sli4_nvmet_alloc - Allocate an SLI4 Receive buffer610 * @phba: HBA to allocate a receive buffer for611 *612 * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI613 * pool along a non-DMA-mapped container for it.614 *615 * Returns:616 * pointer to HBQ on success617 * NULL on failure618 **/619struct rqb_dmabuf *620lpfc_sli4_nvmet_alloc(struct lpfc_hba *phba)621{622 struct rqb_dmabuf *dma_buf;623 624 dma_buf = kzalloc(sizeof(*dma_buf), GFP_KERNEL);625 if (!dma_buf)626 return NULL;627 628 dma_buf->hbuf.virt = dma_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL,629 &dma_buf->hbuf.phys);630 if (!dma_buf->hbuf.virt) {631 kfree(dma_buf);632 return NULL;633 }634 dma_buf->dbuf.virt = dma_pool_alloc(phba->lpfc_nvmet_drb_pool,635 GFP_KERNEL, &dma_buf->dbuf.phys);636 if (!dma_buf->dbuf.virt) {637 dma_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt,638 dma_buf->hbuf.phys);639 kfree(dma_buf);640 return NULL;641 }642 dma_buf->total_size = LPFC_NVMET_DATA_BUF_SIZE;643 return dma_buf;644}645 646/**647 * lpfc_sli4_nvmet_free - Frees a receive buffer648 * @phba: HBA buffer was allocated for649 * @dmab: DMA Buffer container returned by lpfc_sli4_rbq_alloc650 *651 * Description: Frees both the container and the DMA-mapped buffers returned by652 * lpfc_sli4_nvmet_alloc.653 *654 * Notes: Can be called with or without locks held.655 *656 * Returns: None657 **/658void659lpfc_sli4_nvmet_free(struct lpfc_hba *phba, struct rqb_dmabuf *dmab)660{661 dma_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys);662 dma_pool_free(phba->lpfc_nvmet_drb_pool,663 dmab->dbuf.virt, dmab->dbuf.phys);664 kfree(dmab);665}666 667/**668 * lpfc_in_buf_free - Free a DMA buffer669 * @phba: HBA buffer is associated with670 * @mp: Buffer to free671 *672 * Description: Frees the given DMA buffer in the appropriate way given if the673 * HBA is running in SLI3 mode with HBQs enabled.674 *675 * Notes: Takes phba->hbalock. Can be called with or without other locks held.676 *677 * Returns: None678 **/679void680lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp)681{682 struct hbq_dmabuf *hbq_entry;683 unsigned long flags;684 685 if (!mp)686 return;687 688 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {689 hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf);690 /* Check whether HBQ is still in use */691 spin_lock_irqsave(&phba->hbalock, flags);692 if (!phba->hbq_in_use) {693 spin_unlock_irqrestore(&phba->hbalock, flags);694 return;695 }696 list_del(&hbq_entry->dbuf.list);697 if (hbq_entry->tag == -1) {698 (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer)699 (phba, hbq_entry);700 } else {701 lpfc_sli_free_hbq(phba, hbq_entry);702 }703 spin_unlock_irqrestore(&phba->hbalock, flags);704 } else {705 lpfc_mbuf_free(phba, mp->virt, mp->phys);706 kfree(mp);707 }708 return;709}710 711/**712 * lpfc_rq_buf_free - Free a RQ DMA buffer713 * @phba: HBA buffer is associated with714 * @mp: Buffer to free715 *716 * Description: Frees the given DMA buffer in the appropriate way given by717 * reposting it to its associated RQ so it can be reused.718 *719 * Notes: Takes phba->hbalock. Can be called with or without other locks held.720 *721 * Returns: None722 **/723void724lpfc_rq_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp)725{726 struct lpfc_rqb *rqbp;727 struct lpfc_rqe hrqe;728 struct lpfc_rqe drqe;729 struct rqb_dmabuf *rqb_entry;730 unsigned long flags;731 int rc;732 733 if (!mp)734 return;735 736 rqb_entry = container_of(mp, struct rqb_dmabuf, hbuf);737 rqbp = rqb_entry->hrq->rqbp;738 739 spin_lock_irqsave(&phba->hbalock, flags);740 list_del(&rqb_entry->hbuf.list);741 hrqe.address_lo = putPaddrLow(rqb_entry->hbuf.phys);742 hrqe.address_hi = putPaddrHigh(rqb_entry->hbuf.phys);743 drqe.address_lo = putPaddrLow(rqb_entry->dbuf.phys);744 drqe.address_hi = putPaddrHigh(rqb_entry->dbuf.phys);745 rc = lpfc_sli4_rq_put(rqb_entry->hrq, rqb_entry->drq, &hrqe, &drqe);746 if (rc < 0) {747 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,748 "6409 Cannot post to HRQ %d: %x %x %x "749 "DRQ %x %x\n",750 rqb_entry->hrq->queue_id,751 rqb_entry->hrq->host_index,752 rqb_entry->hrq->hba_index,753 rqb_entry->hrq->entry_count,754 rqb_entry->drq->host_index,755 rqb_entry->drq->hba_index);756 (rqbp->rqb_free_buffer)(phba, rqb_entry);757 } else {758 list_add_tail(&rqb_entry->hbuf.list, &rqbp->rqb_buffer_list);759 rqbp->buffer_count++;760 }761 762 spin_unlock_irqrestore(&phba->hbalock, flags);763}764