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_mbox 52 * 53 * @phba: HBA to free memory for 54 * @mbox: mailbox command to free 55 * 56 * This routine detects the mbox type and calls the correct 57 * free routine to fully release all associated memory. 58 */ 59 static void 60 lpfc_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, this 63 * mailbox type requires a different cleanup routine. Otherwise, the 64 * 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 74 int 75 lpfc_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 else 89 return 0; 90 } 91 92 /** 93 * lpfc_mem_alloc - create and allocate all PCI and memory pools 94 * @phba: HBA to allocate pools for 95 * @align: alignment requirement for blocks; must be a power of two 96 * 97 * Description: Creates and allocates PCI pools lpfc_mbuf_pool, 98 * lpfc_hrb_pool. Creates and allocates kmalloc-backed mempools 99 * 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 any 102 * allocation fails, frees all successfully allocated memory before returning. 103 * 104 * Returns: 105 * 0 on success 106 * -ENOMEM on failure (if any memory allocations fail) 107 **/ 108 int 109 lpfc_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_objs(struct lpfc_dmabuf, LPFC_MBUF_POOL_SIZE, 122 GFP_KERNEL); 123 if (!pool->elements) 124 goto fail_free_lpfc_mbuf_pool; 125 126 pool->max_count = 0; 127 pool->current_count = 0; 128 for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) { 129 pool->elements[i].virt = dma_pool_alloc(phba->lpfc_mbuf_pool, 130 GFP_KERNEL, &pool->elements[i].phys); 131 if (!pool->elements[i].virt) 132 goto fail_free_mbuf_pool; 133 pool->max_count++; 134 pool->current_count++; 135 } 136 137 phba->mbox_mem_pool = mempool_create_kmalloc_pool(LPFC_MBX_POOL_SIZE, 138 sizeof(LPFC_MBOXQ_t)); 139 if (!phba->mbox_mem_pool) 140 goto fail_free_mbuf_pool; 141 142 phba->nlp_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, 143 sizeof(struct lpfc_nodelist)); 144 if (!phba->nlp_mem_pool) 145 goto fail_free_mbox_pool; 146 147 if (phba->sli_rev == LPFC_SLI_REV4) { 148 phba->rrq_pool = 149 mempool_create_kmalloc_pool(LPFC_RRQ_POOL_SIZE, 150 sizeof(struct lpfc_node_rrq)); 151 if (!phba->rrq_pool) 152 goto fail_free_nlp_mem_pool; 153 phba->lpfc_hrb_pool = dma_pool_create("lpfc_hrb_pool", 154 &phba->pcidev->dev, 155 LPFC_HDR_BUF_SIZE, align, 0); 156 if (!phba->lpfc_hrb_pool) 157 goto fail_free_rrq_mem_pool; 158 159 phba->lpfc_drb_pool = dma_pool_create("lpfc_drb_pool", 160 &phba->pcidev->dev, 161 LPFC_DATA_BUF_SIZE, align, 0); 162 if (!phba->lpfc_drb_pool) 163 goto fail_free_hrb_pool; 164 phba->lpfc_hbq_pool = NULL; 165 } else { 166 phba->lpfc_hbq_pool = dma_pool_create("lpfc_hbq_pool", 167 &phba->pcidev->dev, LPFC_BPL_SIZE, align, 0); 168 if (!phba->lpfc_hbq_pool) 169 goto fail_free_nlp_mem_pool; 170 phba->lpfc_hrb_pool = NULL; 171 phba->lpfc_drb_pool = NULL; 172 } 173 174 if (phba->cfg_EnableXLane) { 175 phba->device_data_mem_pool = mempool_create_kmalloc_pool( 176 LPFC_DEVICE_DATA_POOL_SIZE, 177 sizeof(struct lpfc_device_data)); 178 if (!phba->device_data_mem_pool) 179 goto fail_free_drb_pool; 180 } else { 181 phba->device_data_mem_pool = NULL; 182 } 183 184 return 0; 185 fail_free_drb_pool: 186 dma_pool_destroy(phba->lpfc_drb_pool); 187 phba->lpfc_drb_pool = NULL; 188 fail_free_hrb_pool: 189 dma_pool_destroy(phba->lpfc_hrb_pool); 190 phba->lpfc_hrb_pool = NULL; 191 fail_free_rrq_mem_pool: 192 mempool_destroy(phba->rrq_pool); 193 phba->rrq_pool = NULL; 194 fail_free_nlp_mem_pool: 195 mempool_destroy(phba->nlp_mem_pool); 196 phba->nlp_mem_pool = NULL; 197 fail_free_mbox_pool: 198 mempool_destroy(phba->mbox_mem_pool); 199 phba->mbox_mem_pool = NULL; 200 fail_free_mbuf_pool: 201 while (i--) 202 dma_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, 203 pool->elements[i].phys); 204 kfree(pool->elements); 205 fail_free_lpfc_mbuf_pool: 206 dma_pool_destroy(phba->lpfc_mbuf_pool); 207 phba->lpfc_mbuf_pool = NULL; 208 fail: 209 return -ENOMEM; 210 } 211 212 int 213 lpfc_nvmet_mem_alloc(struct lpfc_hba *phba) 214 { 215 phba->lpfc_nvmet_drb_pool = 216 dma_pool_create("lpfc_nvmet_drb_pool", 217 &phba->pcidev->dev, LPFC_NVMET_DATA_BUF_SIZE, 218 SGL_ALIGN_SZ, 0); 219 if (!phba->lpfc_nvmet_drb_pool) { 220 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 221 "6024 Can't enable NVME Target - no memory\n"); 222 return -ENOMEM; 223 } 224 return 0; 225 } 226 227 /** 228 * lpfc_mem_free - Frees memory allocated by lpfc_mem_alloc 229 * @phba: HBA to free memory for 230 * 231 * Description: Free the memory allocated by lpfc_mem_alloc routine. This 232 * routine is a the counterpart of lpfc_mem_alloc. 233 * 234 * Returns: None 235 **/ 236 void 237 lpfc_mem_free(struct lpfc_hba *phba) 238 { 239 int i; 240 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 241 struct lpfc_device_data *device_data; 242 243 /* Free HBQ pools */ 244 lpfc_sli_hbqbuf_free_all(phba); 245 dma_pool_destroy(phba->lpfc_nvmet_drb_pool); 246 phba->lpfc_nvmet_drb_pool = NULL; 247 248 dma_pool_destroy(phba->lpfc_drb_pool); 249 phba->lpfc_drb_pool = NULL; 250 251 dma_pool_destroy(phba->lpfc_hrb_pool); 252 phba->lpfc_hrb_pool = NULL; 253 254 dma_pool_destroy(phba->lpfc_hbq_pool); 255 phba->lpfc_hbq_pool = NULL; 256 257 mempool_destroy(phba->rrq_pool); 258 phba->rrq_pool = NULL; 259 260 /* Free NLP memory pool */ 261 mempool_destroy(phba->nlp_mem_pool); 262 phba->nlp_mem_pool = NULL; 263 if (phba->sli_rev == LPFC_SLI_REV4 && phba->active_rrq_pool) { 264 mempool_destroy(phba->active_rrq_pool); 265 phba->active_rrq_pool = NULL; 266 } 267 268 /* Free mbox memory pool */ 269 mempool_destroy(phba->mbox_mem_pool); 270 phba->mbox_mem_pool = NULL; 271 272 /* Free MBUF memory pool */ 273 for (i = 0; i < pool->current_count; i++) 274 dma_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, 275 pool->elements[i].phys); 276 kfree(pool->elements); 277 278 dma_pool_destroy(phba->lpfc_mbuf_pool); 279 phba->lpfc_mbuf_pool = NULL; 280 281 /* Free Device Data memory pool */ 282 if (phba->device_data_mem_pool) { 283 /* Ensure all objects have been returned to the pool */ 284 while (!list_empty(&phba->luns)) { 285 device_data = list_first_entry(&phba->luns, 286 struct lpfc_device_data, 287 listentry); 288 list_del(&device_data->listentry); 289 mempool_free(device_data, phba->device_data_mem_pool); 290 } 291 mempool_destroy(phba->device_data_mem_pool); 292 } 293 phba->device_data_mem_pool = NULL; 294 return; 295 } 296 297 /** 298 * lpfc_mem_free_all - Frees all PCI and driver memory 299 * @phba: HBA to free memory for 300 * 301 * Description: Free memory from PCI and driver memory pools and also those 302 * used : lpfc_sg_dma_buf_pool, lpfc_mbuf_pool, lpfc_hrb_pool. Frees 303 * kmalloc-backed mempools for LPFC_MBOXQ_t and lpfc_nodelist. Also frees 304 * the VPI bitmask. 305 * 306 * Returns: None 307 **/ 308 void 309 lpfc_mem_free_all(struct lpfc_hba *phba) 310 { 311 struct lpfc_sli *psli = &phba->sli; 312 LPFC_MBOXQ_t *mbox, *next_mbox; 313 314 /* Free memory used in mailbox queue back to mailbox memory pool */ 315 list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) { 316 list_del(&mbox->list); 317 lpfc_mem_free_sli_mbox(phba, mbox); 318 } 319 /* Free memory used in mailbox cmpl list back to mailbox memory pool */ 320 list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) { 321 list_del(&mbox->list); 322 lpfc_mem_free_sli_mbox(phba, mbox); 323 } 324 /* Free the active mailbox command back to the mailbox memory pool */ 325 spin_lock_irq(&phba->hbalock); 326 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; 327 spin_unlock_irq(&phba->hbalock); 328 if (psli->mbox_active) { 329 mbox = psli->mbox_active; 330 lpfc_mem_free_sli_mbox(phba, mbox); 331 psli->mbox_active = NULL; 332 } 333 334 /* Free and destroy all the allocated memory pools */ 335 lpfc_mem_free(phba); 336 337 /* Free DMA buffer memory pool */ 338 dma_pool_destroy(phba->lpfc_sg_dma_buf_pool); 339 phba->lpfc_sg_dma_buf_pool = NULL; 340 341 dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool); 342 phba->lpfc_cmd_rsp_buf_pool = NULL; 343 344 /* Free Congestion Data buffer */ 345 if (phba->cgn_i) { 346 dma_free_coherent(&phba->pcidev->dev, 347 sizeof(struct lpfc_cgn_info), 348 phba->cgn_i->virt, phba->cgn_i->phys); 349 kfree(phba->cgn_i); 350 phba->cgn_i = NULL; 351 } 352 353 /* Free RX Monitor */ 354 if (phba->rx_monitor) { 355 lpfc_rx_monitor_destroy_ring(phba->rx_monitor); 356 kfree(phba->rx_monitor); 357 phba->rx_monitor = NULL; 358 } 359 360 /* Free the iocb lookup array */ 361 kfree(psli->iocbq_lookup); 362 psli->iocbq_lookup = NULL; 363 364 return; 365 } 366 367 /** 368 * lpfc_mbuf_alloc - Allocate an mbuf from the lpfc_mbuf_pool PCI pool 369 * @phba: HBA which owns the pool to allocate from 370 * @mem_flags: indicates if this is a priority (MEM_PRI) allocation 371 * @handle: used to return the DMA-mapped address of the mbuf 372 * 373 * Description: Allocates a DMA-mapped buffer from the lpfc_mbuf_pool PCI pool. 374 * Allocates from generic dma_pool_alloc function first and if that fails and 375 * mem_flags has MEM_PRI set (the only defined flag), returns an mbuf from the 376 * HBA's pool. 377 * 378 * Notes: Not interrupt-safe. Must be called with no locks held. Takes 379 * phba->hbalock. 380 * 381 * Returns: 382 * pointer to the allocated mbuf on success 383 * NULL on failure 384 **/ 385 void * 386 lpfc_mbuf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) 387 { 388 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 389 unsigned long iflags; 390 void *ret; 391 392 ret = dma_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle); 393 394 spin_lock_irqsave(&phba->hbalock, iflags); 395 if (!ret && (mem_flags & MEM_PRI) && pool->current_count) { 396 pool->current_count--; 397 ret = pool->elements[pool->current_count].virt; 398 *handle = pool->elements[pool->current_count].phys; 399 } 400 spin_unlock_irqrestore(&phba->hbalock, iflags); 401 return ret; 402 } 403 404 /** 405 * __lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (locked) 406 * @phba: HBA which owns the pool to return to 407 * @virt: mbuf to free 408 * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed 409 * 410 * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if 411 * it is below its max_count, frees the mbuf otherwise. 412 * 413 * Notes: Must be called with phba->hbalock held to synchronize access to 414 * lpfc_mbuf_safety_pool. 415 * 416 * Returns: None 417 **/ 418 void 419 __lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) 420 { 421 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 422 423 if (pool->current_count < pool->max_count) { 424 pool->elements[pool->current_count].virt = virt; 425 pool->elements[pool->current_count].phys = dma; 426 pool->current_count++; 427 } else { 428 dma_pool_free(phba->lpfc_mbuf_pool, virt, dma); 429 } 430 return; 431 } 432 433 /** 434 * lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (unlocked) 435 * @phba: HBA which owns the pool to return to 436 * @virt: mbuf to free 437 * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed 438 * 439 * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if 440 * it is below its max_count, frees the mbuf otherwise. 441 * 442 * Notes: Takes phba->hbalock. Can be called with or without other locks held. 443 * 444 * Returns: None 445 **/ 446 void 447 lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) 448 { 449 unsigned long iflags; 450 451 spin_lock_irqsave(&phba->hbalock, iflags); 452 __lpfc_mbuf_free(phba, virt, dma); 453 spin_unlock_irqrestore(&phba->hbalock, iflags); 454 return; 455 } 456 457 /** 458 * lpfc_nvmet_buf_alloc - Allocate an nvmet_buf from the 459 * lpfc_sg_dma_buf_pool PCI pool 460 * @phba: HBA which owns the pool to allocate from 461 * @mem_flags: indicates if this is a priority (MEM_PRI) allocation 462 * @handle: used to return the DMA-mapped address of the nvmet_buf 463 * 464 * Description: Allocates a DMA-mapped buffer from the lpfc_sg_dma_buf_pool 465 * PCI pool. Allocates from generic dma_pool_alloc function. 466 * 467 * Returns: 468 * pointer to the allocated nvmet_buf on success 469 * NULL on failure 470 **/ 471 void * 472 lpfc_nvmet_buf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) 473 { 474 void *ret; 475 476 ret = dma_pool_alloc(phba->lpfc_sg_dma_buf_pool, GFP_KERNEL, handle); 477 return ret; 478 } 479 480 /** 481 * lpfc_nvmet_buf_free - Free an nvmet_buf from the lpfc_sg_dma_buf_pool 482 * PCI pool 483 * @phba: HBA which owns the pool to return to 484 * @virt: nvmet_buf to free 485 * @dma: the DMA-mapped address of the lpfc_sg_dma_buf_pool to be freed 486 * 487 * Returns: None 488 **/ 489 void 490 lpfc_nvmet_buf_free(struct lpfc_hba *phba, void *virt, dma_addr_t dma) 491 { 492 dma_pool_free(phba->lpfc_sg_dma_buf_pool, virt, dma); 493 } 494 495 /** 496 * lpfc_els_hbq_alloc - Allocate an HBQ buffer 497 * @phba: HBA to allocate HBQ buffer for 498 * 499 * Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hrb_pool PCI 500 * pool along a non-DMA-mapped container for it. 501 * 502 * Notes: Not interrupt-safe. Must be called with no locks held. 503 * 504 * Returns: 505 * pointer to HBQ on success 506 * NULL on failure 507 **/ 508 struct hbq_dmabuf * 509 lpfc_els_hbq_alloc(struct lpfc_hba *phba) 510 { 511 struct hbq_dmabuf *hbqbp; 512 513 hbqbp = kzalloc_obj(struct hbq_dmabuf); 514 if (!hbqbp) 515 return NULL; 516 517 hbqbp->dbuf.virt = dma_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL, 518 &hbqbp->dbuf.phys); 519 if (!hbqbp->dbuf.virt) { 520 kfree(hbqbp); 521 return NULL; 522 } 523 hbqbp->total_size = LPFC_BPL_SIZE; 524 return hbqbp; 525 } 526 527 /** 528 * lpfc_els_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc 529 * @phba: HBA buffer was allocated for 530 * @hbqbp: HBQ container returned by lpfc_els_hbq_alloc 531 * 532 * Description: Frees both the container and the DMA-mapped buffer returned by 533 * lpfc_els_hbq_alloc. 534 * 535 * Notes: Can be called with or without locks held. 536 * 537 * Returns: None 538 **/ 539 void 540 lpfc_els_hbq_free(struct lpfc_hba *phba, struct hbq_dmabuf *hbqbp) 541 { 542 dma_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys); 543 kfree(hbqbp); 544 return; 545 } 546 547 /** 548 * lpfc_sli4_rb_alloc - Allocate an SLI4 Receive buffer 549 * @phba: HBA to allocate a receive buffer for 550 * 551 * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI 552 * pool along a non-DMA-mapped container for it. 553 * 554 * Notes: Not interrupt-safe. Must be called with no locks held. 555 * 556 * Returns: 557 * pointer to HBQ on success 558 * NULL on failure 559 **/ 560 struct hbq_dmabuf * 561 lpfc_sli4_rb_alloc(struct lpfc_hba *phba) 562 { 563 struct hbq_dmabuf *dma_buf; 564 565 dma_buf = kzalloc_obj(struct hbq_dmabuf); 566 if (!dma_buf) 567 return NULL; 568 569 dma_buf->hbuf.virt = dma_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL, 570 &dma_buf->hbuf.phys); 571 if (!dma_buf->hbuf.virt) { 572 kfree(dma_buf); 573 return NULL; 574 } 575 dma_buf->dbuf.virt = dma_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL, 576 &dma_buf->dbuf.phys); 577 if (!dma_buf->dbuf.virt) { 578 dma_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, 579 dma_buf->hbuf.phys); 580 kfree(dma_buf); 581 return NULL; 582 } 583 dma_buf->total_size = LPFC_DATA_BUF_SIZE; 584 return dma_buf; 585 } 586 587 /** 588 * lpfc_sli4_rb_free - Frees a receive buffer 589 * @phba: HBA buffer was allocated for 590 * @dmab: DMA Buffer container returned by lpfc_sli4_hbq_alloc 591 * 592 * Description: Frees both the container and the DMA-mapped buffers returned by 593 * lpfc_sli4_rb_alloc. 594 * 595 * Notes: Can be called with or without locks held. 596 * 597 * Returns: None 598 **/ 599 void 600 lpfc_sli4_rb_free(struct lpfc_hba *phba, struct hbq_dmabuf *dmab) 601 { 602 dma_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys); 603 dma_pool_free(phba->lpfc_drb_pool, dmab->dbuf.virt, dmab->dbuf.phys); 604 kfree(dmab); 605 } 606 607 /** 608 * lpfc_sli4_nvmet_alloc - Allocate an SLI4 Receive buffer 609 * @phba: HBA to allocate a receive buffer for 610 * 611 * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI 612 * pool along a non-DMA-mapped container for it. 613 * 614 * Returns: 615 * pointer to HBQ on success 616 * NULL on failure 617 **/ 618 struct rqb_dmabuf * 619 lpfc_sli4_nvmet_alloc(struct lpfc_hba *phba) 620 { 621 struct rqb_dmabuf *dma_buf; 622 623 dma_buf = kzalloc_obj(*dma_buf); 624 if (!dma_buf) 625 return NULL; 626 627 dma_buf->hbuf.virt = dma_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL, 628 &dma_buf->hbuf.phys); 629 if (!dma_buf->hbuf.virt) { 630 kfree(dma_buf); 631 return NULL; 632 } 633 dma_buf->dbuf.virt = dma_pool_alloc(phba->lpfc_nvmet_drb_pool, 634 GFP_KERNEL, &dma_buf->dbuf.phys); 635 if (!dma_buf->dbuf.virt) { 636 dma_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, 637 dma_buf->hbuf.phys); 638 kfree(dma_buf); 639 return NULL; 640 } 641 dma_buf->total_size = LPFC_NVMET_DATA_BUF_SIZE; 642 return dma_buf; 643 } 644 645 /** 646 * lpfc_sli4_nvmet_free - Frees a receive buffer 647 * @phba: HBA buffer was allocated for 648 * @dmab: DMA Buffer container returned by lpfc_sli4_rbq_alloc 649 * 650 * Description: Frees both the container and the DMA-mapped buffers returned by 651 * lpfc_sli4_nvmet_alloc. 652 * 653 * Notes: Can be called with or without locks held. 654 * 655 * Returns: None 656 **/ 657 void 658 lpfc_sli4_nvmet_free(struct lpfc_hba *phba, struct rqb_dmabuf *dmab) 659 { 660 dma_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys); 661 dma_pool_free(phba->lpfc_nvmet_drb_pool, 662 dmab->dbuf.virt, dmab->dbuf.phys); 663 kfree(dmab); 664 } 665 666 /** 667 * lpfc_in_buf_free - Free a DMA buffer 668 * @phba: HBA buffer is associated with 669 * @mp: Buffer to free 670 * 671 * Description: Frees the given DMA buffer in the appropriate way given if the 672 * HBA is running in SLI3 mode with HBQs enabled. 673 * 674 * Notes: Takes phba->hbalock. Can be called with or without other locks held. 675 * 676 * Returns: None 677 **/ 678 void 679 lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp) 680 { 681 struct hbq_dmabuf *hbq_entry; 682 unsigned long flags; 683 684 if (!mp) 685 return; 686 687 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { 688 hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf); 689 /* Check whether HBQ is still in use */ 690 spin_lock_irqsave(&phba->hbalock, flags); 691 if (!phba->hbq_in_use) { 692 spin_unlock_irqrestore(&phba->hbalock, flags); 693 return; 694 } 695 list_del(&hbq_entry->dbuf.list); 696 if (hbq_entry->tag == -1) { 697 (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) 698 (phba, hbq_entry); 699 } else { 700 lpfc_sli_free_hbq(phba, hbq_entry); 701 } 702 spin_unlock_irqrestore(&phba->hbalock, flags); 703 } else { 704 lpfc_mbuf_free(phba, mp->virt, mp->phys); 705 kfree(mp); 706 } 707 return; 708 } 709 710 /** 711 * lpfc_rq_buf_free - Free a RQ DMA buffer 712 * @phba: HBA buffer is associated with 713 * @mp: Buffer to free 714 * 715 * Description: Frees the given DMA buffer in the appropriate way given by 716 * reposting it to its associated RQ so it can be reused. 717 * 718 * Notes: Takes phba->hbalock. Can be called with or without other locks held. 719 * 720 * Returns: None 721 **/ 722 void 723 lpfc_rq_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp) 724 { 725 struct lpfc_rqb *rqbp; 726 struct lpfc_rqe hrqe; 727 struct lpfc_rqe drqe; 728 struct rqb_dmabuf *rqb_entry; 729 unsigned long flags; 730 int rc; 731 732 if (!mp) 733 return; 734 735 rqb_entry = container_of(mp, struct rqb_dmabuf, hbuf); 736 rqbp = rqb_entry->hrq->rqbp; 737 738 spin_lock_irqsave(&phba->hbalock, flags); 739 list_del(&rqb_entry->hbuf.list); 740 hrqe.address_lo = putPaddrLow(rqb_entry->hbuf.phys); 741 hrqe.address_hi = putPaddrHigh(rqb_entry->hbuf.phys); 742 drqe.address_lo = putPaddrLow(rqb_entry->dbuf.phys); 743 drqe.address_hi = putPaddrHigh(rqb_entry->dbuf.phys); 744 rc = lpfc_sli4_rq_put(rqb_entry->hrq, rqb_entry->drq, &hrqe, &drqe); 745 if (rc < 0) { 746 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 747 "6409 Cannot post to HRQ %d: %x %x %x " 748 "DRQ %x %x\n", 749 rqb_entry->hrq->queue_id, 750 rqb_entry->hrq->host_index, 751 rqb_entry->hrq->hba_index, 752 rqb_entry->hrq->entry_count, 753 rqb_entry->drq->host_index, 754 rqb_entry->drq->hba_index); 755 (rqbp->rqb_free_buffer)(phba, rqb_entry); 756 } else { 757 list_add_tail(&rqb_entry->hbuf.list, &rqbp->rqb_buffer_list); 758 rqbp->buffer_count++; 759 } 760 761 spin_unlock_irqrestore(&phba->hbalock, flags); 762 } 763