1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Limited and/or its subsidiaries. *
6 * Copyright (C) 2004-2014 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
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 *******************************************************************/
24 #include <linux/mempool.h>
25 #include <linux/slab.h>
26 #include <linux/pci.h>
27 #include <linux/interrupt.h>
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>
34 #include <linux/nvme-fc-driver.h>
39 #include "lpfc_sli4.h"
41 #include "lpfc_disc.h"
43 #include "lpfc_scsi.h"
44 #include "lpfc_nvme.h"
45 #include "lpfc_nvmet.h"
46 #include "lpfc_crtn.h"
47 #include "lpfc_logmsg.h"
49 #define LPFC_MBUF_POOL_SIZE 64 /* max elements in MBUF safety pool */
50 #define LPFC_MEM_POOL_SIZE 64 /* max elem in non-DMA safety pool */
51 #define LPFC_DEVICE_DATA_POOL_SIZE 64 /* max elements in device data pool */
54 lpfc_mem_alloc_active_rrq_pool_s4(struct lpfc_hba
*phba
) {
56 int max_xri
= phba
->sli4_hba
.max_cfg_param
.max_xri
;
60 bytes
= ((BITS_PER_LONG
- 1 + max_xri
) / BITS_PER_LONG
) *
61 sizeof(unsigned long);
62 phba
->cfg_rrq_xri_bitmap_sz
= bytes
;
63 phba
->active_rrq_pool
= mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE
,
65 if (!phba
->active_rrq_pool
)
72 * lpfc_mem_alloc - create and allocate all PCI and memory pools
73 * @phba: HBA to allocate pools for
75 * Description: Creates and allocates PCI pools lpfc_sg_dma_buf_pool,
76 * lpfc_mbuf_pool, lpfc_hrb_pool. Creates and allocates kmalloc-backed mempools
77 * for LPFC_MBOXQ_t and lpfc_nodelist. Also allocates the VPI bitmask.
79 * Notes: Not interrupt-safe. Must be called with no locks held. If any
80 * allocation fails, frees all successfully allocated memory before returning.
84 * -ENOMEM on failure (if any memory allocations fail)
87 lpfc_mem_alloc(struct lpfc_hba
*phba
, int align
)
89 struct lpfc_dma_pool
*pool
= &phba
->lpfc_mbuf_safety_pool
;
92 if (phba
->sli_rev
== LPFC_SLI_REV4
) {
93 /* Calculate alignment */
94 if (phba
->cfg_sg_dma_buf_size
< SLI4_PAGE_SIZE
)
95 i
= phba
->cfg_sg_dma_buf_size
;
99 phba
->lpfc_sg_dma_buf_pool
=
100 dma_pool_create("lpfc_sg_dma_buf_pool",
102 phba
->cfg_sg_dma_buf_size
,
104 if (!phba
->lpfc_sg_dma_buf_pool
)
108 phba
->lpfc_sg_dma_buf_pool
=
109 dma_pool_create("lpfc_sg_dma_buf_pool",
110 &phba
->pcidev
->dev
, phba
->cfg_sg_dma_buf_size
,
113 if (!phba
->lpfc_sg_dma_buf_pool
)
117 phba
->lpfc_mbuf_pool
= dma_pool_create("lpfc_mbuf_pool", &phba
->pcidev
->dev
,
120 if (!phba
->lpfc_mbuf_pool
)
121 goto fail_free_dma_buf_pool
;
123 pool
->elements
= kmalloc(sizeof(struct lpfc_dmabuf
) *
124 LPFC_MBUF_POOL_SIZE
, GFP_KERNEL
);
126 goto fail_free_lpfc_mbuf_pool
;
129 pool
->current_count
= 0;
130 for ( i
= 0; i
< LPFC_MBUF_POOL_SIZE
; i
++) {
131 pool
->elements
[i
].virt
= dma_pool_alloc(phba
->lpfc_mbuf_pool
,
132 GFP_KERNEL
, &pool
->elements
[i
].phys
);
133 if (!pool
->elements
[i
].virt
)
134 goto fail_free_mbuf_pool
;
136 pool
->current_count
++;
139 phba
->mbox_mem_pool
= mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE
,
140 sizeof(LPFC_MBOXQ_t
));
141 if (!phba
->mbox_mem_pool
)
142 goto fail_free_mbuf_pool
;
144 phba
->nlp_mem_pool
= mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE
,
145 sizeof(struct lpfc_nodelist
));
146 if (!phba
->nlp_mem_pool
)
147 goto fail_free_mbox_pool
;
149 if (phba
->sli_rev
== LPFC_SLI_REV4
) {
151 mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE
,
152 sizeof(struct lpfc_node_rrq
));
154 goto fail_free_nlp_mem_pool
;
155 phba
->lpfc_hrb_pool
= dma_pool_create("lpfc_hrb_pool",
157 LPFC_HDR_BUF_SIZE
, align
, 0);
158 if (!phba
->lpfc_hrb_pool
)
159 goto fail_free_rrq_mem_pool
;
161 phba
->lpfc_drb_pool
= dma_pool_create("lpfc_drb_pool",
163 LPFC_DATA_BUF_SIZE
, align
, 0);
164 if (!phba
->lpfc_drb_pool
)
165 goto fail_free_hrb_pool
;
166 phba
->lpfc_hbq_pool
= NULL
;
168 phba
->lpfc_hbq_pool
= dma_pool_create("lpfc_hbq_pool",
169 &phba
->pcidev
->dev
, LPFC_BPL_SIZE
, align
, 0);
170 if (!phba
->lpfc_hbq_pool
)
171 goto fail_free_nlp_mem_pool
;
172 phba
->lpfc_hrb_pool
= NULL
;
173 phba
->lpfc_drb_pool
= NULL
;
176 if (phba
->cfg_EnableXLane
) {
177 phba
->device_data_mem_pool
= mempool_create_kmalloc_pool(
178 LPFC_DEVICE_DATA_POOL_SIZE
,
179 sizeof(struct lpfc_device_data
));
180 if (!phba
->device_data_mem_pool
)
181 goto fail_free_drb_pool
;
183 phba
->device_data_mem_pool
= NULL
;
188 dma_pool_destroy(phba
->lpfc_drb_pool
);
189 phba
->lpfc_drb_pool
= NULL
;
191 dma_pool_destroy(phba
->lpfc_hrb_pool
);
192 phba
->lpfc_hrb_pool
= NULL
;
193 fail_free_rrq_mem_pool
:
194 mempool_destroy(phba
->rrq_pool
);
195 phba
->rrq_pool
= NULL
;
196 fail_free_nlp_mem_pool
:
197 mempool_destroy(phba
->nlp_mem_pool
);
198 phba
->nlp_mem_pool
= NULL
;
200 mempool_destroy(phba
->mbox_mem_pool
);
201 phba
->mbox_mem_pool
= NULL
;
204 dma_pool_free(phba
->lpfc_mbuf_pool
, pool
->elements
[i
].virt
,
205 pool
->elements
[i
].phys
);
206 kfree(pool
->elements
);
207 fail_free_lpfc_mbuf_pool
:
208 dma_pool_destroy(phba
->lpfc_mbuf_pool
);
209 phba
->lpfc_mbuf_pool
= NULL
;
210 fail_free_dma_buf_pool
:
211 dma_pool_destroy(phba
->lpfc_sg_dma_buf_pool
);
212 phba
->lpfc_sg_dma_buf_pool
= NULL
;
218 lpfc_nvmet_mem_alloc(struct lpfc_hba
*phba
)
220 phba
->lpfc_nvmet_drb_pool
=
221 dma_pool_create("lpfc_nvmet_drb_pool",
222 &phba
->pcidev
->dev
, LPFC_NVMET_DATA_BUF_SIZE
,
224 if (!phba
->lpfc_nvmet_drb_pool
) {
225 lpfc_printf_log(phba
, KERN_ERR
, LOG_INIT
,
226 "6024 Can't enable NVME Target - no memory\n");
233 * lpfc_mem_free - Frees memory allocated by lpfc_mem_alloc
234 * @phba: HBA to free memory for
236 * Description: Free the memory allocated by lpfc_mem_alloc routine. This
237 * routine is a the counterpart of lpfc_mem_alloc.
242 lpfc_mem_free(struct lpfc_hba
*phba
)
245 struct lpfc_dma_pool
*pool
= &phba
->lpfc_mbuf_safety_pool
;
246 struct lpfc_device_data
*device_data
;
249 lpfc_sli_hbqbuf_free_all(phba
);
250 if (phba
->lpfc_nvmet_drb_pool
)
251 dma_pool_destroy(phba
->lpfc_nvmet_drb_pool
);
252 phba
->lpfc_nvmet_drb_pool
= NULL
;
253 if (phba
->lpfc_drb_pool
)
254 dma_pool_destroy(phba
->lpfc_drb_pool
);
255 phba
->lpfc_drb_pool
= NULL
;
256 if (phba
->lpfc_hrb_pool
)
257 dma_pool_destroy(phba
->lpfc_hrb_pool
);
258 phba
->lpfc_hrb_pool
= NULL
;
259 if (phba
->txrdy_payload_pool
)
260 dma_pool_destroy(phba
->txrdy_payload_pool
);
261 phba
->txrdy_payload_pool
= NULL
;
263 if (phba
->lpfc_hbq_pool
)
264 dma_pool_destroy(phba
->lpfc_hbq_pool
);
265 phba
->lpfc_hbq_pool
= NULL
;
268 mempool_destroy(phba
->rrq_pool
);
269 phba
->rrq_pool
= NULL
;
271 /* Free NLP memory pool */
272 mempool_destroy(phba
->nlp_mem_pool
);
273 phba
->nlp_mem_pool
= NULL
;
274 if (phba
->sli_rev
== LPFC_SLI_REV4
&& phba
->active_rrq_pool
) {
275 mempool_destroy(phba
->active_rrq_pool
);
276 phba
->active_rrq_pool
= NULL
;
279 /* Free mbox memory pool */
280 mempool_destroy(phba
->mbox_mem_pool
);
281 phba
->mbox_mem_pool
= NULL
;
283 /* Free MBUF memory pool */
284 for (i
= 0; i
< pool
->current_count
; i
++)
285 dma_pool_free(phba
->lpfc_mbuf_pool
, pool
->elements
[i
].virt
,
286 pool
->elements
[i
].phys
);
287 kfree(pool
->elements
);
289 dma_pool_destroy(phba
->lpfc_mbuf_pool
);
290 phba
->lpfc_mbuf_pool
= NULL
;
292 /* Free DMA buffer memory pool */
293 dma_pool_destroy(phba
->lpfc_sg_dma_buf_pool
);
294 phba
->lpfc_sg_dma_buf_pool
= NULL
;
296 /* Free Device Data memory pool */
297 if (phba
->device_data_mem_pool
) {
298 /* Ensure all objects have been returned to the pool */
299 while (!list_empty(&phba
->luns
)) {
300 device_data
= list_first_entry(&phba
->luns
,
301 struct lpfc_device_data
,
303 list_del(&device_data
->listentry
);
304 mempool_free(device_data
, phba
->device_data_mem_pool
);
306 mempool_destroy(phba
->device_data_mem_pool
);
308 phba
->device_data_mem_pool
= NULL
;
313 * lpfc_mem_free_all - Frees all PCI and driver memory
314 * @phba: HBA to free memory for
316 * Description: Free memory from PCI and driver memory pools and also those
317 * used : lpfc_sg_dma_buf_pool, lpfc_mbuf_pool, lpfc_hrb_pool. Frees
318 * kmalloc-backed mempools for LPFC_MBOXQ_t and lpfc_nodelist. Also frees
324 lpfc_mem_free_all(struct lpfc_hba
*phba
)
326 struct lpfc_sli
*psli
= &phba
->sli
;
327 LPFC_MBOXQ_t
*mbox
, *next_mbox
;
328 struct lpfc_dmabuf
*mp
;
330 /* Free memory used in mailbox queue back to mailbox memory pool */
331 list_for_each_entry_safe(mbox
, next_mbox
, &psli
->mboxq
, list
) {
332 mp
= (struct lpfc_dmabuf
*) (mbox
->context1
);
334 lpfc_mbuf_free(phba
, mp
->virt
, mp
->phys
);
337 list_del(&mbox
->list
);
338 mempool_free(mbox
, phba
->mbox_mem_pool
);
340 /* Free memory used in mailbox cmpl list back to mailbox memory pool */
341 list_for_each_entry_safe(mbox
, next_mbox
, &psli
->mboxq_cmpl
, list
) {
342 mp
= (struct lpfc_dmabuf
*) (mbox
->context1
);
344 lpfc_mbuf_free(phba
, mp
->virt
, mp
->phys
);
347 list_del(&mbox
->list
);
348 mempool_free(mbox
, phba
->mbox_mem_pool
);
350 /* Free the active mailbox command back to the mailbox memory pool */
351 spin_lock_irq(&phba
->hbalock
);
352 psli
->sli_flag
&= ~LPFC_SLI_MBOX_ACTIVE
;
353 spin_unlock_irq(&phba
->hbalock
);
354 if (psli
->mbox_active
) {
355 mbox
= psli
->mbox_active
;
356 mp
= (struct lpfc_dmabuf
*) (mbox
->context1
);
358 lpfc_mbuf_free(phba
, mp
->virt
, mp
->phys
);
361 mempool_free(mbox
, phba
->mbox_mem_pool
);
362 psli
->mbox_active
= NULL
;
365 /* Free and destroy all the allocated memory pools */
368 /* Free the iocb lookup array */
369 kfree(psli
->iocbq_lookup
);
370 psli
->iocbq_lookup
= NULL
;
376 * lpfc_mbuf_alloc - Allocate an mbuf from the lpfc_mbuf_pool PCI pool
377 * @phba: HBA which owns the pool to allocate from
378 * @mem_flags: indicates if this is a priority (MEM_PRI) allocation
379 * @handle: used to return the DMA-mapped address of the mbuf
381 * Description: Allocates a DMA-mapped buffer from the lpfc_mbuf_pool PCI pool.
382 * Allocates from generic dma_pool_alloc function first and if that fails and
383 * mem_flags has MEM_PRI set (the only defined flag), returns an mbuf from the
386 * Notes: Not interrupt-safe. Must be called with no locks held. Takes
390 * pointer to the allocated mbuf on success
394 lpfc_mbuf_alloc(struct lpfc_hba
*phba
, int mem_flags
, dma_addr_t
*handle
)
396 struct lpfc_dma_pool
*pool
= &phba
->lpfc_mbuf_safety_pool
;
397 unsigned long iflags
;
400 ret
= dma_pool_alloc(phba
->lpfc_mbuf_pool
, GFP_KERNEL
, handle
);
402 spin_lock_irqsave(&phba
->hbalock
, iflags
);
403 if (!ret
&& (mem_flags
& MEM_PRI
) && pool
->current_count
) {
404 pool
->current_count
--;
405 ret
= pool
->elements
[pool
->current_count
].virt
;
406 *handle
= pool
->elements
[pool
->current_count
].phys
;
408 spin_unlock_irqrestore(&phba
->hbalock
, iflags
);
413 * __lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (locked)
414 * @phba: HBA which owns the pool to return to
415 * @virt: mbuf to free
416 * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed
418 * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if
419 * it is below its max_count, frees the mbuf otherwise.
421 * Notes: Must be called with phba->hbalock held to synchronize access to
422 * lpfc_mbuf_safety_pool.
427 __lpfc_mbuf_free(struct lpfc_hba
* phba
, void *virt
, dma_addr_t dma
)
429 struct lpfc_dma_pool
*pool
= &phba
->lpfc_mbuf_safety_pool
;
431 if (pool
->current_count
< pool
->max_count
) {
432 pool
->elements
[pool
->current_count
].virt
= virt
;
433 pool
->elements
[pool
->current_count
].phys
= dma
;
434 pool
->current_count
++;
436 dma_pool_free(phba
->lpfc_mbuf_pool
, virt
, dma
);
442 * lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (unlocked)
443 * @phba: HBA which owns the pool to return to
444 * @virt: mbuf to free
445 * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed
447 * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if
448 * it is below its max_count, frees the mbuf otherwise.
450 * Notes: Takes phba->hbalock. Can be called with or without other locks held.
455 lpfc_mbuf_free(struct lpfc_hba
* phba
, void *virt
, dma_addr_t dma
)
457 unsigned long iflags
;
459 spin_lock_irqsave(&phba
->hbalock
, iflags
);
460 __lpfc_mbuf_free(phba
, virt
, dma
);
461 spin_unlock_irqrestore(&phba
->hbalock
, iflags
);
466 * lpfc_nvmet_buf_alloc - Allocate an nvmet_buf from the
467 * lpfc_sg_dma_buf_pool PCI pool
468 * @phba: HBA which owns the pool to allocate from
469 * @mem_flags: indicates if this is a priority (MEM_PRI) allocation
470 * @handle: used to return the DMA-mapped address of the nvmet_buf
472 * Description: Allocates a DMA-mapped buffer from the lpfc_sg_dma_buf_pool
473 * PCI pool. Allocates from generic dma_pool_alloc function.
476 * pointer to the allocated nvmet_buf on success
480 lpfc_nvmet_buf_alloc(struct lpfc_hba
*phba
, int mem_flags
, dma_addr_t
*handle
)
484 ret
= dma_pool_alloc(phba
->lpfc_sg_dma_buf_pool
, GFP_KERNEL
, handle
);
489 * lpfc_nvmet_buf_free - Free an nvmet_buf from the lpfc_sg_dma_buf_pool
491 * @phba: HBA which owns the pool to return to
492 * @virt: nvmet_buf to free
493 * @dma: the DMA-mapped address of the lpfc_sg_dma_buf_pool to be freed
498 lpfc_nvmet_buf_free(struct lpfc_hba
*phba
, void *virt
, dma_addr_t dma
)
500 dma_pool_free(phba
->lpfc_sg_dma_buf_pool
, virt
, dma
);
504 * lpfc_els_hbq_alloc - Allocate an HBQ buffer
505 * @phba: HBA to allocate HBQ buffer for
507 * Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hrb_pool PCI
508 * pool along a non-DMA-mapped container for it.
510 * Notes: Not interrupt-safe. Must be called with no locks held.
513 * pointer to HBQ on success
517 lpfc_els_hbq_alloc(struct lpfc_hba
*phba
)
519 struct hbq_dmabuf
*hbqbp
;
521 hbqbp
= kzalloc(sizeof(struct hbq_dmabuf
), GFP_KERNEL
);
525 hbqbp
->dbuf
.virt
= dma_pool_alloc(phba
->lpfc_hbq_pool
, GFP_KERNEL
,
527 if (!hbqbp
->dbuf
.virt
) {
531 hbqbp
->total_size
= LPFC_BPL_SIZE
;
536 * lpfc_els_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc
537 * @phba: HBA buffer was allocated for
538 * @hbqbp: HBQ container returned by lpfc_els_hbq_alloc
540 * Description: Frees both the container and the DMA-mapped buffer returned by
541 * lpfc_els_hbq_alloc.
543 * Notes: Can be called with or without locks held.
548 lpfc_els_hbq_free(struct lpfc_hba
*phba
, struct hbq_dmabuf
*hbqbp
)
550 dma_pool_free(phba
->lpfc_hbq_pool
, hbqbp
->dbuf
.virt
, hbqbp
->dbuf
.phys
);
556 * lpfc_sli4_rb_alloc - Allocate an SLI4 Receive buffer
557 * @phba: HBA to allocate a receive buffer for
559 * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI
560 * pool along a non-DMA-mapped container for it.
562 * Notes: Not interrupt-safe. Must be called with no locks held.
565 * pointer to HBQ on success
569 lpfc_sli4_rb_alloc(struct lpfc_hba
*phba
)
571 struct hbq_dmabuf
*dma_buf
;
573 dma_buf
= kzalloc(sizeof(struct hbq_dmabuf
), GFP_KERNEL
);
577 dma_buf
->hbuf
.virt
= dma_pool_alloc(phba
->lpfc_hrb_pool
, GFP_KERNEL
,
578 &dma_buf
->hbuf
.phys
);
579 if (!dma_buf
->hbuf
.virt
) {
583 dma_buf
->dbuf
.virt
= dma_pool_alloc(phba
->lpfc_drb_pool
, GFP_KERNEL
,
584 &dma_buf
->dbuf
.phys
);
585 if (!dma_buf
->dbuf
.virt
) {
586 dma_pool_free(phba
->lpfc_hrb_pool
, dma_buf
->hbuf
.virt
,
591 dma_buf
->total_size
= LPFC_DATA_BUF_SIZE
;
596 * lpfc_sli4_rb_free - Frees a receive buffer
597 * @phba: HBA buffer was allocated for
598 * @dmab: DMA Buffer container returned by lpfc_sli4_hbq_alloc
600 * Description: Frees both the container and the DMA-mapped buffers returned by
601 * lpfc_sli4_rb_alloc.
603 * Notes: Can be called with or without locks held.
608 lpfc_sli4_rb_free(struct lpfc_hba
*phba
, struct hbq_dmabuf
*dmab
)
610 dma_pool_free(phba
->lpfc_hrb_pool
, dmab
->hbuf
.virt
, dmab
->hbuf
.phys
);
611 dma_pool_free(phba
->lpfc_drb_pool
, dmab
->dbuf
.virt
, dmab
->dbuf
.phys
);
616 * lpfc_sli4_nvmet_alloc - Allocate an SLI4 Receive buffer
617 * @phba: HBA to allocate a receive buffer for
619 * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI
620 * pool along a non-DMA-mapped container for it.
622 * Notes: Not interrupt-safe. Must be called with no locks held.
625 * pointer to HBQ on success
629 lpfc_sli4_nvmet_alloc(struct lpfc_hba
*phba
)
631 struct rqb_dmabuf
*dma_buf
;
633 dma_buf
= kzalloc(sizeof(struct rqb_dmabuf
), GFP_KERNEL
);
637 dma_buf
->hbuf
.virt
= dma_pool_alloc(phba
->lpfc_hrb_pool
, GFP_KERNEL
,
638 &dma_buf
->hbuf
.phys
);
639 if (!dma_buf
->hbuf
.virt
) {
643 dma_buf
->dbuf
.virt
= dma_pool_alloc(phba
->lpfc_nvmet_drb_pool
,
644 GFP_KERNEL
, &dma_buf
->dbuf
.phys
);
645 if (!dma_buf
->dbuf
.virt
) {
646 dma_pool_free(phba
->lpfc_hrb_pool
, dma_buf
->hbuf
.virt
,
651 dma_buf
->total_size
= LPFC_NVMET_DATA_BUF_SIZE
;
656 * lpfc_sli4_nvmet_free - Frees a receive buffer
657 * @phba: HBA buffer was allocated for
658 * @dmab: DMA Buffer container returned by lpfc_sli4_rbq_alloc
660 * Description: Frees both the container and the DMA-mapped buffers returned by
661 * lpfc_sli4_nvmet_alloc.
663 * Notes: Can be called with or without locks held.
668 lpfc_sli4_nvmet_free(struct lpfc_hba
*phba
, struct rqb_dmabuf
*dmab
)
670 dma_pool_free(phba
->lpfc_hrb_pool
, dmab
->hbuf
.virt
, dmab
->hbuf
.phys
);
671 dma_pool_free(phba
->lpfc_nvmet_drb_pool
,
672 dmab
->dbuf
.virt
, dmab
->dbuf
.phys
);
677 * lpfc_in_buf_free - Free a DMA buffer
678 * @phba: HBA buffer is associated with
679 * @mp: Buffer to free
681 * Description: Frees the given DMA buffer in the appropriate way given if the
682 * HBA is running in SLI3 mode with HBQs enabled.
684 * Notes: Takes phba->hbalock. Can be called with or without other locks held.
689 lpfc_in_buf_free(struct lpfc_hba
*phba
, struct lpfc_dmabuf
*mp
)
691 struct hbq_dmabuf
*hbq_entry
;
697 if (phba
->sli3_options
& LPFC_SLI3_HBQ_ENABLED
) {
698 hbq_entry
= container_of(mp
, struct hbq_dmabuf
, dbuf
);
699 /* Check whether HBQ is still in use */
700 spin_lock_irqsave(&phba
->hbalock
, flags
);
701 if (!phba
->hbq_in_use
) {
702 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
705 list_del(&hbq_entry
->dbuf
.list
);
706 if (hbq_entry
->tag
== -1) {
707 (phba
->hbqs
[LPFC_ELS_HBQ
].hbq_free_buffer
)
710 lpfc_sli_free_hbq(phba
, hbq_entry
);
712 spin_unlock_irqrestore(&phba
->hbalock
, flags
);
714 lpfc_mbuf_free(phba
, mp
->virt
, mp
->phys
);
721 * lpfc_rq_buf_free - Free a RQ DMA buffer
722 * @phba: HBA buffer is associated with
723 * @mp: Buffer to free
725 * Description: Frees the given DMA buffer in the appropriate way given by
726 * reposting it to its associated RQ so it can be reused.
728 * Notes: Takes phba->hbalock. Can be called with or without other locks held.
733 lpfc_rq_buf_free(struct lpfc_hba
*phba
, struct lpfc_dmabuf
*mp
)
735 struct lpfc_rqb
*rqbp
;
736 struct lpfc_rqe hrqe
;
737 struct lpfc_rqe drqe
;
738 struct rqb_dmabuf
*rqb_entry
;
745 rqb_entry
= container_of(mp
, struct rqb_dmabuf
, hbuf
);
746 rqbp
= rqb_entry
->hrq
->rqbp
;
748 spin_lock_irqsave(&phba
->hbalock
, flags
);
749 list_del(&rqb_entry
->hbuf
.list
);
750 hrqe
.address_lo
= putPaddrLow(rqb_entry
->hbuf
.phys
);
751 hrqe
.address_hi
= putPaddrHigh(rqb_entry
->hbuf
.phys
);
752 drqe
.address_lo
= putPaddrLow(rqb_entry
->dbuf
.phys
);
753 drqe
.address_hi
= putPaddrHigh(rqb_entry
->dbuf
.phys
);
754 rc
= lpfc_sli4_rq_put(rqb_entry
->hrq
, rqb_entry
->drq
, &hrqe
, &drqe
);
756 lpfc_printf_log(phba
, KERN_ERR
, LOG_INIT
,
757 "6409 Cannot post to RQ %d: %x %x\n",
758 rqb_entry
->hrq
->queue_id
,
759 rqb_entry
->hrq
->host_index
,
760 rqb_entry
->hrq
->hba_index
);
761 (rqbp
->rqb_free_buffer
)(phba
, rqb_entry
);
763 list_add_tail(&rqb_entry
->hbuf
.list
, &rqbp
->rqb_buffer_list
);
764 rqbp
->buffer_count
++;
767 spin_unlock_irqrestore(&phba
->hbalock
, flags
);