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dea3101e | 1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
d8e93df1 | 4 | * Copyright (C) 2004-2009 Emulex. All rights reserved. * |
c44ce173 | 5 | * EMULEX and SLI are trademarks of Emulex. * |
dea3101e | 6 | * www.emulex.com * |
c44ce173 | 7 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
dea3101e | 8 | * * |
9 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
10 | * modify it under the terms of version 2 of the GNU General * |
11 | * Public License as published by the Free Software Foundation. * | |
12 | * This program is distributed in the hope that it will be useful. * | |
13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
18 | * more details, a copy of which can be found in the file COPYING * | |
19 | * included with this package. * | |
dea3101e | 20 | *******************************************************************/ |
21 | ||
dea3101e | 22 | #include <linux/mempool.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
dea3101e | 24 | #include <linux/pci.h> |
25 | #include <linux/interrupt.h> | |
26 | ||
f888ba3c JSEC |
27 | #include <scsi/scsi_device.h> |
28 | #include <scsi/scsi_transport_fc.h> | |
29 | ||
91886523 JSEC |
30 | #include <scsi/scsi.h> |
31 | ||
da0436e9 | 32 | #include "lpfc_hw4.h" |
dea3101e | 33 | #include "lpfc_hw.h" |
34 | #include "lpfc_sli.h" | |
da0436e9 | 35 | #include "lpfc_sli4.h" |
ea2151b4 | 36 | #include "lpfc_nl.h" |
dea3101e | 37 | #include "lpfc_disc.h" |
38 | #include "lpfc_scsi.h" | |
39 | #include "lpfc.h" | |
40 | #include "lpfc_crtn.h" | |
41 | ||
42 | #define LPFC_MBUF_POOL_SIZE 64 /* max elements in MBUF safety pool */ | |
43 | #define LPFC_MEM_POOL_SIZE 64 /* max elem in non-DMA safety pool */ | |
44 | ||
2e0fef85 | 45 | |
e59058c4 | 46 | /** |
3621a710 | 47 | * lpfc_mem_alloc - create and allocate all PCI and memory pools |
e59058c4 JS |
48 | * @phba: HBA to allocate pools for |
49 | * | |
50 | * Description: Creates and allocates PCI pools lpfc_scsi_dma_buf_pool, | |
da0436e9 | 51 | * lpfc_mbuf_pool, lpfc_hrb_pool. Creates and allocates kmalloc-backed mempools |
e59058c4 JS |
52 | * for LPFC_MBOXQ_t and lpfc_nodelist. Also allocates the VPI bitmask. |
53 | * | |
54 | * Notes: Not interrupt-safe. Must be called with no locks held. If any | |
55 | * allocation fails, frees all successfully allocated memory before returning. | |
56 | * | |
57 | * Returns: | |
58 | * 0 on success | |
59 | * -ENOMEM on failure (if any memory allocations fail) | |
60 | **/ | |
dea3101e | 61 | int |
da0436e9 | 62 | lpfc_mem_alloc(struct lpfc_hba *phba, int align) |
dea3101e | 63 | { |
64 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
65 | int i; | |
66 | ||
da0436e9 JS |
67 | if (phba->sli_rev == LPFC_SLI_REV4) |
68 | phba->lpfc_scsi_dma_buf_pool = | |
69 | pci_pool_create("lpfc_scsi_dma_buf_pool", | |
70 | phba->pcidev, | |
71 | phba->cfg_sg_dma_buf_size, | |
72 | phba->cfg_sg_dma_buf_size, | |
73 | 0); | |
74 | else | |
75 | phba->lpfc_scsi_dma_buf_pool = | |
76 | pci_pool_create("lpfc_scsi_dma_buf_pool", | |
77 | phba->pcidev, phba->cfg_sg_dma_buf_size, | |
78 | align, 0); | |
dea3101e | 79 | if (!phba->lpfc_scsi_dma_buf_pool) |
80 | goto fail; | |
81 | ||
82 | phba->lpfc_mbuf_pool = pci_pool_create("lpfc_mbuf_pool", phba->pcidev, | |
da0436e9 JS |
83 | LPFC_BPL_SIZE, |
84 | align, 0); | |
dea3101e | 85 | if (!phba->lpfc_mbuf_pool) |
86 | goto fail_free_dma_buf_pool; | |
87 | ||
88 | pool->elements = kmalloc(sizeof(struct lpfc_dmabuf) * | |
89 | LPFC_MBUF_POOL_SIZE, GFP_KERNEL); | |
a96e0c77 MK |
90 | if (!pool->elements) |
91 | goto fail_free_lpfc_mbuf_pool; | |
92 | ||
dea3101e | 93 | pool->max_count = 0; |
94 | pool->current_count = 0; | |
95 | for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) { | |
96 | pool->elements[i].virt = pci_pool_alloc(phba->lpfc_mbuf_pool, | |
97 | GFP_KERNEL, &pool->elements[i].phys); | |
98 | if (!pool->elements[i].virt) | |
99 | goto fail_free_mbuf_pool; | |
100 | pool->max_count++; | |
101 | pool->current_count++; | |
102 | } | |
103 | ||
0eaae62a MD |
104 | phba->mbox_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, |
105 | sizeof(LPFC_MBOXQ_t)); | |
dea3101e | 106 | if (!phba->mbox_mem_pool) |
107 | goto fail_free_mbuf_pool; | |
108 | ||
0eaae62a MD |
109 | phba->nlp_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, |
110 | sizeof(struct lpfc_nodelist)); | |
dea3101e | 111 | if (!phba->nlp_mem_pool) |
112 | goto fail_free_mbox_pool; | |
8568a4d2 JS |
113 | |
114 | if (phba->sli_rev == LPFC_SLI_REV4) { | |
19ca7609 JS |
115 | phba->rrq_pool = |
116 | mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, | |
117 | sizeof(struct lpfc_node_rrq)); | |
118 | if (!phba->rrq_pool) | |
119 | goto fail_free_nlp_mem_pool; | |
8568a4d2 | 120 | phba->lpfc_hrb_pool = pci_pool_create("lpfc_hrb_pool", |
da0436e9 JS |
121 | phba->pcidev, |
122 | LPFC_HDR_BUF_SIZE, align, 0); | |
8568a4d2 | 123 | if (!phba->lpfc_hrb_pool) |
19ca7609 | 124 | goto fail_free_rrq_mem_pool; |
8568a4d2 JS |
125 | |
126 | phba->lpfc_drb_pool = pci_pool_create("lpfc_drb_pool", | |
da0436e9 JS |
127 | phba->pcidev, |
128 | LPFC_DATA_BUF_SIZE, align, 0); | |
8568a4d2 JS |
129 | if (!phba->lpfc_drb_pool) |
130 | goto fail_free_hrb_pool; | |
131 | phba->lpfc_hbq_pool = NULL; | |
132 | } else { | |
133 | phba->lpfc_hbq_pool = pci_pool_create("lpfc_hbq_pool", | |
134 | phba->pcidev, LPFC_BPL_SIZE, align, 0); | |
135 | if (!phba->lpfc_hbq_pool) | |
136 | goto fail_free_nlp_mem_pool; | |
137 | phba->lpfc_hrb_pool = NULL; | |
138 | phba->lpfc_drb_pool = NULL; | |
139 | } | |
92d7f7b0 | 140 | |
dea3101e | 141 | return 0; |
8568a4d2 | 142 | fail_free_hrb_pool: |
da0436e9 JS |
143 | pci_pool_destroy(phba->lpfc_hrb_pool); |
144 | phba->lpfc_hrb_pool = NULL; | |
19ca7609 JS |
145 | fail_free_rrq_mem_pool: |
146 | mempool_destroy(phba->rrq_pool); | |
147 | phba->rrq_pool = NULL; | |
ed957684 JS |
148 | fail_free_nlp_mem_pool: |
149 | mempool_destroy(phba->nlp_mem_pool); | |
150 | phba->nlp_mem_pool = NULL; | |
dea3101e | 151 | fail_free_mbox_pool: |
152 | mempool_destroy(phba->mbox_mem_pool); | |
2e0fef85 | 153 | phba->mbox_mem_pool = NULL; |
dea3101e | 154 | fail_free_mbuf_pool: |
a96e0c77 | 155 | while (i--) |
dea3101e | 156 | pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, |
157 | pool->elements[i].phys); | |
158 | kfree(pool->elements); | |
a96e0c77 | 159 | fail_free_lpfc_mbuf_pool: |
dea3101e | 160 | pci_pool_destroy(phba->lpfc_mbuf_pool); |
2e0fef85 | 161 | phba->lpfc_mbuf_pool = NULL; |
dea3101e | 162 | fail_free_dma_buf_pool: |
163 | pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool); | |
2e0fef85 | 164 | phba->lpfc_scsi_dma_buf_pool = NULL; |
dea3101e | 165 | fail: |
166 | return -ENOMEM; | |
167 | } | |
168 | ||
e59058c4 | 169 | /** |
da0436e9 | 170 | * lpfc_mem_free - Frees memory allocated by lpfc_mem_alloc |
e59058c4 JS |
171 | * @phba: HBA to free memory for |
172 | * | |
da0436e9 JS |
173 | * Description: Free the memory allocated by lpfc_mem_alloc routine. This |
174 | * routine is a the counterpart of lpfc_mem_alloc. | |
e59058c4 JS |
175 | * |
176 | * Returns: None | |
177 | **/ | |
dea3101e | 178 | void |
da0436e9 | 179 | lpfc_mem_free(struct lpfc_hba *phba) |
dea3101e | 180 | { |
dea3101e | 181 | int i; |
da0436e9 | 182 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; |
dea3101e | 183 | |
da0436e9 | 184 | /* Free HBQ pools */ |
ed957684 | 185 | lpfc_sli_hbqbuf_free_all(phba); |
8568a4d2 JS |
186 | if (phba->lpfc_drb_pool) |
187 | pci_pool_destroy(phba->lpfc_drb_pool); | |
da0436e9 | 188 | phba->lpfc_drb_pool = NULL; |
8568a4d2 JS |
189 | if (phba->lpfc_hrb_pool) |
190 | pci_pool_destroy(phba->lpfc_hrb_pool); | |
da0436e9 JS |
191 | phba->lpfc_hrb_pool = NULL; |
192 | ||
8568a4d2 JS |
193 | if (phba->lpfc_hbq_pool) |
194 | pci_pool_destroy(phba->lpfc_hbq_pool); | |
195 | phba->lpfc_hbq_pool = NULL; | |
196 | ||
da0436e9 JS |
197 | /* Free NLP memory pool */ |
198 | mempool_destroy(phba->nlp_mem_pool); | |
199 | phba->nlp_mem_pool = NULL; | |
200 | ||
201 | /* Free mbox memory pool */ | |
202 | mempool_destroy(phba->mbox_mem_pool); | |
203 | phba->mbox_mem_pool = NULL; | |
204 | ||
205 | /* Free MBUF memory pool */ | |
206 | for (i = 0; i < pool->current_count; i++) | |
207 | pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, | |
208 | pool->elements[i].phys); | |
209 | kfree(pool->elements); | |
210 | ||
211 | pci_pool_destroy(phba->lpfc_mbuf_pool); | |
212 | phba->lpfc_mbuf_pool = NULL; | |
ed957684 | 213 | |
da0436e9 JS |
214 | /* Free DMA buffer memory pool */ |
215 | pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool); | |
216 | phba->lpfc_scsi_dma_buf_pool = NULL; | |
217 | ||
218 | return; | |
219 | } | |
220 | ||
221 | /** | |
222 | * lpfc_mem_free_all - Frees all PCI and driver memory | |
223 | * @phba: HBA to free memory for | |
224 | * | |
225 | * Description: Free memory from PCI and driver memory pools and also those | |
226 | * used : lpfc_scsi_dma_buf_pool, lpfc_mbuf_pool, lpfc_hrb_pool. Frees | |
227 | * kmalloc-backed mempools for LPFC_MBOXQ_t and lpfc_nodelist. Also frees | |
228 | * the VPI bitmask. | |
229 | * | |
230 | * Returns: None | |
231 | **/ | |
232 | void | |
233 | lpfc_mem_free_all(struct lpfc_hba *phba) | |
234 | { | |
235 | struct lpfc_sli *psli = &phba->sli; | |
236 | LPFC_MBOXQ_t *mbox, *next_mbox; | |
237 | struct lpfc_dmabuf *mp; | |
238 | ||
239 | /* Free memory used in mailbox queue back to mailbox memory pool */ | |
dea3101e | 240 | list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) { |
241 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
242 | if (mp) { | |
243 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
244 | kfree(mp); | |
245 | } | |
246 | list_del(&mbox->list); | |
247 | mempool_free(mbox, phba->mbox_mem_pool); | |
248 | } | |
da0436e9 | 249 | /* Free memory used in mailbox cmpl list back to mailbox memory pool */ |
92d7f7b0 JS |
250 | list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) { |
251 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
252 | if (mp) { | |
253 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
254 | kfree(mp); | |
255 | } | |
256 | list_del(&mbox->list); | |
257 | mempool_free(mbox, phba->mbox_mem_pool); | |
258 | } | |
da0436e9 JS |
259 | /* Free the active mailbox command back to the mailbox memory pool */ |
260 | spin_lock_irq(&phba->hbalock); | |
dea3101e | 261 | psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
da0436e9 | 262 | spin_unlock_irq(&phba->hbalock); |
dea3101e | 263 | if (psli->mbox_active) { |
264 | mbox = psli->mbox_active; | |
265 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
266 | if (mp) { | |
267 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
268 | kfree(mp); | |
269 | } | |
270 | mempool_free(mbox, phba->mbox_mem_pool); | |
271 | psli->mbox_active = NULL; | |
272 | } | |
273 | ||
da0436e9 JS |
274 | /* Free and destroy all the allocated memory pools */ |
275 | lpfc_mem_free(phba); | |
2e0fef85 | 276 | |
e59058c4 | 277 | /* Free the iocb lookup array */ |
9f49d3b0 JS |
278 | kfree(psli->iocbq_lookup); |
279 | psli->iocbq_lookup = NULL; | |
da0436e9 JS |
280 | |
281 | return; | |
dea3101e | 282 | } |
283 | ||
e59058c4 | 284 | /** |
3621a710 | 285 | * lpfc_mbuf_alloc - Allocate an mbuf from the lpfc_mbuf_pool PCI pool |
e59058c4 JS |
286 | * @phba: HBA which owns the pool to allocate from |
287 | * @mem_flags: indicates if this is a priority (MEM_PRI) allocation | |
288 | * @handle: used to return the DMA-mapped address of the mbuf | |
289 | * | |
290 | * Description: Allocates a DMA-mapped buffer from the lpfc_mbuf_pool PCI pool. | |
291 | * Allocates from generic pci_pool_alloc function first and if that fails and | |
292 | * mem_flags has MEM_PRI set (the only defined flag), returns an mbuf from the | |
293 | * HBA's pool. | |
294 | * | |
295 | * Notes: Not interrupt-safe. Must be called with no locks held. Takes | |
296 | * phba->hbalock. | |
297 | * | |
298 | * Returns: | |
299 | * pointer to the allocated mbuf on success | |
300 | * NULL on failure | |
301 | **/ | |
dea3101e | 302 | void * |
303 | lpfc_mbuf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) | |
304 | { | |
305 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
2e0fef85 | 306 | unsigned long iflags; |
dea3101e | 307 | void *ret; |
308 | ||
309 | ret = pci_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle); | |
310 | ||
2e0fef85 | 311 | spin_lock_irqsave(&phba->hbalock, iflags); |
92d7f7b0 | 312 | if (!ret && (mem_flags & MEM_PRI) && pool->current_count) { |
dea3101e | 313 | pool->current_count--; |
314 | ret = pool->elements[pool->current_count].virt; | |
315 | *handle = pool->elements[pool->current_count].phys; | |
316 | } | |
2e0fef85 | 317 | spin_unlock_irqrestore(&phba->hbalock, iflags); |
dea3101e | 318 | return ret; |
319 | } | |
320 | ||
e59058c4 | 321 | /** |
3621a710 | 322 | * __lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (locked) |
e59058c4 JS |
323 | * @phba: HBA which owns the pool to return to |
324 | * @virt: mbuf to free | |
325 | * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed | |
326 | * | |
327 | * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if | |
328 | * it is below its max_count, frees the mbuf otherwise. | |
329 | * | |
330 | * Notes: Must be called with phba->hbalock held to synchronize access to | |
331 | * lpfc_mbuf_safety_pool. | |
332 | * | |
333 | * Returns: None | |
334 | **/ | |
dea3101e | 335 | void |
2e0fef85 | 336 | __lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) |
dea3101e | 337 | { |
338 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
339 | ||
340 | if (pool->current_count < pool->max_count) { | |
341 | pool->elements[pool->current_count].virt = virt; | |
342 | pool->elements[pool->current_count].phys = dma; | |
343 | pool->current_count++; | |
344 | } else { | |
345 | pci_pool_free(phba->lpfc_mbuf_pool, virt, dma); | |
346 | } | |
347 | return; | |
348 | } | |
2e0fef85 | 349 | |
e59058c4 | 350 | /** |
3621a710 | 351 | * lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (unlocked) |
e59058c4 JS |
352 | * @phba: HBA which owns the pool to return to |
353 | * @virt: mbuf to free | |
354 | * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed | |
355 | * | |
356 | * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if | |
357 | * it is below its max_count, frees the mbuf otherwise. | |
358 | * | |
359 | * Notes: Takes phba->hbalock. Can be called with or without other locks held. | |
360 | * | |
361 | * Returns: None | |
362 | **/ | |
2e0fef85 JS |
363 | void |
364 | lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) | |
365 | { | |
366 | unsigned long iflags; | |
367 | ||
368 | spin_lock_irqsave(&phba->hbalock, iflags); | |
369 | __lpfc_mbuf_free(phba, virt, dma); | |
370 | spin_unlock_irqrestore(&phba->hbalock, iflags); | |
371 | return; | |
372 | } | |
ed957684 | 373 | |
e59058c4 | 374 | /** |
3621a710 | 375 | * lpfc_els_hbq_alloc - Allocate an HBQ buffer |
e59058c4 JS |
376 | * @phba: HBA to allocate HBQ buffer for |
377 | * | |
da0436e9 | 378 | * Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hrb_pool PCI |
e59058c4 JS |
379 | * pool along a non-DMA-mapped container for it. |
380 | * | |
381 | * Notes: Not interrupt-safe. Must be called with no locks held. | |
382 | * | |
383 | * Returns: | |
384 | * pointer to HBQ on success | |
385 | * NULL on failure | |
386 | **/ | |
51ef4c26 JS |
387 | struct hbq_dmabuf * |
388 | lpfc_els_hbq_alloc(struct lpfc_hba *phba) | |
ed957684 | 389 | { |
51ef4c26 JS |
390 | struct hbq_dmabuf *hbqbp; |
391 | ||
2e90f4b5 | 392 | hbqbp = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL); |
51ef4c26 JS |
393 | if (!hbqbp) |
394 | return NULL; | |
395 | ||
8568a4d2 | 396 | hbqbp->dbuf.virt = pci_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL, |
51ef4c26 JS |
397 | &hbqbp->dbuf.phys); |
398 | if (!hbqbp->dbuf.virt) { | |
399 | kfree(hbqbp); | |
400 | return NULL; | |
401 | } | |
402 | hbqbp->size = LPFC_BPL_SIZE; | |
403 | return hbqbp; | |
ed957684 JS |
404 | } |
405 | ||
e59058c4 | 406 | /** |
da0436e9 | 407 | * lpfc_els_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc |
e59058c4 JS |
408 | * @phba: HBA buffer was allocated for |
409 | * @hbqbp: HBQ container returned by lpfc_els_hbq_alloc | |
410 | * | |
411 | * Description: Frees both the container and the DMA-mapped buffer returned by | |
412 | * lpfc_els_hbq_alloc. | |
413 | * | |
414 | * Notes: Can be called with or without locks held. | |
415 | * | |
416 | * Returns: None | |
417 | **/ | |
ed957684 | 418 | void |
51ef4c26 | 419 | lpfc_els_hbq_free(struct lpfc_hba *phba, struct hbq_dmabuf *hbqbp) |
ed957684 | 420 | { |
8568a4d2 | 421 | pci_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys); |
51ef4c26 | 422 | kfree(hbqbp); |
ed957684 JS |
423 | return; |
424 | } | |
425 | ||
da0436e9 JS |
426 | /** |
427 | * lpfc_sli4_rb_alloc - Allocate an SLI4 Receive buffer | |
428 | * @phba: HBA to allocate a receive buffer for | |
429 | * | |
430 | * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI | |
431 | * pool along a non-DMA-mapped container for it. | |
432 | * | |
433 | * Notes: Not interrupt-safe. Must be called with no locks held. | |
434 | * | |
435 | * Returns: | |
436 | * pointer to HBQ on success | |
437 | * NULL on failure | |
438 | **/ | |
439 | struct hbq_dmabuf * | |
440 | lpfc_sli4_rb_alloc(struct lpfc_hba *phba) | |
441 | { | |
442 | struct hbq_dmabuf *dma_buf; | |
443 | ||
2e90f4b5 | 444 | dma_buf = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL); |
da0436e9 JS |
445 | if (!dma_buf) |
446 | return NULL; | |
447 | ||
448 | dma_buf->hbuf.virt = pci_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL, | |
449 | &dma_buf->hbuf.phys); | |
450 | if (!dma_buf->hbuf.virt) { | |
451 | kfree(dma_buf); | |
452 | return NULL; | |
453 | } | |
454 | dma_buf->dbuf.virt = pci_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL, | |
455 | &dma_buf->dbuf.phys); | |
456 | if (!dma_buf->dbuf.virt) { | |
457 | pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, | |
458 | dma_buf->hbuf.phys); | |
459 | kfree(dma_buf); | |
460 | return NULL; | |
461 | } | |
462 | dma_buf->size = LPFC_BPL_SIZE; | |
463 | return dma_buf; | |
464 | } | |
465 | ||
466 | /** | |
467 | * lpfc_sli4_rb_free - Frees a receive buffer | |
468 | * @phba: HBA buffer was allocated for | |
469 | * @dmab: DMA Buffer container returned by lpfc_sli4_hbq_alloc | |
470 | * | |
471 | * Description: Frees both the container and the DMA-mapped buffers returned by | |
472 | * lpfc_sli4_rb_alloc. | |
473 | * | |
474 | * Notes: Can be called with or without locks held. | |
475 | * | |
476 | * Returns: None | |
477 | **/ | |
478 | void | |
479 | lpfc_sli4_rb_free(struct lpfc_hba *phba, struct hbq_dmabuf *dmab) | |
480 | { | |
481 | pci_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys); | |
482 | pci_pool_free(phba->lpfc_drb_pool, dmab->dbuf.virt, dmab->dbuf.phys); | |
483 | kfree(dmab); | |
484 | return; | |
485 | } | |
486 | ||
e59058c4 | 487 | /** |
3621a710 | 488 | * lpfc_in_buf_free - Free a DMA buffer |
e59058c4 JS |
489 | * @phba: HBA buffer is associated with |
490 | * @mp: Buffer to free | |
491 | * | |
492 | * Description: Frees the given DMA buffer in the appropriate way given if the | |
493 | * HBA is running in SLI3 mode with HBQs enabled. | |
494 | * | |
495 | * Notes: Takes phba->hbalock. Can be called with or without other locks held. | |
496 | * | |
497 | * Returns: None | |
498 | **/ | |
92d7f7b0 JS |
499 | void |
500 | lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp) | |
501 | { | |
502 | struct hbq_dmabuf *hbq_entry; | |
3163f725 | 503 | unsigned long flags; |
92d7f7b0 | 504 | |
7f5f3d0d JS |
505 | if (!mp) |
506 | return; | |
507 | ||
92d7f7b0 | 508 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
3163f725 JS |
509 | /* Check whether HBQ is still in use */ |
510 | spin_lock_irqsave(&phba->hbalock, flags); | |
511 | if (!phba->hbq_in_use) { | |
512 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
513 | return; | |
514 | } | |
92d7f7b0 | 515 | hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf); |
3163f725 | 516 | list_del(&hbq_entry->dbuf.list); |
92d7f7b0 | 517 | if (hbq_entry->tag == -1) { |
51ef4c26 JS |
518 | (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) |
519 | (phba, hbq_entry); | |
92d7f7b0 JS |
520 | } else { |
521 | lpfc_sli_free_hbq(phba, hbq_entry); | |
522 | } | |
3163f725 | 523 | spin_unlock_irqrestore(&phba->hbalock, flags); |
92d7f7b0 JS |
524 | } else { |
525 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
526 | kfree(mp); | |
527 | } | |
528 | return; | |
529 | } |