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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. * |
b857ff33 | 4 | * Copyright (C) 2004-2014 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" | |
cff261f6 | 41 | #include "lpfc_logmsg.h" |
dea3101e | 42 | |
43 | #define LPFC_MBUF_POOL_SIZE 64 /* max elements in MBUF safety pool */ | |
44 | #define LPFC_MEM_POOL_SIZE 64 /* max elem in non-DMA safety pool */ | |
1ba981fd | 45 | #define LPFC_DEVICE_DATA_POOL_SIZE 64 /* max elements in device data pool */ |
dea3101e | 46 | |
cff261f6 JS |
47 | int |
48 | lpfc_mem_alloc_active_rrq_pool_s4(struct lpfc_hba *phba) { | |
49 | size_t bytes; | |
50 | int max_xri = phba->sli4_hba.max_cfg_param.max_xri; | |
51 | ||
52 | if (max_xri <= 0) | |
53 | return -ENOMEM; | |
54 | bytes = ((BITS_PER_LONG - 1 + max_xri) / BITS_PER_LONG) * | |
55 | sizeof(unsigned long); | |
56 | phba->cfg_rrq_xri_bitmap_sz = bytes; | |
57 | phba->active_rrq_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, | |
58 | bytes); | |
59 | if (!phba->active_rrq_pool) | |
60 | return -ENOMEM; | |
61 | else | |
62 | return 0; | |
63 | } | |
2e0fef85 | 64 | |
e59058c4 | 65 | /** |
3621a710 | 66 | * lpfc_mem_alloc - create and allocate all PCI and memory pools |
e59058c4 JS |
67 | * @phba: HBA to allocate pools for |
68 | * | |
69 | * Description: Creates and allocates PCI pools lpfc_scsi_dma_buf_pool, | |
da0436e9 | 70 | * lpfc_mbuf_pool, lpfc_hrb_pool. Creates and allocates kmalloc-backed mempools |
e59058c4 JS |
71 | * for LPFC_MBOXQ_t and lpfc_nodelist. Also allocates the VPI bitmask. |
72 | * | |
73 | * Notes: Not interrupt-safe. Must be called with no locks held. If any | |
74 | * allocation fails, frees all successfully allocated memory before returning. | |
75 | * | |
76 | * Returns: | |
77 | * 0 on success | |
78 | * -ENOMEM on failure (if any memory allocations fail) | |
79 | **/ | |
dea3101e | 80 | int |
da0436e9 | 81 | lpfc_mem_alloc(struct lpfc_hba *phba, int align) |
dea3101e | 82 | { |
83 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
84 | int i; | |
85 | ||
96f7077f JS |
86 | if (phba->sli_rev == LPFC_SLI_REV4) { |
87 | /* Calculate alignment */ | |
88 | if (phba->cfg_sg_dma_buf_size < SLI4_PAGE_SIZE) | |
89 | i = phba->cfg_sg_dma_buf_size; | |
90 | else | |
91 | i = SLI4_PAGE_SIZE; | |
92 | ||
da0436e9 JS |
93 | phba->lpfc_scsi_dma_buf_pool = |
94 | pci_pool_create("lpfc_scsi_dma_buf_pool", | |
95 | phba->pcidev, | |
96 | phba->cfg_sg_dma_buf_size, | |
96f7077f | 97 | i, |
da0436e9 | 98 | 0); |
96f7077f | 99 | } else { |
da0436e9 JS |
100 | phba->lpfc_scsi_dma_buf_pool = |
101 | pci_pool_create("lpfc_scsi_dma_buf_pool", | |
102 | phba->pcidev, phba->cfg_sg_dma_buf_size, | |
103 | align, 0); | |
96f7077f JS |
104 | } |
105 | ||
dea3101e | 106 | if (!phba->lpfc_scsi_dma_buf_pool) |
107 | goto fail; | |
108 | ||
109 | phba->lpfc_mbuf_pool = pci_pool_create("lpfc_mbuf_pool", phba->pcidev, | |
da0436e9 JS |
110 | LPFC_BPL_SIZE, |
111 | align, 0); | |
dea3101e | 112 | if (!phba->lpfc_mbuf_pool) |
113 | goto fail_free_dma_buf_pool; | |
114 | ||
115 | pool->elements = kmalloc(sizeof(struct lpfc_dmabuf) * | |
116 | LPFC_MBUF_POOL_SIZE, GFP_KERNEL); | |
a96e0c77 MK |
117 | if (!pool->elements) |
118 | goto fail_free_lpfc_mbuf_pool; | |
119 | ||
dea3101e | 120 | pool->max_count = 0; |
121 | pool->current_count = 0; | |
122 | for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) { | |
123 | pool->elements[i].virt = pci_pool_alloc(phba->lpfc_mbuf_pool, | |
124 | GFP_KERNEL, &pool->elements[i].phys); | |
125 | if (!pool->elements[i].virt) | |
126 | goto fail_free_mbuf_pool; | |
127 | pool->max_count++; | |
128 | pool->current_count++; | |
129 | } | |
130 | ||
0eaae62a MD |
131 | phba->mbox_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, |
132 | sizeof(LPFC_MBOXQ_t)); | |
dea3101e | 133 | if (!phba->mbox_mem_pool) |
134 | goto fail_free_mbuf_pool; | |
135 | ||
0eaae62a MD |
136 | phba->nlp_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, |
137 | sizeof(struct lpfc_nodelist)); | |
dea3101e | 138 | if (!phba->nlp_mem_pool) |
139 | goto fail_free_mbox_pool; | |
8568a4d2 JS |
140 | |
141 | if (phba->sli_rev == LPFC_SLI_REV4) { | |
19ca7609 JS |
142 | phba->rrq_pool = |
143 | mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, | |
144 | sizeof(struct lpfc_node_rrq)); | |
145 | if (!phba->rrq_pool) | |
146 | goto fail_free_nlp_mem_pool; | |
8568a4d2 | 147 | phba->lpfc_hrb_pool = pci_pool_create("lpfc_hrb_pool", |
da0436e9 JS |
148 | phba->pcidev, |
149 | LPFC_HDR_BUF_SIZE, align, 0); | |
8568a4d2 | 150 | if (!phba->lpfc_hrb_pool) |
19ca7609 | 151 | goto fail_free_rrq_mem_pool; |
8568a4d2 JS |
152 | |
153 | phba->lpfc_drb_pool = pci_pool_create("lpfc_drb_pool", | |
da0436e9 JS |
154 | phba->pcidev, |
155 | LPFC_DATA_BUF_SIZE, align, 0); | |
8568a4d2 JS |
156 | if (!phba->lpfc_drb_pool) |
157 | goto fail_free_hrb_pool; | |
158 | phba->lpfc_hbq_pool = NULL; | |
159 | } else { | |
160 | phba->lpfc_hbq_pool = pci_pool_create("lpfc_hbq_pool", | |
161 | phba->pcidev, LPFC_BPL_SIZE, align, 0); | |
162 | if (!phba->lpfc_hbq_pool) | |
163 | goto fail_free_nlp_mem_pool; | |
164 | phba->lpfc_hrb_pool = NULL; | |
165 | phba->lpfc_drb_pool = NULL; | |
166 | } | |
92d7f7b0 | 167 | |
1ba981fd JS |
168 | if (phba->cfg_EnableXLane) { |
169 | phba->device_data_mem_pool = mempool_create_kmalloc_pool( | |
170 | LPFC_DEVICE_DATA_POOL_SIZE, | |
171 | sizeof(struct lpfc_device_data)); | |
172 | if (!phba->device_data_mem_pool) | |
173 | goto fail_free_hrb_pool; | |
174 | } else { | |
175 | phba->device_data_mem_pool = NULL; | |
176 | } | |
177 | ||
dea3101e | 178 | return 0; |
8568a4d2 | 179 | fail_free_hrb_pool: |
da0436e9 JS |
180 | pci_pool_destroy(phba->lpfc_hrb_pool); |
181 | phba->lpfc_hrb_pool = NULL; | |
19ca7609 JS |
182 | fail_free_rrq_mem_pool: |
183 | mempool_destroy(phba->rrq_pool); | |
184 | phba->rrq_pool = NULL; | |
ed957684 JS |
185 | fail_free_nlp_mem_pool: |
186 | mempool_destroy(phba->nlp_mem_pool); | |
187 | phba->nlp_mem_pool = NULL; | |
dea3101e | 188 | fail_free_mbox_pool: |
189 | mempool_destroy(phba->mbox_mem_pool); | |
2e0fef85 | 190 | phba->mbox_mem_pool = NULL; |
dea3101e | 191 | fail_free_mbuf_pool: |
a96e0c77 | 192 | while (i--) |
dea3101e | 193 | pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, |
194 | pool->elements[i].phys); | |
195 | kfree(pool->elements); | |
a96e0c77 | 196 | fail_free_lpfc_mbuf_pool: |
dea3101e | 197 | pci_pool_destroy(phba->lpfc_mbuf_pool); |
2e0fef85 | 198 | phba->lpfc_mbuf_pool = NULL; |
dea3101e | 199 | fail_free_dma_buf_pool: |
200 | pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool); | |
2e0fef85 | 201 | phba->lpfc_scsi_dma_buf_pool = NULL; |
dea3101e | 202 | fail: |
203 | return -ENOMEM; | |
204 | } | |
205 | ||
e59058c4 | 206 | /** |
da0436e9 | 207 | * lpfc_mem_free - Frees memory allocated by lpfc_mem_alloc |
e59058c4 JS |
208 | * @phba: HBA to free memory for |
209 | * | |
da0436e9 JS |
210 | * Description: Free the memory allocated by lpfc_mem_alloc routine. This |
211 | * routine is a the counterpart of lpfc_mem_alloc. | |
e59058c4 JS |
212 | * |
213 | * Returns: None | |
214 | **/ | |
dea3101e | 215 | void |
da0436e9 | 216 | lpfc_mem_free(struct lpfc_hba *phba) |
dea3101e | 217 | { |
dea3101e | 218 | int i; |
da0436e9 | 219 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; |
1ba981fd | 220 | struct lpfc_device_data *device_data; |
dea3101e | 221 | |
da0436e9 | 222 | /* Free HBQ pools */ |
ed957684 | 223 | lpfc_sli_hbqbuf_free_all(phba); |
8568a4d2 JS |
224 | if (phba->lpfc_drb_pool) |
225 | pci_pool_destroy(phba->lpfc_drb_pool); | |
da0436e9 | 226 | phba->lpfc_drb_pool = NULL; |
8568a4d2 JS |
227 | if (phba->lpfc_hrb_pool) |
228 | pci_pool_destroy(phba->lpfc_hrb_pool); | |
da0436e9 JS |
229 | phba->lpfc_hrb_pool = NULL; |
230 | ||
8568a4d2 JS |
231 | if (phba->lpfc_hbq_pool) |
232 | pci_pool_destroy(phba->lpfc_hbq_pool); | |
233 | phba->lpfc_hbq_pool = NULL; | |
9be32181 | 234 | mempool_destroy(phba->rrq_pool); |
21a688cd JS |
235 | phba->rrq_pool = NULL; |
236 | ||
da0436e9 JS |
237 | /* Free NLP memory pool */ |
238 | mempool_destroy(phba->nlp_mem_pool); | |
239 | phba->nlp_mem_pool = NULL; | |
9be32181 | 240 | if (phba->sli_rev == LPFC_SLI_REV4) { |
cff261f6 JS |
241 | mempool_destroy(phba->active_rrq_pool); |
242 | phba->active_rrq_pool = NULL; | |
243 | } | |
da0436e9 JS |
244 | |
245 | /* Free mbox memory pool */ | |
246 | mempool_destroy(phba->mbox_mem_pool); | |
247 | phba->mbox_mem_pool = NULL; | |
248 | ||
249 | /* Free MBUF memory pool */ | |
250 | for (i = 0; i < pool->current_count; i++) | |
251 | pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, | |
252 | pool->elements[i].phys); | |
253 | kfree(pool->elements); | |
254 | ||
255 | pci_pool_destroy(phba->lpfc_mbuf_pool); | |
256 | phba->lpfc_mbuf_pool = NULL; | |
ed957684 | 257 | |
da0436e9 JS |
258 | /* Free DMA buffer memory pool */ |
259 | pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool); | |
260 | phba->lpfc_scsi_dma_buf_pool = NULL; | |
261 | ||
1ba981fd JS |
262 | /* Free Device Data memory pool */ |
263 | if (phba->device_data_mem_pool) { | |
264 | /* Ensure all objects have been returned to the pool */ | |
265 | while (!list_empty(&phba->luns)) { | |
266 | device_data = list_first_entry(&phba->luns, | |
267 | struct lpfc_device_data, | |
268 | listentry); | |
269 | list_del(&device_data->listentry); | |
270 | mempool_free(device_data, phba->device_data_mem_pool); | |
271 | } | |
272 | mempool_destroy(phba->device_data_mem_pool); | |
273 | } | |
274 | phba->device_data_mem_pool = NULL; | |
da0436e9 JS |
275 | return; |
276 | } | |
277 | ||
278 | /** | |
279 | * lpfc_mem_free_all - Frees all PCI and driver memory | |
280 | * @phba: HBA to free memory for | |
281 | * | |
282 | * Description: Free memory from PCI and driver memory pools and also those | |
283 | * used : lpfc_scsi_dma_buf_pool, lpfc_mbuf_pool, lpfc_hrb_pool. Frees | |
284 | * kmalloc-backed mempools for LPFC_MBOXQ_t and lpfc_nodelist. Also frees | |
285 | * the VPI bitmask. | |
286 | * | |
287 | * Returns: None | |
288 | **/ | |
289 | void | |
290 | lpfc_mem_free_all(struct lpfc_hba *phba) | |
291 | { | |
292 | struct lpfc_sli *psli = &phba->sli; | |
293 | LPFC_MBOXQ_t *mbox, *next_mbox; | |
294 | struct lpfc_dmabuf *mp; | |
295 | ||
296 | /* Free memory used in mailbox queue back to mailbox memory pool */ | |
dea3101e | 297 | list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) { |
298 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
299 | if (mp) { | |
300 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
301 | kfree(mp); | |
302 | } | |
303 | list_del(&mbox->list); | |
304 | mempool_free(mbox, phba->mbox_mem_pool); | |
305 | } | |
da0436e9 | 306 | /* Free memory used in mailbox cmpl list back to mailbox memory pool */ |
92d7f7b0 JS |
307 | list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) { |
308 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
309 | if (mp) { | |
310 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
311 | kfree(mp); | |
312 | } | |
313 | list_del(&mbox->list); | |
314 | mempool_free(mbox, phba->mbox_mem_pool); | |
315 | } | |
da0436e9 JS |
316 | /* Free the active mailbox command back to the mailbox memory pool */ |
317 | spin_lock_irq(&phba->hbalock); | |
dea3101e | 318 | psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
da0436e9 | 319 | spin_unlock_irq(&phba->hbalock); |
dea3101e | 320 | if (psli->mbox_active) { |
321 | mbox = psli->mbox_active; | |
322 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
323 | if (mp) { | |
324 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
325 | kfree(mp); | |
326 | } | |
327 | mempool_free(mbox, phba->mbox_mem_pool); | |
328 | psli->mbox_active = NULL; | |
329 | } | |
330 | ||
da0436e9 JS |
331 | /* Free and destroy all the allocated memory pools */ |
332 | lpfc_mem_free(phba); | |
2e0fef85 | 333 | |
e59058c4 | 334 | /* Free the iocb lookup array */ |
9f49d3b0 JS |
335 | kfree(psli->iocbq_lookup); |
336 | psli->iocbq_lookup = NULL; | |
da0436e9 JS |
337 | |
338 | return; | |
dea3101e | 339 | } |
340 | ||
e59058c4 | 341 | /** |
3621a710 | 342 | * lpfc_mbuf_alloc - Allocate an mbuf from the lpfc_mbuf_pool PCI pool |
e59058c4 JS |
343 | * @phba: HBA which owns the pool to allocate from |
344 | * @mem_flags: indicates if this is a priority (MEM_PRI) allocation | |
345 | * @handle: used to return the DMA-mapped address of the mbuf | |
346 | * | |
347 | * Description: Allocates a DMA-mapped buffer from the lpfc_mbuf_pool PCI pool. | |
348 | * Allocates from generic pci_pool_alloc function first and if that fails and | |
349 | * mem_flags has MEM_PRI set (the only defined flag), returns an mbuf from the | |
350 | * HBA's pool. | |
351 | * | |
352 | * Notes: Not interrupt-safe. Must be called with no locks held. Takes | |
353 | * phba->hbalock. | |
354 | * | |
355 | * Returns: | |
356 | * pointer to the allocated mbuf on success | |
357 | * NULL on failure | |
358 | **/ | |
dea3101e | 359 | void * |
360 | lpfc_mbuf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) | |
361 | { | |
362 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
2e0fef85 | 363 | unsigned long iflags; |
dea3101e | 364 | void *ret; |
365 | ||
366 | ret = pci_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle); | |
367 | ||
2e0fef85 | 368 | spin_lock_irqsave(&phba->hbalock, iflags); |
92d7f7b0 | 369 | if (!ret && (mem_flags & MEM_PRI) && pool->current_count) { |
dea3101e | 370 | pool->current_count--; |
371 | ret = pool->elements[pool->current_count].virt; | |
372 | *handle = pool->elements[pool->current_count].phys; | |
373 | } | |
2e0fef85 | 374 | spin_unlock_irqrestore(&phba->hbalock, iflags); |
dea3101e | 375 | return ret; |
376 | } | |
377 | ||
e59058c4 | 378 | /** |
3621a710 | 379 | * __lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (locked) |
e59058c4 JS |
380 | * @phba: HBA which owns the pool to return to |
381 | * @virt: mbuf to free | |
382 | * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed | |
383 | * | |
384 | * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if | |
385 | * it is below its max_count, frees the mbuf otherwise. | |
386 | * | |
387 | * Notes: Must be called with phba->hbalock held to synchronize access to | |
388 | * lpfc_mbuf_safety_pool. | |
389 | * | |
390 | * Returns: None | |
391 | **/ | |
dea3101e | 392 | void |
2e0fef85 | 393 | __lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) |
dea3101e | 394 | { |
395 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
396 | ||
397 | if (pool->current_count < pool->max_count) { | |
398 | pool->elements[pool->current_count].virt = virt; | |
399 | pool->elements[pool->current_count].phys = dma; | |
400 | pool->current_count++; | |
401 | } else { | |
402 | pci_pool_free(phba->lpfc_mbuf_pool, virt, dma); | |
403 | } | |
404 | return; | |
405 | } | |
2e0fef85 | 406 | |
e59058c4 | 407 | /** |
3621a710 | 408 | * lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (unlocked) |
e59058c4 JS |
409 | * @phba: HBA which owns the pool to return to |
410 | * @virt: mbuf to free | |
411 | * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed | |
412 | * | |
413 | * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if | |
414 | * it is below its max_count, frees the mbuf otherwise. | |
415 | * | |
416 | * Notes: Takes phba->hbalock. Can be called with or without other locks held. | |
417 | * | |
418 | * Returns: None | |
419 | **/ | |
2e0fef85 JS |
420 | void |
421 | lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) | |
422 | { | |
423 | unsigned long iflags; | |
424 | ||
425 | spin_lock_irqsave(&phba->hbalock, iflags); | |
426 | __lpfc_mbuf_free(phba, virt, dma); | |
427 | spin_unlock_irqrestore(&phba->hbalock, iflags); | |
428 | return; | |
429 | } | |
ed957684 | 430 | |
e59058c4 | 431 | /** |
3621a710 | 432 | * lpfc_els_hbq_alloc - Allocate an HBQ buffer |
e59058c4 JS |
433 | * @phba: HBA to allocate HBQ buffer for |
434 | * | |
da0436e9 | 435 | * Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hrb_pool PCI |
e59058c4 JS |
436 | * pool along a non-DMA-mapped container for it. |
437 | * | |
438 | * Notes: Not interrupt-safe. Must be called with no locks held. | |
439 | * | |
440 | * Returns: | |
441 | * pointer to HBQ on success | |
442 | * NULL on failure | |
443 | **/ | |
51ef4c26 JS |
444 | struct hbq_dmabuf * |
445 | lpfc_els_hbq_alloc(struct lpfc_hba *phba) | |
ed957684 | 446 | { |
51ef4c26 JS |
447 | struct hbq_dmabuf *hbqbp; |
448 | ||
2e90f4b5 | 449 | hbqbp = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL); |
51ef4c26 JS |
450 | if (!hbqbp) |
451 | return NULL; | |
452 | ||
8568a4d2 | 453 | hbqbp->dbuf.virt = pci_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL, |
51ef4c26 JS |
454 | &hbqbp->dbuf.phys); |
455 | if (!hbqbp->dbuf.virt) { | |
456 | kfree(hbqbp); | |
457 | return NULL; | |
458 | } | |
459 | hbqbp->size = LPFC_BPL_SIZE; | |
460 | return hbqbp; | |
ed957684 JS |
461 | } |
462 | ||
e59058c4 | 463 | /** |
da0436e9 | 464 | * lpfc_els_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc |
e59058c4 JS |
465 | * @phba: HBA buffer was allocated for |
466 | * @hbqbp: HBQ container returned by lpfc_els_hbq_alloc | |
467 | * | |
468 | * Description: Frees both the container and the DMA-mapped buffer returned by | |
469 | * lpfc_els_hbq_alloc. | |
470 | * | |
471 | * Notes: Can be called with or without locks held. | |
472 | * | |
473 | * Returns: None | |
474 | **/ | |
ed957684 | 475 | void |
51ef4c26 | 476 | lpfc_els_hbq_free(struct lpfc_hba *phba, struct hbq_dmabuf *hbqbp) |
ed957684 | 477 | { |
8568a4d2 | 478 | pci_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys); |
51ef4c26 | 479 | kfree(hbqbp); |
ed957684 JS |
480 | return; |
481 | } | |
482 | ||
da0436e9 JS |
483 | /** |
484 | * lpfc_sli4_rb_alloc - Allocate an SLI4 Receive buffer | |
485 | * @phba: HBA to allocate a receive buffer for | |
486 | * | |
487 | * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI | |
488 | * pool along a non-DMA-mapped container for it. | |
489 | * | |
490 | * Notes: Not interrupt-safe. Must be called with no locks held. | |
491 | * | |
492 | * Returns: | |
493 | * pointer to HBQ on success | |
494 | * NULL on failure | |
495 | **/ | |
496 | struct hbq_dmabuf * | |
497 | lpfc_sli4_rb_alloc(struct lpfc_hba *phba) | |
498 | { | |
499 | struct hbq_dmabuf *dma_buf; | |
500 | ||
2e90f4b5 | 501 | dma_buf = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL); |
da0436e9 JS |
502 | if (!dma_buf) |
503 | return NULL; | |
504 | ||
505 | dma_buf->hbuf.virt = pci_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL, | |
506 | &dma_buf->hbuf.phys); | |
507 | if (!dma_buf->hbuf.virt) { | |
508 | kfree(dma_buf); | |
509 | return NULL; | |
510 | } | |
511 | dma_buf->dbuf.virt = pci_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL, | |
512 | &dma_buf->dbuf.phys); | |
513 | if (!dma_buf->dbuf.virt) { | |
514 | pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, | |
515 | dma_buf->hbuf.phys); | |
516 | kfree(dma_buf); | |
517 | return NULL; | |
518 | } | |
519 | dma_buf->size = LPFC_BPL_SIZE; | |
520 | return dma_buf; | |
521 | } | |
522 | ||
523 | /** | |
524 | * lpfc_sli4_rb_free - Frees a receive buffer | |
525 | * @phba: HBA buffer was allocated for | |
526 | * @dmab: DMA Buffer container returned by lpfc_sli4_hbq_alloc | |
527 | * | |
528 | * Description: Frees both the container and the DMA-mapped buffers returned by | |
529 | * lpfc_sli4_rb_alloc. | |
530 | * | |
531 | * Notes: Can be called with or without locks held. | |
532 | * | |
533 | * Returns: None | |
534 | **/ | |
535 | void | |
536 | lpfc_sli4_rb_free(struct lpfc_hba *phba, struct hbq_dmabuf *dmab) | |
537 | { | |
538 | pci_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys); | |
539 | pci_pool_free(phba->lpfc_drb_pool, dmab->dbuf.virt, dmab->dbuf.phys); | |
540 | kfree(dmab); | |
541 | return; | |
542 | } | |
543 | ||
e59058c4 | 544 | /** |
3621a710 | 545 | * lpfc_in_buf_free - Free a DMA buffer |
e59058c4 JS |
546 | * @phba: HBA buffer is associated with |
547 | * @mp: Buffer to free | |
548 | * | |
549 | * Description: Frees the given DMA buffer in the appropriate way given if the | |
550 | * HBA is running in SLI3 mode with HBQs enabled. | |
551 | * | |
552 | * Notes: Takes phba->hbalock. Can be called with or without other locks held. | |
553 | * | |
554 | * Returns: None | |
555 | **/ | |
92d7f7b0 JS |
556 | void |
557 | lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp) | |
558 | { | |
559 | struct hbq_dmabuf *hbq_entry; | |
3163f725 | 560 | unsigned long flags; |
92d7f7b0 | 561 | |
7f5f3d0d JS |
562 | if (!mp) |
563 | return; | |
564 | ||
92d7f7b0 | 565 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
3163f725 JS |
566 | /* Check whether HBQ is still in use */ |
567 | spin_lock_irqsave(&phba->hbalock, flags); | |
568 | if (!phba->hbq_in_use) { | |
569 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
570 | return; | |
571 | } | |
92d7f7b0 | 572 | hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf); |
3163f725 | 573 | list_del(&hbq_entry->dbuf.list); |
92d7f7b0 | 574 | if (hbq_entry->tag == -1) { |
51ef4c26 JS |
575 | (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) |
576 | (phba, hbq_entry); | |
92d7f7b0 JS |
577 | } else { |
578 | lpfc_sli_free_hbq(phba, hbq_entry); | |
579 | } | |
3163f725 | 580 | spin_unlock_irqrestore(&phba->hbalock, flags); |
92d7f7b0 JS |
581 | } else { |
582 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
583 | kfree(mp); | |
584 | } | |
585 | return; | |
586 | } |