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dea3101e JB |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
d080abe0 JS |
4 | * Copyright (C) 2017 Broadcom. All Rights Reserved. The term * |
5 | * “Broadcom” refers to Broadcom Limited and/or its subsidiaries. * | |
b857ff33 | 6 | * Copyright (C) 2004-2014 Emulex. All rights reserved. * |
c44ce173 | 7 | * EMULEX and SLI are trademarks of Emulex. * |
d080abe0 | 8 | * www.broadcom.com * |
c44ce173 | 9 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
dea3101e JB |
10 | * * |
11 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
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. * | |
dea3101e JB |
22 | *******************************************************************/ |
23 | ||
dea3101e | 24 | #include <linux/mempool.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
dea3101e JB |
26 | #include <linux/pci.h> |
27 | #include <linux/interrupt.h> | |
28 | ||
895427bd | 29 | #include <scsi/scsi.h> |
f888ba3c JSEC |
30 | #include <scsi/scsi_device.h> |
31 | #include <scsi/scsi_transport_fc.h> | |
895427bd | 32 | #include <scsi/fc/fc_fs.h> |
f888ba3c | 33 | |
895427bd | 34 | #include <linux/nvme-fc-driver.h> |
91886523 | 35 | |
da0436e9 | 36 | #include "lpfc_hw4.h" |
dea3101e JB |
37 | #include "lpfc_hw.h" |
38 | #include "lpfc_sli.h" | |
da0436e9 | 39 | #include "lpfc_sli4.h" |
ea2151b4 | 40 | #include "lpfc_nl.h" |
dea3101e | 41 | #include "lpfc_disc.h" |
dea3101e | 42 | #include "lpfc.h" |
895427bd JS |
43 | #include "lpfc_scsi.h" |
44 | #include "lpfc_nvme.h" | |
f358dd0c | 45 | #include "lpfc_nvmet.h" |
dea3101e | 46 | #include "lpfc_crtn.h" |
cff261f6 | 47 | #include "lpfc_logmsg.h" |
dea3101e JB |
48 | |
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 */ | |
1ba981fd | 51 | #define LPFC_DEVICE_DATA_POOL_SIZE 64 /* max elements in device data pool */ |
dea3101e | 52 | |
cff261f6 JS |
53 | int |
54 | lpfc_mem_alloc_active_rrq_pool_s4(struct lpfc_hba *phba) { | |
55 | size_t bytes; | |
56 | int max_xri = phba->sli4_hba.max_cfg_param.max_xri; | |
57 | ||
58 | if (max_xri <= 0) | |
59 | return -ENOMEM; | |
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, | |
64 | bytes); | |
65 | if (!phba->active_rrq_pool) | |
66 | return -ENOMEM; | |
67 | else | |
68 | return 0; | |
69 | } | |
2e0fef85 | 70 | |
e59058c4 | 71 | /** |
3621a710 | 72 | * lpfc_mem_alloc - create and allocate all PCI and memory pools |
e59058c4 JS |
73 | * @phba: HBA to allocate pools for |
74 | * | |
895427bd | 75 | * Description: Creates and allocates PCI pools lpfc_sg_dma_buf_pool, |
da0436e9 | 76 | * lpfc_mbuf_pool, lpfc_hrb_pool. Creates and allocates kmalloc-backed mempools |
e59058c4 JS |
77 | * for LPFC_MBOXQ_t and lpfc_nodelist. Also allocates the VPI bitmask. |
78 | * | |
79 | * Notes: Not interrupt-safe. Must be called with no locks held. If any | |
80 | * allocation fails, frees all successfully allocated memory before returning. | |
81 | * | |
82 | * Returns: | |
83 | * 0 on success | |
84 | * -ENOMEM on failure (if any memory allocations fail) | |
85 | **/ | |
dea3101e | 86 | int |
da0436e9 | 87 | lpfc_mem_alloc(struct lpfc_hba *phba, int align) |
dea3101e JB |
88 | { |
89 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
90 | int i; | |
91 | ||
96f7077f JS |
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; | |
96 | else | |
97 | i = SLI4_PAGE_SIZE; | |
98 | ||
895427bd JS |
99 | phba->lpfc_sg_dma_buf_pool = |
100 | pci_pool_create("lpfc_sg_dma_buf_pool", | |
101 | phba->pcidev, | |
102 | phba->cfg_sg_dma_buf_size, | |
103 | i, 0); | |
104 | if (!phba->lpfc_sg_dma_buf_pool) | |
105 | goto fail; | |
106 | ||
96f7077f | 107 | } else { |
895427bd JS |
108 | phba->lpfc_sg_dma_buf_pool = |
109 | pci_pool_create("lpfc_sg_dma_buf_pool", | |
110 | phba->pcidev, phba->cfg_sg_dma_buf_size, | |
111 | align, 0); | |
96f7077f | 112 | |
895427bd JS |
113 | if (!phba->lpfc_sg_dma_buf_pool) |
114 | goto fail; | |
115 | } | |
dea3101e JB |
116 | |
117 | phba->lpfc_mbuf_pool = pci_pool_create("lpfc_mbuf_pool", phba->pcidev, | |
da0436e9 JS |
118 | LPFC_BPL_SIZE, |
119 | align, 0); | |
dea3101e JB |
120 | if (!phba->lpfc_mbuf_pool) |
121 | goto fail_free_dma_buf_pool; | |
122 | ||
123 | pool->elements = kmalloc(sizeof(struct lpfc_dmabuf) * | |
124 | LPFC_MBUF_POOL_SIZE, GFP_KERNEL); | |
a96e0c77 MK |
125 | if (!pool->elements) |
126 | goto fail_free_lpfc_mbuf_pool; | |
127 | ||
dea3101e JB |
128 | pool->max_count = 0; |
129 | pool->current_count = 0; | |
130 | for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) { | |
131 | pool->elements[i].virt = pci_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; | |
135 | pool->max_count++; | |
136 | pool->current_count++; | |
137 | } | |
138 | ||
0eaae62a MD |
139 | phba->mbox_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, |
140 | sizeof(LPFC_MBOXQ_t)); | |
dea3101e JB |
141 | if (!phba->mbox_mem_pool) |
142 | goto fail_free_mbuf_pool; | |
143 | ||
0eaae62a MD |
144 | phba->nlp_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, |
145 | sizeof(struct lpfc_nodelist)); | |
dea3101e JB |
146 | if (!phba->nlp_mem_pool) |
147 | goto fail_free_mbox_pool; | |
8568a4d2 JS |
148 | |
149 | if (phba->sli_rev == LPFC_SLI_REV4) { | |
19ca7609 JS |
150 | phba->rrq_pool = |
151 | mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, | |
152 | sizeof(struct lpfc_node_rrq)); | |
153 | if (!phba->rrq_pool) | |
154 | goto fail_free_nlp_mem_pool; | |
8568a4d2 | 155 | phba->lpfc_hrb_pool = pci_pool_create("lpfc_hrb_pool", |
da0436e9 JS |
156 | phba->pcidev, |
157 | LPFC_HDR_BUF_SIZE, align, 0); | |
8568a4d2 | 158 | if (!phba->lpfc_hrb_pool) |
19ca7609 | 159 | goto fail_free_rrq_mem_pool; |
8568a4d2 JS |
160 | |
161 | phba->lpfc_drb_pool = pci_pool_create("lpfc_drb_pool", | |
da0436e9 JS |
162 | phba->pcidev, |
163 | LPFC_DATA_BUF_SIZE, align, 0); | |
8568a4d2 JS |
164 | if (!phba->lpfc_drb_pool) |
165 | goto fail_free_hrb_pool; | |
166 | phba->lpfc_hbq_pool = NULL; | |
167 | } else { | |
168 | phba->lpfc_hbq_pool = pci_pool_create("lpfc_hbq_pool", | |
169 | phba->pcidev, 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; | |
174 | } | |
92d7f7b0 | 175 | |
1ba981fd JS |
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) | |
895427bd | 181 | goto fail_free_drb_pool; |
1ba981fd JS |
182 | } else { |
183 | phba->device_data_mem_pool = NULL; | |
184 | } | |
185 | ||
dea3101e | 186 | return 0; |
895427bd JS |
187 | fail_free_drb_pool: |
188 | pci_pool_destroy(phba->lpfc_drb_pool); | |
189 | phba->lpfc_drb_pool = NULL; | |
8568a4d2 | 190 | fail_free_hrb_pool: |
da0436e9 JS |
191 | pci_pool_destroy(phba->lpfc_hrb_pool); |
192 | phba->lpfc_hrb_pool = NULL; | |
19ca7609 JS |
193 | fail_free_rrq_mem_pool: |
194 | mempool_destroy(phba->rrq_pool); | |
195 | phba->rrq_pool = NULL; | |
ed957684 JS |
196 | fail_free_nlp_mem_pool: |
197 | mempool_destroy(phba->nlp_mem_pool); | |
198 | phba->nlp_mem_pool = NULL; | |
dea3101e JB |
199 | fail_free_mbox_pool: |
200 | mempool_destroy(phba->mbox_mem_pool); | |
2e0fef85 | 201 | phba->mbox_mem_pool = NULL; |
dea3101e | 202 | fail_free_mbuf_pool: |
a96e0c77 | 203 | while (i--) |
dea3101e JB |
204 | pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, |
205 | pool->elements[i].phys); | |
206 | kfree(pool->elements); | |
a96e0c77 | 207 | fail_free_lpfc_mbuf_pool: |
dea3101e | 208 | pci_pool_destroy(phba->lpfc_mbuf_pool); |
2e0fef85 | 209 | phba->lpfc_mbuf_pool = NULL; |
dea3101e | 210 | fail_free_dma_buf_pool: |
895427bd JS |
211 | pci_pool_destroy(phba->lpfc_sg_dma_buf_pool); |
212 | phba->lpfc_sg_dma_buf_pool = NULL; | |
dea3101e JB |
213 | fail: |
214 | return -ENOMEM; | |
215 | } | |
216 | ||
e59058c4 | 217 | /** |
da0436e9 | 218 | * lpfc_mem_free - Frees memory allocated by lpfc_mem_alloc |
e59058c4 JS |
219 | * @phba: HBA to free memory for |
220 | * | |
da0436e9 JS |
221 | * Description: Free the memory allocated by lpfc_mem_alloc routine. This |
222 | * routine is a the counterpart of lpfc_mem_alloc. | |
e59058c4 JS |
223 | * |
224 | * Returns: None | |
225 | **/ | |
dea3101e | 226 | void |
da0436e9 | 227 | lpfc_mem_free(struct lpfc_hba *phba) |
dea3101e | 228 | { |
dea3101e | 229 | int i; |
da0436e9 | 230 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; |
1ba981fd | 231 | struct lpfc_device_data *device_data; |
dea3101e | 232 | |
da0436e9 | 233 | /* Free HBQ pools */ |
ed957684 | 234 | lpfc_sli_hbqbuf_free_all(phba); |
8568a4d2 JS |
235 | if (phba->lpfc_drb_pool) |
236 | pci_pool_destroy(phba->lpfc_drb_pool); | |
da0436e9 | 237 | phba->lpfc_drb_pool = NULL; |
8568a4d2 JS |
238 | if (phba->lpfc_hrb_pool) |
239 | pci_pool_destroy(phba->lpfc_hrb_pool); | |
da0436e9 | 240 | phba->lpfc_hrb_pool = NULL; |
895427bd JS |
241 | if (phba->txrdy_payload_pool) |
242 | pci_pool_destroy(phba->txrdy_payload_pool); | |
243 | phba->txrdy_payload_pool = NULL; | |
da0436e9 | 244 | |
8568a4d2 JS |
245 | if (phba->lpfc_hbq_pool) |
246 | pci_pool_destroy(phba->lpfc_hbq_pool); | |
247 | phba->lpfc_hbq_pool = NULL; | |
d65c8fff MP |
248 | |
249 | if (phba->rrq_pool) | |
250 | mempool_destroy(phba->rrq_pool); | |
21a688cd JS |
251 | phba->rrq_pool = NULL; |
252 | ||
da0436e9 JS |
253 | /* Free NLP memory pool */ |
254 | mempool_destroy(phba->nlp_mem_pool); | |
255 | phba->nlp_mem_pool = NULL; | |
d65c8fff | 256 | if (phba->sli_rev == LPFC_SLI_REV4 && phba->active_rrq_pool) { |
cff261f6 JS |
257 | mempool_destroy(phba->active_rrq_pool); |
258 | phba->active_rrq_pool = NULL; | |
259 | } | |
da0436e9 JS |
260 | |
261 | /* Free mbox memory pool */ | |
262 | mempool_destroy(phba->mbox_mem_pool); | |
263 | phba->mbox_mem_pool = NULL; | |
264 | ||
265 | /* Free MBUF memory pool */ | |
266 | for (i = 0; i < pool->current_count; i++) | |
267 | pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, | |
268 | pool->elements[i].phys); | |
269 | kfree(pool->elements); | |
270 | ||
271 | pci_pool_destroy(phba->lpfc_mbuf_pool); | |
272 | phba->lpfc_mbuf_pool = NULL; | |
ed957684 | 273 | |
da0436e9 | 274 | /* Free DMA buffer memory pool */ |
895427bd JS |
275 | pci_pool_destroy(phba->lpfc_sg_dma_buf_pool); |
276 | phba->lpfc_sg_dma_buf_pool = NULL; | |
da0436e9 | 277 | |
1ba981fd JS |
278 | /* Free Device Data memory pool */ |
279 | if (phba->device_data_mem_pool) { | |
280 | /* Ensure all objects have been returned to the pool */ | |
281 | while (!list_empty(&phba->luns)) { | |
282 | device_data = list_first_entry(&phba->luns, | |
283 | struct lpfc_device_data, | |
284 | listentry); | |
285 | list_del(&device_data->listentry); | |
286 | mempool_free(device_data, phba->device_data_mem_pool); | |
287 | } | |
288 | mempool_destroy(phba->device_data_mem_pool); | |
289 | } | |
290 | phba->device_data_mem_pool = NULL; | |
da0436e9 JS |
291 | return; |
292 | } | |
293 | ||
294 | /** | |
295 | * lpfc_mem_free_all - Frees all PCI and driver memory | |
296 | * @phba: HBA to free memory for | |
297 | * | |
298 | * Description: Free memory from PCI and driver memory pools and also those | |
895427bd | 299 | * used : lpfc_sg_dma_buf_pool, lpfc_mbuf_pool, lpfc_hrb_pool. Frees |
da0436e9 JS |
300 | * kmalloc-backed mempools for LPFC_MBOXQ_t and lpfc_nodelist. Also frees |
301 | * the VPI bitmask. | |
302 | * | |
303 | * Returns: None | |
304 | **/ | |
305 | void | |
306 | lpfc_mem_free_all(struct lpfc_hba *phba) | |
307 | { | |
308 | struct lpfc_sli *psli = &phba->sli; | |
309 | LPFC_MBOXQ_t *mbox, *next_mbox; | |
310 | struct lpfc_dmabuf *mp; | |
311 | ||
312 | /* Free memory used in mailbox queue back to mailbox memory pool */ | |
dea3101e JB |
313 | list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) { |
314 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
315 | if (mp) { | |
316 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
317 | kfree(mp); | |
318 | } | |
319 | list_del(&mbox->list); | |
320 | mempool_free(mbox, phba->mbox_mem_pool); | |
321 | } | |
da0436e9 | 322 | /* Free memory used in mailbox cmpl list back to mailbox memory pool */ |
92d7f7b0 JS |
323 | list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) { |
324 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
325 | if (mp) { | |
326 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
327 | kfree(mp); | |
328 | } | |
329 | list_del(&mbox->list); | |
330 | mempool_free(mbox, phba->mbox_mem_pool); | |
331 | } | |
da0436e9 JS |
332 | /* Free the active mailbox command back to the mailbox memory pool */ |
333 | spin_lock_irq(&phba->hbalock); | |
dea3101e | 334 | psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
da0436e9 | 335 | spin_unlock_irq(&phba->hbalock); |
dea3101e JB |
336 | if (psli->mbox_active) { |
337 | mbox = psli->mbox_active; | |
338 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
339 | if (mp) { | |
340 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
341 | kfree(mp); | |
342 | } | |
343 | mempool_free(mbox, phba->mbox_mem_pool); | |
344 | psli->mbox_active = NULL; | |
345 | } | |
346 | ||
da0436e9 JS |
347 | /* Free and destroy all the allocated memory pools */ |
348 | lpfc_mem_free(phba); | |
2e0fef85 | 349 | |
e59058c4 | 350 | /* Free the iocb lookup array */ |
9f49d3b0 JS |
351 | kfree(psli->iocbq_lookup); |
352 | psli->iocbq_lookup = NULL; | |
da0436e9 JS |
353 | |
354 | return; | |
dea3101e JB |
355 | } |
356 | ||
e59058c4 | 357 | /** |
3621a710 | 358 | * lpfc_mbuf_alloc - Allocate an mbuf from the lpfc_mbuf_pool PCI pool |
e59058c4 JS |
359 | * @phba: HBA which owns the pool to allocate from |
360 | * @mem_flags: indicates if this is a priority (MEM_PRI) allocation | |
361 | * @handle: used to return the DMA-mapped address of the mbuf | |
362 | * | |
363 | * Description: Allocates a DMA-mapped buffer from the lpfc_mbuf_pool PCI pool. | |
364 | * Allocates from generic pci_pool_alloc function first and if that fails and | |
365 | * mem_flags has MEM_PRI set (the only defined flag), returns an mbuf from the | |
366 | * HBA's pool. | |
367 | * | |
368 | * Notes: Not interrupt-safe. Must be called with no locks held. Takes | |
369 | * phba->hbalock. | |
370 | * | |
371 | * Returns: | |
372 | * pointer to the allocated mbuf on success | |
373 | * NULL on failure | |
374 | **/ | |
dea3101e JB |
375 | void * |
376 | lpfc_mbuf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) | |
377 | { | |
378 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
2e0fef85 | 379 | unsigned long iflags; |
dea3101e JB |
380 | void *ret; |
381 | ||
382 | ret = pci_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle); | |
383 | ||
2e0fef85 | 384 | spin_lock_irqsave(&phba->hbalock, iflags); |
92d7f7b0 | 385 | if (!ret && (mem_flags & MEM_PRI) && pool->current_count) { |
dea3101e JB |
386 | pool->current_count--; |
387 | ret = pool->elements[pool->current_count].virt; | |
388 | *handle = pool->elements[pool->current_count].phys; | |
389 | } | |
2e0fef85 | 390 | spin_unlock_irqrestore(&phba->hbalock, iflags); |
dea3101e JB |
391 | return ret; |
392 | } | |
393 | ||
e59058c4 | 394 | /** |
3621a710 | 395 | * __lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (locked) |
e59058c4 JS |
396 | * @phba: HBA which owns the pool to return to |
397 | * @virt: mbuf to free | |
398 | * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed | |
399 | * | |
400 | * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if | |
401 | * it is below its max_count, frees the mbuf otherwise. | |
402 | * | |
403 | * Notes: Must be called with phba->hbalock held to synchronize access to | |
404 | * lpfc_mbuf_safety_pool. | |
405 | * | |
406 | * Returns: None | |
407 | **/ | |
dea3101e | 408 | void |
2e0fef85 | 409 | __lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) |
dea3101e JB |
410 | { |
411 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
412 | ||
413 | if (pool->current_count < pool->max_count) { | |
414 | pool->elements[pool->current_count].virt = virt; | |
415 | pool->elements[pool->current_count].phys = dma; | |
416 | pool->current_count++; | |
417 | } else { | |
418 | pci_pool_free(phba->lpfc_mbuf_pool, virt, dma); | |
419 | } | |
420 | return; | |
421 | } | |
2e0fef85 | 422 | |
e59058c4 | 423 | /** |
3621a710 | 424 | * lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (unlocked) |
e59058c4 JS |
425 | * @phba: HBA which owns the pool to return to |
426 | * @virt: mbuf to free | |
427 | * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed | |
428 | * | |
429 | * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if | |
430 | * it is below its max_count, frees the mbuf otherwise. | |
431 | * | |
432 | * Notes: Takes phba->hbalock. Can be called with or without other locks held. | |
433 | * | |
434 | * Returns: None | |
435 | **/ | |
2e0fef85 JS |
436 | void |
437 | lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) | |
438 | { | |
439 | unsigned long iflags; | |
440 | ||
441 | spin_lock_irqsave(&phba->hbalock, iflags); | |
442 | __lpfc_mbuf_free(phba, virt, dma); | |
443 | spin_unlock_irqrestore(&phba->hbalock, iflags); | |
444 | return; | |
445 | } | |
ed957684 | 446 | |
f358dd0c JS |
447 | /** |
448 | * lpfc_nvmet_buf_alloc - Allocate an nvmet_buf from the | |
449 | * lpfc_sg_dma_buf_pool PCI pool | |
450 | * @phba: HBA which owns the pool to allocate from | |
451 | * @mem_flags: indicates if this is a priority (MEM_PRI) allocation | |
452 | * @handle: used to return the DMA-mapped address of the nvmet_buf | |
453 | * | |
454 | * Description: Allocates a DMA-mapped buffer from the lpfc_sg_dma_buf_pool | |
455 | * PCI pool. Allocates from generic pci_pool_alloc function. | |
456 | * | |
457 | * Returns: | |
458 | * pointer to the allocated nvmet_buf on success | |
459 | * NULL on failure | |
460 | **/ | |
461 | void * | |
462 | lpfc_nvmet_buf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) | |
463 | { | |
464 | void *ret; | |
465 | ||
466 | ret = pci_pool_alloc(phba->lpfc_sg_dma_buf_pool, GFP_KERNEL, handle); | |
467 | return ret; | |
468 | } | |
469 | ||
470 | /** | |
471 | * lpfc_nvmet_buf_free - Free an nvmet_buf from the lpfc_sg_dma_buf_pool | |
472 | * PCI pool | |
473 | * @phba: HBA which owns the pool to return to | |
474 | * @virt: nvmet_buf to free | |
475 | * @dma: the DMA-mapped address of the lpfc_sg_dma_buf_pool to be freed | |
476 | * | |
477 | * Returns: None | |
478 | **/ | |
479 | void | |
480 | lpfc_nvmet_buf_free(struct lpfc_hba *phba, void *virt, dma_addr_t dma) | |
481 | { | |
482 | pci_pool_free(phba->lpfc_sg_dma_buf_pool, virt, dma); | |
483 | } | |
484 | ||
e59058c4 | 485 | /** |
3621a710 | 486 | * lpfc_els_hbq_alloc - Allocate an HBQ buffer |
e59058c4 JS |
487 | * @phba: HBA to allocate HBQ buffer for |
488 | * | |
da0436e9 | 489 | * Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hrb_pool PCI |
e59058c4 JS |
490 | * pool along a non-DMA-mapped container for it. |
491 | * | |
492 | * Notes: Not interrupt-safe. Must be called with no locks held. | |
493 | * | |
494 | * Returns: | |
495 | * pointer to HBQ on success | |
496 | * NULL on failure | |
497 | **/ | |
51ef4c26 JS |
498 | struct hbq_dmabuf * |
499 | lpfc_els_hbq_alloc(struct lpfc_hba *phba) | |
ed957684 | 500 | { |
51ef4c26 JS |
501 | struct hbq_dmabuf *hbqbp; |
502 | ||
2e90f4b5 | 503 | hbqbp = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL); |
51ef4c26 JS |
504 | if (!hbqbp) |
505 | return NULL; | |
506 | ||
8568a4d2 | 507 | hbqbp->dbuf.virt = pci_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL, |
51ef4c26 JS |
508 | &hbqbp->dbuf.phys); |
509 | if (!hbqbp->dbuf.virt) { | |
510 | kfree(hbqbp); | |
511 | return NULL; | |
512 | } | |
895427bd | 513 | hbqbp->total_size = LPFC_BPL_SIZE; |
51ef4c26 | 514 | return hbqbp; |
ed957684 JS |
515 | } |
516 | ||
e59058c4 | 517 | /** |
da0436e9 | 518 | * lpfc_els_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc |
e59058c4 JS |
519 | * @phba: HBA buffer was allocated for |
520 | * @hbqbp: HBQ container returned by lpfc_els_hbq_alloc | |
521 | * | |
522 | * Description: Frees both the container and the DMA-mapped buffer returned by | |
523 | * lpfc_els_hbq_alloc. | |
524 | * | |
525 | * Notes: Can be called with or without locks held. | |
526 | * | |
527 | * Returns: None | |
528 | **/ | |
ed957684 | 529 | void |
51ef4c26 | 530 | lpfc_els_hbq_free(struct lpfc_hba *phba, struct hbq_dmabuf *hbqbp) |
ed957684 | 531 | { |
8568a4d2 | 532 | pci_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys); |
51ef4c26 | 533 | kfree(hbqbp); |
ed957684 JS |
534 | return; |
535 | } | |
536 | ||
da0436e9 JS |
537 | /** |
538 | * lpfc_sli4_rb_alloc - Allocate an SLI4 Receive buffer | |
539 | * @phba: HBA to allocate a receive buffer for | |
540 | * | |
541 | * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI | |
542 | * pool along a non-DMA-mapped container for it. | |
543 | * | |
544 | * Notes: Not interrupt-safe. Must be called with no locks held. | |
545 | * | |
546 | * Returns: | |
547 | * pointer to HBQ on success | |
548 | * NULL on failure | |
549 | **/ | |
550 | struct hbq_dmabuf * | |
551 | lpfc_sli4_rb_alloc(struct lpfc_hba *phba) | |
552 | { | |
553 | struct hbq_dmabuf *dma_buf; | |
554 | ||
2e90f4b5 | 555 | dma_buf = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL); |
da0436e9 JS |
556 | if (!dma_buf) |
557 | return NULL; | |
558 | ||
559 | dma_buf->hbuf.virt = pci_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL, | |
560 | &dma_buf->hbuf.phys); | |
561 | if (!dma_buf->hbuf.virt) { | |
562 | kfree(dma_buf); | |
563 | return NULL; | |
564 | } | |
565 | dma_buf->dbuf.virt = pci_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL, | |
566 | &dma_buf->dbuf.phys); | |
567 | if (!dma_buf->dbuf.virt) { | |
568 | pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, | |
569 | dma_buf->hbuf.phys); | |
570 | kfree(dma_buf); | |
571 | return NULL; | |
572 | } | |
895427bd | 573 | dma_buf->total_size = LPFC_DATA_BUF_SIZE; |
da0436e9 JS |
574 | return dma_buf; |
575 | } | |
576 | ||
577 | /** | |
578 | * lpfc_sli4_rb_free - Frees a receive buffer | |
579 | * @phba: HBA buffer was allocated for | |
580 | * @dmab: DMA Buffer container returned by lpfc_sli4_hbq_alloc | |
581 | * | |
582 | * Description: Frees both the container and the DMA-mapped buffers returned by | |
583 | * lpfc_sli4_rb_alloc. | |
584 | * | |
585 | * Notes: Can be called with or without locks held. | |
586 | * | |
587 | * Returns: None | |
588 | **/ | |
589 | void | |
590 | lpfc_sli4_rb_free(struct lpfc_hba *phba, struct hbq_dmabuf *dmab) | |
591 | { | |
592 | pci_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys); | |
593 | pci_pool_free(phba->lpfc_drb_pool, dmab->dbuf.virt, dmab->dbuf.phys); | |
594 | kfree(dmab); | |
da0436e9 JS |
595 | } |
596 | ||
f358dd0c JS |
597 | /** |
598 | * lpfc_sli4_nvmet_alloc - Allocate an SLI4 Receive buffer | |
599 | * @phba: HBA to allocate a receive buffer for | |
600 | * | |
601 | * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI | |
602 | * pool along a non-DMA-mapped container for it. | |
603 | * | |
604 | * Notes: Not interrupt-safe. Must be called with no locks held. | |
605 | * | |
606 | * Returns: | |
607 | * pointer to HBQ on success | |
608 | * NULL on failure | |
609 | **/ | |
610 | struct rqb_dmabuf * | |
611 | lpfc_sli4_nvmet_alloc(struct lpfc_hba *phba) | |
612 | { | |
613 | struct rqb_dmabuf *dma_buf; | |
614 | struct lpfc_iocbq *nvmewqe; | |
615 | union lpfc_wqe128 *wqe; | |
616 | ||
617 | dma_buf = kzalloc(sizeof(struct rqb_dmabuf), GFP_KERNEL); | |
618 | if (!dma_buf) | |
619 | return NULL; | |
620 | ||
621 | dma_buf->hbuf.virt = pci_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL, | |
622 | &dma_buf->hbuf.phys); | |
623 | if (!dma_buf->hbuf.virt) { | |
624 | kfree(dma_buf); | |
625 | return NULL; | |
626 | } | |
627 | dma_buf->dbuf.virt = pci_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL, | |
628 | &dma_buf->dbuf.phys); | |
629 | if (!dma_buf->dbuf.virt) { | |
630 | pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, | |
631 | dma_buf->hbuf.phys); | |
632 | kfree(dma_buf); | |
633 | return NULL; | |
634 | } | |
635 | dma_buf->total_size = LPFC_DATA_BUF_SIZE; | |
636 | ||
637 | dma_buf->context = kzalloc(sizeof(struct lpfc_nvmet_rcv_ctx), | |
638 | GFP_KERNEL); | |
639 | if (!dma_buf->context) { | |
640 | pci_pool_free(phba->lpfc_drb_pool, dma_buf->dbuf.virt, | |
641 | dma_buf->dbuf.phys); | |
642 | pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, | |
643 | dma_buf->hbuf.phys); | |
644 | kfree(dma_buf); | |
645 | return NULL; | |
646 | } | |
647 | ||
648 | dma_buf->iocbq = lpfc_sli_get_iocbq(phba); | |
649 | dma_buf->iocbq->iocb_flag = LPFC_IO_NVMET; | |
650 | if (!dma_buf->iocbq) { | |
651 | kfree(dma_buf->context); | |
652 | pci_pool_free(phba->lpfc_drb_pool, dma_buf->dbuf.virt, | |
653 | dma_buf->dbuf.phys); | |
654 | pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, | |
655 | dma_buf->hbuf.phys); | |
656 | kfree(dma_buf); | |
657 | lpfc_printf_log(phba, KERN_ERR, LOG_NVME, | |
658 | "2621 Ran out of nvmet iocb/WQEs\n"); | |
659 | return NULL; | |
660 | } | |
661 | nvmewqe = dma_buf->iocbq; | |
662 | wqe = (union lpfc_wqe128 *)&nvmewqe->wqe; | |
663 | /* Initialize WQE */ | |
664 | memset(wqe, 0, sizeof(union lpfc_wqe)); | |
665 | /* Word 7 */ | |
666 | bf_set(wqe_ct, &wqe->generic.wqe_com, SLI4_CT_RPI); | |
667 | bf_set(wqe_class, &wqe->generic.wqe_com, CLASS3); | |
668 | bf_set(wqe_pu, &wqe->generic.wqe_com, 1); | |
669 | /* Word 10 */ | |
670 | bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1); | |
671 | bf_set(wqe_ebde_cnt, &wqe->generic.wqe_com, 0); | |
672 | bf_set(wqe_qosd, &wqe->generic.wqe_com, 0); | |
673 | ||
674 | dma_buf->iocbq->context1 = NULL; | |
675 | spin_lock(&phba->sli4_hba.sgl_list_lock); | |
676 | dma_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, dma_buf->iocbq); | |
677 | spin_unlock(&phba->sli4_hba.sgl_list_lock); | |
678 | if (!dma_buf->sglq) { | |
679 | lpfc_sli_release_iocbq(phba, dma_buf->iocbq); | |
680 | kfree(dma_buf->context); | |
681 | pci_pool_free(phba->lpfc_drb_pool, dma_buf->dbuf.virt, | |
682 | dma_buf->dbuf.phys); | |
683 | pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, | |
684 | dma_buf->hbuf.phys); | |
685 | kfree(dma_buf); | |
686 | lpfc_printf_log(phba, KERN_ERR, LOG_NVME, | |
687 | "6132 Ran out of nvmet XRIs\n"); | |
688 | return NULL; | |
689 | } | |
690 | return dma_buf; | |
691 | } | |
692 | ||
693 | /** | |
694 | * lpfc_sli4_nvmet_free - Frees a receive buffer | |
695 | * @phba: HBA buffer was allocated for | |
696 | * @dmab: DMA Buffer container returned by lpfc_sli4_rbq_alloc | |
697 | * | |
698 | * Description: Frees both the container and the DMA-mapped buffers returned by | |
699 | * lpfc_sli4_nvmet_alloc. | |
700 | * | |
701 | * Notes: Can be called with or without locks held. | |
702 | * | |
703 | * Returns: None | |
704 | **/ | |
705 | void | |
706 | lpfc_sli4_nvmet_free(struct lpfc_hba *phba, struct rqb_dmabuf *dmab) | |
707 | { | |
708 | unsigned long flags; | |
709 | ||
710 | __lpfc_clear_active_sglq(phba, dmab->sglq->sli4_lxritag); | |
711 | dmab->sglq->state = SGL_FREED; | |
712 | dmab->sglq->ndlp = NULL; | |
713 | ||
714 | spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, flags); | |
715 | list_add_tail(&dmab->sglq->list, &phba->sli4_hba.lpfc_nvmet_sgl_list); | |
716 | spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, flags); | |
717 | ||
718 | lpfc_sli_release_iocbq(phba, dmab->iocbq); | |
719 | kfree(dmab->context); | |
720 | pci_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys); | |
721 | pci_pool_free(phba->lpfc_drb_pool, dmab->dbuf.virt, dmab->dbuf.phys); | |
722 | kfree(dmab); | |
723 | } | |
724 | ||
e59058c4 | 725 | /** |
3621a710 | 726 | * lpfc_in_buf_free - Free a DMA buffer |
e59058c4 JS |
727 | * @phba: HBA buffer is associated with |
728 | * @mp: Buffer to free | |
729 | * | |
730 | * Description: Frees the given DMA buffer in the appropriate way given if the | |
731 | * HBA is running in SLI3 mode with HBQs enabled. | |
732 | * | |
733 | * Notes: Takes phba->hbalock. Can be called with or without other locks held. | |
734 | * | |
735 | * Returns: None | |
736 | **/ | |
92d7f7b0 JS |
737 | void |
738 | lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp) | |
739 | { | |
740 | struct hbq_dmabuf *hbq_entry; | |
3163f725 | 741 | unsigned long flags; |
92d7f7b0 | 742 | |
7f5f3d0d JS |
743 | if (!mp) |
744 | return; | |
745 | ||
92d7f7b0 | 746 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
895427bd | 747 | hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf); |
3163f725 JS |
748 | /* Check whether HBQ is still in use */ |
749 | spin_lock_irqsave(&phba->hbalock, flags); | |
750 | if (!phba->hbq_in_use) { | |
751 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
752 | return; | |
753 | } | |
3163f725 | 754 | list_del(&hbq_entry->dbuf.list); |
92d7f7b0 | 755 | if (hbq_entry->tag == -1) { |
51ef4c26 JS |
756 | (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) |
757 | (phba, hbq_entry); | |
92d7f7b0 JS |
758 | } else { |
759 | lpfc_sli_free_hbq(phba, hbq_entry); | |
760 | } | |
3163f725 | 761 | spin_unlock_irqrestore(&phba->hbalock, flags); |
92d7f7b0 JS |
762 | } else { |
763 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
764 | kfree(mp); | |
765 | } | |
766 | return; | |
767 | } | |
d613b6a7 JS |
768 | |
769 | /** | |
770 | * lpfc_rq_buf_free - Free a RQ DMA buffer | |
771 | * @phba: HBA buffer is associated with | |
772 | * @mp: Buffer to free | |
773 | * | |
774 | * Description: Frees the given DMA buffer in the appropriate way given by | |
775 | * reposting it to its associated RQ so it can be reused. | |
776 | * | |
777 | * Notes: Takes phba->hbalock. Can be called with or without other locks held. | |
778 | * | |
779 | * Returns: None | |
780 | **/ | |
781 | void | |
782 | lpfc_rq_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp) | |
783 | { | |
784 | struct lpfc_rqb *rqbp; | |
785 | struct lpfc_rqe hrqe; | |
786 | struct lpfc_rqe drqe; | |
787 | struct rqb_dmabuf *rqb_entry; | |
788 | unsigned long flags; | |
789 | int rc; | |
790 | ||
791 | if (!mp) | |
792 | return; | |
793 | ||
794 | rqb_entry = container_of(mp, struct rqb_dmabuf, hbuf); | |
795 | rqbp = rqb_entry->hrq->rqbp; | |
796 | ||
797 | spin_lock_irqsave(&phba->hbalock, flags); | |
798 | list_del(&rqb_entry->hbuf.list); | |
799 | hrqe.address_lo = putPaddrLow(rqb_entry->hbuf.phys); | |
800 | hrqe.address_hi = putPaddrHigh(rqb_entry->hbuf.phys); | |
801 | drqe.address_lo = putPaddrLow(rqb_entry->dbuf.phys); | |
802 | drqe.address_hi = putPaddrHigh(rqb_entry->dbuf.phys); | |
803 | rc = lpfc_sli4_rq_put(rqb_entry->hrq, rqb_entry->drq, &hrqe, &drqe); | |
804 | if (rc < 0) { | |
805 | (rqbp->rqb_free_buffer)(phba, rqb_entry); | |
806 | } else { | |
807 | list_add_tail(&rqb_entry->hbuf.list, &rqbp->rqb_buffer_list); | |
808 | rqbp->buffer_count++; | |
809 | } | |
810 | ||
811 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
812 | } |