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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 | 99 | phba->lpfc_sg_dma_buf_pool = |
771db5c0 RP |
100 | dma_pool_create("lpfc_sg_dma_buf_pool", |
101 | &phba->pcidev->dev, | |
895427bd JS |
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 | 108 | phba->lpfc_sg_dma_buf_pool = |
771db5c0 RP |
109 | dma_pool_create("lpfc_sg_dma_buf_pool", |
110 | &phba->pcidev->dev, phba->cfg_sg_dma_buf_size, | |
895427bd | 111 | align, 0); |
96f7077f | 112 | |
895427bd JS |
113 | if (!phba->lpfc_sg_dma_buf_pool) |
114 | goto fail; | |
115 | } | |
dea3101e | 116 | |
771db5c0 | 117 | phba->lpfc_mbuf_pool = dma_pool_create("lpfc_mbuf_pool", &phba->pcidev->dev, |
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++) { | |
771db5c0 | 131 | pool->elements[i].virt = dma_pool_alloc(phba->lpfc_mbuf_pool, |
dea3101e JB |
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; | |
771db5c0 RP |
155 | phba->lpfc_hrb_pool = dma_pool_create("lpfc_hrb_pool", |
156 | &phba->pcidev->dev, | |
da0436e9 | 157 | LPFC_HDR_BUF_SIZE, align, 0); |
8568a4d2 | 158 | if (!phba->lpfc_hrb_pool) |
19ca7609 | 159 | goto fail_free_rrq_mem_pool; |
8568a4d2 | 160 | |
771db5c0 RP |
161 | phba->lpfc_drb_pool = dma_pool_create("lpfc_drb_pool", |
162 | &phba->pcidev->dev, | |
da0436e9 | 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 { | |
771db5c0 RP |
168 | phba->lpfc_hbq_pool = dma_pool_create("lpfc_hbq_pool", |
169 | &phba->pcidev->dev, LPFC_BPL_SIZE, align, 0); | |
8568a4d2 JS |
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 | 187 | fail_free_drb_pool: |
771db5c0 | 188 | dma_pool_destroy(phba->lpfc_drb_pool); |
895427bd | 189 | phba->lpfc_drb_pool = NULL; |
8568a4d2 | 190 | fail_free_hrb_pool: |
771db5c0 | 191 | dma_pool_destroy(phba->lpfc_hrb_pool); |
da0436e9 | 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--) |
771db5c0 | 204 | dma_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, |
dea3101e JB |
205 | pool->elements[i].phys); |
206 | kfree(pool->elements); | |
a96e0c77 | 207 | fail_free_lpfc_mbuf_pool: |
771db5c0 | 208 | dma_pool_destroy(phba->lpfc_mbuf_pool); |
2e0fef85 | 209 | phba->lpfc_mbuf_pool = NULL; |
dea3101e | 210 | fail_free_dma_buf_pool: |
771db5c0 | 211 | dma_pool_destroy(phba->lpfc_sg_dma_buf_pool); |
895427bd | 212 | phba->lpfc_sg_dma_buf_pool = NULL; |
dea3101e JB |
213 | fail: |
214 | return -ENOMEM; | |
215 | } | |
216 | ||
3c603be9 JS |
217 | int |
218 | lpfc_nvmet_mem_alloc(struct lpfc_hba *phba) | |
219 | { | |
220 | phba->lpfc_nvmet_drb_pool = | |
771db5c0 RP |
221 | dma_pool_create("lpfc_nvmet_drb_pool", |
222 | &phba->pcidev->dev, LPFC_NVMET_DATA_BUF_SIZE, | |
3c603be9 JS |
223 | SGL_ALIGN_SZ, 0); |
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"); | |
227 | return -ENOMEM; | |
228 | } | |
229 | return 0; | |
230 | } | |
231 | ||
e59058c4 | 232 | /** |
da0436e9 | 233 | * lpfc_mem_free - Frees memory allocated by lpfc_mem_alloc |
e59058c4 JS |
234 | * @phba: HBA to free memory for |
235 | * | |
da0436e9 JS |
236 | * Description: Free the memory allocated by lpfc_mem_alloc routine. This |
237 | * routine is a the counterpart of lpfc_mem_alloc. | |
e59058c4 JS |
238 | * |
239 | * Returns: None | |
240 | **/ | |
dea3101e | 241 | void |
da0436e9 | 242 | lpfc_mem_free(struct lpfc_hba *phba) |
dea3101e | 243 | { |
dea3101e | 244 | int i; |
da0436e9 | 245 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; |
1ba981fd | 246 | struct lpfc_device_data *device_data; |
dea3101e | 247 | |
da0436e9 | 248 | /* Free HBQ pools */ |
ed957684 | 249 | lpfc_sli_hbqbuf_free_all(phba); |
3c603be9 | 250 | if (phba->lpfc_nvmet_drb_pool) |
771db5c0 | 251 | dma_pool_destroy(phba->lpfc_nvmet_drb_pool); |
3c603be9 | 252 | phba->lpfc_nvmet_drb_pool = NULL; |
8568a4d2 | 253 | if (phba->lpfc_drb_pool) |
771db5c0 | 254 | dma_pool_destroy(phba->lpfc_drb_pool); |
da0436e9 | 255 | phba->lpfc_drb_pool = NULL; |
8568a4d2 | 256 | if (phba->lpfc_hrb_pool) |
771db5c0 | 257 | dma_pool_destroy(phba->lpfc_hrb_pool); |
da0436e9 | 258 | phba->lpfc_hrb_pool = NULL; |
895427bd | 259 | if (phba->txrdy_payload_pool) |
771db5c0 | 260 | dma_pool_destroy(phba->txrdy_payload_pool); |
895427bd | 261 | phba->txrdy_payload_pool = NULL; |
da0436e9 | 262 | |
8568a4d2 | 263 | if (phba->lpfc_hbq_pool) |
771db5c0 | 264 | dma_pool_destroy(phba->lpfc_hbq_pool); |
8568a4d2 | 265 | phba->lpfc_hbq_pool = NULL; |
d65c8fff MP |
266 | |
267 | if (phba->rrq_pool) | |
268 | mempool_destroy(phba->rrq_pool); | |
21a688cd JS |
269 | phba->rrq_pool = NULL; |
270 | ||
da0436e9 JS |
271 | /* Free NLP memory pool */ |
272 | mempool_destroy(phba->nlp_mem_pool); | |
273 | phba->nlp_mem_pool = NULL; | |
d65c8fff | 274 | if (phba->sli_rev == LPFC_SLI_REV4 && phba->active_rrq_pool) { |
cff261f6 JS |
275 | mempool_destroy(phba->active_rrq_pool); |
276 | phba->active_rrq_pool = NULL; | |
277 | } | |
da0436e9 JS |
278 | |
279 | /* Free mbox memory pool */ | |
280 | mempool_destroy(phba->mbox_mem_pool); | |
281 | phba->mbox_mem_pool = NULL; | |
282 | ||
283 | /* Free MBUF memory pool */ | |
284 | for (i = 0; i < pool->current_count; i++) | |
771db5c0 | 285 | dma_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, |
da0436e9 JS |
286 | pool->elements[i].phys); |
287 | kfree(pool->elements); | |
288 | ||
771db5c0 | 289 | dma_pool_destroy(phba->lpfc_mbuf_pool); |
da0436e9 | 290 | phba->lpfc_mbuf_pool = NULL; |
ed957684 | 291 | |
da0436e9 | 292 | /* Free DMA buffer memory pool */ |
771db5c0 | 293 | dma_pool_destroy(phba->lpfc_sg_dma_buf_pool); |
895427bd | 294 | phba->lpfc_sg_dma_buf_pool = NULL; |
da0436e9 | 295 | |
1ba981fd JS |
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, | |
302 | listentry); | |
303 | list_del(&device_data->listentry); | |
304 | mempool_free(device_data, phba->device_data_mem_pool); | |
305 | } | |
306 | mempool_destroy(phba->device_data_mem_pool); | |
307 | } | |
308 | phba->device_data_mem_pool = NULL; | |
da0436e9 JS |
309 | return; |
310 | } | |
311 | ||
312 | /** | |
313 | * lpfc_mem_free_all - Frees all PCI and driver memory | |
314 | * @phba: HBA to free memory for | |
315 | * | |
316 | * Description: Free memory from PCI and driver memory pools and also those | |
895427bd | 317 | * used : lpfc_sg_dma_buf_pool, lpfc_mbuf_pool, lpfc_hrb_pool. Frees |
da0436e9 JS |
318 | * kmalloc-backed mempools for LPFC_MBOXQ_t and lpfc_nodelist. Also frees |
319 | * the VPI bitmask. | |
320 | * | |
321 | * Returns: None | |
322 | **/ | |
323 | void | |
324 | lpfc_mem_free_all(struct lpfc_hba *phba) | |
325 | { | |
326 | struct lpfc_sli *psli = &phba->sli; | |
327 | LPFC_MBOXQ_t *mbox, *next_mbox; | |
328 | struct lpfc_dmabuf *mp; | |
329 | ||
330 | /* Free memory used in mailbox queue back to mailbox memory pool */ | |
dea3101e JB |
331 | list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) { |
332 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
333 | if (mp) { | |
334 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
335 | kfree(mp); | |
336 | } | |
337 | list_del(&mbox->list); | |
338 | mempool_free(mbox, phba->mbox_mem_pool); | |
339 | } | |
da0436e9 | 340 | /* Free memory used in mailbox cmpl list back to mailbox memory pool */ |
92d7f7b0 JS |
341 | list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) { |
342 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
343 | if (mp) { | |
344 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
345 | kfree(mp); | |
346 | } | |
347 | list_del(&mbox->list); | |
348 | mempool_free(mbox, phba->mbox_mem_pool); | |
349 | } | |
da0436e9 JS |
350 | /* Free the active mailbox command back to the mailbox memory pool */ |
351 | spin_lock_irq(&phba->hbalock); | |
dea3101e | 352 | psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
da0436e9 | 353 | spin_unlock_irq(&phba->hbalock); |
dea3101e JB |
354 | if (psli->mbox_active) { |
355 | mbox = psli->mbox_active; | |
356 | mp = (struct lpfc_dmabuf *) (mbox->context1); | |
357 | if (mp) { | |
358 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
359 | kfree(mp); | |
360 | } | |
361 | mempool_free(mbox, phba->mbox_mem_pool); | |
362 | psli->mbox_active = NULL; | |
363 | } | |
364 | ||
da0436e9 JS |
365 | /* Free and destroy all the allocated memory pools */ |
366 | lpfc_mem_free(phba); | |
2e0fef85 | 367 | |
e59058c4 | 368 | /* Free the iocb lookup array */ |
9f49d3b0 JS |
369 | kfree(psli->iocbq_lookup); |
370 | psli->iocbq_lookup = NULL; | |
da0436e9 JS |
371 | |
372 | return; | |
dea3101e JB |
373 | } |
374 | ||
e59058c4 | 375 | /** |
3621a710 | 376 | * lpfc_mbuf_alloc - Allocate an mbuf from the lpfc_mbuf_pool PCI pool |
e59058c4 JS |
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 | |
380 | * | |
381 | * Description: Allocates a DMA-mapped buffer from the lpfc_mbuf_pool PCI pool. | |
771db5c0 | 382 | * Allocates from generic dma_pool_alloc function first and if that fails and |
e59058c4 JS |
383 | * mem_flags has MEM_PRI set (the only defined flag), returns an mbuf from the |
384 | * HBA's pool. | |
385 | * | |
386 | * Notes: Not interrupt-safe. Must be called with no locks held. Takes | |
387 | * phba->hbalock. | |
388 | * | |
389 | * Returns: | |
390 | * pointer to the allocated mbuf on success | |
391 | * NULL on failure | |
392 | **/ | |
dea3101e JB |
393 | void * |
394 | lpfc_mbuf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) | |
395 | { | |
396 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
2e0fef85 | 397 | unsigned long iflags; |
dea3101e JB |
398 | void *ret; |
399 | ||
771db5c0 | 400 | ret = dma_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle); |
dea3101e | 401 | |
2e0fef85 | 402 | spin_lock_irqsave(&phba->hbalock, iflags); |
92d7f7b0 | 403 | if (!ret && (mem_flags & MEM_PRI) && pool->current_count) { |
dea3101e JB |
404 | pool->current_count--; |
405 | ret = pool->elements[pool->current_count].virt; | |
406 | *handle = pool->elements[pool->current_count].phys; | |
407 | } | |
2e0fef85 | 408 | spin_unlock_irqrestore(&phba->hbalock, iflags); |
dea3101e JB |
409 | return ret; |
410 | } | |
411 | ||
e59058c4 | 412 | /** |
3621a710 | 413 | * __lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (locked) |
e59058c4 JS |
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 | |
417 | * | |
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. | |
420 | * | |
421 | * Notes: Must be called with phba->hbalock held to synchronize access to | |
422 | * lpfc_mbuf_safety_pool. | |
423 | * | |
424 | * Returns: None | |
425 | **/ | |
dea3101e | 426 | void |
2e0fef85 | 427 | __lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) |
dea3101e JB |
428 | { |
429 | struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; | |
430 | ||
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++; | |
435 | } else { | |
771db5c0 | 436 | dma_pool_free(phba->lpfc_mbuf_pool, virt, dma); |
dea3101e JB |
437 | } |
438 | return; | |
439 | } | |
2e0fef85 | 440 | |
e59058c4 | 441 | /** |
3621a710 | 442 | * lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (unlocked) |
e59058c4 JS |
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 | |
446 | * | |
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. | |
449 | * | |
450 | * Notes: Takes phba->hbalock. Can be called with or without other locks held. | |
451 | * | |
452 | * Returns: None | |
453 | **/ | |
2e0fef85 JS |
454 | void |
455 | lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) | |
456 | { | |
457 | unsigned long iflags; | |
458 | ||
459 | spin_lock_irqsave(&phba->hbalock, iflags); | |
460 | __lpfc_mbuf_free(phba, virt, dma); | |
461 | spin_unlock_irqrestore(&phba->hbalock, iflags); | |
462 | return; | |
463 | } | |
ed957684 | 464 | |
f358dd0c JS |
465 | /** |
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 | |
471 | * | |
472 | * Description: Allocates a DMA-mapped buffer from the lpfc_sg_dma_buf_pool | |
771db5c0 | 473 | * PCI pool. Allocates from generic dma_pool_alloc function. |
f358dd0c JS |
474 | * |
475 | * Returns: | |
476 | * pointer to the allocated nvmet_buf on success | |
477 | * NULL on failure | |
478 | **/ | |
479 | void * | |
480 | lpfc_nvmet_buf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) | |
481 | { | |
482 | void *ret; | |
483 | ||
771db5c0 | 484 | ret = dma_pool_alloc(phba->lpfc_sg_dma_buf_pool, GFP_KERNEL, handle); |
f358dd0c JS |
485 | return ret; |
486 | } | |
487 | ||
488 | /** | |
489 | * lpfc_nvmet_buf_free - Free an nvmet_buf from the lpfc_sg_dma_buf_pool | |
490 | * PCI 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 | |
494 | * | |
495 | * Returns: None | |
496 | **/ | |
497 | void | |
498 | lpfc_nvmet_buf_free(struct lpfc_hba *phba, void *virt, dma_addr_t dma) | |
499 | { | |
771db5c0 | 500 | dma_pool_free(phba->lpfc_sg_dma_buf_pool, virt, dma); |
f358dd0c JS |
501 | } |
502 | ||
e59058c4 | 503 | /** |
3621a710 | 504 | * lpfc_els_hbq_alloc - Allocate an HBQ buffer |
e59058c4 JS |
505 | * @phba: HBA to allocate HBQ buffer for |
506 | * | |
da0436e9 | 507 | * Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hrb_pool PCI |
e59058c4 JS |
508 | * pool along a non-DMA-mapped container for it. |
509 | * | |
510 | * Notes: Not interrupt-safe. Must be called with no locks held. | |
511 | * | |
512 | * Returns: | |
513 | * pointer to HBQ on success | |
514 | * NULL on failure | |
515 | **/ | |
51ef4c26 JS |
516 | struct hbq_dmabuf * |
517 | lpfc_els_hbq_alloc(struct lpfc_hba *phba) | |
ed957684 | 518 | { |
51ef4c26 JS |
519 | struct hbq_dmabuf *hbqbp; |
520 | ||
2e90f4b5 | 521 | hbqbp = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL); |
51ef4c26 JS |
522 | if (!hbqbp) |
523 | return NULL; | |
524 | ||
771db5c0 | 525 | hbqbp->dbuf.virt = dma_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL, |
51ef4c26 JS |
526 | &hbqbp->dbuf.phys); |
527 | if (!hbqbp->dbuf.virt) { | |
528 | kfree(hbqbp); | |
529 | return NULL; | |
530 | } | |
895427bd | 531 | hbqbp->total_size = LPFC_BPL_SIZE; |
51ef4c26 | 532 | return hbqbp; |
ed957684 JS |
533 | } |
534 | ||
e59058c4 | 535 | /** |
da0436e9 | 536 | * lpfc_els_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc |
e59058c4 JS |
537 | * @phba: HBA buffer was allocated for |
538 | * @hbqbp: HBQ container returned by lpfc_els_hbq_alloc | |
539 | * | |
540 | * Description: Frees both the container and the DMA-mapped buffer returned by | |
541 | * lpfc_els_hbq_alloc. | |
542 | * | |
543 | * Notes: Can be called with or without locks held. | |
544 | * | |
545 | * Returns: None | |
546 | **/ | |
ed957684 | 547 | void |
51ef4c26 | 548 | lpfc_els_hbq_free(struct lpfc_hba *phba, struct hbq_dmabuf *hbqbp) |
ed957684 | 549 | { |
771db5c0 | 550 | dma_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys); |
51ef4c26 | 551 | kfree(hbqbp); |
ed957684 JS |
552 | return; |
553 | } | |
554 | ||
da0436e9 JS |
555 | /** |
556 | * lpfc_sli4_rb_alloc - Allocate an SLI4 Receive buffer | |
557 | * @phba: HBA to allocate a receive buffer for | |
558 | * | |
559 | * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI | |
560 | * pool along a non-DMA-mapped container for it. | |
561 | * | |
562 | * Notes: Not interrupt-safe. Must be called with no locks held. | |
563 | * | |
564 | * Returns: | |
565 | * pointer to HBQ on success | |
566 | * NULL on failure | |
567 | **/ | |
568 | struct hbq_dmabuf * | |
569 | lpfc_sli4_rb_alloc(struct lpfc_hba *phba) | |
570 | { | |
571 | struct hbq_dmabuf *dma_buf; | |
572 | ||
2e90f4b5 | 573 | dma_buf = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL); |
da0436e9 JS |
574 | if (!dma_buf) |
575 | return NULL; | |
576 | ||
771db5c0 | 577 | dma_buf->hbuf.virt = dma_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL, |
da0436e9 JS |
578 | &dma_buf->hbuf.phys); |
579 | if (!dma_buf->hbuf.virt) { | |
580 | kfree(dma_buf); | |
581 | return NULL; | |
582 | } | |
771db5c0 | 583 | dma_buf->dbuf.virt = dma_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL, |
da0436e9 JS |
584 | &dma_buf->dbuf.phys); |
585 | if (!dma_buf->dbuf.virt) { | |
771db5c0 | 586 | dma_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, |
da0436e9 JS |
587 | dma_buf->hbuf.phys); |
588 | kfree(dma_buf); | |
589 | return NULL; | |
590 | } | |
895427bd | 591 | dma_buf->total_size = LPFC_DATA_BUF_SIZE; |
da0436e9 JS |
592 | return dma_buf; |
593 | } | |
594 | ||
595 | /** | |
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 | |
599 | * | |
600 | * Description: Frees both the container and the DMA-mapped buffers returned by | |
601 | * lpfc_sli4_rb_alloc. | |
602 | * | |
603 | * Notes: Can be called with or without locks held. | |
604 | * | |
605 | * Returns: None | |
606 | **/ | |
607 | void | |
608 | lpfc_sli4_rb_free(struct lpfc_hba *phba, struct hbq_dmabuf *dmab) | |
609 | { | |
771db5c0 RP |
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); | |
da0436e9 | 612 | kfree(dmab); |
da0436e9 JS |
613 | } |
614 | ||
f358dd0c JS |
615 | /** |
616 | * lpfc_sli4_nvmet_alloc - Allocate an SLI4 Receive buffer | |
617 | * @phba: HBA to allocate a receive buffer for | |
618 | * | |
619 | * Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_pool PCI | |
620 | * pool along a non-DMA-mapped container for it. | |
621 | * | |
622 | * Notes: Not interrupt-safe. Must be called with no locks held. | |
623 | * | |
624 | * Returns: | |
625 | * pointer to HBQ on success | |
626 | * NULL on failure | |
627 | **/ | |
628 | struct rqb_dmabuf * | |
629 | lpfc_sli4_nvmet_alloc(struct lpfc_hba *phba) | |
630 | { | |
631 | struct rqb_dmabuf *dma_buf; | |
f358dd0c JS |
632 | |
633 | dma_buf = kzalloc(sizeof(struct rqb_dmabuf), GFP_KERNEL); | |
634 | if (!dma_buf) | |
635 | return NULL; | |
636 | ||
771db5c0 | 637 | dma_buf->hbuf.virt = dma_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL, |
f358dd0c JS |
638 | &dma_buf->hbuf.phys); |
639 | if (!dma_buf->hbuf.virt) { | |
640 | kfree(dma_buf); | |
641 | return NULL; | |
642 | } | |
771db5c0 | 643 | dma_buf->dbuf.virt = dma_pool_alloc(phba->lpfc_nvmet_drb_pool, |
3c603be9 | 644 | GFP_KERNEL, &dma_buf->dbuf.phys); |
f358dd0c | 645 | if (!dma_buf->dbuf.virt) { |
771db5c0 | 646 | dma_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, |
f358dd0c JS |
647 | dma_buf->hbuf.phys); |
648 | kfree(dma_buf); | |
649 | return NULL; | |
650 | } | |
3c603be9 | 651 | dma_buf->total_size = LPFC_NVMET_DATA_BUF_SIZE; |
f358dd0c JS |
652 | return dma_buf; |
653 | } | |
654 | ||
655 | /** | |
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 | |
659 | * | |
660 | * Description: Frees both the container and the DMA-mapped buffers returned by | |
661 | * lpfc_sli4_nvmet_alloc. | |
662 | * | |
663 | * Notes: Can be called with or without locks held. | |
664 | * | |
665 | * Returns: None | |
666 | **/ | |
667 | void | |
668 | lpfc_sli4_nvmet_free(struct lpfc_hba *phba, struct rqb_dmabuf *dmab) | |
669 | { | |
771db5c0 RP |
670 | dma_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys); |
671 | dma_pool_free(phba->lpfc_nvmet_drb_pool, | |
3c603be9 | 672 | dmab->dbuf.virt, dmab->dbuf.phys); |
f358dd0c JS |
673 | kfree(dmab); |
674 | } | |
675 | ||
e59058c4 | 676 | /** |
3621a710 | 677 | * lpfc_in_buf_free - Free a DMA buffer |
e59058c4 JS |
678 | * @phba: HBA buffer is associated with |
679 | * @mp: Buffer to free | |
680 | * | |
681 | * Description: Frees the given DMA buffer in the appropriate way given if the | |
682 | * HBA is running in SLI3 mode with HBQs enabled. | |
683 | * | |
684 | * Notes: Takes phba->hbalock. Can be called with or without other locks held. | |
685 | * | |
686 | * Returns: None | |
687 | **/ | |
92d7f7b0 JS |
688 | void |
689 | lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp) | |
690 | { | |
691 | struct hbq_dmabuf *hbq_entry; | |
3163f725 | 692 | unsigned long flags; |
92d7f7b0 | 693 | |
7f5f3d0d JS |
694 | if (!mp) |
695 | return; | |
696 | ||
92d7f7b0 | 697 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
895427bd | 698 | hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf); |
3163f725 JS |
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); | |
703 | return; | |
704 | } | |
3163f725 | 705 | list_del(&hbq_entry->dbuf.list); |
92d7f7b0 | 706 | if (hbq_entry->tag == -1) { |
51ef4c26 JS |
707 | (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) |
708 | (phba, hbq_entry); | |
92d7f7b0 JS |
709 | } else { |
710 | lpfc_sli_free_hbq(phba, hbq_entry); | |
711 | } | |
3163f725 | 712 | spin_unlock_irqrestore(&phba->hbalock, flags); |
92d7f7b0 JS |
713 | } else { |
714 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
715 | kfree(mp); | |
716 | } | |
717 | return; | |
718 | } | |
d613b6a7 JS |
719 | |
720 | /** | |
721 | * lpfc_rq_buf_free - Free a RQ DMA buffer | |
722 | * @phba: HBA buffer is associated with | |
723 | * @mp: Buffer to free | |
724 | * | |
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. | |
727 | * | |
728 | * Notes: Takes phba->hbalock. Can be called with or without other locks held. | |
729 | * | |
730 | * Returns: None | |
731 | **/ | |
732 | void | |
733 | lpfc_rq_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp) | |
734 | { | |
735 | struct lpfc_rqb *rqbp; | |
736 | struct lpfc_rqe hrqe; | |
737 | struct lpfc_rqe drqe; | |
738 | struct rqb_dmabuf *rqb_entry; | |
739 | unsigned long flags; | |
740 | int rc; | |
741 | ||
742 | if (!mp) | |
743 | return; | |
744 | ||
745 | rqb_entry = container_of(mp, struct rqb_dmabuf, hbuf); | |
746 | rqbp = rqb_entry->hrq->rqbp; | |
747 | ||
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); | |
755 | if (rc < 0) { | |
6c621a22 JS |
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); | |
9816ef6e | 761 | (rqbp->rqb_free_buffer)(phba, rqb_entry); |
d613b6a7 JS |
762 | } else { |
763 | list_add_tail(&rqb_entry->hbuf.list, &rqbp->rqb_buffer_list); | |
764 | rqbp->buffer_count++; | |
765 | } | |
766 | ||
767 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
768 | } |