Commit | Line | Data |
---|---|---|
dfb99b05 TG |
1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | // Copyright 2014 Cisco Systems, Inc. All rights reserved. | |
c8806b6c NM |
3 | |
4 | #include <linux/errno.h> | |
5 | #include <linux/pci.h> | |
6 | #include <linux/slab.h> | |
7 | ||
8 | #include <linux/interrupt.h> | |
9 | #include <linux/workqueue.h> | |
10 | #include <linux/spinlock.h> | |
11 | #include <linux/mempool.h> | |
12 | #include <scsi/scsi_tcq.h> | |
13 | ||
14 | #include "snic_io.h" | |
15 | #include "snic.h" | |
16 | #include "cq_enet_desc.h" | |
17 | #include "snic_fwint.h" | |
18 | ||
19 | static void | |
20 | snic_wq_cmpl_frame_send(struct vnic_wq *wq, | |
21 | struct cq_desc *cq_desc, | |
22 | struct vnic_wq_buf *buf, | |
23 | void *opaque) | |
24 | { | |
25 | struct snic *snic = svnic_dev_priv(wq->vdev); | |
26 | ||
27 | SNIC_BUG_ON(buf->os_buf == NULL); | |
28 | ||
29 | if (snic_log_level & SNIC_DESC_LOGGING) | |
30 | SNIC_HOST_INFO(snic->shost, | |
31 | "Ack received for snic_host_req %p.\n", | |
32 | buf->os_buf); | |
33 | ||
34 | SNIC_TRC(snic->shost->host_no, 0, 0, | |
35 | ((ulong)(buf->os_buf) - sizeof(struct snic_req_info)), 0, 0, | |
36 | 0); | |
c9747821 | 37 | |
c8806b6c NM |
38 | buf->os_buf = NULL; |
39 | } | |
40 | ||
41 | static int | |
42 | snic_wq_cmpl_handler_cont(struct vnic_dev *vdev, | |
43 | struct cq_desc *cq_desc, | |
44 | u8 type, | |
45 | u16 q_num, | |
46 | u16 cmpl_idx, | |
47 | void *opaque) | |
48 | { | |
49 | struct snic *snic = svnic_dev_priv(vdev); | |
50 | unsigned long flags; | |
51 | ||
52 | SNIC_BUG_ON(q_num != 0); | |
53 | ||
54 | spin_lock_irqsave(&snic->wq_lock[q_num], flags); | |
55 | svnic_wq_service(&snic->wq[q_num], | |
56 | cq_desc, | |
57 | cmpl_idx, | |
58 | snic_wq_cmpl_frame_send, | |
59 | NULL); | |
60 | spin_unlock_irqrestore(&snic->wq_lock[q_num], flags); | |
61 | ||
62 | return 0; | |
63 | } /* end of snic_cmpl_handler_cont */ | |
64 | ||
65 | int | |
66 | snic_wq_cmpl_handler(struct snic *snic, int work_to_do) | |
67 | { | |
68 | unsigned int work_done = 0; | |
69 | unsigned int i; | |
70 | ||
71 | snic->s_stats.misc.last_ack_time = jiffies; | |
72 | for (i = 0; i < snic->wq_count; i++) { | |
73 | work_done += svnic_cq_service(&snic->cq[i], | |
74 | work_to_do, | |
75 | snic_wq_cmpl_handler_cont, | |
76 | NULL); | |
77 | } | |
78 | ||
79 | return work_done; | |
80 | } /* end of snic_wq_cmpl_handler */ | |
81 | ||
82 | void | |
83 | snic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) | |
84 | { | |
85 | ||
86 | struct snic_host_req *req = buf->os_buf; | |
87 | struct snic *snic = svnic_dev_priv(wq->vdev); | |
88 | struct snic_req_info *rqi = NULL; | |
89 | unsigned long flags; | |
90 | ||
cecfed31 CH |
91 | dma_unmap_single(&snic->pdev->dev, buf->dma_addr, buf->len, |
92 | DMA_TO_DEVICE); | |
c8806b6c NM |
93 | |
94 | rqi = req_to_rqi(req); | |
95 | spin_lock_irqsave(&snic->spl_cmd_lock, flags); | |
96 | if (list_empty(&rqi->list)) { | |
97 | spin_unlock_irqrestore(&snic->spl_cmd_lock, flags); | |
98 | goto end; | |
99 | } | |
100 | ||
101 | SNIC_BUG_ON(rqi->list.next == NULL); /* if not added to spl_cmd_list */ | |
102 | list_del_init(&rqi->list); | |
103 | spin_unlock_irqrestore(&snic->spl_cmd_lock, flags); | |
104 | ||
105 | if (rqi->sge_va) { | |
106 | snic_pci_unmap_rsp_buf(snic, rqi); | |
107 | kfree((void *)rqi->sge_va); | |
108 | rqi->sge_va = 0; | |
109 | } | |
110 | snic_req_free(snic, rqi); | |
111 | SNIC_HOST_INFO(snic->shost, "snic_free_wq_buf .. freed.\n"); | |
112 | ||
113 | end: | |
114 | return; | |
115 | } | |
116 | ||
117 | /* Criteria to select work queue in multi queue mode */ | |
118 | static int | |
119 | snic_select_wq(struct snic *snic) | |
120 | { | |
121 | /* No multi queue support for now */ | |
122 | BUILD_BUG_ON(SNIC_WQ_MAX > 1); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
c9747821 NM |
127 | static int |
128 | snic_wqdesc_avail(struct snic *snic, int q_num, int req_type) | |
129 | { | |
130 | int nr_wqdesc = snic->config.wq_enet_desc_count; | |
131 | ||
132 | if (q_num > 0) { | |
133 | /* | |
134 | * Multi Queue case, additional care is required. | |
135 | * Per WQ active requests need to be maintained. | |
136 | */ | |
137 | SNIC_HOST_INFO(snic->shost, "desc_avail: Multi Queue case.\n"); | |
138 | SNIC_BUG_ON(q_num > 0); | |
139 | ||
140 | return -1; | |
141 | } | |
142 | ||
143 | nr_wqdesc -= atomic64_read(&snic->s_stats.fw.actv_reqs); | |
144 | ||
145 | return ((req_type == SNIC_REQ_HBA_RESET) ? nr_wqdesc : nr_wqdesc - 1); | |
146 | } | |
147 | ||
c8806b6c NM |
148 | int |
149 | snic_queue_wq_desc(struct snic *snic, void *os_buf, u16 len) | |
150 | { | |
151 | dma_addr_t pa = 0; | |
152 | unsigned long flags; | |
153 | struct snic_fw_stats *fwstats = &snic->s_stats.fw; | |
c9747821 | 154 | struct snic_host_req *req = (struct snic_host_req *) os_buf; |
c8806b6c | 155 | long act_reqs; |
c9747821 | 156 | long desc_avail = 0; |
c8806b6c NM |
157 | int q_num = 0; |
158 | ||
159 | snic_print_desc(__func__, os_buf, len); | |
160 | ||
161 | /* Map request buffer */ | |
cecfed31 CH |
162 | pa = dma_map_single(&snic->pdev->dev, os_buf, len, DMA_TO_DEVICE); |
163 | if (dma_mapping_error(&snic->pdev->dev, pa)) { | |
c8806b6c NM |
164 | SNIC_HOST_ERR(snic->shost, "qdesc: PCI DMA Mapping Fail.\n"); |
165 | ||
166 | return -ENOMEM; | |
167 | } | |
168 | ||
c9747821 NM |
169 | req->req_pa = (ulong)pa; |
170 | ||
c8806b6c NM |
171 | q_num = snic_select_wq(snic); |
172 | ||
173 | spin_lock_irqsave(&snic->wq_lock[q_num], flags); | |
c9747821 NM |
174 | desc_avail = snic_wqdesc_avail(snic, q_num, req->hdr.type); |
175 | if (desc_avail <= 0) { | |
cecfed31 | 176 | dma_unmap_single(&snic->pdev->dev, pa, len, DMA_TO_DEVICE); |
c9747821 | 177 | req->req_pa = 0; |
c8806b6c NM |
178 | spin_unlock_irqrestore(&snic->wq_lock[q_num], flags); |
179 | atomic64_inc(&snic->s_stats.misc.wq_alloc_fail); | |
180 | SNIC_DBG("host = %d, WQ is Full\n", snic->shost->host_no); | |
181 | ||
182 | return -ENOMEM; | |
183 | } | |
184 | ||
185 | snic_queue_wq_eth_desc(&snic->wq[q_num], os_buf, pa, len, 0, 0, 1); | |
c9747821 NM |
186 | /* |
187 | * Update stats | |
188 | * note: when multi queue enabled, fw actv_reqs should be per queue. | |
189 | */ | |
190 | act_reqs = atomic64_inc_return(&fwstats->actv_reqs); | |
c8806b6c NM |
191 | spin_unlock_irqrestore(&snic->wq_lock[q_num], flags); |
192 | ||
c8806b6c NM |
193 | if (act_reqs > atomic64_read(&fwstats->max_actv_reqs)) |
194 | atomic64_set(&fwstats->max_actv_reqs, act_reqs); | |
195 | ||
196 | return 0; | |
197 | } /* end of snic_queue_wq_desc() */ | |
198 | ||
199 | /* | |
200 | * snic_handle_untagged_req: Adds snic specific requests to spl_cmd_list. | |
201 | * Purpose : Used during driver unload to clean up the requests. | |
202 | */ | |
203 | void | |
204 | snic_handle_untagged_req(struct snic *snic, struct snic_req_info *rqi) | |
205 | { | |
206 | unsigned long flags; | |
207 | ||
208 | INIT_LIST_HEAD(&rqi->list); | |
209 | ||
210 | spin_lock_irqsave(&snic->spl_cmd_lock, flags); | |
211 | list_add_tail(&rqi->list, &snic->spl_cmd_list); | |
212 | spin_unlock_irqrestore(&snic->spl_cmd_lock, flags); | |
213 | } | |
214 | ||
215 | /* | |
216 | * snic_req_init: | |
217 | * Allocates snic_req_info + snic_host_req + sgl data, and initializes. | |
218 | */ | |
219 | struct snic_req_info * | |
220 | snic_req_init(struct snic *snic, int sg_cnt) | |
221 | { | |
222 | u8 typ; | |
223 | struct snic_req_info *rqi = NULL; | |
224 | ||
225 | typ = (sg_cnt <= SNIC_REQ_CACHE_DFLT_SGL) ? | |
226 | SNIC_REQ_CACHE_DFLT_SGL : SNIC_REQ_CACHE_MAX_SGL; | |
227 | ||
228 | rqi = mempool_alloc(snic->req_pool[typ], GFP_ATOMIC); | |
229 | if (!rqi) { | |
230 | atomic64_inc(&snic->s_stats.io.alloc_fail); | |
231 | SNIC_HOST_ERR(snic->shost, | |
232 | "Failed to allocate memory from snic req pool id = %d\n", | |
233 | typ); | |
234 | return rqi; | |
235 | } | |
236 | ||
237 | memset(rqi, 0, sizeof(*rqi)); | |
238 | rqi->rq_pool_type = typ; | |
239 | rqi->start_time = jiffies; | |
240 | rqi->req = (struct snic_host_req *) (rqi + 1); | |
241 | rqi->req_len = sizeof(struct snic_host_req); | |
242 | rqi->snic = snic; | |
243 | ||
244 | rqi->req = (struct snic_host_req *)(rqi + 1); | |
245 | ||
246 | if (sg_cnt == 0) | |
247 | goto end; | |
248 | ||
249 | rqi->req_len += (sg_cnt * sizeof(struct snic_sg_desc)); | |
250 | ||
251 | if (sg_cnt > atomic64_read(&snic->s_stats.io.max_sgl)) | |
252 | atomic64_set(&snic->s_stats.io.max_sgl, sg_cnt); | |
253 | ||
254 | SNIC_BUG_ON(sg_cnt > SNIC_MAX_SG_DESC_CNT); | |
255 | atomic64_inc(&snic->s_stats.io.sgl_cnt[sg_cnt - 1]); | |
256 | ||
257 | end: | |
258 | memset(rqi->req, 0, rqi->req_len); | |
259 | ||
260 | /* pre initialization of init_ctx to support req_to_rqi */ | |
261 | rqi->req->hdr.init_ctx = (ulong) rqi; | |
262 | ||
263 | SNIC_SCSI_DBG(snic->shost, "Req_alloc:rqi = %p allocatd.\n", rqi); | |
264 | ||
265 | return rqi; | |
266 | } /* end of snic_req_init */ | |
267 | ||
268 | /* | |
269 | * snic_abort_req_init : Inits abort request. | |
270 | */ | |
271 | struct snic_host_req * | |
272 | snic_abort_req_init(struct snic *snic, struct snic_req_info *rqi) | |
273 | { | |
274 | struct snic_host_req *req = NULL; | |
275 | ||
276 | SNIC_BUG_ON(!rqi); | |
277 | ||
278 | /* If abort to be issued second time, then reuse */ | |
279 | if (rqi->abort_req) | |
280 | return rqi->abort_req; | |
281 | ||
282 | ||
283 | req = mempool_alloc(snic->req_pool[SNIC_REQ_TM_CACHE], GFP_ATOMIC); | |
284 | if (!req) { | |
285 | SNIC_HOST_ERR(snic->shost, "abts:Failed to alloc tm req.\n"); | |
286 | WARN_ON_ONCE(1); | |
287 | ||
288 | return NULL; | |
289 | } | |
290 | ||
291 | rqi->abort_req = req; | |
292 | memset(req, 0, sizeof(struct snic_host_req)); | |
293 | /* pre initialization of init_ctx to support req_to_rqi */ | |
294 | req->hdr.init_ctx = (ulong) rqi; | |
295 | ||
296 | return req; | |
297 | } /* end of snic_abort_req_init */ | |
298 | ||
299 | /* | |
300 | * snic_dr_req_init : Inits device reset req | |
301 | */ | |
302 | struct snic_host_req * | |
303 | snic_dr_req_init(struct snic *snic, struct snic_req_info *rqi) | |
304 | { | |
305 | struct snic_host_req *req = NULL; | |
306 | ||
307 | SNIC_BUG_ON(!rqi); | |
308 | ||
309 | req = mempool_alloc(snic->req_pool[SNIC_REQ_TM_CACHE], GFP_ATOMIC); | |
310 | if (!req) { | |
311 | SNIC_HOST_ERR(snic->shost, "dr:Failed to alloc tm req.\n"); | |
312 | WARN_ON_ONCE(1); | |
313 | ||
314 | return NULL; | |
315 | } | |
316 | ||
317 | SNIC_BUG_ON(rqi->dr_req != NULL); | |
318 | rqi->dr_req = req; | |
319 | memset(req, 0, sizeof(struct snic_host_req)); | |
320 | /* pre initialization of init_ctx to support req_to_rqi */ | |
321 | req->hdr.init_ctx = (ulong) rqi; | |
322 | ||
323 | return req; | |
324 | } /* end of snic_dr_req_init */ | |
325 | ||
326 | /* frees snic_req_info and snic_host_req */ | |
327 | void | |
328 | snic_req_free(struct snic *snic, struct snic_req_info *rqi) | |
329 | { | |
330 | SNIC_BUG_ON(rqi->req == rqi->abort_req); | |
331 | SNIC_BUG_ON(rqi->req == rqi->dr_req); | |
332 | SNIC_BUG_ON(rqi->sge_va != 0); | |
333 | ||
334 | SNIC_SCSI_DBG(snic->shost, | |
335 | "Req_free:rqi %p:ioreq %p:abt %p:dr %p\n", | |
336 | rqi, rqi->req, rqi->abort_req, rqi->dr_req); | |
337 | ||
c9747821 NM |
338 | if (rqi->abort_req) { |
339 | if (rqi->abort_req->req_pa) | |
cecfed31 | 340 | dma_unmap_single(&snic->pdev->dev, |
c9747821 NM |
341 | rqi->abort_req->req_pa, |
342 | sizeof(struct snic_host_req), | |
cecfed31 | 343 | DMA_TO_DEVICE); |
c9747821 | 344 | |
c8806b6c | 345 | mempool_free(rqi->abort_req, snic->req_pool[SNIC_REQ_TM_CACHE]); |
c9747821 NM |
346 | } |
347 | ||
348 | if (rqi->dr_req) { | |
349 | if (rqi->dr_req->req_pa) | |
cecfed31 | 350 | dma_unmap_single(&snic->pdev->dev, |
c9747821 NM |
351 | rqi->dr_req->req_pa, |
352 | sizeof(struct snic_host_req), | |
cecfed31 | 353 | DMA_TO_DEVICE); |
c8806b6c | 354 | |
c8806b6c | 355 | mempool_free(rqi->dr_req, snic->req_pool[SNIC_REQ_TM_CACHE]); |
c9747821 NM |
356 | } |
357 | ||
358 | if (rqi->req->req_pa) | |
cecfed31 | 359 | dma_unmap_single(&snic->pdev->dev, |
c9747821 NM |
360 | rqi->req->req_pa, |
361 | rqi->req_len, | |
cecfed31 | 362 | DMA_TO_DEVICE); |
c8806b6c NM |
363 | |
364 | mempool_free(rqi, snic->req_pool[rqi->rq_pool_type]); | |
365 | } | |
366 | ||
367 | void | |
368 | snic_pci_unmap_rsp_buf(struct snic *snic, struct snic_req_info *rqi) | |
369 | { | |
370 | struct snic_sg_desc *sgd; | |
371 | ||
372 | sgd = req_to_sgl(rqi_to_req(rqi)); | |
373 | SNIC_BUG_ON(sgd[0].addr == 0); | |
cecfed31 | 374 | dma_unmap_single(&snic->pdev->dev, |
c8806b6c NM |
375 | le64_to_cpu(sgd[0].addr), |
376 | le32_to_cpu(sgd[0].len), | |
cecfed31 | 377 | DMA_FROM_DEVICE); |
c8806b6c NM |
378 | } |
379 | ||
380 | /* | |
381 | * snic_free_all_untagged_reqs: Walks through untagged reqs and frees them. | |
382 | */ | |
383 | void | |
384 | snic_free_all_untagged_reqs(struct snic *snic) | |
385 | { | |
386 | struct snic_req_info *rqi; | |
387 | struct list_head *cur, *nxt; | |
388 | unsigned long flags; | |
389 | ||
390 | spin_lock_irqsave(&snic->spl_cmd_lock, flags); | |
391 | list_for_each_safe(cur, nxt, &snic->spl_cmd_list) { | |
392 | rqi = list_entry(cur, struct snic_req_info, list); | |
393 | list_del_init(&rqi->list); | |
394 | if (rqi->sge_va) { | |
395 | snic_pci_unmap_rsp_buf(snic, rqi); | |
396 | kfree((void *)rqi->sge_va); | |
397 | rqi->sge_va = 0; | |
398 | } | |
399 | ||
400 | snic_req_free(snic, rqi); | |
401 | } | |
402 | spin_unlock_irqrestore(&snic->spl_cmd_lock, flags); | |
403 | } | |
404 | ||
405 | /* | |
406 | * snic_release_untagged_req : Unlinks the untagged req and frees it. | |
407 | */ | |
408 | void | |
409 | snic_release_untagged_req(struct snic *snic, struct snic_req_info *rqi) | |
410 | { | |
411 | unsigned long flags; | |
412 | ||
413 | spin_lock_irqsave(&snic->snic_lock, flags); | |
414 | if (snic->in_remove) { | |
415 | spin_unlock_irqrestore(&snic->snic_lock, flags); | |
416 | goto end; | |
417 | } | |
418 | spin_unlock_irqrestore(&snic->snic_lock, flags); | |
419 | ||
420 | spin_lock_irqsave(&snic->spl_cmd_lock, flags); | |
421 | if (list_empty(&rqi->list)) { | |
422 | spin_unlock_irqrestore(&snic->spl_cmd_lock, flags); | |
423 | goto end; | |
424 | } | |
425 | list_del_init(&rqi->list); | |
426 | spin_unlock_irqrestore(&snic->spl_cmd_lock, flags); | |
427 | snic_req_free(snic, rqi); | |
428 | ||
429 | end: | |
430 | return; | |
431 | } | |
432 | ||
433 | /* dump buf in hex fmt */ | |
434 | void | |
435 | snic_hex_dump(char *pfx, char *data, int len) | |
436 | { | |
437 | SNIC_INFO("%s Dumping Data of Len = %d\n", pfx, len); | |
438 | print_hex_dump_bytes(pfx, DUMP_PREFIX_NONE, data, len); | |
439 | } | |
440 | ||
441 | #define LINE_BUFSZ 128 /* for snic_print_desc fn */ | |
442 | static void | |
443 | snic_dump_desc(const char *fn, char *os_buf, int len) | |
444 | { | |
445 | struct snic_host_req *req = (struct snic_host_req *) os_buf; | |
446 | struct snic_fw_req *fwreq = (struct snic_fw_req *) os_buf; | |
447 | struct snic_req_info *rqi = NULL; | |
448 | char line[LINE_BUFSZ] = { '\0' }; | |
449 | char *cmd_str = NULL; | |
450 | ||
451 | if (req->hdr.type >= SNIC_RSP_REPORT_TGTS_CMPL) | |
452 | rqi = (struct snic_req_info *) fwreq->hdr.init_ctx; | |
453 | else | |
454 | rqi = (struct snic_req_info *) req->hdr.init_ctx; | |
455 | ||
456 | SNIC_BUG_ON(rqi == NULL || rqi->req == NULL); | |
457 | switch (req->hdr.type) { | |
458 | case SNIC_REQ_REPORT_TGTS: | |
459 | cmd_str = "report-tgt : "; | |
460 | snprintf(line, LINE_BUFSZ, "SNIC_REQ_REPORT_TGTS :"); | |
461 | break; | |
462 | ||
463 | case SNIC_REQ_ICMND: | |
464 | cmd_str = "icmnd : "; | |
465 | snprintf(line, LINE_BUFSZ, "SNIC_REQ_ICMND : 0x%x :", | |
466 | req->u.icmnd.cdb[0]); | |
467 | break; | |
468 | ||
469 | case SNIC_REQ_ITMF: | |
470 | cmd_str = "itmf : "; | |
471 | snprintf(line, LINE_BUFSZ, "SNIC_REQ_ITMF :"); | |
472 | break; | |
473 | ||
474 | case SNIC_REQ_HBA_RESET: | |
475 | cmd_str = "hba reset :"; | |
476 | snprintf(line, LINE_BUFSZ, "SNIC_REQ_HBA_RESET :"); | |
477 | break; | |
478 | ||
479 | case SNIC_REQ_EXCH_VER: | |
480 | cmd_str = "exch ver : "; | |
481 | snprintf(line, LINE_BUFSZ, "SNIC_REQ_EXCH_VER :"); | |
482 | break; | |
483 | ||
484 | case SNIC_REQ_TGT_INFO: | |
485 | cmd_str = "tgt info : "; | |
486 | break; | |
487 | ||
488 | case SNIC_RSP_REPORT_TGTS_CMPL: | |
489 | cmd_str = "report tgt cmpl : "; | |
490 | snprintf(line, LINE_BUFSZ, "SNIC_RSP_REPORT_TGTS_CMPL :"); | |
491 | break; | |
492 | ||
493 | case SNIC_RSP_ICMND_CMPL: | |
494 | cmd_str = "icmnd_cmpl : "; | |
495 | snprintf(line, LINE_BUFSZ, "SNIC_RSP_ICMND_CMPL : 0x%x :", | |
496 | rqi->req->u.icmnd.cdb[0]); | |
497 | break; | |
498 | ||
499 | case SNIC_RSP_ITMF_CMPL: | |
500 | cmd_str = "itmf_cmpl : "; | |
501 | snprintf(line, LINE_BUFSZ, "SNIC_RSP_ITMF_CMPL :"); | |
502 | break; | |
503 | ||
504 | case SNIC_RSP_HBA_RESET_CMPL: | |
505 | cmd_str = "hba_reset_cmpl : "; | |
506 | snprintf(line, LINE_BUFSZ, "SNIC_RSP_HBA_RESET_CMPL :"); | |
507 | break; | |
508 | ||
509 | case SNIC_RSP_EXCH_VER_CMPL: | |
510 | cmd_str = "exch_ver_cmpl : "; | |
511 | snprintf(line, LINE_BUFSZ, "SNIC_RSP_EXCH_VER_CMPL :"); | |
512 | break; | |
513 | ||
514 | case SNIC_MSG_ACK: | |
515 | cmd_str = "msg ack : "; | |
516 | snprintf(line, LINE_BUFSZ, "SNIC_MSG_ACK :"); | |
517 | break; | |
518 | ||
519 | case SNIC_MSG_ASYNC_EVNOTIFY: | |
520 | cmd_str = "async notify : "; | |
521 | snprintf(line, LINE_BUFSZ, "SNIC_MSG_ASYNC_EVNOTIFY :"); | |
522 | break; | |
523 | ||
524 | default: | |
525 | cmd_str = "unknown : "; | |
526 | SNIC_BUG_ON(1); | |
527 | break; | |
528 | } | |
529 | ||
530 | SNIC_INFO("%s:%s >>cmndid=%x:sg_cnt = %x:status = %x:ctx = %lx.\n", | |
531 | fn, line, req->hdr.cmnd_id, req->hdr.sg_cnt, req->hdr.status, | |
532 | req->hdr.init_ctx); | |
533 | ||
534 | /* Enable it, to dump byte stream */ | |
535 | if (snic_log_level & 0x20) | |
536 | snic_hex_dump(cmd_str, os_buf, len); | |
537 | } /* end of __snic_print_desc */ | |
538 | ||
539 | void | |
540 | snic_print_desc(const char *fn, char *os_buf, int len) | |
541 | { | |
542 | if (snic_log_level & SNIC_DESC_LOGGING) | |
543 | snic_dump_desc(fn, os_buf, len); | |
544 | } | |
545 | ||
546 | void | |
547 | snic_calc_io_process_time(struct snic *snic, struct snic_req_info *rqi) | |
548 | { | |
549 | u64 duration; | |
550 | ||
551 | duration = jiffies - rqi->start_time; | |
552 | ||
553 | if (duration > atomic64_read(&snic->s_stats.io.max_time)) | |
554 | atomic64_set(&snic->s_stats.io.max_time, duration); | |
555 | } |