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7725ccfd JH |
1 | /* |
2 | * Copyright (c) 2005-2009 Brocade Communications Systems, Inc. | |
3 | * All rights reserved | |
4 | * www.brocade.com | |
5 | * | |
6 | * Linux driver for Brocade Fibre Channel Host Bus Adapter. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License (GPL) Version 2 as | |
10 | * published by the Free Software Foundation | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | */ | |
17 | ||
18 | #include <bfa.h> | |
19 | #include <bfa_cb_ioim_macros.h> | |
20 | ||
21 | BFA_TRC_FILE(HAL, TSKIM); | |
22 | ||
23 | /** | |
24 | * task management completion handling | |
25 | */ | |
f8ceafde JH |
26 | #define bfa_tskim_qcomp(__tskim, __cbfn) do { \ |
27 | bfa_cb_queue((__tskim)->bfa, &(__tskim)->hcb_qe, \ | |
28 | __cbfn, (__tskim)); \ | |
7725ccfd JH |
29 | bfa_tskim_notify_comp(__tskim); \ |
30 | } while (0) | |
31 | ||
f8ceafde JH |
32 | #define bfa_tskim_notify_comp(__tskim) do { \ |
33 | if ((__tskim)->notify) \ | |
7725ccfd JH |
34 | bfa_itnim_tskdone((__tskim)->itnim); \ |
35 | } while (0) | |
36 | ||
37 | /* | |
38 | * forward declarations | |
39 | */ | |
40 | static void __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete); | |
41 | static void __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete); | |
42 | static bfa_boolean_t bfa_tskim_match_scope(struct bfa_tskim_s *tskim, | |
43 | lun_t lun); | |
44 | static void bfa_tskim_gather_ios(struct bfa_tskim_s *tskim); | |
45 | static void bfa_tskim_cleanp_comp(void *tskim_cbarg); | |
46 | static void bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim); | |
47 | static bfa_boolean_t bfa_tskim_send(struct bfa_tskim_s *tskim); | |
48 | static bfa_boolean_t bfa_tskim_send_abort(struct bfa_tskim_s *tskim); | |
49 | static void bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim); | |
50 | ||
51 | /** | |
52 | * bfa_tskim_sm | |
53 | */ | |
54 | ||
55 | enum bfa_tskim_event { | |
56 | BFA_TSKIM_SM_START = 1, /* TM command start */ | |
57 | BFA_TSKIM_SM_DONE = 2, /* TM completion */ | |
58 | BFA_TSKIM_SM_QRESUME = 3, /* resume after qfull */ | |
59 | BFA_TSKIM_SM_HWFAIL = 5, /* IOC h/w failure event */ | |
60 | BFA_TSKIM_SM_HCB = 6, /* BFA callback completion */ | |
61 | BFA_TSKIM_SM_IOS_DONE = 7, /* IO and sub TM completions */ | |
62 | BFA_TSKIM_SM_CLEANUP = 8, /* TM cleanup on ITN offline */ | |
63 | BFA_TSKIM_SM_CLEANUP_DONE = 9, /* TM abort completion */ | |
64 | }; | |
65 | ||
66 | static void bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, | |
67 | enum bfa_tskim_event event); | |
68 | static void bfa_tskim_sm_active(struct bfa_tskim_s *tskim, | |
69 | enum bfa_tskim_event event); | |
70 | static void bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, | |
71 | enum bfa_tskim_event event); | |
72 | static void bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, | |
73 | enum bfa_tskim_event event); | |
74 | static void bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, | |
75 | enum bfa_tskim_event event); | |
76 | static void bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim, | |
77 | enum bfa_tskim_event event); | |
78 | static void bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, | |
79 | enum bfa_tskim_event event); | |
80 | ||
81 | /** | |
82 | * Task management command beginning state. | |
83 | */ | |
84 | static void | |
85 | bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) | |
86 | { | |
87 | bfa_trc(tskim->bfa, event); | |
88 | ||
89 | switch (event) { | |
90 | case BFA_TSKIM_SM_START: | |
91 | bfa_sm_set_state(tskim, bfa_tskim_sm_active); | |
92 | bfa_tskim_gather_ios(tskim); | |
93 | ||
94 | /** | |
95 | * If device is offline, do not send TM on wire. Just cleanup | |
96 | * any pending IO requests and complete TM request. | |
97 | */ | |
98 | if (!bfa_itnim_is_online(tskim->itnim)) { | |
99 | bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); | |
100 | tskim->tsk_status = BFI_TSKIM_STS_OK; | |
101 | bfa_tskim_cleanup_ios(tskim); | |
102 | return; | |
103 | } | |
104 | ||
105 | if (!bfa_tskim_send(tskim)) { | |
106 | bfa_sm_set_state(tskim, bfa_tskim_sm_qfull); | |
107 | bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq, | |
108 | &tskim->reqq_wait); | |
109 | } | |
110 | break; | |
111 | ||
112 | default: | |
113 | bfa_assert(0); | |
114 | } | |
115 | } | |
116 | ||
117 | /** | |
118 | * brief | |
119 | * TM command is active, awaiting completion from firmware to | |
120 | * cleanup IO requests in TM scope. | |
121 | */ | |
122 | static void | |
123 | bfa_tskim_sm_active(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) | |
124 | { | |
125 | bfa_trc(tskim->bfa, event); | |
126 | ||
127 | switch (event) { | |
128 | case BFA_TSKIM_SM_DONE: | |
129 | bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); | |
130 | bfa_tskim_cleanup_ios(tskim); | |
131 | break; | |
132 | ||
133 | case BFA_TSKIM_SM_CLEANUP: | |
134 | bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup); | |
135 | if (!bfa_tskim_send_abort(tskim)) { | |
136 | bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup_qfull); | |
137 | bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq, | |
138 | &tskim->reqq_wait); | |
139 | } | |
140 | break; | |
141 | ||
142 | case BFA_TSKIM_SM_HWFAIL: | |
143 | bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); | |
144 | bfa_tskim_iocdisable_ios(tskim); | |
145 | bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); | |
146 | break; | |
147 | ||
148 | default: | |
149 | bfa_assert(0); | |
150 | } | |
151 | } | |
152 | ||
153 | /** | |
154 | * An active TM is being cleaned up since ITN is offline. Awaiting cleanup | |
155 | * completion event from firmware. | |
156 | */ | |
157 | static void | |
158 | bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) | |
159 | { | |
160 | bfa_trc(tskim->bfa, event); | |
161 | ||
162 | switch (event) { | |
163 | case BFA_TSKIM_SM_DONE: | |
164 | /** | |
165 | * Ignore and wait for ABORT completion from firmware. | |
166 | */ | |
167 | break; | |
168 | ||
169 | case BFA_TSKIM_SM_CLEANUP_DONE: | |
170 | bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); | |
171 | bfa_tskim_cleanup_ios(tskim); | |
172 | break; | |
173 | ||
174 | case BFA_TSKIM_SM_HWFAIL: | |
175 | bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); | |
176 | bfa_tskim_iocdisable_ios(tskim); | |
177 | bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); | |
178 | break; | |
179 | ||
180 | default: | |
181 | bfa_assert(0); | |
182 | } | |
183 | } | |
184 | ||
185 | static void | |
186 | bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) | |
187 | { | |
188 | bfa_trc(tskim->bfa, event); | |
189 | ||
190 | switch (event) { | |
191 | case BFA_TSKIM_SM_IOS_DONE: | |
192 | bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); | |
193 | bfa_tskim_qcomp(tskim, __bfa_cb_tskim_done); | |
194 | break; | |
195 | ||
196 | case BFA_TSKIM_SM_CLEANUP: | |
197 | /** | |
198 | * Ignore, TM command completed on wire. | |
199 | * Notify TM conmpletion on IO cleanup completion. | |
200 | */ | |
201 | break; | |
202 | ||
203 | case BFA_TSKIM_SM_HWFAIL: | |
204 | bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); | |
205 | bfa_tskim_iocdisable_ios(tskim); | |
206 | bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); | |
207 | break; | |
208 | ||
209 | default: | |
210 | bfa_assert(0); | |
211 | } | |
212 | } | |
213 | ||
214 | /** | |
215 | * Task management command is waiting for room in request CQ | |
216 | */ | |
217 | static void | |
218 | bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) | |
219 | { | |
220 | bfa_trc(tskim->bfa, event); | |
221 | ||
222 | switch (event) { | |
223 | case BFA_TSKIM_SM_QRESUME: | |
224 | bfa_sm_set_state(tskim, bfa_tskim_sm_active); | |
225 | bfa_tskim_send(tskim); | |
226 | break; | |
227 | ||
228 | case BFA_TSKIM_SM_CLEANUP: | |
229 | /** | |
230 | * No need to send TM on wire since ITN is offline. | |
231 | */ | |
232 | bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); | |
233 | bfa_reqq_wcancel(&tskim->reqq_wait); | |
234 | bfa_tskim_cleanup_ios(tskim); | |
235 | break; | |
236 | ||
237 | case BFA_TSKIM_SM_HWFAIL: | |
238 | bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); | |
239 | bfa_reqq_wcancel(&tskim->reqq_wait); | |
240 | bfa_tskim_iocdisable_ios(tskim); | |
241 | bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); | |
242 | break; | |
243 | ||
244 | default: | |
245 | bfa_assert(0); | |
246 | } | |
247 | } | |
248 | ||
249 | /** | |
250 | * Task management command is active, awaiting for room in request CQ | |
251 | * to send clean up request. | |
252 | */ | |
253 | static void | |
254 | bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim, | |
255 | enum bfa_tskim_event event) | |
256 | { | |
257 | bfa_trc(tskim->bfa, event); | |
258 | ||
259 | switch (event) { | |
260 | case BFA_TSKIM_SM_DONE: | |
261 | bfa_reqq_wcancel(&tskim->reqq_wait); | |
262 | /** | |
263 | * | |
264 | * Fall through !!! | |
265 | */ | |
266 | ||
267 | case BFA_TSKIM_SM_QRESUME: | |
268 | bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup); | |
269 | bfa_tskim_send_abort(tskim); | |
270 | break; | |
271 | ||
272 | case BFA_TSKIM_SM_HWFAIL: | |
273 | bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); | |
274 | bfa_reqq_wcancel(&tskim->reqq_wait); | |
275 | bfa_tskim_iocdisable_ios(tskim); | |
276 | bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); | |
277 | break; | |
278 | ||
279 | default: | |
280 | bfa_assert(0); | |
281 | } | |
282 | } | |
283 | ||
284 | /** | |
285 | * BFA callback is pending | |
286 | */ | |
287 | static void | |
288 | bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) | |
289 | { | |
290 | bfa_trc(tskim->bfa, event); | |
291 | ||
292 | switch (event) { | |
293 | case BFA_TSKIM_SM_HCB: | |
294 | bfa_sm_set_state(tskim, bfa_tskim_sm_uninit); | |
295 | bfa_tskim_free(tskim); | |
296 | break; | |
297 | ||
298 | case BFA_TSKIM_SM_CLEANUP: | |
299 | bfa_tskim_notify_comp(tskim); | |
300 | break; | |
301 | ||
302 | case BFA_TSKIM_SM_HWFAIL: | |
303 | break; | |
304 | ||
305 | default: | |
306 | bfa_assert(0); | |
307 | } | |
308 | } | |
309 | ||
310 | ||
311 | ||
312 | /** | |
313 | * bfa_tskim_private | |
314 | */ | |
315 | ||
316 | static void | |
317 | __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete) | |
318 | { | |
319 | struct bfa_tskim_s *tskim = cbarg; | |
320 | ||
321 | if (!complete) { | |
322 | bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB); | |
323 | return; | |
324 | } | |
325 | ||
326 | bfa_stats(tskim->itnim, tm_success); | |
327 | bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, tskim->tsk_status); | |
328 | } | |
329 | ||
330 | static void | |
331 | __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete) | |
332 | { | |
333 | struct bfa_tskim_s *tskim = cbarg; | |
334 | ||
335 | if (!complete) { | |
336 | bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB); | |
337 | return; | |
338 | } | |
339 | ||
340 | bfa_stats(tskim->itnim, tm_failures); | |
341 | bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, | |
342 | BFI_TSKIM_STS_FAILED); | |
343 | } | |
344 | ||
345 | static bfa_boolean_t | |
346 | bfa_tskim_match_scope(struct bfa_tskim_s *tskim, lun_t lun) | |
347 | { | |
348 | switch (tskim->tm_cmnd) { | |
349 | case FCP_TM_TARGET_RESET: | |
350 | return BFA_TRUE; | |
351 | ||
352 | case FCP_TM_ABORT_TASK_SET: | |
353 | case FCP_TM_CLEAR_TASK_SET: | |
354 | case FCP_TM_LUN_RESET: | |
355 | case FCP_TM_CLEAR_ACA: | |
356 | return (tskim->lun == lun); | |
357 | ||
358 | default: | |
359 | bfa_assert(0); | |
360 | } | |
361 | ||
362 | return BFA_FALSE; | |
363 | } | |
364 | ||
365 | /** | |
366 | * Gather affected IO requests and task management commands. | |
367 | */ | |
368 | static void | |
369 | bfa_tskim_gather_ios(struct bfa_tskim_s *tskim) | |
370 | { | |
371 | struct bfa_itnim_s *itnim = tskim->itnim; | |
372 | struct bfa_ioim_s *ioim; | |
373 | struct list_head *qe, *qen; | |
374 | ||
375 | INIT_LIST_HEAD(&tskim->io_q); | |
376 | ||
377 | /** | |
378 | * Gather any active IO requests first. | |
379 | */ | |
380 | list_for_each_safe(qe, qen, &itnim->io_q) { | |
381 | ioim = (struct bfa_ioim_s *) qe; | |
382 | if (bfa_tskim_match_scope | |
383 | (tskim, bfa_cb_ioim_get_lun(ioim->dio))) { | |
384 | list_del(&ioim->qe); | |
385 | list_add_tail(&ioim->qe, &tskim->io_q); | |
386 | } | |
387 | } | |
388 | ||
389 | /** | |
390 | * Failback any pending IO requests immediately. | |
391 | */ | |
392 | list_for_each_safe(qe, qen, &itnim->pending_q) { | |
393 | ioim = (struct bfa_ioim_s *) qe; | |
394 | if (bfa_tskim_match_scope | |
395 | (tskim, bfa_cb_ioim_get_lun(ioim->dio))) { | |
396 | list_del(&ioim->qe); | |
397 | list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q); | |
398 | bfa_ioim_tov(ioim); | |
399 | } | |
400 | } | |
401 | } | |
402 | ||
403 | /** | |
404 | * IO cleanup completion | |
405 | */ | |
406 | static void | |
407 | bfa_tskim_cleanp_comp(void *tskim_cbarg) | |
408 | { | |
409 | struct bfa_tskim_s *tskim = tskim_cbarg; | |
410 | ||
411 | bfa_stats(tskim->itnim, tm_io_comps); | |
412 | bfa_sm_send_event(tskim, BFA_TSKIM_SM_IOS_DONE); | |
413 | } | |
414 | ||
415 | /** | |
416 | * Gather affected IO requests and task management commands. | |
417 | */ | |
418 | static void | |
419 | bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim) | |
420 | { | |
421 | struct bfa_ioim_s *ioim; | |
422 | struct list_head *qe, *qen; | |
423 | ||
424 | bfa_wc_init(&tskim->wc, bfa_tskim_cleanp_comp, tskim); | |
425 | ||
426 | list_for_each_safe(qe, qen, &tskim->io_q) { | |
427 | ioim = (struct bfa_ioim_s *) qe; | |
428 | bfa_wc_up(&tskim->wc); | |
429 | bfa_ioim_cleanup_tm(ioim, tskim); | |
430 | } | |
431 | ||
432 | bfa_wc_wait(&tskim->wc); | |
433 | } | |
434 | ||
435 | /** | |
436 | * Send task management request to firmware. | |
437 | */ | |
438 | static bfa_boolean_t | |
439 | bfa_tskim_send(struct bfa_tskim_s *tskim) | |
440 | { | |
441 | struct bfa_itnim_s *itnim = tskim->itnim; | |
442 | struct bfi_tskim_req_s *m; | |
443 | ||
444 | /** | |
445 | * check for room in queue to send request now | |
446 | */ | |
447 | m = bfa_reqq_next(tskim->bfa, itnim->reqq); | |
448 | if (!m) | |
449 | return BFA_FALSE; | |
450 | ||
451 | /** | |
452 | * build i/o request message next | |
453 | */ | |
454 | bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_TM_REQ, | |
455 | bfa_lpuid(tskim->bfa)); | |
456 | ||
457 | m->tsk_tag = bfa_os_htons(tskim->tsk_tag); | |
458 | m->itn_fhdl = tskim->itnim->rport->fw_handle; | |
459 | m->t_secs = tskim->tsecs; | |
460 | m->lun = tskim->lun; | |
461 | m->tm_flags = tskim->tm_cmnd; | |
462 | ||
463 | /** | |
464 | * queue I/O message to firmware | |
465 | */ | |
466 | bfa_reqq_produce(tskim->bfa, itnim->reqq); | |
467 | return BFA_TRUE; | |
468 | } | |
469 | ||
470 | /** | |
471 | * Send abort request to cleanup an active TM to firmware. | |
472 | */ | |
473 | static bfa_boolean_t | |
474 | bfa_tskim_send_abort(struct bfa_tskim_s *tskim) | |
475 | { | |
476 | struct bfa_itnim_s *itnim = tskim->itnim; | |
477 | struct bfi_tskim_abortreq_s *m; | |
478 | ||
479 | /** | |
480 | * check for room in queue to send request now | |
481 | */ | |
482 | m = bfa_reqq_next(tskim->bfa, itnim->reqq); | |
483 | if (!m) | |
484 | return BFA_FALSE; | |
485 | ||
486 | /** | |
487 | * build i/o request message next | |
488 | */ | |
489 | bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_ABORT_REQ, | |
490 | bfa_lpuid(tskim->bfa)); | |
491 | ||
492 | m->tsk_tag = bfa_os_htons(tskim->tsk_tag); | |
493 | ||
494 | /** | |
495 | * queue I/O message to firmware | |
496 | */ | |
497 | bfa_reqq_produce(tskim->bfa, itnim->reqq); | |
498 | return BFA_TRUE; | |
499 | } | |
500 | ||
501 | /** | |
502 | * Call to resume task management cmnd waiting for room in request queue. | |
503 | */ | |
504 | static void | |
505 | bfa_tskim_qresume(void *cbarg) | |
506 | { | |
507 | struct bfa_tskim_s *tskim = cbarg; | |
508 | ||
509 | bfa_fcpim_stats(tskim->fcpim, qresumes); | |
510 | bfa_stats(tskim->itnim, tm_qresumes); | |
511 | bfa_sm_send_event(tskim, BFA_TSKIM_SM_QRESUME); | |
512 | } | |
513 | ||
514 | /** | |
515 | * Cleanup IOs associated with a task mangement command on IOC failures. | |
516 | */ | |
517 | static void | |
518 | bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim) | |
519 | { | |
520 | struct bfa_ioim_s *ioim; | |
521 | struct list_head *qe, *qen; | |
522 | ||
523 | list_for_each_safe(qe, qen, &tskim->io_q) { | |
524 | ioim = (struct bfa_ioim_s *) qe; | |
525 | bfa_ioim_iocdisable(ioim); | |
526 | } | |
527 | } | |
528 | ||
529 | ||
530 | ||
531 | /** | |
532 | * bfa_tskim_friend | |
533 | */ | |
534 | ||
535 | /** | |
536 | * Notification on completions from related ioim. | |
537 | */ | |
538 | void | |
539 | bfa_tskim_iodone(struct bfa_tskim_s *tskim) | |
540 | { | |
541 | bfa_wc_down(&tskim->wc); | |
542 | } | |
543 | ||
544 | /** | |
545 | * Handle IOC h/w failure notification from itnim. | |
546 | */ | |
547 | void | |
548 | bfa_tskim_iocdisable(struct bfa_tskim_s *tskim) | |
549 | { | |
550 | tskim->notify = BFA_FALSE; | |
551 | bfa_stats(tskim->itnim, tm_iocdowns); | |
552 | bfa_sm_send_event(tskim, BFA_TSKIM_SM_HWFAIL); | |
553 | } | |
554 | ||
555 | /** | |
556 | * Cleanup TM command and associated IOs as part of ITNIM offline. | |
557 | */ | |
558 | void | |
559 | bfa_tskim_cleanup(struct bfa_tskim_s *tskim) | |
560 | { | |
561 | tskim->notify = BFA_TRUE; | |
562 | bfa_stats(tskim->itnim, tm_cleanups); | |
563 | bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP); | |
564 | } | |
565 | ||
566 | /** | |
567 | * Memory allocation and initialization. | |
568 | */ | |
569 | void | |
570 | bfa_tskim_attach(struct bfa_fcpim_mod_s *fcpim, struct bfa_meminfo_s *minfo) | |
571 | { | |
572 | struct bfa_tskim_s *tskim; | |
573 | u16 i; | |
574 | ||
575 | INIT_LIST_HEAD(&fcpim->tskim_free_q); | |
576 | ||
577 | tskim = (struct bfa_tskim_s *) bfa_meminfo_kva(minfo); | |
578 | fcpim->tskim_arr = tskim; | |
579 | ||
580 | for (i = 0; i < fcpim->num_tskim_reqs; i++, tskim++) { | |
581 | /* | |
582 | * initialize TSKIM | |
583 | */ | |
584 | bfa_os_memset(tskim, 0, sizeof(struct bfa_tskim_s)); | |
585 | tskim->tsk_tag = i; | |
586 | tskim->bfa = fcpim->bfa; | |
587 | tskim->fcpim = fcpim; | |
588 | tskim->notify = BFA_FALSE; | |
589 | bfa_reqq_winit(&tskim->reqq_wait, bfa_tskim_qresume, | |
590 | tskim); | |
591 | bfa_sm_set_state(tskim, bfa_tskim_sm_uninit); | |
592 | ||
593 | list_add_tail(&tskim->qe, &fcpim->tskim_free_q); | |
594 | } | |
595 | ||
596 | bfa_meminfo_kva(minfo) = (u8 *) tskim; | |
597 | } | |
598 | ||
599 | void | |
600 | bfa_tskim_detach(struct bfa_fcpim_mod_s *fcpim) | |
601 | { | |
602 | /** | |
603 | * @todo | |
604 | */ | |
605 | } | |
606 | ||
607 | void | |
608 | bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *m) | |
609 | { | |
610 | struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa); | |
611 | struct bfi_tskim_rsp_s *rsp = (struct bfi_tskim_rsp_s *) m; | |
612 | struct bfa_tskim_s *tskim; | |
613 | u16 tsk_tag = bfa_os_ntohs(rsp->tsk_tag); | |
614 | ||
615 | tskim = BFA_TSKIM_FROM_TAG(fcpim, tsk_tag); | |
616 | bfa_assert(tskim->tsk_tag == tsk_tag); | |
617 | ||
618 | tskim->tsk_status = rsp->tsk_status; | |
619 | ||
620 | /** | |
621 | * Firmware sends BFI_TSKIM_STS_ABORTED status for abort | |
622 | * requests. All other statuses are for normal completions. | |
623 | */ | |
624 | if (rsp->tsk_status == BFI_TSKIM_STS_ABORTED) { | |
625 | bfa_stats(tskim->itnim, tm_cleanup_comps); | |
626 | bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP_DONE); | |
627 | } else { | |
628 | bfa_stats(tskim->itnim, tm_fw_rsps); | |
629 | bfa_sm_send_event(tskim, BFA_TSKIM_SM_DONE); | |
630 | } | |
631 | } | |
632 | ||
633 | ||
634 | ||
635 | /** | |
636 | * bfa_tskim_api | |
637 | */ | |
638 | ||
639 | ||
640 | struct bfa_tskim_s * | |
641 | bfa_tskim_alloc(struct bfa_s *bfa, struct bfad_tskim_s *dtsk) | |
642 | { | |
643 | struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa); | |
644 | struct bfa_tskim_s *tskim; | |
645 | ||
646 | bfa_q_deq(&fcpim->tskim_free_q, &tskim); | |
647 | ||
648 | if (!tskim) | |
649 | bfa_fcpim_stats(fcpim, no_tskims); | |
650 | else | |
651 | tskim->dtsk = dtsk; | |
652 | ||
653 | return tskim; | |
654 | } | |
655 | ||
656 | void | |
657 | bfa_tskim_free(struct bfa_tskim_s *tskim) | |
658 | { | |
659 | bfa_assert(bfa_q_is_on_q_func(&tskim->itnim->tsk_q, &tskim->qe)); | |
660 | list_del(&tskim->qe); | |
661 | list_add_tail(&tskim->qe, &tskim->fcpim->tskim_free_q); | |
662 | } | |
663 | ||
664 | /** | |
665 | * Start a task management command. | |
666 | * | |
667 | * @param[in] tskim BFA task management command instance | |
668 | * @param[in] itnim i-t nexus for the task management command | |
669 | * @param[in] lun lun, if applicable | |
670 | * @param[in] tm_cmnd Task management command code. | |
671 | * @param[in] t_secs Timeout in seconds | |
672 | * | |
673 | * @return None. | |
674 | */ | |
675 | void | |
676 | bfa_tskim_start(struct bfa_tskim_s *tskim, struct bfa_itnim_s *itnim, lun_t lun, | |
677 | enum fcp_tm_cmnd tm_cmnd, u8 tsecs) | |
678 | { | |
679 | tskim->itnim = itnim; | |
680 | tskim->lun = lun; | |
681 | tskim->tm_cmnd = tm_cmnd; | |
682 | tskim->tsecs = tsecs; | |
683 | tskim->notify = BFA_FALSE; | |
684 | bfa_stats(itnim, tm_cmnds); | |
685 | ||
686 | list_add_tail(&tskim->qe, &itnim->tsk_q); | |
687 | bfa_sm_send_event(tskim, BFA_TSKIM_SM_START); | |
688 | } | |
689 | ||
690 |