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