Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 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 | */ |
Jing Huang | f8ceafd | 2009-09-25 12:29:54 -0700 | [diff] [blame] | 26 | #define bfa_tskim_qcomp(__tskim, __cbfn) do { \ |
| 27 | bfa_cb_queue((__tskim)->bfa, &(__tskim)->hcb_qe, \ |
| 28 | __cbfn, (__tskim)); \ |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 29 | bfa_tskim_notify_comp(__tskim); \ |
| 30 | } while (0) |
| 31 | |
Jing Huang | f8ceafd | 2009-09-25 12:29:54 -0700 | [diff] [blame] | 32 | #define bfa_tskim_notify_comp(__tskim) do { \ |
| 33 | if ((__tskim)->notify) \ |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 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: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame] | 113 | bfa_sm_fault(tskim->bfa, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 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: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame] | 149 | bfa_sm_fault(tskim->bfa, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 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: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame] | 181 | bfa_sm_fault(tskim->bfa, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 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: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame] | 210 | bfa_sm_fault(tskim->bfa, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 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: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame] | 245 | bfa_sm_fault(tskim->bfa, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 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: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame] | 280 | bfa_sm_fault(tskim->bfa, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 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: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame] | 306 | bfa_sm_fault(tskim->bfa, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 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 | |