1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc. 4 * Copyright (c) 2014- QLogic Corporation. 5 * All rights reserved 6 * www.qlogic.com 7 * 8 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter. 9 */ 10 11 #include "bfad_drv.h" 12 #include "bfa_modules.h" 13 14 BFA_TRC_FILE(HAL, FCPIM); 15 16 /* 17 * BFA ITNIM Related definitions 18 */ 19 static void bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim); 20 21 #define BFA_ITNIM_FROM_TAG(_fcpim, _tag) \ 22 (((_fcpim)->itnim_arr + ((_tag) & ((_fcpim)->num_itnims - 1)))) 23 24 #define bfa_fcpim_additn(__itnim) \ 25 list_add_tail(&(__itnim)->qe, &(__itnim)->fcpim->itnim_q) 26 #define bfa_fcpim_delitn(__itnim) do { \ 27 WARN_ON(!bfa_q_is_on_q(&(__itnim)->fcpim->itnim_q, __itnim)); \ 28 bfa_itnim_update_del_itn_stats(__itnim); \ 29 list_del(&(__itnim)->qe); \ 30 WARN_ON(!list_empty(&(__itnim)->io_q)); \ 31 WARN_ON(!list_empty(&(__itnim)->io_cleanup_q)); \ 32 WARN_ON(!list_empty(&(__itnim)->pending_q)); \ 33 } while (0) 34 35 #define bfa_itnim_online_cb(__itnim) do { \ 36 if ((__itnim)->bfa->fcs) \ 37 bfa_cb_itnim_online((__itnim)->ditn); \ 38 else { \ 39 bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \ 40 __bfa_cb_itnim_online, (__itnim)); \ 41 } \ 42 } while (0) 43 44 #define bfa_itnim_offline_cb(__itnim) do { \ 45 if ((__itnim)->bfa->fcs) \ 46 bfa_cb_itnim_offline((__itnim)->ditn); \ 47 else { \ 48 bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \ 49 __bfa_cb_itnim_offline, (__itnim)); \ 50 } \ 51 } while (0) 52 53 #define bfa_itnim_sler_cb(__itnim) do { \ 54 if ((__itnim)->bfa->fcs) \ 55 bfa_cb_itnim_sler((__itnim)->ditn); \ 56 else { \ 57 bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \ 58 __bfa_cb_itnim_sler, (__itnim)); \ 59 } \ 60 } while (0) 61 62 enum bfa_ioim_lm_ua_status { 63 BFA_IOIM_LM_UA_RESET = 0, 64 BFA_IOIM_LM_UA_SET = 1, 65 }; 66 67 /* 68 * BFA IOIM related definitions 69 */ 70 #define bfa_ioim_move_to_comp_q(__ioim) do { \ 71 list_del(&(__ioim)->qe); \ 72 list_add_tail(&(__ioim)->qe, &(__ioim)->fcpim->ioim_comp_q); \ 73 } while (0) 74 75 76 #define bfa_ioim_cb_profile_comp(__fcpim, __ioim) do { \ 77 if ((__fcpim)->profile_comp) \ 78 (__fcpim)->profile_comp(__ioim); \ 79 } while (0) 80 81 #define bfa_ioim_cb_profile_start(__fcpim, __ioim) do { \ 82 if ((__fcpim)->profile_start) \ 83 (__fcpim)->profile_start(__ioim); \ 84 } while (0) 85 86 87 /* 88 * BFA TSKIM related definitions 89 */ 90 91 /* 92 * task management completion handling 93 */ 94 #define bfa_tskim_qcomp(__tskim, __cbfn) do { \ 95 bfa_cb_queue((__tskim)->bfa, &(__tskim)->hcb_qe, __cbfn, (__tskim));\ 96 bfa_tskim_notify_comp(__tskim); \ 97 } while (0) 98 99 #define bfa_tskim_notify_comp(__tskim) do { \ 100 if ((__tskim)->notify) \ 101 bfa_itnim_tskdone((__tskim)->itnim); \ 102 } while (0) 103 104 105 /* 106 * forward declaration for BFA ITNIM functions 107 */ 108 static void bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s *itnim); 109 static bfa_boolean_t bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim); 110 static bfa_boolean_t bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim); 111 static void bfa_itnim_cleanp_comp(void *itnim_cbarg); 112 static void bfa_itnim_cleanup(struct bfa_itnim_s *itnim); 113 static void __bfa_cb_itnim_online(void *cbarg, bfa_boolean_t complete); 114 static void __bfa_cb_itnim_offline(void *cbarg, bfa_boolean_t complete); 115 static void __bfa_cb_itnim_sler(void *cbarg, bfa_boolean_t complete); 116 static void bfa_itnim_iotov_online(struct bfa_itnim_s *itnim); 117 static void bfa_itnim_iotov_cleanup(struct bfa_itnim_s *itnim); 118 static void bfa_itnim_iotov(void *itnim_arg); 119 static void bfa_itnim_iotov_start(struct bfa_itnim_s *itnim); 120 static void bfa_itnim_iotov_stop(struct bfa_itnim_s *itnim); 121 static void bfa_itnim_iotov_delete(struct bfa_itnim_s *itnim); 122 123 /* 124 * forward declaration of ITNIM state machine 125 */ 126 static void bfa_itnim_sm_uninit(struct bfa_itnim_s *itnim, 127 enum bfa_itnim_event event); 128 static void bfa_itnim_sm_created(struct bfa_itnim_s *itnim, 129 enum bfa_itnim_event event); 130 static void bfa_itnim_sm_fwcreate(struct bfa_itnim_s *itnim, 131 enum bfa_itnim_event event); 132 static void bfa_itnim_sm_delete_pending(struct bfa_itnim_s *itnim, 133 enum bfa_itnim_event event); 134 static void bfa_itnim_sm_online(struct bfa_itnim_s *itnim, 135 enum bfa_itnim_event event); 136 static void bfa_itnim_sm_sler(struct bfa_itnim_s *itnim, 137 enum bfa_itnim_event event); 138 static void bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s *itnim, 139 enum bfa_itnim_event event); 140 static void bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s *itnim, 141 enum bfa_itnim_event event); 142 static void bfa_itnim_sm_fwdelete(struct bfa_itnim_s *itnim, 143 enum bfa_itnim_event event); 144 static void bfa_itnim_sm_offline(struct bfa_itnim_s *itnim, 145 enum bfa_itnim_event event); 146 static void bfa_itnim_sm_iocdisable(struct bfa_itnim_s *itnim, 147 enum bfa_itnim_event event); 148 static void bfa_itnim_sm_deleting(struct bfa_itnim_s *itnim, 149 enum bfa_itnim_event event); 150 static void bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s *itnim, 151 enum bfa_itnim_event event); 152 static void bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s *itnim, 153 enum bfa_itnim_event event); 154 static void bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s *itnim, 155 enum bfa_itnim_event event); 156 157 /* 158 * forward declaration for BFA IOIM functions 159 */ 160 static bfa_boolean_t bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim); 161 static bfa_boolean_t bfa_ioim_sgpg_alloc(struct bfa_ioim_s *ioim); 162 static bfa_boolean_t bfa_ioim_send_abort(struct bfa_ioim_s *ioim); 163 static void bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim); 164 static void __bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete); 165 static void __bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete); 166 static void __bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete); 167 static void __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete); 168 static void __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete); 169 static bfa_boolean_t bfa_ioim_is_abortable(struct bfa_ioim_s *ioim); 170 171 /* 172 * forward declaration of BFA IO state machine 173 */ 174 static void bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim, 175 enum bfa_ioim_event event); 176 static void bfa_ioim_sm_sgalloc(struct bfa_ioim_s *ioim, 177 enum bfa_ioim_event event); 178 static void bfa_ioim_sm_active(struct bfa_ioim_s *ioim, 179 enum bfa_ioim_event event); 180 static void bfa_ioim_sm_abort(struct bfa_ioim_s *ioim, 181 enum bfa_ioim_event event); 182 static void bfa_ioim_sm_cleanup(struct bfa_ioim_s *ioim, 183 enum bfa_ioim_event event); 184 static void bfa_ioim_sm_qfull(struct bfa_ioim_s *ioim, 185 enum bfa_ioim_event event); 186 static void bfa_ioim_sm_abort_qfull(struct bfa_ioim_s *ioim, 187 enum bfa_ioim_event event); 188 static void bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s *ioim, 189 enum bfa_ioim_event event); 190 static void bfa_ioim_sm_hcb(struct bfa_ioim_s *ioim, 191 enum bfa_ioim_event event); 192 static void bfa_ioim_sm_hcb_free(struct bfa_ioim_s *ioim, 193 enum bfa_ioim_event event); 194 static void bfa_ioim_sm_resfree(struct bfa_ioim_s *ioim, 195 enum bfa_ioim_event event); 196 static void bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s *ioim, 197 enum bfa_ioim_event event); 198 /* 199 * forward declaration for BFA TSKIM functions 200 */ 201 static void __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete); 202 static void __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete); 203 static bfa_boolean_t bfa_tskim_match_scope(struct bfa_tskim_s *tskim, 204 struct scsi_lun lun); 205 static void bfa_tskim_gather_ios(struct bfa_tskim_s *tskim); 206 static void bfa_tskim_cleanp_comp(void *tskim_cbarg); 207 static void bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim); 208 static bfa_boolean_t bfa_tskim_send(struct bfa_tskim_s *tskim); 209 static bfa_boolean_t bfa_tskim_send_abort(struct bfa_tskim_s *tskim); 210 static void bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim); 211 212 /* 213 * forward declaration of BFA TSKIM state machine 214 */ 215 static void bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, 216 enum bfa_tskim_event event); 217 static void bfa_tskim_sm_active(struct bfa_tskim_s *tskim, 218 enum bfa_tskim_event event); 219 static void bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, 220 enum bfa_tskim_event event); 221 static void bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, 222 enum bfa_tskim_event event); 223 static void bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, 224 enum bfa_tskim_event event); 225 static void bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim, 226 enum bfa_tskim_event event); 227 static void bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, 228 enum bfa_tskim_event event); 229 /* 230 * BFA FCP Initiator Mode module 231 */ 232 233 /* 234 * Compute and return memory needed by FCP(im) module. 235 */ 236 static void bfa_fcpim_meminfo(struct bfa_iocfc_cfg_s * cfg,u32 * km_len)237 bfa_fcpim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len) 238 { 239 bfa_itnim_meminfo(cfg, km_len); 240 241 /* 242 * IO memory 243 */ 244 *km_len += cfg->fwcfg.num_ioim_reqs * 245 (sizeof(struct bfa_ioim_s) + sizeof(struct bfa_ioim_sp_s)); 246 247 /* 248 * task management command memory 249 */ 250 if (cfg->fwcfg.num_tskim_reqs < BFA_TSKIM_MIN) 251 cfg->fwcfg.num_tskim_reqs = BFA_TSKIM_MIN; 252 *km_len += cfg->fwcfg.num_tskim_reqs * sizeof(struct bfa_tskim_s); 253 } 254 255 256 static void bfa_fcpim_attach(struct bfa_fcp_mod_s * fcp,void * bfad,struct bfa_iocfc_cfg_s * cfg,struct bfa_pcidev_s * pcidev)257 bfa_fcpim_attach(struct bfa_fcp_mod_s *fcp, void *bfad, 258 struct bfa_iocfc_cfg_s *cfg, struct bfa_pcidev_s *pcidev) 259 { 260 struct bfa_fcpim_s *fcpim = &fcp->fcpim; 261 struct bfa_s *bfa = fcp->bfa; 262 263 bfa_trc(bfa, cfg->drvcfg.path_tov); 264 bfa_trc(bfa, cfg->fwcfg.num_rports); 265 bfa_trc(bfa, cfg->fwcfg.num_ioim_reqs); 266 bfa_trc(bfa, cfg->fwcfg.num_tskim_reqs); 267 268 fcpim->fcp = fcp; 269 fcpim->bfa = bfa; 270 fcpim->num_itnims = cfg->fwcfg.num_rports; 271 fcpim->num_tskim_reqs = cfg->fwcfg.num_tskim_reqs; 272 fcpim->path_tov = cfg->drvcfg.path_tov; 273 fcpim->delay_comp = cfg->drvcfg.delay_comp; 274 fcpim->profile_comp = NULL; 275 fcpim->profile_start = NULL; 276 277 bfa_itnim_attach(fcpim); 278 bfa_tskim_attach(fcpim); 279 bfa_ioim_attach(fcpim); 280 } 281 282 void bfa_fcpim_iocdisable(struct bfa_fcp_mod_s * fcp)283 bfa_fcpim_iocdisable(struct bfa_fcp_mod_s *fcp) 284 { 285 struct bfa_fcpim_s *fcpim = &fcp->fcpim; 286 struct bfa_itnim_s *itnim; 287 struct list_head *qe, *qen; 288 289 /* Enqueue unused ioim resources to free_q */ 290 list_splice_tail_init(&fcpim->tskim_unused_q, &fcpim->tskim_free_q); 291 292 list_for_each_safe(qe, qen, &fcpim->itnim_q) { 293 itnim = (struct bfa_itnim_s *) qe; 294 bfa_itnim_iocdisable(itnim); 295 } 296 } 297 298 void bfa_fcpim_path_tov_set(struct bfa_s * bfa,u16 path_tov)299 bfa_fcpim_path_tov_set(struct bfa_s *bfa, u16 path_tov) 300 { 301 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 302 303 fcpim->path_tov = path_tov * 1000; 304 if (fcpim->path_tov > BFA_FCPIM_PATHTOV_MAX) 305 fcpim->path_tov = BFA_FCPIM_PATHTOV_MAX; 306 } 307 308 u16 bfa_fcpim_path_tov_get(struct bfa_s * bfa)309 bfa_fcpim_path_tov_get(struct bfa_s *bfa) 310 { 311 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 312 313 return fcpim->path_tov / 1000; 314 } 315 316 #define bfa_fcpim_add_iostats(__l, __r, __stats) \ 317 (__l->__stats += __r->__stats) 318 319 void bfa_fcpim_add_stats(struct bfa_itnim_iostats_s * lstats,struct bfa_itnim_iostats_s * rstats)320 bfa_fcpim_add_stats(struct bfa_itnim_iostats_s *lstats, 321 struct bfa_itnim_iostats_s *rstats) 322 { 323 bfa_fcpim_add_iostats(lstats, rstats, total_ios); 324 bfa_fcpim_add_iostats(lstats, rstats, qresumes); 325 bfa_fcpim_add_iostats(lstats, rstats, no_iotags); 326 bfa_fcpim_add_iostats(lstats, rstats, io_aborts); 327 bfa_fcpim_add_iostats(lstats, rstats, no_tskims); 328 bfa_fcpim_add_iostats(lstats, rstats, iocomp_ok); 329 bfa_fcpim_add_iostats(lstats, rstats, iocomp_underrun); 330 bfa_fcpim_add_iostats(lstats, rstats, iocomp_overrun); 331 bfa_fcpim_add_iostats(lstats, rstats, iocomp_aborted); 332 bfa_fcpim_add_iostats(lstats, rstats, iocomp_timedout); 333 bfa_fcpim_add_iostats(lstats, rstats, iocom_nexus_abort); 334 bfa_fcpim_add_iostats(lstats, rstats, iocom_proto_err); 335 bfa_fcpim_add_iostats(lstats, rstats, iocom_dif_err); 336 bfa_fcpim_add_iostats(lstats, rstats, iocom_sqer_needed); 337 bfa_fcpim_add_iostats(lstats, rstats, iocom_res_free); 338 bfa_fcpim_add_iostats(lstats, rstats, iocom_hostabrts); 339 bfa_fcpim_add_iostats(lstats, rstats, iocom_utags); 340 bfa_fcpim_add_iostats(lstats, rstats, io_cleanups); 341 bfa_fcpim_add_iostats(lstats, rstats, io_tmaborts); 342 bfa_fcpim_add_iostats(lstats, rstats, onlines); 343 bfa_fcpim_add_iostats(lstats, rstats, offlines); 344 bfa_fcpim_add_iostats(lstats, rstats, creates); 345 bfa_fcpim_add_iostats(lstats, rstats, deletes); 346 bfa_fcpim_add_iostats(lstats, rstats, create_comps); 347 bfa_fcpim_add_iostats(lstats, rstats, delete_comps); 348 bfa_fcpim_add_iostats(lstats, rstats, sler_events); 349 bfa_fcpim_add_iostats(lstats, rstats, fw_create); 350 bfa_fcpim_add_iostats(lstats, rstats, fw_delete); 351 bfa_fcpim_add_iostats(lstats, rstats, ioc_disabled); 352 bfa_fcpim_add_iostats(lstats, rstats, cleanup_comps); 353 bfa_fcpim_add_iostats(lstats, rstats, tm_cmnds); 354 bfa_fcpim_add_iostats(lstats, rstats, tm_fw_rsps); 355 bfa_fcpim_add_iostats(lstats, rstats, tm_success); 356 bfa_fcpim_add_iostats(lstats, rstats, tm_failures); 357 bfa_fcpim_add_iostats(lstats, rstats, tm_io_comps); 358 bfa_fcpim_add_iostats(lstats, rstats, tm_qresumes); 359 bfa_fcpim_add_iostats(lstats, rstats, tm_iocdowns); 360 bfa_fcpim_add_iostats(lstats, rstats, tm_cleanups); 361 bfa_fcpim_add_iostats(lstats, rstats, tm_cleanup_comps); 362 bfa_fcpim_add_iostats(lstats, rstats, io_comps); 363 bfa_fcpim_add_iostats(lstats, rstats, input_reqs); 364 bfa_fcpim_add_iostats(lstats, rstats, output_reqs); 365 bfa_fcpim_add_iostats(lstats, rstats, rd_throughput); 366 bfa_fcpim_add_iostats(lstats, rstats, wr_throughput); 367 } 368 369 bfa_status_t bfa_fcpim_port_iostats(struct bfa_s * bfa,struct bfa_itnim_iostats_s * stats,u8 lp_tag)370 bfa_fcpim_port_iostats(struct bfa_s *bfa, 371 struct bfa_itnim_iostats_s *stats, u8 lp_tag) 372 { 373 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 374 struct list_head *qe, *qen; 375 struct bfa_itnim_s *itnim; 376 377 /* accumulate IO stats from itnim */ 378 memset(stats, 0, sizeof(struct bfa_itnim_iostats_s)); 379 list_for_each_safe(qe, qen, &fcpim->itnim_q) { 380 itnim = (struct bfa_itnim_s *) qe; 381 if (itnim->rport->rport_info.lp_tag != lp_tag) 382 continue; 383 bfa_fcpim_add_stats(stats, &(itnim->stats)); 384 } 385 return BFA_STATUS_OK; 386 } 387 388 static void bfa_ioim_profile_comp(struct bfa_ioim_s * ioim)389 bfa_ioim_profile_comp(struct bfa_ioim_s *ioim) 390 { 391 struct bfa_itnim_latency_s *io_lat = 392 &(ioim->itnim->ioprofile.io_latency); 393 u32 val, idx; 394 395 val = (u32)(jiffies - ioim->start_time); 396 idx = bfa_ioim_get_index(scsi_bufflen((struct scsi_cmnd *)ioim->dio)); 397 bfa_itnim_ioprofile_update(ioim->itnim, idx); 398 399 io_lat->count[idx]++; 400 io_lat->min[idx] = (io_lat->min[idx] < val) ? io_lat->min[idx] : val; 401 io_lat->max[idx] = (io_lat->max[idx] > val) ? io_lat->max[idx] : val; 402 io_lat->avg[idx] += val; 403 } 404 405 static void bfa_ioim_profile_start(struct bfa_ioim_s * ioim)406 bfa_ioim_profile_start(struct bfa_ioim_s *ioim) 407 { 408 ioim->start_time = jiffies; 409 } 410 411 bfa_status_t bfa_fcpim_profile_on(struct bfa_s * bfa,time64_t time)412 bfa_fcpim_profile_on(struct bfa_s *bfa, time64_t time) 413 { 414 struct bfa_itnim_s *itnim; 415 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 416 struct list_head *qe, *qen; 417 418 /* accumulate IO stats from itnim */ 419 list_for_each_safe(qe, qen, &fcpim->itnim_q) { 420 itnim = (struct bfa_itnim_s *) qe; 421 bfa_itnim_clear_stats(itnim); 422 } 423 fcpim->io_profile = BFA_TRUE; 424 fcpim->io_profile_start_time = time; 425 fcpim->profile_comp = bfa_ioim_profile_comp; 426 fcpim->profile_start = bfa_ioim_profile_start; 427 return BFA_STATUS_OK; 428 } 429 430 bfa_status_t bfa_fcpim_profile_off(struct bfa_s * bfa)431 bfa_fcpim_profile_off(struct bfa_s *bfa) 432 { 433 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 434 fcpim->io_profile = BFA_FALSE; 435 fcpim->io_profile_start_time = 0; 436 fcpim->profile_comp = NULL; 437 fcpim->profile_start = NULL; 438 return BFA_STATUS_OK; 439 } 440 441 u16 bfa_fcpim_qdepth_get(struct bfa_s * bfa)442 bfa_fcpim_qdepth_get(struct bfa_s *bfa) 443 { 444 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 445 446 return fcpim->q_depth; 447 } 448 449 /* 450 * BFA ITNIM module state machine functions 451 */ 452 453 /* 454 * Beginning/unallocated state - no events expected. 455 */ 456 static void bfa_itnim_sm_uninit(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)457 bfa_itnim_sm_uninit(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) 458 { 459 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 460 bfa_trc(itnim->bfa, event); 461 462 switch (event) { 463 case BFA_ITNIM_SM_CREATE: 464 bfa_sm_set_state(itnim, bfa_itnim_sm_created); 465 itnim->is_online = BFA_FALSE; 466 bfa_fcpim_additn(itnim); 467 break; 468 469 default: 470 bfa_sm_fault(itnim->bfa, event); 471 } 472 } 473 474 /* 475 * Beginning state, only online event expected. 476 */ 477 static void bfa_itnim_sm_created(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)478 bfa_itnim_sm_created(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) 479 { 480 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 481 bfa_trc(itnim->bfa, event); 482 483 switch (event) { 484 case BFA_ITNIM_SM_ONLINE: 485 if (bfa_itnim_send_fwcreate(itnim)) 486 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate); 487 else 488 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull); 489 break; 490 491 case BFA_ITNIM_SM_DELETE: 492 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); 493 bfa_fcpim_delitn(itnim); 494 break; 495 496 case BFA_ITNIM_SM_HWFAIL: 497 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); 498 break; 499 500 default: 501 bfa_sm_fault(itnim->bfa, event); 502 } 503 } 504 505 /* 506 * Waiting for itnim create response from firmware. 507 */ 508 static void bfa_itnim_sm_fwcreate(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)509 bfa_itnim_sm_fwcreate(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) 510 { 511 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 512 bfa_trc(itnim->bfa, event); 513 514 switch (event) { 515 case BFA_ITNIM_SM_FWRSP: 516 bfa_sm_set_state(itnim, bfa_itnim_sm_online); 517 itnim->is_online = BFA_TRUE; 518 bfa_itnim_iotov_online(itnim); 519 bfa_itnim_online_cb(itnim); 520 break; 521 522 case BFA_ITNIM_SM_DELETE: 523 bfa_sm_set_state(itnim, bfa_itnim_sm_delete_pending); 524 break; 525 526 case BFA_ITNIM_SM_OFFLINE: 527 if (bfa_itnim_send_fwdelete(itnim)) 528 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete); 529 else 530 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete_qfull); 531 break; 532 533 case BFA_ITNIM_SM_HWFAIL: 534 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); 535 break; 536 537 default: 538 bfa_sm_fault(itnim->bfa, event); 539 } 540 } 541 542 static void bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)543 bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s *itnim, 544 enum bfa_itnim_event event) 545 { 546 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 547 bfa_trc(itnim->bfa, event); 548 549 switch (event) { 550 case BFA_ITNIM_SM_QRESUME: 551 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate); 552 bfa_itnim_send_fwcreate(itnim); 553 break; 554 555 case BFA_ITNIM_SM_DELETE: 556 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); 557 bfa_reqq_wcancel(&itnim->reqq_wait); 558 bfa_fcpim_delitn(itnim); 559 break; 560 561 case BFA_ITNIM_SM_OFFLINE: 562 bfa_sm_set_state(itnim, bfa_itnim_sm_offline); 563 bfa_reqq_wcancel(&itnim->reqq_wait); 564 bfa_itnim_offline_cb(itnim); 565 break; 566 567 case BFA_ITNIM_SM_HWFAIL: 568 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); 569 bfa_reqq_wcancel(&itnim->reqq_wait); 570 break; 571 572 default: 573 bfa_sm_fault(itnim->bfa, event); 574 } 575 } 576 577 /* 578 * Waiting for itnim create response from firmware, a delete is pending. 579 */ 580 static void bfa_itnim_sm_delete_pending(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)581 bfa_itnim_sm_delete_pending(struct bfa_itnim_s *itnim, 582 enum bfa_itnim_event event) 583 { 584 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 585 bfa_trc(itnim->bfa, event); 586 587 switch (event) { 588 case BFA_ITNIM_SM_FWRSP: 589 if (bfa_itnim_send_fwdelete(itnim)) 590 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting); 591 else 592 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull); 593 break; 594 595 case BFA_ITNIM_SM_HWFAIL: 596 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); 597 bfa_fcpim_delitn(itnim); 598 break; 599 600 default: 601 bfa_sm_fault(itnim->bfa, event); 602 } 603 } 604 605 /* 606 * Online state - normal parking state. 607 */ 608 static void bfa_itnim_sm_online(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)609 bfa_itnim_sm_online(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) 610 { 611 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 612 bfa_trc(itnim->bfa, event); 613 614 switch (event) { 615 case BFA_ITNIM_SM_OFFLINE: 616 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_offline); 617 itnim->is_online = BFA_FALSE; 618 bfa_itnim_iotov_start(itnim); 619 bfa_itnim_cleanup(itnim); 620 break; 621 622 case BFA_ITNIM_SM_DELETE: 623 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete); 624 itnim->is_online = BFA_FALSE; 625 bfa_itnim_cleanup(itnim); 626 break; 627 628 case BFA_ITNIM_SM_SLER: 629 bfa_sm_set_state(itnim, bfa_itnim_sm_sler); 630 itnim->is_online = BFA_FALSE; 631 bfa_itnim_iotov_start(itnim); 632 bfa_itnim_sler_cb(itnim); 633 break; 634 635 case BFA_ITNIM_SM_HWFAIL: 636 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); 637 itnim->is_online = BFA_FALSE; 638 bfa_itnim_iotov_start(itnim); 639 bfa_itnim_iocdisable_cleanup(itnim); 640 break; 641 642 default: 643 bfa_sm_fault(itnim->bfa, event); 644 } 645 } 646 647 /* 648 * Second level error recovery need. 649 */ 650 static void bfa_itnim_sm_sler(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)651 bfa_itnim_sm_sler(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) 652 { 653 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 654 bfa_trc(itnim->bfa, event); 655 656 switch (event) { 657 case BFA_ITNIM_SM_OFFLINE: 658 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_offline); 659 bfa_itnim_cleanup(itnim); 660 break; 661 662 case BFA_ITNIM_SM_DELETE: 663 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete); 664 bfa_itnim_cleanup(itnim); 665 bfa_itnim_iotov_delete(itnim); 666 break; 667 668 case BFA_ITNIM_SM_HWFAIL: 669 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); 670 bfa_itnim_iocdisable_cleanup(itnim); 671 break; 672 673 default: 674 bfa_sm_fault(itnim->bfa, event); 675 } 676 } 677 678 /* 679 * Going offline. Waiting for active IO cleanup. 680 */ 681 static void bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)682 bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s *itnim, 683 enum bfa_itnim_event event) 684 { 685 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 686 bfa_trc(itnim->bfa, event); 687 688 switch (event) { 689 case BFA_ITNIM_SM_CLEANUP: 690 if (bfa_itnim_send_fwdelete(itnim)) 691 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete); 692 else 693 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete_qfull); 694 break; 695 696 case BFA_ITNIM_SM_DELETE: 697 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete); 698 bfa_itnim_iotov_delete(itnim); 699 break; 700 701 case BFA_ITNIM_SM_HWFAIL: 702 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); 703 bfa_itnim_iocdisable_cleanup(itnim); 704 bfa_itnim_offline_cb(itnim); 705 break; 706 707 case BFA_ITNIM_SM_SLER: 708 break; 709 710 default: 711 bfa_sm_fault(itnim->bfa, event); 712 } 713 } 714 715 /* 716 * Deleting itnim. Waiting for active IO cleanup. 717 */ 718 static void bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)719 bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s *itnim, 720 enum bfa_itnim_event event) 721 { 722 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 723 bfa_trc(itnim->bfa, event); 724 725 switch (event) { 726 case BFA_ITNIM_SM_CLEANUP: 727 if (bfa_itnim_send_fwdelete(itnim)) 728 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting); 729 else 730 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull); 731 break; 732 733 case BFA_ITNIM_SM_HWFAIL: 734 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); 735 bfa_itnim_iocdisable_cleanup(itnim); 736 break; 737 738 default: 739 bfa_sm_fault(itnim->bfa, event); 740 } 741 } 742 743 /* 744 * Rport offline. Fimrware itnim is being deleted - awaiting f/w response. 745 */ 746 static void bfa_itnim_sm_fwdelete(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)747 bfa_itnim_sm_fwdelete(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) 748 { 749 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 750 bfa_trc(itnim->bfa, event); 751 752 switch (event) { 753 case BFA_ITNIM_SM_FWRSP: 754 bfa_sm_set_state(itnim, bfa_itnim_sm_offline); 755 bfa_itnim_offline_cb(itnim); 756 break; 757 758 case BFA_ITNIM_SM_DELETE: 759 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting); 760 break; 761 762 case BFA_ITNIM_SM_HWFAIL: 763 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); 764 bfa_itnim_offline_cb(itnim); 765 break; 766 767 default: 768 bfa_sm_fault(itnim->bfa, event); 769 } 770 } 771 772 static void bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)773 bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s *itnim, 774 enum bfa_itnim_event event) 775 { 776 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 777 bfa_trc(itnim->bfa, event); 778 779 switch (event) { 780 case BFA_ITNIM_SM_QRESUME: 781 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete); 782 bfa_itnim_send_fwdelete(itnim); 783 break; 784 785 case BFA_ITNIM_SM_DELETE: 786 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull); 787 break; 788 789 case BFA_ITNIM_SM_HWFAIL: 790 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); 791 bfa_reqq_wcancel(&itnim->reqq_wait); 792 bfa_itnim_offline_cb(itnim); 793 break; 794 795 default: 796 bfa_sm_fault(itnim->bfa, event); 797 } 798 } 799 800 /* 801 * Offline state. 802 */ 803 static void bfa_itnim_sm_offline(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)804 bfa_itnim_sm_offline(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) 805 { 806 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 807 bfa_trc(itnim->bfa, event); 808 809 switch (event) { 810 case BFA_ITNIM_SM_DELETE: 811 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); 812 bfa_itnim_iotov_delete(itnim); 813 bfa_fcpim_delitn(itnim); 814 break; 815 816 case BFA_ITNIM_SM_ONLINE: 817 if (bfa_itnim_send_fwcreate(itnim)) 818 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate); 819 else 820 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull); 821 break; 822 823 case BFA_ITNIM_SM_HWFAIL: 824 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable); 825 break; 826 827 default: 828 bfa_sm_fault(itnim->bfa, event); 829 } 830 } 831 832 static void bfa_itnim_sm_iocdisable(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)833 bfa_itnim_sm_iocdisable(struct bfa_itnim_s *itnim, 834 enum bfa_itnim_event event) 835 { 836 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 837 bfa_trc(itnim->bfa, event); 838 839 switch (event) { 840 case BFA_ITNIM_SM_DELETE: 841 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); 842 bfa_itnim_iotov_delete(itnim); 843 bfa_fcpim_delitn(itnim); 844 break; 845 846 case BFA_ITNIM_SM_OFFLINE: 847 bfa_itnim_offline_cb(itnim); 848 break; 849 850 case BFA_ITNIM_SM_ONLINE: 851 if (bfa_itnim_send_fwcreate(itnim)) 852 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate); 853 else 854 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull); 855 break; 856 857 case BFA_ITNIM_SM_HWFAIL: 858 break; 859 860 default: 861 bfa_sm_fault(itnim->bfa, event); 862 } 863 } 864 865 /* 866 * Itnim is deleted, waiting for firmware response to delete. 867 */ 868 static void bfa_itnim_sm_deleting(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)869 bfa_itnim_sm_deleting(struct bfa_itnim_s *itnim, enum bfa_itnim_event event) 870 { 871 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 872 bfa_trc(itnim->bfa, event); 873 874 switch (event) { 875 case BFA_ITNIM_SM_FWRSP: 876 case BFA_ITNIM_SM_HWFAIL: 877 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); 878 bfa_fcpim_delitn(itnim); 879 break; 880 881 default: 882 bfa_sm_fault(itnim->bfa, event); 883 } 884 } 885 886 static void bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)887 bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s *itnim, 888 enum bfa_itnim_event event) 889 { 890 bfa_trc(itnim->bfa, itnim->rport->rport_tag); 891 bfa_trc(itnim->bfa, event); 892 893 switch (event) { 894 case BFA_ITNIM_SM_QRESUME: 895 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting); 896 bfa_itnim_send_fwdelete(itnim); 897 break; 898 899 case BFA_ITNIM_SM_HWFAIL: 900 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); 901 bfa_reqq_wcancel(&itnim->reqq_wait); 902 bfa_fcpim_delitn(itnim); 903 break; 904 905 default: 906 bfa_sm_fault(itnim->bfa, event); 907 } 908 } 909 910 /* 911 * Initiate cleanup of all IOs on an IOC failure. 912 */ 913 static void bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s * itnim)914 bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s *itnim) 915 { 916 struct bfa_tskim_s *tskim; 917 struct bfa_ioim_s *ioim; 918 struct list_head *qe, *qen; 919 920 list_for_each_safe(qe, qen, &itnim->tsk_q) { 921 tskim = (struct bfa_tskim_s *) qe; 922 bfa_tskim_iocdisable(tskim); 923 } 924 925 list_for_each_safe(qe, qen, &itnim->io_q) { 926 ioim = (struct bfa_ioim_s *) qe; 927 bfa_ioim_iocdisable(ioim); 928 } 929 930 /* 931 * For IO request in pending queue, we pretend an early timeout. 932 */ 933 list_for_each_safe(qe, qen, &itnim->pending_q) { 934 ioim = (struct bfa_ioim_s *) qe; 935 bfa_ioim_tov(ioim); 936 } 937 938 list_for_each_safe(qe, qen, &itnim->io_cleanup_q) { 939 ioim = (struct bfa_ioim_s *) qe; 940 bfa_ioim_iocdisable(ioim); 941 } 942 } 943 944 /* 945 * IO cleanup completion 946 */ 947 static void bfa_itnim_cleanp_comp(void * itnim_cbarg)948 bfa_itnim_cleanp_comp(void *itnim_cbarg) 949 { 950 struct bfa_itnim_s *itnim = itnim_cbarg; 951 952 bfa_stats(itnim, cleanup_comps); 953 bfa_sm_send_event(itnim, BFA_ITNIM_SM_CLEANUP); 954 } 955 956 /* 957 * Initiate cleanup of all IOs. 958 */ 959 static void bfa_itnim_cleanup(struct bfa_itnim_s * itnim)960 bfa_itnim_cleanup(struct bfa_itnim_s *itnim) 961 { 962 struct bfa_ioim_s *ioim; 963 struct bfa_tskim_s *tskim; 964 struct list_head *qe, *qen; 965 966 bfa_wc_init(&itnim->wc, bfa_itnim_cleanp_comp, itnim); 967 968 list_for_each_safe(qe, qen, &itnim->io_q) { 969 ioim = (struct bfa_ioim_s *) qe; 970 971 /* 972 * Move IO to a cleanup queue from active queue so that a later 973 * TM will not pickup this IO. 974 */ 975 list_del(&ioim->qe); 976 list_add_tail(&ioim->qe, &itnim->io_cleanup_q); 977 978 bfa_wc_up(&itnim->wc); 979 bfa_ioim_cleanup(ioim); 980 } 981 982 list_for_each_safe(qe, qen, &itnim->tsk_q) { 983 tskim = (struct bfa_tskim_s *) qe; 984 bfa_wc_up(&itnim->wc); 985 bfa_tskim_cleanup(tskim); 986 } 987 988 bfa_wc_wait(&itnim->wc); 989 } 990 991 static void __bfa_cb_itnim_online(void * cbarg,bfa_boolean_t complete)992 __bfa_cb_itnim_online(void *cbarg, bfa_boolean_t complete) 993 { 994 struct bfa_itnim_s *itnim = cbarg; 995 996 if (complete) 997 bfa_cb_itnim_online(itnim->ditn); 998 } 999 1000 static void __bfa_cb_itnim_offline(void * cbarg,bfa_boolean_t complete)1001 __bfa_cb_itnim_offline(void *cbarg, bfa_boolean_t complete) 1002 { 1003 struct bfa_itnim_s *itnim = cbarg; 1004 1005 if (complete) 1006 bfa_cb_itnim_offline(itnim->ditn); 1007 } 1008 1009 static void __bfa_cb_itnim_sler(void * cbarg,bfa_boolean_t complete)1010 __bfa_cb_itnim_sler(void *cbarg, bfa_boolean_t complete) 1011 { 1012 struct bfa_itnim_s *itnim = cbarg; 1013 1014 if (complete) 1015 bfa_cb_itnim_sler(itnim->ditn); 1016 } 1017 1018 /* 1019 * Call to resume any I/O requests waiting for room in request queue. 1020 */ 1021 static void bfa_itnim_qresume(void * cbarg)1022 bfa_itnim_qresume(void *cbarg) 1023 { 1024 struct bfa_itnim_s *itnim = cbarg; 1025 1026 bfa_sm_send_event(itnim, BFA_ITNIM_SM_QRESUME); 1027 } 1028 1029 /* 1030 * bfa_itnim_public 1031 */ 1032 1033 void bfa_itnim_iodone(struct bfa_itnim_s * itnim)1034 bfa_itnim_iodone(struct bfa_itnim_s *itnim) 1035 { 1036 bfa_wc_down(&itnim->wc); 1037 } 1038 1039 void bfa_itnim_tskdone(struct bfa_itnim_s * itnim)1040 bfa_itnim_tskdone(struct bfa_itnim_s *itnim) 1041 { 1042 bfa_wc_down(&itnim->wc); 1043 } 1044 1045 void bfa_itnim_meminfo(struct bfa_iocfc_cfg_s * cfg,u32 * km_len)1046 bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len) 1047 { 1048 /* 1049 * ITN memory 1050 */ 1051 *km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itnim_s); 1052 } 1053 1054 void bfa_itnim_attach(struct bfa_fcpim_s * fcpim)1055 bfa_itnim_attach(struct bfa_fcpim_s *fcpim) 1056 { 1057 struct bfa_s *bfa = fcpim->bfa; 1058 struct bfa_fcp_mod_s *fcp = fcpim->fcp; 1059 struct bfa_itnim_s *itnim; 1060 int i, j; 1061 1062 INIT_LIST_HEAD(&fcpim->itnim_q); 1063 1064 itnim = (struct bfa_itnim_s *) bfa_mem_kva_curp(fcp); 1065 fcpim->itnim_arr = itnim; 1066 1067 for (i = 0; i < fcpim->num_itnims; i++, itnim++) { 1068 memset(itnim, 0, sizeof(struct bfa_itnim_s)); 1069 itnim->bfa = bfa; 1070 itnim->fcpim = fcpim; 1071 itnim->reqq = BFA_REQQ_QOS_LO; 1072 itnim->rport = BFA_RPORT_FROM_TAG(bfa, i); 1073 itnim->iotov_active = BFA_FALSE; 1074 bfa_reqq_winit(&itnim->reqq_wait, bfa_itnim_qresume, itnim); 1075 1076 INIT_LIST_HEAD(&itnim->io_q); 1077 INIT_LIST_HEAD(&itnim->io_cleanup_q); 1078 INIT_LIST_HEAD(&itnim->pending_q); 1079 INIT_LIST_HEAD(&itnim->tsk_q); 1080 INIT_LIST_HEAD(&itnim->delay_comp_q); 1081 for (j = 0; j < BFA_IOBUCKET_MAX; j++) 1082 itnim->ioprofile.io_latency.min[j] = ~0; 1083 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit); 1084 } 1085 1086 bfa_mem_kva_curp(fcp) = (u8 *) itnim; 1087 } 1088 1089 void bfa_itnim_iocdisable(struct bfa_itnim_s * itnim)1090 bfa_itnim_iocdisable(struct bfa_itnim_s *itnim) 1091 { 1092 bfa_stats(itnim, ioc_disabled); 1093 bfa_sm_send_event(itnim, BFA_ITNIM_SM_HWFAIL); 1094 } 1095 1096 static bfa_boolean_t bfa_itnim_send_fwcreate(struct bfa_itnim_s * itnim)1097 bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim) 1098 { 1099 struct bfi_itn_create_req_s *m; 1100 1101 itnim->msg_no++; 1102 1103 /* 1104 * check for room in queue to send request now 1105 */ 1106 m = bfa_reqq_next(itnim->bfa, itnim->reqq); 1107 if (!m) { 1108 bfa_reqq_wait(itnim->bfa, itnim->reqq, &itnim->reqq_wait); 1109 return BFA_FALSE; 1110 } 1111 1112 bfi_h2i_set(m->mh, BFI_MC_ITN, BFI_ITN_H2I_CREATE_REQ, 1113 bfa_fn_lpu(itnim->bfa)); 1114 m->fw_handle = itnim->rport->fw_handle; 1115 m->class = FC_CLASS_3; 1116 m->seq_rec = itnim->seq_rec; 1117 m->msg_no = itnim->msg_no; 1118 bfa_stats(itnim, fw_create); 1119 1120 /* 1121 * queue I/O message to firmware 1122 */ 1123 bfa_reqq_produce(itnim->bfa, itnim->reqq, m->mh); 1124 return BFA_TRUE; 1125 } 1126 1127 static bfa_boolean_t bfa_itnim_send_fwdelete(struct bfa_itnim_s * itnim)1128 bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim) 1129 { 1130 struct bfi_itn_delete_req_s *m; 1131 1132 /* 1133 * check for room in queue to send request now 1134 */ 1135 m = bfa_reqq_next(itnim->bfa, itnim->reqq); 1136 if (!m) { 1137 bfa_reqq_wait(itnim->bfa, itnim->reqq, &itnim->reqq_wait); 1138 return BFA_FALSE; 1139 } 1140 1141 bfi_h2i_set(m->mh, BFI_MC_ITN, BFI_ITN_H2I_DELETE_REQ, 1142 bfa_fn_lpu(itnim->bfa)); 1143 m->fw_handle = itnim->rport->fw_handle; 1144 bfa_stats(itnim, fw_delete); 1145 1146 /* 1147 * queue I/O message to firmware 1148 */ 1149 bfa_reqq_produce(itnim->bfa, itnim->reqq, m->mh); 1150 return BFA_TRUE; 1151 } 1152 1153 /* 1154 * Cleanup all pending failed inflight requests. 1155 */ 1156 static void bfa_itnim_delayed_comp(struct bfa_itnim_s * itnim,bfa_boolean_t iotov)1157 bfa_itnim_delayed_comp(struct bfa_itnim_s *itnim, bfa_boolean_t iotov) 1158 { 1159 struct bfa_ioim_s *ioim; 1160 struct list_head *qe, *qen; 1161 1162 list_for_each_safe(qe, qen, &itnim->delay_comp_q) { 1163 ioim = (struct bfa_ioim_s *)qe; 1164 bfa_ioim_delayed_comp(ioim, iotov); 1165 } 1166 } 1167 1168 /* 1169 * Start all pending IO requests. 1170 */ 1171 static void bfa_itnim_iotov_online(struct bfa_itnim_s * itnim)1172 bfa_itnim_iotov_online(struct bfa_itnim_s *itnim) 1173 { 1174 struct bfa_ioim_s *ioim; 1175 1176 bfa_itnim_iotov_stop(itnim); 1177 1178 /* 1179 * Abort all inflight IO requests in the queue 1180 */ 1181 bfa_itnim_delayed_comp(itnim, BFA_FALSE); 1182 1183 /* 1184 * Start all pending IO requests. 1185 */ 1186 while (!list_empty(&itnim->pending_q)) { 1187 bfa_q_deq(&itnim->pending_q, &ioim); 1188 list_add_tail(&ioim->qe, &itnim->io_q); 1189 bfa_ioim_start(ioim); 1190 } 1191 } 1192 1193 /* 1194 * Fail all pending IO requests 1195 */ 1196 static void bfa_itnim_iotov_cleanup(struct bfa_itnim_s * itnim)1197 bfa_itnim_iotov_cleanup(struct bfa_itnim_s *itnim) 1198 { 1199 struct bfa_ioim_s *ioim; 1200 1201 /* 1202 * Fail all inflight IO requests in the queue 1203 */ 1204 bfa_itnim_delayed_comp(itnim, BFA_TRUE); 1205 1206 /* 1207 * Fail any pending IO requests. 1208 */ 1209 while (!list_empty(&itnim->pending_q)) { 1210 bfa_q_deq(&itnim->pending_q, &ioim); 1211 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q); 1212 bfa_ioim_tov(ioim); 1213 } 1214 } 1215 1216 /* 1217 * IO TOV timer callback. Fail any pending IO requests. 1218 */ 1219 static void bfa_itnim_iotov(void * itnim_arg)1220 bfa_itnim_iotov(void *itnim_arg) 1221 { 1222 struct bfa_itnim_s *itnim = itnim_arg; 1223 1224 itnim->iotov_active = BFA_FALSE; 1225 1226 bfa_cb_itnim_tov_begin(itnim->ditn); 1227 bfa_itnim_iotov_cleanup(itnim); 1228 bfa_cb_itnim_tov(itnim->ditn); 1229 } 1230 1231 /* 1232 * Start IO TOV timer for failing back pending IO requests in offline state. 1233 */ 1234 static void bfa_itnim_iotov_start(struct bfa_itnim_s * itnim)1235 bfa_itnim_iotov_start(struct bfa_itnim_s *itnim) 1236 { 1237 if (itnim->fcpim->path_tov > 0) { 1238 1239 itnim->iotov_active = BFA_TRUE; 1240 WARN_ON(!bfa_itnim_hold_io(itnim)); 1241 bfa_timer_start(itnim->bfa, &itnim->timer, 1242 bfa_itnim_iotov, itnim, itnim->fcpim->path_tov); 1243 } 1244 } 1245 1246 /* 1247 * Stop IO TOV timer. 1248 */ 1249 static void bfa_itnim_iotov_stop(struct bfa_itnim_s * itnim)1250 bfa_itnim_iotov_stop(struct bfa_itnim_s *itnim) 1251 { 1252 if (itnim->iotov_active) { 1253 itnim->iotov_active = BFA_FALSE; 1254 bfa_timer_stop(&itnim->timer); 1255 } 1256 } 1257 1258 /* 1259 * Stop IO TOV timer. 1260 */ 1261 static void bfa_itnim_iotov_delete(struct bfa_itnim_s * itnim)1262 bfa_itnim_iotov_delete(struct bfa_itnim_s *itnim) 1263 { 1264 bfa_boolean_t pathtov_active = BFA_FALSE; 1265 1266 if (itnim->iotov_active) 1267 pathtov_active = BFA_TRUE; 1268 1269 bfa_itnim_iotov_stop(itnim); 1270 if (pathtov_active) 1271 bfa_cb_itnim_tov_begin(itnim->ditn); 1272 bfa_itnim_iotov_cleanup(itnim); 1273 if (pathtov_active) 1274 bfa_cb_itnim_tov(itnim->ditn); 1275 } 1276 1277 static void bfa_itnim_update_del_itn_stats(struct bfa_itnim_s * itnim)1278 bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim) 1279 { 1280 struct bfa_fcpim_s *fcpim = BFA_FCPIM(itnim->bfa); 1281 fcpim->del_itn_stats.del_itn_iocomp_aborted += 1282 itnim->stats.iocomp_aborted; 1283 fcpim->del_itn_stats.del_itn_iocomp_timedout += 1284 itnim->stats.iocomp_timedout; 1285 fcpim->del_itn_stats.del_itn_iocom_sqer_needed += 1286 itnim->stats.iocom_sqer_needed; 1287 fcpim->del_itn_stats.del_itn_iocom_res_free += 1288 itnim->stats.iocom_res_free; 1289 fcpim->del_itn_stats.del_itn_iocom_hostabrts += 1290 itnim->stats.iocom_hostabrts; 1291 fcpim->del_itn_stats.del_itn_total_ios += itnim->stats.total_ios; 1292 fcpim->del_itn_stats.del_io_iocdowns += itnim->stats.io_iocdowns; 1293 fcpim->del_itn_stats.del_tm_iocdowns += itnim->stats.tm_iocdowns; 1294 } 1295 1296 /* 1297 * bfa_itnim_public 1298 */ 1299 1300 /* 1301 * Itnim interrupt processing. 1302 */ 1303 void bfa_itnim_isr(struct bfa_s * bfa,struct bfi_msg_s * m)1304 bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *m) 1305 { 1306 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 1307 union bfi_itn_i2h_msg_u msg; 1308 struct bfa_itnim_s *itnim; 1309 1310 bfa_trc(bfa, m->mhdr.msg_id); 1311 1312 msg.msg = m; 1313 1314 switch (m->mhdr.msg_id) { 1315 case BFI_ITN_I2H_CREATE_RSP: 1316 itnim = BFA_ITNIM_FROM_TAG(fcpim, 1317 msg.create_rsp->bfa_handle); 1318 WARN_ON(msg.create_rsp->status != BFA_STATUS_OK); 1319 bfa_stats(itnim, create_comps); 1320 bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP); 1321 break; 1322 1323 case BFI_ITN_I2H_DELETE_RSP: 1324 itnim = BFA_ITNIM_FROM_TAG(fcpim, 1325 msg.delete_rsp->bfa_handle); 1326 WARN_ON(msg.delete_rsp->status != BFA_STATUS_OK); 1327 bfa_stats(itnim, delete_comps); 1328 bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP); 1329 break; 1330 1331 case BFI_ITN_I2H_SLER_EVENT: 1332 itnim = BFA_ITNIM_FROM_TAG(fcpim, 1333 msg.sler_event->bfa_handle); 1334 bfa_stats(itnim, sler_events); 1335 bfa_sm_send_event(itnim, BFA_ITNIM_SM_SLER); 1336 break; 1337 1338 default: 1339 bfa_trc(bfa, m->mhdr.msg_id); 1340 WARN_ON(1); 1341 } 1342 } 1343 1344 /* 1345 * bfa_itnim_api 1346 */ 1347 1348 struct bfa_itnim_s * bfa_itnim_create(struct bfa_s * bfa,struct bfa_rport_s * rport,void * ditn)1349 bfa_itnim_create(struct bfa_s *bfa, struct bfa_rport_s *rport, void *ditn) 1350 { 1351 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 1352 struct bfa_itnim_s *itnim; 1353 1354 bfa_itn_create(bfa, rport, bfa_itnim_isr); 1355 1356 itnim = BFA_ITNIM_FROM_TAG(fcpim, rport->rport_tag); 1357 WARN_ON(itnim->rport != rport); 1358 1359 itnim->ditn = ditn; 1360 1361 bfa_stats(itnim, creates); 1362 bfa_sm_send_event(itnim, BFA_ITNIM_SM_CREATE); 1363 1364 return itnim; 1365 } 1366 1367 void bfa_itnim_delete(struct bfa_itnim_s * itnim)1368 bfa_itnim_delete(struct bfa_itnim_s *itnim) 1369 { 1370 bfa_stats(itnim, deletes); 1371 bfa_sm_send_event(itnim, BFA_ITNIM_SM_DELETE); 1372 } 1373 1374 void bfa_itnim_online(struct bfa_itnim_s * itnim,bfa_boolean_t seq_rec)1375 bfa_itnim_online(struct bfa_itnim_s *itnim, bfa_boolean_t seq_rec) 1376 { 1377 itnim->seq_rec = seq_rec; 1378 bfa_stats(itnim, onlines); 1379 bfa_sm_send_event(itnim, BFA_ITNIM_SM_ONLINE); 1380 } 1381 1382 void bfa_itnim_offline(struct bfa_itnim_s * itnim)1383 bfa_itnim_offline(struct bfa_itnim_s *itnim) 1384 { 1385 bfa_stats(itnim, offlines); 1386 bfa_sm_send_event(itnim, BFA_ITNIM_SM_OFFLINE); 1387 } 1388 1389 /* 1390 * Return true if itnim is considered offline for holding off IO request. 1391 * IO is not held if itnim is being deleted. 1392 */ 1393 bfa_boolean_t bfa_itnim_hold_io(struct bfa_itnim_s * itnim)1394 bfa_itnim_hold_io(struct bfa_itnim_s *itnim) 1395 { 1396 return itnim->fcpim->path_tov && itnim->iotov_active && 1397 (bfa_sm_cmp_state(itnim, bfa_itnim_sm_fwcreate) || 1398 bfa_sm_cmp_state(itnim, bfa_itnim_sm_sler) || 1399 bfa_sm_cmp_state(itnim, bfa_itnim_sm_cleanup_offline) || 1400 bfa_sm_cmp_state(itnim, bfa_itnim_sm_fwdelete) || 1401 bfa_sm_cmp_state(itnim, bfa_itnim_sm_offline) || 1402 bfa_sm_cmp_state(itnim, bfa_itnim_sm_iocdisable)); 1403 } 1404 1405 #define bfa_io_lat_clock_res_div HZ 1406 #define bfa_io_lat_clock_res_mul 1000 1407 bfa_status_t bfa_itnim_get_ioprofile(struct bfa_itnim_s * itnim,struct bfa_itnim_ioprofile_s * ioprofile)1408 bfa_itnim_get_ioprofile(struct bfa_itnim_s *itnim, 1409 struct bfa_itnim_ioprofile_s *ioprofile) 1410 { 1411 struct bfa_fcpim_s *fcpim; 1412 1413 if (!itnim) 1414 return BFA_STATUS_NO_FCPIM_NEXUS; 1415 1416 fcpim = BFA_FCPIM(itnim->bfa); 1417 1418 if (!fcpim->io_profile) 1419 return BFA_STATUS_IOPROFILE_OFF; 1420 1421 itnim->ioprofile.index = BFA_IOBUCKET_MAX; 1422 /* unsigned 32-bit time_t overflow here in y2106 */ 1423 itnim->ioprofile.io_profile_start_time = 1424 bfa_io_profile_start_time(itnim->bfa); 1425 itnim->ioprofile.clock_res_mul = bfa_io_lat_clock_res_mul; 1426 itnim->ioprofile.clock_res_div = bfa_io_lat_clock_res_div; 1427 *ioprofile = itnim->ioprofile; 1428 1429 return BFA_STATUS_OK; 1430 } 1431 1432 void bfa_itnim_clear_stats(struct bfa_itnim_s * itnim)1433 bfa_itnim_clear_stats(struct bfa_itnim_s *itnim) 1434 { 1435 int j; 1436 1437 if (!itnim) 1438 return; 1439 1440 memset(&itnim->stats, 0, sizeof(itnim->stats)); 1441 memset(&itnim->ioprofile, 0, sizeof(itnim->ioprofile)); 1442 for (j = 0; j < BFA_IOBUCKET_MAX; j++) 1443 itnim->ioprofile.io_latency.min[j] = ~0; 1444 } 1445 1446 /* 1447 * BFA IO module state machine functions 1448 */ 1449 1450 /* 1451 * IO is not started (unallocated). 1452 */ 1453 static void bfa_ioim_sm_uninit(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1454 bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1455 { 1456 switch (event) { 1457 case BFA_IOIM_SM_START: 1458 if (!bfa_itnim_is_online(ioim->itnim)) { 1459 if (!bfa_itnim_hold_io(ioim->itnim)) { 1460 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1461 list_del(&ioim->qe); 1462 list_add_tail(&ioim->qe, 1463 &ioim->fcpim->ioim_comp_q); 1464 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, 1465 __bfa_cb_ioim_pathtov, ioim); 1466 } else { 1467 list_del(&ioim->qe); 1468 list_add_tail(&ioim->qe, 1469 &ioim->itnim->pending_q); 1470 } 1471 break; 1472 } 1473 1474 if (ioim->nsges > BFI_SGE_INLINE) { 1475 if (!bfa_ioim_sgpg_alloc(ioim)) { 1476 bfa_sm_set_state(ioim, bfa_ioim_sm_sgalloc); 1477 return; 1478 } 1479 } 1480 1481 if (!bfa_ioim_send_ioreq(ioim)) { 1482 bfa_sm_set_state(ioim, bfa_ioim_sm_qfull); 1483 break; 1484 } 1485 1486 bfa_sm_set_state(ioim, bfa_ioim_sm_active); 1487 break; 1488 1489 case BFA_IOIM_SM_IOTOV: 1490 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1491 bfa_ioim_move_to_comp_q(ioim); 1492 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, 1493 __bfa_cb_ioim_pathtov, ioim); 1494 break; 1495 1496 case BFA_IOIM_SM_ABORT: 1497 /* 1498 * IO in pending queue can get abort requests. Complete abort 1499 * requests immediately. 1500 */ 1501 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1502 WARN_ON(!bfa_q_is_on_q(&ioim->itnim->pending_q, ioim)); 1503 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, 1504 __bfa_cb_ioim_abort, ioim); 1505 break; 1506 1507 default: 1508 bfa_sm_fault(ioim->bfa, event); 1509 } 1510 } 1511 1512 /* 1513 * IO is waiting for SG pages. 1514 */ 1515 static void bfa_ioim_sm_sgalloc(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1516 bfa_ioim_sm_sgalloc(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1517 { 1518 bfa_trc(ioim->bfa, ioim->iotag); 1519 bfa_trc(ioim->bfa, event); 1520 1521 switch (event) { 1522 case BFA_IOIM_SM_SGALLOCED: 1523 if (!bfa_ioim_send_ioreq(ioim)) { 1524 bfa_sm_set_state(ioim, bfa_ioim_sm_qfull); 1525 break; 1526 } 1527 bfa_sm_set_state(ioim, bfa_ioim_sm_active); 1528 break; 1529 1530 case BFA_IOIM_SM_CLEANUP: 1531 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1532 bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe); 1533 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, 1534 ioim); 1535 bfa_ioim_notify_cleanup(ioim); 1536 break; 1537 1538 case BFA_IOIM_SM_ABORT: 1539 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1540 bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe); 1541 bfa_ioim_move_to_comp_q(ioim); 1542 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, 1543 ioim); 1544 break; 1545 1546 case BFA_IOIM_SM_HWFAIL: 1547 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1548 bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe); 1549 bfa_ioim_move_to_comp_q(ioim); 1550 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, 1551 ioim); 1552 break; 1553 1554 default: 1555 bfa_sm_fault(ioim->bfa, event); 1556 } 1557 } 1558 1559 /* 1560 * IO is active. 1561 */ 1562 static void bfa_ioim_sm_active(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1563 bfa_ioim_sm_active(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1564 { 1565 switch (event) { 1566 case BFA_IOIM_SM_COMP_GOOD: 1567 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1568 bfa_ioim_move_to_comp_q(ioim); 1569 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, 1570 __bfa_cb_ioim_good_comp, ioim); 1571 break; 1572 1573 case BFA_IOIM_SM_COMP: 1574 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1575 bfa_ioim_move_to_comp_q(ioim); 1576 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_comp, 1577 ioim); 1578 break; 1579 1580 case BFA_IOIM_SM_DONE: 1581 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); 1582 bfa_ioim_move_to_comp_q(ioim); 1583 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_comp, 1584 ioim); 1585 break; 1586 1587 case BFA_IOIM_SM_ABORT: 1588 ioim->iosp->abort_explicit = BFA_TRUE; 1589 ioim->io_cbfn = __bfa_cb_ioim_abort; 1590 1591 if (bfa_ioim_send_abort(ioim)) 1592 bfa_sm_set_state(ioim, bfa_ioim_sm_abort); 1593 else { 1594 bfa_sm_set_state(ioim, bfa_ioim_sm_abort_qfull); 1595 bfa_stats(ioim->itnim, qwait); 1596 bfa_reqq_wait(ioim->bfa, ioim->reqq, 1597 &ioim->iosp->reqq_wait); 1598 } 1599 break; 1600 1601 case BFA_IOIM_SM_CLEANUP: 1602 ioim->iosp->abort_explicit = BFA_FALSE; 1603 ioim->io_cbfn = __bfa_cb_ioim_failed; 1604 1605 if (bfa_ioim_send_abort(ioim)) 1606 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup); 1607 else { 1608 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull); 1609 bfa_stats(ioim->itnim, qwait); 1610 bfa_reqq_wait(ioim->bfa, ioim->reqq, 1611 &ioim->iosp->reqq_wait); 1612 } 1613 break; 1614 1615 case BFA_IOIM_SM_HWFAIL: 1616 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1617 bfa_ioim_move_to_comp_q(ioim); 1618 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, 1619 ioim); 1620 break; 1621 1622 case BFA_IOIM_SM_SQRETRY: 1623 if (bfa_ioim_maxretry_reached(ioim)) { 1624 /* max retry reached, free IO */ 1625 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); 1626 bfa_ioim_move_to_comp_q(ioim); 1627 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, 1628 __bfa_cb_ioim_failed, ioim); 1629 break; 1630 } 1631 /* waiting for IO tag resource free */ 1632 bfa_sm_set_state(ioim, bfa_ioim_sm_cmnd_retry); 1633 break; 1634 1635 default: 1636 bfa_sm_fault(ioim->bfa, event); 1637 } 1638 } 1639 1640 /* 1641 * IO is retried with new tag. 1642 */ 1643 static void bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1644 bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1645 { 1646 switch (event) { 1647 case BFA_IOIM_SM_FREE: 1648 /* abts and rrq done. Now retry the IO with new tag */ 1649 bfa_ioim_update_iotag(ioim); 1650 if (!bfa_ioim_send_ioreq(ioim)) { 1651 bfa_sm_set_state(ioim, bfa_ioim_sm_qfull); 1652 break; 1653 } 1654 bfa_sm_set_state(ioim, bfa_ioim_sm_active); 1655 break; 1656 1657 case BFA_IOIM_SM_CLEANUP: 1658 ioim->iosp->abort_explicit = BFA_FALSE; 1659 ioim->io_cbfn = __bfa_cb_ioim_failed; 1660 1661 if (bfa_ioim_send_abort(ioim)) 1662 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup); 1663 else { 1664 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull); 1665 bfa_stats(ioim->itnim, qwait); 1666 bfa_reqq_wait(ioim->bfa, ioim->reqq, 1667 &ioim->iosp->reqq_wait); 1668 } 1669 break; 1670 1671 case BFA_IOIM_SM_HWFAIL: 1672 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1673 bfa_ioim_move_to_comp_q(ioim); 1674 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, 1675 __bfa_cb_ioim_failed, ioim); 1676 break; 1677 1678 case BFA_IOIM_SM_ABORT: 1679 /* in this state IO abort is done. 1680 * Waiting for IO tag resource free. 1681 */ 1682 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); 1683 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, 1684 ioim); 1685 break; 1686 1687 default: 1688 bfa_sm_fault(ioim->bfa, event); 1689 } 1690 } 1691 1692 /* 1693 * IO is being aborted, waiting for completion from firmware. 1694 */ 1695 static void bfa_ioim_sm_abort(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1696 bfa_ioim_sm_abort(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1697 { 1698 bfa_trc(ioim->bfa, ioim->iotag); 1699 bfa_trc(ioim->bfa, event); 1700 1701 switch (event) { 1702 case BFA_IOIM_SM_COMP_GOOD: 1703 case BFA_IOIM_SM_COMP: 1704 case BFA_IOIM_SM_DONE: 1705 case BFA_IOIM_SM_FREE: 1706 break; 1707 1708 case BFA_IOIM_SM_ABORT_DONE: 1709 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); 1710 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, 1711 ioim); 1712 break; 1713 1714 case BFA_IOIM_SM_ABORT_COMP: 1715 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1716 bfa_ioim_move_to_comp_q(ioim); 1717 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, 1718 ioim); 1719 break; 1720 1721 case BFA_IOIM_SM_COMP_UTAG: 1722 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1723 bfa_ioim_move_to_comp_q(ioim); 1724 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, 1725 ioim); 1726 break; 1727 1728 case BFA_IOIM_SM_CLEANUP: 1729 WARN_ON(ioim->iosp->abort_explicit != BFA_TRUE); 1730 ioim->iosp->abort_explicit = BFA_FALSE; 1731 1732 if (bfa_ioim_send_abort(ioim)) 1733 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup); 1734 else { 1735 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull); 1736 bfa_stats(ioim->itnim, qwait); 1737 bfa_reqq_wait(ioim->bfa, ioim->reqq, 1738 &ioim->iosp->reqq_wait); 1739 } 1740 break; 1741 1742 case BFA_IOIM_SM_HWFAIL: 1743 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1744 bfa_ioim_move_to_comp_q(ioim); 1745 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, 1746 ioim); 1747 break; 1748 1749 default: 1750 bfa_sm_fault(ioim->bfa, event); 1751 } 1752 } 1753 1754 /* 1755 * IO is being cleaned up (implicit abort), waiting for completion from 1756 * firmware. 1757 */ 1758 static void bfa_ioim_sm_cleanup(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1759 bfa_ioim_sm_cleanup(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1760 { 1761 bfa_trc(ioim->bfa, ioim->iotag); 1762 bfa_trc(ioim->bfa, event); 1763 1764 switch (event) { 1765 case BFA_IOIM_SM_COMP_GOOD: 1766 case BFA_IOIM_SM_COMP: 1767 case BFA_IOIM_SM_DONE: 1768 case BFA_IOIM_SM_FREE: 1769 break; 1770 1771 case BFA_IOIM_SM_ABORT: 1772 /* 1773 * IO is already being aborted implicitly 1774 */ 1775 ioim->io_cbfn = __bfa_cb_ioim_abort; 1776 break; 1777 1778 case BFA_IOIM_SM_ABORT_DONE: 1779 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); 1780 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); 1781 bfa_ioim_notify_cleanup(ioim); 1782 break; 1783 1784 case BFA_IOIM_SM_ABORT_COMP: 1785 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1786 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); 1787 bfa_ioim_notify_cleanup(ioim); 1788 break; 1789 1790 case BFA_IOIM_SM_COMP_UTAG: 1791 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1792 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); 1793 bfa_ioim_notify_cleanup(ioim); 1794 break; 1795 1796 case BFA_IOIM_SM_HWFAIL: 1797 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1798 bfa_ioim_move_to_comp_q(ioim); 1799 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, 1800 ioim); 1801 break; 1802 1803 case BFA_IOIM_SM_CLEANUP: 1804 /* 1805 * IO can be in cleanup state already due to TM command. 1806 * 2nd cleanup request comes from ITN offline event. 1807 */ 1808 break; 1809 1810 default: 1811 bfa_sm_fault(ioim->bfa, event); 1812 } 1813 } 1814 1815 /* 1816 * IO is waiting for room in request CQ 1817 */ 1818 static void bfa_ioim_sm_qfull(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1819 bfa_ioim_sm_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1820 { 1821 bfa_trc(ioim->bfa, ioim->iotag); 1822 bfa_trc(ioim->bfa, event); 1823 1824 switch (event) { 1825 case BFA_IOIM_SM_QRESUME: 1826 bfa_sm_set_state(ioim, bfa_ioim_sm_active); 1827 bfa_ioim_send_ioreq(ioim); 1828 break; 1829 1830 case BFA_IOIM_SM_ABORT: 1831 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1832 bfa_reqq_wcancel(&ioim->iosp->reqq_wait); 1833 bfa_ioim_move_to_comp_q(ioim); 1834 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, 1835 ioim); 1836 break; 1837 1838 case BFA_IOIM_SM_CLEANUP: 1839 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1840 bfa_reqq_wcancel(&ioim->iosp->reqq_wait); 1841 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, 1842 ioim); 1843 bfa_ioim_notify_cleanup(ioim); 1844 break; 1845 1846 case BFA_IOIM_SM_HWFAIL: 1847 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1848 bfa_reqq_wcancel(&ioim->iosp->reqq_wait); 1849 bfa_ioim_move_to_comp_q(ioim); 1850 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, 1851 ioim); 1852 break; 1853 1854 default: 1855 bfa_sm_fault(ioim->bfa, event); 1856 } 1857 } 1858 1859 /* 1860 * Active IO is being aborted, waiting for room in request CQ. 1861 */ 1862 static void bfa_ioim_sm_abort_qfull(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1863 bfa_ioim_sm_abort_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1864 { 1865 bfa_trc(ioim->bfa, ioim->iotag); 1866 bfa_trc(ioim->bfa, event); 1867 1868 switch (event) { 1869 case BFA_IOIM_SM_QRESUME: 1870 bfa_sm_set_state(ioim, bfa_ioim_sm_abort); 1871 bfa_ioim_send_abort(ioim); 1872 break; 1873 1874 case BFA_IOIM_SM_CLEANUP: 1875 WARN_ON(ioim->iosp->abort_explicit != BFA_TRUE); 1876 ioim->iosp->abort_explicit = BFA_FALSE; 1877 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull); 1878 break; 1879 1880 case BFA_IOIM_SM_COMP_GOOD: 1881 case BFA_IOIM_SM_COMP: 1882 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1883 bfa_reqq_wcancel(&ioim->iosp->reqq_wait); 1884 bfa_ioim_move_to_comp_q(ioim); 1885 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, 1886 ioim); 1887 break; 1888 1889 case BFA_IOIM_SM_DONE: 1890 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); 1891 bfa_reqq_wcancel(&ioim->iosp->reqq_wait); 1892 bfa_ioim_move_to_comp_q(ioim); 1893 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort, 1894 ioim); 1895 break; 1896 1897 case BFA_IOIM_SM_HWFAIL: 1898 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1899 bfa_reqq_wcancel(&ioim->iosp->reqq_wait); 1900 bfa_ioim_move_to_comp_q(ioim); 1901 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, 1902 ioim); 1903 break; 1904 1905 default: 1906 bfa_sm_fault(ioim->bfa, event); 1907 } 1908 } 1909 1910 /* 1911 * Active IO is being cleaned up, waiting for room in request CQ. 1912 */ 1913 static void bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1914 bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1915 { 1916 bfa_trc(ioim->bfa, ioim->iotag); 1917 bfa_trc(ioim->bfa, event); 1918 1919 switch (event) { 1920 case BFA_IOIM_SM_QRESUME: 1921 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup); 1922 bfa_ioim_send_abort(ioim); 1923 break; 1924 1925 case BFA_IOIM_SM_ABORT: 1926 /* 1927 * IO is already being cleaned up implicitly 1928 */ 1929 ioim->io_cbfn = __bfa_cb_ioim_abort; 1930 break; 1931 1932 case BFA_IOIM_SM_COMP_GOOD: 1933 case BFA_IOIM_SM_COMP: 1934 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1935 bfa_reqq_wcancel(&ioim->iosp->reqq_wait); 1936 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); 1937 bfa_ioim_notify_cleanup(ioim); 1938 break; 1939 1940 case BFA_IOIM_SM_DONE: 1941 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); 1942 bfa_reqq_wcancel(&ioim->iosp->reqq_wait); 1943 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); 1944 bfa_ioim_notify_cleanup(ioim); 1945 break; 1946 1947 case BFA_IOIM_SM_HWFAIL: 1948 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 1949 bfa_reqq_wcancel(&ioim->iosp->reqq_wait); 1950 bfa_ioim_move_to_comp_q(ioim); 1951 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed, 1952 ioim); 1953 break; 1954 1955 default: 1956 bfa_sm_fault(ioim->bfa, event); 1957 } 1958 } 1959 1960 /* 1961 * IO bfa callback is pending. 1962 */ 1963 static void bfa_ioim_sm_hcb(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1964 bfa_ioim_sm_hcb(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1965 { 1966 switch (event) { 1967 case BFA_IOIM_SM_HCB: 1968 bfa_sm_set_state(ioim, bfa_ioim_sm_uninit); 1969 bfa_ioim_free(ioim); 1970 break; 1971 1972 case BFA_IOIM_SM_CLEANUP: 1973 bfa_ioim_notify_cleanup(ioim); 1974 break; 1975 1976 case BFA_IOIM_SM_HWFAIL: 1977 break; 1978 1979 default: 1980 bfa_sm_fault(ioim->bfa, event); 1981 } 1982 } 1983 1984 /* 1985 * IO bfa callback is pending. IO resource cannot be freed. 1986 */ 1987 static void bfa_ioim_sm_hcb_free(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1988 bfa_ioim_sm_hcb_free(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 1989 { 1990 bfa_trc(ioim->bfa, ioim->iotag); 1991 bfa_trc(ioim->bfa, event); 1992 1993 switch (event) { 1994 case BFA_IOIM_SM_HCB: 1995 bfa_sm_set_state(ioim, bfa_ioim_sm_resfree); 1996 list_del(&ioim->qe); 1997 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_resfree_q); 1998 break; 1999 2000 case BFA_IOIM_SM_FREE: 2001 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 2002 break; 2003 2004 case BFA_IOIM_SM_CLEANUP: 2005 bfa_ioim_notify_cleanup(ioim); 2006 break; 2007 2008 case BFA_IOIM_SM_HWFAIL: 2009 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb); 2010 break; 2011 2012 default: 2013 bfa_sm_fault(ioim->bfa, event); 2014 } 2015 } 2016 2017 /* 2018 * IO is completed, waiting resource free from firmware. 2019 */ 2020 static void bfa_ioim_sm_resfree(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)2021 bfa_ioim_sm_resfree(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) 2022 { 2023 bfa_trc(ioim->bfa, ioim->iotag); 2024 bfa_trc(ioim->bfa, event); 2025 2026 switch (event) { 2027 case BFA_IOIM_SM_FREE: 2028 bfa_sm_set_state(ioim, bfa_ioim_sm_uninit); 2029 bfa_ioim_free(ioim); 2030 break; 2031 2032 case BFA_IOIM_SM_CLEANUP: 2033 bfa_ioim_notify_cleanup(ioim); 2034 break; 2035 2036 case BFA_IOIM_SM_HWFAIL: 2037 break; 2038 2039 default: 2040 bfa_sm_fault(ioim->bfa, event); 2041 } 2042 } 2043 2044 /* 2045 * This is called from bfa_fcpim_start after the bfa_init() with flash read 2046 * is complete by driver. now invalidate the stale content of lun mask 2047 * like unit attention, rp tag and lp tag. 2048 */ 2049 void bfa_ioim_lm_init(struct bfa_s * bfa)2050 bfa_ioim_lm_init(struct bfa_s *bfa) 2051 { 2052 struct bfa_lun_mask_s *lunm_list; 2053 int i; 2054 2055 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) 2056 return; 2057 2058 lunm_list = bfa_get_lun_mask_list(bfa); 2059 for (i = 0; i < MAX_LUN_MASK_CFG; i++) { 2060 lunm_list[i].ua = BFA_IOIM_LM_UA_RESET; 2061 lunm_list[i].lp_tag = BFA_LP_TAG_INVALID; 2062 lunm_list[i].rp_tag = BFA_RPORT_TAG_INVALID; 2063 } 2064 } 2065 2066 static void __bfa_cb_ioim_good_comp(void * cbarg,bfa_boolean_t complete)2067 __bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete) 2068 { 2069 struct bfa_ioim_s *ioim = cbarg; 2070 2071 if (!complete) { 2072 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB); 2073 return; 2074 } 2075 2076 bfa_cb_ioim_good_comp(ioim->bfa->bfad, ioim->dio); 2077 } 2078 2079 static void __bfa_cb_ioim_comp(void * cbarg,bfa_boolean_t complete)2080 __bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete) 2081 { 2082 struct bfa_ioim_s *ioim = cbarg; 2083 struct bfi_ioim_rsp_s *m; 2084 u8 *snsinfo = NULL; 2085 u8 sns_len = 0; 2086 s32 residue = 0; 2087 2088 if (!complete) { 2089 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB); 2090 return; 2091 } 2092 2093 m = (struct bfi_ioim_rsp_s *) &ioim->iosp->comp_rspmsg; 2094 if (m->io_status == BFI_IOIM_STS_OK) { 2095 /* 2096 * setup sense information, if present 2097 */ 2098 if ((m->scsi_status == SAM_STAT_CHECK_CONDITION) && 2099 m->sns_len) { 2100 sns_len = m->sns_len; 2101 snsinfo = BFA_SNSINFO_FROM_TAG(ioim->fcpim->fcp, 2102 ioim->iotag); 2103 } 2104 2105 /* 2106 * setup residue value correctly for normal completions 2107 */ 2108 if (m->resid_flags == FCP_RESID_UNDER) { 2109 residue = be32_to_cpu(m->residue); 2110 bfa_stats(ioim->itnim, iocomp_underrun); 2111 } 2112 if (m->resid_flags == FCP_RESID_OVER) { 2113 residue = be32_to_cpu(m->residue); 2114 residue = -residue; 2115 bfa_stats(ioim->itnim, iocomp_overrun); 2116 } 2117 } 2118 2119 bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, m->io_status, 2120 m->scsi_status, sns_len, snsinfo, residue); 2121 } 2122 2123 void bfa_fcpim_lunmask_rp_update(struct bfa_s * bfa,wwn_t lp_wwn,wwn_t rp_wwn,u16 rp_tag,u8 lp_tag)2124 bfa_fcpim_lunmask_rp_update(struct bfa_s *bfa, wwn_t lp_wwn, wwn_t rp_wwn, 2125 u16 rp_tag, u8 lp_tag) 2126 { 2127 struct bfa_lun_mask_s *lun_list; 2128 u8 i; 2129 2130 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) 2131 return; 2132 2133 lun_list = bfa_get_lun_mask_list(bfa); 2134 for (i = 0; i < MAX_LUN_MASK_CFG; i++) { 2135 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE) { 2136 if ((lun_list[i].lp_wwn == lp_wwn) && 2137 (lun_list[i].rp_wwn == rp_wwn)) { 2138 lun_list[i].rp_tag = rp_tag; 2139 lun_list[i].lp_tag = lp_tag; 2140 } 2141 } 2142 } 2143 } 2144 2145 /* 2146 * set UA for all active luns in LM DB 2147 */ 2148 static void bfa_ioim_lm_set_ua(struct bfa_s * bfa)2149 bfa_ioim_lm_set_ua(struct bfa_s *bfa) 2150 { 2151 struct bfa_lun_mask_s *lunm_list; 2152 int i; 2153 2154 lunm_list = bfa_get_lun_mask_list(bfa); 2155 for (i = 0; i < MAX_LUN_MASK_CFG; i++) { 2156 if (lunm_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE) 2157 continue; 2158 lunm_list[i].ua = BFA_IOIM_LM_UA_SET; 2159 } 2160 } 2161 2162 bfa_status_t bfa_fcpim_lunmask_update(struct bfa_s * bfa,u32 update)2163 bfa_fcpim_lunmask_update(struct bfa_s *bfa, u32 update) 2164 { 2165 struct bfa_lunmask_cfg_s *lun_mask; 2166 2167 bfa_trc(bfa, bfa_get_lun_mask_status(bfa)); 2168 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) 2169 return BFA_STATUS_FAILED; 2170 2171 if (bfa_get_lun_mask_status(bfa) == update) 2172 return BFA_STATUS_NO_CHANGE; 2173 2174 lun_mask = bfa_get_lun_mask(bfa); 2175 lun_mask->status = update; 2176 2177 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) 2178 bfa_ioim_lm_set_ua(bfa); 2179 2180 return bfa_dconf_update(bfa); 2181 } 2182 2183 bfa_status_t bfa_fcpim_lunmask_clear(struct bfa_s * bfa)2184 bfa_fcpim_lunmask_clear(struct bfa_s *bfa) 2185 { 2186 int i; 2187 struct bfa_lun_mask_s *lunm_list; 2188 2189 bfa_trc(bfa, bfa_get_lun_mask_status(bfa)); 2190 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) 2191 return BFA_STATUS_FAILED; 2192 2193 lunm_list = bfa_get_lun_mask_list(bfa); 2194 for (i = 0; i < MAX_LUN_MASK_CFG; i++) { 2195 if (lunm_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE) { 2196 if (lunm_list[i].rp_tag != BFA_RPORT_TAG_INVALID) 2197 bfa_rport_unset_lunmask(bfa, 2198 BFA_RPORT_FROM_TAG(bfa, lunm_list[i].rp_tag)); 2199 } 2200 } 2201 2202 memset(lunm_list, 0, sizeof(struct bfa_lun_mask_s) * MAX_LUN_MASK_CFG); 2203 return bfa_dconf_update(bfa); 2204 } 2205 2206 bfa_status_t bfa_fcpim_lunmask_query(struct bfa_s * bfa,void * buf)2207 bfa_fcpim_lunmask_query(struct bfa_s *bfa, void *buf) 2208 { 2209 struct bfa_lunmask_cfg_s *lun_mask; 2210 2211 bfa_trc(bfa, bfa_get_lun_mask_status(bfa)); 2212 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) 2213 return BFA_STATUS_FAILED; 2214 2215 lun_mask = bfa_get_lun_mask(bfa); 2216 memcpy(buf, lun_mask, sizeof(struct bfa_lunmask_cfg_s)); 2217 return BFA_STATUS_OK; 2218 } 2219 2220 bfa_status_t bfa_fcpim_lunmask_add(struct bfa_s * bfa,u16 vf_id,wwn_t * pwwn,wwn_t rpwwn,struct scsi_lun lun)2221 bfa_fcpim_lunmask_add(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn, 2222 wwn_t rpwwn, struct scsi_lun lun) 2223 { 2224 struct bfa_lun_mask_s *lunm_list; 2225 struct bfa_rport_s *rp = NULL; 2226 int i, free_index = MAX_LUN_MASK_CFG + 1; 2227 struct bfa_fcs_lport_s *port = NULL; 2228 struct bfa_fcs_rport_s *rp_fcs; 2229 2230 bfa_trc(bfa, bfa_get_lun_mask_status(bfa)); 2231 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) 2232 return BFA_STATUS_FAILED; 2233 2234 port = bfa_fcs_lookup_port(&((struct bfad_s *)bfa->bfad)->bfa_fcs, 2235 vf_id, *pwwn); 2236 if (port) { 2237 *pwwn = port->port_cfg.pwwn; 2238 rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn); 2239 if (rp_fcs) 2240 rp = rp_fcs->bfa_rport; 2241 } 2242 2243 lunm_list = bfa_get_lun_mask_list(bfa); 2244 /* if entry exists */ 2245 for (i = 0; i < MAX_LUN_MASK_CFG; i++) { 2246 if (lunm_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE) 2247 free_index = i; 2248 if ((lunm_list[i].lp_wwn == *pwwn) && 2249 (lunm_list[i].rp_wwn == rpwwn) && 2250 (scsilun_to_int((struct scsi_lun *)&lunm_list[i].lun) == 2251 scsilun_to_int((struct scsi_lun *)&lun))) 2252 return BFA_STATUS_ENTRY_EXISTS; 2253 } 2254 2255 if (free_index > MAX_LUN_MASK_CFG) 2256 return BFA_STATUS_MAX_ENTRY_REACHED; 2257 2258 if (rp) { 2259 lunm_list[free_index].lp_tag = bfa_lps_get_tag_from_pid(bfa, 2260 rp->rport_info.local_pid); 2261 lunm_list[free_index].rp_tag = rp->rport_tag; 2262 } else { 2263 lunm_list[free_index].lp_tag = BFA_LP_TAG_INVALID; 2264 lunm_list[free_index].rp_tag = BFA_RPORT_TAG_INVALID; 2265 } 2266 2267 lunm_list[free_index].lp_wwn = *pwwn; 2268 lunm_list[free_index].rp_wwn = rpwwn; 2269 lunm_list[free_index].lun = lun; 2270 lunm_list[free_index].state = BFA_IOIM_LUN_MASK_ACTIVE; 2271 2272 /* set for all luns in this rp */ 2273 for (i = 0; i < MAX_LUN_MASK_CFG; i++) { 2274 if ((lunm_list[i].lp_wwn == *pwwn) && 2275 (lunm_list[i].rp_wwn == rpwwn)) 2276 lunm_list[i].ua = BFA_IOIM_LM_UA_SET; 2277 } 2278 2279 return bfa_dconf_update(bfa); 2280 } 2281 2282 bfa_status_t bfa_fcpim_lunmask_delete(struct bfa_s * bfa,u16 vf_id,wwn_t * pwwn,wwn_t rpwwn,struct scsi_lun lun)2283 bfa_fcpim_lunmask_delete(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn, 2284 wwn_t rpwwn, struct scsi_lun lun) 2285 { 2286 struct bfa_lun_mask_s *lunm_list; 2287 struct bfa_fcs_lport_s *port = NULL; 2288 int i; 2289 2290 /* in min cfg lunm_list could be NULL but no commands should run. */ 2291 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG) 2292 return BFA_STATUS_FAILED; 2293 2294 bfa_trc(bfa, bfa_get_lun_mask_status(bfa)); 2295 bfa_trc(bfa, *pwwn); 2296 bfa_trc(bfa, rpwwn); 2297 bfa_trc(bfa, scsilun_to_int((struct scsi_lun *)&lun)); 2298 2299 if (*pwwn == 0) { 2300 port = bfa_fcs_lookup_port( 2301 &((struct bfad_s *)bfa->bfad)->bfa_fcs, 2302 vf_id, *pwwn); 2303 if (port) 2304 *pwwn = port->port_cfg.pwwn; 2305 } 2306 2307 lunm_list = bfa_get_lun_mask_list(bfa); 2308 for (i = 0; i < MAX_LUN_MASK_CFG; i++) { 2309 if ((lunm_list[i].lp_wwn == *pwwn) && 2310 (lunm_list[i].rp_wwn == rpwwn) && 2311 (scsilun_to_int((struct scsi_lun *)&lunm_list[i].lun) == 2312 scsilun_to_int((struct scsi_lun *)&lun))) { 2313 lunm_list[i].lp_wwn = 0; 2314 lunm_list[i].rp_wwn = 0; 2315 int_to_scsilun(0, &lunm_list[i].lun); 2316 lunm_list[i].state = BFA_IOIM_LUN_MASK_INACTIVE; 2317 if (lunm_list[i].rp_tag != BFA_RPORT_TAG_INVALID) { 2318 lunm_list[i].rp_tag = BFA_RPORT_TAG_INVALID; 2319 lunm_list[i].lp_tag = BFA_LP_TAG_INVALID; 2320 } 2321 return bfa_dconf_update(bfa); 2322 } 2323 } 2324 2325 /* set for all luns in this rp */ 2326 for (i = 0; i < MAX_LUN_MASK_CFG; i++) { 2327 if ((lunm_list[i].lp_wwn == *pwwn) && 2328 (lunm_list[i].rp_wwn == rpwwn)) 2329 lunm_list[i].ua = BFA_IOIM_LM_UA_SET; 2330 } 2331 2332 return BFA_STATUS_ENTRY_NOT_EXISTS; 2333 } 2334 2335 static void __bfa_cb_ioim_failed(void * cbarg,bfa_boolean_t complete)2336 __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete) 2337 { 2338 struct bfa_ioim_s *ioim = cbarg; 2339 2340 if (!complete) { 2341 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB); 2342 return; 2343 } 2344 2345 bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_ABORTED, 2346 0, 0, NULL, 0); 2347 } 2348 2349 static void __bfa_cb_ioim_pathtov(void * cbarg,bfa_boolean_t complete)2350 __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete) 2351 { 2352 struct bfa_ioim_s *ioim = cbarg; 2353 2354 bfa_stats(ioim->itnim, path_tov_expired); 2355 if (!complete) { 2356 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB); 2357 return; 2358 } 2359 2360 bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_PATHTOV, 2361 0, 0, NULL, 0); 2362 } 2363 2364 static void __bfa_cb_ioim_abort(void * cbarg,bfa_boolean_t complete)2365 __bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete) 2366 { 2367 struct bfa_ioim_s *ioim = cbarg; 2368 2369 if (!complete) { 2370 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB); 2371 return; 2372 } 2373 2374 bfa_cb_ioim_abort(ioim->bfa->bfad, ioim->dio); 2375 } 2376 2377 static void bfa_ioim_sgpg_alloced(void * cbarg)2378 bfa_ioim_sgpg_alloced(void *cbarg) 2379 { 2380 struct bfa_ioim_s *ioim = cbarg; 2381 2382 ioim->nsgpgs = BFA_SGPG_NPAGE(ioim->nsges); 2383 list_splice_tail_init(&ioim->iosp->sgpg_wqe.sgpg_q, &ioim->sgpg_q); 2384 ioim->sgpg = bfa_q_first(&ioim->sgpg_q); 2385 bfa_sm_send_event(ioim, BFA_IOIM_SM_SGALLOCED); 2386 } 2387 2388 /* 2389 * Send I/O request to firmware. 2390 */ 2391 static bfa_boolean_t bfa_ioim_send_ioreq(struct bfa_ioim_s * ioim)2392 bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim) 2393 { 2394 struct bfa_itnim_s *itnim = ioim->itnim; 2395 struct bfi_ioim_req_s *m; 2396 static struct fcp_cmnd_s cmnd_z0 = { { { 0 } } }; 2397 struct bfi_sge_s *sge, *sgpge; 2398 u32 pgdlen = 0; 2399 u32 fcp_dl; 2400 u64 addr; 2401 struct scatterlist *sg; 2402 struct bfa_sgpg_s *sgpg; 2403 struct scsi_cmnd *cmnd = (struct scsi_cmnd *) ioim->dio; 2404 u32 i, sge_id, pgcumsz; 2405 enum dma_data_direction dmadir; 2406 2407 /* 2408 * check for room in queue to send request now 2409 */ 2410 m = bfa_reqq_next(ioim->bfa, ioim->reqq); 2411 if (!m) { 2412 bfa_stats(ioim->itnim, qwait); 2413 bfa_reqq_wait(ioim->bfa, ioim->reqq, 2414 &ioim->iosp->reqq_wait); 2415 return BFA_FALSE; 2416 } 2417 2418 /* 2419 * build i/o request message next 2420 */ 2421 m->io_tag = cpu_to_be16(ioim->iotag); 2422 m->rport_hdl = ioim->itnim->rport->fw_handle; 2423 m->io_timeout = 0; 2424 2425 sge = &m->sges[0]; 2426 sgpg = ioim->sgpg; 2427 sge_id = 0; 2428 sgpge = NULL; 2429 pgcumsz = 0; 2430 scsi_for_each_sg(cmnd, sg, ioim->nsges, i) { 2431 if (i == 0) { 2432 /* build inline IO SG element */ 2433 addr = bfa_sgaddr_le(sg_dma_address(sg)); 2434 sge->sga = *(union bfi_addr_u *) &addr; 2435 pgdlen = sg_dma_len(sg); 2436 sge->sg_len = pgdlen; 2437 sge->flags = (ioim->nsges > BFI_SGE_INLINE) ? 2438 BFI_SGE_DATA_CPL : BFI_SGE_DATA_LAST; 2439 bfa_sge_to_be(sge); 2440 sge++; 2441 } else { 2442 if (sge_id == 0) 2443 sgpge = sgpg->sgpg->sges; 2444 2445 addr = bfa_sgaddr_le(sg_dma_address(sg)); 2446 sgpge->sga = *(union bfi_addr_u *) &addr; 2447 sgpge->sg_len = sg_dma_len(sg); 2448 pgcumsz += sgpge->sg_len; 2449 2450 /* set flags */ 2451 if (i < (ioim->nsges - 1) && 2452 sge_id < (BFI_SGPG_DATA_SGES - 1)) 2453 sgpge->flags = BFI_SGE_DATA; 2454 else if (i < (ioim->nsges - 1)) 2455 sgpge->flags = BFI_SGE_DATA_CPL; 2456 else 2457 sgpge->flags = BFI_SGE_DATA_LAST; 2458 2459 bfa_sge_to_le(sgpge); 2460 2461 sgpge++; 2462 if (i == (ioim->nsges - 1)) { 2463 sgpge->flags = BFI_SGE_PGDLEN; 2464 sgpge->sga.a32.addr_lo = 0; 2465 sgpge->sga.a32.addr_hi = 0; 2466 sgpge->sg_len = pgcumsz; 2467 bfa_sge_to_le(sgpge); 2468 } else if (++sge_id == BFI_SGPG_DATA_SGES) { 2469 sgpg = (struct bfa_sgpg_s *) bfa_q_next(sgpg); 2470 sgpge->flags = BFI_SGE_LINK; 2471 sgpge->sga = sgpg->sgpg_pa; 2472 sgpge->sg_len = pgcumsz; 2473 bfa_sge_to_le(sgpge); 2474 sge_id = 0; 2475 pgcumsz = 0; 2476 } 2477 } 2478 } 2479 2480 if (ioim->nsges > BFI_SGE_INLINE) { 2481 sge->sga = ioim->sgpg->sgpg_pa; 2482 } else { 2483 sge->sga.a32.addr_lo = 0; 2484 sge->sga.a32.addr_hi = 0; 2485 } 2486 sge->sg_len = pgdlen; 2487 sge->flags = BFI_SGE_PGDLEN; 2488 bfa_sge_to_be(sge); 2489 2490 /* 2491 * set up I/O command parameters 2492 */ 2493 m->cmnd = cmnd_z0; 2494 int_to_scsilun(cmnd->device->lun, &m->cmnd.lun); 2495 dmadir = cmnd->sc_data_direction; 2496 if (dmadir == DMA_TO_DEVICE) 2497 m->cmnd.iodir = FCP_IODIR_WRITE; 2498 else if (dmadir == DMA_FROM_DEVICE) 2499 m->cmnd.iodir = FCP_IODIR_READ; 2500 else 2501 m->cmnd.iodir = FCP_IODIR_NONE; 2502 2503 m->cmnd.cdb = *(struct scsi_cdb_s *) cmnd->cmnd; 2504 fcp_dl = scsi_bufflen(cmnd); 2505 m->cmnd.fcp_dl = cpu_to_be32(fcp_dl); 2506 2507 /* 2508 * set up I/O message header 2509 */ 2510 switch (m->cmnd.iodir) { 2511 case FCP_IODIR_READ: 2512 bfi_h2i_set(m->mh, BFI_MC_IOIM_READ, 0, bfa_fn_lpu(ioim->bfa)); 2513 bfa_stats(itnim, input_reqs); 2514 ioim->itnim->stats.rd_throughput += fcp_dl; 2515 break; 2516 case FCP_IODIR_WRITE: 2517 bfi_h2i_set(m->mh, BFI_MC_IOIM_WRITE, 0, bfa_fn_lpu(ioim->bfa)); 2518 bfa_stats(itnim, output_reqs); 2519 ioim->itnim->stats.wr_throughput += fcp_dl; 2520 break; 2521 case FCP_IODIR_RW: 2522 bfa_stats(itnim, input_reqs); 2523 bfa_stats(itnim, output_reqs); 2524 fallthrough; 2525 default: 2526 bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_fn_lpu(ioim->bfa)); 2527 } 2528 if (itnim->seq_rec || 2529 (scsi_bufflen(cmnd) & (sizeof(u32) - 1))) 2530 bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_fn_lpu(ioim->bfa)); 2531 2532 /* 2533 * queue I/O message to firmware 2534 */ 2535 bfa_reqq_produce(ioim->bfa, ioim->reqq, m->mh); 2536 return BFA_TRUE; 2537 } 2538 2539 /* 2540 * Setup any additional SG pages needed.Inline SG element is setup 2541 * at queuing time. 2542 */ 2543 static bfa_boolean_t bfa_ioim_sgpg_alloc(struct bfa_ioim_s * ioim)2544 bfa_ioim_sgpg_alloc(struct bfa_ioim_s *ioim) 2545 { 2546 u16 nsgpgs; 2547 2548 WARN_ON(ioim->nsges <= BFI_SGE_INLINE); 2549 2550 /* 2551 * allocate SG pages needed 2552 */ 2553 nsgpgs = BFA_SGPG_NPAGE(ioim->nsges); 2554 if (!nsgpgs) 2555 return BFA_TRUE; 2556 2557 if (bfa_sgpg_malloc(ioim->bfa, &ioim->sgpg_q, nsgpgs) 2558 != BFA_STATUS_OK) { 2559 bfa_sgpg_wait(ioim->bfa, &ioim->iosp->sgpg_wqe, nsgpgs); 2560 return BFA_FALSE; 2561 } 2562 2563 ioim->nsgpgs = nsgpgs; 2564 ioim->sgpg = bfa_q_first(&ioim->sgpg_q); 2565 2566 return BFA_TRUE; 2567 } 2568 2569 /* 2570 * Send I/O abort request to firmware. 2571 */ 2572 static bfa_boolean_t bfa_ioim_send_abort(struct bfa_ioim_s * ioim)2573 bfa_ioim_send_abort(struct bfa_ioim_s *ioim) 2574 { 2575 struct bfi_ioim_abort_req_s *m; 2576 enum bfi_ioim_h2i msgop; 2577 2578 /* 2579 * check for room in queue to send request now 2580 */ 2581 m = bfa_reqq_next(ioim->bfa, ioim->reqq); 2582 if (!m) 2583 return BFA_FALSE; 2584 2585 /* 2586 * build i/o request message next 2587 */ 2588 if (ioim->iosp->abort_explicit) 2589 msgop = BFI_IOIM_H2I_IOABORT_REQ; 2590 else 2591 msgop = BFI_IOIM_H2I_IOCLEANUP_REQ; 2592 2593 bfi_h2i_set(m->mh, BFI_MC_IOIM, msgop, bfa_fn_lpu(ioim->bfa)); 2594 m->io_tag = cpu_to_be16(ioim->iotag); 2595 m->abort_tag = ++ioim->abort_tag; 2596 2597 /* 2598 * queue I/O message to firmware 2599 */ 2600 bfa_reqq_produce(ioim->bfa, ioim->reqq, m->mh); 2601 return BFA_TRUE; 2602 } 2603 2604 /* 2605 * Call to resume any I/O requests waiting for room in request queue. 2606 */ 2607 static void bfa_ioim_qresume(void * cbarg)2608 bfa_ioim_qresume(void *cbarg) 2609 { 2610 struct bfa_ioim_s *ioim = cbarg; 2611 2612 bfa_stats(ioim->itnim, qresumes); 2613 bfa_sm_send_event(ioim, BFA_IOIM_SM_QRESUME); 2614 } 2615 2616 2617 static void bfa_ioim_notify_cleanup(struct bfa_ioim_s * ioim)2618 bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim) 2619 { 2620 /* 2621 * Move IO from itnim queue to fcpim global queue since itnim will be 2622 * freed. 2623 */ 2624 list_del(&ioim->qe); 2625 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q); 2626 2627 if (!ioim->iosp->tskim) { 2628 if (ioim->fcpim->delay_comp && ioim->itnim->iotov_active) { 2629 bfa_cb_dequeue(&ioim->hcb_qe); 2630 list_del(&ioim->qe); 2631 list_add_tail(&ioim->qe, &ioim->itnim->delay_comp_q); 2632 } 2633 bfa_itnim_iodone(ioim->itnim); 2634 } else 2635 bfa_wc_down(&ioim->iosp->tskim->wc); 2636 } 2637 2638 static bfa_boolean_t bfa_ioim_is_abortable(struct bfa_ioim_s * ioim)2639 bfa_ioim_is_abortable(struct bfa_ioim_s *ioim) 2640 { 2641 if ((bfa_sm_cmp_state(ioim, bfa_ioim_sm_uninit) && 2642 (!bfa_q_is_on_q(&ioim->itnim->pending_q, ioim))) || 2643 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_abort)) || 2644 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_abort_qfull)) || 2645 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_hcb)) || 2646 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_hcb_free)) || 2647 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_resfree))) 2648 return BFA_FALSE; 2649 2650 return BFA_TRUE; 2651 } 2652 2653 void bfa_ioim_delayed_comp(struct bfa_ioim_s * ioim,bfa_boolean_t iotov)2654 bfa_ioim_delayed_comp(struct bfa_ioim_s *ioim, bfa_boolean_t iotov) 2655 { 2656 /* 2657 * If path tov timer expired, failback with PATHTOV status - these 2658 * IO requests are not normally retried by IO stack. 2659 * 2660 * Otherwise device cameback online and fail it with normal failed 2661 * status so that IO stack retries these failed IO requests. 2662 */ 2663 if (iotov) 2664 ioim->io_cbfn = __bfa_cb_ioim_pathtov; 2665 else { 2666 ioim->io_cbfn = __bfa_cb_ioim_failed; 2667 bfa_stats(ioim->itnim, iocom_nexus_abort); 2668 } 2669 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim); 2670 2671 /* 2672 * Move IO to fcpim global queue since itnim will be 2673 * freed. 2674 */ 2675 list_del(&ioim->qe); 2676 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q); 2677 } 2678 2679 2680 /* 2681 * Memory allocation and initialization. 2682 */ 2683 void bfa_ioim_attach(struct bfa_fcpim_s * fcpim)2684 bfa_ioim_attach(struct bfa_fcpim_s *fcpim) 2685 { 2686 struct bfa_ioim_s *ioim; 2687 struct bfa_fcp_mod_s *fcp = fcpim->fcp; 2688 struct bfa_ioim_sp_s *iosp; 2689 u16 i; 2690 2691 /* 2692 * claim memory first 2693 */ 2694 ioim = (struct bfa_ioim_s *) bfa_mem_kva_curp(fcp); 2695 fcpim->ioim_arr = ioim; 2696 bfa_mem_kva_curp(fcp) = (u8 *) (ioim + fcpim->fcp->num_ioim_reqs); 2697 2698 iosp = (struct bfa_ioim_sp_s *) bfa_mem_kva_curp(fcp); 2699 fcpim->ioim_sp_arr = iosp; 2700 bfa_mem_kva_curp(fcp) = (u8 *) (iosp + fcpim->fcp->num_ioim_reqs); 2701 2702 /* 2703 * Initialize ioim free queues 2704 */ 2705 INIT_LIST_HEAD(&fcpim->ioim_resfree_q); 2706 INIT_LIST_HEAD(&fcpim->ioim_comp_q); 2707 2708 for (i = 0; i < fcpim->fcp->num_ioim_reqs; 2709 i++, ioim++, iosp++) { 2710 /* 2711 * initialize IOIM 2712 */ 2713 memset(ioim, 0, sizeof(struct bfa_ioim_s)); 2714 ioim->iotag = i; 2715 ioim->bfa = fcpim->bfa; 2716 ioim->fcpim = fcpim; 2717 ioim->iosp = iosp; 2718 INIT_LIST_HEAD(&ioim->sgpg_q); 2719 bfa_reqq_winit(&ioim->iosp->reqq_wait, 2720 bfa_ioim_qresume, ioim); 2721 bfa_sgpg_winit(&ioim->iosp->sgpg_wqe, 2722 bfa_ioim_sgpg_alloced, ioim); 2723 bfa_sm_set_state(ioim, bfa_ioim_sm_uninit); 2724 } 2725 } 2726 2727 void bfa_ioim_isr(struct bfa_s * bfa,struct bfi_msg_s * m)2728 bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m) 2729 { 2730 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 2731 struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m; 2732 struct bfa_ioim_s *ioim; 2733 u16 iotag; 2734 enum bfa_ioim_event evt = BFA_IOIM_SM_COMP; 2735 2736 iotag = be16_to_cpu(rsp->io_tag); 2737 2738 ioim = BFA_IOIM_FROM_TAG(fcpim, iotag); 2739 WARN_ON(ioim->iotag != iotag); 2740 2741 bfa_trc(ioim->bfa, ioim->iotag); 2742 bfa_trc(ioim->bfa, rsp->io_status); 2743 bfa_trc(ioim->bfa, rsp->reuse_io_tag); 2744 2745 if (bfa_sm_cmp_state(ioim, bfa_ioim_sm_active)) 2746 ioim->iosp->comp_rspmsg = *m; 2747 2748 switch (rsp->io_status) { 2749 case BFI_IOIM_STS_OK: 2750 bfa_stats(ioim->itnim, iocomp_ok); 2751 if (rsp->reuse_io_tag == 0) 2752 evt = BFA_IOIM_SM_DONE; 2753 else 2754 evt = BFA_IOIM_SM_COMP; 2755 break; 2756 2757 case BFI_IOIM_STS_TIMEDOUT: 2758 bfa_stats(ioim->itnim, iocomp_timedout); 2759 fallthrough; 2760 case BFI_IOIM_STS_ABORTED: 2761 rsp->io_status = BFI_IOIM_STS_ABORTED; 2762 bfa_stats(ioim->itnim, iocomp_aborted); 2763 if (rsp->reuse_io_tag == 0) 2764 evt = BFA_IOIM_SM_DONE; 2765 else 2766 evt = BFA_IOIM_SM_COMP; 2767 break; 2768 2769 case BFI_IOIM_STS_PROTO_ERR: 2770 bfa_stats(ioim->itnim, iocom_proto_err); 2771 WARN_ON(!rsp->reuse_io_tag); 2772 evt = BFA_IOIM_SM_COMP; 2773 break; 2774 2775 case BFI_IOIM_STS_SQER_NEEDED: 2776 bfa_stats(ioim->itnim, iocom_sqer_needed); 2777 WARN_ON(rsp->reuse_io_tag != 0); 2778 evt = BFA_IOIM_SM_SQRETRY; 2779 break; 2780 2781 case BFI_IOIM_STS_RES_FREE: 2782 bfa_stats(ioim->itnim, iocom_res_free); 2783 evt = BFA_IOIM_SM_FREE; 2784 break; 2785 2786 case BFI_IOIM_STS_HOST_ABORTED: 2787 bfa_stats(ioim->itnim, iocom_hostabrts); 2788 if (rsp->abort_tag != ioim->abort_tag) { 2789 bfa_trc(ioim->bfa, rsp->abort_tag); 2790 bfa_trc(ioim->bfa, ioim->abort_tag); 2791 return; 2792 } 2793 2794 if (rsp->reuse_io_tag) 2795 evt = BFA_IOIM_SM_ABORT_COMP; 2796 else 2797 evt = BFA_IOIM_SM_ABORT_DONE; 2798 break; 2799 2800 case BFI_IOIM_STS_UTAG: 2801 bfa_stats(ioim->itnim, iocom_utags); 2802 evt = BFA_IOIM_SM_COMP_UTAG; 2803 break; 2804 2805 default: 2806 WARN_ON(1); 2807 } 2808 2809 bfa_sm_send_event(ioim, evt); 2810 } 2811 2812 void bfa_ioim_good_comp_isr(struct bfa_s * bfa,struct bfi_msg_s * m)2813 bfa_ioim_good_comp_isr(struct bfa_s *bfa, struct bfi_msg_s *m) 2814 { 2815 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 2816 struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m; 2817 struct bfa_ioim_s *ioim; 2818 u16 iotag; 2819 2820 iotag = be16_to_cpu(rsp->io_tag); 2821 2822 ioim = BFA_IOIM_FROM_TAG(fcpim, iotag); 2823 WARN_ON(ioim->iotag != iotag); 2824 2825 bfa_ioim_cb_profile_comp(fcpim, ioim); 2826 2827 bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD); 2828 } 2829 2830 /* 2831 * Called by itnim to clean up IO while going offline. 2832 */ 2833 void bfa_ioim_cleanup(struct bfa_ioim_s * ioim)2834 bfa_ioim_cleanup(struct bfa_ioim_s *ioim) 2835 { 2836 bfa_trc(ioim->bfa, ioim->iotag); 2837 bfa_stats(ioim->itnim, io_cleanups); 2838 2839 ioim->iosp->tskim = NULL; 2840 bfa_sm_send_event(ioim, BFA_IOIM_SM_CLEANUP); 2841 } 2842 2843 void bfa_ioim_cleanup_tm(struct bfa_ioim_s * ioim,struct bfa_tskim_s * tskim)2844 bfa_ioim_cleanup_tm(struct bfa_ioim_s *ioim, struct bfa_tskim_s *tskim) 2845 { 2846 bfa_trc(ioim->bfa, ioim->iotag); 2847 bfa_stats(ioim->itnim, io_tmaborts); 2848 2849 ioim->iosp->tskim = tskim; 2850 bfa_sm_send_event(ioim, BFA_IOIM_SM_CLEANUP); 2851 } 2852 2853 /* 2854 * IOC failure handling. 2855 */ 2856 void bfa_ioim_iocdisable(struct bfa_ioim_s * ioim)2857 bfa_ioim_iocdisable(struct bfa_ioim_s *ioim) 2858 { 2859 bfa_trc(ioim->bfa, ioim->iotag); 2860 bfa_stats(ioim->itnim, io_iocdowns); 2861 bfa_sm_send_event(ioim, BFA_IOIM_SM_HWFAIL); 2862 } 2863 2864 /* 2865 * IO offline TOV popped. Fail the pending IO. 2866 */ 2867 void bfa_ioim_tov(struct bfa_ioim_s * ioim)2868 bfa_ioim_tov(struct bfa_ioim_s *ioim) 2869 { 2870 bfa_trc(ioim->bfa, ioim->iotag); 2871 bfa_sm_send_event(ioim, BFA_IOIM_SM_IOTOV); 2872 } 2873 2874 2875 /* 2876 * Allocate IOIM resource for initiator mode I/O request. 2877 */ 2878 struct bfa_ioim_s * bfa_ioim_alloc(struct bfa_s * bfa,struct bfad_ioim_s * dio,struct bfa_itnim_s * itnim,u16 nsges)2879 bfa_ioim_alloc(struct bfa_s *bfa, struct bfad_ioim_s *dio, 2880 struct bfa_itnim_s *itnim, u16 nsges) 2881 { 2882 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 2883 struct bfa_ioim_s *ioim; 2884 struct bfa_iotag_s *iotag = NULL; 2885 2886 /* 2887 * alocate IOIM resource 2888 */ 2889 bfa_q_deq(&fcpim->fcp->iotag_ioim_free_q, &iotag); 2890 if (!iotag) { 2891 bfa_stats(itnim, no_iotags); 2892 return NULL; 2893 } 2894 2895 ioim = BFA_IOIM_FROM_TAG(fcpim, iotag->tag); 2896 2897 ioim->dio = dio; 2898 ioim->itnim = itnim; 2899 ioim->nsges = nsges; 2900 ioim->nsgpgs = 0; 2901 2902 bfa_stats(itnim, total_ios); 2903 fcpim->ios_active++; 2904 2905 list_add_tail(&ioim->qe, &itnim->io_q); 2906 2907 return ioim; 2908 } 2909 2910 void bfa_ioim_free(struct bfa_ioim_s * ioim)2911 bfa_ioim_free(struct bfa_ioim_s *ioim) 2912 { 2913 struct bfa_fcpim_s *fcpim = ioim->fcpim; 2914 struct bfa_iotag_s *iotag; 2915 2916 if (ioim->nsgpgs > 0) 2917 bfa_sgpg_mfree(ioim->bfa, &ioim->sgpg_q, ioim->nsgpgs); 2918 2919 bfa_stats(ioim->itnim, io_comps); 2920 fcpim->ios_active--; 2921 2922 ioim->iotag &= BFA_IOIM_IOTAG_MASK; 2923 2924 WARN_ON(!(ioim->iotag < 2925 (fcpim->fcp->num_ioim_reqs + fcpim->fcp->num_fwtio_reqs))); 2926 iotag = BFA_IOTAG_FROM_TAG(fcpim->fcp, ioim->iotag); 2927 2928 if (ioim->iotag < fcpim->fcp->num_ioim_reqs) 2929 list_add_tail(&iotag->qe, &fcpim->fcp->iotag_ioim_free_q); 2930 else 2931 list_add_tail(&iotag->qe, &fcpim->fcp->iotag_tio_free_q); 2932 2933 list_del(&ioim->qe); 2934 } 2935 2936 void bfa_ioim_start(struct bfa_ioim_s * ioim)2937 bfa_ioim_start(struct bfa_ioim_s *ioim) 2938 { 2939 bfa_ioim_cb_profile_start(ioim->fcpim, ioim); 2940 2941 /* 2942 * Obtain the queue over which this request has to be issued 2943 */ 2944 ioim->reqq = bfa_fcpim_ioredirect_enabled(ioim->bfa) ? 2945 BFA_FALSE : bfa_itnim_get_reqq(ioim); 2946 2947 bfa_sm_send_event(ioim, BFA_IOIM_SM_START); 2948 } 2949 2950 /* 2951 * Driver I/O abort request. 2952 */ 2953 bfa_status_t bfa_ioim_abort(struct bfa_ioim_s * ioim)2954 bfa_ioim_abort(struct bfa_ioim_s *ioim) 2955 { 2956 2957 bfa_trc(ioim->bfa, ioim->iotag); 2958 2959 if (!bfa_ioim_is_abortable(ioim)) 2960 return BFA_STATUS_FAILED; 2961 2962 bfa_stats(ioim->itnim, io_aborts); 2963 bfa_sm_send_event(ioim, BFA_IOIM_SM_ABORT); 2964 2965 return BFA_STATUS_OK; 2966 } 2967 2968 /* 2969 * BFA TSKIM state machine functions 2970 */ 2971 2972 /* 2973 * Task management command beginning state. 2974 */ 2975 static void bfa_tskim_sm_uninit(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)2976 bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) 2977 { 2978 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); 2979 2980 switch (event) { 2981 case BFA_TSKIM_SM_START: 2982 bfa_sm_set_state(tskim, bfa_tskim_sm_active); 2983 bfa_tskim_gather_ios(tskim); 2984 2985 /* 2986 * If device is offline, do not send TM on wire. Just cleanup 2987 * any pending IO requests and complete TM request. 2988 */ 2989 if (!bfa_itnim_is_online(tskim->itnim)) { 2990 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); 2991 tskim->tsk_status = BFI_TSKIM_STS_OK; 2992 bfa_tskim_cleanup_ios(tskim); 2993 return; 2994 } 2995 2996 if (!bfa_tskim_send(tskim)) { 2997 bfa_sm_set_state(tskim, bfa_tskim_sm_qfull); 2998 bfa_stats(tskim->itnim, tm_qwait); 2999 bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq, 3000 &tskim->reqq_wait); 3001 } 3002 break; 3003 3004 default: 3005 bfa_sm_fault(tskim->bfa, event); 3006 } 3007 } 3008 3009 /* 3010 * TM command is active, awaiting completion from firmware to 3011 * cleanup IO requests in TM scope. 3012 */ 3013 static void bfa_tskim_sm_active(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3014 bfa_tskim_sm_active(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) 3015 { 3016 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); 3017 3018 switch (event) { 3019 case BFA_TSKIM_SM_DONE: 3020 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); 3021 bfa_tskim_cleanup_ios(tskim); 3022 break; 3023 3024 case BFA_TSKIM_SM_CLEANUP: 3025 bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup); 3026 if (!bfa_tskim_send_abort(tskim)) { 3027 bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup_qfull); 3028 bfa_stats(tskim->itnim, tm_qwait); 3029 bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq, 3030 &tskim->reqq_wait); 3031 } 3032 break; 3033 3034 case BFA_TSKIM_SM_HWFAIL: 3035 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); 3036 bfa_tskim_iocdisable_ios(tskim); 3037 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); 3038 break; 3039 3040 default: 3041 bfa_sm_fault(tskim->bfa, event); 3042 } 3043 } 3044 3045 /* 3046 * An active TM is being cleaned up since ITN is offline. Awaiting cleanup 3047 * completion event from firmware. 3048 */ 3049 static void bfa_tskim_sm_cleanup(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3050 bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) 3051 { 3052 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); 3053 3054 switch (event) { 3055 case BFA_TSKIM_SM_DONE: 3056 /* 3057 * Ignore and wait for ABORT completion from firmware. 3058 */ 3059 break; 3060 3061 case BFA_TSKIM_SM_UTAG: 3062 case BFA_TSKIM_SM_CLEANUP_DONE: 3063 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); 3064 bfa_tskim_cleanup_ios(tskim); 3065 break; 3066 3067 case BFA_TSKIM_SM_HWFAIL: 3068 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); 3069 bfa_tskim_iocdisable_ios(tskim); 3070 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); 3071 break; 3072 3073 default: 3074 bfa_sm_fault(tskim->bfa, event); 3075 } 3076 } 3077 3078 static void bfa_tskim_sm_iocleanup(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3079 bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) 3080 { 3081 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); 3082 3083 switch (event) { 3084 case BFA_TSKIM_SM_IOS_DONE: 3085 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); 3086 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_done); 3087 break; 3088 3089 case BFA_TSKIM_SM_CLEANUP: 3090 /* 3091 * Ignore, TM command completed on wire. 3092 * Notify TM conmpletion on IO cleanup completion. 3093 */ 3094 break; 3095 3096 case BFA_TSKIM_SM_HWFAIL: 3097 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); 3098 bfa_tskim_iocdisable_ios(tskim); 3099 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); 3100 break; 3101 3102 default: 3103 bfa_sm_fault(tskim->bfa, event); 3104 } 3105 } 3106 3107 /* 3108 * Task management command is waiting for room in request CQ 3109 */ 3110 static void bfa_tskim_sm_qfull(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3111 bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) 3112 { 3113 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); 3114 3115 switch (event) { 3116 case BFA_TSKIM_SM_QRESUME: 3117 bfa_sm_set_state(tskim, bfa_tskim_sm_active); 3118 bfa_tskim_send(tskim); 3119 break; 3120 3121 case BFA_TSKIM_SM_CLEANUP: 3122 /* 3123 * No need to send TM on wire since ITN is offline. 3124 */ 3125 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup); 3126 bfa_reqq_wcancel(&tskim->reqq_wait); 3127 bfa_tskim_cleanup_ios(tskim); 3128 break; 3129 3130 case BFA_TSKIM_SM_HWFAIL: 3131 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); 3132 bfa_reqq_wcancel(&tskim->reqq_wait); 3133 bfa_tskim_iocdisable_ios(tskim); 3134 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); 3135 break; 3136 3137 default: 3138 bfa_sm_fault(tskim->bfa, event); 3139 } 3140 } 3141 3142 /* 3143 * Task management command is active, awaiting for room in request CQ 3144 * to send clean up request. 3145 */ 3146 static void bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3147 bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim, 3148 enum bfa_tskim_event event) 3149 { 3150 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); 3151 3152 switch (event) { 3153 case BFA_TSKIM_SM_DONE: 3154 bfa_reqq_wcancel(&tskim->reqq_wait); 3155 fallthrough; 3156 case BFA_TSKIM_SM_QRESUME: 3157 bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup); 3158 bfa_tskim_send_abort(tskim); 3159 break; 3160 3161 case BFA_TSKIM_SM_HWFAIL: 3162 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb); 3163 bfa_reqq_wcancel(&tskim->reqq_wait); 3164 bfa_tskim_iocdisable_ios(tskim); 3165 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed); 3166 break; 3167 3168 default: 3169 bfa_sm_fault(tskim->bfa, event); 3170 } 3171 } 3172 3173 /* 3174 * BFA callback is pending 3175 */ 3176 static void bfa_tskim_sm_hcb(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3177 bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, enum bfa_tskim_event event) 3178 { 3179 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event); 3180 3181 switch (event) { 3182 case BFA_TSKIM_SM_HCB: 3183 bfa_sm_set_state(tskim, bfa_tskim_sm_uninit); 3184 bfa_tskim_free(tskim); 3185 break; 3186 3187 case BFA_TSKIM_SM_CLEANUP: 3188 bfa_tskim_notify_comp(tskim); 3189 break; 3190 3191 case BFA_TSKIM_SM_HWFAIL: 3192 break; 3193 3194 default: 3195 bfa_sm_fault(tskim->bfa, event); 3196 } 3197 } 3198 3199 static void __bfa_cb_tskim_done(void * cbarg,bfa_boolean_t complete)3200 __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete) 3201 { 3202 struct bfa_tskim_s *tskim = cbarg; 3203 3204 if (!complete) { 3205 bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB); 3206 return; 3207 } 3208 3209 bfa_stats(tskim->itnim, tm_success); 3210 bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, tskim->tsk_status); 3211 } 3212 3213 static void __bfa_cb_tskim_failed(void * cbarg,bfa_boolean_t complete)3214 __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete) 3215 { 3216 struct bfa_tskim_s *tskim = cbarg; 3217 3218 if (!complete) { 3219 bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB); 3220 return; 3221 } 3222 3223 bfa_stats(tskim->itnim, tm_failures); 3224 bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, 3225 BFI_TSKIM_STS_FAILED); 3226 } 3227 3228 static bfa_boolean_t bfa_tskim_match_scope(struct bfa_tskim_s * tskim,struct scsi_lun lun)3229 bfa_tskim_match_scope(struct bfa_tskim_s *tskim, struct scsi_lun lun) 3230 { 3231 switch (tskim->tm_cmnd) { 3232 case FCP_TM_TARGET_RESET: 3233 return BFA_TRUE; 3234 3235 case FCP_TM_ABORT_TASK_SET: 3236 case FCP_TM_CLEAR_TASK_SET: 3237 case FCP_TM_LUN_RESET: 3238 case FCP_TM_CLEAR_ACA: 3239 return !memcmp(&tskim->lun, &lun, sizeof(lun)); 3240 3241 default: 3242 WARN_ON(1); 3243 } 3244 3245 return BFA_FALSE; 3246 } 3247 3248 /* 3249 * Gather affected IO requests and task management commands. 3250 */ 3251 static void bfa_tskim_gather_ios(struct bfa_tskim_s * tskim)3252 bfa_tskim_gather_ios(struct bfa_tskim_s *tskim) 3253 { 3254 struct bfa_itnim_s *itnim = tskim->itnim; 3255 struct bfa_ioim_s *ioim; 3256 struct list_head *qe, *qen; 3257 struct scsi_cmnd *cmnd; 3258 struct scsi_lun scsilun; 3259 3260 INIT_LIST_HEAD(&tskim->io_q); 3261 3262 /* 3263 * Gather any active IO requests first. 3264 */ 3265 list_for_each_safe(qe, qen, &itnim->io_q) { 3266 ioim = (struct bfa_ioim_s *) qe; 3267 cmnd = (struct scsi_cmnd *) ioim->dio; 3268 int_to_scsilun(cmnd->device->lun, &scsilun); 3269 if (bfa_tskim_match_scope(tskim, scsilun)) { 3270 list_del(&ioim->qe); 3271 list_add_tail(&ioim->qe, &tskim->io_q); 3272 } 3273 } 3274 3275 /* 3276 * Failback any pending IO requests immediately. 3277 */ 3278 list_for_each_safe(qe, qen, &itnim->pending_q) { 3279 ioim = (struct bfa_ioim_s *) qe; 3280 cmnd = (struct scsi_cmnd *) ioim->dio; 3281 int_to_scsilun(cmnd->device->lun, &scsilun); 3282 if (bfa_tskim_match_scope(tskim, scsilun)) { 3283 list_del(&ioim->qe); 3284 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q); 3285 bfa_ioim_tov(ioim); 3286 } 3287 } 3288 } 3289 3290 /* 3291 * IO cleanup completion 3292 */ 3293 static void bfa_tskim_cleanp_comp(void * tskim_cbarg)3294 bfa_tskim_cleanp_comp(void *tskim_cbarg) 3295 { 3296 struct bfa_tskim_s *tskim = tskim_cbarg; 3297 3298 bfa_stats(tskim->itnim, tm_io_comps); 3299 bfa_sm_send_event(tskim, BFA_TSKIM_SM_IOS_DONE); 3300 } 3301 3302 /* 3303 * Gather affected IO requests and task management commands. 3304 */ 3305 static void bfa_tskim_cleanup_ios(struct bfa_tskim_s * tskim)3306 bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim) 3307 { 3308 struct bfa_ioim_s *ioim; 3309 struct list_head *qe, *qen; 3310 3311 bfa_wc_init(&tskim->wc, bfa_tskim_cleanp_comp, tskim); 3312 3313 list_for_each_safe(qe, qen, &tskim->io_q) { 3314 ioim = (struct bfa_ioim_s *) qe; 3315 bfa_wc_up(&tskim->wc); 3316 bfa_ioim_cleanup_tm(ioim, tskim); 3317 } 3318 3319 bfa_wc_wait(&tskim->wc); 3320 } 3321 3322 /* 3323 * Send task management request to firmware. 3324 */ 3325 static bfa_boolean_t bfa_tskim_send(struct bfa_tskim_s * tskim)3326 bfa_tskim_send(struct bfa_tskim_s *tskim) 3327 { 3328 struct bfa_itnim_s *itnim = tskim->itnim; 3329 struct bfi_tskim_req_s *m; 3330 3331 /* 3332 * check for room in queue to send request now 3333 */ 3334 m = bfa_reqq_next(tskim->bfa, itnim->reqq); 3335 if (!m) 3336 return BFA_FALSE; 3337 3338 /* 3339 * build i/o request message next 3340 */ 3341 bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_TM_REQ, 3342 bfa_fn_lpu(tskim->bfa)); 3343 3344 m->tsk_tag = cpu_to_be16(tskim->tsk_tag); 3345 m->itn_fhdl = tskim->itnim->rport->fw_handle; 3346 m->t_secs = tskim->tsecs; 3347 m->lun = tskim->lun; 3348 m->tm_flags = tskim->tm_cmnd; 3349 3350 /* 3351 * queue I/O message to firmware 3352 */ 3353 bfa_reqq_produce(tskim->bfa, itnim->reqq, m->mh); 3354 return BFA_TRUE; 3355 } 3356 3357 /* 3358 * Send abort request to cleanup an active TM to firmware. 3359 */ 3360 static bfa_boolean_t bfa_tskim_send_abort(struct bfa_tskim_s * tskim)3361 bfa_tskim_send_abort(struct bfa_tskim_s *tskim) 3362 { 3363 struct bfa_itnim_s *itnim = tskim->itnim; 3364 struct bfi_tskim_abortreq_s *m; 3365 3366 /* 3367 * check for room in queue to send request now 3368 */ 3369 m = bfa_reqq_next(tskim->bfa, itnim->reqq); 3370 if (!m) 3371 return BFA_FALSE; 3372 3373 /* 3374 * build i/o request message next 3375 */ 3376 bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_ABORT_REQ, 3377 bfa_fn_lpu(tskim->bfa)); 3378 3379 m->tsk_tag = cpu_to_be16(tskim->tsk_tag); 3380 3381 /* 3382 * queue I/O message to firmware 3383 */ 3384 bfa_reqq_produce(tskim->bfa, itnim->reqq, m->mh); 3385 return BFA_TRUE; 3386 } 3387 3388 /* 3389 * Call to resume task management cmnd waiting for room in request queue. 3390 */ 3391 static void bfa_tskim_qresume(void * cbarg)3392 bfa_tskim_qresume(void *cbarg) 3393 { 3394 struct bfa_tskim_s *tskim = cbarg; 3395 3396 bfa_stats(tskim->itnim, tm_qresumes); 3397 bfa_sm_send_event(tskim, BFA_TSKIM_SM_QRESUME); 3398 } 3399 3400 /* 3401 * Cleanup IOs associated with a task mangement command on IOC failures. 3402 */ 3403 static void bfa_tskim_iocdisable_ios(struct bfa_tskim_s * tskim)3404 bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim) 3405 { 3406 struct bfa_ioim_s *ioim; 3407 struct list_head *qe, *qen; 3408 3409 list_for_each_safe(qe, qen, &tskim->io_q) { 3410 ioim = (struct bfa_ioim_s *) qe; 3411 bfa_ioim_iocdisable(ioim); 3412 } 3413 } 3414 3415 /* 3416 * Notification on completions from related ioim. 3417 */ 3418 void bfa_tskim_iodone(struct bfa_tskim_s * tskim)3419 bfa_tskim_iodone(struct bfa_tskim_s *tskim) 3420 { 3421 bfa_wc_down(&tskim->wc); 3422 } 3423 3424 /* 3425 * Handle IOC h/w failure notification from itnim. 3426 */ 3427 void bfa_tskim_iocdisable(struct bfa_tskim_s * tskim)3428 bfa_tskim_iocdisable(struct bfa_tskim_s *tskim) 3429 { 3430 tskim->notify = BFA_FALSE; 3431 bfa_stats(tskim->itnim, tm_iocdowns); 3432 bfa_sm_send_event(tskim, BFA_TSKIM_SM_HWFAIL); 3433 } 3434 3435 /* 3436 * Cleanup TM command and associated IOs as part of ITNIM offline. 3437 */ 3438 void bfa_tskim_cleanup(struct bfa_tskim_s * tskim)3439 bfa_tskim_cleanup(struct bfa_tskim_s *tskim) 3440 { 3441 tskim->notify = BFA_TRUE; 3442 bfa_stats(tskim->itnim, tm_cleanups); 3443 bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP); 3444 } 3445 3446 /* 3447 * Memory allocation and initialization. 3448 */ 3449 void bfa_tskim_attach(struct bfa_fcpim_s * fcpim)3450 bfa_tskim_attach(struct bfa_fcpim_s *fcpim) 3451 { 3452 struct bfa_tskim_s *tskim; 3453 struct bfa_fcp_mod_s *fcp = fcpim->fcp; 3454 u16 i; 3455 3456 INIT_LIST_HEAD(&fcpim->tskim_free_q); 3457 INIT_LIST_HEAD(&fcpim->tskim_unused_q); 3458 3459 tskim = (struct bfa_tskim_s *) bfa_mem_kva_curp(fcp); 3460 fcpim->tskim_arr = tskim; 3461 3462 for (i = 0; i < fcpim->num_tskim_reqs; i++, tskim++) { 3463 /* 3464 * initialize TSKIM 3465 */ 3466 memset(tskim, 0, sizeof(struct bfa_tskim_s)); 3467 tskim->tsk_tag = i; 3468 tskim->bfa = fcpim->bfa; 3469 tskim->fcpim = fcpim; 3470 tskim->notify = BFA_FALSE; 3471 bfa_reqq_winit(&tskim->reqq_wait, bfa_tskim_qresume, 3472 tskim); 3473 bfa_sm_set_state(tskim, bfa_tskim_sm_uninit); 3474 3475 list_add_tail(&tskim->qe, &fcpim->tskim_free_q); 3476 } 3477 3478 bfa_mem_kva_curp(fcp) = (u8 *) tskim; 3479 } 3480 3481 void bfa_tskim_isr(struct bfa_s * bfa,struct bfi_msg_s * m)3482 bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *m) 3483 { 3484 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 3485 struct bfi_tskim_rsp_s *rsp = (struct bfi_tskim_rsp_s *) m; 3486 struct bfa_tskim_s *tskim; 3487 u16 tsk_tag = be16_to_cpu(rsp->tsk_tag); 3488 3489 tskim = BFA_TSKIM_FROM_TAG(fcpim, tsk_tag); 3490 WARN_ON(tskim->tsk_tag != tsk_tag); 3491 3492 tskim->tsk_status = rsp->tsk_status; 3493 3494 /* 3495 * Firmware sends BFI_TSKIM_STS_ABORTED status for abort 3496 * requests. All other statuses are for normal completions. 3497 */ 3498 if (rsp->tsk_status == BFI_TSKIM_STS_ABORTED) { 3499 bfa_stats(tskim->itnim, tm_cleanup_comps); 3500 bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP_DONE); 3501 } else if (rsp->tsk_status == BFI_TSKIM_STS_UTAG) { 3502 bfa_sm_send_event(tskim, BFA_TSKIM_SM_UTAG); 3503 } else { 3504 bfa_stats(tskim->itnim, tm_fw_rsps); 3505 bfa_sm_send_event(tskim, BFA_TSKIM_SM_DONE); 3506 } 3507 } 3508 3509 3510 struct bfa_tskim_s * bfa_tskim_alloc(struct bfa_s * bfa,struct bfad_tskim_s * dtsk)3511 bfa_tskim_alloc(struct bfa_s *bfa, struct bfad_tskim_s *dtsk) 3512 { 3513 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 3514 struct bfa_tskim_s *tskim; 3515 3516 bfa_q_deq(&fcpim->tskim_free_q, &tskim); 3517 3518 if (tskim) 3519 tskim->dtsk = dtsk; 3520 3521 return tskim; 3522 } 3523 3524 void bfa_tskim_free(struct bfa_tskim_s * tskim)3525 bfa_tskim_free(struct bfa_tskim_s *tskim) 3526 { 3527 WARN_ON(!bfa_q_is_on_q_func(&tskim->itnim->tsk_q, &tskim->qe)); 3528 list_del(&tskim->qe); 3529 list_add_tail(&tskim->qe, &tskim->fcpim->tskim_free_q); 3530 } 3531 3532 /* 3533 * Start a task management command. 3534 * 3535 * @param[in] tskim BFA task management command instance 3536 * @param[in] itnim i-t nexus for the task management command 3537 * @param[in] lun lun, if applicable 3538 * @param[in] tm_cmnd Task management command code. 3539 * @param[in] t_secs Timeout in seconds 3540 * 3541 * @return None. 3542 */ 3543 void bfa_tskim_start(struct bfa_tskim_s * tskim,struct bfa_itnim_s * itnim,struct scsi_lun lun,enum fcp_tm_cmnd tm_cmnd,u8 tsecs)3544 bfa_tskim_start(struct bfa_tskim_s *tskim, struct bfa_itnim_s *itnim, 3545 struct scsi_lun lun, 3546 enum fcp_tm_cmnd tm_cmnd, u8 tsecs) 3547 { 3548 tskim->itnim = itnim; 3549 tskim->lun = lun; 3550 tskim->tm_cmnd = tm_cmnd; 3551 tskim->tsecs = tsecs; 3552 tskim->notify = BFA_FALSE; 3553 bfa_stats(itnim, tm_cmnds); 3554 3555 list_add_tail(&tskim->qe, &itnim->tsk_q); 3556 bfa_sm_send_event(tskim, BFA_TSKIM_SM_START); 3557 } 3558 3559 void bfa_tskim_res_recfg(struct bfa_s * bfa,u16 num_tskim_fw)3560 bfa_tskim_res_recfg(struct bfa_s *bfa, u16 num_tskim_fw) 3561 { 3562 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 3563 struct list_head *qe; 3564 int i; 3565 3566 for (i = 0; i < (fcpim->num_tskim_reqs - num_tskim_fw); i++) { 3567 bfa_q_deq_tail(&fcpim->tskim_free_q, &qe); 3568 list_add_tail(qe, &fcpim->tskim_unused_q); 3569 } 3570 } 3571 3572 void bfa_fcp_meminfo(struct bfa_iocfc_cfg_s * cfg,struct bfa_meminfo_s * minfo,struct bfa_s * bfa)3573 bfa_fcp_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo, 3574 struct bfa_s *bfa) 3575 { 3576 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); 3577 struct bfa_mem_kva_s *fcp_kva = BFA_MEM_FCP_KVA(bfa); 3578 struct bfa_mem_dma_s *seg_ptr; 3579 u16 nsegs, idx, per_seg_ios, num_io_req; 3580 u32 km_len = 0; 3581 3582 /* 3583 * ZERO for num_ioim_reqs and num_fwtio_reqs is allowed config value. 3584 * So if the values are non zero, adjust them appropriately. 3585 */ 3586 if (cfg->fwcfg.num_ioim_reqs && 3587 cfg->fwcfg.num_ioim_reqs < BFA_IOIM_MIN) 3588 cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MIN; 3589 else if (cfg->fwcfg.num_ioim_reqs > BFA_IOIM_MAX) 3590 cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX; 3591 3592 if (cfg->fwcfg.num_fwtio_reqs > BFA_FWTIO_MAX) 3593 cfg->fwcfg.num_fwtio_reqs = BFA_FWTIO_MAX; 3594 3595 num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs); 3596 if (num_io_req > BFA_IO_MAX) { 3597 if (cfg->fwcfg.num_ioim_reqs && cfg->fwcfg.num_fwtio_reqs) { 3598 cfg->fwcfg.num_ioim_reqs = BFA_IO_MAX/2; 3599 cfg->fwcfg.num_fwtio_reqs = BFA_IO_MAX/2; 3600 } else if (cfg->fwcfg.num_fwtio_reqs) 3601 cfg->fwcfg.num_fwtio_reqs = BFA_FWTIO_MAX; 3602 else 3603 cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX; 3604 } 3605 3606 bfa_fcpim_meminfo(cfg, &km_len); 3607 3608 num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs); 3609 km_len += num_io_req * sizeof(struct bfa_iotag_s); 3610 km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itn_s); 3611 3612 /* dma memory */ 3613 nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN); 3614 per_seg_ios = BFI_MEM_NREQS_SEG(BFI_IOIM_SNSLEN); 3615 3616 bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) { 3617 if (num_io_req >= per_seg_ios) { 3618 num_io_req -= per_seg_ios; 3619 bfa_mem_dma_setup(minfo, seg_ptr, 3620 per_seg_ios * BFI_IOIM_SNSLEN); 3621 } else 3622 bfa_mem_dma_setup(minfo, seg_ptr, 3623 num_io_req * BFI_IOIM_SNSLEN); 3624 } 3625 3626 /* kva memory */ 3627 bfa_mem_kva_setup(minfo, fcp_kva, km_len); 3628 } 3629 3630 void bfa_fcp_attach(struct bfa_s * bfa,void * bfad,struct bfa_iocfc_cfg_s * cfg,struct bfa_pcidev_s * pcidev)3631 bfa_fcp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg, 3632 struct bfa_pcidev_s *pcidev) 3633 { 3634 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); 3635 struct bfa_mem_dma_s *seg_ptr; 3636 u16 idx, nsegs, num_io_req; 3637 3638 fcp->max_ioim_reqs = cfg->fwcfg.num_ioim_reqs; 3639 fcp->num_ioim_reqs = cfg->fwcfg.num_ioim_reqs; 3640 fcp->num_fwtio_reqs = cfg->fwcfg.num_fwtio_reqs; 3641 fcp->num_itns = cfg->fwcfg.num_rports; 3642 fcp->bfa = bfa; 3643 3644 /* 3645 * Setup the pool of snsbase addr's, that is passed to fw as 3646 * part of bfi_iocfc_cfg_s. 3647 */ 3648 num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs); 3649 nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN); 3650 3651 bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) { 3652 3653 if (!bfa_mem_dma_virt(seg_ptr)) 3654 break; 3655 3656 fcp->snsbase[idx].pa = bfa_mem_dma_phys(seg_ptr); 3657 fcp->snsbase[idx].kva = bfa_mem_dma_virt(seg_ptr); 3658 bfa_iocfc_set_snsbase(bfa, idx, fcp->snsbase[idx].pa); 3659 } 3660 3661 fcp->throttle_update_required = 1; 3662 bfa_fcpim_attach(fcp, bfad, cfg, pcidev); 3663 3664 bfa_iotag_attach(fcp); 3665 3666 fcp->itn_arr = (struct bfa_itn_s *) bfa_mem_kva_curp(fcp); 3667 bfa_mem_kva_curp(fcp) = (u8 *)fcp->itn_arr + 3668 (fcp->num_itns * sizeof(struct bfa_itn_s)); 3669 memset(fcp->itn_arr, 0, 3670 (fcp->num_itns * sizeof(struct bfa_itn_s))); 3671 } 3672 3673 void bfa_fcp_iocdisable(struct bfa_s * bfa)3674 bfa_fcp_iocdisable(struct bfa_s *bfa) 3675 { 3676 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); 3677 3678 bfa_fcpim_iocdisable(fcp); 3679 } 3680 3681 void bfa_fcp_res_recfg(struct bfa_s * bfa,u16 num_ioim_fw,u16 max_ioim_fw)3682 bfa_fcp_res_recfg(struct bfa_s *bfa, u16 num_ioim_fw, u16 max_ioim_fw) 3683 { 3684 struct bfa_fcp_mod_s *mod = BFA_FCP_MOD(bfa); 3685 struct list_head *qe; 3686 int i; 3687 3688 /* Update io throttle value only once during driver load time */ 3689 if (!mod->throttle_update_required) 3690 return; 3691 3692 for (i = 0; i < (mod->num_ioim_reqs - num_ioim_fw); i++) { 3693 bfa_q_deq_tail(&mod->iotag_ioim_free_q, &qe); 3694 list_add_tail(qe, &mod->iotag_unused_q); 3695 } 3696 3697 if (mod->num_ioim_reqs != num_ioim_fw) { 3698 bfa_trc(bfa, mod->num_ioim_reqs); 3699 bfa_trc(bfa, num_ioim_fw); 3700 } 3701 3702 mod->max_ioim_reqs = max_ioim_fw; 3703 mod->num_ioim_reqs = num_ioim_fw; 3704 mod->throttle_update_required = 0; 3705 } 3706 3707 void bfa_itn_create(struct bfa_s * bfa,struct bfa_rport_s * rport,void (* isr)(struct bfa_s * bfa,struct bfi_msg_s * m))3708 bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport, 3709 void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m)) 3710 { 3711 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); 3712 struct bfa_itn_s *itn; 3713 3714 itn = BFA_ITN_FROM_TAG(fcp, rport->rport_tag); 3715 itn->isr = isr; 3716 } 3717 3718 /* 3719 * Itn interrupt processing. 3720 */ 3721 void bfa_itn_isr(struct bfa_s * bfa,struct bfi_msg_s * m)3722 bfa_itn_isr(struct bfa_s *bfa, struct bfi_msg_s *m) 3723 { 3724 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); 3725 union bfi_itn_i2h_msg_u msg; 3726 struct bfa_itn_s *itn; 3727 3728 msg.msg = m; 3729 itn = BFA_ITN_FROM_TAG(fcp, msg.create_rsp->bfa_handle); 3730 3731 if (itn->isr) 3732 itn->isr(bfa, m); 3733 else 3734 WARN_ON(1); 3735 } 3736 3737 void bfa_iotag_attach(struct bfa_fcp_mod_s * fcp)3738 bfa_iotag_attach(struct bfa_fcp_mod_s *fcp) 3739 { 3740 struct bfa_iotag_s *iotag; 3741 u16 num_io_req, i; 3742 3743 iotag = (struct bfa_iotag_s *) bfa_mem_kva_curp(fcp); 3744 fcp->iotag_arr = iotag; 3745 3746 INIT_LIST_HEAD(&fcp->iotag_ioim_free_q); 3747 INIT_LIST_HEAD(&fcp->iotag_tio_free_q); 3748 INIT_LIST_HEAD(&fcp->iotag_unused_q); 3749 3750 num_io_req = fcp->num_ioim_reqs + fcp->num_fwtio_reqs; 3751 for (i = 0; i < num_io_req; i++, iotag++) { 3752 memset(iotag, 0, sizeof(struct bfa_iotag_s)); 3753 iotag->tag = i; 3754 if (i < fcp->num_ioim_reqs) 3755 list_add_tail(&iotag->qe, &fcp->iotag_ioim_free_q); 3756 else 3757 list_add_tail(&iotag->qe, &fcp->iotag_tio_free_q); 3758 } 3759 3760 bfa_mem_kva_curp(fcp) = (u8 *) iotag; 3761 } 3762 3763 3764 /* 3765 * To send config req, first try to use throttle value from flash 3766 * If 0, then use driver parameter 3767 * We need to use min(flash_val, drv_val) because 3768 * memory allocation was done based on this cfg'd value 3769 */ 3770 u16 bfa_fcpim_get_throttle_cfg(struct bfa_s * bfa,u16 drv_cfg_param)3771 bfa_fcpim_get_throttle_cfg(struct bfa_s *bfa, u16 drv_cfg_param) 3772 { 3773 u16 tmp; 3774 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); 3775 3776 /* 3777 * If throttle value from flash is already in effect after driver is 3778 * loaded then until next load, always return current value instead 3779 * of actual flash value 3780 */ 3781 if (!fcp->throttle_update_required) 3782 return (u16)fcp->num_ioim_reqs; 3783 3784 tmp = bfa_dconf_read_data_valid(bfa) ? bfa_fcpim_read_throttle(bfa) : 0; 3785 if (!tmp || (tmp > drv_cfg_param)) 3786 tmp = drv_cfg_param; 3787 3788 return tmp; 3789 } 3790 3791 bfa_status_t bfa_fcpim_write_throttle(struct bfa_s * bfa,u16 value)3792 bfa_fcpim_write_throttle(struct bfa_s *bfa, u16 value) 3793 { 3794 if (!bfa_dconf_get_min_cfg(bfa)) { 3795 BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.value = value; 3796 BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.is_valid = 1; 3797 return BFA_STATUS_OK; 3798 } 3799 3800 return BFA_STATUS_FAILED; 3801 } 3802 3803 u16 bfa_fcpim_read_throttle(struct bfa_s * bfa)3804 bfa_fcpim_read_throttle(struct bfa_s *bfa) 3805 { 3806 struct bfa_throttle_cfg_s *throttle_cfg = 3807 &(BFA_DCONF_MOD(bfa)->dconf->throttle_cfg); 3808 3809 return ((!bfa_dconf_get_min_cfg(bfa)) ? 3810 ((throttle_cfg->is_valid == 1) ? (throttle_cfg->value) : 0) : 0); 3811 } 3812 3813 bfa_status_t bfa_fcpim_throttle_set(struct bfa_s * bfa,u16 value)3814 bfa_fcpim_throttle_set(struct bfa_s *bfa, u16 value) 3815 { 3816 /* in min cfg no commands should run. */ 3817 if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) || 3818 (!bfa_dconf_read_data_valid(bfa))) 3819 return BFA_STATUS_FAILED; 3820 3821 bfa_fcpim_write_throttle(bfa, value); 3822 3823 return bfa_dconf_update(bfa); 3824 } 3825 3826 bfa_status_t bfa_fcpim_throttle_get(struct bfa_s * bfa,void * buf)3827 bfa_fcpim_throttle_get(struct bfa_s *bfa, void *buf) 3828 { 3829 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); 3830 struct bfa_defs_fcpim_throttle_s throttle; 3831 3832 if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) || 3833 (!bfa_dconf_read_data_valid(bfa))) 3834 return BFA_STATUS_FAILED; 3835 3836 memset(&throttle, 0, sizeof(struct bfa_defs_fcpim_throttle_s)); 3837 3838 throttle.cur_value = (u16)(fcpim->fcp->num_ioim_reqs); 3839 throttle.cfg_value = bfa_fcpim_read_throttle(bfa); 3840 if (!throttle.cfg_value) 3841 throttle.cfg_value = throttle.cur_value; 3842 throttle.max_value = (u16)(fcpim->fcp->max_ioim_reqs); 3843 memcpy(buf, &throttle, sizeof(struct bfa_defs_fcpim_throttle_s)); 3844 3845 return BFA_STATUS_OK; 3846 } 3847