1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 /* 25 * SCSI (SCSA) midlayer interface for PMC drier. 26 */ 27 28 #include <sys/scsi/adapters/pmcs/pmcs.h> 29 30 extern scsi_lun_t scsi_lun64_to_lun(scsi_lun64_t lun64); 31 32 static int pmcs_scsa_tran_tgt_init(dev_info_t *, dev_info_t *, 33 scsi_hba_tran_t *, struct scsi_device *); 34 static void pmcs_scsa_tran_tgt_free(dev_info_t *, dev_info_t *, 35 scsi_hba_tran_t *, struct scsi_device *); 36 static int pmcs_scsa_start(struct scsi_address *, struct scsi_pkt *); 37 static int pmcs_scsa_abort(struct scsi_address *, struct scsi_pkt *); 38 static int pmcs_scsa_reset(struct scsi_address *, int); 39 static int pmcs_scsi_reset_notify(struct scsi_address *, int, 40 void (*)(caddr_t), caddr_t); 41 static int pmcs_scsa_getcap(struct scsi_address *, char *, int); 42 static int pmcs_scsa_setcap(struct scsi_address *, char *, int, int); 43 static int pmcs_scsa_setup_pkt(struct scsi_pkt *, int (*)(caddr_t), caddr_t); 44 static void pmcs_scsa_teardown_pkt(struct scsi_pkt *); 45 46 static int pmcs_smp_init(dev_info_t *, dev_info_t *, smp_hba_tran_t *, 47 smp_device_t *); 48 static void pmcs_smp_free(dev_info_t *, dev_info_t *, smp_hba_tran_t *, 49 smp_device_t *); 50 static int pmcs_smp_start(struct smp_pkt *); 51 52 static int pmcs_scsi_quiesce(dev_info_t *); 53 static int pmcs_scsi_unquiesce(dev_info_t *); 54 55 static int pmcs_cap(struct scsi_address *, char *, int, int, int); 56 static pmcs_xscsi_t * 57 pmcs_addr2xp(struct scsi_address *, uint64_t *, pmcs_cmd_t *); 58 static int pmcs_SAS_run(pmcs_cmd_t *, pmcwork_t *); 59 static void pmcs_SAS_done(pmcs_hw_t *, pmcwork_t *, uint32_t *); 60 61 static int pmcs_SATA_run(pmcs_cmd_t *, pmcwork_t *); 62 static void pmcs_SATA_done(pmcs_hw_t *, pmcwork_t *, uint32_t *); 63 static uint8_t pmcs_SATA_rwparm(uint8_t *, uint32_t *, uint64_t *, uint64_t); 64 65 static void pmcs_ioerror(pmcs_hw_t *, pmcs_dtype_t pmcs_dtype, 66 pmcwork_t *, uint32_t *, uint32_t); 67 68 69 int 70 pmcs_scsa_init(pmcs_hw_t *pwp, const ddi_dma_attr_t *ap) 71 { 72 scsi_hba_tran_t *tran; 73 ddi_dma_attr_t pmcs_scsa_dattr; 74 int flags; 75 76 (void) memcpy(&pmcs_scsa_dattr, ap, sizeof (ddi_dma_attr_t)); 77 pmcs_scsa_dattr.dma_attr_sgllen = 78 ((PMCS_SGL_NCHUNKS - 1) * (PMCS_MAX_CHUNKS - 1)) + PMCS_SGL_NCHUNKS; 79 pmcs_scsa_dattr.dma_attr_flags = DDI_DMA_RELAXED_ORDERING; 80 pmcs_scsa_dattr.dma_attr_flags |= DDI_DMA_FLAGERR; 81 82 /* 83 * Allocate a transport structure 84 */ 85 tran = scsi_hba_tran_alloc(pwp->dip, SCSI_HBA_CANSLEEP); 86 if (tran == NULL) { 87 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 88 "scsi_hba_tran_alloc failed"); 89 return (DDI_FAILURE); 90 } 91 92 tran->tran_hba_private = pwp; 93 tran->tran_tgt_init = pmcs_scsa_tran_tgt_init; 94 tran->tran_tgt_free = pmcs_scsa_tran_tgt_free; 95 tran->tran_start = pmcs_scsa_start; 96 tran->tran_abort = pmcs_scsa_abort; 97 tran->tran_reset = pmcs_scsa_reset; 98 tran->tran_reset_notify = pmcs_scsi_reset_notify; 99 tran->tran_getcap = pmcs_scsa_getcap; 100 tran->tran_setcap = pmcs_scsa_setcap; 101 tran->tran_setup_pkt = pmcs_scsa_setup_pkt; 102 tran->tran_teardown_pkt = pmcs_scsa_teardown_pkt; 103 tran->tran_quiesce = pmcs_scsi_quiesce; 104 tran->tran_unquiesce = pmcs_scsi_unquiesce; 105 tran->tran_interconnect_type = INTERCONNECT_SAS; 106 tran->tran_hba_len = sizeof (pmcs_cmd_t); 107 108 /* 109 * Attach this instance of the hba 110 */ 111 112 flags = SCSI_HBA_TRAN_SCB | SCSI_HBA_TRAN_CDB | SCSI_HBA_ADDR_COMPLEX | 113 SCSI_HBA_TRAN_PHCI | SCSI_HBA_HBA; 114 115 if (scsi_hba_attach_setup(pwp->dip, &pmcs_scsa_dattr, tran, flags)) { 116 scsi_hba_tran_free(tran); 117 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 118 "scsi_hba_attach failed"); 119 return (DDI_FAILURE); 120 } 121 pwp->tran = tran; 122 123 /* 124 * Attach the SMP part of this hba 125 */ 126 pwp->smp_tran = smp_hba_tran_alloc(pwp->dip); 127 ASSERT(pwp->smp_tran != NULL); 128 pwp->smp_tran->smp_tran_hba_private = pwp; 129 pwp->smp_tran->smp_tran_init = pmcs_smp_init; 130 pwp->smp_tran->smp_tran_free = pmcs_smp_free; 131 pwp->smp_tran->smp_tran_start = pmcs_smp_start; 132 133 if (smp_hba_attach_setup(pwp->dip, pwp->smp_tran) != DDI_SUCCESS) { 134 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 135 "smp_hba_attach failed"); 136 smp_hba_tran_free(pwp->smp_tran); 137 pwp->smp_tran = NULL; 138 scsi_hba_tran_free(tran); 139 return (DDI_FAILURE); 140 } 141 142 return (DDI_SUCCESS); 143 } 144 145 /* 146 * SCSA entry points 147 */ 148 149 static int 150 pmcs_scsa_tran_tgt_init(dev_info_t *hba_dip, dev_info_t *tgt_dip, 151 scsi_hba_tran_t *tran, struct scsi_device *sd) 152 { 153 pmcs_hw_t *pwp = NULL; 154 int rval; 155 char *variant_prop = "sata"; 156 char *tgt_port = NULL, *ua = NULL; 157 pmcs_xscsi_t *tgt = NULL; 158 pmcs_iport_t *iport; 159 pmcs_lun_t *lun = NULL; 160 pmcs_phy_t *phyp = NULL; 161 uint64_t lun_num; 162 boolean_t got_scratch = B_FALSE; 163 164 /* 165 * First, make sure we're an iport and get the pointer to the HBA 166 * node's softstate 167 */ 168 if (scsi_hba_iport_unit_address(hba_dip) == NULL) { 169 pmcs_prt(TRAN2PMC(tran), PMCS_PRT_DEBUG_CONFIG, NULL, NULL, 170 "%s: We don't enumerate devices on the HBA node", __func__); 171 goto tgt_init_fail; 172 } 173 174 pwp = ITRAN2PMC(tran); 175 iport = ITRAN2IPORT(tran); 176 177 /* 178 * Get the unit-address 179 */ 180 ua = scsi_device_unit_address(sd); 181 if (ua == NULL) { 182 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, NULL, NULL, 183 "%s: Couldn't get UA", __func__); 184 pwp = NULL; 185 goto tgt_init_fail; 186 } 187 pmcs_prt(pwp, PMCS_PRT_DEBUG3, NULL, NULL, 188 "got ua '%s'", ua); 189 190 /* 191 * Get the target address 192 */ 193 rval = scsi_device_prop_lookup_string(sd, SCSI_DEVICE_PROP_PATH, 194 SCSI_ADDR_PROP_TARGET_PORT, &tgt_port); 195 if (rval != DDI_PROP_SUCCESS) { 196 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, NULL, NULL, 197 "Couldn't get target UA"); 198 pwp = NULL; 199 goto tgt_init_fail; 200 } 201 pmcs_prt(pwp, PMCS_PRT_DEBUG3, NULL, NULL, 202 "got tgt_port '%s'", tgt_port); 203 204 /* 205 * Validate that this tran_tgt_init is for an active iport. 206 */ 207 if (iport->ua_state == UA_INACTIVE) { 208 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 209 "%s: Got tran_tgt_init on inactive iport for '%s'", 210 __func__, tgt_port); 211 pwp = NULL; 212 goto tgt_init_fail; 213 } 214 215 /* 216 * Since we're going to wait for scratch, be sure to acquire it while 217 * we're not holding any other locks 218 */ 219 (void) pmcs_acquire_scratch(pwp, B_TRUE); 220 got_scratch = B_TRUE; 221 222 mutex_enter(&pwp->lock); 223 224 /* 225 * See if there's already a target softstate. If not, allocate one. 226 */ 227 tgt = pmcs_get_target(iport, tgt_port, B_TRUE); 228 229 if (tgt == NULL) { 230 pmcs_prt(pwp, PMCS_PRT_DEBUG2, NULL, NULL, "%s: " 231 "No tgt for tgt_port (%s)", __func__, tgt_port); 232 goto tgt_init_fail; 233 } 234 235 phyp = tgt->phy; 236 if (!IS_ROOT_PHY(phyp)) { 237 pmcs_inc_phy_ref_count(phyp); 238 } 239 ASSERT(mutex_owned(&phyp->phy_lock)); 240 241 pmcs_prt(pwp, PMCS_PRT_DEBUG2, phyp, tgt, "@%s tgt = 0x%p, dip = 0x%p", 242 ua, (void *)tgt, (void *)tgt_dip); 243 244 /* Now get the lun */ 245 lun_num = scsi_device_prop_get_int64(sd, SCSI_DEVICE_PROP_PATH, 246 SCSI_ADDR_PROP_LUN64, SCSI_LUN64_ILLEGAL); 247 if (lun_num == SCSI_LUN64_ILLEGAL) { 248 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, tgt, 249 "No LUN for tgt %p", (void *)tgt); 250 goto tgt_init_fail; 251 } 252 253 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, tgt, "%s: @%s tgt 0x%p phy " 254 "0x%p (%s)", __func__, ua, (void *)tgt, (void *)phyp, phyp->path); 255 256 mutex_enter(&tgt->statlock); 257 tgt->dtype = phyp->dtype; 258 if (tgt->dtype != SAS && tgt->dtype != SATA) { 259 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, tgt, 260 "PHY 0x%p went away?", (void *)phyp); 261 goto tgt_init_fail; 262 } 263 264 /* We don't support SATA devices at LUN > 0. */ 265 if ((tgt->dtype == SATA) && (lun_num > 0)) { 266 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, tgt, 267 "%s: No support for SATA devices at LUN > 0 " 268 "(target = 0x%p)", __func__, (void *)tgt); 269 goto tgt_init_fail; 270 } 271 272 /* 273 * Allocate LU soft state. We use ddi_soft_state_bystr_zalloc instead 274 * of kmem_alloc because ddi_soft_state_bystr_zalloc allows us to 275 * verify that the framework never tries to initialize two scsi_device 276 * structures with the same unit-address at the same time. 277 */ 278 if (ddi_soft_state_bystr_zalloc(tgt->lun_sstate, ua) != DDI_SUCCESS) { 279 pmcs_prt(pwp, PMCS_PRT_DEBUG2, phyp, tgt, 280 "Couldn't allocate LU soft state"); 281 goto tgt_init_fail; 282 } 283 284 lun = ddi_soft_state_bystr_get(tgt->lun_sstate, ua); 285 if (lun == NULL) { 286 pmcs_prt(pwp, PMCS_PRT_DEBUG2, phyp, tgt, 287 "Couldn't get LU soft state"); 288 goto tgt_init_fail; 289 } 290 scsi_device_hba_private_set(sd, lun); 291 lun->lun_num = lun_num; 292 293 /* convert the scsi_lun64_t value to SCSI standard form */ 294 lun->scsi_lun = scsi_lun64_to_lun(lun_num); 295 296 ASSERT(strlen(ua) < (PMCS_MAX_UA_SIZE - 1)); 297 bcopy(ua, lun->unit_address, strnlen(ua, PMCS_MAX_UA_SIZE - 1)); 298 299 lun->target = tgt; 300 301 /* 302 * If this is the first tran_tgt_init, add this target to our list 303 */ 304 if (tgt->target_num == PMCS_INVALID_TARGET_NUM) { 305 int target; 306 for (target = 0; target < pwp->max_dev; target++) { 307 if (pwp->targets[target] != NULL) { 308 continue; 309 } 310 311 pwp->targets[target] = tgt; 312 tgt->target_num = (uint16_t)target; 313 break; 314 } 315 316 if (target == pwp->max_dev) { 317 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, tgt, 318 "Target list full."); 319 goto tgt_init_fail; 320 } 321 } 322 323 tgt->dip = sd->sd_dev; 324 lun->sd = sd; 325 list_insert_tail(&tgt->lun_list, lun); 326 327 if (!pmcs_assign_device(pwp, tgt)) { 328 pmcs_release_scratch(pwp); 329 pwp->targets[tgt->target_num] = NULL; 330 tgt->target_num = PMCS_INVALID_TARGET_NUM; 331 tgt->phy = NULL; 332 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, tgt, 333 "%s: pmcs_assign_device failed for target 0x%p", 334 __func__, (void *)tgt); 335 goto tgt_init_fail; 336 } 337 338 pmcs_release_scratch(pwp); 339 tgt->ref_count++; 340 341 (void) scsi_device_prop_update_int(sd, SCSI_DEVICE_PROP_PATH, 342 SCSI_ADDR_PROP_TARGET, (uint32_t)(tgt->target_num)); 343 344 /* SM-HBA */ 345 if (tgt->dtype == SATA) { 346 /* TCR in PSARC/1997/281 opinion */ 347 (void) scsi_device_prop_update_string(sd, 348 SCSI_DEVICE_PROP_PATH, "variant", variant_prop); 349 } 350 351 tgt->phy_addressable = PMCS_PHY_ADDRESSABLE(phyp); 352 353 if (tgt->phy_addressable) { 354 (void) scsi_device_prop_update_int(sd, SCSI_DEVICE_PROP_PATH, 355 SCSI_ADDR_PROP_SATA_PHY, phyp->phynum); 356 } 357 358 /* SM-HBA */ 359 (void) pmcs_smhba_set_scsi_device_props(pwp, phyp, sd); 360 /* 361 * Make sure attached port and target port pm props are updated 362 * By passing in 0s, we're not actually updating any values, but 363 * the properties should now get updated on the node. 364 */ 365 366 mutex_exit(&tgt->statlock); 367 pmcs_update_phy_pm_props(phyp, 0, 0, B_TRUE); 368 pmcs_unlock_phy(phyp); 369 mutex_exit(&pwp->lock); 370 scsi_device_prop_free(sd, SCSI_DEVICE_PROP_PATH, tgt_port); 371 return (DDI_SUCCESS); 372 373 tgt_init_fail: 374 scsi_device_hba_private_set(sd, NULL); 375 if (got_scratch) { 376 pmcs_release_scratch(pwp); 377 } 378 if (lun) { 379 list_remove(&tgt->lun_list, lun); 380 ddi_soft_state_bystr_free(tgt->lun_sstate, ua); 381 } 382 if (phyp) { 383 mutex_exit(&tgt->statlock); 384 pmcs_unlock_phy(phyp); 385 /* 386 * phyp's ref count was incremented in pmcs_new_tport. 387 * We're failing configuration, we now need to decrement it. 388 */ 389 if (!IS_ROOT_PHY(phyp)) { 390 pmcs_dec_phy_ref_count(phyp); 391 } 392 phyp->target = NULL; 393 } 394 if (tgt && tgt->ref_count == 0) { 395 ddi_soft_state_bystr_free(iport->tgt_sstate, tgt_port); 396 } 397 if (pwp) { 398 mutex_exit(&pwp->lock); 399 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, tgt, 400 "%s: failed for @%s tgt 0x%p phy 0x%p", __func__, ua, 401 (void *)tgt, (void *)phyp); 402 } 403 if (tgt_port) { 404 scsi_device_prop_free(sd, SCSI_DEVICE_PROP_PATH, tgt_port); 405 } 406 return (DDI_FAILURE); 407 } 408 409 static void 410 pmcs_scsa_tran_tgt_free(dev_info_t *hba_dip, dev_info_t *tgt_dip, 411 scsi_hba_tran_t *tran, struct scsi_device *sd) 412 { 413 _NOTE(ARGUNUSED(hba_dip, tgt_dip)); 414 pmcs_hw_t *pwp; 415 pmcs_lun_t *lun; 416 pmcs_xscsi_t *target; 417 char *unit_address; 418 pmcs_phy_t *phyp; 419 420 if (scsi_hba_iport_unit_address(hba_dip) == NULL) { 421 pwp = TRAN2PMC(tran); 422 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, NULL, NULL, 423 "%s: We don't enumerate devices on the HBA node", __func__); 424 return; 425 } 426 427 lun = (pmcs_lun_t *)scsi_device_hba_private_get(sd); 428 429 ASSERT((lun != NULL) && (lun->target != NULL)); 430 ASSERT(lun->target->ref_count > 0); 431 432 target = lun->target; 433 unit_address = lun->unit_address; 434 list_remove(&target->lun_list, lun); 435 436 pwp = ITRAN2PMC(tran); 437 mutex_enter(&pwp->lock); 438 phyp = target->phy; 439 if (phyp) { 440 mutex_enter(&phyp->phy_lock); 441 } 442 mutex_enter(&target->statlock); 443 444 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, target, 445 "%s: for @%s tgt 0x%p phy 0x%p", __func__, unit_address, 446 (void *)target, (void *)phyp); 447 ddi_soft_state_bystr_free(lun->target->lun_sstate, unit_address); 448 449 if (target->recover_wait) { 450 mutex_exit(&target->statlock); 451 if (phyp) { 452 mutex_exit(&phyp->phy_lock); 453 } 454 mutex_exit(&pwp->lock); 455 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, target, "%s: " 456 "Target 0x%p in device state recovery, fail tran_tgt_free", 457 __func__, (void *)target); 458 return; 459 } 460 461 /* 462 * If this target still has a PHY pointer and that PHY's target pointer 463 * has been cleared, then that PHY has been reaped. In that case, there 464 * would be no need to decrement the reference count 465 */ 466 if (phyp && !IS_ROOT_PHY(phyp) && phyp->target) { 467 pmcs_dec_phy_ref_count(phyp); 468 } 469 470 if (--target->ref_count == 0) { 471 /* 472 * Remove this target from our list. The target soft 473 * state will remain, and the device will remain registered 474 * with the hardware unless/until we're told the device 475 * physically went away. 476 */ 477 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, target, 478 "%s: Free target 0x%p (vtgt %d)", __func__, (void *)target, 479 target->target_num); 480 pwp->targets[target->target_num] = NULL; 481 target->target_num = PMCS_INVALID_TARGET_NUM; 482 /* If the PHY has a pointer to this target, clear it */ 483 if (phyp && (phyp->target == target)) { 484 phyp->target = NULL; 485 } 486 target->phy = NULL; 487 if (phyp) { 488 mutex_exit(&phyp->phy_lock); 489 } 490 pmcs_destroy_target(target); 491 } else { 492 mutex_exit(&target->statlock); 493 if (phyp) { 494 mutex_exit(&phyp->phy_lock); 495 } 496 } 497 498 mutex_exit(&pwp->lock); 499 } 500 501 static int 502 pmcs_scsa_start(struct scsi_address *ap, struct scsi_pkt *pkt) 503 { 504 pmcs_cmd_t *sp = PKT2CMD(pkt); 505 pmcs_hw_t *pwp = ADDR2PMC(ap); 506 pmcs_xscsi_t *xp; 507 boolean_t blocked; 508 uint32_t hba_state; 509 510 pmcs_prt(pwp, PMCS_PRT_DEBUG2, NULL, NULL, 511 "%s: pkt %p sd %p cdb0=0x%02x dl=%lu", __func__, (void *)pkt, 512 (void *)scsi_address_device(&pkt->pkt_address), 513 pkt->pkt_cdbp[0] & 0xff, pkt->pkt_dma_len); 514 515 if (pkt->pkt_flags & FLAG_NOINTR) { 516 pmcs_prt(pwp, PMCS_PRT_DEBUG3, NULL, NULL, 517 "%s: nointr pkt", __func__); 518 return (TRAN_BADPKT); 519 } 520 521 sp->cmd_tag = 0; 522 pkt->pkt_state = pkt->pkt_statistics = 0; 523 pkt->pkt_reason = CMD_INCOMPLETE; 524 525 mutex_enter(&pwp->lock); 526 hba_state = pwp->state; 527 blocked = pwp->blocked; 528 mutex_exit(&pwp->lock); 529 530 if (hba_state != STATE_RUNNING) { 531 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 532 "%s: hba dead", __func__); 533 return (TRAN_FATAL_ERROR); 534 } 535 536 xp = pmcs_addr2xp(ap, NULL, sp); 537 if (xp == NULL) { 538 pmcs_prt(pwp, PMCS_PRT_DEBUG2, NULL, NULL, 539 "%s: dropping due to null target", __func__); 540 goto dead_target; 541 } 542 ASSERT(mutex_owned(&xp->statlock)); 543 544 /* 545 * First, check to see if the device is gone. 546 */ 547 if (xp->dev_gone) { 548 xp->actv_pkts++; 549 mutex_exit(&xp->statlock); 550 pmcs_prt(pwp, PMCS_PRT_DEBUG3, NULL, xp, 551 "%s: dropping due to dead target 0x%p", 552 __func__, (void *)xp); 553 goto dead_target; 554 } 555 556 /* 557 * If we're blocked (quiesced) just return. 558 */ 559 if (blocked) { 560 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 561 "%s: hba blocked", __func__); 562 xp->actv_pkts++; 563 mutex_exit(&xp->statlock); 564 mutex_enter(&xp->wqlock); 565 STAILQ_INSERT_TAIL(&xp->wq, sp, cmd_next); 566 mutex_exit(&xp->wqlock); 567 return (TRAN_ACCEPT); 568 } 569 570 /* 571 * If we're draining or resetting, queue and return. 572 */ 573 if (xp->draining || xp->resetting || xp->recover_wait) { 574 xp->actv_pkts++; 575 mutex_exit(&xp->statlock); 576 mutex_enter(&xp->wqlock); 577 STAILQ_INSERT_TAIL(&xp->wq, sp, cmd_next); 578 mutex_exit(&xp->wqlock); 579 pmcs_prt(pwp, PMCS_PRT_DEBUG1, NULL, xp, 580 "%s: draining/resetting/recovering (cnt %u)", 581 __func__, xp->actv_cnt); 582 /* 583 * By the time we get here, draining or 584 * resetting may have come and gone, not 585 * yet noticing that we had put something 586 * on the wait queue, so schedule a worker 587 * to look at this later. 588 */ 589 SCHEDULE_WORK(pwp, PMCS_WORK_RUN_QUEUES); 590 return (TRAN_ACCEPT); 591 } 592 593 xp->actv_pkts++; 594 mutex_exit(&xp->statlock); 595 596 /* 597 * Queue this command to the tail of the wait queue. 598 * This keeps us getting commands out of order. 599 */ 600 mutex_enter(&xp->wqlock); 601 STAILQ_INSERT_TAIL(&xp->wq, sp, cmd_next); 602 mutex_exit(&xp->wqlock); 603 604 /* 605 * Now run the queue for this device. 606 */ 607 (void) pmcs_scsa_wq_run_one(pwp, xp); 608 609 return (TRAN_ACCEPT); 610 611 dead_target: 612 pkt->pkt_state = STATE_GOT_BUS; 613 pkt->pkt_reason = CMD_DEV_GONE; 614 mutex_enter(&pwp->cq_lock); 615 STAILQ_INSERT_TAIL(&pwp->cq, sp, cmd_next); 616 PMCS_CQ_RUN_LOCKED(pwp); 617 mutex_exit(&pwp->cq_lock); 618 return (TRAN_ACCEPT); 619 } 620 621 /* Return code 1 = Success */ 622 static int 623 pmcs_scsa_abort(struct scsi_address *ap, struct scsi_pkt *pkt) 624 { 625 pmcs_hw_t *pwp = ADDR2PMC(ap); 626 pmcs_cmd_t *sp = NULL; 627 pmcs_xscsi_t *xp = NULL; 628 pmcs_phy_t *pptr = NULL; 629 pmcs_lun_t *pmcs_lun = (pmcs_lun_t *) 630 scsi_device_hba_private_get(scsi_address_device(ap)); 631 uint32_t tag; 632 uint64_t lun; 633 pmcwork_t *pwrk; 634 635 mutex_enter(&pwp->lock); 636 if (pwp->state != STATE_RUNNING) { 637 mutex_exit(&pwp->lock); 638 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 639 "%s: hba dead", __func__); 640 return (0); 641 } 642 mutex_exit(&pwp->lock); 643 644 if (pkt == NULL) { 645 if (pmcs_lun == NULL) { 646 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, "%s: " 647 "No pmcs_lun_t struct to do ABORT_ALL", __func__); 648 return (0); 649 } 650 xp = pmcs_lun->target; 651 if (xp != NULL) { 652 pptr = xp->phy; 653 } 654 if (pptr == NULL) { 655 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, xp, "%s: pkt is " 656 "NULL. No tgt/phy to do ABORT_ALL", __func__); 657 return (0); 658 } 659 pmcs_lock_phy(pptr); 660 if (pmcs_abort(pwp, pptr, 0, 1, 0)) { 661 pptr->abort_pending = 1; 662 SCHEDULE_WORK(pwp, PMCS_WORK_ABORT_HANDLE); 663 } 664 pmcs_unlock_phy(pptr); 665 return (1); 666 } 667 668 sp = PKT2CMD(pkt); 669 xp = sp->cmd_target; 670 671 if (sp->cmd_lun) { 672 lun = sp->cmd_lun->lun_num; 673 } else { 674 lun = 0; 675 } 676 if (xp == NULL) { 677 return (0); 678 } 679 680 /* 681 * See if we have a real work structure associated with this cmd. 682 */ 683 pwrk = pmcs_tag2wp(pwp, sp->cmd_tag, B_FALSE); 684 if (pwrk && pwrk->arg == sp) { 685 tag = pwrk->htag; 686 pptr = pwrk->phy; 687 pwrk->timer = 0; /* we don't time this here */ 688 ASSERT(pwrk->state == PMCS_WORK_STATE_ONCHIP); 689 mutex_exit(&pwrk->lock); 690 pmcs_lock_phy(pptr); 691 if (pptr->dtype == SAS) { 692 if (pmcs_ssp_tmf(pwp, pptr, SAS_ABORT_TASK, tag, lun, 693 NULL)) { 694 pptr->abort_pending = 1; 695 pmcs_unlock_phy(pptr); 696 SCHEDULE_WORK(pwp, PMCS_WORK_ABORT_HANDLE); 697 return (0); 698 } 699 } else { 700 /* 701 * XXX: Was the command that was active an 702 * NCQ I/O command? 703 */ 704 pptr->need_rl_ext = 1; 705 if (pmcs_sata_abort_ncq(pwp, pptr)) { 706 pptr->abort_pending = 1; 707 pmcs_unlock_phy(pptr); 708 SCHEDULE_WORK(pwp, PMCS_WORK_ABORT_HANDLE); 709 return (0); 710 } 711 } 712 pptr->abort_pending = 1; 713 pmcs_unlock_phy(pptr); 714 SCHEDULE_WORK(pwp, PMCS_WORK_ABORT_HANDLE); 715 return (1); 716 } 717 if (pwrk) { 718 mutex_exit(&pwrk->lock); 719 } 720 /* 721 * Okay, those weren't the droids we were looking for. 722 * See if the command is on any of the wait queues. 723 */ 724 mutex_enter(&xp->wqlock); 725 sp = NULL; 726 STAILQ_FOREACH(sp, &xp->wq, cmd_next) { 727 if (sp == PKT2CMD(pkt)) { 728 STAILQ_REMOVE(&xp->wq, sp, pmcs_cmd, cmd_next); 729 break; 730 } 731 } 732 mutex_exit(&xp->wqlock); 733 if (sp) { 734 pkt->pkt_reason = CMD_ABORTED; 735 pkt->pkt_statistics |= STAT_ABORTED; 736 mutex_enter(&pwp->cq_lock); 737 STAILQ_INSERT_TAIL(&pwp->cq, sp, cmd_next); 738 PMCS_CQ_RUN_LOCKED(pwp); 739 mutex_exit(&pwp->cq_lock); 740 return (1); 741 } 742 return (0); 743 } 744 745 /* 746 * SCSA reset functions 747 */ 748 static int 749 pmcs_scsa_reset(struct scsi_address *ap, int level) 750 { 751 pmcs_hw_t *pwp = ADDR2PMC(ap); 752 pmcs_phy_t *pptr; 753 pmcs_xscsi_t *xp; 754 uint64_t lun = (uint64_t)-1, *lp = NULL; 755 int rval; 756 757 mutex_enter(&pwp->lock); 758 if (pwp->state != STATE_RUNNING) { 759 mutex_exit(&pwp->lock); 760 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 761 "%s: hba dead", __func__); 762 return (0); 763 } 764 mutex_exit(&pwp->lock); 765 766 switch (level) { 767 case RESET_ALL: 768 rval = 0; 769 break; 770 case RESET_LUN: 771 /* 772 * Point lp at lun so that pmcs_addr2xp 773 * will fill out the 64 bit lun number. 774 */ 775 lp = &lun; 776 /* FALLTHROUGH */ 777 case RESET_TARGET: 778 xp = pmcs_addr2xp(ap, lp, NULL); 779 if (xp == NULL) { 780 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 781 "%s: no xp found for this scsi address", __func__); 782 return (0); 783 } 784 785 if (xp->dev_gone) { 786 mutex_exit(&xp->statlock); 787 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, xp, 788 "%s: Target 0x%p has gone away", __func__, 789 (void *)xp); 790 return (0); 791 } 792 793 /* 794 * If we're already performing this action, or if device 795 * state recovery is already running, just return failure. 796 */ 797 if (xp->resetting || xp->recover_wait) { 798 mutex_exit(&xp->statlock); 799 return (0); 800 } 801 xp->reset_wait = 0; 802 xp->reset_success = 0; 803 xp->resetting = 1; 804 pptr = xp->phy; 805 mutex_exit(&xp->statlock); 806 807 if (pmcs_reset_dev(pwp, pptr, lun)) { 808 rval = 0; 809 } else { 810 rval = 1; 811 } 812 813 mutex_enter(&xp->statlock); 814 if (rval == 1) { 815 xp->reset_success = 1; 816 } 817 if (xp->reset_wait) { 818 xp->reset_wait = 0; 819 cv_signal(&xp->reset_cv); 820 } 821 xp->resetting = 0; 822 mutex_exit(&xp->statlock); 823 SCHEDULE_WORK(pwp, PMCS_WORK_RUN_QUEUES); 824 break; 825 default: 826 rval = 0; 827 break; 828 } 829 830 return (rval); 831 } 832 833 static int 834 pmcs_scsi_reset_notify(struct scsi_address *ap, int flag, 835 void (*callback)(caddr_t), caddr_t arg) 836 { 837 pmcs_hw_t *pwp = ADDR2PMC(ap); 838 return (scsi_hba_reset_notify_setup(ap, flag, callback, arg, 839 &pwp->lock, &pwp->reset_notify_listf)); 840 } 841 842 843 static int 844 pmcs_cap(struct scsi_address *ap, char *cap, int val, int tonly, int set) 845 { 846 _NOTE(ARGUNUSED(val, tonly)); 847 int cidx, rval = 0; 848 pmcs_xscsi_t *xp; 849 850 cidx = scsi_hba_lookup_capstr(cap); 851 if (cidx == -1) { 852 return (-1); 853 } 854 855 xp = pmcs_addr2xp(ap, NULL, NULL); 856 if (xp == NULL) { 857 return (-1); 858 } 859 860 switch (cidx) { 861 case SCSI_CAP_DMA_MAX: 862 case SCSI_CAP_INITIATOR_ID: 863 if (set == 0) { 864 rval = INT_MAX; /* argh */ 865 } 866 break; 867 case SCSI_CAP_DISCONNECT: 868 case SCSI_CAP_SYNCHRONOUS: 869 case SCSI_CAP_WIDE_XFER: 870 case SCSI_CAP_PARITY: 871 case SCSI_CAP_ARQ: 872 case SCSI_CAP_UNTAGGED_QING: 873 if (set == 0) { 874 rval = 1; 875 } 876 break; 877 878 case SCSI_CAP_TAGGED_QING: 879 rval = 1; 880 break; 881 882 case SCSI_CAP_MSG_OUT: 883 case SCSI_CAP_RESET_NOTIFICATION: 884 case SCSI_CAP_QFULL_RETRIES: 885 case SCSI_CAP_QFULL_RETRY_INTERVAL: 886 break; 887 case SCSI_CAP_SCSI_VERSION: 888 if (set == 0) { 889 rval = SCSI_VERSION_3; 890 } 891 break; 892 case SCSI_CAP_INTERCONNECT_TYPE: 893 if (set) { 894 break; 895 } 896 if (xp->phy_addressable) { 897 rval = INTERCONNECT_SATA; 898 } else { 899 rval = INTERCONNECT_SAS; 900 } 901 break; 902 case SCSI_CAP_CDB_LEN: 903 if (set == 0) { 904 rval = 16; 905 } 906 break; 907 case SCSI_CAP_LUN_RESET: 908 if (set) { 909 break; 910 } 911 if (xp->dtype == SATA) { 912 rval = 0; 913 } else { 914 rval = 1; 915 } 916 break; 917 default: 918 rval = -1; 919 break; 920 } 921 mutex_exit(&xp->statlock); 922 pmcs_prt(ADDR2PMC(ap), PMCS_PRT_DEBUG3, NULL, NULL, 923 "%s: cap %s val %d set %d rval %d", 924 __func__, cap, val, set, rval); 925 return (rval); 926 } 927 928 /* 929 * Returns with statlock held if the xp is found. 930 * Fills in pmcs_cmd_t with values if pmcs_cmd_t pointer non-NULL. 931 */ 932 static pmcs_xscsi_t * 933 pmcs_addr2xp(struct scsi_address *ap, uint64_t *lp, pmcs_cmd_t *sp) 934 { 935 pmcs_xscsi_t *xp; 936 pmcs_lun_t *lun = (pmcs_lun_t *) 937 scsi_device_hba_private_get(scsi_address_device(ap)); 938 939 if ((lun == NULL) || (lun->target == NULL)) { 940 return (NULL); 941 } 942 xp = lun->target; 943 mutex_enter(&xp->statlock); 944 945 if (xp->dev_gone || (xp->phy == NULL)) { 946 /* 947 * This may be a retried packet, so it's possible cmd_target 948 * and cmd_lun may still be populated. Clear them. 949 */ 950 if (sp != NULL) { 951 sp->cmd_target = NULL; 952 sp->cmd_lun = NULL; 953 } 954 mutex_exit(&xp->statlock); 955 return (NULL); 956 } 957 958 if (sp != NULL) { 959 sp->cmd_target = xp; 960 sp->cmd_lun = lun; 961 } 962 if (lp) { 963 *lp = lun->lun_num; 964 } 965 return (xp); 966 } 967 968 static int 969 pmcs_scsa_getcap(struct scsi_address *ap, char *cap, int whom) 970 { 971 int r; 972 if (cap == NULL) { 973 return (-1); 974 } 975 r = pmcs_cap(ap, cap, 0, whom, 0); 976 return (r); 977 } 978 979 static int 980 pmcs_scsa_setcap(struct scsi_address *ap, char *cap, int value, int whom) 981 { 982 int r; 983 if (cap == NULL) { 984 return (-1); 985 } 986 r = pmcs_cap(ap, cap, value, whom, 1); 987 return (r); 988 } 989 990 static int 991 pmcs_scsa_setup_pkt(struct scsi_pkt *pkt, int (*callback)(caddr_t), 992 caddr_t cbarg) 993 { 994 _NOTE(ARGUNUSED(callback, cbarg)); 995 pmcs_cmd_t *sp = pkt->pkt_ha_private; 996 997 bzero(sp, sizeof (pmcs_cmd_t)); 998 sp->cmd_pkt = pkt; 999 return (0); 1000 } 1001 1002 static void 1003 pmcs_scsa_teardown_pkt(struct scsi_pkt *pkt) 1004 { 1005 pmcs_cmd_t *sp = pkt->pkt_ha_private; 1006 sp->cmd_target = NULL; 1007 sp->cmd_lun = NULL; 1008 } 1009 1010 static int 1011 pmcs_smp_start(struct smp_pkt *smp_pkt) 1012 { 1013 struct pmcwork *pwrk; 1014 pmcs_iport_t *iport; 1015 const uint_t rdoff = SAS_SMP_MAX_PAYLOAD; 1016 uint32_t msg[PMCS_MSG_SIZE], *ptr, htag, status; 1017 uint64_t wwn; 1018 pmcs_hw_t *pwp; 1019 pmcs_phy_t *pptr; 1020 pmcs_xscsi_t *xp; 1021 uint_t reqsz, rspsz, will_retry; 1022 int result; 1023 1024 pwp = smp_pkt->smp_pkt_address->smp_a_hba_tran->smp_tran_hba_private; 1025 bcopy(smp_pkt->smp_pkt_address->smp_a_wwn, &wwn, SAS_WWN_BYTE_SIZE); 1026 1027 pmcs_prt(pwp, PMCS_PRT_DEBUG1, NULL, NULL, 1028 "%s: starting for wwn 0x%" PRIx64, __func__, wwn); 1029 1030 will_retry = smp_pkt->smp_pkt_will_retry; 1031 1032 (void) pmcs_acquire_scratch(pwp, B_TRUE); 1033 reqsz = smp_pkt->smp_pkt_reqsize; 1034 if (reqsz > SAS_SMP_MAX_PAYLOAD) { 1035 reqsz = SAS_SMP_MAX_PAYLOAD; 1036 } 1037 (void) memcpy(pwp->scratch, smp_pkt->smp_pkt_req, reqsz); 1038 1039 rspsz = smp_pkt->smp_pkt_rspsize; 1040 if (rspsz > SAS_SMP_MAX_PAYLOAD) { 1041 rspsz = SAS_SMP_MAX_PAYLOAD; 1042 } 1043 1044 /* 1045 * The request size from the SMP driver always includes 4 bytes 1046 * for the CRC. The PMCS chip, however, doesn't want to see those 1047 * counts as part of the transfer size. 1048 */ 1049 reqsz -= 4; 1050 1051 pptr = pmcs_find_phy_by_wwn(pwp, wwn); 1052 /* PHY is now locked */ 1053 if (pptr == NULL || pptr->dtype != EXPANDER) { 1054 if (pptr) { 1055 pmcs_unlock_phy(pptr); 1056 } 1057 pmcs_release_scratch(pwp); 1058 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, NULL, 1059 "%s: could not find phy", __func__); 1060 smp_pkt->smp_pkt_reason = ENXIO; 1061 return (DDI_FAILURE); 1062 } 1063 1064 if ((pptr->iport == NULL) || !pptr->valid_device_id) { 1065 pmcs_unlock_phy(pptr); 1066 pmcs_release_scratch(pwp); 1067 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, pptr->target, 1068 "%s: Can't reach PHY %s", __func__, pptr->path); 1069 smp_pkt->smp_pkt_reason = ENXIO; 1070 return (DDI_FAILURE); 1071 } 1072 1073 pwrk = pmcs_gwork(pwp, PMCS_TAG_TYPE_WAIT, pptr); 1074 if (pwrk == NULL) { 1075 pmcs_unlock_phy(pptr); 1076 pmcs_release_scratch(pwp); 1077 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, NULL, 1078 "%s: could not get work structure", __func__); 1079 smp_pkt->smp_pkt_reason = will_retry ? EAGAIN : EBUSY; 1080 return (DDI_FAILURE); 1081 } 1082 1083 pwrk->arg = msg; 1084 pwrk->dtype = EXPANDER; 1085 mutex_enter(&pwp->iqp_lock[PMCS_IQ_OTHER]); 1086 ptr = GET_IQ_ENTRY(pwp, PMCS_IQ_OTHER); 1087 if (ptr == NULL) { 1088 pmcs_pwork(pwp, pwrk); 1089 mutex_exit(&pwp->iqp_lock[PMCS_IQ_OTHER]); 1090 pmcs_unlock_phy(pptr); 1091 pmcs_release_scratch(pwp); 1092 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 1093 "%s: could not get IQ entry", __func__); 1094 smp_pkt->smp_pkt_reason = will_retry ? EAGAIN :EBUSY; 1095 return (DDI_FAILURE); 1096 } 1097 msg[0] = LE_32(PMCS_HIPRI(pwp, PMCS_OQ_GENERAL, PMCIN_SMP_REQUEST)); 1098 msg[1] = LE_32(pwrk->htag); 1099 msg[2] = LE_32(pptr->device_id); 1100 msg[3] = LE_32(SMP_INDIRECT_RESPONSE | SMP_INDIRECT_REQUEST); 1101 msg[8] = LE_32(DWORD0(pwp->scratch_dma)); 1102 msg[9] = LE_32(DWORD1(pwp->scratch_dma)); 1103 msg[10] = LE_32(reqsz); 1104 msg[11] = 0; 1105 msg[12] = LE_32(DWORD0(pwp->scratch_dma+rdoff)); 1106 msg[13] = LE_32(DWORD1(pwp->scratch_dma+rdoff)); 1107 msg[14] = LE_32(rspsz); 1108 msg[15] = 0; 1109 1110 COPY_MESSAGE(ptr, msg, PMCS_MSG_SIZE); 1111 1112 pmcs_hold_iport(pptr->iport); 1113 iport = pptr->iport; 1114 pmcs_smp_acquire(iport); 1115 pwrk->state = PMCS_WORK_STATE_ONCHIP; 1116 htag = pwrk->htag; 1117 INC_IQ_ENTRY(pwp, PMCS_IQ_OTHER); 1118 pmcs_unlock_phy(pptr); 1119 WAIT_FOR(pwrk, smp_pkt->smp_pkt_timeout * 1000, result); 1120 pmcs_pwork(pwp, pwrk); 1121 pmcs_smp_release(iport); 1122 pmcs_rele_iport(iport); 1123 pmcs_lock_phy(pptr); 1124 if (result) { 1125 pmcs_timed_out(pwp, htag, __func__); 1126 if (pmcs_abort(pwp, pptr, htag, 0, 0)) { 1127 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, pptr, pptr->target, 1128 "%s: Unable to issue SMP ABORT for htag 0x%08x", 1129 __func__, htag); 1130 } else { 1131 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, pptr, pptr->target, 1132 "%s: Issuing SMP ABORT for htag 0x%08x", 1133 __func__, htag); 1134 } 1135 pmcs_unlock_phy(pptr); 1136 pmcs_release_scratch(pwp); 1137 smp_pkt->smp_pkt_reason = ETIMEDOUT; 1138 return (DDI_FAILURE); 1139 } 1140 status = LE_32(msg[2]); 1141 if (status == PMCOUT_STATUS_OVERFLOW) { 1142 status = PMCOUT_STATUS_OK; 1143 smp_pkt->smp_pkt_reason = EOVERFLOW; 1144 } 1145 if (status != PMCOUT_STATUS_OK) { 1146 const char *emsg = pmcs_status_str(status); 1147 if (emsg == NULL) { 1148 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, pptr, pptr->target, 1149 "SMP operation failed (0x%x)", status); 1150 } else { 1151 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, pptr, pptr->target, 1152 "SMP operation failed (%s)", emsg); 1153 } 1154 1155 if ((status == PMCOUT_STATUS_ERROR_HW_TIMEOUT) || 1156 (status == PMCOUT_STATUS_IO_XFER_OPEN_RETRY_TIMEOUT)) { 1157 smp_pkt->smp_pkt_reason = 1158 will_retry ? EAGAIN : ETIMEDOUT; 1159 result = DDI_FAILURE; 1160 } else if (status == 1161 PMCOUT_STATUS_OPEN_CNX_ERROR_IT_NEXUS_LOSS) { 1162 xp = pptr->target; 1163 if (xp == NULL) { 1164 smp_pkt->smp_pkt_reason = EIO; 1165 result = DDI_FAILURE; 1166 goto out; 1167 } 1168 if (xp->dev_state != 1169 PMCS_DEVICE_STATE_NON_OPERATIONAL) { 1170 xp->dev_state = 1171 PMCS_DEVICE_STATE_NON_OPERATIONAL; 1172 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, xp->phy, 1173 xp, "%s: Got _IT_NEXUS_LOSS SMP status. " 1174 "Tgt(0x%p) dev_state set to " 1175 "_NON_OPERATIONAL", __func__, 1176 (void *)xp); 1177 } 1178 /* ABORT any pending commands related to this device */ 1179 if (pmcs_abort(pwp, pptr, pptr->device_id, 1, 1) != 0) { 1180 pptr->abort_pending = 1; 1181 smp_pkt->smp_pkt_reason = EIO; 1182 result = DDI_FAILURE; 1183 } 1184 } else { 1185 smp_pkt->smp_pkt_reason = will_retry ? EAGAIN : EIO; 1186 result = DDI_FAILURE; 1187 } 1188 } else { 1189 (void) memcpy(smp_pkt->smp_pkt_rsp, 1190 &((uint8_t *)pwp->scratch)[rdoff], rspsz); 1191 if (smp_pkt->smp_pkt_reason == EOVERFLOW) { 1192 result = DDI_FAILURE; 1193 } else { 1194 result = DDI_SUCCESS; 1195 } 1196 } 1197 out: 1198 pmcs_prt(pwp, PMCS_PRT_DEBUG1, pptr, pptr->target, 1199 "%s: done for wwn 0x%" PRIx64, __func__, wwn); 1200 1201 pmcs_unlock_phy(pptr); 1202 pmcs_release_scratch(pwp); 1203 return (result); 1204 } 1205 1206 static int 1207 pmcs_smp_init(dev_info_t *self, dev_info_t *child, 1208 smp_hba_tran_t *tran, smp_device_t *smp_sd) 1209 { 1210 _NOTE(ARGUNUSED(tran, smp_sd)); 1211 pmcs_iport_t *iport; 1212 pmcs_hw_t *pwp; 1213 pmcs_xscsi_t *tgt; 1214 pmcs_phy_t *phy, *pphy; 1215 uint64_t wwn; 1216 char *addr, *tgt_port; 1217 int ua_form = 1; 1218 1219 iport = ddi_get_soft_state(pmcs_iport_softstate, 1220 ddi_get_instance(self)); 1221 ASSERT(iport); 1222 if (iport == NULL) 1223 return (DDI_FAILURE); 1224 pwp = iport->pwp; 1225 ASSERT(pwp); 1226 if (pwp == NULL) 1227 return (DDI_FAILURE); 1228 1229 /* Get "target-port" prop from devinfo node */ 1230 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, child, 1231 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1232 SCSI_ADDR_PROP_TARGET_PORT, &tgt_port) != DDI_SUCCESS) { 1233 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, "%s: Failed to " 1234 "lookup prop ("SCSI_ADDR_PROP_TARGET_PORT")", __func__); 1235 /* Dont fail _smp_init() because we couldnt get/set a prop */ 1236 return (DDI_SUCCESS); 1237 } 1238 1239 /* 1240 * Validate that this tran_tgt_init is for an active iport. 1241 */ 1242 if (iport->ua_state == UA_INACTIVE) { 1243 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 1244 "%s: Init on inactive iport for '%s'", __func__, tgt_port); 1245 ddi_prop_free(tgt_port); 1246 return (DDI_FAILURE); 1247 } 1248 1249 mutex_enter(&pwp->lock); 1250 1251 /* Retrieve softstate using unit-address */ 1252 tgt = pmcs_get_target(iport, tgt_port, B_TRUE); 1253 if (tgt == NULL) { 1254 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 1255 "%s: tgt softstate not found", __func__); 1256 ddi_prop_free(tgt_port); 1257 mutex_exit(&pwp->lock); 1258 return (DDI_FAILURE); 1259 } 1260 1261 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, NULL, tgt, "%s: %s (%s)", 1262 __func__, ddi_get_name(child), tgt_port); 1263 1264 mutex_enter(&tgt->statlock); 1265 phy = tgt->phy; 1266 ASSERT(mutex_owned(&phy->phy_lock)); 1267 1268 if (IS_ROOT_PHY(phy)) { 1269 /* Expander attached to HBA - don't ref_count it */ 1270 wwn = pwp->sas_wwns[0]; 1271 } else { 1272 pmcs_inc_phy_ref_count(phy); 1273 1274 /* 1275 * Parent (in topology) is also an expander 1276 * Now that we've increased the ref count on phy, it's OK 1277 * to drop the lock so we can acquire the parent's lock. 1278 */ 1279 pphy = phy->parent; 1280 mutex_exit(&tgt->statlock); 1281 pmcs_unlock_phy(phy); 1282 pmcs_lock_phy(pphy); 1283 wwn = pmcs_barray2wwn(pphy->sas_address); 1284 pmcs_unlock_phy(pphy); 1285 pmcs_lock_phy(phy); 1286 mutex_enter(&tgt->statlock); 1287 } 1288 1289 /* 1290 * If this is the 1st smp_init, add this to our list. 1291 */ 1292 if (tgt->target_num == PMCS_INVALID_TARGET_NUM) { 1293 int target; 1294 for (target = 0; target < pwp->max_dev; target++) { 1295 if (pwp->targets[target] != NULL) { 1296 continue; 1297 } 1298 1299 pwp->targets[target] = tgt; 1300 tgt->target_num = (uint16_t)target; 1301 tgt->assigned = 1; 1302 tgt->dev_state = PMCS_DEVICE_STATE_OPERATIONAL; 1303 break; 1304 } 1305 1306 if (target == pwp->max_dev) { 1307 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, NULL, NULL, 1308 "Target list full."); 1309 goto smp_init_fail; 1310 } 1311 } 1312 1313 if (!pmcs_assign_device(pwp, tgt)) { 1314 pwp->targets[tgt->target_num] = NULL; 1315 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, NULL, tgt, 1316 "%s: pmcs_assign_device failed for target 0x%p", 1317 __func__, (void *)tgt); 1318 goto smp_init_fail; 1319 } 1320 1321 /* 1322 * Update the attached port and target port pm properties 1323 */ 1324 tgt->smpd = smp_sd; 1325 1326 pmcs_unlock_phy(phy); 1327 mutex_exit(&pwp->lock); 1328 1329 tgt->ref_count++; 1330 tgt->dtype = phy->dtype; 1331 mutex_exit(&tgt->statlock); 1332 1333 pmcs_update_phy_pm_props(phy, 0, 0, B_TRUE); 1334 1335 addr = scsi_wwn_to_wwnstr(wwn, ua_form, NULL); 1336 if (smp_device_prop_update_string(smp_sd, SCSI_ADDR_PROP_ATTACHED_PORT, 1337 addr) != DDI_SUCCESS) { 1338 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, "%s: Failed to set " 1339 "prop ("SCSI_ADDR_PROP_ATTACHED_PORT")", __func__); 1340 } 1341 (void) scsi_free_wwnstr(addr); 1342 ddi_prop_free(tgt_port); 1343 return (DDI_SUCCESS); 1344 1345 smp_init_fail: 1346 tgt->phy = NULL; 1347 tgt->target_num = PMCS_INVALID_TARGET_NUM; 1348 phy->target = NULL; 1349 if (!IS_ROOT_PHY(phy)) { 1350 pmcs_dec_phy_ref_count(phy); 1351 } 1352 mutex_exit(&tgt->statlock); 1353 pmcs_unlock_phy(phy); 1354 mutex_exit(&pwp->lock); 1355 ddi_soft_state_bystr_free(iport->tgt_sstate, tgt->unit_address); 1356 ddi_prop_free(tgt_port); 1357 return (DDI_FAILURE); 1358 } 1359 1360 static void 1361 pmcs_smp_free(dev_info_t *self, dev_info_t *child, 1362 smp_hba_tran_t *tran, smp_device_t *smp) 1363 { 1364 _NOTE(ARGUNUSED(tran, smp)); 1365 pmcs_iport_t *iport; 1366 pmcs_hw_t *pwp; 1367 pmcs_xscsi_t *tgt; 1368 pmcs_phy_t *phyp; 1369 char *tgt_port; 1370 1371 iport = ddi_get_soft_state(pmcs_iport_softstate, 1372 ddi_get_instance(self)); 1373 ASSERT(iport); 1374 if (iport == NULL) 1375 return; 1376 1377 pwp = iport->pwp; 1378 if (pwp == NULL) 1379 return; 1380 ASSERT(pwp); 1381 1382 /* Get "target-port" prop from devinfo node */ 1383 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, child, 1384 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1385 SCSI_ADDR_PROP_TARGET_PORT, &tgt_port) != DDI_SUCCESS) { 1386 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, "%s: Failed to " 1387 "lookup prop ("SCSI_ADDR_PROP_TARGET_PORT")", __func__); 1388 return; 1389 } 1390 1391 /* Retrieve softstate using unit-address */ 1392 mutex_enter(&pwp->lock); 1393 tgt = ddi_soft_state_bystr_get(iport->tgt_sstate, tgt_port); 1394 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, NULL, tgt, "%s: %s (%s)", __func__, 1395 ddi_get_name(child), tgt_port); 1396 ddi_prop_free(tgt_port); 1397 1398 if (tgt == NULL) { 1399 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 1400 "%s: tgt softstate not found", __func__); 1401 mutex_exit(&pwp->lock); 1402 return; 1403 } 1404 1405 phyp = tgt->phy; 1406 if (phyp) { 1407 mutex_enter(&phyp->phy_lock); 1408 if (!IS_ROOT_PHY(phyp)) { 1409 pmcs_dec_phy_ref_count(phyp); 1410 } 1411 } 1412 mutex_enter(&tgt->statlock); 1413 1414 if (--tgt->ref_count == 0) { 1415 /* 1416 * Remove this target from our list. The softstate 1417 * will remain, and the device will remain registered 1418 * with the hardware unless/until we're told that the 1419 * device physically went away. 1420 */ 1421 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, NULL, tgt, 1422 "Removing target 0x%p (vtgt %d) from target list", 1423 (void *)tgt, tgt->target_num); 1424 pwp->targets[tgt->target_num] = NULL; 1425 tgt->target_num = PMCS_INVALID_TARGET_NUM; 1426 /* If the PHY has a pointer to this target, clear it */ 1427 if (phyp && (phyp->target == tgt)) { 1428 phyp->target = NULL; 1429 } 1430 tgt->phy = NULL; 1431 pmcs_destroy_target(tgt); 1432 } else { 1433 mutex_exit(&tgt->statlock); 1434 } 1435 1436 if (phyp) { 1437 mutex_exit(&phyp->phy_lock); 1438 } 1439 mutex_exit(&pwp->lock); 1440 } 1441 1442 static int 1443 pmcs_scsi_quiesce(dev_info_t *dip) 1444 { 1445 pmcs_hw_t *pwp; 1446 int totactive = -1; 1447 pmcs_xscsi_t *xp; 1448 uint16_t target; 1449 1450 if (ddi_get_soft_state(pmcs_iport_softstate, ddi_get_instance(dip))) 1451 return (0); /* iport */ 1452 1453 pwp = ddi_get_soft_state(pmcs_softc_state, ddi_get_instance(dip)); 1454 if (pwp == NULL) { 1455 return (-1); 1456 } 1457 mutex_enter(&pwp->lock); 1458 if (pwp->state != STATE_RUNNING) { 1459 mutex_exit(&pwp->lock); 1460 return (-1); 1461 } 1462 1463 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, "%s called", __func__); 1464 pwp->quiesced = pwp->blocked = 1; 1465 while (totactive) { 1466 totactive = 0; 1467 for (target = 0; target < pwp->max_dev; target++) { 1468 xp = pwp->targets[target]; 1469 if (xp == NULL) { 1470 continue; 1471 } 1472 mutex_enter(&xp->statlock); 1473 if (xp->actv_cnt) { 1474 totactive += xp->actv_cnt; 1475 xp->draining = 1; 1476 } 1477 mutex_exit(&xp->statlock); 1478 } 1479 if (totactive) { 1480 cv_wait(&pwp->drain_cv, &pwp->lock); 1481 } 1482 /* 1483 * The pwp->blocked may have been reset. e.g a SCSI bus reset 1484 */ 1485 pwp->blocked = 1; 1486 } 1487 1488 for (target = 0; target < pwp->max_dev; target++) { 1489 xp = pwp->targets[target]; 1490 if (xp == NULL) { 1491 continue; 1492 } 1493 mutex_enter(&xp->statlock); 1494 xp->draining = 0; 1495 mutex_exit(&xp->statlock); 1496 } 1497 1498 mutex_exit(&pwp->lock); 1499 if (totactive == 0) { 1500 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, xp, 1501 "%s drain complete", __func__); 1502 } 1503 return (0); 1504 } 1505 1506 static int 1507 pmcs_scsi_unquiesce(dev_info_t *dip) 1508 { 1509 pmcs_hw_t *pwp; 1510 1511 if (ddi_get_soft_state(pmcs_iport_softstate, ddi_get_instance(dip))) 1512 return (0); /* iport */ 1513 1514 pwp = ddi_get_soft_state(pmcs_softc_state, ddi_get_instance(dip)); 1515 if (pwp == NULL) { 1516 return (-1); 1517 } 1518 mutex_enter(&pwp->lock); 1519 if (pwp->state != STATE_RUNNING) { 1520 mutex_exit(&pwp->lock); 1521 return (-1); 1522 } 1523 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, "%s called", __func__); 1524 pwp->blocked = pwp->quiesced = 0; 1525 mutex_exit(&pwp->lock); 1526 1527 /* 1528 * Run all pending commands. 1529 */ 1530 pmcs_scsa_wq_run(pwp); 1531 1532 /* 1533 * Complete all completed commands. 1534 * This also unlocks us. 1535 */ 1536 PMCS_CQ_RUN(pwp); 1537 return (0); 1538 } 1539 1540 /* 1541 * Start commands for a particular device 1542 * If the actual start of a command fails, return B_FALSE. Any other result 1543 * is a B_TRUE return. 1544 */ 1545 boolean_t 1546 pmcs_scsa_wq_run_one(pmcs_hw_t *pwp, pmcs_xscsi_t *xp) 1547 { 1548 pmcs_cmd_t *sp; 1549 pmcs_phy_t *phyp; 1550 pmcwork_t *pwrk; 1551 boolean_t run_one, blocked; 1552 int rval; 1553 1554 /* 1555 * First, check to see if we're blocked or resource limited 1556 */ 1557 mutex_enter(&pwp->lock); 1558 blocked = pwp->blocked; 1559 /* 1560 * If resource_limited is set, we're resource constrained and 1561 * we will run only one work request for this target. 1562 */ 1563 run_one = pwp->resource_limited; 1564 mutex_exit(&pwp->lock); 1565 1566 if (blocked) { 1567 /* Queues will get restarted when we get unblocked */ 1568 return (B_TRUE); 1569 } 1570 1571 /* 1572 * Might as well verify the queue is not empty before moving on 1573 */ 1574 mutex_enter(&xp->wqlock); 1575 if (STAILQ_EMPTY(&xp->wq)) { 1576 mutex_exit(&xp->wqlock); 1577 return (B_TRUE); 1578 } 1579 mutex_exit(&xp->wqlock); 1580 1581 /* 1582 * If we're draining or resetting, just reschedule work queue and bail. 1583 */ 1584 mutex_enter(&xp->statlock); 1585 if (xp->draining || xp->resetting || xp->special_running || 1586 xp->special_needed) { 1587 mutex_exit(&xp->statlock); 1588 SCHEDULE_WORK(pwp, PMCS_WORK_RUN_QUEUES); 1589 return (B_TRUE); 1590 } 1591 1592 /* 1593 * Next, check to see if the target is gone. 1594 */ 1595 if (xp->dev_gone) { 1596 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, xp, 1597 "%s: Flushing wait queue for dead tgt 0x%p", __func__, 1598 (void *)xp); 1599 pmcs_flush_target_queues(pwp, xp, PMCS_TGT_WAIT_QUEUE); 1600 mutex_exit(&xp->statlock); 1601 return (B_TRUE); 1602 } 1603 1604 /* 1605 * Increment the PHY's ref_count now so we know it won't go away 1606 * after we drop the target lock. Drop it before returning. If the 1607 * PHY dies, the commands we attempt to send will fail, but at least 1608 * we know we have a real PHY pointer. 1609 */ 1610 phyp = xp->phy; 1611 pmcs_inc_phy_ref_count(phyp); 1612 mutex_exit(&xp->statlock); 1613 1614 mutex_enter(&xp->wqlock); 1615 while ((sp = STAILQ_FIRST(&xp->wq)) != NULL) { 1616 pwrk = pmcs_gwork(pwp, PMCS_TAG_TYPE_CBACK, phyp); 1617 if (pwrk == NULL) { 1618 mutex_exit(&xp->wqlock); 1619 mutex_enter(&pwp->lock); 1620 if (pwp->resource_limited == 0) { 1621 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL, 1622 "%s: out of work structures", __func__); 1623 } 1624 pwp->resource_limited = 1; 1625 SCHEDULE_WORK(pwp, PMCS_WORK_RUN_QUEUES); 1626 mutex_exit(&pwp->lock); 1627 return (B_FALSE); 1628 } 1629 STAILQ_REMOVE_HEAD(&xp->wq, cmd_next); 1630 mutex_exit(&xp->wqlock); 1631 1632 pwrk->xp = xp; 1633 pwrk->arg = sp; 1634 pwrk->timer = 0; 1635 sp->cmd_tag = pwrk->htag; 1636 1637 pwrk->dtype = xp->dtype; 1638 1639 if (xp->dtype == SAS) { 1640 pwrk->ptr = (void *) pmcs_SAS_done; 1641 if ((rval = pmcs_SAS_run(sp, pwrk)) != 0) { 1642 if (rval != PMCS_WQ_RUN_FAIL_RES_CMP) { 1643 sp->cmd_tag = NULL; 1644 } 1645 pmcs_dec_phy_ref_count(phyp); 1646 pmcs_pwork(pwp, pwrk); 1647 SCHEDULE_WORK(pwp, PMCS_WORK_RUN_QUEUES); 1648 if (rval == PMCS_WQ_RUN_FAIL_RES) { 1649 return (B_FALSE); 1650 } else { 1651 return (B_TRUE); 1652 } 1653 } 1654 } else { 1655 ASSERT(xp->dtype == SATA); 1656 pwrk->ptr = (void *) pmcs_SATA_done; 1657 if ((rval = pmcs_SATA_run(sp, pwrk)) != 0) { 1658 sp->cmd_tag = NULL; 1659 pmcs_dec_phy_ref_count(phyp); 1660 pmcs_pwork(pwp, pwrk); 1661 SCHEDULE_WORK(pwp, PMCS_WORK_RUN_QUEUES); 1662 if (rval == PMCS_WQ_RUN_FAIL_RES) { 1663 return (B_FALSE); 1664 } else { 1665 return (B_TRUE); 1666 } 1667 } 1668 } 1669 1670 if (run_one) { 1671 goto wq_out; 1672 } 1673 mutex_enter(&xp->wqlock); 1674 } 1675 1676 mutex_exit(&xp->wqlock); 1677 1678 wq_out: 1679 pmcs_dec_phy_ref_count(phyp); 1680 return (B_TRUE); 1681 } 1682 1683 /* 1684 * Start commands for all devices. 1685 */ 1686 void 1687 pmcs_scsa_wq_run(pmcs_hw_t *pwp) 1688 { 1689 pmcs_xscsi_t *xp; 1690 uint16_t target_start, target; 1691 boolean_t rval = B_TRUE; 1692 1693 mutex_enter(&pwp->lock); 1694 target_start = pwp->last_wq_dev; 1695 target = target_start; 1696 1697 do { 1698 xp = pwp->targets[target]; 1699 if ((xp == NULL) || (STAILQ_EMPTY(&xp->wq))) { 1700 if (++target == pwp->max_dev) { 1701 target = 0; 1702 } 1703 continue; 1704 } 1705 1706 mutex_exit(&pwp->lock); 1707 rval = pmcs_scsa_wq_run_one(pwp, xp); 1708 mutex_enter(&pwp->lock); 1709 1710 if (rval == B_FALSE) { 1711 break; 1712 } 1713 1714 if (++target == pwp->max_dev) { 1715 target = 0; 1716 } 1717 } while (target != target_start); 1718 1719 if (rval) { 1720 /* 1721 * If we were resource limited, but apparently are not now, 1722 * reschedule the work queues anyway. 1723 */ 1724 if (pwp->resource_limited) { 1725 SCHEDULE_WORK(pwp, PMCS_WORK_RUN_QUEUES); 1726 } 1727 pwp->resource_limited = 0; /* Not resource-constrained */ 1728 } else { 1729 /* 1730 * Give everybody a chance, and reschedule to run the queues 1731 * again as long as we're limited. 1732 */ 1733 pwp->resource_limited = 1; 1734 SCHEDULE_WORK(pwp, PMCS_WORK_RUN_QUEUES); 1735 } 1736 1737 pwp->last_wq_dev = target; 1738 mutex_exit(&pwp->lock); 1739 } 1740 1741 /* 1742 * Pull the completion queue, drop the lock and complete all elements. 1743 */ 1744 1745 void 1746 pmcs_scsa_cq_run(void *arg) 1747 { 1748 pmcs_cq_thr_info_t *cqti = (pmcs_cq_thr_info_t *)arg; 1749 pmcs_hw_t *pwp = cqti->cq_pwp; 1750 pmcs_cmd_t *sp, *nxt; 1751 struct scsi_pkt *pkt; 1752 pmcs_xscsi_t *tgt; 1753 pmcs_iocomp_cb_t *ioccb, *ioccb_next; 1754 pmcs_cb_t callback; 1755 1756 DTRACE_PROBE1(pmcs__scsa__cq__run__start, pmcs_cq_thr_info_t *, cqti); 1757 1758 mutex_enter(&pwp->cq_lock); 1759 1760 while (!pwp->cq_info.cq_stop) { 1761 /* 1762 * First, check the I/O completion callback queue. 1763 */ 1764 ioccb = pwp->iocomp_cb_head; 1765 pwp->iocomp_cb_head = NULL; 1766 pwp->iocomp_cb_tail = NULL; 1767 mutex_exit(&pwp->cq_lock); 1768 1769 while (ioccb) { 1770 /* 1771 * Grab the lock on the work structure. The callback 1772 * routine is responsible for clearing it. 1773 */ 1774 mutex_enter(&ioccb->pwrk->lock); 1775 ioccb_next = ioccb->next; 1776 callback = (pmcs_cb_t)ioccb->pwrk->ptr; 1777 (*callback)(pwp, ioccb->pwrk, 1778 (uint32_t *)((void *)ioccb->iomb)); 1779 kmem_cache_free(pwp->iocomp_cb_cache, ioccb); 1780 ioccb = ioccb_next; 1781 } 1782 1783 /* 1784 * Next, run the completion queue 1785 */ 1786 mutex_enter(&pwp->cq_lock); 1787 sp = STAILQ_FIRST(&pwp->cq); 1788 STAILQ_INIT(&pwp->cq); 1789 mutex_exit(&pwp->cq_lock); 1790 1791 DTRACE_PROBE1(pmcs__scsa__cq__run__start__loop, 1792 pmcs_cq_thr_info_t *, cqti); 1793 1794 if (sp && pmcs_check_acc_dma_handle(pwp)) { 1795 ddi_fm_service_impact(pwp->dip, DDI_SERVICE_UNAFFECTED); 1796 } 1797 1798 while (sp) { 1799 nxt = STAILQ_NEXT(sp, cmd_next); 1800 pkt = CMD2PKT(sp); 1801 tgt = sp->cmd_target; 1802 pmcs_prt(pwp, PMCS_PRT_DEBUG3, NULL, tgt, 1803 "%s: calling completion on %p for tgt %p", __func__, 1804 (void *)sp, (void *)tgt); 1805 if (tgt) { 1806 mutex_enter(&tgt->statlock); 1807 ASSERT(tgt->actv_pkts != 0); 1808 tgt->actv_pkts--; 1809 mutex_exit(&tgt->statlock); 1810 } 1811 scsi_hba_pkt_comp(pkt); 1812 sp = nxt; 1813 } 1814 1815 DTRACE_PROBE1(pmcs__scsa__cq__run__end__loop, 1816 pmcs_cq_thr_info_t *, cqti); 1817 1818 /* 1819 * Check if there are more completions to do. If so, and we've 1820 * not been told to stop, skip the wait and cycle through again. 1821 */ 1822 mutex_enter(&pwp->cq_lock); 1823 if ((pwp->iocomp_cb_head == NULL) && STAILQ_EMPTY(&pwp->cq) && 1824 !pwp->cq_info.cq_stop) { 1825 mutex_exit(&pwp->cq_lock); 1826 mutex_enter(&cqti->cq_thr_lock); 1827 cv_wait(&cqti->cq_cv, &cqti->cq_thr_lock); 1828 mutex_exit(&cqti->cq_thr_lock); 1829 mutex_enter(&pwp->cq_lock); 1830 } 1831 } 1832 1833 mutex_exit(&pwp->cq_lock); 1834 DTRACE_PROBE1(pmcs__scsa__cq__run__stop, pmcs_cq_thr_info_t *, cqti); 1835 thread_exit(); 1836 } 1837 1838 /* 1839 * Run a SAS command. Called with pwrk->lock held, returns unlocked. 1840 */ 1841 static int 1842 pmcs_SAS_run(pmcs_cmd_t *sp, pmcwork_t *pwrk) 1843 { 1844 pmcs_hw_t *pwp = CMD2PMC(sp); 1845 struct scsi_pkt *pkt = CMD2PKT(sp); 1846 pmcs_xscsi_t *xp = pwrk->xp; 1847 uint32_t iq, lhtag, *ptr; 1848 sas_ssp_cmd_iu_t sc; 1849 int sp_pkt_time = 0; 1850 1851 ASSERT(xp != NULL); 1852 mutex_enter(&xp->statlock); 1853 if (!xp->assigned) { 1854 mutex_exit(&xp->statlock); 1855 return (PMCS_WQ_RUN_FAIL_OTHER); 1856 } 1857 if ((xp->actv_cnt >= xp->qdepth) || xp->recover_wait) { 1858 mutex_exit(&xp->statlock); 1859 mutex_enter(&xp->wqlock); 1860 STAILQ_INSERT_HEAD(&xp->wq, sp, cmd_next); 1861 mutex_exit(&xp->wqlock); 1862 return (PMCS_WQ_RUN_FAIL_OTHER); 1863 } 1864 GET_IO_IQ_ENTRY(pwp, ptr, pwrk->phy->device_id, iq); 1865 if (ptr == NULL) { 1866 mutex_exit(&xp->statlock); 1867 /* 1868 * This is a temporary failure not likely to unblocked by 1869 * commands completing as the test for scheduling the 1870 * restart of work is a per-device test. 1871 */ 1872 mutex_enter(&xp->wqlock); 1873 STAILQ_INSERT_HEAD(&xp->wq, sp, cmd_next); 1874 mutex_exit(&xp->wqlock); 1875 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, xp, 1876 "%s: Failed to get IO IQ entry for tgt %d", 1877 __func__, xp->target_num); 1878 return (PMCS_WQ_RUN_FAIL_RES); 1879 1880 } 1881 1882 ptr[0] = 1883 LE_32(PMCS_IOMB_IN_SAS(PMCS_OQ_IODONE, PMCIN_SSP_INI_IO_START)); 1884 ptr[1] = LE_32(pwrk->htag); 1885 ptr[2] = LE_32(pwrk->phy->device_id); 1886 ptr[3] = LE_32(pkt->pkt_dma_len); 1887 if (ptr[3]) { 1888 ASSERT(pkt->pkt_numcookies); 1889 if (pkt->pkt_dma_flags & DDI_DMA_READ) { 1890 ptr[4] = LE_32(PMCIN_DATADIR_2_INI); 1891 } else { 1892 ptr[4] = LE_32(PMCIN_DATADIR_2_DEV); 1893 } 1894 if (pmcs_dma_load(pwp, sp, ptr)) { 1895 mutex_exit(&pwp->iqp_lock[iq]); 1896 mutex_exit(&xp->statlock); 1897 mutex_enter(&xp->wqlock); 1898 if (STAILQ_EMPTY(&xp->wq)) { 1899 STAILQ_INSERT_HEAD(&xp->wq, sp, cmd_next); 1900 mutex_exit(&xp->wqlock); 1901 return (PMCS_WQ_RUN_FAIL_RES); 1902 } else { 1903 mutex_exit(&xp->wqlock); 1904 CMD2PKT(sp)->pkt_scbp[0] = STATUS_QFULL; 1905 CMD2PKT(sp)->pkt_reason = CMD_CMPLT; 1906 CMD2PKT(sp)->pkt_state |= STATE_GOT_BUS | 1907 STATE_GOT_TARGET | STATE_SENT_CMD | 1908 STATE_GOT_STATUS; 1909 sp->cmd_tag = NULL; 1910 mutex_enter(&pwp->cq_lock); 1911 STAILQ_INSERT_TAIL(&pwp->cq, sp, cmd_next); 1912 PMCS_CQ_RUN_LOCKED(pwp); 1913 mutex_exit(&pwp->cq_lock); 1914 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, xp, 1915 "%s: Failed to dma_load for tgt %d (QF)", 1916 __func__, xp->target_num); 1917 return (PMCS_WQ_RUN_FAIL_RES_CMP); 1918 } 1919 } 1920 } else { 1921 ptr[4] = LE_32(PMCIN_DATADIR_NONE); 1922 CLEAN_MESSAGE(ptr, 12); 1923 } 1924 xp->actv_cnt++; 1925 if (xp->actv_cnt > xp->maxdepth) { 1926 xp->maxdepth = xp->actv_cnt; 1927 pmcs_prt(pwp, PMCS_PRT_DEBUG2, pwrk->phy, xp, "%s: max depth " 1928 "now %u", pwrk->phy->path, xp->maxdepth); 1929 } 1930 mutex_exit(&xp->statlock); 1931 1932 1933 #ifdef DEBUG 1934 /* 1935 * Generate a PMCOUT_STATUS_XFER_CMD_FRAME_ISSUED 1936 * event when this goes out on the wire. 1937 */ 1938 ptr[4] |= PMCIN_MESSAGE_REPORT; 1939 #endif 1940 /* 1941 * Fill in the SSP IU 1942 */ 1943 1944 bzero(&sc, sizeof (sas_ssp_cmd_iu_t)); 1945 bcopy((uint8_t *)&sp->cmd_lun->scsi_lun, sc.lun, sizeof (scsi_lun_t)); 1946 1947 switch (pkt->pkt_flags & FLAG_TAGMASK) { 1948 case FLAG_HTAG: 1949 sc.task_attribute = SAS_CMD_TASK_ATTR_HEAD; 1950 break; 1951 case FLAG_OTAG: 1952 sc.task_attribute = SAS_CMD_TASK_ATTR_ORDERED; 1953 break; 1954 case FLAG_STAG: 1955 default: 1956 sc.task_attribute = SAS_CMD_TASK_ATTR_SIMPLE; 1957 break; 1958 } 1959 (void) memcpy(sc.cdb, pkt->pkt_cdbp, 1960 min(SCSA_CDBLEN(sp), sizeof (sc.cdb))); 1961 (void) memcpy(&ptr[5], &sc, sizeof (sas_ssp_cmd_iu_t)); 1962 pwrk->state = PMCS_WORK_STATE_ONCHIP; 1963 lhtag = pwrk->htag; 1964 mutex_exit(&pwrk->lock); 1965 pmcs_prt(pwp, PMCS_PRT_DEBUG2, NULL, NULL, 1966 "%s: giving pkt %p (tag %x) to the hardware", __func__, 1967 (void *)pkt, pwrk->htag); 1968 #ifdef DEBUG 1969 pmcs_print_entry(pwp, PMCS_PRT_DEBUG3, "SAS INI Message", ptr); 1970 #endif 1971 mutex_enter(&xp->aqlock); 1972 STAILQ_INSERT_TAIL(&xp->aq, sp, cmd_next); 1973 mutex_exit(&xp->aqlock); 1974 sp_pkt_time = CMD2PKT(sp)->pkt_time; 1975 INC_IQ_ENTRY(pwp, iq); 1976 mutex_enter(&pwrk->lock); 1977 if (lhtag == pwrk->htag) { 1978 pwrk->timer = US2WT(sp_pkt_time * 1000000); 1979 if (pwrk->timer == 0) { 1980 pwrk->timer = US2WT(1000000); 1981 } 1982 } 1983 mutex_exit(&pwrk->lock); 1984 1985 /* 1986 * If we just submitted the last command queued from device state 1987 * recovery, clear the wq_recovery_tail pointer. 1988 */ 1989 mutex_enter(&xp->wqlock); 1990 if (xp->wq_recovery_tail == sp) { 1991 xp->wq_recovery_tail = NULL; 1992 } 1993 mutex_exit(&xp->wqlock); 1994 1995 return (PMCS_WQ_RUN_SUCCESS); 1996 } 1997 1998 /* 1999 * Complete a SAS command 2000 * 2001 * Called with pwrk lock held. 2002 * The free of pwrk releases the lock. 2003 */ 2004 2005 static void 2006 pmcs_SAS_done(pmcs_hw_t *pwp, pmcwork_t *pwrk, uint32_t *msg) 2007 { 2008 pmcs_cmd_t *sp = pwrk->arg; 2009 pmcs_phy_t *pptr = pwrk->phy; 2010 pmcs_xscsi_t *xp = pwrk->xp; 2011 struct scsi_pkt *pkt = CMD2PKT(sp); 2012 int dead; 2013 uint32_t sts; 2014 boolean_t aborted = B_FALSE; 2015 boolean_t do_ds_recovery = B_FALSE; 2016 2017 ASSERT(xp != NULL); 2018 ASSERT(sp != NULL); 2019 ASSERT(pptr != NULL); 2020 2021 DTRACE_PROBE4(pmcs__io__done, uint64_t, pkt->pkt_dma_len, int, 2022 (pkt->pkt_dma_flags & DDI_DMA_READ) != 0, hrtime_t, pwrk->start, 2023 hrtime_t, gethrtime()); 2024 2025 dead = pwrk->dead; 2026 2027 if (msg) { 2028 sts = LE_32(msg[2]); 2029 } else { 2030 sts = 0; 2031 } 2032 2033 if (dead != 0) { 2034 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, "%s: dead cmd tag " 2035 "0x%x for %s", __func__, pwrk->htag, pptr->path); 2036 goto out; 2037 } 2038 2039 if (sts == PMCOUT_STATUS_ABORTED) { 2040 aborted = B_TRUE; 2041 } 2042 2043 if (pwrk->state == PMCS_WORK_STATE_TIMED_OUT) { 2044 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, 2045 "%s: cmd 0x%p (tag 0x%x) timed out for %s", 2046 __func__, (void *)sp, pwrk->htag, pptr->path); 2047 CMD2PKT(sp)->pkt_scbp[0] = STATUS_GOOD; 2048 CMD2PKT(sp)->pkt_state |= STATE_GOT_BUS | STATE_GOT_TARGET | 2049 STATE_SENT_CMD; 2050 CMD2PKT(sp)->pkt_statistics |= STAT_TIMEOUT; 2051 goto out; 2052 } 2053 2054 /* 2055 * If the status isn't okay but not underflow, 2056 * step to the side and parse the (possible) error. 2057 */ 2058 #ifdef DEBUG 2059 if (msg) { 2060 pmcs_print_entry(pwp, PMCS_PRT_DEBUG3, "Outbound Message", msg); 2061 } 2062 #endif 2063 if (!msg) { 2064 goto out; 2065 } 2066 2067 switch (sts) { 2068 case PMCOUT_STATUS_OPEN_CNX_ERROR_IT_NEXUS_LOSS: 2069 case PMCOUT_STATUS_IO_DS_NON_OPERATIONAL: 2070 case PMCOUT_STATUS_IO_DS_IN_RECOVERY: 2071 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, 2072 "%s: PHY %s requires DS recovery (status=%d)", 2073 __func__, pptr->path, sts); 2074 do_ds_recovery = B_TRUE; 2075 break; 2076 case PMCOUT_STATUS_UNDERFLOW: 2077 (void) pmcs_set_resid(pkt, pkt->pkt_dma_len, LE_32(msg[3])); 2078 pmcs_prt(pwp, PMCS_PRT_DEBUG_UNDERFLOW, NULL, NULL, 2079 "%s: underflow %u for cdb 0x%x", 2080 __func__, LE_32(msg[3]), pkt->pkt_cdbp[0] & 0xff); 2081 sts = PMCOUT_STATUS_OK; 2082 msg[3] = 0; 2083 break; 2084 case PMCOUT_STATUS_OK: 2085 pkt->pkt_resid = 0; 2086 break; 2087 } 2088 2089 if (sts != PMCOUT_STATUS_OK) { 2090 pmcs_ioerror(pwp, SAS, pwrk, msg, sts); 2091 } else { 2092 if (msg[3]) { 2093 uint8_t local[PMCS_QENTRY_SIZE << 1], *xd; 2094 sas_ssp_rsp_iu_t *rptr = (void *)local; 2095 const int lim = 2096 (PMCS_QENTRY_SIZE << 1) - SAS_RSP_HDR_SIZE; 2097 static const uint8_t ssp_rsp_evec[] = { 2098 0x58, 0x61, 0x56, 0x72, 0x00 2099 }; 2100 2101 /* 2102 * Transform the the first part of the response 2103 * to host canonical form. This gives us enough 2104 * information to figure out what to do with the 2105 * rest (which remains unchanged in the incoming 2106 * message which can be up to two queue entries 2107 * in length). 2108 */ 2109 pmcs_endian_transform(pwp, local, &msg[5], 2110 ssp_rsp_evec); 2111 xd = (uint8_t *)(&msg[5]); 2112 xd += SAS_RSP_HDR_SIZE; 2113 2114 if (rptr->datapres == SAS_RSP_DATAPRES_RESPONSE_DATA) { 2115 if (rptr->response_data_length != 4) { 2116 pmcs_print_entry(pwp, PMCS_PRT_DEBUG, 2117 "Bad SAS RESPONSE DATA LENGTH", 2118 msg); 2119 pkt->pkt_reason = CMD_TRAN_ERR; 2120 goto out; 2121 } 2122 (void) memcpy(&sts, xd, sizeof (uint32_t)); 2123 sts = BE_32(sts); 2124 /* 2125 * The only response code we should legally get 2126 * here is an INVALID FRAME response code. 2127 */ 2128 if (sts == SAS_RSP_INVALID_FRAME) { 2129 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, 2130 "%s: pkt %p tgt %u path %s " 2131 "completed: INVALID FRAME response", 2132 __func__, (void *)pkt, 2133 xp->target_num, pptr->path); 2134 } else { 2135 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, 2136 "%s: pkt %p tgt %u path %s " 2137 "completed: illegal response 0x%x", 2138 __func__, (void *)pkt, 2139 xp->target_num, pptr->path, sts); 2140 } 2141 pkt->pkt_reason = CMD_TRAN_ERR; 2142 goto out; 2143 } 2144 if (rptr->datapres == SAS_RSP_DATAPRES_SENSE_DATA) { 2145 uint32_t slen; 2146 slen = rptr->sense_data_length; 2147 if (slen > lim) { 2148 slen = lim; 2149 } 2150 pmcs_latch_status(pwp, sp, rptr->status, xd, 2151 slen, pptr->path); 2152 } else if (rptr->datapres == SAS_RSP_DATAPRES_NO_DATA) { 2153 pmcout_ssp_comp_t *sspcp; 2154 sspcp = (pmcout_ssp_comp_t *)msg; 2155 uint32_t *residp; 2156 /* 2157 * This is the case for a plain SCSI status. 2158 * Note: If RESC_V is set and we're here, there 2159 * is a residual. We need to find it and update 2160 * the packet accordingly. 2161 */ 2162 pmcs_latch_status(pwp, sp, rptr->status, NULL, 2163 0, pptr->path); 2164 2165 if (sspcp->resc_v) { 2166 /* 2167 * Point residual to the SSP_RESP_IU 2168 */ 2169 residp = (uint32_t *)(sspcp + 1); 2170 /* 2171 * param contains the number of bytes 2172 * between where the SSP_RESP_IU may 2173 * or may not be and the residual. 2174 * Increment residp by the appropriate 2175 * number of words: (param+resc_pad)/4). 2176 */ 2177 residp += (LE_32(sspcp->param) + 2178 sspcp->resc_pad) / 2179 sizeof (uint32_t); 2180 pmcs_prt(pwp, PMCS_PRT_DEBUG_UNDERFLOW, 2181 pptr, xp, "%s: tgt 0x%p " 2182 "residual %d for pkt 0x%p", 2183 __func__, (void *) xp, *residp, 2184 (void *) pkt); 2185 ASSERT(LE_32(*residp) <= 2186 pkt->pkt_dma_len); 2187 (void) pmcs_set_resid(pkt, 2188 pkt->pkt_dma_len, LE_32(*residp)); 2189 } 2190 } else { 2191 pmcs_print_entry(pwp, PMCS_PRT_DEBUG, 2192 "illegal SAS response", msg); 2193 pkt->pkt_reason = CMD_TRAN_ERR; 2194 goto out; 2195 } 2196 } else { 2197 pmcs_latch_status(pwp, sp, STATUS_GOOD, NULL, 0, 2198 pptr->path); 2199 } 2200 if (pkt->pkt_dma_len) { 2201 pkt->pkt_state |= STATE_XFERRED_DATA; 2202 } 2203 } 2204 pmcs_prt(pwp, PMCS_PRT_DEBUG2, pptr, xp, 2205 "%s: pkt %p tgt %u done reason=%x state=%x resid=%ld status=%x", 2206 __func__, (void *)pkt, xp->target_num, pkt->pkt_reason, 2207 pkt->pkt_state, pkt->pkt_resid, pkt->pkt_scbp[0]); 2208 2209 if (pwrk->state == PMCS_WORK_STATE_ABORTED) { 2210 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, 2211 "%s: scsi_pkt 0x%p aborted for PHY %s; work = 0x%p", 2212 __func__, (void *)pkt, pptr->path, (void *)pwrk); 2213 aborted = B_TRUE; 2214 } 2215 2216 out: 2217 pmcs_dma_unload(pwp, sp); 2218 mutex_enter(&xp->statlock); 2219 2220 /* 2221 * If the device no longer has a PHY pointer, clear the PHY pointer 2222 * from the work structure before we free it. Otherwise, pmcs_pwork 2223 * may decrement the ref_count on a PHY that's been freed. 2224 */ 2225 if (xp->phy == NULL) { 2226 pwrk->phy = NULL; 2227 } 2228 2229 /* 2230 * We may arrive here due to a command timing out, which in turn 2231 * could be addressed in a different context. So, free the work 2232 * back, but only after confirming it's not already been freed 2233 * elsewhere. 2234 */ 2235 if (pwrk->htag != PMCS_TAG_FREE) { 2236 pmcs_pwork(pwp, pwrk); 2237 } 2238 2239 /* 2240 * If the device is gone, we only put this command on the completion 2241 * queue if the work structure is not marked dead. If it's marked 2242 * dead, it will already have been put there. 2243 */ 2244 if (xp->dev_gone) { 2245 mutex_exit(&xp->statlock); 2246 if (!dead) { 2247 mutex_enter(&xp->aqlock); 2248 STAILQ_REMOVE(&xp->aq, sp, pmcs_cmd, cmd_next); 2249 mutex_exit(&xp->aqlock); 2250 pmcs_prt(pwp, PMCS_PRT_DEBUG3, pptr, xp, 2251 "%s: Removing cmd 0x%p (htag 0x%x) from aq", 2252 __func__, (void *)sp, sp->cmd_tag); 2253 mutex_enter(&pwp->cq_lock); 2254 STAILQ_INSERT_TAIL(&pwp->cq, sp, cmd_next); 2255 PMCS_CQ_RUN_LOCKED(pwp); 2256 mutex_exit(&pwp->cq_lock); 2257 pmcs_prt(pwp, PMCS_PRT_DEBUG2, pptr, xp, 2258 "%s: Completing command for dead target 0x%p", 2259 __func__, (void *)xp); 2260 } 2261 return; 2262 } 2263 2264 ASSERT(xp->actv_cnt > 0); 2265 if (--(xp->actv_cnt) == 0) { 2266 if (xp->draining) { 2267 pmcs_prt(pwp, PMCS_PRT_DEBUG1, pptr, xp, 2268 "%s: waking up drain waiters", __func__); 2269 cv_signal(&pwp->drain_cv); 2270 } 2271 } 2272 mutex_exit(&xp->statlock); 2273 2274 /* 2275 * If the status is other than OK, determine if it's something that 2276 * is worth re-attempting enumeration. If so, mark the PHY. 2277 */ 2278 if (sts != PMCOUT_STATUS_OK) { 2279 pmcs_status_disposition(pptr, sts); 2280 } 2281 2282 if (dead == 0) { 2283 #ifdef DEBUG 2284 pmcs_cmd_t *wp; 2285 mutex_enter(&xp->aqlock); 2286 STAILQ_FOREACH(wp, &xp->aq, cmd_next) { 2287 if (wp == sp) { 2288 break; 2289 } 2290 } 2291 ASSERT(wp != NULL); 2292 #else 2293 mutex_enter(&xp->aqlock); 2294 #endif 2295 pmcs_prt(pwp, PMCS_PRT_DEBUG3, pptr, xp, 2296 "%s: Removing cmd 0x%p (htag 0x%x) from aq", __func__, 2297 (void *)sp, sp->cmd_tag); 2298 STAILQ_REMOVE(&xp->aq, sp, pmcs_cmd, cmd_next); 2299 if (aborted) { 2300 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, 2301 "%s: Aborted cmd for tgt 0x%p, signaling waiters", 2302 __func__, (void *)xp); 2303 cv_signal(&xp->abort_cv); 2304 } 2305 mutex_exit(&xp->aqlock); 2306 } 2307 2308 /* 2309 * If do_ds_recovery is set, we need to initiate device state 2310 * recovery. In this case, we put this I/O back on the head of 2311 * the wait queue to run again after recovery is complete 2312 */ 2313 if (do_ds_recovery) { 2314 mutex_enter(&xp->statlock); 2315 pmcs_start_dev_state_recovery(xp, pptr); 2316 mutex_exit(&xp->statlock); 2317 pmcs_prt(pwp, PMCS_PRT_DEBUG1, pptr, xp, "%s: Putting cmd 0x%p " 2318 "back on wq during recovery for tgt 0x%p", __func__, 2319 (void *)sp, (void *)xp); 2320 mutex_enter(&xp->wqlock); 2321 if (xp->wq_recovery_tail == NULL) { 2322 STAILQ_INSERT_HEAD(&xp->wq, sp, cmd_next); 2323 } else { 2324 /* 2325 * If there are other I/Os waiting at the head due to 2326 * device state recovery, add this one in the right spot 2327 * to maintain proper order. 2328 */ 2329 STAILQ_INSERT_AFTER(&xp->wq, xp->wq_recovery_tail, sp, 2330 cmd_next); 2331 } 2332 xp->wq_recovery_tail = sp; 2333 mutex_exit(&xp->wqlock); 2334 } else { 2335 /* 2336 * If we're not initiating device state recovery and this 2337 * command was not "dead", put it on the completion queue 2338 */ 2339 if (!dead) { 2340 mutex_enter(&pwp->cq_lock); 2341 STAILQ_INSERT_TAIL(&pwp->cq, sp, cmd_next); 2342 PMCS_CQ_RUN_LOCKED(pwp); 2343 mutex_exit(&pwp->cq_lock); 2344 } 2345 } 2346 } 2347 2348 /* 2349 * Run a SATA command (normal reads and writes), 2350 * or block and schedule a SATL interpretation 2351 * of the command. 2352 * 2353 * Called with pwrk lock held, returns unlocked. 2354 */ 2355 2356 static int 2357 pmcs_SATA_run(pmcs_cmd_t *sp, pmcwork_t *pwrk) 2358 { 2359 pmcs_hw_t *pwp = CMD2PMC(sp); 2360 struct scsi_pkt *pkt = CMD2PKT(sp); 2361 pmcs_xscsi_t *xp; 2362 uint8_t cdb_base, asc, tag; 2363 uint32_t *ptr, lhtag, iq, nblk, i, mtype; 2364 fis_t fis; 2365 size_t amt; 2366 uint64_t lba; 2367 int sp_pkt_time = 0; 2368 2369 xp = pwrk->xp; 2370 ASSERT(xp != NULL); 2371 2372 /* 2373 * First, see if this is just a plain read/write command. 2374 * If not, we have to queue it up for processing, block 2375 * any additional commands from coming in, and wake up 2376 * the thread that will process this command. 2377 */ 2378 cdb_base = pkt->pkt_cdbp[0] & 0x1f; 2379 if (cdb_base != SCMD_READ && cdb_base != SCMD_WRITE) { 2380 pmcs_prt(pwp, PMCS_PRT_DEBUG1, NULL, NULL, 2381 "%s: special SATA cmd %p", __func__, (void *)sp); 2382 2383 ASSERT(xp->phy != NULL); 2384 pmcs_pwork(pwp, pwrk); 2385 pmcs_lock_phy(xp->phy); 2386 mutex_enter(&xp->statlock); 2387 xp->special_needed = 1; /* Set the special_needed flag */ 2388 STAILQ_INSERT_TAIL(&xp->sq, sp, cmd_next); 2389 if (pmcs_run_sata_special(pwp, xp)) { 2390 SCHEDULE_WORK(pwp, PMCS_WORK_SATA_RUN); 2391 } 2392 mutex_exit(&xp->statlock); 2393 pmcs_unlock_phy(xp->phy); 2394 2395 return (PMCS_WQ_RUN_SUCCESS); 2396 } 2397 2398 pmcs_prt(pwp, PMCS_PRT_DEBUG2, NULL, NULL, "%s: regular cmd", __func__); 2399 2400 mutex_enter(&xp->statlock); 2401 if (!xp->assigned) { 2402 mutex_exit(&xp->statlock); 2403 return (PMCS_WQ_RUN_FAIL_OTHER); 2404 } 2405 if (xp->special_running || xp->special_needed || xp->recover_wait) { 2406 mutex_exit(&xp->statlock); 2407 mutex_enter(&xp->wqlock); 2408 STAILQ_INSERT_HEAD(&xp->wq, sp, cmd_next); 2409 mutex_exit(&xp->wqlock); 2410 /* 2411 * By the time we get here the special 2412 * commands running or waiting to be run 2413 * may have come and gone, so kick our 2414 * worker to run the waiting queues 2415 * just in case. 2416 */ 2417 SCHEDULE_WORK(pwp, PMCS_WORK_RUN_QUEUES); 2418 return (PMCS_WQ_RUN_FAIL_OTHER); 2419 } 2420 lba = xp->capacity; 2421 mutex_exit(&xp->statlock); 2422 2423 /* 2424 * Extract data length and lba parameters out of the command. The 2425 * function pmcs_SATA_rwparm returns a non-zero ASC value if the CDB 2426 * values are considered illegal. 2427 */ 2428 asc = pmcs_SATA_rwparm(pkt->pkt_cdbp, &nblk, &lba, lba); 2429 if (asc) { 2430 uint8_t sns[18]; 2431 bzero(sns, sizeof (sns)); 2432 sns[0] = 0xf0; 2433 sns[2] = 0x5; 2434 sns[12] = asc; 2435 pmcs_latch_status(pwp, sp, STATUS_CHECK, sns, sizeof (sns), 2436 pwrk->phy->path); 2437 pmcs_pwork(pwp, pwrk); 2438 mutex_enter(&pwp->cq_lock); 2439 STAILQ_INSERT_TAIL(&pwp->cq, sp, cmd_next); 2440 PMCS_CQ_RUN_LOCKED(pwp); 2441 mutex_exit(&pwp->cq_lock); 2442 return (PMCS_WQ_RUN_SUCCESS); 2443 } 2444 2445 /* 2446 * If the command decodes as not moving any data, complete it here. 2447 */ 2448 amt = nblk; 2449 amt <<= 9; 2450 amt = pmcs_set_resid(pkt, amt, nblk << 9); 2451 if (amt == 0) { 2452 pmcs_latch_status(pwp, sp, STATUS_GOOD, NULL, 0, 2453 pwrk->phy->path); 2454 pmcs_pwork(pwp, pwrk); 2455 mutex_enter(&pwp->cq_lock); 2456 STAILQ_INSERT_TAIL(&pwp->cq, sp, cmd_next); 2457 PMCS_CQ_RUN_LOCKED(pwp); 2458 mutex_exit(&pwp->cq_lock); 2459 return (PMCS_WQ_RUN_SUCCESS); 2460 } 2461 2462 /* 2463 * Get an inbound queue entry for this I/O 2464 */ 2465 GET_IO_IQ_ENTRY(pwp, ptr, xp->phy->device_id, iq); 2466 if (ptr == NULL) { 2467 /* 2468 * This is a temporary failure not likely to unblocked by 2469 * commands completing as the test for scheduling the 2470 * restart of work is a per-device test. 2471 */ 2472 mutex_enter(&xp->wqlock); 2473 STAILQ_INSERT_HEAD(&xp->wq, sp, cmd_next); 2474 mutex_exit(&xp->wqlock); 2475 pmcs_dma_unload(pwp, sp); 2476 SCHEDULE_WORK(pwp, PMCS_WORK_RUN_QUEUES); 2477 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, xp, 2478 "%s: Failed to get IO IQ entry for tgt %d", 2479 __func__, xp->target_num); 2480 return (PMCS_WQ_RUN_FAIL_RES); 2481 } 2482 2483 /* 2484 * Get a tag. At this point, hold statlock until the tagmap is 2485 * updated (just prior to sending the cmd to the hardware). 2486 */ 2487 mutex_enter(&xp->statlock); 2488 for (tag = 0; tag < xp->qdepth; tag++) { 2489 if ((xp->tagmap & (1 << tag)) == 0) { 2490 break; 2491 } 2492 } 2493 2494 if (tag == xp->qdepth) { 2495 mutex_exit(&xp->statlock); 2496 mutex_exit(&pwp->iqp_lock[iq]); 2497 mutex_enter(&xp->wqlock); 2498 STAILQ_INSERT_HEAD(&xp->wq, sp, cmd_next); 2499 mutex_exit(&xp->wqlock); 2500 return (PMCS_WQ_RUN_FAIL_OTHER); 2501 } 2502 2503 sp->cmd_satltag = (uint8_t)tag; 2504 2505 /* 2506 * Set up the command 2507 */ 2508 bzero(fis, sizeof (fis)); 2509 ptr[0] = 2510 LE_32(PMCS_IOMB_IN_SAS(PMCS_OQ_IODONE, PMCIN_SATA_HOST_IO_START)); 2511 ptr[1] = LE_32(pwrk->htag); 2512 ptr[2] = LE_32(pwrk->phy->device_id); 2513 ptr[3] = LE_32(amt); 2514 2515 if (xp->ncq) { 2516 mtype = SATA_PROTOCOL_FPDMA | (tag << 16); 2517 fis[0] = ((nblk & 0xff) << 24) | (C_BIT << 8) | FIS_REG_H2DEV; 2518 if (cdb_base == SCMD_READ) { 2519 fis[0] |= (READ_FPDMA_QUEUED << 16); 2520 } else { 2521 fis[0] |= (WRITE_FPDMA_QUEUED << 16); 2522 } 2523 fis[1] = (FEATURE_LBA << 24) | (lba & 0xffffff); 2524 fis[2] = ((nblk & 0xff00) << 16) | ((lba >> 24) & 0xffffff); 2525 fis[3] = tag << 3; 2526 } else { 2527 int op; 2528 fis[0] = (C_BIT << 8) | FIS_REG_H2DEV; 2529 if (xp->pio) { 2530 mtype = SATA_PROTOCOL_PIO; 2531 if (cdb_base == SCMD_READ) { 2532 op = READ_SECTORS_EXT; 2533 } else { 2534 op = WRITE_SECTORS_EXT; 2535 } 2536 } else { 2537 mtype = SATA_PROTOCOL_DMA; 2538 if (cdb_base == SCMD_READ) { 2539 op = READ_DMA_EXT; 2540 } else { 2541 op = WRITE_DMA_EXT; 2542 } 2543 } 2544 fis[0] |= (op << 16); 2545 fis[1] = (FEATURE_LBA << 24) | (lba & 0xffffff); 2546 fis[2] = (lba >> 24) & 0xffffff; 2547 fis[3] = nblk; 2548 } 2549 2550 if (cdb_base == SCMD_READ) { 2551 ptr[4] = LE_32(mtype | PMCIN_DATADIR_2_INI); 2552 } else { 2553 ptr[4] = LE_32(mtype | PMCIN_DATADIR_2_DEV); 2554 } 2555 #ifdef DEBUG 2556 /* 2557 * Generate a PMCOUT_STATUS_XFER_CMD_FRAME_ISSUED 2558 * event when this goes out on the wire. 2559 */ 2560 ptr[4] |= PMCIN_MESSAGE_REPORT; 2561 #endif 2562 for (i = 0; i < (sizeof (fis_t))/(sizeof (uint32_t)); i++) { 2563 ptr[i+5] = LE_32(fis[i]); 2564 } 2565 if (pmcs_dma_load(pwp, sp, ptr)) { 2566 mutex_exit(&xp->statlock); 2567 mutex_exit(&pwp->iqp_lock[iq]); 2568 mutex_enter(&xp->wqlock); 2569 STAILQ_INSERT_HEAD(&xp->wq, sp, cmd_next); 2570 mutex_exit(&xp->wqlock); 2571 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, xp, 2572 "%s: Failed to dma_load for tgt %d", 2573 __func__, xp->target_num); 2574 return (PMCS_WQ_RUN_FAIL_RES); 2575 2576 } 2577 2578 pwrk->state = PMCS_WORK_STATE_ONCHIP; 2579 lhtag = pwrk->htag; 2580 mutex_exit(&pwrk->lock); 2581 xp->tagmap |= (1 << tag); 2582 xp->actv_cnt++; 2583 if (xp->actv_cnt > xp->maxdepth) { 2584 xp->maxdepth = xp->actv_cnt; 2585 pmcs_prt(pwp, PMCS_PRT_DEBUG2, pwrk->phy, xp, 2586 "%s: max depth now %u", pwrk->phy->path, xp->maxdepth); 2587 } 2588 mutex_exit(&xp->statlock); 2589 mutex_enter(&xp->aqlock); 2590 STAILQ_INSERT_TAIL(&xp->aq, sp, cmd_next); 2591 mutex_exit(&xp->aqlock); 2592 pmcs_prt(pwp, PMCS_PRT_DEBUG2, NULL, NULL, 2593 "%s: giving pkt %p to hardware", __func__, (void *)pkt); 2594 #ifdef DEBUG 2595 pmcs_print_entry(pwp, PMCS_PRT_DEBUG3, "SATA INI Message", ptr); 2596 #endif 2597 sp_pkt_time = CMD2PKT(sp)->pkt_time; 2598 INC_IQ_ENTRY(pwp, iq); 2599 mutex_enter(&pwrk->lock); 2600 if (lhtag == pwrk->htag) { 2601 pwrk->timer = US2WT(sp_pkt_time * 1000000); 2602 if (pwrk->timer == 0) { 2603 pwrk->timer = US2WT(1000000); 2604 } 2605 } 2606 mutex_exit(&pwrk->lock); 2607 2608 return (PMCS_WQ_RUN_SUCCESS); 2609 } 2610 2611 /* 2612 * Complete a SATA command. Called with pwrk lock held. 2613 */ 2614 void 2615 pmcs_SATA_done(pmcs_hw_t *pwp, pmcwork_t *pwrk, uint32_t *msg) 2616 { 2617 pmcs_cmd_t *sp = pwrk->arg; 2618 struct scsi_pkt *pkt = CMD2PKT(sp); 2619 pmcs_phy_t *pptr = pwrk->phy; 2620 int dead; 2621 uint32_t sts; 2622 pmcs_xscsi_t *xp; 2623 boolean_t aborted = B_FALSE; 2624 2625 xp = pwrk->xp; 2626 ASSERT(xp != NULL); 2627 2628 DTRACE_PROBE4(pmcs__io__done, uint64_t, pkt->pkt_dma_len, int, 2629 (pkt->pkt_dma_flags & DDI_DMA_READ) != 0, hrtime_t, pwrk->start, 2630 hrtime_t, gethrtime()); 2631 2632 dead = pwrk->dead; 2633 2634 if (msg) { 2635 sts = LE_32(msg[2]); 2636 } else { 2637 sts = 0; 2638 } 2639 2640 if (dead != 0) { 2641 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, "%s: dead cmd tag " 2642 "0x%x for %s", __func__, pwrk->htag, pptr->path); 2643 goto out; 2644 } 2645 if ((pwrk->state == PMCS_WORK_STATE_TIMED_OUT) && 2646 (sts != PMCOUT_STATUS_ABORTED)) { 2647 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, 2648 "%s: cmd 0x%p (tag 0x%x) timed out for %s", 2649 __func__, (void *)sp, pwrk->htag, pptr->path); 2650 CMD2PKT(sp)->pkt_scbp[0] = STATUS_GOOD; 2651 /* pkt_reason already set to CMD_TIMEOUT */ 2652 ASSERT(CMD2PKT(sp)->pkt_reason == CMD_TIMEOUT); 2653 CMD2PKT(sp)->pkt_state |= STATE_GOT_BUS | STATE_GOT_TARGET | 2654 STATE_SENT_CMD; 2655 CMD2PKT(sp)->pkt_statistics |= STAT_TIMEOUT; 2656 goto out; 2657 } 2658 2659 pmcs_prt(pwp, PMCS_PRT_DEBUG2, pptr, xp, "%s: pkt %p tgt %u done", 2660 __func__, (void *)pkt, xp->target_num); 2661 2662 /* 2663 * If the status isn't okay but not underflow, 2664 * step to the side and parse the (possible) error. 2665 */ 2666 #ifdef DEBUG 2667 if (msg) { 2668 pmcs_print_entry(pwp, PMCS_PRT_DEBUG3, "Outbound Message", msg); 2669 } 2670 #endif 2671 if (!msg) { 2672 goto out; 2673 } 2674 2675 /* 2676 * If the status isn't okay or we got a FIS response of some kind, 2677 * step to the side and parse the (possible) error. 2678 */ 2679 if ((sts != PMCOUT_STATUS_OK) || (LE_32(msg[3]) != 0)) { 2680 if (sts == PMCOUT_STATUS_IO_DS_NON_OPERATIONAL) { 2681 mutex_exit(&pwrk->lock); 2682 pmcs_lock_phy(pptr); 2683 mutex_enter(&xp->statlock); 2684 if ((xp->resetting == 0) && (xp->reset_success != 0) && 2685 (xp->reset_wait == 0)) { 2686 mutex_exit(&xp->statlock); 2687 if (pmcs_reset_phy(pwp, pptr, 2688 PMCS_PHYOP_LINK_RESET) != 0) { 2689 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, 2690 "%s: PHY (%s) Local Control/Link " 2691 "Reset FAILED as part of error " 2692 "recovery", __func__, pptr->path); 2693 } 2694 mutex_enter(&xp->statlock); 2695 } 2696 mutex_exit(&xp->statlock); 2697 pmcs_unlock_phy(pptr); 2698 mutex_enter(&pwrk->lock); 2699 } 2700 pmcs_ioerror(pwp, SATA, pwrk, msg, sts); 2701 } else { 2702 pmcs_latch_status(pwp, sp, STATUS_GOOD, NULL, 0, 2703 pwrk->phy->path); 2704 pkt->pkt_state |= STATE_XFERRED_DATA; 2705 pkt->pkt_resid = 0; 2706 } 2707 2708 pmcs_prt(pwp, PMCS_PRT_DEBUG2, pptr, xp, 2709 "%s: pkt %p tgt %u done reason=%x state=%x resid=%ld status=%x", 2710 __func__, (void *)pkt, xp->target_num, pkt->pkt_reason, 2711 pkt->pkt_state, pkt->pkt_resid, pkt->pkt_scbp[0]); 2712 2713 if (pwrk->state == PMCS_WORK_STATE_ABORTED) { 2714 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, 2715 "%s: scsi_pkt 0x%p aborted for PHY %s; work = 0x%p", 2716 __func__, (void *)pkt, pptr->path, (void *)pwrk); 2717 aborted = B_TRUE; 2718 } 2719 2720 out: 2721 pmcs_dma_unload(pwp, sp); 2722 mutex_enter(&xp->statlock); 2723 xp->tagmap &= ~(1 << sp->cmd_satltag); 2724 2725 /* 2726 * If the device no longer has a PHY pointer, clear the PHY pointer 2727 * from the work structure before we free it. Otherwise, pmcs_pwork 2728 * may decrement the ref_count on a PHY that's been freed. 2729 */ 2730 if (xp->phy == NULL) { 2731 pwrk->phy = NULL; 2732 } 2733 2734 /* 2735 * We may arrive here due to a command timing out, which in turn 2736 * could be addressed in a different context. So, free the work 2737 * back, but only after confirming it's not already been freed 2738 * elsewhere. 2739 */ 2740 if (pwrk->htag != PMCS_TAG_FREE) { 2741 pmcs_pwork(pwp, pwrk); 2742 } 2743 2744 if (xp->dev_gone) { 2745 mutex_exit(&xp->statlock); 2746 if (!dead) { 2747 mutex_enter(&xp->aqlock); 2748 STAILQ_REMOVE(&xp->aq, sp, pmcs_cmd, cmd_next); 2749 mutex_exit(&xp->aqlock); 2750 pmcs_prt(pwp, PMCS_PRT_DEBUG3, pptr, xp, 2751 "%s: Removing cmd 0x%p (htag 0x%x) from aq", 2752 __func__, (void *)sp, sp->cmd_tag); 2753 mutex_enter(&pwp->cq_lock); 2754 STAILQ_INSERT_TAIL(&pwp->cq, sp, cmd_next); 2755 PMCS_CQ_RUN_LOCKED(pwp); 2756 mutex_exit(&pwp->cq_lock); 2757 pmcs_prt(pwp, PMCS_PRT_DEBUG2, pptr, xp, 2758 "%s: Completing command for dead target 0x%p", 2759 __func__, (void *)xp); 2760 } 2761 return; 2762 } 2763 2764 ASSERT(xp->actv_cnt > 0); 2765 if (--(xp->actv_cnt) == 0) { 2766 if (xp->draining) { 2767 pmcs_prt(pwp, PMCS_PRT_DEBUG1, pptr, xp, 2768 "%s: waking up drain waiters", __func__); 2769 cv_signal(&pwp->drain_cv); 2770 } else if (xp->special_needed) { 2771 SCHEDULE_WORK(pwp, PMCS_WORK_SATA_RUN); 2772 } 2773 } 2774 mutex_exit(&xp->statlock); 2775 2776 /* 2777 * If the status is other than OK, determine if it's something that 2778 * is worth re-attempting enumeration. If so, mark the PHY. 2779 */ 2780 if (sts != PMCOUT_STATUS_OK) { 2781 pmcs_status_disposition(pptr, sts); 2782 } 2783 2784 if (dead == 0) { 2785 #ifdef DEBUG 2786 pmcs_cmd_t *wp; 2787 mutex_enter(&xp->aqlock); 2788 STAILQ_FOREACH(wp, &xp->aq, cmd_next) { 2789 if (wp == sp) { 2790 break; 2791 } 2792 } 2793 ASSERT(wp != NULL); 2794 #else 2795 mutex_enter(&xp->aqlock); 2796 #endif 2797 STAILQ_REMOVE(&xp->aq, sp, pmcs_cmd, cmd_next); 2798 if (aborted) { 2799 pmcs_prt(pwp, PMCS_PRT_DEBUG, pptr, xp, 2800 "%s: Aborted cmd for tgt 0x%p, signaling waiters", 2801 __func__, (void *)xp); 2802 cv_signal(&xp->abort_cv); 2803 } 2804 mutex_exit(&xp->aqlock); 2805 mutex_enter(&pwp->cq_lock); 2806 STAILQ_INSERT_TAIL(&pwp->cq, sp, cmd_next); 2807 PMCS_CQ_RUN_LOCKED(pwp); 2808 mutex_exit(&pwp->cq_lock); 2809 } 2810 } 2811 2812 static uint8_t 2813 pmcs_SATA_rwparm(uint8_t *cdb, uint32_t *xfr, uint64_t *lba, uint64_t lbamax) 2814 { 2815 uint8_t asc = 0; 2816 switch (cdb[0]) { 2817 case SCMD_READ_G5: 2818 case SCMD_WRITE_G5: 2819 *xfr = 2820 (((uint32_t)cdb[10]) << 24) | 2821 (((uint32_t)cdb[11]) << 16) | 2822 (((uint32_t)cdb[12]) << 8) | 2823 ((uint32_t)cdb[13]); 2824 *lba = 2825 (((uint64_t)cdb[2]) << 56) | 2826 (((uint64_t)cdb[3]) << 48) | 2827 (((uint64_t)cdb[4]) << 40) | 2828 (((uint64_t)cdb[5]) << 32) | 2829 (((uint64_t)cdb[6]) << 24) | 2830 (((uint64_t)cdb[7]) << 16) | 2831 (((uint64_t)cdb[8]) << 8) | 2832 ((uint64_t)cdb[9]); 2833 /* Check for illegal bits */ 2834 if (cdb[15]) { 2835 asc = 0x24; /* invalid field in cdb */ 2836 } 2837 break; 2838 case SCMD_READ_G4: 2839 case SCMD_WRITE_G4: 2840 *xfr = 2841 (((uint32_t)cdb[6]) << 16) | 2842 (((uint32_t)cdb[7]) << 8) | 2843 ((uint32_t)cdb[8]); 2844 *lba = 2845 (((uint32_t)cdb[2]) << 24) | 2846 (((uint32_t)cdb[3]) << 16) | 2847 (((uint32_t)cdb[4]) << 8) | 2848 ((uint32_t)cdb[5]); 2849 /* Check for illegal bits */ 2850 if (cdb[11]) { 2851 asc = 0x24; /* invalid field in cdb */ 2852 } 2853 break; 2854 case SCMD_READ_G1: 2855 case SCMD_WRITE_G1: 2856 *xfr = (((uint32_t)cdb[7]) << 8) | ((uint32_t)cdb[8]); 2857 *lba = 2858 (((uint32_t)cdb[2]) << 24) | 2859 (((uint32_t)cdb[3]) << 16) | 2860 (((uint32_t)cdb[4]) << 8) | 2861 ((uint32_t)cdb[5]); 2862 /* Check for illegal bits */ 2863 if (cdb[9]) { 2864 asc = 0x24; /* invalid field in cdb */ 2865 } 2866 break; 2867 case SCMD_READ: 2868 case SCMD_WRITE: 2869 *xfr = cdb[4]; 2870 if (*xfr == 0) { 2871 *xfr = 256; 2872 } 2873 *lba = 2874 (((uint32_t)cdb[1] & 0x1f) << 16) | 2875 (((uint32_t)cdb[2]) << 8) | 2876 ((uint32_t)cdb[3]); 2877 /* Check for illegal bits */ 2878 if (cdb[5]) { 2879 asc = 0x24; /* invalid field in cdb */ 2880 } 2881 break; 2882 } 2883 2884 if (asc == 0) { 2885 if ((*lba + *xfr) > lbamax) { 2886 asc = 0x21; /* logical block out of range */ 2887 } 2888 } 2889 return (asc); 2890 } 2891 2892 /* 2893 * Called with pwrk lock held. 2894 */ 2895 static void 2896 pmcs_ioerror(pmcs_hw_t *pwp, pmcs_dtype_t t, pmcwork_t *pwrk, uint32_t *w, 2897 uint32_t status) 2898 { 2899 static uint8_t por[] = { 2900 0xf0, 0x0, 0x6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x28 2901 }; 2902 static uint8_t parity[] = { 2903 0xf0, 0x0, 0xb, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x47, 5 2904 }; 2905 const char *msg; 2906 char buf[20]; 2907 pmcs_cmd_t *sp = pwrk->arg; 2908 pmcs_phy_t *phyp = pwrk->phy; 2909 struct scsi_pkt *pkt = CMD2PKT(sp); 2910 uint32_t resid; 2911 2912 ASSERT(w != NULL); 2913 resid = LE_32(w[3]); 2914 2915 msg = pmcs_status_str(status); 2916 if (msg == NULL) { 2917 (void) snprintf(buf, sizeof (buf), "Error 0x%x", status); 2918 msg = buf; 2919 } 2920 2921 if (status != PMCOUT_STATUS_OK) { 2922 pmcs_prt(pwp, PMCS_PRT_DEBUG1, phyp, NULL, 2923 "%s: device %s tag 0x%x status %s @ %llu", __func__, 2924 phyp->path, pwrk->htag, msg, 2925 (unsigned long long)gethrtime()); 2926 } 2927 2928 pkt->pkt_reason = CMD_CMPLT; /* default reason */ 2929 2930 switch (status) { 2931 case PMCOUT_STATUS_OK: 2932 if (t == SATA) { 2933 int i; 2934 fis_t fis; 2935 for (i = 0; i < sizeof (fis) / sizeof (fis[0]); i++) { 2936 fis[i] = LE_32(w[4+i]); 2937 } 2938 if ((fis[0] & 0xff) != FIS_REG_D2H) { 2939 pmcs_prt(pwp, PMCS_PRT_DEBUG, phyp, NULL, 2940 "unexpected fis code 0x%x", fis[0] & 0xff); 2941 } else { 2942 pmcs_prt(pwp, PMCS_PRT_DEBUG, phyp, NULL, 2943 "FIS ERROR"); 2944 pmcs_fis_dump(pwp, fis); 2945 } 2946 pkt->pkt_reason = CMD_TRAN_ERR; 2947 break; 2948 } 2949 pmcs_latch_status(pwp, sp, STATUS_GOOD, NULL, 0, phyp->path); 2950 break; 2951 2952 case PMCOUT_STATUS_ABORTED: 2953 /* 2954 * Command successfully aborted. 2955 */ 2956 if (phyp->dead) { 2957 pkt->pkt_reason = CMD_DEV_GONE; 2958 pkt->pkt_state = STATE_GOT_BUS; 2959 } else if (pwrk->ssp_event != 0) { 2960 pkt->pkt_reason = CMD_TRAN_ERR; 2961 pkt->pkt_state = STATE_GOT_BUS; 2962 } else if (pwrk->state == PMCS_WORK_STATE_TIMED_OUT) { 2963 pkt->pkt_reason = CMD_TIMEOUT; 2964 pkt->pkt_statistics |= STAT_TIMEOUT; 2965 pkt->pkt_state = STATE_GOT_BUS | STATE_GOT_TARGET | 2966 STATE_SENT_CMD; 2967 } else { 2968 pkt->pkt_reason = CMD_ABORTED; 2969 pkt->pkt_statistics |= STAT_ABORTED; 2970 pkt->pkt_state = STATE_GOT_BUS | STATE_GOT_TARGET | 2971 STATE_SENT_CMD; 2972 } 2973 2974 /* 2975 * PMCS_WORK_STATE_TIMED_OUT doesn't need to be preserved past 2976 * this point, so go ahead and mark it as aborted. 2977 */ 2978 pwrk->state = PMCS_WORK_STATE_ABORTED; 2979 break; 2980 2981 case PMCOUT_STATUS_UNDERFLOW: 2982 /* 2983 * This will only get called for SATA 2984 */ 2985 pkt->pkt_resid = resid; 2986 if (pkt->pkt_dma_len < pkt->pkt_resid) { 2987 (void) pmcs_set_resid(pkt, pkt->pkt_dma_len, resid); 2988 } 2989 pmcs_latch_status(pwp, sp, STATUS_GOOD, NULL, 0, phyp->path); 2990 break; 2991 2992 case PMCOUT_STATUS_NO_DEVICE: 2993 case PMCOUT_STATUS_XFER_ERROR_SATA_LINK_TIMEOUT: 2994 pkt->pkt_reason = CMD_DEV_GONE; 2995 break; 2996 2997 case PMCOUT_STATUS_OPEN_CNX_ERROR_WRONG_DESTINATION: 2998 /* 2999 * Need to do rediscovery. We probably have 3000 * the wrong device (disk swap), so kill 3001 * this one. 3002 */ 3003 case PMCOUT_STATUS_OPEN_CNX_PROTOCOL_NOT_SUPPORTED: 3004 case PMCOUT_STATUS_OPEN_CNX_ERROR_ZONE_VIOLATION: 3005 case PMCOUT_STATUS_OPEN_CNX_ERROR_CONNECTION_RATE_NOT_SUPPORTED: 3006 case PMCOUT_STATUS_OPEN_CNX_ERROR_UNKNOWN_ERROR: 3007 /* 3008 * Need to do rediscovery. 3009 */ 3010 if (!phyp->dead) { 3011 mutex_exit(&pwrk->lock); 3012 pmcs_lock_phy(pwrk->phy); 3013 pmcs_kill_changed(pwp, pwrk->phy, 0); 3014 pmcs_unlock_phy(pwrk->phy); 3015 mutex_enter(&pwrk->lock); 3016 pkt->pkt_reason = CMD_INCOMPLETE; 3017 pkt->pkt_state = STATE_GOT_BUS; 3018 } else { 3019 pkt->pkt_reason = CMD_DEV_GONE; 3020 } 3021 break; 3022 3023 case PMCOUT_STATUS_OPEN_CNX_ERROR_BREAK: 3024 case PMCOUT_STATUS_OPEN_CNX_ERROR_IT_NEXUS_LOSS: 3025 case PMCOUT_STATUS_OPENCNX_ERROR_BAD_DESTINATION: 3026 case PMCOUT_STATUS_IO_XFER_ERROR_NAK_RECEIVED: 3027 /* cmd is pending on the target */ 3028 case PMCOUT_STATUS_XFER_ERROR_OFFSET_MISMATCH: 3029 case PMCOUT_STATUS_XFER_ERROR_REJECTED_NCQ_MODE: 3030 /* transitory - commands sent while in NCQ failure mode */ 3031 case PMCOUT_STATUS_XFER_ERROR_ABORTED_NCQ_MODE: 3032 /* NCQ failure */ 3033 case PMCOUT_STATUS_IO_PORT_IN_RESET: 3034 case PMCOUT_STATUS_XFER_ERR_BREAK: 3035 case PMCOUT_STATUS_XFER_ERR_PHY_NOT_READY: 3036 pkt->pkt_reason = CMD_INCOMPLETE; 3037 pkt->pkt_state = STATE_GOT_BUS; 3038 break; 3039 3040 case PMCOUT_STATUS_IO_XFER_OPEN_RETRY_TIMEOUT: 3041 pmcs_prt(pwp, PMCS_PRT_DEBUG, phyp, phyp->target, 3042 "STATUS_BUSY for htag 0x%08x", sp->cmd_tag); 3043 pmcs_latch_status(pwp, sp, STATUS_BUSY, NULL, 0, phyp->path); 3044 break; 3045 3046 case PMCOUT_STATUS_OPEN_CNX_ERROR_STP_RESOURCES_BUSY: 3047 /* synthesize a RESERVATION CONFLICT */ 3048 pmcs_prt(pwp, PMCS_PRT_DEBUG, phyp, phyp->target, 3049 "%s: Potential affiliation active on 0x%" PRIx64, __func__, 3050 pmcs_barray2wwn(phyp->sas_address)); 3051 pmcs_latch_status(pwp, sp, STATUS_RESERVATION_CONFLICT, NULL, 3052 0, phyp->path); 3053 break; 3054 3055 case PMCOUT_STATUS_XFER_ERROR_ABORTED_DUE_TO_SRST: 3056 /* synthesize a power-on/reset */ 3057 pmcs_latch_status(pwp, sp, STATUS_CHECK, por, sizeof (por), 3058 phyp->path); 3059 break; 3060 3061 case PMCOUT_STATUS_XFER_ERROR_UNEXPECTED_PHASE: 3062 case PMCOUT_STATUS_XFER_ERROR_RDY_OVERRUN: 3063 case PMCOUT_STATUS_XFER_ERROR_RDY_NOT_EXPECTED: 3064 case PMCOUT_STATUS_XFER_ERROR_CMD_ISSUE_ACK_NAK_TIMEOUT: 3065 case PMCOUT_STATUS_XFER_ERROR_CMD_ISSUE_BREAK_BEFORE_ACK_NACK: 3066 case PMCOUT_STATUS_XFER_ERROR_CMD_ISSUE_PHY_DOWN_BEFORE_ACK_NAK: 3067 /* synthesize a PARITY ERROR */ 3068 pmcs_latch_status(pwp, sp, STATUS_CHECK, parity, 3069 sizeof (parity), phyp->path); 3070 break; 3071 3072 case PMCOUT_STATUS_IO_XFER_ERROR_DMA: 3073 case PMCOUT_STATUS_IO_NOT_VALID: 3074 case PMCOUT_STATUS_PROG_ERROR: 3075 case PMCOUT_STATUS_XFER_ERROR_PEER_ABORTED: 3076 case PMCOUT_STATUS_XFER_ERROR_SATA: /* non-NCQ failure */ 3077 default: 3078 pkt->pkt_reason = CMD_TRAN_ERR; 3079 break; 3080 } 3081 } 3082 3083 /* 3084 * Latch up SCSI status 3085 */ 3086 3087 void 3088 pmcs_latch_status(pmcs_hw_t *pwp, pmcs_cmd_t *sp, uint8_t status, 3089 uint8_t *snsp, size_t snslen, char *path) 3090 { 3091 static const char c1[] = 3092 "%s: Status Byte 0x%02x for CDB0=0x%02x (%02x %02x %02x) " 3093 "HTAG 0x%x @ %llu"; 3094 static const char c2[] = 3095 "%s: Status Byte 0x%02x for CDB0=0x%02x HTAG 0x%x @ %llu"; 3096 3097 CMD2PKT(sp)->pkt_state |= STATE_GOT_BUS | STATE_GOT_TARGET | 3098 STATE_SENT_CMD | STATE_GOT_STATUS; 3099 CMD2PKT(sp)->pkt_scbp[0] = status; 3100 3101 if (status == STATUS_CHECK && snsp && 3102 (size_t)SCSA_STSLEN(sp) >= sizeof (struct scsi_arq_status)) { 3103 struct scsi_arq_status *aqp = 3104 (void *) CMD2PKT(sp)->pkt_scbp; 3105 size_t amt = sizeof (struct scsi_extended_sense); 3106 uint8_t key = scsi_sense_key(snsp); 3107 uint8_t asc = scsi_sense_asc(snsp); 3108 uint8_t ascq = scsi_sense_ascq(snsp); 3109 if (amt > snslen) { 3110 amt = snslen; 3111 } 3112 pmcs_prt(pwp, PMCS_PRT_DEBUG_SCSI_STATUS, NULL, NULL, c1, path, 3113 status, CMD2PKT(sp)->pkt_cdbp[0] & 0xff, key, asc, ascq, 3114 sp->cmd_tag, (unsigned long long)gethrtime()); 3115 CMD2PKT(sp)->pkt_state |= STATE_ARQ_DONE; 3116 (*(uint8_t *)&aqp->sts_rqpkt_status) = STATUS_GOOD; 3117 aqp->sts_rqpkt_statistics = 0; 3118 aqp->sts_rqpkt_reason = CMD_CMPLT; 3119 aqp->sts_rqpkt_state = STATE_GOT_BUS | 3120 STATE_GOT_TARGET | STATE_SENT_CMD | 3121 STATE_XFERRED_DATA | STATE_GOT_STATUS; 3122 (void) memcpy(&aqp->sts_sensedata, snsp, amt); 3123 if (aqp->sts_sensedata.es_class != CLASS_EXTENDED_SENSE) { 3124 aqp->sts_rqpkt_reason = CMD_TRAN_ERR; 3125 aqp->sts_rqpkt_state = 0; 3126 aqp->sts_rqpkt_resid = 3127 sizeof (struct scsi_extended_sense); 3128 } else { 3129 aqp->sts_rqpkt_resid = 3130 sizeof (struct scsi_extended_sense) - amt; 3131 } 3132 } else if (status) { 3133 pmcs_prt(pwp, PMCS_PRT_DEBUG_SCSI_STATUS, NULL, NULL, c2, 3134 path, status, CMD2PKT(sp)->pkt_cdbp[0] & 0xff, 3135 sp->cmd_tag, (unsigned long long)gethrtime()); 3136 } 3137 3138 CMD2PKT(sp)->pkt_reason = CMD_CMPLT; 3139 } 3140 3141 /* 3142 * Calculate and set packet residual and return the amount 3143 * left over after applying various filters. 3144 */ 3145 size_t 3146 pmcs_set_resid(struct scsi_pkt *pkt, size_t amt, uint32_t cdbamt) 3147 { 3148 pkt->pkt_resid = cdbamt; 3149 if (amt > pkt->pkt_resid) { 3150 amt = pkt->pkt_resid; 3151 } 3152 if (amt > pkt->pkt_dma_len) { 3153 amt = pkt->pkt_dma_len; 3154 } 3155 return (amt); 3156 } 3157 3158 /* 3159 * Return the existing target softstate (unlocked) if there is one. If so, 3160 * the PHY is locked and that lock must be freed by the caller after the 3161 * target/PHY linkage is established. If there isn't one, and alloc_tgt is 3162 * TRUE, then allocate one. 3163 */ 3164 pmcs_xscsi_t * 3165 pmcs_get_target(pmcs_iport_t *iport, char *tgt_port, boolean_t alloc_tgt) 3166 { 3167 pmcs_hw_t *pwp = iport->pwp; 3168 pmcs_phy_t *phyp; 3169 pmcs_xscsi_t *tgt; 3170 uint64_t wwn; 3171 char unit_address[PMCS_MAX_UA_SIZE]; 3172 int ua_form = 1; 3173 3174 /* 3175 * Find the PHY for this target 3176 */ 3177 phyp = pmcs_find_phy_by_sas_address(pwp, iport, NULL, tgt_port); 3178 if (phyp == NULL) { 3179 pmcs_prt(pwp, PMCS_PRT_DEBUG3, NULL, NULL, 3180 "%s: No PHY for target @ %s", __func__, tgt_port); 3181 return (NULL); 3182 } 3183 3184 tgt = ddi_soft_state_bystr_get(iport->tgt_sstate, tgt_port); 3185 3186 if (tgt) { 3187 mutex_enter(&tgt->statlock); 3188 /* 3189 * There's already a target. Check its PHY pointer to see 3190 * if we need to clear the old linkages 3191 */ 3192 if (tgt->phy && (tgt->phy != phyp)) { 3193 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, tgt, 3194 "%s: Target PHY updated from %p to %p", __func__, 3195 (void *)tgt->phy, (void *)phyp); 3196 if (!IS_ROOT_PHY(tgt->phy)) { 3197 pmcs_dec_phy_ref_count(tgt->phy); 3198 pmcs_inc_phy_ref_count(phyp); 3199 } 3200 tgt->phy->target = NULL; 3201 } 3202 3203 /* 3204 * If this target has no PHY pointer and alloc_tgt is FALSE, 3205 * that implies we expect the target to already exist. This 3206 * implies that there has already been a tran_tgt_init on at 3207 * least one LU. 3208 */ 3209 if ((tgt->phy == NULL) && !alloc_tgt) { 3210 pmcs_prt(pwp, PMCS_PRT_DEBUG, phyp, tgt, 3211 "%s: Establish linkage from new PHY to old target @" 3212 "%s", __func__, tgt->unit_address); 3213 for (int idx = 0; idx < tgt->ref_count; idx++) { 3214 pmcs_inc_phy_ref_count(phyp); 3215 } 3216 } 3217 3218 /* 3219 * Set this target pointer back up, since it's been 3220 * through pmcs_clear_xp(). 3221 */ 3222 tgt->dev_gone = 0; 3223 tgt->assigned = 1; 3224 tgt->dtype = phyp->dtype; 3225 tgt->dev_state = PMCS_DEVICE_STATE_OPERATIONAL; 3226 tgt->phy = phyp; 3227 phyp->target = tgt; 3228 3229 mutex_exit(&tgt->statlock); 3230 return (tgt); 3231 } 3232 3233 /* 3234 * Make sure the PHY we found is on the correct iport 3235 */ 3236 if (phyp->iport != iport) { 3237 pmcs_prt(pwp, PMCS_PRT_DEBUG, phyp, NULL, 3238 "%s: No target at %s on this iport", __func__, tgt_port); 3239 pmcs_unlock_phy(phyp); 3240 return (NULL); 3241 } 3242 3243 /* 3244 * If this was just a lookup (i.e. alloc_tgt is false), return now. 3245 */ 3246 if (alloc_tgt == B_FALSE) { 3247 pmcs_unlock_phy(phyp); 3248 return (NULL); 3249 } 3250 3251 /* 3252 * Allocate the new softstate 3253 */ 3254 wwn = pmcs_barray2wwn(phyp->sas_address); 3255 (void) scsi_wwn_to_wwnstr(wwn, ua_form, unit_address); 3256 3257 if (ddi_soft_state_bystr_zalloc(iport->tgt_sstate, unit_address) != 3258 DDI_SUCCESS) { 3259 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, tgt, 3260 "%s: Couldn't alloc softstate for device at %s", 3261 __func__, unit_address); 3262 pmcs_unlock_phy(phyp); 3263 return (NULL); 3264 } 3265 3266 tgt = ddi_soft_state_bystr_get(iport->tgt_sstate, unit_address); 3267 ASSERT(tgt != NULL); 3268 STAILQ_INIT(&tgt->wq); 3269 STAILQ_INIT(&tgt->aq); 3270 STAILQ_INIT(&tgt->sq); 3271 mutex_init(&tgt->statlock, NULL, MUTEX_DRIVER, 3272 DDI_INTR_PRI(pwp->intr_pri)); 3273 mutex_init(&tgt->wqlock, NULL, MUTEX_DRIVER, 3274 DDI_INTR_PRI(pwp->intr_pri)); 3275 mutex_init(&tgt->aqlock, NULL, MUTEX_DRIVER, 3276 DDI_INTR_PRI(pwp->intr_pri)); 3277 cv_init(&tgt->reset_cv, NULL, CV_DRIVER, NULL); 3278 cv_init(&tgt->abort_cv, NULL, CV_DRIVER, NULL); 3279 list_create(&tgt->lun_list, sizeof (pmcs_lun_t), 3280 offsetof(pmcs_lun_t, lun_list_next)); 3281 tgt->qdepth = 1; 3282 tgt->target_num = PMCS_INVALID_TARGET_NUM; 3283 bcopy(unit_address, tgt->unit_address, PMCS_MAX_UA_SIZE); 3284 tgt->pwp = pwp; 3285 tgt->ua = strdup(iport->ua); 3286 tgt->phy = phyp; 3287 ASSERT((phyp->target == NULL) || (phyp->target == tgt)); 3288 if (phyp->target == NULL) { 3289 phyp->target = tgt; 3290 } 3291 3292 /* 3293 * Don't allocate LUN softstate for SMP targets 3294 */ 3295 if (phyp->dtype == EXPANDER) { 3296 return (tgt); 3297 } 3298 3299 if (ddi_soft_state_bystr_init(&tgt->lun_sstate, 3300 sizeof (pmcs_lun_t), PMCS_LUN_SSTATE_SZ) != 0) { 3301 pmcs_prt(pwp, PMCS_PRT_DEBUG_CONFIG, phyp, tgt, 3302 "%s: LUN soft_state_bystr_init failed", __func__); 3303 ddi_soft_state_bystr_free(iport->tgt_sstate, tgt_port); 3304 pmcs_unlock_phy(phyp); 3305 return (NULL); 3306 } 3307 3308 return (tgt); 3309 } 3310