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