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) 1990, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 /* 26 * Utility SCSI configuration routines 27 */ 28 /* 29 * Many routines in this file have built in parallel bus assumption 30 * which might need to change as other interconnect evolve. 31 */ 32 33 #include <sys/scsi/scsi.h> 34 #include <sys/modctl.h> 35 #include <sys/bitmap.h> 36 #include <sys/fm/protocol.h> 37 38 /* 39 * macro for filling in lun value for scsi-1 support 40 */ 41 42 #define FILL_SCSI1_LUN(sd, pkt) \ 43 if ((sd->sd_address.a_lun > 0) && \ 44 (sd->sd_inq->inq_ansi == 0x1)) { \ 45 ((union scsi_cdb *)(pkt)->pkt_cdbp)->scc_lun = \ 46 sd->sd_address.a_lun; \ 47 } 48 49 extern struct mod_ops mod_miscops; 50 51 static struct modlmisc modlmisc = { 52 &mod_miscops, /* Type of module */ 53 "SCSI Bus Utility Routines" 54 }; 55 56 static struct modlinkage modlinkage = { 57 MODREV_1, (void *)&modlmisc, NULL 58 }; 59 60 /* 61 * Contexts from which we call scsi_test 62 */ 63 enum scsi_test_ctxt { 64 /* 65 * Those in scsi_hba_probe_pi() 66 */ 67 STC_PROBE_FIRST_INQ, 68 STC_PROBE_FIRST_INQ_RETRY, 69 STC_PROBE_PARTIAL_SUCCESS, 70 STC_PROBE_RQSENSE1, 71 STC_PROBE_CHK_CLEARED, 72 STC_PROBE_RQSENSE2, 73 STC_PROBE_INQ_FINAL, 74 /* 75 * Those in check_vpd_page_support8083() 76 */ 77 STC_VPD_CHECK, 78 /* 79 * Those in scsi_device_identity() 80 */ 81 STC_IDENTITY_PG80, 82 STC_IDENTITY_PG83, 83 }; 84 85 static void create_inquiry_props(struct scsi_device *); 86 87 static int scsi_check_ss2_LUN_limit(struct scsi_device *); 88 static void scsi_establish_LUN_limit(struct scsi_device *); 89 static void scsi_update_parent_ss2_prop(dev_info_t *, int, int); 90 91 static int check_vpd_page_support8083(struct scsi_device *sd, 92 int (*callback)(), int *, int *); 93 static int send_scsi_INQUIRY(struct scsi_device *sd, 94 int (*callback)(), uchar_t *bufaddr, size_t buflen, 95 uchar_t evpd, uchar_t page_code, size_t *lenp, 96 enum scsi_test_ctxt); 97 98 /* 99 * this int-array HBA-node property keeps track of strictly SCSI-2 100 * target IDs 101 */ 102 #define SS2_LUN0_TGT_LIST_PROP "ss2-targets" 103 104 /* 105 * for keeping track of nodes for which we do *NOT* want to probe above LUN 7 106 * (i.e. strict SCSI-2 targets) 107 * 108 * note that we could also keep track of dtype (SCSI device type) and 109 * ANSI (SCSI standard conformance level), but all currently-known cases of 110 * this problem are on SCSI-2 PROCESSOR device types 111 */ 112 typedef struct ss2_lun0_info { 113 const char *sli_vid; /* SCSI inquiry VID */ 114 const char *sli_pid; /* SCSI inquiry PID */ 115 const char *sli_rev; /* SCSI inquiry REV */ 116 } ss2_lun0_info_t; 117 118 /* 119 * these two workarounds are for the SCSI-2 GEM2* chips used in the 120 * D1000 and D240 121 */ 122 #define SES_D1000_VID "SYMBIOS" 123 #define SES_D1000_PID "D1000" /* the D1000 */ 124 #define SES_D1000_REV "2" 125 126 #define SES_D240_VID "SUN" 127 #define SES_D240_PID "D240" /* the D240 */ 128 #define SES_D240_REV "2" 129 130 /* 131 * a static list of targets where we do *not* want to probe above LUN 7 132 */ 133 static const ss2_lun0_info_t scsi_probe_strict_s2_list[] = { 134 {SES_D1000_VID, SES_D1000_PID, SES_D1000_REV}, 135 {SES_D240_VID, SES_D240_PID, SES_D240_REV}, 136 }; 137 138 static const int scsi_probe_strict_s2_size = 139 sizeof (scsi_probe_strict_s2_list) / sizeof (struct ss2_lun0_info); 140 141 142 #ifdef DEBUG 143 144 int scsi_probe_debug = 0; 145 146 #define SCSI_PROBE_DEBUG0(l, s) \ 147 if (scsi_probe_debug >= (l)) printf(s) 148 #define SCSI_PROBE_DEBUG1(l, s, a1) \ 149 if (scsi_probe_debug >= (l)) printf(s, a1) 150 #define SCSI_PROBE_DEBUG2(l, s, a1, a2) \ 151 if (scsi_probe_debug >= (l)) printf(s, a1, a2) 152 #define SCSI_PROBE_DEBUG3(l, s, a1, a2, a3) \ 153 if (scsi_probe_debug >= (l)) printf(s, a1, a2, a3) 154 155 #else /* DEBUG */ 156 157 #define SCSI_PROBE_DEBUG0(l, s) 158 #define SCSI_PROBE_DEBUG1(l, s, a1) 159 #define SCSI_PROBE_DEBUG2(l, s, a1, a2) 160 #define SCSI_PROBE_DEBUG3(l, s, a1, a2, a3) 161 162 #endif /* DEBUG */ 163 164 int scsi_test_busy_timeout = SCSI_POLL_TIMEOUT; /* in seconds */ 165 int scsi_test_busy_delay = 10000; /* 10msec in usec */ 166 167 168 /* 169 * Returns from scsi_test. 170 * 171 * SCSI_TEST_CMPLT_GOOD => TRAN_ACCEPT, CMD_CMPLT, STATUS_GOOD 172 * 173 * SCSI_TEST_CMPLT_BUSY => TRAN_ACCEPT, CMD_CMPLT, STATUS_BUSY 174 * 175 * SCSI_TEST_CMPLT_CHECK => TRAN_ACCEPT, CMD_CMPLT, STATUS_CHECK 176 * 177 * SCSI_TEST_CMPLT_OTHER => TRAN_ACCEPT, CMD_CMPLT, !STATUS_{GOOD,BUSY,CHECK} 178 * 179 * SCSI_TEST_CMD_INCOMPLETE => TRAN_ACCEPT, CMD_INCOMPLETE 180 * 181 * SCSI_TEST_NOTCMPLT => TRAN_ACCEPT, pkt_reason != CMD_{CMPLT,INCOMPLETE} 182 * 183 * SCSI_TEST_TRAN_BUSY => (Repeated) TRAN_BUSY from attempt scsi_transport 184 * 185 * SCSI_TEST_TRAN_REJECT => TRAN_BADPKT or TRAN_FATAL_ERROR 186 * 187 */ 188 #define SCSI_TEST_CMPLT_GOOD 0x01U 189 #define SCSI_TEST_CMPLT_BUSY 0x02U 190 #define SCSI_TEST_CMPLT_CHECK 0x04U 191 #define SCSI_TEST_CMPLT_OTHER 0x08U 192 193 #define SCSI_TEST_CMPLTMASK \ 194 (SCSI_TEST_CMPLT_GOOD | SCSI_TEST_CMPLT_BUSY | \ 195 SCSI_TEST_CMPLT_CHECK | SCSI_TEST_CMPLT_OTHER) 196 197 #define SCSI_TEST_PARTCMPLTMASK \ 198 (SCSI_TEST_CMPLTMASK & ~SCSI_TEST_CMPLT_GOOD) 199 200 #define SCSI_TEST_CMD_INCOMPLETE 0x10U 201 #define SCSI_TEST_NOTCMPLT 0x20U 202 #define SCSI_TEST_TRAN_BUSY 0x40U 203 #define SCSI_TEST_TRAN_REJECT 0x80U 204 205 #define SCSI_TEST_FAILMASK \ 206 (SCSI_TEST_CMD_INCOMPLETE | SCSI_TEST_NOTCMPLT | \ 207 SCSI_TEST_TRAN_BUSY | SCSI_TEST_TRAN_REJECT) 208 209 #define SCSI_TEST_FAILURE(x) (((x) & SCSI_TEST_FAILMASK) != 0) 210 211 /* 212 * architecture dependent allocation restrictions. For x86, we'll set 213 * dma_attr_addr_hi to scsi_max_phys_addr and dma_attr_sgllen to 214 * scsi_sgl_size during _init(). 215 */ 216 #if defined(__sparc) 217 ddi_dma_attr_t scsi_alloc_attr = { 218 DMA_ATTR_V0, /* version number */ 219 0x0, /* lowest usable address */ 220 0xFFFFFFFFull, /* high DMA address range */ 221 0xFFFFFFFFull, /* DMA counter register */ 222 1, /* DMA address alignment */ 223 1, /* DMA burstsizes */ 224 1, /* min effective DMA size */ 225 0xFFFFFFFFull, /* max DMA xfer size */ 226 0xFFFFFFFFull, /* segment boundary */ 227 1, /* s/g list length */ 228 512, /* granularity of device */ 229 0 /* DMA transfer flags */ 230 }; 231 #elif defined(__x86) 232 ddi_dma_attr_t scsi_alloc_attr = { 233 DMA_ATTR_V0, /* version number */ 234 0x0, /* lowest usable address */ 235 0x0, /* high DMA address range [set in _init()] */ 236 0xFFFFull, /* DMA counter register */ 237 1, /* DMA address alignment */ 238 1, /* DMA burstsizes */ 239 1, /* min effective DMA size */ 240 0xFFFFFFFFull, /* max DMA xfer size */ 241 0xFFFFFFFFull, /* segment boundary */ 242 0, /* s/g list length */ 243 512, /* granularity of device [set in _init()] */ 244 0 /* DMA transfer flags */ 245 }; 246 uint64_t scsi_max_phys_addr = 0xFFFFFFFFull; 247 int scsi_sgl_size = 0xFF; 248 #endif 249 250 ulong_t *scsi_pkt_bad_alloc_bitmap; 251 252 int 253 _init() 254 { 255 scsi_initialize_hba_interface(); 256 scsi_watch_init(); 257 258 #if defined(__x86) 259 /* set the max physical address for iob allocs on x86 */ 260 scsi_alloc_attr.dma_attr_addr_hi = scsi_max_phys_addr; 261 262 /* 263 * set the sgllen for iob allocs on x86. If this is set less than 264 * the number of pages the buffer will take (taking into account 265 * alignment), it would force the allocator to try and allocate 266 * contiguous pages. 267 */ 268 scsi_alloc_attr.dma_attr_sgllen = scsi_sgl_size; 269 #endif 270 271 /* bitmap to limit scsi_pkt allocation violation messages */ 272 scsi_pkt_bad_alloc_bitmap = kmem_zalloc(BT_SIZEOFMAP(devcnt), KM_SLEEP); 273 274 return (mod_install(&modlinkage)); 275 } 276 277 /* 278 * there is no _fini() routine because this module is never unloaded 279 */ 280 281 int 282 _info(struct modinfo *modinfop) 283 { 284 return (mod_info(&modlinkage, modinfop)); 285 } 286 287 #define ROUTE (&sd->sd_address) 288 289 static int 290 scsi_slave_do_rqsense(struct scsi_device *sd, int (*callback)()) 291 { 292 struct scsi_pkt *rq_pkt = NULL; 293 struct buf *rq_bp = NULL; 294 int rval = SCSIPROBE_EXISTS; 295 296 /* 297 * prepare rqsense packet 298 */ 299 rq_bp = scsi_alloc_consistent_buf(ROUTE, (struct buf *)NULL, 300 (uint_t)SENSE_LENGTH, B_READ, callback, NULL); 301 if (rq_bp == NULL) { 302 rval = SCSIPROBE_NOMEM; 303 goto out; 304 } 305 306 rq_pkt = scsi_init_pkt(ROUTE, (struct scsi_pkt *)NULL, 307 rq_bp, CDB_GROUP0, 1, 0, PKT_CONSISTENT, 308 callback, NULL); 309 310 if (rq_pkt == NULL) { 311 if (rq_bp->b_error == 0) 312 rval = SCSIPROBE_NOMEM_CB; 313 else 314 rval = SCSIPROBE_NOMEM; 315 goto out; 316 } 317 ASSERT(rq_bp->b_error == 0); 318 319 (void) scsi_setup_cdb((union scsi_cdb *)rq_pkt-> 320 pkt_cdbp, SCMD_REQUEST_SENSE, 0, SENSE_LENGTH, 0); 321 FILL_SCSI1_LUN(sd, rq_pkt); 322 rq_pkt->pkt_flags = FLAG_NOINTR|FLAG_NOPARITY|FLAG_SENSING; 323 324 /* 325 * The controller type is as yet unknown, so we 326 * have to do a throwaway non-extended request sense, 327 * and hope that that clears the check condition 328 * for that unit until we can find out what kind 329 * of drive it is. A non-extended request sense 330 * is specified by stating that the sense block 331 * has 0 length, which is taken to mean that it 332 * is four bytes in length. 333 */ 334 if (scsi_poll(rq_pkt) < 0) { 335 rval = SCSIPROBE_FAILURE; 336 } 337 338 out: 339 if (rq_pkt) { 340 scsi_destroy_pkt(rq_pkt); 341 } 342 if (rq_bp) { 343 scsi_free_consistent_buf(rq_bp); 344 } 345 346 return (rval); 347 } 348 349 /* 350 * 351 * SCSI slave probe routine - provided as a service to target drivers 352 * 353 * Mostly attempts to allocate and fill sd inquiry data.. 354 */ 355 356 int 357 scsi_slave(struct scsi_device *sd, int (*callback)()) 358 { 359 struct scsi_pkt *pkt; 360 int rval = SCSIPROBE_EXISTS; 361 362 /* 363 * the first test unit ready will tell us whether a target 364 * responded and if there was one, it will clear the unit attention 365 * condition 366 */ 367 pkt = scsi_init_pkt(ROUTE, (struct scsi_pkt *)NULL, NULL, 368 CDB_GROUP0, sizeof (struct scsi_arq_status), 0, 0, callback, NULL); 369 370 if (pkt == NULL) { 371 return (SCSIPROBE_NOMEM_CB); 372 } 373 374 (void) scsi_setup_cdb((union scsi_cdb *)pkt->pkt_cdbp, 375 SCMD_TEST_UNIT_READY, 0, 0, 0); 376 FILL_SCSI1_LUN(sd, pkt); 377 pkt->pkt_flags = FLAG_NOINTR|FLAG_NOPARITY; 378 379 if (scsi_poll(pkt) < 0) { 380 if (pkt->pkt_reason == CMD_INCOMPLETE) 381 rval = SCSIPROBE_NORESP; 382 else 383 rval = SCSIPROBE_FAILURE; 384 385 if ((pkt->pkt_state & STATE_ARQ_DONE) == 0) { 386 if (((struct scsi_status *)pkt->pkt_scbp)->sts_chk) 387 /* 388 * scanner and processor devices can return a 389 * check condition here 390 */ 391 rval = scsi_slave_do_rqsense(sd, callback); 392 } 393 394 if (rval != SCSIPROBE_EXISTS) { 395 scsi_destroy_pkt(pkt); 396 return (rval); 397 } 398 } 399 400 /* 401 * the second test unit ready, allows the host adapter to negotiate 402 * synchronous transfer period and offset 403 */ 404 if (scsi_poll(pkt) < 0) { 405 if (pkt->pkt_reason == CMD_INCOMPLETE) 406 rval = SCSIPROBE_NORESP; 407 else 408 rval = SCSIPROBE_FAILURE; 409 } 410 411 /* 412 * do a rqsense if there was a check condition and ARQ was not done 413 */ 414 if ((pkt->pkt_state & STATE_ARQ_DONE) == 0) { 415 if (((struct scsi_status *)pkt->pkt_scbp)->sts_chk) { 416 rval = scsi_slave_do_rqsense(sd, callback); 417 } 418 } 419 420 /* 421 * call scsi_probe to do the inquiry 422 * 423 * NOTE: there is minor difference with the old scsi_slave 424 * implementation: busy conditions are not handled in scsi_probe. 425 */ 426 scsi_destroy_pkt(pkt); 427 if (rval == SCSIPROBE_EXISTS) { 428 return (scsi_probe(sd, callback)); 429 } else { 430 return (rval); 431 } 432 } 433 434 /* 435 * Undo scsi_slave - older interface, but still supported 436 * 437 * NOTE: The 'sd_inq' inquiry data is now freed by scsi_hba/scsi_vhci code 438 * as part of free of scsi_device(9S). 439 */ 440 /*ARGSUSED*/ 441 void 442 scsi_unslave(struct scsi_device *sd) 443 { 444 } 445 446 /* 447 * Undo scsi_probe 448 * 449 * NOTE: The 'sd_inq' inquiry data is now freed by scsi_hba/scsi_vhci code 450 * as part of free of scsi_device(9S). 451 */ 452 /*ARGSUSED*/ 453 void 454 scsi_unprobe(struct scsi_device *sd) 455 { 456 } 457 458 /* 459 * We log all scsi_test failures (as long as we are SE_HP etc). The 460 * following table controls the "driver-assessment" payload item 461 * in the ereports we raise. If a scsi_test return features in the 462 * retry mask then the calling context will retry; if it features in 463 * the fatal mask then the caller will not retry (although higher-level 464 * software might); if in neither (which shouldn't happen - you either 465 * retry or give up) default to 'retry'. 466 */ 467 static const struct scsi_test_profile { 468 enum scsi_test_ctxt stp_ctxt; /* Calling context */ 469 uint32_t stp_retrymask; /* Returns caller will retry for */ 470 uint32_t stp_fatalmask; /* Returns caller considers fatal */ 471 } scsi_test_profile[] = { 472 /* 473 * This caller will retry on SCSI_TEST_FAILMASK as long as it was 474 * not SCSI_TEST_CMD_INCOMPLETE which is terminal. A return from 475 * SCSI_TEST_PARTCMPLTMASK (command complete but status other than 476 * STATUS_GOOD) is not terminal and we'll move on to the context 477 * of STC_PROBE_PARTIAL_SUCCESS so that's a retry, too. 478 */ 479 { 480 STC_PROBE_FIRST_INQ, 481 SCSI_TEST_FAILMASK & ~SCSI_TEST_CMD_INCOMPLETE | 482 SCSI_TEST_PARTCMPLTMASK, 483 SCSI_TEST_CMD_INCOMPLETE 484 }, 485 486 /* 487 * If the first inquiry fails outright we always retry just once 488 * (except for SCSI_TEST_CMD_INCOMPLETE as above). A return in 489 * SCSI_TEST_FAILMASK is terminal; for SCSI_TEST_PARTCMPLTMASK 490 * we will retry at STC_PROBE_PARTIAL_SUCCESS. 491 */ 492 { 493 STC_PROBE_FIRST_INQ_RETRY, 494 SCSI_TEST_PARTCMPLTMASK, 495 SCSI_TEST_FAILMASK 496 }, 497 498 /* 499 * If we've met with partial success we retry at caller context 500 * STC_PROBE_PARTIAL_SUCCESS. Any SCSI_TEST_FAILMASK return 501 * here is terminal, as too is SCSI_TEST_CMPLT_BUSY. A return in 502 * SCSI_TEST_PARTCMPLTMASK and we will continue with further 503 * inquiry attempts. 504 */ 505 { 506 STC_PROBE_PARTIAL_SUCCESS, 507 SCSI_TEST_PARTCMPLTMASK & ~SCSI_TEST_CMPLT_BUSY, 508 SCSI_TEST_FAILMASK | SCSI_TEST_CMPLT_BUSY 509 }, 510 511 /* 512 * If we get past the above target busy case then we will 513 * perform a sense request if scsi_test indicates STATUS_CHECK 514 * and ARQ was not done. We are not interested in logging telemetry 515 * for transports that do not perform ARQ automatically. 516 */ 517 { 518 STC_PROBE_RQSENSE1, 519 0, 520 0 521 }, 522 523 /* 524 * If "something" responded to the probe but then the next inquiry 525 * sees a change of heart then we fail the probe on any of 526 * SCSI_TEST_FAILMASK or SCSI_TEST_CMPLT_BUSY. For other values 527 * in SCSI_TEST_PARTCMPLTMASK we soldier on. 528 */ 529 { 530 STC_PROBE_CHK_CLEARED, 531 SCSI_TEST_PARTCMPLTMASK & ~SCSI_TEST_CMPLT_BUSY, 532 SCSI_TEST_FAILMASK | SCSI_TEST_CMPLT_BUSY 533 }, 534 535 /* 536 * If after all that there we still have STATUS_CHECK from the 537 * inquiry status then we resend the sense request but the 538 * result is ignored (just clearing the condition). Do not 539 * log. 540 */ 541 { 542 STC_PROBE_RQSENSE2, 543 0, 544 0 545 }, 546 547 /* 548 * After the above sense request we once again send an inquiry. 549 * If it fails outright or STATUS_CHECK persists we give up. 550 * Any partial result is considered success. 551 */ 552 { 553 STC_PROBE_INQ_FINAL, 554 0, 555 SCSI_TEST_FAILMASK | SCSI_TEST_CMPLT_CHECK 556 }, 557 558 /* 559 * check_vpd_page_support8083 called from scsi_device_identity 560 * performs an inquiry with EVPD set (and page necessarily 0) 561 * to see what pages are supported. 562 * 563 * Some devices do not support this command and therefore 564 * check_vpd_page_support8083 only returns an error of kmem_zalloc 565 * fails. If the send_scsi_INQUIRY does not meet with complete 566 * success (SCSI_TEST_CMPLT_GOOD) it returns -1, othewise 0. 567 * So any scsi_test failure here will cause us to assume no page 568 * 80/83 support, and we will proceed without devid support. 569 * So -1 returns from send_scsi_INQUIRY are not terminal. 570 */ 571 { 572 STC_VPD_CHECK, 573 0, 574 0 575 }, 576 577 /* 578 * If the above inquiry claims pg80 support then scsi_device_identity 579 * will perform a send_scsi_INQUIRY to retrieve that page. 580 * Anything other than SCSI_TEST_CMPLT_GOOD is a failure and will 581 * cause scsi_device_identity to return non-zero at which point the 582 * caller goes to SCSIPROBE_FAILURE. 583 */ 584 { 585 STC_IDENTITY_PG80, 586 0, 587 SCSI_TEST_FAILMASK | SCSI_TEST_CMPLTMASK 588 }, 589 590 /* 591 * Similarly for pg83 592 */ 593 { 594 STC_IDENTITY_PG83, 595 0, 596 SCSI_TEST_FAILMASK | SCSI_TEST_CMPLTMASK 597 } 598 }; 599 600 int scsi_test_ereport_disable = 0; 601 602 extern int e_devid_cache_path_to_devid(char *, char *, char *, ddi_devid_t *); 603 604 static void 605 scsi_test_ereport_post(struct scsi_pkt *pkt, enum scsi_test_ctxt ctxt, 606 uint32_t stresult) 607 { 608 char *nodename = NULL, *devidstr_buf = NULL, *devidstr = NULL; 609 const struct scsi_test_profile *tp = &scsi_test_profile[ctxt]; 610 char ua[SCSI_MAXNAMELEN], nodenamebuf[SCSI_MAXNAMELEN]; 611 union scsi_cdb *cdbp = (union scsi_cdb *)pkt->pkt_cdbp; 612 struct scsi_address *ap = &pkt->pkt_address; 613 char *tgt_port, *tpl0 = NULL; 614 ddi_devid_t devid = NULL; 615 dev_info_t *probe, *hba; 616 struct scsi_device *sd; 617 scsi_lun64_t lun64; 618 const char *d_ass; 619 const char *class; 620 char *pathbuf; 621 nvlist_t *pl; 622 uint64_t wwn; 623 int err = 0; 624 int dad = 0; 625 size_t len; 626 int lun; 627 628 if (scsi_test_ereport_disable) 629 return; 630 631 ASSERT(tp->stp_ctxt == ctxt); 632 633 if ((sd = scsi_address_device(ap)) == NULL) 634 return; /* Not SCSI_HBA_ADDR_COMPLEX */ 635 636 probe = sd->sd_dev; 637 hba = ddi_get_parent(probe); 638 639 /* 640 * We only raise telemetry for SE_HP style enumeration 641 */ 642 if (!ndi_dev_is_hotplug_node(hba)) 643 return; 644 645 /* 646 * scsi_fm_ereport_post will use the hba for the fm-enabled devinfo 647 */ 648 if (!DDI_FM_EREPORT_CAP(ddi_fm_capable(hba))) 649 return; 650 651 /* 652 * Retrieve the unit address we were probing and the target 653 * port component thereof. 654 */ 655 if (!scsi_ua_get(sd, ua, sizeof (ua)) || 656 scsi_device_prop_lookup_string(sd, SCSI_DEVICE_PROP_PATH, 657 SCSI_ADDR_PROP_TARGET_PORT, &tgt_port) != DDI_PROP_SUCCESS) 658 return; 659 660 /* 661 * Determine whether unit address is location based or identity (wwn) 662 * based. If we can't convert the target port address to a wwn then 663 * we're location based. 664 */ 665 if (scsi_wwnstr_to_wwn(tgt_port, &wwn) == DDI_FAILURE) 666 return; 667 668 /* 669 * Get lun and lun64 670 */ 671 lun = scsi_device_prop_get_int(sd, SCSI_DEVICE_PROP_PATH, 672 SCSI_ADDR_PROP_LUN, 0); 673 lun64 = scsi_device_prop_get_int64(sd, SCSI_DEVICE_PROP_PATH, 674 SCSI_ADDR_PROP_LUN64, lun); 675 676 /* 677 * We are guaranteed not to be in interrupt or any other 678 * problematic context. So instead of repeated varargs 679 * style calls to scsi_fm_ereport_post for each flavour of 680 * ereport we have the luxury of being able to allocate 681 * and build an nvlist here. 682 * 683 * The ereports we raise here are all under the category 684 * ereport.io.scsi.cmd.disk category, namely 685 * 686 * ereport.io.scsi.cmd.disk. 687 * {dev.rqs.derr,dev.serr,tran}. 688 * 689 * For all ereports we also add the scsi_test specific payload. 690 * If we have it then we always include the devid in the payload 691 * (but only in the detector for device-as-detector ereports). 692 * 693 * Inherited From Member Name 694 * -------------------- ------------------- 695 * .cmd driver-assessment 696 * .cmd op-code 697 * .cmd cdb 698 * .cmd pkt-reason 699 * .cmd pkt-state 700 * .cmd pkt-stats 701 * .cmd.disk stat-code 702 * - scsi-test-return 703 * - scsi-test-context 704 */ 705 706 if (nvlist_alloc(&pl, NV_UNIQUE_NAME, 0) != 0) 707 return; 708 709 err |= nvlist_add_uint8(pl, "op-code", cdbp->scc_cmd); 710 err |= nvlist_add_uint8_array(pl, "cdb", pkt->pkt_cdbp, 711 pkt->pkt_cdblen); 712 err |= nvlist_add_uint8(pl, "pkt-reason", pkt->pkt_reason); 713 err |= nvlist_add_uint32(pl, "pkt-state", pkt->pkt_state); 714 err |= nvlist_add_uint32(pl, "pkt-stats", pkt->pkt_statistics); 715 err |= nvlist_add_uint32(pl, "stat-code", *pkt->pkt_scbp); 716 err |= nvlist_add_uint32(pl, "scsi-test-return", stresult); 717 err |= nvlist_add_int32(pl, "scsi-test-context", ctxt); 718 719 switch (stresult) { 720 case SCSI_TEST_CMPLT_BUSY: 721 dad = 1; 722 class = "cmd.disk.dev.serr"; 723 break; 724 725 case SCSI_TEST_CMPLT_CHECK: 726 dad = 1; 727 728 if ((pkt->pkt_state & STATE_ARQ_DONE)) { 729 struct scsi_arq_status *arqstat; 730 uint8_t key, asc, ascq; 731 uint8_t *sensep; 732 733 class = "cmd.disk.dev.rqs.derr"; 734 arqstat = (struct scsi_arq_status *)pkt->pkt_scbp; 735 sensep = (uint8_t *)&arqstat->sts_sensedata; 736 key = scsi_sense_key(sensep); 737 asc = scsi_sense_asc(sensep); 738 ascq = scsi_sense_ascq(sensep); 739 740 /* 741 * Add to payload. 742 */ 743 err |= nvlist_add_uint8(pl, "key", key); 744 err |= nvlist_add_uint8(pl, "asc", asc); 745 err |= nvlist_add_uint8(pl, "ascq", ascq); 746 err |= nvlist_add_uint8_array(pl, "sense-data", 747 sensep, sizeof (arqstat->sts_sensedata)); 748 } else { 749 class = "cmd.disk.dev.serr"; 750 } 751 752 break; 753 754 case SCSI_TEST_CMPLT_OTHER: 755 dad = 1; 756 class = "cmd.disk.dev.serr"; 757 break; 758 759 case SCSI_TEST_CMD_INCOMPLETE: 760 case SCSI_TEST_NOTCMPLT: 761 case SCSI_TEST_TRAN_BUSY: 762 case SCSI_TEST_TRAN_REJECT: 763 class = "cmd.disk.tran"; 764 break; 765 } 766 767 /* 768 * Determine driver-assessment and add to payload. 769 */ 770 if (dad) { 771 /* 772 * While higher level software can retry the enumeration 773 * the belief is that any device-as-detector style error 774 * will be persistent and will survive retries. So we 775 * can make a local determination of driver assessment. 776 * Some day it may be more elegant to raise an ereport from 777 * scsi_tgtmap_scsi_deactivate to confirm retries failed, 778 * and correlate that ereport during diagnosis. 779 */ 780 if (stresult & tp->stp_fatalmask) 781 d_ass = (const char *)"fatal"; 782 else if (stresult & tp->stp_retrymask) 783 d_ass = (const char *)"retry"; 784 else 785 d_ass = (const char *)"retry"; 786 } else { 787 /* We do not diagnose transport errors (yet) */ 788 d_ass = (const char *)"retry"; 789 } 790 791 err |= nvlist_add_string(pl, "driver-assessment", d_ass); 792 793 /* 794 * If we're hoping for a device-as-detector style ereport then 795 * we're going to need a devid for the detector FMRI. We 796 * don't have the devid because the target won't talk to us. 797 * But we do know which hba iport we were probing out of, and 798 * we know the unit address that was being probed (but not 799 * what type of device is or should be there). So we 800 * search the devid cache for any cached devid matching 801 * path <iport-path>/<nodename>@<unit-address> with nodename 802 * wildcarded. If a match is made we are returned not only the 803 * devid but also the nodename for the path that cached that 804 * entry. 805 * 806 * We also attempt to dig up a devid even for transport errors; 807 * we'll include that in the payload but not in the detector FMRI. 808 */ 809 810 pathbuf = kmem_alloc(MAXPATHLEN, KM_SLEEP); 811 (void) ddi_pathname(hba, pathbuf); 812 813 if (e_devid_cache_path_to_devid(pathbuf, ua, nodenamebuf, 814 &devid) == DDI_SUCCESS) { 815 nodename = nodenamebuf; 816 devidstr = devidstr_buf = ddi_devid_str_encode(devid, NULL); 817 kmem_free(devid, ddi_devid_sizeof(devid)); 818 err |= nvlist_add_string(pl, "devid", devidstr); 819 } 820 821 /* 822 * If this is lun 0 we will include the target-port-l0id 823 * in the dev scheme detector for device-as-detector. 824 */ 825 if (dad && (lun == 0 || lun64 == 0)) 826 tpl0 = tgt_port; 827 828 /* Construct the devpath to use in the detector */ 829 (void) ddi_pathname(hba, pathbuf); 830 len = strlen(pathbuf); 831 (void) snprintf(pathbuf + len, MAXPATHLEN - len, "/%s@%s", 832 nodename ? nodename : "unknown", ua); 833 834 /* 835 * Let's review. 836 * 837 * Device-as-detector ereports for which the attempted lookup of 838 * devid and nodename succeeded: 839 * 840 * - pathbuf has the full device path including nodename we 841 * dug up from the devid cache 842 * 843 * - class is one of cmd.disk.{dev.rqs.derr,dev.serr} 844 * 845 * - devidstr is non NULL and a valid devid string 846 * 847 * Would-be device-as-detector ereport for which the attempted lookup 848 * of devid failed: 849 * 850 * - pathbuf has a device path with leaf nodename of "unknown" 851 * but still including the unit-address 852 * - class is one of cmd.disk.{dev.rqs.derr,dev.serr} 853 * 854 * Transport errors: 855 * 856 * class is cmd.disk.tran 857 * devidstr is NULL 858 * 859 * - we may have succeeded in looking up a devid and nodename - 860 * the devid we'll have added to the payload but we must not 861 * add to detector FMRI, and if we have have nodename then 862 * we have a full devpath otherwise one with "unknown" for 863 * nodename 864 */ 865 866 if (err) 867 (void) nvlist_add_boolean_value(pl, "payload-incomplete", 868 B_TRUE); 869 870 scsi_fm_ereport_post( 871 sd, 872 0, /* path_instance - always 0 */ 873 pathbuf, /* devpath for detector */ 874 class, /* ereport class suffix */ 875 0, /* ENA - generate for us */ 876 dad ? devidstr : NULL, /* dtcr devid, dev-as-det only */ 877 tpl0, /* target-port-l0id */ 878 DDI_SLEEP, 879 pl, /* preconstructed payload */ 880 FM_VERSION, DATA_TYPE_UINT8, FM_EREPORT_VERS0, 881 NULL); 882 883 nvlist_free(pl); 884 if (devidstr_buf) 885 ddi_devid_str_free(devidstr_buf); 886 kmem_free(pathbuf, MAXPATHLEN); 887 } 888 889 #ifdef DEBUG 890 /* 891 * Testing - fake scsi_test fails 892 */ 893 char scsi_test_fail_ua[SCSI_MAXNAMELEN]; /* unit address to object to */ 894 int scsi_test_fail_rc = TRAN_ACCEPT; /* scsi_transport return */ 895 uchar_t scsi_test_fail_pkt_reason = CMD_CMPLT; /* pkt_reason */ 896 uchar_t scsi_test_fail_status = STATUS_BUSY; /* status */ 897 uint_t scsi_test_fail_repeat = (uint_t)-1; /* number of times to fail ua */ 898 #endif 899 900 /* 901 * This is like scsi_poll, but only does retry for TRAN_BUSY. 902 */ 903 static uint32_t 904 scsi_test(struct scsi_pkt *pkt, enum scsi_test_ctxt ctxt) 905 { 906 uint32_t rval; 907 int wait_usec; 908 int rc; 909 extern int do_polled_io; 910 911 pkt->pkt_flags |= FLAG_NOINTR; 912 pkt->pkt_time = SCSI_POLL_TIMEOUT; /* in seconds */ 913 914 if (scsi_ifgetcap(&pkt->pkt_address, "tagged-qing", 1) == 1) { 915 pkt->pkt_flags |= FLAG_STAG; 916 } 917 918 /* 919 * Each TRAN_BUSY response waits scsi_test_busy_delay usec up to a 920 * maximum of scsi_test_busy_timeout. 921 */ 922 for (wait_usec = 0; (wait_usec / 1000000) <= scsi_test_busy_timeout; 923 wait_usec += scsi_test_busy_delay) { 924 925 /* Initialize pkt status variables */ 926 *pkt->pkt_scbp = pkt->pkt_reason = pkt->pkt_state = 0; 927 928 rc = scsi_transport(pkt); 929 if ((rc != TRAN_BUSY) || (scsi_test_busy_delay == 0) || 930 (scsi_test_busy_timeout == 0)) 931 break; 932 933 /* transport busy, wait */ 934 if ((curthread->t_flag & T_INTR_THREAD) == 0 && !do_polled_io) { 935 delay(drv_usectohz(scsi_test_busy_delay)); 936 } else { 937 /* we busy wait during cpr_dump or interrupt threads */ 938 drv_usecwait(scsi_test_busy_delay); 939 } 940 } 941 942 #ifdef DEBUG 943 if (scsi_test_fail_ua[0] != '\0' && scsi_test_fail_repeat > 0) { 944 struct scsi_address *ap = &pkt->pkt_address; 945 struct scsi_device *sd; 946 dev_info_t *probe; 947 char ua[SCSI_MAXNAMELEN]; 948 949 if ((sd = scsi_address_device(ap)) != NULL) { 950 probe = sd->sd_dev; 951 952 if (probe && scsi_ua_get(sd, ua, sizeof (ua)) && 953 strncmp(ua, scsi_test_fail_ua, sizeof (ua)) == 0) { 954 scsi_test_fail_repeat--; 955 rc = scsi_test_fail_rc; 956 if (rc == TRAN_ACCEPT) 957 pkt->pkt_reason = 958 scsi_test_fail_pkt_reason; 959 *pkt->pkt_scbp = scsi_test_fail_status; 960 if (scsi_test_fail_status == STATUS_CHECK) 961 pkt->pkt_state |= STATE_ARQ_DONE; 962 963 } 964 } 965 } 966 #endif 967 968 switch (rc) { 969 case TRAN_ACCEPT: 970 switch (pkt->pkt_reason) { 971 case CMD_CMPLT: 972 switch ((*pkt->pkt_scbp) & STATUS_MASK) { 973 case STATUS_GOOD: 974 rval = SCSI_TEST_CMPLT_GOOD; 975 break; 976 977 case STATUS_BUSY: 978 rval = SCSI_TEST_CMPLT_BUSY; 979 break; 980 981 case STATUS_CHECK: 982 rval = SCSI_TEST_CMPLT_CHECK; 983 break; 984 985 default: 986 rval = SCSI_TEST_CMPLT_OTHER; 987 break; 988 } 989 break; 990 991 case CMD_INCOMPLETE: 992 rval = SCSI_TEST_CMD_INCOMPLETE; 993 break; 994 995 default: 996 rval = SCSI_TEST_NOTCMPLT; 997 break; 998 } 999 break; 1000 1001 case TRAN_BUSY: 1002 rval = SCSI_TEST_TRAN_BUSY; 1003 break; 1004 1005 default: 1006 rval = SCSI_TEST_TRAN_REJECT; 1007 break; 1008 } 1009 1010 if (rval != SCSI_TEST_CMPLT_GOOD) 1011 scsi_test_ereport_post(pkt, ctxt, rval); 1012 1013 return (rval); 1014 } 1015 1016 /* 1017 * The implementation of scsi_probe now allows a particular 1018 * HBA to intercept the call, for any post- or pre-processing 1019 * it may need. The default, if the HBA does not override it, 1020 * is to call scsi_hba_probe(), which retains the old functionality 1021 * intact. 1022 */ 1023 int 1024 scsi_probe(struct scsi_device *sd, int (*callback)()) 1025 { 1026 int ret, retry = 0; 1027 scsi_hba_tran_t *tran = sd->sd_address.a_hba_tran; 1028 1029 if (scsi_check_ss2_LUN_limit(sd) != 0) { 1030 /* 1031 * caller is trying to probe a strictly-SCSI-2 device 1032 * with a LUN that is too large, so do not allow it 1033 */ 1034 return (SCSIPROBE_NORESP); /* skip probing this one */ 1035 } 1036 again: 1037 if (tran->tran_tgt_probe != NULL) { 1038 ret = (*tran->tran_tgt_probe)(sd, callback); 1039 } else { 1040 ret = scsi_hba_probe(sd, callback); 1041 } 1042 1043 if ((ret != SCSIPROBE_EXISTS) && (retry == 0)) { 1044 if (scsi_reset(&sd->sd_address, RESET_LUN) != 1) { 1045 cmn_err(CE_WARN, "scsi_probe: scsi_reset failed"); 1046 } 1047 retry = 1; 1048 goto again; 1049 } 1050 1051 if (ret == SCSIPROBE_EXISTS) { 1052 create_inquiry_props(sd); 1053 /* is this a strictly-SCSI-2 node ?? */ 1054 scsi_establish_LUN_limit(sd); 1055 } 1056 1057 return (ret); 1058 } 1059 /* 1060 * probe scsi device using any available path 1061 * 1062 */ 1063 int 1064 scsi_hba_probe(struct scsi_device *sd, int (*callback)()) 1065 { 1066 return (scsi_hba_probe_pi(sd, callback, 0)); 1067 } 1068 1069 /* 1070 * probe scsi device using specific path 1071 * 1072 * scsi_hba_probe_pi does not do any test unit ready's which access the medium 1073 * and could cause busy or not ready conditions. 1074 * scsi_hba_probe_pi does 2 inquiries and a rqsense to clear unit attention 1075 * and to allow sync negotiation to take place 1076 * finally, scsi_hba_probe_pi does one more inquiry which should 1077 * reliably tell us what kind of target we have. 1078 * A scsi-2 compliant target should be able to return inquiry with 250ms 1079 * and we actually wait more than a second after reset. 1080 */ 1081 int 1082 scsi_hba_probe_pi(struct scsi_device *sd, int (*callback)(), int pi) 1083 { 1084 struct scsi_pkt *inq_pkt = NULL; 1085 struct scsi_pkt *rq_pkt = NULL; 1086 int rval = SCSIPROBE_NOMEM; 1087 struct buf *inq_bp = NULL; 1088 struct buf *rq_bp = NULL; 1089 int (*cb_flag)(); 1090 int pass = 1; 1091 uint32_t str; 1092 1093 if (sd->sd_inq == NULL) { 1094 sd->sd_inq = (struct scsi_inquiry *) 1095 kmem_alloc(SUN_INQSIZE, ((callback == SLEEP_FUNC) ? 1096 KM_SLEEP : KM_NOSLEEP)); 1097 if (sd->sd_inq == NULL) { 1098 goto out; 1099 } 1100 } 1101 1102 if (callback != SLEEP_FUNC && callback != NULL_FUNC) { 1103 cb_flag = NULL_FUNC; 1104 } else { 1105 cb_flag = callback; 1106 } 1107 inq_bp = scsi_alloc_consistent_buf(ROUTE, 1108 (struct buf *)NULL, SUN_INQSIZE, B_READ, cb_flag, NULL); 1109 if (inq_bp == NULL) { 1110 goto out; 1111 } 1112 1113 inq_pkt = scsi_init_pkt(ROUTE, (struct scsi_pkt *)NULL, 1114 inq_bp, CDB_GROUP0, sizeof (struct scsi_arq_status), 1115 0, PKT_CONSISTENT, callback, NULL); 1116 if (inq_pkt == NULL) { 1117 if (inq_bp->b_error == 0) 1118 rval = SCSIPROBE_NOMEM_CB; 1119 goto out; 1120 } 1121 ASSERT(inq_bp->b_error == 0); 1122 1123 (void) scsi_setup_cdb((union scsi_cdb *)inq_pkt->pkt_cdbp, 1124 SCMD_INQUIRY, 0, SUN_INQSIZE, 0); 1125 inq_pkt->pkt_flags = FLAG_NOINTR|FLAG_NOPARITY; 1126 1127 /* 1128 * set transport path 1129 */ 1130 if (pi && scsi_pkt_allocated_correctly(inq_pkt)) { 1131 inq_pkt->pkt_path_instance = pi; 1132 inq_pkt->pkt_flags |= FLAG_PKT_PATH_INSTANCE; 1133 } 1134 1135 /* 1136 * the first inquiry will tell us whether a target 1137 * responded 1138 * 1139 * The FILL_SCSI1_LUN below will find "ansi_ver != 1" on first pass 1140 * because of bzero initilization. If this assumption turns out to be 1141 * incorrect after we have real sd_inq data (for lun0) we will do a 1142 * second pass during which FILL_SCSI1_LUN will place lun in CDB. 1143 */ 1144 bzero((caddr_t)sd->sd_inq, SUN_INQSIZE); 1145 again: FILL_SCSI1_LUN(sd, inq_pkt); 1146 1147 str = scsi_test(inq_pkt, STC_PROBE_FIRST_INQ); 1148 if (SCSI_TEST_FAILURE(str)) { 1149 if (str == SCSI_TEST_CMD_INCOMPLETE) { 1150 rval = SCSIPROBE_NORESP; 1151 goto out; 1152 } 1153 1154 /* 1155 * Retry one more time for anything other than CMD_INCOMPLETE. 1156 */ 1157 str = scsi_test(inq_pkt, STC_PROBE_FIRST_INQ_RETRY); 1158 if (SCSI_TEST_FAILURE(str)) { 1159 rval = SCSIPROBE_FAILURE; 1160 goto out; 1161 } 1162 } 1163 1164 /* 1165 * Did the inquiry complete and transfer inquiry information, 1166 * perhaps after retry? 1167 */ 1168 if (str == SCSI_TEST_CMPLT_GOOD) 1169 goto done; 1170 1171 /* 1172 * We get here for SCSI_TEST_CMPLT_{BUSY,CHECK,OTHER}. We term 1173 * this "partial success" in that at least something is talking 1174 * to us. 1175 * 1176 * A second inquiry allows the host adapter to negotiate 1177 * synchronous transfer period and offset 1178 */ 1179 str = scsi_test(inq_pkt, STC_PROBE_PARTIAL_SUCCESS); 1180 if (SCSI_TEST_FAILURE(str)) { 1181 if (str == SCSI_TEST_CMD_INCOMPLETE) 1182 rval = SCSIPROBE_NORESP; 1183 else 1184 rval = SCSIPROBE_FAILURE; 1185 goto out; 1186 } 1187 1188 /* 1189 * If target is still busy, give up now. 1190 * XXX There's no interval between retries - scsi_test should 1191 * probably have a builtin retry on target busy. 1192 */ 1193 if (str == SCSI_TEST_CMPLT_BUSY) { 1194 rval = SCSIPROBE_BUSY; 1195 goto out; 1196 } 1197 1198 /* 1199 * At this point we are SCSI_TEST_CMPLT_GOOD, SCSI_TEST_CMPLT_CHECK 1200 * or SCSI_TEST_CMPLT_OTHER. 1201 * 1202 * Do a rqsense if there was a check condition and ARQ was not done 1203 */ 1204 if (str == SCSI_TEST_CMPLT_CHECK && 1205 (inq_pkt->pkt_state & STATE_ARQ_DONE) == 0) { 1206 /* 1207 * prepare rqsense packet 1208 * there is no real need for this because the 1209 * check condition should have been cleared by now. 1210 */ 1211 rq_bp = scsi_alloc_consistent_buf(ROUTE, (struct buf *)NULL, 1212 (uint_t)SENSE_LENGTH, B_READ, cb_flag, NULL); 1213 if (rq_bp == NULL) { 1214 goto out; 1215 } 1216 1217 rq_pkt = scsi_init_pkt(ROUTE, (struct scsi_pkt *)NULL, 1218 rq_bp, CDB_GROUP0, 1, 0, PKT_CONSISTENT, callback, NULL); 1219 1220 if (rq_pkt == NULL) { 1221 if (rq_bp->b_error == 0) 1222 rval = SCSIPROBE_NOMEM_CB; 1223 goto out; 1224 } 1225 ASSERT(rq_bp->b_error == 0); 1226 1227 (void) scsi_setup_cdb((union scsi_cdb *)rq_pkt-> 1228 pkt_cdbp, SCMD_REQUEST_SENSE, 0, SENSE_LENGTH, 0); 1229 FILL_SCSI1_LUN(sd, rq_pkt); 1230 rq_pkt->pkt_flags = FLAG_NOINTR|FLAG_NOPARITY; 1231 1232 /* 1233 * set transport path 1234 */ 1235 if (pi && scsi_pkt_allocated_correctly(rq_pkt)) { 1236 rq_pkt->pkt_path_instance = pi; 1237 rq_pkt->pkt_flags |= FLAG_PKT_PATH_INSTANCE; 1238 } 1239 1240 /* 1241 * The FILL_SCSI1_LUN above will find "inq_ansi != 1" 1242 * on first pass, see "again" comment above. 1243 * 1244 * The controller type is as yet unknown, so we 1245 * have to do a throwaway non-extended request sense, 1246 * and hope that that clears the check condition for 1247 * that unit until we can find out what kind of drive 1248 * it is. A non-extended request sense is specified 1249 * by stating that the sense block has 0 length, 1250 * which is taken to mean that it is four bytes in 1251 * length. 1252 */ 1253 if (SCSI_TEST_FAILURE(scsi_test(rq_pkt, STC_PROBE_RQSENSE1))) { 1254 rval = SCSIPROBE_FAILURE; 1255 goto out; 1256 } 1257 } 1258 1259 /* 1260 * At this point, we are guaranteed that something responded 1261 * to this scsi bus target id. We don't know yet what 1262 * kind of device it is, or even whether there really is 1263 * a logical unit attached (as some SCSI target controllers 1264 * lie about a unit being ready, e.g., the Emulex MD21). 1265 */ 1266 1267 str = scsi_test(inq_pkt, STC_PROBE_CHK_CLEARED); 1268 if (SCSI_TEST_FAILURE(str)) { 1269 rval = SCSIPROBE_FAILURE; 1270 goto out; 1271 } 1272 1273 if (str == SCSI_TEST_CMPLT_BUSY) { 1274 rval = SCSIPROBE_BUSY; 1275 goto out; 1276 } 1277 1278 /* 1279 * Okay we sent the INQUIRY command. 1280 * 1281 * If enough data was transferred, we count that the 1282 * Inquiry command succeeded, else we have to assume 1283 * that this is a non-CCS scsi target (or a nonexistent 1284 * target/lun). 1285 */ 1286 1287 if (str == SCSI_TEST_CMPLT_CHECK) { 1288 /* 1289 * try a request sense if we have a pkt, otherwise 1290 * just retry the inquiry one more time 1291 */ 1292 if (rq_pkt) 1293 (void) scsi_test(rq_pkt, STC_PROBE_RQSENSE2); 1294 1295 /* 1296 * retry inquiry 1297 */ 1298 str = scsi_test(inq_pkt, STC_PROBE_INQ_FINAL); 1299 if (SCSI_TEST_FAILURE(str)) { 1300 rval = SCSIPROBE_FAILURE; 1301 goto out; 1302 } else if (str == SCSI_TEST_CMPLT_CHECK) { 1303 rval = SCSIPROBE_FAILURE; 1304 goto out; 1305 } 1306 } 1307 1308 done: 1309 /* 1310 * If we got a parity error on receive of inquiry data, 1311 * we're just plain out of luck because we told the host 1312 * adapter to not watch for parity errors. 1313 */ 1314 if ((inq_pkt->pkt_state & STATE_XFERRED_DATA) == 0 || 1315 ((SUN_INQSIZE - inq_pkt->pkt_resid) < SUN_MIN_INQLEN)) { 1316 rval = SCSIPROBE_NONCCS; 1317 } else { 1318 ASSERT(inq_pkt->pkt_resid >= 0); 1319 bcopy((caddr_t)inq_bp->b_un.b_addr, 1320 (caddr_t)sd->sd_inq, (SUN_INQSIZE - inq_pkt->pkt_resid)); 1321 rval = SCSIPROBE_EXISTS; 1322 } 1323 1324 out: 1325 /* 1326 * If lun > 0 we need to figure out if this is a scsi-1 device where 1327 * the "real" lun needs to be embedded into the cdb. 1328 */ 1329 if ((rval == SCSIPROBE_EXISTS) && (pass == 1) && 1330 (sd->sd_address.a_lun > 0) && (sd->sd_inq->inq_ansi == 0x1)) { 1331 pass++; 1332 if (sd->sd_address.a_lun <= 7) 1333 goto again; 1334 1335 /* 1336 * invalid lun for scsi-1, 1337 * return probe failure. 1338 */ 1339 rval = SCSIPROBE_FAILURE; 1340 } 1341 1342 if (rq_pkt) { 1343 scsi_destroy_pkt(rq_pkt); 1344 } 1345 if (inq_pkt) { 1346 scsi_destroy_pkt(inq_pkt); 1347 } 1348 if (rq_bp) { 1349 scsi_free_consistent_buf(rq_bp); 1350 } 1351 if (inq_bp) { 1352 scsi_free_consistent_buf(inq_bp); 1353 } 1354 return (rval); 1355 } 1356 1357 /* 1358 * Convert from a scsi_device structure pointer to a scsi_hba_tran structure 1359 * pointer. The correct way to do this is 1360 * 1361 * #define DEVP_TO_TRAN(sd) ((sd)->sd_address.a_hba_tran) 1362 * 1363 * however we have some consumers that place their own vector in a_hba_tran. To 1364 * avoid problems, we implement this using the sd_tran_safe. See 1365 * scsi_hba_initchild for more details. 1366 */ 1367 #define DEVP_TO_TRAN(sd) ((sd)->sd_tran_safe) 1368 1369 /* 1370 * Function, callable from SCSA framework, to get 'human' readable REPORTDEV 1371 * addressing information from scsi_device properties. 1372 */ 1373 int 1374 scsi_ua_get_reportdev(struct scsi_device *sd, char *ra, int len) 1375 { 1376 /* use deprecated tran_get_bus_addr interface if it is defined */ 1377 /* NOTE: tran_get_bus_addr is a poor name choice for interface */ 1378 if (DEVP_TO_TRAN(sd)->tran_get_bus_addr) 1379 return ((*DEVP_TO_TRAN(sd)->tran_get_bus_addr)(sd, ra, len)); 1380 return (scsi_hba_ua_get_reportdev(sd, ra, len)); 1381 } 1382 1383 /* 1384 * Function, callable from HBA driver's tran_get_bus_addr(9E) implementation, 1385 * to get standard form of human readable REPORTDEV addressing information 1386 * from scsi_device properties. 1387 */ 1388 int 1389 scsi_hba_ua_get_reportdev(struct scsi_device *sd, char *ra, int len) 1390 { 1391 int tgt, lun, sfunc; 1392 char *tgt_port; 1393 scsi_lun64_t lun64; 1394 1395 /* get device unit-address properties */ 1396 tgt = scsi_device_prop_get_int(sd, SCSI_DEVICE_PROP_PATH, 1397 SCSI_ADDR_PROP_TARGET, -1); 1398 if (scsi_device_prop_lookup_string(sd, SCSI_DEVICE_PROP_PATH, 1399 SCSI_ADDR_PROP_TARGET_PORT, &tgt_port) != DDI_PROP_SUCCESS) 1400 tgt_port = NULL; 1401 if ((tgt == -1) && (tgt_port == NULL)) 1402 return (0); /* no target */ 1403 1404 lun = scsi_device_prop_get_int(sd, SCSI_DEVICE_PROP_PATH, 1405 SCSI_ADDR_PROP_LUN, 0); 1406 lun64 = scsi_device_prop_get_int64(sd, SCSI_DEVICE_PROP_PATH, 1407 SCSI_ADDR_PROP_LUN64, lun); 1408 sfunc = scsi_device_prop_get_int(sd, SCSI_DEVICE_PROP_PATH, 1409 SCSI_ADDR_PROP_SFUNC, -1); 1410 1411 /* 1412 * XXX should the default be to print this in decimal for 1413 * "human readable" form, so it matches conf files? 1414 */ 1415 if (tgt_port) { 1416 if (sfunc == -1) 1417 (void) snprintf(ra, len, 1418 "%s %s lun %" PRIx64, 1419 SCSI_ADDR_PROP_TARGET_PORT, tgt_port, lun64); 1420 else 1421 (void) snprintf(ra, len, 1422 "%s %s lun %" PRIx64 " sfunc %x", 1423 SCSI_ADDR_PROP_TARGET_PORT, tgt_port, lun64, sfunc); 1424 scsi_device_prop_free(sd, SCSI_DEVICE_PROP_PATH, tgt_port); 1425 } else { 1426 if (sfunc == -1) 1427 (void) snprintf(ra, len, 1428 "%s %x lun %" PRIx64, 1429 SCSI_ADDR_PROP_TARGET, tgt, lun64); 1430 else 1431 (void) snprintf(ra, len, 1432 "%s %x lun %" PRIx64 " sfunc %x", 1433 SCSI_ADDR_PROP_TARGET, tgt, lun64, sfunc); 1434 } 1435 1436 return (1); 1437 } 1438 1439 /* 1440 * scsi_ua_get: using properties, return "unit-address" string. 1441 * Called by SCSA framework, may call HBAs tran function. 1442 */ 1443 int 1444 scsi_ua_get(struct scsi_device *sd, char *ua, int len) 1445 { 1446 char *eua; 1447 1448 /* See if we already have established the unit-address. */ 1449 if ((eua = scsi_device_unit_address(sd)) != NULL) { 1450 (void) strlcpy(ua, eua, len); 1451 return (1); 1452 } 1453 1454 /* Use deprecated tran_get_name interface if it is defined. */ 1455 /* NOTE: tran_get_name is a poor name choice for interface */ 1456 if (DEVP_TO_TRAN(sd)->tran_get_name) 1457 return ((*DEVP_TO_TRAN(sd)->tran_get_name)(sd, ua, len)); 1458 1459 /* Use generic property implementation */ 1460 return (scsi_hba_ua_get(sd, ua, len)); 1461 } 1462 1463 /* 1464 * scsi_hba_ua_get: using properties, return "unit-address" string. 1465 * This function may be called from an HBAs tran function. 1466 * 1467 * Function to get "unit-address" in "name@unit-address" /devices path 1468 * component form from the scsi_device unit-address properties on a node. 1469 * 1470 * NOTE: This function works in conjunction with scsi_hba_ua_set(). 1471 */ 1472 int 1473 scsi_hba_ua_get(struct scsi_device *sd, char *ua, int len) 1474 { 1475 int tgt, lun, sfunc; 1476 char *tgt_port; 1477 scsi_lun64_t lun64; 1478 1479 /* get device unit-address properties */ 1480 tgt = scsi_device_prop_get_int(sd, SCSI_DEVICE_PROP_PATH, 1481 SCSI_ADDR_PROP_TARGET, -1); 1482 if (scsi_device_prop_lookup_string(sd, SCSI_DEVICE_PROP_PATH, 1483 SCSI_ADDR_PROP_TARGET_PORT, &tgt_port) != DDI_PROP_SUCCESS) 1484 tgt_port = NULL; 1485 if ((tgt == -1) && (tgt_port == NULL)) 1486 return (0); /* no target */ 1487 1488 lun = scsi_device_prop_get_int(sd, SCSI_DEVICE_PROP_PATH, 1489 SCSI_ADDR_PROP_LUN, 0); 1490 lun64 = scsi_device_prop_get_int64(sd, SCSI_DEVICE_PROP_PATH, 1491 SCSI_ADDR_PROP_LUN64, lun); 1492 sfunc = scsi_device_prop_get_int(sd, SCSI_DEVICE_PROP_PATH, 1493 SCSI_ADDR_PROP_SFUNC, -1); 1494 if (tgt_port) { 1495 if (sfunc == -1) 1496 (void) snprintf(ua, len, "%s,%" PRIx64, 1497 tgt_port, lun64); 1498 else 1499 (void) snprintf(ua, len, "%s,%" PRIx64 ",%x", 1500 tgt_port, lun64, sfunc); 1501 scsi_device_prop_free(sd, SCSI_DEVICE_PROP_PATH, tgt_port); 1502 } else { 1503 if (sfunc == -1) 1504 (void) snprintf(ua, len, "%x,%" PRIx64, tgt, lun64); 1505 else 1506 (void) snprintf(ua, len, "%x,%" PRIx64 ",%x", 1507 tgt, lun64, sfunc); 1508 } 1509 return (1); 1510 } 1511 1512 static void 1513 create_inquiry_props(struct scsi_device *sd) 1514 { 1515 struct scsi_inquiry *inq = sd->sd_inq; 1516 1517 (void) ndi_prop_update_int(DDI_DEV_T_NONE, sd->sd_dev, 1518 INQUIRY_DEVICE_TYPE, (int)inq->inq_dtype); 1519 1520 /* 1521 * Create the following properties: 1522 * 1523 * inquiry-vendor-id Vendor id (INQUIRY data bytes 8-15) 1524 * inquiry-product-id Product id (INQUIRY data bytes 16-31) 1525 * inquiry-revision-id Product Rev level (INQUIRY data bytes 32-35) 1526 * 1527 * NOTE: We don't support creation of these properties for scsi-1 1528 * devices (as the vid, pid and revision were not defined) and we 1529 * don't create the property if they are of zero length when 1530 * stripped of Nulls and spaces. 1531 * 1532 * NOTE: The first definition of these properties sticks. This gives 1533 * a transport the ability to provide a higher-quality definition 1534 * than the standard SCSI INQUIRY data. 1535 */ 1536 if (inq->inq_ansi != 1) { 1537 if (ddi_prop_exists(DDI_DEV_T_NONE, sd->sd_dev, 1538 DDI_PROP_TYPE_STRING, INQUIRY_VENDOR_ID) == 0) 1539 (void) scsi_device_prop_update_inqstring(sd, 1540 INQUIRY_VENDOR_ID, 1541 inq->inq_vid, sizeof (inq->inq_vid)); 1542 1543 if (ddi_prop_exists(DDI_DEV_T_NONE, sd->sd_dev, 1544 DDI_PROP_TYPE_STRING, INQUIRY_PRODUCT_ID) == 0) 1545 (void) scsi_device_prop_update_inqstring(sd, 1546 INQUIRY_PRODUCT_ID, 1547 inq->inq_pid, sizeof (inq->inq_pid)); 1548 1549 if (ddi_prop_exists(DDI_DEV_T_NONE, sd->sd_dev, 1550 DDI_PROP_TYPE_STRING, INQUIRY_REVISION_ID) == 0) 1551 (void) scsi_device_prop_update_inqstring(sd, 1552 INQUIRY_REVISION_ID, 1553 inq->inq_revision, sizeof (inq->inq_revision)); 1554 } 1555 } 1556 1557 /* 1558 * Create 'inquiry' string properties. An 'inquiry' string gets special 1559 * treatment to trim trailing blanks (etc) and ensure null termination. 1560 */ 1561 int 1562 scsi_device_prop_update_inqstring(struct scsi_device *sd, 1563 char *name, char *data, size_t len) 1564 { 1565 int ilen; 1566 char *data_string; 1567 int rv; 1568 1569 ilen = scsi_ascii_inquiry_len(data, len); 1570 ASSERT(ilen <= (int)len); 1571 if (ilen <= 0) 1572 return (DDI_PROP_INVAL_ARG); 1573 1574 /* ensure null termination */ 1575 data_string = kmem_zalloc(ilen + 1, KM_SLEEP); 1576 bcopy(data, data_string, ilen); 1577 rv = ndi_prop_update_string(DDI_DEV_T_NONE, 1578 sd->sd_dev, name, data_string); 1579 kmem_free(data_string, ilen + 1); 1580 return (rv); 1581 } 1582 1583 /* 1584 * Interfaces associated with SCSI_HBA_ADDR_COMPLEX 1585 * per-scsi_device HBA private data support. 1586 * 1587 * scsi_address_device returns NULL if we're not SCSI_HBA_ADDR_COMPLEX, 1588 * thereby allowing use of scsi_address_device as a test for 1589 * SCSI_HBA_ADDR_COMPLEX. 1590 */ 1591 struct scsi_device * 1592 scsi_address_device(struct scsi_address *sa) 1593 { 1594 return ((sa->a_hba_tran->tran_hba_flags & SCSI_HBA_ADDR_COMPLEX) ? 1595 sa->a.a_sd : NULL); 1596 } 1597 1598 void 1599 scsi_device_hba_private_set(struct scsi_device *sd, void *data) 1600 { 1601 ASSERT(sd->sd_address.a_hba_tran->tran_hba_flags & 1602 SCSI_HBA_ADDR_COMPLEX); 1603 sd->sd_hba_private = data; 1604 } 1605 1606 void * 1607 scsi_device_hba_private_get(struct scsi_device *sd) 1608 { 1609 ASSERT(sd->sd_address.a_hba_tran->tran_hba_flags & 1610 SCSI_HBA_ADDR_COMPLEX); 1611 return (sd->sd_hba_private); 1612 } 1613 1614 /* 1615 * This routine is called from the start of scsi_probe() if a tgt/LUN to be 1616 * probed *may* be a request to probe a strictly SCSI-2 target (with respect 1617 * to LUNs) -- and this probe may be for a LUN number greater than 7, 1618 * which can cause a hardware hang 1619 * 1620 * return 0 if the probe can proceed, 1621 * else return 1, meaning do *NOT* probe this target/LUN 1622 */ 1623 static int 1624 scsi_check_ss2_LUN_limit(struct scsi_device *sd) 1625 { 1626 struct scsi_address *ap = &(sd->sd_address); 1627 dev_info_t *pdevi = 1628 (dev_info_t *)DEVI(sd->sd_dev)->devi_parent; 1629 int ret_val = 0; /* default return value */ 1630 uchar_t *tgt_list; 1631 uint_t tgt_nelements; 1632 int i; 1633 1634 1635 /* 1636 * check for what *might* be a problem probe, only we don't 1637 * know yet what's really at the destination target/LUN 1638 */ 1639 if ((ap->a_target >= NTARGETS_WIDE) || 1640 (ap->a_lun < NLUNS_PER_TARGET)) { 1641 return (0); /* okay to probe this target */ 1642 } 1643 1644 /* 1645 * this *might* be a problematic probe, so look to see 1646 * if the inquiry data matches 1647 */ 1648 SCSI_PROBE_DEBUG2(1, "SCSA pre-probe: checking tgt.LUN=%d.%d\n", 1649 ap->a_target, ap->a_lun); 1650 SCSI_PROBE_DEBUG1(2, 1651 "SCSA pre-probe: scanning parent node name: %s ...\n", 1652 ddi_node_name(pdevi)); 1653 1654 /* 1655 * look for a special property of our parent node that lists 1656 * the targets under it for which we do *NOT* want to probe 1657 * if LUN>7 -- if the property is found, look to see if our 1658 * target ID is on that list 1659 */ 1660 if (ddi_prop_lookup_byte_array(DDI_DEV_T_ANY, pdevi, 1661 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, SS2_LUN0_TGT_LIST_PROP, 1662 &tgt_list, &tgt_nelements) != DDI_PROP_SUCCESS) { 1663 /* 1664 * no list, so it must be okay to probe this target.LUN 1665 */ 1666 SCSI_PROBE_DEBUG0(3, 1667 "SCSA pre-probe: NO parent prop found\n"); 1668 } else { 1669 for (i = 0; i < tgt_nelements; i++) { 1670 if (tgt_list[i] == ap->a_target) { 1671 /* 1672 * we found a match, which means we do *NOT* 1673 * want to probe the specified target.LUN 1674 */ 1675 ret_val = 1; 1676 break; 1677 } 1678 } 1679 ddi_prop_free(tgt_list); 1680 #ifdef DEBUG 1681 if (ret_val == 1) { 1682 SCSI_PROBE_DEBUG2(1, 1683 "SCSA pre-probe: marker node FOUND for " 1684 "tgt.LUN=%d.%d, so SKIPPING it\n", 1685 ap->a_target, ap->a_lun); 1686 } else { 1687 SCSI_PROBE_DEBUG0(2, 1688 "SCSA pre-probe: NO marker node found" 1689 " -- OK to probe\n"); 1690 } 1691 #endif 1692 } 1693 return (ret_val); 1694 } 1695 1696 1697 /* 1698 * this routine is called from near the end of scsi_probe(), 1699 * to see if the just-probed node is on our list of strictly-SCSI-2 nodes, 1700 * and if it is we mark our parent node with this information 1701 */ 1702 static void 1703 scsi_establish_LUN_limit(struct scsi_device *sd) 1704 { 1705 struct scsi_address *ap = &(sd->sd_address); 1706 struct scsi_inquiry *inq = sd->sd_inq; 1707 dev_info_t *devi = sd->sd_dev; 1708 char *vid = NULL; 1709 char *pid = NULL; 1710 char *rev = NULL; 1711 int i; 1712 const ss2_lun0_info_t *p; 1713 int bad_target_found = 0; 1714 1715 1716 /* 1717 * if this inquiry data shows that we have a strictly-SCSI-2 device 1718 * at LUN 0, then add it to our list of strictly-SCSI-2 devices, 1719 * so that we can avoid probes where LUN>7 on this device later 1720 */ 1721 if ((ap->a_lun != 0) || 1722 (ap->a_target >= NTARGETS_WIDE) || 1723 (inq->inq_dtype != DTYPE_PROCESSOR) || 1724 (inq->inq_ansi != 2)) { 1725 /* 1726 * this can't possibly be a node we want to look at, since 1727 * either LUN is greater than 0, target is greater than or 1728 * equal to 16, device type 1729 * is not processor, or SCSI level is not SCSI-2, 1730 * so don't bother checking for a strictly SCSI-2 1731 * (only 8 LUN) target 1732 */ 1733 return; /* don't care */ 1734 } 1735 1736 SCSI_PROBE_DEBUG2(1, "SCSA post-probe: LUN limit on tgt.LUN=%d.%d, " 1737 "SCSI-2 PROCESSOR?\n", ap->a_target, ap->a_lun); 1738 1739 ASSERT(devi != NULL); 1740 1741 /* 1742 * we have a node that has been probed that is: LUN=0, target<16, 1743 * PROCESSOR-type SCSI target, and at the SCSI-2 level, so 1744 * check INQ properties to see if it's in our list of strictly 1745 * SCSI-2 targets 1746 * 1747 * first we have to get the VID/PID/REV INQUIRY properties for 1748 * comparison 1749 */ 1750 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, devi, 1751 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1752 INQUIRY_VENDOR_ID, &vid) != DDI_PROP_SUCCESS) { 1753 SCSI_PROBE_DEBUG1(2, "SCSA post-probe: prop \"%s\" missing\n", 1754 INQUIRY_VENDOR_ID); 1755 goto dun; 1756 } 1757 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, devi, 1758 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1759 INQUIRY_PRODUCT_ID, &pid) != DDI_PROP_SUCCESS) { 1760 SCSI_PROBE_DEBUG1(2, "SCSA post-probe: prop \"%s\" missing\n", 1761 INQUIRY_PRODUCT_ID); 1762 goto dun; 1763 } 1764 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, devi, 1765 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1766 INQUIRY_REVISION_ID, &rev) != DDI_PROP_SUCCESS) { 1767 SCSI_PROBE_DEBUG1(2, "SCSA post-probe: prop \"%s\" missing\n", 1768 INQUIRY_REVISION_ID); 1769 goto dun; 1770 } 1771 1772 SCSI_PROBE_DEBUG3(3, "SCSA post-probe: looking for vid/pid/rev = " 1773 "\"%s\"/\"%s\"/\"%s\"\n", vid, pid, rev); 1774 1775 /* 1776 * now that we have the INQUIRY properties from the device node, 1777 * compare them with our known offenders 1778 * 1779 * Note: comparison is *CASE* *SENSITIVE* 1780 */ 1781 for (i = 0; i < scsi_probe_strict_s2_size; i++) { 1782 p = &scsi_probe_strict_s2_list[i]; 1783 1784 if ((strcmp(p->sli_vid, vid) == 0) && 1785 (strcmp(p->sli_pid, pid) == 0) && 1786 (strcmp(p->sli_rev, rev) == 0)) { 1787 /* 1788 * we found a match -- do NOT want to probe this one 1789 */ 1790 SCSI_PROBE_DEBUG3(1, 1791 "SCSA post-probe: recording strict SCSI-2 node " 1792 "vid/pid/rev = \"%s\"/\"%s\"/\"%s\"\n", 1793 vid, pid, rev); 1794 1795 /* 1796 * set/update private parent-node property, 1797 * so we can find out about this node later 1798 */ 1799 bad_target_found = 1; 1800 break; 1801 } 1802 } 1803 1804 /* 1805 * either add remove target number from parent property 1806 */ 1807 scsi_update_parent_ss2_prop(devi, ap->a_target, bad_target_found); 1808 1809 dun: 1810 if (vid != NULL) { 1811 ddi_prop_free(vid); 1812 } 1813 if (pid != NULL) { 1814 ddi_prop_free(pid); 1815 } 1816 if (rev != NULL) { 1817 ddi_prop_free(rev); 1818 } 1819 } 1820 1821 1822 /* 1823 * update the parent node to add in the supplied tgt number to the target 1824 * list property already present (if any) 1825 * 1826 * since the target list can never be longer than 16, and each target 1827 * number is also small, we can save having to alloc memory by putting 1828 * a 16-byte array on the stack and using it for property memory 1829 * 1830 * if "add_tgt" is set then add the target to the parent's property, else 1831 * remove it (if present) 1832 */ 1833 static void 1834 scsi_update_parent_ss2_prop(dev_info_t *devi, int tgt, int add_tgt) 1835 { 1836 dev_info_t *pdevi = (dev_info_t *)DEVI(devi)->devi_parent; 1837 uchar_t *tgt_list; 1838 uint_t nelements; 1839 uint_t new_nelements; 1840 int i; 1841 int update_result; 1842 uchar_t new_tgt_list[NTARGETS_WIDE]; 1843 1844 1845 ASSERT(pdevi != NULL); 1846 1847 SCSI_PROBE_DEBUG3(3, 1848 "SCSA post-probe: updating parent=%s property to %s tgt=%d\n", 1849 ddi_node_name(pdevi), add_tgt ? "add" : "remove", tgt); 1850 1851 if (ddi_prop_lookup_byte_array(DDI_DEV_T_ANY, pdevi, 1852 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1853 SS2_LUN0_TGT_LIST_PROP, &tgt_list, &nelements) == 1854 DDI_PROP_SUCCESS) { 1855 1856 if (add_tgt) { 1857 /* 1858 * we found an existing property -- we might need 1859 * to add to it 1860 */ 1861 for (i = 0; i < nelements; i++) { 1862 if (tgt_list[i] == tgt) { 1863 /* target already in list */ 1864 SCSI_PROBE_DEBUG1(2, "SCSA post-probe:" 1865 " tgt %d already listed\n", tgt); 1866 ddi_prop_free(tgt_list); 1867 return; 1868 } 1869 } 1870 1871 /* 1872 * need to append our target number to end of list 1873 * (no need sorting list, as it's so short) 1874 */ 1875 1876 /* 1877 * will this new entry fit ?? -- it should, since 1878 * the array is 16-wide and only keep track of 1879 * 16 targets, but check just in case 1880 */ 1881 new_nelements = nelements + 1; 1882 if (new_nelements >= NTARGETS_WIDE) { 1883 SCSI_PROBE_DEBUG0(1, "SCSA post-probe: " 1884 "internal error: no room " 1885 "for more targets?\n"); 1886 ddi_prop_free(tgt_list); 1887 return; 1888 } 1889 1890 /* copy existing list then add our tgt number to end */ 1891 bcopy((void *)tgt_list, (void *)new_tgt_list, 1892 sizeof (uchar_t) * nelements); 1893 new_tgt_list[new_nelements - 1] = (uchar_t)tgt; 1894 } else { 1895 /* 1896 * we need to remove our target number from the list, 1897 * so copy all of the other target numbers, 1898 * skipping ours 1899 */ 1900 int tgt_removed = 0; 1901 1902 new_nelements = 0; 1903 for (i = 0; i < nelements; i++) { 1904 if (tgt_list[i] != tgt) { 1905 new_tgt_list[new_nelements++] = 1906 tgt_list[i]; 1907 } else { 1908 /* skip this target */ 1909 tgt_removed++; 1910 } 1911 } 1912 1913 if (!tgt_removed) { 1914 SCSI_PROBE_DEBUG1(2, "SCSA post-probe:" 1915 " no need to remove tgt %d\n", tgt); 1916 ddi_prop_free(tgt_list); 1917 return; 1918 } 1919 } 1920 1921 update_result = ddi_prop_update_byte_array(DDI_DEV_T_NONE, 1922 pdevi, SS2_LUN0_TGT_LIST_PROP, new_tgt_list, 1923 new_nelements); 1924 1925 ddi_prop_free(tgt_list); 1926 } else { 1927 /* 1928 * no property yet 1929 */ 1930 if (add_tgt) { 1931 /* 1932 * create a property with just our tgt 1933 */ 1934 new_tgt_list[0] = (uchar_t)tgt; 1935 new_nelements = 1; /* just one element */ 1936 1937 update_result = ddi_prop_update_byte_array( 1938 DDI_DEV_T_NONE, pdevi, SS2_LUN0_TGT_LIST_PROP, 1939 new_tgt_list, new_nelements); 1940 } else { 1941 /* 1942 * no list so no need to remove tgt from that list 1943 */ 1944 return; 1945 } 1946 } 1947 1948 #ifdef DEBUG 1949 /* 1950 * if we get here we have tried to add/update properties 1951 */ 1952 if (update_result != DDI_PROP_SUCCESS) { 1953 SCSI_PROBE_DEBUG2(1, "SCSA post-probe: can't update parent " 1954 "property with tgt=%d (%d)\n", tgt, update_result); 1955 } else { 1956 if (add_tgt) { 1957 SCSI_PROBE_DEBUG3(2, 1958 "SCSA post-probe: added tgt=%d to parent " 1959 "prop=\"%s\" (now %d entries)\n", 1960 tgt, SS2_LUN0_TGT_LIST_PROP, new_nelements); 1961 } else { 1962 SCSI_PROBE_DEBUG3(2, 1963 "SCSA post-probe: removed tgt=%d from parent " 1964 "prop=\"%s\" (now %d entries)\n", 1965 tgt, SS2_LUN0_TGT_LIST_PROP, new_nelements); 1966 } 1967 } 1968 #endif 1969 } 1970 1971 1972 /* XXX BEGIN: find a better place for this: inquiry.h? */ 1973 /* 1974 * Definitions used by device id registration routines 1975 */ 1976 #define VPD_HEAD_OFFSET 3 /* size of head for vpd page */ 1977 #define VPD_PAGE_LENGTH 3 /* offset for pge length data */ 1978 #define VPD_MODE_PAGE 1 /* offset into vpd pg for "page code" */ 1979 1980 /* size for devid inquiries */ 1981 #define MAX_INQUIRY_SIZE 0xF0 1982 #define MAX_INQUIRY_SIZE_EVPD 0xFF /* XXX why is this longer */ 1983 /* XXX END: find a better place for these */ 1984 1985 1986 /* 1987 * Decorate devinfo node with identity properties using information obtained 1988 * from device. These properties are used by device enumeration code to derive 1989 * the devid, and guid for the device. These properties are also used to 1990 * determine if a device should be enumerated under the physical HBA (PHCI) or 1991 * the virtual HBA (VHCI, for mpxio support). 1992 * 1993 * Return zero on success. If commands that should succeed fail or allocations 1994 * fail then return failure (non-zero). It is possible for this function to 1995 * return success and not have decorated the node with any additional identity 1996 * information if the device correctly responds indicating that they are not 1997 * supported. When failure occurs the caller should consider not making the 1998 * device accessible. 1999 */ 2000 int 2001 scsi_device_identity(struct scsi_device *sd, int (*callback)()) 2002 { 2003 dev_info_t *devi = sd->sd_dev; 2004 uchar_t *inq80 = NULL; 2005 uchar_t *inq83 = NULL; 2006 int rval; 2007 size_t len; 2008 int pg80, pg83; 2009 2010 /* find out what pages are supported by device */ 2011 if (check_vpd_page_support8083(sd, callback, &pg80, &pg83) == -1) 2012 return (-1); 2013 2014 /* if available, collect page 80 data and add as property */ 2015 if (pg80) { 2016 inq80 = kmem_zalloc(MAX_INQUIRY_SIZE, 2017 ((callback == SLEEP_FUNC) ? KM_SLEEP : KM_NOSLEEP)); 2018 if (inq80 == NULL) { 2019 rval = -1; 2020 goto out; 2021 } 2022 2023 rval = send_scsi_INQUIRY(sd, callback, inq80, 2024 MAX_INQUIRY_SIZE, 0x01, 0x80, &len, STC_IDENTITY_PG80); 2025 if (rval) 2026 goto out; /* should have worked */ 2027 2028 if (len && (ndi_prop_update_byte_array(DDI_DEV_T_NONE, devi, 2029 "inquiry-page-80", inq80, len) != DDI_PROP_SUCCESS)) { 2030 cmn_err(CE_WARN, "scsi_device_identity: " 2031 "failed to add page80 prop"); 2032 rval = -1; 2033 goto out; 2034 } 2035 } 2036 2037 /* if available, collect page 83 data and add as property */ 2038 if (pg83) { 2039 inq83 = kmem_zalloc(MAX_INQUIRY_SIZE, 2040 ((callback == SLEEP_FUNC) ? KM_SLEEP : KM_NOSLEEP)); 2041 if (inq83 == NULL) { 2042 rval = -1; 2043 goto out; 2044 } 2045 2046 rval = send_scsi_INQUIRY(sd, callback, inq83, 2047 MAX_INQUIRY_SIZE, 0x01, 0x83, &len, STC_IDENTITY_PG83); 2048 if (rval) 2049 goto out; /* should have worked */ 2050 2051 if (len && (ndi_prop_update_byte_array(DDI_DEV_T_NONE, devi, 2052 "inquiry-page-83", inq83, len) != DDI_PROP_SUCCESS)) { 2053 cmn_err(CE_WARN, "scsi_device_identity: " 2054 "failed to add page83 prop"); 2055 rval = -1; 2056 goto out; 2057 } 2058 } 2059 2060 /* Commands worked, identity information that exists has been added. */ 2061 rval = 0; 2062 2063 /* clean up resources */ 2064 out: if (inq80 != NULL) 2065 kmem_free(inq80, MAX_INQUIRY_SIZE); 2066 if (inq83 != NULL) 2067 kmem_free(inq83, MAX_INQUIRY_SIZE); 2068 2069 return (rval); 2070 } 2071 2072 /* 2073 * Send an INQUIRY command with the EVPD bit set and a page code of 0x00 to 2074 * the device, returning zero on success. Returned INQUIRY data is used to 2075 * determine which vital product pages are supported. The device idenity 2076 * information we are looking for is in pages 0x83 and/or 0x80. If the device 2077 * fails the EVPD inquiry then no pages are supported but the call succeeds. 2078 * Return -1 (failure) if there were memory allocation failures or if a 2079 * command faild that should have worked. 2080 */ 2081 static int 2082 check_vpd_page_support8083(struct scsi_device *sd, int (*callback)(), 2083 int *ppg80, int *ppg83) 2084 { 2085 uchar_t *page_list; 2086 int counter; 2087 int rval; 2088 2089 /* pages are not supported */ 2090 *ppg80 = 0; 2091 *ppg83 = 0; 2092 2093 /* 2094 * We'll set the page length to the maximum to save figuring it out 2095 * with an additional call. 2096 */ 2097 page_list = kmem_zalloc(MAX_INQUIRY_SIZE_EVPD, 2098 ((callback == SLEEP_FUNC) ? KM_SLEEP : KM_NOSLEEP)); 2099 if (page_list == NULL) 2100 return (-1); /* memory allocation problem */ 2101 2102 /* issue page 0 (Supported VPD Pages) INQUIRY with evpd set */ 2103 rval = send_scsi_INQUIRY(sd, callback, 2104 page_list, MAX_INQUIRY_SIZE_EVPD, 1, 0, NULL, STC_VPD_CHECK); 2105 2106 /* 2107 * Now we must validate that the device accepted the command (some 2108 * devices do not support it) and if the idenity pages we are 2109 * interested in are supported. 2110 */ 2111 if ((rval == 0) && 2112 (page_list[VPD_MODE_PAGE] == 0x00)) { 2113 /* Loop to find one of the 2 pages we need */ 2114 counter = 4; /* Supported pages start at byte 4, with 0x00 */ 2115 2116 /* 2117 * Pages are returned in ascending order, and 0x83 is the 2118 * last page we are hoping to find. 2119 */ 2120 while ((page_list[counter] <= 0x83) && 2121 (counter <= (page_list[VPD_PAGE_LENGTH] + 2122 VPD_HEAD_OFFSET))) { 2123 /* 2124 * Add 3 because page_list[3] is the number of 2125 * pages minus 3 2126 */ 2127 2128 switch (page_list[counter]) { 2129 case 0x80: 2130 *ppg80 = 1; 2131 break; 2132 case 0x83: 2133 *ppg83 = 1; 2134 break; 2135 } 2136 counter++; 2137 } 2138 } 2139 2140 kmem_free(page_list, MAX_INQUIRY_SIZE_EVPD); 2141 return (0); 2142 } 2143 2144 /* 2145 * Send INQUIRY command with specified EVPD and page code. Return 2146 * zero on success. On success, the amount of data transferred 2147 * is returned in *lenp. 2148 */ 2149 static int 2150 send_scsi_INQUIRY(struct scsi_device *sd, int (*callback)(), 2151 uchar_t *bufaddr, size_t buflen, 2152 uchar_t evpd, uchar_t page_code, size_t *lenp, 2153 enum scsi_test_ctxt ctxt) 2154 { 2155 int (*cb_flag)(); 2156 struct buf *inq_bp; 2157 struct scsi_pkt *inq_pkt = NULL; 2158 int rval = -1; 2159 2160 if (lenp) 2161 *lenp = 0; 2162 if (callback != SLEEP_FUNC && callback != NULL_FUNC) 2163 cb_flag = NULL_FUNC; 2164 else 2165 cb_flag = callback; 2166 inq_bp = scsi_alloc_consistent_buf(ROUTE, 2167 (struct buf *)NULL, buflen, B_READ, cb_flag, NULL); 2168 if (inq_bp == NULL) 2169 goto out; /* memory allocation problem */ 2170 2171 inq_pkt = scsi_init_pkt(ROUTE, (struct scsi_pkt *)NULL, 2172 inq_bp, CDB_GROUP0, sizeof (struct scsi_arq_status), 2173 0, PKT_CONSISTENT, callback, NULL); 2174 if (inq_pkt == NULL) 2175 goto out; /* memory allocation problem */ 2176 2177 ASSERT(inq_bp->b_error == 0); 2178 2179 /* form INQUIRY cdb with specified EVPD and page code */ 2180 (void) scsi_setup_cdb((union scsi_cdb *)inq_pkt->pkt_cdbp, 2181 SCMD_INQUIRY, 0, buflen, 0); 2182 inq_pkt->pkt_cdbp[1] = evpd; 2183 inq_pkt->pkt_cdbp[2] = page_code; 2184 2185 inq_pkt->pkt_time = SCSI_POLL_TIMEOUT; /* in seconds */ 2186 inq_pkt->pkt_flags = FLAG_NOINTR|FLAG_NOPARITY; 2187 2188 /* 2189 * Issue inquiry command thru scsi_test 2190 * 2191 * NOTE: This is important data about device identity, not sure why 2192 * NOPARITY is used. Also seems like we should check pkt_stat for 2193 * STATE_XFERRED_DATA. 2194 */ 2195 if (scsi_test(inq_pkt, ctxt) == SCSI_TEST_CMPLT_GOOD) { 2196 ASSERT(inq_pkt->pkt_resid >= 0); 2197 ASSERT(inq_pkt->pkt_resid <= buflen); 2198 2199 bcopy(inq_bp->b_un.b_addr, 2200 bufaddr, buflen - inq_pkt->pkt_resid); 2201 if (lenp) 2202 *lenp = (buflen - inq_pkt->pkt_resid); 2203 rval = 0; 2204 } 2205 2206 /* 2207 * XXX We should retry on target busy 2208 */ 2209 2210 out: if (inq_pkt) 2211 scsi_destroy_pkt(inq_pkt); 2212 if (inq_bp) 2213 scsi_free_consistent_buf(inq_bp); 2214 return (rval); 2215 } 2216