1 /*- 2 * Implementation of the SCSI Transport 3 * 4 * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs. 5 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification, immediately at the beginning of the file. 14 * 2. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/bus.h> 35 #include <sys/systm.h> 36 #include <sys/types.h> 37 #include <sys/malloc.h> 38 #include <sys/kernel.h> 39 #include <sys/time.h> 40 #include <sys/conf.h> 41 #include <sys/fcntl.h> 42 #include <sys/md5.h> 43 #include <sys/interrupt.h> 44 #include <sys/sbuf.h> 45 46 #include <sys/lock.h> 47 #include <sys/mutex.h> 48 #include <sys/sysctl.h> 49 50 #ifdef PC98 51 #include <pc98/pc98/pc98_machdep.h> /* geometry translation */ 52 #endif 53 54 #include <cam/cam.h> 55 #include <cam/cam_ccb.h> 56 #include <cam/cam_queue.h> 57 #include <cam/cam_periph.h> 58 #include <cam/cam_sim.h> 59 #include <cam/cam_xpt.h> 60 #include <cam/cam_xpt_sim.h> 61 #include <cam/cam_xpt_periph.h> 62 #include <cam/cam_xpt_internal.h> 63 #include <cam/cam_debug.h> 64 65 #include <cam/scsi/scsi_all.h> 66 #include <cam/scsi/scsi_message.h> 67 #include <cam/scsi/scsi_pass.h> 68 #include <machine/stdarg.h> /* for xpt_print below */ 69 #include "opt_cam.h" 70 71 struct scsi_quirk_entry { 72 struct scsi_inquiry_pattern inq_pat; 73 u_int8_t quirks; 74 #define CAM_QUIRK_NOLUNS 0x01 75 #define CAM_QUIRK_NOSERIAL 0x02 76 #define CAM_QUIRK_HILUNS 0x04 77 #define CAM_QUIRK_NOHILUNS 0x08 78 u_int mintags; 79 u_int maxtags; 80 }; 81 #define SCSI_QUIRK(dev) ((struct scsi_quirk_entry *)((dev)->quirk)) 82 83 static int cam_srch_hi = 0; 84 TUNABLE_INT("kern.cam.cam_srch_hi", &cam_srch_hi); 85 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS); 86 SYSCTL_PROC(_kern_cam, OID_AUTO, cam_srch_hi, CTLTYPE_INT|CTLFLAG_RW, 0, 0, 87 sysctl_cam_search_luns, "I", 88 "allow search above LUN 7 for SCSI3 and greater devices"); 89 90 #define CAM_SCSI2_MAXLUN 8 91 /* 92 * If we're not quirked to search <= the first 8 luns 93 * and we are either quirked to search above lun 8, 94 * or we're > SCSI-2 and we've enabled hilun searching, 95 * or we're > SCSI-2 and the last lun was a success, 96 * we can look for luns above lun 8. 97 */ 98 #define CAN_SRCH_HI_SPARSE(dv) \ 99 (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0) \ 100 && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS) \ 101 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi))) 102 103 #define CAN_SRCH_HI_DENSE(dv) \ 104 (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0) \ 105 && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS) \ 106 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2))) 107 108 static periph_init_t probe_periph_init; 109 110 static struct periph_driver probe_driver = 111 { 112 probe_periph_init, "probe", 113 TAILQ_HEAD_INITIALIZER(probe_driver.units), /* generation */ 0, 114 CAM_PERIPH_DRV_EARLY 115 }; 116 117 PERIPHDRIVER_DECLARE(probe, probe_driver); 118 119 typedef enum { 120 PROBE_TUR, 121 PROBE_INQUIRY, /* this counts as DV0 for Basic Domain Validation */ 122 PROBE_FULL_INQUIRY, 123 PROBE_MODE_SENSE, 124 PROBE_SERIAL_NUM_0, 125 PROBE_SERIAL_NUM_1, 126 PROBE_TUR_FOR_NEGOTIATION, 127 PROBE_INQUIRY_BASIC_DV1, 128 PROBE_INQUIRY_BASIC_DV2, 129 PROBE_DV_EXIT, 130 PROBE_INVALID 131 } probe_action; 132 133 static char *probe_action_text[] = { 134 "PROBE_TUR", 135 "PROBE_INQUIRY", 136 "PROBE_FULL_INQUIRY", 137 "PROBE_MODE_SENSE", 138 "PROBE_SERIAL_NUM_0", 139 "PROBE_SERIAL_NUM_1", 140 "PROBE_TUR_FOR_NEGOTIATION", 141 "PROBE_INQUIRY_BASIC_DV1", 142 "PROBE_INQUIRY_BASIC_DV2", 143 "PROBE_DV_EXIT", 144 "PROBE_INVALID" 145 }; 146 147 #define PROBE_SET_ACTION(softc, newaction) \ 148 do { \ 149 char **text; \ 150 text = probe_action_text; \ 151 CAM_DEBUG((softc)->periph->path, CAM_DEBUG_INFO, \ 152 ("Probe %s to %s\n", text[(softc)->action], \ 153 text[(newaction)])); \ 154 (softc)->action = (newaction); \ 155 } while(0) 156 157 typedef enum { 158 PROBE_INQUIRY_CKSUM = 0x01, 159 PROBE_SERIAL_CKSUM = 0x02, 160 PROBE_NO_ANNOUNCE = 0x04 161 } probe_flags; 162 163 typedef struct { 164 TAILQ_HEAD(, ccb_hdr) request_ccbs; 165 probe_action action; 166 union ccb saved_ccb; 167 probe_flags flags; 168 MD5_CTX context; 169 u_int8_t digest[16]; 170 struct cam_periph *periph; 171 } probe_softc; 172 173 static const char quantum[] = "QUANTUM"; 174 static const char sony[] = "SONY"; 175 static const char west_digital[] = "WDIGTL"; 176 static const char samsung[] = "SAMSUNG"; 177 static const char seagate[] = "SEAGATE"; 178 static const char microp[] = "MICROP"; 179 180 static struct scsi_quirk_entry scsi_quirk_table[] = 181 { 182 { 183 /* Reports QUEUE FULL for temporary resource shortages */ 184 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" }, 185 /*quirks*/0, /*mintags*/24, /*maxtags*/32 186 }, 187 { 188 /* Reports QUEUE FULL for temporary resource shortages */ 189 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" }, 190 /*quirks*/0, /*mintags*/24, /*maxtags*/32 191 }, 192 { 193 /* Reports QUEUE FULL for temporary resource shortages */ 194 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" }, 195 /*quirks*/0, /*mintags*/24, /*maxtags*/32 196 }, 197 { 198 /* Broken tagged queuing drive */ 199 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" }, 200 /*quirks*/0, /*mintags*/0, /*maxtags*/0 201 }, 202 { 203 /* Broken tagged queuing drive */ 204 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" }, 205 /*quirks*/0, /*mintags*/0, /*maxtags*/0 206 }, 207 { 208 /* Broken tagged queuing drive */ 209 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" }, 210 /*quirks*/0, /*mintags*/0, /*maxtags*/0 211 }, 212 { 213 /* 214 * Unfortunately, the Quantum Atlas III has the same 215 * problem as the Atlas II drives above. 216 * Reported by: "Johan Granlund" <johan@granlund.nu> 217 * 218 * For future reference, the drive with the problem was: 219 * QUANTUM QM39100TD-SW N1B0 220 * 221 * It's possible that Quantum will fix the problem in later 222 * firmware revisions. If that happens, the quirk entry 223 * will need to be made specific to the firmware revisions 224 * with the problem. 225 * 226 */ 227 /* Reports QUEUE FULL for temporary resource shortages */ 228 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" }, 229 /*quirks*/0, /*mintags*/24, /*maxtags*/32 230 }, 231 { 232 /* 233 * 18 Gig Atlas III, same problem as the 9G version. 234 * Reported by: Andre Albsmeier 235 * <andre.albsmeier@mchp.siemens.de> 236 * 237 * For future reference, the drive with the problem was: 238 * QUANTUM QM318000TD-S N491 239 */ 240 /* Reports QUEUE FULL for temporary resource shortages */ 241 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" }, 242 /*quirks*/0, /*mintags*/24, /*maxtags*/32 243 }, 244 { 245 /* 246 * Broken tagged queuing drive 247 * Reported by: Bret Ford <bford@uop.cs.uop.edu> 248 * and: Martin Renters <martin@tdc.on.ca> 249 */ 250 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" }, 251 /*quirks*/0, /*mintags*/0, /*maxtags*/0 252 }, 253 /* 254 * The Seagate Medalist Pro drives have very poor write 255 * performance with anything more than 2 tags. 256 * 257 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl> 258 * Drive: <SEAGATE ST36530N 1444> 259 * 260 * Reported by: Jeremy Lea <reg@shale.csir.co.za> 261 * Drive: <SEAGATE ST34520W 1281> 262 * 263 * No one has actually reported that the 9G version 264 * (ST39140*) of the Medalist Pro has the same problem, but 265 * we're assuming that it does because the 4G and 6.5G 266 * versions of the drive are broken. 267 */ 268 { 269 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"}, 270 /*quirks*/0, /*mintags*/2, /*maxtags*/2 271 }, 272 { 273 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"}, 274 /*quirks*/0, /*mintags*/2, /*maxtags*/2 275 }, 276 { 277 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"}, 278 /*quirks*/0, /*mintags*/2, /*maxtags*/2 279 }, 280 { 281 /* 282 * Slow when tagged queueing is enabled. Write performance 283 * steadily drops off with more and more concurrent 284 * transactions. Best sequential write performance with 285 * tagged queueing turned off and write caching turned on. 286 * 287 * PR: kern/10398 288 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp> 289 * Drive: DCAS-34330 w/ "S65A" firmware. 290 * 291 * The drive with the problem had the "S65A" firmware 292 * revision, and has also been reported (by Stephen J. 293 * Roznowski <sjr@home.net>) for a drive with the "S61A" 294 * firmware revision. 295 * 296 * Although no one has reported problems with the 2 gig 297 * version of the DCAS drive, the assumption is that it 298 * has the same problems as the 4 gig version. Therefore 299 * this quirk entries disables tagged queueing for all 300 * DCAS drives. 301 */ 302 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" }, 303 /*quirks*/0, /*mintags*/0, /*maxtags*/0 304 }, 305 { 306 /* Broken tagged queuing drive */ 307 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" }, 308 /*quirks*/0, /*mintags*/0, /*maxtags*/0 309 }, 310 { 311 /* Broken tagged queuing drive */ 312 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" }, 313 /*quirks*/0, /*mintags*/0, /*maxtags*/0 314 }, 315 { 316 /* This does not support other than LUN 0 */ 317 { T_DIRECT, SIP_MEDIA_FIXED, "VMware*", "*", "*" }, 318 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255 319 }, 320 { 321 /* 322 * Broken tagged queuing drive. 323 * Submitted by: 324 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp> 325 * in PR kern/9535 326 */ 327 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" }, 328 /*quirks*/0, /*mintags*/0, /*maxtags*/0 329 }, 330 { 331 /* 332 * Slow when tagged queueing is enabled. (1.5MB/sec versus 333 * 8MB/sec.) 334 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> 335 * Best performance with these drives is achieved with 336 * tagged queueing turned off, and write caching turned on. 337 */ 338 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" }, 339 /*quirks*/0, /*mintags*/0, /*maxtags*/0 340 }, 341 { 342 /* 343 * Slow when tagged queueing is enabled. (1.5MB/sec versus 344 * 8MB/sec.) 345 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> 346 * Best performance with these drives is achieved with 347 * tagged queueing turned off, and write caching turned on. 348 */ 349 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" }, 350 /*quirks*/0, /*mintags*/0, /*maxtags*/0 351 }, 352 { 353 /* 354 * Doesn't handle queue full condition correctly, 355 * so we need to limit maxtags to what the device 356 * can handle instead of determining this automatically. 357 */ 358 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" }, 359 /*quirks*/0, /*mintags*/2, /*maxtags*/32 360 }, 361 { 362 /* Really only one LUN */ 363 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" }, 364 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 365 }, 366 { 367 /* I can't believe we need a quirk for DPT volumes. */ 368 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" }, 369 CAM_QUIRK_NOLUNS, 370 /*mintags*/0, /*maxtags*/255 371 }, 372 { 373 /* 374 * Many Sony CDROM drives don't like multi-LUN probing. 375 */ 376 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" }, 377 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 378 }, 379 { 380 /* 381 * This drive doesn't like multiple LUN probing. 382 * Submitted by: Parag Patel <parag@cgt.com> 383 */ 384 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" }, 385 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 386 }, 387 { 388 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" }, 389 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 390 }, 391 { 392 /* 393 * The 8200 doesn't like multi-lun probing, and probably 394 * don't like serial number requests either. 395 */ 396 { 397 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE", 398 "EXB-8200*", "*" 399 }, 400 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 401 }, 402 { 403 /* 404 * Let's try the same as above, but for a drive that says 405 * it's an IPL-6860 but is actually an EXB 8200. 406 */ 407 { 408 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE", 409 "IPL-6860*", "*" 410 }, 411 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 412 }, 413 { 414 /* 415 * These Hitachi drives don't like multi-lun probing. 416 * The PR submitter has a DK319H, but says that the Linux 417 * kernel has a similar work-around for the DK312 and DK314, 418 * so all DK31* drives are quirked here. 419 * PR: misc/18793 420 * Submitted by: Paul Haddad <paul@pth.com> 421 */ 422 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" }, 423 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255 424 }, 425 { 426 /* 427 * The Hitachi CJ series with J8A8 firmware apparantly has 428 * problems with tagged commands. 429 * PR: 23536 430 * Reported by: amagai@nue.org 431 */ 432 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" }, 433 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 434 }, 435 { 436 /* 437 * These are the large storage arrays. 438 * Submitted by: William Carrel <william.carrel@infospace.com> 439 */ 440 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" }, 441 CAM_QUIRK_HILUNS, 2, 1024 442 }, 443 { 444 /* 445 * This old revision of the TDC3600 is also SCSI-1, and 446 * hangs upon serial number probing. 447 */ 448 { 449 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 450 " TDC 3600", "U07:" 451 }, 452 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0 453 }, 454 { 455 /* 456 * Would repond to all LUNs if asked for. 457 */ 458 { 459 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER", 460 "CP150", "*" 461 }, 462 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 463 }, 464 { 465 /* 466 * Would repond to all LUNs if asked for. 467 */ 468 { 469 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 470 "96X2*", "*" 471 }, 472 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 473 }, 474 { 475 /* Submitted by: Matthew Dodd <winter@jurai.net> */ 476 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" }, 477 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 478 }, 479 { 480 /* Submitted by: Matthew Dodd <winter@jurai.net> */ 481 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" }, 482 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 483 }, 484 { 485 /* TeraSolutions special settings for TRC-22 RAID */ 486 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" }, 487 /*quirks*/0, /*mintags*/55, /*maxtags*/255 488 }, 489 { 490 /* Veritas Storage Appliance */ 491 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" }, 492 CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024 493 }, 494 { 495 /* 496 * Would respond to all LUNs. Device type and removable 497 * flag are jumper-selectable. 498 */ 499 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix", 500 "Tahiti 1", "*" 501 }, 502 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 503 }, 504 { 505 /* EasyRAID E5A aka. areca ARC-6010 */ 506 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" }, 507 CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255 508 }, 509 { 510 { T_ENCLOSURE, SIP_MEDIA_FIXED, "DP", "BACKPLANE", "*" }, 511 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 512 }, 513 { 514 /* Default tagged queuing parameters for all devices */ 515 { 516 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, 517 /*vendor*/"*", /*product*/"*", /*revision*/"*" 518 }, 519 /*quirks*/0, /*mintags*/2, /*maxtags*/255 520 }, 521 }; 522 523 static const int scsi_quirk_table_size = 524 sizeof(scsi_quirk_table) / sizeof(*scsi_quirk_table); 525 526 static cam_status proberegister(struct cam_periph *periph, 527 void *arg); 528 static void probeschedule(struct cam_periph *probe_periph); 529 static void probestart(struct cam_periph *periph, union ccb *start_ccb); 530 static void proberequestdefaultnegotiation(struct cam_periph *periph); 531 static int proberequestbackoff(struct cam_periph *periph, 532 struct cam_ed *device); 533 static void probedone(struct cam_periph *periph, union ccb *done_ccb); 534 static void probecleanup(struct cam_periph *periph); 535 static void scsi_find_quirk(struct cam_ed *device); 536 static void scsi_scan_bus(struct cam_periph *periph, union ccb *ccb); 537 static void scsi_scan_lun(struct cam_periph *periph, 538 struct cam_path *path, cam_flags flags, 539 union ccb *ccb); 540 static void xptscandone(struct cam_periph *periph, union ccb *done_ccb); 541 static struct cam_ed * 542 scsi_alloc_device(struct cam_eb *bus, struct cam_et *target, 543 lun_id_t lun_id); 544 static void scsi_devise_transport(struct cam_path *path); 545 static void scsi_set_transfer_settings(struct ccb_trans_settings *cts, 546 struct cam_ed *device, 547 int async_update); 548 static void scsi_toggle_tags(struct cam_path *path); 549 static void scsi_dev_async(u_int32_t async_code, 550 struct cam_eb *bus, 551 struct cam_et *target, 552 struct cam_ed *device, 553 void *async_arg); 554 static void scsi_action(union ccb *start_ccb); 555 556 static struct xpt_xport scsi_xport = { 557 .alloc_device = scsi_alloc_device, 558 .action = scsi_action, 559 .async = scsi_dev_async, 560 }; 561 562 struct xpt_xport * 563 scsi_get_xport(void) 564 { 565 return (&scsi_xport); 566 } 567 568 static void 569 probe_periph_init() 570 { 571 } 572 573 static cam_status 574 proberegister(struct cam_periph *periph, void *arg) 575 { 576 union ccb *request_ccb; /* CCB representing the probe request */ 577 cam_status status; 578 probe_softc *softc; 579 580 request_ccb = (union ccb *)arg; 581 if (periph == NULL) { 582 printf("proberegister: periph was NULL!!\n"); 583 return(CAM_REQ_CMP_ERR); 584 } 585 586 if (request_ccb == NULL) { 587 printf("proberegister: no probe CCB, " 588 "can't register device\n"); 589 return(CAM_REQ_CMP_ERR); 590 } 591 592 softc = (probe_softc *)malloc(sizeof(*softc), M_CAMXPT, M_NOWAIT); 593 594 if (softc == NULL) { 595 printf("proberegister: Unable to probe new device. " 596 "Unable to allocate softc\n"); 597 return(CAM_REQ_CMP_ERR); 598 } 599 TAILQ_INIT(&softc->request_ccbs); 600 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h, 601 periph_links.tqe); 602 softc->flags = 0; 603 periph->softc = softc; 604 softc->periph = periph; 605 softc->action = PROBE_INVALID; 606 status = cam_periph_acquire(periph); 607 if (status != CAM_REQ_CMP) { 608 return (status); 609 } 610 611 612 /* 613 * Ensure we've waited at least a bus settle 614 * delay before attempting to probe the device. 615 * For HBAs that don't do bus resets, this won't make a difference. 616 */ 617 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset, 618 scsi_delay); 619 /* 620 * Ensure nobody slip in until probe finish. 621 */ 622 cam_freeze_devq_arg(periph->path, 623 RELSIM_RELEASE_RUNLEVEL, CAM_RL_XPT + 1); 624 probeschedule(periph); 625 return(CAM_REQ_CMP); 626 } 627 628 static void 629 probeschedule(struct cam_periph *periph) 630 { 631 struct ccb_pathinq cpi; 632 union ccb *ccb; 633 probe_softc *softc; 634 635 softc = (probe_softc *)periph->softc; 636 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs); 637 638 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE); 639 cpi.ccb_h.func_code = XPT_PATH_INQ; 640 xpt_action((union ccb *)&cpi); 641 642 /* 643 * If a device has gone away and another device, or the same one, 644 * is back in the same place, it should have a unit attention 645 * condition pending. It will not report the unit attention in 646 * response to an inquiry, which may leave invalid transfer 647 * negotiations in effect. The TUR will reveal the unit attention 648 * condition. Only send the TUR for lun 0, since some devices 649 * will get confused by commands other than inquiry to non-existent 650 * luns. If you think a device has gone away start your scan from 651 * lun 0. This will insure that any bogus transfer settings are 652 * invalidated. 653 * 654 * If we haven't seen the device before and the controller supports 655 * some kind of transfer negotiation, negotiate with the first 656 * sent command if no bus reset was performed at startup. This 657 * ensures that the device is not confused by transfer negotiation 658 * settings left over by loader or BIOS action. 659 */ 660 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0) 661 && (ccb->ccb_h.target_lun == 0)) { 662 PROBE_SET_ACTION(softc, PROBE_TUR); 663 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0 664 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) { 665 proberequestdefaultnegotiation(periph); 666 PROBE_SET_ACTION(softc, PROBE_INQUIRY); 667 } else { 668 PROBE_SET_ACTION(softc, PROBE_INQUIRY); 669 } 670 671 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE) 672 softc->flags |= PROBE_NO_ANNOUNCE; 673 else 674 softc->flags &= ~PROBE_NO_ANNOUNCE; 675 676 xpt_schedule(periph, CAM_PRIORITY_XPT); 677 } 678 679 static void 680 probestart(struct cam_periph *periph, union ccb *start_ccb) 681 { 682 /* Probe the device that our peripheral driver points to */ 683 struct ccb_scsiio *csio; 684 probe_softc *softc; 685 686 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n")); 687 688 softc = (probe_softc *)periph->softc; 689 csio = &start_ccb->csio; 690 691 switch (softc->action) { 692 case PROBE_TUR: 693 case PROBE_TUR_FOR_NEGOTIATION: 694 case PROBE_DV_EXIT: 695 { 696 scsi_test_unit_ready(csio, 697 /*retries*/10, 698 probedone, 699 MSG_SIMPLE_Q_TAG, 700 SSD_FULL_SIZE, 701 /*timeout*/60000); 702 break; 703 } 704 case PROBE_INQUIRY: 705 case PROBE_FULL_INQUIRY: 706 case PROBE_INQUIRY_BASIC_DV1: 707 case PROBE_INQUIRY_BASIC_DV2: 708 { 709 u_int inquiry_len; 710 struct scsi_inquiry_data *inq_buf; 711 712 inq_buf = &periph->path->device->inq_data; 713 714 /* 715 * If the device is currently configured, we calculate an 716 * MD5 checksum of the inquiry data, and if the serial number 717 * length is greater than 0, add the serial number data 718 * into the checksum as well. Once the inquiry and the 719 * serial number check finish, we attempt to figure out 720 * whether we still have the same device. 721 */ 722 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) { 723 724 MD5Init(&softc->context); 725 MD5Update(&softc->context, (unsigned char *)inq_buf, 726 sizeof(struct scsi_inquiry_data)); 727 softc->flags |= PROBE_INQUIRY_CKSUM; 728 if (periph->path->device->serial_num_len > 0) { 729 MD5Update(&softc->context, 730 periph->path->device->serial_num, 731 periph->path->device->serial_num_len); 732 softc->flags |= PROBE_SERIAL_CKSUM; 733 } 734 MD5Final(softc->digest, &softc->context); 735 } 736 737 if (softc->action == PROBE_INQUIRY) 738 inquiry_len = SHORT_INQUIRY_LENGTH; 739 else 740 inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf); 741 742 /* 743 * Some parallel SCSI devices fail to send an 744 * ignore wide residue message when dealing with 745 * odd length inquiry requests. Round up to be 746 * safe. 747 */ 748 inquiry_len = roundup2(inquiry_len, 2); 749 750 if (softc->action == PROBE_INQUIRY_BASIC_DV1 751 || softc->action == PROBE_INQUIRY_BASIC_DV2) { 752 inq_buf = malloc(inquiry_len, M_CAMXPT, M_NOWAIT); 753 } 754 if (inq_buf == NULL) { 755 xpt_print(periph->path, "malloc failure- skipping Basic" 756 "Domain Validation\n"); 757 PROBE_SET_ACTION(softc, PROBE_DV_EXIT); 758 scsi_test_unit_ready(csio, 759 /*retries*/4, 760 probedone, 761 MSG_SIMPLE_Q_TAG, 762 SSD_FULL_SIZE, 763 /*timeout*/60000); 764 break; 765 } 766 scsi_inquiry(csio, 767 /*retries*/4, 768 probedone, 769 MSG_SIMPLE_Q_TAG, 770 (u_int8_t *)inq_buf, 771 inquiry_len, 772 /*evpd*/FALSE, 773 /*page_code*/0, 774 SSD_MIN_SIZE, 775 /*timeout*/60 * 1000); 776 break; 777 } 778 case PROBE_MODE_SENSE: 779 { 780 void *mode_buf; 781 int mode_buf_len; 782 783 mode_buf_len = sizeof(struct scsi_mode_header_6) 784 + sizeof(struct scsi_mode_blk_desc) 785 + sizeof(struct scsi_control_page); 786 mode_buf = malloc(mode_buf_len, M_CAMXPT, M_NOWAIT); 787 if (mode_buf != NULL) { 788 scsi_mode_sense(csio, 789 /*retries*/4, 790 probedone, 791 MSG_SIMPLE_Q_TAG, 792 /*dbd*/FALSE, 793 SMS_PAGE_CTRL_CURRENT, 794 SMS_CONTROL_MODE_PAGE, 795 mode_buf, 796 mode_buf_len, 797 SSD_FULL_SIZE, 798 /*timeout*/60000); 799 break; 800 } 801 xpt_print(periph->path, "Unable to mode sense control page - " 802 "malloc failure\n"); 803 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM_0); 804 } 805 /* FALLTHROUGH */ 806 case PROBE_SERIAL_NUM_0: 807 { 808 struct scsi_vpd_supported_page_list *vpd_list = NULL; 809 struct cam_ed *device; 810 811 device = periph->path->device; 812 if ((SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOSERIAL) == 0) { 813 vpd_list = malloc(sizeof(*vpd_list), M_CAMXPT, 814 M_NOWAIT | M_ZERO); 815 } 816 817 if (vpd_list != NULL) { 818 scsi_inquiry(csio, 819 /*retries*/4, 820 probedone, 821 MSG_SIMPLE_Q_TAG, 822 (u_int8_t *)vpd_list, 823 sizeof(*vpd_list), 824 /*evpd*/TRUE, 825 SVPD_SUPPORTED_PAGE_LIST, 826 SSD_MIN_SIZE, 827 /*timeout*/60 * 1000); 828 break; 829 } 830 /* 831 * We'll have to do without, let our probedone 832 * routine finish up for us. 833 */ 834 start_ccb->csio.data_ptr = NULL; 835 probedone(periph, start_ccb); 836 return; 837 } 838 case PROBE_SERIAL_NUM_1: 839 { 840 struct scsi_vpd_unit_serial_number *serial_buf; 841 struct cam_ed* device; 842 843 serial_buf = NULL; 844 device = periph->path->device; 845 if (device->serial_num != NULL) { 846 free(device->serial_num, M_CAMXPT); 847 device->serial_num = NULL; 848 device->serial_num_len = 0; 849 } 850 851 serial_buf = (struct scsi_vpd_unit_serial_number *) 852 malloc(sizeof(*serial_buf), M_CAMXPT, M_NOWAIT|M_ZERO); 853 854 if (serial_buf != NULL) { 855 scsi_inquiry(csio, 856 /*retries*/4, 857 probedone, 858 MSG_SIMPLE_Q_TAG, 859 (u_int8_t *)serial_buf, 860 sizeof(*serial_buf), 861 /*evpd*/TRUE, 862 SVPD_UNIT_SERIAL_NUMBER, 863 SSD_MIN_SIZE, 864 /*timeout*/60 * 1000); 865 break; 866 } 867 /* 868 * We'll have to do without, let our probedone 869 * routine finish up for us. 870 */ 871 start_ccb->csio.data_ptr = NULL; 872 probedone(periph, start_ccb); 873 return; 874 } 875 case PROBE_INVALID: 876 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 877 ("probestart: invalid action state\n")); 878 default: 879 break; 880 } 881 xpt_action(start_ccb); 882 } 883 884 static void 885 proberequestdefaultnegotiation(struct cam_periph *periph) 886 { 887 struct ccb_trans_settings cts; 888 889 xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE); 890 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 891 cts.type = CTS_TYPE_USER_SETTINGS; 892 xpt_action((union ccb *)&cts); 893 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 894 return; 895 } 896 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS; 897 cts.type = CTS_TYPE_CURRENT_SETTINGS; 898 xpt_action((union ccb *)&cts); 899 } 900 901 /* 902 * Backoff Negotiation Code- only pertinent for SPI devices. 903 */ 904 static int 905 proberequestbackoff(struct cam_periph *periph, struct cam_ed *device) 906 { 907 struct ccb_trans_settings cts; 908 struct ccb_trans_settings_spi *spi; 909 910 memset(&cts, 0, sizeof (cts)); 911 xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE); 912 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 913 cts.type = CTS_TYPE_CURRENT_SETTINGS; 914 xpt_action((union ccb *)&cts); 915 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 916 if (bootverbose) { 917 xpt_print(periph->path, 918 "failed to get current device settings\n"); 919 } 920 return (0); 921 } 922 if (cts.transport != XPORT_SPI) { 923 if (bootverbose) { 924 xpt_print(periph->path, "not SPI transport\n"); 925 } 926 return (0); 927 } 928 spi = &cts.xport_specific.spi; 929 930 /* 931 * We cannot renegotiate sync rate if we don't have one. 932 */ 933 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) { 934 if (bootverbose) { 935 xpt_print(periph->path, "no sync rate known\n"); 936 } 937 return (0); 938 } 939 940 /* 941 * We'll assert that we don't have to touch PPR options- the 942 * SIM will see what we do with period and offset and adjust 943 * the PPR options as appropriate. 944 */ 945 946 /* 947 * A sync rate with unknown or zero offset is nonsensical. 948 * A sync period of zero means Async. 949 */ 950 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0 951 || spi->sync_offset == 0 || spi->sync_period == 0) { 952 if (bootverbose) { 953 xpt_print(periph->path, "no sync rate available\n"); 954 } 955 return (0); 956 } 957 958 if (device->flags & CAM_DEV_DV_HIT_BOTTOM) { 959 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 960 ("hit async: giving up on DV\n")); 961 return (0); 962 } 963 964 965 /* 966 * Jump sync_period up by one, but stop at 5MHz and fall back to Async. 967 * We don't try to remember 'last' settings to see if the SIM actually 968 * gets into the speed we want to set. We check on the SIM telling 969 * us that a requested speed is bad, but otherwise don't try and 970 * check the speed due to the asynchronous and handshake nature 971 * of speed setting. 972 */ 973 spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET; 974 for (;;) { 975 spi->sync_period++; 976 if (spi->sync_period >= 0xf) { 977 spi->sync_period = 0; 978 spi->sync_offset = 0; 979 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 980 ("setting to async for DV\n")); 981 /* 982 * Once we hit async, we don't want to try 983 * any more settings. 984 */ 985 device->flags |= CAM_DEV_DV_HIT_BOTTOM; 986 } else if (bootverbose) { 987 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 988 ("DV: period 0x%x\n", spi->sync_period)); 989 printf("setting period to 0x%x\n", spi->sync_period); 990 } 991 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS; 992 cts.type = CTS_TYPE_CURRENT_SETTINGS; 993 xpt_action((union ccb *)&cts); 994 if ((cts.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 995 break; 996 } 997 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 998 ("DV: failed to set period 0x%x\n", spi->sync_period)); 999 if (spi->sync_period == 0) { 1000 return (0); 1001 } 1002 } 1003 return (1); 1004 } 1005 1006 static void 1007 probedone(struct cam_periph *periph, union ccb *done_ccb) 1008 { 1009 probe_softc *softc; 1010 struct cam_path *path; 1011 u_int32_t priority; 1012 1013 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n")); 1014 1015 softc = (probe_softc *)periph->softc; 1016 path = done_ccb->ccb_h.path; 1017 priority = done_ccb->ccb_h.pinfo.priority; 1018 1019 switch (softc->action) { 1020 case PROBE_TUR: 1021 { 1022 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1023 1024 if (cam_periph_error(done_ccb, 0, 1025 SF_NO_PRINT, NULL) == ERESTART) 1026 return; 1027 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1028 /* Don't wedge the queue */ 1029 xpt_release_devq(done_ccb->ccb_h.path, 1030 /*count*/1, 1031 /*run_queue*/TRUE); 1032 } 1033 PROBE_SET_ACTION(softc, PROBE_INQUIRY); 1034 xpt_release_ccb(done_ccb); 1035 xpt_schedule(periph, priority); 1036 return; 1037 } 1038 case PROBE_INQUIRY: 1039 case PROBE_FULL_INQUIRY: 1040 { 1041 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 1042 struct scsi_inquiry_data *inq_buf; 1043 u_int8_t periph_qual; 1044 1045 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID; 1046 inq_buf = &path->device->inq_data; 1047 1048 periph_qual = SID_QUAL(inq_buf); 1049 1050 switch(periph_qual) { 1051 case SID_QUAL_LU_CONNECTED: 1052 { 1053 u_int8_t len; 1054 1055 /* 1056 * We conservatively request only 1057 * SHORT_INQUIRY_LEN bytes of inquiry 1058 * information during our first try 1059 * at sending an INQUIRY. If the device 1060 * has more information to give, 1061 * perform a second request specifying 1062 * the amount of information the device 1063 * is willing to give. 1064 */ 1065 len = inq_buf->additional_length 1066 + offsetof(struct scsi_inquiry_data, 1067 additional_length) + 1; 1068 if (softc->action == PROBE_INQUIRY 1069 && len > SHORT_INQUIRY_LENGTH) { 1070 PROBE_SET_ACTION(softc, PROBE_FULL_INQUIRY); 1071 xpt_release_ccb(done_ccb); 1072 xpt_schedule(periph, priority); 1073 return; 1074 } 1075 1076 scsi_find_quirk(path->device); 1077 1078 scsi_devise_transport(path); 1079 if (INQ_DATA_TQ_ENABLED(inq_buf)) 1080 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE); 1081 else 1082 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM_0); 1083 1084 if (path->device->flags & CAM_DEV_UNCONFIGURED) { 1085 path->device->flags &= ~CAM_DEV_UNCONFIGURED; 1086 xpt_acquire_device(path->device); 1087 } 1088 xpt_release_ccb(done_ccb); 1089 xpt_schedule(periph, priority); 1090 return; 1091 } 1092 default: 1093 break; 1094 } 1095 } else if (cam_periph_error(done_ccb, 0, 1096 done_ccb->ccb_h.target_lun > 0 1097 ? SF_RETRY_UA|SF_QUIET_IR 1098 : SF_RETRY_UA, 1099 &softc->saved_ccb) == ERESTART) { 1100 return; 1101 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1102 /* Don't wedge the queue */ 1103 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 1104 /*run_queue*/TRUE); 1105 } 1106 /* 1107 * If we get to this point, we got an error status back 1108 * from the inquiry and the error status doesn't require 1109 * automatically retrying the command. Therefore, the 1110 * inquiry failed. If we had inquiry information before 1111 * for this device, but this latest inquiry command failed, 1112 * the device has probably gone away. If this device isn't 1113 * already marked unconfigured, notify the peripheral 1114 * drivers that this device is no more. 1115 */ 1116 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0) 1117 /* Send the async notification. */ 1118 xpt_async(AC_LOST_DEVICE, path, NULL); 1119 1120 xpt_release_ccb(done_ccb); 1121 break; 1122 } 1123 case PROBE_MODE_SENSE: 1124 { 1125 struct ccb_scsiio *csio; 1126 struct scsi_mode_header_6 *mode_hdr; 1127 1128 csio = &done_ccb->csio; 1129 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr; 1130 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 1131 struct scsi_control_page *page; 1132 u_int8_t *offset; 1133 1134 offset = ((u_int8_t *)&mode_hdr[1]) 1135 + mode_hdr->blk_desc_len; 1136 page = (struct scsi_control_page *)offset; 1137 path->device->queue_flags = page->queue_flags; 1138 } else if (cam_periph_error(done_ccb, 0, 1139 SF_RETRY_UA|SF_NO_PRINT, 1140 &softc->saved_ccb) == ERESTART) { 1141 return; 1142 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1143 /* Don't wedge the queue */ 1144 xpt_release_devq(done_ccb->ccb_h.path, 1145 /*count*/1, /*run_queue*/TRUE); 1146 } 1147 xpt_release_ccb(done_ccb); 1148 free(mode_hdr, M_CAMXPT); 1149 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM_0); 1150 xpt_schedule(periph, priority); 1151 return; 1152 } 1153 case PROBE_SERIAL_NUM_0: 1154 { 1155 struct ccb_scsiio *csio; 1156 struct scsi_vpd_supported_page_list *page_list; 1157 int length, serialnum_supported, i; 1158 1159 serialnum_supported = 0; 1160 csio = &done_ccb->csio; 1161 page_list = 1162 (struct scsi_vpd_supported_page_list *)csio->data_ptr; 1163 1164 if (page_list == NULL) { 1165 /* 1166 * Don't process the command as it was never sent 1167 */ 1168 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP 1169 && (page_list->length > 0)) { 1170 length = min(page_list->length, 1171 SVPD_SUPPORTED_PAGES_SIZE); 1172 for (i = 0; i < length; i++) { 1173 if (page_list->list[i] == 1174 SVPD_UNIT_SERIAL_NUMBER) { 1175 serialnum_supported = 1; 1176 break; 1177 } 1178 } 1179 } else if (cam_periph_error(done_ccb, 0, 1180 SF_RETRY_UA|SF_NO_PRINT, 1181 &softc->saved_ccb) == ERESTART) { 1182 return; 1183 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1184 /* Don't wedge the queue */ 1185 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 1186 /*run_queue*/TRUE); 1187 } 1188 1189 if (page_list != NULL) 1190 free(page_list, M_CAMXPT); 1191 1192 if (serialnum_supported) { 1193 xpt_release_ccb(done_ccb); 1194 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM_1); 1195 xpt_schedule(periph, priority); 1196 return; 1197 } 1198 1199 csio->data_ptr = NULL; 1200 /* FALLTHROUGH */ 1201 } 1202 1203 case PROBE_SERIAL_NUM_1: 1204 { 1205 struct ccb_scsiio *csio; 1206 struct scsi_vpd_unit_serial_number *serial_buf; 1207 u_int32_t priority; 1208 int changed; 1209 int have_serialnum; 1210 1211 changed = 1; 1212 have_serialnum = 0; 1213 csio = &done_ccb->csio; 1214 priority = done_ccb->ccb_h.pinfo.priority; 1215 serial_buf = 1216 (struct scsi_vpd_unit_serial_number *)csio->data_ptr; 1217 1218 /* Clean up from previous instance of this device */ 1219 if (path->device->serial_num != NULL) { 1220 free(path->device->serial_num, M_CAMXPT); 1221 path->device->serial_num = NULL; 1222 path->device->serial_num_len = 0; 1223 } 1224 1225 if (serial_buf == NULL) { 1226 /* 1227 * Don't process the command as it was never sent 1228 */ 1229 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP 1230 && (serial_buf->length > 0)) { 1231 1232 have_serialnum = 1; 1233 path->device->serial_num = 1234 (u_int8_t *)malloc((serial_buf->length + 1), 1235 M_CAMXPT, M_NOWAIT); 1236 if (path->device->serial_num != NULL) { 1237 bcopy(serial_buf->serial_num, 1238 path->device->serial_num, 1239 serial_buf->length); 1240 path->device->serial_num_len = 1241 serial_buf->length; 1242 path->device->serial_num[serial_buf->length] 1243 = '\0'; 1244 } 1245 } else if (cam_periph_error(done_ccb, 0, 1246 SF_RETRY_UA|SF_NO_PRINT, 1247 &softc->saved_ccb) == ERESTART) { 1248 return; 1249 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1250 /* Don't wedge the queue */ 1251 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 1252 /*run_queue*/TRUE); 1253 } 1254 1255 /* 1256 * Let's see if we have seen this device before. 1257 */ 1258 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) { 1259 MD5_CTX context; 1260 u_int8_t digest[16]; 1261 1262 MD5Init(&context); 1263 1264 MD5Update(&context, 1265 (unsigned char *)&path->device->inq_data, 1266 sizeof(struct scsi_inquiry_data)); 1267 1268 if (have_serialnum) 1269 MD5Update(&context, serial_buf->serial_num, 1270 serial_buf->length); 1271 1272 MD5Final(digest, &context); 1273 if (bcmp(softc->digest, digest, 16) == 0) 1274 changed = 0; 1275 1276 /* 1277 * XXX Do we need to do a TUR in order to ensure 1278 * that the device really hasn't changed??? 1279 */ 1280 if ((changed != 0) 1281 && ((softc->flags & PROBE_NO_ANNOUNCE) == 0)) 1282 xpt_async(AC_LOST_DEVICE, path, NULL); 1283 } 1284 if (serial_buf != NULL) 1285 free(serial_buf, M_CAMXPT); 1286 1287 if (changed != 0) { 1288 /* 1289 * Now that we have all the necessary 1290 * information to safely perform transfer 1291 * negotiations... Controllers don't perform 1292 * any negotiation or tagged queuing until 1293 * after the first XPT_SET_TRAN_SETTINGS ccb is 1294 * received. So, on a new device, just retrieve 1295 * the user settings, and set them as the current 1296 * settings to set the device up. 1297 */ 1298 proberequestdefaultnegotiation(periph); 1299 xpt_release_ccb(done_ccb); 1300 1301 /* 1302 * Perform a TUR to allow the controller to 1303 * perform any necessary transfer negotiation. 1304 */ 1305 PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION); 1306 xpt_schedule(periph, priority); 1307 return; 1308 } 1309 xpt_release_ccb(done_ccb); 1310 break; 1311 } 1312 case PROBE_TUR_FOR_NEGOTIATION: 1313 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1314 DELAY(500000); 1315 if (cam_periph_error(done_ccb, 0, SF_RETRY_UA, 1316 NULL) == ERESTART) 1317 return; 1318 } 1319 /* FALLTHROUGH */ 1320 case PROBE_DV_EXIT: 1321 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1322 /* Don't wedge the queue */ 1323 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 1324 /*run_queue*/TRUE); 1325 } 1326 /* 1327 * Do Domain Validation for lun 0 on devices that claim 1328 * to support Synchronous Transfer modes. 1329 */ 1330 if (softc->action == PROBE_TUR_FOR_NEGOTIATION 1331 && done_ccb->ccb_h.target_lun == 0 1332 && (path->device->inq_data.flags & SID_Sync) != 0 1333 && (path->device->flags & CAM_DEV_IN_DV) == 0) { 1334 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1335 ("Begin Domain Validation\n")); 1336 path->device->flags |= CAM_DEV_IN_DV; 1337 xpt_release_ccb(done_ccb); 1338 PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV1); 1339 xpt_schedule(periph, priority); 1340 return; 1341 } 1342 if (softc->action == PROBE_DV_EXIT) { 1343 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1344 ("Leave Domain Validation\n")); 1345 } 1346 if (path->device->flags & CAM_DEV_UNCONFIGURED) { 1347 path->device->flags &= ~CAM_DEV_UNCONFIGURED; 1348 xpt_acquire_device(path->device); 1349 } 1350 path->device->flags &= 1351 ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM); 1352 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) { 1353 /* Inform the XPT that a new device has been found */ 1354 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE; 1355 xpt_action(done_ccb); 1356 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path, 1357 done_ccb); 1358 } 1359 xpt_release_ccb(done_ccb); 1360 break; 1361 case PROBE_INQUIRY_BASIC_DV1: 1362 case PROBE_INQUIRY_BASIC_DV2: 1363 { 1364 struct scsi_inquiry_data *nbuf; 1365 struct ccb_scsiio *csio; 1366 1367 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1368 /* Don't wedge the queue */ 1369 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 1370 /*run_queue*/TRUE); 1371 } 1372 csio = &done_ccb->csio; 1373 nbuf = (struct scsi_inquiry_data *)csio->data_ptr; 1374 if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) { 1375 xpt_print(path, 1376 "inquiry data fails comparison at DV%d step\n", 1377 softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2); 1378 if (proberequestbackoff(periph, path->device)) { 1379 path->device->flags &= ~CAM_DEV_IN_DV; 1380 PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION); 1381 } else { 1382 /* give up */ 1383 PROBE_SET_ACTION(softc, PROBE_DV_EXIT); 1384 } 1385 free(nbuf, M_CAMXPT); 1386 xpt_release_ccb(done_ccb); 1387 xpt_schedule(periph, priority); 1388 return; 1389 } 1390 free(nbuf, M_CAMXPT); 1391 if (softc->action == PROBE_INQUIRY_BASIC_DV1) { 1392 PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV2); 1393 xpt_release_ccb(done_ccb); 1394 xpt_schedule(periph, priority); 1395 return; 1396 } 1397 if (softc->action == PROBE_INQUIRY_BASIC_DV2) { 1398 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1399 ("Leave Domain Validation Successfully\n")); 1400 } 1401 if (path->device->flags & CAM_DEV_UNCONFIGURED) { 1402 path->device->flags &= ~CAM_DEV_UNCONFIGURED; 1403 xpt_acquire_device(path->device); 1404 } 1405 path->device->flags &= 1406 ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM); 1407 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) { 1408 /* Inform the XPT that a new device has been found */ 1409 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE; 1410 xpt_action(done_ccb); 1411 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path, 1412 done_ccb); 1413 } 1414 xpt_release_ccb(done_ccb); 1415 break; 1416 } 1417 case PROBE_INVALID: 1418 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_INFO, 1419 ("probedone: invalid action state\n")); 1420 default: 1421 break; 1422 } 1423 done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs); 1424 TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe); 1425 done_ccb->ccb_h.status = CAM_REQ_CMP; 1426 xpt_done(done_ccb); 1427 if (TAILQ_FIRST(&softc->request_ccbs) == NULL) { 1428 cam_release_devq(periph->path, 1429 RELSIM_RELEASE_RUNLEVEL, 0, CAM_RL_XPT + 1, FALSE); 1430 cam_periph_invalidate(periph); 1431 cam_periph_release_locked(periph); 1432 } else { 1433 probeschedule(periph); 1434 } 1435 } 1436 1437 static void 1438 probecleanup(struct cam_periph *periph) 1439 { 1440 free(periph->softc, M_CAMXPT); 1441 } 1442 1443 static void 1444 scsi_find_quirk(struct cam_ed *device) 1445 { 1446 struct scsi_quirk_entry *quirk; 1447 caddr_t match; 1448 1449 match = cam_quirkmatch((caddr_t)&device->inq_data, 1450 (caddr_t)scsi_quirk_table, 1451 sizeof(scsi_quirk_table) / 1452 sizeof(*scsi_quirk_table), 1453 sizeof(*scsi_quirk_table), scsi_inquiry_match); 1454 1455 if (match == NULL) 1456 panic("xpt_find_quirk: device didn't match wildcard entry!!"); 1457 1458 quirk = (struct scsi_quirk_entry *)match; 1459 device->quirk = quirk; 1460 device->mintags = quirk->mintags; 1461 device->maxtags = quirk->maxtags; 1462 } 1463 1464 static int 1465 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS) 1466 { 1467 int error, bool; 1468 1469 bool = cam_srch_hi; 1470 error = sysctl_handle_int(oidp, &bool, 0, req); 1471 if (error != 0 || req->newptr == NULL) 1472 return (error); 1473 if (bool == 0 || bool == 1) { 1474 cam_srch_hi = bool; 1475 return (0); 1476 } else { 1477 return (EINVAL); 1478 } 1479 } 1480 1481 typedef struct { 1482 union ccb *request_ccb; 1483 struct ccb_pathinq *cpi; 1484 int counter; 1485 } scsi_scan_bus_info; 1486 1487 /* 1488 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb. 1489 * As the scan progresses, scsi_scan_bus is used as the 1490 * callback on completion function. 1491 */ 1492 static void 1493 scsi_scan_bus(struct cam_periph *periph, union ccb *request_ccb) 1494 { 1495 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE, 1496 ("scsi_scan_bus\n")); 1497 switch (request_ccb->ccb_h.func_code) { 1498 case XPT_SCAN_BUS: 1499 { 1500 scsi_scan_bus_info *scan_info; 1501 union ccb *work_ccb, *reset_ccb; 1502 struct cam_path *path; 1503 u_int i; 1504 u_int max_target; 1505 u_int initiator_id; 1506 1507 /* Find out the characteristics of the bus */ 1508 work_ccb = xpt_alloc_ccb_nowait(); 1509 if (work_ccb == NULL) { 1510 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 1511 xpt_done(request_ccb); 1512 return; 1513 } 1514 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path, 1515 request_ccb->ccb_h.pinfo.priority); 1516 work_ccb->ccb_h.func_code = XPT_PATH_INQ; 1517 xpt_action(work_ccb); 1518 if (work_ccb->ccb_h.status != CAM_REQ_CMP) { 1519 request_ccb->ccb_h.status = work_ccb->ccb_h.status; 1520 xpt_free_ccb(work_ccb); 1521 xpt_done(request_ccb); 1522 return; 1523 } 1524 1525 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) { 1526 /* 1527 * Can't scan the bus on an adapter that 1528 * cannot perform the initiator role. 1529 */ 1530 request_ccb->ccb_h.status = CAM_REQ_CMP; 1531 xpt_free_ccb(work_ccb); 1532 xpt_done(request_ccb); 1533 return; 1534 } 1535 1536 /* We may need to reset bus first, if we haven't done it yet. */ 1537 if ((work_ccb->cpi.hba_inquiry & 1538 (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) && 1539 !(work_ccb->cpi.hba_misc & PIM_NOBUSRESET) && 1540 !timevalisset(&request_ccb->ccb_h.path->bus->last_reset)) { 1541 reset_ccb = xpt_alloc_ccb_nowait(); 1542 xpt_setup_ccb(&reset_ccb->ccb_h, request_ccb->ccb_h.path, 1543 CAM_PRIORITY_NONE); 1544 reset_ccb->ccb_h.func_code = XPT_RESET_BUS; 1545 xpt_action(reset_ccb); 1546 if (reset_ccb->ccb_h.status != CAM_REQ_CMP) { 1547 request_ccb->ccb_h.status = reset_ccb->ccb_h.status; 1548 xpt_free_ccb(reset_ccb); 1549 xpt_free_ccb(work_ccb); 1550 xpt_done(request_ccb); 1551 return; 1552 } 1553 xpt_free_ccb(reset_ccb); 1554 } 1555 1556 /* Save some state for use while we probe for devices */ 1557 scan_info = (scsi_scan_bus_info *) 1558 malloc(sizeof(scsi_scan_bus_info), M_CAMXPT, M_NOWAIT); 1559 if (scan_info == NULL) { 1560 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 1561 xpt_done(request_ccb); 1562 return; 1563 } 1564 scan_info->request_ccb = request_ccb; 1565 scan_info->cpi = &work_ccb->cpi; 1566 1567 /* Cache on our stack so we can work asynchronously */ 1568 max_target = scan_info->cpi->max_target; 1569 initiator_id = scan_info->cpi->initiator_id; 1570 1571 1572 /* 1573 * We can scan all targets in parallel, or do it sequentially. 1574 */ 1575 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) { 1576 max_target = 0; 1577 scan_info->counter = 0; 1578 } else { 1579 scan_info->counter = scan_info->cpi->max_target + 1; 1580 if (scan_info->cpi->initiator_id < scan_info->counter) { 1581 scan_info->counter--; 1582 } 1583 } 1584 1585 for (i = 0; i <= max_target; i++) { 1586 cam_status status; 1587 if (i == initiator_id) 1588 continue; 1589 1590 status = xpt_create_path(&path, xpt_periph, 1591 request_ccb->ccb_h.path_id, 1592 i, 0); 1593 if (status != CAM_REQ_CMP) { 1594 printf("scsi_scan_bus: xpt_create_path failed" 1595 " with status %#x, bus scan halted\n", 1596 status); 1597 free(scan_info, M_CAMXPT); 1598 request_ccb->ccb_h.status = status; 1599 xpt_free_ccb(work_ccb); 1600 xpt_done(request_ccb); 1601 break; 1602 } 1603 work_ccb = xpt_alloc_ccb_nowait(); 1604 if (work_ccb == NULL) { 1605 xpt_free_ccb((union ccb *)scan_info->cpi); 1606 free(scan_info, M_CAMXPT); 1607 xpt_free_path(path); 1608 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 1609 xpt_done(request_ccb); 1610 break; 1611 } 1612 xpt_setup_ccb(&work_ccb->ccb_h, path, 1613 request_ccb->ccb_h.pinfo.priority); 1614 work_ccb->ccb_h.func_code = XPT_SCAN_LUN; 1615 work_ccb->ccb_h.cbfcnp = scsi_scan_bus; 1616 work_ccb->ccb_h.ppriv_ptr0 = scan_info; 1617 work_ccb->crcn.flags = request_ccb->crcn.flags; 1618 xpt_action(work_ccb); 1619 } 1620 break; 1621 } 1622 case XPT_SCAN_LUN: 1623 { 1624 cam_status status; 1625 struct cam_path *path; 1626 scsi_scan_bus_info *scan_info; 1627 path_id_t path_id; 1628 target_id_t target_id; 1629 lun_id_t lun_id; 1630 1631 /* Reuse the same CCB to query if a device was really found */ 1632 scan_info = (scsi_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0; 1633 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path, 1634 request_ccb->ccb_h.pinfo.priority); 1635 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE; 1636 1637 path_id = request_ccb->ccb_h.path_id; 1638 target_id = request_ccb->ccb_h.target_id; 1639 lun_id = request_ccb->ccb_h.target_lun; 1640 xpt_action(request_ccb); 1641 1642 if (request_ccb->ccb_h.status != CAM_REQ_CMP) { 1643 struct cam_ed *device; 1644 struct cam_et *target; 1645 int phl; 1646 1647 /* 1648 * If we already probed lun 0 successfully, or 1649 * we have additional configured luns on this 1650 * target that might have "gone away", go onto 1651 * the next lun. 1652 */ 1653 target = request_ccb->ccb_h.path->target; 1654 /* 1655 * We may touch devices that we don't 1656 * hold references too, so ensure they 1657 * don't disappear out from under us. 1658 * The target above is referenced by the 1659 * path in the request ccb. 1660 */ 1661 phl = 0; 1662 device = TAILQ_FIRST(&target->ed_entries); 1663 if (device != NULL) { 1664 phl = CAN_SRCH_HI_SPARSE(device); 1665 if (device->lun_id == 0) 1666 device = TAILQ_NEXT(device, links); 1667 } 1668 if ((lun_id != 0) || (device != NULL)) { 1669 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl) 1670 lun_id++; 1671 } 1672 } else { 1673 struct cam_ed *device; 1674 1675 device = request_ccb->ccb_h.path->device; 1676 1677 if ((SCSI_QUIRK(device)->quirks & 1678 CAM_QUIRK_NOLUNS) == 0) { 1679 /* Try the next lun */ 1680 if (lun_id < (CAM_SCSI2_MAXLUN-1) 1681 || CAN_SRCH_HI_DENSE(device)) 1682 lun_id++; 1683 } 1684 } 1685 1686 /* 1687 * Free the current request path- we're done with it. 1688 */ 1689 xpt_free_path(request_ccb->ccb_h.path); 1690 1691 /* 1692 * Check to see if we scan any further luns. 1693 */ 1694 if (lun_id == request_ccb->ccb_h.target_lun 1695 || lun_id > scan_info->cpi->max_lun) { 1696 int done; 1697 1698 hop_again: 1699 done = 0; 1700 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) { 1701 scan_info->counter++; 1702 if (scan_info->counter == 1703 scan_info->cpi->initiator_id) { 1704 scan_info->counter++; 1705 } 1706 if (scan_info->counter >= 1707 scan_info->cpi->max_target+1) { 1708 done = 1; 1709 } 1710 } else { 1711 scan_info->counter--; 1712 if (scan_info->counter == 0) { 1713 done = 1; 1714 } 1715 } 1716 if (done) { 1717 xpt_free_ccb(request_ccb); 1718 xpt_free_ccb((union ccb *)scan_info->cpi); 1719 request_ccb = scan_info->request_ccb; 1720 free(scan_info, M_CAMXPT); 1721 request_ccb->ccb_h.status = CAM_REQ_CMP; 1722 xpt_done(request_ccb); 1723 break; 1724 } 1725 1726 if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) { 1727 xpt_free_ccb(request_ccb); 1728 break; 1729 } 1730 status = xpt_create_path(&path, xpt_periph, 1731 scan_info->request_ccb->ccb_h.path_id, 1732 scan_info->counter, 0); 1733 if (status != CAM_REQ_CMP) { 1734 printf("scsi_scan_bus: xpt_create_path failed" 1735 " with status %#x, bus scan halted\n", 1736 status); 1737 xpt_free_ccb(request_ccb); 1738 xpt_free_ccb((union ccb *)scan_info->cpi); 1739 request_ccb = scan_info->request_ccb; 1740 free(scan_info, M_CAMXPT); 1741 request_ccb->ccb_h.status = status; 1742 xpt_done(request_ccb); 1743 break; 1744 } 1745 xpt_setup_ccb(&request_ccb->ccb_h, path, 1746 request_ccb->ccb_h.pinfo.priority); 1747 request_ccb->ccb_h.func_code = XPT_SCAN_LUN; 1748 request_ccb->ccb_h.cbfcnp = scsi_scan_bus; 1749 request_ccb->ccb_h.ppriv_ptr0 = scan_info; 1750 request_ccb->crcn.flags = 1751 scan_info->request_ccb->crcn.flags; 1752 } else { 1753 status = xpt_create_path(&path, xpt_periph, 1754 path_id, target_id, lun_id); 1755 if (status != CAM_REQ_CMP) { 1756 printf("scsi_scan_bus: xpt_create_path failed " 1757 "with status %#x, halting LUN scan\n", 1758 status); 1759 goto hop_again; 1760 } 1761 xpt_setup_ccb(&request_ccb->ccb_h, path, 1762 request_ccb->ccb_h.pinfo.priority); 1763 request_ccb->ccb_h.func_code = XPT_SCAN_LUN; 1764 request_ccb->ccb_h.cbfcnp = scsi_scan_bus; 1765 request_ccb->ccb_h.ppriv_ptr0 = scan_info; 1766 request_ccb->crcn.flags = 1767 scan_info->request_ccb->crcn.flags; 1768 } 1769 xpt_action(request_ccb); 1770 break; 1771 } 1772 default: 1773 break; 1774 } 1775 } 1776 1777 static void 1778 scsi_scan_lun(struct cam_periph *periph, struct cam_path *path, 1779 cam_flags flags, union ccb *request_ccb) 1780 { 1781 struct ccb_pathinq cpi; 1782 cam_status status; 1783 struct cam_path *new_path; 1784 struct cam_periph *old_periph; 1785 1786 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("scsi_scan_lun\n")); 1787 1788 xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE); 1789 cpi.ccb_h.func_code = XPT_PATH_INQ; 1790 xpt_action((union ccb *)&cpi); 1791 1792 if (cpi.ccb_h.status != CAM_REQ_CMP) { 1793 if (request_ccb != NULL) { 1794 request_ccb->ccb_h.status = cpi.ccb_h.status; 1795 xpt_done(request_ccb); 1796 } 1797 return; 1798 } 1799 1800 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) { 1801 /* 1802 * Can't scan the bus on an adapter that 1803 * cannot perform the initiator role. 1804 */ 1805 if (request_ccb != NULL) { 1806 request_ccb->ccb_h.status = CAM_REQ_CMP; 1807 xpt_done(request_ccb); 1808 } 1809 return; 1810 } 1811 1812 if (request_ccb == NULL) { 1813 request_ccb = malloc(sizeof(union ccb), M_CAMXPT, M_NOWAIT); 1814 if (request_ccb == NULL) { 1815 xpt_print(path, "scsi_scan_lun: can't allocate CCB, " 1816 "can't continue\n"); 1817 return; 1818 } 1819 new_path = malloc(sizeof(*new_path), M_CAMXPT, M_NOWAIT); 1820 if (new_path == NULL) { 1821 xpt_print(path, "scsi_scan_lun: can't allocate path, " 1822 "can't continue\n"); 1823 free(request_ccb, M_CAMXPT); 1824 return; 1825 } 1826 status = xpt_compile_path(new_path, xpt_periph, 1827 path->bus->path_id, 1828 path->target->target_id, 1829 path->device->lun_id); 1830 1831 if (status != CAM_REQ_CMP) { 1832 xpt_print(path, "scsi_scan_lun: can't compile path, " 1833 "can't continue\n"); 1834 free(request_ccb, M_CAMXPT); 1835 free(new_path, M_CAMXPT); 1836 return; 1837 } 1838 xpt_setup_ccb(&request_ccb->ccb_h, new_path, CAM_PRIORITY_XPT); 1839 request_ccb->ccb_h.cbfcnp = xptscandone; 1840 request_ccb->ccb_h.func_code = XPT_SCAN_LUN; 1841 request_ccb->crcn.flags = flags; 1842 } 1843 1844 if ((old_periph = cam_periph_find(path, "probe")) != NULL) { 1845 probe_softc *softc; 1846 1847 softc = (probe_softc *)old_periph->softc; 1848 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h, 1849 periph_links.tqe); 1850 } else { 1851 status = cam_periph_alloc(proberegister, NULL, probecleanup, 1852 probestart, "probe", 1853 CAM_PERIPH_BIO, 1854 request_ccb->ccb_h.path, NULL, 0, 1855 request_ccb); 1856 1857 if (status != CAM_REQ_CMP) { 1858 xpt_print(path, "scsi_scan_lun: cam_alloc_periph " 1859 "returned an error, can't continue probe\n"); 1860 request_ccb->ccb_h.status = status; 1861 xpt_done(request_ccb); 1862 } 1863 } 1864 } 1865 1866 static void 1867 xptscandone(struct cam_periph *periph, union ccb *done_ccb) 1868 { 1869 xpt_release_path(done_ccb->ccb_h.path); 1870 free(done_ccb->ccb_h.path, M_CAMXPT); 1871 free(done_ccb, M_CAMXPT); 1872 } 1873 1874 static struct cam_ed * 1875 scsi_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id) 1876 { 1877 struct cam_path path; 1878 struct scsi_quirk_entry *quirk; 1879 struct cam_ed *device; 1880 struct cam_ed *cur_device; 1881 1882 device = xpt_alloc_device(bus, target, lun_id); 1883 if (device == NULL) 1884 return (NULL); 1885 1886 /* 1887 * Take the default quirk entry until we have inquiry 1888 * data and can determine a better quirk to use. 1889 */ 1890 quirk = &scsi_quirk_table[scsi_quirk_table_size - 1]; 1891 device->quirk = (void *)quirk; 1892 device->mintags = quirk->mintags; 1893 device->maxtags = quirk->maxtags; 1894 bzero(&device->inq_data, sizeof(device->inq_data)); 1895 device->inq_flags = 0; 1896 device->queue_flags = 0; 1897 device->serial_num = NULL; 1898 device->serial_num_len = 0; 1899 1900 /* 1901 * XXX should be limited by number of CCBs this bus can 1902 * do. 1903 */ 1904 bus->sim->max_ccbs += device->ccbq.devq_openings; 1905 /* Insertion sort into our target's device list */ 1906 cur_device = TAILQ_FIRST(&target->ed_entries); 1907 while (cur_device != NULL && cur_device->lun_id < lun_id) 1908 cur_device = TAILQ_NEXT(cur_device, links); 1909 if (cur_device != NULL) { 1910 TAILQ_INSERT_BEFORE(cur_device, device, links); 1911 } else { 1912 TAILQ_INSERT_TAIL(&target->ed_entries, device, links); 1913 } 1914 target->generation++; 1915 if (lun_id != CAM_LUN_WILDCARD) { 1916 xpt_compile_path(&path, 1917 NULL, 1918 bus->path_id, 1919 target->target_id, 1920 lun_id); 1921 scsi_devise_transport(&path); 1922 xpt_release_path(&path); 1923 } 1924 1925 return (device); 1926 } 1927 1928 static void 1929 scsi_devise_transport(struct cam_path *path) 1930 { 1931 struct ccb_pathinq cpi; 1932 struct ccb_trans_settings cts; 1933 struct scsi_inquiry_data *inq_buf; 1934 1935 /* Get transport information from the SIM */ 1936 xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE); 1937 cpi.ccb_h.func_code = XPT_PATH_INQ; 1938 xpt_action((union ccb *)&cpi); 1939 1940 inq_buf = NULL; 1941 if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0) 1942 inq_buf = &path->device->inq_data; 1943 path->device->protocol = PROTO_SCSI; 1944 path->device->protocol_version = 1945 inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version; 1946 path->device->transport = cpi.transport; 1947 path->device->transport_version = cpi.transport_version; 1948 1949 /* 1950 * Any device not using SPI3 features should 1951 * be considered SPI2 or lower. 1952 */ 1953 if (inq_buf != NULL) { 1954 if (path->device->transport == XPORT_SPI 1955 && (inq_buf->spi3data & SID_SPI_MASK) == 0 1956 && path->device->transport_version > 2) 1957 path->device->transport_version = 2; 1958 } else { 1959 struct cam_ed* otherdev; 1960 1961 for (otherdev = TAILQ_FIRST(&path->target->ed_entries); 1962 otherdev != NULL; 1963 otherdev = TAILQ_NEXT(otherdev, links)) { 1964 if (otherdev != path->device) 1965 break; 1966 } 1967 1968 if (otherdev != NULL) { 1969 /* 1970 * Initially assume the same versioning as 1971 * prior luns for this target. 1972 */ 1973 path->device->protocol_version = 1974 otherdev->protocol_version; 1975 path->device->transport_version = 1976 otherdev->transport_version; 1977 } else { 1978 /* Until we know better, opt for safty */ 1979 path->device->protocol_version = 2; 1980 if (path->device->transport == XPORT_SPI) 1981 path->device->transport_version = 2; 1982 else 1983 path->device->transport_version = 0; 1984 } 1985 } 1986 1987 /* 1988 * XXX 1989 * For a device compliant with SPC-2 we should be able 1990 * to determine the transport version supported by 1991 * scrutinizing the version descriptors in the 1992 * inquiry buffer. 1993 */ 1994 1995 /* Tell the controller what we think */ 1996 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE); 1997 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS; 1998 cts.type = CTS_TYPE_CURRENT_SETTINGS; 1999 cts.transport = path->device->transport; 2000 cts.transport_version = path->device->transport_version; 2001 cts.protocol = path->device->protocol; 2002 cts.protocol_version = path->device->protocol_version; 2003 cts.proto_specific.valid = 0; 2004 cts.xport_specific.valid = 0; 2005 xpt_action((union ccb *)&cts); 2006 } 2007 2008 static void 2009 scsi_action(union ccb *start_ccb) 2010 { 2011 2012 switch (start_ccb->ccb_h.func_code) { 2013 case XPT_SET_TRAN_SETTINGS: 2014 { 2015 scsi_set_transfer_settings(&start_ccb->cts, 2016 start_ccb->ccb_h.path->device, 2017 /*async_update*/FALSE); 2018 break; 2019 } 2020 case XPT_SCAN_BUS: 2021 scsi_scan_bus(start_ccb->ccb_h.path->periph, start_ccb); 2022 break; 2023 case XPT_SCAN_LUN: 2024 scsi_scan_lun(start_ccb->ccb_h.path->periph, 2025 start_ccb->ccb_h.path, start_ccb->crcn.flags, 2026 start_ccb); 2027 break; 2028 case XPT_GET_TRAN_SETTINGS: 2029 { 2030 struct cam_sim *sim; 2031 2032 sim = start_ccb->ccb_h.path->bus->sim; 2033 (*(sim->sim_action))(sim, start_ccb); 2034 break; 2035 } 2036 default: 2037 xpt_action_default(start_ccb); 2038 break; 2039 } 2040 } 2041 2042 static void 2043 scsi_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device, 2044 int async_update) 2045 { 2046 struct ccb_pathinq cpi; 2047 struct ccb_trans_settings cur_cts; 2048 struct ccb_trans_settings_scsi *scsi; 2049 struct ccb_trans_settings_scsi *cur_scsi; 2050 struct cam_sim *sim; 2051 struct scsi_inquiry_data *inq_data; 2052 2053 if (device == NULL) { 2054 cts->ccb_h.status = CAM_PATH_INVALID; 2055 xpt_done((union ccb *)cts); 2056 return; 2057 } 2058 2059 if (cts->protocol == PROTO_UNKNOWN 2060 || cts->protocol == PROTO_UNSPECIFIED) { 2061 cts->protocol = device->protocol; 2062 cts->protocol_version = device->protocol_version; 2063 } 2064 2065 if (cts->protocol_version == PROTO_VERSION_UNKNOWN 2066 || cts->protocol_version == PROTO_VERSION_UNSPECIFIED) 2067 cts->protocol_version = device->protocol_version; 2068 2069 if (cts->protocol != device->protocol) { 2070 xpt_print(cts->ccb_h.path, "Uninitialized Protocol %x:%x?\n", 2071 cts->protocol, device->protocol); 2072 cts->protocol = device->protocol; 2073 } 2074 2075 if (cts->protocol_version > device->protocol_version) { 2076 if (bootverbose) { 2077 xpt_print(cts->ccb_h.path, "Down reving Protocol " 2078 "Version from %d to %d?\n", cts->protocol_version, 2079 device->protocol_version); 2080 } 2081 cts->protocol_version = device->protocol_version; 2082 } 2083 2084 if (cts->transport == XPORT_UNKNOWN 2085 || cts->transport == XPORT_UNSPECIFIED) { 2086 cts->transport = device->transport; 2087 cts->transport_version = device->transport_version; 2088 } 2089 2090 if (cts->transport_version == XPORT_VERSION_UNKNOWN 2091 || cts->transport_version == XPORT_VERSION_UNSPECIFIED) 2092 cts->transport_version = device->transport_version; 2093 2094 if (cts->transport != device->transport) { 2095 xpt_print(cts->ccb_h.path, "Uninitialized Transport %x:%x?\n", 2096 cts->transport, device->transport); 2097 cts->transport = device->transport; 2098 } 2099 2100 if (cts->transport_version > device->transport_version) { 2101 if (bootverbose) { 2102 xpt_print(cts->ccb_h.path, "Down reving Transport " 2103 "Version from %d to %d?\n", cts->transport_version, 2104 device->transport_version); 2105 } 2106 cts->transport_version = device->transport_version; 2107 } 2108 2109 sim = cts->ccb_h.path->bus->sim; 2110 2111 /* 2112 * Nothing more of interest to do unless 2113 * this is a device connected via the 2114 * SCSI protocol. 2115 */ 2116 if (cts->protocol != PROTO_SCSI) { 2117 if (async_update == FALSE) 2118 (*(sim->sim_action))(sim, (union ccb *)cts); 2119 return; 2120 } 2121 2122 inq_data = &device->inq_data; 2123 scsi = &cts->proto_specific.scsi; 2124 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, CAM_PRIORITY_NONE); 2125 cpi.ccb_h.func_code = XPT_PATH_INQ; 2126 xpt_action((union ccb *)&cpi); 2127 2128 /* SCSI specific sanity checking */ 2129 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0 2130 || (INQ_DATA_TQ_ENABLED(inq_data)) == 0 2131 || (device->queue_flags & SCP_QUEUE_DQUE) != 0 2132 || (device->mintags == 0)) { 2133 /* 2134 * Can't tag on hardware that doesn't support tags, 2135 * doesn't have it enabled, or has broken tag support. 2136 */ 2137 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 2138 } 2139 2140 if (async_update == FALSE) { 2141 /* 2142 * Perform sanity checking against what the 2143 * controller and device can do. 2144 */ 2145 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, CAM_PRIORITY_NONE); 2146 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 2147 cur_cts.type = cts->type; 2148 xpt_action((union ccb *)&cur_cts); 2149 if ((cur_cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 2150 return; 2151 } 2152 cur_scsi = &cur_cts.proto_specific.scsi; 2153 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) { 2154 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 2155 scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB; 2156 } 2157 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0) 2158 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 2159 } 2160 2161 /* SPI specific sanity checking */ 2162 if (cts->transport == XPORT_SPI && async_update == FALSE) { 2163 u_int spi3caps; 2164 struct ccb_trans_settings_spi *spi; 2165 struct ccb_trans_settings_spi *cur_spi; 2166 2167 spi = &cts->xport_specific.spi; 2168 2169 cur_spi = &cur_cts.xport_specific.spi; 2170 2171 /* Fill in any gaps in what the user gave us */ 2172 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) 2173 spi->sync_period = cur_spi->sync_period; 2174 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) 2175 spi->sync_period = 0; 2176 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) 2177 spi->sync_offset = cur_spi->sync_offset; 2178 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) 2179 spi->sync_offset = 0; 2180 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) 2181 spi->ppr_options = cur_spi->ppr_options; 2182 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) 2183 spi->ppr_options = 0; 2184 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0) 2185 spi->bus_width = cur_spi->bus_width; 2186 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0) 2187 spi->bus_width = 0; 2188 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) { 2189 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB; 2190 spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB; 2191 } 2192 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0) 2193 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB; 2194 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0 2195 && (inq_data->flags & SID_Sync) == 0 2196 && cts->type == CTS_TYPE_CURRENT_SETTINGS) 2197 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)) { 2198 /* Force async */ 2199 spi->sync_period = 0; 2200 spi->sync_offset = 0; 2201 } 2202 2203 switch (spi->bus_width) { 2204 case MSG_EXT_WDTR_BUS_32_BIT: 2205 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0 2206 || (inq_data->flags & SID_WBus32) != 0 2207 || cts->type == CTS_TYPE_USER_SETTINGS) 2208 && (cpi.hba_inquiry & PI_WIDE_32) != 0) 2209 break; 2210 /* Fall Through to 16-bit */ 2211 case MSG_EXT_WDTR_BUS_16_BIT: 2212 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0 2213 || (inq_data->flags & SID_WBus16) != 0 2214 || cts->type == CTS_TYPE_USER_SETTINGS) 2215 && (cpi.hba_inquiry & PI_WIDE_16) != 0) { 2216 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2217 break; 2218 } 2219 /* Fall Through to 8-bit */ 2220 default: /* New bus width?? */ 2221 case MSG_EXT_WDTR_BUS_8_BIT: 2222 /* All targets can do this */ 2223 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2224 break; 2225 } 2226 2227 spi3caps = cpi.xport_specific.spi.ppr_options; 2228 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0 2229 && cts->type == CTS_TYPE_CURRENT_SETTINGS) 2230 spi3caps &= inq_data->spi3data; 2231 2232 if ((spi3caps & SID_SPI_CLOCK_DT) == 0) 2233 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ; 2234 2235 if ((spi3caps & SID_SPI_IUS) == 0) 2236 spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ; 2237 2238 if ((spi3caps & SID_SPI_QAS) == 0) 2239 spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ; 2240 2241 /* No SPI Transfer settings are allowed unless we are wide */ 2242 if (spi->bus_width == 0) 2243 spi->ppr_options = 0; 2244 2245 if ((spi->valid & CTS_SPI_VALID_DISC) 2246 && ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0)) { 2247 /* 2248 * Can't tag queue without disconnection. 2249 */ 2250 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 2251 scsi->valid |= CTS_SCSI_VALID_TQ; 2252 } 2253 2254 /* 2255 * If we are currently performing tagged transactions to 2256 * this device and want to change its negotiation parameters, 2257 * go non-tagged for a bit to give the controller a chance to 2258 * negotiate unhampered by tag messages. 2259 */ 2260 if (cts->type == CTS_TYPE_CURRENT_SETTINGS 2261 && (device->inq_flags & SID_CmdQue) != 0 2262 && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0 2263 && (spi->flags & (CTS_SPI_VALID_SYNC_RATE| 2264 CTS_SPI_VALID_SYNC_OFFSET| 2265 CTS_SPI_VALID_BUS_WIDTH)) != 0) 2266 scsi_toggle_tags(cts->ccb_h.path); 2267 } 2268 2269 if (cts->type == CTS_TYPE_CURRENT_SETTINGS 2270 && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) { 2271 int device_tagenb; 2272 2273 /* 2274 * If we are transitioning from tags to no-tags or 2275 * vice-versa, we need to carefully freeze and restart 2276 * the queue so that we don't overlap tagged and non-tagged 2277 * commands. We also temporarily stop tags if there is 2278 * a change in transfer negotiation settings to allow 2279 * "tag-less" negotiation. 2280 */ 2281 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 2282 || (device->inq_flags & SID_CmdQue) != 0) 2283 device_tagenb = TRUE; 2284 else 2285 device_tagenb = FALSE; 2286 2287 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0 2288 && device_tagenb == FALSE) 2289 || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0 2290 && device_tagenb == TRUE)) { 2291 2292 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) { 2293 /* 2294 * Delay change to use tags until after a 2295 * few commands have gone to this device so 2296 * the controller has time to perform transfer 2297 * negotiations without tagged messages getting 2298 * in the way. 2299 */ 2300 device->tag_delay_count = CAM_TAG_DELAY_COUNT; 2301 device->flags |= CAM_DEV_TAG_AFTER_COUNT; 2302 } else { 2303 xpt_stop_tags(cts->ccb_h.path); 2304 } 2305 } 2306 } 2307 if (async_update == FALSE) 2308 (*(sim->sim_action))(sim, (union ccb *)cts); 2309 } 2310 2311 static void 2312 scsi_toggle_tags(struct cam_path *path) 2313 { 2314 struct cam_ed *dev; 2315 2316 /* 2317 * Give controllers a chance to renegotiate 2318 * before starting tag operations. We 2319 * "toggle" tagged queuing off then on 2320 * which causes the tag enable command delay 2321 * counter to come into effect. 2322 */ 2323 dev = path->device; 2324 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 2325 || ((dev->inq_flags & SID_CmdQue) != 0 2326 && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) { 2327 struct ccb_trans_settings cts; 2328 2329 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE); 2330 cts.protocol = PROTO_SCSI; 2331 cts.protocol_version = PROTO_VERSION_UNSPECIFIED; 2332 cts.transport = XPORT_UNSPECIFIED; 2333 cts.transport_version = XPORT_VERSION_UNSPECIFIED; 2334 cts.proto_specific.scsi.flags = 0; 2335 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ; 2336 scsi_set_transfer_settings(&cts, path->device, 2337 /*async_update*/TRUE); 2338 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB; 2339 scsi_set_transfer_settings(&cts, path->device, 2340 /*async_update*/TRUE); 2341 } 2342 } 2343 2344 /* 2345 * Handle any per-device event notifications that require action by the XPT. 2346 */ 2347 static void 2348 scsi_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target, 2349 struct cam_ed *device, void *async_arg) 2350 { 2351 cam_status status; 2352 struct cam_path newpath; 2353 2354 /* 2355 * We only need to handle events for real devices. 2356 */ 2357 if (target->target_id == CAM_TARGET_WILDCARD 2358 || device->lun_id == CAM_LUN_WILDCARD) 2359 return; 2360 2361 /* 2362 * We need our own path with wildcards expanded to 2363 * handle certain types of events. 2364 */ 2365 if ((async_code == AC_SENT_BDR) 2366 || (async_code == AC_BUS_RESET) 2367 || (async_code == AC_INQ_CHANGED)) 2368 status = xpt_compile_path(&newpath, NULL, 2369 bus->path_id, 2370 target->target_id, 2371 device->lun_id); 2372 else 2373 status = CAM_REQ_CMP_ERR; 2374 2375 if (status == CAM_REQ_CMP) { 2376 2377 /* 2378 * Allow transfer negotiation to occur in a 2379 * tag free environment and after settle delay. 2380 */ 2381 if (async_code == AC_SENT_BDR 2382 || async_code == AC_BUS_RESET) { 2383 cam_freeze_devq(&newpath); 2384 cam_release_devq(&newpath, 2385 RELSIM_RELEASE_AFTER_TIMEOUT, 2386 /*reduction*/0, 2387 /*timeout*/scsi_delay, 2388 /*getcount_only*/0); 2389 scsi_toggle_tags(&newpath); 2390 } 2391 2392 if (async_code == AC_INQ_CHANGED) { 2393 /* 2394 * We've sent a start unit command, or 2395 * something similar to a device that 2396 * may have caused its inquiry data to 2397 * change. So we re-scan the device to 2398 * refresh the inquiry data for it. 2399 */ 2400 scsi_scan_lun(newpath.periph, &newpath, 2401 CAM_EXPECT_INQ_CHANGE, NULL); 2402 } 2403 xpt_release_path(&newpath); 2404 } else if (async_code == AC_LOST_DEVICE && 2405 (device->flags & CAM_DEV_UNCONFIGURED) == 0) { 2406 device->flags |= CAM_DEV_UNCONFIGURED; 2407 xpt_release_device(device); 2408 } else if (async_code == AC_TRANSFER_NEG) { 2409 struct ccb_trans_settings *settings; 2410 2411 settings = (struct ccb_trans_settings *)async_arg; 2412 scsi_set_transfer_settings(settings, device, 2413 /*async_update*/TRUE); 2414 } 2415 } 2416 2417