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 probeschedule(periph); 620 return(CAM_REQ_CMP); 621 } 622 623 static void 624 probeschedule(struct cam_periph *periph) 625 { 626 struct ccb_pathinq cpi; 627 union ccb *ccb; 628 probe_softc *softc; 629 630 softc = (probe_softc *)periph->softc; 631 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs); 632 633 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 634 cpi.ccb_h.func_code = XPT_PATH_INQ; 635 xpt_action((union ccb *)&cpi); 636 637 /* 638 * If a device has gone away and another device, or the same one, 639 * is back in the same place, it should have a unit attention 640 * condition pending. It will not report the unit attention in 641 * response to an inquiry, which may leave invalid transfer 642 * negotiations in effect. The TUR will reveal the unit attention 643 * condition. Only send the TUR for lun 0, since some devices 644 * will get confused by commands other than inquiry to non-existent 645 * luns. If you think a device has gone away start your scan from 646 * lun 0. This will insure that any bogus transfer settings are 647 * invalidated. 648 * 649 * If we haven't seen the device before and the controller supports 650 * some kind of transfer negotiation, negotiate with the first 651 * sent command if no bus reset was performed at startup. This 652 * ensures that the device is not confused by transfer negotiation 653 * settings left over by loader or BIOS action. 654 */ 655 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0) 656 && (ccb->ccb_h.target_lun == 0)) { 657 PROBE_SET_ACTION(softc, PROBE_TUR); 658 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0 659 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) { 660 proberequestdefaultnegotiation(periph); 661 PROBE_SET_ACTION(softc, PROBE_INQUIRY); 662 } else { 663 PROBE_SET_ACTION(softc, PROBE_INQUIRY); 664 } 665 666 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE) 667 softc->flags |= PROBE_NO_ANNOUNCE; 668 else 669 softc->flags &= ~PROBE_NO_ANNOUNCE; 670 671 xpt_schedule(periph, ccb->ccb_h.pinfo.priority); 672 } 673 674 static void 675 probestart(struct cam_periph *periph, union ccb *start_ccb) 676 { 677 /* Probe the device that our peripheral driver points to */ 678 struct ccb_scsiio *csio; 679 probe_softc *softc; 680 681 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n")); 682 683 softc = (probe_softc *)periph->softc; 684 csio = &start_ccb->csio; 685 686 switch (softc->action) { 687 case PROBE_TUR: 688 case PROBE_TUR_FOR_NEGOTIATION: 689 case PROBE_DV_EXIT: 690 { 691 scsi_test_unit_ready(csio, 692 /*retries*/10, 693 probedone, 694 MSG_SIMPLE_Q_TAG, 695 SSD_FULL_SIZE, 696 /*timeout*/60000); 697 break; 698 } 699 case PROBE_INQUIRY: 700 case PROBE_FULL_INQUIRY: 701 case PROBE_INQUIRY_BASIC_DV1: 702 case PROBE_INQUIRY_BASIC_DV2: 703 { 704 u_int inquiry_len; 705 struct scsi_inquiry_data *inq_buf; 706 707 inq_buf = &periph->path->device->inq_data; 708 709 /* 710 * If the device is currently configured, we calculate an 711 * MD5 checksum of the inquiry data, and if the serial number 712 * length is greater than 0, add the serial number data 713 * into the checksum as well. Once the inquiry and the 714 * serial number check finish, we attempt to figure out 715 * whether we still have the same device. 716 */ 717 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) { 718 719 MD5Init(&softc->context); 720 MD5Update(&softc->context, (unsigned char *)inq_buf, 721 sizeof(struct scsi_inquiry_data)); 722 softc->flags |= PROBE_INQUIRY_CKSUM; 723 if (periph->path->device->serial_num_len > 0) { 724 MD5Update(&softc->context, 725 periph->path->device->serial_num, 726 periph->path->device->serial_num_len); 727 softc->flags |= PROBE_SERIAL_CKSUM; 728 } 729 MD5Final(softc->digest, &softc->context); 730 } 731 732 if (softc->action == PROBE_INQUIRY) 733 inquiry_len = SHORT_INQUIRY_LENGTH; 734 else 735 inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf); 736 737 /* 738 * Some parallel SCSI devices fail to send an 739 * ignore wide residue message when dealing with 740 * odd length inquiry requests. Round up to be 741 * safe. 742 */ 743 inquiry_len = roundup2(inquiry_len, 2); 744 745 if (softc->action == PROBE_INQUIRY_BASIC_DV1 746 || softc->action == PROBE_INQUIRY_BASIC_DV2) { 747 inq_buf = malloc(inquiry_len, M_CAMXPT, M_NOWAIT); 748 } 749 if (inq_buf == NULL) { 750 xpt_print(periph->path, "malloc failure- skipping Basic" 751 "Domain Validation\n"); 752 PROBE_SET_ACTION(softc, PROBE_DV_EXIT); 753 scsi_test_unit_ready(csio, 754 /*retries*/4, 755 probedone, 756 MSG_SIMPLE_Q_TAG, 757 SSD_FULL_SIZE, 758 /*timeout*/60000); 759 break; 760 } 761 scsi_inquiry(csio, 762 /*retries*/4, 763 probedone, 764 MSG_SIMPLE_Q_TAG, 765 (u_int8_t *)inq_buf, 766 inquiry_len, 767 /*evpd*/FALSE, 768 /*page_code*/0, 769 SSD_MIN_SIZE, 770 /*timeout*/60 * 1000); 771 break; 772 } 773 case PROBE_MODE_SENSE: 774 { 775 void *mode_buf; 776 int mode_buf_len; 777 778 mode_buf_len = sizeof(struct scsi_mode_header_6) 779 + sizeof(struct scsi_mode_blk_desc) 780 + sizeof(struct scsi_control_page); 781 mode_buf = malloc(mode_buf_len, M_CAMXPT, M_NOWAIT); 782 if (mode_buf != NULL) { 783 scsi_mode_sense(csio, 784 /*retries*/4, 785 probedone, 786 MSG_SIMPLE_Q_TAG, 787 /*dbd*/FALSE, 788 SMS_PAGE_CTRL_CURRENT, 789 SMS_CONTROL_MODE_PAGE, 790 mode_buf, 791 mode_buf_len, 792 SSD_FULL_SIZE, 793 /*timeout*/60000); 794 break; 795 } 796 xpt_print(periph->path, "Unable to mode sense control page - " 797 "malloc failure\n"); 798 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM_0); 799 } 800 /* FALLTHROUGH */ 801 case PROBE_SERIAL_NUM_0: 802 { 803 struct scsi_vpd_supported_page_list *vpd_list = NULL; 804 struct cam_ed *device; 805 806 device = periph->path->device; 807 if ((SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOSERIAL) == 0) { 808 vpd_list = malloc(sizeof(*vpd_list), M_CAMXPT, 809 M_NOWAIT | M_ZERO); 810 } 811 812 if (vpd_list != NULL) { 813 scsi_inquiry(csio, 814 /*retries*/4, 815 probedone, 816 MSG_SIMPLE_Q_TAG, 817 (u_int8_t *)vpd_list, 818 sizeof(*vpd_list), 819 /*evpd*/TRUE, 820 SVPD_SUPPORTED_PAGE_LIST, 821 SSD_MIN_SIZE, 822 /*timeout*/60 * 1000); 823 break; 824 } 825 /* 826 * We'll have to do without, let our probedone 827 * routine finish up for us. 828 */ 829 start_ccb->csio.data_ptr = NULL; 830 probedone(periph, start_ccb); 831 return; 832 } 833 case PROBE_SERIAL_NUM_1: 834 { 835 struct scsi_vpd_unit_serial_number *serial_buf; 836 struct cam_ed* device; 837 838 serial_buf = NULL; 839 device = periph->path->device; 840 if (device->serial_num != NULL) { 841 free(device->serial_num, M_CAMXPT); 842 device->serial_num = NULL; 843 device->serial_num_len = 0; 844 } 845 846 serial_buf = (struct scsi_vpd_unit_serial_number *) 847 malloc(sizeof(*serial_buf), M_CAMXPT, M_NOWAIT|M_ZERO); 848 849 if (serial_buf != NULL) { 850 scsi_inquiry(csio, 851 /*retries*/4, 852 probedone, 853 MSG_SIMPLE_Q_TAG, 854 (u_int8_t *)serial_buf, 855 sizeof(*serial_buf), 856 /*evpd*/TRUE, 857 SVPD_UNIT_SERIAL_NUMBER, 858 SSD_MIN_SIZE, 859 /*timeout*/60 * 1000); 860 break; 861 } 862 /* 863 * We'll have to do without, let our probedone 864 * routine finish up for us. 865 */ 866 start_ccb->csio.data_ptr = NULL; 867 probedone(periph, start_ccb); 868 return; 869 } 870 case PROBE_INVALID: 871 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 872 ("probestart: invalid action state\n")); 873 default: 874 break; 875 } 876 xpt_action(start_ccb); 877 } 878 879 static void 880 proberequestdefaultnegotiation(struct cam_periph *periph) 881 { 882 struct ccb_trans_settings cts; 883 884 xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 885 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 886 cts.type = CTS_TYPE_USER_SETTINGS; 887 xpt_action((union ccb *)&cts); 888 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 889 return; 890 } 891 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS; 892 cts.type = CTS_TYPE_CURRENT_SETTINGS; 893 xpt_action((union ccb *)&cts); 894 } 895 896 /* 897 * Backoff Negotiation Code- only pertinent for SPI devices. 898 */ 899 static int 900 proberequestbackoff(struct cam_periph *periph, struct cam_ed *device) 901 { 902 struct ccb_trans_settings cts; 903 struct ccb_trans_settings_spi *spi; 904 905 memset(&cts, 0, sizeof (cts)); 906 xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 907 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 908 cts.type = CTS_TYPE_CURRENT_SETTINGS; 909 xpt_action((union ccb *)&cts); 910 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 911 if (bootverbose) { 912 xpt_print(periph->path, 913 "failed to get current device settings\n"); 914 } 915 return (0); 916 } 917 if (cts.transport != XPORT_SPI) { 918 if (bootverbose) { 919 xpt_print(periph->path, "not SPI transport\n"); 920 } 921 return (0); 922 } 923 spi = &cts.xport_specific.spi; 924 925 /* 926 * We cannot renegotiate sync rate if we don't have one. 927 */ 928 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) { 929 if (bootverbose) { 930 xpt_print(periph->path, "no sync rate known\n"); 931 } 932 return (0); 933 } 934 935 /* 936 * We'll assert that we don't have to touch PPR options- the 937 * SIM will see what we do with period and offset and adjust 938 * the PPR options as appropriate. 939 */ 940 941 /* 942 * A sync rate with unknown or zero offset is nonsensical. 943 * A sync period of zero means Async. 944 */ 945 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0 946 || spi->sync_offset == 0 || spi->sync_period == 0) { 947 if (bootverbose) { 948 xpt_print(periph->path, "no sync rate available\n"); 949 } 950 return (0); 951 } 952 953 if (device->flags & CAM_DEV_DV_HIT_BOTTOM) { 954 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 955 ("hit async: giving up on DV\n")); 956 return (0); 957 } 958 959 960 /* 961 * Jump sync_period up by one, but stop at 5MHz and fall back to Async. 962 * We don't try to remember 'last' settings to see if the SIM actually 963 * gets into the speed we want to set. We check on the SIM telling 964 * us that a requested speed is bad, but otherwise don't try and 965 * check the speed due to the asynchronous and handshake nature 966 * of speed setting. 967 */ 968 spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET; 969 for (;;) { 970 spi->sync_period++; 971 if (spi->sync_period >= 0xf) { 972 spi->sync_period = 0; 973 spi->sync_offset = 0; 974 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 975 ("setting to async for DV\n")); 976 /* 977 * Once we hit async, we don't want to try 978 * any more settings. 979 */ 980 device->flags |= CAM_DEV_DV_HIT_BOTTOM; 981 } else if (bootverbose) { 982 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 983 ("DV: period 0x%x\n", spi->sync_period)); 984 printf("setting period to 0x%x\n", spi->sync_period); 985 } 986 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS; 987 cts.type = CTS_TYPE_CURRENT_SETTINGS; 988 xpt_action((union ccb *)&cts); 989 if ((cts.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 990 break; 991 } 992 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 993 ("DV: failed to set period 0x%x\n", spi->sync_period)); 994 if (spi->sync_period == 0) { 995 return (0); 996 } 997 } 998 return (1); 999 } 1000 1001 static void 1002 probedone(struct cam_periph *periph, union ccb *done_ccb) 1003 { 1004 probe_softc *softc; 1005 struct cam_path *path; 1006 u_int32_t priority; 1007 1008 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n")); 1009 1010 softc = (probe_softc *)periph->softc; 1011 path = done_ccb->ccb_h.path; 1012 priority = done_ccb->ccb_h.pinfo.priority; 1013 1014 switch (softc->action) { 1015 case PROBE_TUR: 1016 { 1017 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1018 1019 if (cam_periph_error(done_ccb, 0, 1020 SF_NO_PRINT, NULL) == ERESTART) 1021 return; 1022 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1023 /* Don't wedge the queue */ 1024 xpt_release_devq(done_ccb->ccb_h.path, 1025 /*count*/1, 1026 /*run_queue*/TRUE); 1027 } 1028 PROBE_SET_ACTION(softc, PROBE_INQUIRY); 1029 xpt_release_ccb(done_ccb); 1030 xpt_schedule(periph, priority); 1031 return; 1032 } 1033 case PROBE_INQUIRY: 1034 case PROBE_FULL_INQUIRY: 1035 { 1036 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 1037 struct scsi_inquiry_data *inq_buf; 1038 u_int8_t periph_qual; 1039 1040 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID; 1041 inq_buf = &path->device->inq_data; 1042 1043 periph_qual = SID_QUAL(inq_buf); 1044 1045 switch(periph_qual) { 1046 case SID_QUAL_LU_CONNECTED: 1047 { 1048 u_int8_t len; 1049 1050 /* 1051 * We conservatively request only 1052 * SHORT_INQUIRY_LEN bytes of inquiry 1053 * information during our first try 1054 * at sending an INQUIRY. If the device 1055 * has more information to give, 1056 * perform a second request specifying 1057 * the amount of information the device 1058 * is willing to give. 1059 */ 1060 len = inq_buf->additional_length 1061 + offsetof(struct scsi_inquiry_data, 1062 additional_length) + 1; 1063 if (softc->action == PROBE_INQUIRY 1064 && len > SHORT_INQUIRY_LENGTH) { 1065 PROBE_SET_ACTION(softc, PROBE_FULL_INQUIRY); 1066 xpt_release_ccb(done_ccb); 1067 xpt_schedule(periph, priority); 1068 return; 1069 } 1070 1071 scsi_find_quirk(path->device); 1072 1073 scsi_devise_transport(path); 1074 if (INQ_DATA_TQ_ENABLED(inq_buf)) 1075 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE); 1076 else 1077 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM_0); 1078 1079 if (path->device->flags & CAM_DEV_UNCONFIGURED) { 1080 path->device->flags &= ~CAM_DEV_UNCONFIGURED; 1081 xpt_acquire_device(path->device); 1082 } 1083 xpt_release_ccb(done_ccb); 1084 xpt_schedule(periph, priority); 1085 return; 1086 } 1087 default: 1088 break; 1089 } 1090 } else if (cam_periph_error(done_ccb, 0, 1091 done_ccb->ccb_h.target_lun > 0 1092 ? SF_RETRY_UA|SF_QUIET_IR 1093 : SF_RETRY_UA, 1094 &softc->saved_ccb) == ERESTART) { 1095 return; 1096 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1097 /* Don't wedge the queue */ 1098 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 1099 /*run_queue*/TRUE); 1100 } 1101 /* 1102 * If we get to this point, we got an error status back 1103 * from the inquiry and the error status doesn't require 1104 * automatically retrying the command. Therefore, the 1105 * inquiry failed. If we had inquiry information before 1106 * for this device, but this latest inquiry command failed, 1107 * the device has probably gone away. If this device isn't 1108 * already marked unconfigured, notify the peripheral 1109 * drivers that this device is no more. 1110 */ 1111 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0) 1112 /* Send the async notification. */ 1113 xpt_async(AC_LOST_DEVICE, path, NULL); 1114 1115 xpt_release_ccb(done_ccb); 1116 break; 1117 } 1118 case PROBE_MODE_SENSE: 1119 { 1120 struct ccb_scsiio *csio; 1121 struct scsi_mode_header_6 *mode_hdr; 1122 1123 csio = &done_ccb->csio; 1124 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr; 1125 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 1126 struct scsi_control_page *page; 1127 u_int8_t *offset; 1128 1129 offset = ((u_int8_t *)&mode_hdr[1]) 1130 + mode_hdr->blk_desc_len; 1131 page = (struct scsi_control_page *)offset; 1132 path->device->queue_flags = page->queue_flags; 1133 } else if (cam_periph_error(done_ccb, 0, 1134 SF_RETRY_UA|SF_NO_PRINT, 1135 &softc->saved_ccb) == ERESTART) { 1136 return; 1137 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1138 /* Don't wedge the queue */ 1139 xpt_release_devq(done_ccb->ccb_h.path, 1140 /*count*/1, /*run_queue*/TRUE); 1141 } 1142 xpt_release_ccb(done_ccb); 1143 free(mode_hdr, M_CAMXPT); 1144 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM_0); 1145 xpt_schedule(periph, priority); 1146 return; 1147 } 1148 case PROBE_SERIAL_NUM_0: 1149 { 1150 struct ccb_scsiio *csio; 1151 struct scsi_vpd_supported_page_list *page_list; 1152 int length, serialnum_supported, i; 1153 1154 serialnum_supported = 0; 1155 csio = &done_ccb->csio; 1156 page_list = 1157 (struct scsi_vpd_supported_page_list *)csio->data_ptr; 1158 1159 if (page_list == NULL) { 1160 /* 1161 * Don't process the command as it was never sent 1162 */ 1163 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP 1164 && (page_list->length > 0)) { 1165 length = min(page_list->length, 1166 SVPD_SUPPORTED_PAGES_SIZE); 1167 for (i = 0; i < length; i++) { 1168 if (page_list->list[i] == 1169 SVPD_UNIT_SERIAL_NUMBER) { 1170 serialnum_supported = 1; 1171 break; 1172 } 1173 } 1174 } else if (cam_periph_error(done_ccb, 0, 1175 SF_RETRY_UA|SF_NO_PRINT, 1176 &softc->saved_ccb) == ERESTART) { 1177 return; 1178 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1179 /* Don't wedge the queue */ 1180 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 1181 /*run_queue*/TRUE); 1182 } 1183 1184 if (page_list != NULL) 1185 free(page_list, M_CAMXPT); 1186 1187 if (serialnum_supported) { 1188 xpt_release_ccb(done_ccb); 1189 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM_1); 1190 xpt_schedule(periph, priority); 1191 return; 1192 } 1193 1194 csio->data_ptr = NULL; 1195 /* FALLTHROUGH */ 1196 } 1197 1198 case PROBE_SERIAL_NUM_1: 1199 { 1200 struct ccb_scsiio *csio; 1201 struct scsi_vpd_unit_serial_number *serial_buf; 1202 u_int32_t priority; 1203 int changed; 1204 int have_serialnum; 1205 1206 changed = 1; 1207 have_serialnum = 0; 1208 csio = &done_ccb->csio; 1209 priority = done_ccb->ccb_h.pinfo.priority; 1210 serial_buf = 1211 (struct scsi_vpd_unit_serial_number *)csio->data_ptr; 1212 1213 /* Clean up from previous instance of this device */ 1214 if (path->device->serial_num != NULL) { 1215 free(path->device->serial_num, M_CAMXPT); 1216 path->device->serial_num = NULL; 1217 path->device->serial_num_len = 0; 1218 } 1219 1220 if (serial_buf == NULL) { 1221 /* 1222 * Don't process the command as it was never sent 1223 */ 1224 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP 1225 && (serial_buf->length > 0)) { 1226 1227 have_serialnum = 1; 1228 path->device->serial_num = 1229 (u_int8_t *)malloc((serial_buf->length + 1), 1230 M_CAMXPT, M_NOWAIT); 1231 if (path->device->serial_num != NULL) { 1232 bcopy(serial_buf->serial_num, 1233 path->device->serial_num, 1234 serial_buf->length); 1235 path->device->serial_num_len = 1236 serial_buf->length; 1237 path->device->serial_num[serial_buf->length] 1238 = '\0'; 1239 } 1240 } else if (cam_periph_error(done_ccb, 0, 1241 SF_RETRY_UA|SF_NO_PRINT, 1242 &softc->saved_ccb) == ERESTART) { 1243 return; 1244 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1245 /* Don't wedge the queue */ 1246 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 1247 /*run_queue*/TRUE); 1248 } 1249 1250 /* 1251 * Let's see if we have seen this device before. 1252 */ 1253 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) { 1254 MD5_CTX context; 1255 u_int8_t digest[16]; 1256 1257 MD5Init(&context); 1258 1259 MD5Update(&context, 1260 (unsigned char *)&path->device->inq_data, 1261 sizeof(struct scsi_inquiry_data)); 1262 1263 if (have_serialnum) 1264 MD5Update(&context, serial_buf->serial_num, 1265 serial_buf->length); 1266 1267 MD5Final(digest, &context); 1268 if (bcmp(softc->digest, digest, 16) == 0) 1269 changed = 0; 1270 1271 /* 1272 * XXX Do we need to do a TUR in order to ensure 1273 * that the device really hasn't changed??? 1274 */ 1275 if ((changed != 0) 1276 && ((softc->flags & PROBE_NO_ANNOUNCE) == 0)) 1277 xpt_async(AC_LOST_DEVICE, path, NULL); 1278 } 1279 if (serial_buf != NULL) 1280 free(serial_buf, M_CAMXPT); 1281 1282 if (changed != 0) { 1283 /* 1284 * Now that we have all the necessary 1285 * information to safely perform transfer 1286 * negotiations... Controllers don't perform 1287 * any negotiation or tagged queuing until 1288 * after the first XPT_SET_TRAN_SETTINGS ccb is 1289 * received. So, on a new device, just retrieve 1290 * the user settings, and set them as the current 1291 * settings to set the device up. 1292 */ 1293 proberequestdefaultnegotiation(periph); 1294 xpt_release_ccb(done_ccb); 1295 1296 /* 1297 * Perform a TUR to allow the controller to 1298 * perform any necessary transfer negotiation. 1299 */ 1300 PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION); 1301 xpt_schedule(periph, priority); 1302 return; 1303 } 1304 xpt_release_ccb(done_ccb); 1305 break; 1306 } 1307 case PROBE_TUR_FOR_NEGOTIATION: 1308 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1309 DELAY(500000); 1310 if (cam_periph_error(done_ccb, 0, SF_RETRY_UA, 1311 NULL) == ERESTART) 1312 return; 1313 } 1314 /* FALLTHROUGH */ 1315 case PROBE_DV_EXIT: 1316 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1317 /* Don't wedge the queue */ 1318 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 1319 /*run_queue*/TRUE); 1320 } 1321 /* 1322 * Do Domain Validation for lun 0 on devices that claim 1323 * to support Synchronous Transfer modes. 1324 */ 1325 if (softc->action == PROBE_TUR_FOR_NEGOTIATION 1326 && done_ccb->ccb_h.target_lun == 0 1327 && (path->device->inq_data.flags & SID_Sync) != 0 1328 && (path->device->flags & CAM_DEV_IN_DV) == 0) { 1329 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1330 ("Begin Domain Validation\n")); 1331 path->device->flags |= CAM_DEV_IN_DV; 1332 xpt_release_ccb(done_ccb); 1333 PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV1); 1334 xpt_schedule(periph, priority); 1335 return; 1336 } 1337 if (softc->action == PROBE_DV_EXIT) { 1338 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1339 ("Leave Domain Validation\n")); 1340 } 1341 if (path->device->flags & CAM_DEV_UNCONFIGURED) { 1342 path->device->flags &= ~CAM_DEV_UNCONFIGURED; 1343 xpt_acquire_device(path->device); 1344 } 1345 path->device->flags &= 1346 ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM); 1347 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) { 1348 /* Inform the XPT that a new device has been found */ 1349 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE; 1350 xpt_action(done_ccb); 1351 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path, 1352 done_ccb); 1353 } 1354 xpt_release_ccb(done_ccb); 1355 break; 1356 case PROBE_INQUIRY_BASIC_DV1: 1357 case PROBE_INQUIRY_BASIC_DV2: 1358 { 1359 struct scsi_inquiry_data *nbuf; 1360 struct ccb_scsiio *csio; 1361 1362 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1363 /* Don't wedge the queue */ 1364 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 1365 /*run_queue*/TRUE); 1366 } 1367 csio = &done_ccb->csio; 1368 nbuf = (struct scsi_inquiry_data *)csio->data_ptr; 1369 if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) { 1370 xpt_print(path, 1371 "inquiry data fails comparison at DV%d step\n", 1372 softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2); 1373 if (proberequestbackoff(periph, path->device)) { 1374 path->device->flags &= ~CAM_DEV_IN_DV; 1375 PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION); 1376 } else { 1377 /* give up */ 1378 PROBE_SET_ACTION(softc, PROBE_DV_EXIT); 1379 } 1380 free(nbuf, M_CAMXPT); 1381 xpt_release_ccb(done_ccb); 1382 xpt_schedule(periph, priority); 1383 return; 1384 } 1385 free(nbuf, M_CAMXPT); 1386 if (softc->action == PROBE_INQUIRY_BASIC_DV1) { 1387 PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV2); 1388 xpt_release_ccb(done_ccb); 1389 xpt_schedule(periph, priority); 1390 return; 1391 } 1392 if (softc->action == PROBE_INQUIRY_BASIC_DV2) { 1393 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1394 ("Leave Domain Validation Successfully\n")); 1395 } 1396 if (path->device->flags & CAM_DEV_UNCONFIGURED) { 1397 path->device->flags &= ~CAM_DEV_UNCONFIGURED; 1398 xpt_acquire_device(path->device); 1399 } 1400 path->device->flags &= 1401 ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM); 1402 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) { 1403 /* Inform the XPT that a new device has been found */ 1404 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE; 1405 xpt_action(done_ccb); 1406 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path, 1407 done_ccb); 1408 } 1409 xpt_release_ccb(done_ccb); 1410 break; 1411 } 1412 case PROBE_INVALID: 1413 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_INFO, 1414 ("probedone: invalid action state\n")); 1415 default: 1416 break; 1417 } 1418 done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs); 1419 TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe); 1420 done_ccb->ccb_h.status = CAM_REQ_CMP; 1421 xpt_done(done_ccb); 1422 if (TAILQ_FIRST(&softc->request_ccbs) == NULL) { 1423 cam_periph_invalidate(periph); 1424 cam_periph_release_locked(periph); 1425 } else { 1426 probeschedule(periph); 1427 } 1428 } 1429 1430 static void 1431 probecleanup(struct cam_periph *periph) 1432 { 1433 free(periph->softc, M_CAMXPT); 1434 } 1435 1436 static void 1437 scsi_find_quirk(struct cam_ed *device) 1438 { 1439 struct scsi_quirk_entry *quirk; 1440 caddr_t match; 1441 1442 match = cam_quirkmatch((caddr_t)&device->inq_data, 1443 (caddr_t)scsi_quirk_table, 1444 sizeof(scsi_quirk_table) / 1445 sizeof(*scsi_quirk_table), 1446 sizeof(*scsi_quirk_table), scsi_inquiry_match); 1447 1448 if (match == NULL) 1449 panic("xpt_find_quirk: device didn't match wildcard entry!!"); 1450 1451 quirk = (struct scsi_quirk_entry *)match; 1452 device->quirk = quirk; 1453 device->mintags = quirk->mintags; 1454 device->maxtags = quirk->maxtags; 1455 } 1456 1457 static int 1458 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS) 1459 { 1460 int error, bool; 1461 1462 bool = cam_srch_hi; 1463 error = sysctl_handle_int(oidp, &bool, 0, req); 1464 if (error != 0 || req->newptr == NULL) 1465 return (error); 1466 if (bool == 0 || bool == 1) { 1467 cam_srch_hi = bool; 1468 return (0); 1469 } else { 1470 return (EINVAL); 1471 } 1472 } 1473 1474 typedef struct { 1475 union ccb *request_ccb; 1476 struct ccb_pathinq *cpi; 1477 int counter; 1478 } scsi_scan_bus_info; 1479 1480 /* 1481 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb. 1482 * As the scan progresses, scsi_scan_bus is used as the 1483 * callback on completion function. 1484 */ 1485 static void 1486 scsi_scan_bus(struct cam_periph *periph, union ccb *request_ccb) 1487 { 1488 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE, 1489 ("scsi_scan_bus\n")); 1490 switch (request_ccb->ccb_h.func_code) { 1491 case XPT_SCAN_BUS: 1492 { 1493 scsi_scan_bus_info *scan_info; 1494 union ccb *work_ccb; 1495 struct cam_path *path; 1496 u_int i; 1497 u_int max_target; 1498 u_int initiator_id; 1499 1500 /* Find out the characteristics of the bus */ 1501 work_ccb = xpt_alloc_ccb_nowait(); 1502 if (work_ccb == NULL) { 1503 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 1504 xpt_done(request_ccb); 1505 return; 1506 } 1507 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path, 1508 request_ccb->ccb_h.pinfo.priority); 1509 work_ccb->ccb_h.func_code = XPT_PATH_INQ; 1510 xpt_action(work_ccb); 1511 if (work_ccb->ccb_h.status != CAM_REQ_CMP) { 1512 request_ccb->ccb_h.status = work_ccb->ccb_h.status; 1513 xpt_free_ccb(work_ccb); 1514 xpt_done(request_ccb); 1515 return; 1516 } 1517 1518 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) { 1519 /* 1520 * Can't scan the bus on an adapter that 1521 * cannot perform the initiator role. 1522 */ 1523 request_ccb->ccb_h.status = CAM_REQ_CMP; 1524 xpt_free_ccb(work_ccb); 1525 xpt_done(request_ccb); 1526 return; 1527 } 1528 1529 /* Save some state for use while we probe for devices */ 1530 scan_info = (scsi_scan_bus_info *) 1531 malloc(sizeof(scsi_scan_bus_info), M_CAMXPT, M_NOWAIT); 1532 if (scan_info == NULL) { 1533 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 1534 xpt_done(request_ccb); 1535 return; 1536 } 1537 scan_info->request_ccb = request_ccb; 1538 scan_info->cpi = &work_ccb->cpi; 1539 1540 /* Cache on our stack so we can work asynchronously */ 1541 max_target = scan_info->cpi->max_target; 1542 initiator_id = scan_info->cpi->initiator_id; 1543 1544 1545 /* 1546 * We can scan all targets in parallel, or do it sequentially. 1547 */ 1548 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) { 1549 max_target = 0; 1550 scan_info->counter = 0; 1551 } else { 1552 scan_info->counter = scan_info->cpi->max_target + 1; 1553 if (scan_info->cpi->initiator_id < scan_info->counter) { 1554 scan_info->counter--; 1555 } 1556 } 1557 1558 for (i = 0; i <= max_target; i++) { 1559 cam_status status; 1560 if (i == initiator_id) 1561 continue; 1562 1563 status = xpt_create_path(&path, xpt_periph, 1564 request_ccb->ccb_h.path_id, 1565 i, 0); 1566 if (status != CAM_REQ_CMP) { 1567 printf("scsi_scan_bus: xpt_create_path failed" 1568 " with status %#x, bus scan halted\n", 1569 status); 1570 free(scan_info, M_CAMXPT); 1571 request_ccb->ccb_h.status = status; 1572 xpt_free_ccb(work_ccb); 1573 xpt_done(request_ccb); 1574 break; 1575 } 1576 work_ccb = xpt_alloc_ccb_nowait(); 1577 if (work_ccb == NULL) { 1578 xpt_free_ccb((union ccb *)scan_info->cpi); 1579 free(scan_info, M_CAMXPT); 1580 xpt_free_path(path); 1581 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 1582 xpt_done(request_ccb); 1583 break; 1584 } 1585 xpt_setup_ccb(&work_ccb->ccb_h, path, 1586 request_ccb->ccb_h.pinfo.priority); 1587 work_ccb->ccb_h.func_code = XPT_SCAN_LUN; 1588 work_ccb->ccb_h.cbfcnp = scsi_scan_bus; 1589 work_ccb->ccb_h.ppriv_ptr0 = scan_info; 1590 work_ccb->crcn.flags = request_ccb->crcn.flags; 1591 xpt_action(work_ccb); 1592 } 1593 break; 1594 } 1595 case XPT_SCAN_LUN: 1596 { 1597 cam_status status; 1598 struct cam_path *path; 1599 scsi_scan_bus_info *scan_info; 1600 path_id_t path_id; 1601 target_id_t target_id; 1602 lun_id_t lun_id; 1603 1604 /* Reuse the same CCB to query if a device was really found */ 1605 scan_info = (scsi_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0; 1606 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path, 1607 request_ccb->ccb_h.pinfo.priority); 1608 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE; 1609 1610 path_id = request_ccb->ccb_h.path_id; 1611 target_id = request_ccb->ccb_h.target_id; 1612 lun_id = request_ccb->ccb_h.target_lun; 1613 xpt_action(request_ccb); 1614 1615 if (request_ccb->ccb_h.status != CAM_REQ_CMP) { 1616 struct cam_ed *device; 1617 struct cam_et *target; 1618 int phl; 1619 1620 /* 1621 * If we already probed lun 0 successfully, or 1622 * we have additional configured luns on this 1623 * target that might have "gone away", go onto 1624 * the next lun. 1625 */ 1626 target = request_ccb->ccb_h.path->target; 1627 /* 1628 * We may touch devices that we don't 1629 * hold references too, so ensure they 1630 * don't disappear out from under us. 1631 * The target above is referenced by the 1632 * path in the request ccb. 1633 */ 1634 phl = 0; 1635 device = TAILQ_FIRST(&target->ed_entries); 1636 if (device != NULL) { 1637 phl = CAN_SRCH_HI_SPARSE(device); 1638 if (device->lun_id == 0) 1639 device = TAILQ_NEXT(device, links); 1640 } 1641 if ((lun_id != 0) || (device != NULL)) { 1642 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl) 1643 lun_id++; 1644 } 1645 } else { 1646 struct cam_ed *device; 1647 1648 device = request_ccb->ccb_h.path->device; 1649 1650 if ((SCSI_QUIRK(device)->quirks & 1651 CAM_QUIRK_NOLUNS) == 0) { 1652 /* Try the next lun */ 1653 if (lun_id < (CAM_SCSI2_MAXLUN-1) 1654 || CAN_SRCH_HI_DENSE(device)) 1655 lun_id++; 1656 } 1657 } 1658 1659 /* 1660 * Free the current request path- we're done with it. 1661 */ 1662 xpt_free_path(request_ccb->ccb_h.path); 1663 1664 /* 1665 * Check to see if we scan any further luns. 1666 */ 1667 if (lun_id == request_ccb->ccb_h.target_lun 1668 || lun_id > scan_info->cpi->max_lun) { 1669 int done; 1670 1671 hop_again: 1672 done = 0; 1673 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) { 1674 scan_info->counter++; 1675 if (scan_info->counter == 1676 scan_info->cpi->initiator_id) { 1677 scan_info->counter++; 1678 } 1679 if (scan_info->counter >= 1680 scan_info->cpi->max_target+1) { 1681 done = 1; 1682 } 1683 } else { 1684 scan_info->counter--; 1685 if (scan_info->counter == 0) { 1686 done = 1; 1687 } 1688 } 1689 if (done) { 1690 xpt_free_ccb(request_ccb); 1691 xpt_free_ccb((union ccb *)scan_info->cpi); 1692 request_ccb = scan_info->request_ccb; 1693 free(scan_info, M_CAMXPT); 1694 request_ccb->ccb_h.status = CAM_REQ_CMP; 1695 xpt_done(request_ccb); 1696 break; 1697 } 1698 1699 if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) { 1700 xpt_free_ccb(request_ccb); 1701 break; 1702 } 1703 status = xpt_create_path(&path, xpt_periph, 1704 scan_info->request_ccb->ccb_h.path_id, 1705 scan_info->counter, 0); 1706 if (status != CAM_REQ_CMP) { 1707 printf("scsi_scan_bus: xpt_create_path failed" 1708 " with status %#x, bus scan halted\n", 1709 status); 1710 xpt_free_ccb(request_ccb); 1711 xpt_free_ccb((union ccb *)scan_info->cpi); 1712 request_ccb = scan_info->request_ccb; 1713 free(scan_info, M_CAMXPT); 1714 request_ccb->ccb_h.status = status; 1715 xpt_done(request_ccb); 1716 break; 1717 } 1718 xpt_setup_ccb(&request_ccb->ccb_h, path, 1719 request_ccb->ccb_h.pinfo.priority); 1720 request_ccb->ccb_h.func_code = XPT_SCAN_LUN; 1721 request_ccb->ccb_h.cbfcnp = scsi_scan_bus; 1722 request_ccb->ccb_h.ppriv_ptr0 = scan_info; 1723 request_ccb->crcn.flags = 1724 scan_info->request_ccb->crcn.flags; 1725 } else { 1726 status = xpt_create_path(&path, xpt_periph, 1727 path_id, target_id, lun_id); 1728 if (status != CAM_REQ_CMP) { 1729 printf("scsi_scan_bus: xpt_create_path failed " 1730 "with status %#x, halting LUN scan\n", 1731 status); 1732 goto hop_again; 1733 } 1734 xpt_setup_ccb(&request_ccb->ccb_h, path, 1735 request_ccb->ccb_h.pinfo.priority); 1736 request_ccb->ccb_h.func_code = XPT_SCAN_LUN; 1737 request_ccb->ccb_h.cbfcnp = scsi_scan_bus; 1738 request_ccb->ccb_h.ppriv_ptr0 = scan_info; 1739 request_ccb->crcn.flags = 1740 scan_info->request_ccb->crcn.flags; 1741 } 1742 xpt_action(request_ccb); 1743 break; 1744 } 1745 default: 1746 break; 1747 } 1748 } 1749 1750 static void 1751 scsi_scan_lun(struct cam_periph *periph, struct cam_path *path, 1752 cam_flags flags, union ccb *request_ccb) 1753 { 1754 struct ccb_pathinq cpi; 1755 cam_status status; 1756 struct cam_path *new_path; 1757 struct cam_periph *old_periph; 1758 1759 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE, 1760 ("scsi_scan_lun\n")); 1761 1762 xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL); 1763 cpi.ccb_h.func_code = XPT_PATH_INQ; 1764 xpt_action((union ccb *)&cpi); 1765 1766 if (cpi.ccb_h.status != CAM_REQ_CMP) { 1767 if (request_ccb != NULL) { 1768 request_ccb->ccb_h.status = cpi.ccb_h.status; 1769 xpt_done(request_ccb); 1770 } 1771 return; 1772 } 1773 1774 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) { 1775 /* 1776 * Can't scan the bus on an adapter that 1777 * cannot perform the initiator role. 1778 */ 1779 if (request_ccb != NULL) { 1780 request_ccb->ccb_h.status = CAM_REQ_CMP; 1781 xpt_done(request_ccb); 1782 } 1783 return; 1784 } 1785 1786 if (request_ccb == NULL) { 1787 request_ccb = malloc(sizeof(union ccb), M_CAMXPT, M_NOWAIT); 1788 if (request_ccb == NULL) { 1789 xpt_print(path, "scsi_scan_lun: can't allocate CCB, " 1790 "can't continue\n"); 1791 return; 1792 } 1793 new_path = malloc(sizeof(*new_path), M_CAMXPT, M_NOWAIT); 1794 if (new_path == NULL) { 1795 xpt_print(path, "scsi_scan_lun: can't allocate path, " 1796 "can't continue\n"); 1797 free(request_ccb, M_CAMXPT); 1798 return; 1799 } 1800 status = xpt_compile_path(new_path, xpt_periph, 1801 path->bus->path_id, 1802 path->target->target_id, 1803 path->device->lun_id); 1804 1805 if (status != CAM_REQ_CMP) { 1806 xpt_print(path, "scsi_scan_lun: can't compile path, " 1807 "can't continue\n"); 1808 free(request_ccb, M_CAMXPT); 1809 free(new_path, M_CAMXPT); 1810 return; 1811 } 1812 xpt_setup_ccb(&request_ccb->ccb_h, new_path, CAM_PRIORITY_NORMAL); 1813 request_ccb->ccb_h.cbfcnp = xptscandone; 1814 request_ccb->ccb_h.func_code = XPT_SCAN_LUN; 1815 request_ccb->crcn.flags = flags; 1816 } 1817 1818 if ((old_periph = cam_periph_find(path, "probe")) != NULL) { 1819 probe_softc *softc; 1820 1821 softc = (probe_softc *)old_periph->softc; 1822 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h, 1823 periph_links.tqe); 1824 } else { 1825 status = cam_periph_alloc(proberegister, NULL, probecleanup, 1826 probestart, "probe", 1827 CAM_PERIPH_BIO, 1828 request_ccb->ccb_h.path, NULL, 0, 1829 request_ccb); 1830 1831 if (status != CAM_REQ_CMP) { 1832 xpt_print(path, "scsi_scan_lun: cam_alloc_periph " 1833 "returned an error, can't continue probe\n"); 1834 request_ccb->ccb_h.status = status; 1835 xpt_done(request_ccb); 1836 } 1837 } 1838 } 1839 1840 static void 1841 xptscandone(struct cam_periph *periph, union ccb *done_ccb) 1842 { 1843 xpt_release_path(done_ccb->ccb_h.path); 1844 free(done_ccb->ccb_h.path, M_CAMXPT); 1845 free(done_ccb, M_CAMXPT); 1846 } 1847 1848 static struct cam_ed * 1849 scsi_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id) 1850 { 1851 struct cam_path path; 1852 struct scsi_quirk_entry *quirk; 1853 struct cam_ed *device; 1854 struct cam_ed *cur_device; 1855 1856 device = xpt_alloc_device(bus, target, lun_id); 1857 if (device == NULL) 1858 return (NULL); 1859 1860 /* 1861 * Take the default quirk entry until we have inquiry 1862 * data and can determine a better quirk to use. 1863 */ 1864 quirk = &scsi_quirk_table[scsi_quirk_table_size - 1]; 1865 device->quirk = (void *)quirk; 1866 device->mintags = quirk->mintags; 1867 device->maxtags = quirk->maxtags; 1868 bzero(&device->inq_data, sizeof(device->inq_data)); 1869 device->inq_flags = 0; 1870 device->queue_flags = 0; 1871 device->serial_num = NULL; 1872 device->serial_num_len = 0; 1873 1874 /* 1875 * XXX should be limited by number of CCBs this bus can 1876 * do. 1877 */ 1878 bus->sim->max_ccbs += device->ccbq.devq_openings; 1879 /* Insertion sort into our target's device list */ 1880 cur_device = TAILQ_FIRST(&target->ed_entries); 1881 while (cur_device != NULL && cur_device->lun_id < lun_id) 1882 cur_device = TAILQ_NEXT(cur_device, links); 1883 if (cur_device != NULL) { 1884 TAILQ_INSERT_BEFORE(cur_device, device, links); 1885 } else { 1886 TAILQ_INSERT_TAIL(&target->ed_entries, device, links); 1887 } 1888 target->generation++; 1889 if (lun_id != CAM_LUN_WILDCARD) { 1890 xpt_compile_path(&path, 1891 NULL, 1892 bus->path_id, 1893 target->target_id, 1894 lun_id); 1895 scsi_devise_transport(&path); 1896 xpt_release_path(&path); 1897 } 1898 1899 return (device); 1900 } 1901 1902 static void 1903 scsi_devise_transport(struct cam_path *path) 1904 { 1905 struct ccb_pathinq cpi; 1906 struct ccb_trans_settings cts; 1907 struct scsi_inquiry_data *inq_buf; 1908 1909 /* Get transport information from the SIM */ 1910 xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL); 1911 cpi.ccb_h.func_code = XPT_PATH_INQ; 1912 xpt_action((union ccb *)&cpi); 1913 1914 inq_buf = NULL; 1915 if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0) 1916 inq_buf = &path->device->inq_data; 1917 path->device->protocol = PROTO_SCSI; 1918 path->device->protocol_version = 1919 inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version; 1920 path->device->transport = cpi.transport; 1921 path->device->transport_version = cpi.transport_version; 1922 1923 /* 1924 * Any device not using SPI3 features should 1925 * be considered SPI2 or lower. 1926 */ 1927 if (inq_buf != NULL) { 1928 if (path->device->transport == XPORT_SPI 1929 && (inq_buf->spi3data & SID_SPI_MASK) == 0 1930 && path->device->transport_version > 2) 1931 path->device->transport_version = 2; 1932 } else { 1933 struct cam_ed* otherdev; 1934 1935 for (otherdev = TAILQ_FIRST(&path->target->ed_entries); 1936 otherdev != NULL; 1937 otherdev = TAILQ_NEXT(otherdev, links)) { 1938 if (otherdev != path->device) 1939 break; 1940 } 1941 1942 if (otherdev != NULL) { 1943 /* 1944 * Initially assume the same versioning as 1945 * prior luns for this target. 1946 */ 1947 path->device->protocol_version = 1948 otherdev->protocol_version; 1949 path->device->transport_version = 1950 otherdev->transport_version; 1951 } else { 1952 /* Until we know better, opt for safty */ 1953 path->device->protocol_version = 2; 1954 if (path->device->transport == XPORT_SPI) 1955 path->device->transport_version = 2; 1956 else 1957 path->device->transport_version = 0; 1958 } 1959 } 1960 1961 /* 1962 * XXX 1963 * For a device compliant with SPC-2 we should be able 1964 * to determine the transport version supported by 1965 * scrutinizing the version descriptors in the 1966 * inquiry buffer. 1967 */ 1968 1969 /* Tell the controller what we think */ 1970 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NORMAL); 1971 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS; 1972 cts.type = CTS_TYPE_CURRENT_SETTINGS; 1973 cts.transport = path->device->transport; 1974 cts.transport_version = path->device->transport_version; 1975 cts.protocol = path->device->protocol; 1976 cts.protocol_version = path->device->protocol_version; 1977 cts.proto_specific.valid = 0; 1978 cts.xport_specific.valid = 0; 1979 xpt_action((union ccb *)&cts); 1980 } 1981 1982 static void 1983 scsi_action(union ccb *start_ccb) 1984 { 1985 1986 switch (start_ccb->ccb_h.func_code) { 1987 case XPT_SET_TRAN_SETTINGS: 1988 { 1989 scsi_set_transfer_settings(&start_ccb->cts, 1990 start_ccb->ccb_h.path->device, 1991 /*async_update*/FALSE); 1992 break; 1993 } 1994 case XPT_SCAN_BUS: 1995 scsi_scan_bus(start_ccb->ccb_h.path->periph, start_ccb); 1996 break; 1997 case XPT_SCAN_LUN: 1998 scsi_scan_lun(start_ccb->ccb_h.path->periph, 1999 start_ccb->ccb_h.path, start_ccb->crcn.flags, 2000 start_ccb); 2001 break; 2002 case XPT_GET_TRAN_SETTINGS: 2003 { 2004 struct cam_sim *sim; 2005 2006 sim = start_ccb->ccb_h.path->bus->sim; 2007 (*(sim->sim_action))(sim, start_ccb); 2008 break; 2009 } 2010 default: 2011 xpt_action_default(start_ccb); 2012 break; 2013 } 2014 } 2015 2016 static void 2017 scsi_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device, 2018 int async_update) 2019 { 2020 struct ccb_pathinq cpi; 2021 struct ccb_trans_settings cur_cts; 2022 struct ccb_trans_settings_scsi *scsi; 2023 struct ccb_trans_settings_scsi *cur_scsi; 2024 struct cam_sim *sim; 2025 struct scsi_inquiry_data *inq_data; 2026 2027 if (device == NULL) { 2028 cts->ccb_h.status = CAM_PATH_INVALID; 2029 xpt_done((union ccb *)cts); 2030 return; 2031 } 2032 2033 if (cts->protocol == PROTO_UNKNOWN 2034 || cts->protocol == PROTO_UNSPECIFIED) { 2035 cts->protocol = device->protocol; 2036 cts->protocol_version = device->protocol_version; 2037 } 2038 2039 if (cts->protocol_version == PROTO_VERSION_UNKNOWN 2040 || cts->protocol_version == PROTO_VERSION_UNSPECIFIED) 2041 cts->protocol_version = device->protocol_version; 2042 2043 if (cts->protocol != device->protocol) { 2044 xpt_print(cts->ccb_h.path, "Uninitialized Protocol %x:%x?\n", 2045 cts->protocol, device->protocol); 2046 cts->protocol = device->protocol; 2047 } 2048 2049 if (cts->protocol_version > device->protocol_version) { 2050 if (bootverbose) { 2051 xpt_print(cts->ccb_h.path, "Down reving Protocol " 2052 "Version from %d to %d?\n", cts->protocol_version, 2053 device->protocol_version); 2054 } 2055 cts->protocol_version = device->protocol_version; 2056 } 2057 2058 if (cts->transport == XPORT_UNKNOWN 2059 || cts->transport == XPORT_UNSPECIFIED) { 2060 cts->transport = device->transport; 2061 cts->transport_version = device->transport_version; 2062 } 2063 2064 if (cts->transport_version == XPORT_VERSION_UNKNOWN 2065 || cts->transport_version == XPORT_VERSION_UNSPECIFIED) 2066 cts->transport_version = device->transport_version; 2067 2068 if (cts->transport != device->transport) { 2069 xpt_print(cts->ccb_h.path, "Uninitialized Transport %x:%x?\n", 2070 cts->transport, device->transport); 2071 cts->transport = device->transport; 2072 } 2073 2074 if (cts->transport_version > device->transport_version) { 2075 if (bootverbose) { 2076 xpt_print(cts->ccb_h.path, "Down reving Transport " 2077 "Version from %d to %d?\n", cts->transport_version, 2078 device->transport_version); 2079 } 2080 cts->transport_version = device->transport_version; 2081 } 2082 2083 sim = cts->ccb_h.path->bus->sim; 2084 2085 /* 2086 * Nothing more of interest to do unless 2087 * this is a device connected via the 2088 * SCSI protocol. 2089 */ 2090 if (cts->protocol != PROTO_SCSI) { 2091 if (async_update == FALSE) 2092 (*(sim->sim_action))(sim, (union ccb *)cts); 2093 return; 2094 } 2095 2096 inq_data = &device->inq_data; 2097 scsi = &cts->proto_specific.scsi; 2098 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, CAM_PRIORITY_NORMAL); 2099 cpi.ccb_h.func_code = XPT_PATH_INQ; 2100 xpt_action((union ccb *)&cpi); 2101 2102 /* SCSI specific sanity checking */ 2103 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0 2104 || (INQ_DATA_TQ_ENABLED(inq_data)) == 0 2105 || (device->queue_flags & SCP_QUEUE_DQUE) != 0 2106 || (device->mintags == 0)) { 2107 /* 2108 * Can't tag on hardware that doesn't support tags, 2109 * doesn't have it enabled, or has broken tag support. 2110 */ 2111 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 2112 } 2113 2114 if (async_update == FALSE) { 2115 /* 2116 * Perform sanity checking against what the 2117 * controller and device can do. 2118 */ 2119 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, CAM_PRIORITY_NORMAL); 2120 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 2121 cur_cts.type = cts->type; 2122 xpt_action((union ccb *)&cur_cts); 2123 if ((cur_cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 2124 return; 2125 } 2126 cur_scsi = &cur_cts.proto_specific.scsi; 2127 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) { 2128 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 2129 scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB; 2130 } 2131 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0) 2132 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 2133 } 2134 2135 /* SPI specific sanity checking */ 2136 if (cts->transport == XPORT_SPI && async_update == FALSE) { 2137 u_int spi3caps; 2138 struct ccb_trans_settings_spi *spi; 2139 struct ccb_trans_settings_spi *cur_spi; 2140 2141 spi = &cts->xport_specific.spi; 2142 2143 cur_spi = &cur_cts.xport_specific.spi; 2144 2145 /* Fill in any gaps in what the user gave us */ 2146 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) 2147 spi->sync_period = cur_spi->sync_period; 2148 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) 2149 spi->sync_period = 0; 2150 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) 2151 spi->sync_offset = cur_spi->sync_offset; 2152 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) 2153 spi->sync_offset = 0; 2154 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) 2155 spi->ppr_options = cur_spi->ppr_options; 2156 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) 2157 spi->ppr_options = 0; 2158 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0) 2159 spi->bus_width = cur_spi->bus_width; 2160 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0) 2161 spi->bus_width = 0; 2162 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) { 2163 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB; 2164 spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB; 2165 } 2166 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0) 2167 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB; 2168 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0 2169 && (inq_data->flags & SID_Sync) == 0 2170 && cts->type == CTS_TYPE_CURRENT_SETTINGS) 2171 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)) { 2172 /* Force async */ 2173 spi->sync_period = 0; 2174 spi->sync_offset = 0; 2175 } 2176 2177 switch (spi->bus_width) { 2178 case MSG_EXT_WDTR_BUS_32_BIT: 2179 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0 2180 || (inq_data->flags & SID_WBus32) != 0 2181 || cts->type == CTS_TYPE_USER_SETTINGS) 2182 && (cpi.hba_inquiry & PI_WIDE_32) != 0) 2183 break; 2184 /* Fall Through to 16-bit */ 2185 case MSG_EXT_WDTR_BUS_16_BIT: 2186 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0 2187 || (inq_data->flags & SID_WBus16) != 0 2188 || cts->type == CTS_TYPE_USER_SETTINGS) 2189 && (cpi.hba_inquiry & PI_WIDE_16) != 0) { 2190 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2191 break; 2192 } 2193 /* Fall Through to 8-bit */ 2194 default: /* New bus width?? */ 2195 case MSG_EXT_WDTR_BUS_8_BIT: 2196 /* All targets can do this */ 2197 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2198 break; 2199 } 2200 2201 spi3caps = cpi.xport_specific.spi.ppr_options; 2202 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0 2203 && cts->type == CTS_TYPE_CURRENT_SETTINGS) 2204 spi3caps &= inq_data->spi3data; 2205 2206 if ((spi3caps & SID_SPI_CLOCK_DT) == 0) 2207 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ; 2208 2209 if ((spi3caps & SID_SPI_IUS) == 0) 2210 spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ; 2211 2212 if ((spi3caps & SID_SPI_QAS) == 0) 2213 spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ; 2214 2215 /* No SPI Transfer settings are allowed unless we are wide */ 2216 if (spi->bus_width == 0) 2217 spi->ppr_options = 0; 2218 2219 if ((spi->valid & CTS_SPI_VALID_DISC) 2220 && ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0)) { 2221 /* 2222 * Can't tag queue without disconnection. 2223 */ 2224 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 2225 scsi->valid |= CTS_SCSI_VALID_TQ; 2226 } 2227 2228 /* 2229 * If we are currently performing tagged transactions to 2230 * this device and want to change its negotiation parameters, 2231 * go non-tagged for a bit to give the controller a chance to 2232 * negotiate unhampered by tag messages. 2233 */ 2234 if (cts->type == CTS_TYPE_CURRENT_SETTINGS 2235 && (device->inq_flags & SID_CmdQue) != 0 2236 && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0 2237 && (spi->flags & (CTS_SPI_VALID_SYNC_RATE| 2238 CTS_SPI_VALID_SYNC_OFFSET| 2239 CTS_SPI_VALID_BUS_WIDTH)) != 0) 2240 scsi_toggle_tags(cts->ccb_h.path); 2241 } 2242 2243 if (cts->type == CTS_TYPE_CURRENT_SETTINGS 2244 && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) { 2245 int device_tagenb; 2246 2247 /* 2248 * If we are transitioning from tags to no-tags or 2249 * vice-versa, we need to carefully freeze and restart 2250 * the queue so that we don't overlap tagged and non-tagged 2251 * commands. We also temporarily stop tags if there is 2252 * a change in transfer negotiation settings to allow 2253 * "tag-less" negotiation. 2254 */ 2255 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 2256 || (device->inq_flags & SID_CmdQue) != 0) 2257 device_tagenb = TRUE; 2258 else 2259 device_tagenb = FALSE; 2260 2261 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0 2262 && device_tagenb == FALSE) 2263 || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0 2264 && device_tagenb == TRUE)) { 2265 2266 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) { 2267 /* 2268 * Delay change to use tags until after a 2269 * few commands have gone to this device so 2270 * the controller has time to perform transfer 2271 * negotiations without tagged messages getting 2272 * in the way. 2273 */ 2274 device->tag_delay_count = CAM_TAG_DELAY_COUNT; 2275 device->flags |= CAM_DEV_TAG_AFTER_COUNT; 2276 } else { 2277 xpt_stop_tags(cts->ccb_h.path); 2278 } 2279 } 2280 } 2281 if (async_update == FALSE) 2282 (*(sim->sim_action))(sim, (union ccb *)cts); 2283 } 2284 2285 static void 2286 scsi_toggle_tags(struct cam_path *path) 2287 { 2288 struct cam_ed *dev; 2289 2290 /* 2291 * Give controllers a chance to renegotiate 2292 * before starting tag operations. We 2293 * "toggle" tagged queuing off then on 2294 * which causes the tag enable command delay 2295 * counter to come into effect. 2296 */ 2297 dev = path->device; 2298 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 2299 || ((dev->inq_flags & SID_CmdQue) != 0 2300 && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) { 2301 struct ccb_trans_settings cts; 2302 2303 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NORMAL); 2304 cts.protocol = PROTO_SCSI; 2305 cts.protocol_version = PROTO_VERSION_UNSPECIFIED; 2306 cts.transport = XPORT_UNSPECIFIED; 2307 cts.transport_version = XPORT_VERSION_UNSPECIFIED; 2308 cts.proto_specific.scsi.flags = 0; 2309 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ; 2310 scsi_set_transfer_settings(&cts, path->device, 2311 /*async_update*/TRUE); 2312 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB; 2313 scsi_set_transfer_settings(&cts, path->device, 2314 /*async_update*/TRUE); 2315 } 2316 } 2317 2318 /* 2319 * Handle any per-device event notifications that require action by the XPT. 2320 */ 2321 static void 2322 scsi_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target, 2323 struct cam_ed *device, void *async_arg) 2324 { 2325 cam_status status; 2326 struct cam_path newpath; 2327 2328 /* 2329 * We only need to handle events for real devices. 2330 */ 2331 if (target->target_id == CAM_TARGET_WILDCARD 2332 || device->lun_id == CAM_LUN_WILDCARD) 2333 return; 2334 2335 /* 2336 * We need our own path with wildcards expanded to 2337 * handle certain types of events. 2338 */ 2339 if ((async_code == AC_SENT_BDR) 2340 || (async_code == AC_BUS_RESET) 2341 || (async_code == AC_INQ_CHANGED)) 2342 status = xpt_compile_path(&newpath, NULL, 2343 bus->path_id, 2344 target->target_id, 2345 device->lun_id); 2346 else 2347 status = CAM_REQ_CMP_ERR; 2348 2349 if (status == CAM_REQ_CMP) { 2350 2351 /* 2352 * Allow transfer negotiation to occur in a 2353 * tag free environment. 2354 */ 2355 if (async_code == AC_SENT_BDR 2356 || async_code == AC_BUS_RESET) 2357 scsi_toggle_tags(&newpath); 2358 2359 if (async_code == AC_INQ_CHANGED) { 2360 /* 2361 * We've sent a start unit command, or 2362 * something similar to a device that 2363 * may have caused its inquiry data to 2364 * change. So we re-scan the device to 2365 * refresh the inquiry data for it. 2366 */ 2367 scsi_scan_lun(newpath.periph, &newpath, 2368 CAM_EXPECT_INQ_CHANGE, NULL); 2369 } 2370 xpt_release_path(&newpath); 2371 } else if (async_code == AC_LOST_DEVICE && 2372 (device->flags & CAM_DEV_UNCONFIGURED) == 0) { 2373 device->flags |= CAM_DEV_UNCONFIGURED; 2374 xpt_release_device(device); 2375 } else if (async_code == AC_TRANSFER_NEG) { 2376 struct ccb_trans_settings *settings; 2377 2378 settings = (struct ccb_trans_settings *)async_arg; 2379 scsi_set_transfer_settings(settings, device, 2380 /*async_update*/TRUE); 2381 } 2382 } 2383 2384