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