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sys/cam/scsi/scsi_da.c
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1 /* 2 * Implementation of SCSI Direct Access Peripheral driver for CAM. 3 * 4 * Copyright (c) 1997 Justin T. Gibbs. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD: releng/5.3/sys/cam/scsi/scsi_da.c 133601 2004-08-12 23:17:09Z sanpei $"); 31 32 #ifdef _KERNEL 33 #include "opt_hw_wdog.h" 34 #endif /* _KERNEL */ 35 36 #include <sys/param.h> 37 38 #ifdef _KERNEL 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/bio.h> 42 #include <sys/sysctl.h> 43 #include <sys/taskqueue.h> 44 #endif /* _KERNEL */ 45 46 #include <sys/devicestat.h> 47 #include <sys/conf.h> 48 #include <sys/eventhandler.h> 49 #include <sys/malloc.h> 50 #include <sys/cons.h> 51 52 #include <machine/md_var.h> 53 54 #include <vm/vm.h> 55 #include <vm/pmap.h> 56 57 #include <geom/geom_disk.h> 58 59 #ifndef _KERNEL 60 #include <stdio.h> 61 #include <string.h> 62 #endif /* _KERNEL */ 63 64 #include <cam/cam.h> 65 #include <cam/cam_ccb.h> 66 #include <cam/cam_periph.h> 67 #include <cam/cam_xpt_periph.h> 68 69 #include <cam/scsi/scsi_message.h> 70 71 #ifndef _KERNEL 72 #include <cam/scsi/scsi_da.h> 73 #endif /* !_KERNEL */ 74 75 #ifdef _KERNEL 76 typedef enum { 77 DA_STATE_PROBE, 78 DA_STATE_PROBE2, 79 DA_STATE_NORMAL 80 } da_state; 81 82 typedef enum { 83 DA_FLAG_PACK_INVALID = 0x001, 84 DA_FLAG_NEW_PACK = 0x002, 85 DA_FLAG_PACK_LOCKED = 0x004, 86 DA_FLAG_PACK_REMOVABLE = 0x008, 87 DA_FLAG_TAGGED_QUEUING = 0x010, 88 DA_FLAG_NEED_OTAG = 0x020, 89 DA_FLAG_WENT_IDLE = 0x040, 90 DA_FLAG_RETRY_UA = 0x080, 91 DA_FLAG_OPEN = 0x100, 92 DA_FLAG_SCTX_INIT = 0x200 93 } da_flags; 94 95 typedef enum { 96 DA_Q_NONE = 0x00, 97 DA_Q_NO_SYNC_CACHE = 0x01, 98 DA_Q_NO_6_BYTE = 0x02, 99 DA_Q_NO_PREVENT = 0x04 100 } da_quirks; 101 102 typedef enum { 103 DA_CCB_PROBE = 0x01, 104 DA_CCB_PROBE2 = 0x02, 105 DA_CCB_BUFFER_IO = 0x03, 106 DA_CCB_WAITING = 0x04, 107 DA_CCB_DUMP = 0x05, 108 DA_CCB_TYPE_MASK = 0x0F, 109 DA_CCB_RETRY_UA = 0x10 110 } da_ccb_state; 111 112 /* Offsets into our private area for storing information */ 113 #define ccb_state ppriv_field0 114 #define ccb_bp ppriv_ptr1 115 116 struct disk_params { 117 u_int8_t heads; 118 u_int32_t cylinders; 119 u_int8_t secs_per_track; 120 u_int32_t secsize; /* Number of bytes/sector */ 121 u_int64_t sectors; /* total number sectors */ 122 }; 123 124 struct da_softc { 125 struct bio_queue_head bio_queue; 126 SLIST_ENTRY(da_softc) links; 127 LIST_HEAD(, ccb_hdr) pending_ccbs; 128 da_state state; 129 da_flags flags; 130 da_quirks quirks; 131 int minimum_cmd_size; 132 int ordered_tag_count; 133 int outstanding_cmds; 134 struct disk_params params; 135 struct disk *disk; 136 union ccb saved_ccb; 137 struct task sysctl_task; 138 struct sysctl_ctx_list sysctl_ctx; 139 struct sysctl_oid *sysctl_tree; 140 }; 141 142 struct da_quirk_entry { 143 struct scsi_inquiry_pattern inq_pat; 144 da_quirks quirks; 145 }; 146 147 static const char quantum[] = "QUANTUM"; 148 static const char microp[] = "MICROP"; 149 150 static struct da_quirk_entry da_quirk_table[] = 151 { 152 /* SPI, FC devices */ 153 { 154 /* 155 * Fujitsu M2513A MO drives. 156 * Tested devices: M2513A2 firmware versions 1200 & 1300. 157 * (dip switch selects whether T_DIRECT or T_OPTICAL device) 158 * Reported by: W.Scholten <whs@xs4all.nl> 159 */ 160 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"}, 161 /*quirks*/ DA_Q_NO_SYNC_CACHE 162 }, 163 { 164 /* See above. */ 165 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"}, 166 /*quirks*/ DA_Q_NO_SYNC_CACHE 167 }, 168 { 169 /* 170 * This particular Fujitsu drive doesn't like the 171 * synchronize cache command. 172 * Reported by: Tom Jackson <toj@gorilla.net> 173 */ 174 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"}, 175 /*quirks*/ DA_Q_NO_SYNC_CACHE 176 177 }, 178 { 179 /* 180 * This drive doesn't like the synchronize cache command 181 * either. Reported by: Matthew Jacob <mjacob@feral.com> 182 * in NetBSD PR kern/6027, August 24, 1998. 183 */ 184 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"}, 185 /*quirks*/ DA_Q_NO_SYNC_CACHE 186 }, 187 { 188 /* 189 * This drive doesn't like the synchronize cache command 190 * either. Reported by: Hellmuth Michaelis (hm@kts.org) 191 * (PR 8882). 192 */ 193 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"}, 194 /*quirks*/ DA_Q_NO_SYNC_CACHE 195 }, 196 { 197 /* 198 * Doesn't like the synchronize cache command. 199 * Reported by: Blaz Zupan <blaz@gold.amis.net> 200 */ 201 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"}, 202 /*quirks*/ DA_Q_NO_SYNC_CACHE 203 }, 204 { 205 /* 206 * Doesn't like the synchronize cache command. 207 */ 208 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"}, 209 /*quirks*/ DA_Q_NO_SYNC_CACHE 210 }, 211 { 212 /* 213 * Doesn't like the synchronize cache command. 214 */ 215 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"}, 216 /*quirks*/ DA_Q_NO_SYNC_CACHE 217 }, 218 { 219 /* 220 * Doesn't work correctly with 6 byte reads/writes. 221 * Returns illegal request, and points to byte 9 of the 222 * 6-byte CDB. 223 * Reported by: Adam McDougall <bsdx@spawnet.com> 224 */ 225 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"}, 226 /*quirks*/ DA_Q_NO_6_BYTE 227 }, 228 { 229 /* See above. */ 230 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"}, 231 /*quirks*/ DA_Q_NO_6_BYTE 232 }, 233 { 234 /* 235 * The CISS RAID controllers do not support SYNC_CACHE 236 */ 237 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"}, 238 /*quirks*/ DA_Q_NO_SYNC_CACHE 239 }, 240 /* USB mass storage devices supported by umass(4) */ 241 { 242 /* 243 * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player 244 * PR: kern/51675 245 */ 246 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"}, 247 /*quirks*/ DA_Q_NO_SYNC_CACHE 248 }, 249 { 250 /* 251 * Power Quotient Int. (PQI) USB flash key 252 * PR: kern/53067 253 */ 254 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "USB Flash Disk*", 255 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE 256 }, 257 { 258 /* 259 * Creative Nomad MUVO mp3 player (USB) 260 * PR: kern/53094 261 */ 262 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"}, 263 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT 264 }, 265 { 266 /* 267 * Jungsoft NEXDISK USB flash key 268 * PR: kern/54737 269 */ 270 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"}, 271 /*quirks*/ DA_Q_NO_SYNC_CACHE 272 }, 273 { 274 /* 275 * FreeDik USB Mini Data Drive 276 * PR: kern/54786 277 */ 278 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FreeDik*", "Mini Data Drive", 279 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE 280 }, 281 { 282 /* 283 * Sigmatel USB Flash MP3 Player 284 * PR: kern/57046 285 */ 286 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"}, 287 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT 288 }, 289 { 290 /* 291 * Neuros USB Digital Audio Computer 292 * PR: kern/63645 293 */ 294 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NEUROS", "dig. audio comp.", 295 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE 296 }, 297 { 298 /* 299 * SEAGRAND NP-900 MP3 Player 300 * PR: kern/64563 301 */ 302 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"}, 303 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT 304 }, 305 { 306 /* 307 * iRiver iFP MP3 player (with UMS Firmware) 308 * PR: kern/54881, i386/63941, kern/66124 309 */ 310 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"}, 311 /*quirks*/ DA_Q_NO_SYNC_CACHE 312 }, 313 { 314 /* 315 * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01 316 * PR: kern/70158 317 */ 318 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "NexIA+*", "*"}, 319 /*quirks*/ DA_Q_NO_SYNC_CACHE 320 }, 321 }; 322 323 static disk_strategy_t dastrategy; 324 static dumper_t dadump; 325 static periph_init_t dainit; 326 static void daasync(void *callback_arg, u_int32_t code, 327 struct cam_path *path, void *arg); 328 static void dasysctlinit(void *context, int pending); 329 static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS); 330 static periph_ctor_t daregister; 331 static periph_dtor_t dacleanup; 332 static periph_start_t dastart; 333 static periph_oninv_t daoninvalidate; 334 static void dadone(struct cam_periph *periph, 335 union ccb *done_ccb); 336 static int daerror(union ccb *ccb, u_int32_t cam_flags, 337 u_int32_t sense_flags); 338 static void daprevent(struct cam_periph *periph, int action); 339 static int dagetcapacity(struct cam_periph *periph); 340 static void dasetgeom(struct cam_periph *periph, uint32_t block_len, 341 uint64_t maxsector); 342 static timeout_t dasendorderedtag; 343 static void dashutdown(void *arg, int howto); 344 345 #ifndef DA_DEFAULT_TIMEOUT 346 #define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */ 347 #endif 348 349 #ifndef DA_DEFAULT_RETRY 350 #define DA_DEFAULT_RETRY 4 351 #endif 352 353 static int da_retry_count = DA_DEFAULT_RETRY; 354 static int da_default_timeout = DA_DEFAULT_TIMEOUT; 355 356 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0, 357 "CAM Direct Access Disk driver"); 358 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW, 359 &da_retry_count, 0, "Normal I/O retry count"); 360 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count); 361 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW, 362 &da_default_timeout, 0, "Normal I/O timeout (in seconds)"); 363 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout); 364 365 /* 366 * DA_ORDEREDTAG_INTERVAL determines how often, relative 367 * to the default timeout, we check to see whether an ordered 368 * tagged transaction is appropriate to prevent simple tag 369 * starvation. Since we'd like to ensure that there is at least 370 * 1/2 of the timeout length left for a starved transaction to 371 * complete after we've sent an ordered tag, we must poll at least 372 * four times in every timeout period. This takes care of the worst 373 * case where a starved transaction starts during an interval that 374 * meets the requirement "don't send an ordered tag" test so it takes 375 * us two intervals to determine that a tag must be sent. 376 */ 377 #ifndef DA_ORDEREDTAG_INTERVAL 378 #define DA_ORDEREDTAG_INTERVAL 4 379 #endif 380 381 static struct periph_driver dadriver = 382 { 383 dainit, "da", 384 TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0 385 }; 386 387 PERIPHDRIVER_DECLARE(da, dadriver); 388 389 static SLIST_HEAD(,da_softc) softc_list; 390 391 static int 392 daopen(struct disk *dp) 393 { 394 struct cam_periph *periph; 395 struct da_softc *softc; 396 int unit; 397 int error; 398 int s; 399 400 s = splsoftcam(); 401 periph = (struct cam_periph *)dp->d_drv1; 402 if (periph == NULL) { 403 splx(s); 404 return (ENXIO); 405 } 406 unit = periph->unit_number; 407 408 softc = (struct da_softc *)periph->softc; 409 410 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 411 ("daopen: disk=%s%d (unit %d)\n", dp->d_name, dp->d_unit, 412 unit)); 413 414 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) 415 return (error); /* error code from tsleep */ 416 417 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 418 return(ENXIO); 419 softc->flags |= DA_FLAG_OPEN; 420 421 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) { 422 /* Invalidate our pack information. */ 423 softc->flags &= ~DA_FLAG_PACK_INVALID; 424 } 425 splx(s); 426 427 error = dagetcapacity(periph); 428 429 if (error == 0) { 430 431 softc->disk->d_sectorsize = softc->params.secsize; 432 softc->disk->d_mediasize = softc->params.secsize * (off_t)softc->params.sectors; 433 /* XXX: these are not actually "firmware" values, so they may be wrong */ 434 softc->disk->d_fwsectors = softc->params.secs_per_track; 435 softc->disk->d_fwheads = softc->params.heads; 436 softc->disk->d_devstat->block_size = softc->params.secsize; 437 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE; 438 } 439 440 if (error == 0) { 441 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 && 442 (softc->quirks & DA_Q_NO_PREVENT) == 0) 443 daprevent(periph, PR_PREVENT); 444 } else { 445 softc->flags &= ~DA_FLAG_OPEN; 446 cam_periph_release(periph); 447 } 448 cam_periph_unlock(periph); 449 return (error); 450 } 451 452 static int 453 daclose(struct disk *dp) 454 { 455 struct cam_periph *periph; 456 struct da_softc *softc; 457 int error; 458 459 periph = (struct cam_periph *)dp->d_drv1; 460 if (periph == NULL) 461 return (ENXIO); 462 463 softc = (struct da_softc *)periph->softc; 464 465 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 466 return (error); /* error code from tsleep */ 467 } 468 469 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) { 470 union ccb *ccb; 471 472 ccb = cam_periph_getccb(periph, /*priority*/1); 473 474 scsi_synchronize_cache(&ccb->csio, 475 /*retries*/1, 476 /*cbfcnp*/dadone, 477 MSG_SIMPLE_Q_TAG, 478 /*begin_lba*/0,/* Cover the whole disk */ 479 /*lb_count*/0, 480 SSD_FULL_SIZE, 481 5 * 60 * 1000); 482 483 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0, 484 /*sense_flags*/SF_RETRY_UA, 485 softc->disk->d_devstat); 486 487 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 488 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == 489 CAM_SCSI_STATUS_ERROR) { 490 int asc, ascq; 491 int sense_key, error_code; 492 493 scsi_extract_sense(&ccb->csio.sense_data, 494 &error_code, 495 &sense_key, 496 &asc, &ascq); 497 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 498 scsi_sense_print(&ccb->csio); 499 } else { 500 xpt_print_path(periph->path); 501 printf("Synchronize cache failed, status " 502 "== 0x%x, scsi status == 0x%x\n", 503 ccb->csio.ccb_h.status, 504 ccb->csio.scsi_status); 505 } 506 } 507 508 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 509 cam_release_devq(ccb->ccb_h.path, 510 /*relsim_flags*/0, 511 /*reduction*/0, 512 /*timeout*/0, 513 /*getcount_only*/0); 514 515 xpt_release_ccb(ccb); 516 517 } 518 519 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) { 520 if ((softc->quirks & DA_Q_NO_PREVENT) == 0) 521 daprevent(periph, PR_ALLOW); 522 /* 523 * If we've got removeable media, mark the blocksize as 524 * unavailable, since it could change when new media is 525 * inserted. 526 */ 527 softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE; 528 } 529 530 softc->flags &= ~DA_FLAG_OPEN; 531 cam_periph_unlock(periph); 532 cam_periph_release(periph); 533 return (0); 534 } 535 536 /* 537 * Actually translate the requested transfer into one the physical driver 538 * can understand. The transfer is described by a buf and will include 539 * only one physical transfer. 540 */ 541 static void 542 dastrategy(struct bio *bp) 543 { 544 struct cam_periph *periph; 545 struct da_softc *softc; 546 int s; 547 548 periph = (struct cam_periph *)bp->bio_disk->d_drv1; 549 if (periph == NULL) { 550 biofinish(bp, NULL, ENXIO); 551 return; 552 } 553 softc = (struct da_softc *)periph->softc; 554 #if 0 555 /* 556 * check it's not too big a transfer for our adapter 557 */ 558 scsi_minphys(bp,&sd_switch); 559 #endif 560 561 /* 562 * Mask interrupts so that the pack cannot be invalidated until 563 * after we are in the queue. Otherwise, we might not properly 564 * clean up one of the buffers. 565 */ 566 s = splbio(); 567 568 /* 569 * If the device has been made invalid, error out 570 */ 571 if ((softc->flags & DA_FLAG_PACK_INVALID)) { 572 splx(s); 573 biofinish(bp, NULL, ENXIO); 574 return; 575 } 576 577 /* 578 * Place it in the queue of disk activities for this disk 579 */ 580 bioq_disksort(&softc->bio_queue, bp); 581 582 splx(s); 583 584 /* 585 * Schedule ourselves for performing the work. 586 */ 587 xpt_schedule(periph, /* XXX priority */1); 588 589 return; 590 } 591 592 static int 593 dadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length) 594 { 595 struct cam_periph *periph; 596 struct da_softc *softc; 597 u_int secsize; 598 struct ccb_scsiio csio; 599 struct disk *dp; 600 601 dp = arg; 602 periph = dp->d_drv1; 603 if (periph == NULL) 604 return (ENXIO); 605 softc = (struct da_softc *)periph->softc; 606 secsize = softc->params.secsize; 607 608 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) 609 return (ENXIO); 610 611 if (length > 0) { 612 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1); 613 csio.ccb_h.ccb_state = DA_CCB_DUMP; 614 scsi_read_write(&csio, 615 /*retries*/1, 616 dadone, 617 MSG_ORDERED_Q_TAG, 618 /*read*/FALSE, 619 /*byte2*/0, 620 /*minimum_cmd_size*/ softc->minimum_cmd_size, 621 offset / secsize, 622 length / secsize, 623 /*data_ptr*/(u_int8_t *) virtual, 624 /*dxfer_len*/length, 625 /*sense_len*/SSD_FULL_SIZE, 626 DA_DEFAULT_TIMEOUT * 1000); 627 xpt_polled_action((union ccb *)&csio); 628 629 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 630 printf("Aborting dump due to I/O error.\n"); 631 if ((csio.ccb_h.status & CAM_STATUS_MASK) == 632 CAM_SCSI_STATUS_ERROR) 633 scsi_sense_print(&csio); 634 else 635 printf("status == 0x%x, scsi status == 0x%x\n", 636 csio.ccb_h.status, csio.scsi_status); 637 return(EIO); 638 } 639 return(0); 640 } 641 642 /* 643 * Sync the disk cache contents to the physical media. 644 */ 645 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) { 646 647 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1); 648 csio.ccb_h.ccb_state = DA_CCB_DUMP; 649 scsi_synchronize_cache(&csio, 650 /*retries*/1, 651 /*cbfcnp*/dadone, 652 MSG_SIMPLE_Q_TAG, 653 /*begin_lba*/0,/* Cover the whole disk */ 654 /*lb_count*/0, 655 SSD_FULL_SIZE, 656 5 * 60 * 1000); 657 xpt_polled_action((union ccb *)&csio); 658 659 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 660 if ((csio.ccb_h.status & CAM_STATUS_MASK) == 661 CAM_SCSI_STATUS_ERROR) { 662 int asc, ascq; 663 int sense_key, error_code; 664 665 scsi_extract_sense(&csio.sense_data, 666 &error_code, 667 &sense_key, 668 &asc, &ascq); 669 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 670 scsi_sense_print(&csio); 671 } else { 672 xpt_print_path(periph->path); 673 printf("Synchronize cache failed, status " 674 "== 0x%x, scsi status == 0x%x\n", 675 csio.ccb_h.status, csio.scsi_status); 676 } 677 } 678 } 679 return (0); 680 } 681 682 static void 683 dainit(void) 684 { 685 cam_status status; 686 struct cam_path *path; 687 688 SLIST_INIT(&softc_list); 689 690 /* 691 * Install a global async callback. This callback will 692 * receive async callbacks like "new device found". 693 */ 694 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID, 695 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 696 697 if (status == CAM_REQ_CMP) { 698 struct ccb_setasync csa; 699 700 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5); 701 csa.ccb_h.func_code = XPT_SASYNC_CB; 702 csa.event_enable = AC_FOUND_DEVICE; 703 csa.callback = daasync; 704 csa.callback_arg = NULL; 705 xpt_action((union ccb *)&csa); 706 status = csa.ccb_h.status; 707 xpt_free_path(path); 708 } 709 710 if (status != CAM_REQ_CMP) { 711 printf("da: Failed to attach master async callback " 712 "due to status 0x%x!\n", status); 713 } else { 714 715 /* 716 * Schedule a periodic event to occasionally send an 717 * ordered tag to a device. 718 */ 719 timeout(dasendorderedtag, NULL, 720 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL); 721 722 /* Register our shutdown event handler */ 723 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown, 724 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL) 725 printf("dainit: shutdown event registration failed!\n"); 726 } 727 } 728 729 static void 730 daoninvalidate(struct cam_periph *periph) 731 { 732 int s; 733 struct da_softc *softc; 734 struct ccb_setasync csa; 735 736 softc = (struct da_softc *)periph->softc; 737 738 /* 739 * De-register any async callbacks. 740 */ 741 xpt_setup_ccb(&csa.ccb_h, periph->path, 742 /* priority */ 5); 743 csa.ccb_h.func_code = XPT_SASYNC_CB; 744 csa.event_enable = 0; 745 csa.callback = daasync; 746 csa.callback_arg = periph; 747 xpt_action((union ccb *)&csa); 748 749 softc->flags |= DA_FLAG_PACK_INVALID; 750 751 /* 752 * Although the oninvalidate() routines are always called at 753 * splsoftcam, we need to be at splbio() here to keep the buffer 754 * queue from being modified while we traverse it. 755 */ 756 s = splbio(); 757 758 /* 759 * Return all queued I/O with ENXIO. 760 * XXX Handle any transactions queued to the card 761 * with XPT_ABORT_CCB. 762 */ 763 bioq_flush(&softc->bio_queue, NULL, ENXIO); 764 splx(s); 765 766 SLIST_REMOVE(&softc_list, softc, da_softc, links); 767 768 xpt_print_path(periph->path); 769 printf("lost device\n"); 770 } 771 772 static void 773 dacleanup(struct cam_periph *periph) 774 { 775 struct da_softc *softc; 776 777 softc = (struct da_softc *)periph->softc; 778 779 xpt_print_path(periph->path); 780 printf("removing device entry\n"); 781 /* 782 * If we can't free the sysctl tree, oh well... 783 */ 784 if ((softc->flags & DA_FLAG_SCTX_INIT) != 0 785 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) { 786 xpt_print_path(periph->path); 787 printf("can't remove sysctl context\n"); 788 } 789 disk_destroy(softc->disk); 790 free(softc, M_DEVBUF); 791 } 792 793 static void 794 daasync(void *callback_arg, u_int32_t code, 795 struct cam_path *path, void *arg) 796 { 797 struct cam_periph *periph; 798 799 periph = (struct cam_periph *)callback_arg; 800 switch (code) { 801 case AC_FOUND_DEVICE: 802 { 803 struct ccb_getdev *cgd; 804 cam_status status; 805 806 cgd = (struct ccb_getdev *)arg; 807 if (cgd == NULL) 808 break; 809 810 if (SID_TYPE(&cgd->inq_data) != T_DIRECT 811 && SID_TYPE(&cgd->inq_data) != T_RBC 812 && SID_TYPE(&cgd->inq_data) != T_OPTICAL) 813 break; 814 815 /* 816 * Allocate a peripheral instance for 817 * this device and start the probe 818 * process. 819 */ 820 status = cam_periph_alloc(daregister, daoninvalidate, 821 dacleanup, dastart, 822 "da", CAM_PERIPH_BIO, 823 cgd->ccb_h.path, daasync, 824 AC_FOUND_DEVICE, cgd); 825 826 if (status != CAM_REQ_CMP 827 && status != CAM_REQ_INPROG) 828 printf("daasync: Unable to attach to new device " 829 "due to status 0x%x\n", status); 830 break; 831 } 832 case AC_SENT_BDR: 833 case AC_BUS_RESET: 834 { 835 struct da_softc *softc; 836 struct ccb_hdr *ccbh; 837 int s; 838 839 softc = (struct da_softc *)periph->softc; 840 s = splsoftcam(); 841 /* 842 * Don't fail on the expected unit attention 843 * that will occur. 844 */ 845 softc->flags |= DA_FLAG_RETRY_UA; 846 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le) 847 ccbh->ccb_state |= DA_CCB_RETRY_UA; 848 splx(s); 849 /* FALLTHROUGH*/ 850 } 851 default: 852 cam_periph_async(periph, code, path, arg); 853 break; 854 } 855 } 856 857 static void 858 dasysctlinit(void *context, int pending) 859 { 860 struct cam_periph *periph; 861 struct da_softc *softc; 862 char tmpstr[80], tmpstr2[80]; 863 864 periph = (struct cam_periph *)context; 865 softc = (struct da_softc *)periph->softc; 866 867 snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number); 868 snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number); 869 870 mtx_lock(&Giant); 871 sysctl_ctx_init(&softc->sysctl_ctx); 872 softc->flags |= DA_FLAG_SCTX_INIT; 873 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 874 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2, 875 CTLFLAG_RD, 0, tmpstr); 876 if (softc->sysctl_tree == NULL) { 877 printf("dasysctlinit: unable to allocate sysctl tree\n"); 878 return; 879 } 880 881 /* 882 * Now register the sysctl handler, so the user can the value on 883 * the fly. 884 */ 885 SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree), 886 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW, 887 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I", 888 "Minimum CDB size"); 889 890 mtx_unlock(&Giant); 891 } 892 893 static int 894 dacmdsizesysctl(SYSCTL_HANDLER_ARGS) 895 { 896 int error, value; 897 898 value = *(int *)arg1; 899 900 error = sysctl_handle_int(oidp, &value, 0, req); 901 902 if ((error != 0) 903 || (req->newptr == NULL)) 904 return (error); 905 906 /* 907 * Acceptable values here are 6, 10, 12 or 16. 908 */ 909 if (value < 6) 910 value = 6; 911 else if ((value > 6) 912 && (value <= 10)) 913 value = 10; 914 else if ((value > 10) 915 && (value <= 12)) 916 value = 12; 917 else if (value > 12) 918 value = 16; 919 920 *(int *)arg1 = value; 921 922 return (0); 923 } 924 925 static cam_status 926 daregister(struct cam_periph *periph, void *arg) 927 { 928 int s; 929 struct da_softc *softc; 930 struct ccb_setasync csa; 931 struct ccb_pathinq cpi; 932 struct ccb_getdev *cgd; 933 char tmpstr[80]; 934 caddr_t match; 935 936 cgd = (struct ccb_getdev *)arg; 937 if (periph == NULL) { 938 printf("daregister: periph was NULL!!\n"); 939 return(CAM_REQ_CMP_ERR); 940 } 941 942 if (cgd == NULL) { 943 printf("daregister: no getdev CCB, can't register device\n"); 944 return(CAM_REQ_CMP_ERR); 945 } 946 947 softc = (struct da_softc *)malloc(sizeof(*softc), M_DEVBUF, 948 M_NOWAIT|M_ZERO); 949 950 if (softc == NULL) { 951 printf("daregister: Unable to probe new device. " 952 "Unable to allocate softc\n"); 953 return(CAM_REQ_CMP_ERR); 954 } 955 956 LIST_INIT(&softc->pending_ccbs); 957 softc->state = DA_STATE_PROBE; 958 bioq_init(&softc->bio_queue); 959 if (SID_IS_REMOVABLE(&cgd->inq_data)) 960 softc->flags |= DA_FLAG_PACK_REMOVABLE; 961 if ((cgd->inq_data.flags & SID_CmdQue) != 0) 962 softc->flags |= DA_FLAG_TAGGED_QUEUING; 963 964 periph->softc = softc; 965 966 /* 967 * See if this device has any quirks. 968 */ 969 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 970 (caddr_t)da_quirk_table, 971 sizeof(da_quirk_table)/sizeof(*da_quirk_table), 972 sizeof(*da_quirk_table), scsi_inquiry_match); 973 974 if (match != NULL) 975 softc->quirks = ((struct da_quirk_entry *)match)->quirks; 976 else 977 softc->quirks = DA_Q_NONE; 978 979 /* Check if the SIM does not want 6 byte commands */ 980 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1); 981 cpi.ccb_h.func_code = XPT_PATH_INQ; 982 xpt_action((union ccb *)&cpi); 983 if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE)) 984 softc->quirks |= DA_Q_NO_6_BYTE; 985 986 TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph); 987 988 /* 989 * RBC devices don't have to support READ(6), only READ(10). 990 */ 991 if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC) 992 softc->minimum_cmd_size = 10; 993 else 994 softc->minimum_cmd_size = 6; 995 996 /* 997 * Load the user's default, if any. 998 */ 999 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size", 1000 periph->unit_number); 1001 TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size); 1002 1003 /* 1004 * 6, 10, 12 and 16 are the currently permissible values. 1005 */ 1006 if (softc->minimum_cmd_size < 6) 1007 softc->minimum_cmd_size = 6; 1008 else if ((softc->minimum_cmd_size > 6) 1009 && (softc->minimum_cmd_size <= 10)) 1010 softc->minimum_cmd_size = 10; 1011 else if ((softc->minimum_cmd_size > 10) 1012 && (softc->minimum_cmd_size <= 12)) 1013 softc->minimum_cmd_size = 12; 1014 else if (softc->minimum_cmd_size > 12) 1015 softc->minimum_cmd_size = 16; 1016 1017 /* 1018 * Block our timeout handler while we 1019 * add this softc to the dev list. 1020 */ 1021 s = splsoftclock(); 1022 SLIST_INSERT_HEAD(&softc_list, softc, links); 1023 splx(s); 1024 1025 /* 1026 * Register this media as a disk 1027 */ 1028 1029 softc->disk = disk_alloc(); 1030 softc->disk->d_open = daopen; 1031 softc->disk->d_close = daclose; 1032 softc->disk->d_strategy = dastrategy; 1033 softc->disk->d_dump = dadump; 1034 softc->disk->d_name = "da"; 1035 softc->disk->d_drv1 = periph; 1036 softc->disk->d_maxsize = DFLTPHYS; /* XXX: probably not arbitrary */ 1037 softc->disk->d_unit = periph->unit_number; 1038 softc->disk->d_flags = DISKFLAG_NEEDSGIANT; 1039 disk_create(softc->disk, DISK_VERSION); 1040 1041 /* 1042 * Add async callbacks for bus reset and 1043 * bus device reset calls. I don't bother 1044 * checking if this fails as, in most cases, 1045 * the system will function just fine without 1046 * them and the only alternative would be to 1047 * not attach the device on failure. 1048 */ 1049 xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5); 1050 csa.ccb_h.func_code = XPT_SASYNC_CB; 1051 csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE; 1052 csa.callback = daasync; 1053 csa.callback_arg = periph; 1054 xpt_action((union ccb *)&csa); 1055 /* 1056 * Lock this peripheral until we are setup. 1057 * This first call can't block 1058 */ 1059 (void)cam_periph_lock(periph, PRIBIO); 1060 xpt_schedule(periph, /*priority*/5); 1061 1062 return(CAM_REQ_CMP); 1063 } 1064 1065 static void 1066 dastart(struct cam_periph *periph, union ccb *start_ccb) 1067 { 1068 struct da_softc *softc; 1069 1070 softc = (struct da_softc *)periph->softc; 1071 1072 1073 switch (softc->state) { 1074 case DA_STATE_NORMAL: 1075 { 1076 /* Pull a buffer from the queue and get going on it */ 1077 struct bio *bp; 1078 int s; 1079 1080 /* 1081 * See if there is a buf with work for us to do.. 1082 */ 1083 s = splbio(); 1084 bp = bioq_first(&softc->bio_queue); 1085 if (periph->immediate_priority <= periph->pinfo.priority) { 1086 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1087 ("queuing for immediate ccb\n")); 1088 start_ccb->ccb_h.ccb_state = DA_CCB_WAITING; 1089 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1090 periph_links.sle); 1091 periph->immediate_priority = CAM_PRIORITY_NONE; 1092 splx(s); 1093 wakeup(&periph->ccb_list); 1094 } else if (bp == NULL) { 1095 splx(s); 1096 xpt_release_ccb(start_ccb); 1097 } else { 1098 int oldspl; 1099 u_int8_t tag_code; 1100 1101 bioq_remove(&softc->bio_queue, bp); 1102 1103 if ((softc->flags & DA_FLAG_NEED_OTAG) != 0) { 1104 softc->flags &= ~DA_FLAG_NEED_OTAG; 1105 softc->ordered_tag_count++; 1106 tag_code = MSG_ORDERED_Q_TAG; 1107 } else { 1108 tag_code = MSG_SIMPLE_Q_TAG; 1109 } 1110 scsi_read_write(&start_ccb->csio, 1111 /*retries*/da_retry_count, 1112 /*cbfcnp*/dadone, 1113 /*tag_action*/tag_code, 1114 /*read_op*/bp->bio_cmd == BIO_READ, 1115 /*byte2*/0, 1116 softc->minimum_cmd_size, 1117 /*lba*/bp->bio_pblkno, 1118 /*block_count*/bp->bio_bcount / 1119 softc->params.secsize, 1120 /*data_ptr*/ bp->bio_data, 1121 /*dxfer_len*/ bp->bio_bcount, 1122 /*sense_len*/SSD_FULL_SIZE, 1123 /*timeout*/da_default_timeout*1000); 1124 start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO; 1125 1126 /* 1127 * Block out any asyncronous callbacks 1128 * while we touch the pending ccb list. 1129 */ 1130 oldspl = splcam(); 1131 LIST_INSERT_HEAD(&softc->pending_ccbs, 1132 &start_ccb->ccb_h, periph_links.le); 1133 softc->outstanding_cmds++; 1134 splx(oldspl); 1135 1136 /* We expect a unit attention from this device */ 1137 if ((softc->flags & DA_FLAG_RETRY_UA) != 0) { 1138 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA; 1139 softc->flags &= ~DA_FLAG_RETRY_UA; 1140 } 1141 1142 start_ccb->ccb_h.ccb_bp = bp; 1143 bp = bioq_first(&softc->bio_queue); 1144 splx(s); 1145 1146 xpt_action(start_ccb); 1147 } 1148 1149 if (bp != NULL) { 1150 /* Have more work to do, so ensure we stay scheduled */ 1151 xpt_schedule(periph, /* XXX priority */1); 1152 } 1153 break; 1154 } 1155 case DA_STATE_PROBE: 1156 { 1157 struct ccb_scsiio *csio; 1158 struct scsi_read_capacity_data *rcap; 1159 1160 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap), 1161 M_TEMP, 1162 M_NOWAIT); 1163 if (rcap == NULL) { 1164 printf("dastart: Couldn't malloc read_capacity data\n"); 1165 /* da_free_periph??? */ 1166 break; 1167 } 1168 csio = &start_ccb->csio; 1169 scsi_read_capacity(csio, 1170 /*retries*/4, 1171 dadone, 1172 MSG_SIMPLE_Q_TAG, 1173 rcap, 1174 SSD_FULL_SIZE, 1175 /*timeout*/5000); 1176 start_ccb->ccb_h.ccb_bp = NULL; 1177 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE; 1178 xpt_action(start_ccb); 1179 break; 1180 } 1181 case DA_STATE_PROBE2: 1182 { 1183 struct ccb_scsiio *csio; 1184 struct scsi_read_capacity_data_long *rcaplong; 1185 1186 rcaplong = (struct scsi_read_capacity_data_long *) 1187 malloc(sizeof(*rcaplong), M_TEMP, M_NOWAIT); 1188 if (rcaplong == NULL) { 1189 printf("dastart: Couldn't malloc read_capacity data\n"); 1190 /* da_free_periph??? */ 1191 break; 1192 } 1193 csio = &start_ccb->csio; 1194 scsi_read_capacity_16(csio, 1195 /*retries*/ 4, 1196 /*cbfcnp*/ dadone, 1197 /*tag_action*/ MSG_SIMPLE_Q_TAG, 1198 /*lba*/ 0, 1199 /*reladr*/ 0, 1200 /*pmi*/ 0, 1201 rcaplong, 1202 /*sense_len*/ SSD_FULL_SIZE, 1203 /*timeout*/ 60000); 1204 start_ccb->ccb_h.ccb_bp = NULL; 1205 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2; 1206 xpt_action(start_ccb); 1207 break; 1208 } 1209 } 1210 } 1211 1212 static int 1213 cmd6workaround(union ccb *ccb) 1214 { 1215 struct scsi_rw_6 cmd6; 1216 struct scsi_rw_10 *cmd10; 1217 struct da_softc *softc; 1218 u_int8_t *cdb; 1219 int frozen; 1220 1221 cdb = ccb->csio.cdb_io.cdb_bytes; 1222 1223 /* Translation only possible if CDB is an array and cmd is R/W6 */ 1224 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 || 1225 (*cdb != READ_6 && *cdb != WRITE_6)) 1226 return 0; 1227 1228 xpt_print_path(ccb->ccb_h.path); 1229 printf("READ(6)/WRITE(6) not supported, " 1230 "increasing minimum_cmd_size to 10.\n"); 1231 softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc; 1232 softc->minimum_cmd_size = 10; 1233 1234 bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6)); 1235 cmd10 = (struct scsi_rw_10 *)cdb; 1236 cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10; 1237 cmd10->byte2 = 0; 1238 scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr); 1239 cmd10->reserved = 0; 1240 scsi_ulto2b(cmd6.length, cmd10->length); 1241 cmd10->control = cmd6.control; 1242 ccb->csio.cdb_len = sizeof(*cmd10); 1243 1244 /* Requeue request, unfreezing queue if necessary */ 1245 frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0; 1246 ccb->ccb_h.status = CAM_REQUEUE_REQ; 1247 xpt_action(ccb); 1248 if (frozen) { 1249 cam_release_devq(ccb->ccb_h.path, 1250 /*relsim_flags*/0, 1251 /*reduction*/0, 1252 /*timeout*/0, 1253 /*getcount_only*/0); 1254 } 1255 return (ERESTART); 1256 } 1257 1258 static void 1259 dadone(struct cam_periph *periph, union ccb *done_ccb) 1260 { 1261 struct da_softc *softc; 1262 struct ccb_scsiio *csio; 1263 1264 softc = (struct da_softc *)periph->softc; 1265 csio = &done_ccb->csio; 1266 switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) { 1267 case DA_CCB_BUFFER_IO: 1268 { 1269 struct bio *bp; 1270 int oldspl; 1271 1272 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1273 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1274 int error; 1275 int s; 1276 int sf; 1277 1278 if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0) 1279 sf = SF_RETRY_UA; 1280 else 1281 sf = 0; 1282 1283 error = daerror(done_ccb, CAM_RETRY_SELTO, sf); 1284 if (error == ERESTART) { 1285 /* 1286 * A retry was scheuled, so 1287 * just return. 1288 */ 1289 return; 1290 } 1291 if (error != 0) { 1292 1293 s = splbio(); 1294 1295 if (error == ENXIO) { 1296 /* 1297 * Catastrophic error. Mark our pack as 1298 * invalid. 1299 */ 1300 /* XXX See if this is really a media 1301 * change first. 1302 */ 1303 xpt_print_path(periph->path); 1304 printf("Invalidating pack\n"); 1305 softc->flags |= DA_FLAG_PACK_INVALID; 1306 } 1307 1308 /* 1309 * return all queued I/O with EIO, so that 1310 * the client can retry these I/Os in the 1311 * proper order should it attempt to recover. 1312 */ 1313 bioq_flush(&softc->bio_queue, NULL, EIO); 1314 splx(s); 1315 bp->bio_error = error; 1316 bp->bio_resid = bp->bio_bcount; 1317 bp->bio_flags |= BIO_ERROR; 1318 } else { 1319 bp->bio_resid = csio->resid; 1320 bp->bio_error = 0; 1321 if (bp->bio_resid != 0) 1322 bp->bio_flags |= BIO_ERROR; 1323 } 1324 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1325 cam_release_devq(done_ccb->ccb_h.path, 1326 /*relsim_flags*/0, 1327 /*reduction*/0, 1328 /*timeout*/0, 1329 /*getcount_only*/0); 1330 } else { 1331 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1332 panic("REQ_CMP with QFRZN"); 1333 bp->bio_resid = csio->resid; 1334 if (csio->resid > 0) 1335 bp->bio_flags |= BIO_ERROR; 1336 } 1337 1338 /* 1339 * Block out any asyncronous callbacks 1340 * while we touch the pending ccb list. 1341 */ 1342 oldspl = splcam(); 1343 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le); 1344 softc->outstanding_cmds--; 1345 if (softc->outstanding_cmds == 0) 1346 softc->flags |= DA_FLAG_WENT_IDLE; 1347 splx(oldspl); 1348 1349 biodone(bp); 1350 break; 1351 } 1352 case DA_CCB_PROBE: 1353 case DA_CCB_PROBE2: 1354 { 1355 struct scsi_read_capacity_data *rdcap; 1356 struct scsi_read_capacity_data_long *rcaplong; 1357 char announce_buf[80]; 1358 1359 rdcap = NULL; 1360 rcaplong = NULL; 1361 if (softc->state == DA_STATE_PROBE) 1362 rdcap =(struct scsi_read_capacity_data *)csio->data_ptr; 1363 else 1364 rcaplong = (struct scsi_read_capacity_data_long *) 1365 csio->data_ptr; 1366 1367 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 1368 struct disk_params *dp; 1369 uint32_t block_size; 1370 uint64_t maxsector; 1371 1372 if (softc->state == DA_STATE_PROBE) { 1373 block_size = scsi_4btoul(rdcap->length); 1374 maxsector = scsi_4btoul(rdcap->addr); 1375 1376 /* 1377 * According to SBC-2, if the standard 10 1378 * byte READ CAPACITY command returns 2^32, 1379 * we should issue the 16 byte version of 1380 * the command, since the device in question 1381 * has more sectors than can be represented 1382 * with the short version of the command. 1383 */ 1384 if (maxsector == 0xffffffff) { 1385 softc->state = DA_STATE_PROBE2; 1386 free(rdcap, M_TEMP); 1387 xpt_release_ccb(done_ccb); 1388 xpt_schedule(periph, /*priority*/5); 1389 return; 1390 } 1391 } else { 1392 block_size = scsi_4btoul(rcaplong->length); 1393 maxsector = scsi_8btou64(rcaplong->addr); 1394 } 1395 dasetgeom(periph, block_size, maxsector); 1396 dp = &softc->params; 1397 snprintf(announce_buf, sizeof(announce_buf), 1398 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)", 1399 (uintmax_t) (((uintmax_t)dp->secsize * 1400 dp->sectors) / (1024*1024)), 1401 (uintmax_t)dp->sectors, 1402 dp->secsize, dp->heads, dp->secs_per_track, 1403 dp->cylinders); 1404 } else { 1405 int error; 1406 1407 announce_buf[0] = '\0'; 1408 1409 /* 1410 * Retry any UNIT ATTENTION type errors. They 1411 * are expected at boot. 1412 */ 1413 error = daerror(done_ccb, CAM_RETRY_SELTO, 1414 SF_RETRY_UA|SF_NO_PRINT); 1415 if (error == ERESTART) { 1416 /* 1417 * A retry was scheuled, so 1418 * just return. 1419 */ 1420 return; 1421 } else if (error != 0) { 1422 struct scsi_sense_data *sense; 1423 int asc, ascq; 1424 int sense_key, error_code; 1425 int have_sense; 1426 cam_status status; 1427 struct ccb_getdev cgd; 1428 1429 /* Don't wedge this device's queue */ 1430 status = done_ccb->ccb_h.status; 1431 if ((status & CAM_DEV_QFRZN) != 0) 1432 cam_release_devq(done_ccb->ccb_h.path, 1433 /*relsim_flags*/0, 1434 /*reduction*/0, 1435 /*timeout*/0, 1436 /*getcount_only*/0); 1437 1438 1439 xpt_setup_ccb(&cgd.ccb_h, 1440 done_ccb->ccb_h.path, 1441 /* priority */ 1); 1442 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 1443 xpt_action((union ccb *)&cgd); 1444 1445 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0) 1446 || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0) 1447 || ((status & CAM_AUTOSNS_VALID) == 0)) 1448 have_sense = FALSE; 1449 else 1450 have_sense = TRUE; 1451 1452 if (have_sense) { 1453 sense = &csio->sense_data; 1454 scsi_extract_sense(sense, &error_code, 1455 &sense_key, 1456 &asc, &ascq); 1457 } 1458 /* 1459 * Attach to anything that claims to be a 1460 * direct access or optical disk device, 1461 * as long as it doesn't return a "Logical 1462 * unit not supported" (0x25) error. 1463 */ 1464 if ((have_sense) && (asc != 0x25) 1465 && (error_code == SSD_CURRENT_ERROR)) { 1466 const char *sense_key_desc; 1467 const char *asc_desc; 1468 1469 scsi_sense_desc(sense_key, asc, ascq, 1470 &cgd.inq_data, 1471 &sense_key_desc, 1472 &asc_desc); 1473 snprintf(announce_buf, 1474 sizeof(announce_buf), 1475 "Attempt to query device " 1476 "size failed: %s, %s", 1477 sense_key_desc, 1478 asc_desc); 1479 } else { 1480 if (have_sense) 1481 scsi_sense_print( 1482 &done_ccb->csio); 1483 else { 1484 xpt_print_path(periph->path); 1485 printf("got CAM status %#x\n", 1486 done_ccb->ccb_h.status); 1487 } 1488 1489 xpt_print_path(periph->path); 1490 printf("fatal error, failed" 1491 " to attach to device\n"); 1492 1493 /* 1494 * Free up resources. 1495 */ 1496 cam_periph_invalidate(periph); 1497 } 1498 } 1499 } 1500 free(csio->data_ptr, M_TEMP); 1501 if (announce_buf[0] != '\0') { 1502 xpt_announce_periph(periph, announce_buf); 1503 /* 1504 * Create our sysctl variables, now that we know 1505 * we have successfully attached. 1506 */ 1507 taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task); 1508 } 1509 softc->state = DA_STATE_NORMAL; 1510 /* 1511 * Since our peripheral may be invalidated by an error 1512 * above or an external event, we must release our CCB 1513 * before releasing the probe lock on the peripheral. 1514 * The peripheral will only go away once the last lock 1515 * is removed, and we need it around for the CCB release 1516 * operation. 1517 */ 1518 xpt_release_ccb(done_ccb); 1519 cam_periph_unlock(periph); 1520 return; 1521 } 1522 case DA_CCB_WAITING: 1523 { 1524 /* Caller will release the CCB */ 1525 wakeup(&done_ccb->ccb_h.cbfcnp); 1526 return; 1527 } 1528 case DA_CCB_DUMP: 1529 /* No-op. We're polling */ 1530 return; 1531 default: 1532 break; 1533 } 1534 xpt_release_ccb(done_ccb); 1535 } 1536 1537 static int 1538 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 1539 { 1540 struct da_softc *softc; 1541 struct cam_periph *periph; 1542 int error; 1543 1544 periph = xpt_path_periph(ccb->ccb_h.path); 1545 softc = (struct da_softc *)periph->softc; 1546 1547 /* 1548 * Automatically detect devices that do not support 1549 * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs. 1550 */ 1551 error = 0; 1552 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) { 1553 error = cmd6workaround(ccb); 1554 } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) == 1555 CAM_SCSI_STATUS_ERROR) 1556 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID) 1557 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) 1558 && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0) 1559 && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) { 1560 int sense_key, error_code, asc, ascq; 1561 1562 scsi_extract_sense(&ccb->csio.sense_data, 1563 &error_code, &sense_key, &asc, &ascq); 1564 if (sense_key == SSD_KEY_ILLEGAL_REQUEST) 1565 error = cmd6workaround(ccb); 1566 } 1567 if (error == ERESTART) 1568 return (ERESTART); 1569 1570 /* 1571 * XXX 1572 * Until we have a better way of doing pack validation, 1573 * don't treat UAs as errors. 1574 */ 1575 sense_flags |= SF_RETRY_UA; 1576 return(cam_periph_error(ccb, cam_flags, sense_flags, 1577 &softc->saved_ccb)); 1578 } 1579 1580 static void 1581 daprevent(struct cam_periph *periph, int action) 1582 { 1583 struct da_softc *softc; 1584 union ccb *ccb; 1585 int error; 1586 1587 softc = (struct da_softc *)periph->softc; 1588 1589 if (((action == PR_ALLOW) 1590 && (softc->flags & DA_FLAG_PACK_LOCKED) == 0) 1591 || ((action == PR_PREVENT) 1592 && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) { 1593 return; 1594 } 1595 1596 ccb = cam_periph_getccb(periph, /*priority*/1); 1597 1598 scsi_prevent(&ccb->csio, 1599 /*retries*/1, 1600 /*cbcfp*/dadone, 1601 MSG_SIMPLE_Q_TAG, 1602 action, 1603 SSD_FULL_SIZE, 1604 5000); 1605 1606 error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO, 1607 SF_RETRY_UA, softc->disk->d_devstat); 1608 1609 if (error == 0) { 1610 if (action == PR_ALLOW) 1611 softc->flags &= ~DA_FLAG_PACK_LOCKED; 1612 else 1613 softc->flags |= DA_FLAG_PACK_LOCKED; 1614 } 1615 1616 xpt_release_ccb(ccb); 1617 } 1618 1619 static int 1620 dagetcapacity(struct cam_periph *periph) 1621 { 1622 struct da_softc *softc; 1623 union ccb *ccb; 1624 struct scsi_read_capacity_data *rcap; 1625 struct scsi_read_capacity_data_long *rcaplong; 1626 uint32_t block_len; 1627 uint64_t maxsector; 1628 int error; 1629 1630 softc = (struct da_softc *)periph->softc; 1631 block_len = 0; 1632 maxsector = 0; 1633 error = 0; 1634 1635 /* Do a read capacity */ 1636 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcaplong), 1637 M_TEMP, 1638 M_WAITOK); 1639 1640 ccb = cam_periph_getccb(periph, /*priority*/1); 1641 scsi_read_capacity(&ccb->csio, 1642 /*retries*/4, 1643 /*cbfncp*/dadone, 1644 MSG_SIMPLE_Q_TAG, 1645 rcap, 1646 SSD_FULL_SIZE, 1647 /*timeout*/60000); 1648 ccb->ccb_h.ccb_bp = NULL; 1649 1650 error = cam_periph_runccb(ccb, daerror, 1651 /*cam_flags*/CAM_RETRY_SELTO, 1652 /*sense_flags*/SF_RETRY_UA, 1653 softc->disk->d_devstat); 1654 1655 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1656 cam_release_devq(ccb->ccb_h.path, 1657 /*relsim_flags*/0, 1658 /*reduction*/0, 1659 /*timeout*/0, 1660 /*getcount_only*/0); 1661 1662 if (error == 0) { 1663 block_len = scsi_4btoul(rcap->length); 1664 maxsector = scsi_4btoul(rcap->addr); 1665 1666 if (maxsector != 0xffffffff) 1667 goto done; 1668 } else 1669 goto done; 1670 1671 rcaplong = (struct scsi_read_capacity_data_long *)rcap; 1672 1673 scsi_read_capacity_16(&ccb->csio, 1674 /*retries*/ 4, 1675 /*cbfcnp*/ dadone, 1676 /*tag_action*/ MSG_SIMPLE_Q_TAG, 1677 /*lba*/ 0, 1678 /*reladr*/ 0, 1679 /*pmi*/ 0, 1680 rcaplong, 1681 /*sense_len*/ SSD_FULL_SIZE, 1682 /*timeout*/ 60000); 1683 ccb->ccb_h.ccb_bp = NULL; 1684 1685 error = cam_periph_runccb(ccb, daerror, 1686 /*cam_flags*/CAM_RETRY_SELTO, 1687 /*sense_flags*/SF_RETRY_UA, 1688 softc->disk->d_devstat); 1689 1690 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1691 cam_release_devq(ccb->ccb_h.path, 1692 /*relsim_flags*/0, 1693 /*reduction*/0, 1694 /*timeout*/0, 1695 /*getcount_only*/0); 1696 1697 if (error == 0) { 1698 block_len = scsi_4btoul(rcaplong->length); 1699 maxsector = scsi_8btou64(rcaplong->addr); 1700 } 1701 1702 done: 1703 1704 if (error == 0) 1705 dasetgeom(periph, block_len, maxsector); 1706 1707 xpt_release_ccb(ccb); 1708 1709 free(rcap, M_TEMP); 1710 1711 return (error); 1712 } 1713 1714 static void 1715 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector) 1716 { 1717 struct ccb_calc_geometry ccg; 1718 struct da_softc *softc; 1719 struct disk_params *dp; 1720 1721 softc = (struct da_softc *)periph->softc; 1722 1723 dp = &softc->params; 1724 dp->secsize = block_len; 1725 dp->sectors = maxsector + 1; 1726 /* 1727 * Have the controller provide us with a geometry 1728 * for this disk. The only time the geometry 1729 * matters is when we boot and the controller 1730 * is the only one knowledgeable enough to come 1731 * up with something that will make this a bootable 1732 * device. 1733 */ 1734 xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1); 1735 ccg.ccb_h.func_code = XPT_CALC_GEOMETRY; 1736 ccg.block_size = dp->secsize; 1737 ccg.volume_size = dp->sectors; 1738 ccg.heads = 0; 1739 ccg.secs_per_track = 0; 1740 ccg.cylinders = 0; 1741 xpt_action((union ccb*)&ccg); 1742 dp->heads = ccg.heads; 1743 dp->secs_per_track = ccg.secs_per_track; 1744 dp->cylinders = ccg.cylinders; 1745 } 1746 1747 static void 1748 dasendorderedtag(void *arg) 1749 { 1750 struct da_softc *softc; 1751 int s; 1752 1753 for (softc = SLIST_FIRST(&softc_list); 1754 softc != NULL; 1755 softc = SLIST_NEXT(softc, links)) { 1756 s = splsoftcam(); 1757 if ((softc->ordered_tag_count == 0) 1758 && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) { 1759 softc->flags |= DA_FLAG_NEED_OTAG; 1760 } 1761 if (softc->outstanding_cmds > 0) 1762 softc->flags &= ~DA_FLAG_WENT_IDLE; 1763 1764 softc->ordered_tag_count = 0; 1765 splx(s); 1766 } 1767 /* Queue us up again */ 1768 timeout(dasendorderedtag, NULL, 1769 (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL); 1770 } 1771 1772 /* 1773 * Step through all DA peripheral drivers, and if the device is still open, 1774 * sync the disk cache to physical media. 1775 */ 1776 static void 1777 dashutdown(void * arg, int howto) 1778 { 1779 struct cam_periph *periph; 1780 struct da_softc *softc; 1781 1782 TAILQ_FOREACH(periph, &dadriver.units, unit_links) { 1783 union ccb ccb; 1784 softc = (struct da_softc *)periph->softc; 1785 1786 /* 1787 * We only sync the cache if the drive is still open, and 1788 * if the drive is capable of it.. 1789 */ 1790 if (((softc->flags & DA_FLAG_OPEN) == 0) 1791 || (softc->quirks & DA_Q_NO_SYNC_CACHE)) 1792 continue; 1793 1794 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1); 1795 1796 ccb.ccb_h.ccb_state = DA_CCB_DUMP; 1797 scsi_synchronize_cache(&ccb.csio, 1798 /*retries*/1, 1799 /*cbfcnp*/dadone, 1800 MSG_SIMPLE_Q_TAG, 1801 /*begin_lba*/0, /* whole disk */ 1802 /*lb_count*/0, 1803 SSD_FULL_SIZE, 1804 60 * 60 * 1000); 1805 1806 xpt_polled_action(&ccb); 1807 1808 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1809 if (((ccb.ccb_h.status & CAM_STATUS_MASK) == 1810 CAM_SCSI_STATUS_ERROR) 1811 && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){ 1812 int error_code, sense_key, asc, ascq; 1813 1814 scsi_extract_sense(&ccb.csio.sense_data, 1815 &error_code, &sense_key, 1816 &asc, &ascq); 1817 1818 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 1819 scsi_sense_print(&ccb.csio); 1820 } else { 1821 xpt_print_path(periph->path); 1822 printf("Synchronize cache failed, status " 1823 "== 0x%x, scsi status == 0x%x\n", 1824 ccb.ccb_h.status, ccb.csio.scsi_status); 1825 } 1826 } 1827 1828 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0) 1829 cam_release_devq(ccb.ccb_h.path, 1830 /*relsim_flags*/0, 1831 /*reduction*/0, 1832 /*timeout*/0, 1833 /*getcount_only*/0); 1834 1835 } 1836 } 1837 1838 #else /* !_KERNEL */ 1839 1840 /* 1841 * XXX This is only left out of the kernel build to silence warnings. If, 1842 * for some reason this function is used in the kernel, the ifdefs should 1843 * be moved so it is included both in the kernel and userland. 1844 */ 1845 void 1846 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries, 1847 void (*cbfcnp)(struct cam_periph *, union ccb *), 1848 u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave, 1849 u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len, 1850 u_int32_t timeout) 1851 { 1852 struct scsi_format_unit *scsi_cmd; 1853 1854 scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes; 1855 scsi_cmd->opcode = FORMAT_UNIT; 1856 scsi_cmd->byte2 = byte2; 1857 scsi_ulto2b(ileave, scsi_cmd->interleave); 1858 1859 cam_fill_csio(csio, 1860 retries, 1861 cbfcnp, 1862 /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 1863 tag_action, 1864 data_ptr, 1865 dxfer_len, 1866 sense_len, 1867 sizeof(*scsi_cmd), 1868 timeout); 1869 } 1870 1871 #endif /* _KERNEL */
Cache object: 6da1b039964445b731fc76d24cc19748
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