Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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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/6.0/sys/cam/scsi/scsi_da.c 147176 2005-06-09 17:35:04Z pjd $"); 31 32 #include <sys/param.h> 33 34 #ifdef _KERNEL 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/bio.h> 38 #include <sys/sysctl.h> 39 #include <sys/taskqueue.h> 40 #endif /* _KERNEL */ 41 42 #include <sys/devicestat.h> 43 #include <sys/conf.h> 44 #include <sys/eventhandler.h> 45 #include <sys/malloc.h> 46 #include <sys/cons.h> 47 48 #include <machine/md_var.h> 49 50 #include <vm/vm.h> 51 #include <vm/pmap.h> 52 53 #include <geom/geom_disk.h> 54 55 #ifndef _KERNEL 56 #include <stdio.h> 57 #include <string.h> 58 #endif /* _KERNEL */ 59 60 #include <cam/cam.h> 61 #include <cam/cam_ccb.h> 62 #include <cam/cam_periph.h> 63 #include <cam/cam_xpt_periph.h> 64 65 #include <cam/scsi/scsi_message.h> 66 67 #ifndef _KERNEL 68 #include <cam/scsi/scsi_da.h> 69 #endif /* !_KERNEL */ 70 71 #ifdef _KERNEL 72 typedef enum { 73 DA_STATE_PROBE, 74 DA_STATE_PROBE2, 75 DA_STATE_NORMAL 76 } da_state; 77 78 typedef enum { 79 DA_FLAG_PACK_INVALID = 0x001, 80 DA_FLAG_NEW_PACK = 0x002, 81 DA_FLAG_PACK_LOCKED = 0x004, 82 DA_FLAG_PACK_REMOVABLE = 0x008, 83 DA_FLAG_TAGGED_QUEUING = 0x010, 84 DA_FLAG_NEED_OTAG = 0x020, 85 DA_FLAG_WENT_IDLE = 0x040, 86 DA_FLAG_RETRY_UA = 0x080, 87 DA_FLAG_OPEN = 0x100, 88 DA_FLAG_SCTX_INIT = 0x200 89 } da_flags; 90 91 typedef enum { 92 DA_Q_NONE = 0x00, 93 DA_Q_NO_SYNC_CACHE = 0x01, 94 DA_Q_NO_6_BYTE = 0x02, 95 DA_Q_NO_PREVENT = 0x04 96 } da_quirks; 97 98 typedef enum { 99 DA_CCB_PROBE = 0x01, 100 DA_CCB_PROBE2 = 0x02, 101 DA_CCB_BUFFER_IO = 0x03, 102 DA_CCB_WAITING = 0x04, 103 DA_CCB_DUMP = 0x05, 104 DA_CCB_TYPE_MASK = 0x0F, 105 DA_CCB_RETRY_UA = 0x10 106 } da_ccb_state; 107 108 /* Offsets into our private area for storing information */ 109 #define ccb_state ppriv_field0 110 #define ccb_bp ppriv_ptr1 111 112 struct disk_params { 113 u_int8_t heads; 114 u_int32_t cylinders; 115 u_int8_t secs_per_track; 116 u_int32_t secsize; /* Number of bytes/sector */ 117 u_int64_t sectors; /* total number sectors */ 118 }; 119 120 struct da_softc { 121 struct bio_queue_head bio_queue; 122 SLIST_ENTRY(da_softc) links; 123 LIST_HEAD(, ccb_hdr) pending_ccbs; 124 da_state state; 125 da_flags flags; 126 da_quirks quirks; 127 int minimum_cmd_size; 128 int ordered_tag_count; 129 int outstanding_cmds; 130 struct disk_params params; 131 struct disk *disk; 132 union ccb saved_ccb; 133 struct task sysctl_task; 134 struct sysctl_ctx_list sysctl_ctx; 135 struct sysctl_oid *sysctl_tree; 136 }; 137 138 struct da_quirk_entry { 139 struct scsi_inquiry_pattern inq_pat; 140 da_quirks quirks; 141 }; 142 143 static const char quantum[] = "QUANTUM"; 144 static const char microp[] = "MICROP"; 145 146 static struct da_quirk_entry da_quirk_table[] = 147 { 148 /* SPI, FC devices */ 149 { 150 /* 151 * Fujitsu M2513A MO drives. 152 * Tested devices: M2513A2 firmware versions 1200 & 1300. 153 * (dip switch selects whether T_DIRECT or T_OPTICAL device) 154 * Reported by: W.Scholten <whs@xs4all.nl> 155 */ 156 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"}, 157 /*quirks*/ DA_Q_NO_SYNC_CACHE 158 }, 159 { 160 /* See above. */ 161 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"}, 162 /*quirks*/ DA_Q_NO_SYNC_CACHE 163 }, 164 { 165 /* 166 * This particular Fujitsu drive doesn't like the 167 * synchronize cache command. 168 * Reported by: Tom Jackson <toj@gorilla.net> 169 */ 170 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"}, 171 /*quirks*/ DA_Q_NO_SYNC_CACHE 172 173 }, 174 { 175 /* 176 * This drive doesn't like the synchronize cache command 177 * either. Reported by: Matthew Jacob <mjacob@feral.com> 178 * in NetBSD PR kern/6027, August 24, 1998. 179 */ 180 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"}, 181 /*quirks*/ DA_Q_NO_SYNC_CACHE 182 }, 183 { 184 /* 185 * This drive doesn't like the synchronize cache command 186 * either. Reported by: Hellmuth Michaelis (hm@kts.org) 187 * (PR 8882). 188 */ 189 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"}, 190 /*quirks*/ DA_Q_NO_SYNC_CACHE 191 }, 192 { 193 /* 194 * Doesn't like the synchronize cache command. 195 * Reported by: Blaz Zupan <blaz@gold.amis.net> 196 */ 197 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"}, 198 /*quirks*/ DA_Q_NO_SYNC_CACHE 199 }, 200 { 201 /* 202 * Doesn't like the synchronize cache command. 203 * Reported by: Blaz Zupan <blaz@gold.amis.net> 204 */ 205 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"}, 206 /*quirks*/ DA_Q_NO_SYNC_CACHE 207 }, 208 { 209 /* 210 * Doesn't like the synchronize cache command. 211 */ 212 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"}, 213 /*quirks*/ DA_Q_NO_SYNC_CACHE 214 }, 215 { 216 /* 217 * Doesn't like the synchronize cache command. 218 * Reported by: walter@pelissero.de 219 */ 220 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"}, 221 /*quirks*/ DA_Q_NO_SYNC_CACHE 222 }, 223 { 224 /* 225 * Doesn't work correctly with 6 byte reads/writes. 226 * Returns illegal request, and points to byte 9 of the 227 * 6-byte CDB. 228 * Reported by: Adam McDougall <bsdx@spawnet.com> 229 */ 230 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"}, 231 /*quirks*/ DA_Q_NO_6_BYTE 232 }, 233 { 234 /* See above. */ 235 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"}, 236 /*quirks*/ DA_Q_NO_6_BYTE 237 }, 238 { 239 /* 240 * Doesn't like the synchronize cache command. 241 * Reported by: walter@pelissero.de 242 */ 243 {T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"}, 244 /*quirks*/ DA_Q_NO_SYNC_CACHE 245 }, 246 { 247 /* 248 * The CISS RAID controllers do not support SYNC_CACHE 249 */ 250 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"}, 251 /*quirks*/ DA_Q_NO_SYNC_CACHE 252 }, 253 /* USB mass storage devices supported by umass(4) */ 254 { 255 /* 256 * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player 257 * PR: kern/51675 258 */ 259 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"}, 260 /*quirks*/ DA_Q_NO_SYNC_CACHE 261 }, 262 { 263 /* 264 * Power Quotient Int. (PQI) USB flash key 265 * PR: kern/53067 266 */ 267 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "USB Flash Disk*", 268 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE 269 }, 270 { 271 /* 272 * Creative Nomad MUVO mp3 player (USB) 273 * PR: kern/53094 274 */ 275 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"}, 276 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT 277 }, 278 { 279 /* 280 * Jungsoft NEXDISK USB flash key 281 * PR: kern/54737 282 */ 283 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"}, 284 /*quirks*/ DA_Q_NO_SYNC_CACHE 285 }, 286 { 287 /* 288 * FreeDik USB Mini Data Drive 289 * PR: kern/54786 290 */ 291 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FreeDik*", "Mini Data Drive", 292 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE 293 }, 294 { 295 /* 296 * Sigmatel USB Flash MP3 Player 297 * PR: kern/57046 298 */ 299 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"}, 300 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT 301 }, 302 { 303 /* 304 * Neuros USB Digital Audio Computer 305 * PR: kern/63645 306 */ 307 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NEUROS", "dig. audio comp.", 308 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE 309 }, 310 { 311 /* 312 * SEAGRAND NP-900 MP3 Player 313 * PR: kern/64563 314 */ 315 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"}, 316 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT 317 }, 318 { 319 /* 320 * iRiver iFP MP3 player (with UMS Firmware) 321 * PR: kern/54881, i386/63941, kern/66124 322 */ 323 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"}, 324 /*quirks*/ DA_Q_NO_SYNC_CACHE 325 }, 326 { 327 /* 328 * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01 329 * PR: kern/70158 330 */ 331 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "Nex*", "*"}, 332 /*quirks*/ DA_Q_NO_SYNC_CACHE 333 }, 334 { 335 /* 336 * ZICPlay USB MP3 Player with FM 337 * PR: kern/75057 338 */ 339 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ACTIONS*" , "USB DISK*", "*"}, 340 /*quirks*/ DA_Q_NO_SYNC_CACHE 341 }, 342 { 343 /* 344 * TEAC USB floppy mechanisms 345 */ 346 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TEAC" , "FD-05*", "*"}, 347 /*quirks*/ DA_Q_NO_SYNC_CACHE 348 }, 349 { 350 /* 351 * Kingston DataTraveler II+ USB Pen-Drive. 352 * Reported by: Pawel Jakub Dawidek <pjd@FreeBSD.org> 353 */ 354 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston" , "DataTraveler II+", "*"}, 355 /*quirks*/ DA_Q_NO_SYNC_CACHE 356 }, 357 }; 358 359 static disk_strategy_t dastrategy; 360 static dumper_t dadump; 361 static periph_init_t dainit; 362 static void daasync(void *callback_arg, u_int32_t code, 363 struct cam_path *path, void *arg); 364 static void dasysctlinit(void *context, int pending); 365 static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS); 366 static periph_ctor_t daregister; 367 static periph_dtor_t dacleanup; 368 static periph_start_t dastart; 369 static periph_oninv_t daoninvalidate; 370 static void dadone(struct cam_periph *periph, 371 union ccb *done_ccb); 372 static int daerror(union ccb *ccb, u_int32_t cam_flags, 373 u_int32_t sense_flags); 374 static void daprevent(struct cam_periph *periph, int action); 375 static int dagetcapacity(struct cam_periph *periph); 376 static void dasetgeom(struct cam_periph *periph, uint32_t block_len, 377 uint64_t maxsector); 378 static timeout_t dasendorderedtag; 379 static void dashutdown(void *arg, int howto); 380 381 #ifndef DA_DEFAULT_TIMEOUT 382 #define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */ 383 #endif 384 385 #ifndef DA_DEFAULT_RETRY 386 #define DA_DEFAULT_RETRY 4 387 #endif 388 389 static int da_retry_count = DA_DEFAULT_RETRY; 390 static int da_default_timeout = DA_DEFAULT_TIMEOUT; 391 392 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0, 393 "CAM Direct Access Disk driver"); 394 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW, 395 &da_retry_count, 0, "Normal I/O retry count"); 396 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count); 397 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW, 398 &da_default_timeout, 0, "Normal I/O timeout (in seconds)"); 399 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout); 400 401 /* 402 * DA_ORDEREDTAG_INTERVAL determines how often, relative 403 * to the default timeout, we check to see whether an ordered 404 * tagged transaction is appropriate to prevent simple tag 405 * starvation. Since we'd like to ensure that there is at least 406 * 1/2 of the timeout length left for a starved transaction to 407 * complete after we've sent an ordered tag, we must poll at least 408 * four times in every timeout period. This takes care of the worst 409 * case where a starved transaction starts during an interval that 410 * meets the requirement "don't send an ordered tag" test so it takes 411 * us two intervals to determine that a tag must be sent. 412 */ 413 #ifndef DA_ORDEREDTAG_INTERVAL 414 #define DA_ORDEREDTAG_INTERVAL 4 415 #endif 416 417 static struct periph_driver dadriver = 418 { 419 dainit, "da", 420 TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0 421 }; 422 423 PERIPHDRIVER_DECLARE(da, dadriver); 424 425 static SLIST_HEAD(,da_softc) softc_list; 426 427 static int 428 daopen(struct disk *dp) 429 { 430 struct cam_periph *periph; 431 struct da_softc *softc; 432 int unit; 433 int error; 434 int s; 435 436 s = splsoftcam(); 437 periph = (struct cam_periph *)dp->d_drv1; 438 if (periph == NULL) { 439 splx(s); 440 return (ENXIO); 441 } 442 unit = periph->unit_number; 443 444 softc = (struct da_softc *)periph->softc; 445 446 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 447 ("daopen: disk=%s%d (unit %d)\n", dp->d_name, dp->d_unit, 448 unit)); 449 450 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) 451 return (error); /* error code from tsleep */ 452 453 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 454 return(ENXIO); 455 softc->flags |= DA_FLAG_OPEN; 456 457 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) { 458 /* Invalidate our pack information. */ 459 softc->flags &= ~DA_FLAG_PACK_INVALID; 460 } 461 splx(s); 462 463 error = dagetcapacity(periph); 464 465 if (error == 0) { 466 467 softc->disk->d_sectorsize = softc->params.secsize; 468 softc->disk->d_mediasize = softc->params.secsize * (off_t)softc->params.sectors; 469 /* XXX: these are not actually "firmware" values, so they may be wrong */ 470 softc->disk->d_fwsectors = softc->params.secs_per_track; 471 softc->disk->d_fwheads = softc->params.heads; 472 softc->disk->d_devstat->block_size = softc->params.secsize; 473 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE; 474 } 475 476 if (error == 0) { 477 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 && 478 (softc->quirks & DA_Q_NO_PREVENT) == 0) 479 daprevent(periph, PR_PREVENT); 480 } else { 481 softc->flags &= ~DA_FLAG_OPEN; 482 cam_periph_release(periph); 483 } 484 cam_periph_unlock(periph); 485 return (error); 486 } 487 488 static int 489 daclose(struct disk *dp) 490 { 491 struct cam_periph *periph; 492 struct da_softc *softc; 493 int error; 494 495 periph = (struct cam_periph *)dp->d_drv1; 496 if (periph == NULL) 497 return (ENXIO); 498 499 softc = (struct da_softc *)periph->softc; 500 501 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 502 return (error); /* error code from tsleep */ 503 } 504 505 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) { 506 union ccb *ccb; 507 508 ccb = cam_periph_getccb(periph, /*priority*/1); 509 510 scsi_synchronize_cache(&ccb->csio, 511 /*retries*/1, 512 /*cbfcnp*/dadone, 513 MSG_SIMPLE_Q_TAG, 514 /*begin_lba*/0,/* Cover the whole disk */ 515 /*lb_count*/0, 516 SSD_FULL_SIZE, 517 5 * 60 * 1000); 518 519 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0, 520 /*sense_flags*/SF_RETRY_UA, 521 softc->disk->d_devstat); 522 523 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 524 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == 525 CAM_SCSI_STATUS_ERROR) { 526 int asc, ascq; 527 int sense_key, error_code; 528 529 scsi_extract_sense(&ccb->csio.sense_data, 530 &error_code, 531 &sense_key, 532 &asc, &ascq); 533 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 534 scsi_sense_print(&ccb->csio); 535 } else { 536 xpt_print_path(periph->path); 537 printf("Synchronize cache failed, status " 538 "== 0x%x, scsi status == 0x%x\n", 539 ccb->csio.ccb_h.status, 540 ccb->csio.scsi_status); 541 } 542 } 543 544 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 545 cam_release_devq(ccb->ccb_h.path, 546 /*relsim_flags*/0, 547 /*reduction*/0, 548 /*timeout*/0, 549 /*getcount_only*/0); 550 551 xpt_release_ccb(ccb); 552 553 } 554 555 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) { 556 if ((softc->quirks & DA_Q_NO_PREVENT) == 0) 557 daprevent(periph, PR_ALLOW); 558 /* 559 * If we've got removeable media, mark the blocksize as 560 * unavailable, since it could change when new media is 561 * inserted. 562 */ 563 softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE; 564 } 565 566 softc->flags &= ~DA_FLAG_OPEN; 567 cam_periph_unlock(periph); 568 cam_periph_release(periph); 569 return (0); 570 } 571 572 /* 573 * Actually translate the requested transfer into one the physical driver 574 * can understand. The transfer is described by a buf and will include 575 * only one physical transfer. 576 */ 577 static void 578 dastrategy(struct bio *bp) 579 { 580 struct cam_periph *periph; 581 struct da_softc *softc; 582 int s; 583 584 periph = (struct cam_periph *)bp->bio_disk->d_drv1; 585 if (periph == NULL) { 586 biofinish(bp, NULL, ENXIO); 587 return; 588 } 589 softc = (struct da_softc *)periph->softc; 590 #if 0 591 /* 592 * check it's not too big a transfer for our adapter 593 */ 594 scsi_minphys(bp,&sd_switch); 595 #endif 596 597 /* 598 * Mask interrupts so that the pack cannot be invalidated until 599 * after we are in the queue. Otherwise, we might not properly 600 * clean up one of the buffers. 601 */ 602 s = splbio(); 603 604 /* 605 * If the device has been made invalid, error out 606 */ 607 if ((softc->flags & DA_FLAG_PACK_INVALID)) { 608 splx(s); 609 biofinish(bp, NULL, ENXIO); 610 return; 611 } 612 613 /* 614 * Place it in the queue of disk activities for this disk 615 */ 616 bioq_disksort(&softc->bio_queue, bp); 617 618 splx(s); 619 620 /* 621 * Schedule ourselves for performing the work. 622 */ 623 xpt_schedule(periph, /* XXX priority */1); 624 625 return; 626 } 627 628 static int 629 dadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length) 630 { 631 struct cam_periph *periph; 632 struct da_softc *softc; 633 u_int secsize; 634 struct ccb_scsiio csio; 635 struct disk *dp; 636 637 dp = arg; 638 periph = dp->d_drv1; 639 if (periph == NULL) 640 return (ENXIO); 641 softc = (struct da_softc *)periph->softc; 642 secsize = softc->params.secsize; 643 644 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) 645 return (ENXIO); 646 647 if (length > 0) { 648 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1); 649 csio.ccb_h.ccb_state = DA_CCB_DUMP; 650 scsi_read_write(&csio, 651 /*retries*/1, 652 dadone, 653 MSG_ORDERED_Q_TAG, 654 /*read*/FALSE, 655 /*byte2*/0, 656 /*minimum_cmd_size*/ softc->minimum_cmd_size, 657 offset / secsize, 658 length / secsize, 659 /*data_ptr*/(u_int8_t *) virtual, 660 /*dxfer_len*/length, 661 /*sense_len*/SSD_FULL_SIZE, 662 DA_DEFAULT_TIMEOUT * 1000); 663 xpt_polled_action((union ccb *)&csio); 664 665 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 666 printf("Aborting dump due to I/O error.\n"); 667 if ((csio.ccb_h.status & CAM_STATUS_MASK) == 668 CAM_SCSI_STATUS_ERROR) 669 scsi_sense_print(&csio); 670 else 671 printf("status == 0x%x, scsi status == 0x%x\n", 672 csio.ccb_h.status, csio.scsi_status); 673 return(EIO); 674 } 675 return(0); 676 } 677 678 /* 679 * Sync the disk cache contents to the physical media. 680 */ 681 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) { 682 683 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1); 684 csio.ccb_h.ccb_state = DA_CCB_DUMP; 685 scsi_synchronize_cache(&csio, 686 /*retries*/1, 687 /*cbfcnp*/dadone, 688 MSG_SIMPLE_Q_TAG, 689 /*begin_lba*/0,/* Cover the whole disk */ 690 /*lb_count*/0, 691 SSD_FULL_SIZE, 692 5 * 60 * 1000); 693 xpt_polled_action((union ccb *)&csio); 694 695 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 696 if ((csio.ccb_h.status & CAM_STATUS_MASK) == 697 CAM_SCSI_STATUS_ERROR) { 698 int asc, ascq; 699 int sense_key, error_code; 700 701 scsi_extract_sense(&csio.sense_data, 702 &error_code, 703 &sense_key, 704 &asc, &ascq); 705 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 706 scsi_sense_print(&csio); 707 } else { 708 xpt_print_path(periph->path); 709 printf("Synchronize cache failed, status " 710 "== 0x%x, scsi status == 0x%x\n", 711 csio.ccb_h.status, csio.scsi_status); 712 } 713 } 714 } 715 return (0); 716 } 717 718 static void 719 dainit(void) 720 { 721 cam_status status; 722 struct cam_path *path; 723 724 SLIST_INIT(&softc_list); 725 726 /* 727 * Install a global async callback. This callback will 728 * receive async callbacks like "new device found". 729 */ 730 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID, 731 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 732 733 if (status == CAM_REQ_CMP) { 734 struct ccb_setasync csa; 735 736 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5); 737 csa.ccb_h.func_code = XPT_SASYNC_CB; 738 csa.event_enable = AC_FOUND_DEVICE; 739 csa.callback = daasync; 740 csa.callback_arg = NULL; 741 xpt_action((union ccb *)&csa); 742 status = csa.ccb_h.status; 743 xpt_free_path(path); 744 } 745 746 if (status != CAM_REQ_CMP) { 747 printf("da: Failed to attach master async callback " 748 "due to status 0x%x!\n", status); 749 } else { 750 751 /* 752 * Schedule a periodic event to occasionally send an 753 * ordered tag to a device. 754 */ 755 timeout(dasendorderedtag, NULL, 756 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL); 757 758 /* Register our shutdown event handler */ 759 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown, 760 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL) 761 printf("dainit: shutdown event registration failed!\n"); 762 } 763 } 764 765 static void 766 daoninvalidate(struct cam_periph *periph) 767 { 768 int s; 769 struct da_softc *softc; 770 struct ccb_setasync csa; 771 772 softc = (struct da_softc *)periph->softc; 773 774 /* 775 * De-register any async callbacks. 776 */ 777 xpt_setup_ccb(&csa.ccb_h, periph->path, 778 /* priority */ 5); 779 csa.ccb_h.func_code = XPT_SASYNC_CB; 780 csa.event_enable = 0; 781 csa.callback = daasync; 782 csa.callback_arg = periph; 783 xpt_action((union ccb *)&csa); 784 785 softc->flags |= DA_FLAG_PACK_INVALID; 786 787 /* 788 * Although the oninvalidate() routines are always called at 789 * splsoftcam, we need to be at splbio() here to keep the buffer 790 * queue from being modified while we traverse it. 791 */ 792 s = splbio(); 793 794 /* 795 * Return all queued I/O with ENXIO. 796 * XXX Handle any transactions queued to the card 797 * with XPT_ABORT_CCB. 798 */ 799 bioq_flush(&softc->bio_queue, NULL, ENXIO); 800 splx(s); 801 802 SLIST_REMOVE(&softc_list, softc, da_softc, links); 803 804 xpt_print_path(periph->path); 805 printf("lost device\n"); 806 } 807 808 static void 809 dacleanup(struct cam_periph *periph) 810 { 811 struct da_softc *softc; 812 813 softc = (struct da_softc *)periph->softc; 814 815 xpt_print_path(periph->path); 816 printf("removing device entry\n"); 817 /* 818 * If we can't free the sysctl tree, oh well... 819 */ 820 if ((softc->flags & DA_FLAG_SCTX_INIT) != 0 821 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) { 822 xpt_print_path(periph->path); 823 printf("can't remove sysctl context\n"); 824 } 825 disk_destroy(softc->disk); 826 free(softc, M_DEVBUF); 827 } 828 829 static void 830 daasync(void *callback_arg, u_int32_t code, 831 struct cam_path *path, void *arg) 832 { 833 struct cam_periph *periph; 834 835 periph = (struct cam_periph *)callback_arg; 836 switch (code) { 837 case AC_FOUND_DEVICE: 838 { 839 struct ccb_getdev *cgd; 840 cam_status status; 841 842 cgd = (struct ccb_getdev *)arg; 843 if (cgd == NULL) 844 break; 845 846 if (SID_TYPE(&cgd->inq_data) != T_DIRECT 847 && SID_TYPE(&cgd->inq_data) != T_RBC 848 && SID_TYPE(&cgd->inq_data) != T_OPTICAL) 849 break; 850 851 /* 852 * Allocate a peripheral instance for 853 * this device and start the probe 854 * process. 855 */ 856 status = cam_periph_alloc(daregister, daoninvalidate, 857 dacleanup, dastart, 858 "da", CAM_PERIPH_BIO, 859 cgd->ccb_h.path, daasync, 860 AC_FOUND_DEVICE, cgd); 861 862 if (status != CAM_REQ_CMP 863 && status != CAM_REQ_INPROG) 864 printf("daasync: Unable to attach to new device " 865 "due to status 0x%x\n", status); 866 break; 867 } 868 case AC_SENT_BDR: 869 case AC_BUS_RESET: 870 { 871 struct da_softc *softc; 872 struct ccb_hdr *ccbh; 873 int s; 874 875 softc = (struct da_softc *)periph->softc; 876 s = splsoftcam(); 877 /* 878 * Don't fail on the expected unit attention 879 * that will occur. 880 */ 881 softc->flags |= DA_FLAG_RETRY_UA; 882 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le) 883 ccbh->ccb_state |= DA_CCB_RETRY_UA; 884 splx(s); 885 /* FALLTHROUGH*/ 886 } 887 default: 888 cam_periph_async(periph, code, path, arg); 889 break; 890 } 891 } 892 893 static void 894 dasysctlinit(void *context, int pending) 895 { 896 struct cam_periph *periph; 897 struct da_softc *softc; 898 char tmpstr[80], tmpstr2[80]; 899 900 periph = (struct cam_periph *)context; 901 softc = (struct da_softc *)periph->softc; 902 903 snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number); 904 snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number); 905 906 mtx_lock(&Giant); 907 sysctl_ctx_init(&softc->sysctl_ctx); 908 softc->flags |= DA_FLAG_SCTX_INIT; 909 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 910 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2, 911 CTLFLAG_RD, 0, tmpstr); 912 if (softc->sysctl_tree == NULL) { 913 printf("dasysctlinit: unable to allocate sysctl tree\n"); 914 return; 915 } 916 917 /* 918 * Now register the sysctl handler, so the user can the value on 919 * the fly. 920 */ 921 SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree), 922 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW, 923 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I", 924 "Minimum CDB size"); 925 926 mtx_unlock(&Giant); 927 } 928 929 static int 930 dacmdsizesysctl(SYSCTL_HANDLER_ARGS) 931 { 932 int error, value; 933 934 value = *(int *)arg1; 935 936 error = sysctl_handle_int(oidp, &value, 0, req); 937 938 if ((error != 0) 939 || (req->newptr == NULL)) 940 return (error); 941 942 /* 943 * Acceptable values here are 6, 10, 12 or 16. 944 */ 945 if (value < 6) 946 value = 6; 947 else if ((value > 6) 948 && (value <= 10)) 949 value = 10; 950 else if ((value > 10) 951 && (value <= 12)) 952 value = 12; 953 else if (value > 12) 954 value = 16; 955 956 *(int *)arg1 = value; 957 958 return (0); 959 } 960 961 static cam_status 962 daregister(struct cam_periph *periph, void *arg) 963 { 964 int s; 965 struct da_softc *softc; 966 struct ccb_setasync csa; 967 struct ccb_pathinq cpi; 968 struct ccb_getdev *cgd; 969 char tmpstr[80]; 970 caddr_t match; 971 972 cgd = (struct ccb_getdev *)arg; 973 if (periph == NULL) { 974 printf("daregister: periph was NULL!!\n"); 975 return(CAM_REQ_CMP_ERR); 976 } 977 978 if (cgd == NULL) { 979 printf("daregister: no getdev CCB, can't register device\n"); 980 return(CAM_REQ_CMP_ERR); 981 } 982 983 softc = (struct da_softc *)malloc(sizeof(*softc), M_DEVBUF, 984 M_NOWAIT|M_ZERO); 985 986 if (softc == NULL) { 987 printf("daregister: Unable to probe new device. " 988 "Unable to allocate softc\n"); 989 return(CAM_REQ_CMP_ERR); 990 } 991 992 LIST_INIT(&softc->pending_ccbs); 993 softc->state = DA_STATE_PROBE; 994 bioq_init(&softc->bio_queue); 995 if (SID_IS_REMOVABLE(&cgd->inq_data)) 996 softc->flags |= DA_FLAG_PACK_REMOVABLE; 997 if ((cgd->inq_data.flags & SID_CmdQue) != 0) 998 softc->flags |= DA_FLAG_TAGGED_QUEUING; 999 1000 periph->softc = softc; 1001 1002 /* 1003 * See if this device has any quirks. 1004 */ 1005 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1006 (caddr_t)da_quirk_table, 1007 sizeof(da_quirk_table)/sizeof(*da_quirk_table), 1008 sizeof(*da_quirk_table), scsi_inquiry_match); 1009 1010 if (match != NULL) 1011 softc->quirks = ((struct da_quirk_entry *)match)->quirks; 1012 else 1013 softc->quirks = DA_Q_NONE; 1014 1015 /* Check if the SIM does not want 6 byte commands */ 1016 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1); 1017 cpi.ccb_h.func_code = XPT_PATH_INQ; 1018 xpt_action((union ccb *)&cpi); 1019 if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE)) 1020 softc->quirks |= DA_Q_NO_6_BYTE; 1021 1022 TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph); 1023 1024 /* 1025 * RBC devices don't have to support READ(6), only READ(10). 1026 */ 1027 if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC) 1028 softc->minimum_cmd_size = 10; 1029 else 1030 softc->minimum_cmd_size = 6; 1031 1032 /* 1033 * Load the user's default, if any. 1034 */ 1035 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size", 1036 periph->unit_number); 1037 TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size); 1038 1039 /* 1040 * 6, 10, 12 and 16 are the currently permissible values. 1041 */ 1042 if (softc->minimum_cmd_size < 6) 1043 softc->minimum_cmd_size = 6; 1044 else if ((softc->minimum_cmd_size > 6) 1045 && (softc->minimum_cmd_size <= 10)) 1046 softc->minimum_cmd_size = 10; 1047 else if ((softc->minimum_cmd_size > 10) 1048 && (softc->minimum_cmd_size <= 12)) 1049 softc->minimum_cmd_size = 12; 1050 else if (softc->minimum_cmd_size > 12) 1051 softc->minimum_cmd_size = 16; 1052 1053 /* 1054 * Block our timeout handler while we 1055 * add this softc to the dev list. 1056 */ 1057 s = splsoftclock(); 1058 SLIST_INSERT_HEAD(&softc_list, softc, links); 1059 splx(s); 1060 1061 /* 1062 * Register this media as a disk 1063 */ 1064 1065 softc->disk = disk_alloc(); 1066 softc->disk->d_open = daopen; 1067 softc->disk->d_close = daclose; 1068 softc->disk->d_strategy = dastrategy; 1069 softc->disk->d_dump = dadump; 1070 softc->disk->d_name = "da"; 1071 softc->disk->d_drv1 = periph; 1072 softc->disk->d_maxsize = DFLTPHYS; /* XXX: probably not arbitrary */ 1073 softc->disk->d_unit = periph->unit_number; 1074 softc->disk->d_flags = DISKFLAG_NEEDSGIANT; 1075 disk_create(softc->disk, DISK_VERSION); 1076 1077 /* 1078 * Add async callbacks for bus reset and 1079 * bus device reset calls. I don't bother 1080 * checking if this fails as, in most cases, 1081 * the system will function just fine without 1082 * them and the only alternative would be to 1083 * not attach the device on failure. 1084 */ 1085 xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5); 1086 csa.ccb_h.func_code = XPT_SASYNC_CB; 1087 csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE; 1088 csa.callback = daasync; 1089 csa.callback_arg = periph; 1090 xpt_action((union ccb *)&csa); 1091 /* 1092 * Lock this peripheral until we are setup. 1093 * This first call can't block 1094 */ 1095 (void)cam_periph_lock(periph, PRIBIO); 1096 xpt_schedule(periph, /*priority*/5); 1097 1098 return(CAM_REQ_CMP); 1099 } 1100 1101 static void 1102 dastart(struct cam_periph *periph, union ccb *start_ccb) 1103 { 1104 struct da_softc *softc; 1105 1106 softc = (struct da_softc *)periph->softc; 1107 1108 1109 switch (softc->state) { 1110 case DA_STATE_NORMAL: 1111 { 1112 /* Pull a buffer from the queue and get going on it */ 1113 struct bio *bp; 1114 int s; 1115 1116 /* 1117 * See if there is a buf with work for us to do.. 1118 */ 1119 s = splbio(); 1120 bp = bioq_first(&softc->bio_queue); 1121 if (periph->immediate_priority <= periph->pinfo.priority) { 1122 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1123 ("queuing for immediate ccb\n")); 1124 start_ccb->ccb_h.ccb_state = DA_CCB_WAITING; 1125 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1126 periph_links.sle); 1127 periph->immediate_priority = CAM_PRIORITY_NONE; 1128 splx(s); 1129 wakeup(&periph->ccb_list); 1130 } else if (bp == NULL) { 1131 splx(s); 1132 xpt_release_ccb(start_ccb); 1133 } else { 1134 int oldspl; 1135 u_int8_t tag_code; 1136 1137 bioq_remove(&softc->bio_queue, bp); 1138 1139 if ((softc->flags & DA_FLAG_NEED_OTAG) != 0) { 1140 softc->flags &= ~DA_FLAG_NEED_OTAG; 1141 softc->ordered_tag_count++; 1142 tag_code = MSG_ORDERED_Q_TAG; 1143 } else { 1144 tag_code = MSG_SIMPLE_Q_TAG; 1145 } 1146 scsi_read_write(&start_ccb->csio, 1147 /*retries*/da_retry_count, 1148 /*cbfcnp*/dadone, 1149 /*tag_action*/tag_code, 1150 /*read_op*/bp->bio_cmd == BIO_READ, 1151 /*byte2*/0, 1152 softc->minimum_cmd_size, 1153 /*lba*/bp->bio_pblkno, 1154 /*block_count*/bp->bio_bcount / 1155 softc->params.secsize, 1156 /*data_ptr*/ bp->bio_data, 1157 /*dxfer_len*/ bp->bio_bcount, 1158 /*sense_len*/SSD_FULL_SIZE, 1159 /*timeout*/da_default_timeout*1000); 1160 start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO; 1161 1162 /* 1163 * Block out any asyncronous callbacks 1164 * while we touch the pending ccb list. 1165 */ 1166 oldspl = splcam(); 1167 LIST_INSERT_HEAD(&softc->pending_ccbs, 1168 &start_ccb->ccb_h, periph_links.le); 1169 softc->outstanding_cmds++; 1170 splx(oldspl); 1171 1172 /* We expect a unit attention from this device */ 1173 if ((softc->flags & DA_FLAG_RETRY_UA) != 0) { 1174 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA; 1175 softc->flags &= ~DA_FLAG_RETRY_UA; 1176 } 1177 1178 start_ccb->ccb_h.ccb_bp = bp; 1179 bp = bioq_first(&softc->bio_queue); 1180 splx(s); 1181 1182 xpt_action(start_ccb); 1183 } 1184 1185 if (bp != NULL) { 1186 /* Have more work to do, so ensure we stay scheduled */ 1187 xpt_schedule(periph, /* XXX priority */1); 1188 } 1189 break; 1190 } 1191 case DA_STATE_PROBE: 1192 { 1193 struct ccb_scsiio *csio; 1194 struct scsi_read_capacity_data *rcap; 1195 1196 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap), 1197 M_TEMP, 1198 M_NOWAIT); 1199 if (rcap == NULL) { 1200 printf("dastart: Couldn't malloc read_capacity data\n"); 1201 /* da_free_periph??? */ 1202 break; 1203 } 1204 csio = &start_ccb->csio; 1205 scsi_read_capacity(csio, 1206 /*retries*/4, 1207 dadone, 1208 MSG_SIMPLE_Q_TAG, 1209 rcap, 1210 SSD_FULL_SIZE, 1211 /*timeout*/5000); 1212 start_ccb->ccb_h.ccb_bp = NULL; 1213 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE; 1214 xpt_action(start_ccb); 1215 break; 1216 } 1217 case DA_STATE_PROBE2: 1218 { 1219 struct ccb_scsiio *csio; 1220 struct scsi_read_capacity_data_long *rcaplong; 1221 1222 rcaplong = (struct scsi_read_capacity_data_long *) 1223 malloc(sizeof(*rcaplong), M_TEMP, M_NOWAIT); 1224 if (rcaplong == NULL) { 1225 printf("dastart: Couldn't malloc read_capacity data\n"); 1226 /* da_free_periph??? */ 1227 break; 1228 } 1229 csio = &start_ccb->csio; 1230 scsi_read_capacity_16(csio, 1231 /*retries*/ 4, 1232 /*cbfcnp*/ dadone, 1233 /*tag_action*/ MSG_SIMPLE_Q_TAG, 1234 /*lba*/ 0, 1235 /*reladr*/ 0, 1236 /*pmi*/ 0, 1237 rcaplong, 1238 /*sense_len*/ SSD_FULL_SIZE, 1239 /*timeout*/ 60000); 1240 start_ccb->ccb_h.ccb_bp = NULL; 1241 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2; 1242 xpt_action(start_ccb); 1243 break; 1244 } 1245 } 1246 } 1247 1248 static int 1249 cmd6workaround(union ccb *ccb) 1250 { 1251 struct scsi_rw_6 cmd6; 1252 struct scsi_rw_10 *cmd10; 1253 struct da_softc *softc; 1254 u_int8_t *cdb; 1255 int frozen; 1256 1257 cdb = ccb->csio.cdb_io.cdb_bytes; 1258 1259 /* Translation only possible if CDB is an array and cmd is R/W6 */ 1260 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 || 1261 (*cdb != READ_6 && *cdb != WRITE_6)) 1262 return 0; 1263 1264 xpt_print_path(ccb->ccb_h.path); 1265 printf("READ(6)/WRITE(6) not supported, " 1266 "increasing minimum_cmd_size to 10.\n"); 1267 softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc; 1268 softc->minimum_cmd_size = 10; 1269 1270 bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6)); 1271 cmd10 = (struct scsi_rw_10 *)cdb; 1272 cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10; 1273 cmd10->byte2 = 0; 1274 scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr); 1275 cmd10->reserved = 0; 1276 scsi_ulto2b(cmd6.length, cmd10->length); 1277 cmd10->control = cmd6.control; 1278 ccb->csio.cdb_len = sizeof(*cmd10); 1279 1280 /* Requeue request, unfreezing queue if necessary */ 1281 frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0; 1282 ccb->ccb_h.status = CAM_REQUEUE_REQ; 1283 xpt_action(ccb); 1284 if (frozen) { 1285 cam_release_devq(ccb->ccb_h.path, 1286 /*relsim_flags*/0, 1287 /*reduction*/0, 1288 /*timeout*/0, 1289 /*getcount_only*/0); 1290 } 1291 return (ERESTART); 1292 } 1293 1294 static void 1295 dadone(struct cam_periph *periph, union ccb *done_ccb) 1296 { 1297 struct da_softc *softc; 1298 struct ccb_scsiio *csio; 1299 1300 softc = (struct da_softc *)periph->softc; 1301 csio = &done_ccb->csio; 1302 switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) { 1303 case DA_CCB_BUFFER_IO: 1304 { 1305 struct bio *bp; 1306 int oldspl; 1307 1308 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1309 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1310 int error; 1311 int s; 1312 int sf; 1313 1314 if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0) 1315 sf = SF_RETRY_UA; 1316 else 1317 sf = 0; 1318 1319 error = daerror(done_ccb, CAM_RETRY_SELTO, sf); 1320 if (error == ERESTART) { 1321 /* 1322 * A retry was scheuled, so 1323 * just return. 1324 */ 1325 return; 1326 } 1327 if (error != 0) { 1328 1329 s = splbio(); 1330 1331 if (error == ENXIO) { 1332 /* 1333 * Catastrophic error. Mark our pack as 1334 * invalid. 1335 */ 1336 /* XXX See if this is really a media 1337 * change first. 1338 */ 1339 xpt_print_path(periph->path); 1340 printf("Invalidating pack\n"); 1341 softc->flags |= DA_FLAG_PACK_INVALID; 1342 } 1343 1344 /* 1345 * return all queued I/O with EIO, so that 1346 * the client can retry these I/Os in the 1347 * proper order should it attempt to recover. 1348 */ 1349 bioq_flush(&softc->bio_queue, NULL, EIO); 1350 splx(s); 1351 bp->bio_error = error; 1352 bp->bio_resid = bp->bio_bcount; 1353 bp->bio_flags |= BIO_ERROR; 1354 } else { 1355 bp->bio_resid = csio->resid; 1356 bp->bio_error = 0; 1357 if (bp->bio_resid != 0) 1358 bp->bio_flags |= BIO_ERROR; 1359 } 1360 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1361 cam_release_devq(done_ccb->ccb_h.path, 1362 /*relsim_flags*/0, 1363 /*reduction*/0, 1364 /*timeout*/0, 1365 /*getcount_only*/0); 1366 } else { 1367 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1368 panic("REQ_CMP with QFRZN"); 1369 bp->bio_resid = csio->resid; 1370 if (csio->resid > 0) 1371 bp->bio_flags |= BIO_ERROR; 1372 } 1373 1374 /* 1375 * Block out any asyncronous callbacks 1376 * while we touch the pending ccb list. 1377 */ 1378 oldspl = splcam(); 1379 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le); 1380 softc->outstanding_cmds--; 1381 if (softc->outstanding_cmds == 0) 1382 softc->flags |= DA_FLAG_WENT_IDLE; 1383 splx(oldspl); 1384 1385 biodone(bp); 1386 break; 1387 } 1388 case DA_CCB_PROBE: 1389 case DA_CCB_PROBE2: 1390 { 1391 struct scsi_read_capacity_data *rdcap; 1392 struct scsi_read_capacity_data_long *rcaplong; 1393 char announce_buf[80]; 1394 1395 rdcap = NULL; 1396 rcaplong = NULL; 1397 if (softc->state == DA_STATE_PROBE) 1398 rdcap =(struct scsi_read_capacity_data *)csio->data_ptr; 1399 else 1400 rcaplong = (struct scsi_read_capacity_data_long *) 1401 csio->data_ptr; 1402 1403 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 1404 struct disk_params *dp; 1405 uint32_t block_size; 1406 uint64_t maxsector; 1407 1408 if (softc->state == DA_STATE_PROBE) { 1409 block_size = scsi_4btoul(rdcap->length); 1410 maxsector = scsi_4btoul(rdcap->addr); 1411 1412 /* 1413 * According to SBC-2, if the standard 10 1414 * byte READ CAPACITY command returns 2^32, 1415 * we should issue the 16 byte version of 1416 * the command, since the device in question 1417 * has more sectors than can be represented 1418 * with the short version of the command. 1419 */ 1420 if (maxsector == 0xffffffff) { 1421 softc->state = DA_STATE_PROBE2; 1422 free(rdcap, M_TEMP); 1423 xpt_release_ccb(done_ccb); 1424 xpt_schedule(periph, /*priority*/5); 1425 return; 1426 } 1427 } else { 1428 block_size = scsi_4btoul(rcaplong->length); 1429 maxsector = scsi_8btou64(rcaplong->addr); 1430 } 1431 dasetgeom(periph, block_size, maxsector); 1432 dp = &softc->params; 1433 snprintf(announce_buf, sizeof(announce_buf), 1434 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)", 1435 (uintmax_t) (((uintmax_t)dp->secsize * 1436 dp->sectors) / (1024*1024)), 1437 (uintmax_t)dp->sectors, 1438 dp->secsize, dp->heads, dp->secs_per_track, 1439 dp->cylinders); 1440 } else { 1441 int error; 1442 1443 announce_buf[0] = '\0'; 1444 1445 /* 1446 * Retry any UNIT ATTENTION type errors. They 1447 * are expected at boot. 1448 */ 1449 error = daerror(done_ccb, CAM_RETRY_SELTO, 1450 SF_RETRY_UA|SF_NO_PRINT); 1451 if (error == ERESTART) { 1452 /* 1453 * A retry was scheuled, so 1454 * just return. 1455 */ 1456 return; 1457 } else if (error != 0) { 1458 struct scsi_sense_data *sense; 1459 int asc, ascq; 1460 int sense_key, error_code; 1461 int have_sense; 1462 cam_status status; 1463 struct ccb_getdev cgd; 1464 1465 /* Don't wedge this device's queue */ 1466 status = done_ccb->ccb_h.status; 1467 if ((status & CAM_DEV_QFRZN) != 0) 1468 cam_release_devq(done_ccb->ccb_h.path, 1469 /*relsim_flags*/0, 1470 /*reduction*/0, 1471 /*timeout*/0, 1472 /*getcount_only*/0); 1473 1474 1475 xpt_setup_ccb(&cgd.ccb_h, 1476 done_ccb->ccb_h.path, 1477 /* priority */ 1); 1478 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 1479 xpt_action((union ccb *)&cgd); 1480 1481 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0) 1482 || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0) 1483 || ((status & CAM_AUTOSNS_VALID) == 0)) 1484 have_sense = FALSE; 1485 else 1486 have_sense = TRUE; 1487 1488 if (have_sense) { 1489 sense = &csio->sense_data; 1490 scsi_extract_sense(sense, &error_code, 1491 &sense_key, 1492 &asc, &ascq); 1493 } 1494 /* 1495 * Attach to anything that claims to be a 1496 * direct access or optical disk device, 1497 * as long as it doesn't return a "Logical 1498 * unit not supported" (0x25) error. 1499 */ 1500 if ((have_sense) && (asc != 0x25) 1501 && (error_code == SSD_CURRENT_ERROR)) { 1502 const char *sense_key_desc; 1503 const char *asc_desc; 1504 1505 scsi_sense_desc(sense_key, asc, ascq, 1506 &cgd.inq_data, 1507 &sense_key_desc, 1508 &asc_desc); 1509 snprintf(announce_buf, 1510 sizeof(announce_buf), 1511 "Attempt to query device " 1512 "size failed: %s, %s", 1513 sense_key_desc, 1514 asc_desc); 1515 } else { 1516 if (have_sense) 1517 scsi_sense_print( 1518 &done_ccb->csio); 1519 else { 1520 xpt_print_path(periph->path); 1521 printf("got CAM status %#x\n", 1522 done_ccb->ccb_h.status); 1523 } 1524 1525 xpt_print_path(periph->path); 1526 printf("fatal error, failed" 1527 " to attach to device\n"); 1528 1529 /* 1530 * Free up resources. 1531 */ 1532 cam_periph_invalidate(periph); 1533 } 1534 } 1535 } 1536 free(csio->data_ptr, M_TEMP); 1537 if (announce_buf[0] != '\0') { 1538 xpt_announce_periph(periph, announce_buf); 1539 /* 1540 * Create our sysctl variables, now that we know 1541 * we have successfully attached. 1542 */ 1543 taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task); 1544 } 1545 softc->state = DA_STATE_NORMAL; 1546 /* 1547 * Since our peripheral may be invalidated by an error 1548 * above or an external event, we must release our CCB 1549 * before releasing the probe lock on the peripheral. 1550 * The peripheral will only go away once the last lock 1551 * is removed, and we need it around for the CCB release 1552 * operation. 1553 */ 1554 xpt_release_ccb(done_ccb); 1555 cam_periph_unlock(periph); 1556 return; 1557 } 1558 case DA_CCB_WAITING: 1559 { 1560 /* Caller will release the CCB */ 1561 wakeup(&done_ccb->ccb_h.cbfcnp); 1562 return; 1563 } 1564 case DA_CCB_DUMP: 1565 /* No-op. We're polling */ 1566 return; 1567 default: 1568 break; 1569 } 1570 xpt_release_ccb(done_ccb); 1571 } 1572 1573 static int 1574 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 1575 { 1576 struct da_softc *softc; 1577 struct cam_periph *periph; 1578 int error; 1579 1580 periph = xpt_path_periph(ccb->ccb_h.path); 1581 softc = (struct da_softc *)periph->softc; 1582 1583 /* 1584 * Automatically detect devices that do not support 1585 * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs. 1586 */ 1587 error = 0; 1588 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) { 1589 error = cmd6workaround(ccb); 1590 } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) == 1591 CAM_SCSI_STATUS_ERROR) 1592 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID) 1593 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) 1594 && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0) 1595 && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) { 1596 int sense_key, error_code, asc, ascq; 1597 1598 scsi_extract_sense(&ccb->csio.sense_data, 1599 &error_code, &sense_key, &asc, &ascq); 1600 if (sense_key == SSD_KEY_ILLEGAL_REQUEST) 1601 error = cmd6workaround(ccb); 1602 } 1603 if (error == ERESTART) 1604 return (ERESTART); 1605 1606 /* 1607 * XXX 1608 * Until we have a better way of doing pack validation, 1609 * don't treat UAs as errors. 1610 */ 1611 sense_flags |= SF_RETRY_UA; 1612 return(cam_periph_error(ccb, cam_flags, sense_flags, 1613 &softc->saved_ccb)); 1614 } 1615 1616 static void 1617 daprevent(struct cam_periph *periph, int action) 1618 { 1619 struct da_softc *softc; 1620 union ccb *ccb; 1621 int error; 1622 1623 softc = (struct da_softc *)periph->softc; 1624 1625 if (((action == PR_ALLOW) 1626 && (softc->flags & DA_FLAG_PACK_LOCKED) == 0) 1627 || ((action == PR_PREVENT) 1628 && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) { 1629 return; 1630 } 1631 1632 ccb = cam_periph_getccb(periph, /*priority*/1); 1633 1634 scsi_prevent(&ccb->csio, 1635 /*retries*/1, 1636 /*cbcfp*/dadone, 1637 MSG_SIMPLE_Q_TAG, 1638 action, 1639 SSD_FULL_SIZE, 1640 5000); 1641 1642 error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO, 1643 SF_RETRY_UA, softc->disk->d_devstat); 1644 1645 if (error == 0) { 1646 if (action == PR_ALLOW) 1647 softc->flags &= ~DA_FLAG_PACK_LOCKED; 1648 else 1649 softc->flags |= DA_FLAG_PACK_LOCKED; 1650 } 1651 1652 xpt_release_ccb(ccb); 1653 } 1654 1655 static int 1656 dagetcapacity(struct cam_periph *periph) 1657 { 1658 struct da_softc *softc; 1659 union ccb *ccb; 1660 struct scsi_read_capacity_data *rcap; 1661 struct scsi_read_capacity_data_long *rcaplong; 1662 uint32_t block_len; 1663 uint64_t maxsector; 1664 int error; 1665 1666 softc = (struct da_softc *)periph->softc; 1667 block_len = 0; 1668 maxsector = 0; 1669 error = 0; 1670 1671 /* Do a read capacity */ 1672 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcaplong), 1673 M_TEMP, 1674 M_WAITOK); 1675 1676 ccb = cam_periph_getccb(periph, /*priority*/1); 1677 scsi_read_capacity(&ccb->csio, 1678 /*retries*/4, 1679 /*cbfncp*/dadone, 1680 MSG_SIMPLE_Q_TAG, 1681 rcap, 1682 SSD_FULL_SIZE, 1683 /*timeout*/60000); 1684 ccb->ccb_h.ccb_bp = NULL; 1685 1686 error = cam_periph_runccb(ccb, daerror, 1687 /*cam_flags*/CAM_RETRY_SELTO, 1688 /*sense_flags*/SF_RETRY_UA, 1689 softc->disk->d_devstat); 1690 1691 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1692 cam_release_devq(ccb->ccb_h.path, 1693 /*relsim_flags*/0, 1694 /*reduction*/0, 1695 /*timeout*/0, 1696 /*getcount_only*/0); 1697 1698 if (error == 0) { 1699 block_len = scsi_4btoul(rcap->length); 1700 maxsector = scsi_4btoul(rcap->addr); 1701 1702 if (maxsector != 0xffffffff) 1703 goto done; 1704 } else 1705 goto done; 1706 1707 rcaplong = (struct scsi_read_capacity_data_long *)rcap; 1708 1709 scsi_read_capacity_16(&ccb->csio, 1710 /*retries*/ 4, 1711 /*cbfcnp*/ dadone, 1712 /*tag_action*/ MSG_SIMPLE_Q_TAG, 1713 /*lba*/ 0, 1714 /*reladr*/ 0, 1715 /*pmi*/ 0, 1716 rcaplong, 1717 /*sense_len*/ SSD_FULL_SIZE, 1718 /*timeout*/ 60000); 1719 ccb->ccb_h.ccb_bp = NULL; 1720 1721 error = cam_periph_runccb(ccb, daerror, 1722 /*cam_flags*/CAM_RETRY_SELTO, 1723 /*sense_flags*/SF_RETRY_UA, 1724 softc->disk->d_devstat); 1725 1726 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1727 cam_release_devq(ccb->ccb_h.path, 1728 /*relsim_flags*/0, 1729 /*reduction*/0, 1730 /*timeout*/0, 1731 /*getcount_only*/0); 1732 1733 if (error == 0) { 1734 block_len = scsi_4btoul(rcaplong->length); 1735 maxsector = scsi_8btou64(rcaplong->addr); 1736 } 1737 1738 done: 1739 1740 if (error == 0) 1741 dasetgeom(periph, block_len, maxsector); 1742 1743 xpt_release_ccb(ccb); 1744 1745 free(rcap, M_TEMP); 1746 1747 return (error); 1748 } 1749 1750 static void 1751 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector) 1752 { 1753 struct ccb_calc_geometry ccg; 1754 struct da_softc *softc; 1755 struct disk_params *dp; 1756 1757 softc = (struct da_softc *)periph->softc; 1758 1759 dp = &softc->params; 1760 dp->secsize = block_len; 1761 dp->sectors = maxsector + 1; 1762 /* 1763 * Have the controller provide us with a geometry 1764 * for this disk. The only time the geometry 1765 * matters is when we boot and the controller 1766 * is the only one knowledgeable enough to come 1767 * up with something that will make this a bootable 1768 * device. 1769 */ 1770 xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1); 1771 ccg.ccb_h.func_code = XPT_CALC_GEOMETRY; 1772 ccg.block_size = dp->secsize; 1773 ccg.volume_size = dp->sectors; 1774 ccg.heads = 0; 1775 ccg.secs_per_track = 0; 1776 ccg.cylinders = 0; 1777 xpt_action((union ccb*)&ccg); 1778 dp->heads = ccg.heads; 1779 dp->secs_per_track = ccg.secs_per_track; 1780 dp->cylinders = ccg.cylinders; 1781 } 1782 1783 static void 1784 dasendorderedtag(void *arg) 1785 { 1786 struct da_softc *softc; 1787 int s; 1788 1789 for (softc = SLIST_FIRST(&softc_list); 1790 softc != NULL; 1791 softc = SLIST_NEXT(softc, links)) { 1792 s = splsoftcam(); 1793 if ((softc->ordered_tag_count == 0) 1794 && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) { 1795 softc->flags |= DA_FLAG_NEED_OTAG; 1796 } 1797 if (softc->outstanding_cmds > 0) 1798 softc->flags &= ~DA_FLAG_WENT_IDLE; 1799 1800 softc->ordered_tag_count = 0; 1801 splx(s); 1802 } 1803 /* Queue us up again */ 1804 timeout(dasendorderedtag, NULL, 1805 (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL); 1806 } 1807 1808 /* 1809 * Step through all DA peripheral drivers, and if the device is still open, 1810 * sync the disk cache to physical media. 1811 */ 1812 static void 1813 dashutdown(void * arg, int howto) 1814 { 1815 struct cam_periph *periph; 1816 struct da_softc *softc; 1817 1818 TAILQ_FOREACH(periph, &dadriver.units, unit_links) { 1819 union ccb ccb; 1820 softc = (struct da_softc *)periph->softc; 1821 1822 /* 1823 * We only sync the cache if the drive is still open, and 1824 * if the drive is capable of it.. 1825 */ 1826 if (((softc->flags & DA_FLAG_OPEN) == 0) 1827 || (softc->quirks & DA_Q_NO_SYNC_CACHE)) 1828 continue; 1829 1830 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1); 1831 1832 ccb.ccb_h.ccb_state = DA_CCB_DUMP; 1833 scsi_synchronize_cache(&ccb.csio, 1834 /*retries*/1, 1835 /*cbfcnp*/dadone, 1836 MSG_SIMPLE_Q_TAG, 1837 /*begin_lba*/0, /* whole disk */ 1838 /*lb_count*/0, 1839 SSD_FULL_SIZE, 1840 60 * 60 * 1000); 1841 1842 xpt_polled_action(&ccb); 1843 1844 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1845 if (((ccb.ccb_h.status & CAM_STATUS_MASK) == 1846 CAM_SCSI_STATUS_ERROR) 1847 && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){ 1848 int error_code, sense_key, asc, ascq; 1849 1850 scsi_extract_sense(&ccb.csio.sense_data, 1851 &error_code, &sense_key, 1852 &asc, &ascq); 1853 1854 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 1855 scsi_sense_print(&ccb.csio); 1856 } else { 1857 xpt_print_path(periph->path); 1858 printf("Synchronize cache failed, status " 1859 "== 0x%x, scsi status == 0x%x\n", 1860 ccb.ccb_h.status, ccb.csio.scsi_status); 1861 } 1862 } 1863 1864 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0) 1865 cam_release_devq(ccb.ccb_h.path, 1866 /*relsim_flags*/0, 1867 /*reduction*/0, 1868 /*timeout*/0, 1869 /*getcount_only*/0); 1870 1871 } 1872 } 1873 1874 #else /* !_KERNEL */ 1875 1876 /* 1877 * XXX This is only left out of the kernel build to silence warnings. If, 1878 * for some reason this function is used in the kernel, the ifdefs should 1879 * be moved so it is included both in the kernel and userland. 1880 */ 1881 void 1882 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries, 1883 void (*cbfcnp)(struct cam_periph *, union ccb *), 1884 u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave, 1885 u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len, 1886 u_int32_t timeout) 1887 { 1888 struct scsi_format_unit *scsi_cmd; 1889 1890 scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes; 1891 scsi_cmd->opcode = FORMAT_UNIT; 1892 scsi_cmd->byte2 = byte2; 1893 scsi_ulto2b(ileave, scsi_cmd->interleave); 1894 1895 cam_fill_csio(csio, 1896 retries, 1897 cbfcnp, 1898 /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 1899 tag_action, 1900 data_ptr, 1901 dxfer_len, 1902 sense_len, 1903 sizeof(*scsi_cmd), 1904 timeout); 1905 } 1906 1907 #endif /* _KERNEL */
Cache object: a31dd394c0f549a9e676823fa345c6bc
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