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 * $FreeBSD: src/sys/cam/scsi/scsi_da.c,v 1.42.2.46 2003/10/21 22:18:19 thomas Exp $ 29 * $DragonFly: src/sys/bus/cam/scsi/scsi_da.c,v 1.17 2004/05/19 22:52:38 dillon Exp $ 30 */ 31 32 #ifdef _KERNEL 33 #include "opt_hw_wdog.h" 34 #endif /* _KERNEL */ 35 36 #include <sys/param.h> 37 #include <sys/bootmaj.h> 38 39 #ifdef _KERNEL 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/buf.h> 43 #include <sys/sysctl.h> 44 #include <sys/taskqueue.h> 45 #endif /* _KERNEL */ 46 47 #include <sys/devicestat.h> 48 #include <sys/conf.h> 49 #include <sys/disk.h> 50 #include <sys/eventhandler.h> 51 #ifdef _KERNEL 52 #include <sys/malloc.h> 53 #include <sys/cons.h> 54 #include <sys/proc.h> 55 #endif 56 #include <sys/buf2.h> 57 58 #include <machine/md_var.h> 59 60 #ifdef _KERNEL 61 #include <vm/vm.h> 62 #include <vm/pmap.h> 63 #endif 64 65 #ifndef _KERNEL 66 #include <stdio.h> 67 #include <string.h> 68 #endif /* _KERNEL */ 69 70 #include "../cam.h" 71 #include "../cam_ccb.h" 72 #include "../cam_extend.h" 73 #include "../cam_periph.h" 74 #include "../cam_xpt_periph.h" 75 76 #include "scsi_message.h" 77 78 #ifndef _KERNEL 79 #include "scsi_da.h" 80 #endif /* !_KERNEL */ 81 82 #ifdef _KERNEL 83 typedef enum { 84 DA_STATE_PROBE, 85 DA_STATE_NORMAL 86 } da_state; 87 88 typedef enum { 89 DA_FLAG_PACK_INVALID = 0x001, 90 DA_FLAG_NEW_PACK = 0x002, 91 DA_FLAG_PACK_LOCKED = 0x004, 92 DA_FLAG_PACK_REMOVABLE = 0x008, 93 DA_FLAG_TAGGED_QUEUING = 0x010, 94 DA_FLAG_NEED_OTAG = 0x020, 95 DA_FLAG_WENT_IDLE = 0x040, 96 DA_FLAG_RETRY_UA = 0x080, 97 DA_FLAG_OPEN = 0x100, 98 DA_FLAG_SCTX_INIT = 0x200 99 } da_flags; 100 101 typedef enum { 102 DA_Q_NONE = 0x00, 103 DA_Q_NO_SYNC_CACHE = 0x01, 104 DA_Q_NO_6_BYTE = 0x02, 105 DA_Q_NO_PREVENT = 0x04 106 } da_quirks; 107 108 typedef enum { 109 DA_CCB_PROBE = 0x01, 110 DA_CCB_BUFFER_IO = 0x02, 111 DA_CCB_WAITING = 0x03, 112 DA_CCB_DUMP = 0x04, 113 DA_CCB_TYPE_MASK = 0x0F, 114 DA_CCB_RETRY_UA = 0x10 115 } da_ccb_state; 116 117 /* Offsets into our private area for storing information */ 118 #define ccb_state ppriv_field0 119 #define ccb_bp ppriv_ptr1 120 121 struct disk_params { 122 u_int8_t heads; 123 u_int16_t cylinders; 124 u_int8_t secs_per_track; 125 u_int32_t secsize; /* Number of bytes/sector */ 126 u_int32_t sectors; /* total number sectors */ 127 }; 128 129 struct da_softc { 130 struct buf_queue_head buf_queue; 131 struct devstat device_stats; 132 SLIST_ENTRY(da_softc) links; 133 LIST_HEAD(, ccb_hdr) pending_ccbs; 134 da_state state; 135 da_flags flags; 136 da_quirks quirks; 137 int minimum_cmd_size; 138 int ordered_tag_count; 139 struct disk_params params; 140 struct disk disk; 141 union ccb saved_ccb; 142 struct task sysctl_task; 143 struct sysctl_ctx_list sysctl_ctx; 144 struct sysctl_oid *sysctl_tree; 145 }; 146 147 struct da_quirk_entry { 148 struct scsi_inquiry_pattern inq_pat; 149 da_quirks quirks; 150 }; 151 152 static const char quantum[] = "QUANTUM"; 153 static const char microp[] = "MICROP"; 154 155 static struct da_quirk_entry da_quirk_table[] = 156 { 157 /* SPI, FC devices */ 158 { 159 /* 160 * Fujitsu M2513A MO drives. 161 * Tested devices: M2513A2 firmware versions 1200 & 1300. 162 * (dip switch selects whether T_DIRECT or T_OPTICAL device) 163 * Reported by: W.Scholten <whs@xs4all.nl> 164 */ 165 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"}, 166 /*quirks*/ DA_Q_NO_SYNC_CACHE 167 }, 168 { 169 /* See above. */ 170 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"}, 171 /*quirks*/ DA_Q_NO_SYNC_CACHE 172 }, 173 { 174 /* 175 * This particular Fujitsu drive doesn't like the 176 * synchronize cache command. 177 * Reported by: Tom Jackson <toj@gorilla.net> 178 */ 179 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"}, 180 /*quirks*/ DA_Q_NO_SYNC_CACHE 181 182 }, 183 { 184 /* 185 * This drive doesn't like the synchronize cache command 186 * either. Reported by: Matthew Jacob <mjacob@feral.com> 187 * in NetBSD PR kern/6027, August 24, 1998. 188 */ 189 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"}, 190 /*quirks*/ DA_Q_NO_SYNC_CACHE 191 }, 192 { 193 /* 194 * This drive doesn't like the synchronize cache command 195 * either. Reported by: Hellmuth Michaelis (hm@kts.org) 196 * (PR 8882). 197 */ 198 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"}, 199 /*quirks*/ DA_Q_NO_SYNC_CACHE 200 }, 201 { 202 /* 203 * Doesn't like the synchronize cache command. 204 * Reported by: Blaz Zupan <blaz@gold.amis.net> 205 */ 206 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"}, 207 /*quirks*/ DA_Q_NO_SYNC_CACHE 208 }, 209 { 210 /* 211 * Doesn't like the synchronize cache command. 212 */ 213 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"}, 214 /*quirks*/ DA_Q_NO_SYNC_CACHE 215 }, 216 { 217 /* 218 * Doesn't like the synchronize cache command. 219 */ 220 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"}, 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 /* XXX USB floppy quirks temporarily enabled for 4.9R */ 239 /* USB floppy devices supported by umass(4) */ 240 { 241 /* 242 * This USB floppy drive uses the UFI command set. This 243 * command set is a derivative of the ATAPI command set and 244 * does not support READ_6 commands only READ_10. It also does 245 * not support sync cache (0x35). 246 */ 247 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"}, 248 /*quirks*/ DA_Q_NO_SYNC_CACHE 249 }, 250 { 251 /* Another USB floppy */ 252 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MATSHITA", "FDD CF-VFDU*","*"}, 253 /*quirks*/ DA_Q_NO_SYNC_CACHE 254 }, 255 { 256 /* 257 * The vendor, product and version strings coming from the 258 * controller are null terminated instead of being padded with 259 * spaces. The trailing wildcard character '*' is required. 260 */ 261 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SMSC*", "USB FDC*","*"}, 262 /*quirks*/ DA_Q_NO_SYNC_CACHE 263 }, 264 { 265 /* 266 * SmartDisk (Mitsumi) USB floppy drive 267 * PR: kern/50226 268 */ 269 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MITSUMI", "USB FDD", "*"}, 270 /*quirks*/ DA_Q_NO_SYNC_CACHE 271 }, 272 #ifdef DA_OLD_QUIRKS 273 /* USB mass storage devices supported by umass(4) */ 274 { 275 /* 276 * Sony Memory Stick adapter MSAC-US1 and 277 * Sony PCG-C1VJ Internal Memory Stick Slot (MSC-U01). 278 * Make all sony MS* products use this quirk. 279 */ 280 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "MS*", "*"}, 281 /*quirks*/ DA_Q_NO_SYNC_CACHE 282 }, 283 { 284 /* 285 * Sony Memory Stick adapter for the CLIE series 286 * of PalmOS PDA's 287 */ 288 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "CLIE*", "*"}, 289 /*quirks*/ DA_Q_NO_SYNC_CACHE 290 }, 291 { 292 /* 293 * Intelligent Stick USB disk-on-key 294 * PR: kern/53005 295 */ 296 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB Card", 297 "IntelligentStick*", "*"}, 298 /*quirks*/ DA_Q_NO_SYNC_CACHE 299 }, 300 { 301 /* 302 * Sony DSC cameras (DSC-S30, DSC-S50, DSC-S70) 303 */ 304 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"}, 305 /*quirks*/ DA_Q_NO_SYNC_CACHE 306 }, 307 { 308 /* 309 * Microtech USB CameraMate 310 */ 311 {T_DIRECT, SIP_MEDIA_REMOVABLE, "eUSB Compact*", 312 "Compact Flash*", "*"}, 313 /*quirks*/ DA_Q_NO_SYNC_CACHE 314 }, 315 { 316 /* 317 * Olympus digital cameras (C-3040ZOOM, C-2040ZOOM, C-1) 318 */ 319 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "C-*", "*"}, 320 /*quirks*/ DA_Q_NO_SYNC_CACHE 321 }, 322 { 323 /* 324 * Olympus digital cameras (E-100RS, E-10). 325 */ 326 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "E-*", "*"}, 327 /*quirks*/ DA_Q_NO_SYNC_CACHE 328 }, 329 { 330 /* 331 * KingByte Pen Drives 332 */ 333 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NO BRAND", "PEN DRIVE", "*"}, 334 /*quirks*/ DA_Q_NO_SYNC_CACHE 335 }, 336 { 337 /* 338 * FujiFilm Camera 339 */ 340 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJIFILMUSB-DRIVEUNIT", 341 "USB-DRIVEUNIT", "*"}, 342 /*quirks*/ DA_Q_NO_SYNC_CACHE 343 }, 344 { 345 /* 346 * Minolta Dimage E203 347 */ 348 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DiMAGE E203", "*"}, 349 /*quirks*/ DA_Q_NO_SYNC_CACHE 350 }, 351 { 352 /* 353 * Apacer HandyDrive 354 * PR: kern/43627 355 */ 356 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Apacer", "HandyDrive", "*"}, 357 /*quirks*/ DA_Q_NO_SYNC_CACHE 358 }, 359 { 360 /* 361 * Daisy Technology PhotoClip on Zoran chip 362 * PR: kern/43580 363 */ 364 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ZORAN", "COACH", "*"}, 365 /*quirks*/ DA_Q_NO_SYNC_CACHE 366 }, 367 { 368 /* 369 * Sony USB Key-Storage 370 * PR: kern/46386 371 */ 372 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Storage Media", "*"}, 373 /*quirks*/ DA_Q_NO_SYNC_CACHE 374 }, 375 #endif /* DA_OLD_QUIRKS */ 376 { 377 /* 378 * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player 379 * PR: kern/51675 380 */ 381 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"}, 382 /*quirks*/ DA_Q_NO_SYNC_CACHE 383 }, 384 { 385 /* 386 * Jungsoft NEXDISK USB flash key 387 * PR: kern/54737 388 */ 389 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"}, 390 /*quirks*/ DA_Q_NO_SYNC_CACHE 391 }, 392 { 393 /* 394 * Creative Nomad MUVO mp3 player (USB) 395 * PR: kern/53094 396 */ 397 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"}, 398 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT 399 }, 400 }; 401 402 static d_open_t daopen; 403 static d_close_t daclose; 404 static d_strategy_t dastrategy; 405 static d_ioctl_t daioctl; 406 static d_dump_t dadump; 407 static periph_init_t dainit; 408 static void daasync(void *callback_arg, u_int32_t code, 409 struct cam_path *path, void *arg); 410 static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS); 411 static periph_ctor_t daregister; 412 static periph_dtor_t dacleanup; 413 static periph_start_t dastart; 414 static periph_oninv_t daoninvalidate; 415 static void dadone(struct cam_periph *periph, 416 union ccb *done_ccb); 417 static int daerror(union ccb *ccb, u_int32_t cam_flags, 418 u_int32_t sense_flags); 419 static void daprevent(struct cam_periph *periph, int action); 420 static void dasetgeom(struct cam_periph *periph, 421 struct scsi_read_capacity_data * rdcap); 422 static timeout_t dasendorderedtag; 423 static void dashutdown(void *arg, int howto); 424 425 #ifndef DA_DEFAULT_TIMEOUT 426 #define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */ 427 #endif 428 429 #ifndef DA_DEFAULT_RETRY 430 #define DA_DEFAULT_RETRY 4 431 #endif 432 433 static int da_retry_count = DA_DEFAULT_RETRY; 434 static int da_default_timeout = DA_DEFAULT_TIMEOUT; 435 436 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0, 437 "CAM Direct Access Disk driver"); 438 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW, 439 &da_retry_count, 0, "Normal I/O retry count"); 440 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count); 441 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW, 442 &da_default_timeout, 0, "Normal I/O timeout (in seconds)"); 443 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout); 444 445 /* 446 * DA_ORDEREDTAG_INTERVAL determines how often, relative 447 * to the default timeout, we check to see whether an ordered 448 * tagged transaction is appropriate to prevent simple tag 449 * starvation. Since we'd like to ensure that there is at least 450 * 1/2 of the timeout length left for a starved transaction to 451 * complete after we've sent an ordered tag, we must poll at least 452 * four times in every timeout period. This takes care of the worst 453 * case where a starved transaction starts during an interval that 454 * meets the requirement "don't send an ordered tag" test so it takes 455 * us two intervals to determine that a tag must be sent. 456 */ 457 #ifndef DA_ORDEREDTAG_INTERVAL 458 #define DA_ORDEREDTAG_INTERVAL 4 459 #endif 460 461 static struct periph_driver dadriver = 462 { 463 dainit, "da", 464 TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0 465 }; 466 467 DATA_SET(periphdriver_set, dadriver); 468 469 /* For 2.2-stable support */ 470 #ifndef D_DISK 471 #define D_DISK 0 472 #endif 473 474 static struct cdevsw da_cdevsw = { 475 /* name */ "da", 476 /* maj */ DA_CDEV_MAJOR, 477 /* flags */ D_DISK, 478 /* port */ NULL, 479 /* clone */ NULL, 480 481 /* open */ daopen, 482 /* close */ daclose, 483 /* read */ physread, 484 /* write */ physwrite, 485 /* ioctl */ daioctl, 486 /* poll */ nopoll, 487 /* mmap */ nommap, 488 /* strategy */ dastrategy, 489 /* dump */ dadump, 490 /* psize */ nopsize 491 }; 492 493 static SLIST_HEAD(,da_softc) softc_list; 494 static struct extend_array *daperiphs; 495 496 static int 497 daopen(dev_t dev, int flags, int fmt, struct thread *td) 498 { 499 struct cam_periph *periph; 500 struct da_softc *softc; 501 struct disklabel *label; 502 int unit; 503 int part; 504 int error; 505 int s; 506 507 unit = dkunit(dev); 508 part = dkpart(dev); 509 periph = cam_extend_get(daperiphs, unit); 510 if (periph == NULL) 511 return (ENXIO); 512 513 softc = (struct da_softc *)periph->softc; 514 515 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 516 ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev), 517 unit, part)); 518 519 if ((error = cam_periph_lock(periph, PCATCH)) != 0) { 520 return (error); /* error code from tsleep */ 521 } 522 523 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 524 return(ENXIO); 525 softc->flags |= DA_FLAG_OPEN; 526 527 s = splsoftcam(); 528 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) { 529 /* Invalidate our pack information. */ 530 disk_invalidate(&softc->disk); 531 softc->flags &= ~DA_FLAG_PACK_INVALID; 532 } 533 splx(s); 534 535 /* Do a read capacity */ 536 { 537 struct scsi_read_capacity_data *rcap; 538 union ccb *ccb; 539 540 rcap = malloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO); 541 542 ccb = cam_periph_getccb(periph, /*priority*/1); 543 scsi_read_capacity(&ccb->csio, 544 /*retries*/1, 545 /*cbfncp*/dadone, 546 MSG_SIMPLE_Q_TAG, 547 rcap, 548 SSD_FULL_SIZE, 549 /*timeout*/60000); 550 ccb->ccb_h.ccb_bp = NULL; 551 552 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0, 553 /*sense_flags*/SF_RETRY_UA | 554 SF_RETRY_SELTO, 555 &softc->device_stats); 556 557 xpt_release_ccb(ccb); 558 559 if (error == 0) { 560 dasetgeom(periph, rcap); 561 } 562 563 free(rcap, M_TEMP); 564 } 565 566 if (error == 0) { 567 struct ccb_getdev cgd; 568 569 /* Build label for whole disk. */ 570 label = &softc->disk.d_label; 571 bzero(label, sizeof(*label)); 572 label->d_type = DTYPE_SCSI; 573 574 /* 575 * Grab the inquiry data to get the vendor and product names. 576 * Put them in the typename and packname for the label. 577 */ 578 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1); 579 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 580 xpt_action((union ccb *)&cgd); 581 582 strncpy(label->d_typename, cgd.inq_data.vendor, 583 min(SID_VENDOR_SIZE, sizeof(label->d_typename))); 584 strncpy(label->d_packname, cgd.inq_data.product, 585 min(SID_PRODUCT_SIZE, sizeof(label->d_packname))); 586 587 label->d_secsize = softc->params.secsize; 588 label->d_nsectors = softc->params.secs_per_track; 589 label->d_ntracks = softc->params.heads; 590 label->d_ncylinders = softc->params.cylinders; 591 label->d_secpercyl = softc->params.heads 592 * softc->params.secs_per_track; 593 label->d_secperunit = softc->params.sectors; 594 595 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 && 596 (softc->quirks & DA_Q_NO_PREVENT) == 0) 597 daprevent(periph, PR_PREVENT); 598 599 /* 600 * Check to see whether or not the blocksize is set yet. 601 * If it isn't, set it and then clear the blocksize 602 * unavailable flag for the device statistics. 603 */ 604 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){ 605 softc->device_stats.block_size = softc->params.secsize; 606 softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE; 607 } 608 } 609 610 if (error != 0) { 611 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 && 612 (softc->quirks & DA_Q_NO_PREVENT) == 0) 613 daprevent(periph, PR_ALLOW); 614 softc->flags &= ~DA_FLAG_OPEN; 615 cam_periph_release(periph); 616 } 617 cam_periph_unlock(periph); 618 return (error); 619 } 620 621 static int 622 daclose(dev_t dev, int flag, int fmt, struct thread *td) 623 { 624 struct cam_periph *periph; 625 struct da_softc *softc; 626 int unit; 627 int error; 628 629 unit = dkunit(dev); 630 periph = cam_extend_get(daperiphs, unit); 631 if (periph == NULL) 632 return (ENXIO); 633 634 softc = (struct da_softc *)periph->softc; 635 636 if ((error = cam_periph_lock(periph, 0)) != 0) { 637 return (error); /* error code from tsleep */ 638 } 639 640 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) { 641 union ccb *ccb; 642 643 ccb = cam_periph_getccb(periph, /*priority*/1); 644 645 scsi_synchronize_cache(&ccb->csio, 646 /*retries*/1, 647 /*cbfcnp*/dadone, 648 MSG_SIMPLE_Q_TAG, 649 /*begin_lba*/0,/* Cover the whole disk */ 650 /*lb_count*/0, 651 SSD_FULL_SIZE, 652 5 * 60 * 1000); 653 654 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0, 655 /*sense_flags*/SF_RETRY_UA, 656 &softc->device_stats); 657 658 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 659 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == 660 CAM_SCSI_STATUS_ERROR) { 661 int asc, ascq; 662 int sense_key, error_code; 663 664 scsi_extract_sense(&ccb->csio.sense_data, 665 &error_code, 666 &sense_key, 667 &asc, &ascq); 668 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 669 scsi_sense_print(&ccb->csio); 670 } else { 671 xpt_print_path(periph->path); 672 printf("Synchronize cache failed, status " 673 "== 0x%x, scsi status == 0x%x\n", 674 ccb->csio.ccb_h.status, 675 ccb->csio.scsi_status); 676 } 677 } 678 679 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 680 cam_release_devq(ccb->ccb_h.path, 681 /*relsim_flags*/0, 682 /*reduction*/0, 683 /*timeout*/0, 684 /*getcount_only*/0); 685 686 xpt_release_ccb(ccb); 687 688 } 689 690 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) { 691 if ((softc->quirks & DA_Q_NO_PREVENT) == 0) 692 daprevent(periph, PR_ALLOW); 693 /* 694 * If we've got removeable media, mark the blocksize as 695 * unavailable, since it could change when new media is 696 * inserted. 697 */ 698 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE; 699 } 700 701 softc->flags &= ~DA_FLAG_OPEN; 702 cam_periph_unlock(periph); 703 cam_periph_release(periph); 704 return (0); 705 } 706 707 /* 708 * Actually translate the requested transfer into one the physical driver 709 * can understand. The transfer is described by a buf and will include 710 * only one physical transfer. 711 */ 712 static void 713 dastrategy(struct buf *bp) 714 { 715 struct cam_periph *periph; 716 struct da_softc *softc; 717 u_int unit; 718 u_int part; 719 int s; 720 721 unit = dkunit(bp->b_dev); 722 part = dkpart(bp->b_dev); 723 periph = cam_extend_get(daperiphs, unit); 724 if (periph == NULL) { 725 bp->b_error = ENXIO; 726 goto bad; 727 } 728 softc = (struct da_softc *)periph->softc; 729 #if 0 730 /* 731 * check it's not too big a transfer for our adapter 732 */ 733 scsi_minphys(bp,&sd_switch); 734 #endif 735 736 /* 737 * Mask interrupts so that the pack cannot be invalidated until 738 * after we are in the queue. Otherwise, we might not properly 739 * clean up one of the buffers. 740 */ 741 s = splbio(); 742 743 /* 744 * If the device has been made invalid, error out 745 */ 746 if ((softc->flags & DA_FLAG_PACK_INVALID)) { 747 splx(s); 748 bp->b_error = ENXIO; 749 goto bad; 750 } 751 752 /* 753 * Place it in the queue of disk activities for this disk 754 */ 755 bufqdisksort(&softc->buf_queue, bp); 756 757 splx(s); 758 759 /* 760 * Schedule ourselves for performing the work. 761 */ 762 xpt_schedule(periph, /* XXX priority */1); 763 764 return; 765 bad: 766 bp->b_flags |= B_ERROR; 767 768 /* 769 * Correctly set the buf to indicate a completed xfer 770 */ 771 bp->b_resid = bp->b_bcount; 772 biodone(bp); 773 return; 774 } 775 776 /* For 2.2-stable support */ 777 #ifndef ENOIOCTL 778 #define ENOIOCTL -1 779 #endif 780 781 static int 782 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 783 { 784 struct cam_periph *periph; 785 struct da_softc *softc; 786 int unit; 787 int error; 788 789 unit = dkunit(dev); 790 periph = cam_extend_get(daperiphs, unit); 791 if (periph == NULL) 792 return (ENXIO); 793 794 softc = (struct da_softc *)periph->softc; 795 796 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n")); 797 798 if ((error = cam_periph_lock(periph, PCATCH)) != 0) { 799 return (error); /* error code from tsleep */ 800 } 801 802 error = cam_periph_ioctl(periph, cmd, addr, daerror); 803 804 cam_periph_unlock(periph); 805 806 return (error); 807 } 808 809 static int 810 dadump(dev_t dev, u_int num, u_int blknum, u_int secsize) 811 { 812 struct cam_periph *periph; 813 struct da_softc *softc; 814 u_int unit; 815 long blkcnt; 816 vm_paddr_t addr; 817 struct ccb_scsiio csio; 818 int dumppages = MAXDUMPPGS; 819 int i; 820 821 /* toss any characters present prior to dump */ 822 while (cncheckc() != -1) 823 ; 824 825 unit = dkunit(dev); 826 periph = cam_extend_get(daperiphs, unit); 827 if (periph == NULL) { 828 return (ENXIO); 829 } 830 softc = (struct da_softc *)periph->softc; 831 832 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) 833 return (ENXIO); 834 835 addr = 0; /* starting address */ 836 blkcnt = howmany(PAGE_SIZE, secsize); 837 838 while (num > 0) { 839 caddr_t va = NULL; 840 841 if ((num / blkcnt) < dumppages) 842 dumppages = num / blkcnt; 843 844 for (i = 0; i < dumppages; ++i) { 845 vm_paddr_t a = addr + (i * PAGE_SIZE); 846 if (is_physical_memory(a)) 847 va = pmap_kenter_temporary(trunc_page(a), i); 848 else 849 va = pmap_kenter_temporary(trunc_page(0), i); 850 } 851 852 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1); 853 csio.ccb_h.ccb_state = DA_CCB_DUMP; 854 scsi_read_write(&csio, 855 /*retries*/1, 856 dadone, 857 MSG_ORDERED_Q_TAG, 858 /*read*/FALSE, 859 /*byte2*/0, 860 /*minimum_cmd_size*/ softc->minimum_cmd_size, 861 blknum, 862 blkcnt * dumppages, 863 /*data_ptr*/(u_int8_t *) va, 864 /*dxfer_len*/blkcnt * secsize * dumppages, 865 /*sense_len*/SSD_FULL_SIZE, 866 DA_DEFAULT_TIMEOUT * 1000); 867 xpt_polled_action((union ccb *)&csio); 868 869 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 870 printf("Aborting dump due to I/O error.\n"); 871 if ((csio.ccb_h.status & CAM_STATUS_MASK) == 872 CAM_SCSI_STATUS_ERROR) 873 scsi_sense_print(&csio); 874 else 875 printf("status == 0x%x, scsi status == 0x%x\n", 876 csio.ccb_h.status, csio.scsi_status); 877 return(EIO); 878 } 879 880 if (dumpstatus(addr, (off_t)num * softc->params.secsize) < 0) 881 return (EINTR); 882 883 /* update block count */ 884 num -= blkcnt * dumppages; 885 blknum += blkcnt * dumppages; 886 addr += PAGE_SIZE * dumppages; 887 } 888 889 /* 890 * Sync the disk cache contents to the physical media. 891 */ 892 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) { 893 894 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1); 895 csio.ccb_h.ccb_state = DA_CCB_DUMP; 896 scsi_synchronize_cache(&csio, 897 /*retries*/1, 898 /*cbfcnp*/dadone, 899 MSG_SIMPLE_Q_TAG, 900 /*begin_lba*/0,/* Cover the whole disk */ 901 /*lb_count*/0, 902 SSD_FULL_SIZE, 903 5 * 60 * 1000); 904 xpt_polled_action((union ccb *)&csio); 905 906 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 907 if ((csio.ccb_h.status & CAM_STATUS_MASK) == 908 CAM_SCSI_STATUS_ERROR) { 909 int asc, ascq; 910 int sense_key, error_code; 911 912 scsi_extract_sense(&csio.sense_data, 913 &error_code, 914 &sense_key, 915 &asc, &ascq); 916 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 917 scsi_sense_print(&csio); 918 } else { 919 xpt_print_path(periph->path); 920 printf("Synchronize cache failed, status " 921 "== 0x%x, scsi status == 0x%x\n", 922 csio.ccb_h.status, csio.scsi_status); 923 } 924 } 925 } 926 return (0); 927 } 928 929 static void 930 dainit(void) 931 { 932 cam_status status; 933 struct cam_path *path; 934 935 /* 936 * Create our extend array for storing the devices we attach to. 937 */ 938 daperiphs = cam_extend_new(); 939 SLIST_INIT(&softc_list); 940 if (daperiphs == NULL) { 941 printf("da: Failed to alloc extend array!\n"); 942 return; 943 } 944 945 /* 946 * Install a global async callback. This callback will 947 * receive async callbacks like "new device found". 948 */ 949 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID, 950 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 951 952 if (status == CAM_REQ_CMP) { 953 struct ccb_setasync csa; 954 955 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5); 956 csa.ccb_h.func_code = XPT_SASYNC_CB; 957 csa.event_enable = AC_FOUND_DEVICE; 958 csa.callback = daasync; 959 csa.callback_arg = NULL; 960 xpt_action((union ccb *)&csa); 961 status = csa.ccb_h.status; 962 xpt_free_path(path); 963 } 964 965 if (status != CAM_REQ_CMP) { 966 printf("da: Failed to attach master async callback " 967 "due to status 0x%x!\n", status); 968 } else { 969 970 /* 971 * Schedule a periodic event to occasionally send an 972 * ordered tag to a device. 973 */ 974 timeout(dasendorderedtag, NULL, 975 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL); 976 977 /* Register our shutdown event handler */ 978 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown, 979 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL) 980 printf("dainit: shutdown event registration failed!\n"); 981 } 982 } 983 984 static void 985 daoninvalidate(struct cam_periph *periph) 986 { 987 int s; 988 struct da_softc *softc; 989 struct buf *q_bp; 990 struct ccb_setasync csa; 991 992 softc = (struct da_softc *)periph->softc; 993 994 /* 995 * De-register any async callbacks. 996 */ 997 xpt_setup_ccb(&csa.ccb_h, periph->path, 998 /* priority */ 5); 999 csa.ccb_h.func_code = XPT_SASYNC_CB; 1000 csa.event_enable = 0; 1001 csa.callback = daasync; 1002 csa.callback_arg = periph; 1003 xpt_action((union ccb *)&csa); 1004 1005 softc->flags |= DA_FLAG_PACK_INVALID; 1006 1007 /* 1008 * Although the oninvalidate() routines are always called at 1009 * splsoftcam, we need to be at splbio() here to keep the buffer 1010 * queue from being modified while we traverse it. 1011 */ 1012 s = splbio(); 1013 1014 /* 1015 * Return all queued I/O with ENXIO. 1016 * XXX Handle any transactions queued to the card 1017 * with XPT_ABORT_CCB. 1018 */ 1019 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){ 1020 bufq_remove(&softc->buf_queue, q_bp); 1021 q_bp->b_resid = q_bp->b_bcount; 1022 q_bp->b_error = ENXIO; 1023 q_bp->b_flags |= B_ERROR; 1024 biodone(q_bp); 1025 } 1026 splx(s); 1027 1028 SLIST_REMOVE(&softc_list, softc, da_softc, links); 1029 1030 xpt_print_path(periph->path); 1031 printf("lost device\n"); 1032 } 1033 1034 static void 1035 dacleanup(struct cam_periph *periph) 1036 { 1037 struct da_softc *softc; 1038 1039 softc = (struct da_softc *)periph->softc; 1040 1041 devstat_remove_entry(&softc->device_stats); 1042 cam_extend_release(daperiphs, periph->unit_number); 1043 xpt_print_path(periph->path); 1044 printf("removing device entry\n"); 1045 /* 1046 * If we can't free the sysctl tree, oh well... 1047 */ 1048 if ((softc->flags & DA_FLAG_SCTX_INIT) != 0 1049 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) { 1050 xpt_print_path(periph->path); 1051 printf("can't remove sysctl context\n"); 1052 } 1053 if (softc->disk.d_rawdev) { 1054 disk_destroy(&softc->disk); 1055 } 1056 free(softc, M_DEVBUF); 1057 } 1058 1059 static void 1060 daasync(void *callback_arg, u_int32_t code, 1061 struct cam_path *path, void *arg) 1062 { 1063 struct cam_periph *periph; 1064 1065 periph = (struct cam_periph *)callback_arg; 1066 switch (code) { 1067 case AC_FOUND_DEVICE: 1068 { 1069 struct ccb_getdev *cgd; 1070 cam_status status; 1071 1072 cgd = (struct ccb_getdev *)arg; 1073 1074 if (SID_TYPE(&cgd->inq_data) != T_DIRECT 1075 && SID_TYPE(&cgd->inq_data) != T_RBC 1076 && SID_TYPE(&cgd->inq_data) != T_OPTICAL) 1077 break; 1078 1079 /* 1080 * Allocate a peripheral instance for 1081 * this device and start the probe 1082 * process. 1083 */ 1084 status = cam_periph_alloc(daregister, daoninvalidate, 1085 dacleanup, dastart, 1086 "da", CAM_PERIPH_BIO, 1087 cgd->ccb_h.path, daasync, 1088 AC_FOUND_DEVICE, cgd); 1089 1090 if (status != CAM_REQ_CMP 1091 && status != CAM_REQ_INPROG) 1092 printf("daasync: Unable to attach to new device " 1093 "due to status 0x%x\n", status); 1094 break; 1095 } 1096 case AC_SENT_BDR: 1097 case AC_BUS_RESET: 1098 { 1099 struct da_softc *softc; 1100 struct ccb_hdr *ccbh; 1101 int s; 1102 1103 softc = (struct da_softc *)periph->softc; 1104 s = splsoftcam(); 1105 /* 1106 * Don't fail on the expected unit attention 1107 * that will occur. 1108 */ 1109 softc->flags |= DA_FLAG_RETRY_UA; 1110 for (ccbh = LIST_FIRST(&softc->pending_ccbs); 1111 ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le)) 1112 ccbh->ccb_state |= DA_CCB_RETRY_UA; 1113 splx(s); 1114 /* FALLTHROUGH*/ 1115 } 1116 default: 1117 cam_periph_async(periph, code, path, arg); 1118 break; 1119 } 1120 } 1121 1122 static void 1123 dasysctlinit(void *context, int pending) 1124 { 1125 struct cam_periph *periph; 1126 struct da_softc *softc; 1127 char tmpstr[80], tmpstr2[80]; 1128 1129 periph = (struct cam_periph *)context; 1130 softc = (struct da_softc *)periph->softc; 1131 1132 snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number); 1133 snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number); 1134 1135 sysctl_ctx_init(&softc->sysctl_ctx); 1136 softc->flags |= DA_FLAG_SCTX_INIT; 1137 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 1138 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2, 1139 CTLFLAG_RD, 0, tmpstr); 1140 if (softc->sysctl_tree == NULL) { 1141 printf("dasysctlinit: unable to allocate sysctl tree\n"); 1142 return; 1143 } 1144 1145 /* 1146 * Now register the sysctl handler, so the user can the value on 1147 * the fly. 1148 */ 1149 SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree), 1150 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW, 1151 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I", 1152 "Minimum CDB size"); 1153 } 1154 1155 static int 1156 dacmdsizesysctl(SYSCTL_HANDLER_ARGS) 1157 { 1158 int error, value; 1159 1160 value = *(int *)arg1; 1161 1162 error = sysctl_handle_int(oidp, &value, 0, req); 1163 1164 if ((error != 0) 1165 || (req->newptr == NULL)) 1166 return (error); 1167 1168 /* 1169 * Acceptable values here are 6, 10 or 12. It's possible we may 1170 * support a 16 byte minimum command size in the future, since 1171 * there are now READ(16) and WRITE(16) commands defined in the 1172 * SBC-2 spec. 1173 */ 1174 if (value < 6) 1175 value = 6; 1176 else if ((value > 6) 1177 && (value <= 10)) 1178 value = 10; 1179 else if (value > 10) 1180 value = 12; 1181 1182 *(int *)arg1 = value; 1183 1184 return (0); 1185 } 1186 1187 static cam_status 1188 daregister(struct cam_periph *periph, void *arg) 1189 { 1190 int s; 1191 struct da_softc *softc; 1192 struct ccb_setasync csa; 1193 struct ccb_pathinq cpi; 1194 struct ccb_getdev *cgd; 1195 char tmpstr[80]; 1196 caddr_t match; 1197 1198 cgd = (struct ccb_getdev *)arg; 1199 if (periph == NULL) { 1200 printf("daregister: periph was NULL!!\n"); 1201 return(CAM_REQ_CMP_ERR); 1202 } 1203 1204 if (cgd == NULL) { 1205 printf("daregister: no getdev CCB, can't register device\n"); 1206 return(CAM_REQ_CMP_ERR); 1207 } 1208 1209 softc = malloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO); 1210 LIST_INIT(&softc->pending_ccbs); 1211 softc->state = DA_STATE_PROBE; 1212 bufq_init(&softc->buf_queue); 1213 if (SID_IS_REMOVABLE(&cgd->inq_data)) 1214 softc->flags |= DA_FLAG_PACK_REMOVABLE; 1215 if ((cgd->inq_data.flags & SID_CmdQue) != 0) 1216 softc->flags |= DA_FLAG_TAGGED_QUEUING; 1217 1218 periph->softc = softc; 1219 1220 cam_extend_set(daperiphs, periph->unit_number, periph); 1221 1222 /* 1223 * See if this device has any quirks. 1224 */ 1225 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1226 (caddr_t)da_quirk_table, 1227 sizeof(da_quirk_table)/sizeof(*da_quirk_table), 1228 sizeof(*da_quirk_table), scsi_inquiry_match); 1229 1230 if (match != NULL) 1231 softc->quirks = ((struct da_quirk_entry *)match)->quirks; 1232 else 1233 softc->quirks = DA_Q_NONE; 1234 1235 TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph); 1236 1237 /* Check if the SIM does not want 6 byte commands */ 1238 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1); 1239 cpi.ccb_h.func_code = XPT_PATH_INQ; 1240 xpt_action((union ccb *)&cpi); 1241 if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE)) 1242 softc->quirks |= DA_Q_NO_6_BYTE; 1243 1244 /* 1245 * RBC devices don't have to support READ(6), only READ(10). 1246 */ 1247 if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC) 1248 softc->minimum_cmd_size = 10; 1249 else 1250 softc->minimum_cmd_size = 6; 1251 1252 /* 1253 * Load the user's default, if any. 1254 */ 1255 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size", 1256 periph->unit_number); 1257 TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size); 1258 1259 /* 1260 * 6, 10 and 12 are the currently permissible values. 1261 */ 1262 if (softc->minimum_cmd_size < 6) 1263 softc->minimum_cmd_size = 6; 1264 else if ((softc->minimum_cmd_size > 6) 1265 && (softc->minimum_cmd_size <= 10)) 1266 softc->minimum_cmd_size = 10; 1267 else if (softc->minimum_cmd_size > 12) 1268 softc->minimum_cmd_size = 12; 1269 1270 /* 1271 * Block our timeout handler while we 1272 * add this softc to the dev list. 1273 */ 1274 s = splsoftclock(); 1275 SLIST_INSERT_HEAD(&softc_list, softc, links); 1276 splx(s); 1277 1278 /* 1279 * The DA driver supports a blocksize, but 1280 * we don't know the blocksize until we do 1281 * a read capacity. So, set a flag to 1282 * indicate that the blocksize is 1283 * unavailable right now. We'll clear the 1284 * flag as soon as we've done a read capacity. 1285 */ 1286 devstat_add_entry(&softc->device_stats, "da", 1287 periph->unit_number, 0, 1288 DEVSTAT_BS_UNAVAILABLE, 1289 SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI, 1290 DEVSTAT_PRIORITY_DISK); 1291 1292 /* 1293 * Register this media as a disk 1294 */ 1295 disk_create(periph->unit_number, &softc->disk, 0, &da_cdevsw); 1296 1297 /* 1298 * Add async callbacks for bus reset and 1299 * bus device reset calls. I don't bother 1300 * checking if this fails as, in most cases, 1301 * the system will function just fine without 1302 * them and the only alternative would be to 1303 * not attach the device on failure. 1304 */ 1305 xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5); 1306 csa.ccb_h.func_code = XPT_SASYNC_CB; 1307 csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE; 1308 csa.callback = daasync; 1309 csa.callback_arg = periph; 1310 xpt_action((union ccb *)&csa); 1311 /* 1312 * Lock this peripheral until we are setup. 1313 * This first call can't block 1314 */ 1315 (void)cam_periph_lock(periph, 0); 1316 xpt_schedule(periph, /*priority*/5); 1317 1318 return(CAM_REQ_CMP); 1319 } 1320 1321 static void 1322 dastart(struct cam_periph *periph, union ccb *start_ccb) 1323 { 1324 struct da_softc *softc; 1325 1326 softc = (struct da_softc *)periph->softc; 1327 1328 1329 switch (softc->state) { 1330 case DA_STATE_NORMAL: 1331 { 1332 /* Pull a buffer from the queue and get going on it */ 1333 struct buf *bp; 1334 int s; 1335 1336 /* 1337 * See if there is a buf with work for us to do.. 1338 */ 1339 s = splbio(); 1340 bp = bufq_first(&softc->buf_queue); 1341 if (periph->immediate_priority <= periph->pinfo.priority) { 1342 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1343 ("queuing for immediate ccb\n")); 1344 start_ccb->ccb_h.ccb_state = DA_CCB_WAITING; 1345 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1346 periph_links.sle); 1347 periph->immediate_priority = CAM_PRIORITY_NONE; 1348 splx(s); 1349 wakeup(&periph->ccb_list); 1350 } else if (bp == NULL) { 1351 splx(s); 1352 xpt_release_ccb(start_ccb); 1353 } else { 1354 int oldspl; 1355 u_int8_t tag_code; 1356 1357 bufq_remove(&softc->buf_queue, bp); 1358 1359 devstat_start_transaction(&softc->device_stats); 1360 1361 if ((bp->b_flags & B_ORDERED) != 0 1362 || (softc->flags & DA_FLAG_NEED_OTAG) != 0) { 1363 softc->flags &= ~DA_FLAG_NEED_OTAG; 1364 softc->ordered_tag_count++; 1365 tag_code = MSG_ORDERED_Q_TAG; 1366 } else { 1367 tag_code = MSG_SIMPLE_Q_TAG; 1368 } 1369 scsi_read_write(&start_ccb->csio, 1370 /*retries*/da_retry_count, 1371 dadone, 1372 tag_code, 1373 bp->b_flags & B_READ, 1374 /*byte2*/0, 1375 softc->minimum_cmd_size, 1376 bp->b_pblkno, 1377 bp->b_bcount / softc->params.secsize, 1378 bp->b_data, 1379 bp->b_bcount, 1380 /*sense_len*/SSD_FULL_SIZE, 1381 da_default_timeout * 1000); 1382 start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO; 1383 1384 /* 1385 * Block out any asyncronous callbacks 1386 * while we touch the pending ccb list. 1387 */ 1388 oldspl = splcam(); 1389 LIST_INSERT_HEAD(&softc->pending_ccbs, 1390 &start_ccb->ccb_h, periph_links.le); 1391 splx(oldspl); 1392 1393 /* We expect a unit attention from this device */ 1394 if ((softc->flags & DA_FLAG_RETRY_UA) != 0) { 1395 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA; 1396 softc->flags &= ~DA_FLAG_RETRY_UA; 1397 } 1398 1399 start_ccb->ccb_h.ccb_bp = bp; 1400 bp = bufq_first(&softc->buf_queue); 1401 splx(s); 1402 1403 xpt_action(start_ccb); 1404 } 1405 1406 if (bp != NULL) { 1407 /* Have more work to do, so ensure we stay scheduled */ 1408 xpt_schedule(periph, /* XXX priority */1); 1409 } 1410 break; 1411 } 1412 case DA_STATE_PROBE: 1413 { 1414 struct ccb_scsiio *csio; 1415 struct scsi_read_capacity_data *rcap; 1416 1417 rcap = malloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO); 1418 csio = &start_ccb->csio; 1419 scsi_read_capacity(csio, 1420 /*retries*/4, 1421 dadone, 1422 MSG_SIMPLE_Q_TAG, 1423 rcap, 1424 SSD_FULL_SIZE, 1425 /*timeout*/5000); 1426 start_ccb->ccb_h.ccb_bp = NULL; 1427 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE; 1428 xpt_action(start_ccb); 1429 break; 1430 } 1431 } 1432 } 1433 1434 static int 1435 cmd6workaround(union ccb *ccb) 1436 { 1437 struct scsi_rw_6 cmd6; 1438 struct scsi_rw_10 *cmd10; 1439 struct da_softc *softc; 1440 u_int8_t *cdb; 1441 int frozen; 1442 1443 cdb = ccb->csio.cdb_io.cdb_bytes; 1444 1445 /* Translation only possible if CDB is an array and cmd is R/W6 */ 1446 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 || 1447 (*cdb != READ_6 && *cdb != WRITE_6)) 1448 return 0; 1449 1450 xpt_print_path(ccb->ccb_h.path); 1451 printf("READ(6)/WRITE(6) not supported, " 1452 "increasing minimum_cmd_size to 10.\n"); 1453 softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc; 1454 softc->minimum_cmd_size = 10; 1455 1456 bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6)); 1457 cmd10 = (struct scsi_rw_10 *)cdb; 1458 cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10; 1459 cmd10->byte2 = 0; 1460 scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr); 1461 cmd10->reserved = 0; 1462 scsi_ulto2b(cmd6.length, cmd10->length); 1463 cmd10->control = cmd6.control; 1464 ccb->csio.cdb_len = sizeof(*cmd10); 1465 1466 /* Requeue request, unfreezing queue if necessary */ 1467 frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0; 1468 ccb->ccb_h.status = CAM_REQUEUE_REQ; 1469 xpt_action(ccb); 1470 if (frozen) { 1471 cam_release_devq(ccb->ccb_h.path, 1472 /*relsim_flags*/0, 1473 /*reduction*/0, 1474 /*timeout*/0, 1475 /*getcount_only*/0); 1476 } 1477 return (ERESTART); 1478 } 1479 1480 static void 1481 dadone(struct cam_periph *periph, union ccb *done_ccb) 1482 { 1483 struct da_softc *softc; 1484 struct ccb_scsiio *csio; 1485 1486 softc = (struct da_softc *)periph->softc; 1487 csio = &done_ccb->csio; 1488 switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) { 1489 case DA_CCB_BUFFER_IO: 1490 { 1491 struct buf *bp; 1492 int oldspl; 1493 1494 bp = (struct buf *)done_ccb->ccb_h.ccb_bp; 1495 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1496 int error; 1497 int s; 1498 int sf; 1499 1500 if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0) 1501 sf = SF_RETRY_UA; 1502 else 1503 sf = 0; 1504 1505 /* Retry selection timeouts */ 1506 sf |= SF_RETRY_SELTO; 1507 1508 if ((error = daerror(done_ccb, 0, sf)) == ERESTART) { 1509 /* 1510 * A retry was scheuled, so 1511 * just return. 1512 */ 1513 return; 1514 } 1515 if (error != 0) { 1516 struct buf *q_bp; 1517 1518 s = splbio(); 1519 1520 if (error == ENXIO) { 1521 /* 1522 * Catastrophic error. Mark our pack as 1523 * invalid. 1524 */ 1525 /* XXX See if this is really a media 1526 * change first. 1527 */ 1528 xpt_print_path(periph->path); 1529 printf("Invalidating pack\n"); 1530 softc->flags |= DA_FLAG_PACK_INVALID; 1531 } 1532 1533 /* 1534 * return all queued I/O with EIO, so that 1535 * the client can retry these I/Os in the 1536 * proper order should it attempt to recover. 1537 */ 1538 while ((q_bp = bufq_first(&softc->buf_queue)) 1539 != NULL) { 1540 bufq_remove(&softc->buf_queue, q_bp); 1541 q_bp->b_resid = q_bp->b_bcount; 1542 q_bp->b_error = EIO; 1543 q_bp->b_flags |= B_ERROR; 1544 biodone(q_bp); 1545 } 1546 splx(s); 1547 bp->b_error = error; 1548 bp->b_resid = bp->b_bcount; 1549 bp->b_flags |= B_ERROR; 1550 } else { 1551 bp->b_resid = csio->resid; 1552 bp->b_error = 0; 1553 if (bp->b_resid != 0) 1554 bp->b_flags |= B_ERROR; 1555 } 1556 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1557 cam_release_devq(done_ccb->ccb_h.path, 1558 /*relsim_flags*/0, 1559 /*reduction*/0, 1560 /*timeout*/0, 1561 /*getcount_only*/0); 1562 } else { 1563 bp->b_resid = csio->resid; 1564 if (csio->resid > 0) 1565 bp->b_flags |= B_ERROR; 1566 } 1567 1568 /* 1569 * Block out any asyncronous callbacks 1570 * while we touch the pending ccb list. 1571 */ 1572 oldspl = splcam(); 1573 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le); 1574 splx(oldspl); 1575 1576 if (softc->device_stats.busy_count == 0) 1577 softc->flags |= DA_FLAG_WENT_IDLE; 1578 1579 devstat_end_transaction_buf(&softc->device_stats, bp); 1580 biodone(bp); 1581 break; 1582 } 1583 case DA_CCB_PROBE: 1584 { 1585 struct scsi_read_capacity_data *rdcap; 1586 char announce_buf[80]; 1587 1588 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr; 1589 1590 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 1591 struct disk_params *dp; 1592 1593 dasetgeom(periph, rdcap); 1594 dp = &softc->params; 1595 snprintf(announce_buf, sizeof(announce_buf), 1596 "%luMB (%u %u byte sectors: %dH %dS/T %dC)", 1597 (unsigned long) (((u_int64_t)dp->secsize * 1598 dp->sectors) / (1024*1024)), dp->sectors, 1599 dp->secsize, dp->heads, dp->secs_per_track, 1600 dp->cylinders); 1601 } else { 1602 int error; 1603 1604 announce_buf[0] = '\0'; 1605 1606 /* 1607 * Retry any UNIT ATTENTION type errors. They 1608 * are expected at boot. 1609 */ 1610 error = daerror(done_ccb, 0, SF_RETRY_UA | 1611 SF_RETRY_SELTO | SF_NO_PRINT); 1612 if (error == ERESTART) { 1613 /* 1614 * A retry was scheuled, so 1615 * just return. 1616 */ 1617 return; 1618 } else if (error != 0) { 1619 struct scsi_sense_data *sense; 1620 int asc, ascq; 1621 int sense_key, error_code; 1622 int have_sense; 1623 cam_status status; 1624 struct ccb_getdev cgd; 1625 1626 /* Don't wedge this device's queue */ 1627 cam_release_devq(done_ccb->ccb_h.path, 1628 /*relsim_flags*/0, 1629 /*reduction*/0, 1630 /*timeout*/0, 1631 /*getcount_only*/0); 1632 1633 status = done_ccb->ccb_h.status; 1634 1635 xpt_setup_ccb(&cgd.ccb_h, 1636 done_ccb->ccb_h.path, 1637 /* priority */ 1); 1638 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 1639 xpt_action((union ccb *)&cgd); 1640 1641 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0) 1642 || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0) 1643 || ((status & CAM_AUTOSNS_VALID) == 0)) 1644 have_sense = FALSE; 1645 else 1646 have_sense = TRUE; 1647 1648 if (have_sense) { 1649 sense = &csio->sense_data; 1650 scsi_extract_sense(sense, &error_code, 1651 &sense_key, 1652 &asc, &ascq); 1653 } 1654 /* 1655 * Attach to anything that claims to be a 1656 * direct access or optical disk device, 1657 * as long as it doesn't return a "Logical 1658 * unit not supported" (0x25) error. 1659 */ 1660 if ((have_sense) && (asc != 0x25) 1661 && (error_code == SSD_CURRENT_ERROR)) 1662 snprintf(announce_buf, 1663 sizeof(announce_buf), 1664 "Attempt to query device " 1665 "size failed: %s, %s", 1666 scsi_sense_key_text[sense_key], 1667 scsi_sense_desc(asc,ascq, 1668 &cgd.inq_data)); 1669 else { 1670 if (have_sense) 1671 scsi_sense_print( 1672 &done_ccb->csio); 1673 else { 1674 xpt_print_path(periph->path); 1675 printf("got CAM status %#x\n", 1676 done_ccb->ccb_h.status); 1677 } 1678 1679 xpt_print_path(periph->path); 1680 printf("fatal error, failed" 1681 " to attach to device\n"); 1682 1683 /* 1684 * Free up resources. 1685 */ 1686 cam_periph_invalidate(periph); 1687 } 1688 } 1689 } 1690 free(rdcap, M_TEMP); 1691 if (announce_buf[0] != '\0') { 1692 xpt_announce_periph(periph, announce_buf); 1693 /* 1694 * Create our sysctl variables, now that we know 1695 * we have successfully attached. 1696 */ 1697 taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task); 1698 } 1699 softc->state = DA_STATE_NORMAL; 1700 /* 1701 * Since our peripheral may be invalidated by an error 1702 * above or an external event, we must release our CCB 1703 * before releasing the probe lock on the peripheral. 1704 * The peripheral will only go away once the last lock 1705 * is removed, and we need it around for the CCB release 1706 * operation. 1707 */ 1708 xpt_release_ccb(done_ccb); 1709 cam_periph_unlock(periph); 1710 return; 1711 } 1712 case DA_CCB_WAITING: 1713 { 1714 /* Caller will release the CCB */ 1715 wakeup(&done_ccb->ccb_h.cbfcnp); 1716 return; 1717 } 1718 case DA_CCB_DUMP: 1719 /* No-op. We're polling */ 1720 return; 1721 default: 1722 break; 1723 } 1724 xpt_release_ccb(done_ccb); 1725 } 1726 1727 static int 1728 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 1729 { 1730 struct da_softc *softc; 1731 struct cam_periph *periph; 1732 int error; 1733 1734 periph = xpt_path_periph(ccb->ccb_h.path); 1735 softc = (struct da_softc *)periph->softc; 1736 1737 /* 1738 * Automatically detect devices that do not support 1739 * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs. 1740 */ 1741 error = 0; 1742 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) { 1743 error = cmd6workaround(ccb); 1744 } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) == 1745 CAM_SCSI_STATUS_ERROR) 1746 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID) 1747 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) 1748 && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0) 1749 && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) { 1750 int sense_key, error_code, asc, ascq; 1751 1752 scsi_extract_sense(&ccb->csio.sense_data, 1753 &error_code, &sense_key, &asc, &ascq); 1754 if (sense_key == SSD_KEY_ILLEGAL_REQUEST) 1755 error = cmd6workaround(ccb); 1756 } 1757 if (error == ERESTART) 1758 return (ERESTART); 1759 1760 /* 1761 * XXX 1762 * Until we have a better way of doing pack validation, 1763 * don't treat UAs as errors. 1764 */ 1765 sense_flags |= SF_RETRY_UA; 1766 return(cam_periph_error(ccb, cam_flags, sense_flags, 1767 &softc->saved_ccb)); 1768 } 1769 1770 static void 1771 daprevent(struct cam_periph *periph, int action) 1772 { 1773 struct da_softc *softc; 1774 union ccb *ccb; 1775 int error; 1776 1777 softc = (struct da_softc *)periph->softc; 1778 1779 if (((action == PR_ALLOW) 1780 && (softc->flags & DA_FLAG_PACK_LOCKED) == 0) 1781 || ((action == PR_PREVENT) 1782 && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) { 1783 return; 1784 } 1785 1786 ccb = cam_periph_getccb(periph, /*priority*/1); 1787 1788 scsi_prevent(&ccb->csio, 1789 /*retries*/1, 1790 /*cbcfp*/dadone, 1791 MSG_SIMPLE_Q_TAG, 1792 action, 1793 SSD_FULL_SIZE, 1794 5000); 1795 1796 error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0, 1797 /*sense_flags*/0, &softc->device_stats); 1798 1799 if (error == 0) { 1800 if (action == PR_ALLOW) 1801 softc->flags &= ~DA_FLAG_PACK_LOCKED; 1802 else 1803 softc->flags |= DA_FLAG_PACK_LOCKED; 1804 } 1805 1806 xpt_release_ccb(ccb); 1807 } 1808 1809 static void 1810 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap) 1811 { 1812 struct ccb_calc_geometry ccg; 1813 struct da_softc *softc; 1814 struct disk_params *dp; 1815 1816 softc = (struct da_softc *)periph->softc; 1817 1818 dp = &softc->params; 1819 dp->secsize = scsi_4btoul(rdcap->length); 1820 dp->sectors = scsi_4btoul(rdcap->addr) + 1; 1821 /* 1822 * Have the controller provide us with a geometry 1823 * for this disk. The only time the geometry 1824 * matters is when we boot and the controller 1825 * is the only one knowledgeable enough to come 1826 * up with something that will make this a bootable 1827 * device. 1828 */ 1829 xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1); 1830 ccg.ccb_h.func_code = XPT_CALC_GEOMETRY; 1831 ccg.block_size = dp->secsize; 1832 ccg.volume_size = dp->sectors; 1833 ccg.heads = 0; 1834 ccg.secs_per_track = 0; 1835 ccg.cylinders = 0; 1836 xpt_action((union ccb*)&ccg); 1837 dp->heads = ccg.heads; 1838 dp->secs_per_track = ccg.secs_per_track; 1839 dp->cylinders = ccg.cylinders; 1840 } 1841 1842 static void 1843 dasendorderedtag(void *arg) 1844 { 1845 struct da_softc *softc; 1846 int s; 1847 1848 for (softc = SLIST_FIRST(&softc_list); 1849 softc != NULL; 1850 softc = SLIST_NEXT(softc, links)) { 1851 s = splsoftcam(); 1852 if ((softc->ordered_tag_count == 0) 1853 && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) { 1854 softc->flags |= DA_FLAG_NEED_OTAG; 1855 } 1856 if (softc->device_stats.busy_count > 0) 1857 softc->flags &= ~DA_FLAG_WENT_IDLE; 1858 1859 softc->ordered_tag_count = 0; 1860 splx(s); 1861 } 1862 /* Queue us up again */ 1863 timeout(dasendorderedtag, NULL, 1864 (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL); 1865 } 1866 1867 /* 1868 * Step through all DA peripheral drivers, and if the device is still open, 1869 * sync the disk cache to physical media. 1870 */ 1871 static void 1872 dashutdown(void * arg, int howto) 1873 { 1874 struct cam_periph *periph; 1875 struct da_softc *softc; 1876 1877 for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL; 1878 periph = TAILQ_NEXT(periph, unit_links)) { 1879 union ccb ccb; 1880 softc = (struct da_softc *)periph->softc; 1881 1882 /* 1883 * We only sync the cache if the drive is still open, and 1884 * if the drive is capable of it.. 1885 */ 1886 if (((softc->flags & DA_FLAG_OPEN) == 0) 1887 || (softc->quirks & DA_Q_NO_SYNC_CACHE)) 1888 continue; 1889 1890 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1); 1891 1892 ccb.ccb_h.ccb_state = DA_CCB_DUMP; 1893 scsi_synchronize_cache(&ccb.csio, 1894 /*retries*/1, 1895 /*cbfcnp*/dadone, 1896 MSG_SIMPLE_Q_TAG, 1897 /*begin_lba*/0, /* whole disk */ 1898 /*lb_count*/0, 1899 SSD_FULL_SIZE, 1900 5 * 60 * 1000); 1901 1902 xpt_polled_action(&ccb); 1903 1904 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1905 if (((ccb.ccb_h.status & CAM_STATUS_MASK) == 1906 CAM_SCSI_STATUS_ERROR) 1907 && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){ 1908 int error_code, sense_key, asc, ascq; 1909 1910 scsi_extract_sense(&ccb.csio.sense_data, 1911 &error_code, &sense_key, 1912 &asc, &ascq); 1913 1914 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 1915 scsi_sense_print(&ccb.csio); 1916 } else { 1917 xpt_print_path(periph->path); 1918 printf("Synchronize cache failed, status " 1919 "== 0x%x, scsi status == 0x%x\n", 1920 ccb.ccb_h.status, ccb.csio.scsi_status); 1921 } 1922 } 1923 1924 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0) 1925 cam_release_devq(ccb.ccb_h.path, 1926 /*relsim_flags*/0, 1927 /*reduction*/0, 1928 /*timeout*/0, 1929 /*getcount_only*/0); 1930 1931 } 1932 } 1933 1934 #else /* !_KERNEL */ 1935 1936 /* 1937 * XXX This is only left out of the kernel build to silence warnings. If, 1938 * for some reason this function is used in the kernel, the ifdefs should 1939 * be moved so it is included both in the kernel and userland. 1940 */ 1941 void 1942 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries, 1943 void (*cbfcnp)(struct cam_periph *, union ccb *), 1944 u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave, 1945 u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len, 1946 u_int32_t timeout) 1947 { 1948 struct scsi_format_unit *scsi_cmd; 1949 1950 scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes; 1951 scsi_cmd->opcode = FORMAT_UNIT; 1952 scsi_cmd->byte2 = byte2; 1953 scsi_ulto2b(ileave, scsi_cmd->interleave); 1954 1955 cam_fill_csio(csio, 1956 retries, 1957 cbfcnp, 1958 /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 1959 tag_action, 1960 data_ptr, 1961 dxfer_len, 1962 sense_len, 1963 sizeof(*scsi_cmd), 1964 timeout); 1965 } 1966 1967 #endif /* _KERNEL */ 1968