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 */ 30 31 #include <sys/param.h> 32 33 #ifdef _KERNEL 34 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/buf.h> 38 #include <sys/sysctl.h> 39 #include <sys/taskqueue.h> 40 #include <sys/lock.h> 41 #include <sys/conf.h> 42 #include <sys/devicestat.h> 43 #include <sys/disk.h> 44 #include <sys/dtype.h> 45 #include <sys/eventhandler.h> 46 #include <sys/malloc.h> 47 #include <sys/cons.h> 48 #include <sys/proc.h> 49 #include <sys/ioctl_compat.h> 50 51 #include <sys/buf2.h> 52 #include <sys/thread2.h> 53 #include <sys/mplock2.h> 54 55 #endif /* _KERNEL */ 56 57 #ifdef _KERNEL 58 #include <vm/pmap.h> 59 #endif 60 61 #ifndef _KERNEL 62 #include <stdio.h> 63 #include <string.h> 64 #endif /* _KERNEL */ 65 66 #include <sys/camlib.h> 67 #include "../cam.h" 68 #include "../cam_ccb.h" 69 #include "../cam_extend.h" 70 #include "../cam_periph.h" 71 #include "../cam_xpt_periph.h" 72 #include "../cam_sim.h" 73 74 #include "scsi_message.h" 75 76 #ifndef _KERNEL 77 #include "scsi_da.h" 78 #endif /* !_KERNEL */ 79 80 #ifdef _KERNEL 81 typedef enum { 82 DA_STATE_PROBE, 83 DA_STATE_PROBE2, 84 DA_STATE_NORMAL 85 } da_state; 86 87 typedef enum { 88 DA_FLAG_PACK_INVALID = 0x001, 89 DA_FLAG_NEW_PACK = 0x002, 90 DA_FLAG_PACK_LOCKED = 0x004, 91 DA_FLAG_PACK_REMOVABLE = 0x008, 92 DA_FLAG_TAGGED_QUEUING = 0x010, 93 DA_FLAG_NEED_OTAG = 0x020, 94 DA_FLAG_WENT_IDLE = 0x040, 95 DA_FLAG_RETRY_UA = 0x080, 96 DA_FLAG_OPEN = 0x100, 97 DA_FLAG_SCTX_INIT = 0x200, 98 DA_FLAG_RD_LIMIT = 0x400, 99 DA_FLAG_WR_LIMIT = 0x800, 100 DA_FLAG_CAN_TRIM = 0x1000 101 } da_flags; 102 103 typedef enum { 104 DA_Q_NONE = 0x00, 105 DA_Q_NO_SYNC_CACHE = 0x01, 106 DA_Q_NO_6_BYTE = 0x02, 107 DA_Q_NO_PREVENT = 0x04 108 } da_quirks; 109 110 typedef enum { 111 DA_CCB_PROBE = 0x01, 112 DA_CCB_PROBE2 = 0x02, 113 DA_CCB_BUFFER_IO = 0x03, 114 DA_CCB_WAITING = 0x04, 115 DA_CCB_DUMP = 0x05, 116 DA_CCB_TRIM = 0x06, 117 DA_CCB_TYPE_MASK = 0x0F, 118 DA_CCB_RETRY_UA = 0x10 119 } da_ccb_state; 120 121 /* Offsets into our private area for storing information */ 122 #define ccb_state ppriv_field0 123 #define ccb_bio ppriv_ptr1 124 125 struct disk_params { 126 u_int8_t heads; 127 u_int32_t cylinders; 128 u_int8_t secs_per_track; 129 u_int32_t secsize; /* Number of bytes/sector */ 130 u_int64_t sectors; /* total number sectors */ 131 }; 132 133 #define TRIM_MAX_BLOCKS 8 134 #define TRIM_MAX_RANGES TRIM_MAX_BLOCKS * 64 135 struct trim_request { 136 uint8_t data[TRIM_MAX_RANGES * 8]; 137 struct bio *bios[TRIM_MAX_RANGES]; 138 }; 139 140 struct da_softc { 141 struct bio_queue_head bio_queue_rd; 142 struct bio_queue_head bio_queue_wr; 143 struct bio_queue_head bio_queue_trim; 144 struct devstat device_stats; 145 SLIST_ENTRY(da_softc) links; 146 LIST_HEAD(, ccb_hdr) pending_ccbs; 147 da_state state; 148 da_flags flags; 149 da_quirks quirks; 150 int minimum_cmd_size; 151 int ordered_tag_count; 152 int outstanding_cmds_rd; 153 int outstanding_cmds_wr; 154 int trim_max_ranges; 155 int trim_running; 156 int trim_enabled; 157 struct disk_params params; 158 struct disk disk; 159 union ccb saved_ccb; 160 struct task sysctl_task; 161 struct sysctl_ctx_list sysctl_ctx; 162 struct sysctl_oid *sysctl_tree; 163 struct callout sendordered_c; 164 struct trim_request trim_req; 165 }; 166 167 struct da_quirk_entry { 168 struct scsi_inquiry_pattern inq_pat; 169 da_quirks quirks; 170 }; 171 172 static const char quantum[] = "QUANTUM"; 173 static const char microp[] = "MICROP"; 174 175 static struct da_quirk_entry da_quirk_table[] = 176 { 177 /* SPI, FC devices */ 178 { 179 /* 180 * Fujitsu M2513A MO drives. 181 * Tested devices: M2513A2 firmware versions 1200 & 1300. 182 * (dip switch selects whether T_DIRECT or T_OPTICAL device) 183 * Reported by: W.Scholten <whs@xs4all.nl> 184 */ 185 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"}, 186 /*quirks*/ DA_Q_NO_SYNC_CACHE 187 }, 188 { 189 /* See above. */ 190 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"}, 191 /*quirks*/ DA_Q_NO_SYNC_CACHE 192 }, 193 { 194 /* 195 * This particular Fujitsu drive doesn't like the 196 * synchronize cache command. 197 * Reported by: Tom Jackson <toj@gorilla.net> 198 */ 199 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"}, 200 /*quirks*/ DA_Q_NO_SYNC_CACHE 201 }, 202 { 203 /* 204 * This drive doesn't like the synchronize cache command 205 * either. Reported by: Matthew Jacob <mjacob@feral.com> 206 * in NetBSD PR kern/6027, August 24, 1998. 207 */ 208 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"}, 209 /*quirks*/ DA_Q_NO_SYNC_CACHE 210 }, 211 { 212 /* 213 * This drive doesn't like the synchronize cache command 214 * either. Reported by: Hellmuth Michaelis (hm@kts.org) 215 * (PR 8882). 216 */ 217 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"}, 218 /*quirks*/ DA_Q_NO_SYNC_CACHE 219 }, 220 { 221 /* 222 * Doesn't like the synchronize cache command. 223 * Reported by: Blaz Zupan <blaz@gold.amis.net> 224 */ 225 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"}, 226 /*quirks*/ DA_Q_NO_SYNC_CACHE 227 }, 228 { 229 /* 230 * Doesn't like the synchronize cache command. 231 * Reported by: Blaz Zupan <blaz@gold.amis.net> 232 */ 233 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"}, 234 /*quirks*/ DA_Q_NO_SYNC_CACHE 235 }, 236 { 237 /* 238 * Doesn't like the synchronize cache command. 239 */ 240 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"}, 241 /*quirks*/ DA_Q_NO_SYNC_CACHE 242 }, 243 { 244 /* 245 * Doesn't like the synchronize cache command. 246 * Reported by: walter@pelissero.de 247 */ 248 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"}, 249 /*quirks*/ DA_Q_NO_SYNC_CACHE 250 }, 251 { 252 /* 253 * Doesn't work correctly with 6 byte reads/writes. 254 * Returns illegal request, and points to byte 9 of the 255 * 6-byte CDB. 256 * Reported by: Adam McDougall <bsdx@spawnet.com> 257 */ 258 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"}, 259 /*quirks*/ DA_Q_NO_6_BYTE 260 }, 261 { 262 /* See above. */ 263 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"}, 264 /*quirks*/ DA_Q_NO_6_BYTE 265 }, 266 { 267 /* 268 * Doesn't like the synchronize cache command. 269 * Reported by: walter@pelissero.de 270 */ 271 {T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"}, 272 /*quirks*/ DA_Q_NO_SYNC_CACHE 273 }, 274 { 275 /* 276 * The CISS RAID controllers do not support SYNC_CACHE 277 */ 278 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"}, 279 /*quirks*/ DA_Q_NO_SYNC_CACHE 280 }, 281 { 282 /* 283 * The same goes for the mly(4) controllers 284 */ 285 {T_DIRECT, SIP_MEDIA_FIXED, "MLY*", "*", "MYLX"}, 286 /*quirks*/ DA_Q_NO_SYNC_CACHE 287 }, 288 /* 289 * USB mass storage devices supported by umass(4) 290 * 291 * NOTE: USB attachments automatically set DA_Q_NO_SYNC_CACHE so 292 * it does not have to be specified here. 293 */ 294 { 295 /* 296 * Creative Nomad MUVO mp3 player (USB) 297 * PR: kern/53094 298 */ 299 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"}, 300 /*quirks*/ DA_Q_NO_PREVENT 301 }, 302 { 303 /* 304 * Sigmatel USB Flash MP3 Player 305 * PR: kern/57046 306 */ 307 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"}, 308 /*quirks*/ DA_Q_NO_PREVENT 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_PREVENT 317 }, 318 { 319 /* 320 * Creative MUVO Slim mp3 player (USB) 321 * PR: usb/86131 322 */ 323 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "MuVo Slim", 324 "*"}, /*quirks*/ DA_Q_NO_PREVENT 325 }, 326 { 327 /* 328 * Philips USB Key Audio KEY013 329 * PR: usb/68412 330 */ 331 {T_DIRECT, SIP_MEDIA_REMOVABLE, "PHILIPS", "Key*", "*"}, 332 /*quirks*/ DA_Q_NO_PREVENT 333 }, 334 }; 335 336 static d_open_t daopen; 337 static d_close_t daclose; 338 static d_strategy_t dastrategy; 339 static d_dump_t dadump; 340 static d_ioctl_t daioctl; 341 static periph_init_t dainit; 342 static void daasync(void *callback_arg, u_int32_t code, 343 struct cam_path *path, void *arg); 344 static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS); 345 static periph_ctor_t daregister; 346 static periph_dtor_t dacleanup; 347 static periph_start_t dastart; 348 static periph_oninv_t daoninvalidate; 349 static void dadone(struct cam_periph *periph, 350 union ccb *done_ccb); 351 static int daerror(union ccb *ccb, u_int32_t cam_flags, 352 u_int32_t sense_flags); 353 static void daprevent(struct cam_periph *periph, int action); 354 static int dagetcapacity(struct cam_periph *periph); 355 static int dacheckmedia(struct cam_periph *periph); 356 static void dasetgeom(struct cam_periph *periph, uint32_t block_len, 357 uint64_t maxsector); 358 static void daflushbioq(struct bio_queue_head *bioq, int error); 359 static timeout_t dasendorderedtag; 360 static void dashutdown(void *arg, int howto); 361 362 #ifndef DA_DEFAULT_TIMEOUT 363 #define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */ 364 #endif 365 366 #ifndef DA_DEFAULT_RETRY 367 #define DA_DEFAULT_RETRY 4 368 #endif 369 370 #ifndef DA_DEFAULT_SEND_ORDERED 371 #define DA_DEFAULT_SEND_ORDERED 1 372 #endif 373 374 static int da_retry_count = DA_DEFAULT_RETRY; 375 static int da_default_timeout = DA_DEFAULT_TIMEOUT; 376 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED; 377 static struct callout dasendorderedtag_ch; 378 379 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0, 380 "CAM Direct Access Disk driver"); 381 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW, 382 &da_retry_count, 0, "Normal I/O retry count"); 383 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count); 384 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW, 385 &da_default_timeout, 0, "Normal I/O timeout (in seconds)"); 386 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout); 387 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW, 388 &da_send_ordered, 0, "Send Ordered Tags"); 389 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered); 390 391 /* 392 * DA_ORDEREDTAG_INTERVAL determines how often, relative 393 * to the default timeout, we check to see whether an ordered 394 * tagged transaction is appropriate to prevent simple tag 395 * starvation. Since we'd like to ensure that there is at least 396 * 1/2 of the timeout length left for a starved transaction to 397 * complete after we've sent an ordered tag, we must poll at least 398 * four times in every timeout period. This takes care of the worst 399 * case where a starved transaction starts during an interval that 400 * meets the requirement "don't send an ordered tag" test so it takes 401 * us two intervals to determine that a tag must be sent. 402 */ 403 #ifndef DA_ORDEREDTAG_INTERVAL 404 #define DA_ORDEREDTAG_INTERVAL 4 405 #endif 406 407 static struct periph_driver dadriver = 408 { 409 dainit, "da", 410 TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0 411 }; 412 413 PERIPHDRIVER_DECLARE(da, dadriver); 414 415 static struct dev_ops da_ops = { 416 { "da", 0, D_DISK | D_MPSAFE }, 417 .d_open = daopen, 418 .d_close = daclose, 419 .d_read = physread, 420 .d_write = physwrite, 421 .d_strategy = dastrategy, 422 .d_dump = dadump, 423 .d_ioctl = daioctl 424 }; 425 426 static struct extend_array *daperiphs; 427 428 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers"); 429 430 static int 431 daioctl(struct dev_ioctl_args *ap) 432 { 433 int unit; 434 int error = 0; 435 struct buf *bp; 436 struct cam_periph *periph; 437 int byte_count; 438 439 off_t *del_num = (off_t*)ap->a_data; 440 off_t bytes_left; 441 off_t bytes_start; 442 443 cdev_t dev = ap->a_head.a_dev; 444 445 446 unit = dkunit(dev); 447 periph = cam_extend_get(daperiphs, unit); 448 if (periph == NULL) 449 return(ENXIO); 450 451 switch (ap->a_cmd) { 452 case IOCTLTRIM: 453 { 454 455 bytes_left = del_num[1]; 456 bytes_start = del_num[0]; 457 458 /* TRIM occurs on 512-byte sectors. */ 459 KKASSERT((bytes_left % 512) == 0); 460 KKASSERT((bytes_start% 512) == 0); 461 462 463 /* Break TRIM up into int-sized commands because of b_bcount */ 464 while(bytes_left) { 465 466 /* 467 * Rather than than squezing out more blocks in b_bcount 468 * and having to break up the TRIM request in da_start(), 469 * we ensure we can always TRIM this many bytes with one 470 * TRIM command (this happens if the device only 471 * supports one TRIM block). 472 * 473 * With min TRIM blksize of 1, TRIM command free 474 * 4194240 blks(64*65535): each LBA range can address 475 * 65535 blks and there 64 such ranges in a 512-byte 476 * block. And, 4194240 * 512 = 0x7FFF8000 477 * 478 */ 479 byte_count = MIN(bytes_left,0x7FFF8000); 480 bp = getnewbuf(0,0,0,1); 481 482 bp->b_cmd = BUF_CMD_FREEBLKS; 483 bp->b_bio1.bio_offset = bytes_start; 484 bp->b_bcount = byte_count; 485 bp->b_bio1.bio_flags |= BIO_SYNC; 486 bp->b_bio1.bio_done = biodone_sync; 487 488 dev_dstrategy(ap->a_head.a_dev, &bp->b_bio1); 489 490 if (biowait(&bp->b_bio1, "TRIM")) { 491 kprintf("Error:%d\n", bp->b_error); 492 return(bp->b_error ? bp->b_error : EIO); 493 } 494 brelse(bp); 495 bytes_left -= byte_count; 496 bytes_start += byte_count; 497 } 498 break; 499 } 500 default: 501 return(EINVAL); 502 } 503 504 return(error); 505 } 506 507 static int 508 daopen(struct dev_open_args *ap) 509 { 510 cdev_t dev = ap->a_head.a_dev; 511 struct cam_periph *periph; 512 struct da_softc *softc; 513 struct disk_info info; 514 int unit; 515 int error; 516 517 unit = dkunit(dev); 518 periph = cam_extend_get(daperiphs, unit); 519 if (periph == NULL) { 520 return (ENXIO); 521 } 522 523 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 524 return(ENXIO); 525 } 526 527 cam_periph_lock(periph); 528 if ((error = cam_periph_hold(periph, PCATCH)) != 0) { 529 cam_periph_unlock(periph); 530 cam_periph_release(periph); 531 return (error); 532 } 533 534 unit = periph->unit_number; 535 softc = (struct da_softc *)periph->softc; 536 537 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 538 ("daopen: dev=%s (unit %d)\n", devtoname(dev), 539 unit)); 540 541 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) { 542 /* Invalidate our pack information. */ 543 disk_invalidate(&softc->disk); 544 softc->flags &= ~DA_FLAG_PACK_INVALID; 545 } 546 547 error = dacheckmedia(periph); 548 softc->flags |= DA_FLAG_OPEN; 549 550 if (error == 0) { 551 struct ccb_getdev cgd; 552 553 /* Build disk information structure */ 554 bzero(&info, sizeof(info)); 555 info.d_type = DTYPE_SCSI; 556 557 /* 558 * Grab the inquiry data to get the vendor and product names. 559 * Put them in the typename and packname for the label. 560 */ 561 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1); 562 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 563 xpt_action((union ccb *)&cgd); 564 565 /* 566 * Check to see whether or not the blocksize is set yet. 567 * If it isn't, set it and then clear the blocksize 568 * unavailable flag for the device statistics. 569 */ 570 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){ 571 softc->device_stats.block_size = softc->params.secsize; 572 softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE; 573 } 574 } 575 576 if (error == 0) { 577 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 && 578 (softc->quirks & DA_Q_NO_PREVENT) == 0) 579 daprevent(periph, PR_PREVENT); 580 } else { 581 softc->flags &= ~DA_FLAG_OPEN; 582 cam_periph_release(periph); 583 } 584 cam_periph_unhold(periph, 1); 585 return (error); 586 } 587 588 static int 589 daclose(struct dev_close_args *ap) 590 { 591 cdev_t dev = ap->a_head.a_dev; 592 struct cam_periph *periph; 593 struct da_softc *softc; 594 int unit; 595 int error; 596 597 unit = dkunit(dev); 598 periph = cam_extend_get(daperiphs, unit); 599 if (periph == NULL) 600 return (ENXIO); 601 602 cam_periph_lock(periph); 603 if ((error = cam_periph_hold(periph, 0)) != 0) { 604 cam_periph_unlock(periph); 605 cam_periph_release(periph); 606 return (error); 607 } 608 609 softc = (struct da_softc *)periph->softc; 610 611 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) { 612 union ccb *ccb; 613 614 ccb = cam_periph_getccb(periph, /*priority*/1); 615 616 scsi_synchronize_cache(&ccb->csio, 617 /*retries*/1, 618 /*cbfcnp*/dadone, 619 MSG_SIMPLE_Q_TAG, 620 /*begin_lba*/0,/* Cover the whole disk */ 621 /*lb_count*/0, 622 SSD_FULL_SIZE, 623 5 * 60 * 1000); 624 625 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0, 626 /*sense_flags*/SF_RETRY_UA, 627 &softc->device_stats); 628 629 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 630 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == 631 CAM_SCSI_STATUS_ERROR) { 632 int asc, ascq; 633 int sense_key, error_code; 634 635 scsi_extract_sense(&ccb->csio.sense_data, 636 &error_code, 637 &sense_key, 638 &asc, &ascq); 639 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 640 scsi_sense_print(&ccb->csio); 641 } else { 642 xpt_print(periph->path, "Synchronize cache " 643 "failed, status == 0x%x, scsi status == " 644 "0x%x\n", ccb->csio.ccb_h.status, 645 ccb->csio.scsi_status); 646 } 647 } 648 649 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 650 cam_release_devq(ccb->ccb_h.path, 651 /*relsim_flags*/0, 652 /*reduction*/0, 653 /*timeout*/0, 654 /*getcount_only*/0); 655 656 xpt_release_ccb(ccb); 657 658 } 659 660 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) { 661 if ((softc->quirks & DA_Q_NO_PREVENT) == 0) 662 daprevent(periph, PR_ALLOW); 663 /* 664 * If we've got removeable media, mark the blocksize as 665 * unavailable, since it could change when new media is 666 * inserted. 667 */ 668 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE; 669 } 670 671 /* 672 * Don't compound any ref counting software bugs with more. 673 */ 674 if (softc->flags & DA_FLAG_OPEN) { 675 softc->flags &= ~DA_FLAG_OPEN; 676 cam_periph_release(periph); 677 } else { 678 xpt_print(periph->path, 679 "daclose() called on an already closed device!\n"); 680 } 681 cam_periph_unhold(periph, 1); 682 return (0); 683 } 684 685 /* 686 * Actually translate the requested transfer into one the physical driver 687 * can understand. The transfer is described by a buf and will include 688 * only one physical transfer. 689 */ 690 static int 691 dastrategy(struct dev_strategy_args *ap) 692 { 693 cdev_t dev = ap->a_head.a_dev; 694 struct bio *bio = ap->a_bio; 695 struct buf *bp = bio->bio_buf; 696 struct cam_periph *periph; 697 struct da_softc *softc; 698 u_int unit; 699 700 unit = dkunit(dev); 701 periph = cam_extend_get(daperiphs, unit); 702 if (periph == NULL) { 703 bp->b_error = ENXIO; 704 goto bad; 705 } 706 softc = (struct da_softc *)periph->softc; 707 708 cam_periph_lock(periph); 709 710 #if 0 711 /* 712 * check it's not too big a transfer for our adapter 713 */ 714 scsi_minphys(bp, &sd_switch); 715 #endif 716 717 /* 718 * Mask interrupts so that the pack cannot be invalidated until 719 * after we are in the queue. Otherwise, we might not properly 720 * clean up one of the buffers. 721 */ 722 723 /* 724 * If the device has been made invalid, error out 725 */ 726 if ((softc->flags & DA_FLAG_PACK_INVALID)) { 727 cam_periph_unlock(periph); 728 bp->b_error = ENXIO; 729 goto bad; 730 } 731 732 /* 733 * Place it in the queue of disk activities for this disk 734 */ 735 if (bp->b_cmd == BUF_CMD_WRITE || bp->b_cmd == BUF_CMD_FLUSH) 736 bioqdisksort(&softc->bio_queue_wr, bio); 737 else if (bp->b_cmd == BUF_CMD_FREEBLKS) 738 bioqdisksort(&softc->bio_queue_trim, bio); 739 else 740 bioqdisksort(&softc->bio_queue_rd, bio); 741 742 /* 743 * Schedule ourselves for performing the work. 744 */ 745 xpt_schedule(periph, /* XXX priority */1); 746 cam_periph_unlock(periph); 747 748 return(0); 749 bad: 750 bp->b_flags |= B_ERROR; 751 752 /* 753 * Correctly set the buf to indicate a completed xfer 754 */ 755 bp->b_resid = bp->b_bcount; 756 biodone(bio); 757 return(0); 758 } 759 760 static int 761 dadump(struct dev_dump_args *ap) 762 { 763 cdev_t dev = ap->a_head.a_dev; 764 struct cam_periph *periph; 765 struct da_softc *softc; 766 u_int unit; 767 u_int32_t secsize; 768 struct ccb_scsiio csio; 769 770 unit = dkunit(dev); 771 periph = cam_extend_get(daperiphs, unit); 772 if (periph == NULL) 773 return (ENXIO); 774 775 softc = (struct da_softc *)periph->softc; 776 cam_periph_lock(periph); 777 secsize = softc->params.secsize; /* XXX: or ap->a_secsize? */ 778 779 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) { 780 cam_periph_unlock(periph); 781 return (ENXIO); 782 } 783 784 /* 785 * because length == 0 means we are supposed to flush cache, we only 786 * try to write something if length > 0. 787 */ 788 if (ap->a_length > 0) { 789 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1); 790 csio.ccb_h.flags |= CAM_POLLED; 791 csio.ccb_h.ccb_state = DA_CCB_DUMP; 792 scsi_read_write(&csio, 793 /*retries*/1, 794 dadone, 795 MSG_ORDERED_Q_TAG, 796 /*read*/FALSE, 797 /*byte2*/0, 798 /*minimum_cmd_size*/ softc->minimum_cmd_size, 799 ap->a_offset / secsize, 800 ap->a_length / secsize, 801 /*data_ptr*/(u_int8_t *) ap->a_virtual, 802 /*dxfer_len*/ap->a_length, 803 /*sense_len*/SSD_FULL_SIZE, 804 DA_DEFAULT_TIMEOUT * 1000); 805 xpt_polled_action((union ccb *)&csio); 806 807 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 808 kprintf("Aborting dump due to I/O error.\n"); 809 if ((csio.ccb_h.status & CAM_STATUS_MASK) == 810 CAM_SCSI_STATUS_ERROR) 811 scsi_sense_print(&csio); 812 else 813 kprintf("status == 0x%x, scsi status == 0x%x\n", 814 csio.ccb_h.status, csio.scsi_status); 815 return(EIO); 816 } 817 cam_periph_unlock(periph); 818 return 0; 819 } 820 821 /* 822 * Sync the disk cache contents to the physical media. 823 */ 824 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) { 825 826 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1); 827 csio.ccb_h.ccb_state = DA_CCB_DUMP; 828 scsi_synchronize_cache(&csio, 829 /*retries*/1, 830 /*cbfcnp*/dadone, 831 MSG_SIMPLE_Q_TAG, 832 /*begin_lba*/0,/* Cover the whole disk */ 833 /*lb_count*/0, 834 SSD_FULL_SIZE, 835 5 * 60 * 1000); 836 xpt_polled_action((union ccb *)&csio); 837 838 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 839 if ((csio.ccb_h.status & CAM_STATUS_MASK) == 840 CAM_SCSI_STATUS_ERROR) { 841 int asc, ascq; 842 int sense_key, error_code; 843 844 scsi_extract_sense(&csio.sense_data, 845 &error_code, 846 &sense_key, 847 &asc, &ascq); 848 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 849 scsi_sense_print(&csio); 850 } else { 851 xpt_print(periph->path, "Synchronize cache " 852 "failed, status == 0x%x, scsi status == " 853 "0x%x\n", csio.ccb_h.status, 854 csio.scsi_status); 855 } 856 } 857 } 858 cam_periph_unlock(periph); 859 return (0); 860 } 861 862 static void 863 dainit(void) 864 { 865 cam_status status; 866 867 /* 868 * Create our extend array for storing the devices we attach to. 869 */ 870 daperiphs = cam_extend_new(); 871 if (daperiphs == NULL) { 872 kprintf("da: Failed to alloc extend array!\n"); 873 return; 874 } 875 876 callout_init(&dasendorderedtag_ch); 877 878 /* 879 * Install a global async callback. This callback will 880 * receive async callbacks like "new device found". 881 */ 882 status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL); 883 884 if (status != CAM_REQ_CMP) { 885 kprintf("da: Failed to attach master async callback " 886 "due to status 0x%x!\n", status); 887 } else if (da_send_ordered) { 888 889 /* Register our shutdown event handler */ 890 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown, 891 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL) 892 kprintf("%s: shutdown event registration failed!\n", 893 __func__); 894 } 895 } 896 897 static void 898 daoninvalidate(struct cam_periph *periph) 899 { 900 struct da_softc *softc; 901 902 softc = (struct da_softc *)periph->softc; 903 904 /* 905 * De-register any async callbacks. 906 */ 907 xpt_register_async(0, daasync, periph, periph->path); 908 909 softc->flags |= DA_FLAG_PACK_INVALID; 910 911 /* 912 * Return all queued I/O with ENXIO. 913 * XXX Handle any transactions queued to the card 914 * with XPT_ABORT_CCB. 915 */ 916 daflushbioq(&softc->bio_queue_trim, ENXIO); 917 daflushbioq(&softc->bio_queue_wr, ENXIO); 918 daflushbioq(&softc->bio_queue_rd, ENXIO); 919 xpt_print(periph->path, "lost device\n"); 920 } 921 922 static void 923 daflushbioq(struct bio_queue_head *bioq, int error) 924 { 925 struct bio *q_bio; 926 struct buf *q_bp; 927 928 while ((q_bio = bioq_first(bioq)) != NULL){ 929 bioq_remove(bioq, q_bio); 930 q_bp = q_bio->bio_buf; 931 q_bp->b_resid = q_bp->b_bcount; 932 q_bp->b_error = error; 933 q_bp->b_flags |= B_ERROR; 934 biodone(q_bio); 935 } 936 } 937 938 static void 939 dacleanup(struct cam_periph *periph) 940 { 941 struct da_softc *softc; 942 943 softc = (struct da_softc *)periph->softc; 944 945 devstat_remove_entry(&softc->device_stats); 946 cam_extend_release(daperiphs, periph->unit_number); 947 xpt_print(periph->path, "removing device entry\n"); 948 /* 949 * If we can't free the sysctl tree, oh well... 950 */ 951 if ((softc->flags & DA_FLAG_SCTX_INIT) != 0 952 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) { 953 xpt_print(periph->path, "can't remove sysctl context\n"); 954 } 955 periph->softc = NULL; 956 if (softc->disk.d_rawdev) { 957 cam_periph_unlock(periph); 958 disk_destroy(&softc->disk); 959 cam_periph_lock(periph); 960 } 961 962 callout_stop(&softc->sendordered_c); 963 kfree(softc, M_DEVBUF); 964 } 965 966 static void 967 daasync(void *callback_arg, u_int32_t code, 968 struct cam_path *path, void *arg) 969 { 970 struct cam_periph *periph; 971 972 periph = (struct cam_periph *)callback_arg; 973 974 switch (code) { 975 case AC_FOUND_DEVICE: 976 { 977 struct ccb_getdev *cgd; 978 cam_status status; 979 980 cgd = (struct ccb_getdev *)arg; 981 if (cgd == NULL) 982 break; 983 984 if (SID_TYPE(&cgd->inq_data) != T_DIRECT 985 && SID_TYPE(&cgd->inq_data) != T_RBC 986 && SID_TYPE(&cgd->inq_data) != T_OPTICAL) 987 break; 988 989 /* 990 * Don't complain if a valid peripheral is already attached. 991 */ 992 periph = cam_periph_find(cgd->ccb_h.path, "da"); 993 if (periph && (periph->flags & CAM_PERIPH_INVALID) == 0) 994 break; 995 996 /* 997 * Allocate a peripheral instance for 998 * this device and start the probe 999 * process. 1000 */ 1001 status = cam_periph_alloc(daregister, daoninvalidate, 1002 dacleanup, dastart, 1003 "da", CAM_PERIPH_BIO, 1004 cgd->ccb_h.path, daasync, 1005 AC_FOUND_DEVICE, cgd); 1006 1007 if (status != CAM_REQ_CMP && status != CAM_REQ_INPROG) { 1008 kprintf("%s: Unable to attach to new device " 1009 "due to status 0x%x\n", __func__, status); 1010 } 1011 break; 1012 } 1013 case AC_SENT_BDR: 1014 case AC_BUS_RESET: 1015 { 1016 struct da_softc *softc; 1017 struct ccb_hdr *ccbh; 1018 1019 softc = (struct da_softc *)periph->softc; 1020 /* 1021 * Don't fail on the expected unit attention 1022 * that will occur. 1023 */ 1024 softc->flags |= DA_FLAG_RETRY_UA; 1025 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le) 1026 ccbh->ccb_state |= DA_CCB_RETRY_UA; 1027 /* FALLTHROUGH*/ 1028 } 1029 default: 1030 cam_periph_async(periph, code, path, arg); 1031 break; 1032 } 1033 } 1034 1035 static void 1036 dasysctlinit(void *context, int pending) 1037 { 1038 struct cam_periph *periph; 1039 struct da_softc *softc; 1040 char tmpstr[80], tmpstr2[80]; 1041 1042 get_mplock(); 1043 periph = (struct cam_periph *)context; 1044 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 1045 rel_mplock(); 1046 return; 1047 } 1048 1049 softc = (struct da_softc *)periph->softc; 1050 ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number); 1051 ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number); 1052 1053 sysctl_ctx_init(&softc->sysctl_ctx); 1054 softc->flags |= DA_FLAG_SCTX_INIT; 1055 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 1056 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2, 1057 CTLFLAG_RD, 0, tmpstr); 1058 if (softc->sysctl_tree == NULL) { 1059 kprintf("%s: unable to allocate sysctl tree\n", __func__); 1060 cam_periph_release(periph); 1061 rel_mplock(); 1062 return; 1063 } 1064 1065 /* 1066 * Now register the sysctl handler, so the user can the value on 1067 * the fly. 1068 */ 1069 SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree), 1070 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW, 1071 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I", 1072 "Minimum CDB size"); 1073 1074 /* Only create the option if the device supports TRIM */ 1075 if (softc->disk.d_info.d_trimflag) { 1076 SYSCTL_ADD_INT(&softc->sysctl_ctx, 1077 SYSCTL_CHILDREN(softc->sysctl_tree), 1078 OID_AUTO, 1079 "trim_enabled", 1080 CTLFLAG_RW, 1081 &softc->trim_enabled, 1082 0, 1083 "Enable TRIM for this device (SSD))"); 1084 } 1085 1086 cam_periph_release(periph); 1087 rel_mplock(); 1088 } 1089 1090 static int 1091 dacmdsizesysctl(SYSCTL_HANDLER_ARGS) 1092 { 1093 int error, value; 1094 1095 value = *(int *)arg1; 1096 1097 error = sysctl_handle_int(oidp, &value, 0, req); 1098 1099 if ((error != 0) 1100 || (req->newptr == NULL)) 1101 return (error); 1102 1103 /* 1104 * Acceptable values here are 6, 10 or 12, or 16. 1105 */ 1106 if (value < 6) 1107 value = 6; 1108 else if ((value > 6) 1109 && (value <= 10)) 1110 value = 10; 1111 else if ((value > 10) 1112 && (value <= 12)) 1113 value = 12; 1114 else if (value > 12) 1115 value = 16; 1116 1117 *(int *)arg1 = value; 1118 1119 return (0); 1120 } 1121 1122 static cam_status 1123 daregister(struct cam_periph *periph, void *arg) 1124 { 1125 struct da_softc *softc; 1126 struct ccb_pathinq cpi; 1127 struct ccb_getdev *cgd; 1128 char tmpstr[80]; 1129 caddr_t match; 1130 1131 cgd = (struct ccb_getdev *)arg; 1132 if (periph == NULL) { 1133 kprintf("%s: periph was NULL!!\n", __func__); 1134 return(CAM_REQ_CMP_ERR); 1135 } 1136 1137 if (cgd == NULL) { 1138 kprintf("%s: no getdev CCB, can't register device\n", 1139 __func__); 1140 return(CAM_REQ_CMP_ERR); 1141 } 1142 1143 softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO); 1144 LIST_INIT(&softc->pending_ccbs); 1145 softc->state = DA_STATE_PROBE; 1146 bioq_init(&softc->bio_queue_trim); 1147 bioq_init(&softc->bio_queue_rd); 1148 bioq_init(&softc->bio_queue_wr); 1149 if (SID_IS_REMOVABLE(&cgd->inq_data)) 1150 softc->flags |= DA_FLAG_PACK_REMOVABLE; 1151 if ((cgd->inq_data.flags & SID_CmdQue) != 0) 1152 softc->flags |= DA_FLAG_TAGGED_QUEUING; 1153 1154 /* Used to get TRIM status from AHCI driver */ 1155 if (cgd->inq_data.vendor_specific1[0] == 1) { 1156 /* 1157 * max number of lba ranges an SSD can handle in a single 1158 * TRIM command. vendor_specific1[1] is the num of 512-byte 1159 * blocks the SSD reports that can be passed in a TRIM cmd. 1160 */ 1161 softc->trim_max_ranges = 1162 min(cgd->inq_data.vendor_specific1[1] * 64, TRIM_MAX_RANGES); 1163 } 1164 1165 periph->softc = softc; 1166 1167 cam_extend_set(daperiphs, periph->unit_number, periph); 1168 1169 /* 1170 * See if this device has any quirks. 1171 */ 1172 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1173 (caddr_t)da_quirk_table, 1174 NELEM(da_quirk_table), 1175 sizeof(*da_quirk_table), scsi_inquiry_match); 1176 1177 if (match != NULL) 1178 softc->quirks = ((struct da_quirk_entry *)match)->quirks; 1179 else 1180 softc->quirks = DA_Q_NONE; 1181 1182 /* 1183 * Unconditionally disable the synchronize cache command for 1184 * usb attachments. It's just impossible to determine if the 1185 * device supports it or not and if it doesn't the port can 1186 * brick. 1187 */ 1188 if (strncmp(periph->sim->sim_name, "umass", 4) == 0) { 1189 softc->quirks |= DA_Q_NO_SYNC_CACHE; 1190 } 1191 1192 TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph); 1193 1194 /* Check if the SIM does not want 6 byte commands */ 1195 bzero(&cpi, sizeof(cpi)); 1196 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1); 1197 cpi.ccb_h.func_code = XPT_PATH_INQ; 1198 xpt_action((union ccb *)&cpi); 1199 if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE)) 1200 softc->quirks |= DA_Q_NO_6_BYTE; 1201 1202 /* 1203 * RBC devices don't have to support READ(6), only READ(10). 1204 */ 1205 if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC) 1206 softc->minimum_cmd_size = 10; 1207 else 1208 softc->minimum_cmd_size = 6; 1209 1210 /* 1211 * Load the user's default, if any. 1212 */ 1213 ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size", 1214 periph->unit_number); 1215 TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size); 1216 1217 /* 1218 * 6, 10, 12, and 16 are the currently permissible values. 1219 */ 1220 if (softc->minimum_cmd_size < 6) 1221 softc->minimum_cmd_size = 6; 1222 else if ((softc->minimum_cmd_size > 6) 1223 && (softc->minimum_cmd_size <= 10)) 1224 softc->minimum_cmd_size = 10; 1225 else if ((softc->minimum_cmd_size > 10) 1226 && (softc->minimum_cmd_size <= 12)) 1227 softc->minimum_cmd_size = 12; 1228 else if (softc->minimum_cmd_size > 12) 1229 softc->minimum_cmd_size = 16; 1230 1231 /* 1232 * The DA driver supports a blocksize, but 1233 * we don't know the blocksize until we do 1234 * a read capacity. So, set a flag to 1235 * indicate that the blocksize is 1236 * unavailable right now. We'll clear the 1237 * flag as soon as we've done a read capacity. 1238 */ 1239 devstat_add_entry(&softc->device_stats, "da", 1240 periph->unit_number, 0, 1241 DEVSTAT_BS_UNAVAILABLE, 1242 SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI, 1243 DEVSTAT_PRIORITY_DISK); 1244 1245 /* 1246 * Register this media as a disk 1247 */ 1248 CAM_SIM_UNLOCK(periph->sim); 1249 disk_create(periph->unit_number, &softc->disk, &da_ops); 1250 if (cpi.maxio == 0 || cpi.maxio > MAXPHYS) 1251 softc->disk.d_rawdev->si_iosize_max = MAXPHYS; 1252 else 1253 softc->disk.d_rawdev->si_iosize_max = cpi.maxio; 1254 if (bootverbose) { 1255 kprintf("%s%d: si_iosize_max:%d\n", 1256 periph->periph_name, 1257 periph->unit_number, 1258 softc->disk.d_rawdev->si_iosize_max); 1259 } 1260 CAM_SIM_LOCK(periph->sim); 1261 1262 /* 1263 * Add async callbacks for bus reset and 1264 * bus device reset calls. I don't bother 1265 * checking if this fails as, in most cases, 1266 * the system will function just fine without 1267 * them and the only alternative would be to 1268 * not attach the device on failure. 1269 */ 1270 xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE, 1271 daasync, periph, periph->path); 1272 1273 /* 1274 * Take an exclusive refcount on the periph while dastart is called 1275 * to finish the probe. The reference will be dropped in dadone at 1276 * the end of probe. 1277 */ 1278 cam_periph_hold(periph, 0); 1279 xpt_schedule(periph, /*priority*/5); 1280 1281 /* 1282 * Schedule a periodic event to occasionally send an 1283 * ordered tag to a device. 1284 */ 1285 callout_init(&softc->sendordered_c); 1286 callout_reset(&softc->sendordered_c, 1287 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL, 1288 dasendorderedtag, softc); 1289 1290 1291 1292 return(CAM_REQ_CMP); 1293 } 1294 1295 static void 1296 dastart(struct cam_periph *periph, union ccb *start_ccb) 1297 { 1298 struct da_softc *softc; 1299 1300 softc = (struct da_softc *)periph->softc; 1301 1302 switch (softc->state) { 1303 case DA_STATE_NORMAL: 1304 { 1305 /* Pull a buffer from the queue and get going on it */ 1306 struct bio *bio; 1307 struct bio *bio_rd; 1308 struct bio *bio_wr; 1309 struct buf *bp; 1310 u_int8_t tag_code; 1311 int limit; 1312 1313 /* 1314 * See if there is a buf with work for us to do.. 1315 */ 1316 bio_rd = bioq_first(&softc->bio_queue_rd); 1317 bio_wr = bioq_first(&softc->bio_queue_wr); 1318 1319 if (periph->immediate_priority <= periph->pinfo.priority) { 1320 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1321 ("queuing for immediate ccb\n")); 1322 start_ccb->ccb_h.ccb_state = DA_CCB_WAITING; 1323 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1324 periph_links.sle); 1325 periph->immediate_priority = CAM_PRIORITY_NONE; 1326 wakeup(&periph->ccb_list); 1327 if (bio_rd || bio_wr) { 1328 /* 1329 * Have more work to do, so ensure we stay 1330 * scheduled 1331 */ 1332 xpt_schedule(periph, /* XXX priority */1); 1333 } 1334 break; 1335 } 1336 1337 /* Run the trim command if not already running */ 1338 if (!softc->trim_running && 1339 (bio = bioq_first(&softc->bio_queue_trim)) != NULL) { 1340 struct trim_request *req = &softc->trim_req; 1341 struct bio *bio1; 1342 int bps = 0, ranges = 0; 1343 1344 softc->trim_running = 1; 1345 bzero(req, sizeof(*req)); 1346 bio1 = bio; 1347 while (1) { 1348 uint64_t lba; 1349 int count; 1350 1351 bp = bio1->bio_buf; 1352 count = bp->b_bcount / softc->params.secsize; 1353 lba = bio1->bio_offset/softc->params.secsize; 1354 1355 kprintf("trim lba:%llu boff:%llu count:%d\n", 1356 (unsigned long long) lba, 1357 (unsigned long long) bio1->bio_offset, 1358 count); 1359 1360 bioq_remove(&softc->bio_queue_trim, bio1); 1361 while (count > 0) { 1362 int c = min(count, 0xffff); 1363 int off = ranges * 8; 1364 1365 req->data[off + 0] = lba & 0xff; 1366 req->data[off + 1] = (lba >> 8) & 0xff; 1367 req->data[off + 2] = (lba >> 16) & 0xff; 1368 req->data[off + 3] = (lba >> 24) & 0xff; 1369 req->data[off + 4] = (lba >> 32) & 0xff; 1370 req->data[off + 5] = (lba >> 40) & 0xff; 1371 req->data[off + 6] = c & 0xff; 1372 req->data[off + 7] = (c >> 8) & 0xff; 1373 lba += c; 1374 count -= c; 1375 ranges++; 1376 } 1377 1378 /* Try to merge multiple TRIM requests */ 1379 req->bios[bps++] = bio1; 1380 bio1 = bioq_first(&softc->bio_queue_trim); 1381 if (bio1 == NULL || 1382 bio1->bio_buf->b_bcount / softc->params.secsize > 1383 (softc->trim_max_ranges - ranges) * 0xffff) 1384 break; 1385 } 1386 1387 1388 cam_fill_csio(&start_ccb->csio, 1389 1/*retries*/, 1390 dadone, 1391 CAM_DIR_OUT, 1392 MSG_SIMPLE_Q_TAG, 1393 req->data, 1394 ((ranges +63)/64)*512, 1395 SSD_FULL_SIZE, 1396 sizeof(struct scsi_rw_6), 1397 da_default_timeout*2); 1398 1399 start_ccb->ccb_h.ccb_state = DA_CCB_TRIM; 1400 LIST_INSERT_HEAD(&softc->pending_ccbs, 1401 &start_ccb->ccb_h, periph_links.le); 1402 start_ccb->csio.ccb_h.func_code = XPT_TRIM; 1403 start_ccb->ccb_h.ccb_bio = bio; 1404 devstat_start_transaction(&softc->device_stats); 1405 xpt_action(start_ccb); 1406 xpt_schedule(periph, 1); 1407 break; 1408 } 1409 1410 /* 1411 * Select a read or write buffer to queue. Limit the number 1412 * of tags dedicated to reading or writing, giving reads 1413 * precedence. 1414 * 1415 * Writes to modern hard drives go into the HDs cache and 1416 * return completion nearly instantly. That is until the 1417 * cache becomes full. When the HDs cache becomes full 1418 * write commands will begin to stall. If all available 1419 * tags are taken up by writes which saturate the drive 1420 * reads will become tag-starved. 1421 * 1422 * A similar situation can occur with reads. With many 1423 * parallel readers all tags can be taken up by reads 1424 * and prevent any writes from draining, even if the HD's 1425 * cache is not full. 1426 */ 1427 limit = periph->sim->max_tagged_dev_openings * 2 / 3 + 1; 1428 #if 0 1429 /* DEBUGGING */ 1430 static int savets; 1431 static long savets2; 1432 if (1 || time_second != savets2 || (ticks != savets && (softc->outstanding_cmds_rd || softc->outstanding_cmds_wr))) { 1433 kprintf("%d %d (%d)\n", 1434 softc->outstanding_cmds_rd, 1435 softc->outstanding_cmds_wr, 1436 limit); 1437 savets = ticks; 1438 savets2 = time_second; 1439 } 1440 #endif 1441 if (bio_rd && softc->outstanding_cmds_rd < limit) { 1442 bio = bio_rd; 1443 bioq_remove(&softc->bio_queue_rd, bio); 1444 } else if (bio_wr && softc->outstanding_cmds_wr < limit) { 1445 bio = bio_wr; 1446 bioq_remove(&softc->bio_queue_wr, bio); 1447 } else { 1448 if (bio_rd) 1449 softc->flags |= DA_FLAG_RD_LIMIT; 1450 if (bio_wr) 1451 softc->flags |= DA_FLAG_WR_LIMIT; 1452 xpt_release_ccb(start_ccb); 1453 break; 1454 } 1455 1456 /* 1457 * We can queue new work. 1458 */ 1459 bp = bio->bio_buf; 1460 1461 devstat_start_transaction(&softc->device_stats); 1462 1463 if ((bp->b_flags & B_ORDERED) != 0 || 1464 (softc->flags & DA_FLAG_NEED_OTAG) != 0) { 1465 softc->flags &= ~DA_FLAG_NEED_OTAG; 1466 softc->ordered_tag_count++; 1467 tag_code = MSG_ORDERED_Q_TAG; 1468 } else { 1469 tag_code = MSG_SIMPLE_Q_TAG; 1470 } 1471 1472 switch(bp->b_cmd) { 1473 case BUF_CMD_READ: 1474 case BUF_CMD_WRITE: 1475 /* 1476 * Block read/write op 1477 */ 1478 KKASSERT(bio->bio_offset % softc->params.secsize == 0); 1479 1480 scsi_read_write( 1481 &start_ccb->csio, 1482 da_retry_count, /* retries */ 1483 dadone, 1484 tag_code, 1485 (bp->b_cmd == BUF_CMD_READ), 1486 0, /* byte2 */ 1487 softc->minimum_cmd_size, 1488 bio->bio_offset / softc->params.secsize, 1489 bp->b_bcount / softc->params.secsize, 1490 bp->b_data, 1491 bp->b_bcount, 1492 SSD_FULL_SIZE, /* sense_len */ 1493 da_default_timeout * 1000 1494 ); 1495 break; 1496 case BUF_CMD_FLUSH: 1497 /* 1498 * Silently complete a flush request if the device 1499 * cannot handle it. 1500 */ 1501 if (softc->quirks & DA_Q_NO_SYNC_CACHE) { 1502 xpt_release_ccb(start_ccb); 1503 start_ccb = NULL; 1504 devstat_end_transaction_buf( 1505 &softc->device_stats, bp); 1506 biodone(bio); 1507 } else { 1508 scsi_synchronize_cache( 1509 &start_ccb->csio, 1510 1, /* retries */ 1511 dadone, /* cbfcnp */ 1512 MSG_SIMPLE_Q_TAG, 1513 0, /* lba */ 1514 0, /* count (whole disk) */ 1515 SSD_FULL_SIZE, 1516 da_default_timeout*1000 /* timeout */ 1517 ); 1518 } 1519 break; 1520 case BUF_CMD_FREEBLKS: 1521 if (softc->disk.d_info.d_trimflag & DA_FLAG_CAN_TRIM){ 1522 start_ccb->csio.ccb_h.func_code = XPT_TRIM; 1523 break; 1524 } 1525 default: 1526 xpt_release_ccb(start_ccb); 1527 start_ccb = NULL; 1528 panic("dastart: unrecognized bio cmd %d", bp->b_cmd); 1529 break; /* NOT REACHED */ 1530 } 1531 1532 /* 1533 * Block out any asyncronous callbacks 1534 * while we touch the pending ccb list. 1535 */ 1536 if (start_ccb) { 1537 start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO; 1538 LIST_INSERT_HEAD(&softc->pending_ccbs, 1539 &start_ccb->ccb_h, periph_links.le); 1540 if (bp->b_cmd == BUF_CMD_WRITE || 1541 bp->b_cmd == BUF_CMD_FLUSH) { 1542 ++softc->outstanding_cmds_wr; 1543 } else { 1544 ++softc->outstanding_cmds_rd; 1545 } 1546 1547 /* We expect a unit attention from this device */ 1548 if ((softc->flags & DA_FLAG_RETRY_UA) != 0) { 1549 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA; 1550 softc->flags &= ~DA_FLAG_RETRY_UA; 1551 } 1552 1553 start_ccb->ccb_h.ccb_bio = bio; 1554 xpt_action(start_ccb); 1555 } 1556 1557 /* 1558 * Be sure we stay scheduled if we have more work to do. 1559 */ 1560 if (bioq_first(&softc->bio_queue_rd) || 1561 bioq_first(&softc->bio_queue_wr)) { 1562 xpt_schedule(periph, 1); 1563 } 1564 break; 1565 } 1566 case DA_STATE_PROBE: 1567 { 1568 struct ccb_scsiio *csio; 1569 struct scsi_read_capacity_data *rcap; 1570 1571 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO); 1572 csio = &start_ccb->csio; 1573 scsi_read_capacity(csio, 1574 /*retries*/4, 1575 dadone, 1576 MSG_SIMPLE_Q_TAG, 1577 rcap, 1578 SSD_FULL_SIZE, 1579 /*timeout*/5000); 1580 start_ccb->ccb_h.ccb_bio = NULL; 1581 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE; 1582 xpt_action(start_ccb); 1583 break; 1584 } 1585 case DA_STATE_PROBE2: 1586 { 1587 struct ccb_scsiio *csio; 1588 struct scsi_read_capacity_data_16 *rcaplong; 1589 1590 rcaplong = kmalloc(sizeof(*rcaplong), M_SCSIDA, 1591 M_INTWAIT | M_ZERO); 1592 csio = &start_ccb->csio; 1593 scsi_read_capacity_16(csio, 1594 /*retries*/ 4, 1595 /*cbfcnp*/ dadone, 1596 /*tag_action*/ MSG_SIMPLE_Q_TAG, 1597 /*lba*/ 0, 1598 /*reladr*/ 0, 1599 /*pmi*/ 0, 1600 rcaplong, 1601 /*sense_len*/ SSD_FULL_SIZE, 1602 /*timeout*/ 60000); 1603 start_ccb->ccb_h.ccb_bio = NULL; 1604 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2; 1605 xpt_action(start_ccb); 1606 break; 1607 } 1608 } 1609 } 1610 1611 static int 1612 cmd6workaround(union ccb *ccb) 1613 { 1614 struct scsi_rw_6 cmd6; 1615 struct scsi_rw_10 *cmd10; 1616 struct da_softc *softc; 1617 u_int8_t *cdb; 1618 int frozen; 1619 1620 cdb = ccb->csio.cdb_io.cdb_bytes; 1621 1622 /* Translation only possible if CDB is an array and cmd is R/W6 */ 1623 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 || 1624 (*cdb != READ_6 && *cdb != WRITE_6)) 1625 return 0; 1626 1627 xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, " 1628 "increasing minimum_cmd_size to 10.\n"); 1629 softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc; 1630 softc->minimum_cmd_size = 10; 1631 1632 bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6)); 1633 cmd10 = (struct scsi_rw_10 *)cdb; 1634 cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10; 1635 cmd10->byte2 = 0; 1636 scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr); 1637 cmd10->reserved = 0; 1638 scsi_ulto2b(cmd6.length, cmd10->length); 1639 cmd10->control = cmd6.control; 1640 ccb->csio.cdb_len = sizeof(*cmd10); 1641 1642 /* Requeue request, unfreezing queue if necessary */ 1643 frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0; 1644 ccb->ccb_h.status = CAM_REQUEUE_REQ; 1645 xpt_action(ccb); 1646 if (frozen) { 1647 cam_release_devq(ccb->ccb_h.path, 1648 /*relsim_flags*/0, 1649 /*reduction*/0, 1650 /*timeout*/0, 1651 /*getcount_only*/0); 1652 } 1653 return (ERESTART); 1654 } 1655 1656 static void 1657 dadone(struct cam_periph *periph, union ccb *done_ccb) 1658 { 1659 struct da_softc *softc; 1660 struct ccb_scsiio *csio; 1661 struct disk_info info; 1662 1663 softc = (struct da_softc *)periph->softc; 1664 csio = &done_ccb->csio; 1665 switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) { 1666 case DA_CCB_BUFFER_IO: 1667 case DA_CCB_TRIM: 1668 { 1669 struct buf *bp; 1670 struct bio *bio; 1671 int mustsched = 0; 1672 1673 bio = (struct bio *)done_ccb->ccb_h.ccb_bio; 1674 bp = bio->bio_buf; 1675 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1676 int error; 1677 int sf; 1678 1679 if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0) 1680 sf = SF_RETRY_UA; 1681 else 1682 sf = 0; 1683 1684 error = daerror(done_ccb, CAM_RETRY_SELTO, sf); 1685 if (error == ERESTART) { 1686 /* 1687 * A retry was scheuled, so 1688 * just return. 1689 */ 1690 return; 1691 } 1692 if (error != 0) { 1693 if (error == ENXIO) { 1694 /* 1695 * Catastrophic error. Mark our pack as 1696 * invalid. 1697 */ 1698 /* 1699 * XXX See if this is really a media 1700 * XXX change first? 1701 */ 1702 xpt_print(periph->path, 1703 "Invalidating pack\n"); 1704 softc->flags |= DA_FLAG_PACK_INVALID; 1705 } 1706 1707 /* 1708 * Return all queued write I/O's with EIO 1709 * so the client can retry these I/Os in the 1710 * proper order should it attempt to recover. 1711 * 1712 * Leave read I/O's alone. 1713 */ 1714 daflushbioq(&softc->bio_queue_wr, EIO); 1715 bp->b_error = error; 1716 bp->b_resid = bp->b_bcount; 1717 bp->b_flags |= B_ERROR; 1718 } else { 1719 bp->b_resid = csio->resid; 1720 bp->b_error = 0; 1721 if (bp->b_resid != 0) 1722 bp->b_flags |= B_ERROR; 1723 } 1724 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1725 cam_release_devq(done_ccb->ccb_h.path, 1726 /*relsim_flags*/0, 1727 /*reduction*/0, 1728 /*timeout*/0, 1729 /*getcount_only*/0); 1730 } else { 1731 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1732 panic("REQ_CMP with QFRZN"); 1733 bp->b_resid = csio->resid; 1734 if (csio->resid > 0) 1735 bp->b_flags |= B_ERROR; 1736 } 1737 1738 /* 1739 * Block out any asyncronous callbacks 1740 * while we touch the pending ccb list. 1741 */ 1742 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le); 1743 if (bp->b_cmd == BUF_CMD_WRITE || bp->b_cmd == BUF_CMD_FLUSH) { 1744 --softc->outstanding_cmds_wr; 1745 if (softc->flags & DA_FLAG_WR_LIMIT) { 1746 softc->flags &= ~DA_FLAG_WR_LIMIT; 1747 mustsched = 1; 1748 } 1749 } else { 1750 --softc->outstanding_cmds_rd; 1751 if (softc->flags & DA_FLAG_RD_LIMIT) { 1752 softc->flags &= ~DA_FLAG_RD_LIMIT; 1753 mustsched = 1; 1754 } 1755 } 1756 if (softc->outstanding_cmds_rd + 1757 softc->outstanding_cmds_wr == 0) { 1758 softc->flags |= DA_FLAG_WENT_IDLE; 1759 } 1760 1761 devstat_end_transaction_buf(&softc->device_stats, bp); 1762 if ((csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) == 1763 DA_CCB_TRIM) { 1764 struct trim_request *req = 1765 (struct trim_request *) csio->data_ptr; 1766 int i; 1767 1768 for (i = 1; i < softc->trim_max_ranges && 1769 req->bios[i]; i++) { 1770 struct bio *bp1 = req->bios[i]; 1771 1772 bp1->bio_buf->b_resid = bp->b_resid; 1773 bp1->bio_buf->b_error = bp->b_error; 1774 if (bp->b_flags & B_ERROR) 1775 bp1->bio_buf->b_flags |= B_ERROR; 1776 biodone(bp1); 1777 } 1778 softc->trim_running = 0; 1779 biodone(bio); 1780 xpt_schedule(periph,1); 1781 } else 1782 biodone(bio); 1783 1784 1785 if (mustsched) 1786 xpt_schedule(periph, /*priority*/1); 1787 1788 break; 1789 } 1790 case DA_CCB_PROBE: 1791 case DA_CCB_PROBE2: 1792 { 1793 struct scsi_read_capacity_data *rdcap; 1794 struct scsi_read_capacity_data_16 *rcaplong; 1795 char announce_buf[80]; 1796 1797 rdcap = NULL; 1798 rcaplong = NULL; 1799 if (softc->state == DA_STATE_PROBE) 1800 rdcap =(struct scsi_read_capacity_data *)csio->data_ptr; 1801 else 1802 rcaplong = (struct scsi_read_capacity_data_16 *) 1803 csio->data_ptr; 1804 1805 bzero(&info, sizeof(info)); 1806 info.d_type = DTYPE_SCSI; 1807 info.d_serialno = xpt_path_serialno(periph->path); 1808 1809 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 1810 struct disk_params *dp; 1811 uint32_t block_size; 1812 uint64_t maxsector; 1813 1814 if (softc->state == DA_STATE_PROBE) { 1815 block_size = scsi_4btoul(rdcap->length); 1816 maxsector = scsi_4btoul(rdcap->addr); 1817 1818 /* 1819 * According to SBC-2, if the standard 10 1820 * byte READ CAPACITY command returns 2^32, 1821 * we should issue the 16 byte version of 1822 * the command, since the device in question 1823 * has more sectors than can be represented 1824 * with the short version of the command. 1825 */ 1826 if (maxsector == 0xffffffff) { 1827 softc->state = DA_STATE_PROBE2; 1828 kfree(rdcap, M_SCSIDA); 1829 xpt_release_ccb(done_ccb); 1830 xpt_schedule(periph, /*priority*/5); 1831 return; 1832 } 1833 } else { 1834 block_size = scsi_4btoul(rcaplong->length); 1835 maxsector = scsi_8btou64(rcaplong->addr); 1836 } 1837 dasetgeom(periph, block_size, maxsector); 1838 dp = &softc->params; 1839 ksnprintf(announce_buf, sizeof(announce_buf), 1840 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)", 1841 (uintmax_t) (((uintmax_t)dp->secsize * 1842 dp->sectors) / (1024*1024)), 1843 (uintmax_t)dp->sectors, 1844 dp->secsize, dp->heads, dp->secs_per_track, 1845 dp->cylinders); 1846 1847 CAM_SIM_UNLOCK(periph->sim); 1848 info.d_media_blksize = softc->params.secsize; 1849 info.d_media_blocks = softc->params.sectors; 1850 info.d_media_size = 0; 1851 info.d_secpertrack = softc->params.secs_per_track; 1852 info.d_nheads = softc->params.heads; 1853 info.d_ncylinders = softc->params.cylinders; 1854 info.d_secpercyl = softc->params.heads * 1855 softc->params.secs_per_track; 1856 info.d_serialno = xpt_path_serialno(periph->path); 1857 disk_setdiskinfo(&softc->disk, &info); 1858 CAM_SIM_LOCK(periph->sim); 1859 } else { 1860 int error; 1861 1862 announce_buf[0] = '\0'; 1863 1864 /* 1865 * Retry any UNIT ATTENTION type errors. They 1866 * are expected at boot. 1867 */ 1868 error = daerror(done_ccb, CAM_RETRY_SELTO, 1869 SF_RETRY_UA|SF_NO_PRINT); 1870 if (error == ERESTART) { 1871 /* 1872 * A retry was scheuled, so 1873 * just return. 1874 */ 1875 return; 1876 } else if (error != 0) { 1877 struct scsi_sense_data *sense; 1878 int asc, ascq; 1879 int sense_key, error_code; 1880 int have_sense; 1881 cam_status status; 1882 struct ccb_getdev cgd; 1883 1884 /* Don't wedge this device's queue */ 1885 status = done_ccb->ccb_h.status; 1886 if ((status & CAM_DEV_QFRZN) != 0) 1887 cam_release_devq(done_ccb->ccb_h.path, 1888 /*relsim_flags*/0, 1889 /*reduction*/0, 1890 /*timeout*/0, 1891 /*getcount_only*/0); 1892 1893 1894 xpt_setup_ccb(&cgd.ccb_h, 1895 done_ccb->ccb_h.path, 1896 /* priority */ 1); 1897 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 1898 xpt_action((union ccb *)&cgd); 1899 1900 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0) 1901 || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0) 1902 || ((status & CAM_AUTOSNS_VALID) == 0)) 1903 have_sense = FALSE; 1904 else 1905 have_sense = TRUE; 1906 1907 if (have_sense) { 1908 sense = &csio->sense_data; 1909 scsi_extract_sense(sense, &error_code, 1910 &sense_key, 1911 &asc, &ascq); 1912 } 1913 /* 1914 * Attach to anything that claims to be a 1915 * direct access or optical disk device, 1916 * as long as it doesn't return a "Logical 1917 * unit not supported" (0x25) error. 1918 */ 1919 if ((have_sense) && (asc != 0x25) 1920 && (error_code == SSD_CURRENT_ERROR)) { 1921 const char *sense_key_desc; 1922 const char *asc_desc; 1923 1924 scsi_sense_desc(sense_key, asc, ascq, 1925 &cgd.inq_data, 1926 &sense_key_desc, 1927 &asc_desc); 1928 ksnprintf(announce_buf, 1929 sizeof(announce_buf), 1930 "Attempt to query device " 1931 "size failed: %s, %s", 1932 sense_key_desc, 1933 asc_desc); 1934 info.d_media_blksize = 512; 1935 disk_setdiskinfo(&softc->disk, &info); 1936 } else { 1937 if (have_sense) 1938 scsi_sense_print( 1939 &done_ccb->csio); 1940 else { 1941 xpt_print(periph->path, 1942 "got CAM status %#x\n", 1943 done_ccb->ccb_h.status); 1944 } 1945 1946 xpt_print(periph->path, "fatal error, " 1947 "failed to attach to device\n"); 1948 1949 /* 1950 * Free up resources. 1951 */ 1952 cam_periph_invalidate(periph); 1953 } 1954 } 1955 } 1956 kfree(csio->data_ptr, M_SCSIDA); 1957 if (announce_buf[0] != '\0') { 1958 xpt_announce_periph(periph, announce_buf); 1959 /* 1960 * Create our sysctl variables, now that we know 1961 * we have successfully attached. 1962 */ 1963 taskqueue_enqueue(taskqueue_thread[mycpuid], 1964 &softc->sysctl_task); 1965 } 1966 1967 if (softc->trim_max_ranges) { 1968 softc->disk.d_info.d_trimflag |= DA_FLAG_CAN_TRIM; 1969 kprintf("%s%d: supports TRIM\n", 1970 periph->periph_name, 1971 periph->unit_number); 1972 } 1973 softc->state = DA_STATE_NORMAL; 1974 /* 1975 * Since our peripheral may be invalidated by an error 1976 * above or an external event, we must release our CCB 1977 * before releasing the probe lock on the peripheral. 1978 * The peripheral will only go away once the last lock 1979 * is removed, and we need it around for the CCB release 1980 * operation. 1981 */ 1982 xpt_release_ccb(done_ccb); 1983 cam_periph_unhold(periph, 0); 1984 return; 1985 } 1986 case DA_CCB_WAITING: 1987 { 1988 /* Caller will release the CCB */ 1989 wakeup(&done_ccb->ccb_h.cbfcnp); 1990 return; 1991 } 1992 case DA_CCB_DUMP: 1993 /* No-op. We're polling */ 1994 return; 1995 default: 1996 break; 1997 } 1998 xpt_release_ccb(done_ccb); 1999 } 2000 2001 static int 2002 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 2003 { 2004 struct da_softc *softc; 2005 struct cam_periph *periph; 2006 int error; 2007 2008 periph = xpt_path_periph(ccb->ccb_h.path); 2009 softc = (struct da_softc *)periph->softc; 2010 2011 /* 2012 * Automatically detect devices that do not support 2013 * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs. 2014 */ 2015 error = 0; 2016 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) { 2017 error = cmd6workaround(ccb); 2018 } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) == 2019 CAM_SCSI_STATUS_ERROR) 2020 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID) 2021 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) 2022 && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0) 2023 && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) { 2024 int sense_key, error_code, asc, ascq; 2025 2026 scsi_extract_sense(&ccb->csio.sense_data, 2027 &error_code, &sense_key, &asc, &ascq); 2028 if (sense_key == SSD_KEY_ILLEGAL_REQUEST) 2029 error = cmd6workaround(ccb); 2030 } 2031 if (error == ERESTART) 2032 return (ERESTART); 2033 2034 /* 2035 * XXX 2036 * Until we have a better way of doing pack validation, 2037 * don't treat UAs as errors. 2038 */ 2039 sense_flags |= SF_RETRY_UA; 2040 return(cam_periph_error(ccb, cam_flags, sense_flags, 2041 &softc->saved_ccb)); 2042 } 2043 2044 static void 2045 daprevent(struct cam_periph *periph, int action) 2046 { 2047 struct da_softc *softc; 2048 union ccb *ccb; 2049 int error; 2050 2051 softc = (struct da_softc *)periph->softc; 2052 2053 if (((action == PR_ALLOW) 2054 && (softc->flags & DA_FLAG_PACK_LOCKED) == 0) 2055 || ((action == PR_PREVENT) 2056 && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) { 2057 return; 2058 } 2059 2060 ccb = cam_periph_getccb(periph, /*priority*/1); 2061 2062 scsi_prevent(&ccb->csio, 2063 /*retries*/1, 2064 /*cbcfp*/dadone, 2065 MSG_SIMPLE_Q_TAG, 2066 action, 2067 SSD_FULL_SIZE, 2068 5000); 2069 2070 error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO, 2071 SF_RETRY_UA, &softc->device_stats); 2072 2073 if (error == 0) { 2074 if (action == PR_ALLOW) 2075 softc->flags &= ~DA_FLAG_PACK_LOCKED; 2076 else 2077 softc->flags |= DA_FLAG_PACK_LOCKED; 2078 } 2079 2080 xpt_release_ccb(ccb); 2081 } 2082 2083 /* 2084 * Check media on open, e.g. card reader devices which had no initial media. 2085 */ 2086 static int 2087 dacheckmedia(struct cam_periph *periph) 2088 { 2089 struct disk_params *dp; 2090 struct da_softc *softc; 2091 struct disk_info info; 2092 int error; 2093 2094 softc = (struct da_softc *)periph->softc; 2095 dp = &softc->params; 2096 2097 error = dagetcapacity(periph); 2098 2099 /* 2100 * Only reprobe on initial open and if the media is removable. 2101 * 2102 * NOTE: If we setdiskinfo() it will take the device probe 2103 * a bit of time to probe the slices and partitions, 2104 * and mess up booting. So avoid if nothing has changed. 2105 * XXX 2106 */ 2107 if (softc->flags & DA_FLAG_OPEN) 2108 return (error); 2109 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) == 0) 2110 return (error); 2111 2112 bzero(&info, sizeof(info)); 2113 info.d_type = DTYPE_SCSI; 2114 info.d_serialno = xpt_path_serialno(periph->path); 2115 2116 if (error == 0) { 2117 CAM_SIM_UNLOCK(periph->sim); 2118 info.d_media_blksize = softc->params.secsize; 2119 info.d_media_blocks = softc->params.sectors; 2120 info.d_media_size = 0; 2121 info.d_secpertrack = softc->params.secs_per_track; 2122 info.d_nheads = softc->params.heads; 2123 info.d_ncylinders = softc->params.cylinders; 2124 info.d_secpercyl = softc->params.heads * 2125 softc->params.secs_per_track; 2126 info.d_serialno = xpt_path_serialno(periph->path); 2127 if (info.d_media_blocks != softc->disk.d_info.d_media_blocks) { 2128 kprintf("%s%d: open removable media: " 2129 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)\n", 2130 periph->periph_name, periph->unit_number, 2131 (uintmax_t)(((uintmax_t)dp->secsize * 2132 dp->sectors) / (1024*1024)), 2133 (uintmax_t)dp->sectors, dp->secsize, 2134 dp->heads, dp->secs_per_track, dp->cylinders); 2135 disk_setdiskinfo(&softc->disk, &info); 2136 } 2137 CAM_SIM_LOCK(periph->sim); 2138 } else { 2139 kprintf("%s%d: open removable media: no media present\n", 2140 periph->periph_name, periph->unit_number); 2141 info.d_media_blksize = 512; 2142 disk_setdiskinfo(&softc->disk, &info); 2143 } 2144 return (error); 2145 } 2146 2147 static int 2148 dagetcapacity(struct cam_periph *periph) 2149 { 2150 struct da_softc *softc; 2151 union ccb *ccb; 2152 struct scsi_read_capacity_data *rcap; 2153 struct scsi_read_capacity_data_16 *rcaplong; 2154 uint32_t block_len; 2155 uint64_t maxsector; 2156 int error; 2157 2158 softc = (struct da_softc *)periph->softc; 2159 block_len = 0; 2160 maxsector = 0; 2161 error = 0; 2162 2163 /* Do a read capacity */ 2164 rcap = (struct scsi_read_capacity_data *)kmalloc(sizeof(*rcaplong), 2165 M_SCSIDA, M_INTWAIT); 2166 2167 ccb = cam_periph_getccb(periph, /*priority*/1); 2168 scsi_read_capacity(&ccb->csio, 2169 /*retries*/4, 2170 /*cbfncp*/dadone, 2171 MSG_SIMPLE_Q_TAG, 2172 rcap, 2173 SSD_FULL_SIZE, 2174 /*timeout*/60000); 2175 ccb->ccb_h.ccb_bio = NULL; 2176 2177 error = cam_periph_runccb(ccb, daerror, 2178 /*cam_flags*/CAM_RETRY_SELTO, 2179 /*sense_flags*/SF_RETRY_UA, 2180 &softc->device_stats); 2181 2182 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2183 cam_release_devq(ccb->ccb_h.path, 2184 /*relsim_flags*/0, 2185 /*reduction*/0, 2186 /*timeout*/0, 2187 /*getcount_only*/0); 2188 2189 if (error == 0) { 2190 block_len = scsi_4btoul(rcap->length); 2191 maxsector = scsi_4btoul(rcap->addr); 2192 2193 if (maxsector != 0xffffffff) 2194 goto done; 2195 } else 2196 goto done; 2197 2198 rcaplong = (struct scsi_read_capacity_data_16 *)rcap; 2199 2200 scsi_read_capacity_16(&ccb->csio, 2201 /*retries*/ 4, 2202 /*cbfcnp*/ dadone, 2203 /*tag_action*/ MSG_SIMPLE_Q_TAG, 2204 /*lba*/ 0, 2205 /*reladr*/ 0, 2206 /*pmi*/ 0, 2207 rcaplong, 2208 /*sense_len*/ SSD_FULL_SIZE, 2209 /*timeout*/ 60000); 2210 ccb->ccb_h.ccb_bio = NULL; 2211 2212 error = cam_periph_runccb(ccb, daerror, 2213 /*cam_flags*/CAM_RETRY_SELTO, 2214 /*sense_flags*/SF_RETRY_UA, 2215 &softc->device_stats); 2216 2217 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2218 cam_release_devq(ccb->ccb_h.path, 2219 /*relsim_flags*/0, 2220 /*reduction*/0, 2221 /*timeout*/0, 2222 /*getcount_only*/0); 2223 2224 if (error == 0) { 2225 block_len = scsi_4btoul(rcaplong->length); 2226 maxsector = scsi_8btou64(rcaplong->addr); 2227 } 2228 2229 done: 2230 2231 if (error == 0) 2232 dasetgeom(periph, block_len, maxsector); 2233 2234 xpt_release_ccb(ccb); 2235 2236 kfree(rcap, M_SCSIDA); 2237 2238 return (error); 2239 } 2240 2241 static void 2242 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector) 2243 { 2244 struct ccb_calc_geometry ccg; 2245 struct da_softc *softc; 2246 struct disk_params *dp; 2247 2248 softc = (struct da_softc *)periph->softc; 2249 2250 dp = &softc->params; 2251 dp->secsize = block_len; 2252 dp->sectors = maxsector + 1; 2253 /* 2254 * Have the controller provide us with a geometry 2255 * for this disk. The only time the geometry 2256 * matters is when we boot and the controller 2257 * is the only one knowledgeable enough to come 2258 * up with something that will make this a bootable 2259 * device. 2260 */ 2261 xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1); 2262 ccg.ccb_h.func_code = XPT_CALC_GEOMETRY; 2263 ccg.block_size = dp->secsize; 2264 ccg.volume_size = dp->sectors; 2265 ccg.heads = 0; 2266 ccg.secs_per_track = 0; 2267 ccg.cylinders = 0; 2268 xpt_action((union ccb*)&ccg); 2269 if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 2270 /* 2271 * We don't know what went wrong here- but just pick 2272 * a geometry so we don't have nasty things like divide 2273 * by zero. 2274 */ 2275 dp->heads = 255; 2276 dp->secs_per_track = 255; 2277 dp->cylinders = dp->sectors / (255 * 255); 2278 if (dp->cylinders == 0) { 2279 dp->cylinders = 1; 2280 } 2281 } else { 2282 dp->heads = ccg.heads; 2283 dp->secs_per_track = ccg.secs_per_track; 2284 dp->cylinders = ccg.cylinders; 2285 } 2286 } 2287 2288 static void 2289 dasendorderedtag(void *arg) 2290 { 2291 struct da_softc *softc = arg; 2292 2293 if (da_send_ordered) { 2294 if ((softc->ordered_tag_count == 0) 2295 && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) { 2296 softc->flags |= DA_FLAG_NEED_OTAG; 2297 } 2298 if (softc->outstanding_cmds_rd || softc->outstanding_cmds_wr) 2299 softc->flags &= ~DA_FLAG_WENT_IDLE; 2300 2301 softc->ordered_tag_count = 0; 2302 } 2303 /* Queue us up again */ 2304 callout_reset(&softc->sendordered_c, 2305 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL, 2306 dasendorderedtag, softc); 2307 } 2308 2309 /* 2310 * Step through all DA peripheral drivers, and if the device is still open, 2311 * sync the disk cache to physical media. 2312 */ 2313 static void 2314 dashutdown(void * arg, int howto) 2315 { 2316 struct cam_periph *periph; 2317 struct da_softc *softc; 2318 2319 TAILQ_FOREACH(periph, &dadriver.units, unit_links) { 2320 union ccb ccb; 2321 2322 cam_periph_lock(periph); 2323 softc = (struct da_softc *)periph->softc; 2324 2325 /* 2326 * We only sync the cache if the drive is still open, and 2327 * if the drive is capable of it.. 2328 */ 2329 if (((softc->flags & DA_FLAG_OPEN) == 0) 2330 || (softc->quirks & DA_Q_NO_SYNC_CACHE)) { 2331 cam_periph_unlock(periph); 2332 continue; 2333 } 2334 2335 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1); 2336 2337 ccb.ccb_h.ccb_state = DA_CCB_DUMP; 2338 scsi_synchronize_cache(&ccb.csio, 2339 /*retries*/1, 2340 /*cbfcnp*/dadone, 2341 MSG_SIMPLE_Q_TAG, 2342 /*begin_lba*/0, /* whole disk */ 2343 /*lb_count*/0, 2344 SSD_FULL_SIZE, 2345 60 * 60 * 1000); 2346 2347 xpt_polled_action(&ccb); 2348 2349 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 2350 if (((ccb.ccb_h.status & CAM_STATUS_MASK) == 2351 CAM_SCSI_STATUS_ERROR) 2352 && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){ 2353 int error_code, sense_key, asc, ascq; 2354 2355 scsi_extract_sense(&ccb.csio.sense_data, 2356 &error_code, &sense_key, 2357 &asc, &ascq); 2358 2359 if (sense_key != SSD_KEY_ILLEGAL_REQUEST) 2360 scsi_sense_print(&ccb.csio); 2361 } else { 2362 xpt_print(periph->path, "Synchronize " 2363 "cache failed, status == 0x%x, scsi status " 2364 "== 0x%x\n", ccb.ccb_h.status, 2365 ccb.csio.scsi_status); 2366 } 2367 } 2368 2369 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0) 2370 cam_release_devq(ccb.ccb_h.path, 2371 /*relsim_flags*/0, 2372 /*reduction*/0, 2373 /*timeout*/0, 2374 /*getcount_only*/0); 2375 2376 cam_periph_unlock(periph); 2377 } 2378 } 2379 2380 #else /* !_KERNEL */ 2381 2382 /* 2383 * XXX This is only left out of the kernel build to silence warnings. If, 2384 * for some reason this function is used in the kernel, the ifdefs should 2385 * be moved so it is included both in the kernel and userland. 2386 */ 2387 void 2388 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries, 2389 void (*cbfcnp)(struct cam_periph *, union ccb *), 2390 u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave, 2391 u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len, 2392 u_int32_t timeout) 2393 { 2394 struct scsi_format_unit *scsi_cmd; 2395 2396 scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes; 2397 scsi_cmd->opcode = FORMAT_UNIT; 2398 scsi_cmd->byte2 = byte2; 2399 scsi_ulto2b(ileave, scsi_cmd->interleave); 2400 2401 cam_fill_csio(csio, 2402 retries, 2403 cbfcnp, 2404 /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 2405 tag_action, 2406 data_ptr, 2407 dxfer_len, 2408 sense_len, 2409 sizeof(*scsi_cmd), 2410 timeout); 2411 } 2412 2413 #endif /* _KERNEL */ 2414