sys/bus/cam/scsi/scsi_cd.c

   1 /*
   2  * Copyright (c) 1997 Justin T. Gibbs.
   3  * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2003, 2003 Kenneth D. Merry.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions, and the following disclaimer,
  11  *    without modification, immediately at the beginning of the file.
  12  * 2. The name of the author may not be used to endorse or promote products
  13  *    derived from this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  19  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/cam/scsi/scsi_cd.c,v 1.31.2.16 2003/10/21 22:26:11 thomas Exp $
  28  * $DragonFly: src/sys/bus/cam/scsi/scsi_cd.c,v 1.44 2008/07/18 00:07:23 dillon Exp $
  29  */
  30 /*
  31  * Portions of this driver taken from the original FreeBSD cd driver.
  32  * Written by Julian Elischer (julian@tfs.com)
  33  * for TRW Financial Systems for use under the MACH(2.5) operating system.
  34  *
  35  * TRW Financial Systems, in accordance with their agreement with Carnegie
  36  * Mellon University, makes this software available to CMU to distribute
  37  * or use in any manner that they see fit as long as this message is kept with
  38  * the software. For this reason TFS also grants any other persons or
  39  * organisations permission to use or modify this software.
  40  *
  41  * TFS supplies this software to be publicly redistributed
  42  * on the understanding that TFS is not responsible for the correct
  43  * functioning of this software in any circumstances.
  44  *
  45  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
  46  *
  47  *      from: cd.c,v 1.83 1997/05/04 15:24:22 joerg Exp $
  48  */
  49
  50 #include "opt_cd.h"
  51
  52 #include <sys/param.h>
  53 #include <sys/bootmaj.h>
  54 #include <sys/systm.h>
  55 #include <sys/kernel.h>
  56 #include <sys/buf.h>
  57 #include <sys/conf.h>
  58 #include <sys/disk.h>
  59 #include <sys/dtype.h>
  60 #include <sys/malloc.h>
  61 #include <sys/cdio.h>
  62 #include <sys/cdrio.h>
  63 #include <sys/dvdio.h>
  64 #include <sys/devicestat.h>
  65 #include <sys/sysctl.h>
  66 #include <sys/taskqueue.h>
  67 #include <sys/proc.h>
  68 #include <sys/camlib.h>
  69 #include <sys/udev.h>
  70
  71 #include <sys/buf2.h>
  72 #include <sys/thread2.h>
  73 #include <sys/mplock2.h>
  74
  75 #include "../cam.h"
  76 #include "../cam_ccb.h"
  77 #include "../cam_extend.h"
  78 #include "../cam_periph.h"
  79 #include "../cam_xpt_periph.h"
  80 #include "../cam_queue.h"
  81 #include "../cam_sim.h"
  82
  83 #include "scsi_message.h"
  84 #include "scsi_da.h"
  85 #include "scsi_cd.h"
  86
  87 #define LEADOUT         0xaa            /* leadout toc entry */
  88
  89 struct cd_params {
  90         u_int32_t blksize;
  91         u_long    disksize;
  92 };
  93
  94 typedef enum {
  95         CD_Q_NONE               = 0x00,
  96         CD_Q_NO_TOUCH           = 0x01,
  97         CD_Q_BCD_TRACKS         = 0x02,
  98         CD_Q_NO_CHANGER         = 0x04,
  99         CD_Q_CHANGER            = 0x08,
 100         CD_Q_10_BYTE_ONLY       = 0x10
 101 } cd_quirks;
 102
 103 typedef enum {
 104         CD_FLAG_INVALID         = 0x0001,
 105         CD_FLAG_NEW_DISC        = 0x0002,
 106         CD_FLAG_DISC_LOCKED     = 0x0004,
 107         CD_FLAG_DISC_REMOVABLE  = 0x0008,
 108         CD_FLAG_TAGGED_QUEUING  = 0x0010,
 109         CD_FLAG_CHANGER         = 0x0040,
 110         CD_FLAG_ACTIVE          = 0x0080,
 111         CD_FLAG_SCHED_ON_COMP   = 0x0100,
 112         CD_FLAG_RETRY_UA        = 0x0200,
 113         CD_FLAG_VALID_MEDIA     = 0x0400,
 114         CD_FLAG_VALID_TOC       = 0x0800,
 115         CD_FLAG_SCTX_INIT       = 0x1000,
 116         CD_FLAG_OPEN            = 0x2000
 117 } cd_flags;
 118
 119 typedef enum {
 120         CD_CCB_PROBE            = 0x01,
 121         CD_CCB_BUFFER_IO        = 0x02,
 122         CD_CCB_WAITING          = 0x03,
 123         CD_CCB_TYPE_MASK        = 0x0F,
 124         CD_CCB_RETRY_UA         = 0x10
 125 } cd_ccb_state;
 126
 127 typedef enum {
 128         CHANGER_TIMEOUT_SCHED           = 0x01,
 129         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
 130         CHANGER_MANUAL_CALL             = 0x04,
 131         CHANGER_NEED_TIMEOUT            = 0x08
 132 } cd_changer_flags;
 133
 134 #define ccb_state ppriv_field0
 135 #define ccb_bio ppriv_ptr1
 136
 137 struct cd_tocdata {
 138         struct ioc_toc_header header;
 139         struct cd_toc_entry entries[100];
 140 };
 141
 142 struct cd_toc_single {
 143         struct ioc_toc_header header;
 144         struct cd_toc_entry entry;
 145 };
 146
 147 typedef enum {
 148         CD_STATE_PROBE,
 149         CD_STATE_NORMAL
 150 } cd_state;
 151
 152 struct cd_softc {
 153         cam_pinfo               pinfo;
 154         cd_state                state;
 155         volatile cd_flags       flags;
 156         struct bio_queue_head   bio_queue;
 157         LIST_HEAD(, ccb_hdr)    pending_ccbs;
 158         struct cd_params        params;
 159         struct disk             disk;
 160         union ccb               saved_ccb;
 161         cd_quirks               quirks;
 162         struct devstat          device_stats;
 163         STAILQ_ENTRY(cd_softc)  changer_links;
 164         struct cdchanger        *changer;
 165         int                     bufs_left;
 166         struct cam_periph       *periph;
 167         int                     minimum_command_size;
 168         int                     outstanding_cmds;
 169         struct task             sysctl_task;
 170         struct sysctl_ctx_list  sysctl_ctx;
 171         struct sysctl_oid       *sysctl_tree;
 172         STAILQ_HEAD(, cd_mode_params)   mode_queue;
 173         struct cd_tocdata       toc;
 174 };
 175
 176 struct cd_page_sizes {
 177         int page;
 178         int page_size;
 179 };
 180
 181 static struct cd_page_sizes cd_page_size_table[] =
 182 {
 183         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
 184 };
 185
 186 struct cd_quirk_entry {
 187         struct scsi_inquiry_pattern inq_pat;
 188         cd_quirks quirks;
 189 };
 190
 191 /*
 192  * The changer quirk entries aren't strictly necessary.  Basically, what
 193  * they do is tell cdregister() up front that a device is a changer.
 194  * Otherwise, it will figure that fact out once it sees a LUN on the device
 195  * that is greater than 0.  If it is known up front that a device is a changer,
 196  * all I/O to the device will go through the changer scheduling routines, as
 197  * opposed to the "normal" CD code.
 198  *
 199  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
 200  * your device hangs when it gets a 10 byte command.  Adding a quirk just
 201  * to get rid of the informative diagnostic message is not acceptable.  All
 202  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
 203  * referenced in a comment along with the quirk) , and must be approved by
 204  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
 205  * be removed until the submitter can explain why they are needed.
 206  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
 207  * when the CAM_NEW_TRAN_CODE work is done.
 208  */
 209 static struct cd_quirk_entry cd_quirk_table[] =
 210 {
 211         {
 212                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
 213                  /*quirks*/ CD_Q_CHANGER
 214         },
 215         {
 216                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
 217                   "*"}, /* quirks */ CD_Q_CHANGER
 218         },
 219         {
 220                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
 221                  /* quirks */ CD_Q_CHANGER
 222         },
 223         {
 224                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
 225                 /* quirks */ CD_Q_BCD_TRACKS
 226         }
 227 };
 228
 229 static  d_open_t        cdopen;
 230 static  d_close_t       cdclose;
 231 static  d_ioctl_t       cdioctl;
 232 static  d_strategy_t    cdstrategy;
 233
 234 static  periph_init_t   cdinit;
 235 static  periph_ctor_t   cdregister;
 236 static  periph_dtor_t   cdcleanup;
 237 static  periph_start_t  cdstart;
 238 static  periph_oninv_t  cdoninvalidate;
 239 static  void            cdasync(void *callback_arg, u_int32_t code,
 240                                 struct cam_path *path, void *arg);
 241 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
 242 static  void            cdshorttimeout(void *arg);
 243 static  void            cdschedule(struct cam_periph *periph, int priority);
 244 static  void            cdrunchangerqueue(void *arg);
 245 static  void            cdchangerschedule(struct cd_softc *softc);
 246 static  int             cdrunccb(union ccb *ccb,
 247                                  int (*error_routine)(union ccb *ccb,
 248                                                       u_int32_t cam_flags,
 249                                                       u_int32_t sense_flags),
 250                                  u_int32_t cam_flags, u_int32_t sense_flags);
 251 static union    ccb     *cdgetccb(struct cam_periph *periph,
 252                                   u_int32_t priority);
 253 static  void            cddone(struct cam_periph *periph,
 254                                union ccb *start_ccb);
 255 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
 256                                 u_int32_t sense_flags);
 257 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
 258 static  int             cdgetpagesize(int page_num);
 259 static  void            cdprevent(struct cam_periph *periph, int action);
 260 static  int             cdcheckmedia(struct cam_periph *periph);
 261 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
 262 static  int             cd6byteworkaround(union ccb *ccb);
 263 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode,
 264                                   u_int32_t start, u_int8_t *data,
 265                                   u_int32_t len, u_int32_t sense_flags);
 266 static  int             cdgetmode(struct cam_periph *periph,
 267                                   struct cd_mode_params *data, u_int32_t page);
 268 static  int             cdsetmode(struct cam_periph *periph,
 269                                   struct cd_mode_params *data);
 270 static  int             cdplay(struct cam_periph *periph, u_int32_t blk,
 271                                u_int32_t len);
 272 static  int             cdreadsubchannel(struct cam_periph *periph,
 273                                          u_int32_t mode, u_int32_t format,
 274                                          int track,
 275                                          struct cd_sub_channel_info *data,
 276                                          u_int32_t len);
 277 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm,
 278                                   u_int32_t starts, u_int32_t startf,
 279                                   u_int32_t endm, u_int32_t ends,
 280                                   u_int32_t endf);
 281 static  int             cdplaytracks(struct cam_periph *periph,
 282                                      u_int32_t strack, u_int32_t sindex,
 283                                      u_int32_t etrack, u_int32_t eindex);
 284 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
 285 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
 286 static  int             cdstartunit(struct cam_periph *periph, int load);
 287 static  int             cdsetspeed(struct cam_periph *periph,
 288                                    u_int32_t rdspeed, u_int32_t wrspeed);
 289 static  int             cdreportkey(struct cam_periph *periph,
 290                                     struct dvd_authinfo *authinfo);
 291 static  int             cdsendkey(struct cam_periph *periph,
 292                                   struct dvd_authinfo *authinfo);
 293 static  int             cdreaddvdstructure(struct cam_periph *periph,
 294                                            struct dvd_struct *dvdstruct);
 295
 296 static struct periph_driver cddriver =
 297 {
 298         cdinit, "cd",
 299         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
 300 };
 301
 302 PERIPHDRIVER_DECLARE(cd, cddriver);
 303
 304 static struct dev_ops cd_ops = {
 305         { "cd", SCSICD_CDEV_MAJOR, D_DISK | D_MPSAFE },
 306         .d_open = cdopen,
 307         .d_close = cdclose,
 308         .d_read = physread,
 309         .d_write = physwrite,
 310         .d_ioctl = cdioctl,
 311         .d_strategy = cdstrategy
 312 };
 313
 314 static struct extend_array *cdperiphs;
 315
 316 #ifndef CHANGER_MIN_BUSY_SECONDS
 317 #define CHANGER_MIN_BUSY_SECONDS        5
 318 #endif
 319 #ifndef CHANGER_MAX_BUSY_SECONDS
 320 #define CHANGER_MAX_BUSY_SECONDS        15
 321 #endif
 322
 323 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
 324 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
 325
 326 SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
 327 SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0, "CD Changer");
 328 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
 329            &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
 330 TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds);
 331 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
 332            &changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
 333 TUNABLE_INT("kern.cam.cd.changer.max_busy_seconds", &changer_max_busy_seconds);
 334
 335 struct cdchanger {
 336         path_id_t                        path_id;
 337         target_id_t                      target_id;
 338         int                              num_devices;
 339         struct camq                      devq;
 340         struct timeval                   start_time;
 341         struct cd_softc                  *cur_device;
 342         struct callout                   short_handle;
 343         struct callout                   long_handle;
 344         volatile cd_changer_flags        flags;
 345         STAILQ_ENTRY(cdchanger)          changer_links;
 346         STAILQ_HEAD(chdevlist, cd_softc) chluns;
 347 };
 348
 349 static struct lock changerq_lock;
 350 static STAILQ_HEAD(changerlist, cdchanger) changerq;
 351 static int num_changers;
 352
 353 MALLOC_DEFINE(M_SCSICD, "scsi_cd", "scsi_cd buffers");
 354
 355 static void
 356 cdinit(void)
 357 {
 358         cam_status status;
 359
 360         lockinit(&changerq_lock, "cdchangerq", 0, LK_CANRECURSE);
 361         STAILQ_INIT(&changerq);
 362
 363         /*
 364          * Create our extend array for storing the devices we attach to.
 365          */
 366         cdperiphs = cam_extend_new();
 367         if (cdperiphs == NULL) {
 368                 kprintf("cd: Failed to alloc extend array!\n");
 369                 return;
 370         }
 371
 372         /*
 373          * Install a global async callback.  This callback will
 374          * receive async callbacks like "new device found".
 375          */
 376         status = xpt_register_async(AC_FOUND_DEVICE, cdasync, NULL, NULL);
 377
 378         if (status != CAM_REQ_CMP) {
 379                 kprintf("cd: Failed to attach master async callback "
 380                        "due to status 0x%x!\n", status);
 381         }
 382 }
 383
 384 static void
 385 cdoninvalidate(struct cam_periph *periph)
 386 {
 387         struct cd_softc *softc;
 388         struct buf *q_bp;
 389         struct bio *q_bio;
 390
 391         softc = (struct cd_softc *)periph->softc;
 392
 393         /*
 394          * De-register any async callbacks.
 395          */
 396         xpt_register_async(0, cdasync, periph, periph->path);
 397
 398         softc->flags |= CD_FLAG_INVALID;
 399
 400         /*
 401          * Return all queued I/O with ENXIO.
 402          * XXX Handle any transactions queued to the card
 403          *     with XPT_ABORT_CCB.
 404          */
 405         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
 406                 bioq_remove(&softc->bio_queue, q_bio);
 407                 q_bp = q_bio->bio_buf;
 408                 q_bp->b_resid = q_bp->b_bcount;
 409                 q_bp->b_error = ENXIO;
 410                 q_bp->b_flags |= B_ERROR;
 411                 biodone(q_bio);
 412         }
 413
 414         /*
 415          * If this device is part of a changer, and it was scheduled
 416          * to run, remove it from the run queue since we just nuked
 417          * all of its scheduled I/O.
 418          */
 419         if ((softc->flags & CD_FLAG_CHANGER)
 420          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
 421                 camq_remove(&softc->changer->devq, softc->pinfo.index);
 422
 423         xpt_print(periph->path, "lost device\n");
 424 }
 425
 426 static void
 427 cdcleanup(struct cam_periph *periph)
 428 {
 429         struct cd_softc *softc;
 430
 431         softc = (struct cd_softc *)periph->softc;
 432
 433         xpt_print(periph->path, "removing device entry\n");
 434
 435         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 436             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 437                 xpt_print(periph->path, "can't remove sysctl context\n");
 438         }
 439
 440         /*
 441          * In the queued, non-active case, the device in question
 442          * has already been removed from the changer run queue.  Since this
 443          * device is active, we need to de-activate it, and schedule
 444          * another device to run.  (if there is another one to run)
 445          */
 446         if ((softc->flags & CD_FLAG_CHANGER)
 447          && (softc->flags & CD_FLAG_ACTIVE)) {
 448
 449                 /*
 450                  * The purpose of the short timeout is soley to determine
 451                  * whether the current device has finished or not.  Well,
 452                  * since we're removing the active device, we know that it
 453                  * is finished.  So, get rid of the short timeout.
 454                  * Otherwise, if we're in the time period before the short
 455                  * timeout fires, and there are no other devices in the
 456                  * queue to run, there won't be any other device put in the
 457                  * active slot.  i.e., when we call cdrunchangerqueue()
 458                  * below, it won't do anything.  Then, when the short
 459                  * timeout fires, it'll look at the "current device", which
 460                  * we are free below, and possibly panic the kernel on a
 461                  * bogus pointer reference.
 462                  *
 463                  * The long timeout doesn't really matter, since we
 464                  * decrement the qfrozen_cnt to indicate that there is
 465                  * nothing in the active slot now.  Therefore, there won't
 466                  * be any bogus pointer references there.
 467                  */
 468                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 469                         callout_stop(&softc->changer->short_handle);
 470                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 471                 }
 472                 softc->changer->devq.qfrozen_cnt--;
 473                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 474                 cdrunchangerqueue(softc->changer);
 475         }
 476
 477         /*
 478          * If we're removing the last device on the changer, go ahead and
 479          * remove the changer device structure.
 480          */
 481         if ((softc->flags & CD_FLAG_CHANGER)
 482          && (--softc->changer->num_devices == 0)) {
 483
 484                 /*
 485                  * Theoretically, there shouldn't be any timeouts left, but
 486                  * I'm not completely sure that that will be the case.  So,
 487                  * it won't hurt to check and see if there are any left.
 488                  */
 489                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 490                         callout_stop(&softc->changer->long_handle);
 491                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 492                 }
 493
 494                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 495                         callout_stop(&softc->changer->short_handle);
 496                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 497                 }
 498
 499                 lockmgr(&changerq_lock, LK_EXCLUSIVE);
 500                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 501                               changer_links);
 502                 num_changers--;
 503                 lockmgr(&changerq_lock, LK_RELEASE);
 504                 xpt_print(periph->path, "removing changer entry\n");
 505                 kfree(softc->changer, M_DEVBUF);
 506         }
 507         devstat_remove_entry(&softc->device_stats);
 508         cam_extend_release(cdperiphs, periph->unit_number);
 509         if (softc->disk.d_rawdev) {
 510                 cam_periph_unlock(periph);
 511                 disk_destroy(&softc->disk);
 512                 cam_periph_lock(periph);
 513         }
 514         kfree(softc, M_DEVBUF);
 515 }
 516
 517 static void
 518 cdasync(void *callback_arg, u_int32_t code,
 519         struct cam_path *path, void *arg)
 520 {
 521         struct cam_periph *periph;
 522
 523         periph = (struct cam_periph *)callback_arg;
 524
 525         switch (code) {
 526         case AC_FOUND_DEVICE:
 527         {
 528                 struct ccb_getdev *cgd;
 529                 cam_status status;
 530
 531                 cgd = (struct ccb_getdev *)arg;
 532                 if (cgd == NULL)
 533                         break;
 534
 535                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 536                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 537                         break;
 538
 539                 /*
 540                  * Don't complain if a valid peripheral is already attached.
 541                  */
 542                 periph = cam_periph_find(cgd->ccb_h.path, "cd");
 543                 if (periph && (periph->flags & CAM_PERIPH_INVALID) == 0)
 544                         break;
 545
 546                 /*
 547                  * Allocate a peripheral instance for
 548                  * this device and start the probe
 549                  * process.
 550                  */
 551                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 552                                           cdcleanup, cdstart,
 553                                           "cd", CAM_PERIPH_BIO,
 554                                           cgd->ccb_h.path, cdasync,
 555                                           AC_FOUND_DEVICE, cgd);
 556
 557                 if (status != CAM_REQ_CMP && status != CAM_REQ_INPROG) {
 558                         kprintf("cdasync: Unable to attach new device "
 559                                "due to status 0x%x\n", status);
 560                 }
 561                 break;
 562         }
 563         case AC_SENT_BDR:
 564         case AC_BUS_RESET:
 565         {
 566                 struct cd_softc *softc;
 567                 struct ccb_hdr *ccbh;
 568
 569                 softc = (struct cd_softc *)periph->softc;
 570                 /*
 571                  * Don't fail on the expected unit attention
 572                  * that will occur.
 573                  */
 574                 softc->flags |= CD_FLAG_RETRY_UA;
 575                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
 576                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 577                 /* FALLTHROUGH */
 578         }
 579         default:
 580                 cam_periph_async(periph, code, path, arg);
 581                 break;
 582         }
 583 }
 584
 585 static void
 586 cdsysctlinit(void *context, int pending)
 587 {
 588         struct cam_periph *periph;
 589         struct cd_softc *softc;
 590         char tmpstr[80], tmpstr2[80];
 591
 592         get_mplock();
 593         periph = (struct cam_periph *)context;
 594         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 595                 rel_mplock();
 596                 return;
 597         }
 598
 599         softc = (struct cd_softc *)periph->softc;
 600         ksnprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
 601         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 602
 603         sysctl_ctx_init(&softc->sysctl_ctx);
 604         softc->flags |= CD_FLAG_SCTX_INIT;
 605         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 606         SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 607         tmpstr2, CTLFLAG_RD, 0, tmpstr);
 608
 609         if (softc->sysctl_tree == NULL) {
 610                 kprintf("cdsysctlinit: unable to allocate sysctl tree\n");
 611                 cam_periph_release(periph);
 612                 rel_mplock();
 613                 return;
 614         }
 615
 616         /*
 617          * Now register the sysctl handler, so the user can the value on
 618          * the fly.
 619          */
 620         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 621                         OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 622                         &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 623                         "Minimum CDB size");
 624
 625         cam_periph_release(periph);
 626         rel_mplock();
 627 }
 628
 629 /*
 630  * We have a handler function for this so we can check the values when the
 631  * user sets them, instead of every time we look at them.
 632  */
 633 static int
 634 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 635 {
 636         int error, value;
 637
 638         value = *(int *)arg1;
 639
 640         error = sysctl_handle_int(oidp, &value, 0, req);
 641
 642         if ((error != 0) || (req->newptr == NULL))
 643                 return (error);
 644
 645         /*
 646          * The only real values we can have here are 6 or 10.  I don't
 647          * really forsee having 12 be an option at any time in the future.
 648          * So if the user sets something less than or equal to 6, we'll set
 649          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 650          *
 651          * I suppose we could just return an error here for the wrong values,
 652          * but I don't think it's necessary to do so, as long as we can
 653          * determine the user's intent without too much trouble.
 654          */
 655         if (value < 6)
 656                 value = 6;
 657         else if (value > 6)
 658                 value = 10;
 659
 660         *(int *)arg1 = value;
 661
 662         return (0);
 663 }
 664
 665
 666 static cam_status
 667 cdregister(struct cam_periph *periph, void *arg)
 668 {
 669         struct cd_softc *softc;
 670         struct ccb_pathinq cpi;
 671         struct ccb_getdev *cgd;
 672         char tmpstr[80];
 673         caddr_t match;
 674
 675         cgd = (struct ccb_getdev *)arg;
 676         if (periph == NULL) {
 677                 kprintf("cdregister: periph was NULL!!\n");
 678                 return(CAM_REQ_CMP_ERR);
 679         }
 680         if (cgd == NULL) {
 681                 kprintf("cdregister: no getdev CCB, can't register device\n");
 682                 return(CAM_REQ_CMP_ERR);
 683         }
 684
 685         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
 686         LIST_INIT(&softc->pending_ccbs);
 687         STAILQ_INIT(&softc->mode_queue);
 688         softc->state = CD_STATE_PROBE;
 689         bioq_init(&softc->bio_queue);
 690         if (SID_IS_REMOVABLE(&cgd->inq_data))
 691                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 692         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 693                 softc->flags |= CD_FLAG_TAGGED_QUEUING;
 694
 695         periph->softc = softc;
 696         softc->periph = periph;
 697
 698         cam_extend_set(cdperiphs, periph->unit_number, periph);
 699
 700         /*
 701          * See if this device has any quirks.
 702          */
 703         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 704                                (caddr_t)cd_quirk_table,
 705                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
 706                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 707
 708         if (match != NULL)
 709                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 710         else
 711                 softc->quirks = CD_Q_NONE;
 712
 713         /* Check if the SIM does not want 6 byte commands */
 714         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
 715         cpi.ccb_h.func_code = XPT_PATH_INQ;
 716         xpt_action((union ccb *)&cpi);
 717         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 718                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 719
 720         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 721
 722         /* The default is 6 byte commands, unless quirked otherwise */
 723         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 724                 softc->minimum_command_size = 10;
 725         else
 726                 softc->minimum_command_size = 6;
 727
 728         /*
 729          * Load the user's default, if any.
 730          */
 731         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 732                 periph->unit_number);
 733         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 734
 735         /* 6 and 10 are the only permissible values here. */
 736         if (softc->minimum_command_size < 6)
 737                 softc->minimum_command_size = 6;
 738         else if (softc->minimum_command_size > 6)
 739                 softc->minimum_command_size = 10;
 740
 741         /*
 742          * We need to register the statistics structure for this device,
 743          * but we don't have the blocksize yet for it.  So, we register
 744          * the structure and indicate that we don't have the blocksize
 745          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 746          * the device type here to be CDROM, rather than just ORing in
 747          * the device type.  This is because this driver can attach to either
 748          * CDROM or WORM devices, and we want this peripheral driver to
 749          * show up in the devstat list as a CD peripheral driver, not a
 750          * WORM peripheral driver.  WORM drives will also have the WORM
 751          * driver attached to them.
 752          */
 753         cam_periph_unlock(periph);
 754         devstat_add_entry(&softc->device_stats, "cd",
 755                           periph->unit_number, 0,
 756                           DEVSTAT_BS_UNAVAILABLE,
 757                           DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_SCSI,
 758                           DEVSTAT_PRIORITY_CD);
 759         disk_create(periph->unit_number, &softc->disk, &cd_ops);
 760         disk_setdisktype(&softc->disk, "optical");
 761         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
 762         softc->disk.d_info.d_dsflags = DSO_ONESLICE | DSO_COMPATLABEL |
 763                                         DSO_COMPATPARTA;
 764         cam_periph_lock(periph);
 765
 766         /*
 767          * Add an async callback so that we get
 768          * notified if this device goes away.
 769          */
 770         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
 771                            cdasync, periph, periph->path);
 772
 773         /*
 774          * If the target lun is greater than 0, we most likely have a CD
 775          * changer device.  Check the quirk entries as well, though, just
 776          * in case someone has a CD tower with one lun per drive or
 777          * something like that.  Also, if we know up front that a
 778          * particular device is a changer, we can mark it as such starting
 779          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 780          * a quirk entry to define something as a changer, however.
 781          */
 782         if (((cgd->ccb_h.target_lun > 0)
 783           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 784          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 785                 struct cdchanger *nchanger;
 786                 struct cam_periph *nperiph;
 787                 struct cam_path *path;
 788                 cam_status status;
 789                 int found;
 790
 791                 /* Set the changer flag in the current device's softc */
 792                 softc->flags |= CD_FLAG_CHANGER;
 793
 794                 /*
 795                  * Now, look around for an existing changer device with the
 796                  * same path and target ID as the current device.
 797                  */
 798                 lockmgr(&changerq_lock, LK_EXCLUSIVE);
 799                 for (found = 0,
 800                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 801                      nchanger != NULL;
 802                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 803                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 804                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 805                                 found = 1;
 806                                 break;
 807                         }
 808                 }
 809                 lockmgr(&changerq_lock, LK_RELEASE);
 810
 811                 /*
 812                  * If we found a matching entry, just add this device to
 813                  * the list of devices on this changer.
 814                  */
 815                 if (found == 1) {
 816                         struct chdevlist *chlunhead;
 817
 818                         chlunhead = &nchanger->chluns;
 819
 820                         /*
 821                          * XXX KDM look at consolidating this code with the
 822                          * code below in a separate function.
 823                          */
 824
 825                         /*
 826                          * Create a path with lun id 0, and see if we can
 827                          * find a matching device
 828                          */
 829                         status = xpt_create_path(&path, /*periph*/ periph,
 830                                                  cgd->ccb_h.path_id,
 831                                                  cgd->ccb_h.target_id, 0);
 832
 833                         if ((status == CAM_REQ_CMP)
 834                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 835                                 struct cd_softc *nsoftc;
 836
 837                                 nsoftc = (struct cd_softc *)nperiph->softc;
 838
 839                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 840                                         nsoftc->flags |= CD_FLAG_CHANGER;
 841                                         nchanger->num_devices++;
 842                                         if (camq_resize(&nchanger->devq,
 843                                            nchanger->num_devices)!=CAM_REQ_CMP){
 844                                                 kprintf("cdregister: "
 845                                                        "camq_resize "
 846                                                        "failed, changer "
 847                                                        "support may "
 848                                                        "be messed up\n");
 849                                         }
 850                                         nsoftc->changer = nchanger;
 851                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 852
 853                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 854                                                           nsoftc,changer_links);
 855                                 }
 856                                 xpt_free_path(path);
 857                         } else if (status == CAM_REQ_CMP)
 858                                 xpt_free_path(path);
 859                         else {
 860                                 kprintf("cdregister: unable to allocate path\n"
 861                                        "cdregister: changer support may be "
 862                                        "broken\n");
 863                         }
 864
 865                         nchanger->num_devices++;
 866
 867                         softc->changer = nchanger;
 868                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 869
 870                         if (camq_resize(&nchanger->devq,
 871                             nchanger->num_devices) != CAM_REQ_CMP) {
 872                                 kprintf("cdregister: camq_resize "
 873                                        "failed, changer support may "
 874                                        "be messed up\n");
 875                         }
 876
 877                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 878                 }
 879                 /*
 880                  * In this case, we don't already have an entry for this
 881                  * particular changer, so we need to create one, add it to
 882                  * the queue, and queue this device on the list for this
 883                  * changer.  Before we queue this device, however, we need
 884                  * to search for lun id 0 on this target, and add it to the
 885                  * queue first, if it exists.  (and if it hasn't already
 886                  * been marked as part of the changer.)
 887                  */
 888                 else {
 889                         nchanger = kmalloc(sizeof(struct cdchanger),
 890                                         M_DEVBUF, M_INTWAIT | M_ZERO);
 891                         callout_init(&nchanger->short_handle);
 892                         callout_init(&nchanger->long_handle);
 893                         if (camq_init(&nchanger->devq, 1) != 0) {
 894                                 softc->flags &= ~CD_FLAG_CHANGER;
 895                                 kprintf("cdregister: changer support "
 896                                        "disabled\n");
 897                                 goto cdregisterexit;
 898                         }
 899
 900                         nchanger->path_id = cgd->ccb_h.path_id;
 901                         nchanger->target_id = cgd->ccb_h.target_id;
 902
 903                         /* this is superfluous, but it makes things clearer */
 904                         nchanger->num_devices = 0;
 905
 906                         STAILQ_INIT(&nchanger->chluns);
 907
 908                         callout_init(&nchanger->long_handle);
 909                         callout_init(&nchanger->short_handle);
 910
 911                         lockmgr(&changerq_lock, LK_EXCLUSIVE);
 912                         num_changers++;
 913                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 914                                            changer_links);
 915                         lockmgr(&changerq_lock, LK_RELEASE);
 916
 917                         /*
 918                          * Create a path with lun id 0, and see if we can
 919                          * find a matching device
 920                          */
 921                         status = xpt_create_path(&path, /*periph*/ periph,
 922                                                  cgd->ccb_h.path_id,
 923                                                  cgd->ccb_h.target_id, 0);
 924
 925                         /*
 926                          * If we were able to allocate the path, and if we
 927                          * find a matching device and it isn't already
 928                          * marked as part of a changer, then we add it to
 929                          * the current changer.
 930                          */
 931                         if ((status == CAM_REQ_CMP)
 932                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
 933                          && ((((struct cd_softc *)periph->softc)->flags &
 934                                CD_FLAG_CHANGER) == 0)) {
 935                                 struct cd_softc *nsoftc;
 936
 937                                 nsoftc = (struct cd_softc *)nperiph->softc;
 938
 939                                 nsoftc->flags |= CD_FLAG_CHANGER;
 940                                 nchanger->num_devices++;
 941                                 if (camq_resize(&nchanger->devq,
 942                                     nchanger->num_devices) != CAM_REQ_CMP) {
 943                                         kprintf("cdregister: camq_resize "
 944                                                "failed, changer support may "
 945                                                "be messed up\n");
 946                                 }
 947                                 nsoftc->changer = nchanger;
 948                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
 949
 950                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
 951                                                    nsoftc, changer_links);
 952                                 xpt_free_path(path);
 953                         } else if (status == CAM_REQ_CMP)
 954                                 xpt_free_path(path);
 955                         else {
 956                                 kprintf("cdregister: unable to allocate path\n"
 957                                        "cdregister: changer support may be "
 958                                        "broken\n");
 959                         }
 960
 961                         softc->changer = nchanger;
 962                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 963                         nchanger->num_devices++;
 964                         if (camq_resize(&nchanger->devq,
 965                             nchanger->num_devices) != CAM_REQ_CMP) {
 966                                 kprintf("cdregister: camq_resize "
 967                                        "failed, changer support may "
 968                                        "be messed up\n");
 969                         }
 970                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
 971                                            changer_links);
 972                 }
 973         }
 974
 975 cdregisterexit:
 976
 977         /*
 978          * Refcount and block open attempts until we are setup
 979          * Can't block
 980          */
 981         cam_periph_hold(periph, 0);
 982
 983         if ((softc->flags & CD_FLAG_CHANGER) == 0)
 984                 xpt_schedule(periph, /*priority*/5);
 985         else
 986                 cdschedule(periph, /*priority*/ 5);
 987
 988         return(CAM_REQ_CMP);
 989 }
 990
 991 static int
 992 cdopen(struct dev_open_args *ap)
 993 {
 994         cdev_t dev = ap->a_head.a_dev;
 995         struct cam_periph *periph;
 996         struct cd_softc *softc;
 997         int unit, error;
 998
 999         unit = dkunit(dev);
1000         periph = cam_extend_get(cdperiphs, unit);
1001
1002         if (periph == NULL)
1003                 return (ENXIO);
1004
1005         softc = (struct cd_softc *)periph->softc;
1006
1007         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1008                 return(ENXIO);
1009
1010         cam_periph_lock(periph);
1011
1012         if (softc->flags & CD_FLAG_INVALID) {
1013                 cam_periph_unlock(periph);
1014                 cam_periph_release(periph);
1015                 return(ENXIO);
1016         }
1017
1018         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
1019                 cam_periph_unlock(periph);
1020                 cam_periph_release(periph);
1021                 return (error);
1022         }
1023
1024         /* Closes aren't symmetrical with opens, so fix up the refcounting. */
1025         if (softc->flags & CD_FLAG_OPEN)
1026                 cam_periph_release(periph);
1027         else
1028                 softc->flags |= CD_FLAG_OPEN;
1029
1030         /*
1031          * Check for media, and set the appropriate flags.  We don't bail
1032          * if we don't have media, but then we don't allow anything but the
1033          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1034          *
1035          * XXX KDM for now, we do fail the open if we don't have media.  We
1036          * can change this once we've figured out how to make the slice
1037          * code work well with media changing underneath it.
1038          */
1039         error = cdcheckmedia(periph);
1040
1041         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1042         cam_periph_unhold(periph, 1);
1043         /* stays acquired */
1044
1045         return (0);
1046 }
1047
1048 static int
1049 cdclose(struct dev_close_args *ap)
1050 {
1051         cdev_t dev = ap->a_head.a_dev;
1052         struct  cam_periph *periph;
1053         struct  cd_softc *softc;
1054         struct  disk_info *info;
1055         int     unit;
1056
1057         unit = dkunit(dev);
1058         periph = cam_extend_get(cdperiphs, unit);
1059         if (periph == NULL)
1060                 return (ENXIO);
1061
1062         softc = (struct cd_softc *)periph->softc;
1063
1064         cam_periph_lock(periph);
1065         cam_periph_hold(periph, 0);
1066
1067         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1068                 cdprevent(periph, PR_ALLOW);
1069
1070         /*
1071          * Unconditionally set the dsopen() flags back to their default
1072          * state.
1073          */
1074         info = &softc->disk.d_info;
1075         info->d_dsflags &= ~DSO_NOLABELS;
1076         info->d_dsflags |= DSO_COMPATLABEL;
1077
1078         /*
1079          * Since we're closing this CD, mark the blocksize as unavailable.
1080          * It will be marked as available when the CD is opened again.
1081          */
1082         softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
1083
1084         /*
1085          * We'll check the media and toc again at the next open().
1086          */
1087         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC|CD_FLAG_OPEN);
1088
1089         cam_periph_unhold(periph, 1);
1090         cam_periph_release(periph);
1091
1092         return (0);
1093 }
1094
1095 static void
1096 cdshorttimeout(void *arg)
1097 {
1098         struct cdchanger *changer;
1099
1100         changer = (struct cdchanger *)arg;
1101
1102         /* Always clear the short timeout flag, since that's what we're in */
1103         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1104
1105         /*
1106          * Check to see if there is any more pending or outstanding I/O for
1107          * this device.  If not, move it out of the active slot.
1108          */
1109         if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
1110          && (changer->cur_device->outstanding_cmds == 0)) {
1111                 changer->flags |= CHANGER_MANUAL_CALL;
1112                 cdrunchangerqueue(changer);
1113         }
1114 }
1115
1116 /*
1117  * This is a wrapper for xpt_schedule.  It only applies to changers.
1118  */
1119 static void
1120 cdschedule(struct cam_periph *periph, int priority)
1121 {
1122         struct cd_softc *softc;
1123
1124         softc = (struct cd_softc *)periph->softc;
1125
1126         /*
1127          * If this device isn't currently queued, and if it isn't
1128          * the active device, then we queue this device and run the
1129          * changer queue if there is no timeout scheduled to do it.
1130          * If this device is the active device, just schedule it
1131          * to run again.  If this device is queued, there should be
1132          * a timeout in place already that will make sure it runs.
1133          */
1134         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1135          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1136                 /*
1137                  * We don't do anything with the priority here.
1138                  * This is strictly a fifo queue.
1139                  */
1140                 softc->pinfo.priority = 1;
1141                 softc->pinfo.generation = ++softc->changer->devq.generation;
1142                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1143
1144                 /*
1145                  * Since we just put a device in the changer queue,
1146                  * check and see if there is a timeout scheduled for
1147                  * this changer.  If so, let the timeout handle
1148                  * switching this device into the active slot.  If
1149                  * not, manually call the timeout routine to
1150                  * bootstrap things.
1151                  */
1152                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1153                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1154                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1155                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1156                         cdrunchangerqueue(softc->changer);
1157                 }
1158         } else if ((softc->flags & CD_FLAG_ACTIVE)
1159                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0)) {
1160                 xpt_schedule(periph, priority);
1161         }
1162 }
1163
1164 static void
1165 cdrunchangerqueue(void *arg)
1166 {
1167         struct cd_softc *softc;
1168         struct cdchanger *changer;
1169         int called_from_timeout;
1170
1171         changer = (struct cdchanger *)arg;
1172
1173         /*
1174          * If we have NOT been called from cdstrategy() or cddone(), and
1175          * instead from a timeout routine, go ahead and clear the
1176          * timeout flag.
1177          */
1178         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1179                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1180                 called_from_timeout = 1;
1181         } else
1182                 called_from_timeout = 0;
1183
1184         /* Always clear the manual call flag */
1185         changer->flags &= ~CHANGER_MANUAL_CALL;
1186
1187         /* nothing to do if the queue is empty */
1188         if (changer->devq.entries <= 0) {
1189                 return;
1190         }
1191
1192         /*
1193          * If the changer queue is frozen, that means we have an active
1194          * device.
1195          */
1196         if (changer->devq.qfrozen_cnt > 0) {
1197
1198                 /*
1199                  * We always need to reset the frozen count and clear the
1200                  * active flag.
1201                  */
1202                 changer->devq.qfrozen_cnt--;
1203                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1204                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1205
1206                 if (changer->cur_device->outstanding_cmds > 0) {
1207                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1208                         changer->cur_device->bufs_left =
1209                                 changer->cur_device->outstanding_cmds;
1210                         if (called_from_timeout) {
1211                                 callout_reset(&changer->long_handle,
1212                                         changer_max_busy_seconds * hz,
1213                                         cdrunchangerqueue, changer);
1214                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1215                         }
1216                         return;
1217                 }
1218
1219                 /*
1220                  * Check to see whether the current device has any I/O left
1221                  * to do.  If so, requeue it at the end of the queue.  If
1222                  * not, there is no need to requeue it.
1223                  */
1224                 if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
1225
1226                         changer->cur_device->pinfo.generation =
1227                                 ++changer->devq.generation;
1228                         camq_insert(&changer->devq,
1229                                 (cam_pinfo *)changer->cur_device);
1230                 }
1231         }
1232
1233         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1234
1235         changer->cur_device = softc;
1236
1237         changer->devq.qfrozen_cnt++;
1238         softc->flags |= CD_FLAG_ACTIVE;
1239
1240         /* Just in case this device is waiting */
1241         wakeup(&softc->changer);
1242         xpt_schedule(softc->periph, /*priority*/ 1);
1243
1244         /*
1245          * Get rid of any pending timeouts, and set a flag to schedule new
1246          * ones so this device gets its full time quantum.
1247          */
1248         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1249                 callout_stop(&changer->long_handle);
1250                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1251         }
1252
1253         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1254                 callout_stop(&changer->short_handle);
1255                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1256         }
1257
1258         /*
1259          * We need to schedule timeouts, but we only do this after the
1260          * first transaction has completed.  This eliminates the changer
1261          * switch time.
1262          */
1263         changer->flags |= CHANGER_NEED_TIMEOUT;
1264 }
1265
1266 static void
1267 cdchangerschedule(struct cd_softc *softc)
1268 {
1269         struct cdchanger *changer;
1270
1271         changer = softc->changer;
1272
1273         /*
1274          * If this is a changer, and this is the current device,
1275          * and this device has at least the minimum time quantum to
1276          * run, see if we can switch it out.
1277          */
1278         if ((softc->flags & CD_FLAG_ACTIVE)
1279          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1280          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1281                 /*
1282                  * We try three things here.  The first is that we
1283                  * check to see whether the schedule on completion
1284                  * flag is set.  If it is, we decrement the number
1285                  * of buffers left, and if it's zero, we reschedule.
1286                  * Next, we check to see whether the pending buffer
1287                  * queue is empty and whether there are no
1288                  * outstanding transactions.  If so, we reschedule.
1289                  * Next, we see if the pending buffer queue is empty.
1290                  * If it is, we set the number of buffers left to
1291                  * the current active buffer count and set the
1292                  * schedule on complete flag.
1293                  */
1294                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1295                         if (--softc->bufs_left == 0) {
1296                                 softc->changer->flags |=
1297                                         CHANGER_MANUAL_CALL;
1298                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1299                                 cdrunchangerqueue(softc->changer);
1300                         }
1301                 } else if ((bioq_first(&softc->bio_queue) == NULL)
1302                         && (softc->outstanding_cmds == 0)) {
1303                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1304                         cdrunchangerqueue(softc->changer);
1305                 }
1306         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1307                 && (softc->flags & CD_FLAG_ACTIVE)) {
1308
1309                 /*
1310                  * Now that the first transaction to this
1311                  * particular device has completed, we can go ahead
1312                  * and schedule our timeouts.
1313                  */
1314                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1315                         callout_reset(&changer->long_handle,
1316                                     changer_max_busy_seconds * hz,
1317                                     cdrunchangerqueue, changer);
1318                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1319                 } else
1320                         kprintf("cdchangerschedule: already have a long"
1321                                " timeout!\n");
1322
1323                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1324                         callout_reset(&changer->short_handle,
1325                                         changer_min_busy_seconds * hz,
1326                                         cdshorttimeout, changer);
1327                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1328                 } else
1329                         kprintf("cdchangerschedule: already have a short "
1330                                "timeout!\n");
1331
1332                 /*
1333                  * We just scheduled timeouts, no need to schedule
1334                  * more.
1335                  */
1336                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1337
1338         }
1339 }
1340
1341 static int
1342 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1343                                               u_int32_t cam_flags,
1344                                               u_int32_t sense_flags),
1345          u_int32_t cam_flags, u_int32_t sense_flags)
1346 {
1347         struct cd_softc *softc;
1348         struct cam_periph *periph;
1349         int error;
1350
1351         periph = xpt_path_periph(ccb->ccb_h.path);
1352         softc = (struct cd_softc *)periph->softc;
1353
1354         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1355                                   &softc->device_stats);
1356
1357         if (softc->flags & CD_FLAG_CHANGER)
1358                 cdchangerschedule(softc);
1359
1360         return(error);
1361 }
1362
1363 static union ccb *
1364 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1365 {
1366         struct cd_softc *softc;
1367
1368         softc = (struct cd_softc *)periph->softc;
1369
1370         if (softc->flags & CD_FLAG_CHANGER) {
1371                 /*
1372                  * This should work the first time this device is woken up,
1373                  * but just in case it doesn't, we use a while loop.
1374                  */
1375                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1376                         /*
1377                          * If this changer isn't already queued, queue it up.
1378                          */
1379                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1380                                 softc->pinfo.priority = 1;
1381                                 softc->pinfo.generation =
1382                                         ++softc->changer->devq.generation;
1383                                 camq_insert(&softc->changer->devq,
1384                                             (cam_pinfo *)softc);
1385                         }
1386                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1387                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1388                          && ((softc->changer->flags
1389                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1390                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1391                                 cdrunchangerqueue(softc->changer);
1392                         } else
1393                                 sim_lock_sleep(&softc->changer, 0, "cgticb", 0,
1394                                                periph->sim->lock);
1395                 }
1396         }
1397         return(cam_periph_getccb(periph, priority));
1398 }
1399
1400 /*
1401  * Actually translate the requested transfer into one the physical driver
1402  * can understand.  The transfer is described by a buf and will include
1403  * only one physical transfer.
1404  */
1405 static int
1406 cdstrategy(struct dev_strategy_args *ap)
1407 {
1408         cdev_t dev = ap->a_head.a_dev;
1409         struct bio *bio = ap->a_bio;
1410         struct buf *bp = bio->bio_buf;
1411         struct cam_periph *periph;
1412         struct cd_softc *softc;
1413         u_int  unit;
1414
1415         unit = dkunit(dev);
1416         periph = cam_extend_get(cdperiphs, unit);
1417         if (periph == NULL) {
1418                 bp->b_error = ENXIO;
1419                 goto bad;
1420         }
1421
1422         cam_periph_lock(periph);
1423         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstrategy\n"));
1424
1425         softc = (struct cd_softc *)periph->softc;
1426
1427         /*
1428          * If the device has been made invalid, error out
1429          */
1430         if ((softc->flags & CD_FLAG_INVALID)) {
1431                 cam_periph_unlock(periph);
1432                 bp->b_error = ENXIO;
1433                 goto bad;
1434         }
1435
1436         /*
1437          * If we don't have valid media, look for it before trying to
1438          * schedule the I/O.
1439          */
1440         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1441                 int error;
1442
1443                 error = cdcheckmedia(periph);
1444                 if (error != 0) {
1445                         cam_periph_unlock(periph);
1446                         bp->b_error = error;
1447                         goto bad;
1448                 }
1449         }
1450
1451         /*
1452          * Place it in the queue of disk activities for this disk
1453          */
1454         bioqdisksort(&softc->bio_queue, bio);
1455
1456         /*
1457          * Schedule ourselves for performing the work.  We do things
1458          * differently for changers.
1459          */
1460         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1461                 xpt_schedule(periph, /* XXX priority */1);
1462         else
1463                 cdschedule(periph, /* priority */ 1);
1464
1465         cam_periph_unlock(periph);
1466         return(0);
1467 bad:
1468         bp->b_flags |= B_ERROR;
1469         /*
1470          * Correctly set the buf to indicate a completed xfer
1471          */
1472         bp->b_resid = bp->b_bcount;
1473         biodone(bio);
1474         return(0);
1475 }
1476
1477 static void
1478 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1479 {
1480         struct cd_softc *softc;
1481         struct bio *bio;
1482         struct buf *bp;
1483         struct ccb_scsiio *csio;
1484         struct scsi_read_capacity_data *rcap;
1485
1486         softc = (struct cd_softc *)periph->softc;
1487
1488         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1489
1490         switch (softc->state) {
1491         case CD_STATE_NORMAL:
1492         {
1493                 bio = bioq_first(&softc->bio_queue);
1494                 if (periph->immediate_priority <= periph->pinfo.priority) {
1495                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1496
1497                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1498                                           periph_links.sle);
1499                         periph->immediate_priority = CAM_PRIORITY_NONE;
1500                         wakeup(&periph->ccb_list);
1501                 } else if (bio == NULL) {
1502                         xpt_release_ccb(start_ccb);
1503                 } else {
1504                         bp = bio->bio_buf;
1505                         bioq_remove(&softc->bio_queue, bio);
1506
1507                         devstat_start_transaction(&softc->device_stats);
1508
1509                         KKASSERT(bio->bio_offset % softc->params.blksize == 0);
1510
1511                         scsi_read_write(&start_ccb->csio,
1512                                         /*retries*/4,
1513                                         /* cbfcnp */ cddone,
1514                                         (bp->b_flags & B_ORDERED) != 0 ?
1515                                             MSG_ORDERED_Q_TAG :
1516                                             MSG_SIMPLE_Q_TAG,
1517                                         /* read */(bp->b_cmd == BUF_CMD_READ),
1518                                         /* byte2 */ 0,
1519                                         /* minimum_cmd_size */ 10,
1520                                         /* lba */
1521                                         bio->bio_offset / softc->params.blksize,
1522                                         bp->b_bcount / softc->params.blksize,
1523                                         /* data_ptr */ bp->b_data,
1524                                         /* dxfer_len */ bp->b_bcount,
1525                                         /* sense_len */ SSD_FULL_SIZE,
1526                                         /* timeout */ 30000);
1527                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1528
1529
1530                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1531                                          &start_ccb->ccb_h, periph_links.le);
1532
1533                         softc->outstanding_cmds++;
1534                         /* We expect a unit attention from this device */
1535                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1536                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1537                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1538                         }
1539
1540                         start_ccb->ccb_h.ccb_bio = bio;
1541                         bio = bioq_first(&softc->bio_queue);
1542
1543                         xpt_action(start_ccb);
1544                 }
1545                 if (bio != NULL) {
1546                         /* Have more work to do, so ensure we stay scheduled */
1547                         xpt_schedule(periph, /* XXX priority */1);
1548                 }
1549                 break;
1550         }
1551         case CD_STATE_PROBE:
1552         {
1553
1554                 rcap = kmalloc(sizeof(*rcap), M_SCSICD, M_INTWAIT);
1555                 csio = &start_ccb->csio;
1556                 scsi_read_capacity(csio,
1557                                    /*retries*/1,
1558                                    cddone,
1559                                    MSG_SIMPLE_Q_TAG,
1560                                    rcap,
1561                                    SSD_FULL_SIZE,
1562                                    /*timeout*/20000);
1563                 start_ccb->ccb_h.ccb_bio = NULL;
1564                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1565                 xpt_action(start_ccb);
1566                 break;
1567         }
1568         }
1569 }
1570
1571 static void
1572 cddone(struct cam_periph *periph, union ccb *done_ccb)
1573 {
1574         struct cd_softc *softc;
1575         struct ccb_scsiio *csio;
1576
1577         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1578
1579         softc = (struct cd_softc *)periph->softc;
1580         csio = &done_ccb->csio;
1581
1582         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1583         case CD_CCB_BUFFER_IO:
1584         {
1585                 struct buf      *bp;
1586                 struct bio      *bio;
1587                 int             error;
1588
1589                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1590                 bp = bio->bio_buf;
1591                 error = 0;
1592
1593                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1594                         int sf;
1595
1596                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1597                                 sf = SF_RETRY_UA;
1598                         else
1599                                 sf = 0;
1600
1601                         error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1602                         if (error == ERESTART) {
1603                                 /*
1604                                  * A retry was scheuled, so
1605                                  * just return.
1606                                  */
1607                                 return;
1608                         }
1609                 }
1610
1611                 if (error != 0) {
1612                         struct bio *q_bio;
1613                         struct buf *q_bp;
1614
1615                         xpt_print(periph->path,
1616                                   "cddone: got error %#x back\n", error);
1617                         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL) {
1618                                 bioq_remove(&softc->bio_queue, q_bio);
1619                                 q_bp = q_bio->bio_buf;
1620                                 q_bp->b_resid = q_bp->b_bcount;
1621                                 q_bp->b_error = EIO;
1622                                 q_bp->b_flags |= B_ERROR;
1623                                 biodone(q_bio);
1624                         }
1625                         bp->b_resid = bp->b_bcount;
1626                         bp->b_error = error;
1627                         bp->b_flags |= B_ERROR;
1628                         cam_release_devq(done_ccb->ccb_h.path,
1629                                          /*relsim_flags*/0,
1630                                          /*reduction*/0,
1631                                          /*timeout*/0,
1632                                          /*getcount_only*/0);
1633
1634                 } else {
1635                         bp->b_resid = csio->resid;
1636                         bp->b_error = 0;
1637                         if (bp->b_resid != 0) {
1638                                 /* Short transfer ??? */
1639                                 bp->b_flags |= B_ERROR;
1640                         }
1641                 }
1642
1643                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1644                 softc->outstanding_cmds--;
1645
1646                 if (softc->flags & CD_FLAG_CHANGER)
1647                         cdchangerschedule(softc);
1648
1649                 devstat_end_transaction_buf(&softc->device_stats, bp);
1650                 biodone(bio);
1651                 break;
1652         }
1653         case CD_CCB_PROBE:
1654         {
1655                 /*
1656                  * Currently (9/30/97) the longest possible announce
1657                  * buffer is 108 bytes, for the first error case below.
1658                  * That is 39 bytes for the basic string, 16 bytes for the
1659                  * biggest sense key (hardware error), 52 bytes for the
1660                  * text of the largest sense qualifier valid for a CDROM,
1661                  * (0x72, 0x03 or 0x04, 0x03), and one byte for the
1662                  * null terminating character.  To allow for longer strings,
1663                  * the announce buffer is 120 bytes.
1664                  *
1665                  * We need to call disk_setdiskinfo() before the disk
1666                  * subsystem will allow any opens.  Because additional
1667                  * probe code is in cdopen() we do this now whether a CD
1668                  * is present or not.
1669                  */
1670                 struct  scsi_read_capacity_data *rdcap;
1671                 struct  disk_info info;
1672                 char    announce_buf[120];
1673                 struct  cd_params *cdp;
1674
1675                 cdp = &softc->params;
1676                 bzero(&info, sizeof(info));
1677                 info.d_type = DTYPE_SCSI;
1678                 info.d_dsflags &= ~DSO_COMPATLABEL;
1679                 info.d_dsflags |= DSO_NOLABELS | DSO_COMPATPARTA;
1680                 info.d_serialno = xpt_path_serialno(periph->path);
1681
1682                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1683
1684                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1685                 cdp->blksize = scsi_4btoul (rdcap->length);
1686
1687                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1688                         ksnprintf(announce_buf, sizeof(announce_buf),
1689                                   "cd present [%lu x %lu byte records]",
1690                                   cdp->disksize, (u_long)cdp->blksize);
1691                         info.d_media_blksize = cdp->blksize;
1692                         info.d_media_blocks = cdp->disksize;
1693                         disk_setdiskinfo(&softc->disk, &info);
1694                 } else {
1695                         int     error;
1696
1697                         /*
1698                          * Retry any UNIT ATTENTION type errors.  They
1699                          * are expected at boot.
1700                          */
1701                         error = cderror(done_ccb, CAM_RETRY_SELTO,
1702                                         SF_RETRY_UA | SF_NO_PRINT);
1703                         if (error == ERESTART) {
1704                                 /*
1705                                  * A retry was scheuled, so
1706                                  * just return.
1707                                  */
1708                                 return;
1709                         } else if (error != 0) {
1710                                 struct scsi_sense_data *sense;
1711                                 int asc, ascq;
1712                                 int sense_key, error_code;
1713                                 int have_sense;
1714                                 cam_status status;
1715                                 struct ccb_getdev cgd;
1716
1717                                 /* Don't wedge this device's queue */
1718                                 cam_release_devq(done_ccb->ccb_h.path,
1719                                                  /*relsim_flags*/0,
1720                                                  /*reduction*/0,
1721                                                  /*timeout*/0,
1722                                                  /*getcount_only*/0);
1723
1724                                 status = done_ccb->ccb_h.status;
1725
1726                                 xpt_setup_ccb(&cgd.ccb_h,
1727                                               done_ccb->ccb_h.path,
1728                                               /* priority */ 1);
1729                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1730                                 xpt_action((union ccb *)&cgd);
1731
1732                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1733                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1734                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1735                                         have_sense = FALSE;
1736                                 else
1737                                         have_sense = TRUE;
1738
1739                                 if (have_sense) {
1740                                         sense = &csio->sense_data;
1741                                         scsi_extract_sense(sense, &error_code,
1742                                                            &sense_key,
1743                                                            &asc, &ascq);
1744                                 }
1745                                 /*
1746                                  * Attach to anything that claims to be a
1747                                  * CDROM or WORM device, as long as it
1748                                  * doesn't return a "Logical unit not
1749                                  * supported" (0x25) error.
1750                                  */
1751                                 if ((have_sense) && (asc != 0x25)
1752                                  && (error_code == SSD_CURRENT_ERROR)) {
1753                                         const char *sense_key_desc;
1754                                         const char *asc_desc;
1755
1756                                         scsi_sense_desc(sense_key, asc, ascq,
1757                                                         &cgd.inq_data,
1758                                                         &sense_key_desc,
1759                                                         &asc_desc);
1760                                         ksnprintf(announce_buf,
1761                                             sizeof(announce_buf),
1762                                                 "Attempt to query device "
1763                                                 "size failed: %s, %s",
1764                                                 sense_key_desc,
1765                                                 asc_desc);
1766                                         info.d_media_blksize = 2048;
1767                                         disk_setdiskinfo(&softc->disk, &info);
1768                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1769                                         /*
1770                                          * We only print out an error for
1771                                          * CDROM type devices.  For WORM
1772                                          * devices, we don't print out an
1773                                          * error since a few WORM devices
1774                                          * don't support CDROM commands.
1775                                          * If we have sense information, go
1776                                          * ahead and print it out.
1777                                          * Otherwise, just say that we
1778                                          * couldn't attach.
1779                                          */
1780
1781                                         /*
1782                                          * Just print out the error, not
1783                                          * the full probe message, when we
1784                                          * don't attach.
1785                                          */
1786                                         if (have_sense)
1787                                                 scsi_sense_print(
1788                                                         &done_ccb->csio);
1789                                         else {
1790                                                 xpt_print(periph->path,
1791                                                     "got CAM status %#x\n",
1792                                                     done_ccb->ccb_h.status);
1793                                         }
1794                                         xpt_print(periph->path, "fatal error, "
1795                                             "failed to attach to device\n");
1796                                         /*
1797                                          * Invalidate this peripheral.
1798                                          */
1799                                         cam_periph_invalidate(periph);
1800
1801                                         announce_buf[0] = '\0';
1802                                 } else {
1803
1804                                         /*
1805                                          * Invalidate this peripheral.
1806                                          */
1807                                         cam_periph_invalidate(periph);
1808                                         announce_buf[0] = '\0';
1809                                 }
1810                         }
1811                 }
1812                 kfree(rdcap, M_SCSICD);
1813                 if (announce_buf[0] != '\0') {
1814                         xpt_announce_periph(periph, announce_buf);
1815                         if (softc->flags & CD_FLAG_CHANGER)
1816                                 cdchangerschedule(softc);
1817                         /*
1818                          * Create our sysctl variables, now that we know
1819                          * we have successfully attached.
1820                          */
1821                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1822                             &softc->sysctl_task);
1823                 }
1824                 softc->state = CD_STATE_NORMAL;
1825                 /*
1826                  * Since our peripheral may be invalidated by an error
1827                  * above or an external event, we must release our CCB
1828                  * before releasing the probe lock on the peripheral.
1829                  * The peripheral will only go away once the last lock
1830                  * is removed, and we need it around for the CCB release
1831                  * operation.
1832                  */
1833                 xpt_release_ccb(done_ccb);
1834                 cam_periph_unhold(periph, 0);
1835                 return;
1836         }
1837         case CD_CCB_WAITING:
1838         {
1839                 /* Caller will release the CCB */
1840                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1841                           ("trying to wakeup ccbwait\n"));
1842
1843                 wakeup(&done_ccb->ccb_h.cbfcnp);
1844                 return;
1845         }
1846         default:
1847                 break;
1848         }
1849         xpt_release_ccb(done_ccb);
1850 }
1851
1852 static union cd_pages *
1853 cdgetpage(struct cd_mode_params *mode_params)
1854 {
1855         union cd_pages *page;
1856
1857         if (mode_params->cdb_size == 10)
1858                 page = (union cd_pages *)find_mode_page_10(
1859                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1860         else
1861                 page = (union cd_pages *)find_mode_page_6(
1862                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1863
1864         return (page);
1865 }
1866
1867 static int
1868 cdgetpagesize(int page_num)
1869 {
1870         int i;
1871
1872         for (i = 0; i < (sizeof(cd_page_size_table)/
1873             sizeof(cd_page_size_table[0])); i++) {
1874                 if (cd_page_size_table[i].page == page_num)
1875                         return (cd_page_size_table[i].page_size);
1876         }
1877         return (-1);
1878 }
1879
1880 static int
1881 cdioctl(struct dev_ioctl_args *ap)
1882 {
1883         cdev_t dev = ap->a_head.a_dev;
1884         caddr_t addr = ap->a_data;
1885         struct  cam_periph *periph;
1886         struct  cd_softc *softc;
1887         int     unit, error = 0;
1888
1889         unit = dkunit(dev);
1890
1891         periph = cam_extend_get(cdperiphs, unit);
1892         if (periph == NULL)
1893                 return(ENXIO);
1894
1895         cam_periph_lock(periph);
1896         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdioctl\n"));
1897
1898         softc = (struct cd_softc *)periph->softc;
1899
1900         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1901                   ("trying to do ioctl %#lx\n", ap->a_cmd));
1902
1903         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
1904                 cam_periph_unlock(periph);
1905                 cam_periph_release(periph);
1906                 return (error);
1907         }
1908
1909         /*
1910          * If we don't have media loaded, check for it.  If still don't
1911          * have media loaded, we can only do a load or eject.
1912          *
1913          * We only care whether media is loaded if this is a cd-specific ioctl
1914          * (thus the IOCGROUP check below).  Note that this will break if
1915          * anyone adds any ioctls into the switch statement below that don't
1916          * have their ioctl group set to 'c'.
1917          */
1918         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1919             && ((ap->a_cmd != CDIOCCLOSE)
1920             && (ap->a_cmd != CDIOCEJECT))
1921             && (IOCGROUP(ap->a_cmd) == 'c')) {
1922                 error = cdcheckmedia(periph);
1923                 if (error != 0) {
1924                         cam_periph_unhold(periph, 1);
1925                         return (error);
1926                 }
1927         }
1928         /*
1929          * Drop the lock here so later mallocs can use WAITOK.  The periph
1930          * is essentially locked still with the cam_periph_hold call above.
1931          */
1932         cam_periph_unlock(periph);
1933
1934         switch (ap->a_cmd) {
1935
1936         case CDIOCPLAYTRACKS:
1937                 {
1938                         struct ioc_play_track *args
1939                             = (struct ioc_play_track *)addr;
1940                         struct cd_mode_params params;
1941                         union cd_pages *page;
1942
1943                         params.alloc_len = sizeof(union cd_mode_data_6_10);
1944                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
1945                                                  M_WAITOK | M_ZERO);
1946
1947                         cam_periph_lock(periph);
1948                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1949                                   ("trying to do CDIOCPLAYTRACKS\n"));
1950
1951                         error = cdgetmode(periph, &params, AUDIO_PAGE);
1952                         if (error) {
1953                                 kfree(params.mode_buf, M_SCSICD);
1954                                 cam_periph_unlock(periph);
1955                                 break;
1956                         }
1957                         page = cdgetpage(&params);
1958
1959                         page->audio.flags &= ~CD_PA_SOTC;
1960                         page->audio.flags |= CD_PA_IMMED;
1961                         error = cdsetmode(periph, &params);
1962                         kfree(params.mode_buf, M_SCSICD);
1963                         if (error) {
1964                                 cam_periph_unlock(periph);
1965                                 break;
1966                         }
1967
1968                         /*
1969                          * This was originally implemented with the PLAY
1970                          * AUDIO TRACK INDEX command, but that command was
1971                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1972                          * drives support it but ATAPI and ATAPI-derivative
1973                          * drives don't seem to support it.  So we keep a
1974                          * cache of the table of contents and translate
1975                          * track numbers to MSF format.
1976                          */
1977                         if (softc->flags & CD_FLAG_VALID_TOC) {
1978                                 union msf_lba *sentry, *eentry;
1979                                 int st, et;
1980
1981                                 if (args->end_track <
1982                                     softc->toc.header.ending_track + 1)
1983                                         args->end_track++;
1984                                 if (args->end_track >
1985                                     softc->toc.header.ending_track + 1)
1986                                         args->end_track =
1987                                             softc->toc.header.ending_track + 1;
1988                                 st = args->start_track -
1989                                         softc->toc.header.starting_track;
1990                                 et = args->end_track -
1991                                         softc->toc.header.starting_track;
1992                                 if ((st < 0)
1993                                  || (et < 0)
1994                                  || (st > (softc->toc.header.ending_track -
1995                                      softc->toc.header.starting_track))) {
1996                                         error = EINVAL;
1997                                         break;
1998                                 }
1999                                 sentry = &softc->toc.entries[st].addr;
2000                                 eentry = &softc->toc.entries[et].addr;
2001                                 error = cdplaymsf(periph,
2002                                                   sentry->msf.minute,
2003                                                   sentry->msf.second,
2004                                                   sentry->msf.frame,
2005                                                   eentry->msf.minute,
2006                                                   eentry->msf.second,
2007                                                   eentry->msf.frame);
2008                         } else {
2009                                 /*
2010                                  * If we don't have a valid TOC, try the
2011                                  * play track index command.  It is part of
2012                                  * the SCSI-2 spec, but was removed in the
2013                                  * MMC specs.  ATAPI and ATAPI-derived
2014                                  * drives don't support it.
2015                                  */
2016                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
2017                                         args->start_track =
2018                                                 bin2bcd(args->start_track);
2019                                         args->end_track =
2020                                                 bin2bcd(args->end_track);
2021                                 }
2022                                 error = cdplaytracks(periph,
2023                                                      args->start_track,
2024                                                      args->start_index,
2025                                                      args->end_track,
2026                                                      args->end_index);
2027                         }
2028                         cam_periph_unlock(periph);
2029                 }
2030                 break;
2031         case CDIOCPLAYMSF:
2032                 {
2033                         struct ioc_play_msf *args
2034                                 = (struct ioc_play_msf *) addr;
2035                         struct cd_mode_params params;
2036                         union cd_pages *page;
2037
2038                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2039                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2040                                                  M_WAITOK | M_ZERO);
2041
2042                         cam_periph_lock(periph);
2043                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2044                                   ("trying to do CDIOCPLAYMSF\n"));
2045
2046                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2047                         if (error) {
2048                                 kfree(params.mode_buf, M_SCSICD);
2049                                 cam_periph_unlock(periph);
2050                                 break;
2051                         }
2052                         page = cdgetpage(&params);
2053
2054                         page->audio.flags &= ~CD_PA_SOTC;
2055                         page->audio.flags |= CD_PA_IMMED;
2056                         error = cdsetmode(periph, &params);
2057                         kfree(params.mode_buf, M_SCSICD);
2058                         if (error) {
2059                                 cam_periph_unlock(periph);
2060                                 break;
2061                         }
2062                         error = cdplaymsf(periph,
2063                                           args->start_m,
2064                                           args->start_s,
2065                                           args->start_f,
2066                                           args->end_m,
2067                                           args->end_s,
2068                                           args->end_f);
2069                         cam_periph_unlock(periph);
2070                 }
2071                 break;
2072         case CDIOCPLAYBLOCKS:
2073                 {
2074                         struct ioc_play_blocks *args
2075                                 = (struct ioc_play_blocks *) addr;
2076                         struct cd_mode_params params;
2077                         union cd_pages *page;
2078
2079                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2080                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2081                                                  M_WAITOK | M_ZERO);
2082                         cam_periph_lock(periph);
2083                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2084                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2085
2086
2087                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2088                         if (error) {
2089                                 kfree(params.mode_buf, M_SCSICD);
2090                                 cam_periph_unlock(periph);
2091                                 break;
2092                         }
2093                         page = cdgetpage(&params);
2094
2095                         page->audio.flags &= ~CD_PA_SOTC;
2096                         page->audio.flags |= CD_PA_IMMED;
2097                         error = cdsetmode(periph, &params);
2098                         kfree(params.mode_buf, M_SCSICD);
2099                         if (error) {
2100                                 cam_periph_unlock(periph);
2101                                 break;
2102                         }
2103                         error = cdplay(periph, args->blk, args->len);
2104                         cam_periph_unlock(periph);
2105                 }
2106                 break;
2107         case CDIOCREADSUBCHANNEL:
2108                 {
2109                         struct ioc_read_subchannel *args
2110                                 = (struct ioc_read_subchannel *) addr;
2111                         struct cd_sub_channel_info *data;
2112                         u_int32_t len = args->data_len;
2113
2114                         data = kmalloc(sizeof(struct cd_sub_channel_info),
2115                                       M_SCSICD, M_WAITOK);
2116
2117                         cam_periph_lock(periph);
2118                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2119                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2120
2121                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2122                             (len < sizeof(struct cd_sub_channel_header))) {
2123                                 kprintf(
2124                                         "scsi_cd: cdioctl: "
2125                                         "cdioreadsubchannel: error, len=%d\n",
2126                                         len);
2127                                 error = EINVAL;
2128                                 kfree(data, M_SCSICD);
2129                                 cam_periph_unlock(periph);
2130                                 break;
2131                         }
2132
2133                         if (softc->quirks & CD_Q_BCD_TRACKS)
2134                                 args->track = bin2bcd(args->track);
2135
2136                         error = cdreadsubchannel(periph, args->address_format,
2137                                 args->data_format, args->track, data, len);
2138
2139                         if (error) {
2140                                 kfree(data, M_SCSICD);
2141                                 cam_periph_unlock(periph);
2142                                 break;
2143                         }
2144                         if (softc->quirks & CD_Q_BCD_TRACKS)
2145                                 data->what.track_info.track_number =
2146                                     bcd2bin(data->what.track_info.track_number);
2147                         len = min(len, ((data->header.data_len[0] << 8) +
2148                                 data->header.data_len[1] +
2149                                 sizeof(struct cd_sub_channel_header)));
2150                         cam_periph_unlock(periph);
2151                         if (copyout(data, args->data, len) != 0) {
2152                                 error = EFAULT;
2153                         }
2154                         kfree(data, M_SCSICD);
2155                 }
2156                 break;
2157
2158         case CDIOREADTOCHEADER:
2159                 {
2160                         struct ioc_toc_header *th;
2161
2162                         th = kmalloc(sizeof(struct ioc_toc_header), M_SCSICD,
2163                                     M_WAITOK);
2164
2165                         cam_periph_lock(periph);
2166                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2167                                   ("trying to do CDIOREADTOCHEADER\n"));
2168
2169                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2170                                           sizeof (*th), /*sense_flags*/0);
2171                         if (error) {
2172                                 kfree(th, M_SCSICD);
2173                                 cam_periph_unlock(periph);
2174                                 break;
2175                         }
2176                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2177                                 /* we are going to have to convert the BCD
2178                                  * encoding on the cd to what is expected
2179                                  */
2180                                 th->starting_track =
2181                                         bcd2bin(th->starting_track);
2182                                 th->ending_track = bcd2bin(th->ending_track);
2183                         }
2184                         th->len = ntohs(th->len);
2185                         bcopy(th, addr, sizeof(*th));
2186                         kfree(th, M_SCSICD);
2187                         cam_periph_unlock(periph);
2188                 }
2189                 break;
2190         case CDIOREADTOCENTRYS:
2191                 {
2192                         struct cd_tocdata *data;
2193                         struct cd_toc_single *lead;
2194                         struct ioc_read_toc_entry *te =
2195                                 (struct ioc_read_toc_entry *) addr;
2196                         struct ioc_toc_header *th;
2197                         u_int32_t len, readlen, idx, num;
2198                         u_int32_t starting_track = te->starting_track;
2199
2200                         data = kmalloc(sizeof(*data), M_SCSICD, M_WAITOK);
2201                         lead = kmalloc(sizeof(*lead), M_SCSICD, M_WAITOK);
2202
2203                         cam_periph_lock(periph);
2204                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2205                                   ("trying to do CDIOREADTOCENTRYS\n"));
2206
2207                         if (te->data_len < sizeof(struct cd_toc_entry)
2208                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2209                          || (te->address_format != CD_MSF_FORMAT
2210                           && te->address_format != CD_LBA_FORMAT)) {
2211                                 error = EINVAL;
2212                                 kprintf("scsi_cd: error in readtocentries, "
2213                                        "returning EINVAL\n");
2214                                 kfree(data, M_SCSICD);
2215                                 kfree(lead, M_SCSICD);
2216                                 cam_periph_unlock(periph);
2217                                 break;
2218                         }
2219
2220                         th = &data->header;
2221                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2222                                           sizeof (*th), /*sense_flags*/0);
2223                         if (error) {
2224                                 kfree(data, M_SCSICD);
2225                                 kfree(lead, M_SCSICD);
2226                                 cam_periph_unlock(periph);
2227                                 break;
2228                         }
2229
2230                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2231                                 /* we are going to have to convert the BCD
2232                                  * encoding on the cd to what is expected
2233                                  */
2234                                 th->starting_track =
2235                                     bcd2bin(th->starting_track);
2236                                 th->ending_track = bcd2bin(th->ending_track);
2237                         }
2238
2239                         if (starting_track == 0)
2240                                 starting_track = th->starting_track;
2241                         else if (starting_track == LEADOUT)
2242                                 starting_track = th->ending_track + 1;
2243                         else if (starting_track < th->starting_track ||
2244                                  starting_track > th->ending_track + 1) {
2245                                 kprintf("scsi_cd: error in readtocentries, "
2246                                        "returning EINVAL\n");
2247                                 kfree(data, M_SCSICD);
2248                                 kfree(lead, M_SCSICD);
2249                                 cam_periph_unlock(periph);
2250                                 error = EINVAL;
2251                                 break;
2252                         }
2253
2254                         /* calculate reading length without leadout entry */
2255                         readlen = (th->ending_track - starting_track + 1) *
2256                                   sizeof(struct cd_toc_entry);
2257
2258                         /* and with leadout entry */
2259                         len = readlen + sizeof(struct cd_toc_entry);
2260                         if (te->data_len < len) {
2261                                 len = te->data_len;
2262                                 if (readlen > len)
2263                                         readlen = len;
2264                         }
2265                         if (len > sizeof(data->entries)) {
2266                                 kprintf("scsi_cd: error in readtocentries, "
2267                                        "returning EINVAL\n");
2268                                 error = EINVAL;
2269                                 kfree(data, M_SCSICD);
2270                                 kfree(lead, M_SCSICD);
2271                                 cam_periph_unlock(periph);
2272                                 break;
2273                         }
2274                         num = len / sizeof(struct cd_toc_entry);
2275
2276                         if (readlen > 0) {
2277                                 error = cdreadtoc(periph, te->address_format,
2278                                                   starting_track,
2279                                                   (u_int8_t *)data,
2280                                                   readlen + sizeof (*th),
2281                                                   /*sense_flags*/0);
2282                                 if (error) {
2283                                         kfree(data, M_SCSICD);
2284                                         kfree(lead, M_SCSICD);
2285                                         cam_periph_unlock(periph);
2286                                         break;
2287                                 }
2288                         }
2289
2290                         /* make leadout entry if needed */
2291                         idx = starting_track + num - 1;
2292                         if (softc->quirks & CD_Q_BCD_TRACKS)
2293                                 th->ending_track = bcd2bin(th->ending_track);
2294                         if (idx == th->ending_track + 1) {
2295                                 error = cdreadtoc(periph, te->address_format,
2296                                                   LEADOUT, (u_int8_t *)lead,
2297                                                   sizeof(*lead),
2298                                                   /*sense_flags*/0);
2299                                 if (error) {
2300                                         kfree(data, M_SCSICD);
2301                                         kfree(lead, M_SCSICD);
2302                                         cam_periph_unlock(periph);
2303                                         break;
2304                                 }
2305                                 data->entries[idx - starting_track] =
2306                                         lead->entry;
2307                         }
2308                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2309                                 for (idx = 0; idx < num - 1; idx++) {
2310                                         data->entries[idx].track =
2311                                             bcd2bin(data->entries[idx].track);
2312                                 }
2313                         }
2314
2315                         cam_periph_unlock(periph);
2316                         error = copyout(data->entries, te->data, len);
2317                         kfree(data, M_SCSICD);
2318                         kfree(lead, M_SCSICD);
2319                 }
2320                 break;
2321         case CDIOREADTOCENTRY:
2322                 {
2323                         struct cd_toc_single *data;
2324                         struct ioc_read_toc_single_entry *te =
2325                                 (struct ioc_read_toc_single_entry *) addr;
2326                         struct ioc_toc_header *th;
2327                         u_int32_t track;
2328
2329                         data = kmalloc(sizeof(*data), M_SCSICD, M_WAITOK);
2330
2331                         cam_periph_lock(periph);
2332                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2333                                   ("trying to do CDIOREADTOCENTRY\n"));
2334
2335                         if (te->address_format != CD_MSF_FORMAT
2336                             && te->address_format != CD_LBA_FORMAT) {
2337                                 kprintf("error in readtocentry, "
2338                                        " returning EINVAL\n");
2339                                 kfree(data, M_SCSICD);
2340                                 error = EINVAL;
2341                                 cam_periph_unlock(periph);
2342                                 break;
2343                         }
2344
2345                         th = &data->header;
2346                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2347                                           sizeof (*th), /*sense_flags*/0);
2348                         if (error) {
2349                                 kfree(data, M_SCSICD);
2350                                 cam_periph_unlock(periph);
2351                                 break;
2352                         }
2353
2354                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2355                                 /* we are going to have to convert the BCD
2356                                  * encoding on the cd to what is expected
2357                                  */
2358                                 th->starting_track =
2359                                     bcd2bin(th->starting_track);
2360                                 th->ending_track = bcd2bin(th->ending_track);
2361                         }
2362                         track = te->track;
2363                         if (track == 0)
2364                                 track = th->starting_track;
2365                         else if (track == LEADOUT)
2366                                 /* OK */;
2367                         else if (track < th->starting_track ||
2368                                  track > th->ending_track + 1) {
2369                                 kprintf("error in readtocentry, "
2370                                        " returning EINVAL\n");
2371                                 kfree(data, M_SCSICD);
2372                                 error = EINVAL;
2373                                 cam_periph_unlock(periph);
2374                                 break;
2375                         }
2376
2377                         error = cdreadtoc(periph, te->address_format, track,
2378                                           (u_int8_t *)data, sizeof(*data),
2379                                           /*sense_flags*/0);
2380                         if (error) {
2381                                 kfree(data, M_SCSICD);
2382                                 cam_periph_unlock(periph);
2383                                 break;
2384                         }
2385
2386                         if (softc->quirks & CD_Q_BCD_TRACKS)
2387                                 data->entry.track = bcd2bin(data->entry.track);
2388                         bcopy(&data->entry, &te->entry,
2389                               sizeof(struct cd_toc_entry));
2390                         kfree(data, M_SCSICD);
2391                         cam_periph_unlock(periph);
2392                 }
2393                 break;
2394         case CDIOCSETPATCH:
2395                 {
2396                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2397                         struct cd_mode_params params;
2398                         union cd_pages *page;
2399
2400                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2401                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2402                                                  M_WAITOK | M_ZERO);
2403
2404                         cam_periph_lock(periph);
2405                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2406                                   ("trying to do CDIOCSETPATCH\n"));
2407
2408                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2409                         if (error) {
2410                                 kfree(params.mode_buf, M_SCSICD);
2411                                 cam_periph_unlock(periph);
2412                                 break;
2413                         }
2414                         page = cdgetpage(&params);
2415
2416                         page->audio.port[LEFT_PORT].channels =
2417                                 arg->patch[0];
2418                         page->audio.port[RIGHT_PORT].channels =
2419                                 arg->patch[1];
2420                         page->audio.port[2].channels = arg->patch[2];
2421                         page->audio.port[3].channels = arg->patch[3];
2422                         error = cdsetmode(periph, &params);
2423                         kfree(params.mode_buf, M_SCSICD);
2424                         cam_periph_unlock(periph);
2425                 }
2426                 break;
2427         case CDIOCGETVOL:
2428                 {
2429                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2430                         struct cd_mode_params params;
2431                         union cd_pages *page;
2432
2433                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2434                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2435                                                  M_WAITOK | M_ZERO);
2436
2437                         cam_periph_lock(periph);
2438                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2439                                   ("trying to do CDIOCGETVOL\n"));
2440
2441                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2442                         if (error) {
2443                                 kfree(params.mode_buf, M_SCSICD);
2444                                 cam_periph_unlock(periph);
2445                                 break;
2446                         }
2447                         page = cdgetpage(&params);
2448
2449                         arg->vol[LEFT_PORT] =
2450                                 page->audio.port[LEFT_PORT].volume;
2451                         arg->vol[RIGHT_PORT] =
2452                                 page->audio.port[RIGHT_PORT].volume;
2453                         arg->vol[2] = page->audio.port[2].volume;
2454                         arg->vol[3] = page->audio.port[3].volume;
2455                         kfree(params.mode_buf, M_SCSICD);
2456                         cam_periph_unlock(periph);
2457                 }
2458                 break;
2459         case CDIOCSETVOL:
2460                 {
2461                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2462                         struct cd_mode_params params;
2463                         union cd_pages *page;
2464
2465                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2466                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2467                                                  M_WAITOK | M_ZERO);
2468
2469                         cam_periph_lock(periph);
2470                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2471                                   ("trying to do CDIOCSETVOL\n"));
2472
2473                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2474                         if (error) {
2475                                 kfree(params.mode_buf, M_SCSICD);
2476                                 cam_periph_unlock(periph);
2477                                 break;
2478                         }
2479                         page = cdgetpage(&params);
2480
2481                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2482                         page->audio.port[LEFT_PORT].volume =
2483                                 arg->vol[LEFT_PORT];
2484                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2485                         page->audio.port[RIGHT_PORT].volume =
2486                                 arg->vol[RIGHT_PORT];
2487                         page->audio.port[2].volume = arg->vol[2];
2488                         page->audio.port[3].volume = arg->vol[3];
2489                         error = cdsetmode(periph, &params);
2490                         cam_periph_unlock(periph);
2491                         kfree(params.mode_buf, M_SCSICD);
2492                 }
2493                 break;
2494         case CDIOCSETMONO:
2495                 {
2496                         struct cd_mode_params params;
2497                         union cd_pages *page;
2498
2499                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2500                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2501                                                  M_WAITOK | M_ZERO);
2502
2503                         cam_periph_lock(periph);
2504                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2505                                   ("trying to do CDIOCSETMONO\n"));
2506
2507                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2508                         if (error) {
2509                                 kfree(params.mode_buf, M_SCSICD);
2510                                 cam_periph_unlock(periph);
2511                                 break;
2512                         }
2513                         page = cdgetpage(&params);
2514
2515                         page->audio.port[LEFT_PORT].channels =
2516                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2517                         page->audio.port[RIGHT_PORT].channels =
2518                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2519                         page->audio.port[2].channels = 0;
2520                         page->audio.port[3].channels = 0;
2521                         error = cdsetmode(periph, &params);
2522                         cam_periph_unlock(periph);
2523                         kfree(params.mode_buf, M_SCSICD);
2524                 }
2525                 break;
2526         case CDIOCSETSTEREO:
2527                 {
2528                         struct cd_mode_params params;
2529                         union cd_pages *page;
2530
2531                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2532                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2533                                                  M_WAITOK | M_ZERO);
2534
2535                         cam_periph_lock(periph);
2536                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2537                                   ("trying to do CDIOCSETSTEREO\n"));
2538
2539                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2540                         if (error) {
2541                                 kfree(params.mode_buf, M_SCSICD);
2542                                 cam_periph_unlock(periph);
2543                                 break;
2544                         }
2545                         page = cdgetpage(&params);
2546
2547                         page->audio.port[LEFT_PORT].channels =
2548                                 LEFT_CHANNEL;
2549                         page->audio.port[RIGHT_PORT].channels =
2550                                 RIGHT_CHANNEL;
2551                         page->audio.port[2].channels = 0;
2552                         page->audio.port[3].channels = 0;
2553                         error = cdsetmode(periph, &params);
2554                         kfree(params.mode_buf, M_SCSICD);
2555                         cam_periph_unlock(periph);
2556                 }
2557                 break;
2558         case CDIOCSETMUTE:
2559                 {
2560                         struct cd_mode_params params;
2561                         union cd_pages *page;
2562
2563                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2564                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2565                                                  M_WAITOK | M_ZERO);
2566
2567                         cam_periph_lock(periph);
2568                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2569                                   ("trying to do CDIOCSETMUTE\n"));
2570
2571                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2572                         if (error) {
2573                                 kfree(&params, M_SCSICD);
2574                                 cam_periph_unlock(periph);
2575                                 break;
2576                         }
2577                         page = cdgetpage(&params);
2578
2579                         page->audio.port[LEFT_PORT].channels = 0;
2580                         page->audio.port[RIGHT_PORT].channels = 0;
2581                         page->audio.port[2].channels = 0;
2582                         page->audio.port[3].channels = 0;
2583                         error = cdsetmode(periph, &params);
2584                         kfree(params.mode_buf, M_SCSICD);
2585                         cam_periph_unlock(periph);
2586                 }
2587                 break;
2588         case CDIOCSETLEFT:
2589                 {
2590                         struct cd_mode_params params;
2591                         union cd_pages *page;
2592
2593                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2594                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2595                                                  M_WAITOK | M_ZERO);
2596
2597                         cam_periph_lock(periph);
2598                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2599                                   ("trying to do CDIOCSETLEFT\n"));
2600
2601                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2602                         if (error) {
2603                                 kfree(params.mode_buf, M_SCSICD);
2604                                 cam_periph_unlock(periph);
2605                                 break;
2606                         }
2607                         page = cdgetpage(&params);
2608
2609                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2610                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2611                         page->audio.port[2].channels = 0;
2612                         page->audio.port[3].channels = 0;
2613                         error = cdsetmode(periph, &params);
2614                         kfree(params.mode_buf, M_SCSICD);
2615                         cam_periph_unlock(periph);
2616                 }
2617                 break;
2618         case CDIOCSETRIGHT:
2619                 {
2620                         struct cd_mode_params params;
2621                         union cd_pages *page;
2622
2623                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2624                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2625                                                  M_WAITOK | M_ZERO);
2626
2627                         cam_periph_lock(periph);
2628                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2629                                   ("trying to do CDIOCSETRIGHT\n"));
2630
2631                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2632                         if (error) {
2633                                 kfree(params.mode_buf, M_SCSICD);
2634                                 cam_periph_unlock(periph);
2635                                 break;
2636                         }
2637                         page = cdgetpage(&params);
2638
2639                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2640                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2641                         page->audio.port[2].channels = 0;
2642                         page->audio.port[3].channels = 0;
2643                         error = cdsetmode(periph, &params);
2644                         kfree(params.mode_buf, M_SCSICD);
2645                         cam_periph_unlock(periph);
2646                 }
2647                 break;
2648         case CDIOCRESUME:
2649                 cam_periph_lock(periph);
2650                 error = cdpause(periph, 1);
2651                 cam_periph_unlock(periph);
2652                 break;
2653         case CDIOCPAUSE:
2654                 cam_periph_lock(periph);
2655                 error = cdpause(periph, 0);
2656                 cam_periph_unlock(periph);
2657                 break;
2658         case CDIOCSTART:
2659                 cam_periph_lock(periph);
2660                 error = cdstartunit(periph, 0);
2661                 cam_periph_unlock(periph);
2662                 break;
2663         case CDIOCCLOSE:
2664                 cam_periph_lock(periph);
2665                 error = cdstartunit(periph, 1);
2666                 cam_periph_unlock(periph);
2667                 break;
2668         case CDIOCSTOP:
2669                 cam_periph_lock(periph);
2670                 error = cdstopunit(periph, 0);
2671                 cam_periph_unlock(periph);
2672                 break;
2673         case CDIOCEJECT:
2674                 cam_periph_lock(periph);
2675                 error = cdstopunit(periph, 1);
2676                 cam_periph_unlock(periph);
2677                 break;
2678         case CDIOCALLOW:
2679                 cam_periph_lock(periph);
2680                 cdprevent(periph, PR_ALLOW);
2681                 cam_periph_unlock(periph);
2682                 break;
2683         case CDIOCPREVENT:
2684                 cam_periph_lock(periph);
2685                 cdprevent(periph, PR_PREVENT);
2686                 cam_periph_unlock(periph);
2687                 break;
2688         case CDIOCSETDEBUG:
2689                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2690                 error = ENOTTY;
2691                 break;
2692         case CDIOCCLRDEBUG:
2693                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2694                 error = ENOTTY;
2695                 break;
2696         case CDIOCRESET:
2697                 /* return (cd_reset(periph)); */
2698                 error = ENOTTY;
2699                 break;
2700         case CDRIOCREADSPEED:
2701                 cam_periph_lock(periph);
2702                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2703                 cam_periph_unlock(periph);
2704                 break;
2705         case CDRIOCWRITESPEED:
2706                 cam_periph_lock(periph);
2707                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2708                 cam_periph_unlock(periph);
2709                 break;
2710         case DVDIOCSENDKEY:
2711         case DVDIOCREPORTKEY: {
2712                 struct dvd_authinfo *authinfo;
2713
2714                 authinfo = (struct dvd_authinfo *)addr;
2715
2716                 cam_periph_lock(periph);
2717                 if (ap->a_cmd == DVDIOCREPORTKEY)
2718                         error = cdreportkey(periph, authinfo);
2719                 else
2720                         error = cdsendkey(periph, authinfo);
2721                 cam_periph_unlock(periph);
2722                 break;
2723         }
2724         case DVDIOCREADSTRUCTURE: {
2725                 struct dvd_struct *dvdstruct;
2726
2727                 dvdstruct = (struct dvd_struct *)addr;
2728
2729                 cam_periph_lock(periph);
2730                 error = cdreaddvdstructure(periph, dvdstruct);
2731                 cam_periph_unlock(periph);
2732
2733                 break;
2734         }
2735         default:
2736                 cam_periph_lock(periph);
2737                 error = cam_periph_ioctl(periph, ap->a_cmd, addr, cderror);
2738                 cam_periph_unlock(periph);
2739                 break;
2740         }
2741
2742         cam_periph_lock(periph);
2743         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2744         cam_periph_unhold(periph, 1);
2745
2746         return (error);
2747 }
2748
2749 static void
2750 cdprevent(struct cam_periph *periph, int action)
2751 {
2752         union   ccb *ccb;
2753         struct  cd_softc *softc;
2754         int     error;
2755
2756         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2757
2758         softc = (struct cd_softc *)periph->softc;
2759
2760         if (((action == PR_ALLOW)
2761           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2762          || ((action == PR_PREVENT)
2763           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2764                 return;
2765         }
2766
2767         ccb = cdgetccb(periph, /* priority */ 1);
2768
2769         scsi_prevent(&ccb->csio,
2770                      /*retries*/ 1,
2771                      cddone,
2772                      MSG_SIMPLE_Q_TAG,
2773                      action,
2774                      SSD_FULL_SIZE,
2775                      /* timeout */60000);
2776
2777         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2778                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2779
2780         xpt_release_ccb(ccb);
2781
2782         if (error == 0) {
2783                 if (action == PR_ALLOW)
2784                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2785                 else
2786                         softc->flags |= CD_FLAG_DISC_LOCKED;
2787         }
2788 }
2789
2790 int
2791 cdcheckmedia(struct cam_periph *periph)
2792 {
2793         struct cd_softc *softc;
2794         struct ioc_toc_header *toch;
2795         struct cd_toc_single leadout;
2796         struct ccb_getdev cgd;
2797         u_int32_t size, toclen;
2798         int error, num_entries, cdindex;
2799         int first_track_audio;
2800         struct disk_info info;
2801
2802         softc = (struct cd_softc *)periph->softc;
2803
2804         first_track_audio = -1;
2805         error = 0;
2806
2807         cdprevent(periph, PR_PREVENT);
2808
2809         /*
2810          * Set up disk info fields and tell the disk subsystem to reset
2811          * its internal copy of the label.
2812          */
2813         bzero(&info, sizeof(info));
2814         info.d_type = DTYPE_SCSI;
2815         info.d_dsflags &= ~DSO_COMPATLABEL;
2816         info.d_dsflags |= DSO_NOLABELS | DSO_COMPATPARTA;
2817         info.d_serialno = xpt_path_serialno(periph->path);
2818
2819         /*
2820          * Grab the inquiry data to get the vendor and product names.
2821          * Put them in the typename and packname for the label.
2822          */
2823         xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
2824         cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2825         xpt_action((union ccb *)&cgd);
2826
2827 #if 0
2828         strncpy(label->d_typename, cgd.inq_data.vendor,
2829                 min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
2830         strncpy(label->d_packname, cgd.inq_data.product,
2831                 min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
2832 #endif
2833         /*
2834          * Clear the valid media and TOC flags until we've verified that we
2835          * have both.
2836          */
2837         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2838
2839         /*
2840          * Get the disc size and block size.  If we can't get it, we don't
2841          * have media, most likely.
2842          */
2843         if ((error = cdsize(periph, &size)) != 0) {
2844                 /*
2845                  * Set a bogus sector size, so the slice code won't try to
2846                  * divide by 0 and panic the kernel.
2847                  */
2848                 info.d_media_blksize = 2048;
2849                 disk_setdiskinfo(&softc->disk, &info);
2850
2851                 /*
2852                  * Tell devstat(9) we don't have a blocksize.
2853                  */
2854                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
2855
2856                 cdprevent(periph, PR_ALLOW);
2857
2858                 return (error);
2859         } else {
2860                 info.d_media_blksize = softc->params.blksize;
2861                 info.d_media_blocks = softc->params.disksize;
2862                 disk_setdiskinfo(&softc->disk, &info);
2863
2864                 /*
2865                  * We unconditionally (re)set the blocksize each time the
2866                  * CD device is opened.  This is because the CD can change,
2867                  * and therefore the blocksize might change.
2868                  * XXX problems here if some slice or partition is still
2869                  * open with the old size?
2870                  */
2871                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2872                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
2873                 softc->device_stats.block_size = softc->params.blksize;
2874
2875                 softc->flags |= CD_FLAG_VALID_MEDIA;
2876         }
2877
2878         /*
2879          * Now we check the table of contents.  This (currently) is only
2880          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2881          * things like present a separate entry in /dev for each track,
2882          * like that acd(4) driver does.
2883          */
2884         bzero(&softc->toc, sizeof(softc->toc));
2885         toch = &softc->toc.header;
2886
2887         /*
2888          * We will get errors here for media that doesn't have a table of
2889          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2890          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2891          * has not been recorded (no complete session) and the Format codes
2892          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2893          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2894          * reading an incomplete session on DDC/CD-R/RW media shall report
2895          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2896          *
2897          * So this isn't fatal if we can't read the table of contents, it
2898          * just means that the user won't be able to issue the play tracks
2899          * ioctl, and likely lots of other stuff won't work either.  They
2900          * need to burn the CD before we can do a whole lot with it.  So
2901          * we don't print anything here if we get an error back.
2902          */
2903         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2904                           SF_NO_PRINT);
2905         /*
2906          * Errors in reading the table of contents aren't fatal, we just
2907          * won't have a valid table of contents cached.
2908          */
2909         if (error != 0) {
2910                 error = 0;
2911                 bzero(&softc->toc, sizeof(softc->toc));
2912                 goto bailout;
2913         }
2914
2915         if (softc->quirks & CD_Q_BCD_TRACKS) {
2916                 toch->starting_track = bcd2bin(toch->starting_track);
2917                 toch->ending_track = bcd2bin(toch->ending_track);
2918         }
2919
2920         /* Number of TOC entries, plus leadout */
2921         num_entries = (toch->ending_track - toch->starting_track) + 2;
2922
2923         if (num_entries <= 0)
2924                 goto bailout;
2925
2926         toclen = num_entries * sizeof(struct cd_toc_entry);
2927
2928         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2929                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2930                           SF_NO_PRINT);
2931         if (error != 0) {
2932                 error = 0;
2933                 bzero(&softc->toc, sizeof(softc->toc));
2934                 goto bailout;
2935         }
2936
2937         if (softc->quirks & CD_Q_BCD_TRACKS) {
2938                 toch->starting_track = bcd2bin(toch->starting_track);
2939                 toch->ending_track = bcd2bin(toch->ending_track);
2940         }
2941         toch->len = scsi_2btoul((uint8_t *)&toch->len);
2942
2943         /*
2944          * XXX KDM is this necessary?  Probably only if the drive doesn't
2945          * return leadout information with the table of contents.
2946          */
2947         cdindex = toch->starting_track + num_entries -1;
2948         if (cdindex == toch->ending_track + 1) {
2949
2950                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2951                                   (u_int8_t *)&leadout, sizeof(leadout),
2952                                   SF_NO_PRINT);
2953                 if (error != 0) {
2954                         error = 0;
2955                         goto bailout;
2956                 }
2957                 softc->toc.entries[cdindex - toch->starting_track] =
2958                         leadout.entry;
2959         }
2960         if (softc->quirks & CD_Q_BCD_TRACKS) {
2961                 for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
2962                         softc->toc.entries[cdindex].track =
2963                                 bcd2bin(softc->toc.entries[cdindex].track);
2964                 }
2965         }
2966
2967         /*
2968          * Run through the TOC entries, find the first entry and determine
2969          * whether it is an audio or data track.
2970          */
2971         for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
2972                 if (softc->toc.entries[cdindex].track == toch->starting_track) {
2973                         if (softc->toc.entries[cdindex].control & 0x04)
2974                                 first_track_audio = 0;
2975                         else
2976                                 first_track_audio = 1;
2977                         break;
2978                 }
2979         }
2980
2981         /*
2982          * If first_track_audio is non-zero, we either have an error (e.g.
2983          * couldn't find the starting track) or the first track is an audio
2984          * track.  If first_track_audio is 0, the first track is a data
2985          * track that could have a disklabel.  Attempt to read the
2986          * disklabel off the media, just in case the user put one there.
2987          */
2988         if (first_track_audio == 0) {
2989                 info.d_dsflags |= DSO_COMPATLABEL;
2990                 info.d_dsflags &= ~DSO_NOLABELS;
2991                 disk_setdiskinfo(&softc->disk, &info);
2992         }
2993         softc->flags |= CD_FLAG_VALID_TOC;
2994
2995 bailout:
2996         return (error);
2997 }
2998
2999 static int
3000 cdsize(struct cam_periph *periph, u_int32_t *size)
3001 {
3002         struct cd_softc *softc;
3003         union ccb *ccb;
3004         struct scsi_read_capacity_data *rcap_buf;
3005         int error;
3006
3007         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
3008
3009         softc = (struct cd_softc *)periph->softc;
3010
3011         ccb = cdgetccb(periph, /* priority */ 1);
3012
3013         rcap_buf = kmalloc(sizeof(struct scsi_read_capacity_data),
3014                           M_SCSICD, M_INTWAIT | M_ZERO);
3015
3016         scsi_read_capacity(&ccb->csio,
3017                            /*retries*/ 1,
3018                            cddone,
3019                            MSG_SIMPLE_Q_TAG,
3020                            rcap_buf,
3021                            SSD_FULL_SIZE,
3022                            /* timeout */20000);
3023
3024         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3025                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
3026
3027         xpt_release_ccb(ccb);
3028
3029         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
3030         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
3031         /*
3032          * SCSI-3 mandates that the reported blocksize shall be 2048.
3033          * Older drives sometimes report funny values, trim it down to
3034          * 2048, or other parts of the kernel will get confused.
3035          *
3036          * XXX we leave drives alone that might report 512 bytes, as
3037          * well as drives reporting more weird sizes like perhaps 4K.
3038          */
3039         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
3040                 softc->params.blksize = 2048;
3041
3042         kfree(rcap_buf, M_SCSICD);
3043         *size = softc->params.disksize;
3044
3045         return (error);
3046
3047 }
3048
3049 static int
3050 cd6byteworkaround(union ccb *ccb)
3051 {
3052         u_int8_t *cdb;
3053         struct cam_periph *periph;
3054         struct cd_softc *softc;
3055         struct cd_mode_params *params;
3056         int frozen, found;
3057
3058         periph = xpt_path_periph(ccb->ccb_h.path);
3059         softc = (struct cd_softc *)periph->softc;
3060
3061         cdb = ccb->csio.cdb_io.cdb_bytes;
3062
3063         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3064          || ((cdb[0] != MODE_SENSE_6)
3065           && (cdb[0] != MODE_SELECT_6)))
3066                 return (0);
3067
3068         /*
3069          * Because there is no convenient place to stash the overall
3070          * cd_mode_params structure pointer, we have to grab it like this.
3071          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3072          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3073          *
3074          * XXX It would be nice if, at some point, we could increase the
3075          * number of available peripheral private pointers.  Both pointers
3076          * are currently used in most every peripheral driver.
3077          */
3078         found = 0;
3079
3080         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3081                 if (params->mode_buf == ccb->csio.data_ptr) {
3082                         found = 1;
3083                         break;
3084                 }
3085         }
3086
3087         /*
3088          * This shouldn't happen.  All mode sense and mode select
3089          * operations in the cd(4) driver MUST go through cdgetmode() and
3090          * cdsetmode()!
3091          */
3092         if (found == 0) {
3093                 xpt_print(periph->path,
3094                     "mode buffer not found in mode queue!\n");
3095                 return (0);
3096         }
3097
3098         params->cdb_size = 10;
3099         softc->minimum_command_size = 10;
3100         xpt_print(ccb->ccb_h.path,
3101             "%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3102             (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3103
3104         if (cdb[0] == MODE_SENSE_6) {
3105                 struct scsi_mode_sense_10 ms10;
3106                 struct scsi_mode_sense_6 *ms6;
3107                 int len;
3108
3109                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3110
3111                 bzero(&ms10, sizeof(ms10));
3112                 ms10.opcode = MODE_SENSE_10;
3113                 ms10.byte2 = ms6->byte2;
3114                 ms10.page = ms6->page;
3115
3116                 /*
3117                  * 10 byte mode header, block descriptor,
3118                  * sizeof(union cd_pages)
3119                  */
3120                 len = sizeof(struct cd_mode_data_10);
3121                 ccb->csio.dxfer_len = len;
3122
3123                 scsi_ulto2b(len, ms10.length);
3124                 ms10.control = ms6->control;
3125                 bcopy(&ms10, cdb, 10);
3126                 ccb->csio.cdb_len = 10;
3127         } else {
3128                 struct scsi_mode_select_10 ms10;
3129                 struct scsi_mode_select_6 *ms6;
3130                 struct scsi_mode_header_6 *header6;
3131                 struct scsi_mode_header_10 *header10;
3132                 struct scsi_mode_page_header *page_header;
3133                 int blk_desc_len, page_num, page_size, len;
3134
3135                 ms6 = (struct scsi_mode_select_6 *)cdb;
3136
3137                 bzero(&ms10, sizeof(ms10));
3138                 ms10.opcode = MODE_SELECT_10;
3139                 ms10.byte2 = ms6->byte2;
3140
3141                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3142                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3143
3144                 page_header = find_mode_page_6(header6);
3145                 page_num = page_header->page_code;
3146
3147                 blk_desc_len = header6->blk_desc_len;
3148
3149                 page_size = cdgetpagesize(page_num);
3150
3151                 if (page_size != (page_header->page_length +
3152                     sizeof(*page_header)))
3153                         page_size = page_header->page_length +
3154                                 sizeof(*page_header);
3155
3156                 len = sizeof(*header10) + blk_desc_len + page_size;
3157
3158                 len = min(params->alloc_len, len);
3159
3160                 /*
3161                  * Since the 6 byte parameter header is shorter than the 10
3162                  * byte parameter header, we need to copy the actual mode
3163                  * page data, and the block descriptor, if any, so things wind
3164                  * up in the right place.  The regions will overlap, but
3165                  * bcopy() does the right thing.
3166                  */
3167                 bcopy(params->mode_buf + sizeof(*header6),
3168                       params->mode_buf + sizeof(*header10),
3169                       len - sizeof(*header10));
3170
3171                 /* Make sure these fields are set correctly. */
3172                 scsi_ulto2b(0, header10->data_length);
3173                 header10->medium_type = 0;
3174                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3175
3176                 ccb->csio.dxfer_len = len;
3177
3178                 scsi_ulto2b(len, ms10.length);
3179                 ms10.control = ms6->control;
3180                 bcopy(&ms10, cdb, 10);
3181                 ccb->csio.cdb_len = 10;
3182         }
3183
3184         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3185         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3186         xpt_action(ccb);
3187         if (frozen) {
3188                 cam_release_devq(ccb->ccb_h.path,
3189                                  /*relsim_flags*/0,
3190                                  /*openings*/0,
3191                                  /*timeout*/0,
3192                                  /*getcount_only*/0);
3193         }
3194
3195         return (ERESTART);
3196 }
3197
3198 static int
3199 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3200 {
3201         struct cd_softc *softc;
3202         struct cam_periph *periph;
3203         int error;
3204
3205         periph = xpt_path_periph(ccb->ccb_h.path);
3206         softc = (struct cd_softc *)periph->softc;
3207
3208         error = 0;
3209
3210         /*
3211          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3212          * CDB comes back with this particular error, try transforming it
3213          * into the 10 byte version.
3214          */
3215         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3216                 error = cd6byteworkaround(ccb);
3217         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3218                      CAM_SCSI_STATUS_ERROR)
3219          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3220          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3221          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3222          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3223                 int sense_key, error_code, asc, ascq;
3224
3225                 scsi_extract_sense(&ccb->csio.sense_data,
3226                                    &error_code, &sense_key, &asc, &ascq);
3227                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3228                         error = cd6byteworkaround(ccb);
3229         }
3230
3231         if (error == ERESTART)
3232                 return (error);
3233
3234         /*
3235          * XXX
3236          * Until we have a better way of doing pack validation,
3237          * don't treat UAs as errors.
3238          */
3239         sense_flags |= SF_RETRY_UA;
3240         return (cam_periph_error(ccb, cam_flags, sense_flags,
3241                                  &softc->saved_ccb));
3242 }
3243
3244 /*
3245  * Read table of contents
3246  */
3247 static int
3248 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3249           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3250 {
3251         struct scsi_read_toc *scsi_cmd;
3252         u_int32_t ntoc;
3253         struct ccb_scsiio *csio;
3254         union ccb *ccb;
3255         int error;
3256
3257         ntoc = len;
3258         error = 0;
3259
3260         ccb = cdgetccb(periph, /* priority */ 1);
3261
3262         csio = &ccb->csio;
3263
3264         cam_fill_csio(csio,
3265                       /* retries */ 1,
3266                       /* cbfcnp */ cddone,
3267                       /* flags */ CAM_DIR_IN,
3268                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3269                       /* data_ptr */ data,
3270                       /* dxfer_len */ len,
3271                       /* sense_len */ SSD_FULL_SIZE,
3272                       sizeof(struct scsi_read_toc),
3273                       /* timeout */ 50000);
3274
3275         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3276         bzero (scsi_cmd, sizeof(*scsi_cmd));
3277
3278         if (mode == CD_MSF_FORMAT)
3279                 scsi_cmd->byte2 |= CD_MSF;
3280         scsi_cmd->from_track = start;
3281         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3282         scsi_cmd->data_len[0] = (ntoc) >> 8;
3283         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3284
3285         scsi_cmd->op_code = READ_TOC;
3286
3287         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3288                          /*sense_flags*/SF_RETRY_UA | sense_flags);
3289
3290         xpt_release_ccb(ccb);
3291
3292         return(error);
3293 }
3294
3295 static int
3296 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3297                  u_int32_t format, int track,
3298                  struct cd_sub_channel_info *data, u_int32_t len)
3299 {
3300         struct scsi_read_subchannel *scsi_cmd;
3301         struct ccb_scsiio *csio;
3302         union ccb *ccb;
3303         int error;
3304
3305         error = 0;
3306
3307         ccb = cdgetccb(periph, /* priority */ 1);
3308
3309         csio = &ccb->csio;
3310
3311         cam_fill_csio(csio,
3312                       /* retries */ 1,
3313                       /* cbfcnp */ cddone,
3314                       /* flags */ CAM_DIR_IN,
3315                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3316                       /* data_ptr */ (u_int8_t *)data,
3317                       /* dxfer_len */ len,
3318                       /* sense_len */ SSD_FULL_SIZE,
3319                       sizeof(struct scsi_read_subchannel),
3320                       /* timeout */ 50000);
3321
3322         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3323         bzero (scsi_cmd, sizeof(*scsi_cmd));
3324
3325         scsi_cmd->op_code = READ_SUBCHANNEL;
3326         if (mode == CD_MSF_FORMAT)
3327                 scsi_cmd->byte1 |= CD_MSF;
3328         scsi_cmd->byte2 = SRS_SUBQ;
3329         scsi_cmd->subchan_format = format;
3330         scsi_cmd->track = track;
3331         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3332         scsi_cmd->control = 0;
3333
3334         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3335                          /*sense_flags*/SF_RETRY_UA);
3336
3337         xpt_release_ccb(ccb);
3338
3339         return(error);
3340 }
3341
3342 /*
3343  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3344  * routine.  See comments in cd6byteworkaround() for details.
3345  */
3346 static int
3347 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3348           u_int32_t page)
3349 {
3350         struct ccb_scsiio *csio;
3351         struct cd_softc *softc;
3352         union ccb *ccb;
3353         int param_len;
3354         int error;
3355
3356         softc = (struct cd_softc *)periph->softc;
3357
3358         ccb = cdgetccb(periph, /* priority */ 1);
3359
3360         csio = &ccb->csio;
3361
3362         data->cdb_size = softc->minimum_command_size;
3363         if (data->cdb_size < 10)
3364                 param_len = sizeof(struct cd_mode_data);
3365         else
3366                 param_len = sizeof(struct cd_mode_data_10);
3367
3368         /* Don't say we've got more room than we actually allocated */
3369         param_len = min(param_len, data->alloc_len);
3370
3371         scsi_mode_sense_len(csio,
3372                             /* retries */ 1,
3373                             /* cbfcnp */ cddone,
3374                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3375                             /* dbd */ 0,
3376                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3377                             /* page */ page,
3378                             /* param_buf */ data->mode_buf,
3379                             /* param_len */ param_len,
3380                             /* minimum_cmd_size */ softc->minimum_command_size,
3381                             /* sense_len */ SSD_FULL_SIZE,
3382                             /* timeout */ 50000);
3383
3384         /*
3385          * It would be nice not to have to do this, but there's no
3386          * available pointer in the CCB that would allow us to stuff the
3387          * mode params structure in there and retrieve it in
3388          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3389          * lets the caller know what CDB size we ended up using, so they
3390          * can find the actual mode page offset.
3391          */
3392         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3393
3394         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3395                          /*sense_flags*/SF_RETRY_UA);
3396
3397         xpt_release_ccb(ccb);
3398
3399         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3400
3401         /*
3402          * This is a bit of belt-and-suspenders checking, but if we run
3403          * into a situation where the target sends back multiple block
3404          * descriptors, we might not have enough space in the buffer to
3405          * see the whole mode page.  Better to return an error than
3406          * potentially access memory beyond our malloced region.
3407          */
3408         if (error == 0) {
3409                 u_int32_t data_len;
3410
3411                 if (data->cdb_size == 10) {
3412                         struct scsi_mode_header_10 *hdr10;
3413
3414                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3415                         data_len = scsi_2btoul(hdr10->data_length);
3416                         data_len += sizeof(hdr10->data_length);
3417                 } else {
3418                         struct scsi_mode_header_6 *hdr6;
3419
3420                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3421                         data_len = hdr6->data_length;
3422                         data_len += sizeof(hdr6->data_length);
3423                 }
3424
3425                 /*
3426                  * Complain if there is more mode data available than we
3427                  * allocated space for.  This could potentially happen if
3428                  * we miscalculated the page length for some reason, if the
3429                  * drive returns multiple block descriptors, or if it sets
3430                  * the data length incorrectly.
3431                  */
3432                 if (data_len > data->alloc_len) {
3433                         xpt_print(periph->path, "allocated modepage %d length "
3434                             "%d < returned length %d\n", page, data->alloc_len,
3435                             data_len);
3436                         error = ENOSPC;
3437                 }
3438         }
3439         return (error);
3440 }
3441
3442 /*
3443  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3444  * routine.  See comments in cd6byteworkaround() for details.
3445  */
3446 static int
3447 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3448 {
3449         struct ccb_scsiio *csio;
3450         struct cd_softc *softc;
3451         union ccb *ccb;
3452         int cdb_size, param_len;
3453         int error;
3454
3455         softc = (struct cd_softc *)periph->softc;
3456
3457         ccb = cdgetccb(periph, /* priority */ 1);
3458
3459         csio = &ccb->csio;
3460
3461         error = 0;
3462
3463         /*
3464          * If the data is formatted for the 10 byte version of the mode
3465          * select parameter list, we need to use the 10 byte CDB.
3466          * Otherwise, we use whatever the stored minimum command size.
3467          */
3468         if (data->cdb_size == 10)
3469                 cdb_size = data->cdb_size;
3470         else
3471                 cdb_size = softc->minimum_command_size;
3472
3473         if (cdb_size >= 10) {
3474                 struct scsi_mode_header_10 *mode_header;
3475                 u_int32_t data_len;
3476
3477                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3478
3479                 data_len = scsi_2btoul(mode_header->data_length);
3480
3481                 scsi_ulto2b(0, mode_header->data_length);
3482                 /*
3483                  * SONY drives do not allow a mode select with a medium_type
3484                  * value that has just been returned by a mode sense; use a
3485                  * medium_type of 0 (Default) instead.
3486                  */
3487                 mode_header->medium_type = 0;
3488
3489                 /*
3490                  * Pass back whatever the drive passed to us, plus the size
3491                  * of the data length field.
3492                  */
3493                 param_len = data_len + sizeof(mode_header->data_length);
3494
3495         } else {
3496                 struct scsi_mode_header_6 *mode_header;
3497
3498                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3499
3500                 param_len = mode_header->data_length + 1;
3501
3502                 mode_header->data_length = 0;
3503                 /*
3504                  * SONY drives do not allow a mode select with a medium_type
3505                  * value that has just been returned by a mode sense; use a
3506                  * medium_type of 0 (Default) instead.
3507                  */
3508                 mode_header->medium_type = 0;
3509         }
3510
3511         /* Don't say we've got more room than we actually allocated */
3512         param_len = min(param_len, data->alloc_len);
3513
3514         scsi_mode_select_len(csio,
3515                              /* retries */ 1,
3516                              /* cbfcnp */ cddone,
3517                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3518                              /* scsi_page_fmt */ 1,
3519                              /* save_pages */ 0,
3520                              /* param_buf */ data->mode_buf,
3521                              /* param_len */ param_len,
3522                              /* minimum_cmd_size */ cdb_size,
3523                              /* sense_len */ SSD_FULL_SIZE,
3524                              /* timeout */ 50000);
3525
3526         /* See comments in cdgetmode() and cd6byteworkaround(). */
3527         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3528
3529         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3530                          /*sense_flags*/SF_RETRY_UA);
3531
3532         xpt_release_ccb(ccb);
3533
3534         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3535
3536         return (error);
3537 }
3538
3539
3540
3541 static int
3542 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3543 {
3544         struct ccb_scsiio *csio;
3545         union ccb *ccb;
3546         int error;
3547         u_int8_t cdb_len;
3548
3549         error = 0;
3550         ccb = cdgetccb(periph, /* priority */ 1);
3551         csio = &ccb->csio;
3552         /*
3553          * Use the smallest possible command to perform the operation.
3554          */
3555         if ((len & 0xffff0000) == 0) {
3556                 /*
3557                  * We can fit in a 10 byte cdb.
3558                  */
3559                 struct scsi_play_10 *scsi_cmd;
3560
3561                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3562                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3563                 scsi_cmd->op_code = PLAY_10;
3564                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3565                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3566                 cdb_len = sizeof(*scsi_cmd);
3567         } else  {
3568                 struct scsi_play_12 *scsi_cmd;
3569
3570                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3571                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3572                 scsi_cmd->op_code = PLAY_12;
3573                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3574                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3575                 cdb_len = sizeof(*scsi_cmd);
3576         }
3577         cam_fill_csio(csio,
3578                       /*retries*/2,
3579                       cddone,
3580                       /*flags*/CAM_DIR_NONE,
3581                       MSG_SIMPLE_Q_TAG,
3582                       /*dataptr*/NULL,
3583                       /*datalen*/0,
3584                       /*sense_len*/SSD_FULL_SIZE,
3585                       cdb_len,
3586                       /*timeout*/50 * 1000);
3587
3588         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3589                          /*sense_flags*/SF_RETRY_UA);
3590
3591         xpt_release_ccb(ccb);
3592
3593         return(error);
3594 }
3595
3596 static int
3597 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3598           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3599 {
3600         struct scsi_play_msf *scsi_cmd;
3601         struct ccb_scsiio *csio;
3602         union ccb *ccb;
3603         int error;
3604
3605         error = 0;
3606
3607         ccb = cdgetccb(periph, /* priority */ 1);
3608
3609         csio = &ccb->csio;
3610
3611         cam_fill_csio(csio,
3612                       /* retries */ 1,
3613                       /* cbfcnp */ cddone,
3614                       /* flags */ CAM_DIR_NONE,
3615                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3616                       /* data_ptr */ NULL,
3617                       /* dxfer_len */ 0,
3618                       /* sense_len */ SSD_FULL_SIZE,
3619                       sizeof(struct scsi_play_msf),
3620                       /* timeout */ 50000);
3621
3622         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3623         bzero (scsi_cmd, sizeof(*scsi_cmd));
3624
3625         scsi_cmd->op_code = PLAY_MSF;
3626         scsi_cmd->start_m = startm;
3627         scsi_cmd->start_s = starts;
3628         scsi_cmd->start_f = startf;
3629         scsi_cmd->end_m = endm;
3630         scsi_cmd->end_s = ends;
3631         scsi_cmd->end_f = endf;
3632
3633         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3634                          /*sense_flags*/SF_RETRY_UA);
3635
3636         xpt_release_ccb(ccb);
3637
3638         return(error);
3639 }
3640
3641
3642 static int
3643 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3644              u_int32_t etrack, u_int32_t eindex)
3645 {
3646         struct scsi_play_track *scsi_cmd;
3647         struct ccb_scsiio *csio;
3648         union ccb *ccb;
3649         int error;
3650
3651         error = 0;
3652
3653         ccb = cdgetccb(periph, /* priority */ 1);
3654
3655         csio = &ccb->csio;
3656
3657         cam_fill_csio(csio,
3658                       /* retries */ 1,
3659                       /* cbfcnp */ cddone,
3660                       /* flags */ CAM_DIR_NONE,
3661                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3662                       /* data_ptr */ NULL,
3663                       /* dxfer_len */ 0,
3664                       /* sense_len */ SSD_FULL_SIZE,
3665                       sizeof(struct scsi_play_track),
3666                       /* timeout */ 50000);
3667
3668         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3669         bzero (scsi_cmd, sizeof(*scsi_cmd));
3670
3671         scsi_cmd->op_code = PLAY_TRACK;
3672         scsi_cmd->start_track = strack;
3673         scsi_cmd->start_index = sindex;
3674         scsi_cmd->end_track = etrack;
3675         scsi_cmd->end_index = eindex;
3676
3677         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3678                          /*sense_flags*/SF_RETRY_UA);
3679
3680         xpt_release_ccb(ccb);
3681
3682         return(error);
3683 }
3684
3685 static int
3686 cdpause(struct cam_periph *periph, u_int32_t go)
3687 {
3688         struct scsi_pause *scsi_cmd;
3689         struct ccb_scsiio *csio;
3690         union ccb *ccb;
3691         int error;
3692
3693         error = 0;
3694
3695         ccb = cdgetccb(periph, /* priority */ 1);
3696
3697         csio = &ccb->csio;
3698
3699         cam_fill_csio(csio,
3700                       /* retries */ 1,
3701                       /* cbfcnp */ cddone,
3702                       /* flags */ CAM_DIR_NONE,
3703                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3704                       /* data_ptr */ NULL,
3705                       /* dxfer_len */ 0,
3706                       /* sense_len */ SSD_FULL_SIZE,
3707                       sizeof(struct scsi_pause),
3708                       /* timeout */ 50000);
3709
3710         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3711         bzero (scsi_cmd, sizeof(*scsi_cmd));
3712
3713         scsi_cmd->op_code = PAUSE;
3714         scsi_cmd->resume = go;
3715
3716         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3717                          /*sense_flags*/SF_RETRY_UA);
3718
3719         xpt_release_ccb(ccb);
3720
3721         return(error);
3722 }
3723
3724 static int
3725 cdstartunit(struct cam_periph *periph, int load)
3726 {
3727         union ccb *ccb;
3728         int error;
3729
3730         error = 0;
3731
3732         ccb = cdgetccb(periph, /* priority */ 1);
3733
3734         scsi_start_stop(&ccb->csio,
3735                         /* retries */ 1,
3736                         /* cbfcnp */ cddone,
3737                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3738                         /* start */ TRUE,
3739                         /* load_eject */ load,
3740                         /* immediate */ FALSE,
3741                         /* sense_len */ SSD_FULL_SIZE,
3742                         /* timeout */ 50000);
3743
3744         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3745                          /*sense_flags*/SF_RETRY_UA);
3746
3747         xpt_release_ccb(ccb);
3748
3749         return(error);
3750 }
3751
3752 static int
3753 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3754 {
3755         union ccb *ccb;
3756         int error;
3757
3758         error = 0;
3759
3760         ccb = cdgetccb(periph, /* priority */ 1);
3761
3762         scsi_start_stop(&ccb->csio,
3763                         /* retries */ 1,
3764                         /* cbfcnp */ cddone,
3765                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3766                         /* start */ FALSE,
3767                         /* load_eject */ eject,
3768                         /* immediate */ FALSE,
3769                         /* sense_len */ SSD_FULL_SIZE,
3770                         /* timeout */ 50000);
3771
3772         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3773                          /*sense_flags*/SF_RETRY_UA);
3774
3775         xpt_release_ccb(ccb);
3776
3777         return(error);
3778 }
3779
3780 static int
3781 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3782 {
3783         struct scsi_set_speed *scsi_cmd;
3784         struct ccb_scsiio *csio;
3785         union ccb *ccb;
3786         int error;
3787
3788         error = 0;
3789         ccb = cdgetccb(periph, /* priority */ 1);
3790         csio = &ccb->csio;
3791
3792         /* Preserve old behavior: units in multiples of CDROM speed */
3793         if (rdspeed < 177)
3794                 rdspeed *= 177;
3795         if (wrspeed < 177)
3796                 wrspeed *= 177;
3797
3798         cam_fill_csio(csio,
3799                       /* retries */ 1,
3800                       /* cbfcnp */ cddone,
3801                       /* flags */ CAM_DIR_NONE,
3802                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3803                       /* data_ptr */ NULL,
3804                       /* dxfer_len */ 0,
3805                       /* sense_len */ SSD_FULL_SIZE,
3806                       sizeof(struct scsi_set_speed),
3807                       /* timeout */ 50000);
3808
3809         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3810         bzero(scsi_cmd, sizeof(*scsi_cmd));
3811
3812         scsi_cmd->opcode = SET_CD_SPEED;
3813         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3814         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3815
3816         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3817                          /*sense_flags*/SF_RETRY_UA);
3818
3819         xpt_release_ccb(ccb);
3820
3821         return(error);
3822 }
3823
3824 static int
3825 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3826 {
3827         union ccb *ccb;
3828         u_int8_t *databuf;
3829         u_int32_t lba;
3830         int error;
3831         int length;
3832
3833         error = 0;
3834         databuf = NULL;
3835         lba = 0;
3836
3837         ccb = cdgetccb(periph, /* priority */ 1);
3838
3839         switch (authinfo->format) {
3840         case DVD_REPORT_AGID:
3841                 length = sizeof(struct scsi_report_key_data_agid);
3842                 break;
3843         case DVD_REPORT_CHALLENGE:
3844                 length = sizeof(struct scsi_report_key_data_challenge);
3845                 break;
3846         case DVD_REPORT_KEY1:
3847                 length = sizeof(struct scsi_report_key_data_key1_key2);
3848                 break;
3849         case DVD_REPORT_TITLE_KEY:
3850                 length = sizeof(struct scsi_report_key_data_title);
3851                 /* The lba field is only set for the title key */
3852                 lba = authinfo->lba;
3853                 break;
3854         case DVD_REPORT_ASF:
3855                 length = sizeof(struct scsi_report_key_data_asf);
3856                 break;
3857         case DVD_REPORT_RPC:
3858                 length = sizeof(struct scsi_report_key_data_rpc);
3859                 break;
3860         case DVD_INVALIDATE_AGID:
3861                 length = 0;
3862                 break;
3863         default:
3864                 error = EINVAL;
3865                 goto bailout;
3866                 break; /* NOTREACHED */
3867         }
3868
3869         if (length != 0) {
3870                 databuf = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
3871         } else {
3872                 databuf = NULL;
3873         }
3874
3875
3876         scsi_report_key(&ccb->csio,
3877                         /* retries */ 1,
3878                         /* cbfcnp */ cddone,
3879                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3880                         /* lba */ lba,
3881                         /* agid */ authinfo->agid,
3882                         /* key_format */ authinfo->format,
3883                         /* data_ptr */ databuf,
3884                         /* dxfer_len */ length,
3885                         /* sense_len */ SSD_FULL_SIZE,
3886                         /* timeout */ 50000);
3887
3888         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3889                          /*sense_flags*/SF_RETRY_UA);
3890
3891         if (error != 0)
3892                 goto bailout;
3893
3894         if (ccb->csio.resid != 0) {
3895                 xpt_print(periph->path, "warning, residual for report key "
3896                     "command is %d\n", ccb->csio.resid);
3897         }
3898
3899         switch(authinfo->format) {
3900         case DVD_REPORT_AGID: {
3901                 struct scsi_report_key_data_agid *agid_data;
3902
3903                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3904
3905                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3906                         RKD_AGID_SHIFT;
3907                 break;
3908         }
3909         case DVD_REPORT_CHALLENGE: {
3910                 struct scsi_report_key_data_challenge *chal_data;
3911
3912                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3913
3914                 bcopy(chal_data->challenge_key, authinfo->keychal,
3915                       min(sizeof(chal_data->challenge_key),
3916                           sizeof(authinfo->keychal)));
3917                 break;
3918         }
3919         case DVD_REPORT_KEY1: {
3920                 struct scsi_report_key_data_key1_key2 *key1_data;
3921
3922                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3923
3924                 bcopy(key1_data->key1, authinfo->keychal,
3925                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3926                 break;
3927         }
3928         case DVD_REPORT_TITLE_KEY: {
3929                 struct scsi_report_key_data_title *title_data;
3930
3931                 title_data = (struct scsi_report_key_data_title *)databuf;
3932
3933                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3934                         RKD_TITLE_CPM_SHIFT;
3935                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3936                         RKD_TITLE_CP_SEC_SHIFT;
3937                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3938                         RKD_TITLE_CMGS_SHIFT;
3939                 bcopy(title_data->title_key, authinfo->keychal,
3940                       min(sizeof(title_data->title_key),
3941                           sizeof(authinfo->keychal)));
3942                 break;
3943         }
3944         case DVD_REPORT_ASF: {
3945                 struct scsi_report_key_data_asf *asf_data;
3946
3947                 asf_data = (struct scsi_report_key_data_asf *)databuf;
3948
3949                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3950                 break;
3951         }
3952         case DVD_REPORT_RPC: {
3953                 struct scsi_report_key_data_rpc *rpc_data;
3954
3955                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3956
3957                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3958                         RKD_RPC_TYPE_SHIFT;
3959                 authinfo->vend_rsts =
3960                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3961                         RKD_RPC_VENDOR_RESET_SHIFT;
3962                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3963                 authinfo->region = rpc_data->region_mask;
3964                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3965                 break;
3966         }
3967         case DVD_INVALIDATE_AGID:
3968                 break;
3969         default:
3970                 /* This should be impossible, since we checked above */
3971                 error = EINVAL;
3972                 goto bailout;
3973                 break; /* NOTREACHED */
3974         }
3975 bailout:
3976         if (databuf != NULL)
3977                 kfree(databuf, M_DEVBUF);
3978
3979         xpt_release_ccb(ccb);
3980
3981         return(error);
3982 }
3983
3984 static int
3985 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3986 {
3987         union ccb *ccb;
3988         u_int8_t *databuf;
3989         int length;
3990         int error;
3991
3992         error = 0;
3993         databuf = NULL;
3994
3995         ccb = cdgetccb(periph, /* priority */ 1);
3996
3997         switch(authinfo->format) {
3998         case DVD_SEND_CHALLENGE: {
3999                 struct scsi_report_key_data_challenge *challenge_data;
4000
4001                 length = sizeof(*challenge_data);
4002
4003                 challenge_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4004
4005                 databuf = (u_int8_t *)challenge_data;
4006
4007                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
4008                             challenge_data->data_len);
4009
4010                 bcopy(authinfo->keychal, challenge_data->challenge_key,
4011                       min(sizeof(authinfo->keychal),
4012                           sizeof(challenge_data->challenge_key)));
4013                 break;
4014         }
4015         case DVD_SEND_KEY2: {
4016                 struct scsi_report_key_data_key1_key2 *key2_data;
4017
4018                 length = sizeof(*key2_data);
4019
4020                 key2_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4021
4022                 databuf = (u_int8_t *)key2_data;
4023
4024                 scsi_ulto2b(length - sizeof(key2_data->data_len),
4025                             key2_data->data_len);
4026
4027                 bcopy(authinfo->keychal, key2_data->key1,
4028                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
4029
4030                 break;
4031         }
4032         case DVD_SEND_RPC: {
4033                 struct scsi_send_key_data_rpc *rpc_data;
4034
4035                 length = sizeof(*rpc_data);
4036
4037                 rpc_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4038
4039                 databuf = (u_int8_t *)rpc_data;
4040
4041                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
4042                             rpc_data->data_len);
4043
4044                 rpc_data->region_code = authinfo->region;
4045                 break;
4046         }
4047         default:
4048                 error = EINVAL;
4049                 goto bailout;
4050                 break; /* NOTREACHED */
4051         }
4052
4053         scsi_send_key(&ccb->csio,
4054                       /* retries */ 1,
4055                       /* cbfcnp */ cddone,
4056                       /* tag_action */ MSG_SIMPLE_Q_TAG,
4057                       /* agid */ authinfo->agid,
4058                       /* key_format */ authinfo->format,
4059                       /* data_ptr */ databuf,
4060                       /* dxfer_len */ length,
4061                       /* sense_len */ SSD_FULL_SIZE,
4062                       /* timeout */ 50000);
4063
4064         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4065                          /*sense_flags*/SF_RETRY_UA);
4066
4067 bailout:
4068
4069         if (databuf != NULL)
4070                 kfree(databuf, M_DEVBUF);
4071
4072         xpt_release_ccb(ccb);
4073
4074         return(error);
4075 }
4076
4077 static int
4078 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4079 {
4080         union ccb *ccb;
4081         u_int8_t *databuf;
4082         u_int32_t address;
4083         int error;
4084         int length;
4085
4086         error = 0;
4087         databuf = NULL;
4088         /* The address is reserved for many of the formats */
4089         address = 0;
4090
4091         ccb = cdgetccb(periph, /* priority */ 1);
4092
4093         switch(dvdstruct->format) {
4094         case DVD_STRUCT_PHYSICAL:
4095                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4096                 break;
4097         case DVD_STRUCT_COPYRIGHT:
4098                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4099                 break;
4100         case DVD_STRUCT_DISCKEY:
4101                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4102                 break;
4103         case DVD_STRUCT_BCA:
4104                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4105                 break;
4106         case DVD_STRUCT_MANUFACT:
4107                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4108                 break;
4109         case DVD_STRUCT_CMI:
4110                 error = ENODEV;
4111                 goto bailout;
4112 #ifdef notyet
4113                 length = sizeof(struct scsi_read_dvd_struct_data_copy_manage);
4114                 address = dvdstruct->address;
4115 #endif
4116                 break; /* NOTREACHED */
4117         case DVD_STRUCT_PROTDISCID:
4118                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4119                 break;
4120         case DVD_STRUCT_DISCKEYBLOCK:
4121                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4122                 break;
4123         case DVD_STRUCT_DDS:
4124                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4125                 break;
4126         case DVD_STRUCT_MEDIUM_STAT:
4127                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4128                 break;
4129         case DVD_STRUCT_SPARE_AREA:
4130                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4131                 break;
4132         case DVD_STRUCT_RMD_LAST:
4133                 error = ENODEV;
4134                 goto bailout;
4135 #ifdef notyet
4136                 length = sizeof(struct scsi_read_dvd_struct_data_rmd_borderout);
4137                 address = dvdstruct->address;
4138 #endif
4139                 break; /* NOTREACHED */
4140         case DVD_STRUCT_RMD_RMA:
4141                 error = ENODEV;
4142                 goto bailout;
4143 #ifdef notyet
4144                 length = sizeof(struct scsi_read_dvd_struct_data_rmd);
4145                 address = dvdstruct->address;
4146 #endif
4147                 break; /* NOTREACHED */
4148         case DVD_STRUCT_PRERECORDED:
4149                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4150                 break;
4151         case DVD_STRUCT_UNIQUEID:
4152                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4153                 break;
4154         case DVD_STRUCT_DCB:
4155                 error = ENODEV;
4156                 goto bailout;
4157 #ifdef notyet
4158                 length = sizeof(struct scsi_read_dvd_struct_data_dcb);
4159                 address = dvdstruct->address;
4160 #endif
4161                 break; /* NOTREACHED */
4162         case DVD_STRUCT_LIST:
4163                 /*
4164                  * This is the maximum allocation length for the READ DVD
4165                  * STRUCTURE command.  There's nothing in the MMC3 spec
4166                  * that indicates a limit in the amount of data that can
4167                  * be returned from this call, other than the limits
4168                  * imposed by the 2-byte length variables.
4169                  */
4170                 length = 65535;
4171                 break;
4172         default:
4173                 error = EINVAL;
4174                 goto bailout;
4175                 break; /* NOTREACHED */
4176         }
4177
4178         if (length != 0) {
4179                 databuf = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4180         } else {
4181                 databuf = NULL;
4182         }
4183
4184         scsi_read_dvd_structure(&ccb->csio,
4185                                 /* retries */ 1,
4186                                 /* cbfcnp */ cddone,
4187                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4188                                 /* lba */ address,
4189                                 /* layer_number */ dvdstruct->layer_num,
4190                                 /* key_format */ dvdstruct->format,
4191                                 /* agid */ dvdstruct->agid,
4192                                 /* data_ptr */ databuf,
4193                                 /* dxfer_len */ length,
4194                                 /* sense_len */ SSD_FULL_SIZE,
4195                                 /* timeout */ 50000);
4196
4197         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4198                          /*sense_flags*/SF_RETRY_UA);
4199
4200         if (error != 0)
4201                 goto bailout;
4202
4203         switch(dvdstruct->format) {
4204         case DVD_STRUCT_PHYSICAL: {
4205                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4206                 struct dvd_layer *outlayer;
4207                 struct scsi_read_dvd_struct_data_physical *phys_data;
4208
4209                 phys_data =
4210                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4211                 inlayer = &phys_data->layer_desc;
4212                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4213
4214                 dvdstruct->length = sizeof(*inlayer);
4215
4216                 outlayer->book_type = (inlayer->book_type_version &
4217                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4218                 outlayer->book_version = (inlayer->book_type_version &
4219                         RDSD_BOOK_VERSION_MASK);
4220                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4221                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4222                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4223                         RDSD_MAX_RATE_MASK);
4224                 outlayer->nlayers = (inlayer->layer_info &
4225                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4226                 outlayer->track_path = (inlayer->layer_info &
4227                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4228                 outlayer->layer_type = (inlayer->layer_info &
4229                         RDSD_LAYER_TYPE_MASK);
4230                 outlayer->linear_density = (inlayer->density &
4231                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4232                 outlayer->track_density = (inlayer->density &
4233                         RDSD_TRACK_DENSITY_MASK);
4234                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4235                         RDSD_BCA_SHIFT;
4236                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4237                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4238                 outlayer->end_sector_l0 =
4239                         scsi_3btoul(inlayer->end_sector_layer0);
4240                 break;
4241         }
4242         case DVD_STRUCT_COPYRIGHT: {
4243                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4244
4245                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4246                         databuf;
4247
4248                 dvdstruct->cpst = copy_data->cps_type;
4249                 dvdstruct->rmi = copy_data->region_info;
4250                 dvdstruct->length = 0;
4251
4252                 break;
4253         }
4254         default:
4255                 /*
4256                  * Tell the user what the overall length is, no matter
4257                  * what we can actually fit in the data buffer.
4258                  */
4259                 dvdstruct->length = length - ccb->csio.resid -
4260                         sizeof(struct scsi_read_dvd_struct_data_header);
4261
4262                 /*
4263                  * But only actually copy out the smaller of what we read
4264                  * in or what the structure can take.
4265                  */
4266                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4267                       dvdstruct->data,
4268                       min(sizeof(dvdstruct->data), dvdstruct->length));
4269                 break;
4270         }
4271 bailout:
4272
4273         if (databuf != NULL)
4274                 kfree(databuf, M_DEVBUF);
4275
4276         xpt_release_ccb(ccb);
4277
4278         return(error);
4279 }
4280
4281 void
4282 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4283                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4284                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4285                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4286                 u_int8_t sense_len, u_int32_t timeout)
4287 {
4288         struct scsi_report_key *scsi_cmd;
4289
4290         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4291         bzero(scsi_cmd, sizeof(*scsi_cmd));
4292         scsi_cmd->opcode = REPORT_KEY;
4293         scsi_ulto4b(lba, scsi_cmd->lba);
4294         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4295         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4296                 (key_format & RK_KF_KEYFORMAT_MASK);
4297
4298         cam_fill_csio(csio,
4299                       retries,
4300                       cbfcnp,
4301                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4302                       tag_action,
4303                       /*data_ptr*/ data_ptr,
4304                       /*dxfer_len*/ dxfer_len,
4305                       sense_len,
4306                       sizeof(*scsi_cmd),
4307                       timeout);
4308 }
4309
4310 void
4311 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4312               void (*cbfcnp)(struct cam_periph *, union ccb *),
4313               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4314               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4315               u_int32_t timeout)
4316 {
4317         struct scsi_send_key *scsi_cmd;
4318
4319         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4320         bzero(scsi_cmd, sizeof(*scsi_cmd));
4321         scsi_cmd->opcode = SEND_KEY;
4322
4323         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4324         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4325                 (key_format & RK_KF_KEYFORMAT_MASK);
4326
4327         cam_fill_csio(csio,
4328                       retries,
4329                       cbfcnp,
4330                       /*flags*/ CAM_DIR_OUT,
4331                       tag_action,
4332                       /*data_ptr*/ data_ptr,
4333                       /*dxfer_len*/ dxfer_len,
4334                       sense_len,
4335                       sizeof(*scsi_cmd),
4336                       timeout);
4337 }
4338
4339
4340 void
4341 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4342                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4343                         u_int8_t tag_action, u_int32_t address,
4344                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4345                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4346                         u_int8_t sense_len, u_int32_t timeout)
4347 {
4348         struct scsi_read_dvd_structure *scsi_cmd;
4349
4350         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4351         bzero(scsi_cmd, sizeof(*scsi_cmd));
4352         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4353
4354         scsi_ulto4b(address, scsi_cmd->address);
4355         scsi_cmd->layer_number = layer_number;
4356         scsi_cmd->format = format;
4357         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4358         /* The AGID is the top two bits of this byte */
4359         scsi_cmd->agid = agid << 6;
4360
4361         cam_fill_csio(csio,
4362                       retries,
4363                       cbfcnp,
4364                       /*flags*/ CAM_DIR_IN,
4365                       tag_action,
4366                       /*data_ptr*/ data_ptr,
4367                       /*dxfer_len*/ dxfer_len,
4368                       sense_len,
4369                       sizeof(*scsi_cmd),
4370                       timeout);
4371 }