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1 /*-
2  * Copyright (c) 1997 Justin T. Gibbs.
3  * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002, 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
28 /*-
29  * Portions of this driver taken from the original FreeBSD cd driver.
30  * Written by Julian Elischer (julian@tfs.com)
31  * for TRW Financial Systems for use under the MACH(2.5) operating system.
32  *
33  * TRW Financial Systems, in accordance with their agreement with Carnegie
34  * Mellon University, makes this software available to CMU to distribute
35  * or use in any manner that they see fit as long as this message is kept with
36  * the software. For this reason TFS also grants any other persons or
37  * organisations permission to use or modify this software.
38  *
39  * TFS supplies this software to be publicly redistributed
40  * on the understanding that TFS is not responsible for the correct
41  * functioning of this software in any circumstances.
42  *
43  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
44  *
45  *      from: cd.c,v 1.83 1997/05/04 15:24:22 joerg Exp $
46  */
47
48 #include <sys/cdefs.h>
49 __FBSDID("$FreeBSD$");
50
51 #include "opt_cd.h"
52
53 #include <sys/param.h>
54 #include <sys/systm.h>
55 #include <sys/kernel.h>
56 #include <sys/bio.h>
57 #include <sys/conf.h>
58 #include <sys/disk.h>
59 #include <sys/malloc.h>
60 #include <sys/cdio.h>
61 #include <sys/cdrio.h>
62 #include <sys/dvdio.h>
63 #include <sys/devicestat.h>
64 #include <sys/sysctl.h>
65 #include <sys/taskqueue.h>
66 #include <geom/geom_disk.h>
67
68 #include <cam/cam.h>
69 #include <cam/cam_ccb.h>
70 #include <cam/cam_periph.h>
71 #include <cam/cam_xpt_periph.h>
72 #include <cam/cam_queue.h>
73
74 #include <cam/scsi/scsi_message.h>
75 #include <cam/scsi/scsi_da.h>
76 #include <cam/scsi/scsi_cd.h>
77
78 #define LEADOUT         0xaa            /* leadout toc entry */
79
80 struct cd_params {
81         u_int32_t blksize;
82         u_long    disksize;
83 };
84
85 typedef enum {
86         CD_Q_NONE               = 0x00,
87         CD_Q_NO_TOUCH           = 0x01,
88         CD_Q_BCD_TRACKS         = 0x02,
89         CD_Q_NO_CHANGER         = 0x04,
90         CD_Q_CHANGER            = 0x08,
91         CD_Q_10_BYTE_ONLY       = 0x10
92 } cd_quirks;
93
94 typedef enum {
95         CD_FLAG_INVALID         = 0x0001,
96         CD_FLAG_NEW_DISC        = 0x0002,
97         CD_FLAG_DISC_LOCKED     = 0x0004,
98         CD_FLAG_DISC_REMOVABLE  = 0x0008,
99         CD_FLAG_TAGGED_QUEUING  = 0x0010,
100         CD_FLAG_CHANGER         = 0x0040,
101         CD_FLAG_ACTIVE          = 0x0080,
102         CD_FLAG_SCHED_ON_COMP   = 0x0100,
103         CD_FLAG_RETRY_UA        = 0x0200,
104         CD_FLAG_VALID_MEDIA     = 0x0400,
105         CD_FLAG_VALID_TOC       = 0x0800,
106         CD_FLAG_SCTX_INIT       = 0x1000
107 } cd_flags;
108
109 typedef enum {
110         CD_CCB_PROBE            = 0x01,
111         CD_CCB_BUFFER_IO        = 0x02,
112         CD_CCB_WAITING          = 0x03,
113         CD_CCB_TYPE_MASK        = 0x0F,
114         CD_CCB_RETRY_UA         = 0x10
115 } cd_ccb_state;
116
117 typedef enum {
118         CHANGER_TIMEOUT_SCHED           = 0x01,
119         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
120         CHANGER_MANUAL_CALL             = 0x04,
121         CHANGER_NEED_TIMEOUT            = 0x08
122 } cd_changer_flags;
123
124 #define ccb_state ppriv_field0
125 #define ccb_bp ppriv_ptr1
126
127 struct cd_tocdata {
128         struct ioc_toc_header header;
129         struct cd_toc_entry entries[100];
130 };
131
132 struct cd_toc_single {
133         struct ioc_toc_header header;
134         struct cd_toc_entry entry;
135 };
136
137 typedef enum {
138         CD_STATE_PROBE,
139         CD_STATE_NORMAL
140 } cd_state;
141
142 struct cd_softc {
143         cam_pinfo               pinfo;
144         cd_state                state;
145         volatile cd_flags       flags;
146         struct bio_queue_head   bio_queue;
147         LIST_HEAD(, ccb_hdr)    pending_ccbs;
148         struct cd_params        params;
149         union ccb               saved_ccb;
150         cd_quirks               quirks;
151         STAILQ_ENTRY(cd_softc)  changer_links;
152         struct cdchanger        *changer;
153         int                     bufs_left;
154         struct cam_periph       *periph;
155         int                     minimum_command_size;
156         int                     outstanding_cmds;
157         struct task             sysctl_task;
158         struct sysctl_ctx_list  sysctl_ctx;
159         struct sysctl_oid       *sysctl_tree;
160         STAILQ_HEAD(, cd_mode_params)   mode_queue;
161         struct cd_tocdata       toc;
162         struct disk             *disk;
163 };
164
165 struct cd_page_sizes {
166         int page;
167         int page_size;
168 };
169
170 static struct cd_page_sizes cd_page_size_table[] =
171 {
172         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
173 };
174
175 struct cd_quirk_entry {
176         struct scsi_inquiry_pattern inq_pat;
177         cd_quirks quirks;
178 };
179
180 /*
181  * The changer quirk entries aren't strictly necessary.  Basically, what
182  * they do is tell cdregister() up front that a device is a changer.
183  * Otherwise, it will figure that fact out once it sees a LUN on the device
184  * that is greater than 0.  If it is known up front that a device is a changer,
185  * all I/O to the device will go through the changer scheduling routines, as
186  * opposed to the "normal" CD code.
187  *
188  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
189  * your device hangs when it gets a 10 byte command.  Adding a quirk just
190  * to get rid of the informative diagnostic message is not acceptable.  All
191  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
192  * referenced in a comment along with the quirk) , and must be approved by
193  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
194  * be removed until the submitter can explain why they are needed.
195  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
196  * when the CAM_NEW_TRAN_CODE work is done.
197  */
198 static struct cd_quirk_entry cd_quirk_table[] =
199 {
200         {
201                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
202                  /*quirks*/ CD_Q_CHANGER
203         },
204         {
205                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
206                   "*"}, /* quirks */ CD_Q_CHANGER
207         },
208         {
209                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
210                  /* quirks */ CD_Q_CHANGER
211         },
212         {
213                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
214                 /* quirks */ CD_Q_BCD_TRACKS
215         }
216 };
217
218 static  disk_open_t     cdopen;
219 static  disk_close_t    cdclose;
220 static  disk_ioctl_t    cdioctl;
221 static  disk_strategy_t cdstrategy;
222
223 static  periph_init_t   cdinit;
224 static  periph_ctor_t   cdregister;
225 static  periph_dtor_t   cdcleanup;
226 static  periph_start_t  cdstart;
227 static  periph_oninv_t  cdoninvalidate;
228 static  void            cdasync(void *callback_arg, u_int32_t code,
229                                 struct cam_path *path, void *arg);
230 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
231 static  void            cdshorttimeout(void *arg);
232 static  void            cdschedule(struct cam_periph *periph, int priority);
233 static  void            cdrunchangerqueue(void *arg);
234 static  void            cdchangerschedule(struct cd_softc *softc);
235 static  int             cdrunccb(union ccb *ccb,
236                                  int (*error_routine)(union ccb *ccb,
237                                                       u_int32_t cam_flags,
238                                                       u_int32_t sense_flags),
239                                  u_int32_t cam_flags, u_int32_t sense_flags);
240 static  union ccb       *cdgetccb(struct cam_periph *periph,
241                                   u_int32_t priority);
242 static  void            cddone(struct cam_periph *periph,
243                                union ccb *start_ccb);
244 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
245 static  int             cdgetpagesize(int page_num);
246 static  void            cdprevent(struct cam_periph *periph, int action);
247 static  int             cdcheckmedia(struct cam_periph *periph);
248 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
249 static  int             cd6byteworkaround(union ccb *ccb);
250 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
251                                 u_int32_t sense_flags);
252 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode, 
253                                   u_int32_t start, u_int8_t *data, 
254                                   u_int32_t len, u_int32_t sense_flags);
255 static  int             cdgetmode(struct cam_periph *periph, 
256                                   struct cd_mode_params *data, u_int32_t page);
257 static  int             cdsetmode(struct cam_periph *periph,
258                                   struct cd_mode_params *data);
259 static  int             cdplay(struct cam_periph *periph, u_int32_t blk, 
260                                u_int32_t len);
261 static  int             cdreadsubchannel(struct cam_periph *periph, 
262                                          u_int32_t mode, u_int32_t format, 
263                                          int track, 
264                                          struct cd_sub_channel_info *data, 
265                                          u_int32_t len);
266 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm, 
267                                   u_int32_t starts, u_int32_t startf, 
268                                   u_int32_t endm, u_int32_t ends, 
269                                   u_int32_t endf);
270 static  int             cdplaytracks(struct cam_periph *periph, 
271                                      u_int32_t strack, u_int32_t sindex,
272                                      u_int32_t etrack, u_int32_t eindex);
273 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
274 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
275 static  int             cdstartunit(struct cam_periph *periph, int load);
276 static  int             cdsetspeed(struct cam_periph *periph,
277                                    u_int32_t rdspeed, u_int32_t wrspeed);
278 static  int             cdreportkey(struct cam_periph *periph,
279                                     struct dvd_authinfo *authinfo);
280 static  int             cdsendkey(struct cam_periph *periph,
281                                   struct dvd_authinfo *authinfo);
282 static  int             cdreaddvdstructure(struct cam_periph *periph,
283                                            struct dvd_struct *dvdstruct);
284
285 static struct periph_driver cddriver =
286 {
287         cdinit, "cd",
288         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
289 };
290
291 PERIPHDRIVER_DECLARE(cd, cddriver);
292
293
294 static int num_changers;
295
296 #ifndef CHANGER_MIN_BUSY_SECONDS
297 #define CHANGER_MIN_BUSY_SECONDS        5
298 #endif
299 #ifndef CHANGER_MAX_BUSY_SECONDS
300 #define CHANGER_MAX_BUSY_SECONDS        15
301 #endif
302
303 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
304 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
305
306 SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
307 SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0, "CD Changer");
308 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
309            &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
310 TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds);
311 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
312            &changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
313 TUNABLE_INT("kern.cam.cd.changer.max_busy_seconds", &changer_max_busy_seconds);
314
315 struct cdchanger {
316         path_id_t                        path_id;
317         target_id_t                      target_id;
318         int                              num_devices;
319         struct camq                      devq;
320         struct timeval                   start_time;
321         struct cd_softc                  *cur_device;
322         struct callout_handle            short_handle;
323         struct callout_handle            long_handle;
324         volatile cd_changer_flags        flags;
325         STAILQ_ENTRY(cdchanger)          changer_links;
326         STAILQ_HEAD(chdevlist, cd_softc) chluns;
327 };
328
329 static STAILQ_HEAD(changerlist, cdchanger) changerq;
330
331
332 static void
333 cdinit(void)
334 {
335         cam_status status;
336         struct cam_path *path;
337
338         /*
339          * Install a global async callback.  This callback will
340          * receive async callbacks like "new device found".
341          */
342         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
343                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
344
345         if (status == CAM_REQ_CMP) {
346                 struct ccb_setasync csa;
347
348                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
349                 csa.ccb_h.func_code = XPT_SASYNC_CB;
350                 csa.event_enable = AC_FOUND_DEVICE;
351                 csa.callback = cdasync;
352                 csa.callback_arg = NULL;
353                 xpt_action((union ccb *)&csa);
354                 status = csa.ccb_h.status;
355                 xpt_free_path(path);
356         }
357
358         if (status != CAM_REQ_CMP) {
359                 printf("cd: Failed to attach master async callback "
360                        "due to status 0x%x!\n", status);
361         }
362 }
363
364 static void
365 cdoninvalidate(struct cam_periph *periph)
366 {
367         int s;
368         struct cd_softc *softc;
369         struct ccb_setasync csa;
370
371         softc = (struct cd_softc *)periph->softc;
372
373         /*
374          * De-register any async callbacks.
375          */
376         xpt_setup_ccb(&csa.ccb_h, periph->path,
377                       /* priority */ 5);
378         csa.ccb_h.func_code = XPT_SASYNC_CB;
379         csa.event_enable = 0;
380         csa.callback = cdasync;
381         csa.callback_arg = periph;
382         xpt_action((union ccb *)&csa);
383
384         softc->flags |= CD_FLAG_INVALID;
385
386         /*
387          * Although the oninvalidate() routines are always called at
388          * splsoftcam, we need to be at splbio() here to keep the buffer
389          * queue from being modified while we traverse it.
390          */
391         s = splbio();
392
393         /*
394          * Return all queued I/O with ENXIO.
395          * XXX Handle any transactions queued to the card
396          *     with XPT_ABORT_CCB.
397          */
398         bioq_flush(&softc->bio_queue, NULL, ENXIO);
399         splx(s);
400
401         /*
402          * If this device is part of a changer, and it was scheduled
403          * to run, remove it from the run queue since we just nuked
404          * all of its scheduled I/O.
405          */
406         if ((softc->flags & CD_FLAG_CHANGER)
407          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
408                 camq_remove(&softc->changer->devq, softc->pinfo.index);
409
410         xpt_print_path(periph->path);
411         printf("lost device\n");
412 }
413
414 static void
415 cdcleanup(struct cam_periph *periph)
416 {
417         struct cd_softc *softc;
418         int s;
419
420         softc = (struct cd_softc *)periph->softc;
421
422         xpt_print_path(periph->path);
423         printf("removing device entry\n");
424
425         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
426             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
427                 xpt_print_path(periph->path);
428                 printf("can't remove sysctl context\n");
429         }
430
431         s = splsoftcam();
432         /*
433          * In the queued, non-active case, the device in question
434          * has already been removed from the changer run queue.  Since this
435          * device is active, we need to de-activate it, and schedule
436          * another device to run.  (if there is another one to run)
437          */
438         if ((softc->flags & CD_FLAG_CHANGER)
439          && (softc->flags & CD_FLAG_ACTIVE)) {
440
441                 /*
442                  * The purpose of the short timeout is soley to determine
443                  * whether the current device has finished or not.  Well,
444                  * since we're removing the active device, we know that it
445                  * is finished.  So, get rid of the short timeout.
446                  * Otherwise, if we're in the time period before the short
447                  * timeout fires, and there are no other devices in the
448                  * queue to run, there won't be any other device put in the
449                  * active slot.  i.e., when we call cdrunchangerqueue()
450                  * below, it won't do anything.  Then, when the short
451                  * timeout fires, it'll look at the "current device", which
452                  * we are free below, and possibly panic the kernel on a
453                  * bogus pointer reference.
454                  *
455                  * The long timeout doesn't really matter, since we
456                  * decrement the qfrozen_cnt to indicate that there is
457                  * nothing in the active slot now.  Therefore, there won't
458                  * be any bogus pointer references there.
459                  */
460                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
461                         untimeout(cdshorttimeout, softc->changer,
462                                   softc->changer->short_handle);
463                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
464                 }
465                 softc->changer->devq.qfrozen_cnt--;
466                 softc->changer->flags |= CHANGER_MANUAL_CALL;
467                 cdrunchangerqueue(softc->changer);
468         }
469
470         /*
471          * If we're removing the last device on the changer, go ahead and
472          * remove the changer device structure.
473          */
474         if ((softc->flags & CD_FLAG_CHANGER)
475          && (--softc->changer->num_devices == 0)) {
476
477                 /*
478                  * Theoretically, there shouldn't be any timeouts left, but
479                  * I'm not completely sure that that will be the case.  So,
480                  * it won't hurt to check and see if there are any left.
481                  */
482                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
483                         untimeout(cdrunchangerqueue, softc->changer,
484                                   softc->changer->long_handle);
485                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
486                 }
487
488                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
489                         untimeout(cdshorttimeout, softc->changer,
490                                   softc->changer->short_handle);
491                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
492                 }
493
494                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
495                               changer_links);
496                 xpt_print_path(periph->path);
497                 printf("removing changer entry\n");
498                 free(softc->changer, M_DEVBUF);
499                 num_changers--;
500         }
501         disk_destroy(softc->disk);
502         free(softc, M_DEVBUF);
503         splx(s);
504 }
505
506 static void
507 cdasync(void *callback_arg, u_int32_t code,
508         struct cam_path *path, void *arg)
509 {
510         struct cam_periph *periph;
511
512         periph = (struct cam_periph *)callback_arg;
513         switch (code) {
514         case AC_FOUND_DEVICE:
515         {
516                 struct ccb_getdev *cgd;
517                 cam_status status;
518
519                 cgd = (struct ccb_getdev *)arg;
520                 if (cgd == NULL)
521                         break;
522
523                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
524                     && SID_TYPE(&cgd->inq_data) != T_WORM)
525                         break;
526
527                 /*
528                  * Allocate a peripheral instance for
529                  * this device and start the probe
530                  * process.
531                  */
532                 status = cam_periph_alloc(cdregister, cdoninvalidate,
533                                           cdcleanup, cdstart,
534                                           "cd", CAM_PERIPH_BIO,
535                                           cgd->ccb_h.path, cdasync,
536                                           AC_FOUND_DEVICE, cgd);
537
538                 if (status != CAM_REQ_CMP
539                  && status != CAM_REQ_INPROG)
540                         printf("cdasync: Unable to attach new device "
541                                "due to status 0x%x\n", status);
542
543                 break;
544         }
545         case AC_SENT_BDR:
546         case AC_BUS_RESET:
547         {
548                 struct cd_softc *softc;
549                 struct ccb_hdr *ccbh;
550                 int s;
551
552                 softc = (struct cd_softc *)periph->softc;
553                 s = splsoftcam();
554                 /*
555                  * Don't fail on the expected unit attention
556                  * that will occur.
557                  */
558                 softc->flags |= CD_FLAG_RETRY_UA;
559                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
560                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
561                 splx(s);
562                 /* FALLTHROUGH */
563         }
564         default:
565                 cam_periph_async(periph, code, path, arg);
566                 break;
567         }
568 }
569
570 static void
571 cdsysctlinit(void *context, int pending)
572 {
573         struct cam_periph *periph;
574         struct cd_softc *softc;
575         char tmpstr[80], tmpstr2[80];
576
577         periph = (struct cam_periph *)context;
578         softc = (struct cd_softc *)periph->softc;
579
580         snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
581         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
582
583         mtx_lock(&Giant);
584
585         sysctl_ctx_init(&softc->sysctl_ctx);
586         softc->flags |= CD_FLAG_SCTX_INIT;
587         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
588                 SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
589                 tmpstr2, CTLFLAG_RD, 0, tmpstr);
590
591         if (softc->sysctl_tree == NULL) {
592                 printf("cdsysctlinit: unable to allocate sysctl tree\n");
593                 return;
594         }
595
596         /*
597          * Now register the sysctl handler, so the user can the value on
598          * the fly.
599          */
600         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
601                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
602                 &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
603                 "Minimum CDB size");
604
605         mtx_unlock(&Giant);
606 }
607
608 /*
609  * We have a handler function for this so we can check the values when the
610  * user sets them, instead of every time we look at them.
611  */
612 static int
613 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
614 {
615         int error, value;
616
617         value = *(int *)arg1;
618
619         error = sysctl_handle_int(oidp, &value, 0, req);
620
621         if ((error != 0)
622          || (req->newptr == NULL))
623                 return (error);
624
625         /*
626          * The only real values we can have here are 6 or 10.  I don't
627          * really forsee having 12 be an option at any time in the future.
628          * So if the user sets something less than or equal to 6, we'll set
629          * it to 6.  If he sets something greater than 6, we'll set it to 10.
630          *
631          * I suppose we could just return an error here for the wrong values,
632          * but I don't think it's necessary to do so, as long as we can
633          * determine the user's intent without too much trouble.
634          */
635         if (value < 6)
636                 value = 6;
637         else if (value > 6)
638                 value = 10;
639
640         *(int *)arg1 = value;
641
642         return (0);
643 }
644
645 static cam_status
646 cdregister(struct cam_periph *periph, void *arg)
647 {
648         struct cd_softc *softc;
649         struct ccb_setasync csa;
650         struct ccb_pathinq cpi;
651         struct ccb_getdev *cgd;
652         char tmpstr[80];
653         caddr_t match;
654
655         cgd = (struct ccb_getdev *)arg;
656         if (periph == NULL) {
657                 printf("cdregister: periph was NULL!!\n");
658                 return(CAM_REQ_CMP_ERR);
659         }
660         if (cgd == NULL) {
661                 printf("cdregister: no getdev CCB, can't register device\n");
662                 return(CAM_REQ_CMP_ERR);
663         }
664
665         softc = (struct cd_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
666
667         if (softc == NULL) {
668                 printf("cdregister: Unable to probe new device. "
669                        "Unable to allocate softc\n");                           
670                 return(CAM_REQ_CMP_ERR);
671         }
672
673         bzero(softc, sizeof(*softc));
674         LIST_INIT(&softc->pending_ccbs);
675         STAILQ_INIT(&softc->mode_queue);
676         softc->state = CD_STATE_PROBE;
677         bioq_init(&softc->bio_queue);
678         if (SID_IS_REMOVABLE(&cgd->inq_data))
679                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
680         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
681                 softc->flags |= CD_FLAG_TAGGED_QUEUING;
682
683         periph->softc = softc;
684         softc->periph = periph;
685
686         /*
687          * See if this device has any quirks.
688          */
689         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
690                                (caddr_t)cd_quirk_table,
691                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
692                                sizeof(*cd_quirk_table), scsi_inquiry_match);
693
694         if (match != NULL)
695                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
696         else
697                 softc->quirks = CD_Q_NONE;
698
699         /* Check if the SIM does not want 6 byte commands */
700         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
701         cpi.ccb_h.func_code = XPT_PATH_INQ;
702         xpt_action((union ccb *)&cpi);
703         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
704                 softc->quirks |= CD_Q_10_BYTE_ONLY;
705
706         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
707
708         /* The default is 6 byte commands, unless quirked otherwise */
709         if (softc->quirks & CD_Q_10_BYTE_ONLY)
710                 softc->minimum_command_size = 10;
711         else
712                 softc->minimum_command_size = 6;
713
714         /*
715          * Load the user's default, if any.
716          */
717         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
718                  periph->unit_number);
719         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
720
721         /* 6 and 10 are the only permissible values here. */
722         if (softc->minimum_command_size < 6)
723                 softc->minimum_command_size = 6;
724         else if (softc->minimum_command_size > 6)
725                 softc->minimum_command_size = 10;
726
727         /*
728          * We need to register the statistics structure for this device,
729          * but we don't have the blocksize yet for it.  So, we register
730          * the structure and indicate that we don't have the blocksize
731          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
732          * the device type here to be CDROM, rather than just ORing in
733          * the device type.  This is because this driver can attach to either
734          * CDROM or WORM devices, and we want this peripheral driver to
735          * show up in the devstat list as a CD peripheral driver, not a
736          * WORM peripheral driver.  WORM drives will also have the WORM
737          * driver attached to them.
738          */
739         softc->disk = disk_alloc();
740         softc->disk->d_devstat = devstat_new_entry("cd", 
741                           periph->unit_number, 0,
742                           DEVSTAT_BS_UNAVAILABLE,
743                           DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_SCSI,
744                           DEVSTAT_PRIORITY_CD);
745         softc->disk->d_open = cdopen;
746         softc->disk->d_close = cdclose;
747         softc->disk->d_strategy = cdstrategy;
748         softc->disk->d_ioctl = cdioctl;
749         softc->disk->d_name = "cd";
750         softc->disk->d_unit = periph->unit_number;
751         softc->disk->d_drv1 = periph;
752         softc->disk->d_flags = DISKFLAG_NEEDSGIANT;
753         disk_create(softc->disk, DISK_VERSION);
754
755         /*
756          * Add an async callback so that we get
757          * notified if this device goes away.
758          */
759         xpt_setup_ccb(&csa.ccb_h, periph->path,
760                       /* priority */ 5);
761         csa.ccb_h.func_code = XPT_SASYNC_CB;
762         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
763         csa.callback = cdasync;
764         csa.callback_arg = periph;
765         xpt_action((union ccb *)&csa);
766
767         /*
768          * If the target lun is greater than 0, we most likely have a CD
769          * changer device.  Check the quirk entries as well, though, just
770          * in case someone has a CD tower with one lun per drive or
771          * something like that.  Also, if we know up front that a
772          * particular device is a changer, we can mark it as such starting
773          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
774          * a quirk entry to define something as a changer, however.
775          */
776         if (((cgd->ccb_h.target_lun > 0)
777           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
778          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
779                 struct cdchanger *nchanger;
780                 struct cam_periph *nperiph;
781                 struct cam_path *path;
782                 cam_status status;
783                 int found;
784
785                 /* Set the changer flag in the current device's softc */
786                 softc->flags |= CD_FLAG_CHANGER;
787
788                 if (num_changers == 0)
789                         STAILQ_INIT(&changerq);
790
791                 /*
792                  * Now, look around for an existing changer device with the
793                  * same path and target ID as the current device.
794                  */
795                 for (found = 0,
796                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
797                      nchanger != NULL;
798                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
799                         if ((nchanger->path_id == cgd->ccb_h.path_id) 
800                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
801                                 found = 1;
802                                 break;
803                         }
804                 }
805
806                 /*
807                  * If we found a matching entry, just add this device to
808                  * the list of devices on this changer.
809                  */
810                 if (found == 1) {
811                         struct chdevlist *chlunhead;
812
813                         chlunhead = &nchanger->chluns;
814
815                         /*
816                          * XXX KDM look at consolidating this code with the
817                          * code below in a separate function.
818                          */
819
820                         /*
821                          * Create a path with lun id 0, and see if we can
822                          * find a matching device
823                          */
824                         status = xpt_create_path(&path, /*periph*/ periph,
825                                                  cgd->ccb_h.path_id,
826                                                  cgd->ccb_h.target_id, 0);
827
828                         if ((status == CAM_REQ_CMP)
829                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
830                                 struct cd_softc *nsoftc;
831
832                                 nsoftc = (struct cd_softc *)nperiph->softc;
833
834                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
835                                         nsoftc->flags |= CD_FLAG_CHANGER;
836                                         nchanger->num_devices++;
837                                         if (camq_resize(&nchanger->devq,
838                                            nchanger->num_devices)!=CAM_REQ_CMP){
839                                                 printf("cdregister: "
840                                                        "camq_resize "
841                                                        "failed, changer "
842                                                        "support may "
843                                                        "be messed up\n");
844                                         }
845                                         nsoftc->changer = nchanger;
846                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
847
848                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
849                                                           nsoftc,changer_links);
850                                 }
851                                 xpt_free_path(path);
852                         } else if (status == CAM_REQ_CMP)
853                                 xpt_free_path(path);
854                         else {
855                                 printf("cdregister: unable to allocate path\n"
856                                        "cdregister: changer support may be "
857                                        "broken\n");
858                         }
859
860                         nchanger->num_devices++;
861
862                         softc->changer = nchanger;
863                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
864
865                         if (camq_resize(&nchanger->devq,
866                             nchanger->num_devices) != CAM_REQ_CMP) {
867                                 printf("cdregister: camq_resize "
868                                        "failed, changer support may "
869                                        "be messed up\n");
870                         }
871
872                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
873                 }
874                 /*
875                  * In this case, we don't already have an entry for this
876                  * particular changer, so we need to create one, add it to
877                  * the queue, and queue this device on the list for this
878                  * changer.  Before we queue this device, however, we need
879                  * to search for lun id 0 on this target, and add it to the
880                  * queue first, if it exists.  (and if it hasn't already
881                  * been marked as part of the changer.)
882                  */
883                 else {
884                         nchanger = malloc(sizeof(struct cdchanger),
885                                 M_DEVBUF, M_NOWAIT);
886
887                         if (nchanger == NULL) {
888                                 softc->flags &= ~CD_FLAG_CHANGER;
889                                 printf("cdregister: unable to malloc "
890                                        "changer structure\ncdregister: "
891                                        "changer support disabled\n");
892
893                                 /*
894                                  * Yes, gotos can be gross but in this case
895                                  * I think it's justified..
896                                  */
897                                 goto cdregisterexit;
898                         }
899
900                         /* zero the structure */
901                         bzero(nchanger, sizeof(struct cdchanger));
902
903                         if (camq_init(&nchanger->devq, 1) != 0) {
904                                 softc->flags &= ~CD_FLAG_CHANGER;
905                                 printf("cdregister: changer support "
906                                        "disabled\n");
907                                 goto cdregisterexit;
908                         }
909
910                         num_changers++;
911
912                         nchanger->path_id = cgd->ccb_h.path_id;
913                         nchanger->target_id = cgd->ccb_h.target_id;
914
915                         /* this is superfluous, but it makes things clearer */
916                         nchanger->num_devices = 0;
917
918                         STAILQ_INIT(&nchanger->chluns);
919
920                         STAILQ_INSERT_TAIL(&changerq, nchanger,
921                                            changer_links);
922                         
923                         /*
924                          * Create a path with lun id 0, and see if we can
925                          * find a matching device
926                          */
927                         status = xpt_create_path(&path, /*periph*/ periph,
928                                                  cgd->ccb_h.path_id,
929                                                  cgd->ccb_h.target_id, 0);
930
931                         /*
932                          * If we were able to allocate the path, and if we
933                          * find a matching device and it isn't already
934                          * marked as part of a changer, then we add it to
935                          * the current changer.
936                          */
937                         if ((status == CAM_REQ_CMP)
938                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
939                          && ((((struct cd_softc *)periph->softc)->flags &
940                                CD_FLAG_CHANGER) == 0)) {
941                                 struct cd_softc *nsoftc;
942
943                                 nsoftc = (struct cd_softc *)nperiph->softc;
944
945                                 nsoftc->flags |= CD_FLAG_CHANGER;
946                                 nchanger->num_devices++;
947                                 if (camq_resize(&nchanger->devq,
948                                     nchanger->num_devices) != CAM_REQ_CMP) {
949                                         printf("cdregister: camq_resize "
950                                                "failed, changer support may "
951                                                "be messed up\n");
952                                 }
953                                 nsoftc->changer = nchanger;
954                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
955
956                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
957                                                    nsoftc, changer_links);
958                                 xpt_free_path(path);
959                         } else if (status == CAM_REQ_CMP)
960                                 xpt_free_path(path);
961                         else {
962                                 printf("cdregister: unable to allocate path\n"
963                                        "cdregister: changer support may be "
964                                        "broken\n");
965                         }
966
967                         softc->changer = nchanger;
968                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
969                         nchanger->num_devices++;
970                         if (camq_resize(&nchanger->devq,
971                             nchanger->num_devices) != CAM_REQ_CMP) {
972                                 printf("cdregister: camq_resize "
973                                        "failed, changer support may "
974                                        "be messed up\n");
975                         }
976                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
977                                            changer_links);
978                 }
979         }
980
981 cdregisterexit:
982
983         /* Lock this peripheral until we are setup */
984         /* Can't block */
985         cam_periph_lock(periph, PRIBIO); 
986
987         if ((softc->flags & CD_FLAG_CHANGER) == 0)
988                 xpt_schedule(periph, /*priority*/5);
989         else
990                 cdschedule(periph, /*priority*/ 5);
991
992         return(CAM_REQ_CMP);
993 }
994
995 static int
996 cdopen(struct disk *dp)
997 {
998         struct cam_periph *periph;
999         struct cd_softc *softc;
1000         int error;
1001         int s;
1002
1003         periph = (struct cam_periph *)dp->d_drv1;
1004         if (periph == NULL)
1005                 return (ENXIO);
1006
1007         softc = (struct cd_softc *)periph->softc;
1008
1009         /*
1010          * Grab splsoftcam and hold it until we lock the peripheral.
1011          */
1012         s = splsoftcam();
1013         if (softc->flags & CD_FLAG_INVALID) {
1014                 splx(s);
1015                 return(ENXIO);
1016         }
1017
1018         if ((error = cam_periph_lock(periph, PRIBIO | PCATCH)) != 0) {
1019                 splx(s);
1020                 return (error);
1021         }
1022
1023         splx(s);
1024
1025         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1026                 return(ENXIO);
1027
1028         /*
1029          * Check for media, and set the appropriate flags.  We don't bail
1030          * if we don't have media, but then we don't allow anything but the
1031          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1032          */
1033         cdcheckmedia(periph);
1034
1035         cam_periph_unlock(periph);
1036
1037         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1038
1039         return (error);
1040 }
1041
1042 static int
1043 cdclose(struct disk *dp)
1044 {
1045         struct  cam_periph *periph;
1046         struct  cd_softc *softc;
1047         int     error;
1048
1049         periph = (struct cam_periph *)dp->d_drv1;
1050         if (periph == NULL)
1051                 return (ENXIO); 
1052
1053         softc = (struct cd_softc *)periph->softc;
1054
1055         if ((error = cam_periph_lock(periph, PRIBIO)) != 0)
1056                 return (error);
1057
1058         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1059                 cdprevent(periph, PR_ALLOW);
1060
1061         /*
1062          * Since we're closing this CD, mark the blocksize as unavailable.
1063          * It will be marked as available when the CD is opened again.
1064          */
1065         softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
1066
1067         /*
1068          * We'll check the media and toc again at the next open().
1069          */
1070         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
1071
1072         cam_periph_unlock(periph);
1073         cam_periph_release(periph);
1074
1075         return (0);
1076 }
1077
1078 static void
1079 cdshorttimeout(void *arg)
1080 {
1081         struct cdchanger *changer;
1082         int s;
1083
1084         s = splsoftcam();
1085
1086         changer = (struct cdchanger *)arg;
1087
1088         /* Always clear the short timeout flag, since that's what we're in */
1089         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1090
1091         /*
1092          * Check to see if there is any more pending or outstanding I/O for
1093          * this device.  If not, move it out of the active slot.
1094          */
1095         if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
1096          && (changer->cur_device->outstanding_cmds == 0)) {
1097                 changer->flags |= CHANGER_MANUAL_CALL;
1098                 cdrunchangerqueue(changer);
1099         }
1100
1101         splx(s);
1102 }
1103
1104 /*
1105  * This is a wrapper for xpt_schedule.  It only applies to changers.
1106  */
1107 static void
1108 cdschedule(struct cam_periph *periph, int priority)
1109 {
1110         struct cd_softc *softc;
1111         int s;
1112
1113         s = splsoftcam();
1114
1115         softc = (struct cd_softc *)periph->softc;
1116
1117         /*
1118          * If this device isn't currently queued, and if it isn't
1119          * the active device, then we queue this device and run the
1120          * changer queue if there is no timeout scheduled to do it.
1121          * If this device is the active device, just schedule it
1122          * to run again.  If this device is queued, there should be
1123          * a timeout in place already that will make sure it runs.
1124          */
1125         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX) 
1126          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1127                 /*
1128                  * We don't do anything with the priority here.
1129                  * This is strictly a fifo queue.
1130                  */
1131                 softc->pinfo.priority = 1;
1132                 softc->pinfo.generation = ++softc->changer->devq.generation;
1133                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1134
1135                 /*
1136                  * Since we just put a device in the changer queue,
1137                  * check and see if there is a timeout scheduled for
1138                  * this changer.  If so, let the timeout handle
1139                  * switching this device into the active slot.  If
1140                  * not, manually call the timeout routine to
1141                  * bootstrap things.
1142                  */
1143                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1144                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1145                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1146                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1147                         cdrunchangerqueue(softc->changer);
1148                 }
1149         } else if ((softc->flags & CD_FLAG_ACTIVE)
1150                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0))
1151                 xpt_schedule(periph, priority);
1152
1153         splx(s);
1154
1155 }
1156
1157 static void
1158 cdrunchangerqueue(void *arg)
1159 {
1160         struct cd_softc *softc;
1161         struct cdchanger *changer;
1162         int called_from_timeout;
1163         int s;
1164
1165         s = splsoftcam();
1166
1167         changer = (struct cdchanger *)arg;
1168
1169         /*
1170          * If we have NOT been called from cdstrategy() or cddone(), and
1171          * instead from a timeout routine, go ahead and clear the
1172          * timeout flag.
1173          */
1174         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1175                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1176                 called_from_timeout = 1;
1177         } else
1178                 called_from_timeout = 0;
1179
1180         /* Always clear the manual call flag */
1181         changer->flags &= ~CHANGER_MANUAL_CALL;
1182
1183         /* nothing to do if the queue is empty */
1184         if (changer->devq.entries <= 0) {
1185                 splx(s);
1186                 return;
1187         }
1188
1189         /*
1190          * If the changer queue is frozen, that means we have an active
1191          * device.
1192          */
1193         if (changer->devq.qfrozen_cnt > 0) {
1194
1195                 if (changer->cur_device->outstanding_cmds > 0) {
1196                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1197                         changer->cur_device->bufs_left = 
1198                                 changer->cur_device->outstanding_cmds;
1199                         if (called_from_timeout) {
1200                                 changer->long_handle =
1201                                         timeout(cdrunchangerqueue, changer,
1202                                         changer_max_busy_seconds * hz);
1203                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1204                         }
1205                         splx(s);
1206                         return;
1207                 }
1208
1209                 /*
1210                  * We always need to reset the frozen count and clear the
1211                  * active flag.
1212                  */
1213                 changer->devq.qfrozen_cnt--;
1214                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1215                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1216
1217                 /*
1218                  * Check to see whether the current device has any I/O left
1219                  * to do.  If so, requeue it at the end of the queue.  If
1220                  * not, there is no need to requeue it.
1221                  */
1222                 if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
1223
1224                         changer->cur_device->pinfo.generation =
1225                                 ++changer->devq.generation;
1226                         camq_insert(&changer->devq,
1227                                 (cam_pinfo *)changer->cur_device);
1228                 } 
1229         }
1230
1231         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1232
1233         changer->cur_device = softc;
1234
1235         changer->devq.qfrozen_cnt++;
1236         softc->flags |= CD_FLAG_ACTIVE;
1237
1238         /* Just in case this device is waiting */
1239         wakeup(&softc->changer);
1240         xpt_schedule(softc->periph, /*priority*/ 1);
1241
1242         /*
1243          * Get rid of any pending timeouts, and set a flag to schedule new
1244          * ones so this device gets its full time quantum.
1245          */
1246         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1247                 untimeout(cdrunchangerqueue, changer, changer->long_handle);
1248                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1249         }
1250
1251         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1252                 untimeout(cdshorttimeout, changer, changer->short_handle);
1253                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1254         }
1255
1256         /*
1257          * We need to schedule timeouts, but we only do this after the
1258          * first transaction has completed.  This eliminates the changer
1259          * switch time.
1260          */
1261         changer->flags |= CHANGER_NEED_TIMEOUT;
1262
1263         splx(s);
1264 }
1265
1266 static void
1267 cdchangerschedule(struct cd_softc *softc)
1268 {
1269         struct cdchanger *changer;
1270         int s;
1271
1272         s = splsoftcam();
1273
1274         changer = softc->changer;
1275
1276         /*
1277          * If this is a changer, and this is the current device,
1278          * and this device has at least the minimum time quantum to
1279          * run, see if we can switch it out.
1280          */
1281         if ((softc->flags & CD_FLAG_ACTIVE) 
1282          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1283          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1284                 /*
1285                  * We try three things here.  The first is that we
1286                  * check to see whether the schedule on completion
1287                  * flag is set.  If it is, we decrement the number
1288                  * of buffers left, and if it's zero, we reschedule.
1289                  * Next, we check to see whether the pending buffer
1290                  * queue is empty and whether there are no
1291                  * outstanding transactions.  If so, we reschedule.
1292                  * Next, we see if the pending buffer queue is empty.
1293                  * If it is, we set the number of buffers left to
1294                  * the current active buffer count and set the
1295                  * schedule on complete flag.
1296                  */
1297                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1298                         if (--softc->bufs_left == 0) {
1299                                 softc->changer->flags |=
1300                                         CHANGER_MANUAL_CALL;
1301                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1302                                 cdrunchangerqueue(softc->changer);
1303                         }
1304                 } else if ((bioq_first(&softc->bio_queue) == NULL)
1305                         && (softc->outstanding_cmds == 0)) {
1306                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1307                         cdrunchangerqueue(softc->changer);
1308                 }
1309         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT) 
1310                 && (softc->flags & CD_FLAG_ACTIVE)) {
1311
1312                 /*
1313                  * Now that the first transaction to this
1314                  * particular device has completed, we can go ahead
1315                  * and schedule our timeouts.
1316                  */
1317                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1318                         changer->long_handle =
1319                             timeout(cdrunchangerqueue, changer,
1320                                     changer_max_busy_seconds * hz);
1321                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1322                 } else
1323                         printf("cdchangerschedule: already have a long"
1324                                " timeout!\n");
1325
1326                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1327                         changer->short_handle =
1328                             timeout(cdshorttimeout, changer,
1329                                     changer_min_busy_seconds * hz);
1330                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1331                 } else
1332                         printf("cdchangerschedule: already have a short "
1333                                "timeout!\n");
1334
1335                 /*
1336                  * We just scheduled timeouts, no need to schedule
1337                  * more.
1338                  */
1339                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1340
1341         }
1342         splx(s);
1343 }
1344
1345 static int
1346 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1347                                               u_int32_t cam_flags,
1348                                               u_int32_t sense_flags),
1349          u_int32_t cam_flags, u_int32_t sense_flags)
1350 {
1351         struct cd_softc *softc;
1352         struct cam_periph *periph;
1353         int error;
1354
1355         periph = xpt_path_periph(ccb->ccb_h.path);
1356         softc = (struct cd_softc *)periph->softc;
1357
1358         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1359                                   softc->disk->d_devstat);
1360
1361         if (softc->flags & CD_FLAG_CHANGER)
1362                 cdchangerschedule(softc);
1363
1364         return(error);
1365 }
1366
1367 static union ccb *
1368 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1369 {
1370         struct cd_softc *softc;
1371         int s;
1372
1373         softc = (struct cd_softc *)periph->softc;
1374
1375         if (softc->flags & CD_FLAG_CHANGER) {
1376
1377                 s = splsoftcam();
1378
1379                 /*
1380                  * This should work the first time this device is woken up,
1381                  * but just in case it doesn't, we use a while loop.
1382                  */
1383                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1384                         /*
1385                          * If this changer isn't already queued, queue it up.
1386                          */
1387                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1388                                 softc->pinfo.priority = 1;
1389                                 softc->pinfo.generation =
1390                                         ++softc->changer->devq.generation;
1391                                 camq_insert(&softc->changer->devq,
1392                                             (cam_pinfo *)softc);
1393                         }
1394                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1395                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1396                          && ((softc->changer->flags
1397                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1398                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1399                                 cdrunchangerqueue(softc->changer);
1400                         } else
1401                                 tsleep(&softc->changer, PRIBIO, "cgticb", 0);
1402                 }
1403                 splx(s);
1404         }
1405         return(cam_periph_getccb(periph, priority));
1406 }
1407
1408
1409 /*
1410  * Actually translate the requested transfer into one the physical driver
1411  * can understand.  The transfer is described by a buf and will include
1412  * only one physical transfer.
1413  */
1414 static void
1415 cdstrategy(struct bio *bp)
1416 {
1417         struct cam_periph *periph;
1418         struct cd_softc *softc;
1419         int    s;
1420
1421         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
1422         if (periph == NULL) {
1423                 biofinish(bp, NULL, ENXIO);
1424                 return;
1425         }
1426
1427         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstrategy\n"));
1428
1429         softc = (struct cd_softc *)periph->softc;
1430
1431         /*
1432          * Mask interrupts so that the pack cannot be invalidated until
1433          * after we are in the queue.  Otherwise, we might not properly
1434          * clean up one of the buffers.
1435          */
1436         s = splbio();
1437         
1438         /*
1439          * If the device has been made invalid, error out
1440          */
1441         if ((softc->flags & CD_FLAG_INVALID)) {
1442                 splx(s);
1443                 biofinish(bp, NULL, ENXIO);
1444                 return;
1445         }
1446
1447         /*
1448          * If we don't have valid media, look for it before trying to
1449          * schedule the I/O.
1450          */
1451         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1452                 int error;
1453
1454                 error = cdcheckmedia(periph);
1455                 if (error != 0) {
1456                         splx(s);
1457                         biofinish(bp, NULL, error);
1458                         return;
1459                 }
1460         }
1461
1462         /*
1463          * Place it in the queue of disk activities for this disk
1464          */
1465         bioq_disksort(&softc->bio_queue, bp);
1466
1467         splx(s);
1468         
1469         /*
1470          * Schedule ourselves for performing the work.  We do things
1471          * differently for changers.
1472          */
1473         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1474                 xpt_schedule(periph, /* XXX priority */1);
1475         else
1476                 cdschedule(periph, /* priority */ 1);
1477
1478         return;
1479 }
1480
1481 static void
1482 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1483 {
1484         struct cd_softc *softc;
1485         struct bio *bp;
1486         struct ccb_scsiio *csio;
1487         struct scsi_read_capacity_data *rcap;
1488         int s;
1489
1490         softc = (struct cd_softc *)periph->softc;
1491
1492         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1493
1494         switch (softc->state) {
1495         case CD_STATE_NORMAL:
1496         {
1497                 int oldspl;
1498
1499                 s = splbio();
1500                 bp = bioq_first(&softc->bio_queue);
1501                 if (periph->immediate_priority <= periph->pinfo.priority) {
1502                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1503
1504                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1505                                           periph_links.sle);
1506                         periph->immediate_priority = CAM_PRIORITY_NONE;
1507                         splx(s);
1508                         wakeup(&periph->ccb_list);
1509                 } else if (bp == NULL) {
1510                         splx(s);
1511                         xpt_release_ccb(start_ccb);
1512                 } else {
1513                         bioq_remove(&softc->bio_queue, bp);
1514
1515                         devstat_start_transaction_bio(softc->disk->d_devstat, bp);
1516
1517                         scsi_read_write(&start_ccb->csio,
1518                                         /*retries*/4,
1519                                         /* cbfcnp */ cddone,
1520                                         MSG_SIMPLE_Q_TAG,
1521                                         /* read */bp->bio_cmd == BIO_READ,
1522                                         /* byte2 */ 0,
1523                                         /* minimum_cmd_size */ 10,
1524                                         /* lba */ bp->bio_offset /
1525                                           softc->params.blksize,
1526                                         bp->bio_bcount / softc->params.blksize,
1527                                         /* data_ptr */ bp->bio_data,
1528                                         /* dxfer_len */ bp->bio_bcount,
1529                                         /* sense_len */ SSD_FULL_SIZE,
1530                                         /* timeout */ 30000);
1531                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1532
1533                         
1534                         /*
1535                          * Block out any asyncronous callbacks
1536                          * while we touch the pending ccb list.
1537                          */
1538                         oldspl = splcam();
1539                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1540                                          &start_ccb->ccb_h, periph_links.le);
1541                         softc->outstanding_cmds++;
1542                         splx(oldspl);
1543
1544                         /* We expect a unit attention from this device */
1545                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1546                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1547                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1548                         }
1549
1550                         start_ccb->ccb_h.ccb_bp = bp;
1551                         bp = bioq_first(&softc->bio_queue);
1552                         splx(s);
1553
1554                         xpt_action(start_ccb);
1555                 }
1556                 if (bp != NULL) {
1557                         /* Have more work to do, so ensure we stay scheduled */
1558                         xpt_schedule(periph, /* XXX priority */1);
1559                 }
1560                 break;
1561         }
1562         case CD_STATE_PROBE:
1563         {
1564
1565                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1566                                                                 M_TEMP,
1567                                                                 M_NOWAIT);
1568                 if (rcap == NULL) {
1569                         xpt_print_path(periph->path);
1570                         printf("cdstart: Couldn't malloc read_capacity data\n");
1571                         /* cd_free_periph??? */
1572                         break;
1573                 }
1574                 csio = &start_ccb->csio;
1575                 scsi_read_capacity(csio,
1576                                    /*retries*/1,
1577                                    cddone,
1578                                    MSG_SIMPLE_Q_TAG,
1579                                    rcap,
1580                                    SSD_FULL_SIZE,
1581                                    /*timeout*/20000);
1582                 start_ccb->ccb_h.ccb_bp = NULL;
1583                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1584                 xpt_action(start_ccb);
1585                 break;
1586         }
1587         }
1588 }
1589
1590 static void
1591 cddone(struct cam_periph *periph, union ccb *done_ccb)
1592
1593         struct cd_softc *softc;
1594         struct ccb_scsiio *csio;
1595
1596         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1597
1598         softc = (struct cd_softc *)periph->softc;
1599         csio = &done_ccb->csio;
1600
1601         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1602         case CD_CCB_BUFFER_IO:
1603         {
1604                 struct bio      *bp;
1605                 int             error;
1606                 int             oldspl;
1607
1608                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1609                 error = 0;
1610
1611                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1612                         int sf;
1613
1614                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1615                                 sf = SF_RETRY_UA;
1616                         else
1617                                 sf = 0;
1618
1619                         error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1620                         if (error == ERESTART) {
1621                                 /*
1622                                  * A retry was scheuled, so
1623                                  * just return.
1624                                  */
1625                                 return;
1626                         }
1627                 }
1628
1629                 if (error != 0) {
1630                         int s;
1631
1632                         xpt_print_path(periph->path);
1633                         printf("cddone: got error %#x back\n", error);
1634                         s = splbio();
1635                         bioq_flush(&softc->bio_queue, NULL, EIO);
1636                         splx(s);
1637                         bp->bio_resid = bp->bio_bcount;
1638                         bp->bio_error = error;
1639                         bp->bio_flags |= BIO_ERROR;
1640                         cam_release_devq(done_ccb->ccb_h.path,
1641                                          /*relsim_flags*/0,
1642                                          /*reduction*/0,
1643                                          /*timeout*/0,
1644                                          /*getcount_only*/0);
1645
1646                 } else {
1647                         bp->bio_resid = csio->resid;
1648                         bp->bio_error = 0;
1649                         if (bp->bio_resid != 0) {
1650                                 /*
1651                                  * Short transfer ??? 
1652                                  * XXX: not sure this is correct for partial
1653                                  * transfers at EOM
1654                                  */
1655                                 bp->bio_flags |= BIO_ERROR;
1656                         }
1657                 }
1658
1659                 /*
1660                  * Block out any asyncronous callbacks
1661                  * while we touch the pending ccb list.
1662                  */
1663                 oldspl = splcam();
1664                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1665                 softc->outstanding_cmds--;
1666                 splx(oldspl);
1667
1668                 if (softc->flags & CD_FLAG_CHANGER)
1669                         cdchangerschedule(softc);
1670
1671                 biofinish(bp, softc->disk->d_devstat, 0);
1672                 break;
1673         }
1674         case CD_CCB_PROBE:
1675         {
1676                 struct     scsi_read_capacity_data *rdcap;
1677                 char       announce_buf[120]; /*
1678                                                * Currently (9/30/97) the 
1679                                                * longest possible announce 
1680                                                * buffer is 108 bytes, for the 
1681                                                * first error case below.  
1682                                                * That is 39 bytes for the 
1683                                                * basic string, 16 bytes for the
1684                                                * biggest sense key (hardware 
1685                                                * error), 52 bytes for the
1686                                                * text of the largest sense 
1687                                                * qualifier valid for a CDROM,
1688                                                * (0x72, 0x03 or 0x04,
1689                                                * 0x03), and one byte for the
1690                                                * null terminating character.
1691                                                * To allow for longer strings, 
1692                                                * the announce buffer is 120
1693                                                * bytes.
1694                                                */
1695                 struct     cd_params *cdp;
1696
1697                 cdp = &softc->params;
1698
1699                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1700                 
1701                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1702                 cdp->blksize = scsi_4btoul (rdcap->length);
1703
1704                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1705
1706                         snprintf(announce_buf, sizeof(announce_buf),
1707                                 "cd present [%lu x %lu byte records]",
1708                                 cdp->disksize, (u_long)cdp->blksize);
1709
1710                 } else {
1711                         int     error;
1712                         /*
1713                          * Retry any UNIT ATTENTION type errors.  They
1714                          * are expected at boot.
1715                          */
1716                         error = cderror(done_ccb, CAM_RETRY_SELTO,
1717                                         SF_RETRY_UA | SF_NO_PRINT);
1718                         if (error == ERESTART) {
1719                                 /*
1720                                  * A retry was scheuled, so
1721                                  * just return.
1722                                  */
1723                                 return;
1724                         } else if (error != 0) {
1725
1726                                 struct scsi_sense_data *sense;
1727                                 int asc, ascq;
1728                                 int sense_key, error_code;
1729                                 int have_sense;
1730                                 cam_status status;
1731                                 struct ccb_getdev cgd;
1732
1733                                 /* Don't wedge this device's queue */
1734                                 cam_release_devq(done_ccb->ccb_h.path,
1735                                                  /*relsim_flags*/0,
1736                                                  /*reduction*/0,
1737                                                  /*timeout*/0,
1738                                                  /*getcount_only*/0);
1739
1740                                 status = done_ccb->ccb_h.status;
1741
1742                                 xpt_setup_ccb(&cgd.ccb_h, 
1743                                               done_ccb->ccb_h.path,
1744                                               /* priority */ 1);
1745                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1746                                 xpt_action((union ccb *)&cgd);
1747
1748                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1749                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1750                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1751                                         have_sense = FALSE;
1752                                 else
1753                                         have_sense = TRUE;
1754
1755                                 if (have_sense) {
1756                                         sense = &csio->sense_data;
1757                                         scsi_extract_sense(sense, &error_code,
1758                                                            &sense_key, 
1759                                                            &asc, &ascq);
1760                                 }
1761                                 /*
1762                                  * Attach to anything that claims to be a
1763                                  * CDROM or WORM device, as long as it
1764                                  * doesn't return a "Logical unit not
1765                                  * supported" (0x25) error.
1766                                  */
1767                                 if ((have_sense) && (asc != 0x25)
1768                                  && (error_code == SSD_CURRENT_ERROR)) {
1769                                         const char *sense_key_desc;
1770                                         const char *asc_desc;
1771
1772                                         scsi_sense_desc(sense_key, asc, ascq,
1773                                                         &cgd.inq_data,
1774                                                         &sense_key_desc,
1775                                                         &asc_desc);
1776                                         snprintf(announce_buf,
1777                                             sizeof(announce_buf),
1778                                                 "Attempt to query device "
1779                                                 "size failed: %s, %s",
1780                                                 sense_key_desc,
1781                                                 asc_desc);
1782                                 } else if ((have_sense == 0) 
1783                                       && ((status & CAM_STATUS_MASK) ==
1784                                            CAM_SCSI_STATUS_ERROR)
1785                                       && (csio->scsi_status ==
1786                                           SCSI_STATUS_BUSY)) {
1787                                         snprintf(announce_buf,
1788                                             sizeof(announce_buf),
1789                                             "Attempt to query device "
1790                                             "size failed: SCSI Status: %s",
1791                                             scsi_status_string(csio));
1792                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1793                                         /*
1794                                          * We only print out an error for
1795                                          * CDROM type devices.  For WORM
1796                                          * devices, we don't print out an
1797                                          * error since a few WORM devices
1798                                          * don't support CDROM commands.
1799                                          * If we have sense information, go
1800                                          * ahead and print it out.
1801                                          * Otherwise, just say that we 
1802                                          * couldn't attach.
1803                                          */
1804
1805                                         /*
1806                                          * Just print out the error, not
1807                                          * the full probe message, when we
1808                                          * don't attach.
1809                                          */
1810                                         if (have_sense)
1811                                                 scsi_sense_print(
1812                                                         &done_ccb->csio);
1813                                         else {
1814                                                 xpt_print_path(periph->path);
1815                                                 printf("got CAM status %#x\n",
1816                                                        done_ccb->ccb_h.status);
1817                                         }
1818                                         xpt_print_path(periph->path);
1819                                         printf("fatal error, failed" 
1820                                                " to attach to device\n");
1821
1822                                         /*
1823                                          * Invalidate this peripheral.
1824                                          */
1825                                         cam_periph_invalidate(periph);
1826
1827                                         announce_buf[0] = '\0';
1828                                 } else {
1829
1830                                         /*
1831                                          * Invalidate this peripheral.
1832                                          */
1833                                         cam_periph_invalidate(periph);
1834                                         announce_buf[0] = '\0';
1835                                 }
1836                         }
1837                 }
1838                 free(rdcap, M_TEMP);
1839                 if (announce_buf[0] != '\0') {
1840                         xpt_announce_periph(periph, announce_buf);
1841                         if (softc->flags & CD_FLAG_CHANGER)
1842                                 cdchangerschedule(softc);
1843                         /*
1844                          * Create our sysctl variables, now that we know
1845                          * we have successfully attached.
1846                          */
1847                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1848                 }
1849                 softc->state = CD_STATE_NORMAL;         
1850                 /*
1851                  * Since our peripheral may be invalidated by an error
1852                  * above or an external event, we must release our CCB
1853                  * before releasing the probe lock on the peripheral.
1854                  * The peripheral will only go away once the last lock
1855                  * is removed, and we need it around for the CCB release
1856                  * operation.
1857                  */
1858                 xpt_release_ccb(done_ccb);
1859                 cam_periph_unlock(periph);
1860                 return;
1861         }
1862         case CD_CCB_WAITING:
1863         {
1864                 /* Caller will release the CCB */
1865                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 
1866                           ("trying to wakeup ccbwait\n"));
1867
1868                 wakeup(&done_ccb->ccb_h.cbfcnp);
1869                 return;
1870         }
1871         default:
1872                 break;
1873         }
1874         xpt_release_ccb(done_ccb);
1875 }
1876
1877 static union cd_pages *
1878 cdgetpage(struct cd_mode_params *mode_params)
1879 {
1880         union cd_pages *page;
1881
1882         if (mode_params->cdb_size == 10)
1883                 page = (union cd_pages *)find_mode_page_10(
1884                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1885         else
1886                 page = (union cd_pages *)find_mode_page_6(
1887                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1888
1889         return (page);
1890 }
1891
1892 static int
1893 cdgetpagesize(int page_num)
1894 {
1895         int i;
1896
1897         for (i = 0; i < (sizeof(cd_page_size_table)/
1898              sizeof(cd_page_size_table[0])); i++) {
1899                 if (cd_page_size_table[i].page == page_num)
1900                         return (cd_page_size_table[i].page_size);
1901         }
1902
1903         return (-1);
1904 }
1905
1906 static int
1907 cdioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
1908 {
1909
1910         struct  cam_periph *periph;
1911         struct  cd_softc *softc;
1912         int     error, nocopyout;
1913
1914         periph = (struct cam_periph *)dp->d_drv1;
1915         if (periph == NULL)
1916                 return(ENXIO);  
1917
1918         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdioctl\n"));
1919
1920         softc = (struct cd_softc *)periph->softc;
1921
1922         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 
1923                   ("trying to do ioctl %#lx\n", cmd));
1924
1925         error = cam_periph_lock(periph, PRIBIO | PCATCH);
1926
1927         if (error != 0)
1928                 return(error);
1929         /*
1930          * If we don't have media loaded, check for it.  If still don't
1931          * have media loaded, we can only do a load or eject.
1932          *
1933          * We only care whether media is loaded if this is a cd-specific ioctl
1934          * (thus the IOCGROUP check below).  Note that this will break if
1935          * anyone adds any ioctls into the switch statement below that don't
1936          * have their ioctl group set to 'c'.
1937          */
1938         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1939          && ((cmd != CDIOCCLOSE)
1940           && (cmd != CDIOCEJECT))
1941          && (IOCGROUP(cmd) == 'c')) {
1942                 error = cdcheckmedia(periph);
1943                 if (error != 0) {
1944                         cam_periph_unlock(periph);
1945                         return (error);
1946                 }
1947         }
1948
1949         nocopyout = 0;
1950         switch (cmd) {
1951
1952         case CDIOCPLAYTRACKS:
1953                 {
1954                         struct ioc_play_track *args
1955                             = (struct ioc_play_track *) addr;
1956                         struct cd_mode_params params;
1957                         union cd_pages *page;
1958
1959                         params.alloc_len = sizeof(union cd_mode_data_6_10);
1960                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
1961                                                  M_WAITOK | M_ZERO);
1962
1963                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
1964                                   ("trying to do CDIOCPLAYTRACKS\n"));
1965
1966                         error = cdgetmode(periph, &params, AUDIO_PAGE);
1967                         if (error) {
1968                                 free(params.mode_buf, M_TEMP);
1969                                 break;
1970                         }
1971                         page = cdgetpage(&params);
1972
1973                         page->audio.flags &= ~CD_PA_SOTC;
1974                         page->audio.flags |= CD_PA_IMMED;
1975                         error = cdsetmode(periph, &params);
1976                         free(params.mode_buf, M_TEMP);
1977                         if (error)
1978                                 break;
1979
1980                         /*
1981                          * This was originally implemented with the PLAY
1982                          * AUDIO TRACK INDEX command, but that command was
1983                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1984                          * drives support it but ATAPI and ATAPI-derivative
1985                          * drives don't seem to support it.  So we keep a
1986                          * cache of the table of contents and translate
1987                          * track numbers to MSF format.
1988                          */
1989                         if (softc->flags & CD_FLAG_VALID_TOC) {
1990                                 union msf_lba *sentry, *eentry;
1991                                 int st, et;
1992
1993                                 if (args->end_track <
1994                                     softc->toc.header.ending_track + 1)
1995                                         args->end_track++;
1996                                 if (args->end_track >
1997                                     softc->toc.header.ending_track + 1)
1998                                         args->end_track =
1999                                             softc->toc.header.ending_track + 1;
2000                                 st = args->start_track -
2001                                         softc->toc.header.starting_track;
2002                                 et = args->end_track -
2003                                         softc->toc.header.starting_track;
2004                                 if ((st < 0)
2005                                  || (et < 0)
2006                                  || (st > (softc->toc.header.ending_track -
2007                                      softc->toc.header.starting_track))) {
2008                                         error = EINVAL;
2009                                         break;
2010                                 }
2011                                 sentry = &softc->toc.entries[st].addr;
2012                                 eentry = &softc->toc.entries[et].addr;
2013                                 error = cdplaymsf(periph,
2014                                                   sentry->msf.minute,
2015                                                   sentry->msf.second,
2016                                                   sentry->msf.frame,
2017                                                   eentry->msf.minute,
2018                                                   eentry->msf.second,
2019                                                   eentry->msf.frame);
2020                         } else {
2021                                 /*
2022                                  * If we don't have a valid TOC, try the
2023                                  * play track index command.  It is part of
2024                                  * the SCSI-2 spec, but was removed in the
2025                                  * MMC specs.  ATAPI and ATAPI-derived
2026                                  * drives don't support it.
2027                                  */
2028                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
2029                                         args->start_track =
2030                                                 bin2bcd(args->start_track);
2031                                         args->end_track =
2032                                                 bin2bcd(args->end_track);
2033                                 }
2034                                 error = cdplaytracks(periph,
2035                                                      args->start_track,
2036                                                      args->start_index,
2037                                                      args->end_track,
2038                                                      args->end_index);
2039                         }
2040                 }
2041                 break;
2042         case CDIOCPLAYMSF:
2043                 {
2044                         struct ioc_play_msf *args
2045                                 = (struct ioc_play_msf *) addr;
2046                         struct cd_mode_params params;
2047                         union cd_pages *page;
2048
2049                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2050                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2051                                                  M_WAITOK | M_ZERO);
2052
2053                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2054                                   ("trying to do CDIOCPLAYMSF\n"));
2055
2056                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2057                         if (error) {
2058                                 free(params.mode_buf, M_TEMP);
2059                                 break;
2060                         }
2061                         page = cdgetpage(&params);
2062
2063                         page->audio.flags &= ~CD_PA_SOTC;
2064                         page->audio.flags |= CD_PA_IMMED;
2065                         error = cdsetmode(periph, &params);
2066                         free(params.mode_buf, M_TEMP);
2067                         if (error)
2068                                 break;
2069                         error = cdplaymsf(periph,
2070                                           args->start_m,
2071                                           args->start_s,
2072                                           args->start_f,
2073                                           args->end_m,
2074                                           args->end_s,
2075                                           args->end_f);
2076                 }
2077                 break;
2078         case CDIOCPLAYBLOCKS:
2079                 {
2080                         struct ioc_play_blocks *args
2081                                 = (struct ioc_play_blocks *) addr;
2082                         struct cd_mode_params params;
2083                         union cd_pages *page;
2084
2085                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2086                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2087
2088                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2089                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2090                                                  M_WAITOK | M_ZERO);
2091
2092                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2093                         if (error) {
2094                                 free(params.mode_buf, M_TEMP);
2095                                 break;
2096                         }
2097                         page = cdgetpage(&params);
2098
2099                         page->audio.flags &= ~CD_PA_SOTC;
2100                         page->audio.flags |= CD_PA_IMMED;
2101                         error = cdsetmode(periph, &params);
2102                         free(params.mode_buf, M_TEMP);
2103                         if (error)
2104                                 break;
2105                         error = cdplay(periph, args->blk, args->len);
2106                 }
2107                 break;
2108         case CDIOCREADSUBCHANNEL_SYSSPACE:
2109                 nocopyout = 1;
2110                 /* Fallthrough */
2111         case CDIOCREADSUBCHANNEL:
2112                 {
2113                         struct ioc_read_subchannel *args
2114                                 = (struct ioc_read_subchannel *) addr;
2115                         struct cd_sub_channel_info *data;
2116                         u_int32_t len = args->data_len;
2117
2118                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2119                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2120
2121                         data = malloc(sizeof(struct cd_sub_channel_info), 
2122                                       M_TEMP, M_WAITOK);
2123
2124                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2125                             (len < sizeof(struct cd_sub_channel_header))) {
2126                                 printf(
2127                                         "scsi_cd: cdioctl: "
2128                                         "cdioreadsubchannel: error, len=%d\n",
2129                                         len);
2130                                 error = EINVAL;
2131                                 free(data, M_TEMP);
2132                                 break;
2133                         }
2134
2135                         if (softc->quirks & CD_Q_BCD_TRACKS)
2136                                 args->track = bin2bcd(args->track);
2137
2138                         error = cdreadsubchannel(periph, args->address_format,
2139                                 args->data_format, args->track, data, len);
2140
2141                         if (error) {
2142                                 free(data, M_TEMP);
2143                                 break;
2144                         }
2145                         if (softc->quirks & CD_Q_BCD_TRACKS)
2146                                 data->what.track_info.track_number =
2147                                     bcd2bin(data->what.track_info.track_number);
2148                         len = min(len, ((data->header.data_len[0] << 8) +
2149                                 data->header.data_len[1] +
2150                                 sizeof(struct cd_sub_channel_header)));
2151                         if (nocopyout == 0) {
2152                                 if (copyout(data, args->data, len) != 0) {
2153                                         error = EFAULT;
2154                                 }
2155                         } else {
2156                                 bcopy(data, args->data, len);
2157                         }
2158                         free(data, M_TEMP);
2159                 }
2160                 break;
2161
2162         case CDIOREADTOCHEADER:
2163                 {
2164                         struct ioc_toc_header *th;
2165
2166                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2167                                   ("trying to do CDIOREADTOCHEADER\n"));
2168
2169                         th = malloc(sizeof(struct ioc_toc_header), M_TEMP,
2170                                     M_WAITOK);
2171                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th, 
2172                                           sizeof (*th), /*sense_flags*/0);
2173                         if (error) {
2174                                 free(th, M_TEMP);
2175                                 break;
2176                         }
2177                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2178                                 /* we are going to have to convert the BCD
2179                                  * encoding on the cd to what is expected
2180                                  */
2181                                 th->starting_track = 
2182                                         bcd2bin(th->starting_track);
2183                                 th->ending_track = bcd2bin(th->ending_track);
2184                         }
2185                         th->len = ntohs(th->len);
2186                         bcopy(th, addr, sizeof(*th));
2187                         free(th, M_TEMP);
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                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2201                                   ("trying to do CDIOREADTOCENTRYS\n"));
2202
2203                         data = malloc(sizeof(*data), M_TEMP, M_WAITOK);
2204                         lead = malloc(sizeof(*lead), M_TEMP, M_WAITOK);
2205
2206                         if (te->data_len < sizeof(struct cd_toc_entry)
2207                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2208                          || (te->address_format != CD_MSF_FORMAT
2209                           && te->address_format != CD_LBA_FORMAT)) {
2210                                 error = EINVAL;
2211                                 printf("scsi_cd: error in readtocentries, "
2212                                        "returning EINVAL\n");
2213                                 free(data, M_TEMP);
2214                                 free(lead, M_TEMP);
2215                                 break;
2216                         }
2217
2218                         th = &data->header;
2219                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th, 
2220                                           sizeof (*th), /*sense_flags*/0);
2221                         if (error) {
2222                                 free(data, M_TEMP);
2223                                 free(lead, M_TEMP);
2224                                 break;
2225                         }
2226
2227                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2228                                 /* we are going to have to convert the BCD
2229                                  * encoding on the cd to what is expected
2230                                  */
2231                                 th->starting_track =
2232                                     bcd2bin(th->starting_track);
2233                                 th->ending_track = bcd2bin(th->ending_track);
2234                         }
2235
2236                         if (starting_track == 0)
2237                                 starting_track = th->starting_track;
2238                         else if (starting_track == LEADOUT)
2239                                 starting_track = th->ending_track + 1;
2240                         else if (starting_track < th->starting_track ||
2241                                  starting_track > th->ending_track + 1) {
2242                                 printf("scsi_cd: error in readtocentries, "
2243                                        "returning EINVAL\n");
2244                                 free(data, M_TEMP);
2245                                 free(lead, M_TEMP);
2246                                 error = EINVAL;
2247                                 break;
2248                         }
2249
2250                         /* calculate reading length without leadout entry */
2251                         readlen = (th->ending_track - starting_track + 1) *
2252                                   sizeof(struct cd_toc_entry);
2253
2254                         /* and with leadout entry */
2255                         len = readlen + sizeof(struct cd_toc_entry);
2256                         if (te->data_len < len) {
2257                                 len = te->data_len;
2258                                 if (readlen > len)
2259                                         readlen = len;
2260                         }
2261                         if (len > sizeof(data->entries)) {
2262                                 printf("scsi_cd: error in readtocentries, "
2263                                        "returning EINVAL\n");
2264                                 error = EINVAL;
2265                                 free(data, M_TEMP);
2266                                 free(lead, M_TEMP);
2267                                 break;
2268                         }
2269                         num = len / sizeof(struct cd_toc_entry);
2270
2271                         if (readlen > 0) {
2272                                 error = cdreadtoc(periph, te->address_format,
2273                                                   starting_track,
2274                                                   (u_int8_t *)data,
2275                                                   readlen + sizeof (*th),
2276                                                   /*sense_flags*/0);
2277                                 if (error) {
2278                                         free(data, M_TEMP);
2279                                         free(lead, M_TEMP);
2280                                         break;
2281                                 }
2282                         }
2283
2284                         /* make leadout entry if needed */
2285                         idx = starting_track + num - 1;
2286                         if (softc->quirks & CD_Q_BCD_TRACKS)
2287                                 th->ending_track = bcd2bin(th->ending_track);
2288                         if (idx == th->ending_track + 1) {
2289                                 error = cdreadtoc(periph, te->address_format,
2290                                                   LEADOUT, (u_int8_t *)lead,
2291                                                   sizeof(*lead),
2292                                                   /*sense_flags*/0);
2293                                 if (error) {
2294                                         free(data, M_TEMP);
2295                                         free(lead, M_TEMP);
2296                                         break;
2297                                 }
2298                                 data->entries[idx - starting_track] = 
2299                                         lead->entry;
2300                         }
2301                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2302                                 for (idx = 0; idx < num - 1; idx++) {
2303                                         data->entries[idx].track =
2304                                             bcd2bin(data->entries[idx].track);
2305                                 }
2306                         }
2307
2308                         error = copyout(data->entries, te->data, len);
2309                         free(data, M_TEMP);
2310                         free(lead, M_TEMP);
2311                 }
2312                 break;
2313         case CDIOREADTOCENTRY:
2314                 {
2315                         struct cd_toc_single *data;
2316                         struct ioc_read_toc_single_entry *te =
2317                                 (struct ioc_read_toc_single_entry *) addr;
2318                         struct ioc_toc_header *th;
2319                         u_int32_t track;
2320
2321                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2322                                   ("trying to do CDIOREADTOCENTRY\n"));
2323
2324                         data = malloc(sizeof(*data), M_TEMP, M_WAITOK);
2325
2326                         if (te->address_format != CD_MSF_FORMAT
2327                             && te->address_format != CD_LBA_FORMAT) {
2328                                 printf("error in readtocentry, "
2329                                        " returning EINVAL\n");
2330                                 free(data, M_TEMP);
2331                                 error = EINVAL;
2332                                 break;
2333                         }
2334
2335                         th = &data->header;
2336                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2337                                           sizeof (*th), /*sense_flags*/0);
2338                         if (error) {
2339                                 free(data, M_TEMP);
2340                                 break;
2341                         }
2342
2343                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2344                                 /* we are going to have to convert the BCD
2345                                  * encoding on the cd to what is expected
2346                                  */
2347                                 th->starting_track =
2348                                     bcd2bin(th->starting_track);
2349                                 th->ending_track = bcd2bin(th->ending_track);
2350                         }
2351                         track = te->track;
2352                         if (track == 0)
2353                                 track = th->starting_track;
2354                         else if (track == LEADOUT)
2355                                 /* OK */;
2356                         else if (track < th->starting_track ||
2357                                  track > th->ending_track + 1) {
2358                                 printf("error in readtocentry, "
2359                                        " returning EINVAL\n");
2360                                 free(data, M_TEMP);
2361                                 error = EINVAL;
2362                                 break;
2363                         }
2364
2365                         error = cdreadtoc(periph, te->address_format, track,
2366                                           (u_int8_t *)data, sizeof(*data),
2367                                           /*sense_flags*/0);
2368                         if (error) {
2369                                 free(data, M_TEMP);
2370                                 break;
2371                         }
2372
2373                         if (softc->quirks & CD_Q_BCD_TRACKS)
2374                                 data->entry.track = bcd2bin(data->entry.track);
2375                         bcopy(&data->entry, &te->entry,
2376                               sizeof(struct cd_toc_entry));
2377                         free(data, M_TEMP);
2378                 }
2379                 break;
2380         case CDIOCSETPATCH:
2381                 {
2382                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2383                         struct cd_mode_params params;
2384                         union cd_pages *page;
2385
2386                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2387                                   ("trying to do CDIOCSETPATCH\n"));
2388
2389                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2390                         params.mode_buf = malloc(params.alloc_len, M_TEMP, 
2391                                                  M_WAITOK | M_ZERO);
2392                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2393                         if (error) {
2394                                 free(params.mode_buf, M_TEMP);
2395                                 break;
2396                         }
2397                         page = cdgetpage(&params);
2398
2399                         page->audio.port[LEFT_PORT].channels = 
2400                                 arg->patch[0];
2401                         page->audio.port[RIGHT_PORT].channels = 
2402                                 arg->patch[1];
2403                         page->audio.port[2].channels = arg->patch[2];
2404                         page->audio.port[3].channels = arg->patch[3];
2405                         error = cdsetmode(periph, &params);
2406                         free(params.mode_buf, M_TEMP);
2407                 }
2408                 break;
2409         case CDIOCGETVOL:
2410                 {
2411                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2412                         struct cd_mode_params params;
2413                         union cd_pages *page;
2414
2415                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2416                                   ("trying to do CDIOCGETVOL\n"));
2417
2418                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2419                         params.mode_buf = malloc(params.alloc_len, M_TEMP, 
2420                                                  M_WAITOK | M_ZERO);
2421                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2422                         if (error) {
2423                                 free(params.mode_buf, M_TEMP);
2424                                 break;
2425                         }
2426                         page = cdgetpage(&params);
2427
2428                         arg->vol[LEFT_PORT] = 
2429                                 page->audio.port[LEFT_PORT].volume;
2430                         arg->vol[RIGHT_PORT] = 
2431                                 page->audio.port[RIGHT_PORT].volume;
2432                         arg->vol[2] = page->audio.port[2].volume;
2433                         arg->vol[3] = page->audio.port[3].volume;
2434                         free(params.mode_buf, M_TEMP);
2435                 }
2436                 break;
2437         case CDIOCSETVOL:
2438                 {
2439                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2440                         struct cd_mode_params params;
2441                         union cd_pages *page;
2442
2443                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2444                                   ("trying to do CDIOCSETVOL\n"));
2445
2446                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2447                         params.mode_buf = malloc(params.alloc_len, M_TEMP, 
2448                                                  M_WAITOK | M_ZERO);
2449                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2450                         if (error) {
2451                                 free(params.mode_buf, M_TEMP);
2452                                 break;
2453                         }
2454                         page = cdgetpage(&params);
2455
2456                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2457                         page->audio.port[LEFT_PORT].volume = 
2458                                 arg->vol[LEFT_PORT];
2459                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2460                         page->audio.port[RIGHT_PORT].volume = 
2461                                 arg->vol[RIGHT_PORT];
2462                         page->audio.port[2].volume = arg->vol[2];
2463                         page->audio.port[3].volume = arg->vol[3];
2464                         error = cdsetmode(periph, &params);
2465                         free(params.mode_buf, M_TEMP);
2466                 }
2467                 break;
2468         case CDIOCSETMONO:
2469                 {
2470                         struct cd_mode_params params;
2471                         union cd_pages *page;
2472
2473                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2474                                   ("trying to do CDIOCSETMONO\n"));
2475
2476                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2477                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2478                                                  M_WAITOK | M_ZERO);
2479                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2480                         if (error) {
2481                                 free(params.mode_buf, M_TEMP);
2482                                 break;
2483                         }
2484                         page = cdgetpage(&params);
2485
2486                         page->audio.port[LEFT_PORT].channels = 
2487                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2488                         page->audio.port[RIGHT_PORT].channels = 
2489                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2490                         page->audio.port[2].channels = 0;
2491                         page->audio.port[3].channels = 0;
2492                         error = cdsetmode(periph, &params);
2493                         free(params.mode_buf, M_TEMP);
2494                 }
2495                 break;
2496         case CDIOCSETSTEREO:
2497                 {
2498                         struct cd_mode_params params;
2499                         union cd_pages *page;
2500
2501                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2502                                   ("trying to do CDIOCSETSTEREO\n"));
2503
2504                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2505                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2506                                                  M_WAITOK | M_ZERO);
2507                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2508                         if (error) {
2509                                 free(params.mode_buf, M_TEMP);
2510                                 break;
2511                         }
2512                         page = cdgetpage(&params);
2513
2514                         page->audio.port[LEFT_PORT].channels = 
2515                                 LEFT_CHANNEL;
2516                         page->audio.port[RIGHT_PORT].channels = 
2517                                 RIGHT_CHANNEL;
2518                         page->audio.port[2].channels = 0;
2519                         page->audio.port[3].channels = 0;
2520                         error = cdsetmode(periph, &params);
2521                         free(params.mode_buf, M_TEMP);
2522                 }
2523                 break;
2524         case CDIOCSETMUTE:
2525                 {
2526                         struct cd_mode_params params;
2527                         union cd_pages *page;
2528
2529                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2530                                   ("trying to do CDIOCSETMUTE\n"));
2531
2532                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2533                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2534                                                  M_WAITOK | M_ZERO);
2535                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2536                         if (error) {
2537                                 free(&params, M_TEMP);
2538                                 break;
2539                         }
2540                         page = cdgetpage(&params);
2541
2542                         page->audio.port[LEFT_PORT].channels = 0;
2543                         page->audio.port[RIGHT_PORT].channels = 0;
2544                         page->audio.port[2].channels = 0;
2545                         page->audio.port[3].channels = 0;
2546                         error = cdsetmode(periph, &params);
2547                         free(params.mode_buf, M_TEMP);
2548                 }
2549                 break;
2550         case CDIOCSETLEFT:
2551                 {
2552                         struct cd_mode_params params;
2553                         union cd_pages *page;
2554
2555                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2556                                   ("trying to do CDIOCSETLEFT\n"));
2557
2558                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2559                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2560                                                  M_WAITOK | M_ZERO);
2561                         
2562                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2563                         if (error) {
2564                                 free(params.mode_buf, M_TEMP);
2565                                 break;
2566                         }
2567                         page = cdgetpage(&params);
2568
2569                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2570                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2571                         page->audio.port[2].channels = 0;
2572                         page->audio.port[3].channels = 0;
2573                         error = cdsetmode(periph, &params);
2574                         free(params.mode_buf, M_TEMP);
2575                 }
2576                 break;
2577         case CDIOCSETRIGHT:
2578                 {
2579                         struct cd_mode_params params;
2580                         union cd_pages *page;
2581
2582                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE, 
2583                                   ("trying to do CDIOCSETRIGHT\n"));
2584
2585                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2586                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2587                                                  M_WAITOK | M_ZERO);
2588
2589                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2590                         if (error) {
2591                                 free(params.mode_buf, M_TEMP);
2592                                 break;
2593                         }
2594                         page = cdgetpage(&params);
2595
2596                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2597                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2598                         page->audio.port[2].channels = 0;
2599                         page->audio.port[3].channels = 0;
2600                         error = cdsetmode(periph, &params);
2601                         free(params.mode_buf, M_TEMP);
2602                 }
2603                 break;
2604         case CDIOCRESUME:
2605                 error = cdpause(periph, 1);
2606                 break;
2607         case CDIOCPAUSE:
2608                 error = cdpause(periph, 0);
2609                 break;
2610         case CDIOCSTART:
2611                 error = cdstartunit(periph, 0);
2612                 break;
2613         case CDIOCCLOSE:
2614                 error = cdstartunit(periph, 1);
2615                 break;
2616         case CDIOCSTOP:
2617                 error = cdstopunit(periph, 0);
2618                 break;
2619         case CDIOCEJECT:
2620                 error = cdstopunit(periph, 1);
2621                 break;
2622         case CDIOCALLOW:
2623                 cdprevent(periph, PR_ALLOW);
2624                 break;
2625         case CDIOCPREVENT:
2626                 cdprevent(periph, PR_PREVENT);
2627                 break;
2628         case CDIOCSETDEBUG:
2629                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2630                 error = ENOTTY;
2631                 break;
2632         case CDIOCCLRDEBUG:
2633                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2634                 error = ENOTTY;
2635                 break;
2636         case CDIOCRESET:
2637                 /* return (cd_reset(periph)); */
2638                 error = ENOTTY;
2639                 break;
2640         case CDRIOCREADSPEED:
2641                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2642                 break;
2643         case CDRIOCWRITESPEED:
2644                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2645                 break;
2646         case DVDIOCSENDKEY:
2647         case DVDIOCREPORTKEY: {
2648                 struct dvd_authinfo *authinfo;
2649
2650                 authinfo = (struct dvd_authinfo *)addr;
2651
2652                 if (cmd == DVDIOCREPORTKEY)
2653                         error = cdreportkey(periph, authinfo);
2654                 else
2655                         error = cdsendkey(periph, authinfo);
2656                 break;
2657                 }
2658         case DVDIOCREADSTRUCTURE: {
2659                 struct dvd_struct *dvdstruct;
2660
2661                 dvdstruct = (struct dvd_struct *)addr;
2662
2663                 error = cdreaddvdstructure(periph, dvdstruct);
2664
2665                 break;
2666         }
2667         default:
2668                 error = cam_periph_ioctl(periph, cmd, addr, cderror);
2669                 break;
2670         }
2671
2672         cam_periph_unlock(periph);
2673
2674         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2675         if (error && bootverbose) {
2676                 printf("scsi_cd.c::ioctl cmd=%08lx error=%d\n", cmd, error);
2677         }
2678
2679         return (error);
2680 }
2681
2682 static void
2683 cdprevent(struct cam_periph *periph, int action)
2684 {
2685         union   ccb *ccb;
2686         struct  cd_softc *softc;
2687         int     error;
2688
2689         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2690
2691         softc = (struct cd_softc *)periph->softc;
2692         
2693         if (((action == PR_ALLOW)
2694           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2695          || ((action == PR_PREVENT)
2696           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2697                 return;
2698         }
2699             
2700         ccb = cdgetccb(periph, /* priority */ 1);
2701
2702         scsi_prevent(&ccb->csio, 
2703                      /*retries*/ 1,
2704                      cddone,
2705                      MSG_SIMPLE_Q_TAG,
2706                      action,
2707                      SSD_FULL_SIZE,
2708                      /* timeout */60000);
2709         
2710         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2711                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2712
2713         xpt_release_ccb(ccb);
2714
2715         if (error == 0) {
2716                 if (action == PR_ALLOW)
2717                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2718                 else
2719                         softc->flags |= CD_FLAG_DISC_LOCKED;
2720         }
2721 }
2722
2723 /*
2724  * XXX: the disk media and sector size is only really able to change
2725  * XXX: while the device is closed.
2726  */
2727 static int
2728 cdcheckmedia(struct cam_periph *periph)
2729 {
2730         struct cd_softc *softc;
2731         struct ioc_toc_header *toch;
2732         struct cd_toc_single leadout;
2733         u_int32_t size, toclen;
2734         int error, num_entries, cdindex;
2735
2736         softc = (struct cd_softc *)periph->softc;
2737
2738         cdprevent(periph, PR_PREVENT);
2739         softc->disk->d_maxsize = DFLTPHYS;
2740         softc->disk->d_sectorsize = 2048;
2741         softc->disk->d_mediasize = 0;
2742
2743         /*
2744          * Get the disc size and block size.  If we can't get it, we don't
2745          * have media, most likely.
2746          */
2747         if ((error = cdsize(periph, &size)) != 0) {
2748                 softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2749                 cdprevent(periph, PR_ALLOW);
2750                 return (error);
2751         } else
2752                 softc->flags |= CD_FLAG_VALID_MEDIA;
2753
2754         /*
2755          * Now we check the table of contents.  This (currently) is only
2756          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2757          * things like present a separate entry in /dev for each track,
2758          * like that acd(4) driver does.
2759          */
2760         bzero(&softc->toc, sizeof(softc->toc));
2761         toch = &softc->toc.header;
2762         /*
2763          * We will get errors here for media that doesn't have a table of
2764          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2765          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2766          * has not been recorded (no complete session) and the Format codes
2767          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2768          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2769          * reading an incomplete session on DDC/CD-R/RW media shall report
2770          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2771          *
2772          * So this isn't fatal if we can't read the table of contents, it
2773          * just means that the user won't be able to issue the play tracks
2774          * ioctl, and likely lots of other stuff won't work either.  They
2775          * need to burn the CD before we can do a whole lot with it.  So
2776          * we don't print anything here if we get an error back.
2777          */
2778         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2779                           SF_NO_PRINT);
2780         /*
2781          * Errors in reading the table of contents aren't fatal, we just
2782          * won't have a valid table of contents cached.
2783          */
2784         if (error != 0) {
2785                 error = 0;
2786                 bzero(&softc->toc, sizeof(softc->toc));
2787                 goto bailout;
2788         }
2789
2790         if (softc->quirks & CD_Q_BCD_TRACKS) {
2791                 toch->starting_track = bcd2bin(toch->starting_track);
2792                 toch->ending_track = bcd2bin(toch->ending_track);
2793         }
2794
2795         /* Number of TOC entries, plus leadout */
2796         num_entries = (toch->ending_track - toch->starting_track) + 2;
2797
2798         if (num_entries <= 0)
2799                 goto bailout;
2800
2801         toclen = num_entries * sizeof(struct cd_toc_entry);
2802
2803         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2804                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2805                           SF_NO_PRINT);
2806         if (error != 0) {
2807                 error = 0;
2808                 bzero(&softc->toc, sizeof(softc->toc));
2809                 goto bailout;
2810         }
2811
2812         if (softc->quirks & CD_Q_BCD_TRACKS) {
2813                 toch->starting_track = bcd2bin(toch->starting_track);
2814                 toch->ending_track = bcd2bin(toch->ending_track);
2815         }
2816         /*
2817          * XXX KDM is this necessary?  Probably only if the drive doesn't
2818          * return leadout information with the table of contents.
2819          */
2820         cdindex = toch->starting_track + num_entries -1;
2821         if (cdindex == toch->ending_track + 1) {
2822
2823                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT, 
2824                                   (u_int8_t *)&leadout, sizeof(leadout),
2825                                   SF_NO_PRINT);
2826                 if (error != 0) {
2827                         error = 0;
2828                         goto bailout;
2829                 }
2830                 softc->toc.entries[cdindex - toch->starting_track] =
2831                         leadout.entry;
2832         }
2833         if (softc->quirks & CD_Q_BCD_TRACKS) {
2834                 for (cdindex = 0; cdindex < num_entries - 1; cdindex++) {
2835                         softc->toc.entries[cdindex].track =
2836                                 bcd2bin(softc->toc.entries[cdindex].track);
2837                 }
2838         }
2839
2840         softc->flags |= CD_FLAG_VALID_TOC;
2841         softc->disk->d_maxsize = DFLTPHYS;
2842         softc->disk->d_sectorsize = softc->params.blksize;
2843         softc->disk->d_mediasize =
2844             (off_t)softc->params.blksize * softc->params.disksize;
2845
2846 bailout:
2847
2848         /*
2849          * We unconditionally (re)set the blocksize each time the
2850          * CD device is opened.  This is because the CD can change,
2851          * and therefore the blocksize might change.
2852          * XXX problems here if some slice or partition is still
2853          * open with the old size?
2854          */
2855         if ((softc->disk->d_devstat->flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2856                 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
2857         softc->disk->d_devstat->block_size = softc->params.blksize;
2858
2859         return (error);
2860 }
2861
2862 static int
2863 cdsize(struct cam_periph *periph, u_int32_t *size)
2864 {
2865         struct cd_softc *softc;
2866         union ccb *ccb;
2867         struct scsi_read_capacity_data *rcap_buf;
2868         int error;
2869
2870         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
2871
2872         softc = (struct cd_softc *)periph->softc;
2873              
2874         ccb = cdgetccb(periph, /* priority */ 1);
2875
2876         rcap_buf = malloc(sizeof(struct scsi_read_capacity_data), 
2877                           M_TEMP, M_WAITOK);
2878
2879         scsi_read_capacity(&ccb->csio, 
2880                            /*retries*/ 1,
2881                            cddone,
2882                            MSG_SIMPLE_Q_TAG,
2883                            rcap_buf,
2884                            SSD_FULL_SIZE,
2885                            /* timeout */20000);
2886
2887         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2888                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2889
2890         xpt_release_ccb(ccb);
2891
2892         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
2893         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
2894         /*
2895          * SCSI-3 mandates that the reported blocksize shall be 2048.
2896          * Older drives sometimes report funny values, trim it down to
2897          * 2048, or other parts of the kernel will get confused.
2898          *
2899          * XXX we leave drives alone that might report 512 bytes, as
2900          * well as drives reporting more weird sizes like perhaps 4K.
2901          */
2902         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
2903                 softc->params.blksize = 2048;
2904
2905         free(rcap_buf, M_TEMP);
2906         *size = softc->params.disksize;
2907
2908         return (error);
2909
2910 }
2911
2912 static int
2913 cd6byteworkaround(union ccb *ccb)
2914 {
2915         u_int8_t *cdb;
2916         struct cam_periph *periph;
2917         struct cd_softc *softc;
2918         struct cd_mode_params *params;
2919         int frozen, found;
2920
2921         periph = xpt_path_periph(ccb->ccb_h.path);
2922         softc = (struct cd_softc *)periph->softc;
2923
2924         cdb = ccb->csio.cdb_io.cdb_bytes;
2925
2926         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
2927          || ((cdb[0] != MODE_SENSE_6)
2928           && (cdb[0] != MODE_SELECT_6)))
2929                 return (0);
2930
2931         /*
2932          * Because there is no convenient place to stash the overall
2933          * cd_mode_params structure pointer, we have to grab it like this.
2934          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
2935          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
2936          *
2937          * XXX It would be nice if, at some point, we could increase the
2938          * number of available peripheral private pointers.  Both pointers
2939          * are currently used in most every peripheral driver.
2940          */
2941         found = 0;
2942
2943         STAILQ_FOREACH(params, &softc->mode_queue, links) {
2944                 if (params->mode_buf == ccb->csio.data_ptr) {
2945                         found = 1;
2946                         break;
2947                 }
2948         }
2949
2950         /*
2951          * This shouldn't happen.  All mode sense and mode select
2952          * operations in the cd(4) driver MUST go through cdgetmode() and
2953          * cdsetmode()!
2954          */
2955         if (found == 0) {
2956                 xpt_print_path(periph->path);
2957                 printf("mode buffer not found in mode queue!\n");
2958                 return (0);
2959         }
2960
2961         params->cdb_size = 10;
2962         softc->minimum_command_size = 10;
2963         xpt_print_path(ccb->ccb_h.path);
2964         printf("%s(6) failed, increasing minimum CDB size to 10 bytes\n",
2965                (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
2966
2967         if (cdb[0] == MODE_SENSE_6) {
2968                 struct scsi_mode_sense_10 ms10;
2969                 struct scsi_mode_sense_6 *ms6;
2970                 int len;
2971
2972                 ms6 = (struct scsi_mode_sense_6 *)cdb;
2973
2974                 bzero(&ms10, sizeof(ms10));
2975                 ms10.opcode = MODE_SENSE_10;
2976                 ms10.byte2 = ms6->byte2;
2977                 ms10.page = ms6->page;
2978
2979                 /*
2980                  * 10 byte mode header, block descriptor,
2981                  * sizeof(union cd_pages)
2982                  */
2983                 len = sizeof(struct cd_mode_data_10);
2984                 ccb->csio.dxfer_len = len;
2985
2986                 scsi_ulto2b(len, ms10.length);
2987                 ms10.control = ms6->control;
2988                 bcopy(&ms10, cdb, 10);
2989                 ccb->csio.cdb_len = 10;
2990         } else {
2991                 struct scsi_mode_select_10 ms10;
2992                 struct scsi_mode_select_6 *ms6;
2993                 struct scsi_mode_header_6 *header6;
2994                 struct scsi_mode_header_10 *header10;
2995                 struct scsi_mode_page_header *page_header;
2996                 int blk_desc_len, page_num, page_size, len;
2997
2998                 ms6 = (struct scsi_mode_select_6 *)cdb;
2999
3000                 bzero(&ms10, sizeof(ms10));
3001                 ms10.opcode = MODE_SELECT_10;
3002                 ms10.byte2 = ms6->byte2;
3003
3004                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3005                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3006
3007                 page_header = find_mode_page_6(header6);
3008                 page_num = page_header->page_code;
3009
3010                 blk_desc_len = header6->blk_desc_len;
3011
3012                 page_size = cdgetpagesize(page_num);
3013
3014                 if (page_size != (page_header->page_length +
3015                     sizeof(*page_header)))
3016                         page_size = page_header->page_length +
3017                                 sizeof(*page_header);
3018
3019                 len = sizeof(*header10) + blk_desc_len + page_size;
3020
3021                 len = min(params->alloc_len, len);
3022
3023                 /*
3024                  * Since the 6 byte parameter header is shorter than the 10
3025                  * byte parameter header, we need to copy the actual mode
3026                  * page data, and the block descriptor, if any, so things wind
3027                  * up in the right place.  The regions will overlap, but
3028                  * bcopy() does the right thing.
3029                  */
3030                 bcopy(params->mode_buf + sizeof(*header6),
3031                       params->mode_buf + sizeof(*header10),
3032                       len - sizeof(*header10));
3033
3034                 /* Make sure these fields are set correctly. */
3035                 scsi_ulto2b(0, header10->data_length);
3036                 header10->medium_type = 0;
3037                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3038
3039                 ccb->csio.dxfer_len = len;
3040
3041                 scsi_ulto2b(len, ms10.length);
3042                 ms10.control = ms6->control;
3043                 bcopy(&ms10, cdb, 10);
3044                 ccb->csio.cdb_len = 10;
3045         }
3046
3047         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3048         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3049         xpt_action(ccb);
3050         if (frozen) {
3051                 cam_release_devq(ccb->ccb_h.path,
3052                                  /*relsim_flags*/0,
3053                                  /*openings*/0,
3054                                  /*timeout*/0,
3055                                  /*getcount_only*/0);
3056         }
3057
3058         return (ERESTART);
3059 }
3060
3061 static int
3062 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3063 {
3064         struct cd_softc *softc;
3065         struct cam_periph *periph;
3066         int error;
3067
3068         periph = xpt_path_periph(ccb->ccb_h.path);
3069         softc = (struct cd_softc *)periph->softc;
3070
3071         error = 0;
3072
3073         /*
3074          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3075          * CDB comes back with this particular error, try transforming it
3076          * into the 10 byte version.
3077          */
3078         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3079                 error = cd6byteworkaround(ccb);
3080         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3081                      CAM_SCSI_STATUS_ERROR)
3082          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3083          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3084          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3085          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3086                 int sense_key, error_code, asc, ascq;
3087
3088                 scsi_extract_sense(&ccb->csio.sense_data,
3089                                    &error_code, &sense_key, &asc, &ascq);
3090                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3091                         error = cd6byteworkaround(ccb);
3092         }
3093
3094         if (error == ERESTART)
3095                 return (error);
3096
3097         /*
3098          * XXX
3099          * Until we have a better way of doing pack validation,
3100          * don't treat UAs as errors.
3101          */
3102         sense_flags |= SF_RETRY_UA;
3103         return (cam_periph_error(ccb, cam_flags, sense_flags, 
3104                                  &softc->saved_ccb));
3105 }
3106
3107 /*
3108  * Read table of contents
3109  */
3110 static int 
3111 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start, 
3112           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3113 {
3114         struct scsi_read_toc *scsi_cmd;
3115         u_int32_t ntoc;
3116         struct ccb_scsiio *csio;
3117         union ccb *ccb;
3118         int error;
3119
3120         ntoc = len;
3121         error = 0;
3122
3123         ccb = cdgetccb(periph, /* priority */ 1);
3124
3125         csio = &ccb->csio;
3126
3127         cam_fill_csio(csio, 
3128                       /* retries */ 1, 
3129                       /* cbfcnp */ cddone, 
3130                       /* flags */ CAM_DIR_IN,
3131                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3132                       /* data_ptr */ data,
3133                       /* dxfer_len */ len,
3134                       /* sense_len */ SSD_FULL_SIZE,
3135                       sizeof(struct scsi_read_toc),
3136                       /* timeout */ 50000);
3137
3138         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3139         bzero (scsi_cmd, sizeof(*scsi_cmd));
3140
3141         if (mode == CD_MSF_FORMAT)
3142                 scsi_cmd->byte2 |= CD_MSF;
3143         scsi_cmd->from_track = start;
3144         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3145         scsi_cmd->data_len[0] = (ntoc) >> 8;
3146         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3147
3148         scsi_cmd->op_code = READ_TOC;
3149
3150         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3151                          /*sense_flags*/SF_RETRY_UA | sense_flags);
3152
3153         xpt_release_ccb(ccb);
3154
3155         return(error);
3156 }
3157
3158 static int
3159 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode, 
3160                  u_int32_t format, int track, 
3161                  struct cd_sub_channel_info *data, u_int32_t len) 
3162 {
3163         struct scsi_read_subchannel *scsi_cmd;
3164         struct ccb_scsiio *csio;
3165         union ccb *ccb;
3166         int error;
3167
3168         error = 0;
3169
3170         ccb = cdgetccb(periph, /* priority */ 1);
3171
3172         csio = &ccb->csio;
3173
3174         cam_fill_csio(csio, 
3175                       /* retries */ 1, 
3176                       /* cbfcnp */ cddone, 
3177                       /* flags */ CAM_DIR_IN,
3178                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3179                       /* data_ptr */ (u_int8_t *)data,
3180                       /* dxfer_len */ len,
3181                       /* sense_len */ SSD_FULL_SIZE,
3182                       sizeof(struct scsi_read_subchannel),
3183                       /* timeout */ 50000);
3184
3185         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3186         bzero (scsi_cmd, sizeof(*scsi_cmd));
3187
3188         scsi_cmd->op_code = READ_SUBCHANNEL;
3189         if (mode == CD_MSF_FORMAT)
3190                 scsi_cmd->byte1 |= CD_MSF;
3191         scsi_cmd->byte2 = SRS_SUBQ;
3192         scsi_cmd->subchan_format = format;
3193         scsi_cmd->track = track;
3194         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3195         scsi_cmd->control = 0;
3196
3197         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3198                          /*sense_flags*/SF_RETRY_UA);
3199
3200         xpt_release_ccb(ccb);
3201
3202         return(error);
3203 }
3204
3205
3206 /*
3207  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3208  * routine.  See comments in cd6byteworkaround() for details.
3209  */
3210 static int
3211 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3212           u_int32_t page)
3213 {
3214         struct ccb_scsiio *csio;
3215         struct cd_softc *softc;
3216         union ccb *ccb;
3217         int param_len;
3218         int error;
3219
3220         softc = (struct cd_softc *)periph->softc;
3221
3222         ccb = cdgetccb(periph, /* priority */ 1);
3223
3224         csio = &ccb->csio;
3225
3226         data->cdb_size = softc->minimum_command_size;
3227         if (data->cdb_size < 10)
3228                 param_len = sizeof(struct cd_mode_data);
3229         else
3230                 param_len = sizeof(struct cd_mode_data_10);
3231
3232         /* Don't say we've got more room than we actually allocated */
3233         param_len = min(param_len, data->alloc_len);
3234
3235         scsi_mode_sense_len(csio,
3236                             /* retries */ 1,
3237                             /* cbfcnp */ cddone,
3238                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3239                             /* dbd */ 0,
3240                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3241                             /* page */ page,
3242                             /* param_buf */ data->mode_buf,
3243                             /* param_len */ param_len,
3244                             /* minimum_cmd_size */ softc->minimum_command_size,
3245                             /* sense_len */ SSD_FULL_SIZE,
3246                             /* timeout */ 50000);
3247
3248         /*
3249          * It would be nice not to have to do this, but there's no
3250          * available pointer in the CCB that would allow us to stuff the
3251          * mode params structure in there and retrieve it in
3252          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3253          * lets the caller know what CDB size we ended up using, so they
3254          * can find the actual mode page offset.
3255          */
3256         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3257
3258         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3259                          /*sense_flags*/SF_RETRY_UA);
3260
3261         xpt_release_ccb(ccb);
3262
3263         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3264
3265         /*
3266          * This is a bit of belt-and-suspenders checking, but if we run
3267          * into a situation where the target sends back multiple block
3268          * descriptors, we might not have enough space in the buffer to
3269          * see the whole mode page.  Better to return an error than
3270          * potentially access memory beyond our malloced region.
3271          */
3272         if (error == 0) {
3273                 u_int32_t data_len;
3274
3275                 if (data->cdb_size == 10) {
3276                         struct scsi_mode_header_10 *hdr10;
3277
3278                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3279                         data_len = scsi_2btoul(hdr10->data_length);
3280                         data_len += sizeof(hdr10->data_length);
3281                 } else {
3282                         struct scsi_mode_header_6 *hdr6;
3283
3284                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3285                         data_len = hdr6->data_length;
3286                         data_len += sizeof(hdr6->data_length);
3287                 }
3288
3289                 /*
3290                  * Complain if there is more mode data available than we
3291                  * allocated space for.  This could potentially happen if
3292                  * we miscalculated the page length for some reason, if the
3293                  * drive returns multiple block descriptors, or if it sets
3294                  * the data length incorrectly.
3295                  */
3296                 if (data_len > data->alloc_len) {
3297                         xpt_print_path(periph->path);
3298                         printf("allocated modepage %d length %d < returned "
3299                                "length %d\n", page, data->alloc_len, data_len);
3300
3301                         error = ENOSPC;
3302                 }
3303         }
3304         return (error);
3305 }
3306
3307 /*
3308  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3309  * routine.  See comments in cd6byteworkaround() for details.
3310  */
3311 static int
3312 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3313 {
3314         struct ccb_scsiio *csio;
3315         struct cd_softc *softc;
3316         union ccb *ccb;
3317         int cdb_size, param_len;
3318         int error;
3319
3320         softc = (struct cd_softc *)periph->softc;
3321
3322         ccb = cdgetccb(periph, /* priority */ 1);
3323
3324         csio = &ccb->csio;
3325
3326         error = 0;
3327
3328         /*
3329          * If the data is formatted for the 10 byte version of the mode
3330          * select parameter list, we need to use the 10 byte CDB.
3331          * Otherwise, we use whatever the stored minimum command size.
3332          */
3333         if (data->cdb_size == 10)
3334                 cdb_size = data->cdb_size;
3335         else
3336                 cdb_size = softc->minimum_command_size;
3337
3338         if (cdb_size >= 10) {
3339                 struct scsi_mode_header_10 *mode_header;
3340                 u_int32_t data_len;
3341
3342                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3343
3344                 data_len = scsi_2btoul(mode_header->data_length);
3345
3346                 scsi_ulto2b(0, mode_header->data_length);
3347                 /*
3348                  * SONY drives do not allow a mode select with a medium_type
3349                  * value that has just been returned by a mode sense; use a
3350                  * medium_type of 0 (Default) instead.
3351                  */
3352                 mode_header->medium_type = 0;
3353
3354                 /*
3355                  * Pass back whatever the drive passed to us, plus the size
3356                  * of the data length field.
3357                  */
3358                 param_len = data_len + sizeof(mode_header->data_length);
3359
3360         } else {
3361                 struct scsi_mode_header_6 *mode_header;
3362
3363                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3364
3365                 param_len = mode_header->data_length + 1;
3366
3367                 mode_header->data_length = 0;
3368                 /*
3369                  * SONY drives do not allow a mode select with a medium_type
3370                  * value that has just been returned by a mode sense; use a
3371                  * medium_type of 0 (Default) instead.
3372                  */
3373                 mode_header->medium_type = 0;
3374         }
3375
3376         /* Don't say we've got more room than we actually allocated */
3377         param_len = min(param_len, data->alloc_len);
3378
3379         scsi_mode_select_len(csio,
3380                              /* retries */ 1,
3381                              /* cbfcnp */ cddone,
3382                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3383                              /* scsi_page_fmt */ 1,
3384                              /* save_pages */ 0,
3385                              /* param_buf */ data->mode_buf,
3386                              /* param_len */ param_len,
3387                              /* minimum_cmd_size */ cdb_size,
3388                              /* sense_len */ SSD_FULL_SIZE,
3389                              /* timeout */ 50000);
3390
3391         /* See comments in cdgetmode() and cd6byteworkaround(). */
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         return (error);
3402 }
3403
3404
3405 static int 
3406 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3407 {
3408         struct ccb_scsiio *csio;
3409         union ccb *ccb;
3410         int error;
3411         u_int8_t cdb_len;
3412
3413         error = 0;
3414         ccb = cdgetccb(periph, /* priority */ 1);
3415         csio = &ccb->csio;
3416         /*
3417          * Use the smallest possible command to perform the operation.
3418          */
3419         if ((len & 0xffff0000) == 0) {
3420                 /*
3421                  * We can fit in a 10 byte cdb.
3422                  */
3423                 struct scsi_play_10 *scsi_cmd;
3424
3425                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3426                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3427                 scsi_cmd->op_code = PLAY_10;
3428                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3429                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3430                 cdb_len = sizeof(*scsi_cmd);
3431         } else  {
3432                 struct scsi_play_12 *scsi_cmd;
3433
3434                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3435                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3436                 scsi_cmd->op_code = PLAY_12;
3437                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3438                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3439                 cdb_len = sizeof(*scsi_cmd);
3440         }
3441         cam_fill_csio(csio,
3442                       /*retries*/2,
3443                       cddone,
3444                       /*flags*/CAM_DIR_NONE,
3445                       MSG_SIMPLE_Q_TAG,
3446                       /*dataptr*/NULL,
3447                       /*datalen*/0,
3448                       /*sense_len*/SSD_FULL_SIZE,
3449                       cdb_len,
3450                       /*timeout*/50 * 1000);
3451
3452         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3453                          /*sense_flags*/SF_RETRY_UA);
3454
3455         xpt_release_ccb(ccb);
3456
3457         return(error);
3458 }
3459
3460 static int
3461 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3462           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3463 {
3464         struct scsi_play_msf *scsi_cmd;
3465         struct ccb_scsiio *csio;
3466         union ccb *ccb;
3467         int error;
3468
3469         error = 0;
3470
3471         ccb = cdgetccb(periph, /* priority */ 1);
3472
3473         csio = &ccb->csio;
3474
3475         cam_fill_csio(csio, 
3476                       /* retries */ 1, 
3477                       /* cbfcnp */ cddone, 
3478                       /* flags */ CAM_DIR_NONE,
3479                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3480                       /* data_ptr */ NULL,
3481                       /* dxfer_len */ 0,
3482                       /* sense_len */ SSD_FULL_SIZE,
3483                       sizeof(struct scsi_play_msf),
3484                       /* timeout */ 50000);
3485
3486         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3487         bzero (scsi_cmd, sizeof(*scsi_cmd));
3488
3489         scsi_cmd->op_code = PLAY_MSF;
3490         scsi_cmd->start_m = startm;
3491         scsi_cmd->start_s = starts;
3492         scsi_cmd->start_f = startf;
3493         scsi_cmd->end_m = endm;
3494         scsi_cmd->end_s = ends;
3495         scsi_cmd->end_f = endf; 
3496
3497         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3498                          /*sense_flags*/SF_RETRY_UA);
3499         
3500         xpt_release_ccb(ccb);
3501
3502         return(error);
3503 }
3504
3505
3506 static int
3507 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3508              u_int32_t etrack, u_int32_t eindex)
3509 {
3510         struct scsi_play_track *scsi_cmd;
3511         struct ccb_scsiio *csio;
3512         union ccb *ccb;
3513         int error;
3514
3515         error = 0;
3516
3517         ccb = cdgetccb(periph, /* priority */ 1);
3518
3519         csio = &ccb->csio;
3520
3521         cam_fill_csio(csio, 
3522                       /* retries */ 1, 
3523                       /* cbfcnp */ cddone, 
3524                       /* flags */ CAM_DIR_NONE,
3525                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3526                       /* data_ptr */ NULL,
3527                       /* dxfer_len */ 0,
3528                       /* sense_len */ SSD_FULL_SIZE,
3529                       sizeof(struct scsi_play_track),
3530                       /* timeout */ 50000);
3531
3532         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3533         bzero (scsi_cmd, sizeof(*scsi_cmd));
3534
3535         scsi_cmd->op_code = PLAY_TRACK;
3536         scsi_cmd->start_track = strack;
3537         scsi_cmd->start_index = sindex;
3538         scsi_cmd->end_track = etrack;
3539         scsi_cmd->end_index = eindex;
3540
3541         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3542                          /*sense_flags*/SF_RETRY_UA);
3543
3544         xpt_release_ccb(ccb);
3545
3546         return(error);
3547 }
3548
3549 static int
3550 cdpause(struct cam_periph *periph, u_int32_t go)
3551 {
3552         struct scsi_pause *scsi_cmd;
3553         struct ccb_scsiio *csio;
3554         union ccb *ccb;
3555         int error;
3556
3557         error = 0;
3558
3559         ccb = cdgetccb(periph, /* priority */ 1);
3560
3561         csio = &ccb->csio;
3562
3563         cam_fill_csio(csio, 
3564                       /* retries */ 1, 
3565                       /* cbfcnp */ cddone, 
3566                       /* flags */ CAM_DIR_NONE,
3567                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3568                       /* data_ptr */ NULL,
3569                       /* dxfer_len */ 0,
3570                       /* sense_len */ SSD_FULL_SIZE,
3571                       sizeof(struct scsi_pause),
3572                       /* timeout */ 50000);
3573
3574         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3575         bzero (scsi_cmd, sizeof(*scsi_cmd));
3576
3577         scsi_cmd->op_code = PAUSE;
3578         scsi_cmd->resume = go;
3579
3580         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3581                          /*sense_flags*/SF_RETRY_UA);
3582
3583         xpt_release_ccb(ccb);
3584
3585         return(error);
3586 }
3587
3588 static int
3589 cdstartunit(struct cam_periph *periph, int load)
3590 {
3591         union ccb *ccb;
3592         int error;
3593
3594         error = 0;
3595
3596         ccb = cdgetccb(periph, /* priority */ 1);
3597
3598         scsi_start_stop(&ccb->csio,
3599                         /* retries */ 1,
3600                         /* cbfcnp */ cddone,
3601                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3602                         /* start */ TRUE,
3603                         /* load_eject */ load,
3604                         /* immediate */ FALSE,
3605                         /* sense_len */ SSD_FULL_SIZE,
3606                         /* timeout */ 50000);
3607
3608         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3609                          /*sense_flags*/SF_RETRY_UA);
3610
3611         xpt_release_ccb(ccb);
3612
3613         return(error);
3614 }
3615
3616 static int
3617 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3618 {
3619         union ccb *ccb;
3620         int error;
3621
3622         error = 0;
3623
3624         ccb = cdgetccb(periph, /* priority */ 1);
3625
3626         scsi_start_stop(&ccb->csio,
3627                         /* retries */ 1,
3628                         /* cbfcnp */ cddone,
3629                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3630                         /* start */ FALSE,
3631                         /* load_eject */ eject,
3632                         /* immediate */ FALSE,
3633                         /* sense_len */ SSD_FULL_SIZE,
3634                         /* timeout */ 50000);
3635
3636         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3637                          /*sense_flags*/SF_RETRY_UA);
3638
3639         xpt_release_ccb(ccb);
3640
3641         return(error);
3642 }
3643
3644 static int
3645 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3646 {
3647         struct scsi_set_speed *scsi_cmd;
3648         struct ccb_scsiio *csio;
3649         union ccb *ccb;
3650         int error;
3651
3652         error = 0;
3653         ccb = cdgetccb(periph, /* priority */ 1);
3654         csio = &ccb->csio;
3655
3656         /* Preserve old behavior: units in multiples of CDROM speed */
3657         if (rdspeed < 177)
3658                 rdspeed *= 177;
3659         if (wrspeed < 177)
3660                 wrspeed *= 177;
3661
3662         cam_fill_csio(csio,
3663                       /* retries */ 1,
3664                       /* cbfcnp */ cddone,
3665                       /* flags */ CAM_DIR_NONE,
3666                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3667                       /* data_ptr */ NULL,
3668                       /* dxfer_len */ 0,
3669                       /* sense_len */ SSD_FULL_SIZE,
3670                       sizeof(struct scsi_set_speed),
3671                       /* timeout */ 50000);
3672
3673         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3674         bzero(scsi_cmd, sizeof(*scsi_cmd));
3675
3676         scsi_cmd->opcode = SET_CD_SPEED;
3677         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3678         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3679
3680         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3681                          /*sense_flags*/SF_RETRY_UA);
3682
3683         xpt_release_ccb(ccb);
3684
3685         return(error);
3686 }
3687
3688 static int
3689 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3690 {
3691         union ccb *ccb;
3692         u_int8_t *databuf;
3693         u_int32_t lba;
3694         int error;
3695         int length;
3696
3697         error = 0;
3698         databuf = NULL;
3699         lba = 0;
3700
3701         ccb = cdgetccb(periph, /* priority */ 1);
3702
3703         switch (authinfo->format) {
3704         case DVD_REPORT_AGID:
3705                 length = sizeof(struct scsi_report_key_data_agid);
3706                 break;
3707         case DVD_REPORT_CHALLENGE:
3708                 length = sizeof(struct scsi_report_key_data_challenge);
3709                 break;
3710         case DVD_REPORT_KEY1:
3711                 length = sizeof(struct scsi_report_key_data_key1_key2);
3712                 break;
3713         case DVD_REPORT_TITLE_KEY:
3714                 length = sizeof(struct scsi_report_key_data_title);
3715                 /* The lba field is only set for the title key */
3716                 lba = authinfo->lba;
3717                 break;
3718         case DVD_REPORT_ASF:
3719                 length = sizeof(struct scsi_report_key_data_asf);
3720                 break;
3721         case DVD_REPORT_RPC:
3722                 length = sizeof(struct scsi_report_key_data_rpc);
3723                 break;
3724         case DVD_INVALIDATE_AGID:
3725                 length = 0;
3726                 break;
3727         default:
3728                 error = EINVAL;
3729                 goto bailout;
3730                 break; /* NOTREACHED */
3731         }
3732
3733         if (length != 0) {
3734                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3735         } else
3736                 databuf = NULL;
3737
3738
3739         scsi_report_key(&ccb->csio,
3740                         /* retries */ 1,
3741                         /* cbfcnp */ cddone,
3742                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3743                         /* lba */ lba,
3744                         /* agid */ authinfo->agid,
3745                         /* key_format */ authinfo->format,
3746                         /* data_ptr */ databuf,
3747                         /* dxfer_len */ length,
3748                         /* sense_len */ SSD_FULL_SIZE,
3749                         /* timeout */ 50000);
3750
3751         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3752                          /*sense_flags*/SF_RETRY_UA);
3753
3754         if (error != 0)
3755                 goto bailout;
3756
3757         if (ccb->csio.resid != 0) {
3758                 xpt_print_path(periph->path);
3759                 printf("warning, residual for report key command is %d\n",
3760                        ccb->csio.resid);
3761         }
3762
3763         switch(authinfo->format) {
3764         case DVD_REPORT_AGID: {
3765                 struct scsi_report_key_data_agid *agid_data;
3766
3767                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3768
3769                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3770                         RKD_AGID_SHIFT;
3771                 break;
3772         }
3773         case DVD_REPORT_CHALLENGE: {
3774                 struct scsi_report_key_data_challenge *chal_data;
3775
3776                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3777
3778                 bcopy(chal_data->challenge_key, authinfo->keychal,
3779                       min(sizeof(chal_data->challenge_key),
3780                           sizeof(authinfo->keychal)));
3781                 break;
3782         }
3783         case DVD_REPORT_KEY1: {
3784                 struct scsi_report_key_data_key1_key2 *key1_data;
3785
3786                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3787
3788                 bcopy(key1_data->key1, authinfo->keychal,
3789                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3790                 break;
3791         }
3792         case DVD_REPORT_TITLE_KEY: {
3793                 struct scsi_report_key_data_title *title_data;
3794
3795                 title_data = (struct scsi_report_key_data_title *)databuf;
3796
3797                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3798                         RKD_TITLE_CPM_SHIFT;
3799                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3800                         RKD_TITLE_CP_SEC_SHIFT;
3801                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3802                         RKD_TITLE_CMGS_SHIFT;
3803                 bcopy(title_data->title_key, authinfo->keychal,
3804                       min(sizeof(title_data->title_key),
3805                           sizeof(authinfo->keychal)));
3806                 break;
3807         }
3808         case DVD_REPORT_ASF: {
3809                 struct scsi_report_key_data_asf *asf_data;
3810
3811                 asf_data = (struct scsi_report_key_data_asf *)databuf;
3812
3813                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3814                 break;
3815         }
3816         case DVD_REPORT_RPC: {
3817                 struct scsi_report_key_data_rpc *rpc_data;
3818
3819                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3820
3821                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3822                         RKD_RPC_TYPE_SHIFT;
3823                 authinfo->vend_rsts =
3824                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3825                         RKD_RPC_VENDOR_RESET_SHIFT;
3826                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3827                 authinfo->region = rpc_data->region_mask;
3828                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3829                 break;
3830         }
3831         case DVD_INVALIDATE_AGID:
3832                 break;
3833         default:
3834                 /* This should be impossible, since we checked above */
3835                 error = EINVAL;
3836                 goto bailout;
3837                 break; /* NOTREACHED */
3838         }
3839 bailout:
3840         if (databuf != NULL)
3841                 free(databuf, M_DEVBUF);
3842
3843         xpt_release_ccb(ccb);
3844
3845         return(error);
3846 }
3847
3848 static int
3849 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3850 {
3851         union ccb *ccb;
3852         u_int8_t *databuf;
3853         int length;
3854         int error;
3855
3856         error = 0;
3857         databuf = NULL;
3858
3859         ccb = cdgetccb(periph, /* priority */ 1);
3860
3861         switch(authinfo->format) {
3862         case DVD_SEND_CHALLENGE: {
3863                 struct scsi_report_key_data_challenge *challenge_data;
3864
3865                 length = sizeof(*challenge_data);
3866
3867                 challenge_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3868
3869                 databuf = (u_int8_t *)challenge_data;
3870
3871                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
3872                             challenge_data->data_len);
3873
3874                 bcopy(authinfo->keychal, challenge_data->challenge_key,
3875                       min(sizeof(authinfo->keychal),
3876                           sizeof(challenge_data->challenge_key)));
3877                 break;
3878         }
3879         case DVD_SEND_KEY2: {
3880                 struct scsi_report_key_data_key1_key2 *key2_data;
3881
3882                 length = sizeof(*key2_data);
3883
3884                 key2_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3885
3886                 databuf = (u_int8_t *)key2_data;
3887
3888                 scsi_ulto2b(length - sizeof(key2_data->data_len),
3889                             key2_data->data_len);
3890
3891                 bcopy(authinfo->keychal, key2_data->key1,
3892                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
3893
3894                 break;
3895         }
3896         case DVD_SEND_RPC: {
3897                 struct scsi_send_key_data_rpc *rpc_data;
3898
3899                 length = sizeof(*rpc_data);
3900
3901                 rpc_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3902
3903                 databuf = (u_int8_t *)rpc_data;
3904
3905                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
3906                             rpc_data->data_len);
3907
3908                 rpc_data->region_code = authinfo->region;
3909                 break;
3910         }
3911         default:
3912                 error = EINVAL;
3913                 goto bailout;
3914                 break; /* NOTREACHED */
3915         }
3916
3917         scsi_send_key(&ccb->csio,
3918                       /* retries */ 1,
3919                       /* cbfcnp */ cddone,
3920                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3921                       /* agid */ authinfo->agid,
3922                       /* key_format */ authinfo->format,
3923                       /* data_ptr */ databuf,
3924                       /* dxfer_len */ length,
3925                       /* sense_len */ SSD_FULL_SIZE,
3926                       /* timeout */ 50000);
3927
3928         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3929                          /*sense_flags*/SF_RETRY_UA);
3930
3931 bailout:
3932
3933         if (databuf != NULL)
3934                 free(databuf, M_DEVBUF);
3935
3936         xpt_release_ccb(ccb);
3937
3938         return(error);
3939 }
3940
3941 static int
3942 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
3943 {
3944         union ccb *ccb;
3945         u_int8_t *databuf;
3946         u_int32_t address;
3947         int error;
3948         int length;
3949
3950         error = 0;
3951         databuf = NULL;
3952         /* The address is reserved for many of the formats */
3953         address = 0;
3954
3955         ccb = cdgetccb(periph, /* priority */ 1);
3956
3957         switch(dvdstruct->format) {
3958         case DVD_STRUCT_PHYSICAL:
3959                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
3960                 break;
3961         case DVD_STRUCT_COPYRIGHT:
3962                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
3963                 break;
3964         case DVD_STRUCT_DISCKEY:
3965                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
3966                 break;
3967         case DVD_STRUCT_BCA:
3968                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
3969                 break;
3970         case DVD_STRUCT_MANUFACT:
3971                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
3972                 break;
3973         case DVD_STRUCT_CMI:
3974                 error = ENODEV;
3975                 goto bailout;
3976 #ifdef notyet
3977                 length = sizeof(struct scsi_read_dvd_struct_data_copy_manage);
3978                 address = dvdstruct->address;
3979 #endif
3980                 break; /* NOTREACHED */
3981         case DVD_STRUCT_PROTDISCID:
3982                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
3983                 break;
3984         case DVD_STRUCT_DISCKEYBLOCK:
3985                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
3986                 break;
3987         case DVD_STRUCT_DDS:
3988                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
3989                 break;
3990         case DVD_STRUCT_MEDIUM_STAT:
3991                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
3992                 break;
3993         case DVD_STRUCT_SPARE_AREA:
3994                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
3995                 break;
3996         case DVD_STRUCT_RMD_LAST:
3997                 error = ENODEV;
3998                 goto bailout;
3999 #ifdef notyet
4000                 length = sizeof(struct scsi_read_dvd_struct_data_rmd_borderout);
4001                 address = dvdstruct->address;
4002 #endif
4003                 break; /* NOTREACHED */
4004         case DVD_STRUCT_RMD_RMA:
4005                 error = ENODEV;
4006                 goto bailout;
4007 #ifdef notyet
4008                 length = sizeof(struct scsi_read_dvd_struct_data_rmd);
4009                 address = dvdstruct->address;
4010 #endif
4011                 break; /* NOTREACHED */
4012         case DVD_STRUCT_PRERECORDED:
4013                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4014                 break;
4015         case DVD_STRUCT_UNIQUEID:
4016                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4017                 break;
4018         case DVD_STRUCT_DCB:
4019                 error = ENODEV;
4020                 goto bailout;
4021 #ifdef notyet
4022                 length = sizeof(struct scsi_read_dvd_struct_data_dcb);
4023                 address = dvdstruct->address;
4024 #endif
4025                 break; /* NOTREACHED */
4026         case DVD_STRUCT_LIST:
4027                 /*
4028                  * This is the maximum allocation length for the READ DVD
4029                  * STRUCTURE command.  There's nothing in the MMC3 spec
4030                  * that indicates a limit in the amount of data that can
4031                  * be returned from this call, other than the limits
4032                  * imposed by the 2-byte length variables.
4033                  */
4034                 length = 65535;
4035                 break;
4036         default:
4037                 error = EINVAL;
4038                 goto bailout;
4039                 break; /* NOTREACHED */
4040         }
4041
4042         if (length != 0) {
4043                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4044         } else
4045                 databuf = NULL;
4046
4047         scsi_read_dvd_structure(&ccb->csio,
4048                                 /* retries */ 1,
4049                                 /* cbfcnp */ cddone,
4050                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4051                                 /* lba */ address,
4052                                 /* layer_number */ dvdstruct->layer_num,
4053                                 /* key_format */ dvdstruct->format,
4054                                 /* agid */ dvdstruct->agid,
4055                                 /* data_ptr */ databuf,
4056                                 /* dxfer_len */ length,
4057                                 /* sense_len */ SSD_FULL_SIZE,
4058                                 /* timeout */ 50000);
4059
4060         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4061                          /*sense_flags*/SF_RETRY_UA);
4062
4063         if (error != 0)
4064                 goto bailout;
4065
4066         switch(dvdstruct->format) {
4067         case DVD_STRUCT_PHYSICAL: {
4068                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4069                 struct dvd_layer *outlayer;
4070                 struct scsi_read_dvd_struct_data_physical *phys_data;
4071
4072                 phys_data =
4073                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4074                 inlayer = &phys_data->layer_desc;
4075                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4076
4077                 dvdstruct->length = sizeof(*inlayer);
4078
4079                 outlayer->book_type = (inlayer->book_type_version &
4080                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4081                 outlayer->book_version = (inlayer->book_type_version &
4082                         RDSD_BOOK_VERSION_MASK);
4083                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4084                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4085                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4086                         RDSD_MAX_RATE_MASK);
4087                 outlayer->nlayers = (inlayer->layer_info &
4088                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4089                 outlayer->track_path = (inlayer->layer_info &
4090                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4091                 outlayer->layer_type = (inlayer->layer_info &
4092                         RDSD_LAYER_TYPE_MASK);
4093                 outlayer->linear_density = (inlayer->density &
4094                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4095                 outlayer->track_density = (inlayer->density &
4096                         RDSD_TRACK_DENSITY_MASK);
4097                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4098                         RDSD_BCA_SHIFT;
4099                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4100                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4101                 outlayer->end_sector_l0 =
4102                         scsi_3btoul(inlayer->end_sector_layer0);
4103                 break;
4104         }
4105         case DVD_STRUCT_COPYRIGHT: {
4106                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4107
4108                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4109                         databuf;
4110
4111                 dvdstruct->cpst = copy_data->cps_type;
4112                 dvdstruct->rmi = copy_data->region_info;
4113                 dvdstruct->length = 0;
4114
4115                 break;
4116         }
4117         default:
4118                 /*
4119                  * Tell the user what the overall length is, no matter
4120                  * what we can actually fit in the data buffer.
4121                  */
4122                 dvdstruct->length = length - ccb->csio.resid - 
4123                         sizeof(struct scsi_read_dvd_struct_data_header);
4124
4125                 /*
4126                  * But only actually copy out the smaller of what we read
4127                  * in or what the structure can take.
4128                  */
4129                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4130                       dvdstruct->data,
4131                       min(sizeof(dvdstruct->data), dvdstruct->length));
4132                 break;
4133         }
4134 bailout:
4135
4136         if (databuf != NULL)
4137                 free(databuf, M_DEVBUF);
4138
4139         xpt_release_ccb(ccb);
4140
4141         return(error);
4142 }
4143
4144 void
4145 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4146                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4147                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4148                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4149                 u_int8_t sense_len, u_int32_t timeout)
4150 {
4151         struct scsi_report_key *scsi_cmd;
4152
4153         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4154         bzero(scsi_cmd, sizeof(*scsi_cmd));
4155         scsi_cmd->opcode = REPORT_KEY;
4156         scsi_ulto4b(lba, scsi_cmd->lba);
4157         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4158         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4159                 (key_format & RK_KF_KEYFORMAT_MASK);
4160
4161         cam_fill_csio(csio,
4162                       retries,
4163                       cbfcnp,
4164                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4165                       tag_action,
4166                       /*data_ptr*/ data_ptr,
4167                       /*dxfer_len*/ dxfer_len,
4168                       sense_len,
4169                       sizeof(*scsi_cmd),
4170                       timeout);
4171 }
4172
4173 void
4174 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4175               void (*cbfcnp)(struct cam_periph *, union ccb *),
4176               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4177               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4178               u_int32_t timeout)
4179 {
4180         struct scsi_send_key *scsi_cmd;
4181
4182         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4183         bzero(scsi_cmd, sizeof(*scsi_cmd));
4184         scsi_cmd->opcode = SEND_KEY;
4185
4186         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4187         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4188                 (key_format & RK_KF_KEYFORMAT_MASK);
4189
4190         cam_fill_csio(csio,
4191                       retries,
4192                       cbfcnp,
4193                       /*flags*/ CAM_DIR_OUT,
4194                       tag_action,
4195                       /*data_ptr*/ data_ptr,
4196                       /*dxfer_len*/ dxfer_len,
4197                       sense_len,
4198                       sizeof(*scsi_cmd),
4199                       timeout);
4200 }
4201
4202
4203 void
4204 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4205                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4206                         u_int8_t tag_action, u_int32_t address,
4207                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4208                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4209                         u_int8_t sense_len, u_int32_t timeout)
4210 {
4211         struct scsi_read_dvd_structure *scsi_cmd;
4212
4213         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4214         bzero(scsi_cmd, sizeof(*scsi_cmd));
4215         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4216
4217         scsi_ulto4b(address, scsi_cmd->address);
4218         scsi_cmd->layer_number = layer_number;
4219         scsi_cmd->format = format;
4220         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4221         /* The AGID is the top two bits of this byte */
4222         scsi_cmd->agid = agid << 6;
4223
4224         cam_fill_csio(csio,
4225                       retries,
4226                       cbfcnp,
4227                       /*flags*/ CAM_DIR_IN,
4228                       tag_action,
4229                       /*data_ptr*/ data_ptr,
4230                       /*dxfer_len*/ dxfer_len,
4231                       sense_len,
4232                       sizeof(*scsi_cmd),
4233                       timeout);
4234 }