xref: /freebsd/sys/cam/scsi/scsi_cd.c (revision 5e3190f700637fcfc1a52daeaa4a031fdd2557c7)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 1997 Justin T. Gibbs.
5  * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Kenneth D. Merry.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions, and the following disclaimer,
13  *    without modification, immediately at the beginning of the file.
14  * 2. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29 
30 /*-
31  * Portions of this driver taken from the original FreeBSD cd driver.
32  * Written by Julian Elischer (julian@tfs.com)
33  * for TRW Financial Systems for use under the MACH(2.5) operating system.
34  *
35  * TRW Financial Systems, in accordance with their agreement with Carnegie
36  * Mellon University, makes this software available to CMU to distribute
37  * or use in any manner that they see fit as long as this message is kept with
38  * the software. For this reason TFS also grants any other persons or
39  * organisations permission to use or modify this software.
40  *
41  * TFS supplies this software to be publicly redistributed
42  * on the understanding that TFS is not responsible for the correct
43  * functioning of this software in any circumstances.
44  *
45  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
46  *
47  *      from: cd.c,v 1.83 1997/05/04 15:24:22 joerg Exp $
48  */
49 
50 #include <sys/cdefs.h>
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/proc.h>
65 #include <sys/sbuf.h>
66 #include <sys/sysctl.h>
67 #include <sys/taskqueue.h>
68 #include <geom/geom_disk.h>
69 
70 #include <cam/cam.h>
71 #include <cam/cam_ccb.h>
72 #include <cam/cam_periph.h>
73 #include <cam/cam_xpt_periph.h>
74 #include <cam/cam_queue.h>
75 #include <cam/cam_sim.h>
76 
77 #include <cam/scsi/scsi_message.h>
78 #include <cam/scsi/scsi_da.h>
79 #include <cam/scsi/scsi_cd.h>
80 
81 #define LEADOUT         0xaa            /* leadout toc entry */
82 
83 struct cd_params {
84 	uint32_t blksize;
85 	u_long    disksize;
86 };
87 
88 typedef enum {
89 	CD_Q_NONE		= 0x00,
90 	CD_Q_NO_TOUCH		= 0x01,
91 	CD_Q_BCD_TRACKS		= 0x02,
92 	CD_Q_10_BYTE_ONLY	= 0x10,
93 	CD_Q_RETRY_BUSY		= 0x40
94 } cd_quirks;
95 
96 #define CD_Q_BIT_STRING		\
97 	"\020"			\
98 	"\001NO_TOUCH"		\
99 	"\002BCD_TRACKS"	\
100 	"\00510_BYTE_ONLY"	\
101 	"\007RETRY_BUSY"
102 
103 typedef enum {
104 	CD_FLAG_INVALID		= 0x0001,
105 	CD_FLAG_NEW_DISC	= 0x0002,
106 	CD_FLAG_DISC_LOCKED	= 0x0004,
107 	CD_FLAG_DISC_REMOVABLE	= 0x0008,
108 	CD_FLAG_SAW_MEDIA	= 0x0010,
109 	CD_FLAG_ACTIVE		= 0x0080,
110 	CD_FLAG_SCHED_ON_COMP	= 0x0100,
111 	CD_FLAG_RETRY_UA	= 0x0200,
112 	CD_FLAG_VALID_MEDIA	= 0x0400,
113 	CD_FLAG_VALID_TOC	= 0x0800,
114 	CD_FLAG_SCTX_INIT	= 0x1000,
115 	CD_FLAG_MEDIA_WAIT	= 0x2000,
116 	CD_FLAG_MEDIA_SCAN_ACT	= 0x4000
117 } cd_flags;
118 
119 typedef enum {
120 	CD_CCB_PROBE		= 0x01,
121 	CD_CCB_BUFFER_IO	= 0x02,
122 	CD_CCB_TUR		= 0x03,
123 	CD_CCB_MEDIA_PREVENT	= 0x04,
124 	CD_CCB_MEDIA_ALLOW	= 0x05,
125 	CD_CCB_MEDIA_SIZE	= 0x06,
126 	CD_CCB_MEDIA_TOC_HDR	= 0x07,
127 	CD_CCB_MEDIA_TOC_FULL	= 0x08,
128 	CD_CCB_MEDIA_TOC_LEAD	= 0x09,
129 	CD_CCB_TYPE_MASK	= 0x0F,
130 	CD_CCB_RETRY_UA		= 0x10
131 } cd_ccb_state;
132 
133 #define ccb_state ppriv_field0
134 #define ccb_bp ppriv_ptr1
135 
136 /*
137  * According to the MMC-6 spec, 6.25.3.2.11, the lead-out is reported by
138  * READ_TOC as logical track 170, so at most 169 tracks may be reported.
139  */
140 struct cd_tocdata {
141 	struct ioc_toc_header header;
142 	struct cd_toc_entry entries[170];
143 };
144 
145 struct cd_toc_single {
146 	struct ioc_toc_header header;
147 	struct cd_toc_entry entry;
148 };
149 
150 typedef enum {
151 	CD_STATE_PROBE,
152 	CD_STATE_NORMAL,
153 	CD_STATE_MEDIA_PREVENT,
154 	CD_STATE_MEDIA_ALLOW,
155 	CD_STATE_MEDIA_SIZE,
156 	CD_STATE_MEDIA_TOC_HDR,
157 	CD_STATE_MEDIA_TOC_FULL,
158 	CD_STATE_MEDIA_TOC_LEAD
159 } cd_state;
160 
161 struct cd_softc {
162 	cam_pinfo		pinfo;
163 	cd_state		state;
164 	volatile cd_flags	flags;
165 	struct bio_queue_head	bio_queue;
166 	LIST_HEAD(, ccb_hdr)	pending_ccbs;
167 	struct cd_params	params;
168 	cd_quirks		quirks;
169 	struct cam_periph	*periph;
170 	int			minimum_command_size;
171 	int			outstanding_cmds;
172 	int			tur;
173 	struct task		sysctl_task;
174 	struct sysctl_ctx_list	sysctl_ctx;
175 	struct sysctl_oid	*sysctl_tree;
176 	STAILQ_HEAD(, cd_mode_params)	mode_queue;
177 	struct cd_tocdata	toc;
178 	int			toc_read_len;
179 	struct cd_toc_single	leadout;
180 	struct disk		*disk;
181 	struct callout		mediapoll_c;
182 
183 #define CD_ANNOUNCETMP_SZ 120
184 	char			announce_temp[CD_ANNOUNCETMP_SZ];
185 #define CD_ANNOUNCE_SZ 400
186 	char			announce_buf[CD_ANNOUNCE_SZ];
187 };
188 
189 struct cd_page_sizes {
190 	int page;
191 	int page_size;
192 };
193 
194 static struct cd_page_sizes cd_page_size_table[] =
195 {
196 	{ AUDIO_PAGE, sizeof(struct cd_audio_page)}
197 };
198 
199 struct cd_quirk_entry {
200 	struct scsi_inquiry_pattern inq_pat;
201 	cd_quirks quirks;
202 };
203 
204 /*
205  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
206  * your device hangs when it gets a 10 byte command.  Adding a quirk just
207  * to get rid of the informative diagnostic message is not acceptable.  All
208  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
209  * referenced in a comment along with the quirk) , and must be approved by
210  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
211  * be removed until the submitter can explain why they are needed.
212  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
213  * when the CAM_NEW_TRAN_CODE work is done.
214  */
215 static struct cd_quirk_entry cd_quirk_table[] =
216 {
217 	{
218 		{ T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
219 		/* quirks */ CD_Q_BCD_TRACKS
220 	},
221 	{
222 		/*
223 		 * VMware returns BUSY status when storage has transient
224 		 * connectivity problems, so better wait.
225 		 */
226 		{T_CDROM, SIP_MEDIA_REMOVABLE, "NECVMWar", "VMware IDE CDR10", "*"},
227 		/*quirks*/ CD_Q_RETRY_BUSY
228 	}
229 };
230 
231 #ifdef COMPAT_FREEBSD32
232 struct ioc_read_toc_entry32 {
233 	u_char	address_format;
234 	u_char	starting_track;
235 	u_short	data_len;
236 	uint32_t data;	/* (struct cd_toc_entry *) */
237 };
238 #define	CDIOREADTOCENTRYS_32	\
239     _IOC_NEWTYPE(CDIOREADTOCENTRYS, struct ioc_read_toc_entry32)
240 #endif
241 
242 static	disk_open_t	cdopen;
243 static	disk_close_t	cdclose;
244 static	disk_ioctl_t	cdioctl;
245 static	disk_strategy_t	cdstrategy;
246 
247 static	periph_init_t	cdinit;
248 static	periph_ctor_t	cdregister;
249 static	periph_dtor_t	cdcleanup;
250 static	periph_start_t	cdstart;
251 static	periph_oninv_t	cdoninvalidate;
252 static	void		cdasync(void *callback_arg, uint32_t code,
253 				struct cam_path *path, void *arg);
254 static	int		cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
255 static	int		cdrunccb(union ccb *ccb,
256 				 int (*error_routine)(union ccb *ccb,
257 						      uint32_t cam_flags,
258 						      uint32_t sense_flags),
259 				 uint32_t cam_flags, uint32_t sense_flags);
260 static	void		cddone(struct cam_periph *periph,
261 			       union ccb *start_ccb);
262 static	union cd_pages	*cdgetpage(struct cd_mode_params *mode_params);
263 static	int		cdgetpagesize(int page_num);
264 static	void		cdprevent(struct cam_periph *periph, int action);
265 static	void		cdmediaprobedone(struct cam_periph *periph);
266 static	int		cdcheckmedia(struct cam_periph *periph, int do_wait);
267 #if 0
268 static	int		cdsize(struct cam_periph *periph, uint32_t *size);
269 #endif
270 static	int		cd6byteworkaround(union ccb *ccb);
271 static	int		cderror(union ccb *ccb, uint32_t cam_flags,
272 				uint32_t sense_flags);
273 static	int		cdreadtoc(struct cam_periph *periph, uint32_t mode,
274 				  uint32_t start, uint8_t *data,
275 				  uint32_t len, uint32_t sense_flags);
276 static	int		cdgetmode(struct cam_periph *periph,
277 				  struct cd_mode_params *data, uint32_t page);
278 static	int		cdsetmode(struct cam_periph *periph,
279 				  struct cd_mode_params *data);
280 static	int		cdplay(struct cam_periph *periph, uint32_t blk,
281 			       uint32_t len);
282 static	int		cdreadsubchannel(struct cam_periph *periph,
283 					 uint32_t mode, uint32_t format,
284 					 int track,
285 					 struct cd_sub_channel_info *data,
286 					 uint32_t len);
287 static	int		cdplaymsf(struct cam_periph *periph, uint32_t startm,
288 				  uint32_t starts, uint32_t startf,
289 				  uint32_t endm, uint32_t ends,
290 				  uint32_t endf);
291 static	int		cdplaytracks(struct cam_periph *periph,
292 				     uint32_t strack, uint32_t sindex,
293 				     uint32_t etrack, uint32_t eindex);
294 static	int		cdpause(struct cam_periph *periph, uint32_t go);
295 static	int		cdstopunit(struct cam_periph *periph, uint32_t eject);
296 static	int		cdstartunit(struct cam_periph *periph, int load);
297 static	int		cdsetspeed(struct cam_periph *periph,
298 				   uint32_t rdspeed, uint32_t wrspeed);
299 static	int		cdreportkey(struct cam_periph *periph,
300 				    struct dvd_authinfo *authinfo);
301 static	int		cdsendkey(struct cam_periph *periph,
302 				  struct dvd_authinfo *authinfo);
303 static	int		cdreaddvdstructure(struct cam_periph *periph,
304 					   struct dvd_struct *dvdstruct);
305 static	callout_func_t	cdmediapoll;
306 
307 static struct periph_driver cddriver =
308 {
309 	cdinit, "cd",
310 	TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
311 };
312 
313 PERIPHDRIVER_DECLARE(cd, cddriver);
314 
315 #ifndef	CD_DEFAULT_POLL_PERIOD
316 #define	CD_DEFAULT_POLL_PERIOD	3
317 #endif
318 #ifndef	CD_DEFAULT_RETRY
319 #define	CD_DEFAULT_RETRY	4
320 #endif
321 #ifndef	CD_DEFAULT_TIMEOUT
322 #define	CD_DEFAULT_TIMEOUT	30000
323 #endif
324 
325 static int cd_poll_period = CD_DEFAULT_POLL_PERIOD;
326 static int cd_retry_count = CD_DEFAULT_RETRY;
327 static int cd_timeout = CD_DEFAULT_TIMEOUT;
328 
329 static SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
330     "CAM CDROM driver");
331 SYSCTL_INT(_kern_cam_cd, OID_AUTO, poll_period, CTLFLAG_RWTUN,
332            &cd_poll_period, 0, "Media polling period in seconds");
333 SYSCTL_INT(_kern_cam_cd, OID_AUTO, retry_count, CTLFLAG_RWTUN,
334            &cd_retry_count, 0, "Normal I/O retry count");
335 SYSCTL_INT(_kern_cam_cd, OID_AUTO, timeout, CTLFLAG_RWTUN,
336 	   &cd_timeout, 0, "Timeout, in us, for read operations");
337 
338 static MALLOC_DEFINE(M_SCSICD, "scsi_cd", "scsi_cd buffers");
339 
340 static void
341 cdinit(void)
342 {
343 	cam_status status;
344 
345 	/*
346 	 * Install a global async callback.  This callback will
347 	 * receive async callbacks like "new device found".
348 	 */
349 	status = xpt_register_async(AC_FOUND_DEVICE, cdasync, NULL, NULL);
350 
351 	if (status != CAM_REQ_CMP) {
352 		printf("cd: Failed to attach master async callback "
353 		       "due to status 0x%x!\n", status);
354 	}
355 }
356 
357 /*
358  * Callback from GEOM, called when it has finished cleaning up its
359  * resources.
360  */
361 static void
362 cddiskgonecb(struct disk *dp)
363 {
364 	struct cam_periph *periph;
365 
366 	periph = (struct cam_periph *)dp->d_drv1;
367 	cam_periph_release(periph);
368 }
369 
370 static void
371 cdoninvalidate(struct cam_periph *periph)
372 {
373 	struct cd_softc *softc;
374 
375 	cam_periph_assert(periph, MA_OWNED);
376 	softc = (struct cd_softc *)periph->softc;
377 
378 	/*
379 	 * De-register any async callbacks.
380 	 */
381 	xpt_register_async(0, cdasync, periph, periph->path);
382 
383 	softc->flags |= CD_FLAG_INVALID;
384 
385 	/*
386 	 * Return all queued I/O with ENXIO.
387 	 * XXX Handle any transactions queued to the card
388 	 *     with XPT_ABORT_CCB.
389 	 */
390 	bioq_flush(&softc->bio_queue, NULL, ENXIO);
391 
392 	disk_gone(softc->disk);
393 }
394 
395 static void
396 cdcleanup(struct cam_periph *periph)
397 {
398 	struct cd_softc *softc;
399 
400 	softc = (struct cd_softc *)periph->softc;
401 
402 	cam_periph_unlock(periph);
403 	if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
404 	    && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
405 		xpt_print(periph->path, "can't remove sysctl context\n");
406 	}
407 
408 	callout_drain(&softc->mediapoll_c);
409 	disk_destroy(softc->disk);
410 	free(softc, M_DEVBUF);
411 	cam_periph_lock(periph);
412 }
413 
414 static void
415 cdasync(void *callback_arg, uint32_t code,
416 	struct cam_path *path, void *arg)
417 {
418 	struct cam_periph *periph;
419 	struct cd_softc *softc;
420 
421 	periph = (struct cam_periph *)callback_arg;
422 	switch (code) {
423 	case AC_FOUND_DEVICE:
424 	{
425 		struct ccb_getdev *cgd;
426 		cam_status status;
427 
428 		cgd = (struct ccb_getdev *)arg;
429 		if (cgd == NULL)
430 			break;
431 
432 		if (cgd->protocol != PROTO_SCSI)
433 			break;
434 		if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED)
435 			break;
436 		if (SID_TYPE(&cgd->inq_data) != T_CDROM
437 		    && SID_TYPE(&cgd->inq_data) != T_WORM)
438 			break;
439 
440 		/*
441 		 * Allocate a peripheral instance for
442 		 * this device and start the probe
443 		 * process.
444 		 */
445 		status = cam_periph_alloc(cdregister, cdoninvalidate,
446 					  cdcleanup, cdstart,
447 					  "cd", CAM_PERIPH_BIO,
448 					  path, cdasync,
449 					  AC_FOUND_DEVICE, cgd);
450 
451 		if (status != CAM_REQ_CMP
452 		 && status != CAM_REQ_INPROG)
453 			printf("cdasync: Unable to attach new device "
454 			       "due to status 0x%x\n", status);
455 
456 		return;
457 	}
458 	case AC_UNIT_ATTENTION:
459 	{
460 		union ccb *ccb;
461 		int error_code, sense_key, asc, ascq;
462 
463 		softc = (struct cd_softc *)periph->softc;
464 		ccb = (union ccb *)arg;
465 
466 		/*
467 		 * Handle all media change UNIT ATTENTIONs except
468 		 * our own, as they will be handled by cderror().
469 		 */
470 		if (xpt_path_periph(ccb->ccb_h.path) != periph &&
471 		    scsi_extract_sense_ccb(ccb,
472 		     &error_code, &sense_key, &asc, &ascq)) {
473 			if (asc == 0x28 && ascq == 0x00)
474 				disk_media_changed(softc->disk, M_NOWAIT);
475 		}
476 		break;
477 	}
478 	case AC_SCSI_AEN:
479 		cam_periph_assert(periph, MA_OWNED);
480 		softc = (struct cd_softc *)periph->softc;
481 		if (softc->state == CD_STATE_NORMAL && !softc->tur) {
482 			if (cam_periph_acquire(periph) == 0) {
483 				softc->tur = 1;
484 				xpt_schedule(periph, CAM_PRIORITY_NORMAL);
485 			}
486 		}
487 		/* FALLTHROUGH */
488 	case AC_SENT_BDR:
489 	case AC_BUS_RESET:
490 	{
491 		struct ccb_hdr *ccbh;
492 
493 		cam_periph_assert(periph, MA_OWNED);
494 		softc = (struct cd_softc *)periph->softc;
495 		/*
496 		 * Don't fail on the expected unit attention
497 		 * that will occur.
498 		 */
499 		softc->flags |= CD_FLAG_RETRY_UA;
500 		LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
501 			ccbh->ccb_state |= CD_CCB_RETRY_UA;
502 		break;
503 	}
504 	default:
505 		break;
506 	}
507 
508 	cam_periph_async(periph, code, path, arg);
509 }
510 
511 static void
512 cdsysctlinit(void *context, int pending)
513 {
514 	struct cam_periph *periph;
515 	struct cd_softc *softc;
516 	char tmpstr[32], tmpstr2[16];
517 
518 	periph = (struct cam_periph *)context;
519 	if (cam_periph_acquire(periph) != 0)
520 		return;
521 
522 	softc = (struct cd_softc *)periph->softc;
523 	snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
524 	snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
525 
526 	sysctl_ctx_init(&softc->sysctl_ctx);
527 	cam_periph_lock(periph);
528 	softc->flags |= CD_FLAG_SCTX_INIT;
529 	cam_periph_unlock(periph);
530 	softc->sysctl_tree = SYSCTL_ADD_NODE_WITH_LABEL(&softc->sysctl_ctx,
531 		SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
532 		tmpstr2, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, tmpstr,
533 		"device_index");
534 
535 	if (softc->sysctl_tree == NULL) {
536 		printf("cdsysctlinit: unable to allocate sysctl tree\n");
537 		cam_periph_release(periph);
538 		return;
539 	}
540 
541 	/*
542 	 * Now register the sysctl handler, so the user can the value on
543 	 * the fly.
544 	 */
545 	SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
546 		OID_AUTO, "minimum_cmd_size",
547 		CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
548 		&softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
549 		"Minimum CDB size");
550 
551 	cam_periph_release(periph);
552 }
553 
554 /*
555  * We have a handler function for this so we can check the values when the
556  * user sets them, instead of every time we look at them.
557  */
558 static int
559 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
560 {
561 	int error, value;
562 
563 	value = *(int *)arg1;
564 
565 	error = sysctl_handle_int(oidp, &value, 0, req);
566 
567 	if ((error != 0)
568 	 || (req->newptr == NULL))
569 		return (error);
570 
571 	/*
572 	 * The only real values we can have here are 6 or 10.  I don't
573 	 * really forsee having 12 be an option at any time in the future.
574 	 * So if the user sets something less than or equal to 6, we'll set
575 	 * it to 6.  If he sets something greater than 6, we'll set it to 10.
576 	 *
577 	 * I suppose we could just return an error here for the wrong values,
578 	 * but I don't think it's necessary to do so, as long as we can
579 	 * determine the user's intent without too much trouble.
580 	 */
581 	if (value < 6)
582 		value = 6;
583 	else if (value > 6)
584 		value = 10;
585 
586 	*(int *)arg1 = value;
587 
588 	return (0);
589 }
590 
591 static cam_status
592 cdregister(struct cam_periph *periph, void *arg)
593 {
594 	struct cd_softc *softc;
595 	struct ccb_pathinq cpi;
596 	struct ccb_getdev *cgd;
597 	char tmpstr[80];
598 	caddr_t match;
599 
600 	cgd = (struct ccb_getdev *)arg;
601 	if (cgd == NULL) {
602 		printf("cdregister: no getdev CCB, can't register device\n");
603 		return(CAM_REQ_CMP_ERR);
604 	}
605 
606 	softc = (struct cd_softc *)malloc(sizeof(*softc),M_DEVBUF,
607 	    M_NOWAIT | M_ZERO);
608 	if (softc == NULL) {
609 		printf("cdregister: Unable to probe new device. "
610 		       "Unable to allocate softc\n");
611 		return(CAM_REQ_CMP_ERR);
612 	}
613 
614 	LIST_INIT(&softc->pending_ccbs);
615 	STAILQ_INIT(&softc->mode_queue);
616 	softc->state = CD_STATE_PROBE;
617 	bioq_init(&softc->bio_queue);
618 	if (SID_IS_REMOVABLE(&cgd->inq_data))
619 		softc->flags |= CD_FLAG_DISC_REMOVABLE;
620 
621 	periph->softc = softc;
622 	softc->periph = periph;
623 
624 	/*
625 	 * See if this device has any quirks.
626 	 */
627 	match = cam_quirkmatch((caddr_t)&cgd->inq_data,
628 			       (caddr_t)cd_quirk_table,
629 			       nitems(cd_quirk_table),
630 			       sizeof(*cd_quirk_table), scsi_inquiry_match);
631 
632 	if (match != NULL)
633 		softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
634 	else
635 		softc->quirks = CD_Q_NONE;
636 
637 	/* Check if the SIM does not want 6 byte commands */
638 	xpt_path_inq(&cpi, periph->path);
639 	if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
640 		softc->quirks |= CD_Q_10_BYTE_ONLY;
641 
642 	TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
643 
644 	/* The default is 6 byte commands, unless quirked otherwise */
645 	if (softc->quirks & CD_Q_10_BYTE_ONLY)
646 		softc->minimum_command_size = 10;
647 	else
648 		softc->minimum_command_size = 6;
649 
650 	/*
651 	 * Take a reference on the periph while cdstart is called to finish the
652 	 * probe.  The reference will be dropped in cddone at the end of probe.
653 	 */
654 	(void)cam_periph_acquire(periph);
655 	cam_periph_unlock(periph);
656 	/*
657 	 * Load the user's default, if any.
658 	 */
659 	snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
660 		 periph->unit_number);
661 	TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
662 
663 	/* 6 and 10 are the only permissible values here. */
664 	if (softc->minimum_command_size < 6)
665 		softc->minimum_command_size = 6;
666 	else if (softc->minimum_command_size > 6)
667 		softc->minimum_command_size = 10;
668 
669 	/*
670 	 * We need to register the statistics structure for this device,
671 	 * but we don't have the blocksize yet for it.  So, we register
672 	 * the structure and indicate that we don't have the blocksize
673 	 * yet.  Unlike other SCSI peripheral drivers, we explicitly set
674 	 * the device type here to be CDROM, rather than just ORing in
675 	 * the device type.  This is because this driver can attach to either
676 	 * CDROM or WORM devices, and we want this peripheral driver to
677 	 * show up in the devstat list as a CD peripheral driver, not a
678 	 * WORM peripheral driver.  WORM drives will also have the WORM
679 	 * driver attached to them.
680 	 */
681 	softc->disk = disk_alloc();
682 	softc->disk->d_devstat = devstat_new_entry("cd",
683 			  periph->unit_number, 0,
684 			  DEVSTAT_BS_UNAVAILABLE,
685 			  DEVSTAT_TYPE_CDROM |
686 			  XPORT_DEVSTAT_TYPE(cpi.transport),
687 			  DEVSTAT_PRIORITY_CD);
688 	softc->disk->d_open = cdopen;
689 	softc->disk->d_close = cdclose;
690 	softc->disk->d_strategy = cdstrategy;
691 	softc->disk->d_gone = cddiskgonecb;
692 	softc->disk->d_ioctl = cdioctl;
693 	softc->disk->d_name = "cd";
694 	cam_strvis(softc->disk->d_descr, cgd->inq_data.vendor,
695 	    sizeof(cgd->inq_data.vendor), sizeof(softc->disk->d_descr));
696 	strlcat(softc->disk->d_descr, " ", sizeof(softc->disk->d_descr));
697 	cam_strvis(&softc->disk->d_descr[strlen(softc->disk->d_descr)],
698 	    cgd->inq_data.product, sizeof(cgd->inq_data.product),
699 	    sizeof(softc->disk->d_descr) - strlen(softc->disk->d_descr));
700 	softc->disk->d_unit = periph->unit_number;
701 	softc->disk->d_drv1 = periph;
702 	if (cpi.maxio == 0)
703 		softc->disk->d_maxsize = DFLTPHYS;	/* traditional default */
704 	else if (cpi.maxio > maxphys)
705 		softc->disk->d_maxsize = maxphys;	/* for safety */
706 	else
707 		softc->disk->d_maxsize = cpi.maxio;
708 	softc->disk->d_flags = 0;
709 	softc->disk->d_hba_vendor = cpi.hba_vendor;
710 	softc->disk->d_hba_device = cpi.hba_device;
711 	softc->disk->d_hba_subvendor = cpi.hba_subvendor;
712 	softc->disk->d_hba_subdevice = cpi.hba_subdevice;
713 	snprintf(softc->disk->d_attachment, sizeof(softc->disk->d_attachment),
714 	    "%s%d", cpi.dev_name, cpi.unit_number);
715 	cam_periph_lock(periph);
716 
717 	/*
718 	 * Add an async callback so that we get
719 	 * notified if this device goes away.
720 	 */
721 	xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE |
722 	    AC_SCSI_AEN | AC_UNIT_ATTENTION, cdasync, periph, periph->path);
723 
724 	/*
725 	 * Schedule a periodic media polling events.
726 	 */
727 	callout_init_mtx(&softc->mediapoll_c, cam_periph_mtx(periph), 0);
728 	if ((softc->flags & CD_FLAG_DISC_REMOVABLE) &&
729 	    (cgd->inq_flags & SID_AEN) == 0 &&
730 	    cd_poll_period != 0) {
731 		callout_reset_sbt(&softc->mediapoll_c, cd_poll_period * SBT_1S,
732 		    0, cdmediapoll, periph, C_PREL(1));
733 	}
734 
735 	/* Released after probe when disk_create() call pass it to GEOM. */
736 	cam_periph_hold_boot(periph);
737 
738 	xpt_schedule(periph, CAM_PRIORITY_DEV);
739 	return(CAM_REQ_CMP);
740 }
741 
742 static int
743 cdopen(struct disk *dp)
744 {
745 	struct cam_periph *periph;
746 	struct cd_softc *softc;
747 	int error;
748 
749 	periph = (struct cam_periph *)dp->d_drv1;
750 	softc = (struct cd_softc *)periph->softc;
751 
752 	if (cam_periph_acquire(periph) != 0)
753 		return(ENXIO);
754 
755 	cam_periph_lock(periph);
756 
757 	if (softc->flags & CD_FLAG_INVALID) {
758 		cam_periph_release_locked(periph);
759 		cam_periph_unlock(periph);
760 		return(ENXIO);
761 	}
762 
763 	if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
764 		cam_periph_release_locked(periph);
765 		cam_periph_unlock(periph);
766 		return (error);
767 	}
768 
769 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
770 	    ("cdopen\n"));
771 
772 	/*
773 	 * Check for media, and set the appropriate flags.  We don't bail
774 	 * if we don't have media, but then we don't allow anything but the
775 	 * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
776 	 */
777 	cdcheckmedia(periph, /*do_wait*/ 1);
778 
779 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
780 	cam_periph_unhold(periph);
781 
782 	cam_periph_unlock(periph);
783 
784 	return (0);
785 }
786 
787 static int
788 cdclose(struct disk *dp)
789 {
790 	struct 	cam_periph *periph;
791 	struct	cd_softc *softc;
792 
793 	periph = (struct cam_periph *)dp->d_drv1;
794 	softc = (struct cd_softc *)periph->softc;
795 
796 	cam_periph_lock(periph);
797 	if (cam_periph_hold(periph, PRIBIO) != 0) {
798 		cam_periph_unlock(periph);
799 		cam_periph_release(periph);
800 		return (0);
801 	}
802 
803 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
804 	    ("cdclose\n"));
805 
806 	if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
807 		cdprevent(periph, PR_ALLOW);
808 
809 	/*
810 	 * Since we're closing this CD, mark the blocksize as unavailable.
811 	 * It will be marked as available when the CD is opened again.
812 	 */
813 	softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
814 
815 	/*
816 	 * We'll check the media and toc again at the next open().
817 	 */
818 	softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
819 
820 	cam_periph_unhold(periph);
821 	cam_periph_release_locked(periph);
822 	cam_periph_unlock(periph);
823 
824 	return (0);
825 }
826 
827 static int
828 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
829 					      uint32_t cam_flags,
830 					      uint32_t sense_flags),
831 	 uint32_t cam_flags, uint32_t sense_flags)
832 {
833 	struct cd_softc *softc;
834 	struct cam_periph *periph;
835 	int error;
836 
837 	periph = xpt_path_periph(ccb->ccb_h.path);
838 	softc = (struct cd_softc *)periph->softc;
839 
840 	error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
841 				  softc->disk->d_devstat);
842 
843 	return(error);
844 }
845 
846 /*
847  * Actually translate the requested transfer into one the physical driver
848  * can understand.  The transfer is described by a buf and will include
849  * only one physical transfer.
850  */
851 static void
852 cdstrategy(struct bio *bp)
853 {
854 	struct cam_periph *periph;
855 	struct cd_softc *softc;
856 
857 	periph = (struct cam_periph *)bp->bio_disk->d_drv1;
858 	cam_periph_lock(periph);
859 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
860 	    ("cdstrategy(%p)\n", bp));
861 
862 	softc = (struct cd_softc *)periph->softc;
863 
864 	/*
865 	 * If the device has been made invalid, error out
866 	 */
867 	if ((softc->flags & CD_FLAG_INVALID)) {
868 		cam_periph_unlock(periph);
869 		biofinish(bp, NULL, ENXIO);
870 		return;
871 	}
872 
873 	/*
874 	 * Place it in the queue of disk activities for this disk
875 	 */
876 	bioq_disksort(&softc->bio_queue, bp);
877 
878         /*
879 	 * If we don't know that we have valid media, schedule the media
880 	 * check first.  The I/O will get executed after the media check.
881 	 */
882 	if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
883 		cdcheckmedia(periph, /*do_wait*/ 0);
884 	else
885 		xpt_schedule(periph, CAM_PRIORITY_NORMAL);
886 
887 	cam_periph_unlock(periph);
888 	return;
889 }
890 
891 static void
892 cdstart(struct cam_periph *periph, union ccb *start_ccb)
893 {
894 	struct cd_softc *softc;
895 	struct bio *bp;
896 	struct ccb_scsiio *csio;
897 
898 	cam_periph_assert(periph, MA_OWNED);
899 	softc = (struct cd_softc *)periph->softc;
900 
901 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
902 
903 	switch (softc->state) {
904 	case CD_STATE_NORMAL:
905 	{
906 		bp = bioq_first(&softc->bio_queue);
907 		if (bp == NULL) {
908 			if (softc->tur) {
909 				softc->tur = 0;
910 				csio = &start_ccb->csio;
911 				scsi_test_unit_ready(csio,
912 				     /*retries*/ cd_retry_count,
913 				     cddone,
914 				     MSG_SIMPLE_Q_TAG,
915 				     SSD_FULL_SIZE,
916 				     cd_timeout);
917 				start_ccb->ccb_h.ccb_bp = NULL;
918 				start_ccb->ccb_h.ccb_state = CD_CCB_TUR;
919 				xpt_action(start_ccb);
920 			} else
921 				xpt_release_ccb(start_ccb);
922 		} else {
923 			if (softc->tur) {
924 				softc->tur = 0;
925 				cam_periph_release_locked(periph);
926 			}
927 			bioq_remove(&softc->bio_queue, bp);
928 
929 			if ((bp->bio_cmd != BIO_READ) &&
930 			    (bp->bio_cmd != BIO_WRITE)) {
931 				biofinish(bp, NULL, EOPNOTSUPP);
932 				xpt_release_ccb(start_ccb);
933 				return;
934 			}
935 
936 			scsi_read_write(&start_ccb->csio,
937 					/*retries*/ cd_retry_count,
938 					/* cbfcnp */ cddone,
939 					MSG_SIMPLE_Q_TAG,
940 					/* read */bp->bio_cmd == BIO_READ ?
941 					SCSI_RW_READ : SCSI_RW_WRITE,
942 					/* byte2 */ 0,
943 					/* minimum_cmd_size */ 10,
944 					/* lba */ bp->bio_offset /
945 					  softc->params.blksize,
946 					bp->bio_bcount / softc->params.blksize,
947 					/* data_ptr */ bp->bio_data,
948 					/* dxfer_len */ bp->bio_bcount,
949 					/* sense_len */ cd_retry_count ?
950 					  SSD_FULL_SIZE : SF_NO_PRINT,
951 					/* timeout */ cd_timeout);
952 			/* Use READ CD command for audio tracks. */
953 			if (softc->params.blksize == 2352) {
954 				start_ccb->csio.cdb_io.cdb_bytes[0] = READ_CD;
955 				start_ccb->csio.cdb_io.cdb_bytes[9] = 0xf8;
956 				start_ccb->csio.cdb_io.cdb_bytes[10] = 0;
957 				start_ccb->csio.cdb_io.cdb_bytes[11] = 0;
958 				start_ccb->csio.cdb_len = 12;
959 			}
960 			start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
961 
962 			LIST_INSERT_HEAD(&softc->pending_ccbs,
963 					 &start_ccb->ccb_h, periph_links.le);
964 			softc->outstanding_cmds++;
965 
966 			/* We expect a unit attention from this device */
967 			if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
968 				start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
969 				softc->flags &= ~CD_FLAG_RETRY_UA;
970 			}
971 
972 			start_ccb->ccb_h.ccb_bp = bp;
973 			bp = bioq_first(&softc->bio_queue);
974 
975 			xpt_action(start_ccb);
976 		}
977 		if (bp != NULL || softc->tur) {
978 			/* Have more work to do, so ensure we stay scheduled */
979 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
980 		}
981 		break;
982 	}
983 	case CD_STATE_PROBE:
984 	case CD_STATE_MEDIA_SIZE:
985 	{
986 		struct scsi_read_capacity_data *rcap;
987 
988 		rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
989 		    M_SCSICD, M_NOWAIT | M_ZERO);
990 		if (rcap == NULL) {
991 			xpt_print(periph->path,
992 			    "%s: Couldn't malloc read_capacity data\n",
993 			    __func__);
994 			xpt_release_ccb(start_ccb);
995 			/*
996 			 * We can't probe because we can't allocate memory,
997 			 * so invalidate the peripheral.  The system probably
998 			 * has larger problems at this stage.  If we've
999 			 * already probed (and are re-probing capacity), we
1000 			 * don't need to invalidate.
1001 			 *
1002 			 * XXX KDM need to reset probe state and kick out
1003 			 * pending I/O.
1004 			 */
1005 			if (softc->state == CD_STATE_PROBE)
1006 				cam_periph_invalidate(periph);
1007 			break;
1008 		}
1009 
1010 		/*
1011 		 * Set the default capacity and sector size to something that
1012 		 * GEOM can handle.  This will get reset when a read capacity
1013 		 * completes successfully.
1014 		 */
1015 		softc->disk->d_sectorsize = 2048;
1016 		softc->disk->d_mediasize = 0;
1017 
1018 		csio = &start_ccb->csio;
1019 		scsi_read_capacity(csio,
1020 				   /*retries*/ cd_retry_count,
1021 				   cddone,
1022 				   MSG_SIMPLE_Q_TAG,
1023 				   rcap,
1024 				   SSD_FULL_SIZE,
1025 				   /*timeout*/20000);
1026 		start_ccb->ccb_h.ccb_bp = NULL;
1027 		if (softc->state == CD_STATE_PROBE)
1028 			start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1029 		else
1030 			start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_SIZE;
1031 		xpt_action(start_ccb);
1032 		break;
1033 	}
1034 	case CD_STATE_MEDIA_ALLOW:
1035 	case CD_STATE_MEDIA_PREVENT:
1036 	{
1037 		/*
1038 		 * If the CD is already locked, we don't need to do this.
1039 		 * Move on to the capacity check.
1040 		 */
1041 		if (softc->state == CD_STATE_MEDIA_PREVENT
1042 		 && (softc->flags & CD_FLAG_DISC_LOCKED) != 0) {
1043 			softc->state = CD_STATE_MEDIA_SIZE;
1044 			xpt_release_ccb(start_ccb);
1045 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1046 			break;
1047 		}
1048 
1049 		scsi_prevent(&start_ccb->csio,
1050 			     /*retries*/ cd_retry_count,
1051 			     /*cbfcnp*/ cddone,
1052 			     /*tag_action*/ MSG_SIMPLE_Q_TAG,
1053 			     /*action*/ (softc->state == CD_STATE_MEDIA_ALLOW) ?
1054 					PR_ALLOW : PR_PREVENT,
1055 			     /*sense_len*/ SSD_FULL_SIZE,
1056 			     /*timeout*/ 60000);
1057 
1058 		start_ccb->ccb_h.ccb_bp = NULL;
1059 		if (softc->state == CD_STATE_MEDIA_ALLOW)
1060 			start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_ALLOW;
1061 		else
1062 			start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_PREVENT;
1063 		xpt_action(start_ccb);
1064 		break;
1065 	}
1066 	case CD_STATE_MEDIA_TOC_HDR: {
1067 		struct ioc_toc_header *toch;
1068 
1069 		bzero(&softc->toc, sizeof(softc->toc));
1070 
1071 		toch = &softc->toc.header;
1072 
1073 		scsi_read_toc(&start_ccb->csio,
1074 			      /*retries*/ cd_retry_count,
1075 			      /*cbfcnp*/ cddone,
1076 			      /*tag_action*/ MSG_SIMPLE_Q_TAG,
1077 			      /*byte1_flags*/ 0,
1078 			      /*format*/ SRTOC_FORMAT_TOC,
1079 			      /*track*/ 0,
1080 			      /*data_ptr*/ (uint8_t *)toch,
1081 			      /*dxfer_len*/ sizeof(*toch),
1082 			      /*sense_len*/ SSD_FULL_SIZE,
1083 			      /*timeout*/ 50000);
1084 		start_ccb->ccb_h.ccb_bp = NULL;
1085 		start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_TOC_HDR;
1086 		xpt_action(start_ccb);
1087 		break;
1088 	}
1089 	case CD_STATE_MEDIA_TOC_FULL: {
1090 		bzero(&softc->toc, sizeof(softc->toc));
1091 
1092 		scsi_read_toc(&start_ccb->csio,
1093 			      /*retries*/ cd_retry_count,
1094 			      /*cbfcnp*/ cddone,
1095 			      /*tag_action*/ MSG_SIMPLE_Q_TAG,
1096 			      /*byte1_flags*/ 0,
1097 			      /*format*/ SRTOC_FORMAT_TOC,
1098 			      /*track*/ 0,
1099 			      /*data_ptr*/ (uint8_t *)&softc->toc,
1100 			      /*dxfer_len*/ softc->toc_read_len ?
1101 					    softc->toc_read_len :
1102 					    sizeof(softc->toc),
1103 			      /*sense_len*/ SSD_FULL_SIZE,
1104 			      /*timeout*/ 50000);
1105 		start_ccb->ccb_h.ccb_bp = NULL;
1106 		start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_TOC_FULL;
1107 		xpt_action(start_ccb);
1108 		break;
1109 	}
1110 	case CD_STATE_MEDIA_TOC_LEAD: {
1111 		struct cd_toc_single *leadout;
1112 
1113 		leadout = &softc->leadout;
1114 		bzero(leadout, sizeof(*leadout));
1115 
1116 		scsi_read_toc(&start_ccb->csio,
1117 			      /*retries*/ cd_retry_count,
1118 			      /*cbfcnp*/ cddone,
1119 			      /*tag_action*/ MSG_SIMPLE_Q_TAG,
1120 			      /*byte1_flags*/ CD_MSF,
1121 			      /*format*/ SRTOC_FORMAT_TOC,
1122 			      /*track*/ LEADOUT,
1123 			      /*data_ptr*/ (uint8_t *)leadout,
1124 			      /*dxfer_len*/ sizeof(*leadout),
1125 			      /*sense_len*/ SSD_FULL_SIZE,
1126 			      /*timeout*/ 50000);
1127 		start_ccb->ccb_h.ccb_bp = NULL;
1128 		start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_TOC_LEAD;
1129 		xpt_action(start_ccb);
1130 		break;
1131 	}
1132 	}
1133 }
1134 
1135 static void
1136 cddone(struct cam_periph *periph, union ccb *done_ccb)
1137 {
1138 	struct cd_softc *softc;
1139 	struct ccb_scsiio *csio;
1140 
1141 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1142 
1143 	cam_periph_assert(periph, MA_OWNED);
1144 	softc = (struct cd_softc *)periph->softc;
1145 	csio = &done_ccb->csio;
1146 
1147 	switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1148 	case CD_CCB_BUFFER_IO:
1149 	{
1150 		struct bio	*bp;
1151 		int		error;
1152 
1153 		bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1154 		error = 0;
1155 
1156 		if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1157 			int sf;
1158 
1159 			if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1160 				sf = SF_RETRY_UA;
1161 			else
1162 				sf = 0;
1163 
1164 			error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1165 			if (error == ERESTART) {
1166 				/*
1167 				 * A retry was scheuled, so
1168 				 * just return.
1169 				 */
1170 				return;
1171 			}
1172 		}
1173 
1174 		if (error != 0) {
1175 			xpt_print(periph->path,
1176 			    "cddone: got error %#x back\n", error);
1177 			bioq_flush(&softc->bio_queue, NULL, EIO);
1178 			bp->bio_resid = bp->bio_bcount;
1179 			bp->bio_error = error;
1180 			bp->bio_flags |= BIO_ERROR;
1181 			if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1182 				cam_release_devq(done_ccb->ccb_h.path,
1183 					 /*relsim_flags*/0,
1184 					 /*reduction*/0,
1185 					 /*timeout*/0,
1186 					 /*getcount_only*/0);
1187 
1188 		} else {
1189 			bp->bio_resid = csio->resid;
1190 			bp->bio_error = 0;
1191 			if (bp->bio_resid != 0) {
1192 				/*
1193 				 * Short transfer ???
1194 				 * XXX: not sure this is correct for partial
1195 				 * transfers at EOM
1196 				 */
1197 				bp->bio_flags |= BIO_ERROR;
1198 			}
1199 		}
1200 
1201 		LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1202 		softc->outstanding_cmds--;
1203 
1204 		biofinish(bp, NULL, 0);
1205 		break;
1206 	}
1207 	case CD_CCB_PROBE:
1208 	{
1209 		struct	   scsi_read_capacity_data *rdcap;
1210 		char	   *announce_buf;
1211 		struct	   cd_params *cdp;
1212 		int error;
1213 
1214 		cdp = &softc->params;
1215 		announce_buf = softc->announce_temp;
1216 		bzero(announce_buf, CD_ANNOUNCETMP_SZ);
1217 
1218 		rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1219 
1220 		cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1221 		cdp->blksize = scsi_4btoul (rdcap->length);
1222 
1223 		/*
1224 		 * Retry any UNIT ATTENTION type errors.  They
1225 		 * are expected at boot.
1226 		 */
1227 		if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP ||
1228 		    (error = cderror(done_ccb, CAM_RETRY_SELTO,
1229 				SF_RETRY_UA | SF_NO_PRINT)) == 0) {
1230 			snprintf(announce_buf, CD_ANNOUNCETMP_SZ,
1231 			    "%juMB (%ju %u byte sectors)",
1232 			    ((uintmax_t)cdp->disksize * cdp->blksize) /
1233 			     (1024 * 1024),
1234 			    (uintmax_t)cdp->disksize, cdp->blksize);
1235 		} else {
1236 			if (error == ERESTART) {
1237 				/*
1238 				 * A retry was scheuled, so
1239 				 * just return.
1240 				 */
1241 				return;
1242 			} else {
1243 				int asc, ascq;
1244 				int sense_key, error_code;
1245 				int have_sense;
1246 				cam_status status;
1247 				struct ccb_getdev cgd;
1248 
1249 				/* Don't wedge this device's queue */
1250 				if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1251 					cam_release_devq(done_ccb->ccb_h.path,
1252 						 /*relsim_flags*/0,
1253 						 /*reduction*/0,
1254 						 /*timeout*/0,
1255 						 /*getcount_only*/0);
1256 
1257 				status = done_ccb->ccb_h.status;
1258 
1259 				bzero(&cgd, sizeof(cgd));
1260 				xpt_setup_ccb(&cgd.ccb_h,
1261 					      done_ccb->ccb_h.path,
1262 					      CAM_PRIORITY_NORMAL);
1263 				cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1264 				xpt_action((union ccb *)&cgd);
1265 
1266 				if (scsi_extract_sense_ccb(done_ccb,
1267 				    &error_code, &sense_key, &asc, &ascq))
1268 					have_sense = TRUE;
1269 				else
1270 					have_sense = FALSE;
1271 
1272 				/*
1273 				 * Attach to anything that claims to be a
1274 				 * CDROM or WORM device, as long as it
1275 				 * doesn't return a "Logical unit not
1276 				 * supported" (0x25) error.
1277 				 */
1278 				if ((have_sense) && (asc != 0x25)
1279 				 && (error_code == SSD_CURRENT_ERROR
1280 				  || error_code == SSD_DESC_CURRENT_ERROR)) {
1281 					const char *sense_key_desc;
1282 					const char *asc_desc;
1283 
1284 					scsi_sense_desc(sense_key, asc, ascq,
1285 							&cgd.inq_data,
1286 							&sense_key_desc,
1287 							&asc_desc);
1288 					snprintf(announce_buf,
1289 					    CD_ANNOUNCETMP_SZ,
1290 						"Attempt to query device "
1291 						"size failed: %s, %s",
1292 						sense_key_desc,
1293 						asc_desc);
1294 				} else if ((have_sense == 0)
1295 				      && ((status & CAM_STATUS_MASK) ==
1296 					   CAM_SCSI_STATUS_ERROR)
1297 				      && (csio->scsi_status ==
1298 					  SCSI_STATUS_BUSY)) {
1299 					snprintf(announce_buf,
1300 					    CD_ANNOUNCETMP_SZ,
1301 					    "Attempt to query device "
1302 					    "size failed: SCSI Status: %s",
1303 					    scsi_status_string(csio));
1304 				} else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1305 					/*
1306 					 * We only print out an error for
1307 					 * CDROM type devices.  For WORM
1308 					 * devices, we don't print out an
1309 					 * error since a few WORM devices
1310 					 * don't support CDROM commands.
1311 					 * If we have sense information, go
1312 					 * ahead and print it out.
1313 					 * Otherwise, just say that we
1314 					 * couldn't attach.
1315 					 */
1316 
1317 					/*
1318 					 * Just print out the error, not
1319 					 * the full probe message, when we
1320 					 * don't attach.
1321 					 */
1322 					if (have_sense)
1323 						scsi_sense_print(
1324 							&done_ccb->csio);
1325 					else {
1326 						xpt_print(periph->path,
1327 						    "got CAM status %#x\n",
1328 						    done_ccb->ccb_h.status);
1329 					}
1330 					xpt_print(periph->path, "fatal error, "
1331 					    "failed to attach to device\n");
1332 					/*
1333 					 * Invalidate this peripheral.
1334 					 */
1335 					cam_periph_invalidate(periph);
1336 
1337 					announce_buf = NULL;
1338 				} else {
1339 					/*
1340 					 * Invalidate this peripheral.
1341 					 */
1342 					cam_periph_invalidate(periph);
1343 					announce_buf = NULL;
1344 				}
1345 			}
1346 		}
1347 		free(rdcap, M_SCSICD);
1348 		if (announce_buf != NULL) {
1349 			struct sbuf sb;
1350 
1351 			sbuf_new(&sb, softc->announce_buf, CD_ANNOUNCE_SZ,
1352 			    SBUF_FIXEDLEN);
1353 			xpt_announce_periph_sbuf(periph, &sb, announce_buf);
1354 			xpt_announce_quirks_sbuf(periph, &sb, softc->quirks,
1355 			    CD_Q_BIT_STRING);
1356 			sbuf_finish(&sb);
1357 			sbuf_putbuf(&sb);
1358 
1359 			/*
1360 			 * Create our sysctl variables, now that we know
1361 			 * we have successfully attached.
1362 			 */
1363 			taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1364 		}
1365 		softc->state = CD_STATE_NORMAL;
1366 		/*
1367 		 * Since our peripheral may be invalidated by an error
1368 		 * above or an external event, we must release our CCB
1369 		 * before releasing the probe lock on the peripheral.
1370 		 * The peripheral will only go away once the last lock
1371 		 * is removed, and we need it around for the CCB release
1372 		 * operation.
1373 		 */
1374 		xpt_release_ccb(done_ccb);
1375 
1376 		/*
1377 		 * We'll release this reference once GEOM calls us back via
1378 		 * cddiskgonecb(), telling us that our provider has been freed.
1379 		 */
1380 		if (cam_periph_acquire(periph) == 0)
1381 			disk_create(softc->disk, DISK_VERSION);
1382 
1383 		cam_periph_release_boot(periph);
1384 		cam_periph_release_locked(periph);
1385 		return;
1386 	}
1387 	case CD_CCB_TUR:
1388 	{
1389 		if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1390 			if (cderror(done_ccb, CAM_RETRY_SELTO,
1391 			    SF_RETRY_UA | SF_NO_RECOVERY | SF_NO_PRINT) ==
1392 			    ERESTART)
1393 				return;
1394 			if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1395 				cam_release_devq(done_ccb->ccb_h.path,
1396 						 /*relsim_flags*/0,
1397 						 /*reduction*/0,
1398 						 /*timeout*/0,
1399 						 /*getcount_only*/0);
1400 		}
1401 		xpt_release_ccb(done_ccb);
1402 		cam_periph_release_locked(periph);
1403 		return;
1404 	}
1405 	case CD_CCB_MEDIA_ALLOW:
1406 	case CD_CCB_MEDIA_PREVENT:
1407 	{
1408 		int error;
1409 		int is_prevent;
1410 
1411 		error = 0;
1412 
1413 		if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1414 			error = cderror(done_ccb, CAM_RETRY_SELTO,
1415 			    SF_RETRY_UA | SF_NO_PRINT);
1416 		}
1417 		if (error == ERESTART)
1418 			return;
1419 		if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1420 			cam_release_devq(done_ccb->ccb_h.path,
1421 					 /*relsim_flags*/0,
1422 					 /*reduction*/0,
1423 					 /*timeout*/0,
1424 					 /*getcount_only*/0);
1425 
1426 		/*
1427 		 * Note that just like the original cdcheckmedia(), we do
1428 		 * a prevent without failing the whole operation if the
1429 		 * prevent fails.  We try, but keep going if it doesn't
1430 		 * work.
1431 		 */
1432 
1433 		if ((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
1434 		     CD_CCB_MEDIA_PREVENT)
1435 			is_prevent = 1;
1436 		else
1437 			is_prevent = 0;
1438 
1439 		xpt_release_ccb(done_ccb);
1440 
1441 		if (is_prevent != 0) {
1442 			if (error == 0)
1443 				softc->flags |= CD_FLAG_DISC_LOCKED;
1444 			else
1445 				softc->flags &= ~CD_FLAG_DISC_LOCKED;
1446 			softc->state = CD_STATE_MEDIA_SIZE;
1447 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1448 		} else {
1449 			if (error == 0)
1450 				softc->flags &= ~CD_FLAG_DISC_LOCKED;
1451 			softc->state = CD_STATE_NORMAL;
1452 			if (bioq_first(&softc->bio_queue) != NULL)
1453 				xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1454 		}
1455 		return;
1456 	}
1457 	case CD_CCB_MEDIA_SIZE:
1458 	{
1459 		struct scsi_read_capacity_data *rdcap;
1460 		int error;
1461 
1462 		error = 0;
1463 		if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1464 			error = cderror(done_ccb, CAM_RETRY_SELTO,
1465 			    SF_RETRY_UA | SF_NO_PRINT);
1466 		}
1467 		if (error == ERESTART)
1468 			return;
1469 		if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1470 			cam_release_devq(done_ccb->ccb_h.path,
1471 					 /*relsim_flags*/0,
1472 					 /*reduction*/0,
1473 					 /*timeout*/0,
1474 					 /*getcount_only*/0);
1475 		rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1476 
1477 		if (error == 0) {
1478 			softc->params.disksize =scsi_4btoul(rdcap->addr) + 1;
1479 			softc->params.blksize  = scsi_4btoul(rdcap->length);
1480 
1481 			/* Make sure we got at least some block size. */
1482 			if (softc->params.blksize == 0)
1483 				error = EIO;
1484 			/*
1485 			 * SCSI-3 mandates that the reported blocksize shall be
1486 			 * 2048.  Older drives sometimes report funny values,
1487 			 * trim it down to 2048, or other parts of the kernel
1488 			 * will get confused.
1489 			 *
1490 			 * XXX we leave drives alone that might report 512
1491 			 * bytes, as well as drives reporting more weird
1492 			 * sizes like perhaps 4K.
1493 			 */
1494 			if (softc->params.blksize > 2048
1495 			 && softc->params.blksize <= 2352)
1496 				softc->params.blksize = 2048;
1497 		}
1498 		free(rdcap, M_SCSICD);
1499 
1500 		if (error == 0) {
1501 			softc->disk->d_sectorsize = softc->params.blksize;
1502 			softc->disk->d_mediasize =
1503 			    (off_t)softc->params.blksize *
1504 			    softc->params.disksize;
1505 			softc->flags |= CD_FLAG_SAW_MEDIA | CD_FLAG_VALID_MEDIA;
1506 			softc->state = CD_STATE_MEDIA_TOC_HDR;
1507 		} else {
1508 			softc->flags &= ~(CD_FLAG_VALID_MEDIA |
1509 					  CD_FLAG_VALID_TOC);
1510 			bioq_flush(&softc->bio_queue, NULL, EINVAL);
1511 			softc->state = CD_STATE_MEDIA_ALLOW;
1512 			cdmediaprobedone(periph);
1513 		}
1514 		xpt_release_ccb(done_ccb);
1515 		xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1516 		return;
1517 	}
1518 	case CD_CCB_MEDIA_TOC_HDR:
1519 	case CD_CCB_MEDIA_TOC_FULL:
1520 	case CD_CCB_MEDIA_TOC_LEAD:
1521 	{
1522 		int error;
1523 		struct ioc_toc_header *toch;
1524 		int num_entries;
1525 		int cdindex;
1526 
1527 		error = 0;
1528 
1529 		if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1530 			error = cderror(done_ccb, CAM_RETRY_SELTO,
1531 			    SF_RETRY_UA | SF_NO_PRINT);
1532 		}
1533 		if (error == ERESTART)
1534 			return;
1535 
1536 		if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1537 			cam_release_devq(done_ccb->ccb_h.path,
1538 					 /*relsim_flags*/0,
1539 					 /*reduction*/0,
1540 					 /*timeout*/0,
1541 					 /*getcount_only*/0);
1542 
1543 		/*
1544 		 * We will get errors here for media that doesn't have a table
1545 		 * of contents.  According to the MMC-3 spec: "When a Read
1546 		 * TOC/PMA/ATIP command is presented for a DDCD/CD-R/RW media,
1547 		 * where the first TOC has not been recorded (no complete
1548 		 * session) and the Format codes 0000b, 0001b, or 0010b are
1549 		 * specified, this command shall be rejected with an INVALID
1550 		 * FIELD IN CDB.  Devices that are not capable of reading an
1551 		 * incomplete session on DDC/CD-R/RW media shall report
1552 		 * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
1553 		 *
1554 		 * So this isn't fatal if we can't read the table of contents,
1555 		 * it just means that the user won't be able to issue the
1556 		 * play tracks ioctl, and likely lots of other stuff won't
1557 		 * work either.  They need to burn the CD before we can do
1558 		 * a whole lot with it.  So we don't print anything here if
1559 		 * we get an error back.
1560 		 *
1561 		 * We also bail out if the drive doesn't at least give us
1562 		 * the full TOC header.
1563 		 */
1564 		if ((error != 0)
1565 		 || ((csio->dxfer_len - csio->resid) <
1566 		      sizeof(struct ioc_toc_header))) {
1567 			softc->flags &= ~CD_FLAG_VALID_TOC;
1568 			bzero(&softc->toc, sizeof(softc->toc));
1569 			/*
1570 			 * Failing the TOC read is not an error.
1571 			 */
1572 			softc->state = CD_STATE_NORMAL;
1573 			xpt_release_ccb(done_ccb);
1574 
1575 			cdmediaprobedone(periph);
1576 
1577 			/*
1578 			 * Go ahead and schedule I/O execution if there is
1579 			 * anything in the queue.  It'll probably get
1580 			 * kicked out with an error.
1581 			 */
1582 			if (bioq_first(&softc->bio_queue) != NULL)
1583 				xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1584 			return;
1585 		}
1586 
1587 		/*
1588 		 * Note that this is NOT the storage location used for the
1589 		 * leadout!
1590 		 */
1591 		toch = &softc->toc.header;
1592 
1593 		if (softc->quirks & CD_Q_BCD_TRACKS) {
1594 			toch->starting_track = bcd2bin(toch->starting_track);
1595 			toch->ending_track = bcd2bin(toch->ending_track);
1596 		}
1597 
1598 		/* Number of TOC entries, plus leadout */
1599 		num_entries = toch->ending_track - toch->starting_track + 2;
1600 		cdindex = toch->starting_track + num_entries - 1;
1601 
1602 		if ((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
1603 		     CD_CCB_MEDIA_TOC_HDR) {
1604 			if (num_entries <= 0 ||
1605 			    num_entries > nitems(softc->toc.entries)) {
1606 				softc->flags &= ~CD_FLAG_VALID_TOC;
1607 				bzero(&softc->toc, sizeof(softc->toc));
1608 				/*
1609 				 * Failing the TOC read is not an error.
1610 				 */
1611 				softc->state = CD_STATE_NORMAL;
1612 				xpt_release_ccb(done_ccb);
1613 
1614 				cdmediaprobedone(periph);
1615 
1616 				/*
1617 				 * Go ahead and schedule I/O execution if
1618 				 * there is anything in the queue.  It'll
1619 				 * probably get kicked out with an error.
1620 				 */
1621 				if (bioq_first(&softc->bio_queue) != NULL)
1622 					xpt_schedule(periph,
1623 					    CAM_PRIORITY_NORMAL);
1624 			} else {
1625 				softc->toc_read_len = num_entries *
1626 				    sizeof(struct cd_toc_entry);
1627 				softc->toc_read_len += sizeof(*toch);
1628 
1629 				softc->state = CD_STATE_MEDIA_TOC_FULL;
1630 				xpt_release_ccb(done_ccb);
1631 				xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1632 			}
1633 
1634 			return;
1635 		} else if ((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
1636 			    CD_CCB_MEDIA_TOC_LEAD) {
1637 			struct cd_toc_single *leadout;
1638 
1639 			leadout = (struct cd_toc_single *)csio->data_ptr;
1640 			softc->toc.entries[cdindex - toch->starting_track] =
1641 			    leadout->entry;
1642 		} else if (((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
1643 			    CD_CCB_MEDIA_TOC_FULL)
1644 			&& (cdindex == toch->ending_track + 1)) {
1645 			/*
1646 			 * XXX KDM is this necessary?  Probably only if the
1647 			 * drive doesn't return leadout information with the
1648 			 * table of contents.
1649 			 */
1650 			softc->state = CD_STATE_MEDIA_TOC_LEAD;
1651 			xpt_release_ccb(done_ccb);
1652 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1653 			return;
1654 		}
1655 
1656 		if (softc->quirks & CD_Q_BCD_TRACKS) {
1657 			for (cdindex = 0; cdindex < num_entries - 1; cdindex++){
1658 				softc->toc.entries[cdindex].track =
1659 				    bcd2bin(softc->toc.entries[cdindex].track);
1660 			}
1661 		}
1662 
1663 		softc->flags |= CD_FLAG_VALID_TOC;
1664 		/* If the first track is audio, correct sector size. */
1665 		if ((softc->toc.entries[0].control & 4) == 0) {
1666 			softc->disk->d_sectorsize =softc->params.blksize = 2352;
1667 			softc->disk->d_mediasize =
1668 			    (off_t)softc->params.blksize *
1669 			    softc->params.disksize;
1670 		}
1671 		softc->state = CD_STATE_NORMAL;
1672 
1673 		/*
1674 		 * We unconditionally (re)set the blocksize each time the
1675 		 * CD device is opened.  This is because the CD can change,
1676 		 * and therefore the blocksize might change.
1677 		 * XXX problems here if some slice or partition is still
1678 		 * open with the old size?
1679 		 */
1680 		if ((softc->disk->d_devstat->flags & DEVSTAT_BS_UNAVAILABLE)!=0)
1681 			softc->disk->d_devstat->flags &=
1682 			    ~DEVSTAT_BS_UNAVAILABLE;
1683 		softc->disk->d_devstat->block_size = softc->params.blksize;
1684 
1685 		xpt_release_ccb(done_ccb);
1686 
1687 		cdmediaprobedone(periph);
1688 
1689 		if (bioq_first(&softc->bio_queue) != NULL)
1690 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1691 		return;
1692 	}
1693 	default:
1694 		break;
1695 	}
1696 	xpt_release_ccb(done_ccb);
1697 }
1698 
1699 static union cd_pages *
1700 cdgetpage(struct cd_mode_params *mode_params)
1701 {
1702 	union cd_pages *page;
1703 
1704 	if (mode_params->cdb_size == 10)
1705 		page = (union cd_pages *)find_mode_page_10(
1706 			(struct scsi_mode_header_10 *)mode_params->mode_buf);
1707 	else
1708 		page = (union cd_pages *)find_mode_page_6(
1709 			(struct scsi_mode_header_6 *)mode_params->mode_buf);
1710 
1711 	return (page);
1712 }
1713 
1714 static int
1715 cdgetpagesize(int page_num)
1716 {
1717 	u_int i;
1718 
1719 	for (i = 0; i < nitems(cd_page_size_table); i++) {
1720 		if (cd_page_size_table[i].page == page_num)
1721 			return (cd_page_size_table[i].page_size);
1722 	}
1723 
1724 	return (-1);
1725 }
1726 
1727 static struct cd_toc_entry *
1728 te_data_get_ptr(void *irtep, u_long cmd)
1729 {
1730 	union {
1731 		struct ioc_read_toc_entry irte;
1732 #ifdef COMPAT_FREEBSD32
1733 		struct ioc_read_toc_entry32 irte32;
1734 #endif
1735 	} *irteup;
1736 
1737 	irteup = irtep;
1738 	switch (IOCPARM_LEN(cmd)) {
1739 	case sizeof(irteup->irte):
1740 		return (irteup->irte.data);
1741 #ifdef COMPAT_FREEBSD32
1742 	case sizeof(irteup->irte32):
1743 		return ((struct cd_toc_entry *)(uintptr_t)irteup->irte32.data);
1744 #endif
1745 	default:
1746 		panic("Unhandled ioctl command %ld", cmd);
1747 	}
1748 }
1749 
1750 static int
1751 cdioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
1752 {
1753 
1754 	struct 	cam_periph *periph;
1755 	struct	cd_softc *softc;
1756 	int	error = 0;
1757 
1758 	periph = (struct cam_periph *)dp->d_drv1;
1759 	cam_periph_lock(periph);
1760 
1761 	softc = (struct cd_softc *)periph->softc;
1762 
1763 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1764 	    ("cdioctl(%#lx)\n", cmd));
1765 
1766 	if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
1767 		cam_periph_unlock(periph);
1768 		cam_periph_release(periph);
1769 		return (error);
1770 	}
1771 
1772 	/*
1773 	 * If we don't have media loaded, check for it.  If still don't
1774 	 * have media loaded, we can only do a load or eject.
1775 	 *
1776 	 * We only care whether media is loaded if this is a cd-specific ioctl
1777 	 * (thus the IOCGROUP check below).  Note that this will break if
1778 	 * anyone adds any ioctls into the switch statement below that don't
1779 	 * have their ioctl group set to 'c'.
1780 	 */
1781 	if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1782 	 && ((cmd != CDIOCCLOSE)
1783 	  && (cmd != CDIOCEJECT))
1784 	 && (IOCGROUP(cmd) == 'c')) {
1785 		error = cdcheckmedia(periph, /*do_wait*/ 1);
1786 		if (error != 0) {
1787 			cam_periph_unhold(periph);
1788 			cam_periph_unlock(periph);
1789 			return (error);
1790 		}
1791 	}
1792 	/*
1793 	 * Drop the lock here so later mallocs can use WAITOK.  The periph
1794 	 * is essentially locked still with the cam_periph_hold call above.
1795 	 */
1796 	cam_periph_unlock(periph);
1797 
1798 	switch (cmd) {
1799 	case CDIOCPLAYTRACKS:
1800 		{
1801 			struct ioc_play_track *args
1802 			    = (struct ioc_play_track *) addr;
1803 			struct cd_mode_params params;
1804 			union cd_pages *page;
1805 
1806 			params.alloc_len = sizeof(union cd_mode_data_6_10);
1807 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
1808 						 M_WAITOK | M_ZERO);
1809 
1810 			cam_periph_lock(periph);
1811 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1812 				  ("trying to do CDIOCPLAYTRACKS\n"));
1813 
1814 			error = cdgetmode(periph, &params, AUDIO_PAGE);
1815 			if (error) {
1816 				free(params.mode_buf, M_SCSICD);
1817 				cam_periph_unlock(periph);
1818 				break;
1819 			}
1820 			page = cdgetpage(&params);
1821 
1822 			page->audio.flags &= ~CD_PA_SOTC;
1823 			page->audio.flags |= CD_PA_IMMED;
1824 			error = cdsetmode(periph, &params);
1825 			free(params.mode_buf, M_SCSICD);
1826 			if (error) {
1827 				cam_periph_unlock(periph);
1828 				break;
1829 			}
1830 
1831 			/*
1832 			 * This was originally implemented with the PLAY
1833 			 * AUDIO TRACK INDEX command, but that command was
1834 			 * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1835 			 * drives support it but ATAPI and ATAPI-derivative
1836 			 * drives don't seem to support it.  So we keep a
1837 			 * cache of the table of contents and translate
1838 			 * track numbers to MSF format.
1839 			 */
1840 			if (softc->flags & CD_FLAG_VALID_TOC) {
1841 				union msf_lba *sentry, *eentry;
1842 				struct ioc_toc_header *th;
1843 				int st, et;
1844 
1845 				th = &softc->toc.header;
1846 				if (args->end_track < th->ending_track + 1)
1847 					args->end_track++;
1848 				if (args->end_track > th->ending_track + 1)
1849 					args->end_track = th->ending_track + 1;
1850 				st = args->start_track - th->starting_track;
1851 				et = args->end_track - th->starting_track;
1852 				if (st < 0 || et < 0 ||
1853 				    st > th->ending_track - th->starting_track ||
1854 				    et > th->ending_track - th->starting_track) {
1855 					error = EINVAL;
1856 					cam_periph_unlock(periph);
1857 					break;
1858 				}
1859 				sentry = &softc->toc.entries[st].addr;
1860 				eentry = &softc->toc.entries[et].addr;
1861 				error = cdplaymsf(periph,
1862 						  sentry->msf.minute,
1863 						  sentry->msf.second,
1864 						  sentry->msf.frame,
1865 						  eentry->msf.minute,
1866 						  eentry->msf.second,
1867 						  eentry->msf.frame);
1868 			} else {
1869 				/*
1870 				 * If we don't have a valid TOC, try the
1871 				 * play track index command.  It is part of
1872 				 * the SCSI-2 spec, but was removed in the
1873 				 * MMC specs.  ATAPI and ATAPI-derived
1874 				 * drives don't support it.
1875 				 */
1876 				if (softc->quirks & CD_Q_BCD_TRACKS) {
1877 					args->start_track =
1878 						bin2bcd(args->start_track);
1879 					args->end_track =
1880 						bin2bcd(args->end_track);
1881 				}
1882 				error = cdplaytracks(periph,
1883 						     args->start_track,
1884 						     args->start_index,
1885 						     args->end_track,
1886 						     args->end_index);
1887 			}
1888 			cam_periph_unlock(periph);
1889 		}
1890 		break;
1891 	case CDIOCPLAYMSF:
1892 		{
1893 			struct ioc_play_msf *args
1894 				= (struct ioc_play_msf *) addr;
1895 			struct cd_mode_params params;
1896 			union cd_pages *page;
1897 
1898 			params.alloc_len = sizeof(union cd_mode_data_6_10);
1899 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
1900 						 M_WAITOK | M_ZERO);
1901 
1902 			cam_periph_lock(periph);
1903 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1904 				  ("trying to do CDIOCPLAYMSF\n"));
1905 
1906 			error = cdgetmode(periph, &params, AUDIO_PAGE);
1907 			if (error) {
1908 				free(params.mode_buf, M_SCSICD);
1909 				cam_periph_unlock(periph);
1910 				break;
1911 			}
1912 			page = cdgetpage(&params);
1913 
1914 			page->audio.flags &= ~CD_PA_SOTC;
1915 			page->audio.flags |= CD_PA_IMMED;
1916 			error = cdsetmode(periph, &params);
1917 			free(params.mode_buf, M_SCSICD);
1918 			if (error) {
1919 				cam_periph_unlock(periph);
1920 				break;
1921 			}
1922 			error = cdplaymsf(periph,
1923 					  args->start_m,
1924 					  args->start_s,
1925 					  args->start_f,
1926 					  args->end_m,
1927 					  args->end_s,
1928 					  args->end_f);
1929 			cam_periph_unlock(periph);
1930 		}
1931 		break;
1932 	case CDIOCPLAYBLOCKS:
1933 		{
1934 			struct ioc_play_blocks *args
1935 				= (struct ioc_play_blocks *) addr;
1936 			struct cd_mode_params params;
1937 			union cd_pages *page;
1938 
1939 			params.alloc_len = sizeof(union cd_mode_data_6_10);
1940 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
1941 						 M_WAITOK | M_ZERO);
1942 
1943 			cam_periph_lock(periph);
1944 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1945 				  ("trying to do CDIOCPLAYBLOCKS\n"));
1946 
1947 			error = cdgetmode(periph, &params, AUDIO_PAGE);
1948 			if (error) {
1949 				free(params.mode_buf, M_SCSICD);
1950 				cam_periph_unlock(periph);
1951 				break;
1952 			}
1953 			page = cdgetpage(&params);
1954 
1955 			page->audio.flags &= ~CD_PA_SOTC;
1956 			page->audio.flags |= CD_PA_IMMED;
1957 			error = cdsetmode(periph, &params);
1958 			free(params.mode_buf, M_SCSICD);
1959 			if (error) {
1960 				cam_periph_unlock(periph);
1961 				break;
1962 			}
1963 			error = cdplay(periph, args->blk, args->len);
1964 			cam_periph_unlock(periph);
1965 		}
1966 		break;
1967 	case CDIOCREADSUBCHANNEL:
1968 		{
1969 			struct ioc_read_subchannel *args
1970 				= (struct ioc_read_subchannel *) addr;
1971 			struct cd_sub_channel_info *data;
1972 			uint32_t len = args->data_len;
1973 
1974 			data = malloc(sizeof(struct cd_sub_channel_info),
1975 				      M_SCSICD, M_WAITOK | M_ZERO);
1976 
1977 			cam_periph_lock(periph);
1978 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1979 				  ("trying to do CDIOCREADSUBCHANNEL\n"));
1980 
1981 			if ((len > sizeof(struct cd_sub_channel_info)) ||
1982 			    (len < sizeof(struct cd_sub_channel_header))) {
1983 				printf(
1984 					"scsi_cd: cdioctl: "
1985 					"cdioreadsubchannel: error, len=%d\n",
1986 					len);
1987 				error = EINVAL;
1988 				free(data, M_SCSICD);
1989 				cam_periph_unlock(periph);
1990 				break;
1991 			}
1992 
1993 			if (softc->quirks & CD_Q_BCD_TRACKS)
1994 				args->track = bin2bcd(args->track);
1995 
1996 			error = cdreadsubchannel(periph, args->address_format,
1997 				args->data_format, args->track, data, len);
1998 
1999 			if (error) {
2000 				free(data, M_SCSICD);
2001 				cam_periph_unlock(periph);
2002 				break;
2003 			}
2004 			if (softc->quirks & CD_Q_BCD_TRACKS)
2005 				data->what.track_info.track_number =
2006 				    bcd2bin(data->what.track_info.track_number);
2007 			len = min(len, ((data->header.data_len[0] << 8) +
2008 				data->header.data_len[1] +
2009 				sizeof(struct cd_sub_channel_header)));
2010 			cam_periph_unlock(periph);
2011 			error = copyout(data, args->data, len);
2012 			free(data, M_SCSICD);
2013 		}
2014 		break;
2015 
2016 	case CDIOREADTOCHEADER:
2017 		{
2018 			struct ioc_toc_header *th;
2019 
2020 			th = malloc(sizeof(struct ioc_toc_header), M_SCSICD,
2021 				    M_WAITOK | M_ZERO);
2022 
2023 			cam_periph_lock(periph);
2024 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2025 				  ("trying to do CDIOREADTOCHEADER\n"));
2026 
2027 			error = cdreadtoc(periph, 0, 0, (uint8_t *)th,
2028 				          sizeof (*th), /*sense_flags*/SF_NO_PRINT);
2029 			if (error) {
2030 				free(th, M_SCSICD);
2031 				cam_periph_unlock(periph);
2032 				break;
2033 			}
2034 			if (softc->quirks & CD_Q_BCD_TRACKS) {
2035 				/* we are going to have to convert the BCD
2036 				 * encoding on the cd to what is expected
2037 				 */
2038 				th->starting_track =
2039 					bcd2bin(th->starting_track);
2040 				th->ending_track = bcd2bin(th->ending_track);
2041 			}
2042 			th->len = ntohs(th->len);
2043 			bcopy(th, addr, sizeof(*th));
2044 			free(th, M_SCSICD);
2045 			cam_periph_unlock(periph);
2046 		}
2047 		break;
2048 	case CDIOREADTOCENTRYS:
2049 #ifdef COMPAT_FREEBSD32
2050 	case CDIOREADTOCENTRYS_32:
2051 #endif
2052 		{
2053 			struct cd_tocdata *data;
2054 			struct cd_toc_single *lead;
2055 			struct ioc_read_toc_entry *te =
2056 				(struct ioc_read_toc_entry *) addr;
2057 			struct ioc_toc_header *th;
2058 			uint32_t len, readlen, idx, num;
2059 			uint32_t starting_track = te->starting_track;
2060 
2061 			data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2062 			lead = malloc(sizeof(*lead), M_SCSICD, M_WAITOK | M_ZERO);
2063 
2064 			cam_periph_lock(periph);
2065 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2066 				  ("trying to do CDIOREADTOCENTRYS\n"));
2067 
2068 			if (te->data_len < sizeof(struct cd_toc_entry)
2069 			 || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2070 			 || (te->address_format != CD_MSF_FORMAT
2071 			  && te->address_format != CD_LBA_FORMAT)) {
2072 				error = EINVAL;
2073 				printf("scsi_cd: error in readtocentries, "
2074 				       "returning EINVAL\n");
2075 				free(data, M_SCSICD);
2076 				free(lead, M_SCSICD);
2077 				cam_periph_unlock(periph);
2078 				break;
2079 			}
2080 
2081 			th = &data->header;
2082 			error = cdreadtoc(periph, 0, 0, (uint8_t *)th,
2083 					  sizeof (*th), /*sense_flags*/0);
2084 			if (error) {
2085 				free(data, M_SCSICD);
2086 				free(lead, M_SCSICD);
2087 				cam_periph_unlock(periph);
2088 				break;
2089 			}
2090 
2091 			if (softc->quirks & CD_Q_BCD_TRACKS) {
2092 				/* we are going to have to convert the BCD
2093 				 * encoding on the cd to what is expected
2094 				 */
2095 				th->starting_track =
2096 				    bcd2bin(th->starting_track);
2097 				th->ending_track = bcd2bin(th->ending_track);
2098 			}
2099 
2100 			if (starting_track == 0)
2101 				starting_track = th->starting_track;
2102 			else if (starting_track == LEADOUT)
2103 				starting_track = th->ending_track + 1;
2104 			else if (starting_track < th->starting_track ||
2105 				 starting_track > th->ending_track + 1) {
2106 				printf("scsi_cd: error in readtocentries, "
2107 				       "returning EINVAL\n");
2108 				free(data, M_SCSICD);
2109 				free(lead, M_SCSICD);
2110 				cam_periph_unlock(periph);
2111 				error = EINVAL;
2112 				break;
2113 			}
2114 
2115 			/* calculate reading length without leadout entry */
2116 			readlen = (th->ending_track - starting_track + 1) *
2117 				  sizeof(struct cd_toc_entry);
2118 
2119 			/* and with leadout entry */
2120 			len = readlen + sizeof(struct cd_toc_entry);
2121 			if (te->data_len < len) {
2122 				len = te->data_len;
2123 				if (readlen > len)
2124 					readlen = len;
2125 			}
2126 			if (len > sizeof(data->entries)) {
2127 				printf("scsi_cd: error in readtocentries, "
2128 				       "returning EINVAL\n");
2129 				error = EINVAL;
2130 				free(data, M_SCSICD);
2131 				free(lead, M_SCSICD);
2132 				cam_periph_unlock(periph);
2133 				break;
2134 			}
2135 			num = len / sizeof(struct cd_toc_entry);
2136 
2137 			if (readlen > 0) {
2138 				error = cdreadtoc(periph, te->address_format,
2139 						  starting_track,
2140 						  (uint8_t *)data,
2141 						  readlen + sizeof (*th),
2142 						  /*sense_flags*/0);
2143 				if (error) {
2144 					free(data, M_SCSICD);
2145 					free(lead, M_SCSICD);
2146 					cam_periph_unlock(periph);
2147 					break;
2148 				}
2149 			}
2150 
2151 			/* make leadout entry if needed */
2152 			idx = starting_track + num - 1;
2153 			if (softc->quirks & CD_Q_BCD_TRACKS)
2154 				th->ending_track = bcd2bin(th->ending_track);
2155 			if (idx == th->ending_track + 1) {
2156 				error = cdreadtoc(periph, te->address_format,
2157 						  LEADOUT, (uint8_t *)lead,
2158 						  sizeof(*lead),
2159 						  /*sense_flags*/0);
2160 				if (error) {
2161 					free(data, M_SCSICD);
2162 					free(lead, M_SCSICD);
2163 					cam_periph_unlock(periph);
2164 					break;
2165 				}
2166 				data->entries[idx - starting_track] =
2167 					lead->entry;
2168 			}
2169 			if (softc->quirks & CD_Q_BCD_TRACKS) {
2170 				for (idx = 0; idx < num - 1; idx++) {
2171 					data->entries[idx].track =
2172 					    bcd2bin(data->entries[idx].track);
2173 				}
2174 			}
2175 
2176 			cam_periph_unlock(periph);
2177 			error = copyout(data->entries, te_data_get_ptr(te, cmd),
2178 			    len);
2179 			free(data, M_SCSICD);
2180 			free(lead, M_SCSICD);
2181 		}
2182 		break;
2183 	case CDIOREADTOCENTRY:
2184 		{
2185 			struct cd_toc_single *data;
2186 			struct ioc_read_toc_single_entry *te =
2187 				(struct ioc_read_toc_single_entry *) addr;
2188 			struct ioc_toc_header *th;
2189 			uint32_t track;
2190 
2191 			data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2192 
2193 			cam_periph_lock(periph);
2194 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2195 				  ("trying to do CDIOREADTOCENTRY\n"));
2196 
2197 			if (te->address_format != CD_MSF_FORMAT
2198 			    && te->address_format != CD_LBA_FORMAT) {
2199 				printf("error in readtocentry, "
2200 				       " returning EINVAL\n");
2201 				free(data, M_SCSICD);
2202 				error = EINVAL;
2203 				cam_periph_unlock(periph);
2204 				break;
2205 			}
2206 
2207 			th = &data->header;
2208 			error = cdreadtoc(periph, 0, 0, (uint8_t *)th,
2209 					  sizeof (*th), /*sense_flags*/0);
2210 			if (error) {
2211 				free(data, M_SCSICD);
2212 				cam_periph_unlock(periph);
2213 				break;
2214 			}
2215 
2216 			if (softc->quirks & CD_Q_BCD_TRACKS) {
2217 				/* we are going to have to convert the BCD
2218 				 * encoding on the cd to what is expected
2219 				 */
2220 				th->starting_track =
2221 				    bcd2bin(th->starting_track);
2222 				th->ending_track = bcd2bin(th->ending_track);
2223 			}
2224 			track = te->track;
2225 			if (track == 0)
2226 				track = th->starting_track;
2227 			else if (track == LEADOUT)
2228 				/* OK */;
2229 			else if (track < th->starting_track ||
2230 				 track > th->ending_track + 1) {
2231 				printf("error in readtocentry, "
2232 				       " returning EINVAL\n");
2233 				free(data, M_SCSICD);
2234 				error = EINVAL;
2235 				cam_periph_unlock(periph);
2236 				break;
2237 			}
2238 
2239 			error = cdreadtoc(periph, te->address_format, track,
2240 					  (uint8_t *)data, sizeof(*data),
2241 					  /*sense_flags*/0);
2242 			if (error) {
2243 				free(data, M_SCSICD);
2244 				cam_periph_unlock(periph);
2245 				break;
2246 			}
2247 
2248 			if (softc->quirks & CD_Q_BCD_TRACKS)
2249 				data->entry.track = bcd2bin(data->entry.track);
2250 			bcopy(&data->entry, &te->entry,
2251 			      sizeof(struct cd_toc_entry));
2252 			free(data, M_SCSICD);
2253 			cam_periph_unlock(periph);
2254 		}
2255 		break;
2256 	case CDIOCSETPATCH:
2257 		{
2258 			struct ioc_patch *arg = (struct ioc_patch *)addr;
2259 			struct cd_mode_params params;
2260 			union cd_pages *page;
2261 
2262 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2263 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2264 						 M_WAITOK | M_ZERO);
2265 
2266 			cam_periph_lock(periph);
2267 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2268 				  ("trying to do CDIOCSETPATCH\n"));
2269 
2270 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2271 			if (error) {
2272 				free(params.mode_buf, M_SCSICD);
2273 				cam_periph_unlock(periph);
2274 				break;
2275 			}
2276 			page = cdgetpage(&params);
2277 
2278 			page->audio.port[LEFT_PORT].channels =
2279 				arg->patch[0];
2280 			page->audio.port[RIGHT_PORT].channels =
2281 				arg->patch[1];
2282 			page->audio.port[2].channels = arg->patch[2];
2283 			page->audio.port[3].channels = arg->patch[3];
2284 			error = cdsetmode(periph, &params);
2285 			free(params.mode_buf, M_SCSICD);
2286 			cam_periph_unlock(periph);
2287 		}
2288 		break;
2289 	case CDIOCGETVOL:
2290 		{
2291 			struct ioc_vol *arg = (struct ioc_vol *) addr;
2292 			struct cd_mode_params params;
2293 			union cd_pages *page;
2294 
2295 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2296 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2297 						 M_WAITOK | M_ZERO);
2298 
2299 			cam_periph_lock(periph);
2300 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2301 				  ("trying to do CDIOCGETVOL\n"));
2302 
2303 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2304 			if (error) {
2305 				free(params.mode_buf, M_SCSICD);
2306 				cam_periph_unlock(periph);
2307 				break;
2308 			}
2309 			page = cdgetpage(&params);
2310 
2311 			arg->vol[LEFT_PORT] =
2312 				page->audio.port[LEFT_PORT].volume;
2313 			arg->vol[RIGHT_PORT] =
2314 				page->audio.port[RIGHT_PORT].volume;
2315 			arg->vol[2] = page->audio.port[2].volume;
2316 			arg->vol[3] = page->audio.port[3].volume;
2317 			free(params.mode_buf, M_SCSICD);
2318 			cam_periph_unlock(periph);
2319 		}
2320 		break;
2321 	case CDIOCSETVOL:
2322 		{
2323 			struct ioc_vol *arg = (struct ioc_vol *) addr;
2324 			struct cd_mode_params params;
2325 			union cd_pages *page;
2326 
2327 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2328 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2329 						 M_WAITOK | M_ZERO);
2330 
2331 			cam_periph_lock(periph);
2332 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2333 				  ("trying to do CDIOCSETVOL\n"));
2334 
2335 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2336 			if (error) {
2337 				free(params.mode_buf, M_SCSICD);
2338 				cam_periph_unlock(periph);
2339 				break;
2340 			}
2341 			page = cdgetpage(&params);
2342 
2343 			page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2344 			page->audio.port[LEFT_PORT].volume =
2345 				arg->vol[LEFT_PORT];
2346 			page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2347 			page->audio.port[RIGHT_PORT].volume =
2348 				arg->vol[RIGHT_PORT];
2349 			page->audio.port[2].volume = arg->vol[2];
2350 			page->audio.port[3].volume = arg->vol[3];
2351 			error = cdsetmode(periph, &params);
2352 			cam_periph_unlock(periph);
2353 			free(params.mode_buf, M_SCSICD);
2354 		}
2355 		break;
2356 	case CDIOCSETMONO:
2357 		{
2358 			struct cd_mode_params params;
2359 			union cd_pages *page;
2360 
2361 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2362 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2363 						 M_WAITOK | M_ZERO);
2364 
2365 			cam_periph_lock(periph);
2366 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2367 				  ("trying to do CDIOCSETMONO\n"));
2368 
2369 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2370 			if (error) {
2371 				free(params.mode_buf, M_SCSICD);
2372 				cam_periph_unlock(periph);
2373 				break;
2374 			}
2375 			page = cdgetpage(&params);
2376 
2377 			page->audio.port[LEFT_PORT].channels =
2378 				LEFT_CHANNEL | RIGHT_CHANNEL;
2379 			page->audio.port[RIGHT_PORT].channels =
2380 				LEFT_CHANNEL | RIGHT_CHANNEL;
2381 			page->audio.port[2].channels = 0;
2382 			page->audio.port[3].channels = 0;
2383 			error = cdsetmode(periph, &params);
2384 			cam_periph_unlock(periph);
2385 			free(params.mode_buf, M_SCSICD);
2386 		}
2387 		break;
2388 	case CDIOCSETSTEREO:
2389 		{
2390 			struct cd_mode_params params;
2391 			union cd_pages *page;
2392 
2393 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2394 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2395 						 M_WAITOK | M_ZERO);
2396 
2397 			cam_periph_lock(periph);
2398 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2399 				  ("trying to do CDIOCSETSTEREO\n"));
2400 
2401 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2402 			if (error) {
2403 				free(params.mode_buf, M_SCSICD);
2404 				cam_periph_unlock(periph);
2405 				break;
2406 			}
2407 			page = cdgetpage(&params);
2408 
2409 			page->audio.port[LEFT_PORT].channels =
2410 				LEFT_CHANNEL;
2411 			page->audio.port[RIGHT_PORT].channels =
2412 				RIGHT_CHANNEL;
2413 			page->audio.port[2].channels = 0;
2414 			page->audio.port[3].channels = 0;
2415 			error = cdsetmode(periph, &params);
2416 			free(params.mode_buf, M_SCSICD);
2417 			cam_periph_unlock(periph);
2418 		}
2419 		break;
2420 	case CDIOCSETMUTE:
2421 		{
2422 			struct cd_mode_params params;
2423 			union cd_pages *page;
2424 
2425 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2426 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2427 						 M_WAITOK | M_ZERO);
2428 
2429 			cam_periph_lock(periph);
2430 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2431 				  ("trying to do CDIOCSETMUTE\n"));
2432 
2433 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2434 			if (error) {
2435 				free(params.mode_buf, M_SCSICD);
2436 				cam_periph_unlock(periph);
2437 				break;
2438 			}
2439 			page = cdgetpage(&params);
2440 
2441 			page->audio.port[LEFT_PORT].channels = 0;
2442 			page->audio.port[RIGHT_PORT].channels = 0;
2443 			page->audio.port[2].channels = 0;
2444 			page->audio.port[3].channels = 0;
2445 			error = cdsetmode(periph, &params);
2446 			free(params.mode_buf, M_SCSICD);
2447 			cam_periph_unlock(periph);
2448 		}
2449 		break;
2450 	case CDIOCSETLEFT:
2451 		{
2452 			struct cd_mode_params params;
2453 			union cd_pages *page;
2454 
2455 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2456 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2457 						 M_WAITOK | M_ZERO);
2458 
2459 			cam_periph_lock(periph);
2460 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2461 				  ("trying to do CDIOCSETLEFT\n"));
2462 
2463 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2464 			if (error) {
2465 				free(params.mode_buf, M_SCSICD);
2466 				cam_periph_unlock(periph);
2467 				break;
2468 			}
2469 			page = cdgetpage(&params);
2470 
2471 			page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2472 			page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2473 			page->audio.port[2].channels = 0;
2474 			page->audio.port[3].channels = 0;
2475 			error = cdsetmode(periph, &params);
2476 			free(params.mode_buf, M_SCSICD);
2477 			cam_periph_unlock(periph);
2478 		}
2479 		break;
2480 	case CDIOCSETRIGHT:
2481 		{
2482 			struct cd_mode_params params;
2483 			union cd_pages *page;
2484 
2485 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2486 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2487 						 M_WAITOK | M_ZERO);
2488 
2489 			cam_periph_lock(periph);
2490 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2491 				  ("trying to do CDIOCSETRIGHT\n"));
2492 
2493 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2494 			if (error) {
2495 				free(params.mode_buf, M_SCSICD);
2496 				cam_periph_unlock(periph);
2497 				break;
2498 			}
2499 			page = cdgetpage(&params);
2500 
2501 			page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2502 			page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2503 			page->audio.port[2].channels = 0;
2504 			page->audio.port[3].channels = 0;
2505 			error = cdsetmode(periph, &params);
2506 			free(params.mode_buf, M_SCSICD);
2507 			cam_periph_unlock(periph);
2508 		}
2509 		break;
2510 	case CDIOCRESUME:
2511 		cam_periph_lock(periph);
2512 		error = cdpause(periph, 1);
2513 		cam_periph_unlock(periph);
2514 		break;
2515 	case CDIOCPAUSE:
2516 		cam_periph_lock(periph);
2517 		error = cdpause(periph, 0);
2518 		cam_periph_unlock(periph);
2519 		break;
2520 	case CDIOCSTART:
2521 		cam_periph_lock(periph);
2522 		error = cdstartunit(periph, 0);
2523 		cam_periph_unlock(periph);
2524 		break;
2525 	case CDIOCCLOSE:
2526 		cam_periph_lock(periph);
2527 		error = cdstartunit(periph, 1);
2528 		cam_periph_unlock(periph);
2529 		break;
2530 	case CDIOCSTOP:
2531 		cam_periph_lock(periph);
2532 		error = cdstopunit(periph, 0);
2533 		cam_periph_unlock(periph);
2534 		break;
2535 	case CDIOCEJECT:
2536 		cam_periph_lock(periph);
2537 		error = cdstopunit(periph, 1);
2538 		cam_periph_unlock(periph);
2539 		break;
2540 	case CDIOCALLOW:
2541 		cam_periph_lock(periph);
2542 		cdprevent(periph, PR_ALLOW);
2543 		cam_periph_unlock(periph);
2544 		break;
2545 	case CDIOCPREVENT:
2546 		cam_periph_lock(periph);
2547 		cdprevent(periph, PR_PREVENT);
2548 		cam_periph_unlock(periph);
2549 		break;
2550 	case CDIOCSETDEBUG:
2551 		/* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2552 		error = ENOTTY;
2553 		break;
2554 	case CDIOCCLRDEBUG:
2555 		/* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2556 		error = ENOTTY;
2557 		break;
2558 	case CDIOCRESET:
2559 		/* return (cd_reset(periph)); */
2560 		error = ENOTTY;
2561 		break;
2562 	case CDRIOCREADSPEED:
2563 		cam_periph_lock(periph);
2564 		error = cdsetspeed(periph, *(uint32_t *)addr, CDR_MAX_SPEED);
2565 		cam_periph_unlock(periph);
2566 		break;
2567 	case CDRIOCWRITESPEED:
2568 		cam_periph_lock(periph);
2569 		error = cdsetspeed(periph, CDR_MAX_SPEED, *(uint32_t *)addr);
2570 		cam_periph_unlock(periph);
2571 		break;
2572 	case CDRIOCGETBLOCKSIZE:
2573 		*(int *)addr = softc->params.blksize;
2574 		break;
2575 	case CDRIOCSETBLOCKSIZE:
2576 		if (*(int *)addr <= 0) {
2577 			error = EINVAL;
2578 			break;
2579 		}
2580 		softc->disk->d_sectorsize = softc->params.blksize = *(int *)addr;
2581 		break;
2582 	case DVDIOCSENDKEY:
2583 	case DVDIOCREPORTKEY: {
2584 		struct dvd_authinfo *authinfo;
2585 
2586 		authinfo = (struct dvd_authinfo *)addr;
2587 
2588 		if (cmd == DVDIOCREPORTKEY)
2589 			error = cdreportkey(periph, authinfo);
2590 		else
2591 			error = cdsendkey(periph, authinfo);
2592 		break;
2593 		}
2594 	case DVDIOCREADSTRUCTURE: {
2595 		struct dvd_struct *dvdstruct;
2596 
2597 		dvdstruct = (struct dvd_struct *)addr;
2598 
2599 		error = cdreaddvdstructure(periph, dvdstruct);
2600 
2601 		break;
2602 	}
2603 	default:
2604 		cam_periph_lock(periph);
2605 		error = cam_periph_ioctl(periph, cmd, addr, cderror);
2606 		cam_periph_unlock(periph);
2607 		break;
2608 	}
2609 
2610 	cam_periph_lock(periph);
2611 	cam_periph_unhold(periph);
2612 
2613 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2614 	if (error && bootverbose) {
2615 		printf("scsi_cd.c::ioctl cmd=%08lx error=%d\n", cmd, error);
2616 	}
2617 	cam_periph_unlock(periph);
2618 
2619 	return (error);
2620 }
2621 
2622 static void
2623 cdprevent(struct cam_periph *periph, int action)
2624 {
2625 	union	ccb *ccb;
2626 	struct	cd_softc *softc;
2627 	int	error;
2628 
2629 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2630 
2631 	cam_periph_assert(periph, MA_OWNED);
2632 	softc = (struct cd_softc *)periph->softc;
2633 
2634 	if (((action == PR_ALLOW)
2635 	  && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2636 	 || ((action == PR_PREVENT)
2637 	  && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2638 		return;
2639 	}
2640 
2641 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
2642 
2643 	scsi_prevent(&ccb->csio,
2644 		     /*retries*/ cd_retry_count,
2645 		     /*cbfcnp*/NULL,
2646 		     MSG_SIMPLE_Q_TAG,
2647 		     action,
2648 		     SSD_FULL_SIZE,
2649 		     /* timeout */60000);
2650 
2651 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2652 			/*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2653 
2654 	xpt_release_ccb(ccb);
2655 
2656 	if (error == 0) {
2657 		if (action == PR_ALLOW)
2658 			softc->flags &= ~CD_FLAG_DISC_LOCKED;
2659 		else
2660 			softc->flags |= CD_FLAG_DISC_LOCKED;
2661 	}
2662 }
2663 
2664 static void
2665 cdmediaprobedone(struct cam_periph *periph)
2666 {
2667 	struct cd_softc *softc;
2668 
2669 	cam_periph_assert(periph, MA_OWNED);
2670 	softc = (struct cd_softc *)periph->softc;
2671 
2672 	softc->flags &= ~CD_FLAG_MEDIA_SCAN_ACT;
2673 
2674 	if ((softc->flags & CD_FLAG_MEDIA_WAIT) != 0) {
2675 		softc->flags &= ~CD_FLAG_MEDIA_WAIT;
2676 		wakeup(&softc->toc);
2677 	}
2678 }
2679 
2680 /*
2681  * XXX: the disk media and sector size is only really able to change
2682  * XXX: while the device is closed.
2683  */
2684 
2685 static int
2686 cdcheckmedia(struct cam_periph *periph, int do_wait)
2687 {
2688 	struct cd_softc *softc;
2689 	int error;
2690 
2691 	cam_periph_assert(periph, MA_OWNED);
2692 	softc = (struct cd_softc *)periph->softc;
2693 	error = 0;
2694 
2695 	if ((do_wait != 0)
2696 	 && ((softc->flags & CD_FLAG_MEDIA_WAIT) == 0)) {
2697 		softc->flags |= CD_FLAG_MEDIA_WAIT;
2698 	}
2699 	if ((softc->flags & CD_FLAG_MEDIA_SCAN_ACT) == 0) {
2700 		softc->state = CD_STATE_MEDIA_PREVENT;
2701 		softc->flags |= CD_FLAG_MEDIA_SCAN_ACT;
2702 		xpt_schedule(periph, CAM_PRIORITY_NORMAL);
2703 	}
2704 
2705 	if (do_wait == 0)
2706 		goto bailout;
2707 
2708 	error = msleep(&softc->toc, cam_periph_mtx(periph), PRIBIO,"cdmedia",0);
2709 
2710 	if (error != 0)
2711 		goto bailout;
2712 
2713 	/*
2714 	 * Check to see whether we have a valid size from the media.  We
2715 	 * may or may not have a valid TOC.
2716 	 */
2717 	if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
2718 		error = EINVAL;
2719 bailout:
2720 
2721 	return (error);
2722 }
2723 
2724 #if 0
2725 static int
2726 cdcheckmedia(struct cam_periph *periph)
2727 {
2728 	struct cd_softc *softc;
2729 	struct ioc_toc_header *toch;
2730 	struct cd_toc_single leadout;
2731 	uint32_t size, toclen;
2732 	int error, num_entries, cdindex;
2733 
2734 	softc = (struct cd_softc *)periph->softc;
2735 
2736 	cdprevent(periph, PR_PREVENT);
2737 	softc->disk->d_sectorsize = 2048;
2738 	softc->disk->d_mediasize = 0;
2739 
2740 	/*
2741 	 * Get the disc size and block size.  If we can't get it, we don't
2742 	 * have media, most likely.
2743 	 */
2744 	if ((error = cdsize(periph, &size)) != 0) {
2745 		softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2746 		cdprevent(periph, PR_ALLOW);
2747 		return (error);
2748 	} else {
2749 		softc->flags |= CD_FLAG_SAW_MEDIA | CD_FLAG_VALID_MEDIA;
2750 		softc->disk->d_sectorsize = softc->params.blksize;
2751 		softc->disk->d_mediasize =
2752 		    (off_t)softc->params.blksize * softc->params.disksize;
2753 	}
2754 
2755 	/*
2756 	 * Now we check the table of contents.  This (currently) is only
2757 	 * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2758 	 * things like present a separate entry in /dev for each track,
2759 	 * like that acd(4) driver does.
2760 	 */
2761 	bzero(&softc->toc, sizeof(softc->toc));
2762 	toch = &softc->toc.header;
2763 	/*
2764 	 * We will get errors here for media that doesn't have a table of
2765 	 * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2766 	 * command is presented for a DDCD/CD-R/RW media, where the first TOC
2767 	 * has not been recorded (no complete session) and the Format codes
2768 	 * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2769 	 * with an INVALID FIELD IN CDB.  Devices that are not capable of
2770 	 * reading an incomplete session on DDC/CD-R/RW media shall report
2771 	 * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2772 	 *
2773 	 * So this isn't fatal if we can't read the table of contents, it
2774 	 * just means that the user won't be able to issue the play tracks
2775 	 * ioctl, and likely lots of other stuff won't work either.  They
2776 	 * need to burn the CD before we can do a whole lot with it.  So
2777 	 * we don't print anything here if we get an error back.
2778 	 */
2779 	error = cdreadtoc(periph, 0, 0, (uint8_t *)toch, sizeof(*toch),
2780 			  SF_NO_PRINT);
2781 	/*
2782 	 * Errors in reading the table of contents aren't fatal, we just
2783 	 * won't have a valid table of contents cached.
2784 	 */
2785 	if (error != 0) {
2786 		error = 0;
2787 		bzero(&softc->toc, sizeof(softc->toc));
2788 		goto bailout;
2789 	}
2790 
2791 	if (softc->quirks & CD_Q_BCD_TRACKS) {
2792 		toch->starting_track = bcd2bin(toch->starting_track);
2793 		toch->ending_track = bcd2bin(toch->ending_track);
2794 	}
2795 
2796 	/* Number of TOC entries, plus leadout */
2797 	num_entries = (toch->ending_track - toch->starting_track) + 2;
2798 
2799 	if (num_entries <= 0)
2800 		goto bailout;
2801 
2802 	toclen = num_entries * sizeof(struct cd_toc_entry);
2803 
2804 	error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2805 			  (uint8_t *)&softc->toc, toclen + sizeof(*toch),
2806 			  SF_NO_PRINT);
2807 	if (error != 0) {
2808 		error = 0;
2809 		bzero(&softc->toc, sizeof(softc->toc));
2810 		goto bailout;
2811 	}
2812 
2813 	if (softc->quirks & CD_Q_BCD_TRACKS) {
2814 		toch->starting_track = bcd2bin(toch->starting_track);
2815 		toch->ending_track = bcd2bin(toch->ending_track);
2816 	}
2817 	/*
2818 	 * XXX KDM is this necessary?  Probably only if the drive doesn't
2819 	 * return leadout information with the table of contents.
2820 	 */
2821 	cdindex = toch->starting_track + num_entries -1;
2822 	if (cdindex == toch->ending_track + 1) {
2823 		error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2824 				  (uint8_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 
2842 	/* If the first track is audio, correct sector size. */
2843 	if ((softc->toc.entries[0].control & 4) == 0) {
2844 		softc->disk->d_sectorsize = softc->params.blksize = 2352;
2845 		softc->disk->d_mediasize =
2846 		    (off_t)softc->params.blksize * softc->params.disksize;
2847 	}
2848 
2849 bailout:
2850 
2851 	/*
2852 	 * We unconditionally (re)set the blocksize each time the
2853 	 * CD device is opened.  This is because the CD can change,
2854 	 * and therefore the blocksize might change.
2855 	 * XXX problems here if some slice or partition is still
2856 	 * open with the old size?
2857 	 */
2858 	if ((softc->disk->d_devstat->flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2859 		softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
2860 	softc->disk->d_devstat->block_size = softc->params.blksize;
2861 
2862 	return (error);
2863 }
2864 
2865 static int
2866 cdsize(struct cam_periph *periph, uint32_t *size)
2867 {
2868 	struct cd_softc *softc;
2869 	union ccb *ccb;
2870 	struct scsi_read_capacity_data *rcap_buf;
2871 	int error;
2872 
2873 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
2874 
2875 	softc = (struct cd_softc *)periph->softc;
2876 
2877 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
2878 
2879 	/* XXX Should be M_WAITOK */
2880 	rcap_buf = malloc(sizeof(struct scsi_read_capacity_data),
2881 			  M_SCSICD, M_NOWAIT | M_ZERO);
2882 	if (rcap_buf == NULL)
2883 		return (ENOMEM);
2884 
2885 	scsi_read_capacity(&ccb->csio,
2886 			   /*retries*/ cd_retry_count,
2887 			   /*cbfcnp*/NULL,
2888 			   MSG_SIMPLE_Q_TAG,
2889 			   rcap_buf,
2890 			   SSD_FULL_SIZE,
2891 			   /* timeout */20000);
2892 
2893 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2894 			 /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2895 
2896 	xpt_release_ccb(ccb);
2897 
2898 	softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
2899 	softc->params.blksize  = scsi_4btoul(rcap_buf->length);
2900 	/* Make sure we got at least some block size. */
2901 	if (error == 0 && softc->params.blksize == 0)
2902 		error = EIO;
2903 	/*
2904 	 * SCSI-3 mandates that the reported blocksize shall be 2048.
2905 	 * Older drives sometimes report funny values, trim it down to
2906 	 * 2048, or other parts of the kernel will get confused.
2907 	 *
2908 	 * XXX we leave drives alone that might report 512 bytes, as
2909 	 * well as drives reporting more weird sizes like perhaps 4K.
2910 	 */
2911 	if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
2912 		softc->params.blksize = 2048;
2913 
2914 	free(rcap_buf, M_SCSICD);
2915 	*size = softc->params.disksize;
2916 
2917 	return (error);
2918 
2919 }
2920 #endif
2921 
2922 static int
2923 cd6byteworkaround(union ccb *ccb)
2924 {
2925 	uint8_t *cdb;
2926 	struct cam_periph *periph;
2927 	struct cd_softc *softc;
2928 	struct cd_mode_params *params;
2929 	int frozen, found;
2930 
2931 	periph = xpt_path_periph(ccb->ccb_h.path);
2932 	softc = (struct cd_softc *)periph->softc;
2933 
2934 	cdb = ccb->csio.cdb_io.cdb_bytes;
2935 
2936 	if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
2937 	 || ((cdb[0] != MODE_SENSE_6)
2938 	  && (cdb[0] != MODE_SELECT_6)))
2939 		return (0);
2940 
2941 	/*
2942 	 * Because there is no convenient place to stash the overall
2943 	 * cd_mode_params structure pointer, we have to grab it like this.
2944 	 * This means that ALL MODE_SENSE and MODE_SELECT requests in the
2945 	 * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
2946 	 *
2947 	 * XXX It would be nice if, at some point, we could increase the
2948 	 * number of available peripheral private pointers.  Both pointers
2949 	 * are currently used in most every peripheral driver.
2950 	 */
2951 	found = 0;
2952 
2953 	STAILQ_FOREACH(params, &softc->mode_queue, links) {
2954 		if (params->mode_buf == ccb->csio.data_ptr) {
2955 			found = 1;
2956 			break;
2957 		}
2958 	}
2959 
2960 	/*
2961 	 * This shouldn't happen.  All mode sense and mode select
2962 	 * operations in the cd(4) driver MUST go through cdgetmode() and
2963 	 * cdsetmode()!
2964 	 */
2965 	if (found == 0) {
2966 		xpt_print(periph->path,
2967 		    "mode buffer not found in mode queue!\n");
2968 		return (0);
2969 	}
2970 
2971 	params->cdb_size = 10;
2972 	softc->minimum_command_size = 10;
2973 	xpt_print(ccb->ccb_h.path,
2974 	    "%s(6) failed, increasing minimum CDB size to 10 bytes\n",
2975 	    (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
2976 
2977 	if (cdb[0] == MODE_SENSE_6) {
2978 		struct scsi_mode_sense_10 ms10;
2979 		struct scsi_mode_sense_6 *ms6;
2980 		int len;
2981 
2982 		ms6 = (struct scsi_mode_sense_6 *)cdb;
2983 
2984 		bzero(&ms10, sizeof(ms10));
2985 		ms10.opcode = MODE_SENSE_10;
2986 		ms10.byte2 = ms6->byte2;
2987 		ms10.page = ms6->page;
2988 
2989 		/*
2990 		 * 10 byte mode header, block descriptor,
2991 		 * sizeof(union cd_pages)
2992 		 */
2993 		len = sizeof(struct cd_mode_data_10);
2994 		ccb->csio.dxfer_len = len;
2995 
2996 		scsi_ulto2b(len, ms10.length);
2997 		ms10.control = ms6->control;
2998 		bcopy(&ms10, cdb, 10);
2999 		ccb->csio.cdb_len = 10;
3000 	} else {
3001 		struct scsi_mode_select_10 ms10;
3002 		struct scsi_mode_select_6 *ms6;
3003 		struct scsi_mode_header_6 *header6;
3004 		struct scsi_mode_header_10 *header10;
3005 		struct scsi_mode_page_header *page_header;
3006 		int blk_desc_len, page_num, page_size, len;
3007 
3008 		ms6 = (struct scsi_mode_select_6 *)cdb;
3009 
3010 		bzero(&ms10, sizeof(ms10));
3011 		ms10.opcode = MODE_SELECT_10;
3012 		ms10.byte2 = ms6->byte2;
3013 
3014 		header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3015 		header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3016 
3017 		page_header = find_mode_page_6(header6);
3018 		page_num = page_header->page_code;
3019 
3020 		blk_desc_len = header6->blk_desc_len;
3021 
3022 		page_size = cdgetpagesize(page_num);
3023 
3024 		if (page_size != (page_header->page_length +
3025 		    sizeof(*page_header)))
3026 			page_size = page_header->page_length +
3027 				sizeof(*page_header);
3028 
3029 		len = sizeof(*header10) + blk_desc_len + page_size;
3030 
3031 		len = min(params->alloc_len, len);
3032 
3033 		/*
3034 		 * Since the 6 byte parameter header is shorter than the 10
3035 		 * byte parameter header, we need to copy the actual mode
3036 		 * page data, and the block descriptor, if any, so things wind
3037 		 * up in the right place.  The regions will overlap, but
3038 		 * bcopy() does the right thing.
3039 		 */
3040 		bcopy(params->mode_buf + sizeof(*header6),
3041 		      params->mode_buf + sizeof(*header10),
3042 		      len - sizeof(*header10));
3043 
3044 		/* Make sure these fields are set correctly. */
3045 		scsi_ulto2b(0, header10->data_length);
3046 		header10->medium_type = 0;
3047 		scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3048 
3049 		ccb->csio.dxfer_len = len;
3050 
3051 		scsi_ulto2b(len, ms10.length);
3052 		ms10.control = ms6->control;
3053 		bcopy(&ms10, cdb, 10);
3054 		ccb->csio.cdb_len = 10;
3055 	}
3056 
3057 	frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3058 	ccb->ccb_h.status = CAM_REQUEUE_REQ;
3059 	xpt_action(ccb);
3060 	if (frozen) {
3061 		cam_release_devq(ccb->ccb_h.path,
3062 				 /*relsim_flags*/0,
3063 				 /*openings*/0,
3064 				 /*timeout*/0,
3065 				 /*getcount_only*/0);
3066 	}
3067 
3068 	return (ERESTART);
3069 }
3070 
3071 static int
3072 cderror(union ccb *ccb, uint32_t cam_flags, uint32_t sense_flags)
3073 {
3074 	struct cd_softc *softc;
3075 	struct cam_periph *periph;
3076 	int error, error_code, sense_key, asc, ascq;
3077 
3078 	periph = xpt_path_periph(ccb->ccb_h.path);
3079 	softc = (struct cd_softc *)periph->softc;
3080 
3081 	cam_periph_assert(periph, MA_OWNED);
3082 
3083 	/*
3084 	 * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3085 	 * CDB comes back with this particular error, try transforming it
3086 	 * into the 10 byte version.
3087 	 */
3088 	error = 0;
3089 	if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3090 		error = cd6byteworkaround(ccb);
3091 	} else if (scsi_extract_sense_ccb(ccb,
3092 	    &error_code, &sense_key, &asc, &ascq)) {
3093 		if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3094 			error = cd6byteworkaround(ccb);
3095 		else if (sense_key == SSD_KEY_UNIT_ATTENTION &&
3096 		    asc == 0x28 && ascq == 0x00)
3097 			disk_media_changed(softc->disk, M_NOWAIT);
3098 		else if (sense_key == SSD_KEY_NOT_READY &&
3099 		    asc == 0x3a && (softc->flags & CD_FLAG_SAW_MEDIA)) {
3100 			softc->flags &= ~CD_FLAG_SAW_MEDIA;
3101 			disk_media_gone(softc->disk, M_NOWAIT);
3102 		}
3103 	}
3104 
3105 	if (error == ERESTART)
3106 		return (error);
3107 
3108 	/*
3109 	 * XXX
3110 	 * Until we have a better way of doing pack validation,
3111 	 * don't treat UAs as errors.
3112 	 */
3113 	sense_flags |= SF_RETRY_UA;
3114 
3115 	if (softc->quirks & CD_Q_RETRY_BUSY)
3116 		sense_flags |= SF_RETRY_BUSY;
3117 	return (cam_periph_error(ccb, cam_flags, sense_flags));
3118 }
3119 
3120 static void
3121 cdmediapoll(void *arg)
3122 {
3123 	struct cam_periph *periph = arg;
3124 	struct cd_softc *softc = periph->softc;
3125 
3126 	if (softc->state == CD_STATE_NORMAL && !softc->tur &&
3127 	    softc->outstanding_cmds == 0) {
3128 		if (cam_periph_acquire(periph) == 0) {
3129 			softc->tur = 1;
3130 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
3131 		}
3132 	}
3133 
3134 	/* Queue us up again */
3135 	if (cd_poll_period != 0) {
3136 		callout_schedule_sbt(&softc->mediapoll_c,
3137 		    cd_poll_period * SBT_1S, 0, C_PREL(1));
3138 	}
3139 }
3140 
3141 /*
3142  * Read table of contents
3143  */
3144 static int
3145 cdreadtoc(struct cam_periph *periph, uint32_t mode, uint32_t start,
3146 	  uint8_t *data, uint32_t len, uint32_t sense_flags)
3147 {
3148         struct ccb_scsiio *csio;
3149 	union ccb *ccb;
3150 	int error;
3151 
3152 	error = 0;
3153 
3154 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3155 
3156 	csio = &ccb->csio;
3157 
3158 	scsi_read_toc(csio,
3159 		      /* retries */ cd_retry_count,
3160 		      /* cbfcnp */ NULL,
3161 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3162 		      /* byte1_flags */ (mode == CD_MSF_FORMAT) ? CD_MSF : 0,
3163 		      /* format */ SRTOC_FORMAT_TOC,
3164 		      /* track*/ start,
3165 		      /* data_ptr */ data,
3166 		      /* dxfer_len */ len,
3167 		      /* sense_len */ SSD_FULL_SIZE,
3168 		      /* timeout */ 50000);
3169 
3170 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3171 			 /*sense_flags*/SF_RETRY_UA | sense_flags);
3172 
3173 	xpt_release_ccb(ccb);
3174 
3175 	return(error);
3176 }
3177 
3178 static int
3179 cdreadsubchannel(struct cam_periph *periph, uint32_t mode,
3180 		 uint32_t format, int track,
3181 		 struct cd_sub_channel_info *data, uint32_t len)
3182 {
3183 	struct scsi_read_subchannel *scsi_cmd;
3184         struct ccb_scsiio *csio;
3185 	union ccb *ccb;
3186 	int error;
3187 
3188 	error = 0;
3189 
3190 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3191 
3192 	csio = &ccb->csio;
3193 
3194 	cam_fill_csio(csio,
3195 		      /* retries */ cd_retry_count,
3196 		      /* cbfcnp */ NULL,
3197 		      /* flags */ CAM_DIR_IN,
3198 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3199 		      /* data_ptr */ (uint8_t *)data,
3200 		      /* dxfer_len */ len,
3201 		      /* sense_len */ SSD_FULL_SIZE,
3202 		      sizeof(struct scsi_read_subchannel),
3203 		      /* timeout */ 50000);
3204 
3205 	scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3206 	bzero (scsi_cmd, sizeof(*scsi_cmd));
3207 
3208 	scsi_cmd->op_code = READ_SUBCHANNEL;
3209 	if (mode == CD_MSF_FORMAT)
3210 		scsi_cmd->byte1 |= CD_MSF;
3211 	scsi_cmd->byte2 = SRS_SUBQ;
3212 	scsi_cmd->subchan_format = format;
3213 	scsi_cmd->track = track;
3214 	scsi_ulto2b(len, (uint8_t *)scsi_cmd->data_len);
3215 	scsi_cmd->control = 0;
3216 
3217 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3218 			 /*sense_flags*/SF_RETRY_UA);
3219 
3220 	xpt_release_ccb(ccb);
3221 
3222 	return(error);
3223 }
3224 
3225 /*
3226  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3227  * routine.  See comments in cd6byteworkaround() for details.
3228  */
3229 static int
3230 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3231 	  uint32_t page)
3232 {
3233 	struct ccb_scsiio *csio;
3234 	struct cd_softc *softc;
3235 	union ccb *ccb;
3236 	int param_len;
3237 	int error;
3238 
3239 	softc = (struct cd_softc *)periph->softc;
3240 
3241 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3242 
3243 	csio = &ccb->csio;
3244 
3245 	data->cdb_size = softc->minimum_command_size;
3246 	if (data->cdb_size < 10)
3247 		param_len = sizeof(struct cd_mode_data);
3248 	else
3249 		param_len = sizeof(struct cd_mode_data_10);
3250 
3251 	/* Don't say we've got more room than we actually allocated */
3252 	param_len = min(param_len, data->alloc_len);
3253 
3254 	scsi_mode_sense_len(csio,
3255 			    /* retries */ cd_retry_count,
3256 			    /* cbfcnp */ NULL,
3257 			    /* tag_action */ MSG_SIMPLE_Q_TAG,
3258 			    /* dbd */ 0,
3259 			    /* page_code */ SMS_PAGE_CTRL_CURRENT,
3260 			    /* page */ page,
3261 			    /* param_buf */ data->mode_buf,
3262 			    /* param_len */ param_len,
3263 			    /* minimum_cmd_size */ softc->minimum_command_size,
3264 			    /* sense_len */ SSD_FULL_SIZE,
3265 			    /* timeout */ 50000);
3266 
3267 	/*
3268 	 * It would be nice not to have to do this, but there's no
3269 	 * available pointer in the CCB that would allow us to stuff the
3270 	 * mode params structure in there and retrieve it in
3271 	 * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3272 	 * lets the caller know what CDB size we ended up using, so they
3273 	 * can find the actual mode page offset.
3274 	 */
3275 	STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3276 
3277 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3278 			 /*sense_flags*/SF_RETRY_UA);
3279 
3280 	xpt_release_ccb(ccb);
3281 
3282 	STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3283 
3284 	/*
3285 	 * This is a bit of belt-and-suspenders checking, but if we run
3286 	 * into a situation where the target sends back multiple block
3287 	 * descriptors, we might not have enough space in the buffer to
3288 	 * see the whole mode page.  Better to return an error than
3289 	 * potentially access memory beyond our malloced region.
3290 	 */
3291 	if (error == 0) {
3292 		uint32_t data_len;
3293 
3294 		if (data->cdb_size == 10) {
3295 			struct scsi_mode_header_10 *hdr10;
3296 
3297 			hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3298 			data_len = scsi_2btoul(hdr10->data_length);
3299 			data_len += sizeof(hdr10->data_length);
3300 		} else {
3301 			struct scsi_mode_header_6 *hdr6;
3302 
3303 			hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3304 			data_len = hdr6->data_length;
3305 			data_len += sizeof(hdr6->data_length);
3306 		}
3307 
3308 		/*
3309 		 * Complain if there is more mode data available than we
3310 		 * allocated space for.  This could potentially happen if
3311 		 * we miscalculated the page length for some reason, if the
3312 		 * drive returns multiple block descriptors, or if it sets
3313 		 * the data length incorrectly.
3314 		 */
3315 		if (data_len > data->alloc_len) {
3316 			xpt_print(periph->path, "allocated modepage %d length "
3317 			    "%d < returned length %d\n", page, data->alloc_len,
3318 			    data_len);
3319 			error = ENOSPC;
3320 		}
3321 	}
3322 	return (error);
3323 }
3324 
3325 /*
3326  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3327  * routine.  See comments in cd6byteworkaround() for details.
3328  */
3329 static int
3330 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3331 {
3332 	struct ccb_scsiio *csio;
3333 	struct cd_softc *softc;
3334 	union ccb *ccb;
3335 	int cdb_size, param_len;
3336 	int error;
3337 
3338 	softc = (struct cd_softc *)periph->softc;
3339 
3340 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3341 
3342 	csio = &ccb->csio;
3343 
3344 	error = 0;
3345 
3346 	/*
3347 	 * If the data is formatted for the 10 byte version of the mode
3348 	 * select parameter list, we need to use the 10 byte CDB.
3349 	 * Otherwise, we use whatever the stored minimum command size.
3350 	 */
3351 	if (data->cdb_size == 10)
3352 		cdb_size = data->cdb_size;
3353 	else
3354 		cdb_size = softc->minimum_command_size;
3355 
3356 	if (cdb_size >= 10) {
3357 		struct scsi_mode_header_10 *mode_header;
3358 		uint32_t data_len;
3359 
3360 		mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3361 
3362 		data_len = scsi_2btoul(mode_header->data_length);
3363 
3364 		scsi_ulto2b(0, mode_header->data_length);
3365 		/*
3366 		 * SONY drives do not allow a mode select with a medium_type
3367 		 * value that has just been returned by a mode sense; use a
3368 		 * medium_type of 0 (Default) instead.
3369 		 */
3370 		mode_header->medium_type = 0;
3371 
3372 		/*
3373 		 * Pass back whatever the drive passed to us, plus the size
3374 		 * of the data length field.
3375 		 */
3376 		param_len = data_len + sizeof(mode_header->data_length);
3377 
3378 	} else {
3379 		struct scsi_mode_header_6 *mode_header;
3380 
3381 		mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3382 
3383 		param_len = mode_header->data_length + 1;
3384 
3385 		mode_header->data_length = 0;
3386 		/*
3387 		 * SONY drives do not allow a mode select with a medium_type
3388 		 * value that has just been returned by a mode sense; use a
3389 		 * medium_type of 0 (Default) instead.
3390 		 */
3391 		mode_header->medium_type = 0;
3392 	}
3393 
3394 	/* Don't say we've got more room than we actually allocated */
3395 	param_len = min(param_len, data->alloc_len);
3396 
3397 	scsi_mode_select_len(csio,
3398 			     /* retries */ cd_retry_count,
3399 			     /* cbfcnp */ NULL,
3400 			     /* tag_action */ MSG_SIMPLE_Q_TAG,
3401 			     /* scsi_page_fmt */ 1,
3402 			     /* save_pages */ 0,
3403 			     /* param_buf */ data->mode_buf,
3404 			     /* param_len */ param_len,
3405 			     /* minimum_cmd_size */ cdb_size,
3406 			     /* sense_len */ SSD_FULL_SIZE,
3407 			     /* timeout */ 50000);
3408 
3409 	/* See comments in cdgetmode() and cd6byteworkaround(). */
3410 	STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3411 
3412 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3413 			 /*sense_flags*/SF_RETRY_UA);
3414 
3415 	xpt_release_ccb(ccb);
3416 
3417 	STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3418 
3419 	return (error);
3420 }
3421 
3422 static int
3423 cdplay(struct cam_periph *periph, uint32_t blk, uint32_t len)
3424 {
3425 	struct ccb_scsiio *csio;
3426 	union ccb *ccb;
3427 	int error;
3428 	uint8_t cdb_len;
3429 
3430 	error = 0;
3431 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3432 	csio = &ccb->csio;
3433 	/*
3434 	 * Use the smallest possible command to perform the operation.
3435 	 */
3436 	if ((len & 0xffff0000) == 0) {
3437 		/*
3438 		 * We can fit in a 10 byte cdb.
3439 		 */
3440 		struct scsi_play_10 *scsi_cmd;
3441 
3442 		scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3443 		bzero (scsi_cmd, sizeof(*scsi_cmd));
3444 		scsi_cmd->op_code = PLAY_10;
3445 		scsi_ulto4b(blk, (uint8_t *)scsi_cmd->blk_addr);
3446 		scsi_ulto2b(len, (uint8_t *)scsi_cmd->xfer_len);
3447 		cdb_len = sizeof(*scsi_cmd);
3448 	} else  {
3449 		struct scsi_play_12 *scsi_cmd;
3450 
3451 		scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3452 		bzero (scsi_cmd, sizeof(*scsi_cmd));
3453 		scsi_cmd->op_code = PLAY_12;
3454 		scsi_ulto4b(blk, (uint8_t *)scsi_cmd->blk_addr);
3455 		scsi_ulto4b(len, (uint8_t *)scsi_cmd->xfer_len);
3456 		cdb_len = sizeof(*scsi_cmd);
3457 	}
3458 	cam_fill_csio(csio,
3459 		      /*retries*/ cd_retry_count,
3460 		      /*cbfcnp*/NULL,
3461 		      /*flags*/CAM_DIR_NONE,
3462 		      MSG_SIMPLE_Q_TAG,
3463 		      /*dataptr*/NULL,
3464 		      /*datalen*/0,
3465 		      /*sense_len*/SSD_FULL_SIZE,
3466 		      cdb_len,
3467 		      /*timeout*/50 * 1000);
3468 
3469 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3470 			 /*sense_flags*/SF_RETRY_UA);
3471 
3472 	xpt_release_ccb(ccb);
3473 
3474 	return(error);
3475 }
3476 
3477 static int
3478 cdplaymsf(struct cam_periph *periph, uint32_t startm, uint32_t starts,
3479 	  uint32_t startf, uint32_t endm, uint32_t ends, uint32_t endf)
3480 {
3481 	struct scsi_play_msf *scsi_cmd;
3482         struct ccb_scsiio *csio;
3483 	union ccb *ccb;
3484 	int error;
3485 
3486 	error = 0;
3487 
3488 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3489 
3490 	csio = &ccb->csio;
3491 
3492 	cam_fill_csio(csio,
3493 		      /* retries */ cd_retry_count,
3494 		      /* cbfcnp */ NULL,
3495 		      /* flags */ CAM_DIR_NONE,
3496 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3497 		      /* data_ptr */ NULL,
3498 		      /* dxfer_len */ 0,
3499 		      /* sense_len */ SSD_FULL_SIZE,
3500 		      sizeof(struct scsi_play_msf),
3501 		      /* timeout */ 50000);
3502 
3503 	scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3504 	bzero (scsi_cmd, sizeof(*scsi_cmd));
3505 
3506         scsi_cmd->op_code = PLAY_MSF;
3507         scsi_cmd->start_m = startm;
3508         scsi_cmd->start_s = starts;
3509         scsi_cmd->start_f = startf;
3510         scsi_cmd->end_m = endm;
3511         scsi_cmd->end_s = ends;
3512         scsi_cmd->end_f = endf;
3513 
3514 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3515 			 /*sense_flags*/SF_RETRY_UA);
3516 
3517 	xpt_release_ccb(ccb);
3518 
3519 	return(error);
3520 }
3521 
3522 static int
3523 cdplaytracks(struct cam_periph *periph, uint32_t strack, uint32_t sindex,
3524 	     uint32_t etrack, uint32_t eindex)
3525 {
3526 	struct scsi_play_track *scsi_cmd;
3527         struct ccb_scsiio *csio;
3528 	union ccb *ccb;
3529 	int error;
3530 
3531 	error = 0;
3532 
3533 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3534 
3535 	csio = &ccb->csio;
3536 
3537 	cam_fill_csio(csio,
3538 		      /* retries */ cd_retry_count,
3539 		      /* cbfcnp */ NULL,
3540 		      /* flags */ CAM_DIR_NONE,
3541 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3542 		      /* data_ptr */ NULL,
3543 		      /* dxfer_len */ 0,
3544 		      /* sense_len */ SSD_FULL_SIZE,
3545 		      sizeof(struct scsi_play_track),
3546 		      /* timeout */ 50000);
3547 
3548 	scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3549 	bzero (scsi_cmd, sizeof(*scsi_cmd));
3550 
3551         scsi_cmd->op_code = PLAY_TRACK;
3552         scsi_cmd->start_track = strack;
3553         scsi_cmd->start_index = sindex;
3554         scsi_cmd->end_track = etrack;
3555         scsi_cmd->end_index = eindex;
3556 
3557 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3558 			 /*sense_flags*/SF_RETRY_UA);
3559 
3560 	xpt_release_ccb(ccb);
3561 
3562 	return(error);
3563 }
3564 
3565 static int
3566 cdpause(struct cam_periph *periph, uint32_t go)
3567 {
3568 	struct scsi_pause *scsi_cmd;
3569         struct ccb_scsiio *csio;
3570 	union ccb *ccb;
3571 	int error;
3572 
3573 	error = 0;
3574 
3575 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3576 
3577 	csio = &ccb->csio;
3578 
3579 	cam_fill_csio(csio,
3580 		      /* retries */ cd_retry_count,
3581 		      /* cbfcnp */ NULL,
3582 		      /* flags */ CAM_DIR_NONE,
3583 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3584 		      /* data_ptr */ NULL,
3585 		      /* dxfer_len */ 0,
3586 		      /* sense_len */ SSD_FULL_SIZE,
3587 		      sizeof(struct scsi_pause),
3588 		      /* timeout */ 50000);
3589 
3590 	scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3591 	bzero (scsi_cmd, sizeof(*scsi_cmd));
3592 
3593         scsi_cmd->op_code = PAUSE;
3594 	scsi_cmd->resume = go;
3595 
3596 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3597 			 /*sense_flags*/SF_RETRY_UA);
3598 
3599 	xpt_release_ccb(ccb);
3600 
3601 	return(error);
3602 }
3603 
3604 static int
3605 cdstartunit(struct cam_periph *periph, int load)
3606 {
3607 	union ccb *ccb;
3608 	int error;
3609 
3610 	error = 0;
3611 
3612 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3613 
3614 	scsi_start_stop(&ccb->csio,
3615 			/* retries */ cd_retry_count,
3616 			/* cbfcnp */ NULL,
3617 			/* tag_action */ MSG_SIMPLE_Q_TAG,
3618 			/* start */ TRUE,
3619 			/* load_eject */ load,
3620 			/* immediate */ FALSE,
3621 			/* sense_len */ SSD_FULL_SIZE,
3622 			/* timeout */ 50000);
3623 
3624 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3625 			 /*sense_flags*/SF_RETRY_UA);
3626 
3627 	xpt_release_ccb(ccb);
3628 
3629 	return(error);
3630 }
3631 
3632 static int
3633 cdstopunit(struct cam_periph *periph, uint32_t eject)
3634 {
3635 	union ccb *ccb;
3636 	int error;
3637 
3638 	error = 0;
3639 
3640 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3641 
3642 	scsi_start_stop(&ccb->csio,
3643 			/* retries */ cd_retry_count,
3644 			/* cbfcnp */ NULL,
3645 			/* tag_action */ MSG_SIMPLE_Q_TAG,
3646 			/* start */ FALSE,
3647 			/* load_eject */ eject,
3648 			/* immediate */ FALSE,
3649 			/* sense_len */ SSD_FULL_SIZE,
3650 			/* timeout */ 50000);
3651 
3652 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3653 			 /*sense_flags*/SF_RETRY_UA);
3654 
3655 	xpt_release_ccb(ccb);
3656 
3657 	return(error);
3658 }
3659 
3660 static int
3661 cdsetspeed(struct cam_periph *periph, uint32_t rdspeed, uint32_t wrspeed)
3662 {
3663 	struct scsi_set_speed *scsi_cmd;
3664 	struct ccb_scsiio *csio;
3665 	union ccb *ccb;
3666 	int error;
3667 
3668 	error = 0;
3669 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3670 	csio = &ccb->csio;
3671 
3672 	/* Preserve old behavior: units in multiples of CDROM speed */
3673 	if (rdspeed < 177)
3674 		rdspeed *= 177;
3675 	if (wrspeed < 177)
3676 		wrspeed *= 177;
3677 
3678 	cam_fill_csio(csio,
3679 		      /* retries */ cd_retry_count,
3680 		      /* cbfcnp */ NULL,
3681 		      /* flags */ CAM_DIR_NONE,
3682 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3683 		      /* data_ptr */ NULL,
3684 		      /* dxfer_len */ 0,
3685 		      /* sense_len */ SSD_FULL_SIZE,
3686 		      sizeof(struct scsi_set_speed),
3687 		      /* timeout */ 50000);
3688 
3689 	scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3690 	bzero(scsi_cmd, sizeof(*scsi_cmd));
3691 
3692 	scsi_cmd->opcode = SET_CD_SPEED;
3693 	scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3694 	scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3695 
3696 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3697 			 /*sense_flags*/SF_RETRY_UA);
3698 
3699 	xpt_release_ccb(ccb);
3700 
3701 	return(error);
3702 }
3703 
3704 static int
3705 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3706 {
3707 	union ccb *ccb;
3708 	uint8_t *databuf;
3709 	uint32_t lba;
3710 	int error;
3711 	int length;
3712 
3713 	error = 0;
3714 	databuf = NULL;
3715 	lba = 0;
3716 
3717 	switch (authinfo->format) {
3718 	case DVD_REPORT_AGID:
3719 		length = sizeof(struct scsi_report_key_data_agid);
3720 		break;
3721 	case DVD_REPORT_CHALLENGE:
3722 		length = sizeof(struct scsi_report_key_data_challenge);
3723 		break;
3724 	case DVD_REPORT_KEY1:
3725 		length = sizeof(struct scsi_report_key_data_key1_key2);
3726 		break;
3727 	case DVD_REPORT_TITLE_KEY:
3728 		length = sizeof(struct scsi_report_key_data_title);
3729 		/* The lba field is only set for the title key */
3730 		lba = authinfo->lba;
3731 		break;
3732 	case DVD_REPORT_ASF:
3733 		length = sizeof(struct scsi_report_key_data_asf);
3734 		break;
3735 	case DVD_REPORT_RPC:
3736 		length = sizeof(struct scsi_report_key_data_rpc);
3737 		break;
3738 	case DVD_INVALIDATE_AGID:
3739 		length = 0;
3740 		break;
3741 	default:
3742 		return (EINVAL);
3743 	}
3744 
3745 	if (length != 0) {
3746 		databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3747 	} else
3748 		databuf = NULL;
3749 
3750 	cam_periph_lock(periph);
3751 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3752 
3753 	scsi_report_key(&ccb->csio,
3754 			/* retries */ cd_retry_count,
3755 			/* cbfcnp */ NULL,
3756 			/* tag_action */ MSG_SIMPLE_Q_TAG,
3757 			/* lba */ lba,
3758 			/* agid */ authinfo->agid,
3759 			/* key_format */ authinfo->format,
3760 			/* data_ptr */ databuf,
3761 			/* dxfer_len */ length,
3762 			/* sense_len */ SSD_FULL_SIZE,
3763 			/* timeout */ 50000);
3764 
3765 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3766 			 /*sense_flags*/SF_RETRY_UA);
3767 
3768 	if (error != 0)
3769 		goto bailout;
3770 
3771 	if (ccb->csio.resid != 0) {
3772 		xpt_print(periph->path, "warning, residual for report key "
3773 		    "command is %d\n", ccb->csio.resid);
3774 	}
3775 
3776 	switch(authinfo->format) {
3777 	case DVD_REPORT_AGID: {
3778 		struct scsi_report_key_data_agid *agid_data;
3779 
3780 		agid_data = (struct scsi_report_key_data_agid *)databuf;
3781 
3782 		authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3783 			RKD_AGID_SHIFT;
3784 		break;
3785 	}
3786 	case DVD_REPORT_CHALLENGE: {
3787 		struct scsi_report_key_data_challenge *chal_data;
3788 
3789 		chal_data = (struct scsi_report_key_data_challenge *)databuf;
3790 
3791 		bcopy(chal_data->challenge_key, authinfo->keychal,
3792 		      min(sizeof(chal_data->challenge_key),
3793 		          sizeof(authinfo->keychal)));
3794 		break;
3795 	}
3796 	case DVD_REPORT_KEY1: {
3797 		struct scsi_report_key_data_key1_key2 *key1_data;
3798 
3799 		key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3800 
3801 		bcopy(key1_data->key1, authinfo->keychal,
3802 		      min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3803 		break;
3804 	}
3805 	case DVD_REPORT_TITLE_KEY: {
3806 		struct scsi_report_key_data_title *title_data;
3807 
3808 		title_data = (struct scsi_report_key_data_title *)databuf;
3809 
3810 		authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3811 			RKD_TITLE_CPM_SHIFT;
3812 		authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3813 			RKD_TITLE_CP_SEC_SHIFT;
3814 		authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3815 			RKD_TITLE_CMGS_SHIFT;
3816 		bcopy(title_data->title_key, authinfo->keychal,
3817 		      min(sizeof(title_data->title_key),
3818 			  sizeof(authinfo->keychal)));
3819 		break;
3820 	}
3821 	case DVD_REPORT_ASF: {
3822 		struct scsi_report_key_data_asf *asf_data;
3823 
3824 		asf_data = (struct scsi_report_key_data_asf *)databuf;
3825 
3826 		authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3827 		break;
3828 	}
3829 	case DVD_REPORT_RPC: {
3830 		struct scsi_report_key_data_rpc *rpc_data;
3831 
3832 		rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3833 
3834 		authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3835 			RKD_RPC_TYPE_SHIFT;
3836 		authinfo->vend_rsts =
3837 			(rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3838 			RKD_RPC_VENDOR_RESET_SHIFT;
3839 		authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3840 		authinfo->region = rpc_data->region_mask;
3841 		authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3842 		break;
3843 	}
3844 	case DVD_INVALIDATE_AGID:
3845 		break;
3846 	default:
3847 		/* This should be impossible, since we checked above */
3848 		error = EINVAL;
3849 		goto bailout;
3850 		break; /* NOTREACHED */
3851 	}
3852 
3853 bailout:
3854 	xpt_release_ccb(ccb);
3855 	cam_periph_unlock(periph);
3856 
3857 	if (databuf != NULL)
3858 		free(databuf, M_DEVBUF);
3859 
3860 	return(error);
3861 }
3862 
3863 static int
3864 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3865 {
3866 	union ccb *ccb;
3867 	uint8_t *databuf;
3868 	int length;
3869 	int error;
3870 
3871 	error = 0;
3872 	databuf = NULL;
3873 
3874 	switch(authinfo->format) {
3875 	case DVD_SEND_CHALLENGE: {
3876 		struct scsi_report_key_data_challenge *challenge_data;
3877 
3878 		length = sizeof(*challenge_data);
3879 
3880 		challenge_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3881 
3882 		databuf = (uint8_t *)challenge_data;
3883 
3884 		scsi_ulto2b(length - sizeof(challenge_data->data_len),
3885 			    challenge_data->data_len);
3886 
3887 		bcopy(authinfo->keychal, challenge_data->challenge_key,
3888 		      min(sizeof(authinfo->keychal),
3889 			  sizeof(challenge_data->challenge_key)));
3890 		break;
3891 	}
3892 	case DVD_SEND_KEY2: {
3893 		struct scsi_report_key_data_key1_key2 *key2_data;
3894 
3895 		length = sizeof(*key2_data);
3896 
3897 		key2_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3898 
3899 		databuf = (uint8_t *)key2_data;
3900 
3901 		scsi_ulto2b(length - sizeof(key2_data->data_len),
3902 			    key2_data->data_len);
3903 
3904 		bcopy(authinfo->keychal, key2_data->key1,
3905 		      min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
3906 
3907 		break;
3908 	}
3909 	case DVD_SEND_RPC: {
3910 		struct scsi_send_key_data_rpc *rpc_data;
3911 
3912 		length = sizeof(*rpc_data);
3913 
3914 		rpc_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3915 
3916 		databuf = (uint8_t *)rpc_data;
3917 
3918 		scsi_ulto2b(length - sizeof(rpc_data->data_len),
3919 			    rpc_data->data_len);
3920 
3921 		rpc_data->region_code = authinfo->region;
3922 		break;
3923 	}
3924 	default:
3925 		return (EINVAL);
3926 	}
3927 
3928 	cam_periph_lock(periph);
3929 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3930 
3931 	scsi_send_key(&ccb->csio,
3932 		      /* retries */ cd_retry_count,
3933 		      /* cbfcnp */ NULL,
3934 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3935 		      /* agid */ authinfo->agid,
3936 		      /* key_format */ authinfo->format,
3937 		      /* data_ptr */ databuf,
3938 		      /* dxfer_len */ length,
3939 		      /* sense_len */ SSD_FULL_SIZE,
3940 		      /* timeout */ 50000);
3941 
3942 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3943 			 /*sense_flags*/SF_RETRY_UA);
3944 
3945 	xpt_release_ccb(ccb);
3946 	cam_periph_unlock(periph);
3947 
3948 	if (databuf != NULL)
3949 		free(databuf, M_DEVBUF);
3950 
3951 	return(error);
3952 }
3953 
3954 static int
3955 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
3956 {
3957 	union ccb *ccb;
3958 	uint8_t *databuf;
3959 	uint32_t address;
3960 	int error;
3961 	int length;
3962 
3963 	error = 0;
3964 	databuf = NULL;
3965 	/* The address is reserved for many of the formats */
3966 	address = 0;
3967 
3968 	switch(dvdstruct->format) {
3969 	case DVD_STRUCT_PHYSICAL:
3970 		length = sizeof(struct scsi_read_dvd_struct_data_physical);
3971 		break;
3972 	case DVD_STRUCT_COPYRIGHT:
3973 		length = sizeof(struct scsi_read_dvd_struct_data_copyright);
3974 		break;
3975 	case DVD_STRUCT_DISCKEY:
3976 		length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
3977 		break;
3978 	case DVD_STRUCT_BCA:
3979 		length = sizeof(struct scsi_read_dvd_struct_data_bca);
3980 		break;
3981 	case DVD_STRUCT_MANUFACT:
3982 		length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
3983 		break;
3984 	case DVD_STRUCT_CMI:
3985 		return (ENODEV);
3986 	case DVD_STRUCT_PROTDISCID:
3987 		length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
3988 		break;
3989 	case DVD_STRUCT_DISCKEYBLOCK:
3990 		length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
3991 		break;
3992 	case DVD_STRUCT_DDS:
3993 		length = sizeof(struct scsi_read_dvd_struct_data_dds);
3994 		break;
3995 	case DVD_STRUCT_MEDIUM_STAT:
3996 		length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
3997 		break;
3998 	case DVD_STRUCT_SPARE_AREA:
3999 		length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4000 		break;
4001 	case DVD_STRUCT_RMD_LAST:
4002 		return (ENODEV);
4003 	case DVD_STRUCT_RMD_RMA:
4004 		return (ENODEV);
4005 	case DVD_STRUCT_PRERECORDED:
4006 		length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4007 		break;
4008 	case DVD_STRUCT_UNIQUEID:
4009 		length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4010 		break;
4011 	case DVD_STRUCT_DCB:
4012 		return (ENODEV);
4013 	case DVD_STRUCT_LIST:
4014 		/*
4015 		 * This is the maximum allocation length for the READ DVD
4016 		 * STRUCTURE command.  There's nothing in the MMC3 spec
4017 		 * that indicates a limit in the amount of data that can
4018 		 * be returned from this call, other than the limits
4019 		 * imposed by the 2-byte length variables.
4020 		 */
4021 		length = 65535;
4022 		break;
4023 	default:
4024 		return (EINVAL);
4025 	}
4026 
4027 	if (length != 0) {
4028 		databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4029 	} else
4030 		databuf = NULL;
4031 
4032 	cam_periph_lock(periph);
4033 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
4034 
4035 	scsi_read_dvd_structure(&ccb->csio,
4036 				/* retries */ cd_retry_count,
4037 				/* cbfcnp */ NULL,
4038 				/* tag_action */ MSG_SIMPLE_Q_TAG,
4039 				/* lba */ address,
4040 				/* layer_number */ dvdstruct->layer_num,
4041 				/* key_format */ dvdstruct->format,
4042 				/* agid */ dvdstruct->agid,
4043 				/* data_ptr */ databuf,
4044 				/* dxfer_len */ length,
4045 				/* sense_len */ SSD_FULL_SIZE,
4046 				/* timeout */ 50000);
4047 
4048 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4049 			 /*sense_flags*/SF_RETRY_UA);
4050 
4051 	if (error != 0)
4052 		goto bailout;
4053 
4054 	switch(dvdstruct->format) {
4055 	case DVD_STRUCT_PHYSICAL: {
4056 		struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4057 		struct dvd_layer *outlayer;
4058 		struct scsi_read_dvd_struct_data_physical *phys_data;
4059 
4060 		phys_data =
4061 			(struct scsi_read_dvd_struct_data_physical *)databuf;
4062 		inlayer = &phys_data->layer_desc;
4063 		outlayer = (struct dvd_layer *)&dvdstruct->data;
4064 
4065 		dvdstruct->length = sizeof(*inlayer);
4066 
4067 		outlayer->book_type = (inlayer->book_type_version &
4068 			RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4069 		outlayer->book_version = (inlayer->book_type_version &
4070 			RDSD_BOOK_VERSION_MASK);
4071 		outlayer->disc_size = (inlayer->disc_size_max_rate &
4072 			RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4073 		outlayer->max_rate = (inlayer->disc_size_max_rate &
4074 			RDSD_MAX_RATE_MASK);
4075 		outlayer->nlayers = (inlayer->layer_info &
4076 			RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4077 		outlayer->track_path = (inlayer->layer_info &
4078 			RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4079 		outlayer->layer_type = (inlayer->layer_info &
4080 			RDSD_LAYER_TYPE_MASK);
4081 		outlayer->linear_density = (inlayer->density &
4082 			RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4083 		outlayer->track_density = (inlayer->density &
4084 			RDSD_TRACK_DENSITY_MASK);
4085 		outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4086 			RDSD_BCA_SHIFT;
4087 		outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4088 		outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4089 		outlayer->end_sector_l0 =
4090 			scsi_3btoul(inlayer->end_sector_layer0);
4091 		break;
4092 	}
4093 	case DVD_STRUCT_COPYRIGHT: {
4094 		struct scsi_read_dvd_struct_data_copyright *copy_data;
4095 
4096 		copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4097 			databuf;
4098 
4099 		dvdstruct->cpst = copy_data->cps_type;
4100 		dvdstruct->rmi = copy_data->region_info;
4101 		dvdstruct->length = 0;
4102 
4103 		break;
4104 	}
4105 	default:
4106 		/*
4107 		 * Tell the user what the overall length is, no matter
4108 		 * what we can actually fit in the data buffer.
4109 		 */
4110 		dvdstruct->length = length - ccb->csio.resid -
4111 			sizeof(struct scsi_read_dvd_struct_data_header);
4112 
4113 		/*
4114 		 * But only actually copy out the smaller of what we read
4115 		 * in or what the structure can take.
4116 		 */
4117 		bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4118 		      dvdstruct->data,
4119 		      min(sizeof(dvdstruct->data), dvdstruct->length));
4120 		break;
4121 	}
4122 
4123 bailout:
4124 	xpt_release_ccb(ccb);
4125 	cam_periph_unlock(periph);
4126 
4127 	if (databuf != NULL)
4128 		free(databuf, M_DEVBUF);
4129 
4130 	return(error);
4131 }
4132 
4133 void
4134 scsi_report_key(struct ccb_scsiio *csio, uint32_t retries,
4135 		void (*cbfcnp)(struct cam_periph *, union ccb *),
4136 		uint8_t tag_action, uint32_t lba, uint8_t agid,
4137 		uint8_t key_format, uint8_t *data_ptr, uint32_t dxfer_len,
4138 		uint8_t sense_len, uint32_t timeout)
4139 {
4140 	struct scsi_report_key *scsi_cmd;
4141 
4142 	scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4143 	bzero(scsi_cmd, sizeof(*scsi_cmd));
4144 	scsi_cmd->opcode = REPORT_KEY;
4145 	scsi_ulto4b(lba, scsi_cmd->lba);
4146 	scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4147 	scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4148 		(key_format & RK_KF_KEYFORMAT_MASK);
4149 
4150 	cam_fill_csio(csio,
4151 		      retries,
4152 		      cbfcnp,
4153 		      /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4154 		      tag_action,
4155 		      /*data_ptr*/ data_ptr,
4156 		      /*dxfer_len*/ dxfer_len,
4157 		      sense_len,
4158 		      sizeof(*scsi_cmd),
4159 		      timeout);
4160 }
4161 
4162 void
4163 scsi_send_key(struct ccb_scsiio *csio, uint32_t retries,
4164 	      void (*cbfcnp)(struct cam_periph *, union ccb *),
4165 	      uint8_t tag_action, uint8_t agid, uint8_t key_format,
4166 	      uint8_t *data_ptr, uint32_t dxfer_len, uint8_t sense_len,
4167 	      uint32_t timeout)
4168 {
4169 	struct scsi_send_key *scsi_cmd;
4170 
4171 	scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4172 	bzero(scsi_cmd, sizeof(*scsi_cmd));
4173 	scsi_cmd->opcode = SEND_KEY;
4174 
4175 	scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4176 	scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4177 		(key_format & RK_KF_KEYFORMAT_MASK);
4178 
4179 	cam_fill_csio(csio,
4180 		      retries,
4181 		      cbfcnp,
4182 		      /*flags*/ CAM_DIR_OUT,
4183 		      tag_action,
4184 		      /*data_ptr*/ data_ptr,
4185 		      /*dxfer_len*/ dxfer_len,
4186 		      sense_len,
4187 		      sizeof(*scsi_cmd),
4188 		      timeout);
4189 }
4190 
4191 void
4192 scsi_read_dvd_structure(struct ccb_scsiio *csio, uint32_t retries,
4193 			void (*cbfcnp)(struct cam_periph *, union ccb *),
4194 			uint8_t tag_action, uint32_t address,
4195 			uint8_t layer_number, uint8_t format, uint8_t agid,
4196 			uint8_t *data_ptr, uint32_t dxfer_len,
4197 			uint8_t sense_len, uint32_t timeout)
4198 {
4199 	struct scsi_read_dvd_structure *scsi_cmd;
4200 
4201 	scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4202 	bzero(scsi_cmd, sizeof(*scsi_cmd));
4203 	scsi_cmd->opcode = READ_DVD_STRUCTURE;
4204 
4205 	scsi_ulto4b(address, scsi_cmd->address);
4206 	scsi_cmd->layer_number = layer_number;
4207 	scsi_cmd->format = format;
4208 	scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4209 	/* The AGID is the top two bits of this byte */
4210 	scsi_cmd->agid = agid << 6;
4211 
4212 	cam_fill_csio(csio,
4213 		      retries,
4214 		      cbfcnp,
4215 		      /*flags*/ CAM_DIR_IN,
4216 		      tag_action,
4217 		      /*data_ptr*/ data_ptr,
4218 		      /*dxfer_len*/ dxfer_len,
4219 		      sense_len,
4220 		      sizeof(*scsi_cmd),
4221 		      timeout);
4222 }
4223 
4224 void
4225 scsi_read_toc(struct ccb_scsiio *csio, uint32_t retries,
4226 	      void (*cbfcnp)(struct cam_periph *, union ccb *),
4227 	      uint8_t tag_action, uint8_t byte1_flags, uint8_t format,
4228 	      uint8_t track, uint8_t *data_ptr, uint32_t dxfer_len,
4229 	      int sense_len, int timeout)
4230 {
4231 	struct scsi_read_toc *scsi_cmd;
4232 
4233 	scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
4234 	bzero(scsi_cmd, sizeof(*scsi_cmd));
4235 	scsi_cmd->op_code = READ_TOC;
4236 
4237 	/*
4238 	 * The structure is counting from 1, the function counting from 0.
4239 	 * The spec counts from 0.  In MMC-6, there is only one flag, the
4240 	 * MSF flag.  But we put the whole byte in for a bit a future-proofing.
4241 	 */
4242 	scsi_cmd->byte2 = byte1_flags;
4243 	scsi_cmd->format = format;
4244 	scsi_cmd->from_track = track;
4245 	scsi_ulto2b(dxfer_len, scsi_cmd->data_len);
4246 
4247 	cam_fill_csio(csio,
4248 		      /* retries */ retries,
4249 		      /* cbfcnp */ cbfcnp,
4250 		      /* flags */ CAM_DIR_IN,
4251 		      /* tag_action */ tag_action,
4252 		      /* data_ptr */ data_ptr,
4253 		      /* dxfer_len */ dxfer_len,
4254 		      /* sense_len */ sense_len,
4255 		      sizeof(*scsi_cmd),
4256 		      /* timeout */ timeout);
4257 }
4258