xref: /freebsd/sys/cam/scsi/scsi_cd.c (revision a90b9d0159070121c221b966469c3e36d912bf82)
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 "opt_cd.h"
51 
52 #include <sys/param.h>
53 #include <sys/systm.h>
54 #include <sys/kernel.h>
55 #include <sys/bio.h>
56 #include <sys/conf.h>
57 #include <sys/disk.h>
58 #include <sys/malloc.h>
59 #include <sys/cdio.h>
60 #include <sys/cdrio.h>
61 #include <sys/dvdio.h>
62 #include <sys/devicestat.h>
63 #include <sys/proc.h>
64 #include <sys/sbuf.h>
65 #include <sys/sysctl.h>
66 #include <sys/taskqueue.h>
67 #include <geom/geom_disk.h>
68 
69 #include <cam/cam.h>
70 #include <cam/cam_ccb.h>
71 #include <cam/cam_periph.h>
72 #include <cam/cam_xpt_periph.h>
73 #include <cam/cam_queue.h>
74 #include <cam/cam_sim.h>
75 
76 #include <cam/scsi/scsi_message.h>
77 #include <cam/scsi/scsi_da.h>
78 #include <cam/scsi/scsi_cd.h>
79 
80 #define LEADOUT         0xaa            /* leadout toc entry */
81 
82 struct cd_params {
83 	uint32_t blksize;
84 	u_long    disksize;
85 };
86 
87 typedef enum {
88 	CD_Q_NONE		= 0x00,
89 	CD_Q_NO_TOUCH		= 0x01,
90 	CD_Q_BCD_TRACKS		= 0x02,
91 	CD_Q_10_BYTE_ONLY	= 0x10,
92 	CD_Q_RETRY_BUSY		= 0x40
93 } cd_quirks;
94 
95 #define CD_Q_BIT_STRING		\
96 	"\020"			\
97 	"\001NO_TOUCH"		\
98 	"\002BCD_TRACKS"	\
99 	"\00510_BYTE_ONLY"	\
100 	"\007RETRY_BUSY"
101 
102 typedef enum {
103 	CD_FLAG_INVALID		= 0x0001,
104 	CD_FLAG_NEW_DISC	= 0x0002,
105 	CD_FLAG_DISC_LOCKED	= 0x0004,
106 	CD_FLAG_DISC_REMOVABLE	= 0x0008,
107 	CD_FLAG_SAW_MEDIA	= 0x0010,
108 	CD_FLAG_ACTIVE		= 0x0080,
109 	CD_FLAG_SCHED_ON_COMP	= 0x0100,
110 	CD_FLAG_RETRY_UA	= 0x0200,
111 	CD_FLAG_VALID_MEDIA	= 0x0400,
112 	CD_FLAG_VALID_TOC	= 0x0800,
113 	CD_FLAG_SCTX_INIT	= 0x1000,
114 	CD_FLAG_MEDIA_WAIT	= 0x2000,
115 	CD_FLAG_MEDIA_SCAN_ACT	= 0x4000
116 } cd_flags;
117 
118 typedef enum {
119 	CD_CCB_PROBE		= 0x01,
120 	CD_CCB_BUFFER_IO	= 0x02,
121 	CD_CCB_TUR		= 0x03,
122 	CD_CCB_MEDIA_PREVENT	= 0x04,
123 	CD_CCB_MEDIA_ALLOW	= 0x05,
124 	CD_CCB_MEDIA_SIZE	= 0x06,
125 	CD_CCB_MEDIA_TOC_HDR	= 0x07,
126 	CD_CCB_MEDIA_TOC_FULL	= 0x08,
127 	CD_CCB_MEDIA_TOC_LEAD	= 0x09,
128 	CD_CCB_TYPE_MASK	= 0x0F,
129 	CD_CCB_RETRY_UA		= 0x10
130 } cd_ccb_state;
131 
132 #define ccb_state ppriv_field0
133 #define ccb_bp ppriv_ptr1
134 
135 /*
136  * According to the MMC-6 spec, 6.25.3.2.11, the lead-out is reported by
137  * READ_TOC as logical track 170, so at most 169 tracks may be reported.
138  */
139 struct cd_tocdata {
140 	struct ioc_toc_header header;
141 	struct cd_toc_entry entries[170];
142 };
143 
144 struct cd_toc_single {
145 	struct ioc_toc_header header;
146 	struct cd_toc_entry entry;
147 };
148 
149 typedef enum {
150 	CD_STATE_PROBE,
151 	CD_STATE_NORMAL,
152 	CD_STATE_MEDIA_PREVENT,
153 	CD_STATE_MEDIA_ALLOW,
154 	CD_STATE_MEDIA_SIZE,
155 	CD_STATE_MEDIA_TOC_HDR,
156 	CD_STATE_MEDIA_TOC_FULL,
157 	CD_STATE_MEDIA_TOC_LEAD
158 } cd_state;
159 
160 struct cd_softc {
161 	cam_pinfo		pinfo;
162 	cd_state		state;
163 	volatile cd_flags	flags;
164 	struct bio_queue_head	bio_queue;
165 	LIST_HEAD(, ccb_hdr)	pending_ccbs;
166 	struct cd_params	params;
167 	cd_quirks		quirks;
168 	struct cam_periph	*periph;
169 	int			minimum_command_size;
170 	int			outstanding_cmds;
171 	int			tur;
172 	struct task		sysctl_task;
173 	struct sysctl_ctx_list	sysctl_ctx;
174 	struct sysctl_oid	*sysctl_tree;
175 	STAILQ_HEAD(, cd_mode_params)	mode_queue;
176 	struct cd_tocdata	toc;
177 	int			toc_read_len;
178 	struct cd_toc_single	leadout;
179 	struct disk		*disk;
180 	struct callout		mediapoll_c;
181 
182 #define CD_ANNOUNCETMP_SZ 120
183 	char			announce_temp[CD_ANNOUNCETMP_SZ];
184 #define CD_ANNOUNCE_SZ 400
185 	char			announce_buf[CD_ANNOUNCE_SZ];
186 };
187 
188 struct cd_page_sizes {
189 	int page;
190 	int page_size;
191 };
192 
193 static struct cd_page_sizes cd_page_size_table[] =
194 {
195 	{ AUDIO_PAGE, sizeof(struct cd_audio_page)}
196 };
197 
198 struct cd_quirk_entry {
199 	struct scsi_inquiry_pattern inq_pat;
200 	cd_quirks quirks;
201 };
202 
203 /*
204  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
205  * your device hangs when it gets a 10 byte command.  Adding a quirk just
206  * to get rid of the informative diagnostic message is not acceptable.  All
207  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
208  * referenced in a comment along with the quirk) , and must be approved by
209  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
210  * be removed until the submitter can explain why they are needed.
211  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
212  * when the CAM_NEW_TRAN_CODE work is done.
213  */
214 static struct cd_quirk_entry cd_quirk_table[] =
215 {
216 	{
217 		{ T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
218 		/* quirks */ CD_Q_BCD_TRACKS
219 	},
220 	{
221 		/*
222 		 * VMware returns BUSY status when storage has transient
223 		 * connectivity problems, so better wait.
224 		 */
225 		{T_CDROM, SIP_MEDIA_REMOVABLE, "NECVMWar", "VMware IDE CDR10", "*"},
226 		/*quirks*/ CD_Q_RETRY_BUSY
227 	}
228 };
229 
230 #ifdef COMPAT_FREEBSD32
231 struct ioc_read_toc_entry32 {
232 	u_char	address_format;
233 	u_char	starting_track;
234 	u_short	data_len;
235 	uint32_t data;	/* (struct cd_toc_entry *) */
236 };
237 #define	CDIOREADTOCENTRYS_32	\
238     _IOC_NEWTYPE(CDIOREADTOCENTRYS, struct ioc_read_toc_entry32)
239 #endif
240 
241 static	disk_open_t	cdopen;
242 static	disk_close_t	cdclose;
243 static	disk_ioctl_t	cdioctl;
244 static	disk_strategy_t	cdstrategy;
245 
246 static	periph_init_t	cdinit;
247 static	periph_ctor_t	cdregister;
248 static	periph_dtor_t	cdcleanup;
249 static	periph_start_t	cdstart;
250 static	periph_oninv_t	cdoninvalidate;
251 static	void		cdasync(void *callback_arg, uint32_t code,
252 				struct cam_path *path, void *arg);
253 static	int		cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
254 static	int		cdrunccb(union ccb *ccb,
255 				 int (*error_routine)(union ccb *ccb,
256 						      uint32_t cam_flags,
257 						      uint32_t sense_flags),
258 				 uint32_t cam_flags, uint32_t sense_flags);
259 static	void		cddone(struct cam_periph *periph,
260 			       union ccb *start_ccb);
261 static	union cd_pages	*cdgetpage(struct cd_mode_params *mode_params);
262 static	int		cdgetpagesize(int page_num);
263 static	void		cdprevent(struct cam_periph *periph, int action);
264 static	void		cdmediaprobedone(struct cam_periph *periph);
265 static	int		cdcheckmedia(struct cam_periph *periph, bool do_wait);
266 static	int		cd6byteworkaround(union ccb *ccb);
267 static	int		cderror(union ccb *ccb, uint32_t cam_flags,
268 				uint32_t sense_flags);
269 static	int		cdreadtoc(struct cam_periph *periph, uint32_t mode,
270 				  uint32_t start, uint8_t *data,
271 				  uint32_t len, uint32_t sense_flags);
272 static	int		cdgetmode(struct cam_periph *periph,
273 				  struct cd_mode_params *data, uint32_t page);
274 static	int		cdsetmode(struct cam_periph *periph,
275 				  struct cd_mode_params *data);
276 static	int		cdplay(struct cam_periph *periph, uint32_t blk,
277 			       uint32_t len);
278 static	int		cdreadsubchannel(struct cam_periph *periph,
279 					 uint32_t mode, uint32_t format,
280 					 int track,
281 					 struct cd_sub_channel_info *data,
282 					 uint32_t len);
283 static	int		cdplaymsf(struct cam_periph *periph, uint32_t startm,
284 				  uint32_t starts, uint32_t startf,
285 				  uint32_t endm, uint32_t ends,
286 				  uint32_t endf);
287 static	int		cdplaytracks(struct cam_periph *periph,
288 				     uint32_t strack, uint32_t sindex,
289 				     uint32_t etrack, uint32_t eindex);
290 static	int		cdpause(struct cam_periph *periph, uint32_t go);
291 static	int		cdstopunit(struct cam_periph *periph, uint32_t eject);
292 static	int		cdstartunit(struct cam_periph *periph, int load);
293 static	int		cdsetspeed(struct cam_periph *periph,
294 				   uint32_t rdspeed, uint32_t wrspeed);
295 static	int		cdreportkey(struct cam_periph *periph,
296 				    struct dvd_authinfo *authinfo);
297 static	int		cdsendkey(struct cam_periph *periph,
298 				  struct dvd_authinfo *authinfo);
299 static	int		cdreaddvdstructure(struct cam_periph *periph,
300 					   struct dvd_struct *dvdstruct);
301 static	callout_func_t	cdmediapoll;
302 
303 static struct periph_driver cddriver =
304 {
305 	cdinit, "cd",
306 	TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
307 };
308 
309 PERIPHDRIVER_DECLARE(cd, cddriver);
310 
311 #ifndef	CD_DEFAULT_POLL_PERIOD
312 #define	CD_DEFAULT_POLL_PERIOD	3
313 #endif
314 #ifndef	CD_DEFAULT_RETRY
315 #define	CD_DEFAULT_RETRY	4
316 #endif
317 #ifndef	CD_DEFAULT_TIMEOUT
318 #define	CD_DEFAULT_TIMEOUT	30000
319 #endif
320 
321 static int cd_poll_period = CD_DEFAULT_POLL_PERIOD;
322 static int cd_retry_count = CD_DEFAULT_RETRY;
323 static int cd_timeout = CD_DEFAULT_TIMEOUT;
324 
325 static SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
326     "CAM CDROM driver");
327 SYSCTL_INT(_kern_cam_cd, OID_AUTO, poll_period, CTLFLAG_RWTUN,
328            &cd_poll_period, 0, "Media polling period in seconds");
329 SYSCTL_INT(_kern_cam_cd, OID_AUTO, retry_count, CTLFLAG_RWTUN,
330            &cd_retry_count, 0, "Normal I/O retry count");
331 SYSCTL_INT(_kern_cam_cd, OID_AUTO, timeout, CTLFLAG_RWTUN,
332 	   &cd_timeout, 0, "Timeout, in us, for read operations");
333 
334 static MALLOC_DEFINE(M_SCSICD, "scsi_cd", "scsi_cd buffers");
335 
336 static void
337 cdinit(void)
338 {
339 	cam_status status;
340 
341 	/*
342 	 * Install a global async callback.  This callback will
343 	 * receive async callbacks like "new device found".
344 	 */
345 	status = xpt_register_async(AC_FOUND_DEVICE, cdasync, NULL, NULL);
346 
347 	if (status != CAM_REQ_CMP) {
348 		printf("cd: Failed to attach master async callback "
349 		       "due to status 0x%x!\n", status);
350 	}
351 }
352 
353 /*
354  * Callback from GEOM, called when it has finished cleaning up its
355  * resources.
356  */
357 static void
358 cddiskgonecb(struct disk *dp)
359 {
360 	struct cam_periph *periph;
361 
362 	periph = (struct cam_periph *)dp->d_drv1;
363 	cam_periph_release(periph);
364 }
365 
366 static void
367 cdoninvalidate(struct cam_periph *periph)
368 {
369 	struct cd_softc *softc;
370 
371 	cam_periph_assert(periph, MA_OWNED);
372 	softc = (struct cd_softc *)periph->softc;
373 
374 	/*
375 	 * De-register any async callbacks.
376 	 */
377 	xpt_register_async(0, cdasync, periph, periph->path);
378 
379 	softc->flags |= CD_FLAG_INVALID;
380 
381 	/*
382 	 * Return all queued I/O with ENXIO.
383 	 * XXX Handle any transactions queued to the card
384 	 *     with XPT_ABORT_CCB.
385 	 */
386 	bioq_flush(&softc->bio_queue, NULL, ENXIO);
387 
388 	disk_gone(softc->disk);
389 }
390 
391 static void
392 cdcleanup(struct cam_periph *periph)
393 {
394 	struct cd_softc *softc;
395 
396 	softc = (struct cd_softc *)periph->softc;
397 
398 	cam_periph_unlock(periph);
399 	if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
400 	    && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
401 		xpt_print(periph->path, "can't remove sysctl context\n");
402 	}
403 
404 	callout_drain(&softc->mediapoll_c);
405 	disk_destroy(softc->disk);
406 	free(softc, M_DEVBUF);
407 	cam_periph_lock(periph);
408 }
409 
410 static void
411 cdasync(void *callback_arg, uint32_t code,
412 	struct cam_path *path, void *arg)
413 {
414 	struct cam_periph *periph;
415 	struct cd_softc *softc;
416 
417 	periph = (struct cam_periph *)callback_arg;
418 	switch (code) {
419 	case AC_FOUND_DEVICE:
420 	{
421 		struct ccb_getdev *cgd;
422 		cam_status status;
423 
424 		cgd = (struct ccb_getdev *)arg;
425 		if (cgd == NULL)
426 			break;
427 
428 		if (cgd->protocol != PROTO_SCSI)
429 			break;
430 		if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED)
431 			break;
432 		if (SID_TYPE(&cgd->inq_data) != T_CDROM
433 		    && SID_TYPE(&cgd->inq_data) != T_WORM)
434 			break;
435 
436 		/*
437 		 * Allocate a peripheral instance for
438 		 * this device and start the probe
439 		 * process.
440 		 */
441 		status = cam_periph_alloc(cdregister, cdoninvalidate,
442 					  cdcleanup, cdstart,
443 					  "cd", CAM_PERIPH_BIO,
444 					  path, cdasync,
445 					  AC_FOUND_DEVICE, cgd);
446 
447 		if (status != CAM_REQ_CMP
448 		 && status != CAM_REQ_INPROG)
449 			printf("cdasync: Unable to attach new device "
450 			       "due to status 0x%x\n", status);
451 
452 		return;
453 	}
454 	case AC_UNIT_ATTENTION:
455 	{
456 		union ccb *ccb;
457 		int error_code, sense_key, asc, ascq;
458 
459 		softc = (struct cd_softc *)periph->softc;
460 		ccb = (union ccb *)arg;
461 
462 		/*
463 		 * Handle all media change UNIT ATTENTIONs except
464 		 * our own, as they will be handled by cderror().
465 		 */
466 		if (xpt_path_periph(ccb->ccb_h.path) != periph &&
467 		    scsi_extract_sense_ccb(ccb,
468 		     &error_code, &sense_key, &asc, &ascq)) {
469 			if (asc == 0x28 && ascq == 0x00)
470 				disk_media_changed(softc->disk, M_NOWAIT);
471 		}
472 		break;
473 	}
474 	case AC_SCSI_AEN:
475 		cam_periph_assert(periph, MA_OWNED);
476 		softc = (struct cd_softc *)periph->softc;
477 		if (softc->state == CD_STATE_NORMAL && !softc->tur) {
478 			if (cam_periph_acquire(periph) == 0) {
479 				softc->tur = 1;
480 				xpt_schedule(periph, CAM_PRIORITY_NORMAL);
481 			}
482 		}
483 		/* FALLTHROUGH */
484 	case AC_SENT_BDR:
485 	case AC_BUS_RESET:
486 	{
487 		struct ccb_hdr *ccbh;
488 
489 		cam_periph_assert(periph, MA_OWNED);
490 		softc = (struct cd_softc *)periph->softc;
491 		/*
492 		 * Don't fail on the expected unit attention
493 		 * that will occur.
494 		 */
495 		softc->flags |= CD_FLAG_RETRY_UA;
496 		LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
497 			ccbh->ccb_state |= CD_CCB_RETRY_UA;
498 		break;
499 	}
500 	default:
501 		break;
502 	}
503 
504 	cam_periph_async(periph, code, path, arg);
505 }
506 
507 static void
508 cdsysctlinit(void *context, int pending)
509 {
510 	struct cam_periph *periph;
511 	struct cd_softc *softc;
512 	char tmpstr[32], tmpstr2[16];
513 
514 	periph = (struct cam_periph *)context;
515 	if (cam_periph_acquire(periph) != 0)
516 		return;
517 
518 	softc = (struct cd_softc *)periph->softc;
519 	snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
520 	snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
521 
522 	sysctl_ctx_init(&softc->sysctl_ctx);
523 	cam_periph_lock(periph);
524 	softc->flags |= CD_FLAG_SCTX_INIT;
525 	cam_periph_unlock(periph);
526 	softc->sysctl_tree = SYSCTL_ADD_NODE_WITH_LABEL(&softc->sysctl_ctx,
527 		SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
528 		tmpstr2, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, tmpstr,
529 		"device_index");
530 
531 	if (softc->sysctl_tree == NULL) {
532 		printf("cdsysctlinit: unable to allocate sysctl tree\n");
533 		cam_periph_release(periph);
534 		return;
535 	}
536 
537 	/*
538 	 * Now register the sysctl handler, so the user can the value on
539 	 * the fly.
540 	 */
541 	SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
542 		OID_AUTO, "minimum_cmd_size",
543 		CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
544 		&softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
545 		"Minimum CDB size");
546 
547 	cam_periph_release(periph);
548 }
549 
550 /*
551  * We have a handler function for this so we can check the values when the
552  * user sets them, instead of every time we look at them.
553  */
554 static int
555 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
556 {
557 	int error, value;
558 
559 	value = *(int *)arg1;
560 
561 	error = sysctl_handle_int(oidp, &value, 0, req);
562 
563 	if ((error != 0)
564 	 || (req->newptr == NULL))
565 		return (error);
566 
567 	/*
568 	 * The only real values we can have here are 6 or 10.  I don't
569 	 * really forsee having 12 be an option at any time in the future.
570 	 * So if the user sets something less than or equal to 6, we'll set
571 	 * it to 6.  If he sets something greater than 6, we'll set it to 10.
572 	 *
573 	 * I suppose we could just return an error here for the wrong values,
574 	 * but I don't think it's necessary to do so, as long as we can
575 	 * determine the user's intent without too much trouble.
576 	 */
577 	if (value < 6)
578 		value = 6;
579 	else if (value > 6)
580 		value = 10;
581 
582 	*(int *)arg1 = value;
583 
584 	return (0);
585 }
586 
587 static cam_status
588 cdregister(struct cam_periph *periph, void *arg)
589 {
590 	struct cd_softc *softc;
591 	struct ccb_pathinq cpi;
592 	struct ccb_getdev *cgd;
593 	char tmpstr[80];
594 	caddr_t match;
595 
596 	cgd = (struct ccb_getdev *)arg;
597 	if (cgd == NULL) {
598 		printf("cdregister: no getdev CCB, can't register device\n");
599 		return(CAM_REQ_CMP_ERR);
600 	}
601 
602 	softc = (struct cd_softc *)malloc(sizeof(*softc),M_DEVBUF,
603 	    M_NOWAIT | M_ZERO);
604 	if (softc == NULL) {
605 		printf("cdregister: Unable to probe new device. "
606 		       "Unable to allocate softc\n");
607 		return(CAM_REQ_CMP_ERR);
608 	}
609 
610 	LIST_INIT(&softc->pending_ccbs);
611 	STAILQ_INIT(&softc->mode_queue);
612 	softc->state = CD_STATE_PROBE;
613 	bioq_init(&softc->bio_queue);
614 	if (SID_IS_REMOVABLE(&cgd->inq_data))
615 		softc->flags |= CD_FLAG_DISC_REMOVABLE;
616 
617 	periph->softc = softc;
618 	softc->periph = periph;
619 
620 	/*
621 	 * See if this device has any quirks.
622 	 */
623 	match = cam_quirkmatch((caddr_t)&cgd->inq_data,
624 			       (caddr_t)cd_quirk_table,
625 			       nitems(cd_quirk_table),
626 			       sizeof(*cd_quirk_table), scsi_inquiry_match);
627 
628 	if (match != NULL)
629 		softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
630 	else
631 		softc->quirks = CD_Q_NONE;
632 
633 	/* Check if the SIM does not want 6 byte commands */
634 	xpt_path_inq(&cpi, periph->path);
635 	if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
636 		softc->quirks |= CD_Q_10_BYTE_ONLY;
637 
638 	TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
639 
640 	/* The default is 6 byte commands, unless quirked otherwise */
641 	if (softc->quirks & CD_Q_10_BYTE_ONLY)
642 		softc->minimum_command_size = 10;
643 	else
644 		softc->minimum_command_size = 6;
645 
646 	/*
647 	 * Take a reference on the periph while cdstart is called to finish the
648 	 * probe.  The reference will be dropped in cddone at the end of probe.
649 	 */
650 	(void)cam_periph_acquire(periph);
651 	cam_periph_unlock(periph);
652 	/*
653 	 * Load the user's default, if any.
654 	 */
655 	snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
656 		 periph->unit_number);
657 	TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
658 
659 	/* 6 and 10 are the only permissible values here. */
660 	if (softc->minimum_command_size < 6)
661 		softc->minimum_command_size = 6;
662 	else if (softc->minimum_command_size > 6)
663 		softc->minimum_command_size = 10;
664 
665 	/*
666 	 * We need to register the statistics structure for this device,
667 	 * but we don't have the blocksize yet for it.  So, we register
668 	 * the structure and indicate that we don't have the blocksize
669 	 * yet.  Unlike other SCSI peripheral drivers, we explicitly set
670 	 * the device type here to be CDROM, rather than just ORing in
671 	 * the device type.  This is because this driver can attach to either
672 	 * CDROM or WORM devices, and we want this peripheral driver to
673 	 * show up in the devstat list as a CD peripheral driver, not a
674 	 * WORM peripheral driver.  WORM drives will also have the WORM
675 	 * driver attached to them.
676 	 */
677 	softc->disk = disk_alloc();
678 	softc->disk->d_devstat = devstat_new_entry("cd",
679 			  periph->unit_number, 0,
680 			  DEVSTAT_BS_UNAVAILABLE,
681 			  DEVSTAT_TYPE_CDROM |
682 			  XPORT_DEVSTAT_TYPE(cpi.transport),
683 			  DEVSTAT_PRIORITY_CD);
684 	softc->disk->d_open = cdopen;
685 	softc->disk->d_close = cdclose;
686 	softc->disk->d_strategy = cdstrategy;
687 	softc->disk->d_gone = cddiskgonecb;
688 	softc->disk->d_ioctl = cdioctl;
689 	softc->disk->d_name = "cd";
690 	cam_strvis(softc->disk->d_descr, cgd->inq_data.vendor,
691 	    sizeof(cgd->inq_data.vendor), sizeof(softc->disk->d_descr));
692 	strlcat(softc->disk->d_descr, " ", sizeof(softc->disk->d_descr));
693 	cam_strvis(&softc->disk->d_descr[strlen(softc->disk->d_descr)],
694 	    cgd->inq_data.product, sizeof(cgd->inq_data.product),
695 	    sizeof(softc->disk->d_descr) - strlen(softc->disk->d_descr));
696 	softc->disk->d_unit = periph->unit_number;
697 	softc->disk->d_drv1 = periph;
698 	if (cpi.maxio == 0)
699 		softc->disk->d_maxsize = DFLTPHYS;	/* traditional default */
700 	else if (cpi.maxio > maxphys)
701 		softc->disk->d_maxsize = maxphys;	/* for safety */
702 	else
703 		softc->disk->d_maxsize = cpi.maxio;
704 	softc->disk->d_flags = 0;
705 	softc->disk->d_hba_vendor = cpi.hba_vendor;
706 	softc->disk->d_hba_device = cpi.hba_device;
707 	softc->disk->d_hba_subvendor = cpi.hba_subvendor;
708 	softc->disk->d_hba_subdevice = cpi.hba_subdevice;
709 	snprintf(softc->disk->d_attachment, sizeof(softc->disk->d_attachment),
710 	    "%s%d", cpi.dev_name, cpi.unit_number);
711 	cam_periph_lock(periph);
712 
713 	/*
714 	 * Add an async callback so that we get
715 	 * notified if this device goes away.
716 	 */
717 	xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE |
718 	    AC_SCSI_AEN | AC_UNIT_ATTENTION, cdasync, periph, periph->path);
719 
720 	/*
721 	 * Schedule a periodic media polling events.
722 	 */
723 	callout_init_mtx(&softc->mediapoll_c, cam_periph_mtx(periph), 0);
724 	if ((softc->flags & CD_FLAG_DISC_REMOVABLE) &&
725 	    (cgd->inq_flags & SID_AEN) == 0 &&
726 	    cd_poll_period != 0) {
727 		callout_reset_sbt(&softc->mediapoll_c, cd_poll_period * SBT_1S,
728 		    0, cdmediapoll, periph, C_PREL(1));
729 	}
730 
731 	/* Released after probe when disk_create() call pass it to GEOM. */
732 	cam_periph_hold_boot(periph);
733 
734 	xpt_schedule(periph, CAM_PRIORITY_DEV);
735 	return(CAM_REQ_CMP);
736 }
737 
738 static int
739 cdopen(struct disk *dp)
740 {
741 	struct cam_periph *periph;
742 	struct cd_softc *softc;
743 	int error;
744 
745 	periph = (struct cam_periph *)dp->d_drv1;
746 	softc = (struct cd_softc *)periph->softc;
747 
748 	if (cam_periph_acquire(periph) != 0)
749 		return(ENXIO);
750 
751 	cam_periph_lock(periph);
752 
753 	if (softc->flags & CD_FLAG_INVALID) {
754 		cam_periph_release_locked(periph);
755 		cam_periph_unlock(periph);
756 		return(ENXIO);
757 	}
758 
759 	if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
760 		cam_periph_release_locked(periph);
761 		cam_periph_unlock(periph);
762 		return (error);
763 	}
764 
765 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
766 	    ("cdopen\n"));
767 
768 	/*
769 	 * Check for media, and set the appropriate flags.  We don't bail
770 	 * if we don't have media, but then we don't allow anything but the
771 	 * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
772 	 */
773 	cdcheckmedia(periph, /*do_wait*/ true);
774 
775 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
776 	cam_periph_unhold(periph);
777 
778 	cam_periph_unlock(periph);
779 
780 	return (0);
781 }
782 
783 static int
784 cdclose(struct disk *dp)
785 {
786 	struct 	cam_periph *periph;
787 	struct	cd_softc *softc;
788 
789 	periph = (struct cam_periph *)dp->d_drv1;
790 	softc = (struct cd_softc *)periph->softc;
791 
792 	cam_periph_lock(periph);
793 	if (cam_periph_hold(periph, PRIBIO) != 0) {
794 		cam_periph_unlock(periph);
795 		cam_periph_release(periph);
796 		return (0);
797 	}
798 
799 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
800 	    ("cdclose\n"));
801 
802 	if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
803 		cdprevent(periph, PR_ALLOW);
804 
805 	/*
806 	 * Since we're closing this CD, mark the blocksize as unavailable.
807 	 * It will be marked as available when the CD is opened again.
808 	 */
809 	softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
810 
811 	/*
812 	 * We'll check the media and toc again at the next open().
813 	 */
814 	softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
815 
816 	cam_periph_unhold(periph);
817 	cam_periph_release_locked(periph);
818 	cam_periph_unlock(periph);
819 
820 	return (0);
821 }
822 
823 static int
824 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
825 					      uint32_t cam_flags,
826 					      uint32_t sense_flags),
827 	 uint32_t cam_flags, uint32_t sense_flags)
828 {
829 	struct cd_softc *softc;
830 	struct cam_periph *periph;
831 	int error;
832 
833 	periph = xpt_path_periph(ccb->ccb_h.path);
834 	softc = (struct cd_softc *)periph->softc;
835 
836 	error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
837 				  softc->disk->d_devstat);
838 
839 	return(error);
840 }
841 
842 /*
843  * Actually translate the requested transfer into one the physical driver
844  * can understand.  The transfer is described by a buf and will include
845  * only one physical transfer.
846  */
847 static void
848 cdstrategy(struct bio *bp)
849 {
850 	struct cam_periph *periph;
851 	struct cd_softc *softc;
852 
853 	periph = (struct cam_periph *)bp->bio_disk->d_drv1;
854 	cam_periph_lock(periph);
855 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
856 	    ("cdstrategy(%p)\n", bp));
857 
858 	softc = (struct cd_softc *)periph->softc;
859 
860 	/*
861 	 * If the device has been made invalid, error out
862 	 */
863 	if ((softc->flags & CD_FLAG_INVALID)) {
864 		cam_periph_unlock(periph);
865 		biofinish(bp, NULL, ENXIO);
866 		return;
867 	}
868 
869 	/*
870 	 * Place it in the queue of disk activities for this disk
871 	 */
872 	bioq_disksort(&softc->bio_queue, bp);
873 
874         /*
875 	 * If we don't know that we have valid media, schedule the media
876 	 * check first.  The I/O will get executed after the media check.
877 	 */
878 	if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
879 		cdcheckmedia(periph, /*do_wait*/ false);
880 	else
881 		xpt_schedule(periph, CAM_PRIORITY_NORMAL);
882 
883 	cam_periph_unlock(periph);
884 	return;
885 }
886 
887 static void
888 cdstart(struct cam_periph *periph, union ccb *start_ccb)
889 {
890 	struct cd_softc *softc;
891 	struct bio *bp;
892 	struct ccb_scsiio *csio;
893 
894 	cam_periph_assert(periph, MA_OWNED);
895 	softc = (struct cd_softc *)periph->softc;
896 
897 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
898 
899 	switch (softc->state) {
900 	case CD_STATE_NORMAL:
901 	{
902 		bp = bioq_first(&softc->bio_queue);
903 		if (bp == NULL) {
904 			if (softc->tur) {
905 				softc->tur = 0;
906 				csio = &start_ccb->csio;
907 				scsi_test_unit_ready(csio,
908 				     /*retries*/ cd_retry_count,
909 				     cddone,
910 				     MSG_SIMPLE_Q_TAG,
911 				     SSD_FULL_SIZE,
912 				     cd_timeout);
913 				start_ccb->ccb_h.ccb_bp = NULL;
914 				start_ccb->ccb_h.ccb_state = CD_CCB_TUR;
915 				xpt_action(start_ccb);
916 			} else
917 				xpt_release_ccb(start_ccb);
918 		} else {
919 			if (softc->tur) {
920 				softc->tur = 0;
921 				cam_periph_release_locked(periph);
922 			}
923 			bioq_remove(&softc->bio_queue, bp);
924 
925 			if ((bp->bio_cmd != BIO_READ) &&
926 			    (bp->bio_cmd != BIO_WRITE)) {
927 				biofinish(bp, NULL, EOPNOTSUPP);
928 				xpt_release_ccb(start_ccb);
929 				return;
930 			}
931 
932 			scsi_read_write(&start_ccb->csio,
933 					/*retries*/ cd_retry_count,
934 					/* cbfcnp */ cddone,
935 					MSG_SIMPLE_Q_TAG,
936 					/* read */bp->bio_cmd == BIO_READ ?
937 					SCSI_RW_READ : SCSI_RW_WRITE,
938 					/* byte2 */ 0,
939 					/* minimum_cmd_size */ 10,
940 					/* lba */ bp->bio_offset /
941 					  softc->params.blksize,
942 					bp->bio_bcount / softc->params.blksize,
943 					/* data_ptr */ bp->bio_data,
944 					/* dxfer_len */ bp->bio_bcount,
945 					/* sense_len */ cd_retry_count ?
946 					  SSD_FULL_SIZE : SF_NO_PRINT,
947 					/* timeout */ cd_timeout);
948 			/* Use READ CD command for audio tracks. */
949 			if (softc->params.blksize == 2352) {
950 				start_ccb->csio.cdb_io.cdb_bytes[0] = READ_CD;
951 				start_ccb->csio.cdb_io.cdb_bytes[9] = 0xf8;
952 				start_ccb->csio.cdb_io.cdb_bytes[10] = 0;
953 				start_ccb->csio.cdb_io.cdb_bytes[11] = 0;
954 				start_ccb->csio.cdb_len = 12;
955 			}
956 			start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
957 
958 			LIST_INSERT_HEAD(&softc->pending_ccbs,
959 					 &start_ccb->ccb_h, periph_links.le);
960 			softc->outstanding_cmds++;
961 
962 			/* We expect a unit attention from this device */
963 			if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
964 				start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
965 				softc->flags &= ~CD_FLAG_RETRY_UA;
966 			}
967 
968 			start_ccb->ccb_h.ccb_bp = bp;
969 			bp = bioq_first(&softc->bio_queue);
970 
971 			xpt_action(start_ccb);
972 		}
973 		if (bp != NULL || softc->tur) {
974 			/* Have more work to do, so ensure we stay scheduled */
975 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
976 		}
977 		break;
978 	}
979 	case CD_STATE_PROBE:
980 	case CD_STATE_MEDIA_SIZE:
981 	{
982 		struct scsi_read_capacity_data *rcap;
983 
984 		rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
985 		    M_SCSICD, M_NOWAIT | M_ZERO);
986 		if (rcap == NULL) {
987 			xpt_print(periph->path,
988 			    "%s: Couldn't malloc read_capacity data\n",
989 			    __func__);
990 			xpt_release_ccb(start_ccb);
991 			/*
992 			 * We can't probe because we can't allocate memory,
993 			 * so invalidate the peripheral.  The system probably
994 			 * has larger problems at this stage.  If we've
995 			 * already probed (and are re-probing capacity), we
996 			 * don't need to invalidate.
997 			 *
998 			 * XXX KDM need to reset probe state and kick out
999 			 * pending I/O.
1000 			 */
1001 			if (softc->state == CD_STATE_PROBE)
1002 				cam_periph_invalidate(periph);
1003 			break;
1004 		}
1005 
1006 		/*
1007 		 * Set the default capacity and sector size to something that
1008 		 * GEOM can handle.  This will get reset when a read capacity
1009 		 * completes successfully.
1010 		 */
1011 		softc->disk->d_sectorsize = 2048;
1012 		softc->disk->d_mediasize = 0;
1013 
1014 		csio = &start_ccb->csio;
1015 		scsi_read_capacity(csio,
1016 				   /*retries*/ cd_retry_count,
1017 				   cddone,
1018 				   MSG_SIMPLE_Q_TAG,
1019 				   rcap,
1020 				   SSD_FULL_SIZE,
1021 				   /*timeout*/20000);
1022 		start_ccb->ccb_h.ccb_bp = NULL;
1023 		if (softc->state == CD_STATE_PROBE)
1024 			start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1025 		else
1026 			start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_SIZE;
1027 		xpt_action(start_ccb);
1028 		break;
1029 	}
1030 	case CD_STATE_MEDIA_ALLOW:
1031 	case CD_STATE_MEDIA_PREVENT:
1032 	{
1033 		/*
1034 		 * If the CD is already locked, we don't need to do this.
1035 		 * Move on to the capacity check.
1036 		 */
1037 		if (softc->state == CD_STATE_MEDIA_PREVENT
1038 		 && (softc->flags & CD_FLAG_DISC_LOCKED) != 0) {
1039 			softc->state = CD_STATE_MEDIA_SIZE;
1040 			xpt_release_ccb(start_ccb);
1041 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1042 			break;
1043 		}
1044 
1045 		scsi_prevent(&start_ccb->csio,
1046 			     /*retries*/ cd_retry_count,
1047 			     /*cbfcnp*/ cddone,
1048 			     /*tag_action*/ MSG_SIMPLE_Q_TAG,
1049 			     /*action*/ (softc->state == CD_STATE_MEDIA_ALLOW) ?
1050 					PR_ALLOW : PR_PREVENT,
1051 			     /*sense_len*/ SSD_FULL_SIZE,
1052 			     /*timeout*/ 60000);
1053 
1054 		start_ccb->ccb_h.ccb_bp = NULL;
1055 		if (softc->state == CD_STATE_MEDIA_ALLOW)
1056 			start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_ALLOW;
1057 		else
1058 			start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_PREVENT;
1059 		xpt_action(start_ccb);
1060 		break;
1061 	}
1062 	case CD_STATE_MEDIA_TOC_HDR: {
1063 		struct ioc_toc_header *toch;
1064 
1065 		bzero(&softc->toc, sizeof(softc->toc));
1066 
1067 		toch = &softc->toc.header;
1068 
1069 		scsi_read_toc(&start_ccb->csio,
1070 			      /*retries*/ cd_retry_count,
1071 			      /*cbfcnp*/ cddone,
1072 			      /*tag_action*/ MSG_SIMPLE_Q_TAG,
1073 			      /*byte1_flags*/ 0,
1074 			      /*format*/ SRTOC_FORMAT_TOC,
1075 			      /*track*/ 0,
1076 			      /*data_ptr*/ (uint8_t *)toch,
1077 			      /*dxfer_len*/ sizeof(*toch),
1078 			      /*sense_len*/ SSD_FULL_SIZE,
1079 			      /*timeout*/ 50000);
1080 		start_ccb->ccb_h.ccb_bp = NULL;
1081 		start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_TOC_HDR;
1082 		xpt_action(start_ccb);
1083 		break;
1084 	}
1085 	case CD_STATE_MEDIA_TOC_FULL: {
1086 		bzero(&softc->toc, sizeof(softc->toc));
1087 
1088 		scsi_read_toc(&start_ccb->csio,
1089 			      /*retries*/ cd_retry_count,
1090 			      /*cbfcnp*/ cddone,
1091 			      /*tag_action*/ MSG_SIMPLE_Q_TAG,
1092 			      /*byte1_flags*/ 0,
1093 			      /*format*/ SRTOC_FORMAT_TOC,
1094 			      /*track*/ 0,
1095 			      /*data_ptr*/ (uint8_t *)&softc->toc,
1096 			      /*dxfer_len*/ softc->toc_read_len ?
1097 					    softc->toc_read_len :
1098 					    sizeof(softc->toc),
1099 			      /*sense_len*/ SSD_FULL_SIZE,
1100 			      /*timeout*/ 50000);
1101 		start_ccb->ccb_h.ccb_bp = NULL;
1102 		start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_TOC_FULL;
1103 		xpt_action(start_ccb);
1104 		break;
1105 	}
1106 	case CD_STATE_MEDIA_TOC_LEAD: {
1107 		struct cd_toc_single *leadout;
1108 
1109 		leadout = &softc->leadout;
1110 		bzero(leadout, sizeof(*leadout));
1111 
1112 		scsi_read_toc(&start_ccb->csio,
1113 			      /*retries*/ cd_retry_count,
1114 			      /*cbfcnp*/ cddone,
1115 			      /*tag_action*/ MSG_SIMPLE_Q_TAG,
1116 			      /*byte1_flags*/ CD_MSF,
1117 			      /*format*/ SRTOC_FORMAT_TOC,
1118 			      /*track*/ LEADOUT,
1119 			      /*data_ptr*/ (uint8_t *)leadout,
1120 			      /*dxfer_len*/ sizeof(*leadout),
1121 			      /*sense_len*/ SSD_FULL_SIZE,
1122 			      /*timeout*/ 50000);
1123 		start_ccb->ccb_h.ccb_bp = NULL;
1124 		start_ccb->ccb_h.ccb_state = CD_CCB_MEDIA_TOC_LEAD;
1125 		xpt_action(start_ccb);
1126 		break;
1127 	}
1128 	}
1129 }
1130 
1131 static void
1132 cddone(struct cam_periph *periph, union ccb *done_ccb)
1133 {
1134 	struct cd_softc *softc;
1135 	struct ccb_scsiio *csio;
1136 
1137 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1138 
1139 	cam_periph_assert(periph, MA_OWNED);
1140 	softc = (struct cd_softc *)periph->softc;
1141 	csio = &done_ccb->csio;
1142 
1143 	switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1144 	case CD_CCB_BUFFER_IO:
1145 	{
1146 		struct bio	*bp;
1147 		int		error;
1148 
1149 		bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1150 		error = 0;
1151 
1152 		if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1153 			int sf;
1154 
1155 			if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1156 				sf = SF_RETRY_UA;
1157 			else
1158 				sf = 0;
1159 
1160 			error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1161 			if (error == ERESTART) {
1162 				/*
1163 				 * A retry was scheuled, so
1164 				 * just return.
1165 				 */
1166 				return;
1167 			}
1168 		}
1169 
1170 		if (error != 0) {
1171 			xpt_print(periph->path,
1172 			    "cddone: got error %#x back\n", error);
1173 			bioq_flush(&softc->bio_queue, NULL, EIO);
1174 			bp->bio_resid = bp->bio_bcount;
1175 			bp->bio_error = error;
1176 			bp->bio_flags |= BIO_ERROR;
1177 			if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1178 				cam_release_devq(done_ccb->ccb_h.path,
1179 					 /*relsim_flags*/0,
1180 					 /*reduction*/0,
1181 					 /*timeout*/0,
1182 					 /*getcount_only*/0);
1183 
1184 		} else {
1185 			bp->bio_resid = csio->resid;
1186 			bp->bio_error = 0;
1187 			if (bp->bio_resid != 0) {
1188 				/*
1189 				 * Short transfer ???
1190 				 * XXX: not sure this is correct for partial
1191 				 * transfers at EOM
1192 				 */
1193 				bp->bio_flags |= BIO_ERROR;
1194 			}
1195 		}
1196 
1197 		LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1198 		softc->outstanding_cmds--;
1199 
1200 		biofinish(bp, NULL, 0);
1201 		break;
1202 	}
1203 	case CD_CCB_PROBE:
1204 	{
1205 		struct	   scsi_read_capacity_data *rdcap;
1206 		char	   *announce_buf;
1207 		struct	   cd_params *cdp;
1208 		int error;
1209 
1210 		cdp = &softc->params;
1211 		announce_buf = softc->announce_temp;
1212 		bzero(announce_buf, CD_ANNOUNCETMP_SZ);
1213 
1214 		rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1215 
1216 		cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1217 		cdp->blksize = scsi_4btoul (rdcap->length);
1218 
1219 		/*
1220 		 * Retry any UNIT ATTENTION type errors.  They
1221 		 * are expected at boot.
1222 		 */
1223 		if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP ||
1224 		    (error = cderror(done_ccb, CAM_RETRY_SELTO,
1225 				SF_RETRY_UA | SF_NO_PRINT)) == 0) {
1226 			snprintf(announce_buf, CD_ANNOUNCETMP_SZ,
1227 			    "%juMB (%ju %u byte sectors)",
1228 			    ((uintmax_t)cdp->disksize * cdp->blksize) /
1229 			     (1024 * 1024),
1230 			    (uintmax_t)cdp->disksize, cdp->blksize);
1231 		} else {
1232 			if (error == ERESTART) {
1233 				/*
1234 				 * A retry was scheuled, so
1235 				 * just return.
1236 				 */
1237 				return;
1238 			} else {
1239 				int asc, ascq;
1240 				int sense_key, error_code;
1241 				int have_sense;
1242 				cam_status status;
1243 				struct ccb_getdev cgd;
1244 
1245 				/* Don't wedge this device's queue */
1246 				if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1247 					cam_release_devq(done_ccb->ccb_h.path,
1248 						 /*relsim_flags*/0,
1249 						 /*reduction*/0,
1250 						 /*timeout*/0,
1251 						 /*getcount_only*/0);
1252 
1253 				status = done_ccb->ccb_h.status;
1254 
1255 				bzero(&cgd, sizeof(cgd));
1256 				xpt_setup_ccb(&cgd.ccb_h,
1257 					      done_ccb->ccb_h.path,
1258 					      CAM_PRIORITY_NORMAL);
1259 				cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1260 				xpt_action((union ccb *)&cgd);
1261 
1262 				if (scsi_extract_sense_ccb(done_ccb,
1263 				    &error_code, &sense_key, &asc, &ascq))
1264 					have_sense = TRUE;
1265 				else
1266 					have_sense = FALSE;
1267 
1268 				/*
1269 				 * Attach to anything that claims to be a
1270 				 * CDROM or WORM device, as long as it
1271 				 * doesn't return a "Logical unit not
1272 				 * supported" (0x25) error.
1273 				 */
1274 				if ((have_sense) && (asc != 0x25)
1275 				 && (error_code == SSD_CURRENT_ERROR
1276 				  || error_code == SSD_DESC_CURRENT_ERROR)) {
1277 					const char *sense_key_desc;
1278 					const char *asc_desc;
1279 
1280 					scsi_sense_desc(sense_key, asc, ascq,
1281 							&cgd.inq_data,
1282 							&sense_key_desc,
1283 							&asc_desc);
1284 					snprintf(announce_buf,
1285 					    CD_ANNOUNCETMP_SZ,
1286 						"Attempt to query device "
1287 						"size failed: %s, %s",
1288 						sense_key_desc,
1289 						asc_desc);
1290 				} else if ((have_sense == 0)
1291 				      && ((status & CAM_STATUS_MASK) ==
1292 					   CAM_SCSI_STATUS_ERROR)
1293 				      && (csio->scsi_status ==
1294 					  SCSI_STATUS_BUSY)) {
1295 					snprintf(announce_buf,
1296 					    CD_ANNOUNCETMP_SZ,
1297 					    "Attempt to query device "
1298 					    "size failed: SCSI Status: %s",
1299 					    scsi_status_string(csio));
1300 				} else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1301 					/*
1302 					 * We only print out an error for
1303 					 * CDROM type devices.  For WORM
1304 					 * devices, we don't print out an
1305 					 * error since a few WORM devices
1306 					 * don't support CDROM commands.
1307 					 * If we have sense information, go
1308 					 * ahead and print it out.
1309 					 * Otherwise, just say that we
1310 					 * couldn't attach.
1311 					 */
1312 
1313 					/*
1314 					 * Just print out the error, not
1315 					 * the full probe message, when we
1316 					 * don't attach.
1317 					 */
1318 					if (have_sense)
1319 						scsi_sense_print(
1320 							&done_ccb->csio);
1321 					else {
1322 						xpt_print(periph->path,
1323 						    "got CAM status %#x\n",
1324 						    done_ccb->ccb_h.status);
1325 					}
1326 					xpt_print(periph->path, "fatal error, "
1327 					    "failed to attach to device\n");
1328 					/*
1329 					 * Invalidate this peripheral.
1330 					 */
1331 					cam_periph_invalidate(periph);
1332 
1333 					announce_buf = NULL;
1334 				} else {
1335 					/*
1336 					 * Invalidate this peripheral.
1337 					 */
1338 					cam_periph_invalidate(periph);
1339 					announce_buf = NULL;
1340 				}
1341 			}
1342 		}
1343 		free(rdcap, M_SCSICD);
1344 		if (announce_buf != NULL) {
1345 			struct sbuf sb;
1346 
1347 			sbuf_new(&sb, softc->announce_buf, CD_ANNOUNCE_SZ,
1348 			    SBUF_FIXEDLEN);
1349 			xpt_announce_periph_sbuf(periph, &sb, announce_buf);
1350 			xpt_announce_quirks_sbuf(periph, &sb, softc->quirks,
1351 			    CD_Q_BIT_STRING);
1352 			sbuf_finish(&sb);
1353 			sbuf_putbuf(&sb);
1354 
1355 			/*
1356 			 * Create our sysctl variables, now that we know
1357 			 * we have successfully attached.
1358 			 */
1359 			taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1360 		}
1361 		softc->state = CD_STATE_NORMAL;
1362 		/*
1363 		 * Since our peripheral may be invalidated by an error
1364 		 * above or an external event, we must release our CCB
1365 		 * before releasing the probe lock on the peripheral.
1366 		 * The peripheral will only go away once the last lock
1367 		 * is removed, and we need it around for the CCB release
1368 		 * operation.
1369 		 */
1370 		xpt_release_ccb(done_ccb);
1371 
1372 		/*
1373 		 * We'll release this reference once GEOM calls us back via
1374 		 * cddiskgonecb(), telling us that our provider has been freed.
1375 		 */
1376 		if (cam_periph_acquire(periph) == 0)
1377 			disk_create(softc->disk, DISK_VERSION);
1378 
1379 		cam_periph_release_boot(periph);
1380 		cam_periph_release_locked(periph);
1381 		return;
1382 	}
1383 	case CD_CCB_TUR:
1384 	{
1385 		if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1386 			if (cderror(done_ccb, CAM_RETRY_SELTO,
1387 			    SF_RETRY_UA | SF_NO_RECOVERY | SF_NO_PRINT) ==
1388 			    ERESTART)
1389 				return;
1390 			if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1391 				cam_release_devq(done_ccb->ccb_h.path,
1392 						 /*relsim_flags*/0,
1393 						 /*reduction*/0,
1394 						 /*timeout*/0,
1395 						 /*getcount_only*/0);
1396 		}
1397 		xpt_release_ccb(done_ccb);
1398 		cam_periph_release_locked(periph);
1399 		return;
1400 	}
1401 	case CD_CCB_MEDIA_ALLOW:
1402 	case CD_CCB_MEDIA_PREVENT:
1403 	{
1404 		int error;
1405 		int is_prevent;
1406 
1407 		error = 0;
1408 
1409 		if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1410 			error = cderror(done_ccb, CAM_RETRY_SELTO,
1411 			    SF_RETRY_UA | SF_NO_PRINT);
1412 		}
1413 		if (error == ERESTART)
1414 			return;
1415 		if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1416 			cam_release_devq(done_ccb->ccb_h.path,
1417 					 /*relsim_flags*/0,
1418 					 /*reduction*/0,
1419 					 /*timeout*/0,
1420 					 /*getcount_only*/0);
1421 
1422 		/*
1423 		 * Note that just like the original cdcheckmedia(), we do
1424 		 * a prevent without failing the whole operation if the
1425 		 * prevent fails.  We try, but keep going if it doesn't
1426 		 * work.
1427 		 */
1428 
1429 		if ((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
1430 		     CD_CCB_MEDIA_PREVENT)
1431 			is_prevent = 1;
1432 		else
1433 			is_prevent = 0;
1434 
1435 		xpt_release_ccb(done_ccb);
1436 
1437 		if (is_prevent != 0) {
1438 			if (error == 0)
1439 				softc->flags |= CD_FLAG_DISC_LOCKED;
1440 			else
1441 				softc->flags &= ~CD_FLAG_DISC_LOCKED;
1442 			softc->state = CD_STATE_MEDIA_SIZE;
1443 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1444 		} else {
1445 			if (error == 0)
1446 				softc->flags &= ~CD_FLAG_DISC_LOCKED;
1447 			softc->state = CD_STATE_NORMAL;
1448 			if (bioq_first(&softc->bio_queue) != NULL)
1449 				xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1450 		}
1451 		return;
1452 	}
1453 	case CD_CCB_MEDIA_SIZE:
1454 	{
1455 		struct scsi_read_capacity_data *rdcap;
1456 		int error;
1457 
1458 		error = 0;
1459 		if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1460 			error = cderror(done_ccb, CAM_RETRY_SELTO,
1461 			    SF_RETRY_UA | SF_NO_PRINT);
1462 		}
1463 		if (error == ERESTART)
1464 			return;
1465 		if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1466 			cam_release_devq(done_ccb->ccb_h.path,
1467 					 /*relsim_flags*/0,
1468 					 /*reduction*/0,
1469 					 /*timeout*/0,
1470 					 /*getcount_only*/0);
1471 		rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1472 
1473 		if (error == 0) {
1474 			softc->params.disksize =scsi_4btoul(rdcap->addr) + 1;
1475 			softc->params.blksize  = scsi_4btoul(rdcap->length);
1476 
1477 			/* Make sure we got at least some block size. */
1478 			if (softc->params.blksize == 0)
1479 				error = EIO;
1480 			/*
1481 			 * SCSI-3 mandates that the reported blocksize shall be
1482 			 * 2048.  Older drives sometimes report funny values,
1483 			 * trim it down to 2048, or other parts of the kernel
1484 			 * will get confused.
1485 			 *
1486 			 * XXX we leave drives alone that might report 512
1487 			 * bytes, as well as drives reporting more weird
1488 			 * sizes like perhaps 4K.
1489 			 */
1490 			if (softc->params.blksize > 2048
1491 			 && softc->params.blksize <= 2352)
1492 				softc->params.blksize = 2048;
1493 		}
1494 		free(rdcap, M_SCSICD);
1495 
1496 		if (error == 0) {
1497 			softc->disk->d_sectorsize = softc->params.blksize;
1498 			softc->disk->d_mediasize =
1499 			    (off_t)softc->params.blksize *
1500 			    softc->params.disksize;
1501 			softc->flags |= CD_FLAG_SAW_MEDIA | CD_FLAG_VALID_MEDIA;
1502 			softc->state = CD_STATE_MEDIA_TOC_HDR;
1503 		} else {
1504 			softc->flags &= ~(CD_FLAG_VALID_MEDIA |
1505 					  CD_FLAG_VALID_TOC);
1506 			bioq_flush(&softc->bio_queue, NULL, EINVAL);
1507 			softc->state = CD_STATE_MEDIA_ALLOW;
1508 			cdmediaprobedone(periph);
1509 		}
1510 		xpt_release_ccb(done_ccb);
1511 		xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1512 		return;
1513 	}
1514 	case CD_CCB_MEDIA_TOC_HDR:
1515 	case CD_CCB_MEDIA_TOC_FULL:
1516 	case CD_CCB_MEDIA_TOC_LEAD:
1517 	{
1518 		int error;
1519 		struct ioc_toc_header *toch;
1520 		int num_entries;
1521 		int cdindex;
1522 
1523 		error = 0;
1524 
1525 		if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1526 			error = cderror(done_ccb, CAM_RETRY_SELTO,
1527 			    SF_RETRY_UA | SF_NO_PRINT);
1528 		}
1529 		if (error == ERESTART)
1530 			return;
1531 
1532 		if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1533 			cam_release_devq(done_ccb->ccb_h.path,
1534 					 /*relsim_flags*/0,
1535 					 /*reduction*/0,
1536 					 /*timeout*/0,
1537 					 /*getcount_only*/0);
1538 
1539 		/*
1540 		 * We will get errors here for media that doesn't have a table
1541 		 * of contents.  According to the MMC-3 spec: "When a Read
1542 		 * TOC/PMA/ATIP command is presented for a DDCD/CD-R/RW media,
1543 		 * where the first TOC has not been recorded (no complete
1544 		 * session) and the Format codes 0000b, 0001b, or 0010b are
1545 		 * specified, this command shall be rejected with an INVALID
1546 		 * FIELD IN CDB.  Devices that are not capable of reading an
1547 		 * incomplete session on DDC/CD-R/RW media shall report
1548 		 * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
1549 		 *
1550 		 * So this isn't fatal if we can't read the table of contents,
1551 		 * it just means that the user won't be able to issue the
1552 		 * play tracks ioctl, and likely lots of other stuff won't
1553 		 * work either.  They need to burn the CD before we can do
1554 		 * a whole lot with it.  So we don't print anything here if
1555 		 * we get an error back.
1556 		 *
1557 		 * We also bail out if the drive doesn't at least give us
1558 		 * the full TOC header.
1559 		 */
1560 		if ((error != 0)
1561 		 || ((csio->dxfer_len - csio->resid) <
1562 		      sizeof(struct ioc_toc_header))) {
1563 			softc->flags &= ~CD_FLAG_VALID_TOC;
1564 			bzero(&softc->toc, sizeof(softc->toc));
1565 			/*
1566 			 * Failing the TOC read is not an error.
1567 			 */
1568 			softc->state = CD_STATE_NORMAL;
1569 			xpt_release_ccb(done_ccb);
1570 
1571 			cdmediaprobedone(periph);
1572 
1573 			/*
1574 			 * Go ahead and schedule I/O execution if there is
1575 			 * anything in the queue.  It'll probably get
1576 			 * kicked out with an error.
1577 			 */
1578 			if (bioq_first(&softc->bio_queue) != NULL)
1579 				xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1580 			return;
1581 		}
1582 
1583 		/*
1584 		 * Note that this is NOT the storage location used for the
1585 		 * leadout!
1586 		 */
1587 		toch = &softc->toc.header;
1588 
1589 		if (softc->quirks & CD_Q_BCD_TRACKS) {
1590 			toch->starting_track = bcd2bin(toch->starting_track);
1591 			toch->ending_track = bcd2bin(toch->ending_track);
1592 		}
1593 
1594 		/* Number of TOC entries, plus leadout */
1595 		num_entries = toch->ending_track - toch->starting_track + 2;
1596 		cdindex = toch->starting_track + num_entries - 1;
1597 
1598 		if ((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
1599 		     CD_CCB_MEDIA_TOC_HDR) {
1600 			if (num_entries <= 0 ||
1601 			    num_entries > nitems(softc->toc.entries)) {
1602 				softc->flags &= ~CD_FLAG_VALID_TOC;
1603 				bzero(&softc->toc, sizeof(softc->toc));
1604 				/*
1605 				 * Failing the TOC read is not an error.
1606 				 */
1607 				softc->state = CD_STATE_NORMAL;
1608 				xpt_release_ccb(done_ccb);
1609 
1610 				cdmediaprobedone(periph);
1611 
1612 				/*
1613 				 * Go ahead and schedule I/O execution if
1614 				 * there is anything in the queue.  It'll
1615 				 * probably get kicked out with an error.
1616 				 */
1617 				if (bioq_first(&softc->bio_queue) != NULL)
1618 					xpt_schedule(periph,
1619 					    CAM_PRIORITY_NORMAL);
1620 			} else {
1621 				softc->toc_read_len = num_entries *
1622 				    sizeof(struct cd_toc_entry);
1623 				softc->toc_read_len += sizeof(*toch);
1624 
1625 				softc->state = CD_STATE_MEDIA_TOC_FULL;
1626 				xpt_release_ccb(done_ccb);
1627 				xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1628 			}
1629 
1630 			return;
1631 		} else if ((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
1632 			    CD_CCB_MEDIA_TOC_LEAD) {
1633 			struct cd_toc_single *leadout;
1634 
1635 			leadout = (struct cd_toc_single *)csio->data_ptr;
1636 			softc->toc.entries[cdindex - toch->starting_track] =
1637 			    leadout->entry;
1638 		} else if (((done_ccb->ccb_h.ccb_state & CD_CCB_TYPE_MASK) ==
1639 			    CD_CCB_MEDIA_TOC_FULL)
1640 			&& (cdindex == toch->ending_track + 1)) {
1641 			/*
1642 			 * XXX KDM is this necessary?  Probably only if the
1643 			 * drive doesn't return leadout information with the
1644 			 * table of contents.
1645 			 */
1646 			softc->state = CD_STATE_MEDIA_TOC_LEAD;
1647 			xpt_release_ccb(done_ccb);
1648 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1649 			return;
1650 		}
1651 
1652 		if (softc->quirks & CD_Q_BCD_TRACKS) {
1653 			for (cdindex = 0; cdindex < num_entries - 1; cdindex++){
1654 				softc->toc.entries[cdindex].track =
1655 				    bcd2bin(softc->toc.entries[cdindex].track);
1656 			}
1657 		}
1658 
1659 		softc->flags |= CD_FLAG_VALID_TOC;
1660 		/* If the first track is audio, correct sector size. */
1661 		if ((softc->toc.entries[0].control & 4) == 0) {
1662 			softc->disk->d_sectorsize =softc->params.blksize = 2352;
1663 			softc->disk->d_mediasize =
1664 			    (off_t)softc->params.blksize *
1665 			    softc->params.disksize;
1666 		}
1667 		softc->state = CD_STATE_NORMAL;
1668 
1669 		/*
1670 		 * We unconditionally (re)set the blocksize each time the
1671 		 * CD device is opened.  This is because the CD can change,
1672 		 * and therefore the blocksize might change.
1673 		 * XXX problems here if some slice or partition is still
1674 		 * open with the old size?
1675 		 */
1676 		if ((softc->disk->d_devstat->flags & DEVSTAT_BS_UNAVAILABLE)!=0)
1677 			softc->disk->d_devstat->flags &=
1678 			    ~DEVSTAT_BS_UNAVAILABLE;
1679 		softc->disk->d_devstat->block_size = softc->params.blksize;
1680 
1681 		xpt_release_ccb(done_ccb);
1682 
1683 		cdmediaprobedone(periph);
1684 
1685 		if (bioq_first(&softc->bio_queue) != NULL)
1686 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1687 		return;
1688 	}
1689 	default:
1690 		break;
1691 	}
1692 	xpt_release_ccb(done_ccb);
1693 }
1694 
1695 static union cd_pages *
1696 cdgetpage(struct cd_mode_params *mode_params)
1697 {
1698 	union cd_pages *page;
1699 
1700 	if (mode_params->cdb_size == 10)
1701 		page = (union cd_pages *)find_mode_page_10(
1702 			(struct scsi_mode_header_10 *)mode_params->mode_buf);
1703 	else
1704 		page = (union cd_pages *)find_mode_page_6(
1705 			(struct scsi_mode_header_6 *)mode_params->mode_buf);
1706 
1707 	return (page);
1708 }
1709 
1710 static int
1711 cdgetpagesize(int page_num)
1712 {
1713 	u_int i;
1714 
1715 	for (i = 0; i < nitems(cd_page_size_table); i++) {
1716 		if (cd_page_size_table[i].page == page_num)
1717 			return (cd_page_size_table[i].page_size);
1718 	}
1719 
1720 	return (-1);
1721 }
1722 
1723 static struct cd_toc_entry *
1724 te_data_get_ptr(void *irtep, u_long cmd)
1725 {
1726 	union {
1727 		struct ioc_read_toc_entry irte;
1728 #ifdef COMPAT_FREEBSD32
1729 		struct ioc_read_toc_entry32 irte32;
1730 #endif
1731 	} *irteup;
1732 
1733 	irteup = irtep;
1734 	switch (IOCPARM_LEN(cmd)) {
1735 	case sizeof(irteup->irte):
1736 		return (irteup->irte.data);
1737 #ifdef COMPAT_FREEBSD32
1738 	case sizeof(irteup->irte32):
1739 		return ((struct cd_toc_entry *)(uintptr_t)irteup->irte32.data);
1740 #endif
1741 	default:
1742 		panic("Unhandled ioctl command %ld", cmd);
1743 	}
1744 }
1745 
1746 static int
1747 cdioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
1748 {
1749 
1750 	struct 	cam_periph *periph;
1751 	struct	cd_softc *softc;
1752 	int	error = 0;
1753 
1754 	periph = (struct cam_periph *)dp->d_drv1;
1755 	cam_periph_lock(periph);
1756 
1757 	softc = (struct cd_softc *)periph->softc;
1758 
1759 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1760 	    ("cdioctl(%#lx)\n", cmd));
1761 
1762 	if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
1763 		cam_periph_unlock(periph);
1764 		cam_periph_release(periph);
1765 		return (error);
1766 	}
1767 
1768 	/*
1769 	 * If we don't have media loaded, check for it.  If still don't
1770 	 * have media loaded, we can only do a load or eject.
1771 	 *
1772 	 * We only care whether media is loaded if this is a cd-specific ioctl
1773 	 * (thus the IOCGROUP check below).  Note that this will break if
1774 	 * anyone adds any ioctls into the switch statement below that don't
1775 	 * have their ioctl group set to 'c'.
1776 	 */
1777 	if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1778 	 && ((cmd != CDIOCCLOSE)
1779 	  && (cmd != CDIOCEJECT))
1780 	 && (IOCGROUP(cmd) == 'c')) {
1781 		error = cdcheckmedia(periph, /*do_wait*/ true);
1782 		if (error != 0) {
1783 			cam_periph_unhold(periph);
1784 			cam_periph_unlock(periph);
1785 			return (error);
1786 		}
1787 	}
1788 	/*
1789 	 * Drop the lock here so later mallocs can use WAITOK.  The periph
1790 	 * is essentially locked still with the cam_periph_hold call above.
1791 	 */
1792 	cam_periph_unlock(periph);
1793 
1794 	switch (cmd) {
1795 	case CDIOCPLAYTRACKS:
1796 		{
1797 			struct ioc_play_track *args
1798 			    = (struct ioc_play_track *) addr;
1799 			struct cd_mode_params params;
1800 			union cd_pages *page;
1801 
1802 			params.alloc_len = sizeof(union cd_mode_data_6_10);
1803 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
1804 						 M_WAITOK | M_ZERO);
1805 
1806 			cam_periph_lock(periph);
1807 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1808 				  ("trying to do CDIOCPLAYTRACKS\n"));
1809 
1810 			error = cdgetmode(periph, &params, AUDIO_PAGE);
1811 			if (error) {
1812 				free(params.mode_buf, M_SCSICD);
1813 				cam_periph_unlock(periph);
1814 				break;
1815 			}
1816 			page = cdgetpage(&params);
1817 
1818 			page->audio.flags &= ~CD_PA_SOTC;
1819 			page->audio.flags |= CD_PA_IMMED;
1820 			error = cdsetmode(periph, &params);
1821 			free(params.mode_buf, M_SCSICD);
1822 			if (error) {
1823 				cam_periph_unlock(periph);
1824 				break;
1825 			}
1826 
1827 			/*
1828 			 * This was originally implemented with the PLAY
1829 			 * AUDIO TRACK INDEX command, but that command was
1830 			 * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1831 			 * drives support it but ATAPI and ATAPI-derivative
1832 			 * drives don't seem to support it.  So we keep a
1833 			 * cache of the table of contents and translate
1834 			 * track numbers to MSF format.
1835 			 */
1836 			if (softc->flags & CD_FLAG_VALID_TOC) {
1837 				union msf_lba *sentry, *eentry;
1838 				struct ioc_toc_header *th;
1839 				int st, et;
1840 
1841 				th = &softc->toc.header;
1842 				if (args->end_track < th->ending_track + 1)
1843 					args->end_track++;
1844 				if (args->end_track > th->ending_track + 1)
1845 					args->end_track = th->ending_track + 1;
1846 				st = args->start_track - th->starting_track;
1847 				et = args->end_track - th->starting_track;
1848 				if (st < 0 || et < 0 ||
1849 				    st > th->ending_track - th->starting_track ||
1850 				    et > th->ending_track - th->starting_track) {
1851 					error = EINVAL;
1852 					cam_periph_unlock(periph);
1853 					break;
1854 				}
1855 				sentry = &softc->toc.entries[st].addr;
1856 				eentry = &softc->toc.entries[et].addr;
1857 				error = cdplaymsf(periph,
1858 						  sentry->msf.minute,
1859 						  sentry->msf.second,
1860 						  sentry->msf.frame,
1861 						  eentry->msf.minute,
1862 						  eentry->msf.second,
1863 						  eentry->msf.frame);
1864 			} else {
1865 				/*
1866 				 * If we don't have a valid TOC, try the
1867 				 * play track index command.  It is part of
1868 				 * the SCSI-2 spec, but was removed in the
1869 				 * MMC specs.  ATAPI and ATAPI-derived
1870 				 * drives don't support it.
1871 				 */
1872 				if (softc->quirks & CD_Q_BCD_TRACKS) {
1873 					args->start_track =
1874 						bin2bcd(args->start_track);
1875 					args->end_track =
1876 						bin2bcd(args->end_track);
1877 				}
1878 				error = cdplaytracks(periph,
1879 						     args->start_track,
1880 						     args->start_index,
1881 						     args->end_track,
1882 						     args->end_index);
1883 			}
1884 			cam_periph_unlock(periph);
1885 		}
1886 		break;
1887 	case CDIOCPLAYMSF:
1888 		{
1889 			struct ioc_play_msf *args
1890 				= (struct ioc_play_msf *) addr;
1891 			struct cd_mode_params params;
1892 			union cd_pages *page;
1893 
1894 			params.alloc_len = sizeof(union cd_mode_data_6_10);
1895 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
1896 						 M_WAITOK | M_ZERO);
1897 
1898 			cam_periph_lock(periph);
1899 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1900 				  ("trying to do CDIOCPLAYMSF\n"));
1901 
1902 			error = cdgetmode(periph, &params, AUDIO_PAGE);
1903 			if (error) {
1904 				free(params.mode_buf, M_SCSICD);
1905 				cam_periph_unlock(periph);
1906 				break;
1907 			}
1908 			page = cdgetpage(&params);
1909 
1910 			page->audio.flags &= ~CD_PA_SOTC;
1911 			page->audio.flags |= CD_PA_IMMED;
1912 			error = cdsetmode(periph, &params);
1913 			free(params.mode_buf, M_SCSICD);
1914 			if (error) {
1915 				cam_periph_unlock(periph);
1916 				break;
1917 			}
1918 			error = cdplaymsf(periph,
1919 					  args->start_m,
1920 					  args->start_s,
1921 					  args->start_f,
1922 					  args->end_m,
1923 					  args->end_s,
1924 					  args->end_f);
1925 			cam_periph_unlock(periph);
1926 		}
1927 		break;
1928 	case CDIOCPLAYBLOCKS:
1929 		{
1930 			struct ioc_play_blocks *args
1931 				= (struct ioc_play_blocks *) addr;
1932 			struct cd_mode_params params;
1933 			union cd_pages *page;
1934 
1935 			params.alloc_len = sizeof(union cd_mode_data_6_10);
1936 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
1937 						 M_WAITOK | M_ZERO);
1938 
1939 			cam_periph_lock(periph);
1940 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1941 				  ("trying to do CDIOCPLAYBLOCKS\n"));
1942 
1943 			error = cdgetmode(periph, &params, AUDIO_PAGE);
1944 			if (error) {
1945 				free(params.mode_buf, M_SCSICD);
1946 				cam_periph_unlock(periph);
1947 				break;
1948 			}
1949 			page = cdgetpage(&params);
1950 
1951 			page->audio.flags &= ~CD_PA_SOTC;
1952 			page->audio.flags |= CD_PA_IMMED;
1953 			error = cdsetmode(periph, &params);
1954 			free(params.mode_buf, M_SCSICD);
1955 			if (error) {
1956 				cam_periph_unlock(periph);
1957 				break;
1958 			}
1959 			error = cdplay(periph, args->blk, args->len);
1960 			cam_periph_unlock(periph);
1961 		}
1962 		break;
1963 	case CDIOCREADSUBCHANNEL:
1964 		{
1965 			struct ioc_read_subchannel *args
1966 				= (struct ioc_read_subchannel *) addr;
1967 			struct cd_sub_channel_info *data;
1968 			uint32_t len = args->data_len;
1969 
1970 			data = malloc(sizeof(struct cd_sub_channel_info),
1971 				      M_SCSICD, M_WAITOK | M_ZERO);
1972 
1973 			cam_periph_lock(periph);
1974 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1975 				  ("trying to do CDIOCREADSUBCHANNEL\n"));
1976 
1977 			if ((len > sizeof(struct cd_sub_channel_info)) ||
1978 			    (len < sizeof(struct cd_sub_channel_header))) {
1979 				printf(
1980 					"scsi_cd: cdioctl: "
1981 					"cdioreadsubchannel: error, len=%d\n",
1982 					len);
1983 				error = EINVAL;
1984 				free(data, M_SCSICD);
1985 				cam_periph_unlock(periph);
1986 				break;
1987 			}
1988 
1989 			if (softc->quirks & CD_Q_BCD_TRACKS)
1990 				args->track = bin2bcd(args->track);
1991 
1992 			error = cdreadsubchannel(periph, args->address_format,
1993 				args->data_format, args->track, data, len);
1994 
1995 			if (error) {
1996 				free(data, M_SCSICD);
1997 				cam_periph_unlock(periph);
1998 				break;
1999 			}
2000 			if (softc->quirks & CD_Q_BCD_TRACKS)
2001 				data->what.track_info.track_number =
2002 				    bcd2bin(data->what.track_info.track_number);
2003 			len = min(len, ((data->header.data_len[0] << 8) +
2004 				data->header.data_len[1] +
2005 				sizeof(struct cd_sub_channel_header)));
2006 			cam_periph_unlock(periph);
2007 			error = copyout(data, args->data, len);
2008 			free(data, M_SCSICD);
2009 		}
2010 		break;
2011 
2012 	case CDIOREADTOCHEADER:
2013 		{
2014 			struct ioc_toc_header *th;
2015 
2016 			th = malloc(sizeof(struct ioc_toc_header), M_SCSICD,
2017 				    M_WAITOK | M_ZERO);
2018 
2019 			cam_periph_lock(periph);
2020 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2021 				  ("trying to do CDIOREADTOCHEADER\n"));
2022 
2023 			error = cdreadtoc(periph, 0, 0, (uint8_t *)th,
2024 				          sizeof (*th), /*sense_flags*/SF_NO_PRINT);
2025 			if (error) {
2026 				free(th, M_SCSICD);
2027 				cam_periph_unlock(periph);
2028 				break;
2029 			}
2030 			if (softc->quirks & CD_Q_BCD_TRACKS) {
2031 				/* we are going to have to convert the BCD
2032 				 * encoding on the cd to what is expected
2033 				 */
2034 				th->starting_track =
2035 					bcd2bin(th->starting_track);
2036 				th->ending_track = bcd2bin(th->ending_track);
2037 			}
2038 			th->len = ntohs(th->len);
2039 			bcopy(th, addr, sizeof(*th));
2040 			free(th, M_SCSICD);
2041 			cam_periph_unlock(periph);
2042 		}
2043 		break;
2044 	case CDIOREADTOCENTRYS:
2045 #ifdef COMPAT_FREEBSD32
2046 	case CDIOREADTOCENTRYS_32:
2047 #endif
2048 		{
2049 			struct cd_tocdata *data;
2050 			struct cd_toc_single *lead;
2051 			struct ioc_read_toc_entry *te =
2052 				(struct ioc_read_toc_entry *) addr;
2053 			struct ioc_toc_header *th;
2054 			uint32_t len, readlen, idx, num;
2055 			uint32_t starting_track = te->starting_track;
2056 
2057 			data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2058 			lead = malloc(sizeof(*lead), M_SCSICD, M_WAITOK | M_ZERO);
2059 
2060 			cam_periph_lock(periph);
2061 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2062 				  ("trying to do CDIOREADTOCENTRYS\n"));
2063 
2064 			if (te->data_len < sizeof(struct cd_toc_entry)
2065 			 || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2066 			 || (te->address_format != CD_MSF_FORMAT
2067 			  && te->address_format != CD_LBA_FORMAT)) {
2068 				error = EINVAL;
2069 				printf("scsi_cd: error in readtocentries, "
2070 				       "returning EINVAL\n");
2071 				free(data, M_SCSICD);
2072 				free(lead, M_SCSICD);
2073 				cam_periph_unlock(periph);
2074 				break;
2075 			}
2076 
2077 			th = &data->header;
2078 			error = cdreadtoc(periph, 0, 0, (uint8_t *)th,
2079 					  sizeof (*th), /*sense_flags*/0);
2080 			if (error) {
2081 				free(data, M_SCSICD);
2082 				free(lead, M_SCSICD);
2083 				cam_periph_unlock(periph);
2084 				break;
2085 			}
2086 
2087 			if (softc->quirks & CD_Q_BCD_TRACKS) {
2088 				/* we are going to have to convert the BCD
2089 				 * encoding on the cd to what is expected
2090 				 */
2091 				th->starting_track =
2092 				    bcd2bin(th->starting_track);
2093 				th->ending_track = bcd2bin(th->ending_track);
2094 			}
2095 
2096 			if (starting_track == 0)
2097 				starting_track = th->starting_track;
2098 			else if (starting_track == LEADOUT)
2099 				starting_track = th->ending_track + 1;
2100 			else if (starting_track < th->starting_track ||
2101 				 starting_track > th->ending_track + 1) {
2102 				printf("scsi_cd: error in readtocentries, "
2103 				       "returning EINVAL\n");
2104 				free(data, M_SCSICD);
2105 				free(lead, M_SCSICD);
2106 				cam_periph_unlock(periph);
2107 				error = EINVAL;
2108 				break;
2109 			}
2110 
2111 			/* calculate reading length without leadout entry */
2112 			readlen = (th->ending_track - starting_track + 1) *
2113 				  sizeof(struct cd_toc_entry);
2114 
2115 			/* and with leadout entry */
2116 			len = readlen + sizeof(struct cd_toc_entry);
2117 			if (te->data_len < len) {
2118 				len = te->data_len;
2119 				if (readlen > len)
2120 					readlen = len;
2121 			}
2122 			if (len > sizeof(data->entries)) {
2123 				printf("scsi_cd: error in readtocentries, "
2124 				       "returning EINVAL\n");
2125 				error = EINVAL;
2126 				free(data, M_SCSICD);
2127 				free(lead, M_SCSICD);
2128 				cam_periph_unlock(periph);
2129 				break;
2130 			}
2131 			num = len / sizeof(struct cd_toc_entry);
2132 
2133 			if (readlen > 0) {
2134 				error = cdreadtoc(periph, te->address_format,
2135 						  starting_track,
2136 						  (uint8_t *)data,
2137 						  readlen + sizeof (*th),
2138 						  /*sense_flags*/0);
2139 				if (error) {
2140 					free(data, M_SCSICD);
2141 					free(lead, M_SCSICD);
2142 					cam_periph_unlock(periph);
2143 					break;
2144 				}
2145 			}
2146 
2147 			/* make leadout entry if needed */
2148 			idx = starting_track + num - 1;
2149 			if (softc->quirks & CD_Q_BCD_TRACKS)
2150 				th->ending_track = bcd2bin(th->ending_track);
2151 			if (idx == th->ending_track + 1) {
2152 				error = cdreadtoc(periph, te->address_format,
2153 						  LEADOUT, (uint8_t *)lead,
2154 						  sizeof(*lead),
2155 						  /*sense_flags*/0);
2156 				if (error) {
2157 					free(data, M_SCSICD);
2158 					free(lead, M_SCSICD);
2159 					cam_periph_unlock(periph);
2160 					break;
2161 				}
2162 				data->entries[idx - starting_track] =
2163 					lead->entry;
2164 			}
2165 			if (softc->quirks & CD_Q_BCD_TRACKS) {
2166 				for (idx = 0; idx < num - 1; idx++) {
2167 					data->entries[idx].track =
2168 					    bcd2bin(data->entries[idx].track);
2169 				}
2170 			}
2171 
2172 			cam_periph_unlock(periph);
2173 			error = copyout(data->entries, te_data_get_ptr(te, cmd),
2174 			    len);
2175 			free(data, M_SCSICD);
2176 			free(lead, M_SCSICD);
2177 		}
2178 		break;
2179 	case CDIOREADTOCENTRY:
2180 		{
2181 			struct cd_toc_single *data;
2182 			struct ioc_read_toc_single_entry *te =
2183 				(struct ioc_read_toc_single_entry *) addr;
2184 			struct ioc_toc_header *th;
2185 			uint32_t track;
2186 
2187 			data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2188 
2189 			cam_periph_lock(periph);
2190 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2191 				  ("trying to do CDIOREADTOCENTRY\n"));
2192 
2193 			if (te->address_format != CD_MSF_FORMAT
2194 			    && te->address_format != CD_LBA_FORMAT) {
2195 				printf("error in readtocentry, "
2196 				       " returning EINVAL\n");
2197 				free(data, M_SCSICD);
2198 				error = EINVAL;
2199 				cam_periph_unlock(periph);
2200 				break;
2201 			}
2202 
2203 			th = &data->header;
2204 			error = cdreadtoc(periph, 0, 0, (uint8_t *)th,
2205 					  sizeof (*th), /*sense_flags*/0);
2206 			if (error) {
2207 				free(data, M_SCSICD);
2208 				cam_periph_unlock(periph);
2209 				break;
2210 			}
2211 
2212 			if (softc->quirks & CD_Q_BCD_TRACKS) {
2213 				/* we are going to have to convert the BCD
2214 				 * encoding on the cd to what is expected
2215 				 */
2216 				th->starting_track =
2217 				    bcd2bin(th->starting_track);
2218 				th->ending_track = bcd2bin(th->ending_track);
2219 			}
2220 			track = te->track;
2221 			if (track == 0)
2222 				track = th->starting_track;
2223 			else if (track == LEADOUT)
2224 				/* OK */;
2225 			else if (track < th->starting_track ||
2226 				 track > th->ending_track + 1) {
2227 				printf("error in readtocentry, "
2228 				       " returning EINVAL\n");
2229 				free(data, M_SCSICD);
2230 				error = EINVAL;
2231 				cam_periph_unlock(periph);
2232 				break;
2233 			}
2234 
2235 			error = cdreadtoc(periph, te->address_format, track,
2236 					  (uint8_t *)data, sizeof(*data),
2237 					  /*sense_flags*/0);
2238 			if (error) {
2239 				free(data, M_SCSICD);
2240 				cam_periph_unlock(periph);
2241 				break;
2242 			}
2243 
2244 			if (softc->quirks & CD_Q_BCD_TRACKS)
2245 				data->entry.track = bcd2bin(data->entry.track);
2246 			bcopy(&data->entry, &te->entry,
2247 			      sizeof(struct cd_toc_entry));
2248 			free(data, M_SCSICD);
2249 			cam_periph_unlock(periph);
2250 		}
2251 		break;
2252 	case CDIOCSETPATCH:
2253 		{
2254 			struct ioc_patch *arg = (struct ioc_patch *)addr;
2255 			struct cd_mode_params params;
2256 			union cd_pages *page;
2257 
2258 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2259 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2260 						 M_WAITOK | M_ZERO);
2261 
2262 			cam_periph_lock(periph);
2263 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2264 				  ("trying to do CDIOCSETPATCH\n"));
2265 
2266 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2267 			if (error) {
2268 				free(params.mode_buf, M_SCSICD);
2269 				cam_periph_unlock(periph);
2270 				break;
2271 			}
2272 			page = cdgetpage(&params);
2273 
2274 			page->audio.port[LEFT_PORT].channels =
2275 				arg->patch[0];
2276 			page->audio.port[RIGHT_PORT].channels =
2277 				arg->patch[1];
2278 			page->audio.port[2].channels = arg->patch[2];
2279 			page->audio.port[3].channels = arg->patch[3];
2280 			error = cdsetmode(periph, &params);
2281 			free(params.mode_buf, M_SCSICD);
2282 			cam_periph_unlock(periph);
2283 		}
2284 		break;
2285 	case CDIOCGETVOL:
2286 		{
2287 			struct ioc_vol *arg = (struct ioc_vol *) addr;
2288 			struct cd_mode_params params;
2289 			union cd_pages *page;
2290 
2291 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2292 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2293 						 M_WAITOK | M_ZERO);
2294 
2295 			cam_periph_lock(periph);
2296 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2297 				  ("trying to do CDIOCGETVOL\n"));
2298 
2299 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2300 			if (error) {
2301 				free(params.mode_buf, M_SCSICD);
2302 				cam_periph_unlock(periph);
2303 				break;
2304 			}
2305 			page = cdgetpage(&params);
2306 
2307 			arg->vol[LEFT_PORT] =
2308 				page->audio.port[LEFT_PORT].volume;
2309 			arg->vol[RIGHT_PORT] =
2310 				page->audio.port[RIGHT_PORT].volume;
2311 			arg->vol[2] = page->audio.port[2].volume;
2312 			arg->vol[3] = page->audio.port[3].volume;
2313 			free(params.mode_buf, M_SCSICD);
2314 			cam_periph_unlock(periph);
2315 		}
2316 		break;
2317 	case CDIOCSETVOL:
2318 		{
2319 			struct ioc_vol *arg = (struct ioc_vol *) addr;
2320 			struct cd_mode_params params;
2321 			union cd_pages *page;
2322 
2323 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2324 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2325 						 M_WAITOK | M_ZERO);
2326 
2327 			cam_periph_lock(periph);
2328 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2329 				  ("trying to do CDIOCSETVOL\n"));
2330 
2331 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2332 			if (error) {
2333 				free(params.mode_buf, M_SCSICD);
2334 				cam_periph_unlock(periph);
2335 				break;
2336 			}
2337 			page = cdgetpage(&params);
2338 
2339 			page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2340 			page->audio.port[LEFT_PORT].volume =
2341 				arg->vol[LEFT_PORT];
2342 			page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2343 			page->audio.port[RIGHT_PORT].volume =
2344 				arg->vol[RIGHT_PORT];
2345 			page->audio.port[2].volume = arg->vol[2];
2346 			page->audio.port[3].volume = arg->vol[3];
2347 			error = cdsetmode(periph, &params);
2348 			cam_periph_unlock(periph);
2349 			free(params.mode_buf, M_SCSICD);
2350 		}
2351 		break;
2352 	case CDIOCSETMONO:
2353 		{
2354 			struct cd_mode_params params;
2355 			union cd_pages *page;
2356 
2357 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2358 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2359 						 M_WAITOK | M_ZERO);
2360 
2361 			cam_periph_lock(periph);
2362 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2363 				  ("trying to do CDIOCSETMONO\n"));
2364 
2365 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2366 			if (error) {
2367 				free(params.mode_buf, M_SCSICD);
2368 				cam_periph_unlock(periph);
2369 				break;
2370 			}
2371 			page = cdgetpage(&params);
2372 
2373 			page->audio.port[LEFT_PORT].channels =
2374 				LEFT_CHANNEL | RIGHT_CHANNEL;
2375 			page->audio.port[RIGHT_PORT].channels =
2376 				LEFT_CHANNEL | RIGHT_CHANNEL;
2377 			page->audio.port[2].channels = 0;
2378 			page->audio.port[3].channels = 0;
2379 			error = cdsetmode(periph, &params);
2380 			cam_periph_unlock(periph);
2381 			free(params.mode_buf, M_SCSICD);
2382 		}
2383 		break;
2384 	case CDIOCSETSTEREO:
2385 		{
2386 			struct cd_mode_params params;
2387 			union cd_pages *page;
2388 
2389 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2390 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2391 						 M_WAITOK | M_ZERO);
2392 
2393 			cam_periph_lock(periph);
2394 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2395 				  ("trying to do CDIOCSETSTEREO\n"));
2396 
2397 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2398 			if (error) {
2399 				free(params.mode_buf, M_SCSICD);
2400 				cam_periph_unlock(periph);
2401 				break;
2402 			}
2403 			page = cdgetpage(&params);
2404 
2405 			page->audio.port[LEFT_PORT].channels =
2406 				LEFT_CHANNEL;
2407 			page->audio.port[RIGHT_PORT].channels =
2408 				RIGHT_CHANNEL;
2409 			page->audio.port[2].channels = 0;
2410 			page->audio.port[3].channels = 0;
2411 			error = cdsetmode(periph, &params);
2412 			free(params.mode_buf, M_SCSICD);
2413 			cam_periph_unlock(periph);
2414 		}
2415 		break;
2416 	case CDIOCSETMUTE:
2417 		{
2418 			struct cd_mode_params params;
2419 			union cd_pages *page;
2420 
2421 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2422 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2423 						 M_WAITOK | M_ZERO);
2424 
2425 			cam_periph_lock(periph);
2426 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2427 				  ("trying to do CDIOCSETMUTE\n"));
2428 
2429 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2430 			if (error) {
2431 				free(params.mode_buf, M_SCSICD);
2432 				cam_periph_unlock(periph);
2433 				break;
2434 			}
2435 			page = cdgetpage(&params);
2436 
2437 			page->audio.port[LEFT_PORT].channels = 0;
2438 			page->audio.port[RIGHT_PORT].channels = 0;
2439 			page->audio.port[2].channels = 0;
2440 			page->audio.port[3].channels = 0;
2441 			error = cdsetmode(periph, &params);
2442 			free(params.mode_buf, M_SCSICD);
2443 			cam_periph_unlock(periph);
2444 		}
2445 		break;
2446 	case CDIOCSETLEFT:
2447 		{
2448 			struct cd_mode_params params;
2449 			union cd_pages *page;
2450 
2451 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2452 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2453 						 M_WAITOK | M_ZERO);
2454 
2455 			cam_periph_lock(periph);
2456 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2457 				  ("trying to do CDIOCSETLEFT\n"));
2458 
2459 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2460 			if (error) {
2461 				free(params.mode_buf, M_SCSICD);
2462 				cam_periph_unlock(periph);
2463 				break;
2464 			}
2465 			page = cdgetpage(&params);
2466 
2467 			page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2468 			page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2469 			page->audio.port[2].channels = 0;
2470 			page->audio.port[3].channels = 0;
2471 			error = cdsetmode(periph, &params);
2472 			free(params.mode_buf, M_SCSICD);
2473 			cam_periph_unlock(periph);
2474 		}
2475 		break;
2476 	case CDIOCSETRIGHT:
2477 		{
2478 			struct cd_mode_params params;
2479 			union cd_pages *page;
2480 
2481 			params.alloc_len = sizeof(union cd_mode_data_6_10);
2482 			params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2483 						 M_WAITOK | M_ZERO);
2484 
2485 			cam_periph_lock(periph);
2486 			CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2487 				  ("trying to do CDIOCSETRIGHT\n"));
2488 
2489 			error = cdgetmode(periph, &params, AUDIO_PAGE);
2490 			if (error) {
2491 				free(params.mode_buf, M_SCSICD);
2492 				cam_periph_unlock(periph);
2493 				break;
2494 			}
2495 			page = cdgetpage(&params);
2496 
2497 			page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2498 			page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2499 			page->audio.port[2].channels = 0;
2500 			page->audio.port[3].channels = 0;
2501 			error = cdsetmode(periph, &params);
2502 			free(params.mode_buf, M_SCSICD);
2503 			cam_periph_unlock(periph);
2504 		}
2505 		break;
2506 	case CDIOCRESUME:
2507 		cam_periph_lock(periph);
2508 		error = cdpause(periph, 1);
2509 		cam_periph_unlock(periph);
2510 		break;
2511 	case CDIOCPAUSE:
2512 		cam_periph_lock(periph);
2513 		error = cdpause(periph, 0);
2514 		cam_periph_unlock(periph);
2515 		break;
2516 	case CDIOCSTART:
2517 		cam_periph_lock(periph);
2518 		error = cdstartunit(periph, 0);
2519 		cam_periph_unlock(periph);
2520 		break;
2521 	case CDIOCCLOSE:
2522 		cam_periph_lock(periph);
2523 		error = cdstartunit(periph, 1);
2524 		cam_periph_unlock(periph);
2525 		break;
2526 	case CDIOCSTOP:
2527 		cam_periph_lock(periph);
2528 		error = cdstopunit(periph, 0);
2529 		cam_periph_unlock(periph);
2530 		break;
2531 	case CDIOCEJECT:
2532 		cam_periph_lock(periph);
2533 		error = cdstopunit(periph, 1);
2534 		cam_periph_unlock(periph);
2535 		break;
2536 	case CDIOCALLOW:
2537 		cam_periph_lock(periph);
2538 		cdprevent(periph, PR_ALLOW);
2539 		cam_periph_unlock(periph);
2540 		break;
2541 	case CDIOCPREVENT:
2542 		cam_periph_lock(periph);
2543 		cdprevent(periph, PR_PREVENT);
2544 		cam_periph_unlock(periph);
2545 		break;
2546 	case CDIOCSETDEBUG:
2547 		/* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2548 		error = ENOTTY;
2549 		break;
2550 	case CDIOCCLRDEBUG:
2551 		/* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2552 		error = ENOTTY;
2553 		break;
2554 	case CDIOCRESET:
2555 		/* return (cd_reset(periph)); */
2556 		error = ENOTTY;
2557 		break;
2558 	case CDRIOCREADSPEED:
2559 		cam_periph_lock(periph);
2560 		error = cdsetspeed(periph, *(uint32_t *)addr, CDR_MAX_SPEED);
2561 		cam_periph_unlock(periph);
2562 		break;
2563 	case CDRIOCWRITESPEED:
2564 		cam_periph_lock(periph);
2565 		error = cdsetspeed(periph, CDR_MAX_SPEED, *(uint32_t *)addr);
2566 		cam_periph_unlock(periph);
2567 		break;
2568 	case CDRIOCGETBLOCKSIZE:
2569 		*(int *)addr = softc->params.blksize;
2570 		break;
2571 	case CDRIOCSETBLOCKSIZE:
2572 		if (*(int *)addr <= 0) {
2573 			error = EINVAL;
2574 			break;
2575 		}
2576 		softc->disk->d_sectorsize = softc->params.blksize = *(int *)addr;
2577 		break;
2578 	case DVDIOCSENDKEY:
2579 	case DVDIOCREPORTKEY: {
2580 		struct dvd_authinfo *authinfo;
2581 
2582 		authinfo = (struct dvd_authinfo *)addr;
2583 
2584 		if (cmd == DVDIOCREPORTKEY)
2585 			error = cdreportkey(periph, authinfo);
2586 		else
2587 			error = cdsendkey(periph, authinfo);
2588 		break;
2589 		}
2590 	case DVDIOCREADSTRUCTURE: {
2591 		struct dvd_struct *dvdstruct;
2592 
2593 		dvdstruct = (struct dvd_struct *)addr;
2594 
2595 		error = cdreaddvdstructure(periph, dvdstruct);
2596 
2597 		break;
2598 	}
2599 	default:
2600 		cam_periph_lock(periph);
2601 		error = cam_periph_ioctl(periph, cmd, addr, cderror);
2602 		cam_periph_unlock(periph);
2603 		break;
2604 	}
2605 
2606 	cam_periph_lock(periph);
2607 	cam_periph_unhold(periph);
2608 
2609 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2610 	if (error && bootverbose) {
2611 		printf("scsi_cd.c::ioctl cmd=%08lx error=%d\n", cmd, error);
2612 	}
2613 	cam_periph_unlock(periph);
2614 
2615 	return (error);
2616 }
2617 
2618 static void
2619 cdprevent(struct cam_periph *periph, int action)
2620 {
2621 	union	ccb *ccb;
2622 	struct	cd_softc *softc;
2623 	int	error;
2624 
2625 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2626 
2627 	cam_periph_assert(periph, MA_OWNED);
2628 	softc = (struct cd_softc *)periph->softc;
2629 
2630 	if (((action == PR_ALLOW)
2631 	  && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2632 	 || ((action == PR_PREVENT)
2633 	  && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2634 		return;
2635 	}
2636 
2637 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
2638 
2639 	scsi_prevent(&ccb->csio,
2640 		     /*retries*/ cd_retry_count,
2641 		     /*cbfcnp*/NULL,
2642 		     MSG_SIMPLE_Q_TAG,
2643 		     action,
2644 		     SSD_FULL_SIZE,
2645 		     /* timeout */60000);
2646 
2647 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2648 			/*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2649 
2650 	xpt_release_ccb(ccb);
2651 
2652 	if (error == 0) {
2653 		if (action == PR_ALLOW)
2654 			softc->flags &= ~CD_FLAG_DISC_LOCKED;
2655 		else
2656 			softc->flags |= CD_FLAG_DISC_LOCKED;
2657 	}
2658 }
2659 
2660 static void
2661 cdmediaprobedone(struct cam_periph *periph)
2662 {
2663 	struct cd_softc *softc;
2664 
2665 	cam_periph_assert(periph, MA_OWNED);
2666 	softc = (struct cd_softc *)periph->softc;
2667 
2668 	softc->flags &= ~CD_FLAG_MEDIA_SCAN_ACT;
2669 
2670 	if ((softc->flags & CD_FLAG_MEDIA_WAIT) != 0) {
2671 		softc->flags &= ~CD_FLAG_MEDIA_WAIT;
2672 		wakeup(&softc->toc);
2673 	}
2674 	cam_periph_release_locked(periph);
2675 }
2676 
2677 /*
2678  * XXX: the disk media and sector size is only really able to change
2679  * XXX: while the device is closed.
2680  */
2681 
2682 static int
2683 cdcheckmedia(struct cam_periph *periph, bool do_wait)
2684 {
2685 	struct cd_softc *softc;
2686 	int error;
2687 
2688 	cam_periph_assert(periph, MA_OWNED);
2689 	softc = (struct cd_softc *)periph->softc;
2690 	error = 0;
2691 
2692 	/* Released by cdmediaprobedone(). */
2693 	error = cam_periph_acquire(periph);
2694 	if (error != 0)
2695 		return (error);
2696 
2697 	if (do_wait)
2698 		softc->flags |= CD_FLAG_MEDIA_WAIT;
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 	if (!do_wait)
2705 		return (0);
2706 
2707 	error = msleep(&softc->toc, cam_periph_mtx(periph), PRIBIO,"cdmedia",0);
2708 
2709 	/*
2710 	 * Check to see whether we have a valid size from the media.  We
2711 	 * may or may not have a valid TOC.
2712 	 */
2713 	if (error == 0 && (softc->flags & CD_FLAG_VALID_MEDIA) == 0)
2714 		error = EINVAL;
2715 
2716 	return (error);
2717 }
2718 
2719 static int
2720 cd6byteworkaround(union ccb *ccb)
2721 {
2722 	uint8_t *cdb;
2723 	struct cam_periph *periph;
2724 	struct cd_softc *softc;
2725 	struct cd_mode_params *params;
2726 	int frozen, found;
2727 
2728 	periph = xpt_path_periph(ccb->ccb_h.path);
2729 	softc = (struct cd_softc *)periph->softc;
2730 
2731 	cdb = ccb->csio.cdb_io.cdb_bytes;
2732 
2733 	if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
2734 	 || ((cdb[0] != MODE_SENSE_6)
2735 	  && (cdb[0] != MODE_SELECT_6)))
2736 		return (0);
2737 
2738 	/*
2739 	 * Because there is no convenient place to stash the overall
2740 	 * cd_mode_params structure pointer, we have to grab it like this.
2741 	 * This means that ALL MODE_SENSE and MODE_SELECT requests in the
2742 	 * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
2743 	 *
2744 	 * XXX It would be nice if, at some point, we could increase the
2745 	 * number of available peripheral private pointers.  Both pointers
2746 	 * are currently used in most every peripheral driver.
2747 	 */
2748 	found = 0;
2749 
2750 	STAILQ_FOREACH(params, &softc->mode_queue, links) {
2751 		if (params->mode_buf == ccb->csio.data_ptr) {
2752 			found = 1;
2753 			break;
2754 		}
2755 	}
2756 
2757 	/*
2758 	 * This shouldn't happen.  All mode sense and mode select
2759 	 * operations in the cd(4) driver MUST go through cdgetmode() and
2760 	 * cdsetmode()!
2761 	 */
2762 	if (found == 0) {
2763 		xpt_print(periph->path,
2764 		    "mode buffer not found in mode queue!\n");
2765 		return (0);
2766 	}
2767 
2768 	params->cdb_size = 10;
2769 	softc->minimum_command_size = 10;
2770 	xpt_print(ccb->ccb_h.path,
2771 	    "%s(6) failed, increasing minimum CDB size to 10 bytes\n",
2772 	    (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
2773 
2774 	if (cdb[0] == MODE_SENSE_6) {
2775 		struct scsi_mode_sense_10 ms10;
2776 		struct scsi_mode_sense_6 *ms6;
2777 		int len;
2778 
2779 		ms6 = (struct scsi_mode_sense_6 *)cdb;
2780 
2781 		bzero(&ms10, sizeof(ms10));
2782 		ms10.opcode = MODE_SENSE_10;
2783 		ms10.byte2 = ms6->byte2;
2784 		ms10.page = ms6->page;
2785 
2786 		/*
2787 		 * 10 byte mode header, block descriptor,
2788 		 * sizeof(union cd_pages)
2789 		 */
2790 		len = sizeof(struct cd_mode_data_10);
2791 		ccb->csio.dxfer_len = len;
2792 
2793 		scsi_ulto2b(len, ms10.length);
2794 		ms10.control = ms6->control;
2795 		bcopy(&ms10, cdb, 10);
2796 		ccb->csio.cdb_len = 10;
2797 	} else {
2798 		struct scsi_mode_select_10 ms10;
2799 		struct scsi_mode_select_6 *ms6;
2800 		struct scsi_mode_header_6 *header6;
2801 		struct scsi_mode_header_10 *header10;
2802 		struct scsi_mode_page_header *page_header;
2803 		int blk_desc_len, page_num, page_size, len;
2804 
2805 		ms6 = (struct scsi_mode_select_6 *)cdb;
2806 
2807 		bzero(&ms10, sizeof(ms10));
2808 		ms10.opcode = MODE_SELECT_10;
2809 		ms10.byte2 = ms6->byte2;
2810 
2811 		header6 = (struct scsi_mode_header_6 *)params->mode_buf;
2812 		header10 = (struct scsi_mode_header_10 *)params->mode_buf;
2813 
2814 		page_header = find_mode_page_6(header6);
2815 		page_num = page_header->page_code;
2816 
2817 		blk_desc_len = header6->blk_desc_len;
2818 
2819 		page_size = cdgetpagesize(page_num);
2820 
2821 		if (page_size != (page_header->page_length +
2822 		    sizeof(*page_header)))
2823 			page_size = page_header->page_length +
2824 				sizeof(*page_header);
2825 
2826 		len = sizeof(*header10) + blk_desc_len + page_size;
2827 
2828 		len = min(params->alloc_len, len);
2829 
2830 		/*
2831 		 * Since the 6 byte parameter header is shorter than the 10
2832 		 * byte parameter header, we need to copy the actual mode
2833 		 * page data, and the block descriptor, if any, so things wind
2834 		 * up in the right place.  The regions will overlap, but
2835 		 * bcopy() does the right thing.
2836 		 */
2837 		bcopy(params->mode_buf + sizeof(*header6),
2838 		      params->mode_buf + sizeof(*header10),
2839 		      len - sizeof(*header10));
2840 
2841 		/* Make sure these fields are set correctly. */
2842 		scsi_ulto2b(0, header10->data_length);
2843 		header10->medium_type = 0;
2844 		scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
2845 
2846 		ccb->csio.dxfer_len = len;
2847 
2848 		scsi_ulto2b(len, ms10.length);
2849 		ms10.control = ms6->control;
2850 		bcopy(&ms10, cdb, 10);
2851 		ccb->csio.cdb_len = 10;
2852 	}
2853 
2854 	frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
2855 	ccb->ccb_h.status = CAM_REQUEUE_REQ;
2856 	xpt_action(ccb);
2857 	if (frozen) {
2858 		cam_release_devq(ccb->ccb_h.path,
2859 				 /*relsim_flags*/0,
2860 				 /*openings*/0,
2861 				 /*timeout*/0,
2862 				 /*getcount_only*/0);
2863 	}
2864 
2865 	return (ERESTART);
2866 }
2867 
2868 static int
2869 cderror(union ccb *ccb, uint32_t cam_flags, uint32_t sense_flags)
2870 {
2871 	struct cd_softc *softc;
2872 	struct cam_periph *periph;
2873 	int error, error_code, sense_key, asc, ascq;
2874 
2875 	periph = xpt_path_periph(ccb->ccb_h.path);
2876 	softc = (struct cd_softc *)periph->softc;
2877 
2878 	cam_periph_assert(periph, MA_OWNED);
2879 
2880 	/*
2881 	 * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
2882 	 * CDB comes back with this particular error, try transforming it
2883 	 * into the 10 byte version.
2884 	 */
2885 	error = 0;
2886 	if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
2887 		error = cd6byteworkaround(ccb);
2888 	} else if (scsi_extract_sense_ccb(ccb,
2889 	    &error_code, &sense_key, &asc, &ascq)) {
2890 		if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
2891 			error = cd6byteworkaround(ccb);
2892 		else if (sense_key == SSD_KEY_UNIT_ATTENTION &&
2893 		    asc == 0x28 && ascq == 0x00)
2894 			disk_media_changed(softc->disk, M_NOWAIT);
2895 		else if (sense_key == SSD_KEY_NOT_READY &&
2896 		    asc == 0x3a && (softc->flags & CD_FLAG_SAW_MEDIA)) {
2897 			softc->flags &= ~CD_FLAG_SAW_MEDIA;
2898 			disk_media_gone(softc->disk, M_NOWAIT);
2899 		}
2900 	}
2901 
2902 	if (error == ERESTART)
2903 		return (error);
2904 
2905 	/*
2906 	 * XXX
2907 	 * Until we have a better way of doing pack validation,
2908 	 * don't treat UAs as errors.
2909 	 */
2910 	sense_flags |= SF_RETRY_UA;
2911 
2912 	if (softc->quirks & CD_Q_RETRY_BUSY)
2913 		sense_flags |= SF_RETRY_BUSY;
2914 	return (cam_periph_error(ccb, cam_flags, sense_flags));
2915 }
2916 
2917 static void
2918 cdmediapoll(void *arg)
2919 {
2920 	struct cam_periph *periph = arg;
2921 	struct cd_softc *softc = periph->softc;
2922 
2923 	if (softc->state == CD_STATE_NORMAL && !softc->tur &&
2924 	    softc->outstanding_cmds == 0) {
2925 		if (cam_periph_acquire(periph) == 0) {
2926 			softc->tur = 1;
2927 			xpt_schedule(periph, CAM_PRIORITY_NORMAL);
2928 		}
2929 	}
2930 
2931 	/* Queue us up again */
2932 	if (cd_poll_period != 0) {
2933 		callout_schedule_sbt(&softc->mediapoll_c,
2934 		    cd_poll_period * SBT_1S, 0, C_PREL(1));
2935 	}
2936 }
2937 
2938 /*
2939  * Read table of contents
2940  */
2941 static int
2942 cdreadtoc(struct cam_periph *periph, uint32_t mode, uint32_t start,
2943 	  uint8_t *data, uint32_t len, uint32_t sense_flags)
2944 {
2945         struct ccb_scsiio *csio;
2946 	union ccb *ccb;
2947 	int error;
2948 
2949 	error = 0;
2950 
2951 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
2952 
2953 	csio = &ccb->csio;
2954 
2955 	scsi_read_toc(csio,
2956 		      /* retries */ cd_retry_count,
2957 		      /* cbfcnp */ NULL,
2958 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
2959 		      /* byte1_flags */ (mode == CD_MSF_FORMAT) ? CD_MSF : 0,
2960 		      /* format */ SRTOC_FORMAT_TOC,
2961 		      /* track*/ start,
2962 		      /* data_ptr */ data,
2963 		      /* dxfer_len */ len,
2964 		      /* sense_len */ SSD_FULL_SIZE,
2965 		      /* timeout */ 50000);
2966 
2967 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2968 			 /*sense_flags*/SF_RETRY_UA | sense_flags);
2969 
2970 	xpt_release_ccb(ccb);
2971 
2972 	return(error);
2973 }
2974 
2975 static int
2976 cdreadsubchannel(struct cam_periph *periph, uint32_t mode,
2977 		 uint32_t format, int track,
2978 		 struct cd_sub_channel_info *data, uint32_t len)
2979 {
2980 	struct scsi_read_subchannel *scsi_cmd;
2981         struct ccb_scsiio *csio;
2982 	union ccb *ccb;
2983 	int error;
2984 
2985 	error = 0;
2986 
2987 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
2988 
2989 	csio = &ccb->csio;
2990 
2991 	cam_fill_csio(csio,
2992 		      /* retries */ cd_retry_count,
2993 		      /* cbfcnp */ NULL,
2994 		      /* flags */ CAM_DIR_IN,
2995 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
2996 		      /* data_ptr */ (uint8_t *)data,
2997 		      /* dxfer_len */ len,
2998 		      /* sense_len */ SSD_FULL_SIZE,
2999 		      sizeof(struct scsi_read_subchannel),
3000 		      /* timeout */ 50000);
3001 
3002 	scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3003 	bzero (scsi_cmd, sizeof(*scsi_cmd));
3004 
3005 	scsi_cmd->op_code = READ_SUBCHANNEL;
3006 	if (mode == CD_MSF_FORMAT)
3007 		scsi_cmd->byte1 |= CD_MSF;
3008 	scsi_cmd->byte2 = SRS_SUBQ;
3009 	scsi_cmd->subchan_format = format;
3010 	scsi_cmd->track = track;
3011 	scsi_ulto2b(len, (uint8_t *)scsi_cmd->data_len);
3012 	scsi_cmd->control = 0;
3013 
3014 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3015 			 /*sense_flags*/SF_RETRY_UA);
3016 
3017 	xpt_release_ccb(ccb);
3018 
3019 	return(error);
3020 }
3021 
3022 /*
3023  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3024  * routine.  See comments in cd6byteworkaround() for details.
3025  */
3026 static int
3027 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3028 	  uint32_t page)
3029 {
3030 	struct ccb_scsiio *csio;
3031 	struct cd_softc *softc;
3032 	union ccb *ccb;
3033 	int param_len;
3034 	int error;
3035 
3036 	softc = (struct cd_softc *)periph->softc;
3037 
3038 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3039 
3040 	csio = &ccb->csio;
3041 
3042 	data->cdb_size = softc->minimum_command_size;
3043 	if (data->cdb_size < 10)
3044 		param_len = sizeof(struct cd_mode_data);
3045 	else
3046 		param_len = sizeof(struct cd_mode_data_10);
3047 
3048 	/* Don't say we've got more room than we actually allocated */
3049 	param_len = min(param_len, data->alloc_len);
3050 
3051 	scsi_mode_sense_len(csio,
3052 			    /* retries */ cd_retry_count,
3053 			    /* cbfcnp */ NULL,
3054 			    /* tag_action */ MSG_SIMPLE_Q_TAG,
3055 			    /* dbd */ 0,
3056 			    /* page_code */ SMS_PAGE_CTRL_CURRENT,
3057 			    /* page */ page,
3058 			    /* param_buf */ data->mode_buf,
3059 			    /* param_len */ param_len,
3060 			    /* minimum_cmd_size */ softc->minimum_command_size,
3061 			    /* sense_len */ SSD_FULL_SIZE,
3062 			    /* timeout */ 50000);
3063 
3064 	/*
3065 	 * It would be nice not to have to do this, but there's no
3066 	 * available pointer in the CCB that would allow us to stuff the
3067 	 * mode params structure in there and retrieve it in
3068 	 * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3069 	 * lets the caller know what CDB size we ended up using, so they
3070 	 * can find the actual mode page offset.
3071 	 */
3072 	STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3073 
3074 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3075 			 /*sense_flags*/SF_RETRY_UA);
3076 
3077 	xpt_release_ccb(ccb);
3078 
3079 	STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3080 
3081 	/*
3082 	 * This is a bit of belt-and-suspenders checking, but if we run
3083 	 * into a situation where the target sends back multiple block
3084 	 * descriptors, we might not have enough space in the buffer to
3085 	 * see the whole mode page.  Better to return an error than
3086 	 * potentially access memory beyond our malloced region.
3087 	 */
3088 	if (error == 0) {
3089 		uint32_t data_len;
3090 
3091 		if (data->cdb_size == 10) {
3092 			struct scsi_mode_header_10 *hdr10;
3093 
3094 			hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3095 			data_len = scsi_2btoul(hdr10->data_length);
3096 			data_len += sizeof(hdr10->data_length);
3097 		} else {
3098 			struct scsi_mode_header_6 *hdr6;
3099 
3100 			hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3101 			data_len = hdr6->data_length;
3102 			data_len += sizeof(hdr6->data_length);
3103 		}
3104 
3105 		/*
3106 		 * Complain if there is more mode data available than we
3107 		 * allocated space for.  This could potentially happen if
3108 		 * we miscalculated the page length for some reason, if the
3109 		 * drive returns multiple block descriptors, or if it sets
3110 		 * the data length incorrectly.
3111 		 */
3112 		if (data_len > data->alloc_len) {
3113 			xpt_print(periph->path, "allocated modepage %d length "
3114 			    "%d < returned length %d\n", page, data->alloc_len,
3115 			    data_len);
3116 			error = ENOSPC;
3117 		}
3118 	}
3119 	return (error);
3120 }
3121 
3122 /*
3123  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3124  * routine.  See comments in cd6byteworkaround() for details.
3125  */
3126 static int
3127 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3128 {
3129 	struct ccb_scsiio *csio;
3130 	struct cd_softc *softc;
3131 	union ccb *ccb;
3132 	int cdb_size, param_len;
3133 	int error;
3134 
3135 	softc = (struct cd_softc *)periph->softc;
3136 
3137 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3138 
3139 	csio = &ccb->csio;
3140 
3141 	error = 0;
3142 
3143 	/*
3144 	 * If the data is formatted for the 10 byte version of the mode
3145 	 * select parameter list, we need to use the 10 byte CDB.
3146 	 * Otherwise, we use whatever the stored minimum command size.
3147 	 */
3148 	if (data->cdb_size == 10)
3149 		cdb_size = data->cdb_size;
3150 	else
3151 		cdb_size = softc->minimum_command_size;
3152 
3153 	if (cdb_size >= 10) {
3154 		struct scsi_mode_header_10 *mode_header;
3155 		uint32_t data_len;
3156 
3157 		mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3158 
3159 		data_len = scsi_2btoul(mode_header->data_length);
3160 
3161 		scsi_ulto2b(0, mode_header->data_length);
3162 		/*
3163 		 * SONY drives do not allow a mode select with a medium_type
3164 		 * value that has just been returned by a mode sense; use a
3165 		 * medium_type of 0 (Default) instead.
3166 		 */
3167 		mode_header->medium_type = 0;
3168 
3169 		/*
3170 		 * Pass back whatever the drive passed to us, plus the size
3171 		 * of the data length field.
3172 		 */
3173 		param_len = data_len + sizeof(mode_header->data_length);
3174 
3175 	} else {
3176 		struct scsi_mode_header_6 *mode_header;
3177 
3178 		mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3179 
3180 		param_len = mode_header->data_length + 1;
3181 
3182 		mode_header->data_length = 0;
3183 		/*
3184 		 * SONY drives do not allow a mode select with a medium_type
3185 		 * value that has just been returned by a mode sense; use a
3186 		 * medium_type of 0 (Default) instead.
3187 		 */
3188 		mode_header->medium_type = 0;
3189 	}
3190 
3191 	/* Don't say we've got more room than we actually allocated */
3192 	param_len = min(param_len, data->alloc_len);
3193 
3194 	scsi_mode_select_len(csio,
3195 			     /* retries */ cd_retry_count,
3196 			     /* cbfcnp */ NULL,
3197 			     /* tag_action */ MSG_SIMPLE_Q_TAG,
3198 			     /* scsi_page_fmt */ 1,
3199 			     /* save_pages */ 0,
3200 			     /* param_buf */ data->mode_buf,
3201 			     /* param_len */ param_len,
3202 			     /* minimum_cmd_size */ cdb_size,
3203 			     /* sense_len */ SSD_FULL_SIZE,
3204 			     /* timeout */ 50000);
3205 
3206 	/* See comments in cdgetmode() and cd6byteworkaround(). */
3207 	STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3208 
3209 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3210 			 /*sense_flags*/SF_RETRY_UA);
3211 
3212 	xpt_release_ccb(ccb);
3213 
3214 	STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3215 
3216 	return (error);
3217 }
3218 
3219 static int
3220 cdplay(struct cam_periph *periph, uint32_t blk, uint32_t len)
3221 {
3222 	struct ccb_scsiio *csio;
3223 	union ccb *ccb;
3224 	int error;
3225 	uint8_t cdb_len;
3226 
3227 	error = 0;
3228 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3229 	csio = &ccb->csio;
3230 	/*
3231 	 * Use the smallest possible command to perform the operation.
3232 	 */
3233 	if ((len & 0xffff0000) == 0) {
3234 		/*
3235 		 * We can fit in a 10 byte cdb.
3236 		 */
3237 		struct scsi_play_10 *scsi_cmd;
3238 
3239 		scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3240 		bzero (scsi_cmd, sizeof(*scsi_cmd));
3241 		scsi_cmd->op_code = PLAY_10;
3242 		scsi_ulto4b(blk, (uint8_t *)scsi_cmd->blk_addr);
3243 		scsi_ulto2b(len, (uint8_t *)scsi_cmd->xfer_len);
3244 		cdb_len = sizeof(*scsi_cmd);
3245 	} else  {
3246 		struct scsi_play_12 *scsi_cmd;
3247 
3248 		scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3249 		bzero (scsi_cmd, sizeof(*scsi_cmd));
3250 		scsi_cmd->op_code = PLAY_12;
3251 		scsi_ulto4b(blk, (uint8_t *)scsi_cmd->blk_addr);
3252 		scsi_ulto4b(len, (uint8_t *)scsi_cmd->xfer_len);
3253 		cdb_len = sizeof(*scsi_cmd);
3254 	}
3255 	cam_fill_csio(csio,
3256 		      /*retries*/ cd_retry_count,
3257 		      /*cbfcnp*/NULL,
3258 		      /*flags*/CAM_DIR_NONE,
3259 		      MSG_SIMPLE_Q_TAG,
3260 		      /*dataptr*/NULL,
3261 		      /*datalen*/0,
3262 		      /*sense_len*/SSD_FULL_SIZE,
3263 		      cdb_len,
3264 		      /*timeout*/50 * 1000);
3265 
3266 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3267 			 /*sense_flags*/SF_RETRY_UA);
3268 
3269 	xpt_release_ccb(ccb);
3270 
3271 	return(error);
3272 }
3273 
3274 static int
3275 cdplaymsf(struct cam_periph *periph, uint32_t startm, uint32_t starts,
3276 	  uint32_t startf, uint32_t endm, uint32_t ends, uint32_t endf)
3277 {
3278 	struct scsi_play_msf *scsi_cmd;
3279         struct ccb_scsiio *csio;
3280 	union ccb *ccb;
3281 	int error;
3282 
3283 	error = 0;
3284 
3285 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3286 
3287 	csio = &ccb->csio;
3288 
3289 	cam_fill_csio(csio,
3290 		      /* retries */ cd_retry_count,
3291 		      /* cbfcnp */ NULL,
3292 		      /* flags */ CAM_DIR_NONE,
3293 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3294 		      /* data_ptr */ NULL,
3295 		      /* dxfer_len */ 0,
3296 		      /* sense_len */ SSD_FULL_SIZE,
3297 		      sizeof(struct scsi_play_msf),
3298 		      /* timeout */ 50000);
3299 
3300 	scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3301 	bzero (scsi_cmd, sizeof(*scsi_cmd));
3302 
3303         scsi_cmd->op_code = PLAY_MSF;
3304         scsi_cmd->start_m = startm;
3305         scsi_cmd->start_s = starts;
3306         scsi_cmd->start_f = startf;
3307         scsi_cmd->end_m = endm;
3308         scsi_cmd->end_s = ends;
3309         scsi_cmd->end_f = endf;
3310 
3311 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3312 			 /*sense_flags*/SF_RETRY_UA);
3313 
3314 	xpt_release_ccb(ccb);
3315 
3316 	return(error);
3317 }
3318 
3319 static int
3320 cdplaytracks(struct cam_periph *periph, uint32_t strack, uint32_t sindex,
3321 	     uint32_t etrack, uint32_t eindex)
3322 {
3323 	struct scsi_play_track *scsi_cmd;
3324         struct ccb_scsiio *csio;
3325 	union ccb *ccb;
3326 	int error;
3327 
3328 	error = 0;
3329 
3330 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3331 
3332 	csio = &ccb->csio;
3333 
3334 	cam_fill_csio(csio,
3335 		      /* retries */ cd_retry_count,
3336 		      /* cbfcnp */ NULL,
3337 		      /* flags */ CAM_DIR_NONE,
3338 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3339 		      /* data_ptr */ NULL,
3340 		      /* dxfer_len */ 0,
3341 		      /* sense_len */ SSD_FULL_SIZE,
3342 		      sizeof(struct scsi_play_track),
3343 		      /* timeout */ 50000);
3344 
3345 	scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3346 	bzero (scsi_cmd, sizeof(*scsi_cmd));
3347 
3348         scsi_cmd->op_code = PLAY_TRACK;
3349         scsi_cmd->start_track = strack;
3350         scsi_cmd->start_index = sindex;
3351         scsi_cmd->end_track = etrack;
3352         scsi_cmd->end_index = eindex;
3353 
3354 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3355 			 /*sense_flags*/SF_RETRY_UA);
3356 
3357 	xpt_release_ccb(ccb);
3358 
3359 	return(error);
3360 }
3361 
3362 static int
3363 cdpause(struct cam_periph *periph, uint32_t go)
3364 {
3365 	struct scsi_pause *scsi_cmd;
3366         struct ccb_scsiio *csio;
3367 	union ccb *ccb;
3368 	int error;
3369 
3370 	error = 0;
3371 
3372 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3373 
3374 	csio = &ccb->csio;
3375 
3376 	cam_fill_csio(csio,
3377 		      /* retries */ cd_retry_count,
3378 		      /* cbfcnp */ NULL,
3379 		      /* flags */ CAM_DIR_NONE,
3380 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3381 		      /* data_ptr */ NULL,
3382 		      /* dxfer_len */ 0,
3383 		      /* sense_len */ SSD_FULL_SIZE,
3384 		      sizeof(struct scsi_pause),
3385 		      /* timeout */ 50000);
3386 
3387 	scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3388 	bzero (scsi_cmd, sizeof(*scsi_cmd));
3389 
3390         scsi_cmd->op_code = PAUSE;
3391 	scsi_cmd->resume = go;
3392 
3393 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3394 			 /*sense_flags*/SF_RETRY_UA);
3395 
3396 	xpt_release_ccb(ccb);
3397 
3398 	return(error);
3399 }
3400 
3401 static int
3402 cdstartunit(struct cam_periph *periph, int load)
3403 {
3404 	union ccb *ccb;
3405 	int error;
3406 
3407 	error = 0;
3408 
3409 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3410 
3411 	scsi_start_stop(&ccb->csio,
3412 			/* retries */ cd_retry_count,
3413 			/* cbfcnp */ NULL,
3414 			/* tag_action */ MSG_SIMPLE_Q_TAG,
3415 			/* start */ TRUE,
3416 			/* load_eject */ load,
3417 			/* immediate */ FALSE,
3418 			/* sense_len */ SSD_FULL_SIZE,
3419 			/* timeout */ 50000);
3420 
3421 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3422 			 /*sense_flags*/SF_RETRY_UA);
3423 
3424 	xpt_release_ccb(ccb);
3425 
3426 	return(error);
3427 }
3428 
3429 static int
3430 cdstopunit(struct cam_periph *periph, uint32_t eject)
3431 {
3432 	union ccb *ccb;
3433 	int error;
3434 
3435 	error = 0;
3436 
3437 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3438 
3439 	scsi_start_stop(&ccb->csio,
3440 			/* retries */ cd_retry_count,
3441 			/* cbfcnp */ NULL,
3442 			/* tag_action */ MSG_SIMPLE_Q_TAG,
3443 			/* start */ FALSE,
3444 			/* load_eject */ eject,
3445 			/* immediate */ FALSE,
3446 			/* sense_len */ SSD_FULL_SIZE,
3447 			/* timeout */ 50000);
3448 
3449 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3450 			 /*sense_flags*/SF_RETRY_UA);
3451 
3452 	xpt_release_ccb(ccb);
3453 
3454 	return(error);
3455 }
3456 
3457 static int
3458 cdsetspeed(struct cam_periph *periph, uint32_t rdspeed, uint32_t wrspeed)
3459 {
3460 	struct scsi_set_speed *scsi_cmd;
3461 	struct ccb_scsiio *csio;
3462 	union ccb *ccb;
3463 	int error;
3464 
3465 	error = 0;
3466 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3467 	csio = &ccb->csio;
3468 
3469 	/* Preserve old behavior: units in multiples of CDROM speed */
3470 	if (rdspeed < 177)
3471 		rdspeed *= 177;
3472 	if (wrspeed < 177)
3473 		wrspeed *= 177;
3474 
3475 	cam_fill_csio(csio,
3476 		      /* retries */ cd_retry_count,
3477 		      /* cbfcnp */ NULL,
3478 		      /* flags */ CAM_DIR_NONE,
3479 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3480 		      /* data_ptr */ NULL,
3481 		      /* dxfer_len */ 0,
3482 		      /* sense_len */ SSD_FULL_SIZE,
3483 		      sizeof(struct scsi_set_speed),
3484 		      /* timeout */ 50000);
3485 
3486 	scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3487 	bzero(scsi_cmd, sizeof(*scsi_cmd));
3488 
3489 	scsi_cmd->opcode = SET_CD_SPEED;
3490 	scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3491 	scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3492 
3493 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3494 			 /*sense_flags*/SF_RETRY_UA);
3495 
3496 	xpt_release_ccb(ccb);
3497 
3498 	return(error);
3499 }
3500 
3501 static int
3502 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3503 {
3504 	union ccb *ccb;
3505 	uint8_t *databuf;
3506 	uint32_t lba;
3507 	int error;
3508 	int length;
3509 
3510 	error = 0;
3511 	databuf = NULL;
3512 	lba = 0;
3513 
3514 	switch (authinfo->format) {
3515 	case DVD_REPORT_AGID:
3516 		length = sizeof(struct scsi_report_key_data_agid);
3517 		break;
3518 	case DVD_REPORT_CHALLENGE:
3519 		length = sizeof(struct scsi_report_key_data_challenge);
3520 		break;
3521 	case DVD_REPORT_KEY1:
3522 		length = sizeof(struct scsi_report_key_data_key1_key2);
3523 		break;
3524 	case DVD_REPORT_TITLE_KEY:
3525 		length = sizeof(struct scsi_report_key_data_title);
3526 		/* The lba field is only set for the title key */
3527 		lba = authinfo->lba;
3528 		break;
3529 	case DVD_REPORT_ASF:
3530 		length = sizeof(struct scsi_report_key_data_asf);
3531 		break;
3532 	case DVD_REPORT_RPC:
3533 		length = sizeof(struct scsi_report_key_data_rpc);
3534 		break;
3535 	case DVD_INVALIDATE_AGID:
3536 		length = 0;
3537 		break;
3538 	default:
3539 		return (EINVAL);
3540 	}
3541 
3542 	if (length != 0) {
3543 		databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3544 	} else
3545 		databuf = NULL;
3546 
3547 	cam_periph_lock(periph);
3548 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3549 
3550 	scsi_report_key(&ccb->csio,
3551 			/* retries */ cd_retry_count,
3552 			/* cbfcnp */ NULL,
3553 			/* tag_action */ MSG_SIMPLE_Q_TAG,
3554 			/* lba */ lba,
3555 			/* agid */ authinfo->agid,
3556 			/* key_format */ authinfo->format,
3557 			/* data_ptr */ databuf,
3558 			/* dxfer_len */ length,
3559 			/* sense_len */ SSD_FULL_SIZE,
3560 			/* timeout */ 50000);
3561 
3562 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3563 			 /*sense_flags*/SF_RETRY_UA);
3564 
3565 	if (error != 0)
3566 		goto bailout;
3567 
3568 	if (ccb->csio.resid != 0) {
3569 		xpt_print(periph->path, "warning, residual for report key "
3570 		    "command is %d\n", ccb->csio.resid);
3571 	}
3572 
3573 	switch(authinfo->format) {
3574 	case DVD_REPORT_AGID: {
3575 		struct scsi_report_key_data_agid *agid_data;
3576 
3577 		agid_data = (struct scsi_report_key_data_agid *)databuf;
3578 
3579 		authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3580 			RKD_AGID_SHIFT;
3581 		break;
3582 	}
3583 	case DVD_REPORT_CHALLENGE: {
3584 		struct scsi_report_key_data_challenge *chal_data;
3585 
3586 		chal_data = (struct scsi_report_key_data_challenge *)databuf;
3587 
3588 		bcopy(chal_data->challenge_key, authinfo->keychal,
3589 		      min(sizeof(chal_data->challenge_key),
3590 		          sizeof(authinfo->keychal)));
3591 		break;
3592 	}
3593 	case DVD_REPORT_KEY1: {
3594 		struct scsi_report_key_data_key1_key2 *key1_data;
3595 
3596 		key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3597 
3598 		bcopy(key1_data->key1, authinfo->keychal,
3599 		      min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3600 		break;
3601 	}
3602 	case DVD_REPORT_TITLE_KEY: {
3603 		struct scsi_report_key_data_title *title_data;
3604 
3605 		title_data = (struct scsi_report_key_data_title *)databuf;
3606 
3607 		authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3608 			RKD_TITLE_CPM_SHIFT;
3609 		authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3610 			RKD_TITLE_CP_SEC_SHIFT;
3611 		authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3612 			RKD_TITLE_CMGS_SHIFT;
3613 		bcopy(title_data->title_key, authinfo->keychal,
3614 		      min(sizeof(title_data->title_key),
3615 			  sizeof(authinfo->keychal)));
3616 		break;
3617 	}
3618 	case DVD_REPORT_ASF: {
3619 		struct scsi_report_key_data_asf *asf_data;
3620 
3621 		asf_data = (struct scsi_report_key_data_asf *)databuf;
3622 
3623 		authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3624 		break;
3625 	}
3626 	case DVD_REPORT_RPC: {
3627 		struct scsi_report_key_data_rpc *rpc_data;
3628 
3629 		rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3630 
3631 		authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3632 			RKD_RPC_TYPE_SHIFT;
3633 		authinfo->vend_rsts =
3634 			(rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3635 			RKD_RPC_VENDOR_RESET_SHIFT;
3636 		authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3637 		authinfo->region = rpc_data->region_mask;
3638 		authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3639 		break;
3640 	}
3641 	case DVD_INVALIDATE_AGID:
3642 		break;
3643 	default:
3644 		/* This should be impossible, since we checked above */
3645 		error = EINVAL;
3646 		goto bailout;
3647 		break; /* NOTREACHED */
3648 	}
3649 
3650 bailout:
3651 	xpt_release_ccb(ccb);
3652 	cam_periph_unlock(periph);
3653 
3654 	if (databuf != NULL)
3655 		free(databuf, M_DEVBUF);
3656 
3657 	return(error);
3658 }
3659 
3660 static int
3661 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3662 {
3663 	union ccb *ccb;
3664 	uint8_t *databuf;
3665 	int length;
3666 	int error;
3667 
3668 	error = 0;
3669 	databuf = NULL;
3670 
3671 	switch(authinfo->format) {
3672 	case DVD_SEND_CHALLENGE: {
3673 		struct scsi_report_key_data_challenge *challenge_data;
3674 
3675 		length = sizeof(*challenge_data);
3676 
3677 		challenge_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3678 
3679 		databuf = (uint8_t *)challenge_data;
3680 
3681 		scsi_ulto2b(length - sizeof(challenge_data->data_len),
3682 			    challenge_data->data_len);
3683 
3684 		bcopy(authinfo->keychal, challenge_data->challenge_key,
3685 		      min(sizeof(authinfo->keychal),
3686 			  sizeof(challenge_data->challenge_key)));
3687 		break;
3688 	}
3689 	case DVD_SEND_KEY2: {
3690 		struct scsi_report_key_data_key1_key2 *key2_data;
3691 
3692 		length = sizeof(*key2_data);
3693 
3694 		key2_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3695 
3696 		databuf = (uint8_t *)key2_data;
3697 
3698 		scsi_ulto2b(length - sizeof(key2_data->data_len),
3699 			    key2_data->data_len);
3700 
3701 		bcopy(authinfo->keychal, key2_data->key1,
3702 		      min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
3703 
3704 		break;
3705 	}
3706 	case DVD_SEND_RPC: {
3707 		struct scsi_send_key_data_rpc *rpc_data;
3708 
3709 		length = sizeof(*rpc_data);
3710 
3711 		rpc_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3712 
3713 		databuf = (uint8_t *)rpc_data;
3714 
3715 		scsi_ulto2b(length - sizeof(rpc_data->data_len),
3716 			    rpc_data->data_len);
3717 
3718 		rpc_data->region_code = authinfo->region;
3719 		break;
3720 	}
3721 	default:
3722 		return (EINVAL);
3723 	}
3724 
3725 	cam_periph_lock(periph);
3726 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3727 
3728 	scsi_send_key(&ccb->csio,
3729 		      /* retries */ cd_retry_count,
3730 		      /* cbfcnp */ NULL,
3731 		      /* tag_action */ MSG_SIMPLE_Q_TAG,
3732 		      /* agid */ authinfo->agid,
3733 		      /* key_format */ authinfo->format,
3734 		      /* data_ptr */ databuf,
3735 		      /* dxfer_len */ length,
3736 		      /* sense_len */ SSD_FULL_SIZE,
3737 		      /* timeout */ 50000);
3738 
3739 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3740 			 /*sense_flags*/SF_RETRY_UA);
3741 
3742 	xpt_release_ccb(ccb);
3743 	cam_periph_unlock(periph);
3744 
3745 	if (databuf != NULL)
3746 		free(databuf, M_DEVBUF);
3747 
3748 	return(error);
3749 }
3750 
3751 static int
3752 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
3753 {
3754 	union ccb *ccb;
3755 	uint8_t *databuf;
3756 	uint32_t address;
3757 	int error;
3758 	int length;
3759 
3760 	error = 0;
3761 	databuf = NULL;
3762 	/* The address is reserved for many of the formats */
3763 	address = 0;
3764 
3765 	switch(dvdstruct->format) {
3766 	case DVD_STRUCT_PHYSICAL:
3767 		length = sizeof(struct scsi_read_dvd_struct_data_physical);
3768 		break;
3769 	case DVD_STRUCT_COPYRIGHT:
3770 		length = sizeof(struct scsi_read_dvd_struct_data_copyright);
3771 		break;
3772 	case DVD_STRUCT_DISCKEY:
3773 		length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
3774 		break;
3775 	case DVD_STRUCT_BCA:
3776 		length = sizeof(struct scsi_read_dvd_struct_data_bca);
3777 		break;
3778 	case DVD_STRUCT_MANUFACT:
3779 		length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
3780 		break;
3781 	case DVD_STRUCT_CMI:
3782 		return (ENODEV);
3783 	case DVD_STRUCT_PROTDISCID:
3784 		length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
3785 		break;
3786 	case DVD_STRUCT_DISCKEYBLOCK:
3787 		length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
3788 		break;
3789 	case DVD_STRUCT_DDS:
3790 		length = sizeof(struct scsi_read_dvd_struct_data_dds);
3791 		break;
3792 	case DVD_STRUCT_MEDIUM_STAT:
3793 		length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
3794 		break;
3795 	case DVD_STRUCT_SPARE_AREA:
3796 		length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
3797 		break;
3798 	case DVD_STRUCT_RMD_LAST:
3799 		return (ENODEV);
3800 	case DVD_STRUCT_RMD_RMA:
3801 		return (ENODEV);
3802 	case DVD_STRUCT_PRERECORDED:
3803 		length = sizeof(struct scsi_read_dvd_struct_data_leadin);
3804 		break;
3805 	case DVD_STRUCT_UNIQUEID:
3806 		length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
3807 		break;
3808 	case DVD_STRUCT_DCB:
3809 		return (ENODEV);
3810 	case DVD_STRUCT_LIST:
3811 		/*
3812 		 * This is the maximum allocation length for the READ DVD
3813 		 * STRUCTURE command.  There's nothing in the MMC3 spec
3814 		 * that indicates a limit in the amount of data that can
3815 		 * be returned from this call, other than the limits
3816 		 * imposed by the 2-byte length variables.
3817 		 */
3818 		length = 65535;
3819 		break;
3820 	default:
3821 		return (EINVAL);
3822 	}
3823 
3824 	if (length != 0) {
3825 		databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3826 	} else
3827 		databuf = NULL;
3828 
3829 	cam_periph_lock(periph);
3830 	ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
3831 
3832 	scsi_read_dvd_structure(&ccb->csio,
3833 				/* retries */ cd_retry_count,
3834 				/* cbfcnp */ NULL,
3835 				/* tag_action */ MSG_SIMPLE_Q_TAG,
3836 				/* lba */ address,
3837 				/* layer_number */ dvdstruct->layer_num,
3838 				/* key_format */ dvdstruct->format,
3839 				/* agid */ dvdstruct->agid,
3840 				/* data_ptr */ databuf,
3841 				/* dxfer_len */ length,
3842 				/* sense_len */ SSD_FULL_SIZE,
3843 				/* timeout */ 50000);
3844 
3845 	error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3846 			 /*sense_flags*/SF_RETRY_UA);
3847 
3848 	if (error != 0)
3849 		goto bailout;
3850 
3851 	switch(dvdstruct->format) {
3852 	case DVD_STRUCT_PHYSICAL: {
3853 		struct scsi_read_dvd_struct_data_layer_desc *inlayer;
3854 		struct dvd_layer *outlayer;
3855 		struct scsi_read_dvd_struct_data_physical *phys_data;
3856 
3857 		phys_data =
3858 			(struct scsi_read_dvd_struct_data_physical *)databuf;
3859 		inlayer = &phys_data->layer_desc;
3860 		outlayer = (struct dvd_layer *)&dvdstruct->data;
3861 
3862 		dvdstruct->length = sizeof(*inlayer);
3863 
3864 		outlayer->book_type = (inlayer->book_type_version &
3865 			RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
3866 		outlayer->book_version = (inlayer->book_type_version &
3867 			RDSD_BOOK_VERSION_MASK);
3868 		outlayer->disc_size = (inlayer->disc_size_max_rate &
3869 			RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
3870 		outlayer->max_rate = (inlayer->disc_size_max_rate &
3871 			RDSD_MAX_RATE_MASK);
3872 		outlayer->nlayers = (inlayer->layer_info &
3873 			RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
3874 		outlayer->track_path = (inlayer->layer_info &
3875 			RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
3876 		outlayer->layer_type = (inlayer->layer_info &
3877 			RDSD_LAYER_TYPE_MASK);
3878 		outlayer->linear_density = (inlayer->density &
3879 			RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
3880 		outlayer->track_density = (inlayer->density &
3881 			RDSD_TRACK_DENSITY_MASK);
3882 		outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
3883 			RDSD_BCA_SHIFT;
3884 		outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
3885 		outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
3886 		outlayer->end_sector_l0 =
3887 			scsi_3btoul(inlayer->end_sector_layer0);
3888 		break;
3889 	}
3890 	case DVD_STRUCT_COPYRIGHT: {
3891 		struct scsi_read_dvd_struct_data_copyright *copy_data;
3892 
3893 		copy_data = (struct scsi_read_dvd_struct_data_copyright *)
3894 			databuf;
3895 
3896 		dvdstruct->cpst = copy_data->cps_type;
3897 		dvdstruct->rmi = copy_data->region_info;
3898 		dvdstruct->length = 0;
3899 
3900 		break;
3901 	}
3902 	default:
3903 		/*
3904 		 * Tell the user what the overall length is, no matter
3905 		 * what we can actually fit in the data buffer.
3906 		 */
3907 		dvdstruct->length = length - ccb->csio.resid -
3908 			sizeof(struct scsi_read_dvd_struct_data_header);
3909 
3910 		/*
3911 		 * But only actually copy out the smaller of what we read
3912 		 * in or what the structure can take.
3913 		 */
3914 		bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
3915 		      dvdstruct->data,
3916 		      min(sizeof(dvdstruct->data), dvdstruct->length));
3917 		break;
3918 	}
3919 
3920 bailout:
3921 	xpt_release_ccb(ccb);
3922 	cam_periph_unlock(periph);
3923 
3924 	if (databuf != NULL)
3925 		free(databuf, M_DEVBUF);
3926 
3927 	return(error);
3928 }
3929 
3930 void
3931 scsi_report_key(struct ccb_scsiio *csio, uint32_t retries,
3932 		void (*cbfcnp)(struct cam_periph *, union ccb *),
3933 		uint8_t tag_action, uint32_t lba, uint8_t agid,
3934 		uint8_t key_format, uint8_t *data_ptr, uint32_t dxfer_len,
3935 		uint8_t sense_len, uint32_t timeout)
3936 {
3937 	struct scsi_report_key *scsi_cmd;
3938 
3939 	scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
3940 	bzero(scsi_cmd, sizeof(*scsi_cmd));
3941 	scsi_cmd->opcode = REPORT_KEY;
3942 	scsi_ulto4b(lba, scsi_cmd->lba);
3943 	scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
3944 	scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
3945 		(key_format & RK_KF_KEYFORMAT_MASK);
3946 
3947 	cam_fill_csio(csio,
3948 		      retries,
3949 		      cbfcnp,
3950 		      /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
3951 		      tag_action,
3952 		      /*data_ptr*/ data_ptr,
3953 		      /*dxfer_len*/ dxfer_len,
3954 		      sense_len,
3955 		      sizeof(*scsi_cmd),
3956 		      timeout);
3957 }
3958 
3959 void
3960 scsi_send_key(struct ccb_scsiio *csio, uint32_t retries,
3961 	      void (*cbfcnp)(struct cam_periph *, union ccb *),
3962 	      uint8_t tag_action, uint8_t agid, uint8_t key_format,
3963 	      uint8_t *data_ptr, uint32_t dxfer_len, uint8_t sense_len,
3964 	      uint32_t timeout)
3965 {
3966 	struct scsi_send_key *scsi_cmd;
3967 
3968 	scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
3969 	bzero(scsi_cmd, sizeof(*scsi_cmd));
3970 	scsi_cmd->opcode = SEND_KEY;
3971 
3972 	scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
3973 	scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
3974 		(key_format & RK_KF_KEYFORMAT_MASK);
3975 
3976 	cam_fill_csio(csio,
3977 		      retries,
3978 		      cbfcnp,
3979 		      /*flags*/ CAM_DIR_OUT,
3980 		      tag_action,
3981 		      /*data_ptr*/ data_ptr,
3982 		      /*dxfer_len*/ dxfer_len,
3983 		      sense_len,
3984 		      sizeof(*scsi_cmd),
3985 		      timeout);
3986 }
3987 
3988 void
3989 scsi_read_dvd_structure(struct ccb_scsiio *csio, uint32_t retries,
3990 			void (*cbfcnp)(struct cam_periph *, union ccb *),
3991 			uint8_t tag_action, uint32_t address,
3992 			uint8_t layer_number, uint8_t format, uint8_t agid,
3993 			uint8_t *data_ptr, uint32_t dxfer_len,
3994 			uint8_t sense_len, uint32_t timeout)
3995 {
3996 	struct scsi_read_dvd_structure *scsi_cmd;
3997 
3998 	scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
3999 	bzero(scsi_cmd, sizeof(*scsi_cmd));
4000 	scsi_cmd->opcode = READ_DVD_STRUCTURE;
4001 
4002 	scsi_ulto4b(address, scsi_cmd->address);
4003 	scsi_cmd->layer_number = layer_number;
4004 	scsi_cmd->format = format;
4005 	scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4006 	/* The AGID is the top two bits of this byte */
4007 	scsi_cmd->agid = agid << 6;
4008 
4009 	cam_fill_csio(csio,
4010 		      retries,
4011 		      cbfcnp,
4012 		      /*flags*/ CAM_DIR_IN,
4013 		      tag_action,
4014 		      /*data_ptr*/ data_ptr,
4015 		      /*dxfer_len*/ dxfer_len,
4016 		      sense_len,
4017 		      sizeof(*scsi_cmd),
4018 		      timeout);
4019 }
4020 
4021 void
4022 scsi_read_toc(struct ccb_scsiio *csio, uint32_t retries,
4023 	      void (*cbfcnp)(struct cam_periph *, union ccb *),
4024 	      uint8_t tag_action, uint8_t byte1_flags, uint8_t format,
4025 	      uint8_t track, uint8_t *data_ptr, uint32_t dxfer_len,
4026 	      int sense_len, int timeout)
4027 {
4028 	struct scsi_read_toc *scsi_cmd;
4029 
4030 	scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
4031 	bzero(scsi_cmd, sizeof(*scsi_cmd));
4032 	scsi_cmd->op_code = READ_TOC;
4033 
4034 	/*
4035 	 * The structure is counting from 1, the function counting from 0.
4036 	 * The spec counts from 0.  In MMC-6, there is only one flag, the
4037 	 * MSF flag.  But we put the whole byte in for a bit a future-proofing.
4038 	 */
4039 	scsi_cmd->byte2 = byte1_flags;
4040 	scsi_cmd->format = format;
4041 	scsi_cmd->from_track = track;
4042 	scsi_ulto2b(dxfer_len, scsi_cmd->data_len);
4043 
4044 	cam_fill_csio(csio,
4045 		      /* retries */ retries,
4046 		      /* cbfcnp */ cbfcnp,
4047 		      /* flags */ CAM_DIR_IN,
4048 		      /* tag_action */ tag_action,
4049 		      /* data_ptr */ data_ptr,
4050 		      /* dxfer_len */ dxfer_len,
4051 		      /* sense_len */ sense_len,
4052 		      sizeof(*scsi_cmd),
4053 		      /* timeout */ timeout);
4054 }
4055