xref: /netbsd-src/sys/dev/scsipi/cd.c (revision b7b7574d3bf8eeb51a1fa3977b59142ec6434a55)
1 /*	$NetBSD: cd.c,v 1.319 2014/04/18 06:23:32 martin Exp $	*/
2 
3 /*-
4  * Copyright (c) 1998, 2001, 2003, 2004, 2005, 2008 The NetBSD Foundation,
5  * Inc.  All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Charles M. Hannum.
9  *
10  * MMC framework implemented and contributed to the NetBSD Foundation by
11  * Reinoud Zandijk.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32  * POSSIBILITY OF SUCH DAMAGE.
33  */
34 
35 /*
36  * Originally written by Julian Elischer (julian@tfs.com)
37  * for TRW Financial Systems for use under the MACH(2.5) operating system.
38  *
39  * TRW Financial Systems, in accordance with their agreement with Carnegie
40  * Mellon University, makes this software available to CMU to distribute
41  * or use in any manner that they see fit as long as this message is kept with
42  * the software. For this reason TFS also grants any other persons or
43  * organisations permission to use or modify this software.
44  *
45  * TFS supplies this software to be publicly redistributed
46  * on the understanding that TFS is not responsible for the correct
47  * functioning of this software in any circumstances.
48  *
49  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
50  */
51 
52 #include <sys/cdefs.h>
53 __KERNEL_RCSID(0, "$NetBSD: cd.c,v 1.319 2014/04/18 06:23:32 martin Exp $");
54 
55 #include <sys/param.h>
56 #include <sys/systm.h>
57 #include <sys/kernel.h>
58 #include <sys/file.h>
59 #include <sys/stat.h>
60 #include <sys/ioctl.h>
61 #include <sys/buf.h>
62 #include <sys/bufq.h>
63 #include <sys/uio.h>
64 #include <sys/malloc.h>
65 #include <sys/errno.h>
66 #include <sys/device.h>
67 #include <sys/disklabel.h>
68 #include <sys/disk.h>
69 #include <sys/cdio.h>
70 #include <sys/dvdio.h>
71 #include <sys/scsiio.h>
72 #include <sys/proc.h>
73 #include <sys/conf.h>
74 #include <sys/vnode.h>
75 #include <sys/rnd.h>
76 
77 #include <dev/scsipi/scsi_spc.h>
78 #include <dev/scsipi/scsipi_all.h>
79 #include <dev/scsipi/scsipi_cd.h>
80 #include <dev/scsipi/scsipi_disk.h>	/* rw_big and start_stop come */
81 #include <dev/scsipi/scsi_all.h>
82 					/* from there */
83 #include <dev/scsipi/scsi_disk.h>	/* rw comes from there */
84 #include <dev/scsipi/scsipiconf.h>
85 #include <dev/scsipi/scsipi_base.h>
86 #include <dev/scsipi/cdvar.h>
87 
88 #include <prop/proplib.h>
89 
90 #define	CDUNIT(z)			DISKUNIT(z)
91 #define	CDPART(z)			DISKPART(z)
92 #define	CDMINOR(unit, part)		DISKMINOR(unit, part)
93 #define	MAKECDDEV(maj, unit, part)	MAKEDISKDEV(maj, unit, part)
94 
95 #define MAXTRACK	99
96 #define CD_BLOCK_OFFSET	150
97 #define CD_FRAMES	75
98 #define CD_SECS		60
99 
100 #define CD_TOC_FORM	0	/* formatted TOC, exposed to userland     */
101 #define CD_TOC_MSINFO	1	/* multi-session info			  */
102 #define CD_TOC_RAW	2	/* raw TOC as on disc, unprocessed	  */
103 #define CD_TOC_PMA	3	/* PMA, used as intermediate (rare use)   */
104 #define CD_TOC_ATIP	4	/* pressed space of recordable		  */
105 #define CD_TOC_CDTEXT	5	/* special CD-TEXT, rarely used		  */
106 
107 #define P5LEN	0x32
108 #define MS5LEN	(P5LEN + 8 + 2)
109 
110 struct cd_formatted_toc {
111 	struct ioc_toc_header header;
112 	struct cd_toc_entry entries[MAXTRACK+1]; /* One extra for the */
113 						 /* leadout */
114 };
115 
116 struct cdbounce {
117 	struct buf     *obp;			/* original buf */
118 	int		doff;			/* byte offset in orig. buf */
119 	int		soff;			/* byte offset in bounce buf */
120 	int		resid;			/* residual i/o in orig. buf */
121 	int		bcount;			/* actual obp bytes in bounce */
122 };
123 
124 static void	cdstart(struct scsipi_periph *);
125 static void	cdrestart(void *);
126 static void	cdminphys(struct buf *);
127 static void	cdgetdefaultlabel(struct cd_softc *, struct cd_formatted_toc *,
128 		    struct disklabel *);
129 static void	cdgetdisklabel(struct cd_softc *);
130 static void	cddone(struct scsipi_xfer *, int);
131 static void	cdbounce(struct buf *);
132 static int	cd_interpret_sense(struct scsipi_xfer *);
133 static u_long	cd_size(struct cd_softc *, int);
134 static int	cd_play(struct cd_softc *, int, int);
135 static int	cd_play_tracks(struct cd_softc *, struct cd_formatted_toc *,
136 		    int, int, int, int);
137 static int	cd_play_msf(struct cd_softc *, int, int, int, int, int, int);
138 static int	cd_pause(struct cd_softc *, int);
139 static int	cd_reset(struct cd_softc *);
140 static int	cd_read_subchannel(struct cd_softc *, int, int, int,
141 		    struct cd_sub_channel_info *, int, int);
142 static int	cd_read_toc(struct cd_softc *, int, int, int,
143 		    struct cd_formatted_toc *, int, int, int);
144 static int	cd_get_parms(struct cd_softc *, int);
145 static int	cd_load_toc(struct cd_softc *, int, struct cd_formatted_toc *, int);
146 static int	cdreadmsaddr(struct cd_softc *, struct cd_formatted_toc *,int *);
147 static int	cdcachesync(struct scsipi_periph *periph, int flags);
148 
149 static int	dvd_auth(struct cd_softc *, dvd_authinfo *);
150 static int	dvd_read_physical(struct cd_softc *, dvd_struct *);
151 static int	dvd_read_copyright(struct cd_softc *, dvd_struct *);
152 static int	dvd_read_disckey(struct cd_softc *, dvd_struct *);
153 static int	dvd_read_bca(struct cd_softc *, dvd_struct *);
154 static int	dvd_read_manufact(struct cd_softc *, dvd_struct *);
155 static int	dvd_read_struct(struct cd_softc *, dvd_struct *);
156 
157 static int	cd_mode_sense(struct cd_softc *, u_int8_t, void *, size_t, int,
158 		    int, int *);
159 static int	cd_mode_select(struct cd_softc *, u_int8_t, void *, size_t,
160 		    int, int);
161 static int	cd_setchan(struct cd_softc *, int, int, int, int, int);
162 static int	cd_getvol(struct cd_softc *, struct ioc_vol *, int);
163 static int	cd_setvol(struct cd_softc *, const struct ioc_vol *, int);
164 static int	cd_set_pa_immed(struct cd_softc *, int);
165 static int	cd_load_unload(struct cd_softc *, struct ioc_load_unload *);
166 static int	cd_setblksize(struct cd_softc *);
167 
168 static int	cdmatch(device_t, cfdata_t, void *);
169 static void	cdattach(device_t, device_t, void *);
170 static int	cddetach(device_t, int);
171 
172 static int	mmc_getdiscinfo(struct scsipi_periph *, struct mmc_discinfo *);
173 static int	mmc_gettrackinfo(struct scsipi_periph *, struct mmc_trackinfo *);
174 static int	mmc_do_op(struct scsipi_periph *, struct mmc_op *);
175 static int	mmc_setup_writeparams(struct scsipi_periph *, struct mmc_writeparams *);
176 
177 static void	cd_set_geometry(struct cd_softc *);
178 
179 CFATTACH_DECL3_NEW(cd, sizeof(struct cd_softc), cdmatch, cdattach, cddetach,
180     NULL, NULL, NULL, DVF_DETACH_SHUTDOWN);
181 
182 extern struct cfdriver cd_cd;
183 
184 static const struct scsipi_inquiry_pattern cd_patterns[] = {
185 	{T_CDROM, T_REMOV,
186 	 "",         "",                 ""},
187 	{T_WORM, T_REMOV,
188 	 "",         "",                 ""},
189 #if 0
190 	{T_CDROM, T_REMOV, /* more luns */
191 	 "PIONEER ", "CD-ROM DRM-600  ", ""},
192 #endif
193 	{T_DIRECT, T_REMOV,
194 	 "NEC                 CD-ROM DRIVE:260", "", ""},
195 };
196 
197 static dev_type_open(cdopen);
198 static dev_type_close(cdclose);
199 static dev_type_read(cdread);
200 static dev_type_write(cdwrite);
201 static dev_type_ioctl(cdioctl);
202 static dev_type_strategy(cdstrategy);
203 static dev_type_dump(cddump);
204 static dev_type_size(cdsize);
205 
206 const struct bdevsw cd_bdevsw = {
207 	.d_open = cdopen,
208 	.d_close = cdclose,
209 	.d_strategy = cdstrategy,
210 	.d_ioctl = cdioctl,
211 	.d_dump = cddump,
212 	.d_psize = cdsize,
213 	.d_flag = D_DISK
214 };
215 
216 const struct cdevsw cd_cdevsw = {
217 	.d_open = cdopen,
218 	.d_close = cdclose,
219 	.d_read = cdread,
220 	.d_write = cdwrite,
221 	.d_ioctl = cdioctl,
222 	.d_stop = nostop,
223 	.d_tty = notty,
224 	.d_poll = nopoll,
225 	.d_mmap = nommap,
226 	.d_kqfilter = nokqfilter,
227 	.d_flag = D_DISK
228 };
229 
230 static struct dkdriver cddkdriver = { cdstrategy, NULL };
231 
232 static const struct scsipi_periphsw cd_switch = {
233 	cd_interpret_sense,	/* use our error handler first */
234 	cdstart,		/* we have a queue, which is started by this */
235 	NULL,			/* we do not have an async handler */
236 	cddone,			/* deal with stats at interrupt time */
237 };
238 
239 /*
240  * The routine called by the low level scsi routine when it discovers
241  * A device suitable for this driver
242  */
243 static int
244 cdmatch(device_t parent, cfdata_t match, void *aux)
245 {
246 	struct scsipibus_attach_args *sa = aux;
247 	int priority;
248 
249 	(void)scsipi_inqmatch(&sa->sa_inqbuf,
250 	    cd_patterns, sizeof(cd_patterns) / sizeof(cd_patterns[0]),
251 	    sizeof(cd_patterns[0]), &priority);
252 
253 	return (priority);
254 }
255 
256 static void
257 cdattach(device_t parent, device_t self, void *aux)
258 {
259 	struct cd_softc *cd = device_private(self);
260 	struct scsipibus_attach_args *sa = aux;
261 	struct scsipi_periph *periph = sa->sa_periph;
262 
263 	SC_DEBUG(periph, SCSIPI_DB2, ("cdattach: "));
264 
265 	cd->sc_dev = self;
266 
267 	mutex_init(&cd->sc_lock, MUTEX_DEFAULT, IPL_NONE);
268 
269 	if (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph)) ==
270 	    SCSIPI_BUSTYPE_SCSI && periph->periph_version == 0)
271 		cd->flags |= CDF_ANCIENT;
272 
273 	bufq_alloc(&cd->buf_queue, "disksort", BUFQ_SORT_RAWBLOCK);
274 
275 	callout_init(&cd->sc_callout, 0);
276 
277 	/*
278 	 * Store information needed to contact our base driver
279 	 */
280 	cd->sc_periph = periph;
281 
282 	periph->periph_dev = cd->sc_dev;
283 	periph->periph_switch = &cd_switch;
284 
285 	/*
286 	 * Increase our openings to the maximum-per-periph
287 	 * supported by the adapter.  This will either be
288 	 * clamped down or grown by the adapter if necessary.
289 	 */
290 	periph->periph_openings =
291 	    SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel);
292 	periph->periph_flags |= PERIPH_GROW_OPENINGS;
293 
294 	/*
295 	 * Initialize and attach the disk structure.
296 	 */
297 	disk_init(&cd->sc_dk, device_xname(cd->sc_dev), &cddkdriver);
298 	disk_attach(&cd->sc_dk);
299 
300 	aprint_normal("\n");
301 	aprint_naive("\n");
302 
303 	rnd_attach_source(&cd->rnd_source, device_xname(cd->sc_dev),
304 			  RND_TYPE_DISK, 0);
305 
306 	if (!pmf_device_register(self, NULL, NULL))
307 		aprint_error_dev(self, "couldn't establish power handler\n");
308 }
309 
310 static int
311 cddetach(device_t self, int flags)
312 {
313 	struct cd_softc *cd = device_private(self);
314 	int s, bmaj, cmaj, i, mn;
315 
316 	/* locate the major number */
317 	bmaj = bdevsw_lookup_major(&cd_bdevsw);
318 	cmaj = cdevsw_lookup_major(&cd_cdevsw);
319 	/* Nuke the vnodes for any open instances */
320 	for (i = 0; i < MAXPARTITIONS; i++) {
321 		mn = CDMINOR(device_unit(self), i);
322 		vdevgone(bmaj, mn, mn, VBLK);
323 		vdevgone(cmaj, mn, mn, VCHR);
324 	}
325 
326 	/* kill any pending restart */
327 	callout_stop(&cd->sc_callout);
328 
329 	s = splbio();
330 
331 	/* Kill off any queued buffers. */
332 	bufq_drain(cd->buf_queue);
333 
334 	bufq_free(cd->buf_queue);
335 
336 	/* Kill off any pending commands. */
337 	scsipi_kill_pending(cd->sc_periph);
338 
339 	splx(s);
340 
341 	mutex_destroy(&cd->sc_lock);
342 
343 	/* Detach from the disk list. */
344 	disk_detach(&cd->sc_dk);
345 	disk_destroy(&cd->sc_dk);
346 
347 	/* Unhook the entropy source. */
348 	rnd_detach_source(&cd->rnd_source);
349 
350 	return (0);
351 }
352 
353 /*
354  * open the device. Make sure the partition info is a up-to-date as can be.
355  */
356 static int
357 cdopen(dev_t dev, int flag, int fmt, struct lwp *l)
358 {
359 	struct cd_softc *cd;
360 	struct scsipi_periph *periph;
361 	struct scsipi_adapter *adapt;
362 	int part;
363 	int error;
364 	int rawpart;
365 
366 	cd = device_lookup_private(&cd_cd, CDUNIT(dev));
367 	if (cd == NULL)
368 		return (ENXIO);
369 
370 	periph = cd->sc_periph;
371 	adapt = periph->periph_channel->chan_adapter;
372 	part = CDPART(dev);
373 
374 	SC_DEBUG(periph, SCSIPI_DB1,
375 	    ("cdopen: dev=0x%"PRIu64" (unit %"PRIu32" (of %d), partition %"PRId32")\n",dev,
376 	    CDUNIT(dev), cd_cd.cd_ndevs, CDPART(dev)));
377 
378 	/*
379 	 * If this is the first open of this device, add a reference
380 	 * to the adapter.
381 	 */
382 	if (cd->sc_dk.dk_openmask == 0 &&
383 	    (error = scsipi_adapter_addref(adapt)) != 0)
384 		return (error);
385 
386 	mutex_enter(&cd->sc_lock);
387 
388 	rawpart = (part == RAW_PART && fmt == S_IFCHR);
389 	if ((periph->periph_flags & PERIPH_OPEN) != 0) {
390 		/*
391 		 * If any partition is open, but the disk has been invalidated,
392 		 * disallow further opens.
393 		 */
394 		if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 &&
395 			!rawpart) {
396 			error = EIO;
397 			goto bad3;
398 		}
399 	} else {
400 		/* Check that it is still responding and ok. */
401 		error = scsipi_test_unit_ready(periph,
402 		    XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE |
403 		    XS_CTL_SILENT);
404 
405 		/*
406 		 * Start the pack spinning if necessary. Always allow the
407 		 * raw parition to be opened, for raw IOCTLs. Data transfers
408 		 * will check for SDEV_MEDIA_LOADED.
409 		 */
410 		if (error == EIO) {
411 			int error2;
412 			int silent;
413 
414 			if (rawpart)
415 				silent = XS_CTL_SILENT;
416 			else
417 				silent = 0;
418 
419 			error2 = scsipi_start(periph, SSS_START, silent);
420 			switch (error2) {
421 			case 0:
422 				error = 0;
423 				break;
424 			case EIO:
425 			case EINVAL:
426 				break;
427 			default:
428 				error = error2;
429 				break;
430 			}
431 		}
432 		if (error) {
433 			if (rawpart)
434 				goto out;
435 			goto bad3;
436 		}
437 
438 		periph->periph_flags |= PERIPH_OPEN;
439 
440 		/* Lock the pack in. */
441 		error = scsipi_prevent(periph, SPAMR_PREVENT_DT,
442 		    XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE);
443 		SC_DEBUG(periph, SCSIPI_DB1,
444 		    ("cdopen: scsipi_prevent, error=%d\n", error));
445 		if (error) {
446 			if (rawpart)
447 				goto out;
448 			goto bad;
449 		}
450 
451 		if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
452 			/* Load the physical device parameters. */
453 			if (cd_get_parms(cd, 0) != 0) {
454 				if (rawpart)
455 					goto out;
456 				error = ENXIO;
457 				goto bad;
458 			}
459 			periph->periph_flags |= PERIPH_MEDIA_LOADED;
460 			SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded "));
461 
462 			/* Fabricate a disk label. */
463 			cdgetdisklabel(cd);
464 			SC_DEBUG(periph, SCSIPI_DB3, ("Disklabel fabricated "));
465 
466 			cd_set_geometry(cd);
467 		}
468 	}
469 
470 	/* Check that the partition exists. */
471 	if (part != RAW_PART &&
472 	    (part >= cd->sc_dk.dk_label->d_npartitions ||
473 	    cd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) {
474 		error = ENXIO;
475 		goto bad;
476 	}
477 
478 out:	/* Insure only one open at a time. */
479 	switch (fmt) {
480 	case S_IFCHR:
481 		cd->sc_dk.dk_copenmask |= (1 << part);
482 		break;
483 	case S_IFBLK:
484 		cd->sc_dk.dk_bopenmask |= (1 << part);
485 		break;
486 	}
487 	cd->sc_dk.dk_openmask =
488 	    cd->sc_dk.dk_copenmask | cd->sc_dk.dk_bopenmask;
489 
490 	SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n"));
491 	mutex_exit(&cd->sc_lock);
492 	return (0);
493 
494 bad:
495 	if (cd->sc_dk.dk_openmask == 0) {
496 		scsipi_prevent(periph, SPAMR_ALLOW,
497 		    XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE);
498 		periph->periph_flags &= ~PERIPH_OPEN;
499 	}
500 
501 bad3:
502 	mutex_exit(&cd->sc_lock);
503 	if (cd->sc_dk.dk_openmask == 0)
504 		scsipi_adapter_delref(adapt);
505 	return (error);
506 }
507 
508 /*
509  * close the device.. only called if we are the LAST
510  * occurence of an open device
511  */
512 static int
513 cdclose(dev_t dev, int flag, int fmt, struct lwp *l)
514 {
515 	struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(dev));
516 	struct scsipi_periph *periph = cd->sc_periph;
517 	struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter;
518 	int part = CDPART(dev);
519 	int silent = 0;
520 
521 	if (part == RAW_PART && ((cd->sc_dk.dk_label->d_npartitions == 0) ||
522 	    (part < cd->sc_dk.dk_label->d_npartitions &&
523 	    cd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)))
524 		silent = XS_CTL_SILENT;
525 
526 	mutex_enter(&cd->sc_lock);
527 
528 	switch (fmt) {
529 	case S_IFCHR:
530 		cd->sc_dk.dk_copenmask &= ~(1 << part);
531 		break;
532 	case S_IFBLK:
533 		cd->sc_dk.dk_bopenmask &= ~(1 << part);
534 		break;
535 	}
536 	cd->sc_dk.dk_openmask =
537 	    cd->sc_dk.dk_copenmask | cd->sc_dk.dk_bopenmask;
538 
539 	if (cd->sc_dk.dk_openmask == 0) {
540 		/* synchronise caches on last close */
541 		cdcachesync(periph, silent);
542 
543 		/* drain outstanding calls */
544 		scsipi_wait_drain(periph);
545 
546 		scsipi_prevent(periph, SPAMR_ALLOW,
547 		    XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE |
548 		    XS_CTL_IGNORE_NOT_READY | silent);
549 		periph->periph_flags &= ~PERIPH_OPEN;
550 
551 		scsipi_wait_drain(periph);
552 
553 		scsipi_adapter_delref(adapt);
554 	}
555 
556 	mutex_exit(&cd->sc_lock);
557 	return (0);
558 }
559 
560 /*
561  * Actually translate the requested transfer into one the physical driver can
562  * understand.  The transfer is described by a buf and will include only one
563  * physical transfer.
564  */
565 static void
566 cdstrategy(struct buf *bp)
567 {
568 	struct cd_softc *cd = device_lookup_private(&cd_cd,CDUNIT(bp->b_dev));
569 	struct disklabel *lp;
570 	struct scsipi_periph *periph = cd->sc_periph;
571 	daddr_t blkno;
572 	int s;
573 
574 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cdstrategy "));
575 	SC_DEBUG(cd->sc_periph, SCSIPI_DB1,
576 	    ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno));
577 	/*
578 	 * If the device has been made invalid, error out
579 	 * maybe the media changed
580 	 */
581 	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
582 		if (periph->periph_flags & PERIPH_OPEN)
583 			bp->b_error = EIO;
584 		else
585 			bp->b_error = ENODEV;
586 		goto done;
587 	}
588 
589 	lp = cd->sc_dk.dk_label;
590 
591 	/*
592 	 * The transfer must be a whole number of blocks, offset must not
593 	 * be negative.
594 	 */
595 	if ((bp->b_bcount % lp->d_secsize) != 0 ||
596 	    bp->b_blkno < 0 ) {
597 		bp->b_error = EINVAL;
598 		goto done;
599 	}
600 	/*
601 	 * If it's a null transfer, return immediately
602 	 */
603 	if (bp->b_bcount == 0)
604 		goto done;
605 
606 	/*
607 	 * Do bounds checking, adjust transfer. if error, process.
608 	 * If end of partition, just return.
609 	 */
610 	if (CDPART(bp->b_dev) == RAW_PART) {
611 		if (bounds_check_with_mediasize(bp, DEV_BSIZE,
612 		    cd->params.disksize512) <= 0)
613 			goto done;
614 	} else {
615 		if (bounds_check_with_label(&cd->sc_dk, bp,
616 		    (cd->flags & (CDF_WLABEL|CDF_LABELLING)) != 0) <= 0)
617 			goto done;
618 	}
619 
620 	/*
621 	 * Now convert the block number to absolute and put it in
622 	 * terms of the device's logical block size.
623 	 */
624 	blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE);
625 	if (CDPART(bp->b_dev) != RAW_PART)
626 		blkno += lp->d_partitions[CDPART(bp->b_dev)].p_offset;
627 
628 	bp->b_rawblkno = blkno;
629 
630 	/*
631 	 * If the disklabel sector size does not match the device
632 	 * sector size we may need to do some extra work.
633 	 */
634 	if (lp->d_secsize != cd->params.blksize) {
635 
636 		/*
637 		 * If the xfer is not a multiple of the device block size
638 		 * or it is not block aligned, we need to bounce it.
639 		 */
640 		if ((bp->b_bcount % cd->params.blksize) != 0 ||
641 			((blkno * lp->d_secsize) % cd->params.blksize) != 0) {
642 			struct cdbounce *bounce;
643 			struct buf *nbp;
644 			long count;
645 
646 			if ((bp->b_flags & B_READ) == 0) {
647 
648 				/* XXXX We don't support bouncing writes. */
649 				bp->b_error = EACCES;
650 				goto done;
651 			}
652 
653 			bounce = malloc(sizeof(*bounce), M_DEVBUF, M_NOWAIT);
654 			if (!bounce) {
655 				/* No memory -- fail the iop. */
656 				bp->b_error = ENOMEM;
657 				goto done;
658 			}
659 
660 			bounce->obp = bp;
661 			bounce->resid = bp->b_bcount;
662 			bounce->doff = 0;
663 			count = ((blkno * lp->d_secsize) % cd->params.blksize);
664 			bounce->soff = count;
665 			count += bp->b_bcount;
666 			count = roundup(count, cd->params.blksize);
667 			bounce->bcount = bounce->resid;
668 			if (count > MAXPHYS) {
669 				bounce->bcount = MAXPHYS - bounce->soff;
670 				count = MAXPHYS;
671 			}
672 
673 			blkno = ((blkno * lp->d_secsize) / cd->params.blksize);
674 			nbp = getiobuf(NULL, false);
675 			if (!nbp) {
676 				/* No memory -- fail the iop. */
677 				free(bounce, M_DEVBUF);
678 				bp->b_error = ENOMEM;
679 				goto done;
680 			}
681 			nbp->b_data = malloc(count, M_DEVBUF, M_NOWAIT);
682 			if (!nbp->b_data) {
683 				/* No memory -- fail the iop. */
684 				free(bounce, M_DEVBUF);
685 				putiobuf(nbp);
686 				bp->b_error = ENOMEM;
687 				goto done;
688 			}
689 
690 			/* Set up the IOP to the bounce buffer. */
691 			nbp->b_error = 0;
692 			nbp->b_proc = bp->b_proc;
693 			nbp->b_bcount = count;
694 			nbp->b_bufsize = count;
695 			nbp->b_rawblkno = blkno;
696 			nbp->b_flags = bp->b_flags | B_READ;
697 			nbp->b_oflags = bp->b_oflags;
698 			nbp->b_cflags = bp->b_cflags;
699 			nbp->b_iodone = cdbounce;
700 
701 			/* store bounce state in b_private and use new buf */
702 			nbp->b_private = bounce;
703 
704 			BIO_COPYPRIO(nbp, bp);
705 
706 			bp = nbp;
707 
708 		} else {
709 			/* Xfer is aligned -- just adjust the start block */
710 			bp->b_rawblkno = (blkno * lp->d_secsize) /
711 				cd->params.blksize;
712 		}
713 	}
714 	s = splbio();
715 
716 	/*
717 	 * Place it in the queue of disk activities for this disk.
718 	 *
719 	 * XXX Only do disksort() if the current operating mode does not
720 	 * XXX include tagged queueing.
721 	 */
722 	bufq_put(cd->buf_queue, bp);
723 
724 	/*
725 	 * Tell the device to get going on the transfer if it's
726 	 * not doing anything, otherwise just wait for completion
727 	 */
728 	cdstart(cd->sc_periph);
729 
730 	splx(s);
731 	return;
732 
733 done:
734 	/*
735 	 * Correctly set the buf to indicate a completed xfer
736 	 */
737 	bp->b_resid = bp->b_bcount;
738 	biodone(bp);
739 }
740 
741 /*
742  * cdstart looks to see if there is a buf waiting for the device
743  * and that the device is not already busy. If both are true,
744  * It deques the buf and creates a scsi command to perform the
745  * transfer in the buf. The transfer request will call scsipi_done
746  * on completion, which will in turn call this routine again
747  * so that the next queued transfer is performed.
748  * The bufs are queued by the strategy routine (cdstrategy)
749  *
750  * This routine is also called after other non-queued requests
751  * have been made of the scsi driver, to ensure that the queue
752  * continues to be drained.
753  *
754  * must be called at the correct (highish) spl level
755  * cdstart() is called at splbio from cdstrategy, cdrestart and scsipi_done
756  */
757 static void
758 cdstart(struct scsipi_periph *periph)
759 {
760 	struct cd_softc *cd = device_private(periph->periph_dev);
761 	struct buf *bp = 0;
762 	struct scsipi_rw_10 cmd_big;
763 	struct scsi_rw_6 cmd_small;
764 	struct scsipi_generic *cmdp;
765 	struct scsipi_xfer *xs;
766 	int flags, nblks, cmdlen, error __diagused;
767 
768 	SC_DEBUG(periph, SCSIPI_DB2, ("cdstart "));
769 	/*
770 	 * Check if the device has room for another command
771 	 */
772 	while (periph->periph_active < periph->periph_openings) {
773 		/*
774 		 * there is excess capacity, but a special waits
775 		 * It'll need the adapter as soon as we clear out of the
776 		 * way and let it run (user level wait).
777 		 */
778 		if (periph->periph_flags & PERIPH_WAITING) {
779 			periph->periph_flags &= ~PERIPH_WAITING;
780 			wakeup((void *)periph);
781 			return;
782 		}
783 
784 		/*
785 		 * If the device has become invalid, abort all the
786 		 * reads and writes until all files have been closed and
787 		 * re-opened
788 		 */
789 		if (__predict_false(
790 		    (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) {
791 			if ((bp = bufq_get(cd->buf_queue)) != NULL) {
792 				bp->b_error = EIO;
793 				bp->b_resid = bp->b_bcount;
794 				biodone(bp);
795 				continue;
796 			} else {
797 				return;
798 			}
799 		}
800 
801 		/*
802 		 * See if there is a buf with work for us to do..
803 		 */
804 		if ((bp = bufq_peek(cd->buf_queue)) == NULL)
805 			return;
806 
807 		/*
808 		 * We have a buf, now we should make a command.
809 		 */
810 
811 		nblks = howmany(bp->b_bcount, cd->params.blksize);
812 
813 		/*
814 		 *  Fill out the scsi command.  If the transfer will
815 		 *  fit in a "small" cdb, use it.
816 		 */
817 		if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) &&
818 		    ((nblks & 0xff) == nblks) &&
819 		    !(periph->periph_quirks & PQUIRK_ONLYBIG)) {
820 			/*
821 			 * We can fit in a small cdb.
822 			 */
823 			memset(&cmd_small, 0, sizeof(cmd_small));
824 			cmd_small.opcode = (bp->b_flags & B_READ) ?
825 			    SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND;
826 			_lto3b(bp->b_rawblkno, cmd_small.addr);
827 			cmd_small.length = nblks & 0xff;
828 			cmdlen = sizeof(cmd_small);
829 			cmdp = (struct scsipi_generic *)&cmd_small;
830 		} else {
831 			/*
832 			 * Need a large cdb.
833 			 */
834 			memset(&cmd_big, 0, sizeof(cmd_big));
835 			cmd_big.opcode = (bp->b_flags & B_READ) ?
836 			    READ_10 : WRITE_10;
837 			_lto4b(bp->b_rawblkno, cmd_big.addr);
838 			_lto2b(nblks, cmd_big.length);
839 			cmdlen = sizeof(cmd_big);
840 			cmdp = (struct scsipi_generic *)&cmd_big;
841 		}
842 
843 		/* Instrumentation. */
844 		disk_busy(&cd->sc_dk);
845 
846 		/*
847 		 * Figure out what flags to use.
848 		 */
849 		flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG;
850 		if (bp->b_flags & B_READ)
851 			flags |= XS_CTL_DATA_IN;
852 		else
853 			flags |= XS_CTL_DATA_OUT;
854 
855 		/*
856 		 * Call the routine that chats with the adapter.
857 		 * Note: we cannot sleep as we may be an interrupt
858 		 */
859 		xs = scsipi_make_xs(periph, cmdp, cmdlen,
860 		    (u_char *)bp->b_data, bp->b_bcount,
861 		    CDRETRIES, 30000, bp, flags);
862 		if (__predict_false(xs == NULL)) {
863 			/*
864 			 * out of memory. Keep this buffer in the queue, and
865 			 * retry later.
866 			 */
867 			callout_reset(&cd->sc_callout, hz / 2, cdrestart,
868 			    periph);
869 			return;
870 		}
871 		/*
872 		 * need to dequeue the buffer before queuing the command,
873 		 * because cdstart may be called recursively from the
874 		 * HBA driver
875 		 */
876 #ifdef DIAGNOSTIC
877 		if (bufq_get(cd->buf_queue) != bp)
878 			panic("cdstart(): dequeued wrong buf");
879 #else
880 		bufq_get(cd->buf_queue);
881 #endif
882 		error = scsipi_execute_xs(xs);
883 		/* with a scsipi_xfer preallocated, scsipi_command can't fail */
884 		KASSERT(error == 0);
885 	}
886 }
887 
888 static void
889 cdrestart(void *v)
890 {
891 	int s = splbio();
892 	cdstart((struct scsipi_periph *)v);
893 	splx(s);
894 }
895 
896 static void
897 cddone(struct scsipi_xfer *xs, int error)
898 {
899 	struct cd_softc *cd = device_private(xs->xs_periph->periph_dev);
900 	struct buf *bp = xs->bp;
901 
902 	if (bp) {
903 		/* note, bp->b_resid is NOT initialised */
904 		bp->b_error = error;
905 		bp->b_resid = xs->resid;
906 		if (error) {
907 			/* on a read/write error bp->b_resid is zero, so fix */
908 			bp->b_resid = bp->b_bcount;
909 		}
910 
911 		disk_unbusy(&cd->sc_dk, bp->b_bcount - bp->b_resid,
912 		    (bp->b_flags & B_READ));
913 		rnd_add_uint32(&cd->rnd_source, bp->b_rawblkno);
914 
915 		biodone(bp);
916 	}
917 }
918 
919 static void
920 cdbounce(struct buf *bp)
921 {
922 	struct cdbounce *bounce = (struct cdbounce *)bp->b_private;
923 	struct buf *obp = bounce->obp;
924 	struct cd_softc *cd =
925 	    device_lookup_private(&cd_cd, CDUNIT(obp->b_dev));
926 	struct disklabel *lp = cd->sc_dk.dk_label;
927 
928 	if (bp->b_error != 0) {
929 		/* EEK propagate the error and free the memory */
930 		goto done;
931 	}
932 
933 	KASSERT(obp->b_flags & B_READ);
934 
935 	/* copy bounce buffer to final destination */
936 	memcpy((char *)obp->b_data + bounce->doff,
937 	    (char *)bp->b_data + bounce->soff, bounce->bcount);
938 
939 	/* check if we need more I/O, i.e. bounce put us over MAXPHYS */
940 	KASSERT(bounce->resid >= bounce->bcount);
941 	bounce->resid -= bounce->bcount;
942 	if (bounce->resid > 0) {
943 		struct buf *nbp;
944 		daddr_t blkno;
945 		long count;
946 		int s;
947 
948 		blkno = obp->b_rawblkno +
949 		    ((obp->b_bcount - bounce->resid) / lp->d_secsize);
950 		count = ((blkno * lp->d_secsize) % cd->params.blksize);
951 		blkno = (blkno * lp->d_secsize) / cd->params.blksize;
952 		bounce->soff = count;
953 		bounce->doff += bounce->bcount;
954 		count += bounce->resid;
955 		count = roundup(count, cd->params.blksize);
956 		bounce->bcount = bounce->resid;
957 		if (count > MAXPHYS) {
958 			bounce->bcount = MAXPHYS - bounce->soff;
959 			count = MAXPHYS;
960 		}
961 
962 		nbp = getiobuf(NULL, false);
963 		if (!nbp) {
964 			/* No memory -- fail the iop. */
965 			bp->b_error = ENOMEM;
966 			goto done;
967 		}
968 
969 		/* Set up the IOP to the bounce buffer. */
970 		nbp->b_error = 0;
971 		nbp->b_proc = obp->b_proc;
972 		nbp->b_bcount = count;
973 		nbp->b_bufsize = count;
974 		nbp->b_data = bp->b_data;
975 		nbp->b_rawblkno = blkno;
976 		nbp->b_flags = obp->b_flags | B_READ;
977 		nbp->b_oflags = obp->b_oflags;
978 		nbp->b_cflags = obp->b_cflags;
979 		nbp->b_iodone = cdbounce;
980 
981 		/* store bounce state in b_private and use new buf */
982 		nbp->b_private = bounce;
983 
984 		BIO_COPYPRIO(nbp, obp);
985 
986 		bp->b_data = NULL;
987 		putiobuf(bp);
988 
989 		/* enqueue the request and return */
990 		s = splbio();
991 		bufq_put(cd->buf_queue, nbp);
992 		cdstart(cd->sc_periph);
993 		splx(s);
994 
995 		return;
996 	}
997 
998 done:
999 	obp->b_error = bp->b_error;
1000 	obp->b_resid = bp->b_resid;
1001 	free(bp->b_data, M_DEVBUF);
1002 	free(bounce, M_DEVBUF);
1003 	bp->b_data = NULL;
1004 	putiobuf(bp);
1005 	biodone(obp);
1006 }
1007 
1008 static int
1009 cd_interpret_sense(struct scsipi_xfer *xs)
1010 {
1011 	struct scsipi_periph *periph = xs->xs_periph;
1012 	struct scsi_sense_data *sense = &xs->sense.scsi_sense;
1013 	int retval = EJUSTRETURN;
1014 
1015 	/*
1016 	 * If it isn't a extended or extended/deferred error, let
1017 	 * the generic code handle it.
1018 	 */
1019 	if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT &&
1020 	    SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED)
1021 		return (retval);
1022 
1023 	/*
1024 	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Logical Unit
1025 	 * Is In The Process of Becoming Ready" (Sense code 0x04,0x01), then
1026 	 * wait a bit for the drive to spin up
1027 	 */
1028 
1029 	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
1030 	    (sense->asc == 0x04) && (sense->ascq == 0x01)) {
1031 		/*
1032 		 * Sleep for 5 seconds to wait for the drive to spin up
1033 		 */
1034 
1035 		SC_DEBUG(periph, SCSIPI_DB1, ("Waiting 5 sec for CD "
1036 						"spinup\n"));
1037 		if (!callout_pending(&periph->periph_callout))
1038 			scsipi_periph_freeze(periph, 1);
1039 		callout_reset(&periph->periph_callout,
1040 		    5 * hz, scsipi_periph_timed_thaw, periph);
1041 		retval = ERESTART;
1042 	}
1043 
1044 	/*
1045 	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Logical Unit Not
1046 	 * Ready, Operation In Progress" (Sense code 0x04, 0x07),
1047 	 * then wait for the specified time
1048 	 */
1049 
1050 	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
1051 	    (sense->asc == 0x04) && (sense->ascq == 0x07)) {
1052 		/*
1053 		 * we could listen to the delay; but it looks like the skey
1054 		 * data is not always returned.
1055 		 */
1056 		/* cd_delay = _2btol(sense->sks.sks_bytes); */
1057 
1058 		/* wait for a half second and get going again */
1059 		if (!callout_pending(&periph->periph_callout))
1060 			scsipi_periph_freeze(periph, 1);
1061 		callout_reset(&periph->periph_callout,
1062 		    hz/2, scsipi_periph_timed_thaw, periph);
1063 		retval = ERESTART;
1064 	}
1065 
1066 	/*
1067 	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Long write in
1068 	 * progress" (Sense code 0x04, 0x08), then wait for the specified
1069 	 * time
1070 	 */
1071 
1072 	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
1073 	    (sense->asc == 0x04) && (sense->ascq == 0x08)) {
1074 		/*
1075 		 * long write in process; we could listen to the delay; but it
1076 		 * looks like the skey data is not always returned.
1077 		 */
1078 		/* cd_delay = _2btol(sense->sks.sks_bytes); */
1079 
1080 		/* wait for a half second and get going again */
1081 		if (!callout_pending(&periph->periph_callout))
1082 			scsipi_periph_freeze(periph, 1);
1083 		callout_reset(&periph->periph_callout,
1084 		    hz/2, scsipi_periph_timed_thaw, periph);
1085 		retval = ERESTART;
1086 	}
1087 
1088 	return (retval);
1089 }
1090 
1091 static void
1092 cdminphys(struct buf *bp)
1093 {
1094 	struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(bp->b_dev));
1095 	long xmax;
1096 
1097 	/*
1098 	 * If the device is ancient, we want to make sure that
1099 	 * the transfer fits into a 6-byte cdb.
1100 	 *
1101 	 * XXX Note that the SCSI-I spec says that 256-block transfers
1102 	 * are allowed in a 6-byte read/write, and are specified
1103 	 * by settng the "length" to 0.  However, we're conservative
1104 	 * here, allowing only 255-block transfers in case an
1105 	 * ancient device gets confused by length == 0.  A length of 0
1106 	 * in a 10-byte read/write actually means 0 blocks.
1107 	 */
1108 	if (cd->flags & CDF_ANCIENT) {
1109 		xmax = cd->sc_dk.dk_label->d_secsize * 0xff;
1110 
1111 		if (bp->b_bcount > xmax)
1112 			bp->b_bcount = xmax;
1113 	}
1114 
1115 	(*cd->sc_periph->periph_channel->chan_adapter->adapt_minphys)(bp);
1116 }
1117 
1118 static int
1119 cdread(dev_t dev, struct uio *uio, int ioflag)
1120 {
1121 	return (physio(cdstrategy, NULL, dev, B_READ, cdminphys, uio));
1122 }
1123 
1124 static int
1125 cdwrite(dev_t dev, struct uio *uio, int ioflag)
1126 {
1127 	return (physio(cdstrategy, NULL, dev, B_WRITE, cdminphys, uio));
1128 }
1129 
1130 #if 0	/* XXX Not used */
1131 /*
1132  * conversion between minute-seconde-frame and logical block address
1133  * addresses format
1134  */
1135 static void
1136 lba2msf(u_long lba, u_char *m, u_char *s, u_char *f)
1137 {
1138 	u_long tmp;
1139 
1140 	tmp = lba + CD_BLOCK_OFFSET;	/* offset of first logical frame */
1141 	tmp &= 0xffffff;		/* negative lbas use only 24 bits */
1142 	*m = tmp / (CD_SECS * CD_FRAMES);
1143 	tmp %= (CD_SECS * CD_FRAMES);
1144 	*s = tmp / CD_FRAMES;
1145 	*f = tmp % CD_FRAMES;
1146 }
1147 #endif /* XXX Not used */
1148 
1149 /*
1150  * Convert an hour:minute:second:frame address to a logical block adres. In
1151  * theory the number of secs/minute and number of frames/second could be
1152  * configured differently in the device  as could the block offset but in
1153  * practice these values are rock solid and most drives don't even allow
1154  * theses values to be changed.
1155  */
1156 static uint32_t
1157 hmsf2lba(uint8_t h, uint8_t m, uint8_t s, uint8_t f)
1158 {
1159 	return (((((uint32_t) h * 60 + m) * CD_SECS) + s) * CD_FRAMES + f)
1160 		- CD_BLOCK_OFFSET;
1161 }
1162 
1163 static int
1164 cdreadmsaddr(struct cd_softc *cd, struct cd_formatted_toc *toc, int *addr)
1165 {
1166 	struct scsipi_periph *periph = cd->sc_periph;
1167 	int error;
1168 	struct cd_toc_entry *cte;
1169 
1170 	error = cd_read_toc(cd, CD_TOC_FORM, 0, 0, toc,
1171 	    sizeof(struct ioc_toc_header) + sizeof(struct cd_toc_entry),
1172 	    0, 0x40 /* control word for "get MS info" */);
1173 
1174 	if (error)
1175 		return (error);
1176 
1177 	cte = &toc->entries[0];
1178 	if (periph->periph_quirks & PQUIRK_LITTLETOC) {
1179 		cte->addr.lba = le32toh(cte->addr.lba);
1180 		toc->header.len = le16toh(toc->header.len);
1181 	} else {
1182 		cte->addr.lba = be32toh(cte->addr.lba);
1183 		toc->header.len = be16toh(toc->header.len);
1184 	}
1185 
1186 	*addr = (toc->header.len >= 10 && cte->track > 1) ?
1187 		cte->addr.lba : 0;
1188 	return 0;
1189 }
1190 
1191 /* synchronise caches code from sd.c, move to scsipi_ioctl.c ? */
1192 static int
1193 cdcachesync(struct scsipi_periph *periph, int flags) {
1194 	struct scsi_synchronize_cache_10 cmd;
1195 
1196 	/*
1197 	 * Issue a SYNCHRONIZE CACHE. MMC devices have to issue with address 0
1198 	 * and length 0 as it can't synchronise parts of the disc per spec.
1199 	 * We ignore ILLEGAL REQUEST in the event that the command is not
1200 	 * supported by the device, and poll for completion so that we know
1201 	 * that the cache has actually been flushed.
1202 	 *
1203 	 * XXX should we handle the PQUIRK_NOSYNCCACHE ?
1204 	 */
1205 
1206 	memset(&cmd, 0, sizeof(cmd));
1207 	cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10;
1208 
1209 	return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0,
1210 	    CDRETRIES, 30000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST));
1211 }
1212 
1213 static int
1214 do_cdioreadentries(struct cd_softc *cd, struct ioc_read_toc_entry *te,
1215     struct cd_formatted_toc *toc)
1216 {
1217 	/* READ TOC format 0 command, entries */
1218 	struct ioc_toc_header *th;
1219 	struct cd_toc_entry *cte;
1220 	u_int len = te->data_len;
1221 	int ntracks;
1222 	int error;
1223 
1224 	th = &toc->header;
1225 
1226 	if (len > sizeof(toc->entries) ||
1227 	    len < sizeof(toc->entries[0]))
1228 		return (EINVAL);
1229 	error = cd_read_toc(cd, CD_TOC_FORM, te->address_format,
1230 	    te->starting_track, toc,
1231 	    sizeof(toc->header) + len,
1232 	    0, 0);
1233 	if (error)
1234 		return (error);
1235 	if (te->address_format == CD_LBA_FORMAT)
1236 		for (ntracks =
1237 		    th->ending_track - th->starting_track + 1;
1238 		    ntracks >= 0; ntracks--) {
1239 			cte = &toc->entries[ntracks];
1240 			cte->addr_type = CD_LBA_FORMAT;
1241 			if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
1242 				cte->addr.lba = le32toh(cte->addr.lba);
1243 			else
1244 				cte->addr.lba = be32toh(cte->addr.lba);
1245 		}
1246 	if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
1247 		th->len = le16toh(th->len);
1248 	else
1249 		th->len = be16toh(th->len);
1250 	return 0;
1251 }
1252 
1253 /*
1254  * Perform special action on behalf of the user.
1255  * Knows about the internals of this device
1256  */
1257 static int
1258 cdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
1259 {
1260 	struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(dev));
1261 	struct scsipi_periph *periph = cd->sc_periph;
1262 	struct cd_formatted_toc toc;
1263 	int part = CDPART(dev);
1264 	int error;
1265 	int s;
1266 #ifdef __HAVE_OLD_DISKLABEL
1267 	struct disklabel *newlabel = NULL;
1268 #endif
1269 
1270 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cdioctl 0x%lx ", cmd));
1271 
1272 	/*
1273 	 * If the device is not valid, some IOCTLs can still be
1274 	 * handled on the raw partition. Check this here.
1275 	 */
1276 	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
1277 		switch (cmd) {
1278 		case DIOCWLABEL:
1279 		case DIOCLOCK:
1280 		case ODIOCEJECT:
1281 		case DIOCEJECT:
1282 		case DIOCCACHESYNC:
1283 		case DIOCTUR:
1284 		case SCIOCIDENTIFY:
1285 		case OSCIOCIDENTIFY:
1286 		case SCIOCCOMMAND:
1287 		case SCIOCDEBUG:
1288 		case CDIOCGETVOL:
1289 		case CDIOCSETVOL:
1290 		case CDIOCSETMONO:
1291 		case CDIOCSETSTEREO:
1292 		case CDIOCSETMUTE:
1293 		case CDIOCSETLEFT:
1294 		case CDIOCSETRIGHT:
1295 		case CDIOCCLOSE:
1296 		case CDIOCEJECT:
1297 		case CDIOCALLOW:
1298 		case CDIOCPREVENT:
1299 		case CDIOCSETDEBUG:
1300 		case CDIOCCLRDEBUG:
1301 		case CDIOCRESET:
1302 		case SCIOCRESET:
1303 		case CDIOCLOADUNLOAD:
1304 		case DVD_AUTH:
1305 		case DVD_READ_STRUCT:
1306 		case DIOCGSTRATEGY:
1307 		case DIOCSSTRATEGY:
1308 			if (part == RAW_PART)
1309 				break;
1310 		/* FALLTHROUGH */
1311 		default:
1312 			if ((periph->periph_flags & PERIPH_OPEN) == 0)
1313 				return (ENODEV);
1314 			else
1315 				return (EIO);
1316 		}
1317 	}
1318 
1319 	error = disk_ioctl(&cd->sc_dk, cmd, addr, flag, l);
1320 	if (error != EPASSTHROUGH)
1321 		return (error);
1322 
1323 	error = 0;
1324 	switch (cmd) {
1325 	case DIOCGDINFO:
1326 		*(struct disklabel *)addr = *(cd->sc_dk.dk_label);
1327 		return (0);
1328 #ifdef __HAVE_OLD_DISKLABEL
1329 	case ODIOCGDINFO:
1330 		newlabel = malloc(sizeof (*newlabel), M_TEMP, M_WAITOK);
1331 		if (newlabel == NULL)
1332 			return (EIO);
1333 		memcpy(newlabel, cd->sc_dk.dk_label, sizeof (*newlabel));
1334 		if (newlabel->d_npartitions > OLDMAXPARTITIONS)
1335 			error = ENOTTY;
1336 		else
1337 			memcpy(addr, newlabel, sizeof (struct olddisklabel));
1338 		free(newlabel, M_TEMP);
1339 		return error;
1340 #endif
1341 
1342 	case DIOCGPART:
1343 		((struct partinfo *)addr)->disklab = cd->sc_dk.dk_label;
1344 		((struct partinfo *)addr)->part =
1345 		    &cd->sc_dk.dk_label->d_partitions[part];
1346 		return (0);
1347 
1348 	case DIOCWDINFO:
1349 	case DIOCSDINFO:
1350 #ifdef __HAVE_OLD_DISKLABEL
1351 	case ODIOCWDINFO:
1352 	case ODIOCSDINFO:
1353 #endif
1354 	{
1355 		struct disklabel *lp;
1356 
1357 		if ((flag & FWRITE) == 0)
1358 			return (EBADF);
1359 
1360 #ifdef __HAVE_OLD_DISKLABEL
1361 		if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) {
1362 			newlabel = malloc(sizeof (*newlabel), M_TEMP,
1363 			    M_WAITOK | M_ZERO);
1364 			if (newlabel == NULL)
1365 				return (EIO);
1366 			memcpy(newlabel, addr, sizeof (struct olddisklabel));
1367 			lp = newlabel;
1368 		} else
1369 #endif
1370 		lp = addr;
1371 
1372 		mutex_enter(&cd->sc_lock);
1373 		cd->flags |= CDF_LABELLING;
1374 
1375 		error = setdisklabel(cd->sc_dk.dk_label,
1376 		    lp, /*cd->sc_dk.dk_openmask : */0,
1377 		    cd->sc_dk.dk_cpulabel);
1378 		if (error == 0) {
1379 			/* XXX ? */
1380 		}
1381 
1382 		cd->flags &= ~CDF_LABELLING;
1383 		mutex_exit(&cd->sc_lock);
1384 #ifdef __HAVE_OLD_DISKLABEL
1385 		if (newlabel != NULL)
1386 			free(newlabel, M_TEMP);
1387 #endif
1388 		return (error);
1389 	}
1390 
1391 	case DIOCWLABEL:
1392 		return (EBADF);
1393 
1394 	case DIOCGDEFLABEL:
1395 		cdgetdefaultlabel(cd, &toc, addr);
1396 		return (0);
1397 
1398 #ifdef __HAVE_OLD_DISKLABEL
1399 	case ODIOCGDEFLABEL:
1400 		newlabel = malloc(sizeof (*newlabel), M_TEMP, M_WAITOK);
1401 		if (newlabel == NULL)
1402 			return (EIO);
1403 		cdgetdefaultlabel(cd, &toc, newlabel);
1404 		if (newlabel->d_npartitions > OLDMAXPARTITIONS)
1405 			error = ENOTTY;
1406 		else
1407 			memcpy(addr, newlabel, sizeof (struct olddisklabel));
1408 		free(newlabel, M_TEMP);
1409 		return error;
1410 #endif
1411 
1412 	case DIOCTUR: {
1413 		/* test unit ready */
1414 		error = scsipi_test_unit_ready(cd->sc_periph, XS_CTL_SILENT);
1415 		*((int*)addr) = (error == 0);
1416 		if (error == ENODEV || error == EIO || error == 0)
1417 			return 0;
1418 		return error;
1419 	}
1420 
1421 	case CDIOCPLAYTRACKS: {
1422 		/* PLAY_MSF command */
1423 		struct ioc_play_track *args = addr;
1424 
1425 		if ((error = cd_set_pa_immed(cd, 0)) != 0)
1426 			return (error);
1427 		return (cd_play_tracks(cd, &toc, args->start_track,
1428 		    args->start_index, args->end_track, args->end_index));
1429 	}
1430 	case CDIOCPLAYMSF: {
1431 		/* PLAY_MSF command */
1432 		struct ioc_play_msf *args = addr;
1433 
1434 		if ((error = cd_set_pa_immed(cd, 0)) != 0)
1435 			return (error);
1436 		return (cd_play_msf(cd, args->start_m, args->start_s,
1437 		    args->start_f, args->end_m, args->end_s, args->end_f));
1438 	}
1439 	case CDIOCPLAYBLOCKS: {
1440 		/* PLAY command */
1441 		struct ioc_play_blocks *args = addr;
1442 
1443 		if ((error = cd_set_pa_immed(cd, 0)) != 0)
1444 			return (error);
1445 		return (cd_play(cd, args->blk, args->len));
1446 	}
1447 	case CDIOCREADSUBCHANNEL: {
1448 		/* READ_SUBCHANNEL command */
1449 		struct ioc_read_subchannel *args = addr;
1450 		struct cd_sub_channel_info data;
1451 		u_int len = args->data_len;
1452 
1453 		if (len > sizeof(data) ||
1454 		    len < sizeof(struct cd_sub_channel_header))
1455 			return (EINVAL);
1456 		error = cd_read_subchannel(cd, args->address_format,
1457 		    args->data_format, args->track, &data, len, 0);
1458 		if (error)
1459 			return (error);
1460 		len = min(len, _2btol(data.header.data_len) +
1461 		    sizeof(struct cd_sub_channel_header));
1462 		return (copyout(&data, args->data, len));
1463 	}
1464 	case CDIOCREADSUBCHANNEL_BUF: {
1465 		/* As CDIOCREADSUBCHANNEL, but without a 2nd buffer area */
1466 		struct ioc_read_subchannel_buf *args = addr;
1467 		if (args->req.data_len != sizeof args->info)
1468 			return EINVAL;
1469 		return cd_read_subchannel(cd, args->req.address_format,
1470 		    args->req.data_format, args->req.track, &args->info,
1471 		    sizeof(args->info), 0);
1472 	}
1473 	case CDIOREADTOCHEADER: {
1474 		/* READ TOC format 0 command, static header */
1475 		if ((error = cd_read_toc(cd, CD_TOC_FORM, 0, 0,
1476 		    &toc, sizeof(toc.header), 0, 0)) != 0)
1477 			return (error);
1478 		if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
1479 			toc.header.len = le16toh(toc.header.len);
1480 		else
1481 			toc.header.len = be16toh(toc.header.len);
1482 		memcpy(addr, &toc.header, sizeof(toc.header));
1483 		return (0);
1484 	}
1485 	case CDIOREADTOCENTRYS: {
1486 		struct ioc_read_toc_entry *te = addr;
1487 		error = do_cdioreadentries(cd, te, &toc);
1488 		if (error != 0)
1489 			return error;
1490 		return copyout(toc.entries, te->data, min(te->data_len,
1491 		    toc.header.len - (sizeof(toc.header.starting_track)
1492 			+ sizeof(toc.header.ending_track))));
1493 	}
1494 	case CDIOREADTOCENTRIES_BUF: {
1495 		struct ioc_read_toc_entry_buf *te = addr;
1496 		error = do_cdioreadentries(cd, &te->req, &toc);
1497 		if (error != 0)
1498 			return error;
1499 		memcpy(te->entry, toc.entries, min(te->req.data_len,
1500 		    toc.header.len - (sizeof(toc.header.starting_track)
1501 			+ sizeof(toc.header.ending_track))));
1502 		return 0;
1503 	}
1504 	case CDIOREADMSADDR: {
1505 		/* READ TOC format 0 command, length of first track only */
1506 		int sessno = *(int*)addr;
1507 
1508 		if (sessno != 0)
1509 			return (EINVAL);
1510 
1511 		return (cdreadmsaddr(cd, &toc, addr));
1512 	}
1513 	case CDIOCSETPATCH: {
1514 		struct ioc_patch *arg = addr;
1515 
1516 		return (cd_setchan(cd, arg->patch[0], arg->patch[1],
1517 		    arg->patch[2], arg->patch[3], 0));
1518 	}
1519 	case CDIOCGETVOL: {
1520 		/* MODE SENSE command (AUDIO page) */
1521 		struct ioc_vol *arg = addr;
1522 
1523 		return (cd_getvol(cd, arg, 0));
1524 	}
1525 	case CDIOCSETVOL: {
1526 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1527 		struct ioc_vol *arg = addr;
1528 
1529 		return (cd_setvol(cd, arg, 0));
1530 	}
1531 	case CDIOCSETMONO:
1532 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1533 		return (cd_setchan(cd, BOTH_CHANNEL, BOTH_CHANNEL,
1534 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
1535 
1536 	case CDIOCSETSTEREO:
1537 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1538 		return (cd_setchan(cd, LEFT_CHANNEL, RIGHT_CHANNEL,
1539 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
1540 
1541 	case CDIOCSETMUTE:
1542 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1543 		return (cd_setchan(cd, MUTE_CHANNEL, MUTE_CHANNEL,
1544 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
1545 
1546 	case CDIOCSETLEFT:
1547 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1548 		return (cd_setchan(cd, LEFT_CHANNEL, LEFT_CHANNEL,
1549 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
1550 
1551 	case CDIOCSETRIGHT:
1552 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1553 		return (cd_setchan(cd, RIGHT_CHANNEL, RIGHT_CHANNEL,
1554 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
1555 
1556 	case CDIOCRESUME:
1557 		/* PAUSE command */
1558 		return (cd_pause(cd, PA_RESUME));
1559 	case CDIOCPAUSE:
1560 		/* PAUSE command */
1561 		return (cd_pause(cd, PA_PAUSE));
1562 	case CDIOCSTART:
1563 		return (scsipi_start(periph, SSS_START, 0));
1564 	case CDIOCSTOP:
1565 		return (scsipi_start(periph, SSS_STOP, 0));
1566 	case CDIOCCLOSE:
1567 		return (scsipi_start(periph, SSS_START|SSS_LOEJ,
1568 		    XS_CTL_IGNORE_NOT_READY | XS_CTL_IGNORE_MEDIA_CHANGE));
1569 	case DIOCEJECT:
1570 		if (*(int *)addr == 0) {
1571 			/*
1572 			 * Don't force eject: check that we are the only
1573 			 * partition open. If so, unlock it.
1574 			 */
1575 			if ((cd->sc_dk.dk_openmask & ~(1 << part)) == 0 &&
1576 			    cd->sc_dk.dk_bopenmask + cd->sc_dk.dk_copenmask ==
1577 			    cd->sc_dk.dk_openmask) {
1578 				error = scsipi_prevent(periph, SPAMR_ALLOW,
1579 				    XS_CTL_IGNORE_NOT_READY);
1580 				if (error)
1581 					return (error);
1582 			} else {
1583 				return (EBUSY);
1584 			}
1585 		}
1586 		/* FALLTHROUGH */
1587 	case CDIOCEJECT: /* FALLTHROUGH */
1588 	case ODIOCEJECT:
1589 		error = scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0);
1590 		if (error == 0) {
1591 			int i;
1592 
1593 			/*
1594 			 * We have just successfully ejected the medium,
1595 			 * all partitions cached are meaningless now.
1596 			 * Make sure cdclose() will do silent operations
1597 			 * now by marking all partitions unused.
1598 			 * Before any real access, a new (default-)disk-
1599 			 * label will be generated anyway.
1600 			 */
1601 			for (i = 0; i < cd->sc_dk.dk_label->d_npartitions;
1602 			    i++)
1603 				cd->sc_dk.dk_label->d_partitions[i].p_fstype =
1604 					FS_UNUSED;
1605 		}
1606 		return error;
1607 	case DIOCCACHESYNC:
1608 		/* SYNCHRONISE CACHES command */
1609 		return (cdcachesync(periph, 0));
1610 	case CDIOCALLOW:
1611 		return (scsipi_prevent(periph, SPAMR_ALLOW, 0));
1612 	case CDIOCPREVENT:
1613 		return (scsipi_prevent(periph, SPAMR_PREVENT_DT, 0));
1614 	case DIOCLOCK:
1615 		return (scsipi_prevent(periph,
1616 		    (*(int *)addr) ? SPAMR_PREVENT_DT : SPAMR_ALLOW, 0));
1617 	case CDIOCSETDEBUG:
1618 		cd->sc_periph->periph_dbflags |= (SCSIPI_DB1 | SCSIPI_DB2);
1619 		return (0);
1620 	case CDIOCCLRDEBUG:
1621 		cd->sc_periph->periph_dbflags &= ~(SCSIPI_DB1 | SCSIPI_DB2);
1622 		return (0);
1623 	case CDIOCRESET:
1624 	case SCIOCRESET:
1625 		return (cd_reset(cd));
1626 	case CDIOCLOADUNLOAD:
1627 		/* LOAD_UNLOAD command */
1628 		return (cd_load_unload(cd, addr));
1629 	case DVD_AUTH:
1630 		/* GPCMD_REPORT_KEY or GPCMD_SEND_KEY command */
1631 		return (dvd_auth(cd, addr));
1632 	case DVD_READ_STRUCT:
1633 		/* GPCMD_READ_DVD_STRUCTURE command */
1634 		return (dvd_read_struct(cd, addr));
1635 	case MMCGETDISCINFO:
1636 		/*
1637 		 * GET_CONFIGURATION, READ_DISCINFO, READ_TRACKINFO,
1638 		 * (READ_TOCf2, READ_CD_CAPACITY and GET_CONFIGURATION) commands
1639 		 */
1640 		return mmc_getdiscinfo(periph, (struct mmc_discinfo *) addr);
1641 	case MMCGETTRACKINFO:
1642 		/* READ TOCf2, READ_CD_CAPACITY and READ_TRACKINFO commands */
1643 		return mmc_gettrackinfo(periph, (struct mmc_trackinfo *) addr);
1644 	case MMCOP:
1645 		/*
1646 		 * CLOSE TRACK/SESSION, RESERVE_TRACK, REPAIR_TRACK,
1647 		 * SYNCHRONISE_CACHE commands
1648 		 */
1649 		return mmc_do_op(periph, (struct mmc_op *) addr);
1650 	case MMCSETUPWRITEPARAMS :
1651 		/* MODE SENSE page 5, MODE_SELECT page 5 commands */
1652 		return mmc_setup_writeparams(periph, (struct mmc_writeparams *) addr);
1653 	case DIOCGSTRATEGY:
1654 	    {
1655 		struct disk_strategy *dks = addr;
1656 
1657 		s = splbio();
1658 		strlcpy(dks->dks_name, bufq_getstrategyname(cd->buf_queue),
1659 		    sizeof(dks->dks_name));
1660 		splx(s);
1661 		dks->dks_paramlen = 0;
1662 
1663 		return 0;
1664 	    }
1665 	case DIOCSSTRATEGY:
1666 	    {
1667 		struct disk_strategy *dks = addr;
1668 		struct bufq_state *new;
1669 		struct bufq_state *old;
1670 
1671 		if ((flag & FWRITE) == 0) {
1672 			return EBADF;
1673 		}
1674 		if (dks->dks_param != NULL) {
1675 			return EINVAL;
1676 		}
1677 		dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */
1678 		error = bufq_alloc(&new, dks->dks_name,
1679 		    BUFQ_EXACT|BUFQ_SORT_RAWBLOCK);
1680 		if (error) {
1681 			return error;
1682 		}
1683 		s = splbio();
1684 		old = cd->buf_queue;
1685 		bufq_move(new, old);
1686 		cd->buf_queue = new;
1687 		splx(s);
1688 		bufq_free(old);
1689 
1690 		return 0;
1691 	    }
1692 	default:
1693 		if (part != RAW_PART)
1694 			return (ENOTTY);
1695 		return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l));
1696 	}
1697 
1698 #ifdef DIAGNOSTIC
1699 	panic("cdioctl: impossible");
1700 #endif
1701 }
1702 
1703 static void
1704 cdgetdefaultlabel(struct cd_softc *cd, struct cd_formatted_toc *toc,
1705     struct disklabel *lp)
1706 {
1707 	int lastsession;
1708 
1709 	memset(lp, 0, sizeof(struct disklabel));
1710 
1711 	lp->d_secsize = cd->params.blksize;
1712 	lp->d_ntracks = 1;
1713 	lp->d_nsectors = 100;
1714 	lp->d_ncylinders = (cd->params.disksize / 100) + 1;
1715 	lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors;
1716 
1717 	switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(cd->sc_periph))) {
1718 	case SCSIPI_BUSTYPE_SCSI:
1719 		lp->d_type = DTYPE_SCSI;
1720 		break;
1721 	case SCSIPI_BUSTYPE_ATAPI:
1722 		lp->d_type = DTYPE_ATAPI;
1723 		break;
1724 	}
1725 	/*
1726 	 * XXX
1727 	 * We could probe the mode pages to figure out what kind of disc it is.
1728 	 * Is this worthwhile?
1729 	 */
1730 	strncpy(lp->d_typename, "optical media", 16);
1731 	strncpy(lp->d_packname, "fictitious", 16);
1732 	lp->d_secperunit = cd->params.disksize;
1733 	lp->d_rpm = 300;
1734 	lp->d_interleave = 1;
1735 	lp->d_flags = D_REMOVABLE | D_SCSI_MMC;
1736 
1737 	if (cdreadmsaddr(cd, toc, &lastsession) != 0)
1738 		lastsession = 0;
1739 
1740 	lp->d_partitions[0].p_offset = 0;
1741 	lp->d_partitions[0].p_size = lp->d_secperunit;
1742 	lp->d_partitions[0].p_cdsession = lastsession;
1743 	lp->d_partitions[0].p_fstype = FS_ISO9660;
1744 
1745 	lp->d_partitions[RAW_PART].p_offset = 0;
1746 	lp->d_partitions[RAW_PART].p_size = lp->d_secperunit;
1747 	lp->d_partitions[RAW_PART].p_fstype = FS_UDF;
1748 
1749 	lp->d_npartitions = RAW_PART + 1;
1750 
1751 	lp->d_magic = DISKMAGIC;
1752 	lp->d_magic2 = DISKMAGIC;
1753 	lp->d_checksum = dkcksum(lp);
1754 }
1755 
1756 /*
1757  * Load the label information on the named device
1758  * Actually fabricate a disklabel
1759  *
1760  * EVENTUALLY take information about different
1761  * data tracks from the TOC and put it in the disklabel
1762  */
1763 static void
1764 cdgetdisklabel(struct cd_softc *cd)
1765 {
1766 	struct disklabel *lp = cd->sc_dk.dk_label;
1767 	struct cd_formatted_toc toc;
1768 	const char *errstring;
1769 	int bmajor;
1770 
1771 	memset(cd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel));
1772 
1773 	cdgetdefaultlabel(cd, &toc, lp);
1774 
1775 	/*
1776 	 * Call the generic disklabel extraction routine
1777 	 *
1778 	 * bmajor follows ata_raid code
1779 	 */
1780 	bmajor = devsw_name2blk(device_xname(cd->sc_dev), NULL, 0);
1781 	errstring = readdisklabel(MAKECDDEV(bmajor,
1782 	    device_unit(cd->sc_dev), RAW_PART),
1783 	    cdstrategy, lp, cd->sc_dk.dk_cpulabel);
1784 
1785 	/* if all went OK, we are passed a NULL error string */
1786 	if (errstring == NULL)
1787 		return;
1788 
1789 	/* Reset to default label -- after printing error and the warning */
1790 	aprint_error_dev(cd->sc_dev, "%s\n", errstring);
1791 	memset(cd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel));
1792 	cdgetdefaultlabel(cd, &toc, lp);
1793 }
1794 
1795 /*
1796  * Reading a disc's total capacity is apparently a very difficult issue for the
1797  * SCSI standardisation group. Every disc type seems to have its own
1798  * (re)invented size request method and modifiers. The failsafe way of
1799  * determining the total (max) capacity i.e. not the recorded capacity but the
1800  * total maximum capacity is to request the info on the last track and
1801  * calculate the last lba.
1802  *
1803  * For ROM drives, we go for the CD recorded capacity. For recordable devices
1804  * we count.
1805  */
1806 static int
1807 read_cd_capacity(struct scsipi_periph *periph, u_int *blksize, u_long *last_lba)
1808 {
1809 	struct scsipi_read_cd_capacity    cap_cmd;
1810 	/*
1811 	 * XXX: see PR 48550 and PR 48754:
1812 	 * the ahcisata(4) driver can not deal with unaligned
1813 	 * data, so align this "a bit"
1814 	 */
1815 	struct scsipi_read_cd_cap_data    cap __aligned(2);
1816 	struct scsipi_read_discinfo       di_cmd;
1817 	struct scsipi_read_discinfo_data  di;
1818 	struct scsipi_read_trackinfo      ti_cmd;
1819 	struct scsipi_read_trackinfo_data ti;
1820 	uint32_t track_start, track_size;
1821 	int error, flags, msb, lsb, last_track;
1822 
1823 	/* if the device doesn't grok capacity, return the dummies */
1824 	if (periph->periph_quirks & PQUIRK_NOCAPACITY)
1825 		return 0;
1826 
1827 	/* first try read CD capacity for blksize and last recorded lba */
1828 	/* issue the cd capacity request */
1829 	flags = XS_CTL_DATA_IN;
1830 	memset(&cap_cmd, 0, sizeof(cap_cmd));
1831 	memset(&cap, 0, sizeof(cap));
1832 	cap_cmd.opcode = READ_CD_CAPACITY;
1833 
1834 	error = scsipi_command(periph,
1835 	    (void *) &cap_cmd, sizeof(cap_cmd),
1836 	    (void *) &cap,     sizeof(cap),
1837 	    CDRETRIES, 30000, NULL, flags);
1838 	if (error)
1839 		return error;
1840 
1841 	/* retrieve values and sanity check them */
1842 	*blksize  = _4btol(cap.length);
1843 	*last_lba = _4btol(cap.addr);
1844 
1845 	/* blksize is 2048 for CD, but some drives give gibberish */
1846 	if ((*blksize < 512) || ((*blksize & 511) != 0)
1847 	    || (*blksize > 16*1024)) {
1848 		if (*blksize > 16*1024)
1849 			aprint_error("read_cd_capacity: extra large block "
1850 			    "size %u found - limiting to 2kByte\n",
1851 			    *blksize);
1852 		*blksize = 2048;	/* some drives lie ! */
1853 	}
1854 
1855 	/* recordables have READ_DISCINFO implemented */
1856 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
1857 	memset(&di_cmd, 0, sizeof(di_cmd));
1858 	di_cmd.opcode = READ_DISCINFO;
1859 	_lto2b(READ_DISCINFO_BIGSIZE, di_cmd.data_len);
1860 
1861 	error = scsipi_command(periph,
1862 	    (void *) &di_cmd,  sizeof(di_cmd),
1863 	    (void *) &di,      READ_DISCINFO_BIGSIZE,
1864 	    CDRETRIES, 30000, NULL, flags);
1865 	if (error == 0) {
1866 		msb = di.last_track_last_session_msb;
1867 		lsb = di.last_track_last_session_lsb;
1868 		last_track = (msb << 8) | lsb;
1869 
1870 		/* request info on last track */
1871 		memset(&ti_cmd, 0, sizeof(ti_cmd));
1872 		ti_cmd.opcode = READ_TRACKINFO;
1873 		ti_cmd.addr_type = 1;			/* on tracknr */
1874 		_lto4b(last_track, ti_cmd.address);	/* tracknr    */
1875 		_lto2b(sizeof(ti), ti_cmd.data_len);
1876 
1877 		error = scsipi_command(periph,
1878 		    (void *) &ti_cmd,  sizeof(ti_cmd),
1879 		    (void *) &ti,      sizeof(ti),
1880 		    CDRETRIES, 30000, NULL, flags);
1881 		if (error == 0) {
1882 			track_start = _4btol(ti.track_start);
1883 			track_size  = _4btol(ti.track_size);
1884 
1885 			/* overwrite only with a sane value */
1886 			if (track_start + track_size >= 100)
1887 				*last_lba = (u_long) track_start + track_size -1;
1888 		}
1889 	}
1890 
1891 	/* sanity check for lba_size */
1892 	if (*last_lba < 100)
1893 		*last_lba = 400000-1;
1894 
1895 	return 0;
1896 }
1897 
1898 /*
1899  * Find out from the device what it's capacity is
1900  */
1901 static u_long
1902 cd_size(struct cd_softc *cd, int flags)
1903 {
1904 	u_int blksize = 2048;
1905 	u_long last_lba = 0, size;
1906 	int error;
1907 
1908 	error = read_cd_capacity(cd->sc_periph, &blksize, &last_lba);
1909 	if (error)
1910 		goto error;
1911 
1912 	if (blksize != 2048) {
1913 		if (cd_setblksize(cd) == 0) {
1914 			blksize = 2048;
1915 			error = read_cd_capacity(cd->sc_periph,
1916 			    &blksize, &last_lba);
1917 			if (error)
1918 				goto error;
1919 		}
1920 	}
1921 
1922 	size = last_lba + 1;
1923 	cd->params.blksize     = blksize;
1924 	cd->params.disksize    = size;
1925 	cd->params.disksize512 = ((u_int64_t)cd->params.disksize * blksize) / DEV_BSIZE;
1926 
1927 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2,
1928 	    ("cd_size: %u %lu\n", blksize, size));
1929 
1930 	return size;
1931 
1932 error:
1933 	/* something went wrong */
1934 	cd->params.blksize     = 2048;
1935 	cd->params.disksize    = 0;
1936 	cd->params.disksize512 = 0;
1937 
1938 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cd_size: failed\n"));
1939 
1940 	return 0;
1941 }
1942 
1943 /*
1944  * Get scsi driver to send a "start playing" command
1945  */
1946 static int
1947 cd_play(struct cd_softc *cd, int blkno, int nblks)
1948 {
1949 	struct scsipi_play cmd;
1950 
1951 	memset(&cmd, 0, sizeof(cmd));
1952 	cmd.opcode = PLAY;
1953 	_lto4b(blkno, cmd.blk_addr);
1954 	_lto2b(nblks, cmd.xfer_len);
1955 
1956 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
1957 	    CDRETRIES, 30000, NULL, 0));
1958 }
1959 
1960 /*
1961  * Get scsi driver to send a "start playing" command
1962  */
1963 static int
1964 cd_play_tracks(struct cd_softc *cd, struct cd_formatted_toc *toc, int strack,
1965     int sindex, int etrack, int eindex)
1966 {
1967 	int error;
1968 
1969 	if (!etrack)
1970 		return (EIO);
1971 	if (strack > etrack)
1972 		return (EINVAL);
1973 
1974 	error = cd_load_toc(cd, CD_TOC_FORM, toc, 0);
1975 	if (error)
1976 		return (error);
1977 
1978 	if (++etrack > (toc->header.ending_track+1))
1979 		etrack = toc->header.ending_track+1;
1980 
1981 	strack -= toc->header.starting_track;
1982 	etrack -= toc->header.starting_track;
1983 	if (strack < 0)
1984 		return (EINVAL);
1985 
1986 	return (cd_play_msf(cd, toc->entries[strack].addr.msf.minute,
1987 	    toc->entries[strack].addr.msf.second,
1988 	    toc->entries[strack].addr.msf.frame,
1989 	    toc->entries[etrack].addr.msf.minute,
1990 	    toc->entries[etrack].addr.msf.second,
1991 	    toc->entries[etrack].addr.msf.frame));
1992 }
1993 
1994 /*
1995  * Get scsi driver to send a "play msf" command
1996  */
1997 static int
1998 cd_play_msf(struct cd_softc *cd, int startm, int starts, int startf, int endm,
1999     int ends, int endf)
2000 {
2001 	struct scsipi_play_msf cmd;
2002 
2003 	memset(&cmd, 0, sizeof(cmd));
2004 	cmd.opcode = PLAY_MSF;
2005 	cmd.start_m = startm;
2006 	cmd.start_s = starts;
2007 	cmd.start_f = startf;
2008 	cmd.end_m = endm;
2009 	cmd.end_s = ends;
2010 	cmd.end_f = endf;
2011 
2012 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
2013 	    CDRETRIES, 30000, NULL, 0));
2014 }
2015 
2016 /*
2017  * Get scsi driver to send a "start up" command
2018  */
2019 static int
2020 cd_pause(struct cd_softc *cd, int go)
2021 {
2022 	struct scsipi_pause cmd;
2023 
2024 	memset(&cmd, 0, sizeof(cmd));
2025 	cmd.opcode = PAUSE;
2026 	cmd.resume = go & 0xff;
2027 
2028 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
2029 	    CDRETRIES, 30000, NULL, 0));
2030 }
2031 
2032 /*
2033  * Get scsi driver to send a "RESET" command
2034  */
2035 static int
2036 cd_reset(struct cd_softc *cd)
2037 {
2038 
2039 	return (scsipi_command(cd->sc_periph, 0, 0, 0, 0,
2040 	    CDRETRIES, 30000, NULL, XS_CTL_RESET));
2041 }
2042 
2043 /*
2044  * Read subchannel
2045  */
2046 static int
2047 cd_read_subchannel(struct cd_softc *cd, int mode, int format, int track,
2048     struct cd_sub_channel_info *data, int len, int flags)
2049 {
2050 	struct scsipi_read_subchannel cmd;
2051 
2052 	memset(&cmd, 0, sizeof(cmd));
2053 	cmd.opcode = READ_SUBCHANNEL;
2054 	if (mode == CD_MSF_FORMAT)
2055 		cmd.byte2 |= CD_MSF;
2056 	cmd.byte3 = SRS_SUBQ;
2057 	cmd.subchan_format = format;
2058 	cmd.track = track;
2059 	_lto2b(len, cmd.data_len);
2060 
2061 	return (scsipi_command(cd->sc_periph,
2062 	    (void *)&cmd, sizeof(struct scsipi_read_subchannel),
2063 	    (void *)data, len,
2064 	    CDRETRIES, 30000, NULL, flags | XS_CTL_DATA_IN | XS_CTL_SILENT));
2065 }
2066 
2067 /*
2068  * Read table of contents
2069  */
2070 static int
2071 cd_read_toc(struct cd_softc *cd, int respf, int mode, int start,
2072     struct cd_formatted_toc *toc, int len, int flags, int control)
2073 {
2074 	struct scsipi_read_toc cmd;
2075 	int ntoc;
2076 
2077 	memset(&cmd, 0, sizeof(cmd));
2078 #if 0
2079 	if (len != sizeof(struct ioc_toc_header))
2080 		ntoc = ((len) - sizeof(struct ioc_toc_header)) /
2081 		    sizeof(struct cd_toc_entry);
2082 	else
2083 #endif
2084 	ntoc = len;
2085 	cmd.opcode = READ_TOC;
2086 	if (mode == CD_MSF_FORMAT)
2087 		cmd.addr_mode |= CD_MSF;
2088 	cmd.resp_format = respf;
2089 	cmd.from_track = start;
2090 	_lto2b(ntoc, cmd.data_len);
2091 	cmd.control = control;
2092 
2093 	return (scsipi_command(cd->sc_periph,
2094 	    (void *)&cmd, sizeof(cmd), (void *)toc, len, CDRETRIES,
2095 	    30000, NULL, flags | XS_CTL_DATA_IN));
2096 }
2097 
2098 static int
2099 cd_load_toc(struct cd_softc *cd, int respf, struct cd_formatted_toc *toc, int flags)
2100 {
2101 	int ntracks, len, error;
2102 
2103 	if ((error = cd_read_toc(cd, respf, 0, 0, toc, sizeof(toc->header),
2104 	    flags, 0)) != 0)
2105 		return (error);
2106 
2107 	ntracks = toc->header.ending_track - toc->header.starting_track + 1;
2108 	len = (ntracks + 1) * sizeof(struct cd_toc_entry) +
2109 	    sizeof(toc->header);
2110 	if ((error = cd_read_toc(cd, respf, CD_MSF_FORMAT, 0, toc, len,
2111 	    flags, 0)) != 0)
2112 		return (error);
2113 	return (0);
2114 }
2115 
2116 /*
2117  * Get the scsi driver to send a full inquiry to the device and use the
2118  * results to fill out the disk parameter structure.
2119  */
2120 static int
2121 cd_get_parms(struct cd_softc *cd, int flags)
2122 {
2123 
2124 	/*
2125 	 * give a number of sectors so that sec * trks * cyls
2126 	 * is <= disk_size
2127 	 */
2128 	if (cd_size(cd, flags) == 0)
2129 		return (ENXIO);
2130 	disk_blocksize(&cd->sc_dk, cd->params.blksize);
2131 	return (0);
2132 }
2133 
2134 static int
2135 cdsize(dev_t dev)
2136 {
2137 
2138 	/* CD-ROMs are read-only. */
2139 	return (-1);
2140 }
2141 
2142 static int
2143 cddump(dev_t dev, daddr_t blkno, void *va, size_t size)
2144 {
2145 
2146 	/* Not implemented. */
2147 	return (ENXIO);
2148 }
2149 
2150 #define	dvd_copy_key(dst, src)		memcpy((dst), (src), sizeof(dvd_key))
2151 #define	dvd_copy_challenge(dst, src)	memcpy((dst), (src), sizeof(dvd_challenge))
2152 
2153 static int
2154 dvd_auth(struct cd_softc *cd, dvd_authinfo *a)
2155 {
2156 	struct scsipi_generic cmd;
2157 	u_int8_t bf[20];
2158 	int error;
2159 
2160 	memset(cmd.bytes, 0, 15);
2161 	memset(bf, 0, sizeof(bf));
2162 
2163 	switch (a->type) {
2164 	case DVD_LU_SEND_AGID:
2165 		cmd.opcode = GPCMD_REPORT_KEY;
2166 		cmd.bytes[8] = 8;
2167 		cmd.bytes[9] = 0 | (0 << 6);
2168 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
2169 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2170 		if (error)
2171 			return (error);
2172 		a->lsa.agid = bf[7] >> 6;
2173 		return (0);
2174 
2175 	case DVD_LU_SEND_CHALLENGE:
2176 		cmd.opcode = GPCMD_REPORT_KEY;
2177 		cmd.bytes[8] = 16;
2178 		cmd.bytes[9] = 1 | (a->lsc.agid << 6);
2179 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
2180 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2181 		if (error)
2182 			return (error);
2183 		dvd_copy_challenge(a->lsc.chal, &bf[4]);
2184 		return (0);
2185 
2186 	case DVD_LU_SEND_KEY1:
2187 		cmd.opcode = GPCMD_REPORT_KEY;
2188 		cmd.bytes[8] = 12;
2189 		cmd.bytes[9] = 2 | (a->lsk.agid << 6);
2190 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
2191 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2192 		if (error)
2193 			return (error);
2194 		dvd_copy_key(a->lsk.key, &bf[4]);
2195 		return (0);
2196 
2197 	case DVD_LU_SEND_TITLE_KEY:
2198 		cmd.opcode = GPCMD_REPORT_KEY;
2199 		_lto4b(a->lstk.lba, &cmd.bytes[1]);
2200 		cmd.bytes[8] = 12;
2201 		cmd.bytes[9] = 4 | (a->lstk.agid << 6);
2202 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
2203 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2204 		if (error)
2205 			return (error);
2206 		a->lstk.cpm = (bf[4] >> 7) & 1;
2207 		a->lstk.cp_sec = (bf[4] >> 6) & 1;
2208 		a->lstk.cgms = (bf[4] >> 4) & 3;
2209 		dvd_copy_key(a->lstk.title_key, &bf[5]);
2210 		return (0);
2211 
2212 	case DVD_LU_SEND_ASF:
2213 		cmd.opcode = GPCMD_REPORT_KEY;
2214 		cmd.bytes[8] = 8;
2215 		cmd.bytes[9] = 5 | (a->lsasf.agid << 6);
2216 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
2217 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2218 		if (error)
2219 			return (error);
2220 		a->lsasf.asf = bf[7] & 1;
2221 		return (0);
2222 
2223 	case DVD_HOST_SEND_CHALLENGE:
2224 		cmd.opcode = GPCMD_SEND_KEY;
2225 		cmd.bytes[8] = 16;
2226 		cmd.bytes[9] = 1 | (a->hsc.agid << 6);
2227 		bf[1] = 14;
2228 		dvd_copy_challenge(&bf[4], a->hsc.chal);
2229 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
2230 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
2231 		if (error)
2232 			return (error);
2233 		a->type = DVD_LU_SEND_KEY1;
2234 		return (0);
2235 
2236 	case DVD_HOST_SEND_KEY2:
2237 		cmd.opcode = GPCMD_SEND_KEY;
2238 		cmd.bytes[8] = 12;
2239 		cmd.bytes[9] = 3 | (a->hsk.agid << 6);
2240 		bf[1] = 10;
2241 		dvd_copy_key(&bf[4], a->hsk.key);
2242 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
2243 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
2244 		if (error) {
2245 			a->type = DVD_AUTH_FAILURE;
2246 			return (error);
2247 		}
2248 		a->type = DVD_AUTH_ESTABLISHED;
2249 		return (0);
2250 
2251 	case DVD_INVALIDATE_AGID:
2252 		cmd.opcode = GPCMD_REPORT_KEY;
2253 		cmd.bytes[9] = 0x3f | (a->lsa.agid << 6);
2254 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
2255 		    CDRETRIES, 30000, NULL, 0);
2256 		if (error)
2257 			return (error);
2258 		return (0);
2259 
2260 	case DVD_LU_SEND_RPC_STATE:
2261 		cmd.opcode = GPCMD_REPORT_KEY;
2262 		cmd.bytes[8] = 8;
2263 		cmd.bytes[9] = 8 | (0 << 6);
2264 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
2265 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2266 		if (error)
2267 			return (error);
2268 		a->lrpcs.type = (bf[4] >> 6) & 3;
2269 		a->lrpcs.vra = (bf[4] >> 3) & 7;
2270 		a->lrpcs.ucca = (bf[4]) & 7;
2271 		a->lrpcs.region_mask = bf[5];
2272 		a->lrpcs.rpc_scheme = bf[6];
2273 		return (0);
2274 
2275 	case DVD_HOST_SEND_RPC_STATE:
2276 		cmd.opcode = GPCMD_SEND_KEY;
2277 		cmd.bytes[8] = 8;
2278 		cmd.bytes[9] = 6 | (0 << 6);
2279 		bf[1] = 6;
2280 		bf[4] = a->hrpcs.pdrc;
2281 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
2282 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
2283 		if (error)
2284 			return (error);
2285 		return (0);
2286 
2287 	default:
2288 		return (ENOTTY);
2289 	}
2290 }
2291 
2292 static int
2293 dvd_read_physical(struct cd_softc *cd, dvd_struct *s)
2294 {
2295 	struct scsipi_generic cmd;
2296 	u_int8_t bf[4 + 4 * 20], *bufp;
2297 	int error;
2298 	struct dvd_layer *layer;
2299 	int i;
2300 
2301 	memset(cmd.bytes, 0, 15);
2302 	memset(bf, 0, sizeof(bf));
2303 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
2304 	cmd.bytes[6] = s->type;
2305 	_lto2b(sizeof(bf), &cmd.bytes[7]);
2306 
2307 	cmd.bytes[5] = s->physical.layer_num;
2308 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
2309 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2310 	if (error)
2311 		return (error);
2312 	for (i = 0, bufp = &bf[4], layer = &s->physical.layer[0]; i < 4;
2313 	     i++, bufp += 20, layer++) {
2314 		memset(layer, 0, sizeof(*layer));
2315                 layer->book_version = bufp[0] & 0xf;
2316                 layer->book_type = bufp[0] >> 4;
2317                 layer->min_rate = bufp[1] & 0xf;
2318                 layer->disc_size = bufp[1] >> 4;
2319                 layer->layer_type = bufp[2] & 0xf;
2320                 layer->track_path = (bufp[2] >> 4) & 1;
2321                 layer->nlayers = (bufp[2] >> 5) & 3;
2322                 layer->track_density = bufp[3] & 0xf;
2323                 layer->linear_density = bufp[3] >> 4;
2324                 layer->start_sector = _4btol(&bufp[4]);
2325                 layer->end_sector = _4btol(&bufp[8]);
2326                 layer->end_sector_l0 = _4btol(&bufp[12]);
2327                 layer->bca = bufp[16] >> 7;
2328 	}
2329 	return (0);
2330 }
2331 
2332 static int
2333 dvd_read_copyright(struct cd_softc *cd, dvd_struct *s)
2334 {
2335 	struct scsipi_generic cmd;
2336 	u_int8_t bf[8];
2337 	int error;
2338 
2339 	memset(cmd.bytes, 0, 15);
2340 	memset(bf, 0, sizeof(bf));
2341 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
2342 	cmd.bytes[6] = s->type;
2343 	_lto2b(sizeof(bf), &cmd.bytes[7]);
2344 
2345 	cmd.bytes[5] = s->copyright.layer_num;
2346 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
2347 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2348 	if (error)
2349 		return (error);
2350 	s->copyright.cpst = bf[4];
2351 	s->copyright.rmi = bf[5];
2352 	return (0);
2353 }
2354 
2355 static int
2356 dvd_read_disckey(struct cd_softc *cd, dvd_struct *s)
2357 {
2358 	struct scsipi_generic cmd;
2359 	u_int8_t *bf;
2360 	int error;
2361 
2362 	bf = malloc(4 + 2048, M_TEMP, M_WAITOK|M_ZERO);
2363 	if (bf == NULL)
2364 		return EIO;
2365 	memset(cmd.bytes, 0, 15);
2366 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
2367 	cmd.bytes[6] = s->type;
2368 	_lto2b(4 + 2048, &cmd.bytes[7]);
2369 
2370 	cmd.bytes[9] = s->disckey.agid << 6;
2371 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 4 + 2048,
2372 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2373 	if (error == 0)
2374 		memcpy(s->disckey.value, &bf[4], 2048);
2375 	free(bf, M_TEMP);
2376 	return error;
2377 }
2378 
2379 static int
2380 dvd_read_bca(struct cd_softc *cd, dvd_struct *s)
2381 {
2382 	struct scsipi_generic cmd;
2383 	u_int8_t bf[4 + 188];
2384 	int error;
2385 
2386 	memset(cmd.bytes, 0, 15);
2387 	memset(bf, 0, sizeof(bf));
2388 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
2389 	cmd.bytes[6] = s->type;
2390 	_lto2b(sizeof(bf), &cmd.bytes[7]);
2391 
2392 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
2393 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2394 	if (error)
2395 		return (error);
2396 	s->bca.len = _2btol(&bf[0]);
2397 	if (s->bca.len < 12 || s->bca.len > 188)
2398 		return (EIO);
2399 	memcpy(s->bca.value, &bf[4], s->bca.len);
2400 	return (0);
2401 }
2402 
2403 static int
2404 dvd_read_manufact(struct cd_softc *cd, dvd_struct *s)
2405 {
2406 	struct scsipi_generic cmd;
2407 	u_int8_t *bf;
2408 	int error;
2409 
2410 	bf = malloc(4 + 2048, M_TEMP, M_WAITOK|M_ZERO);
2411 	if (bf == NULL)
2412 		return (EIO);
2413 	memset(cmd.bytes, 0, 15);
2414 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
2415 	cmd.bytes[6] = s->type;
2416 	_lto2b(4 + 2048, &cmd.bytes[7]);
2417 
2418 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 4 + 2048,
2419 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2420 	if (error == 0) {
2421 		s->manufact.len = _2btol(&bf[0]);
2422 		if (s->manufact.len >= 0 && s->manufact.len <= 2048)
2423 			memcpy(s->manufact.value, &bf[4], s->manufact.len);
2424 		else
2425 			error = EIO;
2426 	}
2427 	free(bf, M_TEMP);
2428 	return error;
2429 }
2430 
2431 static int
2432 dvd_read_struct(struct cd_softc *cd, dvd_struct *s)
2433 {
2434 
2435 	switch (s->type) {
2436 	case DVD_STRUCT_PHYSICAL:
2437 		return (dvd_read_physical(cd, s));
2438 	case DVD_STRUCT_COPYRIGHT:
2439 		return (dvd_read_copyright(cd, s));
2440 	case DVD_STRUCT_DISCKEY:
2441 		return (dvd_read_disckey(cd, s));
2442 	case DVD_STRUCT_BCA:
2443 		return (dvd_read_bca(cd, s));
2444 	case DVD_STRUCT_MANUFACT:
2445 		return (dvd_read_manufact(cd, s));
2446 	default:
2447 		return (EINVAL);
2448 	}
2449 }
2450 
2451 static int
2452 cd_mode_sense(struct cd_softc *cd, u_int8_t byte2, void *sense, size_t size,
2453     int page, int flags, int *big)
2454 {
2455 
2456 	if (cd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) {
2457 		*big = 1;
2458 		return scsipi_mode_sense_big(cd->sc_periph, byte2, page, sense,
2459 		    size + sizeof(struct scsi_mode_parameter_header_10),
2460 		    flags, CDRETRIES, 20000);
2461 	} else {
2462 		*big = 0;
2463 		return scsipi_mode_sense(cd->sc_periph, byte2, page, sense,
2464 		    size + sizeof(struct scsi_mode_parameter_header_6),
2465 		    flags, CDRETRIES, 20000);
2466 	}
2467 }
2468 
2469 static int
2470 cd_mode_select(struct cd_softc *cd, u_int8_t byte2, void *sense, size_t size,
2471     int flags, int big)
2472 {
2473 
2474 	if (big) {
2475 		struct scsi_mode_parameter_header_10 *header = sense;
2476 
2477 		_lto2b(0, header->data_length);
2478 		return scsipi_mode_select_big(cd->sc_periph, byte2, sense,
2479 		    size + sizeof(struct scsi_mode_parameter_header_10),
2480 		    flags, CDRETRIES, 20000);
2481 	} else {
2482 		struct scsi_mode_parameter_header_6 *header = sense;
2483 
2484 		header->data_length = 0;
2485 		return scsipi_mode_select(cd->sc_periph, byte2, sense,
2486 		    size + sizeof(struct scsi_mode_parameter_header_6),
2487 		    flags, CDRETRIES, 20000);
2488 	}
2489 }
2490 
2491 static int
2492 cd_set_pa_immed(struct cd_softc *cd, int flags)
2493 {
2494 	struct {
2495 		union {
2496 			struct scsi_mode_parameter_header_6 small;
2497 			struct scsi_mode_parameter_header_10 big;
2498 		} header;
2499 		struct cd_audio_page page;
2500 	} data;
2501 	int error;
2502 	uint8_t oflags;
2503 	int big, byte2;
2504 	struct cd_audio_page *page;
2505 
2506 	byte2 = SMS_DBD;
2507 try_again:
2508 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
2509 	    AUDIO_PAGE, flags, &big)) != 0) {
2510 		if (byte2 == SMS_DBD) {
2511 			/* Device may not understand DBD; retry without */
2512 			byte2 = 0;
2513 			goto try_again;
2514 		}
2515 		return (error);
2516 	}
2517 
2518 	if (big)
2519 		page = (void *)((u_long)&data.header.big +
2520 				sizeof data.header.big +
2521 				_2btol(data.header.big.blk_desc_len));
2522 	else
2523 		page = (void *)((u_long)&data.header.small +
2524 				sizeof data.header.small +
2525 				data.header.small.blk_desc_len);
2526 
2527 	oflags = page->flags;
2528 	page->flags &= ~CD_PA_SOTC;
2529 	page->flags |= CD_PA_IMMED;
2530 	if (oflags == page->flags)
2531 		return (0);
2532 
2533 	return (cd_mode_select(cd, SMS_PF, &data,
2534 	    sizeof(struct scsi_mode_page_header) + page->pg_length,
2535 	    flags, big));
2536 }
2537 
2538 static int
2539 cd_setchan(struct cd_softc *cd, int p0, int p1, int p2, int p3, int flags)
2540 {
2541 	struct {
2542 		union {
2543 			struct scsi_mode_parameter_header_6 small;
2544 			struct scsi_mode_parameter_header_10 big;
2545 		} header;
2546 		struct cd_audio_page page;
2547 	} data;
2548 	int error;
2549 	int big, byte2;
2550 	struct cd_audio_page *page;
2551 
2552 	byte2 = SMS_DBD;
2553 try_again:
2554 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
2555 	    AUDIO_PAGE, flags, &big)) != 0) {
2556 		if (byte2 == SMS_DBD) {
2557 			/* Device may not understand DBD; retry without */
2558 			byte2 = 0;
2559 			goto try_again;
2560 		}
2561 		return (error);
2562 	}
2563 
2564 	if (big)
2565 		page = (void *)((u_long)&data.header.big +
2566 				sizeof data.header.big +
2567 				_2btol(data.header.big.blk_desc_len));
2568 	else
2569 		page = (void *)((u_long)&data.header.small +
2570 				sizeof data.header.small +
2571 				data.header.small.blk_desc_len);
2572 
2573 	page->port[0].channels = p0;
2574 	page->port[1].channels = p1;
2575 	page->port[2].channels = p2;
2576 	page->port[3].channels = p3;
2577 
2578 	return (cd_mode_select(cd, SMS_PF, &data,
2579 	    sizeof(struct scsi_mode_page_header) + page->pg_length,
2580 	    flags, big));
2581 }
2582 
2583 static int
2584 cd_getvol(struct cd_softc *cd, struct ioc_vol *arg, int flags)
2585 {
2586 	struct {
2587 		union {
2588 			struct scsi_mode_parameter_header_6 small;
2589 			struct scsi_mode_parameter_header_10 big;
2590 		} header;
2591 		struct cd_audio_page page;
2592 	} data;
2593 	int error;
2594 	int big, byte2;
2595 	struct cd_audio_page *page;
2596 
2597 	byte2 = SMS_DBD;
2598 try_again:
2599 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
2600 	    AUDIO_PAGE, flags, &big)) != 0) {
2601 		if (byte2 == SMS_DBD) {
2602 			/* Device may not understand DBD; retry without */
2603 			byte2 = 0;
2604 			goto try_again;
2605 		}
2606 		return (error);
2607 	}
2608 
2609 	if (big)
2610 		page = (void *)((u_long)&data.header.big +
2611 				sizeof data.header.big +
2612 				_2btol(data.header.big.blk_desc_len));
2613 	else
2614 		page = (void *)((u_long)&data.header.small +
2615 				sizeof data.header.small +
2616 				data.header.small.blk_desc_len);
2617 
2618 	arg->vol[0] = page->port[0].volume;
2619 	arg->vol[1] = page->port[1].volume;
2620 	arg->vol[2] = page->port[2].volume;
2621 	arg->vol[3] = page->port[3].volume;
2622 
2623 	return (0);
2624 }
2625 
2626 static int
2627 cd_setvol(struct cd_softc *cd, const struct ioc_vol *arg, int flags)
2628 {
2629 	struct {
2630 		union {
2631 			struct scsi_mode_parameter_header_6 small;
2632 			struct scsi_mode_parameter_header_10 big;
2633 		} header;
2634 		struct cd_audio_page page;
2635 	} data, mask;
2636 	int error;
2637 	int big, byte2;
2638 	struct cd_audio_page *page, *page2;
2639 
2640 	byte2 = SMS_DBD;
2641 try_again:
2642 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
2643 	    AUDIO_PAGE, flags, &big)) != 0) {
2644 		if (byte2 == SMS_DBD) {
2645 			/* Device may not understand DBD; retry without */
2646 			byte2 = 0;
2647 			goto try_again;
2648 		}
2649 		return (error);
2650 	}
2651 	if ((error = cd_mode_sense(cd, byte2, &mask, sizeof(mask.page),
2652 	    AUDIO_PAGE|SMS_PCTRL_CHANGEABLE, flags, &big)) != 0)
2653 		return (error);
2654 
2655 	if (big) {
2656 		page = (void *)((u_long)&data.header.big +
2657 				sizeof data.header.big +
2658 				_2btol(data.header.big.blk_desc_len));
2659 		page2 = (void *)((u_long)&mask.header.big +
2660 				sizeof mask.header.big +
2661 				_2btol(mask.header.big.blk_desc_len));
2662 	} else {
2663 		page = (void *)((u_long)&data.header.small +
2664 				sizeof data.header.small +
2665 				data.header.small.blk_desc_len);
2666 		page2 = (void *)((u_long)&mask.header.small +
2667 				sizeof mask.header.small +
2668 				mask.header.small.blk_desc_len);
2669 	}
2670 
2671 	page->port[0].volume = arg->vol[0] & page2->port[0].volume;
2672 	page->port[1].volume = arg->vol[1] & page2->port[1].volume;
2673 	page->port[2].volume = arg->vol[2] & page2->port[2].volume;
2674 	page->port[3].volume = arg->vol[3] & page2->port[3].volume;
2675 
2676 	page->port[0].channels = CHANNEL_0;
2677 	page->port[1].channels = CHANNEL_1;
2678 
2679 	return (cd_mode_select(cd, SMS_PF, &data,
2680 	    sizeof(struct scsi_mode_page_header) + page->pg_length,
2681 	    flags, big));
2682 }
2683 
2684 static int
2685 cd_load_unload(struct cd_softc *cd, struct ioc_load_unload *args)
2686 {
2687 	struct scsipi_load_unload cmd;
2688 
2689 	memset(&cmd, 0, sizeof(cmd));
2690 	cmd.opcode = LOAD_UNLOAD;
2691 	cmd.options = args->options;    /* ioctl uses MMC values */
2692 	cmd.slot = args->slot;
2693 
2694 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
2695 	    CDRETRIES, 200000, NULL, 0));
2696 }
2697 
2698 static int
2699 cd_setblksize(struct cd_softc *cd)
2700 {
2701 	struct {
2702 		union {
2703 			struct scsi_mode_parameter_header_6 small;
2704 			struct scsi_mode_parameter_header_10 big;
2705 		} header;
2706 		struct scsi_general_block_descriptor blk_desc;
2707 	} data;
2708 	int error;
2709 	int big, bsize;
2710 	struct scsi_general_block_descriptor *bdesc;
2711 
2712 	if ((error = cd_mode_sense(cd, 0, &data, sizeof(data.blk_desc), 0, 0,
2713 	    &big)) != 0)
2714 		return (error);
2715 
2716 	if (big) {
2717 		bdesc = (void *)(&data.header.big + 1);
2718 		bsize = _2btol(data.header.big.blk_desc_len);
2719 	} else {
2720 		bdesc = (void *)(&data.header.small + 1);
2721 		bsize = data.header.small.blk_desc_len;
2722 	}
2723 
2724 	if (bsize == 0) {
2725 printf("cd_setblksize: trying to change bsize, but no blk_desc\n");
2726 		return (EINVAL);
2727 	}
2728 	if (_3btol(bdesc->blklen) == 2048) {
2729 printf("cd_setblksize: trying to change bsize, but blk_desc is correct\n");
2730 		return (EINVAL);
2731 	}
2732 
2733 	_lto3b(2048, bdesc->blklen);
2734 
2735 	return (cd_mode_select(cd, SMS_PF, &data, sizeof(data.blk_desc), 0,
2736 	    big));
2737 }
2738 
2739 
2740 static int
2741 mmc_profile2class(uint16_t mmc_profile)
2742 {
2743 	switch (mmc_profile) {
2744 	case 0x01 : /* SCSI discs */
2745 	case 0x02 :
2746 		/* this can't happen really, cd.c wouldn't have matched */
2747 		return MMC_CLASS_DISC;
2748 	case 0x03 : /* Magneto Optical with sector erase */
2749 	case 0x04 : /* Magneto Optical write once        */
2750 	case 0x05 : /* Advance Storage Magneto Optical   */
2751 		return MMC_CLASS_MO;
2752 	case 0x00 : /* Unknown MMC profile, can also be CD-ROM */
2753 	case 0x08 : /* CD-ROM  */
2754 	case 0x09 : /* CD-R    */
2755 	case 0x0a : /* CD-RW   */
2756 		return MMC_CLASS_CD;
2757 	case 0x10 : /* DVD-ROM */
2758 	case 0x11 : /* DVD-R   */
2759 	case 0x12 : /* DVD-RAM */
2760 	case 0x13 : /* DVD-RW restricted overwrite */
2761 	case 0x14 : /* DVD-RW sequential */
2762 	case 0x1a : /* DVD+RW  */
2763 	case 0x1b : /* DVD+R   */
2764 	case 0x2a : /* DVD+RW Dual layer */
2765 	case 0x2b : /* DVD+R Dual layer */
2766 	case 0x50 : /* HD DVD-ROM */
2767 	case 0x51 : /* HD DVD-R   */
2768 	case 0x52 : /* HD DVD-RW; DVD-RAM like */
2769 		return MMC_CLASS_DVD;
2770 	case 0x40 : /* BD-ROM  */
2771 	case 0x41 : /* BD-R Sequential recording (SRM) */
2772 	case 0x42 : /* BD-R Ramdom Recording (RRM) */
2773 	case 0x43 : /* BD-RE */
2774 		return MMC_CLASS_BD;
2775 	}
2776 	return MMC_CLASS_UNKN;
2777 }
2778 
2779 
2780 /*
2781  * Drive/media combination is reflected in a series of features that can
2782  * either be current or dormant. We try to make sense out of them to create a
2783  * set of easy to use flags that abstract the device/media capabilities.
2784  */
2785 
2786 static void
2787 mmc_process_feature(struct mmc_discinfo *mmc_discinfo,
2788 		    uint16_t feature, int cur, uint8_t *rpos)
2789 {
2790 	uint32_t blockingnr;
2791 	uint64_t flags;
2792 
2793 	if (cur == 1) {
2794 		flags = mmc_discinfo->mmc_cur;
2795 	} else {
2796 		flags = mmc_discinfo->mmc_cap;
2797 	}
2798 
2799 	switch (feature) {
2800 	case 0x0010 :	/* random readable feature */
2801 		blockingnr  =  rpos[5] | (rpos[4] << 8);
2802 		if (blockingnr > 1)
2803 			flags |= MMC_CAP_PACKET;
2804 
2805 		/* RW error page */
2806 		break;
2807 	case 0x0020 :	/* random writable feature */
2808 		flags |= MMC_CAP_RECORDABLE;
2809 		flags |= MMC_CAP_REWRITABLE;
2810 		blockingnr  =  rpos[9] | (rpos[8] << 8);
2811 		if (blockingnr > 1)
2812 			flags |= MMC_CAP_PACKET;
2813 		break;
2814 	case 0x0021 :	/* incremental streaming write feature */
2815 		flags |= MMC_CAP_RECORDABLE;
2816 		flags |= MMC_CAP_SEQUENTIAL;
2817 		if (cur)
2818 			mmc_discinfo->link_block_penalty = rpos[4];
2819 		if (rpos[2] & 1)
2820 			flags |= MMC_CAP_ZEROLINKBLK;
2821 		break;
2822 	case 0x0022 : 	/* (obsolete) erase support feature */
2823 		flags |= MMC_CAP_RECORDABLE;
2824 		flags |= MMC_CAP_ERASABLE;
2825 		break;
2826 	case 0x0023 :	/* formatting media support feature */
2827 		flags |= MMC_CAP_RECORDABLE;
2828 		flags |= MMC_CAP_FORMATTABLE;
2829 		break;
2830 	case 0x0024 :	/* hardware assised defect management feature */
2831 		flags |= MMC_CAP_HW_DEFECTFREE;
2832 		break;
2833 	case 0x0025 : 	/* write once */
2834 		flags |= MMC_CAP_RECORDABLE;
2835 		break;
2836 	case 0x0026 :	/* restricted overwrite feature */
2837 		flags |= MMC_CAP_RECORDABLE;
2838 		flags |= MMC_CAP_REWRITABLE;
2839 		flags |= MMC_CAP_STRICTOVERWRITE;
2840 		break;
2841 	case 0x0028 :	/* MRW formatted media support feature */
2842 		flags |= MMC_CAP_MRW;
2843 		break;
2844 	case 0x002b :	/* DVD+R read (and opt. write) support */
2845 		flags |= MMC_CAP_SEQUENTIAL;
2846 		if (rpos[0] & 1) /* write support */
2847 			flags |= MMC_CAP_RECORDABLE;
2848 		break;
2849 	case 0x002c :	/* rigid restricted overwrite feature */
2850 		flags |= MMC_CAP_RECORDABLE;
2851 		flags |= MMC_CAP_REWRITABLE;
2852 		flags |= MMC_CAP_STRICTOVERWRITE;
2853 		if (rpos[0] & 1) /* blank bit */
2854 			flags |= MMC_CAP_BLANKABLE;
2855 		break;
2856 	case 0x002d :	/* track at once recording feature */
2857 		flags |= MMC_CAP_RECORDABLE;
2858 		flags |= MMC_CAP_SEQUENTIAL;
2859 		break;
2860 	case 0x002f :	/* DVD-R/-RW write feature */
2861 		flags |= MMC_CAP_RECORDABLE;
2862 		if (rpos[0] & 2) /* DVD-RW bit */
2863 			flags |= MMC_CAP_BLANKABLE;
2864 		break;
2865 	case 0x0038 :	/* BD-R SRM with pseudo overwrite */
2866 		flags |= MMC_CAP_PSEUDOOVERWRITE;
2867 		break;
2868 	default :
2869 		/* ignore */
2870 		break;
2871 	}
2872 
2873 	if (cur == 1) {
2874 		mmc_discinfo->mmc_cur = flags;
2875 	} else {
2876 		mmc_discinfo->mmc_cap = flags;
2877 	}
2878 }
2879 
2880 static int
2881 mmc_getdiscinfo_cdrom(struct scsipi_periph *periph,
2882 		      struct mmc_discinfo *mmc_discinfo)
2883 {
2884 	struct scsipi_read_toc      gtoc_cmd;
2885 	struct scsipi_toc_header   *toc_hdr;
2886 	struct scsipi_toc_msinfo   *toc_msinfo;
2887 	const uint32_t buffer_size = 1024;
2888 	uint32_t req_size;
2889 	uint8_t  *buffer;
2890 	int error, flags;
2891 
2892 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
2893 	/*
2894 	 * Fabricate mmc_discinfo for CD-ROM. Some values are really `dont
2895 	 * care' but others might be of interest to programs.
2896 	 */
2897 
2898 	mmc_discinfo->disc_state	 = MMC_STATE_FULL;
2899 	mmc_discinfo->last_session_state = MMC_STATE_FULL;
2900 	mmc_discinfo->bg_format_state    = MMC_BGFSTATE_COMPLETED;
2901 	mmc_discinfo->link_block_penalty = 7;	/* not relevant */
2902 
2903 	/* get number of sessions and first tracknr in last session */
2904 	flags = XS_CTL_DATA_IN;
2905 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
2906 	gtoc_cmd.opcode      = READ_TOC;
2907 	gtoc_cmd.addr_mode   = CD_MSF;		/* not relevant        */
2908 	gtoc_cmd.resp_format = CD_TOC_MSINFO;	/* multisession info   */
2909 	gtoc_cmd.from_track  = 0;		/* reserved, must be 0 */
2910 	req_size = sizeof(*toc_hdr) + sizeof(*toc_msinfo);
2911 	_lto2b(req_size, gtoc_cmd.data_len);
2912 
2913 	error = scsipi_command(periph,
2914 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
2915 		(void *)buffer,    req_size,
2916 		CDRETRIES, 30000, NULL, flags);
2917 	if (error)
2918 		goto out;
2919 	toc_hdr    = (struct scsipi_toc_header *)  buffer;
2920 	toc_msinfo = (struct scsipi_toc_msinfo *) (buffer + 4);
2921 	mmc_discinfo->num_sessions = toc_hdr->last - toc_hdr->first + 1;
2922 	mmc_discinfo->first_track  = toc_hdr->first;
2923 	mmc_discinfo->first_track_last_session = toc_msinfo->tracknr;
2924 
2925 	/* get last track of last session */
2926 	flags = XS_CTL_DATA_IN;
2927 	gtoc_cmd.resp_format  = CD_TOC_FORM;	/* formatted toc */
2928 	req_size = sizeof(*toc_hdr);
2929 	_lto2b(req_size, gtoc_cmd.data_len);
2930 
2931 	error = scsipi_command(periph,
2932 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
2933 		(void *)buffer,    req_size,
2934 		CDRETRIES, 30000, NULL, flags);
2935 	if (error)
2936 		goto out;
2937 	toc_hdr    = (struct scsipi_toc_header *) buffer;
2938 	mmc_discinfo->last_track_last_session = toc_hdr->last;
2939 	mmc_discinfo->num_tracks = toc_hdr->last - toc_hdr->first + 1;
2940 
2941 	/* TODO how to handle disc_barcode and disc_id */
2942 	/* done */
2943 
2944 out:
2945 	free(buffer, M_TEMP);
2946 	return error;
2947 }
2948 
2949 static int
2950 mmc_getdiscinfo_dvdrom(struct scsipi_periph *periph,
2951 		       struct mmc_discinfo *mmc_discinfo)
2952 {
2953 	struct scsipi_read_toc   gtoc_cmd;
2954 	struct scsipi_toc_header toc_hdr;
2955 	uint32_t req_size;
2956 	int error, flags;
2957 
2958 	/*
2959 	 * Fabricate mmc_discinfo for DVD-ROM. Some values are really `dont
2960 	 * care' but others might be of interest to programs.
2961 	 */
2962 
2963 	mmc_discinfo->disc_state	 = MMC_STATE_FULL;
2964 	mmc_discinfo->last_session_state = MMC_STATE_FULL;
2965 	mmc_discinfo->bg_format_state    = MMC_BGFSTATE_COMPLETED;
2966 	mmc_discinfo->link_block_penalty = 16;	/* not relevant */
2967 
2968 	/* get number of sessions and first tracknr in last session */
2969 	flags = XS_CTL_DATA_IN;
2970 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
2971 	gtoc_cmd.opcode      = READ_TOC;
2972 	gtoc_cmd.addr_mode   = 0;		/* LBA                 */
2973 	gtoc_cmd.resp_format = CD_TOC_FORM;	/* multisession info   */
2974 	gtoc_cmd.from_track  = 1;		/* first track         */
2975 	req_size = sizeof(toc_hdr);
2976 	_lto2b(req_size, gtoc_cmd.data_len);
2977 
2978 	error = scsipi_command(periph,
2979 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
2980 		(void *)&toc_hdr,  req_size,
2981 		CDRETRIES, 30000, NULL, flags);
2982 	if (error)
2983 		return error;
2984 
2985 	/* DVD-ROM squashes the track/session space */
2986 	mmc_discinfo->num_sessions = toc_hdr.last - toc_hdr.first + 1;
2987 	mmc_discinfo->num_tracks   = mmc_discinfo->num_sessions;
2988 	mmc_discinfo->first_track  = toc_hdr.first;
2989 	mmc_discinfo->first_track_last_session = toc_hdr.last;
2990 	mmc_discinfo->last_track_last_session  = toc_hdr.last;
2991 
2992 	/* TODO how to handle disc_barcode and disc_id */
2993 	/* done */
2994 	return 0;
2995 }
2996 
2997 static int
2998 mmc_getdiscinfo(struct scsipi_periph *periph,
2999 		struct mmc_discinfo *mmc_discinfo)
3000 {
3001 	struct scsipi_get_configuration   gc_cmd;
3002 	struct scsipi_get_conf_data      *gc;
3003 	struct scsipi_get_conf_feature   *gcf;
3004 	struct scsipi_read_discinfo       di_cmd;
3005 	struct scsipi_read_discinfo_data  di;
3006 	const uint32_t buffer_size = 1024;
3007 	uint32_t feat_tbl_len, pos;
3008 	u_long   last_lba = 0;
3009 	uint8_t  *buffer, *fpos;
3010 	int feature, last_feature, features_len, feature_cur, feature_len;
3011 	int lsb, msb, error, flags;
3012 
3013 	feat_tbl_len = buffer_size;
3014 
3015 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
3016 
3017 	/* initialise structure */
3018 	memset(mmc_discinfo, 0, sizeof(struct mmc_discinfo));
3019 	mmc_discinfo->mmc_profile = 0x00;	/* unknown */
3020 	mmc_discinfo->mmc_class   = MMC_CLASS_UNKN;
3021 	mmc_discinfo->mmc_cur     = 0;
3022 	mmc_discinfo->mmc_cap     = 0;
3023 	mmc_discinfo->link_block_penalty = 0;
3024 
3025 	/* determine mmc profile and class */
3026 	flags = XS_CTL_DATA_IN;
3027 	memset(&gc_cmd, 0, sizeof(gc_cmd));
3028 	gc_cmd.opcode = GET_CONFIGURATION;
3029 	_lto2b(GET_CONF_NO_FEATURES_LEN, gc_cmd.data_len);
3030 
3031 	gc = (struct scsipi_get_conf_data *) buffer;
3032 
3033 	error = scsipi_command(periph,
3034 		(void *)&gc_cmd, sizeof(gc_cmd),
3035 		(void *) gc,     GET_CONF_NO_FEATURES_LEN,
3036 		CDRETRIES, 30000, NULL, flags);
3037 	if (error)
3038 		goto out;
3039 
3040 	mmc_discinfo->mmc_profile = _2btol(gc->mmc_profile);
3041 	mmc_discinfo->mmc_class = mmc_profile2class(mmc_discinfo->mmc_profile);
3042 
3043 	/* assume 2048 sector size unless told otherwise */
3044 	mmc_discinfo->sector_size = 2048;
3045 	error = read_cd_capacity(periph, &mmc_discinfo->sector_size, &last_lba);
3046 	if (error)
3047 		goto out;
3048 
3049 	mmc_discinfo->last_possible_lba = (uint32_t) last_lba;
3050 
3051 	/* Read in all features to determine device capabilities */
3052 	last_feature = feature = 0;
3053 	do {
3054 		/* determine mmc profile and class */
3055 		flags = XS_CTL_DATA_IN;
3056 		memset(&gc_cmd, 0, sizeof(gc_cmd));
3057 		gc_cmd.opcode = GET_CONFIGURATION;
3058 		_lto2b(last_feature, gc_cmd.start_at_feature);
3059 		_lto2b(feat_tbl_len, gc_cmd.data_len);
3060 		memset(gc, 0, feat_tbl_len);
3061 
3062 		error = scsipi_command(periph,
3063 			(void *)&gc_cmd, sizeof(gc_cmd),
3064 			(void *) gc,     feat_tbl_len,
3065 			CDRETRIES, 30000, NULL, flags);
3066 		if (error) {
3067 			/* ieeek... break out of loop... i dunno what to do */
3068 			break;
3069 		}
3070 
3071 		features_len = _4btol(gc->data_len);
3072 		if (features_len < 4 || features_len > feat_tbl_len)
3073 			break;
3074 
3075 		pos  = 0;
3076 		fpos = &gc->feature_desc[0];
3077 		while (pos < features_len - 4) {
3078 			gcf = (struct scsipi_get_conf_feature *) fpos;
3079 
3080 			feature     = _2btol(gcf->featurecode);
3081 			feature_cur = gcf->flags & 1;
3082 			feature_len = gcf->additional_length;
3083 
3084 			mmc_process_feature(mmc_discinfo,
3085 					    feature, feature_cur,
3086 					    gcf->feature_dependent);
3087 
3088 			last_feature = MAX(last_feature, feature);
3089 #ifdef DIAGNOSTIC
3090 			/* assert((feature_len & 3) == 0); */
3091 			if ((feature_len & 3) != 0) {
3092 				printf("feature %d having length %d\n",
3093 					feature, feature_len);
3094 			}
3095 #endif
3096 
3097 			pos  += 4 + feature_len;
3098 			fpos += 4 + feature_len;
3099 		}
3100 		/* unlikely to ever grow past our 1kb buffer */
3101 	} while (features_len >= 0xffff);
3102 
3103 	/*
3104 	 * Fixup CD-RW drives that are on crack.
3105 	 *
3106 	 * Some drives report the capability to incrementally write
3107 	 * sequentially on CD-R(W) media...  nice, but this should not be
3108 	 * active for a fixed packet formatted CD-RW media. Other report the
3109 	 * ability of HW_DEFECTFREE even when the media is NOT MRW
3110 	 * formatted....
3111 	 */
3112 	if (mmc_discinfo->mmc_profile == 0x0a) {
3113 		if ((mmc_discinfo->mmc_cur & MMC_CAP_SEQUENTIAL) == 0)
3114 			mmc_discinfo->mmc_cur |= MMC_CAP_STRICTOVERWRITE;
3115 		if (mmc_discinfo->mmc_cur & MMC_CAP_STRICTOVERWRITE)
3116 			mmc_discinfo->mmc_cur &= ~MMC_CAP_SEQUENTIAL;
3117 		if (mmc_discinfo->mmc_cur & MMC_CAP_MRW) {
3118 			mmc_discinfo->mmc_cur &= ~MMC_CAP_SEQUENTIAL;
3119 			mmc_discinfo->mmc_cur &= ~MMC_CAP_STRICTOVERWRITE;
3120 		} else {
3121 			mmc_discinfo->mmc_cur &= ~MMC_CAP_HW_DEFECTFREE;
3122 		}
3123 	}
3124 	if (mmc_discinfo->mmc_profile == 0x09) {
3125 		mmc_discinfo->mmc_cur &= ~MMC_CAP_REWRITABLE;
3126 	}
3127 
3128 #ifdef DEBUG
3129 	printf("CD mmc %d, mmc_cur 0x%"PRIx64", mmc_cap 0x%"PRIx64"\n",
3130 		mmc_discinfo->mmc_profile,
3131 	 	mmc_discinfo->mmc_cur, mmc_discinfo->mmc_cap);
3132 #endif
3133 
3134 	/* read in disc state and number of sessions and tracks */
3135 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
3136 	memset(&di_cmd, 0, sizeof(di_cmd));
3137 	di_cmd.opcode = READ_DISCINFO;
3138 	di_cmd.data_len[1] = READ_DISCINFO_BIGSIZE;
3139 
3140 	error = scsipi_command(periph,
3141 		(void *)&di_cmd, sizeof(di_cmd),
3142 		(void *)&di,     READ_DISCINFO_BIGSIZE,
3143 		CDRETRIES, 30000, NULL, flags);
3144 
3145 	if (error) {
3146 		/* discinfo call failed, emulate for cd-rom/dvd-rom */
3147 		if (mmc_discinfo->mmc_profile == 0x08) /* CD-ROM */
3148 			return mmc_getdiscinfo_cdrom(periph, mmc_discinfo);
3149 		if (mmc_discinfo->mmc_profile == 0x10) /* DVD-ROM */
3150 			return mmc_getdiscinfo_dvdrom(periph, mmc_discinfo);
3151 		/* CD/DVD drive is violating specs */
3152 		error = EIO;
3153 		goto out;
3154 	}
3155 
3156 	/* call went OK */
3157 	mmc_discinfo->disc_state         =  di.disc_state & 3;
3158 	mmc_discinfo->last_session_state = (di.disc_state >> 2) & 3;
3159 	mmc_discinfo->bg_format_state    = (di.disc_state2 & 3);
3160 
3161 	lsb = di.num_sessions_lsb;
3162 	msb = di.num_sessions_msb;
3163 	mmc_discinfo->num_sessions = lsb | (msb << 8);
3164 
3165 	mmc_discinfo->first_track = di.first_track;
3166 	lsb = di.first_track_last_session_lsb;
3167 	msb = di.first_track_last_session_msb;
3168 	mmc_discinfo->first_track_last_session = lsb | (msb << 8);
3169 	lsb = di.last_track_last_session_lsb;
3170 	msb = di.last_track_last_session_msb;
3171 	mmc_discinfo->last_track_last_session  = lsb | (msb << 8);
3172 
3173 	mmc_discinfo->num_tracks = mmc_discinfo->last_track_last_session -
3174 		mmc_discinfo->first_track + 1;
3175 
3176 	/* set misc. flags and parameters from this disc info */
3177 	if (di.disc_state  &  16)
3178 		mmc_discinfo->mmc_cur |= MMC_CAP_BLANKABLE;
3179 
3180 	if (di.disc_state2 & 128) {
3181 		mmc_discinfo->disc_id = _4btol(di.discid);
3182 		mmc_discinfo->disc_flags |= MMC_DFLAGS_DISCIDVALID;
3183 	}
3184 	if (di.disc_state2 &  64) {
3185 		mmc_discinfo->disc_barcode = _8btol(di.disc_bar_code);
3186 		mmc_discinfo->disc_flags |= MMC_DFLAGS_BARCODEVALID;
3187 	}
3188 	if (di.disc_state2 &  32)
3189 		mmc_discinfo->disc_flags |= MMC_DFLAGS_UNRESTRICTED;
3190 
3191 	if (di.disc_state2 &  16) {
3192 		mmc_discinfo->application_code = di.application_code;
3193 		mmc_discinfo->disc_flags |= MMC_DFLAGS_APPCODEVALID;
3194 	}
3195 
3196 	/* done */
3197 
3198 out:
3199 	free(buffer, M_TEMP);
3200 	return error;
3201 }
3202 
3203 static int
3204 mmc_gettrackinfo_cdrom(struct scsipi_periph *periph,
3205 		       struct mmc_trackinfo *trackinfo)
3206 {
3207 	struct scsipi_read_toc            gtoc_cmd;
3208 	struct scsipi_toc_header         *toc_hdr;
3209 	struct scsipi_toc_rawtoc         *rawtoc;
3210 	uint32_t track_start, track_size;
3211 	uint32_t last_recorded, next_writable;
3212 	uint32_t lba, next_track_start, lead_out;
3213 	const uint32_t buffer_size = 4 * 1024;	/* worst case TOC estimate */
3214 	uint8_t *buffer;
3215 	uint8_t track_sessionnr, sessionnr, adr, tno, point;
3216 	uint8_t control, tmin, tsec, tframe, pmin, psec, pframe;
3217 	int size, req_size;
3218 	int error, flags;
3219 
3220 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
3221 
3222 	/*
3223 	 * Emulate read trackinfo for CD-ROM using the raw-TOC.
3224 	 *
3225 	 * Not all information is present and this presents a problem.  Track
3226 	 * starts are known for each track but other values are deducted.
3227 	 *
3228 	 * For a complete overview of `magic' values used here, see the
3229 	 * SCSI/ATAPI MMC documentation. Note that the `magic' values have no
3230 	 * names, they are specified as numbers.
3231 	 */
3232 
3233 	/* get raw toc to process, first header to check size */
3234 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
3235 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
3236 	gtoc_cmd.opcode      = READ_TOC;
3237 	gtoc_cmd.addr_mode   = CD_MSF;		/* not relevant     */
3238 	gtoc_cmd.resp_format = CD_TOC_RAW;	/* raw toc          */
3239 	gtoc_cmd.from_track  = 1;		/* first session    */
3240 	req_size = sizeof(*toc_hdr);
3241 	_lto2b(req_size, gtoc_cmd.data_len);
3242 
3243 	error = scsipi_command(periph,
3244 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
3245 		(void *)buffer,    req_size,
3246 		CDRETRIES, 30000, NULL, flags);
3247 	if (error)
3248 		goto out;
3249 	toc_hdr = (struct scsipi_toc_header *) buffer;
3250 	if (_2btol(toc_hdr->length) > buffer_size - 2) {
3251 #ifdef DIAGNOSTIC
3252 		printf("increase buffersize in mmc_readtrackinfo_cdrom\n");
3253 #endif
3254 		error = ENOBUFS;
3255 		goto out;
3256 	}
3257 
3258 	/* read in complete raw toc */
3259 	req_size = _2btol(toc_hdr->length);
3260 	req_size = 2*((req_size + 1) / 2);	/* for ATAPI */
3261 	_lto2b(req_size, gtoc_cmd.data_len);
3262 
3263 	error = scsipi_command(periph,
3264 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
3265 		(void *)buffer,    req_size,
3266 		CDRETRIES, 30000, NULL, flags);
3267 	if (error)
3268 		goto out;
3269 
3270 	toc_hdr = (struct scsipi_toc_header *) buffer;
3271 	rawtoc  = (struct scsipi_toc_rawtoc *) (buffer + 4);
3272 
3273 	track_start      = 0;
3274 	track_size       = 0;
3275 	last_recorded    = 0;
3276 	next_writable    = 0;
3277 	flags            = 0;
3278 
3279 	next_track_start = 0;
3280 	track_sessionnr  = MAXTRACK;	/* by definition */
3281 	lead_out         = 0;
3282 
3283 	size = req_size - sizeof(struct scsipi_toc_header) + 1;
3284 	while (size > 0) {
3285 		/* get track start and session end */
3286 		tno       = rawtoc->tno;
3287 		sessionnr = rawtoc->sessionnr;
3288 		adr       = rawtoc->adrcontrol >> 4;
3289 		control   = rawtoc->adrcontrol & 0xf;
3290 		point     = rawtoc->point;
3291 		tmin      = rawtoc->min;
3292 		tsec      = rawtoc->sec;
3293 		tframe    = rawtoc->frame;
3294 		pmin      = rawtoc->pmin;
3295 		psec      = rawtoc->psec;
3296 		pframe    = rawtoc->pframe;
3297 
3298 		if (tno == 0 && sessionnr && adr == 1) {
3299 			lba = hmsf2lba(0, pmin, psec, pframe);
3300 			if (point == trackinfo->tracknr) {
3301 				track_start = lba;
3302 				track_sessionnr = sessionnr;
3303 			}
3304 			if (point == trackinfo->tracknr + 1) {
3305 				/* estimate size */
3306 				track_size = lba - track_start;
3307 				next_track_start = lba;
3308 			}
3309 			if (point == 0xa2) {
3310 				lead_out = lba;
3311 			}
3312 			if (point <= 0x63) {
3313 				/* CD's ok, DVD are glued */
3314 				/* last_tracknr = point; */
3315 			}
3316 			if (sessionnr == track_sessionnr) {
3317 				last_recorded = lead_out;
3318 			}
3319 		}
3320 		if (tno == 0 && sessionnr && adr == 5) {
3321 			lba = hmsf2lba(0, tmin, tsec, tframe);
3322 			if (sessionnr == track_sessionnr) {
3323 				next_writable = lba;
3324 			}
3325 		}
3326 
3327 		if ((control & (3<<2)) == 4)		/* 01xxb */
3328 			flags |= MMC_TRACKINFO_DATA;
3329 		if ((control & (1<<2)) == 0) {		/* x0xxb */
3330 			flags |= MMC_TRACKINFO_AUDIO;
3331 			if (control & 1)		/* xxx1b */
3332 				flags |= MMC_TRACKINFO_PRE_EMPH;
3333 		}
3334 
3335 		rawtoc++;
3336 		size -= sizeof(struct scsipi_toc_rawtoc);
3337 	}
3338 
3339 	/* process found values; some voodoo */
3340 	/* if no tracksize tracknr is the last of the disc */
3341 	if ((track_size == 0) && last_recorded) {
3342 		track_size = last_recorded - track_start;
3343 	}
3344 	/* if last_recorded < tracksize, tracksize is overestimated */
3345 	if (last_recorded) {
3346 		if (last_recorded - track_start <= track_size) {
3347 			track_size = last_recorded - track_start;
3348 			flags |= MMC_TRACKINFO_LRA_VALID;
3349 		}
3350 	}
3351 	/* check if its a the last track of the sector */
3352 	if (next_writable) {
3353 		if (next_track_start > next_writable)
3354 			flags |= MMC_TRACKINFO_NWA_VALID;
3355 	}
3356 
3357 	/* no flag set -> no values */
3358 	if ((flags & MMC_TRACKINFO_LRA_VALID) == 0)
3359 		last_recorded = 0;
3360 	if ((flags & MMC_TRACKINFO_NWA_VALID) == 0)
3361 		next_writable = 0;
3362 
3363 	/* fill in */
3364 	/* trackinfo->tracknr preserved */
3365 	trackinfo->sessionnr  = track_sessionnr;
3366 	trackinfo->track_mode = 7;	/* data, incremental  */
3367 	trackinfo->data_mode  = 8;	/* 2048 bytes mode1   */
3368 
3369 	trackinfo->flags = flags;
3370 	trackinfo->track_start   = track_start;
3371 	trackinfo->next_writable = next_writable;
3372 	trackinfo->free_blocks   = 0;
3373 	trackinfo->packet_size   = 1;
3374 	trackinfo->track_size    = track_size;
3375 	trackinfo->last_recorded = last_recorded;
3376 
3377 out:
3378 	free(buffer, M_TEMP);
3379 	return error;
3380 
3381 }
3382 
3383 static int
3384 mmc_gettrackinfo_dvdrom(struct scsipi_periph *periph,
3385 			struct mmc_trackinfo *trackinfo)
3386 {
3387 	struct scsipi_read_toc            gtoc_cmd;
3388 	struct scsipi_toc_header         *toc_hdr;
3389 	struct scsipi_toc_formatted      *toc;
3390 	uint32_t tracknr, track_start, track_size;
3391 	uint32_t lba, lead_out;
3392 	const uint32_t buffer_size = 4 * 1024;	/* worst case TOC estimate */
3393 	uint8_t *buffer;
3394 	uint8_t control, last_tracknr;
3395 	int size, req_size;
3396 	int error, flags;
3397 
3398 
3399 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
3400 	/*
3401 	 * Emulate read trackinfo for DVD-ROM. We can't use the raw-TOC as the
3402 	 * CD-ROM emulation uses since the specification tells us that no such
3403 	 * thing is defined for DVD's. The reason for this is due to the large
3404 	 * number of tracks and that would clash with the `magic' values. This
3405 	 * suxs.
3406 	 *
3407 	 * Not all information is present and this presents a problem.
3408 	 * Track starts are known for each track but other values are
3409 	 * deducted.
3410 	 */
3411 
3412 	/* get formatted toc to process, first header to check size */
3413 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
3414 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
3415 	gtoc_cmd.opcode      = READ_TOC;
3416 	gtoc_cmd.addr_mode   = 0;		/* lba's please     */
3417 	gtoc_cmd.resp_format = CD_TOC_FORM;	/* formatted toc    */
3418 	gtoc_cmd.from_track  = 1;		/* first track      */
3419 	req_size = sizeof(*toc_hdr);
3420 	_lto2b(req_size, gtoc_cmd.data_len);
3421 
3422 	error = scsipi_command(periph,
3423 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
3424 		(void *)buffer,    req_size,
3425 		CDRETRIES, 30000, NULL, flags);
3426 	if (error)
3427 		goto out;
3428 	toc_hdr = (struct scsipi_toc_header *) buffer;
3429 	if (_2btol(toc_hdr->length) > buffer_size - 2) {
3430 #ifdef DIAGNOSTIC
3431 		printf("incease buffersize in mmc_readtrackinfo_dvdrom\n");
3432 #endif
3433 		error = ENOBUFS;
3434 		goto out;
3435 	}
3436 
3437 	/* read in complete formatted toc */
3438 	req_size = _2btol(toc_hdr->length);
3439 	_lto2b(req_size, gtoc_cmd.data_len);
3440 
3441 	error = scsipi_command(periph,
3442 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
3443 		(void *)buffer,    req_size,
3444 		CDRETRIES, 30000, NULL, flags);
3445 	if (error)
3446 		goto out;
3447 
3448 	toc_hdr = (struct scsipi_toc_header *)     buffer;
3449 	toc     = (struct scsipi_toc_formatted *) (buffer + 4);
3450 
3451 	/* as in read disc info, all sessions are converted to tracks      */
3452 	/* track 1..  -> offsets, sizes can be (rougly) estimated (16 ECC) */
3453 	/* last track -> we got the size from the lead-out                 */
3454 
3455 	tracknr      = 0;
3456 	last_tracknr = toc_hdr->last;
3457 	track_start  = 0;
3458 	track_size   = 0;
3459 	lead_out     = 0;
3460 	flags        = 0;
3461 
3462 	size = req_size - sizeof(struct scsipi_toc_header) + 1;
3463 	while (size > 0) {
3464 		/* remember, DVD-ROM: tracknr == sessionnr */
3465 		lba     = _4btol(toc->msf_lba);
3466 		tracknr = toc->tracknr;
3467 		control = toc->adrcontrol & 0xf;
3468 
3469 		if (trackinfo->tracknr == tracknr) {
3470 			track_start = lba;
3471 		}
3472 		if (trackinfo->tracknr == tracknr+1) {
3473 			track_size  = lba - track_start;
3474 			track_size -= 16;	/* link block ? */
3475 		}
3476 		if (tracknr == 0xAA) {
3477 			lead_out = lba;
3478 		}
3479 
3480 		if ((control & (3<<2)) == 4)		/* 01xxb */
3481 			flags |= MMC_TRACKINFO_DATA;
3482 		if ((control & (1<<2)) == 0) {		/* x0xxb */
3483 			flags |= MMC_TRACKINFO_AUDIO;
3484 			if (control & (1<<3))		/* 10xxb */
3485 				flags |= MMC_TRACKINFO_AUDIO_4CHAN;
3486 			if (control & 1)		/* xxx1b */
3487 				flags |= MMC_TRACKINFO_PRE_EMPH;
3488 		}
3489 
3490 		toc++;
3491 		size -= sizeof(struct scsipi_toc_formatted);
3492 	}
3493 	if (trackinfo->tracknr == last_tracknr) {
3494 		track_size = lead_out - track_start;
3495 	}
3496 
3497 	/* fill in */
3498 	/* trackinfo->tracknr preserved */
3499 	trackinfo->sessionnr  = trackinfo->tracknr;
3500 	trackinfo->track_mode = 0;	/* unknown */
3501 	trackinfo->data_mode  = 8;	/* 2048 bytes mode1   */
3502 
3503 	trackinfo->flags         = flags;
3504 	trackinfo->track_start   = track_start;
3505 	trackinfo->next_writable = 0;
3506 	trackinfo->free_blocks   = 0;
3507 	trackinfo->packet_size   = 16;	/* standard length 16 blocks ECC */
3508 	trackinfo->track_size    = track_size;
3509 	trackinfo->last_recorded = 0;
3510 
3511 out:
3512 	free(buffer, M_TEMP);
3513 	return error;
3514 }
3515 
3516 static int
3517 mmc_gettrackinfo(struct scsipi_periph *periph,
3518 		 struct mmc_trackinfo *trackinfo)
3519 {
3520 	struct scsipi_read_trackinfo      ti_cmd;
3521 	struct scsipi_read_trackinfo_data ti;
3522 	struct scsipi_get_configuration   gc_cmd;
3523 	struct scsipi_get_conf_data       gc;
3524 	int error, flags;
3525 	int mmc_profile;
3526 
3527 	/* set up SCSI call with track number from trackinfo.tracknr */
3528 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
3529 	memset(&ti_cmd, 0, sizeof(ti_cmd));
3530 	ti_cmd.opcode    = READ_TRACKINFO;
3531 	ti_cmd.addr_type = READ_TRACKINFO_ADDR_TRACK;
3532 	ti_cmd.data_len[1] = READ_TRACKINFO_RETURNSIZE;
3533 
3534 	/* trackinfo.tracknr contains number of tracks to query */
3535 	_lto4b(trackinfo->tracknr, ti_cmd.address);
3536 	error = scsipi_command(periph,
3537 		(void *)&ti_cmd, sizeof(ti_cmd),
3538 		(void *)&ti,     READ_TRACKINFO_RETURNSIZE,
3539 		CDRETRIES, 30000, NULL, flags);
3540 
3541 	if (error) {
3542 		/* trackinfo call failed, emulate for cd-rom/dvd-rom */
3543 		/* first determine mmc profile */
3544 		flags = XS_CTL_DATA_IN;
3545 		memset(&gc_cmd, 0, sizeof(gc_cmd));
3546 		gc_cmd.opcode = GET_CONFIGURATION;
3547 		_lto2b(GET_CONF_NO_FEATURES_LEN, gc_cmd.data_len);
3548 
3549 		error = scsipi_command(periph,
3550 			(void *)&gc_cmd, sizeof(gc_cmd),
3551 			(void *)&gc,     GET_CONF_NO_FEATURES_LEN,
3552 			CDRETRIES, 30000, NULL, flags);
3553 		if (error)
3554 			return error;
3555 		mmc_profile = _2btol(gc.mmc_profile);
3556 
3557 		/* choose emulation */
3558 		if (mmc_profile == 0x08) /* CD-ROM */
3559 			return mmc_gettrackinfo_cdrom(periph, trackinfo);
3560 		if (mmc_profile == 0x10) /* DVD-ROM */
3561 			return mmc_gettrackinfo_dvdrom(periph, trackinfo);
3562 		/* CD/DVD drive is violating specs */
3563 		return EIO;
3564 	}
3565 
3566 	/* (re)initialise structure */
3567 	memset(trackinfo, 0, sizeof(struct mmc_trackinfo));
3568 
3569 	/* account for short returns screwing up track and session msb */
3570 	if ((ti.data_len[1] | (ti.data_len[0] << 8)) <= 32) {
3571 		ti.track_msb   = 0;
3572 		ti.session_msb = 0;
3573 	}
3574 
3575 	trackinfo->tracknr    = ti.track_lsb   | (ti.track_msb   << 8);
3576 	trackinfo->sessionnr  = ti.session_lsb | (ti.session_msb << 8);
3577 	trackinfo->track_mode = ti.track_info_1 & 0xf;
3578 	trackinfo->data_mode  = ti.track_info_2 & 0xf;
3579 
3580 	flags = 0;
3581 	if (ti.track_info_1 & 0x10)
3582 		flags |= MMC_TRACKINFO_COPY;
3583 	if (ti.track_info_1 & 0x20)
3584 		flags |= MMC_TRACKINFO_DAMAGED;
3585 	if (ti.track_info_2 & 0x10)
3586 		flags |= MMC_TRACKINFO_FIXED_PACKET;
3587 	if (ti.track_info_2 & 0x20)
3588 		flags |= MMC_TRACKINFO_INCREMENTAL;
3589 	if (ti.track_info_2 & 0x40)
3590 		flags |= MMC_TRACKINFO_BLANK;
3591 	if (ti.track_info_2 & 0x80)
3592 		flags |= MMC_TRACKINFO_RESERVED;
3593 	if (ti.data_valid   & 0x01)
3594 		flags |= MMC_TRACKINFO_NWA_VALID;
3595 	if (ti.data_valid   & 0x02)
3596 		flags |= MMC_TRACKINFO_LRA_VALID;
3597 	if ((trackinfo->track_mode & (3<<2)) == 4)		/* 01xxb */
3598 		flags |= MMC_TRACKINFO_DATA;
3599 	if ((trackinfo->track_mode & (1<<2)) == 0) {		/* x0xxb */
3600 		flags |= MMC_TRACKINFO_AUDIO;
3601 		if (trackinfo->track_mode & (1<<3))		/* 10xxb */
3602 			flags |= MMC_TRACKINFO_AUDIO_4CHAN;
3603 		if (trackinfo->track_mode & 1)			/* xxx1b */
3604 			flags |= MMC_TRACKINFO_PRE_EMPH;
3605 	}
3606 
3607 	trackinfo->flags = flags;
3608 	trackinfo->track_start    = _4btol(ti.track_start);
3609 	trackinfo->next_writable  = _4btol(ti.next_writable);
3610 	trackinfo->free_blocks    = _4btol(ti.free_blocks);
3611 	trackinfo->packet_size    = _4btol(ti.packet_size);
3612 	trackinfo->track_size     = _4btol(ti.track_size);
3613 	trackinfo->last_recorded  = _4btol(ti.last_recorded);
3614 
3615 	return 0;
3616 }
3617 
3618 static int
3619 mmc_doclose(struct scsipi_periph *periph, int param, int func) {
3620 	struct scsipi_close_tracksession close_cmd;
3621 	int error, flags;
3622 
3623 	/* set up SCSI call with track number */
3624 	flags = XS_CTL_DATA_OUT;
3625 	memset(&close_cmd, 0, sizeof(close_cmd));
3626 	close_cmd.opcode    = CLOSE_TRACKSESSION;
3627 	close_cmd.function  = func;
3628 	_lto2b(param, close_cmd.tracksessionnr);
3629 
3630 	error = scsipi_command(periph,
3631 		(void *) &close_cmd, sizeof(close_cmd),
3632 		NULL, 0,
3633 		CDRETRIES, 120000, NULL, flags);
3634 
3635 	return error;
3636 }
3637 
3638 static int
3639 mmc_do_closetrack(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3640 {
3641 	int mmc_profile = mmc_op->mmc_profile;
3642 
3643 	switch (mmc_profile) {
3644 	case 0x12 : /* DVD-RAM */
3645 	case 0x1a : /* DVD+RW  */
3646 	case 0x2a : /* DVD+RW Dual layer */
3647 	case 0x42 : /* BD-R Ramdom Recording (RRM) */
3648 	case 0x43 : /* BD-RE */
3649 	case 0x52 : /* HD DVD-RW ; DVD-RAM like */
3650 		return EINVAL;
3651 	}
3652 
3653 	return mmc_doclose(periph, mmc_op->tracknr, 1);
3654 }
3655 
3656 static int
3657 mmc_do_close_or_finalise(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3658 {
3659 	uint8_t blob[MS5LEN], *page5;
3660 	int mmc_profile = mmc_op->mmc_profile;
3661 	int func, close, flags;
3662 	int error;
3663 
3664 	close = (mmc_op->operation == MMC_OP_CLOSESESSION);
3665 
3666 	switch (mmc_profile) {
3667 	case 0x09 : /* CD-R       */
3668 	case 0x0a : /* CD-RW      */
3669 		/* Special case : need to update MS field in mode page 5 */
3670 		memset(blob, 0, sizeof(blob));
3671 		page5 = blob+8;
3672 
3673 		flags = XS_CTL_DATA_IN;
3674 		error = scsipi_mode_sense_big(periph, SMS_PF, 5,
3675 		    (void *)blob, sizeof(blob), flags, CDRETRIES, 20000);
3676 		if (error)
3677 			return error;
3678 
3679 		/* set multi session field when closing a session only */
3680 		page5[3] &= 63;
3681 		if (close)
3682 			page5[3] |= 3 << 6;
3683 
3684 		flags = XS_CTL_DATA_OUT;
3685 		error = scsipi_mode_select_big(periph, SMS_PF,
3686 		    (void *)blob, sizeof(blob), flags, CDRETRIES, 20000);
3687 		if (error)
3688 			return error;
3689 		/* and use funtion 2 */
3690 		func = 2;
3691 		break;
3692 	case 0x11 : /* DVD-R (DL) */
3693 	case 0x13 : /* DVD-RW restricted overwrite */
3694 	case 0x14 : /* DVD-RW sequential */
3695 		func = close ? 2 : 3;
3696 		break;
3697 	case 0x1b : /* DVD+R   */
3698 	case 0x2b : /* DVD+R Dual layer */
3699 	case 0x51 : /* HD DVD-R   */
3700 	case 0x41 : /* BD-R Sequential recording (SRM) */
3701 		func = close ? 2 : 6;
3702 		break;
3703 	case 0x12 : /* DVD-RAM */
3704 	case 0x1a : /* DVD+RW  */
3705 	case 0x2a : /* DVD+RW Dual layer */
3706 	case 0x42 : /* BD-R Ramdom Recording (RRM) */
3707 	case 0x43 : /* BD-RE */
3708 	case 0x52 : /* HD DVD-RW; DVD-RAM like */
3709 		return EINVAL;
3710 	default:
3711 		printf("MMC close/finalise passed wrong device type! (%d)\n",
3712 		    mmc_profile);
3713 		return EINVAL;
3714 	}
3715 
3716 	return mmc_doclose(periph, mmc_op->sessionnr, func);
3717 }
3718 
3719 static int
3720 mmc_do_reserve_track(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3721 {
3722 	struct scsipi_reserve_track reserve_cmd;
3723 	uint32_t extent;
3724 	int error, flags;
3725 
3726 	/* TODO make mmc safeguards? */
3727 	extent = mmc_op->extent;
3728 	/* TODO min/max support? */
3729 
3730 	/* set up SCSI call with requested space */
3731 	flags = XS_CTL_DATA_OUT;
3732 	memset(&reserve_cmd, 0, sizeof(reserve_cmd));
3733 	reserve_cmd.opcode = RESERVE_TRACK;
3734 	_lto4b(extent, reserve_cmd.reservation_size);
3735 
3736 	error = scsipi_command(periph,
3737 		(void *) &reserve_cmd, sizeof(reserve_cmd),
3738 		NULL, 0,
3739 		CDRETRIES, 30000, NULL, flags);
3740 
3741 	return error;
3742 }
3743 
3744 static int
3745 mmc_do_reserve_track_nwa(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3746 {
3747 	/* XXX assumes that NWA given is valid */
3748 	switch (mmc_op->mmc_profile) {
3749 	case 0x09 : /* CD-R       */
3750 		/* XXX unknown boundary checks XXX */
3751 		if (mmc_op->extent <= 152)
3752 			return EINVAL;
3753 		/* CD-R takes 152 sectors to close track */
3754 		mmc_op->extent -= 152;
3755 		return mmc_do_reserve_track(periph, mmc_op);
3756 	case 0x11 : /* DVD-R (DL) */
3757 	case 0x1b : /* DVD+R   */
3758 	case 0x2b : /* DVD+R Dual layer */
3759 		if (mmc_op->extent % 16)
3760 			return EINVAL;
3761 		/* upto one ECC block of 16 sectors lost */
3762 		mmc_op->extent -= 16;
3763 		return mmc_do_reserve_track(periph, mmc_op);
3764 	case 0x41 : /* BD-R Sequential recording (SRM) */
3765 	case 0x51 : /* HD DVD-R   */
3766 		if (mmc_op->extent % 32)
3767 			return EINVAL;
3768 		/* one ECC block of 32 sectors lost (AFAIK) */
3769 		mmc_op->extent -= 32;
3770 		return mmc_do_reserve_track(periph, mmc_op);
3771 	}
3772 
3773 	/* unknown behaviour or invalid disc type */
3774 	return EINVAL;
3775 }
3776 
3777 static int
3778 mmc_do_repair_track(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3779 {
3780 	struct scsipi_repair_track repair_cmd;
3781 	int error, flags;
3782 
3783 	/* TODO make mmc safeguards? */
3784 
3785 	/* set up SCSI call with track number */
3786 	flags = XS_CTL_DATA_OUT;
3787 	memset(&repair_cmd, 0, sizeof(repair_cmd));
3788 	repair_cmd.opcode = REPAIR_TRACK;
3789 	_lto2b(mmc_op->tracknr, repair_cmd.tracknr);
3790 
3791 	error = scsipi_command(periph,
3792 		(void *) &repair_cmd, sizeof(repair_cmd),
3793 		NULL, 0,
3794 		CDRETRIES, 30000, NULL, flags);
3795 
3796 	return error;
3797 }
3798 
3799 static int
3800 mmc_do_op(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3801 {
3802 	/* guard operation value */
3803 	if (mmc_op->operation < 1 || mmc_op->operation > MMC_OP_MAX)
3804 		return EINVAL;
3805 
3806 	/* synchronise cache is special since it doesn't rely on mmc_profile */
3807 	if (mmc_op->operation == MMC_OP_SYNCHRONISECACHE)
3808 		return cdcachesync(periph, 0);
3809 
3810 	/* zero mmc_profile means unknown disc so operations are not defined */
3811 	if (mmc_op->mmc_profile == 0) {
3812 #ifdef DEBUG
3813 		printf("mmc_do_op called with mmc_profile = 0\n");
3814 #endif
3815 		return EINVAL;
3816 	}
3817 
3818 	/* do the operations */
3819 	switch (mmc_op->operation) {
3820 	case MMC_OP_CLOSETRACK   :
3821 		return mmc_do_closetrack(periph, mmc_op);
3822 	case MMC_OP_CLOSESESSION :
3823 	case MMC_OP_FINALISEDISC :
3824 		return mmc_do_close_or_finalise(periph, mmc_op);
3825 	case MMC_OP_RESERVETRACK :
3826 		return mmc_do_reserve_track(periph, mmc_op);
3827 	case MMC_OP_RESERVETRACK_NWA :
3828 		return mmc_do_reserve_track_nwa(periph, mmc_op);
3829 	case MMC_OP_REPAIRTRACK  :
3830 		return mmc_do_repair_track(periph, mmc_op);
3831 	case MMC_OP_UNCLOSELASTSESSION :
3832 		/* TODO unclose last session support */
3833 		return EINVAL;
3834 	default :
3835 		printf("mmc_do_op: unhandled operation %d\n", mmc_op->operation);
3836 	}
3837 
3838 	return EINVAL;
3839 }
3840 
3841 static int
3842 mmc_setup_writeparams(struct scsipi_periph *periph,
3843 		      struct mmc_writeparams *mmc_writeparams)
3844 {
3845 	struct mmc_trackinfo trackinfo;
3846 	uint8_t blob[MS5LEN];
3847 	uint8_t *page5;
3848 	int flags, error;
3849 	int track_mode, data_mode;
3850 
3851 	/* setup mode page 5 for CD only */
3852 	if (mmc_writeparams->mmc_class != MMC_CLASS_CD)
3853 		return 0;
3854 
3855 	memset(blob, 0, sizeof(blob));
3856 	page5 = blob+8;
3857 
3858 	/* read mode page 5 (with header) */
3859 	flags = XS_CTL_DATA_IN;
3860 	error = scsipi_mode_sense_big(periph, SMS_PF, 5, (void *)blob,
3861 	    sizeof(blob), flags, CDRETRIES, 20000);
3862 	if (error)
3863 		return error;
3864 
3865 	/* set page length for reasurance */
3866 	page5[1] = P5LEN;	/* page length */
3867 
3868 	/* write type packet/incremental */
3869 	page5[2] &= 0xf0;
3870 
3871 	/* set specified mode parameters */
3872 	track_mode = mmc_writeparams->track_mode;
3873 	data_mode  = mmc_writeparams->data_mode;
3874 	if (track_mode <= 0 || track_mode > 15)
3875 		return EINVAL;
3876 	if (data_mode < 1 || data_mode > 2)
3877 		return EINVAL;
3878 
3879 	/* if a tracknr is passed, setup according to the track */
3880 	if (mmc_writeparams->tracknr > 0) {
3881 		trackinfo.tracknr = mmc_writeparams->tracknr;
3882 		error = mmc_gettrackinfo(periph, &trackinfo);
3883 		if (error)
3884 			return error;
3885 		if ((trackinfo.flags & MMC_TRACKINFO_BLANK) == 0) {
3886 			track_mode = trackinfo.track_mode;
3887 			data_mode  = trackinfo.data_mode;
3888 		}
3889 		mmc_writeparams->blockingnr = trackinfo.packet_size;
3890 	}
3891 
3892 	/* copy track mode and data mode from trackinfo */
3893 	page5[3] &= 16;		/* keep only `Copy' bit */
3894 	page5[3] |= (3 << 6) | track_mode;
3895 	page5[4] &= 0xf0;	/* wipe data block type */
3896 	if (data_mode == 1) {
3897 		/* select ISO mode 1 (CD only) */
3898 		page5[4] |= 8;
3899 		/* select session format normal disc (CD only) */
3900 		page5[8] = 0;
3901 	} else {
3902 		/* select ISO mode 2; XA form 1 (CD only) */
3903 		page5[4] |= 10;
3904 		/* select session format CD-ROM XA disc (CD only) */
3905 		page5[8] = 0x20;
3906 	}
3907 	if (mmc_writeparams->mmc_cur & MMC_CAP_SEQUENTIAL) {
3908 		if (mmc_writeparams->mmc_cur & MMC_CAP_ZEROLINKBLK) {
3909 			/* set BUFE buffer underrun protection */
3910 			page5[2] |= 1<<6;
3911 		}
3912 		/* allow for multi session */
3913 		page5[3] |= 3 << 6;
3914 	} else {
3915 		/* select fixed packets */
3916 		page5[3] |= 1<<5;
3917 		_lto4b(mmc_writeparams->blockingnr, &(page5[10]));
3918 	}
3919 
3920 	/* write out updated mode page 5 (with header) */
3921 	flags = XS_CTL_DATA_OUT;
3922 	error = scsipi_mode_select_big(periph, SMS_PF, (void *)blob,
3923 	    sizeof(blob), flags, CDRETRIES, 20000);
3924 	if (error)
3925 		return error;
3926 
3927 	return 0;
3928 }
3929 
3930 static void
3931 cd_set_geometry(struct cd_softc *cd)
3932 {
3933 	struct disk_geom *dg = &cd->sc_dk.dk_geom;
3934 
3935 	memset(dg, 0, sizeof(*dg));
3936 
3937 	dg->dg_secperunit = cd->params.disksize;
3938 	dg->dg_secsize = cd->params.blksize;
3939 
3940 	disk_set_info(cd->sc_dev, &cd->sc_dk, NULL);
3941 }
3942