cd.c revision 1.333
1/*	$NetBSD: cd.c,v 1.333 2016/11/20 15:37:19 mlelstv 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 1.333 2016/11/20 15:37:19 mlelstv 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/rndsource.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
110struct 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
116struct 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
124static void	cdstart(struct scsipi_periph *);
125static void	cdrestart(void *);
126static void	cdminphys(struct buf *);
127static void	cdgetdefaultlabel(struct cd_softc *, struct cd_formatted_toc *,
128		    struct disklabel *);
129static void	cdgetdisklabel(struct cd_softc *);
130static void	cddone(struct scsipi_xfer *, int);
131static void	cdbounce(struct buf *);
132static int	cd_interpret_sense(struct scsipi_xfer *);
133static u_long	cd_size(struct cd_softc *, int);
134static int	cd_play(struct cd_softc *, int, int);
135static int	cd_play_tracks(struct cd_softc *, struct cd_formatted_toc *,
136		    int, int, int, int);
137static int	cd_play_msf(struct cd_softc *, int, int, int, int, int, int);
138static int	cd_pause(struct cd_softc *, int);
139static int	cd_reset(struct cd_softc *);
140static int	cd_read_subchannel(struct cd_softc *, int, int, int,
141		    struct cd_sub_channel_info *, int, int);
142static int	cd_read_toc(struct cd_softc *, int, int, int,
143		    struct cd_formatted_toc *, int, int, int);
144static int	cd_get_parms(struct cd_softc *, int);
145static int	cd_load_toc(struct cd_softc *, int, struct cd_formatted_toc *, int);
146static int	cdreadmsaddr(struct cd_softc *, struct cd_formatted_toc *,int *);
147static int	cdcachesync(struct scsipi_periph *periph, int flags);
148
149static int	dvd_auth(struct cd_softc *, dvd_authinfo *);
150static int	dvd_read_physical(struct cd_softc *, dvd_struct *);
151static int	dvd_read_copyright(struct cd_softc *, dvd_struct *);
152static int	dvd_read_disckey(struct cd_softc *, dvd_struct *);
153static int	dvd_read_bca(struct cd_softc *, dvd_struct *);
154static int	dvd_read_manufact(struct cd_softc *, dvd_struct *);
155static int	dvd_read_struct(struct cd_softc *, dvd_struct *);
156
157static int	cd_mode_sense(struct cd_softc *, u_int8_t, void *, size_t, int,
158		    int, int *);
159static int	cd_mode_select(struct cd_softc *, u_int8_t, void *, size_t,
160		    int, int);
161static int	cd_setchan(struct cd_softc *, int, int, int, int, int);
162static int	cd_getvol(struct cd_softc *, struct ioc_vol *, int);
163static int	cd_setvol(struct cd_softc *, const struct ioc_vol *, int);
164static int	cd_set_pa_immed(struct cd_softc *, int);
165static int	cd_load_unload(struct cd_softc *, struct ioc_load_unload *);
166static int	cd_setblksize(struct cd_softc *);
167
168static int	cdmatch(device_t, cfdata_t, void *);
169static void	cdattach(device_t, device_t, void *);
170static int	cddetach(device_t, int);
171
172static int	mmc_getdiscinfo(struct scsipi_periph *, struct mmc_discinfo *);
173static int	mmc_gettrackinfo(struct scsipi_periph *, struct mmc_trackinfo *);
174static int	mmc_do_op(struct scsipi_periph *, struct mmc_op *);
175static int	mmc_setup_writeparams(struct scsipi_periph *, struct mmc_writeparams *);
176
177static void	cd_set_geometry(struct cd_softc *);
178
179CFATTACH_DECL3_NEW(cd, sizeof(struct cd_softc), cdmatch, cdattach, cddetach,
180    NULL, NULL, NULL, DVF_DETACH_SHUTDOWN);
181
182extern struct cfdriver cd_cd;
183
184static 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
197static dev_type_open(cdopen);
198static dev_type_close(cdclose);
199static dev_type_read(cdread);
200static dev_type_write(cdwrite);
201static dev_type_ioctl(cdioctl);
202static dev_type_strategy(cdstrategy);
203static dev_type_dump(cddump);
204static dev_type_size(cdsize);
205
206const 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_discard = nodiscard,
214	.d_flag = D_DISK | D_MPSAFE
215};
216
217const struct cdevsw cd_cdevsw = {
218	.d_open = cdopen,
219	.d_close = cdclose,
220	.d_read = cdread,
221	.d_write = cdwrite,
222	.d_ioctl = cdioctl,
223	.d_stop = nostop,
224	.d_tty = notty,
225	.d_poll = nopoll,
226	.d_mmap = nommap,
227	.d_kqfilter = nokqfilter,
228	.d_discard = nodiscard,
229	.d_flag = D_DISK | D_MPSAFE
230};
231
232static struct dkdriver cddkdriver = {
233	.d_strategy = cdstrategy,
234	.d_minphys = cdminphys
235};
236
237static const struct scsipi_periphsw cd_switch = {
238	cd_interpret_sense,	/* use our error handler first */
239	cdstart,		/* we have a queue, which is started by this */
240	NULL,			/* we do not have an async handler */
241	cddone,			/* deal with stats at interrupt time */
242};
243
244/*
245 * The routine called by the low level scsi routine when it discovers
246 * A device suitable for this driver
247 */
248static int
249cdmatch(device_t parent, cfdata_t match, void *aux)
250{
251	struct scsipibus_attach_args *sa = aux;
252	int priority;
253
254	(void)scsipi_inqmatch(&sa->sa_inqbuf,
255	    cd_patterns, sizeof(cd_patterns) / sizeof(cd_patterns[0]),
256	    sizeof(cd_patterns[0]), &priority);
257
258	return (priority);
259}
260
261static void
262cdattach(device_t parent, device_t self, void *aux)
263{
264	struct cd_softc *cd = device_private(self);
265	struct scsipibus_attach_args *sa = aux;
266	struct scsipi_periph *periph = sa->sa_periph;
267
268	SC_DEBUG(periph, SCSIPI_DB2, ("cdattach: "));
269
270	cd->sc_dev = self;
271
272	mutex_init(&cd->sc_lock, MUTEX_DEFAULT, IPL_NONE);
273
274	if (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph)) ==
275	    SCSIPI_BUSTYPE_SCSI && periph->periph_version == 0)
276		cd->flags |= CDF_ANCIENT;
277
278	bufq_alloc(&cd->buf_queue, "disksort", BUFQ_SORT_RAWBLOCK);
279
280	callout_init(&cd->sc_callout, 0);
281
282	/*
283	 * Store information needed to contact our base driver
284	 */
285	cd->sc_periph = periph;
286
287	periph->periph_dev = cd->sc_dev;
288	periph->periph_switch = &cd_switch;
289
290	/*
291	 * Increase our openings to the maximum-per-periph
292	 * supported by the adapter.  This will either be
293	 * clamped down or grown by the adapter if necessary.
294	 */
295	periph->periph_openings =
296	    SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel);
297	periph->periph_flags |= PERIPH_GROW_OPENINGS;
298
299	/*
300	 * Initialize and attach the disk structure.
301	 */
302	disk_init(&cd->sc_dk, device_xname(cd->sc_dev), &cddkdriver);
303	disk_attach(&cd->sc_dk);
304
305	aprint_normal("\n");
306	aprint_naive("\n");
307
308	rnd_attach_source(&cd->rnd_source, device_xname(cd->sc_dev),
309			  RND_TYPE_DISK, RND_FLAG_DEFAULT);
310
311	if (!pmf_device_register(self, NULL, NULL))
312		aprint_error_dev(self, "couldn't establish power handler\n");
313}
314
315static int
316cddetach(device_t self, int flags)
317{
318	struct cd_softc *cd = device_private(self);
319	struct scsipi_periph *periph = cd->sc_periph;
320	struct scsipi_channel *chan = periph->periph_channel;
321	int bmaj, cmaj, i, mn;
322
323	if (cd->sc_dk.dk_openmask != 0 && (flags & DETACH_FORCE) == 0)
324		return EBUSY;
325
326	/* locate the major number */
327	bmaj = bdevsw_lookup_major(&cd_bdevsw);
328	cmaj = cdevsw_lookup_major(&cd_cdevsw);
329	/* Nuke the vnodes for any open instances */
330	for (i = 0; i < MAXPARTITIONS; i++) {
331		mn = CDMINOR(device_unit(self), i);
332		vdevgone(bmaj, mn, mn, VBLK);
333		vdevgone(cmaj, mn, mn, VCHR);
334	}
335
336	/* kill any pending restart */
337	callout_stop(&cd->sc_callout);
338
339	mutex_enter(chan_mtx(chan));
340
341	/* Kill off any queued buffers. */
342	bufq_drain(cd->buf_queue);
343
344	/* Kill off any pending commands. */
345	scsipi_kill_pending(cd->sc_periph);
346
347	mutex_exit(chan_mtx(chan));
348
349	bufq_free(cd->buf_queue);
350
351	mutex_destroy(&cd->sc_lock);
352
353	/* Detach from the disk list. */
354	disk_detach(&cd->sc_dk);
355	disk_destroy(&cd->sc_dk);
356
357	/* Unhook the entropy source. */
358	rnd_detach_source(&cd->rnd_source);
359
360	return (0);
361}
362
363/*
364 * open the device. Make sure the partition info is a up-to-date as can be.
365 */
366static int
367cdopen(dev_t dev, int flag, int fmt, struct lwp *l)
368{
369	struct cd_softc *cd;
370	struct scsipi_periph *periph;
371	struct scsipi_adapter *adapt;
372	int part;
373	int error;
374	int rawpart;
375
376	cd = device_lookup_private(&cd_cd, CDUNIT(dev));
377	if (cd == NULL)
378		return (ENXIO);
379
380	periph = cd->sc_periph;
381	adapt = periph->periph_channel->chan_adapter;
382	part = CDPART(dev);
383
384	SC_DEBUG(periph, SCSIPI_DB1,
385	    ("cdopen: dev=0x%"PRIu64" (unit %"PRIu32" (of %d), partition %"PRId32")\n",dev,
386	    CDUNIT(dev), cd_cd.cd_ndevs, CDPART(dev)));
387
388	/*
389	 * If this is the first open of this device, add a reference
390	 * to the adapter.
391	 */
392	if (cd->sc_dk.dk_openmask == 0 &&
393	    (error = scsipi_adapter_addref(adapt)) != 0)
394		return (error);
395
396	mutex_enter(&cd->sc_lock);
397
398	rawpart = (part == RAW_PART && fmt == S_IFCHR);
399	if ((periph->periph_flags & PERIPH_OPEN) != 0) {
400		/*
401		 * If any partition is open, but the disk has been invalidated,
402		 * disallow further opens.
403		 */
404		if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 &&
405			!rawpart) {
406			error = EIO;
407			goto bad3;
408		}
409	} else {
410		/* Check that it is still responding and ok. */
411		error = scsipi_test_unit_ready(periph,
412		    XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE |
413		    XS_CTL_SILENT);
414
415		/*
416		 * Start the pack spinning if necessary. Always allow the
417		 * raw parition to be opened, for raw IOCTLs. Data transfers
418		 * will check for SDEV_MEDIA_LOADED.
419		 */
420		if (error == EIO) {
421			int error2;
422			int silent;
423
424			if (rawpart)
425				silent = XS_CTL_SILENT;
426			else
427				silent = 0;
428
429			error2 = scsipi_start(periph, SSS_START, silent);
430			switch (error2) {
431			case 0:
432				error = 0;
433				break;
434			case EIO:
435			case EINVAL:
436				break;
437			default:
438				error = error2;
439				break;
440			}
441		}
442		if (error) {
443			if (rawpart)
444				goto out;
445			goto bad3;
446		}
447
448		periph->periph_flags |= PERIPH_OPEN;
449
450		/* Lock the pack in. */
451		error = scsipi_prevent(periph, SPAMR_PREVENT_DT,
452		    XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE);
453		SC_DEBUG(periph, SCSIPI_DB1,
454		    ("cdopen: scsipi_prevent, error=%d\n", error));
455		if (error) {
456			if (rawpart)
457				goto out;
458			goto bad;
459		}
460
461		if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
462			/* Load the physical device parameters. */
463			if (cd_get_parms(cd, 0) != 0) {
464				if (rawpart)
465					goto out;
466				error = ENXIO;
467				goto bad;
468			}
469			periph->periph_flags |= PERIPH_MEDIA_LOADED;
470			SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded "));
471
472			/* Fabricate a disk label. */
473			cdgetdisklabel(cd);
474			SC_DEBUG(periph, SCSIPI_DB3, ("Disklabel fabricated "));
475
476			cd_set_geometry(cd);
477		}
478	}
479
480	/* Check that the partition exists. */
481	if (part != RAW_PART &&
482	    (part >= cd->sc_dk.dk_label->d_npartitions ||
483	    cd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) {
484		error = ENXIO;
485		goto bad;
486	}
487
488out:	/* Insure only one open at a time. */
489	switch (fmt) {
490	case S_IFCHR:
491		cd->sc_dk.dk_copenmask |= (1 << part);
492		break;
493	case S_IFBLK:
494		cd->sc_dk.dk_bopenmask |= (1 << part);
495		break;
496	}
497	cd->sc_dk.dk_openmask =
498	    cd->sc_dk.dk_copenmask | cd->sc_dk.dk_bopenmask;
499
500	SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n"));
501	mutex_exit(&cd->sc_lock);
502	return (0);
503
504bad:
505	if (cd->sc_dk.dk_openmask == 0) {
506		scsipi_prevent(periph, SPAMR_ALLOW,
507		    XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE);
508		periph->periph_flags &= ~PERIPH_OPEN;
509	}
510
511bad3:
512	mutex_exit(&cd->sc_lock);
513	if (cd->sc_dk.dk_openmask == 0)
514		scsipi_adapter_delref(adapt);
515	return (error);
516}
517
518/*
519 * close the device.. only called if we are the LAST
520 * occurence of an open device
521 */
522static int
523cdclose(dev_t dev, int flag, int fmt, struct lwp *l)
524{
525	struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(dev));
526	struct scsipi_periph *periph = cd->sc_periph;
527	struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter;
528	int part = CDPART(dev);
529	int silent = 0;
530
531	if (part == RAW_PART && ((cd->sc_dk.dk_label->d_npartitions == 0) ||
532	    (part < cd->sc_dk.dk_label->d_npartitions &&
533	    cd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)))
534		silent = XS_CTL_SILENT;
535
536	mutex_enter(&cd->sc_lock);
537
538	switch (fmt) {
539	case S_IFCHR:
540		cd->sc_dk.dk_copenmask &= ~(1 << part);
541		break;
542	case S_IFBLK:
543		cd->sc_dk.dk_bopenmask &= ~(1 << part);
544		break;
545	}
546	cd->sc_dk.dk_openmask =
547	    cd->sc_dk.dk_copenmask | cd->sc_dk.dk_bopenmask;
548
549	if (cd->sc_dk.dk_openmask == 0) {
550		/* synchronise caches on last close */
551		cdcachesync(periph, silent);
552
553		/* drain outstanding calls */
554		scsipi_wait_drain(periph);
555
556		scsipi_prevent(periph, SPAMR_ALLOW,
557		    XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE |
558		    XS_CTL_IGNORE_NOT_READY | silent);
559		periph->periph_flags &= ~PERIPH_OPEN;
560
561		scsipi_wait_drain(periph);
562
563		scsipi_adapter_delref(adapt);
564	}
565
566	mutex_exit(&cd->sc_lock);
567	return (0);
568}
569
570/*
571 * Actually translate the requested transfer into one the physical driver can
572 * understand.  The transfer is described by a buf and will include only one
573 * physical transfer.
574 */
575static void
576cdstrategy(struct buf *bp)
577{
578	struct cd_softc *cd = device_lookup_private(&cd_cd,CDUNIT(bp->b_dev));
579	struct disklabel *lp;
580	struct scsipi_periph *periph = cd->sc_periph;
581	struct scsipi_channel *chan = periph->periph_channel;
582	daddr_t blkno;
583
584	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cdstrategy "));
585	SC_DEBUG(cd->sc_periph, SCSIPI_DB1,
586	    ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno));
587	/*
588	 * If the device has been made invalid, error out
589	 * maybe the media changed
590	 */
591	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
592		if (periph->periph_flags & PERIPH_OPEN)
593			bp->b_error = EIO;
594		else
595			bp->b_error = ENODEV;
596		goto done;
597	}
598
599	lp = cd->sc_dk.dk_label;
600
601	/*
602	 * The transfer must be a whole number of blocks, offset must not
603	 * be negative.
604	 */
605	if ((bp->b_bcount % lp->d_secsize) != 0 ||
606	    bp->b_blkno < 0 ) {
607		bp->b_error = EINVAL;
608		goto done;
609	}
610	/*
611	 * If it's a null transfer, return immediately
612	 */
613	if (bp->b_bcount == 0)
614		goto done;
615
616	/*
617	 * Do bounds checking, adjust transfer. if error, process.
618	 * If end of partition, just return.
619	 */
620	if (CDPART(bp->b_dev) == RAW_PART) {
621		if (bounds_check_with_mediasize(bp, DEV_BSIZE,
622		    cd->params.disksize512) <= 0)
623			goto done;
624	} else {
625		if (bounds_check_with_label(&cd->sc_dk, bp,
626		    (cd->flags & (CDF_WLABEL|CDF_LABELLING)) != 0) <= 0)
627			goto done;
628	}
629
630	/*
631	 * Now convert the block number to absolute and put it in
632	 * terms of the device's logical block size.
633	 */
634	blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE);
635	if (CDPART(bp->b_dev) != RAW_PART)
636		blkno += lp->d_partitions[CDPART(bp->b_dev)].p_offset;
637
638	bp->b_rawblkno = blkno;
639
640	/*
641	 * If the disklabel sector size does not match the device
642	 * sector size we may need to do some extra work.
643	 */
644	if (lp->d_secsize != cd->params.blksize) {
645
646		/*
647		 * If the xfer is not a multiple of the device block size
648		 * or it is not block aligned, we need to bounce it.
649		 */
650		if ((bp->b_bcount % cd->params.blksize) != 0 ||
651			((blkno * lp->d_secsize) % cd->params.blksize) != 0) {
652			struct cdbounce *bounce;
653			struct buf *nbp;
654			long count;
655
656			if ((bp->b_flags & B_READ) == 0) {
657
658				/* XXXX We don't support bouncing writes. */
659				bp->b_error = EACCES;
660				goto done;
661			}
662
663			bounce = malloc(sizeof(*bounce), M_DEVBUF, M_NOWAIT);
664			if (!bounce) {
665				/* No memory -- fail the iop. */
666				bp->b_error = ENOMEM;
667				goto done;
668			}
669
670			bounce->obp = bp;
671			bounce->resid = bp->b_bcount;
672			bounce->doff = 0;
673			count = ((blkno * lp->d_secsize) % cd->params.blksize);
674			bounce->soff = count;
675			count += bp->b_bcount;
676			count = roundup(count, cd->params.blksize);
677			bounce->bcount = bounce->resid;
678			if (count > MAXPHYS) {
679				bounce->bcount = MAXPHYS - bounce->soff;
680				count = MAXPHYS;
681			}
682
683			blkno = ((blkno * lp->d_secsize) / cd->params.blksize);
684			nbp = getiobuf(NULL, false);
685			if (!nbp) {
686				/* No memory -- fail the iop. */
687				free(bounce, M_DEVBUF);
688				bp->b_error = ENOMEM;
689				goto done;
690			}
691			nbp->b_data = malloc(count, M_DEVBUF, M_NOWAIT);
692			if (!nbp->b_data) {
693				/* No memory -- fail the iop. */
694				free(bounce, M_DEVBUF);
695				putiobuf(nbp);
696				bp->b_error = ENOMEM;
697				goto done;
698			}
699
700			/* Set up the IOP to the bounce buffer. */
701			nbp->b_error = 0;
702			nbp->b_proc = bp->b_proc;
703			nbp->b_bcount = count;
704			nbp->b_bufsize = count;
705			nbp->b_rawblkno = blkno;
706			nbp->b_flags = bp->b_flags | B_READ;
707			nbp->b_oflags = bp->b_oflags;
708			nbp->b_cflags = bp->b_cflags;
709			nbp->b_iodone = cdbounce;
710
711			/* store bounce state in b_private and use new buf */
712			nbp->b_private = bounce;
713
714			BIO_COPYPRIO(nbp, bp);
715
716			bp = nbp;
717
718		} else {
719			/* Xfer is aligned -- just adjust the start block */
720			bp->b_rawblkno = (blkno * lp->d_secsize) /
721				cd->params.blksize;
722		}
723	}
724	mutex_enter(chan_mtx(chan));
725
726	/*
727	 * Place it in the queue of disk activities for this disk.
728	 *
729	 * XXX Only do disksort() if the current operating mode does not
730	 * XXX include tagged queueing.
731	 */
732	bufq_put(cd->buf_queue, bp);
733
734	/*
735	 * Tell the device to get going on the transfer if it's
736	 * not doing anything, otherwise just wait for completion
737	 */
738	cdstart(periph);
739
740	mutex_exit(chan_mtx(chan));
741	return;
742
743done:
744	/*
745	 * Correctly set the buf to indicate a completed xfer
746	 */
747	bp->b_resid = bp->b_bcount;
748	biodone(bp);
749}
750
751/*
752 * cdstart looks to see if there is a buf waiting for the device
753 * and that the device is not already busy. If both are true,
754 * It deques the buf and creates a scsi command to perform the
755 * transfer in the buf. The transfer request will call scsipi_done
756 * on completion, which will in turn call this routine again
757 * so that the next queued transfer is performed.
758 * The bufs are queued by the strategy routine (cdstrategy)
759 *
760 * This routine is also called after other non-queued requests
761 * have been made of the scsi driver, to ensure that the queue
762 * continues to be drained.
763 *
764 * must be called with channel lock held
765 * cdstart() is called from cdstrategy, cdrestart and scsipi_done
766 */
767static void
768cdstart(struct scsipi_periph *periph)
769{
770	struct cd_softc *cd = device_private(periph->periph_dev);
771	struct buf *bp = 0;
772	struct scsipi_rw_10 cmd_big;
773	struct scsi_rw_6 cmd_small;
774	struct scsipi_generic *cmdp;
775	struct scsipi_xfer *xs;
776	int flags, nblks, cmdlen, error __diagused;
777
778	SC_DEBUG(periph, SCSIPI_DB2, ("cdstart "));
779
780	/*
781	 * Check if the device has room for another command
782	 */
783	while (periph->periph_active < periph->periph_openings) {
784		/*
785		 * there is excess capacity, but a special waits
786		 * It'll need the adapter as soon as we clear out of the
787		 * way and let it run (user level wait).
788		 */
789		if (periph->periph_flags & PERIPH_WAITING) {
790			periph->periph_flags &= ~PERIPH_WAITING;
791			cv_broadcast(periph_cv_periph(periph));
792			return;
793		}
794
795		/*
796		 * If the device has become invalid, abort all the
797		 * reads and writes until all files have been closed and
798		 * re-opened
799		 */
800		if (__predict_false(
801		    (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) {
802			if ((bp = bufq_get(cd->buf_queue)) != NULL) {
803				bp->b_error = EIO;
804				bp->b_resid = bp->b_bcount;
805				biodone(bp);
806				continue;
807			} else {
808				return;
809			}
810		}
811
812		/*
813		 * See if there is a buf with work for us to do..
814		 */
815		if ((bp = bufq_peek(cd->buf_queue)) == NULL)
816			return;
817
818		/*
819		 * We have a buf, now we should make a command.
820		 */
821
822		nblks = howmany(bp->b_bcount, cd->params.blksize);
823
824		/*
825		 *  Fill out the scsi command.  If the transfer will
826		 *  fit in a "small" cdb, use it.
827		 */
828		if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) &&
829		    ((nblks & 0xff) == nblks) &&
830		    !(periph->periph_quirks & PQUIRK_ONLYBIG)) {
831			/*
832			 * We can fit in a small cdb.
833			 */
834			memset(&cmd_small, 0, sizeof(cmd_small));
835			cmd_small.opcode = (bp->b_flags & B_READ) ?
836			    SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND;
837			_lto3b(bp->b_rawblkno, cmd_small.addr);
838			cmd_small.length = nblks & 0xff;
839			cmdlen = sizeof(cmd_small);
840			cmdp = (struct scsipi_generic *)&cmd_small;
841		} else {
842			/*
843			 * Need a large cdb.
844			 */
845			memset(&cmd_big, 0, sizeof(cmd_big));
846			cmd_big.opcode = (bp->b_flags & B_READ) ?
847			    READ_10 : WRITE_10;
848			_lto4b(bp->b_rawblkno, cmd_big.addr);
849			_lto2b(nblks, cmd_big.length);
850			cmdlen = sizeof(cmd_big);
851			cmdp = (struct scsipi_generic *)&cmd_big;
852		}
853
854		/* Instrumentation. */
855		disk_busy(&cd->sc_dk);
856
857		/*
858		 * Figure out what flags to use.
859		 */
860		flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG;
861		if (bp->b_flags & B_READ)
862			flags |= XS_CTL_DATA_IN;
863		else
864			flags |= XS_CTL_DATA_OUT;
865
866		/*
867		 * Call the routine that chats with the adapter.
868		 * Note: we cannot sleep as we may be an interrupt
869		 */
870		xs = scsipi_make_xs_locked(periph, cmdp, cmdlen,
871		    (u_char *)bp->b_data, bp->b_bcount,
872		    CDRETRIES, 30000, bp, flags);
873		if (__predict_false(xs == NULL)) {
874			/*
875			 * out of memory. Keep this buffer in the queue, and
876			 * retry later.
877			 */
878			callout_reset(&cd->sc_callout, hz / 2, cdrestart,
879			    periph);
880			return;
881		}
882		/*
883		 * need to dequeue the buffer before queuing the command,
884		 * because cdstart may be called recursively from the
885		 * HBA driver
886		 */
887#ifdef DIAGNOSTIC
888		if (bufq_get(cd->buf_queue) != bp)
889			panic("cdstart(): dequeued wrong buf");
890#else
891		bufq_get(cd->buf_queue);
892#endif
893		error = scsipi_execute_xs(xs);
894		/* with a scsipi_xfer preallocated, scsipi_command can't fail */
895		KASSERT(error == 0);
896	}
897}
898
899static void
900cdrestart(void *v)
901{
902	struct scsipi_periph *periph = (struct scsipi_periph *)v;
903	struct scsipi_channel *chan = periph->periph_channel;
904
905	mutex_enter(chan_mtx(chan));
906	cdstart((struct scsipi_periph *)v);
907	mutex_exit(chan_mtx(chan));
908}
909
910static void
911cddone(struct scsipi_xfer *xs, int error)
912{
913	struct cd_softc *cd = device_private(xs->xs_periph->periph_dev);
914	struct buf *bp = xs->bp;
915
916	if (bp) {
917		/* note, bp->b_resid is NOT initialised */
918		bp->b_error = error;
919		bp->b_resid = xs->resid;
920		if (error) {
921			/* on a read/write error bp->b_resid is zero, so fix */
922			bp->b_resid = bp->b_bcount;
923		}
924
925		disk_unbusy(&cd->sc_dk, bp->b_bcount - bp->b_resid,
926		    (bp->b_flags & B_READ));
927		rnd_add_uint32(&cd->rnd_source, bp->b_rawblkno);
928
929		biodone(bp);
930	}
931}
932
933static void
934cdbounce(struct buf *bp)
935{
936	struct cdbounce *bounce = (struct cdbounce *)bp->b_private;
937	struct buf *obp = bounce->obp;
938	struct cd_softc *cd =
939	    device_lookup_private(&cd_cd, CDUNIT(obp->b_dev));
940	struct disklabel *lp = cd->sc_dk.dk_label;
941
942	if (bp->b_error != 0) {
943		/* EEK propagate the error and free the memory */
944		goto done;
945	}
946
947	KASSERT(obp->b_flags & B_READ);
948
949	/* copy bounce buffer to final destination */
950	memcpy((char *)obp->b_data + bounce->doff,
951	    (char *)bp->b_data + bounce->soff, bounce->bcount);
952
953	/* check if we need more I/O, i.e. bounce put us over MAXPHYS */
954	KASSERT(bounce->resid >= bounce->bcount);
955	bounce->resid -= bounce->bcount;
956	if (bounce->resid > 0) {
957		struct buf *nbp;
958		daddr_t blkno;
959		long count;
960
961		blkno = obp->b_rawblkno +
962		    ((obp->b_bcount - bounce->resid) / lp->d_secsize);
963		count = ((blkno * lp->d_secsize) % cd->params.blksize);
964		blkno = (blkno * lp->d_secsize) / cd->params.blksize;
965		bounce->soff = count;
966		bounce->doff += bounce->bcount;
967		count += bounce->resid;
968		count = roundup(count, cd->params.blksize);
969		bounce->bcount = bounce->resid;
970		if (count > MAXPHYS) {
971			bounce->bcount = MAXPHYS - bounce->soff;
972			count = MAXPHYS;
973		}
974
975		nbp = getiobuf(NULL, false);
976		if (!nbp) {
977			/* No memory -- fail the iop. */
978			bp->b_error = ENOMEM;
979			goto done;
980		}
981
982		/* Set up the IOP to the bounce buffer. */
983		nbp->b_error = 0;
984		nbp->b_proc = obp->b_proc;
985		nbp->b_bcount = count;
986		nbp->b_bufsize = count;
987		nbp->b_data = bp->b_data;
988		nbp->b_rawblkno = blkno;
989		nbp->b_flags = obp->b_flags | B_READ;
990		nbp->b_oflags = obp->b_oflags;
991		nbp->b_cflags = obp->b_cflags;
992		nbp->b_iodone = cdbounce;
993
994		/* store bounce state in b_private and use new buf */
995		nbp->b_private = bounce;
996
997		BIO_COPYPRIO(nbp, obp);
998
999		bp->b_data = NULL;
1000		putiobuf(bp);
1001
1002		/* enqueue the request and return */
1003		mutex_enter(chan_mtx(cd->sc_periph->periph_channel));
1004		bufq_put(cd->buf_queue, nbp);
1005		cdstart(cd->sc_periph);
1006		mutex_exit(chan_mtx(cd->sc_periph->periph_channel));
1007
1008		return;
1009	}
1010
1011done:
1012	obp->b_error = bp->b_error;
1013	obp->b_resid = bp->b_resid;
1014	free(bp->b_data, M_DEVBUF);
1015	free(bounce, M_DEVBUF);
1016	bp->b_data = NULL;
1017	putiobuf(bp);
1018	biodone(obp);
1019}
1020
1021static int
1022cd_interpret_sense(struct scsipi_xfer *xs)
1023{
1024	struct scsipi_periph *periph = xs->xs_periph;
1025	struct scsi_sense_data *sense = &xs->sense.scsi_sense;
1026	int retval = EJUSTRETURN;
1027
1028	/*
1029	 * If it isn't a extended or extended/deferred error, let
1030	 * the generic code handle it.
1031	 */
1032	if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT &&
1033	    SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED)
1034		return (retval);
1035
1036	/*
1037	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Logical Unit
1038	 * Is In The Process of Becoming Ready" (Sense code 0x04,0x01), then
1039	 * wait a bit for the drive to spin up
1040	 */
1041
1042	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
1043	    (sense->asc == 0x04) && (sense->ascq == 0x01)) {
1044		/*
1045		 * Sleep for 5 seconds to wait for the drive to spin up
1046		 */
1047
1048		SC_DEBUG(periph, SCSIPI_DB1, ("Waiting 5 sec for CD "
1049						"spinup\n"));
1050		if (!callout_pending(&periph->periph_callout))
1051			scsipi_periph_freeze(periph, 1);
1052		callout_reset(&periph->periph_callout,
1053		    5 * hz, scsipi_periph_timed_thaw, periph);
1054		retval = ERESTART;
1055	}
1056
1057	/*
1058	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Logical Unit Not
1059	 * Ready, Operation In Progress" (Sense code 0x04, 0x07),
1060	 * then wait for the specified time
1061	 */
1062
1063	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
1064	    (sense->asc == 0x04) && (sense->ascq == 0x07)) {
1065		/*
1066		 * we could listen to the delay; but it looks like the skey
1067		 * data is not always returned.
1068		 */
1069		/* cd_delay = _2btol(sense->sks.sks_bytes); */
1070
1071		/* wait for a half second and get going again */
1072		if (!callout_pending(&periph->periph_callout))
1073			scsipi_periph_freeze(periph, 1);
1074		callout_reset(&periph->periph_callout,
1075		    hz/2, scsipi_periph_timed_thaw, periph);
1076		retval = ERESTART;
1077	}
1078
1079	/*
1080	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Long write in
1081	 * progress" (Sense code 0x04, 0x08), then wait for the specified
1082	 * time
1083	 */
1084
1085	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
1086	    (sense->asc == 0x04) && (sense->ascq == 0x08)) {
1087		/*
1088		 * long write in process; we could listen to the delay; but it
1089		 * looks like the skey data is not always returned.
1090		 */
1091		/* cd_delay = _2btol(sense->sks.sks_bytes); */
1092
1093		/* wait for a half second and get going again */
1094		if (!callout_pending(&periph->periph_callout))
1095			scsipi_periph_freeze(periph, 1);
1096		callout_reset(&periph->periph_callout,
1097		    hz/2, scsipi_periph_timed_thaw, periph);
1098		retval = ERESTART;
1099	}
1100
1101	return (retval);
1102}
1103
1104static void
1105cdminphys(struct buf *bp)
1106{
1107	struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(bp->b_dev));
1108	long xmax;
1109
1110	/*
1111	 * If the device is ancient, we want to make sure that
1112	 * the transfer fits into a 6-byte cdb.
1113	 *
1114	 * XXX Note that the SCSI-I spec says that 256-block transfers
1115	 * are allowed in a 6-byte read/write, and are specified
1116	 * by settng the "length" to 0.  However, we're conservative
1117	 * here, allowing only 255-block transfers in case an
1118	 * ancient device gets confused by length == 0.  A length of 0
1119	 * in a 10-byte read/write actually means 0 blocks.
1120	 */
1121	if (cd->flags & CDF_ANCIENT) {
1122		xmax = cd->sc_dk.dk_label->d_secsize * 0xff;
1123
1124		if (bp->b_bcount > xmax)
1125			bp->b_bcount = xmax;
1126	}
1127
1128	(*cd->sc_periph->periph_channel->chan_adapter->adapt_minphys)(bp);
1129}
1130
1131static int
1132cdread(dev_t dev, struct uio *uio, int ioflag)
1133{
1134	return (physio(cdstrategy, NULL, dev, B_READ, cdminphys, uio));
1135}
1136
1137static int
1138cdwrite(dev_t dev, struct uio *uio, int ioflag)
1139{
1140	return (physio(cdstrategy, NULL, dev, B_WRITE, cdminphys, uio));
1141}
1142
1143#if 0	/* XXX Not used */
1144/*
1145 * conversion between minute-seconde-frame and logical block address
1146 * addresses format
1147 */
1148static void
1149lba2msf(u_long lba, u_char *m, u_char *s, u_char *f)
1150{
1151	u_long tmp;
1152
1153	tmp = lba + CD_BLOCK_OFFSET;	/* offset of first logical frame */
1154	tmp &= 0xffffff;		/* negative lbas use only 24 bits */
1155	*m = tmp / (CD_SECS * CD_FRAMES);
1156	tmp %= (CD_SECS * CD_FRAMES);
1157	*s = tmp / CD_FRAMES;
1158	*f = tmp % CD_FRAMES;
1159}
1160#endif /* XXX Not used */
1161
1162/*
1163 * Convert an hour:minute:second:frame address to a logical block adres. In
1164 * theory the number of secs/minute and number of frames/second could be
1165 * configured differently in the device  as could the block offset but in
1166 * practice these values are rock solid and most drives don't even allow
1167 * theses values to be changed.
1168 */
1169static uint32_t
1170hmsf2lba(uint8_t h, uint8_t m, uint8_t s, uint8_t f)
1171{
1172	return (((((uint32_t) h * 60 + m) * CD_SECS) + s) * CD_FRAMES + f)
1173		- CD_BLOCK_OFFSET;
1174}
1175
1176static int
1177cdreadmsaddr(struct cd_softc *cd, struct cd_formatted_toc *toc, int *addr)
1178{
1179	struct scsipi_periph *periph = cd->sc_periph;
1180	int error;
1181	struct cd_toc_entry *cte;
1182
1183	error = cd_read_toc(cd, CD_TOC_FORM, 0, 0, toc,
1184	    sizeof(struct ioc_toc_header) + sizeof(struct cd_toc_entry),
1185	    0, 0x40 /* control word for "get MS info" */);
1186
1187	if (error)
1188		return (error);
1189
1190	cte = &toc->entries[0];
1191	if (periph->periph_quirks & PQUIRK_LITTLETOC) {
1192		cte->addr.lba = le32toh(cte->addr.lba);
1193		toc->header.len = le16toh(toc->header.len);
1194	} else {
1195		cte->addr.lba = be32toh(cte->addr.lba);
1196		toc->header.len = be16toh(toc->header.len);
1197	}
1198
1199	*addr = (toc->header.len >= 10 && cte->track > 1) ?
1200		cte->addr.lba : 0;
1201	return 0;
1202}
1203
1204/* synchronise caches code from sd.c, move to scsipi_ioctl.c ? */
1205static int
1206cdcachesync(struct scsipi_periph *periph, int flags) {
1207	struct scsi_synchronize_cache_10 cmd;
1208
1209	/*
1210	 * Issue a SYNCHRONIZE CACHE. MMC devices have to issue with address 0
1211	 * and length 0 as it can't synchronise parts of the disc per spec.
1212	 * We ignore ILLEGAL REQUEST in the event that the command is not
1213	 * supported by the device, and poll for completion so that we know
1214	 * that the cache has actually been flushed.
1215	 *
1216	 * XXX should we handle the PQUIRK_NOSYNCCACHE ?
1217	 */
1218
1219	memset(&cmd, 0, sizeof(cmd));
1220	cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10;
1221
1222	return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0,
1223	    CDRETRIES, 30000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST));
1224}
1225
1226static int
1227do_cdioreadentries(struct cd_softc *cd, struct ioc_read_toc_entry *te,
1228    struct cd_formatted_toc *toc)
1229{
1230	/* READ TOC format 0 command, entries */
1231	struct ioc_toc_header *th;
1232	struct cd_toc_entry *cte;
1233	u_int len = te->data_len;
1234	int ntracks;
1235	int error;
1236
1237	th = &toc->header;
1238
1239	if (len > sizeof(toc->entries) ||
1240	    len < sizeof(toc->entries[0]))
1241		return (EINVAL);
1242	error = cd_read_toc(cd, CD_TOC_FORM, te->address_format,
1243	    te->starting_track, toc,
1244	    sizeof(toc->header) + len,
1245	    0, 0);
1246	if (error)
1247		return (error);
1248	if (te->address_format == CD_LBA_FORMAT)
1249		for (ntracks =
1250		    th->ending_track - th->starting_track + 1;
1251		    ntracks >= 0; ntracks--) {
1252			cte = &toc->entries[ntracks];
1253			cte->addr_type = CD_LBA_FORMAT;
1254			if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
1255				cte->addr.lba = le32toh(cte->addr.lba);
1256			else
1257				cte->addr.lba = be32toh(cte->addr.lba);
1258		}
1259	if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
1260		th->len = le16toh(th->len);
1261	else
1262		th->len = be16toh(th->len);
1263	return 0;
1264}
1265
1266/*
1267 * Perform special action on behalf of the user.
1268 * Knows about the internals of this device
1269 */
1270static int
1271cdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
1272{
1273	struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(dev));
1274	struct scsipi_periph *periph = cd->sc_periph;
1275	struct cd_formatted_toc toc;
1276	int part = CDPART(dev);
1277	int error;
1278#ifdef __HAVE_OLD_DISKLABEL
1279	struct disklabel *newlabel = NULL;
1280#endif
1281
1282	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cdioctl 0x%lx ", cmd));
1283
1284	/*
1285	 * If the device is not valid, some IOCTLs can still be
1286	 * handled on the raw partition. Check this here.
1287	 */
1288	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
1289		switch (cmd) {
1290		case DIOCWLABEL:
1291		case DIOCLOCK:
1292		case ODIOCEJECT:
1293		case DIOCEJECT:
1294		case DIOCCACHESYNC:
1295		case DIOCTUR:
1296		case SCIOCIDENTIFY:
1297		case OSCIOCIDENTIFY:
1298		case SCIOCCOMMAND:
1299		case SCIOCDEBUG:
1300		case CDIOCGETVOL:
1301		case CDIOCSETVOL:
1302		case CDIOCSETMONO:
1303		case CDIOCSETSTEREO:
1304		case CDIOCSETMUTE:
1305		case CDIOCSETLEFT:
1306		case CDIOCSETRIGHT:
1307		case CDIOCCLOSE:
1308		case CDIOCEJECT:
1309		case CDIOCALLOW:
1310		case CDIOCPREVENT:
1311		case CDIOCSETDEBUG:
1312		case CDIOCCLRDEBUG:
1313		case CDIOCRESET:
1314		case SCIOCRESET:
1315		case CDIOCLOADUNLOAD:
1316		case DVD_AUTH:
1317		case DVD_READ_STRUCT:
1318		case DIOCGSTRATEGY:
1319		case DIOCSSTRATEGY:
1320			if (part == RAW_PART)
1321				break;
1322		/* FALLTHROUGH */
1323		default:
1324			if ((periph->periph_flags & PERIPH_OPEN) == 0)
1325				return (ENODEV);
1326			else
1327				return (EIO);
1328		}
1329	}
1330
1331	error = disk_ioctl(&cd->sc_dk, dev, cmd, addr, flag, l);
1332	if (error != EPASSTHROUGH)
1333		return (error);
1334
1335	error = 0;
1336	switch (cmd) {
1337	case DIOCWDINFO:
1338	case DIOCSDINFO:
1339#ifdef __HAVE_OLD_DISKLABEL
1340	case ODIOCWDINFO:
1341	case ODIOCSDINFO:
1342#endif
1343	{
1344		struct disklabel *lp;
1345
1346		if ((flag & FWRITE) == 0)
1347			return (EBADF);
1348
1349#ifdef __HAVE_OLD_DISKLABEL
1350		if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) {
1351			newlabel = malloc(sizeof (*newlabel), M_TEMP,
1352			    M_WAITOK | M_ZERO);
1353			if (newlabel == NULL)
1354				return (EIO);
1355			memcpy(newlabel, addr, sizeof (struct olddisklabel));
1356			lp = newlabel;
1357		} else
1358#endif
1359		lp = addr;
1360
1361		mutex_enter(&cd->sc_lock);
1362		cd->flags |= CDF_LABELLING;
1363
1364		error = setdisklabel(cd->sc_dk.dk_label,
1365		    lp, /*cd->sc_dk.dk_openmask : */0,
1366		    cd->sc_dk.dk_cpulabel);
1367		if (error == 0) {
1368			/* XXX ? */
1369		}
1370
1371		cd->flags &= ~CDF_LABELLING;
1372		mutex_exit(&cd->sc_lock);
1373#ifdef __HAVE_OLD_DISKLABEL
1374		if (newlabel != NULL)
1375			free(newlabel, M_TEMP);
1376#endif
1377		return (error);
1378	}
1379
1380	case DIOCWLABEL:
1381		return (EBADF);
1382
1383	case DIOCGDEFLABEL:
1384		cdgetdefaultlabel(cd, &toc, addr);
1385		return (0);
1386
1387#ifdef __HAVE_OLD_DISKLABEL
1388	case ODIOCGDEFLABEL:
1389		newlabel = malloc(sizeof (*newlabel), M_TEMP, M_WAITOK);
1390		if (newlabel == NULL)
1391			return (EIO);
1392		cdgetdefaultlabel(cd, &toc, newlabel);
1393		if (newlabel->d_npartitions > OLDMAXPARTITIONS)
1394			error = ENOTTY;
1395		else
1396			memcpy(addr, newlabel, sizeof (struct olddisklabel));
1397		free(newlabel, M_TEMP);
1398		return error;
1399#endif
1400
1401	case DIOCTUR: {
1402		/* test unit ready */
1403		error = scsipi_test_unit_ready(cd->sc_periph, XS_CTL_SILENT);
1404		*((int*)addr) = (error == 0);
1405		if (error == ENODEV || error == EIO || error == 0)
1406			return 0;
1407		return error;
1408	}
1409
1410	case CDIOCPLAYTRACKS: {
1411		/* PLAY_MSF command */
1412		struct ioc_play_track *args = addr;
1413
1414		if ((error = cd_set_pa_immed(cd, 0)) != 0)
1415			return (error);
1416		return (cd_play_tracks(cd, &toc, args->start_track,
1417		    args->start_index, args->end_track, args->end_index));
1418	}
1419	case CDIOCPLAYMSF: {
1420		/* PLAY_MSF command */
1421		struct ioc_play_msf *args = addr;
1422
1423		if ((error = cd_set_pa_immed(cd, 0)) != 0)
1424			return (error);
1425		return (cd_play_msf(cd, args->start_m, args->start_s,
1426		    args->start_f, args->end_m, args->end_s, args->end_f));
1427	}
1428	case CDIOCPLAYBLOCKS: {
1429		/* PLAY command */
1430		struct ioc_play_blocks *args = addr;
1431
1432		if ((error = cd_set_pa_immed(cd, 0)) != 0)
1433			return (error);
1434		return (cd_play(cd, args->blk, args->len));
1435	}
1436	case CDIOCREADSUBCHANNEL: {
1437		/* READ_SUBCHANNEL command */
1438		struct ioc_read_subchannel *args = addr;
1439		struct cd_sub_channel_info data;
1440		u_int len = args->data_len;
1441
1442		if (len > sizeof(data) ||
1443		    len < sizeof(struct cd_sub_channel_header))
1444			return (EINVAL);
1445		error = cd_read_subchannel(cd, args->address_format,
1446		    args->data_format, args->track, &data, len, 0);
1447		if (error)
1448			return (error);
1449		len = min(len, _2btol(data.header.data_len) +
1450		    sizeof(struct cd_sub_channel_header));
1451		return (copyout(&data, args->data, len));
1452	}
1453	case CDIOCREADSUBCHANNEL_BUF: {
1454		/* As CDIOCREADSUBCHANNEL, but without a 2nd buffer area */
1455		struct ioc_read_subchannel_buf *args = addr;
1456		if (args->req.data_len != sizeof args->info)
1457			return EINVAL;
1458		return cd_read_subchannel(cd, args->req.address_format,
1459		    args->req.data_format, args->req.track, &args->info,
1460		    sizeof(args->info), 0);
1461	}
1462	case CDIOREADTOCHEADER: {
1463		/* READ TOC format 0 command, static header */
1464		if ((error = cd_read_toc(cd, CD_TOC_FORM, 0, 0,
1465		    &toc, sizeof(toc.header), 0, 0)) != 0)
1466			return (error);
1467		if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
1468			toc.header.len = le16toh(toc.header.len);
1469		else
1470			toc.header.len = be16toh(toc.header.len);
1471		memcpy(addr, &toc.header, sizeof(toc.header));
1472		return (0);
1473	}
1474	case CDIOREADTOCENTRYS: {
1475		struct ioc_read_toc_entry *te = addr;
1476		error = do_cdioreadentries(cd, te, &toc);
1477		if (error != 0)
1478			return error;
1479		return copyout(toc.entries, te->data, min(te->data_len,
1480		    toc.header.len - (sizeof(toc.header.starting_track)
1481			+ sizeof(toc.header.ending_track))));
1482	}
1483	case CDIOREADTOCENTRIES_BUF: {
1484		struct ioc_read_toc_entry_buf *te = addr;
1485		error = do_cdioreadentries(cd, &te->req, &toc);
1486		if (error != 0)
1487			return error;
1488		memcpy(te->entry, toc.entries, min(te->req.data_len,
1489		    toc.header.len - (sizeof(toc.header.starting_track)
1490			+ sizeof(toc.header.ending_track))));
1491		return 0;
1492	}
1493	case CDIOREADMSADDR: {
1494		/* READ TOC format 0 command, length of first track only */
1495		int sessno = *(int*)addr;
1496
1497		if (sessno != 0)
1498			return (EINVAL);
1499
1500		return (cdreadmsaddr(cd, &toc, addr));
1501	}
1502	case CDIOCSETPATCH: {
1503		struct ioc_patch *arg = addr;
1504
1505		return (cd_setchan(cd, arg->patch[0], arg->patch[1],
1506		    arg->patch[2], arg->patch[3], 0));
1507	}
1508	case CDIOCGETVOL: {
1509		/* MODE SENSE command (AUDIO page) */
1510		struct ioc_vol *arg = addr;
1511
1512		return (cd_getvol(cd, arg, 0));
1513	}
1514	case CDIOCSETVOL: {
1515		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1516		struct ioc_vol *arg = addr;
1517
1518		return (cd_setvol(cd, arg, 0));
1519	}
1520	case CDIOCSETMONO:
1521		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1522		return (cd_setchan(cd, BOTH_CHANNEL, BOTH_CHANNEL,
1523		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
1524
1525	case CDIOCSETSTEREO:
1526		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1527		return (cd_setchan(cd, LEFT_CHANNEL, RIGHT_CHANNEL,
1528		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
1529
1530	case CDIOCSETMUTE:
1531		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1532		return (cd_setchan(cd, MUTE_CHANNEL, MUTE_CHANNEL,
1533		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
1534
1535	case CDIOCSETLEFT:
1536		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1537		return (cd_setchan(cd, LEFT_CHANNEL, LEFT_CHANNEL,
1538		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
1539
1540	case CDIOCSETRIGHT:
1541		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
1542		return (cd_setchan(cd, RIGHT_CHANNEL, RIGHT_CHANNEL,
1543		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
1544
1545	case CDIOCRESUME:
1546		/* PAUSE command */
1547		return (cd_pause(cd, PA_RESUME));
1548	case CDIOCPAUSE:
1549		/* PAUSE command */
1550		return (cd_pause(cd, PA_PAUSE));
1551	case CDIOCSTART:
1552		return (scsipi_start(periph, SSS_START, 0));
1553	case CDIOCSTOP:
1554		return (scsipi_start(periph, SSS_STOP, 0));
1555	case CDIOCCLOSE:
1556		return (scsipi_start(periph, SSS_START|SSS_LOEJ,
1557		    XS_CTL_IGNORE_NOT_READY | XS_CTL_IGNORE_MEDIA_CHANGE));
1558	case DIOCEJECT:
1559		if (*(int *)addr == 0) {
1560			/*
1561			 * Don't force eject: check that we are the only
1562			 * partition open. If so, unlock it.
1563			 */
1564			if ((cd->sc_dk.dk_openmask & ~(1 << part)) == 0 &&
1565			    cd->sc_dk.dk_bopenmask + cd->sc_dk.dk_copenmask ==
1566			    cd->sc_dk.dk_openmask) {
1567				error = scsipi_prevent(periph, SPAMR_ALLOW,
1568				    XS_CTL_IGNORE_NOT_READY);
1569				if (error)
1570					return (error);
1571			} else {
1572				return (EBUSY);
1573			}
1574		}
1575		/* FALLTHROUGH */
1576	case CDIOCEJECT: /* FALLTHROUGH */
1577	case ODIOCEJECT:
1578		error = scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0);
1579		if (error == 0) {
1580			int i;
1581
1582			/*
1583			 * We have just successfully ejected the medium,
1584			 * all partitions cached are meaningless now.
1585			 * Make sure cdclose() will do silent operations
1586			 * now by marking all partitions unused.
1587			 * Before any real access, a new (default-)disk-
1588			 * label will be generated anyway.
1589			 */
1590			for (i = 0; i < cd->sc_dk.dk_label->d_npartitions;
1591			    i++)
1592				cd->sc_dk.dk_label->d_partitions[i].p_fstype =
1593					FS_UNUSED;
1594		}
1595		return error;
1596	case DIOCCACHESYNC:
1597		/* SYNCHRONISE CACHES command */
1598		return (cdcachesync(periph, 0));
1599	case CDIOCALLOW:
1600		return (scsipi_prevent(periph, SPAMR_ALLOW, 0));
1601	case CDIOCPREVENT:
1602		return (scsipi_prevent(periph, SPAMR_PREVENT_DT, 0));
1603	case DIOCLOCK:
1604		return (scsipi_prevent(periph,
1605		    (*(int *)addr) ? SPAMR_PREVENT_DT : SPAMR_ALLOW, 0));
1606	case CDIOCSETDEBUG:
1607		cd->sc_periph->periph_dbflags |= (SCSIPI_DB1 | SCSIPI_DB2);
1608		return (0);
1609	case CDIOCCLRDEBUG:
1610		cd->sc_periph->periph_dbflags &= ~(SCSIPI_DB1 | SCSIPI_DB2);
1611		return (0);
1612	case CDIOCRESET:
1613	case SCIOCRESET:
1614		return (cd_reset(cd));
1615	case CDIOCLOADUNLOAD:
1616		/* LOAD_UNLOAD command */
1617		return (cd_load_unload(cd, addr));
1618	case DVD_AUTH:
1619		/* GPCMD_REPORT_KEY or GPCMD_SEND_KEY command */
1620		return (dvd_auth(cd, addr));
1621	case DVD_READ_STRUCT:
1622		/* GPCMD_READ_DVD_STRUCTURE command */
1623		return (dvd_read_struct(cd, addr));
1624	case MMCGETDISCINFO:
1625		/*
1626		 * GET_CONFIGURATION, READ_DISCINFO, READ_TRACKINFO,
1627		 * (READ_TOCf2, READ_CD_CAPACITY and GET_CONFIGURATION) commands
1628		 */
1629		return mmc_getdiscinfo(periph, (struct mmc_discinfo *) addr);
1630	case MMCGETTRACKINFO:
1631		/* READ TOCf2, READ_CD_CAPACITY and READ_TRACKINFO commands */
1632		return mmc_gettrackinfo(periph, (struct mmc_trackinfo *) addr);
1633	case MMCOP:
1634		/*
1635		 * CLOSE TRACK/SESSION, RESERVE_TRACK, REPAIR_TRACK,
1636		 * SYNCHRONISE_CACHE commands
1637		 */
1638		return mmc_do_op(periph, (struct mmc_op *) addr);
1639	case MMCSETUPWRITEPARAMS :
1640		/* MODE SENSE page 5, MODE_SELECT page 5 commands */
1641		return mmc_setup_writeparams(periph, (struct mmc_writeparams *) addr);
1642	case DIOCGSTRATEGY:
1643	    {
1644		struct disk_strategy *dks = addr;
1645		int s;
1646
1647		s = splbio();
1648		strlcpy(dks->dks_name, bufq_getstrategyname(cd->buf_queue),
1649		    sizeof(dks->dks_name));
1650		splx(s);
1651		dks->dks_paramlen = 0;
1652
1653		return 0;
1654	    }
1655	case DIOCSSTRATEGY:
1656	    {
1657		struct disk_strategy *dks = addr;
1658		struct bufq_state *new;
1659		struct bufq_state *old;
1660		int s;
1661
1662		if ((flag & FWRITE) == 0) {
1663			return EBADF;
1664		}
1665		if (dks->dks_param != NULL) {
1666			return EINVAL;
1667		}
1668		dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */
1669		error = bufq_alloc(&new, dks->dks_name,
1670		    BUFQ_EXACT|BUFQ_SORT_RAWBLOCK);
1671		if (error) {
1672			return error;
1673		}
1674		s = splbio();
1675		old = cd->buf_queue;
1676		bufq_move(new, old);
1677		cd->buf_queue = new;
1678		splx(s);
1679		bufq_free(old);
1680
1681		return 0;
1682	    }
1683	default:
1684		if (part != RAW_PART)
1685			return (ENOTTY);
1686		return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l));
1687	}
1688
1689#ifdef DIAGNOSTIC
1690	panic("cdioctl: impossible");
1691#endif
1692}
1693
1694static void
1695cdgetdefaultlabel(struct cd_softc *cd, struct cd_formatted_toc *toc,
1696    struct disklabel *lp)
1697{
1698	int lastsession;
1699
1700	memset(lp, 0, sizeof(struct disklabel));
1701
1702	lp->d_secsize = cd->params.blksize;
1703	lp->d_ntracks = 1;
1704	lp->d_nsectors = 100;
1705	lp->d_ncylinders = (cd->params.disksize / 100) + 1;
1706	lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors;
1707
1708	switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(cd->sc_periph))) {
1709	case SCSIPI_BUSTYPE_SCSI:
1710		lp->d_type = DKTYPE_SCSI;
1711		break;
1712	case SCSIPI_BUSTYPE_ATAPI:
1713		lp->d_type = DKTYPE_ATAPI;
1714		break;
1715	}
1716	/*
1717	 * XXX
1718	 * We could probe the mode pages to figure out what kind of disc it is.
1719	 * Is this worthwhile?
1720	 */
1721	strncpy(lp->d_typename, "optical media", 16);
1722	strncpy(lp->d_packname, "fictitious", 16);
1723	lp->d_secperunit = cd->params.disksize;
1724	lp->d_rpm = 300;
1725	lp->d_interleave = 1;
1726	lp->d_flags = D_REMOVABLE | D_SCSI_MMC;
1727
1728	if (cdreadmsaddr(cd, toc, &lastsession) != 0)
1729		lastsession = 0;
1730
1731	lp->d_partitions[0].p_offset = 0;
1732	lp->d_partitions[0].p_size = lp->d_secperunit;
1733	lp->d_partitions[0].p_cdsession = lastsession;
1734	lp->d_partitions[0].p_fstype = FS_ISO9660;
1735
1736	lp->d_partitions[RAW_PART].p_offset = 0;
1737	lp->d_partitions[RAW_PART].p_size = lp->d_secperunit;
1738	lp->d_partitions[RAW_PART].p_fstype = FS_UDF;
1739
1740	lp->d_npartitions = RAW_PART + 1;
1741
1742	lp->d_magic = DISKMAGIC;
1743	lp->d_magic2 = DISKMAGIC;
1744	lp->d_checksum = dkcksum(lp);
1745}
1746
1747/*
1748 * Load the label information on the named device
1749 * Actually fabricate a disklabel
1750 *
1751 * EVENTUALLY take information about different
1752 * data tracks from the TOC and put it in the disklabel
1753 */
1754static void
1755cdgetdisklabel(struct cd_softc *cd)
1756{
1757	struct disklabel *lp = cd->sc_dk.dk_label;
1758	struct cd_formatted_toc toc;
1759	const char *errstring;
1760	int bmajor;
1761
1762	memset(cd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel));
1763
1764	cdgetdefaultlabel(cd, &toc, lp);
1765
1766	/*
1767	 * Call the generic disklabel extraction routine
1768	 *
1769	 * bmajor follows ata_raid code
1770	 */
1771	bmajor = devsw_name2blk(device_xname(cd->sc_dev), NULL, 0);
1772	errstring = readdisklabel(MAKECDDEV(bmajor,
1773	    device_unit(cd->sc_dev), RAW_PART),
1774	    cdstrategy, lp, cd->sc_dk.dk_cpulabel);
1775
1776	/* if all went OK, we are passed a NULL error string */
1777	if (errstring == NULL)
1778		return;
1779
1780	/* Reset to default label -- after printing error and the warning */
1781	aprint_error_dev(cd->sc_dev, "%s\n", errstring);
1782	memset(cd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel));
1783	cdgetdefaultlabel(cd, &toc, lp);
1784}
1785
1786/*
1787 * Reading a disc's total capacity is apparently a very difficult issue for the
1788 * SCSI standardisation group. Every disc type seems to have its own
1789 * (re)invented size request method and modifiers. The failsafe way of
1790 * determining the total (max) capacity i.e. not the recorded capacity but the
1791 * total maximum capacity is to request the info on the last track and
1792 * calculate the last lba.
1793 *
1794 * For ROM drives, we go for the CD recorded capacity. For recordable devices
1795 * we count.
1796 */
1797static int
1798read_cd_capacity(struct scsipi_periph *periph, uint32_t *blksize, u_long *last_lba)
1799{
1800	struct scsipi_read_cd_capacity    cap_cmd;
1801	/*
1802	 * XXX: see PR 48550 and PR 48754:
1803	 * the ahcisata(4) driver can not deal with unaligned
1804	 * data, so align this "a bit"
1805	 */
1806	struct scsipi_read_cd_cap_data    cap __aligned(2);
1807	struct scsipi_read_discinfo       di_cmd;
1808	struct scsipi_read_discinfo_data  di __aligned(2);
1809	struct scsipi_read_trackinfo      ti_cmd;
1810	struct scsipi_read_trackinfo_data ti __aligned(2);
1811	uint32_t track_start, track_size;
1812	int error, flags, msb, lsb, last_track;
1813
1814	/* if the device doesn't grok capacity, return the dummies */
1815	if (periph->periph_quirks & PQUIRK_NOCAPACITY)
1816		return 0;
1817
1818	/* first try read CD capacity for blksize and last recorded lba */
1819	/* issue the cd capacity request */
1820	flags = XS_CTL_DATA_IN;
1821	memset(&cap_cmd, 0, sizeof(cap_cmd));
1822	memset(&cap, 0, sizeof(cap));
1823	cap_cmd.opcode = READ_CD_CAPACITY;
1824
1825	error = scsipi_command(periph,
1826	    (void *) &cap_cmd, sizeof(cap_cmd),
1827	    (void *) &cap,     sizeof(cap),
1828	    CDRETRIES, 30000, NULL, flags);
1829	if (error)
1830		return error;
1831
1832	/* retrieve values and sanity check them */
1833	*blksize  = _4btol(cap.length);
1834	*last_lba = _4btol(cap.addr);
1835
1836	/* blksize is 2048 for CD, but some drives give gibberish */
1837	if ((*blksize < 512) || ((*blksize & 511) != 0)
1838	    || (*blksize > 16*1024)) {
1839		if (*blksize > 16*1024)
1840			aprint_error("read_cd_capacity: extra large block "
1841			    "size %u found - limiting to 2kByte\n",
1842			    *blksize);
1843		*blksize = 2048;	/* some drives lie ! */
1844	}
1845
1846	/* recordables have READ_DISCINFO implemented */
1847	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
1848	memset(&di_cmd, 0, sizeof(di_cmd));
1849	di_cmd.opcode = READ_DISCINFO;
1850	_lto2b(READ_DISCINFO_BIGSIZE, di_cmd.data_len);
1851
1852	error = scsipi_command(periph,
1853	    (void *) &di_cmd,  sizeof(di_cmd),
1854	    (void *) &di,      READ_DISCINFO_BIGSIZE,
1855	    CDRETRIES, 30000, NULL, flags);
1856	if (error == 0) {
1857		msb = di.last_track_last_session_msb;
1858		lsb = di.last_track_last_session_lsb;
1859		last_track = (msb << 8) | lsb;
1860
1861		/* request info on last track */
1862		memset(&ti_cmd, 0, sizeof(ti_cmd));
1863		ti_cmd.opcode = READ_TRACKINFO;
1864		ti_cmd.addr_type = 1;			/* on tracknr */
1865		_lto4b(last_track, ti_cmd.address);	/* tracknr    */
1866		_lto2b(sizeof(ti), ti_cmd.data_len);
1867
1868		error = scsipi_command(periph,
1869		    (void *) &ti_cmd,  sizeof(ti_cmd),
1870		    (void *) &ti,      sizeof(ti),
1871		    CDRETRIES, 30000, NULL, flags);
1872		if (error == 0) {
1873			track_start = _4btol(ti.track_start);
1874			track_size  = _4btol(ti.track_size);
1875
1876			/* overwrite only with a sane value */
1877			if (track_start + track_size >= 100)
1878				*last_lba = (u_long) track_start + track_size -1;
1879		}
1880	}
1881
1882	/* sanity check for lba_size */
1883	if (*last_lba < 100)
1884		*last_lba = 400000-1;
1885
1886	return 0;
1887}
1888
1889/*
1890 * Find out from the device what its capacity is
1891 */
1892static u_long
1893cd_size(struct cd_softc *cd, int flags)
1894{
1895	uint32_t blksize = 2048;
1896	u_long last_lba = 0, size;
1897	int error;
1898
1899	error = read_cd_capacity(cd->sc_periph, &blksize, &last_lba);
1900	if (error)
1901		goto error;
1902
1903	if (blksize != 2048) {
1904		if (cd_setblksize(cd) == 0) {
1905			blksize = 2048;
1906			error = read_cd_capacity(cd->sc_periph,
1907			    &blksize, &last_lba);
1908			if (error)
1909				goto error;
1910		}
1911	}
1912
1913	size = last_lba + 1;
1914	cd->params.blksize     = blksize;
1915	cd->params.disksize    = size;
1916	cd->params.disksize512 = ((u_int64_t)cd->params.disksize * blksize) / DEV_BSIZE;
1917
1918	SC_DEBUG(cd->sc_periph, SCSIPI_DB2,
1919	    ("cd_size: %u %lu\n", blksize, size));
1920
1921	return size;
1922
1923error:
1924	/* something went wrong */
1925	cd->params.blksize     = 2048;
1926	cd->params.disksize    = 0;
1927	cd->params.disksize512 = 0;
1928
1929	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cd_size: failed\n"));
1930
1931	return 0;
1932}
1933
1934/*
1935 * Get scsi driver to send a "start playing" command
1936 */
1937static int
1938cd_play(struct cd_softc *cd, int blkno, int nblks)
1939{
1940	struct scsipi_play cmd;
1941
1942	memset(&cmd, 0, sizeof(cmd));
1943	cmd.opcode = PLAY;
1944	_lto4b(blkno, cmd.blk_addr);
1945	_lto2b(nblks, cmd.xfer_len);
1946
1947	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
1948	    CDRETRIES, 30000, NULL, 0));
1949}
1950
1951/*
1952 * Get scsi driver to send a "start playing" command
1953 */
1954static int
1955cd_play_tracks(struct cd_softc *cd, struct cd_formatted_toc *toc, int strack,
1956    int sindex, int etrack, int eindex)
1957{
1958	int error;
1959
1960	if (!etrack)
1961		return (EIO);
1962	if (strack > etrack)
1963		return (EINVAL);
1964
1965	error = cd_load_toc(cd, CD_TOC_FORM, toc, 0);
1966	if (error)
1967		return (error);
1968
1969	if (++etrack > (toc->header.ending_track+1))
1970		etrack = toc->header.ending_track+1;
1971
1972	strack -= toc->header.starting_track;
1973	etrack -= toc->header.starting_track;
1974	if (strack < 0)
1975		return (EINVAL);
1976
1977	return (cd_play_msf(cd, toc->entries[strack].addr.msf.minute,
1978	    toc->entries[strack].addr.msf.second,
1979	    toc->entries[strack].addr.msf.frame,
1980	    toc->entries[etrack].addr.msf.minute,
1981	    toc->entries[etrack].addr.msf.second,
1982	    toc->entries[etrack].addr.msf.frame));
1983}
1984
1985/*
1986 * Get scsi driver to send a "play msf" command
1987 */
1988static int
1989cd_play_msf(struct cd_softc *cd, int startm, int starts, int startf, int endm,
1990    int ends, int endf)
1991{
1992	struct scsipi_play_msf cmd;
1993
1994	memset(&cmd, 0, sizeof(cmd));
1995	cmd.opcode = PLAY_MSF;
1996	cmd.start_m = startm;
1997	cmd.start_s = starts;
1998	cmd.start_f = startf;
1999	cmd.end_m = endm;
2000	cmd.end_s = ends;
2001	cmd.end_f = endf;
2002
2003	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
2004	    CDRETRIES, 30000, NULL, 0));
2005}
2006
2007/*
2008 * Get scsi driver to send a "start up" command
2009 */
2010static int
2011cd_pause(struct cd_softc *cd, int go)
2012{
2013	struct scsipi_pause cmd;
2014
2015	memset(&cmd, 0, sizeof(cmd));
2016	cmd.opcode = PAUSE;
2017	cmd.resume = go & 0xff;
2018
2019	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
2020	    CDRETRIES, 30000, NULL, 0));
2021}
2022
2023/*
2024 * Get scsi driver to send a "RESET" command
2025 */
2026static int
2027cd_reset(struct cd_softc *cd)
2028{
2029
2030	return (scsipi_command(cd->sc_periph, 0, 0, 0, 0,
2031	    CDRETRIES, 30000, NULL, XS_CTL_RESET));
2032}
2033
2034/*
2035 * Read subchannel
2036 */
2037static int
2038cd_read_subchannel(struct cd_softc *cd, int mode, int format, int track,
2039    struct cd_sub_channel_info *data, int len, int flags)
2040{
2041	struct scsipi_read_subchannel cmd;
2042
2043	memset(&cmd, 0, sizeof(cmd));
2044	cmd.opcode = READ_SUBCHANNEL;
2045	if (mode == CD_MSF_FORMAT)
2046		cmd.byte2 |= CD_MSF;
2047	cmd.byte3 = SRS_SUBQ;
2048	cmd.subchan_format = format;
2049	cmd.track = track;
2050	_lto2b(len, cmd.data_len);
2051
2052	return (scsipi_command(cd->sc_periph,
2053	    (void *)&cmd, sizeof(struct scsipi_read_subchannel),
2054	    (void *)data, len,
2055	    CDRETRIES, 30000, NULL, flags | XS_CTL_DATA_IN | XS_CTL_SILENT));
2056}
2057
2058/*
2059 * Read table of contents
2060 */
2061static int
2062cd_read_toc(struct cd_softc *cd, int respf, int mode, int start,
2063    struct cd_formatted_toc *toc, int len, int flags, int control)
2064{
2065	struct scsipi_read_toc cmd;
2066	int ntoc;
2067
2068	memset(&cmd, 0, sizeof(cmd));
2069#if 0
2070	if (len != sizeof(struct ioc_toc_header))
2071		ntoc = ((len) - sizeof(struct ioc_toc_header)) /
2072		    sizeof(struct cd_toc_entry);
2073	else
2074#endif
2075	ntoc = len;
2076	cmd.opcode = READ_TOC;
2077	if (mode == CD_MSF_FORMAT)
2078		cmd.addr_mode |= CD_MSF;
2079	cmd.resp_format = respf;
2080	cmd.from_track = start;
2081	_lto2b(ntoc, cmd.data_len);
2082	cmd.control = control;
2083
2084	return (scsipi_command(cd->sc_periph,
2085	    (void *)&cmd, sizeof(cmd), (void *)toc, len, CDRETRIES,
2086	    30000, NULL, flags | XS_CTL_DATA_IN));
2087}
2088
2089static int
2090cd_load_toc(struct cd_softc *cd, int respf, struct cd_formatted_toc *toc, int flags)
2091{
2092	int ntracks, len, error;
2093
2094	if ((error = cd_read_toc(cd, respf, 0, 0, toc, sizeof(toc->header),
2095	    flags, 0)) != 0)
2096		return (error);
2097
2098	ntracks = toc->header.ending_track - toc->header.starting_track + 1;
2099	len = (ntracks + 1) * sizeof(struct cd_toc_entry) +
2100	    sizeof(toc->header);
2101	if ((error = cd_read_toc(cd, respf, CD_MSF_FORMAT, 0, toc, len,
2102	    flags, 0)) != 0)
2103		return (error);
2104	return (0);
2105}
2106
2107/*
2108 * Get the scsi driver to send a full inquiry to the device and use the
2109 * results to fill out the disk parameter structure.
2110 */
2111static int
2112cd_get_parms(struct cd_softc *cd, int flags)
2113{
2114
2115	/*
2116	 * give a number of sectors so that sec * trks * cyls
2117	 * is <= disk_size
2118	 */
2119	if (cd_size(cd, flags) == 0)
2120		return (ENXIO);
2121	return (0);
2122}
2123
2124static int
2125cdsize(dev_t dev)
2126{
2127
2128	/* CD-ROMs are read-only. */
2129	return (-1);
2130}
2131
2132static int
2133cddump(dev_t dev, daddr_t blkno, void *va, size_t size)
2134{
2135
2136	/* Not implemented. */
2137	return (ENXIO);
2138}
2139
2140#define	dvd_copy_key(dst, src)		memcpy((dst), (src), sizeof(dvd_key))
2141#define	dvd_copy_challenge(dst, src)	memcpy((dst), (src), sizeof(dvd_challenge))
2142
2143static int
2144dvd_auth(struct cd_softc *cd, dvd_authinfo *a)
2145{
2146	struct scsipi_generic cmd;
2147	u_int8_t bf[20];
2148	int error;
2149
2150	memset(cmd.bytes, 0, 15);
2151	memset(bf, 0, sizeof(bf));
2152
2153	switch (a->type) {
2154	case DVD_LU_SEND_AGID:
2155		cmd.opcode = GPCMD_REPORT_KEY;
2156		cmd.bytes[8] = 8;
2157		cmd.bytes[9] = 0 | (0 << 6);
2158		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
2159		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2160		if (error)
2161			return (error);
2162		a->lsa.agid = bf[7] >> 6;
2163		return (0);
2164
2165	case DVD_LU_SEND_CHALLENGE:
2166		cmd.opcode = GPCMD_REPORT_KEY;
2167		cmd.bytes[8] = 16;
2168		cmd.bytes[9] = 1 | (a->lsc.agid << 6);
2169		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
2170		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2171		if (error)
2172			return (error);
2173		dvd_copy_challenge(a->lsc.chal, &bf[4]);
2174		return (0);
2175
2176	case DVD_LU_SEND_KEY1:
2177		cmd.opcode = GPCMD_REPORT_KEY;
2178		cmd.bytes[8] = 12;
2179		cmd.bytes[9] = 2 | (a->lsk.agid << 6);
2180		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
2181		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2182		if (error)
2183			return (error);
2184		dvd_copy_key(a->lsk.key, &bf[4]);
2185		return (0);
2186
2187	case DVD_LU_SEND_TITLE_KEY:
2188		cmd.opcode = GPCMD_REPORT_KEY;
2189		_lto4b(a->lstk.lba, &cmd.bytes[1]);
2190		cmd.bytes[8] = 12;
2191		cmd.bytes[9] = 4 | (a->lstk.agid << 6);
2192		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
2193		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2194		if (error)
2195			return (error);
2196		a->lstk.cpm = (bf[4] >> 7) & 1;
2197		a->lstk.cp_sec = (bf[4] >> 6) & 1;
2198		a->lstk.cgms = (bf[4] >> 4) & 3;
2199		dvd_copy_key(a->lstk.title_key, &bf[5]);
2200		return (0);
2201
2202	case DVD_LU_SEND_ASF:
2203		cmd.opcode = GPCMD_REPORT_KEY;
2204		cmd.bytes[8] = 8;
2205		cmd.bytes[9] = 5 | (a->lsasf.agid << 6);
2206		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
2207		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2208		if (error)
2209			return (error);
2210		a->lsasf.asf = bf[7] & 1;
2211		return (0);
2212
2213	case DVD_HOST_SEND_CHALLENGE:
2214		cmd.opcode = GPCMD_SEND_KEY;
2215		cmd.bytes[8] = 16;
2216		cmd.bytes[9] = 1 | (a->hsc.agid << 6);
2217		bf[1] = 14;
2218		dvd_copy_challenge(&bf[4], a->hsc.chal);
2219		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
2220		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
2221		if (error)
2222			return (error);
2223		a->type = DVD_LU_SEND_KEY1;
2224		return (0);
2225
2226	case DVD_HOST_SEND_KEY2:
2227		cmd.opcode = GPCMD_SEND_KEY;
2228		cmd.bytes[8] = 12;
2229		cmd.bytes[9] = 3 | (a->hsk.agid << 6);
2230		bf[1] = 10;
2231		dvd_copy_key(&bf[4], a->hsk.key);
2232		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
2233		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
2234		if (error) {
2235			a->type = DVD_AUTH_FAILURE;
2236			return (error);
2237		}
2238		a->type = DVD_AUTH_ESTABLISHED;
2239		return (0);
2240
2241	case DVD_INVALIDATE_AGID:
2242		cmd.opcode = GPCMD_REPORT_KEY;
2243		cmd.bytes[9] = 0x3f | (a->lsa.agid << 6);
2244		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
2245		    CDRETRIES, 30000, NULL, 0);
2246		if (error)
2247			return (error);
2248		return (0);
2249
2250	case DVD_LU_SEND_RPC_STATE:
2251		cmd.opcode = GPCMD_REPORT_KEY;
2252		cmd.bytes[8] = 8;
2253		cmd.bytes[9] = 8 | (0 << 6);
2254		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
2255		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2256		if (error)
2257			return (error);
2258		a->lrpcs.type = (bf[4] >> 6) & 3;
2259		a->lrpcs.vra = (bf[4] >> 3) & 7;
2260		a->lrpcs.ucca = (bf[4]) & 7;
2261		a->lrpcs.region_mask = bf[5];
2262		a->lrpcs.rpc_scheme = bf[6];
2263		return (0);
2264
2265	case DVD_HOST_SEND_RPC_STATE:
2266		cmd.opcode = GPCMD_SEND_KEY;
2267		cmd.bytes[8] = 8;
2268		cmd.bytes[9] = 6 | (0 << 6);
2269		bf[1] = 6;
2270		bf[4] = a->hrpcs.pdrc;
2271		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
2272		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
2273		if (error)
2274			return (error);
2275		return (0);
2276
2277	default:
2278		return (ENOTTY);
2279	}
2280}
2281
2282static int
2283dvd_read_physical(struct cd_softc *cd, dvd_struct *s)
2284{
2285	struct scsipi_generic cmd;
2286	u_int8_t bf[4 + 4 * 20], *bufp;
2287	int error;
2288	struct dvd_layer *layer;
2289	int i;
2290
2291	memset(cmd.bytes, 0, 15);
2292	memset(bf, 0, sizeof(bf));
2293	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
2294	cmd.bytes[6] = s->type;
2295	_lto2b(sizeof(bf), &cmd.bytes[7]);
2296
2297	cmd.bytes[5] = s->physical.layer_num;
2298	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
2299	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2300	if (error)
2301		return (error);
2302	for (i = 0, bufp = &bf[4], layer = &s->physical.layer[0]; i < 4;
2303	     i++, bufp += 20, layer++) {
2304		memset(layer, 0, sizeof(*layer));
2305                layer->book_version = bufp[0] & 0xf;
2306                layer->book_type = bufp[0] >> 4;
2307                layer->min_rate = bufp[1] & 0xf;
2308                layer->disc_size = bufp[1] >> 4;
2309                layer->layer_type = bufp[2] & 0xf;
2310                layer->track_path = (bufp[2] >> 4) & 1;
2311                layer->nlayers = (bufp[2] >> 5) & 3;
2312                layer->track_density = bufp[3] & 0xf;
2313                layer->linear_density = bufp[3] >> 4;
2314                layer->start_sector = _4btol(&bufp[4]);
2315                layer->end_sector = _4btol(&bufp[8]);
2316                layer->end_sector_l0 = _4btol(&bufp[12]);
2317                layer->bca = bufp[16] >> 7;
2318	}
2319	return (0);
2320}
2321
2322static int
2323dvd_read_copyright(struct cd_softc *cd, dvd_struct *s)
2324{
2325	struct scsipi_generic cmd;
2326	u_int8_t bf[8];
2327	int error;
2328
2329	memset(cmd.bytes, 0, 15);
2330	memset(bf, 0, sizeof(bf));
2331	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
2332	cmd.bytes[6] = s->type;
2333	_lto2b(sizeof(bf), &cmd.bytes[7]);
2334
2335	cmd.bytes[5] = s->copyright.layer_num;
2336	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
2337	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2338	if (error)
2339		return (error);
2340	s->copyright.cpst = bf[4];
2341	s->copyright.rmi = bf[5];
2342	return (0);
2343}
2344
2345static int
2346dvd_read_disckey(struct cd_softc *cd, dvd_struct *s)
2347{
2348	struct scsipi_generic cmd;
2349	u_int8_t *bf;
2350	int error;
2351
2352	bf = malloc(4 + 2048, M_TEMP, M_WAITOK|M_ZERO);
2353	if (bf == NULL)
2354		return EIO;
2355	memset(cmd.bytes, 0, 15);
2356	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
2357	cmd.bytes[6] = s->type;
2358	_lto2b(4 + 2048, &cmd.bytes[7]);
2359
2360	cmd.bytes[9] = s->disckey.agid << 6;
2361	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 4 + 2048,
2362	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2363	if (error == 0)
2364		memcpy(s->disckey.value, &bf[4], 2048);
2365	free(bf, M_TEMP);
2366	return error;
2367}
2368
2369static int
2370dvd_read_bca(struct cd_softc *cd, dvd_struct *s)
2371{
2372	struct scsipi_generic cmd;
2373	u_int8_t bf[4 + 188];
2374	int error;
2375
2376	memset(cmd.bytes, 0, 15);
2377	memset(bf, 0, sizeof(bf));
2378	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
2379	cmd.bytes[6] = s->type;
2380	_lto2b(sizeof(bf), &cmd.bytes[7]);
2381
2382	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
2383	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2384	if (error)
2385		return (error);
2386	s->bca.len = _2btol(&bf[0]);
2387	if (s->bca.len < 12 || s->bca.len > 188)
2388		return (EIO);
2389	memcpy(s->bca.value, &bf[4], s->bca.len);
2390	return (0);
2391}
2392
2393static int
2394dvd_read_manufact(struct cd_softc *cd, dvd_struct *s)
2395{
2396	struct scsipi_generic cmd;
2397	u_int8_t *bf;
2398	int error;
2399
2400	bf = malloc(4 + 2048, M_TEMP, M_WAITOK|M_ZERO);
2401	if (bf == NULL)
2402		return (EIO);
2403	memset(cmd.bytes, 0, 15);
2404	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
2405	cmd.bytes[6] = s->type;
2406	_lto2b(4 + 2048, &cmd.bytes[7]);
2407
2408	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 4 + 2048,
2409	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
2410	if (error == 0) {
2411		s->manufact.len = _2btol(&bf[0]);
2412		if (s->manufact.len >= 0 && s->manufact.len <= 2048)
2413			memcpy(s->manufact.value, &bf[4], s->manufact.len);
2414		else
2415			error = EIO;
2416	}
2417	free(bf, M_TEMP);
2418	return error;
2419}
2420
2421static int
2422dvd_read_struct(struct cd_softc *cd, dvd_struct *s)
2423{
2424
2425	switch (s->type) {
2426	case DVD_STRUCT_PHYSICAL:
2427		return (dvd_read_physical(cd, s));
2428	case DVD_STRUCT_COPYRIGHT:
2429		return (dvd_read_copyright(cd, s));
2430	case DVD_STRUCT_DISCKEY:
2431		return (dvd_read_disckey(cd, s));
2432	case DVD_STRUCT_BCA:
2433		return (dvd_read_bca(cd, s));
2434	case DVD_STRUCT_MANUFACT:
2435		return (dvd_read_manufact(cd, s));
2436	default:
2437		return (EINVAL);
2438	}
2439}
2440
2441static int
2442cd_mode_sense(struct cd_softc *cd, u_int8_t byte2, void *sense, size_t size,
2443    int page, int flags, int *big)
2444{
2445
2446	if (cd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) {
2447		*big = 1;
2448		return scsipi_mode_sense_big(cd->sc_periph, byte2, page, sense,
2449		    size + sizeof(struct scsi_mode_parameter_header_10),
2450		    flags, CDRETRIES, 20000);
2451	} else {
2452		*big = 0;
2453		return scsipi_mode_sense(cd->sc_periph, byte2, page, sense,
2454		    size + sizeof(struct scsi_mode_parameter_header_6),
2455		    flags, CDRETRIES, 20000);
2456	}
2457}
2458
2459static int
2460cd_mode_select(struct cd_softc *cd, u_int8_t byte2, void *sense, size_t size,
2461    int flags, int big)
2462{
2463
2464	if (big) {
2465		struct scsi_mode_parameter_header_10 *header = sense;
2466
2467		_lto2b(0, header->data_length);
2468		return scsipi_mode_select_big(cd->sc_periph, byte2, sense,
2469		    size + sizeof(struct scsi_mode_parameter_header_10),
2470		    flags, CDRETRIES, 20000);
2471	} else {
2472		struct scsi_mode_parameter_header_6 *header = sense;
2473
2474		header->data_length = 0;
2475		return scsipi_mode_select(cd->sc_periph, byte2, sense,
2476		    size + sizeof(struct scsi_mode_parameter_header_6),
2477		    flags, CDRETRIES, 20000);
2478	}
2479}
2480
2481static int
2482cd_set_pa_immed(struct cd_softc *cd, int flags)
2483{
2484	struct {
2485		union {
2486			struct scsi_mode_parameter_header_6 small;
2487			struct scsi_mode_parameter_header_10 big;
2488		} header;
2489		struct cd_audio_page page;
2490	} data;
2491	int error;
2492	uint8_t oflags;
2493	int big, byte2;
2494	struct cd_audio_page *page;
2495
2496	byte2 = SMS_DBD;
2497try_again:
2498	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
2499	    AUDIO_PAGE, flags, &big)) != 0) {
2500		if (byte2 == SMS_DBD) {
2501			/* Device may not understand DBD; retry without */
2502			byte2 = 0;
2503			goto try_again;
2504		}
2505		return (error);
2506	}
2507
2508	if (big)
2509		page = (void *)((u_long)&data.header.big +
2510				sizeof data.header.big +
2511				_2btol(data.header.big.blk_desc_len));
2512	else
2513		page = (void *)((u_long)&data.header.small +
2514				sizeof data.header.small +
2515				data.header.small.blk_desc_len);
2516
2517	oflags = page->flags;
2518	page->flags &= ~CD_PA_SOTC;
2519	page->flags |= CD_PA_IMMED;
2520	if (oflags == page->flags)
2521		return (0);
2522
2523	return (cd_mode_select(cd, SMS_PF, &data,
2524	    sizeof(struct scsi_mode_page_header) + page->pg_length,
2525	    flags, big));
2526}
2527
2528static int
2529cd_setchan(struct cd_softc *cd, int p0, int p1, int p2, int p3, int flags)
2530{
2531	struct {
2532		union {
2533			struct scsi_mode_parameter_header_6 small;
2534			struct scsi_mode_parameter_header_10 big;
2535		} header;
2536		struct cd_audio_page page;
2537	} data;
2538	int error;
2539	int big, byte2;
2540	struct cd_audio_page *page;
2541
2542	byte2 = SMS_DBD;
2543try_again:
2544	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
2545	    AUDIO_PAGE, flags, &big)) != 0) {
2546		if (byte2 == SMS_DBD) {
2547			/* Device may not understand DBD; retry without */
2548			byte2 = 0;
2549			goto try_again;
2550		}
2551		return (error);
2552	}
2553
2554	if (big)
2555		page = (void *)((u_long)&data.header.big +
2556				sizeof data.header.big +
2557				_2btol(data.header.big.blk_desc_len));
2558	else
2559		page = (void *)((u_long)&data.header.small +
2560				sizeof data.header.small +
2561				data.header.small.blk_desc_len);
2562
2563	page->port[0].channels = p0;
2564	page->port[1].channels = p1;
2565	page->port[2].channels = p2;
2566	page->port[3].channels = p3;
2567
2568	return (cd_mode_select(cd, SMS_PF, &data,
2569	    sizeof(struct scsi_mode_page_header) + page->pg_length,
2570	    flags, big));
2571}
2572
2573static int
2574cd_getvol(struct cd_softc *cd, struct ioc_vol *arg, int flags)
2575{
2576	struct {
2577		union {
2578			struct scsi_mode_parameter_header_6 small;
2579			struct scsi_mode_parameter_header_10 big;
2580		} header;
2581		struct cd_audio_page page;
2582	} data;
2583	int error;
2584	int big, byte2;
2585	struct cd_audio_page *page;
2586
2587	byte2 = SMS_DBD;
2588try_again:
2589	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
2590	    AUDIO_PAGE, flags, &big)) != 0) {
2591		if (byte2 == SMS_DBD) {
2592			/* Device may not understand DBD; retry without */
2593			byte2 = 0;
2594			goto try_again;
2595		}
2596		return (error);
2597	}
2598
2599	if (big)
2600		page = (void *)((u_long)&data.header.big +
2601				sizeof data.header.big +
2602				_2btol(data.header.big.blk_desc_len));
2603	else
2604		page = (void *)((u_long)&data.header.small +
2605				sizeof data.header.small +
2606				data.header.small.blk_desc_len);
2607
2608	arg->vol[0] = page->port[0].volume;
2609	arg->vol[1] = page->port[1].volume;
2610	arg->vol[2] = page->port[2].volume;
2611	arg->vol[3] = page->port[3].volume;
2612
2613	return (0);
2614}
2615
2616static int
2617cd_setvol(struct cd_softc *cd, const struct ioc_vol *arg, int flags)
2618{
2619	struct {
2620		union {
2621			struct scsi_mode_parameter_header_6 small;
2622			struct scsi_mode_parameter_header_10 big;
2623		} header;
2624		struct cd_audio_page page;
2625	} data, mask;
2626	int error;
2627	int big, byte2;
2628	struct cd_audio_page *page, *page2;
2629
2630	byte2 = SMS_DBD;
2631try_again:
2632	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
2633	    AUDIO_PAGE, flags, &big)) != 0) {
2634		if (byte2 == SMS_DBD) {
2635			/* Device may not understand DBD; retry without */
2636			byte2 = 0;
2637			goto try_again;
2638		}
2639		return (error);
2640	}
2641	if ((error = cd_mode_sense(cd, byte2, &mask, sizeof(mask.page),
2642	    AUDIO_PAGE|SMS_PCTRL_CHANGEABLE, flags, &big)) != 0)
2643		return (error);
2644
2645	if (big) {
2646		page = (void *)((u_long)&data.header.big +
2647				sizeof data.header.big +
2648				_2btol(data.header.big.blk_desc_len));
2649		page2 = (void *)((u_long)&mask.header.big +
2650				sizeof mask.header.big +
2651				_2btol(mask.header.big.blk_desc_len));
2652	} else {
2653		page = (void *)((u_long)&data.header.small +
2654				sizeof data.header.small +
2655				data.header.small.blk_desc_len);
2656		page2 = (void *)((u_long)&mask.header.small +
2657				sizeof mask.header.small +
2658				mask.header.small.blk_desc_len);
2659	}
2660
2661	page->port[0].volume = arg->vol[0] & page2->port[0].volume;
2662	page->port[1].volume = arg->vol[1] & page2->port[1].volume;
2663	page->port[2].volume = arg->vol[2] & page2->port[2].volume;
2664	page->port[3].volume = arg->vol[3] & page2->port[3].volume;
2665
2666	page->port[0].channels = CHANNEL_0;
2667	page->port[1].channels = CHANNEL_1;
2668
2669	return (cd_mode_select(cd, SMS_PF, &data,
2670	    sizeof(struct scsi_mode_page_header) + page->pg_length,
2671	    flags, big));
2672}
2673
2674static int
2675cd_load_unload(struct cd_softc *cd, struct ioc_load_unload *args)
2676{
2677	struct scsipi_load_unload cmd;
2678
2679	memset(&cmd, 0, sizeof(cmd));
2680	cmd.opcode = LOAD_UNLOAD;
2681	cmd.options = args->options;    /* ioctl uses MMC values */
2682	cmd.slot = args->slot;
2683
2684	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
2685	    CDRETRIES, 200000, NULL, 0));
2686}
2687
2688static int
2689cd_setblksize(struct cd_softc *cd)
2690{
2691	struct {
2692		union {
2693			struct scsi_mode_parameter_header_6 small;
2694			struct scsi_mode_parameter_header_10 big;
2695		} header;
2696		struct scsi_general_block_descriptor blk_desc;
2697	} data;
2698	int error;
2699	int big, bsize;
2700	struct scsi_general_block_descriptor *bdesc;
2701
2702	if ((error = cd_mode_sense(cd, 0, &data, sizeof(data.blk_desc), 0, 0,
2703	    &big)) != 0)
2704		return (error);
2705
2706	if (big) {
2707		bdesc = (void *)(&data.header.big + 1);
2708		bsize = _2btol(data.header.big.blk_desc_len);
2709	} else {
2710		bdesc = (void *)(&data.header.small + 1);
2711		bsize = data.header.small.blk_desc_len;
2712	}
2713
2714	if (bsize == 0) {
2715printf("cd_setblksize: trying to change bsize, but no blk_desc\n");
2716		return (EINVAL);
2717	}
2718	if (_3btol(bdesc->blklen) == 2048) {
2719printf("cd_setblksize: trying to change bsize, but blk_desc is correct\n");
2720		return (EINVAL);
2721	}
2722
2723	_lto3b(2048, bdesc->blklen);
2724
2725	return (cd_mode_select(cd, SMS_PF, &data, sizeof(data.blk_desc), 0,
2726	    big));
2727}
2728
2729
2730static int
2731mmc_profile2class(uint16_t mmc_profile)
2732{
2733	switch (mmc_profile) {
2734	case 0x01 : /* SCSI discs */
2735	case 0x02 :
2736		/* this can't happen really, cd.c wouldn't have matched */
2737		return MMC_CLASS_DISC;
2738	case 0x03 : /* Magneto Optical with sector erase */
2739	case 0x04 : /* Magneto Optical write once        */
2740	case 0x05 : /* Advance Storage Magneto Optical   */
2741		return MMC_CLASS_MO;
2742	case 0x00 : /* Unknown MMC profile, can also be CD-ROM */
2743	case 0x08 : /* CD-ROM  */
2744	case 0x09 : /* CD-R    */
2745	case 0x0a : /* CD-RW   */
2746		return MMC_CLASS_CD;
2747	case 0x10 : /* DVD-ROM */
2748	case 0x11 : /* DVD-R   */
2749	case 0x12 : /* DVD-RAM */
2750	case 0x13 : /* DVD-RW restricted overwrite */
2751	case 0x14 : /* DVD-RW sequential */
2752	case 0x1a : /* DVD+RW  */
2753	case 0x1b : /* DVD+R   */
2754	case 0x2a : /* DVD+RW Dual layer */
2755	case 0x2b : /* DVD+R Dual layer */
2756	case 0x50 : /* HD DVD-ROM */
2757	case 0x51 : /* HD DVD-R   */
2758	case 0x52 : /* HD DVD-RW; DVD-RAM like */
2759		return MMC_CLASS_DVD;
2760	case 0x40 : /* BD-ROM  */
2761	case 0x41 : /* BD-R Sequential recording (SRM) */
2762	case 0x42 : /* BD-R Ramdom Recording (RRM) */
2763	case 0x43 : /* BD-RE */
2764		return MMC_CLASS_BD;
2765	}
2766	return MMC_CLASS_UNKN;
2767}
2768
2769
2770/*
2771 * Drive/media combination is reflected in a series of features that can
2772 * either be current or dormant. We try to make sense out of them to create a
2773 * set of easy to use flags that abstract the device/media capabilities.
2774 */
2775
2776static void
2777mmc_process_feature(struct mmc_discinfo *mmc_discinfo,
2778		    uint16_t feature, int cur, uint8_t *rpos)
2779{
2780	uint32_t blockingnr;
2781	uint64_t flags;
2782
2783	if (cur == 1) {
2784		flags = mmc_discinfo->mmc_cur;
2785	} else {
2786		flags = mmc_discinfo->mmc_cap;
2787	}
2788
2789	switch (feature) {
2790	case 0x0010 :	/* random readable feature */
2791		blockingnr  =  rpos[5] | (rpos[4] << 8);
2792		if (blockingnr > 1)
2793			flags |= MMC_CAP_PACKET;
2794
2795		/* RW error page */
2796		break;
2797	case 0x0020 :	/* random writable feature */
2798		flags |= MMC_CAP_RECORDABLE;
2799		flags |= MMC_CAP_REWRITABLE;
2800		blockingnr  =  rpos[9] | (rpos[8] << 8);
2801		if (blockingnr > 1)
2802			flags |= MMC_CAP_PACKET;
2803		break;
2804	case 0x0021 :	/* incremental streaming write feature */
2805		flags |= MMC_CAP_RECORDABLE;
2806		flags |= MMC_CAP_SEQUENTIAL;
2807		if (cur)
2808			mmc_discinfo->link_block_penalty = rpos[4];
2809		if (rpos[2] & 1)
2810			flags |= MMC_CAP_ZEROLINKBLK;
2811		break;
2812	case 0x0022 : 	/* (obsolete) erase support feature */
2813		flags |= MMC_CAP_RECORDABLE;
2814		flags |= MMC_CAP_ERASABLE;
2815		break;
2816	case 0x0023 :	/* formatting media support feature */
2817		flags |= MMC_CAP_RECORDABLE;
2818		flags |= MMC_CAP_FORMATTABLE;
2819		break;
2820	case 0x0024 :	/* hardware assised defect management feature */
2821		flags |= MMC_CAP_HW_DEFECTFREE;
2822		break;
2823	case 0x0025 : 	/* write once */
2824		flags |= MMC_CAP_RECORDABLE;
2825		break;
2826	case 0x0026 :	/* restricted overwrite feature */
2827		flags |= MMC_CAP_RECORDABLE;
2828		flags |= MMC_CAP_REWRITABLE;
2829		flags |= MMC_CAP_STRICTOVERWRITE;
2830		break;
2831	case 0x0028 :	/* MRW formatted media support feature */
2832		flags |= MMC_CAP_MRW;
2833		break;
2834	case 0x002b :	/* DVD+R read (and opt. write) support */
2835		flags |= MMC_CAP_SEQUENTIAL;
2836		if (rpos[0] & 1) /* write support */
2837			flags |= MMC_CAP_RECORDABLE;
2838		break;
2839	case 0x002c :	/* rigid restricted overwrite feature */
2840		flags |= MMC_CAP_RECORDABLE;
2841		flags |= MMC_CAP_REWRITABLE;
2842		flags |= MMC_CAP_STRICTOVERWRITE;
2843		if (rpos[0] & 1) /* blank bit */
2844			flags |= MMC_CAP_BLANKABLE;
2845		break;
2846	case 0x002d :	/* track at once recording feature */
2847		flags |= MMC_CAP_RECORDABLE;
2848		flags |= MMC_CAP_SEQUENTIAL;
2849		break;
2850	case 0x002f :	/* DVD-R/-RW write feature */
2851		flags |= MMC_CAP_RECORDABLE;
2852		if (rpos[0] & 2) /* DVD-RW bit */
2853			flags |= MMC_CAP_BLANKABLE;
2854		break;
2855	case 0x0038 :	/* BD-R SRM with pseudo overwrite */
2856		flags |= MMC_CAP_PSEUDOOVERWRITE;
2857		break;
2858	default :
2859		/* ignore */
2860		break;
2861	}
2862
2863	if (cur == 1) {
2864		mmc_discinfo->mmc_cur = flags;
2865	} else {
2866		mmc_discinfo->mmc_cap = flags;
2867	}
2868}
2869
2870static int
2871mmc_getdiscinfo_cdrom(struct scsipi_periph *periph,
2872		      struct mmc_discinfo *mmc_discinfo)
2873{
2874	struct scsipi_read_toc      gtoc_cmd;
2875	struct scsipi_toc_header   *toc_hdr;
2876	struct scsipi_toc_msinfo   *toc_msinfo;
2877	const uint32_t buffer_size = 1024;
2878	uint32_t req_size;
2879	uint8_t  *buffer;
2880	int error, flags;
2881
2882	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
2883	/*
2884	 * Fabricate mmc_discinfo for CD-ROM. Some values are really `dont
2885	 * care' but others might be of interest to programs.
2886	 */
2887
2888	mmc_discinfo->disc_state	 = MMC_STATE_FULL;
2889	mmc_discinfo->last_session_state = MMC_STATE_FULL;
2890	mmc_discinfo->bg_format_state    = MMC_BGFSTATE_COMPLETED;
2891	mmc_discinfo->link_block_penalty = 7;	/* not relevant */
2892
2893	/* get number of sessions and first tracknr in last session */
2894	flags = XS_CTL_DATA_IN;
2895	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
2896	gtoc_cmd.opcode      = READ_TOC;
2897	gtoc_cmd.addr_mode   = CD_MSF;		/* not relevant        */
2898	gtoc_cmd.resp_format = CD_TOC_MSINFO;	/* multisession info   */
2899	gtoc_cmd.from_track  = 0;		/* reserved, must be 0 */
2900	req_size = sizeof(*toc_hdr) + sizeof(*toc_msinfo);
2901	_lto2b(req_size, gtoc_cmd.data_len);
2902
2903	error = scsipi_command(periph,
2904		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
2905		(void *)buffer,    req_size,
2906		CDRETRIES, 30000, NULL, flags);
2907	if (error)
2908		goto out;
2909	toc_hdr    = (struct scsipi_toc_header *)  buffer;
2910	toc_msinfo = (struct scsipi_toc_msinfo *) (buffer + 4);
2911	mmc_discinfo->num_sessions = toc_hdr->last - toc_hdr->first + 1;
2912	mmc_discinfo->first_track  = toc_hdr->first;
2913	mmc_discinfo->first_track_last_session = toc_msinfo->tracknr;
2914
2915	/* get last track of last session */
2916	flags = XS_CTL_DATA_IN;
2917	gtoc_cmd.resp_format  = CD_TOC_FORM;	/* formatted toc */
2918	req_size = sizeof(*toc_hdr);
2919	_lto2b(req_size, gtoc_cmd.data_len);
2920
2921	error = scsipi_command(periph,
2922		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
2923		(void *)buffer,    req_size,
2924		CDRETRIES, 30000, NULL, flags);
2925	if (error)
2926		goto out;
2927	toc_hdr    = (struct scsipi_toc_header *) buffer;
2928	mmc_discinfo->last_track_last_session = toc_hdr->last;
2929	mmc_discinfo->num_tracks = toc_hdr->last - toc_hdr->first + 1;
2930
2931	/* TODO how to handle disc_barcode and disc_id */
2932	/* done */
2933
2934out:
2935	free(buffer, M_TEMP);
2936	return error;
2937}
2938
2939static int
2940mmc_getdiscinfo_dvdrom(struct scsipi_periph *periph,
2941		       struct mmc_discinfo *mmc_discinfo)
2942{
2943	struct scsipi_read_toc   gtoc_cmd;
2944	struct scsipi_toc_header toc_hdr;
2945	uint32_t req_size;
2946	int error, flags;
2947
2948	/*
2949	 * Fabricate mmc_discinfo for DVD-ROM. Some values are really `dont
2950	 * care' but others might be of interest to programs.
2951	 */
2952
2953	mmc_discinfo->disc_state	 = MMC_STATE_FULL;
2954	mmc_discinfo->last_session_state = MMC_STATE_FULL;
2955	mmc_discinfo->bg_format_state    = MMC_BGFSTATE_COMPLETED;
2956	mmc_discinfo->link_block_penalty = 16;	/* not relevant */
2957
2958	/* get number of sessions and first tracknr in last session */
2959	flags = XS_CTL_DATA_IN;
2960	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
2961	gtoc_cmd.opcode      = READ_TOC;
2962	gtoc_cmd.addr_mode   = 0;		/* LBA                 */
2963	gtoc_cmd.resp_format = CD_TOC_FORM;	/* multisession info   */
2964	gtoc_cmd.from_track  = 1;		/* first track         */
2965	req_size = sizeof(toc_hdr);
2966	_lto2b(req_size, gtoc_cmd.data_len);
2967
2968	error = scsipi_command(periph,
2969		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
2970		(void *)&toc_hdr,  req_size,
2971		CDRETRIES, 30000, NULL, flags);
2972	if (error)
2973		return error;
2974
2975	/* DVD-ROM squashes the track/session space */
2976	mmc_discinfo->num_sessions = toc_hdr.last - toc_hdr.first + 1;
2977	mmc_discinfo->num_tracks   = mmc_discinfo->num_sessions;
2978	mmc_discinfo->first_track  = toc_hdr.first;
2979	mmc_discinfo->first_track_last_session = toc_hdr.last;
2980	mmc_discinfo->last_track_last_session  = toc_hdr.last;
2981
2982	/* TODO how to handle disc_barcode and disc_id */
2983	/* done */
2984	return 0;
2985}
2986
2987static int
2988mmc_getdiscinfo(struct scsipi_periph *periph,
2989		struct mmc_discinfo *mmc_discinfo)
2990{
2991	struct scsipi_get_configuration   gc_cmd;
2992	struct scsipi_get_conf_data      *gc;
2993	struct scsipi_get_conf_feature   *gcf;
2994	struct scsipi_read_discinfo       di_cmd;
2995	struct scsipi_read_discinfo_data  di __aligned(2);
2996	const uint32_t buffer_size = 1024;
2997	uint32_t feat_tbl_len, pos;
2998	u_long   last_lba = 0;
2999	uint8_t  *buffer, *fpos;
3000	int feature, last_feature, features_len, feature_cur, feature_len;
3001	int lsb, msb, error, flags;
3002
3003	feat_tbl_len = buffer_size;
3004
3005	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
3006
3007	/* initialise structure */
3008	memset(mmc_discinfo, 0, sizeof(struct mmc_discinfo));
3009	mmc_discinfo->mmc_profile = 0x00;	/* unknown */
3010	mmc_discinfo->mmc_class   = MMC_CLASS_UNKN;
3011	mmc_discinfo->mmc_cur     = 0;
3012	mmc_discinfo->mmc_cap     = 0;
3013	mmc_discinfo->link_block_penalty = 0;
3014
3015	/* determine mmc profile and class */
3016	flags = XS_CTL_DATA_IN;
3017	memset(&gc_cmd, 0, sizeof(gc_cmd));
3018	gc_cmd.opcode = GET_CONFIGURATION;
3019	_lto2b(GET_CONF_NO_FEATURES_LEN, gc_cmd.data_len);
3020
3021	gc = (struct scsipi_get_conf_data *) buffer;
3022
3023	error = scsipi_command(periph,
3024		(void *)&gc_cmd, sizeof(gc_cmd),
3025		(void *) gc,     GET_CONF_NO_FEATURES_LEN,
3026		CDRETRIES, 30000, NULL, flags);
3027	if (error)
3028		goto out;
3029
3030	mmc_discinfo->mmc_profile = _2btol(gc->mmc_profile);
3031	mmc_discinfo->mmc_class = mmc_profile2class(mmc_discinfo->mmc_profile);
3032
3033	/* assume 2048 sector size unless told otherwise */
3034	mmc_discinfo->sector_size = 2048;
3035	error = read_cd_capacity(periph, &mmc_discinfo->sector_size, &last_lba);
3036	if (error)
3037		goto out;
3038
3039	mmc_discinfo->last_possible_lba = (uint32_t) last_lba;
3040
3041	/* Read in all features to determine device capabilities */
3042	last_feature = feature = 0;
3043	do {
3044		/* determine mmc profile and class */
3045		flags = XS_CTL_DATA_IN;
3046		memset(&gc_cmd, 0, sizeof(gc_cmd));
3047		gc_cmd.opcode = GET_CONFIGURATION;
3048		_lto2b(last_feature, gc_cmd.start_at_feature);
3049		_lto2b(feat_tbl_len, gc_cmd.data_len);
3050		memset(gc, 0, feat_tbl_len);
3051
3052		error = scsipi_command(periph,
3053			(void *)&gc_cmd, sizeof(gc_cmd),
3054			(void *) gc,     feat_tbl_len,
3055			CDRETRIES, 30000, NULL, flags);
3056		if (error) {
3057			/* ieeek... break out of loop... i dunno what to do */
3058			break;
3059		}
3060
3061		features_len = _4btol(gc->data_len);
3062		if (features_len < 4 || features_len > feat_tbl_len)
3063			break;
3064
3065		pos  = 0;
3066		fpos = &gc->feature_desc[0];
3067		while (pos < features_len - 4) {
3068			gcf = (struct scsipi_get_conf_feature *) fpos;
3069
3070			feature     = _2btol(gcf->featurecode);
3071			feature_cur = gcf->flags & 1;
3072			feature_len = gcf->additional_length;
3073
3074			mmc_process_feature(mmc_discinfo,
3075					    feature, feature_cur,
3076					    gcf->feature_dependent);
3077
3078			last_feature = MAX(last_feature, feature);
3079#ifdef DIAGNOSTIC
3080			/* assert((feature_len & 3) == 0); */
3081			if ((feature_len & 3) != 0) {
3082				printf("feature %d having length %d\n",
3083					feature, feature_len);
3084			}
3085#endif
3086
3087			pos  += 4 + feature_len;
3088			fpos += 4 + feature_len;
3089		}
3090		/* unlikely to ever grow past our 1kb buffer */
3091	} while (features_len >= 0xffff);
3092
3093	/*
3094	 * Fixup CD-RW drives that are on crack.
3095	 *
3096	 * Some drives report the capability to incrementally write
3097	 * sequentially on CD-R(W) media...  nice, but this should not be
3098	 * active for a fixed packet formatted CD-RW media. Other report the
3099	 * ability of HW_DEFECTFREE even when the media is NOT MRW
3100	 * formatted....
3101	 */
3102	if (mmc_discinfo->mmc_profile == 0x0a) {
3103		if ((mmc_discinfo->mmc_cur & MMC_CAP_SEQUENTIAL) == 0)
3104			mmc_discinfo->mmc_cur |= MMC_CAP_STRICTOVERWRITE;
3105		if (mmc_discinfo->mmc_cur & MMC_CAP_STRICTOVERWRITE)
3106			mmc_discinfo->mmc_cur &= ~MMC_CAP_SEQUENTIAL;
3107		if (mmc_discinfo->mmc_cur & MMC_CAP_MRW) {
3108			mmc_discinfo->mmc_cur &= ~MMC_CAP_SEQUENTIAL;
3109			mmc_discinfo->mmc_cur &= ~MMC_CAP_STRICTOVERWRITE;
3110		} else {
3111			mmc_discinfo->mmc_cur &= ~MMC_CAP_HW_DEFECTFREE;
3112		}
3113	}
3114	if (mmc_discinfo->mmc_profile == 0x09) {
3115		mmc_discinfo->mmc_cur &= ~MMC_CAP_REWRITABLE;
3116	}
3117
3118#ifdef DEBUG
3119	printf("CD mmc %d, mmc_cur 0x%"PRIx64", mmc_cap 0x%"PRIx64"\n",
3120		mmc_discinfo->mmc_profile,
3121	 	mmc_discinfo->mmc_cur, mmc_discinfo->mmc_cap);
3122#endif
3123
3124	/* read in disc state and number of sessions and tracks */
3125	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
3126	memset(&di_cmd, 0, sizeof(di_cmd));
3127	di_cmd.opcode = READ_DISCINFO;
3128	di_cmd.data_len[1] = READ_DISCINFO_BIGSIZE;
3129
3130	error = scsipi_command(periph,
3131		(void *)&di_cmd, sizeof(di_cmd),
3132		(void *)&di,     READ_DISCINFO_BIGSIZE,
3133		CDRETRIES, 30000, NULL, flags);
3134
3135	if (error) {
3136		/* discinfo call failed, emulate for cd-rom/dvd-rom */
3137		if (mmc_discinfo->mmc_profile == 0x08) /* CD-ROM */
3138			return mmc_getdiscinfo_cdrom(periph, mmc_discinfo);
3139		if (mmc_discinfo->mmc_profile == 0x10) /* DVD-ROM */
3140			return mmc_getdiscinfo_dvdrom(periph, mmc_discinfo);
3141		/* CD/DVD drive is violating specs */
3142		error = EIO;
3143		goto out;
3144	}
3145
3146	/* call went OK */
3147	mmc_discinfo->disc_state         =  di.disc_state & 3;
3148	mmc_discinfo->last_session_state = (di.disc_state >> 2) & 3;
3149	mmc_discinfo->bg_format_state    = (di.disc_state2 & 3);
3150
3151	lsb = di.num_sessions_lsb;
3152	msb = di.num_sessions_msb;
3153	mmc_discinfo->num_sessions = lsb | (msb << 8);
3154
3155	mmc_discinfo->first_track = di.first_track;
3156	lsb = di.first_track_last_session_lsb;
3157	msb = di.first_track_last_session_msb;
3158	mmc_discinfo->first_track_last_session = lsb | (msb << 8);
3159	lsb = di.last_track_last_session_lsb;
3160	msb = di.last_track_last_session_msb;
3161	mmc_discinfo->last_track_last_session  = lsb | (msb << 8);
3162
3163	mmc_discinfo->num_tracks = mmc_discinfo->last_track_last_session -
3164		mmc_discinfo->first_track + 1;
3165
3166	/* set misc. flags and parameters from this disc info */
3167	if (di.disc_state  &  16)
3168		mmc_discinfo->mmc_cur |= MMC_CAP_BLANKABLE;
3169
3170	if (di.disc_state2 & 128) {
3171		mmc_discinfo->disc_id = _4btol(di.discid);
3172		mmc_discinfo->disc_flags |= MMC_DFLAGS_DISCIDVALID;
3173	}
3174	if (di.disc_state2 &  64) {
3175		mmc_discinfo->disc_barcode = _8btol(di.disc_bar_code);
3176		mmc_discinfo->disc_flags |= MMC_DFLAGS_BARCODEVALID;
3177	}
3178	if (di.disc_state2 &  32)
3179		mmc_discinfo->disc_flags |= MMC_DFLAGS_UNRESTRICTED;
3180
3181	if (di.disc_state2 &  16) {
3182		mmc_discinfo->application_code = di.application_code;
3183		mmc_discinfo->disc_flags |= MMC_DFLAGS_APPCODEVALID;
3184	}
3185
3186	/* done */
3187
3188out:
3189	free(buffer, M_TEMP);
3190	return error;
3191}
3192
3193static int
3194mmc_gettrackinfo_cdrom(struct scsipi_periph *periph,
3195		       struct mmc_trackinfo *trackinfo)
3196{
3197	struct scsipi_read_toc            gtoc_cmd;
3198	struct scsipi_toc_header         *toc_hdr;
3199	struct scsipi_toc_rawtoc         *rawtoc;
3200	uint32_t track_start, track_size;
3201	uint32_t last_recorded, next_writable;
3202	uint32_t lba, next_track_start, lead_out;
3203	const uint32_t buffer_size = 4 * 1024;	/* worst case TOC estimate */
3204	uint8_t *buffer;
3205	uint8_t track_sessionnr, sessionnr, adr, tno, point;
3206	uint8_t control, tmin, tsec, tframe, pmin, psec, pframe;
3207	int size, req_size;
3208	int error, flags;
3209
3210	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
3211
3212	/*
3213	 * Emulate read trackinfo for CD-ROM using the raw-TOC.
3214	 *
3215	 * Not all information is present and this presents a problem.  Track
3216	 * starts are known for each track but other values are deducted.
3217	 *
3218	 * For a complete overview of `magic' values used here, see the
3219	 * SCSI/ATAPI MMC documentation. Note that the `magic' values have no
3220	 * names, they are specified as numbers.
3221	 */
3222
3223	/* get raw toc to process, first header to check size */
3224	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
3225	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
3226	gtoc_cmd.opcode      = READ_TOC;
3227	gtoc_cmd.addr_mode   = CD_MSF;		/* not relevant     */
3228	gtoc_cmd.resp_format = CD_TOC_RAW;	/* raw toc          */
3229	gtoc_cmd.from_track  = 1;		/* first session    */
3230	req_size = sizeof(*toc_hdr);
3231	_lto2b(req_size, gtoc_cmd.data_len);
3232
3233	error = scsipi_command(periph,
3234		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
3235		(void *)buffer,    req_size,
3236		CDRETRIES, 30000, NULL, flags);
3237	if (error)
3238		goto out;
3239	toc_hdr = (struct scsipi_toc_header *) buffer;
3240	if (_2btol(toc_hdr->length) > buffer_size - 2) {
3241#ifdef DIAGNOSTIC
3242		printf("increase buffersize in mmc_readtrackinfo_cdrom\n");
3243#endif
3244		error = ENOBUFS;
3245		goto out;
3246	}
3247
3248	/* read in complete raw toc */
3249	req_size = _2btol(toc_hdr->length);
3250	req_size = 2*((req_size + 1) / 2);	/* for ATAPI */
3251	_lto2b(req_size, gtoc_cmd.data_len);
3252
3253	error = scsipi_command(periph,
3254		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
3255		(void *)buffer,    req_size,
3256		CDRETRIES, 30000, NULL, flags);
3257	if (error)
3258		goto out;
3259
3260	toc_hdr = (struct scsipi_toc_header *) buffer;
3261	rawtoc  = (struct scsipi_toc_rawtoc *) (buffer + 4);
3262
3263	track_start      = 0;
3264	track_size       = 0;
3265	last_recorded    = 0;
3266	next_writable    = 0;
3267	flags            = 0;
3268
3269	next_track_start = 0;
3270	track_sessionnr  = MAXTRACK;	/* by definition */
3271	lead_out         = 0;
3272
3273	size = req_size - sizeof(struct scsipi_toc_header) + 1;
3274	while (size > 0) {
3275		/* get track start and session end */
3276		tno       = rawtoc->tno;
3277		sessionnr = rawtoc->sessionnr;
3278		adr       = rawtoc->adrcontrol >> 4;
3279		control   = rawtoc->adrcontrol & 0xf;
3280		point     = rawtoc->point;
3281		tmin      = rawtoc->min;
3282		tsec      = rawtoc->sec;
3283		tframe    = rawtoc->frame;
3284		pmin      = rawtoc->pmin;
3285		psec      = rawtoc->psec;
3286		pframe    = rawtoc->pframe;
3287
3288		if (tno == 0 && sessionnr && adr == 1) {
3289			lba = hmsf2lba(0, pmin, psec, pframe);
3290			if (point == trackinfo->tracknr) {
3291				track_start = lba;
3292				track_sessionnr = sessionnr;
3293			}
3294			if (point == trackinfo->tracknr + 1) {
3295				/* estimate size */
3296				track_size = lba - track_start;
3297				next_track_start = lba;
3298			}
3299			if (point == 0xa2) {
3300				lead_out = lba;
3301			}
3302			if (point <= 0x63) {
3303				/* CD's ok, DVD are glued */
3304				/* last_tracknr = point; */
3305			}
3306			if (sessionnr == track_sessionnr) {
3307				last_recorded = lead_out;
3308			}
3309		}
3310		if (tno == 0 && sessionnr && adr == 5) {
3311			lba = hmsf2lba(0, tmin, tsec, tframe);
3312			if (sessionnr == track_sessionnr) {
3313				next_writable = lba;
3314			}
3315		}
3316
3317		if ((control & (3<<2)) == 4)		/* 01xxb */
3318			flags |= MMC_TRACKINFO_DATA;
3319		if ((control & (1<<2)) == 0) {		/* x0xxb */
3320			flags |= MMC_TRACKINFO_AUDIO;
3321			if (control & 1)		/* xxx1b */
3322				flags |= MMC_TRACKINFO_PRE_EMPH;
3323		}
3324
3325		rawtoc++;
3326		size -= sizeof(struct scsipi_toc_rawtoc);
3327	}
3328
3329	/* process found values; some voodoo */
3330	/* if no tracksize tracknr is the last of the disc */
3331	if ((track_size == 0) && last_recorded) {
3332		track_size = last_recorded - track_start;
3333	}
3334	/* if last_recorded < tracksize, tracksize is overestimated */
3335	if (last_recorded) {
3336		if (last_recorded - track_start <= track_size) {
3337			track_size = last_recorded - track_start;
3338			flags |= MMC_TRACKINFO_LRA_VALID;
3339		}
3340	}
3341	/* check if its a the last track of the sector */
3342	if (next_writable) {
3343		if (next_track_start > next_writable)
3344			flags |= MMC_TRACKINFO_NWA_VALID;
3345	}
3346
3347	/* no flag set -> no values */
3348	if ((flags & MMC_TRACKINFO_LRA_VALID) == 0)
3349		last_recorded = 0;
3350	if ((flags & MMC_TRACKINFO_NWA_VALID) == 0)
3351		next_writable = 0;
3352
3353	/* fill in */
3354	/* trackinfo->tracknr preserved */
3355	trackinfo->sessionnr  = track_sessionnr;
3356	trackinfo->track_mode = 7;	/* data, incremental  */
3357	trackinfo->data_mode  = 8;	/* 2048 bytes mode1   */
3358
3359	trackinfo->flags = flags;
3360	trackinfo->track_start   = track_start;
3361	trackinfo->next_writable = next_writable;
3362	trackinfo->free_blocks   = 0;
3363	trackinfo->packet_size   = 1;
3364	trackinfo->track_size    = track_size;
3365	trackinfo->last_recorded = last_recorded;
3366
3367out:
3368	free(buffer, M_TEMP);
3369	return error;
3370
3371}
3372
3373static int
3374mmc_gettrackinfo_dvdrom(struct scsipi_periph *periph,
3375			struct mmc_trackinfo *trackinfo)
3376{
3377	struct scsipi_read_toc            gtoc_cmd;
3378	struct scsipi_toc_header         *toc_hdr;
3379	struct scsipi_toc_formatted      *toc;
3380	uint32_t tracknr, track_start, track_size;
3381	uint32_t lba, lead_out;
3382	const uint32_t buffer_size = 4 * 1024;	/* worst case TOC estimate */
3383	uint8_t *buffer;
3384	uint8_t control, last_tracknr;
3385	int size, req_size;
3386	int error, flags;
3387
3388
3389	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
3390	/*
3391	 * Emulate read trackinfo for DVD-ROM. We can't use the raw-TOC as the
3392	 * CD-ROM emulation uses since the specification tells us that no such
3393	 * thing is defined for DVD's. The reason for this is due to the large
3394	 * number of tracks and that would clash with the `magic' values. This
3395	 * suxs.
3396	 *
3397	 * Not all information is present and this presents a problem.
3398	 * Track starts are known for each track but other values are
3399	 * deducted.
3400	 */
3401
3402	/* get formatted toc to process, first header to check size */
3403	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
3404	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
3405	gtoc_cmd.opcode      = READ_TOC;
3406	gtoc_cmd.addr_mode   = 0;		/* lba's please     */
3407	gtoc_cmd.resp_format = CD_TOC_FORM;	/* formatted toc    */
3408	gtoc_cmd.from_track  = 1;		/* first track      */
3409	req_size = sizeof(*toc_hdr);
3410	_lto2b(req_size, gtoc_cmd.data_len);
3411
3412	error = scsipi_command(periph,
3413		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
3414		(void *)buffer,    req_size,
3415		CDRETRIES, 30000, NULL, flags);
3416	if (error)
3417		goto out;
3418	toc_hdr = (struct scsipi_toc_header *) buffer;
3419	if (_2btol(toc_hdr->length) > buffer_size - 2) {
3420#ifdef DIAGNOSTIC
3421		printf("incease buffersize in mmc_readtrackinfo_dvdrom\n");
3422#endif
3423		error = ENOBUFS;
3424		goto out;
3425	}
3426
3427	/* read in complete formatted toc */
3428	req_size = _2btol(toc_hdr->length);
3429	_lto2b(req_size, gtoc_cmd.data_len);
3430
3431	error = scsipi_command(periph,
3432		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
3433		(void *)buffer,    req_size,
3434		CDRETRIES, 30000, NULL, flags);
3435	if (error)
3436		goto out;
3437
3438	toc_hdr = (struct scsipi_toc_header *)     buffer;
3439	toc     = (struct scsipi_toc_formatted *) (buffer + 4);
3440
3441	/* as in read disc info, all sessions are converted to tracks      */
3442	/* track 1..  -> offsets, sizes can be (rougly) estimated (16 ECC) */
3443	/* last track -> we got the size from the lead-out                 */
3444
3445	tracknr      = 0;
3446	last_tracknr = toc_hdr->last;
3447	track_start  = 0;
3448	track_size   = 0;
3449	lead_out     = 0;
3450	flags        = 0;
3451
3452	size = req_size - sizeof(struct scsipi_toc_header) + 1;
3453	while (size > 0) {
3454		/* remember, DVD-ROM: tracknr == sessionnr */
3455		lba     = _4btol(toc->msf_lba);
3456		tracknr = toc->tracknr;
3457		control = toc->adrcontrol & 0xf;
3458
3459		if (trackinfo->tracknr == tracknr) {
3460			track_start = lba;
3461		}
3462		if (trackinfo->tracknr == tracknr+1) {
3463			track_size  = lba - track_start;
3464			track_size -= 16;	/* link block ? */
3465		}
3466		if (tracknr == 0xAA) {
3467			lead_out = lba;
3468		}
3469
3470		if ((control & (3<<2)) == 4)		/* 01xxb */
3471			flags |= MMC_TRACKINFO_DATA;
3472		if ((control & (1<<2)) == 0) {		/* x0xxb */
3473			flags |= MMC_TRACKINFO_AUDIO;
3474			if (control & (1<<3))		/* 10xxb */
3475				flags |= MMC_TRACKINFO_AUDIO_4CHAN;
3476			if (control & 1)		/* xxx1b */
3477				flags |= MMC_TRACKINFO_PRE_EMPH;
3478		}
3479
3480		toc++;
3481		size -= sizeof(struct scsipi_toc_formatted);
3482	}
3483	if (trackinfo->tracknr == last_tracknr) {
3484		track_size = lead_out - track_start;
3485	}
3486
3487	/* fill in */
3488	/* trackinfo->tracknr preserved */
3489	trackinfo->sessionnr  = trackinfo->tracknr;
3490	trackinfo->track_mode = 0;	/* unknown */
3491	trackinfo->data_mode  = 8;	/* 2048 bytes mode1   */
3492
3493	trackinfo->flags         = flags;
3494	trackinfo->track_start   = track_start;
3495	trackinfo->next_writable = 0;
3496	trackinfo->free_blocks   = 0;
3497	trackinfo->packet_size   = 16;	/* standard length 16 blocks ECC */
3498	trackinfo->track_size    = track_size;
3499	trackinfo->last_recorded = 0;
3500
3501out:
3502	free(buffer, M_TEMP);
3503	return error;
3504}
3505
3506static int
3507mmc_gettrackinfo(struct scsipi_periph *periph,
3508		 struct mmc_trackinfo *trackinfo)
3509{
3510	struct scsipi_read_trackinfo      ti_cmd;
3511	struct scsipi_read_trackinfo_data ti __aligned(2);
3512	struct scsipi_get_configuration   gc_cmd;
3513	struct scsipi_get_conf_data       gc __aligned(2);
3514	int error, flags;
3515	int mmc_profile;
3516
3517	/* set up SCSI call with track number from trackinfo.tracknr */
3518	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
3519	memset(&ti_cmd, 0, sizeof(ti_cmd));
3520	ti_cmd.opcode    = READ_TRACKINFO;
3521	ti_cmd.addr_type = READ_TRACKINFO_ADDR_TRACK;
3522	ti_cmd.data_len[1] = READ_TRACKINFO_RETURNSIZE;
3523
3524	/* trackinfo.tracknr contains number of tracks to query */
3525	_lto4b(trackinfo->tracknr, ti_cmd.address);
3526	error = scsipi_command(periph,
3527		(void *)&ti_cmd, sizeof(ti_cmd),
3528		(void *)&ti,     READ_TRACKINFO_RETURNSIZE,
3529		CDRETRIES, 30000, NULL, flags);
3530
3531	if (error) {
3532		/* trackinfo call failed, emulate for cd-rom/dvd-rom */
3533		/* first determine mmc profile */
3534		flags = XS_CTL_DATA_IN;
3535		memset(&gc_cmd, 0, sizeof(gc_cmd));
3536		gc_cmd.opcode = GET_CONFIGURATION;
3537		_lto2b(GET_CONF_NO_FEATURES_LEN, gc_cmd.data_len);
3538
3539		error = scsipi_command(periph,
3540			(void *)&gc_cmd, sizeof(gc_cmd),
3541			(void *)&gc,     GET_CONF_NO_FEATURES_LEN,
3542			CDRETRIES, 30000, NULL, flags);
3543		if (error)
3544			return error;
3545		mmc_profile = _2btol(gc.mmc_profile);
3546
3547		/* choose emulation */
3548		if (mmc_profile == 0x08) /* CD-ROM */
3549			return mmc_gettrackinfo_cdrom(periph, trackinfo);
3550		if (mmc_profile == 0x10) /* DVD-ROM */
3551			return mmc_gettrackinfo_dvdrom(periph, trackinfo);
3552		/* CD/DVD drive is violating specs */
3553		return EIO;
3554	}
3555
3556	/* (re)initialise structure */
3557	memset(trackinfo, 0, sizeof(struct mmc_trackinfo));
3558
3559	/* account for short returns screwing up track and session msb */
3560	if ((ti.data_len[1] | (ti.data_len[0] << 8)) <= 32) {
3561		ti.track_msb   = 0;
3562		ti.session_msb = 0;
3563	}
3564
3565	trackinfo->tracknr    = ti.track_lsb   | (ti.track_msb   << 8);
3566	trackinfo->sessionnr  = ti.session_lsb | (ti.session_msb << 8);
3567	trackinfo->track_mode = ti.track_info_1 & 0xf;
3568	trackinfo->data_mode  = ti.track_info_2 & 0xf;
3569
3570	flags = 0;
3571	if (ti.track_info_1 & 0x10)
3572		flags |= MMC_TRACKINFO_COPY;
3573	if (ti.track_info_1 & 0x20)
3574		flags |= MMC_TRACKINFO_DAMAGED;
3575	if (ti.track_info_2 & 0x10)
3576		flags |= MMC_TRACKINFO_FIXED_PACKET;
3577	if (ti.track_info_2 & 0x20)
3578		flags |= MMC_TRACKINFO_INCREMENTAL;
3579	if (ti.track_info_2 & 0x40)
3580		flags |= MMC_TRACKINFO_BLANK;
3581	if (ti.track_info_2 & 0x80)
3582		flags |= MMC_TRACKINFO_RESERVED;
3583	if (ti.data_valid   & 0x01)
3584		flags |= MMC_TRACKINFO_NWA_VALID;
3585	if (ti.data_valid   & 0x02)
3586		flags |= MMC_TRACKINFO_LRA_VALID;
3587	if ((trackinfo->track_mode & (3<<2)) == 4)		/* 01xxb */
3588		flags |= MMC_TRACKINFO_DATA;
3589	if ((trackinfo->track_mode & (1<<2)) == 0) {		/* x0xxb */
3590		flags |= MMC_TRACKINFO_AUDIO;
3591		if (trackinfo->track_mode & (1<<3))		/* 10xxb */
3592			flags |= MMC_TRACKINFO_AUDIO_4CHAN;
3593		if (trackinfo->track_mode & 1)			/* xxx1b */
3594			flags |= MMC_TRACKINFO_PRE_EMPH;
3595	}
3596
3597	trackinfo->flags = flags;
3598	trackinfo->track_start    = _4btol(ti.track_start);
3599	trackinfo->next_writable  = _4btol(ti.next_writable);
3600	trackinfo->free_blocks    = _4btol(ti.free_blocks);
3601	trackinfo->packet_size    = _4btol(ti.packet_size);
3602	trackinfo->track_size     = _4btol(ti.track_size);
3603	trackinfo->last_recorded  = _4btol(ti.last_recorded);
3604
3605	return 0;
3606}
3607
3608static int
3609mmc_doclose(struct scsipi_periph *periph, int param, int func) {
3610	struct scsipi_close_tracksession close_cmd;
3611	int error, flags;
3612
3613	/* set up SCSI call with track number */
3614	flags = XS_CTL_DATA_OUT;
3615	memset(&close_cmd, 0, sizeof(close_cmd));
3616	close_cmd.opcode    = CLOSE_TRACKSESSION;
3617	close_cmd.function  = func;
3618	_lto2b(param, close_cmd.tracksessionnr);
3619
3620	error = scsipi_command(periph,
3621		(void *) &close_cmd, sizeof(close_cmd),
3622		NULL, 0,
3623		CDRETRIES, 120000, NULL, flags);
3624
3625	return error;
3626}
3627
3628static int
3629mmc_do_closetrack(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3630{
3631	int mmc_profile = mmc_op->mmc_profile;
3632
3633	switch (mmc_profile) {
3634	case 0x12 : /* DVD-RAM */
3635	case 0x1a : /* DVD+RW  */
3636	case 0x2a : /* DVD+RW Dual layer */
3637	case 0x42 : /* BD-R Ramdom Recording (RRM) */
3638	case 0x43 : /* BD-RE */
3639	case 0x52 : /* HD DVD-RW ; DVD-RAM like */
3640		return EINVAL;
3641	}
3642
3643	return mmc_doclose(periph, mmc_op->tracknr, 1);
3644}
3645
3646static int
3647mmc_do_close_or_finalise(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3648{
3649	uint8_t blob[MS5LEN], *page5;
3650	int mmc_profile = mmc_op->mmc_profile;
3651	int func, close, flags;
3652	int error;
3653
3654	close = (mmc_op->operation == MMC_OP_CLOSESESSION);
3655
3656	switch (mmc_profile) {
3657	case 0x09 : /* CD-R       */
3658	case 0x0a : /* CD-RW      */
3659		/* Special case : need to update MS field in mode page 5 */
3660		memset(blob, 0, sizeof(blob));
3661		page5 = blob+8;
3662
3663		flags = XS_CTL_DATA_IN;
3664		error = scsipi_mode_sense_big(periph, SMS_PF, 5,
3665		    (void *)blob, sizeof(blob), flags, CDRETRIES, 20000);
3666		if (error)
3667			return error;
3668
3669		/* set multi session field when closing a session only */
3670		page5[3] &= 63;
3671		if (close)
3672			page5[3] |= 3 << 6;
3673
3674		flags = XS_CTL_DATA_OUT;
3675		error = scsipi_mode_select_big(periph, SMS_PF,
3676		    (void *)blob, sizeof(blob), flags, CDRETRIES, 20000);
3677		if (error)
3678			return error;
3679		/* and use funtion 2 */
3680		func = 2;
3681		break;
3682	case 0x11 : /* DVD-R (DL) */
3683	case 0x13 : /* DVD-RW restricted overwrite */
3684	case 0x14 : /* DVD-RW sequential */
3685		func = close ? 2 : 3;
3686		break;
3687	case 0x1b : /* DVD+R   */
3688	case 0x2b : /* DVD+R Dual layer */
3689	case 0x51 : /* HD DVD-R   */
3690	case 0x41 : /* BD-R Sequential recording (SRM) */
3691		func = close ? 2 : 6;
3692		break;
3693	case 0x12 : /* DVD-RAM */
3694	case 0x1a : /* DVD+RW  */
3695	case 0x2a : /* DVD+RW Dual layer */
3696	case 0x42 : /* BD-R Ramdom Recording (RRM) */
3697	case 0x43 : /* BD-RE */
3698	case 0x52 : /* HD DVD-RW; DVD-RAM like */
3699		return EINVAL;
3700	default:
3701		printf("MMC close/finalise passed wrong device type! (%d)\n",
3702		    mmc_profile);
3703		return EINVAL;
3704	}
3705
3706	return mmc_doclose(periph, mmc_op->sessionnr, func);
3707}
3708
3709static int
3710mmc_do_reserve_track(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3711{
3712	struct scsipi_reserve_track reserve_cmd;
3713	uint32_t extent;
3714	int error, flags;
3715
3716	/* TODO make mmc safeguards? */
3717	extent = mmc_op->extent;
3718	/* TODO min/max support? */
3719
3720	/* set up SCSI call with requested space */
3721	flags = XS_CTL_DATA_OUT;
3722	memset(&reserve_cmd, 0, sizeof(reserve_cmd));
3723	reserve_cmd.opcode = RESERVE_TRACK;
3724	_lto4b(extent, reserve_cmd.reservation_size);
3725
3726	error = scsipi_command(periph,
3727		(void *) &reserve_cmd, sizeof(reserve_cmd),
3728		NULL, 0,
3729		CDRETRIES, 30000, NULL, flags);
3730
3731	return error;
3732}
3733
3734static int
3735mmc_do_reserve_track_nwa(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3736{
3737	/* XXX assumes that NWA given is valid */
3738	switch (mmc_op->mmc_profile) {
3739	case 0x09 : /* CD-R       */
3740		/* XXX unknown boundary checks XXX */
3741		if (mmc_op->extent <= 152)
3742			return EINVAL;
3743		/* CD-R takes 152 sectors to close track */
3744		mmc_op->extent -= 152;
3745		return mmc_do_reserve_track(periph, mmc_op);
3746	case 0x11 : /* DVD-R (DL) */
3747	case 0x1b : /* DVD+R   */
3748	case 0x2b : /* DVD+R Dual layer */
3749		if (mmc_op->extent % 16)
3750			return EINVAL;
3751		/* upto one ECC block of 16 sectors lost */
3752		mmc_op->extent -= 16;
3753		return mmc_do_reserve_track(periph, mmc_op);
3754	case 0x41 : /* BD-R Sequential recording (SRM) */
3755	case 0x51 : /* HD DVD-R   */
3756		if (mmc_op->extent % 32)
3757			return EINVAL;
3758		/* one ECC block of 32 sectors lost (AFAIK) */
3759		mmc_op->extent -= 32;
3760		return mmc_do_reserve_track(periph, mmc_op);
3761	}
3762
3763	/* unknown behaviour or invalid disc type */
3764	return EINVAL;
3765}
3766
3767static int
3768mmc_do_repair_track(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3769{
3770	struct scsipi_repair_track repair_cmd;
3771	int error, flags;
3772
3773	/* TODO make mmc safeguards? */
3774
3775	/* set up SCSI call with track number */
3776	flags = XS_CTL_DATA_OUT;
3777	memset(&repair_cmd, 0, sizeof(repair_cmd));
3778	repair_cmd.opcode = REPAIR_TRACK;
3779	_lto2b(mmc_op->tracknr, repair_cmd.tracknr);
3780
3781	error = scsipi_command(periph,
3782		(void *) &repair_cmd, sizeof(repair_cmd),
3783		NULL, 0,
3784		CDRETRIES, 30000, NULL, flags);
3785
3786	return error;
3787}
3788
3789static int
3790mmc_do_op(struct scsipi_periph *periph, struct mmc_op *mmc_op)
3791{
3792	/* guard operation value */
3793	if (mmc_op->operation < 1 || mmc_op->operation > MMC_OP_MAX)
3794		return EINVAL;
3795
3796	/* synchronise cache is special since it doesn't rely on mmc_profile */
3797	if (mmc_op->operation == MMC_OP_SYNCHRONISECACHE)
3798		return cdcachesync(periph, 0);
3799
3800	/* zero mmc_profile means unknown disc so operations are not defined */
3801	if (mmc_op->mmc_profile == 0) {
3802#ifdef DEBUG
3803		printf("mmc_do_op called with mmc_profile = 0\n");
3804#endif
3805		return EINVAL;
3806	}
3807
3808	/* do the operations */
3809	switch (mmc_op->operation) {
3810	case MMC_OP_CLOSETRACK   :
3811		return mmc_do_closetrack(periph, mmc_op);
3812	case MMC_OP_CLOSESESSION :
3813	case MMC_OP_FINALISEDISC :
3814		return mmc_do_close_or_finalise(periph, mmc_op);
3815	case MMC_OP_RESERVETRACK :
3816		return mmc_do_reserve_track(periph, mmc_op);
3817	case MMC_OP_RESERVETRACK_NWA :
3818		return mmc_do_reserve_track_nwa(periph, mmc_op);
3819	case MMC_OP_REPAIRTRACK  :
3820		return mmc_do_repair_track(periph, mmc_op);
3821	case MMC_OP_UNCLOSELASTSESSION :
3822		/* TODO unclose last session support */
3823		return EINVAL;
3824	default :
3825		printf("mmc_do_op: unhandled operation %d\n", mmc_op->operation);
3826	}
3827
3828	return EINVAL;
3829}
3830
3831static int
3832mmc_setup_writeparams(struct scsipi_periph *periph,
3833		      struct mmc_writeparams *mmc_writeparams)
3834{
3835	struct mmc_trackinfo trackinfo;
3836	uint8_t blob[MS5LEN];
3837	uint8_t *page5;
3838	int flags, error;
3839	int track_mode, data_mode;
3840
3841	/* setup mode page 5 for CD only */
3842	if (mmc_writeparams->mmc_class != MMC_CLASS_CD)
3843		return 0;
3844
3845	memset(blob, 0, sizeof(blob));
3846	page5 = blob+8;
3847
3848	/* read mode page 5 (with header) */
3849	flags = XS_CTL_DATA_IN;
3850	error = scsipi_mode_sense_big(periph, SMS_PF, 5, (void *)blob,
3851	    sizeof(blob), flags, CDRETRIES, 20000);
3852	if (error)
3853		return error;
3854
3855	/* set page length for reasurance */
3856	page5[1] = P5LEN;	/* page length */
3857
3858	/* write type packet/incremental */
3859	page5[2] &= 0xf0;
3860
3861	/* set specified mode parameters */
3862	track_mode = mmc_writeparams->track_mode;
3863	data_mode  = mmc_writeparams->data_mode;
3864	if (track_mode <= 0 || track_mode > 15)
3865		return EINVAL;
3866	if (data_mode < 1 || data_mode > 2)
3867		return EINVAL;
3868
3869	/* if a tracknr is passed, setup according to the track */
3870	if (mmc_writeparams->tracknr > 0) {
3871		trackinfo.tracknr = mmc_writeparams->tracknr;
3872		error = mmc_gettrackinfo(periph, &trackinfo);
3873		if (error)
3874			return error;
3875		if ((trackinfo.flags & MMC_TRACKINFO_BLANK) == 0) {
3876			track_mode = trackinfo.track_mode;
3877			data_mode  = trackinfo.data_mode;
3878		}
3879		mmc_writeparams->blockingnr = trackinfo.packet_size;
3880	}
3881
3882	/* copy track mode and data mode from trackinfo */
3883	page5[3] &= 16;		/* keep only `Copy' bit */
3884	page5[3] |= (3 << 6) | track_mode;
3885	page5[4] &= 0xf0;	/* wipe data block type */
3886	if (data_mode == 1) {
3887		/* select ISO mode 1 (CD only) */
3888		page5[4] |= 8;
3889		/* select session format normal disc (CD only) */
3890		page5[8] = 0;
3891	} else {
3892		/* select ISO mode 2; XA form 1 (CD only) */
3893		page5[4] |= 10;
3894		/* select session format CD-ROM XA disc (CD only) */
3895		page5[8] = 0x20;
3896	}
3897	if (mmc_writeparams->mmc_cur & MMC_CAP_SEQUENTIAL) {
3898		if (mmc_writeparams->mmc_cur & MMC_CAP_ZEROLINKBLK) {
3899			/* set BUFE buffer underrun protection */
3900			page5[2] |= 1<<6;
3901		}
3902		/* allow for multi session */
3903		page5[3] |= 3 << 6;
3904	} else {
3905		/* select fixed packets */
3906		page5[3] |= 1<<5;
3907		_lto4b(mmc_writeparams->blockingnr, &(page5[10]));
3908	}
3909
3910	/* write out updated mode page 5 (with header) */
3911	flags = XS_CTL_DATA_OUT;
3912	error = scsipi_mode_select_big(periph, SMS_PF, (void *)blob,
3913	    sizeof(blob), flags, CDRETRIES, 20000);
3914	if (error)
3915		return error;
3916
3917	return 0;
3918}
3919
3920static void
3921cd_set_geometry(struct cd_softc *cd)
3922{
3923	struct disk_geom *dg = &cd->sc_dk.dk_geom;
3924
3925	memset(dg, 0, sizeof(*dg));
3926
3927	dg->dg_secperunit = cd->params.disksize;
3928	dg->dg_secsize = cd->params.blksize;
3929
3930	disk_set_info(cd->sc_dev, &cd->sc_dk, NULL);
3931}
3932