Home | History | Annotate | Line # | Download | only in scsipi
      1 /*	$NetBSD: cd.c,v 1.356 2024/12/01 20:23:45 andvar 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 (at) 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 (at) tfs.com) Sept 1992
     50  */
     51 
     52 #include <sys/cdefs.h>
     53 __KERNEL_RCSID(0, "$NetBSD: cd.c,v 1.356 2024/12/01 20:23:45 andvar 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 
    110 struct cd_formatted_toc {
    111 	struct ioc_toc_header header;
    112 	struct cd_toc_entry entries[MAXTRACK+1]; /* One extra for the */
    113 						 /* leadout */
    114 };
    115 
    116 struct cdbounce {
    117 	struct buf *obp;	/* original buf */
    118 	struct buf *lbp;	/* first buffer */
    119 	struct buf *rbp;	/* second buffer */
    120 	int lerr;		/* error returned for first buffer */
    121 	int rerr;		/* error returned for second buffer */
    122 	int head;		/* bytes skipped at the start */
    123 	int lcount;		/* bytes copied to first buffer */
    124 	int rcount;		/* bytes copied to second buffer */
    125 };
    126 
    127 static void	cdstart(struct scsipi_periph *);
    128 static void	cdrestart(void *);
    129 static void	cdminphys(struct buf *);
    130 static void	cddone(struct scsipi_xfer *, int);
    131 static int	cd_interpret_sense(struct scsipi_xfer *);
    132 static int	cd_diskstart(device_t, struct buf *);
    133 static void	cd_iosize(device_t, int *);
    134 static int	cd_lastclose(device_t);
    135 static int      cd_firstopen(device_t, dev_t, int, int);
    136 static void	cd_label(device_t, struct disklabel *);
    137 static u_long	cd_size(struct cd_softc *, int);
    138 static int	cd_play(struct cd_softc *, int, int);
    139 static int	cd_play_tracks(struct cd_softc *, struct cd_formatted_toc *,
    140 		    int, int, int, int);
    141 static int	cd_play_msf(struct cd_softc *, int, int, int, int, int, int);
    142 static int	cd_pause(struct cd_softc *, int);
    143 static int	cd_reset(struct cd_softc *);
    144 static int	cd_read_subchannel(struct cd_softc *, int, int, int,
    145 		    struct cd_sub_channel_info *, int, int);
    146 static int	cd_read_toc(struct cd_softc *, int, int, int,
    147 		    struct cd_formatted_toc *, int, int, int);
    148 static int	cd_get_parms(struct cd_softc *, int);
    149 static int	cd_load_toc(struct cd_softc *, int, struct cd_formatted_toc *, int);
    150 static int	cdreadmsaddr(struct cd_softc *, struct cd_formatted_toc *,int *);
    151 static int	cdcachesync(struct scsipi_periph *periph, int flags);
    152 
    153 static int	dvd_auth(struct cd_softc *, dvd_authinfo *);
    154 static int	dvd_read_physical(struct cd_softc *, dvd_struct *);
    155 static int	dvd_read_copyright(struct cd_softc *, dvd_struct *);
    156 static int	dvd_read_disckey(struct cd_softc *, dvd_struct *);
    157 static int	dvd_read_bca(struct cd_softc *, dvd_struct *);
    158 static int	dvd_read_manufact(struct cd_softc *, dvd_struct *);
    159 static int	dvd_read_struct(struct cd_softc *, dvd_struct *);
    160 
    161 static int	cd_mode_sense(struct cd_softc *, u_int8_t, void *, size_t, int,
    162 		    int, int *);
    163 static int	cd_mode_select(struct cd_softc *, u_int8_t, void *, size_t,
    164 		    int, int);
    165 static int	cd_setchan(struct cd_softc *, int, int, int, int, int);
    166 static int	cd_getvol(struct cd_softc *, struct ioc_vol *, int);
    167 static int	cd_setvol(struct cd_softc *, const struct ioc_vol *, int);
    168 static int	cd_set_pa_immed(struct cd_softc *, int);
    169 static int	cd_load_unload(struct cd_softc *, struct ioc_load_unload *);
    170 static int	cd_setblksize(struct cd_softc *);
    171 
    172 static int	cdmatch(device_t, cfdata_t, void *);
    173 static void	cdattach(device_t, device_t, void *);
    174 static int	cddetach(device_t, int);
    175 
    176 static int	mmc_getdiscinfo(struct scsipi_periph *, struct mmc_discinfo *);
    177 static int	mmc_gettrackinfo(struct scsipi_periph *, struct mmc_trackinfo *);
    178 static int	mmc_do_op(struct scsipi_periph *, struct mmc_op *);
    179 static int	mmc_setup_writeparams(struct scsipi_periph *, struct mmc_writeparams *);
    180 
    181 static void	cd_set_geometry(struct cd_softc *);
    182 
    183 CFATTACH_DECL3_NEW(cd, sizeof(struct cd_softc), cdmatch, cdattach, cddetach,
    184     NULL, NULL, NULL, DVF_DETACH_SHUTDOWN);
    185 
    186 extern struct cfdriver cd_cd;
    187 
    188 static const struct scsipi_inquiry_pattern cd_patterns[] = {
    189 	{T_CDROM, T_REMOV,
    190 	 "",         "",                 ""},
    191 	{T_WORM, T_REMOV,
    192 	 "",         "",                 ""},
    193 #if 0
    194 	{T_CDROM, T_REMOV, /* more luns */
    195 	 "PIONEER ", "CD-ROM DRM-600  ", ""},
    196 #endif
    197 	{T_DIRECT, T_REMOV,
    198 	 "NEC                 CD-ROM DRIVE:260", "", ""},
    199 };
    200 
    201 static dev_type_open(cdopen);
    202 static dev_type_close(cdclose);
    203 static dev_type_read(cdread);
    204 static dev_type_write(cdwrite);
    205 static dev_type_ioctl(cdioctl);
    206 static dev_type_strategy(cdstrategy);
    207 static dev_type_dump(cddump);
    208 static dev_type_size(cdsize);
    209 
    210 const struct bdevsw cd_bdevsw = {
    211 	.d_open = cdopen,
    212 	.d_close = cdclose,
    213 	.d_strategy = cdstrategy,
    214 	.d_ioctl = cdioctl,
    215 	.d_dump = cddump,
    216 	.d_psize = cdsize,
    217 	.d_discard = nodiscard,
    218 	.d_flag = D_DISK | D_MPSAFE
    219 };
    220 
    221 const struct cdevsw cd_cdevsw = {
    222 	.d_open = cdopen,
    223 	.d_close = cdclose,
    224 	.d_read = cdread,
    225 	.d_write = cdwrite,
    226 	.d_ioctl = cdioctl,
    227 	.d_stop = nostop,
    228 	.d_tty = notty,
    229 	.d_poll = nopoll,
    230 	.d_mmap = nommap,
    231 	.d_kqfilter = nokqfilter,
    232 	.d_discard = nodiscard,
    233 	.d_flag = D_DISK | D_MPSAFE
    234 };
    235 
    236 static const struct dkdriver cddkdriver = {
    237 	.d_open = cdopen,
    238 	.d_close = cdclose,
    239 	.d_strategy = cdstrategy,
    240 	.d_minphys = cdminphys,
    241 	.d_diskstart = cd_diskstart,
    242 	.d_firstopen = cd_firstopen,
    243 	.d_lastclose = cd_lastclose,
    244 	.d_label = cd_label,
    245 };
    246 
    247 static const struct scsipi_periphsw cd_switch = {
    248 	cd_interpret_sense,	/* use our error handler first */
    249 	cdstart,		/* we have a queue, which is started by this */
    250 	NULL,			/* we do not have an async handler */
    251 	cddone,			/* deal with stats at interrupt time */
    252 };
    253 
    254 /*
    255  * The routine called by the low level scsi routine when it discovers
    256  * A device suitable for this driver
    257  */
    258 static int
    259 cdmatch(device_t parent, cfdata_t match, void *aux)
    260 {
    261 	struct scsipibus_attach_args *sa = aux;
    262 	int priority;
    263 
    264 	(void)scsipi_inqmatch(&sa->sa_inqbuf,
    265 	    cd_patterns, sizeof(cd_patterns) / sizeof(cd_patterns[0]),
    266 	    sizeof(cd_patterns[0]), &priority);
    267 
    268 	return (priority);
    269 }
    270 
    271 static void
    272 cdattach(device_t parent, device_t self, void *aux)
    273 {
    274 	struct cd_softc *cd = device_private(self);
    275 	struct dk_softc *dksc = &cd->sc_dksc;
    276 	struct scsipibus_attach_args *sa = aux;
    277 	struct scsipi_periph *periph = sa->sa_periph;
    278 	int dtype;
    279 
    280 	SC_DEBUG(periph, SCSIPI_DB2, ("cdattach: "));
    281 
    282 	switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph))) {
    283 	case SCSIPI_BUSTYPE_SCSI:
    284 		dtype = DKTYPE_SCSI;
    285 		if (periph->periph_version == 0)
    286 			cd->flags |= CDF_ANCIENT;
    287 		break;
    288 	case SCSIPI_BUSTYPE_ATAPI:
    289 		dtype = DKTYPE_ATAPI;
    290 		break;
    291 	default:
    292 		dtype = DKTYPE_UNKNOWN;
    293 		break;
    294 	}
    295 
    296 	/*
    297 	 * Initialize and attach the disk structure.
    298 	 */
    299 	dk_init(dksc, self, dtype);
    300 	disk_init(&dksc->sc_dkdev, dksc->sc_xname, &cddkdriver);
    301 
    302 	dk_attach(dksc);
    303 	disk_attach(&dksc->sc_dkdev);
    304 
    305 	bufq_alloc(&dksc->sc_bufq, "disksort", BUFQ_SORT_RAWBLOCK);
    306 
    307 	callout_init(&cd->sc_callout, 0);
    308 
    309 	/*
    310 	 * Store information needed to contact our base driver
    311 	 */
    312 	cd->sc_periph = periph;
    313 
    314 	periph->periph_dev = dksc->sc_dev;
    315 	periph->periph_switch = &cd_switch;
    316 
    317 	/*
    318 	 * Increase our openings to the maximum-per-periph
    319 	 * supported by the adapter.  This will either be
    320 	 * clamped down or grown by the adapter if necessary.
    321 	 */
    322 	periph->periph_openings =
    323 	    SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel);
    324 	periph->periph_flags |= PERIPH_GROW_OPENINGS;
    325 
    326 	aprint_naive("\n");
    327 	aprint_normal("\n");
    328 
    329 	if (!pmf_device_register(self, NULL, NULL))
    330 		aprint_error_dev(self, "couldn't establish power handler\n");
    331 }
    332 
    333 static int
    334 cddetach(device_t self, int flags)
    335 {
    336 	struct cd_softc *cd = device_private(self);
    337 	struct dk_softc *dksc = &cd->sc_dksc;
    338 	struct scsipi_periph *periph = cd->sc_periph;
    339 	struct scsipi_channel *chan = periph->periph_channel;
    340 	int bmaj, cmaj, i, mn, rc;
    341 
    342 	if ((rc = disk_begindetach(&dksc->sc_dkdev, cd_lastclose, self, flags)) != 0)
    343 		return rc;
    344 
    345 	/* locate the major number */
    346 	bmaj = bdevsw_lookup_major(&cd_bdevsw);
    347 	cmaj = cdevsw_lookup_major(&cd_cdevsw);
    348 
    349 	/* Nuke the vnodes for any open instances */
    350 	for (i = 0; i < MAXPARTITIONS; i++) {
    351 		mn = CDMINOR(device_unit(self), i);
    352 		vdevgone(bmaj, mn, mn, VBLK);
    353 		vdevgone(cmaj, mn, mn, VCHR);
    354 	}
    355 
    356 	/* kill any pending restart */
    357 	callout_halt(&cd->sc_callout, NULL);
    358 
    359 	dk_drain(dksc);
    360 
    361 	/* Kill off any pending commands. */
    362 	mutex_enter(chan_mtx(chan));
    363 	scsipi_kill_pending(cd->sc_periph);
    364 	mutex_exit(chan_mtx(chan));
    365 
    366 	bufq_free(dksc->sc_bufq);
    367 
    368 	/* Detach from the disk list. */
    369 	disk_detach(&dksc->sc_dkdev);
    370 	disk_destroy(&dksc->sc_dkdev);
    371 
    372 	dk_detach(dksc);
    373 
    374 	callout_destroy(&cd->sc_callout);
    375 
    376 	pmf_device_deregister(self);
    377 
    378 	return (0);
    379 }
    380 
    381 /*
    382  * Serialized by caller
    383  */
    384 static int
    385 cd_firstopen(device_t self, dev_t dev, int flag, int fmt)
    386 {
    387         struct cd_softc *cd = device_private(self);
    388         struct scsipi_periph *periph = cd->sc_periph;
    389         struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter;
    390         int error, silent;
    391         int part;
    392 
    393 	part = CDPART(dev);
    394 
    395         error = scsipi_adapter_addref(adapt);
    396         if (error)
    397                 return error;
    398 
    399         if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT))
    400                 silent = XS_CTL_SILENT;
    401         else
    402                 silent = 0;
    403 
    404 	/* make cdclose() silent */
    405 	cd->flags |= CDF_EJECTED;
    406 
    407 	/* Check that it is still responding and ok. */
    408 	error = scsipi_test_unit_ready(periph,
    409 	    XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE |
    410 	    XS_CTL_SILENT);
    411 
    412 	/*
    413 	 * Start the pack spinning if necessary. Always allow the
    414 	 * raw partition to be opened, for raw IOCTLs. Data transfers
    415 	 * will check for SDEV_MEDIA_LOADED.
    416 	 */
    417 	if (error == EIO) {
    418 		error = scsipi_start(periph, SSS_START, silent);
    419 		if (error == EINVAL)
    420 			error = EIO;
    421 	}
    422 	if (error) {
    423 		if (part == RAW_PART)
    424 			goto out;
    425 		goto bad;
    426 	}
    427 
    428 	/* Lock the pack in. */
    429 	error = scsipi_prevent(periph, SPAMR_PREVENT_DT,
    430 	    XS_CTL_IGNORE_ILLEGAL_REQUEST |
    431 	    XS_CTL_IGNORE_MEDIA_CHANGE);
    432 	SC_DEBUG(periph, SCSIPI_DB1,
    433 	    ("cdopen: scsipi_prevent, error=%d\n", error));
    434 	if (error) {
    435 		if (part == RAW_PART)
    436 			goto out;
    437 		goto bad;
    438 	}
    439 
    440 	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
    441 		int param_error;
    442 
    443 		/* Load the physical device parameters. */
    444 		param_error = cd_get_parms(cd, 0);
    445 		if (param_error == CDGP_RESULT_OFFLINE) {
    446 			error = ENXIO;
    447 			goto bad2;
    448 		}
    449 		periph->periph_flags |= PERIPH_MEDIA_LOADED;
    450 
    451 		SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded "));
    452 
    453 		cd_set_geometry(cd);
    454 
    455 		/* make cdclose() loud again */
    456 		cd->flags &= ~CDF_EJECTED;
    457 	}
    458 
    459 	periph->periph_flags |= PERIPH_OPEN;
    460 
    461 out:
    462 	return 0;
    463 
    464 bad2:
    465 	scsipi_prevent(periph, SPAMR_ALLOW,
    466 	    XS_CTL_IGNORE_ILLEGAL_REQUEST |
    467 	    XS_CTL_IGNORE_MEDIA_CHANGE |
    468 	    XS_CTL_SILENT);
    469 
    470 bad:
    471 	scsipi_adapter_delref(adapt);
    472 	return error;
    473 }
    474 
    475 /*
    476  * open the device. Make sure the partition info is a up-to-date as can be.
    477  */
    478 static int
    479 cdopen(dev_t dev, int flag, int fmt, struct lwp *l)
    480 {
    481 	struct cd_softc *cd;
    482 	struct dk_softc *dksc;
    483 	struct scsipi_periph *periph;
    484 	int unit, part;
    485 	int error;
    486 
    487 	unit = CDUNIT(dev);
    488 	cd = device_lookup_private(&cd_cd, unit);
    489 	if (cd == NULL)
    490 		return (ENXIO);
    491 	dksc = &cd->sc_dksc;
    492 
    493 	periph = cd->sc_periph;
    494 	part = CDPART(dev);
    495 
    496 	SC_DEBUG(periph, SCSIPI_DB1,
    497 	    ("cdopen: dev=0x%"PRIu64" (unit %"PRIu32" (of %d), partition %d)\n",
    498 	    dev, unit, cd_cd.cd_ndevs, CDPART(dev)));
    499 
    500 	/*
    501 	 * If any partition is open, but the disk has been invalidated,
    502 	 * disallow further opens of non-raw partition
    503 	 */
    504 	if ((periph->periph_flags & (PERIPH_OPEN | PERIPH_MEDIA_LOADED)) ==
    505 	    PERIPH_OPEN) {
    506 		if (part != RAW_PART || fmt != S_IFCHR)
    507 			return EIO;
    508 	}
    509 
    510 	error = dk_open(dksc, dev, flag, fmt, l);
    511 
    512 	SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n"));
    513 
    514 	return error;
    515 }
    516 
    517 /*
    518  * Serialized by caller
    519  */
    520 static int
    521 cd_lastclose(device_t self)
    522 {
    523 	struct cd_softc *cd = device_private(self);
    524 	struct scsipi_periph *periph = cd->sc_periph;
    525 	struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter;
    526 	int silent;
    527 
    528 	if ((cd->flags & CDF_EJECTED) != 0 ||
    529 	    (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)
    530 		silent = XS_CTL_SILENT;
    531 	else
    532 		silent = 0;
    533 
    534 	cdcachesync(periph, silent);
    535 
    536 	scsipi_wait_drain(periph);
    537 
    538 	scsipi_prevent(periph, SPAMR_ALLOW,
    539 	    XS_CTL_IGNORE_ILLEGAL_REQUEST |
    540 	    XS_CTL_IGNORE_NOT_READY |
    541 	    XS_CTL_SILENT);
    542 	periph->periph_flags &= ~PERIPH_OPEN;
    543 
    544 	scsipi_wait_drain(periph);
    545 
    546 	scsipi_adapter_delref(adapt);
    547 
    548 	return 0;
    549 }
    550 
    551 /*
    552  * close the device.. only called if we are the LAST
    553  * occurrence of an open device
    554  */
    555 static int
    556 cdclose(dev_t dev, int flag, int fmt, struct lwp *l)
    557 {
    558 	struct cd_softc *cd;
    559 	struct dk_softc *dksc;
    560 	int unit;
    561 
    562 	unit = CDUNIT(dev);
    563 	cd = device_lookup_private(&cd_cd, unit);
    564 	dksc = &cd->sc_dksc;
    565 
    566 	return dk_close(dksc, dev, flag, fmt, l);
    567 }
    568 
    569 static void
    570 cd_bounce_buffer_done(struct buf *bp)
    571 {
    572 	struct cdbounce *bounce = bp->b_private;
    573 	struct buf *obp = bounce->obp;
    574 
    575 	if (bp == bounce->lbp) {
    576 		if ((bounce->lerr = bp->b_error) == 0)
    577 			memcpy(obp->b_data, (char *)bp->b_data + bounce->head, bounce->lcount);
    578 		bounce->lbp = NULL;
    579 	}
    580 
    581 	if (bp == bounce->rbp) {
    582 		if ((bounce->rerr = bp->b_error) == 0)
    583 			memcpy((char *)obp->b_data + bounce->lcount, bp->b_data, bounce->rcount);
    584 		bounce->rbp = NULL;
    585 	}
    586 
    587 	free(bp->b_data, M_DEVBUF);
    588 	putiobuf(bp);
    589 
    590 	if (bounce->lbp != NULL || bounce->rbp != NULL)
    591 		return;
    592 
    593 	obp->b_error = bounce->rerr;
    594 	if (bounce->lerr)
    595 		obp->b_error = bounce->lerr;
    596 
    597 	obp->b_resid = 0;
    598 	if (obp->b_error)
    599 		obp->b_resid = obp->b_bcount;
    600 
    601 	free(bounce, M_DEVBUF);
    602 	biodone(obp);
    603 }
    604 
    605 static int
    606 cd_make_bounce_buffer(struct cd_softc *cd, struct buf *bp, daddr_t blkno, int count, struct buf **nbpp, void *priv)
    607 {
    608 	struct buf *nbp;
    609 
    610 	/* We don't support bouncing writes */
    611 	if ((bp->b_flags & B_READ) == 0)
    612 		return EACCES; /* XXX */
    613 
    614 	nbp = getiobuf(NULL, false);
    615 	if (nbp == NULL)
    616 		return ENOMEM;
    617 
    618 	nbp->b_data = malloc(count, M_DEVBUF, M_NOWAIT);
    619 	if (nbp->b_data == NULL) {
    620 		putiobuf(nbp);
    621 		return ENOMEM;
    622 	}
    623 
    624 	/* Set up the IOP to the bounce buffer */
    625 	nbp->b_error = 0;
    626 	nbp->b_dev = bp->b_dev;
    627 	nbp->b_proc = bp->b_proc;
    628 	nbp->b_bcount = count;
    629 	nbp->b_bufsize = count;
    630 	nbp->b_blkno = blkno;
    631 	nbp->b_flags = bp->b_flags | B_READ;
    632 	nbp->b_oflags = bp->b_oflags;
    633 	nbp->b_cflags = bp->b_cflags;
    634 	nbp->b_iodone = cd_bounce_buffer_done;
    635 	nbp->b_private = priv;
    636 
    637 	BIO_COPYPRIO(nbp, bp);
    638 
    639 	*nbpp = nbp;
    640 	return 0;
    641 }
    642 
    643 static int
    644 cd_make_bounce(struct cd_softc *cd, struct buf *bp, struct cdbounce **bouncep)
    645 {
    646 	struct dk_softc *dksc = &cd->sc_dksc;
    647 	unsigned secsize = dksc->sc_dkdev.dk_geom.dg_secsize;
    648 	struct cdbounce *bounce;
    649 	int bps, nblks, skip, total, count;
    650 	daddr_t blkno;
    651 	struct buf *lbp, *rbp;
    652 	int error;
    653 
    654 	bounce = malloc(sizeof(struct cdbounce), M_DEVBUF, M_NOWAIT|M_ZERO);
    655 	if (bounce == NULL)
    656 		return ENOMEM;
    657 
    658 	bps = howmany(secsize, DEV_BSIZE);
    659 	nblks = howmany(bp->b_bcount, DEV_BSIZE);
    660 
    661 	skip = bp->b_blkno % bps;
    662 
    663 	blkno = bp->b_blkno - skip;
    664 	total = roundup(nblks + skip, bps) * DEV_BSIZE;
    665 
    666 	count = total;
    667 	cd_iosize(dksc->sc_dev, &count);
    668 
    669 	bounce->head = skip * DEV_BSIZE;
    670 	bounce->lcount = imin(count - bounce->head, bp->b_bcount);
    671 	bounce->rcount = bp->b_bcount - bounce->lcount;
    672 
    673 	error = cd_make_bounce_buffer(cd, bp, blkno, count, &lbp, bounce);
    674 	if (error)
    675 		goto bad;
    676 
    677 	blkno += howmany(count, DEV_BSIZE);
    678 	count = total - count;
    679 
    680 	if (count > 0) {
    681 		error = cd_make_bounce_buffer(cd, bp, blkno, count, &rbp, bounce);
    682 		if (error) {
    683 			free(lbp->b_data, M_DEVBUF);
    684 			putiobuf(lbp);
    685 			goto bad;
    686 		}
    687 	} else
    688 		rbp = NULL;
    689 
    690 	bounce->obp = bp;
    691 	bounce->lbp = lbp;
    692 	bounce->rbp = rbp;
    693 
    694 	*bouncep = bounce;
    695 
    696 	return 0;
    697 
    698 bad:
    699 	free(bounce, M_DEVBUF);
    700 	return error;
    701 }
    702 
    703 /*
    704  * Actually translate the requested transfer into one the physical driver can
    705  * understand.  The transfer is described by a buf and will include only one
    706  * physical transfer.
    707  */
    708 static void
    709 cdstrategy(struct buf *bp)
    710 {
    711 	struct cd_softc *cd = device_lookup_private(&cd_cd,CDUNIT(bp->b_dev));
    712 	struct dk_softc *dksc = &cd->sc_dksc;
    713 	struct scsipi_periph *periph = cd->sc_periph;
    714 	int error;
    715 
    716 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cdstrategy "));
    717 	SC_DEBUG(cd->sc_periph, SCSIPI_DB1,
    718 	    ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno));
    719 
    720 	/*
    721 	 * If the device has been made invalid, error out
    722 	 * maybe the media changed
    723 	 */
    724 	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
    725 		if (periph->periph_flags & PERIPH_OPEN)
    726 			error = EIO;
    727 		else
    728 			error = ENODEV;
    729 		goto bad;
    730 	}
    731 
    732 	/*
    733 	 * If label and device don't agree in sector size use a bounce buffer
    734 	 */
    735 	if (dksc->sc_dkdev.dk_label->d_secsize != dksc->sc_dkdev.dk_geom.dg_secsize) {
    736 		struct cdbounce *bounce = NULL;
    737 
    738 		error = cd_make_bounce(cd, bp, &bounce);
    739 		if (error)
    740 			goto bad;
    741 
    742 		dk_strategy(dksc, bounce->lbp);
    743 		if (bounce->rbp != NULL)
    744 			dk_strategy(dksc, bounce->rbp);
    745 
    746 		return;
    747 	}
    748 
    749 	dk_strategy(dksc, bp);
    750 	return;
    751 
    752 bad:
    753 	bp->b_error = error;
    754 	bp->b_resid = bp->b_bcount;
    755 	biodone(bp);
    756 }
    757 
    758 /*
    759  * Issue single I/O command
    760  *
    761  * Called from dk_start and implicitly from dk_strategy
    762  */
    763 static int
    764 cd_diskstart(device_t dev, struct buf *bp)
    765 {
    766 	struct cd_softc *cd = device_private(dev);
    767         struct scsipi_periph *periph = cd->sc_periph;
    768         struct scsipi_channel *chan = periph->periph_channel;
    769 	struct scsipi_rw_10 cmd_big;
    770 	struct scsi_rw_6 cmd_small;
    771 	struct scsipi_generic *cmdp;
    772 	struct scsipi_xfer *xs;
    773 	int error, flags, nblks, cmdlen;
    774 
    775 	SC_DEBUG(periph, SCSIPI_DB2, ("cdstart "));
    776 
    777 	mutex_enter(chan_mtx(chan));
    778 
    779 	if (periph->periph_active >= periph->periph_openings) {
    780 		error = EAGAIN;
    781 		goto out;
    782 	}
    783 
    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 		error = EAGAIN;
    793 		goto out;
    794 	}
    795 
    796 	/*
    797 	 * If the device has become invalid, abort all the
    798 	 * reads and writes until all files have been closed and
    799 	 * re-opened
    800 	 */
    801 	if (__predict_false(
    802 	    (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) {
    803 		error = EIO;
    804 		goto out;
    805 	}
    806 
    807 	nblks = howmany(bp->b_bcount, cd->params.blksize);
    808 
    809 	/*
    810 	 *  Fill out the scsi command.  If the transfer will
    811 	 *  fit in a "small" cdb, use it.
    812 	 */
    813 	if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) &&
    814 	    ((nblks & 0xff) == nblks) &&
    815 	    !(periph->periph_quirks & PQUIRK_ONLYBIG)) {
    816 		/*
    817 		 * We can fit in a small cdb.
    818 		 */
    819 		memset(&cmd_small, 0, sizeof(cmd_small));
    820 		cmd_small.opcode = (bp->b_flags & B_READ) ?
    821 		    SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND;
    822 		_lto3b(bp->b_rawblkno, cmd_small.addr);
    823 		cmd_small.length = nblks & 0xff;
    824 		cmdlen = sizeof(cmd_small);
    825 		cmdp = (struct scsipi_generic *)&cmd_small;
    826 	} else {
    827 		/*
    828 		 * Need a large cdb.
    829 		 */
    830 		memset(&cmd_big, 0, sizeof(cmd_big));
    831 		cmd_big.opcode = (bp->b_flags & B_READ) ?
    832 		    READ_10 : WRITE_10;
    833 		_lto4b(bp->b_rawblkno, cmd_big.addr);
    834 		_lto2b(nblks, cmd_big.length);
    835 		cmdlen = sizeof(cmd_big);
    836 		cmdp = (struct scsipi_generic *)&cmd_big;
    837 	}
    838 
    839 	/*
    840 	 * Figure out what flags to use.
    841 	 */
    842 	flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG;
    843 	if (bp->b_flags & B_READ)
    844 		flags |= XS_CTL_DATA_IN;
    845 	else
    846 		flags |= XS_CTL_DATA_OUT;
    847 
    848 	/*
    849 	 * Call the routine that chats with the adapter.
    850 	 * Note: we cannot sleep as we may be an interrupt
    851 	 */
    852 	xs = scsipi_make_xs_locked(periph, cmdp, cmdlen,
    853 	    (u_char *)bp->b_data, bp->b_bcount,
    854 	    CDRETRIES, 30000, bp, flags);
    855 	if (__predict_false(xs == NULL)) {
    856 		/*
    857 		 * out of memory. Keep this buffer in the queue, and
    858 		 * retry later.
    859 		 */
    860 		callout_reset(&cd->sc_callout, hz / 2, cdrestart, cd);
    861 		error = EAGAIN;
    862 		goto out;
    863 	}
    864 
    865 	error = scsipi_execute_xs(xs);
    866 	/* with a scsipi_xfer preallocated, scsipi_command can't fail */
    867 	KASSERT(error == 0);
    868 
    869 out:
    870 	mutex_exit(chan_mtx(chan));
    871 
    872 	return error;
    873 }
    874 
    875 /*
    876  * Recover I/O request after memory shortage
    877  *
    878  * Called from callout
    879  */
    880 static void
    881 cdrestart(void *v)
    882 {
    883 	struct cd_softc *cd = v;
    884 	struct dk_softc *dksc = &cd->sc_dksc;
    885 
    886 	dk_start(dksc, NULL);
    887 }
    888 
    889 /*
    890  * Recover I/O request after memory shortage
    891  *
    892  * Called from scsipi midlayer when resources have been freed
    893  * with channel lock held
    894  */
    895 static void
    896 cdstart(struct scsipi_periph *periph)
    897 {
    898 	struct cd_softc *cd = device_private(periph->periph_dev);
    899 	struct dk_softc *dksc = &cd->sc_dksc;
    900 	struct scsipi_channel *chan = periph->periph_channel;
    901 
    902 	/*
    903 	 * release channel lock as dk_start may need to acquire
    904 	 * other locks
    905 	 *
    906 	 * cdstart is called from scsipi_put_xs and all its callers
    907 	 * release the lock afterwards. So releasing it here
    908 	 * doesn't matter.
    909 	 */
    910 	mutex_exit(chan_mtx(chan));
    911 
    912 	dk_start(dksc, NULL);
    913 
    914 	mutex_enter(chan_mtx(chan));
    915 }
    916 
    917 static void
    918 cddone(struct scsipi_xfer *xs, int error)
    919 {
    920 	struct cd_softc *cd = device_private(xs->xs_periph->periph_dev);
    921 	struct dk_softc *dksc = &cd->sc_dksc;
    922 	struct buf *bp = xs->bp;
    923 
    924 	if (bp) {
    925 		bp->b_error = error;
    926 		bp->b_resid = xs->resid;
    927 		if (error) {
    928 			/* on a read/write error bp->b_resid is zero, so fix */
    929 			bp->b_resid = bp->b_bcount;
    930 		}
    931 
    932 		dk_done(dksc, bp);
    933 		/* dk_start is called from scsipi_complete */
    934 	}
    935 }
    936 
    937 static int
    938 cd_interpret_sense(struct scsipi_xfer *xs)
    939 {
    940 	struct scsipi_periph *periph = xs->xs_periph;
    941 	struct scsi_sense_data *sense = &xs->sense.scsi_sense;
    942 	int retval = EJUSTRETURN;
    943 
    944 	/*
    945 	 * If it isn't an extended or extended/deferred error, let
    946 	 * the generic code handle it.
    947 	 */
    948 	if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT &&
    949 	    SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED)
    950 		return (retval);
    951 
    952 	/*
    953 	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Logical Unit
    954 	 * Is In The Process of Becoming Ready" (Sense code 0x04,0x01), then
    955 	 * wait a bit for the drive to spin up
    956 	 */
    957 
    958 	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
    959 	    (sense->asc == 0x04) && (sense->ascq == 0x01)) {
    960 		/*
    961 		 * Sleep for 5 seconds to wait for the drive to spin up
    962 		 */
    963 
    964 		SC_DEBUG(periph, SCSIPI_DB1, ("Waiting 5 sec for CD "
    965 						"spinup\n"));
    966 		if (!callout_pending(&periph->periph_callout))
    967 			scsipi_periph_freeze(periph, 1);
    968 		callout_reset(&periph->periph_callout,
    969 		    5 * hz, scsipi_periph_timed_thaw, periph);
    970 		retval = ERESTART;
    971 	}
    972 
    973 	/*
    974 	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Logical Unit Not
    975 	 * Ready, Operation In Progress" (Sense code 0x04, 0x07),
    976 	 * then wait for the specified time
    977 	 */
    978 
    979 	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
    980 	    (sense->asc == 0x04) && (sense->ascq == 0x07)) {
    981 		/*
    982 		 * we could listen to the delay; but it looks like the skey
    983 		 * data is not always returned.
    984 		 */
    985 		/* cd_delay = _2btol(sense->sks.sks_bytes); */
    986 
    987 		/* wait for a half second and get going again */
    988 		if (!callout_pending(&periph->periph_callout))
    989 			scsipi_periph_freeze(periph, 1);
    990 		callout_reset(&periph->periph_callout,
    991 		    hz/2, scsipi_periph_timed_thaw, periph);
    992 		retval = ERESTART;
    993 	}
    994 
    995 	/*
    996 	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Long write in
    997 	 * progress" (Sense code 0x04, 0x08), then wait for the specified
    998 	 * time
    999 	 */
   1000 
   1001 	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
   1002 	    (sense->asc == 0x04) && (sense->ascq == 0x08)) {
   1003 		/*
   1004 		 * long write in process; we could listen to the delay; but it
   1005 		 * looks like the skey data is not always returned.
   1006 		 */
   1007 		/* cd_delay = _2btol(sense->sks.sks_bytes); */
   1008 
   1009 		/* wait for a half second and get going again */
   1010 		if (!callout_pending(&periph->periph_callout))
   1011 			scsipi_periph_freeze(periph, 1);
   1012 		callout_reset(&periph->periph_callout,
   1013 		    hz/2, scsipi_periph_timed_thaw, periph);
   1014 		retval = ERESTART;
   1015 	}
   1016 
   1017 	return (retval);
   1018 }
   1019 
   1020 static void
   1021 cdminphys(struct buf *bp)
   1022 {
   1023 	struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(bp->b_dev));
   1024 	struct dk_softc *dksc = &cd->sc_dksc;
   1025 	long xmax;
   1026 
   1027 	/*
   1028 	 * If the device is ancient, we want to make sure that
   1029 	 * the transfer fits into a 6-byte cdb.
   1030 	 *
   1031 	 * XXX Note that the SCSI-I spec says that 256-block transfers
   1032 	 * are allowed in a 6-byte read/write, and are specified
   1033 	 * by setting the "length" to 0.  However, we're conservative
   1034 	 * here, allowing only 255-block transfers in case an
   1035 	 * ancient device gets confused by length == 0.  A length of 0
   1036 	 * in a 10-byte read/write actually means 0 blocks.
   1037 	 */
   1038 	if (cd->flags & CDF_ANCIENT) {
   1039 		xmax = dksc->sc_dkdev.dk_geom.dg_secsize * 0xff;
   1040 
   1041 		if (bp->b_bcount > xmax)
   1042 			bp->b_bcount = xmax;
   1043 	}
   1044 
   1045 	scsipi_adapter_minphys(cd->sc_periph->periph_channel, bp);
   1046 }
   1047 
   1048 static void
   1049 cd_iosize(device_t dev, int *count)
   1050 {
   1051 	struct buf B;
   1052 	int bmaj;
   1053 
   1054 	bmaj       = bdevsw_lookup_major(&cd_bdevsw);
   1055 	B.b_dev    = MAKECDDEV(bmaj,device_unit(dev),RAW_PART);
   1056 	B.b_bcount = *count;
   1057 
   1058 	cdminphys(&B);
   1059 
   1060 	*count = B.b_bcount;
   1061 }
   1062 
   1063 static int
   1064 cdread(dev_t dev, struct uio *uio, int ioflag)
   1065 {
   1066 	return (physio(cdstrategy, NULL, dev, B_READ, cdminphys, uio));
   1067 }
   1068 
   1069 static int
   1070 cdwrite(dev_t dev, struct uio *uio, int ioflag)
   1071 {
   1072 	return (physio(cdstrategy, NULL, dev, B_WRITE, cdminphys, uio));
   1073 }
   1074 
   1075 #if 0	/* XXX Not used */
   1076 /*
   1077  * conversion between minute-seconde-frame and logical block address
   1078  * addresses format
   1079  */
   1080 static void
   1081 lba2msf(u_long lba, u_char *m, u_char *s, u_char *f)
   1082 {
   1083 	u_long tmp;
   1084 
   1085 	tmp = lba + CD_BLOCK_OFFSET;	/* offset of first logical frame */
   1086 	tmp &= 0xffffff;		/* negative lbas use only 24 bits */
   1087 	*m = tmp / (CD_SECS * CD_FRAMES);
   1088 	tmp %= (CD_SECS * CD_FRAMES);
   1089 	*s = tmp / CD_FRAMES;
   1090 	*f = tmp % CD_FRAMES;
   1091 }
   1092 #endif /* XXX Not used */
   1093 
   1094 /*
   1095  * Convert an hour:minute:second:frame address to a logical block address. In
   1096  * theory the number of secs/minute and number of frames/second could be
   1097  * configured differently in the device  as could the block offset but in
   1098  * practice these values are rock solid and most drives don't even allow
   1099  * theses values to be changed.
   1100  */
   1101 static uint32_t
   1102 hmsf2lba(uint8_t h, uint8_t m, uint8_t s, uint8_t f)
   1103 {
   1104 	return (((((uint32_t) h * 60 + m) * CD_SECS) + s) * CD_FRAMES + f)
   1105 		- CD_BLOCK_OFFSET;
   1106 }
   1107 
   1108 static int
   1109 cdreadmsaddr(struct cd_softc *cd, struct cd_formatted_toc *toc, int *addr)
   1110 {
   1111 	struct scsipi_periph *periph = cd->sc_periph;
   1112 	int error;
   1113 	struct cd_toc_entry *cte;
   1114 
   1115 	error = cd_read_toc(cd, CD_TOC_FORM, 0, 0, toc,
   1116 	    sizeof(struct ioc_toc_header) + sizeof(struct cd_toc_entry),
   1117 	    0, 0x40 /* control word for "get MS info" */);
   1118 
   1119 	if (error)
   1120 		return (error);
   1121 
   1122 	cte = &toc->entries[0];
   1123 	if (periph->periph_quirks & PQUIRK_LITTLETOC) {
   1124 		cte->addr.lba = le32toh(cte->addr.lba);
   1125 		toc->header.len = le16toh(toc->header.len);
   1126 	} else {
   1127 		cte->addr.lba = be32toh(cte->addr.lba);
   1128 		toc->header.len = be16toh(toc->header.len);
   1129 	}
   1130 
   1131 	*addr = (toc->header.len >= 10 && cte->track > 1) ?
   1132 		cte->addr.lba : 0;
   1133 	return 0;
   1134 }
   1135 
   1136 /* synchronise caches code from cd.c, move to scsipi_ioctl.c ? */
   1137 static int
   1138 cdcachesync(struct scsipi_periph *periph, int flags) {
   1139 	struct scsi_synchronize_cache_10 cmd;
   1140 
   1141 	/*
   1142 	 * Issue a SYNCHRONIZE CACHE. MMC devices have to issue with address 0
   1143 	 * and length 0 as it can't synchronise parts of the disc per spec.
   1144 	 * We ignore ILLEGAL REQUEST in the event that the command is not
   1145 	 * supported by the device, and poll for completion so that we know
   1146 	 * that the cache has actually been flushed.
   1147 	 *
   1148 	 * XXX should we handle the PQUIRK_NOSYNCCACHE ?
   1149 	 */
   1150 
   1151 	memset(&cmd, 0, sizeof(cmd));
   1152 	cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10;
   1153 
   1154 	return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0,
   1155 	    CDRETRIES, 30000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST));
   1156 }
   1157 
   1158 static int
   1159 do_cdioreadentries(struct cd_softc *cd, struct ioc_read_toc_entry *te,
   1160     struct cd_formatted_toc *toc)
   1161 {
   1162 	/* READ TOC format 0 command, entries */
   1163 	struct ioc_toc_header *th;
   1164 	struct cd_toc_entry *cte;
   1165 	u_int len = te->data_len;
   1166 	int ntracks;
   1167 	int error;
   1168 
   1169 	th = &toc->header;
   1170 
   1171 	if (len > sizeof(toc->entries) ||
   1172 	    len < sizeof(toc->entries[0]))
   1173 		return (EINVAL);
   1174 	error = cd_read_toc(cd, CD_TOC_FORM, te->address_format,
   1175 	    te->starting_track, toc,
   1176 	    sizeof(toc->header) + len,
   1177 	    0, 0);
   1178 	if (error)
   1179 		return (error);
   1180 	if (te->address_format == CD_LBA_FORMAT)
   1181 		for (ntracks =
   1182 		    th->ending_track - th->starting_track + 1;
   1183 		    ntracks >= 0; ntracks--) {
   1184 			cte = &toc->entries[ntracks];
   1185 			cte->addr_type = CD_LBA_FORMAT;
   1186 			if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
   1187 				cte->addr.lba = le32toh(cte->addr.lba);
   1188 			else
   1189 				cte->addr.lba = be32toh(cte->addr.lba);
   1190 		}
   1191 	if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
   1192 		th->len = le16toh(th->len);
   1193 	else
   1194 		th->len = be16toh(th->len);
   1195 	return 0;
   1196 }
   1197 
   1198 /*
   1199  * Perform special action on behalf of the user.
   1200  * Knows about the internals of this device
   1201  */
   1202 static int
   1203 cdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
   1204 {
   1205 	struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(dev));
   1206 	struct dk_softc *dksc = &cd->sc_dksc;
   1207 	struct scsipi_periph *periph = cd->sc_periph;
   1208 	struct cd_formatted_toc toc;
   1209 	int part = CDPART(dev);
   1210 	int error;
   1211 
   1212 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cdioctl 0x%lx ", cmd));
   1213 
   1214 	/*
   1215 	 * If the device is not valid, some IOCTLs can still be
   1216 	 * handled on the raw partition. Check this here.
   1217 	 */
   1218 	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 &&
   1219 	    part != RAW_PART)
   1220 		return (EIO);
   1221 
   1222 	switch (cmd) {
   1223 	case DIOCTUR: {
   1224 		/* test unit ready */
   1225 		error = scsipi_test_unit_ready(cd->sc_periph, XS_CTL_SILENT);
   1226 		*((int*)addr) = (error == 0);
   1227 		if (error == ENODEV || error == EIO || error == 0)
   1228 			return 0;
   1229 		return error;
   1230 	}
   1231 	case CDIOCPLAYTRACKS: {
   1232 		/* PLAY_MSF command */
   1233 		struct ioc_play_track *args = addr;
   1234 
   1235 		if ((error = cd_set_pa_immed(cd, 0)) != 0)
   1236 			return (error);
   1237 		return (cd_play_tracks(cd, &toc, args->start_track,
   1238 		    args->start_index, args->end_track, args->end_index));
   1239 	}
   1240 	case CDIOCPLAYMSF: {
   1241 		/* PLAY_MSF command */
   1242 		struct ioc_play_msf *args = addr;
   1243 
   1244 		if ((error = cd_set_pa_immed(cd, 0)) != 0)
   1245 			return (error);
   1246 		return (cd_play_msf(cd, args->start_m, args->start_s,
   1247 		    args->start_f, args->end_m, args->end_s, args->end_f));
   1248 	}
   1249 	case CDIOCPLAYBLOCKS: {
   1250 		/* PLAY command */
   1251 		struct ioc_play_blocks *args = addr;
   1252 
   1253 		if ((error = cd_set_pa_immed(cd, 0)) != 0)
   1254 			return (error);
   1255 		return (cd_play(cd, args->blk, args->len));
   1256 	}
   1257 	case CDIOCREADSUBCHANNEL: {
   1258 		/* READ_SUBCHANNEL command */
   1259 		struct ioc_read_subchannel *args = addr;
   1260 		struct cd_sub_channel_info data;
   1261 		u_int len = args->data_len;
   1262 
   1263 		if (len > sizeof(data) ||
   1264 		    len < sizeof(struct cd_sub_channel_header))
   1265 			return (EINVAL);
   1266 		error = cd_read_subchannel(cd, args->address_format,
   1267 		    args->data_format, args->track, &data, len, 0);
   1268 		if (error)
   1269 			return (error);
   1270 		len = uimin(len, _2btol(data.header.data_len) +
   1271 		    sizeof(struct cd_sub_channel_header));
   1272 		return (copyout(&data, args->data, len));
   1273 	}
   1274 	case CDIOCREADSUBCHANNEL_BUF: {
   1275 		/* As CDIOCREADSUBCHANNEL, but without a 2nd buffer area */
   1276 		struct ioc_read_subchannel_buf *args = addr;
   1277 		if (args->req.data_len != sizeof args->info)
   1278 			return EINVAL;
   1279 		return cd_read_subchannel(cd, args->req.address_format,
   1280 		    args->req.data_format, args->req.track, &args->info,
   1281 		    sizeof(args->info), 0);
   1282 	}
   1283 	case CDIOREADTOCHEADER: {
   1284 		/* READ TOC format 0 command, static header */
   1285 		if ((error = cd_read_toc(cd, CD_TOC_FORM, 0, 0,
   1286 		    &toc, sizeof(toc.header), 0, 0)) != 0)
   1287 			return (error);
   1288 		if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
   1289 			toc.header.len = le16toh(toc.header.len);
   1290 		else
   1291 			toc.header.len = be16toh(toc.header.len);
   1292 		memcpy(addr, &toc.header, sizeof(toc.header));
   1293 		return (0);
   1294 	}
   1295 	case CDIOREADTOCENTRYS: {
   1296 		struct ioc_read_toc_entry *te = addr;
   1297 		error = do_cdioreadentries(cd, te, &toc);
   1298 		if (error != 0)
   1299 			return error;
   1300 		return copyout(toc.entries, te->data, uimin(te->data_len,
   1301 		    toc.header.len - (sizeof(toc.header.starting_track)
   1302 			+ sizeof(toc.header.ending_track))));
   1303 	}
   1304 	case CDIOREADTOCENTRIES_BUF: {
   1305 		struct ioc_read_toc_entry_buf *te = addr;
   1306 		error = do_cdioreadentries(cd, &te->req, &toc);
   1307 		if (error != 0)
   1308 			return error;
   1309 		memcpy(te->entry, toc.entries, uimin(te->req.data_len,
   1310 		    toc.header.len - (sizeof(toc.header.starting_track)
   1311 			+ sizeof(toc.header.ending_track))));
   1312 		return 0;
   1313 	}
   1314 	case CDIOREADMSADDR: {
   1315 		/* READ TOC format 0 command, length of first track only */
   1316 		int sessno = *(int*)addr;
   1317 
   1318 		if (sessno != 0)
   1319 			return (EINVAL);
   1320 
   1321 		return (cdreadmsaddr(cd, &toc, addr));
   1322 	}
   1323 	case CDIOCSETPATCH: {
   1324 		struct ioc_patch *arg = addr;
   1325 
   1326 		return (cd_setchan(cd, arg->patch[0], arg->patch[1],
   1327 		    arg->patch[2], arg->patch[3], 0));
   1328 	}
   1329 	case CDIOCGETVOL: {
   1330 		/* MODE SENSE command (AUDIO page) */
   1331 		struct ioc_vol *arg = addr;
   1332 
   1333 		return (cd_getvol(cd, arg, 0));
   1334 	}
   1335 	case CDIOCSETVOL: {
   1336 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1337 		struct ioc_vol *arg = addr;
   1338 
   1339 		return (cd_setvol(cd, arg, 0));
   1340 	}
   1341 	case CDIOCSETMONO:
   1342 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1343 		return (cd_setchan(cd, BOTH_CHANNEL, BOTH_CHANNEL,
   1344 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
   1345 
   1346 	case CDIOCSETSTEREO:
   1347 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1348 		return (cd_setchan(cd, LEFT_CHANNEL, RIGHT_CHANNEL,
   1349 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
   1350 
   1351 	case CDIOCSETMUTE:
   1352 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1353 		return (cd_setchan(cd, MUTE_CHANNEL, MUTE_CHANNEL,
   1354 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
   1355 
   1356 	case CDIOCSETLEFT:
   1357 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1358 		return (cd_setchan(cd, LEFT_CHANNEL, LEFT_CHANNEL,
   1359 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
   1360 
   1361 	case CDIOCSETRIGHT:
   1362 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1363 		return (cd_setchan(cd, RIGHT_CHANNEL, RIGHT_CHANNEL,
   1364 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
   1365 
   1366 	case CDIOCRESUME:
   1367 		/* PAUSE command */
   1368 		return (cd_pause(cd, PA_RESUME));
   1369 	case CDIOCPAUSE:
   1370 		/* PAUSE command */
   1371 		return (cd_pause(cd, PA_PAUSE));
   1372 	case CDIOCSTART:
   1373 		return (scsipi_start(periph, SSS_START, 0));
   1374 	case CDIOCSTOP:
   1375 		return (scsipi_start(periph, SSS_STOP, 0));
   1376 	case CDIOCCLOSE:
   1377 		return (scsipi_start(periph, SSS_START|SSS_LOEJ,
   1378 		    XS_CTL_IGNORE_NOT_READY | XS_CTL_IGNORE_MEDIA_CHANGE));
   1379 	case DIOCEJECT:
   1380 		if (*(int *)addr == 0) {
   1381 			int pmask = __BIT(part);
   1382 			/*
   1383 			 * Don't force eject: check that we are the only
   1384 			 * partition open. If so, unlock it.
   1385 			 */
   1386 			if (DK_BUSY(dksc, pmask) == 0) {
   1387 				error = scsipi_prevent(periph, SPAMR_ALLOW,
   1388 				    XS_CTL_IGNORE_NOT_READY);
   1389 				if (error)
   1390 					return (error);
   1391 			} else {
   1392 				return (EBUSY);
   1393 			}
   1394 		}
   1395 		/* FALLTHROUGH */
   1396 	case CDIOCEJECT: /* FALLTHROUGH */
   1397 	case ODIOCEJECT:
   1398 		error = scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0);
   1399 		if (error == 0)
   1400 			/* Make sure cdclose() will do silent operations */
   1401 			cd->flags |= CDF_EJECTED;
   1402 		return error;
   1403 	case DIOCCACHESYNC:
   1404 		/* SYNCHRONISE CACHES command */
   1405 		return (cdcachesync(periph, 0));
   1406 	case CDIOCALLOW:
   1407 		return (scsipi_prevent(periph, SPAMR_ALLOW, 0));
   1408 	case CDIOCPREVENT:
   1409 		return (scsipi_prevent(periph, SPAMR_PREVENT_DT, 0));
   1410 	case DIOCLOCK:
   1411 		return (scsipi_prevent(periph,
   1412 		    (*(int *)addr) ? SPAMR_PREVENT_DT : SPAMR_ALLOW, 0));
   1413 	case CDIOCSETDEBUG:
   1414 		cd->sc_periph->periph_dbflags |= (SCSIPI_DB1 | SCSIPI_DB2);
   1415 		return (0);
   1416 	case CDIOCCLRDEBUG:
   1417 		cd->sc_periph->periph_dbflags &= ~(SCSIPI_DB1 | SCSIPI_DB2);
   1418 		return (0);
   1419 	case CDIOCRESET:
   1420 	case SCIOCRESET:
   1421 		return (cd_reset(cd));
   1422 	case CDIOCLOADUNLOAD:
   1423 		/* LOAD_UNLOAD command */
   1424 		return (cd_load_unload(cd, addr));
   1425 	case DVD_AUTH:
   1426 		/* GPCMD_REPORT_KEY or GPCMD_SEND_KEY command */
   1427 		return (dvd_auth(cd, addr));
   1428 	case DVD_READ_STRUCT:
   1429 		/* GPCMD_READ_DVD_STRUCTURE command */
   1430 		return (dvd_read_struct(cd, addr));
   1431 	case MMCGETDISCINFO:
   1432 		/*
   1433 		 * GET_CONFIGURATION, READ_DISCINFO, READ_TRACKINFO,
   1434 		 * (READ_TOCf2, READ_CD_CAPACITY and GET_CONFIGURATION) commands
   1435 		 */
   1436 		return mmc_getdiscinfo(periph, (struct mmc_discinfo *) addr);
   1437 	case MMCGETTRACKINFO:
   1438 		/* READ TOCf2, READ_CD_CAPACITY and READ_TRACKINFO commands */
   1439 		return mmc_gettrackinfo(periph, (struct mmc_trackinfo *) addr);
   1440 	case MMCOP:
   1441 		/*
   1442 		 * CLOSE TRACK/SESSION, RESERVE_TRACK, REPAIR_TRACK,
   1443 		 * SYNCHRONISE_CACHE commands
   1444 		 */
   1445 		return mmc_do_op(periph, (struct mmc_op *) addr);
   1446 	case MMCSETUPWRITEPARAMS :
   1447 		/* MODE SENSE page 5, MODE_SELECT page 5 commands */
   1448 		return mmc_setup_writeparams(periph, (struct mmc_writeparams *) addr);
   1449 	default:
   1450 		error = dk_ioctl(dksc, dev, cmd, addr, flag, l);
   1451 		if (error == ENOTTY)
   1452 			error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, l);
   1453 		return (error);
   1454 	}
   1455 
   1456 #ifdef DIAGNOSTIC
   1457 	panic("cdioctl: impossible");
   1458 #endif
   1459 }
   1460 
   1461 static void
   1462 cd_label(device_t self, struct disklabel *lp)
   1463 {
   1464 	struct cd_softc *cd = device_private(self);
   1465 	struct scsipi_periph *periph = cd->sc_periph;
   1466 	struct cd_formatted_toc toc;
   1467 	int lastsession = 0;
   1468 
   1469 	strncpy(lp->d_typename, "optical media", 16);
   1470 	lp->d_rpm = 300;
   1471 	lp->d_flags |= D_REMOVABLE;
   1472 
   1473 	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) != 0) {
   1474 		lp->d_flags |= D_SCSI_MMC;
   1475 		(void) cdreadmsaddr(cd, &toc, &lastsession);
   1476 	}
   1477 
   1478 	lp->d_partitions[0].p_offset = 0;
   1479 	lp->d_partitions[0].p_size = lp->d_secperunit;
   1480 	lp->d_partitions[0].p_cdsession = lastsession;
   1481 	lp->d_partitions[0].p_fstype = FS_ISO9660;
   1482 
   1483 	lp->d_partitions[RAW_PART].p_offset = 0;
   1484 	lp->d_partitions[RAW_PART].p_size = lp->d_secperunit;
   1485 	lp->d_partitions[RAW_PART].p_fstype = FS_UDF;
   1486 }
   1487 
   1488 /*
   1489  * Reading a disc's total capacity is apparently a very difficult issue for the
   1490  * SCSI standardisation group. Every disc type seems to have its own
   1491  * (re)invented size request method and modifiers. The failsafe way of
   1492  * determining the total (max) capacity i.e. not the recorded capacity but the
   1493  * total maximum capacity is to request the info on the last track and
   1494  * calculate the last lba.
   1495  *
   1496  * For ROM drives, we go for the CD recorded capacity. For recordable devices
   1497  * we count.
   1498  */
   1499 static int
   1500 read_cd_capacity(struct scsipi_periph *periph, uint32_t *blksize, u_long *last_lba)
   1501 {
   1502 	struct scsipi_read_cd_capacity    cap_cmd;
   1503 	/*
   1504 	 * XXX: see PR 48550 and PR 48754:
   1505 	 * the ahcisata(4) driver can not deal with unaligned
   1506 	 * data, so align this "a bit"
   1507 	 */
   1508 	struct scsipi_read_cd_cap_data    cap __aligned(2);
   1509 	struct scsipi_read_discinfo       di_cmd;
   1510 	struct scsipi_read_discinfo_data  di __aligned(2);
   1511 	struct scsipi_read_trackinfo      ti_cmd;
   1512 	struct scsipi_read_trackinfo_data ti __aligned(2);
   1513 	uint32_t track_start, track_size;
   1514 	int error, flags, msb, lsb, last_track;
   1515 
   1516 	/* if the device doesn't grok capacity, return the dummies */
   1517 	if (periph->periph_quirks & PQUIRK_NOCAPACITY)
   1518 		return 0;
   1519 
   1520 	/* first try read CD capacity for blksize and last recorded lba */
   1521 	/* issue the cd capacity request */
   1522 	flags = XS_CTL_DATA_IN;
   1523 	memset(&cap_cmd, 0, sizeof(cap_cmd));
   1524 	memset(&cap, 0, sizeof(cap));
   1525 	cap_cmd.opcode = READ_CD_CAPACITY;
   1526 
   1527 	error = scsipi_command(periph,
   1528 	    (void *) &cap_cmd, sizeof(cap_cmd),
   1529 	    (void *) &cap,     sizeof(cap),
   1530 	    CDRETRIES, 30000, NULL, flags);
   1531 	if (error)
   1532 		return error;
   1533 
   1534 	/* retrieve values and sanity check them */
   1535 	*blksize  = _4btol(cap.length);
   1536 	*last_lba = _4btol(cap.addr);
   1537 
   1538 	/* blksize is 2048 for CD, but some drives give gibberish */
   1539 	if ((*blksize < 512) || ((*blksize & 511) != 0)
   1540 	    || (*blksize > 16*1024)) {
   1541 		if (*blksize > 16*1024)
   1542 			aprint_error("read_cd_capacity: extra large block "
   1543 			    "size %u found - limiting to 2kByte\n",
   1544 			    *blksize);
   1545 		*blksize = 2048;	/* some drives lie ! */
   1546 	}
   1547 
   1548 	/* If the device doesn't handle READ_DISCINFO properly, */
   1549 	/* return the dummies */
   1550 	if (periph->periph_quirks & PQUIRK_NOREADDISCINFO)
   1551 		return 0;
   1552 
   1553 	/* recordables have READ_DISCINFO implemented */
   1554 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
   1555 	memset(&di_cmd, 0, sizeof(di_cmd));
   1556 	di_cmd.opcode = READ_DISCINFO;
   1557 	_lto2b(READ_DISCINFO_BIGSIZE, di_cmd.data_len);
   1558 
   1559 	error = scsipi_command(periph,
   1560 	    (void *) &di_cmd,  sizeof(di_cmd),
   1561 	    (void *) &di,      READ_DISCINFO_BIGSIZE,
   1562 	    CDRETRIES, 30000, NULL, flags);
   1563 	if (error == 0) {
   1564 		msb = di.last_track_last_session_msb;
   1565 		lsb = di.last_track_last_session_lsb;
   1566 		last_track = (msb << 8) | lsb;
   1567 
   1568 		/* request info on last track */
   1569 		memset(&ti_cmd, 0, sizeof(ti_cmd));
   1570 		ti_cmd.opcode = READ_TRACKINFO;
   1571 		ti_cmd.addr_type = 1;			/* on tracknr */
   1572 		_lto4b(last_track, ti_cmd.address);	/* tracknr    */
   1573 		_lto2b(sizeof(ti), ti_cmd.data_len);
   1574 
   1575 		error = scsipi_command(periph,
   1576 		    (void *) &ti_cmd,  sizeof(ti_cmd),
   1577 		    (void *) &ti,      sizeof(ti),
   1578 		    CDRETRIES, 30000, NULL, flags);
   1579 		if (error == 0) {
   1580 			track_start = _4btol(ti.track_start);
   1581 			track_size  = _4btol(ti.track_size);
   1582 
   1583 			/* overwrite only with a sane value */
   1584 			if (track_start + track_size >= 100)
   1585 				*last_lba = (u_long) track_start + track_size -1;
   1586 		}
   1587 	}
   1588 
   1589 	/* sanity check for lba_size */
   1590 	if (*last_lba < 100)
   1591 		*last_lba = 400000-1;
   1592 
   1593 	return 0;
   1594 }
   1595 
   1596 /*
   1597  * Find out from the device what its capacity is
   1598  */
   1599 static u_long
   1600 cd_size(struct cd_softc *cd, int flags)
   1601 {
   1602 	uint32_t blksize = 2048;
   1603 	u_long last_lba = 0, size;
   1604 	int error;
   1605 
   1606 	error = read_cd_capacity(cd->sc_periph, &blksize, &last_lba);
   1607 	if (error)
   1608 		goto error;
   1609 
   1610 	if (blksize != 2048) {
   1611 		if (cd_setblksize(cd) == 0) {
   1612 			blksize = 2048;
   1613 			error = read_cd_capacity(cd->sc_periph,
   1614 			    &blksize, &last_lba);
   1615 			if (error)
   1616 				goto error;
   1617 		}
   1618 	}
   1619 
   1620 	size = last_lba + 1;
   1621 	cd->params.blksize     = blksize;
   1622 	cd->params.disksize    = size;
   1623 	cd->params.disksize512 = ((u_int64_t)cd->params.disksize * blksize) / DEV_BSIZE;
   1624 
   1625 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2,
   1626 	    ("cd_size: %u %lu\n", blksize, size));
   1627 
   1628 	return size;
   1629 
   1630 error:
   1631 	/* something went wrong */
   1632 	cd->params.blksize     = 2048;
   1633 	cd->params.disksize    = 0;
   1634 	cd->params.disksize512 = 0;
   1635 
   1636 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cd_size: failed\n"));
   1637 
   1638 	return 0;
   1639 }
   1640 
   1641 /*
   1642  * Get scsi driver to send a "start playing" command
   1643  */
   1644 static int
   1645 cd_play(struct cd_softc *cd, int blkno, int nblks)
   1646 {
   1647 	struct scsipi_play cmd;
   1648 
   1649 	memset(&cmd, 0, sizeof(cmd));
   1650 	cmd.opcode = PLAY;
   1651 	_lto4b(blkno, cmd.blk_addr);
   1652 	_lto2b(nblks, cmd.xfer_len);
   1653 
   1654 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
   1655 	    CDRETRIES, 30000, NULL, 0));
   1656 }
   1657 
   1658 /*
   1659  * Get scsi driver to send a "start playing" command
   1660  */
   1661 static int
   1662 cd_play_tracks(struct cd_softc *cd, struct cd_formatted_toc *toc, int strack,
   1663     int sindex, int etrack, int eindex)
   1664 {
   1665 	int error;
   1666 
   1667 	if (!etrack)
   1668 		return (EIO);
   1669 	if (strack > etrack)
   1670 		return (EINVAL);
   1671 
   1672 	error = cd_load_toc(cd, CD_TOC_FORM, toc, 0);
   1673 	if (error)
   1674 		return (error);
   1675 
   1676 	if (++etrack > (toc->header.ending_track+1))
   1677 		etrack = toc->header.ending_track+1;
   1678 
   1679 	strack -= toc->header.starting_track;
   1680 	etrack -= toc->header.starting_track;
   1681 	if (strack < 0)
   1682 		return (EINVAL);
   1683 
   1684 	return (cd_play_msf(cd, toc->entries[strack].addr.msf.minute,
   1685 	    toc->entries[strack].addr.msf.second,
   1686 	    toc->entries[strack].addr.msf.frame,
   1687 	    toc->entries[etrack].addr.msf.minute,
   1688 	    toc->entries[etrack].addr.msf.second,
   1689 	    toc->entries[etrack].addr.msf.frame));
   1690 }
   1691 
   1692 /*
   1693  * Get scsi driver to send a "play msf" command
   1694  */
   1695 static int
   1696 cd_play_msf(struct cd_softc *cd, int startm, int starts, int startf, int endm,
   1697     int ends, int endf)
   1698 {
   1699 	struct scsipi_play_msf cmd;
   1700 
   1701 	memset(&cmd, 0, sizeof(cmd));
   1702 	cmd.opcode = PLAY_MSF;
   1703 	cmd.start_m = startm;
   1704 	cmd.start_s = starts;
   1705 	cmd.start_f = startf;
   1706 	cmd.end_m = endm;
   1707 	cmd.end_s = ends;
   1708 	cmd.end_f = endf;
   1709 
   1710 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
   1711 	    CDRETRIES, 30000, NULL, 0));
   1712 }
   1713 
   1714 /*
   1715  * Get scsi driver to send a "start up" command
   1716  */
   1717 static int
   1718 cd_pause(struct cd_softc *cd, int go)
   1719 {
   1720 	struct scsipi_pause cmd;
   1721 
   1722 	memset(&cmd, 0, sizeof(cmd));
   1723 	cmd.opcode = PAUSE;
   1724 	cmd.resume = go & 0xff;
   1725 
   1726 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
   1727 	    CDRETRIES, 30000, NULL, 0));
   1728 }
   1729 
   1730 /*
   1731  * Get scsi driver to send a "RESET" command
   1732  */
   1733 static int
   1734 cd_reset(struct cd_softc *cd)
   1735 {
   1736 
   1737 	return (scsipi_command(cd->sc_periph, 0, 0, 0, 0,
   1738 	    CDRETRIES, 30000, NULL, XS_CTL_RESET));
   1739 }
   1740 
   1741 /*
   1742  * Read subchannel
   1743  */
   1744 static int
   1745 cd_read_subchannel(struct cd_softc *cd, int mode, int format, int track,
   1746     struct cd_sub_channel_info *data, int len, int flags)
   1747 {
   1748 	struct scsipi_read_subchannel cmd;
   1749 
   1750 	memset(&cmd, 0, sizeof(cmd));
   1751 	cmd.opcode = READ_SUBCHANNEL;
   1752 	if (mode == CD_MSF_FORMAT)
   1753 		cmd.byte2 |= CD_MSF;
   1754 	cmd.byte3 = SRS_SUBQ;
   1755 	cmd.subchan_format = format;
   1756 	cmd.track = track;
   1757 	_lto2b(len, cmd.data_len);
   1758 
   1759 	return (scsipi_command(cd->sc_periph,
   1760 	    (void *)&cmd, sizeof(struct scsipi_read_subchannel),
   1761 	    (void *)data, len,
   1762 	    CDRETRIES, 30000, NULL, flags | XS_CTL_DATA_IN | XS_CTL_SILENT));
   1763 }
   1764 
   1765 /*
   1766  * Read table of contents
   1767  */
   1768 static int
   1769 cd_read_toc(struct cd_softc *cd, int respf, int mode, int start,
   1770     struct cd_formatted_toc *toc, int len, int flags, int control)
   1771 {
   1772 	struct scsipi_read_toc cmd;
   1773 	int ntoc;
   1774 
   1775 	memset(&cmd, 0, sizeof(cmd));
   1776 #if 0
   1777 	if (len != sizeof(struct ioc_toc_header))
   1778 		ntoc = ((len) - sizeof(struct ioc_toc_header)) /
   1779 		    sizeof(struct cd_toc_entry);
   1780 	else
   1781 #endif
   1782 	ntoc = len;
   1783 	cmd.opcode = READ_TOC;
   1784 	if (mode == CD_MSF_FORMAT)
   1785 		cmd.addr_mode |= CD_MSF;
   1786 	cmd.resp_format = respf;
   1787 	cmd.from_track = start;
   1788 	_lto2b(ntoc, cmd.data_len);
   1789 	cmd.control = control;
   1790 
   1791 	return (scsipi_command(cd->sc_periph,
   1792 	    (void *)&cmd, sizeof(cmd), (void *)toc, len, CDRETRIES,
   1793 	    30000, NULL, flags | XS_CTL_DATA_IN));
   1794 }
   1795 
   1796 static int
   1797 cd_load_toc(struct cd_softc *cd, int respf, struct cd_formatted_toc *toc, int flags)
   1798 {
   1799 	int ntracks, len, error;
   1800 
   1801 	if ((error = cd_read_toc(cd, respf, 0, 0, toc, sizeof(toc->header),
   1802 	    flags, 0)) != 0)
   1803 		return (error);
   1804 
   1805 	ntracks = toc->header.ending_track - toc->header.starting_track + 1;
   1806 	len = (ntracks + 1) * sizeof(struct cd_toc_entry) +
   1807 	    sizeof(toc->header);
   1808 	if ((error = cd_read_toc(cd, respf, CD_MSF_FORMAT, 0, toc, len,
   1809 	    flags, 0)) != 0)
   1810 		return (error);
   1811 	return (0);
   1812 }
   1813 
   1814 /*
   1815  * Get the scsi driver to send a full inquiry to the device and use the
   1816  * results to fill out the disk parameter structure.
   1817  */
   1818 static int
   1819 cd_get_parms(struct cd_softc *cd, int flags)
   1820 {
   1821 
   1822 	/*
   1823 	 * give a number of sectors so that sec * trks * cyls
   1824 	 * is <= disk_size
   1825 	 */
   1826 	if (cd_size(cd, flags) == 0)
   1827 		return (ENXIO);
   1828 	return (0);
   1829 }
   1830 
   1831 static int
   1832 cdsize(dev_t dev)
   1833 {
   1834 
   1835 	/* CD-ROMs are read-only. */
   1836 	return (-1);
   1837 }
   1838 
   1839 static int
   1840 cddump(dev_t dev, daddr_t blkno, void *va, size_t size)
   1841 {
   1842 
   1843 	/* Not implemented. */
   1844 	return (ENXIO);
   1845 }
   1846 
   1847 #define	dvd_copy_key(dst, src)		memcpy((dst), (src), sizeof(dvd_key))
   1848 #define	dvd_copy_challenge(dst, src)	memcpy((dst), (src), sizeof(dvd_challenge))
   1849 
   1850 static int
   1851 dvd_auth(struct cd_softc *cd, dvd_authinfo *a)
   1852 {
   1853 	struct scsipi_generic cmd;
   1854 	u_int8_t bf[20];
   1855 	int error;
   1856 
   1857 	memset(cmd.bytes, 0, 15);
   1858 	memset(bf, 0, sizeof(bf));
   1859 
   1860 	switch (a->type) {
   1861 	case DVD_LU_SEND_AGID:
   1862 		cmd.opcode = GPCMD_REPORT_KEY;
   1863 		cmd.bytes[8] = 8;
   1864 		cmd.bytes[9] = 0 | (0 << 6);
   1865 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
   1866 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1867 		if (error)
   1868 			return (error);
   1869 		a->lsa.agid = bf[7] >> 6;
   1870 		return (0);
   1871 
   1872 	case DVD_LU_SEND_CHALLENGE:
   1873 		cmd.opcode = GPCMD_REPORT_KEY;
   1874 		cmd.bytes[8] = 16;
   1875 		cmd.bytes[9] = 1 | (a->lsc.agid << 6);
   1876 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
   1877 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1878 		if (error)
   1879 			return (error);
   1880 		dvd_copy_challenge(a->lsc.chal, &bf[4]);
   1881 		return (0);
   1882 
   1883 	case DVD_LU_SEND_KEY1:
   1884 		cmd.opcode = GPCMD_REPORT_KEY;
   1885 		cmd.bytes[8] = 12;
   1886 		cmd.bytes[9] = 2 | (a->lsk.agid << 6);
   1887 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
   1888 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1889 		if (error)
   1890 			return (error);
   1891 		dvd_copy_key(a->lsk.key, &bf[4]);
   1892 		return (0);
   1893 
   1894 	case DVD_LU_SEND_TITLE_KEY:
   1895 		cmd.opcode = GPCMD_REPORT_KEY;
   1896 		_lto4b(a->lstk.lba, &cmd.bytes[1]);
   1897 		cmd.bytes[8] = 12;
   1898 		cmd.bytes[9] = 4 | (a->lstk.agid << 6);
   1899 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
   1900 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1901 		if (error)
   1902 			return (error);
   1903 		a->lstk.cpm = (bf[4] >> 7) & 1;
   1904 		a->lstk.cp_sec = (bf[4] >> 6) & 1;
   1905 		a->lstk.cgms = (bf[4] >> 4) & 3;
   1906 		dvd_copy_key(a->lstk.title_key, &bf[5]);
   1907 		return (0);
   1908 
   1909 	case DVD_LU_SEND_ASF:
   1910 		cmd.opcode = GPCMD_REPORT_KEY;
   1911 		cmd.bytes[8] = 8;
   1912 		cmd.bytes[9] = 5 | (a->lsasf.agid << 6);
   1913 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
   1914 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1915 		if (error)
   1916 			return (error);
   1917 		a->lsasf.asf = bf[7] & 1;
   1918 		return (0);
   1919 
   1920 	case DVD_HOST_SEND_CHALLENGE:
   1921 		cmd.opcode = GPCMD_SEND_KEY;
   1922 		cmd.bytes[8] = 16;
   1923 		cmd.bytes[9] = 1 | (a->hsc.agid << 6);
   1924 		bf[1] = 14;
   1925 		dvd_copy_challenge(&bf[4], a->hsc.chal);
   1926 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
   1927 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
   1928 		if (error)
   1929 			return (error);
   1930 		a->type = DVD_LU_SEND_KEY1;
   1931 		return (0);
   1932 
   1933 	case DVD_HOST_SEND_KEY2:
   1934 		cmd.opcode = GPCMD_SEND_KEY;
   1935 		cmd.bytes[8] = 12;
   1936 		cmd.bytes[9] = 3 | (a->hsk.agid << 6);
   1937 		bf[1] = 10;
   1938 		dvd_copy_key(&bf[4], a->hsk.key);
   1939 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
   1940 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
   1941 		if (error) {
   1942 			a->type = DVD_AUTH_FAILURE;
   1943 			return (error);
   1944 		}
   1945 		a->type = DVD_AUTH_ESTABLISHED;
   1946 		return (0);
   1947 
   1948 	case DVD_INVALIDATE_AGID:
   1949 		cmd.opcode = GPCMD_REPORT_KEY;
   1950 		cmd.bytes[9] = 0x3f | (a->lsa.agid << 6);
   1951 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
   1952 		    CDRETRIES, 30000, NULL, 0);
   1953 		if (error)
   1954 			return (error);
   1955 		return (0);
   1956 
   1957 	case DVD_LU_SEND_RPC_STATE:
   1958 		cmd.opcode = GPCMD_REPORT_KEY;
   1959 		cmd.bytes[8] = 8;
   1960 		cmd.bytes[9] = 8 | (0 << 6);
   1961 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
   1962 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1963 		if (error)
   1964 			return (error);
   1965 		a->lrpcs.type = (bf[4] >> 6) & 3;
   1966 		a->lrpcs.vra = (bf[4] >> 3) & 7;
   1967 		a->lrpcs.ucca = (bf[4]) & 7;
   1968 		a->lrpcs.region_mask = bf[5];
   1969 		a->lrpcs.rpc_scheme = bf[6];
   1970 		return (0);
   1971 
   1972 	case DVD_HOST_SEND_RPC_STATE:
   1973 		cmd.opcode = GPCMD_SEND_KEY;
   1974 		cmd.bytes[8] = 8;
   1975 		cmd.bytes[9] = 6 | (0 << 6);
   1976 		bf[1] = 6;
   1977 		bf[4] = a->hrpcs.pdrc;
   1978 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
   1979 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
   1980 		if (error)
   1981 			return (error);
   1982 		return (0);
   1983 
   1984 	default:
   1985 		return (ENOTTY);
   1986 	}
   1987 }
   1988 
   1989 static int
   1990 dvd_read_physical(struct cd_softc *cd, dvd_struct *s)
   1991 {
   1992 	struct scsipi_generic cmd;
   1993 	u_int8_t bf[4 + 4 * 20], *bufp;
   1994 	int error;
   1995 	struct dvd_layer *layer;
   1996 	int i;
   1997 
   1998 	memset(cmd.bytes, 0, 15);
   1999 	memset(bf, 0, sizeof(bf));
   2000 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
   2001 	cmd.bytes[6] = s->type;
   2002 	_lto2b(sizeof(bf), &cmd.bytes[7]);
   2003 
   2004 	cmd.bytes[5] = s->physical.layer_num;
   2005 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
   2006 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   2007 	if (error)
   2008 		return (error);
   2009 	for (i = 0, bufp = &bf[4], layer = &s->physical.layer[0]; i < 4;
   2010 	     i++, bufp += 20, layer++) {
   2011 		memset(layer, 0, sizeof(*layer));
   2012                 layer->book_version = bufp[0] & 0xf;
   2013                 layer->book_type = bufp[0] >> 4;
   2014                 layer->min_rate = bufp[1] & 0xf;
   2015                 layer->disc_size = bufp[1] >> 4;
   2016                 layer->layer_type = bufp[2] & 0xf;
   2017                 layer->track_path = (bufp[2] >> 4) & 1;
   2018                 layer->nlayers = (bufp[2] >> 5) & 3;
   2019                 layer->track_density = bufp[3] & 0xf;
   2020                 layer->linear_density = bufp[3] >> 4;
   2021                 layer->start_sector = _4btol(&bufp[4]);
   2022                 layer->end_sector = _4btol(&bufp[8]);
   2023                 layer->end_sector_l0 = _4btol(&bufp[12]);
   2024                 layer->bca = bufp[16] >> 7;
   2025 	}
   2026 	return (0);
   2027 }
   2028 
   2029 static int
   2030 dvd_read_copyright(struct cd_softc *cd, dvd_struct *s)
   2031 {
   2032 	struct scsipi_generic cmd;
   2033 	u_int8_t bf[8];
   2034 	int error;
   2035 
   2036 	memset(cmd.bytes, 0, 15);
   2037 	memset(bf, 0, sizeof(bf));
   2038 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
   2039 	cmd.bytes[6] = s->type;
   2040 	_lto2b(sizeof(bf), &cmd.bytes[7]);
   2041 
   2042 	cmd.bytes[5] = s->copyright.layer_num;
   2043 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
   2044 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   2045 	if (error)
   2046 		return (error);
   2047 	s->copyright.cpst = bf[4];
   2048 	s->copyright.rmi = bf[5];
   2049 	return (0);
   2050 }
   2051 
   2052 static int
   2053 dvd_read_disckey(struct cd_softc *cd, dvd_struct *s)
   2054 {
   2055 	struct scsipi_generic cmd;
   2056 	u_int8_t *bf;
   2057 	int error;
   2058 
   2059 	bf = malloc(4 + 2048, M_TEMP, M_WAITOK|M_ZERO);
   2060 	if (bf == NULL)
   2061 		return EIO;
   2062 	memset(cmd.bytes, 0, 15);
   2063 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
   2064 	cmd.bytes[6] = s->type;
   2065 	_lto2b(4 + 2048, &cmd.bytes[7]);
   2066 
   2067 	cmd.bytes[9] = s->disckey.agid << 6;
   2068 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 4 + 2048,
   2069 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   2070 	if (error == 0)
   2071 		memcpy(s->disckey.value, &bf[4], 2048);
   2072 	free(bf, M_TEMP);
   2073 	return error;
   2074 }
   2075 
   2076 static int
   2077 dvd_read_bca(struct cd_softc *cd, dvd_struct *s)
   2078 {
   2079 	struct scsipi_generic cmd;
   2080 	u_int8_t bf[4 + 188];
   2081 	int error;
   2082 
   2083 	memset(cmd.bytes, 0, 15);
   2084 	memset(bf, 0, sizeof(bf));
   2085 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
   2086 	cmd.bytes[6] = s->type;
   2087 	_lto2b(sizeof(bf), &cmd.bytes[7]);
   2088 
   2089 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
   2090 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   2091 	if (error)
   2092 		return (error);
   2093 	s->bca.len = _2btol(&bf[0]);
   2094 	if (s->bca.len < 12 || s->bca.len > 188)
   2095 		return (EIO);
   2096 	memcpy(s->bca.value, &bf[4], s->bca.len);
   2097 	return (0);
   2098 }
   2099 
   2100 static int
   2101 dvd_read_manufact(struct cd_softc *cd, dvd_struct *s)
   2102 {
   2103 	struct scsipi_generic cmd;
   2104 	u_int8_t *bf;
   2105 	int error;
   2106 
   2107 	bf = malloc(4 + 2048, M_TEMP, M_WAITOK|M_ZERO);
   2108 	if (bf == NULL)
   2109 		return (EIO);
   2110 	memset(cmd.bytes, 0, 15);
   2111 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
   2112 	cmd.bytes[6] = s->type;
   2113 	_lto2b(4 + 2048, &cmd.bytes[7]);
   2114 
   2115 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 4 + 2048,
   2116 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   2117 	if (error == 0) {
   2118 		s->manufact.len = _2btol(&bf[0]);
   2119 		if (s->manufact.len >= 0 && s->manufact.len <= 2048)
   2120 			memcpy(s->manufact.value, &bf[4], s->manufact.len);
   2121 		else
   2122 			error = EIO;
   2123 	}
   2124 	free(bf, M_TEMP);
   2125 	return error;
   2126 }
   2127 
   2128 static int
   2129 dvd_read_struct(struct cd_softc *cd, dvd_struct *s)
   2130 {
   2131 
   2132 	switch (s->type) {
   2133 	case DVD_STRUCT_PHYSICAL:
   2134 		return (dvd_read_physical(cd, s));
   2135 	case DVD_STRUCT_COPYRIGHT:
   2136 		return (dvd_read_copyright(cd, s));
   2137 	case DVD_STRUCT_DISCKEY:
   2138 		return (dvd_read_disckey(cd, s));
   2139 	case DVD_STRUCT_BCA:
   2140 		return (dvd_read_bca(cd, s));
   2141 	case DVD_STRUCT_MANUFACT:
   2142 		return (dvd_read_manufact(cd, s));
   2143 	default:
   2144 		return (EINVAL);
   2145 	}
   2146 }
   2147 
   2148 static int
   2149 cd_mode_sense(struct cd_softc *cd, u_int8_t byte2, void *sense, size_t size,
   2150     int page, int flags, int *big)
   2151 {
   2152 
   2153 	if (cd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) {
   2154 		*big = 1;
   2155 		return scsipi_mode_sense_big(cd->sc_periph, byte2, page, sense,
   2156 		    size + sizeof(struct scsi_mode_parameter_header_10),
   2157 		    flags, CDRETRIES, 20000);
   2158 	} else {
   2159 		*big = 0;
   2160 		return scsipi_mode_sense(cd->sc_periph, byte2, page, sense,
   2161 		    size + sizeof(struct scsi_mode_parameter_header_6),
   2162 		    flags, CDRETRIES, 20000);
   2163 	}
   2164 }
   2165 
   2166 static int
   2167 cd_mode_select(struct cd_softc *cd, u_int8_t byte2, void *sense, size_t size,
   2168     int flags, int big)
   2169 {
   2170 
   2171 	if (big) {
   2172 		struct scsi_mode_parameter_header_10 *header = sense;
   2173 
   2174 		_lto2b(0, header->data_length);
   2175 		return scsipi_mode_select_big(cd->sc_periph, byte2, sense,
   2176 		    size + sizeof(struct scsi_mode_parameter_header_10),
   2177 		    flags, CDRETRIES, 20000);
   2178 	} else {
   2179 		struct scsi_mode_parameter_header_6 *header = sense;
   2180 
   2181 		header->data_length = 0;
   2182 		return scsipi_mode_select(cd->sc_periph, byte2, sense,
   2183 		    size + sizeof(struct scsi_mode_parameter_header_6),
   2184 		    flags, CDRETRIES, 20000);
   2185 	}
   2186 }
   2187 
   2188 static int
   2189 cd_set_pa_immed(struct cd_softc *cd, int flags)
   2190 {
   2191 	struct {
   2192 		union {
   2193 			struct scsi_mode_parameter_header_6 small;
   2194 			struct scsi_mode_parameter_header_10 big;
   2195 		} header;
   2196 		struct cd_audio_page page;
   2197 	} data;
   2198 	int error;
   2199 	uint8_t oflags;
   2200 	int big, byte2;
   2201 	struct cd_audio_page *page;
   2202 
   2203 	byte2 = SMS_DBD;
   2204 try_again:
   2205 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
   2206 	    AUDIO_PAGE, flags, &big)) != 0) {
   2207 		if (byte2 == SMS_DBD) {
   2208 			/* Device may not understand DBD; retry without */
   2209 			byte2 = 0;
   2210 			goto try_again;
   2211 		}
   2212 		return (error);
   2213 	}
   2214 
   2215 	if (big)
   2216 		page = (void *)((u_long)&data.header.big +
   2217 				sizeof data.header.big +
   2218 				_2btol(data.header.big.blk_desc_len));
   2219 	else
   2220 		page = (void *)((u_long)&data.header.small +
   2221 				sizeof data.header.small +
   2222 				data.header.small.blk_desc_len);
   2223 
   2224 	oflags = page->flags;
   2225 	page->flags &= ~CD_PA_SOTC;
   2226 	page->flags |= CD_PA_IMMED;
   2227 	if (oflags == page->flags)
   2228 		return (0);
   2229 
   2230 	return (cd_mode_select(cd, SMS_PF, &data,
   2231 	    sizeof(struct scsi_mode_page_header) + page->pg_length,
   2232 	    flags, big));
   2233 }
   2234 
   2235 static int
   2236 cd_setchan(struct cd_softc *cd, int p0, int p1, int p2, int p3, int flags)
   2237 {
   2238 	struct {
   2239 		union {
   2240 			struct scsi_mode_parameter_header_6 small;
   2241 			struct scsi_mode_parameter_header_10 big;
   2242 		} header;
   2243 		struct cd_audio_page page;
   2244 	} data;
   2245 	int error;
   2246 	int big, byte2;
   2247 	struct cd_audio_page *page;
   2248 
   2249 	byte2 = SMS_DBD;
   2250 try_again:
   2251 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
   2252 	    AUDIO_PAGE, flags, &big)) != 0) {
   2253 		if (byte2 == SMS_DBD) {
   2254 			/* Device may not understand DBD; retry without */
   2255 			byte2 = 0;
   2256 			goto try_again;
   2257 		}
   2258 		return (error);
   2259 	}
   2260 
   2261 	if (big)
   2262 		page = (void *)((u_long)&data.header.big +
   2263 				sizeof data.header.big +
   2264 				_2btol(data.header.big.blk_desc_len));
   2265 	else
   2266 		page = (void *)((u_long)&data.header.small +
   2267 				sizeof data.header.small +
   2268 				data.header.small.blk_desc_len);
   2269 
   2270 	page->port[0].channels = p0;
   2271 	page->port[1].channels = p1;
   2272 	page->port[2].channels = p2;
   2273 	page->port[3].channels = p3;
   2274 
   2275 	return (cd_mode_select(cd, SMS_PF, &data,
   2276 	    sizeof(struct scsi_mode_page_header) + page->pg_length,
   2277 	    flags, big));
   2278 }
   2279 
   2280 static int
   2281 cd_getvol(struct cd_softc *cd, struct ioc_vol *arg, int flags)
   2282 {
   2283 	struct {
   2284 		union {
   2285 			struct scsi_mode_parameter_header_6 small;
   2286 			struct scsi_mode_parameter_header_10 big;
   2287 		} header;
   2288 		struct cd_audio_page page;
   2289 	} data;
   2290 	int error;
   2291 	int big, byte2;
   2292 	struct cd_audio_page *page;
   2293 
   2294 	byte2 = SMS_DBD;
   2295 try_again:
   2296 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
   2297 	    AUDIO_PAGE, flags, &big)) != 0) {
   2298 		if (byte2 == SMS_DBD) {
   2299 			/* Device may not understand DBD; retry without */
   2300 			byte2 = 0;
   2301 			goto try_again;
   2302 		}
   2303 		return (error);
   2304 	}
   2305 
   2306 	if (big)
   2307 		page = (void *)((u_long)&data.header.big +
   2308 				sizeof data.header.big +
   2309 				_2btol(data.header.big.blk_desc_len));
   2310 	else
   2311 		page = (void *)((u_long)&data.header.small +
   2312 				sizeof data.header.small +
   2313 				data.header.small.blk_desc_len);
   2314 
   2315 	arg->vol[0] = page->port[0].volume;
   2316 	arg->vol[1] = page->port[1].volume;
   2317 	arg->vol[2] = page->port[2].volume;
   2318 	arg->vol[3] = page->port[3].volume;
   2319 
   2320 	return (0);
   2321 }
   2322 
   2323 static int
   2324 cd_setvol(struct cd_softc *cd, const struct ioc_vol *arg, int flags)
   2325 {
   2326 	struct {
   2327 		union {
   2328 			struct scsi_mode_parameter_header_6 small;
   2329 			struct scsi_mode_parameter_header_10 big;
   2330 		} header;
   2331 		struct cd_audio_page page;
   2332 	} data, mask;
   2333 	int error;
   2334 	int big, byte2;
   2335 	struct cd_audio_page *page, *page2;
   2336 
   2337 	byte2 = SMS_DBD;
   2338 try_again:
   2339 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
   2340 	    AUDIO_PAGE, flags, &big)) != 0) {
   2341 		if (byte2 == SMS_DBD) {
   2342 			/* Device may not understand DBD; retry without */
   2343 			byte2 = 0;
   2344 			goto try_again;
   2345 		}
   2346 		return (error);
   2347 	}
   2348 	if ((error = cd_mode_sense(cd, byte2, &mask, sizeof(mask.page),
   2349 	    AUDIO_PAGE|SMS_PCTRL_CHANGEABLE, flags, &big)) != 0)
   2350 		return (error);
   2351 
   2352 	if (big) {
   2353 		page = (void *)((u_long)&data.header.big +
   2354 				sizeof data.header.big +
   2355 				_2btol(data.header.big.blk_desc_len));
   2356 		page2 = (void *)((u_long)&mask.header.big +
   2357 				sizeof mask.header.big +
   2358 				_2btol(mask.header.big.blk_desc_len));
   2359 	} else {
   2360 		page = (void *)((u_long)&data.header.small +
   2361 				sizeof data.header.small +
   2362 				data.header.small.blk_desc_len);
   2363 		page2 = (void *)((u_long)&mask.header.small +
   2364 				sizeof mask.header.small +
   2365 				mask.header.small.blk_desc_len);
   2366 	}
   2367 
   2368 	page->port[0].volume = arg->vol[0] & page2->port[0].volume;
   2369 	page->port[1].volume = arg->vol[1] & page2->port[1].volume;
   2370 	page->port[2].volume = arg->vol[2] & page2->port[2].volume;
   2371 	page->port[3].volume = arg->vol[3] & page2->port[3].volume;
   2372 
   2373 	page->port[0].channels = CHANNEL_0;
   2374 	page->port[1].channels = CHANNEL_1;
   2375 
   2376 	return (cd_mode_select(cd, SMS_PF, &data,
   2377 	    sizeof(struct scsi_mode_page_header) + page->pg_length,
   2378 	    flags, big));
   2379 }
   2380 
   2381 static int
   2382 cd_load_unload(struct cd_softc *cd, struct ioc_load_unload *args)
   2383 {
   2384 	struct scsipi_load_unload cmd;
   2385 
   2386 	memset(&cmd, 0, sizeof(cmd));
   2387 	cmd.opcode = LOAD_UNLOAD;
   2388 	cmd.options = args->options;    /* ioctl uses MMC values */
   2389 	cmd.slot = args->slot;
   2390 
   2391 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
   2392 	    CDRETRIES, 200000, NULL, 0));
   2393 }
   2394 
   2395 static int
   2396 cd_setblksize(struct cd_softc *cd)
   2397 {
   2398 	struct {
   2399 		union {
   2400 			struct scsi_mode_parameter_header_6 small;
   2401 			struct scsi_mode_parameter_header_10 big;
   2402 		} header;
   2403 		struct scsi_general_block_descriptor blk_desc;
   2404 	} data;
   2405 	int error;
   2406 	int big, bsize;
   2407 	struct scsi_general_block_descriptor *bdesc;
   2408 
   2409 	if ((error = cd_mode_sense(cd, 0, &data, sizeof(data.blk_desc), 0, 0,
   2410 	    &big)) != 0)
   2411 		return (error);
   2412 
   2413 	if (big) {
   2414 		bdesc = (void *)(&data.header.big + 1);
   2415 		bsize = _2btol(data.header.big.blk_desc_len);
   2416 	} else {
   2417 		bdesc = (void *)(&data.header.small + 1);
   2418 		bsize = data.header.small.blk_desc_len;
   2419 	}
   2420 
   2421 	if (bsize == 0) {
   2422 		printf("cd_setblksize: trying to change bsize, but no blk_desc\n");
   2423 
   2424 		return (EINVAL);
   2425 	}
   2426 	if (_3btol(bdesc->blklen) == 2048) {
   2427 		printf("cd_setblksize: trying to change bsize, but blk_desc is correct\n");
   2428 		return (EINVAL);
   2429 	}
   2430 
   2431 	_lto3b(2048, bdesc->blklen);
   2432 
   2433 	return (cd_mode_select(cd, SMS_PF, &data, sizeof(data.blk_desc), 0,
   2434 	    big));
   2435 }
   2436 
   2437 
   2438 static int
   2439 mmc_profile2class(uint16_t mmc_profile)
   2440 {
   2441 	switch (mmc_profile) {
   2442 	case 0x01 : /* SCSI discs */
   2443 	case 0x02 :
   2444 		/* this can't happen really, cd.c wouldn't have matched */
   2445 		return MMC_CLASS_DISC;
   2446 	case 0x03 : /* Magneto Optical with sector erase */
   2447 	case 0x04 : /* Magneto Optical write once        */
   2448 	case 0x05 : /* Advance Storage Magneto Optical   */
   2449 		return MMC_CLASS_MO;
   2450 	case 0x00 : /* Unknown MMC profile, can also be CD-ROM */
   2451 	case 0x08 : /* CD-ROM  */
   2452 	case 0x09 : /* CD-R    */
   2453 	case 0x0a : /* CD-RW   */
   2454 		return MMC_CLASS_CD;
   2455 	case 0x10 : /* DVD-ROM */
   2456 	case 0x11 : /* DVD-R   */
   2457 	case 0x12 : /* DVD-RAM */
   2458 	case 0x13 : /* DVD-RW restricted overwrite */
   2459 	case 0x14 : /* DVD-RW sequential */
   2460 	case 0x1a : /* DVD+RW  */
   2461 	case 0x1b : /* DVD+R   */
   2462 	case 0x2a : /* DVD+RW Dual layer */
   2463 	case 0x2b : /* DVD+R Dual layer */
   2464 	case 0x50 : /* HD DVD-ROM */
   2465 	case 0x51 : /* HD DVD-R   */
   2466 	case 0x52 : /* HD DVD-RW; DVD-RAM like */
   2467 		return MMC_CLASS_DVD;
   2468 	case 0x40 : /* BD-ROM  */
   2469 	case 0x41 : /* BD-R Sequential recording (SRM) */
   2470 	case 0x42 : /* BD-R Random Recording (RRM) */
   2471 	case 0x43 : /* BD-RE */
   2472 		return MMC_CLASS_BD;
   2473 	}
   2474 	return MMC_CLASS_UNKN;
   2475 }
   2476 
   2477 
   2478 /*
   2479  * Drive/media combination is reflected in a series of features that can
   2480  * either be current or dormant. We try to make sense out of them to create a
   2481  * set of easy to use flags that abstract the device/media capabilities.
   2482  */
   2483 
   2484 static void
   2485 mmc_process_feature(struct mmc_discinfo *mmc_discinfo,
   2486 		    uint16_t feature, int cur, uint8_t *rpos)
   2487 {
   2488 	uint32_t blockingnr;
   2489 	uint64_t flags;
   2490 
   2491 	if (cur == 1) {
   2492 		flags = mmc_discinfo->mmc_cur;
   2493 	} else {
   2494 		flags = mmc_discinfo->mmc_cap;
   2495 	}
   2496 
   2497 	switch (feature) {
   2498 	case 0x0010 :	/* random readable feature */
   2499 		blockingnr  =  rpos[5] | (rpos[4] << 8);
   2500 		if (blockingnr > 1)
   2501 			flags |= MMC_CAP_PACKET;
   2502 
   2503 		/* RW error page */
   2504 		break;
   2505 	case 0x0020 :	/* random writable feature */
   2506 		flags |= MMC_CAP_RECORDABLE;
   2507 		flags |= MMC_CAP_REWRITABLE;
   2508 		blockingnr  =  rpos[9] | (rpos[8] << 8);
   2509 		if (blockingnr > 1)
   2510 			flags |= MMC_CAP_PACKET;
   2511 		break;
   2512 	case 0x0021 :	/* incremental streaming write feature */
   2513 		flags |= MMC_CAP_RECORDABLE;
   2514 		flags |= MMC_CAP_SEQUENTIAL;
   2515 		if (cur)
   2516 			mmc_discinfo->link_block_penalty = rpos[4];
   2517 		if (rpos[2] & 1)
   2518 			flags |= MMC_CAP_ZEROLINKBLK;
   2519 		break;
   2520 	case 0x0022 : 	/* (obsolete) erase support feature */
   2521 		flags |= MMC_CAP_RECORDABLE;
   2522 		flags |= MMC_CAP_ERASABLE;
   2523 		break;
   2524 	case 0x0023 :	/* formatting media support feature */
   2525 		flags |= MMC_CAP_RECORDABLE;
   2526 		flags |= MMC_CAP_FORMATTABLE;
   2527 		break;
   2528 	case 0x0024 :	/* hardware assisted defect management feature */
   2529 		flags |= MMC_CAP_HW_DEFECTFREE;
   2530 		break;
   2531 	case 0x0025 : 	/* write once */
   2532 		flags |= MMC_CAP_RECORDABLE;
   2533 		break;
   2534 	case 0x0026 :	/* restricted overwrite feature */
   2535 		flags |= MMC_CAP_RECORDABLE;
   2536 		flags |= MMC_CAP_REWRITABLE;
   2537 		flags |= MMC_CAP_STRICTOVERWRITE;
   2538 		break;
   2539 	case 0x0028 :	/* MRW formatted media support feature */
   2540 		flags |= MMC_CAP_MRW;
   2541 		break;
   2542 	case 0x002b :	/* DVD+R read (and opt. write) support */
   2543 		flags |= MMC_CAP_SEQUENTIAL;
   2544 		if (rpos[0] & 1) /* write support */
   2545 			flags |= MMC_CAP_RECORDABLE;
   2546 		break;
   2547 	case 0x002c :	/* rigid restricted overwrite feature */
   2548 		flags |= MMC_CAP_RECORDABLE;
   2549 		flags |= MMC_CAP_REWRITABLE;
   2550 		flags |= MMC_CAP_STRICTOVERWRITE;
   2551 		if (rpos[0] & 1) /* blank bit */
   2552 			flags |= MMC_CAP_BLANKABLE;
   2553 		break;
   2554 	case 0x002d :	/* track at once recording feature */
   2555 		flags |= MMC_CAP_RECORDABLE;
   2556 		flags |= MMC_CAP_SEQUENTIAL;
   2557 		break;
   2558 	case 0x002f :	/* DVD-R/-RW write feature */
   2559 		flags |= MMC_CAP_RECORDABLE;
   2560 		if (rpos[0] & 2) /* DVD-RW bit */
   2561 			flags |= MMC_CAP_BLANKABLE;
   2562 		break;
   2563 	case 0x0038 :	/* BD-R SRM with pseudo overwrite */
   2564 		flags |= MMC_CAP_PSEUDOOVERWRITE;
   2565 		break;
   2566 	default :
   2567 		/* ignore */
   2568 		break;
   2569 	}
   2570 
   2571 	if (cur == 1) {
   2572 		mmc_discinfo->mmc_cur = flags;
   2573 	} else {
   2574 		mmc_discinfo->mmc_cap = flags;
   2575 	}
   2576 }
   2577 
   2578 static int
   2579 mmc_getdiscinfo_cdrom(struct scsipi_periph *periph,
   2580 		      struct mmc_discinfo *mmc_discinfo)
   2581 {
   2582 	struct scsipi_read_toc      gtoc_cmd;
   2583 	struct scsipi_toc_header   *toc_hdr;
   2584 	struct scsipi_toc_msinfo   *toc_msinfo;
   2585 	const uint32_t buffer_size = 1024;
   2586 	uint32_t req_size;
   2587 	uint8_t  *buffer;
   2588 	int error, flags;
   2589 
   2590 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
   2591 	/*
   2592 	 * Fabricate mmc_discinfo for CD-ROM. Some values are really `dont
   2593 	 * care' but others might be of interest to programs.
   2594 	 */
   2595 
   2596 	mmc_discinfo->disc_state	 = MMC_STATE_FULL;
   2597 	mmc_discinfo->last_session_state = MMC_STATE_FULL;
   2598 	mmc_discinfo->bg_format_state    = MMC_BGFSTATE_COMPLETED;
   2599 	mmc_discinfo->link_block_penalty = 7;	/* not relevant */
   2600 
   2601 	/* get number of sessions and first tracknr in last session */
   2602 	flags = XS_CTL_DATA_IN;
   2603 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
   2604 	gtoc_cmd.opcode      = READ_TOC;
   2605 	gtoc_cmd.addr_mode   = CD_MSF;		/* not relevant        */
   2606 	gtoc_cmd.resp_format = CD_TOC_MSINFO;	/* multisession info   */
   2607 	gtoc_cmd.from_track  = 0;		/* reserved, must be 0 */
   2608 	req_size = sizeof(*toc_hdr) + sizeof(*toc_msinfo);
   2609 	_lto2b(req_size, gtoc_cmd.data_len);
   2610 
   2611 	error = scsipi_command(periph,
   2612 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   2613 		(void *)buffer,    req_size,
   2614 		CDRETRIES, 30000, NULL, flags);
   2615 	if (error)
   2616 		goto out;
   2617 	toc_hdr    = (struct scsipi_toc_header *)  buffer;
   2618 	toc_msinfo = (struct scsipi_toc_msinfo *) (buffer + 4);
   2619 	mmc_discinfo->num_sessions = toc_hdr->last - toc_hdr->first + 1;
   2620 	mmc_discinfo->first_track  = toc_hdr->first;
   2621 	mmc_discinfo->first_track_last_session = toc_msinfo->tracknr;
   2622 
   2623 	/* get last track of last session */
   2624 	flags = XS_CTL_DATA_IN;
   2625 	gtoc_cmd.resp_format  = CD_TOC_FORM;	/* formatted toc */
   2626 	req_size = sizeof(*toc_hdr);
   2627 	_lto2b(req_size, gtoc_cmd.data_len);
   2628 
   2629 	error = scsipi_command(periph,
   2630 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   2631 		(void *)buffer,    req_size,
   2632 		CDRETRIES, 30000, NULL, flags);
   2633 	if (error)
   2634 		goto out;
   2635 	toc_hdr    = (struct scsipi_toc_header *) buffer;
   2636 	mmc_discinfo->last_track_last_session = toc_hdr->last;
   2637 	mmc_discinfo->num_tracks = toc_hdr->last - toc_hdr->first + 1;
   2638 
   2639 	/* TODO how to handle disc_barcode and disc_id */
   2640 	/* done */
   2641 
   2642 out:
   2643 	free(buffer, M_TEMP);
   2644 	return error;
   2645 }
   2646 
   2647 static int
   2648 mmc_getdiscinfo_dvdrom(struct scsipi_periph *periph,
   2649 		       struct mmc_discinfo *mmc_discinfo)
   2650 {
   2651 	struct scsipi_read_toc   gtoc_cmd;
   2652 	struct scsipi_toc_header toc_hdr;
   2653 	uint32_t req_size;
   2654 	int error, flags;
   2655 
   2656 	/*
   2657 	 * Fabricate mmc_discinfo for DVD-ROM. Some values are really `dont
   2658 	 * care' but others might be of interest to programs.
   2659 	 */
   2660 
   2661 	mmc_discinfo->disc_state	 = MMC_STATE_FULL;
   2662 	mmc_discinfo->last_session_state = MMC_STATE_FULL;
   2663 	mmc_discinfo->bg_format_state    = MMC_BGFSTATE_COMPLETED;
   2664 	mmc_discinfo->link_block_penalty = 16;	/* not relevant */
   2665 
   2666 	/* get number of sessions and first tracknr in last session */
   2667 	flags = XS_CTL_DATA_IN;
   2668 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
   2669 	gtoc_cmd.opcode      = READ_TOC;
   2670 	gtoc_cmd.addr_mode   = 0;		/* LBA                 */
   2671 	gtoc_cmd.resp_format = CD_TOC_FORM;	/* multisession info   */
   2672 	gtoc_cmd.from_track  = 1;		/* first track         */
   2673 	req_size = sizeof(toc_hdr);
   2674 	_lto2b(req_size, gtoc_cmd.data_len);
   2675 
   2676 	error = scsipi_command(periph,
   2677 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   2678 		(void *)&toc_hdr,  req_size,
   2679 		CDRETRIES, 30000, NULL, flags);
   2680 	if (error)
   2681 		return error;
   2682 
   2683 	/* DVD-ROM squashes the track/session space */
   2684 	mmc_discinfo->num_sessions = toc_hdr.last - toc_hdr.first + 1;
   2685 	mmc_discinfo->num_tracks   = mmc_discinfo->num_sessions;
   2686 	mmc_discinfo->first_track  = toc_hdr.first;
   2687 	mmc_discinfo->first_track_last_session = toc_hdr.last;
   2688 	mmc_discinfo->last_track_last_session  = toc_hdr.last;
   2689 
   2690 	/* TODO how to handle disc_barcode and disc_id */
   2691 	/* done */
   2692 	return 0;
   2693 }
   2694 
   2695 static int
   2696 mmc_getdiscinfo(struct scsipi_periph *periph,
   2697 		struct mmc_discinfo *mmc_discinfo)
   2698 {
   2699 	struct scsipi_get_configuration   gc_cmd;
   2700 	struct scsipi_get_conf_data      *gc;
   2701 	struct scsipi_get_conf_feature   *gcf;
   2702 	struct scsipi_read_discinfo       di_cmd;
   2703 	struct scsipi_read_discinfo_data  di __aligned(2);
   2704 	const uint32_t buffer_size = 0x200; /* XXX RPZ USB3 SCSI size issue */
   2705 	uint32_t pos;
   2706 	u_long   last_lba = 0;
   2707 	uint8_t  *buffer, *fpos;
   2708 	int feature, last_feature, features_len, feature_cur, feature_len;
   2709 	int lsb, msb, error, flags;
   2710 
   2711 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
   2712 
   2713 	/* initialise structure */
   2714 	memset(mmc_discinfo, 0, sizeof(struct mmc_discinfo));
   2715 	mmc_discinfo->mmc_profile = 0x00;	/* unknown */
   2716 	mmc_discinfo->mmc_class   = MMC_CLASS_UNKN;
   2717 	mmc_discinfo->mmc_cur     = 0;
   2718 	mmc_discinfo->mmc_cap     = 0;
   2719 	mmc_discinfo->link_block_penalty = 0;
   2720 
   2721 	/* determine mmc profile and class */
   2722 	flags = XS_CTL_DATA_IN;
   2723 	memset(&gc_cmd, 0, sizeof(gc_cmd));
   2724 	gc_cmd.opcode = GET_CONFIGURATION;
   2725 	_lto2b(GET_CONF_NO_FEATURES_LEN, gc_cmd.data_len);
   2726 
   2727 	gc = (struct scsipi_get_conf_data *) buffer;
   2728 
   2729 	error = scsipi_command(periph,
   2730 		(void *)&gc_cmd, sizeof(gc_cmd),
   2731 		(void *) gc,     GET_CONF_NO_FEATURES_LEN,
   2732 		CDRETRIES, 30000, NULL, flags);
   2733 	if (error)
   2734 		goto out;
   2735 
   2736 	mmc_discinfo->mmc_profile = _2btol(gc->mmc_profile);
   2737 	mmc_discinfo->mmc_class = mmc_profile2class(mmc_discinfo->mmc_profile);
   2738 
   2739 	/* assume 2048 sector size unless told otherwise */
   2740 	mmc_discinfo->sector_size = 2048;
   2741 	error = read_cd_capacity(periph, &mmc_discinfo->sector_size, &last_lba);
   2742 	if (error)
   2743 		goto out;
   2744 
   2745 	mmc_discinfo->last_possible_lba = (uint32_t) last_lba;
   2746 
   2747 	/* Read in all features to determine device capabilities */
   2748 	last_feature = feature = 0;
   2749 	do {
   2750 		/* determine mmc profile and class */
   2751 		flags = XS_CTL_DATA_IN;
   2752 		memset(&gc_cmd, 0, sizeof(gc_cmd));
   2753 		gc_cmd.opcode = GET_CONFIGURATION;
   2754 		_lto2b(last_feature, gc_cmd.start_at_feature);
   2755 		_lto2b(buffer_size, gc_cmd.data_len);
   2756 		memset(gc, 0, buffer_size);
   2757 
   2758 		error = scsipi_command(periph,
   2759 			(void *)&gc_cmd, sizeof(gc_cmd),
   2760 			(void *) gc,     buffer_size,
   2761 			CDRETRIES, 30000, NULL, flags);
   2762 		if (error) {
   2763 			/* ieeek... break out of loop... i dunno what to do */
   2764 			break;
   2765 		}
   2766 
   2767 		features_len = _4btol(gc->data_len);
   2768 		if (features_len < 4 || features_len > buffer_size)
   2769 			break;
   2770 
   2771 		pos  = 0;
   2772 		fpos = &gc->feature_desc[0];
   2773 		while (pos < features_len - 4) {
   2774 			gcf = (struct scsipi_get_conf_feature *) fpos;
   2775 
   2776 			feature     = _2btol(gcf->featurecode);
   2777 			feature_cur = gcf->flags & 1;
   2778 			feature_len = gcf->additional_length;
   2779 
   2780 			mmc_process_feature(mmc_discinfo,
   2781 					    feature, feature_cur,
   2782 					    gcf->feature_dependent);
   2783 
   2784 			last_feature = MAX(last_feature, feature);
   2785 #ifdef DIAGNOSTIC
   2786 			/* assert((feature_len & 3) == 0); */
   2787 			if ((feature_len & 3) != 0) {
   2788 				printf("feature %d having length %d\n",
   2789 					feature, feature_len);
   2790 			}
   2791 #endif
   2792 
   2793 			pos  += 4 + feature_len;
   2794 			fpos += 4 + feature_len;
   2795 		}
   2796 		/* unlikely to ever grow past our 1kb buffer */
   2797 	} while (features_len >= 0xffff);
   2798 
   2799 	/*
   2800 	 * Fixup CD-RW drives that are on crack.
   2801 	 *
   2802 	 * Some drives report the capability to incrementally write
   2803 	 * sequentially on CD-R(W) media...  nice, but this should not be
   2804 	 * active for a fixed packet formatted CD-RW media. Other report the
   2805 	 * ability of HW_DEFECTFREE even when the media is NOT MRW
   2806 	 * formatted....
   2807 	 */
   2808 	if (mmc_discinfo->mmc_profile == 0x0a) {
   2809 		if ((mmc_discinfo->mmc_cur & MMC_CAP_SEQUENTIAL) == 0)
   2810 			mmc_discinfo->mmc_cur |= MMC_CAP_STRICTOVERWRITE;
   2811 		if (mmc_discinfo->mmc_cur & MMC_CAP_STRICTOVERWRITE)
   2812 			mmc_discinfo->mmc_cur &= ~MMC_CAP_SEQUENTIAL;
   2813 		if (mmc_discinfo->mmc_cur & MMC_CAP_MRW) {
   2814 			mmc_discinfo->mmc_cur &= ~MMC_CAP_SEQUENTIAL;
   2815 			mmc_discinfo->mmc_cur &= ~MMC_CAP_STRICTOVERWRITE;
   2816 		} else {
   2817 			mmc_discinfo->mmc_cur &= ~MMC_CAP_HW_DEFECTFREE;
   2818 		}
   2819 	}
   2820 	if (mmc_discinfo->mmc_profile == 0x09) {
   2821 		mmc_discinfo->mmc_cur &= ~MMC_CAP_REWRITABLE;
   2822 	}
   2823 
   2824 #ifdef DEBUG
   2825 	printf("CD mmc %d, mmc_cur 0x%"PRIx64", mmc_cap 0x%"PRIx64"\n",
   2826 		mmc_discinfo->mmc_profile,
   2827 	 	mmc_discinfo->mmc_cur, mmc_discinfo->mmc_cap);
   2828 #endif
   2829 
   2830 	/* read in disc state and number of sessions and tracks */
   2831 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
   2832 	memset(&di_cmd, 0, sizeof(di_cmd));
   2833 	di_cmd.opcode = READ_DISCINFO;
   2834 	di_cmd.data_len[1] = READ_DISCINFO_BIGSIZE;
   2835 
   2836 	error = scsipi_command(periph,
   2837 		(void *)&di_cmd, sizeof(di_cmd),
   2838 		(void *)&di,     READ_DISCINFO_BIGSIZE,
   2839 		CDRETRIES, 30000, NULL, flags);
   2840 
   2841 	if (error) {
   2842 		/* discinfo call failed, emulate for cd-rom/dvd-rom */
   2843 		if (mmc_discinfo->mmc_profile == 0x08) /* CD-ROM */
   2844 			error = mmc_getdiscinfo_cdrom(periph, mmc_discinfo);
   2845 		else if (mmc_discinfo->mmc_profile == 0x10) /* DVD-ROM */
   2846 			error = mmc_getdiscinfo_dvdrom(periph, mmc_discinfo);
   2847 		else /* CD/DVD drive is violating specs */
   2848 			error = EIO;
   2849 		goto out;
   2850 	}
   2851 
   2852 	/* call went OK */
   2853 	mmc_discinfo->disc_state         =  di.disc_state & 3;
   2854 	mmc_discinfo->last_session_state = (di.disc_state >> 2) & 3;
   2855 	mmc_discinfo->bg_format_state    = (di.disc_state2 & 3);
   2856 
   2857 	lsb = di.num_sessions_lsb;
   2858 	msb = di.num_sessions_msb;
   2859 	mmc_discinfo->num_sessions = lsb | (msb << 8);
   2860 
   2861 	mmc_discinfo->first_track = di.first_track;
   2862 	lsb = di.first_track_last_session_lsb;
   2863 	msb = di.first_track_last_session_msb;
   2864 	mmc_discinfo->first_track_last_session = lsb | (msb << 8);
   2865 	lsb = di.last_track_last_session_lsb;
   2866 	msb = di.last_track_last_session_msb;
   2867 	mmc_discinfo->last_track_last_session  = lsb | (msb << 8);
   2868 
   2869 	mmc_discinfo->num_tracks = mmc_discinfo->last_track_last_session -
   2870 		mmc_discinfo->first_track + 1;
   2871 
   2872 	/* set misc. flags and parameters from this disc info */
   2873 	if (di.disc_state  &  16)
   2874 		mmc_discinfo->mmc_cur |= MMC_CAP_BLANKABLE;
   2875 
   2876 	if (di.disc_state2 & 128) {
   2877 		mmc_discinfo->disc_id = _4btol(di.discid);
   2878 		mmc_discinfo->disc_flags |= MMC_DFLAGS_DISCIDVALID;
   2879 	}
   2880 	if (di.disc_state2 &  64) {
   2881 		mmc_discinfo->disc_barcode = _8btol(di.disc_bar_code);
   2882 		mmc_discinfo->disc_flags |= MMC_DFLAGS_BARCODEVALID;
   2883 	}
   2884 	if (di.disc_state2 &  32)
   2885 		mmc_discinfo->disc_flags |= MMC_DFLAGS_UNRESTRICTED;
   2886 
   2887 	if (di.disc_state2 &  16) {
   2888 		mmc_discinfo->application_code = di.application_code;
   2889 		mmc_discinfo->disc_flags |= MMC_DFLAGS_APPCODEVALID;
   2890 	}
   2891 
   2892 	/* done */
   2893 
   2894 out:
   2895 	free(buffer, M_TEMP);
   2896 	return error;
   2897 }
   2898 
   2899 static int
   2900 mmc_gettrackinfo_cdrom(struct scsipi_periph *periph,
   2901 		       struct mmc_trackinfo *trackinfo)
   2902 {
   2903 	struct scsipi_read_toc            gtoc_cmd;
   2904 	struct scsipi_toc_header         *toc_hdr;
   2905 	struct scsipi_toc_rawtoc         *rawtoc;
   2906 	uint32_t track_start, track_size;
   2907 	uint32_t last_recorded, next_writable;
   2908 	uint32_t lba, next_track_start, lead_out;
   2909 	const uint32_t buffer_size = 4 * 1024;	/* worst case TOC estimate */
   2910 	uint8_t *buffer;
   2911 	uint8_t track_sessionnr, sessionnr, adr, tno, point;
   2912 	uint8_t control, tmin, tsec, tframe, pmin, psec, pframe;
   2913 	int size, req_size;
   2914 	int error, flags;
   2915 
   2916 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
   2917 
   2918 	/*
   2919 	 * Emulate read trackinfo for CD-ROM using the raw-TOC.
   2920 	 *
   2921 	 * Not all information is present and this presents a problem.  Track
   2922 	 * starts are known for each track but other values are deducted.
   2923 	 *
   2924 	 * For a complete overview of `magic' values used here, see the
   2925 	 * SCSI/ATAPI MMC documentation. Note that the `magic' values have no
   2926 	 * names, they are specified as numbers.
   2927 	 */
   2928 
   2929 	/* get raw toc to process, first header to check size */
   2930 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
   2931 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
   2932 	gtoc_cmd.opcode      = READ_TOC;
   2933 	gtoc_cmd.addr_mode   = CD_MSF;		/* not relevant     */
   2934 	gtoc_cmd.resp_format = CD_TOC_RAW;	/* raw toc          */
   2935 	gtoc_cmd.from_track  = 1;		/* first session    */
   2936 	req_size = sizeof(*toc_hdr);
   2937 	_lto2b(req_size, gtoc_cmd.data_len);
   2938 
   2939 	error = scsipi_command(periph,
   2940 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   2941 		(void *)buffer,    req_size,
   2942 		CDRETRIES, 30000, NULL, flags);
   2943 	if (error)
   2944 		goto out;
   2945 	toc_hdr = (struct scsipi_toc_header *) buffer;
   2946 	if (_2btol(toc_hdr->length) > buffer_size - 2) {
   2947 #ifdef DIAGNOSTIC
   2948 		printf("increase buffersize in mmc_readtrackinfo_cdrom\n");
   2949 #endif
   2950 		error = ENOBUFS;
   2951 		goto out;
   2952 	}
   2953 
   2954 	/* read in complete raw toc */
   2955 	req_size = _2btol(toc_hdr->length);
   2956 	req_size = 2*((req_size + 1) / 2);	/* for ATAPI */
   2957 	_lto2b(req_size, gtoc_cmd.data_len);
   2958 
   2959 	error = scsipi_command(periph,
   2960 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   2961 		(void *)buffer,    req_size,
   2962 		CDRETRIES, 30000, NULL, flags);
   2963 	if (error)
   2964 		goto out;
   2965 
   2966 	toc_hdr = (struct scsipi_toc_header *) buffer;
   2967 	rawtoc  = (struct scsipi_toc_rawtoc *) (buffer + 4);
   2968 
   2969 	track_start      = 0;
   2970 	track_size       = 0;
   2971 	last_recorded    = 0;
   2972 	next_writable    = 0;
   2973 	flags            = 0;
   2974 
   2975 	next_track_start = 0;
   2976 	track_sessionnr  = MAXTRACK;	/* by definition */
   2977 	lead_out         = 0;
   2978 
   2979 	size = req_size - sizeof(struct scsipi_toc_header) + 1;
   2980 	while (size > 0) {
   2981 		/* get track start and session end */
   2982 		tno       = rawtoc->tno;
   2983 		sessionnr = rawtoc->sessionnr;
   2984 		adr       = rawtoc->adrcontrol >> 4;
   2985 		control   = rawtoc->adrcontrol & 0xf;
   2986 		point     = rawtoc->point;
   2987 		tmin      = rawtoc->min;
   2988 		tsec      = rawtoc->sec;
   2989 		tframe    = rawtoc->frame;
   2990 		pmin      = rawtoc->pmin;
   2991 		psec      = rawtoc->psec;
   2992 		pframe    = rawtoc->pframe;
   2993 
   2994 		if (tno == 0 && sessionnr && adr == 1) {
   2995 			lba = hmsf2lba(0, pmin, psec, pframe);
   2996 			if (point == trackinfo->tracknr) {
   2997 				track_start = lba;
   2998 				track_sessionnr = sessionnr;
   2999 			}
   3000 			if (point == trackinfo->tracknr + 1) {
   3001 				/* estimate size */
   3002 				track_size = lba - track_start;
   3003 				next_track_start = lba;
   3004 			}
   3005 			if (point == 0xa2) {
   3006 				lead_out = lba;
   3007 			}
   3008 			if (point <= 0x63) {
   3009 				/* CD's ok, DVD are glued */
   3010 				/* last_tracknr = point; */
   3011 			}
   3012 			if (sessionnr == track_sessionnr) {
   3013 				last_recorded = lead_out;
   3014 			}
   3015 		}
   3016 		if (tno == 0 && sessionnr && adr == 5) {
   3017 			lba = hmsf2lba(0, tmin, tsec, tframe);
   3018 			if (sessionnr == track_sessionnr) {
   3019 				next_writable = lba;
   3020 			}
   3021 		}
   3022 
   3023 		if ((control & (3<<2)) == 4)		/* 01xxb */
   3024 			flags |= MMC_TRACKINFO_DATA;
   3025 		if ((control & (1<<2)) == 0) {		/* x0xxb */
   3026 			flags |= MMC_TRACKINFO_AUDIO;
   3027 			if (control & 1)		/* xxx1b */
   3028 				flags |= MMC_TRACKINFO_PRE_EMPH;
   3029 		}
   3030 
   3031 		rawtoc++;
   3032 		size -= sizeof(struct scsipi_toc_rawtoc);
   3033 	}
   3034 
   3035 	/* process found values; some voodoo */
   3036 	/* if no tracksize tracknr is the last of the disc */
   3037 	if ((track_size == 0) && last_recorded) {
   3038 		track_size = last_recorded - track_start;
   3039 	}
   3040 	/* if last_recorded < tracksize, tracksize is overestimated */
   3041 	if (last_recorded) {
   3042 		if (last_recorded - track_start <= track_size) {
   3043 			track_size = last_recorded - track_start;
   3044 			flags |= MMC_TRACKINFO_LRA_VALID;
   3045 		}
   3046 	}
   3047 	/* check if its a the last track of the sector */
   3048 	if (next_writable) {
   3049 		if (next_track_start > next_writable)
   3050 			flags |= MMC_TRACKINFO_NWA_VALID;
   3051 	}
   3052 
   3053 	/* no flag set -> no values */
   3054 	if ((flags & MMC_TRACKINFO_LRA_VALID) == 0)
   3055 		last_recorded = 0;
   3056 	if ((flags & MMC_TRACKINFO_NWA_VALID) == 0)
   3057 		next_writable = 0;
   3058 
   3059 	/* fill in */
   3060 	/* trackinfo->tracknr preserved */
   3061 	trackinfo->sessionnr  = track_sessionnr;
   3062 	trackinfo->track_mode = 7;	/* data, incremental  */
   3063 	trackinfo->data_mode  = 8;	/* 2048 bytes mode1   */
   3064 
   3065 	trackinfo->flags = flags;
   3066 	trackinfo->track_start   = track_start;
   3067 	trackinfo->next_writable = next_writable;
   3068 	trackinfo->free_blocks   = 0;
   3069 	trackinfo->packet_size   = 1;
   3070 	trackinfo->track_size    = track_size;
   3071 	trackinfo->last_recorded = last_recorded;
   3072 
   3073 out:
   3074 	free(buffer, M_TEMP);
   3075 	return error;
   3076 
   3077 }
   3078 
   3079 static int
   3080 mmc_gettrackinfo_dvdrom(struct scsipi_periph *periph,
   3081 			struct mmc_trackinfo *trackinfo)
   3082 {
   3083 	struct scsipi_read_toc            gtoc_cmd;
   3084 	struct scsipi_toc_header         *toc_hdr;
   3085 	struct scsipi_toc_formatted      *toc;
   3086 	uint32_t tracknr, track_start, track_size;
   3087 	uint32_t lba, lead_out;
   3088 	const uint32_t buffer_size = 4 * 1024;	/* worst case TOC estimate */
   3089 	uint8_t *buffer;
   3090 	uint8_t control, last_tracknr;
   3091 	int size, req_size;
   3092 	int error, flags;
   3093 
   3094 
   3095 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
   3096 	/*
   3097 	 * Emulate read trackinfo for DVD-ROM. We can't use the raw-TOC as the
   3098 	 * CD-ROM emulation uses since the specification tells us that no such
   3099 	 * thing is defined for DVD's. The reason for this is due to the large
   3100 	 * number of tracks and that would clash with the `magic' values. This
   3101 	 * suxs.
   3102 	 *
   3103 	 * Not all information is present and this presents a problem.
   3104 	 * Track starts are known for each track but other values are
   3105 	 * deducted.
   3106 	 */
   3107 
   3108 	/* get formatted toc to process, first header to check size */
   3109 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
   3110 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
   3111 	gtoc_cmd.opcode      = READ_TOC;
   3112 	gtoc_cmd.addr_mode   = 0;		/* lba's please     */
   3113 	gtoc_cmd.resp_format = CD_TOC_FORM;	/* formatted toc    */
   3114 	gtoc_cmd.from_track  = 1;		/* first track      */
   3115 	req_size = sizeof(*toc_hdr);
   3116 	_lto2b(req_size, gtoc_cmd.data_len);
   3117 
   3118 	error = scsipi_command(periph,
   3119 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   3120 		(void *)buffer,    req_size,
   3121 		CDRETRIES, 30000, NULL, flags);
   3122 	if (error)
   3123 		goto out;
   3124 	toc_hdr = (struct scsipi_toc_header *) buffer;
   3125 	if (_2btol(toc_hdr->length) > buffer_size - 2) {
   3126 #ifdef DIAGNOSTIC
   3127 		printf("increase buffersize in mmc_readtrackinfo_dvdrom\n");
   3128 #endif
   3129 		error = ENOBUFS;
   3130 		goto out;
   3131 	}
   3132 
   3133 	/* read in complete formatted toc */
   3134 	req_size = _2btol(toc_hdr->length);
   3135 	_lto2b(req_size, gtoc_cmd.data_len);
   3136 
   3137 	error = scsipi_command(periph,
   3138 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   3139 		(void *)buffer,    req_size,
   3140 		CDRETRIES, 30000, NULL, flags);
   3141 	if (error)
   3142 		goto out;
   3143 
   3144 	toc_hdr = (struct scsipi_toc_header *)     buffer;
   3145 	toc     = (struct scsipi_toc_formatted *) (buffer + 4);
   3146 
   3147 	/* as in read disc info, all sessions are converted to tracks      */
   3148 	/* track 1..  -> offsets, sizes can be (roughly) estimated (16 ECC) */
   3149 	/* last track -> we got the size from the lead-out                 */
   3150 
   3151 	tracknr      = 0;
   3152 	last_tracknr = toc_hdr->last;
   3153 	track_start  = 0;
   3154 	track_size   = 0;
   3155 	lead_out     = 0;
   3156 	flags        = 0;
   3157 
   3158 	size = req_size - sizeof(struct scsipi_toc_header) + 1;
   3159 	while (size > 0) {
   3160 		/* remember, DVD-ROM: tracknr == sessionnr */
   3161 		lba     = _4btol(toc->msf_lba);
   3162 		tracknr = toc->tracknr;
   3163 		control = toc->adrcontrol & 0xf;
   3164 
   3165 		if (trackinfo->tracknr == tracknr) {
   3166 			track_start = lba;
   3167 		}
   3168 		if (trackinfo->tracknr == tracknr+1) {
   3169 			track_size  = lba - track_start;
   3170 			track_size -= 16;	/* link block ? */
   3171 		}
   3172 		if (tracknr == 0xAA) {
   3173 			lead_out = lba;
   3174 		}
   3175 
   3176 		if ((control & (3<<2)) == 4)		/* 01xxb */
   3177 			flags |= MMC_TRACKINFO_DATA;
   3178 		if ((control & (1<<2)) == 0) {		/* x0xxb */
   3179 			flags |= MMC_TRACKINFO_AUDIO;
   3180 			if (control & (1<<3))		/* 10xxb */
   3181 				flags |= MMC_TRACKINFO_AUDIO_4CHAN;
   3182 			if (control & 1)		/* xxx1b */
   3183 				flags |= MMC_TRACKINFO_PRE_EMPH;
   3184 		}
   3185 
   3186 		toc++;
   3187 		size -= sizeof(struct scsipi_toc_formatted);
   3188 	}
   3189 	if (trackinfo->tracknr == last_tracknr) {
   3190 		track_size = lead_out - track_start;
   3191 	}
   3192 
   3193 	/* fill in */
   3194 	/* trackinfo->tracknr preserved */
   3195 	trackinfo->sessionnr  = trackinfo->tracknr;
   3196 	trackinfo->track_mode = 0;	/* unknown */
   3197 	trackinfo->data_mode  = 8;	/* 2048 bytes mode1   */
   3198 
   3199 	trackinfo->flags         = flags;
   3200 	trackinfo->track_start   = track_start;
   3201 	trackinfo->next_writable = 0;
   3202 	trackinfo->free_blocks   = 0;
   3203 	trackinfo->packet_size   = 16;	/* standard length 16 blocks ECC */
   3204 	trackinfo->track_size    = track_size;
   3205 	trackinfo->last_recorded = 0;
   3206 
   3207 out:
   3208 	free(buffer, M_TEMP);
   3209 	return error;
   3210 }
   3211 
   3212 static int
   3213 mmc_gettrackinfo(struct scsipi_periph *periph,
   3214 		 struct mmc_trackinfo *trackinfo)
   3215 {
   3216 	struct scsipi_read_trackinfo      ti_cmd;
   3217 	struct scsipi_read_trackinfo_data ti __aligned(2);
   3218 	struct scsipi_get_configuration   gc_cmd;
   3219 	struct scsipi_get_conf_data       gc __aligned(2);
   3220 	int error, flags;
   3221 	int mmc_profile;
   3222 
   3223 	/* set up SCSI call with track number from trackinfo.tracknr */
   3224 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
   3225 	memset(&ti_cmd, 0, sizeof(ti_cmd));
   3226 	ti_cmd.opcode    = READ_TRACKINFO;
   3227 	ti_cmd.addr_type = READ_TRACKINFO_ADDR_TRACK;
   3228 	ti_cmd.data_len[1] = READ_TRACKINFO_RETURNSIZE;
   3229 
   3230 	/* trackinfo.tracknr contains number of tracks to query */
   3231 	_lto4b(trackinfo->tracknr, ti_cmd.address);
   3232 	error = scsipi_command(periph,
   3233 		(void *)&ti_cmd, sizeof(ti_cmd),
   3234 		(void *)&ti,     READ_TRACKINFO_RETURNSIZE,
   3235 		CDRETRIES, 30000, NULL, flags);
   3236 
   3237 	if (error) {
   3238 		/* trackinfo call failed, emulate for cd-rom/dvd-rom */
   3239 		/* first determine mmc profile */
   3240 		flags = XS_CTL_DATA_IN;
   3241 		memset(&gc_cmd, 0, sizeof(gc_cmd));
   3242 		gc_cmd.opcode = GET_CONFIGURATION;
   3243 		_lto2b(GET_CONF_NO_FEATURES_LEN, gc_cmd.data_len);
   3244 
   3245 		error = scsipi_command(periph,
   3246 			(void *)&gc_cmd, sizeof(gc_cmd),
   3247 			(void *)&gc,     GET_CONF_NO_FEATURES_LEN,
   3248 			CDRETRIES, 30000, NULL, flags);
   3249 		if (error)
   3250 			return error;
   3251 		mmc_profile = _2btol(gc.mmc_profile);
   3252 
   3253 		/* choose emulation */
   3254 		if (mmc_profile == 0x08) /* CD-ROM */
   3255 			return mmc_gettrackinfo_cdrom(periph, trackinfo);
   3256 		if (mmc_profile == 0x10) /* DVD-ROM */
   3257 			return mmc_gettrackinfo_dvdrom(periph, trackinfo);
   3258 		/* CD/DVD drive is violating specs */
   3259 		return EIO;
   3260 	}
   3261 
   3262 	/* (re)initialise structure */
   3263 	memset(trackinfo, 0, sizeof(struct mmc_trackinfo));
   3264 
   3265 	/* account for short returns screwing up track and session msb */
   3266 	if ((ti.data_len[1] | (ti.data_len[0] << 8)) <= 32) {
   3267 		ti.track_msb   = 0;
   3268 		ti.session_msb = 0;
   3269 	}
   3270 
   3271 	trackinfo->tracknr    = ti.track_lsb   | (ti.track_msb   << 8);
   3272 	trackinfo->sessionnr  = ti.session_lsb | (ti.session_msb << 8);
   3273 	trackinfo->track_mode = ti.track_info_1 & 0xf;
   3274 	trackinfo->data_mode  = ti.track_info_2 & 0xf;
   3275 
   3276 	flags = 0;
   3277 	if (ti.track_info_1 & 0x10)
   3278 		flags |= MMC_TRACKINFO_COPY;
   3279 	if (ti.track_info_1 & 0x20)
   3280 		flags |= MMC_TRACKINFO_DAMAGED;
   3281 	if (ti.track_info_2 & 0x10)
   3282 		flags |= MMC_TRACKINFO_FIXED_PACKET;
   3283 	if (ti.track_info_2 & 0x20)
   3284 		flags |= MMC_TRACKINFO_INCREMENTAL;
   3285 	if (ti.track_info_2 & 0x40)
   3286 		flags |= MMC_TRACKINFO_BLANK;
   3287 	if (ti.track_info_2 & 0x80)
   3288 		flags |= MMC_TRACKINFO_RESERVED;
   3289 	if (ti.data_valid   & 0x01)
   3290 		flags |= MMC_TRACKINFO_NWA_VALID;
   3291 	if (ti.data_valid   & 0x02)
   3292 		flags |= MMC_TRACKINFO_LRA_VALID;
   3293 	if ((trackinfo->track_mode & (3<<2)) == 4)		/* 01xxb */
   3294 		flags |= MMC_TRACKINFO_DATA;
   3295 	if ((trackinfo->track_mode & (1<<2)) == 0) {		/* x0xxb */
   3296 		flags |= MMC_TRACKINFO_AUDIO;
   3297 		if (trackinfo->track_mode & (1<<3))		/* 10xxb */
   3298 			flags |= MMC_TRACKINFO_AUDIO_4CHAN;
   3299 		if (trackinfo->track_mode & 1)			/* xxx1b */
   3300 			flags |= MMC_TRACKINFO_PRE_EMPH;
   3301 	}
   3302 
   3303 	trackinfo->flags = flags;
   3304 	trackinfo->track_start    = _4btol(ti.track_start);
   3305 	trackinfo->next_writable  = _4btol(ti.next_writable);
   3306 	trackinfo->free_blocks    = _4btol(ti.free_blocks);
   3307 	trackinfo->packet_size    = _4btol(ti.packet_size);
   3308 	trackinfo->track_size     = _4btol(ti.track_size);
   3309 	trackinfo->last_recorded  = _4btol(ti.last_recorded);
   3310 
   3311 	return 0;
   3312 }
   3313 
   3314 static int
   3315 mmc_doclose(struct scsipi_periph *periph, int param, int func) {
   3316 	struct scsipi_close_tracksession close_cmd;
   3317 	int error, flags;
   3318 
   3319 	/* set up SCSI call with track number */
   3320 	flags = XS_CTL_DATA_OUT;
   3321 	memset(&close_cmd, 0, sizeof(close_cmd));
   3322 	close_cmd.opcode    = CLOSE_TRACKSESSION;
   3323 	close_cmd.function  = func;
   3324 	_lto2b(param, close_cmd.tracksessionnr);
   3325 
   3326 	error = scsipi_command(periph,
   3327 		(void *) &close_cmd, sizeof(close_cmd),
   3328 		NULL, 0,
   3329 		CDRETRIES, 120000, NULL, flags);
   3330 
   3331 	return error;
   3332 }
   3333 
   3334 static int
   3335 mmc_do_closetrack(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3336 {
   3337 	int mmc_profile = mmc_op->mmc_profile;
   3338 
   3339 	switch (mmc_profile) {
   3340 	case 0x12 : /* DVD-RAM */
   3341 	case 0x1a : /* DVD+RW  */
   3342 	case 0x2a : /* DVD+RW Dual layer */
   3343 	case 0x42 : /* BD-R Random Recording (RRM) */
   3344 	case 0x43 : /* BD-RE */
   3345 	case 0x52 : /* HD DVD-RW ; DVD-RAM like */
   3346 		return EINVAL;
   3347 	}
   3348 
   3349 	return mmc_doclose(periph, mmc_op->tracknr, 1);
   3350 }
   3351 
   3352 static int
   3353 mmc_do_close_or_finalise(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3354 {
   3355 	uint8_t blob[MS5LEN], *page5;
   3356 	int mmc_profile = mmc_op->mmc_profile;
   3357 	int func, close, flags;
   3358 	int error;
   3359 
   3360 	close = (mmc_op->operation == MMC_OP_CLOSESESSION);
   3361 
   3362 	switch (mmc_profile) {
   3363 	case 0x09 : /* CD-R       */
   3364 	case 0x0a : /* CD-RW      */
   3365 		/* Special case : need to update MS field in mode page 5 */
   3366 		memset(blob, 0, sizeof(blob));
   3367 		page5 = blob+8;
   3368 
   3369 		flags = XS_CTL_DATA_IN;
   3370 		error = scsipi_mode_sense_big(periph, SMS_PF, 5,
   3371 		    (void *)blob, sizeof(blob), flags, CDRETRIES, 20000);
   3372 		if (error)
   3373 			return error;
   3374 
   3375 		/* set multi session field when closing a session only */
   3376 		page5[3] &= 63;
   3377 		if (close)
   3378 			page5[3] |= 3 << 6;
   3379 
   3380 		flags = XS_CTL_DATA_OUT;
   3381 		error = scsipi_mode_select_big(periph, SMS_PF,
   3382 		    (void *)blob, sizeof(blob), flags, CDRETRIES, 20000);
   3383 		if (error)
   3384 			return error;
   3385 		/* and use function 2 */
   3386 		func = 2;
   3387 		break;
   3388 	case 0x11 : /* DVD-R (DL) */
   3389 	case 0x13 : /* DVD-RW restricted overwrite */
   3390 	case 0x14 : /* DVD-RW sequential */
   3391 		func = close ? 2 : 3;
   3392 		break;
   3393 	case 0x1b : /* DVD+R   */
   3394 	case 0x2b : /* DVD+R Dual layer */
   3395 	case 0x51 : /* HD DVD-R   */
   3396 	case 0x41 : /* BD-R Sequential recording (SRM) */
   3397 		func = close ? 2 : 6;
   3398 		break;
   3399 	case 0x12 : /* DVD-RAM */
   3400 	case 0x1a : /* DVD+RW  */
   3401 	case 0x2a : /* DVD+RW Dual layer */
   3402 	case 0x42 : /* BD-R Random Recording (RRM) */
   3403 	case 0x43 : /* BD-RE */
   3404 	case 0x52 : /* HD DVD-RW; DVD-RAM like */
   3405 		return EINVAL;
   3406 	default:
   3407 		printf("MMC close/finalise passed wrong device type! (%d)\n",
   3408 		    mmc_profile);
   3409 		return EINVAL;
   3410 	}
   3411 
   3412 	return mmc_doclose(periph, mmc_op->sessionnr, func);
   3413 }
   3414 
   3415 static int
   3416 mmc_do_reserve_track(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3417 {
   3418 	struct scsipi_reserve_track reserve_cmd;
   3419 	uint32_t extent;
   3420 	int error, flags;
   3421 
   3422 	/* TODO make mmc safeguards? */
   3423 	extent = mmc_op->extent;
   3424 	/* TODO min/max support? */
   3425 
   3426 	/* set up SCSI call with requested space */
   3427 	flags = XS_CTL_DATA_OUT;
   3428 	memset(&reserve_cmd, 0, sizeof(reserve_cmd));
   3429 	reserve_cmd.opcode = RESERVE_TRACK;
   3430 	_lto4b(extent, reserve_cmd.reservation_size);
   3431 
   3432 	error = scsipi_command(periph,
   3433 		(void *) &reserve_cmd, sizeof(reserve_cmd),
   3434 		NULL, 0,
   3435 		CDRETRIES, 30000, NULL, flags);
   3436 
   3437 	return error;
   3438 }
   3439 
   3440 static int
   3441 mmc_do_reserve_track_nwa(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3442 {
   3443 	/* XXX assumes that NWA given is valid */
   3444 	switch (mmc_op->mmc_profile) {
   3445 	case 0x09 : /* CD-R       */
   3446 		/* XXX unknown boundary checks XXX */
   3447 		if (mmc_op->extent <= 152)
   3448 			return EINVAL;
   3449 		/* CD-R takes 152 sectors to close track */
   3450 		mmc_op->extent -= 152;
   3451 		return mmc_do_reserve_track(periph, mmc_op);
   3452 	case 0x11 : /* DVD-R (DL) */
   3453 	case 0x1b : /* DVD+R   */
   3454 	case 0x2b : /* DVD+R Dual layer */
   3455 		if (mmc_op->extent % 16)
   3456 			return EINVAL;
   3457 		/* upto one ECC block of 16 sectors lost */
   3458 		mmc_op->extent -= 16;
   3459 		return mmc_do_reserve_track(periph, mmc_op);
   3460 	case 0x41 : /* BD-R Sequential recording (SRM) */
   3461 	case 0x51 : /* HD DVD-R   */
   3462 		if (mmc_op->extent % 32)
   3463 			return EINVAL;
   3464 		/* one ECC block of 32 sectors lost (AFAIK) */
   3465 		mmc_op->extent -= 32;
   3466 		return mmc_do_reserve_track(periph, mmc_op);
   3467 	}
   3468 
   3469 	/* unknown behaviour or invalid disc type */
   3470 	return EINVAL;
   3471 }
   3472 
   3473 static int
   3474 mmc_do_repair_track(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3475 {
   3476 	struct scsipi_repair_track repair_cmd;
   3477 	int error, flags;
   3478 
   3479 	/* TODO make mmc safeguards? */
   3480 
   3481 	/* set up SCSI call with track number */
   3482 	flags = XS_CTL_DATA_OUT;
   3483 	memset(&repair_cmd, 0, sizeof(repair_cmd));
   3484 	repair_cmd.opcode = REPAIR_TRACK;
   3485 	_lto2b(mmc_op->tracknr, repair_cmd.tracknr);
   3486 
   3487 	error = scsipi_command(periph,
   3488 		(void *) &repair_cmd, sizeof(repair_cmd),
   3489 		NULL, 0,
   3490 		CDRETRIES, 30000, NULL, flags);
   3491 
   3492 	return error;
   3493 }
   3494 
   3495 static int
   3496 mmc_do_op(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3497 {
   3498 	/* guard operation value */
   3499 	if (mmc_op->operation < 1 || mmc_op->operation > MMC_OP_MAX)
   3500 		return EINVAL;
   3501 
   3502 	/* synchronise cache is special since it doesn't rely on mmc_profile */
   3503 	if (mmc_op->operation == MMC_OP_SYNCHRONISECACHE)
   3504 		return cdcachesync(periph, 0);
   3505 
   3506 	/* zero mmc_profile means unknown disc so operations are not defined */
   3507 	if (mmc_op->mmc_profile == 0) {
   3508 #ifdef DEBUG
   3509 		printf("mmc_do_op called with mmc_profile = 0\n");
   3510 #endif
   3511 		return EINVAL;
   3512 	}
   3513 
   3514 	/* do the operations */
   3515 	switch (mmc_op->operation) {
   3516 	case MMC_OP_CLOSETRACK   :
   3517 		return mmc_do_closetrack(periph, mmc_op);
   3518 	case MMC_OP_CLOSESESSION :
   3519 	case MMC_OP_FINALISEDISC :
   3520 		return mmc_do_close_or_finalise(periph, mmc_op);
   3521 	case MMC_OP_RESERVETRACK :
   3522 		return mmc_do_reserve_track(periph, mmc_op);
   3523 	case MMC_OP_RESERVETRACK_NWA :
   3524 		return mmc_do_reserve_track_nwa(periph, mmc_op);
   3525 	case MMC_OP_REPAIRTRACK  :
   3526 		return mmc_do_repair_track(periph, mmc_op);
   3527 	case MMC_OP_UNCLOSELASTSESSION :
   3528 		/* TODO unclose last session support */
   3529 		return EINVAL;
   3530 	default :
   3531 		printf("mmc_do_op: unhandled operation %d\n", mmc_op->operation);
   3532 	}
   3533 
   3534 	return EINVAL;
   3535 }
   3536 
   3537 static int
   3538 mmc_setup_writeparams(struct scsipi_periph *periph,
   3539 		      struct mmc_writeparams *mmc_writeparams)
   3540 {
   3541 	struct mmc_trackinfo trackinfo;
   3542 	uint8_t blob[MS5LEN];
   3543 	uint8_t *page5;
   3544 	int flags, error;
   3545 	int track_mode, data_mode;
   3546 
   3547 	/* setup mode page 5 for CD only */
   3548 	if (mmc_writeparams->mmc_class != MMC_CLASS_CD)
   3549 		return 0;
   3550 
   3551 	memset(blob, 0, sizeof(blob));
   3552 	page5 = blob+8;
   3553 
   3554 	/* read mode page 5 (with header) */
   3555 	flags = XS_CTL_DATA_IN;
   3556 	error = scsipi_mode_sense_big(periph, SMS_PF, 5, (void *)blob,
   3557 	    sizeof(blob), flags, CDRETRIES, 20000);
   3558 	if (error)
   3559 		return error;
   3560 
   3561 	/* set page length for reassurance */
   3562 	page5[1] = P5LEN;	/* page length */
   3563 
   3564 	/* write type packet/incremental */
   3565 	page5[2] &= 0xf0;
   3566 
   3567 	/* set specified mode parameters */
   3568 	track_mode = mmc_writeparams->track_mode;
   3569 	data_mode  = mmc_writeparams->data_mode;
   3570 	if (track_mode <= 0 || track_mode > 15)
   3571 		return EINVAL;
   3572 	if (data_mode < 1 || data_mode > 2)
   3573 		return EINVAL;
   3574 
   3575 	/* if a tracknr is passed, setup according to the track */
   3576 	if (mmc_writeparams->tracknr > 0) {
   3577 		trackinfo.tracknr = mmc_writeparams->tracknr;
   3578 		error = mmc_gettrackinfo(periph, &trackinfo);
   3579 		if (error)
   3580 			return error;
   3581 		if ((trackinfo.flags & MMC_TRACKINFO_BLANK) == 0) {
   3582 			track_mode = trackinfo.track_mode;
   3583 			data_mode  = trackinfo.data_mode;
   3584 		}
   3585 		mmc_writeparams->blockingnr = trackinfo.packet_size;
   3586 	}
   3587 
   3588 	/* copy track mode and data mode from trackinfo */
   3589 	page5[3] &= 16;		/* keep only `Copy' bit */
   3590 	page5[3] |= (3 << 6) | track_mode;
   3591 	page5[4] &= 0xf0;	/* wipe data block type */
   3592 	if (data_mode == 1) {
   3593 		/* select ISO mode 1 (CD only) */
   3594 		page5[4] |= 8;
   3595 		/* select session format normal disc (CD only) */
   3596 		page5[8] = 0;
   3597 	} else {
   3598 		/* select ISO mode 2; XA form 1 (CD only) */
   3599 		page5[4] |= 10;
   3600 		/* select session format CD-ROM XA disc (CD only) */
   3601 		page5[8] = 0x20;
   3602 	}
   3603 	if (mmc_writeparams->mmc_cur & MMC_CAP_SEQUENTIAL) {
   3604 		if (mmc_writeparams->mmc_cur & MMC_CAP_ZEROLINKBLK) {
   3605 			/* set BUFE buffer underrun protection */
   3606 			page5[2] |= 1<<6;
   3607 		}
   3608 		/* allow for multi session */
   3609 		page5[3] |= 3 << 6;
   3610 	} else {
   3611 		/* select fixed packets */
   3612 		page5[3] |= 1<<5;
   3613 		_lto4b(mmc_writeparams->blockingnr, &(page5[10]));
   3614 	}
   3615 
   3616 	/* write out updated mode page 5 (with header) */
   3617 	flags = XS_CTL_DATA_OUT;
   3618 	error = scsipi_mode_select_big(periph, SMS_PF, (void *)blob,
   3619 	    sizeof(blob), flags, CDRETRIES, 20000);
   3620 	if (error)
   3621 		return error;
   3622 
   3623 	return 0;
   3624 }
   3625 
   3626 static void
   3627 cd_set_geometry(struct cd_softc *cd)
   3628 {
   3629 	struct dk_softc *dksc = &cd->sc_dksc;
   3630 	struct disk_geom *dg = &dksc->sc_dkdev.dk_geom;
   3631 
   3632 	memset(dg, 0, sizeof(*dg));
   3633 
   3634 	dg->dg_secperunit = cd->params.disksize;
   3635 	dg->dg_secsize = cd->params.blksize;
   3636 	dg->dg_nsectors = 100;
   3637 	dg->dg_ntracks = 1;
   3638 
   3639 	disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, NULL);
   3640 }
   3641