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      1 /*	$NetBSD: cd.c,v 1.357 2026/07/16 06:19:25 mlelstv Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998, 2001, 2003, 2004, 2005, 2008 The NetBSD Foundation,
      5  * Inc.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Charles M. Hannum.
      9  *
     10  * MMC framework implemented and contributed to the NetBSD Foundation by
     11  * Reinoud Zandijk.
     12  *
     13  * Redistribution and use in source and binary forms, with or without
     14  * modification, are permitted provided that the following conditions
     15  * are met:
     16  * 1. Redistributions of source code must retain the above copyright
     17  *    notice, this list of conditions and the following disclaimer.
     18  * 2. Redistributions in binary form must reproduce the above copyright
     19  *    notice, this list of conditions and the following disclaimer in the
     20  *    documentation and/or other materials provided with the distribution.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     32  * POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 /*
     36  * Originally written by Julian Elischer (julian (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 1.357 2026/07/16 06:19:25 mlelstv Exp $");
     54 
     55 #include <sys/param.h>
     56 #include <sys/systm.h>
     57 #include <sys/kernel.h>
     58 #include <sys/file.h>
     59 #include <sys/stat.h>
     60 #include <sys/ioctl.h>
     61 #include <sys/buf.h>
     62 #include <sys/bufq.h>
     63 #include <sys/uio.h>
     64 #include <sys/malloc.h>
     65 #include <sys/errno.h>
     66 #include <sys/device.h>
     67 #include <sys/disklabel.h>
     68 #include <sys/disk.h>
     69 #include <sys/cdio.h>
     70 #include <sys/dvdio.h>
     71 #include <sys/scsiio.h>
     72 #include <sys/proc.h>
     73 #include <sys/conf.h>
     74 #include <sys/vnode.h>
     75 #include <sys/rndsource.h>
     76 
     77 #include <dev/scsipi/scsi_spc.h>
     78 #include <dev/scsipi/scsipi_all.h>
     79 #include <dev/scsipi/scsipi_cd.h>
     80 #include <dev/scsipi/scsipi_disk.h>	/* rw_big and start_stop come */
     81 #include <dev/scsipi/scsi_all.h>
     82 					/* from there */
     83 #include <dev/scsipi/scsi_disk.h>	/* rw comes from there */
     84 #include <dev/scsipi/scsipiconf.h>
     85 #include <dev/scsipi/scsipi_base.h>
     86 #include <dev/scsipi/cdvar.h>
     87 
     88 #include <prop/proplib.h>
     89 
     90 #define	CDUNIT(z)			DISKUNIT(z)
     91 #define	CDPART(z)			DISKPART(z)
     92 #define	CDMINOR(unit, part)		DISKMINOR(unit, part)
     93 #define	MAKECDDEV(maj, unit, part)	MAKEDISKDEV(maj, unit, part)
     94 
     95 #define MAXTRACK	99
     96 #define CD_BLOCK_OFFSET	150
     97 #define CD_FRAMES	75
     98 #define CD_SECS		60
     99 
    100 #define CD_TOC_FORM	0	/* formatted TOC, exposed to userland     */
    101 #define CD_TOC_MSINFO	1	/* multi-session info			  */
    102 #define CD_TOC_RAW	2	/* raw TOC as on disc, unprocessed	  */
    103 #define CD_TOC_PMA	3	/* PMA, used as intermediate (rare use)   */
    104 #define CD_TOC_ATIP	4	/* pressed space of recordable		  */
    105 #define CD_TOC_CDTEXT	5	/* special CD-TEXT, rarely used		  */
    106 
    107 #define P5LEN	0x32
    108 #define MS5LEN	(P5LEN + 8 + 2)
    109 
    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 		if (periph->periph_version >= 2)
    288 			periph->periph_quirks |= PQUIRK_ONLYBIG;
    289 		break;
    290 	case SCSIPI_BUSTYPE_ATAPI:
    291 		dtype = DKTYPE_ATAPI;
    292 		break;
    293 	default:
    294 		dtype = DKTYPE_UNKNOWN;
    295 		break;
    296 	}
    297 
    298 	/*
    299 	 * Initialize and attach the disk structure.
    300 	 */
    301 	dk_init(dksc, self, dtype);
    302 	disk_init(&dksc->sc_dkdev, dksc->sc_xname, &cddkdriver);
    303 
    304 	dk_attach(dksc);
    305 	disk_attach(&dksc->sc_dkdev);
    306 
    307 	bufq_alloc(&dksc->sc_bufq, "disksort", BUFQ_SORT_RAWBLOCK);
    308 
    309 	callout_init(&cd->sc_callout, 0);
    310 
    311 	/*
    312 	 * Store information needed to contact our base driver
    313 	 */
    314 	cd->sc_periph = periph;
    315 
    316 	periph->periph_dev = dksc->sc_dev;
    317 	periph->periph_switch = &cd_switch;
    318 
    319 	/*
    320 	 * Increase our openings to the maximum-per-periph
    321 	 * supported by the adapter.  This will either be
    322 	 * clamped down or grown by the adapter if necessary.
    323 	 */
    324 	periph->periph_openings =
    325 	    SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel);
    326 	periph->periph_flags |= PERIPH_GROW_OPENINGS;
    327 
    328 	aprint_naive("\n");
    329 	aprint_normal("\n");
    330 
    331 	if (!pmf_device_register(self, NULL, NULL))
    332 		aprint_error_dev(self, "couldn't establish power handler\n");
    333 }
    334 
    335 static int
    336 cddetach(device_t self, int flags)
    337 {
    338 	struct cd_softc *cd = device_private(self);
    339 	struct dk_softc *dksc = &cd->sc_dksc;
    340 	struct scsipi_periph *periph = cd->sc_periph;
    341 	struct scsipi_channel *chan = periph->periph_channel;
    342 	int bmaj, cmaj, i, mn, rc;
    343 
    344 	if ((rc = disk_begindetach(&dksc->sc_dkdev, cd_lastclose, self, flags)) != 0)
    345 		return rc;
    346 
    347 	/* locate the major number */
    348 	bmaj = bdevsw_lookup_major(&cd_bdevsw);
    349 	cmaj = cdevsw_lookup_major(&cd_cdevsw);
    350 
    351 	/* Nuke the vnodes for any open instances */
    352 	for (i = 0; i < MAXPARTITIONS; i++) {
    353 		mn = CDMINOR(device_unit(self), i);
    354 		vdevgone(bmaj, mn, mn, VBLK);
    355 		vdevgone(cmaj, mn, mn, VCHR);
    356 	}
    357 
    358 	/* kill any pending restart */
    359 	callout_halt(&cd->sc_callout, NULL);
    360 
    361 	dk_drain(dksc);
    362 
    363 	/* Kill off any pending commands. */
    364 	mutex_enter(chan_mtx(chan));
    365 	scsipi_kill_pending(cd->sc_periph);
    366 	mutex_exit(chan_mtx(chan));
    367 
    368 	bufq_free(dksc->sc_bufq);
    369 
    370 	/* Detach from the disk list. */
    371 	disk_detach(&dksc->sc_dkdev);
    372 	disk_destroy(&dksc->sc_dkdev);
    373 
    374 	dk_detach(dksc);
    375 
    376 	callout_destroy(&cd->sc_callout);
    377 
    378 	pmf_device_deregister(self);
    379 
    380 	return (0);
    381 }
    382 
    383 /*
    384  * Serialized by caller
    385  */
    386 static int
    387 cd_firstopen(device_t self, dev_t dev, int flag, int fmt)
    388 {
    389         struct cd_softc *cd = device_private(self);
    390         struct scsipi_periph *periph = cd->sc_periph;
    391         struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter;
    392         int error, silent;
    393         int part;
    394 
    395 	part = CDPART(dev);
    396 
    397         error = scsipi_adapter_addref(adapt);
    398         if (error)
    399                 return error;
    400 
    401         if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT))
    402                 silent = XS_CTL_SILENT;
    403         else
    404                 silent = 0;
    405 
    406 	/* make cdclose() silent */
    407 	cd->flags |= CDF_EJECTED;
    408 
    409 	/* Check that it is still responding and ok. */
    410 	error = scsipi_test_unit_ready(periph,
    411 	    XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE |
    412 	    XS_CTL_SILENT);
    413 
    414 	/*
    415 	 * Start the pack spinning if necessary. Always allow the
    416 	 * raw partition to be opened, for raw IOCTLs. Data transfers
    417 	 * will check for SDEV_MEDIA_LOADED.
    418 	 */
    419 	if (error == EIO) {
    420 		error = scsipi_start(periph, SSS_START, silent);
    421 		if (error == EINVAL)
    422 			error = EIO;
    423 	}
    424 	if (error) {
    425 		if (part == RAW_PART)
    426 			goto out;
    427 		goto bad;
    428 	}
    429 
    430 	/* Lock the pack in. */
    431 	error = scsipi_prevent(periph, SPAMR_PREVENT_DT,
    432 	    XS_CTL_IGNORE_ILLEGAL_REQUEST |
    433 	    XS_CTL_IGNORE_MEDIA_CHANGE);
    434 	SC_DEBUG(periph, SCSIPI_DB1,
    435 	    ("cdopen: scsipi_prevent, error=%d\n", error));
    436 	if (error) {
    437 		if (part == RAW_PART)
    438 			goto out;
    439 		goto bad;
    440 	}
    441 
    442 	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
    443 		int param_error;
    444 
    445 		/* Load the physical device parameters. */
    446 		param_error = cd_get_parms(cd, 0);
    447 		if (param_error == CDGP_RESULT_OFFLINE) {
    448 			error = ENXIO;
    449 			goto bad2;
    450 		}
    451 		periph->periph_flags |= PERIPH_MEDIA_LOADED;
    452 
    453 		SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded "));
    454 
    455 		cd_set_geometry(cd);
    456 
    457 		/* make cdclose() loud again */
    458 		cd->flags &= ~CDF_EJECTED;
    459 	}
    460 
    461 	periph->periph_flags |= PERIPH_OPEN;
    462 
    463 out:
    464 	return 0;
    465 
    466 bad2:
    467 	scsipi_prevent(periph, SPAMR_ALLOW,
    468 	    XS_CTL_IGNORE_ILLEGAL_REQUEST |
    469 	    XS_CTL_IGNORE_MEDIA_CHANGE |
    470 	    XS_CTL_SILENT);
    471 
    472 bad:
    473 	scsipi_adapter_delref(adapt);
    474 	return error;
    475 }
    476 
    477 /*
    478  * open the device. Make sure the partition info is a up-to-date as can be.
    479  */
    480 static int
    481 cdopen(dev_t dev, int flag, int fmt, struct lwp *l)
    482 {
    483 	struct cd_softc *cd;
    484 	struct dk_softc *dksc;
    485 	struct scsipi_periph *periph;
    486 	int unit, part;
    487 	int error;
    488 
    489 	unit = CDUNIT(dev);
    490 	cd = device_lookup_private(&cd_cd, unit);
    491 	if (cd == NULL)
    492 		return (ENXIO);
    493 	dksc = &cd->sc_dksc;
    494 
    495 	periph = cd->sc_periph;
    496 	part = CDPART(dev);
    497 
    498 	SC_DEBUG(periph, SCSIPI_DB1,
    499 	    ("cdopen: dev=0x%"PRIu64" (unit %"PRIu32" (of %d), partition %d)\n",
    500 	    dev, unit, cd_cd.cd_ndevs, CDPART(dev)));
    501 
    502 	/*
    503 	 * If any partition is open, but the disk has been invalidated,
    504 	 * disallow further opens of non-raw partition
    505 	 */
    506 	if ((periph->periph_flags & (PERIPH_OPEN | PERIPH_MEDIA_LOADED)) ==
    507 	    PERIPH_OPEN) {
    508 		if (part != RAW_PART || fmt != S_IFCHR)
    509 			return EIO;
    510 	}
    511 
    512 	error = dk_open(dksc, dev, flag, fmt, l);
    513 
    514 	SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n"));
    515 
    516 	return error;
    517 }
    518 
    519 /*
    520  * Serialized by caller
    521  */
    522 static int
    523 cd_lastclose(device_t self)
    524 {
    525 	struct cd_softc *cd = device_private(self);
    526 	struct scsipi_periph *periph = cd->sc_periph;
    527 	struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter;
    528 	int silent;
    529 
    530 	if ((cd->flags & CDF_EJECTED) != 0 ||
    531 	    (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)
    532 		silent = XS_CTL_SILENT;
    533 	else
    534 		silent = 0;
    535 
    536 	cdcachesync(periph, silent);
    537 
    538 	scsipi_wait_drain(periph);
    539 
    540 	scsipi_prevent(periph, SPAMR_ALLOW,
    541 	    XS_CTL_IGNORE_ILLEGAL_REQUEST |
    542 	    XS_CTL_IGNORE_NOT_READY |
    543 	    XS_CTL_SILENT);
    544 	periph->periph_flags &= ~PERIPH_OPEN;
    545 
    546 	scsipi_wait_drain(periph);
    547 
    548 	scsipi_adapter_delref(adapt);
    549 
    550 	return 0;
    551 }
    552 
    553 /*
    554  * close the device.. only called if we are the LAST
    555  * occurrence of an open device
    556  */
    557 static int
    558 cdclose(dev_t dev, int flag, int fmt, struct lwp *l)
    559 {
    560 	struct cd_softc *cd;
    561 	struct dk_softc *dksc;
    562 	int unit;
    563 
    564 	unit = CDUNIT(dev);
    565 	cd = device_lookup_private(&cd_cd, unit);
    566 	dksc = &cd->sc_dksc;
    567 
    568 	return dk_close(dksc, dev, flag, fmt, l);
    569 }
    570 
    571 static void
    572 cd_bounce_buffer_done(struct buf *bp)
    573 {
    574 	struct cdbounce *bounce = bp->b_private;
    575 	struct buf *obp = bounce->obp;
    576 
    577 	if (bp == bounce->lbp) {
    578 		if ((bounce->lerr = bp->b_error) == 0)
    579 			memcpy(obp->b_data, (char *)bp->b_data + bounce->head, bounce->lcount);
    580 		bounce->lbp = NULL;
    581 	}
    582 
    583 	if (bp == bounce->rbp) {
    584 		if ((bounce->rerr = bp->b_error) == 0)
    585 			memcpy((char *)obp->b_data + bounce->lcount, bp->b_data, bounce->rcount);
    586 		bounce->rbp = NULL;
    587 	}
    588 
    589 	free(bp->b_data, M_DEVBUF);
    590 	putiobuf(bp);
    591 
    592 	if (bounce->lbp != NULL || bounce->rbp != NULL)
    593 		return;
    594 
    595 	obp->b_error = bounce->rerr;
    596 	if (bounce->lerr)
    597 		obp->b_error = bounce->lerr;
    598 
    599 	obp->b_resid = 0;
    600 	if (obp->b_error)
    601 		obp->b_resid = obp->b_bcount;
    602 
    603 	free(bounce, M_DEVBUF);
    604 	biodone(obp);
    605 }
    606 
    607 static int
    608 cd_make_bounce_buffer(struct cd_softc *cd, struct buf *bp, daddr_t blkno, int count, struct buf **nbpp, void *priv)
    609 {
    610 	struct buf *nbp;
    611 
    612 	/* We don't support bouncing writes */
    613 	if ((bp->b_flags & B_READ) == 0)
    614 		return EACCES; /* XXX */
    615 
    616 	nbp = getiobuf(NULL, false);
    617 	if (nbp == NULL)
    618 		return ENOMEM;
    619 
    620 	nbp->b_data = malloc(count, M_DEVBUF, M_NOWAIT);
    621 	if (nbp->b_data == NULL) {
    622 		putiobuf(nbp);
    623 		return ENOMEM;
    624 	}
    625 
    626 	/* Set up the IOP to the bounce buffer */
    627 	nbp->b_error = 0;
    628 	nbp->b_dev = bp->b_dev;
    629 	nbp->b_proc = bp->b_proc;
    630 	nbp->b_bcount = count;
    631 	nbp->b_bufsize = count;
    632 	nbp->b_blkno = blkno;
    633 	nbp->b_flags = bp->b_flags | B_READ;
    634 	nbp->b_oflags = bp->b_oflags;
    635 	nbp->b_cflags = bp->b_cflags;
    636 	nbp->b_iodone = cd_bounce_buffer_done;
    637 	nbp->b_private = priv;
    638 
    639 	BIO_COPYPRIO(nbp, bp);
    640 
    641 	*nbpp = nbp;
    642 	return 0;
    643 }
    644 
    645 static int
    646 cd_make_bounce(struct cd_softc *cd, struct buf *bp, struct cdbounce **bouncep)
    647 {
    648 	struct dk_softc *dksc = &cd->sc_dksc;
    649 	unsigned secsize = dksc->sc_dkdev.dk_geom.dg_secsize;
    650 	struct cdbounce *bounce;
    651 	int bps, nblks, skip, total, count;
    652 	daddr_t blkno;
    653 	struct buf *lbp, *rbp;
    654 	int error;
    655 
    656 	bounce = malloc(sizeof(struct cdbounce), M_DEVBUF, M_NOWAIT|M_ZERO);
    657 	if (bounce == NULL)
    658 		return ENOMEM;
    659 
    660 	bps = howmany(secsize, DEV_BSIZE);
    661 	nblks = howmany(bp->b_bcount, DEV_BSIZE);
    662 
    663 	skip = bp->b_blkno % bps;
    664 
    665 	blkno = bp->b_blkno - skip;
    666 	total = roundup(nblks + skip, bps) * DEV_BSIZE;
    667 
    668 	count = total;
    669 	cd_iosize(dksc->sc_dev, &count);
    670 
    671 	bounce->head = skip * DEV_BSIZE;
    672 	bounce->lcount = imin(count - bounce->head, bp->b_bcount);
    673 	bounce->rcount = bp->b_bcount - bounce->lcount;
    674 
    675 	error = cd_make_bounce_buffer(cd, bp, blkno, count, &lbp, bounce);
    676 	if (error)
    677 		goto bad;
    678 
    679 	blkno += howmany(count, DEV_BSIZE);
    680 	count = total - count;
    681 
    682 	if (count > 0) {
    683 		error = cd_make_bounce_buffer(cd, bp, blkno, count, &rbp, bounce);
    684 		if (error) {
    685 			free(lbp->b_data, M_DEVBUF);
    686 			putiobuf(lbp);
    687 			goto bad;
    688 		}
    689 	} else
    690 		rbp = NULL;
    691 
    692 	bounce->obp = bp;
    693 	bounce->lbp = lbp;
    694 	bounce->rbp = rbp;
    695 
    696 	*bouncep = bounce;
    697 
    698 	return 0;
    699 
    700 bad:
    701 	free(bounce, M_DEVBUF);
    702 	return error;
    703 }
    704 
    705 /*
    706  * Actually translate the requested transfer into one the physical driver can
    707  * understand.  The transfer is described by a buf and will include only one
    708  * physical transfer.
    709  */
    710 static void
    711 cdstrategy(struct buf *bp)
    712 {
    713 	struct cd_softc *cd = device_lookup_private(&cd_cd,CDUNIT(bp->b_dev));
    714 	struct dk_softc *dksc = &cd->sc_dksc;
    715 	struct scsipi_periph *periph = cd->sc_periph;
    716 	int error;
    717 
    718 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cdstrategy "));
    719 	SC_DEBUG(cd->sc_periph, SCSIPI_DB1,
    720 	    ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno));
    721 
    722 	/*
    723 	 * If the device has been made invalid, error out
    724 	 * maybe the media changed
    725 	 */
    726 	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
    727 		if (periph->periph_flags & PERIPH_OPEN)
    728 			error = EIO;
    729 		else
    730 			error = ENODEV;
    731 		goto bad;
    732 	}
    733 
    734 	/*
    735 	 * If label and device don't agree in sector size use a bounce buffer
    736 	 */
    737 	if (dksc->sc_dkdev.dk_label->d_secsize != dksc->sc_dkdev.dk_geom.dg_secsize) {
    738 		struct cdbounce *bounce = NULL;
    739 
    740 		error = cd_make_bounce(cd, bp, &bounce);
    741 		if (error)
    742 			goto bad;
    743 
    744 		dk_strategy(dksc, bounce->lbp);
    745 		if (bounce->rbp != NULL)
    746 			dk_strategy(dksc, bounce->rbp);
    747 
    748 		return;
    749 	}
    750 
    751 	dk_strategy(dksc, bp);
    752 	return;
    753 
    754 bad:
    755 	bp->b_error = error;
    756 	bp->b_resid = bp->b_bcount;
    757 	biodone(bp);
    758 }
    759 
    760 /*
    761  * Issue single I/O command
    762  *
    763  * Called from dk_start and implicitly from dk_strategy
    764  */
    765 static int
    766 cd_diskstart(device_t dev, struct buf *bp)
    767 {
    768 	struct cd_softc *cd = device_private(dev);
    769         struct scsipi_periph *periph = cd->sc_periph;
    770         struct scsipi_channel *chan = periph->periph_channel;
    771 	struct scsipi_rw_10 cmd_big;
    772 	struct scsi_rw_6 cmd_small;
    773 	struct scsipi_generic *cmdp;
    774 	struct scsipi_xfer *xs;
    775 	int error, flags, nblks, cmdlen;
    776 
    777 	SC_DEBUG(periph, SCSIPI_DB2, ("cdstart "));
    778 
    779 	mutex_enter(chan_mtx(chan));
    780 
    781 	if (periph->periph_active >= periph->periph_openings) {
    782 		error = EAGAIN;
    783 		goto out;
    784 	}
    785 
    786 	/*
    787 	 * there is excess capacity, but a special waits
    788 	 * It'll need the adapter as soon as we clear out of the
    789 	 * way and let it run (user level wait).
    790 	 */
    791 	if (periph->periph_flags & PERIPH_WAITING) {
    792 		periph->periph_flags &= ~PERIPH_WAITING;
    793 		cv_broadcast(periph_cv_periph(periph));
    794 		error = EAGAIN;
    795 		goto out;
    796 	}
    797 
    798 	/*
    799 	 * If the device has become invalid, abort all the
    800 	 * reads and writes until all files have been closed and
    801 	 * re-opened
    802 	 */
    803 	if (__predict_false(
    804 	    (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) {
    805 		error = EIO;
    806 		goto out;
    807 	}
    808 
    809 	nblks = howmany(bp->b_bcount, cd->params.blksize);
    810 
    811 	/*
    812 	 *  Fill out the scsi command.  If the transfer will
    813 	 *  fit in a "small" cdb, use it.
    814 	 */
    815 	if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) &&
    816 	    ((nblks & 0xff) == nblks) &&
    817 	    !(periph->periph_quirks & PQUIRK_ONLYBIG)) {
    818 		/*
    819 		 * We can fit in a small cdb.
    820 		 */
    821 		memset(&cmd_small, 0, sizeof(cmd_small));
    822 		cmd_small.opcode = (bp->b_flags & B_READ) ?
    823 		    SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND;
    824 		_lto3b(bp->b_rawblkno, cmd_small.addr);
    825 		cmd_small.length = nblks & 0xff;
    826 		cmdlen = sizeof(cmd_small);
    827 		cmdp = (struct scsipi_generic *)&cmd_small;
    828 	} else {
    829 		/*
    830 		 * Need a large cdb.
    831 		 */
    832 		memset(&cmd_big, 0, sizeof(cmd_big));
    833 		cmd_big.opcode = (bp->b_flags & B_READ) ?
    834 		    READ_10 : WRITE_10;
    835 		_lto4b(bp->b_rawblkno, cmd_big.addr);
    836 		_lto2b(nblks, cmd_big.length);
    837 		cmdlen = sizeof(cmd_big);
    838 		cmdp = (struct scsipi_generic *)&cmd_big;
    839 	}
    840 
    841 	/*
    842 	 * Figure out what flags to use.
    843 	 */
    844 	flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG;
    845 	if (bp->b_flags & B_READ)
    846 		flags |= XS_CTL_DATA_IN;
    847 	else
    848 		flags |= XS_CTL_DATA_OUT;
    849 
    850 	/*
    851 	 * Call the routine that chats with the adapter.
    852 	 * Note: we cannot sleep as we may be an interrupt
    853 	 */
    854 	xs = scsipi_make_xs_locked(periph, cmdp, cmdlen,
    855 	    (u_char *)bp->b_data, bp->b_bcount,
    856 	    CDRETRIES, 30000, bp, flags);
    857 	if (__predict_false(xs == NULL)) {
    858 		/*
    859 		 * out of memory. Keep this buffer in the queue, and
    860 		 * retry later.
    861 		 */
    862 		callout_reset(&cd->sc_callout, hz / 2, cdrestart, cd);
    863 		error = EAGAIN;
    864 		goto out;
    865 	}
    866 
    867 	error = scsipi_execute_xs(xs);
    868 	/* with a scsipi_xfer preallocated, scsipi_command can't fail */
    869 	KASSERT(error == 0);
    870 
    871 out:
    872 	mutex_exit(chan_mtx(chan));
    873 
    874 	return error;
    875 }
    876 
    877 /*
    878  * Recover I/O request after memory shortage
    879  *
    880  * Called from callout
    881  */
    882 static void
    883 cdrestart(void *v)
    884 {
    885 	struct cd_softc *cd = v;
    886 	struct dk_softc *dksc = &cd->sc_dksc;
    887 
    888 	dk_start(dksc, NULL);
    889 }
    890 
    891 /*
    892  * Recover I/O request after memory shortage
    893  *
    894  * Called from scsipi midlayer when resources have been freed
    895  * with channel lock held
    896  */
    897 static void
    898 cdstart(struct scsipi_periph *periph)
    899 {
    900 	struct cd_softc *cd = device_private(periph->periph_dev);
    901 	struct dk_softc *dksc = &cd->sc_dksc;
    902 	struct scsipi_channel *chan = periph->periph_channel;
    903 
    904 	/*
    905 	 * release channel lock as dk_start may need to acquire
    906 	 * other locks
    907 	 *
    908 	 * cdstart is called from scsipi_put_xs and all its callers
    909 	 * release the lock afterwards. So releasing it here
    910 	 * doesn't matter.
    911 	 */
    912 	mutex_exit(chan_mtx(chan));
    913 
    914 	dk_start(dksc, NULL);
    915 
    916 	mutex_enter(chan_mtx(chan));
    917 }
    918 
    919 static void
    920 cddone(struct scsipi_xfer *xs, int error)
    921 {
    922 	struct cd_softc *cd = device_private(xs->xs_periph->periph_dev);
    923 	struct dk_softc *dksc = &cd->sc_dksc;
    924 	struct buf *bp = xs->bp;
    925 
    926 	if (bp) {
    927 		bp->b_error = error;
    928 		bp->b_resid = xs->resid;
    929 		if (error) {
    930 			/* on a read/write error bp->b_resid is zero, so fix */
    931 			bp->b_resid = bp->b_bcount;
    932 		}
    933 
    934 		dk_done(dksc, bp);
    935 		/* dk_start is called from scsipi_complete */
    936 	}
    937 }
    938 
    939 static int
    940 cd_interpret_sense(struct scsipi_xfer *xs)
    941 {
    942 	struct scsipi_periph *periph = xs->xs_periph;
    943 	struct scsi_sense_data *sense = &xs->sense.scsi_sense;
    944 	int retval = EJUSTRETURN;
    945 
    946 	/*
    947 	 * If it isn't an extended or extended/deferred error, let
    948 	 * the generic code handle it.
    949 	 */
    950 	if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT &&
    951 	    SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED)
    952 		return (retval);
    953 
    954 	/*
    955 	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Logical Unit
    956 	 * Is In The Process of Becoming Ready" (Sense code 0x04,0x01), then
    957 	 * wait a bit for the drive to spin up
    958 	 */
    959 
    960 	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
    961 	    (sense->asc == 0x04) && (sense->ascq == 0x01)) {
    962 		/*
    963 		 * Sleep for 5 seconds to wait for the drive to spin up
    964 		 */
    965 
    966 		SC_DEBUG(periph, SCSIPI_DB1, ("Waiting 5 sec for CD "
    967 						"spinup\n"));
    968 		if (!callout_pending(&periph->periph_callout))
    969 			scsipi_periph_freeze(periph, 1);
    970 		callout_reset(&periph->periph_callout,
    971 		    5 * hz, scsipi_periph_timed_thaw, periph);
    972 		retval = ERESTART;
    973 	}
    974 
    975 	/*
    976 	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Logical Unit Not
    977 	 * Ready, Operation In Progress" (Sense code 0x04, 0x07),
    978 	 * then wait for the specified time
    979 	 */
    980 
    981 	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
    982 	    (sense->asc == 0x04) && (sense->ascq == 0x07)) {
    983 		/*
    984 		 * we could listen to the delay; but it looks like the skey
    985 		 * data is not always returned.
    986 		 */
    987 		/* cd_delay = _2btol(sense->sks.sks_bytes); */
    988 
    989 		/* wait for a half second and get going again */
    990 		if (!callout_pending(&periph->periph_callout))
    991 			scsipi_periph_freeze(periph, 1);
    992 		callout_reset(&periph->periph_callout,
    993 		    hz/2, scsipi_periph_timed_thaw, periph);
    994 		retval = ERESTART;
    995 	}
    996 
    997 	/*
    998 	 * If we got a "Unit not ready" (SKEY_NOT_READY) and "Long write in
    999 	 * progress" (Sense code 0x04, 0x08), then wait for the specified
   1000 	 * time
   1001 	 */
   1002 
   1003 	if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
   1004 	    (sense->asc == 0x04) && (sense->ascq == 0x08)) {
   1005 		/*
   1006 		 * long write in process; we could listen to the delay; but it
   1007 		 * looks like the skey data is not always returned.
   1008 		 */
   1009 		/* cd_delay = _2btol(sense->sks.sks_bytes); */
   1010 
   1011 		/* wait for a half second and get going again */
   1012 		if (!callout_pending(&periph->periph_callout))
   1013 			scsipi_periph_freeze(periph, 1);
   1014 		callout_reset(&periph->periph_callout,
   1015 		    hz/2, scsipi_periph_timed_thaw, periph);
   1016 		retval = ERESTART;
   1017 	}
   1018 
   1019 	return (retval);
   1020 }
   1021 
   1022 static void
   1023 cdminphys(struct buf *bp)
   1024 {
   1025 	struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(bp->b_dev));
   1026 	struct dk_softc *dksc = &cd->sc_dksc;
   1027 	long xmax;
   1028 
   1029 	/*
   1030 	 * If the device is ancient, we want to make sure that
   1031 	 * the transfer fits into a 6-byte cdb.
   1032 	 *
   1033 	 * XXX Note that the SCSI-I spec says that 256-block transfers
   1034 	 * are allowed in a 6-byte read/write, and are specified
   1035 	 * by setting the "length" to 0.  However, we're conservative
   1036 	 * here, allowing only 255-block transfers in case an
   1037 	 * ancient device gets confused by length == 0.  A length of 0
   1038 	 * in a 10-byte read/write actually means 0 blocks.
   1039 	 */
   1040 	if (cd->flags & CDF_ANCIENT) {
   1041 		xmax = dksc->sc_dkdev.dk_geom.dg_secsize * 0xff;
   1042 
   1043 		if (bp->b_bcount > xmax)
   1044 			bp->b_bcount = xmax;
   1045 	}
   1046 
   1047 	scsipi_adapter_minphys(cd->sc_periph->periph_channel, bp);
   1048 }
   1049 
   1050 static void
   1051 cd_iosize(device_t dev, int *count)
   1052 {
   1053 	struct buf B;
   1054 	int bmaj;
   1055 
   1056 	bmaj       = bdevsw_lookup_major(&cd_bdevsw);
   1057 	B.b_dev    = MAKECDDEV(bmaj,device_unit(dev),RAW_PART);
   1058 	B.b_bcount = *count;
   1059 
   1060 	cdminphys(&B);
   1061 
   1062 	*count = B.b_bcount;
   1063 }
   1064 
   1065 static int
   1066 cdread(dev_t dev, struct uio *uio, int ioflag)
   1067 {
   1068 	return (physio(cdstrategy, NULL, dev, B_READ, cdminphys, uio));
   1069 }
   1070 
   1071 static int
   1072 cdwrite(dev_t dev, struct uio *uio, int ioflag)
   1073 {
   1074 	return (physio(cdstrategy, NULL, dev, B_WRITE, cdminphys, uio));
   1075 }
   1076 
   1077 #if 0	/* XXX Not used */
   1078 /*
   1079  * conversion between minute-seconde-frame and logical block address
   1080  * addresses format
   1081  */
   1082 static void
   1083 lba2msf(u_long lba, u_char *m, u_char *s, u_char *f)
   1084 {
   1085 	u_long tmp;
   1086 
   1087 	tmp = lba + CD_BLOCK_OFFSET;	/* offset of first logical frame */
   1088 	tmp &= 0xffffff;		/* negative lbas use only 24 bits */
   1089 	*m = tmp / (CD_SECS * CD_FRAMES);
   1090 	tmp %= (CD_SECS * CD_FRAMES);
   1091 	*s = tmp / CD_FRAMES;
   1092 	*f = tmp % CD_FRAMES;
   1093 }
   1094 #endif /* XXX Not used */
   1095 
   1096 /*
   1097  * Convert an hour:minute:second:frame address to a logical block address. In
   1098  * theory the number of secs/minute and number of frames/second could be
   1099  * configured differently in the device  as could the block offset but in
   1100  * practice these values are rock solid and most drives don't even allow
   1101  * theses values to be changed.
   1102  */
   1103 static uint32_t
   1104 hmsf2lba(uint8_t h, uint8_t m, uint8_t s, uint8_t f)
   1105 {
   1106 	return (((((uint32_t) h * 60 + m) * CD_SECS) + s) * CD_FRAMES + f)
   1107 		- CD_BLOCK_OFFSET;
   1108 }
   1109 
   1110 static int
   1111 cdreadmsaddr(struct cd_softc *cd, struct cd_formatted_toc *toc, int *addr)
   1112 {
   1113 	struct scsipi_periph *periph = cd->sc_periph;
   1114 	int error;
   1115 	struct cd_toc_entry *cte;
   1116 
   1117 	error = cd_read_toc(cd, CD_TOC_FORM, 0, 0, toc,
   1118 	    sizeof(struct ioc_toc_header) + sizeof(struct cd_toc_entry),
   1119 	    0, 0x40 /* control word for "get MS info" */);
   1120 
   1121 	if (error)
   1122 		return (error);
   1123 
   1124 	cte = &toc->entries[0];
   1125 	if (periph->periph_quirks & PQUIRK_LITTLETOC) {
   1126 		cte->addr.lba = le32toh(cte->addr.lba);
   1127 		toc->header.len = le16toh(toc->header.len);
   1128 	} else {
   1129 		cte->addr.lba = be32toh(cte->addr.lba);
   1130 		toc->header.len = be16toh(toc->header.len);
   1131 	}
   1132 
   1133 	*addr = (toc->header.len >= 10 && cte->track > 1) ?
   1134 		cte->addr.lba : 0;
   1135 	return 0;
   1136 }
   1137 
   1138 /* synchronise caches code from cd.c, move to scsipi_ioctl.c ? */
   1139 static int
   1140 cdcachesync(struct scsipi_periph *periph, int flags) {
   1141 	struct scsi_synchronize_cache_10 cmd;
   1142 
   1143 	/*
   1144 	 * Issue a SYNCHRONIZE CACHE. MMC devices have to issue with address 0
   1145 	 * and length 0 as it can't synchronise parts of the disc per spec.
   1146 	 * We ignore ILLEGAL REQUEST in the event that the command is not
   1147 	 * supported by the device, and poll for completion so that we know
   1148 	 * that the cache has actually been flushed.
   1149 	 *
   1150 	 * XXX should we handle the PQUIRK_NOSYNCCACHE ?
   1151 	 */
   1152 
   1153 	memset(&cmd, 0, sizeof(cmd));
   1154 	cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10;
   1155 
   1156 	return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0,
   1157 	    CDRETRIES, 30000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST));
   1158 }
   1159 
   1160 static int
   1161 do_cdioreadentries(struct cd_softc *cd, struct ioc_read_toc_entry *te,
   1162     struct cd_formatted_toc *toc)
   1163 {
   1164 	/* READ TOC format 0 command, entries */
   1165 	struct ioc_toc_header *th;
   1166 	struct cd_toc_entry *cte;
   1167 	u_int len = te->data_len;
   1168 	int ntracks;
   1169 	int error;
   1170 
   1171 	th = &toc->header;
   1172 
   1173 	if (len > sizeof(toc->entries) ||
   1174 	    len < sizeof(toc->entries[0]))
   1175 		return (EINVAL);
   1176 	error = cd_read_toc(cd, CD_TOC_FORM, te->address_format,
   1177 	    te->starting_track, toc,
   1178 	    sizeof(toc->header) + len,
   1179 	    0, 0);
   1180 	if (error)
   1181 		return (error);
   1182 	if (te->address_format == CD_LBA_FORMAT)
   1183 		for (ntracks =
   1184 		    th->ending_track - th->starting_track + 1;
   1185 		    ntracks >= 0; ntracks--) {
   1186 			cte = &toc->entries[ntracks];
   1187 			cte->addr_type = CD_LBA_FORMAT;
   1188 			if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
   1189 				cte->addr.lba = le32toh(cte->addr.lba);
   1190 			else
   1191 				cte->addr.lba = be32toh(cte->addr.lba);
   1192 		}
   1193 	if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
   1194 		th->len = le16toh(th->len);
   1195 	else
   1196 		th->len = be16toh(th->len);
   1197 	return 0;
   1198 }
   1199 
   1200 /*
   1201  * Perform special action on behalf of the user.
   1202  * Knows about the internals of this device
   1203  */
   1204 static int
   1205 cdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
   1206 {
   1207 	struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(dev));
   1208 	struct dk_softc *dksc = &cd->sc_dksc;
   1209 	struct scsipi_periph *periph = cd->sc_periph;
   1210 	struct cd_formatted_toc toc;
   1211 	int part = CDPART(dev);
   1212 	int error;
   1213 
   1214 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cdioctl 0x%lx ", cmd));
   1215 
   1216 	/*
   1217 	 * If the device is not valid, some IOCTLs can still be
   1218 	 * handled on the raw partition. Check this here.
   1219 	 */
   1220 	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 &&
   1221 	    part != RAW_PART)
   1222 		return (EIO);
   1223 
   1224 	switch (cmd) {
   1225 	case DIOCTUR: {
   1226 		/* test unit ready */
   1227 		error = scsipi_test_unit_ready(cd->sc_periph, XS_CTL_SILENT);
   1228 		*((int*)addr) = (error == 0);
   1229 		if (error == ENODEV || error == EIO || error == 0)
   1230 			return 0;
   1231 		return error;
   1232 	}
   1233 	case CDIOCPLAYTRACKS: {
   1234 		/* PLAY_MSF command */
   1235 		struct ioc_play_track *args = addr;
   1236 
   1237 		if ((error = cd_set_pa_immed(cd, 0)) != 0)
   1238 			return (error);
   1239 		return (cd_play_tracks(cd, &toc, args->start_track,
   1240 		    args->start_index, args->end_track, args->end_index));
   1241 	}
   1242 	case CDIOCPLAYMSF: {
   1243 		/* PLAY_MSF command */
   1244 		struct ioc_play_msf *args = addr;
   1245 
   1246 		if ((error = cd_set_pa_immed(cd, 0)) != 0)
   1247 			return (error);
   1248 		return (cd_play_msf(cd, args->start_m, args->start_s,
   1249 		    args->start_f, args->end_m, args->end_s, args->end_f));
   1250 	}
   1251 	case CDIOCPLAYBLOCKS: {
   1252 		/* PLAY command */
   1253 		struct ioc_play_blocks *args = addr;
   1254 
   1255 		if ((error = cd_set_pa_immed(cd, 0)) != 0)
   1256 			return (error);
   1257 		return (cd_play(cd, args->blk, args->len));
   1258 	}
   1259 	case CDIOCREADSUBCHANNEL: {
   1260 		/* READ_SUBCHANNEL command */
   1261 		struct ioc_read_subchannel *args = addr;
   1262 		struct cd_sub_channel_info data;
   1263 		u_int len = args->data_len;
   1264 
   1265 		if (len > sizeof(data) ||
   1266 		    len < sizeof(struct cd_sub_channel_header))
   1267 			return (EINVAL);
   1268 		error = cd_read_subchannel(cd, args->address_format,
   1269 		    args->data_format, args->track, &data, len, 0);
   1270 		if (error)
   1271 			return (error);
   1272 		len = uimin(len, _2btol(data.header.data_len) +
   1273 		    sizeof(struct cd_sub_channel_header));
   1274 		return (copyout(&data, args->data, len));
   1275 	}
   1276 	case CDIOCREADSUBCHANNEL_BUF: {
   1277 		/* As CDIOCREADSUBCHANNEL, but without a 2nd buffer area */
   1278 		struct ioc_read_subchannel_buf *args = addr;
   1279 		if (args->req.data_len != sizeof args->info)
   1280 			return EINVAL;
   1281 		return cd_read_subchannel(cd, args->req.address_format,
   1282 		    args->req.data_format, args->req.track, &args->info,
   1283 		    sizeof(args->info), 0);
   1284 	}
   1285 	case CDIOREADTOCHEADER: {
   1286 		/* READ TOC format 0 command, static header */
   1287 		if ((error = cd_read_toc(cd, CD_TOC_FORM, 0, 0,
   1288 		    &toc, sizeof(toc.header), 0, 0)) != 0)
   1289 			return (error);
   1290 		if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
   1291 			toc.header.len = le16toh(toc.header.len);
   1292 		else
   1293 			toc.header.len = be16toh(toc.header.len);
   1294 		memcpy(addr, &toc.header, sizeof(toc.header));
   1295 		return (0);
   1296 	}
   1297 	case CDIOREADTOCENTRYS: {
   1298 		struct ioc_read_toc_entry *te = addr;
   1299 		error = do_cdioreadentries(cd, te, &toc);
   1300 		if (error != 0)
   1301 			return error;
   1302 		return copyout(toc.entries, te->data, uimin(te->data_len,
   1303 		    toc.header.len - (sizeof(toc.header.starting_track)
   1304 			+ sizeof(toc.header.ending_track))));
   1305 	}
   1306 	case CDIOREADTOCENTRIES_BUF: {
   1307 		struct ioc_read_toc_entry_buf *te = addr;
   1308 		error = do_cdioreadentries(cd, &te->req, &toc);
   1309 		if (error != 0)
   1310 			return error;
   1311 		memcpy(te->entry, toc.entries, uimin(te->req.data_len,
   1312 		    toc.header.len - (sizeof(toc.header.starting_track)
   1313 			+ sizeof(toc.header.ending_track))));
   1314 		return 0;
   1315 	}
   1316 	case CDIOREADMSADDR: {
   1317 		/* READ TOC format 0 command, length of first track only */
   1318 		int sessno = *(int*)addr;
   1319 
   1320 		if (sessno != 0)
   1321 			return (EINVAL);
   1322 
   1323 		return (cdreadmsaddr(cd, &toc, addr));
   1324 	}
   1325 	case CDIOCSETPATCH: {
   1326 		struct ioc_patch *arg = addr;
   1327 
   1328 		return (cd_setchan(cd, arg->patch[0], arg->patch[1],
   1329 		    arg->patch[2], arg->patch[3], 0));
   1330 	}
   1331 	case CDIOCGETVOL: {
   1332 		/* MODE SENSE command (AUDIO page) */
   1333 		struct ioc_vol *arg = addr;
   1334 
   1335 		return (cd_getvol(cd, arg, 0));
   1336 	}
   1337 	case CDIOCSETVOL: {
   1338 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1339 		struct ioc_vol *arg = addr;
   1340 
   1341 		return (cd_setvol(cd, arg, 0));
   1342 	}
   1343 	case CDIOCSETMONO:
   1344 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1345 		return (cd_setchan(cd, BOTH_CHANNEL, BOTH_CHANNEL,
   1346 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
   1347 
   1348 	case CDIOCSETSTEREO:
   1349 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1350 		return (cd_setchan(cd, LEFT_CHANNEL, RIGHT_CHANNEL,
   1351 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
   1352 
   1353 	case CDIOCSETMUTE:
   1354 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1355 		return (cd_setchan(cd, MUTE_CHANNEL, MUTE_CHANNEL,
   1356 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
   1357 
   1358 	case CDIOCSETLEFT:
   1359 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1360 		return (cd_setchan(cd, LEFT_CHANNEL, LEFT_CHANNEL,
   1361 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
   1362 
   1363 	case CDIOCSETRIGHT:
   1364 		/* MODE SENSE/MODE SELECT commands (AUDIO page) */
   1365 		return (cd_setchan(cd, RIGHT_CHANNEL, RIGHT_CHANNEL,
   1366 		    MUTE_CHANNEL, MUTE_CHANNEL, 0));
   1367 
   1368 	case CDIOCRESUME:
   1369 		/* PAUSE command */
   1370 		return (cd_pause(cd, PA_RESUME));
   1371 	case CDIOCPAUSE:
   1372 		/* PAUSE command */
   1373 		return (cd_pause(cd, PA_PAUSE));
   1374 	case CDIOCSTART:
   1375 		return (scsipi_start(periph, SSS_START, 0));
   1376 	case CDIOCSTOP:
   1377 		return (scsipi_start(periph, SSS_STOP, 0));
   1378 	case CDIOCCLOSE:
   1379 		return (scsipi_start(periph, SSS_START|SSS_LOEJ,
   1380 		    XS_CTL_IGNORE_NOT_READY | XS_CTL_IGNORE_MEDIA_CHANGE));
   1381 	case DIOCEJECT:
   1382 		if (*(int *)addr == 0) {
   1383 			int pmask = __BIT(part);
   1384 			/*
   1385 			 * Don't force eject: check that we are the only
   1386 			 * partition open. If so, unlock it.
   1387 			 */
   1388 			if (DK_BUSY(dksc, pmask) == 0) {
   1389 				error = scsipi_prevent(periph, SPAMR_ALLOW,
   1390 				    XS_CTL_IGNORE_NOT_READY);
   1391 				if (error)
   1392 					return (error);
   1393 			} else {
   1394 				return (EBUSY);
   1395 			}
   1396 		}
   1397 		/* FALLTHROUGH */
   1398 	case CDIOCEJECT: /* FALLTHROUGH */
   1399 	case ODIOCEJECT:
   1400 		error = scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0);
   1401 		if (error == 0)
   1402 			/* Make sure cdclose() will do silent operations */
   1403 			cd->flags |= CDF_EJECTED;
   1404 		return error;
   1405 	case DIOCCACHESYNC:
   1406 		/* SYNCHRONISE CACHES command */
   1407 		return (cdcachesync(periph, 0));
   1408 	case CDIOCALLOW:
   1409 		return (scsipi_prevent(periph, SPAMR_ALLOW, 0));
   1410 	case CDIOCPREVENT:
   1411 		return (scsipi_prevent(periph, SPAMR_PREVENT_DT, 0));
   1412 	case DIOCLOCK:
   1413 		return (scsipi_prevent(periph,
   1414 		    (*(int *)addr) ? SPAMR_PREVENT_DT : SPAMR_ALLOW, 0));
   1415 	case CDIOCSETDEBUG:
   1416 		cd->sc_periph->periph_dbflags |= (SCSIPI_DB1 | SCSIPI_DB2);
   1417 		return (0);
   1418 	case CDIOCCLRDEBUG:
   1419 		cd->sc_periph->periph_dbflags &= ~(SCSIPI_DB1 | SCSIPI_DB2);
   1420 		return (0);
   1421 	case CDIOCRESET:
   1422 	case SCIOCRESET:
   1423 		return (cd_reset(cd));
   1424 	case CDIOCLOADUNLOAD:
   1425 		/* LOAD_UNLOAD command */
   1426 		return (cd_load_unload(cd, addr));
   1427 	case DVD_AUTH:
   1428 		/* GPCMD_REPORT_KEY or GPCMD_SEND_KEY command */
   1429 		return (dvd_auth(cd, addr));
   1430 	case DVD_READ_STRUCT:
   1431 		/* GPCMD_READ_DVD_STRUCTURE command */
   1432 		return (dvd_read_struct(cd, addr));
   1433 	case MMCGETDISCINFO:
   1434 		/*
   1435 		 * GET_CONFIGURATION, READ_DISCINFO, READ_TRACKINFO,
   1436 		 * (READ_TOCf2, READ_CD_CAPACITY and GET_CONFIGURATION) commands
   1437 		 */
   1438 		return mmc_getdiscinfo(periph, (struct mmc_discinfo *) addr);
   1439 	case MMCGETTRACKINFO:
   1440 		/* READ TOCf2, READ_CD_CAPACITY and READ_TRACKINFO commands */
   1441 		return mmc_gettrackinfo(periph, (struct mmc_trackinfo *) addr);
   1442 	case MMCOP:
   1443 		/*
   1444 		 * CLOSE TRACK/SESSION, RESERVE_TRACK, REPAIR_TRACK,
   1445 		 * SYNCHRONISE_CACHE commands
   1446 		 */
   1447 		return mmc_do_op(periph, (struct mmc_op *) addr);
   1448 	case MMCSETUPWRITEPARAMS :
   1449 		/* MODE SENSE page 5, MODE_SELECT page 5 commands */
   1450 		return mmc_setup_writeparams(periph, (struct mmc_writeparams *) addr);
   1451 	default:
   1452 		error = dk_ioctl(dksc, dev, cmd, addr, flag, l);
   1453 		if (error == ENOTTY)
   1454 			error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, l);
   1455 		return (error);
   1456 	}
   1457 
   1458 #ifdef DIAGNOSTIC
   1459 	panic("cdioctl: impossible");
   1460 #endif
   1461 }
   1462 
   1463 static void
   1464 cd_label(device_t self, struct disklabel *lp)
   1465 {
   1466 	struct cd_softc *cd = device_private(self);
   1467 	struct scsipi_periph *periph = cd->sc_periph;
   1468 	struct cd_formatted_toc toc;
   1469 	int lastsession = 0;
   1470 
   1471 	strncpy(lp->d_typename, "optical media", 16);
   1472 	lp->d_rpm = 300;
   1473 	lp->d_flags |= D_REMOVABLE;
   1474 
   1475 	if ((periph->periph_flags & PERIPH_MEDIA_LOADED) != 0) {
   1476 		lp->d_flags |= D_SCSI_MMC;
   1477 		(void) cdreadmsaddr(cd, &toc, &lastsession);
   1478 	}
   1479 
   1480 	lp->d_partitions[0].p_offset = 0;
   1481 	lp->d_partitions[0].p_size = lp->d_secperunit;
   1482 	lp->d_partitions[0].p_cdsession = lastsession;
   1483 	lp->d_partitions[0].p_fstype = FS_ISO9660;
   1484 
   1485 	lp->d_partitions[RAW_PART].p_offset = 0;
   1486 	lp->d_partitions[RAW_PART].p_size = lp->d_secperunit;
   1487 	lp->d_partitions[RAW_PART].p_fstype = FS_UDF;
   1488 }
   1489 
   1490 /*
   1491  * Reading a disc's total capacity is apparently a very difficult issue for the
   1492  * SCSI standardisation group. Every disc type seems to have its own
   1493  * (re)invented size request method and modifiers. The failsafe way of
   1494  * determining the total (max) capacity i.e. not the recorded capacity but the
   1495  * total maximum capacity is to request the info on the last track and
   1496  * calculate the last lba.
   1497  *
   1498  * For ROM drives, we go for the CD recorded capacity. For recordable devices
   1499  * we count.
   1500  */
   1501 static int
   1502 read_cd_capacity(struct scsipi_periph *periph, uint32_t *blksize, u_long *last_lba)
   1503 {
   1504 	struct scsipi_read_cd_capacity    cap_cmd;
   1505 	/*
   1506 	 * XXX: see PR 48550 and PR 48754:
   1507 	 * the ahcisata(4) driver can not deal with unaligned
   1508 	 * data, so align this "a bit"
   1509 	 */
   1510 	struct scsipi_read_cd_cap_data    cap __aligned(2);
   1511 	struct scsipi_read_discinfo       di_cmd;
   1512 	struct scsipi_read_discinfo_data  di __aligned(2);
   1513 	struct scsipi_read_trackinfo      ti_cmd;
   1514 	struct scsipi_read_trackinfo_data ti __aligned(2);
   1515 	uint32_t track_start, track_size;
   1516 	int error, flags, msb, lsb, last_track;
   1517 
   1518 	/* if the device doesn't grok capacity, return the dummies */
   1519 	if (periph->periph_quirks & PQUIRK_NOCAPACITY)
   1520 		return 0;
   1521 
   1522 	/* first try read CD capacity for blksize and last recorded lba */
   1523 	/* issue the cd capacity request */
   1524 	flags = XS_CTL_DATA_IN;
   1525 	memset(&cap_cmd, 0, sizeof(cap_cmd));
   1526 	memset(&cap, 0, sizeof(cap));
   1527 	cap_cmd.opcode = READ_CD_CAPACITY;
   1528 
   1529 	error = scsipi_command(periph,
   1530 	    (void *) &cap_cmd, sizeof(cap_cmd),
   1531 	    (void *) &cap,     sizeof(cap),
   1532 	    CDRETRIES, 30000, NULL, flags);
   1533 	if (error)
   1534 		return error;
   1535 
   1536 	/* retrieve values and sanity check them */
   1537 	*blksize  = _4btol(cap.length);
   1538 	*last_lba = _4btol(cap.addr);
   1539 
   1540 	/* blksize is 2048 for CD, but some drives give gibberish */
   1541 	if ((*blksize < 512) || ((*blksize & 511) != 0)
   1542 	    || (*blksize > 16*1024)) {
   1543 		if (*blksize > 16*1024)
   1544 			aprint_error("read_cd_capacity: extra large block "
   1545 			    "size %u found - limiting to 2kByte\n",
   1546 			    *blksize);
   1547 		*blksize = 2048;	/* some drives lie ! */
   1548 	}
   1549 
   1550 	/* If the device doesn't handle READ_DISCINFO properly, */
   1551 	/* return the dummies */
   1552 	if (periph->periph_quirks & PQUIRK_NOREADDISCINFO)
   1553 		return 0;
   1554 
   1555 	/* recordables have READ_DISCINFO implemented */
   1556 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
   1557 	memset(&di_cmd, 0, sizeof(di_cmd));
   1558 	di_cmd.opcode = READ_DISCINFO;
   1559 	_lto2b(READ_DISCINFO_BIGSIZE, di_cmd.data_len);
   1560 
   1561 	error = scsipi_command(periph,
   1562 	    (void *) &di_cmd,  sizeof(di_cmd),
   1563 	    (void *) &di,      READ_DISCINFO_BIGSIZE,
   1564 	    CDRETRIES, 30000, NULL, flags);
   1565 	if (error == 0) {
   1566 		msb = di.last_track_last_session_msb;
   1567 		lsb = di.last_track_last_session_lsb;
   1568 		last_track = (msb << 8) | lsb;
   1569 
   1570 		/* request info on last track */
   1571 		memset(&ti_cmd, 0, sizeof(ti_cmd));
   1572 		ti_cmd.opcode = READ_TRACKINFO;
   1573 		ti_cmd.addr_type = 1;			/* on tracknr */
   1574 		_lto4b(last_track, ti_cmd.address);	/* tracknr    */
   1575 		_lto2b(sizeof(ti), ti_cmd.data_len);
   1576 
   1577 		error = scsipi_command(periph,
   1578 		    (void *) &ti_cmd,  sizeof(ti_cmd),
   1579 		    (void *) &ti,      sizeof(ti),
   1580 		    CDRETRIES, 30000, NULL, flags);
   1581 		if (error == 0) {
   1582 			track_start = _4btol(ti.track_start);
   1583 			track_size  = _4btol(ti.track_size);
   1584 
   1585 			/* overwrite only with a sane value */
   1586 			if (track_start + track_size >= 100)
   1587 				*last_lba = (u_long) track_start + track_size -1;
   1588 		}
   1589 	}
   1590 
   1591 	/* sanity check for lba_size */
   1592 	if (*last_lba < 100)
   1593 		*last_lba = 400000-1;
   1594 
   1595 	return 0;
   1596 }
   1597 
   1598 /*
   1599  * Find out from the device what its capacity is
   1600  */
   1601 static u_long
   1602 cd_size(struct cd_softc *cd, int flags)
   1603 {
   1604 	uint32_t blksize = 2048;
   1605 	u_long last_lba = 0, size;
   1606 	int error;
   1607 
   1608 	error = read_cd_capacity(cd->sc_periph, &blksize, &last_lba);
   1609 	if (error)
   1610 		goto error;
   1611 
   1612 	if (blksize != 2048) {
   1613 		if (cd_setblksize(cd) == 0) {
   1614 			blksize = 2048;
   1615 			error = read_cd_capacity(cd->sc_periph,
   1616 			    &blksize, &last_lba);
   1617 			if (error)
   1618 				goto error;
   1619 		}
   1620 	}
   1621 
   1622 	size = last_lba + 1;
   1623 	cd->params.blksize     = blksize;
   1624 	cd->params.disksize    = size;
   1625 	cd->params.disksize512 = ((u_int64_t)cd->params.disksize * blksize) / DEV_BSIZE;
   1626 
   1627 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2,
   1628 	    ("cd_size: %u %lu\n", blksize, size));
   1629 
   1630 	return size;
   1631 
   1632 error:
   1633 	/* something went wrong */
   1634 	cd->params.blksize     = 2048;
   1635 	cd->params.disksize    = 0;
   1636 	cd->params.disksize512 = 0;
   1637 
   1638 	SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cd_size: failed\n"));
   1639 
   1640 	return 0;
   1641 }
   1642 
   1643 /*
   1644  * Get scsi driver to send a "start playing" command
   1645  */
   1646 static int
   1647 cd_play(struct cd_softc *cd, int blkno, int nblks)
   1648 {
   1649 	struct scsipi_play cmd;
   1650 
   1651 	memset(&cmd, 0, sizeof(cmd));
   1652 	cmd.opcode = PLAY;
   1653 	_lto4b(blkno, cmd.blk_addr);
   1654 	_lto2b(nblks, cmd.xfer_len);
   1655 
   1656 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
   1657 	    CDRETRIES, 30000, NULL, 0));
   1658 }
   1659 
   1660 /*
   1661  * Get scsi driver to send a "start playing" command
   1662  */
   1663 static int
   1664 cd_play_tracks(struct cd_softc *cd, struct cd_formatted_toc *toc, int strack,
   1665     int sindex, int etrack, int eindex)
   1666 {
   1667 	int error;
   1668 
   1669 	if (!etrack)
   1670 		return (EIO);
   1671 	if (strack > etrack)
   1672 		return (EINVAL);
   1673 
   1674 	error = cd_load_toc(cd, CD_TOC_FORM, toc, 0);
   1675 	if (error)
   1676 		return (error);
   1677 
   1678 	if (++etrack > (toc->header.ending_track+1))
   1679 		etrack = toc->header.ending_track+1;
   1680 
   1681 	strack -= toc->header.starting_track;
   1682 	etrack -= toc->header.starting_track;
   1683 	if (strack < 0)
   1684 		return (EINVAL);
   1685 
   1686 	return (cd_play_msf(cd, toc->entries[strack].addr.msf.minute,
   1687 	    toc->entries[strack].addr.msf.second,
   1688 	    toc->entries[strack].addr.msf.frame,
   1689 	    toc->entries[etrack].addr.msf.minute,
   1690 	    toc->entries[etrack].addr.msf.second,
   1691 	    toc->entries[etrack].addr.msf.frame));
   1692 }
   1693 
   1694 /*
   1695  * Get scsi driver to send a "play msf" command
   1696  */
   1697 static int
   1698 cd_play_msf(struct cd_softc *cd, int startm, int starts, int startf, int endm,
   1699     int ends, int endf)
   1700 {
   1701 	struct scsipi_play_msf cmd;
   1702 
   1703 	memset(&cmd, 0, sizeof(cmd));
   1704 	cmd.opcode = PLAY_MSF;
   1705 	cmd.start_m = startm;
   1706 	cmd.start_s = starts;
   1707 	cmd.start_f = startf;
   1708 	cmd.end_m = endm;
   1709 	cmd.end_s = ends;
   1710 	cmd.end_f = endf;
   1711 
   1712 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
   1713 	    CDRETRIES, 30000, NULL, 0));
   1714 }
   1715 
   1716 /*
   1717  * Get scsi driver to send a "start up" command
   1718  */
   1719 static int
   1720 cd_pause(struct cd_softc *cd, int go)
   1721 {
   1722 	struct scsipi_pause cmd;
   1723 
   1724 	memset(&cmd, 0, sizeof(cmd));
   1725 	cmd.opcode = PAUSE;
   1726 	cmd.resume = go & 0xff;
   1727 
   1728 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
   1729 	    CDRETRIES, 30000, NULL, 0));
   1730 }
   1731 
   1732 /*
   1733  * Get scsi driver to send a "RESET" command
   1734  */
   1735 static int
   1736 cd_reset(struct cd_softc *cd)
   1737 {
   1738 
   1739 	return (scsipi_command(cd->sc_periph, 0, 0, 0, 0,
   1740 	    CDRETRIES, 30000, NULL, XS_CTL_RESET));
   1741 }
   1742 
   1743 /*
   1744  * Read subchannel
   1745  */
   1746 static int
   1747 cd_read_subchannel(struct cd_softc *cd, int mode, int format, int track,
   1748     struct cd_sub_channel_info *data, int len, int flags)
   1749 {
   1750 	struct scsipi_read_subchannel cmd;
   1751 
   1752 	memset(&cmd, 0, sizeof(cmd));
   1753 	cmd.opcode = READ_SUBCHANNEL;
   1754 	if (mode == CD_MSF_FORMAT)
   1755 		cmd.byte2 |= CD_MSF;
   1756 	cmd.byte3 = SRS_SUBQ;
   1757 	cmd.subchan_format = format;
   1758 	cmd.track = track;
   1759 	_lto2b(len, cmd.data_len);
   1760 
   1761 	return (scsipi_command(cd->sc_periph,
   1762 	    (void *)&cmd, sizeof(struct scsipi_read_subchannel),
   1763 	    (void *)data, len,
   1764 	    CDRETRIES, 30000, NULL, flags | XS_CTL_DATA_IN | XS_CTL_SILENT));
   1765 }
   1766 
   1767 /*
   1768  * Read table of contents
   1769  */
   1770 static int
   1771 cd_read_toc(struct cd_softc *cd, int respf, int mode, int start,
   1772     struct cd_formatted_toc *toc, int len, int flags, int control)
   1773 {
   1774 	struct scsipi_read_toc cmd;
   1775 	int ntoc;
   1776 
   1777 	memset(&cmd, 0, sizeof(cmd));
   1778 #if 0
   1779 	if (len != sizeof(struct ioc_toc_header))
   1780 		ntoc = ((len) - sizeof(struct ioc_toc_header)) /
   1781 		    sizeof(struct cd_toc_entry);
   1782 	else
   1783 #endif
   1784 	ntoc = len;
   1785 	cmd.opcode = READ_TOC;
   1786 	if (mode == CD_MSF_FORMAT)
   1787 		cmd.addr_mode |= CD_MSF;
   1788 	cmd.resp_format = respf;
   1789 	cmd.from_track = start;
   1790 	_lto2b(ntoc, cmd.data_len);
   1791 	cmd.control = control;
   1792 
   1793 	return (scsipi_command(cd->sc_periph,
   1794 	    (void *)&cmd, sizeof(cmd), (void *)toc, len, CDRETRIES,
   1795 	    30000, NULL, flags | XS_CTL_DATA_IN));
   1796 }
   1797 
   1798 static int
   1799 cd_load_toc(struct cd_softc *cd, int respf, struct cd_formatted_toc *toc, int flags)
   1800 {
   1801 	int ntracks, len, error;
   1802 
   1803 	if ((error = cd_read_toc(cd, respf, 0, 0, toc, sizeof(toc->header),
   1804 	    flags, 0)) != 0)
   1805 		return (error);
   1806 
   1807 	ntracks = toc->header.ending_track - toc->header.starting_track + 1;
   1808 	len = (ntracks + 1) * sizeof(struct cd_toc_entry) +
   1809 	    sizeof(toc->header);
   1810 	if ((error = cd_read_toc(cd, respf, CD_MSF_FORMAT, 0, toc, len,
   1811 	    flags, 0)) != 0)
   1812 		return (error);
   1813 	return (0);
   1814 }
   1815 
   1816 /*
   1817  * Get the scsi driver to send a full inquiry to the device and use the
   1818  * results to fill out the disk parameter structure.
   1819  */
   1820 static int
   1821 cd_get_parms(struct cd_softc *cd, int flags)
   1822 {
   1823 
   1824 	/*
   1825 	 * give a number of sectors so that sec * trks * cyls
   1826 	 * is <= disk_size
   1827 	 */
   1828 	if (cd_size(cd, flags) == 0)
   1829 		return (ENXIO);
   1830 	return (0);
   1831 }
   1832 
   1833 static int
   1834 cdsize(dev_t dev)
   1835 {
   1836 
   1837 	/* CD-ROMs are read-only. */
   1838 	return (-1);
   1839 }
   1840 
   1841 static int
   1842 cddump(dev_t dev, daddr_t blkno, void *va, size_t size)
   1843 {
   1844 
   1845 	/* Not implemented. */
   1846 	return (ENXIO);
   1847 }
   1848 
   1849 #define	dvd_copy_key(dst, src)		memcpy((dst), (src), sizeof(dvd_key))
   1850 #define	dvd_copy_challenge(dst, src)	memcpy((dst), (src), sizeof(dvd_challenge))
   1851 
   1852 static int
   1853 dvd_auth(struct cd_softc *cd, dvd_authinfo *a)
   1854 {
   1855 	struct scsipi_generic cmd;
   1856 	u_int8_t bf[20];
   1857 	int error;
   1858 
   1859 	memset(cmd.bytes, 0, 15);
   1860 	memset(bf, 0, sizeof(bf));
   1861 
   1862 	switch (a->type) {
   1863 	case DVD_LU_SEND_AGID:
   1864 		cmd.opcode = GPCMD_REPORT_KEY;
   1865 		cmd.bytes[8] = 8;
   1866 		cmd.bytes[9] = 0 | (0 << 6);
   1867 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
   1868 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1869 		if (error)
   1870 			return (error);
   1871 		a->lsa.agid = bf[7] >> 6;
   1872 		return (0);
   1873 
   1874 	case DVD_LU_SEND_CHALLENGE:
   1875 		cmd.opcode = GPCMD_REPORT_KEY;
   1876 		cmd.bytes[8] = 16;
   1877 		cmd.bytes[9] = 1 | (a->lsc.agid << 6);
   1878 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
   1879 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1880 		if (error)
   1881 			return (error);
   1882 		dvd_copy_challenge(a->lsc.chal, &bf[4]);
   1883 		return (0);
   1884 
   1885 	case DVD_LU_SEND_KEY1:
   1886 		cmd.opcode = GPCMD_REPORT_KEY;
   1887 		cmd.bytes[8] = 12;
   1888 		cmd.bytes[9] = 2 | (a->lsk.agid << 6);
   1889 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
   1890 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1891 		if (error)
   1892 			return (error);
   1893 		dvd_copy_key(a->lsk.key, &bf[4]);
   1894 		return (0);
   1895 
   1896 	case DVD_LU_SEND_TITLE_KEY:
   1897 		cmd.opcode = GPCMD_REPORT_KEY;
   1898 		_lto4b(a->lstk.lba, &cmd.bytes[1]);
   1899 		cmd.bytes[8] = 12;
   1900 		cmd.bytes[9] = 4 | (a->lstk.agid << 6);
   1901 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
   1902 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1903 		if (error)
   1904 			return (error);
   1905 		a->lstk.cpm = (bf[4] >> 7) & 1;
   1906 		a->lstk.cp_sec = (bf[4] >> 6) & 1;
   1907 		a->lstk.cgms = (bf[4] >> 4) & 3;
   1908 		dvd_copy_key(a->lstk.title_key, &bf[5]);
   1909 		return (0);
   1910 
   1911 	case DVD_LU_SEND_ASF:
   1912 		cmd.opcode = GPCMD_REPORT_KEY;
   1913 		cmd.bytes[8] = 8;
   1914 		cmd.bytes[9] = 5 | (a->lsasf.agid << 6);
   1915 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
   1916 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1917 		if (error)
   1918 			return (error);
   1919 		a->lsasf.asf = bf[7] & 1;
   1920 		return (0);
   1921 
   1922 	case DVD_HOST_SEND_CHALLENGE:
   1923 		cmd.opcode = GPCMD_SEND_KEY;
   1924 		cmd.bytes[8] = 16;
   1925 		cmd.bytes[9] = 1 | (a->hsc.agid << 6);
   1926 		bf[1] = 14;
   1927 		dvd_copy_challenge(&bf[4], a->hsc.chal);
   1928 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
   1929 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
   1930 		if (error)
   1931 			return (error);
   1932 		a->type = DVD_LU_SEND_KEY1;
   1933 		return (0);
   1934 
   1935 	case DVD_HOST_SEND_KEY2:
   1936 		cmd.opcode = GPCMD_SEND_KEY;
   1937 		cmd.bytes[8] = 12;
   1938 		cmd.bytes[9] = 3 | (a->hsk.agid << 6);
   1939 		bf[1] = 10;
   1940 		dvd_copy_key(&bf[4], a->hsk.key);
   1941 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
   1942 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
   1943 		if (error) {
   1944 			a->type = DVD_AUTH_FAILURE;
   1945 			return (error);
   1946 		}
   1947 		a->type = DVD_AUTH_ESTABLISHED;
   1948 		return (0);
   1949 
   1950 	case DVD_INVALIDATE_AGID:
   1951 		cmd.opcode = GPCMD_REPORT_KEY;
   1952 		cmd.bytes[9] = 0x3f | (a->lsa.agid << 6);
   1953 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
   1954 		    CDRETRIES, 30000, NULL, 0);
   1955 		if (error)
   1956 			return (error);
   1957 		return (0);
   1958 
   1959 	case DVD_LU_SEND_RPC_STATE:
   1960 		cmd.opcode = GPCMD_REPORT_KEY;
   1961 		cmd.bytes[8] = 8;
   1962 		cmd.bytes[9] = 8 | (0 << 6);
   1963 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
   1964 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   1965 		if (error)
   1966 			return (error);
   1967 		a->lrpcs.type = (bf[4] >> 6) & 3;
   1968 		a->lrpcs.vra = (bf[4] >> 3) & 7;
   1969 		a->lrpcs.ucca = (bf[4]) & 7;
   1970 		a->lrpcs.region_mask = bf[5];
   1971 		a->lrpcs.rpc_scheme = bf[6];
   1972 		return (0);
   1973 
   1974 	case DVD_HOST_SEND_RPC_STATE:
   1975 		cmd.opcode = GPCMD_SEND_KEY;
   1976 		cmd.bytes[8] = 8;
   1977 		cmd.bytes[9] = 6 | (0 << 6);
   1978 		bf[1] = 6;
   1979 		bf[4] = a->hrpcs.pdrc;
   1980 		error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
   1981 		    CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
   1982 		if (error)
   1983 			return (error);
   1984 		return (0);
   1985 
   1986 	default:
   1987 		return (ENOTTY);
   1988 	}
   1989 }
   1990 
   1991 static int
   1992 dvd_read_physical(struct cd_softc *cd, dvd_struct *s)
   1993 {
   1994 	struct scsipi_generic cmd;
   1995 	u_int8_t bf[4 + 4 * 20], *bufp;
   1996 	int error;
   1997 	struct dvd_layer *layer;
   1998 	int i;
   1999 
   2000 	memset(cmd.bytes, 0, 15);
   2001 	memset(bf, 0, sizeof(bf));
   2002 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
   2003 	cmd.bytes[6] = s->type;
   2004 	_lto2b(sizeof(bf), &cmd.bytes[7]);
   2005 
   2006 	cmd.bytes[5] = s->physical.layer_num;
   2007 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
   2008 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   2009 	if (error)
   2010 		return (error);
   2011 	for (i = 0, bufp = &bf[4], layer = &s->physical.layer[0]; i < 4;
   2012 	     i++, bufp += 20, layer++) {
   2013 		memset(layer, 0, sizeof(*layer));
   2014                 layer->book_version = bufp[0] & 0xf;
   2015                 layer->book_type = bufp[0] >> 4;
   2016                 layer->min_rate = bufp[1] & 0xf;
   2017                 layer->disc_size = bufp[1] >> 4;
   2018                 layer->layer_type = bufp[2] & 0xf;
   2019                 layer->track_path = (bufp[2] >> 4) & 1;
   2020                 layer->nlayers = (bufp[2] >> 5) & 3;
   2021                 layer->track_density = bufp[3] & 0xf;
   2022                 layer->linear_density = bufp[3] >> 4;
   2023                 layer->start_sector = _4btol(&bufp[4]);
   2024                 layer->end_sector = _4btol(&bufp[8]);
   2025                 layer->end_sector_l0 = _4btol(&bufp[12]);
   2026                 layer->bca = bufp[16] >> 7;
   2027 	}
   2028 	return (0);
   2029 }
   2030 
   2031 static int
   2032 dvd_read_copyright(struct cd_softc *cd, dvd_struct *s)
   2033 {
   2034 	struct scsipi_generic cmd;
   2035 	u_int8_t bf[8];
   2036 	int error;
   2037 
   2038 	memset(cmd.bytes, 0, 15);
   2039 	memset(bf, 0, sizeof(bf));
   2040 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
   2041 	cmd.bytes[6] = s->type;
   2042 	_lto2b(sizeof(bf), &cmd.bytes[7]);
   2043 
   2044 	cmd.bytes[5] = s->copyright.layer_num;
   2045 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
   2046 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   2047 	if (error)
   2048 		return (error);
   2049 	s->copyright.cpst = bf[4];
   2050 	s->copyright.rmi = bf[5];
   2051 	return (0);
   2052 }
   2053 
   2054 static int
   2055 dvd_read_disckey(struct cd_softc *cd, dvd_struct *s)
   2056 {
   2057 	struct scsipi_generic cmd;
   2058 	u_int8_t *bf;
   2059 	int error;
   2060 
   2061 	bf = malloc(4 + 2048, M_TEMP, M_WAITOK|M_ZERO);
   2062 	if (bf == NULL)
   2063 		return EIO;
   2064 	memset(cmd.bytes, 0, 15);
   2065 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
   2066 	cmd.bytes[6] = s->type;
   2067 	_lto2b(4 + 2048, &cmd.bytes[7]);
   2068 
   2069 	cmd.bytes[9] = s->disckey.agid << 6;
   2070 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 4 + 2048,
   2071 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   2072 	if (error == 0)
   2073 		memcpy(s->disckey.value, &bf[4], 2048);
   2074 	free(bf, M_TEMP);
   2075 	return error;
   2076 }
   2077 
   2078 static int
   2079 dvd_read_bca(struct cd_softc *cd, dvd_struct *s)
   2080 {
   2081 	struct scsipi_generic cmd;
   2082 	u_int8_t bf[4 + 188];
   2083 	int error;
   2084 
   2085 	memset(cmd.bytes, 0, 15);
   2086 	memset(bf, 0, sizeof(bf));
   2087 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
   2088 	cmd.bytes[6] = s->type;
   2089 	_lto2b(sizeof(bf), &cmd.bytes[7]);
   2090 
   2091 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
   2092 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   2093 	if (error)
   2094 		return (error);
   2095 	s->bca.len = _2btol(&bf[0]);
   2096 	if (s->bca.len < 12 || s->bca.len > 188)
   2097 		return (EIO);
   2098 	memcpy(s->bca.value, &bf[4], s->bca.len);
   2099 	return (0);
   2100 }
   2101 
   2102 static int
   2103 dvd_read_manufact(struct cd_softc *cd, dvd_struct *s)
   2104 {
   2105 	struct scsipi_generic cmd;
   2106 	u_int8_t *bf;
   2107 	int error;
   2108 
   2109 	bf = malloc(4 + 2048, M_TEMP, M_WAITOK|M_ZERO);
   2110 	if (bf == NULL)
   2111 		return (EIO);
   2112 	memset(cmd.bytes, 0, 15);
   2113 	cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
   2114 	cmd.bytes[6] = s->type;
   2115 	_lto2b(4 + 2048, &cmd.bytes[7]);
   2116 
   2117 	error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 4 + 2048,
   2118 	    CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
   2119 	if (error == 0) {
   2120 		s->manufact.len = _2btol(&bf[0]);
   2121 		if (s->manufact.len >= 0 && s->manufact.len <= 2048)
   2122 			memcpy(s->manufact.value, &bf[4], s->manufact.len);
   2123 		else
   2124 			error = EIO;
   2125 	}
   2126 	free(bf, M_TEMP);
   2127 	return error;
   2128 }
   2129 
   2130 static int
   2131 dvd_read_struct(struct cd_softc *cd, dvd_struct *s)
   2132 {
   2133 
   2134 	switch (s->type) {
   2135 	case DVD_STRUCT_PHYSICAL:
   2136 		return (dvd_read_physical(cd, s));
   2137 	case DVD_STRUCT_COPYRIGHT:
   2138 		return (dvd_read_copyright(cd, s));
   2139 	case DVD_STRUCT_DISCKEY:
   2140 		return (dvd_read_disckey(cd, s));
   2141 	case DVD_STRUCT_BCA:
   2142 		return (dvd_read_bca(cd, s));
   2143 	case DVD_STRUCT_MANUFACT:
   2144 		return (dvd_read_manufact(cd, s));
   2145 	default:
   2146 		return (EINVAL);
   2147 	}
   2148 }
   2149 
   2150 static int
   2151 cd_mode_sense(struct cd_softc *cd, u_int8_t byte2, void *sense, size_t size,
   2152     int page, int flags, int *big)
   2153 {
   2154 
   2155 	if (cd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) {
   2156 		*big = 1;
   2157 		return scsipi_mode_sense_big(cd->sc_periph, byte2, page, sense,
   2158 		    size + sizeof(struct scsi_mode_parameter_header_10),
   2159 		    flags, CDRETRIES, 20000);
   2160 	} else {
   2161 		*big = 0;
   2162 		return scsipi_mode_sense(cd->sc_periph, byte2, page, sense,
   2163 		    size + sizeof(struct scsi_mode_parameter_header_6),
   2164 		    flags, CDRETRIES, 20000);
   2165 	}
   2166 }
   2167 
   2168 static int
   2169 cd_mode_select(struct cd_softc *cd, u_int8_t byte2, void *sense, size_t size,
   2170     int flags, int big)
   2171 {
   2172 
   2173 	if (big) {
   2174 		struct scsi_mode_parameter_header_10 *header = sense;
   2175 
   2176 		_lto2b(0, header->data_length);
   2177 		return scsipi_mode_select_big(cd->sc_periph, byte2, sense,
   2178 		    size + sizeof(struct scsi_mode_parameter_header_10),
   2179 		    flags, CDRETRIES, 20000);
   2180 	} else {
   2181 		struct scsi_mode_parameter_header_6 *header = sense;
   2182 
   2183 		header->data_length = 0;
   2184 		return scsipi_mode_select(cd->sc_periph, byte2, sense,
   2185 		    size + sizeof(struct scsi_mode_parameter_header_6),
   2186 		    flags, CDRETRIES, 20000);
   2187 	}
   2188 }
   2189 
   2190 static int
   2191 cd_set_pa_immed(struct cd_softc *cd, int flags)
   2192 {
   2193 	struct {
   2194 		union {
   2195 			struct scsi_mode_parameter_header_6 small;
   2196 			struct scsi_mode_parameter_header_10 big;
   2197 		} header;
   2198 		struct cd_audio_page page;
   2199 	} data;
   2200 	int error;
   2201 	uint8_t oflags;
   2202 	int big, byte2;
   2203 	struct cd_audio_page *page;
   2204 
   2205 	byte2 = SMS_DBD;
   2206 try_again:
   2207 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
   2208 	    AUDIO_PAGE, flags, &big)) != 0) {
   2209 		if (byte2 == SMS_DBD) {
   2210 			/* Device may not understand DBD; retry without */
   2211 			byte2 = 0;
   2212 			goto try_again;
   2213 		}
   2214 		return (error);
   2215 	}
   2216 
   2217 	if (big)
   2218 		page = (void *)((u_long)&data.header.big +
   2219 				sizeof data.header.big +
   2220 				_2btol(data.header.big.blk_desc_len));
   2221 	else
   2222 		page = (void *)((u_long)&data.header.small +
   2223 				sizeof data.header.small +
   2224 				data.header.small.blk_desc_len);
   2225 
   2226 	oflags = page->flags;
   2227 	page->flags &= ~CD_PA_SOTC;
   2228 	page->flags |= CD_PA_IMMED;
   2229 	if (oflags == page->flags)
   2230 		return (0);
   2231 
   2232 	return (cd_mode_select(cd, SMS_PF, &data,
   2233 	    sizeof(struct scsi_mode_page_header) + page->pg_length,
   2234 	    flags, big));
   2235 }
   2236 
   2237 static int
   2238 cd_setchan(struct cd_softc *cd, int p0, int p1, int p2, int p3, int flags)
   2239 {
   2240 	struct {
   2241 		union {
   2242 			struct scsi_mode_parameter_header_6 small;
   2243 			struct scsi_mode_parameter_header_10 big;
   2244 		} header;
   2245 		struct cd_audio_page page;
   2246 	} data;
   2247 	int error;
   2248 	int big, byte2;
   2249 	struct cd_audio_page *page;
   2250 
   2251 	byte2 = SMS_DBD;
   2252 try_again:
   2253 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
   2254 	    AUDIO_PAGE, flags, &big)) != 0) {
   2255 		if (byte2 == SMS_DBD) {
   2256 			/* Device may not understand DBD; retry without */
   2257 			byte2 = 0;
   2258 			goto try_again;
   2259 		}
   2260 		return (error);
   2261 	}
   2262 
   2263 	if (big)
   2264 		page = (void *)((u_long)&data.header.big +
   2265 				sizeof data.header.big +
   2266 				_2btol(data.header.big.blk_desc_len));
   2267 	else
   2268 		page = (void *)((u_long)&data.header.small +
   2269 				sizeof data.header.small +
   2270 				data.header.small.blk_desc_len);
   2271 
   2272 	page->port[0].channels = p0;
   2273 	page->port[1].channels = p1;
   2274 	page->port[2].channels = p2;
   2275 	page->port[3].channels = p3;
   2276 
   2277 	return (cd_mode_select(cd, SMS_PF, &data,
   2278 	    sizeof(struct scsi_mode_page_header) + page->pg_length,
   2279 	    flags, big));
   2280 }
   2281 
   2282 static int
   2283 cd_getvol(struct cd_softc *cd, struct ioc_vol *arg, int flags)
   2284 {
   2285 	struct {
   2286 		union {
   2287 			struct scsi_mode_parameter_header_6 small;
   2288 			struct scsi_mode_parameter_header_10 big;
   2289 		} header;
   2290 		struct cd_audio_page page;
   2291 	} data;
   2292 	int error;
   2293 	int big, byte2;
   2294 	struct cd_audio_page *page;
   2295 
   2296 	byte2 = SMS_DBD;
   2297 try_again:
   2298 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
   2299 	    AUDIO_PAGE, flags, &big)) != 0) {
   2300 		if (byte2 == SMS_DBD) {
   2301 			/* Device may not understand DBD; retry without */
   2302 			byte2 = 0;
   2303 			goto try_again;
   2304 		}
   2305 		return (error);
   2306 	}
   2307 
   2308 	if (big)
   2309 		page = (void *)((u_long)&data.header.big +
   2310 				sizeof data.header.big +
   2311 				_2btol(data.header.big.blk_desc_len));
   2312 	else
   2313 		page = (void *)((u_long)&data.header.small +
   2314 				sizeof data.header.small +
   2315 				data.header.small.blk_desc_len);
   2316 
   2317 	arg->vol[0] = page->port[0].volume;
   2318 	arg->vol[1] = page->port[1].volume;
   2319 	arg->vol[2] = page->port[2].volume;
   2320 	arg->vol[3] = page->port[3].volume;
   2321 
   2322 	return (0);
   2323 }
   2324 
   2325 static int
   2326 cd_setvol(struct cd_softc *cd, const struct ioc_vol *arg, int flags)
   2327 {
   2328 	struct {
   2329 		union {
   2330 			struct scsi_mode_parameter_header_6 small;
   2331 			struct scsi_mode_parameter_header_10 big;
   2332 		} header;
   2333 		struct cd_audio_page page;
   2334 	} data, mask;
   2335 	int error;
   2336 	int big, byte2;
   2337 	struct cd_audio_page *page, *page2;
   2338 
   2339 	byte2 = SMS_DBD;
   2340 try_again:
   2341 	if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
   2342 	    AUDIO_PAGE, flags, &big)) != 0) {
   2343 		if (byte2 == SMS_DBD) {
   2344 			/* Device may not understand DBD; retry without */
   2345 			byte2 = 0;
   2346 			goto try_again;
   2347 		}
   2348 		return (error);
   2349 	}
   2350 	if ((error = cd_mode_sense(cd, byte2, &mask, sizeof(mask.page),
   2351 	    AUDIO_PAGE|SMS_PCTRL_CHANGEABLE, flags, &big)) != 0)
   2352 		return (error);
   2353 
   2354 	if (big) {
   2355 		page = (void *)((u_long)&data.header.big +
   2356 				sizeof data.header.big +
   2357 				_2btol(data.header.big.blk_desc_len));
   2358 		page2 = (void *)((u_long)&mask.header.big +
   2359 				sizeof mask.header.big +
   2360 				_2btol(mask.header.big.blk_desc_len));
   2361 	} else {
   2362 		page = (void *)((u_long)&data.header.small +
   2363 				sizeof data.header.small +
   2364 				data.header.small.blk_desc_len);
   2365 		page2 = (void *)((u_long)&mask.header.small +
   2366 				sizeof mask.header.small +
   2367 				mask.header.small.blk_desc_len);
   2368 	}
   2369 
   2370 	page->port[0].volume = arg->vol[0] & page2->port[0].volume;
   2371 	page->port[1].volume = arg->vol[1] & page2->port[1].volume;
   2372 	page->port[2].volume = arg->vol[2] & page2->port[2].volume;
   2373 	page->port[3].volume = arg->vol[3] & page2->port[3].volume;
   2374 
   2375 	page->port[0].channels = CHANNEL_0;
   2376 	page->port[1].channels = CHANNEL_1;
   2377 
   2378 	return (cd_mode_select(cd, SMS_PF, &data,
   2379 	    sizeof(struct scsi_mode_page_header) + page->pg_length,
   2380 	    flags, big));
   2381 }
   2382 
   2383 static int
   2384 cd_load_unload(struct cd_softc *cd, struct ioc_load_unload *args)
   2385 {
   2386 	struct scsipi_load_unload cmd;
   2387 
   2388 	memset(&cmd, 0, sizeof(cmd));
   2389 	cmd.opcode = LOAD_UNLOAD;
   2390 	cmd.options = args->options;    /* ioctl uses MMC values */
   2391 	cmd.slot = args->slot;
   2392 
   2393 	return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
   2394 	    CDRETRIES, 200000, NULL, 0));
   2395 }
   2396 
   2397 static int
   2398 cd_setblksize(struct cd_softc *cd)
   2399 {
   2400 	struct {
   2401 		union {
   2402 			struct scsi_mode_parameter_header_6 small;
   2403 			struct scsi_mode_parameter_header_10 big;
   2404 		} header;
   2405 		struct scsi_general_block_descriptor blk_desc;
   2406 	} data;
   2407 	int error;
   2408 	int big, bsize;
   2409 	struct scsi_general_block_descriptor *bdesc;
   2410 
   2411 	if ((error = cd_mode_sense(cd, 0, &data, sizeof(data.blk_desc), 0, 0,
   2412 	    &big)) != 0)
   2413 		return (error);
   2414 
   2415 	if (big) {
   2416 		bdesc = (void *)(&data.header.big + 1);
   2417 		bsize = _2btol(data.header.big.blk_desc_len);
   2418 	} else {
   2419 		bdesc = (void *)(&data.header.small + 1);
   2420 		bsize = data.header.small.blk_desc_len;
   2421 	}
   2422 
   2423 	if (bsize == 0) {
   2424 		printf("cd_setblksize: trying to change bsize, but no blk_desc\n");
   2425 
   2426 		return (EINVAL);
   2427 	}
   2428 	if (_3btol(bdesc->blklen) == 2048) {
   2429 		printf("cd_setblksize: trying to change bsize, but blk_desc is correct\n");
   2430 		return (EINVAL);
   2431 	}
   2432 
   2433 	_lto3b(2048, bdesc->blklen);
   2434 
   2435 	return (cd_mode_select(cd, SMS_PF, &data, sizeof(data.blk_desc), 0,
   2436 	    big));
   2437 }
   2438 
   2439 
   2440 static int
   2441 mmc_profile2class(uint16_t mmc_profile)
   2442 {
   2443 	switch (mmc_profile) {
   2444 	case 0x01 : /* SCSI discs */
   2445 	case 0x02 :
   2446 		/* this can't happen really, cd.c wouldn't have matched */
   2447 		return MMC_CLASS_DISC;
   2448 	case 0x03 : /* Magneto Optical with sector erase */
   2449 	case 0x04 : /* Magneto Optical write once        */
   2450 	case 0x05 : /* Advance Storage Magneto Optical   */
   2451 		return MMC_CLASS_MO;
   2452 	case 0x00 : /* Unknown MMC profile, can also be CD-ROM */
   2453 	case 0x08 : /* CD-ROM  */
   2454 	case 0x09 : /* CD-R    */
   2455 	case 0x0a : /* CD-RW   */
   2456 		return MMC_CLASS_CD;
   2457 	case 0x10 : /* DVD-ROM */
   2458 	case 0x11 : /* DVD-R   */
   2459 	case 0x12 : /* DVD-RAM */
   2460 	case 0x13 : /* DVD-RW restricted overwrite */
   2461 	case 0x14 : /* DVD-RW sequential */
   2462 	case 0x1a : /* DVD+RW  */
   2463 	case 0x1b : /* DVD+R   */
   2464 	case 0x2a : /* DVD+RW Dual layer */
   2465 	case 0x2b : /* DVD+R Dual layer */
   2466 	case 0x50 : /* HD DVD-ROM */
   2467 	case 0x51 : /* HD DVD-R   */
   2468 	case 0x52 : /* HD DVD-RW; DVD-RAM like */
   2469 		return MMC_CLASS_DVD;
   2470 	case 0x40 : /* BD-ROM  */
   2471 	case 0x41 : /* BD-R Sequential recording (SRM) */
   2472 	case 0x42 : /* BD-R Random Recording (RRM) */
   2473 	case 0x43 : /* BD-RE */
   2474 		return MMC_CLASS_BD;
   2475 	}
   2476 	return MMC_CLASS_UNKN;
   2477 }
   2478 
   2479 
   2480 /*
   2481  * Drive/media combination is reflected in a series of features that can
   2482  * either be current or dormant. We try to make sense out of them to create a
   2483  * set of easy to use flags that abstract the device/media capabilities.
   2484  */
   2485 
   2486 static void
   2487 mmc_process_feature(struct mmc_discinfo *mmc_discinfo,
   2488 		    uint16_t feature, int cur, uint8_t *rpos)
   2489 {
   2490 	uint32_t blockingnr;
   2491 	uint64_t flags;
   2492 
   2493 	if (cur == 1) {
   2494 		flags = mmc_discinfo->mmc_cur;
   2495 	} else {
   2496 		flags = mmc_discinfo->mmc_cap;
   2497 	}
   2498 
   2499 	switch (feature) {
   2500 	case 0x0010 :	/* random readable feature */
   2501 		blockingnr  =  rpos[5] | (rpos[4] << 8);
   2502 		if (blockingnr > 1)
   2503 			flags |= MMC_CAP_PACKET;
   2504 
   2505 		/* RW error page */
   2506 		break;
   2507 	case 0x0020 :	/* random writable feature */
   2508 		flags |= MMC_CAP_RECORDABLE;
   2509 		flags |= MMC_CAP_REWRITABLE;
   2510 		blockingnr  =  rpos[9] | (rpos[8] << 8);
   2511 		if (blockingnr > 1)
   2512 			flags |= MMC_CAP_PACKET;
   2513 		break;
   2514 	case 0x0021 :	/* incremental streaming write feature */
   2515 		flags |= MMC_CAP_RECORDABLE;
   2516 		flags |= MMC_CAP_SEQUENTIAL;
   2517 		if (cur)
   2518 			mmc_discinfo->link_block_penalty = rpos[4];
   2519 		if (rpos[2] & 1)
   2520 			flags |= MMC_CAP_ZEROLINKBLK;
   2521 		break;
   2522 	case 0x0022 : 	/* (obsolete) erase support feature */
   2523 		flags |= MMC_CAP_RECORDABLE;
   2524 		flags |= MMC_CAP_ERASABLE;
   2525 		break;
   2526 	case 0x0023 :	/* formatting media support feature */
   2527 		flags |= MMC_CAP_RECORDABLE;
   2528 		flags |= MMC_CAP_FORMATTABLE;
   2529 		break;
   2530 	case 0x0024 :	/* hardware assisted defect management feature */
   2531 		flags |= MMC_CAP_HW_DEFECTFREE;
   2532 		break;
   2533 	case 0x0025 : 	/* write once */
   2534 		flags |= MMC_CAP_RECORDABLE;
   2535 		break;
   2536 	case 0x0026 :	/* restricted overwrite feature */
   2537 		flags |= MMC_CAP_RECORDABLE;
   2538 		flags |= MMC_CAP_REWRITABLE;
   2539 		flags |= MMC_CAP_STRICTOVERWRITE;
   2540 		break;
   2541 	case 0x0028 :	/* MRW formatted media support feature */
   2542 		flags |= MMC_CAP_MRW;
   2543 		break;
   2544 	case 0x002b :	/* DVD+R read (and opt. write) support */
   2545 		flags |= MMC_CAP_SEQUENTIAL;
   2546 		if (rpos[0] & 1) /* write support */
   2547 			flags |= MMC_CAP_RECORDABLE;
   2548 		break;
   2549 	case 0x002c :	/* rigid restricted overwrite feature */
   2550 		flags |= MMC_CAP_RECORDABLE;
   2551 		flags |= MMC_CAP_REWRITABLE;
   2552 		flags |= MMC_CAP_STRICTOVERWRITE;
   2553 		if (rpos[0] & 1) /* blank bit */
   2554 			flags |= MMC_CAP_BLANKABLE;
   2555 		break;
   2556 	case 0x002d :	/* track at once recording feature */
   2557 		flags |= MMC_CAP_RECORDABLE;
   2558 		flags |= MMC_CAP_SEQUENTIAL;
   2559 		break;
   2560 	case 0x002f :	/* DVD-R/-RW write feature */
   2561 		flags |= MMC_CAP_RECORDABLE;
   2562 		if (rpos[0] & 2) /* DVD-RW bit */
   2563 			flags |= MMC_CAP_BLANKABLE;
   2564 		break;
   2565 	case 0x0038 :	/* BD-R SRM with pseudo overwrite */
   2566 		flags |= MMC_CAP_PSEUDOOVERWRITE;
   2567 		break;
   2568 	default :
   2569 		/* ignore */
   2570 		break;
   2571 	}
   2572 
   2573 	if (cur == 1) {
   2574 		mmc_discinfo->mmc_cur = flags;
   2575 	} else {
   2576 		mmc_discinfo->mmc_cap = flags;
   2577 	}
   2578 }
   2579 
   2580 static int
   2581 mmc_getdiscinfo_cdrom(struct scsipi_periph *periph,
   2582 		      struct mmc_discinfo *mmc_discinfo)
   2583 {
   2584 	struct scsipi_read_toc      gtoc_cmd;
   2585 	struct scsipi_toc_header   *toc_hdr;
   2586 	struct scsipi_toc_msinfo   *toc_msinfo;
   2587 	const uint32_t buffer_size = 1024;
   2588 	uint32_t req_size;
   2589 	uint8_t  *buffer;
   2590 	int error, flags;
   2591 
   2592 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
   2593 	/*
   2594 	 * Fabricate mmc_discinfo for CD-ROM. Some values are really `dont
   2595 	 * care' but others might be of interest to programs.
   2596 	 */
   2597 
   2598 	mmc_discinfo->disc_state	 = MMC_STATE_FULL;
   2599 	mmc_discinfo->last_session_state = MMC_STATE_FULL;
   2600 	mmc_discinfo->bg_format_state    = MMC_BGFSTATE_COMPLETED;
   2601 	mmc_discinfo->link_block_penalty = 7;	/* not relevant */
   2602 
   2603 	/* get number of sessions and first tracknr in last session */
   2604 	flags = XS_CTL_DATA_IN;
   2605 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
   2606 	gtoc_cmd.opcode      = READ_TOC;
   2607 	gtoc_cmd.addr_mode   = CD_MSF;		/* not relevant        */
   2608 	gtoc_cmd.resp_format = CD_TOC_MSINFO;	/* multisession info   */
   2609 	gtoc_cmd.from_track  = 0;		/* reserved, must be 0 */
   2610 	req_size = sizeof(*toc_hdr) + sizeof(*toc_msinfo);
   2611 	_lto2b(req_size, gtoc_cmd.data_len);
   2612 
   2613 	error = scsipi_command(periph,
   2614 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   2615 		(void *)buffer,    req_size,
   2616 		CDRETRIES, 30000, NULL, flags);
   2617 	if (error)
   2618 		goto out;
   2619 	toc_hdr    = (struct scsipi_toc_header *)  buffer;
   2620 	toc_msinfo = (struct scsipi_toc_msinfo *) (buffer + 4);
   2621 	mmc_discinfo->num_sessions = toc_hdr->last - toc_hdr->first + 1;
   2622 	mmc_discinfo->first_track  = toc_hdr->first;
   2623 	mmc_discinfo->first_track_last_session = toc_msinfo->tracknr;
   2624 
   2625 	/* get last track of last session */
   2626 	flags = XS_CTL_DATA_IN;
   2627 	gtoc_cmd.resp_format  = CD_TOC_FORM;	/* formatted toc */
   2628 	req_size = sizeof(*toc_hdr);
   2629 	_lto2b(req_size, gtoc_cmd.data_len);
   2630 
   2631 	error = scsipi_command(periph,
   2632 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   2633 		(void *)buffer,    req_size,
   2634 		CDRETRIES, 30000, NULL, flags);
   2635 	if (error)
   2636 		goto out;
   2637 	toc_hdr    = (struct scsipi_toc_header *) buffer;
   2638 	mmc_discinfo->last_track_last_session = toc_hdr->last;
   2639 	mmc_discinfo->num_tracks = toc_hdr->last - toc_hdr->first + 1;
   2640 
   2641 	/* TODO how to handle disc_barcode and disc_id */
   2642 	/* done */
   2643 
   2644 out:
   2645 	free(buffer, M_TEMP);
   2646 	return error;
   2647 }
   2648 
   2649 static int
   2650 mmc_getdiscinfo_dvdrom(struct scsipi_periph *periph,
   2651 		       struct mmc_discinfo *mmc_discinfo)
   2652 {
   2653 	struct scsipi_read_toc   gtoc_cmd;
   2654 	struct scsipi_toc_header toc_hdr;
   2655 	uint32_t req_size;
   2656 	int error, flags;
   2657 
   2658 	/*
   2659 	 * Fabricate mmc_discinfo for DVD-ROM. Some values are really `dont
   2660 	 * care' but others might be of interest to programs.
   2661 	 */
   2662 
   2663 	mmc_discinfo->disc_state	 = MMC_STATE_FULL;
   2664 	mmc_discinfo->last_session_state = MMC_STATE_FULL;
   2665 	mmc_discinfo->bg_format_state    = MMC_BGFSTATE_COMPLETED;
   2666 	mmc_discinfo->link_block_penalty = 16;	/* not relevant */
   2667 
   2668 	/* get number of sessions and first tracknr in last session */
   2669 	flags = XS_CTL_DATA_IN;
   2670 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
   2671 	gtoc_cmd.opcode      = READ_TOC;
   2672 	gtoc_cmd.addr_mode   = 0;		/* LBA                 */
   2673 	gtoc_cmd.resp_format = CD_TOC_FORM;	/* multisession info   */
   2674 	gtoc_cmd.from_track  = 1;		/* first track         */
   2675 	req_size = sizeof(toc_hdr);
   2676 	_lto2b(req_size, gtoc_cmd.data_len);
   2677 
   2678 	error = scsipi_command(periph,
   2679 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   2680 		(void *)&toc_hdr,  req_size,
   2681 		CDRETRIES, 30000, NULL, flags);
   2682 	if (error)
   2683 		return error;
   2684 
   2685 	/* DVD-ROM squashes the track/session space */
   2686 	mmc_discinfo->num_sessions = toc_hdr.last - toc_hdr.first + 1;
   2687 	mmc_discinfo->num_tracks   = mmc_discinfo->num_sessions;
   2688 	mmc_discinfo->first_track  = toc_hdr.first;
   2689 	mmc_discinfo->first_track_last_session = toc_hdr.last;
   2690 	mmc_discinfo->last_track_last_session  = toc_hdr.last;
   2691 
   2692 	/* TODO how to handle disc_barcode and disc_id */
   2693 	/* done */
   2694 	return 0;
   2695 }
   2696 
   2697 static int
   2698 mmc_getdiscinfo(struct scsipi_periph *periph,
   2699 		struct mmc_discinfo *mmc_discinfo)
   2700 {
   2701 	struct scsipi_get_configuration   gc_cmd;
   2702 	struct scsipi_get_conf_data      *gc;
   2703 	struct scsipi_get_conf_feature   *gcf;
   2704 	struct scsipi_read_discinfo       di_cmd;
   2705 	struct scsipi_read_discinfo_data  di __aligned(2);
   2706 	const uint32_t buffer_size = 0x200; /* XXX RPZ USB3 SCSI size issue */
   2707 	uint32_t pos;
   2708 	u_long   last_lba = 0;
   2709 	uint8_t  *buffer, *fpos;
   2710 	int feature, last_feature, features_len, feature_cur, feature_len;
   2711 	int lsb, msb, error, flags;
   2712 
   2713 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
   2714 
   2715 	/* initialise structure */
   2716 	memset(mmc_discinfo, 0, sizeof(struct mmc_discinfo));
   2717 	mmc_discinfo->mmc_profile = 0x00;	/* unknown */
   2718 	mmc_discinfo->mmc_class   = MMC_CLASS_UNKN;
   2719 	mmc_discinfo->mmc_cur     = 0;
   2720 	mmc_discinfo->mmc_cap     = 0;
   2721 	mmc_discinfo->link_block_penalty = 0;
   2722 
   2723 	/* determine mmc profile and class */
   2724 	flags = XS_CTL_DATA_IN;
   2725 	memset(&gc_cmd, 0, sizeof(gc_cmd));
   2726 	gc_cmd.opcode = GET_CONFIGURATION;
   2727 	_lto2b(GET_CONF_NO_FEATURES_LEN, gc_cmd.data_len);
   2728 
   2729 	gc = (struct scsipi_get_conf_data *) buffer;
   2730 
   2731 	error = scsipi_command(periph,
   2732 		(void *)&gc_cmd, sizeof(gc_cmd),
   2733 		(void *) gc,     GET_CONF_NO_FEATURES_LEN,
   2734 		CDRETRIES, 30000, NULL, flags);
   2735 	if (error)
   2736 		goto out;
   2737 
   2738 	mmc_discinfo->mmc_profile = _2btol(gc->mmc_profile);
   2739 	mmc_discinfo->mmc_class = mmc_profile2class(mmc_discinfo->mmc_profile);
   2740 
   2741 	/* assume 2048 sector size unless told otherwise */
   2742 	mmc_discinfo->sector_size = 2048;
   2743 	error = read_cd_capacity(periph, &mmc_discinfo->sector_size, &last_lba);
   2744 	if (error)
   2745 		goto out;
   2746 
   2747 	mmc_discinfo->last_possible_lba = (uint32_t) last_lba;
   2748 
   2749 	/* Read in all features to determine device capabilities */
   2750 	last_feature = feature = 0;
   2751 	do {
   2752 		/* determine mmc profile and class */
   2753 		flags = XS_CTL_DATA_IN;
   2754 		memset(&gc_cmd, 0, sizeof(gc_cmd));
   2755 		gc_cmd.opcode = GET_CONFIGURATION;
   2756 		_lto2b(last_feature, gc_cmd.start_at_feature);
   2757 		_lto2b(buffer_size, gc_cmd.data_len);
   2758 		memset(gc, 0, buffer_size);
   2759 
   2760 		error = scsipi_command(periph,
   2761 			(void *)&gc_cmd, sizeof(gc_cmd),
   2762 			(void *) gc,     buffer_size,
   2763 			CDRETRIES, 30000, NULL, flags);
   2764 		if (error) {
   2765 			/* ieeek... break out of loop... i dunno what to do */
   2766 			break;
   2767 		}
   2768 
   2769 		features_len = _4btol(gc->data_len);
   2770 		if (features_len < 4 || features_len > buffer_size)
   2771 			break;
   2772 
   2773 		pos  = 0;
   2774 		fpos = &gc->feature_desc[0];
   2775 		while (pos < features_len - 4) {
   2776 			gcf = (struct scsipi_get_conf_feature *) fpos;
   2777 
   2778 			feature     = _2btol(gcf->featurecode);
   2779 			feature_cur = gcf->flags & 1;
   2780 			feature_len = gcf->additional_length;
   2781 
   2782 			mmc_process_feature(mmc_discinfo,
   2783 					    feature, feature_cur,
   2784 					    gcf->feature_dependent);
   2785 
   2786 			last_feature = MAX(last_feature, feature);
   2787 #ifdef DIAGNOSTIC
   2788 			/* assert((feature_len & 3) == 0); */
   2789 			if ((feature_len & 3) != 0) {
   2790 				printf("feature %d having length %d\n",
   2791 					feature, feature_len);
   2792 			}
   2793 #endif
   2794 
   2795 			pos  += 4 + feature_len;
   2796 			fpos += 4 + feature_len;
   2797 		}
   2798 		/* unlikely to ever grow past our 1kb buffer */
   2799 	} while (features_len >= 0xffff);
   2800 
   2801 	/*
   2802 	 * Fixup CD-RW drives that are on crack.
   2803 	 *
   2804 	 * Some drives report the capability to incrementally write
   2805 	 * sequentially on CD-R(W) media...  nice, but this should not be
   2806 	 * active for a fixed packet formatted CD-RW media. Other report the
   2807 	 * ability of HW_DEFECTFREE even when the media is NOT MRW
   2808 	 * formatted....
   2809 	 */
   2810 	if (mmc_discinfo->mmc_profile == 0x0a) {
   2811 		if ((mmc_discinfo->mmc_cur & MMC_CAP_SEQUENTIAL) == 0)
   2812 			mmc_discinfo->mmc_cur |= MMC_CAP_STRICTOVERWRITE;
   2813 		if (mmc_discinfo->mmc_cur & MMC_CAP_STRICTOVERWRITE)
   2814 			mmc_discinfo->mmc_cur &= ~MMC_CAP_SEQUENTIAL;
   2815 		if (mmc_discinfo->mmc_cur & MMC_CAP_MRW) {
   2816 			mmc_discinfo->mmc_cur &= ~MMC_CAP_SEQUENTIAL;
   2817 			mmc_discinfo->mmc_cur &= ~MMC_CAP_STRICTOVERWRITE;
   2818 		} else {
   2819 			mmc_discinfo->mmc_cur &= ~MMC_CAP_HW_DEFECTFREE;
   2820 		}
   2821 	}
   2822 	if (mmc_discinfo->mmc_profile == 0x09) {
   2823 		mmc_discinfo->mmc_cur &= ~MMC_CAP_REWRITABLE;
   2824 	}
   2825 
   2826 #ifdef DEBUG
   2827 	printf("CD mmc %d, mmc_cur 0x%"PRIx64", mmc_cap 0x%"PRIx64"\n",
   2828 		mmc_discinfo->mmc_profile,
   2829 	 	mmc_discinfo->mmc_cur, mmc_discinfo->mmc_cap);
   2830 #endif
   2831 
   2832 	/* read in disc state and number of sessions and tracks */
   2833 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
   2834 	memset(&di_cmd, 0, sizeof(di_cmd));
   2835 	di_cmd.opcode = READ_DISCINFO;
   2836 	di_cmd.data_len[1] = READ_DISCINFO_BIGSIZE;
   2837 
   2838 	error = scsipi_command(periph,
   2839 		(void *)&di_cmd, sizeof(di_cmd),
   2840 		(void *)&di,     READ_DISCINFO_BIGSIZE,
   2841 		CDRETRIES, 30000, NULL, flags);
   2842 
   2843 	if (error) {
   2844 		/* discinfo call failed, emulate for cd-rom/dvd-rom */
   2845 		if (mmc_discinfo->mmc_profile == 0x08) /* CD-ROM */
   2846 			error = mmc_getdiscinfo_cdrom(periph, mmc_discinfo);
   2847 		else if (mmc_discinfo->mmc_profile == 0x10) /* DVD-ROM */
   2848 			error = mmc_getdiscinfo_dvdrom(periph, mmc_discinfo);
   2849 		else /* CD/DVD drive is violating specs */
   2850 			error = EIO;
   2851 		goto out;
   2852 	}
   2853 
   2854 	/* call went OK */
   2855 	mmc_discinfo->disc_state         =  di.disc_state & 3;
   2856 	mmc_discinfo->last_session_state = (di.disc_state >> 2) & 3;
   2857 	mmc_discinfo->bg_format_state    = (di.disc_state2 & 3);
   2858 
   2859 	lsb = di.num_sessions_lsb;
   2860 	msb = di.num_sessions_msb;
   2861 	mmc_discinfo->num_sessions = lsb | (msb << 8);
   2862 
   2863 	mmc_discinfo->first_track = di.first_track;
   2864 	lsb = di.first_track_last_session_lsb;
   2865 	msb = di.first_track_last_session_msb;
   2866 	mmc_discinfo->first_track_last_session = lsb | (msb << 8);
   2867 	lsb = di.last_track_last_session_lsb;
   2868 	msb = di.last_track_last_session_msb;
   2869 	mmc_discinfo->last_track_last_session  = lsb | (msb << 8);
   2870 
   2871 	mmc_discinfo->num_tracks = mmc_discinfo->last_track_last_session -
   2872 		mmc_discinfo->first_track + 1;
   2873 
   2874 	/* set misc. flags and parameters from this disc info */
   2875 	if (di.disc_state  &  16)
   2876 		mmc_discinfo->mmc_cur |= MMC_CAP_BLANKABLE;
   2877 
   2878 	if (di.disc_state2 & 128) {
   2879 		mmc_discinfo->disc_id = _4btol(di.discid);
   2880 		mmc_discinfo->disc_flags |= MMC_DFLAGS_DISCIDVALID;
   2881 	}
   2882 	if (di.disc_state2 &  64) {
   2883 		mmc_discinfo->disc_barcode = _8btol(di.disc_bar_code);
   2884 		mmc_discinfo->disc_flags |= MMC_DFLAGS_BARCODEVALID;
   2885 	}
   2886 	if (di.disc_state2 &  32)
   2887 		mmc_discinfo->disc_flags |= MMC_DFLAGS_UNRESTRICTED;
   2888 
   2889 	if (di.disc_state2 &  16) {
   2890 		mmc_discinfo->application_code = di.application_code;
   2891 		mmc_discinfo->disc_flags |= MMC_DFLAGS_APPCODEVALID;
   2892 	}
   2893 
   2894 	/* done */
   2895 
   2896 out:
   2897 	free(buffer, M_TEMP);
   2898 	return error;
   2899 }
   2900 
   2901 static int
   2902 mmc_gettrackinfo_cdrom(struct scsipi_periph *periph,
   2903 		       struct mmc_trackinfo *trackinfo)
   2904 {
   2905 	struct scsipi_read_toc            gtoc_cmd;
   2906 	struct scsipi_toc_header         *toc_hdr;
   2907 	struct scsipi_toc_rawtoc         *rawtoc;
   2908 	uint32_t track_start, track_size;
   2909 	uint32_t last_recorded, next_writable;
   2910 	uint32_t lba, next_track_start, lead_out;
   2911 	const uint32_t buffer_size = 4 * 1024;	/* worst case TOC estimate */
   2912 	uint8_t *buffer;
   2913 	uint8_t track_sessionnr, sessionnr, adr, tno, point;
   2914 	uint8_t control, tmin, tsec, tframe, pmin, psec, pframe;
   2915 	int size, req_size;
   2916 	int error, flags;
   2917 
   2918 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
   2919 
   2920 	/*
   2921 	 * Emulate read trackinfo for CD-ROM using the raw-TOC.
   2922 	 *
   2923 	 * Not all information is present and this presents a problem.  Track
   2924 	 * starts are known for each track but other values are deducted.
   2925 	 *
   2926 	 * For a complete overview of `magic' values used here, see the
   2927 	 * SCSI/ATAPI MMC documentation. Note that the `magic' values have no
   2928 	 * names, they are specified as numbers.
   2929 	 */
   2930 
   2931 	/* get raw toc to process, first header to check size */
   2932 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
   2933 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
   2934 	gtoc_cmd.opcode      = READ_TOC;
   2935 	gtoc_cmd.addr_mode   = CD_MSF;		/* not relevant     */
   2936 	gtoc_cmd.resp_format = CD_TOC_RAW;	/* raw toc          */
   2937 	gtoc_cmd.from_track  = 1;		/* first session    */
   2938 	req_size = sizeof(*toc_hdr);
   2939 	_lto2b(req_size, gtoc_cmd.data_len);
   2940 
   2941 	error = scsipi_command(periph,
   2942 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   2943 		(void *)buffer,    req_size,
   2944 		CDRETRIES, 30000, NULL, flags);
   2945 	if (error)
   2946 		goto out;
   2947 	toc_hdr = (struct scsipi_toc_header *) buffer;
   2948 	if (_2btol(toc_hdr->length) > buffer_size - 2) {
   2949 #ifdef DIAGNOSTIC
   2950 		printf("increase buffersize in mmc_readtrackinfo_cdrom\n");
   2951 #endif
   2952 		error = ENOBUFS;
   2953 		goto out;
   2954 	}
   2955 
   2956 	/* read in complete raw toc */
   2957 	req_size = _2btol(toc_hdr->length);
   2958 	req_size = 2*((req_size + 1) / 2);	/* for ATAPI */
   2959 	_lto2b(req_size, gtoc_cmd.data_len);
   2960 
   2961 	error = scsipi_command(periph,
   2962 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   2963 		(void *)buffer,    req_size,
   2964 		CDRETRIES, 30000, NULL, flags);
   2965 	if (error)
   2966 		goto out;
   2967 
   2968 	toc_hdr = (struct scsipi_toc_header *) buffer;
   2969 	rawtoc  = (struct scsipi_toc_rawtoc *) (buffer + 4);
   2970 
   2971 	track_start      = 0;
   2972 	track_size       = 0;
   2973 	last_recorded    = 0;
   2974 	next_writable    = 0;
   2975 	flags            = 0;
   2976 
   2977 	next_track_start = 0;
   2978 	track_sessionnr  = MAXTRACK;	/* by definition */
   2979 	lead_out         = 0;
   2980 
   2981 	size = req_size - sizeof(struct scsipi_toc_header) + 1;
   2982 	while (size > 0) {
   2983 		/* get track start and session end */
   2984 		tno       = rawtoc->tno;
   2985 		sessionnr = rawtoc->sessionnr;
   2986 		adr       = rawtoc->adrcontrol >> 4;
   2987 		control   = rawtoc->adrcontrol & 0xf;
   2988 		point     = rawtoc->point;
   2989 		tmin      = rawtoc->min;
   2990 		tsec      = rawtoc->sec;
   2991 		tframe    = rawtoc->frame;
   2992 		pmin      = rawtoc->pmin;
   2993 		psec      = rawtoc->psec;
   2994 		pframe    = rawtoc->pframe;
   2995 
   2996 		if (tno == 0 && sessionnr && adr == 1) {
   2997 			lba = hmsf2lba(0, pmin, psec, pframe);
   2998 			if (point == trackinfo->tracknr) {
   2999 				track_start = lba;
   3000 				track_sessionnr = sessionnr;
   3001 			}
   3002 			if (point == trackinfo->tracknr + 1) {
   3003 				/* estimate size */
   3004 				track_size = lba - track_start;
   3005 				next_track_start = lba;
   3006 			}
   3007 			if (point == 0xa2) {
   3008 				lead_out = lba;
   3009 			}
   3010 			if (point <= 0x63) {
   3011 				/* CD's ok, DVD are glued */
   3012 				/* last_tracknr = point; */
   3013 			}
   3014 			if (sessionnr == track_sessionnr) {
   3015 				last_recorded = lead_out;
   3016 			}
   3017 		}
   3018 		if (tno == 0 && sessionnr && adr == 5) {
   3019 			lba = hmsf2lba(0, tmin, tsec, tframe);
   3020 			if (sessionnr == track_sessionnr) {
   3021 				next_writable = lba;
   3022 			}
   3023 		}
   3024 
   3025 		if ((control & (3<<2)) == 4)		/* 01xxb */
   3026 			flags |= MMC_TRACKINFO_DATA;
   3027 		if ((control & (1<<2)) == 0) {		/* x0xxb */
   3028 			flags |= MMC_TRACKINFO_AUDIO;
   3029 			if (control & 1)		/* xxx1b */
   3030 				flags |= MMC_TRACKINFO_PRE_EMPH;
   3031 		}
   3032 
   3033 		rawtoc++;
   3034 		size -= sizeof(struct scsipi_toc_rawtoc);
   3035 	}
   3036 
   3037 	/* process found values; some voodoo */
   3038 	/* if no tracksize tracknr is the last of the disc */
   3039 	if ((track_size == 0) && last_recorded) {
   3040 		track_size = last_recorded - track_start;
   3041 	}
   3042 	/* if last_recorded < tracksize, tracksize is overestimated */
   3043 	if (last_recorded) {
   3044 		if (last_recorded - track_start <= track_size) {
   3045 			track_size = last_recorded - track_start;
   3046 			flags |= MMC_TRACKINFO_LRA_VALID;
   3047 		}
   3048 	}
   3049 	/* check if its a the last track of the sector */
   3050 	if (next_writable) {
   3051 		if (next_track_start > next_writable)
   3052 			flags |= MMC_TRACKINFO_NWA_VALID;
   3053 	}
   3054 
   3055 	/* no flag set -> no values */
   3056 	if ((flags & MMC_TRACKINFO_LRA_VALID) == 0)
   3057 		last_recorded = 0;
   3058 	if ((flags & MMC_TRACKINFO_NWA_VALID) == 0)
   3059 		next_writable = 0;
   3060 
   3061 	/* fill in */
   3062 	/* trackinfo->tracknr preserved */
   3063 	trackinfo->sessionnr  = track_sessionnr;
   3064 	trackinfo->track_mode = 7;	/* data, incremental  */
   3065 	trackinfo->data_mode  = 8;	/* 2048 bytes mode1   */
   3066 
   3067 	trackinfo->flags = flags;
   3068 	trackinfo->track_start   = track_start;
   3069 	trackinfo->next_writable = next_writable;
   3070 	trackinfo->free_blocks   = 0;
   3071 	trackinfo->packet_size   = 1;
   3072 	trackinfo->track_size    = track_size;
   3073 	trackinfo->last_recorded = last_recorded;
   3074 
   3075 out:
   3076 	free(buffer, M_TEMP);
   3077 	return error;
   3078 
   3079 }
   3080 
   3081 static int
   3082 mmc_gettrackinfo_dvdrom(struct scsipi_periph *periph,
   3083 			struct mmc_trackinfo *trackinfo)
   3084 {
   3085 	struct scsipi_read_toc            gtoc_cmd;
   3086 	struct scsipi_toc_header         *toc_hdr;
   3087 	struct scsipi_toc_formatted      *toc;
   3088 	uint32_t tracknr, track_start, track_size;
   3089 	uint32_t lba, lead_out;
   3090 	const uint32_t buffer_size = 4 * 1024;	/* worst case TOC estimate */
   3091 	uint8_t *buffer;
   3092 	uint8_t control, last_tracknr;
   3093 	int size, req_size;
   3094 	int error, flags;
   3095 
   3096 
   3097 	buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
   3098 	/*
   3099 	 * Emulate read trackinfo for DVD-ROM. We can't use the raw-TOC as the
   3100 	 * CD-ROM emulation uses since the specification tells us that no such
   3101 	 * thing is defined for DVD's. The reason for this is due to the large
   3102 	 * number of tracks and that would clash with the `magic' values. This
   3103 	 * suxs.
   3104 	 *
   3105 	 * Not all information is present and this presents a problem.
   3106 	 * Track starts are known for each track but other values are
   3107 	 * deducted.
   3108 	 */
   3109 
   3110 	/* get formatted toc to process, first header to check size */
   3111 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
   3112 	memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
   3113 	gtoc_cmd.opcode      = READ_TOC;
   3114 	gtoc_cmd.addr_mode   = 0;		/* lba's please     */
   3115 	gtoc_cmd.resp_format = CD_TOC_FORM;	/* formatted toc    */
   3116 	gtoc_cmd.from_track  = 1;		/* first track      */
   3117 	req_size = sizeof(*toc_hdr);
   3118 	_lto2b(req_size, gtoc_cmd.data_len);
   3119 
   3120 	error = scsipi_command(periph,
   3121 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   3122 		(void *)buffer,    req_size,
   3123 		CDRETRIES, 30000, NULL, flags);
   3124 	if (error)
   3125 		goto out;
   3126 	toc_hdr = (struct scsipi_toc_header *) buffer;
   3127 	if (_2btol(toc_hdr->length) > buffer_size - 2) {
   3128 #ifdef DIAGNOSTIC
   3129 		printf("increase buffersize in mmc_readtrackinfo_dvdrom\n");
   3130 #endif
   3131 		error = ENOBUFS;
   3132 		goto out;
   3133 	}
   3134 
   3135 	/* read in complete formatted toc */
   3136 	req_size = _2btol(toc_hdr->length);
   3137 	_lto2b(req_size, gtoc_cmd.data_len);
   3138 
   3139 	error = scsipi_command(periph,
   3140 		(void *)&gtoc_cmd, sizeof(gtoc_cmd),
   3141 		(void *)buffer,    req_size,
   3142 		CDRETRIES, 30000, NULL, flags);
   3143 	if (error)
   3144 		goto out;
   3145 
   3146 	toc_hdr = (struct scsipi_toc_header *)     buffer;
   3147 	toc     = (struct scsipi_toc_formatted *) (buffer + 4);
   3148 
   3149 	/* as in read disc info, all sessions are converted to tracks      */
   3150 	/* track 1..  -> offsets, sizes can be (roughly) estimated (16 ECC) */
   3151 	/* last track -> we got the size from the lead-out                 */
   3152 
   3153 	tracknr      = 0;
   3154 	last_tracknr = toc_hdr->last;
   3155 	track_start  = 0;
   3156 	track_size   = 0;
   3157 	lead_out     = 0;
   3158 	flags        = 0;
   3159 
   3160 	size = req_size - sizeof(struct scsipi_toc_header) + 1;
   3161 	while (size > 0) {
   3162 		/* remember, DVD-ROM: tracknr == sessionnr */
   3163 		lba     = _4btol(toc->msf_lba);
   3164 		tracknr = toc->tracknr;
   3165 		control = toc->adrcontrol & 0xf;
   3166 
   3167 		if (trackinfo->tracknr == tracknr) {
   3168 			track_start = lba;
   3169 		}
   3170 		if (trackinfo->tracknr == tracknr+1) {
   3171 			track_size  = lba - track_start;
   3172 			track_size -= 16;	/* link block ? */
   3173 		}
   3174 		if (tracknr == 0xAA) {
   3175 			lead_out = lba;
   3176 		}
   3177 
   3178 		if ((control & (3<<2)) == 4)		/* 01xxb */
   3179 			flags |= MMC_TRACKINFO_DATA;
   3180 		if ((control & (1<<2)) == 0) {		/* x0xxb */
   3181 			flags |= MMC_TRACKINFO_AUDIO;
   3182 			if (control & (1<<3))		/* 10xxb */
   3183 				flags |= MMC_TRACKINFO_AUDIO_4CHAN;
   3184 			if (control & 1)		/* xxx1b */
   3185 				flags |= MMC_TRACKINFO_PRE_EMPH;
   3186 		}
   3187 
   3188 		toc++;
   3189 		size -= sizeof(struct scsipi_toc_formatted);
   3190 	}
   3191 	if (trackinfo->tracknr == last_tracknr) {
   3192 		track_size = lead_out - track_start;
   3193 	}
   3194 
   3195 	/* fill in */
   3196 	/* trackinfo->tracknr preserved */
   3197 	trackinfo->sessionnr  = trackinfo->tracknr;
   3198 	trackinfo->track_mode = 0;	/* unknown */
   3199 	trackinfo->data_mode  = 8;	/* 2048 bytes mode1   */
   3200 
   3201 	trackinfo->flags         = flags;
   3202 	trackinfo->track_start   = track_start;
   3203 	trackinfo->next_writable = 0;
   3204 	trackinfo->free_blocks   = 0;
   3205 	trackinfo->packet_size   = 16;	/* standard length 16 blocks ECC */
   3206 	trackinfo->track_size    = track_size;
   3207 	trackinfo->last_recorded = 0;
   3208 
   3209 out:
   3210 	free(buffer, M_TEMP);
   3211 	return error;
   3212 }
   3213 
   3214 static int
   3215 mmc_gettrackinfo(struct scsipi_periph *periph,
   3216 		 struct mmc_trackinfo *trackinfo)
   3217 {
   3218 	struct scsipi_read_trackinfo      ti_cmd;
   3219 	struct scsipi_read_trackinfo_data ti __aligned(2);
   3220 	struct scsipi_get_configuration   gc_cmd;
   3221 	struct scsipi_get_conf_data       gc __aligned(2);
   3222 	int error, flags;
   3223 	int mmc_profile;
   3224 
   3225 	/* set up SCSI call with track number from trackinfo.tracknr */
   3226 	flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
   3227 	memset(&ti_cmd, 0, sizeof(ti_cmd));
   3228 	ti_cmd.opcode    = READ_TRACKINFO;
   3229 	ti_cmd.addr_type = READ_TRACKINFO_ADDR_TRACK;
   3230 	ti_cmd.data_len[1] = READ_TRACKINFO_RETURNSIZE;
   3231 
   3232 	/* trackinfo.tracknr contains number of tracks to query */
   3233 	_lto4b(trackinfo->tracknr, ti_cmd.address);
   3234 	error = scsipi_command(periph,
   3235 		(void *)&ti_cmd, sizeof(ti_cmd),
   3236 		(void *)&ti,     READ_TRACKINFO_RETURNSIZE,
   3237 		CDRETRIES, 30000, NULL, flags);
   3238 
   3239 	if (error) {
   3240 		/* trackinfo call failed, emulate for cd-rom/dvd-rom */
   3241 		/* first determine mmc profile */
   3242 		flags = XS_CTL_DATA_IN;
   3243 		memset(&gc_cmd, 0, sizeof(gc_cmd));
   3244 		gc_cmd.opcode = GET_CONFIGURATION;
   3245 		_lto2b(GET_CONF_NO_FEATURES_LEN, gc_cmd.data_len);
   3246 
   3247 		error = scsipi_command(periph,
   3248 			(void *)&gc_cmd, sizeof(gc_cmd),
   3249 			(void *)&gc,     GET_CONF_NO_FEATURES_LEN,
   3250 			CDRETRIES, 30000, NULL, flags);
   3251 		if (error)
   3252 			return error;
   3253 		mmc_profile = _2btol(gc.mmc_profile);
   3254 
   3255 		/* choose emulation */
   3256 		if (mmc_profile == 0x08) /* CD-ROM */
   3257 			return mmc_gettrackinfo_cdrom(periph, trackinfo);
   3258 		if (mmc_profile == 0x10) /* DVD-ROM */
   3259 			return mmc_gettrackinfo_dvdrom(periph, trackinfo);
   3260 		/* CD/DVD drive is violating specs */
   3261 		return EIO;
   3262 	}
   3263 
   3264 	/* (re)initialise structure */
   3265 	memset(trackinfo, 0, sizeof(struct mmc_trackinfo));
   3266 
   3267 	/* account for short returns screwing up track and session msb */
   3268 	if ((ti.data_len[1] | (ti.data_len[0] << 8)) <= 32) {
   3269 		ti.track_msb   = 0;
   3270 		ti.session_msb = 0;
   3271 	}
   3272 
   3273 	trackinfo->tracknr    = ti.track_lsb   | (ti.track_msb   << 8);
   3274 	trackinfo->sessionnr  = ti.session_lsb | (ti.session_msb << 8);
   3275 	trackinfo->track_mode = ti.track_info_1 & 0xf;
   3276 	trackinfo->data_mode  = ti.track_info_2 & 0xf;
   3277 
   3278 	flags = 0;
   3279 	if (ti.track_info_1 & 0x10)
   3280 		flags |= MMC_TRACKINFO_COPY;
   3281 	if (ti.track_info_1 & 0x20)
   3282 		flags |= MMC_TRACKINFO_DAMAGED;
   3283 	if (ti.track_info_2 & 0x10)
   3284 		flags |= MMC_TRACKINFO_FIXED_PACKET;
   3285 	if (ti.track_info_2 & 0x20)
   3286 		flags |= MMC_TRACKINFO_INCREMENTAL;
   3287 	if (ti.track_info_2 & 0x40)
   3288 		flags |= MMC_TRACKINFO_BLANK;
   3289 	if (ti.track_info_2 & 0x80)
   3290 		flags |= MMC_TRACKINFO_RESERVED;
   3291 	if (ti.data_valid   & 0x01)
   3292 		flags |= MMC_TRACKINFO_NWA_VALID;
   3293 	if (ti.data_valid   & 0x02)
   3294 		flags |= MMC_TRACKINFO_LRA_VALID;
   3295 	if ((trackinfo->track_mode & (3<<2)) == 4)		/* 01xxb */
   3296 		flags |= MMC_TRACKINFO_DATA;
   3297 	if ((trackinfo->track_mode & (1<<2)) == 0) {		/* x0xxb */
   3298 		flags |= MMC_TRACKINFO_AUDIO;
   3299 		if (trackinfo->track_mode & (1<<3))		/* 10xxb */
   3300 			flags |= MMC_TRACKINFO_AUDIO_4CHAN;
   3301 		if (trackinfo->track_mode & 1)			/* xxx1b */
   3302 			flags |= MMC_TRACKINFO_PRE_EMPH;
   3303 	}
   3304 
   3305 	trackinfo->flags = flags;
   3306 	trackinfo->track_start    = _4btol(ti.track_start);
   3307 	trackinfo->next_writable  = _4btol(ti.next_writable);
   3308 	trackinfo->free_blocks    = _4btol(ti.free_blocks);
   3309 	trackinfo->packet_size    = _4btol(ti.packet_size);
   3310 	trackinfo->track_size     = _4btol(ti.track_size);
   3311 	trackinfo->last_recorded  = _4btol(ti.last_recorded);
   3312 
   3313 	return 0;
   3314 }
   3315 
   3316 static int
   3317 mmc_doclose(struct scsipi_periph *periph, int param, int func) {
   3318 	struct scsipi_close_tracksession close_cmd;
   3319 	int error, flags;
   3320 
   3321 	/* set up SCSI call with track number */
   3322 	flags = XS_CTL_DATA_OUT;
   3323 	memset(&close_cmd, 0, sizeof(close_cmd));
   3324 	close_cmd.opcode    = CLOSE_TRACKSESSION;
   3325 	close_cmd.function  = func;
   3326 	_lto2b(param, close_cmd.tracksessionnr);
   3327 
   3328 	error = scsipi_command(periph,
   3329 		(void *) &close_cmd, sizeof(close_cmd),
   3330 		NULL, 0,
   3331 		CDRETRIES, 120000, NULL, flags);
   3332 
   3333 	return error;
   3334 }
   3335 
   3336 static int
   3337 mmc_do_closetrack(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3338 {
   3339 	int mmc_profile = mmc_op->mmc_profile;
   3340 
   3341 	switch (mmc_profile) {
   3342 	case 0x12 : /* DVD-RAM */
   3343 	case 0x1a : /* DVD+RW  */
   3344 	case 0x2a : /* DVD+RW Dual layer */
   3345 	case 0x42 : /* BD-R Random Recording (RRM) */
   3346 	case 0x43 : /* BD-RE */
   3347 	case 0x52 : /* HD DVD-RW ; DVD-RAM like */
   3348 		return EINVAL;
   3349 	}
   3350 
   3351 	return mmc_doclose(periph, mmc_op->tracknr, 1);
   3352 }
   3353 
   3354 static int
   3355 mmc_do_close_or_finalise(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3356 {
   3357 	uint8_t blob[MS5LEN], *page5;
   3358 	int mmc_profile = mmc_op->mmc_profile;
   3359 	int func, close, flags;
   3360 	int error;
   3361 
   3362 	close = (mmc_op->operation == MMC_OP_CLOSESESSION);
   3363 
   3364 	switch (mmc_profile) {
   3365 	case 0x09 : /* CD-R       */
   3366 	case 0x0a : /* CD-RW      */
   3367 		/* Special case : need to update MS field in mode page 5 */
   3368 		memset(blob, 0, sizeof(blob));
   3369 		page5 = blob+8;
   3370 
   3371 		flags = XS_CTL_DATA_IN;
   3372 		error = scsipi_mode_sense_big(periph, SMS_PF, 5,
   3373 		    (void *)blob, sizeof(blob), flags, CDRETRIES, 20000);
   3374 		if (error)
   3375 			return error;
   3376 
   3377 		/* set multi session field when closing a session only */
   3378 		page5[3] &= 63;
   3379 		if (close)
   3380 			page5[3] |= 3 << 6;
   3381 
   3382 		flags = XS_CTL_DATA_OUT;
   3383 		error = scsipi_mode_select_big(periph, SMS_PF,
   3384 		    (void *)blob, sizeof(blob), flags, CDRETRIES, 20000);
   3385 		if (error)
   3386 			return error;
   3387 		/* and use function 2 */
   3388 		func = 2;
   3389 		break;
   3390 	case 0x11 : /* DVD-R (DL) */
   3391 	case 0x13 : /* DVD-RW restricted overwrite */
   3392 	case 0x14 : /* DVD-RW sequential */
   3393 		func = close ? 2 : 3;
   3394 		break;
   3395 	case 0x1b : /* DVD+R   */
   3396 	case 0x2b : /* DVD+R Dual layer */
   3397 	case 0x51 : /* HD DVD-R   */
   3398 	case 0x41 : /* BD-R Sequential recording (SRM) */
   3399 		func = close ? 2 : 6;
   3400 		break;
   3401 	case 0x12 : /* DVD-RAM */
   3402 	case 0x1a : /* DVD+RW  */
   3403 	case 0x2a : /* DVD+RW Dual layer */
   3404 	case 0x42 : /* BD-R Random Recording (RRM) */
   3405 	case 0x43 : /* BD-RE */
   3406 	case 0x52 : /* HD DVD-RW; DVD-RAM like */
   3407 		return EINVAL;
   3408 	default:
   3409 		printf("MMC close/finalise passed wrong device type! (%d)\n",
   3410 		    mmc_profile);
   3411 		return EINVAL;
   3412 	}
   3413 
   3414 	return mmc_doclose(periph, mmc_op->sessionnr, func);
   3415 }
   3416 
   3417 static int
   3418 mmc_do_reserve_track(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3419 {
   3420 	struct scsipi_reserve_track reserve_cmd;
   3421 	uint32_t extent;
   3422 	int error, flags;
   3423 
   3424 	/* TODO make mmc safeguards? */
   3425 	extent = mmc_op->extent;
   3426 	/* TODO min/max support? */
   3427 
   3428 	/* set up SCSI call with requested space */
   3429 	flags = XS_CTL_DATA_OUT;
   3430 	memset(&reserve_cmd, 0, sizeof(reserve_cmd));
   3431 	reserve_cmd.opcode = RESERVE_TRACK;
   3432 	_lto4b(extent, reserve_cmd.reservation_size);
   3433 
   3434 	error = scsipi_command(periph,
   3435 		(void *) &reserve_cmd, sizeof(reserve_cmd),
   3436 		NULL, 0,
   3437 		CDRETRIES, 30000, NULL, flags);
   3438 
   3439 	return error;
   3440 }
   3441 
   3442 static int
   3443 mmc_do_reserve_track_nwa(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3444 {
   3445 	/* XXX assumes that NWA given is valid */
   3446 	switch (mmc_op->mmc_profile) {
   3447 	case 0x09 : /* CD-R       */
   3448 		/* XXX unknown boundary checks XXX */
   3449 		if (mmc_op->extent <= 152)
   3450 			return EINVAL;
   3451 		/* CD-R takes 152 sectors to close track */
   3452 		mmc_op->extent -= 152;
   3453 		return mmc_do_reserve_track(periph, mmc_op);
   3454 	case 0x11 : /* DVD-R (DL) */
   3455 	case 0x1b : /* DVD+R   */
   3456 	case 0x2b : /* DVD+R Dual layer */
   3457 		if (mmc_op->extent % 16)
   3458 			return EINVAL;
   3459 		/* upto one ECC block of 16 sectors lost */
   3460 		mmc_op->extent -= 16;
   3461 		return mmc_do_reserve_track(periph, mmc_op);
   3462 	case 0x41 : /* BD-R Sequential recording (SRM) */
   3463 	case 0x51 : /* HD DVD-R   */
   3464 		if (mmc_op->extent % 32)
   3465 			return EINVAL;
   3466 		/* one ECC block of 32 sectors lost (AFAIK) */
   3467 		mmc_op->extent -= 32;
   3468 		return mmc_do_reserve_track(periph, mmc_op);
   3469 	}
   3470 
   3471 	/* unknown behaviour or invalid disc type */
   3472 	return EINVAL;
   3473 }
   3474 
   3475 static int
   3476 mmc_do_repair_track(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3477 {
   3478 	struct scsipi_repair_track repair_cmd;
   3479 	int error, flags;
   3480 
   3481 	/* TODO make mmc safeguards? */
   3482 
   3483 	/* set up SCSI call with track number */
   3484 	flags = XS_CTL_DATA_OUT;
   3485 	memset(&repair_cmd, 0, sizeof(repair_cmd));
   3486 	repair_cmd.opcode = REPAIR_TRACK;
   3487 	_lto2b(mmc_op->tracknr, repair_cmd.tracknr);
   3488 
   3489 	error = scsipi_command(periph,
   3490 		(void *) &repair_cmd, sizeof(repair_cmd),
   3491 		NULL, 0,
   3492 		CDRETRIES, 30000, NULL, flags);
   3493 
   3494 	return error;
   3495 }
   3496 
   3497 static int
   3498 mmc_do_op(struct scsipi_periph *periph, struct mmc_op *mmc_op)
   3499 {
   3500 	/* guard operation value */
   3501 	if (mmc_op->operation < 1 || mmc_op->operation > MMC_OP_MAX)
   3502 		return EINVAL;
   3503 
   3504 	/* synchronise cache is special since it doesn't rely on mmc_profile */
   3505 	if (mmc_op->operation == MMC_OP_SYNCHRONISECACHE)
   3506 		return cdcachesync(periph, 0);
   3507 
   3508 	/* zero mmc_profile means unknown disc so operations are not defined */
   3509 	if (mmc_op->mmc_profile == 0) {
   3510 #ifdef DEBUG
   3511 		printf("mmc_do_op called with mmc_profile = 0\n");
   3512 #endif
   3513 		return EINVAL;
   3514 	}
   3515 
   3516 	/* do the operations */
   3517 	switch (mmc_op->operation) {
   3518 	case MMC_OP_CLOSETRACK   :
   3519 		return mmc_do_closetrack(periph, mmc_op);
   3520 	case MMC_OP_CLOSESESSION :
   3521 	case MMC_OP_FINALISEDISC :
   3522 		return mmc_do_close_or_finalise(periph, mmc_op);
   3523 	case MMC_OP_RESERVETRACK :
   3524 		return mmc_do_reserve_track(periph, mmc_op);
   3525 	case MMC_OP_RESERVETRACK_NWA :
   3526 		return mmc_do_reserve_track_nwa(periph, mmc_op);
   3527 	case MMC_OP_REPAIRTRACK  :
   3528 		return mmc_do_repair_track(periph, mmc_op);
   3529 	case MMC_OP_UNCLOSELASTSESSION :
   3530 		/* TODO unclose last session support */
   3531 		return EINVAL;
   3532 	default :
   3533 		printf("mmc_do_op: unhandled operation %d\n", mmc_op->operation);
   3534 	}
   3535 
   3536 	return EINVAL;
   3537 }
   3538 
   3539 static int
   3540 mmc_setup_writeparams(struct scsipi_periph *periph,
   3541 		      struct mmc_writeparams *mmc_writeparams)
   3542 {
   3543 	struct mmc_trackinfo trackinfo;
   3544 	uint8_t blob[MS5LEN];
   3545 	uint8_t *page5;
   3546 	int flags, error;
   3547 	int track_mode, data_mode;
   3548 
   3549 	/* setup mode page 5 for CD only */
   3550 	if (mmc_writeparams->mmc_class != MMC_CLASS_CD)
   3551 		return 0;
   3552 
   3553 	memset(blob, 0, sizeof(blob));
   3554 	page5 = blob+8;
   3555 
   3556 	/* read mode page 5 (with header) */
   3557 	flags = XS_CTL_DATA_IN;
   3558 	error = scsipi_mode_sense_big(periph, SMS_PF, 5, (void *)blob,
   3559 	    sizeof(blob), flags, CDRETRIES, 20000);
   3560 	if (error)
   3561 		return error;
   3562 
   3563 	/* set page length for reassurance */
   3564 	page5[1] = P5LEN;	/* page length */
   3565 
   3566 	/* write type packet/incremental */
   3567 	page5[2] &= 0xf0;
   3568 
   3569 	/* set specified mode parameters */
   3570 	track_mode = mmc_writeparams->track_mode;
   3571 	data_mode  = mmc_writeparams->data_mode;
   3572 	if (track_mode <= 0 || track_mode > 15)
   3573 		return EINVAL;
   3574 	if (data_mode < 1 || data_mode > 2)
   3575 		return EINVAL;
   3576 
   3577 	/* if a tracknr is passed, setup according to the track */
   3578 	if (mmc_writeparams->tracknr > 0) {
   3579 		trackinfo.tracknr = mmc_writeparams->tracknr;
   3580 		error = mmc_gettrackinfo(periph, &trackinfo);
   3581 		if (error)
   3582 			return error;
   3583 		if ((trackinfo.flags & MMC_TRACKINFO_BLANK) == 0) {
   3584 			track_mode = trackinfo.track_mode;
   3585 			data_mode  = trackinfo.data_mode;
   3586 		}
   3587 		mmc_writeparams->blockingnr = trackinfo.packet_size;
   3588 	}
   3589 
   3590 	/* copy track mode and data mode from trackinfo */
   3591 	page5[3] &= 16;		/* keep only `Copy' bit */
   3592 	page5[3] |= (3 << 6) | track_mode;
   3593 	page5[4] &= 0xf0;	/* wipe data block type */
   3594 	if (data_mode == 1) {
   3595 		/* select ISO mode 1 (CD only) */
   3596 		page5[4] |= 8;
   3597 		/* select session format normal disc (CD only) */
   3598 		page5[8] = 0;
   3599 	} else {
   3600 		/* select ISO mode 2; XA form 1 (CD only) */
   3601 		page5[4] |= 10;
   3602 		/* select session format CD-ROM XA disc (CD only) */
   3603 		page5[8] = 0x20;
   3604 	}
   3605 	if (mmc_writeparams->mmc_cur & MMC_CAP_SEQUENTIAL) {
   3606 		if (mmc_writeparams->mmc_cur & MMC_CAP_ZEROLINKBLK) {
   3607 			/* set BUFE buffer underrun protection */
   3608 			page5[2] |= 1<<6;
   3609 		}
   3610 		/* allow for multi session */
   3611 		page5[3] |= 3 << 6;
   3612 	} else {
   3613 		/* select fixed packets */
   3614 		page5[3] |= 1<<5;
   3615 		_lto4b(mmc_writeparams->blockingnr, &(page5[10]));
   3616 	}
   3617 
   3618 	/* write out updated mode page 5 (with header) */
   3619 	flags = XS_CTL_DATA_OUT;
   3620 	error = scsipi_mode_select_big(periph, SMS_PF, (void *)blob,
   3621 	    sizeof(blob), flags, CDRETRIES, 20000);
   3622 	if (error)
   3623 		return error;
   3624 
   3625 	return 0;
   3626 }
   3627 
   3628 static void
   3629 cd_set_geometry(struct cd_softc *cd)
   3630 {
   3631 	struct dk_softc *dksc = &cd->sc_dksc;
   3632 	struct disk_geom *dg = &dksc->sc_dkdev.dk_geom;
   3633 
   3634 	memset(dg, 0, sizeof(*dg));
   3635 
   3636 	dg->dg_secperunit = cd->params.disksize;
   3637 	dg->dg_secsize = cd->params.blksize;
   3638 	dg->dg_nsectors = 100;
   3639 	dg->dg_ntracks = 1;
   3640 
   3641 	disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, NULL);
   3642 }
   3643