* Copyright (c) 1998, 2001, 2003, 2004, 2005, 2008 The NetBSD Foundation,

/* $NetBSD: cd.c,v 1.356 2024/12/01 20:23:45 andvar Exp $ */

/*-
* Copyright (c) 1998, 2001, 2003, 2004, 2005, 2008 The NetBSD Foundation,
* Inc. All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* MMC framework implemented and contributed to the NetBSD Foundation by
* Reinoud Zandijk.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

/*
* Originally written by Julian Elischer ([email protected])
* for TRW Financial Systems for use under the MACH(2.5) operating system.
*
* TRW Financial Systems, in accordance with their agreement with Carnegie
* Mellon University, makes this software available to CMU to distribute
* or use in any manner that they see fit as long as this message is kept with
* the software. For this reason TFS also grants any other persons or
* organisations permission to use or modify this software.
*
* TFS supplies this software to be publicly redistributed
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* Ported to run under 386BSD by Julian Elischer ([email protected]) Sept 1992
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cd.c,v 1.356 2024/12/01 20:23:45 andvar Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/buf.h>
#include <sys/bufq.h>
#include <sys/uio.h>
#include <sys/malloc.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/disklabel.h>
#include <sys/disk.h>
#include <sys/cdio.h>
#include <sys/dvdio.h>
#include <sys/scsiio.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/vnode.h>
#include <sys/rndsource.h>

#include <dev/scsipi/scsi_spc.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsipi_cd.h>
#include <dev/scsipi/scsipi_disk.h> /* rw_big and start_stop come */
#include <dev/scsipi/scsi_all.h>
/* from there */
#include <dev/scsipi/scsi_disk.h> /* rw comes from there */
#include <dev/scsipi/scsipiconf.h>
#include <dev/scsipi/scsipi_base.h>
#include <dev/scsipi/cdvar.h>

#include <prop/proplib.h>

#define CDUNIT(z) DISKUNIT(z)
#define CDPART(z) DISKPART(z)
#define CDMINOR(unit, part) DISKMINOR(unit, part)
#define MAKECDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part)

#define MAXTRACK 99
#define CD_BLOCK_OFFSET 150
#define CD_FRAMES 75
#define CD_SECS 60

#define CD_TOC_FORM 0 /* formatted TOC, exposed to userland */
#define CD_TOC_MSINFO 1 /* multi-session info */
#define CD_TOC_RAW 2 /* raw TOC as on disc, unprocessed */
#define CD_TOC_PMA 3 /* PMA, used as intermediate (rare use) */
#define CD_TOC_ATIP 4 /* pressed space of recordable */
#define CD_TOC_CDTEXT 5 /* special CD-TEXT, rarely used */

#define P5LEN 0x32
#define MS5LEN (P5LEN + 8 + 2)

struct cd_formatted_toc {
struct ioc_toc_header header;
struct cd_toc_entry entries[MAXTRACK+1]; /* One extra for the */
/* leadout */
};

struct cdbounce {
struct buf *obp; /* original buf */
struct buf *lbp; /* first buffer */
struct buf *rbp; /* second buffer */
int lerr; /* error returned for first buffer */
int rerr; /* error returned for second buffer */
int head; /* bytes skipped at the start */
int lcount; /* bytes copied to first buffer */
int rcount; /* bytes copied to second buffer */
};

static void cdstart(struct scsipi_periph *);
static void cdrestart(void *);
static void cdminphys(struct buf *);
static void cddone(struct scsipi_xfer *, int);
static int cd_interpret_sense(struct scsipi_xfer *);
static int cd_diskstart(device_t, struct buf *);
static void cd_iosize(device_t, int *);
static int cd_lastclose(device_t);
static int cd_firstopen(device_t, dev_t, int, int);
static void cd_label(device_t, struct disklabel *);
static u_long cd_size(struct cd_softc *, int);
static int cd_play(struct cd_softc *, int, int);
static int cd_play_tracks(struct cd_softc *, struct cd_formatted_toc *,
int, int, int, int);
static int cd_play_msf(struct cd_softc *, int, int, int, int, int, int);
static int cd_pause(struct cd_softc *, int);
static int cd_reset(struct cd_softc *);
static int cd_read_subchannel(struct cd_softc *, int, int, int,
struct cd_sub_channel_info *, int, int);
static int cd_read_toc(struct cd_softc *, int, int, int,
struct cd_formatted_toc *, int, int, int);
static int cd_get_parms(struct cd_softc *, int);
static int cd_load_toc(struct cd_softc *, int, struct cd_formatted_toc *, int);
static int cdreadmsaddr(struct cd_softc *, struct cd_formatted_toc *,int *);
static int cdcachesync(struct scsipi_periph *periph, int flags);

static int dvd_auth(struct cd_softc *, dvd_authinfo *);
static int dvd_read_physical(struct cd_softc *, dvd_struct *);
static int dvd_read_copyright(struct cd_softc *, dvd_struct *);
static int dvd_read_disckey(struct cd_softc *, dvd_struct *);
static int dvd_read_bca(struct cd_softc *, dvd_struct *);
static int dvd_read_manufact(struct cd_softc *, dvd_struct *);
static int dvd_read_struct(struct cd_softc *, dvd_struct *);

static int cd_mode_sense(struct cd_softc *, u_int8_t, void *, size_t, int,
int, int *);
static int cd_mode_select(struct cd_softc *, u_int8_t, void *, size_t,
int, int);
static int cd_setchan(struct cd_softc *, int, int, int, int, int);
static int cd_getvol(struct cd_softc *, struct ioc_vol *, int);
static int cd_setvol(struct cd_softc *, const struct ioc_vol *, int);
static int cd_set_pa_immed(struct cd_softc *, int);
static int cd_load_unload(struct cd_softc *, struct ioc_load_unload *);
static int cd_setblksize(struct cd_softc *);

static int cdmatch(device_t, cfdata_t, void *);
static void cdattach(device_t, device_t, void *);
static int cddetach(device_t, int);

static int mmc_getdiscinfo(struct scsipi_periph *, struct mmc_discinfo *);
static int mmc_gettrackinfo(struct scsipi_periph *, struct mmc_trackinfo *);
static int mmc_do_op(struct scsipi_periph *, struct mmc_op *);
static int mmc_setup_writeparams(struct scsipi_periph *, struct mmc_writeparams *);

static void cd_set_geometry(struct cd_softc *);

CFATTACH_DECL3_NEW(cd, sizeof(struct cd_softc), cdmatch, cdattach, cddetach,
NULL, NULL, NULL, DVF_DETACH_SHUTDOWN);

extern struct cfdriver cd_cd;

static const struct scsipi_inquiry_pattern cd_patterns[] = {
{T_CDROM, T_REMOV,
"", "", ""},
{T_WORM, T_REMOV,
"", "", ""},
#if 0
{T_CDROM, T_REMOV, /* more luns */
"PIONEER ", "CD-ROM DRM-600 ", ""},
#endif
{T_DIRECT, T_REMOV,
"NEC CD-ROM DRIVE:260", "", ""},
};

static dev_type_open(cdopen);
static dev_type_close(cdclose);
static dev_type_read(cdread);
static dev_type_write(cdwrite);
static dev_type_ioctl(cdioctl);
static dev_type_strategy(cdstrategy);
static dev_type_dump(cddump);
static dev_type_size(cdsize);

const struct bdevsw cd_bdevsw = {
.d_open = cdopen,
.d_close = cdclose,
.d_strategy = cdstrategy,
.d_ioctl = cdioctl,
.d_dump = cddump,
.d_psize = cdsize,
.d_discard = nodiscard,
.d_flag = D_DISK | D_MPSAFE
};

const struct cdevsw cd_cdevsw = {
.d_open = cdopen,
.d_close = cdclose,
.d_read = cdread,
.d_write = cdwrite,
.d_ioctl = cdioctl,
.d_stop = nostop,
.d_tty = notty,
.d_poll = nopoll,
.d_mmap = nommap,
.d_kqfilter = nokqfilter,
.d_discard = nodiscard,
.d_flag = D_DISK | D_MPSAFE
};

static const struct dkdriver cddkdriver = {
.d_open = cdopen,
.d_close = cdclose,
.d_strategy = cdstrategy,
.d_minphys = cdminphys,
.d_diskstart = cd_diskstart,
.d_firstopen = cd_firstopen,
.d_lastclose = cd_lastclose,
.d_label = cd_label,
};

static const struct scsipi_periphsw cd_switch = {
cd_interpret_sense, /* use our error handler first */
cdstart, /* we have a queue, which is started by this */
NULL, /* we do not have an async handler */
cddone, /* deal with stats at interrupt time */
};

/*
* The routine called by the low level scsi routine when it discovers
* A device suitable for this driver
*/
static int
cdmatch(device_t parent, cfdata_t match, void *aux)
{
struct scsipibus_attach_args *sa = aux;
int priority;

(void)scsipi_inqmatch(&sa->sa_inqbuf,
cd_patterns, sizeof(cd_patterns) / sizeof(cd_patterns[0]),
sizeof(cd_patterns[0]), &priority);

return (priority);
}

static void
cdattach(device_t parent, device_t self, void *aux)
{
struct cd_softc *cd = device_private(self);
struct dk_softc *dksc = &cd->sc_dksc;
struct scsipibus_attach_args *sa = aux;
struct scsipi_periph *periph = sa->sa_periph;
int dtype;

SC_DEBUG(periph, SCSIPI_DB2, ("cdattach: "));

switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph))) {
case SCSIPI_BUSTYPE_SCSI:
dtype = DKTYPE_SCSI;
if (periph->periph_version == 0)
cd->flags |= CDF_ANCIENT;
break;
case SCSIPI_BUSTYPE_ATAPI:
dtype = DKTYPE_ATAPI;
break;
default:
dtype = DKTYPE_UNKNOWN;
break;
}

/*
* Initialize and attach the disk structure.
*/
dk_init(dksc, self, dtype);
disk_init(&dksc->sc_dkdev, dksc->sc_xname, &cddkdriver);

dk_attach(dksc);
disk_attach(&dksc->sc_dkdev);

bufq_alloc(&dksc->sc_bufq, "disksort", BUFQ_SORT_RAWBLOCK);

callout_init(&cd->sc_callout, 0);

/*
* Store information needed to contact our base driver
*/
cd->sc_periph = periph;

periph->periph_dev = dksc->sc_dev;
periph->periph_switch = &cd_switch;

/*
* Increase our openings to the maximum-per-periph
* supported by the adapter. This will either be
* clamped down or grown by the adapter if necessary.
*/
periph->periph_openings =
SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel);
periph->periph_flags |= PERIPH_GROW_OPENINGS;

aprint_naive("\n");
aprint_normal("\n");

if (!pmf_device_register(self, NULL, NULL))
aprint_error_dev(self, "couldn't establish power handler\n");
}

static int
cddetach(device_t self, int flags)
{
struct cd_softc *cd = device_private(self);
struct dk_softc *dksc = &cd->sc_dksc;
struct scsipi_periph *periph = cd->sc_periph;
struct scsipi_channel *chan = periph->periph_channel;
int bmaj, cmaj, i, mn, rc;

if ((rc = disk_begindetach(&dksc->sc_dkdev, cd_lastclose, self, flags)) != 0)
return rc;

/* locate the major number */
bmaj = bdevsw_lookup_major(&cd_bdevsw);
cmaj = cdevsw_lookup_major(&cd_cdevsw);

/* Nuke the vnodes for any open instances */
for (i = 0; i < MAXPARTITIONS; i++) {
mn = CDMINOR(device_unit(self), i);
vdevgone(bmaj, mn, mn, VBLK);
vdevgone(cmaj, mn, mn, VCHR);
}

/* kill any pending restart */
callout_halt(&cd->sc_callout, NULL);

dk_drain(dksc);

/* Kill off any pending commands. */
mutex_enter(chan_mtx(chan));
scsipi_kill_pending(cd->sc_periph);
mutex_exit(chan_mtx(chan));

bufq_free(dksc->sc_bufq);

/* Detach from the disk list. */
disk_detach(&dksc->sc_dkdev);
disk_destroy(&dksc->sc_dkdev);

dk_detach(dksc);

callout_destroy(&cd->sc_callout);

pmf_device_deregister(self);

return (0);
}

/*
* Serialized by caller
*/
static int
cd_firstopen(device_t self, dev_t dev, int flag, int fmt)
{
struct cd_softc *cd = device_private(self);
struct scsipi_periph *periph = cd->sc_periph;
struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter;
int error, silent;
int part;

part = CDPART(dev);

error = scsipi_adapter_addref(adapt);
if (error)
return error;

if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT))
silent = XS_CTL_SILENT;
else
silent = 0;

/* make cdclose() silent */
cd->flags |= CDF_EJECTED;

/* Check that it is still responding and ok. */
error = scsipi_test_unit_ready(periph,
XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE |
XS_CTL_SILENT);

/*
* Start the pack spinning if necessary. Always allow the
* raw partition to be opened, for raw IOCTLs. Data transfers
* will check for SDEV_MEDIA_LOADED.
*/
if (error == EIO) {
error = scsipi_start(periph, SSS_START, silent);
if (error == EINVAL)
error = EIO;
}
if (error) {
if (part == RAW_PART)
goto out;
goto bad;
}

/* Lock the pack in. */
error = scsipi_prevent(periph, SPAMR_PREVENT_DT,
XS_CTL_IGNORE_ILLEGAL_REQUEST |
XS_CTL_IGNORE_MEDIA_CHANGE);
SC_DEBUG(periph, SCSIPI_DB1,
("cdopen: scsipi_prevent, error=%d\n", error));
if (error) {
if (part == RAW_PART)
goto out;
goto bad;
}

if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
int param_error;

/* Load the physical device parameters. */
param_error = cd_get_parms(cd, 0);
if (param_error == CDGP_RESULT_OFFLINE) {
error = ENXIO;
goto bad2;
}
periph->periph_flags |= PERIPH_MEDIA_LOADED;

SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded "));

cd_set_geometry(cd);

/* make cdclose() loud again */
cd->flags &= ~CDF_EJECTED;
}

periph->periph_flags |= PERIPH_OPEN;

out:
return 0;

bad2:
scsipi_prevent(periph, SPAMR_ALLOW,
XS_CTL_IGNORE_ILLEGAL_REQUEST |
XS_CTL_IGNORE_MEDIA_CHANGE |
XS_CTL_SILENT);

bad:
scsipi_adapter_delref(adapt);
return error;
}

/*
* open the device. Make sure the partition info is a up-to-date as can be.
*/
static int
cdopen(dev_t dev, int flag, int fmt, struct lwp *l)
{
struct cd_softc *cd;
struct dk_softc *dksc;
struct scsipi_periph *periph;
int unit, part;
int error;

unit = CDUNIT(dev);
cd = device_lookup_private(&cd_cd, unit);
if (cd == NULL)
return (ENXIO);
dksc = &cd->sc_dksc;

periph = cd->sc_periph;
part = CDPART(dev);

SC_DEBUG(periph, SCSIPI_DB1,
("cdopen: dev=0x%"PRIu64" (unit %"PRIu32" (of %d), partition %d)\n",
dev, unit, cd_cd.cd_ndevs, CDPART(dev)));

/*
* If any partition is open, but the disk has been invalidated,
* disallow further opens of non-raw partition
*/
if ((periph->periph_flags & (PERIPH_OPEN | PERIPH_MEDIA_LOADED)) ==
PERIPH_OPEN) {
if (part != RAW_PART || fmt != S_IFCHR)
return EIO;
}

error = dk_open(dksc, dev, flag, fmt, l);

SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n"));

return error;
}

/*
* Serialized by caller
*/
static int
cd_lastclose(device_t self)
{
struct cd_softc *cd = device_private(self);
struct scsipi_periph *periph = cd->sc_periph;
struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter;
int silent;

if ((cd->flags & CDF_EJECTED) != 0 ||
(periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)
silent = XS_CTL_SILENT;
else
silent = 0;

cdcachesync(periph, silent);

scsipi_wait_drain(periph);

scsipi_prevent(periph, SPAMR_ALLOW,
XS_CTL_IGNORE_ILLEGAL_REQUEST |
XS_CTL_IGNORE_NOT_READY |
XS_CTL_SILENT);
periph->periph_flags &= ~PERIPH_OPEN;

scsipi_wait_drain(periph);

scsipi_adapter_delref(adapt);

return 0;
}

/*
* close the device.. only called if we are the LAST
* occurrence of an open device
*/
static int
cdclose(dev_t dev, int flag, int fmt, struct lwp *l)
{
struct cd_softc *cd;
struct dk_softc *dksc;
int unit;

unit = CDUNIT(dev);
cd = device_lookup_private(&cd_cd, unit);
dksc = &cd->sc_dksc;

return dk_close(dksc, dev, flag, fmt, l);
}

static void
cd_bounce_buffer_done(struct buf *bp)
{
struct cdbounce *bounce = bp->b_private;
struct buf *obp = bounce->obp;

if (bp == bounce->lbp) {
if ((bounce->lerr = bp->b_error) == 0)
memcpy(obp->b_data, (char *)bp->b_data + bounce->head, bounce->lcount);
bounce->lbp = NULL;
}

if (bp == bounce->rbp) {
if ((bounce->rerr = bp->b_error) == 0)
memcpy((char *)obp->b_data + bounce->lcount, bp->b_data, bounce->rcount);
bounce->rbp = NULL;
}

free(bp->b_data, M_DEVBUF);
putiobuf(bp);

if (bounce->lbp != NULL || bounce->rbp != NULL)
return;

obp->b_error = bounce->rerr;
if (bounce->lerr)
obp->b_error = bounce->lerr;

obp->b_resid = 0;
if (obp->b_error)
obp->b_resid = obp->b_bcount;

free(bounce, M_DEVBUF);
biodone(obp);
}

static int
cd_make_bounce_buffer(struct cd_softc *cd, struct buf *bp, daddr_t blkno, int count, struct buf **nbpp, void *priv)
{
struct buf *nbp;

/* We don't support bouncing writes */
if ((bp->b_flags & B_READ) == 0)
return EACCES; /* XXX */

nbp = getiobuf(NULL, false);
if (nbp == NULL)
return ENOMEM;

nbp->b_data = malloc(count, M_DEVBUF, M_NOWAIT);
if (nbp->b_data == NULL) {
putiobuf(nbp);
return ENOMEM;
}

/* Set up the IOP to the bounce buffer */
nbp->b_error = 0;
nbp->b_dev = bp->b_dev;
nbp->b_proc = bp->b_proc;
nbp->b_bcount = count;
nbp->b_bufsize = count;
nbp->b_blkno = blkno;
nbp->b_flags = bp->b_flags | B_READ;
nbp->b_oflags = bp->b_oflags;
nbp->b_cflags = bp->b_cflags;
nbp->b_iodone = cd_bounce_buffer_done;
nbp->b_private = priv;

BIO_COPYPRIO(nbp, bp);

*nbpp = nbp;
return 0;
}

static int
cd_make_bounce(struct cd_softc *cd, struct buf *bp, struct cdbounce **bouncep)
{
struct dk_softc *dksc = &cd->sc_dksc;
unsigned secsize = dksc->sc_dkdev.dk_geom.dg_secsize;
struct cdbounce *bounce;
int bps, nblks, skip, total, count;
daddr_t blkno;
struct buf *lbp, *rbp;
int error;

bounce = malloc(sizeof(struct cdbounce), M_DEVBUF, M_NOWAIT|M_ZERO);
if (bounce == NULL)
return ENOMEM;

bps = howmany(secsize, DEV_BSIZE);
nblks = howmany(bp->b_bcount, DEV_BSIZE);

skip = bp->b_blkno % bps;

blkno = bp->b_blkno - skip;
total = roundup(nblks + skip, bps) * DEV_BSIZE;

count = total;
cd_iosize(dksc->sc_dev, &count);

bounce->head = skip * DEV_BSIZE;
bounce->lcount = imin(count - bounce->head, bp->b_bcount);
bounce->rcount = bp->b_bcount - bounce->lcount;

error = cd_make_bounce_buffer(cd, bp, blkno, count, &lbp, bounce);
if (error)
goto bad;

blkno += howmany(count, DEV_BSIZE);
count = total - count;

if (count > 0) {
error = cd_make_bounce_buffer(cd, bp, blkno, count, &rbp, bounce);
if (error) {
free(lbp->b_data, M_DEVBUF);
putiobuf(lbp);
goto bad;
}
} else
rbp = NULL;

bounce->obp = bp;
bounce->lbp = lbp;
bounce->rbp = rbp;

*bouncep = bounce;

return 0;

bad:
free(bounce, M_DEVBUF);
return error;
}

/*
* Actually translate the requested transfer into one the physical driver can
* understand. The transfer is described by a buf and will include only one
* physical transfer.
*/
static void
cdstrategy(struct buf *bp)
{
struct cd_softc *cd = device_lookup_private(&cd_cd,CDUNIT(bp->b_dev));
struct dk_softc *dksc = &cd->sc_dksc;
struct scsipi_periph *periph = cd->sc_periph;
int error;

SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cdstrategy "));
SC_DEBUG(cd->sc_periph, SCSIPI_DB1,
("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno));

/*
* If the device has been made invalid, error out
* maybe the media changed
*/
if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) {
if (periph->periph_flags & PERIPH_OPEN)
error = EIO;
else
error = ENODEV;
goto bad;
}

/*
* If label and device don't agree in sector size use a bounce buffer
*/
if (dksc->sc_dkdev.dk_label->d_secsize != dksc->sc_dkdev.dk_geom.dg_secsize) {
struct cdbounce *bounce = NULL;

error = cd_make_bounce(cd, bp, &bounce);
if (error)
goto bad;

dk_strategy(dksc, bounce->lbp);
if (bounce->rbp != NULL)
dk_strategy(dksc, bounce->rbp);

return;
}

dk_strategy(dksc, bp);
return;

bad:
bp->b_error = error;
bp->b_resid = bp->b_bcount;
biodone(bp);
}

/*
* Issue single I/O command
*
* Called from dk_start and implicitly from dk_strategy
*/
static int
cd_diskstart(device_t dev, struct buf *bp)
{
struct cd_softc *cd = device_private(dev);
struct scsipi_periph *periph = cd->sc_periph;
struct scsipi_channel *chan = periph->periph_channel;
struct scsipi_rw_10 cmd_big;
struct scsi_rw_6 cmd_small;
struct scsipi_generic *cmdp;
struct scsipi_xfer *xs;
int error, flags, nblks, cmdlen;

SC_DEBUG(periph, SCSIPI_DB2, ("cdstart "));

mutex_enter(chan_mtx(chan));

if (periph->periph_active >= periph->periph_openings) {
error = EAGAIN;
goto out;
}

/*
* there is excess capacity, but a special waits
* It'll need the adapter as soon as we clear out of the
* way and let it run (user level wait).
*/
if (periph->periph_flags & PERIPH_WAITING) {
periph->periph_flags &= ~PERIPH_WAITING;
cv_broadcast(periph_cv_periph(periph));
error = EAGAIN;
goto out;
}

/*
* If the device has become invalid, abort all the
* reads and writes until all files have been closed and
* re-opened
*/
if (__predict_false(
(periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) {
error = EIO;
goto out;
}

nblks = howmany(bp->b_bcount, cd->params.blksize);

/*
* Fill out the scsi command. If the transfer will
* fit in a "small" cdb, use it.
*/
if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) &&
((nblks & 0xff) == nblks) &&
!(periph->periph_quirks & PQUIRK_ONLYBIG)) {
/*
* We can fit in a small cdb.
*/
memset(&cmd_small, 0, sizeof(cmd_small));
cmd_small.opcode = (bp->b_flags & B_READ) ?
SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND;
_lto3b(bp->b_rawblkno, cmd_small.addr);
cmd_small.length = nblks & 0xff;
cmdlen = sizeof(cmd_small);
cmdp = (struct scsipi_generic *)&cmd_small;
} else {
/*
* Need a large cdb.
*/
memset(&cmd_big, 0, sizeof(cmd_big));
cmd_big.opcode = (bp->b_flags & B_READ) ?
READ_10 : WRITE_10;
_lto4b(bp->b_rawblkno, cmd_big.addr);
_lto2b(nblks, cmd_big.length);
cmdlen = sizeof(cmd_big);
cmdp = (struct scsipi_generic *)&cmd_big;
}

/*
* Figure out what flags to use.
*/
flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG;
if (bp->b_flags & B_READ)
flags |= XS_CTL_DATA_IN;
else
flags |= XS_CTL_DATA_OUT;

/*
* Call the routine that chats with the adapter.
* Note: we cannot sleep as we may be an interrupt
*/
xs = scsipi_make_xs_locked(periph, cmdp, cmdlen,
(u_char *)bp->b_data, bp->b_bcount,
CDRETRIES, 30000, bp, flags);
if (__predict_false(xs == NULL)) {
/*
* out of memory. Keep this buffer in the queue, and
* retry later.
*/
callout_reset(&cd->sc_callout, hz / 2, cdrestart, cd);
error = EAGAIN;
goto out;
}

error = scsipi_execute_xs(xs);
/* with a scsipi_xfer preallocated, scsipi_command can't fail */
KASSERT(error == 0);

out:
mutex_exit(chan_mtx(chan));

return error;
}

/*
* Recover I/O request after memory shortage
*
* Called from callout
*/
static void
cdrestart(void *v)
{
struct cd_softc *cd = v;
struct dk_softc *dksc = &cd->sc_dksc;

dk_start(dksc, NULL);
}

/*
* Recover I/O request after memory shortage
*
* Called from scsipi midlayer when resources have been freed
* with channel lock held
*/
static void
cdstart(struct scsipi_periph *periph)
{
struct cd_softc *cd = device_private(periph->periph_dev);
struct dk_softc *dksc = &cd->sc_dksc;
struct scsipi_channel *chan = periph->periph_channel;

/*
* release channel lock as dk_start may need to acquire
* other locks
*
* cdstart is called from scsipi_put_xs and all its callers
* release the lock afterwards. So releasing it here
* doesn't matter.
*/
mutex_exit(chan_mtx(chan));

dk_start(dksc, NULL);

mutex_enter(chan_mtx(chan));
}

static void
cddone(struct scsipi_xfer *xs, int error)
{
struct cd_softc *cd = device_private(xs->xs_periph->periph_dev);
struct dk_softc *dksc = &cd->sc_dksc;
struct buf *bp = xs->bp;

if (bp) {
bp->b_error = error;
bp->b_resid = xs->resid;
if (error) {
/* on a read/write error bp->b_resid is zero, so fix */
bp->b_resid = bp->b_bcount;
}

dk_done(dksc, bp);
/* dk_start is called from scsipi_complete */
}
}

static int
cd_interpret_sense(struct scsipi_xfer *xs)
{
struct scsipi_periph *periph = xs->xs_periph;
struct scsi_sense_data *sense = &xs->sense.scsi_sense;
int retval = EJUSTRETURN;

/*
* If it isn't an extended or extended/deferred error, let
* the generic code handle it.
*/
if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT &&
SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED)
return (retval);

/*
* If we got a "Unit not ready" (SKEY_NOT_READY) and "Logical Unit
* Is In The Process of Becoming Ready" (Sense code 0x04,0x01), then
* wait a bit for the drive to spin up
*/

if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
(sense->asc == 0x04) && (sense->ascq == 0x01)) {
/*
* Sleep for 5 seconds to wait for the drive to spin up
*/

SC_DEBUG(periph, SCSIPI_DB1, ("Waiting 5 sec for CD "
"spinup\n"));
if (!callout_pending(&periph->periph_callout))
scsipi_periph_freeze(periph, 1);
callout_reset(&periph->periph_callout,
5 * hz, scsipi_periph_timed_thaw, periph);
retval = ERESTART;
}

/*
* If we got a "Unit not ready" (SKEY_NOT_READY) and "Logical Unit Not
* Ready, Operation In Progress" (Sense code 0x04, 0x07),
* then wait for the specified time
*/

if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
(sense->asc == 0x04) && (sense->ascq == 0x07)) {
/*
* we could listen to the delay; but it looks like the skey
* data is not always returned.
*/
/* cd_delay = _2btol(sense->sks.sks_bytes); */

/* wait for a half second and get going again */
if (!callout_pending(&periph->periph_callout))
scsipi_periph_freeze(periph, 1);
callout_reset(&periph->periph_callout,
hz/2, scsipi_periph_timed_thaw, periph);
retval = ERESTART;
}

/*
* If we got a "Unit not ready" (SKEY_NOT_READY) and "Long write in
* progress" (Sense code 0x04, 0x08), then wait for the specified
* time
*/

if ((SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY) &&
(sense->asc == 0x04) && (sense->ascq == 0x08)) {
/*
* long write in process; we could listen to the delay; but it
* looks like the skey data is not always returned.
*/
/* cd_delay = _2btol(sense->sks.sks_bytes); */

/* wait for a half second and get going again */
if (!callout_pending(&periph->periph_callout))
scsipi_periph_freeze(periph, 1);
callout_reset(&periph->periph_callout,
hz/2, scsipi_periph_timed_thaw, periph);
retval = ERESTART;
}

return (retval);
}

static void
cdminphys(struct buf *bp)
{
struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(bp->b_dev));
struct dk_softc *dksc = &cd->sc_dksc;
long xmax;

/*
* If the device is ancient, we want to make sure that
* the transfer fits into a 6-byte cdb.
*
* XXX Note that the SCSI-I spec says that 256-block transfers
* are allowed in a 6-byte read/write, and are specified
* by setting the "length" to 0. However, we're conservative
* here, allowing only 255-block transfers in case an
* ancient device gets confused by length == 0. A length of 0
* in a 10-byte read/write actually means 0 blocks.
*/
if (cd->flags & CDF_ANCIENT) {
xmax = dksc->sc_dkdev.dk_geom.dg_secsize * 0xff;

if (bp->b_bcount > xmax)
bp->b_bcount = xmax;
}

scsipi_adapter_minphys(cd->sc_periph->periph_channel, bp);
}

static void
cd_iosize(device_t dev, int *count)
{
struct buf B;
int bmaj;

bmaj = bdevsw_lookup_major(&cd_bdevsw);
B.b_dev = MAKECDDEV(bmaj,device_unit(dev),RAW_PART);
B.b_bcount = *count;

cdminphys(&B);

*count = B.b_bcount;
}

static int
cdread(dev_t dev, struct uio *uio, int ioflag)
{
return (physio(cdstrategy, NULL, dev, B_READ, cdminphys, uio));
}

static int
cdwrite(dev_t dev, struct uio *uio, int ioflag)
{
return (physio(cdstrategy, NULL, dev, B_WRITE, cdminphys, uio));
}

#if 0 /* XXX Not used */
/*
* conversion between minute-seconde-frame and logical block address
* addresses format
*/
static void
lba2msf(u_long lba, u_char *m, u_char *s, u_char *f)
{
u_long tmp;

tmp = lba + CD_BLOCK_OFFSET; /* offset of first logical frame */
tmp &= 0xffffff; /* negative lbas use only 24 bits */
*m = tmp / (CD_SECS * CD_FRAMES);
tmp %= (CD_SECS * CD_FRAMES);
*s = tmp / CD_FRAMES;
*f = tmp % CD_FRAMES;
}
#endif /* XXX Not used */

/*
* Convert an hour:minute:second:frame address to a logical block address. In
* theory the number of secs/minute and number of frames/second could be
* configured differently in the device as could the block offset but in
* practice these values are rock solid and most drives don't even allow
* theses values to be changed.
*/
static uint32_t
hmsf2lba(uint8_t h, uint8_t m, uint8_t s, uint8_t f)
{
return (((((uint32_t) h * 60 + m) * CD_SECS) + s) * CD_FRAMES + f)
- CD_BLOCK_OFFSET;
}

static int
cdreadmsaddr(struct cd_softc *cd, struct cd_formatted_toc *toc, int *addr)
{
struct scsipi_periph *periph = cd->sc_periph;
int error;
struct cd_toc_entry *cte;

error = cd_read_toc(cd, CD_TOC_FORM, 0, 0, toc,
sizeof(struct ioc_toc_header) + sizeof(struct cd_toc_entry),
0, 0x40 /* control word for "get MS info" */);

if (error)
return (error);

cte = &toc->entries[0];
if (periph->periph_quirks & PQUIRK_LITTLETOC) {
cte->addr.lba = le32toh(cte->addr.lba);
toc->header.len = le16toh(toc->header.len);
} else {
cte->addr.lba = be32toh(cte->addr.lba);
toc->header.len = be16toh(toc->header.len);
}

*addr = (toc->header.len >= 10 && cte->track > 1) ?
cte->addr.lba : 0;
return 0;
}

/* synchronise caches code from cd.c, move to scsipi_ioctl.c ? */
static int
cdcachesync(struct scsipi_periph *periph, int flags) {
struct scsi_synchronize_cache_10 cmd;

/*
* Issue a SYNCHRONIZE CACHE. MMC devices have to issue with address 0
* and length 0 as it can't synchronise parts of the disc per spec.
* We ignore ILLEGAL REQUEST in the event that the command is not
* supported by the device, and poll for completion so that we know
* that the cache has actually been flushed.
*
* XXX should we handle the PQUIRK_NOSYNCCACHE ?
*/

memset(&cmd, 0, sizeof(cmd));
cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10;

return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0,
CDRETRIES, 30000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST));
}

static int
do_cdioreadentries(struct cd_softc *cd, struct ioc_read_toc_entry *te,
struct cd_formatted_toc *toc)
{
/* READ TOC format 0 command, entries */
struct ioc_toc_header *th;
struct cd_toc_entry *cte;
u_int len = te->data_len;
int ntracks;
int error;

th = &toc->header;

if (len > sizeof(toc->entries) ||
len < sizeof(toc->entries[0]))
return (EINVAL);
error = cd_read_toc(cd, CD_TOC_FORM, te->address_format,
te->starting_track, toc,
sizeof(toc->header) + len,
0, 0);
if (error)
return (error);
if (te->address_format == CD_LBA_FORMAT)
for (ntracks =
th->ending_track - th->starting_track + 1;
ntracks >= 0; ntracks--) {
cte = &toc->entries[ntracks];
cte->addr_type = CD_LBA_FORMAT;
if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
cte->addr.lba = le32toh(cte->addr.lba);
else
cte->addr.lba = be32toh(cte->addr.lba);
}
if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
th->len = le16toh(th->len);
else
th->len = be16toh(th->len);
return 0;
}

/*
* Perform special action on behalf of the user.
* Knows about the internals of this device
*/
static int
cdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
{
struct cd_softc *cd = device_lookup_private(&cd_cd, CDUNIT(dev));
struct dk_softc *dksc = &cd->sc_dksc;
struct scsipi_periph *periph = cd->sc_periph;
struct cd_formatted_toc toc;
int part = CDPART(dev);
int error;

SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cdioctl 0x%lx ", cmd));

/*
* If the device is not valid, some IOCTLs can still be
* handled on the raw partition. Check this here.
*/
if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 &&
part != RAW_PART)
return (EIO);

switch (cmd) {
case DIOCTUR: {
/* test unit ready */
error = scsipi_test_unit_ready(cd->sc_periph, XS_CTL_SILENT);
*((int*)addr) = (error == 0);
if (error == ENODEV || error == EIO || error == 0)
return 0;
return error;
}
case CDIOCPLAYTRACKS: {
/* PLAY_MSF command */
struct ioc_play_track *args = addr;

if ((error = cd_set_pa_immed(cd, 0)) != 0)
return (error);
return (cd_play_tracks(cd, &toc, args->start_track,
args->start_index, args->end_track, args->end_index));
}
case CDIOCPLAYMSF: {
/* PLAY_MSF command */
struct ioc_play_msf *args = addr;

if ((error = cd_set_pa_immed(cd, 0)) != 0)
return (error);
return (cd_play_msf(cd, args->start_m, args->start_s,
args->start_f, args->end_m, args->end_s, args->end_f));
}
case CDIOCPLAYBLOCKS: {
/* PLAY command */
struct ioc_play_blocks *args = addr;

if ((error = cd_set_pa_immed(cd, 0)) != 0)
return (error);
return (cd_play(cd, args->blk, args->len));
}
case CDIOCREADSUBCHANNEL: {
/* READ_SUBCHANNEL command */
struct ioc_read_subchannel *args = addr;
struct cd_sub_channel_info data;
u_int len = args->data_len;

if (len > sizeof(data) ||
len < sizeof(struct cd_sub_channel_header))
return (EINVAL);
error = cd_read_subchannel(cd, args->address_format,
args->data_format, args->track, &data, len, 0);
if (error)
return (error);
len = uimin(len, _2btol(data.header.data_len) +
sizeof(struct cd_sub_channel_header));
return (copyout(&data, args->data, len));
}
case CDIOCREADSUBCHANNEL_BUF: {
/* As CDIOCREADSUBCHANNEL, but without a 2nd buffer area */
struct ioc_read_subchannel_buf *args = addr;
if (args->req.data_len != sizeof args->info)
return EINVAL;
return cd_read_subchannel(cd, args->req.address_format,
args->req.data_format, args->req.track, &args->info,
sizeof(args->info), 0);
}
case CDIOREADTOCHEADER: {
/* READ TOC format 0 command, static header */
if ((error = cd_read_toc(cd, CD_TOC_FORM, 0, 0,
&toc, sizeof(toc.header), 0, 0)) != 0)
return (error);
if (cd->sc_periph->periph_quirks & PQUIRK_LITTLETOC)
toc.header.len = le16toh(toc.header.len);
else
toc.header.len = be16toh(toc.header.len);
memcpy(addr, &toc.header, sizeof(toc.header));
return (0);
}
case CDIOREADTOCENTRYS: {
struct ioc_read_toc_entry *te = addr;
error = do_cdioreadentries(cd, te, &toc);
if (error != 0)
return error;
return copyout(toc.entries, te->data, uimin(te->data_len,
toc.header.len - (sizeof(toc.header.starting_track)
+ sizeof(toc.header.ending_track))));
}
case CDIOREADTOCENTRIES_BUF: {
struct ioc_read_toc_entry_buf *te = addr;
error = do_cdioreadentries(cd, &te->req, &toc);
if (error != 0)
return error;
memcpy(te->entry, toc.entries, uimin(te->req.data_len,
toc.header.len - (sizeof(toc.header.starting_track)
+ sizeof(toc.header.ending_track))));
return 0;
}
case CDIOREADMSADDR: {
/* READ TOC format 0 command, length of first track only */
int sessno = *(int*)addr;

if (sessno != 0)
return (EINVAL);

return (cdreadmsaddr(cd, &toc, addr));
}
case CDIOCSETPATCH: {
struct ioc_patch *arg = addr;

return (cd_setchan(cd, arg->patch[0], arg->patch[1],
arg->patch[2], arg->patch[3], 0));
}
case CDIOCGETVOL: {
/* MODE SENSE command (AUDIO page) */
struct ioc_vol *arg = addr;

return (cd_getvol(cd, arg, 0));
}
case CDIOCSETVOL: {
/* MODE SENSE/MODE SELECT commands (AUDIO page) */
struct ioc_vol *arg = addr;

return (cd_setvol(cd, arg, 0));
}
case CDIOCSETMONO:
/* MODE SENSE/MODE SELECT commands (AUDIO page) */
return (cd_setchan(cd, BOTH_CHANNEL, BOTH_CHANNEL,
MUTE_CHANNEL, MUTE_CHANNEL, 0));

case CDIOCSETSTEREO:
/* MODE SENSE/MODE SELECT commands (AUDIO page) */
return (cd_setchan(cd, LEFT_CHANNEL, RIGHT_CHANNEL,
MUTE_CHANNEL, MUTE_CHANNEL, 0));

case CDIOCSETMUTE:
/* MODE SENSE/MODE SELECT commands (AUDIO page) */
return (cd_setchan(cd, MUTE_CHANNEL, MUTE_CHANNEL,
MUTE_CHANNEL, MUTE_CHANNEL, 0));

case CDIOCSETLEFT:
/* MODE SENSE/MODE SELECT commands (AUDIO page) */
return (cd_setchan(cd, LEFT_CHANNEL, LEFT_CHANNEL,
MUTE_CHANNEL, MUTE_CHANNEL, 0));

case CDIOCSETRIGHT:
/* MODE SENSE/MODE SELECT commands (AUDIO page) */
return (cd_setchan(cd, RIGHT_CHANNEL, RIGHT_CHANNEL,
MUTE_CHANNEL, MUTE_CHANNEL, 0));

case CDIOCRESUME:
/* PAUSE command */
return (cd_pause(cd, PA_RESUME));
case CDIOCPAUSE:
/* PAUSE command */
return (cd_pause(cd, PA_PAUSE));
case CDIOCSTART:
return (scsipi_start(periph, SSS_START, 0));
case CDIOCSTOP:
return (scsipi_start(periph, SSS_STOP, 0));
case CDIOCCLOSE:
return (scsipi_start(periph, SSS_START|SSS_LOEJ,
XS_CTL_IGNORE_NOT_READY | XS_CTL_IGNORE_MEDIA_CHANGE));
case DIOCEJECT:
if (*(int *)addr == 0) {
int pmask = __BIT(part);
/*
* Don't force eject: check that we are the only
* partition open. If so, unlock it.
*/
if (DK_BUSY(dksc, pmask) == 0) {
error = scsipi_prevent(periph, SPAMR_ALLOW,
XS_CTL_IGNORE_NOT_READY);
if (error)
return (error);
} else {
return (EBUSY);
}
}
/* FALLTHROUGH */
case CDIOCEJECT: /* FALLTHROUGH */
case ODIOCEJECT:
error = scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0);
if (error == 0)
/* Make sure cdclose() will do silent operations */
cd->flags |= CDF_EJECTED;
return error;
case DIOCCACHESYNC:
/* SYNCHRONISE CACHES command */
return (cdcachesync(periph, 0));
case CDIOCALLOW:
return (scsipi_prevent(periph, SPAMR_ALLOW, 0));
case CDIOCPREVENT:
return (scsipi_prevent(periph, SPAMR_PREVENT_DT, 0));
case DIOCLOCK:
return (scsipi_prevent(periph,
(*(int *)addr) ? SPAMR_PREVENT_DT : SPAMR_ALLOW, 0));
case CDIOCSETDEBUG:
cd->sc_periph->periph_dbflags |= (SCSIPI_DB1 | SCSIPI_DB2);
return (0);
case CDIOCCLRDEBUG:
cd->sc_periph->periph_dbflags &= ~(SCSIPI_DB1 | SCSIPI_DB2);
return (0);
case CDIOCRESET:
case SCIOCRESET:
return (cd_reset(cd));
case CDIOCLOADUNLOAD:
/* LOAD_UNLOAD command */
return (cd_load_unload(cd, addr));
case DVD_AUTH:
/* GPCMD_REPORT_KEY or GPCMD_SEND_KEY command */
return (dvd_auth(cd, addr));
case DVD_READ_STRUCT:
/* GPCMD_READ_DVD_STRUCTURE command */
return (dvd_read_struct(cd, addr));
case MMCGETDISCINFO:
/*
* GET_CONFIGURATION, READ_DISCINFO, READ_TRACKINFO,
* (READ_TOCf2, READ_CD_CAPACITY and GET_CONFIGURATION) commands
*/
return mmc_getdiscinfo(periph, (struct mmc_discinfo *) addr);
case MMCGETTRACKINFO:
/* READ TOCf2, READ_CD_CAPACITY and READ_TRACKINFO commands */
return mmc_gettrackinfo(periph, (struct mmc_trackinfo *) addr);
case MMCOP:
/*
* CLOSE TRACK/SESSION, RESERVE_TRACK, REPAIR_TRACK,
* SYNCHRONISE_CACHE commands
*/
return mmc_do_op(periph, (struct mmc_op *) addr);
case MMCSETUPWRITEPARAMS :
/* MODE SENSE page 5, MODE_SELECT page 5 commands */
return mmc_setup_writeparams(periph, (struct mmc_writeparams *) addr);
default:
error = dk_ioctl(dksc, dev, cmd, addr, flag, l);
if (error == ENOTTY)
error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, l);
return (error);
}

#ifdef DIAGNOSTIC
panic("cdioctl: impossible");
#endif
}

static void
cd_label(device_t self, struct disklabel *lp)
{
struct cd_softc *cd = device_private(self);
struct scsipi_periph *periph = cd->sc_periph;
struct cd_formatted_toc toc;
int lastsession = 0;

strncpy(lp->d_typename, "optical media", 16);
lp->d_rpm = 300;
lp->d_flags |= D_REMOVABLE;

if ((periph->periph_flags & PERIPH_MEDIA_LOADED) != 0) {
lp->d_flags |= D_SCSI_MMC;
(void) cdreadmsaddr(cd, &toc, &lastsession);
}

lp->d_partitions[0].p_offset = 0;
lp->d_partitions[0].p_size = lp->d_secperunit;
lp->d_partitions[0].p_cdsession = lastsession;
lp->d_partitions[0].p_fstype = FS_ISO9660;

lp->d_partitions[RAW_PART].p_offset = 0;
lp->d_partitions[RAW_PART].p_size = lp->d_secperunit;
lp->d_partitions[RAW_PART].p_fstype = FS_UDF;
}

/*
* Reading a disc's total capacity is apparently a very difficult issue for the
* SCSI standardisation group. Every disc type seems to have its own
* (re)invented size request method and modifiers. The failsafe way of
* determining the total (max) capacity i.e. not the recorded capacity but the
* total maximum capacity is to request the info on the last track and
* calculate the last lba.
*
* For ROM drives, we go for the CD recorded capacity. For recordable devices
* we count.
*/
static int
read_cd_capacity(struct scsipi_periph *periph, uint32_t *blksize, u_long *last_lba)
{
struct scsipi_read_cd_capacity cap_cmd;
/*
* XXX: see PR 48550 and PR 48754:
* the ahcisata(4) driver can not deal with unaligned
* data, so align this "a bit"
*/
struct scsipi_read_cd_cap_data cap __aligned(2);
struct scsipi_read_discinfo di_cmd;
struct scsipi_read_discinfo_data di __aligned(2);
struct scsipi_read_trackinfo ti_cmd;
struct scsipi_read_trackinfo_data ti __aligned(2);
uint32_t track_start, track_size;
int error, flags, msb, lsb, last_track;

/* if the device doesn't grok capacity, return the dummies */
if (periph->periph_quirks & PQUIRK_NOCAPACITY)
return 0;

/* first try read CD capacity for blksize and last recorded lba */
/* issue the cd capacity request */
flags = XS_CTL_DATA_IN;
memset(&cap_cmd, 0, sizeof(cap_cmd));
memset(&cap, 0, sizeof(cap));
cap_cmd.opcode = READ_CD_CAPACITY;

error = scsipi_command(periph,
(void *) &cap_cmd, sizeof(cap_cmd),
(void *) &cap, sizeof(cap),
CDRETRIES, 30000, NULL, flags);
if (error)
return error;

/* retrieve values and sanity check them */
*blksize = _4btol(cap.length);
*last_lba = _4btol(cap.addr);

/* blksize is 2048 for CD, but some drives give gibberish */
if ((*blksize < 512) || ((*blksize & 511) != 0)
|| (*blksize > 16*1024)) {
if (*blksize > 16*1024)
aprint_error("read_cd_capacity: extra large block "
"size %u found - limiting to 2kByte\n",
*blksize);
*blksize = 2048; /* some drives lie ! */
}

/* If the device doesn't handle READ_DISCINFO properly, */
/* return the dummies */
if (periph->periph_quirks & PQUIRK_NOREADDISCINFO)
return 0;

/* recordables have READ_DISCINFO implemented */
flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
memset(&di_cmd, 0, sizeof(di_cmd));
di_cmd.opcode = READ_DISCINFO;
_lto2b(READ_DISCINFO_BIGSIZE, di_cmd.data_len);

error = scsipi_command(periph,
(void *) &di_cmd, sizeof(di_cmd),
(void *) &di, READ_DISCINFO_BIGSIZE,
CDRETRIES, 30000, NULL, flags);
if (error == 0) {
msb = di.last_track_last_session_msb;
lsb = di.last_track_last_session_lsb;
last_track = (msb << 8) | lsb;

/* request info on last track */
memset(&ti_cmd, 0, sizeof(ti_cmd));
ti_cmd.opcode = READ_TRACKINFO;
ti_cmd.addr_type = 1; /* on tracknr */
_lto4b(last_track, ti_cmd.address); /* tracknr */
_lto2b(sizeof(ti), ti_cmd.data_len);

error = scsipi_command(periph,
(void *) &ti_cmd, sizeof(ti_cmd),
(void *) &ti, sizeof(ti),
CDRETRIES, 30000, NULL, flags);
if (error == 0) {
track_start = _4btol(ti.track_start);
track_size = _4btol(ti.track_size);

/* overwrite only with a sane value */
if (track_start + track_size >= 100)
*last_lba = (u_long) track_start + track_size -1;
}
}

/* sanity check for lba_size */
if (*last_lba < 100)
*last_lba = 400000-1;

return 0;
}

/*
* Find out from the device what its capacity is
*/
static u_long
cd_size(struct cd_softc *cd, int flags)
{
uint32_t blksize = 2048;
u_long last_lba = 0, size;
int error;

error = read_cd_capacity(cd->sc_periph, &blksize, &last_lba);
if (error)
goto error;

if (blksize != 2048) {
if (cd_setblksize(cd) == 0) {
blksize = 2048;
error = read_cd_capacity(cd->sc_periph,
&blksize, &last_lba);
if (error)
goto error;
}
}

size = last_lba + 1;
cd->params.blksize = blksize;
cd->params.disksize = size;
cd->params.disksize512 = ((u_int64_t)cd->params.disksize * blksize) / DEV_BSIZE;

SC_DEBUG(cd->sc_periph, SCSIPI_DB2,
("cd_size: %u %lu\n", blksize, size));

return size;

error:
/* something went wrong */
cd->params.blksize = 2048;
cd->params.disksize = 0;
cd->params.disksize512 = 0;

SC_DEBUG(cd->sc_periph, SCSIPI_DB2, ("cd_size: failed\n"));

return 0;
}

/*
* Get scsi driver to send a "start playing" command
*/
static int
cd_play(struct cd_softc *cd, int blkno, int nblks)
{
struct scsipi_play cmd;

memset(&cmd, 0, sizeof(cmd));
cmd.opcode = PLAY;
_lto4b(blkno, cmd.blk_addr);
_lto2b(nblks, cmd.xfer_len);

return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
CDRETRIES, 30000, NULL, 0));
}

/*
* Get scsi driver to send a "start playing" command
*/
static int
cd_play_tracks(struct cd_softc *cd, struct cd_formatted_toc *toc, int strack,
int sindex, int etrack, int eindex)
{
int error;

if (!etrack)
return (EIO);
if (strack > etrack)
return (EINVAL);

error = cd_load_toc(cd, CD_TOC_FORM, toc, 0);
if (error)
return (error);

if (++etrack > (toc->header.ending_track+1))
etrack = toc->header.ending_track+1;

strack -= toc->header.starting_track;
etrack -= toc->header.starting_track;
if (strack < 0)
return (EINVAL);

return (cd_play_msf(cd, toc->entries[strack].addr.msf.minute,
toc->entries[strack].addr.msf.second,
toc->entries[strack].addr.msf.frame,
toc->entries[etrack].addr.msf.minute,
toc->entries[etrack].addr.msf.second,
toc->entries[etrack].addr.msf.frame));
}

/*
* Get scsi driver to send a "play msf" command
*/
static int
cd_play_msf(struct cd_softc *cd, int startm, int starts, int startf, int endm,
int ends, int endf)
{
struct scsipi_play_msf cmd;

memset(&cmd, 0, sizeof(cmd));
cmd.opcode = PLAY_MSF;
cmd.start_m = startm;
cmd.start_s = starts;
cmd.start_f = startf;
cmd.end_m = endm;
cmd.end_s = ends;
cmd.end_f = endf;

return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
CDRETRIES, 30000, NULL, 0));
}

/*
* Get scsi driver to send a "start up" command
*/
static int
cd_pause(struct cd_softc *cd, int go)
{
struct scsipi_pause cmd;

memset(&cmd, 0, sizeof(cmd));
cmd.opcode = PAUSE;
cmd.resume = go & 0xff;

return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
CDRETRIES, 30000, NULL, 0));
}

/*
* Get scsi driver to send a "RESET" command
*/
static int
cd_reset(struct cd_softc *cd)
{

return (scsipi_command(cd->sc_periph, 0, 0, 0, 0,
CDRETRIES, 30000, NULL, XS_CTL_RESET));
}

/*
* Read subchannel
*/
static int
cd_read_subchannel(struct cd_softc *cd, int mode, int format, int track,
struct cd_sub_channel_info *data, int len, int flags)
{
struct scsipi_read_subchannel cmd;

memset(&cmd, 0, sizeof(cmd));
cmd.opcode = READ_SUBCHANNEL;
if (mode == CD_MSF_FORMAT)
cmd.byte2 |= CD_MSF;
cmd.byte3 = SRS_SUBQ;
cmd.subchan_format = format;
cmd.track = track;
_lto2b(len, cmd.data_len);

return (scsipi_command(cd->sc_periph,
(void *)&cmd, sizeof(struct scsipi_read_subchannel),
(void *)data, len,
CDRETRIES, 30000, NULL, flags | XS_CTL_DATA_IN | XS_CTL_SILENT));
}

/*
* Read table of contents
*/
static int
cd_read_toc(struct cd_softc *cd, int respf, int mode, int start,
struct cd_formatted_toc *toc, int len, int flags, int control)
{
struct scsipi_read_toc cmd;
int ntoc;

memset(&cmd, 0, sizeof(cmd));
#if 0
if (len != sizeof(struct ioc_toc_header))
ntoc = ((len) - sizeof(struct ioc_toc_header)) /
sizeof(struct cd_toc_entry);
else
#endif
ntoc = len;
cmd.opcode = READ_TOC;
if (mode == CD_MSF_FORMAT)
cmd.addr_mode |= CD_MSF;
cmd.resp_format = respf;
cmd.from_track = start;
_lto2b(ntoc, cmd.data_len);
cmd.control = control;

return (scsipi_command(cd->sc_periph,
(void *)&cmd, sizeof(cmd), (void *)toc, len, CDRETRIES,
30000, NULL, flags | XS_CTL_DATA_IN));
}

static int
cd_load_toc(struct cd_softc *cd, int respf, struct cd_formatted_toc *toc, int flags)
{
int ntracks, len, error;

if ((error = cd_read_toc(cd, respf, 0, 0, toc, sizeof(toc->header),
flags, 0)) != 0)
return (error);

ntracks = toc->header.ending_track - toc->header.starting_track + 1;
len = (ntracks + 1) * sizeof(struct cd_toc_entry) +
sizeof(toc->header);
if ((error = cd_read_toc(cd, respf, CD_MSF_FORMAT, 0, toc, len,
flags, 0)) != 0)
return (error);
return (0);
}

/*
* Get the scsi driver to send a full inquiry to the device and use the
* results to fill out the disk parameter structure.
*/
static int
cd_get_parms(struct cd_softc *cd, int flags)
{

/*
* give a number of sectors so that sec * trks * cyls
* is <= disk_size
*/
if (cd_size(cd, flags) == 0)
return (ENXIO);
return (0);
}

static int
cdsize(dev_t dev)
{

/* CD-ROMs are read-only. */
return (-1);
}

static int
cddump(dev_t dev, daddr_t blkno, void *va, size_t size)
{

/* Not implemented. */
return (ENXIO);
}

#define dvd_copy_key(dst, src) memcpy((dst), (src), sizeof(dvd_key))
#define dvd_copy_challenge(dst, src) memcpy((dst), (src), sizeof(dvd_challenge))

static int
dvd_auth(struct cd_softc *cd, dvd_authinfo *a)
{
struct scsipi_generic cmd;
u_int8_t bf[20];
int error;

memset(cmd.bytes, 0, 15);
memset(bf, 0, sizeof(bf));

switch (a->type) {
case DVD_LU_SEND_AGID:
cmd.opcode = GPCMD_REPORT_KEY;
cmd.bytes[8] = 8;
cmd.bytes[9] = 0 | (0 << 6);
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error)
return (error);
a->lsa.agid = bf[7] >> 6;
return (0);

case DVD_LU_SEND_CHALLENGE:
cmd.opcode = GPCMD_REPORT_KEY;
cmd.bytes[8] = 16;
cmd.bytes[9] = 1 | (a->lsc.agid << 6);
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error)
return (error);
dvd_copy_challenge(a->lsc.chal, &bf[4]);
return (0);

case DVD_LU_SEND_KEY1:
cmd.opcode = GPCMD_REPORT_KEY;
cmd.bytes[8] = 12;
cmd.bytes[9] = 2 | (a->lsk.agid << 6);
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error)
return (error);
dvd_copy_key(a->lsk.key, &bf[4]);
return (0);

case DVD_LU_SEND_TITLE_KEY:
cmd.opcode = GPCMD_REPORT_KEY;
_lto4b(a->lstk.lba, &cmd.bytes[1]);
cmd.bytes[8] = 12;
cmd.bytes[9] = 4 | (a->lstk.agid << 6);
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error)
return (error);
a->lstk.cpm = (bf[4] >> 7) & 1;
a->lstk.cp_sec = (bf[4] >> 6) & 1;
a->lstk.cgms = (bf[4] >> 4) & 3;
dvd_copy_key(a->lstk.title_key, &bf[5]);
return (0);

case DVD_LU_SEND_ASF:
cmd.opcode = GPCMD_REPORT_KEY;
cmd.bytes[8] = 8;
cmd.bytes[9] = 5 | (a->lsasf.agid << 6);
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error)
return (error);
a->lsasf.asf = bf[7] & 1;
return (0);

case DVD_HOST_SEND_CHALLENGE:
cmd.opcode = GPCMD_SEND_KEY;
cmd.bytes[8] = 16;
cmd.bytes[9] = 1 | (a->hsc.agid << 6);
bf[1] = 14;
dvd_copy_challenge(&bf[4], a->hsc.chal);
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
if (error)
return (error);
a->type = DVD_LU_SEND_KEY1;
return (0);

case DVD_HOST_SEND_KEY2:
cmd.opcode = GPCMD_SEND_KEY;
cmd.bytes[8] = 12;
cmd.bytes[9] = 3 | (a->hsk.agid << 6);
bf[1] = 10;
dvd_copy_key(&bf[4], a->hsk.key);
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 12,
CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
if (error) {
a->type = DVD_AUTH_FAILURE;
return (error);
}
a->type = DVD_AUTH_ESTABLISHED;
return (0);

case DVD_INVALIDATE_AGID:
cmd.opcode = GPCMD_REPORT_KEY;
cmd.bytes[9] = 0x3f | (a->lsa.agid << 6);
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 16,
CDRETRIES, 30000, NULL, 0);
if (error)
return (error);
return (0);

case DVD_LU_SEND_RPC_STATE:
cmd.opcode = GPCMD_REPORT_KEY;
cmd.bytes[8] = 8;
cmd.bytes[9] = 8 | (0 << 6);
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error)
return (error);
a->lrpcs.type = (bf[4] >> 6) & 3;
a->lrpcs.vra = (bf[4] >> 3) & 7;
a->lrpcs.ucca = (bf[4]) & 7;
a->lrpcs.region_mask = bf[5];
a->lrpcs.rpc_scheme = bf[6];
return (0);

case DVD_HOST_SEND_RPC_STATE:
cmd.opcode = GPCMD_SEND_KEY;
cmd.bytes[8] = 8;
cmd.bytes[9] = 6 | (0 << 6);
bf[1] = 6;
bf[4] = a->hrpcs.pdrc;
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 8,
CDRETRIES, 30000, NULL, XS_CTL_DATA_OUT);
if (error)
return (error);
return (0);

default:
return (ENOTTY);
}
}

static int
dvd_read_physical(struct cd_softc *cd, dvd_struct *s)
{
struct scsipi_generic cmd;
u_int8_t bf[4 + 4 * 20], *bufp;
int error;
struct dvd_layer *layer;
int i;

memset(cmd.bytes, 0, 15);
memset(bf, 0, sizeof(bf));
cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
cmd.bytes[6] = s->type;
_lto2b(sizeof(bf), &cmd.bytes[7]);

cmd.bytes[5] = s->physical.layer_num;
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error)
return (error);
for (i = 0, bufp = &bf[4], layer = &s->physical.layer[0]; i < 4;
i++, bufp += 20, layer++) {
memset(layer, 0, sizeof(*layer));
layer->book_version = bufp[0] & 0xf;
layer->book_type = bufp[0] >> 4;
layer->min_rate = bufp[1] & 0xf;
layer->disc_size = bufp[1] >> 4;
layer->layer_type = bufp[2] & 0xf;
layer->track_path = (bufp[2] >> 4) & 1;
layer->nlayers = (bufp[2] >> 5) & 3;
layer->track_density = bufp[3] & 0xf;
layer->linear_density = bufp[3] >> 4;
layer->start_sector = _4btol(&bufp[4]);
layer->end_sector = _4btol(&bufp[8]);
layer->end_sector_l0 = _4btol(&bufp[12]);
layer->bca = bufp[16] >> 7;
}
return (0);
}

static int
dvd_read_copyright(struct cd_softc *cd, dvd_struct *s)
{
struct scsipi_generic cmd;
u_int8_t bf[8];
int error;

memset(cmd.bytes, 0, 15);
memset(bf, 0, sizeof(bf));
cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
cmd.bytes[6] = s->type;
_lto2b(sizeof(bf), &cmd.bytes[7]);

cmd.bytes[5] = s->copyright.layer_num;
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error)
return (error);
s->copyright.cpst = bf[4];
s->copyright.rmi = bf[5];
return (0);
}

static int
dvd_read_disckey(struct cd_softc *cd, dvd_struct *s)
{
struct scsipi_generic cmd;
u_int8_t *bf;
int error;

bf = malloc(4 + 2048, M_TEMP, M_WAITOK|M_ZERO);
if (bf == NULL)
return EIO;
memset(cmd.bytes, 0, 15);
cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
cmd.bytes[6] = s->type;
_lto2b(4 + 2048, &cmd.bytes[7]);

cmd.bytes[9] = s->disckey.agid << 6;
error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 4 + 2048,
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error == 0)
memcpy(s->disckey.value, &bf[4], 2048);
free(bf, M_TEMP);
return error;
}

static int
dvd_read_bca(struct cd_softc *cd, dvd_struct *s)
{
struct scsipi_generic cmd;
u_int8_t bf[4 + 188];
int error;

memset(cmd.bytes, 0, 15);
memset(bf, 0, sizeof(bf));
cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
cmd.bytes[6] = s->type;
_lto2b(sizeof(bf), &cmd.bytes[7]);

error = scsipi_command(cd->sc_periph, &cmd, 12, bf, sizeof(bf),
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error)
return (error);
s->bca.len = _2btol(&bf[0]);
if (s->bca.len < 12 || s->bca.len > 188)
return (EIO);
memcpy(s->bca.value, &bf[4], s->bca.len);
return (0);
}

static int
dvd_read_manufact(struct cd_softc *cd, dvd_struct *s)
{
struct scsipi_generic cmd;
u_int8_t *bf;
int error;

bf = malloc(4 + 2048, M_TEMP, M_WAITOK|M_ZERO);
if (bf == NULL)
return (EIO);
memset(cmd.bytes, 0, 15);
cmd.opcode = GPCMD_READ_DVD_STRUCTURE;
cmd.bytes[6] = s->type;
_lto2b(4 + 2048, &cmd.bytes[7]);

error = scsipi_command(cd->sc_periph, &cmd, 12, bf, 4 + 2048,
CDRETRIES, 30000, NULL, XS_CTL_DATA_IN);
if (error == 0) {
s->manufact.len = _2btol(&bf[0]);
if (s->manufact.len >= 0 && s->manufact.len <= 2048)
memcpy(s->manufact.value, &bf[4], s->manufact.len);
else
error = EIO;
}
free(bf, M_TEMP);
return error;
}

static int
dvd_read_struct(struct cd_softc *cd, dvd_struct *s)
{

switch (s->type) {
case DVD_STRUCT_PHYSICAL:
return (dvd_read_physical(cd, s));
case DVD_STRUCT_COPYRIGHT:
return (dvd_read_copyright(cd, s));
case DVD_STRUCT_DISCKEY:
return (dvd_read_disckey(cd, s));
case DVD_STRUCT_BCA:
return (dvd_read_bca(cd, s));
case DVD_STRUCT_MANUFACT:
return (dvd_read_manufact(cd, s));
default:
return (EINVAL);
}
}

static int
cd_mode_sense(struct cd_softc *cd, u_int8_t byte2, void *sense, size_t size,
int page, int flags, int *big)
{

if (cd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) {
*big = 1;
return scsipi_mode_sense_big(cd->sc_periph, byte2, page, sense,
size + sizeof(struct scsi_mode_parameter_header_10),
flags, CDRETRIES, 20000);
} else {
*big = 0;
return scsipi_mode_sense(cd->sc_periph, byte2, page, sense,
size + sizeof(struct scsi_mode_parameter_header_6),
flags, CDRETRIES, 20000);
}
}

static int
cd_mode_select(struct cd_softc *cd, u_int8_t byte2, void *sense, size_t size,
int flags, int big)
{

if (big) {
struct scsi_mode_parameter_header_10 *header = sense;

_lto2b(0, header->data_length);
return scsipi_mode_select_big(cd->sc_periph, byte2, sense,
size + sizeof(struct scsi_mode_parameter_header_10),
flags, CDRETRIES, 20000);
} else {
struct scsi_mode_parameter_header_6 *header = sense;

header->data_length = 0;
return scsipi_mode_select(cd->sc_periph, byte2, sense,
size + sizeof(struct scsi_mode_parameter_header_6),
flags, CDRETRIES, 20000);
}
}

static int
cd_set_pa_immed(struct cd_softc *cd, int flags)
{
struct {
union {
struct scsi_mode_parameter_header_6 small;
struct scsi_mode_parameter_header_10 big;
} header;
struct cd_audio_page page;
} data;
int error;
uint8_t oflags;
int big, byte2;
struct cd_audio_page *page;

byte2 = SMS_DBD;
try_again:
if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
AUDIO_PAGE, flags, &big)) != 0) {
if (byte2 == SMS_DBD) {
/* Device may not understand DBD; retry without */
byte2 = 0;
goto try_again;
}
return (error);
}

if (big)
page = (void *)((u_long)&data.header.big +
sizeof data.header.big +
_2btol(data.header.big.blk_desc_len));
else
page = (void *)((u_long)&data.header.small +
sizeof data.header.small +
data.header.small.blk_desc_len);

oflags = page->flags;
page->flags &= ~CD_PA_SOTC;
page->flags |= CD_PA_IMMED;
if (oflags == page->flags)
return (0);

return (cd_mode_select(cd, SMS_PF, &data,
sizeof(struct scsi_mode_page_header) + page->pg_length,
flags, big));
}

static int
cd_setchan(struct cd_softc *cd, int p0, int p1, int p2, int p3, int flags)
{
struct {
union {
struct scsi_mode_parameter_header_6 small;
struct scsi_mode_parameter_header_10 big;
} header;
struct cd_audio_page page;
} data;
int error;
int big, byte2;
struct cd_audio_page *page;

byte2 = SMS_DBD;
try_again:
if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
AUDIO_PAGE, flags, &big)) != 0) {
if (byte2 == SMS_DBD) {
/* Device may not understand DBD; retry without */
byte2 = 0;
goto try_again;
}
return (error);
}

if (big)
page = (void *)((u_long)&data.header.big +
sizeof data.header.big +
_2btol(data.header.big.blk_desc_len));
else
page = (void *)((u_long)&data.header.small +
sizeof data.header.small +
data.header.small.blk_desc_len);

page->port[0].channels = p0;
page->port[1].channels = p1;
page->port[2].channels = p2;
page->port[3].channels = p3;

return (cd_mode_select(cd, SMS_PF, &data,
sizeof(struct scsi_mode_page_header) + page->pg_length,
flags, big));
}

static int
cd_getvol(struct cd_softc *cd, struct ioc_vol *arg, int flags)
{
struct {
union {
struct scsi_mode_parameter_header_6 small;
struct scsi_mode_parameter_header_10 big;
} header;
struct cd_audio_page page;
} data;
int error;
int big, byte2;
struct cd_audio_page *page;

byte2 = SMS_DBD;
try_again:
if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
AUDIO_PAGE, flags, &big)) != 0) {
if (byte2 == SMS_DBD) {
/* Device may not understand DBD; retry without */
byte2 = 0;
goto try_again;
}
return (error);
}

if (big)
page = (void *)((u_long)&data.header.big +
sizeof data.header.big +
_2btol(data.header.big.blk_desc_len));
else
page = (void *)((u_long)&data.header.small +
sizeof data.header.small +
data.header.small.blk_desc_len);

arg->vol[0] = page->port[0].volume;
arg->vol[1] = page->port[1].volume;
arg->vol[2] = page->port[2].volume;
arg->vol[3] = page->port[3].volume;

return (0);
}

static int
cd_setvol(struct cd_softc *cd, const struct ioc_vol *arg, int flags)
{
struct {
union {
struct scsi_mode_parameter_header_6 small;
struct scsi_mode_parameter_header_10 big;
} header;
struct cd_audio_page page;
} data, mask;
int error;
int big, byte2;
struct cd_audio_page *page, *page2;

byte2 = SMS_DBD;
try_again:
if ((error = cd_mode_sense(cd, byte2, &data, sizeof(data.page),
AUDIO_PAGE, flags, &big)) != 0) {
if (byte2 == SMS_DBD) {
/* Device may not understand DBD; retry without */
byte2 = 0;
goto try_again;
}
return (error);
}
if ((error = cd_mode_sense(cd, byte2, &mask, sizeof(mask.page),
AUDIO_PAGE|SMS_PCTRL_CHANGEABLE, flags, &big)) != 0)
return (error);

if (big) {
page = (void *)((u_long)&data.header.big +
sizeof data.header.big +
_2btol(data.header.big.blk_desc_len));
page2 = (void *)((u_long)&mask.header.big +
sizeof mask.header.big +
_2btol(mask.header.big.blk_desc_len));
} else {
page = (void *)((u_long)&data.header.small +
sizeof data.header.small +
data.header.small.blk_desc_len);
page2 = (void *)((u_long)&mask.header.small +
sizeof mask.header.small +
mask.header.small.blk_desc_len);
}

page->port[0].volume = arg->vol[0] & page2->port[0].volume;
page->port[1].volume = arg->vol[1] & page2->port[1].volume;
page->port[2].volume = arg->vol[2] & page2->port[2].volume;
page->port[3].volume = arg->vol[3] & page2->port[3].volume;

page->port[0].channels = CHANNEL_0;
page->port[1].channels = CHANNEL_1;

return (cd_mode_select(cd, SMS_PF, &data,
sizeof(struct scsi_mode_page_header) + page->pg_length,
flags, big));
}

static int
cd_load_unload(struct cd_softc *cd, struct ioc_load_unload *args)
{
struct scsipi_load_unload cmd;

memset(&cmd, 0, sizeof(cmd));
cmd.opcode = LOAD_UNLOAD;
cmd.options = args->options; /* ioctl uses MMC values */
cmd.slot = args->slot;

return (scsipi_command(cd->sc_periph, (void *)&cmd, sizeof(cmd), 0, 0,
CDRETRIES, 200000, NULL, 0));
}

static int
cd_setblksize(struct cd_softc *cd)
{
struct {
union {
struct scsi_mode_parameter_header_6 small;
struct scsi_mode_parameter_header_10 big;
} header;
struct scsi_general_block_descriptor blk_desc;
} data;
int error;
int big, bsize;
struct scsi_general_block_descriptor *bdesc;

if ((error = cd_mode_sense(cd, 0, &data, sizeof(data.blk_desc), 0, 0,
&big)) != 0)
return (error);

if (big) {
bdesc = (void *)(&data.header.big + 1);
bsize = _2btol(data.header.big.blk_desc_len);
} else {
bdesc = (void *)(&data.header.small + 1);
bsize = data.header.small.blk_desc_len;
}

if (bsize == 0) {
printf("cd_setblksize: trying to change bsize, but no blk_desc\n");

return (EINVAL);
}
if (_3btol(bdesc->blklen) == 2048) {
printf("cd_setblksize: trying to change bsize, but blk_desc is correct\n");
return (EINVAL);
}

_lto3b(2048, bdesc->blklen);

return (cd_mode_select(cd, SMS_PF, &data, sizeof(data.blk_desc), 0,
big));
}

static int
mmc_profile2class(uint16_t mmc_profile)
{
switch (mmc_profile) {
case 0x01 : /* SCSI discs */
case 0x02 :
/* this can't happen really, cd.c wouldn't have matched */
return MMC_CLASS_DISC;
case 0x03 : /* Magneto Optical with sector erase */
case 0x04 : /* Magneto Optical write once */
case 0x05 : /* Advance Storage Magneto Optical */
return MMC_CLASS_MO;
case 0x00 : /* Unknown MMC profile, can also be CD-ROM */
case 0x08 : /* CD-ROM */
case 0x09 : /* CD-R */
case 0x0a : /* CD-RW */
return MMC_CLASS_CD;
case 0x10 : /* DVD-ROM */
case 0x11 : /* DVD-R */
case 0x12 : /* DVD-RAM */
case 0x13 : /* DVD-RW restricted overwrite */
case 0x14 : /* DVD-RW sequential */
case 0x1a : /* DVD+RW */
case 0x1b : /* DVD+R */
case 0x2a : /* DVD+RW Dual layer */
case 0x2b : /* DVD+R Dual layer */
case 0x50 : /* HD DVD-ROM */
case 0x51 : /* HD DVD-R */
case 0x52 : /* HD DVD-RW; DVD-RAM like */
return MMC_CLASS_DVD;
case 0x40 : /* BD-ROM */
case 0x41 : /* BD-R Sequential recording (SRM) */
case 0x42 : /* BD-R Random Recording (RRM) */
case 0x43 : /* BD-RE */
return MMC_CLASS_BD;
}
return MMC_CLASS_UNKN;
}

/*
* Drive/media combination is reflected in a series of features that can
* either be current or dormant. We try to make sense out of them to create a
* set of easy to use flags that abstract the device/media capabilities.
*/

static void
mmc_process_feature(struct mmc_discinfo *mmc_discinfo,
uint16_t feature, int cur, uint8_t *rpos)
{
uint32_t blockingnr;
uint64_t flags;

if (cur == 1) {
flags = mmc_discinfo->mmc_cur;
} else {
flags = mmc_discinfo->mmc_cap;
}

switch (feature) {
case 0x0010 : /* random readable feature */
blockingnr = rpos[5] | (rpos[4] << 8);
if (blockingnr > 1)
flags |= MMC_CAP_PACKET;

/* RW error page */
break;
case 0x0020 : /* random writable feature */
flags |= MMC_CAP_RECORDABLE;
flags |= MMC_CAP_REWRITABLE;
blockingnr = rpos[9] | (rpos[8] << 8);
if (blockingnr > 1)
flags |= MMC_CAP_PACKET;
break;
case 0x0021 : /* incremental streaming write feature */
flags |= MMC_CAP_RECORDABLE;
flags |= MMC_CAP_SEQUENTIAL;
if (cur)
mmc_discinfo->link_block_penalty = rpos[4];
if (rpos[2] & 1)
flags |= MMC_CAP_ZEROLINKBLK;
break;
case 0x0022 : /* (obsolete) erase support feature */
flags |= MMC_CAP_RECORDABLE;
flags |= MMC_CAP_ERASABLE;
break;
case 0x0023 : /* formatting media support feature */
flags |= MMC_CAP_RECORDABLE;
flags |= MMC_CAP_FORMATTABLE;
break;
case 0x0024 : /* hardware assisted defect management feature */
flags |= MMC_CAP_HW_DEFECTFREE;
break;
case 0x0025 : /* write once */
flags |= MMC_CAP_RECORDABLE;
break;
case 0x0026 : /* restricted overwrite feature */
flags |= MMC_CAP_RECORDABLE;
flags |= MMC_CAP_REWRITABLE;
flags |= MMC_CAP_STRICTOVERWRITE;
break;
case 0x0028 : /* MRW formatted media support feature */
flags |= MMC_CAP_MRW;
break;
case 0x002b : /* DVD+R read (and opt. write) support */
flags |= MMC_CAP_SEQUENTIAL;
if (rpos[0] & 1) /* write support */
flags |= MMC_CAP_RECORDABLE;
break;
case 0x002c : /* rigid restricted overwrite feature */
flags |= MMC_CAP_RECORDABLE;
flags |= MMC_CAP_REWRITABLE;
flags |= MMC_CAP_STRICTOVERWRITE;
if (rpos[0] & 1) /* blank bit */
flags |= MMC_CAP_BLANKABLE;
break;
case 0x002d : /* track at once recording feature */
flags |= MMC_CAP_RECORDABLE;
flags |= MMC_CAP_SEQUENTIAL;
break;
case 0x002f : /* DVD-R/-RW write feature */
flags |= MMC_CAP_RECORDABLE;
if (rpos[0] & 2) /* DVD-RW bit */
flags |= MMC_CAP_BLANKABLE;
break;
case 0x0038 : /* BD-R SRM with pseudo overwrite */
flags |= MMC_CAP_PSEUDOOVERWRITE;
break;
default :
/* ignore */
break;
}

if (cur == 1) {
mmc_discinfo->mmc_cur = flags;
} else {
mmc_discinfo->mmc_cap = flags;
}
}

static int
mmc_getdiscinfo_cdrom(struct scsipi_periph *periph,
struct mmc_discinfo *mmc_discinfo)
{
struct scsipi_read_toc gtoc_cmd;
struct scsipi_toc_header *toc_hdr;
struct scsipi_toc_msinfo *toc_msinfo;
const uint32_t buffer_size = 1024;
uint32_t req_size;
uint8_t *buffer;
int error, flags;

buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
/*
* Fabricate mmc_discinfo for CD-ROM. Some values are really `dont
* care' but others might be of interest to programs.
*/

mmc_discinfo->disc_state = MMC_STATE_FULL;
mmc_discinfo->last_session_state = MMC_STATE_FULL;
mmc_discinfo->bg_format_state = MMC_BGFSTATE_COMPLETED;
mmc_discinfo->link_block_penalty = 7; /* not relevant */

/* get number of sessions and first tracknr in last session */
flags = XS_CTL_DATA_IN;
memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
gtoc_cmd.opcode = READ_TOC;
gtoc_cmd.addr_mode = CD_MSF; /* not relevant */
gtoc_cmd.resp_format = CD_TOC_MSINFO; /* multisession info */
gtoc_cmd.from_track = 0; /* reserved, must be 0 */
req_size = sizeof(*toc_hdr) + sizeof(*toc_msinfo);
_lto2b(req_size, gtoc_cmd.data_len);

error = scsipi_command(periph,
(void *)&gtoc_cmd, sizeof(gtoc_cmd),
(void *)buffer, req_size,
CDRETRIES, 30000, NULL, flags);
if (error)
goto out;
toc_hdr = (struct scsipi_toc_header *) buffer;
toc_msinfo = (struct scsipi_toc_msinfo *) (buffer + 4);
mmc_discinfo->num_sessions = toc_hdr->last - toc_hdr->first + 1;
mmc_discinfo->first_track = toc_hdr->first;
mmc_discinfo->first_track_last_session = toc_msinfo->tracknr;

/* get last track of last session */
flags = XS_CTL_DATA_IN;
gtoc_cmd.resp_format = CD_TOC_FORM; /* formatted toc */
req_size = sizeof(*toc_hdr);
_lto2b(req_size, gtoc_cmd.data_len);

error = scsipi_command(periph,
(void *)&gtoc_cmd, sizeof(gtoc_cmd),
(void *)buffer, req_size,
CDRETRIES, 30000, NULL, flags);
if (error)
goto out;
toc_hdr = (struct scsipi_toc_header *) buffer;
mmc_discinfo->last_track_last_session = toc_hdr->last;
mmc_discinfo->num_tracks = toc_hdr->last - toc_hdr->first + 1;

/* TODO how to handle disc_barcode and disc_id */
/* done */

out:
free(buffer, M_TEMP);
return error;
}

static int
mmc_getdiscinfo_dvdrom(struct scsipi_periph *periph,
struct mmc_discinfo *mmc_discinfo)
{
struct scsipi_read_toc gtoc_cmd;
struct scsipi_toc_header toc_hdr;
uint32_t req_size;
int error, flags;

/*
* Fabricate mmc_discinfo for DVD-ROM. Some values are really `dont
* care' but others might be of interest to programs.
*/

mmc_discinfo->disc_state = MMC_STATE_FULL;
mmc_discinfo->last_session_state = MMC_STATE_FULL;
mmc_discinfo->bg_format_state = MMC_BGFSTATE_COMPLETED;
mmc_discinfo->link_block_penalty = 16; /* not relevant */

/* get number of sessions and first tracknr in last session */
flags = XS_CTL_DATA_IN;
memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
gtoc_cmd.opcode = READ_TOC;
gtoc_cmd.addr_mode = 0; /* LBA */
gtoc_cmd.resp_format = CD_TOC_FORM; /* multisession info */
gtoc_cmd.from_track = 1; /* first track */
req_size = sizeof(toc_hdr);
_lto2b(req_size, gtoc_cmd.data_len);

error = scsipi_command(periph,
(void *)&gtoc_cmd, sizeof(gtoc_cmd),
(void *)&toc_hdr, req_size,
CDRETRIES, 30000, NULL, flags);
if (error)
return error;

/* DVD-ROM squashes the track/session space */
mmc_discinfo->num_sessions = toc_hdr.last - toc_hdr.first + 1;
mmc_discinfo->num_tracks = mmc_discinfo->num_sessions;
mmc_discinfo->first_track = toc_hdr.first;
mmc_discinfo->first_track_last_session = toc_hdr.last;
mmc_discinfo->last_track_last_session = toc_hdr.last;

/* TODO how to handle disc_barcode and disc_id */
/* done */
return 0;
}

static int
mmc_getdiscinfo(struct scsipi_periph *periph,
struct mmc_discinfo *mmc_discinfo)
{
struct scsipi_get_configuration gc_cmd;
struct scsipi_get_conf_data *gc;
struct scsipi_get_conf_feature *gcf;
struct scsipi_read_discinfo di_cmd;
struct scsipi_read_discinfo_data di __aligned(2);
const uint32_t buffer_size = 0x200; /* XXX RPZ USB3 SCSI size issue */
uint32_t pos;
u_long last_lba = 0;
uint8_t *buffer, *fpos;
int feature, last_feature, features_len, feature_cur, feature_len;
int lsb, msb, error, flags;

buffer = malloc(buffer_size, M_TEMP, M_WAITOK);

/* initialise structure */
memset(mmc_discinfo, 0, sizeof(struct mmc_discinfo));
mmc_discinfo->mmc_profile = 0x00; /* unknown */
mmc_discinfo->mmc_class = MMC_CLASS_UNKN;
mmc_discinfo->mmc_cur = 0;
mmc_discinfo->mmc_cap = 0;
mmc_discinfo->link_block_penalty = 0;

/* determine mmc profile and class */
flags = XS_CTL_DATA_IN;
memset(&gc_cmd, 0, sizeof(gc_cmd));
gc_cmd.opcode = GET_CONFIGURATION;
_lto2b(GET_CONF_NO_FEATURES_LEN, gc_cmd.data_len);

gc = (struct scsipi_get_conf_data *) buffer;

error = scsipi_command(periph,
(void *)&gc_cmd, sizeof(gc_cmd),
(void *) gc, GET_CONF_NO_FEATURES_LEN,
CDRETRIES, 30000, NULL, flags);
if (error)
goto out;

mmc_discinfo->mmc_profile = _2btol(gc->mmc_profile);
mmc_discinfo->mmc_class = mmc_profile2class(mmc_discinfo->mmc_profile);

/* assume 2048 sector size unless told otherwise */
mmc_discinfo->sector_size = 2048;
error = read_cd_capacity(periph, &mmc_discinfo->sector_size, &last_lba);
if (error)
goto out;

mmc_discinfo->last_possible_lba = (uint32_t) last_lba;

/* Read in all features to determine device capabilities */
last_feature = feature = 0;
do {
/* determine mmc profile and class */
flags = XS_CTL_DATA_IN;
memset(&gc_cmd, 0, sizeof(gc_cmd));
gc_cmd.opcode = GET_CONFIGURATION;
_lto2b(last_feature, gc_cmd.start_at_feature);
_lto2b(buffer_size, gc_cmd.data_len);
memset(gc, 0, buffer_size);

error = scsipi_command(periph,
(void *)&gc_cmd, sizeof(gc_cmd),
(void *) gc, buffer_size,
CDRETRIES, 30000, NULL, flags);
if (error) {
/* ieeek... break out of loop... i dunno what to do */
break;
}

features_len = _4btol(gc->data_len);
if (features_len < 4 || features_len > buffer_size)
break;

pos = 0;
fpos = &gc->feature_desc[0];
while (pos < features_len - 4) {
gcf = (struct scsipi_get_conf_feature *) fpos;

feature = _2btol(gcf->featurecode);
feature_cur = gcf->flags & 1;
feature_len = gcf->additional_length;

mmc_process_feature(mmc_discinfo,
feature, feature_cur,
gcf->feature_dependent);

last_feature = MAX(last_feature, feature);
#ifdef DIAGNOSTIC
/* assert((feature_len & 3) == 0); */
if ((feature_len & 3) != 0) {
printf("feature %d having length %d\n",
feature, feature_len);
}
#endif

pos += 4 + feature_len;
fpos += 4 + feature_len;
}
/* unlikely to ever grow past our 1kb buffer */
} while (features_len >= 0xffff);

/*
* Fixup CD-RW drives that are on crack.
*
* Some drives report the capability to incrementally write
* sequentially on CD-R(W) media... nice, but this should not be
* active for a fixed packet formatted CD-RW media. Other report the
* ability of HW_DEFECTFREE even when the media is NOT MRW
* formatted....
*/
if (mmc_discinfo->mmc_profile == 0x0a) {
if ((mmc_discinfo->mmc_cur & MMC_CAP_SEQUENTIAL) == 0)
mmc_discinfo->mmc_cur |= MMC_CAP_STRICTOVERWRITE;
if (mmc_discinfo->mmc_cur & MMC_CAP_STRICTOVERWRITE)
mmc_discinfo->mmc_cur &= ~MMC_CAP_SEQUENTIAL;
if (mmc_discinfo->mmc_cur & MMC_CAP_MRW) {
mmc_discinfo->mmc_cur &= ~MMC_CAP_SEQUENTIAL;
mmc_discinfo->mmc_cur &= ~MMC_CAP_STRICTOVERWRITE;
} else {
mmc_discinfo->mmc_cur &= ~MMC_CAP_HW_DEFECTFREE;
}
}
if (mmc_discinfo->mmc_profile == 0x09) {
mmc_discinfo->mmc_cur &= ~MMC_CAP_REWRITABLE;
}

#ifdef DEBUG
printf("CD mmc %d, mmc_cur 0x%"PRIx64", mmc_cap 0x%"PRIx64"\n",
mmc_discinfo->mmc_profile,
mmc_discinfo->mmc_cur, mmc_discinfo->mmc_cap);
#endif

/* read in disc state and number of sessions and tracks */
flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
memset(&di_cmd, 0, sizeof(di_cmd));
di_cmd.opcode = READ_DISCINFO;
di_cmd.data_len[1] = READ_DISCINFO_BIGSIZE;

error = scsipi_command(periph,
(void *)&di_cmd, sizeof(di_cmd),
(void *)&di, READ_DISCINFO_BIGSIZE,
CDRETRIES, 30000, NULL, flags);

if (error) {
/* discinfo call failed, emulate for cd-rom/dvd-rom */
if (mmc_discinfo->mmc_profile == 0x08) /* CD-ROM */
error = mmc_getdiscinfo_cdrom(periph, mmc_discinfo);
else if (mmc_discinfo->mmc_profile == 0x10) /* DVD-ROM */
error = mmc_getdiscinfo_dvdrom(periph, mmc_discinfo);
else /* CD/DVD drive is violating specs */
error = EIO;
goto out;
}

/* call went OK */
mmc_discinfo->disc_state = di.disc_state & 3;
mmc_discinfo->last_session_state = (di.disc_state >> 2) & 3;
mmc_discinfo->bg_format_state = (di.disc_state2 & 3);

lsb = di.num_sessions_lsb;
msb = di.num_sessions_msb;
mmc_discinfo->num_sessions = lsb | (msb << 8);

mmc_discinfo->first_track = di.first_track;
lsb = di.first_track_last_session_lsb;
msb = di.first_track_last_session_msb;
mmc_discinfo->first_track_last_session = lsb | (msb << 8);
lsb = di.last_track_last_session_lsb;
msb = di.last_track_last_session_msb;
mmc_discinfo->last_track_last_session = lsb | (msb << 8);

mmc_discinfo->num_tracks = mmc_discinfo->last_track_last_session -
mmc_discinfo->first_track + 1;

/* set misc. flags and parameters from this disc info */
if (di.disc_state & 16)
mmc_discinfo->mmc_cur |= MMC_CAP_BLANKABLE;

if (di.disc_state2 & 128) {
mmc_discinfo->disc_id = _4btol(di.discid);
mmc_discinfo->disc_flags |= MMC_DFLAGS_DISCIDVALID;
}
if (di.disc_state2 & 64) {
mmc_discinfo->disc_barcode = _8btol(di.disc_bar_code);
mmc_discinfo->disc_flags |= MMC_DFLAGS_BARCODEVALID;
}
if (di.disc_state2 & 32)
mmc_discinfo->disc_flags |= MMC_DFLAGS_UNRESTRICTED;

if (di.disc_state2 & 16) {
mmc_discinfo->application_code = di.application_code;
mmc_discinfo->disc_flags |= MMC_DFLAGS_APPCODEVALID;
}

/* done */

out:
free(buffer, M_TEMP);
return error;
}

static int
mmc_gettrackinfo_cdrom(struct scsipi_periph *periph,
struct mmc_trackinfo *trackinfo)
{
struct scsipi_read_toc gtoc_cmd;
struct scsipi_toc_header *toc_hdr;
struct scsipi_toc_rawtoc *rawtoc;
uint32_t track_start, track_size;
uint32_t last_recorded, next_writable;
uint32_t lba, next_track_start, lead_out;
const uint32_t buffer_size = 4 * 1024; /* worst case TOC estimate */
uint8_t *buffer;
uint8_t track_sessionnr, sessionnr, adr, tno, point;
uint8_t control, tmin, tsec, tframe, pmin, psec, pframe;
int size, req_size;
int error, flags;

buffer = malloc(buffer_size, M_TEMP, M_WAITOK);

/*
* Emulate read trackinfo for CD-ROM using the raw-TOC.
*
* Not all information is present and this presents a problem. Track
* starts are known for each track but other values are deducted.
*
* For a complete overview of `magic' values used here, see the
* SCSI/ATAPI MMC documentation. Note that the `magic' values have no
* names, they are specified as numbers.
*/

/* get raw toc to process, first header to check size */
flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
gtoc_cmd.opcode = READ_TOC;
gtoc_cmd.addr_mode = CD_MSF; /* not relevant */
gtoc_cmd.resp_format = CD_TOC_RAW; /* raw toc */
gtoc_cmd.from_track = 1; /* first session */
req_size = sizeof(*toc_hdr);
_lto2b(req_size, gtoc_cmd.data_len);

error = scsipi_command(periph,
(void *)&gtoc_cmd, sizeof(gtoc_cmd),
(void *)buffer, req_size,
CDRETRIES, 30000, NULL, flags);
if (error)
goto out;
toc_hdr = (struct scsipi_toc_header *) buffer;
if (_2btol(toc_hdr->length) > buffer_size - 2) {
#ifdef DIAGNOSTIC
printf("increase buffersize in mmc_readtrackinfo_cdrom\n");
#endif
error = ENOBUFS;
goto out;
}

/* read in complete raw toc */
req_size = _2btol(toc_hdr->length);
req_size = 2*((req_size + 1) / 2); /* for ATAPI */
_lto2b(req_size, gtoc_cmd.data_len);

error = scsipi_command(periph,
(void *)&gtoc_cmd, sizeof(gtoc_cmd),
(void *)buffer, req_size,
CDRETRIES, 30000, NULL, flags);
if (error)
goto out;

toc_hdr = (struct scsipi_toc_header *) buffer;
rawtoc = (struct scsipi_toc_rawtoc *) (buffer + 4);

track_start = 0;
track_size = 0;
last_recorded = 0;
next_writable = 0;
flags = 0;

next_track_start = 0;
track_sessionnr = MAXTRACK; /* by definition */
lead_out = 0;

size = req_size - sizeof(struct scsipi_toc_header) + 1;
while (size > 0) {
/* get track start and session end */
tno = rawtoc->tno;
sessionnr = rawtoc->sessionnr;
adr = rawtoc->adrcontrol >> 4;
control = rawtoc->adrcontrol & 0xf;
point = rawtoc->point;
tmin = rawtoc->min;
tsec = rawtoc->sec;
tframe = rawtoc->frame;
pmin = rawtoc->pmin;
psec = rawtoc->psec;
pframe = rawtoc->pframe;

if (tno == 0 && sessionnr && adr == 1) {
lba = hmsf2lba(0, pmin, psec, pframe);
if (point == trackinfo->tracknr) {
track_start = lba;
track_sessionnr = sessionnr;
}
if (point == trackinfo->tracknr + 1) {
/* estimate size */
track_size = lba - track_start;
next_track_start = lba;
}
if (point == 0xa2) {
lead_out = lba;
}
if (point <= 0x63) {
/* CD's ok, DVD are glued */
/* last_tracknr = point; */
}
if (sessionnr == track_sessionnr) {
last_recorded = lead_out;
}
}
if (tno == 0 && sessionnr && adr == 5) {
lba = hmsf2lba(0, tmin, tsec, tframe);
if (sessionnr == track_sessionnr) {
next_writable = lba;
}
}

if ((control & (3<<2)) == 4) /* 01xxb */
flags |= MMC_TRACKINFO_DATA;
if ((control & (1<<2)) == 0) { /* x0xxb */
flags |= MMC_TRACKINFO_AUDIO;
if (control & 1) /* xxx1b */
flags |= MMC_TRACKINFO_PRE_EMPH;
}

rawtoc++;
size -= sizeof(struct scsipi_toc_rawtoc);
}

/* process found values; some voodoo */
/* if no tracksize tracknr is the last of the disc */
if ((track_size == 0) && last_recorded) {
track_size = last_recorded - track_start;
}
/* if last_recorded < tracksize, tracksize is overestimated */
if (last_recorded) {
if (last_recorded - track_start <= track_size) {
track_size = last_recorded - track_start;
flags |= MMC_TRACKINFO_LRA_VALID;
}
}
/* check if its a the last track of the sector */
if (next_writable) {
if (next_track_start > next_writable)
flags |= MMC_TRACKINFO_NWA_VALID;
}

/* no flag set -> no values */
if ((flags & MMC_TRACKINFO_LRA_VALID) == 0)
last_recorded = 0;
if ((flags & MMC_TRACKINFO_NWA_VALID) == 0)
next_writable = 0;

/* fill in */
/* trackinfo->tracknr preserved */
trackinfo->sessionnr = track_sessionnr;
trackinfo->track_mode = 7; /* data, incremental */
trackinfo->data_mode = 8; /* 2048 bytes mode1 */

trackinfo->flags = flags;
trackinfo->track_start = track_start;
trackinfo->next_writable = next_writable;
trackinfo->free_blocks = 0;
trackinfo->packet_size = 1;
trackinfo->track_size = track_size;
trackinfo->last_recorded = last_recorded;

out:
free(buffer, M_TEMP);
return error;

}

static int
mmc_gettrackinfo_dvdrom(struct scsipi_periph *periph,
struct mmc_trackinfo *trackinfo)
{
struct scsipi_read_toc gtoc_cmd;
struct scsipi_toc_header *toc_hdr;
struct scsipi_toc_formatted *toc;
uint32_t tracknr, track_start, track_size;
uint32_t lba, lead_out;
const uint32_t buffer_size = 4 * 1024; /* worst case TOC estimate */
uint8_t *buffer;
uint8_t control, last_tracknr;
int size, req_size;
int error, flags;

buffer = malloc(buffer_size, M_TEMP, M_WAITOK);
/*
* Emulate read trackinfo for DVD-ROM. We can't use the raw-TOC as the
* CD-ROM emulation uses since the specification tells us that no such
* thing is defined for DVD's. The reason for this is due to the large
* number of tracks and that would clash with the `magic' values. This
* suxs.
*
* Not all information is present and this presents a problem.
* Track starts are known for each track but other values are
* deducted.
*/

/* get formatted toc to process, first header to check size */
flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
memset(&gtoc_cmd, 0, sizeof(gtoc_cmd));
gtoc_cmd.opcode = READ_TOC;
gtoc_cmd.addr_mode = 0; /* lba's please */
gtoc_cmd.resp_format = CD_TOC_FORM; /* formatted toc */
gtoc_cmd.from_track = 1; /* first track */
req_size = sizeof(*toc_hdr);
_lto2b(req_size, gtoc_cmd.data_len);

error = scsipi_command(periph,
(void *)&gtoc_cmd, sizeof(gtoc_cmd),
(void *)buffer, req_size,
CDRETRIES, 30000, NULL, flags);
if (error)
goto out;
toc_hdr = (struct scsipi_toc_header *) buffer;
if (_2btol(toc_hdr->length) > buffer_size - 2) {
#ifdef DIAGNOSTIC
printf("increase buffersize in mmc_readtrackinfo_dvdrom\n");
#endif
error = ENOBUFS;
goto out;
}

/* read in complete formatted toc */
req_size = _2btol(toc_hdr->length);
_lto2b(req_size, gtoc_cmd.data_len);

error = scsipi_command(periph,
(void *)&gtoc_cmd, sizeof(gtoc_cmd),
(void *)buffer, req_size,
CDRETRIES, 30000, NULL, flags);
if (error)
goto out;

toc_hdr = (struct scsipi_toc_header *) buffer;
toc = (struct scsipi_toc_formatted *) (buffer + 4);

/* as in read disc info, all sessions are converted to tracks */
/* track 1.. -> offsets, sizes can be (roughly) estimated (16 ECC) */
/* last track -> we got the size from the lead-out */

tracknr = 0;
last_tracknr = toc_hdr->last;
track_start = 0;
track_size = 0;
lead_out = 0;
flags = 0;

size = req_size - sizeof(struct scsipi_toc_header) + 1;
while (size > 0) {
/* remember, DVD-ROM: tracknr == sessionnr */
lba = _4btol(toc->msf_lba);
tracknr = toc->tracknr;
control = toc->adrcontrol & 0xf;

if (trackinfo->tracknr == tracknr) {
track_start = lba;
}
if (trackinfo->tracknr == tracknr+1) {
track_size = lba - track_start;
track_size -= 16; /* link block ? */
}
if (tracknr == 0xAA) {
lead_out = lba;
}

if ((control & (3<<2)) == 4) /* 01xxb */
flags |= MMC_TRACKINFO_DATA;
if ((control & (1<<2)) == 0) { /* x0xxb */
flags |= MMC_TRACKINFO_AUDIO;
if (control & (1<<3)) /* 10xxb */
flags |= MMC_TRACKINFO_AUDIO_4CHAN;
if (control & 1) /* xxx1b */
flags |= MMC_TRACKINFO_PRE_EMPH;
}

toc++;
size -= sizeof(struct scsipi_toc_formatted);
}
if (trackinfo->tracknr == last_tracknr) {
track_size = lead_out - track_start;
}

/* fill in */
/* trackinfo->tracknr preserved */
trackinfo->sessionnr = trackinfo->tracknr;
trackinfo->track_mode = 0; /* unknown */
trackinfo->data_mode = 8; /* 2048 bytes mode1 */

trackinfo->flags = flags;
trackinfo->track_start = track_start;
trackinfo->next_writable = 0;
trackinfo->free_blocks = 0;
trackinfo->packet_size = 16; /* standard length 16 blocks ECC */
trackinfo->track_size = track_size;
trackinfo->last_recorded = 0;

out:
free(buffer, M_TEMP);
return error;
}

static int
mmc_gettrackinfo(struct scsipi_periph *periph,
struct mmc_trackinfo *trackinfo)
{
struct scsipi_read_trackinfo ti_cmd;
struct scsipi_read_trackinfo_data ti __aligned(2);
struct scsipi_get_configuration gc_cmd;
struct scsipi_get_conf_data gc __aligned(2);
int error, flags;
int mmc_profile;

/* set up SCSI call with track number from trackinfo.tracknr */
flags = XS_CTL_DATA_IN | XS_CTL_SILENT;
memset(&ti_cmd, 0, sizeof(ti_cmd));
ti_cmd.opcode = READ_TRACKINFO;
ti_cmd.addr_type = READ_TRACKINFO_ADDR_TRACK;
ti_cmd.data_len[1] = READ_TRACKINFO_RETURNSIZE;

/* trackinfo.tracknr contains number of tracks to query */
_lto4b(trackinfo->tracknr, ti_cmd.address);
error = scsipi_command(periph,
(void *)&ti_cmd, sizeof(ti_cmd),
(void *)&ti, READ_TRACKINFO_RETURNSIZE,
CDRETRIES, 30000, NULL, flags);

if (error) {
/* trackinfo call failed, emulate for cd-rom/dvd-rom */
/* first determine mmc profile */
flags = XS_CTL_DATA_IN;
memset(&gc_cmd, 0, sizeof(gc_cmd));
gc_cmd.opcode = GET_CONFIGURATION;
_lto2b(GET_CONF_NO_FEATURES_LEN, gc_cmd.data_len);

error = scsipi_command(periph,
(void *)&gc_cmd, sizeof(gc_cmd),
(void *)&gc, GET_CONF_NO_FEATURES_LEN,
CDRETRIES, 30000, NULL, flags);
if (error)
return error;
mmc_profile = _2btol(gc.mmc_profile);

/* choose emulation */
if (mmc_profile == 0x08) /* CD-ROM */
return mmc_gettrackinfo_cdrom(periph, trackinfo);
if (mmc_profile == 0x10) /* DVD-ROM */
return mmc_gettrackinfo_dvdrom(periph, trackinfo);
/* CD/DVD drive is violating specs */
return EIO;
}

/* (re)initialise structure */
memset(trackinfo, 0, sizeof(struct mmc_trackinfo));

/* account for short returns screwing up track and session msb */
if ((ti.data_len[1] | (ti.data_len[0] << 8)) <= 32) {
ti.track_msb = 0;
ti.session_msb = 0;
}

trackinfo->tracknr = ti.track_lsb | (ti.track_msb << 8);
trackinfo->sessionnr = ti.session_lsb | (ti.session_msb << 8);
trackinfo->track_mode = ti.track_info_1 & 0xf;
trackinfo->data_mode = ti.track_info_2 & 0xf;

flags = 0;
if (ti.track_info_1 & 0x10)
flags |= MMC_TRACKINFO_COPY;
if (ti.track_info_1 & 0x20)
flags |= MMC_TRACKINFO_DAMAGED;
if (ti.track_info_2 & 0x10)
flags |= MMC_TRACKINFO_FIXED_PACKET;
if (ti.track_info_2 & 0x20)
flags |= MMC_TRACKINFO_INCREMENTAL;
if (ti.track_info_2 & 0x40)
flags |= MMC_TRACKINFO_BLANK;
if (ti.track_info_2 & 0x80)
flags |= MMC_TRACKINFO_RESERVED;
if (ti.data_valid & 0x01)
flags |= MMC_TRACKINFO_NWA_VALID;
if (ti.data_valid & 0x02)
flags |= MMC_TRACKINFO_LRA_VALID;
if ((trackinfo->track_mode & (3<<2)) == 4) /* 01xxb */
flags |= MMC_TRACKINFO_DATA;
if ((trackinfo->track_mode & (1<<2)) == 0) { /* x0xxb */
flags |= MMC_TRACKINFO_AUDIO;
if (trackinfo->track_mode & (1<<3)) /* 10xxb */
flags |= MMC_TRACKINFO_AUDIO_4CHAN;
if (trackinfo->track_mode & 1) /* xxx1b */
flags |= MMC_TRACKINFO_PRE_EMPH;
}

trackinfo->flags = flags;
trackinfo->track_start = _4btol(ti.track_start);
trackinfo->next_writable = _4btol(ti.next_writable);
trackinfo->free_blocks = _4btol(ti.free_blocks);
trackinfo->packet_size = _4btol(ti.packet_size);
trackinfo->track_size = _4btol(ti.track_size);
trackinfo->last_recorded = _4btol(ti.last_recorded);

return 0;
}

static int
mmc_doclose(struct scsipi_periph *periph, int param, int func) {
struct scsipi_close_tracksession close_cmd;
int error, flags;

/* set up SCSI call with track number */
flags = XS_CTL_DATA_OUT;
memset(&close_cmd, 0, sizeof(close_cmd));
close_cmd.opcode = CLOSE_TRACKSESSION;
close_cmd.function = func;
_lto2b(param, close_cmd.tracksessionnr);

error = scsipi_command(periph,
(void *) &close_cmd, sizeof(close_cmd),
NULL, 0,
CDRETRIES, 120000, NULL, flags);

return error;
}

static int
mmc_do_closetrack(struct scsipi_periph *periph, struct mmc_op *mmc_op)
{
int mmc_profile = mmc_op->mmc_profile;

switch (mmc_profile) {
case 0x12 : /* DVD-RAM */
case 0x1a : /* DVD+RW */
case 0x2a : /* DVD+RW Dual layer */
case 0x42 : /* BD-R Random Recording (RRM) */
case 0x43 : /* BD-RE */
case 0x52 : /* HD DVD-RW ; DVD-RAM like */
return EINVAL;
}

return mmc_doclose(periph, mmc_op->tracknr, 1);
}

static int
mmc_do_close_or_finalise(struct scsipi_periph *periph, struct mmc_op *mmc_op)
{
uint8_t blob[MS5LEN], *page5;
int mmc_profile = mmc_op->mmc_profile;
int func, close, flags;
int error;

close = (mmc_op->operation == MMC_OP_CLOSESESSION);

switch (mmc_profile) {
case 0x09 : /* CD-R */
case 0x0a : /* CD-RW */
/* Special case : need to update MS field in mode page 5 */
memset(blob, 0, sizeof(blob));
page5 = blob+8;

flags = XS_CTL_DATA_IN;
error = scsipi_mode_sense_big(periph, SMS_PF, 5,
(void *)blob, sizeof(blob), flags, CDRETRIES, 20000);
if (error)
return error;

/* set multi session field when closing a session only */
page5[3] &= 63;
if (close)
page5[3] |= 3 << 6;

flags = XS_CTL_DATA_OUT;
error = scsipi_mode_select_big(periph, SMS_PF,
(void *)blob, sizeof(blob), flags, CDRETRIES, 20000);
if (error)
return error;
/* and use function 2 */
func = 2;
break;
case 0x11 : /* DVD-R (DL) */
case 0x13 : /* DVD-RW restricted overwrite */
case 0x14 : /* DVD-RW sequential */
func = close ? 2 : 3;
break;
case 0x1b : /* DVD+R */
case 0x2b : /* DVD+R Dual layer */
case 0x51 : /* HD DVD-R */
case 0x41 : /* BD-R Sequential recording (SRM) */
func = close ? 2 : 6;
break;
case 0x12 : /* DVD-RAM */
case 0x1a : /* DVD+RW */
case 0x2a : /* DVD+RW Dual layer */
case 0x42 : /* BD-R Random Recording (RRM) */
case 0x43 : /* BD-RE */
case 0x52 : /* HD DVD-RW; DVD-RAM like */
return EINVAL;
default:
printf("MMC close/finalise passed wrong device type! (%d)\n",
mmc_profile);
return EINVAL;
}

return mmc_doclose(periph, mmc_op->sessionnr, func);
}

static int
mmc_do_reserve_track(struct scsipi_periph *periph, struct mmc_op *mmc_op)
{
struct scsipi_reserve_track reserve_cmd;
uint32_t extent;
int error, flags;

/* TODO make mmc safeguards? */
extent = mmc_op->extent;
/* TODO min/max support? */

/* set up SCSI call with requested space */
flags = XS_CTL_DATA_OUT;
memset(&reserve_cmd, 0, sizeof(reserve_cmd));
reserve_cmd.opcode = RESERVE_TRACK;
_lto4b(extent, reserve_cmd.reservation_size);

error = scsipi_command(periph,
(void *) &reserve_cmd, sizeof(reserve_cmd),
NULL, 0,
CDRETRIES, 30000, NULL, flags);

return error;
}

static int
mmc_do_reserve_track_nwa(struct scsipi_periph *periph, struct mmc_op *mmc_op)
{
/* XXX assumes that NWA given is valid */
switch (mmc_op->mmc_profile) {
case 0x09 : /* CD-R */
/* XXX unknown boundary checks XXX */
if (mmc_op->extent <= 152)
return EINVAL;
/* CD-R takes 152 sectors to close track */
mmc_op->extent -= 152;
return mmc_do_reserve_track(periph, mmc_op);
case 0x11 : /* DVD-R (DL) */
case 0x1b : /* DVD+R */
case 0x2b : /* DVD+R Dual layer */
if (mmc_op->extent % 16)
return EINVAL;
/* upto one ECC block of 16 sectors lost */
mmc_op->extent -= 16;
return mmc_do_reserve_track(periph, mmc_op);
case 0x41 : /* BD-R Sequential recording (SRM) */
case 0x51 : /* HD DVD-R */
if (mmc_op->extent % 32)
return EINVAL;
/* one ECC block of 32 sectors lost (AFAIK) */
mmc_op->extent -= 32;
return mmc_do_reserve_track(periph, mmc_op);
}

/* unknown behaviour or invalid disc type */
return EINVAL;
}

static int
mmc_do_repair_track(struct scsipi_periph *periph, struct mmc_op *mmc_op)
{
struct scsipi_repair_track repair_cmd;
int error, flags;

/* TODO make mmc safeguards? */

/* set up SCSI call with track number */
flags = XS_CTL_DATA_OUT;
memset(&repair_cmd, 0, sizeof(repair_cmd));
repair_cmd.opcode = REPAIR_TRACK;
_lto2b(mmc_op->tracknr, repair_cmd.tracknr);

error = scsipi_command(periph,
(void *) &repair_cmd, sizeof(repair_cmd),
NULL, 0,
CDRETRIES, 30000, NULL, flags);

return error;
}

static int
mmc_do_op(struct scsipi_periph *periph, struct mmc_op *mmc_op)
{
/* guard operation value */
if (mmc_op->operation < 1 || mmc_op->operation > MMC_OP_MAX)
return EINVAL;

/* synchronise cache is special since it doesn't rely on mmc_profile */
if (mmc_op->operation == MMC_OP_SYNCHRONISECACHE)
return cdcachesync(periph, 0);

/* zero mmc_profile means unknown disc so operations are not defined */
if (mmc_op->mmc_profile == 0) {
#ifdef DEBUG
printf("mmc_do_op called with mmc_profile = 0\n");
#endif
return EINVAL;
}

/* do the operations */
switch (mmc_op->operation) {
case MMC_OP_CLOSETRACK :
return mmc_do_closetrack(periph, mmc_op);
case MMC_OP_CLOSESESSION :
case MMC_OP_FINALISEDISC :
return mmc_do_close_or_finalise(periph, mmc_op);
case MMC_OP_RESERVETRACK :
return mmc_do_reserve_track(periph, mmc_op);
case MMC_OP_RESERVETRACK_NWA :
return mmc_do_reserve_track_nwa(periph, mmc_op);
case MMC_OP_REPAIRTRACK :
return mmc_do_repair_track(periph, mmc_op);
case MMC_OP_UNCLOSELASTSESSION :
/* TODO unclose last session support */
return EINVAL;
default :
printf("mmc_do_op: unhandled operation %d\n", mmc_op->operation);
}

return EINVAL;
}

static int
mmc_setup_writeparams(struct scsipi_periph *periph,
struct mmc_writeparams *mmc_writeparams)
{
struct mmc_trackinfo trackinfo;
uint8_t blob[MS5LEN];
uint8_t *page5;
int flags, error;
int track_mode, data_mode;

/* setup mode page 5 for CD only */
if (mmc_writeparams->mmc_class != MMC_CLASS_CD)
return 0;

memset(blob, 0, sizeof(blob));
page5 = blob+8;

/* read mode page 5 (with header) */
flags = XS_CTL_DATA_IN;
error = scsipi_mode_sense_big(periph, SMS_PF, 5, (void *)blob,
sizeof(blob), flags, CDRETRIES, 20000);
if (error)
return error;

/* set page length for reassurance */
page5[1] = P5LEN; /* page length */

/* write type packet/incremental */
page5[2] &= 0xf0;

/* set specified mode parameters */
track_mode = mmc_writeparams->track_mode;
data_mode = mmc_writeparams->data_mode;
if (track_mode <= 0 || track_mode > 15)
return EINVAL;
if (data_mode < 1 || data_mode > 2)
return EINVAL;

/* if a tracknr is passed, setup according to the track */
if (mmc_writeparams->tracknr > 0) {
trackinfo.tracknr = mmc_writeparams->tracknr;
error = mmc_gettrackinfo(periph, &trackinfo);
if (error)
return error;
if ((trackinfo.flags & MMC_TRACKINFO_BLANK) == 0) {
track_mode = trackinfo.track_mode;
data_mode = trackinfo.data_mode;
}
mmc_writeparams->blockingnr = trackinfo.packet_size;
}

/* copy track mode and data mode from trackinfo */
page5[3] &= 16; /* keep only `Copy' bit */
page5[3] |= (3 << 6) | track_mode;
page5[4] &= 0xf0; /* wipe data block type */
if (data_mode == 1) {
/* select ISO mode 1 (CD only) */
page5[4] |= 8;
/* select session format normal disc (CD only) */
page5[8] = 0;
} else {
/* select ISO mode 2; XA form 1 (CD only) */
page5[4] |= 10;
/* select session format CD-ROM XA disc (CD only) */
page5[8] = 0x20;
}
if (mmc_writeparams->mmc_cur & MMC_CAP_SEQUENTIAL) {
if (mmc_writeparams->mmc_cur & MMC_CAP_ZEROLINKBLK) {
/* set BUFE buffer underrun protection */
page5[2] |= 1<<6;
}
/* allow for multi session */
page5[3] |= 3 << 6;
} else {
/* select fixed packets */
page5[3] |= 1<<5;
_lto4b(mmc_writeparams->blockingnr, &(page5[10]));
}

/* write out updated mode page 5 (with header) */
flags = XS_CTL_DATA_OUT;
error = scsipi_mode_select_big(periph, SMS_PF, (void *)blob,
sizeof(blob), flags, CDRETRIES, 20000);
if (error)
return error;

return 0;
}

static void
cd_set_geometry(struct cd_softc *cd)
{
struct dk_softc *dksc = &cd->sc_dksc;
struct disk_geom *dg = &dksc->sc_dkdev.dk_geom;

memset(dg, 0, sizeof(*dg));

dg->dg_secperunit = cd->params.disksize;
dg->dg_secsize = cd->params.blksize;
dg->dg_nsectors = 100;
dg->dg_ntracks = 1;

disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, NULL);
}