NetBSD/sys/scsi/cd.c

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/* $NetBSD: cd.c,v 1.100 1997/04/02 02:29:30 mycroft Exp $ */
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/*
* Copyright (c) 1994, 1995, 1997 Charles M. Hannum. All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
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* This product includes software developed by Charles M. Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 (julian@tfs.com)
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* 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 (julian@tfs.com) Sept 1992
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*/
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#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
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#include <sys/file.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/buf.h>
#include <sys/uio.h>
#include <sys/malloc.h>
#include <sys/errno.h>
#include <sys/device.h>
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#include <sys/disklabel.h>
#include <sys/disk.h>
#include <sys/cdio.h>
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#include <sys/proc.h>
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#include <sys/conf.h>
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#include <scsi/scsi_all.h>
#include <scsi/scsi_cd.h>
#include <scsi/scsi_disk.h> /* rw_big and start_stop come from there */
#include <scsi/scsiconf.h>
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#define CDOUTSTANDING 4
#define CDRETRIES 1
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#define CDUNIT(z) DISKUNIT(z)
#define CDPART(z) DISKPART(z)
#define MAKECDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part)
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struct cd_softc {
struct device sc_dev;
struct disk sc_dk;
int flags;
#define CDF_LOCKED 0x01
#define CDF_WANTED 0x02
#define CDF_WLABEL 0x04 /* label is writable */
#define CDF_LABELLING 0x08 /* writing label */
#define CDF_ANCIENT 0x10 /* disk is ancient; for minphys */
struct scsi_link *sc_link; /* contains our targ, lun, etc. */
struct cd_parms {
int blksize;
u_long disksize; /* total number sectors */
} params;
struct buf buf_queue;
};
#ifdef __BROKEN_INDIRECT_CONFIG
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int cdmatch __P((struct device *, void *, void *));
#else
int cdmatch __P((struct device *, struct cfdata *, void *));
#endif
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void cdattach __P((struct device *, struct device *, void *));
int cdlock __P((struct cd_softc *));
void cdunlock __P((struct cd_softc *));
void cdstart __P((void *));
void cdminphys __P((struct buf *));
void cdgetdisklabel __P((struct cd_softc *));
void cddone __P((struct scsi_xfer *));
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u_long cd_size __P((struct cd_softc *, int));
int cd_get_mode __P((struct cd_softc *, struct cd_mode_data *, int));
int cd_set_mode __P((struct cd_softc *, struct cd_mode_data *));
int cd_play __P((struct cd_softc *, int, int ));
int cd_play_big __P((struct cd_softc *, int, int ));
int cd_play_tracks __P((struct cd_softc *, int, int, int, int ));
int cd_play_msf __P((struct cd_softc *, int, int, int, int, int, int ));
int cd_pause __P((struct cd_softc *, int));
int cd_reset __P((struct cd_softc *));
int cd_read_subchannel __P((struct cd_softc *, int, int, int,
struct cd_sub_channel_info *, int ));
int cd_read_toc __P((struct cd_softc *, int, int, struct cd_toc_entry *,
int ));
int cd_get_parms __P((struct cd_softc *, int));
struct cfattach cd_ca = {
sizeof(struct cd_softc), cdmatch, cdattach
};
struct cfdriver cd_cd = {
NULL, "cd", DV_DISK
};
struct dkdriver cddkdriver = { cdstrategy };
struct scsi_device cd_switch = {
NULL, /* use default error handler */
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 */
};
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struct scsi_inquiry_pattern cd_patterns[] = {
{T_CDROM, T_REMOV,
"", "", ""},
#if 0
{T_CDROM, T_REMOV, /* more luns */
"PIONEER ", "CD-ROM DRM-600 ", ""},
#endif
};
int
cdmatch(parent, match, aux)
struct device *parent;
#ifdef __BROKEN_INDIRECT_CONFIG
void *match;
#else
struct cfdata *match;
#endif
void *aux;
{
struct scsibus_attach_args *sa = aux;
int priority;
(void)scsi_inqmatch(sa->sa_inqbuf,
(caddr_t)cd_patterns, sizeof(cd_patterns)/sizeof(cd_patterns[0]),
sizeof(cd_patterns[0]), &priority);
return (priority);
}
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/*
* The routine called by the low level scsi routine when it discovers
* A device suitable for this driver
*/
void
cdattach(parent, self, aux)
struct device *parent, *self;
void *aux;
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{
struct cd_softc *cd = (void *)self;
struct scsibus_attach_args *sa = aux;
struct scsi_link *sc_link = sa->sa_sc_link;
SC_DEBUG(sc_link, SDEV_DB2, ("cdattach: "));
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/*
* Store information needed to contact our base driver
*/
cd->sc_link = sc_link;
sc_link->device = &cd_switch;
sc_link->device_softc = cd;
if (sc_link->openings > CDOUTSTANDING)
sc_link->openings = CDOUTSTANDING;
/*
* Initialize and attach the disk structure.
*/
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cd->sc_dk.dk_driver = &cddkdriver;
cd->sc_dk.dk_name = cd->sc_dev.dv_xname;
disk_attach(&cd->sc_dk);
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#if !defined(i386)
dk_establish(&cd->sc_dk, &cd->sc_dev); /* XXX */
#endif
/*
* Note if this device is ancient. This is used in cdminphys().
*/
if ((sa->sa_inqbuf->version & SID_ANSII) == 0)
cd->flags |= CDF_ANCIENT;
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printf("\n");
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}
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/*
* Wait interruptibly for an exclusive lock.
*
* XXX
* Several drivers do this; it should be abstracted and made MP-safe.
*/
int
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cdlock(cd)
struct cd_softc *cd;
{
int error;
while ((cd->flags & CDF_LOCKED) != 0) {
cd->flags |= CDF_WANTED;
if ((error = tsleep(cd, PRIBIO | PCATCH, "cdlck", 0)) != 0)
return error;
}
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cd->flags |= CDF_LOCKED;
return 0;
}
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/*
* Unlock and wake up any waiters.
*/
void
cdunlock(cd)
struct cd_softc *cd;
{
cd->flags &= ~CDF_LOCKED;
if ((cd->flags & CDF_WANTED) != 0) {
cd->flags &= ~CDF_WANTED;
wakeup(cd);
}
}
/*
* open the device. Make sure the partition info is a up-to-date as can be.
*/
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int
cdopen(dev, flag, fmt, p)
dev_t dev;
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int flag, fmt;
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struct proc *p;
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{
struct cd_softc *cd;
struct scsi_link *sc_link;
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int unit, part;
int error;
unit = CDUNIT(dev);
if (unit >= cd_cd.cd_ndevs)
return ENXIO;
cd = cd_cd.cd_devs[unit];
if (!cd)
return ENXIO;
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sc_link = cd->sc_link;
SC_DEBUG(sc_link, SDEV_DB1,
("cdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit,
cd_cd.cd_ndevs, CDPART(dev)));
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if ((error = cdlock(cd)) != 0)
return error;
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if (cd->sc_dk.dk_openmask != 0) {
/*
* If any partition is open, but the disk has been invalidated,
* disallow further opens.
*/
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if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) {
error = EIO;
goto bad3;
}
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} else {
/* Check that it is still responding and ok. */
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error = scsi_test_unit_ready(sc_link,
SCSI_IGNORE_ILLEGAL_REQUEST |
SCSI_IGNORE_MEDIA_CHANGE |
SCSI_IGNORE_NOT_READY);
if (error)
goto bad3;
/* Start the pack spinning if necessary. */
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error = scsi_start(sc_link, SSS_START,
SCSI_IGNORE_ILLEGAL_REQUEST |
SCSI_IGNORE_MEDIA_CHANGE | SCSI_SILENT);
if (error)
goto bad3;
sc_link->flags |= SDEV_OPEN;
/* Lock the pack in. */
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error = scsi_prevent(sc_link, PR_PREVENT,
SCSI_IGNORE_ILLEGAL_REQUEST |
SCSI_IGNORE_MEDIA_CHANGE);
if (error)
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goto bad;
if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) {
sc_link->flags |= SDEV_MEDIA_LOADED;
/* Load the physical device parameters. */
if (cd_get_parms(cd, 0) != 0) {
error = ENXIO;
goto bad2;
}
SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded "));
/* Fabricate a disk label. */
cdgetdisklabel(cd);
SC_DEBUG(sc_link, SDEV_DB3, ("Disklabel fabricated "));
}
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}
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part = CDPART(dev);
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/* Check that the partition exists. */
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if (part != RAW_PART &&
(part >= cd->sc_dk.dk_label->d_npartitions ||
cd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) {
error = ENXIO;
goto bad;
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}
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/* Insure only one open at a time. */
switch (fmt) {
case S_IFCHR:
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cd->sc_dk.dk_copenmask |= (1 << part);
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break;
case S_IFBLK:
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cd->sc_dk.dk_bopenmask |= (1 << part);
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break;
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}
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cd->sc_dk.dk_openmask = cd->sc_dk.dk_copenmask | cd->sc_dk.dk_bopenmask;
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SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n"));
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cdunlock(cd);
return 0;
bad2:
sc_link->flags &= ~SDEV_MEDIA_LOADED;
bad:
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if (cd->sc_dk.dk_openmask == 0) {
scsi_prevent(sc_link, PR_ALLOW,
SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE);
sc_link->flags &= ~SDEV_OPEN;
}
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bad3:
cdunlock(cd);
return error;
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}
/*
* close the device.. only called if we are the LAST
* occurence of an open device
*/
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int
cdclose(dev, flag, fmt, p)
dev_t dev;
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int flag, fmt;
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struct proc *p;
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{
struct cd_softc *cd = cd_cd.cd_devs[CDUNIT(dev)];
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int part = CDPART(dev);
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int error;
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if ((error = cdlock(cd)) != 0)
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return error;
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switch (fmt) {
case S_IFCHR:
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cd->sc_dk.dk_copenmask &= ~(1 << part);
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break;
case S_IFBLK:
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cd->sc_dk.dk_bopenmask &= ~(1 << part);
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break;
}
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cd->sc_dk.dk_openmask = cd->sc_dk.dk_copenmask | cd->sc_dk.dk_bopenmask;
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if (cd->sc_dk.dk_openmask == 0) {
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/* XXXX Must wait for I/O to complete! */
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scsi_prevent(cd->sc_link, PR_ALLOW,
SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_NOT_READY);
cd->sc_link->flags &= ~SDEV_OPEN;
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}
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cdunlock(cd);
return 0;
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}
/*
* 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.
*/
void
cdstrategy(bp)
struct buf *bp;
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{
struct cd_softc *cd = cd_cd.cd_devs[CDUNIT(bp->b_dev)];
int opri;
SC_DEBUG(cd->sc_link, SDEV_DB2, ("cdstrategy "));
SC_DEBUG(cd->sc_link, SDEV_DB1,
("%ld bytes @ blk %d\n", bp->b_bcount, bp->b_blkno));
/*
* The transfer must be a whole number of blocks.
*/
if ((bp->b_bcount % cd->sc_dk.dk_label->d_secsize) != 0) {
bp->b_error = EINVAL;
goto bad;
}
/*
* If the device has been made invalid, error out
* maybe the media changed
*/
if ((cd->sc_link->flags & SDEV_MEDIA_LOADED) == 0) {
bp->b_error = EIO;
goto bad;
}
/*
* If it's a null transfer, return immediately
*/
if (bp->b_bcount == 0)
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goto done;
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/*
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* Do bounds checking, adjust transfer. if error, process.
* If end of partition, just return.
*/
if (CDPART(bp->b_dev) != RAW_PART &&
bounds_check_with_label(bp, cd->sc_dk.dk_label,
(cd->flags & (CDF_WLABEL|CDF_LABELLING)) != 0) <= 0)
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goto done;
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opri = splbio();
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/*
* Place it in the queue of disk activities for this disk
*/
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disksort(&cd->buf_queue, bp);
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/*
* Tell the device to get going on the transfer if it's
* not doing anything, otherwise just wait for completion
*/
cdstart(cd);
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splx(opri);
return;
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bad:
bp->b_flags |= B_ERROR;
done:
/*
* Correctly set the buf to indicate a completed xfer
*/
bp->b_resid = bp->b_bcount;
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biodone(bp);
}
/*
* cdstart looks to see if there is a buf waiting for the device
* and that the device is not already busy. If both are true,
* It deques the buf and creates a scsi command to perform the
* transfer in the buf. The transfer request will call scsi_done
* on completion, which will in turn call this routine again
* so that the next queued transfer is performed.
* The bufs are queued by the strategy routine (cdstrategy)
*
* This routine is also called after other non-queued requests
* have been made of the scsi driver, to ensure that the queue
* continues to be drained.
*
* must be called at the correct (highish) spl level
* cdstart() is called at splbio from cdstrategy and scsi_done
*/
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void
cdstart(v)
register void *v;
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{
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register struct cd_softc *cd = v;
register struct scsi_link *sc_link = cd->sc_link;
struct buf *bp = 0;
struct buf *dp;
struct scsi_rw_big cmd_big;
struct scsi_rw cmd_small;
struct scsi_generic *cmdp;
int blkno, nblks, cmdlen;
struct partition *p;
SC_DEBUG(sc_link, SDEV_DB2, ("cdstart "));
/*
* Check if the device has room for another command
*/
while (sc_link->openings > 0) {
/*
* 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 (sc_link->flags & SDEV_WAITING) {
sc_link->flags &= ~SDEV_WAITING;
wakeup((caddr_t)sc_link);
return;
}
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/*
* See if there is a buf with work for us to do..
*/
dp = &cd->buf_queue;
if ((bp = dp->b_actf) == NULL) /* yes, an assign */
return;
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dp->b_actf = bp->b_actf;
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/*
* If the deivce has become invalid, abort all the
* reads and writes until all files have been closed and
* re-opened
*/
if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) {
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
bp->b_resid = bp->b_bcount;
biodone(bp);
continue;
}
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/*
* We have a buf, now we should make a command
*
* First, translate the block to absolute and put it in terms
* of the logical blocksize of the device.
*/
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blkno =
bp->b_blkno / (cd->sc_dk.dk_label->d_secsize / DEV_BSIZE);
if (CDPART(bp->b_dev) != RAW_PART) {
p = &cd->sc_dk.dk_label->d_partitions[CDPART(bp->b_dev)];
blkno += p->p_offset;
}
nblks = howmany(bp->b_bcount, cd->sc_dk.dk_label->d_secsize);
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/*
* Fill out the scsi command. If the transfer will
* fit in a "small" cdb, use it.
*/
if (((blkno & 0x1fffff) == blkno) &&
((nblks & 0xff) == nblks)) {
/*
* We can fit in a small cdb.
*/
bzero(&cmd_small, sizeof(cmd_small));
cmd_small.opcode = (bp->b_flags & B_READ) ?
READ_COMMAND : WRITE_COMMAND;
_lto3b(blkno, cmd_small.addr);
cmd_small.length = nblks & 0xff;
cmdlen = sizeof(cmd_small);
cmdp = (struct scsi_generic *)&cmd_small;
} else {
/*
* Need a large cdb.
*/
bzero(&cmd_big, sizeof(cmd_big));
cmd_big.opcode = (bp->b_flags & B_READ) ?
READ_BIG : WRITE_BIG;
_lto4b(blkno, cmd_big.addr);
_lto2b(nblks, cmd_big.length);
cmdlen = sizeof(cmd_big);
cmdp = (struct scsi_generic *)&cmd_big;
}
/* Instrumentation. */
disk_busy(&cd->sc_dk);
/*
* Call the routine that chats with the adapter.
* Note: we cannot sleep as we may be an interrupt
*/
if (scsi_scsi_cmd(sc_link, cmdp, cmdlen,
(u_char *) bp->b_data, bp->b_bcount,
CDRETRIES, 30000, bp, SCSI_NOSLEEP |
((bp->b_flags & B_READ) ? SCSI_DATA_IN : SCSI_DATA_OUT))) {
disk_unbusy(&cd->sc_dk, 0);
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printf("%s: not queued", cd->sc_dev.dv_xname);
}
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}
}
void
cddone(xs)
struct scsi_xfer *xs;
{
struct cd_softc *cd = xs->sc_link->device_softc;
if (xs->bp != NULL)
disk_unbusy(&cd->sc_dk, xs->bp->b_bcount - xs->bp->b_resid);
}
void
cdminphys(bp)
struct buf *bp;
{
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struct cd_softc *cd = cd_cd.cd_devs[CDUNIT(bp->b_dev)];
long max;
/*
* 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 settng 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) {
max = cd->sc_dk.dk_label->d_secsize * 0xff;
if (bp->b_bcount > max)
bp->b_bcount = max;
}
(*cd->sc_link->adapter->scsi_minphys)(bp);
}
int
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cdread(dev, uio, ioflag)
dev_t dev;
struct uio *uio;
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int ioflag;
{
return (physio(cdstrategy, NULL, dev, B_READ, cdminphys, uio));
}
int
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cdwrite(dev, uio, ioflag)
dev_t dev;
struct uio *uio;
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int ioflag;
{
return (physio(cdstrategy, NULL, dev, B_WRITE, cdminphys, uio));
}
/*
* Perform special action on behalf of the user.
* Knows about the internals of this device
*/
int
cdioctl(dev, cmd, addr, flag, p)
dev_t dev;
u_long cmd;
caddr_t addr;
int flag;
struct proc *p;
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{
struct cd_softc *cd = cd_cd.cd_devs[CDUNIT(dev)];
int error;
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SC_DEBUG(cd->sc_link, SDEV_DB2, ("cdioctl 0x%lx ", cmd));
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/*
* If the device is not valid.. abandon ship
*/
if ((cd->sc_link->flags & SDEV_MEDIA_LOADED) == 0)
return EIO;
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switch (cmd) {
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case DIOCGDINFO:
*(struct disklabel *)addr = *(cd->sc_dk.dk_label);
return 0;
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case DIOCGPART:
((struct partinfo *)addr)->disklab = cd->sc_dk.dk_label;
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((struct partinfo *)addr)->part =
&cd->sc_dk.dk_label->d_partitions[CDPART(dev)];
return 0;
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case DIOCWDINFO:
case DIOCSDINFO:
if ((flag & FWRITE) == 0)
return EBADF;
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if ((error = cdlock(cd)) != 0)
return error;
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cd->flags |= CDF_LABELLING;
error = setdisklabel(cd->sc_dk.dk_label,
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(struct disklabel *)addr, /*cd->sc_dk.dk_openmask : */0,
cd->sc_dk.dk_cpulabel);
if (error == 0) {
}
cd->flags &= ~CDF_LABELLING;
cdunlock(cd);
return error;
case DIOCWLABEL:
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return EBADF;
case CDIOCPLAYTRACKS: {
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struct ioc_play_track *args = (struct ioc_play_track *)addr;
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
data.page.audio.flags &= ~CD_PA_SOTC;
data.page.audio.flags |= CD_PA_IMMED;
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if ((error = cd_set_mode(cd, &data)) != 0)
return error;
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return cd_play_tracks(cd, args->start_track,
args->start_index, args->end_track,
args->end_index);
}
case CDIOCPLAYMSF: {
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struct ioc_play_msf *args = (struct ioc_play_msf *)addr;
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
data.page.audio.flags &= ~CD_PA_SOTC;
data.page.audio.flags |= CD_PA_IMMED;
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if ((error = cd_set_mode(cd, &data)) != 0)
return error;
return cd_play_msf(cd, args->start_m, args->start_s,
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args->start_f, args->end_m, args->end_s,
args->end_f);
}
case CDIOCPLAYBLOCKS: {
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struct ioc_play_blocks *args = (struct ioc_play_blocks *)addr;
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
data.page.audio.flags &= ~CD_PA_SOTC;
data.page.audio.flags |= CD_PA_IMMED;
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if ((error = cd_set_mode(cd, &data)) != 0)
return error;
return cd_play(cd, args->blk, args->len);
}
case CDIOCREADSUBCHANNEL: {
struct ioc_read_subchannel *args
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= (struct ioc_read_subchannel *)addr;
struct cd_sub_channel_info data;
int len = args->data_len;
if (len > sizeof(data) ||
len < sizeof(struct cd_sub_channel_header))
return EINVAL;
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error = cd_read_subchannel(cd, args->address_format,
args->data_format, args->track,
&data, len);
if (error)
return error;
len = min(len, _2btol(data.header.data_len) +
sizeof(struct cd_sub_channel_header));
return copyout(&data, args->data, len);
}
case CDIOREADTOCHEADER: {
struct ioc_toc_header th;
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if ((error = cd_read_toc(cd, 0, 0,
(struct cd_toc_entry *) &th,
sizeof(th))) != 0)
return error;
th.len = ntohs(th.len);
bcopy(&th, addr, sizeof(th));
return 0;
}
case CDIOREADTOCENTRYS: {
struct cd_toc {
struct ioc_toc_header header;
struct cd_toc_entry entries[65];
} data;
struct ioc_read_toc_entry *te =
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(struct ioc_read_toc_entry *)addr;
struct ioc_toc_header *th;
int len = te->data_len;
th = &data.header;
if (len > sizeof(data.entries) ||
len < sizeof(struct cd_toc_entry))
return EINVAL;
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error = cd_read_toc(cd, te->address_format,
te->starting_track,
(struct cd_toc_entry *)&data,
len + sizeof(struct ioc_toc_header));
if (error)
return error;
len = min(len, ntohs(th->len) - (sizeof(th->starting_track) +
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sizeof(th->ending_track)));
return copyout(data.entries, te->data, len);
}
case CDIOCSETPATCH: {
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struct ioc_patch *arg = (struct ioc_patch *)addr;
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
data.page.audio.port[LEFT_PORT].channels = arg->patch[0];
data.page.audio.port[RIGHT_PORT].channels = arg->patch[1];
data.page.audio.port[2].channels = arg->patch[2];
data.page.audio.port[3].channels = arg->patch[3];
return cd_set_mode(cd, &data);
}
case CDIOCGETVOL: {
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struct ioc_vol *arg = (struct ioc_vol *)addr;
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
arg->vol[LEFT_PORT] = data.page.audio.port[LEFT_PORT].volume;
arg->vol[RIGHT_PORT] = data.page.audio.port[RIGHT_PORT].volume;
arg->vol[2] = data.page.audio.port[2].volume;
arg->vol[3] = data.page.audio.port[3].volume;
return 0;
}
case CDIOCSETVOL: {
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struct ioc_vol *arg = (struct ioc_vol *)addr;
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
data.page.audio.port[LEFT_PORT].channels = CHANNEL_0;
data.page.audio.port[LEFT_PORT].volume = arg->vol[LEFT_PORT];
data.page.audio.port[RIGHT_PORT].channels = CHANNEL_1;
data.page.audio.port[RIGHT_PORT].volume = arg->vol[RIGHT_PORT];
data.page.audio.port[2].volume = arg->vol[2];
data.page.audio.port[3].volume = arg->vol[3];
return cd_set_mode(cd, &data);
}
case CDIOCSETMONO: {
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
data.page.audio.port[LEFT_PORT].channels =
LEFT_CHANNEL | RIGHT_CHANNEL | 4 | 8;
data.page.audio.port[RIGHT_PORT].channels =
LEFT_CHANNEL | RIGHT_CHANNEL;
data.page.audio.port[2].channels = 0;
data.page.audio.port[3].channels = 0;
return cd_set_mode(cd, &data);
}
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case CDIOCSETSTEREO: {
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
data.page.audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
data.page.audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
data.page.audio.port[2].channels = 0;
data.page.audio.port[3].channels = 0;
return cd_set_mode(cd, &data);
}
case CDIOCSETMUTE: {
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
data.page.audio.port[LEFT_PORT].channels = 0;
data.page.audio.port[RIGHT_PORT].channels = 0;
data.page.audio.port[2].channels = 0;
data.page.audio.port[3].channels = 0;
return cd_set_mode(cd, &data);
}
case CDIOCSETLEFT: {
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
data.page.audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
data.page.audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
data.page.audio.port[2].channels = 0;
data.page.audio.port[3].channels = 0;
return cd_set_mode(cd, &data);
}
case CDIOCSETRIGHT: {
struct cd_mode_data data;
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if ((error = cd_get_mode(cd, &data, AUDIO_PAGE)) != 0)
return error;
data.page.audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
data.page.audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
data.page.audio.port[2].channels = 0;
data.page.audio.port[3].channels = 0;
return cd_set_mode(cd, &data);
}
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case CDIOCRESUME:
return cd_pause(cd, 1);
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case CDIOCPAUSE:
return cd_pause(cd, 0);
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case CDIOCSTART:
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return scsi_start(cd->sc_link, SSS_START, 0);
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case CDIOCSTOP:
return scsi_start(cd->sc_link, SSS_STOP, 0);
case CDIOCEJECT: /* FALLTHROUGH */
case DIOCEJECT:
return scsi_start(cd->sc_link, SSS_STOP|SSS_LOEJ, 0);
case CDIOCALLOW:
return scsi_prevent(cd->sc_link, PR_ALLOW, 0);
case CDIOCPREVENT:
return scsi_prevent(cd->sc_link, PR_PREVENT, 0);
case DIOCLOCK:
return scsi_prevent(cd->sc_link,
(*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0);
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case CDIOCSETDEBUG:
cd->sc_link->flags |= (SDEV_DB1 | SDEV_DB2);
return 0;
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case CDIOCCLRDEBUG:
cd->sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2);
return 0;
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case CDIOCRESET:
return cd_reset(cd);
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default:
if (CDPART(dev) != RAW_PART)
return ENOTTY;
return scsi_do_ioctl(cd->sc_link, dev, cmd, addr, flag, p);
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}
#ifdef DIAGNOSTIC
panic("cdioctl: impossible");
#endif
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}
/*
* Load the label information on the named device
* Actually fabricate a disklabel
*
* EVENTUALLY take information about different
* data tracks from the TOC and put it in the disklabel
*/
void
cdgetdisklabel(cd)
struct cd_softc *cd;
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{
struct disklabel *lp = cd->sc_dk.dk_label;
bzero(lp, sizeof(struct disklabel));
bzero(cd->sc_dk.dk_cpulabel, sizeof(struct cpu_disklabel));
lp->d_secsize = cd->params.blksize;
lp->d_ntracks = 1;
lp->d_nsectors = 100;
lp->d_ncylinders = (cd->params.disksize / 100) + 1;
lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors;
strncpy(lp->d_typename, "SCSI CD-ROM", 16);
lp->d_type = DTYPE_SCSI;
strncpy(lp->d_packname, "fictitious", 16);
lp->d_secperunit = cd->params.disksize;
lp->d_rpm = 300;
lp->d_interleave = 1;
lp->d_flags = D_REMOVABLE;
lp->d_partitions[0].p_offset = 0;
lp->d_partitions[0].p_size =
lp->d_secperunit * (lp->d_secsize / DEV_BSIZE);
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_secsize / DEV_BSIZE);
lp->d_partitions[RAW_PART].p_fstype = FS_ISO9660;
lp->d_npartitions = RAW_PART + 1;
lp->d_magic = DISKMAGIC;
lp->d_magic2 = DISKMAGIC;
lp->d_checksum = dkcksum(lp);
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}
/*
* Find out from the device what it's capacity is
*/
u_long
cd_size(cd, flags)
struct cd_softc *cd;
int flags;
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{
struct scsi_read_cd_cap_data rdcap;
struct scsi_read_cd_capacity scsi_cmd;
int blksize;
u_long size;
/*
* make up a scsi command and ask the scsi driver to do
* it for you.
*/
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.opcode = READ_CD_CAPACITY;
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/*
* If the command works, interpret the result as a 4 byte
* number of blocks and a blocksize
*/
if (scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *)&scsi_cmd,
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sizeof(scsi_cmd), (u_char *)&rdcap, sizeof(rdcap), CDRETRIES,
20000, NULL, flags | SCSI_DATA_IN) != 0)
return 0;
blksize = _4btol(rdcap.length);
if (blksize < 512)
blksize = 2048; /* some drives lie ! */
cd->params.blksize = blksize;
size = _4btol(rdcap.addr) + 1;
if (size < 100)
size = 400000; /* ditto */
cd->params.disksize = size;
return size;
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}
/*
* Get the requested page into the buffer given
*/
int
cd_get_mode(cd, data, page)
struct cd_softc *cd;
struct cd_mode_data *data;
int page;
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{
struct scsi_mode_sense scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
bzero(data, sizeof(*data));
scsi_cmd.opcode = MODE_SENSE;
scsi_cmd.page = page;
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scsi_cmd.length = sizeof(*data) & 0xff;
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return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *)&scsi_cmd,
sizeof(scsi_cmd), (u_char *)data, sizeof(*data), CDRETRIES, 20000,
NULL, SCSI_DATA_IN);
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}
/*
* Get the requested page into the buffer given
*/
int
cd_set_mode(cd, data)
struct cd_softc *cd;
struct cd_mode_data *data;
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{
struct scsi_mode_select scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.opcode = MODE_SELECT;
scsi_cmd.byte2 |= SMS_PF;
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scsi_cmd.length = sizeof(*data) & 0xff;
data->header.data_length = 0;
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return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *)&scsi_cmd,
sizeof(scsi_cmd), (u_char *)data, sizeof(*data), CDRETRIES, 20000,
NULL, SCSI_DATA_OUT);
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}
/*
* Get scsi driver to send a "start playing" command
*/
int
cd_play(cd, blkno, nblks)
struct cd_softc *cd;
int blkno, nblks;
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{
struct scsi_play scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.opcode = PLAY;
_lto4b(blkno, scsi_cmd.blk_addr);
_lto2b(nblks, scsi_cmd.xfer_len);
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return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *)&scsi_cmd,
sizeof(scsi_cmd), 0, 0, CDRETRIES, 200000, NULL, 0);
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}
/*
* Get scsi driver to send a "start playing" command
*/
int
cd_play_big(cd, blkno, nblks)
struct cd_softc *cd;
int blkno, nblks;
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{
struct scsi_play_big scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.opcode = PLAY_BIG;
_lto4b(blkno, scsi_cmd.blk_addr);
_lto4b(nblks, scsi_cmd.xfer_len);
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return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *)&scsi_cmd,
sizeof(scsi_cmd), 0, 0, CDRETRIES, 20000, NULL, 0);
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}
/*
* Get scsi driver to send a "start playing" command
*/
int
cd_play_tracks(cd, strack, sindex, etrack, eindex)
struct cd_softc *cd;
int strack, sindex, etrack, eindex;
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{
struct scsi_play_track scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.opcode = PLAY_TRACK;
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scsi_cmd.start_track = strack;
scsi_cmd.start_index = sindex;
scsi_cmd.end_track = etrack;
scsi_cmd.end_index = eindex;
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return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *)&scsi_cmd,
sizeof(scsi_cmd), 0, 0, CDRETRIES, 20000, NULL, 0);
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}
/*
* Get scsi driver to send a "play msf" command
*/
int
cd_play_msf(cd, startm, starts, startf, endm, ends, endf)
struct cd_softc *cd;
int startm, starts, startf, endm, ends, endf;
{
struct scsi_play_msf scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.opcode = PLAY_MSF;
scsi_cmd.start_m = startm;
scsi_cmd.start_s = starts;
scsi_cmd.start_f = startf;
scsi_cmd.end_m = endm;
scsi_cmd.end_s = ends;
scsi_cmd.end_f = endf;
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return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *)&scsi_cmd,
sizeof(scsi_cmd), 0, 0, CDRETRIES, 2000, NULL, 0);
}
/*
* Get scsi driver to send a "start up" command
*/
int
cd_pause(cd, go)
struct cd_softc *cd;
int go;
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{
struct scsi_pause scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.opcode = PAUSE;
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scsi_cmd.resume = go;
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return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *)&scsi_cmd,
sizeof(scsi_cmd), 0, 0, CDRETRIES, 2000, NULL, 0);
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}
/*
* Get scsi driver to send a "RESET" command
*/
int
cd_reset(cd)
struct cd_softc *cd;
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{
return scsi_scsi_cmd(cd->sc_link, 0, 0, 0, 0, CDRETRIES, 2000, NULL,
SCSI_RESET);
}
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/*
* Read subchannel
*/
int
cd_read_subchannel(cd, mode, format, track, data, len)
struct cd_softc *cd;
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int mode, format, track, len;
struct cd_sub_channel_info *data;
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{
struct scsi_read_subchannel scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.opcode = READ_SUBCHANNEL;
if (mode == CD_MSF_FORMAT)
scsi_cmd.byte2 |= CD_MSF;
scsi_cmd.byte3 = SRS_SUBQ;
scsi_cmd.subchan_format = format;
scsi_cmd.track = track;
_lto2b(len, scsi_cmd.data_len);
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return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *)&scsi_cmd,
sizeof(struct scsi_read_subchannel), (u_char *)data, len,
CDRETRIES, 5000, NULL, SCSI_DATA_IN|SCSI_SILENT);
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}
/*
* Read table of contents
*/
int
cd_read_toc(cd, mode, start, data, len)
struct cd_softc *cd;
int mode, start, len;
struct cd_toc_entry *data;
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{
struct scsi_read_toc scsi_cmd;
int ntoc;
bzero(&scsi_cmd, sizeof(scsi_cmd));
/*if (len!=sizeof(struct ioc_toc_header))
* ntoc=((len)-sizeof(struct ioc_toc_header))/sizeof(struct cd_toc_entry);
* else */
ntoc = len;
scsi_cmd.opcode = READ_TOC;
if (mode == CD_MSF_FORMAT)
scsi_cmd.byte2 |= CD_MSF;
scsi_cmd.from_track = start;
_lto2b(ntoc, scsi_cmd.data_len);
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return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *)&scsi_cmd,
sizeof(struct scsi_read_toc), (u_char *)data, len, CDRETRIES,
5000, NULL, SCSI_DATA_IN);
}
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/*
* Get the scsi driver to send a full inquiry to the device and use the
* results to fill out the disk parameter structure.
*/
int
cd_get_parms(cd, flags)
struct cd_softc *cd;
int flags;
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{
/*
* give a number of sectors so that sec * trks * cyls
* is <= disk_size
*/
if (cd_size(cd, flags) == 0)
return ENXIO;
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return 0;
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}
int
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cdsize(dev)
dev_t dev;
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{
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/* CD-ROMs are read-only. */
return -1;
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}
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int
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cddump(dev, blkno, va, size)
dev_t dev;
daddr_t blkno;
caddr_t va;
size_t size;
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{
/* Not implemented. */
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return ENXIO;
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}