Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
b0db502d9c
NetBSD/sys/dev/scsipi/cd.c
mycroft 558c00c001 Fix spelling of `STEREO'.
1994-08-05 22:56:19 +00:00

1131 lines
30 KiB
C
Raw Blame History

/* $NetBSD: cd.c,v 1.33 1994/08/05 22:56:49 mycroft Exp $ */
/*
* Copyright (c) 1994 Charles 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:
* This product includes software developed by Charles 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)
* 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
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/dkbad.h>
#include <sys/systm.h>
#include <sys/conf.h>
#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>
#include <sys/disklabel.h>
#include <sys/disk.h>
#include <sys/cdio.h>
#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>
#ifdef DDB
int Debugger();
#else /* DDB */
#define Debugger()
#endif /* DDB */
#define CDOUTSTANDING 2
#define CDRETRIES 1
#define MAKECDDEV(maj, unit, part) \
(makedev((maj), ((unit) * MAXPARTITIONS) + (part)))
#define CDPART(z) (minor(z) % MAXPARTITIONS)
#define CDUNIT(z) (minor(z) / MAXPARTITIONS)
#ifndef RAW_PART
#define RAW_PART 3
#endif
struct cd_data {
struct device sc_dev;
struct dkdevice sc_dk;
struct scsi_link *sc_link; /* address of scsi low level switch */
u_int32 ad_info; /* info about the adapter */
u_int32 cmdscount; /* cmds allowed outstanding by board */
struct cd_parms {
u_int32 blksize;
u_long disksize; /* total number sectors */
} params;
int partflags[MAXPARTITIONS]; /* per partition flags */
#define CDOPEN 0x01
u_int32 openparts; /* one bit for each open partition */
u_int32 xfer_block_wait;
struct buf buf_queue;
};
void cdattach __P((struct device *, struct device *, void *));
struct cfdriver cdcd = {
NULL, "cd", scsi_targmatch, cdattach, DV_DISK, sizeof(struct cd_data)
};
int cdgetdisklabel __P((struct cd_data *));
int cd_get_parms __P((struct cd_data *, int));
void cdstrategy __P((struct buf *));
void cdstart __P((int));
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 */
NULL, /* use default 'done' routine */
"cd", /* we are to be refered to by this name */
0 /* no device specific flags */
};
#define CD_STOP 0
#define CD_START 1
#define CD_EJECT -2
/*
* 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;
{
struct cd_data *cd = (void *)self;
struct cd_parms *dp = &cd->params;
struct scsi_link *sc_link = aux;
SC_DEBUG(sc_link, SDEV_DB2, ("cdattach: "));
/*
* Store information needed to contact our base driver
*/
cd->sc_link = sc_link;
sc_link->device = &cd_switch;
sc_link->dev_unit = cd->sc_dev.dv_unit;
cd->sc_dk.dk_driver = &cddkdriver;
#if !defined(i386) || defined(NEWCONFIG)
dk_establish(&cd->sc_dk, &cd->sc_dev);
#endif
if (cd->sc_link->adapter->adapter_info) {
cd->ad_info = ((*(cd->sc_link->adapter->adapter_info)) (sc_link->adapter_softc));
cd->cmdscount = cd->ad_info & AD_INF_MAX_CMDS;
if (cd->cmdscount > CDOUTSTANDING)
cd->cmdscount = CDOUTSTANDING;
} else {
cd->ad_info = 1;
cd->cmdscount = 1;
}
sc_link->opennings = cd->cmdscount;
/*
* Use the subdriver to request information regarding
* the drive. We cannot use interrupts yet, so the
* request must specify this.
*/
cd_get_parms(cd, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT);
if (dp->disksize)
printf(": cd present, %d x %d byte records\n",
cd->params.disksize, cd->params.blksize);
else
printf(": drive empty\n");
}
/*
* open the device. Make sure the partition info is a up-to-date as can be.
*/
int
cdopen(dev)
dev_t dev;
{
int error = 0;
int unit, part;
struct cd_data *cd;
struct scsi_link *sc_link;
unit = CDUNIT(dev);
part = CDPART(dev);
if (unit >= cdcd.cd_ndevs)
return ENXIO;
cd = cdcd.cd_devs[unit];
if (!cd)
return ENXIO;
sc_link = cd->sc_link;
SC_DEBUG(sc_link, SDEV_DB1,
("cdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit,
cdcd.cd_ndevs, part));
/*
* If it's been invalidated, and not everybody has closed it then
* forbid re-entry. (may have changed media)
*/
if (!(sc_link->flags & SDEV_MEDIA_LOADED) && cd->openparts)
return ENXIO;
/*
* Check that it is still responding and ok.
* if the media has been changed this will result in a
* "unit attention" error which the error code will
* disregard because the SDEV_MEDIA_LOADED flag is not yet set
*/
scsi_test_unit_ready(sc_link, SCSI_SILENT);
/*
* In case it is a funny one, tell it to start
* not needed for some drives
*/
scsi_start(sc_link, SSS_START, SCSI_ERR_OK | SCSI_SILENT);
/*
* Next time actually take notice of error returns
*/
sc_link->flags |= SDEV_OPEN; /* unit attn errors are now errors */
if (scsi_test_unit_ready(sc_link, 0) != 0) {
SC_DEBUG(sc_link, SDEV_DB3, ("device not responding\n"));
error = ENXIO;
goto bad;
}
SC_DEBUG(sc_link, SDEV_DB3, ("device ok\n"));
/* Lock the pack in. */
scsi_prevent(sc_link, PR_PREVENT, SCSI_ERR_OK | SCSI_SILENT);
/*
* Load the physical device parameters
*/
if (cd_get_parms(cd, 0)) {
error = ENXIO;
goto bad;
}
SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded "));
/*
* Make up some partition information
*/
cdgetdisklabel(cd);
SC_DEBUG(sc_link, SDEV_DB3, ("Disklabel fabricated "));
/*
* Check the partition is legal
*/
if (part >= cd->sc_dk.dk_label.d_npartitions && part != RAW_PART) {
error = ENXIO;
goto bad;
}
SC_DEBUG(sc_link, SDEV_DB3, ("partition ok"));
/*
* Check that the partition exists
*/
if (cd->sc_dk.dk_label.d_partitions[part].p_fstype == FS_UNUSED &&
part != RAW_PART) {
error = ENXIO;
goto bad;
}
cd->partflags[part] |= CDOPEN;
cd->openparts |= (1 << part);
SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n"));
sc_link->flags |= SDEV_MEDIA_LOADED;
return 0;
bad:
if (!cd->openparts) {
scsi_prevent(sc_link, PR_ALLOW, SCSI_ERR_OK | SCSI_SILENT);
sc_link->flags &= ~SDEV_OPEN;
}
return error;
}
/*
* close the device.. only called if we are the LAST
* occurence of an open device
*/
int
cdclose(dev)
dev_t dev;
{
int unit, part;
struct cd_data *cd;
unit = CDUNIT(dev);
part = CDPART(dev);
cd = cdcd.cd_devs[unit];
cd->partflags[part] &= ~CDOPEN;
cd->openparts &= ~(1 << part);
if (!cd->openparts) {
scsi_prevent(cd->sc_link, PR_ALLOW, SCSI_ERR_OK | SCSI_SILENT);
cd->sc_link->flags &= ~SDEV_OPEN;
}
return 0;
}
/*
* trim the size of the transfer if needed,
* called by physio
* basically the smaller of our max and the scsi driver's
* minphys (note we have no max ourselves)
*
* Trim buffer length if buffer-size is bigger than page size
*/
void
cdminphys(bp)
struct buf *bp;
{
register struct cd_data *cd = cdcd.cd_devs[CDUNIT(bp->b_dev)];
(cd->sc_link->adapter->scsi_minphys) (bp);
}
/*
* 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;
{
struct buf *dp;
int opri;
struct cd_data *cd;
int unit;
unit = CDUNIT(bp->b_dev);
cd = cdcd.cd_devs[unit];
SC_DEBUG(cd->sc_link, SDEV_DB2, ("cdstrategy "));
SC_DEBUG(cd->sc_link, SDEV_DB1,
("%d bytes @ blk %d\n", bp->b_bcount, bp->b_blkno));
cdminphys(bp);
/*
* If the device has been made invalid, error out
* maybe the media changed
*/
if (!(cd->sc_link->flags & SDEV_MEDIA_LOADED)) {
bp->b_error = EIO;
goto bad;
}
/*
* can't ever write to a CD
*/
if ((bp->b_flags & B_READ) == 0) {
bp->b_error = EROFS;
goto bad;
}
/*
* If it's a null transfer, return immediately
*/
if (bp->b_bcount == 0)
goto done;
/*
* Decide which unit and partition we are talking about
*/
if (CDPART(bp->b_dev) != RAW_PART) {
/*
* do bounds checking, adjust transfer. if error, process.
* if end of partition, just return
*/
if (bounds_check_with_label(bp, &cd->sc_dk.dk_label, 1) <= 0)
goto done;
/* otherwise, process transfer request */
}
opri = splbio();
dp = &cd->buf_queue;
/*
* Place it in the queue of disk activities for this disk
*/
disksort(dp, bp);
/*
* Tell the device to get going on the transfer if it's
* not doing anything, otherwise just wait for completion
*/
cdstart(unit);
splx(opri);
return;
bad:
bp->b_flags |= B_ERROR;
done:
/*
* Correctly set the buf to indicate a completed xfer
*/
bp->b_resid = bp->b_bcount;
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
*/
void
cdstart(unit)
int unit;
{
register struct cd_data *cd = cdcd.cd_devs[unit];
register struct scsi_link *sc_link = cd->sc_link;
struct buf *bp = 0;
struct buf *dp;
struct scsi_rw_big cmd;
int blkno, nblks;
struct partition *p;
SC_DEBUG(sc_link, SDEV_DB2, ("cdstart "));
/*
* See if there is a buf to do and we are not already
* doing one
*/
while (sc_link->opennings) {
/*
* 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;
}
/*
* 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;
dp->b_actf = bp->b_actf;
/*
* If the deivce has become invalid, abort all the
* reads and writes until all files have been closed and
* re-openned
*/
if (!(sc_link->flags & SDEV_MEDIA_LOADED)) {
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
biodone(bp);
continue;
}
/*
* 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. Really a bit silly
* until we have real partitions, but.
*/
blkno = bp->b_blkno / (cd->params.blksize / 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 = (bp->b_bcount + (cd->params.blksize - 1)) /
cd->params.blksize;
/*
* Fill out the scsi command
*/
bzero(&cmd, sizeof(cmd));
cmd.op_code = (bp->b_flags & B_READ) ? READ_BIG : WRITE_BIG;
cmd.addr_3 = (blkno & 0xff000000) >> 24;
cmd.addr_2 = (blkno & 0xff0000) >> 16;
cmd.addr_1 = (blkno & 0xff00) >> 8;
cmd.addr_0 = blkno & 0xff;
cmd.length2 = (nblks & 0xff00) >> 8;
cmd.length1 = (nblks & 0xff);
/*
* Call the routine that chats with the adapter.
* Note: we cannot sleep as we may be an interrupt
*/
if (scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd,
sizeof(cmd), (u_char *) bp->b_data, bp->b_bcount,
CDRETRIES, 30000, bp, SCSI_NOSLEEP |
((bp->b_flags & B_READ) ? SCSI_DATA_IN : SCSI_DATA_OUT))
!= SUCCESSFULLY_QUEUED)
printf("%s: not queued", cd->sc_dev.dv_xname);
}
}
/*
* Perform special action on behalf of the user.
* Knows about the internals of this device
*/
int
cdioctl(dev, cmd, addr, flag)
dev_t dev;
int cmd;
caddr_t addr;
int flag;
{
int error;
int unit, part;
register struct cd_data *cd;
/*
* Find the device that the user is talking about
*/
unit = CDUNIT(dev);
part = CDPART(dev);
cd = cdcd.cd_devs[unit];
SC_DEBUG(cd->sc_link, SDEV_DB2, ("cdioctl 0x%x ", cmd));
/*
* If the device is not valid.. abandon ship
*/
if (!(cd->sc_link->flags & SDEV_MEDIA_LOADED))
return EIO;
switch (cmd) {
case DIOCSBAD:
return EINVAL;
case DIOCGDINFO:
*(struct disklabel *) addr = cd->sc_dk.dk_label;
return 0;
case DIOCGPART:
((struct partinfo *) addr)->disklab = &cd->sc_dk.dk_label;
((struct partinfo *) addr)->part =
&cd->sc_dk.dk_label.d_partitions[CDPART(dev)];
return 0;
/*
* a bit silly, but someone might want to test something on a
* section of cdrom.
*/
case DIOCWDINFO:
case DIOCSDINFO:
if ((flag & FWRITE) == 0)
return EBADF;
error = setdisklabel(&cd->sc_dk.dk_label,
(struct disklabel *) addr, 0, 0);
return error;
case DIOCWLABEL:
return EBADF;
case CDIOCPLAYTRACKS: {
struct ioc_play_track *args = (struct ioc_play_track *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
return error;
data.page.audio.flags &= ~CD_PA_SOTC;
data.page.audio.flags |= CD_PA_IMMED;
if (error = cd_set_mode(cd, &data))
return error;
return cd_play_tracks(cd, args->start_track, args->start_index,
args->end_track, args->end_index);
}
case CDIOCPLAYMSF: {
struct ioc_play_msf *args
= (struct ioc_play_msf *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
return error;
data.page.audio.flags &= ~CD_PA_SOTC;
data.page.audio.flags |= CD_PA_IMMED;
if (error = cd_set_mode(cd, &data))
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: {
struct ioc_play_blocks *args
= (struct ioc_play_blocks *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
return error;
data.page.audio.flags &= ~CD_PA_SOTC;
data.page.audio.flags |= CD_PA_IMMED;
if (error = cd_set_mode(cd, &data))
return error;
return cd_play(cd, args->blk, args->len);
}
case CDIOCREADSUBCHANNEL: {
struct ioc_read_subchannel *args
= (struct ioc_read_subchannel *) addr;
struct cd_sub_channel_info data;
u_int32 len = args->data_len;
if (len > sizeof(data) ||
len < sizeof(struct cd_sub_channel_header))
return EINVAL;
if (error = cd_read_subchannel(cd, args->address_format,
args->data_format, args->track, &data, len))
return error;
len = min(len, ((data.header.data_len[0] << 8) +
data.header.data_len[1] +
sizeof(struct cd_sub_channel_header)));
return copyout(&data, args->data, len);
}
case CDIOREADTOCHEADER: {
struct ioc_toc_header th;
if (error = cd_read_toc(cd, 0, 0, &th, sizeof(th)))
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 =
(struct ioc_read_toc_entry *) addr;
struct ioc_toc_header *th;
u_int32 len = te->data_len;
th = &data.header;
if (len > sizeof(data.entries) ||
len < sizeof(struct cd_toc_entry))
return EINVAL;
if (error = cd_read_toc(cd, te->address_format,
te->starting_track, (struct cd_toc_entry *) &data,
len + sizeof(struct ioc_toc_header)))
return error;
len = min(len, ntohs(th->len) - (sizeof(th->starting_track) +
sizeof(th->ending_track)));
return copyout(data.entries, te->data, len);
}
case CDIOCSETPATCH: {
struct ioc_patch *arg = (struct ioc_patch *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
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: {
struct ioc_vol *arg = (struct ioc_vol *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
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: {
struct ioc_vol *arg = (struct ioc_vol *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
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 ioc_vol *arg = (struct ioc_vol *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
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);
}
case CDIOCSETSTEREO: {
struct ioc_vol *arg = (struct ioc_vol *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
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 ioc_vol *arg = (struct ioc_vol *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
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 ioc_vol *arg = (struct ioc_vol *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
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 ioc_vol *arg = (struct ioc_vol *) addr;
struct cd_mode_data data;
if (error = cd_get_mode(cd, &data, AUDIO_PAGE))
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);
}
case CDIOCRESUME:
return cd_pause(cd, 1);
case CDIOCPAUSE:
return cd_pause(cd, 0);
case CDIOCSTART:
return scsi_start(cd->sc_link, SSS_START, 0);
case CDIOCSTOP:
return scsi_start(cd->sc_link, SSS_STOP, 0);
case CDIOCEJECT:
return scsi_start(cd->sc_link, 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 CDIOCSETDEBUG:
cd->sc_link->flags |= (SDEV_DB1 | SDEV_DB2);
return 0;
case CDIOCCLRDEBUG:
cd->sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2);
return 0;
case CDIOCRESET:
return cd_reset(cd);
default:
if (part != RAW_PART)
return ENOTTY;
return scsi_do_ioctl(cd->sc_link, cmd, addr, flag);
}
#ifdef DIAGNOSTIC
panic("cdioctl: impossible");
#endif
}
/*
* 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
*/
int
cdgetdisklabel(cd)
struct cd_data *cd;
{
char *errstring;
bzero(&cd->sc_dk.dk_label, sizeof(struct disklabel));
bzero(&cd->sc_dk.dk_cpulabel, sizeof(struct cpu_disklabel));
/*
* make partition 0 the whole disk
* remember that comparisons with the partition are done
* assuming the blocks are 512 bytes so fudge it.
*/
cd->sc_dk.dk_label.d_partitions[0].p_offset = 0;
cd->sc_dk.dk_label.d_partitions[0].p_size =
cd->params.disksize * (cd->params.blksize / DEV_BSIZE);
cd->sc_dk.dk_label.d_partitions[0].p_fstype = FS_ISO9660;
cd->sc_dk.dk_label.d_npartitions = 1;
cd->sc_dk.dk_label.d_secsize = cd->params.blksize;
cd->sc_dk.dk_label.d_ntracks = 1;
cd->sc_dk.dk_label.d_nsectors = 100;
cd->sc_dk.dk_label.d_ncylinders = (cd->params.disksize / 100) + 1;
cd->sc_dk.dk_label.d_secpercyl = 100;
strncpy(cd->sc_dk.dk_label.d_typename, "scsi cd_rom", 16);
strncpy(cd->sc_dk.dk_label.d_packname, "ficticious", 16);
cd->sc_dk.dk_label.d_secperunit = cd->params.disksize;
cd->sc_dk.dk_label.d_rpm = 300;
cd->sc_dk.dk_label.d_interleave = 1;
cd->sc_dk.dk_label.d_flags = D_REMOVABLE;
cd->sc_dk.dk_label.d_magic = DISKMAGIC;
cd->sc_dk.dk_label.d_magic2 = DISKMAGIC;
cd->sc_dk.dk_label.d_checksum = dkcksum(&cd->sc_dk.dk_label);
/*
* Signal to other users and routines that we now have a
* disklabel that represents the media (maybe)
*/
return 0;
}
/*
* Find out from the device what it's capacity is
*/
u_int32
cd_size(cd, flags)
struct cd_data *cd;
int flags;
{
struct scsi_read_cd_cap_data rdcap;
struct scsi_read_cd_capacity scsi_cmd;
u_int32 size, blksize;
/*
* make up a scsi command and ask the scsi driver to do
* it for you.
*/
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = READ_CD_CAPACITY;
/*
* 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,
sizeof(scsi_cmd), (u_char *) &rdcap, sizeof(rdcap), CDRETRIES,
20000, NULL, SCSI_DATA_IN | flags) != 0) {
if (!(flags & SCSI_SILENT))
printf("%s: could not get size\n",
cd->sc_dev.dv_xname);
return 0;
} else {
size = (rdcap.addr_3 << 24) + (rdcap.addr_2 << 16) +
(rdcap.addr_1 << 8) + rdcap.addr_0 + 1;
blksize = (rdcap.length_3 << 24) + (rdcap.length_2 << 16) +
(rdcap.length_1 << 8) + rdcap.length_0;
}
if (blksize < 512)
blksize = 2048; /* some drives lie ! */
if (size < 100)
size = 400000; /* ditto */
cd->params.disksize = size;
cd->params.blksize = blksize;
return size;
}
/*
* Get the requested page into the buffer given
*/
int
cd_get_mode(cd, data, page)
struct cd_data *cd;
struct cd_mode_data *data;
int page;
{
struct scsi_mode_sense scsi_cmd;
int error;
bzero(&scsi_cmd, sizeof(scsi_cmd));
bzero(data, sizeof(*data));
scsi_cmd.op_code = MODE_SENSE;
scsi_cmd.page = page;
scsi_cmd.length = sizeof(*data) & 0xff;
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);
}
/*
* Get the requested page into the buffer given
*/
int
cd_set_mode(cd, data)
struct cd_data *cd;
struct cd_mode_data *data;
{
struct scsi_mode_select scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = MODE_SELECT;
scsi_cmd.byte2 |= SMS_PF;
scsi_cmd.length = sizeof(*data) & 0xff;
data->header.data_length = 0;
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);
}
/*
* Get scsi driver to send a "start playing" command
*/
int
cd_play(cd, blkno, nblks)
struct cd_data *cd;
int blkno, nblks;
{
struct scsi_play scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = PLAY;
scsi_cmd.blk_addr[0] = (blkno >> 24) & 0xff;
scsi_cmd.blk_addr[1] = (blkno >> 16) & 0xff;
scsi_cmd.blk_addr[2] = (blkno >> 8) & 0xff;
scsi_cmd.blk_addr[3] = blkno & 0xff;
scsi_cmd.xfer_len[0] = (nblks >> 8) & 0xff;
scsi_cmd.xfer_len[1] = nblks & 0xff;
return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *) &scsi_cmd,
sizeof(scsi_cmd), 0, 0, CDRETRIES, 200000, NULL, 0);
}
/*
* Get scsi driver to send a "start playing" command
*/
int
cd_play_big(cd, blkno, nblks)
struct cd_data *cd;
int blkno, nblks;
{
struct scsi_play_big scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = PLAY_BIG;
scsi_cmd.blk_addr[0] = (blkno >> 24) & 0xff;
scsi_cmd.blk_addr[1] = (blkno >> 16) & 0xff;
scsi_cmd.blk_addr[2] = (blkno >> 8) & 0xff;
scsi_cmd.blk_addr[3] = blkno & 0xff;
scsi_cmd.xfer_len[0] = (nblks >> 24) & 0xff;
scsi_cmd.xfer_len[1] = (nblks >> 16) & 0xff;
scsi_cmd.xfer_len[2] = (nblks >> 8) & 0xff;
scsi_cmd.xfer_len[3] = nblks & 0xff;
return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *) &scsi_cmd,
sizeof(scsi_cmd), 0, 0, CDRETRIES, 20000, NULL, 0);
}
/*
* Get scsi driver to send a "start playing" command
*/
int
cd_play_tracks(cd, strack, sindex, etrack, eindex)
struct cd_data *cd;
int strack, sindex, etrack, eindex;
{
struct scsi_play_track scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = PLAY_TRACK;
scsi_cmd.start_track = strack;
scsi_cmd.start_index = sindex;
scsi_cmd.end_track = etrack;
scsi_cmd.end_index = eindex;
return scsi_scsi_cmd(cd->sc_link, (struct scsi_generic *) &scsi_cmd,
sizeof(scsi_cmd), 0, 0, CDRETRIES, 20000, NULL, 0);
}
/*
* Get scsi driver to send a "play msf" command
*/
int
cd_play_msf(cd, startm, starts, startf, endm, ends, endf)
struct cd_data *cd;
int startm, starts, startf, endm, ends, endf;
{
struct scsi_play_msf scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = 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;
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_data *cd;
int go;
{
struct scsi_pause scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = PAUSE;
scsi_cmd.resume = go;
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 "RESET" command
*/
int
cd_reset(cd)
struct cd_data *cd;
{
return scsi_scsi_cmd(cd->sc_link, 0, 0, 0, 0, CDRETRIES, 2000, NULL,
SCSI_RESET);
}
/*
* Read subchannel
*/
int
cd_read_subchannel(cd, mode, format, track, data, len)
struct cd_data *cd;
int mode, format, len;
struct cd_sub_channel_info *data;
{
struct scsi_read_subchannel scsi_cmd;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = 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;
scsi_cmd.data_len[0] = (len) >> 8;
scsi_cmd.data_len[1] = (len) & 0xff;
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);
}
/*
* Read table of contents
*/
int
cd_read_toc(cd, mode, start, data, len)
struct cd_data *cd;
int mode, start, len;
struct cd_toc_entry *data;
{
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.op_code = READ_TOC;
if (mode == CD_MSF_FORMAT)
scsi_cmd.byte2 |= CD_MSF;
scsi_cmd.from_track = start;
scsi_cmd.data_len[0] = (ntoc) >> 8;
scsi_cmd.data_len[1] = (ntoc) & 0xff;
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);
}
#define b2tol(a) (((unsigned)(a##_1) << 8) + (unsigned)a##_0)
/*
* 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_data *cd;
int flags;
{
/*
* First check if we have it all loaded
*/
if (cd->sc_link->flags & SDEV_MEDIA_LOADED)
return 0;
/*
* give a number of sectors so that sec * trks * cyls
* is <= disk_size
*/
if (!cd_size(cd, flags))
return ENXIO;
cd->sc_link->flags |= SDEV_MEDIA_LOADED;
return 0;
}
int
cdsize(dev)
dev_t dev;
{
return -1;
}
int
cddump()
{
/* Not implemented. */
return EINVAL;
}
Reference in New Issue View Git Blame Copy Permalink