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freebsd/sys/dev/scd/scd.c
Poul-Henning Kamp d6a0e38a1b Remove five now unused fields from struct cdevsw. They should never 
have been there in the first place.  A GENERIC kernel shrinks almost 1k.

Add a slightly different safetybelt under nostop for tty drivers.

Add some missing FreeBSD tags
1999-09-25 18:24:47 +00:00

1556 lines
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/*-
* Copyright (c) 1995 Mikael Hybsch
* All rights reserved.
*
* Portions of this file are copied from mcd.c
* which has the following copyrights:
*
* Copyright 1993 by Holger Veit (data part)
* Copyright 1993 by Brian Moore (audio part)
* Changes Copyright 1993 by Gary Clark II
* Changes Copyright (C) 1994 by Andrew A. Chernov
*
* Rewrote probe routine to work on newer Mitsumi drives.
* Additional changes (C) 1994 by Jordan K. Hubbard
*
* 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
* in this position and unchanged.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software withough 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.
*
*/
/* $FreeBSD$ */
/* Please send any comments to micke@dynas.se */
#define SCD_DEBUG 0
#include "scd.h"
#if NSCD > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/buf.h>
#include <sys/cdio.h>
#include <sys/disklabel.h>
#include <sys/kernel.h>
#include <machine/clock.h>
#include <machine/stdarg.h>
#include <i386/isa/isa_device.h>
#include <i386/isa/scdreg.h>
#define scd_part(dev) ((minor(dev)) & 7)
#define scd_unit(dev) (((minor(dev)) & 0x38) >> 3)
#define scd_phys(dev) (((minor(dev)) & 0x40) >> 6)
#define RAW_PART 2
/* flags */
#define SCDOPEN 0x0001 /* device opened */
#define SCDVALID 0x0002 /* parameters loaded */
#define SCDINIT 0x0004 /* device is init'd */
#define SCDPROBING 0x0020 /* probing */
#define SCDTOC 0x0100 /* already read toc */
#define SCDMBXBSY 0x0200 /* local mbx is busy */
#define SCDSPINNING 0x0400 /* drive is spun up */
#define SCD_S_BEGIN 0
#define SCD_S_BEGIN1 1
#define SCD_S_WAITSTAT 2
#define SCD_S_WAITFIFO 3
#define SCD_S_WAITSPIN 4
#define SCD_S_WAITREAD 5
#define SCD_S_WAITPARAM 6
#define RDELAY_WAIT 300
#define RDELAY_WAITREAD 300
#define SCDBLKSIZE 2048
#ifdef SCD_DEBUG
static int scd_debuglevel = SCD_DEBUG;
# define XDEBUG(level, data) {if (scd_debuglevel >= level) printf data;}
#else
# define XDEBUG(level, data)
#endif
struct scd_mbx {
short unit;
short port;
short retry;
short nblk;
int sz;
u_long skip;
struct buf *bp;
int p_offset;
short count;
};
static struct scd_data {
int iobase;
char double_speed;
char *name;
short flags;
int blksize;
u_long disksize;
struct disklabel dlabel;
int openflag;
struct {
unsigned int adr :4;
unsigned int ctl :4; /* xcdplayer needs this */
unsigned char start_msf[3];
} toc[MAX_TRACKS];
short first_track;
short last_track;
struct ioc_play_msf last_play;
short audio_status;
struct buf_queue_head head; /* head of buf queue */
struct scd_mbx mbx;
} scd_data[NSCD];
/* prototypes */
static void hsg2msf(int hsg, bcd_t *msf);
static int msf2hsg(bcd_t *msf);
static void process_attention(unsigned unit);
static __inline void write_control(unsigned port, unsigned data);
static int waitfor_status_bits(int unit, int bits_set, int bits_clear);
static int send_cmd(u_int unit, u_char cmd, u_int nargs, ...);
static void init_drive(unsigned unit);
static int spin_up(unsigned unit);
static int read_toc(unsigned unit);
static int get_result(u_int unit, int result_len, u_char *result);
static void print_error(int unit, int errcode);
static void scd_start(int unit);
static timeout_t scd_timeout;
static void scd_doread(int state, struct scd_mbx *mbxin);
static int scd_eject(int unit);
static int scd_stop(int unit);
static int scd_pause(int unit);
static int scd_resume(int unit);
static int scd_playtracks(int unit, struct ioc_play_track *pt);
static int scd_playmsf(int unit, struct ioc_play_msf *msf);
static int scd_play(int unit, struct ioc_play_msf *msf);
static int scd_subchan(int unit, struct ioc_read_subchannel *sc);
static int read_subcode(int unit, struct sony_subchannel_position_data *sc);
/* for xcdplayer */
static int scd_toc_header(int unit, struct ioc_toc_header *th);
static int scd_toc_entrys(int unit, struct ioc_read_toc_entry *te);
static int scd_toc_entry(int unit, struct ioc_read_toc_single_entry *te);
#define SCD_LASTPLUS1 170 /* don't ask, xcdplayer passes this in */
static int scd_probe(struct isa_device *dev);
static int scd_attach(struct isa_device *dev);
struct isa_driver scddriver = { scd_probe, scd_attach, "scd" };
/* For canceling our timeout */
static struct callout_handle tohandle = CALLOUT_HANDLE_INITIALIZER(&tohanle);
static d_open_t scdopen;
static d_close_t scdclose;
static d_ioctl_t scdioctl;
static d_strategy_t scdstrategy;
#define CDEV_MAJOR 45
#define BDEV_MAJOR 16
static struct cdevsw scd_cdevsw = {
/* open */ scdopen,
/* close */ scdclose,
/* read */ physread,
/* write */ nowrite,
/* ioctl */ scdioctl,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ scdstrategy,
/* name */ "scd",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ D_DISK,
/* bmaj */ BDEV_MAJOR
};
static int
scd_attach(struct isa_device *dev)
{
int unit = dev->id_unit;
struct scd_data *cd = scd_data + unit;
cd->iobase = dev->id_iobase; /* Already set by probe, but ... */
/* name filled in probe */
printf("scd%d: <%s>\n", dev->id_unit, scd_data[dev->id_unit].name);
init_drive(dev->id_unit);
cd->flags = SCDINIT;
cd->audio_status = CD_AS_AUDIO_INVALID;
bufq_init(&cd->head);
make_dev(&scd_cdevsw, dkmakeminor(unit, 0, 0),
UID_ROOT, GID_OPERATOR, 0640, "rscd%da", unit);
make_dev(&scd_cdevsw, dkmakeminor(unit, 0, RAW_PART),
UID_ROOT, GID_OPERATOR, 0640, "rscd%dc", unit);
make_dev(&scd_cdevsw, dkmakeminor(unit, 0, 0),
UID_ROOT, GID_OPERATOR, 0640, "scd%da", unit);
make_dev(&scd_cdevsw, dkmakeminor(unit, 0, RAW_PART),
UID_ROOT, GID_OPERATOR, 0640, "scd%dc", unit);
return 1;
}
static int
scdopen(dev_t dev, int flags, int fmt, struct proc *p)
{
int unit,part,phys;
int rc;
struct scd_data *cd;
unit = scd_unit(dev);
if (unit >= NSCD)
return ENXIO;
cd = scd_data + unit;
part = scd_part(dev);
phys = scd_phys(dev);
/* not initialized*/
if (!(cd->flags & SCDINIT))
return ENXIO;
/* invalidated in the meantime? mark all open part's invalid */
if (cd->openflag)
return ENXIO;
XDEBUG(1,("scd%d: DEBUG: status = 0x%x\n", unit, inb(cd->iobase+IREG_STATUS)));
if ((rc = spin_up(unit)) != 0) {
print_error(unit, rc);
return EIO;
}
if (!(cd->flags & SCDTOC)) {
int loop_count = 3;
while (loop_count-- > 0 && (rc = read_toc(unit)) != 0) {
if (rc == ERR_NOT_SPINNING) {
rc = spin_up(unit);
if (rc) {
print_error(unit, rc);\
return EIO;
}
continue;
}
printf("scd%d: TOC read error 0x%x\n", unit, rc);
return EIO;
}
}
dev->si_bsize_phys = cd->blksize;
cd->openflag = 1;
cd->flags |= SCDVALID;
return 0;
}
static int
scdclose(dev_t dev, int flags, int fmt, struct proc *p)
{
int unit,part,phys;
struct scd_data *cd;
unit = scd_unit(dev);
if (unit >= NSCD)
return ENXIO;
cd = scd_data + unit;
part = scd_part(dev);
phys = scd_phys(dev);
if (!(cd->flags & SCDINIT) || !cd->openflag)
return ENXIO;
if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS) {
(void)send_cmd(unit, CMD_SPIN_DOWN, 0);
cd->flags &= ~SCDSPINNING;
}
/* close channel */
cd->openflag = 0;
return 0;
}
static void
scdstrategy(struct buf *bp)
{
struct scd_data *cd;
int s;
int unit = scd_unit(bp->b_dev);
cd = scd_data + unit;
XDEBUG(2, ("scd%d: DEBUG: strategy: block=%ld, bcount=%ld\n",
unit, (long)bp->b_blkno, bp->b_bcount));
if (unit >= NSCD || bp->b_blkno < 0 || (bp->b_bcount % SCDBLKSIZE)) {
printf("scd%d: strategy failure: blkno = %ld, bcount = %ld\n",
unit, (long)bp->b_blkno, bp->b_bcount);
bp->b_error = EINVAL;
bp->b_flags |= B_ERROR;
goto bad;
}
/* if device invalidated (e.g. media change, door open), error */
if (!(cd->flags & SCDVALID)) {
printf("scd%d: media changed\n", unit);
bp->b_error = EIO;
goto bad;
}
/* read only */
if (!(bp->b_flags & B_READ)) {
bp->b_error = EROFS;
goto bad;
}
/* no data to read */
if (bp->b_bcount == 0)
goto done;
if (!(cd->flags & SCDTOC)) {
bp->b_error = EIO;
goto bad;
}
/* adjust transfer if necessary */
if (bounds_check_with_label(bp,&cd->dlabel,1) <= 0)
goto done;
bp->b_pblkno = bp->b_blkno;
bp->b_resid = 0;
/* queue it */
s = splbio();
bufqdisksort(&cd->head, bp);
splx(s);
/* now check whether we can perform processing */
scd_start(unit);
return;
bad:
bp->b_flags |= B_ERROR;
done:
bp->b_resid = bp->b_bcount;
biodone(bp);
return;
}
static void
scd_start(int unit)
{
struct scd_data *cd = scd_data + unit;
struct buf *bp;
struct partition *p;
int s = splbio();
if (cd->flags & SCDMBXBSY) {
splx(s);
return;
}
bp = bufq_first(&cd->head);
if (bp != 0) {
/* block found to process, dequeue */
bufq_remove(&cd->head, bp);
cd->flags |= SCDMBXBSY;
splx(s);
} else {
/* nothing to do */
splx(s);
return;
}
p = cd->dlabel.d_partitions + scd_part(bp->b_dev);
cd->mbx.unit = unit;
cd->mbx.port = cd->iobase;
cd->mbx.retry = 3;
cd->mbx.bp = bp;
cd->mbx.p_offset = p->p_offset;
splx(s);
scd_doread(SCD_S_BEGIN,&(cd->mbx));
return;
}
static int
scdioctl(dev_t dev, u_long cmd, caddr_t addr, int flags, struct proc *p)
{
struct scd_data *cd;
int unit,part;
unit = scd_unit(dev);
part = scd_part(dev);
cd = scd_data + unit;
XDEBUG(1, ("scd%d: ioctl: cmd=0x%lx\n", unit, cmd));
if (!(cd->flags & SCDVALID))
return EIO;
switch (cmd) {
case DIOCGDINFO:
*(struct disklabel *)addr = cd->dlabel;
return 0;
case DIOCGPART:
((struct partinfo *)addr)->disklab = &cd->dlabel;
((struct partinfo *)addr)->part =
&cd->dlabel.d_partitions[0];
return 0;
case CDIOCPLAYTRACKS:
return scd_playtracks(unit, (struct ioc_play_track *) addr);
case CDIOCPLAYBLOCKS:
return EINVAL;
case CDIOCPLAYMSF:
return scd_playmsf(unit, (struct ioc_play_msf *) addr);
case CDIOCREADSUBCHANNEL:
return scd_subchan(unit, (struct ioc_read_subchannel *) addr);
case CDIOREADTOCHEADER:
return scd_toc_header (unit, (struct ioc_toc_header *) addr);
case CDIOREADTOCENTRYS:
return scd_toc_entrys (unit, (struct ioc_read_toc_entry*) addr);
case CDIOREADTOCENTRY:
return scd_toc_entry (unit, (struct ioc_read_toc_single_entry*) addr);
case CDIOCSETPATCH:
case CDIOCGETVOL:
case CDIOCSETVOL:
case CDIOCSETMONO:
case CDIOCSETSTERIO:
case CDIOCSETMUTE:
case CDIOCSETLEFT:
case CDIOCSETRIGHT:
return EINVAL;
case CDIOCRESUME:
return scd_resume(unit);
case CDIOCPAUSE:
return scd_pause(unit);
case CDIOCSTART:
return EINVAL;
case CDIOCSTOP:
return scd_stop(unit);
case CDIOCEJECT:
return scd_eject(unit);
case CDIOCALLOW:
return 0;
case CDIOCSETDEBUG:
#ifdef SCD_DEBUG
scd_debuglevel++;
#endif
return 0;
case CDIOCCLRDEBUG:
#ifdef SCD_DEBUG
scd_debuglevel = 0;
#endif
return 0;
default:
printf("scd%d: unsupported ioctl (cmd=0x%lx)\n", unit, cmd);
return ENOTTY;
}
}
/***************************************************************
* lower level of driver starts here
**************************************************************/
static int
scd_playtracks(int unit, struct ioc_play_track *pt)
{
struct scd_data *cd = scd_data + unit;
struct ioc_play_msf msf;
int a = pt->start_track;
int z = pt->end_track;
int rc;
if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) {
if (rc == -ERR_NOT_SPINNING) {
if (spin_up(unit) != 0)
return EIO;
rc = read_toc(unit);
}
if (rc != 0) {
print_error(unit, rc);
return EIO;
}
}
XDEBUG(1, ("scd%d: playtracks from %d:%d to %d:%d\n", unit,
a, pt->start_index, z, pt->end_index));
if ( a < cd->first_track
|| a > cd->last_track
|| a > z
|| z > cd->last_track)
return EINVAL;
bcopy(cd->toc[a].start_msf, &msf.start_m, 3);
hsg2msf(msf2hsg(cd->toc[z+1].start_msf)-1, &msf.end_m);
return scd_play(unit, &msf);
}
/* The start/end msf is expected to be in bin format */
static int
scd_playmsf(int unit, struct ioc_play_msf *msfin)
{
struct ioc_play_msf msf;
msf.start_m = bin2bcd(msfin->start_m);
msf.start_s = bin2bcd(msfin->start_s);
msf.start_f = bin2bcd(msfin->start_f);
msf.end_m = bin2bcd(msfin->end_m);
msf.end_s = bin2bcd(msfin->end_s);
msf.end_f = bin2bcd(msfin->end_f);
return scd_play(unit, &msf);
}
/* The start/end msf is expected to be in bcd format */
static int
scd_play(int unit, struct ioc_play_msf *msf)
{
struct scd_data *cd = scd_data + unit;
int i, rc;
XDEBUG(1, ("scd%d: playing: %02x:%02x:%02x -> %02x:%02x:%02x\n", unit,
msf->start_m, msf->start_s, msf->start_f,
msf->end_m, msf->end_s, msf->end_f));
for (i = 0; i < 2; i++) {
rc = send_cmd(unit, CMD_PLAY_AUDIO, 7,
0x03,
msf->start_m, msf->start_s, msf->start_f,
msf->end_m, msf->end_s, msf->end_f);
if (rc == -ERR_NOT_SPINNING) {
cd->flags &= ~SCDSPINNING;
if (spin_up(unit) != 0)
return EIO;
} else if (rc < 0) {
print_error(unit, rc);
return EIO;
} else {
break;
}
}
cd->audio_status = CD_AS_PLAY_IN_PROGRESS;
bcopy((char *)msf, (char *)&cd->last_play, sizeof(struct ioc_play_msf));
return 0;
}
static int
scd_stop(int unit)
{
struct scd_data *cd = scd_data + unit;
(void)send_cmd(unit, CMD_STOP_AUDIO, 0);
cd->audio_status = CD_AS_PLAY_COMPLETED;
return 0;
}
static int
scd_pause(int unit)
{
struct scd_data *cd = scd_data + unit;
struct sony_subchannel_position_data subpos;
if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS)
return EINVAL;
if (read_subcode(unit, &subpos) != 0)
return EIO;
if (send_cmd(unit, CMD_STOP_AUDIO, 0) != 0)
return EIO;
cd->last_play.start_m = subpos.abs_msf[0];
cd->last_play.start_s = subpos.abs_msf[1];
cd->last_play.start_f = subpos.abs_msf[2];
cd->audio_status = CD_AS_PLAY_PAUSED;
XDEBUG(1, ("scd%d: pause @ %02x:%02x:%02x\n", unit,
cd->last_play.start_m,
cd->last_play.start_s,
cd->last_play.start_f));
return 0;
}
static int
scd_resume(int unit)
{
if (scd_data[unit].audio_status != CD_AS_PLAY_PAUSED)
return EINVAL;
return scd_play(unit, &scd_data[unit].last_play);
}
static int
scd_eject(int unit)
{
struct scd_data *cd = scd_data + unit;
cd->audio_status = CD_AS_AUDIO_INVALID;
cd->flags &= ~(SCDSPINNING|SCDTOC);
if (send_cmd(unit, CMD_STOP_AUDIO, 0) != 0 ||
send_cmd(unit, CMD_SPIN_DOWN, 0) != 0 ||
send_cmd(unit, CMD_EJECT, 0) != 0)
{
return EIO;
}
return 0;
}
static int
scd_subchan(int unit, struct ioc_read_subchannel *sc)
{
struct scd_data *cd = scd_data + unit;
struct sony_subchannel_position_data q;
struct cd_sub_channel_info data;
XDEBUG(1, ("scd%d: subchan af=%d, df=%d\n", unit,
sc->address_format,
sc->data_format));
if (sc->address_format != CD_MSF_FORMAT)
return EINVAL;
if (sc->data_format != CD_CURRENT_POSITION)
return EINVAL;
if (read_subcode(unit, &q) != 0)
return EIO;
data.header.audio_status = cd->audio_status;
data.what.position.data_format = CD_MSF_FORMAT;
data.what.position.track_number = bcd2bin(q.track_number);
data.what.position.reladdr.msf.unused = 0;
data.what.position.reladdr.msf.minute = bcd2bin(q.rel_msf[0]);
data.what.position.reladdr.msf.second = bcd2bin(q.rel_msf[1]);
data.what.position.reladdr.msf.frame = bcd2bin(q.rel_msf[2]);
data.what.position.absaddr.msf.unused = 0;
data.what.position.absaddr.msf.minute = bcd2bin(q.abs_msf[0]);
data.what.position.absaddr.msf.second = bcd2bin(q.abs_msf[1]);
data.what.position.absaddr.msf.frame = bcd2bin(q.abs_msf[2]);
if (copyout(&data, sc->data, min(sizeof(struct cd_sub_channel_info), sc->data_len))!=0)
return EFAULT;
return 0;
}
static __inline void
write_control(unsigned port, unsigned data)
{
outb(port + OREG_CONTROL, data);
}
static int
scd_probe(struct isa_device *dev)
{
struct sony_drive_configuration drive_config;
int unit = dev->id_unit;
int rc;
static char namebuf[8+16+8+3];
char *s = namebuf;
int loop_count = 0;
static int once;
if (!once++)
cdevsw_add(&scd_cdevsw);
scd_data[unit].flags = SCDPROBING;
scd_data[unit].iobase = dev->id_iobase;
bzero(&drive_config, sizeof(drive_config));
again:
/* Reset drive */
write_control(dev->id_iobase, CBIT_RESET_DRIVE);
/* Calm down */
DELAY(300000);
/* Only the ATTENTION bit may be set */
if ((inb(dev->id_iobase+IREG_STATUS) & ~1) != 0) {
XDEBUG(1, ("scd: too many bits set. probe failed.\n"));
return 0;
}
rc = send_cmd(unit, CMD_GET_DRIVE_CONFIG, 0);
if (rc != sizeof(drive_config)) {
/* Sometimes if the drive is playing audio I get */
/* the bad result 82. Fix by repeating the reset */
if (rc > 0 && loop_count++ == 0)
goto again;
return 0;
}
if (get_result(unit, rc, (u_char *)&drive_config) != 0)
return 0;
bcopy(drive_config.vendor, namebuf, 8);
s = namebuf+8;
while (*(s-1) == ' ') /* Strip trailing spaces */
s--;
*s++ = ' ';
bcopy(drive_config.product, s, 16);
s += 16;
while (*(s-1) == ' ')
s--;
*s++ = ' ';
bcopy(drive_config.revision, s, 8);
s += 8;
while (*(s-1) == ' ')
s--;
*s = 0;
scd_data[unit].name = namebuf;
if (drive_config.config & 0x10)
scd_data[unit].double_speed = 1;
else
scd_data[unit].double_speed = 0;
return 4;
}
static int
read_subcode(int unit, struct sony_subchannel_position_data *sc)
{
int rc;
rc = send_cmd(unit, CMD_GET_SUBCHANNEL_DATA, 0);
if (rc < 0 || rc < sizeof(*sc))
return EIO;
if (get_result(unit, rc, (u_char *)sc) != 0)
return EIO;
return 0;
}
/* State machine copied from mcd.c */
/* This (and the code in mcd.c) will not work with more than one drive */
/* because there is only one mbxsave below. Should fix that some day. */
/* (mbxsave & state should probably be included in the scd_data struct and */
/* the unit number used as first argument to scd_doread().) /Micke */
/* state machine to process read requests
* initialize with SCD_S_BEGIN: reset state machine
* SCD_S_WAITSTAT: wait for ready (!busy)
* SCD_S_WAITSPIN: wait for drive to spin up (if not spinning)
* SCD_S_WAITFIFO: wait for param fifo to get ready, them exec. command.
* SCD_S_WAITREAD: wait for data ready, read data
* SCD_S_WAITPARAM: wait for command result params, read them, error if bad data read.
*/
static struct scd_mbx *mbxsave;
static void
scd_timeout(void *arg)
{
scd_doread((int)arg, mbxsave);
}
static void
scd_doread(int state, struct scd_mbx *mbxin)
{
struct scd_mbx *mbx = (state!=SCD_S_BEGIN) ? mbxsave : mbxin;
int unit = mbx->unit;
int port = mbx->port;
struct buf *bp = mbx->bp;
struct scd_data *cd = scd_data + unit;
int reg,i;
int blknum;
caddr_t addr;
static char sdata[3]; /* Must be preserved between calls to this function */
loop:
switch (state) {
case SCD_S_BEGIN:
mbx = mbxsave = mbxin;
case SCD_S_BEGIN1:
/* get status */
mbx->count = RDELAY_WAIT;
process_attention(unit);
goto trystat;
case SCD_S_WAITSTAT:
untimeout(scd_timeout,(caddr_t)SCD_S_WAITSTAT, tohandle);
if (mbx->count-- <= 0) {
printf("scd%d: timeout. drive busy.\n",unit);
goto harderr;
}
trystat:
if (IS_BUSY(port)) {
tohandle = timeout(scd_timeout,
(caddr_t)SCD_S_WAITSTAT,hz/100); /* XXX */
return;
}
process_attention(unit);
/* reject, if audio active */
if (cd->audio_status & CD_AS_PLAY_IN_PROGRESS) {
printf("scd%d: audio is active\n",unit);
goto harderr;
}
mbx->sz = cd->blksize;
/* for first block */
mbx->nblk = (bp->b_bcount + (mbx->sz-1)) / mbx->sz;
mbx->skip = 0;
nextblock:
if (!(cd->flags & SCDVALID))
goto changed;
blknum = (bp->b_blkno / (mbx->sz/DEV_BSIZE))
+ mbx->p_offset + mbx->skip/mbx->sz;
XDEBUG(2, ("scd%d: scd_doread: read blknum=%d\n", unit, blknum));
/* build parameter block */
hsg2msf(blknum, sdata);
write_control(port, CBIT_RESULT_READY_CLEAR);
write_control(port, CBIT_RPARAM_CLEAR);
write_control(port, CBIT_DATA_READY_CLEAR);
if (FSTATUS_BIT(port, FBIT_WPARAM_READY))
goto writeparam;
mbx->count = 100;
tohandle = timeout(scd_timeout,
(caddr_t)SCD_S_WAITFIFO,hz/100); /* XXX */
return;
case SCD_S_WAITSPIN:
untimeout(scd_timeout,(caddr_t)SCD_S_WAITSPIN, tohandle);
if (mbx->count-- <= 0) {
printf("scd%d: timeout waiting for drive to spin up.\n", unit);
goto harderr;
}
if (!STATUS_BIT(port, SBIT_RESULT_READY)) {
tohandle = timeout(scd_timeout,
(caddr_t)SCD_S_WAITSPIN,hz/100); /* XXX */
return;
}
write_control(port, CBIT_RESULT_READY_CLEAR);
switch ((i = inb(port+IREG_RESULT)) & 0xf0) {
case 0x20:
i = inb(port+IREG_RESULT);
print_error(unit, i);
goto harderr;
case 0x00:
(void)inb(port+IREG_RESULT);
cd->flags |= SCDSPINNING;
break;
}
XDEBUG(1, ("scd%d: DEBUG: spin up complete\n", unit));
state = SCD_S_BEGIN1;
goto loop;
case SCD_S_WAITFIFO:
untimeout(scd_timeout,(caddr_t)SCD_S_WAITFIFO, tohandle);
if (mbx->count-- <= 0) {
printf("scd%d: timeout. write param not ready.\n",unit);
goto harderr;
}
if (!FSTATUS_BIT(port, FBIT_WPARAM_READY)) {
tohandle = timeout(scd_timeout,
(caddr_t)SCD_S_WAITFIFO,hz/100); /* XXX */
return;
}
XDEBUG(1, ("scd%d: mbx->count (writeparamwait) = %d(%d)\n", unit, mbx->count, 100));
writeparam:
/* The reason this test isn't done 'till now is to make sure */
/* that it is ok to send the SPIN_UP cmd below. */
if (!(cd->flags & SCDSPINNING)) {
XDEBUG(1, ("scd%d: spinning up drive ...\n", unit));
outb(port+OREG_COMMAND, CMD_SPIN_UP);
mbx->count = 300;
tohandle = timeout(scd_timeout,
(caddr_t)SCD_S_WAITSPIN,hz/100); /* XXX */
return;
}
reg = port + OREG_WPARAMS;
/* send the read command */
disable_intr();
outb(reg, sdata[0]);
outb(reg, sdata[1]);
outb(reg, sdata[2]);
outb(reg, 0);
outb(reg, 0);
outb(reg, 1);
outb(port+OREG_COMMAND, CMD_READ);
enable_intr();
mbx->count = RDELAY_WAITREAD;
for (i = 0; i < 50; i++) {
if (STATUS_BIT(port, SBIT_DATA_READY))
goto got_data;
DELAY(100);
}
tohandle = timeout(scd_timeout,
(caddr_t)SCD_S_WAITREAD,hz/100); /* XXX */
return;
case SCD_S_WAITREAD:
untimeout(scd_timeout,(caddr_t)SCD_S_WAITREAD, tohandle);
if (mbx->count-- <= 0) {
if (STATUS_BIT(port, SBIT_RESULT_READY))
goto got_param;
printf("scd%d: timeout while reading data\n",unit);
goto readerr;
}
if (!STATUS_BIT(port, SBIT_DATA_READY)) {
process_attention(unit);
if (!(cd->flags & SCDVALID))
goto changed;
tohandle = timeout(scd_timeout,
(caddr_t)SCD_S_WAITREAD,hz/100); /* XXX */
return;
}
XDEBUG(2, ("scd%d: mbx->count (after RDY_BIT) = %d(%d)\n", unit, mbx->count, RDELAY_WAITREAD));
got_data:
/* data is ready */
addr = bp->b_data + mbx->skip;
write_control(port, CBIT_DATA_READY_CLEAR);
insb(port+IREG_DATA, addr, mbx->sz);
mbx->count = 100;
for (i = 0; i < 20; i++) {
if (STATUS_BIT(port, SBIT_RESULT_READY))
goto waitfor_param;
DELAY(100);
}
goto waitfor_param;
case SCD_S_WAITPARAM:
untimeout(scd_timeout,(caddr_t)SCD_S_WAITPARAM, tohandle);
if (mbx->count-- <= 0) {
printf("scd%d: timeout waiting for params\n",unit);
goto readerr;
}
waitfor_param:
if (!STATUS_BIT(port, SBIT_RESULT_READY)) {
tohandle = timeout(scd_timeout,
(caddr_t)SCD_S_WAITPARAM,hz/100); /* XXX */
return;
}
#if SCD_DEBUG
if (mbx->count < 100 && scd_debuglevel > 0)
printf("scd%d: mbx->count (paramwait) = %d(%d)\n", unit, mbx->count, 100);
#endif
got_param:
write_control(port, CBIT_RESULT_READY_CLEAR);
switch ((i = inb(port+IREG_RESULT)) & 0xf0) {
case 0x50:
switch (i) {
case ERR_FATAL_READ_ERROR1:
case ERR_FATAL_READ_ERROR2:
printf("scd%d: unrecoverable read error 0x%x\n", unit, i);
goto harderr;
}
break;
case 0x20:
i = inb(port+IREG_RESULT);
switch (i) {
case ERR_NOT_SPINNING:
XDEBUG(1, ("scd%d: read error: drive not spinning\n", unit));
if (mbx->retry-- > 0) {
state = SCD_S_BEGIN1;
cd->flags &= ~SCDSPINNING;
goto loop;
}
goto harderr;
default:
print_error(unit, i);
goto readerr;
}
case 0x00:
i = inb(port+IREG_RESULT);
break;
}
if (--mbx->nblk > 0) {
mbx->skip += mbx->sz;
goto nextblock;
}
/* return buffer */
bp->b_resid = 0;
biodone(bp);
cd->flags &= ~SCDMBXBSY;
scd_start(mbx->unit);
return;
}
readerr:
if (mbx->retry-- > 0) {
printf("scd%d: retrying ...\n",unit);
state = SCD_S_BEGIN1;
goto loop;
}
harderr:
/* invalidate the buffer */
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
bp->b_resid = bp->b_bcount;
biodone(bp);
cd->flags &= ~SCDMBXBSY;
scd_start(mbx->unit);
return;
changed:
printf("scd%d: media changed\n", unit);
goto harderr;
}
static void
hsg2msf(int hsg, bcd_t *msf)
{
hsg += 150;
M_msf(msf) = bin2bcd(hsg / 4500);
hsg %= 4500;
S_msf(msf) = bin2bcd(hsg / 75);
F_msf(msf) = bin2bcd(hsg % 75);
}
static int
msf2hsg(bcd_t *msf)
{
return (bcd2bin(M_msf(msf)) * 60 +
bcd2bin(S_msf(msf))) * 75 +
bcd2bin(F_msf(msf)) - 150;
}
static void
process_attention(unsigned unit)
{
unsigned port = scd_data[unit].iobase;
unsigned char code;
int count = 0;
while (IS_ATTENTION(port) && count++ < 30) {
write_control(port, CBIT_ATTENTION_CLEAR);
code = inb(port+IREG_RESULT);
#if SCD_DEBUG
if (scd_debuglevel > 0) {
if (count == 1)
printf("scd%d: DEBUG: ATTENTIONS = 0x%x", unit, code);
else
printf(",0x%x", code);
}
#endif
switch (code) {
case ATTEN_SPIN_DOWN:
scd_data[unit].flags &= ~SCDSPINNING;
break;
case ATTEN_SPIN_UP_DONE:
scd_data[unit].flags |= SCDSPINNING;
break;
case ATTEN_AUDIO_DONE:
scd_data[unit].audio_status = CD_AS_PLAY_COMPLETED;
break;
case ATTEN_DRIVE_LOADED:
scd_data[unit].flags &= ~(SCDTOC|SCDSPINNING|SCDVALID);
scd_data[unit].audio_status = CD_AS_AUDIO_INVALID;
break;
case ATTEN_EJECT_PUSHED:
scd_data[unit].flags &= ~SCDVALID;
break;
}
DELAY(100);
}
#if SCD_DEBUG
if (scd_debuglevel > 0 && count > 0)
printf("\n");
#endif
}
/* Returns 0 OR sony error code */
static int
spin_up(unsigned unit)
{
unsigned char res_reg[12];
unsigned int res_size;
int rc;
int loop_count = 0;
again:
rc = send_cmd(unit, CMD_SPIN_UP, 0, 0, res_reg, &res_size);
if (rc != 0) {
XDEBUG(2, ("scd%d: CMD_SPIN_UP error 0x%x\n", unit, rc));
return rc;
}
if (!(scd_data[unit].flags & SCDTOC)) {
rc = send_cmd(unit, CMD_READ_TOC, 0);
if (rc == ERR_NOT_SPINNING) {
if (loop_count++ < 3)
goto again;
return rc;
}
if (rc != 0)
return rc;
}
scd_data[unit].flags |= SCDSPINNING;
return 0;
}
static struct sony_tracklist *
get_tl(struct sony_toc *toc, int size)
{
struct sony_tracklist *tl = &toc->tracks[0];
if (tl->track != 0xb0)
return tl;
(char *)tl += 9;
if (tl->track != 0xb1)
return tl;
(char *)tl += 9;
if (tl->track != 0xb2)
return tl;
(char *)tl += 9;
if (tl->track != 0xb3)
return tl;
(char *)tl += 9;
if (tl->track != 0xb4)
return tl;
(char *)tl += 9;
if (tl->track != 0xc0)
return tl;
(char *)tl += 9;
return tl;
}
static int
read_toc(unsigned unit)
{
struct scd_data *cd;
unsigned part = 0; /* For now ... */
struct sony_toc toc;
struct sony_tracklist *tl;
int rc, i, j;
u_long first, last;
cd = scd_data + unit;
rc = send_cmd(unit, CMD_GET_TOC, 1, part+1);
if (rc < 0)
return rc;
if (rc > sizeof(toc)) {
printf("scd%d: program error: toc too large (%d)\n", unit, rc);
return EIO;
}
if (get_result(unit, rc, (u_char *)&toc) != 0)
return EIO;
XDEBUG(1, ("scd%d: toc read. len = %d, sizeof(toc) = %d\n", unit, rc, sizeof(toc)));
tl = get_tl(&toc, rc);
first = msf2hsg(tl->start_msf);
last = msf2hsg(toc.lead_out_start_msf);
cd->blksize = SCDBLKSIZE;
cd->disksize = last*cd->blksize/DEV_BSIZE;
XDEBUG(1, ("scd%d: firstsector = %ld, lastsector = %ld", unit,
first, last));
cd->first_track = bcd2bin(toc.first_track);
cd->last_track = bcd2bin(toc.last_track);
if (cd->last_track > (MAX_TRACKS-2))
cd->last_track = MAX_TRACKS-2;
for (j = 0, i = cd->first_track; i <= cd->last_track; i++, j++) {
cd->toc[i].adr = tl[j].adr;
cd->toc[i].ctl = tl[j].ctl; /* for xcdplayer */
bcopy(tl[j].start_msf, cd->toc[i].start_msf, 3);
#ifdef SCD_DEBUG
if (scd_debuglevel > 0) {
if ((j % 3) == 0)
printf("\nscd%d: tracks ", unit);
printf("[%03d: %2d %2d %2d] ", i,
bcd2bin(cd->toc[i].start_msf[0]),
bcd2bin(cd->toc[i].start_msf[1]),
bcd2bin(cd->toc[i].start_msf[2]));
}
#endif
}
bcopy(toc.lead_out_start_msf, cd->toc[cd->last_track+1].start_msf, 3);
#ifdef SCD_DEBUG
if (scd_debuglevel > 0) {
i = cd->last_track+1;
printf("[END: %2d %2d %2d]\n",
bcd2bin(cd->toc[i].start_msf[0]),
bcd2bin(cd->toc[i].start_msf[1]),
bcd2bin(cd->toc[i].start_msf[2]));
}
#endif
bzero(&cd->dlabel,sizeof(struct disklabel));
/* filled with spaces first */
strncpy(cd->dlabel.d_typename," ",
sizeof(cd->dlabel.d_typename));
strncpy(cd->dlabel.d_typename, cd->name,
min(strlen(cd->name), sizeof(cd->dlabel.d_typename) - 1));
strncpy(cd->dlabel.d_packname,"unknown ",
sizeof(cd->dlabel.d_packname));
cd->dlabel.d_secsize = cd->blksize;
cd->dlabel.d_nsectors = 100;
cd->dlabel.d_ntracks = 1;
cd->dlabel.d_ncylinders = (cd->disksize/100)+1;
cd->dlabel.d_secpercyl = 100;
cd->dlabel.d_secperunit = cd->disksize;
cd->dlabel.d_rpm = 300;
cd->dlabel.d_interleave = 1;
cd->dlabel.d_flags = D_REMOVABLE;
cd->dlabel.d_npartitions= 1;
cd->dlabel.d_partitions[0].p_offset = 0;
cd->dlabel.d_partitions[0].p_size = cd->disksize;
cd->dlabel.d_partitions[0].p_fstype = 9;
cd->dlabel.d_magic = DISKMAGIC;
cd->dlabel.d_magic2 = DISKMAGIC;
cd->dlabel.d_checksum = dkcksum(&cd->dlabel);
cd->flags |= SCDTOC;
return 0;
}
static void
init_drive(unsigned unit)
{
int rc;
rc = send_cmd(unit, CMD_SET_DRIVE_PARAM, 2,
0x05, 0x03 | ((scd_data[unit].double_speed) ? 0x04: 0));
if (rc != 0)
printf("scd%d: Unable to set parameters. Errcode = 0x%x\n", unit, rc);
}
/* Returns 0 or errno */
static int
get_result(u_int unit, int result_len, u_char *result)
{
unsigned int port = scd_data[unit].iobase;
unsigned int res_reg = port + IREG_RESULT;
int loop_index = 2; /* send_cmd() reads two bytes ... */
XDEBUG(1, ("scd%d: DEBUG: get_result: bytes=%d\n", unit, result_len));
while (result_len-- > 0) {
if (loop_index++ >= 10) {
loop_index = 1;
if (waitfor_status_bits(unit, SBIT_RESULT_READY, 0))
return EIO;
write_control(port, CBIT_RESULT_READY_CLEAR);
}
if (result)
*result++ = inb(res_reg);
else
(void)inb(res_reg);
}
return 0;
}
/* Returns -0x100 for timeout, -(drive error code) OR number of result bytes */
static int
send_cmd(u_int unit, u_char cmd, u_int nargs, ...)
{
va_list ap;
u_int port = scd_data[unit].iobase;
u_int reg;
u_char c;
int rc;
int i;
if (waitfor_status_bits(unit, 0, SBIT_BUSY)) {
printf("scd%d: drive busy\n", unit);
return -0x100;
}
XDEBUG(1,("scd%d: DEBUG: send_cmd: cmd=0x%x nargs=%d", unit, cmd, nargs));
write_control(port, CBIT_RESULT_READY_CLEAR);
write_control(port, CBIT_RPARAM_CLEAR);
for (i = 0; i < 100; i++)
if (FSTATUS_BIT(port, FBIT_WPARAM_READY))
break;
if (!FSTATUS_BIT(port, FBIT_WPARAM_READY)) {
XDEBUG(1, ("\nscd%d: wparam timeout\n", unit));
return -EIO;
}
va_start(ap, nargs);
reg = port + OREG_WPARAMS;
for (i = 0; i < nargs; i++) {
c = (u_char)va_arg(ap, int);
outb(reg, c);
XDEBUG(1, (",{0x%x}", c));
}
va_end(ap);
XDEBUG(1, ("\n"));
outb(port+OREG_COMMAND, cmd);
rc = waitfor_status_bits(unit, SBIT_RESULT_READY, SBIT_BUSY);
if (rc)
return -0x100;
reg = port + IREG_RESULT;
write_control(port, CBIT_RESULT_READY_CLEAR);
switch ((rc = inb(reg)) & 0xf0) {
case 0x20:
rc = inb(reg);
/* FALL TROUGH */
case 0x50:
XDEBUG(1, ("scd%d: DEBUG: send_cmd: drive_error=0x%x\n", unit, rc));
return -rc;
case 0x00:
default:
rc = inb(reg);
XDEBUG(1, ("scd%d: DEBUG: send_cmd: result_len=%d\n", unit, rc));
return rc;
}
}
static void
print_error(int unit, int errcode)
{
switch (errcode) {
case -ERR_CD_NOT_LOADED:
printf("scd%d: door is open\n", unit);
break;
case -ERR_NO_CD_INSIDE:
printf("scd%d: no cd inside\n", unit);
break;
default:
if (errcode == -0x100 || errcode > 0)
printf("scd%d: device timeout\n", unit);
else
printf("scd%d: unexpected error 0x%x\n", unit, -errcode);
break;
}
}
/* Returns 0 or errno value */
static int
waitfor_status_bits(int unit, int bits_set, int bits_clear)
{
u_int port = scd_data[unit].iobase;
u_int flags = scd_data[unit].flags;
u_int reg = port + IREG_STATUS;
u_int max_loop;
u_char c = 0;
if (flags & SCDPROBING) {
max_loop = 0;
while (max_loop++ < 1000) {
c = inb(reg);
if (c == 0xff)
return EIO;
if (c & SBIT_ATTENTION) {
process_attention(unit);
continue;
}
if ((c & bits_set) == bits_set &&
(c & bits_clear) == 0)
{
break;
}
DELAY(10000);
}
} else {
max_loop = 100;
while (max_loop-- > 0) {
c = inb(reg);
if (c & SBIT_ATTENTION) {
process_attention(unit);
continue;
}
if ((c & bits_set) == bits_set &&
(c & bits_clear) == 0)
{
break;
}
tsleep(waitfor_status_bits, PZERO - 1, "waitfor", hz/10);
}
}
if ((c & bits_set) == bits_set &&
(c & bits_clear) == 0)
{
return 0;
}
#ifdef SCD_DEBUG
if (scd_debuglevel > 0)
printf("scd%d: DEBUG: waitfor: TIMEOUT (0x%x,(0x%x,0x%x))\n", unit, c, bits_set, bits_clear);
else
#endif
printf("scd%d: timeout.\n", unit);
return EIO;
}
/* these two routines for xcdplayer - "borrowed" from mcd.c */
static int
scd_toc_header (int unit, struct ioc_toc_header* th)
{
struct scd_data *cd = scd_data + unit;
int rc;
if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) {
print_error(unit, rc);
return EIO;
}
th->starting_track = cd->first_track;
th->ending_track = cd->last_track;
th->len = 0; /* not used */
return 0;
}
static int
scd_toc_entrys (int unit, struct ioc_read_toc_entry *te)
{
struct scd_data *cd = scd_data + unit;
struct cd_toc_entry toc_entry;
int rc, i, len = te->data_len;
if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) {
print_error(unit, rc);
return EIO;
}
/* find the toc to copy*/
i = te->starting_track;
if (i == SCD_LASTPLUS1)
i = cd->last_track + 1;
/* verify starting track */
if (i < cd->first_track || i > cd->last_track+1)
return EINVAL;
/* valid length ? */
if (len < sizeof(struct cd_toc_entry)
|| (len % sizeof(struct cd_toc_entry)) != 0)
return EINVAL;
/* copy the toc data */
toc_entry.control = cd->toc[i].ctl;
toc_entry.addr_type = te->address_format;
toc_entry.track = i;
if (te->address_format == CD_MSF_FORMAT) {
toc_entry.addr.msf.unused = 0;
toc_entry.addr.msf.minute = bcd2bin(cd->toc[i].start_msf[0]);
toc_entry.addr.msf.second = bcd2bin(cd->toc[i].start_msf[1]);
toc_entry.addr.msf.frame = bcd2bin(cd->toc[i].start_msf[2]);
}
/* copy the data back */
if (copyout(&toc_entry, te->data, sizeof(struct cd_toc_entry)) != 0)
return EFAULT;
return 0;
}
static int
scd_toc_entry (int unit, struct ioc_read_toc_single_entry *te)
{
struct scd_data *cd = scd_data + unit;
struct cd_toc_entry toc_entry;
int rc, i;
if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) {
print_error(unit, rc);
return EIO;
}
/* find the toc to copy*/
i = te->track;
if (i == SCD_LASTPLUS1)
i = cd->last_track + 1;
/* verify starting track */
if (i < cd->first_track || i > cd->last_track+1)
return EINVAL;
/* copy the toc data */
toc_entry.control = cd->toc[i].ctl;
toc_entry.addr_type = te->address_format;
toc_entry.track = i;
if (te->address_format == CD_MSF_FORMAT) {
toc_entry.addr.msf.unused = 0;
toc_entry.addr.msf.minute = bcd2bin(cd->toc[i].start_msf[0]);
toc_entry.addr.msf.second = bcd2bin(cd->toc[i].start_msf[1]);
toc_entry.addr.msf.frame = bcd2bin(cd->toc[i].start_msf[2]);
}
/* copy the data back */
bcopy(&toc_entry, &te->entry, sizeof(struct cd_toc_entry));
return 0;
}
#endif /* NSCD > 0 */
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