diff options
| -rw-r--r-- | sys/dev/mcd/mcd.c | 1261 | ||||
| -rw-r--r-- | sys/dev/mcd/mcdreg.h | 150 | ||||
| -rw-r--r-- | sys/i386/isa/mcd.c | 1261 | ||||
| -rw-r--r-- | sys/i386/isa/mcdreg.h | 150 |
4 files changed, 2822 insertions, 0 deletions
diff --git a/sys/dev/mcd/mcd.c b/sys/dev/mcd/mcd.c new file mode 100644 index 0000000..b301a48 --- /dev/null +++ b/sys/dev/mcd/mcd.c @@ -0,0 +1,1261 @@ +/* + * Copyright 1993 by Holger Veit (data part) + * Copyright 1993 by Brian Moore (audio part) + * 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 software was developed by Holger Veit and Brian Moore + * for use with "386BSD" and similar operating systems. + * "Similar operating systems" includes mainly non-profit oriented + * systems for research and education, including but not restricted to + * "NetBSD", "FreeBSD", "Mach" (by CMU). + * 4. Neither the name of the developer(s) nor the name "386BSD" + * may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER(S) ``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 DEVELOPER(S) 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. + * + * $Id$ + */ +/*static char rcsid[] = "from: /sys/i386/isa/RCS/mcd.c,v 2.1 1993/09/24 21:23:13 root Exp root";*/ +static char COPYRIGHT[] = "mcd-driver (C)1993 by H.Veit & B.Moore"; + +#include "mcd.h" +#if NMCD > 0 +#include "types.h" +#include "param.h" +#include "systm.h" +#include "conf.h" +#include "file.h" +#include "buf.h" +#include "stat.h" +#include "uio.h" +#include "ioctl.h" +#include "cdio.h" +#include "errno.h" +#include "dkbad.h" +#include "disklabel.h" +#include "i386/isa/isa.h" +#include "i386/isa/isa_device.h" +#include "mcdreg.h" + +/* user definable options */ +/*#define MCD_TO_WARNING_ON*/ /* define to get timeout messages */ +/*#define MCDMINI*/ /* define for a mini configuration for boot kernel */ + + +#ifdef MCDMINI +#define MCD_TRACE(fmt,a,b,c,d) +#ifdef MCD_TO_WARNING_ON +#undef MCD_TO_WARNING_ON +#endif +#else +#define MCD_TRACE(fmt,a,b,c,d) {if (mcd_data[unit].debug) {printf("mcd%d st=%02x: ",unit,mcd_data[unit].status); printf(fmt,a,b,c,d);}} +#endif + +#define mcd_part(dev) ((minor(dev)) & 7) +#define mcd_unit(dev) (((minor(dev)) & 0x38) >> 3) +#define mcd_phys(dev) (((minor(dev)) & 0x40) >> 6) +#define RAW_PART 3 + +/* flags */ +#define MCDOPEN 0x0001 /* device opened */ +#define MCDVALID 0x0002 /* parameters loaded */ +#define MCDINIT 0x0004 /* device is init'd */ +#define MCDWAIT 0x0008 /* waiting for something */ +#define MCDLABEL 0x0010 /* label is read */ +#define MCDPROBING 0x0020 /* probing */ +#define MCDREADRAW 0x0040 /* read raw mode (2352 bytes) */ +#define MCDVOLINFO 0x0080 /* already read volinfo */ +#define MCDTOC 0x0100 /* already read toc */ +#define MCDMBXBSY 0x0200 /* local mbx is busy */ + +/* status */ +#define MCDAUDIOBSY MCD_ST_AUDIOBSY /* playing audio */ +#define MCDDSKCHNG MCD_ST_DSKCHNG /* sensed change of disk */ +#define MCDDSKIN MCD_ST_DSKIN /* sensed disk in drive */ +#define MCDDOOROPEN MCD_ST_DOOROPEN /* sensed door open */ + +/* toc */ +#define MCD_MAXTOCS 104 /* from the Linux driver */ +#define MCD_LASTPLUS1 170 /* special toc entry */ + +struct mcd_mbx { + short unit; + short port; + short retry; + short nblk; + int sz; + u_long skip; + struct buf *bp; + int p_offset; + short count; +}; + +struct mcd_data { + short config; + short flags; + short status; + int blksize; + u_long disksize; + int iobase; + struct disklabel dlabel; + int partflags[MAXPARTITIONS]; + int openflags; + struct mcd_volinfo volinfo; +#ifndef MCDMINI + struct mcd_qchninfo toc[MCD_MAXTOCS]; + short audio_status; + struct mcd_read2 lastpb; +#endif + short debug; + struct buf head; /* head of buf queue */ + struct mcd_mbx mbx; +} mcd_data[NMCD]; + +/* reader state machine */ +#define MCD_S_BEGIN 0 +#define MCD_S_BEGIN1 1 +#define MCD_S_WAITSTAT 2 +#define MCD_S_WAITMODE 3 +#define MCD_S_WAITREAD 4 + +/* prototypes */ +int mcdopen(dev_t dev); +int mcdclose(dev_t dev); +int mcdstrategy(struct buf *bp); +int mcdioctl(dev_t dev, int cmd, caddr_t addr, int flags); +int mcdsize(dev_t dev); +static void mcd_done(struct mcd_mbx *mbx); +static void mcd_start(int unit); +static int mcd_getdisklabel(int unit); +static void mcd_configure(struct mcd_data *cd); +static int mcd_get(int unit, char *buf, int nmax); +static void mcd_setflags(int unit,struct mcd_data *cd); +static int mcd_getstat(int unit,int sflg); +static int mcd_send(int unit, int cmd,int nretrys); +static int bcd2bin(bcd_t b); +static bcd_t bin2bcd(int b); +static void hsg2msf(int hsg, bcd_t *msf); +static int msf2hsg(bcd_t *msf); +static int mcd_volinfo(int unit); +static int mcd_waitrdy(int port,int dly); +static void mcd_doread(int state, struct mcd_mbx *mbxin); +#ifndef MCDMINI +static int mcd_setmode(int unit, int mode); +static int mcd_getqchan(int unit, struct mcd_qchninfo *q); +static int mcd_subchan(int unit, struct ioc_read_subchannel *sc); +static int mcd_toc_header(int unit, struct ioc_toc_header *th); +static int mcd_read_toc(int unit); +static int mcd_toc_entry(int unit, struct ioc_read_toc_entry *te); +static int mcd_stop(int unit); +static int mcd_playtracks(int unit, struct ioc_play_track *pt); +static int mcd_play(int unit, struct mcd_read2 *pb); +static int mcd_pause(int unit); +static int mcd_resume(int unit); +#endif + +extern int hz; +extern int mcd_probe(struct isa_device *dev); +extern int mcd_attach(struct isa_device *dev); +struct isa_driver mcddriver = { mcd_probe, mcd_attach, "mcd" }; + +#define mcd_put(port,byte) outb(port,byte) + +#define MCD_RETRYS 5 +#define MCD_RDRETRYS 8 + +#define MCDBLK 2048 /* for cooked mode */ +#define MCDRBLK 2352 /* for raw mode */ + +/* several delays */ +#define RDELAY_WAITSTAT 300 +#define RDELAY_WAITMODE 300 +#define RDELAY_WAITREAD 800 + +#define DELAY_STATUS 10000l /* 10000 * 1us */ +#define DELAY_GETREPLY 200000l /* 200000 * 2us */ +#define DELAY_SEEKREAD 20000l /* 20000 * 1us */ +#define mcd_delay DELAY + +int mcd_attach(struct isa_device *dev) +{ + struct mcd_data *cd = mcd_data + dev->id_unit; + int i; + + cd->iobase = dev->id_iobase; + cd->flags |= MCDINIT; + cd->openflags = 0; + for (i=0; i<MAXPARTITIONS; i++) cd->partflags[i] = 0; + +#ifdef NOTYET + /* wire controller for interrupts and dma */ + mcd_configure(cd); +#endif + + return 1; +} + +int mcdopen(dev_t dev) +{ + int unit,part,phys; + struct mcd_data *cd; + + unit = mcd_unit(dev); + if (unit >= NMCD) + return ENXIO; + + cd = mcd_data + unit; + part = mcd_part(dev); + phys = mcd_phys(dev); + + /* not initialized*/ + if (!(cd->flags & MCDINIT)) + return ENXIO; + + /* invalidated in the meantime? mark all open part's invalid */ + if (!(cd->flags & MCDVALID) && cd->openflags) + return ENXIO; + + if (mcd_getstat(unit,1) < 0) + return ENXIO; + + /* XXX get a default disklabel */ + mcd_getdisklabel(unit); + + if (mcdsize(dev) < 0) { + printf("mcd%d: failed to get disk size\n",unit); + return ENXIO; + } else + cd->flags |= MCDVALID; + +MCD_TRACE("open: partition=%d, disksize = %d, blksize=%d\n", + part,cd->disksize,cd->blksize,0); + + if (part == RAW_PART || + (part < cd->dlabel.d_npartitions && + cd->dlabel.d_partitions[part].p_fstype != FS_UNUSED)) { + cd->partflags[part] |= MCDOPEN; + cd->openflags |= (1<<part); + if (part == RAW_PART && phys != 0) + cd->partflags[part] |= MCDREADRAW; + return 0; + } + + return ENXIO; +} + +int mcdclose(dev_t dev) +{ + int unit,part,phys; + struct mcd_data *cd; + + unit = mcd_unit(dev); + if (unit >= NMCD) + return ENXIO; + + cd = mcd_data + unit; + part = mcd_part(dev); + phys = mcd_phys(dev); + + if (!(cd->flags & MCDINIT)) + return ENXIO; + + mcd_getstat(unit,1); /* get status */ + + /* close channel */ + cd->partflags[part] &= ~(MCDOPEN|MCDREADRAW); + cd->openflags &= ~(1<<part); + MCD_TRACE("close: partition=%d\n",part,0,0,0); + + return 0; +} + +int mcdstrategy(struct buf *bp) +{ + struct mcd_data *cd; + struct buf *qp; + int s; + + int unit = mcd_unit(bp->b_dev); + + cd = mcd_data + unit; + + /* test validity */ +/*MCD_TRACE("strategy: buf=0x%lx, unit=%ld, block#=%ld bcount=%ld\n", + bp,unit,bp->b_blkno,bp->b_bcount);*/ + if (unit >= NMCD || bp->b_blkno < 0) { + printf("mcdstrategy: unit = %d, blkno = %d, bcount = %d\n", + unit, bp->b_blkno, bp->b_bcount); + pg("mcd: mcdstratregy failure"); + bp->b_error = EINVAL; + bp->b_flags |= B_ERROR; + goto bad; + } + + /* if device invalidated (e.g. media change, door open), error */ + if (!(cd->flags & MCDVALID)) { +MCD_TRACE("strategy: drive not valid\n",0,0,0,0); + 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; + + /* for non raw access, check partition limits */ + if (mcd_part(bp->b_dev) != RAW_PART) { + if (!(cd->flags & MCDLABEL)) { + bp->b_error = EIO; + goto bad; + } + /* adjust transfer if necessary */ + if (bounds_check_with_label(bp,&cd->dlabel,1) <= 0) { + goto done; + } + } + + /* queue it */ + qp = &cd->head; + s = splbio(); + disksort(qp,bp); + splx(s); + + /* now check whether we can perform processing */ + mcd_start(unit); + return; + +bad: + bp->b_flags |= B_ERROR; +done: + bp->b_resid = bp->b_bcount; + biodone(bp); + return; +} + +static void mcd_start(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + struct buf *bp, *qp = &cd->head; + struct partition *p; + int part; + register s = splbio(); + + if (cd->flags & MCDMBXBSY) + return; + + if ((bp = qp->b_actf) != 0) { + /* block found to process, dequeue */ + /*MCD_TRACE("mcd_start: found block bp=0x%x\n",bp,0,0,0);*/ + qp->b_actf = bp->av_forw; + splx(s); + } else { + /* nothing to do */ + splx(s); + return; + } + + /* changed media? */ + if (!(cd->flags & MCDVALID)) { + MCD_TRACE("mcd_start: drive not valid\n",0,0,0,0); + return; + } + + p = cd->dlabel.d_partitions + mcd_part(bp->b_dev); + + cd->flags |= MCDMBXBSY; + cd->mbx.unit = unit; + cd->mbx.port = cd->iobase; + cd->mbx.retry = MCD_RETRYS; + cd->mbx.bp = bp; + cd->mbx.p_offset = p->p_offset; + + /* calling the read routine */ + mcd_doread(MCD_S_BEGIN,&(cd->mbx)); + /* triggers mcd_start, when successful finished */ + return; +} + +int mcdioctl(dev_t dev, int cmd, caddr_t addr, int flags) +{ + struct mcd_data *cd; + int unit,part; + + unit = mcd_unit(dev); + part = mcd_part(dev); + cd = mcd_data + unit; + +#ifdef MCDMINI + return ENOTTY; +#else + if (!(cd->flags & MCDVALID)) + return EIO; +MCD_TRACE("ioctl called 0x%x\n",cmd,0,0,0); + + switch (cmd) { + case DIOCSBAD: + return EINVAL; + case DIOCGDINFO: + case DIOCGPART: + case DIOCWDINFO: + case DIOCSDINFO: + case DIOCWLABEL: + return ENOTTY; + case CDIOCPLAYTRACKS: + return mcd_playtracks(unit, (struct ioc_play_track *) addr); + case CDIOCPLAYBLOCKS: + return mcd_play(unit, (struct mcd_read2 *) addr); + case CDIOCREADSUBCHANNEL: + return mcd_subchan(unit, (struct ioc_read_subchannel *) addr); + case CDIOREADTOCHEADER: + return mcd_toc_header(unit, (struct ioc_toc_header *) addr); + case CDIOREADTOCENTRYS: + return mcd_toc_entry(unit, (struct ioc_read_toc_entry *) addr); + case CDIOCSETPATCH: + case CDIOCGETVOL: + case CDIOCSETVOL: + case CDIOCSETMONO: + case CDIOCSETSTERIO: + case CDIOCSETMUTE: + case CDIOCSETLEFT: + case CDIOCSETRIGHT: + return EINVAL; + case CDIOCRESUME: + return mcd_resume(unit); + case CDIOCPAUSE: + return mcd_pause(unit); + case CDIOCSTART: + return EINVAL; + case CDIOCSTOP: + return mcd_stop(unit); + case CDIOCEJECT: + return EINVAL; + case CDIOCSETDEBUG: + cd->debug = 1; + return 0; + case CDIOCCLRDEBUG: + cd->debug = 0; + return 0; + case CDIOCRESET: + return EINVAL; + default: + return ENOTTY; + } + /*NOTREACHED*/ +#endif /*!MCDMINI*/ +} + +/* this could have been taken from scsi/cd.c, but it is not clear + * whether the scsi cd driver is linked in + */ +static int mcd_getdisklabel(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + + if (cd->flags & MCDLABEL) + return -1; + + bzero(&cd->dlabel,sizeof(struct disklabel)); + strncpy(cd->dlabel.d_typename,"Mitsumi CD ROM ",16); + strncpy(cd->dlabel.d_packname,"unknown ",16); + 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 |= MCDLABEL; + return 0; +} + +int mcdsize(dev_t dev) +{ + int size; + int unit = mcd_unit(dev); + struct mcd_data *cd = mcd_data + unit; + + if (mcd_volinfo(unit) >= 0) { + cd->blksize = MCDBLK; + size = msf2hsg(cd->volinfo.vol_msf); + cd->disksize = size * (MCDBLK/DEV_BSIZE); + return 0; + } + return -1; +} + +/*************************************************************** + * lower level of driver starts here + **************************************************************/ + +#ifdef NOTDEF +static char irqs[] = { + 0x00,0x00,0x10,0x20,0x00,0x30,0x00,0x00, + 0x00,0x10,0x40,0x50,0x00,0x00,0x00,0x00 +}; + +static char drqs[] = { + 0x00,0x01,0x00,0x03,0x00,0x05,0x06,0x07, +}; +#endif + +static void mcd_configure(struct mcd_data *cd) +{ + outb(cd->iobase+mcd_config,cd->config); +} + +/* check if there is a cdrom */ +/* Heavly hacked by gclarkii@sugar.neosoft.com */ + +int mcd_probe(struct isa_device *dev) +{ + int port = dev->id_iobase; + int unit = dev->id_unit; + int i; + int st; + int check; + int junk; + + mcd_data[unit].flags = MCDPROBING; + +#ifdef NOTDEF + /* get irq/drq configuration word */ + mcd_data[unit].config = irqs[dev->id_irq]; /* | drqs[dev->id_drq];*/ +#else + mcd_data[unit].config = 0; +#endif + + /* send a reset */ + outb(port+MCD_FLAGS,0); + DELAY(100000); + /* get any pending status and throw away...*/ + for (i=10; i != 0; i--) { + inb(port+MCD_DATA); + } + DELAY(1000); + + outb(port+MCD_DATA,MCD_CMDGETSTAT); /* Send get status command */ + + /* Loop looking for avail of status */ + /* XXX May have to increase for fast machinces */ + for (i = 1000; i != 0; i--) { + if ((inb(port+MCD_FLAGS) & 0xF ) == STATUS_AVAIL) { + break; + } + DELAY(10); + } + /* get status */ + + if (i == 0) { +#ifdef DEBUG + printf ("Mitsumi drive NOT detected\n"); +#endif + return 0; + } + +/* + * The following code uses the 0xDC command, it returns a M from the + * second byte and a number in the third. Does anyone know what the + * number is for? Better yet, how about someone thats REAL good in + * i80x86 asm looking at the Dos driver... Most of this info came + * from a friend of mine spending a whole weekend..... + */ + + DELAY (2000); + outb(port+MCD_DATA,MCD_CMDCONTINFO); + for (i = 0; i < 100000; i++) { + if ((inb(port+MCD_FLAGS) & 0xF) == STATUS_AVAIL) + break; + } + if (i > 100000) { +#ifdef DEBUG + printf ("Mitsumi drive error\n"); +#endif + return 0; + } + DELAY (40000); + st = inb(port+MCD_DATA); + DELAY (500); + check = inb(port+MCD_DATA); + DELAY (500); + junk = inb(port+MCD_DATA); /* What is byte used for?!?!? */ + + if (check = 'M') { +#ifdef DEBUG + printf("Mitsumi drive detected\n"); +#endif + return 4; + } else { + printf("Mitsumi drive NOT detected\n"); + printf("Mitsumi drive error\n"); + return 0; + } +} + +static int mcd_waitrdy(int port,int dly) +{ + int i; + + /* wait until xfer port senses data ready */ + for (i=0; i<dly; i++) { + if ((inb(port+mcd_xfer) & MCD_ST_BUSY)==0) + return 0; + mcd_delay(1); + } + return -1; +} + +static int mcd_getreply(int unit,int dly) +{ + int i; + struct mcd_data *cd = mcd_data + unit; + int port = cd->iobase; + + /* wait data to become ready */ + if (mcd_waitrdy(port,dly)<0) { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: timeout getreply\n",unit); +#endif + return -1; + } + + /* get the data */ + return inb(port+mcd_status) & 0xFF; +} + +static int mcd_getstat(int unit,int sflg) +{ + int i; + struct mcd_data *cd = mcd_data + unit; + int port = cd->iobase; + + /* get the status */ + if (sflg) + outb(port+mcd_command, MCD_CMDGETSTAT); + i = mcd_getreply(unit,DELAY_GETREPLY); + if (i<0) return -1; + + cd->status = i; + + mcd_setflags(unit,cd); + return cd->status; +} + +static void mcd_setflags(int unit, struct mcd_data *cd) +{ + /* check flags */ + if (cd->status & (MCDDSKCHNG|MCDDOOROPEN)) { + MCD_TRACE("getstat: sensed DSKCHNG or DOOROPEN\n",0,0,0,0); + cd->flags &= ~MCDVALID; + } + +#ifndef MCDMINI + if (cd->status & MCDAUDIOBSY) + cd->audio_status = CD_AS_PLAY_IN_PROGRESS; + else if (cd->audio_status == CD_AS_PLAY_IN_PROGRESS) + cd->audio_status = CD_AS_PLAY_COMPLETED; +#endif +} + +static int mcd_get(int unit, char *buf, int nmax) +{ + int port = mcd_data[unit].iobase; + int i,k; + + for (i=0; i<nmax; i++) { + + /* wait for data */ + if ((k = mcd_getreply(unit,DELAY_GETREPLY)) < 0) { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: timeout mcd_get\n",unit); +#endif + return -1; + } + buf[i] = k; + } + return i; +} + +static int mcd_send(int unit, int cmd,int nretrys) +{ + int i,k; + int port = mcd_data[unit].iobase; + +/*MCD_TRACE("mcd_send: command = 0x%x\n",cmd,0,0,0);*/ + for (i=0; i<nretrys; i++) { + outb(port+mcd_command, cmd); + if ((k=mcd_getstat(unit,0)) != -1) + break; + } + if (i == nretrys) { + printf("mcd%d: mcd_send retry cnt exceeded\n",unit); + return -1; + } +/*MCD_TRACE("mcd_send: status = 0x%x\n",k,0,0,0);*/ + return 0; +} + +static int bcd2bin(bcd_t b) +{ + return (b >> 4) * 10 + (b & 15); +} + +static bcd_t bin2bcd(int b) +{ + return ((b / 10) << 4) | (b % 10); +} + +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 int mcd_volinfo(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + int i; + +/*MCD_TRACE("mcd_volinfo: enter\n",0,0,0,0);*/ + + /* Get the status, in case the disc has been changed */ + if (mcd_getstat(unit, 1) < 0) return EIO; + + /* Just return if we already have it */ + if (cd->flags & MCDVOLINFO) return 0; + + /* send volume info command */ + if (mcd_send(unit,MCD_CMDGETVOLINFO,MCD_RETRYS) < 0) + return -1; + + /* get data */ + if (mcd_get(unit,(char*) &cd->volinfo,sizeof(struct mcd_volinfo)) < 0) { + printf("mcd%d: mcd_volinfo: error read data\n",unit); + return -1; + } + + if (cd->volinfo.trk_low != 0 || cd->volinfo.trk_high != 0) { + cd->flags |= MCDVOLINFO; /* volinfo is OK */ + return 0; + } + + return -1; +} + +int mcdintr(unit) +{ + int port = mcd_data[unit].iobase; + u_int i; + + MCD_TRACE("stray interrupt xfer=0x%x\n",inb(port+mcd_xfer),0,0,0); + + /* just read out status and ignore the rest */ + if ((inb(port+mcd_xfer)&0xFF) != 0xFF) { + i = inb(port+mcd_status); + } +} + +/* state machine to process read requests + * initialize with MCD_S_BEGIN: calculate sizes, and read status + * MCD_S_WAITSTAT: wait for status reply, set mode + * MCD_S_WAITMODE: waits for status reply from set mode, set read command + * MCD_S_WAITREAD: wait for read ready, read data + */ +static struct mcd_mbx *mbxsave; + +static void mcd_doread(int state, struct mcd_mbx *mbxin) +{ + struct mcd_mbx *mbx = (state!=MCD_S_BEGIN) ? mbxsave : mbxin; + int unit = mbx->unit; + int port = mbx->port; + struct buf *bp = mbx->bp; + struct mcd_data *cd = mcd_data + unit; + + int rm,i,k; + struct mcd_read2 rbuf; + int blknum; + caddr_t addr; + +loop: + switch (state) { + case MCD_S_BEGIN: + mbx = mbxsave = mbxin; + + case MCD_S_BEGIN1: + /* get status */ + outb(port+mcd_command, MCD_CMDGETSTAT); + mbx->count = RDELAY_WAITSTAT; + timeout(mcd_doread,MCD_S_WAITSTAT,hz/100); + return; + case MCD_S_WAITSTAT: + untimeout(mcd_doread,MCD_S_WAITSTAT); + if (mbx->count-- >= 0) { + if (inb(port+mcd_xfer) & MCD_ST_BUSY) { + timeout(mcd_doread,MCD_S_WAITSTAT,hz/100); + return; + } + mcd_setflags(unit,cd); + MCD_TRACE("got WAITSTAT delay=%d\n",RDELAY_WAITSTAT-mbx->count,0,0,0); + /* reject, if audio active */ + if (cd->status & MCDAUDIOBSY) { + printf("mcd%d: audio is active\n",unit); + goto readerr; + } + + /* to check for raw/cooked mode */ + if (cd->flags & MCDREADRAW) { + rm = MCD_MD_RAW; + mbx->sz = MCDRBLK; + } else { + rm = MCD_MD_COOKED; + mbx->sz = cd->blksize; + } + + mbx->count = RDELAY_WAITMODE; + + mcd_put(port+mcd_command, MCD_CMDSETMODE); + mcd_put(port+mcd_command, rm); + timeout(mcd_doread,MCD_S_WAITMODE,hz/100); + return; + } else { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: timeout getstatus\n",unit); +#endif + goto readerr; + } + + case MCD_S_WAITMODE: + untimeout(mcd_doread,MCD_S_WAITMODE); + if (mbx->count-- < 0) { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: timeout set mode\n",unit); +#endif + goto readerr; + } + if (inb(port+mcd_xfer) & MCD_ST_BUSY) { + timeout(mcd_doread,MCD_S_WAITMODE,hz/100); + return; + } + mcd_setflags(unit,cd); + MCD_TRACE("got WAITMODE delay=%d\n",RDELAY_WAITMODE-mbx->count,0,0,0); + /* for first block */ + mbx->nblk = (bp->b_bcount + (mbx->sz-1)) / mbx->sz; + mbx->skip = 0; + +nextblock: + blknum = (bp->b_blkno / (mbx->sz/DEV_BSIZE)) + + mbx->p_offset + mbx->skip/mbx->sz; + + MCD_TRACE("mcd_doread: read blknum=%d for bp=0x%x\n",blknum,bp,0,0); + + /* build parameter block */ + hsg2msf(blknum,rbuf.start_msf); + + /* send the read command */ + mcd_put(port+mcd_command,MCD_CMDREAD2); + mcd_put(port+mcd_command,rbuf.start_msf[0]); + mcd_put(port+mcd_command,rbuf.start_msf[1]); + mcd_put(port+mcd_command,rbuf.start_msf[2]); + mcd_put(port+mcd_command,0); + mcd_put(port+mcd_command,0); + mcd_put(port+mcd_command,1); + mbx->count = RDELAY_WAITREAD; + timeout(mcd_doread,MCD_S_WAITREAD,hz/100); + return; + case MCD_S_WAITREAD: + untimeout(mcd_doread,MCD_S_WAITREAD); + if (mbx->count-- > 0) { + k = inb(port+mcd_xfer); + if ((k & 2)==0) { + MCD_TRACE("got data delay=%d\n",RDELAY_WAITREAD-mbx->count,0,0,0); + /* data is ready */ + addr = bp->b_un.b_addr + mbx->skip; + outb(port+mcd_ctl2,0x04); /* XXX */ + for (i=0; i<mbx->sz; i++) + *addr++ = inb(port+mcd_rdata); + outb(port+mcd_ctl2,0x0c); /* XXX */ + + if (--mbx->nblk > 0) { + mbx->skip += mbx->sz; + goto nextblock; + } + + /* return buffer */ + bp->b_resid = 0; + biodone(bp); + + cd->flags &= ~MCDMBXBSY; + mcd_start(mbx->unit); + return; + } + if ((k & 4)==0) + mcd_getstat(unit,0); + timeout(mcd_doread,MCD_S_WAITREAD,hz/100); + return; + } else { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: timeout read data\n",unit); +#endif + goto readerr; + } + } + +readerr: + if (mbx->retry-- > 0) { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: retrying\n",unit); +#endif + state = MCD_S_BEGIN1; + goto loop; + } + + /* invalidate the buffer */ + bp->b_flags |= B_ERROR; + bp->b_resid = bp->b_bcount; + biodone(bp); + mcd_start(mbx->unit); + return; + +#ifdef NOTDEF + printf("mcd%d: unit timeout, resetting\n",mbx->unit); + outb(mbx->port+mcd_reset,MCD_CMDRESET); + DELAY(300000); + (void)mcd_getstat(mbx->unit,1); + (void)mcd_getstat(mbx->unit,1); + /*cd->status &= ~MCDDSKCHNG; */ + cd->debug = 1; /* preventive set debug mode */ + +#endif + +} + +#ifndef MCDMINI +static int mcd_setmode(int unit, int mode) +{ + struct mcd_data *cd = mcd_data + unit; + int port = cd->iobase; + int retry; + + printf("mcd%d: setting mode to %d\n", unit, mode); + for(retry=0; retry<MCD_RETRYS; retry++) + { + outb(port+mcd_command, MCD_CMDSETMODE); + outb(port+mcd_command, mode); + if (mcd_getstat(unit, 0) != -1) return 0; + } + + return -1; +} + +static int mcd_toc_header(int unit, struct ioc_toc_header *th) +{ + struct mcd_data *cd = mcd_data + unit; + + if (mcd_volinfo(unit) < 0) + return ENXIO; + + th->len = msf2hsg(cd->volinfo.vol_msf); + th->starting_track = bcd2bin(cd->volinfo.trk_low); + th->ending_track = bcd2bin(cd->volinfo.trk_high); + + return 0; +} + +static int mcd_read_toc(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + struct ioc_toc_header th; + struct mcd_qchninfo q; + int rc, trk, idx, retry; + + /* Only read TOC if needed */ + if (cd->flags & MCDTOC) return 0; + + printf("mcd%d: reading toc header\n", unit); + if (mcd_toc_header(unit, &th) != 0) + return ENXIO; + + printf("mcd%d: stopping play\n", unit); + if ((rc=mcd_stop(unit)) != 0) + return rc; + + /* try setting the mode twice */ + if (mcd_setmode(unit, MCD_MD_TOC) != 0) + return EIO; + if (mcd_setmode(unit, MCD_MD_TOC) != 0) + return EIO; + + printf("mcd%d: get_toc reading qchannel info\n",unit); + for(trk=th.starting_track; trk<=th.ending_track; trk++) + cd->toc[trk].idx_no = 0; + trk = th.ending_track - th.starting_track + 1; + for(retry=0; retry<300 && trk>0; retry++) + { + if (mcd_getqchan(unit, &q) < 0) break; + idx = bcd2bin(q.idx_no); + if (idx>0 && idx < MCD_MAXTOCS && q.trk_no==0) + if (cd->toc[idx].idx_no == 0) + { + cd->toc[idx] = q; + trk--; + } + } + + if (mcd_setmode(unit, MCD_MD_COOKED) != 0) + return EIO; + + if (trk != 0) return ENXIO; + + /* add a fake last+1 */ + idx = th.ending_track + 1; + cd->toc[idx].ctrl_adr = cd->toc[idx-1].ctrl_adr; + cd->toc[idx].trk_no = 0; + cd->toc[idx].idx_no = 0xAA; + cd->toc[idx].hd_pos_msf[0] = cd->volinfo.vol_msf[0]; + cd->toc[idx].hd_pos_msf[1] = cd->volinfo.vol_msf[1]; + cd->toc[idx].hd_pos_msf[2] = cd->volinfo.vol_msf[2]; + + cd->flags |= MCDTOC; + + return 0; +} + +static int mcd_toc_entry(int unit, struct ioc_read_toc_entry *te) +{ + struct mcd_data *cd = mcd_data + unit; + struct ret_toc + { + struct ioc_toc_header th; + struct cd_toc_entry rt; + } ret_toc; + struct ioc_toc_header th; + int rc, i; + + /* Make sure we have a valid toc */ + if ((rc=mcd_read_toc(unit)) != 0) + return rc; + + /* find the toc to copy*/ + i = te->starting_track; + if (i == MCD_LASTPLUS1) + i = bcd2bin(cd->volinfo.trk_high) + 1; + + /* verify starting track */ + if (i < bcd2bin(cd->volinfo.trk_low) || + i > bcd2bin(cd->volinfo.trk_high)+1) + return EINVAL; + + /* do we have room */ + if (te->data_len < sizeof(struct ioc_toc_header) + + sizeof(struct cd_toc_entry)) return EINVAL; + + /* Copy the toc header */ + if (mcd_toc_header(unit, &th) < 0) return EIO; + ret_toc.th = th; + + /* copy the toc data */ + ret_toc.rt.control = cd->toc[i].ctrl_adr; + ret_toc.rt.addr_type = te->address_format; + ret_toc.rt.track = i; + if (te->address_format == CD_MSF_FORMAT) + { + ret_toc.rt.addr[1] = cd->toc[i].hd_pos_msf[0]; + ret_toc.rt.addr[2] = cd->toc[i].hd_pos_msf[1]; + ret_toc.rt.addr[3] = cd->toc[i].hd_pos_msf[2]; + } + + /* copy the data back */ + copyout(&ret_toc, te->data, sizeof(struct cd_toc_entry) + + sizeof(struct ioc_toc_header)); + + return 0; +} + +static int mcd_stop(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + + if (mcd_send(unit, MCD_CMDSTOPAUDIO, MCD_RETRYS) < 0) + return ENXIO; + cd->audio_status = CD_AS_PLAY_COMPLETED; + return 0; +} + +static int mcd_getqchan(int unit, struct mcd_qchninfo *q) +{ + struct mcd_data *cd = mcd_data + unit; + + if (mcd_send(unit, MCD_CMDGETQCHN, MCD_RETRYS) < 0) + return -1; + if (mcd_get(unit, (char *) q, sizeof(struct mcd_qchninfo)) < 0) + return -1; + if (cd->debug) + printf("mcd%d: qchannel ctl=%d, t=%d, i=%d, ttm=%d:%d.%d dtm=%d:%d.%d\n", + unit, + q->ctrl_adr, q->trk_no, q->idx_no, + q->trk_size_msf[0], q->trk_size_msf[1], q->trk_size_msf[2], + q->trk_size_msf[0], q->trk_size_msf[1], q->trk_size_msf[2]); + return 0; +} + +static int mcd_subchan(int unit, struct ioc_read_subchannel *sc) +{ + struct mcd_data *cd = mcd_data + unit; + struct mcd_qchninfo q; + struct cd_sub_channel_info data; + + printf("mcd%d: subchan af=%d, df=%d\n", unit, + sc->address_format, + sc->data_format); + if (sc->address_format != CD_MSF_FORMAT) return EIO; + if (sc->data_format != CD_CURRENT_POSITION) return EIO; + + if (mcd_getqchan(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.trk_no); + + if (copyout(&data, sc->data, sizeof(struct cd_sub_channel_info))!=0) + return EFAULT; + return 0; +} + +static int mcd_playtracks(int unit, struct ioc_play_track *pt) +{ + struct mcd_data *cd = mcd_data + unit; + struct mcd_read2 pb; + int a = pt->start_track; + int z = pt->end_track; + int rc; + + if ((rc = mcd_read_toc(unit)) != 0) return rc; + + printf("mcd%d: playtracks from %d:%d to %d:%d\n", unit, + a, pt->start_index, z, pt->end_index); + + if (a < cd->volinfo.trk_low || a > cd->volinfo.trk_high || a > z || + z < cd->volinfo.trk_low || z > cd->volinfo.trk_high) + return EINVAL; + + pb.start_msf[0] = cd->toc[a].hd_pos_msf[0]; + pb.start_msf[1] = cd->toc[a].hd_pos_msf[1]; + pb.start_msf[2] = cd->toc[a].hd_pos_msf[2]; + pb.end_msf[0] = cd->toc[z+1].hd_pos_msf[0]; + pb.end_msf[1] = cd->toc[z+1].hd_pos_msf[1]; + pb.end_msf[2] = cd->toc[z+1].hd_pos_msf[2]; + + return mcd_play(unit, &pb); +} + +static int mcd_play(int unit, struct mcd_read2 *pb) +{ + struct mcd_data *cd = mcd_data + unit; + int port = cd->iobase; + int retry, st; + + cd->lastpb = *pb; + for(retry=0; retry<MCD_RETRYS; retry++) + { + outb(port+mcd_command, MCD_CMDREAD2); + outb(port+mcd_command, pb->start_msf[0]); + outb(port+mcd_command, pb->start_msf[1]); + outb(port+mcd_command, pb->start_msf[2]); + outb(port+mcd_command, pb->end_msf[0]); + outb(port+mcd_command, pb->end_msf[1]); + outb(port+mcd_command, pb->end_msf[2]); + if ((st=mcd_getstat(unit, 0)) != -1) break; + } + + if (cd->debug) + printf("mcd%d: mcd_play retry=%d, status=%d\n", unit, retry, st); + if (st == -1) return ENXIO; + cd->audio_status = CD_AS_PLAY_IN_PROGRESS; + return 0; +} + +static int mcd_pause(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + struct mcd_qchninfo q; + int rc; + + /* Verify current status */ + if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS) + { + printf("mcd%d: pause attempted when not playing\n", unit); + return EINVAL; + } + + /* Get the current position */ + if (mcd_getqchan(unit, &q) < 0) return EIO; + + /* Copy it into lastpb */ + cd->lastpb.start_msf[0] = q.hd_pos_msf[0]; + cd->lastpb.start_msf[1] = q.hd_pos_msf[1]; + cd->lastpb.start_msf[2] = q.hd_pos_msf[2]; + + /* Stop playing */ + if ((rc=mcd_stop(unit)) != 0) return rc; + + /* Set the proper status and exit */ + cd->audio_status = CD_AS_PLAY_PAUSED; + return 0; +} + +static int mcd_resume(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + + if (cd->audio_status != CD_AS_PLAY_PAUSED) return EINVAL; + return mcd_play(unit, &cd->lastpb); +} +#endif /*!MCDMINI*/ + +#endif /* NMCD > 0 */ diff --git a/sys/dev/mcd/mcdreg.h b/sys/dev/mcd/mcdreg.h new file mode 100644 index 0000000..83664a7 --- /dev/null +++ b/sys/dev/mcd/mcdreg.h @@ -0,0 +1,150 @@ +/* + * Copyright 1993 by Holger Veit (data part) + * Copyright 1993 by Brian Moore (audio part) + * 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 software was developed by Holger Veit and Brian Moore + * for use with "386BSD" and similar operating systems. + * "Similar operating systems" includes mainly non-profit oriented + * systems for research and education, including but not restricted to + * "NetBSD", "FreeBSD", "Mach" (by CMU). + * 4. Neither the name of the developer(s) nor the name "386BSD" + * may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER(S) ``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 DEVELOPER(S) 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. + * + * This file contains definitions for some cdrom control commands + * and status codes. This info was "inherited" from the DOS MTMCDE.SYS + * driver, and is thus not complete (and may even be wrong). Some day + * the manufacturer or anyone else might provide better documentation, + * so this file (and the driver) will then have a better quality. + * + * $Id$ + */ + +#ifndef MCD_H +#define MCD_H + +#ifdef __GNUC__ +#if __GNUC__ >= 2 +#pragma pack(1) +#endif +#endif + +typedef unsigned char bcd_t; +#define M_msf(msf) msf[0] +#define S_msf(msf) msf[1] +#define F_msf(msf) msf[2] + +/* io lines used */ +#define MCD_IO_BASE 0x300 + +#define mcd_command 0 +#define mcd_status 0 +#define mcd_rdata 0 + +#define mcd_reset 1 +#define mcd_xfer 1 +#define mcd_ctl2 2 /* XXX Is this right? */ + +#define mcd_config 3 +#define MCD_MASK_DMA 0x07 /* bits 2-0 = DMA channel */ +#define MCD_MASK_IRQ 0x70 /* bits 6-4 = INT number */ + /* 001 = int 2,9 */ + /* 010 = int 3 */ + /* 011 = int 5 */ + /* 100 = int 10 */ + /* 101 = int 11 */ +/* flags */ +#define STATUS_AVAIL 0xb +#define DATA_AVAIL 0xf + +/* ports */ +#define MCD_DATA 0 +#define MCD_FLAGS 1 +#define MCD_DONT_KNOW 2 /* What are these two ports for??? */ +#define CHANNEL 3 + +/* Status bits */ +#define MCD_ST_DOOROPEN 0x80 +#define MCD_ST_DSKIN 0x40 +#define MCD_ST_DSKCHNG 0x20 +#define MCD_ST_BUSY 0x04 +#define MCD_ST_AUDIOBSY 0x02 + +/* commands known by the controller */ +#define MCD_CMDRESET 0x00 +#define MCD_CMDGETVOLINFO 0x10 /* gets mcd_volinfo */ +#define MCD_CMDGETQCHN 0x20 /* gets mcd_qchninfo */ +#define MCD_CMDGETSTAT 0x40 /* gets a byte of status */ +#define MCD_CMDSETMODE 0x50 /* set transmission mode, needs byte */ +#define MCD_MD_RAW 0x60 +#define MCD_MD_COOKED 0x01 +#define MCD_MD_TOC 0x05 +#define MCD_CMDSTOPAUDIO 0x70 +#define MCD_CMDGETVOLUME 0x8E /* gets mcd_volume */ +#define MCD_CMDSETVOLUME 0xAE /* sets mcd_volume */ +#define MCD_CMDREAD1 0xB0 /* read n sectors */ +#define MCD_CMDREAD2 0xC0 /* read from-to */ +#define MCD_CMDCONTINFO 0xDC /* Get controller info */ +#define MCD_CMDEJECTDISK 0xF6 +#define MCD_CMDCLOSETRAY 0xF8 +#define MCD_CMDLOCKDRV 0xFE /* needs byte */ +#define MCD_LK_UNLOCK 0x00 +#define MCD_LK_LOCK 0x01 +#define MCD_LK_TEST 0x02 + +struct mcd_volinfo { + bcd_t trk_low; + bcd_t trk_high; + bcd_t vol_msf[3]; + bcd_t trk1_msf[3]; +}; + +struct mcd_qchninfo { + u_char ctrl_adr; + u_char trk_no; + u_char idx_no; + bcd_t trk_size_msf[3]; + u_char :8; + bcd_t hd_pos_msf[3]; +}; + +struct mcd_volume { + u_char v0l; + u_char v0rs; + u_char v0r; + u_char v0ls; +}; + +struct mcd_read1 { + bcd_t start_msf[3]; + u_char nsec[3]; +}; + +struct mcd_read2 { + bcd_t start_msf[3]; + bcd_t end_msf[3]; +}; +#endif /* MCD_H */ diff --git a/sys/i386/isa/mcd.c b/sys/i386/isa/mcd.c new file mode 100644 index 0000000..b301a48 --- /dev/null +++ b/sys/i386/isa/mcd.c @@ -0,0 +1,1261 @@ +/* + * Copyright 1993 by Holger Veit (data part) + * Copyright 1993 by Brian Moore (audio part) + * 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 software was developed by Holger Veit and Brian Moore + * for use with "386BSD" and similar operating systems. + * "Similar operating systems" includes mainly non-profit oriented + * systems for research and education, including but not restricted to + * "NetBSD", "FreeBSD", "Mach" (by CMU). + * 4. Neither the name of the developer(s) nor the name "386BSD" + * may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER(S) ``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 DEVELOPER(S) 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. + * + * $Id$ + */ +/*static char rcsid[] = "from: /sys/i386/isa/RCS/mcd.c,v 2.1 1993/09/24 21:23:13 root Exp root";*/ +static char COPYRIGHT[] = "mcd-driver (C)1993 by H.Veit & B.Moore"; + +#include "mcd.h" +#if NMCD > 0 +#include "types.h" +#include "param.h" +#include "systm.h" +#include "conf.h" +#include "file.h" +#include "buf.h" +#include "stat.h" +#include "uio.h" +#include "ioctl.h" +#include "cdio.h" +#include "errno.h" +#include "dkbad.h" +#include "disklabel.h" +#include "i386/isa/isa.h" +#include "i386/isa/isa_device.h" +#include "mcdreg.h" + +/* user definable options */ +/*#define MCD_TO_WARNING_ON*/ /* define to get timeout messages */ +/*#define MCDMINI*/ /* define for a mini configuration for boot kernel */ + + +#ifdef MCDMINI +#define MCD_TRACE(fmt,a,b,c,d) +#ifdef MCD_TO_WARNING_ON +#undef MCD_TO_WARNING_ON +#endif +#else +#define MCD_TRACE(fmt,a,b,c,d) {if (mcd_data[unit].debug) {printf("mcd%d st=%02x: ",unit,mcd_data[unit].status); printf(fmt,a,b,c,d);}} +#endif + +#define mcd_part(dev) ((minor(dev)) & 7) +#define mcd_unit(dev) (((minor(dev)) & 0x38) >> 3) +#define mcd_phys(dev) (((minor(dev)) & 0x40) >> 6) +#define RAW_PART 3 + +/* flags */ +#define MCDOPEN 0x0001 /* device opened */ +#define MCDVALID 0x0002 /* parameters loaded */ +#define MCDINIT 0x0004 /* device is init'd */ +#define MCDWAIT 0x0008 /* waiting for something */ +#define MCDLABEL 0x0010 /* label is read */ +#define MCDPROBING 0x0020 /* probing */ +#define MCDREADRAW 0x0040 /* read raw mode (2352 bytes) */ +#define MCDVOLINFO 0x0080 /* already read volinfo */ +#define MCDTOC 0x0100 /* already read toc */ +#define MCDMBXBSY 0x0200 /* local mbx is busy */ + +/* status */ +#define MCDAUDIOBSY MCD_ST_AUDIOBSY /* playing audio */ +#define MCDDSKCHNG MCD_ST_DSKCHNG /* sensed change of disk */ +#define MCDDSKIN MCD_ST_DSKIN /* sensed disk in drive */ +#define MCDDOOROPEN MCD_ST_DOOROPEN /* sensed door open */ + +/* toc */ +#define MCD_MAXTOCS 104 /* from the Linux driver */ +#define MCD_LASTPLUS1 170 /* special toc entry */ + +struct mcd_mbx { + short unit; + short port; + short retry; + short nblk; + int sz; + u_long skip; + struct buf *bp; + int p_offset; + short count; +}; + +struct mcd_data { + short config; + short flags; + short status; + int blksize; + u_long disksize; + int iobase; + struct disklabel dlabel; + int partflags[MAXPARTITIONS]; + int openflags; + struct mcd_volinfo volinfo; +#ifndef MCDMINI + struct mcd_qchninfo toc[MCD_MAXTOCS]; + short audio_status; + struct mcd_read2 lastpb; +#endif + short debug; + struct buf head; /* head of buf queue */ + struct mcd_mbx mbx; +} mcd_data[NMCD]; + +/* reader state machine */ +#define MCD_S_BEGIN 0 +#define MCD_S_BEGIN1 1 +#define MCD_S_WAITSTAT 2 +#define MCD_S_WAITMODE 3 +#define MCD_S_WAITREAD 4 + +/* prototypes */ +int mcdopen(dev_t dev); +int mcdclose(dev_t dev); +int mcdstrategy(struct buf *bp); +int mcdioctl(dev_t dev, int cmd, caddr_t addr, int flags); +int mcdsize(dev_t dev); +static void mcd_done(struct mcd_mbx *mbx); +static void mcd_start(int unit); +static int mcd_getdisklabel(int unit); +static void mcd_configure(struct mcd_data *cd); +static int mcd_get(int unit, char *buf, int nmax); +static void mcd_setflags(int unit,struct mcd_data *cd); +static int mcd_getstat(int unit,int sflg); +static int mcd_send(int unit, int cmd,int nretrys); +static int bcd2bin(bcd_t b); +static bcd_t bin2bcd(int b); +static void hsg2msf(int hsg, bcd_t *msf); +static int msf2hsg(bcd_t *msf); +static int mcd_volinfo(int unit); +static int mcd_waitrdy(int port,int dly); +static void mcd_doread(int state, struct mcd_mbx *mbxin); +#ifndef MCDMINI +static int mcd_setmode(int unit, int mode); +static int mcd_getqchan(int unit, struct mcd_qchninfo *q); +static int mcd_subchan(int unit, struct ioc_read_subchannel *sc); +static int mcd_toc_header(int unit, struct ioc_toc_header *th); +static int mcd_read_toc(int unit); +static int mcd_toc_entry(int unit, struct ioc_read_toc_entry *te); +static int mcd_stop(int unit); +static int mcd_playtracks(int unit, struct ioc_play_track *pt); +static int mcd_play(int unit, struct mcd_read2 *pb); +static int mcd_pause(int unit); +static int mcd_resume(int unit); +#endif + +extern int hz; +extern int mcd_probe(struct isa_device *dev); +extern int mcd_attach(struct isa_device *dev); +struct isa_driver mcddriver = { mcd_probe, mcd_attach, "mcd" }; + +#define mcd_put(port,byte) outb(port,byte) + +#define MCD_RETRYS 5 +#define MCD_RDRETRYS 8 + +#define MCDBLK 2048 /* for cooked mode */ +#define MCDRBLK 2352 /* for raw mode */ + +/* several delays */ +#define RDELAY_WAITSTAT 300 +#define RDELAY_WAITMODE 300 +#define RDELAY_WAITREAD 800 + +#define DELAY_STATUS 10000l /* 10000 * 1us */ +#define DELAY_GETREPLY 200000l /* 200000 * 2us */ +#define DELAY_SEEKREAD 20000l /* 20000 * 1us */ +#define mcd_delay DELAY + +int mcd_attach(struct isa_device *dev) +{ + struct mcd_data *cd = mcd_data + dev->id_unit; + int i; + + cd->iobase = dev->id_iobase; + cd->flags |= MCDINIT; + cd->openflags = 0; + for (i=0; i<MAXPARTITIONS; i++) cd->partflags[i] = 0; + +#ifdef NOTYET + /* wire controller for interrupts and dma */ + mcd_configure(cd); +#endif + + return 1; +} + +int mcdopen(dev_t dev) +{ + int unit,part,phys; + struct mcd_data *cd; + + unit = mcd_unit(dev); + if (unit >= NMCD) + return ENXIO; + + cd = mcd_data + unit; + part = mcd_part(dev); + phys = mcd_phys(dev); + + /* not initialized*/ + if (!(cd->flags & MCDINIT)) + return ENXIO; + + /* invalidated in the meantime? mark all open part's invalid */ + if (!(cd->flags & MCDVALID) && cd->openflags) + return ENXIO; + + if (mcd_getstat(unit,1) < 0) + return ENXIO; + + /* XXX get a default disklabel */ + mcd_getdisklabel(unit); + + if (mcdsize(dev) < 0) { + printf("mcd%d: failed to get disk size\n",unit); + return ENXIO; + } else + cd->flags |= MCDVALID; + +MCD_TRACE("open: partition=%d, disksize = %d, blksize=%d\n", + part,cd->disksize,cd->blksize,0); + + if (part == RAW_PART || + (part < cd->dlabel.d_npartitions && + cd->dlabel.d_partitions[part].p_fstype != FS_UNUSED)) { + cd->partflags[part] |= MCDOPEN; + cd->openflags |= (1<<part); + if (part == RAW_PART && phys != 0) + cd->partflags[part] |= MCDREADRAW; + return 0; + } + + return ENXIO; +} + +int mcdclose(dev_t dev) +{ + int unit,part,phys; + struct mcd_data *cd; + + unit = mcd_unit(dev); + if (unit >= NMCD) + return ENXIO; + + cd = mcd_data + unit; + part = mcd_part(dev); + phys = mcd_phys(dev); + + if (!(cd->flags & MCDINIT)) + return ENXIO; + + mcd_getstat(unit,1); /* get status */ + + /* close channel */ + cd->partflags[part] &= ~(MCDOPEN|MCDREADRAW); + cd->openflags &= ~(1<<part); + MCD_TRACE("close: partition=%d\n",part,0,0,0); + + return 0; +} + +int mcdstrategy(struct buf *bp) +{ + struct mcd_data *cd; + struct buf *qp; + int s; + + int unit = mcd_unit(bp->b_dev); + + cd = mcd_data + unit; + + /* test validity */ +/*MCD_TRACE("strategy: buf=0x%lx, unit=%ld, block#=%ld bcount=%ld\n", + bp,unit,bp->b_blkno,bp->b_bcount);*/ + if (unit >= NMCD || bp->b_blkno < 0) { + printf("mcdstrategy: unit = %d, blkno = %d, bcount = %d\n", + unit, bp->b_blkno, bp->b_bcount); + pg("mcd: mcdstratregy failure"); + bp->b_error = EINVAL; + bp->b_flags |= B_ERROR; + goto bad; + } + + /* if device invalidated (e.g. media change, door open), error */ + if (!(cd->flags & MCDVALID)) { +MCD_TRACE("strategy: drive not valid\n",0,0,0,0); + 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; + + /* for non raw access, check partition limits */ + if (mcd_part(bp->b_dev) != RAW_PART) { + if (!(cd->flags & MCDLABEL)) { + bp->b_error = EIO; + goto bad; + } + /* adjust transfer if necessary */ + if (bounds_check_with_label(bp,&cd->dlabel,1) <= 0) { + goto done; + } + } + + /* queue it */ + qp = &cd->head; + s = splbio(); + disksort(qp,bp); + splx(s); + + /* now check whether we can perform processing */ + mcd_start(unit); + return; + +bad: + bp->b_flags |= B_ERROR; +done: + bp->b_resid = bp->b_bcount; + biodone(bp); + return; +} + +static void mcd_start(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + struct buf *bp, *qp = &cd->head; + struct partition *p; + int part; + register s = splbio(); + + if (cd->flags & MCDMBXBSY) + return; + + if ((bp = qp->b_actf) != 0) { + /* block found to process, dequeue */ + /*MCD_TRACE("mcd_start: found block bp=0x%x\n",bp,0,0,0);*/ + qp->b_actf = bp->av_forw; + splx(s); + } else { + /* nothing to do */ + splx(s); + return; + } + + /* changed media? */ + if (!(cd->flags & MCDVALID)) { + MCD_TRACE("mcd_start: drive not valid\n",0,0,0,0); + return; + } + + p = cd->dlabel.d_partitions + mcd_part(bp->b_dev); + + cd->flags |= MCDMBXBSY; + cd->mbx.unit = unit; + cd->mbx.port = cd->iobase; + cd->mbx.retry = MCD_RETRYS; + cd->mbx.bp = bp; + cd->mbx.p_offset = p->p_offset; + + /* calling the read routine */ + mcd_doread(MCD_S_BEGIN,&(cd->mbx)); + /* triggers mcd_start, when successful finished */ + return; +} + +int mcdioctl(dev_t dev, int cmd, caddr_t addr, int flags) +{ + struct mcd_data *cd; + int unit,part; + + unit = mcd_unit(dev); + part = mcd_part(dev); + cd = mcd_data + unit; + +#ifdef MCDMINI + return ENOTTY; +#else + if (!(cd->flags & MCDVALID)) + return EIO; +MCD_TRACE("ioctl called 0x%x\n",cmd,0,0,0); + + switch (cmd) { + case DIOCSBAD: + return EINVAL; + case DIOCGDINFO: + case DIOCGPART: + case DIOCWDINFO: + case DIOCSDINFO: + case DIOCWLABEL: + return ENOTTY; + case CDIOCPLAYTRACKS: + return mcd_playtracks(unit, (struct ioc_play_track *) addr); + case CDIOCPLAYBLOCKS: + return mcd_play(unit, (struct mcd_read2 *) addr); + case CDIOCREADSUBCHANNEL: + return mcd_subchan(unit, (struct ioc_read_subchannel *) addr); + case CDIOREADTOCHEADER: + return mcd_toc_header(unit, (struct ioc_toc_header *) addr); + case CDIOREADTOCENTRYS: + return mcd_toc_entry(unit, (struct ioc_read_toc_entry *) addr); + case CDIOCSETPATCH: + case CDIOCGETVOL: + case CDIOCSETVOL: + case CDIOCSETMONO: + case CDIOCSETSTERIO: + case CDIOCSETMUTE: + case CDIOCSETLEFT: + case CDIOCSETRIGHT: + return EINVAL; + case CDIOCRESUME: + return mcd_resume(unit); + case CDIOCPAUSE: + return mcd_pause(unit); + case CDIOCSTART: + return EINVAL; + case CDIOCSTOP: + return mcd_stop(unit); + case CDIOCEJECT: + return EINVAL; + case CDIOCSETDEBUG: + cd->debug = 1; + return 0; + case CDIOCCLRDEBUG: + cd->debug = 0; + return 0; + case CDIOCRESET: + return EINVAL; + default: + return ENOTTY; + } + /*NOTREACHED*/ +#endif /*!MCDMINI*/ +} + +/* this could have been taken from scsi/cd.c, but it is not clear + * whether the scsi cd driver is linked in + */ +static int mcd_getdisklabel(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + + if (cd->flags & MCDLABEL) + return -1; + + bzero(&cd->dlabel,sizeof(struct disklabel)); + strncpy(cd->dlabel.d_typename,"Mitsumi CD ROM ",16); + strncpy(cd->dlabel.d_packname,"unknown ",16); + 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 |= MCDLABEL; + return 0; +} + +int mcdsize(dev_t dev) +{ + int size; + int unit = mcd_unit(dev); + struct mcd_data *cd = mcd_data + unit; + + if (mcd_volinfo(unit) >= 0) { + cd->blksize = MCDBLK; + size = msf2hsg(cd->volinfo.vol_msf); + cd->disksize = size * (MCDBLK/DEV_BSIZE); + return 0; + } + return -1; +} + +/*************************************************************** + * lower level of driver starts here + **************************************************************/ + +#ifdef NOTDEF +static char irqs[] = { + 0x00,0x00,0x10,0x20,0x00,0x30,0x00,0x00, + 0x00,0x10,0x40,0x50,0x00,0x00,0x00,0x00 +}; + +static char drqs[] = { + 0x00,0x01,0x00,0x03,0x00,0x05,0x06,0x07, +}; +#endif + +static void mcd_configure(struct mcd_data *cd) +{ + outb(cd->iobase+mcd_config,cd->config); +} + +/* check if there is a cdrom */ +/* Heavly hacked by gclarkii@sugar.neosoft.com */ + +int mcd_probe(struct isa_device *dev) +{ + int port = dev->id_iobase; + int unit = dev->id_unit; + int i; + int st; + int check; + int junk; + + mcd_data[unit].flags = MCDPROBING; + +#ifdef NOTDEF + /* get irq/drq configuration word */ + mcd_data[unit].config = irqs[dev->id_irq]; /* | drqs[dev->id_drq];*/ +#else + mcd_data[unit].config = 0; +#endif + + /* send a reset */ + outb(port+MCD_FLAGS,0); + DELAY(100000); + /* get any pending status and throw away...*/ + for (i=10; i != 0; i--) { + inb(port+MCD_DATA); + } + DELAY(1000); + + outb(port+MCD_DATA,MCD_CMDGETSTAT); /* Send get status command */ + + /* Loop looking for avail of status */ + /* XXX May have to increase for fast machinces */ + for (i = 1000; i != 0; i--) { + if ((inb(port+MCD_FLAGS) & 0xF ) == STATUS_AVAIL) { + break; + } + DELAY(10); + } + /* get status */ + + if (i == 0) { +#ifdef DEBUG + printf ("Mitsumi drive NOT detected\n"); +#endif + return 0; + } + +/* + * The following code uses the 0xDC command, it returns a M from the + * second byte and a number in the third. Does anyone know what the + * number is for? Better yet, how about someone thats REAL good in + * i80x86 asm looking at the Dos driver... Most of this info came + * from a friend of mine spending a whole weekend..... + */ + + DELAY (2000); + outb(port+MCD_DATA,MCD_CMDCONTINFO); + for (i = 0; i < 100000; i++) { + if ((inb(port+MCD_FLAGS) & 0xF) == STATUS_AVAIL) + break; + } + if (i > 100000) { +#ifdef DEBUG + printf ("Mitsumi drive error\n"); +#endif + return 0; + } + DELAY (40000); + st = inb(port+MCD_DATA); + DELAY (500); + check = inb(port+MCD_DATA); + DELAY (500); + junk = inb(port+MCD_DATA); /* What is byte used for?!?!? */ + + if (check = 'M') { +#ifdef DEBUG + printf("Mitsumi drive detected\n"); +#endif + return 4; + } else { + printf("Mitsumi drive NOT detected\n"); + printf("Mitsumi drive error\n"); + return 0; + } +} + +static int mcd_waitrdy(int port,int dly) +{ + int i; + + /* wait until xfer port senses data ready */ + for (i=0; i<dly; i++) { + if ((inb(port+mcd_xfer) & MCD_ST_BUSY)==0) + return 0; + mcd_delay(1); + } + return -1; +} + +static int mcd_getreply(int unit,int dly) +{ + int i; + struct mcd_data *cd = mcd_data + unit; + int port = cd->iobase; + + /* wait data to become ready */ + if (mcd_waitrdy(port,dly)<0) { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: timeout getreply\n",unit); +#endif + return -1; + } + + /* get the data */ + return inb(port+mcd_status) & 0xFF; +} + +static int mcd_getstat(int unit,int sflg) +{ + int i; + struct mcd_data *cd = mcd_data + unit; + int port = cd->iobase; + + /* get the status */ + if (sflg) + outb(port+mcd_command, MCD_CMDGETSTAT); + i = mcd_getreply(unit,DELAY_GETREPLY); + if (i<0) return -1; + + cd->status = i; + + mcd_setflags(unit,cd); + return cd->status; +} + +static void mcd_setflags(int unit, struct mcd_data *cd) +{ + /* check flags */ + if (cd->status & (MCDDSKCHNG|MCDDOOROPEN)) { + MCD_TRACE("getstat: sensed DSKCHNG or DOOROPEN\n",0,0,0,0); + cd->flags &= ~MCDVALID; + } + +#ifndef MCDMINI + if (cd->status & MCDAUDIOBSY) + cd->audio_status = CD_AS_PLAY_IN_PROGRESS; + else if (cd->audio_status == CD_AS_PLAY_IN_PROGRESS) + cd->audio_status = CD_AS_PLAY_COMPLETED; +#endif +} + +static int mcd_get(int unit, char *buf, int nmax) +{ + int port = mcd_data[unit].iobase; + int i,k; + + for (i=0; i<nmax; i++) { + + /* wait for data */ + if ((k = mcd_getreply(unit,DELAY_GETREPLY)) < 0) { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: timeout mcd_get\n",unit); +#endif + return -1; + } + buf[i] = k; + } + return i; +} + +static int mcd_send(int unit, int cmd,int nretrys) +{ + int i,k; + int port = mcd_data[unit].iobase; + +/*MCD_TRACE("mcd_send: command = 0x%x\n",cmd,0,0,0);*/ + for (i=0; i<nretrys; i++) { + outb(port+mcd_command, cmd); + if ((k=mcd_getstat(unit,0)) != -1) + break; + } + if (i == nretrys) { + printf("mcd%d: mcd_send retry cnt exceeded\n",unit); + return -1; + } +/*MCD_TRACE("mcd_send: status = 0x%x\n",k,0,0,0);*/ + return 0; +} + +static int bcd2bin(bcd_t b) +{ + return (b >> 4) * 10 + (b & 15); +} + +static bcd_t bin2bcd(int b) +{ + return ((b / 10) << 4) | (b % 10); +} + +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 int mcd_volinfo(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + int i; + +/*MCD_TRACE("mcd_volinfo: enter\n",0,0,0,0);*/ + + /* Get the status, in case the disc has been changed */ + if (mcd_getstat(unit, 1) < 0) return EIO; + + /* Just return if we already have it */ + if (cd->flags & MCDVOLINFO) return 0; + + /* send volume info command */ + if (mcd_send(unit,MCD_CMDGETVOLINFO,MCD_RETRYS) < 0) + return -1; + + /* get data */ + if (mcd_get(unit,(char*) &cd->volinfo,sizeof(struct mcd_volinfo)) < 0) { + printf("mcd%d: mcd_volinfo: error read data\n",unit); + return -1; + } + + if (cd->volinfo.trk_low != 0 || cd->volinfo.trk_high != 0) { + cd->flags |= MCDVOLINFO; /* volinfo is OK */ + return 0; + } + + return -1; +} + +int mcdintr(unit) +{ + int port = mcd_data[unit].iobase; + u_int i; + + MCD_TRACE("stray interrupt xfer=0x%x\n",inb(port+mcd_xfer),0,0,0); + + /* just read out status and ignore the rest */ + if ((inb(port+mcd_xfer)&0xFF) != 0xFF) { + i = inb(port+mcd_status); + } +} + +/* state machine to process read requests + * initialize with MCD_S_BEGIN: calculate sizes, and read status + * MCD_S_WAITSTAT: wait for status reply, set mode + * MCD_S_WAITMODE: waits for status reply from set mode, set read command + * MCD_S_WAITREAD: wait for read ready, read data + */ +static struct mcd_mbx *mbxsave; + +static void mcd_doread(int state, struct mcd_mbx *mbxin) +{ + struct mcd_mbx *mbx = (state!=MCD_S_BEGIN) ? mbxsave : mbxin; + int unit = mbx->unit; + int port = mbx->port; + struct buf *bp = mbx->bp; + struct mcd_data *cd = mcd_data + unit; + + int rm,i,k; + struct mcd_read2 rbuf; + int blknum; + caddr_t addr; + +loop: + switch (state) { + case MCD_S_BEGIN: + mbx = mbxsave = mbxin; + + case MCD_S_BEGIN1: + /* get status */ + outb(port+mcd_command, MCD_CMDGETSTAT); + mbx->count = RDELAY_WAITSTAT; + timeout(mcd_doread,MCD_S_WAITSTAT,hz/100); + return; + case MCD_S_WAITSTAT: + untimeout(mcd_doread,MCD_S_WAITSTAT); + if (mbx->count-- >= 0) { + if (inb(port+mcd_xfer) & MCD_ST_BUSY) { + timeout(mcd_doread,MCD_S_WAITSTAT,hz/100); + return; + } + mcd_setflags(unit,cd); + MCD_TRACE("got WAITSTAT delay=%d\n",RDELAY_WAITSTAT-mbx->count,0,0,0); + /* reject, if audio active */ + if (cd->status & MCDAUDIOBSY) { + printf("mcd%d: audio is active\n",unit); + goto readerr; + } + + /* to check for raw/cooked mode */ + if (cd->flags & MCDREADRAW) { + rm = MCD_MD_RAW; + mbx->sz = MCDRBLK; + } else { + rm = MCD_MD_COOKED; + mbx->sz = cd->blksize; + } + + mbx->count = RDELAY_WAITMODE; + + mcd_put(port+mcd_command, MCD_CMDSETMODE); + mcd_put(port+mcd_command, rm); + timeout(mcd_doread,MCD_S_WAITMODE,hz/100); + return; + } else { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: timeout getstatus\n",unit); +#endif + goto readerr; + } + + case MCD_S_WAITMODE: + untimeout(mcd_doread,MCD_S_WAITMODE); + if (mbx->count-- < 0) { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: timeout set mode\n",unit); +#endif + goto readerr; + } + if (inb(port+mcd_xfer) & MCD_ST_BUSY) { + timeout(mcd_doread,MCD_S_WAITMODE,hz/100); + return; + } + mcd_setflags(unit,cd); + MCD_TRACE("got WAITMODE delay=%d\n",RDELAY_WAITMODE-mbx->count,0,0,0); + /* for first block */ + mbx->nblk = (bp->b_bcount + (mbx->sz-1)) / mbx->sz; + mbx->skip = 0; + +nextblock: + blknum = (bp->b_blkno / (mbx->sz/DEV_BSIZE)) + + mbx->p_offset + mbx->skip/mbx->sz; + + MCD_TRACE("mcd_doread: read blknum=%d for bp=0x%x\n",blknum,bp,0,0); + + /* build parameter block */ + hsg2msf(blknum,rbuf.start_msf); + + /* send the read command */ + mcd_put(port+mcd_command,MCD_CMDREAD2); + mcd_put(port+mcd_command,rbuf.start_msf[0]); + mcd_put(port+mcd_command,rbuf.start_msf[1]); + mcd_put(port+mcd_command,rbuf.start_msf[2]); + mcd_put(port+mcd_command,0); + mcd_put(port+mcd_command,0); + mcd_put(port+mcd_command,1); + mbx->count = RDELAY_WAITREAD; + timeout(mcd_doread,MCD_S_WAITREAD,hz/100); + return; + case MCD_S_WAITREAD: + untimeout(mcd_doread,MCD_S_WAITREAD); + if (mbx->count-- > 0) { + k = inb(port+mcd_xfer); + if ((k & 2)==0) { + MCD_TRACE("got data delay=%d\n",RDELAY_WAITREAD-mbx->count,0,0,0); + /* data is ready */ + addr = bp->b_un.b_addr + mbx->skip; + outb(port+mcd_ctl2,0x04); /* XXX */ + for (i=0; i<mbx->sz; i++) + *addr++ = inb(port+mcd_rdata); + outb(port+mcd_ctl2,0x0c); /* XXX */ + + if (--mbx->nblk > 0) { + mbx->skip += mbx->sz; + goto nextblock; + } + + /* return buffer */ + bp->b_resid = 0; + biodone(bp); + + cd->flags &= ~MCDMBXBSY; + mcd_start(mbx->unit); + return; + } + if ((k & 4)==0) + mcd_getstat(unit,0); + timeout(mcd_doread,MCD_S_WAITREAD,hz/100); + return; + } else { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: timeout read data\n",unit); +#endif + goto readerr; + } + } + +readerr: + if (mbx->retry-- > 0) { +#ifdef MCD_TO_WARNING_ON + printf("mcd%d: retrying\n",unit); +#endif + state = MCD_S_BEGIN1; + goto loop; + } + + /* invalidate the buffer */ + bp->b_flags |= B_ERROR; + bp->b_resid = bp->b_bcount; + biodone(bp); + mcd_start(mbx->unit); + return; + +#ifdef NOTDEF + printf("mcd%d: unit timeout, resetting\n",mbx->unit); + outb(mbx->port+mcd_reset,MCD_CMDRESET); + DELAY(300000); + (void)mcd_getstat(mbx->unit,1); + (void)mcd_getstat(mbx->unit,1); + /*cd->status &= ~MCDDSKCHNG; */ + cd->debug = 1; /* preventive set debug mode */ + +#endif + +} + +#ifndef MCDMINI +static int mcd_setmode(int unit, int mode) +{ + struct mcd_data *cd = mcd_data + unit; + int port = cd->iobase; + int retry; + + printf("mcd%d: setting mode to %d\n", unit, mode); + for(retry=0; retry<MCD_RETRYS; retry++) + { + outb(port+mcd_command, MCD_CMDSETMODE); + outb(port+mcd_command, mode); + if (mcd_getstat(unit, 0) != -1) return 0; + } + + return -1; +} + +static int mcd_toc_header(int unit, struct ioc_toc_header *th) +{ + struct mcd_data *cd = mcd_data + unit; + + if (mcd_volinfo(unit) < 0) + return ENXIO; + + th->len = msf2hsg(cd->volinfo.vol_msf); + th->starting_track = bcd2bin(cd->volinfo.trk_low); + th->ending_track = bcd2bin(cd->volinfo.trk_high); + + return 0; +} + +static int mcd_read_toc(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + struct ioc_toc_header th; + struct mcd_qchninfo q; + int rc, trk, idx, retry; + + /* Only read TOC if needed */ + if (cd->flags & MCDTOC) return 0; + + printf("mcd%d: reading toc header\n", unit); + if (mcd_toc_header(unit, &th) != 0) + return ENXIO; + + printf("mcd%d: stopping play\n", unit); + if ((rc=mcd_stop(unit)) != 0) + return rc; + + /* try setting the mode twice */ + if (mcd_setmode(unit, MCD_MD_TOC) != 0) + return EIO; + if (mcd_setmode(unit, MCD_MD_TOC) != 0) + return EIO; + + printf("mcd%d: get_toc reading qchannel info\n",unit); + for(trk=th.starting_track; trk<=th.ending_track; trk++) + cd->toc[trk].idx_no = 0; + trk = th.ending_track - th.starting_track + 1; + for(retry=0; retry<300 && trk>0; retry++) + { + if (mcd_getqchan(unit, &q) < 0) break; + idx = bcd2bin(q.idx_no); + if (idx>0 && idx < MCD_MAXTOCS && q.trk_no==0) + if (cd->toc[idx].idx_no == 0) + { + cd->toc[idx] = q; + trk--; + } + } + + if (mcd_setmode(unit, MCD_MD_COOKED) != 0) + return EIO; + + if (trk != 0) return ENXIO; + + /* add a fake last+1 */ + idx = th.ending_track + 1; + cd->toc[idx].ctrl_adr = cd->toc[idx-1].ctrl_adr; + cd->toc[idx].trk_no = 0; + cd->toc[idx].idx_no = 0xAA; + cd->toc[idx].hd_pos_msf[0] = cd->volinfo.vol_msf[0]; + cd->toc[idx].hd_pos_msf[1] = cd->volinfo.vol_msf[1]; + cd->toc[idx].hd_pos_msf[2] = cd->volinfo.vol_msf[2]; + + cd->flags |= MCDTOC; + + return 0; +} + +static int mcd_toc_entry(int unit, struct ioc_read_toc_entry *te) +{ + struct mcd_data *cd = mcd_data + unit; + struct ret_toc + { + struct ioc_toc_header th; + struct cd_toc_entry rt; + } ret_toc; + struct ioc_toc_header th; + int rc, i; + + /* Make sure we have a valid toc */ + if ((rc=mcd_read_toc(unit)) != 0) + return rc; + + /* find the toc to copy*/ + i = te->starting_track; + if (i == MCD_LASTPLUS1) + i = bcd2bin(cd->volinfo.trk_high) + 1; + + /* verify starting track */ + if (i < bcd2bin(cd->volinfo.trk_low) || + i > bcd2bin(cd->volinfo.trk_high)+1) + return EINVAL; + + /* do we have room */ + if (te->data_len < sizeof(struct ioc_toc_header) + + sizeof(struct cd_toc_entry)) return EINVAL; + + /* Copy the toc header */ + if (mcd_toc_header(unit, &th) < 0) return EIO; + ret_toc.th = th; + + /* copy the toc data */ + ret_toc.rt.control = cd->toc[i].ctrl_adr; + ret_toc.rt.addr_type = te->address_format; + ret_toc.rt.track = i; + if (te->address_format == CD_MSF_FORMAT) + { + ret_toc.rt.addr[1] = cd->toc[i].hd_pos_msf[0]; + ret_toc.rt.addr[2] = cd->toc[i].hd_pos_msf[1]; + ret_toc.rt.addr[3] = cd->toc[i].hd_pos_msf[2]; + } + + /* copy the data back */ + copyout(&ret_toc, te->data, sizeof(struct cd_toc_entry) + + sizeof(struct ioc_toc_header)); + + return 0; +} + +static int mcd_stop(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + + if (mcd_send(unit, MCD_CMDSTOPAUDIO, MCD_RETRYS) < 0) + return ENXIO; + cd->audio_status = CD_AS_PLAY_COMPLETED; + return 0; +} + +static int mcd_getqchan(int unit, struct mcd_qchninfo *q) +{ + struct mcd_data *cd = mcd_data + unit; + + if (mcd_send(unit, MCD_CMDGETQCHN, MCD_RETRYS) < 0) + return -1; + if (mcd_get(unit, (char *) q, sizeof(struct mcd_qchninfo)) < 0) + return -1; + if (cd->debug) + printf("mcd%d: qchannel ctl=%d, t=%d, i=%d, ttm=%d:%d.%d dtm=%d:%d.%d\n", + unit, + q->ctrl_adr, q->trk_no, q->idx_no, + q->trk_size_msf[0], q->trk_size_msf[1], q->trk_size_msf[2], + q->trk_size_msf[0], q->trk_size_msf[1], q->trk_size_msf[2]); + return 0; +} + +static int mcd_subchan(int unit, struct ioc_read_subchannel *sc) +{ + struct mcd_data *cd = mcd_data + unit; + struct mcd_qchninfo q; + struct cd_sub_channel_info data; + + printf("mcd%d: subchan af=%d, df=%d\n", unit, + sc->address_format, + sc->data_format); + if (sc->address_format != CD_MSF_FORMAT) return EIO; + if (sc->data_format != CD_CURRENT_POSITION) return EIO; + + if (mcd_getqchan(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.trk_no); + + if (copyout(&data, sc->data, sizeof(struct cd_sub_channel_info))!=0) + return EFAULT; + return 0; +} + +static int mcd_playtracks(int unit, struct ioc_play_track *pt) +{ + struct mcd_data *cd = mcd_data + unit; + struct mcd_read2 pb; + int a = pt->start_track; + int z = pt->end_track; + int rc; + + if ((rc = mcd_read_toc(unit)) != 0) return rc; + + printf("mcd%d: playtracks from %d:%d to %d:%d\n", unit, + a, pt->start_index, z, pt->end_index); + + if (a < cd->volinfo.trk_low || a > cd->volinfo.trk_high || a > z || + z < cd->volinfo.trk_low || z > cd->volinfo.trk_high) + return EINVAL; + + pb.start_msf[0] = cd->toc[a].hd_pos_msf[0]; + pb.start_msf[1] = cd->toc[a].hd_pos_msf[1]; + pb.start_msf[2] = cd->toc[a].hd_pos_msf[2]; + pb.end_msf[0] = cd->toc[z+1].hd_pos_msf[0]; + pb.end_msf[1] = cd->toc[z+1].hd_pos_msf[1]; + pb.end_msf[2] = cd->toc[z+1].hd_pos_msf[2]; + + return mcd_play(unit, &pb); +} + +static int mcd_play(int unit, struct mcd_read2 *pb) +{ + struct mcd_data *cd = mcd_data + unit; + int port = cd->iobase; + int retry, st; + + cd->lastpb = *pb; + for(retry=0; retry<MCD_RETRYS; retry++) + { + outb(port+mcd_command, MCD_CMDREAD2); + outb(port+mcd_command, pb->start_msf[0]); + outb(port+mcd_command, pb->start_msf[1]); + outb(port+mcd_command, pb->start_msf[2]); + outb(port+mcd_command, pb->end_msf[0]); + outb(port+mcd_command, pb->end_msf[1]); + outb(port+mcd_command, pb->end_msf[2]); + if ((st=mcd_getstat(unit, 0)) != -1) break; + } + + if (cd->debug) + printf("mcd%d: mcd_play retry=%d, status=%d\n", unit, retry, st); + if (st == -1) return ENXIO; + cd->audio_status = CD_AS_PLAY_IN_PROGRESS; + return 0; +} + +static int mcd_pause(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + struct mcd_qchninfo q; + int rc; + + /* Verify current status */ + if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS) + { + printf("mcd%d: pause attempted when not playing\n", unit); + return EINVAL; + } + + /* Get the current position */ + if (mcd_getqchan(unit, &q) < 0) return EIO; + + /* Copy it into lastpb */ + cd->lastpb.start_msf[0] = q.hd_pos_msf[0]; + cd->lastpb.start_msf[1] = q.hd_pos_msf[1]; + cd->lastpb.start_msf[2] = q.hd_pos_msf[2]; + + /* Stop playing */ + if ((rc=mcd_stop(unit)) != 0) return rc; + + /* Set the proper status and exit */ + cd->audio_status = CD_AS_PLAY_PAUSED; + return 0; +} + +static int mcd_resume(int unit) +{ + struct mcd_data *cd = mcd_data + unit; + + if (cd->audio_status != CD_AS_PLAY_PAUSED) return EINVAL; + return mcd_play(unit, &cd->lastpb); +} +#endif /*!MCDMINI*/ + +#endif /* NMCD > 0 */ diff --git a/sys/i386/isa/mcdreg.h b/sys/i386/isa/mcdreg.h new file mode 100644 index 0000000..83664a7 --- /dev/null +++ b/sys/i386/isa/mcdreg.h @@ -0,0 +1,150 @@ +/* + * Copyright 1993 by Holger Veit (data part) + * Copyright 1993 by Brian Moore (audio part) + * 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 software was developed by Holger Veit and Brian Moore + * for use with "386BSD" and similar operating systems. + * "Similar operating systems" includes mainly non-profit oriented + * systems for research and education, including but not restricted to + * "NetBSD", "FreeBSD", "Mach" (by CMU). + * 4. Neither the name of the developer(s) nor the name "386BSD" + * may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER(S) ``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 DEVELOPER(S) 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. + * + * This file contains definitions for some cdrom control commands + * and status codes. This info was "inherited" from the DOS MTMCDE.SYS + * driver, and is thus not complete (and may even be wrong). Some day + * the manufacturer or anyone else might provide better documentation, + * so this file (and the driver) will then have a better quality. + * + * $Id$ + */ + +#ifndef MCD_H +#define MCD_H + +#ifdef __GNUC__ +#if __GNUC__ >= 2 +#pragma pack(1) +#endif +#endif + +typedef unsigned char bcd_t; +#define M_msf(msf) msf[0] +#define S_msf(msf) msf[1] +#define F_msf(msf) msf[2] + +/* io lines used */ +#define MCD_IO_BASE 0x300 + +#define mcd_command 0 +#define mcd_status 0 +#define mcd_rdata 0 + +#define mcd_reset 1 +#define mcd_xfer 1 +#define mcd_ctl2 2 /* XXX Is this right? */ + +#define mcd_config 3 +#define MCD_MASK_DMA 0x07 /* bits 2-0 = DMA channel */ +#define MCD_MASK_IRQ 0x70 /* bits 6-4 = INT number */ + /* 001 = int 2,9 */ + /* 010 = int 3 */ + /* 011 = int 5 */ + /* 100 = int 10 */ + /* 101 = int 11 */ +/* flags */ +#define STATUS_AVAIL 0xb +#define DATA_AVAIL 0xf + +/* ports */ +#define MCD_DATA 0 +#define MCD_FLAGS 1 +#define MCD_DONT_KNOW 2 /* What are these two ports for??? */ +#define CHANNEL 3 + +/* Status bits */ +#define MCD_ST_DOOROPEN 0x80 +#define MCD_ST_DSKIN 0x40 +#define MCD_ST_DSKCHNG 0x20 +#define MCD_ST_BUSY 0x04 +#define MCD_ST_AUDIOBSY 0x02 + +/* commands known by the controller */ +#define MCD_CMDRESET 0x00 +#define MCD_CMDGETVOLINFO 0x10 /* gets mcd_volinfo */ +#define MCD_CMDGETQCHN 0x20 /* gets mcd_qchninfo */ +#define MCD_CMDGETSTAT 0x40 /* gets a byte of status */ +#define MCD_CMDSETMODE 0x50 /* set transmission mode, needs byte */ +#define MCD_MD_RAW 0x60 +#define MCD_MD_COOKED 0x01 +#define MCD_MD_TOC 0x05 +#define MCD_CMDSTOPAUDIO 0x70 +#define MCD_CMDGETVOLUME 0x8E /* gets mcd_volume */ +#define MCD_CMDSETVOLUME 0xAE /* sets mcd_volume */ +#define MCD_CMDREAD1 0xB0 /* read n sectors */ +#define MCD_CMDREAD2 0xC0 /* read from-to */ +#define MCD_CMDCONTINFO 0xDC /* Get controller info */ +#define MCD_CMDEJECTDISK 0xF6 +#define MCD_CMDCLOSETRAY 0xF8 +#define MCD_CMDLOCKDRV 0xFE /* needs byte */ +#define MCD_LK_UNLOCK 0x00 +#define MCD_LK_LOCK 0x01 +#define MCD_LK_TEST 0x02 + +struct mcd_volinfo { + bcd_t trk_low; + bcd_t trk_high; + bcd_t vol_msf[3]; + bcd_t trk1_msf[3]; +}; + +struct mcd_qchninfo { + u_char ctrl_adr; + u_char trk_no; + u_char idx_no; + bcd_t trk_size_msf[3]; + u_char :8; + bcd_t hd_pos_msf[3]; +}; + +struct mcd_volume { + u_char v0l; + u_char v0rs; + u_char v0r; + u_char v0ls; +}; + +struct mcd_read1 { + bcd_t start_msf[3]; + u_char nsec[3]; +}; + +struct mcd_read2 { + bcd_t start_msf[3]; + bcd_t end_msf[3]; +}; +#endif /* MCD_H */ |
