/* * Copyright 1993 by Holger Veit (data part) * Copyright 1993 by Brian Moore (audio part) * Changes Copyright 1993 by Gary Clark II * Changes Copyright (C) 1994-1995 by Andrey A. Chernov, Moscow, Russia * * 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. * 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: mcd.c,v 1.52 1995/12/08 11:14:34 julian Exp $ */ static char COPYRIGHT[] = "mcd-driver (C)1993 by H.Veit & B.Moore"; #include "mcd.h" #if NMCD > 0 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef DEVFS #include #endif /*DEVFS*/ #include #include #include #include #include #define MCD_TRACE(format, args...) \ { \ if (mcd_data[unit].debug) { \ printf("mcd%d: status=0x%02x: ", \ unit, mcd_data[unit].status); \ printf(format, ## args); \ } \ } #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 2 /* flags */ #define MCDOPEN 0x0001 /* device opened */ #define MCDVALID 0x0002 /* parameters loaded */ #define MCDINIT 0x0004 /* device is init'd */ #define MCDNEWMODEL 0x0008 /* device is new model */ #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 */ /* These are apparently the different states a mitsumi can get up to */ #define MCDCDABSENT 0x0030 #define MCDCDPRESENT 0x0020 #define MCDSCLOSED 0x0080 #define MCDSOPEN 0x00a0 #define MCD_MD_UNKNOWN (-1) /* toc */ #define MCD_MAXTOCS 104 /* from the Linux driver */ #define MCD_LASTPLUS1 170 /* special toc entry */ #define MCD_TYPE_UNKNOWN 0 #define MCD_TYPE_LU002S 1 #define MCD_TYPE_LU005S 2 #define MCD_TYPE_FX001 3 #define MCD_TYPE_FX001D 4 struct mcd_mbx { short unit; short port; short retry; short nblk; int sz; u_long skip; struct buf *bp; int p_offset; short count; short mode; }; struct mcd_data { short type; char *name; short config; short flags; u_char read_command; short status; int blksize; u_long disksize; int iobase; struct disklabel dlabel; int partflags[MAXPARTITIONS]; int openflags; struct mcd_volinfo volinfo; struct mcd_qchninfo toc[MCD_MAXTOCS]; short audio_status; short curr_mode; struct mcd_read2 lastpb; short debug; struct buf head; /* head of buf queue */ struct mcd_mbx mbx; #ifdef DEVFS void *ra_devfs_token; /* store the devfs handle here */ void *rc_devfs_token; /* store the devfs handle here */ void *a_devfs_token; /* store the devfs handle here */ void *c_devfs_token; /* store the devfs handle here */ #endif } 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 */ static void mcd_start(int unit); static int mcd_getdisklabel(int unit); #ifdef NOTYET static void mcd_configure(struct mcd_data *cd); #endif static int mcd_get(int unit, char *buf, int nmax); static int 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); static void mcd_soft_reset(int unit); static int mcd_hard_reset(int unit); 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_entrys(int unit, struct ioc_read_toc_entry *te); static int mcd_stop(int unit); static int mcd_eject(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_playmsf(int unit, struct ioc_play_msf *pt); static int mcd_pause(int unit); static int mcd_resume(int unit); static int mcd_lock_door(int unit, int lock); static int mcd_close_tray(int unit); static int mcd_probe(struct isa_device *dev); static int mcd_attach(struct isa_device *dev); struct isa_driver mcddriver = { mcd_probe, mcd_attach, "mcd" }; static d_open_t mcdopen; static d_close_t mcdclose; static d_ioctl_t mcdioctl; static d_psize_t mcdsize; static d_strategy_t mcdstrategy; #define CDEV_MAJOR 29 #define BDEV_MAJOR 7 extern struct cdevsw mcd_cdevsw; static struct bdevsw mcd_bdevsw = { mcdopen, mcdclose, mcdstrategy, mcdioctl, /*7*/ nxdump, mcdsize, 0, "mcd", &mcd_cdevsw, -1 }; static struct cdevsw mcd_cdevsw = { mcdopen, mcdclose, rawread, nowrite, /*29*/ mcdioctl, nostop, nullreset, nodevtotty, seltrue, nommap, mcdstrategy, "mcd", &mcd_bdevsw, -1 }; #define mcd_put(port,byte) outb(port,byte) #define MCD_RETRYS 5 #define MCD_RDRETRYS 8 #define CLOSE_TRAY_SECS 8 #define DISK_SENSE_SECS 3 #define WAIT_FRAC 4 /* several delays */ #define RDELAY_WAITSTAT 300 #define RDELAY_WAITMODE 300 #define RDELAY_WAITREAD 800 #define MIN_DELAY 15 #define DELAY_GETREPLY 5000000 static struct kern_devconf kdc_mcd[NMCD] = { { 0, 0, 0, /* filled in by dev_attach */ "mcd", 0, { MDDT_ISA, 0, "bio" }, isa_generic_externalize, 0, 0, ISA_EXTERNALLEN, &kdc_isa0, /* parent */ 0, /* parentdata */ DC_UNCONFIGURED, /* status */ "Mitsumi CD-ROM controller", /* properly filled later */ DC_CLS_RDISK } }; static inline void mcd_registerdev(struct isa_device *id) { if(id->id_unit) kdc_mcd[id->id_unit] = kdc_mcd[0]; kdc_mcd[id->id_unit].kdc_unit = id->id_unit; kdc_mcd[id->id_unit].kdc_isa = id; dev_attach(&kdc_mcd[id->id_unit]); } int mcd_attach(struct isa_device *dev) { int unit = dev->id_unit; struct mcd_data *cd = mcd_data + unit; char name[32]; cd->iobase = dev->id_iobase; cd->flags |= MCDINIT; mcd_soft_reset(unit); #ifdef NOTYET /* wire controller for interrupts and dma */ mcd_configure(cd); #endif kdc_mcd[unit].kdc_state = DC_IDLE; /* name filled in probe */ kdc_mcd[unit].kdc_description = mcd_data[unit].name; #ifdef DEVFS #define MCD_UID 0 #define MCD_GID 13 sprintf(name, "rmcd%da",unit); cd->ra_devfs_token = devfs_add_devsw( "/", name, &mcd_cdevsw, (unit * 8 ) + 0, DV_CHR, MCD_UID, MCD_GID, 0600); sprintf(name, "rmcd%dc",unit); cd->rc_devfs_token = devfs_add_devsw( "/", name, &mcd_cdevsw, (unit * 8 ) + RAW_PART, DV_CHR, MCD_UID, MCD_GID, 0600); sprintf(name, "mcd%da",unit); cd->a_devfs_token = devfs_add_devsw( "/", name, &mcd_bdevsw, (unit * 8 ) + 0, DV_BLK, MCD_UID, MCD_GID, 0600); sprintf(name, "mcd%dc",unit); cd->c_devfs_token = devfs_add_devsw( "/", name, &mcd_bdevsw, (unit * 8 ) + RAW_PART, DV_BLK, MCD_UID, MCD_GID, 0600); #endif return 1; } int mcdopen(dev_t dev, int flags, int fmt, struct proc *p) { int unit,part,phys,r,retry; 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_close_tray(unit) == EIO) /* detect disk change too */ return EIO; if ( (cd->status & (MCDDSKCHNG|MCDDOOROPEN)) || !(cd->status & MCDDSKIN)) for (retry = 0; retry < DISK_SENSE_SECS * WAIT_FRAC; retry++) { (void) tsleep((caddr_t)cd, PSOCK | PCATCH, "mcdsns", hz/WAIT_FRAC); if ((r = mcd_getstat(unit,1)) == -1) return EIO; if (r != -2) break; } if (cd->status & MCDDOOROPEN) { printf("mcd%d: door is open\n", unit); return ENXIO; } if (!(cd->status & MCDDSKIN)) { printf("mcd%d: no CD inside\n", unit); return ENXIO; } if (cd->status & MCDDSKCHNG) { printf("mcd%d: CD not sensed\n", unit); return ENXIO; } if (mcdsize(dev) < 0) { printf("mcd%d: failed to get disk size\n",unit); return ENXIO; } else cd->flags |= MCDVALID; /* XXX get a default disklabel */ mcd_getdisklabel(unit); MCD_TRACE("open: partition=%d, disksize = %ld, blksize=%d\n", part, cd->disksize, cd->blksize); 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<partflags[part] |= MCDREADRAW; kdc_mcd[unit].kdc_state = DC_BUSY; (void) mcd_lock_door(unit, MCD_LK_LOCK); if (!(cd->flags & MCDVALID)) return ENXIO; return 0; } return ENXIO; } int mcdclose(dev_t dev, int flags, int fmt, struct proc *p) { 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; kdc_mcd[unit].kdc_state = DC_IDLE; (void) mcd_lock_door(unit, MCD_LK_UNLOCK); if (!(cd->flags & MCDVALID)) return 0; /* close channel */ cd->partflags[part] &= ~(MCDOPEN|MCDREADRAW); cd->openflags &= ~(1<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 = %ld, bcount = %ld\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"); 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; } } else { bp->b_pblkno = bp->b_blkno; bp->b_resid = 0; } /* 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; register s = splbio(); if (cd->flags & MCDMBXBSY) { splx(s); 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->b_actf; /* changed from: 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"); return; } p = cd->dlabel.d_partitions + mcd_part(bp->b_dev); cd->flags |= MCDMBXBSY; if (cd->partflags[mcd_part(bp->b_dev)] & MCDREADRAW) cd->flags |= MCDREADRAW; 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 proc *p) { struct mcd_data *cd; int unit,part; unit = mcd_unit(dev); part = mcd_part(dev); cd = mcd_data + unit; if (mcd_getstat(unit, 1) == -1) /* detect disk change too */ return EIO; MCD_TRACE("ioctl called 0x%x\n", cmd); switch (cmd) { case DIOCSBAD: if (!(cd->flags & MCDVALID)) return ENXIO; return EINVAL; case DIOCGDINFO: if (!(cd->flags & MCDVALID)) return ENXIO; *(struct disklabel *) addr = cd->dlabel; return 0; case DIOCGPART: if (!(cd->flags & MCDVALID)) return ENXIO; ((struct partinfo *) addr)->disklab = &cd->dlabel; ((struct partinfo *) addr)->part = &cd->dlabel.d_partitions[mcd_part(dev)]; return 0; /* * a bit silly, but someone might want to test something on a * section of cdrom. */ case DIOCWDINFO: case DIOCSDINFO: if (!(cd->flags & MCDVALID)) return ENXIO; if ((flags & FWRITE) == 0) return EBADF; else { return setdisklabel(&cd->dlabel, (struct disklabel *) addr, 0); } case DIOCWLABEL: if (!(cd->flags & MCDVALID)) return ENXIO; return EBADF; case CDIOCPLAYTRACKS: if (!(cd->flags & MCDVALID)) return ENXIO; return mcd_playtracks(unit, (struct ioc_play_track *) addr); case CDIOCPLAYBLOCKS: if (!(cd->flags & MCDVALID)) return ENXIO; return EINVAL; case CDIOCPLAYMSF: if (!(cd->flags & MCDVALID)) return ENXIO; return mcd_playmsf(unit, (struct ioc_play_msf *) addr); case CDIOCREADSUBCHANNEL: if (!(cd->flags & MCDVALID)) return ENXIO; return mcd_subchan(unit, (struct ioc_read_subchannel *) addr); case CDIOREADTOCHEADER: if (!(cd->flags & MCDVALID)) return ENXIO; return mcd_toc_header(unit, (struct ioc_toc_header *) addr); case CDIOREADTOCENTRYS: if (!(cd->flags & MCDVALID)) return ENXIO; return mcd_toc_entrys(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: if (!(cd->flags & MCDVALID)) return ENXIO; return mcd_resume(unit); case CDIOCPAUSE: if (!(cd->flags & MCDVALID)) return ENXIO; return mcd_pause(unit); case CDIOCSTART: if (!(cd->flags & MCDVALID)) return ENXIO; return EINVAL; case CDIOCSTOP: if (!(cd->flags & MCDVALID)) return ENXIO; return mcd_stop(unit); case CDIOCEJECT: return mcd_eject(unit); case CDIOCSETDEBUG: cd->debug = 1; return 0; case CDIOCCLRDEBUG: cd->debug = 0; return 0; case CDIOCRESET: return mcd_hard_reset(unit); case CDIOCALLOW: return mcd_lock_door(unit, MCD_LK_UNLOCK); default: return ENOTTY; } /*NOTREACHED*/ } /* 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)); /* 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 |= 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 #ifdef NOT_YET static void mcd_configure(struct mcd_data *cd) { outb(cd->iobase+mcd_config,cd->config); } #endif /* Wait for non-busy - return 0 on timeout */ static int twiddle_thumbs(int port, int unit, int count, char *whine) { int i; for (i = 0; i < count; i++) { if (!(inb(port+MCD_FLAGS) & MFL_STATUS_NOT_AVAIL)) return 1; } printf("mcd%d: timeout %s\n", unit, whine); return 0; } /* check to see if a Mitsumi CD-ROM is attached to the ISA bus */ int mcd_probe(struct isa_device *dev) { int port = dev->id_iobase; int unit = dev->id_unit; int i, j; unsigned char stbytes[3]; mcd_registerdev(dev); 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, M_RESET); /* * delay awhile by getting any pending garbage (old data) and * throwing it away. */ for (i = 1000000; i != 0; i--) inb(port+MCD_FLAGS); /* Get status */ outb(port+MCD_DATA, MCD_CMDGETSTAT); if (!twiddle_thumbs(port, unit, 1000000, "getting status")) return 0; /* Timeout */ /* Get version information */ outb(port+MCD_DATA, MCD_CMDCONTINFO); for (j = 0; j < 3; j++) { if (!twiddle_thumbs(port, unit, 3000, "getting version info")) return 0; stbytes[j] = (inb(port+MCD_DATA) & 0xFF); } if (stbytes[1] == stbytes[2]) return 0; if (stbytes[2] >= 4 || stbytes[1] != 'M') { outb(port+MCD_CTRL, M_PICKLE); mcd_data[unit].flags |= MCDNEWMODEL; } mcd_data[unit].read_command = MCD_CMDSINGLESPEEDREAD; switch (stbytes[1]) { case 'M': if (mcd_data[unit].flags & MCDNEWMODEL) { mcd_data[unit].type = MCD_TYPE_LU005S; mcd_data[unit].name = "Mitsumi LU005S"; } else { mcd_data[unit].type = MCD_TYPE_LU002S; mcd_data[unit].name = "Mitsumi LU002S"; } break; case 'F': mcd_data[unit].type = MCD_TYPE_FX001; mcd_data[unit].name = "Mitsumi FX001"; break; case 'D': mcd_data[unit].type = MCD_TYPE_FX001D; mcd_data[unit].name = "Mitsumi FX001D"; mcd_data[unit].read_command = MCD_CMDDOUBLESPEEDREAD; break; default: mcd_data[unit].type = MCD_TYPE_UNKNOWN; mcd_data[unit].name = "Mitsumi ???"; break; } printf("mcd%d: type %s, version info: %c %x\n", unit, mcd_data[unit].name, stbytes[1], stbytes[2]); return 4; } static int mcd_waitrdy(int port,int dly) { int i; /* wait until flag port senses status ready */ for (i=0; iiobase; /* wait data to become ready */ if (mcd_waitrdy(port,dly)<0) { printf("mcd%d: timeout getreply\n",unit); 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 || (i & MCD_ST_CMDCHECK)) { cd->curr_mode = MCD_MD_UNKNOWN; return -1; } cd->status = i; if (mcd_setflags(unit,cd) < 0) return -2; return cd->status; } static int mcd_setflags(int unit, struct mcd_data *cd) { /* check flags */ if ( (cd->status & (MCDDSKCHNG|MCDDOOROPEN)) || !(cd->status & MCDDSKIN)) { MCD_TRACE("setflags: sensed DSKCHNG or DOOROPEN or !DSKIN\n"); mcd_soft_reset(unit); return -1; } 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; return 0; } static int mcd_get(int unit, char *buf, int nmax) { int i,k; for (i=0; i> 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; /* Just return if we already have it */ if (cd->flags & MCDVOLINFO) return 0; /*MCD_TRACE("mcd_volinfo: enter\n",0,0,0,0);*/ /* send volume info command */ if (mcd_send(unit,MCD_CMDGETVOLINFO,MCD_RETRYS) < 0) return EIO; /* 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 EIO; } if (cd->volinfo.trk_low > 0 && cd->volinfo.trk_high >= cd->volinfo.trk_low ) { cd->flags |= MCDVOLINFO; /* volinfo is OK */ return 0; } return EINVAL; } void mcdintr(unit) int unit; { MCD_TRACE("stray interrupt\n"); } /* 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; int com_port = mbx->port + mcd_command; int data_port = mbx->port + mcd_rdata; 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: retry_status: /* get status */ outb(com_port, MCD_CMDGETSTAT); mbx->count = RDELAY_WAITSTAT; timeout((timeout_func_t)mcd_doread, (caddr_t)MCD_S_WAITSTAT,hz/100); /* XXX */ return; case MCD_S_WAITSTAT: untimeout((timeout_func_t)mcd_doread,(caddr_t)MCD_S_WAITSTAT); if (mbx->count-- >= 0) { if (inb(port+MCD_FLAGS) & MFL_STATUS_NOT_AVAIL) { timeout((timeout_func_t)mcd_doread, (caddr_t)MCD_S_WAITSTAT,hz/100); /* XXX */ return; } cd->status = inb(port+mcd_status) & 0xFF; if (cd->status & MCD_ST_CMDCHECK) goto retry_status; if (mcd_setflags(unit,cd) < 0) goto changed; MCD_TRACE("got WAITSTAT delay=%d\n", RDELAY_WAITSTAT-mbx->count); /* reject, if audio active */ if (cd->status & MCDAUDIOBSY) { printf("mcd%d: audio is active\n",unit); goto readerr; } retry_mode: /* 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; } if (rm == cd->curr_mode) goto modedone; mbx->count = RDELAY_WAITMODE; cd->curr_mode = MCD_MD_UNKNOWN; mbx->mode = rm; mcd_put(com_port, MCD_CMDSETMODE); mcd_put(com_port, rm); timeout((timeout_func_t)mcd_doread, (caddr_t)MCD_S_WAITMODE,hz/100); /* XXX */ return; } else { printf("mcd%d: timeout getstatus\n",unit); goto readerr; } case MCD_S_WAITMODE: untimeout((timeout_func_t)mcd_doread,(caddr_t)MCD_S_WAITMODE); if (mbx->count-- < 0) { printf("mcd%d: timeout set mode\n",unit); goto readerr; } if (inb(port+MCD_FLAGS) & MFL_STATUS_NOT_AVAIL) { timeout((timeout_func_t)mcd_doread,(caddr_t)MCD_S_WAITMODE,hz/100); return; } cd->status = inb(port+mcd_status) & 0xFF; if (cd->status & MCD_ST_CMDCHECK) { cd->curr_mode = MCD_MD_UNKNOWN; goto retry_mode; } if (mcd_setflags(unit,cd) < 0) goto changed; cd->curr_mode = mbx->mode; MCD_TRACE("got WAITMODE delay=%d\n", RDELAY_WAITMODE-mbx->count); modedone: /* 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=%p\n", blknum, bp); /* build parameter block */ hsg2msf(blknum,rbuf.start_msf); retry_read: /* send the read command */ disable_intr(); mcd_put(com_port,cd->read_command); mcd_put(com_port,rbuf.start_msf[0]); mcd_put(com_port,rbuf.start_msf[1]); mcd_put(com_port,rbuf.start_msf[2]); mcd_put(com_port,0); mcd_put(com_port,0); mcd_put(com_port,1); enable_intr(); /* Spin briefly (<= 2ms) to avoid missing next block */ for (i = 0; i < 20; i++) { k = inb(port+MCD_FLAGS); if (!(k & MFL_DATA_NOT_AVAIL)) goto got_it; DELAY(100); } mbx->count = RDELAY_WAITREAD; timeout((timeout_func_t)mcd_doread, (caddr_t)MCD_S_WAITREAD,hz/100); /* XXX */ return; case MCD_S_WAITREAD: untimeout((timeout_func_t)mcd_doread,(caddr_t)MCD_S_WAITREAD); if (mbx->count-- > 0) { k = inb(port+MCD_FLAGS); if (!(k & MFL_DATA_NOT_AVAIL)) { /* XXX */ MCD_TRACE("got data delay=%d\n", RDELAY_WAITREAD-mbx->count); got_it: /* data is ready */ addr = bp->b_un.b_addr + mbx->skip; outb(port+mcd_ctl2,0x04); /* XXX */ for (i=0; isz; i++) *addr++ = inb(data_port); outb(port+mcd_ctl2,0x0c); /* XXX */ k = inb(port+MCD_FLAGS); /* If we still have some junk, read it too */ if (!(k & MFL_DATA_NOT_AVAIL)) { outb(port+mcd_ctl2,0x04); /* XXX */ (void)inb(data_port); (void)inb(data_port); 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|MCDREADRAW); mcd_start(mbx->unit); return; } if (!(k & MFL_STATUS_NOT_AVAIL)) { cd->status = inb(port+mcd_status) & 0xFF; if (cd->status & MCD_ST_CMDCHECK) goto retry_read; if (mcd_setflags(unit,cd) < 0) goto changed; } timeout((timeout_func_t)mcd_doread, (caddr_t)MCD_S_WAITREAD,hz/100); /* XXX */ return; } else { printf("mcd%d: timeout read data\n",unit); goto readerr; } } readerr: if (mbx->retry-- > 0) { printf("mcd%d: retrying\n",unit); state = MCD_S_BEGIN1; goto loop; } harderr: /* invalidate the buffer */ bp->b_flags |= B_ERROR; bp->b_resid = bp->b_bcount; biodone(bp); cd->flags &= ~(MCDMBXBSY|MCDREADRAW); mcd_start(mbx->unit); return; changed: printf("mcd%d: media changed\n", unit); goto harderr; #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 } static int mcd_lock_door(int unit, int lock) { struct mcd_data *cd = mcd_data + unit; int port = cd->iobase; outb(port+mcd_command, MCD_CMDLOCKDRV); outb(port+mcd_command, lock); if (mcd_getstat(unit,0) == -1) return EIO; return 0; } static int mcd_close_tray(int unit) { struct mcd_data *cd = mcd_data + unit; int port = cd->iobase; int retry, r; if (mcd_getstat(unit,1) == -1) return EIO; if (cd->status & MCDDOOROPEN) { outb(port+mcd_command, MCD_CMDCLOSETRAY); for (retry = 0; retry < CLOSE_TRAY_SECS * WAIT_FRAC; retry++) { if (inb(port+MCD_FLAGS) & MFL_STATUS_NOT_AVAIL) (void) tsleep((caddr_t)cd, PSOCK | PCATCH, "mcdcls", hz/WAIT_FRAC); else { if ((r = mcd_getstat(unit,0)) == -1) return EIO; return 0; } } return ENXIO; } return 0; } static int mcd_eject(int unit) { struct mcd_data *cd = mcd_data + unit; int port = cd->iobase, r; if (mcd_getstat(unit,1) == -1) /* detect disk change too */ return EIO; if (cd->status & MCDDOOROPEN) return mcd_close_tray(unit); if ((r = mcd_stop(unit)) == EIO) return r; outb(port+mcd_command, MCD_CMDEJECTDISK); if (mcd_getstat(unit,0) == -1) return EIO; return 0; } static int mcd_hard_reset(int unit) { struct mcd_data *cd = mcd_data + unit; int port = cd->iobase; outb(port+mcd_reset,MCD_CMDRESET); cd->curr_mode = MCD_MD_UNKNOWN; cd->audio_status = CD_AS_AUDIO_INVALID; return 0; } static void mcd_soft_reset(int unit) { struct mcd_data *cd = mcd_data + unit; int i; cd->openflags = 0; cd->flags &= (MCDINIT|MCDPROBING|MCDNEWMODEL); cd->curr_mode = MCD_MD_UNKNOWN; for (i=0; ipartflags[i] = 0; cd->audio_status = CD_AS_AUDIO_INVALID; } static int mcd_setmode(int unit, int mode) { struct mcd_data *cd = mcd_data + unit; int port = cd->iobase; int retry, st; if (cd->curr_mode == mode) return 0; if (cd->debug) printf("mcd%d: setting mode to %d\n", unit, mode); for(retry=0; retrycurr_mode = MCD_MD_UNKNOWN; outb(port+mcd_command, MCD_CMDSETMODE); outb(port+mcd_command, mode); if ((st = mcd_getstat(unit, 0)) >= 0) { cd->curr_mode = mode; return 0; } if (st == -2) { printf("mcd%d: media changed\n", unit); break; } } return -1; } static int mcd_toc_header(int unit, struct ioc_toc_header *th) { struct mcd_data *cd = mcd_data + unit; int r; if ((r = mcd_volinfo(unit)) != 0) return r; 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; if (cd->debug) printf("mcd%d: reading toc header\n", unit); if ((rc = mcd_toc_header(unit, &th)) != 0) return rc; if (mcd_send(unit, MCD_CMDSTOPAUDIO, MCD_RETRYS) < 0) return EIO; if (mcd_setmode(unit, MCD_MD_TOC) != 0) return EIO; if (cd->debug) 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<600 && trk>0; retry++) { if (mcd_getqchan(unit, &q) < 0) break; idx = bcd2bin(q.idx_no); if (idx>=th.starting_track && idx<=th.ending_track && 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]; if (cd->debug) { int i; for (i = th.starting_track; i <= idx; i++) printf("mcd%d: trk %d idx %d pos %d %d %d\n", unit, i, cd->toc[i].idx_no, bcd2bin(cd->toc[i].hd_pos_msf[0]), bcd2bin(cd->toc[i].hd_pos_msf[1]), bcd2bin(cd->toc[i].hd_pos_msf[2])); } cd->flags |= MCDTOC; return 0; } static int mcd_toc_entrys(int unit, struct ioc_read_toc_entry *te) { struct mcd_data *cd = mcd_data + unit; struct cd_toc_entry entries[MCD_MAXTOCS]; struct ioc_toc_header th; int rc, i, len = te->data_len; /* 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 ( len > sizeof(entries) || len < sizeof(struct cd_toc_entry) || (len % sizeof(struct cd_toc_entry)) != 0 ) return EINVAL; /* Copy the toc header */ if ((rc = mcd_toc_header(unit, &th)) != 0) return rc; do { /* copy the toc data */ entries[i-1].control = cd->toc[i].ctrl_adr; entries[i-1].addr_type = te->address_format; entries[i-1].track = i; if (te->address_format == CD_MSF_FORMAT) { entries[i-1].addr.msf.unused = 0; entries[i-1].addr.msf.minute = bcd2bin(cd->toc[i].hd_pos_msf[0]); entries[i-1].addr.msf.second = bcd2bin(cd->toc[i].hd_pos_msf[1]); entries[i-1].addr.msf.frame = bcd2bin(cd->toc[i].hd_pos_msf[2]); } len -= sizeof(struct cd_toc_entry); i++; } while (len > 0 && i <= th.ending_track + 2); /* copy the data back */ if (copyout(entries, te->data, (i - 1) * sizeof(struct cd_toc_entry)) != 0) return EFAULT; return 0; } static int mcd_stop(int unit) { struct mcd_data *cd = mcd_data + unit; /* Verify current status */ if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS && cd->audio_status != CD_AS_PLAY_PAUSED) { if (cd->debug) printf("mcd%d: stop attempted when not playing\n", unit); return EINVAL; } if (cd->audio_status == CD_AS_PLAY_IN_PROGRESS) if (mcd_send(unit, MCD_CMDSTOPAUDIO, MCD_RETRYS) < 0) return EIO; 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: getqchan ctrl_adr=0x%x trk=%d ind=%d ttm=%d:%d.%d dtm=%d:%d.%d\n", unit, q->ctrl_adr, bcd2bin(q->trk_no), bcd2bin(q->idx_no), bcd2bin(q->trk_size_msf[0]), bcd2bin(q->trk_size_msf[1]), bcd2bin(q->trk_size_msf[2]), bcd2bin(q->hd_pos_msf[0]), bcd2bin(q->hd_pos_msf[1]), bcd2bin(q->hd_pos_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; if (cd->debug) printf("mcd%d: subchan af=%d, df=%d\n", unit, sc->address_format, sc->data_format); if (sc->address_format != CD_MSF_FORMAT && sc->address_format != CD_LBA_FORMAT) return EINVAL; if (sc->data_format != CD_CURRENT_POSITION) return EINVAL; if (mcd_setmode(unit, MCD_MD_COOKED) != 0) return EIO; if (mcd_getqchan(unit, &q) < 0) return EIO; data.header.audio_status = cd->audio_status; data.what.position.data_format = CD_CURRENT_POSITION; data.what.position.addr_type = q.ctrl_adr; data.what.position.control = q.ctrl_adr >> 4; data.what.position.track_number = bcd2bin(q.trk_no); data.what.position.index_number = bcd2bin(q.idx_no); if (sc->address_format == CD_MSF_FORMAT) { data.what.position.reladdr.msf.unused = 0; data.what.position.reladdr.msf.minute = bcd2bin(q.trk_size_msf[0]); data.what.position.reladdr.msf.second = bcd2bin(q.trk_size_msf[1]); data.what.position.reladdr.msf.frame = bcd2bin(q.trk_size_msf[2]); data.what.position.absaddr.msf.unused = 0; data.what.position.absaddr.msf.minute = bcd2bin(q.hd_pos_msf[0]); data.what.position.absaddr.msf.second = bcd2bin(q.hd_pos_msf[1]); data.what.position.absaddr.msf.frame = bcd2bin(q.hd_pos_msf[2]); } else if (sc->address_format == CD_LBA_FORMAT) { data.what.position.reladdr.lba = msf2hsg(q.trk_size_msf); data.what.position.absaddr.lba = msf2hsg(q.hd_pos_msf); } if (copyout(&data, sc->data, min(sizeof(struct cd_sub_channel_info), sc->data_len))!=0) return EFAULT; return 0; } static int mcd_playmsf(int unit, struct ioc_play_msf *pt) { struct mcd_read2 pb; if (mcd_setmode(unit, MCD_MD_COOKED) != 0) return EIO; pb.start_msf[0] = bin2bcd(pt->start_m); pb.start_msf[1] = bin2bcd(pt->start_s); pb.start_msf[2] = bin2bcd(pt->start_f); pb.end_msf[0] = bin2bcd(pt->end_m); pb.end_msf[1] = bin2bcd(pt->end_s); pb.end_msf[2] = bin2bcd(pt->end_f); return mcd_play(unit, &pb); } 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, i; if ((rc = mcd_read_toc(unit)) != 0) return rc; if (cd->debug) printf("mcd%d: playtracks from %d:%d to %d:%d\n", unit, a, pt->start_index, z, pt->end_index); if ( a < bcd2bin(cd->volinfo.trk_low) || a > bcd2bin(cd->volinfo.trk_high) || a > z || z < bcd2bin(cd->volinfo.trk_low) || z > bcd2bin(cd->volinfo.trk_high)) return EINVAL; for (i = 0; i < 3; i++) { pb.start_msf[i] = cd->toc[a].hd_pos_msf[i]; pb.end_msf[i] = cd->toc[z+1].hd_pos_msf[i]; } return mcd_play(unit, &pb); } static int mcd_play(int unit, struct mcd_read2 *pb) { struct mcd_data *cd = mcd_data + unit; int com_port = cd->iobase + mcd_command; int retry, st = -1, status; cd->lastpb = *pb; for(retry=0; retrystart_msf[0]); outb(com_port, pb->start_msf[1]); outb(com_port, pb->start_msf[2]); outb(com_port, pb->end_msf[0]); outb(com_port, pb->end_msf[1]); outb(com_port, pb->end_msf[2]); enable_intr(); status=mcd_getstat(unit, 0); if (status == -1) continue; else if (status != -2) st = 0; break; } if (status == -2) { printf("mcd%d: media changed\n", unit); return ENXIO; } if (cd->debug) printf("mcd%d: mcd_play retry=%d, status=0x%02x\n", unit, retry, status); if (st < 0) 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) { if (cd->debug) 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); } static mcd_devsw_installed = 0; static void mcd_drvinit(void *unused) { dev_t dev; if( ! mcd_devsw_installed ) { dev = makedev(CDEV_MAJOR,0); cdevsw_add(&dev,&mcd_cdevsw,NULL); dev = makedev(BDEV_MAJOR,0); bdevsw_add(&dev,&mcd_bdevsw,NULL); mcd_devsw_installed = 1; } } SYSINIT(mcddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,mcd_drvinit,NULL) #endif /* NMCD > 0 */