1264 lines
30 KiB
C
1264 lines
30 KiB
C
/*
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* Copyright 1993 by Holger Veit (data part)
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* Copyright 1993 by Brian Moore (audio part)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This software was developed by Holger Veit and Brian Moore
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* for use with "386BSD" and similar operating systems.
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* "Similar operating systems" includes mainly non-profit oriented
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* systems for research and education, including but not restricted to
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* "NetBSD", "FreeBSD", "Mach" (by CMU).
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* 4. Neither the name of the developer(s) nor the name "386BSD"
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPER(S) ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE DEVELOPER(S) BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: mcd.c,v 1.2 1993/10/16 13:46:13 rgrimes Exp $
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*/
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static char COPYRIGHT[] = "mcd-driver (C)1993 by H.Veit & B.Moore";
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#include "mcd.h"
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#if NMCD > 0
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#include "types.h"
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#include "param.h"
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#include "systm.h"
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#include "conf.h"
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#include "file.h"
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#include "buf.h"
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#include "stat.h"
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#include "uio.h"
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#include "ioctl.h"
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#include "cdio.h"
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#include "errno.h"
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#include "dkbad.h"
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#include "disklabel.h"
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#include "i386/isa/isa.h"
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#include "i386/isa/isa_device.h"
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#include "mcdreg.h"
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/* user definable options */
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/*#define MCD_TO_WARNING_ON*/ /* define to get timeout messages */
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/*#define MCDMINI*/ /* define for a mini configuration for boot kernel */
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#ifdef MCDMINI
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#define MCD_TRACE(fmt,a,b,c,d)
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#ifdef MCD_TO_WARNING_ON
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#undef MCD_TO_WARNING_ON
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#endif
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#else
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#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);}}
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#endif
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#define mcd_part(dev) ((minor(dev)) & 7)
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#define mcd_unit(dev) (((minor(dev)) & 0x38) >> 3)
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#define mcd_phys(dev) (((minor(dev)) & 0x40) >> 6)
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#define RAW_PART 3
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/* flags */
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#define MCDOPEN 0x0001 /* device opened */
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#define MCDVALID 0x0002 /* parameters loaded */
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#define MCDINIT 0x0004 /* device is init'd */
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#define MCDWAIT 0x0008 /* waiting for something */
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#define MCDLABEL 0x0010 /* label is read */
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#define MCDPROBING 0x0020 /* probing */
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#define MCDREADRAW 0x0040 /* read raw mode (2352 bytes) */
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#define MCDVOLINFO 0x0080 /* already read volinfo */
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#define MCDTOC 0x0100 /* already read toc */
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#define MCDMBXBSY 0x0200 /* local mbx is busy */
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/* status */
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#define MCDAUDIOBSY MCD_ST_AUDIOBSY /* playing audio */
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#define MCDDSKCHNG MCD_ST_DSKCHNG /* sensed change of disk */
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#define MCDDSKIN MCD_ST_DSKIN /* sensed disk in drive */
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#define MCDDOOROPEN MCD_ST_DOOROPEN /* sensed door open */
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/* toc */
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#define MCD_MAXTOCS 104 /* from the Linux driver */
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#define MCD_LASTPLUS1 170 /* special toc entry */
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struct mcd_mbx {
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short unit;
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short port;
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short retry;
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short nblk;
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int sz;
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u_long skip;
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struct buf *bp;
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int p_offset;
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short count;
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};
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struct mcd_data {
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short config;
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short flags;
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short status;
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int blksize;
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u_long disksize;
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int iobase;
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struct disklabel dlabel;
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int partflags[MAXPARTITIONS];
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int openflags;
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struct mcd_volinfo volinfo;
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#ifndef MCDMINI
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struct mcd_qchninfo toc[MCD_MAXTOCS];
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short audio_status;
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struct mcd_read2 lastpb;
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#endif
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short debug;
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struct buf head; /* head of buf queue */
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struct mcd_mbx mbx;
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} mcd_data[NMCD];
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/* reader state machine */
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#define MCD_S_BEGIN 0
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#define MCD_S_BEGIN1 1
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#define MCD_S_WAITSTAT 2
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#define MCD_S_WAITMODE 3
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#define MCD_S_WAITREAD 4
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/* prototypes */
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int mcdopen(dev_t dev);
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int mcdclose(dev_t dev);
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void mcdstrategy(struct buf *bp);
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int mcdioctl(dev_t dev, int cmd, caddr_t addr, int flags);
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int mcdsize(dev_t dev);
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static void mcd_done(struct mcd_mbx *mbx);
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static void mcd_start(int unit);
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static int mcd_getdisklabel(int unit);
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static void mcd_configure(struct mcd_data *cd);
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static int mcd_get(int unit, char *buf, int nmax);
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static void mcd_setflags(int unit,struct mcd_data *cd);
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static int mcd_getstat(int unit,int sflg);
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static int mcd_send(int unit, int cmd,int nretrys);
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static int bcd2bin(bcd_t b);
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static bcd_t bin2bcd(int b);
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static void hsg2msf(int hsg, bcd_t *msf);
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static int msf2hsg(bcd_t *msf);
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static int mcd_volinfo(int unit);
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static int mcd_waitrdy(int port,int dly);
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static void mcd_doread(int state, struct mcd_mbx *mbxin);
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#ifndef MCDMINI
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static int mcd_setmode(int unit, int mode);
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static int mcd_getqchan(int unit, struct mcd_qchninfo *q);
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static int mcd_subchan(int unit, struct ioc_read_subchannel *sc);
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static int mcd_toc_header(int unit, struct ioc_toc_header *th);
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static int mcd_read_toc(int unit);
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static int mcd_toc_entry(int unit, struct ioc_read_toc_entry *te);
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static int mcd_stop(int unit);
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static int mcd_playtracks(int unit, struct ioc_play_track *pt);
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static int mcd_play(int unit, struct mcd_read2 *pb);
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static int mcd_pause(int unit);
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static int mcd_resume(int unit);
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#endif
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extern int hz;
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extern int mcd_probe(struct isa_device *dev);
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extern int mcd_attach(struct isa_device *dev);
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struct isa_driver mcddriver = { mcd_probe, mcd_attach, "mcd" };
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#define mcd_put(port,byte) outb(port,byte)
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#define MCD_RETRYS 5
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#define MCD_RDRETRYS 8
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#define MCDBLK 2048 /* for cooked mode */
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#define MCDRBLK 2352 /* for raw mode */
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/* several delays */
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#define RDELAY_WAITSTAT 300
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#define RDELAY_WAITMODE 300
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#define RDELAY_WAITREAD 800
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#define DELAY_STATUS 10000l /* 10000 * 1us */
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#define DELAY_GETREPLY 200000l /* 200000 * 2us */
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#define DELAY_SEEKREAD 20000l /* 20000 * 1us */
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#define mcd_delay DELAY
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int mcd_attach(struct isa_device *dev)
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{
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struct mcd_data *cd = mcd_data + dev->id_unit;
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int i;
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cd->iobase = dev->id_iobase;
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cd->flags |= MCDINIT;
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cd->openflags = 0;
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for (i=0; i<MAXPARTITIONS; i++) cd->partflags[i] = 0;
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#ifdef NOTYET
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/* wire controller for interrupts and dma */
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mcd_configure(cd);
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#endif
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return 1;
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}
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int mcdopen(dev_t dev)
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{
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int unit,part,phys;
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struct mcd_data *cd;
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unit = mcd_unit(dev);
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if (unit >= NMCD)
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return ENXIO;
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cd = mcd_data + unit;
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part = mcd_part(dev);
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phys = mcd_phys(dev);
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/* not initialized*/
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if (!(cd->flags & MCDINIT))
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return ENXIO;
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/* invalidated in the meantime? mark all open part's invalid */
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if (!(cd->flags & MCDVALID) && cd->openflags)
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return ENXIO;
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if (mcd_getstat(unit,1) < 0)
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return ENXIO;
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/* XXX get a default disklabel */
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mcd_getdisklabel(unit);
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if (mcdsize(dev) < 0) {
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printf("mcd%d: failed to get disk size\n",unit);
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return ENXIO;
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} else
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cd->flags |= MCDVALID;
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MCD_TRACE("open: partition=%d, disksize = %d, blksize=%d\n",
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part,cd->disksize,cd->blksize,0);
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if (part == RAW_PART ||
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(part < cd->dlabel.d_npartitions &&
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cd->dlabel.d_partitions[part].p_fstype != FS_UNUSED)) {
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cd->partflags[part] |= MCDOPEN;
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cd->openflags |= (1<<part);
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if (part == RAW_PART && phys != 0)
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cd->partflags[part] |= MCDREADRAW;
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return 0;
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}
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return ENXIO;
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}
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int mcdclose(dev_t dev)
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{
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int unit,part,phys;
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struct mcd_data *cd;
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unit = mcd_unit(dev);
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if (unit >= NMCD)
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return ENXIO;
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cd = mcd_data + unit;
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part = mcd_part(dev);
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phys = mcd_phys(dev);
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if (!(cd->flags & MCDINIT))
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return ENXIO;
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mcd_getstat(unit,1); /* get status */
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/* close channel */
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cd->partflags[part] &= ~(MCDOPEN|MCDREADRAW);
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cd->openflags &= ~(1<<part);
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MCD_TRACE("close: partition=%d\n",part,0,0,0);
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return 0;
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}
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void
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mcdstrategy(struct buf *bp)
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{
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struct mcd_data *cd;
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struct buf *qp;
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int s;
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int unit = mcd_unit(bp->b_dev);
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cd = mcd_data + unit;
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/* test validity */
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/*MCD_TRACE("strategy: buf=0x%lx, unit=%ld, block#=%ld bcount=%ld\n",
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bp,unit,bp->b_blkno,bp->b_bcount);*/
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if (unit >= NMCD || bp->b_blkno < 0) {
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printf("mcdstrategy: unit = %d, blkno = %d, bcount = %d\n",
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unit, bp->b_blkno, bp->b_bcount);
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pg("mcd: mcdstratregy failure");
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bp->b_error = EINVAL;
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bp->b_flags |= B_ERROR;
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goto bad;
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}
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/* if device invalidated (e.g. media change, door open), error */
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if (!(cd->flags & MCDVALID)) {
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MCD_TRACE("strategy: drive not valid\n",0,0,0,0);
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bp->b_error = EIO;
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goto bad;
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}
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/* read only */
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if (!(bp->b_flags & B_READ)) {
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bp->b_error = EROFS;
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goto bad;
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}
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/* no data to read */
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if (bp->b_bcount == 0)
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goto done;
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/* for non raw access, check partition limits */
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if (mcd_part(bp->b_dev) != RAW_PART) {
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if (!(cd->flags & MCDLABEL)) {
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bp->b_error = EIO;
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goto bad;
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}
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/* adjust transfer if necessary */
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if (bounds_check_with_label(bp,&cd->dlabel,1) <= 0) {
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goto done;
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}
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}
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/* queue it */
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qp = &cd->head;
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s = splbio();
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disksort(qp,bp);
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splx(s);
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/* now check whether we can perform processing */
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mcd_start(unit);
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return;
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bad:
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bp->b_flags |= B_ERROR;
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done:
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bp->b_resid = bp->b_bcount;
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biodone(bp);
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return;
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}
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static void mcd_start(int unit)
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{
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struct mcd_data *cd = mcd_data + unit;
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struct buf *bp, *qp = &cd->head;
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struct partition *p;
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int part;
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register s = splbio();
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if (cd->flags & MCDMBXBSY)
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return;
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if ((bp = qp->b_actf) != 0) {
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/* block found to process, dequeue */
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/*MCD_TRACE("mcd_start: found block bp=0x%x\n",bp,0,0,0);*/
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qp->b_actf = bp->av_forw;
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splx(s);
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} else {
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/* nothing to do */
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splx(s);
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return;
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}
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/* changed media? */
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if (!(cd->flags & MCDVALID)) {
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MCD_TRACE("mcd_start: drive not valid\n",0,0,0,0);
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return;
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}
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p = cd->dlabel.d_partitions + mcd_part(bp->b_dev);
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cd->flags |= MCDMBXBSY;
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cd->mbx.unit = unit;
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cd->mbx.port = cd->iobase;
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cd->mbx.retry = MCD_RETRYS;
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cd->mbx.bp = bp;
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cd->mbx.p_offset = p->p_offset;
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/* calling the read routine */
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mcd_doread(MCD_S_BEGIN,&(cd->mbx));
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/* triggers mcd_start, when successful finished */
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return;
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}
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int mcdioctl(dev_t dev, int cmd, caddr_t addr, int flags)
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{
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struct mcd_data *cd;
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int unit,part;
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unit = mcd_unit(dev);
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part = mcd_part(dev);
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cd = mcd_data + unit;
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#ifdef MCDMINI
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return ENOTTY;
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#else
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if (!(cd->flags & MCDVALID))
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return EIO;
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MCD_TRACE("ioctl called 0x%x\n",cmd,0,0,0);
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switch (cmd) {
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case DIOCSBAD:
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return EINVAL;
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case DIOCGDINFO:
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case DIOCGPART:
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case DIOCWDINFO:
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case DIOCSDINFO:
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case DIOCWLABEL:
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return ENOTTY;
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case CDIOCPLAYTRACKS:
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return mcd_playtracks(unit, (struct ioc_play_track *) addr);
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case CDIOCPLAYBLOCKS:
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return mcd_play(unit, (struct mcd_read2 *) addr);
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case CDIOCREADSUBCHANNEL:
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return mcd_subchan(unit, (struct ioc_read_subchannel *) addr);
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case CDIOREADTOCHEADER:
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return mcd_toc_header(unit, (struct ioc_toc_header *) addr);
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case CDIOREADTOCENTRYS:
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return mcd_toc_entry(unit, (struct ioc_read_toc_entry *) addr);
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case CDIOCSETPATCH:
|
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case CDIOCGETVOL:
|
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case CDIOCSETVOL:
|
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case CDIOCSETMONO:
|
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case CDIOCSETSTERIO:
|
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case CDIOCSETMUTE:
|
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case CDIOCSETLEFT:
|
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case CDIOCSETRIGHT:
|
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return EINVAL;
|
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case CDIOCRESUME:
|
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return mcd_resume(unit);
|
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case CDIOCPAUSE:
|
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return mcd_pause(unit);
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case CDIOCSTART:
|
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return EINVAL;
|
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case CDIOCSTOP:
|
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return mcd_stop(unit);
|
|
case CDIOCEJECT:
|
|
return EINVAL;
|
|
case CDIOCSETDEBUG:
|
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cd->debug = 1;
|
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return 0;
|
|
case CDIOCCLRDEBUG:
|
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cd->debug = 0;
|
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return 0;
|
|
case CDIOCRESET:
|
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return EINVAL;
|
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default:
|
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return ENOTTY;
|
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}
|
|
/*NOTREACHED*/
|
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#endif /*!MCDMINI*/
|
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}
|
|
|
|
/* this could have been taken from scsi/cd.c, but it is not clear
|
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* whether the scsi cd driver is linked in
|
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*/
|
|
static int mcd_getdisklabel(int unit)
|
|
{
|
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struct mcd_data *cd = mcd_data + unit;
|
|
|
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if (cd->flags & MCDLABEL)
|
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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;
|
|
}
|
|
|
|
void
|
|
mcdintr(unit)
|
|
int 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((timeout_func_t)mcd_doread,(caddr_t)MCD_S_WAITSTAT,hz/100); /* XXX */
|
|
return;
|
|
case MCD_S_WAITSTAT:
|
|
untimeout(mcd_doread,MCD_S_WAITSTAT);
|
|
if (mbx->count-- >= 0) {
|
|
if (inb(port+mcd_xfer) & MCD_ST_BUSY) {
|
|
timeout((timeout_func_t)mcd_doread,(caddr_t)MCD_S_WAITSTAT,hz/100); /* XXX */
|
|
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((timeout_func_t)mcd_doread,(caddr_t)MCD_S_WAITMODE,hz/100); /* XXX */
|
|
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((timeout_func_t)mcd_doread,(caddr_t)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((timeout_func_t)mcd_doread,(caddr_t)MCD_S_WAITREAD,hz/100); /* XXX */
|
|
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((timeout_func_t)mcd_doread,(caddr_t)MCD_S_WAITREAD,hz/100); /* XXX */
|
|
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 */
|