1531 lines
35 KiB
C
1531 lines
35 KiB
C
/*-
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* Copyright (c) 1995 Mikael Hybsch
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*
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* Portions of this file are copied from mcd.c
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* which has the following copyrights:
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*
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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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* Changes Copyright 1993 by Gary Clark II
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* Changes Copyright (C) 1994 by Andrew A. Chernov
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*
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* Rewrote probe routine to work on newer Mitsumi drives.
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* Additional changes (C) 1994 by Jordan K. Hubbard
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*
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* The Linux driver cdu31a has been used as a reference when writing this
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* code, there fore bringing it under the GNU Public License. The following
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* conditions of redistribution therefore apply:
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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/* $Id: scd.c,v 1.6 1995/02/06 22:35:06 jkh Exp $ */
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/* Please send any comments to micke@dynas.se */
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#define SCD_DEBUG 0
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#include "scd.h"
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#if NSCD > 0
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/file.h>
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#include <sys/buf.h>
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#include <sys/stat.h>
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#include <sys/uio.h>
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#include <sys/ioctl.h>
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#include <sys/cdio.h>
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#include <sys/errno.h>
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#include <sys/dkbad.h>
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#include <sys/disklabel.h>
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#include <sys/devconf.h>
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#include <machine/stdarg.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 <gnu/i386/scdreg.h>
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#define scd_part(dev) ((minor(dev)) & 7)
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#define scd_unit(dev) (((minor(dev)) & 0x38) >> 3)
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#define scd_phys(dev) (((minor(dev)) & 0x40) >> 6)
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#define RAW_PART 2
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/* flags */
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#define SCDOPEN 0x0001 /* device opened */
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#define SCDVALID 0x0002 /* parameters loaded */
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#define SCDINIT 0x0004 /* device is init'd */
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#define SCDPROBING 0x0020 /* probing */
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#define SCDTOC 0x0100 /* already read toc */
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#define SCDMBXBSY 0x0200 /* local mbx is busy */
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#define SCDSPINNING 0x0400 /* drive is spun up */
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#define SCD_S_BEGIN 0
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#define SCD_S_BEGIN1 1
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#define SCD_S_WAITSTAT 2
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#define SCD_S_WAITFIFO 3
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#define SCD_S_WAITSPIN 4
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#define SCD_S_WAITREAD 5
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#define SCD_S_WAITPARAM 6
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#define RDELAY_WAIT 300
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#define RDELAY_WAITREAD 300
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#define SCDBLKSIZE 2048
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#ifdef SCD_DEBUG
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int scd_debuglevel = SCD_DEBUG;
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# define XDEBUG(level, data) {if (scd_debuglevel >= level) printf data;}
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#else
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# define XDEBUG(level, data)
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#endif
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struct scd_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 scd_data {
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int iobase;
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char double_speed;
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char *name;
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short flags;
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int blksize;
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u_long disksize;
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struct disklabel dlabel;
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int openflag;
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struct {
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unsigned char adr :4;
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unsigned char ctl :4; /* xcdplayer needs this */
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unsigned char start_msf[3];
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} toc[MAX_TRACKS];
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short first_track;
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short last_track;
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struct ioc_play_msf last_play;
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short audio_status;
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struct buf head; /* head of buf queue */
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struct scd_mbx mbx;
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} scd_data[NSCD];
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/* prototypes */
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int scdopen(dev_t dev);
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int scdclose(dev_t dev);
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void scdstrategy(struct buf *bp);
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int scdioctl(dev_t dev, int cmd, caddr_t addr, int flags);
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int scdsize(dev_t dev);
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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 void process_attention(unsigned unit);
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static inline void write_control(unsigned port, unsigned data);
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static int waitfor_status_bits(int unit, int bits_set, int bits_clear);
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static int waitfor_attention(int unit);
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static int send_cmd(u_int unit, u_char cmd, u_int nargs, ...);
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static void init_drive(unsigned unit);
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static int spin_up(unsigned unit);
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static int read_toc(dev_t dev);
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static int get_result(u_int unit, int result_len, u_char *result);
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static void print_error(int unit, int errcode);
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static void scd_start(int unit);
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static void scd_doread(int state, struct scd_mbx *mbxin);
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static int scd_eject(int unit);
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static int scd_stop(int unit);
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static int scd_pause(int unit);
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static int scd_resume(int unit);
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static int scd_playtracks(int unit, struct ioc_play_track *pt);
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static int scd_playmsf(int unit, struct ioc_play_msf *msf);
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static int scd_play(int unit, struct ioc_play_msf *msf);
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static int scd_subchan(int unit, struct ioc_read_subchannel *sc);
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static int read_subcode(int unit, struct sony_subchannel_position_data *sc);
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/* for xcdplayer */
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static int scd_toc_header(int unit, struct ioc_toc_header *th);
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static int scd_toc_entrys(int unit, struct ioc_read_toc_entry *te);
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#define SCD_LASTPLUS1 170 /* don't ask, xcdplayer passes this in */
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extern int hz;
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int scd_probe(struct isa_device *dev);
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int scd_attach(struct isa_device *dev);
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struct isa_driver scddriver = { scd_probe, scd_attach, "scd" };
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static struct kern_devconf kdc_scd[NSCD] = { {
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0, 0, 0, /* filled in by dev_attach */
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"scd", 0, { MDDT_ISA, 0, "bio" },
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isa_generic_externalize, 0, 0, ISA_EXTERNALLEN,
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&kdc_isa0, /* parent */
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0, /* parentdata */
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DC_IDLE, /* status */
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"Sony CD-ROM drive" /* properly filled later */
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} };
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static inline void
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scd_registerdev(struct isa_device *id)
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{
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if(id->id_unit)
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kdc_scd[id->id_unit] = kdc_scd[0];
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kdc_scd[id->id_unit].kdc_unit = id->id_unit;
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kdc_scd[id->id_unit].kdc_isa = id;
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dev_attach(&kdc_scd[id->id_unit]);
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}
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int scd_attach(struct isa_device *dev)
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{
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struct scd_data *cd = scd_data + dev->id_unit;
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int i;
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cd->iobase = dev->id_iobase; /* Already set by probe, but ... */
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scd_registerdev(dev);
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/* name filled in probe */
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kdc_scd[dev->id_unit].kdc_description = scd_data[dev->id_unit].name;
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printf("scd%d: <%s>\n", dev->id_unit, scd_data[dev->id_unit].name);
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init_drive(dev->id_unit);
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cd->flags = SCDINIT;
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cd->audio_status = CD_AS_AUDIO_INVALID;
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return 1;
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}
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int
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scdopen(dev_t dev)
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{
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int unit,part,phys;
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int rc;
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struct scd_data *cd;
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unit = scd_unit(dev);
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if (unit >= NSCD)
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return ENXIO;
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cd = scd_data + unit;
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part = scd_part(dev);
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phys = scd_phys(dev);
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/* not initialized*/
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if (!(cd->flags & SCDINIT))
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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->openflag)
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return ENXIO;
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XDEBUG(1,("scd%d: DEBUG: status = 0x%x\n", unit, inb(cd->iobase+IREG_STATUS)));
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if ((rc = spin_up(unit)) != 0) {
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print_error(unit, rc);
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return EIO;
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}
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if (!(cd->flags & SCDTOC)) {
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int loop_count = 3;
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while (loop_count-- > 0 && (rc = read_toc(dev)) != 0) {
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if (rc == ERR_NOT_SPINNING) {
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rc = spin_up(unit);
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if (rc) {
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print_error(unit, rc);\
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return EIO;
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}
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continue;
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}
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printf("scd%d: TOC read error 0x%x\n", unit, rc);
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return EIO;
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}
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}
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cd->openflag = 1;
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cd->flags |= SCDVALID;
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kdc_scd[unit].kdc_state = DC_BUSY;
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return 0;
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}
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int
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scdclose(dev_t dev)
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{
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int unit,part,phys;
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struct scd_data *cd;
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int rlen;
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char rdata[10];
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unit = scd_unit(dev);
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if (unit >= NSCD)
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return ENXIO;
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cd = scd_data + unit;
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part = scd_part(dev);
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phys = scd_phys(dev);
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if (!(cd->flags & SCDINIT) || !cd->openflag)
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return ENXIO;
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if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS) {
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(void)send_cmd(unit, CMD_SPIN_DOWN, 0);
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cd->flags &= ~SCDSPINNING;
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}
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kdc_scd[unit].kdc_state = DC_IDLE;
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/* close channel */
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cd->openflag = 0;
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return 0;
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}
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void
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scdstrategy(struct buf *bp)
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{
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struct scd_data *cd;
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struct buf *qp;
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int s;
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int unit = scd_unit(bp->b_dev);
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cd = scd_data + unit;
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XDEBUG(2, ("scd%d: DEBUG: strategy: block=%ld, bcount=%ld\n", unit, bp->b_blkno, bp->b_bcount));
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if (unit >= NSCD || bp->b_blkno < 0 || (bp->b_bcount % SCDBLKSIZE)) {
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printf("scd%d: strategy failure: blkno = %d, bcount = %d\n",
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unit, bp->b_blkno, bp->b_bcount);
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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 & SCDVALID)) {
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printf("scd%d: media changed\n", unit);
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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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if (!(cd->flags & SCDTOC)) {
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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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bp->b_pblkno = bp->b_blkno;
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bp->b_resid = 0;
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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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scd_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
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scd_start(int unit)
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{
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struct scd_data *cd = scd_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 & SCDMBXBSY) {
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splx(s);
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return;
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}
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if ((bp = qp->b_actf) != 0) {
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/* block found to process, dequeue */
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qp->b_actf = bp->b_actf;
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cd->flags |= SCDMBXBSY;
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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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p = cd->dlabel.d_partitions + scd_part(bp->b_dev);
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cd->mbx.unit = unit;
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cd->mbx.port = cd->iobase;
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cd->mbx.retry = 3;
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cd->mbx.bp = bp;
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cd->mbx.p_offset = p->p_offset;
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splx(s);
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scd_doread(SCD_S_BEGIN,&(cd->mbx));
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return;
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}
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int
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scdioctl(dev_t dev, int cmd, caddr_t addr, int flags)
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{
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struct scd_data *cd;
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int unit,part;
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unit = scd_unit(dev);
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part = scd_part(dev);
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cd = scd_data + unit;
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XDEBUG(1, ("scd%d: ioctl: cmd=0x%lx\n", unit, cmd));
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if (!(cd->flags & SCDVALID))
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return EIO;
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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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*(struct disklabel *)addr = cd->dlabel;
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return 0;
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case DIOCGPART:
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((struct partinfo *)addr)->disklab = &cd->dlabel;
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((struct partinfo *)addr)->part =
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&cd->dlabel.d_partitions[0];
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return 0;
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case CDIOCPLAYTRACKS:
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return scd_playtracks(unit, (struct ioc_play_track *) addr);
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case CDIOCPLAYBLOCKS:
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return EINVAL;
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case CDIOCPLAYMSF:
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return scd_playmsf(unit, (struct ioc_play_msf *) addr);
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case CDIOCREADSUBCHANNEL:
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return scd_subchan(unit, (struct ioc_read_subchannel *) addr);
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case CDIOREADTOCHEADER:
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return scd_toc_header (unit, (struct ioc_toc_header *) addr);
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case CDIOREADTOCENTRYS:
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return scd_toc_entrys (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 scd_resume(unit);
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case CDIOCPAUSE:
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return scd_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 scd_stop(unit);
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case CDIOCEJECT:
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return scd_eject(unit);
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case CDIOCALLOW:
|
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return 0;
|
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case CDIOCSETDEBUG:
|
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#ifdef SCD_DEBUG
|
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scd_debuglevel++;
|
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#endif
|
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return 0;
|
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case CDIOCCLRDEBUG:
|
|
#ifdef SCD_DEBUG
|
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scd_debuglevel = 0;
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|
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#endif
|
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return 0;
|
|
default:
|
|
printf("scd%d: unsupported ioctl (cmd=0x%lx)\n", unit, cmd);
|
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return ENOTTY;
|
|
}
|
|
}
|
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|
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int
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scdsize(dev_t dev)
|
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{
|
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return -1;
|
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}
|
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|
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void
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scdintr()
|
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{
|
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return;
|
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}
|
|
|
|
/***************************************************************
|
|
* lower level of driver starts here
|
|
**************************************************************/
|
|
|
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static int
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scd_playtracks(int unit, struct ioc_play_track *pt)
|
|
{
|
|
struct scd_data *cd = scd_data + unit;
|
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struct ioc_play_msf msf;
|
|
int a = pt->start_track;
|
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int z = pt->end_track;
|
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int rc, i;
|
|
|
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if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) {
|
|
if (rc == -ERR_NOT_SPINNING) {
|
|
if (spin_up(unit) != 0)
|
|
return EIO;
|
|
rc = read_toc(unit);
|
|
}
|
|
if (rc != 0) {
|
|
print_error(unit, rc);
|
|
return EIO;
|
|
}
|
|
}
|
|
|
|
XDEBUG(1, ("scd%d: playtracks from %d:%d to %d:%d\n", unit,
|
|
a, pt->start_index, z, pt->end_index));
|
|
|
|
if ( a < cd->first_track
|
|
|| a > cd->last_track
|
|
|| a > z
|
|
|| z > cd->last_track)
|
|
return EINVAL;
|
|
|
|
bcopy(cd->toc[a].start_msf, &msf.start_m, 3);
|
|
hsg2msf(msf2hsg(cd->toc[z+1].start_msf)-1, &msf.end_m);
|
|
|
|
return scd_play(unit, &msf);
|
|
}
|
|
|
|
/* The start/end msf is expected to be in bin format */
|
|
static int
|
|
scd_playmsf(int unit, struct ioc_play_msf *msfin)
|
|
{
|
|
struct ioc_play_msf msf;
|
|
|
|
msf.start_m = bin2bcd(msfin->start_m);
|
|
msf.start_s = bin2bcd(msfin->start_s);
|
|
msf.start_f = bin2bcd(msfin->start_f);
|
|
msf.end_m = bin2bcd(msfin->end_m);
|
|
msf.end_s = bin2bcd(msfin->end_s);
|
|
msf.end_f = bin2bcd(msfin->end_f);
|
|
|
|
return scd_play(unit, &msf);
|
|
}
|
|
|
|
/* The start/end msf is expected to be in bcd format */
|
|
static int
|
|
scd_play(int unit, struct ioc_play_msf *msf)
|
|
{
|
|
struct scd_data *cd = scd_data + unit;
|
|
int i, rc;
|
|
|
|
XDEBUG(1, ("scd%d: playing: %02x:%02x:%02x -> %02x:%02x:%02x\n", unit,
|
|
msf->start_m, msf->start_s, msf->start_f,
|
|
msf->end_m, msf->end_s, msf->end_f));
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
rc = send_cmd(unit, CMD_PLAY_AUDIO, 7,
|
|
0x03,
|
|
msf->start_m, msf->start_s, msf->start_f,
|
|
msf->end_m, msf->end_s, msf->end_f);
|
|
if (rc == -ERR_NOT_SPINNING) {
|
|
cd->flags &= ~SCDSPINNING;
|
|
if (spin_up(unit) != 0)
|
|
return EIO;
|
|
} else if (rc < 0) {
|
|
print_error(unit, rc);
|
|
return EIO;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
cd->audio_status = CD_AS_PLAY_IN_PROGRESS;
|
|
bcopy((char *)msf, (char *)&cd->last_play, sizeof(struct ioc_play_msf));
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scd_stop(int unit)
|
|
{
|
|
struct scd_data *cd = scd_data + unit;
|
|
|
|
(void)send_cmd(unit, CMD_STOP_AUDIO, 0);
|
|
cd->audio_status = CD_AS_PLAY_COMPLETED;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scd_pause(int unit)
|
|
{
|
|
struct scd_data *cd = scd_data + unit;
|
|
struct sony_subchannel_position_data subpos;
|
|
|
|
if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS)
|
|
return EINVAL;
|
|
|
|
if (read_subcode(unit, &subpos) != 0)
|
|
return EIO;
|
|
|
|
if (send_cmd(unit, CMD_STOP_AUDIO, 0) != 0)
|
|
return EIO;
|
|
|
|
cd->last_play.start_m = subpos.abs_msf[0];
|
|
cd->last_play.start_s = subpos.abs_msf[1];
|
|
cd->last_play.start_f = subpos.abs_msf[2];
|
|
cd->audio_status = CD_AS_PLAY_PAUSED;
|
|
|
|
XDEBUG(1, ("scd%d: pause @ %02x:%02x:%02x\n", unit,
|
|
cd->last_play.start_m,
|
|
cd->last_play.start_s,
|
|
cd->last_play.start_f));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scd_resume(int unit)
|
|
{
|
|
if (scd_data[unit].audio_status != CD_AS_PLAY_PAUSED)
|
|
return EINVAL;
|
|
return scd_play(unit, &scd_data[unit].last_play);
|
|
}
|
|
|
|
static int
|
|
scd_eject(int unit)
|
|
{
|
|
struct scd_data *cd = scd_data + unit;
|
|
int port = cd->iobase;
|
|
|
|
cd->audio_status = CD_AS_AUDIO_INVALID;
|
|
cd->flags &= ~(SCDSPINNING|SCDTOC);
|
|
|
|
if (send_cmd(unit, CMD_STOP_AUDIO, 0) != 0 ||
|
|
send_cmd(unit, CMD_SPIN_DOWN, 0) != 0 ||
|
|
send_cmd(unit, CMD_EJECT, 0) != 0)
|
|
{
|
|
return EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scd_subchan(int unit, struct ioc_read_subchannel *sc)
|
|
{
|
|
struct scd_data *cd = scd_data + unit;
|
|
struct sony_subchannel_position_data q;
|
|
struct cd_sub_channel_info data;
|
|
|
|
XDEBUG(1, ("scd%d: subchan af=%d, df=%d\n", unit,
|
|
sc->address_format,
|
|
sc->data_format));
|
|
|
|
if (sc->address_format != CD_MSF_FORMAT)
|
|
return EINVAL;
|
|
|
|
if (sc->data_format != CD_CURRENT_POSITION)
|
|
return EINVAL;
|
|
|
|
if (read_subcode(unit, &q) != 0)
|
|
return EIO;
|
|
|
|
data.header.audio_status = cd->audio_status;
|
|
data.what.position.data_format = CD_MSF_FORMAT;
|
|
data.what.position.track_number = bcd2bin(q.track_number);
|
|
data.what.position.reladdr.msf.unused = 0;
|
|
data.what.position.reladdr.msf.minute = bcd2bin(q.rel_msf[0]);
|
|
data.what.position.reladdr.msf.second = bcd2bin(q.rel_msf[1]);
|
|
data.what.position.reladdr.msf.frame = bcd2bin(q.rel_msf[2]);
|
|
data.what.position.absaddr.msf.unused = 0;
|
|
data.what.position.absaddr.msf.minute = bcd2bin(q.abs_msf[0]);
|
|
data.what.position.absaddr.msf.second = bcd2bin(q.abs_msf[1]);
|
|
data.what.position.absaddr.msf.frame = bcd2bin(q.abs_msf[2]);
|
|
|
|
if (copyout(&data, sc->data, min(sizeof(struct cd_sub_channel_info), sc->data_len))!=0)
|
|
return EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
scd_probe(struct isa_device *dev)
|
|
{
|
|
struct sony_drive_configuration drive_config;
|
|
int unit = dev->id_unit;
|
|
int rc;
|
|
static char namebuf[8+16+8+3];
|
|
char *s = namebuf;
|
|
int loop_count = 0;
|
|
|
|
scd_data[unit].flags = SCDPROBING;
|
|
scd_data[unit].iobase = dev->id_iobase;
|
|
|
|
bzero(&drive_config, sizeof(drive_config));
|
|
|
|
again:
|
|
/* Reset drive */
|
|
write_control(dev->id_iobase, CBIT_RESET_DRIVE);
|
|
|
|
/* Calm down */
|
|
DELAY(300000);
|
|
|
|
/* Only the ATTENTION bit may be set */
|
|
if ((inb(dev->id_iobase+IREG_STATUS) & ~1) != 0) {
|
|
XDEBUG(1, ("scd: too many bits set. probe failed.\n"));
|
|
return 0;
|
|
}
|
|
rc = send_cmd(unit, CMD_GET_DRIVE_CONFIG, 0);
|
|
if (rc != sizeof(drive_config)) {
|
|
/* Sometimes if the drive is playing audio I get */
|
|
/* the bad result 82. Fix by repeating the reset */
|
|
if (rc > 0 && loop_count++ == 0)
|
|
goto again;
|
|
return 0;
|
|
}
|
|
if (get_result(unit, rc, (u_char *)&drive_config) != 0)
|
|
return 0;
|
|
|
|
bcopy(drive_config.vendor, namebuf, 8);
|
|
s = namebuf+8;
|
|
while (*(s-1) == ' ') /* Strip trailing spaces */
|
|
s--;
|
|
*s++ = ' ';
|
|
bcopy(drive_config.product, s, 16);
|
|
s += 16;
|
|
while (*(s-1) == ' ')
|
|
s--;
|
|
*s++ = ' ';
|
|
bcopy(drive_config.revision, s, 8);
|
|
s += 8;
|
|
while (*(s-1) == ' ')
|
|
s--;
|
|
*s = 0;
|
|
|
|
scd_data[unit].name = namebuf;
|
|
|
|
if (drive_config.config & 0x10)
|
|
scd_data[unit].double_speed = 1;
|
|
else
|
|
scd_data[unit].double_speed = 0;
|
|
|
|
return 4;
|
|
}
|
|
|
|
static int
|
|
read_subcode(int unit, struct sony_subchannel_position_data *sc)
|
|
{
|
|
int rc;
|
|
|
|
rc = send_cmd(unit, CMD_GET_SUBCHANNEL_DATA, 0);
|
|
if (rc < 0 || rc < sizeof(*sc))
|
|
return EIO;
|
|
if (get_result(unit, rc, (u_char *)sc) != 0)
|
|
return EIO;
|
|
return 0;
|
|
}
|
|
|
|
/* State machine copied from mcd.c */
|
|
|
|
/* This (and the code in mcd.c) will not work with more than one drive */
|
|
/* because there is only one mbxsave below. Should fix that some day. */
|
|
/* (mbxsave & state should probably be included in the scd_data struct and */
|
|
/* the unit number used as first argument to scd_doread().) /Micke */
|
|
|
|
/* state machine to process read requests
|
|
* initialize with SCD_S_BEGIN: reset state machine
|
|
* SCD_S_WAITSTAT: wait for ready (!busy)
|
|
* SCD_S_WAITSPIN: wait for drive to spin up (if not spinning)
|
|
* SCD_S_WAITFIFO: wait for param fifo to get ready, them exec. command.
|
|
* SCD_S_WAITREAD: wait for data ready, read data
|
|
* SCD_S_WAITPARAM: wait for command result params, read them, error if bad data read.
|
|
*/
|
|
|
|
static struct scd_mbx *mbxsave;
|
|
|
|
static void
|
|
scd_doread(int state, struct scd_mbx *mbxin)
|
|
{
|
|
struct scd_mbx *mbx = (state!=SCD_S_BEGIN) ? mbxsave : mbxin;
|
|
int unit = mbx->unit;
|
|
int port = mbx->port;
|
|
struct buf *bp = mbx->bp;
|
|
struct scd_data *cd = scd_data + unit;
|
|
int reg,i,k,c;
|
|
int blknum;
|
|
caddr_t addr;
|
|
char rdata[10];
|
|
static char sdata[3]; /* Must be preserved between calls to this function */
|
|
|
|
loop:
|
|
switch (state) {
|
|
case SCD_S_BEGIN:
|
|
mbx = mbxsave = mbxin;
|
|
|
|
case SCD_S_BEGIN1:
|
|
/* get status */
|
|
mbx->count = RDELAY_WAIT;
|
|
|
|
process_attention(unit);
|
|
goto trystat;
|
|
|
|
case SCD_S_WAITSTAT:
|
|
untimeout((timeout_func_t)scd_doread,(caddr_t)SCD_S_WAITSTAT);
|
|
if (mbx->count-- <= 0) {
|
|
printf("scd%d: timeout. drive busy.\n",unit);
|
|
goto harderr;
|
|
}
|
|
|
|
trystat:
|
|
if (IS_BUSY(port)) {
|
|
timeout((timeout_func_t)scd_doread,
|
|
(caddr_t)SCD_S_WAITSTAT,hz/100); /* XXX */
|
|
return;
|
|
}
|
|
|
|
process_attention(unit);
|
|
|
|
/* reject, if audio active */
|
|
if (cd->audio_status & CD_AS_PLAY_IN_PROGRESS) {
|
|
printf("scd%d: audio is active\n",unit);
|
|
goto harderr;
|
|
}
|
|
|
|
mbx->sz = cd->blksize;
|
|
|
|
firstblock:
|
|
/* for first block */
|
|
mbx->nblk = (bp->b_bcount + (mbx->sz-1)) / mbx->sz;
|
|
mbx->skip = 0;
|
|
|
|
nextblock:
|
|
if (!(cd->flags & SCDVALID))
|
|
goto changed;
|
|
|
|
blknum = (bp->b_blkno / (mbx->sz/DEV_BSIZE))
|
|
+ mbx->p_offset + mbx->skip/mbx->sz;
|
|
|
|
XDEBUG(2, ("scd%d: scd_doread: read blknum=%d\n", unit, blknum));
|
|
|
|
/* build parameter block */
|
|
hsg2msf(blknum, sdata);
|
|
|
|
write_control(port, CBIT_RESULT_READY_CLEAR);
|
|
write_control(port, CBIT_RPARAM_CLEAR);
|
|
write_control(port, CBIT_DATA_READY_CLEAR);
|
|
|
|
if (FSTATUS_BIT(port, FBIT_WPARAM_READY))
|
|
goto writeparam;
|
|
|
|
mbx->count = 100;
|
|
timeout((timeout_func_t)scd_doread,
|
|
(caddr_t)SCD_S_WAITFIFO,hz/100); /* XXX */
|
|
return;
|
|
|
|
case SCD_S_WAITSPIN:
|
|
untimeout((timeout_func_t)scd_doread,(caddr_t)SCD_S_WAITSPIN);
|
|
if (mbx->count-- <= 0) {
|
|
printf("scd%d: timeout waiting for drive to spin up.\n", unit);
|
|
goto harderr;
|
|
}
|
|
if (!STATUS_BIT(port, SBIT_RESULT_READY)) {
|
|
timeout((timeout_func_t)scd_doread,
|
|
(caddr_t)SCD_S_WAITSPIN,hz/100); /* XXX */
|
|
return;
|
|
}
|
|
write_control(port, CBIT_RESULT_READY_CLEAR);
|
|
switch ((i = inb(port+IREG_RESULT)) & 0xf0) {
|
|
case 0x20:
|
|
i = inb(port+IREG_RESULT);
|
|
print_error(unit, i);
|
|
goto harderr;
|
|
case 0x00:
|
|
(void)inb(port+IREG_RESULT);
|
|
cd->flags |= SCDSPINNING;
|
|
break;
|
|
}
|
|
XDEBUG(1, ("scd%d: DEBUG: spin up complete\n", unit));
|
|
|
|
state = SCD_S_BEGIN1;
|
|
goto loop;
|
|
|
|
case SCD_S_WAITFIFO:
|
|
untimeout((timeout_func_t)scd_doread,(caddr_t)SCD_S_WAITFIFO);
|
|
if (mbx->count-- <= 0) {
|
|
printf("scd%d: timeout. write param not ready.\n",unit);
|
|
goto harderr;
|
|
}
|
|
if (!FSTATUS_BIT(port, FBIT_WPARAM_READY)) {
|
|
timeout((timeout_func_t)scd_doread,
|
|
(caddr_t)SCD_S_WAITFIFO,hz/100); /* XXX */
|
|
return;
|
|
}
|
|
XDEBUG(1, ("scd%d: mbx->count (writeparamwait) = %d(%d)\n", unit, mbx->count, 100));
|
|
|
|
writeparam:
|
|
/* The reason this test isn't done 'till now is to make sure */
|
|
/* that it is ok to send the SPIN_UP cmd below. */
|
|
if (!(cd->flags & SCDSPINNING)) {
|
|
XDEBUG(1, ("scd%d: spinning up drive ...\n", unit));
|
|
outb(port+OREG_COMMAND, CMD_SPIN_UP);
|
|
mbx->count = 300;
|
|
timeout((timeout_func_t)scd_doread,
|
|
(caddr_t)SCD_S_WAITSPIN,hz/100); /* XXX */
|
|
return;
|
|
}
|
|
|
|
reg = port + OREG_WPARAMS;
|
|
/* send the read command */
|
|
disable_intr();
|
|
outb(reg, sdata[0]);
|
|
outb(reg, sdata[1]);
|
|
outb(reg, sdata[2]);
|
|
outb(reg, 0);
|
|
outb(reg, 0);
|
|
outb(reg, 1);
|
|
outb(port+OREG_COMMAND, CMD_READ);
|
|
enable_intr();
|
|
|
|
mbx->count = RDELAY_WAITREAD;
|
|
for (i = 0; i < 50; i++) {
|
|
if (STATUS_BIT(port, SBIT_DATA_READY))
|
|
goto got_data;
|
|
DELAY(100);
|
|
}
|
|
|
|
timeout((timeout_func_t)scd_doread,
|
|
(caddr_t)SCD_S_WAITREAD,hz/100); /* XXX */
|
|
return;
|
|
|
|
case SCD_S_WAITREAD:
|
|
untimeout((timeout_func_t)scd_doread,(caddr_t)SCD_S_WAITREAD);
|
|
if (mbx->count-- <= 0) {
|
|
if (STATUS_BIT(port, SBIT_RESULT_READY))
|
|
goto got_param;
|
|
printf("scd%d: timeout while reading data\n",unit);
|
|
goto readerr;
|
|
}
|
|
if (!STATUS_BIT(port, SBIT_DATA_READY)) {
|
|
process_attention(unit);
|
|
if (!(cd->flags & SCDVALID))
|
|
goto changed;
|
|
timeout((timeout_func_t)scd_doread,
|
|
(caddr_t)SCD_S_WAITREAD,hz/100); /* XXX */
|
|
return;
|
|
}
|
|
XDEBUG(2, ("scd%d: mbx->count (after RDY_BIT) = %d(%d)\n", unit, mbx->count, RDELAY_WAITREAD));
|
|
|
|
got_data:
|
|
/* data is ready */
|
|
addr = bp->b_un.b_addr + mbx->skip;
|
|
write_control(port, CBIT_DATA_READY_CLEAR);
|
|
insb(port+IREG_DATA, addr, mbx->sz);
|
|
|
|
mbx->count = 100;
|
|
for (i = 0; i < 20; i++) {
|
|
if (STATUS_BIT(port, SBIT_RESULT_READY))
|
|
goto waitfor_param;
|
|
DELAY(100);
|
|
}
|
|
goto waitfor_param;
|
|
|
|
case SCD_S_WAITPARAM:
|
|
untimeout((timeout_func_t)scd_doread,(caddr_t)SCD_S_WAITPARAM);
|
|
if (mbx->count-- <= 0) {
|
|
printf("scd%d: timeout waiting for params\n",unit);
|
|
goto readerr;
|
|
}
|
|
|
|
waitfor_param:
|
|
if (!STATUS_BIT(port, SBIT_RESULT_READY)) {
|
|
timeout((timeout_func_t)scd_doread,
|
|
(caddr_t)SCD_S_WAITPARAM,hz/100); /* XXX */
|
|
return;
|
|
}
|
|
#if SCD_DEBUG
|
|
if (mbx->count < 100 && scd_debuglevel > 0)
|
|
printf("scd%d: mbx->count (paramwait) = %d(%d)\n", unit, mbx->count, 100);
|
|
#endif
|
|
|
|
got_param:
|
|
write_control(port, CBIT_RESULT_READY_CLEAR);
|
|
switch ((i = inb(port+IREG_RESULT)) & 0xf0) {
|
|
case 0x50:
|
|
switch (i) {
|
|
case ERR_FATAL_READ_ERROR1:
|
|
case ERR_FATAL_READ_ERROR2:
|
|
printf("scd%d: unrecoverable read error 0x%x\n", unit, i);
|
|
goto harderr;
|
|
}
|
|
break;
|
|
case 0x20:
|
|
i = inb(port+IREG_RESULT);
|
|
switch (i) {
|
|
case ERR_NOT_SPINNING:
|
|
XDEBUG(1, ("scd%d: read error: drive not spinning\n", unit));
|
|
if (mbx->retry-- > 0) {
|
|
state = SCD_S_BEGIN1;
|
|
cd->flags &= ~SCDSPINNING;
|
|
goto loop;
|
|
}
|
|
goto harderr;
|
|
default:
|
|
print_error(unit, i);
|
|
goto readerr;
|
|
}
|
|
case 0x00:
|
|
i = inb(port+IREG_RESULT);
|
|
break;
|
|
}
|
|
|
|
if (--mbx->nblk > 0) {
|
|
mbx->skip += mbx->sz;
|
|
goto nextblock;
|
|
}
|
|
|
|
/* return buffer */
|
|
bp->b_resid = 0;
|
|
biodone(bp);
|
|
|
|
cd->flags &= ~SCDMBXBSY;
|
|
scd_start(mbx->unit);
|
|
return;
|
|
}
|
|
|
|
readerr:
|
|
if (mbx->retry-- > 0) {
|
|
printf("scd%d: retrying ...\n",unit);
|
|
state = SCD_S_BEGIN1;
|
|
goto loop;
|
|
}
|
|
harderr:
|
|
/* invalidate the buffer */
|
|
bp->b_error = EIO;
|
|
bp->b_flags |= B_ERROR;
|
|
bp->b_resid = bp->b_bcount;
|
|
biodone(bp);
|
|
|
|
cd->flags &= ~SCDMBXBSY;
|
|
scd_start(mbx->unit);
|
|
return;
|
|
|
|
changed:
|
|
printf("scd%d: media changed\n", unit);
|
|
goto harderr;
|
|
}
|
|
|
|
static 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 void
|
|
process_attention(unsigned unit)
|
|
{
|
|
unsigned port = scd_data[unit].iobase;
|
|
unsigned char code;
|
|
int count = 0;
|
|
int i;
|
|
|
|
while (IS_ATTENTION(port) && count++ < 30) {
|
|
write_control(port, CBIT_ATTENTION_CLEAR);
|
|
code = inb(port+IREG_RESULT);
|
|
|
|
#if SCD_DEBUG
|
|
if (scd_debuglevel > 0) {
|
|
if (count == 1)
|
|
printf("scd%d: DEBUG: ATTENTIONS = 0x%x", unit, code);
|
|
else
|
|
printf(",0x%x", code);
|
|
}
|
|
#endif
|
|
|
|
switch (code) {
|
|
case ATTEN_SPIN_DOWN:
|
|
scd_data[unit].flags &= ~SCDSPINNING;
|
|
break;
|
|
|
|
case ATTEN_SPIN_UP_DONE:
|
|
scd_data[unit].flags |= SCDSPINNING;
|
|
break;
|
|
|
|
case ATTEN_AUDIO_DONE:
|
|
scd_data[unit].audio_status = CD_AS_PLAY_COMPLETED;
|
|
break;
|
|
|
|
case ATTEN_DRIVE_LOADED:
|
|
scd_data[unit].flags &= ~(SCDTOC|SCDSPINNING|SCDVALID);
|
|
scd_data[unit].audio_status = CD_AS_AUDIO_INVALID;
|
|
break;
|
|
|
|
case ATTEN_EJECT_PUSHED:
|
|
scd_data[unit].flags &= ~SCDVALID;
|
|
break;
|
|
}
|
|
DELAY(100);
|
|
}
|
|
#if SCD_DEBUG
|
|
if (scd_debuglevel > 0 && count > 0)
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
|
|
/* Returns 0 OR sony error code */
|
|
static int
|
|
spin_up(unsigned unit)
|
|
{
|
|
unsigned char res_reg[12];
|
|
unsigned int res_size;
|
|
int rc;
|
|
int loop_count = 0;
|
|
|
|
again:
|
|
rc = send_cmd(unit, CMD_SPIN_UP, NULL, 0, res_reg, &res_size);
|
|
if (rc != 0) {
|
|
XDEBUG(2, ("scd%d: CMD_SPIN_UP error 0x%x\n", unit, rc));
|
|
return rc;
|
|
}
|
|
|
|
if (!(scd_data[unit].flags & SCDTOC)) {
|
|
rc = send_cmd(unit, CMD_READ_TOC, 0);
|
|
if (rc == ERR_NOT_SPINNING) {
|
|
if (loop_count++ < 3)
|
|
goto again;
|
|
return rc;
|
|
}
|
|
if (rc != 0)
|
|
return rc;
|
|
}
|
|
|
|
scd_data[unit].flags |= SCDSPINNING;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct sony_tracklist *
|
|
get_tl(struct sony_toc *toc, int size)
|
|
{
|
|
struct sony_tracklist *tl = &toc->tracks[0];
|
|
|
|
if (tl->track != 0xb0)
|
|
return tl;
|
|
(char *)tl += 9;
|
|
if (tl->track != 0xb1)
|
|
return tl;
|
|
(char *)tl += 9;
|
|
if (tl->track != 0xb2)
|
|
return tl;
|
|
(char *)tl += 9;
|
|
if (tl->track != 0xb3)
|
|
return tl;
|
|
(char *)tl += 9;
|
|
if (tl->track != 0xb4)
|
|
return tl;
|
|
(char *)tl += 9;
|
|
if (tl->track != 0xc0)
|
|
return tl;
|
|
(char *)tl += 9;
|
|
return tl;
|
|
}
|
|
|
|
static int
|
|
read_toc(dev_t dev)
|
|
{
|
|
unsigned unit;
|
|
struct scd_data *cd;
|
|
unsigned part = 0; /* For now ... */
|
|
struct sony_toc toc;
|
|
struct sony_tracklist *tl;
|
|
int rc, i, j;
|
|
u_long first, last;
|
|
|
|
unit = scd_unit(dev);
|
|
cd = scd_data + unit;
|
|
|
|
rc = send_cmd(unit, CMD_GET_TOC, 1, part+1);
|
|
if (rc < 0)
|
|
return rc;
|
|
if (rc > sizeof(toc)) {
|
|
printf("scd%d: program error: toc too large (%d)\n", unit, rc);
|
|
return EIO;
|
|
}
|
|
if (get_result(unit, rc, (u_char *)&toc) != 0)
|
|
return EIO;
|
|
|
|
XDEBUG(1, ("scd%d: toc read. len = %d, sizeof(toc) = %d\n", unit, rc, sizeof(toc)));
|
|
|
|
tl = get_tl(&toc, rc);
|
|
first = msf2hsg(tl->start_msf);
|
|
last = msf2hsg(toc.lead_out_start_msf);
|
|
cd->blksize = SCDBLKSIZE;
|
|
cd->disksize = last*cd->blksize/DEV_BSIZE;
|
|
|
|
XDEBUG(1, ("scd%d: firstsector = %d, lastsector = %d", unit,
|
|
first, last));
|
|
|
|
cd->first_track = bcd2bin(toc.first_track);
|
|
cd->last_track = bcd2bin(toc.last_track);
|
|
if (cd->last_track > (MAX_TRACKS-2))
|
|
cd->last_track = MAX_TRACKS-2;
|
|
for (j = 0, i = cd->first_track; i <= cd->last_track; i++, j++) {
|
|
cd->toc[i].adr = tl[j].adr;
|
|
cd->toc[i].ctl = tl[j].ctl; /* for xcdplayer */
|
|
bcopy(tl[j].start_msf, cd->toc[i].start_msf, 3);
|
|
#ifdef SCD_DEBUG
|
|
if (scd_debuglevel > 0) {
|
|
if ((j % 3) == 0)
|
|
printf("\nscd%d: tracks ", unit);
|
|
printf("[%03d: %2d %2d %2d] ", i,
|
|
bcd2bin(cd->toc[i].start_msf[0]),
|
|
bcd2bin(cd->toc[i].start_msf[1]),
|
|
bcd2bin(cd->toc[i].start_msf[2]));
|
|
}
|
|
#endif
|
|
}
|
|
bcopy(toc.lead_out_start_msf, cd->toc[cd->last_track+1].start_msf, 3);
|
|
#ifdef SCD_DEBUG
|
|
if (scd_debuglevel > 0) {
|
|
i = cd->last_track+1;
|
|
printf("[END: %2d %2d %2d]\n",
|
|
bcd2bin(cd->toc[i].start_msf[0]),
|
|
bcd2bin(cd->toc[i].start_msf[1]),
|
|
bcd2bin(cd->toc[i].start_msf[2]));
|
|
}
|
|
#endif
|
|
|
|
bzero(&cd->dlabel,sizeof(struct disklabel));
|
|
/* filled with spaces first */
|
|
strncpy(cd->dlabel.d_typename," ",
|
|
sizeof(cd->dlabel.d_typename));
|
|
strncpy(cd->dlabel.d_typename, cd->name,
|
|
min(strlen(cd->name), sizeof(cd->dlabel.d_typename) - 1));
|
|
strncpy(cd->dlabel.d_packname,"unknown ",
|
|
sizeof(cd->dlabel.d_packname));
|
|
cd->dlabel.d_secsize = cd->blksize;
|
|
cd->dlabel.d_nsectors = 100;
|
|
cd->dlabel.d_ntracks = 1;
|
|
cd->dlabel.d_ncylinders = (cd->disksize/100)+1;
|
|
cd->dlabel.d_secpercyl = 100;
|
|
cd->dlabel.d_secperunit = cd->disksize;
|
|
cd->dlabel.d_rpm = 300;
|
|
cd->dlabel.d_interleave = 1;
|
|
cd->dlabel.d_flags = D_REMOVABLE;
|
|
cd->dlabel.d_npartitions= 1;
|
|
cd->dlabel.d_partitions[0].p_offset = 0;
|
|
cd->dlabel.d_partitions[0].p_size = cd->disksize;
|
|
cd->dlabel.d_partitions[0].p_fstype = 9;
|
|
cd->dlabel.d_magic = DISKMAGIC;
|
|
cd->dlabel.d_magic2 = DISKMAGIC;
|
|
cd->dlabel.d_checksum = dkcksum(&cd->dlabel);
|
|
|
|
cd->flags |= SCDTOC;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline void
|
|
write_control(unsigned port, unsigned data)
|
|
{
|
|
outb(port + OREG_CONTROL, data);
|
|
}
|
|
|
|
static void
|
|
init_drive(unsigned unit)
|
|
{
|
|
int rc;
|
|
|
|
rc = send_cmd(unit, CMD_SET_DRIVE_PARAM, 2,
|
|
0x05, 0x03 | ((scd_data[unit].double_speed) ? 0x04: 0));
|
|
if (rc != 0)
|
|
printf("scd%d: Unable to set parameters. Errcode = 0x%x\n", unit, rc);
|
|
}
|
|
|
|
/* Returns 0 or errno */
|
|
static int
|
|
get_result(u_int unit, int result_len, u_char *result)
|
|
{
|
|
unsigned int port = scd_data[unit].iobase;
|
|
unsigned int res_reg = port + IREG_RESULT;
|
|
unsigned char c;
|
|
int loop_index = 2; /* send_cmd() reads two bytes ... */
|
|
|
|
XDEBUG(1, ("scd%d: DEBUG: get_result: bytes=%d\n", unit, result_len));
|
|
|
|
while (result_len-- > 0) {
|
|
if (loop_index++ >= 10) {
|
|
loop_index = 1;
|
|
if (waitfor_status_bits(unit, SBIT_RESULT_READY, 0))
|
|
return EIO;
|
|
write_control(port, CBIT_RESULT_READY_CLEAR);
|
|
}
|
|
if (result)
|
|
*result++ = inb(res_reg);
|
|
else
|
|
(void)inb(res_reg);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Returns -0x100 for timeout, -(drive error code) OR number of result bytes */
|
|
static int
|
|
send_cmd(u_int unit, u_char cmd, u_int nargs, ...)
|
|
{
|
|
va_list ap;
|
|
u_int port = scd_data[unit].iobase;
|
|
u_int reg;
|
|
u_char c;
|
|
int rc;
|
|
int i;
|
|
|
|
if (waitfor_status_bits(unit, 0, SBIT_BUSY)) {
|
|
printf("scd%d: drive busy\n", unit);
|
|
return -0x100;
|
|
}
|
|
|
|
XDEBUG(1,("scd%d: DEBUG: send_cmd: cmd=0x%x nargs=%d", unit, cmd, nargs));
|
|
|
|
write_control(port, CBIT_RESULT_READY_CLEAR);
|
|
write_control(port, CBIT_RPARAM_CLEAR);
|
|
|
|
for (i = 0; i < 100; i++)
|
|
if (FSTATUS_BIT(port, FBIT_WPARAM_READY))
|
|
break;
|
|
if (!FSTATUS_BIT(port, FBIT_WPARAM_READY)) {
|
|
XDEBUG(1, ("\nscd%d: wparam timeout\n", unit));
|
|
return -EIO;
|
|
}
|
|
|
|
va_start(ap, nargs);
|
|
reg = port + OREG_WPARAMS;
|
|
for (i = 0; i < nargs; i++) {
|
|
c = (u_char)va_arg(ap, int);
|
|
outb(reg, c);
|
|
XDEBUG(1, (",{0x%x}", c));
|
|
}
|
|
va_end(ap);
|
|
XDEBUG(1, ("\n"));
|
|
|
|
outb(port+OREG_COMMAND, cmd);
|
|
|
|
if (rc = waitfor_status_bits(unit, SBIT_RESULT_READY, SBIT_BUSY))
|
|
return -0x100;
|
|
|
|
reg = port + IREG_RESULT;
|
|
write_control(port, CBIT_RESULT_READY_CLEAR);
|
|
switch ((rc = inb(reg)) & 0xf0) {
|
|
case 0x20:
|
|
rc = inb(reg);
|
|
/* FALL TROUGH */
|
|
case 0x50:
|
|
XDEBUG(1, ("scd%d: DEBUG: send_cmd: drive_error=0x%x\n", unit, rc));
|
|
return -rc;
|
|
case 0x00:
|
|
default:
|
|
rc = inb(reg);
|
|
XDEBUG(1, ("scd%d: DEBUG: send_cmd: result_len=%d\n", unit, rc));
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
static void
|
|
print_error(int unit, int errcode)
|
|
{
|
|
switch (errcode) {
|
|
case -ERR_CD_NOT_LOADED:
|
|
printf("scd%d: door is open\n", unit);
|
|
break;
|
|
case -ERR_NO_CD_INSIDE:
|
|
printf("scd%d: no cd inside\n", unit);
|
|
break;
|
|
default:
|
|
if (errcode == -0x100 || errcode > 0)
|
|
printf("scd%d: device timeout\n", unit);
|
|
else
|
|
printf("scd%d: unexpected error 0x%x\n", unit, -errcode);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Returns 0 or errno value */
|
|
static int
|
|
waitfor_status_bits(int unit, int bits_set, int bits_clear)
|
|
{
|
|
u_int port = scd_data[unit].iobase;
|
|
u_int flags = scd_data[unit].flags;
|
|
u_int reg = port + IREG_STATUS;
|
|
u_int max_loop;
|
|
u_char c = 0;
|
|
|
|
if (flags & SCDPROBING) {
|
|
max_loop = 0;
|
|
while (max_loop++ < 1000) {
|
|
c = inb(reg);
|
|
if (c == 0xff)
|
|
return EIO;
|
|
if (c & SBIT_ATTENTION) {
|
|
process_attention(unit);
|
|
continue;
|
|
}
|
|
if ((c & bits_set) == bits_set &&
|
|
(c & bits_clear) == 0)
|
|
{
|
|
break;
|
|
}
|
|
DELAY(10000);
|
|
}
|
|
} else {
|
|
max_loop = 100;
|
|
while (max_loop-- > 0) {
|
|
c = inb(reg);
|
|
if (c & SBIT_ATTENTION) {
|
|
process_attention(unit);
|
|
continue;
|
|
}
|
|
if ((c & bits_set) == bits_set &&
|
|
(c & bits_clear) == 0)
|
|
{
|
|
break;
|
|
}
|
|
tsleep(waitfor_status_bits, PZERO - 1, "waitfor", hz/10);
|
|
}
|
|
}
|
|
if ((c & bits_set) == bits_set &&
|
|
(c & bits_clear) == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
#ifdef SCD_DEBUG
|
|
if (scd_debuglevel > 0)
|
|
printf("scd%d: DEBUG: waitfor: TIMEOUT (0x%x,(0x%x,0x%x))\n", unit, c, bits_set, bits_clear);
|
|
else
|
|
#endif
|
|
printf("scd%d: timeout.\n", unit);
|
|
return EIO;
|
|
}
|
|
|
|
/* these two routines for xcdplayer - "borrowed" from mcd.c */
|
|
static int
|
|
scd_toc_header (int unit, struct ioc_toc_header* th)
|
|
{
|
|
struct scd_data *cd = scd_data + unit;
|
|
int rc;
|
|
|
|
if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) {
|
|
print_error(unit, rc);
|
|
return EIO;
|
|
}
|
|
|
|
th->starting_track = cd->first_track;
|
|
th->ending_track = cd->last_track;
|
|
th->len = 0; /* not used */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scd_toc_entrys (int unit, struct ioc_read_toc_entry *te)
|
|
{
|
|
struct scd_data *cd = scd_data + unit;
|
|
struct cd_toc_entry toc_entry;
|
|
int rc, i, len = te->data_len;
|
|
|
|
if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) {
|
|
print_error(unit, rc);
|
|
return EIO;
|
|
}
|
|
|
|
/* find the toc to copy*/
|
|
i = te->starting_track;
|
|
if (i == SCD_LASTPLUS1)
|
|
i = cd->last_track + 1;
|
|
|
|
/* verify starting track */
|
|
if (i < cd->first_track || i > cd->last_track+1)
|
|
return EINVAL;
|
|
|
|
/* valid length ? */
|
|
if (len < sizeof(struct cd_toc_entry)
|
|
|| (len % sizeof(struct cd_toc_entry)) != 0)
|
|
return EINVAL;
|
|
|
|
/* copy the toc data */
|
|
toc_entry.control = cd->toc[i].ctl;
|
|
toc_entry.addr_type = te->address_format;
|
|
toc_entry.track = i;
|
|
if (te->address_format == CD_MSF_FORMAT) {
|
|
toc_entry.addr.msf.unused = 0;
|
|
toc_entry.addr.msf.minute = bcd2bin(cd->toc[i].start_msf[0]);
|
|
toc_entry.addr.msf.second = bcd2bin(cd->toc[i].start_msf[1]);
|
|
toc_entry.addr.msf.frame = bcd2bin(cd->toc[i].start_msf[2]);
|
|
}
|
|
|
|
/* copy the data back */
|
|
if (copyout(&toc_entry, te->data, sizeof(struct cd_toc_entry)) != 0)
|
|
return EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
#endif /* NSCD > 0 */
|