1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/drivers/cdrom/cd_mmc.c	Thu Jun 10 22:13:16 2010 +1000
     1.3 @@ -0,0 +1,238 @@
     1.4 +/**
     1.5 + * $Id$
     1.6 + *
     1.7 + * SCSI/MMC device interface (depends on lower-level SCSI transport)
     1.8 + *
     1.9 + * Copyright (c) 2009 Nathan Keynes.
    1.10 + *
    1.11 + * This program is free software; you can redistribute it and/or modify
    1.12 + * it under the terms of the GNU General Public License as published by
    1.13 + * the Free Software Foundation; either version 2 of the License, or
    1.14 + * (at your option) any later version.
    1.15 + *
    1.16 + * This program is distributed in the hope that it will be useful,
    1.17 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.18 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.19 + * GNU General Public License for more details.
    1.20 + */
    1.21 +
    1.22 +#include <assert.h>
    1.23 +#include <string.h>
    1.24 +#include <glib/gstrfuncs.h>
    1.25 +#include "lxdream.h"
    1.26 +#include "gettext.h"
    1.27 +#include "drivers/cdrom/cdimpl.h"
    1.28 +
    1.29 +#define MAXTOCENTRIES 600  /* This is a fairly generous overestimate really */
    1.30 +#define MAXTOCSIZE 4 + (MAXTOCENTRIES*11)
    1.31 +#define MAX_SECTORS_PER_CALL 1
    1.32 +
    1.33 +/**
    1.34 + * Parse the TOC (format 2) into the cdrom_disc structure
    1.35 + */
    1.36 +void mmc_parse_toc2( cdrom_disc_t disc, unsigned char *buf )
    1.37 +{
    1.38 +    int max_track = 0;
    1.39 +    int max_session = 0;
    1.40 +    int last_track = -1;
    1.41 +    int leadout = -1;
    1.42 +    int len = (buf[0] << 8) | buf[1];
    1.43 +    int session_type = -1;
    1.44 +    int i;
    1.45 +    for( i = 4; i<len; i+=11 ) {
    1.46 +        int session = buf[i];
    1.47 +        int adr = buf[i+1] >> 4;
    1.48 +        int point = buf[i+3];
    1.49 +        if( adr == 0x01 && point > 0 && point < 100 ) {
    1.50 +            /* Track info */
    1.51 +            int trackno = point-1;
    1.52 +            if( point > max_track ) {
    1.53 +                max_track = point;
    1.54 +            }
    1.55 +            if( session > max_session ) {
    1.56 +                max_session = session;
    1.57 +            }
    1.58 +            disc->track[trackno].trackno = point;
    1.59 +            disc->track[trackno].flags = (buf[i+1] & 0x0F) << 4;
    1.60 +            disc->track[trackno].sessionno = session;
    1.61 +            disc->track[trackno].lba = MSFTOLBA(buf[i+8],buf[i+9],buf[i+10]);
    1.62 +            last_track = trackno;
    1.63 +        } else switch( (adr << 8) | point ) {
    1.64 +        case 0x1A0: /* session info */
    1.65 +            if( buf[i+9] == 0x20 ) {
    1.66 +                session_type = CDROM_DISC_XA;
    1.67 +            } else {
    1.68 +                session_type = CDROM_DISC_NONXA;
    1.69 +            }
    1.70 +            disc->disc_type = session_type;
    1.71 +            break;
    1.72 +        case 0x1A2: /* leadout */
    1.73 +            disc->leadout = MSFTOLBA(buf[i+8], buf[i+9], buf[i+10]);
    1.74 +            break;
    1.75 +        }
    1.76 +    }
    1.77 +    disc->track_count = max_track;
    1.78 +    disc->session_count = max_session;
    1.79 +}
    1.80 +
    1.81 +
    1.82 +const char *mmc_parse_inquiry( unsigned char *buf )
    1.83 +{
    1.84 +    char vendorid[9];
    1.85 +    char productid[17];
    1.86 +    char productrev[5];
    1.87 +    memcpy( vendorid, buf+8, 8 ); vendorid[8] = 0;
    1.88 +    memcpy( productid, buf+16, 16 ); productid[16] = 0;
    1.89 +    memcpy( productrev, buf+32, 4 ); productrev[4] = 0;
    1.90 +    return g_strdup_printf( "%.8s %.16s %.4s", g_strstrip(vendorid),
    1.91 +              g_strstrip(productid), g_strstrip(productrev) );
    1.92 +}
    1.93 +
    1.94 +/**
    1.95 + * Construct a drive indentification string based on the response to the
    1.96 + * INQUIRY command. On success, returns the disc identification as a newly
    1.97 + * allocated string, otherwise NULL.
    1.98 + */
    1.99 +const char *cdrom_disc_scsi_identify_drive( cdrom_disc_t disc )
   1.100 +{
   1.101 +    unsigned char ident[256];
   1.102 +    uint32_t identlen = 256;
   1.103 +    char cmd[12] = {0x12,0,0,0, 0xFF,0,0,0, 0,0,0,0};
   1.104 +    cdrom_error_t status = SCSI_TRANSPORT(disc)->packet_read( disc, cmd, ident, &identlen );
   1.105 +    if( status == CDROM_ERROR_OK ) {
   1.106 +        return mmc_parse_inquiry(ident);
   1.107 +    }
   1.108 +    return NULL;
   1.109 +}
   1.110 +
   1.111 +
   1.112 +static cdrom_error_t cdrom_disc_scsi_read_sectors( sector_source_t source, cdrom_lba_t lba,
   1.113 +        cdrom_count_t count, cdrom_read_mode_t mode, unsigned char *buf, size_t *length )
   1.114 +{
   1.115 +    assert( IS_SECTOR_SOURCE_TYPE(source,DISC_SECTOR_SOURCE) );
   1.116 +    cdrom_disc_t disc = (cdrom_disc_t)source;
   1.117 +    uint32_t sector_size = CDROM_MAX_SECTOR_SIZE;
   1.118 +    char cmd[12];
   1.119 +
   1.120 +    cmd[0] = 0xBE;
   1.121 +    cmd[1] = CDROM_READ_TYPE(mode);
   1.122 +    cmd[2] = (lba >> 24) & 0xFF;
   1.123 +    cmd[3] = (lba >> 16) & 0xFF;
   1.124 +    cmd[4] = (lba >> 8) & 0xFF;
   1.125 +    cmd[5] = lba & 0xFF;
   1.126 +    cmd[6] = (count>>16) & 0xFF;
   1.127 +    cmd[7] = (count>>8) & 0xFF;
   1.128 +    cmd[8] = count & 0xFF;
   1.129 +    cmd[9] = CDROM_READ_FIELDS(mode)>>8;
   1.130 +    cmd[10]= 0;
   1.131 +    cmd[11]= 0;
   1.132 +
   1.133 +    cdrom_error_t status = SCSI_TRANSPORT(disc)->packet_read( disc, cmd, buf, &sector_size );
   1.134 +    if( status != 0 ) {
   1.135 +        return status;
   1.136 +    }
   1.137 +    /* FIXME */
   1.138 +    *length = 2048;
   1.139 +    return 0;
   1.140 +}
   1.141 +
   1.142 +/**
   1.143 + * Read the full table of contents into the disc from the device.
   1.144 + */
   1.145 +gboolean cdrom_disc_scsi_read_toc( cdrom_disc_t disc, ERROR *err )
   1.146 +{
   1.147 +    unsigned char buf[MAXTOCSIZE];
   1.148 +    uint32_t buflen = sizeof(buf);
   1.149 +    char cmd[12] = { 0x43, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
   1.150 +
   1.151 +    cmd[7] = (sizeof(buf))>>8;
   1.152 +    cmd[8] = (sizeof(buf))&0xFF;
   1.153 +    memset( buf, 0, sizeof(buf) );
   1.154 +    cdrom_error_t status = SCSI_TRANSPORT(disc)->packet_read(disc, cmd, buf, &buflen );
   1.155 +    if( status == CDROM_ERROR_OK ) {
   1.156 +	    mmc_parse_toc2( disc, buf );
   1.157 +	    return TRUE;
   1.158 +    } else {
   1.159 +    	if( (status & 0xFF) != 0x02 ) {
   1.160 +    	    /* Sense key 2 == Not Ready (ie temporary failure). Just ignore and
   1.161 +    	     * consider the drive empty for now, but warn about any other errors
   1.162 +    	     * we get. */
   1.163 +    	    WARN( _("Unable to read disc table of contents (error %04x)"), status );
   1.164 +    	}
   1.165 +    	cdrom_disc_clear_toc(disc);
   1.166 +    	return FALSE;
   1.167 +    }
   1.168 +}
   1.169 +
   1.170 +static gboolean cdrom_disc_scsi_check_media( cdrom_disc_t disc )
   1.171 +{
   1.172 +	if( SCSI_TRANSPORT(disc)->media_changed(disc) ) {
   1.173 +		cdrom_disc_scsi_read_toc(disc, NULL);
   1.174 +		return TRUE;
   1.175 +	} else {
   1.176 +		return FALSE;
   1.177 +	}
   1.178 +}
   1.179 +
   1.180 +static cdrom_error_t cdrom_disc_scsi_play_audio( cdrom_disc_t disc, cdrom_lba_t lba, cdrom_count_t length )
   1.181 +{
   1.182 +    char cmd[12] = { 0xA5, 0,0,0, 0,0,0,0, 0,0,0,0 };
   1.183 +    cmd[2] = (lba >> 24) & 0xFF;
   1.184 +    cmd[3] = (lba >> 16) & 0xFF;
   1.185 +    cmd[4] = (lba >> 8) & 0xFF;
   1.186 +    cmd[5] = lba & 0xFF;
   1.187 +    cmd[6] = (length >> 24) & 0xFF;
   1.188 +    cmd[7] = (length >> 16) & 0xFF;
   1.189 +    cmd[8] = (length >> 8) & 0xFF;
   1.190 +    cmd[9] = length & 0xFF;
   1.191 +
   1.192 +    return SCSI_TRANSPORT(disc)->packet_cmd( disc, cmd );
   1.193 +}
   1.194 +
   1.195 +
   1.196 +static cdrom_error_t cdrom_disc_scsi_stop_audio( cdrom_disc_t disc )
   1.197 +{
   1.198 +    uint32_t buflen = 0;
   1.199 +    char cmd[12] = {0x4E,0,0,0, 0,0,0,0, 0,0,0,0};
   1.200 +    
   1.201 +    return SCSI_TRANSPORT(disc)->packet_cmd( disc, cmd );
   1.202 +}
   1.203 +
   1.204 +void cdrom_disc_scsi_init( cdrom_disc_t disc, cdrom_scsi_transport_t scsi )
   1.205 +{
   1.206 +    disc->impl_data = scsi;
   1.207 +    disc->source.read_sectors = cdrom_disc_scsi_read_sectors;
   1.208 +    disc->read_toc = cdrom_disc_scsi_read_toc;
   1.209 +    disc->check_media = cdrom_disc_scsi_check_media;
   1.210 +    disc->play_audio = cdrom_disc_scsi_play_audio;
   1.211 +    disc->stop_audio = cdrom_disc_scsi_stop_audio;
   1.212 +}
   1.213 +
   1.214 +cdrom_disc_t cdrom_disc_scsi_new( const char *filename, cdrom_scsi_transport_t scsi, ERROR *err )
   1.215 +{
   1.216 +    cdrom_disc_t disc = cdrom_disc_new(filename, err);
   1.217 +    if( disc != NULL ) {
   1.218 +        /* Initialize */
   1.219 +        cdrom_disc_scsi_init( disc, scsi );
   1.220 +        cdrom_disc_read_toc(disc, err);
   1.221 +    }
   1.222 +    return disc;
   1.223 +} 
   1.224 +
   1.225 +cdrom_disc_t cdrom_disc_scsi_new_file( FILE *f, const char *filename, cdrom_scsi_transport_t scsi, ERROR *err )
   1.226 +{
   1.227 +    cdrom_disc_t disc = cdrom_disc_new(filename, err);
   1.228 +    if( disc != NULL ) {
   1.229 +        /* Initialize */
   1.230 +        disc->base_source = file_sector_source_new( f, SECTOR_UNKNOWN, 0, 0, TRUE );
   1.231 +        if( disc->base_source != NULL ) {
   1.232 +            sector_source_ref( disc->base_source );
   1.233 +            cdrom_disc_scsi_init( disc, scsi );
   1.234 +            cdrom_disc_read_toc(disc, err);
   1.235 +        } else {
   1.236 +            cdrom_disc_unref(disc);
   1.237 +            disc = NULL;
   1.238 +        }
   1.239 +    }
   1.240 +    return disc;
   1.241 +}