filename | src/gdrom/mmc.c |
changeset | 720:b5594d1ac80a |
next | 722:1a16b3914508 |
author | nkeynes |
date | Sat Jul 05 11:57:36 2008 +0000 (14 years ago) |
permissions | -rw-r--r-- |
last change | Get OS X cdrom driver to the 'sort of working' stage. Hide most of the IOKit fun in a separate osx_iokit module. |
file | annotate | diff | log | raw |
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +00001.2 +++ b/src/gdrom/mmc.c Sat Jul 05 11:57:36 2008 +00001.3 @@ -0,0 +1,101 @@1.4 +/**1.5 + * $Id: mmc.c 662 2008-03-02 11:38:08Z nkeynes $1.6 + *1.7 + * MMC host-side support functions.1.8 + *1.9 + * Copyright (c) 2008 Nathan Keynes.1.10 + *1.11 + * This program is free software; you can redistribute it and/or modify1.12 + * it under the terms of the GNU General Public License as published by1.13 + * the Free Software Foundation; either version 2 of the License, or1.14 + * (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 of1.18 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1.19 + * GNU General Public License for more details.1.20 + */1.21 +1.22 +#include "gdrom/gddriver.h"1.23 +#include "gdrom/packet.h"1.24 +1.25 +#define MSFTOLBA( m,s,f ) (f + (s*CD_FRAMES_PER_SECOND) + (m*CD_FRAMES_PER_MINUTE))1.26 +1.27 +void mmc_make_read_cd_cmd( char *cmd, uint32_t real_sector, int mode )1.28 +{1.29 + cmd[0] = 0xBE;1.30 + cmd[1] = (mode & 0x0E) << 1;1.31 + cmd[2] = (real_sector >> 24) & 0xFF;1.32 + cmd[3] = (real_sector >> 16) & 0xFF;1.33 + cmd[4] = (real_sector >> 8) & 0xFF;1.34 + cmd[5] = real_sector & 0xFF;1.35 + cmd[6] = 0;1.36 + cmd[7] = 0;1.37 + cmd[8] = 1;1.38 +1.39 + if( READ_CD_RAW(mode) ) {1.40 + cmd[9] = 0xF0;1.41 + } else {1.42 + if( READ_CD_HEADER(mode) ) {1.43 + cmd[9] = 0xA0;1.44 + }1.45 + if( READ_CD_SUBHEAD(mode) ) {1.46 + cmd[9] |= 0x40;1.47 + }1.48 + if( READ_CD_DATA(mode) ) {1.49 + cmd[9] |= 0x10;1.50 + }1.51 + }1.52 +}1.53 +1.54 +void mmc_parse_toc2( gdrom_image_t disc, unsigned char *buf )1.55 +{1.56 + int max_track = 0;1.57 + int last_track = -1;1.58 + int leadout = -1;1.59 + int len = (buf[0] << 8) | buf[1];1.60 + int session_type = -1;1.61 + int i;1.62 + for( i = 4; i<len; i+=11 ) {1.63 + int session = buf[i];1.64 + int adr = buf[i+1] >> 4;1.65 + int point = buf[i+3];1.66 + if( adr == 0x01 && point > 0 && point < 100 ) {1.67 + /* Track info */1.68 + int trackno = point-1;1.69 + if( point > max_track ) {1.70 + max_track = point;1.71 + }1.72 + disc->track[trackno].flags = (buf[i+1] & 0x0F) << 4;1.73 + disc->track[trackno].session = session - 1;1.74 + disc->track[trackno].lba = MSFTOLBA(buf[i+8],buf[i+9],buf[i+10]);1.75 + if( disc->track[trackno].flags & TRACK_DATA ) {1.76 + disc->track[trackno].mode = GDROM_MODE1;1.77 + } else {1.78 + disc->track[trackno].mode = GDROM_CDDA;1.79 + }1.80 + if( last_track != -1 ) {1.81 + disc->track[last_track].sector_count = disc->track[trackno].lba -1.82 + disc->track[last_track].lba;1.83 + }1.84 + last_track = trackno;1.85 + } else switch( (adr << 8) | point ) {1.86 + case 0x1A0: /* session info */1.87 + if( buf[i+9] == 0x20 ) {1.88 + session_type = IDE_DISC_CDROMXA;1.89 + } else {1.90 + session_type = IDE_DISC_CDROM;1.91 + }1.92 + disc->disc_type = session_type;1.93 + break;1.94 + case 0x1A2: /* leadout */1.95 + leadout = MSFTOLBA(buf[i+8], buf[i+9], buf[i+10]);1.96 + break;1.97 + }1.98 + }1.99 + disc->track_count = max_track;1.100 +1.101 + if( leadout != -1 && last_track != -1 ) {1.102 + disc->track[last_track].sector_count = leadout - disc->track[last_track].lba;1.103 + }1.104 +}1.105 \ No newline at end of file
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