lxdream 0.9.1| filename | src/gdrom/mmc.c |
| changeset | 788:eb238a77f3c0 |
| prev | 729:4cc913eabd3d |
| author | nkeynes |
| date | Wed Jul 30 22:50:44 2008 +0000 (15 years ago) |
| permissions | -rw-r--r-- |
| last change | Bug #61: OpenBSD support (Modified) patch from bsdmaniak, thanks! |
| view | annotate | diff | log | raw |
1 /**
2 * $Id$
3 *
4 * MMC host-side support functions.
5 *
6 * Copyright (c) 2008 Nathan Keynes.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
19 #include "gdrom/gddriver.h"
20 #include "gdrom/packet.h"
22 #define MSFTOLBA( m,s,f ) (f + (s*CD_FRAMES_PER_SECOND) + (m*CD_FRAMES_PER_MINUTE))
24 void mmc_make_read_cd_cmd( char *cmd, uint32_t real_sector, int mode )
25 {
26 cmd[0] = 0xBE;
27 cmd[1] = (mode & 0x0E) << 1;
28 cmd[2] = (real_sector >> 24) & 0xFF;
29 cmd[3] = (real_sector >> 16) & 0xFF;
30 cmd[4] = (real_sector >> 8) & 0xFF;
31 cmd[5] = real_sector & 0xFF;
32 cmd[6] = 0;
33 cmd[7] = 0;
34 cmd[8] = 1;
35 cmd[9] = 0;
36 cmd[10]= 0;
37 cmd[11]= 0;
39 if( READ_CD_RAW(mode) ) {
40 cmd[9] = 0xF0;
41 } else {
42 if( READ_CD_HEADER(mode) ) {
43 cmd[9] = 0xA0;
44 }
45 if( READ_CD_SUBHEAD(mode) ) {
46 cmd[9] |= 0x40;
47 }
48 if( READ_CD_DATA(mode) ) {
49 cmd[9] |= 0x10;
50 }
51 }
52 }
54 void mmc_parse_toc2( gdrom_image_t disc, unsigned char *buf )
55 {
56 int max_track = 0;
57 int last_track = -1;
58 int leadout = -1;
59 int len = (buf[0] << 8) | buf[1];
60 int session_type = -1;
61 int i;
62 for( i = 4; i<len; i+=11 ) {
63 int session = buf[i];
64 int adr = buf[i+1] >> 4;
65 int point = buf[i+3];
66 if( adr == 0x01 && point > 0 && point < 100 ) {
67 /* Track info */
68 int trackno = point-1;
69 if( point > max_track ) {
70 max_track = point;
71 }
72 disc->track[trackno].flags = (buf[i+1] & 0x0F) << 4;
73 disc->track[trackno].session = session - 1;
74 disc->track[trackno].lba = MSFTOLBA(buf[i+8],buf[i+9],buf[i+10]);
75 if( disc->track[trackno].flags & TRACK_DATA ) {
76 disc->track[trackno].mode = GDROM_MODE1;
77 } else {
78 disc->track[trackno].mode = GDROM_CDDA;
79 }
80 if( last_track != -1 ) {
81 disc->track[last_track].sector_count = disc->track[trackno].lba -
82 disc->track[last_track].lba;
83 }
84 last_track = trackno;
85 } else switch( (adr << 8) | point ) {
86 case 0x1A0: /* session info */
87 if( buf[i+9] == 0x20 ) {
88 session_type = IDE_DISC_CDROMXA;
89 } else {
90 session_type = IDE_DISC_CDROM;
91 }
92 disc->disc_type = session_type;
93 break;
94 case 0x1A2: /* leadout */
95 leadout = MSFTOLBA(buf[i+8], buf[i+9], buf[i+10]);
96 break;
97 }
98 }
99 disc->track_count = max_track;
101 if( leadout != -1 && last_track != -1 ) {
102 disc->track[last_track].sector_count = leadout - disc->track[last_track].lba;
103 }
104 }
.