pbrook | 2e5d83b | 2006-05-25 23:58:51 +0000 | [diff] [blame] | 1 | /* |
| 2 | * QEMU ATAPI CD-ROM Emulator |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 3 | * |
pbrook | 2e5d83b | 2006-05-25 23:58:51 +0000 | [diff] [blame] | 4 | * Copyright (c) 2006 Fabrice Bellard |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 5 | * |
pbrook | 2e5d83b | 2006-05-25 23:58:51 +0000 | [diff] [blame] | 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | /* ??? Most of the ATAPI emulation is still in ide.c. It should be moved |
| 26 | here. */ |
| 27 | |
pbrook | 87ecb68 | 2007-11-17 17:14:51 +0000 | [diff] [blame] | 28 | #include "qemu-common.h" |
| 29 | #include "scsi-disk.h" |
pbrook | 2e5d83b | 2006-05-25 23:58:51 +0000 | [diff] [blame] | 30 | |
| 31 | static void lba_to_msf(uint8_t *buf, int lba) |
| 32 | { |
| 33 | lba += 150; |
| 34 | buf[0] = (lba / 75) / 60; |
| 35 | buf[1] = (lba / 75) % 60; |
| 36 | buf[2] = lba % 75; |
| 37 | } |
| 38 | |
| 39 | /* same toc as bochs. Return -1 if error or the toc length */ |
| 40 | /* XXX: check this */ |
| 41 | int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track) |
| 42 | { |
| 43 | uint8_t *q; |
| 44 | int len; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 45 | |
pbrook | 2e5d83b | 2006-05-25 23:58:51 +0000 | [diff] [blame] | 46 | if (start_track > 1 && start_track != 0xaa) |
| 47 | return -1; |
| 48 | q = buf + 2; |
| 49 | *q++ = 1; /* first session */ |
| 50 | *q++ = 1; /* last session */ |
| 51 | if (start_track <= 1) { |
| 52 | *q++ = 0; /* reserved */ |
| 53 | *q++ = 0x14; /* ADR, control */ |
| 54 | *q++ = 1; /* track number */ |
| 55 | *q++ = 0; /* reserved */ |
| 56 | if (msf) { |
| 57 | *q++ = 0; /* reserved */ |
| 58 | lba_to_msf(q, 0); |
| 59 | q += 3; |
| 60 | } else { |
| 61 | /* sector 0 */ |
| 62 | cpu_to_be32wu((uint32_t *)q, 0); |
| 63 | q += 4; |
| 64 | } |
| 65 | } |
| 66 | /* lead out track */ |
| 67 | *q++ = 0; /* reserved */ |
| 68 | *q++ = 0x16; /* ADR, control */ |
| 69 | *q++ = 0xaa; /* track number */ |
| 70 | *q++ = 0; /* reserved */ |
| 71 | if (msf) { |
| 72 | *q++ = 0; /* reserved */ |
| 73 | lba_to_msf(q, nb_sectors); |
| 74 | q += 3; |
| 75 | } else { |
| 76 | cpu_to_be32wu((uint32_t *)q, nb_sectors); |
| 77 | q += 4; |
| 78 | } |
| 79 | len = q - buf; |
| 80 | cpu_to_be16wu((uint16_t *)buf, len - 2); |
| 81 | return len; |
| 82 | } |
| 83 | |
| 84 | /* mostly same info as PearPc */ |
| 85 | int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num) |
| 86 | { |
| 87 | uint8_t *q; |
| 88 | int len; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 89 | |
pbrook | 2e5d83b | 2006-05-25 23:58:51 +0000 | [diff] [blame] | 90 | q = buf + 2; |
| 91 | *q++ = 1; /* first session */ |
| 92 | *q++ = 1; /* last session */ |
| 93 | |
| 94 | *q++ = 1; /* session number */ |
| 95 | *q++ = 0x14; /* data track */ |
| 96 | *q++ = 0; /* track number */ |
| 97 | *q++ = 0xa0; /* lead-in */ |
| 98 | *q++ = 0; /* min */ |
| 99 | *q++ = 0; /* sec */ |
| 100 | *q++ = 0; /* frame */ |
| 101 | *q++ = 0; |
| 102 | *q++ = 1; /* first track */ |
| 103 | *q++ = 0x00; /* disk type */ |
| 104 | *q++ = 0x00; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 105 | |
pbrook | 2e5d83b | 2006-05-25 23:58:51 +0000 | [diff] [blame] | 106 | *q++ = 1; /* session number */ |
| 107 | *q++ = 0x14; /* data track */ |
| 108 | *q++ = 0; /* track number */ |
| 109 | *q++ = 0xa1; |
| 110 | *q++ = 0; /* min */ |
| 111 | *q++ = 0; /* sec */ |
| 112 | *q++ = 0; /* frame */ |
| 113 | *q++ = 0; |
| 114 | *q++ = 1; /* last track */ |
| 115 | *q++ = 0x00; |
| 116 | *q++ = 0x00; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 117 | |
pbrook | 2e5d83b | 2006-05-25 23:58:51 +0000 | [diff] [blame] | 118 | *q++ = 1; /* session number */ |
| 119 | *q++ = 0x14; /* data track */ |
| 120 | *q++ = 0; /* track number */ |
| 121 | *q++ = 0xa2; /* lead-out */ |
| 122 | *q++ = 0; /* min */ |
| 123 | *q++ = 0; /* sec */ |
| 124 | *q++ = 0; /* frame */ |
| 125 | if (msf) { |
| 126 | *q++ = 0; /* reserved */ |
| 127 | lba_to_msf(q, nb_sectors); |
| 128 | q += 3; |
| 129 | } else { |
| 130 | cpu_to_be32wu((uint32_t *)q, nb_sectors); |
| 131 | q += 4; |
| 132 | } |
| 133 | |
| 134 | *q++ = 1; /* session number */ |
| 135 | *q++ = 0x14; /* ADR, control */ |
| 136 | *q++ = 0; /* track number */ |
| 137 | *q++ = 1; /* point */ |
| 138 | *q++ = 0; /* min */ |
| 139 | *q++ = 0; /* sec */ |
| 140 | *q++ = 0; /* frame */ |
| 141 | if (msf) { |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 142 | *q++ = 0; |
pbrook | 2e5d83b | 2006-05-25 23:58:51 +0000 | [diff] [blame] | 143 | lba_to_msf(q, 0); |
| 144 | q += 3; |
| 145 | } else { |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 146 | *q++ = 0; |
| 147 | *q++ = 0; |
| 148 | *q++ = 0; |
| 149 | *q++ = 0; |
pbrook | 2e5d83b | 2006-05-25 23:58:51 +0000 | [diff] [blame] | 150 | } |
| 151 | |
| 152 | len = q - buf; |
| 153 | cpu_to_be16wu((uint16_t *)buf, len - 2); |
| 154 | return len; |
| 155 | } |