PPC: e500mc: add missing IVORs to bitmap
[qemu.git] / hw / cdrom.c
1 /*
2 * QEMU ATAPI CD-ROM Emulator
3 *
4 * Copyright (c) 2006 Fabrice Bellard
5 *
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
28 #include "qemu-common.h"
29 #include "scsi.h"
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;
45
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;
89
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;
105
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;
117
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) {
142 *q++ = 0;
143 lba_to_msf(q, 0);
144 q += 3;
145 } else {
146 *q++ = 0;
147 *q++ = 0;
148 *q++ = 0;
149 *q++ = 0;
150 }
151
152 len = q - buf;
153 cpu_to_be16wu((uint16_t *)buf, len - 2);
154 return len;
155 }