symbian-qemu-0.9.1-12/qemu-symbian-svp/hw/cdrom.c
author Mike Kinghan <mikek@symbian.org>
Wed, 04 Aug 2010 10:56:22 +0100
branchGCC_SURGE
changeset 91 07b904f40417
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Provisional fix for bug 3508 - Persistent storage support breaks Linux compatibility. Enables libnvmemmory.so to be built and dynamically linked on Linux and rom boot reports persistent storage image created OK, but ROM then crashes.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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/*
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 * QEMU ATAPI CD-ROM Emulator
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 *
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 * Copyright (c) 2006 Fabrice Bellard
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
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 */
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/* ??? Most of the ATAPI emulation is still in ide.c.  It should be moved
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   here.  */
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#include "qemu-common.h"
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#include "scsi-disk.h"
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static void lba_to_msf(uint8_t *buf, int lba)
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{
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    lba += 150;
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    buf[0] = (lba / 75) / 60;
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    buf[1] = (lba / 75) % 60;
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    buf[2] = lba % 75;
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}
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/* same toc as bochs. Return -1 if error or the toc length */
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/* XXX: check this */
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int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track)
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{
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    uint8_t *q;
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    int len;
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    if (start_track > 1 && start_track != 0xaa)
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        return -1;
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    q = buf + 2;
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    *q++ = 1; /* first session */
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    *q++ = 1; /* last session */
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    if (start_track <= 1) {
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        *q++ = 0; /* reserved */
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        *q++ = 0x14; /* ADR, control */
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        *q++ = 1;    /* track number */
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        *q++ = 0; /* reserved */
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        if (msf) {
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            *q++ = 0; /* reserved */
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            lba_to_msf(q, 0);
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            q += 3;
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        } else {
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            /* sector 0 */
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            cpu_to_be32wu((uint32_t *)q, 0);
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            q += 4;
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        }
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    }
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    /* lead out track */
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    *q++ = 0; /* reserved */
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    *q++ = 0x16; /* ADR, control */
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    *q++ = 0xaa; /* track number */
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    *q++ = 0; /* reserved */
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    if (msf) {
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        *q++ = 0; /* reserved */
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        lba_to_msf(q, nb_sectors);
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        q += 3;
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    } else {
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        cpu_to_be32wu((uint32_t *)q, nb_sectors);
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        q += 4;
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    }
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    len = q - buf;
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    cpu_to_be16wu((uint16_t *)buf, len - 2);
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    return len;
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}
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/* mostly same info as PearPc */
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int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num)
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{
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    uint8_t *q;
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    int len;
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    q = buf + 2;
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    *q++ = 1; /* first session */
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    *q++ = 1; /* last session */
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    *q++ = 1; /* session number */
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    *q++ = 0x14; /* data track */
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    *q++ = 0; /* track number */
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    *q++ = 0xa0; /* lead-in */
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    *q++ = 0; /* min */
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    *q++ = 0; /* sec */
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    *q++ = 0; /* frame */
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    *q++ = 0;
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    *q++ = 1; /* first track */
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    *q++ = 0x00; /* disk type */
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    *q++ = 0x00;
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    *q++ = 1; /* session number */
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    *q++ = 0x14; /* data track */
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    *q++ = 0; /* track number */
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    *q++ = 0xa1;
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    *q++ = 0; /* min */
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    *q++ = 0; /* sec */
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    *q++ = 0; /* frame */
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    *q++ = 0;
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    *q++ = 1; /* last track */
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    *q++ = 0x00;
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    *q++ = 0x00;
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2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   118
    *q++ = 1; /* session number */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   119
    *q++ = 0x14; /* data track */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   120
    *q++ = 0; /* track number */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   121
    *q++ = 0xa2; /* lead-out */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   122
    *q++ = 0; /* min */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   123
    *q++ = 0; /* sec */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   124
    *q++ = 0; /* frame */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   125
    if (msf) {
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   126
        *q++ = 0; /* reserved */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   127
        lba_to_msf(q, nb_sectors);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   128
        q += 3;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   129
    } else {
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   130
        cpu_to_be32wu((uint32_t *)q, nb_sectors);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   131
        q += 4;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   132
    }
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   133
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   134
    *q++ = 1; /* session number */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   135
    *q++ = 0x14; /* ADR, control */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   136
    *q++ = 0;    /* track number */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   137
    *q++ = 1;    /* point */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   138
    *q++ = 0; /* min */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   139
    *q++ = 0; /* sec */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   140
    *q++ = 0; /* frame */
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   141
    if (msf) {
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   142
        *q++ = 0;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   143
        lba_to_msf(q, 0);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   144
        q += 3;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   145
    } else {
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   146
        *q++ = 0;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   147
        *q++ = 0;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   148
        *q++ = 0;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   149
        *q++ = 0;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   150
    }
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   151
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   152
    len = q - buf;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   153
    cpu_to_be16wu((uint16_t *)buf, len - 2);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   154
    return len;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   155
}