qemu/hw/block/cdrom.c
Peter Maydell 6bd194ab99 bswap.h: Remove cpu_to_be32wu()
Replace the legacy cpu_to_be32wu() with stl_be_p().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 1383669517-25598-8-git-send-email-peter.maydell@linaro.org
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
2013-11-05 19:57:47 -08:00

156 lines
4.1 KiB
C

/*
* QEMU ATAPI CD-ROM Emulator
*
* Copyright (c) 2006 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/* ??? Most of the ATAPI emulation is still in ide.c. It should be moved
here. */
#include "qemu-common.h"
#include "hw/scsi/scsi.h"
static void lba_to_msf(uint8_t *buf, int lba)
{
lba += 150;
buf[0] = (lba / 75) / 60;
buf[1] = (lba / 75) % 60;
buf[2] = lba % 75;
}
/* same toc as bochs. Return -1 if error or the toc length */
/* XXX: check this */
int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track)
{
uint8_t *q;
int len;
if (start_track > 1 && start_track != 0xaa)
return -1;
q = buf + 2;
*q++ = 1; /* first session */
*q++ = 1; /* last session */
if (start_track <= 1) {
*q++ = 0; /* reserved */
*q++ = 0x14; /* ADR, control */
*q++ = 1; /* track number */
*q++ = 0; /* reserved */
if (msf) {
*q++ = 0; /* reserved */
lba_to_msf(q, 0);
q += 3;
} else {
/* sector 0 */
stl_be_p(q, 0);
q += 4;
}
}
/* lead out track */
*q++ = 0; /* reserved */
*q++ = 0x16; /* ADR, control */
*q++ = 0xaa; /* track number */
*q++ = 0; /* reserved */
if (msf) {
*q++ = 0; /* reserved */
lba_to_msf(q, nb_sectors);
q += 3;
} else {
stl_be_p(q, nb_sectors);
q += 4;
}
len = q - buf;
stw_be_p(buf, len - 2);
return len;
}
/* mostly same info as PearPc */
int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num)
{
uint8_t *q;
int len;
q = buf + 2;
*q++ = 1; /* first session */
*q++ = 1; /* last session */
*q++ = 1; /* session number */
*q++ = 0x14; /* data track */
*q++ = 0; /* track number */
*q++ = 0xa0; /* lead-in */
*q++ = 0; /* min */
*q++ = 0; /* sec */
*q++ = 0; /* frame */
*q++ = 0;
*q++ = 1; /* first track */
*q++ = 0x00; /* disk type */
*q++ = 0x00;
*q++ = 1; /* session number */
*q++ = 0x14; /* data track */
*q++ = 0; /* track number */
*q++ = 0xa1;
*q++ = 0; /* min */
*q++ = 0; /* sec */
*q++ = 0; /* frame */
*q++ = 0;
*q++ = 1; /* last track */
*q++ = 0x00;
*q++ = 0x00;
*q++ = 1; /* session number */
*q++ = 0x14; /* data track */
*q++ = 0; /* track number */
*q++ = 0xa2; /* lead-out */
*q++ = 0; /* min */
*q++ = 0; /* sec */
*q++ = 0; /* frame */
if (msf) {
*q++ = 0; /* reserved */
lba_to_msf(q, nb_sectors);
q += 3;
} else {
stl_be_p(q, nb_sectors);
q += 4;
}
*q++ = 1; /* session number */
*q++ = 0x14; /* ADR, control */
*q++ = 0; /* track number */
*q++ = 1; /* point */
*q++ = 0; /* min */
*q++ = 0; /* sec */
*q++ = 0; /* frame */
if (msf) {
*q++ = 0;
lba_to_msf(q, 0);
q += 3;
} else {
*q++ = 0;
*q++ = 0;
*q++ = 0;
*q++ = 0;
}
len = q - buf;
stw_be_p(buf, len - 2);
return len;
}