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/* Copyright 2004-2005 Theo Berkau
Copyright 2004-2006 Guillaume Duhamel
Copyright 2005 Joost Peters
This file is part of Yabause.
Yabause is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Yabause is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Yabause; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <linux/cdrom.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#ifdef LINUX_CDROM_H_IS_BROKEN
#include <limits.h>
#endif
#include "cdbase.h"
#include "debug.h"
static int LinuxCDInit(const char *);
static void LinuxCDDeInit(void);
static s32 LinuxCDReadTOC(u32 *);
static int LinuxCDGetStatus(void);
static int LinuxCDReadSectorFAD(u32, void *);
static void LinuxCDReadAheadFAD(u32);
CDInterface ArchCD = {
CDCORE_ARCH,
"Linux CD Drive",
LinuxCDInit,
LinuxCDDeInit,
LinuxCDGetStatus,
LinuxCDReadTOC,
LinuxCDReadSectorFAD,
LinuxCDReadAheadFAD,
};
static int hCDROM;
static int LinuxCDInit(const char * cdrom_name) {
if ((hCDROM = open(cdrom_name, O_RDONLY | O_NONBLOCK)) == -1) {
return -1;
}
LOG("CDInit (%s) OK\n", cdrom_name);
return 0;
}
static void LinuxCDDeInit(void) {
if (hCDROM != -1) {
close(hCDROM);
}
LOG("CDDeInit OK\n");
}
static s32 LinuxCDReadTOC(u32 * TOC)
{
struct cdrom_tochdr ctTOC;
struct cdrom_tocentry ctTOCent;
int i;
int add150 = 0;
ctTOCent.cdte_format = CDROM_LBA;
if (hCDROM != -1)
{
memset(TOC, 0xFF, 0xCC * 2);
memset(&ctTOC, 0xFF, sizeof(struct cdrom_tochdr));
if (ioctl(hCDROM, CDROMREADTOCHDR, &ctTOC) == -1) {
return 0;
}
ctTOCent.cdte_track = ctTOC.cdth_trk0;
ioctl(hCDROM, CDROMREADTOCENTRY, &ctTOCent);
if (ctTOCent.cdte_addr.lba == 0) add150 = 150;
TOC[0] = ((ctTOCent.cdte_ctrl << 28) |
(ctTOCent.cdte_adr << 24) |
(ctTOCent.cdte_addr.lba + add150));
// convert TOC to saturn format
for (i = ctTOC.cdth_trk0 + 1; i <= ctTOC.cdth_trk1; i++)
{
ctTOCent.cdte_track = i;
ioctl(hCDROM, CDROMREADTOCENTRY, &ctTOCent);
TOC[i - 1] = (ctTOCent.cdte_ctrl << 28) |
(ctTOCent.cdte_adr << 24) |
(ctTOCent.cdte_addr.lba + add150);
}
// Do First, Last, and Lead out sections here
ctTOCent.cdte_track = ctTOC.cdth_trk0;
ioctl(hCDROM, CDROMREADTOCENTRY, &ctTOCent);
TOC[99] = (ctTOCent.cdte_ctrl << 28) |
(ctTOCent.cdte_adr << 24) |
(ctTOC.cdth_trk0 << 16);
ctTOCent.cdte_track = ctTOC.cdth_trk1;
ioctl(hCDROM, CDROMREADTOCENTRY, &ctTOCent);
TOC[100] = (ctTOCent.cdte_ctrl << 28) |
(ctTOCent.cdte_adr << 24) |
(ctTOC.cdth_trk1 << 16);
ctTOCent.cdte_track = CDROM_LEADOUT;
ioctl(hCDROM, CDROMREADTOCENTRY, &ctTOCent);
TOC[101] = (ctTOCent.cdte_ctrl << 28) |
(ctTOCent.cdte_adr << 24) |
(ctTOCent.cdte_addr.lba + add150);
return (0xCC * 2);
}
return 0;
}
static int LinuxCDGetStatus(void) {
// 0 - CD Present, disc spinning
// 1 - CD Present, disc not spinning
// 2 - CD not present
// 3 - Tray open
// see ../windows/cd.cc for more info
int ret = ioctl(hCDROM, CDROM_DRIVE_STATUS, CDSL_CURRENT);
switch(ret) {
case CDS_DISC_OK:
return 0;
case CDS_NO_DISC:
return 2;
case CDS_TRAY_OPEN:
return 3;
}
// guess it's ok to say there's no disc here...
return 2;
}
static int LinuxCDReadSectorFAD(u32 FAD, void *buffer) {
union {
struct cdrom_msf msf;
char bigbuf[2352];
} position;
if (hCDROM != -1)
{
position.msf.cdmsf_min0 = FAD / 4500;
position.msf.cdmsf_sec0 = (FAD % 4500) / 75;
position.msf.cdmsf_frame0 = FAD % 75;
if (ioctl(hCDROM, CDROMREADRAW, &position) == -1) {
return 0;
}
memcpy(buffer, position.bigbuf, 2352);
return 1;
}
return 0;
}
static void LinuxCDReadAheadFAD(UNUSED u32 FAD)
{
// No-op
}
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