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Bochs/bochs/iodev/cdrom.cc
Bryce Denney 7fdc7303c2 - add "void reset(unsigned type)" method to every I/O device. 
Some devices already had one.  Some I had to add an empty one.
  I did a little cleaning of init() methods to make them more uniform
  but generally I left them alone.
- I also put these exact diffs into a patch "patch.iodev-add-reset"
  in case I want to revert these changes for some reason, for example
  if they break an old patch.  It should be deleted after a while.
2002-08-27 19:54:46 +00:00

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/////////////////////////////////////////////////////////////////////////
// $Id: cdrom.cc,v 1.38 2002-08-27 19:54:46 bdenney Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// These are the low-level CDROM functions which are called
// from 'harddrv.cc'. They effect the OS specific functionality
// needed by the CDROM emulation in 'harddrv.cc'. Mostly, just
// ioctl() calls and such. Should be fairly easy to add support
// for your OS if it is not supported yet.
#include "bochs.h"
#define LOG_THIS /* no SMF tricks here, not needed */
extern "C" {
#include <errno.h>
}
#ifdef __linux__
extern "C" {
#include <sys/ioctl.h>
#include <linux/cdrom.h>
// I use the framesize in non OS specific code too
#define BX_CD_FRAMESIZE CD_FRAMESIZE
}
#endif
#ifdef __GNU__
extern "C" {
#include <sys/ioctl.h>
#define BX_CD_FRAMESIZE 2048
#define CD_FRAMESIZE 2048
}
#endif
#ifdef __sun
extern "C" {
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/cdio.h>
#define BX_CD_FRAMESIZE CDROM_BLK_2048
}
#endif /* __sun */
#ifdef __BEOS__
#include "cdrom_beos.h"
#define BX_CD_FRAMESIZE 2048
#endif
#if (defined (__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__))
// OpenBSD pre version 2.7 may require extern "C" { } structure around
// all the includes, because the i386 sys/disklabel.h contains code which
// c++ considers invalid.
#include <sys/types.h>
#include <sys/param.h>
#include <sys/file.h>
#include <sys/cdio.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
// XXX
#define BX_CD_FRAMESIZE 2048
#define CD_FRAMESIZE 2048
#endif
#ifdef WIN32
#include <windows.h>
#include <winioctl.h>
#include "aspi-win32.h"
#include "scsidefs.h"
DWORD (*GetASPI32SupportInfo)(void);
DWORD (*SendASPI32Command)(LPSRB);
BOOL (*GetASPI32Buffer)(PASPI32BUFF);
BOOL (*FreeASPI32Buffer)(PASPI32BUFF);
BOOL (*TranslateASPI32Address)(PDWORD,PDWORD);
DWORD (*GetASPI32DLLVersion)(void);
static BOOL bUseASPI = FALSE;
static BOOL bHaveDev = FALSE;
static int hid = 0;
static int tid = 0;
static int lun = 0;
#define BX_CD_FRAMESIZE 2048
#define CD_FRAMESIZE 2048
HANDLE hFile = NULL;
#endif
#include <stdio.h>
#ifdef WIN32
int ReadCDSector(unsigned int hid, unsigned int tid, unsigned int lun, unsigned long frame, unsigned char *buf, int bufsize)
{
HANDLE hEventSRB;
SRB_ExecSCSICmd srb;
DWORD dwStatus;
hEventSRB = CreateEvent(NULL, TRUE, FALSE, NULL);
memset(&srb,0,sizeof(SRB_ExecSCSICmd));
srb.SRB_Cmd = SC_EXEC_SCSI_CMD;
srb.SRB_HaId = hid;
srb.SRB_Target = tid;
srb.SRB_Lun = lun;
srb.SRB_Flags = SRB_DIR_IN | SRB_EVENT_NOTIFY;
srb.SRB_SenseLen = SENSE_LEN;
srb.SRB_PostProc = hEventSRB;
srb.SRB_BufPointer = buf;
srb.SRB_BufLen = bufsize;
srb.SRB_CDBLen = 10;
srb.CDBByte[0] = SCSI_READ10;
srb.CDBByte[2] = frame>>24;
srb.CDBByte[3] = frame>>16;
srb.CDBByte[4] = frame>>8;
srb.CDBByte[5] = frame;
srb.CDBByte[7] = 0;
srb.CDBByte[8] = 1; /* read 1 frames */
ResetEvent(hEventSRB);
dwStatus = SendASPI32Command((SRB *)&srb);
if(dwStatus == SS_PENDING) {
WaitForSingleObject(hEventSRB, 100000);
}
CloseHandle(hEventSRB);
return (srb.SRB_TargStat == STATUS_GOOD);
}
int GetCDCapacity(unsigned int hid, unsigned int tid, unsigned int lun)
{
HANDLE hEventSRB;
SRB_ExecSCSICmd srb;
DWORD dwStatus;
unsigned char buf[8];
hEventSRB = CreateEvent(NULL, TRUE, FALSE, NULL);
memset(&buf, 0, sizeof(buf));
memset(&srb,0,sizeof(SRB_ExecSCSICmd));
srb.SRB_Cmd = SC_EXEC_SCSI_CMD;
srb.SRB_HaId = hid;
srb.SRB_Target = tid;
srb.SRB_Lun = lun;
srb.SRB_Flags = SRB_DIR_IN | SRB_EVENT_NOTIFY;
srb.SRB_SenseLen = SENSE_LEN;
srb.SRB_PostProc = hEventSRB;
srb.SRB_BufPointer = (unsigned char *)buf;
srb.SRB_BufLen = 8;
srb.SRB_CDBLen = 10;
srb.CDBByte[0] = SCSI_READCDCAP;
srb.CDBByte[2] = 0;
srb.CDBByte[3] = 0;
srb.CDBByte[4] = 0;
srb.CDBByte[5] = 0;
srb.CDBByte[8] = 0;
ResetEvent(hEventSRB);
dwStatus = SendASPI32Command((SRB *)&srb);
if(dwStatus == SS_PENDING) {
WaitForSingleObject(hEventSRB, 100000);
}
CloseHandle(hEventSRB);
return ((buf[0] << 24) + (buf[1] << 16) + (buf[2] << 8) + buf[3]) * ((buf[4] << 24) + (buf[5] << 16) + (buf[6] << 8) + buf[7]);
}
#endif
cdrom_interface::cdrom_interface(char *dev)
{
put("CD");
settype(CDLOG);
fd = -1; // File descriptor not yet allocated
if ( dev == NULL )
path = NULL;
else {
path = strdup(dev);
}
using_file=0;
}
void
cdrom_interface::init(void) {
BX_DEBUG(("Init $Id: cdrom.cc,v 1.38 2002-08-27 19:54:46 bdenney Exp $"));
BX_INFO(("file = '%s'",path));
}
cdrom_interface::~cdrom_interface(void)
{
if (fd >= 0)
close(fd);
if (path)
free(path);
BX_DEBUG(("Exit"));
}
void
cdrom_interface::reset(unsigned type) {
}
bool
cdrom_interface::insert_cdrom(char *dev)
{
unsigned char buffer[BX_CD_FRAMESIZE];
ssize_t ret;
// Load CD-ROM. Returns false if CD is not ready.
if (dev != NULL) path = strdup(dev);
BX_INFO (("load cdrom with path=%s", path));
#ifdef WIN32
char drive[256];
OSVERSIONINFO osi;
if ( (path[1] == ':') && (strlen(path) == 2) )
{
osi.dwOSVersionInfoSize = sizeof(osi);
GetVersionEx(&osi);
if(osi.dwPlatformId == VER_PLATFORM_WIN32_NT) {
// Use direct device access under windows NT/2k
// With all the backslashes it's hard to see, but to open D: drive
// the name would be: \\.\d:
sprintf(drive, "\\\\.\\%s", path);
using_file = 0;
BX_INFO (("Using direct access for cdrom."));
// This trick only works for Win2k and WinNT, so warn the user of that.
} else {
BX_INFO(("Using ASPI for cdrom."));
bUseASPI = TRUE;
}
}
else
{
strcpy(drive,path);
using_file = 1;
bUseASPI = FALSE;
BX_INFO (("Opening image file as a cd"));
}
if(bUseASPI) {
DWORD d, cnt, max;
int i, j, k;
SRB_HAInquiry sh;
SRB_GDEVBlock sd;
HINSTANCE hASPI = LoadLibrary("WNASPI32.DLL");
if(hASPI) {
SendASPI32Command = (DWORD(*)(LPSRB))GetProcAddress( hASPI, "SendASPI32Command" );
GetASPI32DLLVersion = (DWORD(*)(void))GetProcAddress( hASPI, "GetASPI32DLLVersion" );
GetASPI32SupportInfo = (DWORD(*)(void))GetProcAddress( hASPI, "GetASPI32SupportInfo" );
BX_INFO(("Using first CDROM. Please upgrade your ASPI drivers to version 4.01 or later if you wish to specify a cdrom driver."));
d = GetASPI32SupportInfo();
cnt = LOBYTE(LOWORD(d));
for(i = 0; i < cnt; i++) {
memset(&sh, 0, sizeof(sh));
sh.SRB_Cmd = SC_HA_INQUIRY;
sh.SRB_HaId = i;
SendASPI32Command((LPSRB)&sh);
if(sh.SRB_Status != SS_COMP)
continue;
max = (int)sh.HA_Unique[3];
for(j = 0; j < max; j++) {
for(k = 0; k < 8; k++) {
memset(&sd, 0, sizeof(sd));
sd.SRB_Cmd = SC_GET_DEV_TYPE;
sd.SRB_HaId = i;
sd.SRB_Target = j;
sd.SRB_Lun = k;
SendASPI32Command((LPSRB)&sd);
if(sd.SRB_Status == SS_COMP) {
if(sd.SRB_DeviceType == DTYPE_CDROM) {
hid = i;
tid = j;
lun = k;
bHaveDev = TRUE;
}
}
if(bHaveDev) break;
}
if(bHaveDev) break;
}
}
} else {
BX_PANIC(("Could not load ASPI drivers, so cdrom access will fail"));
}
fd=1;
} else {
BX_INFO(("Using direct access for CDROM"));
hFile=CreateFile((char *)&drive, GENERIC_READ, 0 , NULL, OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, NULL);
if (hFile !=(void *)0xFFFFFFFF)
fd=1;
}
#else
// all platforms except win32
fd = open(path, O_RDONLY);
#endif
if (fd < 0) {
BX_ERROR(( "open cd failed for %s: %s", path, strerror(errno)));
return(false);
}
// I just see if I can read a sector to verify that a
// CD is in the drive and readable.
#ifdef WIN32
if(bUseASPI) {
return ReadCDSector(hid, tid, lun, 0, buffer, BX_CD_FRAMESIZE);
} else {
ReadFile(hFile, (void *) buffer, BX_CD_FRAMESIZE, (unsigned long *) &ret, NULL);
if (ret < 0) {
CloseHandle(hFile);
fd = -1;
BX_DEBUG(( "insert_cdrom: read returns error." ));
return(false);
}
}
#else
// do fstat to determine if it's a file or a device, then set using_file.
struct stat stat_buf;
ret = fstat (fd, &stat_buf);
if (ret) {
BX_PANIC (("fstat cdrom file returned error: %s", strerror (errno)));
}
if (S_ISREG (stat_buf.st_mode)) {
using_file = 1;
BX_INFO (("Opening image file %s as a cd.", path));
} else {
using_file = 0;
BX_INFO (("Using direct access for cdrom."));
}
ret = read(fd, &buffer, BX_CD_FRAMESIZE);
if (ret < 0) {
close(fd);
fd = -1;
BX_DEBUG(( "insert_cdrom: read returns error: %s", strerror (errno) ));
return(false);
}
#endif
return(true);
}
void
cdrom_interface::eject_cdrom()
{
// Logically eject the CD. I suppose we could stick in
// some ioctl() calls to really eject the CD as well.
if (fd >= 0) {
#if (defined(__OpenBSD__) || defined(__FreeBSD__))
(void) ioctl (fd, CDIOCALLOW);
if (ioctl (fd, CDIOCEJECT) < 0)
BX_DEBUG(( "eject_cdrom: eject returns error." ));
#endif
#ifdef WIN32
if (using_file == 0)
{
if(bUseASPI) {
} else {
DWORD lpBytesReturned;
DeviceIoControl(hFile, IOCTL_STORAGE_EJECT_MEDIA, NULL, 0, NULL, 0, &lpBytesReturned, NULL);
}
}
#endif
#if __linux__
if (!using_file)
ioctl (fd, CDROMEJECT, NULL);
#endif
close(fd);
fd = -1;
}
}
bool
cdrom_interface::read_toc(uint8* buf, int* length, bool msf, int start_track)
{
// Read CD TOC. Returns false if start track is out of bounds.
if (fd < 0) {
BX_PANIC(("cdrom: read_toc: file not open."));
}
#ifdef WIN32
if (1) { // This is a hack and works okay if there's one rom track only
#else
if (using_file) {
#endif
if ((start_track != 1) && (start_track != 0xaa))
return false;
buf[2] = 1;
buf[3] = 1;
int len = 4;
if (start_track == 1) {
buf[len++] = 0; // Reserved
buf[len++] = 0x14; // ADR, control
buf[len++] = 1; // Track number
buf[len++] = 0; // Reserved
// Start address
if (msf) {
buf[len++] = 0; // reserved
buf[len++] = 0; // minute
buf[len++] = 2; // second
buf[len++] = 0; // frame
} else {
buf[len++] = 0;
buf[len++] = 0;
buf[len++] = 0;
buf[len++] = 0; // logical sector 0
}
}
// Lead out track
buf[len++] = 0; // Reserved
buf[len++] = 0x16; // ADR, control
buf[len++] = 0xaa; // Track number
buf[len++] = 0; // Reserved
uint32 blocks = capacity();
// Start address
if (msf) {
buf[len++] = 0; // reserved
buf[len++] = (uint8)(((blocks + 150) / 75) / 60); // minute
buf[len++] = (uint8)(((blocks + 150) / 75) % 60); // second
buf[len++] = (uint8)((blocks + 150) % 75); // frame;
} else {
buf[len++] = (blocks >> 24) & 0xff;
buf[len++] = (blocks >> 16) & 0xff;
buf[len++] = (blocks >> 8) & 0xff;
buf[len++] = (blocks >> 0) & 0xff;
}
buf[0] = ((len-2) >> 8) & 0xff;
buf[1] = (len-2) & 0xff;
*length = len;
return true;
}
// all these implementations below are the platform-dependent code required
// to read the TOC from a physical cdrom.
#ifdef WIN32
{
/* #define IOCTL_CDROM_BASE FILE_DEVICE_CD_ROM
#define IOCTL_CDROM_READ_TOC CTL_CODE(IOCTL_CDROM_BASE, 0x0000, METHOD_BUFFERED, FILE_READ_ACCESS)
unsigned long iBytesReturned;
DeviceIoControl(hFile, IOCTL_CDROM_READ_TOC, NULL, 0, NULL, 0, &iBytesReturned, NULL); */
BX_ERROR (("WARNING: read_toc is not implemented, just returning length=1"));
*length = 1;
return true;
}
#elif __linux__ || defined(__sun)
{
struct cdrom_tochdr tochdr;
if (ioctl(fd, CDROMREADTOCHDR, &tochdr))
BX_PANIC(("cdrom: read_toc: READTOCHDR failed."));
if ((start_track > tochdr.cdth_trk1) && (start_track != 0xaa))
return false;
buf[2] = tochdr.cdth_trk0;
buf[3] = tochdr.cdth_trk1;
if (start_track < tochdr.cdth_trk0)
start_track = tochdr.cdth_trk0;
int len = 4;
for (int i = start_track; i <= tochdr.cdth_trk1; i++) {
struct cdrom_tocentry tocentry;
tocentry.cdte_format = (msf) ? CDROM_MSF : CDROM_LBA;
tocentry.cdte_track = i;
if (ioctl(fd, CDROMREADTOCENTRY, &tocentry))
BX_PANIC(("cdrom: read_toc: READTOCENTRY failed."));
buf[len++] = 0; // Reserved
buf[len++] = (tocentry.cdte_adr << 4) | tocentry.cdte_ctrl ; // ADR, control
buf[len++] = i; // Track number
buf[len++] = 0; // Reserved
// Start address
if (msf) {
buf[len++] = 0; // reserved
buf[len++] = tocentry.cdte_addr.msf.minute;
buf[len++] = tocentry.cdte_addr.msf.second;
buf[len++] = tocentry.cdte_addr.msf.frame;
} else {
buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 24) & 0xff;
buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 16) & 0xff;
buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 8) & 0xff;
buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 0) & 0xff;
}
}
// Lead out track
struct cdrom_tocentry tocentry;
tocentry.cdte_format = (msf) ? CDROM_MSF : CDROM_LBA;
#ifdef CDROM_LEADOUT
tocentry.cdte_track = CDROM_LEADOUT;
#else
tocentry.cdte_track = 0xaa;
#endif
if (ioctl(fd, CDROMREADTOCENTRY, &tocentry))
BX_PANIC(("cdrom: read_toc: READTOCENTRY lead-out failed."));
buf[len++] = 0; // Reserved
buf[len++] = (tocentry.cdte_adr << 4) | tocentry.cdte_ctrl ; // ADR, control
buf[len++] = 0xaa; // Track number
buf[len++] = 0; // Reserved
// Start address
if (msf) {
buf[len++] = 0; // reserved
buf[len++] = tocentry.cdte_addr.msf.minute;
buf[len++] = tocentry.cdte_addr.msf.second;
buf[len++] = tocentry.cdte_addr.msf.frame;
} else {
buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 24) & 0xff;
buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 16) & 0xff;
buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 8) & 0xff;
buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 0) & 0xff;
}
buf[0] = ((len-2) >> 8) & 0xff;
buf[1] = (len-2) & 0xff;
*length = len;
return true;
}
#elif (defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__))
{
struct ioc_toc_header h;
struct ioc_read_toc_entry t;
if (ioctl (fd, CDIOREADTOCHEADER, &h) < 0)
BX_PANIC(("cdrom: read_toc: READTOCHDR failed."));
if ((start_track > h.ending_track) && (start_track != 0xaa))
return false;
buf[2] = h.starting_track;
buf[3] = h.ending_track;
if (start_track < h.starting_track)
start_track = h.starting_track;
int len = 4;
for (int i = start_track; i <= h.ending_track; i++) {
struct cd_toc_entry tocentry;
t.address_format = (msf) ? CD_MSF_FORMAT : CD_LBA_FORMAT;
t.starting_track = i;
t.data_len = sizeof(tocentry);
t.data = &tocentry;
if (ioctl (fd, CDIOREADTOCENTRYS, &tocentry) < 0)
BX_PANIC(("cdrom: read_toc: READTOCENTRY failed."));
buf[len++] = 0; // Reserved
buf[len++] = (tocentry.addr_type << 4) | tocentry.control ; // ADR, control
buf[len++] = i; // Track number
buf[len++] = 0; // Reserved
// Start address
if (msf) {
buf[len++] = 0; // reserved
buf[len++] = tocentry.addr.msf.minute;
buf[len++] = tocentry.addr.msf.second;
buf[len++] = tocentry.addr.msf.frame;
} else {
buf[len++] = (((unsigned)tocentry.addr.lba) >> 24) & 0xff;
buf[len++] = (((unsigned)tocentry.addr.lba) >> 16) & 0xff;
buf[len++] = (((unsigned)tocentry.addr.lba) >> 8) & 0xff;
buf[len++] = (((unsigned)tocentry.addr.lba) >> 0) & 0xff;
}
}
// Lead out track
struct cd_toc_entry tocentry;
t.address_format = (msf) ? CD_MSF_FORMAT : CD_LBA_FORMAT;
t.starting_track = 0xaa;
t.data_len = sizeof(tocentry);
t.data = &tocentry;
if (ioctl (fd, CDIOREADTOCENTRYS, &tocentry) < 0)
BX_PANIC(("cdrom: read_toc: READTOCENTRY lead-out failed."));
buf[len++] = 0; // Reserved
buf[len++] = (tocentry.addr_type << 4) | tocentry.control ; // ADR, control
buf[len++] = 0xaa; // Track number
buf[len++] = 0; // Reserved
// Start address
if (msf) {
buf[len++] = 0; // reserved
buf[len++] = tocentry.addr.msf.minute;
buf[len++] = tocentry.addr.msf.second;
buf[len++] = tocentry.addr.msf.frame;
} else {
buf[len++] = (((unsigned)tocentry.addr.lba) >> 24) & 0xff;
buf[len++] = (((unsigned)tocentry.addr.lba) >> 16) & 0xff;
buf[len++] = (((unsigned)tocentry.addr.lba) >> 8) & 0xff;
buf[len++] = (((unsigned)tocentry.addr.lba) >> 0) & 0xff;
}
buf[0] = ((len-2) >> 8) & 0xff;
buf[1] = (len-2) & 0xff;
*length = len;
return true;
}
#else
BX_INFO(("read_toc: your OS is not supported yet."));
return(false); // OS not supported yet, return false always.
#endif
}
uint32
cdrom_interface::capacity()
{
// Return CD-ROM capacity. I believe you want to return
// the number of blocks of capacity the actual media has.
#if !defined WIN32
// win32 has its own way of doing this
if (using_file) {
// return length of the image file
struct stat stat_buf;
int ret = fstat (fd, &stat_buf);
if (ret) {
BX_PANIC (("fstat on cdrom image returned err: %s", strerror(errno)));
}
BX_INFO (("cdrom size is %d bytes", stat_buf.st_size));
if ((stat_buf.st_size % 2048) != 0) {
BX_ERROR (("expected cdrom image to be a multiple of 2048 bytes"));
}
return stat_buf.st_size / 2048;
}
#endif
#ifdef __BEOS__
return GetNumDeviceBlocks(fd, BX_CD_FRAMESIZE);
#elif defined(__sun)
{
struct stat buf = {0};
if (fd < 0) {
BX_PANIC(("cdrom: capacity: file not open."));
}
if( fstat(fd, &buf) != 0 )
BX_PANIC(("cdrom: capacity: stat() failed."));
return(buf.st_size);
}
#elif (defined(__NetBSD__) || defined(__OpenBSD__))
{
// We just read the disklabel, imagine that...
struct disklabel lp;
if (fd < 0)
BX_PANIC(("cdrom: capacity: file not open."));
if (ioctl(fd, DIOCGDINFO, &lp) < 0)
BX_PANIC(("cdrom: ioctl(DIOCGDINFO) failed"));
BX_DEBUG(( "capacity: %u", lp.d_secperunit ));
return(lp.d_secperunit);
}
#elif defined(__linux__)
{
// Read the TOC to get the data size, since BLKGETSIZE doesn't work on
// non-ATAPI drives. This is based on Keith Jones code below.
// <splite@purdue.edu> 21 June 2001
int i, dtrk_lba, num_sectors;
int dtrk = 0;
struct cdrom_tochdr td;
struct cdrom_tocentry te;
if (fd < 0)
BX_PANIC(("cdrom: capacity: file not open."));
if (ioctl(fd, CDROMREADTOCHDR, &td) < 0)
BX_PANIC(("cdrom: ioctl(CDROMREADTOCHDR) failed"));
num_sectors = -1;
dtrk_lba = -1;
for (i = td.cdth_trk0; i <= td.cdth_trk1; i++) {
te.cdte_track = i;
te.cdte_format = CDROM_LBA;
if (ioctl(fd, CDROMREADTOCENTRY, &te) < 0)
BX_PANIC(("cdrom: ioctl(CDROMREADTOCENTRY) failed"));
if (dtrk_lba != -1) {
num_sectors = te.cdte_addr.lba - dtrk_lba;
break;
}
if (te.cdte_ctrl & CDROM_DATA_TRACK) {
dtrk = i;
dtrk_lba = te.cdte_addr.lba;
}
}
if (num_sectors < 0) {
if (dtrk_lba != -1) {
te.cdte_track = CDROM_LEADOUT;
te.cdte_format = CDROM_LBA;
if (ioctl(fd, CDROMREADTOCENTRY, &te) < 0)
BX_PANIC(("cdrom: ioctl(CDROMREADTOCENTRY) failed"));
num_sectors = te.cdte_addr.lba - dtrk_lba;
} else
BX_PANIC(("cdrom: no data track found"));
}
BX_INFO(("cdrom: Data track %d, length %d", dtrk, num_sectors));
return(num_sectors);
}
#elif defined(__FreeBSD__)
{
// Read the TOC to get the data size, since disklabel doesn't appear
// to work, sadly.
// Keith Jones, 16 January 2000
#define MAX_TRACKS 100
int i, num_tracks, num_sectors;
struct ioc_toc_header td;
struct ioc_read_toc_entry rte;
struct cd_toc_entry toc_buffer[MAX_TRACKS + 1];
if (fd < 0)
BX_PANIC(("cdrom: capacity: file not open."));
if (ioctl(fd, CDIOREADTOCHEADER, &td) < 0)
BX_PANIC(("cdrom: ioctl(CDIOREADTOCHEADER) failed"));
num_tracks = (td.ending_track - td.starting_track) + 1;
if (num_tracks > MAX_TRACKS)
BX_PANIC(("cdrom: TOC is too large"));
rte.address_format = CD_LBA_FORMAT;
rte.starting_track = td.starting_track;
rte.data_len = (num_tracks + 1) * sizeof(struct cd_toc_entry);
rte.data = toc_buffer;
if (ioctl(fd, CDIOREADTOCENTRYS, &rte) < 0)
BX_PANIC(("cdrom: ioctl(CDIOREADTOCENTRYS) failed"));
num_sectors = -1;
for (i = 0; i < num_tracks; i++) {
if (rte.data[i].control & 4) { /* data track */
num_sectors = ntohl(rte.data[i + 1].addr.lba)
- ntohl(rte.data[i].addr.lba);
BX_INFO(( "cdrom: Data track %d, length %d",
rte.data[i].track, num_sectors));
break;
}
}
if (num_sectors < 0)
BX_PANIC(("cdrom: no data track found"));
return(num_sectors);
}
#elif defined WIN32
{
if(bUseASPI) {
return (GetCDCapacity(hid, tid, lun) / 2352);
} else {
unsigned long FileSize;
return (GetFileSize(hFile, &FileSize) / 2048);
}
}
#else
BX_ERROR(( "capacity: your OS is not supported yet." ));
return(0);
#endif
}
void
cdrom_interface::read_block(uint8* buf, int lba)
{
// Read a single block from the CD
off_t pos;
ssize_t n;
#ifdef WIN32
if(bUseASPI) {
ReadCDSector(hid, tid, lun, lba, buf, BX_CD_FRAMESIZE);
n = BX_CD_FRAMESIZE;
} else {
pos = SetFilePointer(hFile, lba*BX_CD_FRAMESIZE, NULL, SEEK_SET);
if (pos == 0xffffffff) {
BX_PANIC(("cdrom: read_block: lseek returned error."));
}
ReadFile(hFile, (void *) buf, BX_CD_FRAMESIZE, (unsigned long *) &n, NULL);
}
#else
pos = lseek(fd, lba*BX_CD_FRAMESIZE, SEEK_SET);
if (pos < 0) {
BX_PANIC(("cdrom: read_block: lseek returned error."));
}
n = read(fd, buf, BX_CD_FRAMESIZE);
#endif
if (n != BX_CD_FRAMESIZE) {
BX_PANIC(("cdrom: read_block: read returned %d",
(int) n));
}
}
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