444 lines
12 KiB
C++
444 lines
12 KiB
C++
// Copyright (C) 2001 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// These are the low-level CDROM functions which are called
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// from 'harddrv.cc'. They effect the OS specific functionality
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// needed by the CDROM emulation in 'harddrv.cc'. Mostly, just
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// ioctl() calls and such. Should be fairly easy to add support
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// for your OS if it is not supported yet.
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#include "bochs.h"
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#ifdef __linux__
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extern "C" {
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#include <sys/ioctl.h>
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#include <linux/fs.h>
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#include <linux/cdrom.h>
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// I use the framesize in non OS specific code too
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#define BX_CD_FRAMESIZE CD_FRAMESIZE
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}
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#endif
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#ifdef __sun
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extern "C" {
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/cdio.h>
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#define BX_CD_FRAMESIZE CDROM_BLK_2048
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}
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#endif /* __sun */
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#ifdef __OpenBSD__
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// OpenBSD pre version 2.7 may require extern "C" { } structure around
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// all the includes, because the i386 sys/disklabel.h contains code which
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// c++ considers invalid.
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/file.h>
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#include <sys/cdio.h>
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#include <sys/ioctl.h>
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#include <sys/disklabel.h>
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// XXX
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#define BX_CD_FRAMESIZE 2048
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#define CD_FRAMESIZE 2048
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#endif
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#ifdef WIN32
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#include <windows.h>
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#include <winioctl.h>
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#define BX_CD_FRAMESIZE 2048
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#define CD_FRAMESIZE 2048
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HANDLE hFile = NULL;
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#endif
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cdrom_interface::cdrom_interface(char *dev)
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{
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fd = -1; // File descriptor not yet allocated
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if ( dev == NULL )
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path = NULL;
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else
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path = strdup(dev);
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}
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cdrom_interface::~cdrom_interface(void)
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{
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if (fd >= 0)
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close(fd);
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if (path)
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free(path);
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}
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bool
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cdrom_interface::insert_cdrom()
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{
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unsigned char buffer[BX_CD_FRAMESIZE];
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ssize_t ret;
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// Load CD-ROM. Returns false if CD is not ready.
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#ifdef WIN32
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char drive[256];
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sprintf(drive, "\\\\.\\%s", path);
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hFile=CreateFile((char *)&drive, GENERIC_READ, 0 , NULL, OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, NULL);
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//printf("%s", path);
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//hFile=CreateFile(path, GENERIC_READ, 0 , NULL, OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, NULL);
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if (hFile !=(void *)0xFFFFFFFF)
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fd=1;
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#else
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fd = open(path, O_RDONLY);
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#endif
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if (fd < 0) {
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fprintf(stderr, "#::cdrom_interface: open failed on dev '%s'.\n", path);
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return(false);
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}
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// I just see if I can read a sector to verify that a
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// CD is in the drive and readable.
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#ifdef WIN32
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ReadFile(hFile, (void *) buffer, BX_CD_FRAMESIZE, (unsigned long *) &ret, NULL);
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if (ret < 0) {
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CloseHandle(hFile);
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fd = -1;
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fprintf(stderr, "#insert_cdrom: read returns error.\n");
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return(false);
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}
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#else
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ret = read(fd, &buffer, BX_CD_FRAMESIZE);
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if (ret < 0) {
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close(fd);
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fd = -1;
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fprintf(stderr, "#insert_cdrom: read returns error.\n");
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return(false);
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}
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#endif
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return(true);
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}
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void
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cdrom_interface::eject_cdrom()
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{
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// Logically eject the CD. I suppose we could stick in
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// some ioctl() calls to really eject the CD as well.
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if (fd >= 0) {
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#ifdef __OpenBSD__
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(void) ioctl (fd, CDIOCALLOW);
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if (ioctl (fd, CDIOCEJECT) < 0)
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fprintf(stderr, "#eject_cdrom: eject returns error.\n");
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#endif
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#ifdef WIN32
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DWORD lpBytesReturned;
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DeviceIoControl(hFile, IOCTL_STORAGE_EJECT_MEDIA, NULL, 0, NULL, 0, &lpBytesReturned, NULL);
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#endif
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close(fd);
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fd = -1;
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}
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}
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bool
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cdrom_interface::read_toc(uint8* buf, int* length, bool msf, int start_track)
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{
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// Read CD TOC. Returns false if start track is out of bounds.
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if (fd < 0) {
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bx_panic("cdrom: read_toc: file not open.\n");
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}
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#ifdef WIN32
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{
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/* #define IOCTL_CDROM_BASE FILE_DEVICE_CD_ROM
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#define IOCTL_CDROM_READ_TOC CTL_CODE(IOCTL_CDROM_BASE, 0x0000, METHOD_BUFFERED, FILE_READ_ACCESS)
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unsigned long iBytesReturned;
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DeviceIoControl(hFile, IOCTL_CDROM_READ_TOC, NULL, 0, NULL, 0, &iBytesReturned, NULL); */
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return true;
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}
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#elif __linux__ || defined(__sun)
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{
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struct cdrom_tochdr tochdr;
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if (ioctl(fd, CDROMREADTOCHDR, &tochdr))
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bx_panic("cdrom: read_toc: READTOCHDR failed.\n");
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if (start_track > tochdr.cdth_trk1)
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return false;
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buf[2] = tochdr.cdth_trk0;
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buf[3] = tochdr.cdth_trk1;
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if (start_track < tochdr.cdth_trk0)
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start_track = tochdr.cdth_trk0;
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int len = 4;
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for (int i = start_track; i <= tochdr.cdth_trk1; i++) {
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struct cdrom_tocentry tocentry;
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tocentry.cdte_format = (msf) ? CDROM_MSF : CDROM_LBA;
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tocentry.cdte_track = i;
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if (ioctl(fd, CDROMREADTOCENTRY, &tocentry))
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bx_panic("cdrom: read_toc: READTOCENTRY failed.\n");
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buf[len++] = 0; // Reserved
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buf[len++] = (tocentry.cdte_adr << 4) | tocentry.cdte_ctrl ; // ADR, control
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buf[len++] = i; // Track number
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buf[len++] = 0; // Reserved
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// Start address
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if (msf) {
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buf[len++] = 0; // reserved
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buf[len++] = tocentry.cdte_addr.msf.minute;
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buf[len++] = tocentry.cdte_addr.msf.second;
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buf[len++] = tocentry.cdte_addr.msf.frame;
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} else {
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buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 24) & 0xff;
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buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 16) & 0xff;
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buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 8) & 0xff;
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buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 0) & 0xff;
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}
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}
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// Lead out track
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struct cdrom_tocentry tocentry;
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tocentry.cdte_format = (msf) ? CDROM_MSF : CDROM_LBA;
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#ifdef CDROM_LEADOUT
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tocentry.cdte_track = CDROM_LEADOUT;
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#else
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tocentry.cdte_track = 0xaa;
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#endif
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if (ioctl(fd, CDROMREADTOCENTRY, &tocentry))
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bx_panic("cdrom: read_toc: READTOCENTRY lead-out failed.\n");
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buf[len++] = 0; // Reserved
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buf[len++] = (tocentry.cdte_adr << 4) | tocentry.cdte_ctrl ; // ADR, control
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buf[len++] = 0xaa; // Track number
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buf[len++] = 0; // Reserved
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// Start address
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if (msf) {
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buf[len++] = 0; // reserved
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buf[len++] = tocentry.cdte_addr.msf.minute;
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buf[len++] = tocentry.cdte_addr.msf.second;
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buf[len++] = tocentry.cdte_addr.msf.frame;
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} else {
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buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 24) & 0xff;
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buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 16) & 0xff;
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buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 8) & 0xff;
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buf[len++] = (((unsigned)tocentry.cdte_addr.lba) >> 0) & 0xff;
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}
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buf[0] = ((len-2) >> 8) & 0xff;
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buf[1] = (len-2) & 0xff;
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*length = len;
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return true;
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}
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#elif defined(__OpenBSD__)
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{
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struct ioc_toc_header h;
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struct ioc_read_toc_entry t;
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if (ioctl (fd, CDIOREADTOCHEADER, &h) < 0)
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bx_panic("cdrom: read_toc: READTOCHDR failed.\n");
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if (start_track > h.ending_track)
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return false;
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buf[2] = h.starting_track;
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buf[3] = h.ending_track;
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if (start_track < h.starting_track)
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start_track = h.starting_track;
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int len = 4;
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for (int i = start_track; i <= h.ending_track; i++) {
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struct cd_toc_entry tocentry;
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t.address_format = (msf) ? CD_MSF_FORMAT : CD_LBA_FORMAT;
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t.starting_track = i;
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t.data_len = sizeof(tocentry);
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t.data = &tocentry;
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if (ioctl (fd, CDIOREADTOCENTRYS, &tocentry) < 0)
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bx_panic("cdrom: read_toc: READTOCENTRY failed.\n");
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buf[len++] = 0; // Reserved
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buf[len++] = (tocentry.addr_type << 4) | tocentry.control ; // ADR, control
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buf[len++] = i; // Track number
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buf[len++] = 0; // Reserved
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// Start address
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if (msf) {
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buf[len++] = 0; // reserved
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buf[len++] = tocentry.addr.msf.minute;
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buf[len++] = tocentry.addr.msf.second;
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buf[len++] = tocentry.addr.msf.frame;
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} else {
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buf[len++] = (((unsigned)tocentry.addr.lba) >> 24) & 0xff;
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buf[len++] = (((unsigned)tocentry.addr.lba) >> 16) & 0xff;
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buf[len++] = (((unsigned)tocentry.addr.lba) >> 8) & 0xff;
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buf[len++] = (((unsigned)tocentry.addr.lba) >> 0) & 0xff;
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}
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}
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// Lead out track
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struct cd_toc_entry tocentry;
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t.address_format = (msf) ? CD_MSF_FORMAT : CD_LBA_FORMAT;
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t.starting_track = 0xaa;
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t.data_len = sizeof(tocentry);
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t.data = &tocentry;
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if (ioctl (fd, CDIOREADTOCENTRYS, &tocentry) < 0)
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bx_panic("cdrom: read_toc: READTOCENTRY lead-out failed.\n");
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buf[len++] = 0; // Reserved
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buf[len++] = (tocentry.addr_type << 4) | tocentry.control ; // ADR, control
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buf[len++] = 0xaa; // Track number
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buf[len++] = 0; // Reserved
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// Start address
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if (msf) {
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buf[len++] = 0; // reserved
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buf[len++] = tocentry.addr.msf.minute;
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buf[len++] = tocentry.addr.msf.second;
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buf[len++] = tocentry.addr.msf.frame;
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} else {
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buf[len++] = (((unsigned)tocentry.addr.lba) >> 24) & 0xff;
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buf[len++] = (((unsigned)tocentry.addr.lba) >> 16) & 0xff;
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buf[len++] = (((unsigned)tocentry.addr.lba) >> 8) & 0xff;
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buf[len++] = (((unsigned)tocentry.addr.lba) >> 0) & 0xff;
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}
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buf[0] = ((len-2) >> 8) & 0xff;
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buf[1] = (len-2) & 0xff;
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*length = len;
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return true;
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}
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#else
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fprintf(stderr, "#cdrom: read_toc: your OS is not supported yet.\n");
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return(false); // OS not supported yet, return false always.
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#endif
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}
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uint32
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cdrom_interface::capacity()
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{
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// Return CD-ROM capacity. I believe you want to return
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// the number of bytes of capacity the actual media has.
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#ifdef __sun
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{
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struct stat buf = {0};
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if (fd < 0) {
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bx_panic("cdrom: capacity: file not open.\n");
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}
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if( fstat(fd, &buf) != 0 )
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bx_panic("cdrom: capacity: stat() failed.\n");
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return(buf.st_size);
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}
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#elif __linux__
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{
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// I just looked through the Linux kernel source to see
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// what it does with the ATAPI capacity command, and reversed
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// that process here.
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uint32 nr_sects;
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if (fd < 0) {
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bx_panic("cdrom: capacity: file not open.\n");
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}
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if (ioctl(fd, BLKGETSIZE, &nr_sects) != 0) {
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bx_panic("cdrom: ioctl(BLKGETSIZE) failed\n");
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}
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nr_sects /= (CD_FRAMESIZE / 512);
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fprintf(stderr, "#cdrom: capacity: %u\n", nr_sects);
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return(nr_sects);
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}
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#elif defined(__OpenBSD__)
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{
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// We just read the disklabel, imagine that...
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struct disklabel lp;
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if (fd < 0)
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bx_panic("cdrom: capacity: file not open.\n");
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if (ioctl(fd, DIOCGDINFO, &lp) < 0)
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bx_panic("cdrom: ioctl(DIOCGDINFO) failed\n");
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fprintf(stderr, "#cdrom: capacity: %u\n", lp.d_secperunit);
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return(lp.d_secperunit);
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}
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#elif defined WIN32
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{
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unsigned long FileSize;
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return (GetFileSize(hFile, &FileSize)
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);
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}
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#else
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fprintf(stderr, "#cdrom: capacity: your OS is not supported yet.\n");
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return(0);
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#endif
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}
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void
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cdrom_interface::read_block(uint8* buf, int lba)
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{
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// Read a single block from the CD
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off_t pos;
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ssize_t n;
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#ifdef WIN32
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pos = SetFilePointer(hFile, lba*BX_CD_FRAMESIZE, NULL, SEEK_SET);
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if (pos == 0xffffffff) {
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bx_panic("cdrom: read_block: lseek returned error.\n");
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}
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#else
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pos = lseek(fd, lba*BX_CD_FRAMESIZE, SEEK_SET);
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if (pos < 0) {
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bx_panic("cdrom: read_block: lseek returned error.\n");
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}
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#endif
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#ifdef WIN32
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ReadFile(hFile, (void *) buf, BX_CD_FRAMESIZE, (unsigned long *) &n, NULL);
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#else
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n = read(fd, buf, BX_CD_FRAMESIZE);
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#endif
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if (n != BX_CD_FRAMESIZE) {
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bx_panic("cdrom: read_block: read returned %d\n",
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(int) n);
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}
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}
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