// Copyright (C) 2001 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 */ #ifdef __linux__ extern "C" { #include #include #include // I use the framesize in non OS specific code too #define BX_CD_FRAMESIZE CD_FRAMESIZE } #endif #ifdef __sun extern "C" { #include #include #include #include #define BX_CD_FRAMESIZE CDROM_BLK_2048 } #endif /* __sun */ #if (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 #include #include #include #include #include // XXX #define BX_CD_FRAMESIZE 2048 #define CD_FRAMESIZE 2048 #endif #ifdef WIN32 #include #include #define BX_CD_FRAMESIZE 2048 #define CD_FRAMESIZE 2048 HANDLE hFile = NULL; #endif cdrom_interface::cdrom_interface(char *dev) { setprefix("[CD ]"); settype(CDLOG); fd = -1; // File descriptor not yet allocated if ( dev == NULL ) path = NULL; else { path = strdup(dev); BX_INFO(("Init, file = '%s'",dev)); } } cdrom_interface::~cdrom_interface(void) { if (fd >= 0) close(fd); if (path) free(path); } bool cdrom_interface::insert_cdrom() { unsigned char buffer[BX_CD_FRAMESIZE]; ssize_t ret; // Load CD-ROM. Returns false if CD is not ready. #ifdef WIN32 char drive[256]; sprintf(drive, "\\\\.\\%s", path); hFile=CreateFile((char *)&drive, GENERIC_READ, 0 , NULL, OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, NULL); //printf("%s", path); //hFile=CreateFile(path, GENERIC_READ, 0 , NULL, OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, NULL); if (hFile !=(void *)0xFFFFFFFF) fd=1; #else fd = open(path, O_RDONLY); #endif if (fd < 0) { BX_INFO(( "::cdrom_interface: open failed on dev '%s'.", path)); return(false); } // I just see if I can read a sector to verify that a // CD is in the drive and readable. #ifdef WIN32 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 ret = read(fd, &buffer, BX_CD_FRAMESIZE); if (ret < 0) { close(fd); fd = -1; BX_DEBUG(( "insert_cdrom: read returns error." )); 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 DWORD lpBytesReturned; DeviceIoControl(hFile, IOCTL_STORAGE_EJECT_MEDIA, NULL, 0, NULL, 0, &lpBytesReturned, 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 { /* #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); */ 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) 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(__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) 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 bytes of capacity the actual media has. #ifdef __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 __linux__ { // I just looked through the Linux kernel source to see // what it does with the ATAPI capacity command, and reversed // that process here. uint32 nr_sects; if (fd < 0) { BX_PANIC(("cdrom: capacity: file not open.")); } if (ioctl(fd, BLKGETSIZE, &nr_sects) != 0) { BX_PANIC(("cdrom: ioctl(BLKGETSIZE) failed")); } nr_sects /= (CD_FRAMESIZE / 512); BX_DEBUG(( "capacity: %u", nr_sects)); return(nr_sects); } #elif 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(__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_ERROR(( "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 { unsigned long FileSize; return (GetFileSize(hFile, &FileSize) ); } #else BX_INFO(( "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 pos = SetFilePointer(hFile, lba*BX_CD_FRAMESIZE, NULL, SEEK_SET); if (pos == 0xffffffff) { BX_PANIC(("cdrom: read_block: lseek returned error.")); } #else pos = lseek(fd, lba*BX_CD_FRAMESIZE, SEEK_SET); if (pos < 0) { BX_PANIC(("cdrom: read_block: lseek returned error.")); } #endif #ifdef WIN32 ReadFile(hFile, (void *) buf, BX_CD_FRAMESIZE, (unsigned long *) &n, NULL); #else n = read(fd, buf, BX_CD_FRAMESIZE); #endif if (n != BX_CD_FRAMESIZE) { BX_PANIC(("cdrom: read_block: read returned %d", (int) n)); } }