/* * BIOS interrupt 13h handler * * Copyright 1997 Andreas Mohr * * 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include <stdlib.h> #include <sys/types.h> #ifdef HAVE_UNISTD_H # include <unistd.h> #endif #ifdef HAVE_SYS_IOCTL_H # include <sys/ioctl.h> #endif #include <fcntl.h> #ifdef linux #ifdef HAVE_LINUX_COMPILER_H #include <linux/compiler.h> #endif # include <linux/fd.h> #endif #include "dosexe.h" #include "wine/server.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(int); /* * Status of last int13 operation. */ static BYTE INT13_last_status; /********************************************************************** * INT13_SetStatus * * Write status to AH register and set carry flag on error (AH != 0). * * Despite what Ralf Brown says, at least functions 0x06 and 0x07 * seem to set carry, too. */ static void INT13_SetStatus( CONTEXT *context, BYTE status ) { INT13_last_status = status; SET_AH( context, status ); if (status) SET_CFLAG( context ); else RESET_CFLAG( context ); } /********************************************************************** * INT13_ReadFloppyParams * * Read floppy disk parameters. */ static void INT13_ReadFloppyParams( CONTEXT *context ) { #ifdef linux static const BYTE floppy_params[2][13] = { { 0xaf, 0x02, 0x25, 0x02, 0x12, 0x1b, 0xff, 0x6c, 0xf6, 0x0f, 0x08 }, { 0xaf, 0x02, 0x25, 0x02, 0x12, 0x1b, 0xff, 0x6c, 0xf6, 0x0f, 0x08 } }; static const DWORD drive_type_info[7]={ 0x0000, /* none */ 0x2709, /* 360 K */ 0x4f0f, /* 1.2 M */ 0x4f09, /* 720 K */ 0x4f12, /* 1.44 M */ 0x4f24, /* 2.88 M */ 0x4f24 /* 2.88 M */ }; unsigned int i; unsigned int nr_of_drives = 0; BYTE drive_nr = DL_reg( context ); int floppy_fd; int r; struct floppy_drive_params floppy_parm; WCHAR root[] = {'A',':','\\',0}, drive_root[] = {'\\','\\','.','\\','A',':',0}; HANDLE h; TRACE("in [ EDX=%08x ]\n", context->Edx ); SET_AL( context, 0 ); SET_BX( context, 0 ); SET_CX( context, 0 ); SET_DH( context, 0 ); for (i = 0; i < MAX_DOS_DRIVES; i++, root[0]++) if (GetDriveTypeW(root) == DRIVE_REMOVABLE) nr_of_drives++; SET_DL( context, nr_of_drives ); if (drive_nr > 1) { /* invalid drive ? */ INT13_SetStatus( context, 0x07 ); /* drive parameter activity failed */ return; } drive_root[4] = 'A' + drive_nr; h = CreateFileW(drive_root, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); if (h == INVALID_HANDLE_VALUE || wine_server_handle_to_fd(h, FILE_READ_DATA, &floppy_fd, NULL)) { WARN("Can't determine floppy geometry !\n"); INT13_SetStatus( context, 0x07 ); /* drive parameter activity failed */ return; } r = ioctl(floppy_fd, FDGETDRVPRM, &floppy_parm); wine_server_release_fd( h, floppy_fd ); CloseHandle(h); if(r<0) { INT13_SetStatus( context, 0x07 ); /* drive parameter activity failed */ return; } SET_BL( context, floppy_parm.cmos ); /* * CH = low eight bits of max cyl * CL = max sec nr (bits 5-0), * hi two bits of max cyl (bits 7-6) * DH = max head nr */ if(BL_reg( context ) && BL_reg( context ) < 7) { SET_DH( context, 0x01 ); SET_CX( context, drive_type_info[BL_reg( context )] ); } context->Edi = (DWORD)floppy_params[drive_nr]; if(!context->Edi) { ERR("Get floppy params failed for drive %d\n", drive_nr); INT13_SetStatus( context, 0x07 ); /* drive parameter activity failed */ return; } TRACE("out [ EAX=%08x EBX=%08x ECX=%08x EDX=%08x EDI=%08x ]\n", context->Eax, context->Ebx, context->Ecx, context->Edx, context->Edi); INT13_SetStatus( context, 0x00 ); /* success */ /* FIXME: Word exits quietly if we return with no error. Why? */ FIXME("Returned ERROR!\n"); SET_CFLAG( context ); #else INT13_SetStatus( context, 0x01 ); /* invalid function */ #endif } /********************************************************************** * DOSVM_Int13Handler * * Handler for int 13h (disk I/O). */ void WINAPI DOSVM_Int13Handler( CONTEXT *context ) { TRACE( "AH=%02x\n", AH_reg( context ) ); switch( AH_reg( context ) ) { case 0x00: /* RESET DISK SYSTEM */ INT13_SetStatus( context, 0x00 ); /* success */ break; case 0x01: /* STATUS OF DISK SYSTEM */ INT13_SetStatus( context, INT13_last_status ); break; case 0x02: /* READ SECTORS INTO MEMORY */ SET_AL( context, 0 ); /* number of sectors transferred */ INT13_SetStatus( context, 0x00 ); /* success */ break; case 0x03: /* WRITE SECTORS FROM MEMORY */ SET_AL( context, 0 ); /* number of sectors transferred */ INT13_SetStatus( context, 0x00 ); /* success */ break; case 0x04: /* VERIFY DISK SECTOR(S) */ SET_AL( context, 0 ); /* number of sectors verified */ INT13_SetStatus( context, 0x00 ); /* success */ break; case 0x05: /* FORMAT TRACK */ case 0x06: /* FORMAT TRACK AND SET BAD SECTOR FLAGS */ case 0x07: /* FORMAT DRIVE STARTING AT GIVEN TRACK */ INT13_SetStatus( context, 0x0c ); /* unsupported track or invalid media */ break; case 0x08: /* GET DRIVE PARAMETERS */ if (DL_reg( context ) & 0x80) { /* hard disk ? */ INT13_SetStatus( context, 0x07 ); /* drive parameter activity failed */ } else { /* floppy disk */ INT13_ReadFloppyParams( context ); } break; case 0x09: /* INITIALIZE CONTROLLER WITH DRIVE PARAMETERS */ case 0x0a: /* FIXED DISK - READ LONG */ case 0x0b: /* FIXED DISK - WRITE LONG */ case 0x0c: /* SEEK TO CYLINDER */ case 0x0d: /* ALTERNATE RESET HARD DISK */ INT13_SetStatus( context, 0x00 ); /* success */ break; case 0x0e: /* READ SECTOR BUFFER */ case 0x0f: /* WRITE SECTOR BUFFER */ INT13_SetStatus( context, 0x01 ); /* invalid function */ break; case 0x10: /* CHECK IF DRIVE READY */ case 0x11: /* RECALIBRATE DRIVE */ INT13_SetStatus( context, 0x00 ); /* success */ break; case 0x12: /* CONTROLLER RAM DIAGNOSTIC */ case 0x13: /* DRIVE DIAGNOSTIC */ INT13_SetStatus( context, 0x01 ); /* invalid function */ break; case 0x14: /* CONTROLLER INTERNAL DIAGNOSTIC */ INT13_SetStatus( context, 0x00 ); /* success */ break; case 0x15: /* GET DISK TYPE */ if (DL_reg( context ) & 0x80) { /* hard disk ? */ INT13_SetStatus( context, 0x00 ); /* success */ /* type is fixed disk, overwrites status */ SET_AH( context, 0x03 ); } else { /* floppy disk */ INT13_SetStatus( context, 0x00 ); /* success */ /* type is floppy with change detection, overwrites status */ SET_AH( context, 0x02 ); } break; case 0x16: /* FLOPPY - CHANGE OF DISK STATUS */ INT13_SetStatus( context, 0x00 ); /* success */ break; case 0x17: /* SET DISK TYPE FOR FORMAT */ if (DL_reg( context ) < 4) INT13_SetStatus( context, 0x00 ); /* successful completion */ else INT13_SetStatus( context, 0x01 ); /* error */ break; case 0x18: /* SET MEDIA TYPE FOR FORMAT */ if (DL_reg( context ) < 4) INT13_SetStatus( context, 0x00 ); /* success */ else INT13_SetStatus( context, 0x01 ); /* error */ break; case 0x19: /* FIXED DISK - PARK HEADS */ INT13_SetStatus( context, 0x00 ); /* success */ break; default: INT_BARF( context, 0x13 ); INT13_SetStatus( context, 0x01 ); /* invalid function */ } }