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