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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/os2/os2_bios.c,v 3.10 2000/04/05 18:13:52 dawes Exp $ */
/*
* (c) Copyright 1994 by Holger Veit
* <Holger.Veit@gmd.de>
* Modified 1996 by Sebastien Marineau <marineau@genie.uottawa.ca>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* HOLGER VEIT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of Holger Veit shall not be
* used in advertising or otherwise to promote the sale, use or other dealings
* in this Software without prior written authorization from Holger Veit.
*
*/
/* $XConsortium: os2_bios.c /main/5 1996/10/27 11:48:45 kaleb $ */
#define I_NEED_OS2_H
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <X11/X.h>
#include "input.h"
#include "scrnintstr.h"
#define INCL_32
#define INCL_DOS
#define INCL_DOSFILEMGR
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
/*
* Read BIOS via xf86sup.SYS device driver
*/
static APIRET doioctl(HFILE fd,ULONG addr,ULONG len,unsigned char* dbuf)
{
UCHAR *dta;
ULONG plen,dlen;
APIRET rc;
struct {
ULONG command;
ULONG physaddr;
USHORT numbytes;
} par;
/* prepare parameter and data packets for ioctl */
par.command = 0;
par.physaddr = addr;
par.numbytes = dlen = len;
plen = sizeof(par);
/* issue call to get a readonly copy of BIOS ROM */
rc = DosDevIOCtl(fd, (ULONG)0x76, (ULONG)0x64,
(PVOID)&par, (ULONG)plen, (PULONG)&plen,
(PVOID)dbuf, (ULONG)dlen, (PULONG)&dlen);
return rc;
}
int xf86ReadBIOS(Base, Offset, Buf, Len)
unsigned long Base;
unsigned long Offset;
unsigned char *Buf;
int Len;
{
HFILE fd;
int i;
ULONG action;
APIRET rc;
ULONG Phys_address;
UCHAR* dta;
int off, chunksz,lensave;
/* allocate dta */
dta = (UCHAR*)xalloc(Len);
Phys_address=Base+Offset;
/* open the special device pmap$ (default with OS/2) */
if (DosOpen((PSZ)"PMAP$", (PHFILE)&fd, (PULONG)&action,
(ULONG)0, FILE_SYSTEM, FILE_OPEN,
OPEN_SHARE_DENYNONE|OPEN_FLAGS_NOINHERIT|OPEN_ACCESS_READONLY,
(ULONG)0) != 0) {
FatalError("xf86ReadBIOS: install DEVICE=path\\xf86sup.SYS!");
return -1;
}
/* copy 32K at a time */
off = 0;
lensave = Len;
while (Len > 0) {
chunksz = (Len > 32768) ? 32768 : Len;
Len -= chunksz;
rc = doioctl(fd,(ULONG)Phys_address,chunksz,dta+off);
if (rc != 0) {
FatalError("xf86ReadBIOS: BIOS map failed, addr=%lx, rc=%d\n",
Phys_address,rc);
xfree(dta);
DosClose(fd);
return -1;
}
off += chunksz;
}
/*
* Sanity check... No longer fatal, as some PS/1 and PS/2 fail here but still work.
* S. Marineau, 10/10/96
*/
#if 0
if ((Phys_address & 0x7fff) != 0 &&
(dta[0] != 0x55 || dta[1] != 0xaa)) {
FatalError("BIOS sanity check failed, addr=%x\nPlease report if you encounter problems\n",
Phys_address);
}
#endif
/* copy data to buffer */
memcpy(Buf, dta, lensave);
xfree(dta);
/* close device */
DosClose(fd);
return(lensave);
}
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