57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/int10/pci.c,v 1.11 2001/10/01 13:44:13 eich Exp $ */
|
|
|
|
/*
|
|
* XFree86 int10 module
|
|
* execute BIOS int 10h calls in x86 real mode environment
|
|
* Copyright 1999 Egbert Eich
|
|
*/
|
|
#ifdef HAVE_XORG_CONFIG_H
|
|
#include <xorg-config.h>
|
|
#endif
|
|
|
|
#include <string.h>
|
|
|
|
#include "xf86Pci.h"
|
|
#include "xf86.h"
|
|
#define _INT10_PRIVATE
|
|
#include "xf86int10.h"
|
|
|
|
int
|
|
mapPciRom(int pciEntity, unsigned char * address)
|
|
{
|
|
PCITAG tag;
|
|
unsigned char *mem, *ptr;
|
|
int length;
|
|
|
|
pciVideoPtr pvp = xf86GetPciInfoForEntity(pciEntity);
|
|
|
|
if (pvp == NULL) {
|
|
#ifdef DEBUG
|
|
ErrorF("mapPciRom: no PCI info\n");
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
tag = pciTag(pvp->bus,pvp->device,pvp->func);
|
|
length = 1 << pvp->biosSize;
|
|
|
|
/* Read in entire PCI ROM */
|
|
mem = ptr = xnfcalloc(length, 1);
|
|
length = xf86ReadPciBIOS(0, tag, -1, ptr, length);
|
|
if (length > 0)
|
|
memcpy(address, ptr, length);
|
|
/* unmap/close/disable PCI bios mem */
|
|
xfree(mem);
|
|
|
|
#ifdef DEBUG
|
|
if (!length)
|
|
ErrorF("mapPciRom: no BIOS found\n");
|
|
#ifdef PRINT_PCI
|
|
else
|
|
dprint(address,0x20);
|
|
#endif
|
|
#endif
|
|
|
|
return length;
|
|
}
|