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/*
file: misc.c
*/
#include "mondello/compiler.h" /* outb(), outw(), outl(), inb(), inw(), inl() */
#include "mondello/misc.h"
/*
* PCI code gratuitously stolen from XF86's
* xc/programs/Xserver/hw/xf86/etc/scanpci.c.
* Original code written by Robin Cutshaw (robin@xfree86.org)
* Adapted (read: ripped) by Peter McDermott for Mesa's Mondello driver
* in Mesa 3.1.8.
*/
/*----------------------------------------------------------------------------
PCILock - locks the PCI bus from stray writes
-----------------------------------------------------------------------------*/
void PCILock()
{
outl(0xcf8,0x00000000);
}
#include <unistd.h>
/*----------------------------------------------------------------------------
PCIUnlock - unlocks the PCI bus to allow configuration info to be read
-----------------------------------------------------------------------------*/
void PCIUnlock()
{
long tmp1;
long tmp2;
/*
outb(0xcf8,0x00);
outb(0xcfa,0x00);
tmp1 = inb(0xcf8);
tmp2 = inb(0xcfa);
if ((tmp1==0x00) && (tmp2==0x00)) {
printf("PCI says configuration type 2\n");
}
*/
tmp1=inl(0xcf8);
outl(0xcf8,0x80000000);
tmp2=inl(0xcf8);
outl(0xcf8,tmp1);
if (tmp2!=0x80000000) {
printf("PCIUnlock: No PCI available!");
}
}
/*----------------------------------------------------------------------------
PCIOut - sends an int at an address to the PCI bus (device=card #)
-----------------------------------------------------------------------------*/
void PCIOut(int device, int address, int data)
{
int data_out;
data_out=0x80000000;
data_out|=device << 11;
data_out|=(address & 0x3f);
outl(0xcf8,data_out);
outl(0xcfc,data);
}
/*----------------------------------------------------------------------------
PCIIn - reads an int at an address from the PCI bus (device=card #)
-----------------------------------------------------------------------------*/
int PCIIn(int device, int address)
{
int data_out;
data_out=0x80000000;
data_out|=device << 11;
data_out|=(address & 0x3f);
outl(0xcf8,data_out);
return inl(0xcfc);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.