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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bus/axpPci.c,v 1.8 2000/08/04 16:13:40 eich Exp $ */
/*
* Copyright 1998 by Concurrent Computer Corporation
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of Concurrent Computer
* Corporation not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Concurrent Computer Corporation makes no representations
* about the suitability of this software for any purpose. It is
* provided "as is" without express or implied warranty.
*
* CONCURRENT COMPUTER CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CONCURRENT COMPUTER CORPORATION BE
* LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*
* Copyright 1998 by Metro Link Incorporated
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of Metro Link
* Incorporated not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Metro Link Incorporated makes no representations
* about the suitability of this software for any purpose. It is
* provided "as is" without express or implied warranty.
*
* METRO LINK INCORPORATED DISCLAIMS ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL METRO LINK INCORPORATED BE
* LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#include <stdio.h>
#include "compiler.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#include "Pci.h"
#include <asm/unistd.h>
/*
* Alpha platform specific PCI access functions
*/
CARD32 axpPciCfgRead(PCITAG tag, int off);
void axpPciCfgWrite(PCITAG, int off, CARD32 val);
void axpPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits);
pciBusInfo_t axpPci0 = {
/* configMech */ PCI_CFG_MECH_OTHER,
/* numDevices */ 32,
/* secondary */ FALSE,
/* primary_bus */ 0,
/* ppc_io_base */ 0,
/* ppc_io_size */ 0,
/* funcs */ {
axpPciCfgRead,
axpPciCfgWrite,
axpPciCfgSetBits,
pciAddrNOOP,
pciAddrNOOP
},
/* pciBusPriv */ NULL
};
void
axpPciInit()
{
pciNumBuses = 1;
pciBusInfo[0] = &axpPci0;
pciFindFirstFP = pciGenFindFirst;
pciFindNextFP = pciGenFindNext;
}
#if defined(linux)
/*
* These funtions will work for Linux, but other OS's
* are likely have a different mechanism for getting at
* PCI configuration space
*/
CARD32
axpPciCfgRead(PCITAG tag, int off)
{
int bus, dfn;
CARD32 val = 0xffffffff;
bus = PCI_BUS_FROM_TAG(tag);
/*
* Workaround for kernel bug
* triggered when probing for PCI devices
*/
if (bus >= pciNumBuses)
return (val);
dfn = PCI_DFN_FROM_TAG(tag);
syscall(__NR_pciconfig_read, bus, dfn, off, 4, &val);
return(val);
}
void
axpPciCfgWrite(PCITAG tag, int off, CARD32 val)
{
int bus, dfn;
bus = PCI_BUS_FROM_TAG(tag);
dfn = PCI_DFN_FROM_TAG(tag);
syscall(__NR_pciconfig_write, bus, dfn, off, 4, &val);
}
void
axpPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits)
{
int bus, dfn;
CARD32 val = 0xffffffff;
bus = PCI_BUS_FROM_TAG(tag);
dfn = PCI_DFN_FROM_TAG(tag);
syscall(__NR_pciconfig_read, bus, dfn, off, 4, &val);
val = (val & ~mask) | (bits & mask);
syscall(__NR_pciconfig_write, bus, dfn, off, 4, &val);
}
#endif /* Linux */
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