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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bus/ppcPci.c,v 1.8 2002/07/24 19:06:52 tsi Exp $ */
/*
* ppcPci.c - PowerPC PCI access functions
*
* PCI driver functions supporting Motorola PowerPC platforms
* including Powerstack(RiscPC/RiscPC+), PowerStackII, MTX, and
* MVME 160x/260x/360x/460x VME boards
*
* Gary Barton
* Concurrent Computer Corporation
* garyb@gate.net
*
*/
/*
* 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"
#ifndef MAP_FAILED
#define MAP_FAILED (pointer)(-1)
#endif
void
ppcPciInit()
{
#if defined(PowerMAX_OS)
extern void pmaxPciInit(void);
pmaxPciInit();
#else
extern void motoppcPciInit(void);
motoppcPciInit();
#endif
}
/*
* Motorola PowerPC platform support
*
* The following code should support the MVME 1600 & 2600 VME boards
* as well as the various PowerStack and RiscPC models. All of these
* machines support PCI config mechanism #1 and use the std config
* address and data regs locations:
* cfg address reg = 0xcf8 (PCI I/O)
* cfg data reg = 0xcfc (PCI I/O)
*
* The moto machines do have different address maps on either side
* of the PCI-host bridge though.
*/
static ADDRESS motoppcBusAddrToHostAddr(PCITAG, PciAddrType, ADDRESS);
static ADDRESS motoppcHostAddrToBusAddr(PCITAG, PciAddrType, ADDRESS);
static pciBusFuncs_t motoppcFuncs0 = {
/* pciReadLong */ pciCfgMech1Read,
/* pciWriteLong */ pciCfgMech1Write,
/* pciSetBitsLong */ pciCfgMech1SetBits,
/* pciAddrHostToBus */ motoppcHostAddrToBusAddr,
/* pciAddrBusToHost */ motoppcBusAddrToHostAddr
};
static pciBusInfo_t motoppcPci0 = {
/* configMech */ PCI_CFG_MECH_1,
/* numDevices */ 32,
/* secondary */ FALSE,
/* primary_bus */ 0,
#ifdef PowerMAX_OS
/* ppc_io_base */ 0x80000000,
/* ppc_io_size */ 64 * 1024,
#endif
/* funcs */ &motoppcFuncs0,
/* pciBusPriv */ NULL,
/* bridge */ NULL
};
extern volatile unsigned char *ioBase;
void
motoppcPciInit()
{
pciNumBuses = 1;
pciBusInfo[0] = &motoppcPci0;
pciFindFirstFP = pciGenFindFirst;
pciFindNextFP = pciGenFindNext;
if (ioBase == MAP_FAILED) {
ppcPciIoMap(0); /* Make inb/outb et al work for pci0 and its secondaries */
if (ioBase == MAP_FAILED) {
FatalError("motoppcPciInit: Cannot map pci0 I/O segment!!!\n");
/*NOTREACHED*/
}
}
}
extern unsigned long motoPciMemBase = 0;
#if defined(Lynx) && defined(__powerpc__)
extern unsigned long motoPciMemLen = 0x40000000;
#else
extern unsigned long motoPciMemLen = 0x3f000000;
#endif
extern unsigned long motoPciMemBaseCPU = 0xc0000000;
static ADDRESS
motoppcBusAddrToHostAddr(PCITAG tag, PciAddrType type, ADDRESS addr)
{
unsigned long addr_l = (unsigned long)addr;
if (type == PCI_MEM) {
if (addr_l >= motoPciMemBase && addr_l < motoPciMemLen)
/*
* PCI memory space addresses [0-0x3effffff] are
* are seen at [0xc0000000,0xfeffffff] on moto host
*/
return((ADDRESS)((motoPciMemBaseCPU - motoPciMemBase) + addr_l));
else if (addr_l >= 0x80000000)
/*
* Moto host memory [0,0x7fffffff] is seen at
* [0x80000000,0xffffffff] on PCI bus
*/
return((ADDRESS)(addr_l & 0x7fffffff));
else
FatalError("motoppcBusAddrToHostAddr: PCI addr 0x%x is not accessible to host!!!\n",
addr_l);
} else
return addr;
/*NOTREACHED*/
}
static ADDRESS
motoppcHostAddrToBusAddr(PCITAG tag, PciAddrType type, ADDRESS addr)
{
unsigned long addr_l = (unsigned long)addr;
if (type == PCI_MEM) {
if (addr_l < 0x80000000)
/*
* Moto host memory [0,0x7fffffff] is seen at
* [0x80000000,0xffffffff] on PCI bus
*/
return((ADDRESS)(0x80000000 | addr_l));
else if (addr_l >= motoPciMemBaseCPU && addr_l < motoPciMemBaseCPU + motoPciMemLen)
/*
* PCI memory space addresses [0-0x3effffff] are
* are seen at [0xc0000000,0xfeffffff] on moto host
*/
return((ADDRESS)(addr_l - (motoPciMemBaseCPU - motoPciMemBase)));
else
FatalError("motoppcHostAddrToBusAddr: Host addr 0x%x is not accessible to PCI!!!\n",
addr_l);
} else
return addr;
/*NOTREACHED*/
}
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