168 lines
5.2 KiB
C
168 lines
5.2 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bus/freebsdPci.c,v 1.6 2003/10/02 13:30:07 eich Exp $ */
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/*
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* Copyright 1998 by Concurrent Computer Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of Concurrent Computer
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* Corporation not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Concurrent Computer Corporation makes no representations
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* about the suitability of this software for any purpose. It is
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* provided "as is" without express or implied warranty.
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*
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* CONCURRENT COMPUTER CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD
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* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS, IN NO EVENT SHALL CONCURRENT COMPUTER CORPORATION BE
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* LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
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* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*
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* Copyright 1998 by Metro Link Incorporated
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of Metro Link
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* Incorporated not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Metro Link Incorporated makes no representations
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* about the suitability of this software for any purpose. It is
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* provided "as is" without express or implied warranty.
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*
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* METRO LINK INCORPORATED DISCLAIMS ALL WARRANTIES WITH REGARD
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* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS, IN NO EVENT SHALL METRO LINK INCORPORATED BE
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* LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
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* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#include <stdio.h>
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#include "compiler.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86_OSlib.h"
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#include "Pci.h"
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#include <sys/pciio.h>
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/*
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* freebsd platform specific PCI access functions -- using /dev/pci
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* needs kernel version 2.2.x
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*/
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static CARD32 freebsdPciCfgRead(PCITAG tag, int off);
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static void freebsdPciCfgWrite(PCITAG, int off, CARD32 val);
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static void freebsdPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits);
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static pciBusFuncs_t freebsdFuncs0 = {
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/* pciReadLong */ freebsdPciCfgRead,
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/* pciWriteLong */ freebsdPciCfgWrite,
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/* pciSetBitsLong */ freebsdPciCfgSetBits,
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/* pciAddrHostToBus */ pciAddrNOOP,
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/* pciAddrBusToHost */ pciAddrNOOP
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};
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static pciBusInfo_t freebsdPci0 = {
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/* configMech */ PCI_CFG_MECH_OTHER,
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/* numDevices */ 32,
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/* secondary */ FALSE,
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/* primary_bus */ 0,
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#ifdef PowerMAX_OS
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/* ppc_io_base */ 0,
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/* ppc_io_size */ 0,
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#endif
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/* funcs */ &freebsdFuncs0,
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/* pciBusPriv */ NULL,
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/* bridge */ NULL
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};
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#if !defined(__OpenBSD__) && !defined(__FreeBSD__)
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#if X_BYTE_ORDER == X_BIG_ENDIAN
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#ifdef __sparc__
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#ifndef ASI_PL
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#define ASI_PL 0x88
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#endif
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#define PCI_CPU(val) ({ \
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int __ret; \
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__asm__ __volatile__("lduwa [%1] %2, %0" : "=r" (__ret) : "r" (&val), "i" (ASI_PL)); \
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__ret; \
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})
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#else
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#define PCI_CPU(val) (((val >> 24) & 0x000000ff) | \
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((val >> 8) & 0x0000ff00) | \
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((val << 8) & 0x00ff0000) | \
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((val << 24) & 0xff000000))
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#endif
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#else
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#define PCI_CPU(val) (val)
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#endif
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#else /* ! OpenBSD */
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/* OpenBSD has already the bytes in the right order
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for all architectures */
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#define PCI_CPU(val) (val)
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#endif
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#define BUS(tag) (((tag)>>16)&0xff)
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#define DFN(tag) (((tag)>>8)&0xff)
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static int pciFd = -1;
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void
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freebsdPciInit()
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{
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pciFd = open("/dev/pci", O_RDWR);
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if (pciFd < 0)
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return;
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pciNumBuses = 1;
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pciBusInfo[0] = &freebsdPci0;
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pciFindFirstFP = pciGenFindFirst;
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pciFindNextFP = pciGenFindNext;
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}
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static CARD32
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freebsdPciCfgRead(PCITAG tag, int off)
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{
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struct pci_io io;
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int error;
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io.pi_sel.pc_bus = BUS(tag);
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io.pi_sel.pc_dev = DFN(tag) >> 3;
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io.pi_sel.pc_func = DFN(tag) & 7;
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io.pi_reg = off;
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io.pi_width = 4;
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error = ioctl(pciFd, PCIOCREAD, &io);
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if (error)
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return ~0;
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return PCI_CPU(io.pi_data);
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}
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static void
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freebsdPciCfgWrite(PCITAG tag, int off, CARD32 val)
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{
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struct pci_io io;
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io.pi_sel.pc_bus = BUS(tag);
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io.pi_sel.pc_dev = DFN(tag) >> 3;
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io.pi_sel.pc_func = DFN(tag) & 7;
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io.pi_reg = off;
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io.pi_width = 4;
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io.pi_data = PCI_CPU(val);
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ioctl(pciFd, PCIOCWRITE, &io);
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}
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static void
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freebsdPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits)
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{
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CARD32 val = freebsdPciCfgRead(tag, off);
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val = (val & ~mask) | (bits & mask);
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freebsdPciCfgWrite(tag, off, val);
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}
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