f19f7b8e53
FindPCIVideoInfo() function isn't need anymore.
xf86scanpci() is being called only once so we don't need permanent
(static) variables there.
restorePciState() is not used for now (until we find why multiple
cards aren't working).
278 lines
11 KiB
C
278 lines
11 KiB
C
/*
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* Pci.c - New server PCI access functions
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*
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* The XFree86 server PCI access functions have been reimplemented as a
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* framework that allows each supported platform/OS to have their own
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* platform/OS specific pci driver.
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*
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* All of the public PCI access functions exported to the other parts of
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* the server are declared in Pci.h and defined herein. These include:
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* pciInit() - Initialize PCI access functions
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* pciReadLong() - Read a 32 bit value from a device's cfg space
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* pciReadWord() - Read a 16 bit value from a device's cfg space
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* pciReadByte() - Read an 8 bit value from a device's cfg space
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* pciWriteLong() - Write a 32 bit value to a device's cfg space
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* pciWriteWord() - Write a 16 bit value to a device's cfg space
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* pciWriteByte() - Write an 8 bit value to a device's cfg space
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* pciSetBitsLong() - Write a 32 bit value against a mask
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* pciSetBitsByte() - Write an 8 bit value against a mask
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* pciTag() - Return tag for a given PCI bus, device, &
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* function
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* pciBusAddrToHostAddr() - Convert a PCI address to a host address
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* xf86scanpci() - Return info about all PCI devices
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* xf86MapDomainMemory() - Like xf86MapPciMem() but can handle
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* domain/host address translation
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* xf86MapLegacyIO() - Maps PCI I/O spaces
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*
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* The actual PCI backend driver is selected by the pciInit() function
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* (see below) using either compile time definitions, run-time checks,
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* or both.
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*
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* Certain generic functions are provided that make the implementation
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* of certain well behaved platforms (e.g. those supporting PCI config
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* mechanism 1 or some thing close to it) very easy.
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*
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* Less well behaved platforms/OS's can roll their own functions.
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*
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* To add support for another platform/OS, add a call to fooPciInit() within
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* pciInit() below under the correct compile time definition or run-time
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* conditional.
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*
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* The fooPciInit() procedure must do three things:
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* 1) Initialize the pciBusTable[] for all primary PCI buses including
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* the per domain PCI access functions (readLong, writeLong,
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* addrBusToHost, and addrHostToBus).
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*
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* 2) Add entries to pciBusTable[] for configured secondary buses. This
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* step may be skipped if a platform is using the generic findFirst/
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* findNext functions because these procedures will automatically
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* discover and add secondary buses dynamically.
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*
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* 3) Overide default settings for global PCI access functions if
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* required. These include pciFindFirstFP, pciFindNextFP,
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* Of course, if you choose not to use one of the generic
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* functions, you will need to provide a platform specifc replacement.
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*
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* Gary Barton
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* Concurrent Computer Corporation
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* garyb@gate.net
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*
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*/
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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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* This software is derived from the original XFree86 PCI code
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* which includes the following copyright notices as well:
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*
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* Copyright 1995 by Robin Cutshaw <robin@XFree86.Org>
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the names of the above listed copyright holder(s)
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* not be used in advertising or publicity pertaining to distribution of
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* the software without specific, written prior permission. The above listed
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* copyright holder(s) make(s) no representations about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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* implied warranty.
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*
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* THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM(S) 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 THE ABOVE LISTED COPYRIGHT HOLDER(S) 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, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* This code is also based heavily on the code in FreeBSD-current, which was
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* written by Wolfgang Stanglmeier, and contains the following copyright:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* Copyright (c) 1999-2003 by The XFree86 Project, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <errno.h>
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#include <signal.h>
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#include <X11/Xarch.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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#define XF86_OS_PRIVS
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#include "xf86_OSproc.h"
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#include "Pci.h"
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#include <pciaccess.h>
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#if 0
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#endif
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#define PCI_MFDEV_SUPPORT 1 /* Include PCI multifunction device support */
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#define PCI_BRIDGE_SUPPORT 1 /* Include support for PCI-to-PCI bridges */
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/*
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* Global data
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*/
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pciBusInfo_t *pciBusInfo[MAX_PCI_BUSES] = { NULL, };
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_X_EXPORT int pciNumBuses = 0; /* Actual number of PCI buses */
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int pciMaxBusNum = MAX_PCI_BUSES;
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/*
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* pciInit - choose correct platform/OS specific PCI init routine
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*/
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static void
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pciInit(void)
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{
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static int pciInitialized = 0;
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if (!pciInitialized) {
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pciInitialized = 1;
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/* XXX */
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#if defined(DEBUGPCI)
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if (DEBUGPCI >= xf86Verbose) {
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xf86Verbose = DEBUGPCI;
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}
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#endif
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ARCH_PCI_INIT();
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}
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}
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_X_EXPORT ADDRESS
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pciBusAddrToHostAddr(PCITAG tag, PciAddrType type, ADDRESS addr)
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{
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int bus = PCI_BUS_FROM_TAG(tag);
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pciInit();
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if ((bus >= 0) && (bus < pciNumBuses) && pciBusInfo[bus] &&
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pciBusInfo[bus]->funcs->pciAddrBusToHost)
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return (*pciBusInfo[bus]->funcs->pciAddrBusToHost)(tag, type, addr);
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else
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return(addr);
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}
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_X_EXPORT PCITAG
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pciTag(int busnum, int devnum, int funcnum)
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{
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return(PCI_MAKE_TAG(busnum,devnum,funcnum));
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}
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ADDRESS
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pciAddrNOOP(PCITAG tag, PciAddrType type, ADDRESS addr)
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{
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return(addr);
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}
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_X_EXPORT Bool
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xf86scanpci(void)
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{
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Bool success = FALSE;
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success = (pci_system_init() == 0);
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pciInit();
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return success;
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}
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