68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
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/*
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* Copyright (c) 1994 Charles Hannum. All rights reserved.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles Hannum.
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* 4. 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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* $Id: pci_machdep.h,v 1.1 1994/08/09 00:47:52 mycroft Exp $
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*/
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/*
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* Machine-specific definitions for PCI autoconfiguration.
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*
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* See the comments in pci_machdep.c for more explanation.
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*/
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/* Need this for struct intrhand. */
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#include <i386/isa/isavar.h>
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/*
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* Configuration tag; created from a {bus,device,function} triplet by
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* pci_make_tag(), and passed to pci_conf_read() and pci_conf_write().
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* We could instead always pass the {bus,device,function} triplet to
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* the read and write routines, but this would cause extra overhead.
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*
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* Machines other than PCs are likely to use the equivalent of mode 1
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* tags always. Mode 2 is historical and deprecated by the Revision
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* 2.0 specification.
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*/
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typedef union {
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u_long mode1;
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struct {
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u_short port;
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u_char enable;
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u_char forward;
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} mode2;
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} pcitag_t;
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/*
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* Type of a value read from or written to a configuration register.
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* Always 32 bits.
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*/
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typedef u_int32_t pcireg_t;
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extern int pci_mode;
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extern int pci_mode_detect __P((void));
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