NetBSD/sys/arch/i386/pci/pci_machdep.h

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/* $NetBSD: pci_machdep.h,v 1.3 1995/04/17 12:08:00 cgd Exp $ */
1994-10-27 07:14:23 +03:00
1994-08-09 04:47:46 +04:00
/*
* Copyright (c) 1994 Charles Hannum. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Machine-specific definitions for PCI autoconfiguration.
*
* See the comments in pci_machdep.c for more explanation.
*/
/*
* Configuration tag; created from a {bus,device,function} triplet by
* pci_make_tag(), and passed to pci_conf_read() and pci_conf_write().
* We could instead always pass the {bus,device,function} triplet to
* the read and write routines, but this would cause extra overhead.
*
* Machines other than PCs are likely to use the equivalent of mode 1
* tags always. Mode 2 is historical and deprecated by the Revision
* 2.0 specification.
*/
typedef union {
u_long mode1;
struct {
u_short port;
u_char enable;
u_char forward;
} mode2;
} pcitag_t;
/*
* Type of a value read from or written to a configuration register.
* Always 32 bits.
*/
typedef u_int32_t pcireg_t;
extern int pci_mode;
extern int pci_mode_detect __P((void));