68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
/* $NetBSD: pci_machdep.h,v 1.2 1994/10/27 04:21:40 cgd Exp $ */
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
/* Need this for struct intrhand. */
|
|
#include <i386/isa/isavar.h>
|
|
|
|
/*
|
|
* 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));
|