xref: /dragonfly/sys/bus/pci/pcib_if.m (revision 27f48495) 
1#
2# Copyright (c) 2000 Doug Rabson
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8# 1. Redistributions of source code must retain the above copyright
9#    notice, this list of conditions and the following disclaimer.
10# 2. Redistributions in binary form must reproduce the above copyright
11#    notice, this list of conditions and the following disclaimer in the
12#    documentation and/or other materials provided with the distribution.
13#
14# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24# SUCH DAMAGE.
25#
26# $FreeBSD: src/sys/pci/pcib_if.m,v 1.2 2000/10/16 19:43:44 imp Exp $
27# $DragonFly: src/sys/bus/pci/pcib_if.m,v 1.1 2004/01/15 18:22:22 joerg Exp $
28#
29
30#include <sys/bus.h>
31
32INTERFACE pcib;
33
34#
35# Return the number of slots on the attached PCI bus.
36#
37METHOD int maxslots {
38	device_t	dev;
39};
40
41#
42# Read configuration space on the PCI bus. The bus, slot and func
43# arguments determine the device which is being read and the reg
44# argument is a byte offset into configuration space for that
45# device. The width argument (which should be 1, 2 or 4) specifies how
46# many byte of configuration space to read from that offset.
47#
48METHOD u_int32_t read_config {
49	device_t	dev;
50	int		bus;
51	int		slot;
52	int		func;
53	int		reg;
54	int		width;
55};
56
57#
58# Write configuration space on the PCI bus. The bus, slot and func
59# arguments determine the device which is being written and the reg
60# argument is a byte offset into configuration space for that
61# device. The value field is written to the configuration space, with
62# the number of bytes written depending on the width argument.
63#
64METHOD void write_config {
65	device_t	dev;
66	int		bus;
67	int		slot;
68	int		func;
69	int		reg;
70	u_int32_t	value;
71	int		width;
72};
73
74#
75# Route an interrupt.  Returns a value suitable for stuffing into
76# a device's interrupt register.
77#
78METHOD int route_interrupt {
79	device_t bus;
80	device_t device;
81	int pin;
82};
83