pcib_if.m revision 139749 
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: head/sys/dev/pci/pcib_if.m 139749 2005-01-06 01:43:34Z imp $
27#
28
29#include <sys/bus.h>
30
31INTERFACE pcib;
32
33#
34# Return the number of slots on the attached PCI bus.
35#
36METHOD int maxslots {
37	device_t	dev;
38};
39
40#
41# Read configuration space on the PCI bus. The bus, slot and func
42# arguments determine the device which is being read and the reg
43# argument is a byte offset into configuration space for that
44# device. The width argument (which should be 1, 2 or 4) specifies how
45# many byte of configuration space to read from that offset.
46#
47METHOD u_int32_t read_config {
48	device_t	dev;
49	u_int		bus;
50	u_int		slot;
51	u_int		func;
52	u_int		reg;
53	int		width;
54};
55
56#
57# Write configuration space on the PCI bus. The bus, slot and func
58# arguments determine the device which is being written and the reg
59# argument is a byte offset into configuration space for that
60# device. The value field is written to the configuration space, with
61# the number of bytes written depending on the width argument.
62#
63METHOD void write_config {
64	device_t	dev;
65	u_int		bus;
66	u_int		slot;
67	u_int		func;
68	u_int		reg;
69	u_int32_t	value;
70	int		width;
71};
72
73#
74# Route an interrupt.  Returns a value suitable for stuffing into 
75# a device's interrupt register.
76#
77METHOD int route_interrupt {
78	device_t pcib;
79	device_t dev;
80	int pin;
81};
82