pcib_if.m revision 145019 
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 145019 2005-04-13 16:30:30Z imp $
27#
28
29#include <sys/bus.h>
30
31INTERFACE pcib;
32
33CODE {
34	static int
35	null_route_interrupt(device_t pcib, device_t dev, int pin)
36	{
37		return (PCI_INVALID_IRQ);
38	}
39};
40
41#
42# Return the number of slots on the attached PCI bus.
43#
44METHOD int maxslots {
45	device_t	dev;
46};
47
48#
49# Read configuration space on the PCI bus. The bus, slot and func
50# arguments determine the device which is being read and the reg
51# argument is a byte offset into configuration space for that
52# device. The width argument (which should be 1, 2 or 4) specifies how
53# many byte of configuration space to read from that offset.
54#
55METHOD u_int32_t read_config {
56	device_t	dev;
57	u_int		bus;
58	u_int		slot;
59	u_int		func;
60	u_int		reg;
61	int		width;
62};
63
64#
65# Write configuration space on the PCI bus. The bus, slot and func
66# arguments determine the device which is being written and the reg
67# argument is a byte offset into configuration space for that
68# device. The value field is written to the configuration space, with
69# the number of bytes written depending on the width argument.
70#
71METHOD void write_config {
72	device_t	dev;
73	u_int		bus;
74	u_int		slot;
75	u_int		func;
76	u_int		reg;
77	u_int32_t	value;
78	int		width;
79};
80
81#
82# Route an interrupt.  Returns a value suitable for stuffing into 
83# a device's interrupt register.
84#
85METHOD int route_interrupt {
86	device_t pcib;
87	device_t dev;
88	int pin;
89} default null_route_interrupt;
90