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