FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/pcib_if.m
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 # $FreeBSD$
27 #
28
29 #include <sys/bus.h>
30
31 INTERFACE pcib;
32
33 #
34 # Return the number of slots on the attached PCI bus.
35 #
36 METHOD 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 #
47 METHOD 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 #
63 METHOD 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 #
77 METHOD int route_interrupt {
78 device_t pcib;
79 device_t dev;
80 int pin;
81 };
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