2 # Copyright (c) 2000 Doug Rabson
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions
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.
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
26 # $FreeBSD: src/sys/dev/pci/pcib_if.m,v 1.11.8.1 2009/04/15 03:14:26 kensmith Exp $
30 #include <bus/pci/pcivar.h>
36 null_route_interrupt(device_t pcib, device_t dev, int pin)
38 return (PCI_INVALID_IRQ);
43 # Return the number of slots on the attached PCI bus.
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.
56 METHOD u_int32_t read_config {
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.
72 METHOD void write_config {
83 # Route an interrupt. Returns a value suitable for stuffing into
84 # a device's interrupt register.
86 METHOD int route_interrupt {
90 } DEFAULT null_route_interrupt;
93 # Allocate 'count' MSI messsages mapped onto 'count' IRQs. 'irq' points
94 # to an array of at least 'count' ints. The max number of messages this
95 # device supports is included so that the MD code can take that into
96 # account when assigning resources so that the proper number of low bits
97 # are clear in the resulting message data value.
99 METHOD int alloc_msi {
108 # Release 'count' MSI messages mapped onto 'count' IRQs stored in the
109 # array pointed to by 'irqs'.
111 METHOD int release_msi {
119 # Allocate a single MSI-X message mapped onto '*irq'.
121 METHOD int alloc_msix {
128 # Release a single MSI-X message mapped onto 'irq'.
130 METHOD int release_msix {
137 # Determine the MSI/MSI-X message address and data for 'irq'. The address
138 # is returned in '*addr', and the data in '*data'.