xref: /freebsd/sys/dev/acpica/acpi_bus_if.m (revision 9768746b)
1#-
2# Copyright (c) 2016 The FreeBSD Foundation
3#
4# This software was developed by Andrew Turner under
5# sponsorship from the FreeBSD Foundation.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions
9# are met:
10# 1. Redistributions of source code must retain the above copyright
11#    notice, this list of conditions and the following disclaimer.
12# 2. Redistributions in binary form must reproduce the above copyright
13#    notice, this list of conditions and the following disclaimer in the
14#    documentation and/or other materials provided with the distribution.
15#
16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26# SUCH DAMAGE.
27#
28# $FreeBSD$
29
30#include <sys/types.h>
31#include <sys/systm.h>
32#include <sys/bus.h>
33
34INTERFACE acpi_bus;
35
36CODE {
37	static acpi_bus_map_intr_t acpi_bus_default_map_intr;
38
39	int
40	acpi_bus_default_map_intr(device_t bus, device_t dev, u_int irq,
41	    int trig, int pol)
42	{
43		device_t parent;
44
45		/* Pass up the hierarchy */
46		parent = device_get_parent(bus);
47		if (parent != NULL)
48			return (ACPI_BUS_MAP_INTR(parent, dev, irq, trig, pol));
49
50		panic("Unable to map interrupt %u", irq);
51	}
52};
53
54# Map an interrupt from ACPI space to the FreeBSD IRQ space. Note that
55# both of these may be different than the pysical interrupt space as this
56# may be local to each interrupt controller.
57#
58# This method also associates interrupt metadata with the interrupt,
59# removing the need for a post hoc configure step.
60METHOD int map_intr {
61	device_t bus;
62	device_t dev;
63	u_int irq;
64	int trig;
65	int pol;
66} DEFAULT acpi_bus_default_map_intr;
67