OsdInterrupt.c revision 77432 
1/*-
2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2000 BSDi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *	$FreeBSD: head/sys/dev/acpica/Osd/OsdInterrupt.c 77432 2001-05-29 20:13:42Z msmith $
28 */
29
30/*
31 * 6.5 : Interrupt handling
32 */
33
34#include "acpi.h"
35
36#include <sys/bus.h>
37#include <machine/resource.h>
38#include <machine/bus.h>
39#include <sys/rman.h>
40
41#include <dev/acpica/acpivar.h>
42
43#define _COMPONENT	ACPI_OS_SERVICES
44MODULE_NAME("INTERRUPT")
45
46/*
47 * XXX this does not correctly free resources in the case of partically successful
48 * attachment.
49 */
50ACPI_STATUS
51AcpiOsInstallInterruptHandler(UINT32 InterruptNumber, OSD_HANDLER ServiceRoutine, void *Context)
52{
53    struct acpi_softc	*sc;
54
55    FUNCTION_TRACE(__func__);
56
57    if ((InterruptNumber < 0) || (InterruptNumber > 255))
58	return_ACPI_STATUS(AE_BAD_PARAMETER);
59    if (ServiceRoutine == NULL)
60	return_ACPI_STATUS(AE_BAD_PARAMETER);
61
62    if ((sc = devclass_get_softc(acpi_devclass, 0)) == NULL)
63	panic("can't find ACPI device to register interrupt");
64    if (sc->acpi_dev == NULL)
65	panic("acpi softc has invalid device");
66
67    /*
68     * This isn't strictly true, as we ought to be able to handle > 1 interrupt.  The ACPI
69     * spec doesn't call for this though.
70     */
71    if (sc->acpi_irq != NULL) {
72	device_printf(sc->acpi_dev, "attempt to register more than one interrupt handler\n");
73	return_ACPI_STATUS(AE_EXIST);
74    }
75    sc->acpi_irq_rid = 0;
76    bus_set_resource(sc->acpi_dev, SYS_RES_IRQ, 0, InterruptNumber, 1);
77    if ((sc->acpi_irq = bus_alloc_resource(sc->acpi_dev, SYS_RES_IRQ, &sc->acpi_irq_rid, 0, ~0, 1,
78					   RF_SHAREABLE | RF_ACTIVE)) == NULL) {
79	device_printf(sc->acpi_dev, "could not allocate SCI interrupt\n");
80	return_ACPI_STATUS(AE_EXIST);
81    }
82    if (bus_setup_intr(sc->acpi_dev, sc->acpi_irq, INTR_TYPE_MISC, (driver_intr_t *)ServiceRoutine, Context,
83		       &sc->acpi_irq_handle)) {
84	device_printf(sc->acpi_dev, "could not set up SCI interrupt\n");
85	return_ACPI_STATUS(AE_EXIST);
86    }
87
88    return_ACPI_STATUS(AE_OK);
89}
90
91ACPI_STATUS
92AcpiOsRemoveInterruptHandler (UINT32 InterruptNumber, OSD_HANDLER ServiceRoutine)
93{
94    struct acpi_softc	*sc;
95
96    FUNCTION_TRACE(__func__);
97
98    if ((InterruptNumber < 0) || (InterruptNumber > 255))
99	return_ACPI_STATUS(AE_BAD_PARAMETER);
100    if (ServiceRoutine == NULL)
101	return_ACPI_STATUS(AE_BAD_PARAMETER);
102
103    if ((sc = devclass_get_softc(acpi_devclass, 0)) == NULL)
104	panic("can't find ACPI device to deregister interrupt");
105
106    if (sc->acpi_irq == NULL)
107	return_ACPI_STATUS(AE_NOT_EXIST);
108
109    bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle);
110    bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq);
111    bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0);
112
113    sc->acpi_irq = NULL;
114
115    return_ACPI_STATUS(AE_OK);
116}
117
118