2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2000 BSDi
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
27 * $FreeBSD: src/sys/dev/acpica/Osd/OsdInterrupt.c,v 1.17 2004/04/14 03:41:06 njl Exp $
28 * $DragonFly: src/sys/dev/acpica5/Osd/OsdInterrupt.c,v 1.5 2005/06/04 14:25:45 corecode Exp $
32 * 6.5 : Interrupt handling
35 #include <sys/param.h>
36 #include <sys/kernel.h>
38 #include <machine/bus.h>
39 #include <machine/resource.h>
41 #include <sys/thread2.h>
44 #include <dev/acpica5/acpivar.h>
46 #define _COMPONENT ACPI_OS_SERVICES
47 ACPI_MODULE_NAME("INTERRUPT")
49 static void InterruptWrapper(void *arg);
51 static ACPI_OSD_HANDLER InterruptHandler;
52 static UINT32 InterruptOverride = 0;
55 AcpiOsInstallInterruptHandler(UINT32 InterruptNumber,
56 ACPI_OSD_HANDLER ServiceRoutine, void *Context)
58 struct acpi_softc *sc;
60 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
62 if ((sc = devclass_get_softc(devclass_find("acpi"), 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");
67 if (InterruptNumber < 0 || InterruptNumber > 255)
68 return_ACPI_STATUS (AE_BAD_PARAMETER);
69 if (ServiceRoutine == NULL)
70 return_ACPI_STATUS (AE_BAD_PARAMETER);
71 if (InterruptHandler != NULL) {
72 device_printf(sc->acpi_dev, "interrupt handler already installed\n");
73 return_ACPI_STATUS (AE_ALREADY_EXISTS);
75 InterruptHandler = ServiceRoutine;
78 * If the MADT contained an interrupt override directive for the SCI,
79 * we use that value instead of the one from the FADT.
81 if (InterruptOverride != 0) {
82 device_printf(sc->acpi_dev,
83 "Overriding SCI Interrupt from IRQ %u to IRQ %u\n",
84 InterruptNumber, InterruptOverride);
85 InterruptNumber = InterruptOverride;
88 /* Set up the interrupt resource. */
90 bus_set_resource(sc->acpi_dev, SYS_RES_IRQ, 0, InterruptNumber, 1);
91 sc->acpi_irq = bus_alloc_resource_any(sc->acpi_dev, SYS_RES_IRQ,
92 &sc->acpi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
93 if (sc->acpi_irq == NULL) {
94 device_printf(sc->acpi_dev, "could not allocate interrupt\n");
97 if (bus_setup_intr(sc->acpi_dev, sc->acpi_irq, INTR_TYPE_MISC,
98 InterruptWrapper, Context, &sc->acpi_irq_handle, NULL)) {
99 device_printf(sc->acpi_dev, "could not set up interrupt\n");
103 return_ACPI_STATUS (AE_OK);
106 if (sc->acpi_irq_handle)
107 bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle);
108 sc->acpi_irq_handle = NULL;
110 bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq);
112 bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0);
113 InterruptHandler = NULL;
115 return_ACPI_STATUS (AE_ALREADY_EXISTS);
119 AcpiOsRemoveInterruptHandler(UINT32 InterruptNumber, ACPI_OSD_HANDLER ServiceRoutine)
121 struct acpi_softc *sc;
123 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
125 if (InterruptNumber < 0 || InterruptNumber > 255)
126 return_ACPI_STATUS (AE_BAD_PARAMETER);
127 if (ServiceRoutine == NULL)
128 return_ACPI_STATUS (AE_BAD_PARAMETER);
130 if ((sc = devclass_get_softc(devclass_find("acpi"), 0)) == NULL)
131 panic("can't find ACPI device to deregister interrupt");
133 if (sc->acpi_irq == NULL)
134 return_ACPI_STATUS (AE_NOT_EXIST);
136 bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle);
137 bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq);
138 bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0);
141 InterruptHandler = NULL;
143 return_ACPI_STATUS (AE_OK);
147 acpi_OverrideInterruptLevel(UINT32 InterruptNumber)
150 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
152 if (InterruptOverride != 0)
153 return_ACPI_STATUS (AE_ALREADY_EXISTS);
154 InterruptOverride = InterruptNumber;
155 return_ACPI_STATUS (AE_OK);
159 InterruptWrapper(void *arg)
164 InterruptHandler(arg);