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:

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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 71875 2001-01-31 09:34:54Z 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 OS_DEPENDENT
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(__FUNCTION__);
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(__FUNCTION__);
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