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: src/sys/dev/acpica/Osd/OsdInterrupt.c,v 1.12.6.1 2003/08/22 20:49:21 jhb Exp $ 28 * $DragonFly: src/sys/dev/acpica/Osd/Attic/OsdInterrupt.c,v 1.1 2003/09/24 03:32:16 drhodus Exp $ 29 */ 30 31 /* 32 * 6.5 : Interrupt handling 33 */ 34 35 #include "acpi.h" 36 37 #include <sys/bus.h> 38 #include <machine/resource.h> 39 #include <machine/bus.h> 40 #include <sys/rman.h> 41 42 #include <dev/acpica/acpivar.h> 43 44 #define _COMPONENT ACPI_OS_SERVICES 45 ACPI_MODULE_NAME("INTERRUPT") 46 47 static void InterruptWrapper(void *arg); 48 static OSD_HANDLER InterruptHandler; 49 50 /* 51 * XXX this does not correctly free resources in the case of partically successful 52 * attachment. 53 */ 54 ACPI_STATUS 55 AcpiOsInstallInterruptHandler(UINT32 InterruptNumber, OSD_HANDLER ServiceRoutine, void *Context) 56 { 57 struct acpi_softc *sc; 58 59 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 60 61 if ((sc = devclass_get_softc(devclass_find("acpi"), 0)) == NULL) 62 panic("can't find ACPI device to register interrupt"); 63 if (sc->acpi_dev == NULL) 64 panic("acpi softc has invalid device"); 65 66 if ((InterruptNumber < 0) || (InterruptNumber > 255)) 67 return_ACPI_STATUS(AE_BAD_PARAMETER); 68 if (ServiceRoutine == NULL) 69 return_ACPI_STATUS(AE_BAD_PARAMETER); 70 if (InterruptHandler != NULL && InterruptHandler != ServiceRoutine) { 71 device_printf(sc->acpi_dev, "can't register more than one ACPI interrupt\n"); 72 return_ACPI_STATUS(AE_BAD_PARAMETER); 73 } 74 InterruptHandler = ServiceRoutine; 75 76 /* 77 * This isn't strictly true, as we ought to be able to handle > 1 interrupt. The ACPI 78 * spec doesn't call for this though. 79 */ 80 if (sc->acpi_irq != NULL) { 81 device_printf(sc->acpi_dev, "attempt to register more than one interrupt handler\n"); 82 return_ACPI_STATUS(AE_ALREADY_EXISTS); 83 } 84 sc->acpi_irq_rid = 0; 85 bus_set_resource(sc->acpi_dev, SYS_RES_IRQ, 0, InterruptNumber, 1); 86 if ((sc->acpi_irq = bus_alloc_resource(sc->acpi_dev, SYS_RES_IRQ, &sc->acpi_irq_rid, 0, ~0, 1, 87 RF_SHAREABLE | RF_ACTIVE)) == NULL) { 88 device_printf(sc->acpi_dev, "could not allocate SCI interrupt\n"); 89 return_ACPI_STATUS(AE_ALREADY_EXISTS); 90 } 91 if (bus_setup_intr(sc->acpi_dev, sc->acpi_irq, INTR_TYPE_MISC, (driver_intr_t *)InterruptWrapper, 92 Context, &sc->acpi_irq_handle)) { 93 device_printf(sc->acpi_dev, "could not set up SCI interrupt\n"); 94 return_ACPI_STATUS(AE_ALREADY_EXISTS); 95 } 96 97 return_ACPI_STATUS(AE_OK); 98 } 99 100 ACPI_STATUS 101 AcpiOsRemoveInterruptHandler (UINT32 InterruptNumber, OSD_HANDLER ServiceRoutine) 102 { 103 struct acpi_softc *sc; 104 105 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 106 107 if ((InterruptNumber < 0) || (InterruptNumber > 255)) 108 return_ACPI_STATUS(AE_BAD_PARAMETER); 109 if (ServiceRoutine == NULL) 110 return_ACPI_STATUS(AE_BAD_PARAMETER); 111 112 if ((sc = devclass_get_softc(devclass_find("acpi"), 0)) == NULL) 113 panic("can't find ACPI device to deregister interrupt"); 114 115 if (sc->acpi_irq == NULL) 116 return_ACPI_STATUS(AE_NOT_EXIST); 117 118 bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle); 119 bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq); 120 bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0); 121 122 sc->acpi_irq = NULL; 123 124 return_ACPI_STATUS(AE_OK); 125 } 126 127 /* 128 * Interrupt handler wrapper. 129 */ 130 static void 131 InterruptWrapper(void *arg) 132 { 133 ACPI_LOCK_DECL; 134 135 ACPI_LOCK; 136 InterruptHandler(arg); 137 ACPI_UNLOCK; 138 } 139