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 * $FreeBSD$ 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 /* 44 * XXX this does not correctly free resources in the case of partically successful 45 * attachment. 46 */ 47 ACPI_STATUS 48 AcpiOsInstallInterruptHandler(UINT32 InterruptNumber, OSD_HANDLER ServiceRoutine, void *Context) 49 { 50 struct acpi_softc *sc; 51 52 if ((InterruptNumber < 0) || (InterruptNumber > 255)) 53 return(AE_BAD_PARAMETER); 54 if (ServiceRoutine == NULL) 55 return(AE_BAD_PARAMETER); 56 57 if ((sc = devclass_get_softc(acpi_devclass, 0)) == NULL) 58 panic("can't find ACPI device to register interrupt"); 59 if (sc->acpi_dev == NULL) 60 panic("acpi softc has invalid device"); 61 62 /* 63 * This isn't strictly true, as we ought to be able to handle > 1 interrupt. The ACPI 64 * spec doesn't call for this though. 65 */ 66 if (sc->acpi_irq != NULL) { 67 device_printf(sc->acpi_dev, "attempt to register more than one interrupt handler\n"); 68 return(AE_EXIST); 69 } 70 sc->acpi_irq_rid = 0; 71 bus_set_resource(sc->acpi_dev, SYS_RES_IRQ, 0, InterruptNumber, 1); 72 if ((sc->acpi_irq = bus_alloc_resource(sc->acpi_dev, SYS_RES_IRQ, &sc->acpi_irq_rid, 0, ~0, 1, 73 RF_SHAREABLE | RF_ACTIVE)) == NULL) { 74 device_printf(sc->acpi_dev, "could not allocate SCI interrupt\n"); 75 return(AE_EXIST); 76 } 77 if (bus_setup_intr(sc->acpi_dev, sc->acpi_irq, INTR_TYPE_MISC, (driver_intr_t *)ServiceRoutine, Context, 78 &sc->acpi_irq_handle)) { 79 device_printf(sc->acpi_dev, "could not set up SCI interrupt\n"); 80 return(AE_EXIST); 81 } 82 83 return(AE_OK); 84 } 85 86 ACPI_STATUS 87 AcpiOsRemoveInterruptHandler (UINT32 InterruptNumber, OSD_HANDLER ServiceRoutine) 88 { 89 struct acpi_softc *sc; 90 91 if ((InterruptNumber < 0) || (InterruptNumber > 255)) 92 return(AE_BAD_PARAMETER); 93 if (ServiceRoutine == NULL) 94 return(AE_BAD_PARAMETER); 95 96 if ((sc = devclass_get_softc(acpi_devclass, 0)) == NULL) 97 panic("can't find ACPI device to deregister interrupt"); 98 99 if (sc->acpi_irq == NULL) 100 return(AE_NOT_EXIST); 101 102 bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle); 103 bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq); 104 bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0); 105 106 sc->acpi_irq = NULL; 107 108 return(AE_OK); 109 } 110 111