diff options
Diffstat (limited to 'sys/dev/acpica/Osd/OsdInterrupt.c')
-rw-r--r-- | sys/dev/acpica/Osd/OsdInterrupt.c | 229 |
1 files changed, 149 insertions, 80 deletions
diff --git a/sys/dev/acpica/Osd/OsdInterrupt.c b/sys/dev/acpica/Osd/OsdInterrupt.c index 158a2b9..74db170 100644 --- a/sys/dev/acpica/Osd/OsdInterrupt.c +++ b/sys/dev/acpica/Osd/OsdInterrupt.c @@ -1,6 +1,7 @@ /*- * Copyright (c) 2000 Michael Smith * Copyright (c) 2000 BSDi + * Copyright (c) 2011 Jung-uk Kim <jkim@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -35,10 +36,13 @@ __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/kernel.h> #include <sys/bus.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/mutex.h> #include <machine/bus.h> #include <machine/resource.h> #include <sys/rman.h> - + #include <contrib/dev/acpica/include/acpi.h> #include <contrib/dev/acpica/include/accommon.h> @@ -47,101 +51,166 @@ __FBSDID("$FreeBSD$"); #define _COMPONENT ACPI_OS_SERVICES ACPI_MODULE_NAME("INTERRUPT") -static UINT32 InterruptOverride = 0; +MALLOC_DEFINE(M_ACPIINTR, "acpiintr", "ACPI interrupt"); + +struct acpi_intr { + SLIST_ENTRY(acpi_intr) ai_link; + struct resource *ai_irq; + int ai_rid; + void *ai_handle; + int ai_number; + ACPI_OSD_HANDLER ai_handler; + void *ai_context; +}; +static SLIST_HEAD(, acpi_intr) acpi_intr_list = + SLIST_HEAD_INITIALIZER(acpi_intr_list); +static struct mtx acpi_intr_lock; + +static UINT32 InterruptOverride; + +static void +acpi_intr_init(struct mtx *lock) +{ + + mtx_init(lock, "ACPI interrupt lock", NULL, MTX_DEF); +} + +SYSINIT(acpi_intr, SI_SUB_DRIVERS, SI_ORDER_FIRST, acpi_intr_init, + &acpi_intr_lock); + +static int +acpi_intr_handler(void *arg) +{ + struct acpi_intr *ai; + + ai = arg; + KASSERT(ai != NULL && ai->ai_handler != NULL, + ("invalid ACPI interrupt handler")); + if (ai->ai_handler(ai->ai_context) == ACPI_INTERRUPT_HANDLED) + return (FILTER_HANDLED); + return (FILTER_STRAY); +} ACPI_STATUS AcpiOsInstallInterruptHandler(UINT32 InterruptNumber, ACPI_OSD_HANDLER ServiceRoutine, void *Context) { - struct acpi_softc *sc; - - ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); - - if ((sc = devclass_get_softc(devclass_find("acpi"), 0)) == NULL) - panic("can't find ACPI device to register interrupt"); - if (sc->acpi_dev == NULL) - panic("acpi softc has invalid device"); - - if (InterruptNumber < 0 || InterruptNumber > 255) - return_ACPI_STATUS (AE_BAD_PARAMETER); - if (ServiceRoutine == NULL) - return_ACPI_STATUS (AE_BAD_PARAMETER); - - /* - * If the MADT contained an interrupt override directive for the SCI, - * we use that value instead of the one from the FADT. - */ - if (InterruptOverride != 0) { - device_printf(sc->acpi_dev, - "Overriding SCI Interrupt from IRQ %u to IRQ %u\n", - InterruptNumber, InterruptOverride); - InterruptNumber = InterruptOverride; - } - - /* Set up the interrupt resource. */ - sc->acpi_irq_rid = 0; - bus_set_resource(sc->acpi_dev, SYS_RES_IRQ, 0, InterruptNumber, 1); - sc->acpi_irq = bus_alloc_resource_any(sc->acpi_dev, SYS_RES_IRQ, - &sc->acpi_irq_rid, RF_SHAREABLE | RF_ACTIVE); - if (sc->acpi_irq == NULL) { - device_printf(sc->acpi_dev, "could not allocate interrupt\n"); - goto error; - } - if (bus_setup_intr(sc->acpi_dev, sc->acpi_irq, INTR_TYPE_MISC|INTR_MPSAFE, - NULL, (driver_intr_t *)ServiceRoutine, Context, &sc->acpi_irq_handle)) { - device_printf(sc->acpi_dev, "could not set up interrupt\n"); - goto error; - } - - return_ACPI_STATUS (AE_OK); + struct acpi_softc *sc; + struct acpi_intr *ai, *ap; + + ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); + + sc = devclass_get_softc(devclass_find("acpi"), 0); + KASSERT(sc != NULL && sc->acpi_dev != NULL, + ("can't find ACPI device to register interrupt")); + + if (InterruptNumber < 0 || InterruptNumber > 255 || + ServiceRoutine == NULL) + return_ACPI_STATUS (AE_BAD_PARAMETER); + + ai = malloc(sizeof(*ai), M_ACPIINTR, M_WAITOK | M_ZERO); + mtx_lock(&acpi_intr_lock); + SLIST_FOREACH(ap, &acpi_intr_list, ai_link) { + if (InterruptNumber == ap->ai_number || + (InterruptNumber == InterruptOverride && + InterruptNumber != AcpiGbl_FADT.SciInterrupt)) { + mtx_unlock(&acpi_intr_lock); + return_ACPI_STATUS (AE_ALREADY_EXISTS); + } + if (ai->ai_rid <= ap->ai_rid) + ai->ai_rid = ap->ai_rid + 1; + } + ai->ai_number = InterruptNumber; + ai->ai_handler = ServiceRoutine; + ai->ai_context = Context; + + /* + * If the MADT contained an interrupt override directive for the SCI, + * we use that value instead of the one from the FADT. + */ + if (InterruptOverride != 0 && + InterruptNumber == AcpiGbl_FADT.SciInterrupt) { + device_printf(sc->acpi_dev, + "Overriding SCI from IRQ %u to IRQ %u\n", + InterruptNumber, InterruptOverride); + InterruptNumber = InterruptOverride; + } + + /* Set up the interrupt resource. */ + bus_set_resource(sc->acpi_dev, SYS_RES_IRQ, ai->ai_rid, + InterruptNumber, 1); + ai->ai_irq = bus_alloc_resource_any(sc->acpi_dev, SYS_RES_IRQ, + &ai->ai_rid, RF_SHAREABLE | RF_ACTIVE); + if (ai->ai_irq == NULL) { + device_printf(sc->acpi_dev, "could not allocate interrupt\n"); + goto error; + } + if (bus_setup_intr(sc->acpi_dev, ai->ai_irq, + INTR_TYPE_MISC | INTR_MPSAFE, acpi_intr_handler, NULL, ai, + &ai->ai_handle) != 0) { + device_printf(sc->acpi_dev, "could not set up interrupt\n"); + goto error; + } + SLIST_INSERT_HEAD(&acpi_intr_list, ai, ai_link); + mtx_unlock(&acpi_intr_lock); + return_ACPI_STATUS (AE_OK); error: - if (sc->acpi_irq_handle) - bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle); - sc->acpi_irq_handle = NULL; - if (sc->acpi_irq) - bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq); - sc->acpi_irq = NULL; - bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0); - - return_ACPI_STATUS (AE_ALREADY_EXISTS); + mtx_unlock(&acpi_intr_lock); + if (ai->ai_handle != NULL) + bus_teardown_intr(sc->acpi_dev, ai->ai_irq, ai->ai_handle); + if (ai->ai_irq != NULL) + bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, ai->ai_rid, + ai->ai_irq); + bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, ai->ai_rid); + free(ai, M_ACPIINTR); + return_ACPI_STATUS (AE_ALREADY_EXISTS); } ACPI_STATUS -AcpiOsRemoveInterruptHandler(UINT32 InterruptNumber, ACPI_OSD_HANDLER ServiceRoutine) +AcpiOsRemoveInterruptHandler(UINT32 InterruptNumber, + ACPI_OSD_HANDLER ServiceRoutine) { - struct acpi_softc *sc; - - ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); - - if (InterruptNumber < 0 || InterruptNumber > 255) - return_ACPI_STATUS (AE_BAD_PARAMETER); - if (ServiceRoutine == NULL) - return_ACPI_STATUS (AE_BAD_PARAMETER); - - if ((sc = devclass_get_softc(devclass_find("acpi"), 0)) == NULL) - panic("can't find ACPI device to deregister interrupt"); - - if (sc->acpi_irq == NULL) - return_ACPI_STATUS (AE_NOT_EXIST); - - bus_teardown_intr(sc->acpi_dev, sc->acpi_irq, sc->acpi_irq_handle); - bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, 0, sc->acpi_irq); - bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, 0); - - sc->acpi_irq = NULL; - - return_ACPI_STATUS (AE_OK); + struct acpi_softc *sc; + struct acpi_intr *ai; + + ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); + + sc = devclass_get_softc(devclass_find("acpi"), 0); + KASSERT(sc != NULL && sc->acpi_dev != NULL, + ("can't find ACPI device to deregister interrupt")); + + if (InterruptNumber < 0 || InterruptNumber > 255 || + ServiceRoutine == NULL) + return_ACPI_STATUS (AE_BAD_PARAMETER); + mtx_lock(&acpi_intr_lock); + SLIST_FOREACH(ai, &acpi_intr_list, ai_link) + if (InterruptNumber == ai->ai_number) { + if (ServiceRoutine != ai->ai_handler) { + mtx_unlock(&acpi_intr_lock); + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + SLIST_REMOVE(&acpi_intr_list, ai, acpi_intr, ai_link); + break; + } + mtx_unlock(&acpi_intr_lock); + if (ai == NULL) + return_ACPI_STATUS (AE_NOT_EXIST); + bus_teardown_intr(sc->acpi_dev, ai->ai_irq, ai->ai_handle); + bus_release_resource(sc->acpi_dev, SYS_RES_IRQ, ai->ai_rid, ai->ai_irq); + bus_delete_resource(sc->acpi_dev, SYS_RES_IRQ, ai->ai_rid); + free(ai, M_ACPIINTR); + return_ACPI_STATUS (AE_OK); } ACPI_STATUS acpi_OverrideInterruptLevel(UINT32 InterruptNumber) { - ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); + ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); - if (InterruptOverride != 0) - return_ACPI_STATUS (AE_ALREADY_EXISTS); - InterruptOverride = InterruptNumber; - return_ACPI_STATUS (AE_OK); + if (InterruptOverride != 0) + return_ACPI_STATUS (AE_ALREADY_EXISTS); + InterruptOverride = InterruptNumber; + return_ACPI_STATUS (AE_OK); } |