Module Name:    src
Committed By:   jmcneill
Date:           Mon Oct 22 22:29:35 UTC 2018

Modified Files:
        src/sys/dev/acpi: files.acpi plgpio_acpi.c
Added Files:
        src/sys/dev/acpi: acpi_event.c acpi_event.h

Log Message:
Factor out common ACPI event code into a shared module.


To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/sys/dev/acpi/acpi_event.c \
    src/sys/dev/acpi/acpi_event.h
cvs rdiff -u -r1.109 -r1.110 src/sys/dev/acpi/files.acpi
cvs rdiff -u -r1.2 -r1.3 src/sys/dev/acpi/plgpio_acpi.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/sys/dev/acpi/files.acpi
diff -u src/sys/dev/acpi/files.acpi:1.109 src/sys/dev/acpi/files.acpi:1.110
--- src/sys/dev/acpi/files.acpi:1.109	Sun Oct 21 12:26:38 2018
+++ src/sys/dev/acpi/files.acpi	Mon Oct 22 22:29:35 2018
@@ -1,4 +1,4 @@
-#	$NetBSD: files.acpi,v 1.109 2018/10/21 12:26:38 jmcneill Exp $
+#	$NetBSD: files.acpi,v 1.110 2018/10/22 22:29:35 jmcneill Exp $
 
 include "dev/acpi/acpica/files.acpica"
 
@@ -21,6 +21,7 @@ device	acpi: acpica, acpiapmbus, acpinod
 attach	acpi at acpibus
 file	dev/acpi/acpi.c			acpi
 file	dev/acpi/acpi_debug.c		acpi
+file	dev/acpi/acpi_event.c		acpi
 file	dev/acpi/acpi_i2c.c		acpi
 file	dev/acpi/acpi_mcfg.c		acpi & pci
 file	dev/acpi/acpi_pci.c		acpi

Index: src/sys/dev/acpi/plgpio_acpi.c
diff -u src/sys/dev/acpi/plgpio_acpi.c:1.2 src/sys/dev/acpi/plgpio_acpi.c:1.3
--- src/sys/dev/acpi/plgpio_acpi.c:1.2	Sun Oct 21 18:31:58 2018
+++ src/sys/dev/acpi/plgpio_acpi.c	Mon Oct 22 22:29:35 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: plgpio_acpi.c,v 1.2 2018/10/21 18:31:58 jmcneill Exp $ */
+/* $NetBSD: plgpio_acpi.c,v 1.3 2018/10/22 22:29:35 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: plgpio_acpi.c,v 1.2 2018/10/21 18:31:58 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: plgpio_acpi.c,v 1.3 2018/10/22 22:29:35 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -40,6 +40,7 @@ __KERNEL_RCSID(0, "$NetBSD: plgpio_acpi.
 
 #include <dev/acpi/acpireg.h>
 #include <dev/acpi/acpivar.h>
+#include <dev/acpi/acpi_event.h>
 
 #include <dev/gpio/gpiovar.h>
 #include <dev/ic/pl061var.h>
@@ -47,28 +48,18 @@ __KERNEL_RCSID(0, "$NetBSD: plgpio_acpi.
 
 struct plgpio_acpi_softc;
 
-struct plgpio_acpi_event {
-	struct plgpio_acpi_softc *ev_sc;
-	u_int			ev_pin;
-	ACPI_HANDLE		ev_method;
-	bool			ev_method_evt;
-};
-
 struct plgpio_acpi_softc {
 	struct plgpio_softc	sc_base;
 
 	ACPI_HANDLE		sc_handle;
-	uint32_t		sc_aei_pins;		/* bitmask */
-	ACPI_RESOURCE_GPIO	sc_aei_res[8];
 
-	struct plgpio_acpi_event sc_event[8];
+	struct acpi_event *	sc_event[8];
 };
 
 static int	plgpio_acpi_match(device_t, cfdata_t, void *);
 static void	plgpio_acpi_attach(device_t, device_t, void *);
 
-static void	plgpio_acpi_init(struct plgpio_acpi_softc *);
-static void	plgpio_acpi_notify(void *);
+static void	plgpio_acpi_register_event(void *, struct acpi_event *, ACPI_RESOURCE_GPIO *);
 static int	plgpio_acpi_intr(void *);
 
 CFATTACH_DECL_NEW(plgpio_acpi, sizeof(struct plgpio_acpi_softc), plgpio_acpi_match, plgpio_acpi_attach, NULL, NULL);
@@ -132,161 +123,83 @@ plgpio_acpi_attach(device_t parent, devi
 
 	plgpio_attach(sc);
 
+	if (ACPI_FAILURE(acpi_event_create_gpio(self, asc->sc_handle, plgpio_acpi_register_event, asc))) {
+		aprint_error_dev(self, "failed to create events\n");
+		goto done;
+	}
+
 	const int type = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL;
 	ih = intr_establish(irq->ar_irq, IPL_VM, type, plgpio_acpi_intr, asc);
 	if (ih == NULL)
 		aprint_error_dev(self, "couldn't establish interrupt\n");
 
-	plgpio_acpi_init(asc);
-
 done:
 	acpi_resource_cleanup(&res);
 }
 
-static ACPI_STATUS
-plgpio_acpi_resource_cb(ACPI_RESOURCE *res, void *ctx)
-{
-	struct plgpio_acpi_softc * const asc = ctx;
-	ACPI_RESOURCE_GPIO *gpio;
-	UINT16 pin;
-
-	if (res->Type != ACPI_RESOURCE_TYPE_GPIO)
-		return AE_OK;
-
-	gpio = &res->Data.Gpio;
-	if (gpio->ConnectionType != ACPI_RESOURCE_GPIO_TYPE_INT ||
-	    gpio->PinTableLength != 1)
-		return AE_OK;
-
-	pin = gpio->PinTable[0];
-	if (pin >= __arraycount(asc->sc_aei_res)) {
-		aprint_error_dev(asc->sc_base.sc_dev, "_AEI pin %u out of range\n", pin);
-		return AE_OK;
-	}
-
-	asc->sc_aei_pins |= __BIT(pin);
-	asc->sc_aei_res[pin] = *gpio;
-
-	return AE_OK;
-}
-
 static void
-plgpio_acpi_init(struct plgpio_acpi_softc *asc)
+plgpio_acpi_register_event(void *priv, struct acpi_event *ev, ACPI_RESOURCE_GPIO *gpio)
 {
+	struct plgpio_acpi_softc * const asc = priv;
 	struct plgpio_softc * const sc = &asc->sc_base;
-	ACPI_RESOURCE_GPIO *gpio;
-	ACPI_HANDLE handle;
-	char namebuf[5];
-	ACPI_STATUS rv;
 	uint32_t ibe, iev, is, ie;
-	int pin;
 
-	rv = AcpiWalkResources(asc->sc_handle, "_AEI", plgpio_acpi_resource_cb, asc);
-	if (ACPI_FAILURE(rv)) {
-		if (rv != AE_NOT_FOUND)
-			aprint_error_dev(asc->sc_base.sc_dev, "failed to parse _AEI: %s\n",
-			    AcpiFormatException(rv));
+	const int pin = gpio->PinTable[0];
+
+	if (pin >= __arraycount(asc->sc_event)) {
+		aprint_error_dev(asc->sc_base.sc_dev,
+		    "ignoring event for pin %u (out of range)\n", pin);
 		return;
 	}
-
-	if (!asc->sc_aei_pins)
+	if (asc->sc_event[pin] != NULL) {
+		aprint_error_dev(asc->sc_base.sc_dev,
+		    "ignoring duplicate pin %u\n", pin);
 		return;
+	}
 
-	aprint_verbose_dev(asc->sc_base.sc_dev, "ACPI event pins: %#x\n", asc->sc_aei_pins);
-
-	sc->sc_reserved_mask = asc->sc_aei_pins;
+	asc->sc_event[pin] = ev;
+	asc->sc_base.sc_reserved_mask |= __BIT(pin);
 
 	/*
-	 * For each event pin, find the corresponding event method (_Exx, _Lxx, or _EVT).
+	 * Configure and enable interrupts for this pin.
 	 */
-	for (pin = 0; pin < __arraycount(asc->sc_aei_res); pin++) {
-		if ((asc->sc_aei_pins & __BIT(pin)) == 0)
-			continue;
-
-		gpio = &asc->sc_aei_res[pin];
-
-		const char trig = gpio->Triggering == ACPI_LEVEL_SENSITIVE ? 'L' : 'E';
-		handle = NULL;
-		snprintf(namebuf, sizeof(namebuf), "_%c%02X", trig, pin);
-		if (ACPI_FAILURE(AcpiGetHandle(asc->sc_handle, namebuf, &handle))) {
-			(void)AcpiGetHandle(asc->sc_handle, "_EVT", &handle);
-			if (handle != NULL)
-				asc->sc_event[pin].ev_method_evt = true;
-		}
-
-		if (handle == NULL)
-			continue;
-
-		asc->sc_event[pin].ev_sc = asc;
-		asc->sc_event[pin].ev_pin = pin;
-		asc->sc_event[pin].ev_method = handle;
-
-		/*
-		 * Configure and enable interrupts for this pin.
-		 */
-
-		ibe = PLGPIO_READ(sc, PL061_GPIOIBE_REG);
-		iev = PLGPIO_READ(sc, PL061_GPIOIEV_REG);
-		switch (gpio->Polarity) {
-		case ACPI_ACTIVE_HIGH:
-			ibe &= ~__BIT(pin);
-			iev |= __BIT(pin);
-			break;
-		case ACPI_ACTIVE_LOW:
-			ibe &= ~__BIT(pin);
-			iev &= ~__BIT(pin);
-			break;
-		case ACPI_ACTIVE_BOTH:
-			ibe |= __BIT(pin);
-			break;
-		}
-		PLGPIO_WRITE(sc, PL061_GPIOIBE_REG, ibe);
-		PLGPIO_WRITE(sc, PL061_GPIOIEV_REG, iev);
-
-		is = PLGPIO_READ(sc, PL061_GPIOIS_REG);
-		switch (gpio->Triggering) {
-		case ACPI_LEVEL_SENSITIVE:
-			is |= __BIT(pin);
-			break;
-		case ACPI_EDGE_SENSITIVE:
-			is &= ~__BIT(pin);
-			break;
-		}
-		PLGPIO_WRITE(sc, PL061_GPIOIS_REG, is);
-
-		delay(20);
-
-		PLGPIO_WRITE(sc, PL061_GPIOIC_REG, __BIT(pin));
-
-		ie = PLGPIO_READ(sc, PL061_GPIOIE_REG);
-		ie |= __BIT(pin);
-		PLGPIO_WRITE(sc, PL061_GPIOIE_REG, ie);
-	}
-}
-
-static void
-plgpio_acpi_notify(void *priv)
-{
-	struct plgpio_acpi_event * const ev = priv;
-	struct plgpio_acpi_softc * const asc = ev->ev_sc;
-	struct plgpio_softc * const sc = &asc->sc_base;
-	ACPI_STATUS rv;
 
-	if (ev->ev_method_evt) {
-		ACPI_OBJECT_LIST objs;
-		ACPI_OBJECT obj[1];
-		objs.Count = 1;
-		objs.Pointer = obj;
-		obj[0].Type = ACPI_TYPE_INTEGER;
-		obj[0].Integer.Value = ev->ev_pin;
-		rv = AcpiEvaluateObject(ev->ev_method, NULL, &objs, NULL);
-	} else {
-		rv = AcpiEvaluateObject(ev->ev_method, NULL, NULL, NULL);
-	}
-
-	if (ACPI_FAILURE(rv))
-		device_printf(sc->sc_dev, "failed to handle %s event: %s\n",
-		    acpi_name(ev->ev_method), AcpiFormatException(rv));
+	ibe = PLGPIO_READ(sc, PL061_GPIOIBE_REG);
+	iev = PLGPIO_READ(sc, PL061_GPIOIEV_REG);
+	switch (gpio->Polarity) {
+	case ACPI_ACTIVE_HIGH:
+		ibe &= ~__BIT(pin);
+		iev |= __BIT(pin);
+		break;
+	case ACPI_ACTIVE_LOW:
+		ibe &= ~__BIT(pin);
+		iev &= ~__BIT(pin);
+		break;
+	case ACPI_ACTIVE_BOTH:
+		ibe |= __BIT(pin);
+		break;
+	}
+	PLGPIO_WRITE(sc, PL061_GPIOIBE_REG, ibe);
+	PLGPIO_WRITE(sc, PL061_GPIOIEV_REG, iev);
+
+	is = PLGPIO_READ(sc, PL061_GPIOIS_REG);
+	switch (gpio->Triggering) {
+	case ACPI_LEVEL_SENSITIVE:
+		is |= __BIT(pin);
+		break;
+	case ACPI_EDGE_SENSITIVE:
+		is &= ~__BIT(pin);
+		break;
+	}
+	PLGPIO_WRITE(sc, PL061_GPIOIS_REG, is);
+
+	delay(20);
+
+	PLGPIO_WRITE(sc, PL061_GPIOIC_REG, __BIT(pin));
+
+	ie = PLGPIO_READ(sc, PL061_GPIOIE_REG);
+	ie |= __BIT(pin);
+	PLGPIO_WRITE(sc, PL061_GPIOIE_REG, ie);
 }
 
 static int
@@ -302,11 +215,10 @@ plgpio_acpi_intr(void *priv)
 
 	while ((bit = __builtin_ffs(mis)) != 0) {
 		const int pin = bit - 1;
-		struct plgpio_acpi_event * const ev = &asc->sc_event[pin];
-
-		KASSERT(ev->ev_method != NULL);
+		struct acpi_event * const ev = asc->sc_event[pin];
+		KASSERT(ev != NULL);
 
-		AcpiOsExecute(OSL_NOTIFY_HANDLER, plgpio_acpi_notify, ev);
+		acpi_event_notify(ev);
 
 		mis &= ~__BIT(pin);
 	}

Added files:

Index: src/sys/dev/acpi/acpi_event.c
diff -u /dev/null src/sys/dev/acpi/acpi_event.c:1.1
--- /dev/null	Mon Oct 22 22:29:36 2018
+++ src/sys/dev/acpi/acpi_event.c	Mon Oct 22 22:29:35 2018
@@ -0,0 +1,181 @@
+/* $NetBSD: acpi_event.c,v 1.1 2018/10/22 22:29:35 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2018 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jared McNeill <jmcne...@invisible.ca>.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: acpi_event.c,v 1.1 2018/10/22 22:29:35 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/cpu.h>
+#include <sys/kmem.h>
+
+#include <dev/acpi/acpireg.h>
+#include <dev/acpi/acpivar.h>
+#include <dev/acpi/acpi_event.h>
+
+struct acpi_event {
+	device_t	ev_dev;
+	ACPI_HANDLE	ev_method;
+	bool		ev_method_evt;
+	UINT16		ev_data;
+};
+
+struct acpi_event_gpio_context {
+	device_t	ctx_dev;
+	ACPI_HANDLE	ctx_handle;
+	void		(*ctx_func)(void *, struct acpi_event *, ACPI_RESOURCE_GPIO *);
+	void		*ctx_arg;
+};
+
+static ACPI_STATUS
+acpi_event_create(device_t dev, ACPI_HANDLE handle, UINT16 data, UINT8 trig, struct acpi_event **pev)
+{
+	struct acpi_event *ev;
+	char namebuf[5];
+
+	const char trigchar = trig == ACPI_LEVEL_SENSITIVE ? 'L' : 'E';
+
+	ev = kmem_alloc(sizeof(*ev), KM_SLEEP);
+	ev->ev_dev = dev;
+	ev->ev_method = NULL;
+	ev->ev_method_evt = false;
+	ev->ev_data = data;
+
+	if (data <= 255) {
+		snprintf(namebuf, sizeof(namebuf), "_%c%02X", trigchar, data);
+		AcpiGetHandle(handle, namebuf, &ev->ev_method);
+	}
+	if (ev->ev_method == NULL && ACPI_SUCCESS(AcpiGetHandle(handle, "_EVT", &ev->ev_method)))
+		ev->ev_method_evt = true;
+
+	if (ev->ev_method == NULL) {
+		aprint_error_dev(dev, "%s is missing a control method for event %#x (trig %c)\n",
+		    acpi_name(handle), data, trigchar);
+		kmem_free(ev, sizeof(*ev));
+		return AE_NOT_FOUND;
+	}
+
+	*pev = ev;
+
+	return AE_OK;
+}
+
+static ACPI_STATUS
+acpi_event_gpio_resource_cb(ACPI_RESOURCE *res, void *priv)
+{
+	struct acpi_event_gpio_context *ctx = priv;
+	struct acpi_event *ev;
+	ACPI_RESOURCE_GPIO *gpio;
+	ACPI_STATUS rv;
+
+	if (res->Type != ACPI_RESOURCE_TYPE_GPIO)
+		return AE_OK;
+
+	gpio = &res->Data.Gpio;
+	if (gpio->ConnectionType != ACPI_RESOURCE_GPIO_TYPE_INT)
+		return AE_OK;
+	if (gpio->PinTableLength != 1)
+		return AE_OK;
+
+	rv = acpi_event_create(ctx->ctx_dev, ctx->ctx_handle, gpio->PinTable[0], gpio->Triggering, &ev);
+	if (ACPI_SUCCESS(rv))
+		ctx->ctx_func(ctx->ctx_arg, ev, gpio);
+
+	return AE_OK;
+}
+
+ACPI_STATUS
+acpi_event_create_gpio(device_t dev, ACPI_HANDLE handle,
+    void (*func)(void *, struct acpi_event *, ACPI_RESOURCE_GPIO *), void *arg)
+{
+	struct acpi_event_gpio_context ctx;
+
+	ctx.ctx_dev = dev;
+	ctx.ctx_handle = handle;
+	ctx.ctx_func = func;
+	ctx.ctx_arg = arg;
+
+	return AcpiWalkResources(handle, "_AEI", acpi_event_gpio_resource_cb, &ctx);
+}
+
+ACPI_STATUS
+acpi_event_create_int(device_t dev, ACPI_HANDLE handle,
+    void (*func)(void *, struct acpi_event *, struct acpi_irq *), void *arg)
+{
+	struct acpi_resources res;
+	struct acpi_event *ev;
+	struct acpi_irq *irq;
+	ACPI_STATUS rv;
+	int n;
+
+	rv = acpi_resource_parse(dev, handle, "_CRS", &res,
+            &acpi_resource_parse_ops_default);
+	if (ACPI_FAILURE(rv))
+		return rv;
+
+	for (n = 0; (irq = acpi_res_irq(&res, n)) != NULL; n++) {
+		rv = acpi_event_create(dev, handle, irq->ar_irq, irq->ar_type, &ev);
+		if (ACPI_SUCCESS(rv))
+			func(arg, ev, irq);
+	}
+
+	acpi_resource_cleanup(&res);
+
+	return AE_OK;
+}
+
+static void
+acpi_event_invoke(void *priv)
+{
+	struct acpi_event * const ev = priv;
+	ACPI_OBJECT_LIST objs, *arg = NULL;
+	ACPI_OBJECT obj[1];
+	ACPI_STATUS rv;
+
+	if (ev->ev_method_evt) {
+		objs.Count = 1;
+		objs.Pointer = obj;
+		obj[0].Type = ACPI_TYPE_INTEGER;
+		obj[0].Integer.Value = ev->ev_data;
+		arg = &objs;
+	}
+
+	rv = AcpiEvaluateObject(ev->ev_method, NULL, arg, NULL);
+	if (ACPI_FAILURE(rv))
+		device_printf(ev->ev_dev, "failed to handle %s event: %s\n",
+		    acpi_name(ev->ev_method), AcpiFormatException(rv));
+}
+
+ACPI_STATUS
+acpi_event_notify(struct acpi_event *ev)
+{
+	return AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_event_invoke, ev);
+}
Index: src/sys/dev/acpi/acpi_event.h
diff -u /dev/null src/sys/dev/acpi/acpi_event.h:1.1
--- /dev/null	Mon Oct 22 22:29:36 2018
+++ src/sys/dev/acpi/acpi_event.h	Mon Oct 22 22:29:35 2018
@@ -0,0 +1,43 @@
+/* $NetBSD: acpi_event.h,v 1.1 2018/10/22 22:29:35 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2018 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jared McNeill <jmcne...@invisible.ca>.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _DEV_ACPI_ACPI_EVENT_H
+#define _DEV_ACPI_ACPI_EVENT_H
+
+struct acpi_event;
+
+ACPI_STATUS	acpi_event_create_gpio(device_t, ACPI_HANDLE,
+		    void (*)(void *, struct acpi_event *, ACPI_RESOURCE_GPIO *), void *);
+ACPI_STATUS	acpi_event_create_int(device_t, ACPI_HANDLE,
+		    void (*)(void *, struct acpi_event *, struct acpi_irq *), void *);
+ACPI_STATUS	acpi_event_notify(struct acpi_event *);
+
+#endif /* !_DEV_ACPI_ACPI_EVENT_H */

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