Initial FreeBSD OSPM (operating system power management) modules for

ACPICA.  Most of these are still works in progress.  Support exists for:

 - Fixed feature and control method power, lid and sleep buttons.
 - Detection of ISA PnP devices using ACPI namespace.
 - Detection of PCI root busses using ACPI namespace.
 - CPU throttling and sleep states (incomplete)
 - Thermal monitoring and cooling control (incomplete)
 - Interface to platform embedded controllers (mostly complete)
 - ACPI timer (incomplete)
 - Simple userland control of sleep states.
 - Shutdown and poweroff.

1 files changed, 182 insertions, 0 deletions

diff --git a/sys/dev/acpica/acpi_button.c b/sys/dev/acpica/acpi_button.c
new file mode 100644
index 0000000..cc6b4c2
--- /dev/null
+++ b/sys/dev/acpica/acpi_button.c
@@ -0,0 +1,182 @@
+/*-
+ * Copyright (c) 2000 Mitsaru IWASAKI <iwasaki@jp.freebsd.org>
+ * Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
+ * Copyright (c) 2000 BSDi
+ * All rights reserved.
+ *
+ * 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 AUTHOR 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 AUTHOR 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.
+ *
+ *	$FreeBSD$
+ */
+
+#include "opt_acpi.h"
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+
+#include "acpi.h"
+
+#include <dev/acpica/acpivar.h>
+
+struct acpi_button_softc {
+    device_t	button_dev;
+    ACPI_HANDLE	button_handle;
+#define ACPI_POWER_BUTTON	0
+#define ACPI_SLEEP_BUTTON	1
+    boolean_t	button_type;	/* Power or Sleep Button */
+};
+
+static int	acpi_button_probe(device_t dev);
+static int	acpi_button_attach(device_t dev);
+static void 	acpi_button_notify_handler(ACPI_HANDLE h,UINT32 notify, void *context);
+static void	acpi_button_notify_pressed_for_sleep(void *arg);
+static void	acpi_button_notify_pressed_for_wakeup(void *arg);
+
+static device_method_t acpi_button_methods[] = {
+    /* Device interface */
+    DEVMETHOD(device_probe,	acpi_button_probe),
+    DEVMETHOD(device_attach,	acpi_button_attach),
+
+    {0, 0}
+};
+
+static driver_t acpi_button_driver = {
+    "acpi_button",
+    acpi_button_methods,
+    sizeof(struct acpi_button_softc),
+};
+
+devclass_t acpi_button_devclass;
+DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, acpi_button_devclass, 0, 0);
+
+static int
+acpi_button_probe(device_t dev)
+{
+    struct acpi_button_softc	*sc;
+
+    sc = device_get_softc(dev);
+    if (acpi_get_type(dev) == ACPI_TYPE_DEVICE) {
+	if (acpi_MatchHid(dev, "PNP0C0C")) {
+	    device_set_desc(dev, "Control Method Power Button Device");
+	    sc->button_type = ACPI_POWER_BUTTON;
+	    return(0);
+	}
+	if (acpi_MatchHid(dev, "PNP0C0E")) {
+	    device_set_desc(dev, "Control Method Sleep Button Device");
+	    sc->button_type = ACPI_SLEEP_BUTTON;
+	    return(0);
+	}
+	return(ENXIO);
+    }
+    return(ENXIO);
+}
+
+static int
+acpi_button_attach(device_t dev)
+{
+    struct acpi_button_softc	*sc;
+    ACPI_STATUS			status;
+
+    sc = device_get_softc(dev);
+    sc->button_dev = dev;
+    sc->button_handle = acpi_get_handle(dev);
+
+    if ((status = AcpiInstallNotifyHandler(sc->button_handle, ACPI_DEVICE_NOTIFY, 
+					   acpi_button_notify_handler, sc)) != AE_OK) {
+	device_printf(sc->button_dev, "couldn't install Notify handler - %s\n", acpi_strerror(status));
+	return(ENXIO);
+    }
+    return(0);
+}
+
+static void
+acpi_button_notify_pressed_for_sleep(void *arg)
+{
+    struct acpi_button_softc	*sc;
+    struct acpi_softc		*acpi_sc;
+
+    sc = (struct acpi_button_softc *)arg;
+    acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
+    if (acpi_sc == NULL) {
+	return;
+    }
+
+    switch (sc->button_type) {
+    case ACPI_POWER_BUTTON:
+	acpi_eventhandler_power_button_for_sleep((void *)acpi_sc);
+	break;
+    case ACPI_SLEEP_BUTTON:
+	acpi_eventhandler_sleep_button_for_sleep((void *)acpi_sc);
+	break;
+    default:
+	return;		/* unknown button type */
+    }
+}
+
+static void
+acpi_button_notify_pressed_for_wakeup(void *arg)
+{
+    struct acpi_button_softc	*sc;
+    struct acpi_softc		*acpi_sc;
+
+    sc = (struct acpi_button_softc *)arg;
+    acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
+    if (acpi_sc == NULL) {
+	return;
+    }
+
+    switch (sc->button_type) {
+    case ACPI_POWER_BUTTON:
+	acpi_eventhandler_power_button_for_wakeup((void *)acpi_sc);
+	break;
+    case ACPI_SLEEP_BUTTON:
+	acpi_eventhandler_sleep_button_for_wakeup((void *)acpi_sc);
+	break;
+    default:
+	return;		/* unknown button type */
+    }
+}
+
+/* XXX maybe not here */
+#define ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP	0x80
+#define ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP	0x02
+
+static void 
+acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
+{
+    struct acpi_button_softc	*sc = (struct acpi_button_softc *)context;
+
+    switch (notify) {
+    case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP:
+	AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_sleep, sc);
+	device_printf(sc->button_dev, "pressed for sleep, button type: %d\n", sc->button_type);
+	break;   
+    case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP:
+	AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_wakeup, sc);
+	device_printf(sc->button_dev, "pressed for wakeup, button type: %d\n", sc->button_type);
+	break;   
+    default:
+	return;		/* unknown notification value */
+    }
+}
+
+