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-rw-r--r--sys/dev/acpica/acpi.c2129
1 files changed, 2129 insertions, 0 deletions
diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c
new file mode 100644
index 0000000..2a6ca65
--- /dev/null
+++ b/sys/dev/acpica/acpi.c
@@ -0,0 +1,2129 @@
+/*-
+ * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
+ * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
+ * Copyright (c) 2000, 2001 Michael Smith
+ * 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/proc.h>
+#include <sys/malloc.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/ioccom.h>
+#include <sys/reboot.h>
+#include <sys/sysctl.h>
+#include <sys/ctype.h>
+#include <sys/linker.h>
+#include <sys/power.h>
+
+#include <machine/clock.h>
+#include <machine/resource.h>
+
+#include <isa/isavar.h>
+
+#include "acpi.h"
+
+#include <dev/acpica/acpica_support.h>
+
+#include <dev/acpica/acpivar.h>
+#include <dev/acpica/acpiio.h>
+
+MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
+
+/*
+ * Hooks for the ACPI CA debugging infrastructure
+ */
+#define _COMPONENT ACPI_BUS
+ACPI_MODULE_NAME("ACPI")
+
+/*
+ * Character device
+ */
+
+static d_open_t acpiopen;
+static d_close_t acpiclose;
+static d_ioctl_t acpiioctl;
+
+#define CDEV_MAJOR 152
+static struct cdevsw acpi_cdevsw = {
+ acpiopen,
+ acpiclose,
+ noread,
+ nowrite,
+ acpiioctl,
+ nopoll,
+ nommap,
+ nostrategy,
+ "acpi",
+ CDEV_MAJOR,
+ nodump,
+ nopsize,
+ 0
+};
+
+static const char* sleep_state_names[] = {
+ "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
+
+/* this has to be static, as the softc is gone when we need it */
+static int acpi_off_state = ACPI_STATE_S5;
+
+#if __FreeBSD_version >= 500000
+struct mtx acpi_mutex;
+#endif
+
+static int acpi_modevent(struct module *mod, int event, void *junk);
+static void acpi_identify(driver_t *driver, device_t parent);
+static int acpi_probe(device_t dev);
+static int acpi_attach(device_t dev);
+static device_t acpi_add_child(device_t bus, int order, const char *name, int unit);
+static int acpi_print_child(device_t bus, device_t child);
+static int acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result);
+static int acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value);
+static int acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start,
+ u_long count);
+static int acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp,
+ u_long *countp);
+static struct resource *acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
+ u_long start, u_long end, u_long count, u_int flags);
+static int acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r);
+static u_int32_t acpi_isa_get_logicalid(device_t dev);
+static int acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids);
+
+static void acpi_probe_children(device_t bus);
+static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status);
+
+static void acpi_shutdown_pre_sync(void *arg, int howto);
+static void acpi_shutdown_final(void *arg, int howto);
+
+static void acpi_enable_fixed_events(struct acpi_softc *sc);
+
+static void acpi_system_eventhandler_sleep(void *arg, int state);
+static void acpi_system_eventhandler_wakeup(void *arg, int state);
+static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
+
+static int acpi_pm_func(u_long cmd, void *arg, ...);
+
+static device_method_t acpi_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_identify, acpi_identify),
+ DEVMETHOD(device_probe, acpi_probe),
+ DEVMETHOD(device_attach, acpi_attach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+
+ /* Bus interface */
+ DEVMETHOD(bus_add_child, acpi_add_child),
+ DEVMETHOD(bus_print_child, acpi_print_child),
+ DEVMETHOD(bus_read_ivar, acpi_read_ivar),
+ DEVMETHOD(bus_write_ivar, acpi_write_ivar),
+ DEVMETHOD(bus_set_resource, acpi_set_resource),
+ DEVMETHOD(bus_get_resource, acpi_get_resource),
+ DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
+ DEVMETHOD(bus_release_resource, acpi_release_resource),
+ DEVMETHOD(bus_driver_added, bus_generic_driver_added),
+ DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+ DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+ DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
+ DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
+
+ /* ISA emulation */
+ DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
+
+ {0, 0}
+};
+
+static driver_t acpi_driver = {
+ "acpi",
+ acpi_methods,
+ sizeof(struct acpi_softc),
+};
+
+static devclass_t acpi_devclass;
+DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
+MODULE_VERSION(acpi, 100);
+
+SYSCTL_INT(_debug, OID_AUTO, acpi_debug_layer, CTLFLAG_RW, &AcpiDbgLayer, 0, "");
+SYSCTL_INT(_debug, OID_AUTO, acpi_debug_level, CTLFLAG_RW, &AcpiDbgLevel, 0, "");
+static int acpi_ca_version = ACPI_CA_VERSION;
+SYSCTL_INT(_debug, OID_AUTO, acpi_ca_version, CTLFLAG_RD, &acpi_ca_version, 0, "");
+
+/*
+ * ACPI can only be loaded as a module by the loader; activating it after
+ * system bootstrap time is not useful, and can be fatal to the system.
+ * It also cannot be unloaded, since the entire system bus heirarchy hangs off it.
+ */
+static int
+acpi_modevent(struct module *mod, int event, void *junk)
+{
+ switch(event) {
+ case MOD_LOAD:
+ if (!cold) {
+ printf("The ACPI driver cannot be loaded after boot.\n");
+ return(EPERM);
+ }
+ break;
+ case MOD_UNLOAD:
+ if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
+ return(EBUSY);
+ break;
+ default:
+ break;
+ }
+ return(0);
+}
+
+/*
+ * Detect ACPI, perform early initialisation
+ */
+static void
+acpi_identify(driver_t *driver, device_t parent)
+{
+ device_t child;
+ int error;
+#ifdef ACPI_DEBUGGER
+ char *debugpoint;
+#endif
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ if (!cold)
+ return_VOID;
+
+ /*
+ * Check that we haven't been disabled with a hint.
+ */
+ if (!resource_int_value("acpi", 0, "disabled", &error) &&
+ (error != 0))
+ return_VOID;
+
+ /*
+ * Make sure we're not being doubly invoked.
+ */
+ if (device_find_child(parent, "acpi", 0) != NULL)
+ return_VOID;
+
+#if __FreeBSD_version >= 500000
+ /* initialise the ACPI mutex */
+ mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
+#endif
+
+ /*
+ * Start up the ACPI CA subsystem.
+ */
+#ifdef ACPI_DEBUGGER
+ debugpoint = getenv("debug.acpi.debugger");
+ if (debugpoint) {
+ if (!strcmp(debugpoint, "init"))
+ acpi_EnterDebugger();
+ freeenv(debugpoint);
+ }
+#endif
+ if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) {
+ printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error));
+ return_VOID;
+ }
+#ifdef ACPI_DEBUGGER
+ debugpoint = getenv("debug.acpi.debugger");
+ if (debugpoint) {
+ if (!strcmp(debugpoint, "tables"))
+ acpi_EnterDebugger();
+ freeenv(debugpoint);
+ }
+#endif
+
+ if (ACPI_FAILURE(error = AcpiLoadTables())) {
+ printf("ACPI: table load failed: %s\n", AcpiFormatException(error));
+ return_VOID;
+ }
+
+ /*
+ * Attach the actual ACPI device.
+ */
+ if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) {
+ device_printf(parent, "ACPI: could not attach\n");
+ return_VOID;
+ }
+}
+
+/*
+ * Fetch some descriptive data from ACPI to put in our attach message
+ */
+static int
+acpi_probe(device_t dev)
+{
+ ACPI_TABLE_HEADER th;
+ char buf[20];
+ ACPI_STATUS status;
+ int error;
+ ACPI_LOCK_DECL;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
+ power_pm_get_type() != POWER_PM_TYPE_ACPI) {
+ device_printf(dev, "Other PM system enabled.\n");
+ return_VALUE(ENXIO);
+ }
+
+ ACPI_LOCK;
+
+ if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) {
+ device_printf(dev, "couldn't get XSDT header: %s\n", AcpiFormatException(status));
+ error = ENXIO;
+ } else {
+ sprintf(buf, "%.6s %.8s", th.OemId, th.OemTableId);
+ device_set_desc_copy(dev, buf);
+ error = 0;
+ }
+ ACPI_UNLOCK;
+ return_VALUE(error);
+}
+
+static int
+acpi_attach(device_t dev)
+{
+ struct acpi_softc *sc;
+ ACPI_STATUS status;
+ int error;
+ UINT32 flags;
+ char *env;
+#ifdef ACPI_DEBUGGER
+ char *debugpoint;
+#endif
+ ACPI_LOCK_DECL;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ ACPI_LOCK;
+ sc = device_get_softc(dev);
+ bzero(sc, sizeof(*sc));
+ sc->acpi_dev = dev;
+
+#ifdef ACPI_DEBUGGER
+ debugpoint = getenv("debug.acpi.debugger");
+ if (debugpoint) {
+ if (!strcmp(debugpoint, "spaces"))
+ acpi_EnterDebugger();
+ freeenv(debugpoint);
+ }
+#endif
+
+ /*
+ * Install the default address space handlers.
+ */
+ error = ENXIO;
+ if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
+ ACPI_ADR_SPACE_SYSTEM_MEMORY,
+ ACPI_DEFAULT_HANDLER,
+ NULL, NULL))) {
+ device_printf(dev, "could not initialise SystemMemory handler: %s\n", AcpiFormatException(status));
+ goto out;
+ }
+ if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
+ ACPI_ADR_SPACE_SYSTEM_IO,
+ ACPI_DEFAULT_HANDLER,
+ NULL, NULL))) {
+ device_printf(dev, "could not initialise SystemIO handler: %s\n", AcpiFormatException(status));
+ goto out;
+ }
+ if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
+ ACPI_ADR_SPACE_PCI_CONFIG,
+ ACPI_DEFAULT_HANDLER,
+ NULL, NULL))) {
+ device_printf(dev, "could not initialise PciConfig handler: %s\n", AcpiFormatException(status));
+ goto out;
+ }
+
+ /*
+ * Bring ACPI fully online.
+ *
+ * Note that some systems (specifically, those with namespace evaluation issues
+ * that require the avoidance of parts of the namespace) must avoid running _INI
+ * and _STA on everything, as well as dodging the final object init pass.
+ *
+ * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
+ *
+ * XXX We should arrange for the object init pass after we have attached all our
+ * child devices, but on many systems it works here.
+ */
+#ifdef ACPI_DEBUGGER
+ debugpoint = getenv("debug.acpi.debugger");
+ if (debugpoint) {
+ if (!strcmp(debugpoint, "enable"))
+ acpi_EnterDebugger();
+ freeenv(debugpoint);
+ }
+#endif
+ flags = 0;
+ if (testenv("debug.acpi.avoid"))
+ flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
+ if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
+ device_printf(dev, "could not enable ACPI: %s\n", AcpiFormatException(status));
+ goto out;
+ }
+
+ if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
+ device_printf(dev, "could not initialize ACPI objects: %s\n", AcpiFormatException(status));
+ goto out;
+ }
+
+ /*
+ * Setup our sysctl tree.
+ *
+ * XXX: This doesn't check to make sure that none of these fail.
+ */
+ sysctl_ctx_init(&sc->acpi_sysctl_ctx);
+ sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
+ SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
+ device_get_name(dev), CTLFLAG_RD, 0, "");
+ SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
+ &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
+ SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
+ &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
+ SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
+ &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
+ SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
+ &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
+ SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
+ &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
+ SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW,
+ &sc->acpi_sleep_delay, 0, "sleep delay");
+ SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW,
+ &sc->acpi_s4bios, 0, "S4BIOS mode");
+ SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW,
+ &sc->acpi_verbose, 0, "verbose mode");
+ sc->acpi_sleep_delay = 0;
+ sc->acpi_s4bios = 1;
+ if (bootverbose)
+ sc->acpi_verbose = 1;
+ if ((env = getenv("hw.acpi.verbose")) && strcmp(env, "0")) {
+ sc->acpi_verbose = 1;
+ freeenv(env);
+ }
+
+ /*
+ * Dispatch the default sleep state to devices.
+ * TBD: should be configured from userland policy manager.
+ */
+ sc->acpi_power_button_sx = ACPI_POWER_BUTTON_DEFAULT_SX;
+ sc->acpi_sleep_button_sx = ACPI_SLEEP_BUTTON_DEFAULT_SX;
+ sc->acpi_lid_switch_sx = ACPI_LID_SWITCH_DEFAULT_SX;
+ sc->acpi_standby_sx = ACPI_STATE_S1;
+ sc->acpi_suspend_sx = ACPI_STATE_S3;
+
+ acpi_enable_fixed_events(sc);
+
+ /*
+ * Scan the namespace and attach/initialise children.
+ */
+#ifdef ACPI_DEBUGGER
+ debugpoint = getenv("debug.acpi.debugger");
+ if (debugpoint) {
+ if (!strcmp(debugpoint, "probe"))
+ acpi_EnterDebugger();
+ freeenv(debugpoint);
+ }
+#endif
+
+ /*
+ * Register our shutdown handlers
+ */
+ EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc, SHUTDOWN_PRI_LAST);
+ EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, SHUTDOWN_PRI_LAST);
+
+ /*
+ * Register our acpi event handlers.
+ * XXX should be configurable eg. via userland policy manager.
+ */
+ EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, sc, ACPI_EVENT_PRI_LAST);
+ EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, sc, ACPI_EVENT_PRI_LAST);
+
+ /*
+ * Flag our initial states.
+ */
+ sc->acpi_enabled = 1;
+ sc->acpi_sstate = ACPI_STATE_S0;
+ sc->acpi_sleep_disabled = 0;
+
+ /*
+ * Create the control device
+ */
+ sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, 0, 5, 0660, "acpi");
+ sc->acpi_dev_t->si_drv1 = sc;
+
+#ifdef ACPI_DEBUGGER
+ debugpoint = getenv("debug.acpi.debugger");
+ if (debugpoint) {
+ if (!strcmp(debugpoint, "running"))
+ acpi_EnterDebugger();
+ freeenv(debugpoint);
+ }
+#endif
+
+#ifdef ACPI_USE_THREADS
+ if ((error = acpi_task_thread_init())) {
+ goto out;
+ }
+#endif
+
+ if ((error = acpi_machdep_init(dev))) {
+ goto out;
+ }
+
+ /* Register ACPI again to pass the correct argument of pm_func. */
+ power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
+
+ if (!acpi_disabled("bus"))
+ acpi_probe_children(dev);
+
+ error = 0;
+
+ out:
+ ACPI_UNLOCK;
+ return_VALUE(error);
+}
+
+/*
+ * Handle a new device being added
+ */
+static device_t
+acpi_add_child(device_t bus, int order, const char *name, int unit)
+{
+ struct acpi_device *ad;
+ device_t child;
+
+ if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT)) == NULL)
+ return(NULL);
+ bzero(ad, sizeof(*ad));
+
+ resource_list_init(&ad->ad_rl);
+
+ child = device_add_child_ordered(bus, order, name, unit);
+ if (child != NULL)
+ device_set_ivars(child, ad);
+ return(child);
+}
+
+static int
+acpi_print_child(device_t bus, device_t child)
+{
+ struct acpi_device *adev = device_get_ivars(child);
+ struct resource_list *rl = &adev->ad_rl;
+ int retval = 0;
+
+ retval += bus_print_child_header(bus, child);
+ retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
+ retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
+ retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
+ retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
+ retval += bus_print_child_footer(bus, child);
+
+ return(retval);
+}
+
+
+/*
+ * Handle per-device ivars
+ */
+static int
+acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
+{
+ struct acpi_device *ad;
+
+ if ((ad = device_get_ivars(child)) == NULL) {
+ printf("device has no ivars\n");
+ return(ENOENT);
+ }
+
+ switch(index) {
+ /* ACPI ivars */
+ case ACPI_IVAR_HANDLE:
+ *(ACPI_HANDLE *)result = ad->ad_handle;
+ break;
+ case ACPI_IVAR_MAGIC:
+ *(int *)result = ad->ad_magic;
+ break;
+ case ACPI_IVAR_PRIVATE:
+ *(void **)result = ad->ad_private;
+ break;
+
+ /* ISA compatibility */
+ case ISA_IVAR_VENDORID:
+ case ISA_IVAR_SERIAL:
+ case ISA_IVAR_COMPATID:
+ *(int *)result = -1;
+ break;
+
+ case ISA_IVAR_LOGICALID:
+ *(int *)result = acpi_isa_get_logicalid(child);
+ break;
+
+ default:
+ return(ENOENT);
+ }
+ return(0);
+}
+
+static int
+acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
+{
+ struct acpi_device *ad;
+
+ if ((ad = device_get_ivars(child)) == NULL) {
+ printf("device has no ivars\n");
+ return(ENOENT);
+ }
+
+ switch(index) {
+ /* ACPI ivars */
+ case ACPI_IVAR_HANDLE:
+ ad->ad_handle = (ACPI_HANDLE)value;
+ break;
+ case ACPI_IVAR_MAGIC:
+ ad->ad_magic = (int )value;
+ break;
+ case ACPI_IVAR_PRIVATE:
+ ad->ad_private = (void *)value;
+ break;
+
+ default:
+ panic("bad ivar write request (%d)", index);
+ return(ENOENT);
+ }
+ return(0);
+}
+
+/*
+ * Handle child resource allocation/removal
+ */
+static int
+acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count)
+{
+ struct acpi_device *ad = device_get_ivars(child);
+ struct resource_list *rl = &ad->ad_rl;
+
+ resource_list_add(rl, type, rid, start, start + count -1, count);
+
+ return(0);
+}
+
+static int
+acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp)
+{
+ struct acpi_device *ad = device_get_ivars(child);
+ struct resource_list *rl = &ad->ad_rl;
+ struct resource_list_entry *rle;
+
+ rle = resource_list_find(rl, type, rid);
+ if (!rle)
+ return(ENOENT);
+
+ if (startp)
+ *startp = rle->start;
+ if (countp)
+ *countp = rle->count;
+
+ return(0);
+}
+
+static struct resource *
+acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
+ u_long start, u_long end, u_long count, u_int flags)
+{
+ struct acpi_device *ad = device_get_ivars(child);
+ struct resource_list *rl = &ad->ad_rl;
+
+ return(resource_list_alloc(rl, bus, child, type, rid, start, end, count, flags));
+}
+
+static int
+acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r)
+{
+ struct acpi_device *ad = device_get_ivars(child);
+ struct resource_list *rl = &ad->ad_rl;
+
+ return(resource_list_release(rl, bus, child, type, rid, r));
+}
+
+/*
+ * Handle ISA-like devices probing for a PnP ID to match.
+ */
+#define PNP_EISAID(s) \
+ ((((s[0] - '@') & 0x1f) << 2) \
+ | (((s[1] - '@') & 0x18) >> 3) \
+ | (((s[1] - '@') & 0x07) << 13) \
+ | (((s[2] - '@') & 0x1f) << 8) \
+ | (PNP_HEXTONUM(s[4]) << 16) \
+ | (PNP_HEXTONUM(s[3]) << 20) \
+ | (PNP_HEXTONUM(s[6]) << 24) \
+ | (PNP_HEXTONUM(s[5]) << 28))
+
+static u_int32_t
+acpi_isa_get_logicalid(device_t dev)
+{
+ ACPI_HANDLE h;
+ ACPI_DEVICE_INFO devinfo;
+ ACPI_STATUS error;
+ u_int32_t pnpid;
+ ACPI_LOCK_DECL;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ pnpid = 0;
+ ACPI_LOCK;
+
+ /* fetch and validate the HID */
+ if ((h = acpi_get_handle(dev)) == NULL)
+ goto out;
+ if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo)))
+ goto out;
+ if (!(devinfo.Valid & ACPI_VALID_HID))
+ goto out;
+
+ pnpid = PNP_EISAID(devinfo.HardwareId);
+out:
+ ACPI_UNLOCK;
+ return_VALUE(pnpid);
+}
+
+static int
+acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
+{
+ int result;
+ u_int32_t pnpid;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ /*
+ * ISA-style drivers attached to ACPI may persist and
+ * probe manually if we return ENOENT. We never want
+ * that to happen, so don't ever return it.
+ */
+ result = ENXIO;
+
+ /* scan the supplied IDs for a match */
+ pnpid = acpi_isa_get_logicalid(child);
+ while (ids && ids->ip_id) {
+ if (pnpid == ids->ip_id) {
+ result = 0;
+ goto out;
+ }
+ ids++;
+ }
+ out:
+ return_VALUE(result);
+}
+
+/*
+ * Scan relevant portions of the ACPI namespace and attach child devices.
+ *
+ * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and \_SB_ scopes,
+ * and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec.
+ */
+static void
+acpi_probe_children(device_t bus)
+{
+ ACPI_HANDLE parent;
+ static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL};
+ int i;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ ACPI_ASSERTLOCK;
+
+ /*
+ * Create any static children by calling device identify methods.
+ */
+ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
+ bus_generic_probe(bus);
+
+ /*
+ * Scan the namespace and insert placeholders for all the devices that
+ * we find.
+ *
+ * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
+ * we want to create nodes for all devices, not just those that are currently
+ * present. (This assumes that we don't want to create/remove devices as they
+ * appear, which might be smarter.)
+ */
+ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
+ for (i = 0; scopes[i] != NULL; i++)
+ if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent)))
+ AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child, bus, NULL);
+
+ /*
+ * Scan all of the child devices we have created and let them probe/attach.
+ */
+ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
+ bus_generic_attach(bus);
+
+ /*
+ * Some of these children may have attached others as part of their attach
+ * process (eg. the root PCI bus driver), so rescan.
+ */
+ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
+ bus_generic_attach(bus);
+
+ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
+ return_VOID;
+}
+
+/*
+ * Evaluate a child device and determine whether we might attach a device to
+ * it.
+ */
+static ACPI_STATUS
+acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
+{
+ ACPI_OBJECT_TYPE type;
+ device_t child, bus = (device_t)context;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ /*
+ * Skip this device if we think we'll have trouble with it.
+ */
+ if (acpi_avoid(handle))
+ return_ACPI_STATUS(AE_OK);
+
+ if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
+ switch(type) {
+ case ACPI_TYPE_DEVICE:
+ case ACPI_TYPE_PROCESSOR:
+ case ACPI_TYPE_THERMAL:
+ case ACPI_TYPE_POWER:
+ if (acpi_disabled("children"))
+ break;
+ /*
+ * Create a placeholder device for this node. Sort the placeholder
+ * so that the probe/attach passes will run breadth-first.
+ */
+ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", acpi_name(handle)));
+ child = BUS_ADD_CHILD(bus, level * 10, NULL, -1);
+ if (child == NULL)
+ break;
+ acpi_set_handle(child, handle);
+
+ /*
+ * Check that the device is present. If it's not present,
+ * leave it disabled (so that we have a device_t attached to
+ * the handle, but we don't probe it).
+ */
+ if ((type == ACPI_TYPE_DEVICE) && (!acpi_DeviceIsPresent(child))) {
+ device_disable(child);
+ break;
+ }
+
+ /*
+ * Get the device's resource settings and attach them.
+ * Note that if the device has _PRS but no _CRS, we need
+ * to decide when it's appropriate to try to configure the
+ * device. Ignore the return value here; it's OK for the
+ * device not to have any resources.
+ */
+ acpi_parse_resources(child, handle, &acpi_res_parse_set);
+
+ /* if we're debugging, probe/attach now rather than later */
+ ACPI_DEBUG_EXEC(device_probe_and_attach(child));
+ break;
+ }
+ }
+ return_ACPI_STATUS(AE_OK);
+}
+
+static void
+acpi_shutdown_pre_sync(void *arg, int howto)
+{
+
+ ACPI_ASSERTLOCK;
+
+ /*
+ * Disable all ACPI events before soft off, otherwise the system
+ * will be turned on again on some laptops.
+ *
+ * XXX this should probably be restricted to masking some events just
+ * before powering down, since we may still need ACPI during the
+ * shutdown process.
+ */
+ acpi_Disable((struct acpi_softc *)arg);
+}
+
+static void
+acpi_shutdown_final(void *arg, int howto)
+{
+ ACPI_STATUS status;
+
+ ACPI_ASSERTLOCK;
+
+ if (howto & RB_POWEROFF) {
+ printf("Power system off using ACPI...\n");
+ if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(acpi_off_state))) {
+ printf("AcpiEnterSleepStatePrep failed - %s\n",
+ AcpiFormatException(status));
+ return;
+ }
+ if (ACPI_FAILURE(status = AcpiEnterSleepState(acpi_off_state))) {
+ printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
+ } else {
+ DELAY(1000000);
+ printf("ACPI power-off failed - timeout\n");
+ }
+ } else {
+ printf("Terminate ACPI\n");
+ AcpiTerminate();
+ }
+}
+
+static void
+acpi_enable_fixed_events(struct acpi_softc *sc)
+{
+ static int first_time = 1;
+#define MSGFORMAT "%s button is handled as a fixed feature programming model.\n"
+
+ ACPI_ASSERTLOCK;
+
+ /* Enable and clear fixed events and install handlers. */
+ if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->PwrButton == 0)) {
+ AcpiEnableEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED, 0);
+ AcpiClearEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED);
+ AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
+ acpi_eventhandler_power_button_for_sleep, sc);
+ if (first_time) {
+ device_printf(sc->acpi_dev, MSGFORMAT, "power");
+ }
+ }
+ if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->SleepButton == 0)) {
+ AcpiEnableEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED, 0);
+ AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED);
+ AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
+ acpi_eventhandler_sleep_button_for_sleep, sc);
+ if (first_time) {
+ device_printf(sc->acpi_dev, MSGFORMAT, "sleep");
+ }
+ }
+
+ first_time = 0;
+}
+
+/*
+ * Returns true if the device is actually present and should
+ * be attached to. This requires the present, enabled, UI-visible
+ * and diagnostics-passed bits to be set.
+ */
+BOOLEAN
+acpi_DeviceIsPresent(device_t dev)
+{
+ ACPI_HANDLE h;
+ ACPI_DEVICE_INFO devinfo;
+ ACPI_STATUS error;
+
+ ACPI_ASSERTLOCK;
+
+ if ((h = acpi_get_handle(dev)) == NULL)
+ return(FALSE);
+ if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo)))
+ return(FALSE);
+ /* if no _STA method, must be present */
+ if (!(devinfo.Valid & ACPI_VALID_STA))
+ return(TRUE);
+ /* return true for 'present' and 'functioning' */
+ if ((devinfo.CurrentStatus & 0x9) == 0x9)
+ return(TRUE);
+ return(FALSE);
+}
+
+/*
+ * Returns true if the battery is actually present and inserted.
+ */
+BOOLEAN
+acpi_BatteryIsPresent(device_t dev)
+{
+ ACPI_HANDLE h;
+ ACPI_DEVICE_INFO devinfo;
+ ACPI_STATUS error;
+
+ ACPI_ASSERTLOCK;
+
+ if ((h = acpi_get_handle(dev)) == NULL)
+ return(FALSE);
+ if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo)))
+ return(FALSE);
+ /* if no _STA method, must be present */
+ if (!(devinfo.Valid & ACPI_VALID_STA))
+ return(TRUE);
+ /* return true for 'present' and 'functioning' */
+ if ((devinfo.CurrentStatus & 0x19) == 0x19)
+ return(TRUE);
+ return(FALSE);
+}
+
+/*
+ * Match a HID string against a device
+ */
+BOOLEAN
+acpi_MatchHid(device_t dev, char *hid)
+{
+ ACPI_HANDLE h;
+ ACPI_DEVICE_INFO devinfo;
+ ACPI_STATUS error;
+ int cid;
+
+ ACPI_ASSERTLOCK;
+
+ if (hid == NULL)
+ return(FALSE);
+ if ((h = acpi_get_handle(dev)) == NULL)
+ return(FALSE);
+ if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo)))
+ return(FALSE);
+ if ((devinfo.Valid & ACPI_VALID_HID) && !strcmp(hid, devinfo.HardwareId))
+ return(TRUE);
+ if (ACPI_FAILURE(error = acpi_EvaluateInteger(h, "_CID", &cid)))
+ return(FALSE);
+ if (cid == PNP_EISAID(hid))
+ return(TRUE);
+ return(FALSE);
+}
+
+/*
+ * Return the handle of a named object within our scope, ie. that of (parent)
+ * or one if its parents.
+ */
+ACPI_STATUS
+acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
+{
+ ACPI_HANDLE r;
+ ACPI_STATUS status;
+
+ ACPI_ASSERTLOCK;
+
+ /* walk back up the tree to the root */
+ for (;;) {
+ if (ACPI_SUCCESS(status = AcpiGetHandle(parent, path, &r))) {
+ *result = r;
+ return(AE_OK);
+ }
+ if (status != AE_NOT_FOUND)
+ return(AE_OK);
+ if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
+ return(AE_NOT_FOUND);
+ parent = r;
+ }
+}
+
+/*
+ * Allocate a buffer with a preset data size.
+ */
+ACPI_BUFFER *
+acpi_AllocBuffer(int size)
+{
+ ACPI_BUFFER *buf;
+
+ if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
+ return(NULL);
+ buf->Length = size;
+ buf->Pointer = (void *)(buf + 1);
+ return(buf);
+}
+
+/*
+ * Evaluate a path that should return an integer.
+ */
+ACPI_STATUS
+acpi_EvaluateInteger(ACPI_HANDLE handle, char *path, int *number)
+{
+ ACPI_STATUS error;
+ ACPI_BUFFER buf;
+ ACPI_OBJECT param;
+
+ ACPI_ASSERTLOCK;
+
+ if (handle == NULL)
+ handle = ACPI_ROOT_OBJECT;
+
+ /*
+ * Assume that what we've been pointed at is an Integer object, or
+ * a method that will return an Integer.
+ */
+ buf.Pointer = &param;
+ buf.Length = sizeof(param);
+ if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) {
+ if (param.Type == ACPI_TYPE_INTEGER) {
+ *number = param.Integer.Value;
+ } else {
+ error = AE_TYPE;
+ }
+ }
+
+ /*
+ * In some applications, a method that's expected to return an Integer
+ * may instead return a Buffer (probably to simplify some internal
+ * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
+ * convert it into an Integer as best we can.
+ *
+ * This is a hack.
+ */
+ if (error == AE_BUFFER_OVERFLOW) {
+ if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
+ error = AE_NO_MEMORY;
+ } else {
+ if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) {
+ error = acpi_ConvertBufferToInteger(&buf, number);
+ }
+ }
+ AcpiOsFree(buf.Pointer);
+ }
+ return(error);
+}
+
+ACPI_STATUS
+acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, int *number)
+{
+ ACPI_OBJECT *p;
+ int i;
+
+ p = (ACPI_OBJECT *)bufp->Pointer;
+ if (p->Type == ACPI_TYPE_INTEGER) {
+ *number = p->Integer.Value;
+ return(AE_OK);
+ }
+ if (p->Type != ACPI_TYPE_BUFFER)
+ return(AE_TYPE);
+ if (p->Buffer.Length > sizeof(int))
+ return(AE_BAD_DATA);
+ *number = 0;
+ for (i = 0; i < p->Buffer.Length; i++)
+ *number += (*(p->Buffer.Pointer + i) << (i * 8));
+ return(AE_OK);
+}
+
+/*
+ * Iterate over the elements of an a package object, calling the supplied
+ * function for each element.
+ *
+ * XXX possible enhancement might be to abort traversal on error.
+ */
+ACPI_STATUS
+acpi_ForeachPackageObject(ACPI_OBJECT *pkg, void (* func)(ACPI_OBJECT *comp, void *arg), void *arg)
+{
+ ACPI_OBJECT *comp;
+ int i;
+
+ if ((pkg == NULL) || (pkg->Type != ACPI_TYPE_PACKAGE))
+ return(AE_BAD_PARAMETER);
+
+ /* iterate over components */
+ for (i = 0, comp = pkg->Package.Elements; i < pkg->Package.Count; i++, comp++)
+ func(comp, arg);
+
+ return(AE_OK);
+}
+
+/*
+ * Find the (index)th resource object in a set.
+ */
+ACPI_STATUS
+acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
+{
+ ACPI_RESOURCE *rp;
+ int i;
+
+ rp = (ACPI_RESOURCE *)buf->Pointer;
+ i = index;
+ while (i-- > 0) {
+ /* range check */
+ if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
+ return(AE_BAD_PARAMETER);
+ /* check for terminator */
+ if ((rp->Id == ACPI_RSTYPE_END_TAG) ||
+ (rp->Length == 0))
+ return(AE_NOT_FOUND);
+ rp = ACPI_RESOURCE_NEXT(rp);
+ }
+ if (resp != NULL)
+ *resp = rp;
+ return(AE_OK);
+}
+
+/*
+ * Append an ACPI_RESOURCE to an ACPI_BUFFER.
+ *
+ * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
+ * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
+ * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
+ * resources.
+ */
+#define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
+
+ACPI_STATUS
+acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
+{
+ ACPI_RESOURCE *rp;
+ void *newp;
+
+ /*
+ * Initialise the buffer if necessary.
+ */
+ if (buf->Pointer == NULL) {
+ buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
+ if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
+ return(AE_NO_MEMORY);
+ rp = (ACPI_RESOURCE *)buf->Pointer;
+ rp->Id = ACPI_RSTYPE_END_TAG;
+ rp->Length = 0;
+ }
+ if (res == NULL)
+ return(AE_OK);
+
+ /*
+ * Scan the current buffer looking for the terminator.
+ * This will either find the terminator or hit the end
+ * of the buffer and return an error.
+ */
+ rp = (ACPI_RESOURCE *)buf->Pointer;
+ for (;;) {
+ /* range check, don't go outside the buffer */
+ if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
+ return(AE_BAD_PARAMETER);
+ if ((rp->Id == ACPI_RSTYPE_END_TAG) ||
+ (rp->Length == 0)) {
+ break;
+ }
+ rp = ACPI_RESOURCE_NEXT(rp);
+ }
+
+ /*
+ * Check the size of the buffer and expand if required.
+ *
+ * Required size is:
+ * size of existing resources before terminator +
+ * size of new resource and header +
+ * size of terminator.
+ *
+ * Note that this loop should really only run once, unless
+ * for some reason we are stuffing a *really* huge resource.
+ */
+ while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
+ res->Length + ACPI_RESOURCE_LENGTH_NO_DATA +
+ ACPI_RESOURCE_LENGTH) >= buf->Length) {
+ if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
+ return(AE_NO_MEMORY);
+ bcopy(buf->Pointer, newp, buf->Length);
+ rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
+ ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
+ AcpiOsFree(buf->Pointer);
+ buf->Pointer = newp;
+ buf->Length += buf->Length;
+ }
+
+ /*
+ * Insert the new resource.
+ */
+ bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA);
+
+ /*
+ * And add the terminator.
+ */
+ rp = ACPI_RESOURCE_NEXT(rp);
+ rp->Id = ACPI_RSTYPE_END_TAG;
+ rp->Length = 0;
+
+ return(AE_OK);
+}
+
+/*
+ * Set interrupt model.
+ */
+ACPI_STATUS
+acpi_SetIntrModel(int model)
+{
+ ACPI_OBJECT_LIST ArgList;
+ ACPI_OBJECT Arg;
+
+ Arg.Type = ACPI_TYPE_INTEGER;
+ Arg.Integer.Value = model;
+ ArgList.Count = 1;
+ ArgList.Pointer = &Arg;
+ return (AcpiEvaluateObject(ACPI_ROOT_OBJECT, "_PIC", &ArgList, NULL));
+}
+
+#define ACPI_MINIMUM_AWAKETIME 5
+
+static void
+acpi_sleep_enable(void *arg)
+{
+ ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
+}
+
+/*
+ * Set the system sleep state
+ *
+ * Currently we only support S1 and S5
+ */
+ACPI_STATUS
+acpi_SetSleepState(struct acpi_softc *sc, int state)
+{
+ ACPI_STATUS status = AE_OK;
+ UINT8 TypeA;
+ UINT8 TypeB;
+
+ ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
+ ACPI_ASSERTLOCK;
+
+ if (sc->acpi_sstate != ACPI_STATE_S0)
+ return_ACPI_STATUS(AE_BAD_PARAMETER); /* avoid reentry */
+
+ if (sc->acpi_sleep_disabled)
+ return_ACPI_STATUS(AE_OK);
+
+ switch (state) {
+ case ACPI_STATE_S0: /* XXX only for testing */
+ if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) {
+ device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status));
+ }
+ break;
+
+ case ACPI_STATE_S1:
+ case ACPI_STATE_S2:
+ case ACPI_STATE_S3:
+ case ACPI_STATE_S4:
+ if (ACPI_FAILURE(status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB))) {
+ device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n", AcpiFormatException(status));
+ break;
+ }
+
+ sc->acpi_sstate = state;
+ sc->acpi_sleep_disabled = 1;
+
+ /*
+ * Inform all devices that we are going to sleep.
+ */
+ if (DEVICE_SUSPEND(root_bus) != 0) {
+ /*
+ * Re-wake the system.
+ *
+ * XXX note that a better two-pass approach with a 'veto' pass
+ * followed by a "real thing" pass would be better, but the
+ * current bus interface does not provide for this.
+ */
+ DEVICE_RESUME(root_bus);
+ return_ACPI_STATUS(AE_ERROR);
+ }
+
+ if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(state))) {
+ device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
+ AcpiFormatException(status));
+ break;
+ }
+
+ if (sc->acpi_sleep_delay > 0) {
+ DELAY(sc->acpi_sleep_delay * 1000000);
+ }
+
+ if (state != ACPI_STATE_S1) {
+ acpi_sleep_machdep(sc, state);
+
+ /* AcpiEnterSleepState() maybe incompleted, unlock here if locked. */
+ if (AcpiGbl_AcpiMutexInfo[ACPI_MTX_HARDWARE].OwnerId != ACPI_MUTEX_NOT_ACQUIRED) {
+ AcpiUtReleaseMutex(ACPI_MTX_HARDWARE);
+ }
+
+ /* Re-enable ACPI hardware on wakeup from sleep state 4. */
+ if (state == ACPI_STATE_S4) {
+ AcpiEnable();
+ }
+ } else {
+ if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) {
+ device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status));
+ break;
+ }
+ }
+ AcpiLeaveSleepState((UINT8)state);
+ DEVICE_RESUME(root_bus);
+ sc->acpi_sstate = ACPI_STATE_S0;
+ acpi_enable_fixed_events(sc);
+ break;
+
+ case ACPI_STATE_S5:
+ /*
+ * Shut down cleanly and power off. This will call us back through the
+ * shutdown handlers.
+ */
+ shutdown_nice(RB_POWEROFF);
+ break;
+
+ default:
+ status = AE_BAD_PARAMETER;
+ break;
+ }
+
+ if (sc->acpi_sleep_disabled)
+ timeout(acpi_sleep_enable, (caddr_t)sc, hz * ACPI_MINIMUM_AWAKETIME);
+
+ return_ACPI_STATUS(status);
+}
+
+/*
+ * Enable/Disable ACPI
+ */
+ACPI_STATUS
+acpi_Enable(struct acpi_softc *sc)
+{
+ ACPI_STATUS status;
+ u_int32_t flags;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ ACPI_ASSERTLOCK;
+
+ flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT |
+ ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
+ if (!sc->acpi_enabled) {
+ status = AcpiEnableSubsystem(flags);
+ } else {
+ status = AE_OK;
+ }
+ if (status == AE_OK)
+ sc->acpi_enabled = 1;
+ return_ACPI_STATUS(status);
+}
+
+ACPI_STATUS
+acpi_Disable(struct acpi_softc *sc)
+{
+ ACPI_STATUS status;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ ACPI_ASSERTLOCK;
+
+ if (sc->acpi_enabled) {
+ status = AcpiDisable();
+ } else {
+ status = AE_OK;
+ }
+ if (status == AE_OK)
+ sc->acpi_enabled = 0;
+ return_ACPI_STATUS(status);
+}
+
+/*
+ * ACPI Event Handlers
+ */
+
+/* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
+
+static void
+acpi_system_eventhandler_sleep(void *arg, int state)
+{
+ ACPI_LOCK_DECL;
+ ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
+
+ ACPI_LOCK;
+ if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
+ acpi_SetSleepState((struct acpi_softc *)arg, state);
+ ACPI_UNLOCK;
+ return_VOID;
+}
+
+static void
+acpi_system_eventhandler_wakeup(void *arg, int state)
+{
+ ACPI_LOCK_DECL;
+ ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
+
+ /* Well, what to do? :-) */
+
+ ACPI_LOCK;
+ ACPI_UNLOCK;
+
+ return_VOID;
+}
+
+/*
+ * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
+ */
+UINT32
+acpi_eventhandler_power_button_for_sleep(void *context)
+{
+ struct acpi_softc *sc = (struct acpi_softc *)context;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
+
+ return_VALUE(ACPI_INTERRUPT_HANDLED);
+}
+
+UINT32
+acpi_eventhandler_power_button_for_wakeup(void *context)
+{
+ struct acpi_softc *sc = (struct acpi_softc *)context;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
+
+ return_VALUE(ACPI_INTERRUPT_HANDLED);
+}
+
+UINT32
+acpi_eventhandler_sleep_button_for_sleep(void *context)
+{
+ struct acpi_softc *sc = (struct acpi_softc *)context;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
+
+ return_VALUE(ACPI_INTERRUPT_HANDLED);
+}
+
+UINT32
+acpi_eventhandler_sleep_button_for_wakeup(void *context)
+{
+ struct acpi_softc *sc = (struct acpi_softc *)context;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
+
+ return_VALUE(ACPI_INTERRUPT_HANDLED);
+}
+
+/*
+ * XXX This is kinda ugly, and should not be here.
+ */
+struct acpi_staticbuf {
+ ACPI_BUFFER buffer;
+ char data[512];
+};
+
+char *
+acpi_name(ACPI_HANDLE handle)
+{
+ static struct acpi_staticbuf buf;
+
+ ACPI_ASSERTLOCK;
+
+ buf.buffer.Length = 512;
+ buf.buffer.Pointer = &buf.data[0];
+
+ if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer)))
+ return(buf.buffer.Pointer);
+ return("(unknown path)");
+}
+
+/*
+ * Debugging/bug-avoidance. Avoid trying to fetch info on various
+ * parts of the namespace.
+ */
+int
+acpi_avoid(ACPI_HANDLE handle)
+{
+ char *cp, *env, *np;
+ int len;
+
+ np = acpi_name(handle);
+ if (*np == '\\')
+ np++;
+ if ((env = getenv("debug.acpi.avoid")) == NULL)
+ return(0);
+
+ /* scan the avoid list checking for a match */
+ cp = env;
+ for (;;) {
+ while ((*cp != 0) && isspace(*cp))
+ cp++;
+ if (*cp == 0)
+ break;
+ len = 0;
+ while ((cp[len] != 0) && !isspace(cp[len]))
+ len++;
+ if (!strncmp(cp, np, len)) {
+ freeenv(env);
+ return(1);
+ }
+ cp += len;
+ }
+ freeenv(env);
+ return(0);
+}
+
+/*
+ * Debugging/bug-avoidance. Disable ACPI subsystem components.
+ */
+int
+acpi_disabled(char *subsys)
+{
+ char *cp, *env;
+ int len;
+
+ if ((env = getenv("debug.acpi.disable")) == NULL)
+ return(0);
+ if (!strcmp(env, "all")) {
+ freeenv(env);
+ return(1);
+ }
+
+ /* scan the disable list checking for a match */
+ cp = env;
+ for (;;) {
+ while ((*cp != 0) && isspace(*cp))
+ cp++;
+ if (*cp == 0)
+ break;
+ len = 0;
+ while ((cp[len] != 0) && !isspace(cp[len]))
+ len++;
+ if (!strncmp(cp, subsys, len)) {
+ freeenv(env);
+ return(1);
+ }
+ cp += len;
+ }
+ freeenv(env);
+ return(0);
+}
+
+/*
+ * Device wake capability enable/disable.
+ */
+void
+acpi_device_enable_wake_capability(ACPI_HANDLE h, int enable)
+{
+ ACPI_OBJECT_LIST ArgList;
+ ACPI_OBJECT Arg;
+
+ /*
+ * TBD: All Power Resources referenced by elements 2 through N
+ * of the _PRW object are put into the ON state.
+ */
+
+ /*
+ * enable/disable device wake function.
+ */
+
+ ArgList.Count = 1;
+ ArgList.Pointer = &Arg;
+
+ Arg.Type = ACPI_TYPE_INTEGER;
+ Arg.Integer.Value = enable;
+
+ (void)AcpiEvaluateObject(h, "_PSW", &ArgList, NULL);
+}
+
+void
+acpi_device_enable_wake_event(ACPI_HANDLE h)
+{
+ struct acpi_softc *sc;
+ ACPI_STATUS status;
+ ACPI_BUFFER prw_buffer;
+ ACPI_OBJECT *res;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ if ((sc = devclass_get_softc(acpi_devclass, 0)) == NULL) {
+ return;
+ }
+
+ /*
+ * _PRW object is only required for devices that have the ability
+ * to wake the system from a system sleeping state.
+ */
+ prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
+ status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
+ if (ACPI_FAILURE(status)) {
+ return;
+ }
+
+ res = (ACPI_OBJECT *)prw_buffer.Pointer;
+ if (res == NULL) {
+ return;
+ }
+
+ if ((res->Type != ACPI_TYPE_PACKAGE) || (res->Package.Count < 2)) {
+ goto out;
+ }
+
+ /*
+ * The element 1 of the _PRW object:
+ * The lowest power system sleeping state that can be entered
+ * while still providing wake functionality.
+ * The sleeping state being entered must be greater or equal to
+ * the power state declared in element 1 of the _PRW object.
+ */
+ if (res->Package.Elements[1].Type != ACPI_TYPE_INTEGER) {
+ goto out;
+ }
+
+ if (sc->acpi_sstate > res->Package.Elements[1].Integer.Value) {
+ goto out;
+ }
+
+ /*
+ * The element 0 of the _PRW object:
+ */
+ switch(res->Package.Elements[0].Type) {
+ case ACPI_TYPE_INTEGER:
+ /*
+ * If the data type of this package element is numeric, then this
+ * _PRW package element is the bit index in the GPEx_EN, in the
+ * GPE blocks described in the FADT, of the enable bit that is
+ * enabled for the wake event.
+ */
+
+ status = AcpiEnableEvent(res->Package.Elements[0].Integer.Value,
+ ACPI_EVENT_GPE, ACPI_EVENT_WAKE_ENABLE);
+ if (ACPI_FAILURE(status))
+ printf("%s: EnableEvent Failed\n", __func__);
+ break;
+
+ case ACPI_TYPE_PACKAGE:
+ /* XXX TBD */
+
+ /*
+ * If the data type of this package element is a package, then this
+ * _PRW package element is itself a package containing two
+ * elements. The first is an object reference to the GPE Block
+ * device that contains the GPE that will be triggered by the wake
+ * event. The second element is numeric and it contains the bit
+ * index in the GPEx_EN, in the GPE Block referenced by the
+ * first element in the package, of the enable bit that is enabled for
+ * the wake event.
+ * For example, if this field is a package then it is of the form:
+ * Package() {\_SB.PCI0.ISA.GPE, 2}
+ */
+
+ break;
+
+ default:
+ break;
+ }
+
+out:
+ if (prw_buffer.Pointer != NULL)
+ AcpiOsFree(prw_buffer.Pointer);
+ return;
+}
+
+/*
+ * Control interface.
+ *
+ * We multiplex ioctls for all participating ACPI devices here. Individual
+ * drivers wanting to be accessible via /dev/acpi should use the register/deregister
+ * interface to make their handlers visible.
+ */
+struct acpi_ioctl_hook
+{
+ TAILQ_ENTRY(acpi_ioctl_hook) link;
+ u_long cmd;
+ int (* fn)(u_long cmd, caddr_t addr, void *arg);
+ void *arg;
+};
+
+static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
+static int acpi_ioctl_hooks_initted;
+
+/*
+ * Register an ioctl handler.
+ */
+int
+acpi_register_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg), void *arg)
+{
+ struct acpi_ioctl_hook *hp;
+
+ if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
+ return(ENOMEM);
+ hp->cmd = cmd;
+ hp->fn = fn;
+ hp->arg = arg;
+ if (acpi_ioctl_hooks_initted == 0) {
+ TAILQ_INIT(&acpi_ioctl_hooks);
+ acpi_ioctl_hooks_initted = 1;
+ }
+ TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
+ return(0);
+}
+
+/*
+ * Deregister an ioctl handler.
+ */
+void
+acpi_deregister_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg))
+{
+ struct acpi_ioctl_hook *hp;
+
+ TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
+ if ((hp->cmd == cmd) && (hp->fn == fn))
+ break;
+
+ if (hp != NULL) {
+ TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
+ free(hp, M_ACPIDEV);
+ }
+}
+
+static int
+acpiopen(dev_t dev, int flag, int fmt, d_thread_t *td)
+{
+ return(0);
+}
+
+static int
+acpiclose(dev_t dev, int flag, int fmt, d_thread_t *td)
+{
+ return(0);
+}
+
+static int
+acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
+{
+ struct acpi_softc *sc;
+ struct acpi_ioctl_hook *hp;
+ int error, xerror, state;
+ ACPI_LOCK_DECL;
+
+ ACPI_LOCK;
+
+ error = state = 0;
+ sc = dev->si_drv1;
+
+ /*
+ * Scan the list of registered ioctls, looking for handlers.
+ */
+ if (acpi_ioctl_hooks_initted) {
+ TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
+ if (hp->cmd == cmd) {
+ xerror = hp->fn(cmd, addr, hp->arg);
+ if (xerror != 0)
+ error = xerror;
+ goto out;
+ }
+ }
+ }
+
+ /*
+ * Core system ioctls.
+ */
+ switch (cmd) {
+ case ACPIIO_ENABLE:
+ if (ACPI_FAILURE(acpi_Enable(sc)))
+ error = ENXIO;
+ break;
+
+ case ACPIIO_DISABLE:
+ if (ACPI_FAILURE(acpi_Disable(sc)))
+ error = ENXIO;
+ break;
+
+ case ACPIIO_SETSLPSTATE:
+ if (!sc->acpi_enabled) {
+ error = ENXIO;
+ break;
+ }
+ state = *(int *)addr;
+ if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) {
+ acpi_SetSleepState(sc, state);
+ } else {
+ error = EINVAL;
+ }
+ break;
+
+ default:
+ if (error == 0)
+ error = EINVAL;
+ break;
+ }
+
+out:
+ ACPI_UNLOCK;
+ return(error);
+}
+
+static int
+acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
+{
+ char sleep_state[10];
+ int error;
+ u_int new_state, old_state;
+
+ old_state = *(u_int *)oidp->oid_arg1;
+ if (old_state > ACPI_S_STATES_MAX+1) {
+ strcpy(sleep_state, "unknown");
+ } else {
+ bzero(sleep_state, sizeof(sleep_state));
+ strncpy(sleep_state, sleep_state_names[old_state],
+ sizeof(sleep_state_names[old_state]));
+ }
+ error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
+ if (error == 0 && req->newptr != NULL) {
+ for (new_state = ACPI_STATE_S0; new_state <= ACPI_S_STATES_MAX+1; new_state++) {
+ if (strncmp(sleep_state, sleep_state_names[new_state],
+ sizeof(sleep_state)) == 0)
+ break;
+ }
+ if (new_state <= ACPI_S_STATES_MAX+1) {
+ if (new_state != old_state) {
+ *(u_int *)oidp->oid_arg1 = new_state;
+ }
+ } else {
+ error = EINVAL;
+ }
+ }
+ return(error);
+}
+
+#ifdef ACPI_DEBUG
+/*
+ * Support for parsing debug options from the kernel environment.
+ *
+ * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
+ * by specifying the names of the bits in the debug.acpi.layer and
+ * debug.acpi.level environment variables. Bits may be unset by
+ * prefixing the bit name with !.
+ */
+struct debugtag
+{
+ char *name;
+ UINT32 value;
+};
+
+static struct debugtag dbg_layer[] = {
+ {"ACPI_UTILITIES", ACPI_UTILITIES},
+ {"ACPI_HARDWARE", ACPI_HARDWARE},
+ {"ACPI_EVENTS", ACPI_EVENTS},
+ {"ACPI_TABLES", ACPI_TABLES},
+ {"ACPI_NAMESPACE", ACPI_NAMESPACE},
+ {"ACPI_PARSER", ACPI_PARSER},
+ {"ACPI_DISPATCHER", ACPI_DISPATCHER},
+ {"ACPI_EXECUTER", ACPI_EXECUTER},
+ {"ACPI_RESOURCES", ACPI_RESOURCES},
+ {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
+ {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
+ {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
+
+ {"ACPI_BUS", ACPI_BUS},
+ {"ACPI_SYSTEM", ACPI_SYSTEM},
+ {"ACPI_POWER", ACPI_POWER},
+ {"ACPI_EC", ACPI_EC},
+ {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
+ {"ACPI_BATTERY", ACPI_BATTERY},
+ {"ACPI_BUTTON", ACPI_BUTTON},
+ {"ACPI_PROCESSOR", ACPI_PROCESSOR},
+ {"ACPI_THERMAL", ACPI_THERMAL},
+ {"ACPI_FAN", ACPI_FAN},
+
+ {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
+ {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
+ {NULL, 0}
+};
+
+static struct debugtag dbg_level[] = {
+ {"ACPI_LV_OK", ACPI_LV_OK},
+ {"ACPI_LV_INFO", ACPI_LV_INFO},
+ {"ACPI_LV_WARN", ACPI_LV_WARN},
+ {"ACPI_LV_ERROR", ACPI_LV_ERROR},
+ {"ACPI_LV_FATAL", ACPI_LV_FATAL},
+ {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
+ {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
+
+ /* Trace verbosity level 1 [Standard Trace Level] */
+ {"ACPI_LV_PARSE", ACPI_LV_PARSE},
+ {"ACPI_LV_LOAD", ACPI_LV_LOAD},
+ {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
+ {"ACPI_LV_EXEC", ACPI_LV_EXEC},
+ {"ACPI_LV_NAMES", ACPI_LV_NAMES},
+ {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
+ {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
+ {"ACPI_LV_TABLES", ACPI_LV_TABLES},
+ {"ACPI_LV_VALUES", ACPI_LV_VALUES},
+ {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
+ {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
+ {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
+ {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
+ {"ACPI_LV_INIT", ACPI_LV_INIT},
+ {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
+
+ /* Trace verbosity level 2 [Function tracing and memory allocation] */
+ {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
+ {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
+ {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
+ {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
+ {"ACPI_LV_ALL", ACPI_LV_ALL},
+
+ /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
+ {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
+ {"ACPI_LV_THREADS", ACPI_LV_THREADS},
+ {"ACPI_LV_IO", ACPI_LV_IO},
+ {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
+ {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
+
+ /* Exceptionally verbose output -- also used in the global "DebugLevel" */
+ {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
+ {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
+ {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
+ {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
+ {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
+ {NULL, 0}
+};
+
+static void
+acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
+{
+ char *ep;
+ int i, l;
+ int set;
+
+ while (*cp) {
+ if (isspace(*cp)) {
+ cp++;
+ continue;
+ }
+ ep = cp;
+ while (*ep && !isspace(*ep))
+ ep++;
+ if (*cp == '!') {
+ set = 0;
+ cp++;
+ if (cp == ep)
+ continue;
+ } else {
+ set = 1;
+ }
+ l = ep - cp;
+ for (i = 0; tag[i].name != NULL; i++) {
+ if (!strncmp(cp, tag[i].name, l)) {
+ if (set) {
+ *flag |= tag[i].value;
+ } else {
+ *flag &= ~tag[i].value;
+ }
+ printf("ACPI_DEBUG: set '%s'\n", tag[i].name);
+ }
+ }
+ cp = ep;
+ }
+}
+
+static void
+acpi_set_debugging(void *junk)
+{
+ char *cp;
+
+ if (!cold)
+ return;
+
+ AcpiDbgLayer = 0;
+ AcpiDbgLevel = 0;
+ if ((cp = getenv("debug.acpi.layer")) != NULL) {
+ acpi_parse_debug(cp, &dbg_layer[0], &AcpiDbgLayer);
+ freeenv(cp);
+ }
+ if ((cp = getenv("debug.acpi.level")) != NULL) {
+ acpi_parse_debug(cp, &dbg_level[0], &AcpiDbgLevel);
+ freeenv(cp);
+ }
+
+ printf("ACPI debug layer 0x%x debug level 0x%x\n", AcpiDbgLayer, AcpiDbgLevel);
+}
+SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, NULL);
+#endif
+
+static int
+acpi_pm_func(u_long cmd, void *arg, ...)
+{
+ int state, acpi_state;
+ int error;
+ struct acpi_softc *sc;
+ va_list ap;
+
+ error = 0;
+ switch (cmd) {
+ case POWER_CMD_SUSPEND:
+ sc = (struct acpi_softc *)arg;
+ if (sc == NULL) {
+ error = EINVAL;
+ goto out;
+ }
+
+ va_start(ap, arg);
+ state = va_arg(ap, int);
+ va_end(ap);
+
+ switch (state) {
+ case POWER_SLEEP_STATE_STANDBY:
+ acpi_state = sc->acpi_standby_sx;
+ break;
+ case POWER_SLEEP_STATE_SUSPEND:
+ acpi_state = sc->acpi_suspend_sx;
+ break;
+ case POWER_SLEEP_STATE_HIBERNATE:
+ acpi_state = ACPI_STATE_S4;
+ break;
+ default:
+ error = EINVAL;
+ goto out;
+ }
+
+ acpi_SetSleepState(sc, acpi_state);
+ break;
+
+ default:
+ error = EINVAL;
+ goto out;
+ }
+
+out:
+ return (error);
+}
+
+static void
+acpi_pm_register(void *arg)
+{
+ int error;
+
+ if (!cold)
+ return;
+
+ if (!resource_int_value("acpi", 0, "disabled", &error) &&
+ (error != 0))
+ return;
+
+ power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
+}
+
+SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
+
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