#include <linux/list.h>
#include <linux/sched.h>
#include <linux/pm.h>
-#include <linux/pm_legacy.h>
#include <linux/device.h>
#include <linux/proc_fs.h>
+#include <linux/acpi.h>
#ifdef CONFIG_X86
#include <asm/mpspec.h>
#endif
+#include <linux/pci.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
+#include <linux/dmi.h>
+
+#include "internal.h"
#define _COMPONENT ACPI_BUS_COMPONENT
ACPI_MODULE_NAME("bus");
-#ifdef CONFIG_X86
-extern void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger);
-#endif
struct acpi_device *acpi_root;
struct proc_dir_entry *acpi_root_dir;
#define STRUCT_TO_INT(s) (*((int*)&s))
+static int set_power_nocheck(const struct dmi_system_id *id)
+{
+ printk(KERN_NOTICE PREFIX "%s detected - "
+ "disable power check in power transistion\n", id->ident);
+ acpi_power_nocheck = 1;
+ return 0;
+}
+static struct dmi_system_id __cpuinitdata power_nocheck_dmi_table[] = {
+ {
+ set_power_nocheck, "HP Pavilion 05", {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
+ DMI_MATCH(DMI_SYS_VENDOR, "HP Pavilion 05"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "2001211RE101GLEND") }, NULL},
+ {},
+};
+
+
/* --------------------------------------------------------------------------
Device Management
-------------------------------------------------------------------------- */
EXPORT_SYMBOL(acpi_bus_get_device);
-int acpi_bus_get_status(struct acpi_device *device)
+acpi_status acpi_bus_get_status_handle(acpi_handle handle,
+ unsigned long long *sta)
{
- acpi_status status = AE_OK;
- unsigned long sta = 0;
-
+ acpi_status status;
- if (!device)
- return -EINVAL;
+ status = acpi_evaluate_integer(handle, "_STA", NULL, sta);
+ if (ACPI_SUCCESS(status))
+ return AE_OK;
- /*
- * Evaluate _STA if present.
- */
- if (device->flags.dynamic_status) {
- status =
- acpi_evaluate_integer(device->handle, "_STA", NULL, &sta);
- if (ACPI_FAILURE(status))
- return -ENODEV;
- STRUCT_TO_INT(device->status) = (int)sta;
+ if (status == AE_NOT_FOUND) {
+ *sta = ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED |
+ ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING;
+ return AE_OK;
}
+ return status;
+}
- /*
- * Otherwise we assume the status of our parent (unless we don't
- * have one, in which case status is implied).
- */
- else if (device->parent)
- device->status = device->parent->status;
- else
- STRUCT_TO_INT(device->status) =
- ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED |
- ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING;
+int acpi_bus_get_status(struct acpi_device *device)
+{
+ acpi_status status;
+ unsigned long long sta;
+
+ status = acpi_bus_get_status_handle(device->handle, &sta);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ STRUCT_TO_INT(device->status) = (int) sta;
if (device->status.functional && !device->status.present) {
- printk(KERN_WARNING PREFIX "Device [%s] status [%08x]: "
- "functional but not present; setting present\n",
- device->pnp.bus_id, (u32) STRUCT_TO_INT(device->status));
- device->status.present = 1;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: "
+ "functional but not present;\n",
+ device->pnp.bus_id,
+ (u32) STRUCT_TO_INT(device->status)));
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n",
device->pnp.bus_id,
(u32) STRUCT_TO_INT(device->status)));
-
return 0;
}
-
EXPORT_SYMBOL(acpi_bus_get_status);
+void acpi_bus_private_data_handler(acpi_handle handle,
+ void *context)
+{
+ return;
+}
+EXPORT_SYMBOL(acpi_bus_private_data_handler);
+
+int acpi_bus_get_private_data(acpi_handle handle, void **data)
+{
+ acpi_status status = AE_OK;
+
+ if (!*data)
+ return -EINVAL;
+
+ status = acpi_get_data(handle, acpi_bus_private_data_handler, data);
+ if (ACPI_FAILURE(status) || !*data) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
+ handle));
+ return -ENODEV;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(acpi_bus_get_private_data);
+
/* --------------------------------------------------------------------------
Power Management
-------------------------------------------------------------------------- */
int result = 0;
acpi_status status = 0;
struct acpi_device *device = NULL;
- unsigned long psc = 0;
+ unsigned long long psc = 0;
result = acpi_bus_get_device(handle, &device);
if (!device->flags.power_manageable) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device `[%s]' is not power manageable\n",
- device->dev.kobj.name));
+ kobject_name(&device->dev.kobj)));
return -ENODEV;
}
/*
- * Get device's current power state if it's unknown
- * This means device power state isn't initialized or previous setting failed
+ * Get device's current power state
*/
- if ((device->power.state == ACPI_STATE_UNKNOWN) || device->flags.force_power_state)
+ if (!acpi_power_nocheck) {
+ /*
+ * Maybe the incorrect power state is returned on the bogus
+ * bios, which is different with the real power state.
+ * For example: the bios returns D0 state and the real power
+ * state is D3. OS expects to set the device to D0 state. In
+ * such case if OS uses the power state returned by the BIOS,
+ * the device can't be transisted to the correct power state.
+ * So if the acpi_power_nocheck is set, it is unnecessary to
+ * get the power state by calling acpi_bus_get_power.
+ */
acpi_bus_get_power(device->handle, &device->power.state);
+ }
if ((state == device->power.state) && !device->flags.force_power_state) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
state));
end:
if (result)
printk(KERN_WARNING PREFIX
- "Transitioning device [%s] to D%d\n",
+ "Device [%s] failed to transition to D%d\n",
device->pnp.bus_id, state);
- else
+ else {
+ device->power.state = state;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Device [%s] transitioned to D%d\n",
device->pnp.bus_id, state));
+ }
return result;
}
EXPORT_SYMBOL(acpi_bus_set_power);
+bool acpi_bus_power_manageable(acpi_handle handle)
+{
+ struct acpi_device *device;
+ int result;
+
+ result = acpi_bus_get_device(handle, &device);
+ return result ? false : device->flags.power_manageable;
+}
+
+EXPORT_SYMBOL(acpi_bus_power_manageable);
+
+bool acpi_bus_can_wakeup(acpi_handle handle)
+{
+ struct acpi_device *device;
+ int result;
+
+ result = acpi_bus_get_device(handle, &device);
+ return result ? false : device->wakeup.flags.valid;
+}
+
+EXPORT_SYMBOL(acpi_bus_can_wakeup);
+
/* --------------------------------------------------------------------------
Event Management
-------------------------------------------------------------------------- */
}
spin_lock_irqsave(&acpi_bus_event_lock, flags);
- entry =
- list_entry(acpi_bus_event_list.next, struct acpi_bus_event, node);
- if (entry)
+ if (!list_empty(&acpi_bus_event_list)) {
+ entry = list_entry(acpi_bus_event_list.next,
+ struct acpi_bus_event, node);
list_del(&entry->node);
+ }
spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
if (!entry)
return 0;
}
-EXPORT_SYMBOL(acpi_bus_receive_event);
#endif /* CONFIG_ACPI_PROC_EVENT */
/* --------------------------------------------------------------------------
Notification Handling
-------------------------------------------------------------------------- */
-static int
-acpi_bus_check_device(struct acpi_device *device, int *status_changed)
+static void acpi_bus_check_device(acpi_handle handle)
{
- acpi_status status = 0;
+ struct acpi_device *device;
+ acpi_status status;
struct acpi_device_status old_status;
-
+ if (acpi_bus_get_device(handle, &device))
+ return;
if (!device)
- return -EINVAL;
-
- if (status_changed)
- *status_changed = 0;
+ return;
old_status = device->status;
*/
if (device->parent && !device->parent->status.present) {
device->status = device->parent->status;
- if (STRUCT_TO_INT(old_status) != STRUCT_TO_INT(device->status)) {
- if (status_changed)
- *status_changed = 1;
- }
- return 0;
+ return;
}
status = acpi_bus_get_status(device);
if (ACPI_FAILURE(status))
- return -ENODEV;
+ return;
if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
- return 0;
-
- if (status_changed)
- *status_changed = 1;
+ return;
/*
* Device Insertion/Removal
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n"));
/* TBD: Handle device removal */
}
-
- return 0;
}
-static int acpi_bus_check_scope(struct acpi_device *device)
+static void acpi_bus_check_scope(acpi_handle handle)
{
- int result = 0;
- int status_changed = 0;
-
-
- if (!device)
- return -EINVAL;
-
/* Status Change? */
- result = acpi_bus_check_device(device, &status_changed);
- if (result)
- return result;
-
- if (!status_changed)
- return 0;
+ acpi_bus_check_device(handle);
/*
* TBD: Enumerate child devices within this device's scope and
* run acpi_bus_check_device()'s on them.
*/
+}
- return 0;
+static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list);
+int register_acpi_bus_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(&acpi_bus_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(register_acpi_bus_notifier);
+
+void unregister_acpi_bus_notifier(struct notifier_block *nb)
+{
+ blocking_notifier_chain_unregister(&acpi_bus_notify_list, nb);
}
+EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier);
/**
* acpi_bus_notify
*/
static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
{
- int result = 0;
struct acpi_device *device = NULL;
+ struct acpi_driver *driver;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n",
+ type, handle));
- if (acpi_bus_get_device(handle, &device))
- return;
+ blocking_notifier_call_chain(&acpi_bus_notify_list,
+ type, (void *)handle);
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received BUS CHECK notification for device [%s]\n",
- device->pnp.bus_id));
- result = acpi_bus_check_scope(device);
+ acpi_bus_check_scope(handle);
/*
* TBD: We'll need to outsource certain events to non-ACPI
* drivers via the device manager (device.c).
break;
case ACPI_NOTIFY_DEVICE_CHECK:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received DEVICE CHECK notification for device [%s]\n",
- device->pnp.bus_id));
- result = acpi_bus_check_device(device, NULL);
+ acpi_bus_check_device(handle);
/*
* TBD: We'll need to outsource certain events to non-ACPI
* drivers via the device manager (device.c).
break;
case ACPI_NOTIFY_DEVICE_WAKE:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received DEVICE WAKE notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD */
break;
case ACPI_NOTIFY_EJECT_REQUEST:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received EJECT REQUEST notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD */
break;
case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received DEVICE CHECK LIGHT notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD: Exactly what does 'light' mean? */
break;
case ACPI_NOTIFY_FREQUENCY_MISMATCH:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received FREQUENCY MISMATCH notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD */
break;
case ACPI_NOTIFY_BUS_MODE_MISMATCH:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received BUS MODE MISMATCH notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD */
break;
case ACPI_NOTIFY_POWER_FAULT:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received POWER FAULT notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD */
break;
break;
}
- return;
+ acpi_bus_get_device(handle, &device);
+ if (device) {
+ driver = device->driver;
+ if (driver && driver->ops.notify &&
+ (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
+ driver->ops.notify(device, type);
+ }
}
/* --------------------------------------------------------------------------
return 0;
}
-acpi_native_uint acpi_gbl_permanent_mmap;
+u8 acpi_gbl_permanent_mmap;
void __init acpi_early_init(void)
#ifdef CONFIG_X86
if (!acpi_ioapic) {
- extern u8 acpi_sci_flags;
-
/* compatible (0) means level (3) */
if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) {
acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK;
acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt,
(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2);
} else {
- extern int acpi_sci_override_gsi;
/*
* now that acpi_gbl_FADT is initialized,
* update it with result from INT_SRC_OVR parsing
acpi_status status = AE_OK;
extern acpi_status acpi_os_initialize1(void);
-
- status = acpi_os_initialize1();
+ acpi_os_initialize1();
status =
acpi_enable_subsystem(ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE);
goto error1;
}
- if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX
- "Unable to initialize ACPI OS objects\n");
- goto error1;
- }
-#ifdef CONFIG_ACPI_EC
/*
* ACPI 2.0 requires the EC driver to be loaded and work before
* the EC device is found in the namespace (i.e. before acpi_initialize_objects()
*/
status = acpi_ec_ecdt_probe();
/* Ignore result. Not having an ECDT is not fatal. */
-#endif
status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION);
if (ACPI_FAILURE(status)) {
goto error1;
}
+ /*
+ * Maybe EC region is required at bus_scan/acpi_get_devices. So it
+ * is necessary to enable it as early as possible.
+ */
+ acpi_boot_ec_enable();
+
printk(KERN_INFO PREFIX "Interpreter enabled\n");
/* Initialize sleep structures */
return -ENODEV;
}
-decl_subsys(acpi, NULL, NULL);
+struct kobject *acpi_kobj;
static int __init acpi_init(void)
{
return -ENODEV;
}
- result = firmware_register(&acpi_subsys);
- if (result < 0)
- printk(KERN_WARNING "%s: firmware_register error: %d\n",
- __FUNCTION__, result);
+ acpi_kobj = kobject_create_and_add("acpi", firmware_kobj);
+ if (!acpi_kobj) {
+ printk(KERN_WARNING "%s: kset create error\n", __func__);
+ acpi_kobj = NULL;
+ }
+ init_acpi_device_notify();
result = acpi_bus_init();
if (!result) {
-#ifdef CONFIG_PM_LEGACY
- if (!PM_IS_ACTIVE())
- pm_active = 1;
+ pci_mmcfg_late_init();
+ if (!(pm_flags & PM_APM))
+ pm_flags |= PM_ACPI;
else {
printk(KERN_INFO PREFIX
"APM is already active, exiting\n");
disable_acpi();
result = -ENODEV;
}
-#endif
} else
disable_acpi();
+ if (acpi_disabled)
+ return result;
+
+ /*
+ * If the laptop falls into the DMI check table, the power state check
+ * will be disabled in the course of device power transistion.
+ */
+ dmi_check_system(power_nocheck_dmi_table);
+
+ acpi_scan_init();
+ acpi_ec_init();
+ acpi_power_init();
+ acpi_system_init();
+ acpi_debug_init();
+ acpi_sleep_proc_init();
+ acpi_wakeup_device_init();
return result;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff