{
acpi_status status;
struct acpi_gpe_event_info *gpe_event_info;
- struct acpi_gpe_walk_info walk_info;
- u32 wake_gpe_count;
u32 gpe_enabled_count;
u32 gpe_index;
u32 gpe_number;
}
/*
- * Runtime option: Should wake GPEs be enabled at runtime? The default
- * is no, they should only be enabled just as the machine goes to sleep.
+ * Enable all GPEs that have a corresponding method. Any other GPEs
+ * within this block must be enabled via the acpi_enable_gpe interface.
*/
- if (acpi_gbl_leave_wake_gpes_disabled) {
- /*
- * Differentiate runtime vs wake GPEs, via the _PRW control methods.
- * Each GPE that has one or more _PRWs that reference it is by
- * definition a wake GPE and will not be enabled while the machine
- * is running.
- */
- walk_info.gpe_block = gpe_block;
- walk_info.gpe_device = gpe_device;
- walk_info.execute_by_owner_id = FALSE;
-
- status =
- acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
- ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK,
- acpi_ev_match_prw_and_gpe, NULL,
- &walk_info, NULL);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "While executing _PRW methods"));
- }
- }
-
- /*
- * Enable all GPEs that have a corresponding method and are not
- * capable of generating wakeups. Any other GPEs within this block
- * must be enabled via the acpi_enable_gpe interface.
- */
- wake_gpe_count = 0;
gpe_enabled_count = 0;
if (gpe_device == acpi_gbl_fadt_gpe_device) {
goto enabled;
}
- if (gpe_event_info->flags & ACPI_GPE_CAN_WAKE) {
- wake_gpe_count++;
- if (acpi_gbl_leave_wake_gpes_disabled) {
- continue;
- }
- }
-
/* Ignore GPEs that have no corresponding _Lxx/_Exx method */
if (!(gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD)) {
}
}
- if (gpe_enabled_count || wake_gpe_count) {
+ if (gpe_enabled_count) {
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
- "Enabled %u Runtime GPEs, added %u Wake GPEs in this block\n",
- gpe_enabled_count, wake_gpe_count));
+ "Enabled %u GPEs in this block\n",
+ gpe_enabled_count));
}
return_ACPI_STATUS(AE_OK);
* DESCRIPTION: Check for new GPE methods (_Lxx/_Exx) made available as a
* result of a Load() or load_table() operation. If new GPE
* methods have been installed, register the new methods and
- * enable and runtime GPEs that are associated with them. Also,
- * run any newly loaded _PRW methods in order to discover any
- * new CAN_WAKE GPEs.
+ * enable and runtime GPEs that are associated with them.
*
******************************************************************************/
struct acpi_gpe_block_info *gpe_block;
struct acpi_gpe_walk_info walk_info;
acpi_status status = AE_OK;
- u32 new_wake_gpe_count = 0;
-
- /* We will examine only _PRW/_Lxx/_Exx methods owned by this table */
-
- walk_info.owner_id = table_owner_id;
- walk_info.execute_by_owner_id = TRUE;
- walk_info.count = 0;
-
- if (acpi_gbl_leave_wake_gpes_disabled) {
- /*
- * 1) Run any newly-loaded _PRW methods to find any GPEs that
- * can now be marked as CAN_WAKE GPEs. Note: We must run the
- * _PRW methods before we process the _Lxx/_Exx methods because
- * we will enable all runtime GPEs associated with the new
- * _Lxx/_Exx methods at the time we process those methods.
- *
- * Unlock interpreter so that we can run the _PRW methods.
- */
- walk_info.gpe_block = NULL;
- walk_info.gpe_device = NULL;
-
- acpi_ex_exit_interpreter();
-
- status =
- acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
- ACPI_UINT32_MAX,
- ACPI_NS_WALK_NO_UNLOCK,
- acpi_ev_match_prw_and_gpe, NULL,
- &walk_info, NULL);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "While executing _PRW methods"));
- }
-
- acpi_ex_enter_interpreter();
- new_wake_gpe_count = walk_info.count;
- }
/*
* 2) Find any _Lxx/_Exx GPE methods that have just been loaded.
*
- * Any GPEs that correspond to new _Lxx/_Exx methods and are not
- * marked as CAN_WAKE are immediately enabled.
+ * Any GPEs that correspond to new _Lxx/_Exx methods are immediately
+ * enabled.
*
* Examine the namespace underneath each gpe_device within the
* gpe_block lists.
return;
}
+ walk_info.owner_id = table_owner_id;
+ walk_info.execute_by_owner_id = TRUE;
walk_info.count = 0;
walk_info.enable_this_gpe = TRUE;
gpe_xrupt_info = gpe_xrupt_info->next;
}
- if (walk_info.count || new_wake_gpe_count) {
- ACPI_INFO((AE_INFO,
- "Enabled %u new runtime GPEs, added %u new wakeup GPEs",
- walk_info.count, new_wake_gpe_count));
+ if (walk_info.count) {
+ ACPI_INFO((AE_INFO, "Enabled %u new GPEs", walk_info.count));
}
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
/*
* 3) Edge/Level determination is based on the 2nd character
* of the method name
- *
- * NOTE: Default GPE type is RUNTIME only. Later, if a _PRW object is
- * found that points to this GPE, the ACPI_GPE_CAN_WAKE flag is set.
*/
switch (name[1]) {
case 'L':
*/
if (walk_info->enable_this_gpe) {
- /* Ignore GPEs that can wake the system */
+ walk_info->count++;
+ gpe_device = walk_info->gpe_device;
- if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE) ||
- !acpi_gbl_leave_wake_gpes_disabled) {
- walk_info->count++;
- gpe_device = walk_info->gpe_device;
-
- if (gpe_device == acpi_gbl_fadt_gpe_device) {
- gpe_device = NULL;
- }
+ if (gpe_device == acpi_gbl_fadt_gpe_device) {
+ gpe_device = NULL;
+ }
- status = acpi_enable_gpe(gpe_device, gpe_number);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Could not enable GPE 0x%02X",
- gpe_number));
- }
+ status = acpi_enable_gpe(gpe_device, gpe_number);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Could not enable GPE 0x%02X",
+ gpe_number));
}
}
name, gpe_number));
return_ACPI_STATUS(AE_OK);
}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ev_match_prw_and_gpe
- *
- * PARAMETERS: Callback from walk_namespace
- *
- * RETURN: Status. NOTE: We ignore errors so that the _PRW walk is
- * not aborted on a single _PRW failure.
- *
- * DESCRIPTION: Called from acpi_walk_namespace. Expects each object to be a
- * Device. Run the _PRW method. If present, extract the GPE
- * number and mark the GPE as a CAN_WAKE GPE. Allows a
- * per-owner_id execution if execute_by_owner_id is TRUE in the
- * walk_info parameter block.
- *
- * If walk_info->execute_by_owner_id is TRUE, we only execute _PRWs with that
- * owner.
- * If walk_info->gpe_device is NULL, we execute every _PRW found. Otherwise,
- * we only execute _PRWs that refer to the input gpe_device.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
- u32 level, void *context, void **return_value)
-{
- struct acpi_gpe_walk_info *walk_info =
- ACPI_CAST_PTR(struct acpi_gpe_walk_info, context);
- struct acpi_namespace_node *gpe_device;
- struct acpi_gpe_block_info *gpe_block;
- struct acpi_namespace_node *target_gpe_device;
- struct acpi_namespace_node *prw_node;
- struct acpi_gpe_event_info *gpe_event_info;
- union acpi_operand_object *pkg_desc;
- union acpi_operand_object *obj_desc;
- u32 gpe_number;
- acpi_status status;
-
- ACPI_FUNCTION_TRACE(ev_match_prw_and_gpe);
-
- /* Check for a _PRW method under this device */
-
- status = acpi_ns_get_node(obj_handle, METHOD_NAME__PRW,
- ACPI_NS_NO_UPSEARCH, &prw_node);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(AE_OK);
- }
-
- /* Check if requested owner_id matches this owner_id */
-
- if ((walk_info->execute_by_owner_id) &&
- (prw_node->owner_id != walk_info->owner_id)) {
- return_ACPI_STATUS(AE_OK);
- }
-
- /* Execute the _PRW */
-
- status = acpi_ut_evaluate_object(prw_node, NULL,
- ACPI_BTYPE_PACKAGE, &pkg_desc);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(AE_OK);
- }
-
- /* The returned _PRW package must have at least two elements */
-
- if (pkg_desc->package.count < 2) {
- goto cleanup;
- }
-
- /* Extract pointers from the input context */
-
- gpe_device = walk_info->gpe_device;
- gpe_block = walk_info->gpe_block;
-
- /*
- * The _PRW object must return a package, we are only interested
- * in the first element
- */
- obj_desc = pkg_desc->package.elements[0];
-
- if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
-
- /* Use FADT-defined GPE device (from definition of _PRW) */
-
- target_gpe_device = NULL;
- if (gpe_device) {
- target_gpe_device = acpi_gbl_fadt_gpe_device;
- }
-
- /* Integer is the GPE number in the FADT described GPE blocks */
-
- gpe_number = (u32)obj_desc->integer.value;
- } else if (obj_desc->common.type == ACPI_TYPE_PACKAGE) {
-
- /* Package contains a GPE reference and GPE number within a GPE block */
-
- if ((obj_desc->package.count < 2) ||
- ((obj_desc->package.elements[0])->common.type !=
- ACPI_TYPE_LOCAL_REFERENCE) ||
- ((obj_desc->package.elements[1])->common.type !=
- ACPI_TYPE_INTEGER)) {
- goto cleanup;
- }
-
- /* Get GPE block reference and decode */
-
- target_gpe_device =
- obj_desc->package.elements[0]->reference.node;
- gpe_number = (u32)obj_desc->package.elements[1]->integer.value;
- } else {
- /* Unknown type, just ignore it */
-
- goto cleanup;
- }
-
- /* Get the gpe_event_info for this GPE */
-
- if (gpe_device) {
- /*
- * Is this GPE within this block?
- *
- * TRUE if and only if these conditions are true:
- * 1) The GPE devices match.
- * 2) The GPE index(number) is within the range of the Gpe Block
- * associated with the GPE device.
- */
- if (gpe_device != target_gpe_device) {
- goto cleanup;
- }
-
- gpe_event_info =
- acpi_ev_low_get_gpe_info(gpe_number, gpe_block);
- } else {
- /* gpe_device is NULL, just match the target_device and gpe_number */
-
- gpe_event_info =
- acpi_ev_get_gpe_event_info(target_gpe_device, gpe_number);
- }
-
- if (gpe_event_info) {
- if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
-
- /* This GPE can wake the system */
-
- gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
- walk_info->count++;
- }
- }
-
- cleanup:
- acpi_ut_remove_reference(pkg_desc);
- return_ACPI_STATUS(AE_OK);
-}
}
ACPI_EXPORT_SYMBOL(acpi_disable_gpe)
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_gpe_can_wake
+ *
+ * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
+ * gpe_number - GPE level within the GPE block
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Set the ACPI_GPE_CAN_WAKE flag for the given GPE. If the GPE
+ * has a corresponding method and is currently enabled, disable it
+ * (GPEs with corresponding methods are enabled unconditionally
+ * during initialization, but GPEs that can wake up are expected
+ * to be initially disabled).
+ *
+ ******************************************************************************/
+acpi_status acpi_gpe_can_wake(acpi_handle gpe_device, u32 gpe_number)
+{
+ acpi_status status = AE_OK;
+ struct acpi_gpe_event_info *gpe_event_info;
+ acpi_cpu_flags flags;
+ u8 disable = 0;
+
+ ACPI_FUNCTION_TRACE(acpi_gpe_can_wake);
+
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
+ /* Ensure that we have a valid GPE number */
+
+ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
+ if (!gpe_event_info) {
+ status = AE_BAD_PARAMETER;
+ goto unlock_and_exit;
+ }
+
+ if (gpe_event_info->flags & ACPI_GPE_CAN_WAKE) {
+ goto unlock_and_exit;
+ }
+
+ gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
+ disable = (gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD)
+ && gpe_event_info->runtime_count;
+
+unlock_and_exit:
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+
+ if (disable)
+ status = acpi_disable_gpe(gpe_device, gpe_number);
+
+ return_ACPI_STATUS(status);
+}
+ACPI_EXPORT_SYMBOL(acpi_gpe_can_wake)
+
/*******************************************************************************
*
* FUNCTION: acpi_disable_event
obj_desc->device.gpe_block = gpe_block;
- /* Run the _PRW methods and enable the runtime GPEs in the new block */
+ /* Enable the runtime GPEs in the new block */
status = acpi_ev_initialize_gpe_block(node, gpe_block);
git://bbs.cooldavid.org / net-next-2.6.git / commitdiff