ACPI_MODULE_NAME ("evgpe")
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_set_gpe_type
+ *
+ * PARAMETERS: gpe_event_info - GPE to set
+ * Type - New type
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Sets the new type for the GPE (wake, run, or wake/run)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_set_gpe_type (
+ struct acpi_gpe_event_info *gpe_event_info,
+ u8 type)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ev_set_gpe_type");
+
+
+ /* Validate type and update register enable masks */
+
+ switch (type) {
+ case ACPI_GPE_TYPE_WAKE:
+ case ACPI_GPE_TYPE_RUNTIME:
+ case ACPI_GPE_TYPE_WAKE_RUN:
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /* Disable the GPE if currently enabled */
+
+ status = acpi_ev_disable_gpe (gpe_event_info);
+
+ /* Type was validated above */
+
+ gpe_event_info->flags &= ~ACPI_GPE_TYPE_MASK; /* Clear type bits */
+ gpe_event_info->flags |= type; /* Insert type */
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_update_gpe_enable_masks
+ *
+ * PARAMETERS: gpe_event_info - GPE to update
+ * Type - What to do: ACPI_GPE_DISABLE or
+ * ACPI_GPE_ENABLE
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Updates GPE register enable masks based on the GPE type
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_update_gpe_enable_masks (
+ struct acpi_gpe_event_info *gpe_event_info,
+ u8 type)
+{
+ struct acpi_gpe_register_info *gpe_register_info;
+ u8 register_bit;
+
+
+ ACPI_FUNCTION_TRACE ("ev_update_gpe_enable_masks");
+
+
+ gpe_register_info = gpe_event_info->register_info;
+ if (!gpe_register_info) {
+ return_ACPI_STATUS (AE_NOT_EXIST);
+ }
+ register_bit = gpe_event_info->register_bit;
+
+ /* 1) Disable case. Simply clear all enable bits */
+
+ if (type == ACPI_GPE_DISABLE) {
+ ACPI_CLEAR_BIT (gpe_register_info->enable_for_wake, register_bit);
+ ACPI_CLEAR_BIT (gpe_register_info->enable_for_run, register_bit);
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /* 2) Enable case. Set/Clear the appropriate enable bits */
+
+ switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) {
+ case ACPI_GPE_TYPE_WAKE:
+ ACPI_SET_BIT (gpe_register_info->enable_for_wake, register_bit);
+ ACPI_CLEAR_BIT (gpe_register_info->enable_for_run, register_bit);
+ break;
+
+ case ACPI_GPE_TYPE_RUNTIME:
+ ACPI_CLEAR_BIT (gpe_register_info->enable_for_wake, register_bit);
+ ACPI_SET_BIT (gpe_register_info->enable_for_run, register_bit);
+ break;
+
+ case ACPI_GPE_TYPE_WAKE_RUN:
+ ACPI_SET_BIT (gpe_register_info->enable_for_wake, register_bit);
+ ACPI_SET_BIT (gpe_register_info->enable_for_run, register_bit);
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_enable_gpe
+ *
+ * PARAMETERS: gpe_event_info - GPE to enable
+ * write_to_hardware - Enable now, or just mark data structs
+ * (WAKE GPEs should be deferred)
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Enable a GPE based on the GPE type
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_enable_gpe (
+ struct acpi_gpe_event_info *gpe_event_info,
+ u8 write_to_hardware)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ev_enable_gpe");
+
+
+ /* Make sure HW enable masks are updated */
+
+ status = acpi_ev_update_gpe_enable_masks (gpe_event_info, ACPI_GPE_ENABLE);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Mark wake-enabled or HW enable, or both */
+
+ switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) {
+ case ACPI_GPE_TYPE_WAKE:
+
+ ACPI_SET_BIT (gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
+ break;
+
+ case ACPI_GPE_TYPE_WAKE_RUN:
+
+ ACPI_SET_BIT (gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
+
+ /*lint -fallthrough */
+
+ case ACPI_GPE_TYPE_RUNTIME:
+
+ ACPI_SET_BIT (gpe_event_info->flags, ACPI_GPE_RUN_ENABLED);
+
+ if (write_to_hardware) {
+ /* Clear the GPE (of stale events), then enable it */
+
+ status = acpi_hw_clear_gpe (gpe_event_info);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Enable the requested runtime GPE */
+
+ status = acpi_hw_write_gpe_enable_reg (gpe_event_info);
+ }
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ev_disable_gpe
+ *
+ * PARAMETERS: gpe_event_info - GPE to disable
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Disable a GPE based on the GPE type
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_disable_gpe (
+ struct acpi_gpe_event_info *gpe_event_info)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ev_disable_gpe");
+
+
+ if (!(gpe_event_info->flags & ACPI_GPE_ENABLE_MASK)) {
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /* Make sure HW enable masks are updated */
+
+ status = acpi_ev_update_gpe_enable_masks (gpe_event_info, ACPI_GPE_DISABLE);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Mark wake-disabled or HW disable, or both */
+
+ switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) {
+ case ACPI_GPE_TYPE_WAKE:
+ ACPI_CLEAR_BIT (gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
+ break;
+
+ case ACPI_GPE_TYPE_WAKE_RUN:
+ ACPI_CLEAR_BIT (gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
+
+ /*lint -fallthrough */
+
+ case ACPI_GPE_TYPE_RUNTIME:
+
+ /* Disable the requested runtime GPE */
+
+ ACPI_CLEAR_BIT (gpe_event_info->flags, ACPI_GPE_RUN_ENABLED);
+ status = acpi_hw_write_gpe_enable_reg (gpe_event_info);
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+
+
/*******************************************************************************
*
* FUNCTION: acpi_ev_get_gpe_event_info
u32 int_status = ACPI_INTERRUPT_NOT_HANDLED;
u8 enabled_status_byte;
struct acpi_gpe_register_info *gpe_register_info;
- u32 in_value;
+ u32 status_reg;
+ u32 enable_reg;
acpi_status status;
struct acpi_gpe_block_info *gpe_block;
- u32 i;
- u32 j;
+ acpi_native_uint i;
+ acpi_native_uint j;
ACPI_FUNCTION_NAME ("ev_gpe_detect");
/* Read the Status Register */
- status = acpi_hw_low_level_read (ACPI_GPE_REGISTER_WIDTH, &in_value,
+ status = acpi_hw_low_level_read (ACPI_GPE_REGISTER_WIDTH, &status_reg,
&gpe_register_info->status_address);
- gpe_register_info->status = (u8) in_value;
if (ACPI_FAILURE (status)) {
goto unlock_and_exit;
}
/* Read the Enable Register */
- status = acpi_hw_low_level_read (ACPI_GPE_REGISTER_WIDTH, &in_value,
+ status = acpi_hw_low_level_read (ACPI_GPE_REGISTER_WIDTH, &enable_reg,
&gpe_register_info->enable_address);
- gpe_register_info->enable = (u8) in_value;
if (ACPI_FAILURE (status)) {
goto unlock_and_exit;
}
ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS,
"GPE pair: Status %8.8X%8.8X = %02X, Enable %8.8X%8.8X = %02X\n",
- ACPI_FORMAT_UINT64 (gpe_register_info->status_address.address),
- gpe_register_info->status,
- ACPI_FORMAT_UINT64 (gpe_register_info->enable_address.address),
- gpe_register_info->enable));
+ ACPI_FORMAT_UINT64 (
+ gpe_register_info->status_address.address),
+ status_reg,
+ ACPI_FORMAT_UINT64 (
+ gpe_register_info->enable_address.address),
+ enable_reg));
/* First check if there is anything active at all in this register */
- enabled_status_byte = (u8) (gpe_register_info->status &
- gpe_register_info->enable);
+ enabled_status_byte = (u8) (status_reg & enable_reg);
if (!enabled_status_byte) {
/* No active GPEs in this register, move on */
*/
int_status |= acpi_ev_gpe_dispatch (
&gpe_block->event_info[(i * ACPI_GPE_REGISTER_WIDTH) + j],
- j + gpe_register_info->base_gpe_number);
+ (u32) j + gpe_register_info->base_gpe_number);
}
}
}
u32 gpe_number = 0;
acpi_status status;
struct acpi_gpe_event_info local_gpe_event_info;
+ struct acpi_parameter_info info;
ACPI_FUNCTION_TRACE ("ev_asynch_execute_gpe_method");
return_VOID;
}
+ /* Set the GPE flags for return to enabled state */
+
+ (void) acpi_ev_enable_gpe (gpe_event_info, FALSE);
+
/*
* Take a snapshot of the GPE info for this level - we copy the
* info to prevent a race condition with remove_handler/remove_block.
return_VOID;
}
- if (local_gpe_event_info.method_node) {
+ /*
+ * Must check for control method type dispatch one more
+ * time to avoid race with ev_gpe_install_handler
+ */
+ if ((local_gpe_event_info.flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_METHOD) {
/*
- * Invoke the GPE Method (_Lxx, _Exx):
- * (Evaluate the _Lxx/_Exx control method that corresponds to this GPE.)
+ * Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx
+ * control method that corresponds to this GPE
*/
- status = acpi_ns_evaluate_by_handle (local_gpe_event_info.method_node, NULL, NULL);
+ info.node = local_gpe_event_info.dispatch.method_node;
+ info.parameters = ACPI_CAST_PTR (union acpi_operand_object *, gpe_event_info);
+ info.parameter_type = ACPI_PARAM_GPE;
+
+ status = acpi_ns_evaluate_by_handle (&info);
if (ACPI_FAILURE (status)) {
- ACPI_REPORT_ERROR (("%s while evaluating method [%4.4s] for GPE[%2X]\n",
+ ACPI_REPORT_ERROR ((
+ "%s while evaluating method [%4.4s] for GPE[%2X]\n",
acpi_format_exception (status),
- acpi_ut_get_node_name (local_gpe_event_info.method_node), gpe_number));
+ acpi_ut_get_node_name (local_gpe_event_info.dispatch.method_node),
+ gpe_number));
}
}
if ((local_gpe_event_info.flags & ACPI_GPE_XRUPT_TYPE_MASK) == ACPI_GPE_LEVEL_TRIGGERED) {
/*
- * GPE is level-triggered, we clear the GPE status bit after handling
- * the event.
+ * GPE is level-triggered, we clear the GPE status bit after
+ * handling the event.
*/
status = acpi_hw_clear_gpe (&local_gpe_event_info);
if (ACPI_FAILURE (status)) {
/* Enable this GPE */
- (void) acpi_hw_enable_gpe (&local_gpe_event_info);
+ (void) acpi_hw_write_gpe_enable_reg (&local_gpe_event_info);
return_VOID;
}
}
}
+ /* Save current system state */
+
+ if (acpi_gbl_system_awake_and_running) {
+ ACPI_SET_BIT (gpe_event_info->flags, ACPI_GPE_SYSTEM_RUNNING);
+ }
+ else {
+ ACPI_CLEAR_BIT (gpe_event_info->flags, ACPI_GPE_SYSTEM_RUNNING);
+ }
+
/*
* Dispatch the GPE to either an installed handler, or the control
* method associated with this GPE (_Lxx or _Exx).
* If there is neither a handler nor a method, we disable the level to
* prevent further events from coming in here.
*/
- if (gpe_event_info->handler) {
- /* Invoke the installed handler (at interrupt level) */
+ switch (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
+ case ACPI_GPE_DISPATCH_HANDLER:
- gpe_event_info->handler (gpe_event_info->context);
+ /*
+ * Invoke the installed handler (at interrupt level)
+ * Ignore return status for now. TBD: leave GPE disabled on error?
+ */
+ (void) gpe_event_info->dispatch.handler->address (
+ gpe_event_info->dispatch.handler->context);
/* It is now safe to clear level-triggered events. */
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
}
}
- }
- else if (gpe_event_info->method_node) {
+ break;
+
+ case ACPI_GPE_DISPATCH_METHOD:
+
/*
* Disable GPE, so it doesn't keep firing before the method has a
* chance to run.
*/
- status = acpi_hw_disable_gpe (gpe_event_info);
+ status = acpi_ev_disable_gpe (gpe_event_info);
if (ACPI_FAILURE (status)) {
ACPI_REPORT_ERROR ((
"acpi_ev_gpe_dispatch: Unable to disable GPE[%2X]\n",
"acpi_ev_gpe_dispatch: Unable to queue handler for GPE[%2X], event is disabled\n",
gpe_number));
}
- }
- else {
+ break;
+
+ default:
+
/* No handler or method to run! */
ACPI_REPORT_ERROR ((
* Disable the GPE. The GPE will remain disabled until the ACPI
* Core Subsystem is restarted, or a handler is installed.
*/
- status = acpi_hw_disable_gpe (gpe_event_info);
+ status = acpi_ev_disable_gpe (gpe_event_info);
if (ACPI_FAILURE (status)) {
ACPI_REPORT_ERROR ((
"acpi_ev_gpe_dispatch: Unable to disable GPE[%2X]\n",
gpe_number));
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
}
+ break;
}
return_VALUE (ACPI_INTERRUPT_HANDLED);
}
+
+#ifdef ACPI_GPE_NOTIFY_CHECK
+
+/*******************************************************************************
+ * TBD: NOT USED, PROTOTYPE ONLY AND WILL PROBABLY BE REMOVED
+ *
+ * FUNCTION: acpi_ev_check_for_wake_only_gpe
+ *
+ * PARAMETERS: gpe_event_info - info for this GPE
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Determine if a a GPE is "wake-only".
+ *
+ * Called from Notify() code in interpreter when a "device_wake"
+ * Notify comes in.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_check_for_wake_only_gpe (
+ struct acpi_gpe_event_info *gpe_event_info)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ev_check_for_wake_only_gpe");
+
+
+ if ((gpe_event_info) && /* Only >0 for _Lxx/_Exx */
+ ((gpe_event_info->flags & ACPI_GPE_SYSTEM_MASK) == ACPI_GPE_SYSTEM_RUNNING)) /* System state at GPE time */ {
+ /* This must be a wake-only GPE, disable it */
+
+ status = acpi_ev_disable_gpe (gpe_event_info);
+
+ /* Set GPE to wake-only. Do not change wake disabled/enabled status */
+
+ acpi_ev_set_gpe_type (gpe_event_info, ACPI_GPE_TYPE_WAKE);
+
+ ACPI_REPORT_INFO (("GPE %p was updated from wake/run to wake-only\n",
+ gpe_event_info));
+
+ /* This was a wake-only GPE */
+
+ return_ACPI_STATUS (AE_WAKE_ONLY_GPE);
+ }
+
+ return_ACPI_STATUS (AE_OK);
+}
+#endif
+
+
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