*****************************************************************************/
/*
- * Copyright (C) 2000 - 2004, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include <acpi/acnamesp.h>
#define _COMPONENT ACPI_EVENTS
- ACPI_MODULE_NAME ("evgpe")
+ACPI_MODULE_NAME("evgpe")
+/* Local prototypes */
+static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context);
+
+/*******************************************************************************
+ *
+ * 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);
+}
/*******************************************************************************
*
*
******************************************************************************/
-struct acpi_gpe_event_info *
-acpi_ev_get_gpe_event_info (
- acpi_handle gpe_device,
- u32 gpe_number)
+struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
+ u32 gpe_number)
{
- union acpi_operand_object *obj_desc;
- struct acpi_gpe_block_info *gpe_block;
- acpi_native_uint i;
-
-
- ACPI_FUNCTION_ENTRY ();
+ union acpi_operand_object *obj_desc;
+ struct acpi_gpe_block_info *gpe_block;
+ acpi_native_uint i;
+ ACPI_FUNCTION_ENTRY();
/* A NULL gpe_block means use the FADT-defined GPE block(s) */
if (!gpe_device) {
+
/* Examine GPE Block 0 and 1 (These blocks are permanent) */
for (i = 0; i < ACPI_MAX_GPE_BLOCKS; i++) {
gpe_block = acpi_gbl_gpe_fadt_blocks[i];
if (gpe_block) {
- if ((gpe_number >= gpe_block->block_base_number) &&
- (gpe_number < gpe_block->block_base_number + (gpe_block->register_count * 8))) {
- return (&gpe_block->event_info[gpe_number - gpe_block->block_base_number]);
+ if ((gpe_number >= gpe_block->block_base_number)
+ && (gpe_number <
+ gpe_block->block_base_number +
+ (gpe_block->register_count * 8))) {
+ return (&gpe_block->
+ event_info[gpe_number -
+ gpe_block->
+ block_base_number]);
}
}
}
/* A Non-NULL gpe_device means this is a GPE Block Device */
- obj_desc = acpi_ns_get_attached_object ((struct acpi_namespace_node *) gpe_device);
- if (!obj_desc ||
- !obj_desc->device.gpe_block) {
+ obj_desc =
+ acpi_ns_get_attached_object((struct acpi_namespace_node *)
+ gpe_device);
+ if (!obj_desc || !obj_desc->device.gpe_block) {
return (NULL);
}
gpe_block = obj_desc->device.gpe_block;
if ((gpe_number >= gpe_block->block_base_number) &&
- (gpe_number < gpe_block->block_base_number + (gpe_block->register_count * 8))) {
- return (&gpe_block->event_info[gpe_number - gpe_block->block_base_number]);
+ (gpe_number <
+ gpe_block->block_base_number + (gpe_block->register_count * 8))) {
+ return (&gpe_block->
+ event_info[gpe_number - gpe_block->block_base_number]);
}
return (NULL);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ev_gpe_detect
*
******************************************************************************/
-u32
-acpi_ev_gpe_detect (
- struct acpi_gpe_xrupt_info *gpe_xrupt_list)
+u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
{
- u32 int_status = ACPI_INTERRUPT_NOT_HANDLED;
- u8 enabled_status_byte;
- struct acpi_gpe_register_info *gpe_register_info;
- u32 in_value;
- acpi_status status;
- struct acpi_gpe_block_info *gpe_block;
- u32 i;
- u32 j;
-
-
- ACPI_FUNCTION_NAME ("ev_gpe_detect");
+ acpi_status status;
+ struct acpi_gpe_block_info *gpe_block;
+ struct acpi_gpe_register_info *gpe_register_info;
+ u32 int_status = ACPI_INTERRUPT_NOT_HANDLED;
+ u8 enabled_status_byte;
+ u32 status_reg;
+ u32 enable_reg;
+ acpi_cpu_flags flags;
+ acpi_native_uint i;
+ acpi_native_uint j;
+
+ ACPI_FUNCTION_NAME(ev_gpe_detect);
/* Check for the case where there are no GPEs */
return (int_status);
}
+ /*
+ * We need to obtain the GPE lock for both the data structs and registers
+ * Note: Not necessary to obtain the hardware lock, since the GPE registers
+ * are owned by the gpe_lock.
+ */
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
/* Examine all GPE blocks attached to this interrupt level */
- acpi_os_acquire_lock (acpi_gbl_gpe_lock, ACPI_ISR);
gpe_block = gpe_xrupt_list->gpe_block_list_head;
while (gpe_block) {
/*
* Find all currently active GP events.
*/
for (i = 0; i < gpe_block->register_count; i++) {
+
/* Get the next status/enable pair */
gpe_register_info = &gpe_block->register_info[i];
/* Read the Status Register */
- status = acpi_hw_low_level_read (ACPI_GPE_REGISTER_WIDTH, &in_value,
- &gpe_register_info->status_address);
- gpe_register_info->status = (u8) in_value;
- if (ACPI_FAILURE (status)) {
+ status =
+ acpi_hw_low_level_read(ACPI_GPE_REGISTER_WIDTH,
+ &status_reg,
+ &gpe_register_info->
+ status_address);
+ if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
/* Read the Enable Register */
- status = acpi_hw_low_level_read (ACPI_GPE_REGISTER_WIDTH, &in_value,
- &gpe_register_info->enable_address);
- gpe_register_info->enable = (u8) in_value;
- if (ACPI_FAILURE (status)) {
+ status =
+ acpi_hw_low_level_read(ACPI_GPE_REGISTER_WIDTH,
+ &enable_reg,
+ &gpe_register_info->
+ enable_address);
+ 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_DEBUG_PRINT((ACPI_DB_INTERRUPTS,
+ "Read GPE Register at GPE%X: Status=%02X, Enable=%02X\n",
+ gpe_register_info->base_gpe_number,
+ status_reg, enable_reg));
- /* First check if there is anything active at all in this register */
+ /* 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 */
continue;
/* Now look at the individual GPEs in this byte register */
for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
+
/* Examine one GPE bit */
- if (enabled_status_byte & acpi_gbl_decode_to8bit[j]) {
+ if (enabled_status_byte &
+ acpi_gbl_decode_to8bit[j]) {
/*
* Found an active GPE. Dispatch the event to a handler
* or method.
*/
- int_status |= acpi_ev_gpe_dispatch (
- &gpe_block->event_info[(i * ACPI_GPE_REGISTER_WIDTH) + j],
- j + gpe_register_info->base_gpe_number);
+ int_status |=
+ acpi_ev_gpe_dispatch(&gpe_block->
+ event_info[(i *
+ ACPI_GPE_REGISTER_WIDTH)
+ +
+ j],
+ (u32) j +
+ gpe_register_info->
+ base_gpe_number);
}
}
}
gpe_block = gpe_block->next;
}
-unlock_and_exit:
+ unlock_and_exit:
- acpi_os_release_lock (acpi_gbl_gpe_lock, ACPI_ISR);
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
return (int_status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ev_asynch_execute_gpe_method
*
* RETURN: None
*
- * DESCRIPTION: Perform the actual execution of a GPE control method. This
- * function is called from an invocation of acpi_os_queue_for_execution
- * (and therefore does NOT execute at interrupt level) so that
+ * DESCRIPTION: Perform the actual execution of a GPE control method. This
+ * function is called from an invocation of acpi_os_execute and
+ * therefore does NOT execute at interrupt level - so that
* the control method itself is not executed in the context of
* an interrupt handler.
*
******************************************************************************/
-static void ACPI_SYSTEM_XFACE
-acpi_ev_asynch_execute_gpe_method (
- void *context)
+static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
{
- struct acpi_gpe_event_info *gpe_event_info = (void *) context;
- u32 gpe_number = 0;
- acpi_status status;
- struct acpi_gpe_event_info local_gpe_event_info;
+ struct acpi_gpe_event_info *gpe_event_info = (void *)context;
+ acpi_status status;
+ struct acpi_gpe_event_info local_gpe_event_info;
+ struct acpi_evaluate_info *info;
+ ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
- ACPI_FUNCTION_TRACE ("ev_asynch_execute_gpe_method");
-
-
- status = acpi_ut_acquire_mutex (ACPI_MTX_EVENTS);
- if (ACPI_FAILURE (status)) {
+ status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
+ if (ACPI_FAILURE(status)) {
return_VOID;
}
/* Must revalidate the gpe_number/gpe_block */
- if (!acpi_ev_valid_gpe_event (gpe_event_info)) {
- status = acpi_ut_release_mutex (ACPI_MTX_EVENTS);
+ if (!acpi_ev_valid_gpe_event(gpe_event_info)) {
+ status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
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.
*/
- ACPI_MEMCPY (&local_gpe_event_info, gpe_event_info, sizeof (struct acpi_gpe_event_info));
+ ACPI_MEMCPY(&local_gpe_event_info, gpe_event_info,
+ sizeof(struct acpi_gpe_event_info));
- status = acpi_ut_release_mutex (ACPI_MTX_EVENTS);
- if (ACPI_FAILURE (status)) {
+ status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
+ if (ACPI_FAILURE(status)) {
return_VOID;
}
- if (local_gpe_event_info.method_node) {
- /*
- * Invoke the GPE Method (_Lxx, _Exx):
- * (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);
- if (ACPI_FAILURE (status)) {
- 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));
+ /*
+ * 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) {
+
+ /* Allocate the evaluation information block */
+
+ info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+ if (!info) {
+ status = AE_NO_MEMORY;
+ } else {
+ /*
+ * Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx
+ * control method that corresponds to this GPE
+ */
+ info->prefix_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;
+ info->flags = ACPI_IGNORE_RETURN_VALUE;
+
+ status = acpi_ns_evaluate(info);
+ ACPI_FREE(info);
+ }
+
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "While evaluating GPE method [%4.4s]",
+ acpi_ut_get_node_name
+ (local_gpe_event_info.dispatch.
+ method_node)));
}
}
- if ((local_gpe_event_info.flags & ACPI_GPE_XRUPT_TYPE_MASK) == ACPI_GPE_LEVEL_TRIGGERED) {
+ 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)) {
+ status = acpi_hw_clear_gpe(&local_gpe_event_info);
+ if (ACPI_FAILURE(status)) {
return_VOID;
}
}
/* 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;
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ev_gpe_dispatch
*
- * PARAMETERS: gpe_event_info - info for this GPE
+ * PARAMETERS: gpe_event_info - Info for this GPE
* gpe_number - Number relative to the parent GPE block
*
* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
******************************************************************************/
u32
-acpi_ev_gpe_dispatch (
- struct acpi_gpe_event_info *gpe_event_info,
- u32 gpe_number)
+acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("ev_gpe_dispatch");
+ acpi_status status;
+ ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
/*
* If edge-triggered, clear the GPE status bit now. Note that
* level-triggered events are cleared after the GPE is serviced.
*/
- if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) == ACPI_GPE_EDGE_TRIGGERED) {
- status = acpi_hw_clear_gpe (gpe_event_info);
- if (ACPI_FAILURE (status)) {
- ACPI_REPORT_ERROR (("acpi_ev_gpe_dispatch: Unable to clear GPE[%2X]\n",
- gpe_number));
- return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
+ if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
+ ACPI_GPE_EDGE_TRIGGERED) {
+ status = acpi_hw_clear_gpe(gpe_event_info);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Unable to clear GPE[%2X]",
+ gpe_number));
+ return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
}
+ /* 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. */
- if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) == ACPI_GPE_LEVEL_TRIGGERED) {
- status = acpi_hw_clear_gpe (gpe_event_info);
- if (ACPI_FAILURE (status)) {
- ACPI_REPORT_ERROR ((
- "acpi_ev_gpe_dispatch: Unable to clear GPE[%2X]\n",
- gpe_number));
- return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
+ if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
+ ACPI_GPE_LEVEL_TRIGGERED) {
+ status = acpi_hw_clear_gpe(gpe_event_info);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Unable to clear GPE[%2X]",
+ gpe_number));
+ return_UINT32(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);
- 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);
+ status = acpi_ev_disable_gpe(gpe_event_info);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Unable to disable GPE[%2X]",
+ gpe_number));
+ return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
/*
* Execute the method associated with the GPE
* NOTE: Level-triggered GPEs are cleared after the method completes.
*/
- if (ACPI_FAILURE (acpi_os_queue_for_execution (OSD_PRIORITY_GPE,
- acpi_ev_asynch_execute_gpe_method,
- gpe_event_info))) {
- ACPI_REPORT_ERROR ((
- "acpi_ev_gpe_dispatch: Unable to queue handler for GPE[%2X], event is disabled\n",
- gpe_number));
+ status = acpi_os_execute(OSL_GPE_HANDLER,
+ acpi_ev_asynch_execute_gpe_method,
+ gpe_event_info);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Unable to queue handler for GPE[%2X] - event disabled",
+ gpe_number));
}
- }
- else {
+ break;
+
+ default:
+
/* No handler or method to run! */
- ACPI_REPORT_ERROR ((
- "acpi_ev_gpe_dispatch: No handler or method for GPE[%2X], disabling event\n",
- gpe_number));
+ ACPI_ERROR((AE_INFO,
+ "No handler or method for GPE[%2X], disabling event",
+ gpe_number));
/*
* 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);
- 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);
+ status = acpi_ev_disable_gpe(gpe_event_info);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Unable to disable GPE[%2X]",
+ gpe_number));
+ return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
+ break;
}
- return_VALUE (ACPI_INTERRUPT_HANDLED);
+ return_UINT32(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 "DeviceWake"
+ * 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_INFO((AE_INFO,
+ "GPE %p was updated from wake/run to wake-only",
+ gpe_event_info));
+
+ /* This was a wake-only GPE */
+
+ return_ACPI_STATUS(AE_WAKE_ONLY_GPE);
+ }
+
+ return_ACPI_STATUS(AE_OK);
+}
+#endif
git://git.onelab.eu / linux-2.6.git / blobdiff