*****************************************************************************/
/*
- * Copyright (C) 2000 - 2010, Intel Corp.
+ * Copyright (C) 2000 - 2011, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include <acpi/acpi.h>
#include "accommon.h"
-#include "acevents.h"
-#include "acnamesp.h"
#include "actables.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evxfevnt")
-/* Local prototypes */
-static acpi_status
-acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block, void *context);
-
/*******************************************************************************
*
* FUNCTION: acpi_enable
ACPI_EXPORT_SYMBOL(acpi_enable_event)
-/*******************************************************************************
- *
- * FUNCTION: acpi_gpe_wakeup
- *
- * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
- * gpe_number - GPE level within the GPE block
- * Action - Enable or Disable
- *
- * RETURN: Status
- *
- * DESCRIPTION: Set or clear the GPE's wakeup enable mask bit.
- *
- ******************************************************************************/
-acpi_status acpi_gpe_wakeup(acpi_handle gpe_device, u32 gpe_number, u8 action)
-{
- acpi_status status = AE_OK;
- struct acpi_gpe_event_info *gpe_event_info;
- struct acpi_gpe_register_info *gpe_register_info;
- acpi_cpu_flags flags;
- u32 register_bit;
-
- ACPI_FUNCTION_TRACE(acpi_gpe_wakeup);
-
- 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 || !(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
- status = AE_BAD_PARAMETER;
- goto unlock_and_exit;
- }
-
- gpe_register_info = gpe_event_info->register_info;
- if (!gpe_register_info) {
- status = AE_NOT_EXIST;
- goto unlock_and_exit;
- }
-
- register_bit =
- acpi_hw_get_gpe_register_bit(gpe_event_info, gpe_register_info);
-
- /* Perform the action */
-
- switch (action) {
- case ACPI_GPE_ENABLE:
- ACPI_SET_BIT(gpe_register_info->enable_for_wake,
- (u8)register_bit);
- break;
-
- case ACPI_GPE_DISABLE:
- ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake,
- (u8)register_bit);
- break;
-
- default:
- ACPI_ERROR((AE_INFO, "%u, Invalid action", action));
- status = AE_BAD_PARAMETER;
- break;
- }
-
-unlock_and_exit:
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
- return_ACPI_STATUS(status);
-}
-
-ACPI_EXPORT_SYMBOL(acpi_gpe_wakeup)
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_enable_gpe
- *
- * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
- * gpe_number - GPE level within the GPE block
- *
- * RETURN: Status
- *
- * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is
- * hardware-enabled.
- *
- ******************************************************************************/
-acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
-{
- acpi_status status = AE_BAD_PARAMETER;
- struct acpi_gpe_event_info *gpe_event_info;
- acpi_cpu_flags flags;
-
- ACPI_FUNCTION_TRACE(acpi_enable_gpe);
-
- 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 = acpi_raw_enable_gpe(gpe_event_info);
- }
-
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
- return_ACPI_STATUS(status);
-}
-ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_disable_gpe
- *
- * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
- * gpe_number - GPE level within the GPE block
- *
- * RETURN: Status
- *
- * DESCRIPTION: Remove a reference to a GPE. When the last reference is
- * removed, only then is the GPE disabled (for runtime GPEs), or
- * the GPE mask bit disabled (for wake GPEs)
- *
- ******************************************************************************/
-acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
-{
- acpi_status status = AE_BAD_PARAMETER;
- struct acpi_gpe_event_info *gpe_event_info;
- acpi_cpu_flags flags;
-
- ACPI_FUNCTION_TRACE(acpi_disable_gpe);
-
- 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 = acpi_raw_disable_gpe(gpe_event_info) ;
- }
-
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
- return_ACPI_STATUS(status);
-}
-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;
-
- 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) {
- gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
- } else {
- status = AE_BAD_PARAMETER;
- }
-
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
- return_ACPI_STATUS(status);
-}
-ACPI_EXPORT_SYMBOL(acpi_gpe_can_wake)
-
/*******************************************************************************
*
* FUNCTION: acpi_disable_event
ACPI_EXPORT_SYMBOL(acpi_clear_event)
-/*******************************************************************************
- *
- * FUNCTION: acpi_clear_gpe
- *
- * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
- * gpe_number - GPE level within the GPE block
- *
- * RETURN: Status
- *
- * DESCRIPTION: Clear an ACPI event (general purpose)
- *
- ******************************************************************************/
-acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number)
-{
- acpi_status status = AE_OK;
- struct acpi_gpe_event_info *gpe_event_info;
- acpi_cpu_flags flags;
-
- ACPI_FUNCTION_TRACE(acpi_clear_gpe);
-
- 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;
- }
-
- status = acpi_hw_clear_gpe(gpe_event_info);
-
- unlock_and_exit:
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
- return_ACPI_STATUS(status);
-}
-
-ACPI_EXPORT_SYMBOL(acpi_clear_gpe)
/*******************************************************************************
*
* FUNCTION: acpi_get_event_status
}
ACPI_EXPORT_SYMBOL(acpi_get_event_status)
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_get_gpe_status
- *
- * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
- * gpe_number - GPE level within the GPE block
- * event_status - Where the current status of the event will
- * be returned
- *
- * RETURN: Status
- *
- * DESCRIPTION: Get status of an event (general purpose)
- *
- ******************************************************************************/
-acpi_status
-acpi_get_gpe_status(acpi_handle gpe_device,
- u32 gpe_number, acpi_event_status *event_status)
-{
- acpi_status status = AE_OK;
- struct acpi_gpe_event_info *gpe_event_info;
- acpi_cpu_flags flags;
-
- ACPI_FUNCTION_TRACE(acpi_get_gpe_status);
-
- 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;
- }
-
- /* Obtain status on the requested GPE number */
-
- status = acpi_hw_get_gpe_status(gpe_event_info, event_status);
-
- if (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)
- *event_status |= ACPI_EVENT_FLAG_HANDLE;
-
- unlock_and_exit:
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
- return_ACPI_STATUS(status);
-}
-
-ACPI_EXPORT_SYMBOL(acpi_get_gpe_status)
-/*******************************************************************************
- *
- * FUNCTION: acpi_install_gpe_block
- *
- * PARAMETERS: gpe_device - Handle to the parent GPE Block Device
- * gpe_block_address - Address and space_iD
- * register_count - Number of GPE register pairs in the block
- * interrupt_number - H/W interrupt for the block
- *
- * RETURN: Status
- *
- * DESCRIPTION: Create and Install a block of GPE registers
- *
- ******************************************************************************/
-acpi_status
-acpi_install_gpe_block(acpi_handle gpe_device,
- struct acpi_generic_address *gpe_block_address,
- u32 register_count, u32 interrupt_number)
-{
- acpi_status status = AE_OK;
- union acpi_operand_object *obj_desc;
- struct acpi_namespace_node *node;
- struct acpi_gpe_block_info *gpe_block;
-
- ACPI_FUNCTION_TRACE(acpi_install_gpe_block);
-
- if ((!gpe_device) || (!gpe_block_address) || (!register_count)) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
-
- node = acpi_ns_validate_handle(gpe_device);
- if (!node) {
- status = AE_BAD_PARAMETER;
- goto unlock_and_exit;
- }
-
- /*
- * For user-installed GPE Block Devices, the gpe_block_base_number
- * is always zero
- */
- status =
- acpi_ev_create_gpe_block(node, gpe_block_address, register_count, 0,
- interrupt_number, &gpe_block);
- if (ACPI_FAILURE(status)) {
- goto unlock_and_exit;
- }
-
- /* Install block in the device_object attached to the node */
-
- obj_desc = acpi_ns_get_attached_object(node);
- if (!obj_desc) {
-
- /*
- * No object, create a new one (Device nodes do not always have
- * an attached object)
- */
- obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_DEVICE);
- if (!obj_desc) {
- status = AE_NO_MEMORY;
- goto unlock_and_exit;
- }
-
- status =
- acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_DEVICE);
-
- /* Remove local reference to the object */
-
- acpi_ut_remove_reference(obj_desc);
-
- if (ACPI_FAILURE(status)) {
- goto unlock_and_exit;
- }
- }
-
- /* Now install the GPE block in the device_object */
-
- obj_desc->device.gpe_block = gpe_block;
-
- unlock_and_exit:
- (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS(status);
-}
-
-ACPI_EXPORT_SYMBOL(acpi_install_gpe_block)
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_remove_gpe_block
- *
- * PARAMETERS: gpe_device - Handle to the parent GPE Block Device
- *
- * RETURN: Status
- *
- * DESCRIPTION: Remove a previously installed block of GPE registers
- *
- ******************************************************************************/
-acpi_status acpi_remove_gpe_block(acpi_handle gpe_device)
-{
- union acpi_operand_object *obj_desc;
- acpi_status status;
- struct acpi_namespace_node *node;
-
- ACPI_FUNCTION_TRACE(acpi_remove_gpe_block);
-
- if (!gpe_device) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
-
- node = acpi_ns_validate_handle(gpe_device);
- if (!node) {
- status = AE_BAD_PARAMETER;
- goto unlock_and_exit;
- }
-
- /* Get the device_object attached to the node */
-
- obj_desc = acpi_ns_get_attached_object(node);
- if (!obj_desc || !obj_desc->device.gpe_block) {
- return_ACPI_STATUS(AE_NULL_OBJECT);
- }
-
- /* Delete the GPE block (but not the device_object) */
-
- status = acpi_ev_delete_gpe_block(obj_desc->device.gpe_block);
- if (ACPI_SUCCESS(status)) {
- obj_desc->device.gpe_block = NULL;
- }
-
- unlock_and_exit:
- (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS(status);
-}
-
-ACPI_EXPORT_SYMBOL(acpi_remove_gpe_block)
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_get_gpe_device
- *
- * PARAMETERS: Index - System GPE index (0-current_gpe_count)
- * gpe_device - Where the parent GPE Device is returned
- *
- * RETURN: Status
- *
- * DESCRIPTION: Obtain the GPE device associated with the input index. A NULL
- * gpe device indicates that the gpe number is contained in one of
- * the FADT-defined gpe blocks. Otherwise, the GPE block device.
- *
- ******************************************************************************/
-acpi_status
-acpi_get_gpe_device(u32 index, acpi_handle *gpe_device)
-{
- struct acpi_gpe_device_info info;
- acpi_status status;
-
- ACPI_FUNCTION_TRACE(acpi_get_gpe_device);
-
- if (!gpe_device) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- if (index >= acpi_current_gpe_count) {
- return_ACPI_STATUS(AE_NOT_EXIST);
- }
-
- /* Setup and walk the GPE list */
-
- info.index = index;
- info.status = AE_NOT_EXIST;
- info.gpe_device = NULL;
- info.next_block_base_index = 0;
-
- status = acpi_ev_walk_gpe_list(acpi_ev_get_gpe_device, &info);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- *gpe_device = info.gpe_device;
- return_ACPI_STATUS(info.status);
-}
-
-ACPI_EXPORT_SYMBOL(acpi_get_gpe_device)
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ev_get_gpe_device
- *
- * PARAMETERS: GPE_WALK_CALLBACK
- *
- * RETURN: Status
- *
- * DESCRIPTION: Matches the input GPE index (0-current_gpe_count) with a GPE
- * block device. NULL if the GPE is one of the FADT-defined GPEs.
- *
- ******************************************************************************/
-static acpi_status
-acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block, void *context)
-{
- struct acpi_gpe_device_info *info = context;
-
- /* Increment Index by the number of GPEs in this block */
-
- info->next_block_base_index += gpe_block->gpe_count;
-
- if (info->index < info->next_block_base_index) {
- /*
- * The GPE index is within this block, get the node. Leave the node
- * NULL for the FADT-defined GPEs
- */
- if ((gpe_block->node)->type == ACPI_TYPE_DEVICE) {
- info->gpe_device = gpe_block->node;
- }
-
- info->status = AE_OK;
- return (AE_CTRL_END);
- }
-
- return (AE_OK);
-}
-
-/******************************************************************************
- *
- * FUNCTION: acpi_disable_all_gpes
- *
- * PARAMETERS: None
- *
- * RETURN: Status
- *
- * DESCRIPTION: Disable and clear all GPEs in all GPE blocks
- *
- ******************************************************************************/
-
-acpi_status acpi_disable_all_gpes(void)
-{
- acpi_status status;
-
- ACPI_FUNCTION_TRACE(acpi_disable_all_gpes);
-
- status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- status = acpi_hw_disable_all_gpes();
- (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
-
- return_ACPI_STATUS(status);
-}
-
-/******************************************************************************
- *
- * FUNCTION: acpi_enable_all_runtime_gpes
- *
- * PARAMETERS: None
- *
- * RETURN: Status
- *
- * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
- *
- ******************************************************************************/
-
-acpi_status acpi_enable_all_runtime_gpes(void)
-{
- acpi_status status;
-
- ACPI_FUNCTION_TRACE(acpi_enable_all_runtime_gpes);
-
- status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- status = acpi_hw_enable_all_runtime_gpes();
- (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
-
- return_ACPI_STATUS(status);
-}
-
-/******************************************************************************
- *
- * FUNCTION: acpi_update_gpes
- *
- * PARAMETERS: None
- *
- * RETURN: None
- *
- * DESCRIPTION: Enable all GPEs that have associated _Lxx or _Exx methods and
- * are not pointed to by any device _PRW methods indicating that
- * these GPEs are generally intended for system or device wakeup
- * (such GPEs have to be enabled directly when the devices whose
- * _PRW methods point to them are set up for wakeup signaling).
- *
- ******************************************************************************/
-
-acpi_status acpi_update_gpes(void)
-{
- acpi_status status;
-
- ACPI_FUNCTION_TRACE(acpi_update_gpes);
-
- status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- } else if (acpi_all_gpes_initialized) {
- goto unlock;
- }
-
- status = acpi_ev_walk_gpe_list(acpi_ev_initialize_gpe_block, NULL);
- if (ACPI_SUCCESS(status)) {
- acpi_all_gpes_initialized = TRUE;
- }
-
-unlock:
- (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
-
- return_ACPI_STATUS(status);
-}
projects / mv-sheeva.git / blobdiff