@@ -14,7 +14,7 @@ acpi-y := dsfield.o dsmthdat.o dsopcode.o dswexec.o dswscope.o \
acpi-y += evevent.o evregion.o evsci.o evxfevnt.o \
evmisc.o evrgnini.o evxface.o evxfregn.o \
- evgpe.o evgpeblk.o evgpeinit.o evgpeutil.o
+ evgpe.o evgpeblk.o evgpeinit.o evgpeutil.o evxfgpe.o
acpi-y += exconfig.o exfield.o exnames.o exoparg6.o exresolv.o exstorob.o\
exconvrt.o exfldio.o exoparg1.o exprep.o exresop.o exsystem.o\
@@ -138,6 +138,10 @@ acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context);
u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info);
+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_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number);
acpi_status acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt);
@@ -154,6 +154,45 @@ u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info)
/*******************************************************************************
*
+ * 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.
+ *
+ ******************************************************************************/
+
+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_ev_get_gpe_xrupt_block
*
* PARAMETERS: interrupt_number - Interrupt for a GPE block
@@ -43,18 +43,11 @@
#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
@@ -213,185 +206,6 @@ 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
*
* PARAMETERS: Event - The fixed eventto be enabled
@@ -483,44 +297,6 @@ 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
*
* PARAMETERS: Event - The fixed event
@@ -575,379 +351,3 @@ acpi_status acpi_get_event_status(u32 event, acpi_event_status * 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);
-}
new file mode 100644
@@ -0,0 +1,610 @@
+/******************************************************************************
+ *
+ * Module Name: evxfgpe - External Interfaces for General Purpose Events (GPEs)
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2010, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acevents.h"
+#include "acnamesp.h"
+
+#define _COMPONENT ACPI_EVENTS
+ACPI_MODULE_NAME("evxfgpe")
+
+/******************************************************************************
+ *
+ * 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);
+}
+
+/*******************************************************************************
+ *
+ * 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_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_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_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_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_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)