bc53515413
* 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: ACPI: replace acpi_integer by u64 ACPICA: Update version to 20100121. ACPICA: Remove unused uint32_struct type ACPICA: Disassembler: Remove obsolete "Integer64" field in parse object ACPICA: Remove obsolete ACPI_INTEGER (acpi_integer) type ACPICA: Predefined name repair: fix NULL package elements ACPICA: AcpiGetDevices: Eliminate unnecessary _STA calls ACPICA: Update all ACPICA copyrights and signons to 2010 ACPICA: Update for new gcc-4 warning options
917 lines
24 KiB
C
917 lines
24 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* 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"
|
|
#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
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Transfers the system into ACPI mode.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_enable(void)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_enable);
|
|
|
|
/* ACPI tables must be present */
|
|
|
|
if (!acpi_tb_tables_loaded()) {
|
|
return_ACPI_STATUS(AE_NO_ACPI_TABLES);
|
|
}
|
|
|
|
/* Check current mode */
|
|
|
|
if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
|
|
"System is already in ACPI mode\n"));
|
|
} else {
|
|
/* Transition to ACPI mode */
|
|
|
|
status = acpi_hw_set_mode(ACPI_SYS_MODE_ACPI);
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Could not transition to ACPI mode"));
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
|
|
"Transition to ACPI mode successful\n"));
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_enable)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_disable
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_disable(void)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_disable);
|
|
|
|
if (acpi_hw_get_mode() == ACPI_SYS_MODE_LEGACY) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
|
|
"System is already in legacy (non-ACPI) mode\n"));
|
|
} else {
|
|
/* Transition to LEGACY mode */
|
|
|
|
status = acpi_hw_set_mode(ACPI_SYS_MODE_LEGACY);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Could not exit ACPI mode to legacy mode"));
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI mode disabled\n"));
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_disable)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_enable_event
|
|
*
|
|
* PARAMETERS: Event - The fixed eventto be enabled
|
|
* Flags - Reserved
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Enable an ACPI event (fixed)
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_enable_event(u32 event, u32 flags)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
u32 value;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_enable_event);
|
|
|
|
/* Decode the Fixed Event */
|
|
|
|
if (event > ACPI_EVENT_MAX) {
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Enable the requested fixed event (by writing a one to the enable
|
|
* register bit)
|
|
*/
|
|
status =
|
|
acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
|
|
enable_register_id, ACPI_ENABLE_EVENT);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Make sure that the hardware responded */
|
|
|
|
status =
|
|
acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
|
|
enable_register_id, &value);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
if (value != 1) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Could not enable %s event",
|
|
acpi_ut_get_event_name(event)));
|
|
return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_enable_event)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_set_gpe
|
|
*
|
|
* PARAMETERS: gpe_device - Parent GPE Device
|
|
* gpe_number - GPE level within the GPE block
|
|
* action - Enable or disable
|
|
* Called from ISR or not
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Enable or disable an ACPI event (general purpose)
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_set_gpe(acpi_handle gpe_device, u32 gpe_number, u8 action)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
acpi_cpu_flags flags;
|
|
struct acpi_gpe_event_info *gpe_event_info;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_set_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;
|
|
}
|
|
|
|
/* Perform the action */
|
|
|
|
switch (action) {
|
|
case ACPI_GPE_ENABLE:
|
|
status = acpi_ev_enable_gpe(gpe_event_info);
|
|
break;
|
|
|
|
case ACPI_GPE_DISABLE:
|
|
status = acpi_ev_disable_gpe(gpe_event_info);
|
|
break;
|
|
|
|
default:
|
|
ACPI_ERROR((AE_INFO, "Invalid action\n"));
|
|
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_set_gpe)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_enable_gpe
|
|
*
|
|
* PARAMETERS: gpe_device - Parent GPE Device
|
|
* gpe_number - GPE level within the GPE block
|
|
* type - Purpose the GPE will be used for
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Take a reference to a GPE and enable it if necessary
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 type)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
acpi_cpu_flags flags;
|
|
struct acpi_gpe_event_info *gpe_event_info;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_enable_gpe);
|
|
|
|
if (type & ~ACPI_GPE_TYPE_WAKE_RUN)
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
|
|
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 (type & ACPI_GPE_TYPE_RUNTIME) {
|
|
if (++gpe_event_info->runtime_count == 1) {
|
|
status = acpi_ev_enable_gpe(gpe_event_info);
|
|
if (ACPI_FAILURE(status))
|
|
gpe_event_info->runtime_count--;
|
|
}
|
|
}
|
|
|
|
if (type & ACPI_GPE_TYPE_WAKE) {
|
|
if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
|
|
status = AE_BAD_PARAMETER;
|
|
goto unlock_and_exit;
|
|
}
|
|
|
|
/*
|
|
* Wake-up GPEs are only enabled right prior to putting the
|
|
* system into a sleep state.
|
|
*/
|
|
if (++gpe_event_info->wakeup_count == 1)
|
|
acpi_ev_update_gpe_enable_masks(gpe_event_info);
|
|
}
|
|
|
|
unlock_and_exit:
|
|
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
|
|
* gpe_number - GPE level within the GPE block
|
|
* type - Purpose the GPE won't be used for any more
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Release a reference to a GPE and disable it if necessary
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 type)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
acpi_cpu_flags flags;
|
|
struct acpi_gpe_event_info *gpe_event_info;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_disable_gpe);
|
|
|
|
if (type & ~ACPI_GPE_TYPE_WAKE_RUN)
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
|
|
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 ((type & ACPI_GPE_TYPE_RUNTIME) && gpe_event_info->runtime_count) {
|
|
if (--gpe_event_info->runtime_count == 0)
|
|
status = acpi_ev_disable_gpe(gpe_event_info);
|
|
}
|
|
|
|
if ((type & ACPI_GPE_TYPE_WAKE) && gpe_event_info->wakeup_count) {
|
|
/*
|
|
* Wake-up GPEs are not enabled after leaving system sleep
|
|
* states, so we don't need to disable them here.
|
|
*/
|
|
if (--gpe_event_info->wakeup_count == 0)
|
|
acpi_ev_update_gpe_enable_masks(gpe_event_info);
|
|
}
|
|
|
|
unlock_and_exit:
|
|
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
ACPI_EXPORT_SYMBOL(acpi_disable_gpe)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_disable_event
|
|
*
|
|
* PARAMETERS: Event - The fixed eventto be enabled
|
|
* Flags - Reserved
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Disable an ACPI event (fixed)
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_disable_event(u32 event, u32 flags)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
u32 value;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_disable_event);
|
|
|
|
/* Decode the Fixed Event */
|
|
|
|
if (event > ACPI_EVENT_MAX) {
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Disable the requested fixed event (by writing a zero to the enable
|
|
* register bit)
|
|
*/
|
|
status =
|
|
acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
|
|
enable_register_id, ACPI_DISABLE_EVENT);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
status =
|
|
acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
|
|
enable_register_id, &value);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
if (value != 0) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Could not disable %s events",
|
|
acpi_ut_get_event_name(event)));
|
|
return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_disable_event)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_clear_event
|
|
*
|
|
* PARAMETERS: Event - The fixed event to be cleared
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Clear an ACPI event (fixed)
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_clear_event(u32 event)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_clear_event);
|
|
|
|
/* Decode the Fixed Event */
|
|
|
|
if (event > ACPI_EVENT_MAX) {
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Clear the requested fixed event (By writing a one to the status
|
|
* register bit)
|
|
*/
|
|
status =
|
|
acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
|
|
status_register_id, ACPI_CLEAR_STATUS);
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_clear_event)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_clear_gpe
|
|
*
|
|
* PARAMETERS: gpe_device - Parent GPE Device
|
|
* gpe_number - GPE level within the GPE block
|
|
* Flags - Called from an ISR or not
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Clear an ACPI event (general purpose)
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
struct acpi_gpe_event_info *gpe_event_info;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_clear_gpe);
|
|
|
|
/* Use semaphore lock if not executing at interrupt level */
|
|
|
|
if (flags & ACPI_NOT_ISR) {
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/* 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:
|
|
if (flags & ACPI_NOT_ISR) {
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
|
|
}
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_clear_gpe)
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_get_event_status
|
|
*
|
|
* PARAMETERS: Event - The fixed event
|
|
* event_status - Where the current status of the event will
|
|
* be returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Obtains and returns the current status of the event
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
u32 value;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_get_event_status);
|
|
|
|
if (!event_status) {
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Decode the Fixed Event */
|
|
|
|
if (event > ACPI_EVENT_MAX) {
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Get the status of the requested fixed event */
|
|
|
|
status =
|
|
acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
|
|
enable_register_id, &value);
|
|
if (ACPI_FAILURE(status))
|
|
return_ACPI_STATUS(status);
|
|
|
|
*event_status = value;
|
|
|
|
status =
|
|
acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
|
|
status_register_id, &value);
|
|
if (ACPI_FAILURE(status))
|
|
return_ACPI_STATUS(status);
|
|
|
|
if (value)
|
|
*event_status |= ACPI_EVENT_FLAG_SET;
|
|
|
|
if (acpi_gbl_fixed_event_handlers[event].handler)
|
|
*event_status |= ACPI_EVENT_FLAG_HANDLE;
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_event_status)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_get_gpe_status
|
|
*
|
|
* PARAMETERS: gpe_device - Parent GPE Device
|
|
* gpe_number - GPE level within the GPE block
|
|
* Flags - Called from an ISR or not
|
|
* 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, u32 flags, acpi_event_status * event_status)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
struct acpi_gpe_event_info *gpe_event_info;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_get_gpe_status);
|
|
|
|
/* Use semaphore lock if not executing at interrupt level */
|
|
|
|
if (flags & ACPI_NOT_ISR) {
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/* 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:
|
|
if (flags & ACPI_NOT_ISR) {
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
|
|
}
|
|
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;
|
|
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;
|
|
}
|
|
|
|
/* Run the _PRW methods and enable the GPEs */
|
|
|
|
status = acpi_ev_initialize_gpe_block(node, gpe_block);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto unlock_and_exit;
|
|
}
|
|
|
|
/* Get the device_object attached to the node */
|
|
|
|
obj_desc = acpi_ns_get_attached_object(node);
|
|
if (!obj_desc) {
|
|
|
|
/* No object, create a new one */
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
/* 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->register_count * ACPI_GPE_REGISTER_WIDTH);
|
|
|
|
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);
|
|
}
|