forked from Minki/linux
9e50ab91d0
* 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (27 commits) ACPI / ACPICA: Simplify acpi_ev_initialize_gpe_block() ACPI / ACPICA: Fail acpi_gpe_wakeup() if ACPI_GPE_CAN_WAKE is unset ACPI / ACPICA: Do not execute _PRW methods during initialization ACPI: Fix bogus GPE test in acpi_bus_set_run_wake_flags() ACPICA: Update version to 20100702 ACPICA: Fix for Alias references within Package objects ACPICA: Fix lint warning for 64-bit constant ACPICA: Remove obsolete GPE function ACPICA: Update debug output components ACPICA: Add support for WDDT - Watchdog Descriptor Table ACPICA: Drop acpi_set_gpe ACPICA: Use low-level GPE enable during GPE block initialization ACPI / EC: Do not use acpi_set_gpe ACPI / EC: Drop suspend and resume routines ACPICA: Remove wakeup GPE reference counting which is not used ACPICA: Introduce acpi_gpe_wakeup() ACPICA: Rename acpi_hw_gpe_register_bit ACPICA: Update version to 20100528 ACPICA: Add signatures for undefined tables: ATKG, GSCI, IEIT ACPICA: Optimization: Reduce the number of namespace walks ...
971 lines
26 KiB
C
971 lines
26 KiB
C
/******************************************************************************
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*
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* Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2010, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acevents.h"
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#include "acnamesp.h"
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#include "actables.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME("evxfevnt")
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/* Local prototypes */
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static acpi_status
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acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
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struct acpi_gpe_block_info *gpe_block, void *context);
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/*******************************************************************************
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*
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* FUNCTION: acpi_enable
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Transfers the system into ACPI mode.
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*
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******************************************************************************/
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acpi_status acpi_enable(void)
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{
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acpi_status status;
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int retry;
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ACPI_FUNCTION_TRACE(acpi_enable);
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/* ACPI tables must be present */
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if (!acpi_tb_tables_loaded()) {
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return_ACPI_STATUS(AE_NO_ACPI_TABLES);
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}
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/* Check current mode */
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if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
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ACPI_DEBUG_PRINT((ACPI_DB_INIT,
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"System is already in ACPI mode\n"));
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return_ACPI_STATUS(AE_OK);
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}
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/* Transition to ACPI mode */
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status = acpi_hw_set_mode(ACPI_SYS_MODE_ACPI);
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if (ACPI_FAILURE(status)) {
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ACPI_ERROR((AE_INFO,
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"Could not transition to ACPI mode"));
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return_ACPI_STATUS(status);
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}
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/* Sanity check that transition succeeded */
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for (retry = 0; retry < 30000; ++retry) {
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if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
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if (retry != 0)
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ACPI_WARNING((AE_INFO,
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"Platform took > %d00 usec to enter ACPI mode", retry));
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return_ACPI_STATUS(AE_OK);
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}
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acpi_os_stall(100); /* 100 usec */
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}
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ACPI_ERROR((AE_INFO, "Hardware did not enter ACPI mode"));
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return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
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}
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ACPI_EXPORT_SYMBOL(acpi_enable)
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/*******************************************************************************
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*
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* FUNCTION: acpi_disable
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode.
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*
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******************************************************************************/
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acpi_status acpi_disable(void)
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{
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acpi_status status = AE_OK;
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ACPI_FUNCTION_TRACE(acpi_disable);
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if (acpi_hw_get_mode() == ACPI_SYS_MODE_LEGACY) {
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ACPI_DEBUG_PRINT((ACPI_DB_INIT,
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"System is already in legacy (non-ACPI) mode\n"));
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} else {
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/* Transition to LEGACY mode */
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status = acpi_hw_set_mode(ACPI_SYS_MODE_LEGACY);
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if (ACPI_FAILURE(status)) {
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ACPI_ERROR((AE_INFO,
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"Could not exit ACPI mode to legacy mode"));
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return_ACPI_STATUS(status);
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}
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ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI mode disabled\n"));
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}
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_disable)
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/*******************************************************************************
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*
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* FUNCTION: acpi_enable_event
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*
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* PARAMETERS: Event - The fixed eventto be enabled
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* Flags - Reserved
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*
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* RETURN: Status
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*
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* DESCRIPTION: Enable an ACPI event (fixed)
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*
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******************************************************************************/
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acpi_status acpi_enable_event(u32 event, u32 flags)
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{
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acpi_status status = AE_OK;
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u32 value;
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ACPI_FUNCTION_TRACE(acpi_enable_event);
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/* Decode the Fixed Event */
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if (event > ACPI_EVENT_MAX) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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/*
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* Enable the requested fixed event (by writing a one to the enable
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* register bit)
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*/
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status =
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acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
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enable_register_id, ACPI_ENABLE_EVENT);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/* Make sure that the hardware responded */
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status =
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acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
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enable_register_id, &value);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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if (value != 1) {
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ACPI_ERROR((AE_INFO,
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"Could not enable %s event",
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acpi_ut_get_event_name(event)));
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return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
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}
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_enable_event)
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/*******************************************************************************
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*
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* FUNCTION: acpi_gpe_wakeup
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*
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* PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
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* gpe_number - GPE level within the GPE block
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* Action - Enable or Disable
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*
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* RETURN: Status
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*
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* DESCRIPTION: Set or clear the GPE's wakeup enable mask bit.
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*
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******************************************************************************/
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acpi_status acpi_gpe_wakeup(acpi_handle gpe_device, u32 gpe_number, u8 action)
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{
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acpi_status status = AE_OK;
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struct acpi_gpe_event_info *gpe_event_info;
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struct acpi_gpe_register_info *gpe_register_info;
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acpi_cpu_flags flags;
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u32 register_bit;
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ACPI_FUNCTION_TRACE(acpi_gpe_wakeup);
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flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
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/* Ensure that we have a valid GPE number */
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gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
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if (!gpe_event_info || !(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
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status = AE_BAD_PARAMETER;
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goto unlock_and_exit;
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}
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gpe_register_info = gpe_event_info->register_info;
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if (!gpe_register_info) {
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status = AE_NOT_EXIST;
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goto unlock_and_exit;
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}
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register_bit =
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acpi_hw_get_gpe_register_bit(gpe_event_info, gpe_register_info);
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/* Perform the action */
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switch (action) {
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case ACPI_GPE_ENABLE:
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ACPI_SET_BIT(gpe_register_info->enable_for_wake,
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(u8)register_bit);
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break;
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case ACPI_GPE_DISABLE:
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ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake,
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(u8)register_bit);
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break;
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default:
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ACPI_ERROR((AE_INFO, "%u, Invalid action", action));
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status = AE_BAD_PARAMETER;
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break;
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}
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unlock_and_exit:
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acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_gpe_wakeup)
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/*******************************************************************************
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*
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* FUNCTION: acpi_enable_gpe
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*
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* PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
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* gpe_number - GPE level within the GPE block
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*
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* RETURN: Status
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*
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* DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is
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* hardware-enabled.
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*
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******************************************************************************/
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acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
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{
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acpi_status status = AE_OK;
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struct acpi_gpe_event_info *gpe_event_info;
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acpi_cpu_flags flags;
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ACPI_FUNCTION_TRACE(acpi_enable_gpe);
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flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
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/* Ensure that we have a valid GPE number */
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gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
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if (!gpe_event_info) {
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status = AE_BAD_PARAMETER;
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goto unlock_and_exit;
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}
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if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) {
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status = AE_LIMIT; /* Too many references */
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goto unlock_and_exit;
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}
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gpe_event_info->runtime_count++;
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if (gpe_event_info->runtime_count == 1) {
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status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
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if (ACPI_SUCCESS(status)) {
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status = acpi_ev_enable_gpe(gpe_event_info);
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}
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if (ACPI_FAILURE(status)) {
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gpe_event_info->runtime_count--;
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}
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}
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unlock_and_exit:
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acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
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/*******************************************************************************
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*
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* FUNCTION: acpi_disable_gpe
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*
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* PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
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* gpe_number - GPE level within the GPE block
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*
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* RETURN: Status
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*
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* DESCRIPTION: Remove a reference to a GPE. When the last reference is
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* removed, only then is the GPE disabled (for runtime GPEs), or
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* the GPE mask bit disabled (for wake GPEs)
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*
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******************************************************************************/
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acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
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{
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acpi_status status = AE_OK;
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struct acpi_gpe_event_info *gpe_event_info;
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acpi_cpu_flags flags;
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ACPI_FUNCTION_TRACE(acpi_disable_gpe);
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flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
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/* Ensure that we have a valid GPE number */
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gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
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if (!gpe_event_info) {
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status = AE_BAD_PARAMETER;
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goto unlock_and_exit;
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}
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/* Hardware-disable a runtime GPE on removal of the last reference */
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if (!gpe_event_info->runtime_count) {
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status = AE_LIMIT; /* There are no references to remove */
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goto unlock_and_exit;
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}
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gpe_event_info->runtime_count--;
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if (!gpe_event_info->runtime_count) {
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status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
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if (ACPI_SUCCESS(status)) {
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status =
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acpi_hw_low_set_gpe(gpe_event_info,
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ACPI_GPE_DISABLE);
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}
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if (ACPI_FAILURE(status)) {
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gpe_event_info->runtime_count++;
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}
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}
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unlock_and_exit:
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acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_disable_gpe)
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/*******************************************************************************
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*
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* FUNCTION: acpi_gpe_can_wake
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*
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* PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
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* gpe_number - GPE level within the GPE block
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*
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* RETURN: Status
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*
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* DESCRIPTION: Set the ACPI_GPE_CAN_WAKE flag for the given GPE. If the GPE
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* has a corresponding method and is currently enabled, disable it
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* (GPEs with corresponding methods are enabled unconditionally
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* during initialization, but GPEs that can wake up are expected
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* to be initially disabled).
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*
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******************************************************************************/
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acpi_status acpi_gpe_can_wake(acpi_handle gpe_device, u32 gpe_number)
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{
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acpi_status status = AE_OK;
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struct acpi_gpe_event_info *gpe_event_info;
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acpi_cpu_flags flags;
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u8 disable = 0;
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ACPI_FUNCTION_TRACE(acpi_gpe_can_wake);
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flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
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/* Ensure that we have a valid GPE number */
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gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
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if (!gpe_event_info) {
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status = AE_BAD_PARAMETER;
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goto unlock_and_exit;
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}
|
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|
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if (gpe_event_info->flags & ACPI_GPE_CAN_WAKE) {
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goto unlock_and_exit;
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}
|
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|
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gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
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disable = (gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD)
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&& gpe_event_info->runtime_count;
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|
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unlock_and_exit:
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acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
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|
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if (disable)
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status = acpi_disable_gpe(gpe_device, gpe_number);
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|
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_gpe_can_wake)
|
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|
|
/*******************************************************************************
|
|
*
|
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* FUNCTION: acpi_disable_event
|
|
*
|
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* PARAMETERS: Event - The fixed eventto be enabled
|
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* Flags - Reserved
|
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*
|
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* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Disable an ACPI event (fixed)
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_disable_event(u32 event, u32 flags)
|
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{
|
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acpi_status status = AE_OK;
|
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u32 value;
|
|
|
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ACPI_FUNCTION_TRACE(acpi_disable_event);
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|
|
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/* Decode the Fixed Event */
|
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|
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if (event > ACPI_EVENT_MAX) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
|
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}
|
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|
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/*
|
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* Disable the requested fixed event (by writing a zero to the enable
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* register bit)
|
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*/
|
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status =
|
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acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
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enable_register_id, ACPI_DISABLE_EVENT);
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if (ACPI_FAILURE(status)) {
|
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return_ACPI_STATUS(status);
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}
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|
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status =
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acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
|
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enable_register_id, &value);
|
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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|
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if (value != 0) {
|
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ACPI_ERROR((AE_INFO,
|
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"Could not disable %s events",
|
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acpi_ut_get_event_name(event)));
|
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return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
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}
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|
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return_ACPI_STATUS(status);
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}
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|
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ACPI_EXPORT_SYMBOL(acpi_disable_event)
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|
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/*******************************************************************************
|
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*
|
|
* 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. 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
|
|
* 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. 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;
|
|
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;
|
|
|
|
/* Enable the runtime GPEs in the new block */
|
|
|
|
status = acpi_ev_initialize_gpe_block(node, 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);
|
|
}
|