2005-04-17 06:20:36 +08:00
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/******************************************************************************
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*
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2012-02-14 15:00:53 +08:00
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* Name: hwsleep.c - ACPI Hardware Sleep/Wake Support Functions
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2005-04-17 06:20:36 +08:00
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*
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*****************************************************************************/
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/*
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2012-01-12 13:27:23 +08:00
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* Copyright (C) 2000 - 2012, Intel Corp.
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2005-04-17 06:20:36 +08:00
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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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2009-01-09 13:30:03 +08:00
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#include "accommon.h"
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2009-09-02 09:25:07 +08:00
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#include <linux/tboot.h>
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2011-07-02 02:30:49 +08:00
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#include <linux/module.h>
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2005-04-17 06:20:36 +08:00
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#define _COMPONENT ACPI_HARDWARE
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2005-08-05 12:44:28 +08:00
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ACPI_MODULE_NAME("hwsleep")
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2005-04-17 06:20:36 +08:00
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2012-02-14 15:00:53 +08:00
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/* Local prototypes */
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static void acpi_hw_execute_GTS(u8 sleep_state);
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static void acpi_hw_execute_BFS(u8 sleep_state);
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static void acpi_hw_execute_WAK(u8 sleep_state);
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static unsigned int gts, bfs;
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module_param(gts, uint, 0644);
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module_param(bfs, uint, 0644);
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MODULE_PARM_DESC(gts, "Enable evaluation of _GTS on suspend.");
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MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".);
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2005-04-19 10:49:35 +08:00
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/*******************************************************************************
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2005-04-17 06:20:36 +08:00
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*
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2012-02-14 15:00:53 +08:00
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* FUNCTION: acpi_hw_execute_GTS
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2005-04-17 06:20:36 +08:00
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*
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2012-02-14 15:00:53 +08:00
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* PARAMETERS: sleep_state - Sleep state that will be entered
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2005-04-17 06:20:36 +08:00
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*
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2012-02-14 15:00:53 +08:00
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* RETURN: None
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2005-04-17 06:20:36 +08:00
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*
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2012-02-14 15:00:53 +08:00
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* DESCRIPTION: Execute the optional _GTS method (Going To Sleep)
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2005-04-17 06:20:36 +08:00
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*
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******************************************************************************/
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2007-02-03 00:48:18 +08:00
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2012-02-14 15:00:53 +08:00
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static void acpi_hw_execute_GTS(u8 sleep_state)
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{
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struct acpi_object_list arg_list;
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union acpi_object arg;
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acpi_status status;
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2008-09-06 19:13:01 +08:00
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2012-02-14 15:00:53 +08:00
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if (!gts)
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return;
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2008-11-12 14:54:05 +08:00
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2012-02-14 15:00:53 +08:00
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/* One argument, sleep_state */
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2008-11-12 14:54:05 +08:00
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2012-02-14 15:00:53 +08:00
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arg_list.count = 1;
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arg_list.pointer = &arg;
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arg.type = ACPI_TYPE_INTEGER;
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arg.integer.value = sleep_state;
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2008-11-12 14:54:05 +08:00
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2012-02-14 15:00:53 +08:00
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status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL);
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if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
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ACPI_EXCEPTION((AE_INFO, status,
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"While executing method _GTS"));
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2008-11-12 14:54:05 +08:00
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}
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2005-04-17 06:20:36 +08:00
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}
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2005-04-19 10:49:35 +08:00
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/*******************************************************************************
|
2005-04-17 06:20:36 +08:00
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*
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2012-02-14 15:00:53 +08:00
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* FUNCTION: acpi_hw_execute_BFS
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2005-04-17 06:20:36 +08:00
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*
|
2012-02-14 15:00:53 +08:00
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* PARAMETERS: sleep_state - Which sleep state we just exited
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2005-04-17 06:20:36 +08:00
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*
|
2012-02-14 15:00:53 +08:00
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* RETURN: None
|
2005-04-17 06:20:36 +08:00
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*
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2012-02-14 15:00:53 +08:00
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* DESCRIPTION: Execute the optional _BFS method (Back From Sleep)
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2005-04-17 06:20:36 +08:00
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*
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******************************************************************************/
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2012-02-14 15:00:53 +08:00
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static void acpi_hw_execute_BFS(u8 sleep_state)
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{
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struct acpi_object_list arg_list;
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union acpi_object arg;
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acpi_status status;
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2008-11-12 14:54:05 +08:00
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2012-02-14 15:00:53 +08:00
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if (!bfs)
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return;
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2008-11-12 14:54:05 +08:00
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2012-02-14 15:00:53 +08:00
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/* One argument, sleep_state */
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2008-11-12 14:54:05 +08:00
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2012-02-14 15:00:53 +08:00
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arg_list.count = 1;
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arg_list.pointer = &arg;
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arg.type = ACPI_TYPE_INTEGER;
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arg.integer.value = sleep_state;
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2005-04-17 06:20:36 +08:00
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2012-02-14 15:00:53 +08:00
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status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL);
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if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
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ACPI_EXCEPTION((AE_INFO, status,
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"While executing method _BFS"));
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}
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2005-04-17 06:20:36 +08:00
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}
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2006-10-03 12:00:00 +08:00
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2005-04-19 10:49:35 +08:00
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/*******************************************************************************
|
2005-04-17 06:20:36 +08:00
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*
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2012-02-14 15:00:53 +08:00
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* FUNCTION: acpi_hw_execute_WAK
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2005-04-17 06:20:36 +08:00
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*
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2012-02-14 15:00:53 +08:00
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* PARAMETERS: sleep_state - Which sleep state we just exited
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2005-04-17 06:20:36 +08:00
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*
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2012-02-14 15:00:53 +08:00
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* RETURN: None
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2005-04-17 06:20:36 +08:00
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*
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2012-02-14 15:00:53 +08:00
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* DESCRIPTION: Execute the _WAK method (System Wake)
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2005-04-17 06:20:36 +08:00
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*
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******************************************************************************/
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2012-02-14 15:00:53 +08:00
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static void acpi_hw_execute_WAK(u8 sleep_state)
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2005-04-17 06:20:36 +08:00
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{
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2005-08-05 12:44:28 +08:00
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struct acpi_object_list arg_list;
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union acpi_object arg;
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2012-02-14 15:00:53 +08:00
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acpi_status status;
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2005-04-17 06:20:36 +08:00
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2012-02-14 15:00:53 +08:00
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/* One argument, sleep_state */
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2005-04-17 06:20:36 +08:00
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arg_list.count = 1;
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arg_list.pointer = &arg;
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arg.type = ACPI_TYPE_INTEGER;
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arg.integer.value = sleep_state;
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|
2012-02-14 15:00:53 +08:00
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status = acpi_evaluate_object(NULL, METHOD_NAME__WAK, &arg_list, NULL);
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2005-08-05 12:44:28 +08:00
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if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
|
2012-02-14 15:00:53 +08:00
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ACPI_EXCEPTION((AE_INFO, status,
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"While executing method _WAK"));
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2005-04-17 06:20:36 +08:00
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}
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2012-02-14 15:00:53 +08:00
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/* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
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}
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2005-04-17 06:20:36 +08:00
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2012-02-14 15:00:53 +08:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_hw_execute_SST
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*
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* PARAMETERS: indicator_id - Value to be passed to the _SST method
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*
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* RETURN: None
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*
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* DESCRIPTION: Execute the optional _SST method (System Status)
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*
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|
******************************************************************************/
|
2005-04-17 06:20:36 +08:00
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2012-02-14 15:00:53 +08:00
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void acpi_hw_execute_SST(u32 indicator_id)
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{
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struct acpi_object_list arg_list;
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union acpi_object arg;
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acpi_status status;
|
2005-04-17 06:20:36 +08:00
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2012-02-14 15:00:53 +08:00
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/* One argument, status indicator ID */
|
2005-04-17 06:20:36 +08:00
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|
2012-02-14 15:00:53 +08:00
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arg_list.count = 1;
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arg_list.pointer = &arg;
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|
arg.type = ACPI_TYPE_INTEGER;
|
2005-04-17 06:20:36 +08:00
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|
2012-02-14 15:00:53 +08:00
|
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arg.integer.value = indicator_id;
|
2005-08-05 12:44:28 +08:00
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status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL);
|
|
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
|
2006-01-28 05:43:00 +08:00
|
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|
ACPI_EXCEPTION((AE_INFO, status,
|
|
|
|
"While executing method _SST"));
|
2005-04-17 06:20:36 +08:00
|
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}
|
|
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}
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|
|
|
|
2012-02-14 18:14:27 +08:00
|
|
|
#if (!ACPI_REDUCED_HARDWARE)
|
2005-04-19 10:49:35 +08:00
|
|
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/*******************************************************************************
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
2012-02-14 15:00:53 +08:00
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|
|
* FUNCTION: acpi_hw_legacy_sleep
|
2005-04-17 06:20:36 +08:00
|
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*
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* PARAMETERS: sleep_state - Which sleep state to enter
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*
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|
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* RETURN: Status
|
|
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|
*
|
2012-02-14 15:00:53 +08:00
|
|
|
* DESCRIPTION: Enter a system sleep state via the legacy FADT PM registers
|
2005-04-17 06:20:36 +08:00
|
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|
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
|
|
|
|
*
|
|
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|
******************************************************************************/
|
2012-02-14 15:00:53 +08:00
|
|
|
|
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|
|
acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-08-05 12:44:28 +08:00
|
|
|
struct acpi_bit_register_info *sleep_type_reg_info;
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|
|
struct acpi_bit_register_info *sleep_enable_reg_info;
|
2012-02-14 15:00:53 +08:00
|
|
|
u32 pm1a_control;
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|
|
|
u32 pm1b_control;
|
2005-08-05 12:44:28 +08:00
|
|
|
u32 in_value;
|
|
|
|
acpi_status status;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
ACPI_FUNCTION_TRACE(hw_legacy_sleep);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
sleep_type_reg_info =
|
2009-02-18 14:31:05 +08:00
|
|
|
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
|
2005-08-05 12:44:28 +08:00
|
|
|
sleep_enable_reg_info =
|
|
|
|
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Clear wake status */
|
|
|
|
|
2009-03-06 09:49:25 +08:00
|
|
|
status =
|
|
|
|
acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS);
|
2005-08-05 12:44:28 +08:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Clear all fixed and general purpose status bits */
|
|
|
|
|
2007-02-03 00:48:21 +08:00
|
|
|
status = acpi_hw_clear_acpi_status();
|
2005-08-05 12:44:28 +08:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
if (sleep_state != ACPI_STATE_S5) {
|
|
|
|
/*
|
|
|
|
* Disable BM arbitration. This feature is contained within an
|
|
|
|
* optional register (PM2 Control), so ignore a BAD_ADDRESS
|
|
|
|
* exception.
|
|
|
|
*/
|
|
|
|
status = acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 1);
|
|
|
|
if (ACPI_FAILURE(status) && (status != AE_BAD_ADDRESS)) {
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/*
|
2008-02-06 02:27:12 +08:00
|
|
|
* 1) Disable/Clear all GPEs
|
2005-04-17 06:20:36 +08:00
|
|
|
* 2) Enable all wakeup GPEs
|
|
|
|
*/
|
2007-03-13 02:49:26 +08:00
|
|
|
status = acpi_hw_disable_all_gpes();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
2005-04-17 06:20:36 +08:00
|
|
|
acpi_gbl_system_awake_and_running = FALSE;
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_hw_enable_all_wakeup_gpes();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
/* Execute the _GTS method (Going To Sleep) */
|
2008-01-08 07:05:21 +08:00
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
acpi_hw_execute_GTS(sleep_state);
|
2008-01-08 07:05:21 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/* Get current value of PM1A control */
|
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
|
|
|
|
&pm1a_control);
|
2005-08-05 12:44:28 +08:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
2005-08-05 12:44:28 +08:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
|
2010-05-26 11:47:13 +08:00
|
|
|
"Entering sleep state [S%u]\n", sleep_state));
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
/* Clear the SLP_EN and SLP_TYP fields */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
pm1a_control &= ~(sleep_type_reg_info->access_bit_mask |
|
|
|
|
sleep_enable_reg_info->access_bit_mask);
|
|
|
|
pm1b_control = pm1a_control;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
/* Insert the SLP_TYP bits */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
pm1a_control |=
|
2005-08-05 12:44:28 +08:00
|
|
|
(acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position);
|
2009-02-18 14:36:05 +08:00
|
|
|
pm1b_control |=
|
2005-08-05 12:44:28 +08:00
|
|
|
(acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* We split the writes of SLP_TYP and SLP_EN to workaround
|
|
|
|
* poorly implemented hardware.
|
|
|
|
*/
|
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
/* Write #1: write the SLP_TYP data to the PM1 Control registers */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
|
2005-08-05 12:44:28 +08:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
/* Insert the sleep enable (SLP_EN) bit */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
pm1a_control |= sleep_enable_reg_info->access_bit_mask;
|
|
|
|
pm1b_control |= sleep_enable_reg_info->access_bit_mask;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
/* Flush caches, as per ACPI specification */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
ACPI_FLUSH_CPU_CACHE();
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-07-01 10:31:07 +08:00
|
|
|
tboot_sleep(sleep_state, pm1a_control, pm1b_control);
|
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
/* Write #2: Write both SLP_TYP + SLP_EN */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
|
2005-08-05 12:44:28 +08:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if (sleep_state > ACPI_STATE_S3) {
|
|
|
|
/*
|
2005-04-19 10:49:35 +08:00
|
|
|
* We wanted to sleep > S3, but it didn't happen (by virtue of the
|
|
|
|
* fact that we are still executing!)
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
2005-04-19 10:49:35 +08:00
|
|
|
* Wait ten seconds, then try again. This is to get S4/S5 to work on
|
|
|
|
* all machines.
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
2009-03-06 10:05:18 +08:00
|
|
|
* We wait so long to allow chipsets that poll this reg very slowly
|
|
|
|
* to still read the right value. Ideally, this block would go
|
2005-04-17 06:20:36 +08:00
|
|
|
* away entirely.
|
|
|
|
*/
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_os_stall(10000000);
|
|
|
|
|
2007-10-01 02:39:36 +08:00
|
|
|
status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL,
|
2005-08-05 12:44:28 +08:00
|
|
|
sleep_enable_reg_info->
|
|
|
|
access_bit_mask);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
/* Wait for transition back to Working State */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
do {
|
2009-02-23 15:02:07 +08:00
|
|
|
status =
|
|
|
|
acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value);
|
2005-08-05 12:44:28 +08:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
2012-02-14 15:00:53 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
} while (!in_value);
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
return_ACPI_STATUS(AE_OK);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2005-04-19 10:49:35 +08:00
|
|
|
/*******************************************************************************
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
2012-02-14 15:00:53 +08:00
|
|
|
* FUNCTION: acpi_hw_legacy_wake_prep
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
2012-02-14 15:00:53 +08:00
|
|
|
* PARAMETERS: sleep_state - Which sleep state we just exited
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
2008-01-08 07:05:21 +08:00
|
|
|
* DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
|
|
|
|
* sleep.
|
2012-02-14 15:00:53 +08:00
|
|
|
* Called with interrupts ENABLED.
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
|
|
|
******************************************************************************/
|
2012-02-14 15:00:53 +08:00
|
|
|
|
|
|
|
acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_status status;
|
|
|
|
struct acpi_bit_register_info *sleep_type_reg_info;
|
|
|
|
struct acpi_bit_register_info *sleep_enable_reg_info;
|
2009-02-18 14:36:05 +08:00
|
|
|
u32 pm1a_control;
|
|
|
|
u32 pm1b_control;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
ACPI_FUNCTION_TRACE(hw_legacy_wake_prep);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Set SLP_TYPE and SLP_EN to state S0.
|
|
|
|
* This is unclear from the ACPI Spec, but it is required
|
|
|
|
* by some machines.
|
|
|
|
*/
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_get_sleep_type_data(ACPI_STATE_S0,
|
|
|
|
&acpi_gbl_sleep_type_a,
|
|
|
|
&acpi_gbl_sleep_type_b);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
sleep_type_reg_info =
|
2009-02-18 14:31:05 +08:00
|
|
|
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
|
2005-08-05 12:44:28 +08:00
|
|
|
sleep_enable_reg_info =
|
|
|
|
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Get current value of PM1A control */
|
|
|
|
|
2007-10-01 02:39:36 +08:00
|
|
|
status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
|
2009-02-18 14:36:05 +08:00
|
|
|
&pm1a_control);
|
2005-08-05 12:44:28 +08:00
|
|
|
if (ACPI_SUCCESS(status)) {
|
2006-10-02 12:00:00 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
/* Clear the SLP_EN and SLP_TYP fields */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
pm1a_control &= ~(sleep_type_reg_info->access_bit_mask |
|
|
|
|
sleep_enable_reg_info->
|
|
|
|
access_bit_mask);
|
|
|
|
pm1b_control = pm1a_control;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
/* Insert the SLP_TYP bits */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-03-06 10:05:18 +08:00
|
|
|
pm1a_control |= (acpi_gbl_sleep_type_a <<
|
|
|
|
sleep_type_reg_info->bit_position);
|
|
|
|
pm1b_control |= (acpi_gbl_sleep_type_b <<
|
|
|
|
sleep_type_reg_info->bit_position);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
/* Write the control registers and ignore any errors */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-02-18 14:36:05 +08:00
|
|
|
(void)acpi_hw_write_pm1_control(pm1a_control,
|
|
|
|
pm1b_control);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
acpi_hw_execute_BFS(sleep_state);
|
2008-01-08 07:05:21 +08:00
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
2012-02-14 15:00:53 +08:00
|
|
|
* FUNCTION: acpi_hw_legacy_wake
|
2008-01-08 07:05:21 +08:00
|
|
|
*
|
|
|
|
* PARAMETERS: sleep_state - Which sleep state we just exited
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
|
|
|
|
* Called with interrupts ENABLED.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
2012-02-14 15:00:53 +08:00
|
|
|
|
|
|
|
acpi_status acpi_hw_legacy_wake(u8 sleep_state)
|
2008-01-08 07:05:21 +08:00
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
ACPI_FUNCTION_TRACE(hw_legacy_wake);
|
2008-01-08 07:05:21 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
|
|
|
|
|
|
|
|
acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
|
2012-02-14 15:00:53 +08:00
|
|
|
acpi_hw_execute_SST(ACPI_SST_WAKING);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/*
|
2007-08-24 13:24:47 +08:00
|
|
|
* GPEs must be enabled before _WAK is called as GPEs
|
|
|
|
* might get fired there
|
|
|
|
*
|
2005-04-17 06:20:36 +08:00
|
|
|
* Restore the GPEs:
|
|
|
|
* 1) Disable/Clear all GPEs
|
|
|
|
* 2) Enable all runtime GPEs
|
|
|
|
*/
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_hw_disable_all_gpes();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
2012-02-14 15:00:53 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_hw_enable_all_runtime_gpes();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
/*
|
|
|
|
* Now we can execute _WAK, etc. Some machines require that the GPEs
|
|
|
|
* are enabled before the wake methods are executed.
|
|
|
|
*/
|
|
|
|
acpi_hw_execute_WAK(sleep_state);
|
2007-08-24 13:24:47 +08:00
|
|
|
|
2008-08-07 02:12:04 +08:00
|
|
|
/*
|
2012-02-14 15:00:53 +08:00
|
|
|
* Some BIOS code assumes that WAK_STS will be cleared on resume
|
|
|
|
* and use it to determine whether the system is rebooting or
|
|
|
|
* resuming. Clear WAK_STS for compatibility.
|
2008-08-07 02:12:04 +08:00
|
|
|
*/
|
2009-02-23 15:02:07 +08:00
|
|
|
acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS, 1);
|
2007-08-24 13:24:47 +08:00
|
|
|
acpi_gbl_system_awake_and_running = TRUE;
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/* Enable power button */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
(void)
|
2009-02-23 15:02:07 +08:00
|
|
|
acpi_write_bit_register(acpi_gbl_fixed_event_info
|
2012-02-14 15:00:53 +08:00
|
|
|
[ACPI_EVENT_POWER_BUTTON].
|
|
|
|
enable_register_id, ACPI_ENABLE_EVENT);
|
2005-04-19 10:49:35 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
(void)
|
2009-02-23 15:02:07 +08:00
|
|
|
acpi_write_bit_register(acpi_gbl_fixed_event_info
|
2012-02-14 15:00:53 +08:00
|
|
|
[ACPI_EVENT_POWER_BUTTON].
|
|
|
|
status_register_id, ACPI_CLEAR_STATUS);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
/*
|
|
|
|
* Enable BM arbitration. This feature is contained within an
|
|
|
|
* optional register (PM2 Control), so ignore a BAD_ADDRESS
|
|
|
|
* exception.
|
|
|
|
*/
|
|
|
|
status = acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 0);
|
|
|
|
if (ACPI_FAILURE(status) && (status != AE_BAD_ADDRESS)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2012-02-14 15:00:53 +08:00
|
|
|
acpi_hw_execute_SST(ACPI_SST_WORKING);
|
2005-08-05 12:44:28 +08:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
2006-10-03 12:00:00 +08:00
|
|
|
|
2012-02-14 18:14:27 +08:00
|
|
|
#endif /* !ACPI_REDUCED_HARDWARE */
|
2012-02-14 15:00:53 +08:00
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_hw_extended_sleep
|
|
|
|
*
|
|
|
|
* PARAMETERS: sleep_state - Which sleep state to enter
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Enter a system sleep state via the extended FADT sleep
|
|
|
|
* registers (V5 FADT).
|
|
|
|
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
acpi_status acpi_hw_extended_sleep(u8 sleep_state)
|
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
u8 sleep_type_value;
|
|
|
|
u64 sleep_status;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_TRACE(hw_extended_sleep);
|
|
|
|
|
|
|
|
/* Extended sleep registers must be valid */
|
|
|
|
|
|
|
|
if (!acpi_gbl_FADT.sleep_control.address ||
|
|
|
|
!acpi_gbl_FADT.sleep_status.address) {
|
|
|
|
return_ACPI_STATUS(AE_NOT_EXIST);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Clear wake status (WAK_STS) */
|
|
|
|
|
|
|
|
status = acpi_write(ACPI_X_WAKE_STATUS, &acpi_gbl_FADT.sleep_status);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
acpi_gbl_system_awake_and_running = FALSE;
|
|
|
|
|
|
|
|
/* Execute the _GTS method (Going To Sleep) */
|
|
|
|
|
|
|
|
acpi_hw_execute_GTS(sleep_state);
|
|
|
|
|
|
|
|
/* Flush caches, as per ACPI specification */
|
|
|
|
|
|
|
|
ACPI_FLUSH_CPU_CACHE();
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set the SLP_TYP and SLP_EN bits.
|
|
|
|
*
|
|
|
|
* Note: We only use the first value returned by the \_Sx method
|
|
|
|
* (acpi_gbl_sleep_type_a) - As per ACPI specification.
|
|
|
|
*/
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
|
|
|
|
"Entering sleep state [S%u]\n", sleep_state));
|
|
|
|
|
|
|
|
sleep_type_value =
|
|
|
|
((acpi_gbl_sleep_type_a << ACPI_X_SLEEP_TYPE_POSITION) &
|
|
|
|
ACPI_X_SLEEP_TYPE_MASK);
|
|
|
|
|
|
|
|
status = acpi_write((sleep_type_value | ACPI_X_SLEEP_ENABLE),
|
|
|
|
&acpi_gbl_FADT.sleep_control);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Wait for transition back to Working State */
|
|
|
|
|
|
|
|
do {
|
|
|
|
status = acpi_read(&sleep_status, &acpi_gbl_FADT.sleep_status);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
} while (!(((u8)sleep_status) & ACPI_X_WAKE_STATUS));
|
|
|
|
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_hw_extended_wake_prep
|
|
|
|
*
|
|
|
|
* PARAMETERS: sleep_state - Which sleep state we just exited
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Perform first part of OS-independent ACPI cleanup after
|
|
|
|
* a sleep. Called with interrupts ENABLED.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
acpi_status acpi_hw_extended_wake_prep(u8 sleep_state)
|
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
u8 sleep_type_value;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_TRACE(hw_extended_wake_prep);
|
|
|
|
|
|
|
|
status = acpi_get_sleep_type_data(ACPI_STATE_S0,
|
|
|
|
&acpi_gbl_sleep_type_a,
|
|
|
|
&acpi_gbl_sleep_type_b);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
sleep_type_value =
|
|
|
|
((acpi_gbl_sleep_type_a << ACPI_X_SLEEP_TYPE_POSITION) &
|
|
|
|
ACPI_X_SLEEP_TYPE_MASK);
|
|
|
|
|
|
|
|
(void)acpi_write((sleep_type_value | ACPI_X_SLEEP_ENABLE),
|
|
|
|
&acpi_gbl_FADT.sleep_control);
|
|
|
|
}
|
|
|
|
|
|
|
|
acpi_hw_execute_BFS(sleep_state);
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_hw_extended_wake
|
|
|
|
*
|
|
|
|
* PARAMETERS: sleep_state - Which sleep state we just exited
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
|
|
|
|
* Called with interrupts ENABLED.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
acpi_status acpi_hw_extended_wake(u8 sleep_state)
|
|
|
|
{
|
|
|
|
ACPI_FUNCTION_TRACE(hw_extended_wake);
|
|
|
|
|
|
|
|
/* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
|
|
|
|
|
|
|
|
acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
|
|
|
|
|
|
|
|
/* Execute the wake methods */
|
|
|
|
|
|
|
|
acpi_hw_execute_SST(ACPI_SST_WAKING);
|
|
|
|
acpi_hw_execute_WAK(sleep_state);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Some BIOS code assumes that WAK_STS will be cleared on resume
|
|
|
|
* and use it to determine whether the system is rebooting or
|
|
|
|
* resuming. Clear WAK_STS for compatibility.
|
|
|
|
*/
|
|
|
|
(void)acpi_write(ACPI_X_WAKE_STATUS, &acpi_gbl_FADT.sleep_status);
|
|
|
|
acpi_gbl_system_awake_and_running = TRUE;
|
|
|
|
|
|
|
|
acpi_hw_execute_SST(ACPI_SST_WORKING);
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
}
|