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ACPICA: Split sleep/wake functions into two files
The functions for the original/legacy sleep/wake registers are in hwsleep.c, and the functions for the new extended FADT V5 sleep registers are in hwesleep.c Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore
Len Brown
parent
f99648b1af
commit
7095857657
@ -68,6 +68,7 @@ acpi-y += \
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acpi-y += \
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hwacpi.o \
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hwesleep.o \
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hwgpe.o \
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hwpci.o \
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hwregs.o \
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@ -81,22 +81,25 @@ acpi_status acpi_hw_register_write(u32 register_id, u32 value);
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acpi_status acpi_hw_clear_acpi_status(void);
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/*
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* hwsleep - sleep/wake support
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* hwsleep - sleep/wake support (Legacy sleep registers)
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*/
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acpi_status acpi_hw_legacy_sleep(u8 sleep_state);
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acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state);
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acpi_status acpi_hw_legacy_wake(u8 sleep_state);
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/*
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* hwesleep - sleep/wake support (Extended FADT-V5 sleep registers)
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*/
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void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument);
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acpi_status acpi_hw_extended_sleep(u8 sleep_state);
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acpi_status acpi_hw_legacy_sleep(u8 sleep_state);
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acpi_status acpi_hw_extended_wake_prep(u8 sleep_state);
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acpi_status acpi_hw_extended_wake(u8 sleep_state);
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acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state);
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acpi_status acpi_hw_legacy_wake(u8 sleep_state);
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/*
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* hwvalid - Port I/O with validation
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*/
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251
drivers/acpi/acpica/hwesleep.c
Normal file
251
drivers/acpi/acpica/hwesleep.c
Normal file
@ -0,0 +1,251 @@
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/******************************************************************************
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*
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* Name: hwesleep.c - ACPI Hardware Sleep/Wake Support functions for the
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* extended FADT-V5 sleep registers.
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2012, 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 <linux/module.h>
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#define _COMPONENT ACPI_HARDWARE
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ACPI_MODULE_NAME("hwesleep")
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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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/*******************************************************************************
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*
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* FUNCTION: acpi_hw_execute_sleep_method
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*
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* PARAMETERS: method_name - Pathname of method to execute
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* integer_argument - Argument to pass to the method
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*
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* RETURN: None
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*
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* DESCRIPTION: Execute a sleep/wake related method with one integer argument
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* and no return value.
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*
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******************************************************************************/
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void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument)
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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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ACPI_FUNCTION_TRACE(hw_execute_sleep_method);
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if (!ACPI_STRCMP(METHOD_NAME__GTS, method_name) && !gts)
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return_VOID;
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if (!ACPI_STRCMP(METHOD_NAME__BFS, method_name) && !bfs)
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return_VOID;
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/* One argument, integer_argument; No return value expected */
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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 = (u64)integer_argument;
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status = acpi_evaluate_object(NULL, method_name, &arg_list, NULL);
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if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
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ACPI_EXCEPTION((AE_INFO, status, "While executing method %s",
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method_name));
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}
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_hw_extended_sleep
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*
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* PARAMETERS: sleep_state - Which sleep state to enter
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*
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* RETURN: Status
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*
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* DESCRIPTION: Enter a system sleep state via the extended FADT sleep
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* registers (V5 FADT).
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* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
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*
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******************************************************************************/
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acpi_status acpi_hw_extended_sleep(u8 sleep_state)
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{
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acpi_status status;
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u8 sleep_type_value;
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u64 sleep_status;
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ACPI_FUNCTION_TRACE(hw_extended_sleep);
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/* Extended sleep registers must be valid */
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if (!acpi_gbl_FADT.sleep_control.address ||
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!acpi_gbl_FADT.sleep_status.address) {
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return_ACPI_STATUS(AE_NOT_EXIST);
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}
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/* Clear wake status (WAK_STS) */
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status = acpi_write(ACPI_X_WAKE_STATUS, &acpi_gbl_FADT.sleep_status);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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acpi_gbl_system_awake_and_running = FALSE;
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/* Execute the _GTS method (Going To Sleep) */
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acpi_hw_execute_sleep_method(METHOD_NAME__GTS, sleep_state);
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/* Flush caches, as per ACPI specification */
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ACPI_FLUSH_CPU_CACHE();
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/*
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* Set the SLP_TYP and SLP_EN bits.
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*
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* Note: We only use the first value returned by the \_Sx method
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* (acpi_gbl_sleep_type_a) - As per ACPI specification.
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*/
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ACPI_DEBUG_PRINT((ACPI_DB_INIT,
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"Entering sleep state [S%u]\n", sleep_state));
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sleep_type_value =
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((acpi_gbl_sleep_type_a << ACPI_X_SLEEP_TYPE_POSITION) &
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ACPI_X_SLEEP_TYPE_MASK);
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status = acpi_write((sleep_type_value | ACPI_X_SLEEP_ENABLE),
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&acpi_gbl_FADT.sleep_control);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/* Wait for transition back to Working State */
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do {
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status = acpi_read(&sleep_status, &acpi_gbl_FADT.sleep_status);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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} while (!(((u8)sleep_status) & ACPI_X_WAKE_STATUS));
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return_ACPI_STATUS(AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_hw_extended_wake_prep
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*
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* PARAMETERS: sleep_state - Which sleep state we just exited
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*
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* RETURN: Status
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*
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* DESCRIPTION: Perform first part of OS-independent ACPI cleanup after
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* a sleep. Called with interrupts ENABLED.
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*
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******************************************************************************/
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acpi_status acpi_hw_extended_wake_prep(u8 sleep_state)
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{
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acpi_status status;
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u8 sleep_type_value;
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ACPI_FUNCTION_TRACE(hw_extended_wake_prep);
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status = acpi_get_sleep_type_data(ACPI_STATE_S0,
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&acpi_gbl_sleep_type_a,
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&acpi_gbl_sleep_type_b);
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if (ACPI_SUCCESS(status)) {
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sleep_type_value =
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((acpi_gbl_sleep_type_a << ACPI_X_SLEEP_TYPE_POSITION) &
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ACPI_X_SLEEP_TYPE_MASK);
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(void)acpi_write((sleep_type_value | ACPI_X_SLEEP_ENABLE),
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&acpi_gbl_FADT.sleep_control);
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}
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acpi_hw_execute_sleep_method(METHOD_NAME__BFS, sleep_state);
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return_ACPI_STATUS(AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_hw_extended_wake
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*
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* PARAMETERS: sleep_state - Which sleep state we just exited
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*
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* RETURN: Status
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*
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* DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
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* Called with interrupts ENABLED.
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*
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******************************************************************************/
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acpi_status acpi_hw_extended_wake(u8 sleep_state)
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{
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ACPI_FUNCTION_TRACE(hw_extended_wake);
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/* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
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acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
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/* Execute the wake methods */
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acpi_hw_execute_sleep_method(METHOD_NAME__SST, ACPI_SST_WAKING);
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acpi_hw_execute_sleep_method(METHOD_NAME__WAK, sleep_state);
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/*
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* Some BIOS code assumes that WAK_STS will be cleared on resume
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* and use it to determine whether the system is rebooting or
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* resuming. Clear WAK_STS for compatibility.
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*/
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(void)acpi_write(ACPI_X_WAKE_STATUS, &acpi_gbl_FADT.sleep_status);
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acpi_gbl_system_awake_and_running = TRUE;
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acpi_hw_execute_sleep_method(METHOD_NAME__SST, ACPI_SST_WORKING);
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return_ACPI_STATUS(AE_OK);
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}
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@ -1,6 +1,7 @@
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/******************************************************************************
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*
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* Name: hwsleep.c - ACPI Hardware Sleep/Wake Support Functions
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* Name: hwsleep.c - ACPI Hardware Sleep/Wake Support functions for the
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* original/legacy sleep/PM registers.
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*
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*****************************************************************************/
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@ -49,56 +50,7 @@
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#define _COMPONENT ACPI_HARDWARE
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ACPI_MODULE_NAME("hwsleep")
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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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/*******************************************************************************
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*
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* FUNCTION: acpi_hw_execute_sleep_method
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*
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* PARAMETERS: method_name - Pathname of method to execute
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* integer_argument - Argument to pass to the method
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*
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* RETURN: None
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*
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* DESCRIPTION: Execute a sleep/wake related method, with one integer argument
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* and no return value.
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*
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******************************************************************************/
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void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument)
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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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ACPI_FUNCTION_TRACE(hw_execute_sleep_method);
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if (!ACPI_STRCMP(METHOD_NAME__GTS, method_name) && !gts)
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return_VOID;
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if (!ACPI_STRCMP(METHOD_NAME__BFS, method_name) && !bfs)
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return_VOID;
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/* One argument, integer_argument */
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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 = (u64)integer_argument;
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status = acpi_evaluate_object(NULL, method_name, &arg_list, NULL);
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if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
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ACPI_EXCEPTION((AE_INFO, status, "While executing method %s",
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method_name));
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}
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return_VOID;
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}
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#if (!ACPI_REDUCED_HARDWARE)
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#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
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/*******************************************************************************
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*
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* FUNCTION: acpi_hw_legacy_sleep
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@ -111,7 +63,6 @@ void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument)
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* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
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*
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******************************************************************************/
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acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
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{
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struct acpi_bit_register_info *sleep_type_reg_info;
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@ -415,155 +366,3 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state)
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}
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#endif /* !ACPI_REDUCED_HARDWARE */
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/*******************************************************************************
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*
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* FUNCTION: acpi_hw_extended_sleep
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*
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* PARAMETERS: sleep_state - Which sleep state to enter
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*
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* RETURN: Status
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*
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* DESCRIPTION: Enter a system sleep state via the extended FADT sleep
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* registers (V5 FADT).
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* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
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*
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******************************************************************************/
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acpi_status acpi_hw_extended_sleep(u8 sleep_state)
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{
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acpi_status status;
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u8 sleep_type_value;
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u64 sleep_status;
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ACPI_FUNCTION_TRACE(hw_extended_sleep);
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/* Extended sleep registers must be valid */
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if (!acpi_gbl_FADT.sleep_control.address ||
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!acpi_gbl_FADT.sleep_status.address) {
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return_ACPI_STATUS(AE_NOT_EXIST);
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}
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/* Clear wake status (WAK_STS) */
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status = acpi_write(ACPI_X_WAKE_STATUS, &acpi_gbl_FADT.sleep_status);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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acpi_gbl_system_awake_and_running = FALSE;
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/* Execute the _GTS method (Going To Sleep) */
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acpi_hw_execute_sleep_method(METHOD_NAME__GTS, sleep_state);
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/* Flush caches, as per ACPI specification */
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ACPI_FLUSH_CPU_CACHE();
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/*
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* Set the SLP_TYP and SLP_EN bits.
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*
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* Note: We only use the first value returned by the \_Sx method
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* (acpi_gbl_sleep_type_a) - As per ACPI specification.
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*/
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ACPI_DEBUG_PRINT((ACPI_DB_INIT,
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"Entering sleep state [S%u]\n", sleep_state));
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sleep_type_value =
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((acpi_gbl_sleep_type_a << ACPI_X_SLEEP_TYPE_POSITION) &
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ACPI_X_SLEEP_TYPE_MASK);
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status = acpi_write((sleep_type_value | ACPI_X_SLEEP_ENABLE),
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&acpi_gbl_FADT.sleep_control);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/* Wait for transition back to Working State */
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do {
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status = acpi_read(&sleep_status, &acpi_gbl_FADT.sleep_status);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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} while (!(((u8)sleep_status) & ACPI_X_WAKE_STATUS));
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return_ACPI_STATUS(AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_hw_extended_wake_prep
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*
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* PARAMETERS: sleep_state - Which sleep state we just exited
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*
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* RETURN: Status
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*
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* DESCRIPTION: Perform first part of OS-independent ACPI cleanup after
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* a sleep. Called with interrupts ENABLED.
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*
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******************************************************************************/
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acpi_status acpi_hw_extended_wake_prep(u8 sleep_state)
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{
|
||||
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_sleep_method(METHOD_NAME__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_sleep_method(METHOD_NAME__SST, ACPI_SST_WAKING);
|
||||
acpi_hw_execute_sleep_method(METHOD_NAME__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_sleep_method(METHOD_NAME__SST, ACPI_SST_WORKING);
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user