Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
9
drivers/acpi/hardware/Makefile
Normal file
9
drivers/acpi/hardware/Makefile
Normal file
@@ -0,0 +1,9 @@
|
||||
#
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# Makefile for all Linux ACPI interpreter subdirectories
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#
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obj-y := hwacpi.o hwgpe.o hwregs.o hwsleep.o
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obj-$(ACPI_FUTURE_USAGE) += hwtimer.o
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EXTRA_CFLAGS += $(ACPI_CFLAGS)
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230
drivers/acpi/hardware/hwacpi.c
Normal file
230
drivers/acpi/hardware/hwacpi.c
Normal file
@@ -0,0 +1,230 @@
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/******************************************************************************
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||||
*
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||||
* Module Name: hwacpi - ACPI Hardware Initialization/Mode Interface
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2005, R. Byron Moore
|
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* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions, and the following disclaimer,
|
||||
* without modification.
|
||||
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
||||
* substantially similar to the "NO WARRANTY" disclaimer below
|
||||
* ("Disclaimer") and any redistribution must be conditioned upon
|
||||
* including a substantially similar Disclaimer requirement for further
|
||||
* binary redistribution.
|
||||
* 3. Neither the names of the above-listed copyright holders nor the names
|
||||
* of any contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License ("GPL") version 2 as published by the Free
|
||||
* Software Foundation.
|
||||
*
|
||||
* NO WARRANTY
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
||||
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGES.
|
||||
*/
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||||
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#include <acpi/acpi.h>
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#define _COMPONENT ACPI_HARDWARE
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ACPI_MODULE_NAME ("hwacpi")
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||||
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||||
/******************************************************************************
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||||
*
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||||
* FUNCTION: acpi_hw_initialize
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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: Initialize and validate various ACPI registers
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||||
*
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||||
******************************************************************************/
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||||
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acpi_status
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acpi_hw_initialize (
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void)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE ("hw_initialize");
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||||
/* We must have the ACPI tables by the time we get here */
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||||
|
||||
if (!acpi_gbl_FADT) {
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "A FADT is not loaded\n"));
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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||||
/* Sanity check the FADT for valid values */
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status = acpi_ut_validate_fadt ();
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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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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*
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||||
* FUNCTION: acpi_hw_set_mode
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*
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* PARAMETERS: Mode - SYS_MODE_ACPI or SYS_MODE_LEGACY
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||||
*
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* RETURN: Status
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||||
*
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* DESCRIPTION: Transitions the system into the requested mode.
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||||
*
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******************************************************************************/
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acpi_status
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acpi_hw_set_mode (
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u32 mode)
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||||
{
|
||||
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||||
acpi_status status;
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||||
u32 retry;
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||||
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||||
|
||||
ACPI_FUNCTION_TRACE ("hw_set_mode");
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||||
/*
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||||
* ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
|
||||
* system does not support mode transition.
|
||||
*/
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||||
if (!acpi_gbl_FADT->smi_cmd) {
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ACPI_REPORT_ERROR (("No SMI_CMD in FADT, mode transition failed.\n"));
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return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
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}
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||||
|
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/*
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||||
* ACPI 2.0 clarified the meaning of ACPI_ENABLE and ACPI_DISABLE
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* in FADT: If it is zero, enabling or disabling is not supported.
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* As old systems may have used zero for mode transition,
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||||
* we make sure both the numbers are zero to determine these
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* transitions are not supported.
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*/
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if (!acpi_gbl_FADT->acpi_enable && !acpi_gbl_FADT->acpi_disable) {
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ACPI_REPORT_ERROR (("No ACPI mode transition supported in this system (enable/disable both zero)\n"));
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return_ACPI_STATUS (AE_OK);
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}
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||||
switch (mode) {
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case ACPI_SYS_MODE_ACPI:
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/* BIOS should have disabled ALL fixed and GP events */
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status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd,
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(u32) acpi_gbl_FADT->acpi_enable, 8);
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Attempting to enable ACPI mode\n"));
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break;
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case ACPI_SYS_MODE_LEGACY:
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/*
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* BIOS should clear all fixed status bits and restore fixed event
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* enable bits to default
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*/
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status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd,
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(u32) acpi_gbl_FADT->acpi_disable, 8);
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
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"Attempting to enable Legacy (non-ACPI) mode\n"));
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break;
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default:
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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|
||||
if (ACPI_FAILURE (status)) {
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ACPI_REPORT_ERROR (("Could not write mode change, %s\n", acpi_format_exception (status)));
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return_ACPI_STATUS (status);
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}
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||||
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||||
/*
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||||
* Some hardware takes a LONG time to switch modes. Give them 3 sec to
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* do so, but allow faster systems to proceed more quickly.
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*/
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retry = 3000;
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while (retry) {
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if (acpi_hw_get_mode() == mode) {
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Mode %X successfully enabled\n", mode));
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return_ACPI_STATUS (AE_OK);
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}
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acpi_os_stall(1000);
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retry--;
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}
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ACPI_REPORT_ERROR (("Hardware never changed modes\n"));
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return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
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}
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||||
|
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/******************************************************************************
|
||||
*
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||||
* FUNCTION: acpi_hw_get_mode
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*
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* PARAMETERS: none
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||||
*
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* RETURN: SYS_MODE_ACPI or SYS_MODE_LEGACY
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*
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* DESCRIPTION: Return current operating state of system. Determined by
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* querying the SCI_EN bit.
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*
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******************************************************************************/
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u32
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acpi_hw_get_mode (void)
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||||
{
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acpi_status status;
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u32 value;
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||||
|
||||
|
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ACPI_FUNCTION_TRACE ("hw_get_mode");
|
||||
|
||||
|
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/*
|
||||
* ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
|
||||
* system does not support mode transition.
|
||||
*/
|
||||
if (!acpi_gbl_FADT->smi_cmd) {
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return_VALUE (ACPI_SYS_MODE_ACPI);
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}
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status = acpi_get_register (ACPI_BITREG_SCI_ENABLE, &value, ACPI_MTX_LOCK);
|
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if (ACPI_FAILURE (status)) {
|
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return_VALUE (ACPI_SYS_MODE_LEGACY);
|
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}
|
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|
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if (value) {
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return_VALUE (ACPI_SYS_MODE_ACPI);
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}
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else {
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return_VALUE (ACPI_SYS_MODE_LEGACY);
|
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}
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||||
}
|
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444
drivers/acpi/hardware/hwgpe.c
Normal file
444
drivers/acpi/hardware/hwgpe.c
Normal file
@@ -0,0 +1,444 @@
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* Module Name: hwgpe - Low level GPE enable/disable/clear functions
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||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Copyright (C) 2000 - 2005, R. Byron Moore
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions, and the following disclaimer,
|
||||
* without modification.
|
||||
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
||||
* substantially similar to the "NO WARRANTY" disclaimer below
|
||||
* ("Disclaimer") and any redistribution must be conditioned upon
|
||||
* including a substantially similar Disclaimer requirement for further
|
||||
* binary redistribution.
|
||||
* 3. Neither the names of the above-listed copyright holders nor the names
|
||||
* of any contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License ("GPL") version 2 as published by the Free
|
||||
* Software Foundation.
|
||||
*
|
||||
* NO WARRANTY
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
||||
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGES.
|
||||
*/
|
||||
|
||||
#include <acpi/acpi.h>
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#include <acpi/acevents.h>
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||||
|
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#define _COMPONENT ACPI_HARDWARE
|
||||
ACPI_MODULE_NAME ("hwgpe")
|
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|
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|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_write_gpe_enable_reg
|
||||
*
|
||||
* PARAMETERS: gpe_event_info - Info block for the GPE to be enabled
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Write a GPE enable register. Note: The bit for this GPE must
|
||||
* already be cleared or set in the parent register
|
||||
* enable_for_run mask.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_write_gpe_enable_reg (
|
||||
struct acpi_gpe_event_info *gpe_event_info)
|
||||
{
|
||||
struct acpi_gpe_register_info *gpe_register_info;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_ENTRY ();
|
||||
|
||||
|
||||
/* Get the info block for the entire GPE register */
|
||||
|
||||
gpe_register_info = gpe_event_info->register_info;
|
||||
if (!gpe_register_info) {
|
||||
return (AE_NOT_EXIST);
|
||||
}
|
||||
|
||||
/* Write the entire GPE (runtime) enable register */
|
||||
|
||||
status = acpi_hw_low_level_write (8, gpe_register_info->enable_for_run,
|
||||
&gpe_register_info->enable_address);
|
||||
|
||||
return (status);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_clear_gpe
|
||||
*
|
||||
* PARAMETERS: gpe_event_info - Info block for the GPE to be cleared
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Clear the status bit for a single GPE.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_clear_gpe (
|
||||
struct acpi_gpe_event_info *gpe_event_info)
|
||||
{
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_ENTRY ();
|
||||
|
||||
|
||||
/*
|
||||
* Write a one to the appropriate bit in the status register to
|
||||
* clear this GPE.
|
||||
*/
|
||||
status = acpi_hw_low_level_write (8, gpe_event_info->register_bit,
|
||||
&gpe_event_info->register_info->status_address);
|
||||
|
||||
return (status);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_get_gpe_status
|
||||
*
|
||||
* PARAMETERS: gpe_event_info - Info block for the GPE to queried
|
||||
* event_status - Where the GPE status is returned
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Return the status of a single GPE.
|
||||
*
|
||||
******************************************************************************/
|
||||
#ifdef ACPI_FUTURE_USAGE
|
||||
acpi_status
|
||||
acpi_hw_get_gpe_status (
|
||||
struct acpi_gpe_event_info *gpe_event_info,
|
||||
acpi_event_status *event_status)
|
||||
{
|
||||
u32 in_byte;
|
||||
u8 register_bit;
|
||||
struct acpi_gpe_register_info *gpe_register_info;
|
||||
acpi_status status;
|
||||
acpi_event_status local_event_status = 0;
|
||||
|
||||
|
||||
ACPI_FUNCTION_ENTRY ();
|
||||
|
||||
|
||||
if (!event_status) {
|
||||
return (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
/* Get the info block for the entire GPE register */
|
||||
|
||||
gpe_register_info = gpe_event_info->register_info;
|
||||
|
||||
/* Get the register bitmask for this GPE */
|
||||
|
||||
register_bit = gpe_event_info->register_bit;
|
||||
|
||||
/* GPE currently enabled? (enabled for runtime?) */
|
||||
|
||||
if (register_bit & gpe_register_info->enable_for_run) {
|
||||
local_event_status |= ACPI_EVENT_FLAG_ENABLED;
|
||||
}
|
||||
|
||||
/* GPE enabled for wake? */
|
||||
|
||||
if (register_bit & gpe_register_info->enable_for_wake) {
|
||||
local_event_status |= ACPI_EVENT_FLAG_WAKE_ENABLED;
|
||||
}
|
||||
|
||||
/* GPE currently active (status bit == 1)? */
|
||||
|
||||
status = acpi_hw_low_level_read (8, &in_byte, &gpe_register_info->status_address);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
if (register_bit & in_byte) {
|
||||
local_event_status |= ACPI_EVENT_FLAG_SET;
|
||||
}
|
||||
|
||||
/* Set return value */
|
||||
|
||||
(*event_status) = local_event_status;
|
||||
|
||||
|
||||
unlock_and_exit:
|
||||
return (status);
|
||||
}
|
||||
#endif /* ACPI_FUTURE_USAGE */
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_disable_gpe_block
|
||||
*
|
||||
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
|
||||
* gpe_block - Gpe Block info
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Disable all GPEs within a GPE block
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_disable_gpe_block (
|
||||
struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
||||
struct acpi_gpe_block_info *gpe_block)
|
||||
{
|
||||
u32 i;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
/* Examine each GPE Register within the block */
|
||||
|
||||
for (i = 0; i < gpe_block->register_count; i++) {
|
||||
/* Disable all GPEs in this register */
|
||||
|
||||
status = acpi_hw_low_level_write (8, 0x00,
|
||||
&gpe_block->register_info[i].enable_address);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return (status);
|
||||
}
|
||||
}
|
||||
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_clear_gpe_block
|
||||
*
|
||||
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
|
||||
* gpe_block - Gpe Block info
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Clear status bits for all GPEs within a GPE block
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_clear_gpe_block (
|
||||
struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
||||
struct acpi_gpe_block_info *gpe_block)
|
||||
{
|
||||
u32 i;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
/* Examine each GPE Register within the block */
|
||||
|
||||
for (i = 0; i < gpe_block->register_count; i++) {
|
||||
/* Clear status on all GPEs in this register */
|
||||
|
||||
status = acpi_hw_low_level_write (8, 0xFF,
|
||||
&gpe_block->register_info[i].status_address);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return (status);
|
||||
}
|
||||
}
|
||||
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_enable_runtime_gpe_block
|
||||
*
|
||||
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
|
||||
* gpe_block - Gpe Block info
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Enable all "runtime" GPEs within a GPE block. (Includes
|
||||
* combination wake/run GPEs.)
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_enable_runtime_gpe_block (
|
||||
struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
||||
struct acpi_gpe_block_info *gpe_block)
|
||||
{
|
||||
u32 i;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
/* NOTE: assumes that all GPEs are currently disabled */
|
||||
|
||||
/* Examine each GPE Register within the block */
|
||||
|
||||
for (i = 0; i < gpe_block->register_count; i++) {
|
||||
if (!gpe_block->register_info[i].enable_for_run) {
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Enable all "runtime" GPEs in this register */
|
||||
|
||||
status = acpi_hw_low_level_write (8, gpe_block->register_info[i].enable_for_run,
|
||||
&gpe_block->register_info[i].enable_address);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return (status);
|
||||
}
|
||||
}
|
||||
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_enable_wakeup_gpe_block
|
||||
*
|
||||
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
|
||||
* gpe_block - Gpe Block info
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Enable all "wake" GPEs within a GPE block. (Includes
|
||||
* combination wake/run GPEs.)
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_enable_wakeup_gpe_block (
|
||||
struct acpi_gpe_xrupt_info *gpe_xrupt_info,
|
||||
struct acpi_gpe_block_info *gpe_block)
|
||||
{
|
||||
u32 i;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
/* Examine each GPE Register within the block */
|
||||
|
||||
for (i = 0; i < gpe_block->register_count; i++) {
|
||||
if (!gpe_block->register_info[i].enable_for_wake) {
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Enable all "wake" GPEs in this register */
|
||||
|
||||
status = acpi_hw_low_level_write (8, gpe_block->register_info[i].enable_for_wake,
|
||||
&gpe_block->register_info[i].enable_address);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return (status);
|
||||
}
|
||||
}
|
||||
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_disable_all_gpes
|
||||
*
|
||||
* PARAMETERS: Flags - ACPI_NOT_ISR or ACPI_ISR
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Disable and clear all GPEs
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_disable_all_gpes (
|
||||
u32 flags)
|
||||
{
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("hw_disable_all_gpes");
|
||||
|
||||
|
||||
status = acpi_ev_walk_gpe_list (acpi_hw_disable_gpe_block, flags);
|
||||
status = acpi_ev_walk_gpe_list (acpi_hw_clear_gpe_block, flags);
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_enable_all_runtime_gpes
|
||||
*
|
||||
* PARAMETERS: Flags - ACPI_NOT_ISR or ACPI_ISR
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Enable all GPEs of the given type
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_enable_all_runtime_gpes (
|
||||
u32 flags)
|
||||
{
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("hw_enable_all_runtime_gpes");
|
||||
|
||||
|
||||
status = acpi_ev_walk_gpe_list (acpi_hw_enable_runtime_gpe_block, flags);
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_enable_all_wakeup_gpes
|
||||
*
|
||||
* PARAMETERS: Flags - ACPI_NOT_ISR or ACPI_ISR
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Enable all GPEs of the given type
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_enable_all_wakeup_gpes (
|
||||
u32 flags)
|
||||
{
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("hw_enable_all_wakeup_gpes");
|
||||
|
||||
|
||||
status = acpi_ev_walk_gpe_list (acpi_hw_enable_wakeup_gpe_block, flags);
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
850
drivers/acpi/hardware/hwregs.c
Normal file
850
drivers/acpi/hardware/hwregs.c
Normal file
@@ -0,0 +1,850 @@
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* Module Name: hwregs - Read/write access functions for the various ACPI
|
||||
* control and status registers.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
/*
|
||||
* Copyright (C) 2000 - 2005, R. Byron Moore
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions, and the following disclaimer,
|
||||
* without modification.
|
||||
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
||||
* substantially similar to the "NO WARRANTY" disclaimer below
|
||||
* ("Disclaimer") and any redistribution must be conditioned upon
|
||||
* including a substantially similar Disclaimer requirement for further
|
||||
* binary redistribution.
|
||||
* 3. Neither the names of the above-listed copyright holders nor the names
|
||||
* of any contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License ("GPL") version 2 as published by the Free
|
||||
* Software Foundation.
|
||||
*
|
||||
* NO WARRANTY
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
||||
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGES.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
|
||||
#include <acpi/acpi.h>
|
||||
#include <acpi/acnamesp.h>
|
||||
#include <acpi/acevents.h>
|
||||
|
||||
#define _COMPONENT ACPI_HARDWARE
|
||||
ACPI_MODULE_NAME ("hwregs")
|
||||
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_clear_acpi_status
|
||||
*
|
||||
* PARAMETERS: Flags - Lock the hardware or not
|
||||
*
|
||||
* RETURN: none
|
||||
*
|
||||
* DESCRIPTION: Clears all fixed and general purpose status bits
|
||||
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_clear_acpi_status (
|
||||
u32 flags)
|
||||
{
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("hw_clear_acpi_status");
|
||||
|
||||
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "About to write %04X to %04X\n",
|
||||
ACPI_BITMASK_ALL_FIXED_STATUS,
|
||||
(u16) acpi_gbl_FADT->xpm1a_evt_blk.address));
|
||||
|
||||
if (flags & ACPI_MTX_LOCK) {
|
||||
status = acpi_ut_acquire_mutex (ACPI_MTX_HARDWARE);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
}
|
||||
|
||||
status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_STATUS,
|
||||
ACPI_BITMASK_ALL_FIXED_STATUS);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
/* Clear the fixed events */
|
||||
|
||||
if (acpi_gbl_FADT->xpm1b_evt_blk.address) {
|
||||
status = acpi_hw_low_level_write (16, ACPI_BITMASK_ALL_FIXED_STATUS,
|
||||
&acpi_gbl_FADT->xpm1b_evt_blk);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
}
|
||||
|
||||
/* Clear the GPE Bits in all GPE registers in all GPE blocks */
|
||||
|
||||
status = acpi_ev_walk_gpe_list (acpi_hw_clear_gpe_block, ACPI_ISR);
|
||||
|
||||
unlock_and_exit:
|
||||
if (flags & ACPI_MTX_LOCK) {
|
||||
(void) acpi_ut_release_mutex (ACPI_MTX_HARDWARE);
|
||||
}
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_get_sleep_type_data
|
||||
*
|
||||
* PARAMETERS: sleep_state - Numeric sleep state
|
||||
* *sleep_type_a - Where SLP_TYPa is returned
|
||||
* *sleep_type_b - Where SLP_TYPb is returned
|
||||
*
|
||||
* RETURN: Status - ACPI status
|
||||
*
|
||||
* DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested sleep
|
||||
* state.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_get_sleep_type_data (
|
||||
u8 sleep_state,
|
||||
u8 *sleep_type_a,
|
||||
u8 *sleep_type_b)
|
||||
{
|
||||
acpi_status status = AE_OK;
|
||||
struct acpi_parameter_info info;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("acpi_get_sleep_type_data");
|
||||
|
||||
|
||||
/*
|
||||
* Validate parameters
|
||||
*/
|
||||
if ((sleep_state > ACPI_S_STATES_MAX) ||
|
||||
!sleep_type_a || !sleep_type_b) {
|
||||
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
/*
|
||||
* Evaluate the namespace object containing the values for this state
|
||||
*/
|
||||
info.parameters = NULL;
|
||||
status = acpi_ns_evaluate_by_name ((char *) acpi_gbl_sleep_state_names[sleep_state],
|
||||
&info);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s while evaluating sleep_state [%s]\n",
|
||||
acpi_format_exception (status), acpi_gbl_sleep_state_names[sleep_state]));
|
||||
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
/* Must have a return object */
|
||||
|
||||
if (!info.return_object) {
|
||||
ACPI_REPORT_ERROR (("Missing Sleep State object\n"));
|
||||
status = AE_NOT_EXIST;
|
||||
}
|
||||
|
||||
/* It must be of type Package */
|
||||
|
||||
else if (ACPI_GET_OBJECT_TYPE (info.return_object) != ACPI_TYPE_PACKAGE) {
|
||||
ACPI_REPORT_ERROR (("Sleep State object not a Package\n"));
|
||||
status = AE_AML_OPERAND_TYPE;
|
||||
}
|
||||
|
||||
/* The package must have at least two elements */
|
||||
|
||||
else if (info.return_object->package.count < 2) {
|
||||
ACPI_REPORT_ERROR (("Sleep State package does not have at least two elements\n"));
|
||||
status = AE_AML_NO_OPERAND;
|
||||
}
|
||||
|
||||
/* The first two elements must both be of type Integer */
|
||||
|
||||
else if ((ACPI_GET_OBJECT_TYPE (info.return_object->package.elements[0]) != ACPI_TYPE_INTEGER) ||
|
||||
(ACPI_GET_OBJECT_TYPE (info.return_object->package.elements[1]) != ACPI_TYPE_INTEGER)) {
|
||||
ACPI_REPORT_ERROR (("Sleep State package elements are not both Integers (%s, %s)\n",
|
||||
acpi_ut_get_object_type_name (info.return_object->package.elements[0]),
|
||||
acpi_ut_get_object_type_name (info.return_object->package.elements[1])));
|
||||
status = AE_AML_OPERAND_TYPE;
|
||||
}
|
||||
else {
|
||||
/*
|
||||
* Valid _Sx_ package size, type, and value
|
||||
*/
|
||||
*sleep_type_a = (u8) (info.return_object->package.elements[0])->integer.value;
|
||||
*sleep_type_b = (u8) (info.return_object->package.elements[1])->integer.value;
|
||||
}
|
||||
|
||||
if (ACPI_FAILURE (status)) {
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
||||
"While evaluating sleep_state [%s], bad Sleep object %p type %s\n",
|
||||
acpi_gbl_sleep_state_names[sleep_state], info.return_object,
|
||||
acpi_ut_get_object_type_name (info.return_object)));
|
||||
}
|
||||
|
||||
acpi_ut_remove_reference (info.return_object);
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
EXPORT_SYMBOL(acpi_get_sleep_type_data);
|
||||
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_get_register_bit_mask
|
||||
*
|
||||
* PARAMETERS: register_id - Index of ACPI Register to access
|
||||
*
|
||||
* RETURN: The bit mask to be used when accessing the register
|
||||
*
|
||||
* DESCRIPTION: Map register_id into a register bit mask.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
struct acpi_bit_register_info *
|
||||
acpi_hw_get_bit_register_info (
|
||||
u32 register_id)
|
||||
{
|
||||
ACPI_FUNCTION_NAME ("hw_get_bit_register_info");
|
||||
|
||||
|
||||
if (register_id > ACPI_BITREG_MAX) {
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid bit_register ID: %X\n", register_id));
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
return (&acpi_gbl_bit_register_info[register_id]);
|
||||
}
|
||||
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_get_register
|
||||
*
|
||||
* PARAMETERS: register_id - ID of ACPI bit_register to access
|
||||
* return_value - Value that was read from the register
|
||||
* Flags - Lock the hardware or not
|
||||
*
|
||||
* RETURN: Status and the value read from specified Register. Value
|
||||
* returned is normalized to bit0 (is shifted all the way right)
|
||||
*
|
||||
* DESCRIPTION: ACPI bit_register read function.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_get_register (
|
||||
u32 register_id,
|
||||
u32 *return_value,
|
||||
u32 flags)
|
||||
{
|
||||
u32 register_value = 0;
|
||||
struct acpi_bit_register_info *bit_reg_info;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("acpi_get_register");
|
||||
|
||||
|
||||
/* Get the info structure corresponding to the requested ACPI Register */
|
||||
|
||||
bit_reg_info = acpi_hw_get_bit_register_info (register_id);
|
||||
if (!bit_reg_info) {
|
||||
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
if (flags & ACPI_MTX_LOCK) {
|
||||
status = acpi_ut_acquire_mutex (ACPI_MTX_HARDWARE);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
}
|
||||
|
||||
/* Read from the register */
|
||||
|
||||
status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK,
|
||||
bit_reg_info->parent_register, ®ister_value);
|
||||
|
||||
if (flags & ACPI_MTX_LOCK) {
|
||||
(void) acpi_ut_release_mutex (ACPI_MTX_HARDWARE);
|
||||
}
|
||||
|
||||
if (ACPI_SUCCESS (status)) {
|
||||
/* Normalize the value that was read */
|
||||
|
||||
register_value = ((register_value & bit_reg_info->access_bit_mask)
|
||||
>> bit_reg_info->bit_position);
|
||||
|
||||
*return_value = register_value;
|
||||
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Read value %8.8X register %X\n",
|
||||
register_value, bit_reg_info->parent_register));
|
||||
}
|
||||
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
EXPORT_SYMBOL(acpi_get_register);
|
||||
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_set_register
|
||||
*
|
||||
* PARAMETERS: register_id - ID of ACPI bit_register to access
|
||||
* Value - (only used on write) value to write to the
|
||||
* Register, NOT pre-normalized to the bit pos
|
||||
* Flags - Lock the hardware or not
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: ACPI Bit Register write function.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_set_register (
|
||||
u32 register_id,
|
||||
u32 value,
|
||||
u32 flags)
|
||||
{
|
||||
u32 register_value = 0;
|
||||
struct acpi_bit_register_info *bit_reg_info;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE_U32 ("acpi_set_register", register_id);
|
||||
|
||||
|
||||
/* Get the info structure corresponding to the requested ACPI Register */
|
||||
|
||||
bit_reg_info = acpi_hw_get_bit_register_info (register_id);
|
||||
if (!bit_reg_info) {
|
||||
ACPI_REPORT_ERROR (("Bad ACPI HW register_id: %X\n", register_id));
|
||||
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
if (flags & ACPI_MTX_LOCK) {
|
||||
status = acpi_ut_acquire_mutex (ACPI_MTX_HARDWARE);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
}
|
||||
|
||||
/* Always do a register read first so we can insert the new bits */
|
||||
|
||||
status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK,
|
||||
bit_reg_info->parent_register, ®ister_value);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
/*
|
||||
* Decode the Register ID
|
||||
* Register ID = [Register block ID] | [bit ID]
|
||||
*
|
||||
* Check bit ID to fine locate Register offset.
|
||||
* Check Mask to determine Register offset, and then read-write.
|
||||
*/
|
||||
switch (bit_reg_info->parent_register) {
|
||||
case ACPI_REGISTER_PM1_STATUS:
|
||||
|
||||
/*
|
||||
* Status Registers are different from the rest. Clear by
|
||||
* writing 1, and writing 0 has no effect. So, the only relevant
|
||||
* information is the single bit we're interested in, all others should
|
||||
* be written as 0 so they will be left unchanged.
|
||||
*/
|
||||
value = ACPI_REGISTER_PREPARE_BITS (value,
|
||||
bit_reg_info->bit_position, bit_reg_info->access_bit_mask);
|
||||
if (value) {
|
||||
status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
|
||||
ACPI_REGISTER_PM1_STATUS, (u16) value);
|
||||
register_value = 0;
|
||||
}
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM1_ENABLE:
|
||||
|
||||
ACPI_REGISTER_INSERT_VALUE (register_value, bit_reg_info->bit_position,
|
||||
bit_reg_info->access_bit_mask, value);
|
||||
|
||||
status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
|
||||
ACPI_REGISTER_PM1_ENABLE, (u16) register_value);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM1_CONTROL:
|
||||
|
||||
/*
|
||||
* Write the PM1 Control register.
|
||||
* Note that at this level, the fact that there are actually TWO
|
||||
* registers (A and B - and B may not exist) is abstracted.
|
||||
*/
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "PM1 control: Read %X\n", register_value));
|
||||
|
||||
ACPI_REGISTER_INSERT_VALUE (register_value, bit_reg_info->bit_position,
|
||||
bit_reg_info->access_bit_mask, value);
|
||||
|
||||
status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
|
||||
ACPI_REGISTER_PM1_CONTROL, (u16) register_value);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM2_CONTROL:
|
||||
|
||||
status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK,
|
||||
ACPI_REGISTER_PM2_CONTROL, ®ister_value);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "PM2 control: Read %X from %8.8X%8.8X\n",
|
||||
register_value,
|
||||
ACPI_FORMAT_UINT64 (acpi_gbl_FADT->xpm2_cnt_blk.address)));
|
||||
|
||||
ACPI_REGISTER_INSERT_VALUE (register_value, bit_reg_info->bit_position,
|
||||
bit_reg_info->access_bit_mask, value);
|
||||
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "About to write %4.4X to %8.8X%8.8X\n",
|
||||
register_value,
|
||||
ACPI_FORMAT_UINT64 (acpi_gbl_FADT->xpm2_cnt_blk.address)));
|
||||
|
||||
status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
|
||||
ACPI_REGISTER_PM2_CONTROL, (u8) (register_value));
|
||||
break;
|
||||
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
|
||||
unlock_and_exit:
|
||||
|
||||
if (flags & ACPI_MTX_LOCK) {
|
||||
(void) acpi_ut_release_mutex (ACPI_MTX_HARDWARE);
|
||||
}
|
||||
|
||||
/* Normalize the value that was read */
|
||||
|
||||
ACPI_DEBUG_EXEC (register_value = ((register_value & bit_reg_info->access_bit_mask) >> bit_reg_info->bit_position));
|
||||
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Set bits: %8.8X actual %8.8X register %X\n",
|
||||
value, register_value, bit_reg_info->parent_register));
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
EXPORT_SYMBOL(acpi_set_register);
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_register_read
|
||||
*
|
||||
* PARAMETERS: use_lock - Mutex hw access
|
||||
* register_id - register_iD + Offset
|
||||
* return_value - Value that was read from the register
|
||||
*
|
||||
* RETURN: Status and the value read.
|
||||
*
|
||||
* DESCRIPTION: Acpi register read function. Registers are read at the
|
||||
* given offset.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_register_read (
|
||||
u8 use_lock,
|
||||
u32 register_id,
|
||||
u32 *return_value)
|
||||
{
|
||||
u32 value1 = 0;
|
||||
u32 value2 = 0;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("hw_register_read");
|
||||
|
||||
|
||||
if (ACPI_MTX_LOCK == use_lock) {
|
||||
status = acpi_ut_acquire_mutex (ACPI_MTX_HARDWARE);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
}
|
||||
|
||||
switch (register_id) {
|
||||
case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */
|
||||
|
||||
status = acpi_hw_low_level_read (16, &value1, &acpi_gbl_FADT->xpm1a_evt_blk);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
/* PM1B is optional */
|
||||
|
||||
status = acpi_hw_low_level_read (16, &value2, &acpi_gbl_FADT->xpm1b_evt_blk);
|
||||
value1 |= value2;
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM1_ENABLE: /* 16-bit access */
|
||||
|
||||
status = acpi_hw_low_level_read (16, &value1, &acpi_gbl_xpm1a_enable);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
/* PM1B is optional */
|
||||
|
||||
status = acpi_hw_low_level_read (16, &value2, &acpi_gbl_xpm1b_enable);
|
||||
value1 |= value2;
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */
|
||||
|
||||
status = acpi_hw_low_level_read (16, &value1, &acpi_gbl_FADT->xpm1a_cnt_blk);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
status = acpi_hw_low_level_read (16, &value2, &acpi_gbl_FADT->xpm1b_cnt_blk);
|
||||
value1 |= value2;
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
|
||||
|
||||
status = acpi_hw_low_level_read (8, &value1, &acpi_gbl_FADT->xpm2_cnt_blk);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM_TIMER: /* 32-bit access */
|
||||
|
||||
status = acpi_hw_low_level_read (32, &value1, &acpi_gbl_FADT->xpm_tmr_blk);
|
||||
break;
|
||||
|
||||
case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */
|
||||
|
||||
status = acpi_os_read_port (acpi_gbl_FADT->smi_cmd, &value1, 8);
|
||||
break;
|
||||
|
||||
default:
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Register ID: %X\n", register_id));
|
||||
status = AE_BAD_PARAMETER;
|
||||
break;
|
||||
}
|
||||
|
||||
unlock_and_exit:
|
||||
if (ACPI_MTX_LOCK == use_lock) {
|
||||
(void) acpi_ut_release_mutex (ACPI_MTX_HARDWARE);
|
||||
}
|
||||
|
||||
if (ACPI_SUCCESS (status)) {
|
||||
*return_value = value1;
|
||||
}
|
||||
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_register_write
|
||||
*
|
||||
* PARAMETERS: use_lock - Mutex hw access
|
||||
* register_id - register_iD + Offset
|
||||
* Value - The value to write
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Acpi register Write function. Registers are written at the
|
||||
* given offset.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_register_write (
|
||||
u8 use_lock,
|
||||
u32 register_id,
|
||||
u32 value)
|
||||
{
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("hw_register_write");
|
||||
|
||||
|
||||
if (ACPI_MTX_LOCK == use_lock) {
|
||||
status = acpi_ut_acquire_mutex (ACPI_MTX_HARDWARE);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
}
|
||||
|
||||
switch (register_id) {
|
||||
case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */
|
||||
|
||||
status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1a_evt_blk);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
/* PM1B is optional */
|
||||
|
||||
status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1b_evt_blk);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM1_ENABLE: /* 16-bit access*/
|
||||
|
||||
status = acpi_hw_low_level_write (16, value, &acpi_gbl_xpm1a_enable);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
/* PM1B is optional */
|
||||
|
||||
status = acpi_hw_low_level_write (16, value, &acpi_gbl_xpm1b_enable);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */
|
||||
|
||||
status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1a_cnt_blk);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1b_cnt_blk);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM1A_CONTROL: /* 16-bit access */
|
||||
|
||||
status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1a_cnt_blk);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM1B_CONTROL: /* 16-bit access */
|
||||
|
||||
status = acpi_hw_low_level_write (16, value, &acpi_gbl_FADT->xpm1b_cnt_blk);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
|
||||
|
||||
status = acpi_hw_low_level_write (8, value, &acpi_gbl_FADT->xpm2_cnt_blk);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_PM_TIMER: /* 32-bit access */
|
||||
|
||||
status = acpi_hw_low_level_write (32, value, &acpi_gbl_FADT->xpm_tmr_blk);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */
|
||||
|
||||
/* SMI_CMD is currently always in IO space */
|
||||
|
||||
status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd, value, 8);
|
||||
break;
|
||||
|
||||
|
||||
default:
|
||||
status = AE_BAD_PARAMETER;
|
||||
break;
|
||||
}
|
||||
|
||||
unlock_and_exit:
|
||||
if (ACPI_MTX_LOCK == use_lock) {
|
||||
(void) acpi_ut_release_mutex (ACPI_MTX_HARDWARE);
|
||||
}
|
||||
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_low_level_read
|
||||
*
|
||||
* PARAMETERS: Width - 8, 16, or 32
|
||||
* Value - Where the value is returned
|
||||
* Reg - GAS register structure
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Read from either memory or IO space.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_low_level_read (
|
||||
u32 width,
|
||||
u32 *value,
|
||||
struct acpi_generic_address *reg)
|
||||
{
|
||||
u64 address;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_NAME ("hw_low_level_read");
|
||||
|
||||
|
||||
/*
|
||||
* Must have a valid pointer to a GAS structure, and
|
||||
* a non-zero address within. However, don't return an error
|
||||
* because the PM1A/B code must not fail if B isn't present.
|
||||
*/
|
||||
if (!reg) {
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
/* Get a local copy of the address. Handles possible alignment issues */
|
||||
|
||||
ACPI_MOVE_64_TO_64 (&address, ®->address);
|
||||
if (!address) {
|
||||
return (AE_OK);
|
||||
}
|
||||
*value = 0;
|
||||
|
||||
/*
|
||||
* Two address spaces supported: Memory or IO.
|
||||
* PCI_Config is not supported here because the GAS struct is insufficient
|
||||
*/
|
||||
switch (reg->address_space_id) {
|
||||
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
|
||||
|
||||
status = acpi_os_read_memory (
|
||||
(acpi_physical_address) address,
|
||||
value, width);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_ADR_SPACE_SYSTEM_IO:
|
||||
|
||||
status = acpi_os_read_port ((acpi_io_address) address,
|
||||
value, width);
|
||||
break;
|
||||
|
||||
|
||||
default:
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
||||
"Unsupported address space: %X\n", reg->address_space_id));
|
||||
return (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Read: %8.8X width %2d from %8.8X%8.8X (%s)\n",
|
||||
*value, width,
|
||||
ACPI_FORMAT_UINT64 (address),
|
||||
acpi_ut_get_region_name (reg->address_space_id)));
|
||||
|
||||
return (status);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_hw_low_level_write
|
||||
*
|
||||
* PARAMETERS: Width - 8, 16, or 32
|
||||
* Value - To be written
|
||||
* Reg - GAS register structure
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Write to either memory or IO space.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_hw_low_level_write (
|
||||
u32 width,
|
||||
u32 value,
|
||||
struct acpi_generic_address *reg)
|
||||
{
|
||||
u64 address;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_NAME ("hw_low_level_write");
|
||||
|
||||
|
||||
/*
|
||||
* Must have a valid pointer to a GAS structure, and
|
||||
* a non-zero address within. However, don't return an error
|
||||
* because the PM1A/B code must not fail if B isn't present.
|
||||
*/
|
||||
if (!reg) {
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
/* Get a local copy of the address. Handles possible alignment issues */
|
||||
|
||||
ACPI_MOVE_64_TO_64 (&address, ®->address);
|
||||
if (!address) {
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
/*
|
||||
* Two address spaces supported: Memory or IO.
|
||||
* PCI_Config is not supported here because the GAS struct is insufficient
|
||||
*/
|
||||
switch (reg->address_space_id) {
|
||||
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
|
||||
|
||||
status = acpi_os_write_memory (
|
||||
(acpi_physical_address) address,
|
||||
value, width);
|
||||
break;
|
||||
|
||||
|
||||
case ACPI_ADR_SPACE_SYSTEM_IO:
|
||||
|
||||
status = acpi_os_write_port ((acpi_io_address) address,
|
||||
value, width);
|
||||
break;
|
||||
|
||||
|
||||
default:
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
||||
"Unsupported address space: %X\n", reg->address_space_id));
|
||||
return (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Wrote: %8.8X width %2d to %8.8X%8.8X (%s)\n",
|
||||
value, width,
|
||||
ACPI_FORMAT_UINT64 (address),
|
||||
acpi_ut_get_region_name (reg->address_space_id)));
|
||||
|
||||
return (status);
|
||||
}
|
||||
582
drivers/acpi/hardware/hwsleep.c
Normal file
582
drivers/acpi/hardware/hwsleep.c
Normal file
@@ -0,0 +1,582 @@
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Copyright (C) 2000 - 2005, R. Byron Moore
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions, and the following disclaimer,
|
||||
* without modification.
|
||||
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
||||
* substantially similar to the "NO WARRANTY" disclaimer below
|
||||
* ("Disclaimer") and any redistribution must be conditioned upon
|
||||
* including a substantially similar Disclaimer requirement for further
|
||||
* binary redistribution.
|
||||
* 3. Neither the names of the above-listed copyright holders nor the names
|
||||
* of any contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License ("GPL") version 2 as published by the Free
|
||||
* Software Foundation.
|
||||
*
|
||||
* NO WARRANTY
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
||||
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGES.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
|
||||
#include <acpi/acpi.h>
|
||||
|
||||
#define _COMPONENT ACPI_HARDWARE
|
||||
ACPI_MODULE_NAME ("hwsleep")
|
||||
|
||||
|
||||
#define METHOD_NAME__BFS "\\_BFS"
|
||||
#define METHOD_NAME__GTS "\\_GTS"
|
||||
#define METHOD_NAME__PTS "\\_PTS"
|
||||
#define METHOD_NAME__SST "\\_SI._SST"
|
||||
#define METHOD_NAME__WAK "\\_WAK"
|
||||
|
||||
#define ACPI_SST_INDICATOR_OFF 0
|
||||
#define ACPI_SST_WORKING 1
|
||||
#define ACPI_SST_WAKING 2
|
||||
#define ACPI_SST_SLEEPING 3
|
||||
#define ACPI_SST_SLEEP_CONTEXT 4
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_set_firmware_waking_vector
|
||||
*
|
||||
* PARAMETERS: physical_address - Physical address of ACPI real mode
|
||||
* entry point.
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: access function for d_firmware_waking_vector field in FACS
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_set_firmware_waking_vector (
|
||||
acpi_physical_address physical_address)
|
||||
{
|
||||
|
||||
ACPI_FUNCTION_TRACE ("acpi_set_firmware_waking_vector");
|
||||
|
||||
|
||||
/* Set the vector */
|
||||
|
||||
if (acpi_gbl_common_fACS.vector_width == 32) {
|
||||
*(ACPI_CAST_PTR (u32, acpi_gbl_common_fACS.firmware_waking_vector))
|
||||
= (u32) physical_address;
|
||||
}
|
||||
else {
|
||||
*acpi_gbl_common_fACS.firmware_waking_vector
|
||||
= physical_address;
|
||||
}
|
||||
|
||||
return_ACPI_STATUS (AE_OK);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_get_firmware_waking_vector
|
||||
*
|
||||
* PARAMETERS: *physical_address - Output buffer where contents of
|
||||
* the firmware_waking_vector field of
|
||||
* the FACS will be stored.
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Access function for firmware_waking_vector field in FACS
|
||||
*
|
||||
******************************************************************************/
|
||||
#ifdef ACPI_FUTURE_USAGE
|
||||
acpi_status
|
||||
acpi_get_firmware_waking_vector (
|
||||
acpi_physical_address *physical_address)
|
||||
{
|
||||
|
||||
ACPI_FUNCTION_TRACE ("acpi_get_firmware_waking_vector");
|
||||
|
||||
|
||||
if (!physical_address) {
|
||||
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
/* Get the vector */
|
||||
|
||||
if (acpi_gbl_common_fACS.vector_width == 32) {
|
||||
*physical_address = (acpi_physical_address)
|
||||
*(ACPI_CAST_PTR (u32, acpi_gbl_common_fACS.firmware_waking_vector));
|
||||
}
|
||||
else {
|
||||
*physical_address =
|
||||
*acpi_gbl_common_fACS.firmware_waking_vector;
|
||||
}
|
||||
|
||||
return_ACPI_STATUS (AE_OK);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_enter_sleep_state_prep
|
||||
*
|
||||
* PARAMETERS: sleep_state - Which sleep state to enter
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231)
|
||||
* This function must execute with interrupts enabled.
|
||||
* We break sleeping into 2 stages so that OSPM can handle
|
||||
* various OS-specific tasks between the two steps.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_enter_sleep_state_prep (
|
||||
u8 sleep_state)
|
||||
{
|
||||
acpi_status status;
|
||||
struct acpi_object_list arg_list;
|
||||
union acpi_object arg;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state_prep");
|
||||
|
||||
|
||||
/*
|
||||
* _PSW methods could be run here to enable wake-on keyboard, LAN, etc.
|
||||
*/
|
||||
status = acpi_get_sleep_type_data (sleep_state,
|
||||
&acpi_gbl_sleep_type_a, &acpi_gbl_sleep_type_b);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
/* Setup parameter object */
|
||||
|
||||
arg_list.count = 1;
|
||||
arg_list.pointer = &arg;
|
||||
|
||||
arg.type = ACPI_TYPE_INTEGER;
|
||||
arg.integer.value = sleep_state;
|
||||
|
||||
/* Run the _PTS and _GTS methods */
|
||||
|
||||
status = acpi_evaluate_object (NULL, METHOD_NAME__PTS, &arg_list, NULL);
|
||||
if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
status = acpi_evaluate_object (NULL, METHOD_NAME__GTS, &arg_list, NULL);
|
||||
if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
/* Setup the argument to _SST */
|
||||
|
||||
switch (sleep_state) {
|
||||
case ACPI_STATE_S0:
|
||||
arg.integer.value = ACPI_SST_WORKING;
|
||||
break;
|
||||
|
||||
case ACPI_STATE_S1:
|
||||
case ACPI_STATE_S2:
|
||||
case ACPI_STATE_S3:
|
||||
arg.integer.value = ACPI_SST_SLEEPING;
|
||||
break;
|
||||
|
||||
case ACPI_STATE_S4:
|
||||
arg.integer.value = ACPI_SST_SLEEP_CONTEXT;
|
||||
break;
|
||||
|
||||
default:
|
||||
arg.integer.value = ACPI_SST_INDICATOR_OFF; /* Default is indicator off */
|
||||
break;
|
||||
}
|
||||
|
||||
/* Set the system indicators to show the desired sleep state. */
|
||||
|
||||
status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL);
|
||||
if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
|
||||
ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status)));
|
||||
}
|
||||
|
||||
return_ACPI_STATUS (AE_OK);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_enter_sleep_state
|
||||
*
|
||||
* PARAMETERS: sleep_state - Which sleep state to enter
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231)
|
||||
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status asmlinkage
|
||||
acpi_enter_sleep_state (
|
||||
u8 sleep_state)
|
||||
{
|
||||
u32 PM1Acontrol;
|
||||
u32 PM1Bcontrol;
|
||||
struct acpi_bit_register_info *sleep_type_reg_info;
|
||||
struct acpi_bit_register_info *sleep_enable_reg_info;
|
||||
u32 in_value;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state");
|
||||
|
||||
|
||||
if ((acpi_gbl_sleep_type_a > ACPI_SLEEP_TYPE_MAX) ||
|
||||
(acpi_gbl_sleep_type_b > ACPI_SLEEP_TYPE_MAX)) {
|
||||
ACPI_REPORT_ERROR (("Sleep values out of range: A=%X B=%X\n",
|
||||
acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b));
|
||||
return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
|
||||
}
|
||||
|
||||
sleep_type_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_TYPE_A);
|
||||
sleep_enable_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_ENABLE);
|
||||
|
||||
/* Clear wake status */
|
||||
|
||||
status = acpi_set_register (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
/* Clear all fixed and general purpose status bits */
|
||||
|
||||
status = acpi_hw_clear_acpi_status (ACPI_MTX_DO_NOT_LOCK);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
/*
|
||||
* 1) Disable/Clear all GPEs
|
||||
* 2) Enable all wakeup GPEs
|
||||
*/
|
||||
status = acpi_hw_disable_all_gpes (ACPI_ISR);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
acpi_gbl_system_awake_and_running = FALSE;
|
||||
|
||||
status = acpi_hw_enable_all_wakeup_gpes (ACPI_ISR);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
/* Get current value of PM1A control */
|
||||
|
||||
status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Entering sleep state [S%d]\n", sleep_state));
|
||||
|
||||
/* Clear SLP_EN and SLP_TYP fields */
|
||||
|
||||
PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask | sleep_enable_reg_info->access_bit_mask);
|
||||
PM1Bcontrol = PM1Acontrol;
|
||||
|
||||
/* Insert SLP_TYP bits */
|
||||
|
||||
PM1Acontrol |= (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position);
|
||||
PM1Bcontrol |= (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position);
|
||||
|
||||
/*
|
||||
* We split the writes of SLP_TYP and SLP_EN to workaround
|
||||
* poorly implemented hardware.
|
||||
*/
|
||||
|
||||
/* Write #1: fill in SLP_TYP data */
|
||||
|
||||
status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
/* Insert SLP_ENABLE bit */
|
||||
|
||||
PM1Acontrol |= sleep_enable_reg_info->access_bit_mask;
|
||||
PM1Bcontrol |= sleep_enable_reg_info->access_bit_mask;
|
||||
|
||||
/* Write #2: SLP_TYP + SLP_EN */
|
||||
|
||||
ACPI_FLUSH_CPU_CACHE ();
|
||||
|
||||
status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
if (sleep_state > ACPI_STATE_S3) {
|
||||
/*
|
||||
* We wanted to sleep > S3, but it didn't happen (by virtue of the fact that
|
||||
* we are still executing!)
|
||||
*
|
||||
* Wait ten seconds, then try again. This is to get S4/S5 to work on all machines.
|
||||
*
|
||||
* We wait so long to allow chipsets that poll this reg very slowly to
|
||||
* still read the right value. Ideally, this block would go
|
||||
* away entirely.
|
||||
*/
|
||||
acpi_os_stall (10000000);
|
||||
|
||||
status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL,
|
||||
sleep_enable_reg_info->access_bit_mask);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
}
|
||||
|
||||
/* Wait until we enter sleep state */
|
||||
|
||||
do {
|
||||
status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, ACPI_MTX_DO_NOT_LOCK);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
/* Spin until we wake */
|
||||
|
||||
} while (!in_value);
|
||||
|
||||
return_ACPI_STATUS (AE_OK);
|
||||
}
|
||||
EXPORT_SYMBOL(acpi_enter_sleep_state);
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_enter_sleep_state_s4bios
|
||||
*
|
||||
* PARAMETERS: None
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Perform a S4 bios request.
|
||||
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status asmlinkage
|
||||
acpi_enter_sleep_state_s4bios (
|
||||
void)
|
||||
{
|
||||
u32 in_value;
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state_s4bios");
|
||||
|
||||
|
||||
status = acpi_set_register (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
status = acpi_hw_clear_acpi_status (ACPI_MTX_DO_NOT_LOCK);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
/*
|
||||
* 1) Disable/Clear all GPEs
|
||||
* 2) Enable all wakeup GPEs
|
||||
*/
|
||||
status = acpi_hw_disable_all_gpes (ACPI_ISR);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
acpi_gbl_system_awake_and_running = FALSE;
|
||||
|
||||
status = acpi_hw_enable_all_wakeup_gpes (ACPI_ISR);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
ACPI_FLUSH_CPU_CACHE ();
|
||||
|
||||
status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd, (u32) acpi_gbl_FADT->S4bios_req, 8);
|
||||
|
||||
do {
|
||||
acpi_os_stall(1000);
|
||||
status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, ACPI_MTX_DO_NOT_LOCK);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
} while (!in_value);
|
||||
|
||||
return_ACPI_STATUS (AE_OK);
|
||||
}
|
||||
EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios);
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_leave_sleep_state
|
||||
*
|
||||
* 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_leave_sleep_state (
|
||||
u8 sleep_state)
|
||||
{
|
||||
struct acpi_object_list arg_list;
|
||||
union acpi_object arg;
|
||||
acpi_status status;
|
||||
struct acpi_bit_register_info *sleep_type_reg_info;
|
||||
struct acpi_bit_register_info *sleep_enable_reg_info;
|
||||
u32 PM1Acontrol;
|
||||
u32 PM1Bcontrol;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("acpi_leave_sleep_state");
|
||||
|
||||
|
||||
/*
|
||||
* Set SLP_TYPE and SLP_EN to state S0.
|
||||
* This is unclear from the ACPI Spec, but it is required
|
||||
* by some machines.
|
||||
*/
|
||||
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 = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_TYPE_A);
|
||||
sleep_enable_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_ENABLE);
|
||||
|
||||
/* Get current value of PM1A control */
|
||||
|
||||
status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK,
|
||||
ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol);
|
||||
if (ACPI_SUCCESS (status)) {
|
||||
/* Clear SLP_EN and SLP_TYP fields */
|
||||
|
||||
PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask |
|
||||
sleep_enable_reg_info->access_bit_mask);
|
||||
PM1Bcontrol = PM1Acontrol;
|
||||
|
||||
/* Insert SLP_TYP bits */
|
||||
|
||||
PM1Acontrol |= (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position);
|
||||
PM1Bcontrol |= (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position);
|
||||
|
||||
/* Just ignore any errors */
|
||||
|
||||
(void) acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
|
||||
ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol);
|
||||
(void) acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
|
||||
ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol);
|
||||
}
|
||||
}
|
||||
|
||||
/* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
|
||||
|
||||
acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
|
||||
|
||||
/* Setup parameter object */
|
||||
|
||||
arg_list.count = 1;
|
||||
arg_list.pointer = &arg;
|
||||
arg.type = ACPI_TYPE_INTEGER;
|
||||
|
||||
/* Ignore any errors from these methods */
|
||||
|
||||
arg.integer.value = ACPI_SST_WAKING;
|
||||
status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL);
|
||||
if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
|
||||
ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status)));
|
||||
}
|
||||
|
||||
arg.integer.value = sleep_state;
|
||||
status = acpi_evaluate_object (NULL, METHOD_NAME__BFS, &arg_list, NULL);
|
||||
if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
|
||||
ACPI_REPORT_ERROR (("Method _BFS failed, %s\n", acpi_format_exception (status)));
|
||||
}
|
||||
|
||||
status = acpi_evaluate_object (NULL, METHOD_NAME__WAK, &arg_list, NULL);
|
||||
if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
|
||||
ACPI_REPORT_ERROR (("Method _WAK failed, %s\n", acpi_format_exception (status)));
|
||||
}
|
||||
/* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
|
||||
|
||||
/*
|
||||
* Restore the GPEs:
|
||||
* 1) Disable/Clear all GPEs
|
||||
* 2) Enable all runtime GPEs
|
||||
*/
|
||||
status = acpi_hw_disable_all_gpes (ACPI_NOT_ISR);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
acpi_gbl_system_awake_and_running = TRUE;
|
||||
|
||||
status = acpi_hw_enable_all_runtime_gpes (ACPI_NOT_ISR);
|
||||
if (ACPI_FAILURE (status)) {
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
|
||||
/* Enable power button */
|
||||
|
||||
(void) acpi_set_register(acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].enable_register_id,
|
||||
1, ACPI_MTX_DO_NOT_LOCK);
|
||||
(void) acpi_set_register(acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].status_register_id,
|
||||
1, ACPI_MTX_DO_NOT_LOCK);
|
||||
|
||||
arg.integer.value = ACPI_SST_WORKING;
|
||||
status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL);
|
||||
if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
|
||||
ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status)));
|
||||
}
|
||||
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
203
drivers/acpi/hardware/hwtimer.c
Normal file
203
drivers/acpi/hardware/hwtimer.c
Normal file
@@ -0,0 +1,203 @@
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* Name: hwtimer.c - ACPI Power Management Timer Interface
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Copyright (C) 2000 - 2005, R. Byron Moore
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions, and the following disclaimer,
|
||||
* without modification.
|
||||
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
||||
* substantially similar to the "NO WARRANTY" disclaimer below
|
||||
* ("Disclaimer") and any redistribution must be conditioned upon
|
||||
* including a substantially similar Disclaimer requirement for further
|
||||
* binary redistribution.
|
||||
* 3. Neither the names of the above-listed copyright holders nor the names
|
||||
* of any contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License ("GPL") version 2 as published by the Free
|
||||
* Software Foundation.
|
||||
*
|
||||
* NO WARRANTY
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
||||
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGES.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
|
||||
#include <acpi/acpi.h>
|
||||
|
||||
#define _COMPONENT ACPI_HARDWARE
|
||||
ACPI_MODULE_NAME ("hwtimer")
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_get_timer_resolution
|
||||
*
|
||||
* PARAMETERS: Resolution - Where the resolution is returned
|
||||
*
|
||||
* RETURN: Status and timer resolution
|
||||
*
|
||||
* DESCRIPTION: Obtains resolution of the ACPI PM Timer (24 or 32 bits).
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_get_timer_resolution (
|
||||
u32 *resolution)
|
||||
{
|
||||
ACPI_FUNCTION_TRACE ("acpi_get_timer_resolution");
|
||||
|
||||
|
||||
if (!resolution) {
|
||||
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
if (0 == acpi_gbl_FADT->tmr_val_ext) {
|
||||
*resolution = 24;
|
||||
}
|
||||
else {
|
||||
*resolution = 32;
|
||||
}
|
||||
|
||||
return_ACPI_STATUS (AE_OK);
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_get_timer
|
||||
*
|
||||
* PARAMETERS: Ticks - Where the timer value is returned
|
||||
*
|
||||
* RETURN: Status and current ticks
|
||||
*
|
||||
* DESCRIPTION: Obtains current value of ACPI PM Timer (in ticks).
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_get_timer (
|
||||
u32 *ticks)
|
||||
{
|
||||
acpi_status status;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("acpi_get_timer");
|
||||
|
||||
|
||||
if (!ticks) {
|
||||
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
status = acpi_hw_low_level_read (32, ticks, &acpi_gbl_FADT->xpm_tmr_blk);
|
||||
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
EXPORT_SYMBOL(acpi_get_timer);
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_get_timer_duration
|
||||
*
|
||||
* PARAMETERS: start_ticks - Starting timestamp
|
||||
* end_ticks - End timestamp
|
||||
* time_elapsed - Where the elapsed time is returned
|
||||
*
|
||||
* RETURN: Status and time_elapsed
|
||||
*
|
||||
* DESCRIPTION: Computes the time elapsed (in microseconds) between two
|
||||
* PM Timer time stamps, taking into account the possibility of
|
||||
* rollovers, the timer resolution, and timer frequency.
|
||||
*
|
||||
* The PM Timer's clock ticks at roughly 3.6 times per
|
||||
* _microsecond_, and its clock continues through Cx state
|
||||
* transitions (unlike many CPU timestamp counters) -- making it
|
||||
* a versatile and accurate timer.
|
||||
*
|
||||
* Note that this function accommodates only a single timer
|
||||
* rollover. Thus for 24-bit timers, this function should only
|
||||
* be used for calculating durations less than ~4.6 seconds
|
||||
* (~20 minutes for 32-bit timers) -- calculations below:
|
||||
*
|
||||
* 2**24 Ticks / 3,600,000 Ticks/Sec = 4.66 sec
|
||||
* 2**32 Ticks / 3,600,000 Ticks/Sec = 1193 sec or 19.88 minutes
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_get_timer_duration (
|
||||
u32 start_ticks,
|
||||
u32 end_ticks,
|
||||
u32 *time_elapsed)
|
||||
{
|
||||
acpi_status status;
|
||||
u32 delta_ticks;
|
||||
acpi_integer quotient;
|
||||
|
||||
|
||||
ACPI_FUNCTION_TRACE ("acpi_get_timer_duration");
|
||||
|
||||
|
||||
if (!time_elapsed) {
|
||||
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
/*
|
||||
* Compute Tick Delta:
|
||||
* Handle (max one) timer rollovers on 24-bit versus 32-bit timers.
|
||||
*/
|
||||
if (start_ticks < end_ticks) {
|
||||
delta_ticks = end_ticks - start_ticks;
|
||||
}
|
||||
else if (start_ticks > end_ticks) {
|
||||
if (0 == acpi_gbl_FADT->tmr_val_ext) {
|
||||
/* 24-bit Timer */
|
||||
|
||||
delta_ticks = (((0x00FFFFFF - start_ticks) + end_ticks) & 0x00FFFFFF);
|
||||
}
|
||||
else {
|
||||
/* 32-bit Timer */
|
||||
|
||||
delta_ticks = (0xFFFFFFFF - start_ticks) + end_ticks;
|
||||
}
|
||||
}
|
||||
else /* start_ticks == end_ticks */ {
|
||||
*time_elapsed = 0;
|
||||
return_ACPI_STATUS (AE_OK);
|
||||
}
|
||||
|
||||
/*
|
||||
* Compute Duration (Requires a 64-bit multiply and divide):
|
||||
*
|
||||
* time_elapsed = (delta_ticks * 1000000) / PM_TIMER_FREQUENCY;
|
||||
*/
|
||||
status = acpi_ut_short_divide (((u64) delta_ticks) * 1000000,
|
||||
PM_TIMER_FREQUENCY, "ient, NULL);
|
||||
|
||||
*time_elapsed = (u32) quotient;
|
||||
return_ACPI_STATUS (status);
|
||||
}
|
||||
EXPORT_SYMBOL(acpi_get_timer_duration);
|
||||
|
||||
Reference in New Issue
Block a user