You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
515 lines
14 KiB
515 lines
14 KiB
/******************************************************************************
|
|
*
|
|
* Module Name: utxface - External interfaces for "global" ACPI functions
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2006, 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/acevents.h>
|
|
#include <acpi/acnamesp.h>
|
|
#include <acpi/acdebug.h>
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME("utxface")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_initialize_subsystem
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Initializes all global variables. This is the first function
|
|
* called, so any early initialization belongs here.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_initialize_subsystem(void)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_initialize_subsystem");
|
|
|
|
ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace());
|
|
|
|
/* Initialize the OS-Dependent layer */
|
|
|
|
status = acpi_os_initialize();
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization"));
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Initialize all globals used by the subsystem */
|
|
|
|
acpi_ut_init_globals();
|
|
|
|
/* Create the default mutex objects */
|
|
|
|
status = acpi_ut_mutex_initialize();
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
"During Global Mutex creation"));
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*
|
|
* Initialize the namespace manager and
|
|
* the root of the namespace tree
|
|
*/
|
|
status = acpi_ns_root_initialize();
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
"During Namespace initialization"));
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* If configured, initialize the AML debugger */
|
|
|
|
ACPI_DEBUGGER_EXEC(status = acpi_db_initialize());
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_enable_subsystem
|
|
*
|
|
* PARAMETERS: Flags - Init/enable Options
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Completes the subsystem initialization including hardware.
|
|
* Puts system into ACPI mode if it isn't already.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_enable_subsystem(u32 flags)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_enable_subsystem");
|
|
|
|
/*
|
|
* We must initialize the hardware before we can enable ACPI.
|
|
* The values from the FADT are validated here.
|
|
*/
|
|
if (!(flags & ACPI_NO_HARDWARE_INIT)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"[Init] Initializing ACPI hardware\n"));
|
|
|
|
status = acpi_hw_initialize();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/* Enable ACPI mode */
|
|
|
|
if (!(flags & ACPI_NO_ACPI_ENABLE)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"[Init] Going into ACPI mode\n"));
|
|
|
|
acpi_gbl_original_mode = acpi_hw_get_mode();
|
|
|
|
status = acpi_enable();
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_WARNING((AE_INFO, "acpi_enable failed"));
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Install the default op_region handlers. These are installed unless
|
|
* other handlers have already been installed via the
|
|
* install_address_space_handler interface.
|
|
*/
|
|
if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"[Init] Installing default address space handlers\n"));
|
|
|
|
status = acpi_ev_install_region_handlers();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Initialize ACPI Event handling (Fixed and General Purpose)
|
|
*
|
|
* Note1: We must have the hardware and events initialized before we can
|
|
* execute any control methods safely. Any control method can require
|
|
* ACPI hardware support, so the hardware must be fully initialized before
|
|
* any method execution!
|
|
*
|
|
* Note2: Fixed events are initialized and enabled here. GPEs are
|
|
* initialized, but cannot be enabled until after the hardware is
|
|
* completely initialized (SCI and global_lock activated)
|
|
*/
|
|
if (!(flags & ACPI_NO_EVENT_INIT)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"[Init] Initializing ACPI events\n"));
|
|
|
|
status = acpi_ev_initialize_events();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Install the SCI handler and Global Lock handler. This completes the
|
|
* hardware initialization.
|
|
*/
|
|
if (!(flags & ACPI_NO_HANDLER_INIT)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"[Init] Installing SCI/GL handlers\n"));
|
|
|
|
status = acpi_ev_install_xrupt_handlers();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Complete the GPE initialization for the GPE blocks defined in the FADT
|
|
* (GPE block 0 and 1).
|
|
*
|
|
* Note1: This is where the _PRW methods are executed for the GPEs. These
|
|
* methods can only be executed after the SCI and Global Lock handlers are
|
|
* installed and initialized.
|
|
*
|
|
* Note2: Currently, there seems to be no need to run the _REG methods
|
|
* before execution of the _PRW methods and enabling of the GPEs.
|
|
*/
|
|
if (!(flags & ACPI_NO_EVENT_INIT)) {
|
|
status = acpi_ev_install_fadt_gpes();
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_initialize_objects
|
|
*
|
|
* PARAMETERS: Flags - Init/enable Options
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Completes namespace initialization by initializing device
|
|
* objects and executing AML code for Regions, buffers, etc.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_initialize_objects(u32 flags)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_initialize_objects");
|
|
|
|
/*
|
|
* Run all _REG methods
|
|
*
|
|
* Note: Any objects accessed by the _REG methods will be automatically
|
|
* initialized, even if they contain executable AML (see the call to
|
|
* acpi_ns_initialize_objects below).
|
|
*/
|
|
if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"[Init] Executing _REG op_region methods\n"));
|
|
|
|
status = acpi_ev_initialize_op_regions();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Initialize the objects that remain uninitialized. This runs the
|
|
* executable AML that may be part of the declaration of these objects:
|
|
* operation_regions, buffer_fields, Buffers, and Packages.
|
|
*/
|
|
if (!(flags & ACPI_NO_OBJECT_INIT)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"[Init] Completing Initialization of ACPI Objects\n"));
|
|
|
|
status = acpi_ns_initialize_objects();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Initialize all device objects in the namespace. This runs the device
|
|
* _STA and _INI methods.
|
|
*/
|
|
if (!(flags & ACPI_NO_DEVICE_INIT)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"[Init] Initializing ACPI Devices\n"));
|
|
|
|
status = acpi_ns_initialize_devices();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Empty the caches (delete the cached objects) on the assumption that
|
|
* the table load filled them up more than they will be at runtime --
|
|
* thus wasting non-paged memory.
|
|
*/
|
|
status = acpi_purge_cached_objects();
|
|
|
|
acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK;
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_terminate
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Shutdown the ACPI subsystem. Release all resources.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_terminate(void)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_terminate");
|
|
|
|
/* Terminate the AML Debugger if present */
|
|
|
|
ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE);
|
|
|
|
/* Shutdown and free all resources */
|
|
|
|
acpi_ut_subsystem_shutdown();
|
|
|
|
/* Free the mutex objects */
|
|
|
|
acpi_ut_mutex_terminate();
|
|
|
|
#ifdef ACPI_DEBUGGER
|
|
|
|
/* Shut down the debugger */
|
|
|
|
acpi_db_terminate();
|
|
#endif
|
|
|
|
/* Now we can shutdown the OS-dependent layer */
|
|
|
|
status = acpi_os_terminate();
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
#ifdef ACPI_FUTURE_USAGE
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_subsystem_status
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status of the ACPI subsystem
|
|
*
|
|
* DESCRIPTION: Other drivers that use the ACPI subsystem should call this
|
|
* before making any other calls, to ensure the subsystem
|
|
* initialized successfully.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_subsystem_status(void)
|
|
{
|
|
|
|
if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) {
|
|
return (AE_OK);
|
|
} else {
|
|
return (AE_ERROR);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_get_system_info
|
|
*
|
|
* PARAMETERS: out_buffer - A buffer to receive the resources for the
|
|
* device
|
|
*
|
|
* RETURN: Status - the status of the call
|
|
*
|
|
* DESCRIPTION: This function is called to get information about the current
|
|
* state of the ACPI subsystem. It will return system information
|
|
* in the out_buffer.
|
|
*
|
|
* If the function fails an appropriate status will be returned
|
|
* and the value of out_buffer is undefined.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_get_system_info(struct acpi_buffer * out_buffer)
|
|
{
|
|
struct acpi_system_info *info_ptr;
|
|
acpi_status status;
|
|
u32 i;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_get_system_info");
|
|
|
|
/* Parameter validation */
|
|
|
|
status = acpi_ut_validate_buffer(out_buffer);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Validate/Allocate/Clear caller buffer */
|
|
|
|
status =
|
|
acpi_ut_initialize_buffer(out_buffer,
|
|
sizeof(struct acpi_system_info));
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*
|
|
* Populate the return buffer
|
|
*/
|
|
info_ptr = (struct acpi_system_info *)out_buffer->pointer;
|
|
|
|
info_ptr->acpi_ca_version = ACPI_CA_VERSION;
|
|
|
|
/* System flags (ACPI capabilities) */
|
|
|
|
info_ptr->flags = ACPI_SYS_MODE_ACPI;
|
|
|
|
/* Timer resolution - 24 or 32 bits */
|
|
|
|
if (!acpi_gbl_FADT) {
|
|
info_ptr->timer_resolution = 0;
|
|
} else if (acpi_gbl_FADT->tmr_val_ext == 0) {
|
|
info_ptr->timer_resolution = 24;
|
|
} else {
|
|
info_ptr->timer_resolution = 32;
|
|
}
|
|
|
|
/* Clear the reserved fields */
|
|
|
|
info_ptr->reserved1 = 0;
|
|
info_ptr->reserved2 = 0;
|
|
|
|
/* Current debug levels */
|
|
|
|
info_ptr->debug_layer = acpi_dbg_layer;
|
|
info_ptr->debug_level = acpi_dbg_level;
|
|
|
|
/* Current status of the ACPI tables, per table type */
|
|
|
|
info_ptr->num_table_types = NUM_ACPI_TABLE_TYPES;
|
|
for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++) {
|
|
info_ptr->table_info[i].count = acpi_gbl_table_lists[i].count;
|
|
}
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
EXPORT_SYMBOL(acpi_get_system_info);
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: acpi_install_initialization_handler
|
|
*
|
|
* PARAMETERS: Handler - Callback procedure
|
|
* Function - Not (currently) used, see below
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install an initialization handler
|
|
*
|
|
* TBD: When a second function is added, must save the Function also.
|
|
*
|
|
****************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
|
|
{
|
|
|
|
if (!handler) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (acpi_gbl_init_handler) {
|
|
return (AE_ALREADY_EXISTS);
|
|
}
|
|
|
|
acpi_gbl_init_handler = handler;
|
|
return AE_OK;
|
|
}
|
|
|
|
#endif /* ACPI_FUTURE_USAGE */
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: acpi_purge_cached_objects
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Empty all caches (delete the cached objects)
|
|
*
|
|
****************************************************************************/
|
|
|
|
acpi_status acpi_purge_cached_objects(void)
|
|
{
|
|
ACPI_FUNCTION_TRACE("acpi_purge_cached_objects");
|
|
|
|
(void)acpi_os_purge_cache(acpi_gbl_state_cache);
|
|
(void)acpi_os_purge_cache(acpi_gbl_operand_cache);
|
|
(void)acpi_os_purge_cache(acpi_gbl_ps_node_cache);
|
|
(void)acpi_os_purge_cache(acpi_gbl_ps_node_ext_cache);
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|