559 lines
16 KiB
C
559 lines
16 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: utxface - External interfaces, miscellaneous utility functions
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2016, Intel Corp.
|
|
* 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.
|
|
*/
|
|
|
|
#define EXPORT_ACPI_INTERFACES
|
|
|
|
#include <acpi/acpi.h>
|
|
#include "accommon.h"
|
|
#include "acdebug.h"
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME("utxface")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_terminate
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Shutdown the ACPICA subsystem and release all resources.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status __init acpi_terminate(void)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_terminate);
|
|
|
|
/* Shutdown and free all resources */
|
|
|
|
acpi_ut_subsystem_shutdown();
|
|
|
|
/* Free the mutex objects */
|
|
|
|
acpi_ut_mutex_terminate();
|
|
|
|
/* Now we can shutdown the OS-dependent layer */
|
|
|
|
status = acpi_os_terminate();
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL_INIT(acpi_terminate)
|
|
|
|
#ifndef ACPI_ASL_COMPILER
|
|
#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);
|
|
}
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_subsystem_status)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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;
|
|
|
|
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.flags & ACPI_FADT_32BIT_TIMER) {
|
|
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;
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_system_info)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_get_statistics
|
|
*
|
|
* PARAMETERS: stats - Where the statistics are returned
|
|
*
|
|
* RETURN: status - the status of the call
|
|
*
|
|
* DESCRIPTION: Get the contents of the various system counters
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_get_statistics(struct acpi_statistics *stats)
|
|
{
|
|
ACPI_FUNCTION_TRACE(acpi_get_statistics);
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!stats) {
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Various interrupt-based event counters */
|
|
|
|
stats->sci_count = acpi_sci_count;
|
|
stats->gpe_count = acpi_gpe_count;
|
|
|
|
memcpy(stats->fixed_event_count, acpi_fixed_event_count,
|
|
sizeof(acpi_fixed_event_count));
|
|
|
|
/* Other counters */
|
|
|
|
stats->method_count = acpi_method_count;
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_statistics)
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* 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);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler)
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* 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);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_purge_cached_objects)
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: acpi_install_interface
|
|
*
|
|
* PARAMETERS: interface_name - The interface to install
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install an _OSI interface to the global list
|
|
*
|
|
****************************************************************************/
|
|
acpi_status acpi_install_interface(acpi_string interface_name)
|
|
{
|
|
acpi_status status;
|
|
struct acpi_interface_info *interface_info;
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!interface_name || (strlen(interface_name) == 0)) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
/* Check if the interface name is already in the global list */
|
|
|
|
interface_info = acpi_ut_get_interface(interface_name);
|
|
if (interface_info) {
|
|
/*
|
|
* The interface already exists in the list. This is OK if the
|
|
* interface has been marked invalid -- just clear the bit.
|
|
*/
|
|
if (interface_info->flags & ACPI_OSI_INVALID) {
|
|
interface_info->flags &= ~ACPI_OSI_INVALID;
|
|
status = AE_OK;
|
|
} else {
|
|
status = AE_ALREADY_EXISTS;
|
|
}
|
|
} else {
|
|
/* New interface name, install into the global list */
|
|
|
|
status = acpi_ut_install_interface(interface_name);
|
|
}
|
|
|
|
acpi_os_release_mutex(acpi_gbl_osi_mutex);
|
|
return (status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_install_interface)
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: acpi_remove_interface
|
|
*
|
|
* PARAMETERS: interface_name - The interface to remove
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove an _OSI interface from the global list
|
|
*
|
|
****************************************************************************/
|
|
acpi_status acpi_remove_interface(acpi_string interface_name)
|
|
{
|
|
acpi_status status;
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!interface_name || (strlen(interface_name) == 0)) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
status = acpi_ut_remove_interface(interface_name);
|
|
|
|
acpi_os_release_mutex(acpi_gbl_osi_mutex);
|
|
return (status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_remove_interface)
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: acpi_install_interface_handler
|
|
*
|
|
* PARAMETERS: handler - The _OSI interface handler to install
|
|
* NULL means "remove existing handler"
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install a handler for the predefined _OSI ACPI method.
|
|
* invoked during execution of the internal implementation of
|
|
* _OSI. A NULL handler simply removes any existing handler.
|
|
*
|
|
****************************************************************************/
|
|
acpi_status acpi_install_interface_handler(acpi_interface_handler handler)
|
|
{
|
|
acpi_status status;
|
|
|
|
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
if (handler && acpi_gbl_interface_handler) {
|
|
status = AE_ALREADY_EXISTS;
|
|
} else {
|
|
acpi_gbl_interface_handler = handler;
|
|
}
|
|
|
|
acpi_os_release_mutex(acpi_gbl_osi_mutex);
|
|
return (status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_install_interface_handler)
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: acpi_update_interfaces
|
|
*
|
|
* PARAMETERS: action - Actions to be performed during the
|
|
* update
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor
|
|
* string or/and feature group strings.
|
|
*
|
|
****************************************************************************/
|
|
acpi_status acpi_update_interfaces(u8 action)
|
|
{
|
|
acpi_status status;
|
|
|
|
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
status = acpi_ut_update_interfaces(action);
|
|
|
|
acpi_os_release_mutex(acpi_gbl_osi_mutex);
|
|
return (status);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: acpi_check_address_range
|
|
*
|
|
* PARAMETERS: space_id - Address space ID
|
|
* address - Start address
|
|
* length - Length
|
|
* warn - TRUE if warning on overlap desired
|
|
*
|
|
* RETURN: Count of the number of conflicts detected.
|
|
*
|
|
* DESCRIPTION: Check if the input address range overlaps any of the
|
|
* ASL operation region address ranges.
|
|
*
|
|
****************************************************************************/
|
|
|
|
u32
|
|
acpi_check_address_range(acpi_adr_space_type space_id,
|
|
acpi_physical_address address,
|
|
acpi_size length, u8 warn)
|
|
{
|
|
u32 overlaps;
|
|
acpi_status status;
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (0);
|
|
}
|
|
|
|
overlaps = acpi_ut_check_address_range(space_id, address,
|
|
(u32)length, warn);
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
|
|
return (overlaps);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_check_address_range)
|
|
#endif /* !ACPI_ASL_COMPILER */
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_decode_pld_buffer
|
|
*
|
|
* PARAMETERS: in_buffer - Buffer returned by _PLD method
|
|
* length - Length of the in_buffer
|
|
* return_buffer - Where the decode buffer is returned
|
|
*
|
|
* RETURN: Status and the decoded _PLD buffer. User must deallocate
|
|
* the buffer via ACPI_FREE.
|
|
*
|
|
* DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into
|
|
* a local struct that is much more useful to an ACPI driver.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status
|
|
acpi_decode_pld_buffer(u8 *in_buffer,
|
|
acpi_size length, struct acpi_pld_info **return_buffer)
|
|
{
|
|
struct acpi_pld_info *pld_info;
|
|
u32 *buffer = ACPI_CAST_PTR(u32, in_buffer);
|
|
u32 dword;
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!in_buffer || !return_buffer
|
|
|| (length < ACPI_PLD_REV1_BUFFER_SIZE)) {
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
pld_info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pld_info));
|
|
if (!pld_info) {
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* First 32-bit DWord */
|
|
|
|
ACPI_MOVE_32_TO_32(&dword, &buffer[0]);
|
|
pld_info->revision = ACPI_PLD_GET_REVISION(&dword);
|
|
pld_info->ignore_color = ACPI_PLD_GET_IGNORE_COLOR(&dword);
|
|
pld_info->red = ACPI_PLD_GET_RED(&dword);
|
|
pld_info->green = ACPI_PLD_GET_GREEN(&dword);
|
|
pld_info->blue = ACPI_PLD_GET_BLUE(&dword);
|
|
|
|
/* Second 32-bit DWord */
|
|
|
|
ACPI_MOVE_32_TO_32(&dword, &buffer[1]);
|
|
pld_info->width = ACPI_PLD_GET_WIDTH(&dword);
|
|
pld_info->height = ACPI_PLD_GET_HEIGHT(&dword);
|
|
|
|
/* Third 32-bit DWord */
|
|
|
|
ACPI_MOVE_32_TO_32(&dword, &buffer[2]);
|
|
pld_info->user_visible = ACPI_PLD_GET_USER_VISIBLE(&dword);
|
|
pld_info->dock = ACPI_PLD_GET_DOCK(&dword);
|
|
pld_info->lid = ACPI_PLD_GET_LID(&dword);
|
|
pld_info->panel = ACPI_PLD_GET_PANEL(&dword);
|
|
pld_info->vertical_position = ACPI_PLD_GET_VERTICAL(&dword);
|
|
pld_info->horizontal_position = ACPI_PLD_GET_HORIZONTAL(&dword);
|
|
pld_info->shape = ACPI_PLD_GET_SHAPE(&dword);
|
|
pld_info->group_orientation = ACPI_PLD_GET_ORIENTATION(&dword);
|
|
pld_info->group_token = ACPI_PLD_GET_TOKEN(&dword);
|
|
pld_info->group_position = ACPI_PLD_GET_POSITION(&dword);
|
|
pld_info->bay = ACPI_PLD_GET_BAY(&dword);
|
|
|
|
/* Fourth 32-bit DWord */
|
|
|
|
ACPI_MOVE_32_TO_32(&dword, &buffer[3]);
|
|
pld_info->ejectable = ACPI_PLD_GET_EJECTABLE(&dword);
|
|
pld_info->ospm_eject_required = ACPI_PLD_GET_OSPM_EJECT(&dword);
|
|
pld_info->cabinet_number = ACPI_PLD_GET_CABINET(&dword);
|
|
pld_info->card_cage_number = ACPI_PLD_GET_CARD_CAGE(&dword);
|
|
pld_info->reference = ACPI_PLD_GET_REFERENCE(&dword);
|
|
pld_info->rotation = ACPI_PLD_GET_ROTATION(&dword);
|
|
pld_info->order = ACPI_PLD_GET_ORDER(&dword);
|
|
|
|
if (length >= ACPI_PLD_REV2_BUFFER_SIZE) {
|
|
|
|
/* Fifth 32-bit DWord (Revision 2 of _PLD) */
|
|
|
|
ACPI_MOVE_32_TO_32(&dword, &buffer[4]);
|
|
pld_info->vertical_offset = ACPI_PLD_GET_VERT_OFFSET(&dword);
|
|
pld_info->horizontal_offset = ACPI_PLD_GET_HORIZ_OFFSET(&dword);
|
|
}
|
|
|
|
*return_buffer = pld_info;
|
|
return (AE_OK);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_decode_pld_buffer)
|