--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: utxface - External interfaces, miscellaneous utility functions
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, 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);
+
+ /* Just exit if subsystem is already shutdown */
+
+ if (acpi_gbl_shutdown) {
+ ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /* Subsystem appears active, go ahead and shut it down */
+
+ acpi_gbl_shutdown = TRUE;
+ acpi_gbl_startup_flags = 0;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
+
+ /* 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);
+}
+
+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;
+
+ ACPI_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 /* 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);
+}
+
+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 || (ACPI_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 || (ACPI_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 < 16)) {
+ 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_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)
Code Review / kvmfornfv.git / blobdiff