195b482a8SLen Brown /****************************************************************************** 295b482a8SLen Brown * 3d978348bSBob Moore * Module Name: utxface - External interfaces, miscellaneous utility functions 495b482a8SLen Brown * 595b482a8SLen Brown *****************************************************************************/ 695b482a8SLen Brown 795b482a8SLen Brown /* 8c8100dc4SBob Moore * Copyright (C) 2000 - 2016, Intel Corp. 995b482a8SLen Brown * All rights reserved. 1095b482a8SLen Brown * 1195b482a8SLen Brown * Redistribution and use in source and binary forms, with or without 1295b482a8SLen Brown * modification, are permitted provided that the following conditions 1395b482a8SLen Brown * are met: 1495b482a8SLen Brown * 1. Redistributions of source code must retain the above copyright 1595b482a8SLen Brown * notice, this list of conditions, and the following disclaimer, 1695b482a8SLen Brown * without modification. 1795b482a8SLen Brown * 2. Redistributions in binary form must reproduce at minimum a disclaimer 1895b482a8SLen Brown * substantially similar to the "NO WARRANTY" disclaimer below 1995b482a8SLen Brown * ("Disclaimer") and any redistribution must be conditioned upon 2095b482a8SLen Brown * including a substantially similar Disclaimer requirement for further 2195b482a8SLen Brown * binary redistribution. 2295b482a8SLen Brown * 3. Neither the names of the above-listed copyright holders nor the names 2395b482a8SLen Brown * of any contributors may be used to endorse or promote products derived 2495b482a8SLen Brown * from this software without specific prior written permission. 2595b482a8SLen Brown * 2695b482a8SLen Brown * Alternatively, this software may be distributed under the terms of the 2795b482a8SLen Brown * GNU General Public License ("GPL") version 2 as published by the Free 2895b482a8SLen Brown * Software Foundation. 2995b482a8SLen Brown * 3095b482a8SLen Brown * NO WARRANTY 3195b482a8SLen Brown * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 3295b482a8SLen Brown * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 3395b482a8SLen Brown * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 3495b482a8SLen Brown * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 3595b482a8SLen Brown * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3695b482a8SLen Brown * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3795b482a8SLen Brown * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3895b482a8SLen Brown * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 3995b482a8SLen Brown * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 4095b482a8SLen Brown * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 4195b482a8SLen Brown * POSSIBILITY OF SUCH DAMAGES. 4295b482a8SLen Brown */ 4395b482a8SLen Brown 44839e928fSLv Zheng #define EXPORT_ACPI_INTERFACES 45839e928fSLv Zheng 4695b482a8SLen Brown #include <acpi/acpi.h> 47e2f7a777SLen Brown #include "accommon.h" 48e2f7a777SLen Brown #include "acdebug.h" 4995b482a8SLen Brown 5095b482a8SLen Brown #define _COMPONENT ACPI_UTILITIES 5195b482a8SLen Brown ACPI_MODULE_NAME("utxface") 5295b482a8SLen Brown 5395b482a8SLen Brown /******************************************************************************* 5495b482a8SLen Brown * 5595b482a8SLen Brown * FUNCTION: acpi_terminate 5695b482a8SLen Brown * 5795b482a8SLen Brown * PARAMETERS: None 5895b482a8SLen Brown * 5995b482a8SLen Brown * RETURN: Status 6095b482a8SLen Brown * 612f977b36SBob Moore * DESCRIPTION: Shutdown the ACPICA subsystem and release all resources. 6295b482a8SLen Brown * 6395b482a8SLen Brown ******************************************************************************/ 642368b1a1SLv Zheng acpi_status ACPI_INIT_FUNCTION acpi_terminate(void) 6595b482a8SLen Brown { 6695b482a8SLen Brown acpi_status status; 6795b482a8SLen Brown 6895b482a8SLen Brown ACPI_FUNCTION_TRACE(acpi_terminate); 6995b482a8SLen Brown 7095b482a8SLen Brown /* Shutdown and free all resources */ 7195b482a8SLen Brown 7295b482a8SLen Brown acpi_ut_subsystem_shutdown(); 7395b482a8SLen Brown 7495b482a8SLen Brown /* Free the mutex objects */ 7595b482a8SLen Brown 7695b482a8SLen Brown acpi_ut_mutex_terminate(); 7795b482a8SLen Brown 7895b482a8SLen Brown /* Now we can shutdown the OS-dependent layer */ 7995b482a8SLen Brown 8095b482a8SLen Brown status = acpi_os_terminate(); 8195b482a8SLen Brown return_ACPI_STATUS(status); 8295b482a8SLen Brown } 8395b482a8SLen Brown 84d21f600bSLv Zheng ACPI_EXPORT_SYMBOL_INIT(acpi_terminate) 852f977b36SBob Moore 8695b482a8SLen Brown #ifndef ACPI_ASL_COMPILER 8795b482a8SLen Brown #ifdef ACPI_FUTURE_USAGE 8895b482a8SLen Brown /******************************************************************************* 8995b482a8SLen Brown * 9095b482a8SLen Brown * FUNCTION: acpi_subsystem_status 9195b482a8SLen Brown * 9295b482a8SLen Brown * PARAMETERS: None 9395b482a8SLen Brown * 9495b482a8SLen Brown * RETURN: Status of the ACPI subsystem 9595b482a8SLen Brown * 9695b482a8SLen Brown * DESCRIPTION: Other drivers that use the ACPI subsystem should call this 9795b482a8SLen Brown * before making any other calls, to ensure the subsystem 9895b482a8SLen Brown * initialized successfully. 9995b482a8SLen Brown * 10095b482a8SLen Brown ******************************************************************************/ 10195b482a8SLen Brown acpi_status acpi_subsystem_status(void) 10295b482a8SLen Brown { 10395b482a8SLen Brown 10495b482a8SLen Brown if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) { 10595b482a8SLen Brown return (AE_OK); 10695b482a8SLen Brown } else { 10795b482a8SLen Brown return (AE_ERROR); 10895b482a8SLen Brown } 10995b482a8SLen Brown } 11095b482a8SLen Brown 11195b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_subsystem_status) 11295b482a8SLen Brown 11395b482a8SLen Brown /******************************************************************************* 11495b482a8SLen Brown * 11595b482a8SLen Brown * FUNCTION: acpi_get_system_info 11695b482a8SLen Brown * 11795b482a8SLen Brown * PARAMETERS: out_buffer - A buffer to receive the resources for the 11895b482a8SLen Brown * device 11995b482a8SLen Brown * 120ba494beeSBob Moore * RETURN: status - the status of the call 12195b482a8SLen Brown * 12295b482a8SLen Brown * DESCRIPTION: This function is called to get information about the current 12395b482a8SLen Brown * state of the ACPI subsystem. It will return system information 12495b482a8SLen Brown * in the out_buffer. 12595b482a8SLen Brown * 12695b482a8SLen Brown * If the function fails an appropriate status will be returned 12795b482a8SLen Brown * and the value of out_buffer is undefined. 12895b482a8SLen Brown * 12995b482a8SLen Brown ******************************************************************************/ 13095b482a8SLen Brown acpi_status acpi_get_system_info(struct acpi_buffer *out_buffer) 13195b482a8SLen Brown { 13295b482a8SLen Brown struct acpi_system_info *info_ptr; 13395b482a8SLen Brown acpi_status status; 13495b482a8SLen Brown 13595b482a8SLen Brown ACPI_FUNCTION_TRACE(acpi_get_system_info); 13695b482a8SLen Brown 13795b482a8SLen Brown /* Parameter validation */ 13895b482a8SLen Brown 13995b482a8SLen Brown status = acpi_ut_validate_buffer(out_buffer); 14095b482a8SLen Brown if (ACPI_FAILURE(status)) { 14195b482a8SLen Brown return_ACPI_STATUS(status); 14295b482a8SLen Brown } 14395b482a8SLen Brown 14495b482a8SLen Brown /* Validate/Allocate/Clear caller buffer */ 14595b482a8SLen Brown 14695b482a8SLen Brown status = 14795b482a8SLen Brown acpi_ut_initialize_buffer(out_buffer, 14895b482a8SLen Brown sizeof(struct acpi_system_info)); 14995b482a8SLen Brown if (ACPI_FAILURE(status)) { 15095b482a8SLen Brown return_ACPI_STATUS(status); 15195b482a8SLen Brown } 15295b482a8SLen Brown 15395b482a8SLen Brown /* 15495b482a8SLen Brown * Populate the return buffer 15595b482a8SLen Brown */ 15695b482a8SLen Brown info_ptr = (struct acpi_system_info *)out_buffer->pointer; 15795b482a8SLen Brown info_ptr->acpi_ca_version = ACPI_CA_VERSION; 15895b482a8SLen Brown 15995b482a8SLen Brown /* System flags (ACPI capabilities) */ 16095b482a8SLen Brown 16195b482a8SLen Brown info_ptr->flags = ACPI_SYS_MODE_ACPI; 16295b482a8SLen Brown 16395b482a8SLen Brown /* Timer resolution - 24 or 32 bits */ 16495b482a8SLen Brown 16595b482a8SLen Brown if (acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER) { 16695b482a8SLen Brown info_ptr->timer_resolution = 24; 16795b482a8SLen Brown } else { 16895b482a8SLen Brown info_ptr->timer_resolution = 32; 16995b482a8SLen Brown } 17095b482a8SLen Brown 17195b482a8SLen Brown /* Clear the reserved fields */ 17295b482a8SLen Brown 17395b482a8SLen Brown info_ptr->reserved1 = 0; 17495b482a8SLen Brown info_ptr->reserved2 = 0; 17595b482a8SLen Brown 17695b482a8SLen Brown /* Current debug levels */ 17795b482a8SLen Brown 17895b482a8SLen Brown info_ptr->debug_layer = acpi_dbg_layer; 17995b482a8SLen Brown info_ptr->debug_level = acpi_dbg_level; 18095b482a8SLen Brown 18195b482a8SLen Brown return_ACPI_STATUS(AE_OK); 18295b482a8SLen Brown } 18395b482a8SLen Brown 18495b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_get_system_info) 18595b482a8SLen Brown 1869187a415SLv Zheng /******************************************************************************* 1879187a415SLv Zheng * 1889187a415SLv Zheng * FUNCTION: acpi_get_statistics 1899187a415SLv Zheng * 1909187a415SLv Zheng * PARAMETERS: stats - Where the statistics are returned 1919187a415SLv Zheng * 1929187a415SLv Zheng * RETURN: status - the status of the call 1939187a415SLv Zheng * 1949187a415SLv Zheng * DESCRIPTION: Get the contents of the various system counters 1959187a415SLv Zheng * 1969187a415SLv Zheng ******************************************************************************/ 1979187a415SLv Zheng acpi_status acpi_get_statistics(struct acpi_statistics *stats) 1989187a415SLv Zheng { 1999187a415SLv Zheng ACPI_FUNCTION_TRACE(acpi_get_statistics); 2009187a415SLv Zheng 2019187a415SLv Zheng /* Parameter validation */ 2029187a415SLv Zheng 2039187a415SLv Zheng if (!stats) { 2049187a415SLv Zheng return_ACPI_STATUS(AE_BAD_PARAMETER); 2059187a415SLv Zheng } 2069187a415SLv Zheng 2079187a415SLv Zheng /* Various interrupt-based event counters */ 2089187a415SLv Zheng 2099187a415SLv Zheng stats->sci_count = acpi_sci_count; 2109187a415SLv Zheng stats->gpe_count = acpi_gpe_count; 2119187a415SLv Zheng 2124fa4616eSBob Moore memcpy(stats->fixed_event_count, acpi_fixed_event_count, 2139187a415SLv Zheng sizeof(acpi_fixed_event_count)); 2149187a415SLv Zheng 2159187a415SLv Zheng /* Other counters */ 2169187a415SLv Zheng 2179187a415SLv Zheng stats->method_count = acpi_method_count; 2189187a415SLv Zheng return_ACPI_STATUS(AE_OK); 2199187a415SLv Zheng } 2209187a415SLv Zheng 2219187a415SLv Zheng ACPI_EXPORT_SYMBOL(acpi_get_statistics) 2229187a415SLv Zheng 22395b482a8SLen Brown /***************************************************************************** 22495b482a8SLen Brown * 22595b482a8SLen Brown * FUNCTION: acpi_install_initialization_handler 22695b482a8SLen Brown * 227ba494beeSBob Moore * PARAMETERS: handler - Callback procedure 228ba494beeSBob Moore * function - Not (currently) used, see below 22995b482a8SLen Brown * 23095b482a8SLen Brown * RETURN: Status 23195b482a8SLen Brown * 23295b482a8SLen Brown * DESCRIPTION: Install an initialization handler 23395b482a8SLen Brown * 23495b482a8SLen Brown * TBD: When a second function is added, must save the Function also. 23595b482a8SLen Brown * 23695b482a8SLen Brown ****************************************************************************/ 23795b482a8SLen Brown acpi_status 23895b482a8SLen Brown acpi_install_initialization_handler(acpi_init_handler handler, u32 function) 23995b482a8SLen Brown { 24095b482a8SLen Brown 24195b482a8SLen Brown if (!handler) { 24295b482a8SLen Brown return (AE_BAD_PARAMETER); 24395b482a8SLen Brown } 24495b482a8SLen Brown 24595b482a8SLen Brown if (acpi_gbl_init_handler) { 24695b482a8SLen Brown return (AE_ALREADY_EXISTS); 24795b482a8SLen Brown } 24895b482a8SLen Brown 24995b482a8SLen Brown acpi_gbl_init_handler = handler; 25068aafc35SBob Moore return (AE_OK); 25195b482a8SLen Brown } 25295b482a8SLen Brown 25395b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler) 2544d946f79SLv Zheng #endif 255b0ed7a91SLin Ming 25695b482a8SLen Brown /***************************************************************************** 25795b482a8SLen Brown * 25895b482a8SLen Brown * FUNCTION: acpi_purge_cached_objects 25995b482a8SLen Brown * 26095b482a8SLen Brown * PARAMETERS: None 26195b482a8SLen Brown * 26295b482a8SLen Brown * RETURN: Status 26395b482a8SLen Brown * 26495b482a8SLen Brown * DESCRIPTION: Empty all caches (delete the cached objects) 26595b482a8SLen Brown * 26695b482a8SLen Brown ****************************************************************************/ 26795b482a8SLen Brown acpi_status acpi_purge_cached_objects(void) 26895b482a8SLen Brown { 26995b482a8SLen Brown ACPI_FUNCTION_TRACE(acpi_purge_cached_objects); 27095b482a8SLen Brown 27195b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_state_cache); 27295b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_operand_cache); 27395b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_ps_node_cache); 27495b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_ps_node_ext_cache); 27568aafc35SBob Moore 27695b482a8SLen Brown return_ACPI_STATUS(AE_OK); 27795b482a8SLen Brown } 27895b482a8SLen Brown 27995b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_purge_cached_objects) 280b0ed7a91SLin Ming 281b0ed7a91SLin Ming /***************************************************************************** 282b0ed7a91SLin Ming * 283b0ed7a91SLin Ming * FUNCTION: acpi_install_interface 284b0ed7a91SLin Ming * 285b0ed7a91SLin Ming * PARAMETERS: interface_name - The interface to install 286b0ed7a91SLin Ming * 287b0ed7a91SLin Ming * RETURN: Status 288b0ed7a91SLin Ming * 289b0ed7a91SLin Ming * DESCRIPTION: Install an _OSI interface to the global list 290b0ed7a91SLin Ming * 291b0ed7a91SLin Ming ****************************************************************************/ 292b0ed7a91SLin Ming acpi_status acpi_install_interface(acpi_string interface_name) 293b0ed7a91SLin Ming { 294b0ed7a91SLin Ming acpi_status status; 295b0ed7a91SLin Ming struct acpi_interface_info *interface_info; 296b0ed7a91SLin Ming 297b0ed7a91SLin Ming /* Parameter validation */ 298b0ed7a91SLin Ming 2994fa4616eSBob Moore if (!interface_name || (strlen(interface_name) == 0)) { 300b0ed7a91SLin Ming return (AE_BAD_PARAMETER); 301b0ed7a91SLin Ming } 302b0ed7a91SLin Ming 303388a9902SJung-uk Kim status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 304388a9902SJung-uk Kim if (ACPI_FAILURE(status)) { 305388a9902SJung-uk Kim return (status); 306388a9902SJung-uk Kim } 307b0ed7a91SLin Ming 308b0ed7a91SLin Ming /* Check if the interface name is already in the global list */ 309b0ed7a91SLin Ming 310b0ed7a91SLin Ming interface_info = acpi_ut_get_interface(interface_name); 311b0ed7a91SLin Ming if (interface_info) { 312b0ed7a91SLin Ming /* 313b0ed7a91SLin Ming * The interface already exists in the list. This is OK if the 314b0ed7a91SLin Ming * interface has been marked invalid -- just clear the bit. 315b0ed7a91SLin Ming */ 316b0ed7a91SLin Ming if (interface_info->flags & ACPI_OSI_INVALID) { 317b0ed7a91SLin Ming interface_info->flags &= ~ACPI_OSI_INVALID; 318b0ed7a91SLin Ming status = AE_OK; 319b0ed7a91SLin Ming } else { 320b0ed7a91SLin Ming status = AE_ALREADY_EXISTS; 321b0ed7a91SLin Ming } 322b0ed7a91SLin Ming } else { 323b0ed7a91SLin Ming /* New interface name, install into the global list */ 324b0ed7a91SLin Ming 325b0ed7a91SLin Ming status = acpi_ut_install_interface(interface_name); 326b0ed7a91SLin Ming } 327b0ed7a91SLin Ming 328b0ed7a91SLin Ming acpi_os_release_mutex(acpi_gbl_osi_mutex); 329b0ed7a91SLin Ming return (status); 330b0ed7a91SLin Ming } 331b0ed7a91SLin Ming 332b0ed7a91SLin Ming ACPI_EXPORT_SYMBOL(acpi_install_interface) 333b0ed7a91SLin Ming 334b0ed7a91SLin Ming /***************************************************************************** 335b0ed7a91SLin Ming * 336b0ed7a91SLin Ming * FUNCTION: acpi_remove_interface 337b0ed7a91SLin Ming * 338b0ed7a91SLin Ming * PARAMETERS: interface_name - The interface to remove 339b0ed7a91SLin Ming * 340b0ed7a91SLin Ming * RETURN: Status 341b0ed7a91SLin Ming * 342b0ed7a91SLin Ming * DESCRIPTION: Remove an _OSI interface from the global list 343b0ed7a91SLin Ming * 344b0ed7a91SLin Ming ****************************************************************************/ 345b0ed7a91SLin Ming acpi_status acpi_remove_interface(acpi_string interface_name) 346b0ed7a91SLin Ming { 347b0ed7a91SLin Ming acpi_status status; 348b0ed7a91SLin Ming 349b0ed7a91SLin Ming /* Parameter validation */ 350b0ed7a91SLin Ming 3514fa4616eSBob Moore if (!interface_name || (strlen(interface_name) == 0)) { 352b0ed7a91SLin Ming return (AE_BAD_PARAMETER); 353b0ed7a91SLin Ming } 354b0ed7a91SLin Ming 355388a9902SJung-uk Kim status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 356388a9902SJung-uk Kim if (ACPI_FAILURE(status)) { 357388a9902SJung-uk Kim return (status); 358388a9902SJung-uk Kim } 359b0ed7a91SLin Ming 360b0ed7a91SLin Ming status = acpi_ut_remove_interface(interface_name); 361b0ed7a91SLin Ming 362b0ed7a91SLin Ming acpi_os_release_mutex(acpi_gbl_osi_mutex); 363b0ed7a91SLin Ming return (status); 364b0ed7a91SLin Ming } 365b0ed7a91SLin Ming 366b0ed7a91SLin Ming ACPI_EXPORT_SYMBOL(acpi_remove_interface) 367b0ed7a91SLin Ming 368b0ed7a91SLin Ming /***************************************************************************** 369b0ed7a91SLin Ming * 370b0ed7a91SLin Ming * FUNCTION: acpi_install_interface_handler 371b0ed7a91SLin Ming * 372ba494beeSBob Moore * PARAMETERS: handler - The _OSI interface handler to install 373b0ed7a91SLin Ming * NULL means "remove existing handler" 374b0ed7a91SLin Ming * 375b0ed7a91SLin Ming * RETURN: Status 376b0ed7a91SLin Ming * 377b0ed7a91SLin Ming * DESCRIPTION: Install a handler for the predefined _OSI ACPI method. 378b0ed7a91SLin Ming * invoked during execution of the internal implementation of 379b0ed7a91SLin Ming * _OSI. A NULL handler simply removes any existing handler. 380b0ed7a91SLin Ming * 381b0ed7a91SLin Ming ****************************************************************************/ 382b0ed7a91SLin Ming acpi_status acpi_install_interface_handler(acpi_interface_handler handler) 383b0ed7a91SLin Ming { 384388a9902SJung-uk Kim acpi_status status; 385b0ed7a91SLin Ming 386388a9902SJung-uk Kim status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 387388a9902SJung-uk Kim if (ACPI_FAILURE(status)) { 388388a9902SJung-uk Kim return (status); 389388a9902SJung-uk Kim } 390b0ed7a91SLin Ming 391b0ed7a91SLin Ming if (handler && acpi_gbl_interface_handler) { 392b0ed7a91SLin Ming status = AE_ALREADY_EXISTS; 393b0ed7a91SLin Ming } else { 394b0ed7a91SLin Ming acpi_gbl_interface_handler = handler; 395b0ed7a91SLin Ming } 396b0ed7a91SLin Ming 397b0ed7a91SLin Ming acpi_os_release_mutex(acpi_gbl_osi_mutex); 398b0ed7a91SLin Ming return (status); 399b0ed7a91SLin Ming } 400b0ed7a91SLin Ming 401b0ed7a91SLin Ming ACPI_EXPORT_SYMBOL(acpi_install_interface_handler) 402f654c0feSLin Ming 403f654c0feSLin Ming /***************************************************************************** 404f654c0feSLin Ming * 4052cf9f5bcSLv Zheng * FUNCTION: acpi_update_interfaces 4062cf9f5bcSLv Zheng * 4072cf9f5bcSLv Zheng * PARAMETERS: action - Actions to be performed during the 4082cf9f5bcSLv Zheng * update 4092cf9f5bcSLv Zheng * 4102cf9f5bcSLv Zheng * RETURN: Status 4112cf9f5bcSLv Zheng * 4122cf9f5bcSLv Zheng * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor 4132cf9f5bcSLv Zheng * string or/and feature group strings. 4142cf9f5bcSLv Zheng * 4152cf9f5bcSLv Zheng ****************************************************************************/ 4162cf9f5bcSLv Zheng acpi_status acpi_update_interfaces(u8 action) 4172cf9f5bcSLv Zheng { 4182cf9f5bcSLv Zheng acpi_status status; 4192cf9f5bcSLv Zheng 4202cf9f5bcSLv Zheng status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 4212cf9f5bcSLv Zheng if (ACPI_FAILURE(status)) { 4222cf9f5bcSLv Zheng return (status); 4232cf9f5bcSLv Zheng } 4242cf9f5bcSLv Zheng 4252cf9f5bcSLv Zheng status = acpi_ut_update_interfaces(action); 4262cf9f5bcSLv Zheng 4272cf9f5bcSLv Zheng acpi_os_release_mutex(acpi_gbl_osi_mutex); 4282cf9f5bcSLv Zheng return (status); 4292cf9f5bcSLv Zheng } 4302cf9f5bcSLv Zheng 4312cf9f5bcSLv Zheng /***************************************************************************** 4322cf9f5bcSLv Zheng * 433f654c0feSLin Ming * FUNCTION: acpi_check_address_range 434f654c0feSLin Ming * 435f654c0feSLin Ming * PARAMETERS: space_id - Address space ID 436ba494beeSBob Moore * address - Start address 437ba494beeSBob Moore * length - Length 438ba494beeSBob Moore * warn - TRUE if warning on overlap desired 439f654c0feSLin Ming * 440f654c0feSLin Ming * RETURN: Count of the number of conflicts detected. 441f654c0feSLin Ming * 442f654c0feSLin Ming * DESCRIPTION: Check if the input address range overlaps any of the 443f654c0feSLin Ming * ASL operation region address ranges. 444f654c0feSLin Ming * 445f654c0feSLin Ming ****************************************************************************/ 4462cf9f5bcSLv Zheng 447f654c0feSLin Ming u32 448f654c0feSLin Ming acpi_check_address_range(acpi_adr_space_type space_id, 449f654c0feSLin Ming acpi_physical_address address, 450f654c0feSLin Ming acpi_size length, u8 warn) 451f654c0feSLin Ming { 452f654c0feSLin Ming u32 overlaps; 453f654c0feSLin Ming acpi_status status; 454f654c0feSLin Ming 455f654c0feSLin Ming status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); 456f654c0feSLin Ming if (ACPI_FAILURE(status)) { 457f654c0feSLin Ming return (0); 458f654c0feSLin Ming } 459f654c0feSLin Ming 460f654c0feSLin Ming overlaps = acpi_ut_check_address_range(space_id, address, 461f654c0feSLin Ming (u32)length, warn); 462f654c0feSLin Ming 463f654c0feSLin Ming (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); 464f654c0feSLin Ming return (overlaps); 465f654c0feSLin Ming } 466f654c0feSLin Ming 467f654c0feSLin Ming ACPI_EXPORT_SYMBOL(acpi_check_address_range) 468b0ed7a91SLin Ming #endif /* !ACPI_ASL_COMPILER */ 469be030a57SBob Moore /******************************************************************************* 470be030a57SBob Moore * 471be030a57SBob Moore * FUNCTION: acpi_decode_pld_buffer 472be030a57SBob Moore * 473be030a57SBob Moore * PARAMETERS: in_buffer - Buffer returned by _PLD method 474be030a57SBob Moore * length - Length of the in_buffer 475be030a57SBob Moore * return_buffer - Where the decode buffer is returned 476be030a57SBob Moore * 477be030a57SBob Moore * RETURN: Status and the decoded _PLD buffer. User must deallocate 478be030a57SBob Moore * the buffer via ACPI_FREE. 479be030a57SBob Moore * 480be030a57SBob Moore * DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into 481be030a57SBob Moore * a local struct that is much more useful to an ACPI driver. 482be030a57SBob Moore * 483be030a57SBob Moore ******************************************************************************/ 484be030a57SBob Moore acpi_status 485be030a57SBob Moore acpi_decode_pld_buffer(u8 *in_buffer, 486be030a57SBob Moore acpi_size length, struct acpi_pld_info **return_buffer) 487be030a57SBob Moore { 488be030a57SBob Moore struct acpi_pld_info *pld_info; 489be030a57SBob Moore u32 *buffer = ACPI_CAST_PTR(u32, in_buffer); 490be030a57SBob Moore u32 dword; 491be030a57SBob Moore 492be030a57SBob Moore /* Parameter validation */ 493be030a57SBob Moore 49435349697SBob Moore if (!in_buffer || !return_buffer 49535349697SBob Moore || (length < ACPI_PLD_REV1_BUFFER_SIZE)) { 496be030a57SBob Moore return (AE_BAD_PARAMETER); 497be030a57SBob Moore } 498be030a57SBob Moore 499be030a57SBob Moore pld_info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pld_info)); 500be030a57SBob Moore if (!pld_info) { 501be030a57SBob Moore return (AE_NO_MEMORY); 502be030a57SBob Moore } 503be030a57SBob Moore 504be030a57SBob Moore /* First 32-bit DWord */ 505be030a57SBob Moore 506be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[0]); 507be030a57SBob Moore pld_info->revision = ACPI_PLD_GET_REVISION(&dword); 508be030a57SBob Moore pld_info->ignore_color = ACPI_PLD_GET_IGNORE_COLOR(&dword); 5094dcd78d8SBob Moore pld_info->red = ACPI_PLD_GET_RED(&dword); 5104dcd78d8SBob Moore pld_info->green = ACPI_PLD_GET_GREEN(&dword); 5114dcd78d8SBob Moore pld_info->blue = ACPI_PLD_GET_BLUE(&dword); 512be030a57SBob Moore 513be030a57SBob Moore /* Second 32-bit DWord */ 514be030a57SBob Moore 515be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[1]); 516be030a57SBob Moore pld_info->width = ACPI_PLD_GET_WIDTH(&dword); 517be030a57SBob Moore pld_info->height = ACPI_PLD_GET_HEIGHT(&dword); 518be030a57SBob Moore 519be030a57SBob Moore /* Third 32-bit DWord */ 520be030a57SBob Moore 521be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[2]); 522be030a57SBob Moore pld_info->user_visible = ACPI_PLD_GET_USER_VISIBLE(&dword); 523be030a57SBob Moore pld_info->dock = ACPI_PLD_GET_DOCK(&dword); 524be030a57SBob Moore pld_info->lid = ACPI_PLD_GET_LID(&dword); 525be030a57SBob Moore pld_info->panel = ACPI_PLD_GET_PANEL(&dword); 526be030a57SBob Moore pld_info->vertical_position = ACPI_PLD_GET_VERTICAL(&dword); 527be030a57SBob Moore pld_info->horizontal_position = ACPI_PLD_GET_HORIZONTAL(&dword); 528be030a57SBob Moore pld_info->shape = ACPI_PLD_GET_SHAPE(&dword); 529be030a57SBob Moore pld_info->group_orientation = ACPI_PLD_GET_ORIENTATION(&dword); 530be030a57SBob Moore pld_info->group_token = ACPI_PLD_GET_TOKEN(&dword); 531be030a57SBob Moore pld_info->group_position = ACPI_PLD_GET_POSITION(&dword); 532be030a57SBob Moore pld_info->bay = ACPI_PLD_GET_BAY(&dword); 533be030a57SBob Moore 534be030a57SBob Moore /* Fourth 32-bit DWord */ 535be030a57SBob Moore 536be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[3]); 537be030a57SBob Moore pld_info->ejectable = ACPI_PLD_GET_EJECTABLE(&dword); 538be030a57SBob Moore pld_info->ospm_eject_required = ACPI_PLD_GET_OSPM_EJECT(&dword); 539be030a57SBob Moore pld_info->cabinet_number = ACPI_PLD_GET_CABINET(&dword); 540be030a57SBob Moore pld_info->card_cage_number = ACPI_PLD_GET_CARD_CAGE(&dword); 541be030a57SBob Moore pld_info->reference = ACPI_PLD_GET_REFERENCE(&dword); 542be030a57SBob Moore pld_info->rotation = ACPI_PLD_GET_ROTATION(&dword); 543be030a57SBob Moore pld_info->order = ACPI_PLD_GET_ORDER(&dword); 544be030a57SBob Moore 54535349697SBob Moore if (length >= ACPI_PLD_REV2_BUFFER_SIZE) { 546be030a57SBob Moore 547be030a57SBob Moore /* Fifth 32-bit DWord (Revision 2 of _PLD) */ 548be030a57SBob Moore 549be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[4]); 550be030a57SBob Moore pld_info->vertical_offset = ACPI_PLD_GET_VERT_OFFSET(&dword); 551be030a57SBob Moore pld_info->horizontal_offset = ACPI_PLD_GET_HORIZ_OFFSET(&dword); 552be030a57SBob Moore } 553be030a57SBob Moore 554be030a57SBob Moore *return_buffer = pld_info; 555be030a57SBob Moore return (AE_OK); 556be030a57SBob Moore } 557be030a57SBob Moore 558be030a57SBob Moore ACPI_EXPORT_SYMBOL(acpi_decode_pld_buffer) 559