195b482a8SLen Brown /****************************************************************************** 295b482a8SLen Brown * 3d978348bSBob Moore * Module Name: utxface - External interfaces, miscellaneous utility functions 495b482a8SLen Brown * 595b482a8SLen Brown *****************************************************************************/ 695b482a8SLen Brown 795b482a8SLen Brown /* 825f044e6SBob Moore * Copyright (C) 2000 - 2013, 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 ******************************************************************************/ 6445c9f78bSLv Zheng acpi_status __init acpi_terminate(void) 6595b482a8SLen Brown { 6695b482a8SLen Brown acpi_status status; 6795b482a8SLen Brown 6895b482a8SLen Brown ACPI_FUNCTION_TRACE(acpi_terminate); 6995b482a8SLen Brown 702f977b36SBob Moore /* Just exit if subsystem is already shutdown */ 712f977b36SBob Moore 722f977b36SBob Moore if (acpi_gbl_shutdown) { 732f977b36SBob Moore ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated")); 742f977b36SBob Moore return_ACPI_STATUS(AE_OK); 752f977b36SBob Moore } 762f977b36SBob Moore 772f977b36SBob Moore /* Subsystem appears active, go ahead and shut it down */ 782f977b36SBob Moore 792f977b36SBob Moore acpi_gbl_shutdown = TRUE; 802f977b36SBob Moore acpi_gbl_startup_flags = 0; 812f977b36SBob Moore ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n")); 822f977b36SBob Moore 8395b482a8SLen Brown /* Terminate the AML Debugger if present */ 8495b482a8SLen Brown 8595b482a8SLen Brown ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE); 8695b482a8SLen Brown 8795b482a8SLen Brown /* Shutdown and free all resources */ 8895b482a8SLen Brown 8995b482a8SLen Brown acpi_ut_subsystem_shutdown(); 9095b482a8SLen Brown 9195b482a8SLen Brown /* Free the mutex objects */ 9295b482a8SLen Brown 9395b482a8SLen Brown acpi_ut_mutex_terminate(); 9495b482a8SLen Brown 9595b482a8SLen Brown #ifdef ACPI_DEBUGGER 9695b482a8SLen Brown 9795b482a8SLen Brown /* Shut down the debugger */ 9895b482a8SLen Brown 9995b482a8SLen Brown acpi_db_terminate(); 10095b482a8SLen Brown #endif 10195b482a8SLen Brown 10295b482a8SLen Brown /* Now we can shutdown the OS-dependent layer */ 10395b482a8SLen Brown 10495b482a8SLen Brown status = acpi_os_terminate(); 10595b482a8SLen Brown return_ACPI_STATUS(status); 10695b482a8SLen Brown } 10795b482a8SLen Brown 108d21f600bSLv Zheng ACPI_EXPORT_SYMBOL_INIT(acpi_terminate) 1092f977b36SBob Moore 11095b482a8SLen Brown #ifndef ACPI_ASL_COMPILER 11195b482a8SLen Brown #ifdef ACPI_FUTURE_USAGE 11295b482a8SLen Brown /******************************************************************************* 11395b482a8SLen Brown * 11495b482a8SLen Brown * FUNCTION: acpi_subsystem_status 11595b482a8SLen Brown * 11695b482a8SLen Brown * PARAMETERS: None 11795b482a8SLen Brown * 11895b482a8SLen Brown * RETURN: Status of the ACPI subsystem 11995b482a8SLen Brown * 12095b482a8SLen Brown * DESCRIPTION: Other drivers that use the ACPI subsystem should call this 12195b482a8SLen Brown * before making any other calls, to ensure the subsystem 12295b482a8SLen Brown * initialized successfully. 12395b482a8SLen Brown * 12495b482a8SLen Brown ******************************************************************************/ 12595b482a8SLen Brown acpi_status acpi_subsystem_status(void) 12695b482a8SLen Brown { 12795b482a8SLen Brown 12895b482a8SLen Brown if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) { 12995b482a8SLen Brown return (AE_OK); 13095b482a8SLen Brown } else { 13195b482a8SLen Brown return (AE_ERROR); 13295b482a8SLen Brown } 13395b482a8SLen Brown } 13495b482a8SLen Brown 13595b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_subsystem_status) 13695b482a8SLen Brown 13795b482a8SLen Brown /******************************************************************************* 13895b482a8SLen Brown * 13995b482a8SLen Brown * FUNCTION: acpi_get_system_info 14095b482a8SLen Brown * 14195b482a8SLen Brown * PARAMETERS: out_buffer - A buffer to receive the resources for the 14295b482a8SLen Brown * device 14395b482a8SLen Brown * 144ba494beeSBob Moore * RETURN: status - the status of the call 14595b482a8SLen Brown * 14695b482a8SLen Brown * DESCRIPTION: This function is called to get information about the current 14795b482a8SLen Brown * state of the ACPI subsystem. It will return system information 14895b482a8SLen Brown * in the out_buffer. 14995b482a8SLen Brown * 15095b482a8SLen Brown * If the function fails an appropriate status will be returned 15195b482a8SLen Brown * and the value of out_buffer is undefined. 15295b482a8SLen Brown * 15395b482a8SLen Brown ******************************************************************************/ 15495b482a8SLen Brown acpi_status acpi_get_system_info(struct acpi_buffer * out_buffer) 15595b482a8SLen Brown { 15695b482a8SLen Brown struct acpi_system_info *info_ptr; 15795b482a8SLen Brown acpi_status status; 15895b482a8SLen Brown 15995b482a8SLen Brown ACPI_FUNCTION_TRACE(acpi_get_system_info); 16095b482a8SLen Brown 16195b482a8SLen Brown /* Parameter validation */ 16295b482a8SLen Brown 16395b482a8SLen Brown status = acpi_ut_validate_buffer(out_buffer); 16495b482a8SLen Brown if (ACPI_FAILURE(status)) { 16595b482a8SLen Brown return_ACPI_STATUS(status); 16695b482a8SLen Brown } 16795b482a8SLen Brown 16895b482a8SLen Brown /* Validate/Allocate/Clear caller buffer */ 16995b482a8SLen Brown 17095b482a8SLen Brown status = 17195b482a8SLen Brown acpi_ut_initialize_buffer(out_buffer, 17295b482a8SLen Brown sizeof(struct acpi_system_info)); 17395b482a8SLen Brown if (ACPI_FAILURE(status)) { 17495b482a8SLen Brown return_ACPI_STATUS(status); 17595b482a8SLen Brown } 17695b482a8SLen Brown 17795b482a8SLen Brown /* 17895b482a8SLen Brown * Populate the return buffer 17995b482a8SLen Brown */ 18095b482a8SLen Brown info_ptr = (struct acpi_system_info *)out_buffer->pointer; 18195b482a8SLen Brown 18295b482a8SLen Brown info_ptr->acpi_ca_version = ACPI_CA_VERSION; 18395b482a8SLen Brown 18495b482a8SLen Brown /* System flags (ACPI capabilities) */ 18595b482a8SLen Brown 18695b482a8SLen Brown info_ptr->flags = ACPI_SYS_MODE_ACPI; 18795b482a8SLen Brown 18895b482a8SLen Brown /* Timer resolution - 24 or 32 bits */ 18995b482a8SLen Brown 19095b482a8SLen Brown if (acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER) { 19195b482a8SLen Brown info_ptr->timer_resolution = 24; 19295b482a8SLen Brown } else { 19395b482a8SLen Brown info_ptr->timer_resolution = 32; 19495b482a8SLen Brown } 19595b482a8SLen Brown 19695b482a8SLen Brown /* Clear the reserved fields */ 19795b482a8SLen Brown 19895b482a8SLen Brown info_ptr->reserved1 = 0; 19995b482a8SLen Brown info_ptr->reserved2 = 0; 20095b482a8SLen Brown 20195b482a8SLen Brown /* Current debug levels */ 20295b482a8SLen Brown 20395b482a8SLen Brown info_ptr->debug_layer = acpi_dbg_layer; 20495b482a8SLen Brown info_ptr->debug_level = acpi_dbg_level; 20595b482a8SLen Brown 20695b482a8SLen Brown return_ACPI_STATUS(AE_OK); 20795b482a8SLen Brown } 20895b482a8SLen Brown 20995b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_get_system_info) 21095b482a8SLen Brown 2119187a415SLv Zheng /******************************************************************************* 2129187a415SLv Zheng * 2139187a415SLv Zheng * FUNCTION: acpi_get_statistics 2149187a415SLv Zheng * 2159187a415SLv Zheng * PARAMETERS: stats - Where the statistics are returned 2169187a415SLv Zheng * 2179187a415SLv Zheng * RETURN: status - the status of the call 2189187a415SLv Zheng * 2199187a415SLv Zheng * DESCRIPTION: Get the contents of the various system counters 2209187a415SLv Zheng * 2219187a415SLv Zheng ******************************************************************************/ 2229187a415SLv Zheng acpi_status acpi_get_statistics(struct acpi_statistics *stats) 2239187a415SLv Zheng { 2249187a415SLv Zheng ACPI_FUNCTION_TRACE(acpi_get_statistics); 2259187a415SLv Zheng 2269187a415SLv Zheng /* Parameter validation */ 2279187a415SLv Zheng 2289187a415SLv Zheng if (!stats) { 2299187a415SLv Zheng return_ACPI_STATUS(AE_BAD_PARAMETER); 2309187a415SLv Zheng } 2319187a415SLv Zheng 2329187a415SLv Zheng /* Various interrupt-based event counters */ 2339187a415SLv Zheng 2349187a415SLv Zheng stats->sci_count = acpi_sci_count; 2359187a415SLv Zheng stats->gpe_count = acpi_gpe_count; 2369187a415SLv Zheng 2379187a415SLv Zheng ACPI_MEMCPY(stats->fixed_event_count, acpi_fixed_event_count, 2389187a415SLv Zheng sizeof(acpi_fixed_event_count)); 2399187a415SLv Zheng 2409187a415SLv Zheng /* Other counters */ 2419187a415SLv Zheng 2429187a415SLv Zheng stats->method_count = acpi_method_count; 2439187a415SLv Zheng 2449187a415SLv Zheng return_ACPI_STATUS(AE_OK); 2459187a415SLv Zheng } 2469187a415SLv Zheng 2479187a415SLv Zheng ACPI_EXPORT_SYMBOL(acpi_get_statistics) 2489187a415SLv Zheng 24995b482a8SLen Brown /***************************************************************************** 25095b482a8SLen Brown * 25195b482a8SLen Brown * FUNCTION: acpi_install_initialization_handler 25295b482a8SLen Brown * 253ba494beeSBob Moore * PARAMETERS: handler - Callback procedure 254ba494beeSBob Moore * function - Not (currently) used, see below 25595b482a8SLen Brown * 25695b482a8SLen Brown * RETURN: Status 25795b482a8SLen Brown * 25895b482a8SLen Brown * DESCRIPTION: Install an initialization handler 25995b482a8SLen Brown * 26095b482a8SLen Brown * TBD: When a second function is added, must save the Function also. 26195b482a8SLen Brown * 26295b482a8SLen Brown ****************************************************************************/ 26395b482a8SLen Brown acpi_status 26495b482a8SLen Brown acpi_install_initialization_handler(acpi_init_handler handler, u32 function) 26595b482a8SLen Brown { 26695b482a8SLen Brown 26795b482a8SLen Brown if (!handler) { 26895b482a8SLen Brown return (AE_BAD_PARAMETER); 26995b482a8SLen Brown } 27095b482a8SLen Brown 27195b482a8SLen Brown if (acpi_gbl_init_handler) { 27295b482a8SLen Brown return (AE_ALREADY_EXISTS); 27395b482a8SLen Brown } 27495b482a8SLen Brown 27595b482a8SLen Brown acpi_gbl_init_handler = handler; 27668aafc35SBob Moore return (AE_OK); 27795b482a8SLen Brown } 27895b482a8SLen Brown 27995b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler) 28095b482a8SLen Brown #endif /* ACPI_FUTURE_USAGE */ 281b0ed7a91SLin Ming 28295b482a8SLen Brown /***************************************************************************** 28395b482a8SLen Brown * 28495b482a8SLen Brown * FUNCTION: acpi_purge_cached_objects 28595b482a8SLen Brown * 28695b482a8SLen Brown * PARAMETERS: None 28795b482a8SLen Brown * 28895b482a8SLen Brown * RETURN: Status 28995b482a8SLen Brown * 29095b482a8SLen Brown * DESCRIPTION: Empty all caches (delete the cached objects) 29195b482a8SLen Brown * 29295b482a8SLen Brown ****************************************************************************/ 29395b482a8SLen Brown acpi_status acpi_purge_cached_objects(void) 29495b482a8SLen Brown { 29595b482a8SLen Brown ACPI_FUNCTION_TRACE(acpi_purge_cached_objects); 29695b482a8SLen Brown 29795b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_state_cache); 29895b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_operand_cache); 29995b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_ps_node_cache); 30095b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_ps_node_ext_cache); 30168aafc35SBob Moore 30295b482a8SLen Brown return_ACPI_STATUS(AE_OK); 30395b482a8SLen Brown } 30495b482a8SLen Brown 30595b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_purge_cached_objects) 306b0ed7a91SLin Ming 307b0ed7a91SLin Ming /***************************************************************************** 308b0ed7a91SLin Ming * 309b0ed7a91SLin Ming * FUNCTION: acpi_install_interface 310b0ed7a91SLin Ming * 311b0ed7a91SLin Ming * PARAMETERS: interface_name - The interface to install 312b0ed7a91SLin Ming * 313b0ed7a91SLin Ming * RETURN: Status 314b0ed7a91SLin Ming * 315b0ed7a91SLin Ming * DESCRIPTION: Install an _OSI interface to the global list 316b0ed7a91SLin Ming * 317b0ed7a91SLin Ming ****************************************************************************/ 318b0ed7a91SLin Ming acpi_status acpi_install_interface(acpi_string interface_name) 319b0ed7a91SLin Ming { 320b0ed7a91SLin Ming acpi_status status; 321b0ed7a91SLin Ming struct acpi_interface_info *interface_info; 322b0ed7a91SLin Ming 323b0ed7a91SLin Ming /* Parameter validation */ 324b0ed7a91SLin Ming 325b0ed7a91SLin Ming if (!interface_name || (ACPI_STRLEN(interface_name) == 0)) { 326b0ed7a91SLin Ming return (AE_BAD_PARAMETER); 327b0ed7a91SLin Ming } 328b0ed7a91SLin Ming 329388a9902SJung-uk Kim status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 330388a9902SJung-uk Kim if (ACPI_FAILURE(status)) { 331388a9902SJung-uk Kim return (status); 332388a9902SJung-uk Kim } 333b0ed7a91SLin Ming 334b0ed7a91SLin Ming /* Check if the interface name is already in the global list */ 335b0ed7a91SLin Ming 336b0ed7a91SLin Ming interface_info = acpi_ut_get_interface(interface_name); 337b0ed7a91SLin Ming if (interface_info) { 338b0ed7a91SLin Ming /* 339b0ed7a91SLin Ming * The interface already exists in the list. This is OK if the 340b0ed7a91SLin Ming * interface has been marked invalid -- just clear the bit. 341b0ed7a91SLin Ming */ 342b0ed7a91SLin Ming if (interface_info->flags & ACPI_OSI_INVALID) { 343b0ed7a91SLin Ming interface_info->flags &= ~ACPI_OSI_INVALID; 344b0ed7a91SLin Ming status = AE_OK; 345b0ed7a91SLin Ming } else { 346b0ed7a91SLin Ming status = AE_ALREADY_EXISTS; 347b0ed7a91SLin Ming } 348b0ed7a91SLin Ming } else { 349b0ed7a91SLin Ming /* New interface name, install into the global list */ 350b0ed7a91SLin Ming 351b0ed7a91SLin Ming status = acpi_ut_install_interface(interface_name); 352b0ed7a91SLin Ming } 353b0ed7a91SLin Ming 354b0ed7a91SLin Ming acpi_os_release_mutex(acpi_gbl_osi_mutex); 355b0ed7a91SLin Ming return (status); 356b0ed7a91SLin Ming } 357b0ed7a91SLin Ming 358b0ed7a91SLin Ming ACPI_EXPORT_SYMBOL(acpi_install_interface) 359b0ed7a91SLin Ming 360b0ed7a91SLin Ming /***************************************************************************** 361b0ed7a91SLin Ming * 362b0ed7a91SLin Ming * FUNCTION: acpi_remove_interface 363b0ed7a91SLin Ming * 364b0ed7a91SLin Ming * PARAMETERS: interface_name - The interface to remove 365b0ed7a91SLin Ming * 366b0ed7a91SLin Ming * RETURN: Status 367b0ed7a91SLin Ming * 368b0ed7a91SLin Ming * DESCRIPTION: Remove an _OSI interface from the global list 369b0ed7a91SLin Ming * 370b0ed7a91SLin Ming ****************************************************************************/ 371b0ed7a91SLin Ming acpi_status acpi_remove_interface(acpi_string interface_name) 372b0ed7a91SLin Ming { 373b0ed7a91SLin Ming acpi_status status; 374b0ed7a91SLin Ming 375b0ed7a91SLin Ming /* Parameter validation */ 376b0ed7a91SLin Ming 377b0ed7a91SLin Ming if (!interface_name || (ACPI_STRLEN(interface_name) == 0)) { 378b0ed7a91SLin Ming return (AE_BAD_PARAMETER); 379b0ed7a91SLin Ming } 380b0ed7a91SLin Ming 381388a9902SJung-uk Kim status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 382388a9902SJung-uk Kim if (ACPI_FAILURE(status)) { 383388a9902SJung-uk Kim return (status); 384388a9902SJung-uk Kim } 385b0ed7a91SLin Ming 386b0ed7a91SLin Ming status = acpi_ut_remove_interface(interface_name); 387b0ed7a91SLin Ming 388b0ed7a91SLin Ming acpi_os_release_mutex(acpi_gbl_osi_mutex); 389b0ed7a91SLin Ming return (status); 390b0ed7a91SLin Ming } 391b0ed7a91SLin Ming 392b0ed7a91SLin Ming ACPI_EXPORT_SYMBOL(acpi_remove_interface) 393b0ed7a91SLin Ming 394b0ed7a91SLin Ming /***************************************************************************** 395b0ed7a91SLin Ming * 396b0ed7a91SLin Ming * FUNCTION: acpi_install_interface_handler 397b0ed7a91SLin Ming * 398ba494beeSBob Moore * PARAMETERS: handler - The _OSI interface handler to install 399b0ed7a91SLin Ming * NULL means "remove existing handler" 400b0ed7a91SLin Ming * 401b0ed7a91SLin Ming * RETURN: Status 402b0ed7a91SLin Ming * 403b0ed7a91SLin Ming * DESCRIPTION: Install a handler for the predefined _OSI ACPI method. 404b0ed7a91SLin Ming * invoked during execution of the internal implementation of 405b0ed7a91SLin Ming * _OSI. A NULL handler simply removes any existing handler. 406b0ed7a91SLin Ming * 407b0ed7a91SLin Ming ****************************************************************************/ 408b0ed7a91SLin Ming acpi_status acpi_install_interface_handler(acpi_interface_handler handler) 409b0ed7a91SLin Ming { 410388a9902SJung-uk Kim acpi_status status; 411b0ed7a91SLin Ming 412388a9902SJung-uk Kim status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 413388a9902SJung-uk Kim if (ACPI_FAILURE(status)) { 414388a9902SJung-uk Kim return (status); 415388a9902SJung-uk Kim } 416b0ed7a91SLin Ming 417b0ed7a91SLin Ming if (handler && acpi_gbl_interface_handler) { 418b0ed7a91SLin Ming status = AE_ALREADY_EXISTS; 419b0ed7a91SLin Ming } else { 420b0ed7a91SLin Ming acpi_gbl_interface_handler = handler; 421b0ed7a91SLin Ming } 422b0ed7a91SLin Ming 423b0ed7a91SLin Ming acpi_os_release_mutex(acpi_gbl_osi_mutex); 424b0ed7a91SLin Ming return (status); 425b0ed7a91SLin Ming } 426b0ed7a91SLin Ming 427b0ed7a91SLin Ming ACPI_EXPORT_SYMBOL(acpi_install_interface_handler) 428f654c0feSLin Ming 429f654c0feSLin Ming /***************************************************************************** 430f654c0feSLin Ming * 4312cf9f5bcSLv Zheng * FUNCTION: acpi_update_interfaces 4322cf9f5bcSLv Zheng * 4332cf9f5bcSLv Zheng * PARAMETERS: action - Actions to be performed during the 4342cf9f5bcSLv Zheng * update 4352cf9f5bcSLv Zheng * 4362cf9f5bcSLv Zheng * RETURN: Status 4372cf9f5bcSLv Zheng * 4382cf9f5bcSLv Zheng * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor 4392cf9f5bcSLv Zheng * string or/and feature group strings. 4402cf9f5bcSLv Zheng * 4412cf9f5bcSLv Zheng ****************************************************************************/ 4422cf9f5bcSLv Zheng acpi_status acpi_update_interfaces(u8 action) 4432cf9f5bcSLv Zheng { 4442cf9f5bcSLv Zheng acpi_status status; 4452cf9f5bcSLv Zheng 4462cf9f5bcSLv Zheng status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 4472cf9f5bcSLv Zheng if (ACPI_FAILURE(status)) { 4482cf9f5bcSLv Zheng return (status); 4492cf9f5bcSLv Zheng } 4502cf9f5bcSLv Zheng 4512cf9f5bcSLv Zheng status = acpi_ut_update_interfaces(action); 4522cf9f5bcSLv Zheng 4532cf9f5bcSLv Zheng acpi_os_release_mutex(acpi_gbl_osi_mutex); 4542cf9f5bcSLv Zheng return (status); 4552cf9f5bcSLv Zheng } 4562cf9f5bcSLv Zheng 4572cf9f5bcSLv Zheng /***************************************************************************** 4582cf9f5bcSLv Zheng * 459f654c0feSLin Ming * FUNCTION: acpi_check_address_range 460f654c0feSLin Ming * 461f654c0feSLin Ming * PARAMETERS: space_id - Address space ID 462ba494beeSBob Moore * address - Start address 463ba494beeSBob Moore * length - Length 464ba494beeSBob Moore * warn - TRUE if warning on overlap desired 465f654c0feSLin Ming * 466f654c0feSLin Ming * RETURN: Count of the number of conflicts detected. 467f654c0feSLin Ming * 468f654c0feSLin Ming * DESCRIPTION: Check if the input address range overlaps any of the 469f654c0feSLin Ming * ASL operation region address ranges. 470f654c0feSLin Ming * 471f654c0feSLin Ming ****************************************************************************/ 4722cf9f5bcSLv Zheng 473f654c0feSLin Ming u32 474f654c0feSLin Ming acpi_check_address_range(acpi_adr_space_type space_id, 475f654c0feSLin Ming acpi_physical_address address, 476f654c0feSLin Ming acpi_size length, u8 warn) 477f654c0feSLin Ming { 478f654c0feSLin Ming u32 overlaps; 479f654c0feSLin Ming acpi_status status; 480f654c0feSLin Ming 481f654c0feSLin Ming status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); 482f654c0feSLin Ming if (ACPI_FAILURE(status)) { 483f654c0feSLin Ming return (0); 484f654c0feSLin Ming } 485f654c0feSLin Ming 486f654c0feSLin Ming overlaps = acpi_ut_check_address_range(space_id, address, 487f654c0feSLin Ming (u32)length, warn); 488f654c0feSLin Ming 489f654c0feSLin Ming (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); 490f654c0feSLin Ming return (overlaps); 491f654c0feSLin Ming } 492f654c0feSLin Ming 493f654c0feSLin Ming ACPI_EXPORT_SYMBOL(acpi_check_address_range) 494b0ed7a91SLin Ming #endif /* !ACPI_ASL_COMPILER */ 495be030a57SBob Moore /******************************************************************************* 496be030a57SBob Moore * 497be030a57SBob Moore * FUNCTION: acpi_decode_pld_buffer 498be030a57SBob Moore * 499be030a57SBob Moore * PARAMETERS: in_buffer - Buffer returned by _PLD method 500be030a57SBob Moore * length - Length of the in_buffer 501be030a57SBob Moore * return_buffer - Where the decode buffer is returned 502be030a57SBob Moore * 503be030a57SBob Moore * RETURN: Status and the decoded _PLD buffer. User must deallocate 504be030a57SBob Moore * the buffer via ACPI_FREE. 505be030a57SBob Moore * 506be030a57SBob Moore * DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into 507be030a57SBob Moore * a local struct that is much more useful to an ACPI driver. 508be030a57SBob Moore * 509be030a57SBob Moore ******************************************************************************/ 510be030a57SBob Moore acpi_status 511be030a57SBob Moore acpi_decode_pld_buffer(u8 *in_buffer, 512be030a57SBob Moore acpi_size length, struct acpi_pld_info ** return_buffer) 513be030a57SBob Moore { 514be030a57SBob Moore struct acpi_pld_info *pld_info; 515be030a57SBob Moore u32 *buffer = ACPI_CAST_PTR(u32, in_buffer); 516be030a57SBob Moore u32 dword; 517be030a57SBob Moore 518be030a57SBob Moore /* Parameter validation */ 519be030a57SBob Moore 520be030a57SBob Moore if (!in_buffer || !return_buffer || (length < 16)) { 521be030a57SBob Moore return (AE_BAD_PARAMETER); 522be030a57SBob Moore } 523be030a57SBob Moore 524be030a57SBob Moore pld_info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pld_info)); 525be030a57SBob Moore if (!pld_info) { 526be030a57SBob Moore return (AE_NO_MEMORY); 527be030a57SBob Moore } 528be030a57SBob Moore 529be030a57SBob Moore /* First 32-bit DWord */ 530be030a57SBob Moore 531be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[0]); 532be030a57SBob Moore pld_info->revision = ACPI_PLD_GET_REVISION(&dword); 533be030a57SBob Moore pld_info->ignore_color = ACPI_PLD_GET_IGNORE_COLOR(&dword); 534be030a57SBob Moore pld_info->color = ACPI_PLD_GET_COLOR(&dword); 535be030a57SBob Moore 536be030a57SBob Moore /* Second 32-bit DWord */ 537be030a57SBob Moore 538be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[1]); 539be030a57SBob Moore pld_info->width = ACPI_PLD_GET_WIDTH(&dword); 540be030a57SBob Moore pld_info->height = ACPI_PLD_GET_HEIGHT(&dword); 541be030a57SBob Moore 542be030a57SBob Moore /* Third 32-bit DWord */ 543be030a57SBob Moore 544be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[2]); 545be030a57SBob Moore pld_info->user_visible = ACPI_PLD_GET_USER_VISIBLE(&dword); 546be030a57SBob Moore pld_info->dock = ACPI_PLD_GET_DOCK(&dword); 547be030a57SBob Moore pld_info->lid = ACPI_PLD_GET_LID(&dword); 548be030a57SBob Moore pld_info->panel = ACPI_PLD_GET_PANEL(&dword); 549be030a57SBob Moore pld_info->vertical_position = ACPI_PLD_GET_VERTICAL(&dword); 550be030a57SBob Moore pld_info->horizontal_position = ACPI_PLD_GET_HORIZONTAL(&dword); 551be030a57SBob Moore pld_info->shape = ACPI_PLD_GET_SHAPE(&dword); 552be030a57SBob Moore pld_info->group_orientation = ACPI_PLD_GET_ORIENTATION(&dword); 553be030a57SBob Moore pld_info->group_token = ACPI_PLD_GET_TOKEN(&dword); 554be030a57SBob Moore pld_info->group_position = ACPI_PLD_GET_POSITION(&dword); 555be030a57SBob Moore pld_info->bay = ACPI_PLD_GET_BAY(&dword); 556be030a57SBob Moore 557be030a57SBob Moore /* Fourth 32-bit DWord */ 558be030a57SBob Moore 559be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[3]); 560be030a57SBob Moore pld_info->ejectable = ACPI_PLD_GET_EJECTABLE(&dword); 561be030a57SBob Moore pld_info->ospm_eject_required = ACPI_PLD_GET_OSPM_EJECT(&dword); 562be030a57SBob Moore pld_info->cabinet_number = ACPI_PLD_GET_CABINET(&dword); 563be030a57SBob Moore pld_info->card_cage_number = ACPI_PLD_GET_CARD_CAGE(&dword); 564be030a57SBob Moore pld_info->reference = ACPI_PLD_GET_REFERENCE(&dword); 565be030a57SBob Moore pld_info->rotation = ACPI_PLD_GET_ROTATION(&dword); 566be030a57SBob Moore pld_info->order = ACPI_PLD_GET_ORDER(&dword); 567be030a57SBob Moore 568be030a57SBob Moore if (length >= ACPI_PLD_BUFFER_SIZE) { 569be030a57SBob Moore 570be030a57SBob Moore /* Fifth 32-bit DWord (Revision 2 of _PLD) */ 571be030a57SBob Moore 572be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[4]); 573be030a57SBob Moore pld_info->vertical_offset = ACPI_PLD_GET_VERT_OFFSET(&dword); 574be030a57SBob Moore pld_info->horizontal_offset = ACPI_PLD_GET_HORIZ_OFFSET(&dword); 575be030a57SBob Moore } 576be030a57SBob Moore 577be030a57SBob Moore *return_buffer = pld_info; 578be030a57SBob Moore return (AE_OK); 579be030a57SBob Moore } 580be030a57SBob Moore 581be030a57SBob Moore ACPI_EXPORT_SYMBOL(acpi_decode_pld_buffer) 582