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 44214f2c90SPaul Gortmaker #include <linux/export.h> 4595b482a8SLen Brown #include <acpi/acpi.h> 46e2f7a777SLen Brown #include "accommon.h" 47e2f7a777SLen Brown #include "acdebug.h" 4895b482a8SLen Brown 4995b482a8SLen Brown #define _COMPONENT ACPI_UTILITIES 5095b482a8SLen Brown ACPI_MODULE_NAME("utxface") 5195b482a8SLen Brown 5295b482a8SLen Brown /******************************************************************************* 5395b482a8SLen Brown * 5495b482a8SLen Brown * FUNCTION: acpi_terminate 5595b482a8SLen Brown * 5695b482a8SLen Brown * PARAMETERS: None 5795b482a8SLen Brown * 5895b482a8SLen Brown * RETURN: Status 5995b482a8SLen Brown * 602f977b36SBob Moore * DESCRIPTION: Shutdown the ACPICA subsystem and release all resources. 6195b482a8SLen Brown * 6295b482a8SLen Brown ******************************************************************************/ 6395b482a8SLen Brown acpi_status acpi_terminate(void) 6495b482a8SLen Brown { 6595b482a8SLen Brown acpi_status status; 6695b482a8SLen Brown 6795b482a8SLen Brown ACPI_FUNCTION_TRACE(acpi_terminate); 6895b482a8SLen Brown 692f977b36SBob Moore /* Just exit if subsystem is already shutdown */ 702f977b36SBob Moore 712f977b36SBob Moore if (acpi_gbl_shutdown) { 722f977b36SBob Moore ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated")); 732f977b36SBob Moore return_ACPI_STATUS(AE_OK); 742f977b36SBob Moore } 752f977b36SBob Moore 762f977b36SBob Moore /* Subsystem appears active, go ahead and shut it down */ 772f977b36SBob Moore 782f977b36SBob Moore acpi_gbl_shutdown = TRUE; 792f977b36SBob Moore acpi_gbl_startup_flags = 0; 802f977b36SBob Moore ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n")); 812f977b36SBob Moore 8295b482a8SLen Brown /* Terminate the AML Debugger if present */ 8395b482a8SLen Brown 8495b482a8SLen Brown ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE); 8595b482a8SLen Brown 8695b482a8SLen Brown /* Shutdown and free all resources */ 8795b482a8SLen Brown 8895b482a8SLen Brown acpi_ut_subsystem_shutdown(); 8995b482a8SLen Brown 9095b482a8SLen Brown /* Free the mutex objects */ 9195b482a8SLen Brown 9295b482a8SLen Brown acpi_ut_mutex_terminate(); 9395b482a8SLen Brown 9495b482a8SLen Brown #ifdef ACPI_DEBUGGER 9595b482a8SLen Brown 9695b482a8SLen Brown /* Shut down the debugger */ 9795b482a8SLen Brown 9895b482a8SLen Brown acpi_db_terminate(); 9995b482a8SLen Brown #endif 10095b482a8SLen Brown 10195b482a8SLen Brown /* Now we can shutdown the OS-dependent layer */ 10295b482a8SLen Brown 10395b482a8SLen Brown status = acpi_os_terminate(); 10495b482a8SLen Brown return_ACPI_STATUS(status); 10595b482a8SLen Brown } 10695b482a8SLen Brown 10795b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_terminate) 1082f977b36SBob Moore 10995b482a8SLen Brown #ifndef ACPI_ASL_COMPILER 11095b482a8SLen Brown #ifdef ACPI_FUTURE_USAGE 11195b482a8SLen Brown /******************************************************************************* 11295b482a8SLen Brown * 11395b482a8SLen Brown * FUNCTION: acpi_subsystem_status 11495b482a8SLen Brown * 11595b482a8SLen Brown * PARAMETERS: None 11695b482a8SLen Brown * 11795b482a8SLen Brown * RETURN: Status of the ACPI subsystem 11895b482a8SLen Brown * 11995b482a8SLen Brown * DESCRIPTION: Other drivers that use the ACPI subsystem should call this 12095b482a8SLen Brown * before making any other calls, to ensure the subsystem 12195b482a8SLen Brown * initialized successfully. 12295b482a8SLen Brown * 12395b482a8SLen Brown ******************************************************************************/ 12495b482a8SLen Brown acpi_status acpi_subsystem_status(void) 12595b482a8SLen Brown { 12695b482a8SLen Brown 12795b482a8SLen Brown if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) { 12895b482a8SLen Brown return (AE_OK); 12995b482a8SLen Brown } else { 13095b482a8SLen Brown return (AE_ERROR); 13195b482a8SLen Brown } 13295b482a8SLen Brown } 13395b482a8SLen Brown 13495b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_subsystem_status) 13595b482a8SLen Brown 13695b482a8SLen Brown /******************************************************************************* 13795b482a8SLen Brown * 13895b482a8SLen Brown * FUNCTION: acpi_get_system_info 13995b482a8SLen Brown * 14095b482a8SLen Brown * PARAMETERS: out_buffer - A buffer to receive the resources for the 14195b482a8SLen Brown * device 14295b482a8SLen Brown * 143ba494beeSBob Moore * RETURN: status - the status of the call 14495b482a8SLen Brown * 14595b482a8SLen Brown * DESCRIPTION: This function is called to get information about the current 14695b482a8SLen Brown * state of the ACPI subsystem. It will return system information 14795b482a8SLen Brown * in the out_buffer. 14895b482a8SLen Brown * 14995b482a8SLen Brown * If the function fails an appropriate status will be returned 15095b482a8SLen Brown * and the value of out_buffer is undefined. 15195b482a8SLen Brown * 15295b482a8SLen Brown ******************************************************************************/ 15395b482a8SLen Brown acpi_status acpi_get_system_info(struct acpi_buffer * out_buffer) 15495b482a8SLen Brown { 15595b482a8SLen Brown struct acpi_system_info *info_ptr; 15695b482a8SLen Brown acpi_status status; 15795b482a8SLen Brown 15895b482a8SLen Brown ACPI_FUNCTION_TRACE(acpi_get_system_info); 15995b482a8SLen Brown 16095b482a8SLen Brown /* Parameter validation */ 16195b482a8SLen Brown 16295b482a8SLen Brown status = acpi_ut_validate_buffer(out_buffer); 16395b482a8SLen Brown if (ACPI_FAILURE(status)) { 16495b482a8SLen Brown return_ACPI_STATUS(status); 16595b482a8SLen Brown } 16695b482a8SLen Brown 16795b482a8SLen Brown /* Validate/Allocate/Clear caller buffer */ 16895b482a8SLen Brown 16995b482a8SLen Brown status = 17095b482a8SLen Brown acpi_ut_initialize_buffer(out_buffer, 17195b482a8SLen Brown sizeof(struct acpi_system_info)); 17295b482a8SLen Brown if (ACPI_FAILURE(status)) { 17395b482a8SLen Brown return_ACPI_STATUS(status); 17495b482a8SLen Brown } 17595b482a8SLen Brown 17695b482a8SLen Brown /* 17795b482a8SLen Brown * Populate the return buffer 17895b482a8SLen Brown */ 17995b482a8SLen Brown info_ptr = (struct acpi_system_info *)out_buffer->pointer; 18095b482a8SLen Brown 18195b482a8SLen Brown info_ptr->acpi_ca_version = ACPI_CA_VERSION; 18295b482a8SLen Brown 18395b482a8SLen Brown /* System flags (ACPI capabilities) */ 18495b482a8SLen Brown 18595b482a8SLen Brown info_ptr->flags = ACPI_SYS_MODE_ACPI; 18695b482a8SLen Brown 18795b482a8SLen Brown /* Timer resolution - 24 or 32 bits */ 18895b482a8SLen Brown 18995b482a8SLen Brown if (acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER) { 19095b482a8SLen Brown info_ptr->timer_resolution = 24; 19195b482a8SLen Brown } else { 19295b482a8SLen Brown info_ptr->timer_resolution = 32; 19395b482a8SLen Brown } 19495b482a8SLen Brown 19595b482a8SLen Brown /* Clear the reserved fields */ 19695b482a8SLen Brown 19795b482a8SLen Brown info_ptr->reserved1 = 0; 19895b482a8SLen Brown info_ptr->reserved2 = 0; 19995b482a8SLen Brown 20095b482a8SLen Brown /* Current debug levels */ 20195b482a8SLen Brown 20295b482a8SLen Brown info_ptr->debug_layer = acpi_dbg_layer; 20395b482a8SLen Brown info_ptr->debug_level = acpi_dbg_level; 20495b482a8SLen Brown 20595b482a8SLen Brown return_ACPI_STATUS(AE_OK); 20695b482a8SLen Brown } 20795b482a8SLen Brown 20895b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_get_system_info) 20995b482a8SLen Brown 21095b482a8SLen Brown /***************************************************************************** 21195b482a8SLen Brown * 21295b482a8SLen Brown * FUNCTION: acpi_install_initialization_handler 21395b482a8SLen Brown * 214ba494beeSBob Moore * PARAMETERS: handler - Callback procedure 215ba494beeSBob Moore * function - Not (currently) used, see below 21695b482a8SLen Brown * 21795b482a8SLen Brown * RETURN: Status 21895b482a8SLen Brown * 21995b482a8SLen Brown * DESCRIPTION: Install an initialization handler 22095b482a8SLen Brown * 22195b482a8SLen Brown * TBD: When a second function is added, must save the Function also. 22295b482a8SLen Brown * 22395b482a8SLen Brown ****************************************************************************/ 22495b482a8SLen Brown acpi_status 22595b482a8SLen Brown acpi_install_initialization_handler(acpi_init_handler handler, u32 function) 22695b482a8SLen Brown { 22795b482a8SLen Brown 22895b482a8SLen Brown if (!handler) { 22995b482a8SLen Brown return (AE_BAD_PARAMETER); 23095b482a8SLen Brown } 23195b482a8SLen Brown 23295b482a8SLen Brown if (acpi_gbl_init_handler) { 23395b482a8SLen Brown return (AE_ALREADY_EXISTS); 23495b482a8SLen Brown } 23595b482a8SLen Brown 23695b482a8SLen Brown acpi_gbl_init_handler = handler; 23768aafc35SBob Moore return (AE_OK); 23895b482a8SLen Brown } 23995b482a8SLen Brown 24095b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler) 24195b482a8SLen Brown #endif /* ACPI_FUTURE_USAGE */ 242b0ed7a91SLin Ming 24395b482a8SLen Brown /***************************************************************************** 24495b482a8SLen Brown * 24595b482a8SLen Brown * FUNCTION: acpi_purge_cached_objects 24695b482a8SLen Brown * 24795b482a8SLen Brown * PARAMETERS: None 24895b482a8SLen Brown * 24995b482a8SLen Brown * RETURN: Status 25095b482a8SLen Brown * 25195b482a8SLen Brown * DESCRIPTION: Empty all caches (delete the cached objects) 25295b482a8SLen Brown * 25395b482a8SLen Brown ****************************************************************************/ 25495b482a8SLen Brown acpi_status acpi_purge_cached_objects(void) 25595b482a8SLen Brown { 25695b482a8SLen Brown ACPI_FUNCTION_TRACE(acpi_purge_cached_objects); 25795b482a8SLen Brown 25895b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_state_cache); 25995b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_operand_cache); 26095b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_ps_node_cache); 26195b482a8SLen Brown (void)acpi_os_purge_cache(acpi_gbl_ps_node_ext_cache); 26268aafc35SBob Moore 26395b482a8SLen Brown return_ACPI_STATUS(AE_OK); 26495b482a8SLen Brown } 26595b482a8SLen Brown 26695b482a8SLen Brown ACPI_EXPORT_SYMBOL(acpi_purge_cached_objects) 267b0ed7a91SLin Ming 268b0ed7a91SLin Ming /***************************************************************************** 269b0ed7a91SLin Ming * 270b0ed7a91SLin Ming * FUNCTION: acpi_install_interface 271b0ed7a91SLin Ming * 272b0ed7a91SLin Ming * PARAMETERS: interface_name - The interface to install 273b0ed7a91SLin Ming * 274b0ed7a91SLin Ming * RETURN: Status 275b0ed7a91SLin Ming * 276b0ed7a91SLin Ming * DESCRIPTION: Install an _OSI interface to the global list 277b0ed7a91SLin Ming * 278b0ed7a91SLin Ming ****************************************************************************/ 279b0ed7a91SLin Ming acpi_status acpi_install_interface(acpi_string interface_name) 280b0ed7a91SLin Ming { 281b0ed7a91SLin Ming acpi_status status; 282b0ed7a91SLin Ming struct acpi_interface_info *interface_info; 283b0ed7a91SLin Ming 284b0ed7a91SLin Ming /* Parameter validation */ 285b0ed7a91SLin Ming 286b0ed7a91SLin Ming if (!interface_name || (ACPI_STRLEN(interface_name) == 0)) { 287b0ed7a91SLin Ming return (AE_BAD_PARAMETER); 288b0ed7a91SLin Ming } 289b0ed7a91SLin Ming 290b0ed7a91SLin Ming (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 291b0ed7a91SLin Ming 292b0ed7a91SLin Ming /* Check if the interface name is already in the global list */ 293b0ed7a91SLin Ming 294b0ed7a91SLin Ming interface_info = acpi_ut_get_interface(interface_name); 295b0ed7a91SLin Ming if (interface_info) { 296b0ed7a91SLin Ming /* 297b0ed7a91SLin Ming * The interface already exists in the list. This is OK if the 298b0ed7a91SLin Ming * interface has been marked invalid -- just clear the bit. 299b0ed7a91SLin Ming */ 300b0ed7a91SLin Ming if (interface_info->flags & ACPI_OSI_INVALID) { 301b0ed7a91SLin Ming interface_info->flags &= ~ACPI_OSI_INVALID; 302b0ed7a91SLin Ming status = AE_OK; 303b0ed7a91SLin Ming } else { 304b0ed7a91SLin Ming status = AE_ALREADY_EXISTS; 305b0ed7a91SLin Ming } 306b0ed7a91SLin Ming } else { 307b0ed7a91SLin Ming /* New interface name, install into the global list */ 308b0ed7a91SLin Ming 309b0ed7a91SLin Ming status = acpi_ut_install_interface(interface_name); 310b0ed7a91SLin Ming } 311b0ed7a91SLin Ming 312b0ed7a91SLin Ming acpi_os_release_mutex(acpi_gbl_osi_mutex); 313b0ed7a91SLin Ming return (status); 314b0ed7a91SLin Ming } 315b0ed7a91SLin Ming 316b0ed7a91SLin Ming ACPI_EXPORT_SYMBOL(acpi_install_interface) 317b0ed7a91SLin Ming 318b0ed7a91SLin Ming /***************************************************************************** 319b0ed7a91SLin Ming * 320b0ed7a91SLin Ming * FUNCTION: acpi_remove_interface 321b0ed7a91SLin Ming * 322b0ed7a91SLin Ming * PARAMETERS: interface_name - The interface to remove 323b0ed7a91SLin Ming * 324b0ed7a91SLin Ming * RETURN: Status 325b0ed7a91SLin Ming * 326b0ed7a91SLin Ming * DESCRIPTION: Remove an _OSI interface from the global list 327b0ed7a91SLin Ming * 328b0ed7a91SLin Ming ****************************************************************************/ 329b0ed7a91SLin Ming acpi_status acpi_remove_interface(acpi_string interface_name) 330b0ed7a91SLin Ming { 331b0ed7a91SLin Ming acpi_status status; 332b0ed7a91SLin Ming 333b0ed7a91SLin Ming /* Parameter validation */ 334b0ed7a91SLin Ming 335b0ed7a91SLin Ming if (!interface_name || (ACPI_STRLEN(interface_name) == 0)) { 336b0ed7a91SLin Ming return (AE_BAD_PARAMETER); 337b0ed7a91SLin Ming } 338b0ed7a91SLin Ming 339b0ed7a91SLin Ming (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 340b0ed7a91SLin Ming 341b0ed7a91SLin Ming status = acpi_ut_remove_interface(interface_name); 342b0ed7a91SLin Ming 343b0ed7a91SLin Ming acpi_os_release_mutex(acpi_gbl_osi_mutex); 344b0ed7a91SLin Ming return (status); 345b0ed7a91SLin Ming } 346b0ed7a91SLin Ming 347b0ed7a91SLin Ming ACPI_EXPORT_SYMBOL(acpi_remove_interface) 348b0ed7a91SLin Ming 349b0ed7a91SLin Ming /***************************************************************************** 350b0ed7a91SLin Ming * 351b0ed7a91SLin Ming * FUNCTION: acpi_install_interface_handler 352b0ed7a91SLin Ming * 353ba494beeSBob Moore * PARAMETERS: handler - The _OSI interface handler to install 354b0ed7a91SLin Ming * NULL means "remove existing handler" 355b0ed7a91SLin Ming * 356b0ed7a91SLin Ming * RETURN: Status 357b0ed7a91SLin Ming * 358b0ed7a91SLin Ming * DESCRIPTION: Install a handler for the predefined _OSI ACPI method. 359b0ed7a91SLin Ming * invoked during execution of the internal implementation of 360b0ed7a91SLin Ming * _OSI. A NULL handler simply removes any existing handler. 361b0ed7a91SLin Ming * 362b0ed7a91SLin Ming ****************************************************************************/ 363b0ed7a91SLin Ming acpi_status acpi_install_interface_handler(acpi_interface_handler handler) 364b0ed7a91SLin Ming { 365b0ed7a91SLin Ming acpi_status status = AE_OK; 366b0ed7a91SLin Ming 367b0ed7a91SLin Ming (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); 368b0ed7a91SLin Ming 369b0ed7a91SLin Ming if (handler && acpi_gbl_interface_handler) { 370b0ed7a91SLin Ming status = AE_ALREADY_EXISTS; 371b0ed7a91SLin Ming } else { 372b0ed7a91SLin Ming acpi_gbl_interface_handler = handler; 373b0ed7a91SLin Ming } 374b0ed7a91SLin Ming 375b0ed7a91SLin Ming acpi_os_release_mutex(acpi_gbl_osi_mutex); 376b0ed7a91SLin Ming return (status); 377b0ed7a91SLin Ming } 378b0ed7a91SLin Ming 379b0ed7a91SLin Ming ACPI_EXPORT_SYMBOL(acpi_install_interface_handler) 380f654c0feSLin Ming 381f654c0feSLin Ming /***************************************************************************** 382f654c0feSLin Ming * 383f654c0feSLin Ming * FUNCTION: acpi_check_address_range 384f654c0feSLin Ming * 385f654c0feSLin Ming * PARAMETERS: space_id - Address space ID 386ba494beeSBob Moore * address - Start address 387ba494beeSBob Moore * length - Length 388ba494beeSBob Moore * warn - TRUE if warning on overlap desired 389f654c0feSLin Ming * 390f654c0feSLin Ming * RETURN: Count of the number of conflicts detected. 391f654c0feSLin Ming * 392f654c0feSLin Ming * DESCRIPTION: Check if the input address range overlaps any of the 393f654c0feSLin Ming * ASL operation region address ranges. 394f654c0feSLin Ming * 395f654c0feSLin Ming ****************************************************************************/ 396f654c0feSLin Ming u32 397f654c0feSLin Ming acpi_check_address_range(acpi_adr_space_type space_id, 398f654c0feSLin Ming acpi_physical_address address, 399f654c0feSLin Ming acpi_size length, u8 warn) 400f654c0feSLin Ming { 401f654c0feSLin Ming u32 overlaps; 402f654c0feSLin Ming acpi_status status; 403f654c0feSLin Ming 404f654c0feSLin Ming status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); 405f654c0feSLin Ming if (ACPI_FAILURE(status)) { 406f654c0feSLin Ming return (0); 407f654c0feSLin Ming } 408f654c0feSLin Ming 409f654c0feSLin Ming overlaps = acpi_ut_check_address_range(space_id, address, 410f654c0feSLin Ming (u32)length, warn); 411f654c0feSLin Ming 412f654c0feSLin Ming (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); 413f654c0feSLin Ming return (overlaps); 414f654c0feSLin Ming } 415f654c0feSLin Ming 416f654c0feSLin Ming ACPI_EXPORT_SYMBOL(acpi_check_address_range) 417b0ed7a91SLin Ming #endif /* !ACPI_ASL_COMPILER */ 418be030a57SBob Moore /******************************************************************************* 419be030a57SBob Moore * 420be030a57SBob Moore * FUNCTION: acpi_decode_pld_buffer 421be030a57SBob Moore * 422be030a57SBob Moore * PARAMETERS: in_buffer - Buffer returned by _PLD method 423be030a57SBob Moore * length - Length of the in_buffer 424be030a57SBob Moore * return_buffer - Where the decode buffer is returned 425be030a57SBob Moore * 426be030a57SBob Moore * RETURN: Status and the decoded _PLD buffer. User must deallocate 427be030a57SBob Moore * the buffer via ACPI_FREE. 428be030a57SBob Moore * 429be030a57SBob Moore * DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into 430be030a57SBob Moore * a local struct that is much more useful to an ACPI driver. 431be030a57SBob Moore * 432be030a57SBob Moore ******************************************************************************/ 433be030a57SBob Moore acpi_status 434be030a57SBob Moore acpi_decode_pld_buffer(u8 *in_buffer, 435be030a57SBob Moore acpi_size length, struct acpi_pld_info ** return_buffer) 436be030a57SBob Moore { 437be030a57SBob Moore struct acpi_pld_info *pld_info; 438be030a57SBob Moore u32 *buffer = ACPI_CAST_PTR(u32, in_buffer); 439be030a57SBob Moore u32 dword; 440be030a57SBob Moore 441be030a57SBob Moore /* Parameter validation */ 442be030a57SBob Moore 443be030a57SBob Moore if (!in_buffer || !return_buffer || (length < 16)) { 444be030a57SBob Moore return (AE_BAD_PARAMETER); 445be030a57SBob Moore } 446be030a57SBob Moore 447be030a57SBob Moore pld_info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pld_info)); 448be030a57SBob Moore if (!pld_info) { 449be030a57SBob Moore return (AE_NO_MEMORY); 450be030a57SBob Moore } 451be030a57SBob Moore 452be030a57SBob Moore /* First 32-bit DWord */ 453be030a57SBob Moore 454be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[0]); 455be030a57SBob Moore pld_info->revision = ACPI_PLD_GET_REVISION(&dword); 456be030a57SBob Moore pld_info->ignore_color = ACPI_PLD_GET_IGNORE_COLOR(&dword); 457be030a57SBob Moore pld_info->color = ACPI_PLD_GET_COLOR(&dword); 458be030a57SBob Moore 459be030a57SBob Moore /* Second 32-bit DWord */ 460be030a57SBob Moore 461be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[1]); 462be030a57SBob Moore pld_info->width = ACPI_PLD_GET_WIDTH(&dword); 463be030a57SBob Moore pld_info->height = ACPI_PLD_GET_HEIGHT(&dword); 464be030a57SBob Moore 465be030a57SBob Moore /* Third 32-bit DWord */ 466be030a57SBob Moore 467be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[2]); 468be030a57SBob Moore pld_info->user_visible = ACPI_PLD_GET_USER_VISIBLE(&dword); 469be030a57SBob Moore pld_info->dock = ACPI_PLD_GET_DOCK(&dword); 470be030a57SBob Moore pld_info->lid = ACPI_PLD_GET_LID(&dword); 471be030a57SBob Moore pld_info->panel = ACPI_PLD_GET_PANEL(&dword); 472be030a57SBob Moore pld_info->vertical_position = ACPI_PLD_GET_VERTICAL(&dword); 473be030a57SBob Moore pld_info->horizontal_position = ACPI_PLD_GET_HORIZONTAL(&dword); 474be030a57SBob Moore pld_info->shape = ACPI_PLD_GET_SHAPE(&dword); 475be030a57SBob Moore pld_info->group_orientation = ACPI_PLD_GET_ORIENTATION(&dword); 476be030a57SBob Moore pld_info->group_token = ACPI_PLD_GET_TOKEN(&dword); 477be030a57SBob Moore pld_info->group_position = ACPI_PLD_GET_POSITION(&dword); 478be030a57SBob Moore pld_info->bay = ACPI_PLD_GET_BAY(&dword); 479be030a57SBob Moore 480be030a57SBob Moore /* Fourth 32-bit DWord */ 481be030a57SBob Moore 482be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[3]); 483be030a57SBob Moore pld_info->ejectable = ACPI_PLD_GET_EJECTABLE(&dword); 484be030a57SBob Moore pld_info->ospm_eject_required = ACPI_PLD_GET_OSPM_EJECT(&dword); 485be030a57SBob Moore pld_info->cabinet_number = ACPI_PLD_GET_CABINET(&dword); 486be030a57SBob Moore pld_info->card_cage_number = ACPI_PLD_GET_CARD_CAGE(&dword); 487be030a57SBob Moore pld_info->reference = ACPI_PLD_GET_REFERENCE(&dword); 488be030a57SBob Moore pld_info->rotation = ACPI_PLD_GET_ROTATION(&dword); 489be030a57SBob Moore pld_info->order = ACPI_PLD_GET_ORDER(&dword); 490be030a57SBob Moore 491be030a57SBob Moore if (length >= ACPI_PLD_BUFFER_SIZE) { 492be030a57SBob Moore 493be030a57SBob Moore /* Fifth 32-bit DWord (Revision 2 of _PLD) */ 494be030a57SBob Moore 495be030a57SBob Moore ACPI_MOVE_32_TO_32(&dword, &buffer[4]); 496be030a57SBob Moore pld_info->vertical_offset = ACPI_PLD_GET_VERT_OFFSET(&dword); 497be030a57SBob Moore pld_info->horizontal_offset = ACPI_PLD_GET_HORIZ_OFFSET(&dword); 498be030a57SBob Moore } 499be030a57SBob Moore 500be030a57SBob Moore *return_buffer = pld_info; 501be030a57SBob Moore return (AE_OK); 502be030a57SBob Moore } 503be030a57SBob Moore 504be030a57SBob Moore ACPI_EXPORT_SYMBOL(acpi_decode_pld_buffer) 505