/****************************************************************************** * * Module Name: tbinstal - ACPI table installation and removal * *****************************************************************************/ /* * Copyright (C) 2000 - 2014, 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. */ #include #include "accommon.h" #include "acnamesp.h" #include "actables.h" #define _COMPONENT ACPI_TABLES ACPI_MODULE_NAME("tbinstal") /* Local prototypes */ static acpi_status acpi_tb_acquire_temporal_table(struct acpi_table_desc *table_desc, acpi_physical_address address, u8 flags); static void acpi_tb_release_temporal_table(struct acpi_table_desc *table_desc); static acpi_status acpi_tb_acquire_root_table_entry(u32 *table_index); static u8 acpi_tb_is_equivalent_table(struct acpi_table_desc *table_desc, u32 table_index); /******************************************************************************* * * FUNCTION: acpi_tb_acquire_table * * PARAMETERS: table_desc - Table descriptor * table_ptr - Where table is returned * table_length - Where table length is returned * table_flags - Where table allocation flags are returned * * RETURN: Status * * DESCRIPTION: Acquire a table. It can be used for tables not maintained in * acpi_gbl_root_table_list. * ******************************************************************************/ acpi_status acpi_tb_acquire_table(struct acpi_table_desc *table_desc, struct acpi_table_header **table_ptr, u32 *table_length, u8 *table_flags) { struct acpi_table_header *table = NULL; switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) { case ACPI_TABLE_ORIGIN_INTERN_PHYSICAL: table = acpi_os_map_memory(table_desc->address, table_desc->length); break; case ACPI_TABLE_ORIGIN_INTERN_VIRTUAL: case ACPI_TABLE_ORIGIN_EXTERN_VIRTUAL: table = ACPI_CAST_PTR(struct acpi_table_header, table_desc->address); break; default: break; } /* Table is not valid yet */ if (!table) { return (AE_NO_MEMORY); } /* Fill the return values */ *table_ptr = table; *table_length = table_desc->length; *table_flags = table_desc->flags; return (AE_OK); } /******************************************************************************* * * FUNCTION: acpi_tb_release_table * * PARAMETERS: table - Pointer for the table * table_length - Length for the table * table_flags - Allocation flags for the table * * RETURN: None * * DESCRIPTION: Release a table. The reversal of acpi_tb_acquire_table(). * ******************************************************************************/ void acpi_tb_release_table(struct acpi_table_header *table, u32 table_length, u8 table_flags) { switch (table_flags & ACPI_TABLE_ORIGIN_MASK) { case ACPI_TABLE_ORIGIN_INTERN_PHYSICAL: acpi_os_unmap_memory(table, table_length); break; case ACPI_TABLE_ORIGIN_INTERN_VIRTUAL: case ACPI_TABLE_ORIGIN_EXTERN_VIRTUAL: default: break; } } /****************************************************************************** * * FUNCTION: acpi_tb_validate_table * * PARAMETERS: table_desc - Table descriptor * * RETURN: Status * * DESCRIPTION: This function is called to validate the table, the returned * table descriptor is in "VALIDATED" state. * *****************************************************************************/ acpi_status acpi_tb_validate_table(struct acpi_table_desc *table_desc) { acpi_status status = AE_OK; ACPI_FUNCTION_TRACE(tb_validate_table); /* Validate the table if necessary */ if (!table_desc->pointer) { status = acpi_tb_acquire_table(table_desc, &table_desc->pointer, &table_desc->length, &table_desc->flags); if (!table_desc->pointer) { status = AE_NO_MEMORY; } } return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_tb_invalidate_table * * PARAMETERS: table_desc - Table descriptor * * RETURN: None * * DESCRIPTION: Invalidate one internal ACPI table, this is reversal of * acpi_tb_validate_table(). * ******************************************************************************/ void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc) { ACPI_FUNCTION_TRACE(tb_invalidate_table); /* Table must be validated */ if (!table_desc->pointer) { return_VOID; } acpi_tb_release_table(table_desc->pointer, table_desc->length, table_desc->flags); table_desc->pointer = NULL; return_VOID; } /****************************************************************************** * * FUNCTION: acpi_tb_verify_table * * PARAMETERS: table_desc - Table descriptor * signature - Table signature to verify * * RETURN: Status * * DESCRIPTION: This function is called to validate and verify the table, the * returned table descriptor is in "VALIDATED" state. * *****************************************************************************/ acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc, char *signature) { acpi_status status = AE_OK; ACPI_FUNCTION_TRACE(tb_verify_table); /* Validate the table */ status = acpi_tb_validate_table(table_desc); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(AE_NO_MEMORY); } /* If a particular signature is expected (DSDT/FACS), it must match */ if (signature && !ACPI_COMPARE_NAME(&table_desc->signature, signature)) { ACPI_BIOS_ERROR((AE_INFO, "Invalid signature 0x%X for ACPI table, expected [%s]", table_desc->signature.integer, signature)); status = AE_BAD_SIGNATURE; goto invalidate_and_exit; } /* Verify the checksum */ status = acpi_tb_verify_checksum(table_desc->pointer, table_desc->length); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, "%4.4s " ACPI_PRINTF_UINT " Attempted table install failed", acpi_ut_valid_acpi_name(table_desc->signature. ascii) ? table_desc-> signature.ascii : "????", ACPI_FORMAT_TO_UINT(table_desc->address))); goto invalidate_and_exit; } return_ACPI_STATUS(AE_OK); invalidate_and_exit: acpi_tb_invalidate_table(table_desc); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_tb_install_table * * PARAMETERS: table_desc - Table descriptor * address - Physical address of the table * flags - Allocation flags of the table * table - Pointer to the table * * RETURN: None * * DESCRIPTION: Install an ACPI table into the global data structure. * ******************************************************************************/ void acpi_tb_install_table(struct acpi_table_desc *table_desc, acpi_physical_address address, u8 flags, struct acpi_table_header *table) { /* * Initialize the table entry. Set the pointer to NULL, since the * table is not fully mapped at this time. */ ACPI_MEMSET(table_desc, 0, sizeof(struct acpi_table_desc)); table_desc->address = address; table_desc->length = table->length; table_desc->flags = flags; ACPI_MOVE_32_TO_32(table_desc->signature.ascii, table->signature); } /******************************************************************************* * * FUNCTION: acpi_tb_acquire_temporal_table * * PARAMETERS: table_desc - Table descriptor to be acquired * address - Address of the table * flags - Allocation flags of the table * * RETURN: Status * * DESCRIPTION: This function validates the table header to obtain the length * of a table and fills the table descriptor to make its state as * "INSTALLED". Such table descriptor is only used for verified * installation. * ******************************************************************************/ static acpi_status acpi_tb_acquire_temporal_table(struct acpi_table_desc *table_desc, acpi_physical_address address, u8 flags) { struct acpi_table_header *table_header; switch (flags & ACPI_TABLE_ORIGIN_MASK) { case ACPI_TABLE_ORIGIN_INTERN_PHYSICAL: /* Try to obtain the length of the table */ table_header = acpi_os_map_memory(address, sizeof(struct acpi_table_header)); if (!table_header) { return (AE_NO_MEMORY); } acpi_tb_install_table(table_desc, address, flags, table_header); acpi_os_unmap_memory(table_header, sizeof(struct acpi_table_header)); return (AE_OK); case ACPI_TABLE_ORIGIN_INTERN_VIRTUAL: case ACPI_TABLE_ORIGIN_EXTERN_VIRTUAL: table_header = ACPI_CAST_PTR(struct acpi_table_header, address); if (!table_header) { return (AE_NO_MEMORY); } acpi_tb_install_table(table_desc, address, flags, table_header); return (AE_OK); default: break; } /* Table is not valid yet */ return (AE_NO_MEMORY); } /******************************************************************************* * * FUNCTION: acpi_tb_release_temporal_table * * PARAMETERS: table_desc - Table descriptor to be released * * RETURN: Status * * DESCRIPTION: The reversal of acpi_tb_acquire_temporal_table(). * ******************************************************************************/ static void acpi_tb_release_temporal_table(struct acpi_table_desc *table_desc) { /* * Note that the .Address is maintained by the callers of * acpi_tb_acquire_temporal_table(), thus do not invoke acpi_tb_uninstall_table() * where .Address will be freed. */ acpi_tb_invalidate_table(table_desc); } /******************************************************************************* * * FUNCTION: acpi_tb_install_and_override_table * * PARAMETERS: table_index - Index into root table array * new_table_desc - New table descriptor to install * * RETURN: None * * DESCRIPTION: Install an ACPI table into the global data structure. The * table override mechanism is called to allow the host * OS to replace any table before it is installed in the root * table array. * ******************************************************************************/ void acpi_tb_install_and_override_table(u32 table_index, struct acpi_table_desc *new_table_desc) { if (table_index >= acpi_gbl_root_table_list.current_table_count) { return; } /* * ACPI Table Override: * * Before we install the table, let the host OS override it with a new * one if desired. Any table within the RSDT/XSDT can be replaced, * including the DSDT which is pointed to by the FADT. */ acpi_tb_override_table(new_table_desc); acpi_tb_install_table(&acpi_gbl_root_table_list.tables[table_index], new_table_desc->address, new_table_desc->flags, new_table_desc->pointer); acpi_tb_print_table_header(new_table_desc->address, new_table_desc->pointer); /* Set the global integer width (based upon revision of the DSDT) */ if (table_index == ACPI_TABLE_INDEX_DSDT) { acpi_ut_set_integer_width(new_table_desc->pointer->revision); } } /******************************************************************************* * * FUNCTION: acpi_tb_install_fixed_table * * PARAMETERS: address - Physical address of DSDT or FACS * signature - Table signature, NULL if no need to * match * table_index - Index into root table array * * RETURN: Status * * DESCRIPTION: Install a fixed ACPI table (DSDT/FACS) into the global data * structure. * ******************************************************************************/ acpi_status acpi_tb_install_fixed_table(acpi_physical_address address, char *signature, u32 table_index) { struct acpi_table_desc new_table_desc; acpi_status status; ACPI_FUNCTION_TRACE(tb_install_fixed_table); if (!address) { ACPI_ERROR((AE_INFO, "Null physical address for ACPI table [%s]", signature)); return (AE_NO_MEMORY); } /* Fill a table descriptor for validation */ status = acpi_tb_acquire_temporal_table(&new_table_desc, address, ACPI_TABLE_ORIGIN_INTERN_PHYSICAL); if (ACPI_FAILURE(status)) { ACPI_ERROR((AE_INFO, "Could not acquire table length at %p", ACPI_CAST_PTR(void, address))); return_ACPI_STATUS(status); } /* Validate and verify a table before installation */ status = acpi_tb_verify_table(&new_table_desc, signature); if (ACPI_FAILURE(status)) { goto release_and_exit; } acpi_tb_install_and_override_table(table_index, &new_table_desc); release_and_exit: /* Release the temporal table descriptor */ acpi_tb_release_temporal_table(&new_table_desc); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_tb_is_equivalent_table * * PARAMETERS: table_desc - Table 1 descriptor to be compared * table_index - Index of table 2 to be compared * * RETURN: TRUE if 2 tables are equivalent * * DESCRIPTION: This function is called to compare a table with what have * already been installed in the root table list. * ******************************************************************************/ static u8 acpi_tb_is_equivalent_table(struct acpi_table_desc *table_desc, u32 table_index) { acpi_status status = AE_OK; u8 is_equivalent; struct acpi_table_header *table; u32 table_length; u8 table_flags; status = acpi_tb_acquire_table(&acpi_gbl_root_table_list.tables[table_index], &table, &table_length, &table_flags); if (ACPI_FAILURE(status)) { return (FALSE); } /* * Check for a table match on the entire table length, * not just the header. */ is_equivalent = (u8)((table_desc->length != table_length || ACPI_MEMCMP(table_desc->pointer, table, table_length)) ? FALSE : TRUE); /* Release the acquired table */ acpi_tb_release_table(table, table_length, table_flags); return (is_equivalent); } /******************************************************************************* * * FUNCTION: acpi_tb_install_non_fixed_table * * PARAMETERS: address - Address of the table (might be a virtual * address depending on the table_flags) * flags - Flags for the table * reload - Whether reload should be performed * table_index - Where the table index is returned * * RETURN: Status * * DESCRIPTION: This function is called to install an ACPI table that is * neither DSDT nor FACS. * When this function is called by "Load" or "LoadTable" opcodes, * or by acpi_load_table() API, the "Reload" parameter is set. * After sucessfully returning from this function, table is * "INSTALLED" but not "VALIDATED". * ******************************************************************************/ acpi_status acpi_tb_install_non_fixed_table(acpi_physical_address address, u8 flags, u8 reload, u32 *table_index) { u32 i; acpi_status status = AE_OK; struct acpi_table_desc new_table_desc; ACPI_FUNCTION_TRACE(tb_install_non_fixed_table); /* Acquire a temporal table descriptor for validation */ status = acpi_tb_acquire_temporal_table(&new_table_desc, address, flags); if (ACPI_FAILURE(status)) { ACPI_ERROR((AE_INFO, "Could not acquire table length at %p", ACPI_CAST_PTR(void, address))); return_ACPI_STATUS(status); } /* Validate and verify a table before installation */ status = acpi_tb_verify_table(&new_table_desc, NULL); if (ACPI_FAILURE(status)) { goto release_and_exit; } if (reload) { /* * Validate the incoming table signature. * * 1) Originally, we checked the table signature for "SSDT" or "PSDT". * 2) We added support for OEMx tables, signature "OEM". * 3) Valid tables were encountered with a null signature, so we just * gave up on validating the signature, (05/2008). * 4) We encountered non-AML tables such as the MADT, which caused * interpreter errors and kernel faults. So now, we once again allow * only "SSDT", "OEMx", and now, also a null signature. (05/2011). */ if ((new_table_desc.signature.ascii[0] != 0x00) && (!ACPI_COMPARE_NAME (&new_table_desc.signature, ACPI_SIG_SSDT)) && (ACPI_STRNCMP(new_table_desc.signature.ascii, "OEM", 3))) { ACPI_BIOS_ERROR((AE_INFO, "Table has invalid signature [%4.4s] (0x%8.8X), " "must be SSDT or OEMx", acpi_ut_valid_acpi_name(new_table_desc. signature. ascii) ? new_table_desc.signature. ascii : "????", new_table_desc.signature.integer)); status = AE_BAD_SIGNATURE; goto release_and_exit; } /* Check if table is already registered */ for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) { /* * Check for a table match on the entire table length, * not just the header. */ if (!acpi_tb_is_equivalent_table(&new_table_desc, i)) { continue; } /* * Note: the current mechanism does not unregister a table if it is * dynamically unloaded. The related namespace entries are deleted, * but the table remains in the root table list. * * The assumption here is that the number of different tables that * will be loaded is actually small, and there is minimal overhead * in just keeping the table in case it is needed again. * * If this assumption changes in the future (perhaps on large * machines with many table load/unload operations), tables will * need to be unregistered when they are unloaded, and slots in the * root table list should be reused when empty. */ if (acpi_gbl_root_table_list.tables[i]. flags & ACPI_TABLE_IS_LOADED) { /* Table is still loaded, this is an error */ status = AE_ALREADY_EXISTS; goto release_and_exit; } else { /* * Table was unloaded, allow it to be reloaded. * As we are going to return AE_OK to the caller, we should * take the responsibility of freeing the input descriptor. * Refill the input descriptor to ensure * acpi_tb_install_and_override_table() can be called again to * indicate the re-installation. */ acpi_tb_uninstall_table(&new_table_desc); *table_index = i; (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); return_ACPI_STATUS(AE_OK); } } } /* Add the table to the global root table list */ status = acpi_tb_acquire_root_table_entry(&i); if (ACPI_FAILURE(status)) { goto release_and_exit; } *table_index = i; acpi_tb_install_and_override_table(i, &new_table_desc); release_and_exit: /* Release the temporal table descriptor */ acpi_tb_release_temporal_table(&new_table_desc); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_tb_override_table * * PARAMETERS: old_table_desc - Validated table descriptor to be * overridden * * RETURN: None * * DESCRIPTION: Attempt table override by calling the OSL override functions. * Note: If the table is overridden, then the entire new table * is acquired and returned by this function. * Before/after invocation, the table descriptor is in a state * that is "VALIDATED". * ******************************************************************************/ void acpi_tb_override_table(struct acpi_table_desc *old_table_desc) { acpi_status status; char *override_type; struct acpi_table_desc new_table_desc; struct acpi_table_header *table; acpi_physical_address address; u32 length; /* (1) Attempt logical override (returns a logical address) */ status = acpi_os_table_override(old_table_desc->pointer, &table); if (ACPI_SUCCESS(status) && table) { acpi_tb_acquire_temporal_table(&new_table_desc, ACPI_PTR_TO_PHYSADDR(table), ACPI_TABLE_ORIGIN_EXTERN_VIRTUAL); override_type = "Logical"; goto finish_override; } /* (2) Attempt physical override (returns a physical address) */ status = acpi_os_physical_table_override(old_table_desc->pointer, &address, &length); if (ACPI_SUCCESS(status) && address && length) { acpi_tb_acquire_temporal_table(&new_table_desc, address, ACPI_TABLE_ORIGIN_INTERN_PHYSICAL); override_type = "Physical"; goto finish_override; } return; /* There was no override */ finish_override: /* Validate and verify a table before overriding */ status = acpi_tb_verify_table(&new_table_desc, NULL); if (ACPI_FAILURE(status)) { return; } ACPI_INFO((AE_INFO, "%4.4s " ACPI_PRINTF_UINT " %s table override, new table: " ACPI_PRINTF_UINT, old_table_desc->signature.ascii, ACPI_FORMAT_TO_UINT(old_table_desc->address), override_type, ACPI_FORMAT_TO_UINT(new_table_desc.address))); /* We can now uninstall the original table */ acpi_tb_uninstall_table(old_table_desc); /* * Replace the original table descriptor and keep its state as * "VALIDATED". */ acpi_tb_install_table(old_table_desc, new_table_desc.address, new_table_desc.flags, new_table_desc.pointer); acpi_tb_validate_table(old_table_desc); /* Release the temporal table descriptor */ acpi_tb_release_temporal_table(&new_table_desc); } /******************************************************************************* * * FUNCTION: acpi_tb_resize_root_table_list * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Expand the size of global table array * ******************************************************************************/ acpi_status acpi_tb_resize_root_table_list(void) { struct acpi_table_desc *tables; u32 table_count; ACPI_FUNCTION_TRACE(tb_resize_root_table_list); /* allow_resize flag is a parameter to acpi_initialize_tables */ if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) { ACPI_ERROR((AE_INFO, "Resize of Root Table Array is not allowed")); return_ACPI_STATUS(AE_SUPPORT); } /* Increase the Table Array size */ if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { table_count = acpi_gbl_root_table_list.max_table_count; } else { table_count = acpi_gbl_root_table_list.current_table_count; } tables = ACPI_ALLOCATE_ZEROED(((acpi_size) table_count + ACPI_ROOT_TABLE_SIZE_INCREMENT) * sizeof(struct acpi_table_desc)); if (!tables) { ACPI_ERROR((AE_INFO, "Could not allocate new root table array")); return_ACPI_STATUS(AE_NO_MEMORY); } /* Copy and free the previous table array */ if (acpi_gbl_root_table_list.tables) { ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables, (acpi_size) table_count * sizeof(struct acpi_table_desc)); if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { ACPI_FREE(acpi_gbl_root_table_list.tables); } } acpi_gbl_root_table_list.tables = tables; acpi_gbl_root_table_list.max_table_count = table_count + ACPI_ROOT_TABLE_SIZE_INCREMENT; acpi_gbl_root_table_list.flags |= ACPI_ROOT_ORIGIN_ALLOCATED; return_ACPI_STATUS(AE_OK); } /******************************************************************************* * * FUNCTION: acpi_tb_acquire_root_table_entry * * PARAMETERS: table_index - Where table index is returned * * RETURN: Status and table index. * * DESCRIPTION: Allocate a new ACPI table entry to the global table list * ******************************************************************************/ static acpi_status acpi_tb_acquire_root_table_entry(u32 *table_index) { acpi_status status; /* Ensure that there is room for the table in the Root Table List */ if (acpi_gbl_root_table_list.current_table_count >= acpi_gbl_root_table_list.max_table_count) { status = acpi_tb_resize_root_table_list(); if (ACPI_FAILURE(status)) { return (status); } } *table_index = acpi_gbl_root_table_list.current_table_count; acpi_gbl_root_table_list.current_table_count++; return (AE_OK); } /******************************************************************************* * * FUNCTION: acpi_tb_store_table * * PARAMETERS: address - Table address * table - Table header * length - Table length * flags - flags * * RETURN: Status and table index. * * DESCRIPTION: Add an ACPI table to the global table list * ******************************************************************************/ acpi_status acpi_tb_store_table(acpi_physical_address address, struct acpi_table_header * table, u32 length, u8 flags, u32 *table_index) { acpi_status status; struct acpi_table_desc *table_desc; status = acpi_tb_acquire_root_table_entry(table_index); if (ACPI_FAILURE(status)) { return (status); } /* Initialize added table */ table_desc = &acpi_gbl_root_table_list.tables[*table_index]; acpi_tb_install_table(table_desc, address, flags, table); table_desc->pointer = table; return (AE_OK); } /******************************************************************************* * * FUNCTION: acpi_tb_uninstall_table * * PARAMETERS: table_desc - Table descriptor * * RETURN: None * * DESCRIPTION: Delete one internal ACPI table * ******************************************************************************/ void acpi_tb_uninstall_table(struct acpi_table_desc *table_desc) { ACPI_FUNCTION_TRACE(tb_uninstall_table); /* Table must be installed */ if (!table_desc->address) { return_VOID; } acpi_tb_invalidate_table(table_desc); if ((table_desc->flags & ACPI_TABLE_ORIGIN_MASK) == ACPI_TABLE_ORIGIN_INTERN_VIRTUAL) { ACPI_FREE(ACPI_CAST_PTR(void, table_desc->address)); } table_desc->address = ACPI_PTR_TO_PHYSADDR(NULL); return_VOID; } /******************************************************************************* * * FUNCTION: acpi_tb_terminate * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Delete all internal ACPI tables * ******************************************************************************/ void acpi_tb_terminate(void) { u32 i; ACPI_FUNCTION_TRACE(tb_terminate); (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); /* Delete the individual tables */ for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) { acpi_tb_uninstall_table(&acpi_gbl_root_table_list.tables[i]); } /* * Delete the root table array if allocated locally. Array cannot be * mapped, so we don't need to check for that flag. */ if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { ACPI_FREE(acpi_gbl_root_table_list.tables); } acpi_gbl_root_table_list.tables = NULL; acpi_gbl_root_table_list.flags = 0; acpi_gbl_root_table_list.current_table_count = 0; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n")); (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); return_VOID; } /******************************************************************************* * * FUNCTION: acpi_tb_delete_namespace_by_owner * * PARAMETERS: table_index - Table index * * RETURN: Status * * DESCRIPTION: Delete all namespace objects created when this table was loaded. * ******************************************************************************/ acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index) { acpi_owner_id owner_id; acpi_status status; ACPI_FUNCTION_TRACE(tb_delete_namespace_by_owner); status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } if (table_index >= acpi_gbl_root_table_list.current_table_count) { /* The table index does not exist */ (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); return_ACPI_STATUS(AE_NOT_EXIST); } /* Get the owner ID for this table, used to delete namespace nodes */ owner_id = acpi_gbl_root_table_list.tables[table_index].owner_id; (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); /* * Need to acquire the namespace writer lock to prevent interference * with any concurrent namespace walks. The interpreter must be * released during the deletion since the acquisition of the deletion * lock may block, and also since the execution of a namespace walk * must be allowed to use the interpreter. */ (void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER); status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock); acpi_ns_delete_namespace_by_owner(owner_id); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock); status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_tb_allocate_owner_id * * PARAMETERS: table_index - Table index * * RETURN: Status * * DESCRIPTION: Allocates owner_id in table_desc * ******************************************************************************/ acpi_status acpi_tb_allocate_owner_id(u32 table_index) { acpi_status status = AE_BAD_PARAMETER; ACPI_FUNCTION_TRACE(tb_allocate_owner_id); (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); if (table_index < acpi_gbl_root_table_list.current_table_count) { status = acpi_ut_allocate_owner_id (&(acpi_gbl_root_table_list.tables[table_index].owner_id)); } (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_tb_release_owner_id * * PARAMETERS: table_index - Table index * * RETURN: Status * * DESCRIPTION: Releases owner_id in table_desc * ******************************************************************************/ acpi_status acpi_tb_release_owner_id(u32 table_index) { acpi_status status = AE_BAD_PARAMETER; ACPI_FUNCTION_TRACE(tb_release_owner_id); (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); if (table_index < acpi_gbl_root_table_list.current_table_count) { acpi_ut_release_owner_id(& (acpi_gbl_root_table_list. tables[table_index].owner_id)); status = AE_OK; } (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_tb_get_owner_id * * PARAMETERS: table_index - Table index * owner_id - Where the table owner_id is returned * * RETURN: Status * * DESCRIPTION: returns owner_id for the ACPI table * ******************************************************************************/ acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id * owner_id) { acpi_status status = AE_BAD_PARAMETER; ACPI_FUNCTION_TRACE(tb_get_owner_id); (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); if (table_index < acpi_gbl_root_table_list.current_table_count) { *owner_id = acpi_gbl_root_table_list.tables[table_index].owner_id; status = AE_OK; } (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_tb_is_table_loaded * * PARAMETERS: table_index - Table index * * RETURN: Table Loaded Flag * ******************************************************************************/ u8 acpi_tb_is_table_loaded(u32 table_index) { u8 is_loaded = FALSE; (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); if (table_index < acpi_gbl_root_table_list.current_table_count) { is_loaded = (u8) (acpi_gbl_root_table_list.tables[table_index].flags & ACPI_TABLE_IS_LOADED); } (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); return (is_loaded); } /******************************************************************************* * * FUNCTION: acpi_tb_set_table_loaded_flag * * PARAMETERS: table_index - Table index * is_loaded - TRUE if table is loaded, FALSE otherwise * * RETURN: None * * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE. * ******************************************************************************/ void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded) { (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); if (table_index < acpi_gbl_root_table_list.current_table_count) { if (is_loaded) { acpi_gbl_root_table_list.tables[table_index].flags |= ACPI_TABLE_IS_LOADED; } else { acpi_gbl_root_table_list.tables[table_index].flags &= ~ACPI_TABLE_IS_LOADED; } } (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); }