diff options
Diffstat (limited to 'drivers/acpi/namespace/nsload.c')
| -rw-r--r-- | drivers/acpi/namespace/nsload.c | 264 |
1 files changed, 103 insertions, 161 deletions
diff --git a/drivers/acpi/namespace/nsload.c b/drivers/acpi/namespace/nsload.c index 34e49701660..c28849de465 100644 --- a/drivers/acpi/namespace/nsload.c +++ b/drivers/acpi/namespace/nsload.c @@ -41,32 +41,22 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> #include <acpi/acnamesp.h> #include <acpi/acdispat.h> - #define _COMPONENT ACPI_NAMESPACE - ACPI_MODULE_NAME ("nsload") +ACPI_MODULE_NAME("nsload") /* Local prototypes */ - -static acpi_status -acpi_ns_load_table_by_type ( - acpi_table_type table_type); +static acpi_status acpi_ns_load_table_by_type(acpi_table_type table_type); #ifdef ACPI_FUTURE_IMPLEMENTATION -acpi_status -acpi_ns_unload_namespace ( - acpi_handle handle); +acpi_status acpi_ns_unload_namespace(acpi_handle handle); -static acpi_status -acpi_ns_delete_subtree ( - acpi_handle start_handle); +static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle); #endif - #ifndef ACPI_NO_METHOD_EXECUTION /******************************************************************************* * @@ -82,40 +72,39 @@ acpi_ns_delete_subtree ( ******************************************************************************/ acpi_status -acpi_ns_load_table ( - struct acpi_table_desc *table_desc, - struct acpi_namespace_node *node) +acpi_ns_load_table(struct acpi_table_desc *table_desc, + struct acpi_namespace_node *node) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("ns_load_table"); + acpi_status status; + ACPI_FUNCTION_TRACE("ns_load_table"); /* Check if table contains valid AML (must be DSDT, PSDT, SSDT, etc.) */ - if (!(acpi_gbl_table_data[table_desc->type].flags & ACPI_TABLE_EXECUTABLE)) { + if (! + (acpi_gbl_table_data[table_desc->type]. + flags & ACPI_TABLE_EXECUTABLE)) { /* Just ignore this table */ - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } /* Check validity of the AML start and length */ if (!table_desc->aml_start) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null AML pointer\n")); - return_ACPI_STATUS (AE_BAD_PARAMETER); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Null AML pointer\n")); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AML block at %p\n", - table_desc->aml_start)); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AML block at %p\n", + table_desc->aml_start)); /* Ignore table if there is no AML contained within */ if (!table_desc->aml_length) { - ACPI_REPORT_WARNING (("Zero-length AML block in table [%4.4s]\n", - table_desc->pointer->signature)); - return_ACPI_STATUS (AE_OK); + ACPI_REPORT_WARNING(("Zero-length AML block in table [%4.4s]\n", + table_desc->pointer->signature)); + return_ACPI_STATUS(AE_OK); } /* @@ -127,19 +116,19 @@ acpi_ns_load_table ( * to another control method, we can't continue parsing * because we don't know how many arguments to parse next! */ - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "**** Loading table into namespace ****\n")); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "**** Loading table into namespace ****\n")); - status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - status = acpi_ns_parse_table (table_desc, node->child); - (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); + status = acpi_ns_parse_table(table_desc, node->child); + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* @@ -148,18 +137,17 @@ acpi_ns_load_table ( * just-in-time parsing, we delete the control method * parse trees. */ - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "**** Begin Table Method Parsing and Object Initialization ****\n")); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "**** Begin Table Method Parsing and Object Initialization ****\n")); - status = acpi_ds_initialize_objects (table_desc, node); + status = acpi_ds_initialize_objects(table_desc, node); - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "**** Completed Table Method Parsing and Object Initialization ****\n")); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "**** Completed Table Method Parsing and Object Initialization ****\n")); - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ns_load_table_by_type @@ -174,21 +162,17 @@ acpi_ns_load_table ( * ******************************************************************************/ -static acpi_status -acpi_ns_load_table_by_type ( - acpi_table_type table_type) +static acpi_status acpi_ns_load_table_by_type(acpi_table_type table_type) { - u32 i; - acpi_status status; - struct acpi_table_desc *table_desc; - + u32 i; + acpi_status status; + struct acpi_table_desc *table_desc; - ACPI_FUNCTION_TRACE ("ns_load_table_by_type"); + ACPI_FUNCTION_TRACE("ns_load_table_by_type"); - - status = acpi_ut_acquire_mutex (ACPI_MTX_TABLES); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* @@ -198,7 +182,7 @@ acpi_ns_load_table_by_type ( switch (table_type) { case ACPI_TABLE_DSDT: - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading DSDT\n")); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Namespace load: DSDT\n")); table_desc = acpi_gbl_table_lists[ACPI_TABLE_DSDT].next; @@ -210,57 +194,33 @@ acpi_ns_load_table_by_type ( /* Now load the single DSDT */ - status = acpi_ns_load_table (table_desc, acpi_gbl_root_node); - if (ACPI_SUCCESS (status)) { + status = acpi_ns_load_table(table_desc, acpi_gbl_root_node); + if (ACPI_SUCCESS(status)) { table_desc->loaded_into_namespace = TRUE; } break; - case ACPI_TABLE_SSDT: + case ACPI_TABLE_PSDT: - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading %d SSDTs\n", - acpi_gbl_table_lists[ACPI_TABLE_SSDT].count)); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Namespace load: %d SSDT or PSDTs\n", + acpi_gbl_table_lists[table_type].count)); /* - * Traverse list of SSDT tables + * Traverse list of SSDT or PSDT tables */ - table_desc = acpi_gbl_table_lists[ACPI_TABLE_SSDT].next; - for (i = 0; i < acpi_gbl_table_lists[ACPI_TABLE_SSDT].count; i++) { + table_desc = acpi_gbl_table_lists[table_type].next; + for (i = 0; i < acpi_gbl_table_lists[table_type].count; i++) { /* - * Only attempt to load table if it is not + * Only attempt to load table into namespace if it is not * already loaded! */ if (!table_desc->loaded_into_namespace) { - status = acpi_ns_load_table (table_desc, acpi_gbl_root_node); - if (ACPI_FAILURE (status)) { - break; - } - - table_desc->loaded_into_namespace = TRUE; - } - - table_desc = table_desc->next; - } - break; - - - case ACPI_TABLE_PSDT: - - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading %d PSDTs\n", - acpi_gbl_table_lists[ACPI_TABLE_PSDT].count)); - - /* - * Traverse list of PSDT tables - */ - table_desc = acpi_gbl_table_lists[ACPI_TABLE_PSDT].next; - - for (i = 0; i < acpi_gbl_table_lists[ACPI_TABLE_PSDT].count; i++) { - /* Only attempt to load table if it is not already loaded! */ - - if (!table_desc->loaded_into_namespace) { - status = acpi_ns_load_table (table_desc, acpi_gbl_root_node); - if (ACPI_FAILURE (status)) { + status = + acpi_ns_load_table(table_desc, + acpi_gbl_root_node); + if (ACPI_FAILURE(status)) { break; } @@ -271,19 +231,16 @@ acpi_ns_load_table_by_type ( } break; - default: status = AE_SUPPORT; break; } - -unlock_and_exit: - (void) acpi_ut_release_mutex (ACPI_MTX_TABLES); - return_ACPI_STATUS (status); + unlock_and_exit: + (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_load_namespace @@ -297,45 +254,40 @@ unlock_and_exit: * ******************************************************************************/ -acpi_status -acpi_ns_load_namespace ( - void) +acpi_status acpi_ns_load_namespace(void) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_load_name_space"); + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_load_name_space"); /* There must be at least a DSDT installed */ if (acpi_gbl_DSDT == NULL) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "DSDT is not in memory\n")); - return_ACPI_STATUS (AE_NO_ACPI_TABLES); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "DSDT is not in memory\n")); + return_ACPI_STATUS(AE_NO_ACPI_TABLES); } /* * Load the namespace. The DSDT is required, * but the SSDT and PSDT tables are optional. */ - status = acpi_ns_load_table_by_type (ACPI_TABLE_DSDT); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ns_load_table_by_type(ACPI_TABLE_DSDT); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Ignore exceptions from these */ - (void) acpi_ns_load_table_by_type (ACPI_TABLE_SSDT); - (void) acpi_ns_load_table_by_type (ACPI_TABLE_PSDT); + (void)acpi_ns_load_table_by_type(ACPI_TABLE_SSDT); + (void)acpi_ns_load_table_by_type(ACPI_TABLE_PSDT); - ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, - "ACPI Namespace successfully loaded at root %p\n", - acpi_gbl_root_node)); + ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, + "ACPI Namespace successfully loaded at root %p\n", + acpi_gbl_root_node)); - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - #ifdef ACPI_FUTURE_IMPLEMENTATION /******************************************************************************* * @@ -353,24 +305,20 @@ acpi_ns_load_namespace ( * ******************************************************************************/ -static acpi_status -acpi_ns_delete_subtree ( - acpi_handle start_handle) +static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle) { - acpi_status status; - acpi_handle child_handle; - acpi_handle parent_handle; - acpi_handle next_child_handle; - acpi_handle dummy; - u32 level; - - - ACPI_FUNCTION_TRACE ("ns_delete_subtree"); + acpi_status status; + acpi_handle child_handle; + acpi_handle parent_handle; + acpi_handle next_child_handle; + acpi_handle dummy; + u32 level; + ACPI_FUNCTION_TRACE("ns_delete_subtree"); parent_handle = start_handle; child_handle = NULL; - level = 1; + level = 1; /* * Traverse the tree of objects until we bubble back up @@ -379,18 +327,19 @@ acpi_ns_delete_subtree ( while (level > 0) { /* Attempt to get the next object in this scope */ - status = acpi_get_next_object (ACPI_TYPE_ANY, parent_handle, - child_handle, &next_child_handle); + status = acpi_get_next_object(ACPI_TYPE_ANY, parent_handle, + child_handle, &next_child_handle); child_handle = next_child_handle; /* Did we get a new object? */ - if (ACPI_SUCCESS (status)) { + if (ACPI_SUCCESS(status)) { /* Check if this object has any children */ - if (ACPI_SUCCESS (acpi_get_next_object (ACPI_TYPE_ANY, child_handle, - NULL, &dummy))) { + if (ACPI_SUCCESS + (acpi_get_next_object + (ACPI_TYPE_ANY, child_handle, NULL, &dummy))) { /* * There is at least one child of this object, * visit the object @@ -399,8 +348,7 @@ acpi_ns_delete_subtree ( parent_handle = child_handle; child_handle = NULL; } - } - else { + } else { /* * No more children in this object, go back up to * the object's parent @@ -409,24 +357,23 @@ acpi_ns_delete_subtree ( /* Delete all children now */ - acpi_ns_delete_children (child_handle); + acpi_ns_delete_children(child_handle); child_handle = parent_handle; - status = acpi_get_parent (parent_handle, &parent_handle); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_get_parent(parent_handle, &parent_handle); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } } } /* Now delete the starting object, and we are done */ - acpi_ns_delete_node (child_handle); + acpi_ns_delete_node(child_handle); - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } - /******************************************************************************* * * FUNCTION: acpi_ns_unload_name_space @@ -441,32 +388,27 @@ acpi_ns_delete_subtree ( * ******************************************************************************/ -acpi_status -acpi_ns_unload_namespace ( - acpi_handle handle) +acpi_status acpi_ns_unload_namespace(acpi_handle handle) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("ns_unload_name_space"); + acpi_status status; + ACPI_FUNCTION_TRACE("ns_unload_name_space"); /* Parameter validation */ if (!acpi_gbl_root_node) { - return_ACPI_STATUS (AE_NO_NAMESPACE); + return_ACPI_STATUS(AE_NO_NAMESPACE); } if (!handle) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* This function does the real work */ - status = acpi_ns_delete_subtree (handle); + status = acpi_ns_delete_subtree(handle); - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } #endif #endif - |