diff options
Diffstat (limited to 'drivers/acpi/executer/exconfig.c')
| -rw-r--r-- | drivers/acpi/executer/exconfig.c | 351 |
1 files changed, 178 insertions, 173 deletions
diff --git a/drivers/acpi/executer/exconfig.c b/drivers/acpi/executer/exconfig.c index 734b2f2..1ce365d 100644 --- a/drivers/acpi/executer/exconfig.c +++ b/drivers/acpi/executer/exconfig.c @@ -41,7 +41,6 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> #include <acpi/acinterp.h> #include <acpi/amlcode.h> @@ -50,18 +49,14 @@ #include <acpi/actables.h> #include <acpi/acdispat.h> - #define _COMPONENT ACPI_EXECUTER - ACPI_MODULE_NAME ("exconfig") +ACPI_MODULE_NAME("exconfig") /* Local prototypes */ - static acpi_status -acpi_ex_add_table ( - struct acpi_table_header *table, - struct acpi_namespace_node *parent_node, - union acpi_operand_object **ddb_handle); - +acpi_ex_add_table(struct acpi_table_header *table, + struct acpi_namespace_node *parent_node, + union acpi_operand_object **ddb_handle); /******************************************************************************* * @@ -79,64 +74,67 @@ acpi_ex_add_table ( ******************************************************************************/ static acpi_status -acpi_ex_add_table ( - struct acpi_table_header *table, - struct acpi_namespace_node *parent_node, - union acpi_operand_object **ddb_handle) +acpi_ex_add_table(struct acpi_table_header *table, + struct acpi_namespace_node *parent_node, + union acpi_operand_object **ddb_handle) { - acpi_status status; - struct acpi_table_desc table_info; - union acpi_operand_object *obj_desc; - - - ACPI_FUNCTION_TRACE ("ex_add_table"); + acpi_status status; + struct acpi_table_desc table_info; + union acpi_operand_object *obj_desc; + ACPI_FUNCTION_TRACE("ex_add_table"); /* Create an object to be the table handle */ - obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_LOCAL_REFERENCE); + obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE); if (!obj_desc) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } + /* Init the table handle */ + + obj_desc->reference.opcode = AML_LOAD_OP; + *ddb_handle = obj_desc; + /* Install the new table into the local data structures */ - ACPI_MEMSET (&table_info, 0, sizeof (struct acpi_table_desc)); + ACPI_MEMSET(&table_info, 0, sizeof(struct acpi_table_desc)); - table_info.type = ACPI_TABLE_SSDT; - table_info.pointer = table; - table_info.length = (acpi_size) table->length; + table_info.type = ACPI_TABLE_SSDT; + table_info.pointer = table; + table_info.length = (acpi_size) table->length; table_info.allocation = ACPI_MEM_ALLOCATED; - status = acpi_tb_install_table (&table_info); - if (ACPI_FAILURE (status)) { + status = acpi_tb_install_table(&table_info); + obj_desc->reference.object = table_info.installed_desc; + + if (ACPI_FAILURE(status)) { + if (status == AE_ALREADY_EXISTS) { + /* Table already exists, just return the handle */ + + return_ACPI_STATUS(AE_OK); + } goto cleanup; } /* Add the table to the namespace */ - status = acpi_ns_load_table (table_info.installed_desc, parent_node); - if (ACPI_FAILURE (status)) { + status = acpi_ns_load_table(table_info.installed_desc, parent_node); + if (ACPI_FAILURE(status)) { /* Uninstall table on error */ - (void) acpi_tb_uninstall_table (table_info.installed_desc); + (void)acpi_tb_uninstall_table(table_info.installed_desc); goto cleanup; } - /* Init the table handle */ + return_ACPI_STATUS(AE_OK); - obj_desc->reference.opcode = AML_LOAD_OP; - obj_desc->reference.object = table_info.installed_desc; - *ddb_handle = obj_desc; - return_ACPI_STATUS (AE_OK); - - -cleanup: - acpi_ut_remove_reference (obj_desc); - return_ACPI_STATUS (status); + cleanup: + acpi_ut_remove_reference(obj_desc); + *ddb_handle = NULL; + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ex_load_table_op @@ -151,56 +149,53 @@ cleanup: ******************************************************************************/ acpi_status -acpi_ex_load_table_op ( - struct acpi_walk_state *walk_state, - union acpi_operand_object **return_desc) +acpi_ex_load_table_op(struct acpi_walk_state *walk_state, + union acpi_operand_object **return_desc) { - acpi_status status; - union acpi_operand_object **operand = &walk_state->operands[0]; - struct acpi_table_header *table; - struct acpi_namespace_node *parent_node; - struct acpi_namespace_node *start_node; - struct acpi_namespace_node *parameter_node = NULL; - union acpi_operand_object *ddb_handle; - - - ACPI_FUNCTION_TRACE ("ex_load_table_op"); + acpi_status status; + union acpi_operand_object **operand = &walk_state->operands[0]; + struct acpi_table_header *table; + struct acpi_namespace_node *parent_node; + struct acpi_namespace_node *start_node; + struct acpi_namespace_node *parameter_node = NULL; + union acpi_operand_object *ddb_handle; + ACPI_FUNCTION_TRACE("ex_load_table_op"); #if 0 /* * Make sure that the signature does not match one of the tables that * is already loaded. */ - status = acpi_tb_match_signature (operand[0]->string.pointer, NULL); + status = acpi_tb_match_signature(operand[0]->string.pointer, NULL); if (status == AE_OK) { /* Signature matched -- don't allow override */ - return_ACPI_STATUS (AE_ALREADY_EXISTS); + return_ACPI_STATUS(AE_ALREADY_EXISTS); } #endif /* Find the ACPI table */ - status = acpi_tb_find_table (operand[0]->string.pointer, - operand[1]->string.pointer, - operand[2]->string.pointer, &table); - if (ACPI_FAILURE (status)) { + status = acpi_tb_find_table(operand[0]->string.pointer, + operand[1]->string.pointer, + operand[2]->string.pointer, &table); + if (ACPI_FAILURE(status)) { if (status != AE_NOT_FOUND) { - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } /* Table not found, return an Integer=0 and AE_OK */ - ddb_handle = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER); + ddb_handle = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); if (!ddb_handle) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } ddb_handle->integer.value = 0; *return_desc = ddb_handle; - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } /* Default nodes */ @@ -215,10 +210,12 @@ acpi_ex_load_table_op ( * Find the node referenced by the root_path_string. This is the * location within the namespace where the table will be loaded. */ - status = acpi_ns_get_node_by_path (operand[3]->string.pointer, start_node, - ACPI_NS_SEARCH_PARENT, &parent_node); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = + acpi_ns_get_node_by_path(operand[3]->string.pointer, + start_node, ACPI_NS_SEARCH_PARENT, + &parent_node); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } } @@ -226,7 +223,7 @@ acpi_ex_load_table_op ( if (operand[4]->string.length > 0) { if ((operand[4]->string.pointer[0] != '\\') && - (operand[4]->string.pointer[0] != '^')) { + (operand[4]->string.pointer[0] != '^')) { /* * Path is not absolute, so it will be relative to the node * referenced by the root_path_string (or the NS root if omitted) @@ -236,18 +233,20 @@ acpi_ex_load_table_op ( /* Find the node referenced by the parameter_path_string */ - status = acpi_ns_get_node_by_path (operand[4]->string.pointer, start_node, - ACPI_NS_SEARCH_PARENT, ¶meter_node); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = + acpi_ns_get_node_by_path(operand[4]->string.pointer, + start_node, ACPI_NS_SEARCH_PARENT, + ¶meter_node); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } } /* Load the table into the namespace */ - status = acpi_ex_add_table (table, parent_node, &ddb_handle); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ex_add_table(table, parent_node, &ddb_handle); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Parameter Data (optional) */ @@ -255,20 +254,20 @@ acpi_ex_load_table_op ( if (parameter_node) { /* Store the parameter data into the optional parameter object */ - status = acpi_ex_store (operand[5], - ACPI_CAST_PTR (union acpi_operand_object, parameter_node), - walk_state); - if (ACPI_FAILURE (status)) { - (void) acpi_ex_unload_table (ddb_handle); - return_ACPI_STATUS (status); + status = acpi_ex_store(operand[5], + ACPI_CAST_PTR(union acpi_operand_object, + parameter_node), + walk_state); + if (ACPI_FAILURE(status)) { + (void)acpi_ex_unload_table(ddb_handle); + return_ACPI_STATUS(status); } } *return_desc = ddb_handle; - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ex_load_op @@ -285,38 +284,37 @@ acpi_ex_load_table_op ( ******************************************************************************/ acpi_status -acpi_ex_load_op ( - union acpi_operand_object *obj_desc, - union acpi_operand_object *target, - struct acpi_walk_state *walk_state) +acpi_ex_load_op(union acpi_operand_object *obj_desc, + union acpi_operand_object *target, + struct acpi_walk_state *walk_state) { - acpi_status status; - union acpi_operand_object *ddb_handle; - union acpi_operand_object *buffer_desc = NULL; - struct acpi_table_header *table_ptr = NULL; - acpi_physical_address address; - struct acpi_table_header table_header; - u32 i; - - ACPI_FUNCTION_TRACE ("ex_load_op"); + acpi_status status; + union acpi_operand_object *ddb_handle; + union acpi_operand_object *buffer_desc = NULL; + struct acpi_table_header *table_ptr = NULL; + acpi_physical_address address; + struct acpi_table_header table_header; + u32 i; + ACPI_FUNCTION_TRACE("ex_load_op"); /* Object can be either an op_region or a Field */ - switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { + switch (ACPI_GET_OBJECT_TYPE(obj_desc)) { case ACPI_TYPE_REGION: - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Region %p %s\n", - obj_desc, acpi_ut_get_object_type_name (obj_desc))); + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Region %p %s\n", + obj_desc, + acpi_ut_get_object_type_name(obj_desc))); /* * If the Region Address and Length have not been previously evaluated, * evaluate them now and save the results. */ if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) { - status = acpi_ds_get_region_arguments (obj_desc); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ds_get_region_arguments(obj_desc); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } } @@ -328,116 +326,127 @@ acpi_ex_load_op ( table_header.length = 0; for (i = 0; i < 8; i++) { - status = acpi_ev_address_space_dispatch (obj_desc, ACPI_READ, - (acpi_physical_address) (i + address), 8, - ((u8 *) &table_header) + i); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = + acpi_ev_address_space_dispatch(obj_desc, ACPI_READ, + (acpi_physical_address) + (i + address), 8, + ((u8 *) & + table_header) + i); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } } /* Sanity check the table length */ - if (table_header.length < sizeof (struct acpi_table_header)) { - return_ACPI_STATUS (AE_BAD_HEADER); + if (table_header.length < sizeof(struct acpi_table_header)) { + return_ACPI_STATUS(AE_BAD_HEADER); } /* Allocate a buffer for the entire table */ - table_ptr = ACPI_MEM_ALLOCATE (table_header.length); + table_ptr = ACPI_MEM_ALLOCATE(table_header.length); if (!table_ptr) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } /* Get the entire table from the op region */ for (i = 0; i < table_header.length; i++) { - status = acpi_ev_address_space_dispatch (obj_desc, ACPI_READ, - (acpi_physical_address) (i + address), 8, - ((u8 *) table_ptr + i)); - if (ACPI_FAILURE (status)) { + status = + acpi_ev_address_space_dispatch(obj_desc, ACPI_READ, + (acpi_physical_address) + (i + address), 8, + ((u8 *) table_ptr + + i)); + if (ACPI_FAILURE(status)) { goto cleanup; } } break; - case ACPI_TYPE_LOCAL_REGION_FIELD: case ACPI_TYPE_LOCAL_BANK_FIELD: case ACPI_TYPE_LOCAL_INDEX_FIELD: - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Field %p %s\n", - obj_desc, acpi_ut_get_object_type_name (obj_desc))); + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Field %p %s\n", + obj_desc, + acpi_ut_get_object_type_name(obj_desc))); /* * The length of the field must be at least as large as the table. * Read the entire field and thus the entire table. Buffer is * allocated during the read. */ - status = acpi_ex_read_data_from_field (walk_state, obj_desc, &buffer_desc); - if (ACPI_FAILURE (status)) { - goto cleanup; + status = + acpi_ex_read_data_from_field(walk_state, obj_desc, + &buffer_desc); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - table_ptr = ACPI_CAST_PTR (struct acpi_table_header, - buffer_desc->buffer.pointer); + table_ptr = ACPI_CAST_PTR(struct acpi_table_header, + buffer_desc->buffer.pointer); - /* Sanity check the table length */ + /* All done with the buffer_desc, delete it */ - if (table_ptr->length < sizeof (struct acpi_table_header)) { - return_ACPI_STATUS (AE_BAD_HEADER); + buffer_desc->buffer.pointer = NULL; + acpi_ut_remove_reference(buffer_desc); + + /* Sanity check the table length */ + + if (table_ptr->length < sizeof(struct acpi_table_header)) { + status = AE_BAD_HEADER; + goto cleanup; } break; - default: - return_ACPI_STATUS (AE_AML_OPERAND_TYPE); + return_ACPI_STATUS(AE_AML_OPERAND_TYPE); } /* The table must be either an SSDT or a PSDT */ - if ((!ACPI_STRNCMP (table_ptr->signature, - acpi_gbl_table_data[ACPI_TABLE_PSDT].signature, - acpi_gbl_table_data[ACPI_TABLE_PSDT].sig_length)) && - (!ACPI_STRNCMP (table_ptr->signature, - acpi_gbl_table_data[ACPI_TABLE_SSDT].signature, - acpi_gbl_table_data[ACPI_TABLE_SSDT].sig_length))) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Table has invalid signature [%4.4s], must be SSDT or PSDT\n", - table_ptr->signature)); + if ((!ACPI_STRNCMP(table_ptr->signature, + acpi_gbl_table_data[ACPI_TABLE_PSDT].signature, + acpi_gbl_table_data[ACPI_TABLE_PSDT].sig_length)) && + (!ACPI_STRNCMP(table_ptr->signature, + acpi_gbl_table_data[ACPI_TABLE_SSDT].signature, + acpi_gbl_table_data[ACPI_TABLE_SSDT].sig_length))) { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Table has invalid signature [%4.4s], must be SSDT or PSDT\n", + table_ptr->signature)); status = AE_BAD_SIGNATURE; goto cleanup; } /* Install the new table into the local data structures */ - status = acpi_ex_add_table (table_ptr, acpi_gbl_root_node, &ddb_handle); - if (ACPI_FAILURE (status)) { - goto cleanup; - } - - /* Store the ddb_handle into the Target operand */ + status = acpi_ex_add_table(table_ptr, acpi_gbl_root_node, &ddb_handle); + if (ACPI_FAILURE(status)) { + /* On error, table_ptr was deallocated above */ - status = acpi_ex_store (ddb_handle, target, walk_state); - if (ACPI_FAILURE (status)) { - (void) acpi_ex_unload_table (ddb_handle); + return_ACPI_STATUS(status); } - return_ACPI_STATUS (status); + /* Store the ddb_handle into the Target operand */ + status = acpi_ex_store(ddb_handle, target, walk_state); + if (ACPI_FAILURE(status)) { + (void)acpi_ex_unload_table(ddb_handle); -cleanup: + /* table_ptr was deallocated above */ - if (buffer_desc) { - acpi_ut_remove_reference (buffer_desc); + return_ACPI_STATUS(status); } - else { - ACPI_MEM_FREE (table_ptr); + + cleanup: + if (ACPI_FAILURE(status)) { + ACPI_MEM_FREE(table_ptr); } - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ex_unload_table @@ -450,17 +459,13 @@ cleanup: * ******************************************************************************/ -acpi_status -acpi_ex_unload_table ( - union acpi_operand_object *ddb_handle) +acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle) { - acpi_status status = AE_OK; - union acpi_operand_object *table_desc = ddb_handle; - struct acpi_table_desc *table_info; - - - ACPI_FUNCTION_TRACE ("ex_unload_table"); + acpi_status status = AE_OK; + union acpi_operand_object *table_desc = ddb_handle; + struct acpi_table_desc *table_info; + ACPI_FUNCTION_TRACE("ex_unload_table"); /* * Validate the handle @@ -469,28 +474,28 @@ acpi_ex_unload_table ( * validated here. */ if ((!ddb_handle) || - (ACPI_GET_DESCRIPTOR_TYPE (ddb_handle) != ACPI_DESC_TYPE_OPERAND) || - (ACPI_GET_OBJECT_TYPE (ddb_handle) != ACPI_TYPE_LOCAL_REFERENCE)) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + (ACPI_GET_DESCRIPTOR_TYPE(ddb_handle) != ACPI_DESC_TYPE_OPERAND) || + (ACPI_GET_OBJECT_TYPE(ddb_handle) != ACPI_TYPE_LOCAL_REFERENCE)) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Get the actual table descriptor from the ddb_handle */ - table_info = (struct acpi_table_desc *) table_desc->reference.object; + table_info = (struct acpi_table_desc *)table_desc->reference.object; /* * Delete the entire namespace under this table Node * (Offset contains the table_id) */ - acpi_ns_delete_namespace_by_owner (table_info->table_id); + acpi_ns_delete_namespace_by_owner(table_info->owner_id); + acpi_ut_release_owner_id(&table_info->owner_id); /* Delete the table itself */ - (void) acpi_tb_uninstall_table (table_info->installed_desc); + (void)acpi_tb_uninstall_table(table_info->installed_desc); /* Delete the table descriptor (ddb_handle) */ - acpi_ut_remove_reference (table_desc); - return_ACPI_STATUS (status); + acpi_ut_remove_reference(table_desc); + return_ACPI_STATUS(status); } - |
