acpi_status acpi_ex_resolve_node_to_value ( acpi_namespace_node **object_ptr, acpi_walk_state *walk_state) { acpi_status status = AE_OK; acpi_operand_object *source_desc; acpi_operand_object *obj_desc = NULL; acpi_namespace_node *node; acpi_object_type8 entry_type; acpi_integer temp_val; FUNCTION_TRACE ("Ex_resolve_node_to_value"); /* * The stack pointer points to a acpi_namespace_node (Node). Get the * object that is attached to the Node. */ node = *object_ptr; source_desc = acpi_ns_get_attached_object (node); entry_type = acpi_ns_get_type ((acpi_handle) node); ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Entry=%p Source_desc=%p Type=%X\n", node, source_desc, entry_type)); /* * Several object types require no further processing: * 1) Devices rarely have an attached object, return the Node * 2) Method locals and arguments have a pseudo-Node */ if (entry_type == ACPI_TYPE_DEVICE || (node->flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL))) { return_ACPI_STATUS (AE_OK); } if (!source_desc) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No object attached to node %p\n", node)); return_ACPI_STATUS (AE_AML_NO_OPERAND); } /* * Action is based on the type of the Node, which indicates the type * of the attached object or pointer */ switch (entry_type) { case ACPI_TYPE_PACKAGE: if (ACPI_TYPE_PACKAGE != source_desc->common.type) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Package, type %s\n", acpi_ut_get_type_name (source_desc->common.type))); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); break; case ACPI_TYPE_BUFFER: if (ACPI_TYPE_BUFFER != source_desc->common.type) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Buffer, type %s\n", acpi_ut_get_type_name (source_desc->common.type))); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); break; case ACPI_TYPE_STRING: if (ACPI_TYPE_STRING != source_desc->common.type) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a String, type %s\n", acpi_ut_get_type_name (source_desc->common.type))); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); break; case ACPI_TYPE_INTEGER: if (ACPI_TYPE_INTEGER != source_desc->common.type) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Integer, type %s\n", acpi_ut_get_type_name (source_desc->common.type))); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); break; case ACPI_TYPE_BUFFER_FIELD: case INTERNAL_TYPE_REGION_FIELD: case INTERNAL_TYPE_BANK_FIELD: case INTERNAL_TYPE_INDEX_FIELD: ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Field_read Node=%p Source_desc=%p Type=%X\n", node, source_desc, entry_type)); status = acpi_ex_read_data_from_field (source_desc, &obj_desc); break; /* * For these objects, just return the object attached to the Node */ case ACPI_TYPE_MUTEX: case ACPI_TYPE_METHOD: case ACPI_TYPE_POWER: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: case ACPI_TYPE_EVENT: case ACPI_TYPE_REGION: /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); break; /* TYPE_Any is untyped, and thus there is no object associated with it */ case ACPI_TYPE_ANY: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Untyped entry %p, no attached object!\n", node)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); /* Cannot be AE_TYPE */ break; /* * The only named references allowed are named constants * e.g. -- Name (\OSFL, Ones) */ case INTERNAL_TYPE_REFERENCE: switch (source_desc->reference.opcode) { case AML_ZERO_OP: temp_val = 0; break; case AML_ONE_OP: temp_val = 1; break; case AML_ONES_OP: temp_val = ACPI_INTEGER_MAX; break; case AML_REVISION_OP: temp_val = ACPI_CA_SUPPORT_LEVEL; break; default: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unsupported reference opcode %X\n", source_desc->reference.opcode)); return_ACPI_STATUS (AE_AML_BAD_OPCODE); } /* Create object for result */ obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER); if (!obj_desc) { return_ACPI_STATUS (AE_NO_MEMORY); } obj_desc->integer.value = temp_val; /* * Truncate value if we are executing from a 32-bit ACPI table * AND actually executing AML code. If we are resolving * an object in the namespace via an external call to the * subsystem, we will have a null Walk_state */ if (walk_state) { acpi_ex_truncate_for32bit_table (obj_desc, walk_state); } break; /* Default case is for unknown types */ default: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Node %p - Unknown object type %X\n", node, entry_type)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* switch (Entry_type) */ /* Put the object descriptor on the stack */ *object_ptr = (void *) obj_desc; return_ACPI_STATUS (status); }
acpi_status 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; acpi_integer temp; 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)) { 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))); /* * 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); } } /* Get the base physical address of the region */ address = obj_desc->region.address; /* Get part of the table header to get the table length */ 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, &temp); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Get the one valid byte of the returned 64-bit value */ ACPI_CAST_PTR(u8, &table_header)[i] = (u8) temp; } /* Sanity check the table length */ 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_ALLOCATE(table_header.length); if (!table_ptr) { 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, &temp); if (ACPI_FAILURE(status)) { goto cleanup; } /* Get the one valid byte of the returned 64-bit value */ ACPI_CAST_PTR(u8, table_ptr)[i] = (u8) temp; } 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))); /* * 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)) { return_ACPI_STATUS(status); } table_ptr = ACPI_CAST_PTR(struct acpi_table_header, buffer_desc->buffer.pointer); /* All done with the buffer_desc, delete it */ 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); } /* The table must be either an SSDT or a PSDT or an OEMx */ if ((!ACPI_COMPARE_NAME(table_ptr->signature, PSDT_SIG)) && (!ACPI_COMPARE_NAME(table_ptr->signature, SSDT_SIG)) && (strncmp(table_ptr->signature, "OEM", 3))) { ACPI_ERROR((AE_INFO, "Table has invalid signature [%4.4s], must be SSDT, PSDT or OEMx", 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)) { /* On error, table_ptr was deallocated above */ 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); /* table_ptr was deallocated above */ return_ACPI_STATUS(status); } ACPI_INFO((AE_INFO, "Dynamic SSDT Load - OemId [%6.6s] OemTableId [%8.8s]", table_ptr->oem_id, table_ptr->oem_table_id)); cleanup: if (ACPI_FAILURE(status)) { ACPI_FREE(table_ptr); } return_ACPI_STATUS(status); }
acpi_status acpi_ex_resolve_node_to_value ( struct acpi_namespace_node **object_ptr, struct acpi_walk_state *walk_state) { acpi_status status = AE_OK; union acpi_operand_object *source_desc; union acpi_operand_object *obj_desc = NULL; struct acpi_namespace_node *node; acpi_object_type entry_type; ACPI_FUNCTION_TRACE ("ex_resolve_node_to_value"); /* * The stack pointer points to a struct acpi_namespace_node (Node). Get the * object that is attached to the Node. */ node = *object_ptr; source_desc = acpi_ns_get_attached_object (node); entry_type = acpi_ns_get_type ((acpi_handle) node); ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Entry=%p source_desc=%p [%s]\n", node, source_desc, acpi_ut_get_type_name (entry_type))); if (entry_type == ACPI_TYPE_LOCAL_ALIAS) { /* There is always exactly one level of indirection */ node = (struct acpi_namespace_node *) node->object; source_desc = acpi_ns_get_attached_object (node); entry_type = acpi_ns_get_type ((acpi_handle) node); *object_ptr = node; } /* * Several object types require no further processing: * 1) Devices rarely have an attached object, return the Node * 2) Method locals and arguments have a pseudo-Node */ if (entry_type == ACPI_TYPE_DEVICE || (node->flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL))) { return_ACPI_STATUS (AE_OK); } if (!source_desc) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No object attached to node %p\n", node)); return_ACPI_STATUS (AE_AML_NO_OPERAND); } /* * Action is based on the type of the Node, which indicates the type * of the attached object or pointer */ switch (entry_type) { case ACPI_TYPE_PACKAGE: if (ACPI_GET_OBJECT_TYPE (source_desc) != ACPI_TYPE_PACKAGE) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Package, type %s\n", acpi_ut_get_object_type_name (source_desc))); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } status = acpi_ds_get_package_arguments (source_desc); if (ACPI_SUCCESS (status)) { /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); } break; case ACPI_TYPE_BUFFER: if (ACPI_GET_OBJECT_TYPE (source_desc) != ACPI_TYPE_BUFFER) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Buffer, type %s\n", acpi_ut_get_object_type_name (source_desc))); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } status = acpi_ds_get_buffer_arguments (source_desc); if (ACPI_SUCCESS (status)) { /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); } break; case ACPI_TYPE_STRING: if (ACPI_GET_OBJECT_TYPE (source_desc) != ACPI_TYPE_STRING) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a String, type %s\n", acpi_ut_get_object_type_name (source_desc))); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); break; case ACPI_TYPE_INTEGER: if (ACPI_GET_OBJECT_TYPE (source_desc) != ACPI_TYPE_INTEGER) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Object not a Integer, type %s\n", acpi_ut_get_object_type_name (source_desc))); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); break; case ACPI_TYPE_BUFFER_FIELD: case ACPI_TYPE_LOCAL_REGION_FIELD: case ACPI_TYPE_LOCAL_BANK_FIELD: case ACPI_TYPE_LOCAL_INDEX_FIELD: ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "field_read Node=%p source_desc=%p Type=%X\n", node, source_desc, entry_type)); status = acpi_ex_read_data_from_field (walk_state, source_desc, &obj_desc); break; /* * For these objects, just return the object attached to the Node */ case ACPI_TYPE_MUTEX: case ACPI_TYPE_METHOD: case ACPI_TYPE_POWER: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: case ACPI_TYPE_EVENT: case ACPI_TYPE_REGION: /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); break; /* TYPE_ANY is untyped, and thus there is no object associated with it */ case ACPI_TYPE_ANY: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Untyped entry %p, no attached object!\n", node)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); /* Cannot be AE_TYPE */ case ACPI_TYPE_LOCAL_REFERENCE: switch (source_desc->reference.opcode) { case AML_LOAD_OP: /* This is a ddb_handle */ /* Return an additional reference to the object */ obj_desc = source_desc; acpi_ut_add_reference (obj_desc); break; default: /* No named references are allowed here */ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unsupported Reference opcode %X (%s)\n", source_desc->reference.opcode, acpi_ps_get_opcode_name (source_desc->reference.opcode))); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } break; /* Default case is for unknown types */ default: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Node %p - Unknown object type %X\n", node, entry_type)); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* switch (entry_type) */ /* Put the object descriptor on the stack */ *object_ptr = (void *) obj_desc; return_ACPI_STATUS (status); }