static acpi_status acpi_ns_init_one_object(acpi_handle obj_handle, u32 level, void *context, void **return_value) { acpi_object_type type; acpi_status status = AE_OK; struct acpi_init_walk_info *info = (struct acpi_init_walk_info *)context; struct acpi_namespace_node *node = (struct acpi_namespace_node *)obj_handle; union acpi_operand_object *obj_desc; ACPI_FUNCTION_NAME(ns_init_one_object); info->object_count++; /* And even then, we are only interested in a few object types */ type = acpi_ns_get_type(obj_handle); obj_desc = acpi_ns_get_attached_object(node); if (!obj_desc) { return (AE_OK); } /* Increment counters for object types we are looking for */ switch (type) { case ACPI_TYPE_REGION: info->op_region_count++; break; case ACPI_TYPE_BUFFER_FIELD: info->field_count++; break; case ACPI_TYPE_LOCAL_BANK_FIELD: info->field_count++; break; case ACPI_TYPE_BUFFER: info->buffer_count++; break; case ACPI_TYPE_PACKAGE: info->package_count++; break; default: /* No init required, just exit now */ return (AE_OK); } /* If the object is already initialized, nothing else to do */ if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { return (AE_OK); } /* Must lock the interpreter before executing AML code */ acpi_ex_enter_interpreter(); /* * Each of these types can contain executable AML code within the * declaration. */ switch (type) { case ACPI_TYPE_REGION: info->op_region_init++; status = acpi_ds_get_region_arguments(obj_desc); break; case ACPI_TYPE_BUFFER_FIELD: info->field_init++; status = acpi_ds_get_buffer_field_arguments(obj_desc); break; case ACPI_TYPE_LOCAL_BANK_FIELD: info->field_init++; status = acpi_ds_get_bank_field_arguments(obj_desc); break; case ACPI_TYPE_BUFFER: info->buffer_init++; status = acpi_ds_get_buffer_arguments(obj_desc); break; case ACPI_TYPE_PACKAGE: info->package_init++; status = acpi_ds_get_package_arguments(obj_desc); break; default: /* No other types can get here */ break; } if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Could not execute arguments for [%4.4s] (%s)", acpi_ut_get_node_name(node), acpi_ut_get_type_name(type))); } /* * We ignore errors from above, and always return OK, since we don't want * to abort the walk on any single error. */ acpi_ex_exit_interpreter(); return (AE_OK); }
acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info) { union acpi_operand_object *obj_desc; union acpi_operand_object *second_desc = NULL; acpi_status status; u32 access_byte_width; u32 type; ACPI_FUNCTION_TRACE(ex_prep_field_value); /* */ if (info->field_type != ACPI_TYPE_LOCAL_INDEX_FIELD) { if (!info->region_node) { ACPI_ERROR((AE_INFO, "Null RegionNode")); return_ACPI_STATUS(AE_AML_NO_OPERAND); } type = acpi_ns_get_type(info->region_node); if (type != ACPI_TYPE_REGION) { ACPI_ERROR((AE_INFO, "Needed Region, found type 0x%X (%s)", type, acpi_ut_get_type_name(type))); return_ACPI_STATUS(AE_AML_OPERAND_TYPE); } } /* */ obj_desc = acpi_ut_create_internal_object(info->field_type); if (!obj_desc) { return_ACPI_STATUS(AE_NO_MEMORY); } /* */ obj_desc->common_field.node = info->field_node; status = acpi_ex_prep_common_field_object(obj_desc, info->field_flags, info->attribute, info->field_bit_position, info->field_bit_length); if (ACPI_FAILURE(status)) { acpi_ut_delete_object_desc(obj_desc); return_ACPI_STATUS(status); } /* */ switch (info->field_type) { case ACPI_TYPE_LOCAL_REGION_FIELD: obj_desc->field.region_obj = acpi_ns_get_attached_object(info->region_node); /* */ obj_desc->field.access_length = info->access_length; if (info->connection_node) { second_desc = info->connection_node->object; if (!(second_desc->common.flags & AOPOBJ_DATA_VALID)) { status = acpi_ds_get_buffer_arguments(second_desc); if (ACPI_FAILURE(status)) { acpi_ut_delete_object_desc(obj_desc); return_ACPI_STATUS(status); } } obj_desc->field.resource_buffer = second_desc->buffer.pointer; obj_desc->field.resource_length = (u16)second_desc->buffer.length; } else if (info->resource_buffer) { obj_desc->field.resource_buffer = info->resource_buffer; obj_desc->field.resource_length = info->resource_length; } /* */ if ((obj_desc->field.region_obj->region.space_id == ACPI_ADR_SPACE_EC) && (obj_desc->common_field.bit_length > 8)) { access_byte_width = ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->common_field. bit_length); /* */ if (access_byte_width < 256) { obj_desc->common_field.access_byte_width = (u8)access_byte_width; } } /* */ acpi_ut_add_reference(obj_desc->field.region_obj); ACPI_DEBUG_PRINT((ACPI_DB_BFIELD, "RegionField: BitOff %X, Off %X, Gran %X, Region %p\n", obj_desc->field.start_field_bit_offset, obj_desc->field.base_byte_offset, obj_desc->field.access_byte_width, obj_desc->field.region_obj)); break; case ACPI_TYPE_LOCAL_BANK_FIELD: obj_desc->bank_field.value = info->bank_value; obj_desc->bank_field.region_obj = acpi_ns_get_attached_object(info->region_node); obj_desc->bank_field.bank_obj = acpi_ns_get_attached_object(info->register_node); /* */ acpi_ut_add_reference(obj_desc->bank_field.region_obj); acpi_ut_add_reference(obj_desc->bank_field.bank_obj); ACPI_DEBUG_PRINT((ACPI_DB_BFIELD, "Bank Field: BitOff %X, Off %X, Gran %X, Region %p, BankReg %p\n", obj_desc->bank_field.start_field_bit_offset, obj_desc->bank_field.base_byte_offset, obj_desc->field.access_byte_width, obj_desc->bank_field.region_obj, obj_desc->bank_field.bank_obj)); /* */ second_desc = obj_desc->common.next_object; second_desc->extra.aml_start = ACPI_CAST_PTR(union acpi_parse_object, info->data_register_node)->named.data; second_desc->extra.aml_length = ACPI_CAST_PTR(union acpi_parse_object, info->data_register_node)->named.length; break; case ACPI_TYPE_LOCAL_INDEX_FIELD: /* */ obj_desc->index_field.index_obj = acpi_ns_get_attached_object(info->register_node); obj_desc->index_field.data_obj = acpi_ns_get_attached_object(info->data_register_node); if (!obj_desc->index_field.data_obj || !obj_desc->index_field.index_obj) { ACPI_ERROR((AE_INFO, "Null Index Object during field prep")); acpi_ut_delete_object_desc(obj_desc); return_ACPI_STATUS(AE_AML_INTERNAL); } /* */ acpi_ut_add_reference(obj_desc->index_field.data_obj); acpi_ut_add_reference(obj_desc->index_field.index_obj); /* */ obj_desc->index_field.value = (u32) ACPI_ROUND_DOWN(ACPI_DIV_8(info->field_bit_position), obj_desc->index_field. access_byte_width); ACPI_DEBUG_PRINT((ACPI_DB_BFIELD, "IndexField: BitOff %X, Off %X, Value %X, Gran %X, Index %p, Data %p\n", obj_desc->index_field.start_field_bit_offset, obj_desc->index_field.base_byte_offset, obj_desc->index_field.value, obj_desc->field.access_byte_width, obj_desc->index_field.index_obj, obj_desc->index_field.data_obj)); break; default: /* */ break; } /* */ status = acpi_ns_attach_object(info->field_node, obj_desc, acpi_ns_get_type(info->field_node)); ACPI_DEBUG_PRINT((ACPI_DB_BFIELD, "Set NamedObj %p [%4.4s], ObjDesc %p\n", info->field_node, acpi_ut_get_node_name(info->field_node), obj_desc)); /* */ acpi_ut_remove_reference(obj_desc); 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); }
acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info) { union acpi_operand_object *obj_desc; union acpi_operand_object *second_desc = NULL; acpi_status status; u32 access_byte_width; u32 type; ACPI_FUNCTION_TRACE(ex_prep_field_value); /* Parameter validation */ if (info->field_type != ACPI_TYPE_LOCAL_INDEX_FIELD) { if (!info->region_node) { ACPI_ERROR((AE_INFO, "Null RegionNode")); return_ACPI_STATUS(AE_AML_NO_OPERAND); } type = acpi_ns_get_type(info->region_node); if (type != ACPI_TYPE_REGION) { ACPI_ERROR((AE_INFO, "Needed Region, found type 0x%X (%s)", type, acpi_ut_get_type_name(type))); return_ACPI_STATUS(AE_AML_OPERAND_TYPE); } } /* Allocate a new field object */ obj_desc = acpi_ut_create_internal_object(info->field_type); if (!obj_desc) { return_ACPI_STATUS(AE_NO_MEMORY); } /* Initialize areas of the object that are common to all fields */ obj_desc->common_field.node = info->field_node; status = acpi_ex_prep_common_field_object(obj_desc, info->field_flags, info->attribute, info->field_bit_position, info->field_bit_length); if (ACPI_FAILURE(status)) { acpi_ut_delete_object_desc(obj_desc); return_ACPI_STATUS(status); } /* Initialize areas of the object that are specific to the field type */ switch (info->field_type) { case ACPI_TYPE_LOCAL_REGION_FIELD: obj_desc->field.region_obj = acpi_ns_get_attached_object(info->region_node); /* Fields specific to generic_serial_bus fields */ obj_desc->field.access_length = info->access_length; if (info->connection_node) { second_desc = info->connection_node->object; if (!(second_desc->common.flags & AOPOBJ_DATA_VALID)) { status = acpi_ds_get_buffer_arguments(second_desc); if (ACPI_FAILURE(status)) { acpi_ut_delete_object_desc(obj_desc); return_ACPI_STATUS(status); } } obj_desc->field.resource_buffer = second_desc->buffer.pointer; obj_desc->field.resource_length = (u16)second_desc->buffer.length; } else if (info->resource_buffer) { obj_desc->field.resource_buffer = info->resource_buffer; obj_desc->field.resource_length = info->resource_length; } /* Allow full data read from EC address space */ if ((obj_desc->field.region_obj->region.space_id == ACPI_ADR_SPACE_EC) && (obj_desc->common_field.bit_length > 8)) { access_byte_width = ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->common_field. bit_length); /* Maximum byte width supported is 255 */ if (access_byte_width < 256) { obj_desc->common_field.access_byte_width = (u8)access_byte_width; } } /* An additional reference for the container */ acpi_ut_add_reference(obj_desc->field.region_obj); ACPI_DEBUG_PRINT((ACPI_DB_BFIELD, "RegionField: BitOff %X, Off %X, Gran %X, Region %p\n", obj_desc->field.start_field_bit_offset, obj_desc->field.base_byte_offset, obj_desc->field.access_byte_width, obj_desc->field.region_obj)); break; case ACPI_TYPE_LOCAL_BANK_FIELD: obj_desc->bank_field.value = info->bank_value; obj_desc->bank_field.region_obj = acpi_ns_get_attached_object(info->region_node); obj_desc->bank_field.bank_obj = acpi_ns_get_attached_object(info->register_node); /* An additional reference for the attached objects */ acpi_ut_add_reference(obj_desc->bank_field.region_obj); acpi_ut_add_reference(obj_desc->bank_field.bank_obj); ACPI_DEBUG_PRINT((ACPI_DB_BFIELD, "Bank Field: BitOff %X, Off %X, Gran %X, Region %p, BankReg %p\n", obj_desc->bank_field.start_field_bit_offset, obj_desc->bank_field.base_byte_offset, obj_desc->field.access_byte_width, obj_desc->bank_field.region_obj, obj_desc->bank_field.bank_obj)); /* * Remember location in AML stream of the field unit * opcode and operands -- since the bank_value * operands must be evaluated. */ second_desc = obj_desc->common.next_object; second_desc->extra.aml_start = ACPI_CAST_PTR(union acpi_parse_object, info->data_register_node)->named.data; second_desc->extra.aml_length = ACPI_CAST_PTR(union acpi_parse_object, info->data_register_node)->named.length; break; case ACPI_TYPE_LOCAL_INDEX_FIELD: /* Get the Index and Data registers */ obj_desc->index_field.index_obj = acpi_ns_get_attached_object(info->register_node); obj_desc->index_field.data_obj = acpi_ns_get_attached_object(info->data_register_node); if (!obj_desc->index_field.data_obj || !obj_desc->index_field.index_obj) { ACPI_ERROR((AE_INFO, "Null Index Object during field prep")); acpi_ut_delete_object_desc(obj_desc); return_ACPI_STATUS(AE_AML_INTERNAL); } /* An additional reference for the attached objects */ acpi_ut_add_reference(obj_desc->index_field.data_obj); acpi_ut_add_reference(obj_desc->index_field.index_obj); /* * April 2006: Changed to match MS behavior * * The value written to the Index register is the byte offset of the * target field in units of the granularity of the index_field * * Previously, the value was calculated as an index in terms of the * width of the Data register, as below: * * obj_desc->index_field.Value = (u32) * (Info->field_bit_position / ACPI_MUL_8 ( * obj_desc->Field.access_byte_width)); * * February 2006: Tried value as a byte offset: * obj_desc->index_field.Value = (u32) * ACPI_DIV_8 (Info->field_bit_position); */ obj_desc->index_field.value = (u32) ACPI_ROUND_DOWN(ACPI_DIV_8(info->field_bit_position), obj_desc->index_field. access_byte_width); ACPI_DEBUG_PRINT((ACPI_DB_BFIELD, "IndexField: BitOff %X, Off %X, Value %X, Gran %X, Index %p, Data %p\n", obj_desc->index_field.start_field_bit_offset, obj_desc->index_field.base_byte_offset, obj_desc->index_field.value, obj_desc->field.access_byte_width, obj_desc->index_field.index_obj, obj_desc->index_field.data_obj)); break; default: /* No other types should get here */ break; } /* * Store the constructed descriptor (obj_desc) into the parent Node, * preserving the current type of that named_obj. */ status = acpi_ns_attach_object(info->field_node, obj_desc, acpi_ns_get_type(info->field_node)); ACPI_DEBUG_PRINT((ACPI_DB_BFIELD, "Set NamedObj %p [%4.4s], ObjDesc %p\n", info->field_node, acpi_ut_get_node_name(info->field_node), obj_desc)); /* Remove local reference to the object */ acpi_ut_remove_reference(obj_desc); return_ACPI_STATUS(status); }
static acpi_status acpi_ns_init_one_object(acpi_handle obj_handle, u32 level, void *context, void **return_value) { acpi_object_type type; acpi_status status = AE_OK; struct acpi_init_walk_info *info = (struct acpi_init_walk_info *)context; struct acpi_namespace_node *node = (struct acpi_namespace_node *)obj_handle; union acpi_operand_object *obj_desc; ACPI_FUNCTION_NAME(ns_init_one_object); info->object_count++; type = acpi_ns_get_type(obj_handle); obj_desc = acpi_ns_get_attached_object(node); if (!obj_desc) { return (AE_OK); } switch (type) { case ACPI_TYPE_REGION: info->op_region_count++; break; case ACPI_TYPE_BUFFER_FIELD: info->field_count++; break; case ACPI_TYPE_LOCAL_BANK_FIELD: info->field_count++; break; case ACPI_TYPE_BUFFER: info->buffer_count++; break; case ACPI_TYPE_PACKAGE: info->package_count++; break; default: return (AE_OK); } if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { return (AE_OK); } acpi_ex_enter_interpreter(); switch (type) { case ACPI_TYPE_REGION: info->op_region_init++; status = acpi_ds_get_region_arguments(obj_desc); break; case ACPI_TYPE_BUFFER_FIELD: info->field_init++; status = acpi_ds_get_buffer_field_arguments(obj_desc); break; case ACPI_TYPE_LOCAL_BANK_FIELD: info->field_init++; status = acpi_ds_get_bank_field_arguments(obj_desc); break; case ACPI_TYPE_BUFFER: info->buffer_init++; status = acpi_ds_get_buffer_arguments(obj_desc); break; case ACPI_TYPE_PACKAGE: info->package_init++; status = acpi_ds_get_package_arguments(obj_desc); break; default: break; } if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Could not execute arguments for [%4.4s] (%s)", acpi_ut_get_node_name(node), acpi_ut_get_type_name(type))); } if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) { ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, ".")); } acpi_ex_exit_interpreter(); return (AE_OK); }