drivers/acpi/acpica/dsinit.c

Source file repositories/reference/linux-study-clean/drivers/acpi/acpica/dsinit.c

File Facts

System
Linux kernel
Corpus path
drivers/acpi/acpica/dsinit.c
Extension
.c
Size
6183 bytes
Lines
225
Domain
Driver Families
Bucket
drivers/acpi
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"During Region initialization %p [%4.4s]",
					obj_handle,
					acpi_ut_get_node_name(obj_handle)));
		}

		info->op_region_count++;
		break;

	case ACPI_TYPE_METHOD:
		/*
		 * Auto-serialization support. We will examine each method that is
		 * not_serialized to determine if it creates any Named objects. If
		 * it does, it will be marked serialized to prevent problems if
		 * the method is entered by two or more threads and an attempt is
		 * made to create the same named object twice -- which results in
		 * an AE_ALREADY_EXISTS exception and method abort.
		 */
		info->method_count++;
		obj_desc = acpi_ns_get_attached_object(node);
		if (!obj_desc) {
			break;
		}

		/* Ignore if already serialized */

		if (obj_desc->method.info_flags & ACPI_METHOD_SERIALIZED) {
			info->serial_method_count++;
			break;
		}

		if (acpi_gbl_auto_serialize_methods) {

			/* Parse/scan method and serialize it if necessary */

			acpi_ds_auto_serialize_method(node, obj_desc);
			if (obj_desc->method.
			    info_flags & ACPI_METHOD_SERIALIZED) {

				/* Method was just converted to Serialized */

				info->serial_method_count++;
				info->serialized_method_count++;
				break;
			}
		}

		info->non_serial_method_count++;
		break;

	case ACPI_TYPE_DEVICE:

		info->device_count++;
		break;

	default:

		break;
	}

	/*
	 * We ignore errors from above, and always return OK, since
	 * we don't want to abort the walk on a single error.
	 */
	return (AE_OK);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_initialize_objects
 *
 * PARAMETERS:  table_desc      - Descriptor for parent ACPI table
 *              start_node      - Root of subtree to be initialized.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
 *              necessary initialization on the objects found therein
 *
 ******************************************************************************/

acpi_status
acpi_ds_initialize_objects(u32 table_index,
			   struct acpi_namespace_node *start_node)
{
	acpi_status status;
	struct acpi_init_walk_info info;
	struct acpi_table_header *table;
	acpi_owner_id owner_id;

Annotation

Implementation Notes