drivers/acpi/acpica/utcopy.c

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

File Facts

System
Linux kernel
Corpus path
drivers/acpi/acpica/utcopy.c
Extension
.c
Size
27055 bytes
Lines
978
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

switch (internal_object->reference.class) {
		case ACPI_REFCLASS_NAME:
			/*
			 * For namepath, return the object handle ("reference")
			 * We are referring to the namespace node
			 */
			external_object->reference.handle =
			    internal_object->reference.node;
			external_object->reference.actual_type =
			    acpi_ns_get_type(internal_object->reference.node);
			break;

		default:

			/* All other reference types are unsupported */

			return_ACPI_STATUS(AE_TYPE);
		}
		break;

	case ACPI_TYPE_PROCESSOR:

		external_object->processor.proc_id =
		    internal_object->processor.proc_id;
		external_object->processor.pblk_address =
		    internal_object->processor.address;
		external_object->processor.pblk_length =
		    internal_object->processor.length;
		break;

	case ACPI_TYPE_POWER:

		external_object->power_resource.system_level =
		    internal_object->power_resource.system_level;

		external_object->power_resource.resource_order =
		    internal_object->power_resource.resource_order;
		break;

	default:
		/*
		 * There is no corresponding external object type
		 */
		ACPI_ERROR((AE_INFO,
			    "Unsupported object type, cannot convert to external object: %s",
			    acpi_ut_get_type_name(internal_object->common.
						  type)));

		return_ACPI_STATUS(AE_SUPPORT);
	}

	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_copy_ielement_to_eelement
 *
 * PARAMETERS:  acpi_pkg_callback
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Copy one package element to another package element
 *
 ******************************************************************************/

static acpi_status
acpi_ut_copy_ielement_to_eelement(u8 object_type,
				  union acpi_operand_object *source_object,
				  union acpi_generic_state *state,
				  void *context)
{
	acpi_status status = AE_OK;
	struct acpi_pkg_info *info = (struct acpi_pkg_info *)context;
	acpi_size object_space;
	u32 this_index;
	union acpi_object *target_object;

	ACPI_FUNCTION_ENTRY();

	this_index = state->pkg.index;
	target_object = (union acpi_object *)&((union acpi_object *)
					       (state->pkg.dest_object))->
	    package.elements[this_index];

	switch (object_type) {
	case ACPI_COPY_TYPE_SIMPLE:
		/*
		 * This is a simple or null object
		 */

Annotation

Implementation Notes