linux/drivers/acpi/acpica/rscreate.c

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
 *
 * Module Name: rscreate - Create resource lists/tables
 *
 ******************************************************************************/

#include <acpi/acpi.h>
#include "accommon.h"
#include "acresrc.h"
#include "acnamesp.h"

#define _COMPONENT …
ACPI_MODULE_NAME("rscreate")

/*******************************************************************************
 *
 * FUNCTION:    acpi_buffer_to_resource
 *
 * PARAMETERS:  aml_buffer          - Pointer to the resource byte stream
 *              aml_buffer_length   - Length of the aml_buffer
 *              resource_ptr        - Where the converted resource is returned
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Convert a raw AML buffer to a resource list
 *
 ******************************************************************************/
acpi_status
acpi_buffer_to_resource(u8 *aml_buffer,
			u16 aml_buffer_length,
			struct acpi_resource **resource_ptr)
{ … }

ACPI_EXPORT_SYMBOL(…)

/*******************************************************************************
 *
 * FUNCTION:    acpi_rs_create_resource_list
 *
 * PARAMETERS:  aml_buffer          - Pointer to the resource byte stream
 *              output_buffer       - Pointer to the user's buffer
 *
 * RETURN:      Status: AE_OK if okay, else a valid acpi_status code
 *              If output_buffer is not large enough, output_buffer_length
 *              indicates how large output_buffer should be, else it
 *              indicates how may u8 elements of output_buffer are valid.
 *
 * DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method
 *              execution and parses the stream to create a linked list
 *              of device resources.
 *
 ******************************************************************************/
acpi_status
acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer,
			     struct acpi_buffer *output_buffer)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_rs_create_pci_routing_table
 *
 * PARAMETERS:  package_object          - Pointer to a package containing one
 *                                        of more ACPI_OPERAND_OBJECTs
 *              output_buffer           - Pointer to the user's buffer
 *
 * RETURN:      Status  AE_OK if okay, else a valid acpi_status code.
 *              If the output_buffer is too small, the error will be
 *              AE_BUFFER_OVERFLOW and output_buffer->Length will point
 *              to the size buffer needed.
 *
 * DESCRIPTION: Takes the union acpi_operand_object package and creates a
 *              linked list of PCI interrupt descriptions
 *
 * NOTE: It is the caller's responsibility to ensure that the start of the
 * output buffer is aligned properly (if necessary).
 *
 ******************************************************************************/

acpi_status
acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
				 struct acpi_buffer *output_buffer)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_rs_create_aml_resources
 *
 * PARAMETERS:  resource_list           - Pointer to the resource list buffer
 *              output_buffer           - Where the AML buffer is returned
 *
 * RETURN:      Status  AE_OK if okay, else a valid acpi_status code.
 *              If the output_buffer is too small, the error will be
 *              AE_BUFFER_OVERFLOW and output_buffer->Length will point
 *              to the size buffer needed.
 *
 * DESCRIPTION: Converts a list of device resources to an AML bytestream
 *              to be used as input for the _SRS control method.
 *
 ******************************************************************************/

acpi_status
acpi_rs_create_aml_resources(struct acpi_buffer *resource_list,
			     struct acpi_buffer *output_buffer)
{ … }