rsmisc.c

winNT技术操作系统,国外开放的原代码和LIUX一样

		MOVE_UNALIGNED16_TO_16 (buffer, &temp16);
		buffer += 2;
	}

	else {
		/*
		 * Small Item
		 */

		/*
		 * Set the descriptor field
		 */
		temp8 = 0x70;
		temp8 |= linked_list->data.vendor_specific.length;

		*buffer = temp8;
		buffer += 1;
	}

	/*
	 * Loop through all of the Vendor Specific fields
	 */
	for (index = 0; index < linked_list->data.vendor_specific.length; index++) {
		temp8 = linked_list->data.vendor_specific.reserved[index];

		*buffer = temp8;
		buffer += 1;
	}

	/*
	 * Return the number of bytes consumed in this operation
	 */
	*bytes_consumed = (u32) ((NATIVE_UINT) buffer -
			   (NATIVE_UINT) *output_buffer);

	return (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_rs_start_dependent_functions_resource
 *
 * PARAMETERS:  Byte_stream_buffer      - Pointer to the resource input byte
 *                                          stream
 *              Bytes_consumed          - u32 pointer that is filled with
 *                                          the number of bytes consumed from
 *                                          the Byte_stream_buffer
 *              Output_buffer           - Pointer to the user's return buffer
 *              Structure_size          - u32 pointer that is filled with
 *                                          the number of bytes in the filled
 *                                          in structure
 *
 * RETURN:      Status  AE_OK if okay, else a valid ACPI_STATUS code
 *
 * DESCRIPTION: Take the resource byte stream and fill out the appropriate
 *                  structure pointed to by the Output_buffer. Return the
 *                  number of bytes consumed from the byte stream.
 *
 ******************************************************************************/

ACPI_STATUS
acpi_rs_start_dependent_functions_resource (
	u8                      *byte_stream_buffer,
	u32                     *bytes_consumed,
	u8                      **output_buffer,
	u32                     *structure_size)
{
	u8                      *buffer = byte_stream_buffer;
	RESOURCE                *output_struct = (RESOURCE *) * output_buffer;
	u8                      temp8 = 0;
	u32                     struct_size =
			  sizeof(START_DEPENDENT_FUNCTIONS_RESOURCE) +
			  RESOURCE_LENGTH_NO_DATA;


	/*
	 * The number of bytes consumed are contained in the descriptor (Bits:0-1)
	 */
	temp8 = *buffer;

	*bytes_consumed = (temp8 & 0x01) + 1;

	output_struct->id = start_dependent_functions;

	/*
	 * Point to Byte 1 if it is used
	 */
	if (2 == *bytes_consumed) {
		buffer += 1;
		temp8 = *buffer;

		/*
		 * Check Compatibility priority
		 */
		output_struct->data.start_dependent_functions.compatibility_priority =
				temp8 & 0x03;

		if (3 == output_struct->data.start_dependent_functions.compatibility_priority) {
			return (AE_AML_ERROR);
		}

		/*
		 * Check Performance/Robustness preference
		 */
		output_struct->data.start_dependent_functions.performance_robustness =
				(temp8 >> 2) & 0x03;

		if (3 == output_struct->data.start_dependent_functions.performance_robustness) {
			return (AE_AML_ERROR);
		}
	}

	else {
		output_struct->data.start_dependent_functions.compatibility_priority =
				ACCEPTABLE_CONFIGURATION;

		output_struct->data.start_dependent_functions.performance_robustness =
				ACCEPTABLE_CONFIGURATION;
	}

	/*
	 * Set the Length parameter
	 */
	output_struct->length = struct_size;

	/*
	 * Return the final size of the structure
	 */
	*structure_size = struct_size;

	return (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_rs_end_dependent_functions_resource
 *
 * PARAMETERS:  Byte_stream_buffer      - Pointer to the resource input byte
 *                                          stream
 *              Bytes_consumed          - u32 pointer that is filled with
 *                                          the number of bytes consumed from
 *                                          the Byte_stream_buffer
 *              Output_buffer           - Pointer to the user's return buffer
 *              Structure_size          - u32 pointer that is filled with
 *                                          the number of bytes in the filled
 *                                          in structure
 *
 * RETURN:      Status  AE_OK if okay, else a valid ACPI_STATUS code
 *
 * DESCRIPTION: Take the resource byte stream and fill out the appropriate
 *                  structure pointed to by the Output_buffer. Return the
 *                  number of bytes consumed from the byte stream.
 *
 ******************************************************************************/

ACPI_STATUS
acpi_rs_end_dependent_functions_resource (
	u8                      *byte_stream_buffer,
	u32                     *bytes_consumed,
	u8                      **output_buffer,
	u32                     *structure_size)
{
	RESOURCE                *output_struct = (RESOURCE *) * output_buffer;
	u32                     struct_size = RESOURCE_LENGTH;


	/*
	 * The number of bytes consumed is static
	 */
	*bytes_consumed = 1;

	/*
	 *  Fill out the structure
	 */
	output_struct->id = end_dependent_functions;

	/*
	 * Set the Length parameter
	 */
	output_struct->length = struct_size;

	/*
	 * Return the final size of the structure
	 */
	*structure_size = struct_size;

	return (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_rs_start_dependent_functions_stream
 *
 * PARAMETERS:  Linked_list             - Pointer to the resource linked list
 *              Output_buffer           - Pointer to the user's return buffer
 *              Bytes_consumed          - u32 pointer that is filled with
 *                                          the number of bytes of the
 *                                          Output_buffer used
 *
 * RETURN:      Status  AE_OK if okay, else a valid ACPI_STATUS code
 *
 * DESCRIPTION: Take the linked list resource structure and fills in the
 *                  the appropriate bytes in a byte stream
 *
 ******************************************************************************/

ACPI_STATUS
acpi_rs_start_dependent_functions_stream (
	RESOURCE                *linked_list,
	u8                      **output_buffer,
	u32                     *bytes_consumed)
{
	u8                      *buffer = *output_buffer;
	u8                      temp8 = 0;


	/*
	 * The descriptor field is set based upon whether a byte is needed
	 *  to contain Priority data.
	 */
	if (ACCEPTABLE_CONFIGURATION ==
			linked_list->data.start_dependent_functions.compatibility_priority &&
		ACCEPTABLE_CONFIGURATION ==
			linked_list->data.start_dependent_functions.performance_robustness) {
		*buffer = 0x30;
	}
	else {
		*buffer = 0x31;
		buffer += 1;

		/*
		 * Set the Priority Byte Definition
		 */
		temp8 = 0;
		temp8 = (u8)
			((linked_list->data.start_dependent_functions.performance_robustness &
			  0x03) << 2);
		temp8 |=
			(linked_list->data.start_dependent_functions.compatibility_priority &
			 0x03);

		*buffer = temp8;
	}

	buffer += 1;

	/*
	 * Return the number of bytes consumed in this operation
	 */
	*bytes_consumed = (u32) ((NATIVE_UINT) buffer -
			   (NATIVE_UINT) *output_buffer);

	return (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_rs_end_dependent_functions_stream
 *
 * PARAMETERS:  Linked_list             - Pointer to the resource linked list
 *              Output_buffer           - Pointer to the user's return buffer
 *              Bytes_consumed          - u32 pointer that is filled with
 *                                          the number of bytes of the
 *                                          Output_buffer used
 *
 * RETURN:      Status  AE_OK if okay, else a valid ACPI_STATUS code
 *
 * DESCRIPTION: Take the linked list resource structure and fills in the
 *                  the appropriate bytes in a byte stream
 *
 ******************************************************************************/

ACPI_STATUS
acpi_rs_end_dependent_functions_stream (
	RESOURCE                *linked_list,
	u8                      **output_buffer,
	u32                     *bytes_consumed
	)
{
	u8                      *buffer = *output_buffer;


	/*
	 * The descriptor field is static
	 */
	*buffer = 0x38;
	buffer += 1;

	/*
	 * Return the number of bytes consumed in this operation
	 */
	*bytes_consumed = (u32) ((NATIVE_UINT) buffer -
			   (NATIVE_UINT) *output_buffer);

	return (AE_OK);
}