rsmemory.c

内核linux2.4.20,可跟rtlinux3.2打补丁 组成实时linux系统,编译内核

	/*
	 * Get Min_base_address (Bytes 4-7)
	 */
	MOVE_UNALIGNED32_TO_32 (&output_struct->data.memory32.min_base_address,
			 buffer);
	buffer += 4;

	/*
	 * Get Max_base_address (Bytes 8-11)
	 */
	MOVE_UNALIGNED32_TO_32 (&output_struct->data.memory32.max_base_address,
			 buffer);
	buffer += 4;

	/*
	 * Get Alignment (Bytes 12-15)
	 */
	MOVE_UNALIGNED32_TO_32 (&output_struct->data.memory32.alignment, buffer);
	buffer += 4;

	/*
	 * Get Range_length (Bytes 16-19)
	 */
	MOVE_UNALIGNED32_TO_32 (&output_struct->data.memory32.range_length, buffer);

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

	/*
	 * Return the final size of the structure
	 */
	*structure_size = struct_size;
	return_ACPI_STATUS (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_rs_fixed_memory32_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
 *
 * 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_fixed_memory32_resource (
	u8                      *byte_stream_buffer,
	u32                     *bytes_consumed,
	u8                      **output_buffer,
	u32                     *structure_size)
{
	u8                      *buffer = byte_stream_buffer;
	acpi_resource           *output_struct = (acpi_resource *) *output_buffer;
	u16                     temp16 = 0;
	u8                      temp8 = 0;
	u32                     struct_size = SIZEOF_RESOURCE (acpi_resource_fixed_mem32);


	FUNCTION_TRACE ("Rs_fixed_memory32_resource");


	/*
	 * Point past the Descriptor to get the number of bytes consumed
	 */
	buffer += 1;
	MOVE_UNALIGNED16_TO_16 (&temp16, buffer);

	buffer += 2;
	*bytes_consumed = temp16 + 3;

	output_struct->id = ACPI_RSTYPE_FIXED_MEM32;

	/*
	 * Check Byte 3 the Read/Write bit
	 */
	temp8 = *buffer;
	buffer += 1;
	output_struct->data.fixed_memory32.read_write_attribute = temp8 & 0x01;

	/*
	 * Get Range_base_address (Bytes 4-7)
	 */
	MOVE_UNALIGNED32_TO_32 (&output_struct->data.fixed_memory32.range_base_address,
			 buffer);
	buffer += 4;

	/*
	 * Get Range_length (Bytes 8-11)
	 */
	MOVE_UNALIGNED32_TO_32 (&output_struct->data.fixed_memory32.range_length,
			 buffer);

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

	/*
	 * Return the final size of the structure
	 */
	*structure_size = struct_size;
	return_ACPI_STATUS (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_rs_memory32_range_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
 *
 * DESCRIPTION: Take the linked list resource structure and fills in the
 *              the appropriate bytes in a byte stream
 *
 ******************************************************************************/

acpi_status
acpi_rs_memory32_range_stream (
	acpi_resource           *linked_list,
	u8                      **output_buffer,
	u32                     *bytes_consumed)
{
	u8                      *buffer = *output_buffer;
	u16                     temp16 = 0;
	u8                      temp8 = 0;


	FUNCTION_TRACE ("Rs_memory32_range_stream");


	/*
	 * The descriptor field is static
	 */
	*buffer = 0x85;
	buffer += 1;

	/*
	 * The length field is static
	 */
	temp16 = 0x11;

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

	/*
	 * Set the Information Byte
	 */
	temp8 = (u8) (linked_list->data.memory32.read_write_attribute & 0x01);
	*buffer = temp8;
	buffer += 1;

	/*
	 * Set the Range minimum base address
	 */
	MOVE_UNALIGNED32_TO_32 (buffer, &linked_list->data.memory32.min_base_address);
	buffer += 4;

	/*
	 * Set the Range maximum base address
	 */
	MOVE_UNALIGNED32_TO_32 (buffer, &linked_list->data.memory32.max_base_address);
	buffer += 4;

	/*
	 * Set the base alignment
	 */
	MOVE_UNALIGNED32_TO_32 (buffer, &linked_list->data.memory32.alignment);
	buffer += 4;

	/*
	 * Set the range length
	 */
	MOVE_UNALIGNED32_TO_32 (buffer, &linked_list->data.memory32.range_length);
	buffer += 4;

	/*
	 * Return the number of bytes consumed in this operation
	 */
	*bytes_consumed = POINTER_DIFF (buffer, *output_buffer);
	return_ACPI_STATUS (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_rs_fixed_memory32_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
 *
 * DESCRIPTION: Take the linked list resource structure and fills in the
 *              the appropriate bytes in a byte stream
 *
 ******************************************************************************/

acpi_status
acpi_rs_fixed_memory32_stream (
	acpi_resource           *linked_list,
	u8                      **output_buffer,
	u32                     *bytes_consumed)
{
	u8                      *buffer = *output_buffer;
	u16                     temp16 = 0;
	u8                      temp8 = 0;


	FUNCTION_TRACE ("Rs_fixed_memory32_stream");


	/*
	 * The descriptor field is static
	 */
	*buffer = 0x86;
	buffer += 1;

	/*
	 * The length field is static
	 */
	temp16 = 0x09;

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

	/*
	 * Set the Information Byte
	 */
	temp8 = (u8) (linked_list->data.fixed_memory32.read_write_attribute & 0x01);
	*buffer = temp8;
	buffer += 1;

	/*
	 * Set the Range base address
	 */
	MOVE_UNALIGNED32_TO_32 (buffer,
			 &linked_list->data.fixed_memory32.range_base_address);
	buffer += 4;

	/*
	 * Set the range length
	 */
	MOVE_UNALIGNED32_TO_32 (buffer,
			 &linked_list->data.fixed_memory32.range_length);
	buffer += 4;

	/*
	 * Return the number of bytes consumed in this operation
	 */
	*bytes_consumed = POINTER_DIFF (buffer, *output_buffer);
	return_ACPI_STATUS (AE_OK);
}