acpi_status
acpi_rs_create_byte_stream (
struct acpi_resource *linked_list_buffer,
struct acpi_buffer *output_buffer)
{
acpi_status status;
acpi_size byte_stream_size_needed = 0;
ACPI_FUNCTION_TRACE ("rs_create_byte_stream");
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "linked_list_buffer = %p\n",
linked_list_buffer));
/*
* Params already validated, so we don't re-validate here
*
* Pass the linked_list_buffer into a module that calculates
* the buffer size needed for the byte stream.
*/
status = acpi_rs_get_byte_stream_length (linked_list_buffer,
&byte_stream_size_needed);
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "byte_stream_size_needed=%X, %s\n",
(u32) byte_stream_size_needed, acpi_format_exception (status)));
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Validate/Allocate/Clear caller buffer */
status = acpi_ut_initialize_buffer (output_buffer, byte_stream_size_needed);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/* Do the conversion */
status = acpi_rs_list_to_byte_stream (linked_list_buffer, byte_stream_size_needed,
output_buffer->pointer);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "output_buffer %p Length %X\n",
output_buffer->pointer, (u32) output_buffer->length));
return_ACPI_STATUS (AE_OK);
}
acpi_status
acpi_rs_create_byte_stream (
acpi_resource *linked_list_buffer,
u8 *output_buffer,
u32 *output_buffer_length)
{
acpi_status status;
u32 byte_stream_size_needed = 0;
FUNCTION_TRACE ("Rs_create_byte_stream");
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Linked_list_buffer = %p\n", linked_list_buffer));
/*
* Params already validated, so we don't re-validate here
*
* Pass the Linked_list_buffer into a module that can calculate
* the buffer size needed for the byte stream.
*/
status = acpi_rs_calculate_byte_stream_length (linked_list_buffer,
&byte_stream_size_needed);
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Byte_stream_size_needed=%X, %s\n",
byte_stream_size_needed, acpi_format_exception (status)));
/*
* Exit with the error passed back
*/
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/*
* If the linked list will fit into the available buffer
* call to fill in the list
*/
if (byte_stream_size_needed <= *output_buffer_length) {
/*
* Zero out the return buffer before proceeding
*/
MEMSET (output_buffer, 0x00, *output_buffer_length);
status = acpi_rs_list_to_byte_stream (linked_list_buffer, byte_stream_size_needed,
&output_buffer);
/*
* Exit with the error passed back
*/
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Output_buffer = %p\n", output_buffer));
}
else {
*output_buffer_length = byte_stream_size_needed;
return_ACPI_STATUS (AE_BUFFER_OVERFLOW);
}
return_ACPI_STATUS (AE_OK);
}
