sof_intel_stream
sof_mailbox_read(sdev, hda_stream->sof_intel_stream.posn_offset, p, sz);
hda_stream->sof_intel_stream.posn_offset = sdev->stream_box.offset + posn_offset;
substream->stream, hda_stream->sof_intel_stream.posn_offset);
struct sof_intel_stream sof_intel_stream;