280 struct sst_hsw {  struct
286 	struct sst_hsw_ipc_fw_ready fw_ready;  argument
287 	struct sst_hsw_ipc_fw_version version;  argument
295 	struct sst_hsw_ipc_stream_info_reply mixer_info;  argument
296 	enum sst_hsw_volume_curve curve_type;  argument
302 	struct sst_hsw_ipc_dx_reply dx;  argument
315 	struct sst_hsw_log_stream log_stream;  argument
319 	u32 enabled_modules_rtd3;
322 	u32 param_idx_w;	/* write index */
323 	u32 param_idx_r;	/* read index */
324 	u8 param_buf[WAVES_PARAM_LINES][WAVES_PARAM_COUNT];