sof_intel_dsp_bdl
struct sof_intel_dsp_bdl *bdl;
bdl = (struct sof_intel_dsp_bdl *)hstream->bdl.area;
struct sof_intel_dsp_bdl **bdlp,
struct sof_intel_dsp_bdl *bdl = *bdlp;
(HDA_DSP_BDL_SIZE / sizeof(struct sof_intel_dsp_bdl))