SID_QUAL
periph_qual = SID_QUAL(inq_buf);
switch (SID_QUAL(inq_data)) {
#define SID_QUAL_IS_VENDOR_UNIQUE(inq_data) ((SID_QUAL(inq_data) & 0x08) != 0)
qual = SID_QUAL(inq);
if (SID_QUAL(inq_data) != SID_QUAL_LU_CONNECTED)
if (SID_QUAL(inq_data) != SID_QUAL_LU_CONNECTED)