Symbol: USCSIIOC
usr/src/uts/common/sys/scsi/impl/uscsi.h
199
#define USCSICMD (USCSIIOC|201) /* user scsi command */
usr/src/uts/common/sys/scsi/impl/uscsi.h
200
#define USCSIMAXXFER (USCSIIOC|202) /* get max transfer size */