EXT_SCSI_PASSTHRU
EXT_SCSI_PASSTHRU *usp_req;
EXT_SCSI_PASSTHRU sp_cmd;
EXT_SCSI_PASSTHRU *sp_req = &pt_req.sp_cmd;
pld_size = sizeof (EXT_SCSI_PASSTHRU);
usp_req = (EXT_SCSI_PASSTHRU *)(uintptr_t)cmd->RequestAdr;