ATA_RESP_FIS_SIZE
memcpy(&resp->ending_fis[0], r+16, ATA_RESP_FIS_SIZE);
memcpy(dev->sata_dev.fis, resp->ending_fis, ATA_RESP_FIS_SIZE);
u8 fis[ATA_RESP_FIS_SIZE];
u8 ending_fis[ATA_RESP_FIS_SIZE]; /* dev to host or data-in */