476 	struct id_and_dlc fifo_header;  in m_can_read_fifo()  local
483 	err = m_can_fifo_read(cdev, fgi, M_CAN_FIFO_ID, &fifo_header, 2);  in m_can_read_fifo()
487 	if (fifo_header.dlc & RX_BUF_FDF)  in m_can_read_fifo()
496 	if (fifo_header.dlc & RX_BUF_FDF)  in m_can_read_fifo()
497 		cf->len = can_fd_dlc2len((fifo_header.dlc >> 16) & 0x0F);  in m_can_read_fifo()
499 		cf->len = can_cc_dlc2len((fifo_header.dlc >> 16) & 0x0F);  in m_can_read_fifo()
501 	if (fifo_header.id & RX_BUF_XTD)  in m_can_read_fifo()
502 		cf->can_id = (fifo_header.id & CAN_EFF_MASK) | CAN_EFF_FLAG;  in m_can_read_fifo()
504 		cf->can_id = (fifo_header.id >> 18) & CAN_SFF_MASK;  in m_can_read_fifo()
506 	if (fifo_header.id & RX_BUF_ESI) {  in m_can_read_fifo()
511 	if (!(fifo_header.dlc & RX_BUF_FDF) && (fifo_header.id & RX_BUF_RTR)) {  in m_can_read_fifo()
514 		if (fifo_header.dlc & RX_BUF_BRS)  in m_can_read_fifo()
529 	timestamp = FIELD_GET(RX_BUF_RXTS_MASK, fifo_header.dlc);  in m_can_read_fifo()
1591 	struct id_and_dlc fifo_header;  in m_can_tx_handler()  local
1601 		fifo_header.id = cf->can_id & CAN_EFF_MASK;  in m_can_tx_handler()
1602 		fifo_header.id |= TX_BUF_XTD;  in m_can_tx_handler()
1604 		fifo_header.id = ((cf->can_id & CAN_SFF_MASK) << 18);  in m_can_tx_handler()
1608 		fifo_header.id |= TX_BUF_RTR;  in m_can_tx_handler()
1613 		fifo_header.dlc = can_fd_len2dlc(cf->len) << 16;  in m_can_tx_handler()
1616 		err = m_can_fifo_write(cdev, 0, M_CAN_FIFO_ID, &fifo_header, 2);  in m_can_tx_handler()
1681 		fifo_header.dlc = FIELD_PREP(TX_BUF_MM_MASK, putidx) |  in m_can_tx_handler()
1684 		err = m_can_fifo_write(cdev, putidx, M_CAN_FIFO_ID, &fifo_header, 2);  in m_can_tx_handler()