can/rcar/rcar_can.c

225 	struct can_frame *cf;
230 	skb = alloc_can_err_skb(ndev, &cf);
237 			cf->can_id |= CAN_ERR_CRTL;
245 			cf->can_id |= CAN_ERR_BUSERROR | CAN_ERR_PROT;
253 				cf->data[3] = CAN_ERR_PROT_LOC_ACK_DEL;
260 				cf->data[2] |= CAN_ERR_PROT_BIT0;
267 				cf->data[2] |= CAN_ERR_PROT_BIT1;
274 				cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
281 				cf->can_id |= CAN_ERR_ACK;
282 				cf->data[3] = CAN_ERR_PROT_LOC_ACK;
290 				cf->data[2] |= CAN_ERR_PROT_FORM;
297 				cf->data[2] |= CAN_ERR_PROT_STUFF;
312 			cf->data[1] = txerr > rxerr ? CAN_ERR_CRTL_TX_WARNING :
322 			cf->data[1] = txerr > rxerr ? CAN_ERR_CRTL_TX_PASSIVE :
336 			cf->can_id |= CAN_ERR_BUSOFF;
338 		cf->can_id |= CAN_ERR_CNT;
339 		cf->data[6] = txerr;
340 		cf->data[7] = rxerr;
348 			cf->can_id |= CAN_ERR_CRTL;
349 			cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
359 			cf->can_id |= CAN_ERR_PROT;
360 			cf->data[2] |= CAN_ERR_PROT_OVERLOAD;
590 	struct can_frame *cf = (struct can_frame *)skb->data;
596 	if (cf->can_id & CAN_EFF_FLAG)	/* Extended frame format */
597 		data = (cf->can_id & CAN_EFF_MASK) | RCAR_CAN_IDE;
599 		data = (cf->can_id & CAN_SFF_MASK) << RCAR_CAN_SID_SHIFT;
601 	if (cf->can_id & CAN_RTR_FLAG) { /* Remote transmission request */
604 		for (i = 0; i < cf->len; i++)
605 			writeb(cf->data[i],
611 	writeb(cf->len, &priv->regs->mb[RCAR_CAN_TX_FIFO_MBX].dlc);
641 	struct can_frame *cf;
646 	skb = alloc_can_skb(priv->ndev, &cf);
654 		cf->can_id = (data & CAN_EFF_MASK) | CAN_EFF_FLAG;
656 		cf->can_id = (data >> RCAR_CAN_SID_SHIFT) & CAN_SFF_MASK;
659 	cf->len = can_cc_dlc2len(dlc);
661 		cf->can_id |= CAN_RTR_FLAG;
663 		for (dlc = 0; dlc < cf->len; dlc++)
664 			cf->data[dlc] =
667 		stats->rx_bytes += cf->len;