Lines Matching full:can
13 #include <linux/can/dev.h>
21 MODULE_DESCRIPTION("CAN driver for Kvaser CAN/PCIe devices");
47 /* Kvaser KCAN CAN controller registers */
184 /* Controller got CAN FD capability */
196 /* CAN FD non-ISO */
202 /* Classic CAN mode */
262 struct can_priv can; member
278 struct kvaser_pciefd_can *can[KVASER_PCIEFD_MAX_CAN_CHANNELS]; member
493 static void kvaser_pciefd_request_status(struct kvaser_pciefd_can *can) in kvaser_pciefd_request_status() argument
498 cmd |= ++can->cmd_seq << KVASER_PCIEFD_KCAN_CMD_SEQ_SHIFT; in kvaser_pciefd_request_status()
499 iowrite32(cmd, can->reg_base + KVASER_PCIEFD_KCAN_CMD_REG); in kvaser_pciefd_request_status()
502 static void kvaser_pciefd_enable_err_gen(struct kvaser_pciefd_can *can) in kvaser_pciefd_enable_err_gen() argument
507 spin_lock_irqsave(&can->lock, irq); in kvaser_pciefd_enable_err_gen()
508 mode = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_enable_err_gen()
511 iowrite32(mode, can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_enable_err_gen()
513 spin_unlock_irqrestore(&can->lock, irq); in kvaser_pciefd_enable_err_gen()
516 static void kvaser_pciefd_disable_err_gen(struct kvaser_pciefd_can *can) in kvaser_pciefd_disable_err_gen() argument
521 spin_lock_irqsave(&can->lock, irq); in kvaser_pciefd_disable_err_gen()
522 mode = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_disable_err_gen()
524 iowrite32(mode, can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_disable_err_gen()
525 spin_unlock_irqrestore(&can->lock, irq); in kvaser_pciefd_disable_err_gen()
528 static int kvaser_pciefd_set_tx_irq(struct kvaser_pciefd_can *can) in kvaser_pciefd_set_tx_irq() argument
538 iowrite32(msk, can->reg_base + KVASER_PCIEFD_KCAN_IEN_REG); in kvaser_pciefd_set_tx_irq()
543 static void kvaser_pciefd_setup_controller(struct kvaser_pciefd_can *can) in kvaser_pciefd_setup_controller() argument
548 spin_lock_irqsave(&can->lock, irq); in kvaser_pciefd_setup_controller()
550 mode = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_setup_controller()
551 if (can->can.ctrlmode & CAN_CTRLMODE_FD) { in kvaser_pciefd_setup_controller()
553 if (can->can.ctrlmode & CAN_CTRLMODE_FD_NON_ISO) in kvaser_pciefd_setup_controller()
562 if (can->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) in kvaser_pciefd_setup_controller()
572 iowrite32(mode, can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_setup_controller()
574 spin_unlock_irqrestore(&can->lock, irq); in kvaser_pciefd_setup_controller()
577 static void kvaser_pciefd_start_controller_flush(struct kvaser_pciefd_can *can) in kvaser_pciefd_start_controller_flush() argument
582 spin_lock_irqsave(&can->lock, irq); in kvaser_pciefd_start_controller_flush()
583 iowrite32(-1, can->reg_base + KVASER_PCIEFD_KCAN_IRQ_REG); in kvaser_pciefd_start_controller_flush()
585 can->reg_base + KVASER_PCIEFD_KCAN_IEN_REG); in kvaser_pciefd_start_controller_flush()
587 status = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_STAT_REG); in kvaser_pciefd_start_controller_flush()
593 cmd |= ++can->cmd_seq << KVASER_PCIEFD_KCAN_CMD_SEQ_SHIFT; in kvaser_pciefd_start_controller_flush()
594 iowrite32(cmd, can->reg_base + KVASER_PCIEFD_KCAN_CMD_REG); in kvaser_pciefd_start_controller_flush()
599 mode = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_start_controller_flush()
601 iowrite32(mode, can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_start_controller_flush()
604 spin_unlock_irqrestore(&can->lock, irq); in kvaser_pciefd_start_controller_flush()
607 static int kvaser_pciefd_bus_on(struct kvaser_pciefd_can *can) in kvaser_pciefd_bus_on() argument
612 del_timer(&can->bec_poll_timer); in kvaser_pciefd_bus_on()
614 if (!completion_done(&can->flush_comp)) in kvaser_pciefd_bus_on()
615 kvaser_pciefd_start_controller_flush(can); in kvaser_pciefd_bus_on()
617 if (!wait_for_completion_timeout(&can->flush_comp, in kvaser_pciefd_bus_on()
619 netdev_err(can->can.dev, "Timeout during bus on flush\n"); in kvaser_pciefd_bus_on()
623 spin_lock_irqsave(&can->lock, irq); in kvaser_pciefd_bus_on()
624 iowrite32(0, can->reg_base + KVASER_PCIEFD_KCAN_IEN_REG); in kvaser_pciefd_bus_on()
625 iowrite32(-1, can->reg_base + KVASER_PCIEFD_KCAN_IRQ_REG); in kvaser_pciefd_bus_on()
628 can->reg_base + KVASER_PCIEFD_KCAN_IEN_REG); in kvaser_pciefd_bus_on()
630 mode = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_bus_on()
632 iowrite32(mode, can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_bus_on()
633 spin_unlock_irqrestore(&can->lock, irq); in kvaser_pciefd_bus_on()
635 if (!wait_for_completion_timeout(&can->start_comp, in kvaser_pciefd_bus_on()
637 netdev_err(can->can.dev, "Timeout during bus on reset\n"); in kvaser_pciefd_bus_on()
641 iowrite32(0, can->reg_base + KVASER_PCIEFD_KCAN_IEN_REG); in kvaser_pciefd_bus_on()
642 iowrite32(-1, can->reg_base + KVASER_PCIEFD_KCAN_IRQ_REG); in kvaser_pciefd_bus_on()
644 kvaser_pciefd_set_tx_irq(can); in kvaser_pciefd_bus_on()
645 kvaser_pciefd_setup_controller(can); in kvaser_pciefd_bus_on()
647 can->can.state = CAN_STATE_ERROR_ACTIVE; in kvaser_pciefd_bus_on()
648 netif_wake_queue(can->can.dev); in kvaser_pciefd_bus_on()
649 can->bec.txerr = 0; in kvaser_pciefd_bus_on()
650 can->bec.rxerr = 0; in kvaser_pciefd_bus_on()
651 can->err_rep_cnt = 0; in kvaser_pciefd_bus_on()
656 static void kvaser_pciefd_pwm_stop(struct kvaser_pciefd_can *can) in kvaser_pciefd_pwm_stop() argument
662 spin_lock_irqsave(&can->lock, irq); in kvaser_pciefd_pwm_stop()
663 pwm_ctrl = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_PWM_REG); in kvaser_pciefd_pwm_stop()
668 iowrite32(pwm_ctrl, can->reg_base + KVASER_PCIEFD_KCAN_PWM_REG); in kvaser_pciefd_pwm_stop()
669 spin_unlock_irqrestore(&can->lock, irq); in kvaser_pciefd_pwm_stop()
672 static void kvaser_pciefd_pwm_start(struct kvaser_pciefd_can *can) in kvaser_pciefd_pwm_start() argument
678 kvaser_pciefd_pwm_stop(can); in kvaser_pciefd_pwm_start()
679 spin_lock_irqsave(&can->lock, irq); in kvaser_pciefd_pwm_start()
682 top = can->kv_pcie->bus_freq / (2 * 500000) - 1; in kvaser_pciefd_pwm_start()
686 iowrite32(pwm_ctrl, can->reg_base + KVASER_PCIEFD_KCAN_PWM_REG); in kvaser_pciefd_pwm_start()
692 iowrite32(pwm_ctrl, can->reg_base + KVASER_PCIEFD_KCAN_PWM_REG); in kvaser_pciefd_pwm_start()
693 spin_unlock_irqrestore(&can->lock, irq); in kvaser_pciefd_pwm_start()
699 struct kvaser_pciefd_can *can = netdev_priv(netdev); in kvaser_pciefd_open() local
705 err = kvaser_pciefd_bus_on(can); in kvaser_pciefd_open()
716 struct kvaser_pciefd_can *can = netdev_priv(netdev); in kvaser_pciefd_stop() local
720 if (!completion_done(&can->flush_comp)) in kvaser_pciefd_stop()
721 kvaser_pciefd_start_controller_flush(can); in kvaser_pciefd_stop()
723 if (!wait_for_completion_timeout(&can->flush_comp, in kvaser_pciefd_stop()
725 netdev_err(can->can.dev, "Timeout during stop\n"); in kvaser_pciefd_stop()
728 iowrite32(0, can->reg_base + KVASER_PCIEFD_KCAN_IEN_REG); in kvaser_pciefd_stop()
729 del_timer(&can->bec_poll_timer); in kvaser_pciefd_stop()
731 can->can.state = CAN_STATE_STOPPED; in kvaser_pciefd_stop()
738 struct kvaser_pciefd_can *can, in kvaser_pciefd_prepare_tx_packet() argument
743 int seq = can->echo_idx; in kvaser_pciefd_prepare_tx_packet()
747 if (can->can.ctrlmode & CAN_CTRLMODE_ONE_SHOT) in kvaser_pciefd_prepare_tx_packet()
779 struct kvaser_pciefd_can *can = netdev_priv(netdev); in kvaser_pciefd_start_xmit() local
788 nwords = kvaser_pciefd_prepare_tx_packet(&packet, can, skb); in kvaser_pciefd_start_xmit()
790 spin_lock_irqsave(&can->echo_lock, irq_flags); in kvaser_pciefd_start_xmit()
793 can_put_echo_skb(skb, netdev, can->echo_idx); in kvaser_pciefd_start_xmit()
796 can->echo_idx = (can->echo_idx + 1) % can->can.echo_skb_max; in kvaser_pciefd_start_xmit()
800 can->reg_base + KVASER_PCIEFD_KCAN_FIFO_REG); in kvaser_pciefd_start_xmit()
802 can->reg_base + KVASER_PCIEFD_KCAN_FIFO_REG); in kvaser_pciefd_start_xmit()
808 iowrite32_rep(can->reg_base + in kvaser_pciefd_start_xmit()
812 __raw_writel(data_last, can->reg_base + in kvaser_pciefd_start_xmit()
816 __raw_writel(0, can->reg_base + in kvaser_pciefd_start_xmit()
820 count = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_TX_NPACKETS_REG); in kvaser_pciefd_start_xmit()
825 can->can.echo_skb[can->echo_idx]) in kvaser_pciefd_start_xmit()
828 spin_unlock_irqrestore(&can->echo_lock, irq_flags); in kvaser_pciefd_start_xmit()
833 static int kvaser_pciefd_set_bittiming(struct kvaser_pciefd_can *can, bool data) in kvaser_pciefd_set_bittiming() argument
841 bt = &can->can.data_bittiming; in kvaser_pciefd_set_bittiming()
843 bt = &can->can.bittiming; in kvaser_pciefd_set_bittiming()
852 spin_lock_irqsave(&can->lock, irq_flags); in kvaser_pciefd_set_bittiming()
853 mode = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_set_bittiming()
857 can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_set_bittiming()
859 /* Can only set bittiming if in reset mode */ in kvaser_pciefd_set_bittiming()
860 ret = readl_poll_timeout(can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG, in kvaser_pciefd_set_bittiming()
865 spin_unlock_irqrestore(&can->lock, irq_flags); in kvaser_pciefd_set_bittiming()
870 iowrite32(btrn, can->reg_base + KVASER_PCIEFD_KCAN_BTRD_REG); in kvaser_pciefd_set_bittiming()
872 iowrite32(btrn, can->reg_base + KVASER_PCIEFD_KCAN_BTRN_REG); in kvaser_pciefd_set_bittiming()
875 iowrite32(mode, can->reg_base + KVASER_PCIEFD_KCAN_MODE_REG); in kvaser_pciefd_set_bittiming()
877 spin_unlock_irqrestore(&can->lock, irq_flags); in kvaser_pciefd_set_bittiming()
893 struct kvaser_pciefd_can *can = netdev_priv(ndev); in kvaser_pciefd_set_mode() local
898 if (!can->can.restart_ms) in kvaser_pciefd_set_mode()
899 ret = kvaser_pciefd_bus_on(can); in kvaser_pciefd_set_mode()
911 struct kvaser_pciefd_can *can = netdev_priv(ndev); in kvaser_pciefd_get_berr_counter() local
913 bec->rxerr = can->bec.rxerr; in kvaser_pciefd_get_berr_counter()
914 bec->txerr = can->bec.txerr; in kvaser_pciefd_get_berr_counter()
920 struct kvaser_pciefd_can *can = from_timer(can, data, bec_poll_timer); in kvaser_pciefd_bec_poll_timer() local
922 kvaser_pciefd_enable_err_gen(can); in kvaser_pciefd_bec_poll_timer()
923 kvaser_pciefd_request_status(can); in kvaser_pciefd_bec_poll_timer()
924 can->err_rep_cnt = 0; in kvaser_pciefd_bec_poll_timer()
940 struct kvaser_pciefd_can *can; in kvaser_pciefd_setup_can_ctrls() local
948 can = netdev_priv(netdev); in kvaser_pciefd_setup_can_ctrls()
950 can->reg_base = pcie->reg_base + KVASER_PCIEFD_KCAN0_BASE + in kvaser_pciefd_setup_can_ctrls()
953 can->kv_pcie = pcie; in kvaser_pciefd_setup_can_ctrls()
954 can->cmd_seq = 0; in kvaser_pciefd_setup_can_ctrls()
955 can->err_rep_cnt = 0; in kvaser_pciefd_setup_can_ctrls()
956 can->bec.txerr = 0; in kvaser_pciefd_setup_can_ctrls()
957 can->bec.rxerr = 0; in kvaser_pciefd_setup_can_ctrls()
959 init_completion(&can->start_comp); in kvaser_pciefd_setup_can_ctrls()
960 init_completion(&can->flush_comp); in kvaser_pciefd_setup_can_ctrls()
961 timer_setup(&can->bec_poll_timer, kvaser_pciefd_bec_poll_timer, in kvaser_pciefd_setup_can_ctrls()
965 iowrite32(0, can->reg_base + KVASER_PCIEFD_KCAN_BUS_LOAD_REG); in kvaser_pciefd_setup_can_ctrls()
967 tx_npackets = ioread32(can->reg_base + in kvaser_pciefd_setup_can_ctrls()
978 can->can.clock.freq = pcie->freq; in kvaser_pciefd_setup_can_ctrls()
979 can->can.echo_skb_max = KVASER_PCIEFD_CAN_TX_MAX_COUNT; in kvaser_pciefd_setup_can_ctrls()
980 can->echo_idx = 0; in kvaser_pciefd_setup_can_ctrls()
981 spin_lock_init(&can->echo_lock); in kvaser_pciefd_setup_can_ctrls()
982 spin_lock_init(&can->lock); in kvaser_pciefd_setup_can_ctrls()
983 can->can.bittiming_const = &kvaser_pciefd_bittiming_const; in kvaser_pciefd_setup_can_ctrls()
984 can->can.data_bittiming_const = &kvaser_pciefd_bittiming_const; in kvaser_pciefd_setup_can_ctrls()
986 can->can.do_set_bittiming = kvaser_pciefd_set_nominal_bittiming; in kvaser_pciefd_setup_can_ctrls()
987 can->can.do_set_data_bittiming = in kvaser_pciefd_setup_can_ctrls()
990 can->can.do_set_mode = kvaser_pciefd_set_mode; in kvaser_pciefd_setup_can_ctrls()
991 can->can.do_get_berr_counter = kvaser_pciefd_get_berr_counter; in kvaser_pciefd_setup_can_ctrls()
993 can->can.ctrlmode_supported = CAN_CTRLMODE_LISTENONLY | in kvaser_pciefd_setup_can_ctrls()
997 status = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_STAT_REG); in kvaser_pciefd_setup_can_ctrls()
1000 "CAN FD not supported as expected %d\n", i); in kvaser_pciefd_setup_can_ctrls()
1007 can->can.ctrlmode_supported |= CAN_CTRLMODE_ONE_SHOT; in kvaser_pciefd_setup_can_ctrls()
1013 iowrite32(-1, can->reg_base + KVASER_PCIEFD_KCAN_IRQ_REG); in kvaser_pciefd_setup_can_ctrls()
1015 can->reg_base + KVASER_PCIEFD_KCAN_IEN_REG); in kvaser_pciefd_setup_can_ctrls()
1017 pcie->can[i] = can; in kvaser_pciefd_setup_can_ctrls()
1018 kvaser_pciefd_pwm_start(can); in kvaser_pciefd_setup_can_ctrls()
1029 int err = register_candev(pcie->can[i]->can.dev); in kvaser_pciefd_reg_candev()
1036 unregister_candev(pcie->can[j]->can.dev); in kvaser_pciefd_reg_candev()
1176 priv = &pcie->can[ch_id]->can; in kvaser_pciefd_handle_data_packet()
1222 static void kvaser_pciefd_change_state(struct kvaser_pciefd_can *can, in kvaser_pciefd_change_state() argument
1228 can_change_state(can->can.dev, cf, tx_state, rx_state); in kvaser_pciefd_change_state()
1231 struct net_device *ndev = can->can.dev; in kvaser_pciefd_change_state()
1234 spin_lock_irqsave(&can->lock, irq_flags); in kvaser_pciefd_change_state()
1235 netif_stop_queue(can->can.dev); in kvaser_pciefd_change_state()
1236 spin_unlock_irqrestore(&can->lock, irq_flags); in kvaser_pciefd_change_state()
1238 /* Prevent CAN controller from auto recover from bus off */ in kvaser_pciefd_change_state()
1239 if (!can->can.restart_ms) { in kvaser_pciefd_change_state()
1240 kvaser_pciefd_start_controller_flush(can); in kvaser_pciefd_change_state()
1272 static int kvaser_pciefd_rx_error_frame(struct kvaser_pciefd_can *can, in kvaser_pciefd_rx_error_frame() argument
1277 struct net_device *ndev = can->can.dev; in kvaser_pciefd_rx_error_frame()
1283 old_state = can->can.state; in kvaser_pciefd_rx_error_frame()
1294 kvaser_pciefd_change_state(can, cf, new_state, tx_state, in kvaser_pciefd_rx_error_frame()
1299 can->can.restart_ms) { in kvaser_pciefd_rx_error_frame()
1300 can->can.can_stats.restarts++; in kvaser_pciefd_rx_error_frame()
1306 can->err_rep_cnt++; in kvaser_pciefd_rx_error_frame()
1307 can->can.can_stats.bus_error++; in kvaser_pciefd_rx_error_frame()
1313 can->bec.txerr = bec.txerr; in kvaser_pciefd_rx_error_frame()
1314 can->bec.rxerr = bec.rxerr; in kvaser_pciefd_rx_error_frame()
1324 can->kv_pcie->freq_to_ticks_div)); in kvaser_pciefd_rx_error_frame()
1340 struct kvaser_pciefd_can *can; in kvaser_pciefd_handle_error_packet() local
1346 can = pcie->can[ch_id]; in kvaser_pciefd_handle_error_packet()
1348 kvaser_pciefd_rx_error_frame(can, p); in kvaser_pciefd_handle_error_packet()
1349 if (can->err_rep_cnt >= KVASER_PCIEFD_MAX_ERR_REP) in kvaser_pciefd_handle_error_packet()
1351 kvaser_pciefd_disable_err_gen(can); in kvaser_pciefd_handle_error_packet()
1353 mod_timer(&can->bec_poll_timer, KVASER_PCIEFD_BEC_POLL_FREQ); in kvaser_pciefd_handle_error_packet()
1357 static int kvaser_pciefd_handle_status_resp(struct kvaser_pciefd_can *can, in kvaser_pciefd_handle_status_resp() argument
1363 old_state = can->can.state; in kvaser_pciefd_handle_status_resp()
1372 struct net_device *ndev = can->can.dev; in kvaser_pciefd_handle_status_resp()
1385 kvaser_pciefd_change_state(can, cf, new_state, tx_state, in kvaser_pciefd_handle_status_resp()
1390 can->can.restart_ms) { in kvaser_pciefd_handle_status_resp()
1391 can->can.can_stats.restarts++; in kvaser_pciefd_handle_status_resp()
1398 can->kv_pcie->freq_to_ticks_div)); in kvaser_pciefd_handle_status_resp()
1405 can->bec.txerr = bec.txerr; in kvaser_pciefd_handle_status_resp()
1406 can->bec.rxerr = bec.rxerr; in kvaser_pciefd_handle_status_resp()
1409 mod_timer(&can->bec_poll_timer, KVASER_PCIEFD_BEC_POLL_FREQ); in kvaser_pciefd_handle_status_resp()
1417 struct kvaser_pciefd_can *can; in kvaser_pciefd_handle_status_packet() local
1425 can = pcie->can[ch_id]; in kvaser_pciefd_handle_status_packet()
1427 status = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_STAT_REG); in kvaser_pciefd_handle_status_packet()
1439 can->reg_base + KVASER_PCIEFD_KCAN_IRQ_REG); in kvaser_pciefd_handle_status_packet()
1441 cmd |= ++can->cmd_seq << KVASER_PCIEFD_KCAN_CMD_SEQ_SHIFT; in kvaser_pciefd_handle_status_packet()
1442 iowrite32(cmd, can->reg_base + KVASER_PCIEFD_KCAN_CMD_REG); in kvaser_pciefd_handle_status_packet()
1448 u8 count = ioread32(can->reg_base + in kvaser_pciefd_handle_status_packet()
1453 can->reg_base + KVASER_PCIEFD_KCAN_CTRL_REG); in kvaser_pciefd_handle_status_packet()
1457 kvaser_pciefd_handle_status_resp(can, p); in kvaser_pciefd_handle_status_packet()
1458 if (can->can.state != CAN_STATE_BUS_OFF && in kvaser_pciefd_handle_status_packet()
1459 can->can.state != CAN_STATE_ERROR_ACTIVE) { in kvaser_pciefd_handle_status_packet()
1460 mod_timer(&can->bec_poll_timer, in kvaser_pciefd_handle_status_packet()
1466 if (!completion_done(&can->start_comp)) in kvaser_pciefd_handle_status_packet()
1467 complete(&can->start_comp); in kvaser_pciefd_handle_status_packet()
1476 struct kvaser_pciefd_can *can; in kvaser_pciefd_handle_eack_packet() local
1482 can = pcie->can[ch_id]; in kvaser_pciefd_handle_eack_packet()
1486 u8 count = ioread32(can->reg_base + in kvaser_pciefd_handle_eack_packet()
1491 can->reg_base + KVASER_PCIEFD_KCAN_CTRL_REG); in kvaser_pciefd_handle_eack_packet()
1494 int dlc = can_get_echo_skb(can->can.dev, echo_idx); in kvaser_pciefd_handle_eack_packet()
1495 struct net_device_stats *stats = &can->can.dev->stats; in kvaser_pciefd_handle_eack_packet()
1500 if (netif_queue_stopped(can->can.dev)) in kvaser_pciefd_handle_eack_packet()
1501 netif_wake_queue(can->can.dev); in kvaser_pciefd_handle_eack_packet()
1507 static void kvaser_pciefd_handle_nack_packet(struct kvaser_pciefd_can *can, in kvaser_pciefd_handle_nack_packet() argument
1511 struct net_device_stats *stats = &can->can.dev->stats; in kvaser_pciefd_handle_nack_packet()
1514 skb = alloc_can_err_skb(can->can.dev, &cf); in kvaser_pciefd_handle_nack_packet()
1520 can->can.can_stats.arbitration_lost++; in kvaser_pciefd_handle_nack_packet()
1532 netdev_warn(can->can.dev, "No memory left for err_skb\n"); in kvaser_pciefd_handle_nack_packet()
1539 struct kvaser_pciefd_can *can; in kvaser_pciefd_handle_ack_packet() local
1546 can = pcie->can[ch_id]; in kvaser_pciefd_handle_ack_packet()
1552 kvaser_pciefd_handle_nack_packet(can, p); in kvaser_pciefd_handle_ack_packet()
1557 netdev_dbg(can->can.dev, "Packet was flushed\n"); in kvaser_pciefd_handle_ack_packet()
1560 int dlc = can_get_echo_skb(can->can.dev, echo_idx); in kvaser_pciefd_handle_ack_packet()
1561 u8 count = ioread32(can->reg_base + in kvaser_pciefd_handle_ack_packet()
1565 netif_queue_stopped(can->can.dev)) in kvaser_pciefd_handle_ack_packet()
1566 netif_wake_queue(can->can.dev); in kvaser_pciefd_handle_ack_packet()
1569 struct net_device_stats *stats = &can->can.dev->stats; in kvaser_pciefd_handle_ack_packet()
1582 struct kvaser_pciefd_can *can; in kvaser_pciefd_handle_eflush_packet() local
1588 can = pcie->can[ch_id]; in kvaser_pciefd_handle_eflush_packet()
1590 if (!completion_done(&can->flush_comp)) in kvaser_pciefd_handle_eflush_packet()
1591 complete(&can->flush_comp); in kvaser_pciefd_handle_eflush_packet()
1724 static int kvaser_pciefd_transmit_irq(struct kvaser_pciefd_can *can) in kvaser_pciefd_transmit_irq() argument
1726 u32 irq = ioread32(can->reg_base + KVASER_PCIEFD_KCAN_IRQ_REG); in kvaser_pciefd_transmit_irq()
1729 netdev_err(can->can.dev, "Tx FIFO overflow\n"); in kvaser_pciefd_transmit_irq()
1732 netdev_err(can->can.dev, in kvaser_pciefd_transmit_irq()
1736 netdev_err(can->can.dev, "CAN FD frame in CAN mode\n"); in kvaser_pciefd_transmit_irq()
1739 netdev_err(can->can.dev, "Rx FIFO overflow\n"); in kvaser_pciefd_transmit_irq()
1741 iowrite32(irq, can->reg_base + KVASER_PCIEFD_KCAN_IRQ_REG); in kvaser_pciefd_transmit_irq()
1760 if (!pcie->can[i]) { in kvaser_pciefd_irq_handler()
1768 kvaser_pciefd_transmit_irq(pcie->can[i]); in kvaser_pciefd_irq_handler()
1778 struct kvaser_pciefd_can *can; in kvaser_pciefd_teardown_can_ctrls() local
1781 can = pcie->can[i]; in kvaser_pciefd_teardown_can_ctrls()
1782 if (can) { in kvaser_pciefd_teardown_can_ctrls()
1784 can->reg_base + KVASER_PCIEFD_KCAN_IEN_REG); in kvaser_pciefd_teardown_can_ctrls()
1785 kvaser_pciefd_pwm_stop(can); in kvaser_pciefd_teardown_can_ctrls()
1786 free_candev(can->can.dev); in kvaser_pciefd_teardown_can_ctrls()
1887 struct kvaser_pciefd_can *can; in kvaser_pciefd_remove_all_ctrls() local
1891 can = pcie->can[i]; in kvaser_pciefd_remove_all_ctrls()
1892 if (can) { in kvaser_pciefd_remove_all_ctrls()
1894 can->reg_base + KVASER_PCIEFD_KCAN_IEN_REG); in kvaser_pciefd_remove_all_ctrls()
1895 unregister_candev(can->can.dev); in kvaser_pciefd_remove_all_ctrls()
1896 del_timer(&can->bec_poll_timer); in kvaser_pciefd_remove_all_ctrls()
1897 kvaser_pciefd_pwm_stop(can); in kvaser_pciefd_remove_all_ctrls()
1898 free_candev(can->can.dev); in kvaser_pciefd_remove_all_ctrls()