2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License as
4 * published by the Free Software Foundation version 2.
6 * Parts of this driver are based on the following:
7 * - Kvaser linux leaf driver (version 4.78)
8 * - CAN driver for esd CAN-USB/2
10 * Copyright (C) 2002-2006 KVASER AB, Sweden. All rights reserved.
11 * Copyright (C) 2010 Matthias Fuchs <matthias.fuchs@esd.eu>, esd gmbh
12 * Copyright (C) 2012 Olivier Sobrie <olivier@sobrie.be>
15 #include <linux/completion.h>
16 #include <linux/module.h>
17 #include <linux/netdevice.h>
18 #include <linux/usb.h>
20 #include <linux/can.h>
21 #include <linux/can/dev.h>
22 #include <linux/can/error.h>
24 #define MAX_TX_URBS 16
26 #define START_TIMEOUT 1000 /* msecs */
27 #define STOP_TIMEOUT 1000 /* msecs */
28 #define USB_SEND_TIMEOUT 1000 /* msecs */
29 #define USB_RECV_TIMEOUT 1000 /* msecs */
30 #define RX_BUFFER_SIZE 3072
31 #define CAN_USB_CLOCK 8000000
32 #define MAX_NET_DEVICES 3
34 /* Kvaser USB devices */
35 #define KVASER_VENDOR_ID 0x0bfd
36 #define USB_LEAF_DEVEL_PRODUCT_ID 10
37 #define USB_LEAF_LITE_PRODUCT_ID 11
38 #define USB_LEAF_PRO_PRODUCT_ID 12
39 #define USB_LEAF_SPRO_PRODUCT_ID 14
40 #define USB_LEAF_PRO_LS_PRODUCT_ID 15
41 #define USB_LEAF_PRO_SWC_PRODUCT_ID 16
42 #define USB_LEAF_PRO_LIN_PRODUCT_ID 17
43 #define USB_LEAF_SPRO_LS_PRODUCT_ID 18
44 #define USB_LEAF_SPRO_SWC_PRODUCT_ID 19
45 #define USB_MEMO2_DEVEL_PRODUCT_ID 22
46 #define USB_MEMO2_HSHS_PRODUCT_ID 23
47 #define USB_UPRO_HSHS_PRODUCT_ID 24
48 #define USB_LEAF_LITE_GI_PRODUCT_ID 25
49 #define USB_LEAF_PRO_OBDII_PRODUCT_ID 26
50 #define USB_MEMO2_HSLS_PRODUCT_ID 27
51 #define USB_LEAF_LITE_CH_PRODUCT_ID 28
52 #define USB_BLACKBIRD_SPRO_PRODUCT_ID 29
53 #define USB_OEM_MERCURY_PRODUCT_ID 34
54 #define USB_OEM_LEAF_PRODUCT_ID 35
55 #define USB_CAN_R_PRODUCT_ID 39
56 #define USB_LEAF_LITE_V2_PRODUCT_ID 288
57 #define USB_MINI_PCIE_HS_PRODUCT_ID 289
59 /* USB devices features */
60 #define KVASER_HAS_SILENT_MODE BIT(0)
61 #define KVASER_HAS_TXRX_ERRORS BIT(1)
63 /* Message header size */
64 #define MSG_HEADER_LEN 2
66 /* Can message flags */
67 #define MSG_FLAG_ERROR_FRAME BIT(0)
68 #define MSG_FLAG_OVERRUN BIT(1)
69 #define MSG_FLAG_NERR BIT(2)
70 #define MSG_FLAG_WAKEUP BIT(3)
71 #define MSG_FLAG_REMOTE_FRAME BIT(4)
72 #define MSG_FLAG_RESERVED BIT(5)
73 #define MSG_FLAG_TX_ACK BIT(6)
74 #define MSG_FLAG_TX_REQUEST BIT(7)
77 #define M16C_STATE_BUS_RESET BIT(0)
78 #define M16C_STATE_BUS_ERROR BIT(4)
79 #define M16C_STATE_BUS_PASSIVE BIT(5)
80 #define M16C_STATE_BUS_OFF BIT(6)
83 #define CMD_RX_STD_MESSAGE 12
84 #define CMD_TX_STD_MESSAGE 13
85 #define CMD_RX_EXT_MESSAGE 14
86 #define CMD_TX_EXT_MESSAGE 15
87 #define CMD_SET_BUS_PARAMS 16
88 #define CMD_GET_BUS_PARAMS 17
89 #define CMD_GET_BUS_PARAMS_REPLY 18
90 #define CMD_GET_CHIP_STATE 19
91 #define CMD_CHIP_STATE_EVENT 20
92 #define CMD_SET_CTRL_MODE 21
93 #define CMD_GET_CTRL_MODE 22
94 #define CMD_GET_CTRL_MODE_REPLY 23
95 #define CMD_RESET_CHIP 24
96 #define CMD_RESET_CARD 25
97 #define CMD_START_CHIP 26
98 #define CMD_START_CHIP_REPLY 27
99 #define CMD_STOP_CHIP 28
100 #define CMD_STOP_CHIP_REPLY 29
101 #define CMD_GET_CARD_INFO2 32
102 #define CMD_GET_CARD_INFO 34
103 #define CMD_GET_CARD_INFO_REPLY 35
104 #define CMD_GET_SOFTWARE_INFO 38
105 #define CMD_GET_SOFTWARE_INFO_REPLY 39
106 #define CMD_ERROR_EVENT 45
107 #define CMD_FLUSH_QUEUE 48
108 #define CMD_RESET_ERROR_COUNTER 49
109 #define CMD_TX_ACKNOWLEDGE 50
110 #define CMD_CAN_ERROR_EVENT 51
111 #define CMD_USB_THROTTLE 77
112 #define CMD_LOG_MESSAGE 106
115 #define M16C_EF_ACKE BIT(0)
116 #define M16C_EF_CRCE BIT(1)
117 #define M16C_EF_FORME BIT(2)
118 #define M16C_EF_STFE BIT(3)
119 #define M16C_EF_BITE0 BIT(4)
120 #define M16C_EF_BITE1 BIT(5)
121 #define M16C_EF_RCVE BIT(6)
122 #define M16C_EF_TRE BIT(7)
124 /* bittiming parameters */
125 #define KVASER_USB_TSEG1_MIN 1
126 #define KVASER_USB_TSEG1_MAX 16
127 #define KVASER_USB_TSEG2_MIN 1
128 #define KVASER_USB_TSEG2_MAX 8
129 #define KVASER_USB_SJW_MAX 4
130 #define KVASER_USB_BRP_MIN 1
131 #define KVASER_USB_BRP_MAX 64
132 #define KVASER_USB_BRP_INC 1
135 #define KVASER_CTRL_MODE_NORMAL 1
136 #define KVASER_CTRL_MODE_SILENT 2
137 #define KVASER_CTRL_MODE_SELFRECEPTION 3
138 #define KVASER_CTRL_MODE_OFF 4
141 #define KVASER_EXTENDED_FRAME BIT(31)
143 struct kvaser_msg_simple {
148 struct kvaser_msg_cardinfo {
151 __le32 serial_number;
153 __le32 clock_resolution;
161 struct kvaser_msg_cardinfo2 {
165 __le32 oem_unlock_code;
168 struct kvaser_msg_softinfo {
173 __le16 max_outstanding_tx;
177 struct kvaser_msg_busparams {
187 struct kvaser_msg_tx_can {
195 struct kvaser_msg_rx_can {
202 struct kvaser_msg_chip_state_event {
212 struct kvaser_msg_tx_acknowledge {
220 struct kvaser_msg_error_event {
232 struct kvaser_msg_ctrl_mode {
239 struct kvaser_msg_flush_queue {
246 struct kvaser_msg_log_message {
260 struct kvaser_msg_simple simple;
261 struct kvaser_msg_cardinfo cardinfo;
262 struct kvaser_msg_cardinfo2 cardinfo2;
263 struct kvaser_msg_softinfo softinfo;
264 struct kvaser_msg_busparams busparams;
265 struct kvaser_msg_tx_can tx_can;
266 struct kvaser_msg_rx_can rx_can;
267 struct kvaser_msg_chip_state_event chip_state_event;
268 struct kvaser_msg_tx_acknowledge tx_acknowledge;
269 struct kvaser_msg_error_event error_event;
270 struct kvaser_msg_ctrl_mode ctrl_mode;
271 struct kvaser_msg_flush_queue flush_queue;
272 struct kvaser_msg_log_message log_message;
276 struct kvaser_usb_tx_urb_context {
277 struct kvaser_usb_net_priv *priv;
283 struct usb_device *udev;
284 struct kvaser_usb_net_priv *nets[MAX_NET_DEVICES];
286 struct usb_endpoint_descriptor *bulk_in, *bulk_out;
287 struct usb_anchor rx_submitted;
290 unsigned int nchannels;
293 void *rxbuf[MAX_RX_URBS];
294 dma_addr_t rxbuf_dma[MAX_RX_URBS];
297 struct kvaser_usb_net_priv {
300 atomic_t active_tx_urbs;
301 struct usb_anchor tx_submitted;
302 struct kvaser_usb_tx_urb_context tx_contexts[MAX_TX_URBS];
304 struct completion start_comp, stop_comp;
306 struct kvaser_usb *dev;
307 struct net_device *netdev;
310 struct can_berr_counter bec;
313 static const struct usb_device_id kvaser_usb_table[] = {
314 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_DEVEL_PRODUCT_ID) },
315 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_PRODUCT_ID) },
316 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_PRODUCT_ID),
317 .driver_info = KVASER_HAS_TXRX_ERRORS |
318 KVASER_HAS_SILENT_MODE },
319 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_PRODUCT_ID),
320 .driver_info = KVASER_HAS_TXRX_ERRORS |
321 KVASER_HAS_SILENT_MODE },
322 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_LS_PRODUCT_ID),
323 .driver_info = KVASER_HAS_TXRX_ERRORS |
324 KVASER_HAS_SILENT_MODE },
325 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_SWC_PRODUCT_ID),
326 .driver_info = KVASER_HAS_TXRX_ERRORS |
327 KVASER_HAS_SILENT_MODE },
328 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_LIN_PRODUCT_ID),
329 .driver_info = KVASER_HAS_TXRX_ERRORS |
330 KVASER_HAS_SILENT_MODE },
331 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_LS_PRODUCT_ID),
332 .driver_info = KVASER_HAS_TXRX_ERRORS |
333 KVASER_HAS_SILENT_MODE },
334 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_SWC_PRODUCT_ID),
335 .driver_info = KVASER_HAS_TXRX_ERRORS |
336 KVASER_HAS_SILENT_MODE },
337 { USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_DEVEL_PRODUCT_ID),
338 .driver_info = KVASER_HAS_TXRX_ERRORS |
339 KVASER_HAS_SILENT_MODE },
340 { USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_HSHS_PRODUCT_ID),
341 .driver_info = KVASER_HAS_TXRX_ERRORS |
342 KVASER_HAS_SILENT_MODE },
343 { USB_DEVICE(KVASER_VENDOR_ID, USB_UPRO_HSHS_PRODUCT_ID),
344 .driver_info = KVASER_HAS_TXRX_ERRORS },
345 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_GI_PRODUCT_ID) },
346 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_OBDII_PRODUCT_ID),
347 .driver_info = KVASER_HAS_TXRX_ERRORS |
348 KVASER_HAS_SILENT_MODE },
349 { USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_HSLS_PRODUCT_ID),
350 .driver_info = KVASER_HAS_TXRX_ERRORS },
351 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_CH_PRODUCT_ID),
352 .driver_info = KVASER_HAS_TXRX_ERRORS },
353 { USB_DEVICE(KVASER_VENDOR_ID, USB_BLACKBIRD_SPRO_PRODUCT_ID),
354 .driver_info = KVASER_HAS_TXRX_ERRORS },
355 { USB_DEVICE(KVASER_VENDOR_ID, USB_OEM_MERCURY_PRODUCT_ID),
356 .driver_info = KVASER_HAS_TXRX_ERRORS },
357 { USB_DEVICE(KVASER_VENDOR_ID, USB_OEM_LEAF_PRODUCT_ID),
358 .driver_info = KVASER_HAS_TXRX_ERRORS },
359 { USB_DEVICE(KVASER_VENDOR_ID, USB_CAN_R_PRODUCT_ID),
360 .driver_info = KVASER_HAS_TXRX_ERRORS },
361 { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_V2_PRODUCT_ID) },
362 { USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_HS_PRODUCT_ID) },
365 MODULE_DEVICE_TABLE(usb, kvaser_usb_table);
367 static inline int kvaser_usb_send_msg(const struct kvaser_usb *dev,
368 struct kvaser_msg *msg)
372 return usb_bulk_msg(dev->udev,
373 usb_sndbulkpipe(dev->udev,
374 dev->bulk_out->bEndpointAddress),
375 msg, msg->len, &actual_len,
379 static int kvaser_usb_wait_msg(const struct kvaser_usb *dev, u8 id,
380 struct kvaser_msg *msg)
382 struct kvaser_msg *tmp;
387 unsigned long to = jiffies + msecs_to_jiffies(USB_RECV_TIMEOUT);
389 buf = kzalloc(RX_BUFFER_SIZE, GFP_KERNEL);
394 err = usb_bulk_msg(dev->udev,
395 usb_rcvbulkpipe(dev->udev,
396 dev->bulk_in->bEndpointAddress),
397 buf, RX_BUFFER_SIZE, &actual_len,
403 while (pos <= actual_len - MSG_HEADER_LEN) {
409 if (pos + tmp->len > actual_len) {
410 dev_err(dev->udev->dev.parent,
416 memcpy(msg, tmp, tmp->len);
422 } while (time_before(jiffies, to));
432 static int kvaser_usb_send_simple_msg(const struct kvaser_usb *dev,
433 u8 msg_id, int channel)
435 struct kvaser_msg *msg;
438 msg = kmalloc(sizeof(*msg), GFP_KERNEL);
443 msg->len = MSG_HEADER_LEN + sizeof(struct kvaser_msg_simple);
444 msg->u.simple.channel = channel;
445 msg->u.simple.tid = 0xff;
447 rc = kvaser_usb_send_msg(dev, msg);
453 static int kvaser_usb_get_software_info(struct kvaser_usb *dev)
455 struct kvaser_msg msg;
458 err = kvaser_usb_send_simple_msg(dev, CMD_GET_SOFTWARE_INFO, 0);
462 err = kvaser_usb_wait_msg(dev, CMD_GET_SOFTWARE_INFO_REPLY, &msg);
466 dev->fw_version = le32_to_cpu(msg.u.softinfo.fw_version);
471 static int kvaser_usb_get_card_info(struct kvaser_usb *dev)
473 struct kvaser_msg msg;
476 err = kvaser_usb_send_simple_msg(dev, CMD_GET_CARD_INFO, 0);
480 err = kvaser_usb_wait_msg(dev, CMD_GET_CARD_INFO_REPLY, &msg);
484 dev->nchannels = msg.u.cardinfo.nchannels;
485 if (dev->nchannels > MAX_NET_DEVICES)
491 static void kvaser_usb_tx_acknowledge(const struct kvaser_usb *dev,
492 const struct kvaser_msg *msg)
494 struct net_device_stats *stats;
495 struct kvaser_usb_tx_urb_context *context;
496 struct kvaser_usb_net_priv *priv;
498 struct can_frame *cf;
499 u8 channel = msg->u.tx_acknowledge.channel;
500 u8 tid = msg->u.tx_acknowledge.tid;
502 if (channel >= dev->nchannels) {
503 dev_err(dev->udev->dev.parent,
504 "Invalid channel number (%d)\n", channel);
508 priv = dev->nets[channel];
510 if (!netif_device_present(priv->netdev))
513 stats = &priv->netdev->stats;
515 context = &priv->tx_contexts[tid % MAX_TX_URBS];
517 /* Sometimes the state change doesn't come after a bus-off event */
518 if (priv->can.restart_ms &&
519 (priv->can.state >= CAN_STATE_BUS_OFF)) {
520 skb = alloc_can_err_skb(priv->netdev, &cf);
522 cf->can_id |= CAN_ERR_RESTARTED;
525 stats->rx_bytes += cf->can_dlc;
528 netdev_err(priv->netdev,
529 "No memory left for err_skb\n");
532 priv->can.can_stats.restarts++;
533 netif_carrier_on(priv->netdev);
535 priv->can.state = CAN_STATE_ERROR_ACTIVE;
539 stats->tx_bytes += context->dlc;
540 can_get_echo_skb(priv->netdev, context->echo_index);
542 context->echo_index = MAX_TX_URBS;
543 atomic_dec(&priv->active_tx_urbs);
545 netif_wake_queue(priv->netdev);
548 static void kvaser_usb_simple_msg_callback(struct urb *urb)
550 struct net_device *netdev = urb->context;
552 kfree(urb->transfer_buffer);
555 netdev_warn(netdev, "urb status received: %d\n",
559 static int kvaser_usb_simple_msg_async(struct kvaser_usb_net_priv *priv,
562 struct kvaser_usb *dev = priv->dev;
563 struct net_device *netdev = priv->netdev;
564 struct kvaser_msg *msg;
569 urb = usb_alloc_urb(0, GFP_ATOMIC);
571 netdev_err(netdev, "No memory left for URBs\n");
575 buf = kmalloc(sizeof(struct kvaser_msg), GFP_ATOMIC);
581 msg = (struct kvaser_msg *)buf;
582 msg->len = MSG_HEADER_LEN + sizeof(struct kvaser_msg_simple);
584 msg->u.simple.channel = priv->channel;
586 usb_fill_bulk_urb(urb, dev->udev,
587 usb_sndbulkpipe(dev->udev,
588 dev->bulk_out->bEndpointAddress),
590 kvaser_usb_simple_msg_callback, netdev);
591 usb_anchor_urb(urb, &priv->tx_submitted);
593 err = usb_submit_urb(urb, GFP_ATOMIC);
595 netdev_err(netdev, "Error transmitting URB\n");
596 usb_unanchor_urb(urb);
607 static void kvaser_usb_unlink_tx_urbs(struct kvaser_usb_net_priv *priv)
611 usb_kill_anchored_urbs(&priv->tx_submitted);
612 atomic_set(&priv->active_tx_urbs, 0);
614 for (i = 0; i < MAX_TX_URBS; i++)
615 priv->tx_contexts[i].echo_index = MAX_TX_URBS;
618 static void kvaser_usb_rx_error(const struct kvaser_usb *dev,
619 const struct kvaser_msg *msg)
621 struct can_frame *cf;
623 struct net_device_stats *stats;
624 struct kvaser_usb_net_priv *priv;
625 unsigned int new_state;
626 u8 channel, status, txerr, rxerr, error_factor;
629 case CMD_CAN_ERROR_EVENT:
630 channel = msg->u.error_event.channel;
631 status = msg->u.error_event.status;
632 txerr = msg->u.error_event.tx_errors_count;
633 rxerr = msg->u.error_event.rx_errors_count;
634 error_factor = msg->u.error_event.error_factor;
636 case CMD_LOG_MESSAGE:
637 channel = msg->u.log_message.channel;
638 status = msg->u.log_message.data[0];
639 txerr = msg->u.log_message.data[2];
640 rxerr = msg->u.log_message.data[3];
641 error_factor = msg->u.log_message.data[1];
643 case CMD_CHIP_STATE_EVENT:
644 channel = msg->u.chip_state_event.channel;
645 status = msg->u.chip_state_event.status;
646 txerr = msg->u.chip_state_event.tx_errors_count;
647 rxerr = msg->u.chip_state_event.rx_errors_count;
651 dev_err(dev->udev->dev.parent, "Invalid msg id (%d)\n",
656 if (channel >= dev->nchannels) {
657 dev_err(dev->udev->dev.parent,
658 "Invalid channel number (%d)\n", channel);
662 priv = dev->nets[channel];
663 stats = &priv->netdev->stats;
665 skb = alloc_can_err_skb(priv->netdev, &cf);
671 new_state = priv->can.state;
673 netdev_dbg(priv->netdev, "Error status: 0x%02x\n", status);
675 if (status & (M16C_STATE_BUS_OFF | M16C_STATE_BUS_RESET)) {
676 cf->can_id |= CAN_ERR_BUSOFF;
678 priv->can.can_stats.bus_off++;
679 if (!priv->can.restart_ms)
680 kvaser_usb_simple_msg_async(priv, CMD_STOP_CHIP);
682 netif_carrier_off(priv->netdev);
684 new_state = CAN_STATE_BUS_OFF;
685 } else if (status & M16C_STATE_BUS_PASSIVE) {
686 if (priv->can.state != CAN_STATE_ERROR_PASSIVE) {
687 cf->can_id |= CAN_ERR_CRTL;
690 cf->data[1] = (txerr > rxerr)
691 ? CAN_ERR_CRTL_TX_PASSIVE
692 : CAN_ERR_CRTL_RX_PASSIVE;
694 cf->data[1] = CAN_ERR_CRTL_TX_PASSIVE |
695 CAN_ERR_CRTL_RX_PASSIVE;
697 priv->can.can_stats.error_passive++;
700 new_state = CAN_STATE_ERROR_PASSIVE;
701 } else if (status & M16C_STATE_BUS_ERROR) {
702 if ((priv->can.state < CAN_STATE_ERROR_WARNING) &&
703 ((txerr >= 96) || (rxerr >= 96))) {
704 cf->can_id |= CAN_ERR_CRTL;
705 cf->data[1] = (txerr > rxerr)
706 ? CAN_ERR_CRTL_TX_WARNING
707 : CAN_ERR_CRTL_RX_WARNING;
709 priv->can.can_stats.error_warning++;
710 new_state = CAN_STATE_ERROR_WARNING;
711 } else if ((priv->can.state > CAN_STATE_ERROR_ACTIVE) &&
712 ((txerr < 96) && (rxerr < 96))) {
713 cf->can_id |= CAN_ERR_PROT;
714 cf->data[2] = CAN_ERR_PROT_ACTIVE;
716 new_state = CAN_STATE_ERROR_ACTIVE;
721 cf->can_id |= CAN_ERR_PROT;
722 cf->data[2] = CAN_ERR_PROT_ACTIVE;
724 new_state = CAN_STATE_ERROR_ACTIVE;
727 if (priv->can.restart_ms &&
728 (priv->can.state >= CAN_STATE_BUS_OFF) &&
729 (new_state < CAN_STATE_BUS_OFF)) {
730 cf->can_id |= CAN_ERR_RESTARTED;
731 netif_carrier_on(priv->netdev);
733 priv->can.can_stats.restarts++;
737 priv->can.can_stats.bus_error++;
740 cf->can_id |= CAN_ERR_BUSERROR | CAN_ERR_PROT;
742 if (error_factor & M16C_EF_ACKE)
743 cf->data[3] |= (CAN_ERR_PROT_LOC_ACK);
744 if (error_factor & M16C_EF_CRCE)
745 cf->data[3] |= (CAN_ERR_PROT_LOC_CRC_SEQ |
746 CAN_ERR_PROT_LOC_CRC_DEL);
747 if (error_factor & M16C_EF_FORME)
748 cf->data[2] |= CAN_ERR_PROT_FORM;
749 if (error_factor & M16C_EF_STFE)
750 cf->data[2] |= CAN_ERR_PROT_STUFF;
751 if (error_factor & M16C_EF_BITE0)
752 cf->data[2] |= CAN_ERR_PROT_BIT0;
753 if (error_factor & M16C_EF_BITE1)
754 cf->data[2] |= CAN_ERR_PROT_BIT1;
755 if (error_factor & M16C_EF_TRE)
756 cf->data[2] |= CAN_ERR_PROT_TX;
762 priv->bec.txerr = txerr;
763 priv->bec.rxerr = rxerr;
765 priv->can.state = new_state;
768 stats->rx_bytes += cf->can_dlc;
772 static void kvaser_usb_rx_can_err(const struct kvaser_usb_net_priv *priv,
773 const struct kvaser_msg *msg)
775 struct can_frame *cf;
777 struct net_device_stats *stats = &priv->netdev->stats;
779 if (msg->u.rx_can.flag & (MSG_FLAG_ERROR_FRAME |
781 netdev_err(priv->netdev, "Unknow error (flags: 0x%02x)\n",
788 if (msg->u.rx_can.flag & MSG_FLAG_OVERRUN) {
789 skb = alloc_can_err_skb(priv->netdev, &cf);
795 cf->can_id |= CAN_ERR_CRTL;
796 cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
798 stats->rx_over_errors++;
802 stats->rx_bytes += cf->can_dlc;
807 static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev,
808 const struct kvaser_msg *msg)
810 struct kvaser_usb_net_priv *priv;
811 struct can_frame *cf;
813 struct net_device_stats *stats;
814 u8 channel = msg->u.rx_can.channel;
816 if (channel >= dev->nchannels) {
817 dev_err(dev->udev->dev.parent,
818 "Invalid channel number (%d)\n", channel);
822 priv = dev->nets[channel];
823 stats = &priv->netdev->stats;
825 if ((msg->u.rx_can.flag & MSG_FLAG_ERROR_FRAME) &&
826 (msg->id == CMD_LOG_MESSAGE)) {
827 kvaser_usb_rx_error(dev, msg);
829 } else if (msg->u.rx_can.flag & (MSG_FLAG_ERROR_FRAME |
832 kvaser_usb_rx_can_err(priv, msg);
834 } else if (msg->u.rx_can.flag & ~MSG_FLAG_REMOTE_FRAME) {
835 netdev_warn(priv->netdev,
836 "Unhandled frame (flags: 0x%02x)",
841 skb = alloc_can_skb(priv->netdev, &cf);
847 if (msg->id == CMD_LOG_MESSAGE) {
848 cf->can_id = le32_to_cpu(msg->u.log_message.id);
849 if (cf->can_id & KVASER_EXTENDED_FRAME)
850 cf->can_id &= CAN_EFF_MASK | CAN_EFF_FLAG;
852 cf->can_id &= CAN_SFF_MASK;
854 cf->can_dlc = get_can_dlc(msg->u.log_message.dlc);
856 if (msg->u.log_message.flags & MSG_FLAG_REMOTE_FRAME)
857 cf->can_id |= CAN_RTR_FLAG;
859 memcpy(cf->data, &msg->u.log_message.data,
862 cf->can_id = ((msg->u.rx_can.msg[0] & 0x1f) << 6) |
863 (msg->u.rx_can.msg[1] & 0x3f);
865 if (msg->id == CMD_RX_EXT_MESSAGE) {
867 cf->can_id |= ((msg->u.rx_can.msg[2] & 0x0f) << 14) |
868 ((msg->u.rx_can.msg[3] & 0xff) << 6) |
869 (msg->u.rx_can.msg[4] & 0x3f);
870 cf->can_id |= CAN_EFF_FLAG;
873 cf->can_dlc = get_can_dlc(msg->u.rx_can.msg[5]);
875 if (msg->u.rx_can.flag & MSG_FLAG_REMOTE_FRAME)
876 cf->can_id |= CAN_RTR_FLAG;
878 memcpy(cf->data, &msg->u.rx_can.msg[6],
883 stats->rx_bytes += cf->can_dlc;
887 static void kvaser_usb_start_chip_reply(const struct kvaser_usb *dev,
888 const struct kvaser_msg *msg)
890 struct kvaser_usb_net_priv *priv;
891 u8 channel = msg->u.simple.channel;
893 if (channel >= dev->nchannels) {
894 dev_err(dev->udev->dev.parent,
895 "Invalid channel number (%d)\n", channel);
899 priv = dev->nets[channel];
901 if (completion_done(&priv->start_comp) &&
902 netif_queue_stopped(priv->netdev)) {
903 netif_wake_queue(priv->netdev);
905 netif_start_queue(priv->netdev);
906 complete(&priv->start_comp);
910 static void kvaser_usb_stop_chip_reply(const struct kvaser_usb *dev,
911 const struct kvaser_msg *msg)
913 struct kvaser_usb_net_priv *priv;
914 u8 channel = msg->u.simple.channel;
916 if (channel >= dev->nchannels) {
917 dev_err(dev->udev->dev.parent,
918 "Invalid channel number (%d)\n", channel);
922 priv = dev->nets[channel];
924 complete(&priv->stop_comp);
927 static void kvaser_usb_handle_message(const struct kvaser_usb *dev,
928 const struct kvaser_msg *msg)
931 case CMD_START_CHIP_REPLY:
932 kvaser_usb_start_chip_reply(dev, msg);
935 case CMD_STOP_CHIP_REPLY:
936 kvaser_usb_stop_chip_reply(dev, msg);
939 case CMD_RX_STD_MESSAGE:
940 case CMD_RX_EXT_MESSAGE:
941 case CMD_LOG_MESSAGE:
942 kvaser_usb_rx_can_msg(dev, msg);
945 case CMD_CHIP_STATE_EVENT:
946 case CMD_CAN_ERROR_EVENT:
947 kvaser_usb_rx_error(dev, msg);
950 case CMD_TX_ACKNOWLEDGE:
951 kvaser_usb_tx_acknowledge(dev, msg);
955 dev_warn(dev->udev->dev.parent,
956 "Unhandled message (%d)\n", msg->id);
961 static void kvaser_usb_read_bulk_callback(struct urb *urb)
963 struct kvaser_usb *dev = urb->context;
964 struct kvaser_msg *msg;
968 switch (urb->status) {
975 dev_info(dev->udev->dev.parent, "Rx URB aborted (%d)\n",
980 while (pos <= urb->actual_length - MSG_HEADER_LEN) {
981 msg = urb->transfer_buffer + pos;
986 if (pos + msg->len > urb->actual_length) {
987 dev_err(dev->udev->dev.parent, "Format error\n");
991 kvaser_usb_handle_message(dev, msg);
997 usb_fill_bulk_urb(urb, dev->udev,
998 usb_rcvbulkpipe(dev->udev,
999 dev->bulk_in->bEndpointAddress),
1000 urb->transfer_buffer, RX_BUFFER_SIZE,
1001 kvaser_usb_read_bulk_callback, dev);
1003 err = usb_submit_urb(urb, GFP_ATOMIC);
1004 if (err == -ENODEV) {
1005 for (i = 0; i < dev->nchannels; i++) {
1009 netif_device_detach(dev->nets[i]->netdev);
1012 dev_err(dev->udev->dev.parent,
1013 "Failed resubmitting read bulk urb: %d\n", err);
1019 static int kvaser_usb_setup_rx_urbs(struct kvaser_usb *dev)
1023 if (dev->rxinitdone)
1026 for (i = 0; i < MAX_RX_URBS; i++) {
1027 struct urb *urb = NULL;
1031 urb = usb_alloc_urb(0, GFP_KERNEL);
1033 dev_warn(dev->udev->dev.parent,
1034 "No memory left for URBs\n");
1039 buf = usb_alloc_coherent(dev->udev, RX_BUFFER_SIZE,
1040 GFP_KERNEL, &buf_dma);
1042 dev_warn(dev->udev->dev.parent,
1043 "No memory left for USB buffer\n");
1049 usb_fill_bulk_urb(urb, dev->udev,
1050 usb_rcvbulkpipe(dev->udev,
1051 dev->bulk_in->bEndpointAddress),
1052 buf, RX_BUFFER_SIZE,
1053 kvaser_usb_read_bulk_callback,
1055 urb->transfer_dma = buf_dma;
1056 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1057 usb_anchor_urb(urb, &dev->rx_submitted);
1059 err = usb_submit_urb(urb, GFP_KERNEL);
1061 usb_unanchor_urb(urb);
1062 usb_free_coherent(dev->udev, RX_BUFFER_SIZE, buf,
1068 dev->rxbuf[i] = buf;
1069 dev->rxbuf_dma[i] = buf_dma;
1075 dev_warn(dev->udev->dev.parent,
1076 "Cannot setup read URBs, error %d\n", err);
1078 } else if (i < MAX_RX_URBS) {
1079 dev_warn(dev->udev->dev.parent,
1080 "RX performances may be slow\n");
1083 dev->rxinitdone = true;
1088 static int kvaser_usb_set_opt_mode(const struct kvaser_usb_net_priv *priv)
1090 struct kvaser_msg *msg;
1093 msg = kmalloc(sizeof(*msg), GFP_KERNEL);
1097 msg->id = CMD_SET_CTRL_MODE;
1098 msg->len = MSG_HEADER_LEN + sizeof(struct kvaser_msg_ctrl_mode);
1099 msg->u.ctrl_mode.tid = 0xff;
1100 msg->u.ctrl_mode.channel = priv->channel;
1102 if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
1103 msg->u.ctrl_mode.ctrl_mode = KVASER_CTRL_MODE_SILENT;
1105 msg->u.ctrl_mode.ctrl_mode = KVASER_CTRL_MODE_NORMAL;
1107 rc = kvaser_usb_send_msg(priv->dev, msg);
1113 static int kvaser_usb_start_chip(struct kvaser_usb_net_priv *priv)
1117 init_completion(&priv->start_comp);
1119 err = kvaser_usb_send_simple_msg(priv->dev, CMD_START_CHIP,
1124 if (!wait_for_completion_timeout(&priv->start_comp,
1125 msecs_to_jiffies(START_TIMEOUT)))
1131 static int kvaser_usb_open(struct net_device *netdev)
1133 struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
1134 struct kvaser_usb *dev = priv->dev;
1137 err = open_candev(netdev);
1141 err = kvaser_usb_setup_rx_urbs(dev);
1145 err = kvaser_usb_set_opt_mode(priv);
1149 err = kvaser_usb_start_chip(priv);
1151 netdev_warn(netdev, "Cannot start device, error %d\n", err);
1155 priv->can.state = CAN_STATE_ERROR_ACTIVE;
1160 close_candev(netdev);
1164 static void kvaser_usb_unlink_all_urbs(struct kvaser_usb *dev)
1168 usb_kill_anchored_urbs(&dev->rx_submitted);
1170 for (i = 0; i < MAX_RX_URBS; i++)
1171 usb_free_coherent(dev->udev, RX_BUFFER_SIZE,
1175 for (i = 0; i < MAX_NET_DEVICES; i++) {
1176 struct kvaser_usb_net_priv *priv = dev->nets[i];
1179 kvaser_usb_unlink_tx_urbs(priv);
1183 static int kvaser_usb_stop_chip(struct kvaser_usb_net_priv *priv)
1187 init_completion(&priv->stop_comp);
1189 err = kvaser_usb_send_simple_msg(priv->dev, CMD_STOP_CHIP,
1194 if (!wait_for_completion_timeout(&priv->stop_comp,
1195 msecs_to_jiffies(STOP_TIMEOUT)))
1201 static int kvaser_usb_flush_queue(struct kvaser_usb_net_priv *priv)
1203 struct kvaser_msg *msg;
1206 msg = kmalloc(sizeof(*msg), GFP_KERNEL);
1210 msg->id = CMD_FLUSH_QUEUE;
1211 msg->len = MSG_HEADER_LEN + sizeof(struct kvaser_msg_flush_queue);
1212 msg->u.flush_queue.channel = priv->channel;
1213 msg->u.flush_queue.flags = 0x00;
1215 rc = kvaser_usb_send_msg(priv->dev, msg);
1221 static int kvaser_usb_close(struct net_device *netdev)
1223 struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
1224 struct kvaser_usb *dev = priv->dev;
1227 netif_stop_queue(netdev);
1229 err = kvaser_usb_flush_queue(priv);
1231 netdev_warn(netdev, "Cannot flush queue, error %d\n", err);
1233 if (kvaser_usb_send_simple_msg(dev, CMD_RESET_CHIP, priv->channel))
1234 netdev_warn(netdev, "Cannot reset card, error %d\n", err);
1236 err = kvaser_usb_stop_chip(priv);
1238 netdev_warn(netdev, "Cannot stop device, error %d\n", err);
1240 /* reset tx contexts */
1241 kvaser_usb_unlink_tx_urbs(priv);
1243 priv->can.state = CAN_STATE_STOPPED;
1244 close_candev(priv->netdev);
1249 static void kvaser_usb_write_bulk_callback(struct urb *urb)
1251 struct kvaser_usb_tx_urb_context *context = urb->context;
1252 struct kvaser_usb_net_priv *priv;
1253 struct net_device *netdev;
1255 if (WARN_ON(!context))
1258 priv = context->priv;
1259 netdev = priv->netdev;
1261 kfree(urb->transfer_buffer);
1263 if (!netif_device_present(netdev))
1267 netdev_info(netdev, "Tx URB aborted (%d)\n", urb->status);
1270 static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb,
1271 struct net_device *netdev)
1273 struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
1274 struct kvaser_usb *dev = priv->dev;
1275 struct net_device_stats *stats = &netdev->stats;
1276 struct can_frame *cf = (struct can_frame *)skb->data;
1277 struct kvaser_usb_tx_urb_context *context = NULL;
1280 struct kvaser_msg *msg;
1282 int ret = NETDEV_TX_OK;
1284 if (can_dropped_invalid_skb(netdev, skb))
1285 return NETDEV_TX_OK;
1287 urb = usb_alloc_urb(0, GFP_ATOMIC);
1289 netdev_err(netdev, "No memory left for URBs\n");
1290 stats->tx_dropped++;
1292 return NETDEV_TX_OK;
1295 buf = kmalloc(sizeof(struct kvaser_msg), GFP_ATOMIC);
1297 stats->tx_dropped++;
1303 msg->len = MSG_HEADER_LEN + sizeof(struct kvaser_msg_tx_can);
1304 msg->u.tx_can.flags = 0;
1305 msg->u.tx_can.channel = priv->channel;
1307 if (cf->can_id & CAN_EFF_FLAG) {
1308 msg->id = CMD_TX_EXT_MESSAGE;
1309 msg->u.tx_can.msg[0] = (cf->can_id >> 24) & 0x1f;
1310 msg->u.tx_can.msg[1] = (cf->can_id >> 18) & 0x3f;
1311 msg->u.tx_can.msg[2] = (cf->can_id >> 14) & 0x0f;
1312 msg->u.tx_can.msg[3] = (cf->can_id >> 6) & 0xff;
1313 msg->u.tx_can.msg[4] = cf->can_id & 0x3f;
1315 msg->id = CMD_TX_STD_MESSAGE;
1316 msg->u.tx_can.msg[0] = (cf->can_id >> 6) & 0x1f;
1317 msg->u.tx_can.msg[1] = cf->can_id & 0x3f;
1320 msg->u.tx_can.msg[5] = cf->can_dlc;
1321 memcpy(&msg->u.tx_can.msg[6], cf->data, cf->can_dlc);
1323 if (cf->can_id & CAN_RTR_FLAG)
1324 msg->u.tx_can.flags |= MSG_FLAG_REMOTE_FRAME;
1326 for (i = 0; i < ARRAY_SIZE(priv->tx_contexts); i++) {
1327 if (priv->tx_contexts[i].echo_index == MAX_TX_URBS) {
1328 context = &priv->tx_contexts[i];
1333 /* This should never happen; it implies a flow control bug */
1335 netdev_warn(netdev, "cannot find free context\n");
1336 ret = NETDEV_TX_BUSY;
1340 context->priv = priv;
1341 context->echo_index = i;
1342 context->dlc = cf->can_dlc;
1344 msg->u.tx_can.tid = context->echo_index;
1346 usb_fill_bulk_urb(urb, dev->udev,
1347 usb_sndbulkpipe(dev->udev,
1348 dev->bulk_out->bEndpointAddress),
1350 kvaser_usb_write_bulk_callback, context);
1351 usb_anchor_urb(urb, &priv->tx_submitted);
1353 can_put_echo_skb(skb, netdev, context->echo_index);
1355 atomic_inc(&priv->active_tx_urbs);
1357 if (atomic_read(&priv->active_tx_urbs) >= MAX_TX_URBS)
1358 netif_stop_queue(netdev);
1360 err = usb_submit_urb(urb, GFP_ATOMIC);
1361 if (unlikely(err)) {
1362 can_free_echo_skb(netdev, context->echo_index);
1364 atomic_dec(&priv->active_tx_urbs);
1365 usb_unanchor_urb(urb);
1367 stats->tx_dropped++;
1370 netif_device_detach(netdev);
1372 netdev_warn(netdev, "Failed tx_urb %d\n", err);
1379 return NETDEV_TX_OK;
1388 static const struct net_device_ops kvaser_usb_netdev_ops = {
1389 .ndo_open = kvaser_usb_open,
1390 .ndo_stop = kvaser_usb_close,
1391 .ndo_start_xmit = kvaser_usb_start_xmit,
1392 .ndo_change_mtu = can_change_mtu,
1395 static const struct can_bittiming_const kvaser_usb_bittiming_const = {
1396 .name = "kvaser_usb",
1397 .tseg1_min = KVASER_USB_TSEG1_MIN,
1398 .tseg1_max = KVASER_USB_TSEG1_MAX,
1399 .tseg2_min = KVASER_USB_TSEG2_MIN,
1400 .tseg2_max = KVASER_USB_TSEG2_MAX,
1401 .sjw_max = KVASER_USB_SJW_MAX,
1402 .brp_min = KVASER_USB_BRP_MIN,
1403 .brp_max = KVASER_USB_BRP_MAX,
1404 .brp_inc = KVASER_USB_BRP_INC,
1407 static int kvaser_usb_set_bittiming(struct net_device *netdev)
1409 struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
1410 struct can_bittiming *bt = &priv->can.bittiming;
1411 struct kvaser_usb *dev = priv->dev;
1412 struct kvaser_msg *msg;
1415 msg = kmalloc(sizeof(*msg), GFP_KERNEL);
1419 msg->id = CMD_SET_BUS_PARAMS;
1420 msg->len = MSG_HEADER_LEN + sizeof(struct kvaser_msg_busparams);
1421 msg->u.busparams.channel = priv->channel;
1422 msg->u.busparams.tid = 0xff;
1423 msg->u.busparams.bitrate = cpu_to_le32(bt->bitrate);
1424 msg->u.busparams.sjw = bt->sjw;
1425 msg->u.busparams.tseg1 = bt->prop_seg + bt->phase_seg1;
1426 msg->u.busparams.tseg2 = bt->phase_seg2;
1428 if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES)
1429 msg->u.busparams.no_samp = 3;
1431 msg->u.busparams.no_samp = 1;
1433 rc = kvaser_usb_send_msg(dev, msg);
1439 static int kvaser_usb_set_mode(struct net_device *netdev,
1442 struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
1446 case CAN_MODE_START:
1447 err = kvaser_usb_simple_msg_async(priv, CMD_START_CHIP);
1458 static int kvaser_usb_get_berr_counter(const struct net_device *netdev,
1459 struct can_berr_counter *bec)
1461 struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
1468 static void kvaser_usb_remove_interfaces(struct kvaser_usb *dev)
1472 for (i = 0; i < dev->nchannels; i++) {
1476 unregister_netdev(dev->nets[i]->netdev);
1479 kvaser_usb_unlink_all_urbs(dev);
1481 for (i = 0; i < dev->nchannels; i++) {
1485 free_candev(dev->nets[i]->netdev);
1489 static int kvaser_usb_init_one(struct usb_interface *intf,
1490 const struct usb_device_id *id, int channel)
1492 struct kvaser_usb *dev = usb_get_intfdata(intf);
1493 struct net_device *netdev;
1494 struct kvaser_usb_net_priv *priv;
1497 err = kvaser_usb_send_simple_msg(dev, CMD_RESET_CHIP, channel);
1501 netdev = alloc_candev(sizeof(*priv), MAX_TX_URBS);
1503 dev_err(&intf->dev, "Cannot alloc candev\n");
1507 priv = netdev_priv(netdev);
1509 init_completion(&priv->start_comp);
1510 init_completion(&priv->stop_comp);
1512 init_usb_anchor(&priv->tx_submitted);
1513 atomic_set(&priv->active_tx_urbs, 0);
1515 for (i = 0; i < ARRAY_SIZE(priv->tx_contexts); i++)
1516 priv->tx_contexts[i].echo_index = MAX_TX_URBS;
1519 priv->netdev = netdev;
1520 priv->channel = channel;
1522 priv->can.state = CAN_STATE_STOPPED;
1523 priv->can.clock.freq = CAN_USB_CLOCK;
1524 priv->can.bittiming_const = &kvaser_usb_bittiming_const;
1525 priv->can.do_set_bittiming = kvaser_usb_set_bittiming;
1526 priv->can.do_set_mode = kvaser_usb_set_mode;
1527 if (id->driver_info & KVASER_HAS_TXRX_ERRORS)
1528 priv->can.do_get_berr_counter = kvaser_usb_get_berr_counter;
1529 priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES;
1530 if (id->driver_info & KVASER_HAS_SILENT_MODE)
1531 priv->can.ctrlmode_supported |= CAN_CTRLMODE_LISTENONLY;
1533 netdev->flags |= IFF_ECHO;
1535 netdev->netdev_ops = &kvaser_usb_netdev_ops;
1537 SET_NETDEV_DEV(netdev, &intf->dev);
1538 netdev->dev_id = channel;
1540 dev->nets[channel] = priv;
1542 err = register_candev(netdev);
1544 dev_err(&intf->dev, "Failed to register can device\n");
1545 free_candev(netdev);
1546 dev->nets[channel] = NULL;
1550 netdev_dbg(netdev, "device registered\n");
1555 static int kvaser_usb_get_endpoints(const struct usb_interface *intf,
1556 struct usb_endpoint_descriptor **in,
1557 struct usb_endpoint_descriptor **out)
1559 const struct usb_host_interface *iface_desc;
1560 struct usb_endpoint_descriptor *endpoint;
1563 iface_desc = &intf->altsetting[0];
1565 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
1566 endpoint = &iface_desc->endpoint[i].desc;
1568 if (!*in && usb_endpoint_is_bulk_in(endpoint))
1571 if (!*out && usb_endpoint_is_bulk_out(endpoint))
1574 /* use first bulk endpoint for in and out */
1582 static int kvaser_usb_probe(struct usb_interface *intf,
1583 const struct usb_device_id *id)
1585 struct kvaser_usb *dev;
1589 dev = devm_kzalloc(&intf->dev, sizeof(*dev), GFP_KERNEL);
1593 err = kvaser_usb_get_endpoints(intf, &dev->bulk_in, &dev->bulk_out);
1595 dev_err(&intf->dev, "Cannot get usb endpoint(s)");
1599 dev->udev = interface_to_usbdev(intf);
1601 init_usb_anchor(&dev->rx_submitted);
1603 usb_set_intfdata(intf, dev);
1605 /* On some x86 laptops, plugging a Kvaser device again after
1606 * an unplug makes the firmware always ignore the very first
1607 * command. For such a case, provide some room for retries
1608 * instead of completely exiting the driver.
1611 err = kvaser_usb_get_software_info(dev);
1612 } while (--retry && err == -ETIMEDOUT);
1616 "Cannot get software infos, error %d\n", err);
1620 err = kvaser_usb_get_card_info(dev);
1623 "Cannot get card infos, error %d\n", err);
1627 dev_dbg(&intf->dev, "Firmware version: %d.%d.%d\n",
1628 ((dev->fw_version >> 24) & 0xff),
1629 ((dev->fw_version >> 16) & 0xff),
1630 (dev->fw_version & 0xffff));
1632 for (i = 0; i < dev->nchannels; i++) {
1633 err = kvaser_usb_init_one(intf, id, i);
1635 kvaser_usb_remove_interfaces(dev);
1643 static void kvaser_usb_disconnect(struct usb_interface *intf)
1645 struct kvaser_usb *dev = usb_get_intfdata(intf);
1647 usb_set_intfdata(intf, NULL);
1652 kvaser_usb_remove_interfaces(dev);
1655 static struct usb_driver kvaser_usb_driver = {
1656 .name = "kvaser_usb",
1657 .probe = kvaser_usb_probe,
1658 .disconnect = kvaser_usb_disconnect,
1659 .id_table = kvaser_usb_table,
1662 module_usb_driver(kvaser_usb_driver);
1664 MODULE_AUTHOR("Olivier Sobrie <olivier@sobrie.be>");
1665 MODULE_DESCRIPTION("CAN driver for Kvaser CAN/USB devices");
1666 MODULE_LICENSE("GPL v2");