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Commit 7259124e authored by Jimmy Assarsson's avatar Jimmy Assarsson Committed by Marc Kleine-Budde
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can: kvaser_usb: Split driver into kvaser_usb_core.c and kvaser_usb_leaf.c 

First part of adding support for Kvaser USB device family "hydra".

Split kvaser_usb.c into kvaser_usb/kvaser_usb{.h,_core.c,_leaf.c}.

kvaser_usb_core.c contains common functionality, such as USB
writing/reading and allocation of netdev.
kvaser_usb_leaf.c contains device specific code, used in
kvaser_usb_core.c.

struct kvaser_usb_dev_ops contains device specific functions that are
common for all devices in the family. While, struct kvaser_usb_dev_cfg
describes the device configurations in terms of CAN clock frequency,
timestamp frequency and CAN controller bittiming constants.
Signed-off-by: default avatarJimmy Assarsson <extja@kvaser.com>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent e0543f24
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drivers/net/can/usb/Makefile
View file @ 7259124e
......@@ -7,7 +7,7 @@ obj-$(CONFIG_CAN_8DEV_USB) += usb_8dev.o
obj-$(CONFIG_CAN_EMS_USB) += ems_usb.o
obj-$(CONFIG_CAN_ESD_USB2) += esd_usb2.o
obj-$(CONFIG_CAN_GS_USB) += gs_usb.o
obj-$(CONFIG_CAN_KVASER_USB) += kvaser_usb.o
obj-$(CONFIG_CAN_KVASER_USB) += kvaser_usb/
obj-$(CONFIG_CAN_MCBA_USB) += mcba_usb.o
obj-$(CONFIG_CAN_PEAK_USB) += peak_usb/
obj-$(CONFIG_CAN_UCAN) += ucan.o
drivers/net/can/usb/kvaser_usb/Makefile 0 → 100644
View file @ 7259124e
obj-$(CONFIG_CAN_KVASER_USB) += kvaser_usb.o
kvaser_usb-y = kvaser_usb_core.o kvaser_usb_leaf.o
drivers/net/can/usb/kvaser_usb/kvaser_usb.h 0 → 100644
View file @ 7259124e
/* SPDX-License-Identifier: GPL-2.0 */
/* Parts of this driver are based on the following:
* - Kvaser linux leaf driver (version 4.78)
* - CAN driver for esd CAN-USB/2
* - Kvaser linux usbcanII driver (version 5.3)
*
* Copyright (C) 2002-2018 KVASER AB, Sweden. All rights reserved.
* Copyright (C) 2010 Matthias Fuchs <matthias.fuchs@esd.eu>, esd gmbh
* Copyright (C) 2012 Olivier Sobrie <olivier@sobrie.be>
* Copyright (C) 2015 Valeo S.A.
*/
#ifndef KVASER_USB_H
#define KVASER_USB_H
/* Kvaser USB CAN dongles are divided into two major families:
* - Leaf: Based on Renesas M32C, running firmware labeled as 'filo'
* - UsbcanII: Based on Renesas M16C, running firmware labeled as 'helios'
*/
#include <linux/completion.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/usb.h>
#include <linux/can.h>
#include <linux/can/dev.h>
#define KVASER_USB_MAX_RX_URBS 4
#define KVASER_USB_MAX_TX_URBS 128
#define KVASER_USB_TIMEOUT 1000 /* msecs */
#define KVASER_USB_RX_BUFFER_SIZE 3072
#define KVASER_USB_MAX_NET_DEVICES 3
/* USB devices features */
#define KVASER_USB_HAS_SILENT_MODE BIT(0)
#define KVASER_USB_HAS_TXRX_ERRORS BIT(1)
struct kvaser_usb_dev_cfg;
enum kvaser_usb_leaf_family {
KVASER_LEAF,
KVASER_USBCAN,
};
struct kvaser_usb_dev_card_data {
u32 ctrlmode_supported;
struct {
enum kvaser_usb_leaf_family family;
} leaf;
};
/* Context for an outstanding, not yet ACKed, transmission */
struct kvaser_usb_tx_urb_context {
struct kvaser_usb_net_priv *priv;
u32 echo_index;
int dlc;
};
struct kvaser_usb {
struct usb_device *udev;
struct usb_interface *intf;
struct kvaser_usb_net_priv *nets[KVASER_USB_MAX_NET_DEVICES];
const struct kvaser_usb_dev_ops *ops;
const struct kvaser_usb_dev_cfg *cfg;
struct usb_endpoint_descriptor *bulk_in, *bulk_out;
struct usb_anchor rx_submitted;
/* @max_tx_urbs: Firmware-reported maximum number of outstanding,
* not yet ACKed, transmissions on this device. This value is
* also used as a sentinel for marking free tx contexts.
*/
u32 fw_version;
unsigned int nchannels;
unsigned int max_tx_urbs;
struct kvaser_usb_dev_card_data card_data;
bool rxinitdone;
void *rxbuf[KVASER_USB_MAX_RX_URBS];
dma_addr_t rxbuf_dma[KVASER_USB_MAX_RX_URBS];
};
struct kvaser_usb_net_priv {
struct can_priv can;
struct can_berr_counter bec;
struct kvaser_usb *dev;
struct net_device *netdev;
int channel;
struct completion start_comp, stop_comp;
struct usb_anchor tx_submitted;
spinlock_t tx_contexts_lock; /* lock for active_tx_contexts */
int active_tx_contexts;
struct kvaser_usb_tx_urb_context tx_contexts[];
};
/**
* struct kvaser_usb_dev_ops - Device specific functions
* @dev_set_mode: used for can.do_set_mode
* @dev_set_bittiming: used for can.do_set_bittiming
* @dev_get_berr_counter: used for can.do_get_berr_counter
*
* @dev_setup_endpoints: setup USB in and out endpoints
* @dev_init_card: initialize card
* @dev_get_software_info: get software info
* @dev_get_card_info: get card info
*
* @dev_set_opt_mode: set ctrlmod
* @dev_start_chip: start the CAN controller
* @dev_stop_chip: stop the CAN controller
* @dev_reset_chip: reset the CAN controller
* @dev_flush_queue: flush outstanding CAN messages
* @dev_read_bulk_callback: handle incoming commands
* @dev_frame_to_cmd: translate struct can_frame into device command
*/
struct kvaser_usb_dev_ops {
int (*dev_set_mode)(struct net_device *netdev, enum can_mode mode);
int (*dev_set_bittiming)(struct net_device *netdev);
int (*dev_get_berr_counter)(const struct net_device *netdev,
struct can_berr_counter *bec);
int (*dev_setup_endpoints)(struct kvaser_usb *dev);
int (*dev_init_card)(struct kvaser_usb *dev);
int (*dev_get_software_info)(struct kvaser_usb *dev);
int (*dev_get_card_info)(struct kvaser_usb *dev);
int (*dev_set_opt_mode)(const struct kvaser_usb_net_priv *priv);
int (*dev_start_chip)(struct kvaser_usb_net_priv *priv);
int (*dev_stop_chip)(struct kvaser_usb_net_priv *priv);
int (*dev_reset_chip)(struct kvaser_usb *dev, int channel);
int (*dev_flush_queue)(struct kvaser_usb_net_priv *priv);
void (*dev_read_bulk_callback)(struct kvaser_usb *dev, void *buf,
int len);
void *(*dev_frame_to_cmd)(const struct kvaser_usb_net_priv *priv,
const struct sk_buff *skb, int *frame_len,
int *cmd_len, u16 transid);
};
struct kvaser_usb_dev_cfg {
const struct can_clock clock;
const unsigned int timestamp_freq;
const struct can_bittiming_const * const bittiming_const;
const struct can_bittiming_const * const data_bittiming_const;
};
extern const struct kvaser_usb_dev_ops kvaser_usb_leaf_dev_ops;
int kvaser_usb_recv_cmd(const struct kvaser_usb *dev, void *cmd, int len,
int *actual_len);
int kvaser_usb_send_cmd(const struct kvaser_usb *dev, void *cmd, int len);
int kvaser_usb_send_cmd_async(struct kvaser_usb_net_priv *priv, void *cmd,
int len);
int kvaser_usb_can_rx_over_error(struct net_device *netdev);
#endif /* KVASER_USB_H */
drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c 0 → 100644
View file @ 7259124e
// SPDX-License-Identifier: GPL-2.0
/* Parts of this driver are based on the following:
* - Kvaser linux leaf driver (version 4.78)
* - CAN driver for esd CAN-USB/2
* - Kvaser linux usbcanII driver (version 5.3)
*
* Copyright (C) 2002-2018 KVASER AB, Sweden. All rights reserved.
* Copyright (C) 2010 Matthias Fuchs <matthias.fuchs@esd.eu>, esd gmbh
* Copyright (C) 2012 Olivier Sobrie <olivier@sobrie.be>
* Copyright (C) 2015 Valeo S.A.
*/
#include <linux/completion.h>
#include <linux/device.h>
#include <linux/gfp.h>
#include <linux/if.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/usb.h>
#include <linux/can.h>
#include <linux/can/dev.h>
#include <linux/can/error.h>
#include <linux/can/netlink.h>
#include "kvaser_usb.h"
/* Kvaser USB vendor id. */
#define KVASER_VENDOR_ID 0x0bfd
/* Kvaser Leaf USB devices product ids */
#define USB_LEAF_DEVEL_PRODUCT_ID 10
#define USB_LEAF_LITE_PRODUCT_ID 11
#define USB_LEAF_PRO_PRODUCT_ID 12
#define USB_LEAF_SPRO_PRODUCT_ID 14
#define USB_LEAF_PRO_LS_PRODUCT_ID 15
#define USB_LEAF_PRO_SWC_PRODUCT_ID 16
#define USB_LEAF_PRO_LIN_PRODUCT_ID 17
#define USB_LEAF_SPRO_LS_PRODUCT_ID 18
#define USB_LEAF_SPRO_SWC_PRODUCT_ID 19
#define USB_MEMO2_DEVEL_PRODUCT_ID 22
#define USB_MEMO2_HSHS_PRODUCT_ID 23
#define USB_UPRO_HSHS_PRODUCT_ID 24
#define USB_LEAF_LITE_GI_PRODUCT_ID 25
#define USB_LEAF_PRO_OBDII_PRODUCT_ID 26
#define USB_MEMO2_HSLS_PRODUCT_ID 27
#define USB_LEAF_LITE_CH_PRODUCT_ID 28
#define USB_BLACKBIRD_SPRO_PRODUCT_ID 29
#define USB_OEM_MERCURY_PRODUCT_ID 34
#define USB_OEM_LEAF_PRODUCT_ID 35
#define USB_CAN_R_PRODUCT_ID 39
#define USB_LEAF_LITE_V2_PRODUCT_ID 288
#define USB_MINI_PCIE_HS_PRODUCT_ID 289
#define USB_LEAF_LIGHT_HS_V2_OEM_PRODUCT_ID 290
#define USB_USBCAN_LIGHT_2HS_PRODUCT_ID 291
#define USB_MINI_PCIE_2HS_PRODUCT_ID 292
/* Kvaser USBCan-II devices product ids */
#define USB_USBCAN_REVB_PRODUCT_ID 2
#define USB_VCI2_PRODUCT_ID 3
#define USB_USBCAN2_PRODUCT_ID 4
#define USB_MEMORATOR_PRODUCT_ID 5
static inline bool kvaser_is_leaf(const struct usb_device_id *id)
{
return id->idProduct >= USB_LEAF_DEVEL_PRODUCT_ID &&
id->idProduct <= USB_MINI_PCIE_2HS_PRODUCT_ID;
}
static inline bool kvaser_is_usbcan(const struct usb_device_id *id)
{
return id->idProduct >= USB_USBCAN_REVB_PRODUCT_ID &&
id->idProduct <= USB_MEMORATOR_PRODUCT_ID;
}
static const struct usb_device_id kvaser_usb_table[] = {
/* Leaf USB product IDs */
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_DEVEL_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS |
KVASER_USB_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS |
KVASER_USB_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_LS_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS |
KVASER_USB_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_SWC_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS |
KVASER_USB_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_LIN_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS |
KVASER_USB_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_LS_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS |
KVASER_USB_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_SWC_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS |
KVASER_USB_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_DEVEL_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS |
KVASER_USB_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_HSHS_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS |
KVASER_USB_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_UPRO_HSHS_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_GI_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_OBDII_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS |
KVASER_USB_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_HSLS_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_CH_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_BLACKBIRD_SPRO_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_OEM_MERCURY_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_OEM_LEAF_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_CAN_R_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_V2_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_HS_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LIGHT_HS_V2_OEM_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN_LIGHT_2HS_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_2HS_PRODUCT_ID) },
/* USBCANII USB product IDs */
{ USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN2_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN_REVB_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MEMORATOR_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_VCI2_PRODUCT_ID),
.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
{ }
};
MODULE_DEVICE_TABLE(usb, kvaser_usb_table);
int kvaser_usb_send_cmd(const struct kvaser_usb *dev, void *cmd, int len)
{
int actual_len; /* Not used */
return usb_bulk_msg(dev->udev,
usb_sndbulkpipe(dev->udev,
dev->bulk_out->bEndpointAddress),
cmd, len, &actual_len, KVASER_USB_TIMEOUT);
}
int kvaser_usb_recv_cmd(const struct kvaser_usb *dev, void *cmd, int len,
int *actual_len)
{
return usb_bulk_msg(dev->udev,
usb_rcvbulkpipe(dev->udev,
dev->bulk_in->bEndpointAddress),
cmd, len, actual_len, KVASER_USB_TIMEOUT);
}
static void kvaser_usb_send_cmd_callback(struct urb *urb)
{
struct net_device *netdev = urb->context;
kfree(urb->transfer_buffer);
if (urb->status)
netdev_warn(netdev, "urb status received: %d\n", urb->status);
}
int kvaser_usb_send_cmd_async(struct kvaser_usb_net_priv *priv, void *cmd,
int len)
{
struct kvaser_usb *dev = priv->dev;
struct net_device *netdev = priv->netdev;
struct urb *urb;
int err;
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb)
return -ENOMEM;
usb_fill_bulk_urb(urb, dev->udev,
usb_sndbulkpipe(dev->udev,
dev->bulk_out->bEndpointAddress),
cmd, len, kvaser_usb_send_cmd_callback, netdev);
usb_anchor_urb(urb, &priv->tx_submitted);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err) {
netdev_err(netdev, "Error transmitting URB\n");
usb_unanchor_urb(urb);
}
usb_free_urb(urb);
return 0;
}
int kvaser_usb_can_rx_over_error(struct net_device *netdev)
{
struct net_device_stats *stats = &netdev->stats;
struct can_frame *cf;
struct sk_buff *skb;
stats->rx_over_errors++;
stats->rx_errors++;
skb = alloc_can_err_skb(netdev, &cf);
if (!skb) {
stats->rx_dropped++;
netdev_warn(netdev, "No memory left for err_skb\n");
return -ENOMEM;
}
cf->can_id |= CAN_ERR_CRTL;
cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
stats->rx_packets++;
stats->rx_bytes += cf->can_dlc;
netif_rx(skb);
return 0;
}
static void kvaser_usb_read_bulk_callback(struct urb *urb)
{
struct kvaser_usb *dev = urb->context;
int err;
unsigned int i;
switch (urb->status) {
case 0:
break;
case -ENOENT:
case -EPIPE:
case -EPROTO:
case -ESHUTDOWN:
return;
default:
dev_info(&dev->intf->dev, "Rx URB aborted (%d)\n", urb->status);
goto resubmit_urb;
}
dev->ops->dev_read_bulk_callback(dev, urb->transfer_buffer,
urb->actual_length);
resubmit_urb:
usb_fill_bulk_urb(urb, dev->udev,
usb_rcvbulkpipe(dev->udev,
dev->bulk_in->bEndpointAddress),
urb->transfer_buffer, KVASER_USB_RX_BUFFER_SIZE,
kvaser_usb_read_bulk_callback, dev);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err == -ENODEV) {
for (i = 0; i < dev->nchannels; i++) {
if (!dev->nets[i])
continue;
netif_device_detach(dev->nets[i]->netdev);
}
} else if (err) {
dev_err(&dev->intf->dev,
"Failed resubmitting read bulk urb: %d\n", err);
}
}
static int kvaser_usb_setup_rx_urbs(struct kvaser_usb *dev)
{
int i, err = 0;
if (dev->rxinitdone)
return 0;
for (i = 0; i < KVASER_USB_MAX_RX_URBS; i++) {
struct urb *urb = NULL;
u8 *buf = NULL;
dma_addr_t buf_dma;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
err = -ENOMEM;
break;
}
buf = usb_alloc_coherent(dev->udev, KVASER_USB_RX_BUFFER_SIZE,
GFP_KERNEL, &buf_dma);
if (!buf) {
dev_warn(&dev->intf->dev,
"No memory left for USB buffer\n");
usb_free_urb(urb);
err = -ENOMEM;
break;
}
usb_fill_bulk_urb(urb, dev->udev,
usb_rcvbulkpipe
(dev->udev,
dev->bulk_in->bEndpointAddress),
buf, KVASER_USB_RX_BUFFER_SIZE,
kvaser_usb_read_bulk_callback, dev);
urb->transfer_dma = buf_dma;
urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
usb_anchor_urb(urb, &dev->rx_submitted);
err = usb_submit_urb(urb, GFP_KERNEL);
if (err) {
usb_unanchor_urb(urb);
usb_free_coherent(dev->udev,
KVASER_USB_RX_BUFFER_SIZE, buf,
buf_dma);
usb_free_urb(urb);
break;
}
dev->rxbuf[i] = buf;
dev->rxbuf_dma[i] = buf_dma;
usb_free_urb(urb);
}
if (i == 0) {
dev_warn(&dev->intf->dev, "Cannot setup read URBs, error %d\n",
err);
return err;
} else if (i < KVASER_USB_MAX_RX_URBS) {
dev_warn(&dev->intf->dev, "RX performances may be slow\n");
}
dev->rxinitdone = true;
return 0;
}
static int kvaser_usb_open(struct net_device *netdev)
{
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
struct kvaser_usb *dev = priv->dev;
int err;
err = open_candev(netdev);
if (err)
return err;
err = kvaser_usb_setup_rx_urbs(dev);
if (err)
goto error;
err = dev->ops->dev_set_opt_mode(priv);
if (err)
goto error;
err = dev->ops->dev_start_chip(priv);
if (err) {
netdev_warn(netdev, "Cannot start device, error %d\n", err);
goto error;
}
priv->can.state = CAN_STATE_ERROR_ACTIVE;
return 0;
error:
close_candev(netdev);
return err;
}
static void kvaser_usb_reset_tx_urb_contexts(struct kvaser_usb_net_priv *priv)
{
int i, max_tx_urbs;
max_tx_urbs = priv->dev->max_tx_urbs;
priv->active_tx_contexts = 0;
for (i = 0; i < max_tx_urbs; i++)
priv->tx_contexts[i].echo_index = max_tx_urbs;
}
/* This method might sleep. Do not call it in the atomic context
* of URB completions.
*/
static void kvaser_usb_unlink_tx_urbs(struct kvaser_usb_net_priv *priv)
{
usb_kill_anchored_urbs(&priv->tx_submitted);
kvaser_usb_reset_tx_urb_contexts(priv);
}
static void kvaser_usb_unlink_all_urbs(struct kvaser_usb *dev)
{
int i;
usb_kill_anchored_urbs(&dev->rx_submitted);
for (i = 0; i < KVASER_USB_MAX_RX_URBS; i++)
usb_free_coherent(dev->udev, KVASER_USB_RX_BUFFER_SIZE,
dev->rxbuf[i], dev->rxbuf_dma[i]);
for (i = 0; i < dev->nchannels; i++) {
struct kvaser_usb_net_priv *priv = dev->nets[i];
if (priv)
kvaser_usb_unlink_tx_urbs(priv);
}
}
static int kvaser_usb_close(struct net_device *netdev)
{
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
struct kvaser_usb *dev = priv->dev;
int err;
netif_stop_queue(netdev);
err = dev->ops->dev_flush_queue(priv);
if (err)
netdev_warn(netdev, "Cannot flush queue, error %d\n", err);
if (dev->ops->dev_reset_chip) {
err = dev->ops->dev_reset_chip(dev, priv->channel);
if (err)
netdev_warn(netdev, "Cannot reset card, error %d\n",
err);
}
err = dev->ops->dev_stop_chip(priv);
if (err)
netdev_warn(netdev, "Cannot stop device, error %d\n", err);
/* reset tx contexts */
kvaser_usb_unlink_tx_urbs(priv);
priv->can.state = CAN_STATE_STOPPED;
close_candev(priv->netdev);
return 0;
}
static void kvaser_usb_write_bulk_callback(struct urb *urb)
{
struct kvaser_usb_tx_urb_context *context = urb->context;
struct kvaser_usb_net_priv *priv;
struct net_device *netdev;
if (WARN_ON(!context))
return;
priv = context->priv;
netdev = priv->netdev;
kfree(urb->transfer_buffer);
if (!netif_device_present(netdev))
return;
if (urb->status)
netdev_info(netdev, "Tx URB aborted (%d)\n", urb->status);
}
static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb,
struct net_device *netdev)
{
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
struct kvaser_usb *dev = priv->dev;
struct net_device_stats *stats = &netdev->stats;
struct kvaser_usb_tx_urb_context *context = NULL;
struct urb *urb;
void *buf;
int cmd_len = 0;
int err, ret = NETDEV_TX_OK;
unsigned int i;
unsigned long flags;
if (can_dropped_invalid_skb(netdev, skb))
return NETDEV_TX_OK;
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb) {
stats->tx_dropped++;
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
spin_lock_irqsave(&priv->tx_contexts_lock, flags);
for (i = 0; i < dev->max_tx_urbs; i++) {
if (priv->tx_contexts[i].echo_index == dev->max_tx_urbs) {
context = &priv->tx_contexts[i];
context->echo_index = i;
can_put_echo_skb(skb, netdev, context->echo_index);
++priv->active_tx_contexts;
if (priv->active_tx_contexts >= (int)dev->max_tx_urbs)
netif_stop_queue(netdev);
break;
}
}
spin_unlock_irqrestore(&priv->tx_contexts_lock, flags);
/* This should never happen; it implies a flow control bug */
if (!context) {
netdev_warn(netdev, "cannot find free context\n");
ret = NETDEV_TX_BUSY;
goto freeurb;
}
buf = dev->ops->dev_frame_to_cmd(priv, skb, &context->dlc, &cmd_len,
context->echo_index);
if (!buf) {
stats->tx_dropped++;
dev_kfree_skb(skb);
spin_lock_irqsave(&priv->tx_contexts_lock, flags);
can_free_echo_skb(netdev, context->echo_index);
context->echo_index = dev->max_tx_urbs;
--priv->active_tx_contexts;
netif_wake_queue(netdev);
spin_unlock_irqrestore(&priv->tx_contexts_lock, flags);
goto freeurb;
}
context->priv = priv;
usb_fill_bulk_urb(urb, dev->udev,
usb_sndbulkpipe(dev->udev,
dev->bulk_out->bEndpointAddress),
buf, cmd_len, kvaser_usb_write_bulk_callback,
context);
usb_anchor_urb(urb, &priv->tx_submitted);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (unlikely(err)) {
spin_lock_irqsave(&priv->tx_contexts_lock, flags);
can_free_echo_skb(netdev, context->echo_index);
context->echo_index = dev->max_tx_urbs;
--priv->active_tx_contexts;
netif_wake_queue(netdev);
spin_unlock_irqrestore(&priv->tx_contexts_lock, flags);
usb_unanchor_urb(urb);
kfree(buf);
stats->tx_dropped++;
if (err == -ENODEV)
netif_device_detach(netdev);
else
netdev_warn(netdev, "Failed tx_urb %d\n", err);
goto freeurb;
}
ret = NETDEV_TX_OK;
freeurb:
usb_free_urb(urb);
return ret;
}
static const struct net_device_ops kvaser_usb_netdev_ops = {
.ndo_open = kvaser_usb_open,
.ndo_stop = kvaser_usb_close,
.ndo_start_xmit = kvaser_usb_start_xmit,
.ndo_change_mtu = can_change_mtu,
};
static void kvaser_usb_remove_interfaces(struct kvaser_usb *dev)
{
int i;
for (i = 0; i < dev->nchannels; i++) {
if (!dev->nets[i])
continue;
unregister_candev(dev->nets[i]->netdev);
}
kvaser_usb_unlink_all_urbs(dev);
for (i = 0; i < dev->nchannels; i++) {
if (!dev->nets[i])
continue;
free_candev(dev->nets[i]->netdev);
}
}
static int kvaser_usb_init_one(struct kvaser_usb *dev,
const struct usb_device_id *id, int channel)
{
struct net_device *netdev;
struct kvaser_usb_net_priv *priv;
int err;
if (dev->ops->dev_reset_chip) {
err = dev->ops->dev_reset_chip(dev, channel);
if (err)
return err;
}
netdev = alloc_candev(sizeof(*priv) +
dev->max_tx_urbs * sizeof(*priv->tx_contexts),
dev->max_tx_urbs);
if (!netdev) {
dev_err(&dev->intf->dev, "Cannot alloc candev\n");
return -ENOMEM;
}
priv = netdev_priv(netdev);
init_usb_anchor(&priv->tx_submitted);
init_completion(&priv->start_comp);
init_completion(&priv->stop_comp);
priv->can.ctrlmode_supported = 0;
priv->dev = dev;
priv->netdev = netdev;
priv->channel = channel;
spin_lock_init(&priv->tx_contexts_lock);
kvaser_usb_reset_tx_urb_contexts(priv);
priv->can.state = CAN_STATE_STOPPED;
priv->can.clock.freq = dev->cfg->clock.freq;
priv->can.bittiming_const = dev->cfg->bittiming_const;
priv->can.do_set_bittiming = dev->ops->dev_set_bittiming;
priv->can.do_set_mode = dev->ops->dev_set_mode;
if (id->driver_info & KVASER_USB_HAS_TXRX_ERRORS)
priv->can.do_get_berr_counter = dev->ops->dev_get_berr_counter;
if (id->driver_info & KVASER_USB_HAS_SILENT_MODE)
priv->can.ctrlmode_supported |= CAN_CTRLMODE_LISTENONLY;
priv->can.ctrlmode_supported |= dev->card_data.ctrlmode_supported;
netdev->flags |= IFF_ECHO;
netdev->netdev_ops = &kvaser_usb_netdev_ops;
SET_NETDEV_DEV(netdev, &dev->intf->dev);
netdev->dev_id = channel;
dev->nets[channel] = priv;
err = register_candev(netdev);
if (err) {
dev_err(&dev->intf->dev, "Failed to register CAN device\n");
free_candev(netdev);
dev->nets[channel] = NULL;
return err;
}
netdev_dbg(netdev, "device registered\n");
return 0;
}
static int kvaser_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct kvaser_usb *dev;
int err;
int i;
dev = devm_kzalloc(&intf->dev, sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
if (kvaser_is_leaf(id)) {
dev->card_data.leaf.family = KVASER_LEAF;
dev->ops = &kvaser_usb_leaf_dev_ops;
} else if (kvaser_is_usbcan(id)) {
dev->card_data.leaf.family = KVASER_USBCAN;
dev->ops = &kvaser_usb_leaf_dev_ops;
} else {
dev_err(&intf->dev,
"Product ID (%d) is not a supported Kvaser USB device\n",
id->idProduct);
return -ENODEV;
}
dev->intf = intf;
err = dev->ops->dev_setup_endpoints(dev);
if (err) {
dev_err(&intf->dev, "Cannot get usb endpoint(s)");
return err;
}
dev->udev = interface_to_usbdev(intf);
init_usb_anchor(&dev->rx_submitted);
usb_set_intfdata(intf, dev);
dev->card_data.ctrlmode_supported = 0;
err = dev->ops->dev_init_card(dev);
if (err) {
dev_err(&intf->dev,
"Failed to initialize card, error %d\n", err);
return err;
}
err = dev->ops->dev_get_software_info(dev);
if (err) {
dev_err(&intf->dev,
"Cannot get software info, error %d\n", err);
return err;
}
if (WARN_ON(!dev->cfg))
return -ENODEV;
dev_dbg(&intf->dev, "Firmware version: %d.%d.%d\n",
((dev->fw_version >> 24) & 0xff),
((dev->fw_version >> 16) & 0xff),
(dev->fw_version & 0xffff));
dev_dbg(&intf->dev, "Max outstanding tx = %d URBs\n", dev->max_tx_urbs);
err = dev->ops->dev_get_card_info(dev);
if (err) {
dev_err(&intf->dev, "Cannot get card info, error %d\n", err);
return err;
}
for (i = 0; i < dev->nchannels; i++) {
err = kvaser_usb_init_one(dev, id, i);
if (err) {
kvaser_usb_remove_interfaces(dev);
return err;
}
}
return 0;
}
static void kvaser_usb_disconnect(struct usb_interface *intf)
{
struct kvaser_usb *dev = usb_get_intfdata(intf);
usb_set_intfdata(intf, NULL);
if (!dev)
return;
kvaser_usb_remove_interfaces(dev);
}
static struct usb_driver kvaser_usb_driver = {
.name = "kvaser_usb",
.probe = kvaser_usb_probe,
.disconnect = kvaser_usb_disconnect,
.id_table = kvaser_usb_table,
};
module_usb_driver(kvaser_usb_driver);
MODULE_AUTHOR("Olivier Sobrie <olivier@sobrie.be>");
MODULE_AUTHOR("Kvaser AB <support@kvaser.com>");
MODULE_DESCRIPTION("CAN driver for Kvaser CAN/USB devices");
MODULE_LICENSE("GPL v2");
drivers/net/can/usb/kvaser_usb.c → drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
View file @ 7259124e
......@@ -4,84 +4,40 @@
* - CAN driver for esd CAN-USB/2
* - Kvaser linux usbcanII driver (version 5.3)
*
* Copyright (C) 2002-2006 KVASER AB, Sweden. All rights reserved.
* Copyright (C) 2002-2018 KVASER AB, Sweden. All rights reserved.
* Copyright (C) 2010 Matthias Fuchs <matthias.fuchs@esd.eu>, esd gmbh
* Copyright (C) 2012 Olivier Sobrie <olivier@sobrie.be>
* Copyright (C) 2015 Valeo S.A.
*/
#include <linux/spinlock.h>
#include <linux/kernel.h>
#include <linux/completion.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/gfp.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/usb.h>
#include <linux/can.h>
#include <linux/can/dev.h>
#include <linux/can/error.h>
#include <linux/can/netlink.h>
#define MAX_RX_URBS 4
#define KVASER_USB_TIMEOUT 1000 /* msecs */
#define RX_BUFFER_SIZE 3072
#define CAN_USB_CLOCK 8000000
#define MAX_NET_DEVICES 3
#define MAX_USBCAN_NET_DEVICES 2
#include "kvaser_usb.h"
/* Kvaser Leaf USB devices */
#define KVASER_VENDOR_ID 0x0bfd
#define USB_LEAF_DEVEL_PRODUCT_ID 10
#define USB_LEAF_LITE_PRODUCT_ID 11
#define USB_LEAF_PRO_PRODUCT_ID 12
#define USB_LEAF_SPRO_PRODUCT_ID 14
#define USB_LEAF_PRO_LS_PRODUCT_ID 15
#define USB_LEAF_PRO_SWC_PRODUCT_ID 16
#define USB_LEAF_PRO_LIN_PRODUCT_ID 17
#define USB_LEAF_SPRO_LS_PRODUCT_ID 18
#define USB_LEAF_SPRO_SWC_PRODUCT_ID 19
#define USB_MEMO2_DEVEL_PRODUCT_ID 22
#define USB_MEMO2_HSHS_PRODUCT_ID 23
#define USB_UPRO_HSHS_PRODUCT_ID 24
#define USB_LEAF_LITE_GI_PRODUCT_ID 25
#define USB_LEAF_PRO_OBDII_PRODUCT_ID 26
#define USB_MEMO2_HSLS_PRODUCT_ID 27
#define USB_LEAF_LITE_CH_PRODUCT_ID 28
#define USB_BLACKBIRD_SPRO_PRODUCT_ID 29
#define USB_OEM_MERCURY_PRODUCT_ID 34
#define USB_OEM_LEAF_PRODUCT_ID 35
#define USB_CAN_R_PRODUCT_ID 39
#define USB_LEAF_LITE_V2_PRODUCT_ID 288
#define USB_MINI_PCIE_HS_PRODUCT_ID 289
#define USB_LEAF_LIGHT_HS_V2_OEM_PRODUCT_ID 290
#define USB_USBCAN_LIGHT_2HS_PRODUCT_ID 291
#define USB_MINI_PCIE_2HS_PRODUCT_ID 292
static inline bool kvaser_is_leaf(const struct usb_device_id *id)
{
return id->idProduct >= USB_LEAF_DEVEL_PRODUCT_ID &&
id->idProduct <= USB_MINI_PCIE_2HS_PRODUCT_ID;
}
/* Kvaser USBCan-II devices */
#define USB_USBCAN_REVB_PRODUCT_ID 2
#define USB_VCI2_PRODUCT_ID 3
#define USB_USBCAN2_PRODUCT_ID 4
#define USB_MEMORATOR_PRODUCT_ID 5
/* Forward declaration */
static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_dev_cfg;
static inline bool kvaser_is_usbcan(const struct usb_device_id *id)
{
return id->idProduct >= USB_USBCAN_REVB_PRODUCT_ID &&
id->idProduct <= USB_MEMORATOR_PRODUCT_ID;
}
/* USB devices features */
#define KVASER_HAS_SILENT_MODE BIT(0)
#define KVASER_HAS_TXRX_ERRORS BIT(1)
#define CAN_USB_CLOCK 8000000
#define MAX_USBCAN_NET_DEVICES 2
/* Command header size */
#define CMD_HEADER_LEN 2
/* CAN message flags */
/* Kvaser CAN message flags */
#define MSG_FLAG_ERROR_FRAME BIT(0)
#define MSG_FLAG_OVERRUN BIT(1)
#define MSG_FLAG_NERR BIT(2)
......@@ -161,15 +117,6 @@ static inline bool kvaser_is_usbcan(const struct usb_device_id *id)
/* Extended CAN identifier flag */
#define KVASER_EXTENDED_FRAME BIT(31)
/* Kvaser USB CAN dongles are divided into two major families:
* - Leaf: Based on Renesas M32C, running firmware labeled as 'filo'
* - UsbcanII: Based on Renesas M16C, running firmware labeled as 'helios'
*/
enum kvaser_usb_family {
KVASER_LEAF,
KVASER_USBCAN,
};
struct kvaser_cmd_simple {
u8 tid;
u8 channel;
......@@ -388,7 +335,7 @@ struct kvaser_cmd {
* and decide the error event's channel. Thus for USBCAN, the channel
* field is only advisory.
*/
struct kvaser_usb_error_summary {
struct kvaser_usb_err_summary {
u8 channel, status, txerr, rxerr;
union {
struct {
......@@ -401,133 +348,60 @@ struct kvaser_usb_error_summary {
};
};
/* Context for an outstanding, not yet ACKed, transmission */
struct kvaser_usb_tx_urb_context {
struct kvaser_usb_net_priv *priv;
u32 echo_index;
int dlc;
};
struct kvaser_usb {
struct usb_device *udev;
struct usb_interface *intf;
struct kvaser_usb_net_priv *nets[MAX_NET_DEVICES];
struct usb_endpoint_descriptor *bulk_in, *bulk_out;
struct usb_anchor rx_submitted;
static void *
kvaser_usb_leaf_frame_to_cmd(const struct kvaser_usb_net_priv *priv,
const struct sk_buff *skb, int *frame_len,
int *cmd_len, u16 transid)
{
struct kvaser_usb *dev = priv->dev;
struct kvaser_cmd *cmd;
u8 *cmd_tx_can_flags = NULL; /* GCC */
struct can_frame *cf = (struct can_frame *)skb->data;
/* @max_tx_urbs: Firmware-reported maximum number of outstanding,
* not yet ACKed, transmissions on this device. This value is
* also used as a sentinel for marking free tx contexts.
*/
u32 fw_version;
unsigned int nchannels;
unsigned int max_tx_urbs;
enum kvaser_usb_family family;
bool rxinitdone;
void *rxbuf[MAX_RX_URBS];
dma_addr_t rxbuf_dma[MAX_RX_URBS];
};
*frame_len = cf->can_dlc;
struct kvaser_usb_net_priv {
struct can_priv can;
struct can_berr_counter bec;
cmd = kmalloc(sizeof(*cmd), GFP_ATOMIC);
if (cmd) {
cmd->u.tx_can.tid = transid & 0xff;
cmd->len = *cmd_len = CMD_HEADER_LEN +
sizeof(struct kvaser_cmd_tx_can);
cmd->u.tx_can.channel = priv->channel;
struct kvaser_usb *dev;
struct net_device *netdev;
int channel;
switch (dev->card_data.leaf.family) {
case KVASER_LEAF:
cmd_tx_can_flags = &cmd->u.tx_can.leaf.flags;
break;
case KVASER_USBCAN:
cmd_tx_can_flags = &cmd->u.tx_can.usbcan.flags;
break;
}
struct completion start_comp, stop_comp;
struct usb_anchor tx_submitted;
*cmd_tx_can_flags = 0;
spinlock_t tx_contexts_lock;
int active_tx_contexts;
struct kvaser_usb_tx_urb_context tx_contexts[];
};
static const struct usb_device_id kvaser_usb_table[] = {
/* Leaf family IDs */
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_DEVEL_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS |
KVASER_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS |
KVASER_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_LS_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS |
KVASER_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_SWC_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS |
KVASER_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_LIN_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS |
KVASER_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_LS_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS |
KVASER_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_SWC_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS |
KVASER_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_DEVEL_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS |
KVASER_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_HSHS_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS |
KVASER_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_UPRO_HSHS_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_GI_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_OBDII_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS |
KVASER_HAS_SILENT_MODE },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_HSLS_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_CH_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_BLACKBIRD_SPRO_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_OEM_MERCURY_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_OEM_LEAF_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_CAN_R_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_V2_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_HS_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LIGHT_HS_V2_OEM_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN_LIGHT_2HS_PRODUCT_ID) },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_2HS_PRODUCT_ID) },
/* USBCANII family IDs */
{ USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN2_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN_REVB_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_MEMORATOR_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ USB_DEVICE(KVASER_VENDOR_ID, USB_VCI2_PRODUCT_ID),
.driver_info = KVASER_HAS_TXRX_ERRORS },
{ }
};
MODULE_DEVICE_TABLE(usb, kvaser_usb_table);
if (cf->can_id & CAN_EFF_FLAG) {
cmd->id = CMD_TX_EXT_MESSAGE;
cmd->u.tx_can.data[0] = (cf->can_id >> 24) & 0x1f;
cmd->u.tx_can.data[1] = (cf->can_id >> 18) & 0x3f;
cmd->u.tx_can.data[2] = (cf->can_id >> 14) & 0x0f;
cmd->u.tx_can.data[3] = (cf->can_id >> 6) & 0xff;
cmd->u.tx_can.data[4] = cf->can_id & 0x3f;
} else {
cmd->id = CMD_TX_STD_MESSAGE;
cmd->u.tx_can.data[0] = (cf->can_id >> 6) & 0x1f;
cmd->u.tx_can.data[1] = cf->can_id & 0x3f;
}
static inline int kvaser_usb_send_cmd(const struct kvaser_usb *dev,
struct kvaser_cmd *cmd)
{
int actual_len;
cmd->u.tx_can.data[5] = cf->can_dlc;
memcpy(&cmd->u.tx_can.data[6], cf->data, cf->can_dlc);
return usb_bulk_msg(dev->udev,
usb_sndbulkpipe(dev->udev,
dev->bulk_out->bEndpointAddress),
cmd, cmd->len, &actual_len, KVASER_USB_TIMEOUT);
if (cf->can_id & CAN_RTR_FLAG)
*cmd_tx_can_flags |= MSG_FLAG_REMOTE_FRAME;
}
return cmd;
}
static int kvaser_usb_wait_cmd(const struct kvaser_usb *dev, u8 id,
struct kvaser_cmd *cmd)
static int kvaser_usb_leaf_wait_cmd(const struct kvaser_usb *dev, u8 id,
struct kvaser_cmd *cmd)
{
struct kvaser_cmd *tmp;
void *buf;
......@@ -536,16 +410,13 @@ static int kvaser_usb_wait_cmd(const struct kvaser_usb *dev, u8 id,
int pos;
unsigned long to = jiffies + msecs_to_jiffies(KVASER_USB_TIMEOUT);
buf = kzalloc(RX_BUFFER_SIZE, GFP_KERNEL);
buf = kzalloc(KVASER_USB_RX_BUFFER_SIZE, GFP_KERNEL);
if (!buf)
return -ENOMEM;
do {
err = usb_bulk_msg(dev->udev,
usb_rcvbulkpipe(dev->udev,
dev->bulk_in->bEndpointAddress),
buf, RX_BUFFER_SIZE, &actual_len,
KVASER_USB_TIMEOUT);
err = kvaser_usb_recv_cmd(dev, buf, KVASER_USB_RX_BUFFER_SIZE,
&actual_len);
if (err < 0)
goto end;
......@@ -558,8 +429,9 @@ static int kvaser_usb_wait_cmd(const struct kvaser_usb *dev, u8 id,
* for further details.
*/
if (tmp->len == 0) {
pos = round_up(pos, le16_to_cpu(dev->bulk_in->
wMaxPacketSize));
pos = round_up(pos,
le16_to_cpu
(dev->bulk_in->wMaxPacketSize));
continue;
}
......@@ -586,8 +458,8 @@ static int kvaser_usb_wait_cmd(const struct kvaser_usb *dev, u8 id,
return err;
}
static int kvaser_usb_send_simple_cmd(const struct kvaser_usb *dev,
u8 cmd_id, int channel)
static int kvaser_usb_leaf_send_simple_cmd(const struct kvaser_usb *dev,
u8 cmd_id, int channel)
{
struct kvaser_cmd *cmd;
int rc;
......@@ -601,26 +473,26 @@ static int kvaser_usb_send_simple_cmd(const struct kvaser_usb *dev,
cmd->u.simple.channel = channel;
cmd->u.simple.tid = 0xff;
rc = kvaser_usb_send_cmd(dev, cmd);
rc = kvaser_usb_send_cmd(dev, cmd, cmd->len);
kfree(cmd);
return rc;
}
static int kvaser_usb_get_software_info(struct kvaser_usb *dev)
static int kvaser_usb_leaf_get_software_info_inner(struct kvaser_usb *dev)
{
struct kvaser_cmd cmd;
int err;
err = kvaser_usb_send_simple_cmd(dev, CMD_GET_SOFTWARE_INFO, 0);
err = kvaser_usb_leaf_send_simple_cmd(dev, CMD_GET_SOFTWARE_INFO, 0);
if (err)
return err;
err = kvaser_usb_wait_cmd(dev, CMD_GET_SOFTWARE_INFO_REPLY, &cmd);
err = kvaser_usb_leaf_wait_cmd(dev, CMD_GET_SOFTWARE_INFO_REPLY, &cmd);
if (err)
return err;
switch (dev->family) {
switch (dev->card_data.leaf.family) {
case KVASER_LEAF:
dev->fw_version = le32_to_cpu(cmd.u.leaf.softinfo.fw_version);
dev->max_tx_urbs =
......@@ -636,36 +508,51 @@ static int kvaser_usb_get_software_info(struct kvaser_usb *dev)
return 0;
}
static int kvaser_usb_get_card_info(struct kvaser_usb *dev)
static int kvaser_usb_leaf_get_software_info(struct kvaser_usb *dev)
{
int err;
int retry = 3;
/* On some x86 laptops, plugging a Kvaser device again after
* an unplug makes the firmware always ignore the very first
* command. For such a case, provide some room for retries
* instead of completely exiting the driver.
*/
do {
err = kvaser_usb_leaf_get_software_info_inner(dev);
} while (--retry && err == -ETIMEDOUT);
return err;
}
static int kvaser_usb_leaf_get_card_info(struct kvaser_usb *dev)
{
struct kvaser_cmd cmd;
int err;
err = kvaser_usb_send_simple_cmd(dev, CMD_GET_CARD_INFO, 0);
err = kvaser_usb_leaf_send_simple_cmd(dev, CMD_GET_CARD_INFO, 0);
if (err)
return err;
err = kvaser_usb_wait_cmd(dev, CMD_GET_CARD_INFO_REPLY, &cmd);
err = kvaser_usb_leaf_wait_cmd(dev, CMD_GET_CARD_INFO_REPLY, &cmd);
if (err)
return err;
dev->nchannels = cmd.u.cardinfo.nchannels;
if ((dev->nchannels > MAX_NET_DEVICES) ||
(dev->family == KVASER_USBCAN &&
if (dev->nchannels > KVASER_USB_MAX_NET_DEVICES ||
(dev->card_data.leaf.family == KVASER_USBCAN &&
dev->nchannels > MAX_USBCAN_NET_DEVICES))
return -EINVAL;
return 0;
}
static void kvaser_usb_tx_acknowledge(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
static void kvaser_usb_leaf_tx_acknowledge(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
{
struct net_device_stats *stats;
struct kvaser_usb_tx_urb_context *context;
struct kvaser_usb_net_priv *priv;
struct sk_buff *skb;
struct can_frame *cf;
unsigned long flags;
u8 channel, tid;
......@@ -688,8 +575,10 @@ static void kvaser_usb_tx_acknowledge(const struct kvaser_usb *dev,
context = &priv->tx_contexts[tid % dev->max_tx_urbs];
/* Sometimes the state change doesn't come after a bus-off event */
if (priv->can.restart_ms &&
(priv->can.state >= CAN_STATE_BUS_OFF)) {
if (priv->can.restart_ms && priv->can.state >= CAN_STATE_BUS_OFF) {
struct sk_buff *skb;
struct can_frame *cf;
skb = alloc_can_err_skb(priv->netdev, &cf);
if (skb) {
cf->can_id |= CAN_ERR_RESTARTED;
......@@ -721,66 +610,31 @@ static void kvaser_usb_tx_acknowledge(const struct kvaser_usb *dev,
spin_unlock_irqrestore(&priv->tx_contexts_lock, flags);
}
static void kvaser_usb_simple_cmd_callback(struct urb *urb)
{
struct net_device *netdev = urb->context;
kfree(urb->transfer_buffer);
if (urb->status)
netdev_warn(netdev, "urb status received: %d\n",
urb->status);
}
static int kvaser_usb_simple_cmd_async(struct kvaser_usb_net_priv *priv,
u8 cmd_id)
static int kvaser_usb_leaf_simple_cmd_async(struct kvaser_usb_net_priv *priv,
u8 cmd_id)
{
struct kvaser_usb *dev = priv->dev;
struct net_device *netdev = priv->netdev;
struct kvaser_cmd *cmd;
struct urb *urb;
void *buf;
int err;
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb)
return -ENOMEM;
buf = kmalloc(sizeof(struct kvaser_cmd), GFP_ATOMIC);
if (!buf) {
usb_free_urb(urb);
cmd = kmalloc(sizeof(*cmd), GFP_ATOMIC);
if (!cmd)
return -ENOMEM;
}
cmd = (struct kvaser_cmd *)buf;
cmd->len = CMD_HEADER_LEN + sizeof(struct kvaser_cmd_simple);
cmd->id = cmd_id;
cmd->u.simple.channel = priv->channel;
usb_fill_bulk_urb(urb, dev->udev,
usb_sndbulkpipe(dev->udev,
dev->bulk_out->bEndpointAddress),
buf, cmd->len,
kvaser_usb_simple_cmd_callback, netdev);
usb_anchor_urb(urb, &priv->tx_submitted);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err) {
netdev_err(netdev, "Error transmitting URB\n");
usb_unanchor_urb(urb);
kfree(buf);
usb_free_urb(urb);
return err;
}
usb_free_urb(urb);
err = kvaser_usb_send_cmd_async(priv, cmd, cmd->len);
if (err)
kfree(cmd);
return 0;
return err;
}
static void kvaser_usb_rx_error_update_can_state(struct kvaser_usb_net_priv *priv,
const struct kvaser_usb_error_summary *es,
struct can_frame *cf)
static void
kvaser_usb_leaf_rx_error_update_can_state(struct kvaser_usb_net_priv *priv,
const struct kvaser_usb_err_summary *es,
struct can_frame *cf)
{
struct kvaser_usb *dev = priv->dev;
struct net_device_stats *stats = &priv->netdev->stats;
......@@ -788,18 +642,19 @@ static void kvaser_usb_rx_error_update_can_state(struct kvaser_usb_net_priv *pri
netdev_dbg(priv->netdev, "Error status: 0x%02x\n", es->status);
new_state = cur_state = priv->can.state;
new_state = priv->can.state;
cur_state = priv->can.state;
if (es->status & (M16C_STATE_BUS_OFF | M16C_STATE_BUS_RESET))
if (es->status & (M16C_STATE_BUS_OFF | M16C_STATE_BUS_RESET)) {
new_state = CAN_STATE_BUS_OFF;
else if (es->status & M16C_STATE_BUS_PASSIVE)
} else if (es->status & M16C_STATE_BUS_PASSIVE) {
new_state = CAN_STATE_ERROR_PASSIVE;
else if (es->status & M16C_STATE_BUS_ERROR) {
} else if (es->status & M16C_STATE_BUS_ERROR) {
/* Guard against spurious error events after a busoff */
if (cur_state < CAN_STATE_BUS_OFF) {
if ((es->txerr >= 128) || (es->rxerr >= 128))
if (es->txerr >= 128 || es->rxerr >= 128)
new_state = CAN_STATE_ERROR_PASSIVE;
else if ((es->txerr >= 96) || (es->rxerr >= 96))
else if (es->txerr >= 96 || es->rxerr >= 96)
new_state = CAN_STATE_ERROR_WARNING;
else if (cur_state > CAN_STATE_ERROR_ACTIVE)
new_state = CAN_STATE_ERROR_ACTIVE;
......@@ -817,12 +672,11 @@ static void kvaser_usb_rx_error_update_can_state(struct kvaser_usb_net_priv *pri
}
if (priv->can.restart_ms &&
(cur_state >= CAN_STATE_BUS_OFF) &&
(new_state < CAN_STATE_BUS_OFF)) {
cur_state >= CAN_STATE_BUS_OFF &&
new_state < CAN_STATE_BUS_OFF)
priv->can.can_stats.restarts++;
}
switch (dev->family) {
switch (dev->card_data.leaf.family) {
case KVASER_LEAF:
if (es->leaf.error_factor) {
priv->can.can_stats.bus_error++;
......@@ -834,9 +688,8 @@ static void kvaser_usb_rx_error_update_can_state(struct kvaser_usb_net_priv *pri
stats->tx_errors++;
if (es->usbcan.error_state & USBCAN_ERROR_STATE_RX_ERROR)
stats->rx_errors++;
if (es->usbcan.error_state & USBCAN_ERROR_STATE_BUSERROR) {
if (es->usbcan.error_state & USBCAN_ERROR_STATE_BUSERROR)
priv->can.can_stats.bus_error++;
}
break;
}
......@@ -844,10 +697,12 @@ static void kvaser_usb_rx_error_update_can_state(struct kvaser_usb_net_priv *pri
priv->bec.rxerr = es->rxerr;
}
static void kvaser_usb_rx_error(const struct kvaser_usb *dev,
const struct kvaser_usb_error_summary *es)
static void kvaser_usb_leaf_rx_error(const struct kvaser_usb *dev,
const struct kvaser_usb_err_summary *es)
{
struct can_frame *cf, tmp_cf = { .can_id = CAN_ERR_FLAG, .can_dlc = CAN_ERR_DLC };
struct can_frame *cf;
struct can_frame tmp_cf = { .can_id = CAN_ERR_FLAG,
.can_dlc = CAN_ERR_DLC };
struct sk_buff *skb;
struct net_device_stats *stats;
struct kvaser_usb_net_priv *priv;
......@@ -873,7 +728,7 @@ static void kvaser_usb_rx_error(const struct kvaser_usb *dev,
* frame ID and data to userspace. Remove stack allocation afterwards.
*/
old_state = priv->can.state;
kvaser_usb_rx_error_update_can_state(priv, es, &tmp_cf);
kvaser_usb_leaf_rx_error_update_can_state(priv, es, &tmp_cf);
new_state = priv->can.state;
skb = alloc_can_err_skb(priv->netdev, &cf);
......@@ -887,19 +742,20 @@ static void kvaser_usb_rx_error(const struct kvaser_usb *dev,
if (es->status &
(M16C_STATE_BUS_OFF | M16C_STATE_BUS_RESET)) {
if (!priv->can.restart_ms)
kvaser_usb_simple_cmd_async(priv, CMD_STOP_CHIP);
kvaser_usb_leaf_simple_cmd_async(priv,
CMD_STOP_CHIP);
netif_carrier_off(priv->netdev);
}
if (priv->can.restart_ms &&
(old_state >= CAN_STATE_BUS_OFF) &&
(new_state < CAN_STATE_BUS_OFF)) {
old_state >= CAN_STATE_BUS_OFF &&
new_state < CAN_STATE_BUS_OFF) {
cf->can_id |= CAN_ERR_RESTARTED;
netif_carrier_on(priv->netdev);
}
}
switch (dev->family) {
switch (dev->card_data.leaf.family) {
case KVASER_LEAF:
if (es->leaf.error_factor) {
cf->can_id |= CAN_ERR_BUSERROR | CAN_ERR_PROT;
......@@ -921,9 +777,8 @@ static void kvaser_usb_rx_error(const struct kvaser_usb *dev,
}
break;
case KVASER_USBCAN:
if (es->usbcan.error_state & USBCAN_ERROR_STATE_BUSERROR) {
if (es->usbcan.error_state & USBCAN_ERROR_STATE_BUSERROR)
cf->can_id |= CAN_ERR_BUSERROR;
}
break;
}
......@@ -938,11 +793,12 @@ static void kvaser_usb_rx_error(const struct kvaser_usb *dev,
/* For USBCAN, report error to userspace if the channels's errors counter
* has changed, or we're the only channel seeing a bus error state.
*/
static void kvaser_usbcan_conditionally_rx_error(const struct kvaser_usb *dev,
struct kvaser_usb_error_summary *es)
static void
kvaser_usb_leaf_usbcan_conditionally_rx_error(const struct kvaser_usb *dev,
struct kvaser_usb_err_summary *es)
{
struct kvaser_usb_net_priv *priv;
int channel;
unsigned int channel;
bool report_error;
channel = es->channel;
......@@ -970,22 +826,22 @@ static void kvaser_usbcan_conditionally_rx_error(const struct kvaser_usb *dev,
}
if (report_error)
kvaser_usb_rx_error(dev, es);
kvaser_usb_leaf_rx_error(dev, es);
}
static void kvaser_usbcan_rx_error(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
static void kvaser_usb_leaf_usbcan_rx_error(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
{
struct kvaser_usb_error_summary es = { };
struct kvaser_usb_err_summary es = { };
switch (cmd->id) {
/* Sometimes errors are sent as unsolicited chip state events */
case CMD_CHIP_STATE_EVENT:
es.channel = cmd->u.usbcan.chip_state_event.channel;
es.status = cmd->u.usbcan.chip_state_event.status;
es.status = cmd->u.usbcan.chip_state_event.status;
es.txerr = cmd->u.usbcan.chip_state_event.tx_errors_count;
es.rxerr = cmd->u.usbcan.chip_state_event.rx_errors_count;
kvaser_usbcan_conditionally_rx_error(dev, &es);
kvaser_usb_leaf_usbcan_conditionally_rx_error(dev, &es);
break;
case CMD_CAN_ERROR_EVENT:
......@@ -995,7 +851,7 @@ static void kvaser_usbcan_rx_error(const struct kvaser_usb *dev,
es.rxerr = cmd->u.usbcan.error_event.rx_errors_count_ch0;
es.usbcan.other_ch_status =
cmd->u.usbcan.error_event.status_ch1;
kvaser_usbcan_conditionally_rx_error(dev, &es);
kvaser_usb_leaf_usbcan_conditionally_rx_error(dev, &es);
/* The USBCAN firmware supports up to 2 channels.
* Now that ch0 was checked, check if ch1 has any errors.
......@@ -1003,11 +859,13 @@ static void kvaser_usbcan_rx_error(const struct kvaser_usb *dev,
if (dev->nchannels == MAX_USBCAN_NET_DEVICES) {
es.channel = 1;
es.status = cmd->u.usbcan.error_event.status_ch1;
es.txerr = cmd->u.usbcan.error_event.tx_errors_count_ch1;
es.rxerr = cmd->u.usbcan.error_event.rx_errors_count_ch1;
es.txerr =
cmd->u.usbcan.error_event.tx_errors_count_ch1;
es.rxerr =
cmd->u.usbcan.error_event.rx_errors_count_ch1;
es.usbcan.other_ch_status =
cmd->u.usbcan.error_event.status_ch0;
kvaser_usbcan_conditionally_rx_error(dev, &es);
kvaser_usb_leaf_usbcan_conditionally_rx_error(dev, &es);
}
break;
......@@ -1016,15 +874,15 @@ static void kvaser_usbcan_rx_error(const struct kvaser_usb *dev,
}
}
static void kvaser_leaf_rx_error(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
static void kvaser_usb_leaf_leaf_rx_error(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
{
struct kvaser_usb_error_summary es = { };
struct kvaser_usb_err_summary es = { };
switch (cmd->id) {
case CMD_CAN_ERROR_EVENT:
es.channel = cmd->u.leaf.error_event.channel;
es.status = cmd->u.leaf.error_event.status;
es.status = cmd->u.leaf.error_event.status;
es.txerr = cmd->u.leaf.error_event.tx_errors_count;
es.rxerr = cmd->u.leaf.error_event.rx_errors_count;
es.leaf.error_factor = cmd->u.leaf.error_event.error_factor;
......@@ -1038,7 +896,7 @@ static void kvaser_leaf_rx_error(const struct kvaser_usb *dev,
break;
case CMD_CHIP_STATE_EVENT:
es.channel = cmd->u.leaf.chip_state_event.channel;
es.status = cmd->u.leaf.chip_state_event.status;
es.status = cmd->u.leaf.chip_state_event.status;
es.txerr = cmd->u.leaf.chip_state_event.tx_errors_count;
es.rxerr = cmd->u.leaf.chip_state_event.rx_errors_count;
es.leaf.error_factor = 0;
......@@ -1048,18 +906,16 @@ static void kvaser_leaf_rx_error(const struct kvaser_usb *dev,
return;
}
kvaser_usb_rx_error(dev, &es);
kvaser_usb_leaf_rx_error(dev, &es);
}
static void kvaser_usb_rx_can_err(const struct kvaser_usb_net_priv *priv,
const struct kvaser_cmd *cmd)
static void kvaser_usb_leaf_rx_can_err(const struct kvaser_usb_net_priv *priv,
const struct kvaser_cmd *cmd)
{
struct can_frame *cf;
struct sk_buff *skb;
struct net_device_stats *stats = &priv->netdev->stats;
if (cmd->u.rx_can_header.flag & (MSG_FLAG_ERROR_FRAME |
MSG_FLAG_NERR)) {
struct net_device_stats *stats = &priv->netdev->stats;
netdev_err(priv->netdev, "Unknown error (flags: 0x%02x)\n",
cmd->u.rx_can_header.flag);
......@@ -1067,27 +923,12 @@ static void kvaser_usb_rx_can_err(const struct kvaser_usb_net_priv *priv,
return;
}
if (cmd->u.rx_can_header.flag & MSG_FLAG_OVERRUN) {
stats->rx_over_errors++;
stats->rx_errors++;
skb = alloc_can_err_skb(priv->netdev, &cf);
if (!skb) {
stats->rx_dropped++;
return;
}
cf->can_id |= CAN_ERR_CRTL;
cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
stats->rx_packets++;
stats->rx_bytes += cf->can_dlc;
netif_rx(skb);
}
if (cmd->u.rx_can_header.flag & MSG_FLAG_OVERRUN)
kvaser_usb_can_rx_over_error(priv->netdev);
}
static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
static void kvaser_usb_leaf_rx_can_msg(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
{
struct kvaser_usb_net_priv *priv;
struct can_frame *cf;
......@@ -1106,22 +947,23 @@ static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev,
stats = &priv->netdev->stats;
if ((cmd->u.rx_can_header.flag & MSG_FLAG_ERROR_FRAME) &&
(dev->family == KVASER_LEAF && cmd->id == CMD_LEAF_LOG_MESSAGE)) {
kvaser_leaf_rx_error(dev, cmd);
(dev->card_data.leaf.family == KVASER_LEAF &&
cmd->id == CMD_LEAF_LOG_MESSAGE)) {
kvaser_usb_leaf_leaf_rx_error(dev, cmd);
return;
} else if (cmd->u.rx_can_header.flag & (MSG_FLAG_ERROR_FRAME |
MSG_FLAG_NERR |
MSG_FLAG_OVERRUN)) {
kvaser_usb_rx_can_err(priv, cmd);
kvaser_usb_leaf_rx_can_err(priv, cmd);
return;
} else if (cmd->u.rx_can_header.flag & ~MSG_FLAG_REMOTE_FRAME) {
netdev_warn(priv->netdev,
"Unhandled frame (flags: 0x%02x)",
"Unhandled frame (flags: 0x%02x)\n",
cmd->u.rx_can_header.flag);
return;
}
switch (dev->family) {
switch (dev->card_data.leaf.family) {
case KVASER_LEAF:
rx_data = cmd->u.leaf.rx_can.data;
break;
......@@ -1136,7 +978,8 @@ static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev,
return;
}
if (dev->family == KVASER_LEAF && cmd->id == CMD_LEAF_LOG_MESSAGE) {
if (dev->card_data.leaf.family == KVASER_LEAF && cmd->id ==
CMD_LEAF_LOG_MESSAGE) {
cf->can_id = le32_to_cpu(cmd->u.leaf.log_message.id);
if (cf->can_id & KVASER_EXTENDED_FRAME)
cf->can_id &= CAN_EFF_MASK | CAN_EFF_FLAG;
......@@ -1174,8 +1017,8 @@ static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev,
netif_rx(skb);
}
static void kvaser_usb_start_chip_reply(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
static void kvaser_usb_leaf_start_chip_reply(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
{
struct kvaser_usb_net_priv *priv;
u8 channel = cmd->u.simple.channel;
......@@ -1197,8 +1040,8 @@ static void kvaser_usb_start_chip_reply(const struct kvaser_usb *dev,
}
}
static void kvaser_usb_stop_chip_reply(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
static void kvaser_usb_leaf_stop_chip_reply(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
{
struct kvaser_usb_net_priv *priv;
u8 channel = cmd->u.simple.channel;
......@@ -1214,49 +1057,49 @@ static void kvaser_usb_stop_chip_reply(const struct kvaser_usb *dev,
complete(&priv->stop_comp);
}
static void kvaser_usb_handle_cmd(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
static void kvaser_usb_leaf_handle_command(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
{
switch (cmd->id) {
case CMD_START_CHIP_REPLY:
kvaser_usb_start_chip_reply(dev, cmd);
kvaser_usb_leaf_start_chip_reply(dev, cmd);
break;
case CMD_STOP_CHIP_REPLY:
kvaser_usb_stop_chip_reply(dev, cmd);
kvaser_usb_leaf_stop_chip_reply(dev, cmd);
break;
case CMD_RX_STD_MESSAGE:
case CMD_RX_EXT_MESSAGE:
kvaser_usb_rx_can_msg(dev, cmd);
kvaser_usb_leaf_rx_can_msg(dev, cmd);
break;
case CMD_LEAF_LOG_MESSAGE:
if (dev->family != KVASER_LEAF)
if (dev->card_data.leaf.family != KVASER_LEAF)
goto warn;
kvaser_usb_rx_can_msg(dev, cmd);
kvaser_usb_leaf_rx_can_msg(dev, cmd);
break;
case CMD_CHIP_STATE_EVENT:
case CMD_CAN_ERROR_EVENT:
if (dev->family == KVASER_LEAF)
kvaser_leaf_rx_error(dev, cmd);
if (dev->card_data.leaf.family == KVASER_LEAF)
kvaser_usb_leaf_leaf_rx_error(dev, cmd);
else
kvaser_usbcan_rx_error(dev, cmd);
kvaser_usb_leaf_usbcan_rx_error(dev, cmd);
break;
case CMD_TX_ACKNOWLEDGE:
kvaser_usb_tx_acknowledge(dev, cmd);
kvaser_usb_leaf_tx_acknowledge(dev, cmd);
break;
/* Ignored commands */
case CMD_USBCAN_CLOCK_OVERFLOW_EVENT:
if (dev->family != KVASER_USBCAN)
if (dev->card_data.leaf.family != KVASER_USBCAN)
goto warn;
break;
case CMD_FLUSH_QUEUE_REPLY:
if (dev->family != KVASER_LEAF)
if (dev->card_data.leaf.family != KVASER_LEAF)
goto warn;
break;
......@@ -1266,28 +1109,14 @@ warn: dev_warn(&dev->intf->dev, "Unhandled command (%d)\n", cmd->id);
}
}
static void kvaser_usb_read_bulk_callback(struct urb *urb)
static void kvaser_usb_leaf_read_bulk_callback(struct kvaser_usb *dev,
void *buf, int len)
{
struct kvaser_usb *dev = urb->context;
struct kvaser_cmd *cmd;
int pos = 0;
int err, i;
switch (urb->status) {
case 0:
break;
case -ENOENT:
case -EPIPE:
case -EPROTO:
case -ESHUTDOWN:
return;
default:
dev_info(&dev->intf->dev, "Rx URB aborted (%d)\n", urb->status);
goto resubmit_urb;
}
while (pos <= (int)(urb->actual_length - CMD_HEADER_LEN)) {
cmd = urb->transfer_buffer + pos;
while (pos <= len - CMD_HEADER_LEN) {
cmd = buf + pos;
/* The Kvaser firmware can only read and write commands that
* does not cross the USB's endpoint wMaxPacketSize boundary.
......@@ -1299,108 +1128,22 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb)
* number of events in case of a heavy rx load on the bus.
*/
if (cmd->len == 0) {
pos = round_up(pos, le16_to_cpu(dev->bulk_in->
wMaxPacketSize));
pos = round_up(pos, le16_to_cpu
(dev->bulk_in->wMaxPacketSize));
continue;
}
if (pos + cmd->len > urb->actual_length) {
if (pos + cmd->len > len) {
dev_err_ratelimited(&dev->intf->dev, "Format error\n");
break;
}
kvaser_usb_handle_cmd(dev, cmd);
kvaser_usb_leaf_handle_command(dev, cmd);
pos += cmd->len;
}
resubmit_urb:
usb_fill_bulk_urb(urb, dev->udev,
usb_rcvbulkpipe(dev->udev,
dev->bulk_in->bEndpointAddress),
urb->transfer_buffer, RX_BUFFER_SIZE,
kvaser_usb_read_bulk_callback, dev);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err == -ENODEV) {
for (i = 0; i < dev->nchannels; i++) {
if (!dev->nets[i])
continue;
netif_device_detach(dev->nets[i]->netdev);
}
} else if (err) {
dev_err(&dev->intf->dev,
"Failed resubmitting read bulk urb: %d\n", err);
}
}
static int kvaser_usb_setup_rx_urbs(struct kvaser_usb *dev)
{
int i, err = 0;
if (dev->rxinitdone)
return 0;
for (i = 0; i < MAX_RX_URBS; i++) {
struct urb *urb = NULL;
u8 *buf = NULL;
dma_addr_t buf_dma;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
err = -ENOMEM;
break;
}
buf = usb_alloc_coherent(dev->udev, RX_BUFFER_SIZE,
GFP_KERNEL, &buf_dma);
if (!buf) {
dev_warn(&dev->intf->dev,
"No memory left for USB buffer\n");
usb_free_urb(urb);
err = -ENOMEM;
break;
}
usb_fill_bulk_urb(urb, dev->udev,
usb_rcvbulkpipe(dev->udev,
dev->bulk_in->bEndpointAddress),
buf, RX_BUFFER_SIZE,
kvaser_usb_read_bulk_callback,
dev);
urb->transfer_dma = buf_dma;
urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
usb_anchor_urb(urb, &dev->rx_submitted);
err = usb_submit_urb(urb, GFP_KERNEL);
if (err) {
usb_unanchor_urb(urb);
usb_free_coherent(dev->udev, RX_BUFFER_SIZE, buf,
buf_dma);
usb_free_urb(urb);
break;
}
dev->rxbuf[i] = buf;
dev->rxbuf_dma[i] = buf_dma;
usb_free_urb(urb);
}
if (i == 0) {
dev_warn(&dev->intf->dev, "Cannot setup read URBs, error %d\n",
err);
return err;
} else if (i < MAX_RX_URBS) {
dev_warn(&dev->intf->dev, "RX performances may be slow\n");
}
dev->rxinitdone = true;
return 0;
}
static int kvaser_usb_set_opt_mode(const struct kvaser_usb_net_priv *priv)
static int kvaser_usb_leaf_set_opt_mode(const struct kvaser_usb_net_priv *priv)
{
struct kvaser_cmd *cmd;
int rc;
......@@ -1419,20 +1162,20 @@ static int kvaser_usb_set_opt_mode(const struct kvaser_usb_net_priv *priv)
else
cmd->u.ctrl_mode.ctrl_mode = KVASER_CTRL_MODE_NORMAL;
rc = kvaser_usb_send_cmd(priv->dev, cmd);
rc = kvaser_usb_send_cmd(priv->dev, cmd, cmd->len);
kfree(cmd);
return rc;
}
static int kvaser_usb_start_chip(struct kvaser_usb_net_priv *priv)
static int kvaser_usb_leaf_start_chip(struct kvaser_usb_net_priv *priv)
{
int err;
init_completion(&priv->start_comp);
err = kvaser_usb_send_simple_cmd(priv->dev, CMD_START_CHIP,
priv->channel);
err = kvaser_usb_leaf_send_simple_cmd(priv->dev, CMD_START_CHIP,
priv->channel);
if (err)
return err;
......@@ -1443,86 +1186,14 @@ static int kvaser_usb_start_chip(struct kvaser_usb_net_priv *priv)
return 0;
}
static int kvaser_usb_open(struct net_device *netdev)
{
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
struct kvaser_usb *dev = priv->dev;
int err;
err = open_candev(netdev);
if (err)
return err;
err = kvaser_usb_setup_rx_urbs(dev);
if (err)
goto error;
err = kvaser_usb_set_opt_mode(priv);
if (err)
goto error;
err = kvaser_usb_start_chip(priv);
if (err) {
netdev_warn(netdev, "Cannot start device, error %d\n", err);
goto error;
}
priv->can.state = CAN_STATE_ERROR_ACTIVE;
return 0;
error:
close_candev(netdev);
return err;
}
static void kvaser_usb_reset_tx_urb_contexts(struct kvaser_usb_net_priv *priv)
{
int i, max_tx_urbs;
max_tx_urbs = priv->dev->max_tx_urbs;
priv->active_tx_contexts = 0;
for (i = 0; i < max_tx_urbs; i++)
priv->tx_contexts[i].echo_index = max_tx_urbs;
}
/* This method might sleep. Do not call it in the atomic context
* of URB completions.
*/
static void kvaser_usb_unlink_tx_urbs(struct kvaser_usb_net_priv *priv)
{
usb_kill_anchored_urbs(&priv->tx_submitted);
kvaser_usb_reset_tx_urb_contexts(priv);
}
static void kvaser_usb_unlink_all_urbs(struct kvaser_usb *dev)
{
int i;
usb_kill_anchored_urbs(&dev->rx_submitted);
for (i = 0; i < MAX_RX_URBS; i++)
usb_free_coherent(dev->udev, RX_BUFFER_SIZE,
dev->rxbuf[i],
dev->rxbuf_dma[i]);
for (i = 0; i < dev->nchannels; i++) {
struct kvaser_usb_net_priv *priv = dev->nets[i];
if (priv)
kvaser_usb_unlink_tx_urbs(priv);
}
}
static int kvaser_usb_stop_chip(struct kvaser_usb_net_priv *priv)
static int kvaser_usb_leaf_stop_chip(struct kvaser_usb_net_priv *priv)
{
int err;
init_completion(&priv->stop_comp);
err = kvaser_usb_send_simple_cmd(priv->dev, CMD_STOP_CHIP,
priv->channel);
err = kvaser_usb_leaf_send_simple_cmd(priv->dev, CMD_STOP_CHIP,
priv->channel);
if (err)
return err;
......@@ -1533,7 +1204,12 @@ static int kvaser_usb_stop_chip(struct kvaser_usb_net_priv *priv)
return 0;
}
static int kvaser_usb_flush_queue(struct kvaser_usb_net_priv *priv)
static int kvaser_usb_leaf_reset_chip(struct kvaser_usb *dev, int channel)
{
return kvaser_usb_leaf_send_simple_cmd(dev, CMD_RESET_CHIP, channel);
}
static int kvaser_usb_leaf_flush_queue(struct kvaser_usb_net_priv *priv)
{
struct kvaser_cmd *cmd;
int rc;
......@@ -1547,204 +1223,23 @@ static int kvaser_usb_flush_queue(struct kvaser_usb_net_priv *priv)
cmd->u.flush_queue.channel = priv->channel;
cmd->u.flush_queue.flags = 0x00;
rc = kvaser_usb_send_cmd(priv->dev, cmd);
rc = kvaser_usb_send_cmd(priv->dev, cmd, cmd->len);
kfree(cmd);
return rc;
}
static int kvaser_usb_close(struct net_device *netdev)
static int kvaser_usb_leaf_init_card(struct kvaser_usb *dev)
{
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
struct kvaser_usb *dev = priv->dev;
int err;
netif_stop_queue(netdev);
struct kvaser_usb_dev_card_data *card_data = &dev->card_data;
err = kvaser_usb_flush_queue(priv);
if (err)
netdev_warn(netdev, "Cannot flush queue, error %d\n", err);
err = kvaser_usb_send_simple_cmd(dev, CMD_RESET_CHIP, priv->channel);
if (err)
netdev_warn(netdev, "Cannot reset card, error %d\n", err);
err = kvaser_usb_stop_chip(priv);
if (err)
netdev_warn(netdev, "Cannot stop device, error %d\n", err);
/* reset tx contexts */
kvaser_usb_unlink_tx_urbs(priv);
priv->can.state = CAN_STATE_STOPPED;
close_candev(priv->netdev);
dev->cfg = &kvaser_usb_leaf_dev_cfg;
card_data->ctrlmode_supported |= CAN_CTRLMODE_3_SAMPLES;
return 0;
}
static void kvaser_usb_write_bulk_callback(struct urb *urb)
{
struct kvaser_usb_tx_urb_context *context = urb->context;
struct kvaser_usb_net_priv *priv;
struct net_device *netdev;
if (WARN_ON(!context))
return;
priv = context->priv;
netdev = priv->netdev;
kfree(urb->transfer_buffer);
if (!netif_device_present(netdev))
return;
if (urb->status)
netdev_info(netdev, "Tx URB aborted (%d)\n", urb->status);
}
static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb,
struct net_device *netdev)
{
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
struct kvaser_usb *dev = priv->dev;
struct net_device_stats *stats = &netdev->stats;
struct can_frame *cf = (struct can_frame *)skb->data;
struct kvaser_usb_tx_urb_context *context = NULL;
struct urb *urb;
void *buf;
struct kvaser_cmd *cmd;
int i, err, ret = NETDEV_TX_OK;
u8 *cmd_tx_can_flags = NULL; /* GCC */
unsigned long flags;
if (can_dropped_invalid_skb(netdev, skb))
return NETDEV_TX_OK;
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb) {
stats->tx_dropped++;
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
buf = kmalloc(sizeof(struct kvaser_cmd), GFP_ATOMIC);
if (!buf) {
stats->tx_dropped++;
dev_kfree_skb(skb);
goto freeurb;
}
cmd = buf;
cmd->len = CMD_HEADER_LEN + sizeof(struct kvaser_cmd_tx_can);
cmd->u.tx_can.channel = priv->channel;
switch (dev->family) {
case KVASER_LEAF:
cmd_tx_can_flags = &cmd->u.tx_can.leaf.flags;
break;
case KVASER_USBCAN:
cmd_tx_can_flags = &cmd->u.tx_can.usbcan.flags;
break;
}
*cmd_tx_can_flags = 0;
if (cf->can_id & CAN_EFF_FLAG) {
cmd->id = CMD_TX_EXT_MESSAGE;
cmd->u.tx_can.data[0] = (cf->can_id >> 24) & 0x1f;
cmd->u.tx_can.data[1] = (cf->can_id >> 18) & 0x3f;
cmd->u.tx_can.data[2] = (cf->can_id >> 14) & 0x0f;
cmd->u.tx_can.data[3] = (cf->can_id >> 6) & 0xff;
cmd->u.tx_can.data[4] = cf->can_id & 0x3f;
} else {
cmd->id = CMD_TX_STD_MESSAGE;
cmd->u.tx_can.data[0] = (cf->can_id >> 6) & 0x1f;
cmd->u.tx_can.data[1] = cf->can_id & 0x3f;
}
cmd->u.tx_can.data[5] = cf->can_dlc;
memcpy(&cmd->u.tx_can.data[6], cf->data, cf->can_dlc);
if (cf->can_id & CAN_RTR_FLAG)
*cmd_tx_can_flags |= MSG_FLAG_REMOTE_FRAME;
spin_lock_irqsave(&priv->tx_contexts_lock, flags);
for (i = 0; i < dev->max_tx_urbs; i++) {
if (priv->tx_contexts[i].echo_index == dev->max_tx_urbs) {
context = &priv->tx_contexts[i];
context->echo_index = i;
can_put_echo_skb(skb, netdev, context->echo_index);
++priv->active_tx_contexts;
if (priv->active_tx_contexts >= dev->max_tx_urbs)
netif_stop_queue(netdev);
break;
}
}
spin_unlock_irqrestore(&priv->tx_contexts_lock, flags);
/* This should never happen; it implies a flow control bug */
if (!context) {
netdev_warn(netdev, "cannot find free context\n");
kfree(buf);
ret = NETDEV_TX_BUSY;
goto freeurb;
}
context->priv = priv;
context->dlc = cf->can_dlc;
cmd->u.tx_can.tid = context->echo_index;
usb_fill_bulk_urb(urb, dev->udev,
usb_sndbulkpipe(dev->udev,
dev->bulk_out->bEndpointAddress),
buf, cmd->len,
kvaser_usb_write_bulk_callback, context);
usb_anchor_urb(urb, &priv->tx_submitted);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (unlikely(err)) {
spin_lock_irqsave(&priv->tx_contexts_lock, flags);
can_free_echo_skb(netdev, context->echo_index);
context->echo_index = dev->max_tx_urbs;
--priv->active_tx_contexts;
netif_wake_queue(netdev);
spin_unlock_irqrestore(&priv->tx_contexts_lock, flags);
usb_unanchor_urb(urb);
kfree(buf);
stats->tx_dropped++;
if (err == -ENODEV)
netif_device_detach(netdev);
else
netdev_warn(netdev, "Failed tx_urb %d\n", err);
goto freeurb;
}
ret = NETDEV_TX_OK;
freeurb:
usb_free_urb(urb);
return ret;
}
static const struct net_device_ops kvaser_usb_netdev_ops = {
.ndo_open = kvaser_usb_open,
.ndo_stop = kvaser_usb_close,
.ndo_start_xmit = kvaser_usb_start_xmit,
.ndo_change_mtu = can_change_mtu,
};
static const struct can_bittiming_const kvaser_usb_bittiming_const = {
static const struct can_bittiming_const kvaser_usb_leaf_bittiming_const = {
.name = "kvaser_usb",
.tseg1_min = KVASER_USB_TSEG1_MIN,
.tseg1_max = KVASER_USB_TSEG1_MAX,
......@@ -1756,7 +1251,7 @@ static const struct can_bittiming_const kvaser_usb_bittiming_const = {
.brp_inc = KVASER_USB_BRP_INC,
};
static int kvaser_usb_set_bittiming(struct net_device *netdev)
static int kvaser_usb_leaf_set_bittiming(struct net_device *netdev)
{
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
struct can_bittiming *bt = &priv->can.bittiming;
......@@ -1782,21 +1277,21 @@ static int kvaser_usb_set_bittiming(struct net_device *netdev)
else
cmd->u.busparams.no_samp = 1;
rc = kvaser_usb_send_cmd(dev, cmd);
rc = kvaser_usb_send_cmd(dev, cmd, cmd->len);
kfree(cmd);
return rc;
}
static int kvaser_usb_set_mode(struct net_device *netdev,
enum can_mode mode)
static int kvaser_usb_leaf_set_mode(struct net_device *netdev,
enum can_mode mode)
{
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
int err;
switch (mode) {
case CAN_MODE_START:
err = kvaser_usb_simple_cmd_async(priv, CMD_START_CHIP);
err = kvaser_usb_leaf_simple_cmd_async(priv, CMD_START_CHIP);
if (err)
return err;
break;
......@@ -1807,8 +1302,8 @@ static int kvaser_usb_set_mode(struct net_device *netdev,
return 0;
}
static int kvaser_usb_get_berr_counter(const struct net_device *netdev,
struct can_berr_counter *bec)
static int kvaser_usb_leaf_get_berr_counter(const struct net_device *netdev,
struct can_berr_counter *bec)
{
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
......@@ -1817,93 +1312,7 @@ static int kvaser_usb_get_berr_counter(const struct net_device *netdev,
return 0;
}
static void kvaser_usb_remove_interfaces(struct kvaser_usb *dev)
{
int i;
for (i = 0; i < dev->nchannels; i++) {
if (!dev->nets[i])
continue;
unregister_candev(dev->nets[i]->netdev);
}
kvaser_usb_unlink_all_urbs(dev);
for (i = 0; i < dev->nchannels; i++) {
if (!dev->nets[i])
continue;
free_candev(dev->nets[i]->netdev);
}
}
static int kvaser_usb_init_one(struct kvaser_usb *dev,
const struct usb_device_id *id, int channel)
{
struct net_device *netdev;
struct kvaser_usb_net_priv *priv;
int err;
err = kvaser_usb_send_simple_cmd(dev, CMD_RESET_CHIP, channel);
if (err)
return err;
netdev = alloc_candev(sizeof(*priv) +
dev->max_tx_urbs * sizeof(*priv->tx_contexts),
dev->max_tx_urbs);
if (!netdev) {
dev_err(&dev->intf->dev, "Cannot alloc candev\n");
return -ENOMEM;
}
priv = netdev_priv(netdev);
init_usb_anchor(&priv->tx_submitted);
init_completion(&priv->start_comp);
init_completion(&priv->stop_comp);
priv->dev = dev;
priv->netdev = netdev;
priv->channel = channel;
spin_lock_init(&priv->tx_contexts_lock);
kvaser_usb_reset_tx_urb_contexts(priv);
priv->can.state = CAN_STATE_STOPPED;
priv->can.clock.freq = CAN_USB_CLOCK;
priv->can.bittiming_const = &kvaser_usb_bittiming_const;
priv->can.do_set_bittiming = kvaser_usb_set_bittiming;
priv->can.do_set_mode = kvaser_usb_set_mode;
if (id->driver_info & KVASER_HAS_TXRX_ERRORS)
priv->can.do_get_berr_counter = kvaser_usb_get_berr_counter;
priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES;
if (id->driver_info & KVASER_HAS_SILENT_MODE)
priv->can.ctrlmode_supported |= CAN_CTRLMODE_LISTENONLY;
netdev->flags |= IFF_ECHO;
netdev->netdev_ops = &kvaser_usb_netdev_ops;
SET_NETDEV_DEV(netdev, &dev->intf->dev);
netdev->dev_id = channel;
dev->nets[channel] = priv;
err = register_candev(netdev);
if (err) {
dev_err(&dev->intf->dev, "Failed to register CAN device\n");
free_candev(netdev);
dev->nets[channel] = NULL;
return err;
}
netdev_dbg(netdev, "device registered\n");
return 0;
}
static int kvaser_usb_setup_endpoints(struct kvaser_usb *dev)
static int kvaser_usb_leaf_setup_endpoints(struct kvaser_usb *dev)
{
const struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
......@@ -1928,103 +1337,27 @@ static int kvaser_usb_setup_endpoints(struct kvaser_usb *dev)
return -ENODEV;
}
static int kvaser_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct kvaser_usb *dev;
int err = -ENOMEM;
int i, retry = 3;
dev = devm_kzalloc(&intf->dev, sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
if (kvaser_is_leaf(id)) {
dev->family = KVASER_LEAF;
} else if (kvaser_is_usbcan(id)) {
dev->family = KVASER_USBCAN;
} else {
dev_err(&intf->dev,
"Product ID (%d) does not belong to any known Kvaser USB family",
id->idProduct);
return -ENODEV;
}
dev->intf = intf;
err = kvaser_usb_setup_endpoints(dev);
if (err) {
dev_err(&intf->dev, "Cannot get usb endpoint(s)");
return err;
}
dev->udev = interface_to_usbdev(intf);
init_usb_anchor(&dev->rx_submitted);
usb_set_intfdata(intf, dev);
/* On some x86 laptops, plugging a Kvaser device again after
* an unplug makes the firmware always ignore the very first
* command. For such a case, provide some room for retries
* instead of completely exiting the driver.
*/
do {
err = kvaser_usb_get_software_info(dev);
} while (--retry && err == -ETIMEDOUT);
if (err) {
dev_err(&intf->dev,
"Cannot get software infos, error %d\n", err);
return err;
}
dev_dbg(&intf->dev, "Firmware version: %d.%d.%d\n",
((dev->fw_version >> 24) & 0xff),
((dev->fw_version >> 16) & 0xff),
(dev->fw_version & 0xffff));
dev_dbg(&intf->dev, "Max outstanding tx = %d URBs\n", dev->max_tx_urbs);
err = kvaser_usb_get_card_info(dev);
if (err) {
dev_err(&intf->dev,
"Cannot get card infos, error %d\n", err);
return err;
}
for (i = 0; i < dev->nchannels; i++) {
err = kvaser_usb_init_one(dev, id, i);
if (err) {
kvaser_usb_remove_interfaces(dev);
return err;
}
}
return 0;
}
static void kvaser_usb_disconnect(struct usb_interface *intf)
{
struct kvaser_usb *dev = usb_get_intfdata(intf);
usb_set_intfdata(intf, NULL);
if (!dev)
return;
kvaser_usb_remove_interfaces(dev);
}
static struct usb_driver kvaser_usb_driver = {
.name = "kvaser_usb",
.probe = kvaser_usb_probe,
.disconnect = kvaser_usb_disconnect,
.id_table = kvaser_usb_table,
const struct kvaser_usb_dev_ops kvaser_usb_leaf_dev_ops = {
.dev_set_mode = kvaser_usb_leaf_set_mode,
.dev_set_bittiming = kvaser_usb_leaf_set_bittiming,
.dev_get_berr_counter = kvaser_usb_leaf_get_berr_counter,
.dev_setup_endpoints = kvaser_usb_leaf_setup_endpoints,
.dev_init_card = kvaser_usb_leaf_init_card,
.dev_get_software_info = kvaser_usb_leaf_get_software_info,
.dev_get_card_info = kvaser_usb_leaf_get_card_info,
.dev_set_opt_mode = kvaser_usb_leaf_set_opt_mode,
.dev_start_chip = kvaser_usb_leaf_start_chip,
.dev_stop_chip = kvaser_usb_leaf_stop_chip,
.dev_reset_chip = kvaser_usb_leaf_reset_chip,
.dev_flush_queue = kvaser_usb_leaf_flush_queue,
.dev_read_bulk_callback = kvaser_usb_leaf_read_bulk_callback,
.dev_frame_to_cmd = kvaser_usb_leaf_frame_to_cmd,
};
module_usb_driver(kvaser_usb_driver);
MODULE_AUTHOR("Olivier Sobrie <olivier@sobrie.be>");
MODULE_DESCRIPTION("CAN driver for Kvaser CAN/USB devices");
MODULE_LICENSE("GPL v2");
static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_dev_cfg = {
.clock = {
.freq = CAN_USB_CLOCK,
},
.timestamp_freq = 1,
.bittiming_const = &kvaser_usb_leaf_bittiming_const,
};
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