struct net_device *netdev;
int channel;
- struct completion start_comp, stop_comp, flush_comp;
+ struct completion start_comp, stop_comp, flush_comp,
+ get_busparams_comp;
struct usb_anchor tx_submitted;
+ struct kvaser_usb_busparams busparams_nominal, busparams_data;
+
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_busparams: readback arbitration busparams
* @dev_set_data_bittiming: used for can.do_set_data_bittiming
+ * @dev_get_data_busparams: readback data busparams
* @dev_get_berr_counter: used for can.do_get_berr_counter
*
* @dev_setup_endpoints: setup USB in and out endpoints
*/
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_set_data_bittiming)(struct net_device *netdev);
+ int (*dev_set_bittiming)(const struct net_device *netdev,
+ const struct kvaser_usb_busparams *busparams);
+ int (*dev_get_busparams)(struct kvaser_usb_net_priv *priv);
+ int (*dev_set_data_bittiming)(const struct net_device *netdev,
+ const struct kvaser_usb_busparams *busparams);
+ int (*dev_get_data_busparams)(struct kvaser_usb_net_priv *priv);
int (*dev_get_berr_counter)(const struct net_device *netdev,
struct can_berr_counter *bec);
int (*dev_setup_endpoints)(struct kvaser_usb *dev);
if (err)
return err;
- err = kvaser_usb_setup_rx_urbs(dev);
- if (err)
- goto error;
-
err = ops->dev_set_opt_mode(priv);
if (err)
goto error;
return 0;
}
+static int kvaser_usb_set_bittiming(struct net_device *netdev)
+{
+ struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
+ struct kvaser_usb *dev = priv->dev;
+ const struct kvaser_usb_dev_ops *ops = dev->driver_info->ops;
+ struct can_bittiming *bt = &priv->can.bittiming;
+
+ struct kvaser_usb_busparams busparams;
+ int tseg1 = bt->prop_seg + bt->phase_seg1;
+ int tseg2 = bt->phase_seg2;
+ int sjw = bt->sjw;
+ int err = -EOPNOTSUPP;
+
+ busparams.bitrate = cpu_to_le32(bt->bitrate);
+ busparams.sjw = (u8)sjw;
+ busparams.tseg1 = (u8)tseg1;
+ busparams.tseg2 = (u8)tseg2;
+ if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES)
+ busparams.nsamples = 3;
+ else
+ busparams.nsamples = 1;
+
+ err = ops->dev_set_bittiming(netdev, &busparams);
+ if (err)
+ return err;
+
+ err = kvaser_usb_setup_rx_urbs(priv->dev);
+ if (err)
+ return err;
+
+ err = ops->dev_get_busparams(priv);
+ if (err) {
+ /* Treat EOPNOTSUPP as success */
+ if (err == -EOPNOTSUPP)
+ err = 0;
+ return err;
+ }
+
+ if (memcmp(&busparams, &priv->busparams_nominal,
+ sizeof(priv->busparams_nominal)) != 0)
+ err = -EINVAL;
+
+ return err;
+}
+
+static int kvaser_usb_set_data_bittiming(struct net_device *netdev)
+{
+ struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
+ struct kvaser_usb *dev = priv->dev;
+ const struct kvaser_usb_dev_ops *ops = dev->driver_info->ops;
+ struct can_bittiming *dbt = &priv->can.data_bittiming;
+
+ struct kvaser_usb_busparams busparams;
+ int tseg1 = dbt->prop_seg + dbt->phase_seg1;
+ int tseg2 = dbt->phase_seg2;
+ int sjw = dbt->sjw;
+ int err;
+
+ if (!ops->dev_set_data_bittiming ||
+ !ops->dev_get_data_busparams)
+ return -EOPNOTSUPP;
+
+ busparams.bitrate = cpu_to_le32(dbt->bitrate);
+ busparams.sjw = (u8)sjw;
+ busparams.tseg1 = (u8)tseg1;
+ busparams.tseg2 = (u8)tseg2;
+ busparams.nsamples = 1;
+
+ err = ops->dev_set_data_bittiming(netdev, &busparams);
+ if (err)
+ return err;
+
+ err = kvaser_usb_setup_rx_urbs(priv->dev);
+ if (err)
+ return err;
+
+ err = ops->dev_get_data_busparams(priv);
+ if (err)
+ return err;
+
+ if (memcmp(&busparams, &priv->busparams_data,
+ sizeof(priv->busparams_data)) != 0)
+ err = -EINVAL;
+
+ return err;
+}
+
static void kvaser_usb_write_bulk_callback(struct urb *urb)
{
struct kvaser_usb_tx_urb_context *context = urb->context;
init_completion(&priv->start_comp);
init_completion(&priv->stop_comp);
init_completion(&priv->flush_comp);
+ init_completion(&priv->get_busparams_comp);
priv->can.ctrlmode_supported = 0;
priv->dev = dev;
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 = ops->dev_set_bittiming;
+ priv->can.do_set_bittiming = kvaser_usb_set_bittiming;
priv->can.do_set_mode = ops->dev_set_mode;
if ((driver_info->quirks & KVASER_USB_QUIRK_HAS_TXRX_ERRORS) ||
(priv->dev->card_data.capabilities & KVASER_USB_CAP_BERR_CAP))
if (priv->can.ctrlmode_supported & CAN_CTRLMODE_FD) {
priv->can.data_bittiming_const = dev->cfg->data_bittiming_const;
- priv->can.do_set_data_bittiming = ops->dev_set_data_bittiming;
+ priv->can.do_set_data_bittiming = kvaser_usb_set_data_bittiming;
}
netdev->flags |= IFF_ECHO;
/* Minihydra command IDs */
#define CMD_SET_BUSPARAMS_REQ 16
+#define CMD_GET_BUSPARAMS_REQ 17
+#define CMD_GET_BUSPARAMS_RESP 18
#define CMD_GET_CHIP_STATE_REQ 19
#define CMD_CHIP_STATE_EVENT 20
#define CMD_SET_DRIVERMODE_REQ 21
#define KVASER_USB_HYDRA_BUS_MODE_CANFD_ISO 0x01
#define KVASER_USB_HYDRA_BUS_MODE_NONISO 0x02
struct kvaser_cmd_set_busparams {
- struct kvaser_usb_busparams busparams_arb;
+ struct kvaser_usb_busparams busparams_nominal;
u8 reserved0[4];
struct kvaser_usb_busparams busparams_data;
u8 canfd_mode;
u8 reserved1[7];
} __packed;
+/* Busparam type */
+#define KVASER_USB_HYDRA_BUSPARAM_TYPE_CAN 0x00
+#define KVASER_USB_HYDRA_BUSPARAM_TYPE_CANFD 0x01
+struct kvaser_cmd_get_busparams_req {
+ u8 type;
+ u8 reserved[27];
+} __packed;
+
+struct kvaser_cmd_get_busparams_res {
+ struct kvaser_usb_busparams busparams;
+ u8 reserved[20];
+} __packed;
+
/* Ctrl modes */
#define KVASER_USB_HYDRA_CTRLMODE_NORMAL 0x01
#define KVASER_USB_HYDRA_CTRLMODE_LISTEN 0x02
struct kvaser_cmd_error_event error_event;
struct kvaser_cmd_set_busparams set_busparams_req;
+ struct kvaser_cmd_get_busparams_req get_busparams_req;
+ struct kvaser_cmd_get_busparams_res get_busparams_res;
struct kvaser_cmd_chip_state_event chip_state_event;
} __packed;
} __packed;
+struct kvaser_usb_net_hydra_priv {
+ int pending_get_busparams_type;
+};
+
static const struct can_bittiming_const kvaser_usb_hydra_kcan_bittiming_c = {
.name = "kvaser_usb_kcan",
.tseg1_min = 1,
complete(&priv->flush_comp);
}
+static void kvaser_usb_hydra_get_busparams_reply(const struct kvaser_usb *dev,
+ const struct kvaser_cmd *cmd)
+{
+ struct kvaser_usb_net_priv *priv;
+ struct kvaser_usb_net_hydra_priv *hydra;
+
+ priv = kvaser_usb_hydra_net_priv_from_cmd(dev, cmd);
+ if (!priv)
+ return;
+
+ hydra = priv->sub_priv;
+ if (!hydra)
+ return;
+
+ switch (hydra->pending_get_busparams_type) {
+ case KVASER_USB_HYDRA_BUSPARAM_TYPE_CAN:
+ memcpy(&priv->busparams_nominal, &cmd->get_busparams_res.busparams,
+ sizeof(priv->busparams_nominal));
+ break;
+ case KVASER_USB_HYDRA_BUSPARAM_TYPE_CANFD:
+ memcpy(&priv->busparams_data, &cmd->get_busparams_res.busparams,
+ sizeof(priv->busparams_nominal));
+ break;
+ default:
+ dev_warn(&dev->intf->dev, "Unknown get_busparams_type %d\n",
+ hydra->pending_get_busparams_type);
+ break;
+ }
+ hydra->pending_get_busparams_type = -1;
+
+ complete(&priv->get_busparams_comp);
+}
+
static void
kvaser_usb_hydra_bus_status_to_can_state(const struct kvaser_usb_net_priv *priv,
u8 bus_status,
kvaser_usb_hydra_state_event(dev, cmd);
break;
+ case CMD_GET_BUSPARAMS_RESP:
+ kvaser_usb_hydra_get_busparams_reply(dev, cmd);
+ break;
+
case CMD_ERROR_EVENT:
kvaser_usb_hydra_error_event(dev, cmd);
break;
return err;
}
-static int kvaser_usb_hydra_set_bittiming(struct net_device *netdev)
+static int kvaser_usb_hydra_get_busparams(struct kvaser_usb_net_priv *priv,
+ int busparams_type)
+{
+ struct kvaser_usb *dev = priv->dev;
+ struct kvaser_usb_net_hydra_priv *hydra = priv->sub_priv;
+ struct kvaser_cmd *cmd;
+ int err;
+
+ if (!hydra)
+ return -EINVAL;
+
+ cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_KERNEL);
+ if (!cmd)
+ return -ENOMEM;
+
+ cmd->header.cmd_no = CMD_GET_BUSPARAMS_REQ;
+ kvaser_usb_hydra_set_cmd_dest_he
+ (cmd, dev->card_data.hydra.channel_to_he[priv->channel]);
+ kvaser_usb_hydra_set_cmd_transid
+ (cmd, kvaser_usb_hydra_get_next_transid(dev));
+ cmd->get_busparams_req.type = busparams_type;
+ hydra->pending_get_busparams_type = busparams_type;
+
+ reinit_completion(&priv->get_busparams_comp);
+
+ err = kvaser_usb_send_cmd(dev, cmd, kvaser_usb_hydra_cmd_size(cmd));
+ if (err)
+ return err;
+
+ if (!wait_for_completion_timeout(&priv->get_busparams_comp,
+ msecs_to_jiffies(KVASER_USB_TIMEOUT)))
+ return -ETIMEDOUT;
+
+ return err;
+}
+
+static int kvaser_usb_hydra_get_nominal_busparams(struct kvaser_usb_net_priv *priv)
+{
+ return kvaser_usb_hydra_get_busparams(priv, KVASER_USB_HYDRA_BUSPARAM_TYPE_CAN);
+}
+
+static int kvaser_usb_hydra_get_data_busparams(struct kvaser_usb_net_priv *priv)
+{
+ return kvaser_usb_hydra_get_busparams(priv, KVASER_USB_HYDRA_BUSPARAM_TYPE_CANFD);
+}
+
+static int kvaser_usb_hydra_set_bittiming(const struct net_device *netdev,
+ const struct kvaser_usb_busparams *busparams)
{
struct kvaser_cmd *cmd;
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
- struct can_bittiming *bt = &priv->can.bittiming;
struct kvaser_usb *dev = priv->dev;
- int tseg1 = bt->prop_seg + bt->phase_seg1;
- int tseg2 = bt->phase_seg2;
- int sjw = bt->sjw;
int err;
cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_KERNEL);
return -ENOMEM;
cmd->header.cmd_no = CMD_SET_BUSPARAMS_REQ;
- cmd->set_busparams_req.busparams_arb.bitrate = cpu_to_le32(bt->bitrate);
- cmd->set_busparams_req.busparams_arb.sjw = (u8)sjw;
- cmd->set_busparams_req.busparams_arb.tseg1 = (u8)tseg1;
- cmd->set_busparams_req.busparams_arb.tseg2 = (u8)tseg2;
- cmd->set_busparams_req.busparams_arb.nsamples = 1;
+ memcpy(&cmd->set_busparams_req.busparams_nominal, busparams,
+ sizeof(cmd->set_busparams_req.busparams_nominal));
kvaser_usb_hydra_set_cmd_dest_he
(cmd, dev->card_data.hydra.channel_to_he[priv->channel]);
return err;
}
-static int kvaser_usb_hydra_set_data_bittiming(struct net_device *netdev)
+static int kvaser_usb_hydra_set_data_bittiming(const struct net_device *netdev,
+ const struct kvaser_usb_busparams *busparams)
{
struct kvaser_cmd *cmd;
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
- struct can_bittiming *dbt = &priv->can.data_bittiming;
struct kvaser_usb *dev = priv->dev;
- int tseg1 = dbt->prop_seg + dbt->phase_seg1;
- int tseg2 = dbt->phase_seg2;
- int sjw = dbt->sjw;
int err;
cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_KERNEL);
return -ENOMEM;
cmd->header.cmd_no = CMD_SET_BUSPARAMS_FD_REQ;
- cmd->set_busparams_req.busparams_data.bitrate = cpu_to_le32(dbt->bitrate);
- cmd->set_busparams_req.busparams_data.sjw = (u8)sjw;
- cmd->set_busparams_req.busparams_data.tseg1 = (u8)tseg1;
- cmd->set_busparams_req.busparams_data.tseg2 = (u8)tseg2;
- cmd->set_busparams_req.busparams_data.nsamples = 1;
+ memcpy(&cmd->set_busparams_req.busparams_data, busparams,
+ sizeof(cmd->set_busparams_req.busparams_data));
if (priv->can.ctrlmode & CAN_CTRLMODE_FD) {
if (priv->can.ctrlmode & CAN_CTRLMODE_FD_NON_ISO)
return 0;
}
+static int kvaser_usb_hydra_init_channel(struct kvaser_usb_net_priv *priv)
+{
+ struct kvaser_usb_net_hydra_priv *hydra;
+
+ hydra = devm_kzalloc(&priv->dev->intf->dev, sizeof(*hydra), GFP_KERNEL);
+ if (!hydra)
+ return -ENOMEM;
+
+ priv->sub_priv = hydra;
+
+ return 0;
+}
+
static int kvaser_usb_hydra_get_software_info(struct kvaser_usb *dev)
{
struct kvaser_cmd cmd;
const struct kvaser_usb_dev_ops kvaser_usb_hydra_dev_ops = {
.dev_set_mode = kvaser_usb_hydra_set_mode,
.dev_set_bittiming = kvaser_usb_hydra_set_bittiming,
+ .dev_get_busparams = kvaser_usb_hydra_get_nominal_busparams,
.dev_set_data_bittiming = kvaser_usb_hydra_set_data_bittiming,
+ .dev_get_data_busparams = kvaser_usb_hydra_get_data_busparams,
.dev_get_berr_counter = kvaser_usb_hydra_get_berr_counter,
.dev_setup_endpoints = kvaser_usb_hydra_setup_endpoints,
.dev_init_card = kvaser_usb_hydra_init_card,
+ .dev_init_channel = kvaser_usb_hydra_init_channel,
.dev_get_software_info = kvaser_usb_hydra_get_software_info,
.dev_get_software_details = kvaser_usb_hydra_get_software_details,
.dev_get_card_info = kvaser_usb_hydra_get_card_info,
#define CMD_RX_EXT_MESSAGE 14
#define CMD_TX_EXT_MESSAGE 15
#define CMD_SET_BUS_PARAMS 16
+#define CMD_GET_BUS_PARAMS 17
+#define CMD_GET_BUS_PARAMS_REPLY 18
#define CMD_GET_CHIP_STATE 19
#define CMD_CHIP_STATE_EVENT 20
#define CMD_SET_CTRL_MODE 21
[CMD_CHIP_STATE_EVENT] = kvaser_fsize(u.leaf.chip_state_event),
[CMD_CAN_ERROR_EVENT] = kvaser_fsize(u.leaf.can_error_event),
[CMD_GET_CAPABILITIES_RESP] = kvaser_fsize(u.leaf.cap_res),
+ [CMD_GET_BUS_PARAMS_REPLY] = kvaser_fsize(u.busparams),
[CMD_ERROR_EVENT] = kvaser_fsize(u.leaf.error_event),
/* ignored events: */
[CMD_FLUSH_QUEUE_REPLY] = CMD_SIZE_ANY,
complete(&priv->stop_comp);
}
+static void kvaser_usb_leaf_get_busparams_reply(const struct kvaser_usb *dev,
+ const struct kvaser_cmd *cmd)
+{
+ struct kvaser_usb_net_priv *priv;
+ u8 channel = cmd->u.busparams.channel;
+
+ if (channel >= dev->nchannels) {
+ dev_err(&dev->intf->dev,
+ "Invalid channel number (%d)\n", channel);
+ return;
+ }
+
+ priv = dev->nets[channel];
+ memcpy(&priv->busparams_nominal, &cmd->u.busparams.busparams,
+ sizeof(priv->busparams_nominal));
+
+ complete(&priv->get_busparams_comp);
+}
+
static void kvaser_usb_leaf_handle_command(const struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
{
kvaser_usb_leaf_error_event(dev, cmd);
break;
+ case CMD_GET_BUS_PARAMS_REPLY:
+ kvaser_usb_leaf_get_busparams_reply(dev, cmd);
+ break;
+
/* Ignored commands */
case CMD_USBCAN_CLOCK_OVERFLOW_EVENT:
if (dev->driver_info->family != KVASER_USBCAN)
cancel_delayed_work_sync(&leaf->chip_state_req_work);
}
-static int kvaser_usb_leaf_set_bittiming(struct net_device *netdev)
+static int kvaser_usb_leaf_set_bittiming(const struct net_device *netdev,
+ const struct kvaser_usb_busparams *busparams)
{
struct kvaser_usb_net_priv *priv = netdev_priv(netdev);
- struct can_bittiming *bt = &priv->can.bittiming;
struct kvaser_usb *dev = priv->dev;
struct kvaser_cmd *cmd;
int rc;
cmd->len = CMD_HEADER_LEN + sizeof(struct kvaser_cmd_busparams);
cmd->u.busparams.channel = priv->channel;
cmd->u.busparams.tid = 0xff;
- cmd->u.busparams.busparams.bitrate = cpu_to_le32(bt->bitrate);
- cmd->u.busparams.busparams.sjw = bt->sjw;
- cmd->u.busparams.busparams.tseg1 = bt->prop_seg + bt->phase_seg1;
- cmd->u.busparams.busparams.tseg2 = bt->phase_seg2;
-
- if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES)
- cmd->u.busparams.busparams.nsamples = 3;
- else
- cmd->u.busparams.busparams.nsamples = 1;
+ memcpy(&cmd->u.busparams.busparams, busparams,
+ sizeof(cmd->u.busparams.busparams));
rc = kvaser_usb_send_cmd(dev, cmd, cmd->len);
return rc;
}
+static int kvaser_usb_leaf_get_busparams(struct kvaser_usb_net_priv *priv)
+{
+ int err;
+
+ if (priv->dev->driver_info->family == KVASER_USBCAN)
+ return -EOPNOTSUPP;
+
+ reinit_completion(&priv->get_busparams_comp);
+
+ err = kvaser_usb_leaf_send_simple_cmd(priv->dev, CMD_GET_BUS_PARAMS,
+ priv->channel);
+ if (err)
+ return err;
+
+ if (!wait_for_completion_timeout(&priv->get_busparams_comp,
+ msecs_to_jiffies(KVASER_USB_TIMEOUT)))
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
static int kvaser_usb_leaf_set_mode(struct net_device *netdev,
enum can_mode mode)
{
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_busparams = kvaser_usb_leaf_get_busparams,
.dev_set_data_bittiming = NULL,
+ .dev_get_data_busparams = NULL,
.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,
projects / platform / kernel / linux-rpi.git / commitdiff