commit 49f274c72357d2d74cba70b172cf369768909707 upstream.
Unify and move compile-time known information into new struct kvaser_usb_driver_info, in favor of run-time checks.
All Kvaser USBcanII supports listen-only mode and error counter reporting.
Link: https://lore.kernel.org/all/20220603083820.800246-2-extja@kvaser.com Suggested-by: Marc Kleine-Budde mkl@pengutronix.de Cc: stable@vger.kernel.org Signed-off-by: Jimmy Assarsson extja@kvaser.com --- drivers/net/can/usb/kvaser_usb.c | 175 ++++++++++++++++--------------- 1 file changed, 93 insertions(+), 82 deletions(-)
diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c index 103601395e07..af60789e68db 100644 --- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -62,27 +62,15 @@ #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
-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) +/* Kvaser USB device quirks */ +#define KVASER_USB_QUIRK_HAS_SILENT_MODE BIT(0) +#define KVASER_USB_QUIRK_HAS_TXRX_ERRORS BIT(1)
/* Message header size */ #define MSG_HEADER_LEN 2 @@ -461,6 +449,7 @@ struct kvaser_usb_tx_urb_context { struct kvaser_usb { struct usb_device *udev; struct kvaser_usb_net_priv *nets[MAX_NET_DEVICES]; + const struct kvaser_usb_driver_info *driver_info; const struct kvaser_usb_dev_cfg *cfg;
struct usb_endpoint_descriptor *bulk_in, *bulk_out; @@ -473,7 +462,6 @@ struct kvaser_usb { u32 fw_version; unsigned int nchannels; unsigned int max_tx_urbs; - enum kvaser_usb_family family;
bool rxinitdone; void *rxbuf[MAX_RX_URBS]; @@ -496,6 +484,11 @@ struct kvaser_usb_net_priv { struct kvaser_usb_tx_urb_context tx_contexts[]; };
+struct kvaser_usb_driver_info { + u32 quirks; + enum kvaser_usb_family family; +}; + struct kvaser_usb_dev_cfg { const struct can_clock clock; const struct can_bittiming_const * const bittiming_const; @@ -541,70 +534,90 @@ static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_dev_cfg_32mhz = { .bittiming_const = &kvaser_usb_bittiming_const, };
+static const struct kvaser_usb_driver_info kvaser_usb_driver_info_usbcan = { + .quirks = KVASER_USB_QUIRK_HAS_TXRX_ERRORS | + KVASER_USB_QUIRK_HAS_SILENT_MODE, + .family = KVASER_USBCAN, +}; + +static const struct kvaser_usb_driver_info kvaser_usb_driver_info_leaf = { + .quirks = 0, + .family = KVASER_LEAF, +}; + +static const struct kvaser_usb_driver_info kvaser_usb_driver_info_leaf_err = { + .quirks = KVASER_USB_QUIRK_HAS_TXRX_ERRORS, + .family = KVASER_LEAF, +}; + +static const struct kvaser_usb_driver_info kvaser_usb_driver_info_leaf_err_listen = { + .quirks = KVASER_USB_QUIRK_HAS_TXRX_ERRORS | + KVASER_USB_QUIRK_HAS_SILENT_MODE, + .family = KVASER_LEAF, +}; + 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_DEVEL_PRODUCT_ID), + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf }, + { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_PRODUCT_ID), + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf }, { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS | - KVASER_HAS_SILENT_MODE }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err_listen }, { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS | - KVASER_HAS_SILENT_MODE }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err_listen }, { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_LS_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS | - KVASER_HAS_SILENT_MODE }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err_listen }, { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_SWC_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS | - KVASER_HAS_SILENT_MODE }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err_listen }, { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_LIN_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS | - KVASER_HAS_SILENT_MODE }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err_listen }, { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_LS_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS | - KVASER_HAS_SILENT_MODE }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err_listen }, { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_SPRO_SWC_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS | - KVASER_HAS_SILENT_MODE }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err_listen }, { USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_DEVEL_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS | - KVASER_HAS_SILENT_MODE }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err_listen }, { USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_HSHS_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS | - KVASER_HAS_SILENT_MODE }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err_listen }, { 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) }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err }, + { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_GI_PRODUCT_ID), + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf }, { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_PRO_OBDII_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS | - KVASER_HAS_SILENT_MODE }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err_listen }, { USB_DEVICE(KVASER_VENDOR_ID, USB_MEMO2_HSLS_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err }, { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_CH_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err }, { USB_DEVICE(KVASER_VENDOR_ID, USB_BLACKBIRD_SPRO_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err }, { USB_DEVICE(KVASER_VENDOR_ID, USB_OEM_MERCURY_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err }, { USB_DEVICE(KVASER_VENDOR_ID, USB_OEM_LEAF_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err }, { 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) }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf_err }, + { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_V2_PRODUCT_ID), + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf }, + { USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_HS_PRODUCT_ID), + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf }, + { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LIGHT_HS_V2_OEM_PRODUCT_ID), + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf }, + { USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN_LIGHT_2HS_PRODUCT_ID), + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf }, + { USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_2HS_PRODUCT_ID), + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_leaf },
/* USBCANII family IDs */ { USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN2_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_usbcan }, { USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN_REVB_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_usbcan }, { USB_DEVICE(KVASER_VENDOR_ID, USB_MEMORATOR_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_usbcan }, { USB_DEVICE(KVASER_VENDOR_ID, USB_VCI2_PRODUCT_ID), - .driver_info = KVASER_HAS_TXRX_ERRORS }, + .driver_info = (kernel_ulong_t)&kvaser_usb_driver_info_usbcan },
{ } }; @@ -737,7 +750,7 @@ static int kvaser_usb_get_software_info(struct kvaser_usb *dev) if (err) return err;
- switch (dev->family) { + switch (dev->driver_info->family) { case KVASER_LEAF: kvaser_usb_get_software_info_leaf(dev, &msg.u.leaf.softinfo); break; @@ -767,7 +780,7 @@ static int kvaser_usb_get_card_info(struct kvaser_usb *dev)
dev->nchannels = msg.u.cardinfo.nchannels; if ((dev->nchannels > MAX_NET_DEVICES) || - (dev->family == KVASER_USBCAN && + (dev->driver_info->family == KVASER_USBCAN && dev->nchannels > MAX_USBCAN_NET_DEVICES)) return -EINVAL;
@@ -938,7 +951,7 @@ static void kvaser_usb_rx_error_update_can_state(struct kvaser_usb_net_priv *pri priv->can.can_stats.restarts++; }
- switch (dev->family) { + switch (dev->driver_info->family) { case KVASER_LEAF: if (es->leaf.error_factor) { priv->can.can_stats.bus_error++; @@ -1015,7 +1028,7 @@ static void kvaser_usb_rx_error(const struct kvaser_usb *dev, } }
- switch (dev->family) { + switch (dev->driver_info->family) { case KVASER_LEAF: if (es->leaf.error_factor) { cf->can_id |= CAN_ERR_BUSERROR | CAN_ERR_PROT; @@ -1224,7 +1237,8 @@ static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev, stats = &priv->netdev->stats;
if ((msg->u.rx_can_header.flag & MSG_FLAG_ERROR_FRAME) && - (dev->family == KVASER_LEAF && msg->id == CMD_LEAF_LOG_MESSAGE)) { + (dev->driver_info->family == KVASER_LEAF && + msg->id == CMD_LEAF_LOG_MESSAGE)) { kvaser_leaf_rx_error(dev, msg); return; } else if (msg->u.rx_can_header.flag & (MSG_FLAG_ERROR_FRAME | @@ -1239,7 +1253,7 @@ static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev, return; }
- switch (dev->family) { + switch (dev->driver_info->family) { case KVASER_LEAF: rx_msg = msg->u.leaf.rx_can.msg; break; @@ -1254,7 +1268,8 @@ static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev, return; }
- if (dev->family == KVASER_LEAF && msg->id == CMD_LEAF_LOG_MESSAGE) { + if (dev->driver_info->family == KVASER_LEAF && msg->id == + CMD_LEAF_LOG_MESSAGE) { cf->can_id = le32_to_cpu(msg->u.leaf.log_message.id); if (cf->can_id & KVASER_EXTENDED_FRAME) cf->can_id &= CAN_EFF_MASK | CAN_EFF_FLAG; @@ -1351,14 +1366,14 @@ static void kvaser_usb_handle_message(const struct kvaser_usb *dev, break;
case CMD_LEAF_LOG_MESSAGE: - if (dev->family != KVASER_LEAF) + if (dev->driver_info->family != KVASER_LEAF) goto warn; kvaser_usb_rx_can_msg(dev, msg); break;
case CMD_CHIP_STATE_EVENT: case CMD_CAN_ERROR_EVENT: - if (dev->family == KVASER_LEAF) + if (dev->driver_info->family == KVASER_LEAF) kvaser_leaf_rx_error(dev, msg); else kvaser_usbcan_rx_error(dev, msg); @@ -1370,12 +1385,12 @@ static void kvaser_usb_handle_message(const struct kvaser_usb *dev,
/* Ignored messages */ case CMD_USBCAN_CLOCK_OVERFLOW_EVENT: - if (dev->family != KVASER_USBCAN) + if (dev->driver_info->family != KVASER_USBCAN) goto warn; break;
case CMD_FLUSH_QUEUE_REPLY: - if (dev->family != KVASER_LEAF) + if (dev->driver_info->family != KVASER_LEAF) goto warn; break;
@@ -1764,7 +1779,7 @@ static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb, msg->len = MSG_HEADER_LEN + sizeof(struct kvaser_msg_tx_can); msg->u.tx_can.channel = priv->channel;
- switch (dev->family) { + switch (dev->driver_info->family) { case KVASER_LEAF: msg_tx_can_flags = &msg->u.tx_can.leaf.flags; break; @@ -1951,12 +1966,12 @@ static void kvaser_usb_remove_interfaces(struct kvaser_usb *dev) } }
-static int kvaser_usb_init_one(struct usb_interface *intf, - const struct usb_device_id *id, int channel) +static int kvaser_usb_init_one(struct usb_interface *intf, int channel) { struct kvaser_usb *dev = usb_get_intfdata(intf); struct net_device *netdev; struct kvaser_usb_net_priv *priv; + const struct kvaser_usb_driver_info *driver_info = dev->driver_info; int err;
err = kvaser_usb_send_simple_msg(dev, CMD_RESET_CHIP, channel); @@ -1989,10 +2004,10 @@ static int kvaser_usb_init_one(struct usb_interface *intf, priv->can.bittiming_const = dev->cfg->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) + if (driver_info->quirks & KVASER_USB_QUIRK_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) + if (driver_info->quirks & KVASER_USB_QUIRK_HAS_SILENT_MODE) priv->can.ctrlmode_supported |= CAN_CTRLMODE_LISTENONLY;
netdev->flags |= IFF_ECHO; @@ -2050,21 +2065,17 @@ static int kvaser_usb_probe(struct usb_interface *intf, struct kvaser_usb *dev; int err = -ENOMEM; int i, retry = 3; + const struct kvaser_usb_driver_info *driver_info; + + driver_info = (const struct kvaser_usb_driver_info *)id->driver_info; + if (!driver_info) + return -ENODEV;
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->driver_info = driver_info;
err = kvaser_usb_get_endpoints(intf, &dev->bulk_in, &dev->bulk_out); if (err) { @@ -2108,7 +2119,7 @@ static int kvaser_usb_probe(struct usb_interface *intf, }
for (i = 0; i < dev->nchannels; i++) { - err = kvaser_usb_init_one(intf, id, i); + err = kvaser_usb_init_one(intf, i); if (err) { kvaser_usb_remove_interfaces(dev); return err;