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Commit cddf5820 authored by Shrirang Bagul's avatar Shrirang Bagul Committed by Khalid Elmously
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UBUNTU: SAUCE: (no-up) Support IXXAT USB SocketCAN device 

BugLink: http://bugs.launchpad.net/bugs/1774563

This driver from IXXAT adds support for SocketCAN over USB.
 (https://www.ixxat.com)
Signed-off-by: default avatarShrirang Bagul <shrirang.bagul@canonical.com>
Acked-by: default avatarKleber Souza <kleber.souza@canonical.com>
Acked-by: default avatarStefan Bader <stefan.bader@canonical.com>
Signed-off-by: default avatarKhalid Elmously <khalid.elmously@canonical.com>
parent 909868d7
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ubuntu/Kconfig
View file @ cddf5820
...@@ -37,6 +37,10 @@ source "ubuntu/bnxt/Kconfig" ...@@ -37,6 +37,10 @@ source "ubuntu/bnxt/Kconfig"
## ##
## ##
## ##
source "ubuntu/ixxat/Kconfig"
##
##
##
## ##
## ##
## ##
......
ubuntu/Makefile
View file @ cddf5820
...@@ -49,6 +49,10 @@ obj-$(CONFIG_BNXT_BPO) += bnxt/ ...@@ -49,6 +49,10 @@ obj-$(CONFIG_BNXT_BPO) += bnxt/
## ##
## ##
## ##
obj-$(CONFIG_CAN_HMS_USB) += ixxat/
##
##
##
## ##
## ##
## ##
......
ubuntu/ixxat/Kconfig 0 → 100644
View file @ cddf5820
config CAN_HMS_USB
tristate "HMS USB SocketCAN"
depends on X86 || X86_64
depends on USB && CAN_DEV
---help---
This driver is from IXXAT and supports SocketCAN over USB.
(https://www.ixxat.com)
ubuntu/ixxat/Makefile 0 → 100644
View file @ cddf5820
mod-name += ixx_usb
obj-m += ixx_usb.o
ixx_usb-objs := ixx_usb_v2.o ixx_usb_fd.o ixx_usb_core.o
ubuntu/ixxat/ixx_usb_core.c 0 → 100644
View file @ cddf5820
/*
* CAN driver for IXXAT USB-to-CAN V2 adapters
*
* Copyright (C) 2003-2014 Michael Hengler IXXAT Automation GmbH
*
* Based on code originally by pcan_usb_core
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published
* by the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#include <linux/init.h>
#include <linux/signal.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/usb.h>
#include <linux/errno.h>
#include <linux/skbuff.h>
#include <linux/types.h>
#include <linux/can.h>
#include <linux/can/dev.h>
#include <linux/can/error.h>
#include <asm-generic/errno.h>
#include "ixx_usb_core.h"
MODULE_AUTHOR("Michael Hengler <mhengler@ixxat.de>");
MODULE_DESCRIPTION("CAN driver for IXXAT USB-to-CAN V2 adapters");
MODULE_LICENSE("GPL v2");
#define IXXAT_USB_DRIVER_NAME "ixx_usb"
#define IXXAT_USB_BUS_CAN 1 // CAN
#define IXXAT_USB_BUS_TYPE(BusCtrl) (u8) ( ((BusCtrl) >> 8) & 0x00FF )
#define IXXAT_USB_VENDOR_ID 0x08d8
#define IXXAT_USB_STATE_CONNECTED 0x00000001
#define IXXAT_USB_STATE_STARTED 0x00000002
/* Table of devices that work with this driver */
static struct usb_device_id ixxat_usb_table[] = {
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_CAN_V2_COMPACT_PRODUCT_ID)},
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_CAN_V2_EMBEDDED_PRODUCT_ID)},
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_CAN_V2_PROFESSIONAL_PRODUCT_ID)},
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_CAN_V2_AUTOMOTIVE_PRODUCT_ID)},
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_LIN_V2_PRODUCT_ID)},
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_KLINE_V2_PRODUCT_ID)},
#ifdef CANFD_CAPABLE
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_CAN_FD_AUTOMOTIVE_PRODUCT_ID)},
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_CAN_FD_COMPACT_PRODUCT_ID)},
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_CAN_FD_PROFESSIONAL_PRODUCT_ID)},
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_CAN_FD_PCIE_MINI_PRODUCT_ID)},
{USB_DEVICE(IXXAT_USB_VENDOR_ID, USB_TO_CAR_ID)},
{USB_DEVICE(IXXAT_USB_VENDOR_ID, DELL_EDGE_GW3002_PRODUCT_ID)},
#endif
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, ixxat_usb_table);
/* List of supported IXX-USB adapters (NULL terminated list) */
static struct ixx_usb_adapter *ixx_usb_adapters_list[] = {
&usb_to_can_v2_compact,
&usb_to_can_v2_automotive,
&usb_to_can_v2_embedded,
&usb_to_can_v2_professional,
&usb_to_can_v2_low_speed,
&usb_to_can_v2_extended,
#ifdef CANFD_CAPABLE
&usb_to_can_fd_automotive,
&usb_to_can_fd_compact,
&usb_to_can_fd_professional,
&usb_to_can_fd_pcie_mini,
&usb_to_car,
&dell_edge_gw3002,
#endif
NULL,
};
/*
* dump memory
*/
#define DUMP_WIDTH 16
void ixxat_dump_mem(char *prompt, void *p, int l)
{
pr_info("%s dumping %s (%d bytes):\n",
IXXAT_USB_DRIVER_NAME, prompt ? prompt : "memory", l);
print_hex_dump(KERN_INFO, IXXAT_USB_DRIVER_NAME " ", DUMP_PREFIX_NONE,
DUMP_WIDTH, 1, p, l, false);
}
static void ixxat_usb_add_us(struct timeval *tv, u64 delta_us)
{
/* number of s. to add to final time */
u32 delta_s = div_u64(delta_us, 1000000);
delta_us -= delta_s * 1000000;
tv->tv_usec += delta_us;
if (tv->tv_usec >= 1000000) {
tv->tv_usec -= 1000000;
delta_s++;
}
tv->tv_sec += delta_s;
}
void ixxat_usb_get_ts_tv(struct ixx_usb_device *dev, u32 ts, ktime_t *k_time)
{
struct timeval tv = dev->time_ref.tv_host_0;
if (ts < dev->time_ref.ts_dev_last) {
ixxat_usb_update_ts_now(dev, ts);
}
dev->time_ref.ts_dev_last = ts;
ixxat_usb_add_us(&tv, ts - dev->time_ref.ts_dev_0);
if(k_time)
*k_time = timeval_to_ktime(tv);
}
void ixxat_usb_update_ts_now(struct ixx_usb_device *dev, u32 hw_time_base)
{
u64 timebase;
timebase = (u64)0x00000000FFFFFFFF - (u64)dev->time_ref.ts_dev_0 + (u64)hw_time_base;
ixxat_usb_add_us(&dev->time_ref.tv_host_0, timebase);
dev->time_ref.ts_dev_0 = hw_time_base;
}
void ixxat_usb_set_ts_now(struct ixx_usb_device *dev, u32 hw_time_base)
{
dev->time_ref.ts_dev_0 = hw_time_base;
do_gettimeofday(&dev->time_ref.tv_host_0);
dev->time_ref.ts_dev_last = hw_time_base;
}
/*
* callback for bulk Rx urb
*/
static void ixxat_usb_read_bulk_callback(struct urb *urb)
{
struct ixx_usb_device *dev = urb->context;
struct net_device *netdev;
int err;
netdev = dev->netdev;
if (!netif_device_present(netdev))
return;
/* check reception status */
switch (urb->status) {
case 0:
/* success */
break;
case -EILSEQ:
case -ENOENT:
case -ECONNRESET:
case -ESHUTDOWN:
return;
default:
if (net_ratelimit())
netdev_err(netdev, "Rx urb aborted (%d)\n",
urb->status);
goto resubmit_urb;
}
/* protect from any incoming empty msgs */
if ((urb->actual_length > 0) && (dev->adapter->dev_decode_buf)) {
/* handle these kinds of msgs only if _start callback called */
if (dev->state & IXXAT_USB_STATE_STARTED)
err = dev->adapter->dev_decode_buf(dev, urb);
}
resubmit_urb: usb_fill_bulk_urb(urb, dev->udev,
usb_rcvbulkpipe(dev->udev, dev->ep_msg_in),
urb->transfer_buffer, dev->adapter->rx_buffer_size,
ixxat_usb_read_bulk_callback, dev);
usb_anchor_urb(urb, &dev->rx_submitted);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (!err)
return;
usb_unanchor_urb(urb);
if (err == -ENODEV)
netif_device_detach(netdev);
else
netdev_err(netdev, "failed resubmitting read bulk urb: %d\n",
err);
}
/*
* callback for bulk Tx urb
*/
static void ixxat_usb_write_bulk_callback(struct urb *urb)
{
struct ixx_tx_urb_context *context = urb->context;
struct ixx_usb_device *dev;
struct net_device *netdev;
BUG_ON(!context);
dev = context->dev;
netdev = dev->netdev;
atomic_dec(&dev->active_tx_urbs);
if (!netif_device_present(netdev))
return;
/* check tx status */
switch (urb->status) {
case 0:
/* transmission complete */
netdev->stats.tx_packets += context->count;
netdev->stats.tx_bytes += context->dlc;
/* prevent tx timeout */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
netif_trans_update(netdev);
#else
netdev->trans_start = jiffies;
#endif
break;
case -EPROTO:
case -ENOENT:
case -ECONNRESET:
case -ESHUTDOWN:
break;
default:
if (net_ratelimit())
netdev_err(netdev, "Tx urb aborted (%d)\n",
urb->status);
break;
}
/* should always release echo skb and corresponding context */
can_get_echo_skb(netdev, context->echo_index);
context->echo_index = IXXAT_USB_MAX_TX_URBS;
/* do wakeup tx queue in case of success only */
if (!urb->status)
netif_wake_queue(netdev);
}
/*
* called by netdev to send one skb on the CAN interface.
*/
static netdev_tx_t ixxat_usb_ndo_start_xmit(struct sk_buff *skb,
struct net_device *netdev)
{
struct ixx_usb_device *dev = netdev_priv(netdev);
struct ixx_tx_urb_context *context = NULL;
struct net_device_stats *stats = &netdev->stats;
struct canfd_frame *cf = (struct canfd_frame *) skb->data;
struct urb *urb;
u8 *obuf;
int i, err;
size_t size = dev->adapter->tx_buffer_size;
if (can_dropped_invalid_skb(netdev, skb))
return NETDEV_TX_OK;
for (i = 0; i < IXXAT_USB_MAX_TX_URBS; i++) {
if (dev->tx_contexts[i].echo_index == IXXAT_USB_MAX_TX_URBS) {
context = dev->tx_contexts + i;
break;
}
}
if (!context) {
/* should not occur except during restart */
return NETDEV_TX_BUSY;
}
urb = context->urb;
obuf = urb->transfer_buffer;
err = dev->adapter->dev_encode_msg(dev, skb, obuf, &size);
context->echo_index = i;
context->dlc = cf->len;
context->count = 1;
urb->transfer_buffer_length = size;
if (err) {
if (net_ratelimit())
netdev_err(netdev, "packet dropped\n");
dev_kfree_skb(skb);
stats->tx_dropped++;
return NETDEV_TX_OK;
}
usb_anchor_urb(urb, &dev->tx_submitted);
can_put_echo_skb(skb, netdev, context->echo_index);
atomic_inc(&dev->active_tx_urbs);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err) {
can_free_echo_skb(netdev, context->echo_index);
usb_unanchor_urb(urb);
/* this context is not used in fact */
context->echo_index = IXXAT_USB_MAX_TX_URBS;
atomic_dec(&dev->active_tx_urbs);
switch (err) {
case -ENODEV:
netif_device_detach(netdev);
break;
case -ENOENT:
/* cable unplugged */
stats->tx_dropped++;
break;
default:
stats->tx_dropped++;
netdev_warn(netdev, "tx urb submitting failed err=%d\n",
err);
}
} else {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
netif_trans_update(netdev);
#else
netdev->trans_start = jiffies;
#endif
/* slow down tx path */
if (atomic_read(&dev->active_tx_urbs) >= IXXAT_USB_MAX_TX_URBS)
netif_stop_queue(netdev);
}
return NETDEV_TX_OK;
}
/*
* start the CAN interface.
* Rx and Tx urbs are allocated here. Rx urbs are submitted here.
*/
static int ixxat_usb_start(struct ixx_usb_device *dev)
{
struct net_device *netdev = dev->netdev;
int err, i;
for (i = 0; i < IXXAT_USB_MAX_RX_URBS; i++) {
struct urb *urb;
u8 *buf;
/* create a URB, and a buffer for it, to receive usb messages */
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
netdev_err(netdev, "No memory left for URBs\n");
err = -ENOMEM;
break;
}
buf = kmalloc(dev->adapter->rx_buffer_size, GFP_KERNEL);
if (!buf) {
usb_free_urb(urb);
err = -ENOMEM;
break;
}
usb_fill_bulk_urb(urb, dev->udev,
usb_rcvbulkpipe(dev->udev, dev->ep_msg_in), buf,
dev->adapter->rx_buffer_size,
ixxat_usb_read_bulk_callback, dev);
/* ask last usb_free_urb() to also kfree() transfer_buffer */
urb->transfer_flags |= URB_FREE_BUFFER;
usb_anchor_urb(urb, &dev->rx_submitted);
err = usb_submit_urb(urb, GFP_KERNEL);
if (err) {
if (err == -ENODEV)
netif_device_detach(dev->netdev);
usb_unanchor_urb(urb);
kfree(buf);
usb_free_urb(urb);
break;
}
/* drop reference, USB core will take care of freeing it */
usb_free_urb(urb);
}
/* did we submit any URBs? Warn if we was not able to submit all urbs */
if (i < IXXAT_USB_MAX_RX_URBS) {
if (i == 0) {
netdev_err(netdev, "couldn't setup any rx URB\n");
return err;
}
netdev_warn(netdev, "rx performance may be slow\n");
}
/* pre-alloc tx buffers and corresponding urbs */
for (i = 0; i < IXXAT_USB_MAX_TX_URBS; i++) {
struct ixx_tx_urb_context *context;
struct urb *urb;
u8 *buf;
/* create a URB and a buffer for it, to transmit usb messages */
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
netdev_err(netdev, "No memory left for URBs\n");
err = -ENOMEM;
break;
}
buf = kmalloc(dev->adapter->tx_buffer_size, GFP_KERNEL);
if (!buf) {
usb_free_urb(urb);
err = -ENOMEM;
break;
}
context = dev->tx_contexts + i;
context->dev = dev;
context->urb = urb;
usb_fill_bulk_urb(urb, dev->udev,
usb_sndbulkpipe(dev->udev, dev->ep_msg_out),
buf, dev->adapter->tx_buffer_size,
ixxat_usb_write_bulk_callback, context);
/* ask last usb_free_urb() to also kfree() transfer_buffer */
urb->transfer_flags |= URB_FREE_BUFFER;
}
/* warn if we were not able to allocate enough tx contexts */
if (i < IXXAT_USB_MAX_TX_URBS) {
if (i == 0) {
netdev_err(netdev, "couldn't setup any tx URB\n");
goto err_tx;
}
netdev_warn(netdev, "tx performance may be slow\n");
}
if (dev->adapter->dev_start) {
err = dev->adapter->dev_start(dev);
if (err)
goto err_adapter;
}
dev->state |= IXXAT_USB_STATE_STARTED;
dev->can.state = CAN_STATE_ERROR_ACTIVE;
return 0;
err_adapter: if (err == -ENODEV)
netif_device_detach(dev->netdev);
netdev_warn(netdev, "couldn't submit control: %d\n", err);
for (i = 0; i < IXXAT_USB_MAX_TX_URBS; i++) {
usb_free_urb(dev->tx_contexts[i].urb);
dev->tx_contexts[i].urb = NULL;
}
err_tx: usb_kill_anchored_urbs(&dev->rx_submitted);
return err;
}
/*
* called by netdev to open the corresponding CAN interface.
*/
static int ixxat_usb_ndo_open(struct net_device *netdev)
{
struct ixx_usb_device *dev = netdev_priv(netdev);
int err;
/* common open */
err = open_candev(netdev);
if (err)
return err;
/* finally start device */
err = ixxat_usb_start(dev);
if (err) {
netdev_err(netdev, "couldn't start device: %d\n", err);
close_candev(netdev);
return err;
}
netif_start_queue(netdev);
return 0;
}
/*
* unlink in-flight Rx and Tx urbs and free their memory.
*/
static void ixxat_usb_unlink_all_urbs(struct ixx_usb_device *dev)
{
int i;
/* free all Rx (submitted) urbs */
usb_kill_anchored_urbs(&dev->rx_submitted);
/* free unsubmitted Tx urbs first */
for (i = 0; i < IXXAT_USB_MAX_TX_URBS; i++) {
struct urb *urb = dev->tx_contexts[i].urb;
if (!urb
|| dev->tx_contexts[i].echo_index
!= IXXAT_USB_MAX_TX_URBS) {
/*
* this urb is already released or always submitted,
* let usb core free by itself
*/
continue;
}
usb_free_urb(urb);
dev->tx_contexts[i].urb = NULL;
}
/* then free all submitted Tx urbs */
usb_kill_anchored_urbs(&dev->tx_submitted);
atomic_set(&dev->active_tx_urbs, 0);
}
/*
* called by netdev to close the corresponding CAN interface.
*/
static int ixxat_usb_ndo_stop(struct net_device *netdev)
{
struct ixx_usb_device *dev = netdev_priv(netdev);
dev->state &= ~IXXAT_USB_STATE_STARTED;
netif_stop_queue(netdev);
/* unlink all pending urbs and free used memory */
ixxat_usb_unlink_all_urbs(dev);
if (dev->adapter->dev_stop)
dev->adapter->dev_stop(dev);
close_candev(netdev);
dev->can.state = CAN_STATE_STOPPED;
return 0;
}
/*
* handle end of waiting for the device to reset
*/
void ixxat_usb_restart_complete(struct ixx_usb_device *dev)
{
/* finally MUST update can state */
dev->can.state = CAN_STATE_ERROR_ACTIVE;
/* netdev queue can be awaken now */
netif_wake_queue(dev->netdev);
}
void ixxat_usb_async_complete(struct urb *urb)
{
kfree(urb->transfer_buffer);
usb_free_urb(urb);
}
/*
* candev callback used to change CAN mode.
* Warning: this is called from a timer context!
*/
static int ixxat_usb_set_mode(struct net_device *netdev, enum can_mode mode)
{
struct ixx_usb_device *dev = netdev_priv(netdev);
int err = 0;
switch (mode) {
case CAN_MODE_START:
dev->restart_flag = 1;
wake_up_interruptible(&dev->wait_queue);
break;
default:
return -EOPNOTSUPP;
}
return err;
}
/*
* candev callback used to set device bitrate.
*/
static int ixxat_usb_set_bittiming(struct net_device *netdev)
{
struct ixx_usb_device* dev = (struct ixx_usb_device*) netdev_priv(
netdev);
struct can_bittiming *bt = &dev->can.bittiming;
if (dev->adapter->dev_set_bittiming) {
int err = dev->adapter->dev_set_bittiming(dev, bt);
if (err)
netdev_info(netdev, "couldn't set bitrate (err %d)\n",
err);
return err;
}
return 0;
}
/*
* candev callback used to set error counters.
*/
static int ixxat_usb_get_berr_counter(const struct net_device *netdev,
struct can_berr_counter *bec)
{
struct ixx_usb_device* dev = (struct ixx_usb_device*) netdev_priv(
netdev);
*bec = dev->bec;
return 0;
}
static const struct net_device_ops ixx_usb_netdev_ops = { .ndo_open =
ixxat_usb_ndo_open, .ndo_stop = ixxat_usb_ndo_stop,
.ndo_start_xmit = ixxat_usb_ndo_start_xmit,
#ifdef CANFD_CAPABLE
.ndo_change_mtu = can_change_mtu,
#endif
};
/*
* create one device which is attached to CAN controller #ctrl_idx of the
* usb adapter.
*/
static int ixxat_usb_create_dev(struct ixx_usb_adapter *ixx_usb_adapter,
struct usb_interface *intf, int ctrl_idx)
{
struct usb_device *usb_dev = interface_to_usbdev(intf);
int sizeof_candev = ixx_usb_adapter->sizeof_dev_private;
struct ixx_usb_device *dev;
struct net_device *netdev;
int i, err = 0, ep_off = 0;
u16 tmp16;
if (sizeof_candev < sizeof(struct ixx_usb_device))
sizeof_candev = sizeof(struct ixx_usb_device);
netdev = alloc_candev(sizeof_candev, IXXAT_USB_MAX_TX_URBS);
if (!netdev) {
dev_err(&intf->dev, "%s: couldn't alloc candev\n",
IXXAT_USB_DRIVER_NAME);
return -ENOMEM;
}
dev = netdev_priv(netdev);
dev->transmit_ptr = 0;
dev->transmit_dlc = 0;
dev->transmit_count = 0;
dev->restart_flag = 0;
dev->restart_task = 0;
dev->must_quit = 0;
init_waitqueue_head(&dev->wait_queue);
dev->ctrl_opened_count = 0;
dev->udev = usb_dev;
dev->netdev = netdev;
dev->adapter = ixx_usb_adapter;
dev->ctrl_idx = ctrl_idx;
dev->state = IXXAT_USB_STATE_CONNECTED;
ep_off = ixx_usb_adapter->has_bgi_ep ? 1 : 0;
/* Add +1 because of the bgi endpoint */
dev->ep_msg_in = ixx_usb_adapter->ep_msg_in[ctrl_idx+ep_off];
dev->ep_msg_out = ixx_usb_adapter->ep_msg_out[ctrl_idx+ep_off];
dev->can.clock = ixx_usb_adapter->clock;
dev->can.bittiming_const = &ixx_usb_adapter->bittiming_const;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 3)
dev->can.data_bittiming_const = &ixx_usb_adapter->data_bittiming_const;
#endif
dev->can.do_set_bittiming = ixxat_usb_set_bittiming;
dev->can.do_set_mode = ixxat_usb_set_mode;
dev->can.do_get_berr_counter = ixxat_usb_get_berr_counter;
dev->can.ctrlmode_supported = ixx_usb_adapter->ctrlmode_supported;
netdev->netdev_ops = &ixx_usb_netdev_ops;
netdev->flags |= IFF_ECHO; /* we support local echo */
init_usb_anchor(&dev->rx_submitted);
init_usb_anchor(&dev->tx_submitted);
atomic_set(&dev->active_tx_urbs, 0);
for (i = 0; i < IXXAT_USB_MAX_TX_URBS; i++)
dev->tx_contexts[i].echo_index = IXXAT_USB_MAX_TX_URBS;
dev->prev_siblings = usb_get_intfdata(intf);
usb_set_intfdata(intf, dev);
SET_NETDEV_DEV(netdev, &intf->dev);
err = register_candev(netdev);
if (err) {
dev_err(&intf->dev, "couldn't register CAN device: %d\n", err);
goto lbl_set_intf_data;
}
if (dev->prev_siblings)
(dev->prev_siblings)->next_siblings = dev;
/* keep hw revision into the netdevice */
tmp16 = le16_to_cpu(usb_dev->descriptor.bcdDevice);
dev->device_rev = tmp16 >> 8;
if (dev->adapter->dev_init) {
err = dev->adapter->dev_init(dev);
if (err)
goto lbl_set_intf_data;
}
if (dev->adapter->intf_get_info)
dev->adapter->intf_get_info(dev,
&dev->dev_info);
netdev_info(netdev, "attached to %s channel %u (device %s)\n",
dev->dev_info.device_name, ctrl_idx,
dev->dev_info.device_id);
return 0;
lbl_set_intf_data: usb_set_intfdata(intf, dev->prev_siblings);
free_candev(netdev);
return err;
}
/*
* called by the usb core when the device is unplugged from the system
*/
static void ixxat_usb_disconnect(struct usb_interface *intf)
{
struct ixx_usb_device *dev;
struct ixx_usb_device *dev_prev_siblings;
/* unregister as many netdev devices as siblings */
for (dev = usb_get_intfdata(intf); dev; dev = dev_prev_siblings) {
struct net_device *netdev = dev->netdev;
char name[IFNAMSIZ];
dev_prev_siblings = dev->prev_siblings;
dev->state &= ~IXXAT_USB_STATE_CONNECTED;
strncpy(name, netdev->name, IFNAMSIZ);
unregister_netdev(netdev);
dev->next_siblings = NULL;
if (dev->adapter->dev_free)
dev->adapter->dev_free(dev);
free_candev(netdev);
dev_dbg(&intf->dev, "%s removed\n", name);
}
usb_set_intfdata(intf, NULL);
}
/*
* probe function for new ixxat-usb devices
*/
static int ixxat_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *usb_dev = interface_to_usbdev(intf);
struct ixx_usb_adapter *ixx_usb_adapter, **pp;
int i, err = -ENOMEM;
struct ixx_dev_caps dev_caps;
usb_dev = interface_to_usbdev(intf);
usb_reset_configuration(usb_dev);
/* get corresponding IXX-USB adapter */
for (pp = ixx_usb_adapters_list; *pp; pp++)
if ((*pp)->device_id == le16_to_cpu(usb_dev->descriptor.idProduct))
break;
ixx_usb_adapter = *pp;
if (!ixx_usb_adapter) {
/* should never come except device_id bad usage in this file */
pr_err("%s: didn't find device id. 0x%x in devices list\n",
IXXAT_USB_DRIVER_NAME, le16_to_cpu(usb_dev->descriptor.idProduct));
return -ENODEV;
}
/* got corresponding adapter: check if it handles current interface */
if (ixx_usb_adapter->intf_probe) {
err = ixx_usb_adapter->intf_probe(intf);
if (err)
return err;
}
if (ixx_usb_adapter->dev_power) {
err = ixx_usb_adapter->dev_power(usb_dev, IXXAT_USB_POWER_WAKEUP);
if (err)
return err;
/* Give usb device some time to start its can controllers */
msleep(500);
}
/* got corresponding adapter: check the available controllers */
if (ixx_usb_adapter->dev_get_dev_caps) {
err = ixx_usb_adapter->dev_get_dev_caps(usb_dev, &dev_caps);
if (err)
return err;
for (i = 0; i < dev_caps.bus_ctrl_count; i++) {
if ( IXXAT_USB_BUS_CAN
== IXXAT_USB_BUS_TYPE(dev_caps.bus_ctrl_types[i]))
ixx_usb_adapter->ctrl_count++;
}
for (i = 0; i < dev_caps.bus_ctrl_count; i++) {
if ( IXXAT_USB_BUS_CAN == IXXAT_USB_BUS_TYPE(dev_caps.bus_ctrl_types[i]))
err = ixxat_usb_create_dev(ixx_usb_adapter, intf, i);
if (err) {
/* deregister already created devices */
ixxat_usb_disconnect(intf);
break;
}
}
}
return err;
}
/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver ixx_usb_driver = {
.name = IXXAT_USB_DRIVER_NAME,
.disconnect = ixxat_usb_disconnect,
.probe = ixxat_usb_probe,
.id_table = ixxat_usb_table,
};
static int __init ixx_usb_init(void)
{
int err;
/* register this driver with the USB subsystem */
err = usb_register(&ixx_usb_driver);
if (err)
pr_err("%s: usb_register failed (err %d)\n",
IXXAT_USB_DRIVER_NAME, err);
return err;
}
static int ixxat_usb_do_device_exit(struct device *d, void *arg)
{
struct usb_interface
*intf = (struct usb_interface*)to_usb_interface(d);
struct ixx_usb_device *dev;
/* stop as many netdev devices as siblings */
for (dev = usb_get_intfdata(intf); dev; dev = dev->prev_siblings) {
struct net_device *netdev = dev->netdev;
if (netif_device_present(netdev))
if (dev->adapter->dev_exit)
dev->adapter->dev_exit(dev);
}
return 0;
}
static void __exit ixx_usb_exit(void)
{
int err;
/* last chance do send any synchronous commands here */
err = driver_for_each_device(&ixx_usb_driver.drvwrap.driver, NULL,
NULL, ixxat_usb_do_device_exit);
if (err)
pr_err("%s: failed to stop all can devices (err %d)\n",
IXXAT_USB_DRIVER_NAME, err);
/* deregister this driver with the USB subsystem */
usb_deregister(&ixx_usb_driver);
pr_info("%s: IXX-USB interfaces driver unloaded\n",
IXXAT_USB_DRIVER_NAME);
}
module_init(ixx_usb_init);
module_exit(ixx_usb_exit);
ubuntu/ixxat/ixx_usb_core.h 0 → 100644
View file @ cddf5820
/*
* CAN driver for IXXAT USB-to-CAN V2 adapters
*
* Copyright (C) 2003-2014 Michael Hengler IXXAT Automation GmbH
*
* Based on code originally by pcan_usb_core
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published
* by the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#ifndef IXX_USB_CORE_H
#define IXX_USB_CORE_H
#include <linux/version.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 3)
#define CANFD_CAPABLE 1
#endif
extern struct ixx_usb_adapter usb_to_can_v2_compact;
extern struct ixx_usb_adapter usb_to_can_v2_automotive;
extern struct ixx_usb_adapter usb_to_can_v2_embedded;
extern struct ixx_usb_adapter usb_to_can_v2_professional;
extern struct ixx_usb_adapter usb_to_can_v2_low_speed;
extern struct ixx_usb_adapter usb_to_can_v2_extended;
#ifdef CANFD_CAPABLE
extern struct ixx_usb_adapter usb_to_can_fd_automotive;
extern struct ixx_usb_adapter usb_to_can_fd_compact;
extern struct ixx_usb_adapter usb_to_can_fd_professional;
extern struct ixx_usb_adapter usb_to_can_fd_pcie_mini;
extern struct ixx_usb_adapter usb_to_car;
extern struct ixx_usb_adapter dell_edge_gw3002;
#endif
#ifndef CAN_MAX_DLEN
#define CAN_MAX_DLEN 8
#endif
#ifndef CANFD_MAX_DLEN
#define CANFD_MAX_DLEN 64
#endif
/* supported device ids. */
#define USB_TO_CAN_V2_COMPACT_PRODUCT_ID 0x0008
#define USB_TO_CAN_V2_EMBEDDED_PRODUCT_ID 0x0009
#define USB_TO_CAN_V2_PROFESSIONAL_PRODUCT_ID 0x000A
#define USB_TO_CAN_V2_AUTOMOTIVE_PRODUCT_ID 0x000B
#define USB_TO_LIN_V2_PRODUCT_ID 0x000C
#define USB_TO_KLINE_V2_PRODUCT_ID 0x000D
#define USB_TO_CAN_V2_LOW_SPEED_PRODUCT_ID 0xFFFF
#define USB_TO_CAN_V2_EXTENDED_PRODUCT_ID 0x000E
#define USB_TO_CAN_FD_COMPACT_PRODUCT_ID 0x0014
#define USB_TO_CAN_FD_PROFESSIONAL_PRODUCT_ID 0x0016
#define USB_TO_CAN_FD_AUTOMOTIVE_PRODUCT_ID 0x0017
#define USB_TO_CAN_FD_PCIE_MINI_PRODUCT_ID 0x001B
#define USB_TO_CAR_ID 0x001C
#define DELL_EDGE_GW3002_PRODUCT_ID 0xFF11
#define IXXAT_USB_MAX_CHANNEL 5
/* number of urbs that are submitted for rx/tx per channel */
#define IXXAT_USB_MAX_RX_URBS 4
#define IXXAT_USB_MAX_TX_URBS 10
#define IXX_BTMODE_NAT 0x01
#define IXXAT_USB_POWER_WAKEUP 0
#define IXXAT_USB_POWER_SLEEP 1
struct ixx_usb_device;
struct ixx_dev_caps
{
u16 bus_ctrl_count;
u16 bus_ctrl_types[32];
} __packed;
struct ixx_ctrl_caps
{
u16 ctrl_type;
u16 bus_coupling;
u32 features;
u32 clock_freq;
u32 tsc_divisor;
u32 cms_divisor;
u32 cms_max_ticks;
u32 dtx_divisor;
u32 dtx_max_ticks;
} __packed;
struct canbtp
{
u32 mode; // timing mode (see CAN_BTMODE_ const)
u32 bps; // bits per second or prescaler (see CAN_BTMODE_)
u16 ts1; // length of time segment 1 in quantas
u16 ts2; // length of time segment 2 in quantas
u16 sjw; // re-synchronisation jump width in quantas
u16 tdo; // transceiver delay compensation offset in quantas
// (0 = disabled)
} __packed;
struct ixx_ctrl_caps_v2
{
u16 ctrl_type;
u16 bus_coupling;
u32 features;
u32 clock_freq;
struct canbtp sdr_range_min;
struct canbtp sdr_range_max;
struct canbtp fdr_range_min;
struct canbtp fdr_range_max;
u32 tsc_freq;
u32 tsc_divisor;
u32 cms_freq;
u32 cms_divisor;
u32 cms_max_ticks;
u32 dtx_freq;
u32 dtx_divisor;
u32 dtx_max_ticks;
} __packed;
struct ixx_intf_info
{
char device_name[16]; // device name
char device_id[16]; // device identification ( unique device id)
u16 device_version; // device version ( 0, 1, ...)
u32 device_fpga_version; // device version of FPGA design
} __packed;
struct ixx_intf_fw_info
{
u32 firmware_type; // type of currently running firmware
u16 reserved; // reserved
u16 major_version; // major firmware version number
u16 minor_version; // minor firmware version number
u16 build_version; // build firmware version number
} __packed;
struct ixx_usb_adapter {
char *name;
u32 device_id;
struct can_clock clock;
const struct can_bittiming_const bittiming_const;
const struct can_bittiming_const data_bittiming_const;
unsigned int ctrl_count;
u32 ctrlmode_supported;
int (*intf_probe)(struct usb_interface *intf);
int (*dev_get_dev_caps)(struct usb_device *usb_dev, struct ixx_dev_caps* dev_caps);
int (*dev_get_ctrl_caps)(struct usb_device *usb_dev, struct ixx_ctrl_caps* ctrl_caps, int index);
int (*intf_get_info)(struct ixx_usb_device *dev, struct ixx_intf_info* intf_info);
int (*intf_get_fw_info)(struct ixx_usb_device *dev, struct ixx_intf_fw_info* fw_info);
int (*dev_init)(struct ixx_usb_device *dev);
void (*dev_exit)(struct ixx_usb_device *dev);
void (*dev_free)(struct ixx_usb_device *dev);
int (*dev_open)(struct ixx_usb_device *dev);
int (*dev_close)(struct ixx_usb_device *dev);
int (*dev_set_bittiming)(struct ixx_usb_device *dev, struct can_bittiming *bt);
int (*dev_set_bus)(struct ixx_usb_device *dev, u8 onoff);
int (*dev_decode_buf)(struct ixx_usb_device *dev, struct urb *urb);
int (*dev_encode_msg)(struct ixx_usb_device *dev, struct sk_buff *skb,
u8 *obuf, size_t *size);
int (*dev_start)(struct ixx_usb_device *dev);
int (*dev_stop)(struct ixx_usb_device *dev);
int (*dev_restart_async)(struct ixx_usb_device *dev, struct urb *urb,
u8 *buf);
int (*dev_power)(struct usb_device *usb_dev, u8 mode);
u8 ep_msg_in[IXXAT_USB_MAX_CHANNEL];
u8 ep_msg_out[IXXAT_USB_MAX_CHANNEL];
int rx_buffer_size;
int tx_buffer_size;
int sizeof_dev_private;
int has_bgi_ep;
};
struct ixx_time_ref {
struct timeval tv_host_0;
u32 ts_dev_0;
u32 ts_dev_last;
};
struct ixx_tx_urb_context {
struct ixx_usb_device *dev;
u32 echo_index;
u8 dlc;
u8 count;
struct urb *urb;
};
/*IXXAT USB device */
struct ixx_usb_device {
struct can_priv can;
struct ixx_usb_adapter *adapter;
unsigned int ctrl_idx;
u32 state;
struct sk_buff *echo_skb[IXXAT_USB_MAX_TX_URBS];
struct usb_device *udev;
struct net_device *netdev;
atomic_t active_tx_urbs;
struct usb_anchor tx_submitted;
struct ixx_tx_urb_context tx_contexts[IXXAT_USB_MAX_TX_URBS];
struct usb_anchor rx_submitted;
u32 device_number;
u8 device_rev;
u8 ep_msg_in;
u8 ep_msg_out;
u8 transmit_buffer[256];
u8 transmit_ptr;
u8 transmit_count;
u8 transmit_dlc;
struct task_struct *restart_task;
u8 restart_flag;
u8 must_quit;
wait_queue_head_t wait_queue;
struct ixx_usb_device *prev_siblings;
struct ixx_usb_device *next_siblings;
u8 btr0;
u8 btr1;
int ctrl_opened_count;
struct ixx_time_ref time_ref;
struct ixx_intf_info dev_info;
struct ixx_intf_fw_info fw_info;
struct can_berr_counter bec;
};
struct ixx_can_msg
{
u8 size;
u32 time;
u32 msg_id;
u32 flags;
u8 data[CAN_MAX_DLEN];
} __packed;
struct ixx_can_msg_v2
{
u8 size;
u32 time;
u32 msg_id;
u32 flags;
u32 client_id;
u8 data[CANFD_MAX_DLEN];
} __packed;
void ixxat_dump_mem(char *prompt, void *p, int l);
void ixxat_usb_update_ts_now(struct ixx_usb_device *dev, u32 ts_now);
void ixxat_usb_set_ts_now(struct ixx_usb_device *dev, u32 ts_now);
void ixxat_usb_get_ts_tv(struct ixx_usb_device *dev, u32 ts,
ktime_t* k_time);
void ixxat_usb_async_complete(struct urb *urb);
void ixxat_usb_restart_complete(struct ixx_usb_device *dev);
#endif
ubuntu/ixxat/ixx_usb_fd.c 0 → 100644
View file @ cddf5820
/*
* CAN driver for IXXAT USB-to-CAN FD
*
* Copyright (C) 2017 Michael Hengler <mhengler@ixxat.de>
*
* Based on code originally by pcan_usb_core
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published
* by the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#include <linux/netdevice.h>
#include <linux/usb.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/can.h>
#include <linux/can/dev.h>
#include <linux/can/error.h>
#include <linux/kthread.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/types.h>
#include <linux/gfp.h>
#include <asm-generic/errno.h>
#include <stdarg.h>
#include "ixx_usb_core.h"
#ifdef CANFD_CAPABLE
MODULE_SUPPORTED_DEVICE("IXXAT Automation GmbH USB-to-CAN FD");
/* use ifi can fd clock due to internal bittiming calculations */
#define IFIFD_CRYSTAL_HZ 80000000
/* usb-to-can fd Endpoints */
#define IXXAT_USBFD_EP_CMDOUT 0
#define IXXAT_USBFD_EP_CMDIN (IXXAT_USBFD_EP_CMDOUT | USB_DIR_IN)
#define IXXAT_USBFD_EP_MSGOUT_0 1
#define IXXAT_USBFD_EP_MSGIN_0 (IXXAT_USBFD_EP_MSGOUT_0 | USB_DIR_IN)
#define IXXAT_USBFD_EP_MSGOUT_1 2
#define IXXAT_USBFD_EP_MSGIN_1 (IXXAT_USBFD_EP_MSGOUT_1 | USB_DIR_IN)
#define IXXAT_USBFD_EP_MSGOUT_2 3
#define IXXAT_USBFD_EP_MSGIN_2 (IXXAT_USBFD_EP_MSGOUT_2 | USB_DIR_IN)
#define IXXAT_USBFD_EP_MSGOUT_3 4
#define IXXAT_USBFD_EP_MSGIN_3 (IXXAT_USBFD_EP_MSGOUT_3 | USB_DIR_IN)
#define IXXAT_USBFD_EP_MSGOUT_4 5
#define IXXAT_USBFD_EP_MSGIN_4 (IXXAT_USBFD_EP_MSGOUT_4 | USB_DIR_IN)
/* DELL Edge GW3002 Endpoints */
#define DELL_EDGE_GW3002_EP_MSGOUT_0 1
#define DELL_EDGE_GW3002_EP_MSGIN_0 (2 | USB_DIR_IN)
#define DELL_EDGE_GW3002_EP_MSGOUT_1 3
#define DELL_EDGE_GW3002_EP_MSGIN_1 (4 | USB_DIR_IN)
#define DELL_EDGE_GW3002_EP_MSGOUT_2 5
#define DELL_EDGE_GW3002_EP_MSGIN_2 (6 | USB_DIR_IN)
#define DELL_EDGE_GW3002_EP_MSGOUT_3 7
#define DELL_EDGE_GW3002_EP_MSGIN_3 (8 | USB_DIR_IN)
#define DELL_EDGE_GW3002_EP_MSGOUT_4 9
#define DELL_EDGE_GW3002_EP_MSGIN_4 (10 | USB_DIR_IN)
/* usb-to-can fd rx/tx buffers size */
#define IXXAT_USBFD_RX_BUFFER_SIZE 512
#define IXXAT_USBFD_TX_BUFFER_SIZE 512
#define IXXAT_USBFD_CMD_BUFFER_SIZE 256
/* reception of 11-bit id messages */
#define IXXAT_USBFD_OPMODE_STANDARD 0x01
/* reception of 29-bit id messages */
#define IXXAT_USBFD_OPMODE_EXTENDED 0x02
/* enable reception of error frames */
#define IXXAT_USBFD_OPMODE_ERRFRAME 0x04
/* listen only mode (TX passive) */
#define IXXAT_USBFD_OPMODE_LISTONLY 0x08
/* no extended operation */
#define IXXAT_USBFD_EXMODE_DISABLED 0x00
/* extended data length */
#define IXXAT_USBFD_EXMODE_EXTDATA 0x01
/* fast data bit rate */
#define IXXAT_USBFD_EXMODE_FASTDATA 0x02
/* ISO conform CAN-FD frame */
#define IXXAT_USBFD_EXMODE_ISOFD 0x04
/* Stuff error */
#define IXXAT_USBFD_CAN_ERROR_STUFF 1
/* Form error */
#define IXXAT_USBFD_CAN_ERROR_FORM 2
/* Acknowledgment error */
#define IXXAT_USBFD_CAN_ERROR_ACK 3
/* Bit error */
#define IXXAT_USBFD_CAN_ERROR_BIT 4
/* Fast data bit rate error */
#define IXXAT_USBFD_CAN_ERROR_FAST_DATA 5
/* CRC error */
#define IXXAT_USBFD_CAN_ERROR_CRC 6
/* Other (unspecified) error */
#define IXXAT_USBFD_CAN_ERROR_OTHER 7
/* Data overrun occurred */
#define IXXAT_USBFD_CAN_STATUS_OVRRUN 0x02
/* Error warning limit exceeded */
#define IXXAT_USBFD_CAN_STATUS_ERRLIM 0x04
/* Bus off status */
#define IXXAT_USBFD_CAN_STATUS_BUSOFF 0x08
#define IXXAT_USBFD_CAN_DATA 0x00
#define IXXAT_USBFD_CAN_INFO 0x01
#define IXXAT_USBFD_CAN_ERROR 0x02
#define IXXAT_USBFD_CAN_STATUS 0x03
#define IXXAT_USBFD_CAN_WAKEUP 0x04
#define IXXAT_USBFD_CAN_TIMEOVR 0x05
#define IXXAT_USBFD_CAN_TIMERST 0x06
#define IXXAT_USBFD_MSG_FLAGS_TYPE 0x000000FF
#define IXXAT_USBFD_MSG_FLAGS_SSM 0x00000100
#define IXXAT_USBFD_MSG_FLAGS_HPM 0x00000200
#define IXXAT_USBFD_MSG_FLAGS_EDL 0x00000400
#define IXXAT_USBFD_MSG_FLAGS_FDR 0x00000800
#define IXXAT_USBFD_MSG_FLAGS_ESI 0x00001000
#define IXXAT_USBFD_MSG_FLAGS_RES 0x0000E000
#define IXXAT_USBFD_MSG_FLAGS_DLC 0x000F0000
#define IXXAT_USBFD_MSG_FLAGS_OVR 0x00100000
#define IXXAT_USBFD_MSG_FLAGS_SRR 0x00200000
#define IXXAT_USBFD_MSG_FLAGS_RTR 0x00400000
#define IXXAT_USBFD_MSG_FLAGS_EXT 0x00800000
#define IXXAT_USBFD_MSG_FLAGS_AFC 0xFF000000
#define IXXAT_USBFD_BAL_CMD_CLASS 3
#define IXXAT_USBFD_BRD_CMD_CLASS 4
#define IXXAT_USBFD_BRD_CMD_CAT 0
#define IXXAT_USBFD_CAN_CMD_CAT 1
#define IXXAT_USBFD_VCI_CMD_CODE(Class, Function) \
((u32) (((Class) << 8) | (Function)))
#define IXXAT_USBFD_BRD_CMD_CODE(Category, Function) \
IXXAT_USBFD_VCI_CMD_CODE(IXXAT_USBFD_BRD_CMD_CLASS, \
((Category) << 5) | (Function))
#define IXXAT_USBFD_BAL_CMD_CODE(Category, Function) \
IXXAT_USBFD_VCI_CMD_CODE(IXXAT_USBFD_BAL_CMD_CLASS, \
((Category) << 5) | (Function))
#define IXXAT_USBFD_CAN_GET_CAPS_CMD \
IXXAT_USBFD_BAL_CMD_CODE(IXXAT_USBFD_CAN_CMD_CAT, 0)
#define IXXAT_USBFD_POWER_CMD \
IXXAT_USBFD_BRD_CMD_CODE(IXXAT_USBFD_CAN_CMD_CAT, 1)
#define IXXAT_USBFD_CAN_INIT_CMD \
IXXAT_USBFD_BAL_CMD_CODE(IXXAT_USBFD_CAN_CMD_CAT, 5)
#define IXXAT_USBFD_CAN_START_CMD \
IXXAT_USBFD_BAL_CMD_CODE(IXXAT_USBFD_CAN_CMD_CAT, 6)
#define IXXAT_USBFD_CAN_STOP_CMD \
IXXAT_USBFD_BAL_CMD_CODE(IXXAT_USBFD_CAN_CMD_CAT, 7)
#define IXXAT_USBFD_CAN_RESET_CMD \
IXXAT_USBFD_BAL_CMD_CODE(IXXAT_USBFD_CAN_CMD_CAT, 8)
/* Additional commands for USB-to-CAN FD */
#define IXXAT_USBFD_INIT_V2_CMD \
IXXAT_USBFD_BAL_CMD_CODE(IXXAT_USBFD_CAN_CMD_CAT, 23)
#define IXXAT_USBFD_BRD_GET_FWINFO_CMD \
IXXAT_USBFD_BRD_CMD_CODE(IXXAT_USBFD_BRD_CMD_CAT, 0)
#define IXXAT_USBFD_BRD_GET_DEVCAPS_CMD \
IXXAT_USBFD_BRD_CMD_CODE(IXXAT_USBFD_BRD_CMD_CAT, 1)
#define IXXAT_USBFD_BRD_GET_DEVINFO_CMD \
IXXAT_USBFD_BRD_CMD_CODE(IXXAT_USBFD_BRD_CMD_CAT, 2)
struct ixx_usbfd_dal_req {
u32 req_size;
u16 req_port;
u16 req_socket;
u32 req_code;
} __packed;
struct ixx_usbfd_dal_res {
u32 res_size;
u32 ret_size;
u32 ret_code;
} __packed;
// Additional structures for the for USB-to-CAN FD
struct ixx_usbfd_dev_power_req {
struct ixx_usbfd_dal_req dal_req;
u8 mode;
u8 _padding1;
u16 _padding2;
} __packed;
struct ixx_usbfd_dev_power_res {
struct ixx_usbfd_dal_res dal_res;
} __packed;
struct ixx_usbfd_ctrl_init_v2_req {
struct ixx_usbfd_dal_req dal_req;
u8 opmode;
u8 exmode;
struct canbtp sdr;
struct canbtp fdr;
u16 _padding;
} __packed;
struct ixx_usbfd_ctrl_init_v2_res {
struct ixx_usbfd_dal_res dal_res;
} __packed;
struct ixx_usbfd_dev_caps_req {
struct ixx_usbfd_dal_req dal_req;
} __packed;
struct ixx_usbfd_dev_caps_res {
struct ixx_usbfd_dal_res dal_res;
struct ixx_dev_caps dev_caps;
} __packed;
struct ixx_usbfd_ctrl_caps_req {
struct ixx_usbfd_dal_req dal_req;
} __packed;
struct ixx_usbfd_ctrl_caps_res {
struct ixx_usbfd_dal_res dal_res;
struct ixx_ctrl_caps ctrl_caps;
} __packed;
struct ixx_usbfd_ctrl_init_req {
struct ixx_usbfd_dal_req dal_req;
u8 mode;
u8 btr0;
u8 btr1;
u8 padding;
} __packed;
struct ixx_usbfd_ctrl_init_res {
struct ixx_usbfd_dal_res dal_res;
} __packed;
struct ixx_usbfd_ctrl_start_req {
struct ixx_usbfd_dal_req dal_req;
} __packed;
struct ixx_usbfd_ctrl_start_res {
struct ixx_usbfd_dal_res dal_res;
u32 start_time;
} __packed;
struct ixx_usbfd_ctrl_stop_req {
struct ixx_usbfd_dal_req dal_req;
u32 action;
} __packed;
struct ixx_usbfd_ctrl_stop_res {
struct ixx_usbfd_dal_res dal_res;
} __packed;
struct ixx_usbfd_brd_get_fwinfo_req {
struct ixx_usbfd_dal_req dal_req;
} __packed;
struct ixx_usbfd_brd_get_fwinfo_res {
struct ixx_usbfd_dal_res dal_res;
struct ixx_intf_fw_info fwinfo;
} __packed;
struct ixx_usbfd_brd_get_intf_info_req {
struct ixx_usbfd_dal_req dal_req;
} __packed;
struct ixx_usbfd_brd_get_intf_info_res {
struct ixx_usbfd_dal_res dal_res;
struct ixx_intf_info info;
} __packed;
/*
* send usb-to-can fd command synchronously
*/
static int ixx_usbfd_send_cmd(struct usb_device *dev,
struct ixx_usbfd_dal_req *dal_req)
{
int err, i;
u16 size, value;
u8 request, requesttype;
u8 *buf;
request = 0xff;
requesttype = USB_TYPE_VENDOR | USB_DIR_OUT;
value = le16_to_cpu(dal_req->req_port);
size = le32_to_cpu(dal_req->req_size) +
sizeof(const struct ixx_usbfd_dal_res);
buf = kmalloc(size, GFP_KERNEL);
if(!buf)
return -ENOMEM;
memcpy(buf, (u8 *)dal_req, size);
for (i = 0; i < 10; ++i) {
err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
requesttype,
value,
0,
buf,
size,
msecs_to_jiffies(50));
if (err < 0)
msleep(20);
else
break;
}
kfree(buf);
if (err < 0) {
dev_err(&dev->dev, "sending command failure: %d\n", err);
return err;
}
return 0;
}
/*
* receive usb-to-can fd command synchronously
*/
static int ixx_usbfd_rcv_cmd(struct usb_device *dev,
struct ixx_usbfd_dal_res *dal_res, int value)
{
int err, res_size, i, size_to_read;
u8 request, requesttype;
u8 *buf;
request = 0xff;
requesttype = USB_TYPE_VENDOR | USB_DIR_IN;
res_size = 0;
size_to_read = le32_to_cpu(dal_res->res_size);
buf = kmalloc(size_to_read, GFP_KERNEL);
if(!buf)
return -ENOMEM;
for (i = 0; i < 10; ++i) {
err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
requesttype, value,
0, buf + (u8) res_size,
size_to_read - res_size, msecs_to_jiffies(50));
if (err < 0) {
msleep(20);
continue;
}
res_size += err;
if (res_size < size_to_read)
msleep(20);
else
break;
}
if (res_size != size_to_read)
err = -EBADMSG;
if (err < 0) {
dev_err(&dev->dev, "receiving command failure: %d\n", err);
kfree(buf);
return err;
}
memcpy((u8 *)dal_res, buf, size_to_read);
kfree(buf);
return err;
}
static int ixx_usbfd_init_ctrl(struct ixx_usb_device *dev, u8 mode,
u8 exmode,
struct can_bittiming *arbitration_phase,
struct can_bittiming *data_phase)
{
int err = -ENODEV;
u8 data[IXXAT_USBFD_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbfd_ctrl_init_v2_req *ctrl_init_req;
struct ixx_usbfd_ctrl_init_v2_res *ctrl_init_res;
u32 req_size = sizeof(*ctrl_init_req);
ctrl_init_req = (struct ixx_usbfd_ctrl_init_v2_req *) data;
ctrl_init_res = (struct ixx_usbfd_ctrl_init_v2_res *)(data + req_size);
ctrl_init_req->dal_req.req_size = cpu_to_le32(req_size);
ctrl_init_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBFD_INIT_V2_CMD);
ctrl_init_req->dal_req.req_port = cpu_to_le16(dev->ctrl_idx);
ctrl_init_req->dal_req.req_socket = 0xffff;
ctrl_init_req->opmode = mode;
ctrl_init_req->exmode = exmode;
ctrl_init_req->sdr.mode = cpu_to_le32(IXX_BTMODE_NAT);
ctrl_init_req->sdr.bps = cpu_to_le32(arbitration_phase->brp);
ctrl_init_req->sdr.ts1 =
cpu_to_le16(arbitration_phase->prop_seg +
arbitration_phase->phase_seg1);
ctrl_init_req->sdr.ts2 = cpu_to_le16(arbitration_phase->phase_seg2);
ctrl_init_req->sdr.sjw = cpu_to_le16(arbitration_phase->sjw);
ctrl_init_req->sdr.tdo = 0;
if (exmode) {
ctrl_init_req->fdr.mode = cpu_to_le32(IXX_BTMODE_NAT);
ctrl_init_req->fdr.bps = cpu_to_le32(data_phase->brp);
ctrl_init_req->fdr.ts1 =
cpu_to_le16(data_phase->prop_seg +
data_phase->phase_seg1);
ctrl_init_req->fdr.ts2 = cpu_to_le16(data_phase->phase_seg2);
ctrl_init_req->fdr.sjw = cpu_to_le16(data_phase->sjw);
ctrl_init_req->fdr.tdo =
cpu_to_le16((1 + data_phase->phase_seg1 +
data_phase->prop_seg) *
data_phase->brp);
}
ctrl_init_res->dal_res.res_size =
cpu_to_le32(sizeof(*ctrl_init_res));
ctrl_init_res->dal_res.ret_size = 0;
ctrl_init_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbfd_send_cmd(dev->udev, &ctrl_init_req->dal_req);
if (err < 0)
return err;
err = ixx_usbfd_rcv_cmd(dev->udev,
&ctrl_init_res->dal_res,
dev->ctrl_idx);
if (err < 0)
return err;
return le32_to_cpu(ctrl_init_res->dal_res.ret_code);
}
static int ixx_usbfd_start_ctrl(struct ixx_usb_device *dev, u32 *time_ref)
{
int err = -ENODEV;
u8 data[IXXAT_USBFD_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbfd_ctrl_start_req *ctrl_start_req;
struct ixx_usbfd_ctrl_start_res *ctrl_start_res;
u32 req_size = sizeof(*ctrl_start_req);
ctrl_start_req = (struct ixx_usbfd_ctrl_start_req *) data;
ctrl_start_res = (struct ixx_usbfd_ctrl_start_res *)(data + req_size);
ctrl_start_req->dal_req.req_size = cpu_to_le32(req_size);
ctrl_start_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBFD_CAN_START_CMD);
ctrl_start_req->dal_req.req_port = cpu_to_le16(dev->ctrl_idx);
ctrl_start_req->dal_req.req_socket = 0xffff;
ctrl_start_res->dal_res.res_size =
cpu_to_le32(sizeof(*ctrl_start_res));
ctrl_start_res->dal_res.ret_size = 0;
ctrl_start_res->dal_res.ret_code = 0xffffffff;
ctrl_start_res->start_time = 0;
err = ixx_usbfd_send_cmd(dev->udev, &ctrl_start_req->dal_req);
if (err < 0)
return err;
err = ixx_usbfd_rcv_cmd(dev->udev,
&ctrl_start_res->dal_res,
dev->ctrl_idx);
if (err < 0)
return err;
if (time_ref)
*time_ref = le32_to_cpu(ctrl_start_res->start_time);
return le32_to_cpu(ctrl_start_res->dal_res.ret_code);
}
static int ixx_usbfd_stop_ctrl(struct ixx_usb_device *dev)
{
int err = -ENODEV;
u8 data[IXXAT_USBFD_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbfd_ctrl_stop_req *ctrl_stop_req;
struct ixx_usbfd_ctrl_stop_res *ctrl_stop_res;
u32 req_size = sizeof(*ctrl_stop_req);
ctrl_stop_req = (struct ixx_usbfd_ctrl_stop_req *) data;
ctrl_stop_res = (struct ixx_usbfd_ctrl_stop_res *)(data + req_size);
ctrl_stop_req->dal_req.req_size = cpu_to_le32(req_size);
ctrl_stop_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBFD_CAN_STOP_CMD);
ctrl_stop_req->dal_req.req_port = cpu_to_le16(dev->ctrl_idx);
ctrl_stop_req->dal_req.req_socket = 0xffff;
ctrl_stop_req->action = cpu_to_le32(0x3);
ctrl_stop_res->dal_res.res_size =
cpu_to_le32(sizeof(*ctrl_stop_res));
ctrl_stop_res->dal_res.ret_size = 0;
ctrl_stop_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbfd_send_cmd(dev->udev, &ctrl_stop_req->dal_req);
if (err < 0)
return err;
err = ixx_usbfd_rcv_cmd(dev->udev,
&ctrl_stop_res->dal_res,
dev->ctrl_idx);
if (err < 0)
return err;
if (!le32_to_cpu(ctrl_stop_res->dal_res.ret_code))
dev->can.state = CAN_STATE_STOPPED;
return le32_to_cpu(ctrl_stop_res->dal_res.ret_code);
}
static int ixx_usbfd_reset_ctrl(struct ixx_usb_device *dev)
{
int err = -ENODEV;
u8 data[IXXAT_USBFD_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbfd_dal_req *dal_req;
struct ixx_usbfd_dal_res *dal_res;
u32 req_size = sizeof(*dal_req);
dal_req = (struct ixx_usbfd_dal_req *) data;
dal_res = (struct ixx_usbfd_dal_res *)(data + req_size);
dal_req->req_size = cpu_to_le32(req_size);
dal_req->req_code = cpu_to_le32(IXXAT_USBFD_CAN_RESET_CMD);
dal_req->req_port = cpu_to_le16(dev->ctrl_idx);
dal_req->req_socket = 0xffff;
dal_res->res_size = cpu_to_le32(sizeof(*dal_res));
dal_res->ret_size = 0;
dal_res->ret_code = 0xffffffff;
err = ixx_usbfd_send_cmd(dev->udev, dal_req);
if (err < 0)
return err;
err = ixx_usbfd_rcv_cmd(dev->udev, dal_res,
dev->ctrl_idx);
if (err < 0)
return err;
return le32_to_cpu(dal_res->ret_code);
}
static int ixx_usbfd_power_ctrl(struct usb_device *dev, u8 mode)
{
int err = -ENODEV;
u8 data[IXXAT_USBFD_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbfd_dev_power_req *ctrl_power_req;
struct ixx_usbfd_dev_power_res *ctrl_power_res;
u32 req_size = sizeof(*ctrl_power_req);
ctrl_power_req = (struct ixx_usbfd_dev_power_req *) data;
ctrl_power_res = (struct ixx_usbfd_dev_power_res *)(data + req_size);
ctrl_power_req->dal_req.req_size = cpu_to_le32(req_size);
ctrl_power_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBFD_POWER_CMD);
ctrl_power_req->dal_req.req_port = cpu_to_le16(0xffff);
ctrl_power_req->dal_req.req_socket = 0xffff;
ctrl_power_req->mode = mode;
ctrl_power_res->dal_res.res_size =
cpu_to_le32(sizeof(*ctrl_power_res));
ctrl_power_res->dal_res.ret_size = 0;
ctrl_power_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbfd_send_cmd(dev, &ctrl_power_req->dal_req);
if (err < 0)
return err;
err = ixx_usbfd_rcv_cmd(dev,
&ctrl_power_res->dal_res,
0xffff);
if (err < 0)
return err;
return le32_to_cpu(ctrl_power_res->dal_res.ret_code);
}
/*
* handle restart but in asynchronously way
*/
static int ixx_usbfd_restart_task(void *user_data)
{
u32 time_ref;
struct ixx_usb_device *dev = user_data;
while (!kthread_should_stop()) {
if (!dev->must_quit) {
wait_event_interruptible(dev->wait_queue,
dev->restart_flag);
if (!dev->must_quit) {
ixx_usbfd_stop_ctrl(dev);
ixx_usbfd_start_ctrl(dev, &time_ref);
dev->restart_flag = 0;
dev->can.state = CAN_STATE_ERROR_ACTIVE;
}
} else
msleep(20);
}
return 0;
}
static int ixx_usbfd_handle_canmsg(struct ixx_usb_device *dev,
struct ixx_can_msg_v2 *rx)
{
struct net_device *netdev = dev->netdev;
struct canfd_frame *can_frame;
struct sk_buff *skb;
const u32 flags = le32_to_cpu(rx->flags);
if (flags & IXXAT_USBFD_MSG_FLAGS_EDL)
skb = alloc_canfd_skb(netdev, &can_frame);
else
skb = alloc_can_skb(netdev, (struct can_frame **)&can_frame);
if (!skb)
return -ENOMEM;
if (flags & IXXAT_USBFD_MSG_FLAGS_EDL) {
if (flags & IXXAT_USBFD_MSG_FLAGS_FDR)
can_frame->flags |= CANFD_BRS;
if (flags & IXXAT_USBFD_MSG_FLAGS_ESI)
can_frame->flags |= CANFD_ESI;
can_frame->len =
can_dlc2len(
get_canfd_dlc((flags & IXXAT_USBFD_MSG_FLAGS_DLC)
>> 16));
} else {
can_frame->len =
get_canfd_dlc((flags & IXXAT_USBFD_MSG_FLAGS_DLC)
>> 16);
}
if (flags & IXXAT_USBFD_MSG_FLAGS_OVR) {
netdev->stats.rx_over_errors++;
netdev->stats.rx_errors++;
}
can_frame->can_id = le32_to_cpu(rx->msg_id);
if (flags & IXXAT_USBFD_MSG_FLAGS_EXT)
can_frame->can_id |= CAN_EFF_FLAG;
if (flags & IXXAT_USBFD_MSG_FLAGS_RTR)
can_frame->can_id |= CAN_RTR_FLAG;
else
memcpy(can_frame->data, rx->data, can_frame->len);
ixxat_usb_get_ts_tv(dev, le32_to_cpu(rx->time), &skb->tstamp);
netif_rx(skb);
netdev->stats.rx_packets++;
netdev->stats.rx_bytes += can_frame->len;
return 0;
}
static int ixx_usbfd_handle_error(struct ixx_usb_device *dev,
struct ixx_can_msg_v2 *rx)
{
struct net_device *netdev = dev->netdev;
struct can_frame *can_frame;
struct sk_buff *skb;
u8 raw_status = 0;
/* nothing should be sent while in BUS_OFF state */
if (dev->can.state == CAN_STATE_BUS_OFF)
return 0;
raw_status = rx->data[0];
/* allocate an skb to store the error frame */
skb = alloc_can_err_skb(netdev, &can_frame);
if (!skb)
return -ENOMEM;
switch (raw_status) {
case IXXAT_USBFD_CAN_ERROR_ACK:
can_frame->can_id |= CAN_ERR_ACK;
netdev->stats.tx_errors++;
break;
case IXXAT_USBFD_CAN_ERROR_BIT:
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[2] |= CAN_ERR_PROT_BIT;
netdev->stats.rx_errors++;
break;
case IXXAT_USBFD_CAN_ERROR_CRC:
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ;
netdev->stats.rx_errors++;
break;
case IXXAT_USBFD_CAN_ERROR_FORM:
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[2] |= CAN_ERR_PROT_FORM;
netdev->stats.rx_errors++;
break;
case IXXAT_USBFD_CAN_ERROR_STUFF:
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[2] |= CAN_ERR_PROT_STUFF;
netdev->stats.rx_errors++;
break;
case IXXAT_USBFD_CAN_ERROR_OTHER:
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[2] |= CAN_ERR_PROT_UNSPEC;
netdev->stats.rx_errors++;
break;
default:
can_frame->can_id |= CAN_ERR_PROT;
netdev->stats.rx_errors++;
}
netif_rx(skb);
netdev->stats.rx_packets++;
netdev->stats.rx_bytes += can_frame->can_dlc;
dev->bec.txerr = le16_to_cpu(rx->data[1]);
dev->bec.rxerr = le16_to_cpu(rx->data[3]);
return 0;
}
static int ixx_usbfd_handle_status(struct ixx_usb_device *dev,
struct ixx_can_msg_v2 *rx)
{
struct net_device *netdev = dev->netdev;
struct can_frame *can_frame;
struct sk_buff *skb;
u8 raw_status = 0;
u32 new_state = 0;
raw_status = rx->data[0];
/* nothing should be sent while in BUS_OFF state */
if (dev->can.state == CAN_STATE_BUS_OFF)
return 0;
if (!raw_status) {
/* no error bit (back to active state) */
dev->can.state = CAN_STATE_ERROR_ACTIVE;
dev->bec.txerr = 0;
dev->bec.rxerr = 0;
return 0;
}
/* allocate an skb to store the error frame */
skb = alloc_can_err_skb(netdev, &can_frame);
if (!skb)
return -ENOMEM;
if (raw_status & IXXAT_USBFD_CAN_STATUS_BUSOFF) {
can_frame->can_id |= CAN_ERR_BUSOFF;
new_state = CAN_STATE_BUS_OFF;
dev->can.can_stats.bus_off++;
can_bus_off(netdev);
} else {
if (raw_status & IXXAT_USBFD_CAN_STATUS_ERRLIM) {
can_frame->can_id |= CAN_ERR_CRTL;
can_frame->data[1] |= CAN_ERR_CRTL_TX_WARNING;
can_frame->data[1] |= CAN_ERR_CRTL_RX_WARNING;
dev->can.can_stats.error_warning++;
new_state = CAN_STATE_ERROR_WARNING;
}
if (raw_status & IXXAT_USBFD_CAN_STATUS_OVRRUN) {
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[2] |= CAN_ERR_PROT_OVERLOAD;
netdev->stats.rx_over_errors++;
netdev->stats.rx_errors++;
}
if (!new_state) {
new_state = CAN_STATE_ERROR_ACTIVE;
dev->bec.txerr = 0;
dev->bec.rxerr = 0;
}
}
dev->can.state = new_state;
netif_rx(skb);
netdev->stats.rx_packets++;
netdev->stats.rx_bytes += can_frame->can_dlc;
return 0;
}
/*
* callback for bulk IN urb
*/
static int ixx_usbfd_decode_buf(struct ixx_usb_device *dev, struct urb *urb)
{
struct net_device *netdev = dev->netdev;
struct ixx_can_msg_v2 *can_msg;
u32 msg_end;
int err = 0;
u32 read_size = 0;
u8 msg_type;
u8 *data = urb->transfer_buffer;
/* loop reading all the records from the incoming message */
msg_end = urb->actual_length;
for (; msg_end > 0;) {
can_msg = (struct ixx_can_msg_v2 *) &data[read_size];
if (!can_msg || !can_msg->size) {
netdev_err(netdev, "got unsupported rec in usb msg:\n");
err = -ENOTSUPP;
break;
}
/* check if the record goes out of current packet */
if ((read_size + can_msg->size + 1) > urb->actual_length) {
netdev_err(netdev,
"got frag rec: should inc usb rx buf size\n");
err = -EBADMSG;
break;
}
msg_type = (le32_to_cpu(can_msg->flags) &
IXXAT_USBFD_MSG_FLAGS_TYPE);
switch (msg_type) {
case IXXAT_USBFD_CAN_DATA:
err = ixx_usbfd_handle_canmsg(dev, can_msg);
if (err < 0)
goto fail;
break;
case IXXAT_USBFD_CAN_STATUS:
err = ixx_usbfd_handle_status(dev, can_msg);
if (err < 0)
goto fail;
break;
case IXXAT_USBFD_CAN_ERROR:
err = ixx_usbfd_handle_error(dev, can_msg);
if (err < 0)
goto fail;
break;
case IXXAT_USBFD_CAN_TIMEOVR:
ixxat_usb_get_ts_tv(dev, can_msg->time, NULL);
break;
case IXXAT_USBFD_CAN_INFO:
case IXXAT_USBFD_CAN_WAKEUP:
case IXXAT_USBFD_CAN_TIMERST:
break;
default:
netdev_err(netdev,
"unhandled rec type 0x%02x (%d): ignored\n",
msg_type, msg_type);
break;
}
read_size += can_msg->size + 1;
msg_end -= (can_msg->size + 1);
}
fail:
if (err)
ixxat_dump_mem("received msg", urb->transfer_buffer,
urb->actual_length);
return err;
}
static int ixx_usbfd_encode_msg(struct ixx_usb_device *dev, struct sk_buff *skb,
u8 *obuf, size_t *size)
{
struct canfd_frame *cf = (struct canfd_frame *) skb->data;
struct ixx_can_msg_v2 can_msg = { 0 };
if (cf->can_id & CAN_RTR_FLAG)
can_msg.flags |= IXXAT_USBFD_MSG_FLAGS_RTR;
if (cf->can_id & CAN_EFF_FLAG) {
can_msg.flags |= IXXAT_USBFD_MSG_FLAGS_EXT;
can_msg.msg_id = cf->can_id & CAN_EFF_MASK;
} else {
can_msg.msg_id = cf->can_id & CAN_SFF_MASK;
}
if (dev->can.ctrlmode & CAN_CTRLMODE_ONE_SHOT)
can_msg.flags |= IXXAT_USBFD_MSG_FLAGS_SSM;
if (skb->len == CANFD_MTU) {
can_msg.flags |= IXXAT_USBFD_MSG_FLAGS_EDL;
if (!(cf->can_id & CAN_RTR_FLAG) && (cf->flags & CANFD_BRS))
can_msg.flags |= IXXAT_USBFD_MSG_FLAGS_FDR;
}
can_msg.flags |= (can_len2dlc(cf->len) << 16) &
IXXAT_USBFD_MSG_FLAGS_DLC;
can_msg.flags = cpu_to_le32(can_msg.flags);
can_msg.msg_id = cpu_to_le32(can_msg.msg_id);
memcpy(can_msg.data, cf->data, cf->len);
can_msg.size = (u8)(sizeof(can_msg) - 1 - CANFD_MAX_DLEN + cf->len);
memcpy(obuf, &can_msg, can_msg.size + 1);
*size = can_msg.size + 1;
skb->data_len = *size;
return 0;
}
static int ixx_usbfd_start(struct ixx_usb_device *dev)
{
int err;
u32 time_ref = 0;
u8 can_opmode = IXXAT_USBFD_OPMODE_EXTENDED
| IXXAT_USBFD_OPMODE_STANDARD;
u8 can_exmode = 0;
if (dev->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)
can_opmode |= IXXAT_USBFD_OPMODE_ERRFRAME;
if (dev->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
can_opmode |= IXXAT_USBFD_OPMODE_LISTONLY;
if ((CAN_CTRLMODE_FD | CAN_CTRLMODE_FD_NON_ISO) & dev->can.ctrlmode)
can_exmode |= IXXAT_USBFD_EXMODE_EXTDATA |
IXXAT_USBFD_EXMODE_FASTDATA;
if (!(CAN_CTRLMODE_FD_NON_ISO & dev->can.ctrlmode) && can_exmode)
can_exmode |= IXXAT_USBFD_EXMODE_ISOFD;
/* Try to reset the controller, in case it is already initalized
from a previous unclean shutdown */
ixx_usbfd_reset_ctrl(dev);
err = ixx_usbfd_init_ctrl(dev, can_opmode,
can_exmode,
&dev->can.bittiming,
&dev->can.data_bittiming);
if (err)
return err;
/* opening first device: */
if (dev->ctrl_opened_count == 0) {
err = ixx_usbfd_start_ctrl(dev, &time_ref);
if (err)
return err;
ixxat_usb_set_ts_now(dev, time_ref);
}
dev->ctrl_opened_count++;
dev->bec.txerr = 0;
dev->bec.rxerr = 0;
return err;
}
/*
* stop interface
* (last chance before set bus off)
*/
static int ixx_usbfd_stop(struct ixx_usb_device *dev)
{
int err;
if (dev->ctrl_opened_count == 1) {
err = ixx_usbfd_stop_ctrl(dev);
if (err)
return err;
}
dev->ctrl_opened_count--;
return 0;
}
/*
* called when probing to initialize a device object.
*/
static int ixx_usbfd_init(struct ixx_usb_device *dev)
{
dev->restart_task = kthread_run(&ixx_usbfd_restart_task, dev,
"restart_thread");
if (!dev->restart_task)
return -ENOBUFS;
return 0;
}
static void ixx_usbfd_exit(struct ixx_usb_device *dev)
{
ixx_usbfd_reset_ctrl(dev);
dev->must_quit = 1;
dev->restart_flag = 1;
wake_up_interruptible(&dev->wait_queue);
if (dev->restart_task)
kthread_stop(dev->restart_task);
}
/*
* probe function for new IXXAT USB-to-CAN FD interface
*/
static int ixx_usbfd_probe(struct usb_interface *intf)
{
struct usb_host_interface *if_desc;
int i;
if_desc = intf->altsetting;
/* check interface endpoint addresses */
for (i = 0; i < if_desc->desc.bNumEndpoints; i++) {
struct usb_endpoint_descriptor *ep = &if_desc->endpoint[i].desc;
/*
* below is the list of valid ep addreses. Any other ep address
* is considered as not-CAN interface address => no dev created
*/
switch (ep->bEndpointAddress) {
case IXXAT_USBFD_EP_MSGOUT_0:
case IXXAT_USBFD_EP_MSGOUT_1:
case IXXAT_USBFD_EP_MSGOUT_2:
case IXXAT_USBFD_EP_MSGOUT_3:
case IXXAT_USBFD_EP_MSGOUT_4:
case IXXAT_USBFD_EP_MSGIN_0:
case IXXAT_USBFD_EP_MSGIN_1:
case IXXAT_USBFD_EP_MSGIN_2:
case IXXAT_USBFD_EP_MSGIN_3:
case IXXAT_USBFD_EP_MSGIN_4:
break;
default:
return -ENODEV;
}
}
return 0;
}
static int ixx_usbfd_get_dev_caps(struct usb_device *dev,
struct ixx_dev_caps *dev_caps)
{
int err = -ENODEV, i;
u8 data[IXXAT_USBFD_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbfd_dev_caps_req *dev_caps_req;
struct ixx_usbfd_dev_caps_res *dev_caps_res;
u32 req_size = sizeof(*dev_caps_req);
dev_caps_req = (struct ixx_usbfd_dev_caps_req *) data;
dev_caps_res = (struct ixx_usbfd_dev_caps_res *)(data + req_size);
dev_caps_req->dal_req.req_size = cpu_to_le32(req_size);
dev_caps_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBFD_BRD_GET_DEVCAPS_CMD);
dev_caps_req->dal_req.req_port = 0xffff;
dev_caps_req->dal_req.req_socket = 0xffff;
dev_caps_res->dal_res.res_size = cpu_to_le32(
sizeof(*dev_caps_res));
dev_caps_res->dal_res.ret_size = 0;
dev_caps_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbfd_send_cmd(dev, &dev_caps_req->dal_req);
if (err < 0)
return err;
err = ixx_usbfd_rcv_cmd(dev, &dev_caps_res->dal_res,
0xffff);
if (err < 0)
return err;
dev_caps->bus_ctrl_count =
le16_to_cpu(dev_caps_res->dev_caps.bus_ctrl_count);
for (i = 0; i < dev_caps->bus_ctrl_count; ++i)
dev_caps->bus_ctrl_types[i] =
le16_to_cpu(dev_caps_res->dev_caps.bus_ctrl_types[i]);
return 0;
}
static int ixx_usbfd_get_ctrl_caps(struct usb_device *dev,
struct ixx_ctrl_caps *ctrl_caps, int index)
{
int err = -ENODEV;
u8 data[IXXAT_USBFD_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbfd_ctrl_caps_req *ctrl_caps_req;
struct ixx_usbfd_ctrl_caps_res *ctrl_caps_res;
u32 req_size = sizeof(*ctrl_caps_req);
ctrl_caps_req = (struct ixx_usbfd_ctrl_caps_req *) data;
ctrl_caps_res = (struct ixx_usbfd_ctrl_caps_res *)(data + req_size);
ctrl_caps_req->dal_req.req_size = cpu_to_le32(req_size);
ctrl_caps_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBFD_CAN_GET_CAPS_CMD);
ctrl_caps_req->dal_req.req_port = cpu_to_le16(index);
ctrl_caps_req->dal_req.req_socket = 0xffff;
ctrl_caps_res->dal_res.res_size =
cpu_to_le32(sizeof(*ctrl_caps_res));
ctrl_caps_res->dal_res.ret_size = 0;
ctrl_caps_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbfd_send_cmd(dev, &ctrl_caps_req->dal_req);
if (err < 0)
return err;
err = ixx_usbfd_rcv_cmd(dev,
&ctrl_caps_res->dal_res,
index);
if (err < 0)
return err;
ctrl_caps->bus_coupling =
le16_to_cpu(ctrl_caps_res->ctrl_caps.bus_coupling);
ctrl_caps->clock_freq =
le32_to_cpu(ctrl_caps_res->ctrl_caps.clock_freq);
ctrl_caps->cms_divisor =
le32_to_cpu(ctrl_caps_res->ctrl_caps.cms_divisor);
ctrl_caps->cms_max_ticks =
le32_to_cpu(ctrl_caps_res->ctrl_caps.cms_max_ticks);
ctrl_caps->ctrl_type = le16_to_cpu(ctrl_caps_res->ctrl_caps.ctrl_type);
ctrl_caps->dtx_divisor =
le32_to_cpu(ctrl_caps_res->ctrl_caps.dtx_divisor);
ctrl_caps->dtx_max_ticks =
le32_to_cpu(ctrl_caps_res->ctrl_caps.dtx_max_ticks);
ctrl_caps->features = le32_to_cpu(ctrl_caps_res->ctrl_caps.features);
ctrl_caps->tsc_divisor =
le32_to_cpu(ctrl_caps_res->ctrl_caps.tsc_divisor);
return 0;
}
static int ixx_usbfd_get_fwinfo(struct ixx_usb_device *dev,
struct ixx_intf_fw_info *fwinfo)
{
int err = -ENODEV;
u8 data[IXXAT_USBFD_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbfd_brd_get_fwinfo_req *fw_info_req;
struct ixx_usbfd_brd_get_fwinfo_res *fw_info_res;
u32 req_size = sizeof(*fw_info_req);
fw_info_req = (struct ixx_usbfd_brd_get_fwinfo_req *) data;
fw_info_res = (struct ixx_usbfd_brd_get_fwinfo_res *)(data + req_size);
fw_info_req->dal_req.req_size = cpu_to_le32(req_size);
fw_info_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBFD_BRD_GET_FWINFO_CMD);
fw_info_req->dal_req.req_port = 0xffff;
fw_info_req->dal_req.req_socket = 0xffff;
fw_info_res->dal_res.res_size =
cpu_to_le32(sizeof(*fw_info_res));
fw_info_res->dal_res.ret_size = 0;
fw_info_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbfd_send_cmd(dev->udev, &fw_info_req->dal_req);
if (err < 0)
return err;
err = ixx_usbfd_rcv_cmd(dev->udev,
&fw_info_res->dal_res, 0xffff);
if (err < 0)
return err;
if (fwinfo) {
fwinfo->build_version = le16_to_cpu(
fw_info_res->fwinfo.build_version);
fwinfo->firmware_type = le32_to_cpu(
fw_info_res->fwinfo.firmware_type);
fwinfo->major_version = le16_to_cpu(
fw_info_res->fwinfo.major_version);
fwinfo->minor_version = le16_to_cpu(
fw_info_res->fwinfo.minor_version);
fwinfo->reserved = le16_to_cpu(fw_info_res->fwinfo.reserved);
}
return le32_to_cpu(fw_info_res->dal_res.ret_code);
}
static int ixx_usbfd_get_dev_info(struct ixx_usb_device *dev,
struct ixx_intf_info *dev_info)
{
int err = -ENODEV;
u8 data[IXXAT_USBFD_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbfd_brd_get_intf_info_req *dev_info_req;
struct ixx_usbfd_brd_get_intf_info_res *dev_info_res;
u32 req_size = sizeof(*dev_info_req);
dev_info_req = (struct ixx_usbfd_brd_get_intf_info_req *) data;
dev_info_res =
(struct ixx_usbfd_brd_get_intf_info_res *)(data + req_size);
dev_info_req->dal_req.req_size = cpu_to_le32(req_size);
dev_info_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBFD_BRD_GET_DEVINFO_CMD);
dev_info_req->dal_req.req_port = 0xffff;
dev_info_req->dal_req.req_socket = 0xffff;
dev_info_res->dal_res.res_size =
cpu_to_le32(sizeof(*dev_info_res));
dev_info_res->dal_res.ret_size = 0;
dev_info_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbfd_send_cmd(dev->udev,
&dev_info_req->dal_req);
if (err < 0)
return err;
err = ixx_usbfd_rcv_cmd(dev->udev,
&dev_info_res->dal_res,
0xffff);
if (err < 0)
return err;
if (dev_info) {
memcpy(dev_info->device_id, &dev_info_res->info.device_id,
sizeof(dev_info_res->info.device_id));
memcpy(dev_info->device_name, &dev_info_res->info.device_name,
sizeof(dev_info_res->info.device_name));
dev_info->device_fpga_version = le16_to_cpu(
dev_info_res->info.device_fpga_version);
dev_info->device_version = le32_to_cpu(
dev_info_res->info.device_version);
}
return le32_to_cpu(dev_info_res->dal_res.ret_code);
}
/*
* describes the USB-to-CAN FD automotive adapter
*/
struct ixx_usb_adapter usb_to_can_fd_automotive = {
.name = "USB-to-CAN FD automotive",
.device_id = USB_TO_CAN_FD_AUTOMOTIVE_PRODUCT_ID,
.clock = {
.freq = IFIFD_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ifi_can",
.tseg1_min = 1,
.tseg1_max = 256,
.tseg2_min = 1,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 513,
.brp_inc = 1, },
.data_bittiming_const = {
.name = "ifi_can",
.tseg1_min = 1,
.tseg1_max = 256,
.tseg2_min = 1,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 513,
.brp_inc = 1, },
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_LISTENONLY |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_FD |
CAN_CTRLMODE_FD_NON_ISO,
/* size of device private data */
.sizeof_dev_private = sizeof(const struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBFD_EP_MSGIN_0, IXXAT_USBFD_EP_MSGIN_1,
IXXAT_USBFD_EP_MSGIN_2, IXXAT_USBFD_EP_MSGIN_3,
IXXAT_USBFD_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBFD_EP_MSGOUT_0, IXXAT_USBFD_EP_MSGOUT_1,
IXXAT_USBFD_EP_MSGOUT_2, IXXAT_USBFD_EP_MSGOUT_3,
IXXAT_USBFD_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBFD_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBFD_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbfd_probe,
.dev_get_dev_caps = ixx_usbfd_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbfd_get_ctrl_caps,
.dev_init = ixx_usbfd_init,
.dev_exit = ixx_usbfd_exit,
.intf_get_info = ixx_usbfd_get_dev_info,
.intf_get_fw_info = ixx_usbfd_get_fwinfo,
.dev_decode_buf = ixx_usbfd_decode_buf,
.dev_encode_msg = ixx_usbfd_encode_msg,
.dev_start = ixx_usbfd_start,
.dev_stop = ixx_usbfd_stop,
.dev_power = ixx_usbfd_power_ctrl,
.has_bgi_ep = 1,
};
/*
* describes the USB-to-CAN FD compact adapter
*/
struct ixx_usb_adapter usb_to_can_fd_compact = {
.name = "USB-to-CAN FD compact",
.device_id = USB_TO_CAN_FD_COMPACT_PRODUCT_ID,
.clock = {
.freq = IFIFD_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ifi_can",
.tseg1_min = 1,
.tseg1_max = 256,
.tseg2_min = 1,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 513,
.brp_inc = 1, },
.data_bittiming_const = {
.name = "ifi_can",
.tseg1_min = 1,
.tseg1_max = 256,
.tseg2_min = 1,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 513,
.brp_inc = 1, },
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_LISTENONLY |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_FD |
CAN_CTRLMODE_FD_NON_ISO,
/* size of device private data */
.sizeof_dev_private = sizeof(const struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBFD_EP_MSGIN_0, IXXAT_USBFD_EP_MSGIN_1,
IXXAT_USBFD_EP_MSGIN_2, IXXAT_USBFD_EP_MSGIN_3,
IXXAT_USBFD_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBFD_EP_MSGOUT_0, IXXAT_USBFD_EP_MSGOUT_1,
IXXAT_USBFD_EP_MSGOUT_2, IXXAT_USBFD_EP_MSGOUT_3,
IXXAT_USBFD_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBFD_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBFD_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbfd_probe,
.dev_get_dev_caps = ixx_usbfd_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbfd_get_ctrl_caps,
.dev_init = ixx_usbfd_init,
.dev_exit = ixx_usbfd_exit,
.intf_get_info = ixx_usbfd_get_dev_info,
.intf_get_fw_info = ixx_usbfd_get_fwinfo,
.dev_decode_buf = ixx_usbfd_decode_buf,
.dev_encode_msg = ixx_usbfd_encode_msg,
.dev_start = ixx_usbfd_start,
.dev_stop = ixx_usbfd_stop,
.dev_power = ixx_usbfd_power_ctrl,
.has_bgi_ep = 1,
};
/*
* describes the DELL Edge GW3002
*/
struct ixx_usb_adapter dell_edge_gw3002 = {
.name = "USB DELL Edge GW3002",
.device_id = DELL_EDGE_GW3002_PRODUCT_ID,
.clock = {
.freq = IFIFD_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "mcan",
.tseg1_min = 1,
.tseg1_max = 64,
.tseg2_min = 1,
.tseg2_max = 16,
.sjw_max = 16,
.brp_min = 1,
.brp_max = 1024,
.brp_inc = 1, },
.data_bittiming_const = {
.name = "mcan",
.tseg1_min = 1,
.tseg1_max = 16,
.tseg2_min = 1,
.tseg2_max = 8,
.sjw_max = 4,
.brp_min = 1,
.brp_max = 32,
.brp_inc = 1, },
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_LISTENONLY |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_BERR_REPORTING
/* currently not supported
CAN_CTRLMODE_FD |
CAN_CTRLMODE_FD_NON_ISO
*/,
/* size of device private data */
.sizeof_dev_private = sizeof(const struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { DELL_EDGE_GW3002_EP_MSGIN_0, DELL_EDGE_GW3002_EP_MSGIN_1,
DELL_EDGE_GW3002_EP_MSGIN_2, DELL_EDGE_GW3002_EP_MSGIN_3,
DELL_EDGE_GW3002_EP_MSGIN_4 },
.ep_msg_out = { DELL_EDGE_GW3002_EP_MSGOUT_0, DELL_EDGE_GW3002_EP_MSGOUT_1,
DELL_EDGE_GW3002_EP_MSGOUT_2, DELL_EDGE_GW3002_EP_MSGOUT_3,
DELL_EDGE_GW3002_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBFD_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBFD_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbfd_probe,
.dev_get_dev_caps = ixx_usbfd_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbfd_get_ctrl_caps,
.dev_init = ixx_usbfd_init,
.dev_exit = ixx_usbfd_exit,
.intf_get_info = ixx_usbfd_get_dev_info,
.intf_get_fw_info = ixx_usbfd_get_fwinfo,
.dev_decode_buf = ixx_usbfd_decode_buf,
.dev_encode_msg = ixx_usbfd_encode_msg,
.dev_start = ixx_usbfd_start,
.dev_stop = ixx_usbfd_stop,
.dev_power = ixx_usbfd_power_ctrl,
.has_bgi_ep = 0,
};
/*
* describes the USB-to-CAN FD professional adapter
*/
struct ixx_usb_adapter usb_to_can_fd_professional = {
.name = "USB-to-CAN FD professional",
.device_id = USB_TO_CAN_FD_PROFESSIONAL_PRODUCT_ID,
.clock = {
.freq = IFIFD_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ifi_can",
.tseg1_min = 1,
.tseg1_max = 256,
.tseg2_min = 1,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 513,
.brp_inc = 1, },
.data_bittiming_const = {
.name = "ifi_can",
.tseg1_min = 1,
.tseg1_max = 256,
.tseg2_min = 1,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 513,
.brp_inc = 1, },
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_LISTENONLY |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_FD |
CAN_CTRLMODE_FD_NON_ISO,
/* size of device private data */
.sizeof_dev_private = sizeof(const struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBFD_EP_MSGIN_0, IXXAT_USBFD_EP_MSGIN_1,
IXXAT_USBFD_EP_MSGIN_2, IXXAT_USBFD_EP_MSGIN_3,
IXXAT_USBFD_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBFD_EP_MSGOUT_0, IXXAT_USBFD_EP_MSGOUT_1,
IXXAT_USBFD_EP_MSGOUT_2, IXXAT_USBFD_EP_MSGOUT_3,
IXXAT_USBFD_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBFD_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBFD_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbfd_probe,
.dev_get_dev_caps = ixx_usbfd_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbfd_get_ctrl_caps,
.dev_init = ixx_usbfd_init,
.dev_exit = ixx_usbfd_exit,
.intf_get_info = ixx_usbfd_get_dev_info,
.intf_get_fw_info = ixx_usbfd_get_fwinfo,
.dev_decode_buf = ixx_usbfd_decode_buf,
.dev_encode_msg = ixx_usbfd_encode_msg,
.dev_start = ixx_usbfd_start,
.dev_stop = ixx_usbfd_stop,
.dev_power = ixx_usbfd_power_ctrl,
.has_bgi_ep = 1,
};
/*
* describes the USB-to-CAN FD PCIe mini adapter
*/
struct ixx_usb_adapter usb_to_can_fd_pcie_mini = {
.name = "USB-to-CAN FD PCIe mini",
.device_id = USB_TO_CAN_FD_PCIE_MINI_PRODUCT_ID,
.clock = {
.freq = IFIFD_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ifi_can",
.tseg1_min = 1,
.tseg1_max = 256,
.tseg2_min = 1,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 513,
.brp_inc = 1, },
.data_bittiming_const = {
.name = "ifi_can",
.tseg1_min = 1,
.tseg1_max = 256,
.tseg2_min = 1,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 513,
.brp_inc = 1, },
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_LISTENONLY |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_FD |
CAN_CTRLMODE_FD_NON_ISO,
/* size of device private data */
.sizeof_dev_private = sizeof(const struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBFD_EP_MSGIN_0, IXXAT_USBFD_EP_MSGIN_1,
IXXAT_USBFD_EP_MSGIN_2, IXXAT_USBFD_EP_MSGIN_3,
IXXAT_USBFD_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBFD_EP_MSGOUT_0, IXXAT_USBFD_EP_MSGOUT_1,
IXXAT_USBFD_EP_MSGOUT_2, IXXAT_USBFD_EP_MSGOUT_3,
IXXAT_USBFD_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBFD_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBFD_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbfd_probe,
.dev_get_dev_caps = ixx_usbfd_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbfd_get_ctrl_caps,
.dev_init = ixx_usbfd_init,
.dev_exit = ixx_usbfd_exit,
.intf_get_info = ixx_usbfd_get_dev_info,
.intf_get_fw_info = ixx_usbfd_get_fwinfo,
.dev_decode_buf = ixx_usbfd_decode_buf,
.dev_encode_msg = ixx_usbfd_encode_msg,
.dev_start = ixx_usbfd_start,
.dev_stop = ixx_usbfd_stop,
.dev_power = ixx_usbfd_power_ctrl,
.has_bgi_ep = 1,
};
/*
* describes the USB-to-CAR adapter
*/
struct ixx_usb_adapter usb_to_car = {
.name = "USB-to-CAR",
.device_id = USB_TO_CAR_ID,
.clock = {
.freq = IFIFD_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ifi_can",
.tseg1_min = 1,
.tseg1_max = 256,
.tseg2_min = 1,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 513,
.brp_inc = 1, },
.data_bittiming_const = {
.name = "ifi_can",
.tseg1_min = 1,
.tseg1_max = 256,
.tseg2_min = 1,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 513,
.brp_inc = 1, },
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_LISTENONLY |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_FD |
CAN_CTRLMODE_FD_NON_ISO,
/* size of device private data */
.sizeof_dev_private = sizeof(const struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBFD_EP_MSGIN_0, IXXAT_USBFD_EP_MSGIN_1,
IXXAT_USBFD_EP_MSGIN_2, IXXAT_USBFD_EP_MSGIN_3,
IXXAT_USBFD_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBFD_EP_MSGOUT_0, IXXAT_USBFD_EP_MSGOUT_1,
IXXAT_USBFD_EP_MSGOUT_2, IXXAT_USBFD_EP_MSGOUT_3,
IXXAT_USBFD_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBFD_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBFD_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbfd_probe,
.dev_get_dev_caps = ixx_usbfd_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbfd_get_ctrl_caps,
.dev_init = ixx_usbfd_init,
.dev_exit = ixx_usbfd_exit,
.intf_get_info = ixx_usbfd_get_dev_info,
.intf_get_fw_info = ixx_usbfd_get_fwinfo,
.dev_decode_buf = ixx_usbfd_decode_buf,
.dev_encode_msg = ixx_usbfd_encode_msg,
.dev_start = ixx_usbfd_start,
.dev_stop = ixx_usbfd_stop,
.dev_power = ixx_usbfd_power_ctrl,
.has_bgi_ep = 1,
};
#endif // CANFD_CAPABLE
ubuntu/ixxat/ixx_usb_v2.c 0 → 100644
View file @ cddf5820
/*
* CAN driver for IXXAT USB-to-CAN V2
*
* Copyright (C) 2014 Michael Hengler <mhengler@ixxat.de>
*
* Based on code originally by pcan_usb_core
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published
* by the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#include <linux/netdevice.h>
#include <linux/usb.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/can.h>
#include <linux/can/dev.h>
#include <linux/can/error.h>
#include <linux/kthread.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/types.h>
#include <linux/gfp.h>
#include <asm-generic/errno.h>
#include <stdarg.h>
#include "ixx_usb_core.h"
MODULE_SUPPORTED_DEVICE("IXXAT Automation GmbH USB-to-CAN V2");
/* use sja 1000 clock due to internal bittiming calculations */
#define SJA1000_CRYSTAL_HZ 8000000
/* usb-to-can v2 Endpoints */
#define IXXAT_USBV2_EP_CMDOUT 0
#define IXXAT_USBV2_EP_CMDIN (IXXAT_USBV2_EP_CMDOUT | USB_DIR_IN)
#define IXXAT_USBV2_EP_MSGOUT_0 1
#define IXXAT_USBV2_EP_MSGIN_0 (IXXAT_USBV2_EP_MSGOUT_0 | USB_DIR_IN)
#define IXXAT_USBV2_EP_MSGOUT_1 2
#define IXXAT_USBV2_EP_MSGIN_1 (IXXAT_USBV2_EP_MSGOUT_1 | USB_DIR_IN)
#define IXXAT_USBV2_EP_MSGOUT_2 3
#define IXXAT_USBV2_EP_MSGIN_2 (IXXAT_USBV2_EP_MSGOUT_2 | USB_DIR_IN)
#define IXXAT_USBV2_EP_MSGOUT_3 4
#define IXXAT_USBV2_EP_MSGIN_3 (IXXAT_USBV2_EP_MSGOUT_3 | USB_DIR_IN)
#define IXXAT_USBV2_EP_MSGOUT_4 5
#define IXXAT_USBV2_EP_MSGIN_4 (IXXAT_USBV2_EP_MSGOUT_4 | USB_DIR_IN)
/* usb-to-can v2 rx/tx buffers size */
#define IXXAT_USBV2_RX_BUFFER_SIZE 512
#define IXXAT_USBV2_TX_BUFFER_SIZE 256
#define IXXAT_USBV2_CMD_BUFFER_SIZE 256
#define IXXAT_USBV2_OPMODE_STANDARD 0x01 /* reception of 11-bit id messages */
#define IXXAT_USBV2_OPMODE_EXTENDED 0x02 /* reception of 29-bit id messages */
#define IXXAT_USBV2_OPMODE_ERRFRAME 0x04 /* enable reception of error frames */
#define IXXAT_USBV2_OPMODE_LISTONLY 0x08 /* listen only mode (TX passive) */
/* Stuff error */
#define IXXAT_USBV2_CAN_ERROR_STUFF 1
/* Form error */
#define IXXAT_USBV2_CAN_ERROR_FORM 2
/* Acknowledgment error */
#define IXXAT_USBV2_CAN_ERROR_ACK 3
/* Bit error */
#define IXXAT_USBV2_CAN_ERROR_BIT 4
/* CRC error */
#define IXXAT_USBV2_CAN_ERROR_CRC 6
/* Other (unspecified) error */
#define IXXAT_USBV2_CAN_ERROR_OTHER 7
/* Data overrun occurred */
#define IXXAT_USBV2_CAN_STATUS_OVRRUN 0x02
/* Error warning limit exceeded */
#define IXXAT_USBV2_CAN_STATUS_ERRLIM 0x04
/* Bus off status */
#define IXXAT_USBV2_CAN_STATUS_BUSOFF 0x08
#define IXXAT_USBV2_CAN_DATA 0x00
#define IXXAT_USBV2_CAN_INFO 0x01
#define IXXAT_USBV2_CAN_ERROR 0x02
#define IXXAT_USBV2_CAN_STATUS 0x03
#define IXXAT_USBV2_CAN_WAKEUP 0x04
#define IXXAT_USBV2_CAN_TIMEOVR 0x05
#define IXXAT_USBV2_CAN_TIMERST 0x06
#define IXXAT_USBV2_MSG_FLAGS_TYPE 0x000000FF
#define IXXAT_USBV2_MSG_FLAGS_SSM 0x00000100
#define IXXAT_USBV2_MSG_FLAGS_HPM 0x00000600
#define IXXAT_USBV2_MSG_FLAGS_RES 0x0000F800
#define IXXAT_USBV2_MSG_FLAGS_DLC 0x000F0000
#define IXXAT_USBV2_MSG_FLAGS_OVR 0x00100000
#define IXXAT_USBV2_MSG_FLAGS_SRR 0x00200000
#define IXXAT_USBV2_MSG_FLAGS_RTR 0x00400000
#define IXXAT_USBV2_MSG_FLAGS_EXT 0x00800000
#define IXXAT_USBV2_MSG_FLAGS_AFC 0xFF000000
#define IXXAT_USBV2_BAL_CMD_CLASS 3
#define IXXAT_USBV2_BRD_CMD_CLASS 4
#define IXXAT_USBV2_BMG_CMD_CLASS 5
#define IXXAT_USBV2_BRD_CMD_CAT 0
#define IXXAT_USBV2_CAN_CMD_CAT 1
#define IXXAT_USBV2_VCI_CMD_CODE(Class, Function) \
((u32) (((Class) << 8) | (Function)))
#define IXXAT_USBV2_BRD_CMD_CODE(Category, Function) \
IXXAT_USBV2_VCI_CMD_CODE(IXXAT_USBV2_BRD_CMD_CLASS, \
((Category) << 5) | (Function))
#define IXXAT_USBV2_BAL_CMD_CODE(Category, Function) \
IXXAT_USBV2_VCI_CMD_CODE(IXXAT_USBV2_BAL_CMD_CLASS, \
((Category) << 5) | (Function))
#define IXXAT_USBV2_CAN_GET_CAPS_CMD \
IXXAT_USBV2_BAL_CMD_CODE(IXXAT_USBV2_CAN_CMD_CAT, 0)
#define IXXAT_USBV2_CAN_INIT_CMD \
IXXAT_USBV2_BAL_CMD_CODE(IXXAT_USBV2_CAN_CMD_CAT, 5)
#define IXXAT_USBV2_CAN_START_CMD \
IXXAT_USBV2_BAL_CMD_CODE(IXXAT_USBV2_CAN_CMD_CAT, 6)
#define IXXAT_USBV2_CAN_STOP_CMD \
IXXAT_USBV2_BAL_CMD_CODE(IXXAT_USBV2_CAN_CMD_CAT, 7)
#define IXXAT_USBV2_CAN_RESET_CMD \
IXXAT_USBV2_BAL_CMD_CODE(IXXAT_USBV2_CAN_CMD_CAT, 8)
#define IXXAT_USBV2_BRD_GET_FWINFO_CMD \
IXXAT_USBV2_BRD_CMD_CODE(IXXAT_USBV2_BRD_CMD_CAT, 0)
#define IXXAT_USBV2_BRD_GET_DEVCAPS_CMD \
IXXAT_USBV2_BRD_CMD_CODE(IXXAT_USBV2_BRD_CMD_CAT, 1)
#define IXXAT_USBV2_BRD_GET_DEVINFO_CMD \
IXXAT_USBV2_BRD_CMD_CODE(IXXAT_USBV2_BRD_CMD_CAT, 2)
struct ixx_usbv2_dal_req {
u32 req_size;
u16 req_port;
u16 req_socket;
u32 req_code;
} __packed;
struct ixx_usbv2_dal_res {
u32 res_size;
u32 ret_size;
u32 ret_code;
} __packed;
struct ixx_usbv2_dev_caps_req {
struct ixx_usbv2_dal_req dal_req;
} __packed;
struct ixx_usbv2_dev_caps_res {
struct ixx_usbv2_dal_res dal_res;
struct ixx_dev_caps dev_caps;
} __packed;
struct ixx_usbv2_ctrl_caps_req {
struct ixx_usbv2_dal_req dal_req;
} __packed;
struct ixx_usbv2_ctrl_caps_res {
struct ixx_usbv2_dal_res dal_res;
struct ixx_ctrl_caps ctrl_caps;
} __packed;
struct ixx_usbv2_ctrl_init_req {
struct ixx_usbv2_dal_req dal_req;
u8 mode;
u8 btr0;
u8 btr1;
u8 padding;
} __packed;
struct ixx_usbv2_ctrl_init_res {
struct ixx_usbv2_dal_res dal_res;
} __packed;
struct ixx_usbv2_ctrl_start_req {
struct ixx_usbv2_dal_req dal_req;
} __packed;
struct ixx_usbv2_ctrl_start_res {
struct ixx_usbv2_dal_res dal_res;
u32 start_time;
} __packed;
struct ixx_usbv2_ctrl_stop_req {
struct ixx_usbv2_dal_req dal_req;
u32 action;
} __packed;
struct ixx_usbv2_ctrl_stop_res {
struct ixx_usbv2_dal_res dal_res;
} __packed;
struct ixx_usbv2_brd_get_fwinfo_req {
struct ixx_usbv2_dal_req dal_req;
} __packed;
struct ixx_usbv2_brd_get_fwinfo_res {
struct ixx_usbv2_dal_res dal_res;
struct ixx_intf_fw_info fwinfo;
} __packed;
struct ixx_usbv2_brd_get_intf_info_req {
struct ixx_usbv2_dal_req dal_req;
} __packed;
struct ixx_usbv2_brd_get_intf_info_res {
struct ixx_usbv2_dal_res dal_res;
struct ixx_intf_info info;
} __packed;
/*
* send usb-to-can v2 command synchronously
*/
static int ixx_usbv2_send_cmd(struct usb_device *dev,
struct ixx_usbv2_dal_req *dal_req)
{
int err, i;
u16 size, value;
u8 request, requesttype;
u8 *buf;
request = 0xff;
requesttype = USB_TYPE_VENDOR | USB_DIR_OUT;
value = le16_to_cpu(dal_req->req_port);
size = le32_to_cpu(dal_req->req_size) +
sizeof(const struct ixx_usbv2_dal_res);
buf = kmalloc(size, GFP_KERNEL);
if(!buf)
return -ENOMEM;
memcpy(buf, (u8 *)dal_req, size);
for (i = 0; i < 10; ++i) {
err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
requesttype,
value,
0,
buf,
size,
msecs_to_jiffies(50));
if (err < 0)
msleep(20);
else
break;
}
kfree(buf);
if (err < 0) {
dev_err(&dev->dev, "sending command failure: %d\n", err);
return err;
}
return 0;
}
/*
* receive usb-to-can v2 command synchronously
*/
static int ixx_usbv2_rcv_cmd(struct usb_device *dev,
struct ixx_usbv2_dal_res *dal_res, int value)
{
int err, res_size, i, size_to_read;
u8 request, requesttype;
u8 *buf;
request = 0xff;
requesttype = USB_TYPE_VENDOR | USB_DIR_IN;
res_size = 0;
size_to_read = le32_to_cpu(dal_res->res_size);
buf = kmalloc(size_to_read, GFP_KERNEL);
if(!buf)
return -ENOMEM;
for (i = 0; i < 10; ++i) {
err = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
requesttype, value,
0, buf + (u8) res_size,
size_to_read - res_size, msecs_to_jiffies(50));
if (err < 0) {
msleep(20);
continue;
}
res_size += err;
if (res_size < size_to_read)
msleep(20);
else
break;
}
if (res_size != size_to_read)
err = -EBADMSG;
if (err < 0) {
dev_err(&dev->dev, "receiving command failure: %d\n", err);
kfree(buf);
return err;
}
memcpy((u8 *)dal_res, buf, size_to_read);
kfree(buf);
return err;
}
static int ixx_usbv2_init_ctrl(struct ixx_usb_device *dev, u8 mode, u8 btr0,
u8 btr1)
{
int err = -ENODEV;
u8 data[IXXAT_USBV2_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbv2_ctrl_init_req *ctrl_init_req;
struct ixx_usbv2_ctrl_init_res *ctrl_init_res;
u32 req_size = sizeof(*ctrl_init_req);
ctrl_init_req = (struct ixx_usbv2_ctrl_init_req *) data;
ctrl_init_res = (struct ixx_usbv2_ctrl_init_res *)(data + req_size);
ctrl_init_req->dal_req.req_size = cpu_to_le32(req_size);
ctrl_init_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBV2_CAN_INIT_CMD);
ctrl_init_req->dal_req.req_port = cpu_to_le16(dev->ctrl_idx);
ctrl_init_req->dal_req.req_socket = 0xffff;
ctrl_init_req->mode = mode;
ctrl_init_req->btr0 = btr0;
ctrl_init_req->btr1 = btr1;
ctrl_init_res->dal_res.res_size = cpu_to_le32(
sizeof(*ctrl_init_res));
ctrl_init_res->dal_res.ret_size = 0;
ctrl_init_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbv2_send_cmd(dev->udev, &ctrl_init_req->dal_req);
if (err < 0)
return err;
err = ixx_usbv2_rcv_cmd(dev->udev,
&ctrl_init_res->dal_res,
dev->ctrl_idx);
if (err < 0)
return err;
return le32_to_cpu(ctrl_init_res->dal_res.ret_code);
}
static int ixx_usbv2_start_ctrl(struct ixx_usb_device *dev, u32 *time_ref)
{
int err = -ENODEV;
u8 data[IXXAT_USBV2_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbv2_ctrl_start_req *ctrl_start_req;
struct ixx_usbv2_ctrl_start_res *ctrl_start_res;
u32 req_size = sizeof(*ctrl_start_req);
ctrl_start_req = (struct ixx_usbv2_ctrl_start_req *) data;
ctrl_start_res = (struct ixx_usbv2_ctrl_start_res *)(data + req_size);
ctrl_start_req->dal_req.req_size = cpu_to_le32(req_size);
ctrl_start_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBV2_CAN_START_CMD);
ctrl_start_req->dal_req.req_port = cpu_to_le16(dev->ctrl_idx);
ctrl_start_req->dal_req.req_socket = 0xffff;
ctrl_start_res->dal_res.res_size = cpu_to_le32(
sizeof(*ctrl_start_res));
ctrl_start_res->dal_res.ret_size = 0;
ctrl_start_res->dal_res.ret_code = 0xffffffff;
ctrl_start_res->start_time = 0;
err = ixx_usbv2_send_cmd(dev->udev, &ctrl_start_req->dal_req);
if (err < 0)
return err;
err = ixx_usbv2_rcv_cmd(dev->udev,
&ctrl_start_res->dal_res,
dev->ctrl_idx);
if (err < 0)
return err;
if (time_ref)
*time_ref = le32_to_cpu(ctrl_start_res->start_time);
return le32_to_cpu(ctrl_start_res->dal_res.ret_code);
}
static int ixx_usbv2_stop_ctrl(struct ixx_usb_device *dev)
{
int err = -ENODEV;
u8 data[IXXAT_USBV2_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbv2_ctrl_stop_req *ctrl_stop_req;
struct ixx_usbv2_ctrl_stop_res *ctrl_stop_res;
u32 req_size = sizeof(struct ixx_usbv2_ctrl_stop_req);
ctrl_stop_req = (struct ixx_usbv2_ctrl_stop_req *) data;
ctrl_stop_res = (struct ixx_usbv2_ctrl_stop_res *)(data + req_size);
ctrl_stop_req->dal_req.req_size = cpu_to_le32(req_size);
ctrl_stop_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBV2_CAN_STOP_CMD);
ctrl_stop_req->dal_req.req_port = cpu_to_le16(dev->ctrl_idx);
ctrl_stop_req->dal_req.req_socket = 0xffff;
ctrl_stop_req->action = cpu_to_le32(0x3);
ctrl_stop_res->dal_res.res_size =
cpu_to_le32(sizeof(*ctrl_stop_res));
ctrl_stop_res->dal_res.ret_size = 0;
ctrl_stop_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbv2_send_cmd(dev->udev, &ctrl_stop_req->dal_req);
if (err < 0)
return err;
err = ixx_usbv2_rcv_cmd(dev->udev,
&ctrl_stop_res->dal_res,
dev->ctrl_idx);
if (err < 0)
return err;
if (!le32_to_cpu(ctrl_stop_res->dal_res.ret_code))
dev->can.state = CAN_STATE_STOPPED;
return le32_to_cpu(ctrl_stop_res->dal_res.ret_code);
}
static int ixx_usbv2_reset_ctrl(struct ixx_usb_device *dev)
{
int err = -ENODEV;
u8 data[IXXAT_USBV2_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbv2_dal_req *dal_req;
struct ixx_usbv2_dal_res *dal_res;
u32 req_size = sizeof(*dal_req);
dal_req = (struct ixx_usbv2_dal_req *) data;
dal_res = (struct ixx_usbv2_dal_res *)(data + req_size);
dal_req->req_size = cpu_to_le32(req_size);
dal_req->req_code = cpu_to_le32(IXXAT_USBV2_CAN_RESET_CMD);
dal_req->req_port = cpu_to_le16(dev->ctrl_idx);
dal_req->req_socket = 0xffff;
dal_res->res_size = cpu_to_le32(sizeof(*dal_res));
dal_res->ret_size = 0;
dal_res->ret_code = 0xffffffff;
err = ixx_usbv2_send_cmd(dev->udev, dal_req);
if (err < 0)
return err;
err = ixx_usbv2_rcv_cmd(dev->udev, dal_res,
dev->ctrl_idx);
if (err < 0)
return err;
return le32_to_cpu(dal_res->ret_code);
}
static int ixx_usbv2_set_bittiming(struct ixx_usb_device *dev,
struct can_bittiming *bt)
{
u8 btr0 = 0, btr1 = 0, can_opmode = 0;
btr0 = ((bt->brp - 1) & 0x3f) | (((bt->sjw - 1) & 0x3) << 6);
btr1 = ((bt->prop_seg + bt->phase_seg1 - 1) & 0xf)
| (((bt->phase_seg2 - 1) & 0x7) << 4);
if (dev->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES)
btr1 |= 0x80;
can_opmode = IXXAT_USBV2_OPMODE_EXTENDED | IXXAT_USBV2_OPMODE_STANDARD;
if (dev->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)
can_opmode |= IXXAT_USBV2_OPMODE_ERRFRAME;
if (dev->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
can_opmode |= IXXAT_USBV2_OPMODE_LISTONLY;
dev->btr0 = btr0;
dev->btr1 = btr1;
netdev_dbg(dev->netdev, "setting btr0=0x%08x btr1=0x%08x mode=0x%08x\n",
btr0, btr1, can_opmode);
return ixx_usbv2_init_ctrl(dev, can_opmode, btr0, btr1);
}
/*
* handle restart but in asynchronously way
*/
static int ixx_usbv2_restart_task(void *user_data)
{
u32 time_ref;
struct ixx_usb_device *dev = user_data;
while (!kthread_should_stop()) {
if (!dev->must_quit) {
wait_event_interruptible(dev->wait_queue,
dev->restart_flag);
if (!dev->must_quit) {
ixx_usbv2_stop_ctrl(dev);
ixx_usbv2_start_ctrl(dev, &time_ref);
dev->restart_flag = 0;
dev->can.state = CAN_STATE_ERROR_ACTIVE;
}
} else
msleep(20);
}
return 0;
}
static int ixx_usbv2_handle_canmsg(struct ixx_usb_device *dev,
struct ixx_can_msg *rx)
{
struct net_device *netdev = dev->netdev;
struct can_frame *can_frame;
struct sk_buff *skb;
skb = alloc_can_skb(netdev, &can_frame);
if (!skb)
return -ENOMEM;
if (le32_to_cpu(rx->flags) & IXXAT_USBV2_MSG_FLAGS_OVR) {
netdev->stats.rx_over_errors++;
netdev->stats.rx_errors++;
}
can_frame->can_id = le32_to_cpu(rx->msg_id);
can_frame->can_dlc =
(le32_to_cpu(rx->flags) &
IXXAT_USBV2_MSG_FLAGS_DLC) >> 16;
if (le32_to_cpu(rx->flags) & IXXAT_USBV2_MSG_FLAGS_EXT)
can_frame->can_id |= CAN_EFF_FLAG;
if (le32_to_cpu(rx->flags) & IXXAT_USBV2_MSG_FLAGS_RTR)
can_frame->can_id |= CAN_RTR_FLAG;
else
memcpy(can_frame->data, rx->data, can_frame->can_dlc);
ixxat_usb_get_ts_tv(dev, le32_to_cpu(rx->time), &skb->tstamp);
netif_rx(skb);
netdev->stats.rx_packets++;
netdev->stats.rx_bytes += can_frame->can_dlc;
return 0;
}
static int ixx_usbv2_handle_error(struct ixx_usb_device *dev,
struct ixx_can_msg *rx)
{
struct net_device *netdev = dev->netdev;
struct can_frame *can_frame;
struct sk_buff *skb;
u8 raw_status = 0;
/* nothing should be sent while in BUS_OFF state */
if (dev->can.state == CAN_STATE_BUS_OFF)
return 0;
raw_status = rx->data[0];
/* allocate an skb to store the error frame */
skb = alloc_can_err_skb(netdev, &can_frame);
if (!skb)
return -ENOMEM;
switch (raw_status) {
case IXXAT_USBV2_CAN_ERROR_ACK:
can_frame->can_id |= CAN_ERR_ACK;
netdev->stats.tx_errors++;
break;
case IXXAT_USBV2_CAN_ERROR_BIT:
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[2] |= CAN_ERR_PROT_BIT;
netdev->stats.rx_errors++;
break;
case IXXAT_USBV2_CAN_ERROR_CRC:
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ;
netdev->stats.rx_errors++;
break;
case IXXAT_USBV2_CAN_ERROR_FORM:
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[2] |= CAN_ERR_PROT_FORM;
netdev->stats.rx_errors++;
break;
case IXXAT_USBV2_CAN_ERROR_STUFF:
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[2] |= CAN_ERR_PROT_STUFF;
netdev->stats.rx_errors++;
break;
case IXXAT_USBV2_CAN_ERROR_OTHER:
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[2] |= CAN_ERR_PROT_UNSPEC;
netdev->stats.rx_errors++;
break;
default:
can_frame->can_id |= CAN_ERR_PROT;
netdev->stats.rx_errors++;
}
netif_rx(skb);
netdev->stats.rx_packets++;
netdev->stats.rx_bytes += can_frame->can_dlc;
dev->bec.txerr = le16_to_cpu(rx->data[1]);
dev->bec.rxerr = le16_to_cpu(rx->data[3]);
return 0;
}
static int ixx_usbv2_handle_status(struct ixx_usb_device *dev,
struct ixx_can_msg *rx)
{
struct net_device *netdev = dev->netdev;
struct can_frame *can_frame;
struct sk_buff *skb;
u8 raw_status = 0;
u32 new_state = 0;
raw_status = rx->data[0];
/* nothing should be sent while in BUS_OFF state */
if (dev->can.state == CAN_STATE_BUS_OFF)
return 0;
if (!raw_status) {
/* no error bit (back to active state) */
dev->can.state = CAN_STATE_ERROR_ACTIVE;
dev->bec.txerr = 0;
dev->bec.rxerr = 0;
return 0;
}
/* allocate an skb to store the error frame */
skb = alloc_can_err_skb(netdev, &can_frame);
if (!skb)
return -ENOMEM;
if (raw_status & IXXAT_USBV2_CAN_STATUS_BUSOFF) {
can_frame->can_id |= CAN_ERR_BUSOFF;
new_state = CAN_STATE_BUS_OFF;
dev->can.can_stats.bus_off++;
can_bus_off(netdev);
} else {
if (raw_status & IXXAT_USBV2_CAN_STATUS_ERRLIM) {
can_frame->can_id |= CAN_ERR_CRTL;
can_frame->data[1] |= CAN_ERR_CRTL_TX_WARNING;
can_frame->data[1] |= CAN_ERR_CRTL_RX_WARNING;
dev->can.can_stats.error_warning++;
new_state = CAN_STATE_ERROR_WARNING;
}
if (raw_status & IXXAT_USBV2_CAN_STATUS_OVRRUN) {
can_frame->can_id |= CAN_ERR_PROT;
can_frame->data[2] |= CAN_ERR_PROT_OVERLOAD;
netdev->stats.rx_over_errors++;
netdev->stats.rx_errors++;
}
if (!new_state) {
new_state = CAN_STATE_ERROR_ACTIVE;
dev->bec.txerr = 0;
dev->bec.rxerr = 0;
}
}
dev->can.state = new_state;
netif_rx(skb);
netdev->stats.rx_packets++;
netdev->stats.rx_bytes += can_frame->can_dlc;
return 0;
}
/*
* callback for bulk IN urb
*/
static int ixx_usbv2_decode_buf(struct ixx_usb_device *dev, struct urb *urb)
{
struct net_device *netdev = dev->netdev;
struct ixx_can_msg *can_msg;
u32 msg_end;
int err = 0;
u32 read_size = 0;
u8 msg_type;
u8 *data;
data = urb->transfer_buffer;
/* loop reading all the records from the incoming message */
msg_end = urb->actual_length;
for (; msg_end > 0;) {
can_msg = (struct ixx_can_msg *) &data[read_size];
if (!can_msg || !can_msg->size) {
netdev_err(netdev, "got unsupported rec in usb msg:\n");
err = -ENOTSUPP;
break;
}
/* check if the record goes out of current packet */
if ((read_size + can_msg->size + 1) > urb->actual_length) {
netdev_err(netdev,
"got frag rec: should inc usb rx buf size\n");
err = -EBADMSG;
break;
}
msg_type =
(le32_to_cpu(can_msg->flags) &
IXXAT_USBV2_MSG_FLAGS_TYPE);
switch (msg_type) {
case IXXAT_USBV2_CAN_DATA:
err = ixx_usbv2_handle_canmsg(dev, can_msg);
if (err < 0)
goto fail;
break;
case IXXAT_USBV2_CAN_STATUS:
err = ixx_usbv2_handle_status(dev, can_msg);
if (err < 0)
goto fail;
break;
case IXXAT_USBV2_CAN_ERROR:
err = ixx_usbv2_handle_error(dev, can_msg);
if (err < 0)
goto fail;
break;
case IXXAT_USBV2_CAN_TIMEOVR:
ixxat_usb_get_ts_tv(dev, can_msg->time, NULL);
break;
case IXXAT_USBV2_CAN_INFO:
case IXXAT_USBV2_CAN_WAKEUP:
case IXXAT_USBV2_CAN_TIMERST:
break;
default:
netdev_err(netdev,
"unhandled rec type 0x%02x (%d): ignored\n",
msg_type, msg_type);
break;
}
read_size += can_msg->size + 1;
msg_end -= (can_msg->size + 1);
}
fail:
if (err)
ixxat_dump_mem("received msg", urb->transfer_buffer,
urb->actual_length);
return err;
}
static int ixx_usbv2_encode_msg(struct ixx_usb_device *dev, struct sk_buff *skb,
u8 *obuf, size_t *size)
{
struct can_frame *cf = (struct can_frame *) skb->data;
struct ixx_can_msg can_msg = { 0 };
if (cf->can_id & CAN_RTR_FLAG)
can_msg.flags |= IXXAT_USBV2_MSG_FLAGS_RTR;
if (cf->can_id & CAN_EFF_FLAG) {
can_msg.flags |= IXXAT_USBV2_MSG_FLAGS_EXT;
can_msg.msg_id = cf->can_id & CAN_EFF_MASK;
} else {
can_msg.msg_id = cf->can_id & CAN_SFF_MASK;
}
if (dev->can.ctrlmode & CAN_CTRLMODE_ONE_SHOT)
can_msg.flags |= IXXAT_USBV2_MSG_FLAGS_SSM;
can_msg.flags |= (cf->can_dlc << 16) & IXXAT_USBV2_MSG_FLAGS_DLC;
can_msg.flags = cpu_to_le32(can_msg.flags);
can_msg.msg_id = cpu_to_le32(can_msg.msg_id);
memcpy(can_msg.data, cf->data, cf->can_dlc);
can_msg.size = (u8)(sizeof(can_msg) - 1 - CAN_MAX_DLEN + cf->can_dlc);
memcpy(obuf, &can_msg, can_msg.size + 1);
*size = can_msg.size + 1;
skb->data_len = *size;
return 0;
}
static int ixx_usbv2_start(struct ixx_usb_device *dev)
{
int err;
u32 time_ref = 0;
u8 can_opmode = IXXAT_USBV2_OPMODE_EXTENDED
| IXXAT_USBV2_OPMODE_STANDARD;
if (dev->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)
can_opmode |= IXXAT_USBV2_OPMODE_ERRFRAME;
if (dev->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
can_opmode |= IXXAT_USBV2_OPMODE_LISTONLY;
err = ixx_usbv2_init_ctrl(dev, can_opmode, dev->btr0, dev->btr1);
if (err)
return err;
/* opening first device: */
if (dev->ctrl_opened_count == 0) {
err = ixx_usbv2_start_ctrl(dev, &time_ref);
if (err)
return err;
ixxat_usb_set_ts_now(dev, time_ref);
}
dev->ctrl_opened_count++;
dev->bec.txerr = 0;
dev->bec.rxerr = 0;
return err;
}
/*
* stop interface
* (last chance before set bus off)
*/
static int ixx_usbv2_stop(struct ixx_usb_device *dev)
{
int err;
if (dev->ctrl_opened_count == 1) {
err = ixx_usbv2_stop_ctrl(dev);
if (err)
return err;
}
/* turn off ts msgs for that interface if no other dev opened */
// if (pdev->usb_if->dev_opened_count == 1)
// ixx_usbv2_set_ts(dev, 0);
dev->ctrl_opened_count--;
return 0;
}
/*
* called when probing to initialize a device object.
*/
static int ixx_usbv2_init(struct ixx_usb_device *dev)
{
dev->restart_task = kthread_run(&ixx_usbv2_restart_task, dev,
"restart_thread");
if (!dev->restart_task)
return -ENOBUFS;
return 0;
}
static void ixx_usbv2_exit(struct ixx_usb_device *dev)
{
ixx_usbv2_reset_ctrl(dev);
dev->must_quit = 1;
dev->restart_flag = 1;
wake_up_interruptible(&dev->wait_queue);
if (dev->restart_task)
kthread_stop(dev->restart_task);
}
/*
* probe function for new IXXAT USB-to-CAN V2 interface
*/
static int ixx_usbv2_probe(struct usb_interface *intf)
{
struct usb_host_interface *if_desc;
int i;
if_desc = intf->altsetting;
/* check interface endpoint addresses */
for (i = 0; i < if_desc->desc.bNumEndpoints; i++) {
struct usb_endpoint_descriptor *ep = &if_desc->endpoint[i].desc;
/*
* below is the list of valid ep addreses. Any other ep address
* is considered as not-CAN interface address => no dev created
*/
switch (ep->bEndpointAddress) {
case IXXAT_USBV2_EP_MSGOUT_0:
case IXXAT_USBV2_EP_MSGOUT_1:
case IXXAT_USBV2_EP_MSGOUT_2:
case IXXAT_USBV2_EP_MSGOUT_3:
case IXXAT_USBV2_EP_MSGOUT_4:
case IXXAT_USBV2_EP_MSGIN_0:
case IXXAT_USBV2_EP_MSGIN_1:
case IXXAT_USBV2_EP_MSGIN_2:
case IXXAT_USBV2_EP_MSGIN_3:
case IXXAT_USBV2_EP_MSGIN_4:
break;
default:
return -ENODEV;
}
}
return 0;
}
static int ixx_usbv2_get_dev_caps(struct usb_device *dev,
struct ixx_dev_caps *dev_caps)
{
int err = -ENODEV, i;
u8 data[IXXAT_USBV2_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbv2_dev_caps_req *dev_caps_req;
struct ixx_usbv2_dev_caps_res *dev_caps_res;
u32 req_size = sizeof(*dev_caps_req);
dev_caps_req = (struct ixx_usbv2_dev_caps_req *) data;
dev_caps_res = (struct ixx_usbv2_dev_caps_res *)(data + req_size);
dev_caps_req->dal_req.req_size = cpu_to_le32(req_size);
dev_caps_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBV2_BRD_GET_DEVCAPS_CMD);
dev_caps_req->dal_req.req_port = 0xffff;
dev_caps_req->dal_req.req_socket = 0xffff;
dev_caps_res->dal_res.res_size =
cpu_to_le32(sizeof(*dev_caps_res));
dev_caps_res->dal_res.ret_size = 0;
dev_caps_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbv2_send_cmd(dev, &dev_caps_req->dal_req);
if (err < 0)
return err;
err = ixx_usbv2_rcv_cmd(dev, &dev_caps_res->dal_res,
0xffff);
if (err < 0)
return err;
dev_caps->bus_ctrl_count =
le16_to_cpu(dev_caps_res->dev_caps.bus_ctrl_count);
for (i = 0; i < dev_caps->bus_ctrl_count; ++i)
dev_caps->bus_ctrl_types[i] =
le16_to_cpu(dev_caps_res->dev_caps.bus_ctrl_types[i]);
return 0;
}
static int ixx_usbv2_get_ctrl_caps(struct usb_device *dev,
struct ixx_ctrl_caps *ctrl_caps, int index)
{
int err = -ENODEV;
u8 data[IXXAT_USBV2_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbv2_ctrl_caps_req *ctrl_caps_req;
struct ixx_usbv2_ctrl_caps_res *ctrl_caps_res;
u32 req_size = sizeof(*ctrl_caps_req);
ctrl_caps_req = (struct ixx_usbv2_ctrl_caps_req *) data;
ctrl_caps_res = (struct ixx_usbv2_ctrl_caps_res *)(data + req_size);
ctrl_caps_req->dal_req.req_size = cpu_to_le32(req_size);
ctrl_caps_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBV2_CAN_GET_CAPS_CMD);
ctrl_caps_req->dal_req.req_port = cpu_to_le16(index);
ctrl_caps_req->dal_req.req_socket = 0xffff;
ctrl_caps_res->dal_res.res_size =
cpu_to_le32(sizeof(*ctrl_caps_res));
ctrl_caps_res->dal_res.ret_size = 0;
ctrl_caps_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbv2_send_cmd(dev, &ctrl_caps_req->dal_req);
if (err < 0)
return err;
err = ixx_usbv2_rcv_cmd(dev, &ctrl_caps_res->dal_res,
index);
if (err < 0)
return err;
ctrl_caps->bus_coupling = le16_to_cpu(
ctrl_caps_res->ctrl_caps.bus_coupling);
ctrl_caps->clock_freq =
le32_to_cpu(ctrl_caps_res->ctrl_caps.clock_freq);
ctrl_caps->cms_divisor = le32_to_cpu(
ctrl_caps_res->ctrl_caps.cms_divisor);
ctrl_caps->cms_max_ticks = le32_to_cpu(
ctrl_caps_res->ctrl_caps.cms_max_ticks);
ctrl_caps->ctrl_type = le16_to_cpu(ctrl_caps_res->ctrl_caps.ctrl_type);
ctrl_caps->dtx_divisor = le32_to_cpu(
ctrl_caps_res->ctrl_caps.dtx_divisor);
ctrl_caps->dtx_max_ticks = le32_to_cpu(
ctrl_caps_res->ctrl_caps.dtx_max_ticks);
ctrl_caps->features = le32_to_cpu(ctrl_caps_res->ctrl_caps.features);
ctrl_caps->tsc_divisor = le32_to_cpu(
ctrl_caps_res->ctrl_caps.tsc_divisor);
return 0;
}
static int ixx_usbv2_get_fwinfo(struct ixx_usb_device *dev,
struct ixx_intf_fw_info *fwinfo)
{
int err = -ENODEV;
u8 data[IXXAT_USBV2_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbv2_brd_get_fwinfo_req *fw_info_req;
struct ixx_usbv2_brd_get_fwinfo_res *fw_info_res;
u32 req_size = sizeof(*fw_info_req);
fw_info_req = (struct ixx_usbv2_brd_get_fwinfo_req *) data;
fw_info_res = (struct ixx_usbv2_brd_get_fwinfo_res *)(data + req_size);
fw_info_req->dal_req.req_size = cpu_to_le32(req_size);
fw_info_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBV2_BRD_GET_FWINFO_CMD);
fw_info_req->dal_req.req_port = 0xffff;
fw_info_req->dal_req.req_socket = 0xffff;
fw_info_res->dal_res.res_size =
cpu_to_le32(sizeof(*fw_info_res));
fw_info_res->dal_res.ret_size = 0;
fw_info_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbv2_send_cmd(dev->udev, &fw_info_req->dal_req);
if (err < 0)
return err;
err = ixx_usbv2_rcv_cmd(dev->udev,
&fw_info_res->dal_res, 0xffff);
if (err < 0)
return err;
if (fwinfo) {
fwinfo->build_version =
le16_to_cpu(fw_info_res->fwinfo.build_version);
fwinfo->firmware_type =
le32_to_cpu(fw_info_res->fwinfo.firmware_type);
fwinfo->major_version =
le16_to_cpu(fw_info_res->fwinfo.major_version);
fwinfo->minor_version =
le16_to_cpu(fw_info_res->fwinfo.minor_version);
fwinfo->reserved =
le16_to_cpu(fw_info_res->fwinfo.reserved);
}
return le32_to_cpu(fw_info_res->dal_res.ret_code);
}
static int ixx_usbv2_get_dev_info(struct ixx_usb_device *dev,
struct ixx_intf_info *dev_info)
{
int err = -ENODEV;
u8 data[IXXAT_USBV2_CMD_BUFFER_SIZE] = { 0 };
struct ixx_usbv2_brd_get_intf_info_req *dev_info_req;
struct ixx_usbv2_brd_get_intf_info_res *dev_info_res;
u32 req_size = sizeof(*dev_info_req);
dev_info_req = (struct ixx_usbv2_brd_get_intf_info_req *) data;
dev_info_res =
(struct ixx_usbv2_brd_get_intf_info_res *)(data + req_size);
dev_info_req->dal_req.req_size = cpu_to_le32(req_size);
dev_info_req->dal_req.req_code =
cpu_to_le32(IXXAT_USBV2_BRD_GET_DEVINFO_CMD);
dev_info_req->dal_req.req_port = 0xffff;
dev_info_req->dal_req.req_socket = 0xffff;
dev_info_res->dal_res.res_size =
cpu_to_le32(sizeof(*dev_info_res));
dev_info_res->dal_res.ret_size = 0;
dev_info_res->dal_res.ret_code = 0xffffffff;
err = ixx_usbv2_send_cmd(dev->udev, &dev_info_req->dal_req);
if (err < 0)
return err;
err = ixx_usbv2_rcv_cmd(dev->udev,
&dev_info_res->dal_res, 0xffff);
if (err < 0)
return err;
if (dev_info) {
memcpy(dev_info->device_id, &dev_info_res->info.device_id,
sizeof(dev_info_res->info.device_id));
memcpy(dev_info->device_name, &dev_info_res->info.device_name,
sizeof(dev_info_res->info.device_name));
dev_info->device_fpga_version =
le16_to_cpu(dev_info_res->info.device_fpga_version);
dev_info->device_version =
le32_to_cpu(dev_info_res->info.device_version);
}
return le32_to_cpu(dev_info_res->dal_res.ret_code);
}
/*
* describe the describes the USB-to-CAN V2 compact adapter
*/
struct ixx_usb_adapter usb_to_can_v2_compact = {
.name = "USB-to-CAN V2 compact",
.device_id = USB_TO_CAN_V2_COMPACT_PRODUCT_ID,
.clock = {
.freq = SJA1000_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ixxat_usb",
.tseg1_min = 1,
.tseg1_max = 16,
.tseg2_min = 1,
.tseg2_max = 8,
.sjw_max = 4,
.brp_min = 1,
.brp_max = 64,
.brp_inc = 1,
},
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_LISTENONLY,
/* size of device private data */
.sizeof_dev_private = sizeof(struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBV2_EP_MSGIN_0, IXXAT_USBV2_EP_MSGIN_1,
IXXAT_USBV2_EP_MSGIN_2, IXXAT_USBV2_EP_MSGIN_3,
IXXAT_USBV2_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBV2_EP_MSGOUT_0, IXXAT_USBV2_EP_MSGOUT_1,
IXXAT_USBV2_EP_MSGOUT_2, IXXAT_USBV2_EP_MSGOUT_3,
IXXAT_USBV2_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBV2_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBV2_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbv2_probe,
.dev_get_dev_caps = ixx_usbv2_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbv2_get_ctrl_caps,
.dev_init = ixx_usbv2_init,
.dev_exit = ixx_usbv2_exit,
.dev_set_bittiming = ixx_usbv2_set_bittiming,
.intf_get_info = ixx_usbv2_get_dev_info,
.intf_get_fw_info = ixx_usbv2_get_fwinfo,
.dev_decode_buf = ixx_usbv2_decode_buf,
.dev_encode_msg = ixx_usbv2_encode_msg,
.dev_start = ixx_usbv2_start,
.dev_stop = ixx_usbv2_stop,
};
/*
* describes the USB-to-CAN V2 automotive adapter
*/
struct ixx_usb_adapter usb_to_can_v2_automotive = {
.name = "USB-to-CAN V2 automotive",
.device_id = USB_TO_CAN_V2_AUTOMOTIVE_PRODUCT_ID,
.clock = {
.freq = SJA1000_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ixxat_usb",
.tseg1_min = 1,
.tseg1_max = 16,
.tseg2_min = 1,
.tseg2_max = 8,
.sjw_max = 4,
.brp_min = 1,
.brp_max = 64,
.brp_inc = 1,
},
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_LISTENONLY,
/* size of device private data */
.sizeof_dev_private = sizeof(struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBV2_EP_MSGIN_0, IXXAT_USBV2_EP_MSGIN_1,
IXXAT_USBV2_EP_MSGIN_2, IXXAT_USBV2_EP_MSGIN_3,
IXXAT_USBV2_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBV2_EP_MSGOUT_0, IXXAT_USBV2_EP_MSGOUT_1,
IXXAT_USBV2_EP_MSGOUT_2, IXXAT_USBV2_EP_MSGOUT_3,
IXXAT_USBV2_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBV2_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBV2_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbv2_probe,
.dev_get_dev_caps = ixx_usbv2_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbv2_get_ctrl_caps,
.dev_init = ixx_usbv2_init,
.dev_exit = ixx_usbv2_exit,
.dev_set_bittiming = ixx_usbv2_set_bittiming,
.intf_get_info = ixx_usbv2_get_dev_info,
.intf_get_fw_info = ixx_usbv2_get_fwinfo,
.dev_decode_buf = ixx_usbv2_decode_buf,
.dev_encode_msg = ixx_usbv2_encode_msg,
.dev_start = ixx_usbv2_start,
.dev_stop = ixx_usbv2_stop,
};
/*
* describes the USB-to-CAN V2 embedded adapter
*/
struct ixx_usb_adapter usb_to_can_v2_embedded = {
.name = "USB-to-CAN V2 embedded",
.device_id = USB_TO_CAN_V2_EMBEDDED_PRODUCT_ID,
.clock = {
.freq = SJA1000_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ixxat_usb",
.tseg1_min = 1,
.tseg1_max = 16,
.tseg2_min = 1,
.tseg2_max = 8,
.sjw_max = 4,
.brp_min = 1,
.brp_max = 64,
.brp_inc = 1,
},
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_LISTENONLY,
/* size of device private data */
.sizeof_dev_private = sizeof(struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBV2_EP_MSGIN_0, IXXAT_USBV2_EP_MSGIN_1,
IXXAT_USBV2_EP_MSGIN_2, IXXAT_USBV2_EP_MSGIN_3,
IXXAT_USBV2_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBV2_EP_MSGOUT_0, IXXAT_USBV2_EP_MSGOUT_1,
IXXAT_USBV2_EP_MSGOUT_2, IXXAT_USBV2_EP_MSGOUT_3,
IXXAT_USBV2_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBV2_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBV2_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbv2_probe,
.dev_get_dev_caps = ixx_usbv2_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbv2_get_ctrl_caps,
.dev_init = ixx_usbv2_init,
.dev_exit = ixx_usbv2_exit,
.dev_set_bittiming = ixx_usbv2_set_bittiming,
.intf_get_info = ixx_usbv2_get_dev_info,
.intf_get_fw_info = ixx_usbv2_get_fwinfo,
.dev_decode_buf = ixx_usbv2_decode_buf,
.dev_encode_msg = ixx_usbv2_encode_msg,
.dev_start = ixx_usbv2_start,
.dev_stop = ixx_usbv2_stop,
};
/*
* describes the USB-to-CAN V2 professional adapter
*/
struct ixx_usb_adapter usb_to_can_v2_professional = {
.name = "USB-to-CAN V2 professional",
.device_id = USB_TO_CAN_V2_PROFESSIONAL_PRODUCT_ID,
.clock = {
.freq = SJA1000_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ixxat_usb",
.tseg1_min = 1,
.tseg1_max = 16,
.tseg2_min = 1,
.tseg2_max = 8,
.sjw_max = 4,
.brp_min = 1,
.brp_max = 64,
.brp_inc = 1,
},
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_LISTENONLY,
/* size of device private data */
.sizeof_dev_private = sizeof(struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBV2_EP_MSGIN_0, IXXAT_USBV2_EP_MSGIN_1,
IXXAT_USBV2_EP_MSGIN_2, IXXAT_USBV2_EP_MSGIN_3,
IXXAT_USBV2_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBV2_EP_MSGOUT_0, IXXAT_USBV2_EP_MSGOUT_1,
IXXAT_USBV2_EP_MSGOUT_2, IXXAT_USBV2_EP_MSGOUT_3,
IXXAT_USBV2_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBV2_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBV2_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbv2_probe,
.dev_get_dev_caps = ixx_usbv2_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbv2_get_ctrl_caps,
.dev_init = ixx_usbv2_init,
.dev_exit = ixx_usbv2_exit,
.dev_set_bittiming = ixx_usbv2_set_bittiming,
.intf_get_info = ixx_usbv2_get_dev_info,
.intf_get_fw_info = ixx_usbv2_get_fwinfo,
.dev_decode_buf = ixx_usbv2_decode_buf,
.dev_encode_msg = ixx_usbv2_encode_msg,
.dev_start = ixx_usbv2_start,
.dev_stop = ixx_usbv2_stop,
};
/*
* describes the USB-to-CAN V2 low speed adapter
*/
struct ixx_usb_adapter usb_to_can_v2_low_speed = {
.name = "USB-to-CAN V2 low speed",
.device_id = USB_TO_CAN_V2_LOW_SPEED_PRODUCT_ID,
.clock = {
.freq = SJA1000_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ixxat_usb",
.tseg1_min = 1,
.tseg1_max = 16,
.tseg2_min = 1,
.tseg2_max = 8,
.sjw_max = 4,
.brp_min = 1,
.brp_max = 64,
.brp_inc = 1,
},
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_LISTENONLY,
/* size of device private data */
.sizeof_dev_private = sizeof(struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBV2_EP_MSGIN_0, IXXAT_USBV2_EP_MSGIN_1,
IXXAT_USBV2_EP_MSGIN_2, IXXAT_USBV2_EP_MSGIN_3,
IXXAT_USBV2_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBV2_EP_MSGOUT_0, IXXAT_USBV2_EP_MSGOUT_1,
IXXAT_USBV2_EP_MSGOUT_2, IXXAT_USBV2_EP_MSGOUT_3,
IXXAT_USBV2_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBV2_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBV2_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbv2_probe,
.dev_get_dev_caps = ixx_usbv2_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbv2_get_ctrl_caps,
.dev_init = ixx_usbv2_init,
.dev_exit = ixx_usbv2_exit,
.dev_set_bittiming = ixx_usbv2_set_bittiming,
.intf_get_info = ixx_usbv2_get_dev_info,
.intf_get_fw_info = ixx_usbv2_get_fwinfo,
.dev_decode_buf = ixx_usbv2_decode_buf,
.dev_encode_msg = ixx_usbv2_encode_msg,
.dev_start = ixx_usbv2_start,
.dev_stop = ixx_usbv2_stop,
};
/*
* describes the USB-to-CAN V2 extended adapter
*/
struct ixx_usb_adapter usb_to_can_v2_extended = {
.name = "USB-to-CAN V2 extended",
.device_id = USB_TO_CAN_V2_EXTENDED_PRODUCT_ID,
.clock = {
.freq = SJA1000_CRYSTAL_HZ,
},
.bittiming_const = {
.name = "ixxat_usb",
.tseg1_min = 1,
.tseg1_max = 16,
.tseg2_min = 1,
.tseg2_max = 8,
.sjw_max = 4,
.brp_min = 1,
.brp_max = 64,
.brp_inc = 1,
},
.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_BERR_REPORTING |
CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_LISTENONLY,
/* size of device private data */
.sizeof_dev_private = sizeof(struct ixx_usb_device),
/* give here messages in/out endpoints */
.ep_msg_in = { IXXAT_USBV2_EP_MSGIN_0, IXXAT_USBV2_EP_MSGIN_1,
IXXAT_USBV2_EP_MSGIN_2, IXXAT_USBV2_EP_MSGIN_3,
IXXAT_USBV2_EP_MSGIN_4 },
.ep_msg_out = { IXXAT_USBV2_EP_MSGOUT_0, IXXAT_USBV2_EP_MSGOUT_1,
IXXAT_USBV2_EP_MSGOUT_2, IXXAT_USBV2_EP_MSGOUT_3,
IXXAT_USBV2_EP_MSGOUT_4 },
/* size of rx/tx usb buffers */
.rx_buffer_size = IXXAT_USBV2_RX_BUFFER_SIZE,
.tx_buffer_size = IXXAT_USBV2_TX_BUFFER_SIZE,
/* device callbacks */
.intf_probe = ixx_usbv2_probe,
.dev_get_dev_caps = ixx_usbv2_get_dev_caps,
.dev_get_ctrl_caps = ixx_usbv2_get_ctrl_caps,
.dev_init = ixx_usbv2_init,
.dev_exit = ixx_usbv2_exit,
.dev_set_bittiming = ixx_usbv2_set_bittiming,
.intf_get_info = ixx_usbv2_get_dev_info,
.intf_get_fw_info = ixx_usbv2_get_fwinfo,
.dev_decode_buf = ixx_usbv2_decode_buf,
.dev_encode_msg = ixx_usbv2_encode_msg,
.dev_start = ixx_usbv2_start,
.dev_stop = ixx_usbv2_stop,
};
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