drivers/net/can/peak_canfd/peak_canfd_user.h

   1 /*
   2  * CAN driver for PEAK System micro-CAN based adapters
   3  *
   4  * Copyright (C) 2003-2011 PEAK System-Technik GmbH
   5  * Copyright (C) 2011-2013 Stephane Grosjean <s.grosjean@peak-system.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  * General Public License for more details.
  15  */
  16 #ifndef PEAK_CANFD_USER_H
  17 #define PEAK_CANFD_USER_H
  18
  19 #include <linux/can/dev/peak_canfd.h>
  20
  21 #define PCANFD_ECHO_SKB_DEF             -1
  22
  23 /* data structure private to each uCAN interface */
  24 struct peak_canfd_priv {
  25         struct can_priv can;            /* socket-can private data */
  26         struct net_device *ndev;        /* network device */
  27         int index;                      /* channel index */
  28
  29         struct can_berr_counter bec;    /* rx/tx err counters */
  30
  31         int echo_idx;                   /* echo skb free slot index */
  32         spinlock_t echo_lock;
  33
  34         int cmd_len;
  35         void *cmd_buffer;
  36         int cmd_maxlen;
  37
  38         int (*pre_cmd)(struct peak_canfd_priv *priv);
  39         int (*write_cmd)(struct peak_canfd_priv *priv);
  40         int (*post_cmd)(struct peak_canfd_priv *priv);
  41
  42         int (*enable_tx_path)(struct peak_canfd_priv *priv);
  43         void *(*alloc_tx_msg)(struct peak_canfd_priv *priv, u16 msg_size,
  44                               int *room_left);
  45         int (*write_tx_msg)(struct peak_canfd_priv *priv,
  46                             struct pucan_tx_msg *msg);
  47 };
  48
  49 struct net_device *alloc_peak_canfd_dev(int sizeof_priv, int index,
  50                                         int echo_skb_max);
  51 int peak_canfd_handle_msg(struct peak_canfd_priv *priv,
  52                           struct pucan_rx_msg *msg);
  53 int peak_canfd_handle_msgs_list(struct peak_canfd_priv *priv,
  54                                 struct pucan_rx_msg *rx_msg, int rx_count);
  55 #endif