drivers/net/can/peak_canfd/peak_canfd_user.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   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 #ifndef PEAK_CANFD_USER_H
   8 #define PEAK_CANFD_USER_H
   9
  10 #include <linux/can/dev/peak_canfd.h>
  11
  12 #define PCANFD_ECHO_SKB_DEF             -1
  13
  14 /* data structure private to each uCAN interface */
  15 struct peak_canfd_priv {
  16         struct can_priv can;            /* socket-can private data */
  17         struct net_device *ndev;        /* network device */
  18         int index;                      /* channel index */
  19
  20         struct can_berr_counter bec;    /* rx/tx err counters */
  21
  22         int echo_idx;                   /* echo skb free slot index */
  23         spinlock_t echo_lock;
  24
  25         int cmd_len;
  26         void *cmd_buffer;
  27         int cmd_maxlen;
  28
  29         int (*pre_cmd)(struct peak_canfd_priv *priv);
  30         int (*write_cmd)(struct peak_canfd_priv *priv);
  31         int (*post_cmd)(struct peak_canfd_priv *priv);
  32
  33         int (*enable_tx_path)(struct peak_canfd_priv *priv);
  34         void *(*alloc_tx_msg)(struct peak_canfd_priv *priv, u16 msg_size,
  35                               int *room_left);
  36         int (*write_tx_msg)(struct peak_canfd_priv *priv,
  37                             struct pucan_tx_msg *msg);
  38 };
  39
  40 struct net_device *alloc_peak_canfd_dev(int sizeof_priv, int index,
  41                                         int echo_skb_max);
  42 int peak_canfd_handle_msg(struct peak_canfd_priv *priv,
  43                           struct pucan_rx_msg *msg);
  44 int peak_canfd_handle_msgs_list(struct peak_canfd_priv *priv,
  45                                 struct pucan_rx_msg *rx_msg, int rx_count);
  46 #endif