1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * CAN driver for PEAK System micro-CAN based adapters
4  *
5  * Copyright (C) 2003-2011 PEAK System-Technik GmbH
6  * Copyright (C) 2011-2013 Stephane Grosjean <s.grosjean@peak-system.com>
7  */
8 #ifndef PEAK_CANFD_USER_H
9 #define PEAK_CANFD_USER_H
10 
11 #include <linux/can/dev/peak_canfd.h>
12 
13 #define PCANFD_ECHO_SKB_DEF		-1
14 
15 /* data structure private to each uCAN interface */
16 struct peak_canfd_priv {
17 	struct can_priv can;		/* socket-can private data */
18 	struct net_device *ndev;	/* network device */
19 	int index;			/* channel index */
20 
21 	struct can_berr_counter bec;	/* rx/tx err counters */
22 
23 	int echo_idx;			/* echo skb free slot index */
24 	spinlock_t echo_lock;
25 
26 	int cmd_len;
27 	void *cmd_buffer;
28 	int cmd_maxlen;
29 
30 	int (*pre_cmd)(struct peak_canfd_priv *priv);
31 	int (*write_cmd)(struct peak_canfd_priv *priv);
32 	int (*post_cmd)(struct peak_canfd_priv *priv);
33 
34 	int (*enable_tx_path)(struct peak_canfd_priv *priv);
35 	void *(*alloc_tx_msg)(struct peak_canfd_priv *priv, u16 msg_size,
36 			      int *room_left);
37 	int (*write_tx_msg)(struct peak_canfd_priv *priv,
38 			    struct pucan_tx_msg *msg);
39 };
40 
41 struct net_device *alloc_peak_canfd_dev(int sizeof_priv, int index,
42 					int echo_skb_max);
43 int peak_canfd_handle_msg(struct peak_canfd_priv *priv,
44 			  struct pucan_rx_msg *msg);
45 int peak_canfd_handle_msgs_list(struct peak_canfd_priv *priv,
46 				struct pucan_rx_msg *rx_msg, int rx_count);
47 #endif
48