rtcan_peak_canfd_user.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * CAN driver for PEAK System micro-CAN based adapters.
 *
 * Copyright (C) 2001-2021 PEAK System-Technik GmbH
 * Copyright (C) 2019-2021 Stephane Grosjean <s.grosjean@peak-system.com>
 */
#ifndef PEAK_CANFD_USER_H
#define PEAK_CANFD_USER_H
 
#include <linux/can/dev/peak_canfd.h>
 
#define CAN_MAX_DLC             8
#define get_can_dlc(i)          (min_t(__u8, (i), CAN_MAX_DLC))
 
struct peak_berr_counter {
        __u16 txerr;
        __u16 rxerr;
};
 
/* data structure private to each uCAN interface */
struct peak_canfd_priv {
        struct rtcan_device *rdev;      /* RTCAN device */
        int index;                      /* channel index */
 
        struct peak_berr_counter bec;
 
        int cmd_len;
        void *cmd_buffer;
        int cmd_maxlen;
 
        int (*pre_cmd)(struct peak_canfd_priv *priv);
        int (*write_cmd)(struct peak_canfd_priv *priv);
        int (*post_cmd)(struct peak_canfd_priv *priv);
 
        int (*enable_tx_path)(struct peak_canfd_priv *priv);
        void *(*alloc_tx_msg)(struct peak_canfd_priv *priv, u16 msg_size,
                              int *room_left);
        int (*write_tx_msg)(struct peak_canfd_priv *priv,
                            struct pucan_tx_msg *msg);
};
 
struct rtcan_device *alloc_peak_canfd_dev(int sizeof_priv, int index);
void rtcan_peak_pciefd_remove_proc(struct rtcan_device *rdev);
int rtcan_peak_pciefd_create_proc(struct rtcan_device *rdev);
 
int peak_canfd_handle_msg(struct peak_canfd_priv *priv,
                          struct pucan_rx_msg *msg);
int peak_canfd_handle_msgs_list(struct peak_canfd_priv *priv,
                                struct pucan_rx_msg *rx_msg, int rx_count);
#endif