/* SPDX-License-Identifier: GPL-2.0-only */
/* CAN driver for PEAK System micro-CAN based adapters
 *
 * Copyright (C) 2003-2025 PEAK System-Technik GmbH
 * Author: Stéphane Grosjean <stephane.grosjean@hms-networks.com>
 */
#ifndef PEAK_CANFD_USER_H
#define PEAK_CANFD_USER_H

#include <linux/can/dev/peak_canfd.h>

#define PCANFD_ECHO_SKB_DEF             -1

/* data structure private to each uCAN interface */
struct peak_canfd_priv {
        struct can_priv can;            /* socket-can private data */
        struct net_device *ndev;        /* network device */
        int index;                      /* channel index */

        struct can_berr_counter bec;    /* rx/tx err counters */

        int echo_idx;                   /* echo skb free slot index */
        spinlock_t echo_lock;

        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 net_device *alloc_peak_canfd_dev(int sizeof_priv, int index,
                                        int echo_skb_max);
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