File content as of revision 3:aa88808326b9:

/*
 * Copyright (c) 2019 Tobias Jaster
 *
 * Modified by Zoltan Hudak
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef ENC28J60_EMAC_H_
#define ENC28J60_EMAC_H_

#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include "mbed.h"
#include "EMAC.h"
#include "rtos.h"
#include "enc28j60_reg.h"
#include "enc28j60.h"
#include "enc28j60_emac_config.h"

class ENC28J60_EMAC :
    public EMAC
{
public:
    ENC28J60_EMAC();

    /** Return the ENC28J60 EMAC
     *
     * Returns the default on-board EMAC - this will be target-specific, and
     * may not be available on all targets.
     */
    static ENC28J60_EMAC&   get_instance(void);

    /**
     * Return maximum transmission unit
     *
     * @return     MTU in bytes
     */
    virtual uint32_t        get_mtu_size(void) const;

    /**
     * Gets memory buffer alignment preference
     *
     * Gets preferred memory buffer alignment of the Emac device. IP stack may
     * or may not align link out memory buffer chains using the alignment.
     *
     * @return         Memory alignment requirement in bytes
     */
    virtual uint32_t        get_align_preference(void) const;

    /**
     * Return interface name
     *
     * @param name Pointer to where the name should be written
     * @param size Maximum number of character to copy
     */
    virtual void            get_ifname(char* name, uint8_t size) const;

    /**
     * Returns size of the underlying interface HW address size.
     *
     * @return     HW address size in bytes
     */
    virtual uint8_t         get_hwaddr_size(void) const;

    /**
     * Return interface-supplied HW address
     *
     * Copies HW address to provided memory, @param addr has to be of correct
     * size see @a get_hwaddr_size
     *
     * HW address need not be provided if this interface does not have its own
     * HW address configuration; stack will choose address from central system
     * configuration if the function returns false and does not write to addr.
     *
     * @param addr HW address for underlying interface
     * @return     true if HW address is available
     */
    virtual bool            get_hwaddr(uint8_t* addr) const;

    /**
     * Set HW address for interface
     *
     * Provided address has to be of correct size, see @a get_hwaddr_size
     *
     * Called to set the MAC address to actually use - if @a get_hwaddr is
     * provided the stack would normally use that, but it could be overridden,
     * eg for test purposes.
     *
     * @param addr Address to be set
     */
    virtual void            set_hwaddr(const uint8_t* addr);

    /**
     * Sends the packet over the link
     *
     * That can not be called from an interrupt context.
     *
     * @param buf  Packet to be send
     * @return     True if the packet was send successfully, False otherwise
     */
    virtual bool            link_out(emac_mem_buf_t* buf);

    /**
     * Initializes the HW
     *
     * @return True on success, False in case of an error.
     */
    virtual bool            power_up(void);

    /**
     * Deinitializes the HW
     *
     */
    virtual void            power_down(void);

    /**
     * Sets a callback that needs to be called for packets received for that
     * interface
     *
     * @param input_cb Function to be register as a callback
     */
    virtual void            set_link_input_cb(emac_link_input_cb_t input_cb);

    /**
     * Sets a callback that needs to be called on link status changes for given
     * interface
     *
     * @param state_cb Function to be register as a callback
     */
    virtual void            set_link_state_cb(emac_link_state_change_cb_t state_cb);

    /** Add device to a multicast group
     *
     * @param address  A multicast group hardware address
     */
    virtual void            add_multicast_group(const uint8_t* address);

    /** Remove device from a multicast group
     *
     * @param address  A multicast group hardware address
     */
    virtual void            remove_multicast_group(const uint8_t* address);

    /** Request reception of all multicast packets
     *
     * @param all True to receive all multicasts
     *            False to receive only multicasts addressed to specified groups
     */
    virtual void            set_all_multicast(bool all);

    /** Sets memory manager that is used to handle memory buffers
     *
     * @param mem_mngr Pointer to memory manager
     */
    virtual void            set_memory_manager(EMACMemoryManager& mem_mngr);
private:
    void                        link_status_task();
    void                        receive_task();
    bool                        low_level_init_successful();
    emac_mem_buf_t*             low_level_input();

    ENC28J60*                   _enc28j60;
    bool                        _prev_link_status_up;
    int                         _link_status_task_handle;
    int                         _receive_task_handle;
    EMACMemoryManager*          _memory_manager;
    Mutex                       _ethLockMutex;
    uint8_t                     _hwaddr[ENC28J60_HWADDR_SIZE];

    emac_link_input_cb_t        _emac_link_input_cb;
    emac_link_state_change_cb_t _emac_link_state_cb;
};
#endif /* ENC28J60_EMAC_H_ */