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/**

 * @file

 * @copyright  Copyright 2016 GNSS Sensor Ltd. All right reserved.

 * @author     Sergey Khabarov - sergeykhbr@gmail.com

 * @brief      Ethernet MAC device functional model.

 */

#ifndef __DEBUGGER_COMMON_DEBUG_GRETH_H__

#define __DEBUGGER_COMMON_DEBUG_GRETH_H__

#include <iclass.h>

#include <iservice.h>

#include "coreservices/ithread.h"

#include "coreservices/iclock.h"

#include "coreservices/imemop.h"

#include "coreservices/ilink.h"

#include "coreservices/irawlistener.h"

namespace debugger {

struct greth_map {

    uint32_t rsrv1;

    uint64_t rsrv[2];

};

struct EdclControlRequestType {

    // 32 bits fields:

    uint32_t unused : 7;

    uint32_t len    : 10;

    uint32_t write  : 1;    // read = 0; write = 1

    uint32_t seqidx : 14;   // sequence id

    /* uint32 data; */      // 0 to 242 words

};

struct EdclControlResponseType {

    // 32 bits fields:

    uint32_t unused : 7;

    uint32_t len    : 10;

    uint32_t nak    : 1;    // ACK = 0; NAK = 1

    uint32_t seqidx : 14;   // sequence id

    /* uint32 data; */      // 0 to 242 words

};

#pragma pack(1)

struct UdpEdclCommonType {

    uint16_t offset;

    union ControlType {

        uint32_t word;

        EdclControlRequestType request;

        EdclControlResponseType response;

    } control;

    uint32_t address;

    /* uint32 data; */      // 0 to 242 words

};

#pragma pack()

class Greth : public IService,

              public IThread,

              public IMemoryOperation,

              public IAxi4NbResponse {

 public:

    explicit Greth(const char *name);

    virtual ~Greth();

    /** IService interface */

    virtual void postinitService();

    /** IMemoryOperation */

    virtual ETransStatus b_transport(Axi4TransactionType *trans);

    /** IAxi4NbResponse */

    virtual void nb_response(Axi4TransactionType *trans);

 protected:

    /** IThread interface */

    virtual void busyLoop();

 private:

    void write32(uint8_t *buf, uint32_t v);

    uint32_t read32(uint8_t *buf);

    void sendNAK(UdpEdclCommonType *req);

 private:

    AttributeType ip_;

    AttributeType mac_;

    AttributeType bus_;

    AttributeType transport_;

    AttributeType sysBusMasterID_;

    IMemoryOperation *ibus_;

    IClock *iclk0_;

    ILink *itransport_;

    uint8_t rxbuf_[1<<12];

    uint8_t txbuf_[1<<12];

    uint32_t seq_cnt_ : 14;

    Axi4TransactionType trans_;

    event_def event_tap_;

    greth_map regs_;

};

DECLARE_CLASS(Greth)

}  // namespace debugger

#endif  // __DEBUGGER_COMMON_DEBUG_GRETH_H__