Subversion Repositories riscv_vhdl

/**
 * @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__