XvcConnection.h

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#ifndef __ROGUE_PROTOCOLS_XILINX_XVC_CONNECTION_H__
#define __ROGUE_PROTOCOLS_XILINX_XVC_CONNECTION_H__
#include "rogue/Directives.h"
 
#include <netinet/in.h>
#include <sys/socket.h>
 
#include <cstdint>
#include <vector>
 
#include "rogue/GeneralError.h"
#include "rogue/protocols/xilinx/JtagDriver.h"
 
namespace rogue {
namespace protocols {
namespace xilinx {
class XvcConnection {
    int sd_;
    int wakeFd_;  // shutdown self-pipe (read end); owned by Xvc. -1 disables wake path.
    JtagDriver* drv_;
    struct sockaddr_in peer_{};
 
    // just use vectors to back raw memory; DONT use 'size/resize'
    // (unfortunately 'resize' fills elements beyond the current 'size'
    // with zeroes)
 
    uint8_t* rp_ = nullptr;
    std::vector<uint8_t> rxb_;
    uint64_t rl_ = 0;
    uint64_t tl_ = 0;
 
    std::vector<uint8_t> txb_;
    uint64_t maxVecLen_;
    uint64_t supVecLen_;
    uint64_t chunk_ = 0;
    int lastErrno_ = 0;
 
  public:
    XvcConnection(int sd, int wakeFd, JtagDriver* drv, uint64_t maxVecLen = 32768);
 
    virtual void fill(uint64_t n);
 
    virtual void flush();
 
    virtual void bump(uint64_t n);
 
    virtual void allocBufs();
 
    virtual void run();
 
    ssize_t readTo(void* buf, size_t count);
 
    int lastErrno() const { return lastErrno_; }
 
    virtual ~XvcConnection();
};
}  // namespace xilinx
}  // namespace protocols
}  // namespace rogue
 
#endif