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[/] [openrisc/] [trunk/] [orpsocv2/] [bench/] [sysc/] [include/] [RspConnection.h] - Rev 668
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// ---------------------------------------------------------------------------- // Remote Serial Protocol connection: definition // Copyright (C) 2008 Embecosm Limited <info@embecosm.com> // Contributor Jeremy Bennett <jeremy.bennett@embecosm.com> // This file is part of the cycle accurate model of the OpenRISC 1000 based // system-on-chip, ORPSoC, built using Verilator. // This program is free software: you can redistribute it and/or modify it // under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or (at your // option) any later version. // This program is distributed in the hope that it will be useful, but WITHOUT // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public // License for more details. // You should have received a copy of the GNU Lesser General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. // ---------------------------------------------------------------------------- // $Id: RspConnection.h 326 2009-03-07 16:47:31Z jeremy $ #ifndef RSP_CONNECTION__H #define RSP_CONNECTION__H #include "RspPacket.h" //! The default service to use if port number = 0 and no service specified #define DEFAULT_RSP_SERVICE "or1ksim-rsp" //----------------------------------------------------------------------------- //! Class implementing the RSP connection listener //! RSP requests received from TCP/IP are queued on the output FIFO for //! processing by the GDB server. Packets read from the input FIFO from the //! GDB server are sent back via TCP/IP. //! The packets are received serially, ie. a new packet is not sent until the //! previous ones have been dealt with. Some packets need no reply, so they //! will be sent one after the other. But for packets that need a reply (which //! may be one or several packets), new packets are not sent until the reply //! from the previous one is received. //! The upshot of this is that we can avoid any risk of deadlock by always //! giving priority to any outgoing reply packets. //! Two threads are used, one to listen for TCP/IP connections from the //! client, the other to look for FIFO packets from the GDB server to write //! back to the client. Both must be non-blocking in the SystemC sense //! (i.e. allow other SystemC threads to run). //----------------------------------------------------------------------------- class RspConnection { public: // Constructors and destructor RspConnection(int _portNum); RspConnection(const char *_serviceName = DEFAULT_RSP_SERVICE); ~RspConnection(); // Public interface: manage client connections bool rspConnect(); void rspClose(); bool isConnected(); char rspSocketPeek(); // Public interface: get packets from the stream and put them out bool getPkt(RspPacket * pkt); bool putPkt(RspPacket * pkt); int getRspChar(); private: // Generic initializer void rspInit(int _portNum, const char *_serviceName); // Internal routines to handle individual chars bool putRspChar(char c); //int getRspChar (); //! The port number to listen on int portNum; //! The service name to listen on const char *serviceName; //! The client file descriptor int clientFd; }; // RspConnection () #endif // RSP_CONNECTION__H
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