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/*
* Copyright (c) 2001-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
* Ali Saidi
*/
/* @file
* User Terminal Interface
*/
#ifndef __DEV_TERMINAL_HH__
#define __DEV_TERMINAL_HH__
#include <iostream>
#include "base/callback.hh"
#include "base/circlebuf.hh"
#include "base/pollevent.hh"
#include "base/socket.hh"
#include "cpu/intr_control.hh"
#include "dev/serial/serial.hh"
#include "params/Terminal.hh"
#include "sim/sim_object.hh"
class OutputStream;
class TerminalListener;
class Terminal : public SerialDevice
{
protected:
class ListenEvent : public PollEvent
{
protected:
Terminal *term;
public:
ListenEvent(Terminal *t, int fd, int e);
void process(int revent);
};
friend class ListenEvent;
ListenEvent *listenEvent;
class DataEvent : public PollEvent
{
protected:
Terminal *term;
public:
DataEvent(Terminal *t, int fd, int e);
void process(int revent);
};
friend class DataEvent;
DataEvent *dataEvent;
protected:
int number;
int data_fd;
public:
typedef TerminalParams Params;
Terminal(const Params *p);
~Terminal();
protected:
ListenSocket listener;
void listen(int port);
void accept();
protected:
CircleBuf<char> txbuf;
CircleBuf<char> rxbuf;
OutputStream *outfile;
#if TRACING_ON == 1
CircleBuf<char> linebuf;
#endif
public:
///////////////////////
// Terminal Interface
void data();
void read(uint8_t &c) { read(&c, 1); }
size_t read(uint8_t *buf, size_t len);
void write(uint8_t c) { write(&c, 1); }
size_t write(const uint8_t *buf, size_t len);
void detach();
public: // SerialDevice interface
uint8_t readData() override;
void writeData(uint8_t c) override;
bool dataAvailable() const override { return !rxbuf.empty(); }
public:
/////////////////
// OS interface
// get a character from the terminal in the console specific format
// corresponds to GETC:
// retval<63:61>
// 000: success: character received
// 001: success: character received, more pending
// 100: failure: no character ready
// 110: failure: character received with error
// 111: failure: character received with error, more pending
// retval<31:0>
// character read from console
//
// Interrupts are cleared when the buffer is empty.
uint64_t console_in();
};
#endif // __DEV_TERMINAL_HH__
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