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