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Diffstat (limited to 'src/dev/simconsole.hh')
| -rw-r--r-- | src/dev/simconsole.hh | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/dev/simconsole.hh b/src/dev/simconsole.hh new file mode 100644 index 000000000..cf0641f9e --- /dev/null +++ b/src/dev/simconsole.hh @@ -0,0 +1,165 @@ +/* + * 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. + */ + +/* @file + * User Console Interface + */ + +#ifndef __CONSOLE_HH__ +#define __CONSOLE_HH__ + +#include <iostream> + +#include "base/circlebuf.hh" +#include "cpu/intr_control.hh" +#include "base/pollevent.hh" +#include "base/socket.hh" +#include "sim/sim_object.hh" + +class ConsoleListener; +class Uart; + +class SimConsole : public SimObject +{ + public: + Uart *uart; + + protected: + class Event : public PollEvent + { + protected: + SimConsole *cons; + + public: + Event(SimConsole *c, int fd, int e); + void process(int revent); + }; + + friend class Event; + Event *event; + + protected: + int number; + int in_fd; + int out_fd; + ConsoleListener *listener; + + public: + SimConsole(const std::string &name, std::ostream *os, int num); + ~SimConsole(); + + protected: + CircleBuf txbuf; + CircleBuf rxbuf; + std::ostream *outfile; +#if TRACING_ON == 1 + CircleBuf linebuf; +#endif + + public: + /////////////////////// + // Terminal Interface + + void attach(int fd, ConsoleListener *l = NULL) { attach(fd, fd, l); } + void attach(int in, int out, ConsoleListener *l = NULL); + void detach(); + + void data(); + + void close(); + 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); + + public: + ///////////////// + // OS interface + + // Get a character from the console. + bool in(uint8_t &value); + + // get a character from the console 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(); + + // Send a character to the console + void out(char c); + + //Ask the console if data is available + bool dataAvailable() { return !rxbuf.empty(); } + + virtual void serialize(std::ostream &os); + virtual void unserialize(Checkpoint *cp, const std::string §ion); +}; + +class ConsoleListener : public SimObject +{ + protected: + class Event : public PollEvent + { + protected: + ConsoleListener *listener; + + public: + Event(ConsoleListener *l, int fd, int e) + : PollEvent(fd, e), listener(l) {} + void process(int revent); + }; + + friend class Event; + Event *event; + + typedef std::list<SimConsole *> list_t; + typedef list_t::iterator iter_t; + list_t ConsoleList; + + protected: + ListenSocket listener; + + public: + ConsoleListener(const std::string &name); + ~ConsoleListener(); + + void add(SimConsole *cons); + + void accept(); + void listen(int port); +}; + +#endif // __CONSOLE_HH__ |