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/*
* Copyright (c) 2004-2005 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: Ali Saidi
*/
/** @file
* Base class for UART
*/
#ifndef __UART_HH__
#define __UART_HH__
#include "base/callback.hh"
#include "dev/io_device.hh"
#include "dev/serial/serial.hh"
#include "params/Uart.hh"
class Platform;
const int RX_INT = 0x1;
const int TX_INT = 0x2;
class Uart : public BasicPioDevice
{
protected:
int status;
Platform *platform;
SerialDevice *device;
public:
typedef UartParams Params;
Uart(const Params *p, Addr pio_size);
const Params *
params() const
{
return dynamic_cast<const Params *>(_params);
}
/**
* Inform the uart that there is data available.
*/
virtual void dataAvailable() = 0;
/**
* Return if we have an interrupt pending
* @return interrupt status
*/
bool intStatus() { return status ? true : false; }
protected:
MakeCallback<Uart, &Uart::dataAvailable> callbackDataAvail;
};
#endif // __UART_HH__
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