0c5139310d
The terminal currently assumes that the transport to the guest always inherits from the Uart class. This assumption breaks when implementing, for example, a VirtIO consoles. This patch removes this assumption by adding pointer to the from the terminal to the uart and replacing it with a more general callback interface. The Uart, or any other class using the terminal, class implements an instance of the callbacks class and registers it with the terminal.
50 lines
2 KiB
C++
50 lines
2 KiB
C++
/*
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* Copyright (c) 2004-2005 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: Ali Saidi
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*/
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/** @file
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* Implements a base class for UARTs
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*/
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#include "dev/platform.hh"
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#include "dev/terminal.hh"
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#include "dev/uart.hh"
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using namespace std;
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Uart::Uart(const Params *p, Addr pio_size)
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: BasicPioDevice(p, pio_size),
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platform(p->platform), term(p->terminal),
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callbackDataAvail(this)
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{
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status = 0;
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// setup terminal callbacks
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term->regDataAvailCallback(&callbackDataAvail);
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}
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