62e05ed78a
Add checkpointing capability to the Intel 8254 timer, CMOS, I8042, PS2 Keyboard and Mouse, I82094AA, I8237, I8254, I8259, and speaker devices
83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
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* Copyright (c) 2008 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: Gabe Black
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*/
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#ifndef __DEV_X86_SPEAKER_HH__
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#define __DEV_X86_SPEAKER_HH__
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#include "base/bitunion.hh"
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#include "params/PcSpeaker.hh"
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namespace X86ISA
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{
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class I8254;
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class Speaker : public BasicPioDevice
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{
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protected:
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Tick latency;
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BitUnion8(SpeakerControl)
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Bitfield<0> gate;
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Bitfield<1> speaker;
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Bitfield<5> timer;
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EndBitUnion(SpeakerControl)
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SpeakerControl controlVal;
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I8254 * timer;
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public:
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typedef PcSpeakerParams Params;
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const Params *
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params() const
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{
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return dynamic_cast<const Params *>(_params);
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}
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Speaker(Params *p) : BasicPioDevice(p),
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latency(p->pio_latency), controlVal(0), timer(p->i8254)
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{
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pioSize = 1;
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}
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Tick read(PacketPtr pkt);
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Tick write(PacketPtr pkt);
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virtual void serialize(std::ostream &os);
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virtual void unserialize(Checkpoint *cp, const std::string §ion);
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};
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} // namespace X86ISA
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#endif //__DEV_X86_SPEAKER_HH__
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