| /* |
| * Copyright (c) 2008 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. |
| */ |
| |
| #ifndef __DEV_X86_SPEAKER_HH__ |
| #define __DEV_X86_SPEAKER_HH__ |
| |
| #include "base/bitunion.hh" |
| #include "dev/io_device.hh" |
| #include "params/PcSpeaker.hh" |
| |
| namespace X86ISA |
| { |
| |
| class I8254; |
| |
| class Speaker : public BasicPioDevice |
| { |
| protected: |
| Tick latency; |
| |
| BitUnion8(SpeakerControl) |
| Bitfield<0> gate; |
| Bitfield<1> speaker; |
| Bitfield<5> timer; |
| EndBitUnion(SpeakerControl) |
| |
| SpeakerControl controlVal; |
| |
| I8254 * timer; |
| |
| public: |
| using Params = PcSpeakerParams; |
| |
| Speaker(const Params &p) : BasicPioDevice(p, 1), |
| latency(p.pio_latency), controlVal(0), timer(p.i8254) |
| { |
| } |
| |
| Tick read(PacketPtr pkt) override; |
| |
| Tick write(PacketPtr pkt) override; |
| |
| void serialize(CheckpointOut &cp) const override; |
| void unserialize(CheckpointIn &cp) override; |
| }; |
| |
| } // namespace X86ISA |
| |
| #endif //__DEV_X86_SPEAKER_HH__ |