speaker.hh revision 5826:e0d0e58cfd8d 
110512SAli.Saidi@ARM.com/*
210512SAli.Saidi@ARM.com * Copyright (c) 2008 The Regents of The University of Michigan
310512SAli.Saidi@ARM.com * All rights reserved.
410512SAli.Saidi@ARM.com *
510512SAli.Saidi@ARM.com * Redistribution and use in source and binary forms, with or without
610512SAli.Saidi@ARM.com * modification, are permitted provided that the following conditions are
710512SAli.Saidi@ARM.com * met: redistributions of source code must retain the above copyright
810512SAli.Saidi@ARM.com * notice, this list of conditions and the following disclaimer;
910512SAli.Saidi@ARM.com * redistributions in binary form must reproduce the above copyright
1010512SAli.Saidi@ARM.com * notice, this list of conditions and the following disclaimer in the
1110512SAli.Saidi@ARM.com * documentation and/or other materials provided with the distribution;
1210512SAli.Saidi@ARM.com * neither the name of the copyright holders nor the names of its
1310512SAli.Saidi@ARM.com * contributors may be used to endorse or promote products derived from
1410512SAli.Saidi@ARM.com * this software without specific prior written permission.
1510512SAli.Saidi@ARM.com *
1610512SAli.Saidi@ARM.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1710512SAli.Saidi@ARM.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1810512SAli.Saidi@ARM.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1910512SAli.Saidi@ARM.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
2010512SAli.Saidi@ARM.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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2510512SAli.Saidi@ARM.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
2610512SAli.Saidi@ARM.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2710512SAli.Saidi@ARM.com *
2810512SAli.Saidi@ARM.com * Authors: Gabe Black
2910512SAli.Saidi@ARM.com */
3010512SAli.Saidi@ARM.com
3110512SAli.Saidi@ARM.com#ifndef __DEV_X86_SPEAKER_HH__
3210512SAli.Saidi@ARM.com#define __DEV_X86_SPEAKER_HH__
3310512SAli.Saidi@ARM.com
3410512SAli.Saidi@ARM.com#include "base/bitunion.hh"
3510512SAli.Saidi@ARM.com#include "params/PcSpeaker.hh"
3610512SAli.Saidi@ARM.com
3710512SAli.Saidi@ARM.comnamespace X86ISA
3810512SAli.Saidi@ARM.com{
3910512SAli.Saidi@ARM.com
4010512SAli.Saidi@ARM.comclass I8254;
4110512SAli.Saidi@ARM.com
4210512SAli.Saidi@ARM.comclass Speaker : public BasicPioDevice
4311837Swendy.elsasser@arm.com{
4410512SAli.Saidi@ARM.com  protected:
4510512SAli.Saidi@ARM.com    Tick latency;
46
47    BitUnion8(SpeakerControl)
48        Bitfield<0> gate;
49        Bitfield<1> speaker;
50        Bitfield<5> timer;
51    EndBitUnion(SpeakerControl)
52
53    SpeakerControl controlVal;
54
55    I8254 * timer;
56
57  public:
58    typedef PcSpeakerParams Params;
59
60    const Params *
61    params() const
62    {
63        return dynamic_cast<const Params *>(_params);
64    }
65
66    Speaker(Params *p) : BasicPioDevice(p),
67        latency(p->pio_latency), controlVal(0), timer(p->i8254)
68    {
69        pioSize = 1;
70    }
71
72    Tick read(PacketPtr pkt);
73
74    Tick write(PacketPtr pkt);
75};
76
77}; // namespace X86ISA
78
79#endif //__DEV_X86_SPEAKER_HH__
80