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Diffstat (limited to 'src/dev/x86/speaker.hh')
-rw-r--r-- | src/dev/x86/speaker.hh | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/dev/x86/speaker.hh b/src/dev/x86/speaker.hh new file mode 100644 index 000000000..7d28d6cf7 --- /dev/null +++ b/src/dev/x86/speaker.hh @@ -0,0 +1,79 @@ +/* + * 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. + * + * Authors: Gabe Black + */ + +#ifndef __DEV_X86_SPEAKER_HH__ +#define __DEV_X86_SPEAKER_HH__ + +#include "base/bitunion.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: + typedef PcSpeakerParams Params; + + const Params * + params() const + { + return dynamic_cast<const Params *>(_params); + } + + Speaker(Params *p) : BasicPioDevice(p), + latency(p->pio_latency), timer(p->i8254) + { + pioSize = 1; + } + + Tick read(PacketPtr pkt); + + Tick write(PacketPtr pkt); +}; + +}; // namespace X86ISA + +#endif //__DEV_X86_SPEAKER_HH__ |