gem5  v20.1.0.0
speaker.hh
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28 
29 #ifndef __DEV_X86_SPEAKER_HH__
30 #define __DEV_X86_SPEAKER_HH__
31 
32 #include "base/bitunion.hh"
33 #include "dev/io_device.hh"
34 #include "params/PcSpeaker.hh"
35 
36 namespace X86ISA
37 {
38 
39 class I8254;
40 
41 class Speaker : public BasicPioDevice
42 {
43  protected:
45 
46  BitUnion8(SpeakerControl)
47  Bitfield<0> gate;
48  Bitfield<1> speaker;
49  Bitfield<5> timer;
50  EndBitUnion(SpeakerControl)
51 
52  SpeakerControl controlVal;
53 
55 
56  public:
57  typedef PcSpeakerParams Params;
58 
59  const Params *
60  params() const
61  {
62  return dynamic_cast<const Params *>(_params);
63  }
64 
66  latency(p->pio_latency), controlVal(0), timer(p->i8254)
67  {
68  }
69 
70  Tick read(PacketPtr pkt) override;
71 
72  Tick write(PacketPtr pkt) override;
73 
74  void serialize(CheckpointOut &cp) const override;
75  void unserialize(CheckpointIn &cp) override;
76 };
77 
78 } // namespace X86ISA
79 
80 #endif //__DEV_X86_SPEAKER_HH__
io_device.hh
X86ISA::Speaker::params
const Params * params() const
Definition: speaker.hh:60
X86ISA::Speaker::BitUnion8
BitUnion8(SpeakerControl) Bitfield< 0 > gate
X86ISA::Speaker::latency
Tick latency
Definition: speaker.hh:44
Tick
uint64_t Tick
Tick count type.
Definition: types.hh:63
X86ISA::Speaker::Speaker
Speaker(Params *p)
Definition: speaker.hh:65
X86ISA::I8254
Definition: i8254.hh:40
cp
Definition: cprintf.cc:40
X86ISA::Speaker::read
Tick read(PacketPtr pkt) override
Pure virtual function that the device must implement.
Definition: speaker.cc:39
X86ISA::Speaker::timer
I8254 * timer
Definition: speaker.hh:54
bitunion.hh
X86ISA::Speaker::EndBitUnion
EndBitUnion(SpeakerControl) SpeakerControl controlVal
PioDevice::Params
PioDeviceParams Params
Definition: io_device.hh:131
X86ISA
This is exposed globally, independent of the ISA.
Definition: acpi.hh:55
X86ISA::Speaker::Params
PcSpeakerParams Params
Definition: speaker.hh:57
X86ISA::p
Bitfield< 0 > p
Definition: pagetable.hh:151
SimObject::_params
const SimObjectParams * _params
Cached copy of the object parameters.
Definition: sim_object.hh:110
Packet
A Packet is used to encapsulate a transfer between two objects in the memory system (e....
Definition: packet.hh:257
BasicPioDevice
Definition: io_device.hh:150
X86ISA::Speaker::unserialize
void unserialize(CheckpointIn &cp) override
Unserialize an object.
Definition: speaker.cc:82
X86ISA::Speaker::serialize
void serialize(CheckpointOut &cp) const override
Serialize an object.
Definition: speaker.cc:76
X86ISA::Speaker
Definition: speaker.hh:41
CheckpointOut
std::ostream CheckpointOut
Definition: serialize.hh:63
X86ISA::Speaker::timer
Bitfield< 5 > timer
Definition: speaker.hh:49
CheckpointIn
Definition: serialize.hh:67
X86ISA::Speaker::write
Tick write(PacketPtr pkt) override
Pure virtual function that the device must implement.
Definition: speaker.cc:55
X86ISA::Speaker::speaker
Bitfield< 1 > speaker
Definition: speaker.hh:48

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