gem5  v21.2.1.1
speaker.hh
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2008 The Regents of The University of Michigan
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are
7  * met: redistributions of source code must retain the above copyright
8  * notice, this list of conditions and the following disclaimer;
9  * redistributions in binary form must reproduce the above copyright
10  * notice, this list of conditions and the following disclaimer in the
11  * documentation and/or other materials provided with the distribution;
12  * neither the name of the copyright holders nor the names of its
13  * contributors may be used to endorse or promote products derived from
14  * this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
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 gem5
37 {
38 
39 namespace X86ISA
40 {
41 
42 class I8254;
43 
44 class Speaker : public BasicPioDevice
45 {
46  protected:
48 
49  BitUnion8(SpeakerControl)
50  Bitfield<0> gate;
51  Bitfield<1> speaker;
52  Bitfield<5> timer;
53  EndBitUnion(SpeakerControl)
54 
55  SpeakerControl controlVal;
56 
58 
59  public:
60  using Params = PcSpeakerParams;
61 
62  Speaker(const Params &p) : BasicPioDevice(p, 1),
63  latency(p.pio_latency), controlVal(0), timer(p.i8254)
64  {
65  }
66 
67  Tick read(PacketPtr pkt) override;
68 
69  Tick write(PacketPtr pkt) override;
70 
71  void serialize(CheckpointOut &cp) const override;
72  void unserialize(CheckpointIn &cp) override;
73 };
74 
75 } // namespace X86ISA
76 } // namespace gem5
77 
78 #endif //__DEV_X86_SPEAKER_HH__
gem5::X86ISA::Speaker::Speaker
Speaker(const Params &p)
Definition: speaker.hh:62
io_device.hh
gem5::X86ISA::Speaker::speaker
Bitfield< 1 > speaker
Definition: speaker.hh:51
gem5::X86ISA::Speaker::EndBitUnion
EndBitUnion(SpeakerControl) SpeakerControl controlVal
gem5::CheckpointIn
Definition: serialize.hh:68
gem5::X86ISA::Speaker
Definition: speaker.hh:44
gem5::X86ISA::Speaker::latency
Tick latency
Definition: speaker.hh:47
gem5::X86ISA::Speaker::BitUnion8
BitUnion8(SpeakerControl) Bitfield< 0 > gate
gem5::X86ISA::Speaker::serialize
void serialize(CheckpointOut &cp) const override
Serialize an object.
Definition: speaker.cc:79
gem5::PioDevice::Params
PioDeviceParams Params
Definition: io_device.hh:134
gem5::X86ISA::Speaker::timer
Bitfield< 5 > timer
Definition: speaker.hh:52
gem5::Packet
A Packet is used to encapsulate a transfer between two objects in the memory system (e....
Definition: packet.hh:283
gem5::Tick
uint64_t Tick
Tick count type.
Definition: types.hh:58
bitunion.hh
gem5::X86ISA::Speaker::read
Tick read(PacketPtr pkt) override
Pure virtual function that the device must implement.
Definition: speaker.cc:42
gem5::X86ISA::Speaker::write
Tick write(PacketPtr pkt) override
Pure virtual function that the device must implement.
Definition: speaker.cc:58
gem5::X86ISA::Speaker::timer
I8254 * timer
Definition: speaker.hh:57
gem5::X86ISA::Speaker::unserialize
void unserialize(CheckpointIn &cp) override
Unserialize an object.
Definition: speaker.cc:85
gem5::X86ISA::p
Bitfield< 0 > p
Definition: pagetable.hh:151
gem5::CheckpointOut
std::ostream CheckpointOut
Definition: serialize.hh:66
gem5::X86ISA::I8254
Definition: i8254.hh:43
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: tlb.cc:60
gem5::BasicPioDevice
Definition: io_device.hh:147

Generated on Wed May 4 2022 12:13:58 for gem5 by doxygen 1.8.17