gem5  v21.1.0.2
tester_dma.hh
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2021 Advanced Micro Devices, Inc.
3  * All rights reserved.
4  *
5  * For use for simulation and test purposes only
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright notice,
11  * this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright notice,
14  * this list of conditions and the following disclaimer in the documentation
15  * and/or other materials provided with the distribution.
16  *
17  * 3. Neither the name of the copyright holder nor the names of its
18  * contributors may be used to endorse or promote products derived from this
19  * software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31  * POSSIBILITY OF SUCH DAMAGE.
32  */
33 
34 /*
35  * This is a fake DMA device to pass to Ruby.py so it will create the DMA
36  * sequencers and controllers without being protocol specific. It otherwise
37  * does nothing.
38  */
39 
40 #ifndef __CPU_TESTERS_GPU_RUBY_TEST_TESTER_DMA_HH__
41 #define __CPU_TESTERS_GPU_RUBY_TEST_TESTER_DMA_HH__
42 
43 #include "dev/dma_device.hh"
44 #include "params/TesterDma.hh"
45 
46 namespace gem5
47 {
48 
49 class TesterDma : public DmaDevice
50 {
51  public:
52  typedef TesterDmaParams Params;
53  TesterDma(const Params &p) : DmaDevice(p) { }
54  virtual ~TesterDma() { }
55 
56  // The tester does not use a huge memory range. The range itself is
57  // choosen arbitrarily
59  getAddrRanges() const override
60  {
61  AddrRangeList ranges;
62  ranges.push_back(RangeSize(0, 0xc0000000));
63  return ranges;
64  }
65 
66  // These latencies are not important. Return any integer.
67  Tick read(PacketPtr) override { return 10; }
68  Tick write(PacketPtr) override { return 10; }
69 };
70 
71 } // namespace gem5
72 
73 #endif /* __CPU_TESTERS_GPU_RUBY_TEST_TESTER_DMA_HH__ */
gem5::TesterDma::~TesterDma
virtual ~TesterDma()
Definition: tester_dma.hh:54
gem5::RangeSize
AddrRange RangeSize(Addr start, Addr size)
Definition: addr_range.hh:661
gem5::TesterDma::Params
TesterDmaParams Params
Definition: tester_dma.hh:52
gem5::TesterDma::TesterDma
TesterDma(const Params &p)
Definition: tester_dma.hh:53
dma_device.hh
gem5::TesterDma::write
Tick write(PacketPtr) override
Pure virtual function that the device must implement.
Definition: tester_dma.hh:68
gem5::Packet
A Packet is used to encapsulate a transfer between two objects in the memory system (e....
Definition: packet.hh:283
gem5::MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
gem5::Tick
uint64_t Tick
Tick count type.
Definition: types.hh:58
gem5::DmaDevice
Definition: dma_device.hh:203
gem5::TesterDma::read
Tick read(PacketPtr) override
Pure virtual function that the device must implement.
Definition: tester_dma.hh:67
std::list< AddrRange >
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
gem5::TesterDma
Definition: tester_dma.hh:49
gem5::TesterDma::getAddrRanges
AddrRangeList getAddrRanges() const override
Every PIO device is obliged to provide an implementation that returns the address ranges the device r...
Definition: tester_dma.hh:59

Generated on Tue Sep 21 2021 12:25:09 for gem5 by doxygen 1.8.17