gem5  v21.1.0.2
RubyRequest.cc
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40 
42 
43 #include <iostream>
44 
46 
47 namespace gem5
48 {
49 
50 namespace ruby
51 {
52 
53 void
54 RubyRequest::print(std::ostream& out) const
55 {
56  out << "[RubyRequest: ";
57  out << std::hex << "LineAddress = 0x" << m_LineAddress << std::dec << " ";
58  out << std::hex << "PhysicalAddress = 0x" << m_PhysicalAddress;
59  out << std::dec << " " << "Type = " << m_Type << " ";
60  out << std::hex << "ProgramCounter = 0x" << m_ProgramCounter << std::dec;
61  out << " " << "AccessMode = " << m_AccessMode << " ";
62  out << "Size = " << m_Size << " ";
63  out << "Prefetch = " << m_Prefetch << " ";
64 // out << "Time = " << getTime() << " ";
65  out << "]";
66 }
67 
68 bool
70 {
71  // This needs a little explanation. Initially I thought that this
72  // message should be read. But the way the memtester works for now,
73  // we should not be reading this message as memtester updates the
74  // functional memory only after a write has actually taken place.
75  return false;
76 }
77 
78 bool
80 {
81  return false;
82 }
83 
84 bool
86 {
87  // This needs a little explanation. I am not sure if this message
88  // should be written. Essentially the question is how are writes
89  // ordered. I am assuming that if a functional write is issued after
90  // a timing write to the same address, then the functional write
91  // has to overwrite the data for the timing request, even if the
92  // timing request has still not been ordered globally.
93 
94  if (!pkt->hasData() || !m_pkt->hasData())
95  return false;
96 
97  uint8_t *data = m_pkt->getPtr<uint8_t>();
98 
99  if (pkt->isMaskedWrite() || m_pkt->isMaskedWrite()) {
100  warn("Skiping functional write to/from a masked write packet"
101  " (addr: %#x, other addr: %#x).\n", m_PhysicalAddress,
102  pkt->getAddr());
103  return false;
104  }
105 
106  Addr wBase = pkt->getAddr();
107  Addr wTail = wBase + pkt->getSize();
108  Addr mBase = m_PhysicalAddress;
109  Addr mTail = mBase + m_Size;
110 
111  const uint8_t * pktData = pkt->getConstPtr<uint8_t>();
112 
113  Addr cBase = std::max(wBase, mBase);
114  Addr cTail = std::min(wTail, mTail);
115 
116  for (Addr i = cBase; i < cTail; ++i) {
117  data[i - mBase] = pktData[i - wBase];
118  }
119 
120  // also overwrite the WTData
122 
123  return cBase < cTail;
124 }
125 
126 } // namespace ruby
127 } // namespace gem5
gem5::ruby::RubyRequest::functionalRead
bool functionalRead(Packet *pkt)
The two functions below are used for reading / writing the message functionally.
Definition: RubyRequest.cc:69
gem5::ruby::WriteMask
Definition: WriteMask.hh:59
warn
#define warn(...)
Definition: logging.hh:245
gem5::ruby::RubyRequest::m_WTData
DataBlock m_WTData
Definition: RubyRequest.hh:74
data
const char data[]
Definition: circlebuf.test.cc:48
RubyRequest.hh
gem5::ArmISA::i
Bitfield< 7 > i
Definition: misc_types.hh:66
gem5::ruby::RubyRequest::functionalWrite
bool functionalWrite(Packet *pkt)
Definition: RubyRequest.cc:85
gem5::mask
constexpr uint64_t mask(unsigned nbits)
Generate a 64-bit mask of 'nbits' 1s, right justified.
Definition: bitfield.hh:63
gem5::Packet::hasData
bool hasData() const
Definition: packet.hh:603
gem5::ruby::RubyRequest::print
void print(std::ostream &out) const
Definition: RubyRequest.cc:54
gem5::Packet
A Packet is used to encapsulate a transfer between two objects in the memory system (e....
Definition: packet.hh:283
gem5::ruby::RubyRequest::m_pkt
PacketPtr m_pkt
Definition: RubyRequest.hh:71
gem5::Packet::getConstPtr
const T * getConstPtr() const
Definition: packet.hh:1193
gem5::ruby::RubyRequest::m_LineAddress
Addr m_LineAddress
Definition: RubyRequest.hh:65
RubySlicc_Util.hh
gem5::ruby::RubyRequest::m_PhysicalAddress
Addr m_PhysicalAddress
Definition: RubyRequest.hh:64
gem5::ruby::RubyRequest::m_Type
RubyRequestType m_Type
Definition: RubyRequest.hh:66
gem5::Addr
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition: types.hh:147
gem5::ruby::RubyRequest::m_ProgramCounter
Addr m_ProgramCounter
Definition: RubyRequest.hh:67
gem5::ruby::RubyRequest::m_Prefetch
PrefetchBit m_Prefetch
Definition: RubyRequest.hh:70
gem5::ruby::testAndWrite
bool testAndWrite(Addr addr, DataBlock &blk, Packet *pkt)
This function accepts an address, a data block and a packet.
Definition: RubySlicc_Util.hh:259
gem5::ruby::RubyRequest::m_Size
int m_Size
Definition: RubyRequest.hh:69
gem5::Packet::isMaskedWrite
bool isMaskedWrite() const
Definition: packet.hh:1400
gem5::Packet::getAddr
Addr getAddr() const
Definition: packet.hh:781
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
gem5::Packet::getSize
unsigned getSize() const
Definition: packet.hh:791
gem5::Packet::getPtr
T * getPtr()
get a pointer to the data ptr.
Definition: packet.hh:1184
gem5::ruby::RubyRequest::m_AccessMode
RubyAccessMode m_AccessMode
Definition: RubyRequest.hh:68

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