gem5  v21.1.0.2
noncoherent_xbar.hh
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40 
46 #ifndef __MEM_NONCOHERENT_XBAR_HH__
47 #define __MEM_NONCOHERENT_XBAR_HH__
48 
49 #include "mem/xbar.hh"
50 #include "params/NoncoherentXBar.hh"
51 
52 namespace gem5
53 {
54 
68 class NoncoherentXBar : public BaseXBar
69 {
70 
71  protected:
72 
79 
86  {
87  private:
88 
91 
94 
95  public:
96 
97  NoncoherentXBarResponsePort(const std::string &_name,
98  NoncoherentXBar &_xbar, PortID _id)
99  : QueuedResponsePort(_name, &_xbar, queue, _id), xbar(_xbar),
100  queue(_xbar, *this)
101  { }
102 
103  protected:
104 
105  bool
106  recvTimingReq(PacketPtr pkt) override
107  {
108  return xbar.recvTimingReq(pkt, id);
109  }
110 
111  Tick
112  recvAtomic(PacketPtr pkt) override
113  {
114  return xbar.recvAtomicBackdoor(pkt, id);
115  }
116 
117  Tick
118  recvAtomicBackdoor(PacketPtr pkt, MemBackdoorPtr &backdoor) override
119  {
120  return xbar.recvAtomicBackdoor(pkt, id, &backdoor);
121  }
122 
123  void
124  recvFunctional(PacketPtr pkt) override
125  {
126  xbar.recvFunctional(pkt, id);
127  }
128 
130  getAddrRanges() const override
131  {
132  return xbar.getAddrRanges();
133  }
134  };
135 
142  {
143  private:
144 
147 
148  public:
149 
150  NoncoherentXBarRequestPort(const std::string &_name,
151  NoncoherentXBar &_xbar, PortID _id)
152  : RequestPort(_name, &_xbar, _id), xbar(_xbar)
153  { }
154 
155  protected:
156 
157  bool
158  recvTimingResp(PacketPtr pkt) override
159  {
160  return xbar.recvTimingResp(pkt, id);
161  }
162 
163  void
164  recvRangeChange() override
165  {
166  xbar.recvRangeChange(id);
167  }
168 
169  void
170  recvReqRetry() override
171  {
172  xbar.recvReqRetry(id);
173  }
174  };
175 
176  virtual bool recvTimingReq(PacketPtr pkt, PortID cpu_side_port_id);
177  virtual bool recvTimingResp(PacketPtr pkt, PortID mem_side_port_id);
178  void recvReqRetry(PortID mem_side_port_id);
179  Tick recvAtomicBackdoor(PacketPtr pkt, PortID cpu_side_port_id,
180  MemBackdoorPtr *backdoor=nullptr);
181  void recvFunctional(PacketPtr pkt, PortID cpu_side_port_id);
182 
183  public:
184 
185  NoncoherentXBar(const NoncoherentXBarParams &p);
186 
187  virtual ~NoncoherentXBar();
188 };
189 
190 } // namespace gem5
191 
192 #endif //__MEM_NONCOHERENT_XBAR_HH__
gem5::PortID
int16_t PortID
Port index/ID type, and a symbolic name for an invalid port id.
Definition: types.hh:252
gem5::BaseXBar
The base crossbar contains the common elements of the non-coherent and coherent crossbar.
Definition: xbar.hh:71
gem5::NoncoherentXBar::NoncoherentXBarRequestPort
Declaration of the crossbar memory-side port type, one will be instantiated for each of the CPU-side ...
Definition: noncoherent_xbar.hh:141
gem5::RespPacketQueue
Definition: packet_queue.hh:300
xbar.hh
gem5::NoncoherentXBar
A non-coherent crossbar connects a number of non-snooping memory-side ports and cpu_sides,...
Definition: noncoherent_xbar.hh:68
gem5::NoncoherentXBar::NoncoherentXBarResponsePort::recvFunctional
void recvFunctional(PacketPtr pkt) override
Receive a functional request packet from the peer.
Definition: noncoherent_xbar.hh:124
gem5::NoncoherentXBar::reqLayers
std::vector< ReqLayer * > reqLayers
Declare the layers of this crossbar, one vector for requests and one for responses.
Definition: noncoherent_xbar.hh:77
gem5::NoncoherentXBar::recvFunctional
void recvFunctional(PacketPtr pkt, PortID cpu_side_port_id)
Definition: noncoherent_xbar.cc:288
gem5::NoncoherentXBar::NoncoherentXBarResponsePort::recvAtomicBackdoor
Tick recvAtomicBackdoor(PacketPtr pkt, MemBackdoorPtr &backdoor) override
Receive an atomic request packet from the peer, and optionally provide a backdoor to the data being a...
Definition: noncoherent_xbar.hh:118
gem5::NoncoherentXBar::NoncoherentXBarRequestPort::NoncoherentXBarRequestPort
NoncoherentXBarRequestPort(const std::string &_name, NoncoherentXBar &_xbar, PortID _id)
Definition: noncoherent_xbar.hh:150
std::vector< ReqLayer * >
gem5::NoncoherentXBar::recvAtomicBackdoor
Tick recvAtomicBackdoor(PacketPtr pkt, PortID cpu_side_port_id, MemBackdoorPtr *backdoor=nullptr)
Definition: noncoherent_xbar.cc:247
gem5::NoncoherentXBar::NoncoherentXBarResponsePort::NoncoherentXBarResponsePort
NoncoherentXBarResponsePort(const std::string &_name, NoncoherentXBar &_xbar, PortID _id)
Definition: noncoherent_xbar.hh:97
gem5::RequestPort
A RequestPort is a specialisation of a Port, which implements the default protocol for the three diff...
Definition: port.hh:77
gem5::NoncoherentXBar::NoncoherentXBarRequestPort::recvTimingResp
bool recvTimingResp(PacketPtr pkt) override
Receive a timing response from the peer.
Definition: noncoherent_xbar.hh:158
gem5::NoncoherentXBar::NoncoherentXBarResponsePort
Declaration of the non-coherent crossbar CPU-side port type, one will be instantiated for each of the...
Definition: noncoherent_xbar.hh:85
gem5::NoncoherentXBar::~NoncoherentXBar
virtual ~NoncoherentXBar()
Definition: noncoherent_xbar.cc:93
gem5::QueuedResponsePort
A queued port is a port that has an infinite queue for outgoing packets and thus decouples the module...
Definition: qport.hh:61
gem5::Packet
A Packet is used to encapsulate a transfer between two objects in the memory system (e....
Definition: packet.hh:283
gem5::NoncoherentXBar::NoncoherentXBarRequestPort::xbar
NoncoherentXBar & xbar
A reference to the crossbar to which this port belongs.
Definition: noncoherent_xbar.hh:146
gem5::MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
gem5::Tick
uint64_t Tick
Tick count type.
Definition: types.hh:58
gem5::NoncoherentXBar::respLayers
std::vector< RespLayer * > respLayers
Definition: noncoherent_xbar.hh:78
gem5::NoncoherentXBar::NoncoherentXBarResponsePort::xbar
NoncoherentXBar & xbar
A reference to the crossbar to which this port belongs.
Definition: noncoherent_xbar.hh:90
gem5::NoncoherentXBar::NoncoherentXBarRequestPort::recvReqRetry
void recvReqRetry() override
Called by the peer if sendTimingReq was called on this peer (causing recvTimingReq to be called on th...
Definition: noncoherent_xbar.hh:170
gem5::BaseXBar::recvRangeChange
virtual void recvRangeChange(PortID mem_side_port_id)
Function called by the port when the crossbar is recieving a range change.
Definition: xbar.cc:364
gem5::NoncoherentXBar::NoncoherentXBarResponsePort::recvAtomic
Tick recvAtomic(PacketPtr pkt) override
Receive an atomic request packet from the peer.
Definition: noncoherent_xbar.hh:112
gem5::BaseXBar::getAddrRanges
AddrRangeList getAddrRanges() const
Return the address ranges the crossbar is responsible for.
Definition: xbar.cc:526
gem5::NoncoherentXBar::recvTimingReq
virtual bool recvTimingReq(PacketPtr pkt, PortID cpu_side_port_id)
Definition: noncoherent_xbar.cc:102
gem5::NoncoherentXBar::NoncoherentXBarResponsePort::recvTimingReq
bool recvTimingReq(PacketPtr pkt) override
Receive a timing request from the peer.
Definition: noncoherent_xbar.hh:106
gem5::MemBackdoor
Definition: backdoor.hh:41
gem5::NoncoherentXBar::NoncoherentXBar
NoncoherentXBar(const NoncoherentXBarParams &p)
Definition: noncoherent_xbar.cc:56
gem5::NoncoherentXBar::NoncoherentXBarResponsePort::queue
RespPacketQueue queue
A normal packet queue used to store responses.
Definition: noncoherent_xbar.hh:93
gem5::NoncoherentXBar::recvTimingResp
virtual bool recvTimingResp(PacketPtr pkt, PortID mem_side_port_id)
Definition: noncoherent_xbar.cc:180
std::list< AddrRange >
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
gem5::NoncoherentXBar::NoncoherentXBarRequestPort::recvRangeChange
void recvRangeChange() override
Called to receive an address range change from the peer response port.
Definition: noncoherent_xbar.hh:164
gem5::NoncoherentXBar::recvReqRetry
void recvReqRetry(PortID mem_side_port_id)
Definition: noncoherent_xbar.cc:238
gem5::NoncoherentXBar::NoncoherentXBarResponsePort::getAddrRanges
AddrRangeList getAddrRanges() const override
Get a list of the non-overlapping address ranges the owner is responsible for.
Definition: noncoherent_xbar.hh:130
gem5::Named::_name
const std::string _name
Definition: named.hh:41

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