coherent_xbar.hh (10883:9294c4a60251) | coherent_xbar.hh (10888:85a001f2193b) |
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1/* 2 * Copyright (c) 2011-2015 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software --- 70 unchanged lines hidden (view full) --- 79 std::vector<RespLayer*> respLayers; 80 std::vector<SnoopRespLayer*> snoopLayers; 81 82 /** 83 * Declaration of the coherent crossbar slave port type, one will 84 * be instantiated for each of the master ports connecting to the 85 * crossbar. 86 */ | 1/* 2 * Copyright (c) 2011-2015 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software --- 70 unchanged lines hidden (view full) --- 79 std::vector<RespLayer*> respLayers; 80 std::vector<SnoopRespLayer*> snoopLayers; 81 82 /** 83 * Declaration of the coherent crossbar slave port type, one will 84 * be instantiated for each of the master ports connecting to the 85 * crossbar. 86 */ |
87 class CoherentXBarSlavePort : public SlavePort | 87 class CoherentXBarSlavePort : public QueuedSlavePort |
88 { 89 90 private: 91 92 /** A reference to the crossbar to which this port belongs. */ 93 CoherentXBar &xbar; 94 | 88 { 89 90 private: 91 92 /** A reference to the crossbar to which this port belongs. */ 93 CoherentXBar &xbar; 94 |
95 /** A normal packet queue used to store responses. */ 96 RespPacketQueue queue; 97 |
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95 public: 96 97 CoherentXBarSlavePort(const std::string &_name, 98 CoherentXBar &_xbar, PortID _id) | 98 public: 99 100 CoherentXBarSlavePort(const std::string &_name, 101 CoherentXBar &_xbar, PortID _id) |
99 : SlavePort(_name, &_xbar, _id), xbar(_xbar) | 102 : QueuedSlavePort(_name, &_xbar, queue, _id), xbar(_xbar), 103 queue(_xbar, *this) |
100 { } 101 102 protected: 103 104 /** 105 * When receiving a timing request, pass it to the crossbar. 106 */ 107 virtual bool recvTimingReq(PacketPtr pkt) --- 13 unchanged lines hidden (view full) --- 121 122 /** 123 * When receiving a functional request, pass it to the crossbar. 124 */ 125 virtual void recvFunctional(PacketPtr pkt) 126 { xbar.recvFunctional(pkt, id); } 127 128 /** | 104 { } 105 106 protected: 107 108 /** 109 * When receiving a timing request, pass it to the crossbar. 110 */ 111 virtual bool recvTimingReq(PacketPtr pkt) --- 13 unchanged lines hidden (view full) --- 125 126 /** 127 * When receiving a functional request, pass it to the crossbar. 128 */ 129 virtual void recvFunctional(PacketPtr pkt) 130 { xbar.recvFunctional(pkt, id); } 131 132 /** |
129 * When receiving a retry, pass it to the crossbar. 130 */ 131 virtual void recvRespRetry() 132 { panic("Crossbar slave ports should never retry.\n"); } 133 134 /** | |
135 * Return the union of all adress ranges seen by this crossbar. 136 */ 137 virtual AddrRangeList getAddrRanges() const 138 { return xbar.getAddrRanges(); } 139 140 }; 141 142 /** --- 67 unchanged lines hidden (view full) --- 210 * port. It is effectively a dangling master port. 211 */ 212 class SnoopRespPort : public MasterPort 213 { 214 215 private: 216 217 /** The port which we mirror internally. */ | 133 * Return the union of all adress ranges seen by this crossbar. 134 */ 135 virtual AddrRangeList getAddrRanges() const 136 { return xbar.getAddrRanges(); } 137 138 }; 139 140 /** --- 67 unchanged lines hidden (view full) --- 208 * port. It is effectively a dangling master port. 209 */ 210 class SnoopRespPort : public MasterPort 211 { 212 213 private: 214 215 /** The port which we mirror internally. */ |
218 SlavePort& slavePort; | 216 QueuedSlavePort& slavePort; |
219 220 public: 221 222 /** 223 * Create a snoop response port that mirrors a given slave port. 224 */ | 217 218 public: 219 220 /** 221 * Create a snoop response port that mirrors a given slave port. 222 */ |
225 SnoopRespPort(SlavePort& slave_port, CoherentXBar& _xbar) : | 223 SnoopRespPort(QueuedSlavePort& slave_port, CoherentXBar& _xbar) : |
226 MasterPort(slave_port.name() + ".snoopRespPort", &_xbar), 227 slavePort(slave_port) { } 228 229 /** 230 * Override the sending of retries and pass them on through 231 * the mirrored slave port. 232 */ 233 void sendRetryResp() { --- 14 unchanged lines hidden (view full) --- 248 panic("SnoopRespPort should never see timing response\n"); 249 return false; 250 } 251 252 }; 253 254 std::vector<SnoopRespPort*> snoopRespPorts; 255 | 224 MasterPort(slave_port.name() + ".snoopRespPort", &_xbar), 225 slavePort(slave_port) { } 226 227 /** 228 * Override the sending of retries and pass them on through 229 * the mirrored slave port. 230 */ 231 void sendRetryResp() { --- 14 unchanged lines hidden (view full) --- 246 panic("SnoopRespPort should never see timing response\n"); 247 return false; 248 } 249 250 }; 251 252 std::vector<SnoopRespPort*> snoopRespPorts; 253 |
256 std::vector | 254 std::vector<QueuedSlavePort*> snoopPorts; |
257 258 /** 259 * Store the outstanding requests that we are expecting snoop 260 * responses from so we can determine which snoop responses we 261 * generated and which ones were merely forwarded. 262 */ 263 m5::hash_set<RequestPtr> outstandingSnoop; 264 --- 54 unchanged lines hidden (view full) --- 319 * excluding one of the connected coherent masters to avoid sending a packet 320 * back to where it came from. 321 * 322 * @param pkt Packet to forward 323 * @param exclude_slave_port_id Id of slave port to exclude 324 * @param dests Vector of destination ports for the forwarded pkt 325 */ 326 void forwardTiming(PacketPtr pkt, PortID exclude_slave_port_id, | 255 256 /** 257 * Store the outstanding requests that we are expecting snoop 258 * responses from so we can determine which snoop responses we 259 * generated and which ones were merely forwarded. 260 */ 261 m5::hash_set<RequestPtr> outstandingSnoop; 262 --- 54 unchanged lines hidden (view full) --- 317 * excluding one of the connected coherent masters to avoid sending a packet 318 * back to where it came from. 319 * 320 * @param pkt Packet to forward 321 * @param exclude_slave_port_id Id of slave port to exclude 322 * @param dests Vector of destination ports for the forwarded pkt 323 */ 324 void forwardTiming(PacketPtr pkt, PortID exclude_slave_port_id, |
327 const std::vector | 325 const std::vector<QueuedSlavePort*>& dests); |
328 329 /** Function called by the port when the crossbar is recieving a Atomic 330 transaction.*/ 331 Tick recvAtomic(PacketPtr pkt, PortID slave_port_id); 332 333 /** Function called by the port when the crossbar is recieving an 334 atomic snoop transaction.*/ 335 Tick recvAtomicSnoop(PacketPtr pkt, PortID master_port_id); --- 6 unchanged lines hidden (view full) --- 342 * @param pkt Packet to forward 343 * @param exclude_slave_port_id Id of slave port to exclude 344 * 345 * @return a pair containing the snoop response and snoop latency 346 */ 347 std::pair<MemCmd, Tick> forwardAtomic(PacketPtr pkt, 348 PortID exclude_slave_port_id) 349 { | 326 327 /** Function called by the port when the crossbar is recieving a Atomic 328 transaction.*/ 329 Tick recvAtomic(PacketPtr pkt, PortID slave_port_id); 330 331 /** Function called by the port when the crossbar is recieving an 332 atomic snoop transaction.*/ 333 Tick recvAtomicSnoop(PacketPtr pkt, PortID master_port_id); --- 6 unchanged lines hidden (view full) --- 340 * @param pkt Packet to forward 341 * @param exclude_slave_port_id Id of slave port to exclude 342 * 343 * @return a pair containing the snoop response and snoop latency 344 */ 345 std::pair<MemCmd, Tick> forwardAtomic(PacketPtr pkt, 346 PortID exclude_slave_port_id) 347 { |
350 return forwardAtomic(pkt, exclude_slave_port_id, InvalidPortID, snoopPorts); | 348 return forwardAtomic(pkt, exclude_slave_port_id, InvalidPortID, 349 snoopPorts); |
351 } 352 353 /** 354 * Forward an atomic packet to a selected list of snoopers, potentially 355 * excluding one of the connected coherent masters to avoid sending a packet 356 * back to where it came from. 357 * 358 * @param pkt Packet to forward 359 * @param exclude_slave_port_id Id of slave port to exclude 360 * @param source_master_port_id Id of the master port for snoops from below 361 * @param dests Vector of destination ports for the forwarded pkt 362 * 363 * @return a pair containing the snoop response and snoop latency 364 */ 365 std::pair<MemCmd, Tick> forwardAtomic(PacketPtr pkt, 366 PortID exclude_slave_port_id, 367 PortID source_master_port_id, | 350 } 351 352 /** 353 * Forward an atomic packet to a selected list of snoopers, potentially 354 * excluding one of the connected coherent masters to avoid sending a packet 355 * back to where it came from. 356 * 357 * @param pkt Packet to forward 358 * @param exclude_slave_port_id Id of slave port to exclude 359 * @param source_master_port_id Id of the master port for snoops from below 360 * @param dests Vector of destination ports for the forwarded pkt 361 * 362 * @return a pair containing the snoop response and snoop latency 363 */ 364 std::pair<MemCmd, Tick> forwardAtomic(PacketPtr pkt, 365 PortID exclude_slave_port_id, 366 PortID source_master_port_id, |
368 const std::vector<SlavePort*>& dests); | 367 const std::vector<QueuedSlavePort*>& 368 dests); |
369 370 /** Function called by the port when the crossbar is recieving a Functional 371 transaction.*/ 372 void recvFunctional(PacketPtr pkt, PortID slave_port_id); 373 374 /** Function called by the port when the crossbar is recieving a functional 375 snoop transaction.*/ 376 void recvFunctionalSnoop(PacketPtr pkt, PortID master_port_id); --- 28 unchanged lines hidden --- | 369 370 /** Function called by the port when the crossbar is recieving a Functional 371 transaction.*/ 372 void recvFunctional(PacketPtr pkt, PortID slave_port_id); 373 374 /** Function called by the port when the crossbar is recieving a functional 375 snoop transaction.*/ 376 void recvFunctionalSnoop(PacketPtr pkt, PortID master_port_id); --- 28 unchanged lines hidden --- |