coherent_xbar.cc (10405:7a618c07e663) coherent_xbar.cc (10572:fc4c90a7d2f5)
1/*
2 * Copyright (c) 2011-2014 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

--- 258 unchanged lines hidden (view full) ---

267bool
268CoherentXBar::recvTimingResp(PacketPtr pkt, PortID master_port_id)
269{
270 // determine the source port based on the id
271 MasterPort *src_port = masterPorts[master_port_id];
272
273 // determine the destination based on what is stored in the packet
274 PortID slave_port_id = pkt->getDest();
1/*
2 * Copyright (c) 2011-2014 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

--- 258 unchanged lines hidden (view full) ---

267bool
268CoherentXBar::recvTimingResp(PacketPtr pkt, PortID master_port_id)
269{
270 // determine the source port based on the id
271 MasterPort *src_port = masterPorts[master_port_id];
272
273 // determine the destination based on what is stored in the packet
274 PortID slave_port_id = pkt->getDest();
275 assert(slave_port_id != InvalidPortID);
276 assert(slave_port_id < respLayers.size());
275
276 // test if the crossbar should be considered occupied for the
277 // current port
278 if (!respLayers[slave_port_id]->tryTiming(src_port)) {
279 DPRINTF(CoherentXBar, "recvTimingResp: src %s %s 0x%x BUSY\n",
280 src_port->name(), pkt->cmdString(), pkt->getAddr());
281 return false;
282 }

--- 81 unchanged lines hidden (view full) ---

364bool
365CoherentXBar::recvTimingSnoopResp(PacketPtr pkt, PortID slave_port_id)
366{
367 // determine the source port based on the id
368 SlavePort* src_port = slavePorts[slave_port_id];
369
370 // get the destination from the packet
371 PortID dest_port_id = pkt->getDest();
277
278 // test if the crossbar should be considered occupied for the
279 // current port
280 if (!respLayers[slave_port_id]->tryTiming(src_port)) {
281 DPRINTF(CoherentXBar, "recvTimingResp: src %s %s 0x%x BUSY\n",
282 src_port->name(), pkt->cmdString(), pkt->getAddr());
283 return false;
284 }

--- 81 unchanged lines hidden (view full) ---

366bool
367CoherentXBar::recvTimingSnoopResp(PacketPtr pkt, PortID slave_port_id)
368{
369 // determine the source port based on the id
370 SlavePort* src_port = slavePorts[slave_port_id];
371
372 // get the destination from the packet
373 PortID dest_port_id = pkt->getDest();
374 assert(dest_port_id != InvalidPortID);
372
373 // determine if the response is from a snoop request we
374 // created as the result of a normal request (in which case it
375 // should be in the outstandingReq), or if we merely forwarded
376 // someone else's snoop request
377 bool forwardAsSnoop = outstandingReq.find(pkt->req) ==
378 outstandingReq.end();
379
380 // test if the crossbar should be considered occupied for the
381 // current port, note that the check is bypassed if the response
382 // is being passed on as a normal response since this is occupying
383 // the response layer rather than the snoop response layer
384 if (forwardAsSnoop) {
375
376 // determine if the response is from a snoop request we
377 // created as the result of a normal request (in which case it
378 // should be in the outstandingReq), or if we merely forwarded
379 // someone else's snoop request
380 bool forwardAsSnoop = outstandingReq.find(pkt->req) ==
381 outstandingReq.end();
382
383 // test if the crossbar should be considered occupied for the
384 // current port, note that the check is bypassed if the response
385 // is being passed on as a normal response since this is occupying
386 // the response layer rather than the snoop response layer
387 if (forwardAsSnoop) {
388 assert(dest_port_id < snoopLayers.size());
385 if (!snoopLayers[dest_port_id]->tryTiming(src_port)) {
386 DPRINTF(CoherentXBar, "recvTimingSnoopResp: src %s %s 0x%x BUSY\n",
387 src_port->name(), pkt->cmdString(), pkt->getAddr());
388 return false;
389 }
390 } else {
391 // get the master port that mirrors this slave port internally
392 MasterPort* snoop_port = snoopRespPorts[slave_port_id];
389 if (!snoopLayers[dest_port_id]->tryTiming(src_port)) {
390 DPRINTF(CoherentXBar, "recvTimingSnoopResp: src %s %s 0x%x BUSY\n",
391 src_port->name(), pkt->cmdString(), pkt->getAddr());
392 return false;
393 }
394 } else {
395 // get the master port that mirrors this slave port internally
396 MasterPort* snoop_port = snoopRespPorts[slave_port_id];
397 assert(dest_port_id < respLayers.size());
393 if (!respLayers[dest_port_id]->tryTiming(snoop_port)) {
394 DPRINTF(CoherentXBar, "recvTimingSnoopResp: src %s %s 0x%x BUSY\n",
395 snoop_port->name(), pkt->cmdString(), pkt->getAddr());
396 return false;
397 }
398 }
399
400 DPRINTF(CoherentXBar, "recvTimingSnoopResp: src %s %s 0x%x\n",

--- 413 unchanged lines hidden --- 		398 if (!respLayers[dest_port_id]->tryTiming(snoop_port)) {
399 DPRINTF(CoherentXBar, "recvTimingSnoopResp: src %s %s 0x%x BUSY\n",
400 snoop_port->name(), pkt->cmdString(), pkt->getAddr());
401 return false;
402 }
403 }
404
405 DPRINTF(CoherentXBar, "recvTimingSnoopResp: src %s %s 0x%x\n",

--- 413 unchanged lines hidden ---