traffic_gen.cc (9584:1a21964b7227) | traffic_gen.cc (9666:74aca4cb081e) |
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1/* 2 * Copyright (c) 2012 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 --- 31 unchanged lines hidden (view full) --- 40 */ 41 42#include <sstream> 43 44#include "base/random.hh" 45#include "cpu/testers/traffic_gen/traffic_gen.hh" 46#include "debug/Checkpoint.hh" 47#include "debug/TrafficGen.hh" | 1/* 2 * Copyright (c) 2012 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 --- 31 unchanged lines hidden (view full) --- 40 */ 41 42#include <sstream> 43 44#include "base/random.hh" 45#include "cpu/testers/traffic_gen/traffic_gen.hh" 46#include "debug/Checkpoint.hh" 47#include "debug/TrafficGen.hh" |
48#include "proto/packet.pb.h" | |
49#include "sim/stats.hh" 50#include "sim/system.hh" 51 52using namespace std; 53 54TrafficGen::TrafficGen(const TrafficGenParams* p) 55 : MemObject(p), 56 system(p->system), --- 282 unchanged lines hidden (view full) --- 339{ 340 DPRINTF(TrafficGen, "Transition to state %d\n", newState); 341 342 currState = newState; 343 nextTransitionTick += states[currState]->duration; 344 states[currState]->enter(); 345} 346 | 48#include "sim/stats.hh" 49#include "sim/system.hh" 50 51using namespace std; 52 53TrafficGen::TrafficGen(const TrafficGenParams* p) 54 : MemObject(p), 55 system(p->system), --- 282 unchanged lines hidden (view full) --- 338{ 339 DPRINTF(TrafficGen, "Transition to state %d\n", newState); 340 341 currState = newState; 342 nextTransitionTick += states[currState]->duration; 343 states[currState]->enter(); 344} 345 |
347TrafficGen::StateGraph::BaseGen::BaseGen(QueuedMasterPort& _port, 348 MasterID master_id, 349 Tick _duration) 350 : port(_port), masterID(master_id), duration(_duration) 351{ 352} 353 354void 355TrafficGen::StateGraph::BaseGen::send(Addr addr, unsigned size, 356 const MemCmd& cmd) 357{ 358 // Create new request 359 Request::Flags flags; 360 Request *req = new Request(addr, size, flags, masterID); 361 362 // Embed it in a packet 363 PacketPtr pkt = new Packet(req, cmd); 364 365 uint8_t* pkt_data = new uint8_t[req->getSize()]; 366 pkt->dataDynamicArray(pkt_data); 367 368 if (cmd.isWrite()) { 369 memset(pkt_data, 0xA, req->getSize()); 370 } 371 372 port.schedTimingReq(pkt, curTick()); 373} 374 375void 376TrafficGen::StateGraph::LinearGen::enter() 377{ 378 // reset the address and the data counter 379 nextAddr = startAddr; 380 dataManipulated = 0; 381 382 // this test only needs to happen once, but cannot be performed 383 // before init() is called and the ports are connected 384 if (port.deviceBlockSize() && blocksize > port.deviceBlockSize()) 385 fatal("TrafficGen %s block size (%d) is larger than port" 386 " block size (%d)\n", blocksize, port.deviceBlockSize()); 387 388} 389 390void 391TrafficGen::StateGraph::LinearGen::execute() 392{ 393 // choose if we generate a read or a write here 394 bool isRead = readPercent != 0 && 395 (readPercent == 100 || random_mt.random<uint8_t>(0, 100) < readPercent); 396 397 assert((readPercent == 0 && !isRead) || (readPercent == 100 && isRead) || 398 readPercent != 100); 399 400 DPRINTF(TrafficGen, "LinearGen::execute: %c to addr %x, size %d\n", 401 isRead ? 'r' : 'w', nextAddr, blocksize); 402 403 send(nextAddr, blocksize, isRead ? MemCmd::ReadReq : MemCmd::WriteReq); 404 405 // increment the address 406 nextAddr += blocksize; 407 408 // Add the amount of data manipulated to the total 409 dataManipulated += blocksize; 410} 411 412Tick 413TrafficGen::StateGraph::LinearGen::nextExecuteTick() 414{ 415 // If we have reached the end of the address space, reset the 416 // address to the start of the range 417 if (nextAddr + blocksize > endAddr) { 418 DPRINTF(TrafficGen, "Wrapping address to the start of " 419 "the range\n"); 420 nextAddr = startAddr; 421 } 422 423 // Check to see if we have reached the data limit. If dataLimit is 424 // zero we do not have a data limit and therefore we will keep 425 // generating requests for the entire residency in this state. 426 if (dataLimit && dataManipulated >= dataLimit) { 427 DPRINTF(TrafficGen, "Data limit for LinearGen reached.\n"); 428 // there are no more requests, therefore return MaxTick 429 return MaxTick; 430 } else { 431 // return the time when the next request should take place 432 return curTick() + random_mt.random<Tick>(minPeriod, maxPeriod); 433 } 434} 435 436void 437TrafficGen::StateGraph::RandomGen::enter() 438{ 439 // reset the counter to zero 440 dataManipulated = 0; 441 442 // this test only needs to happen once, but cannot be performed 443 // before init() is called and the ports are connected 444 if (port.deviceBlockSize() && blocksize > port.deviceBlockSize()) 445 fatal("TrafficGen %s block size (%d) is larger than port" 446 " block size (%d)\n", name(), blocksize, port.deviceBlockSize()); 447} 448 449void 450TrafficGen::StateGraph::RandomGen::execute() 451{ 452 // choose if we generate a read or a write here 453 bool isRead = readPercent != 0 && 454 (readPercent == 100 || random_mt.random<uint8_t>(0, 100) < readPercent); 455 456 assert((readPercent == 0 && !isRead) || (readPercent == 100 && isRead) || 457 readPercent != 100); 458 459 // address of the request 460 Addr addr = random_mt.random<Addr>(startAddr, endAddr - 1); 461 462 // round down to start address of block 463 addr -= addr % blocksize; 464 465 DPRINTF(TrafficGen, "RandomGen::execute: %c to addr %x, size %d\n", 466 isRead ? 'r' : 'w', addr, blocksize); 467 468 // send a new request packet 469 send(addr, blocksize, isRead ? MemCmd::ReadReq : MemCmd::WriteReq); 470 471 // Add the amount of data manipulated to the total 472 dataManipulated += blocksize; 473} 474 475Tick 476TrafficGen::StateGraph::RandomGen::nextExecuteTick() 477{ 478 // Check to see if we have reached the data limit. If dataLimit is 479 // zero we do not have a data limit and therefore we will keep 480 // generating requests for the entire residency in this state. 481 if (dataLimit && dataManipulated >= dataLimit) 482 { 483 DPRINTF(TrafficGen, "Data limit for RandomGen reached.\n"); 484 // No more requests. Return MaxTick. 485 return MaxTick; 486 } else { 487 // Return the time when the next request should take place. 488 return curTick() + random_mt.random<Tick>(minPeriod, maxPeriod); 489 } 490} 491 492TrafficGen::StateGraph::TraceGen::InputStream::InputStream(const string& 493 filename) 494 : trace(filename) 495{ 496 // Create a protobuf message for the header and read it from the stream 497 Message::PacketHeader header_msg; 498 if (!trace.read(header_msg)) { 499 panic("Failed to read packet header from %s\n", filename); 500 501 if (header_msg.tick_freq() != SimClock::Frequency) { 502 panic("Trace %s was recorded with a different tick frequency %d\n", 503 header_msg.tick_freq()); 504 } 505 } 506} 507 508void 509TrafficGen::StateGraph::TraceGen::InputStream::reset() 510{ 511 trace.reset(); 512} 513 | |
514bool | 346bool |
515TrafficGen::StateGraph::TraceGen::InputStream::read(TraceElement& element) 516{ 517 Message::Packet pkt_msg; 518 if (trace.read(pkt_msg)) { 519 element.cmd = pkt_msg.cmd(); 520 element.addr = pkt_msg.addr(); 521 element.blocksize = pkt_msg.size(); 522 element.tick = pkt_msg.tick(); 523 return true; 524 } 525 526 // We have reached the end of the file 527 return false; 528} 529 530Tick 531TrafficGen::StateGraph::TraceGen::nextExecuteTick() { 532 if (traceComplete) 533 // We are at the end of the file, thus we have no more data in 534 // the trace Return MaxTick to signal that there will be no 535 // more transactions in this active period for the state. 536 return MaxTick; 537 538 539 //Reset the nextElement to the default values 540 currElement = nextElement; 541 nextElement.clear(); 542 543 // We need to look at the next line to calculate the next time an 544 // event occurs, or potentially return MaxTick to signal that 545 // nothing has to be done. 546 if (!trace.read(nextElement)) { 547 traceComplete = true; 548 return MaxTick; 549 } 550 551 DPRINTF(TrafficGen, "currElement: %c addr %d size %d tick %d (%d)\n", 552 currElement.cmd.isRead() ? 'r' : 'w', 553 currElement.addr, 554 currElement.blocksize, 555 currElement.tick + tickOffset, 556 currElement.tick); 557 558 DPRINTF(TrafficGen, "nextElement: %c addr %d size %d tick %d (%d)\n", 559 nextElement.cmd.isRead() ? 'r' : 'w', 560 nextElement.addr, 561 nextElement.blocksize, 562 nextElement.tick + tickOffset, 563 nextElement.tick); 564 565 return tickOffset + nextElement.tick; 566} 567 568void 569TrafficGen::StateGraph::TraceGen::enter() { 570 // update the trace offset to the time where the state was entered. 571 tickOffset = curTick(); 572 573 // clear everything 574 nextElement.clear(); 575 currElement.clear(); 576 577 traceComplete = false; 578} 579 580void 581TrafficGen::StateGraph::TraceGen::execute() { 582 // it is the responsibility of nextExecuteTick to prevent the 583 // state graph from executing the state if it should not 584 assert(currElement.isValid()); 585 586 DPRINTF(TrafficGen, "TraceGen::execute: %c %d %d %d\n", 587 currElement.cmd.isRead() ? 'r' : 'w', 588 currElement.addr, 589 currElement.blocksize, 590 currElement.tick); 591 592 send(currElement.addr + addrOffset, currElement.blocksize, 593 currElement.cmd); 594} 595 596void 597TrafficGen::StateGraph::TraceGen::exit() { 598 // Check if we reached the end of the trace file. If we did not 599 // then we want to generate a warning stating that not the entire 600 // trace was played. 601 if (!traceComplete) { 602 warn("Trace player %s was unable to replay the entire trace!\n", 603 name()); 604 } 605 606 // Clear any flags and start over again from the beginning of the 607 // file 608 trace.reset(); 609} 610 611bool | |
612TrafficGen::TrafficGenPort::recvTimingResp(PacketPtr pkt) 613{ 614 delete pkt->req; 615 delete pkt; 616 617 return true; 618} | 347TrafficGen::TrafficGenPort::recvTimingResp(PacketPtr pkt) 348{ 349 delete pkt->req; 350 delete pkt; 351 352 return true; 353} |