traffic_gen.hh revision 9717
19241Sandreas.hansson@arm.com/* 29717Sandreas.hansson@arm.com * Copyright (c) 2012-2013 ARM Limited 39241Sandreas.hansson@arm.com * All rights reserved 49241Sandreas.hansson@arm.com * 59241Sandreas.hansson@arm.com * The license below extends only to copyright in the software and shall 69241Sandreas.hansson@arm.com * not be construed as granting a license to any other intellectual 79241Sandreas.hansson@arm.com * property including but not limited to intellectual property relating 89241Sandreas.hansson@arm.com * to a hardware implementation of the functionality of the software 99241Sandreas.hansson@arm.com * licensed hereunder. You may use the software subject to the license 109241Sandreas.hansson@arm.com * terms below provided that you ensure that this notice is replicated 119241Sandreas.hansson@arm.com * unmodified and in its entirety in all distributions of the software, 129241Sandreas.hansson@arm.com * modified or unmodified, in source code or in binary form. 139241Sandreas.hansson@arm.com * 149241Sandreas.hansson@arm.com * Redistribution and use in source and binary forms, with or without 159241Sandreas.hansson@arm.com * modification, are permitted provided that the following conditions are 169241Sandreas.hansson@arm.com * met: redistributions of source code must retain the above copyright 179241Sandreas.hansson@arm.com * notice, this list of conditions and the following disclaimer; 189241Sandreas.hansson@arm.com * redistributions in binary form must reproduce the above copyright 199241Sandreas.hansson@arm.com * notice, this list of conditions and the following disclaimer in the 209241Sandreas.hansson@arm.com * documentation and/or other materials provided with the distribution; 219241Sandreas.hansson@arm.com * neither the name of the copyright holders nor the names of its 229241Sandreas.hansson@arm.com * contributors may be used to endorse or promote products derived from 239241Sandreas.hansson@arm.com * this software without specific prior written permission. 249241Sandreas.hansson@arm.com * 259241Sandreas.hansson@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 269241Sandreas.hansson@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 279241Sandreas.hansson@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 289241Sandreas.hansson@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 299241Sandreas.hansson@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 309241Sandreas.hansson@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 319241Sandreas.hansson@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 329241Sandreas.hansson@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 339241Sandreas.hansson@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 349241Sandreas.hansson@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 359241Sandreas.hansson@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 369241Sandreas.hansson@arm.com * 379241Sandreas.hansson@arm.com * Authors: Thomas Grass 389241Sandreas.hansson@arm.com * Andreas Hansson 399241Sandreas.hansson@arm.com * Sascha Bischoff 409241Sandreas.hansson@arm.com */ 419666Sandreas.hansson@arm.com#ifndef __CPU_TRAFFIC_GEN_TRAFFIC_GEN_HH__ 429666Sandreas.hansson@arm.com#define __CPU_TRAFFIC_GEN_TRAFFIC_GEN_HH__ 439241Sandreas.hansson@arm.com 449241Sandreas.hansson@arm.com#include "base/hashmap.hh" 459666Sandreas.hansson@arm.com#include "cpu/testers/traffic_gen/generators.hh" 469241Sandreas.hansson@arm.com#include "mem/mem_object.hh" 479241Sandreas.hansson@arm.com#include "mem/qport.hh" 489241Sandreas.hansson@arm.com#include "params/TrafficGen.hh" 499241Sandreas.hansson@arm.com 509241Sandreas.hansson@arm.com/** 519241Sandreas.hansson@arm.com * The traffic generator is a master module that generates stimuli for 529717Sandreas.hansson@arm.com * the memory system, based on a collection of simple generator 539717Sandreas.hansson@arm.com * behaviours that are either probabilistic or based on traces. It can 549717Sandreas.hansson@arm.com * be used stand alone for creating test cases for interconnect and 559717Sandreas.hansson@arm.com * memory controllers, or function as a black box replacement for 569717Sandreas.hansson@arm.com * system components that are not yet modelled in detail, e.g. a video 579717Sandreas.hansson@arm.com * engine or baseband subsystem. 589241Sandreas.hansson@arm.com */ 599241Sandreas.hansson@arm.comclass TrafficGen : public MemObject 609241Sandreas.hansson@arm.com{ 619241Sandreas.hansson@arm.com 629241Sandreas.hansson@arm.com private: 639241Sandreas.hansson@arm.com 649241Sandreas.hansson@arm.com /** 659717Sandreas.hansson@arm.com * Determine next state and perform the transition. 669717Sandreas.hansson@arm.com */ 679717Sandreas.hansson@arm.com void transition(); 689717Sandreas.hansson@arm.com 699717Sandreas.hansson@arm.com /** 709717Sandreas.hansson@arm.com * Enter a new state. 719717Sandreas.hansson@arm.com * 729717Sandreas.hansson@arm.com * @param newState identifier of state to enter 739717Sandreas.hansson@arm.com */ 749717Sandreas.hansson@arm.com void enterState(uint32_t newState); 759717Sandreas.hansson@arm.com 769717Sandreas.hansson@arm.com /** 779717Sandreas.hansson@arm.com * Get the tick of the next event, either an execution or a 789717Sandreas.hansson@arm.com * transition. 799717Sandreas.hansson@arm.com * 809717Sandreas.hansson@arm.com * @return tick of the next update event 819717Sandreas.hansson@arm.com */ 829717Sandreas.hansson@arm.com Tick nextEventTick() 839717Sandreas.hansson@arm.com { 849717Sandreas.hansson@arm.com return std::min(states[currState]->nextExecuteTick(), 859717Sandreas.hansson@arm.com nextTransitionTick); 869717Sandreas.hansson@arm.com } 879717Sandreas.hansson@arm.com 889717Sandreas.hansson@arm.com /** 899717Sandreas.hansson@arm.com * Parse the config file and build the state map and 909717Sandreas.hansson@arm.com * transition matrix. 919717Sandreas.hansson@arm.com * 929717Sandreas.hansson@arm.com * @param file_name Config file name to parse 939717Sandreas.hansson@arm.com * @param master_id MasterID to use for generated requests 949717Sandreas.hansson@arm.com */ 959717Sandreas.hansson@arm.com void parseConfig(const std::string& file_name, MasterID master_id); 969717Sandreas.hansson@arm.com 979717Sandreas.hansson@arm.com /** 989717Sandreas.hansson@arm.com * Schedules event for next update and executes an update on the 999717Sandreas.hansson@arm.com * state graph, either performing a state transition or executing 1009717Sandreas.hansson@arm.com * the current state, depending on the current time. 1019717Sandreas.hansson@arm.com */ 1029717Sandreas.hansson@arm.com void update(); 1039717Sandreas.hansson@arm.com 1049717Sandreas.hansson@arm.com /** Struct to represent a probabilistic transition during parsing. */ 1059717Sandreas.hansson@arm.com struct Transition { 1069717Sandreas.hansson@arm.com uint32_t from; 1079717Sandreas.hansson@arm.com uint32_t to; 1089717Sandreas.hansson@arm.com double p; 1099717Sandreas.hansson@arm.com }; 1109717Sandreas.hansson@arm.com 1119717Sandreas.hansson@arm.com /** 1129241Sandreas.hansson@arm.com * The system used to determine which mode we are currently operating 1139241Sandreas.hansson@arm.com * in. 1149241Sandreas.hansson@arm.com */ 1159241Sandreas.hansson@arm.com System* system; 1169241Sandreas.hansson@arm.com 1179241Sandreas.hansson@arm.com /** 1189241Sandreas.hansson@arm.com * MasterID used in generated requests. 1199241Sandreas.hansson@arm.com */ 1209241Sandreas.hansson@arm.com MasterID masterID; 1219241Sandreas.hansson@arm.com 1229717Sandreas.hansson@arm.com /** Time of next transition */ 1239717Sandreas.hansson@arm.com Tick nextTransitionTick; 1249241Sandreas.hansson@arm.com 1259717Sandreas.hansson@arm.com /** State transition matrix */ 1269717Sandreas.hansson@arm.com std::vector<std::vector<double> > transitionMatrix; 1279241Sandreas.hansson@arm.com 1289717Sandreas.hansson@arm.com /** Index of the current state */ 1299717Sandreas.hansson@arm.com uint32_t currState; 1309241Sandreas.hansson@arm.com 1319717Sandreas.hansson@arm.com /** Map of generator states */ 1329717Sandreas.hansson@arm.com m5::hash_map<uint32_t, BaseGen*> states; 1339241Sandreas.hansson@arm.com 1349717Sandreas.hansson@arm.com /** Queued master port */ 1359241Sandreas.hansson@arm.com class TrafficGenPort : public QueuedMasterPort 1369241Sandreas.hansson@arm.com { 1379241Sandreas.hansson@arm.com public: 1389241Sandreas.hansson@arm.com 1399241Sandreas.hansson@arm.com TrafficGenPort(const std::string& name, TrafficGen& _owner) 1409557Sandreas.hansson@arm.com : QueuedMasterPort(name, &_owner, queue), queue(_owner, *this) 1419241Sandreas.hansson@arm.com { } 1429241Sandreas.hansson@arm.com 1439241Sandreas.hansson@arm.com protected: 1449241Sandreas.hansson@arm.com 1459241Sandreas.hansson@arm.com bool recvTimingResp(PacketPtr pkt); 1469241Sandreas.hansson@arm.com 1479241Sandreas.hansson@arm.com private: 1489241Sandreas.hansson@arm.com 1499241Sandreas.hansson@arm.com MasterPacketQueue queue; 1509241Sandreas.hansson@arm.com 1519241Sandreas.hansson@arm.com }; 1529241Sandreas.hansson@arm.com 1539717Sandreas.hansson@arm.com /** The instance of master port used by the traffic generator. */ 1549241Sandreas.hansson@arm.com TrafficGenPort port; 1559241Sandreas.hansson@arm.com 1569717Sandreas.hansson@arm.com /** Event for scheduling updates */ 1579717Sandreas.hansson@arm.com EventWrapper<TrafficGen, &TrafficGen::update> updateEvent; 1589241Sandreas.hansson@arm.com 1599241Sandreas.hansson@arm.com 1609241Sandreas.hansson@arm.com public: 1619241Sandreas.hansson@arm.com 1629241Sandreas.hansson@arm.com TrafficGen(const TrafficGenParams* p); 1639241Sandreas.hansson@arm.com 1649241Sandreas.hansson@arm.com ~TrafficGen() {} 1659241Sandreas.hansson@arm.com 1669294Sandreas.hansson@arm.com virtual BaseMasterPort& getMasterPort(const std::string &if_name, 1679294Sandreas.hansson@arm.com PortID idx = InvalidPortID); 1689241Sandreas.hansson@arm.com 1699241Sandreas.hansson@arm.com void init(); 1709241Sandreas.hansson@arm.com 1719241Sandreas.hansson@arm.com void initState(); 1729241Sandreas.hansson@arm.com 1739342SAndreas.Sandberg@arm.com unsigned int drain(DrainManager *dm); 1749241Sandreas.hansson@arm.com 1759241Sandreas.hansson@arm.com void serialize(std::ostream &os); 1769241Sandreas.hansson@arm.com 1779241Sandreas.hansson@arm.com void unserialize(Checkpoint* cp, const std::string& section); 1789241Sandreas.hansson@arm.com 1799241Sandreas.hansson@arm.com}; 1809241Sandreas.hansson@arm.com 1819666Sandreas.hansson@arm.com#endif //__CPU_TRAFFIC_GEN_TRAFFIC_GEN_HH__ 182