From 973d8b8b13b8e4ea178cafa95aaf6538699b8b15 Mon Sep 17 00:00:00 2001 From: Korey Sewell Date: Tue, 10 Feb 2009 15:49:29 -0800 Subject: InOrder: Import new inorder CPU model from MIPS. This model currently only works in MIPS_SE mode, so it will take some effort to clean it up and make it generally useful. Hopefully people are willing to help make that happen! --- src/cpu/inorder/resource_pool.cc | 364 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 364 insertions(+) create mode 100644 src/cpu/inorder/resource_pool.cc (limited to 'src/cpu/inorder/resource_pool.cc') diff --git a/src/cpu/inorder/resource_pool.cc b/src/cpu/inorder/resource_pool.cc new file mode 100644 index 000000000..94af68c7a --- /dev/null +++ b/src/cpu/inorder/resource_pool.cc @@ -0,0 +1,364 @@ +/* + * Copyright (c) 2007 MIPS Technologies, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Korey Sewell + * + */ + +#include "cpu/inorder/resource_pool.hh" +#include "cpu/inorder/resources/resource_list.hh" + +#include +#include + +using namespace std; +using namespace ThePipeline; + +ResourcePool::ResourcePool(InOrderCPU *_cpu, ThePipeline::Params *params) + : cpu(_cpu) +{ + //@todo: use this function to instantiate the resources in resource pool. This will help in the + //auto-generation of this pipeline model. + //ThePipeline::addResources(resources, memObjects); + + // Declare Resource Objects + // name - id - bandwidth - latency - CPU - Parameters + // -------------------------------------------------- + resources.push_back(new FetchSeqUnit("Fetch-Seq-Unit", FetchSeq, StageWidth * 2, 0, _cpu, params)); + + resources.push_back(new TLBUnit("I-TLB", ITLB, StageWidth, 0, _cpu, params)); + + memObjects.push_back(ICache); + resources.push_back(new CacheUnit("icache_port", ICache, StageWidth * MaxThreads, 0, _cpu, params)); + + resources.push_back(new DecodeUnit("Decode-Unit", Decode, StageWidth, 0, _cpu, params)); + + resources.push_back(new BranchPredictor("Branch-Predictor", BPred, StageWidth, 0, _cpu, params)); + + resources.push_back(new InstBuffer("Fetch-Buffer-T0", FetchBuff, 4, 0, _cpu, params)); + + resources.push_back(new UseDefUnit("RegFile-Manager", RegManager, StageWidth * MaxThreads, 0, _cpu, params)); + + resources.push_back(new AGENUnit("AGEN-Unit", AGEN, StageWidth, 0, _cpu, params)); + + resources.push_back(new ExecutionUnit("Execution-Unit", ExecUnit, StageWidth, 0, _cpu, params)); + + resources.push_back(new MultDivUnit("Mult-Div-Unit", MDU, 5, 0, _cpu, params)); + + resources.push_back(new TLBUnit("D-TLB", DTLB, StageWidth, 0, _cpu, params)); + + memObjects.push_back(DCache); + resources.push_back(new CacheUnit("dcache_port", DCache, StageWidth * MaxThreads, 0, _cpu, params)); + + resources.push_back(new GraduationUnit("Graduation-Unit", Grad, StageWidth * MaxThreads, 0, _cpu, params)); + + resources.push_back(new InstBuffer("Fetch-Buffer-T1", FetchBuff2, 4, 0, _cpu, params)); +} + +void +ResourcePool::init() +{ + for (int i=0; i < resources.size(); i++) { + DPRINTF(Resource, "Initializing resource: %s.\n", resources[i]->name()); + + resources[i]->init(); + } +} + +string +ResourcePool::name() +{ + return cpu->name() + ".ResourcePool"; +} + + +void +ResourcePool::regStats() +{ + DPRINTF(Resource, "Registering Stats Throughout Resource Pool.\n"); + + int num_resources = resources.size(); + + for (int idx = 0; idx < num_resources; idx++) { + resources[idx]->regStats(); + } +} + +Port * +ResourcePool::getPort(const std::string &if_name, int idx) +{ + DPRINTF(Resource, "Binding %s in Resource Pool.\n", if_name); + + for (int i = 0; i < memObjects.size(); i++) { + int obj_idx = memObjects[i]; + Port *port = resources[obj_idx]->getPort(if_name, idx); + if (port != NULL) { + DPRINTF(Resource, "%s set to resource %s(#%i) in Resource Pool.\n", if_name, + resources[obj_idx]->name(), obj_idx); + return port; + } + } + + return NULL; +} + +unsigned +ResourcePool::getPortIdx(const std::string &port_name) +{ + DPRINTF(Resource, "Finding Port Idx for %s.\n", port_name); + + for (int i = 0; i < memObjects.size(); i++) { + unsigned obj_idx = memObjects[i]; + Port *port = resources[obj_idx]->getPort(port_name, obj_idx); + if (port != NULL) { + DPRINTF(Resource, "Returning Port Idx %i for %s.\n", obj_idx, port_name); + return obj_idx; + } + } + + return 0; +} + +ResReqPtr +ResourcePool::request(int res_idx, DynInstPtr inst) +{ + //Make Sure This is a valid resource ID + assert(res_idx >= 0 && res_idx < resources.size()); + + return resources[res_idx]->request(inst); +} + +void +ResourcePool::squash(DynInstPtr inst, int res_idx, InstSeqNum done_seq_num, int tid) +{ + resources[res_idx]->squash(inst, ThePipeline::NumStages-1, done_seq_num, tid); +} + +int +ResourcePool::slotsAvail(int res_idx) +{ + return resources[res_idx]->slotsAvail(); +} + +int +ResourcePool::slotsInUse(int res_idx) +{ + return resources[res_idx]->slotsInUse(); +} + +void +ResourcePool::scheduleEvent(InOrderCPU::CPUEventType e_type, DynInstPtr inst, + int delay, int res_idx, int tid) +{ + assert(delay >= 0); + + ResPoolEvent *res_pool_event = new ResPoolEvent(this); + + switch (e_type) + { + case InOrderCPU::ActivateThread: + { + DPRINTF(Resource, "Scheduling Activate Thread Resource Pool Event for tick %i.\n", + curTick + delay); + res_pool_event->setEvent(e_type, + inst, + inst->squashingStage, + inst->bdelaySeqNum, + inst->readTid()); + mainEventQueue.schedule(res_pool_event, curTick + cpu->ticks(delay)); + + } + break; + + case InOrderCPU::SuspendThread: + case InOrderCPU::DeallocateThread: + { + DPRINTF(Resource, "Scheduling Deactivate Thread Resource Pool Event for tick %i.\n", + curTick + delay); + + res_pool_event->setEvent(e_type, + inst, + inst->squashingStage, + inst->bdelaySeqNum, + tid); + + mainEventQueue.schedule(res_pool_event, curTick + cpu->ticks(delay)); + + } + break; + + case ResourcePool::InstGraduated: + { + DPRINTF(Resource, "Scheduling Inst-Graduated Resource Pool Event for tick %i.\n", + curTick + delay); + + res_pool_event->setEvent(e_type, + inst, + inst->squashingStage, + inst->seqNum, + inst->readTid()); + mainEventQueue.schedule(res_pool_event, curTick + cpu->ticks(delay)); + + } + break; + + case ResourcePool::SquashAll: + { + DPRINTF(Resource, "Scheduling Squash Resource Pool Event for tick %i.\n", + curTick + delay); + res_pool_event->setEvent(e_type, + inst, + inst->squashingStage, + inst->bdelaySeqNum, + inst->readTid()); + mainEventQueue.schedule(res_pool_event, curTick + cpu->ticks(delay)); + + } + break; + + default: + DPRINTF(Resource, "Ignoring Unrecognized CPU Event Type #%i.\n", e_type); + ; // If Resource Pool doesnt recognize event, we ignore it. + } +} + +void +ResourcePool::unscheduleEvent(int res_idx, DynInstPtr inst) +{ + resources[res_idx]->unscheduleEvent(inst); +} + +void +ResourcePool::squashAll(DynInstPtr inst, int stage_num, InstSeqNum done_seq_num, unsigned tid) +{ + DPRINTF(Resource, "[tid:%i] Stage %i squashing all instructions above [sn:%i].\n", + stage_num, tid, done_seq_num); + + int num_resources = resources.size(); + + for (int idx = 0; idx < num_resources; idx++) { + resources[idx]->squash(inst, stage_num, done_seq_num, tid); + } +} + +void +ResourcePool::activateAll(unsigned tid) +{ + DPRINTF(Resource, "[tid:%i] Broadcasting Thread Activation to all resources.\n", + tid); + + int num_resources = resources.size(); + + for (int idx = 0; idx < num_resources; idx++) { + resources[idx]->activateThread(tid); + } +} + +void +ResourcePool::deactivateAll(unsigned tid) +{ + DPRINTF(Resource, "[tid:%i] Broadcasting Thread Deactivation to all resources.\n", + tid); + + int num_resources = resources.size(); + + for (int idx = 0; idx < num_resources; idx++) { + resources[idx]->deactivateThread(tid); + } +} + +void +ResourcePool::instGraduated(InstSeqNum seq_num,unsigned tid) +{ + DPRINTF(Resource, "[tid:%i] Broadcasting [sn:%i] graduation to all resources.\n", + tid, seq_num); + + int num_resources = resources.size(); + + for (int idx = 0; idx < num_resources; idx++) { + resources[idx]->instGraduated(seq_num, tid); + } +} + +ResourcePool::ResPoolEvent::ResPoolEvent(ResourcePool *_resPool) + : Event(CPU_Tick_Pri), + resPool(_resPool) +{ eventType = (InOrderCPU::CPUEventType) Default; } + +void +ResourcePool::ResPoolEvent::process() +{ + switch (eventType) + { + case InOrderCPU::ActivateThread: + resPool->activateAll(tid); + break; + + case InOrderCPU::SuspendThread: + case InOrderCPU::DeallocateThread: + resPool->deactivateAll(tid); + break; + + case ResourcePool::InstGraduated: + resPool->instGraduated(seqNum, tid); + break; + + case ResourcePool::SquashAll: + resPool->squashAll(inst, stageNum, seqNum, tid); + break; + + default: + fatal("Unrecognized Event Type"); + } + + resPool->cpu->cpuEventRemoveList.push(this); +} + + +const char * +ResourcePool::ResPoolEvent::description() +{ + return "Resource Pool event"; +} + +/** Schedule resource event, regardless of its current state. */ +void +ResourcePool::ResPoolEvent::scheduleEvent(int delay) +{ + if (squashed()) + mainEventQueue.reschedule(this,curTick + resPool->cpu->ticks(delay)); + else if (!scheduled()) + mainEventQueue.schedule(this,curTick + resPool->cpu->ticks(delay)); +} + +/** Unschedule resource event, regardless of its current state. */ +void +ResourcePool::ResPoolEvent::unscheduleEvent() +{ + if (scheduled()) + squash(); +} -- cgit v1.2.3