Sequencer.cc revision 6825
16145Snate@binkert.org 26145Snate@binkert.org/* 36145Snate@binkert.org * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 46145Snate@binkert.org * All rights reserved. 56145Snate@binkert.org * 66145Snate@binkert.org * Redistribution and use in source and binary forms, with or without 76145Snate@binkert.org * modification, are permitted provided that the following conditions are 86145Snate@binkert.org * met: redistributions of source code must retain the above copyright 96145Snate@binkert.org * notice, this list of conditions and the following disclaimer; 106145Snate@binkert.org * redistributions in binary form must reproduce the above copyright 116145Snate@binkert.org * notice, this list of conditions and the following disclaimer in the 126145Snate@binkert.org * documentation and/or other materials provided with the distribution; 136145Snate@binkert.org * neither the name of the copyright holders nor the names of its 146145Snate@binkert.org * contributors may be used to endorse or promote products derived from 156145Snate@binkert.org * this software without specific prior written permission. 166145Snate@binkert.org * 176145Snate@binkert.org * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 186145Snate@binkert.org * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 196145Snate@binkert.org * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 206145Snate@binkert.org * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 216145Snate@binkert.org * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 226145Snate@binkert.org * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 236145Snate@binkert.org * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 246145Snate@binkert.org * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 256145Snate@binkert.org * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 266145Snate@binkert.org * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 276145Snate@binkert.org * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 286145Snate@binkert.org */ 296145Snate@binkert.org 306154Snate@binkert.org#include "mem/ruby/common/Global.hh" 316154Snate@binkert.org#include "mem/ruby/system/Sequencer.hh" 326154Snate@binkert.org#include "mem/ruby/system/System.hh" 336154Snate@binkert.org#include "mem/protocol/Protocol.hh" 346154Snate@binkert.org#include "mem/ruby/profiler/Profiler.hh" 356154Snate@binkert.org#include "mem/ruby/system/CacheMemory.hh" 366285Snate@binkert.org#include "mem/protocol/CacheMsg.hh" 376285Snate@binkert.org#include "mem/ruby/recorder/Tracer.hh" 386154Snate@binkert.org#include "mem/ruby/common/SubBlock.hh" 396154Snate@binkert.org#include "mem/protocol/Protocol.hh" 406154Snate@binkert.org#include "mem/gems_common/Map.hh" 416285Snate@binkert.org#include "mem/ruby/buffers/MessageBuffer.hh" 426285Snate@binkert.org#include "mem/ruby/slicc_interface/AbstractController.hh" 436145Snate@binkert.org 446285Snate@binkert.org//Sequencer::Sequencer(int core_id, MessageBuffer* mandatory_q) 456145Snate@binkert.org 466355Spdudnik@gmail.com#define LLSC_FAIL -2 476355Spdudnik@gmail.com 486285Snate@binkert.orgSequencer::Sequencer(const string & name) 496285Snate@binkert.org :RubyPort(name) 506285Snate@binkert.org{ 516285Snate@binkert.org} 526285Snate@binkert.org 536285Snate@binkert.orgvoid Sequencer::init(const vector<string> & argv) 546285Snate@binkert.org{ 556145Snate@binkert.org m_deadlock_check_scheduled = false; 566145Snate@binkert.org m_outstanding_count = 0; 576145Snate@binkert.org 586285Snate@binkert.org m_max_outstanding_requests = 0; 596285Snate@binkert.org m_deadlock_threshold = 0; 606285Snate@binkert.org m_version = -1; 616285Snate@binkert.org m_instCache_ptr = NULL; 626285Snate@binkert.org m_dataCache_ptr = NULL; 636285Snate@binkert.org m_controller = NULL; 646825Spdudnik@gmail.com m_servicing_atomic = 200; 656505Spdudnik@gmail.com m_atomics_counter = 0; 666285Snate@binkert.org for (size_t i=0; i<argv.size(); i+=2) { 676285Snate@binkert.org if ( argv[i] == "controller") { 686285Snate@binkert.org m_controller = RubySystem::getController(argv[i+1]); // args[i] = "L1Cache" 696285Snate@binkert.org m_mandatory_q_ptr = m_controller->getMandatoryQueue(); 706285Snate@binkert.org } else if ( argv[i] == "icache") 716285Snate@binkert.org m_instCache_ptr = RubySystem::getCache(argv[i+1]); 726285Snate@binkert.org else if ( argv[i] == "dcache") 736285Snate@binkert.org m_dataCache_ptr = RubySystem::getCache(argv[i+1]); 746285Snate@binkert.org else if ( argv[i] == "version") 756285Snate@binkert.org m_version = atoi(argv[i+1].c_str()); 766285Snate@binkert.org else if ( argv[i] == "max_outstanding_requests") 776285Snate@binkert.org m_max_outstanding_requests = atoi(argv[i+1].c_str()); 786285Snate@binkert.org else if ( argv[i] == "deadlock_threshold") 796285Snate@binkert.org m_deadlock_threshold = atoi(argv[i+1].c_str()); 806285Snate@binkert.org else { 816285Snate@binkert.org cerr << "WARNING: Sequencer: Unkown configuration parameter: " << argv[i] << endl; 826285Snate@binkert.org assert(false); 836285Snate@binkert.org } 846145Snate@binkert.org } 856285Snate@binkert.org assert(m_max_outstanding_requests > 0); 866285Snate@binkert.org assert(m_deadlock_threshold > 0); 876285Snate@binkert.org assert(m_version > -1); 886285Snate@binkert.org assert(m_instCache_ptr != NULL); 896285Snate@binkert.org assert(m_dataCache_ptr != NULL); 906285Snate@binkert.org assert(m_controller != NULL); 916145Snate@binkert.org} 926145Snate@binkert.org 936145Snate@binkert.orgSequencer::~Sequencer() { 946285Snate@binkert.org 956145Snate@binkert.org} 966145Snate@binkert.org 976145Snate@binkert.orgvoid Sequencer::wakeup() { 986145Snate@binkert.org // Check for deadlock of any of the requests 996145Snate@binkert.org Time current_time = g_eventQueue_ptr->getTime(); 1006145Snate@binkert.org 1016145Snate@binkert.org // Check across all outstanding requests 1026145Snate@binkert.org int total_outstanding = 0; 1036285Snate@binkert.org 1046285Snate@binkert.org Vector<Address> keys = m_readRequestTable.keys(); 1056285Snate@binkert.org for (int i=0; i<keys.size(); i++) { 1066285Snate@binkert.org SequencerRequest* request = m_readRequestTable.lookup(keys[i]); 1076285Snate@binkert.org if (current_time - request->issue_time >= m_deadlock_threshold) { 1086285Snate@binkert.org WARN_MSG("Possible Deadlock detected"); 1096285Snate@binkert.org WARN_EXPR(request); 1106285Snate@binkert.org WARN_EXPR(m_version); 1116825Spdudnik@gmail.com WARN_EXPR(request->ruby_request.paddr); 1126285Snate@binkert.org WARN_EXPR(keys.size()); 1136285Snate@binkert.org WARN_EXPR(current_time); 1146285Snate@binkert.org WARN_EXPR(request->issue_time); 1156285Snate@binkert.org WARN_EXPR(current_time - request->issue_time); 1166285Snate@binkert.org ERROR_MSG("Aborting"); 1176145Snate@binkert.org } 1186285Snate@binkert.org } 1196145Snate@binkert.org 1206285Snate@binkert.org keys = m_writeRequestTable.keys(); 1216285Snate@binkert.org for (int i=0; i<keys.size(); i++) { 1226285Snate@binkert.org SequencerRequest* request = m_writeRequestTable.lookup(keys[i]); 1236285Snate@binkert.org if (current_time - request->issue_time >= m_deadlock_threshold) { 1246285Snate@binkert.org WARN_MSG("Possible Deadlock detected"); 1256285Snate@binkert.org WARN_EXPR(request); 1266285Snate@binkert.org WARN_EXPR(m_version); 1276285Snate@binkert.org WARN_EXPR(current_time); 1286285Snate@binkert.org WARN_EXPR(request->issue_time); 1296285Snate@binkert.org WARN_EXPR(current_time - request->issue_time); 1306285Snate@binkert.org WARN_EXPR(keys.size()); 1316285Snate@binkert.org ERROR_MSG("Aborting"); 1326145Snate@binkert.org } 1336285Snate@binkert.org } 1346285Snate@binkert.org total_outstanding += m_writeRequestTable.size() + m_readRequestTable.size(); 1356285Snate@binkert.org 1366145Snate@binkert.org assert(m_outstanding_count == total_outstanding); 1376145Snate@binkert.org 1386145Snate@binkert.org if (m_outstanding_count > 0) { // If there are still outstanding requests, keep checking 1396285Snate@binkert.org g_eventQueue_ptr->scheduleEvent(this, m_deadlock_threshold); 1406145Snate@binkert.org } else { 1416145Snate@binkert.org m_deadlock_check_scheduled = false; 1426145Snate@binkert.org } 1436145Snate@binkert.org} 1446145Snate@binkert.org 1456145Snate@binkert.orgvoid Sequencer::printProgress(ostream& out) const{ 1466285Snate@binkert.org /* 1476145Snate@binkert.org int total_demand = 0; 1486145Snate@binkert.org out << "Sequencer Stats Version " << m_version << endl; 1496145Snate@binkert.org out << "Current time = " << g_eventQueue_ptr->getTime() << endl; 1506145Snate@binkert.org out << "---------------" << endl; 1516145Snate@binkert.org out << "outstanding requests" << endl; 1526145Snate@binkert.org 1536285Snate@binkert.org Vector<Address> rkeys = m_readRequestTable.keys(); 1546285Snate@binkert.org int read_size = rkeys.size(); 1556285Snate@binkert.org out << "proc " << m_version << " Read Requests = " << read_size << endl; 1566285Snate@binkert.org // print the request table 1576285Snate@binkert.org for(int i=0; i < read_size; ++i){ 1586285Snate@binkert.org SequencerRequest * request = m_readRequestTable.lookup(rkeys[i]); 1596285Snate@binkert.org out << "\tRequest[ " << i << " ] = " << request->type << " Address " << rkeys[i] << " Posted " << request->issue_time << " PF " << PrefetchBit_No << endl; 1606285Snate@binkert.org total_demand++; 1616285Snate@binkert.org } 1626145Snate@binkert.org 1636285Snate@binkert.org Vector<Address> wkeys = m_writeRequestTable.keys(); 1646285Snate@binkert.org int write_size = wkeys.size(); 1656285Snate@binkert.org out << "proc " << m_version << " Write Requests = " << write_size << endl; 1666285Snate@binkert.org // print the request table 1676285Snate@binkert.org for(int i=0; i < write_size; ++i){ 1686285Snate@binkert.org CacheMsg & request = m_writeRequestTable.lookup(wkeys[i]); 1696145Snate@binkert.org out << "\tRequest[ " << i << " ] = " << request.getType() << " Address " << wkeys[i] << " Posted " << request.getTime() << " PF " << request.getPrefetch() << endl; 1706145Snate@binkert.org if( request.getPrefetch() == PrefetchBit_No ){ 1716145Snate@binkert.org total_demand++; 1726145Snate@binkert.org } 1736285Snate@binkert.org } 1746145Snate@binkert.org 1756285Snate@binkert.org out << endl; 1766285Snate@binkert.org 1776145Snate@binkert.org out << "Total Number Outstanding: " << m_outstanding_count << endl; 1786145Snate@binkert.org out << "Total Number Demand : " << total_demand << endl; 1796145Snate@binkert.org out << "Total Number Prefetches : " << m_outstanding_count - total_demand << endl; 1806145Snate@binkert.org out << endl; 1816145Snate@binkert.org out << endl; 1826285Snate@binkert.org */ 1836145Snate@binkert.org} 1846145Snate@binkert.org 1856285Snate@binkert.orgvoid Sequencer::printConfig(ostream& out) const { 1866285Snate@binkert.org out << "Seqeuncer config: " << m_name << endl; 1876285Snate@binkert.org out << " controller: " << m_controller->getName() << endl; 1886285Snate@binkert.org out << " version: " << m_version << endl; 1896285Snate@binkert.org out << " max_outstanding_requests: " << m_max_outstanding_requests << endl; 1906285Snate@binkert.org out << " deadlock_threshold: " << m_deadlock_threshold << endl; 1916145Snate@binkert.org} 1926145Snate@binkert.org 1936145Snate@binkert.org// Insert the request on the correct request table. Return true if 1946145Snate@binkert.org// the entry was already present. 1956285Snate@binkert.orgbool Sequencer::insertRequest(SequencerRequest* request) { 1966285Snate@binkert.org int total_outstanding = m_writeRequestTable.size() + m_readRequestTable.size(); 1976285Snate@binkert.org 1986145Snate@binkert.org assert(m_outstanding_count == total_outstanding); 1996145Snate@binkert.org 2006145Snate@binkert.org // See if we should schedule a deadlock check 2016145Snate@binkert.org if (m_deadlock_check_scheduled == false) { 2026285Snate@binkert.org g_eventQueue_ptr->scheduleEvent(this, m_deadlock_threshold); 2036145Snate@binkert.org m_deadlock_check_scheduled = true; 2046145Snate@binkert.org } 2056145Snate@binkert.org 2066285Snate@binkert.org Address line_addr(request->ruby_request.paddr); 2076285Snate@binkert.org line_addr.makeLineAddress(); 2086285Snate@binkert.org if ((request->ruby_request.type == RubyRequestType_ST) || 2096355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Read) || 2106355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Write) || 2116350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Read) || 2126350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Write)) { 2136285Snate@binkert.org if (m_writeRequestTable.exist(line_addr)) { 2146285Snate@binkert.org m_writeRequestTable.lookup(line_addr) = request; 2156285Snate@binkert.org // return true; 2166285Snate@binkert.org assert(0); // drh5: isn't this an error? do you lose the initial request? 2176145Snate@binkert.org } 2186285Snate@binkert.org m_writeRequestTable.allocate(line_addr); 2196285Snate@binkert.org m_writeRequestTable.lookup(line_addr) = request; 2206145Snate@binkert.org m_outstanding_count++; 2216145Snate@binkert.org } else { 2226285Snate@binkert.org if (m_readRequestTable.exist(line_addr)) { 2236285Snate@binkert.org m_readRequestTable.lookup(line_addr) = request; 2246285Snate@binkert.org // return true; 2256285Snate@binkert.org assert(0); // drh5: isn't this an error? do you lose the initial request? 2266145Snate@binkert.org } 2276285Snate@binkert.org m_readRequestTable.allocate(line_addr); 2286285Snate@binkert.org m_readRequestTable.lookup(line_addr) = request; 2296145Snate@binkert.org m_outstanding_count++; 2306145Snate@binkert.org } 2316145Snate@binkert.org 2326145Snate@binkert.org g_system_ptr->getProfiler()->sequencerRequests(m_outstanding_count); 2336145Snate@binkert.org 2346285Snate@binkert.org total_outstanding = m_writeRequestTable.size() + m_readRequestTable.size(); 2356285Snate@binkert.org assert(m_outstanding_count == total_outstanding); 2366145Snate@binkert.org 2376145Snate@binkert.org return false; 2386145Snate@binkert.org} 2396145Snate@binkert.org 2406285Snate@binkert.orgvoid Sequencer::removeRequest(SequencerRequest* srequest) { 2416145Snate@binkert.org 2426285Snate@binkert.org assert(m_outstanding_count == m_writeRequestTable.size() + m_readRequestTable.size()); 2436285Snate@binkert.org 2446285Snate@binkert.org const RubyRequest & ruby_request = srequest->ruby_request; 2456285Snate@binkert.org Address line_addr(ruby_request.paddr); 2466285Snate@binkert.org line_addr.makeLineAddress(); 2476285Snate@binkert.org if ((ruby_request.type == RubyRequestType_ST) || 2486355Spdudnik@gmail.com (ruby_request.type == RubyRequestType_RMW_Read) || 2496355Spdudnik@gmail.com (ruby_request.type == RubyRequestType_RMW_Write) || 2506350Spdudnik@gmail.com (ruby_request.type == RubyRequestType_Locked_Read) || 2516350Spdudnik@gmail.com (ruby_request.type == RubyRequestType_Locked_Write)) { 2526285Snate@binkert.org m_writeRequestTable.deallocate(line_addr); 2536145Snate@binkert.org } else { 2546285Snate@binkert.org m_readRequestTable.deallocate(line_addr); 2556145Snate@binkert.org } 2566145Snate@binkert.org m_outstanding_count--; 2576145Snate@binkert.org 2586285Snate@binkert.org assert(m_outstanding_count == m_writeRequestTable.size() + m_readRequestTable.size()); 2596145Snate@binkert.org} 2606145Snate@binkert.org 2616145Snate@binkert.orgvoid Sequencer::writeCallback(const Address& address, DataBlock& data) { 2626145Snate@binkert.org 2636145Snate@binkert.org assert(address == line_address(address)); 2646285Snate@binkert.org assert(m_writeRequestTable.exist(line_address(address))); 2656145Snate@binkert.org 2666285Snate@binkert.org SequencerRequest* request = m_writeRequestTable.lookup(address); 2676145Snate@binkert.org removeRequest(request); 2686145Snate@binkert.org 2696285Snate@binkert.org assert((request->ruby_request.type == RubyRequestType_ST) || 2706355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Read) || 2716355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Write) || 2726350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Read) || 2736350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Write)); 2746347Spdudnik@gmail.com // POLINA: the assumption is that atomics are only on data cache and not instruction cache 2756350Spdudnik@gmail.com if (request->ruby_request.type == RubyRequestType_Locked_Read) { 2766347Spdudnik@gmail.com m_dataCache_ptr->setLocked(address, m_version); 2776347Spdudnik@gmail.com } 2786506Spdudnik@gmail.com else if (request->ruby_request.type == RubyRequestType_RMW_Read) { 2796506Spdudnik@gmail.com m_controller->set_atomic(address); 2806506Spdudnik@gmail.com } 2816506Spdudnik@gmail.com else if (request->ruby_request.type == RubyRequestType_RMW_Write) { 2826506Spdudnik@gmail.com m_controller->clear_atomic(); 2836506Spdudnik@gmail.com } 2846145Snate@binkert.org 2856285Snate@binkert.org hitCallback(request, data); 2866145Snate@binkert.org} 2876145Snate@binkert.org 2886145Snate@binkert.orgvoid Sequencer::readCallback(const Address& address, DataBlock& data) { 2896145Snate@binkert.org 2906285Snate@binkert.org assert(address == line_address(address)); 2916285Snate@binkert.org assert(m_readRequestTable.exist(line_address(address))); 2926145Snate@binkert.org 2936285Snate@binkert.org SequencerRequest* request = m_readRequestTable.lookup(address); 2946285Snate@binkert.org removeRequest(request); 2956285Snate@binkert.org 2966285Snate@binkert.org assert((request->ruby_request.type == RubyRequestType_LD) || 2976381Sdrh5@cs.wisc.edu (request->ruby_request.type == RubyRequestType_RMW_Read) || 2986285Snate@binkert.org (request->ruby_request.type == RubyRequestType_IFETCH)); 2996285Snate@binkert.org 3006285Snate@binkert.org hitCallback(request, data); 3016145Snate@binkert.org} 3026145Snate@binkert.org 3036285Snate@binkert.orgvoid Sequencer::hitCallback(SequencerRequest* srequest, DataBlock& data) { 3046285Snate@binkert.org const RubyRequest & ruby_request = srequest->ruby_request; 3056285Snate@binkert.org Address request_address(ruby_request.paddr); 3066285Snate@binkert.org Address request_line_address(ruby_request.paddr); 3076285Snate@binkert.org request_line_address.makeLineAddress(); 3086285Snate@binkert.org RubyRequestType type = ruby_request.type; 3096285Snate@binkert.org Time issued_time = srequest->issue_time; 3106145Snate@binkert.org 3116145Snate@binkert.org // Set this cache entry to the most recently used 3126285Snate@binkert.org if (type == RubyRequestType_IFETCH) { 3136285Snate@binkert.org if (m_instCache_ptr->isTagPresent(request_line_address) ) 3146285Snate@binkert.org m_instCache_ptr->setMRU(request_line_address); 3156145Snate@binkert.org } else { 3166285Snate@binkert.org if (m_dataCache_ptr->isTagPresent(request_line_address) ) 3176285Snate@binkert.org m_dataCache_ptr->setMRU(request_line_address); 3186145Snate@binkert.org } 3196145Snate@binkert.org 3206145Snate@binkert.org assert(g_eventQueue_ptr->getTime() >= issued_time); 3216145Snate@binkert.org Time miss_latency = g_eventQueue_ptr->getTime() - issued_time; 3226145Snate@binkert.org 3236285Snate@binkert.org // Profile the miss latency for all non-zero demand misses 3246285Snate@binkert.org if (miss_latency != 0) { 3256285Snate@binkert.org g_system_ptr->getProfiler()->missLatency(miss_latency, type); 3266285Snate@binkert.org 3276285Snate@binkert.org if (Debug::getProtocolTrace()) { 3286285Snate@binkert.org g_system_ptr->getProfiler()->profileTransition("Seq", m_version, Address(ruby_request.paddr), 3296285Snate@binkert.org "", "Done", "", int_to_string(miss_latency)+" cycles"); 3306285Snate@binkert.org } 3316285Snate@binkert.org } 3326285Snate@binkert.org /* 3336285Snate@binkert.org if (request.getPrefetch() == PrefetchBit_Yes) { 3346285Snate@binkert.org return; // Ignore the prefetch 3356285Snate@binkert.org } 3366285Snate@binkert.org */ 3376285Snate@binkert.org 3386285Snate@binkert.org // update the data 3396285Snate@binkert.org if (ruby_request.data != NULL) { 3406285Snate@binkert.org if ((type == RubyRequestType_LD) || 3416381Sdrh5@cs.wisc.edu (type == RubyRequestType_IFETCH) || 3426381Sdrh5@cs.wisc.edu (type == RubyRequestType_RMW_Read)) { 3436285Snate@binkert.org memcpy(ruby_request.data, data.getData(request_address.getOffset(), ruby_request.len), ruby_request.len); 3446285Snate@binkert.org } else { 3456285Snate@binkert.org data.setData(ruby_request.data, request_address.getOffset(), ruby_request.len); 3466285Snate@binkert.org } 3476145Snate@binkert.org } 3486825Spdudnik@gmail.com if (type == RubyRequestType_RMW_Write) { 3496825Spdudnik@gmail.com if (m_servicing_atomic != ruby_request.proc_id) { 3506825Spdudnik@gmail.com assert(0); 3516825Spdudnik@gmail.com } 3526825Spdudnik@gmail.com assert(m_atomics_counter > 0); 3536825Spdudnik@gmail.com m_atomics_counter--; 3546825Spdudnik@gmail.com if (m_atomics_counter == 0) { 3556825Spdudnik@gmail.com m_servicing_atomic = 200; 3566825Spdudnik@gmail.com } 3576825Spdudnik@gmail.com } 3586285Snate@binkert.org m_hit_callback(srequest->id); 3596285Snate@binkert.org delete srequest; 3606285Snate@binkert.org} 3616285Snate@binkert.org 3626285Snate@binkert.org// Returns true if the sequencer already has a load or store outstanding 3636825Spdudnik@gmail.combool Sequencer::isReady(const RubyRequest& request, bool dont_set) { 3646285Snate@binkert.org // POLINA: check if we are currently flushing the write buffer, if so Ruby is returned as not ready 3656285Snate@binkert.org // to simulate stalling of the front-end 3666285Snate@binkert.org // Do we stall all the sequencers? If it is atomic instruction - yes! 3676285Snate@binkert.org if (m_outstanding_count >= m_max_outstanding_requests) { 3686285Snate@binkert.org return false; 3696145Snate@binkert.org } 3706145Snate@binkert.org 3716285Snate@binkert.org if( m_writeRequestTable.exist(line_address(Address(request.paddr))) || 3726285Snate@binkert.org m_readRequestTable.exist(line_address(Address(request.paddr))) ){ 3736285Snate@binkert.org //cout << "OUTSTANDING REQUEST EXISTS " << p << " VER " << m_version << endl; 3746145Snate@binkert.org //printProgress(cout); 3756145Snate@binkert.org return false; 3766145Snate@binkert.org } 3776145Snate@binkert.org 3786825Spdudnik@gmail.com assert(request.proc_id != 100); 3796825Spdudnik@gmail.com if (m_servicing_atomic != 200 && m_servicing_atomic != request.proc_id) { 3806505Spdudnik@gmail.com assert(m_atomics_counter > 0); 3816505Spdudnik@gmail.com return false; 3826505Spdudnik@gmail.com } 3836505Spdudnik@gmail.com else { 3846825Spdudnik@gmail.com if (!dont_set) { 3856825Spdudnik@gmail.com if (request.type == RubyRequestType_RMW_Read) { 3866825Spdudnik@gmail.com if (m_servicing_atomic == 200) { 3876825Spdudnik@gmail.com assert(m_atomics_counter == 0); 3886825Spdudnik@gmail.com m_servicing_atomic = request.proc_id; 3896825Spdudnik@gmail.com } 3906825Spdudnik@gmail.com else { 3916825Spdudnik@gmail.com assert(m_servicing_atomic == request.proc_id); 3926825Spdudnik@gmail.com } 3936825Spdudnik@gmail.com m_atomics_counter++; 3946505Spdudnik@gmail.com } 3956505Spdudnik@gmail.com else { 3966825Spdudnik@gmail.com if (m_servicing_atomic == request.proc_id) { 3976825Spdudnik@gmail.com if (request.type != RubyRequestType_RMW_Write) { 3986825Spdudnik@gmail.com m_servicing_atomic = 200; 3996825Spdudnik@gmail.com m_atomics_counter = 0; 4006825Spdudnik@gmail.com } 4016825Spdudnik@gmail.com } 4026505Spdudnik@gmail.com } 4036505Spdudnik@gmail.com } 4046505Spdudnik@gmail.com } 4056505Spdudnik@gmail.com 4066145Snate@binkert.org return true; 4076145Snate@binkert.org} 4086145Snate@binkert.org 4096285Snate@binkert.orgbool Sequencer::empty() const { 4106285Snate@binkert.org return (m_writeRequestTable.size() == 0) && (m_readRequestTable.size() == 0); 4116145Snate@binkert.org} 4126145Snate@binkert.org 4136349Spdudnik@gmail.com 4146285Snate@binkert.orgint64_t Sequencer::makeRequest(const RubyRequest & request) 4156285Snate@binkert.org{ 4166285Snate@binkert.org assert(Address(request.paddr).getOffset() + request.len <= RubySystem::getBlockSizeBytes()); 4176285Snate@binkert.org if (isReady(request)) { 4186285Snate@binkert.org int64_t id = makeUniqueRequestID(); 4196285Snate@binkert.org SequencerRequest *srequest = new SequencerRequest(request, id, g_eventQueue_ptr->getTime()); 4206285Snate@binkert.org bool found = insertRequest(srequest); 4216825Spdudnik@gmail.com if (!found) { 4226350Spdudnik@gmail.com if (request.type == RubyRequestType_Locked_Write) { 4236355Spdudnik@gmail.com // NOTE: it is OK to check the locked flag here as the mandatory queue will be checked first 4246355Spdudnik@gmail.com // ensuring that nothing comes between checking the flag and servicing the store 4256349Spdudnik@gmail.com if (!m_dataCache_ptr->isLocked(line_address(Address(request.paddr)), m_version)) { 4266355Spdudnik@gmail.com return LLSC_FAIL; 4276349Spdudnik@gmail.com } 4286349Spdudnik@gmail.com else { 4296349Spdudnik@gmail.com m_dataCache_ptr->clearLocked(line_address(Address(request.paddr))); 4306349Spdudnik@gmail.com } 4316349Spdudnik@gmail.com } 4326510Spdudnik@gmail.com if (request.type == RubyRequestType_RMW_Write) { 4336510Spdudnik@gmail.com m_controller->started_writes(); 4346510Spdudnik@gmail.com } 4356285Snate@binkert.org issueRequest(request); 4366145Snate@binkert.org 4376285Snate@binkert.org // TODO: issue hardware prefetches here 4386285Snate@binkert.org return id; 4396825Spdudnik@gmail.com } 4406825Spdudnik@gmail.com else { 4416825Spdudnik@gmail.com assert(0); 4426825Spdudnik@gmail.com } 4436145Snate@binkert.org } 4446285Snate@binkert.org else { 4456285Snate@binkert.org return -1; 4466145Snate@binkert.org } 4476145Snate@binkert.org} 4486145Snate@binkert.org 4496285Snate@binkert.orgvoid Sequencer::issueRequest(const RubyRequest& request) { 4506285Snate@binkert.org 4516285Snate@binkert.org // TODO: get rid of CacheMsg, CacheRequestType, and AccessModeTYpe, & have SLICC use RubyRequest and subtypes natively 4526285Snate@binkert.org CacheRequestType ctype; 4536285Snate@binkert.org switch(request.type) { 4546285Snate@binkert.org case RubyRequestType_IFETCH: 4556285Snate@binkert.org ctype = CacheRequestType_IFETCH; 4566285Snate@binkert.org break; 4576285Snate@binkert.org case RubyRequestType_LD: 4586285Snate@binkert.org ctype = CacheRequestType_LD; 4596285Snate@binkert.org break; 4606285Snate@binkert.org case RubyRequestType_ST: 4616285Snate@binkert.org ctype = CacheRequestType_ST; 4626285Snate@binkert.org break; 4636350Spdudnik@gmail.com case RubyRequestType_Locked_Read: 4646353Spdudnik@gmail.com ctype = CacheRequestType_ST; 4656347Spdudnik@gmail.com break; 4666350Spdudnik@gmail.com case RubyRequestType_Locked_Write: 4676353Spdudnik@gmail.com ctype = CacheRequestType_ST; 4686285Snate@binkert.org break; 4696355Spdudnik@gmail.com case RubyRequestType_RMW_Read: 4706355Spdudnik@gmail.com ctype = CacheRequestType_ATOMIC; 4716355Spdudnik@gmail.com break; 4726355Spdudnik@gmail.com case RubyRequestType_RMW_Write: 4736355Spdudnik@gmail.com ctype = CacheRequestType_ATOMIC; 4746355Spdudnik@gmail.com break; 4756285Snate@binkert.org default: 4766285Snate@binkert.org assert(0); 4776145Snate@binkert.org } 4786285Snate@binkert.org AccessModeType amtype; 4796285Snate@binkert.org switch(request.access_mode){ 4806285Snate@binkert.org case RubyAccessMode_User: 4816285Snate@binkert.org amtype = AccessModeType_UserMode; 4826285Snate@binkert.org break; 4836285Snate@binkert.org case RubyAccessMode_Supervisor: 4846285Snate@binkert.org amtype = AccessModeType_SupervisorMode; 4856285Snate@binkert.org break; 4866285Snate@binkert.org case RubyAccessMode_Device: 4876285Snate@binkert.org amtype = AccessModeType_UserMode; 4886285Snate@binkert.org break; 4896285Snate@binkert.org default: 4906285Snate@binkert.org assert(0); 4916285Snate@binkert.org } 4926285Snate@binkert.org Address line_addr(request.paddr); 4936285Snate@binkert.org line_addr.makeLineAddress(); 4946505Spdudnik@gmail.com CacheMsg msg(line_addr, Address(request.paddr), ctype, Address(request.pc), amtype, request.len, PrefetchBit_No, request.proc_id); 4956285Snate@binkert.org 4966285Snate@binkert.org if (Debug::getProtocolTrace()) { 4976285Snate@binkert.org g_system_ptr->getProfiler()->profileTransition("Seq", m_version, Address(request.paddr), 4986285Snate@binkert.org "", "Begin", "", RubyRequestType_to_string(request.type)); 4996285Snate@binkert.org } 5006285Snate@binkert.org 5016285Snate@binkert.org if (g_system_ptr->getTracer()->traceEnabled()) { 5026285Snate@binkert.org g_system_ptr->getTracer()->traceRequest(m_name, line_addr, Address(request.pc), 5036285Snate@binkert.org request.type, g_eventQueue_ptr->getTime()); 5046285Snate@binkert.org } 5056285Snate@binkert.org 5066285Snate@binkert.org Time latency = 0; // initialzed to an null value 5076285Snate@binkert.org 5086285Snate@binkert.org if (request.type == RubyRequestType_IFETCH) 5096285Snate@binkert.org latency = m_instCache_ptr->getLatency(); 5106285Snate@binkert.org else 5116285Snate@binkert.org latency = m_dataCache_ptr->getLatency(); 5126285Snate@binkert.org 5136285Snate@binkert.org // Send the message to the cache controller 5146285Snate@binkert.org assert(latency > 0); 5156285Snate@binkert.org 5166285Snate@binkert.org 5176285Snate@binkert.org m_mandatory_q_ptr->enqueue(msg, latency); 5186285Snate@binkert.org} 5196285Snate@binkert.org/* 5206285Snate@binkert.orgbool Sequencer::tryCacheAccess(const Address& addr, CacheRequestType type, 5216285Snate@binkert.org AccessModeType access_mode, 5226285Snate@binkert.org int size, DataBlock*& data_ptr) { 5236285Snate@binkert.org if (type == CacheRequestType_IFETCH) { 5246285Snate@binkert.org return m_instCache_ptr->tryCacheAccess(line_address(addr), type, data_ptr); 5256285Snate@binkert.org } else { 5266285Snate@binkert.org return m_dataCache_ptr->tryCacheAccess(line_address(addr), type, data_ptr); 5276145Snate@binkert.org } 5286145Snate@binkert.org} 5296285Snate@binkert.org*/ 5306145Snate@binkert.org 5316145Snate@binkert.orgvoid Sequencer::print(ostream& out) const { 5326285Snate@binkert.org out << "[Sequencer: " << m_version 5336145Snate@binkert.org << ", outstanding requests: " << m_outstanding_count; 5346145Snate@binkert.org 5356285Snate@binkert.org out << ", read request table: " << m_readRequestTable 5366285Snate@binkert.org << ", write request table: " << m_writeRequestTable; 5376145Snate@binkert.org out << "]"; 5386145Snate@binkert.org} 5396145Snate@binkert.org 5406145Snate@binkert.org// this can be called from setState whenever coherence permissions are upgraded 5416145Snate@binkert.org// when invoked, coherence violations will be checked for the given block 5426145Snate@binkert.orgvoid Sequencer::checkCoherence(const Address& addr) { 5436145Snate@binkert.org#ifdef CHECK_COHERENCE 5446145Snate@binkert.org g_system_ptr->checkGlobalCoherenceInvariant(addr); 5456145Snate@binkert.org#endif 5466145Snate@binkert.org} 5476145Snate@binkert.org 548