Sequencer.cc revision 6863
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 306845Sdrh5@cs.wisc.edu#include "mem/ruby/libruby.hh" 316154Snate@binkert.org#include "mem/ruby/common/Global.hh" 326154Snate@binkert.org#include "mem/ruby/system/Sequencer.hh" 336154Snate@binkert.org#include "mem/ruby/system/System.hh" 346154Snate@binkert.org#include "mem/protocol/Protocol.hh" 356154Snate@binkert.org#include "mem/ruby/profiler/Profiler.hh" 366154Snate@binkert.org#include "mem/ruby/system/CacheMemory.hh" 376285Snate@binkert.org#include "mem/protocol/CacheMsg.hh" 386285Snate@binkert.org#include "mem/ruby/recorder/Tracer.hh" 396154Snate@binkert.org#include "mem/ruby/common/SubBlock.hh" 406154Snate@binkert.org#include "mem/protocol/Protocol.hh" 416154Snate@binkert.org#include "mem/gems_common/Map.hh" 426285Snate@binkert.org#include "mem/ruby/buffers/MessageBuffer.hh" 436285Snate@binkert.org#include "mem/ruby/slicc_interface/AbstractController.hh" 446145Snate@binkert.org 456285Snate@binkert.org//Sequencer::Sequencer(int core_id, MessageBuffer* mandatory_q) 466145Snate@binkert.org 476355Spdudnik@gmail.com#define LLSC_FAIL -2 486850Spdudnik@gmail.comlong int already = 0; 496285Snate@binkert.orgSequencer::Sequencer(const string & name) 506285Snate@binkert.org :RubyPort(name) 516285Snate@binkert.org{ 526859Sdrh5@cs.wisc.edu m_store_waiting_on_load_cycles = 0; 536859Sdrh5@cs.wisc.edu m_store_waiting_on_store_cycles = 0; 546859Sdrh5@cs.wisc.edu m_load_waiting_on_store_cycles = 0; 556859Sdrh5@cs.wisc.edu m_load_waiting_on_load_cycles = 0; 566285Snate@binkert.org} 576285Snate@binkert.org 586285Snate@binkert.orgvoid Sequencer::init(const vector<string> & argv) 596285Snate@binkert.org{ 606145Snate@binkert.org m_deadlock_check_scheduled = false; 616145Snate@binkert.org m_outstanding_count = 0; 626145Snate@binkert.org 636285Snate@binkert.org m_max_outstanding_requests = 0; 646285Snate@binkert.org m_deadlock_threshold = 0; 656285Snate@binkert.org m_version = -1; 666285Snate@binkert.org m_instCache_ptr = NULL; 676285Snate@binkert.org m_dataCache_ptr = NULL; 686285Snate@binkert.org m_controller = NULL; 696285Snate@binkert.org for (size_t i=0; i<argv.size(); i+=2) { 706285Snate@binkert.org if ( argv[i] == "controller") { 716285Snate@binkert.org m_controller = RubySystem::getController(argv[i+1]); // args[i] = "L1Cache" 726285Snate@binkert.org m_mandatory_q_ptr = m_controller->getMandatoryQueue(); 736285Snate@binkert.org } else if ( argv[i] == "icache") 746285Snate@binkert.org m_instCache_ptr = RubySystem::getCache(argv[i+1]); 756285Snate@binkert.org else if ( argv[i] == "dcache") 766285Snate@binkert.org m_dataCache_ptr = RubySystem::getCache(argv[i+1]); 776285Snate@binkert.org else if ( argv[i] == "version") 786285Snate@binkert.org m_version = atoi(argv[i+1].c_str()); 796285Snate@binkert.org else if ( argv[i] == "max_outstanding_requests") 806285Snate@binkert.org m_max_outstanding_requests = atoi(argv[i+1].c_str()); 816285Snate@binkert.org else if ( argv[i] == "deadlock_threshold") 826285Snate@binkert.org m_deadlock_threshold = atoi(argv[i+1].c_str()); 836285Snate@binkert.org else { 846285Snate@binkert.org cerr << "WARNING: Sequencer: Unkown configuration parameter: " << argv[i] << endl; 856285Snate@binkert.org assert(false); 866285Snate@binkert.org } 876145Snate@binkert.org } 886285Snate@binkert.org assert(m_max_outstanding_requests > 0); 896285Snate@binkert.org assert(m_deadlock_threshold > 0); 906285Snate@binkert.org assert(m_version > -1); 916285Snate@binkert.org assert(m_instCache_ptr != NULL); 926285Snate@binkert.org assert(m_dataCache_ptr != NULL); 936285Snate@binkert.org assert(m_controller != NULL); 946145Snate@binkert.org} 956145Snate@binkert.org 966145Snate@binkert.orgSequencer::~Sequencer() { 976285Snate@binkert.org 986145Snate@binkert.org} 996145Snate@binkert.org 1006145Snate@binkert.orgvoid Sequencer::wakeup() { 1016145Snate@binkert.org // Check for deadlock of any of the requests 1026145Snate@binkert.org Time current_time = g_eventQueue_ptr->getTime(); 1036145Snate@binkert.org 1046145Snate@binkert.org // Check across all outstanding requests 1056145Snate@binkert.org int total_outstanding = 0; 1066285Snate@binkert.org 1076285Snate@binkert.org Vector<Address> keys = m_readRequestTable.keys(); 1086285Snate@binkert.org for (int i=0; i<keys.size(); i++) { 1096285Snate@binkert.org SequencerRequest* request = m_readRequestTable.lookup(keys[i]); 1106285Snate@binkert.org if (current_time - request->issue_time >= m_deadlock_threshold) { 1116285Snate@binkert.org WARN_MSG("Possible Deadlock detected"); 1126510Spdudnik@gmail.com WARN_EXPR(request); 1136285Snate@binkert.org WARN_EXPR(m_version); 1146825Spdudnik@gmail.com WARN_EXPR(request->ruby_request.paddr); 1156285Snate@binkert.org WARN_EXPR(keys.size()); 1166285Snate@binkert.org WARN_EXPR(current_time); 1176285Snate@binkert.org WARN_EXPR(request->issue_time); 1186285Snate@binkert.org WARN_EXPR(current_time - request->issue_time); 1196285Snate@binkert.org ERROR_MSG("Aborting"); 1206145Snate@binkert.org } 1216285Snate@binkert.org } 1226145Snate@binkert.org 1236285Snate@binkert.org keys = m_writeRequestTable.keys(); 1246285Snate@binkert.org for (int i=0; i<keys.size(); i++) { 1256285Snate@binkert.org SequencerRequest* request = m_writeRequestTable.lookup(keys[i]); 1266285Snate@binkert.org if (current_time - request->issue_time >= m_deadlock_threshold) { 1276285Snate@binkert.org WARN_MSG("Possible Deadlock detected"); 1286510Spdudnik@gmail.com WARN_EXPR(request); 1296285Snate@binkert.org WARN_EXPR(m_version); 1306285Snate@binkert.org WARN_EXPR(current_time); 1316285Snate@binkert.org WARN_EXPR(request->issue_time); 1326285Snate@binkert.org WARN_EXPR(current_time - request->issue_time); 1336285Snate@binkert.org WARN_EXPR(keys.size()); 1346285Snate@binkert.org ERROR_MSG("Aborting"); 1356145Snate@binkert.org } 1366285Snate@binkert.org } 1376285Snate@binkert.org total_outstanding += m_writeRequestTable.size() + m_readRequestTable.size(); 1386285Snate@binkert.org 1396145Snate@binkert.org assert(m_outstanding_count == total_outstanding); 1406145Snate@binkert.org 1416145Snate@binkert.org if (m_outstanding_count > 0) { // If there are still outstanding requests, keep checking 1426285Snate@binkert.org g_eventQueue_ptr->scheduleEvent(this, m_deadlock_threshold); 1436145Snate@binkert.org } else { 1446145Snate@binkert.org m_deadlock_check_scheduled = false; 1456145Snate@binkert.org } 1466145Snate@binkert.org} 1476145Snate@binkert.org 1486859Sdrh5@cs.wisc.eduvoid Sequencer::printStats(ostream & out) const { 1496859Sdrh5@cs.wisc.edu out << "Sequencer: " << m_name << endl; 1506859Sdrh5@cs.wisc.edu out << " store_waiting_on_load_cycles: " << m_store_waiting_on_load_cycles << endl; 1516859Sdrh5@cs.wisc.edu out << " store_waiting_on_store_cycles: " << m_store_waiting_on_store_cycles << endl; 1526859Sdrh5@cs.wisc.edu out << " load_waiting_on_load_cycles: " << m_load_waiting_on_load_cycles << endl; 1536859Sdrh5@cs.wisc.edu out << " load_waiting_on_store_cycles: " << m_load_waiting_on_store_cycles << endl; 1546859Sdrh5@cs.wisc.edu} 1556859Sdrh5@cs.wisc.edu 1566145Snate@binkert.orgvoid Sequencer::printProgress(ostream& out) const{ 1576285Snate@binkert.org /* 1586145Snate@binkert.org int total_demand = 0; 1596145Snate@binkert.org out << "Sequencer Stats Version " << m_version << endl; 1606145Snate@binkert.org out << "Current time = " << g_eventQueue_ptr->getTime() << endl; 1616145Snate@binkert.org out << "---------------" << endl; 1626145Snate@binkert.org out << "outstanding requests" << endl; 1636145Snate@binkert.org 1646285Snate@binkert.org Vector<Address> rkeys = m_readRequestTable.keys(); 1656285Snate@binkert.org int read_size = rkeys.size(); 1666285Snate@binkert.org out << "proc " << m_version << " Read Requests = " << read_size << endl; 1676285Snate@binkert.org // print the request table 1686285Snate@binkert.org for(int i=0; i < read_size; ++i){ 1696285Snate@binkert.org SequencerRequest * request = m_readRequestTable.lookup(rkeys[i]); 1706285Snate@binkert.org out << "\tRequest[ " << i << " ] = " << request->type << " Address " << rkeys[i] << " Posted " << request->issue_time << " PF " << PrefetchBit_No << endl; 1716285Snate@binkert.org total_demand++; 1726285Snate@binkert.org } 1736145Snate@binkert.org 1746285Snate@binkert.org Vector<Address> wkeys = m_writeRequestTable.keys(); 1756285Snate@binkert.org int write_size = wkeys.size(); 1766285Snate@binkert.org out << "proc " << m_version << " Write Requests = " << write_size << endl; 1776285Snate@binkert.org // print the request table 1786285Snate@binkert.org for(int i=0; i < write_size; ++i){ 1796285Snate@binkert.org CacheMsg & request = m_writeRequestTable.lookup(wkeys[i]); 1806145Snate@binkert.org out << "\tRequest[ " << i << " ] = " << request.getType() << " Address " << wkeys[i] << " Posted " << request.getTime() << " PF " << request.getPrefetch() << endl; 1816145Snate@binkert.org if( request.getPrefetch() == PrefetchBit_No ){ 1826145Snate@binkert.org total_demand++; 1836145Snate@binkert.org } 1846285Snate@binkert.org } 1856145Snate@binkert.org 1866285Snate@binkert.org out << endl; 1876285Snate@binkert.org 1886145Snate@binkert.org out << "Total Number Outstanding: " << m_outstanding_count << endl; 1896145Snate@binkert.org out << "Total Number Demand : " << total_demand << endl; 1906145Snate@binkert.org out << "Total Number Prefetches : " << m_outstanding_count - total_demand << endl; 1916145Snate@binkert.org out << endl; 1926145Snate@binkert.org out << endl; 1936285Snate@binkert.org */ 1946145Snate@binkert.org} 1956145Snate@binkert.org 1966285Snate@binkert.orgvoid Sequencer::printConfig(ostream& out) const { 1976285Snate@binkert.org out << "Seqeuncer config: " << m_name << endl; 1986285Snate@binkert.org out << " controller: " << m_controller->getName() << endl; 1996285Snate@binkert.org out << " version: " << m_version << endl; 2006285Snate@binkert.org out << " max_outstanding_requests: " << m_max_outstanding_requests << endl; 2016285Snate@binkert.org out << " deadlock_threshold: " << m_deadlock_threshold << endl; 2026145Snate@binkert.org} 2036145Snate@binkert.org 2046145Snate@binkert.org// Insert the request on the correct request table. Return true if 2056145Snate@binkert.org// the entry was already present. 2066285Snate@binkert.orgbool Sequencer::insertRequest(SequencerRequest* request) { 2076285Snate@binkert.org int total_outstanding = m_writeRequestTable.size() + m_readRequestTable.size(); 2086285Snate@binkert.org 2096145Snate@binkert.org assert(m_outstanding_count == total_outstanding); 2106145Snate@binkert.org 2116145Snate@binkert.org // See if we should schedule a deadlock check 2126145Snate@binkert.org if (m_deadlock_check_scheduled == false) { 2136285Snate@binkert.org g_eventQueue_ptr->scheduleEvent(this, m_deadlock_threshold); 2146145Snate@binkert.org m_deadlock_check_scheduled = true; 2156145Snate@binkert.org } 2166145Snate@binkert.org 2176285Snate@binkert.org Address line_addr(request->ruby_request.paddr); 2186285Snate@binkert.org line_addr.makeLineAddress(); 2196285Snate@binkert.org if ((request->ruby_request.type == RubyRequestType_ST) || 2206355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Read) || 2216355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Write) || 2226350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Read) || 2236350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Write)) { 2246285Snate@binkert.org if (m_writeRequestTable.exist(line_addr)) { 2256285Snate@binkert.org m_writeRequestTable.lookup(line_addr) = request; 2266285Snate@binkert.org // return true; 2276285Snate@binkert.org assert(0); // drh5: isn't this an error? do you lose the initial request? 2286145Snate@binkert.org } 2296285Snate@binkert.org m_writeRequestTable.allocate(line_addr); 2306285Snate@binkert.org m_writeRequestTable.lookup(line_addr) = request; 2316145Snate@binkert.org m_outstanding_count++; 2326145Snate@binkert.org } else { 2336285Snate@binkert.org if (m_readRequestTable.exist(line_addr)) { 2346285Snate@binkert.org m_readRequestTable.lookup(line_addr) = request; 2356285Snate@binkert.org // return true; 2366285Snate@binkert.org assert(0); // drh5: isn't this an error? do you lose the initial request? 2376145Snate@binkert.org } 2386285Snate@binkert.org m_readRequestTable.allocate(line_addr); 2396285Snate@binkert.org m_readRequestTable.lookup(line_addr) = request; 2406145Snate@binkert.org m_outstanding_count++; 2416145Snate@binkert.org } 2426145Snate@binkert.org 2436145Snate@binkert.org g_system_ptr->getProfiler()->sequencerRequests(m_outstanding_count); 2446145Snate@binkert.org 2456285Snate@binkert.org total_outstanding = m_writeRequestTable.size() + m_readRequestTable.size(); 2466285Snate@binkert.org assert(m_outstanding_count == total_outstanding); 2476145Snate@binkert.org 2486145Snate@binkert.org return false; 2496145Snate@binkert.org} 2506145Snate@binkert.org 2516285Snate@binkert.orgvoid Sequencer::removeRequest(SequencerRequest* srequest) { 2526145Snate@binkert.org 2536285Snate@binkert.org assert(m_outstanding_count == m_writeRequestTable.size() + m_readRequestTable.size()); 2546285Snate@binkert.org 2556285Snate@binkert.org const RubyRequest & ruby_request = srequest->ruby_request; 2566285Snate@binkert.org Address line_addr(ruby_request.paddr); 2576285Snate@binkert.org line_addr.makeLineAddress(); 2586285Snate@binkert.org if ((ruby_request.type == RubyRequestType_ST) || 2596355Spdudnik@gmail.com (ruby_request.type == RubyRequestType_RMW_Read) || 2606355Spdudnik@gmail.com (ruby_request.type == RubyRequestType_RMW_Write) || 2616350Spdudnik@gmail.com (ruby_request.type == RubyRequestType_Locked_Read) || 2626350Spdudnik@gmail.com (ruby_request.type == RubyRequestType_Locked_Write)) { 2636285Snate@binkert.org m_writeRequestTable.deallocate(line_addr); 2646145Snate@binkert.org } else { 2656285Snate@binkert.org m_readRequestTable.deallocate(line_addr); 2666145Snate@binkert.org } 2676145Snate@binkert.org m_outstanding_count--; 2686145Snate@binkert.org 2696285Snate@binkert.org assert(m_outstanding_count == m_writeRequestTable.size() + m_readRequestTable.size()); 2706145Snate@binkert.org} 2716145Snate@binkert.org 2726145Snate@binkert.orgvoid Sequencer::writeCallback(const Address& address, DataBlock& data) { 2736145Snate@binkert.org 2746145Snate@binkert.org assert(address == line_address(address)); 2756285Snate@binkert.org assert(m_writeRequestTable.exist(line_address(address))); 2766145Snate@binkert.org 2776285Snate@binkert.org SequencerRequest* request = m_writeRequestTable.lookup(address); 2786846Spdudnik@cs.wisc.edu 2796145Snate@binkert.org removeRequest(request); 2806145Snate@binkert.org 2816285Snate@binkert.org assert((request->ruby_request.type == RubyRequestType_ST) || 2826355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Read) || 2836355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Write) || 2846350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Read) || 2856350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Write)); 2866863Sdrh5@cs.wisc.edu 2876350Spdudnik@gmail.com if (request->ruby_request.type == RubyRequestType_Locked_Read) { 2886347Spdudnik@gmail.com m_dataCache_ptr->setLocked(address, m_version); 2896347Spdudnik@gmail.com } 2906506Spdudnik@gmail.com else if (request->ruby_request.type == RubyRequestType_RMW_Read) { 2916863Sdrh5@cs.wisc.edu m_controller->blockOnQueue(address, m_mandatory_q_ptr); 2926506Spdudnik@gmail.com } 2936506Spdudnik@gmail.com else if (request->ruby_request.type == RubyRequestType_RMW_Write) { 2946863Sdrh5@cs.wisc.edu m_controller->unblock(address); 2956506Spdudnik@gmail.com } 2966145Snate@binkert.org 2976285Snate@binkert.org hitCallback(request, data); 2986145Snate@binkert.org} 2996145Snate@binkert.org 3006145Snate@binkert.orgvoid Sequencer::readCallback(const Address& address, DataBlock& data) { 3016145Snate@binkert.org 3026285Snate@binkert.org assert(address == line_address(address)); 3036285Snate@binkert.org assert(m_readRequestTable.exist(line_address(address))); 3046145Snate@binkert.org 3056285Snate@binkert.org SequencerRequest* request = m_readRequestTable.lookup(address); 3066285Snate@binkert.org removeRequest(request); 3076285Snate@binkert.org 3086285Snate@binkert.org assert((request->ruby_request.type == RubyRequestType_LD) || 3096381Sdrh5@cs.wisc.edu (request->ruby_request.type == RubyRequestType_RMW_Read) || 3106285Snate@binkert.org (request->ruby_request.type == RubyRequestType_IFETCH)); 3116285Snate@binkert.org 3126285Snate@binkert.org hitCallback(request, data); 3136145Snate@binkert.org} 3146145Snate@binkert.org 3156285Snate@binkert.orgvoid Sequencer::hitCallback(SequencerRequest* srequest, DataBlock& data) { 3166285Snate@binkert.org const RubyRequest & ruby_request = srequest->ruby_request; 3176285Snate@binkert.org Address request_address(ruby_request.paddr); 3186285Snate@binkert.org Address request_line_address(ruby_request.paddr); 3196285Snate@binkert.org request_line_address.makeLineAddress(); 3206285Snate@binkert.org RubyRequestType type = ruby_request.type; 3216285Snate@binkert.org Time issued_time = srequest->issue_time; 3226145Snate@binkert.org 3236145Snate@binkert.org // Set this cache entry to the most recently used 3246285Snate@binkert.org if (type == RubyRequestType_IFETCH) { 3256285Snate@binkert.org if (m_instCache_ptr->isTagPresent(request_line_address) ) 3266285Snate@binkert.org m_instCache_ptr->setMRU(request_line_address); 3276145Snate@binkert.org } else { 3286285Snate@binkert.org if (m_dataCache_ptr->isTagPresent(request_line_address) ) 3296285Snate@binkert.org m_dataCache_ptr->setMRU(request_line_address); 3306145Snate@binkert.org } 3316145Snate@binkert.org 3326145Snate@binkert.org assert(g_eventQueue_ptr->getTime() >= issued_time); 3336145Snate@binkert.org Time miss_latency = g_eventQueue_ptr->getTime() - issued_time; 3346145Snate@binkert.org 3356285Snate@binkert.org // Profile the miss latency for all non-zero demand misses 3366285Snate@binkert.org if (miss_latency != 0) { 3376285Snate@binkert.org g_system_ptr->getProfiler()->missLatency(miss_latency, type); 3386285Snate@binkert.org 3396285Snate@binkert.org if (Debug::getProtocolTrace()) { 3406285Snate@binkert.org g_system_ptr->getProfiler()->profileTransition("Seq", m_version, Address(ruby_request.paddr), 3416285Snate@binkert.org "", "Done", "", int_to_string(miss_latency)+" cycles"); 3426285Snate@binkert.org } 3436285Snate@binkert.org } 3446285Snate@binkert.org /* 3456285Snate@binkert.org if (request.getPrefetch() == PrefetchBit_Yes) { 3466285Snate@binkert.org return; // Ignore the prefetch 3476285Snate@binkert.org } 3486285Snate@binkert.org */ 3496285Snate@binkert.org 3506285Snate@binkert.org // update the data 3516285Snate@binkert.org if (ruby_request.data != NULL) { 3526285Snate@binkert.org if ((type == RubyRequestType_LD) || 3536381Sdrh5@cs.wisc.edu (type == RubyRequestType_IFETCH) || 3546381Sdrh5@cs.wisc.edu (type == RubyRequestType_RMW_Read)) { 3556285Snate@binkert.org memcpy(ruby_request.data, data.getData(request_address.getOffset(), ruby_request.len), ruby_request.len); 3566285Snate@binkert.org } else { 3576285Snate@binkert.org data.setData(ruby_request.data, request_address.getOffset(), ruby_request.len); 3586285Snate@binkert.org } 3596145Snate@binkert.org } 3606145Snate@binkert.org 3616285Snate@binkert.org m_hit_callback(srequest->id); 3626285Snate@binkert.org delete srequest; 3636285Snate@binkert.org} 3646285Snate@binkert.org 3656285Snate@binkert.org// Returns true if the sequencer already has a load or store outstanding 3666845Sdrh5@cs.wisc.eduint Sequencer::isReady(const RubyRequest& request) { 3676859Sdrh5@cs.wisc.edu bool is_outstanding_store = m_writeRequestTable.exist(line_address(Address(request.paddr))); 3686859Sdrh5@cs.wisc.edu bool is_outstanding_load = m_readRequestTable.exist(line_address(Address(request.paddr))); 3696859Sdrh5@cs.wisc.edu if ( is_outstanding_store ) { 3706859Sdrh5@cs.wisc.edu if ((request.type == RubyRequestType_LD) || 3716859Sdrh5@cs.wisc.edu (request.type == RubyRequestType_IFETCH) || 3726859Sdrh5@cs.wisc.edu (request.type == RubyRequestType_RMW_Read)) { 3736859Sdrh5@cs.wisc.edu m_store_waiting_on_load_cycles++; 3746859Sdrh5@cs.wisc.edu } else { 3756859Sdrh5@cs.wisc.edu m_store_waiting_on_store_cycles++; 3766859Sdrh5@cs.wisc.edu } 3776859Sdrh5@cs.wisc.edu return LIBRUBY_ALIASED_REQUEST; 3786859Sdrh5@cs.wisc.edu } else if ( is_outstanding_load ) { 3796859Sdrh5@cs.wisc.edu if ((request.type == RubyRequestType_ST) || 3806859Sdrh5@cs.wisc.edu (request.type == RubyRequestType_RMW_Write) ) { 3816859Sdrh5@cs.wisc.edu m_load_waiting_on_store_cycles++; 3826859Sdrh5@cs.wisc.edu } else { 3836859Sdrh5@cs.wisc.edu m_load_waiting_on_load_cycles++; 3846859Sdrh5@cs.wisc.edu } 3856856Sdrh5@cs.wisc.edu return LIBRUBY_ALIASED_REQUEST; 3866145Snate@binkert.org } 3876145Snate@binkert.org 3886510Spdudnik@gmail.com if (m_outstanding_count >= m_max_outstanding_requests) { 3896845Sdrh5@cs.wisc.edu return LIBRUBY_BUFFER_FULL; 3906145Snate@binkert.org } 3916845Sdrh5@cs.wisc.edu 3926845Sdrh5@cs.wisc.edu return 1; 3936145Snate@binkert.org} 3946145Snate@binkert.org 3956285Snate@binkert.orgbool Sequencer::empty() const { 3966285Snate@binkert.org return (m_writeRequestTable.size() == 0) && (m_readRequestTable.size() == 0); 3976145Snate@binkert.org} 3986145Snate@binkert.org 3996349Spdudnik@gmail.com 4006285Snate@binkert.orgint64_t Sequencer::makeRequest(const RubyRequest & request) 4016285Snate@binkert.org{ 4026285Snate@binkert.org assert(Address(request.paddr).getOffset() + request.len <= RubySystem::getBlockSizeBytes()); 4036845Sdrh5@cs.wisc.edu int ready = isReady(request); 4046845Sdrh5@cs.wisc.edu if (ready > 0) { 4056285Snate@binkert.org int64_t id = makeUniqueRequestID(); 4066285Snate@binkert.org SequencerRequest *srequest = new SequencerRequest(request, id, g_eventQueue_ptr->getTime()); 4076285Snate@binkert.org bool found = insertRequest(srequest); 4086825Spdudnik@gmail.com if (!found) { 4096350Spdudnik@gmail.com if (request.type == RubyRequestType_Locked_Write) { 4106355Spdudnik@gmail.com // NOTE: it is OK to check the locked flag here as the mandatory queue will be checked first 4116355Spdudnik@gmail.com // ensuring that nothing comes between checking the flag and servicing the store 4126349Spdudnik@gmail.com if (!m_dataCache_ptr->isLocked(line_address(Address(request.paddr)), m_version)) { 4136355Spdudnik@gmail.com return LLSC_FAIL; 4146349Spdudnik@gmail.com } 4156349Spdudnik@gmail.com else { 4166349Spdudnik@gmail.com m_dataCache_ptr->clearLocked(line_address(Address(request.paddr))); 4176349Spdudnik@gmail.com } 4186349Spdudnik@gmail.com } 4196285Snate@binkert.org issueRequest(request); 4206145Snate@binkert.org 4216859Sdrh5@cs.wisc.edu // TODO: issue hardware prefetches here 4226859Sdrh5@cs.wisc.edu return id; 4236825Spdudnik@gmail.com } 4246825Spdudnik@gmail.com else { 4256825Spdudnik@gmail.com assert(0); 4266859Sdrh5@cs.wisc.edu return 0; 4276825Spdudnik@gmail.com } 4286859Sdrh5@cs.wisc.edu } else { 4296845Sdrh5@cs.wisc.edu return ready; 4306145Snate@binkert.org } 4316145Snate@binkert.org} 4326145Snate@binkert.org 4336285Snate@binkert.orgvoid Sequencer::issueRequest(const RubyRequest& request) { 4346285Snate@binkert.org 4356285Snate@binkert.org // TODO: get rid of CacheMsg, CacheRequestType, and AccessModeTYpe, & have SLICC use RubyRequest and subtypes natively 4366285Snate@binkert.org CacheRequestType ctype; 4376285Snate@binkert.org switch(request.type) { 4386285Snate@binkert.org case RubyRequestType_IFETCH: 4396285Snate@binkert.org ctype = CacheRequestType_IFETCH; 4406285Snate@binkert.org break; 4416285Snate@binkert.org case RubyRequestType_LD: 4426285Snate@binkert.org ctype = CacheRequestType_LD; 4436285Snate@binkert.org break; 4446285Snate@binkert.org case RubyRequestType_ST: 4456285Snate@binkert.org ctype = CacheRequestType_ST; 4466285Snate@binkert.org break; 4476350Spdudnik@gmail.com case RubyRequestType_Locked_Read: 4486350Spdudnik@gmail.com case RubyRequestType_Locked_Write: 4496846Spdudnik@cs.wisc.edu ctype = CacheRequestType_ATOMIC; 4506285Snate@binkert.org break; 4516355Spdudnik@gmail.com case RubyRequestType_RMW_Read: 4526355Spdudnik@gmail.com ctype = CacheRequestType_ATOMIC; 4536355Spdudnik@gmail.com break; 4546355Spdudnik@gmail.com case RubyRequestType_RMW_Write: 4556355Spdudnik@gmail.com ctype = CacheRequestType_ATOMIC; 4566355Spdudnik@gmail.com break; 4576285Snate@binkert.org default: 4586285Snate@binkert.org assert(0); 4596145Snate@binkert.org } 4606285Snate@binkert.org AccessModeType amtype; 4616285Snate@binkert.org switch(request.access_mode){ 4626285Snate@binkert.org case RubyAccessMode_User: 4636285Snate@binkert.org amtype = AccessModeType_UserMode; 4646285Snate@binkert.org break; 4656285Snate@binkert.org case RubyAccessMode_Supervisor: 4666285Snate@binkert.org amtype = AccessModeType_SupervisorMode; 4676285Snate@binkert.org break; 4686285Snate@binkert.org case RubyAccessMode_Device: 4696285Snate@binkert.org amtype = AccessModeType_UserMode; 4706285Snate@binkert.org break; 4716285Snate@binkert.org default: 4726285Snate@binkert.org assert(0); 4736285Snate@binkert.org } 4746285Snate@binkert.org Address line_addr(request.paddr); 4756285Snate@binkert.org line_addr.makeLineAddress(); 4766505Spdudnik@gmail.com CacheMsg msg(line_addr, Address(request.paddr), ctype, Address(request.pc), amtype, request.len, PrefetchBit_No, request.proc_id); 4776285Snate@binkert.org 4786285Snate@binkert.org if (Debug::getProtocolTrace()) { 4796285Snate@binkert.org g_system_ptr->getProfiler()->profileTransition("Seq", m_version, Address(request.paddr), 4806285Snate@binkert.org "", "Begin", "", RubyRequestType_to_string(request.type)); 4816285Snate@binkert.org } 4826285Snate@binkert.org 4836285Snate@binkert.org if (g_system_ptr->getTracer()->traceEnabled()) { 4846285Snate@binkert.org g_system_ptr->getTracer()->traceRequest(m_name, line_addr, Address(request.pc), 4856285Snate@binkert.org request.type, g_eventQueue_ptr->getTime()); 4866285Snate@binkert.org } 4876285Snate@binkert.org 4886285Snate@binkert.org Time latency = 0; // initialzed to an null value 4896285Snate@binkert.org 4906285Snate@binkert.org if (request.type == RubyRequestType_IFETCH) 4916285Snate@binkert.org latency = m_instCache_ptr->getLatency(); 4926285Snate@binkert.org else 4936285Snate@binkert.org latency = m_dataCache_ptr->getLatency(); 4946285Snate@binkert.org 4956285Snate@binkert.org // Send the message to the cache controller 4966285Snate@binkert.org assert(latency > 0); 4976285Snate@binkert.org 4986285Snate@binkert.org 4996285Snate@binkert.org m_mandatory_q_ptr->enqueue(msg, latency); 5006285Snate@binkert.org} 5016285Snate@binkert.org/* 5026285Snate@binkert.orgbool Sequencer::tryCacheAccess(const Address& addr, CacheRequestType type, 5036285Snate@binkert.org AccessModeType access_mode, 5046285Snate@binkert.org int size, DataBlock*& data_ptr) { 5056285Snate@binkert.org if (type == CacheRequestType_IFETCH) { 5066285Snate@binkert.org return m_instCache_ptr->tryCacheAccess(line_address(addr), type, data_ptr); 5076285Snate@binkert.org } else { 5086285Snate@binkert.org return m_dataCache_ptr->tryCacheAccess(line_address(addr), type, data_ptr); 5096145Snate@binkert.org } 5106145Snate@binkert.org} 5116285Snate@binkert.org*/ 5126145Snate@binkert.org 5136145Snate@binkert.orgvoid Sequencer::print(ostream& out) const { 5146285Snate@binkert.org out << "[Sequencer: " << m_version 5156145Snate@binkert.org << ", outstanding requests: " << m_outstanding_count; 5166145Snate@binkert.org 5176285Snate@binkert.org out << ", read request table: " << m_readRequestTable 5186285Snate@binkert.org << ", write request table: " << m_writeRequestTable; 5196145Snate@binkert.org out << "]"; 5206145Snate@binkert.org} 5216145Snate@binkert.org 5226145Snate@binkert.org// this can be called from setState whenever coherence permissions are upgraded 5236145Snate@binkert.org// when invoked, coherence violations will be checked for the given block 5246145Snate@binkert.orgvoid Sequencer::checkCoherence(const Address& addr) { 5256145Snate@binkert.org#ifdef CHECK_COHERENCE 5266145Snate@binkert.org g_system_ptr->checkGlobalCoherenceInvariant(addr); 5276145Snate@binkert.org#endif 5286145Snate@binkert.org} 5296145Snate@binkert.org 530