Sequencer.cc revision 6505
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; 646505Spdudnik@gmail.com m_servicing_atomic = -1; 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); 1116285Snate@binkert.org WARN_EXPR(keys.size()); 1126285Snate@binkert.org WARN_EXPR(current_time); 1136285Snate@binkert.org WARN_EXPR(request->issue_time); 1146285Snate@binkert.org WARN_EXPR(current_time - request->issue_time); 1156285Snate@binkert.org ERROR_MSG("Aborting"); 1166145Snate@binkert.org } 1176285Snate@binkert.org } 1186145Snate@binkert.org 1196285Snate@binkert.org keys = m_writeRequestTable.keys(); 1206285Snate@binkert.org for (int i=0; i<keys.size(); i++) { 1216285Snate@binkert.org SequencerRequest* request = m_writeRequestTable.lookup(keys[i]); 1226285Snate@binkert.org if (current_time - request->issue_time >= m_deadlock_threshold) { 1236285Snate@binkert.org WARN_MSG("Possible Deadlock detected"); 1246285Snate@binkert.org WARN_EXPR(request); 1256285Snate@binkert.org WARN_EXPR(m_version); 1266285Snate@binkert.org WARN_EXPR(current_time); 1276285Snate@binkert.org WARN_EXPR(request->issue_time); 1286285Snate@binkert.org WARN_EXPR(current_time - request->issue_time); 1296285Snate@binkert.org WARN_EXPR(keys.size()); 1306285Snate@binkert.org ERROR_MSG("Aborting"); 1316145Snate@binkert.org } 1326285Snate@binkert.org } 1336285Snate@binkert.org total_outstanding += m_writeRequestTable.size() + m_readRequestTable.size(); 1346285Snate@binkert.org 1356145Snate@binkert.org assert(m_outstanding_count == total_outstanding); 1366145Snate@binkert.org 1376145Snate@binkert.org if (m_outstanding_count > 0) { // If there are still outstanding requests, keep checking 1386285Snate@binkert.org g_eventQueue_ptr->scheduleEvent(this, m_deadlock_threshold); 1396145Snate@binkert.org } else { 1406145Snate@binkert.org m_deadlock_check_scheduled = false; 1416145Snate@binkert.org } 1426145Snate@binkert.org} 1436145Snate@binkert.org 1446145Snate@binkert.orgvoid Sequencer::printProgress(ostream& out) const{ 1456285Snate@binkert.org /* 1466145Snate@binkert.org int total_demand = 0; 1476145Snate@binkert.org out << "Sequencer Stats Version " << m_version << endl; 1486145Snate@binkert.org out << "Current time = " << g_eventQueue_ptr->getTime() << endl; 1496145Snate@binkert.org out << "---------------" << endl; 1506145Snate@binkert.org out << "outstanding requests" << endl; 1516145Snate@binkert.org 1526285Snate@binkert.org Vector<Address> rkeys = m_readRequestTable.keys(); 1536285Snate@binkert.org int read_size = rkeys.size(); 1546285Snate@binkert.org out << "proc " << m_version << " Read Requests = " << read_size << endl; 1556285Snate@binkert.org // print the request table 1566285Snate@binkert.org for(int i=0; i < read_size; ++i){ 1576285Snate@binkert.org SequencerRequest * request = m_readRequestTable.lookup(rkeys[i]); 1586285Snate@binkert.org out << "\tRequest[ " << i << " ] = " << request->type << " Address " << rkeys[i] << " Posted " << request->issue_time << " PF " << PrefetchBit_No << endl; 1596285Snate@binkert.org total_demand++; 1606285Snate@binkert.org } 1616145Snate@binkert.org 1626285Snate@binkert.org Vector<Address> wkeys = m_writeRequestTable.keys(); 1636285Snate@binkert.org int write_size = wkeys.size(); 1646285Snate@binkert.org out << "proc " << m_version << " Write Requests = " << write_size << endl; 1656285Snate@binkert.org // print the request table 1666285Snate@binkert.org for(int i=0; i < write_size; ++i){ 1676285Snate@binkert.org CacheMsg & request = m_writeRequestTable.lookup(wkeys[i]); 1686145Snate@binkert.org out << "\tRequest[ " << i << " ] = " << request.getType() << " Address " << wkeys[i] << " Posted " << request.getTime() << " PF " << request.getPrefetch() << endl; 1696145Snate@binkert.org if( request.getPrefetch() == PrefetchBit_No ){ 1706145Snate@binkert.org total_demand++; 1716145Snate@binkert.org } 1726285Snate@binkert.org } 1736145Snate@binkert.org 1746285Snate@binkert.org out << endl; 1756285Snate@binkert.org 1766145Snate@binkert.org out << "Total Number Outstanding: " << m_outstanding_count << endl; 1776145Snate@binkert.org out << "Total Number Demand : " << total_demand << endl; 1786145Snate@binkert.org out << "Total Number Prefetches : " << m_outstanding_count - total_demand << endl; 1796145Snate@binkert.org out << endl; 1806145Snate@binkert.org out << endl; 1816285Snate@binkert.org */ 1826145Snate@binkert.org} 1836145Snate@binkert.org 1846285Snate@binkert.orgvoid Sequencer::printConfig(ostream& out) const { 1856285Snate@binkert.org out << "Seqeuncer config: " << m_name << endl; 1866285Snate@binkert.org out << " controller: " << m_controller->getName() << endl; 1876285Snate@binkert.org out << " version: " << m_version << endl; 1886285Snate@binkert.org out << " max_outstanding_requests: " << m_max_outstanding_requests << endl; 1896285Snate@binkert.org out << " deadlock_threshold: " << m_deadlock_threshold << endl; 1906145Snate@binkert.org} 1916145Snate@binkert.org 1926145Snate@binkert.org// Insert the request on the correct request table. Return true if 1936145Snate@binkert.org// the entry was already present. 1946285Snate@binkert.orgbool Sequencer::insertRequest(SequencerRequest* request) { 1956285Snate@binkert.org int total_outstanding = m_writeRequestTable.size() + m_readRequestTable.size(); 1966285Snate@binkert.org 1976145Snate@binkert.org assert(m_outstanding_count == total_outstanding); 1986145Snate@binkert.org 1996145Snate@binkert.org // See if we should schedule a deadlock check 2006145Snate@binkert.org if (m_deadlock_check_scheduled == false) { 2016285Snate@binkert.org g_eventQueue_ptr->scheduleEvent(this, m_deadlock_threshold); 2026145Snate@binkert.org m_deadlock_check_scheduled = true; 2036145Snate@binkert.org } 2046145Snate@binkert.org 2056285Snate@binkert.org Address line_addr(request->ruby_request.paddr); 2066285Snate@binkert.org line_addr.makeLineAddress(); 2076285Snate@binkert.org if ((request->ruby_request.type == RubyRequestType_ST) || 2086355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Read) || 2096355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Write) || 2106350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Read) || 2116350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Write)) { 2126285Snate@binkert.org if (m_writeRequestTable.exist(line_addr)) { 2136285Snate@binkert.org m_writeRequestTable.lookup(line_addr) = request; 2146285Snate@binkert.org // return true; 2156285Snate@binkert.org assert(0); // drh5: isn't this an error? do you lose the initial request? 2166145Snate@binkert.org } 2176285Snate@binkert.org m_writeRequestTable.allocate(line_addr); 2186285Snate@binkert.org m_writeRequestTable.lookup(line_addr) = request; 2196145Snate@binkert.org m_outstanding_count++; 2206145Snate@binkert.org } else { 2216285Snate@binkert.org if (m_readRequestTable.exist(line_addr)) { 2226285Snate@binkert.org m_readRequestTable.lookup(line_addr) = request; 2236285Snate@binkert.org // return true; 2246285Snate@binkert.org assert(0); // drh5: isn't this an error? do you lose the initial request? 2256145Snate@binkert.org } 2266285Snate@binkert.org m_readRequestTable.allocate(line_addr); 2276285Snate@binkert.org m_readRequestTable.lookup(line_addr) = request; 2286145Snate@binkert.org m_outstanding_count++; 2296145Snate@binkert.org } 2306145Snate@binkert.org 2316145Snate@binkert.org g_system_ptr->getProfiler()->sequencerRequests(m_outstanding_count); 2326145Snate@binkert.org 2336285Snate@binkert.org total_outstanding = m_writeRequestTable.size() + m_readRequestTable.size(); 2346285Snate@binkert.org assert(m_outstanding_count == total_outstanding); 2356145Snate@binkert.org 2366145Snate@binkert.org return false; 2376145Snate@binkert.org} 2386145Snate@binkert.org 2396285Snate@binkert.orgvoid Sequencer::removeRequest(SequencerRequest* srequest) { 2406145Snate@binkert.org 2416285Snate@binkert.org assert(m_outstanding_count == m_writeRequestTable.size() + m_readRequestTable.size()); 2426285Snate@binkert.org 2436285Snate@binkert.org const RubyRequest & ruby_request = srequest->ruby_request; 2446285Snate@binkert.org Address line_addr(ruby_request.paddr); 2456285Snate@binkert.org line_addr.makeLineAddress(); 2466285Snate@binkert.org if ((ruby_request.type == RubyRequestType_ST) || 2476355Spdudnik@gmail.com (ruby_request.type == RubyRequestType_RMW_Read) || 2486355Spdudnik@gmail.com (ruby_request.type == RubyRequestType_RMW_Write) || 2496350Spdudnik@gmail.com (ruby_request.type == RubyRequestType_Locked_Read) || 2506350Spdudnik@gmail.com (ruby_request.type == RubyRequestType_Locked_Write)) { 2516285Snate@binkert.org m_writeRequestTable.deallocate(line_addr); 2526145Snate@binkert.org } else { 2536285Snate@binkert.org m_readRequestTable.deallocate(line_addr); 2546145Snate@binkert.org } 2556145Snate@binkert.org m_outstanding_count--; 2566145Snate@binkert.org 2576285Snate@binkert.org assert(m_outstanding_count == m_writeRequestTable.size() + m_readRequestTable.size()); 2586145Snate@binkert.org} 2596145Snate@binkert.org 2606145Snate@binkert.orgvoid Sequencer::writeCallback(const Address& address, DataBlock& data) { 2616145Snate@binkert.org 2626145Snate@binkert.org assert(address == line_address(address)); 2636285Snate@binkert.org assert(m_writeRequestTable.exist(line_address(address))); 2646145Snate@binkert.org 2656285Snate@binkert.org SequencerRequest* request = m_writeRequestTable.lookup(address); 2666145Snate@binkert.org removeRequest(request); 2676145Snate@binkert.org 2686285Snate@binkert.org assert((request->ruby_request.type == RubyRequestType_ST) || 2696355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Read) || 2706355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Write) || 2716350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Read) || 2726350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Write)); 2736347Spdudnik@gmail.com // POLINA: the assumption is that atomics are only on data cache and not instruction cache 2746350Spdudnik@gmail.com if (request->ruby_request.type == RubyRequestType_Locked_Read) { 2756347Spdudnik@gmail.com m_dataCache_ptr->setLocked(address, m_version); 2766347Spdudnik@gmail.com } 2776145Snate@binkert.org 2786285Snate@binkert.org hitCallback(request, data); 2796145Snate@binkert.org} 2806145Snate@binkert.org 2816145Snate@binkert.orgvoid Sequencer::readCallback(const Address& address, DataBlock& data) { 2826145Snate@binkert.org 2836285Snate@binkert.org assert(address == line_address(address)); 2846285Snate@binkert.org assert(m_readRequestTable.exist(line_address(address))); 2856145Snate@binkert.org 2866285Snate@binkert.org SequencerRequest* request = m_readRequestTable.lookup(address); 2876285Snate@binkert.org removeRequest(request); 2886285Snate@binkert.org 2896285Snate@binkert.org assert((request->ruby_request.type == RubyRequestType_LD) || 2906381Sdrh5@cs.wisc.edu (request->ruby_request.type == RubyRequestType_RMW_Read) || 2916285Snate@binkert.org (request->ruby_request.type == RubyRequestType_IFETCH)); 2926285Snate@binkert.org 2936285Snate@binkert.org hitCallback(request, data); 2946145Snate@binkert.org} 2956145Snate@binkert.org 2966285Snate@binkert.orgvoid Sequencer::hitCallback(SequencerRequest* srequest, DataBlock& data) { 2976285Snate@binkert.org const RubyRequest & ruby_request = srequest->ruby_request; 2986285Snate@binkert.org Address request_address(ruby_request.paddr); 2996285Snate@binkert.org Address request_line_address(ruby_request.paddr); 3006285Snate@binkert.org request_line_address.makeLineAddress(); 3016285Snate@binkert.org RubyRequestType type = ruby_request.type; 3026285Snate@binkert.org Time issued_time = srequest->issue_time; 3036145Snate@binkert.org 3046145Snate@binkert.org // Set this cache entry to the most recently used 3056285Snate@binkert.org if (type == RubyRequestType_IFETCH) { 3066285Snate@binkert.org if (m_instCache_ptr->isTagPresent(request_line_address) ) 3076285Snate@binkert.org m_instCache_ptr->setMRU(request_line_address); 3086145Snate@binkert.org } else { 3096285Snate@binkert.org if (m_dataCache_ptr->isTagPresent(request_line_address) ) 3106285Snate@binkert.org m_dataCache_ptr->setMRU(request_line_address); 3116145Snate@binkert.org } 3126145Snate@binkert.org 3136145Snate@binkert.org assert(g_eventQueue_ptr->getTime() >= issued_time); 3146145Snate@binkert.org Time miss_latency = g_eventQueue_ptr->getTime() - issued_time; 3156145Snate@binkert.org 3166285Snate@binkert.org // Profile the miss latency for all non-zero demand misses 3176285Snate@binkert.org if (miss_latency != 0) { 3186285Snate@binkert.org g_system_ptr->getProfiler()->missLatency(miss_latency, type); 3196285Snate@binkert.org 3206285Snate@binkert.org if (Debug::getProtocolTrace()) { 3216285Snate@binkert.org g_system_ptr->getProfiler()->profileTransition("Seq", m_version, Address(ruby_request.paddr), 3226285Snate@binkert.org "", "Done", "", int_to_string(miss_latency)+" cycles"); 3236285Snate@binkert.org } 3246285Snate@binkert.org } 3256285Snate@binkert.org /* 3266285Snate@binkert.org if (request.getPrefetch() == PrefetchBit_Yes) { 3276285Snate@binkert.org return; // Ignore the prefetch 3286285Snate@binkert.org } 3296285Snate@binkert.org */ 3306285Snate@binkert.org 3316285Snate@binkert.org // update the data 3326285Snate@binkert.org if (ruby_request.data != NULL) { 3336285Snate@binkert.org if ((type == RubyRequestType_LD) || 3346381Sdrh5@cs.wisc.edu (type == RubyRequestType_IFETCH) || 3356381Sdrh5@cs.wisc.edu (type == RubyRequestType_RMW_Read)) { 3366285Snate@binkert.org memcpy(ruby_request.data, data.getData(request_address.getOffset(), ruby_request.len), ruby_request.len); 3376285Snate@binkert.org } else { 3386285Snate@binkert.org data.setData(ruby_request.data, request_address.getOffset(), ruby_request.len); 3396285Snate@binkert.org } 3406145Snate@binkert.org } 3416145Snate@binkert.org 3426285Snate@binkert.org m_hit_callback(srequest->id); 3436285Snate@binkert.org delete srequest; 3446285Snate@binkert.org} 3456285Snate@binkert.org 3466285Snate@binkert.org// Returns true if the sequencer already has a load or store outstanding 3476505Spdudnik@gmail.combool Sequencer::isReady(const RubyRequest& request) { 3486285Snate@binkert.org // POLINA: check if we are currently flushing the write buffer, if so Ruby is returned as not ready 3496285Snate@binkert.org // to simulate stalling of the front-end 3506285Snate@binkert.org // Do we stall all the sequencers? If it is atomic instruction - yes! 3516285Snate@binkert.org if (m_outstanding_count >= m_max_outstanding_requests) { 3526285Snate@binkert.org return false; 3536145Snate@binkert.org } 3546145Snate@binkert.org 3556285Snate@binkert.org if( m_writeRequestTable.exist(line_address(Address(request.paddr))) || 3566285Snate@binkert.org m_readRequestTable.exist(line_address(Address(request.paddr))) ){ 3576285Snate@binkert.org //cout << "OUTSTANDING REQUEST EXISTS " << p << " VER " << m_version << endl; 3586145Snate@binkert.org //printProgress(cout); 3596145Snate@binkert.org return false; 3606145Snate@binkert.org } 3616145Snate@binkert.org 3626505Spdudnik@gmail.com if (m_servicing_atomic != -1 && m_servicing_atomic != (int)request.proc_id) { 3636505Spdudnik@gmail.com assert(m_atomics_counter > 0); 3646505Spdudnik@gmail.com return false; 3656505Spdudnik@gmail.com } 3666505Spdudnik@gmail.com else { 3676505Spdudnik@gmail.com if (request.type == RubyRequestType_RMW_Read) { 3686505Spdudnik@gmail.com if (m_servicing_atomic == -1) { 3696505Spdudnik@gmail.com assert(m_atomics_counter == 0); 3706505Spdudnik@gmail.com m_servicing_atomic = (int)request.proc_id; 3716505Spdudnik@gmail.com } 3726505Spdudnik@gmail.com else { 3736505Spdudnik@gmail.com assert(m_servicing_atomic == (int)request.proc_id); 3746505Spdudnik@gmail.com } 3756505Spdudnik@gmail.com m_atomics_counter++; 3766505Spdudnik@gmail.com } 3776505Spdudnik@gmail.com else if (request.type == RubyRequestType_RMW_Write) { 3786505Spdudnik@gmail.com assert(m_servicing_atomic == (int)request.proc_id); 3796505Spdudnik@gmail.com assert(m_atomics_counter > 0); 3806505Spdudnik@gmail.com m_atomics_counter--; 3816505Spdudnik@gmail.com if (m_atomics_counter == 0) { 3826505Spdudnik@gmail.com m_servicing_atomic = -1; 3836505Spdudnik@gmail.com } 3846505Spdudnik@gmail.com } 3856505Spdudnik@gmail.com } 3866505Spdudnik@gmail.com 3876145Snate@binkert.org return true; 3886145Snate@binkert.org} 3896145Snate@binkert.org 3906285Snate@binkert.orgbool Sequencer::empty() const { 3916285Snate@binkert.org return (m_writeRequestTable.size() == 0) && (m_readRequestTable.size() == 0); 3926145Snate@binkert.org} 3936145Snate@binkert.org 3946349Spdudnik@gmail.com 3956285Snate@binkert.orgint64_t Sequencer::makeRequest(const RubyRequest & request) 3966285Snate@binkert.org{ 3976285Snate@binkert.org assert(Address(request.paddr).getOffset() + request.len <= RubySystem::getBlockSizeBytes()); 3986285Snate@binkert.org if (isReady(request)) { 3996285Snate@binkert.org int64_t id = makeUniqueRequestID(); 4006285Snate@binkert.org SequencerRequest *srequest = new SequencerRequest(request, id, g_eventQueue_ptr->getTime()); 4016285Snate@binkert.org bool found = insertRequest(srequest); 4026285Snate@binkert.org if (!found) 4036350Spdudnik@gmail.com if (request.type == RubyRequestType_Locked_Write) { 4046355Spdudnik@gmail.com // NOTE: it is OK to check the locked flag here as the mandatory queue will be checked first 4056355Spdudnik@gmail.com // ensuring that nothing comes between checking the flag and servicing the store 4066349Spdudnik@gmail.com if (!m_dataCache_ptr->isLocked(line_address(Address(request.paddr)), m_version)) { 4076355Spdudnik@gmail.com return LLSC_FAIL; 4086349Spdudnik@gmail.com } 4096349Spdudnik@gmail.com else { 4106349Spdudnik@gmail.com m_dataCache_ptr->clearLocked(line_address(Address(request.paddr))); 4116349Spdudnik@gmail.com } 4126349Spdudnik@gmail.com } 4136285Snate@binkert.org issueRequest(request); 4146145Snate@binkert.org 4156285Snate@binkert.org // TODO: issue hardware prefetches here 4166285Snate@binkert.org return id; 4176145Snate@binkert.org } 4186285Snate@binkert.org else { 4196285Snate@binkert.org return -1; 4206145Snate@binkert.org } 4216145Snate@binkert.org} 4226145Snate@binkert.org 4236285Snate@binkert.orgvoid Sequencer::issueRequest(const RubyRequest& request) { 4246285Snate@binkert.org 4256285Snate@binkert.org // TODO: get rid of CacheMsg, CacheRequestType, and AccessModeTYpe, & have SLICC use RubyRequest and subtypes natively 4266285Snate@binkert.org CacheRequestType ctype; 4276285Snate@binkert.org switch(request.type) { 4286285Snate@binkert.org case RubyRequestType_IFETCH: 4296285Snate@binkert.org ctype = CacheRequestType_IFETCH; 4306285Snate@binkert.org break; 4316285Snate@binkert.org case RubyRequestType_LD: 4326285Snate@binkert.org ctype = CacheRequestType_LD; 4336285Snate@binkert.org break; 4346285Snate@binkert.org case RubyRequestType_ST: 4356285Snate@binkert.org ctype = CacheRequestType_ST; 4366285Snate@binkert.org break; 4376350Spdudnik@gmail.com case RubyRequestType_Locked_Read: 4386353Spdudnik@gmail.com ctype = CacheRequestType_ST; 4396347Spdudnik@gmail.com break; 4406350Spdudnik@gmail.com case RubyRequestType_Locked_Write: 4416353Spdudnik@gmail.com ctype = CacheRequestType_ST; 4426285Snate@binkert.org break; 4436355Spdudnik@gmail.com case RubyRequestType_RMW_Read: 4446355Spdudnik@gmail.com ctype = CacheRequestType_ATOMIC; 4456355Spdudnik@gmail.com break; 4466355Spdudnik@gmail.com case RubyRequestType_RMW_Write: 4476355Spdudnik@gmail.com ctype = CacheRequestType_ATOMIC; 4486355Spdudnik@gmail.com break; 4496285Snate@binkert.org default: 4506285Snate@binkert.org assert(0); 4516145Snate@binkert.org } 4526285Snate@binkert.org AccessModeType amtype; 4536285Snate@binkert.org switch(request.access_mode){ 4546285Snate@binkert.org case RubyAccessMode_User: 4556285Snate@binkert.org amtype = AccessModeType_UserMode; 4566285Snate@binkert.org break; 4576285Snate@binkert.org case RubyAccessMode_Supervisor: 4586285Snate@binkert.org amtype = AccessModeType_SupervisorMode; 4596285Snate@binkert.org break; 4606285Snate@binkert.org case RubyAccessMode_Device: 4616285Snate@binkert.org amtype = AccessModeType_UserMode; 4626285Snate@binkert.org break; 4636285Snate@binkert.org default: 4646285Snate@binkert.org assert(0); 4656285Snate@binkert.org } 4666285Snate@binkert.org Address line_addr(request.paddr); 4676285Snate@binkert.org line_addr.makeLineAddress(); 4686505Spdudnik@gmail.com CacheMsg msg(line_addr, Address(request.paddr), ctype, Address(request.pc), amtype, request.len, PrefetchBit_No, request.proc_id); 4696285Snate@binkert.org 4706285Snate@binkert.org if (Debug::getProtocolTrace()) { 4716285Snate@binkert.org g_system_ptr->getProfiler()->profileTransition("Seq", m_version, Address(request.paddr), 4726285Snate@binkert.org "", "Begin", "", RubyRequestType_to_string(request.type)); 4736285Snate@binkert.org } 4746285Snate@binkert.org 4756285Snate@binkert.org if (g_system_ptr->getTracer()->traceEnabled()) { 4766285Snate@binkert.org g_system_ptr->getTracer()->traceRequest(m_name, line_addr, Address(request.pc), 4776285Snate@binkert.org request.type, g_eventQueue_ptr->getTime()); 4786285Snate@binkert.org } 4796285Snate@binkert.org 4806285Snate@binkert.org Time latency = 0; // initialzed to an null value 4816285Snate@binkert.org 4826285Snate@binkert.org if (request.type == RubyRequestType_IFETCH) 4836285Snate@binkert.org latency = m_instCache_ptr->getLatency(); 4846285Snate@binkert.org else 4856285Snate@binkert.org latency = m_dataCache_ptr->getLatency(); 4866285Snate@binkert.org 4876285Snate@binkert.org // Send the message to the cache controller 4886285Snate@binkert.org assert(latency > 0); 4896285Snate@binkert.org 4906285Snate@binkert.org 4916285Snate@binkert.org m_mandatory_q_ptr->enqueue(msg, latency); 4926285Snate@binkert.org} 4936285Snate@binkert.org/* 4946285Snate@binkert.orgbool Sequencer::tryCacheAccess(const Address& addr, CacheRequestType type, 4956285Snate@binkert.org AccessModeType access_mode, 4966285Snate@binkert.org int size, DataBlock*& data_ptr) { 4976285Snate@binkert.org if (type == CacheRequestType_IFETCH) { 4986285Snate@binkert.org return m_instCache_ptr->tryCacheAccess(line_address(addr), type, data_ptr); 4996285Snate@binkert.org } else { 5006285Snate@binkert.org return m_dataCache_ptr->tryCacheAccess(line_address(addr), type, data_ptr); 5016145Snate@binkert.org } 5026145Snate@binkert.org} 5036285Snate@binkert.org*/ 5046145Snate@binkert.org 5056145Snate@binkert.orgvoid Sequencer::print(ostream& out) const { 5066285Snate@binkert.org out << "[Sequencer: " << m_version 5076145Snate@binkert.org << ", outstanding requests: " << m_outstanding_count; 5086145Snate@binkert.org 5096285Snate@binkert.org out << ", read request table: " << m_readRequestTable 5106285Snate@binkert.org << ", write request table: " << m_writeRequestTable; 5116145Snate@binkert.org out << "]"; 5126145Snate@binkert.org} 5136145Snate@binkert.org 5146145Snate@binkert.org// this can be called from setState whenever coherence permissions are upgraded 5156145Snate@binkert.org// when invoked, coherence violations will be checked for the given block 5166145Snate@binkert.orgvoid Sequencer::checkCoherence(const Address& addr) { 5176145Snate@binkert.org#ifdef CHECK_COHERENCE 5186145Snate@binkert.org g_system_ptr->checkGlobalCoherenceInvariant(addr); 5196145Snate@binkert.org#endif 5206145Snate@binkert.org} 5216145Snate@binkert.org 522