Sequencer.cc revision 6381
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; 646285Snate@binkert.org for (size_t i=0; i<argv.size(); i+=2) { 656285Snate@binkert.org if ( argv[i] == "controller") { 666285Snate@binkert.org m_controller = RubySystem::getController(argv[i+1]); // args[i] = "L1Cache" 676285Snate@binkert.org m_mandatory_q_ptr = m_controller->getMandatoryQueue(); 686285Snate@binkert.org } else if ( argv[i] == "icache") 696285Snate@binkert.org m_instCache_ptr = RubySystem::getCache(argv[i+1]); 706285Snate@binkert.org else if ( argv[i] == "dcache") 716285Snate@binkert.org m_dataCache_ptr = RubySystem::getCache(argv[i+1]); 726285Snate@binkert.org else if ( argv[i] == "version") 736285Snate@binkert.org m_version = atoi(argv[i+1].c_str()); 746285Snate@binkert.org else if ( argv[i] == "max_outstanding_requests") 756285Snate@binkert.org m_max_outstanding_requests = atoi(argv[i+1].c_str()); 766285Snate@binkert.org else if ( argv[i] == "deadlock_threshold") 776285Snate@binkert.org m_deadlock_threshold = atoi(argv[i+1].c_str()); 786285Snate@binkert.org else { 796285Snate@binkert.org cerr << "WARNING: Sequencer: Unkown configuration parameter: " << argv[i] << endl; 806285Snate@binkert.org assert(false); 816285Snate@binkert.org } 826145Snate@binkert.org } 836285Snate@binkert.org assert(m_max_outstanding_requests > 0); 846285Snate@binkert.org assert(m_deadlock_threshold > 0); 856285Snate@binkert.org assert(m_version > -1); 866285Snate@binkert.org assert(m_instCache_ptr != NULL); 876285Snate@binkert.org assert(m_dataCache_ptr != NULL); 886285Snate@binkert.org assert(m_controller != NULL); 896145Snate@binkert.org} 906145Snate@binkert.org 916145Snate@binkert.orgSequencer::~Sequencer() { 926285Snate@binkert.org 936145Snate@binkert.org} 946145Snate@binkert.org 956145Snate@binkert.orgvoid Sequencer::wakeup() { 966145Snate@binkert.org // Check for deadlock of any of the requests 976145Snate@binkert.org Time current_time = g_eventQueue_ptr->getTime(); 986145Snate@binkert.org 996145Snate@binkert.org // Check across all outstanding requests 1006145Snate@binkert.org int total_outstanding = 0; 1016285Snate@binkert.org 1026285Snate@binkert.org Vector<Address> keys = m_readRequestTable.keys(); 1036285Snate@binkert.org for (int i=0; i<keys.size(); i++) { 1046285Snate@binkert.org SequencerRequest* request = m_readRequestTable.lookup(keys[i]); 1056285Snate@binkert.org if (current_time - request->issue_time >= m_deadlock_threshold) { 1066285Snate@binkert.org WARN_MSG("Possible Deadlock detected"); 1076285Snate@binkert.org WARN_EXPR(request); 1086285Snate@binkert.org WARN_EXPR(m_version); 1096285Snate@binkert.org WARN_EXPR(keys.size()); 1106285Snate@binkert.org WARN_EXPR(current_time); 1116285Snate@binkert.org WARN_EXPR(request->issue_time); 1126285Snate@binkert.org WARN_EXPR(current_time - request->issue_time); 1136285Snate@binkert.org ERROR_MSG("Aborting"); 1146145Snate@binkert.org } 1156285Snate@binkert.org } 1166145Snate@binkert.org 1176285Snate@binkert.org keys = m_writeRequestTable.keys(); 1186285Snate@binkert.org for (int i=0; i<keys.size(); i++) { 1196285Snate@binkert.org SequencerRequest* request = m_writeRequestTable.lookup(keys[i]); 1206285Snate@binkert.org if (current_time - request->issue_time >= m_deadlock_threshold) { 1216285Snate@binkert.org WARN_MSG("Possible Deadlock detected"); 1226285Snate@binkert.org WARN_EXPR(request); 1236285Snate@binkert.org WARN_EXPR(m_version); 1246285Snate@binkert.org WARN_EXPR(current_time); 1256285Snate@binkert.org WARN_EXPR(request->issue_time); 1266285Snate@binkert.org WARN_EXPR(current_time - request->issue_time); 1276285Snate@binkert.org WARN_EXPR(keys.size()); 1286285Snate@binkert.org ERROR_MSG("Aborting"); 1296145Snate@binkert.org } 1306285Snate@binkert.org } 1316285Snate@binkert.org total_outstanding += m_writeRequestTable.size() + m_readRequestTable.size(); 1326285Snate@binkert.org 1336145Snate@binkert.org assert(m_outstanding_count == total_outstanding); 1346145Snate@binkert.org 1356145Snate@binkert.org if (m_outstanding_count > 0) { // If there are still outstanding requests, keep checking 1366285Snate@binkert.org g_eventQueue_ptr->scheduleEvent(this, m_deadlock_threshold); 1376145Snate@binkert.org } else { 1386145Snate@binkert.org m_deadlock_check_scheduled = false; 1396145Snate@binkert.org } 1406145Snate@binkert.org} 1416145Snate@binkert.org 1426145Snate@binkert.orgvoid Sequencer::printProgress(ostream& out) const{ 1436285Snate@binkert.org /* 1446145Snate@binkert.org int total_demand = 0; 1456145Snate@binkert.org out << "Sequencer Stats Version " << m_version << endl; 1466145Snate@binkert.org out << "Current time = " << g_eventQueue_ptr->getTime() << endl; 1476145Snate@binkert.org out << "---------------" << endl; 1486145Snate@binkert.org out << "outstanding requests" << endl; 1496145Snate@binkert.org 1506285Snate@binkert.org Vector<Address> rkeys = m_readRequestTable.keys(); 1516285Snate@binkert.org int read_size = rkeys.size(); 1526285Snate@binkert.org out << "proc " << m_version << " Read Requests = " << read_size << endl; 1536285Snate@binkert.org // print the request table 1546285Snate@binkert.org for(int i=0; i < read_size; ++i){ 1556285Snate@binkert.org SequencerRequest * request = m_readRequestTable.lookup(rkeys[i]); 1566285Snate@binkert.org out << "\tRequest[ " << i << " ] = " << request->type << " Address " << rkeys[i] << " Posted " << request->issue_time << " PF " << PrefetchBit_No << endl; 1576285Snate@binkert.org total_demand++; 1586285Snate@binkert.org } 1596145Snate@binkert.org 1606285Snate@binkert.org Vector<Address> wkeys = m_writeRequestTable.keys(); 1616285Snate@binkert.org int write_size = wkeys.size(); 1626285Snate@binkert.org out << "proc " << m_version << " Write Requests = " << write_size << endl; 1636285Snate@binkert.org // print the request table 1646285Snate@binkert.org for(int i=0; i < write_size; ++i){ 1656285Snate@binkert.org CacheMsg & request = m_writeRequestTable.lookup(wkeys[i]); 1666145Snate@binkert.org out << "\tRequest[ " << i << " ] = " << request.getType() << " Address " << wkeys[i] << " Posted " << request.getTime() << " PF " << request.getPrefetch() << endl; 1676145Snate@binkert.org if( request.getPrefetch() == PrefetchBit_No ){ 1686145Snate@binkert.org total_demand++; 1696145Snate@binkert.org } 1706285Snate@binkert.org } 1716145Snate@binkert.org 1726285Snate@binkert.org out << endl; 1736285Snate@binkert.org 1746145Snate@binkert.org out << "Total Number Outstanding: " << m_outstanding_count << endl; 1756145Snate@binkert.org out << "Total Number Demand : " << total_demand << endl; 1766145Snate@binkert.org out << "Total Number Prefetches : " << m_outstanding_count - total_demand << endl; 1776145Snate@binkert.org out << endl; 1786145Snate@binkert.org out << endl; 1796285Snate@binkert.org */ 1806145Snate@binkert.org} 1816145Snate@binkert.org 1826285Snate@binkert.orgvoid Sequencer::printConfig(ostream& out) const { 1836285Snate@binkert.org out << "Seqeuncer config: " << m_name << endl; 1846285Snate@binkert.org out << " controller: " << m_controller->getName() << endl; 1856285Snate@binkert.org out << " version: " << m_version << endl; 1866285Snate@binkert.org out << " max_outstanding_requests: " << m_max_outstanding_requests << endl; 1876285Snate@binkert.org out << " deadlock_threshold: " << m_deadlock_threshold << endl; 1886145Snate@binkert.org} 1896145Snate@binkert.org 1906145Snate@binkert.org// Insert the request on the correct request table. Return true if 1916145Snate@binkert.org// the entry was already present. 1926285Snate@binkert.orgbool Sequencer::insertRequest(SequencerRequest* request) { 1936285Snate@binkert.org int total_outstanding = m_writeRequestTable.size() + m_readRequestTable.size(); 1946285Snate@binkert.org 1956145Snate@binkert.org assert(m_outstanding_count == total_outstanding); 1966145Snate@binkert.org 1976145Snate@binkert.org // See if we should schedule a deadlock check 1986145Snate@binkert.org if (m_deadlock_check_scheduled == false) { 1996285Snate@binkert.org g_eventQueue_ptr->scheduleEvent(this, m_deadlock_threshold); 2006145Snate@binkert.org m_deadlock_check_scheduled = true; 2016145Snate@binkert.org } 2026145Snate@binkert.org 2036285Snate@binkert.org Address line_addr(request->ruby_request.paddr); 2046285Snate@binkert.org line_addr.makeLineAddress(); 2056285Snate@binkert.org if ((request->ruby_request.type == RubyRequestType_ST) || 2066355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Read) || 2076355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Write) || 2086350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Read) || 2096350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Write)) { 2106285Snate@binkert.org if (m_writeRequestTable.exist(line_addr)) { 2116285Snate@binkert.org m_writeRequestTable.lookup(line_addr) = request; 2126285Snate@binkert.org // return true; 2136285Snate@binkert.org assert(0); // drh5: isn't this an error? do you lose the initial request? 2146145Snate@binkert.org } 2156285Snate@binkert.org m_writeRequestTable.allocate(line_addr); 2166285Snate@binkert.org m_writeRequestTable.lookup(line_addr) = request; 2176145Snate@binkert.org m_outstanding_count++; 2186145Snate@binkert.org } else { 2196285Snate@binkert.org if (m_readRequestTable.exist(line_addr)) { 2206285Snate@binkert.org m_readRequestTable.lookup(line_addr) = request; 2216285Snate@binkert.org // return true; 2226285Snate@binkert.org assert(0); // drh5: isn't this an error? do you lose the initial request? 2236145Snate@binkert.org } 2246285Snate@binkert.org m_readRequestTable.allocate(line_addr); 2256285Snate@binkert.org m_readRequestTable.lookup(line_addr) = request; 2266145Snate@binkert.org m_outstanding_count++; 2276145Snate@binkert.org } 2286145Snate@binkert.org 2296145Snate@binkert.org g_system_ptr->getProfiler()->sequencerRequests(m_outstanding_count); 2306145Snate@binkert.org 2316285Snate@binkert.org total_outstanding = m_writeRequestTable.size() + m_readRequestTable.size(); 2326285Snate@binkert.org assert(m_outstanding_count == total_outstanding); 2336145Snate@binkert.org 2346145Snate@binkert.org return false; 2356145Snate@binkert.org} 2366145Snate@binkert.org 2376285Snate@binkert.orgvoid Sequencer::removeRequest(SequencerRequest* srequest) { 2386145Snate@binkert.org 2396285Snate@binkert.org assert(m_outstanding_count == m_writeRequestTable.size() + m_readRequestTable.size()); 2406285Snate@binkert.org 2416285Snate@binkert.org const RubyRequest & ruby_request = srequest->ruby_request; 2426285Snate@binkert.org Address line_addr(ruby_request.paddr); 2436285Snate@binkert.org line_addr.makeLineAddress(); 2446285Snate@binkert.org if ((ruby_request.type == RubyRequestType_ST) || 2456355Spdudnik@gmail.com (ruby_request.type == RubyRequestType_RMW_Read) || 2466355Spdudnik@gmail.com (ruby_request.type == RubyRequestType_RMW_Write) || 2476350Spdudnik@gmail.com (ruby_request.type == RubyRequestType_Locked_Read) || 2486350Spdudnik@gmail.com (ruby_request.type == RubyRequestType_Locked_Write)) { 2496285Snate@binkert.org m_writeRequestTable.deallocate(line_addr); 2506145Snate@binkert.org } else { 2516285Snate@binkert.org m_readRequestTable.deallocate(line_addr); 2526145Snate@binkert.org } 2536145Snate@binkert.org m_outstanding_count--; 2546145Snate@binkert.org 2556285Snate@binkert.org assert(m_outstanding_count == m_writeRequestTable.size() + m_readRequestTable.size()); 2566145Snate@binkert.org} 2576145Snate@binkert.org 2586145Snate@binkert.orgvoid Sequencer::writeCallback(const Address& address, DataBlock& data) { 2596145Snate@binkert.org 2606145Snate@binkert.org assert(address == line_address(address)); 2616285Snate@binkert.org assert(m_writeRequestTable.exist(line_address(address))); 2626145Snate@binkert.org 2636285Snate@binkert.org SequencerRequest* request = m_writeRequestTable.lookup(address); 2646145Snate@binkert.org removeRequest(request); 2656145Snate@binkert.org 2666285Snate@binkert.org assert((request->ruby_request.type == RubyRequestType_ST) || 2676355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Read) || 2686355Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_RMW_Write) || 2696350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Read) || 2706350Spdudnik@gmail.com (request->ruby_request.type == RubyRequestType_Locked_Write)); 2716347Spdudnik@gmail.com // POLINA: the assumption is that atomics are only on data cache and not instruction cache 2726350Spdudnik@gmail.com if (request->ruby_request.type == RubyRequestType_Locked_Read) { 2736347Spdudnik@gmail.com m_dataCache_ptr->setLocked(address, m_version); 2746347Spdudnik@gmail.com } 2756145Snate@binkert.org 2766285Snate@binkert.org hitCallback(request, data); 2776145Snate@binkert.org} 2786145Snate@binkert.org 2796145Snate@binkert.orgvoid Sequencer::readCallback(const Address& address, DataBlock& data) { 2806145Snate@binkert.org 2816285Snate@binkert.org assert(address == line_address(address)); 2826285Snate@binkert.org assert(m_readRequestTable.exist(line_address(address))); 2836145Snate@binkert.org 2846285Snate@binkert.org SequencerRequest* request = m_readRequestTable.lookup(address); 2856285Snate@binkert.org removeRequest(request); 2866285Snate@binkert.org 2876285Snate@binkert.org assert((request->ruby_request.type == RubyRequestType_LD) || 2886381Sdrh5@cs.wisc.edu (request->ruby_request.type == RubyRequestType_RMW_Read) || 2896285Snate@binkert.org (request->ruby_request.type == RubyRequestType_IFETCH)); 2906285Snate@binkert.org 2916285Snate@binkert.org hitCallback(request, data); 2926145Snate@binkert.org} 2936145Snate@binkert.org 2946285Snate@binkert.orgvoid Sequencer::hitCallback(SequencerRequest* srequest, DataBlock& data) { 2956285Snate@binkert.org const RubyRequest & ruby_request = srequest->ruby_request; 2966285Snate@binkert.org Address request_address(ruby_request.paddr); 2976285Snate@binkert.org Address request_line_address(ruby_request.paddr); 2986285Snate@binkert.org request_line_address.makeLineAddress(); 2996285Snate@binkert.org RubyRequestType type = ruby_request.type; 3006285Snate@binkert.org Time issued_time = srequest->issue_time; 3016145Snate@binkert.org 3026145Snate@binkert.org // Set this cache entry to the most recently used 3036285Snate@binkert.org if (type == RubyRequestType_IFETCH) { 3046285Snate@binkert.org if (m_instCache_ptr->isTagPresent(request_line_address) ) 3056285Snate@binkert.org m_instCache_ptr->setMRU(request_line_address); 3066145Snate@binkert.org } else { 3076285Snate@binkert.org if (m_dataCache_ptr->isTagPresent(request_line_address) ) 3086285Snate@binkert.org m_dataCache_ptr->setMRU(request_line_address); 3096145Snate@binkert.org } 3106145Snate@binkert.org 3116145Snate@binkert.org assert(g_eventQueue_ptr->getTime() >= issued_time); 3126145Snate@binkert.org Time miss_latency = g_eventQueue_ptr->getTime() - issued_time; 3136145Snate@binkert.org 3146285Snate@binkert.org // Profile the miss latency for all non-zero demand misses 3156285Snate@binkert.org if (miss_latency != 0) { 3166285Snate@binkert.org g_system_ptr->getProfiler()->missLatency(miss_latency, type); 3176285Snate@binkert.org 3186285Snate@binkert.org if (Debug::getProtocolTrace()) { 3196285Snate@binkert.org g_system_ptr->getProfiler()->profileTransition("Seq", m_version, Address(ruby_request.paddr), 3206285Snate@binkert.org "", "Done", "", int_to_string(miss_latency)+" cycles"); 3216285Snate@binkert.org } 3226285Snate@binkert.org } 3236285Snate@binkert.org /* 3246285Snate@binkert.org if (request.getPrefetch() == PrefetchBit_Yes) { 3256285Snate@binkert.org return; // Ignore the prefetch 3266285Snate@binkert.org } 3276285Snate@binkert.org */ 3286285Snate@binkert.org 3296285Snate@binkert.org // update the data 3306285Snate@binkert.org if (ruby_request.data != NULL) { 3316285Snate@binkert.org if ((type == RubyRequestType_LD) || 3326381Sdrh5@cs.wisc.edu (type == RubyRequestType_IFETCH) || 3336381Sdrh5@cs.wisc.edu (type == RubyRequestType_RMW_Read)) { 3346285Snate@binkert.org memcpy(ruby_request.data, data.getData(request_address.getOffset(), ruby_request.len), ruby_request.len); 3356285Snate@binkert.org } else { 3366285Snate@binkert.org data.setData(ruby_request.data, request_address.getOffset(), ruby_request.len); 3376285Snate@binkert.org } 3386145Snate@binkert.org } 3396145Snate@binkert.org 3406285Snate@binkert.org m_hit_callback(srequest->id); 3416285Snate@binkert.org delete srequest; 3426285Snate@binkert.org} 3436285Snate@binkert.org 3446285Snate@binkert.org// Returns true if the sequencer already has a load or store outstanding 3456285Snate@binkert.orgbool Sequencer::isReady(const RubyRequest& request) const { 3466285Snate@binkert.org // POLINA: check if we are currently flushing the write buffer, if so Ruby is returned as not ready 3476285Snate@binkert.org // to simulate stalling of the front-end 3486285Snate@binkert.org // Do we stall all the sequencers? If it is atomic instruction - yes! 3496285Snate@binkert.org if (m_outstanding_count >= m_max_outstanding_requests) { 3506285Snate@binkert.org return false; 3516145Snate@binkert.org } 3526145Snate@binkert.org 3536285Snate@binkert.org if( m_writeRequestTable.exist(line_address(Address(request.paddr))) || 3546285Snate@binkert.org m_readRequestTable.exist(line_address(Address(request.paddr))) ){ 3556285Snate@binkert.org //cout << "OUTSTANDING REQUEST EXISTS " << p << " VER " << m_version << endl; 3566145Snate@binkert.org //printProgress(cout); 3576145Snate@binkert.org return false; 3586145Snate@binkert.org } 3596145Snate@binkert.org 3606145Snate@binkert.org return true; 3616145Snate@binkert.org} 3626145Snate@binkert.org 3636285Snate@binkert.orgbool Sequencer::empty() const { 3646285Snate@binkert.org return (m_writeRequestTable.size() == 0) && (m_readRequestTable.size() == 0); 3656145Snate@binkert.org} 3666145Snate@binkert.org 3676349Spdudnik@gmail.com 3686285Snate@binkert.orgint64_t Sequencer::makeRequest(const RubyRequest & request) 3696285Snate@binkert.org{ 3706285Snate@binkert.org assert(Address(request.paddr).getOffset() + request.len <= RubySystem::getBlockSizeBytes()); 3716285Snate@binkert.org if (isReady(request)) { 3726285Snate@binkert.org int64_t id = makeUniqueRequestID(); 3736285Snate@binkert.org SequencerRequest *srequest = new SequencerRequest(request, id, g_eventQueue_ptr->getTime()); 3746285Snate@binkert.org bool found = insertRequest(srequest); 3756285Snate@binkert.org if (!found) 3766350Spdudnik@gmail.com if (request.type == RubyRequestType_Locked_Write) { 3776355Spdudnik@gmail.com // NOTE: it is OK to check the locked flag here as the mandatory queue will be checked first 3786355Spdudnik@gmail.com // ensuring that nothing comes between checking the flag and servicing the store 3796349Spdudnik@gmail.com if (!m_dataCache_ptr->isLocked(line_address(Address(request.paddr)), m_version)) { 3806355Spdudnik@gmail.com return LLSC_FAIL; 3816349Spdudnik@gmail.com } 3826349Spdudnik@gmail.com else { 3836349Spdudnik@gmail.com m_dataCache_ptr->clearLocked(line_address(Address(request.paddr))); 3846349Spdudnik@gmail.com } 3856349Spdudnik@gmail.com } 3866285Snate@binkert.org issueRequest(request); 3876145Snate@binkert.org 3886285Snate@binkert.org // TODO: issue hardware prefetches here 3896285Snate@binkert.org return id; 3906145Snate@binkert.org } 3916285Snate@binkert.org else { 3926285Snate@binkert.org return -1; 3936145Snate@binkert.org } 3946145Snate@binkert.org} 3956145Snate@binkert.org 3966285Snate@binkert.orgvoid Sequencer::issueRequest(const RubyRequest& request) { 3976285Snate@binkert.org 3986285Snate@binkert.org // TODO: get rid of CacheMsg, CacheRequestType, and AccessModeTYpe, & have SLICC use RubyRequest and subtypes natively 3996285Snate@binkert.org CacheRequestType ctype; 4006285Snate@binkert.org switch(request.type) { 4016285Snate@binkert.org case RubyRequestType_IFETCH: 4026285Snate@binkert.org ctype = CacheRequestType_IFETCH; 4036285Snate@binkert.org break; 4046285Snate@binkert.org case RubyRequestType_LD: 4056285Snate@binkert.org ctype = CacheRequestType_LD; 4066285Snate@binkert.org break; 4076285Snate@binkert.org case RubyRequestType_ST: 4086285Snate@binkert.org ctype = CacheRequestType_ST; 4096285Snate@binkert.org break; 4106350Spdudnik@gmail.com case RubyRequestType_Locked_Read: 4116353Spdudnik@gmail.com ctype = CacheRequestType_ST; 4126347Spdudnik@gmail.com break; 4136350Spdudnik@gmail.com case RubyRequestType_Locked_Write: 4146353Spdudnik@gmail.com ctype = CacheRequestType_ST; 4156285Snate@binkert.org break; 4166355Spdudnik@gmail.com case RubyRequestType_RMW_Read: 4176355Spdudnik@gmail.com ctype = CacheRequestType_ATOMIC; 4186355Spdudnik@gmail.com break; 4196355Spdudnik@gmail.com case RubyRequestType_RMW_Write: 4206355Spdudnik@gmail.com ctype = CacheRequestType_ATOMIC; 4216355Spdudnik@gmail.com break; 4226285Snate@binkert.org default: 4236285Snate@binkert.org assert(0); 4246145Snate@binkert.org } 4256285Snate@binkert.org AccessModeType amtype; 4266285Snate@binkert.org switch(request.access_mode){ 4276285Snate@binkert.org case RubyAccessMode_User: 4286285Snate@binkert.org amtype = AccessModeType_UserMode; 4296285Snate@binkert.org break; 4306285Snate@binkert.org case RubyAccessMode_Supervisor: 4316285Snate@binkert.org amtype = AccessModeType_SupervisorMode; 4326285Snate@binkert.org break; 4336285Snate@binkert.org case RubyAccessMode_Device: 4346285Snate@binkert.org amtype = AccessModeType_UserMode; 4356285Snate@binkert.org break; 4366285Snate@binkert.org default: 4376285Snate@binkert.org assert(0); 4386285Snate@binkert.org } 4396285Snate@binkert.org Address line_addr(request.paddr); 4406285Snate@binkert.org line_addr.makeLineAddress(); 4416285Snate@binkert.org CacheMsg msg(line_addr, Address(request.paddr), ctype, Address(request.pc), amtype, request.len, PrefetchBit_No); 4426285Snate@binkert.org 4436285Snate@binkert.org if (Debug::getProtocolTrace()) { 4446285Snate@binkert.org g_system_ptr->getProfiler()->profileTransition("Seq", m_version, Address(request.paddr), 4456285Snate@binkert.org "", "Begin", "", RubyRequestType_to_string(request.type)); 4466285Snate@binkert.org } 4476285Snate@binkert.org 4486285Snate@binkert.org if (g_system_ptr->getTracer()->traceEnabled()) { 4496285Snate@binkert.org g_system_ptr->getTracer()->traceRequest(m_name, line_addr, Address(request.pc), 4506285Snate@binkert.org request.type, g_eventQueue_ptr->getTime()); 4516285Snate@binkert.org } 4526285Snate@binkert.org 4536285Snate@binkert.org Time latency = 0; // initialzed to an null value 4546285Snate@binkert.org 4556285Snate@binkert.org if (request.type == RubyRequestType_IFETCH) 4566285Snate@binkert.org latency = m_instCache_ptr->getLatency(); 4576285Snate@binkert.org else 4586285Snate@binkert.org latency = m_dataCache_ptr->getLatency(); 4596285Snate@binkert.org 4606285Snate@binkert.org // Send the message to the cache controller 4616285Snate@binkert.org assert(latency > 0); 4626285Snate@binkert.org 4636285Snate@binkert.org 4646285Snate@binkert.org m_mandatory_q_ptr->enqueue(msg, latency); 4656285Snate@binkert.org} 4666285Snate@binkert.org/* 4676285Snate@binkert.orgbool Sequencer::tryCacheAccess(const Address& addr, CacheRequestType type, 4686285Snate@binkert.org AccessModeType access_mode, 4696285Snate@binkert.org int size, DataBlock*& data_ptr) { 4706285Snate@binkert.org if (type == CacheRequestType_IFETCH) { 4716285Snate@binkert.org return m_instCache_ptr->tryCacheAccess(line_address(addr), type, data_ptr); 4726285Snate@binkert.org } else { 4736285Snate@binkert.org return m_dataCache_ptr->tryCacheAccess(line_address(addr), type, data_ptr); 4746145Snate@binkert.org } 4756145Snate@binkert.org} 4766285Snate@binkert.org*/ 4776145Snate@binkert.org 4786145Snate@binkert.orgvoid Sequencer::print(ostream& out) const { 4796285Snate@binkert.org out << "[Sequencer: " << m_version 4806145Snate@binkert.org << ", outstanding requests: " << m_outstanding_count; 4816145Snate@binkert.org 4826285Snate@binkert.org out << ", read request table: " << m_readRequestTable 4836285Snate@binkert.org << ", write request table: " << m_writeRequestTable; 4846145Snate@binkert.org out << "]"; 4856145Snate@binkert.org} 4866145Snate@binkert.org 4876145Snate@binkert.org// this can be called from setState whenever coherence permissions are upgraded 4886145Snate@binkert.org// when invoked, coherence violations will be checked for the given block 4896145Snate@binkert.orgvoid Sequencer::checkCoherence(const Address& addr) { 4906145Snate@binkert.org#ifdef CHECK_COHERENCE 4916145Snate@binkert.org g_system_ptr->checkGlobalCoherenceInvariant(addr); 4926145Snate@binkert.org#endif 4936145Snate@binkert.org} 4946145Snate@binkert.org 495