Sequencer.cc revision 7832
16145Snate@binkert.org/* 26145Snate@binkert.org * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 36145Snate@binkert.org * All rights reserved. 46145Snate@binkert.org * 56145Snate@binkert.org * Redistribution and use in source and binary forms, with or without 66145Snate@binkert.org * modification, are permitted provided that the following conditions are 76145Snate@binkert.org * met: redistributions of source code must retain the above copyright 86145Snate@binkert.org * notice, this list of conditions and the following disclaimer; 96145Snate@binkert.org * redistributions in binary form must reproduce the above copyright 106145Snate@binkert.org * notice, this list of conditions and the following disclaimer in the 116145Snate@binkert.org * documentation and/or other materials provided with the distribution; 126145Snate@binkert.org * neither the name of the copyright holders nor the names of its 136145Snate@binkert.org * contributors may be used to endorse or promote products derived from 146145Snate@binkert.org * this software without specific prior written permission. 156145Snate@binkert.org * 166145Snate@binkert.org * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 176145Snate@binkert.org * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 186145Snate@binkert.org * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 196145Snate@binkert.org * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 206145Snate@binkert.org * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 216145Snate@binkert.org * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 226145Snate@binkert.org * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 236145Snate@binkert.org * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 246145Snate@binkert.org * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 256145Snate@binkert.org * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 266145Snate@binkert.org * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 276145Snate@binkert.org */ 286145Snate@binkert.org 297056Snate@binkert.org#include "base/str.hh" 307805Snilay@cs.wisc.edu#include "base/misc.hh" 317632SBrad.Beckmann@amd.com#include "cpu/testers/rubytest/RubyTester.hh" 327039Snate@binkert.org#include "mem/protocol/CacheMsg.hh" 337039Snate@binkert.org#include "mem/protocol/Protocol.hh" 347039Snate@binkert.org#include "mem/protocol/Protocol.hh" 357039Snate@binkert.org#include "mem/ruby/buffers/MessageBuffer.hh" 367039Snate@binkert.org#include "mem/ruby/common/Global.hh" 377039Snate@binkert.org#include "mem/ruby/common/SubBlock.hh" 386845Sdrh5@cs.wisc.edu#include "mem/ruby/libruby.hh" 397039Snate@binkert.org#include "mem/ruby/profiler/Profiler.hh" 407039Snate@binkert.org#include "mem/ruby/recorder/Tracer.hh" 417039Snate@binkert.org#include "mem/ruby/slicc_interface/AbstractController.hh" 427039Snate@binkert.org#include "mem/ruby/system/CacheMemory.hh" 436154Snate@binkert.org#include "mem/ruby/system/Sequencer.hh" 446154Snate@binkert.org#include "mem/ruby/system/System.hh" 457550SBrad.Beckmann@amd.com#include "mem/packet.hh" 466876Ssteve.reinhardt@amd.com#include "params/RubySequencer.hh" 476876Ssteve.reinhardt@amd.com 487055Snate@binkert.orgusing namespace std; 497055Snate@binkert.org 506876Ssteve.reinhardt@amd.comSequencer * 516876Ssteve.reinhardt@amd.comRubySequencerParams::create() 526285Snate@binkert.org{ 536876Ssteve.reinhardt@amd.com return new Sequencer(this); 546285Snate@binkert.org} 557039Snate@binkert.org 566876Ssteve.reinhardt@amd.comSequencer::Sequencer(const Params *p) 576886SBrad.Beckmann@amd.com : RubyPort(p), deadlockCheckEvent(this) 586876Ssteve.reinhardt@amd.com{ 596876Ssteve.reinhardt@amd.com m_store_waiting_on_load_cycles = 0; 606876Ssteve.reinhardt@amd.com m_store_waiting_on_store_cycles = 0; 616876Ssteve.reinhardt@amd.com m_load_waiting_on_store_cycles = 0; 626876Ssteve.reinhardt@amd.com m_load_waiting_on_load_cycles = 0; 637039Snate@binkert.org 646876Ssteve.reinhardt@amd.com m_outstanding_count = 0; 656285Snate@binkert.org 666876Ssteve.reinhardt@amd.com m_max_outstanding_requests = 0; 676876Ssteve.reinhardt@amd.com m_deadlock_threshold = 0; 686876Ssteve.reinhardt@amd.com m_instCache_ptr = NULL; 696876Ssteve.reinhardt@amd.com m_dataCache_ptr = NULL; 706145Snate@binkert.org 716876Ssteve.reinhardt@amd.com m_instCache_ptr = p->icache; 726876Ssteve.reinhardt@amd.com m_dataCache_ptr = p->dcache; 736876Ssteve.reinhardt@amd.com m_max_outstanding_requests = p->max_outstanding_requests; 746876Ssteve.reinhardt@amd.com m_deadlock_threshold = p->deadlock_threshold; 756899SBrad.Beckmann@amd.com m_usingRubyTester = p->using_ruby_tester; 766899SBrad.Beckmann@amd.com 776876Ssteve.reinhardt@amd.com assert(m_max_outstanding_requests > 0); 786876Ssteve.reinhardt@amd.com assert(m_deadlock_threshold > 0); 796876Ssteve.reinhardt@amd.com assert(m_instCache_ptr != NULL); 806876Ssteve.reinhardt@amd.com assert(m_dataCache_ptr != NULL); 816145Snate@binkert.org} 826145Snate@binkert.org 837039Snate@binkert.orgSequencer::~Sequencer() 847039Snate@binkert.org{ 856145Snate@binkert.org} 866145Snate@binkert.org 877039Snate@binkert.orgvoid 887039Snate@binkert.orgSequencer::wakeup() 897039Snate@binkert.org{ 907039Snate@binkert.org // Check for deadlock of any of the requests 917039Snate@binkert.org Time current_time = g_eventQueue_ptr->getTime(); 926145Snate@binkert.org 937039Snate@binkert.org // Check across all outstanding requests 947039Snate@binkert.org int total_outstanding = 0; 956285Snate@binkert.org 967455Snate@binkert.org RequestTable::iterator read = m_readRequestTable.begin(); 977455Snate@binkert.org RequestTable::iterator read_end = m_readRequestTable.end(); 987455Snate@binkert.org for (; read != read_end; ++read) { 997455Snate@binkert.org SequencerRequest* request = read->second; 1007455Snate@binkert.org if (current_time - request->issue_time < m_deadlock_threshold) 1017455Snate@binkert.org continue; 1027455Snate@binkert.org 1037805Snilay@cs.wisc.edu panic("Possible Deadlock detected. Aborting!\n" 1047805Snilay@cs.wisc.edu "version: %d request.paddr: %d m_readRequestTable: %d " 1057805Snilay@cs.wisc.edu "current time: %u issue_time: %d difference: %d\n", m_version, 1067805Snilay@cs.wisc.edu request->ruby_request.paddr, m_readRequestTable.size(), 1077805Snilay@cs.wisc.edu current_time, request->issue_time, 1087805Snilay@cs.wisc.edu current_time - request->issue_time); 1096145Snate@binkert.org } 1106145Snate@binkert.org 1117455Snate@binkert.org RequestTable::iterator write = m_writeRequestTable.begin(); 1127455Snate@binkert.org RequestTable::iterator write_end = m_writeRequestTable.end(); 1137455Snate@binkert.org for (; write != write_end; ++write) { 1147455Snate@binkert.org SequencerRequest* request = write->second; 1157455Snate@binkert.org if (current_time - request->issue_time < m_deadlock_threshold) 1167455Snate@binkert.org continue; 1177455Snate@binkert.org 1187805Snilay@cs.wisc.edu panic("Possible Deadlock detected. Aborting!\n" 1197805Snilay@cs.wisc.edu "version: %d request.paddr: %d m_writeRequestTable: %d " 1207805Snilay@cs.wisc.edu "current time: %u issue_time: %d difference: %d\n", m_version, 1217805Snilay@cs.wisc.edu request->ruby_request.paddr, m_writeRequestTable.size(), 1227805Snilay@cs.wisc.edu current_time, request->issue_time, 1237805Snilay@cs.wisc.edu current_time - request->issue_time); 1246145Snate@binkert.org } 1256285Snate@binkert.org 1267039Snate@binkert.org total_outstanding += m_writeRequestTable.size(); 1277039Snate@binkert.org total_outstanding += m_readRequestTable.size(); 1286145Snate@binkert.org 1297039Snate@binkert.org assert(m_outstanding_count == total_outstanding); 1307039Snate@binkert.org 1317039Snate@binkert.org if (m_outstanding_count > 0) { 1327039Snate@binkert.org // If there are still outstanding requests, keep checking 1337039Snate@binkert.org schedule(deadlockCheckEvent, 1347039Snate@binkert.org m_deadlock_threshold * g_eventQueue_ptr->getClock() + 1357823Ssteve.reinhardt@amd.com curTick()); 1367039Snate@binkert.org } 1376145Snate@binkert.org} 1386145Snate@binkert.org 1397039Snate@binkert.orgvoid 1407039Snate@binkert.orgSequencer::printStats(ostream & out) const 1417039Snate@binkert.org{ 1427039Snate@binkert.org out << "Sequencer: " << m_name << endl 1437039Snate@binkert.org << " store_waiting_on_load_cycles: " 1447039Snate@binkert.org << m_store_waiting_on_load_cycles << endl 1457039Snate@binkert.org << " store_waiting_on_store_cycles: " 1467039Snate@binkert.org << m_store_waiting_on_store_cycles << endl 1477039Snate@binkert.org << " load_waiting_on_load_cycles: " 1487039Snate@binkert.org << m_load_waiting_on_load_cycles << endl 1497039Snate@binkert.org << " load_waiting_on_store_cycles: " 1507039Snate@binkert.org << m_load_waiting_on_store_cycles << endl; 1516859Sdrh5@cs.wisc.edu} 1526859Sdrh5@cs.wisc.edu 1537039Snate@binkert.orgvoid 1547039Snate@binkert.orgSequencer::printProgress(ostream& out) const 1557039Snate@binkert.org{ 1567039Snate@binkert.org#if 0 1577039Snate@binkert.org int total_demand = 0; 1587039Snate@binkert.org out << "Sequencer Stats Version " << m_version << endl; 1597039Snate@binkert.org out << "Current time = " << g_eventQueue_ptr->getTime() << endl; 1607039Snate@binkert.org out << "---------------" << endl; 1617039Snate@binkert.org out << "outstanding requests" << endl; 1626145Snate@binkert.org 1637455Snate@binkert.org out << "proc " << m_Read 1647455Snate@binkert.org << " version Requests = " << m_readRequestTable.size() << endl; 1656145Snate@binkert.org 1667039Snate@binkert.org // print the request table 1677455Snate@binkert.org RequestTable::iterator read = m_readRequestTable.begin(); 1687455Snate@binkert.org RequestTable::iterator read_end = m_readRequestTable.end(); 1697455Snate@binkert.org for (; read != read_end; ++read) { 1707455Snate@binkert.org SequencerRequest* request = read->second; 1717039Snate@binkert.org out << "\tRequest[ " << i << " ] = " << request->type 1727039Snate@binkert.org << " Address " << rkeys[i] 1737039Snate@binkert.org << " Posted " << request->issue_time 1747039Snate@binkert.org << " PF " << PrefetchBit_No << endl; 1756145Snate@binkert.org total_demand++; 1767039Snate@binkert.org } 1776145Snate@binkert.org 1787455Snate@binkert.org out << "proc " << m_version 1797455Snate@binkert.org << " Write Requests = " << m_writeRequestTable.size << endl; 1806285Snate@binkert.org 1817039Snate@binkert.org // print the request table 1827455Snate@binkert.org RequestTable::iterator write = m_writeRequestTable.begin(); 1837455Snate@binkert.org RequestTable::iterator write_end = m_writeRequestTable.end(); 1847455Snate@binkert.org for (; write != write_end; ++write) { 1857455Snate@binkert.org SequencerRequest* request = write->second; 1867039Snate@binkert.org out << "\tRequest[ " << i << " ] = " << request.getType() 1877039Snate@binkert.org << " Address " << wkeys[i] 1887039Snate@binkert.org << " Posted " << request.getTime() 1897039Snate@binkert.org << " PF " << request.getPrefetch() << endl; 1907039Snate@binkert.org if (request.getPrefetch() == PrefetchBit_No) { 1917039Snate@binkert.org total_demand++; 1927039Snate@binkert.org } 1937039Snate@binkert.org } 1947039Snate@binkert.org 1957039Snate@binkert.org out << endl; 1967039Snate@binkert.org 1977039Snate@binkert.org out << "Total Number Outstanding: " << m_outstanding_count << endl 1987039Snate@binkert.org << "Total Number Demand : " << total_demand << endl 1997039Snate@binkert.org << "Total Number Prefetches : " << m_outstanding_count - total_demand 2007039Snate@binkert.org << endl << endl << endl; 2017039Snate@binkert.org#endif 2026145Snate@binkert.org} 2036145Snate@binkert.org 2047039Snate@binkert.orgvoid 2057039Snate@binkert.orgSequencer::printConfig(ostream& out) const 2067039Snate@binkert.org{ 2077039Snate@binkert.org out << "Seqeuncer config: " << m_name << endl 2087039Snate@binkert.org << " controller: " << m_controller->getName() << endl 2097039Snate@binkert.org << " version: " << m_version << endl 2107039Snate@binkert.org << " max_outstanding_requests: " << m_max_outstanding_requests << endl 2117039Snate@binkert.org << " deadlock_threshold: " << m_deadlock_threshold << endl; 2126145Snate@binkert.org} 2136145Snate@binkert.org 2146145Snate@binkert.org// Insert the request on the correct request table. Return true if 2156145Snate@binkert.org// the entry was already present. 2167039Snate@binkert.orgbool 2177039Snate@binkert.orgSequencer::insertRequest(SequencerRequest* request) 2187039Snate@binkert.org{ 2197039Snate@binkert.org int total_outstanding = 2207039Snate@binkert.org m_writeRequestTable.size() + m_readRequestTable.size(); 2216285Snate@binkert.org 2227039Snate@binkert.org assert(m_outstanding_count == total_outstanding); 2236145Snate@binkert.org 2247039Snate@binkert.org // See if we should schedule a deadlock check 2257039Snate@binkert.org if (deadlockCheckEvent.scheduled() == false) { 2267823Ssteve.reinhardt@amd.com schedule(deadlockCheckEvent, m_deadlock_threshold + curTick()); 2277039Snate@binkert.org } 2286145Snate@binkert.org 2297039Snate@binkert.org Address line_addr(request->ruby_request.paddr); 2307039Snate@binkert.org line_addr.makeLineAddress(); 2317039Snate@binkert.org if ((request->ruby_request.type == RubyRequestType_ST) || 2327039Snate@binkert.org (request->ruby_request.type == RubyRequestType_RMW_Read) || 2337039Snate@binkert.org (request->ruby_request.type == RubyRequestType_RMW_Write) || 2347039Snate@binkert.org (request->ruby_request.type == RubyRequestType_Locked_Read) || 2357039Snate@binkert.org (request->ruby_request.type == RubyRequestType_Locked_Write)) { 2367455Snate@binkert.org pair<RequestTable::iterator, bool> r = 2377455Snate@binkert.org m_writeRequestTable.insert(RequestTable::value_type(line_addr, 0)); 2387455Snate@binkert.org bool success = r.second; 2397455Snate@binkert.org RequestTable::iterator i = r.first; 2407455Snate@binkert.org if (!success) { 2417455Snate@binkert.org i->second = request; 2427039Snate@binkert.org // return true; 2437039Snate@binkert.org 2447039Snate@binkert.org // drh5: isn't this an error? do you lose the initial request? 2457039Snate@binkert.org assert(0); 2467039Snate@binkert.org } 2477455Snate@binkert.org i->second = request; 2487039Snate@binkert.org m_outstanding_count++; 2497039Snate@binkert.org } else { 2507455Snate@binkert.org pair<RequestTable::iterator, bool> r = 2517455Snate@binkert.org m_readRequestTable.insert(RequestTable::value_type(line_addr, 0)); 2527455Snate@binkert.org bool success = r.second; 2537455Snate@binkert.org RequestTable::iterator i = r.first; 2547455Snate@binkert.org if (!success) { 2557455Snate@binkert.org i->second = request; 2567039Snate@binkert.org // return true; 2577039Snate@binkert.org 2587039Snate@binkert.org // drh5: isn't this an error? do you lose the initial request? 2597039Snate@binkert.org assert(0); 2607039Snate@binkert.org } 2617455Snate@binkert.org i->second = request; 2627039Snate@binkert.org m_outstanding_count++; 2636145Snate@binkert.org } 2646145Snate@binkert.org 2657039Snate@binkert.org g_system_ptr->getProfiler()->sequencerRequests(m_outstanding_count); 2666145Snate@binkert.org 2677039Snate@binkert.org total_outstanding = m_writeRequestTable.size() + m_readRequestTable.size(); 2687039Snate@binkert.org assert(m_outstanding_count == total_outstanding); 2696145Snate@binkert.org 2707039Snate@binkert.org return false; 2716145Snate@binkert.org} 2726145Snate@binkert.org 2737039Snate@binkert.orgvoid 2747455Snate@binkert.orgSequencer::markRemoved() 2757455Snate@binkert.org{ 2767455Snate@binkert.org m_outstanding_count--; 2777455Snate@binkert.org assert(m_outstanding_count == 2787455Snate@binkert.org m_writeRequestTable.size() + m_readRequestTable.size()); 2797455Snate@binkert.org} 2807455Snate@binkert.org 2817455Snate@binkert.orgvoid 2827039Snate@binkert.orgSequencer::removeRequest(SequencerRequest* srequest) 2837039Snate@binkert.org{ 2847039Snate@binkert.org assert(m_outstanding_count == 2857039Snate@binkert.org m_writeRequestTable.size() + m_readRequestTable.size()); 2866145Snate@binkert.org 2877039Snate@binkert.org const RubyRequest & ruby_request = srequest->ruby_request; 2887039Snate@binkert.org Address line_addr(ruby_request.paddr); 2897039Snate@binkert.org line_addr.makeLineAddress(); 2907039Snate@binkert.org if ((ruby_request.type == RubyRequestType_ST) || 2917039Snate@binkert.org (ruby_request.type == RubyRequestType_RMW_Read) || 2927039Snate@binkert.org (ruby_request.type == RubyRequestType_RMW_Write) || 2937039Snate@binkert.org (ruby_request.type == RubyRequestType_Locked_Read) || 2947039Snate@binkert.org (ruby_request.type == RubyRequestType_Locked_Write)) { 2957455Snate@binkert.org m_writeRequestTable.erase(line_addr); 2967039Snate@binkert.org } else { 2977455Snate@binkert.org m_readRequestTable.erase(line_addr); 2987039Snate@binkert.org } 2996285Snate@binkert.org 3007455Snate@binkert.org markRemoved(); 3016145Snate@binkert.org} 3026145Snate@binkert.org 3037560SBrad.Beckmann@amd.combool 3047560SBrad.Beckmann@amd.comSequencer::handleLlsc(const Address& address, SequencerRequest* request) 3057550SBrad.Beckmann@amd.com{ 3067560SBrad.Beckmann@amd.com // 3077560SBrad.Beckmann@amd.com // The success flag indicates whether the LLSC operation was successful. 3087560SBrad.Beckmann@amd.com // LL ops will always succeed, but SC may fail if the cache line is no 3097560SBrad.Beckmann@amd.com // longer locked. 3107560SBrad.Beckmann@amd.com // 3117560SBrad.Beckmann@amd.com bool success = true; 3127550SBrad.Beckmann@amd.com if (request->ruby_request.type == RubyRequestType_Locked_Write) { 3137550SBrad.Beckmann@amd.com if (!m_dataCache_ptr->isLocked(address, m_version)) { 3147550SBrad.Beckmann@amd.com // 3157550SBrad.Beckmann@amd.com // For failed SC requests, indicate the failure to the cpu by 3167550SBrad.Beckmann@amd.com // setting the extra data to zero. 3177550SBrad.Beckmann@amd.com // 3187550SBrad.Beckmann@amd.com request->ruby_request.pkt->req->setExtraData(0); 3197560SBrad.Beckmann@amd.com success = false; 3207550SBrad.Beckmann@amd.com } else { 3217550SBrad.Beckmann@amd.com // 3227550SBrad.Beckmann@amd.com // For successful SC requests, indicate the success to the cpu by 3237550SBrad.Beckmann@amd.com // setting the extra data to one. 3247550SBrad.Beckmann@amd.com // 3257550SBrad.Beckmann@amd.com request->ruby_request.pkt->req->setExtraData(1); 3267550SBrad.Beckmann@amd.com } 3277560SBrad.Beckmann@amd.com // 3287560SBrad.Beckmann@amd.com // Independent of success, all SC operations must clear the lock 3297560SBrad.Beckmann@amd.com // 3307550SBrad.Beckmann@amd.com m_dataCache_ptr->clearLocked(address); 3317550SBrad.Beckmann@amd.com } else if (request->ruby_request.type == RubyRequestType_Locked_Read) { 3327550SBrad.Beckmann@amd.com // 3337550SBrad.Beckmann@amd.com // Note: To fully follow Alpha LLSC semantics, should the LL clear any 3347550SBrad.Beckmann@amd.com // previously locked cache lines? 3357550SBrad.Beckmann@amd.com // 3367550SBrad.Beckmann@amd.com m_dataCache_ptr->setLocked(address, m_version); 3377550SBrad.Beckmann@amd.com } else if (m_dataCache_ptr->isLocked(address, m_version)) { 3387550SBrad.Beckmann@amd.com // 3397550SBrad.Beckmann@amd.com // Normal writes should clear the locked address 3407550SBrad.Beckmann@amd.com // 3417550SBrad.Beckmann@amd.com m_dataCache_ptr->clearLocked(address); 3427550SBrad.Beckmann@amd.com } 3437560SBrad.Beckmann@amd.com return success; 3447550SBrad.Beckmann@amd.com} 3457550SBrad.Beckmann@amd.com 3467550SBrad.Beckmann@amd.comvoid 3477039Snate@binkert.orgSequencer::writeCallback(const Address& address, DataBlock& data) 3487039Snate@binkert.org{ 3497546SBrad.Beckmann@amd.com writeCallback(address, GenericMachineType_NULL, data); 3507546SBrad.Beckmann@amd.com} 3517546SBrad.Beckmann@amd.com 3527546SBrad.Beckmann@amd.comvoid 3537546SBrad.Beckmann@amd.comSequencer::writeCallback(const Address& address, 3547546SBrad.Beckmann@amd.com GenericMachineType mach, 3557546SBrad.Beckmann@amd.com DataBlock& data) 3567546SBrad.Beckmann@amd.com{ 3577565SBrad.Beckmann@amd.com writeCallback(address, mach, data, 0, 0, 0); 3587565SBrad.Beckmann@amd.com} 3597565SBrad.Beckmann@amd.com 3607565SBrad.Beckmann@amd.comvoid 3617565SBrad.Beckmann@amd.comSequencer::writeCallback(const Address& address, 3627565SBrad.Beckmann@amd.com GenericMachineType mach, 3637565SBrad.Beckmann@amd.com DataBlock& data, 3647565SBrad.Beckmann@amd.com Time initialRequestTime, 3657565SBrad.Beckmann@amd.com Time forwardRequestTime, 3667565SBrad.Beckmann@amd.com Time firstResponseTime) 3677565SBrad.Beckmann@amd.com{ 3687039Snate@binkert.org assert(address == line_address(address)); 3697455Snate@binkert.org assert(m_writeRequestTable.count(line_address(address))); 3706145Snate@binkert.org 3717455Snate@binkert.org RequestTable::iterator i = m_writeRequestTable.find(address); 3727455Snate@binkert.org assert(i != m_writeRequestTable.end()); 3737455Snate@binkert.org SequencerRequest* request = i->second; 3746145Snate@binkert.org 3757455Snate@binkert.org m_writeRequestTable.erase(i); 3767455Snate@binkert.org markRemoved(); 3776846Spdudnik@cs.wisc.edu 3787039Snate@binkert.org assert((request->ruby_request.type == RubyRequestType_ST) || 3797039Snate@binkert.org (request->ruby_request.type == RubyRequestType_RMW_Read) || 3807039Snate@binkert.org (request->ruby_request.type == RubyRequestType_RMW_Write) || 3817039Snate@binkert.org (request->ruby_request.type == RubyRequestType_Locked_Read) || 3827039Snate@binkert.org (request->ruby_request.type == RubyRequestType_Locked_Write)); 3836145Snate@binkert.org 3847550SBrad.Beckmann@amd.com // 3857550SBrad.Beckmann@amd.com // For Alpha, properly handle LL, SC, and write requests with respect to 3867550SBrad.Beckmann@amd.com // locked cache blocks. 3877550SBrad.Beckmann@amd.com // 3887560SBrad.Beckmann@amd.com bool success = handleLlsc(address, request); 3897550SBrad.Beckmann@amd.com 3907550SBrad.Beckmann@amd.com if (request->ruby_request.type == RubyRequestType_RMW_Read) { 3917039Snate@binkert.org m_controller->blockOnQueue(address, m_mandatory_q_ptr); 3927039Snate@binkert.org } else if (request->ruby_request.type == RubyRequestType_RMW_Write) { 3937039Snate@binkert.org m_controller->unblock(address); 3947039Snate@binkert.org } 3956863Sdrh5@cs.wisc.edu 3967565SBrad.Beckmann@amd.com hitCallback(request, mach, data, success, 3977565SBrad.Beckmann@amd.com initialRequestTime, forwardRequestTime, firstResponseTime); 3986145Snate@binkert.org} 3996145Snate@binkert.org 4007039Snate@binkert.orgvoid 4017039Snate@binkert.orgSequencer::readCallback(const Address& address, DataBlock& data) 4027039Snate@binkert.org{ 4037546SBrad.Beckmann@amd.com readCallback(address, GenericMachineType_NULL, data); 4047546SBrad.Beckmann@amd.com} 4057546SBrad.Beckmann@amd.com 4067546SBrad.Beckmann@amd.comvoid 4077546SBrad.Beckmann@amd.comSequencer::readCallback(const Address& address, 4087546SBrad.Beckmann@amd.com GenericMachineType mach, 4097546SBrad.Beckmann@amd.com DataBlock& data) 4107546SBrad.Beckmann@amd.com{ 4117565SBrad.Beckmann@amd.com readCallback(address, mach, data, 0, 0, 0); 4127565SBrad.Beckmann@amd.com} 4137565SBrad.Beckmann@amd.com 4147565SBrad.Beckmann@amd.comvoid 4157565SBrad.Beckmann@amd.comSequencer::readCallback(const Address& address, 4167565SBrad.Beckmann@amd.com GenericMachineType mach, 4177565SBrad.Beckmann@amd.com DataBlock& data, 4187565SBrad.Beckmann@amd.com Time initialRequestTime, 4197565SBrad.Beckmann@amd.com Time forwardRequestTime, 4207565SBrad.Beckmann@amd.com Time firstResponseTime) 4217565SBrad.Beckmann@amd.com{ 4227039Snate@binkert.org assert(address == line_address(address)); 4237455Snate@binkert.org assert(m_readRequestTable.count(line_address(address))); 4246145Snate@binkert.org 4257455Snate@binkert.org RequestTable::iterator i = m_readRequestTable.find(address); 4267455Snate@binkert.org assert(i != m_readRequestTable.end()); 4277455Snate@binkert.org SequencerRequest* request = i->second; 4287455Snate@binkert.org 4297455Snate@binkert.org m_readRequestTable.erase(i); 4307455Snate@binkert.org markRemoved(); 4316145Snate@binkert.org 4327039Snate@binkert.org assert((request->ruby_request.type == RubyRequestType_LD) || 4337039Snate@binkert.org (request->ruby_request.type == RubyRequestType_RMW_Read) || 4347039Snate@binkert.org (request->ruby_request.type == RubyRequestType_IFETCH)); 4356285Snate@binkert.org 4367565SBrad.Beckmann@amd.com hitCallback(request, mach, data, true, 4377565SBrad.Beckmann@amd.com initialRequestTime, forwardRequestTime, firstResponseTime); 4386145Snate@binkert.org} 4396145Snate@binkert.org 4407039Snate@binkert.orgvoid 4417546SBrad.Beckmann@amd.comSequencer::hitCallback(SequencerRequest* srequest, 4427546SBrad.Beckmann@amd.com GenericMachineType mach, 4437560SBrad.Beckmann@amd.com DataBlock& data, 4447565SBrad.Beckmann@amd.com bool success, 4457565SBrad.Beckmann@amd.com Time initialRequestTime, 4467565SBrad.Beckmann@amd.com Time forwardRequestTime, 4477565SBrad.Beckmann@amd.com Time firstResponseTime) 4487039Snate@binkert.org{ 4497039Snate@binkert.org const RubyRequest & ruby_request = srequest->ruby_request; 4507039Snate@binkert.org Address request_address(ruby_request.paddr); 4517039Snate@binkert.org Address request_line_address(ruby_request.paddr); 4527039Snate@binkert.org request_line_address.makeLineAddress(); 4537039Snate@binkert.org RubyRequestType type = ruby_request.type; 4547039Snate@binkert.org Time issued_time = srequest->issue_time; 4556145Snate@binkert.org 4567039Snate@binkert.org // Set this cache entry to the most recently used 4577039Snate@binkert.org if (type == RubyRequestType_IFETCH) { 4587039Snate@binkert.org if (m_instCache_ptr->isTagPresent(request_line_address)) 4597039Snate@binkert.org m_instCache_ptr->setMRU(request_line_address); 4607039Snate@binkert.org } else { 4617039Snate@binkert.org if (m_dataCache_ptr->isTagPresent(request_line_address)) 4627039Snate@binkert.org m_dataCache_ptr->setMRU(request_line_address); 4637039Snate@binkert.org } 4646145Snate@binkert.org 4657039Snate@binkert.org assert(g_eventQueue_ptr->getTime() >= issued_time); 4667039Snate@binkert.org Time miss_latency = g_eventQueue_ptr->getTime() - issued_time; 4676145Snate@binkert.org 4687039Snate@binkert.org // Profile the miss latency for all non-zero demand misses 4697039Snate@binkert.org if (miss_latency != 0) { 4707546SBrad.Beckmann@amd.com g_system_ptr->getProfiler()->missLatency(miss_latency, type, mach); 4716285Snate@binkert.org 4727565SBrad.Beckmann@amd.com if (mach == GenericMachineType_L1Cache_wCC) { 4737565SBrad.Beckmann@amd.com g_system_ptr->getProfiler()->missLatencyWcc(issued_time, 4747565SBrad.Beckmann@amd.com initialRequestTime, 4757565SBrad.Beckmann@amd.com forwardRequestTime, 4767565SBrad.Beckmann@amd.com firstResponseTime, 4777565SBrad.Beckmann@amd.com g_eventQueue_ptr->getTime()); 4787565SBrad.Beckmann@amd.com } 4797565SBrad.Beckmann@amd.com 4807565SBrad.Beckmann@amd.com if (mach == GenericMachineType_Directory) { 4817565SBrad.Beckmann@amd.com g_system_ptr->getProfiler()->missLatencyDir(issued_time, 4827565SBrad.Beckmann@amd.com initialRequestTime, 4837565SBrad.Beckmann@amd.com forwardRequestTime, 4847565SBrad.Beckmann@amd.com firstResponseTime, 4857565SBrad.Beckmann@amd.com g_eventQueue_ptr->getTime()); 4867565SBrad.Beckmann@amd.com } 4877565SBrad.Beckmann@amd.com 4887832Snate@binkert.org DPRINTFR(ProtocolTrace, "%7s %3s %10s%20s %6s>%-6s %s %d cycles\n", 4897832Snate@binkert.org g_eventQueue_ptr->getTime(), m_version, "Seq", 4907832Snate@binkert.org success ? "Done" : "SC_Failed", "", "", 4917832Snate@binkert.org Address(ruby_request.paddr), miss_latency); 4926285Snate@binkert.org } 4937039Snate@binkert.org#if 0 4947039Snate@binkert.org if (request.getPrefetch() == PrefetchBit_Yes) { 4957039Snate@binkert.org return; // Ignore the prefetch 4967039Snate@binkert.org } 4977039Snate@binkert.org#endif 4986285Snate@binkert.org 4997039Snate@binkert.org // update the data 5007039Snate@binkert.org if (ruby_request.data != NULL) { 5017039Snate@binkert.org if ((type == RubyRequestType_LD) || 5027039Snate@binkert.org (type == RubyRequestType_IFETCH) || 5037039Snate@binkert.org (type == RubyRequestType_RMW_Read) || 5047039Snate@binkert.org (type == RubyRequestType_Locked_Read)) { 5057023SBrad.Beckmann@amd.com 5067039Snate@binkert.org memcpy(ruby_request.data, 5077039Snate@binkert.org data.getData(request_address.getOffset(), ruby_request.len), 5087039Snate@binkert.org ruby_request.len); 5097039Snate@binkert.org } else { 5107039Snate@binkert.org data.setData(ruby_request.data, request_address.getOffset(), 5117039Snate@binkert.org ruby_request.len); 5127039Snate@binkert.org } 5136285Snate@binkert.org } else { 5147039Snate@binkert.org DPRINTF(MemoryAccess, 5157039Snate@binkert.org "WARNING. Data not transfered from Ruby to M5 for type %s\n", 5167039Snate@binkert.org RubyRequestType_to_string(type)); 5177039Snate@binkert.org } 5187023SBrad.Beckmann@amd.com 5197039Snate@binkert.org // If using the RubyTester, update the RubyTester sender state's 5207039Snate@binkert.org // subBlock with the recieved data. The tester will later access 5217039Snate@binkert.org // this state. 5227039Snate@binkert.org // Note: RubyPort will access it's sender state before the 5237039Snate@binkert.org // RubyTester. 5247039Snate@binkert.org if (m_usingRubyTester) { 5257039Snate@binkert.org RubyPort::SenderState *requestSenderState = 5267039Snate@binkert.org safe_cast<RubyPort::SenderState*>(ruby_request.pkt->senderState); 5277039Snate@binkert.org RubyTester::SenderState* testerSenderState = 5287039Snate@binkert.org safe_cast<RubyTester::SenderState*>(requestSenderState->saved); 5297039Snate@binkert.org testerSenderState->subBlock->mergeFrom(data); 5307039Snate@binkert.org } 5317023SBrad.Beckmann@amd.com 5327039Snate@binkert.org ruby_hit_callback(ruby_request.pkt); 5337039Snate@binkert.org delete srequest; 5346285Snate@binkert.org} 5356285Snate@binkert.org 5366285Snate@binkert.org// Returns true if the sequencer already has a load or store outstanding 5377039Snate@binkert.orgRequestStatus 5387039Snate@binkert.orgSequencer::getRequestStatus(const RubyRequest& request) 5397039Snate@binkert.org{ 5407039Snate@binkert.org bool is_outstanding_store = 5417455Snate@binkert.org !!m_writeRequestTable.count(line_address(Address(request.paddr))); 5427039Snate@binkert.org bool is_outstanding_load = 5437455Snate@binkert.org !!m_readRequestTable.count(line_address(Address(request.paddr))); 5447039Snate@binkert.org if (is_outstanding_store) { 5457039Snate@binkert.org if ((request.type == RubyRequestType_LD) || 5467039Snate@binkert.org (request.type == RubyRequestType_IFETCH) || 5477039Snate@binkert.org (request.type == RubyRequestType_RMW_Read)) { 5487039Snate@binkert.org m_store_waiting_on_load_cycles++; 5497039Snate@binkert.org } else { 5507039Snate@binkert.org m_store_waiting_on_store_cycles++; 5517039Snate@binkert.org } 5527039Snate@binkert.org return RequestStatus_Aliased; 5537039Snate@binkert.org } else if (is_outstanding_load) { 5547039Snate@binkert.org if ((request.type == RubyRequestType_ST) || 5557039Snate@binkert.org (request.type == RubyRequestType_RMW_Write)) { 5567039Snate@binkert.org m_load_waiting_on_store_cycles++; 5577039Snate@binkert.org } else { 5587039Snate@binkert.org m_load_waiting_on_load_cycles++; 5597039Snate@binkert.org } 5607039Snate@binkert.org return RequestStatus_Aliased; 5616859Sdrh5@cs.wisc.edu } 5627039Snate@binkert.org 5637039Snate@binkert.org if (m_outstanding_count >= m_max_outstanding_requests) { 5647039Snate@binkert.org return RequestStatus_BufferFull; 5656859Sdrh5@cs.wisc.edu } 5666145Snate@binkert.org 5677039Snate@binkert.org return RequestStatus_Ready; 5686145Snate@binkert.org} 5696145Snate@binkert.org 5707039Snate@binkert.orgbool 5717039Snate@binkert.orgSequencer::empty() const 5727039Snate@binkert.org{ 5737455Snate@binkert.org return m_writeRequestTable.empty() && m_readRequestTable.empty(); 5746145Snate@binkert.org} 5756145Snate@binkert.org 5767039Snate@binkert.orgRequestStatus 5777039Snate@binkert.orgSequencer::makeRequest(const RubyRequest &request) 5787039Snate@binkert.org{ 5797039Snate@binkert.org assert(Address(request.paddr).getOffset() + request.len <= 5807039Snate@binkert.org RubySystem::getBlockSizeBytes()); 5817039Snate@binkert.org RequestStatus status = getRequestStatus(request); 5827039Snate@binkert.org if (status != RequestStatus_Ready) 5837039Snate@binkert.org return status; 5846349Spdudnik@gmail.com 5857039Snate@binkert.org SequencerRequest *srequest = 5867039Snate@binkert.org new SequencerRequest(request, g_eventQueue_ptr->getTime()); 5876285Snate@binkert.org bool found = insertRequest(srequest); 5887039Snate@binkert.org if (found) { 5897039Snate@binkert.org panic("Sequencer::makeRequest should never be called if the " 5907039Snate@binkert.org "request is already outstanding\n"); 5917039Snate@binkert.org return RequestStatus_NULL; 5927039Snate@binkert.org } 5937023SBrad.Beckmann@amd.com 5947039Snate@binkert.org issueRequest(request); 5956145Snate@binkert.org 5967039Snate@binkert.org // TODO: issue hardware prefetches here 5977039Snate@binkert.org return RequestStatus_Issued; 5986145Snate@binkert.org} 5996145Snate@binkert.org 6007039Snate@binkert.orgvoid 6017039Snate@binkert.orgSequencer::issueRequest(const RubyRequest& request) 6027039Snate@binkert.org{ 6037039Snate@binkert.org // TODO: get rid of CacheMsg, CacheRequestType, and 6047039Snate@binkert.org // AccessModeTYpe, & have SLICC use RubyRequest and subtypes 6057039Snate@binkert.org // natively 6067039Snate@binkert.org CacheRequestType ctype; 6077039Snate@binkert.org switch(request.type) { 6087039Snate@binkert.org case RubyRequestType_IFETCH: 6097039Snate@binkert.org ctype = CacheRequestType_IFETCH; 6107039Snate@binkert.org break; 6117039Snate@binkert.org case RubyRequestType_LD: 6127039Snate@binkert.org ctype = CacheRequestType_LD; 6137039Snate@binkert.org break; 6147039Snate@binkert.org case RubyRequestType_ST: 6157039Snate@binkert.org ctype = CacheRequestType_ST; 6167039Snate@binkert.org break; 6177039Snate@binkert.org case RubyRequestType_Locked_Read: 6187039Snate@binkert.org case RubyRequestType_Locked_Write: 6197039Snate@binkert.org ctype = CacheRequestType_ATOMIC; 6207039Snate@binkert.org break; 6217039Snate@binkert.org case RubyRequestType_RMW_Read: 6227039Snate@binkert.org ctype = CacheRequestType_ATOMIC; 6237039Snate@binkert.org break; 6247039Snate@binkert.org case RubyRequestType_RMW_Write: 6257039Snate@binkert.org ctype = CacheRequestType_ATOMIC; 6267039Snate@binkert.org break; 6277039Snate@binkert.org default: 6287039Snate@binkert.org assert(0); 6297039Snate@binkert.org } 6306285Snate@binkert.org 6317039Snate@binkert.org AccessModeType amtype; 6327039Snate@binkert.org switch(request.access_mode){ 6337039Snate@binkert.org case RubyAccessMode_User: 6347039Snate@binkert.org amtype = AccessModeType_UserMode; 6357039Snate@binkert.org break; 6367039Snate@binkert.org case RubyAccessMode_Supervisor: 6377039Snate@binkert.org amtype = AccessModeType_SupervisorMode; 6387039Snate@binkert.org break; 6397039Snate@binkert.org case RubyAccessMode_Device: 6407039Snate@binkert.org amtype = AccessModeType_UserMode; 6417039Snate@binkert.org break; 6427039Snate@binkert.org default: 6437039Snate@binkert.org assert(0); 6447039Snate@binkert.org } 6456285Snate@binkert.org 6467039Snate@binkert.org Address line_addr(request.paddr); 6477039Snate@binkert.org line_addr.makeLineAddress(); 6487453Snate@binkert.org CacheMsg *msg = new CacheMsg(line_addr, Address(request.paddr), ctype, 6497453Snate@binkert.org Address(request.pc), amtype, request.len, PrefetchBit_No, 6507453Snate@binkert.org request.proc_id); 6516285Snate@binkert.org 6527832Snate@binkert.org DPRINTFR(ProtocolTrace, "%7s %3s %10s%20s %6s>%-6s %s %s\n", 6537832Snate@binkert.org g_eventQueue_ptr->getTime(), m_version, "Seq", "Begin", "", "", 6547832Snate@binkert.org Address(request.paddr), RubyRequestType_to_string(request.type)); 6556285Snate@binkert.org 6567039Snate@binkert.org Time latency = 0; // initialzed to an null value 6576285Snate@binkert.org 6587039Snate@binkert.org if (request.type == RubyRequestType_IFETCH) 6597039Snate@binkert.org latency = m_instCache_ptr->getLatency(); 6607039Snate@binkert.org else 6617039Snate@binkert.org latency = m_dataCache_ptr->getLatency(); 6626285Snate@binkert.org 6637039Snate@binkert.org // Send the message to the cache controller 6647039Snate@binkert.org assert(latency > 0); 6656145Snate@binkert.org 6667039Snate@binkert.org assert(m_mandatory_q_ptr != NULL); 6677039Snate@binkert.org m_mandatory_q_ptr->enqueue(msg, latency); 6686145Snate@binkert.org} 6696145Snate@binkert.org 6707039Snate@binkert.org#if 0 6717039Snate@binkert.orgbool 6727039Snate@binkert.orgSequencer::tryCacheAccess(const Address& addr, CacheRequestType type, 6737039Snate@binkert.org AccessModeType access_mode, 6747039Snate@binkert.org int size, DataBlock*& data_ptr) 6757039Snate@binkert.org{ 6767039Snate@binkert.org CacheMemory *cache = 6777039Snate@binkert.org (type == CacheRequestType_IFETCH) ? m_instCache_ptr : m_dataCache_ptr; 6787039Snate@binkert.org 6797039Snate@binkert.org return cache->tryCacheAccess(line_address(addr), type, data_ptr); 6807039Snate@binkert.org} 6817039Snate@binkert.org#endif 6827039Snate@binkert.org 6837455Snate@binkert.orgtemplate <class KEY, class VALUE> 6847455Snate@binkert.orgstd::ostream & 6857455Snate@binkert.orgoperator<<(ostream &out, const m5::hash_map<KEY, VALUE> &map) 6867455Snate@binkert.org{ 6877455Snate@binkert.org typename m5::hash_map<KEY, VALUE>::const_iterator i = map.begin(); 6887455Snate@binkert.org typename m5::hash_map<KEY, VALUE>::const_iterator end = map.end(); 6897455Snate@binkert.org 6907455Snate@binkert.org out << "["; 6917455Snate@binkert.org for (; i != end; ++i) 6927455Snate@binkert.org out << " " << i->first << "=" << i->second; 6937455Snate@binkert.org out << " ]"; 6947455Snate@binkert.org 6957455Snate@binkert.org return out; 6967455Snate@binkert.org} 6977455Snate@binkert.org 6987039Snate@binkert.orgvoid 6997039Snate@binkert.orgSequencer::print(ostream& out) const 7007039Snate@binkert.org{ 7017039Snate@binkert.org out << "[Sequencer: " << m_version 7027039Snate@binkert.org << ", outstanding requests: " << m_outstanding_count 7037039Snate@binkert.org << ", read request table: " << m_readRequestTable 7047039Snate@binkert.org << ", write request table: " << m_writeRequestTable 7057039Snate@binkert.org << "]"; 7067039Snate@binkert.org} 7077039Snate@binkert.org 7087039Snate@binkert.org// this can be called from setState whenever coherence permissions are 7097039Snate@binkert.org// upgraded when invoked, coherence violations will be checked for the 7107039Snate@binkert.org// given block 7117039Snate@binkert.orgvoid 7127039Snate@binkert.orgSequencer::checkCoherence(const Address& addr) 7137039Snate@binkert.org{ 7146145Snate@binkert.org#ifdef CHECK_COHERENCE 7157039Snate@binkert.org g_system_ptr->checkGlobalCoherenceInvariant(addr); 7166145Snate@binkert.org#endif 7176145Snate@binkert.org} 718