Check.cc revision 8832
1/* 2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 3 * Copyright (c) 2009 Advanced Micro Devices, Inc. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer; 10 * redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution; 13 * neither the name of the copyright holders nor the names of its 14 * contributors may be used to endorse or promote products derived from 15 * this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#include "cpu/testers/rubytest/Check.hh" 31#include "debug/RubyTest.hh" 32#include "mem/ruby/common/SubBlock.hh" 33#include "mem/ruby/system/Sequencer.hh" 34#include "mem/ruby/system/System.hh" 35 36typedef RubyTester::SenderState SenderState; 37 38Check::Check(const Address& address, const Address& pc, 39 int _num_cpu_sequencers, RubyTester* _tester) 40 : m_num_cpu_sequencers(_num_cpu_sequencers), m_tester_ptr(_tester) 41{ 42 m_status = TesterStatus_Idle; 43 44 pickValue(); 45 pickInitiatingNode(); 46 changeAddress(address); 47 m_pc = pc; 48 m_access_mode = RubyAccessMode(random() % RubyAccessMode_NUM); 49 m_store_count = 0; 50} 51 52void 53Check::initiate() 54{ 55 DPRINTF(RubyTest, "initiating\n"); 56 debugPrint(); 57 58 // currently no protocols support prefetches 59 if (false && (random() & 0xf) == 0) { 60 initiatePrefetch(); // Prefetch from random processor 61 } 62 63 if (m_tester_ptr->getCheckFlush() && (random() & 0xff) == 0) { 64 initiateFlush(); // issue a Flush request from random processor 65 } 66 67 if (m_status == TesterStatus_Idle) { 68 initiateAction(); 69 } else if (m_status == TesterStatus_Ready) { 70 initiateCheck(); 71 } else { 72 // Pending - do nothing 73 DPRINTF(RubyTest, 74 "initiating action/check - failed: action/check is pending\n"); 75 } 76} 77 78void 79Check::initiatePrefetch() 80{ 81 DPRINTF(RubyTest, "initiating prefetch\n"); 82 83 int index = random() % m_num_cpu_sequencers; 84 RubyTester::CpuPort* port = 85 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getCpuPort(index)); 86 87 Request::Flags flags; 88 flags.set(Request::PREFETCH); 89 90 Packet::Command cmd; 91 92 // 1 in 8 chance this will be an exclusive prefetch 93 if ((random() & 0x7) != 0) { 94 cmd = MemCmd::ReadReq; 95 96 // 50% chance that the request will be an instruction fetch 97 if ((random() & 0x1) == 0) { 98 flags.set(Request::INST_FETCH); 99 } 100 } else { 101 cmd = MemCmd::WriteReq; 102 flags.set(Request::PF_EXCLUSIVE); 103 } 104 105 // Prefetches are assumed to be 0 sized 106 Request *req = new Request(m_address.getAddress(), 0, flags, 107 m_tester_ptr->masterId(), curTick(), m_pc.getAddress()); 108 req->setThreadContext(index, 0); 109 110 PacketPtr pkt = new Packet(req, cmd, port->idx); 111 112 // push the subblock onto the sender state. The sequencer will 113 // update the subblock on the return 114 pkt->senderState = 115 new SenderState(m_address, req->getSize(), pkt->senderState); 116 117 if (port->sendTiming(pkt)) { 118 DPRINTF(RubyTest, "successfully initiated prefetch.\n"); 119 } else { 120 // If the packet did not issue, must delete 121 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 122 pkt->senderState = senderState->saved; 123 delete senderState; 124 delete pkt->req; 125 delete pkt; 126 127 DPRINTF(RubyTest, 128 "prefetch initiation failed because Port was busy.\n"); 129 } 130} 131 132void 133Check::initiateFlush() 134{ 135 136 DPRINTF(RubyTest, "initiating Flush\n"); 137 138 int index = random() % m_num_cpu_sequencers; 139 RubyTester::CpuPort* port = 140 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getCpuPort(index)); 141 142 Request::Flags flags; 143 144 Request *req = new Request(m_address.getAddress(), CHECK_SIZE, flags, 145 m_tester_ptr->masterId(), curTick(), m_pc.getAddress()); 146 147 Packet::Command cmd; 148 149 cmd = MemCmd::FlushReq; 150 151 PacketPtr pkt = new Packet(req, cmd, port->idx); 152 153 // push the subblock onto the sender state. The sequencer will 154 // update the subblock on the return 155 pkt->senderState = 156 new SenderState(m_address, req->getSize(), pkt->senderState); 157 158 if (port->sendTiming(pkt)) { 159 DPRINTF(RubyTest, "initiating Flush - successful\n"); 160 } 161} 162 163void 164Check::initiateAction() 165{ 166 DPRINTF(RubyTest, "initiating Action\n"); 167 assert(m_status == TesterStatus_Idle); 168 169 int index = random() % m_num_cpu_sequencers; 170 RubyTester::CpuPort* port = 171 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getCpuPort(index)); 172 173 Request::Flags flags; 174 175 // Create the particular address for the next byte to be written 176 Address writeAddr(m_address.getAddress() + m_store_count); 177 178 // Stores are assumed to be 1 byte-sized 179 Request *req = new Request(writeAddr.getAddress(), 1, flags, 180 m_tester_ptr->masterId(), curTick(), 181 m_pc.getAddress()); 182 183 req->setThreadContext(index, 0); 184 Packet::Command cmd; 185 186 // 1 out of 8 chance, issue an atomic rather than a write 187 // if ((random() & 0x7) == 0) { 188 // cmd = MemCmd::SwapReq; 189 // } else { 190 cmd = MemCmd::WriteReq; 191 // } 192 193 PacketPtr pkt = new Packet(req, cmd, port->idx); 194 uint8_t* writeData = new uint8_t; 195 *writeData = m_value + m_store_count; 196 pkt->dataDynamic(writeData); 197 198 DPRINTF(RubyTest, "data 0x%x check 0x%x\n", 199 *(pkt->getPtr<uint8_t>()), *writeData); 200 201 // push the subblock onto the sender state. The sequencer will 202 // update the subblock on the return 203 pkt->senderState = 204 new SenderState(writeAddr, req->getSize(), pkt->senderState); 205 206 if (port->sendTiming(pkt)) { 207 DPRINTF(RubyTest, "initiating action - successful\n"); 208 DPRINTF(RubyTest, "status before action update: %s\n", 209 (TesterStatus_to_string(m_status)).c_str()); 210 m_status = TesterStatus_Action_Pending; 211 } else { 212 // If the packet did not issue, must delete 213 // Note: No need to delete the data, the packet destructor 214 // will delete it 215 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 216 pkt->senderState = senderState->saved; 217 delete senderState; 218 delete pkt->req; 219 delete pkt; 220 221 DPRINTF(RubyTest, "failed to initiate action - sequencer not ready\n"); 222 } 223 224 DPRINTF(RubyTest, "status after action update: %s\n", 225 (TesterStatus_to_string(m_status)).c_str()); 226} 227 228void 229Check::initiateCheck() 230{ 231 DPRINTF(RubyTest, "Initiating Check\n"); 232 assert(m_status == TesterStatus_Ready); 233 234 int index = random() % m_num_cpu_sequencers; 235 RubyTester::CpuPort* port = 236 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getCpuPort(index)); 237 238 Request::Flags flags; 239 240 // 50% chance that the request will be an instruction fetch 241 if ((random() & 0x1) == 0) { 242 flags.set(Request::INST_FETCH); 243 } 244 245 // Checks are sized depending on the number of bytes written 246 Request *req = new Request(m_address.getAddress(), CHECK_SIZE, flags, 247 m_tester_ptr->masterId(), curTick(), m_pc.getAddress()); 248 249 req->setThreadContext(index, 0); 250 PacketPtr pkt = new Packet(req, MemCmd::ReadReq, port->idx); 251 uint8_t* dataArray = new uint8_t[CHECK_SIZE]; 252 pkt->dataDynamicArray(dataArray); 253 254 // push the subblock onto the sender state. The sequencer will 255 // update the subblock on the return 256 pkt->senderState = 257 new SenderState(m_address, req->getSize(), pkt->senderState); 258 259 if (port->sendTiming(pkt)) { 260 DPRINTF(RubyTest, "initiating check - successful\n"); 261 DPRINTF(RubyTest, "status before check update: %s\n", 262 TesterStatus_to_string(m_status).c_str()); 263 m_status = TesterStatus_Check_Pending; 264 } else { 265 // If the packet did not issue, must delete 266 // Note: No need to delete the data, the packet destructor 267 // will delete it 268 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 269 pkt->senderState = senderState->saved; 270 delete senderState; 271 delete pkt->req; 272 delete pkt; 273 274 DPRINTF(RubyTest, "failed to initiate check - cpu port not ready\n"); 275 } 276 277 DPRINTF(RubyTest, "status after check update: %s\n", 278 TesterStatus_to_string(m_status).c_str()); 279} 280 281void 282Check::performCallback(NodeID proc, SubBlock* data) 283{ 284 Address address = data->getAddress(); 285 286 // This isn't exactly right since we now have multi-byte checks 287 // assert(getAddress() == address); 288 289 assert(getAddress().getLineAddress() == address.getLineAddress()); 290 assert(data != NULL); 291 292 DPRINTF(RubyTest, "RubyTester Callback\n"); 293 debugPrint(); 294 295 if (m_status == TesterStatus_Action_Pending) { 296 DPRINTF(RubyTest, "Action callback write value: %d, currently %d\n", 297 (m_value + m_store_count), data->getByte(0)); 298 // Perform store one byte at a time 299 data->setByte(0, (m_value + m_store_count)); 300 m_store_count++; 301 if (m_store_count == CHECK_SIZE) { 302 m_status = TesterStatus_Ready; 303 } else { 304 m_status = TesterStatus_Idle; 305 } 306 DPRINTF(RubyTest, "Action callback return data now %d\n", 307 data->getByte(0)); 308 } else if (m_status == TesterStatus_Check_Pending) { 309 DPRINTF(RubyTest, "Check callback\n"); 310 // Perform load/check 311 for (int byte_number=0; byte_number<CHECK_SIZE; byte_number++) { 312 if (uint8(m_value + byte_number) != data->getByte(byte_number)) { 313 panic("Action/check failure: proc: %d address: %s data: %s " 314 "byte_number: %d m_value+byte_number: %d byte: %d %s" 315 "Time: %d\n", 316 proc, address, data, byte_number, 317 (int)m_value + byte_number, 318 (int)data->getByte(byte_number), *this, 319 g_eventQueue_ptr->getTime()); 320 } 321 } 322 DPRINTF(RubyTest, "Action/check success\n"); 323 debugPrint(); 324 325 // successful check complete, increment complete 326 m_tester_ptr->incrementCheckCompletions(); 327 328 m_status = TesterStatus_Idle; 329 pickValue(); 330 331 } else { 332 panic("Unexpected TesterStatus: %s proc: %d data: %s m_status: %s " 333 "time: %d\n", 334 *this, proc, data, m_status, g_eventQueue_ptr->getTime()); 335 } 336 337 DPRINTF(RubyTest, "proc: %d, Address: 0x%x\n", proc, 338 getAddress().getLineAddress()); 339 DPRINTF(RubyTest, "Callback done\n"); 340 debugPrint(); 341} 342 343void 344Check::changeAddress(const Address& address) 345{ 346 assert(m_status == TesterStatus_Idle || m_status == TesterStatus_Ready); 347 m_status = TesterStatus_Idle; 348 m_address = address; 349 m_store_count = 0; 350} 351 352void 353Check::pickValue() 354{ 355 assert(m_status == TesterStatus_Idle); 356 m_status = TesterStatus_Idle; 357 m_value = random() & 0xff; // One byte 358 m_store_count = 0; 359} 360 361void 362Check::pickInitiatingNode() 363{ 364 assert(m_status == TesterStatus_Idle || m_status == TesterStatus_Ready); 365 m_status = TesterStatus_Idle; 366 m_initiatingNode = (random() % m_num_cpu_sequencers); 367 DPRINTF(RubyTest, "picked initiating node %d\n", m_initiatingNode); 368 m_store_count = 0; 369} 370 371void 372Check::print(std::ostream& out) const 373{ 374 out << "[" 375 << m_address << ", value: " 376 << (int)m_value << ", status: " 377 << m_status << ", initiating node: " 378 << m_initiatingNode << ", store_count: " 379 << m_store_count 380 << "]" << std::flush; 381} 382 383void 384Check::debugPrint() 385{ 386 DPRINTF(RubyTest, 387 "[%#x, value: %d, status: %s, initiating node: %d, store_count: %d]\n", 388 m_address.getAddress(), (int)m_value, 389 TesterStatus_to_string(m_status).c_str(), 390 m_initiatingNode, m_store_count); 391} 392