Check.cc revision 8190:8c68155aac00
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 "mem/ruby/common/SubBlock.hh" 32#include "mem/ruby/system/Sequencer.hh" 33#include "mem/ruby/system/System.hh" 34 35typedef RubyTester::SenderState SenderState; 36 37Check::Check(const Address& address, const Address& pc, 38 int _num_cpu_sequencers, RubyTester* _tester) 39 : m_num_cpu_sequencers(_num_cpu_sequencers), m_tester_ptr(_tester) 40{ 41 m_status = TesterStatus_Idle; 42 43 pickValue(); 44 pickInitiatingNode(); 45 changeAddress(address); 46 m_pc = pc; 47 m_access_mode = RubyAccessMode(random() % RubyAccessMode_NUM); 48 m_store_count = 0; 49} 50 51void 52Check::initiate() 53{ 54 DPRINTF(RubyTest, "initiating\n"); 55 debugPrint(); 56 57 // currently no protocols support prefetches 58 if (false && (random() & 0xf) == 0) { 59 initiatePrefetch(); // Prefetch from random processor 60 } 61 62 if (m_tester_ptr->getCheckFlush() && (random() & 0xff) == 0) { 63 initiateFlush(); // issue a Flush request from random processor 64 } 65 66 if (m_status == TesterStatus_Idle) { 67 initiateAction(); 68 } else if (m_status == TesterStatus_Ready) { 69 initiateCheck(); 70 } else { 71 // Pending - do nothing 72 DPRINTF(RubyTest, 73 "initiating action/check - failed: action/check is pending\n"); 74 } 75} 76 77void 78Check::initiatePrefetch() 79{ 80 DPRINTF(RubyTest, "initiating prefetch\n"); 81 82 int index = random() % m_num_cpu_sequencers; 83 RubyTester::CpuPort* port = 84 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getCpuPort(index)); 85 86 Request::Flags flags; 87 flags.set(Request::PREFETCH); 88 89 Packet::Command cmd; 90 91 // 1 in 8 chance this will be an exclusive prefetch 92 if ((random() & 0x7) != 0) { 93 cmd = MemCmd::ReadReq; 94 95 // 50% chance that the request will be an instruction fetch 96 if ((random() & 0x1) == 0) { 97 flags.set(Request::INST_FETCH); 98 } 99 } else { 100 cmd = MemCmd::WriteReq; 101 flags.set(Request::PF_EXCLUSIVE); 102 } 103 104 // Prefetches are assumed to be 0 sized 105 Request *req = new Request(m_address.getAddress(), 0, flags, curTick(), 106 m_pc.getAddress()); 107 req->setThreadContext(index, 0); 108 109 PacketPtr pkt = new Packet(req, cmd, port->idx); 110 111 // push the subblock onto the sender state. The sequencer will 112 // update the subblock on the return 113 pkt->senderState = 114 new SenderState(m_address, req->getSize(), pkt->senderState); 115 116 if (port->sendTiming(pkt)) { 117 DPRINTF(RubyTest, "successfully initiated prefetch.\n"); 118 } else { 119 // If the packet did not issue, must delete 120 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 121 pkt->senderState = senderState->saved; 122 delete senderState; 123 delete pkt->req; 124 delete pkt; 125 126 DPRINTF(RubyTest, 127 "prefetch initiation failed because Port was busy.\n"); 128 } 129} 130 131void 132Check::initiateFlush() 133{ 134 135 DPRINTF(RubyTest, "initiating Flush\n"); 136 137 int index = random() % m_num_cpu_sequencers; 138 RubyTester::CpuPort* port = 139 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getCpuPort(index)); 140 141 Request::Flags flags; 142 143 Request *req = new Request(m_address.getAddress(), CHECK_SIZE, flags, curTick(), 144 m_pc.getAddress()); 145 146 Packet::Command cmd; 147 148 cmd = MemCmd::FlushReq; 149 150 PacketPtr pkt = new Packet(req, cmd, port->idx); 151 152 // push the subblock onto the sender state. The sequencer will 153 // update the subblock on the return 154 pkt->senderState = 155 new SenderState(m_address, req->getSize(), pkt->senderState); 156 157 if (port->sendTiming(pkt)) { 158 DPRINTF(RubyTest, "initiating Flush - successful\n"); 159 } 160} 161 162void 163Check::initiateAction() 164{ 165 DPRINTF(RubyTest, "initiating Action\n"); 166 assert(m_status == TesterStatus_Idle); 167 168 int index = random() % m_num_cpu_sequencers; 169 RubyTester::CpuPort* port = 170 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getCpuPort(index)); 171 172 Request::Flags flags; 173 174 // Create the particular address for the next byte to be written 175 Address writeAddr(m_address.getAddress() + m_store_count); 176 177 // Stores are assumed to be 1 byte-sized 178 Request *req = new Request(writeAddr.getAddress(), 1, flags, curTick(), 179 m_pc.getAddress()); 180 181 req->setThreadContext(index, 0); 182 Packet::Command cmd; 183 184 // 1 out of 8 chance, issue an atomic rather than a write 185 // if ((random() & 0x7) == 0) { 186 // cmd = MemCmd::SwapReq; 187 // } else { 188 cmd = MemCmd::WriteReq; 189 // } 190 191 PacketPtr pkt = new Packet(req, cmd, port->idx); 192 uint8_t* writeData = new uint8_t; 193 *writeData = m_value + m_store_count; 194 pkt->dataDynamic(writeData); 195 196 DPRINTF(RubyTest, "data 0x%x check 0x%x\n", 197 *(pkt->getPtr<uint8_t>()), *writeData); 198 199 // push the subblock onto the sender state. The sequencer will 200 // update the subblock on the return 201 pkt->senderState = 202 new SenderState(writeAddr, req->getSize(), pkt->senderState); 203 204 if (port->sendTiming(pkt)) { 205 DPRINTF(RubyTest, "initiating action - successful\n"); 206 DPRINTF(RubyTest, "status before action update: %s\n", 207 (TesterStatus_to_string(m_status)).c_str()); 208 m_status = TesterStatus_Action_Pending; 209 } else { 210 // If the packet did not issue, must delete 211 // Note: No need to delete the data, the packet destructor 212 // will delete it 213 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 214 pkt->senderState = senderState->saved; 215 delete senderState; 216 delete pkt->req; 217 delete pkt; 218 219 DPRINTF(RubyTest, "failed to initiate action - sequencer not ready\n"); 220 } 221 222 DPRINTF(RubyTest, "status after action update: %s\n", 223 (TesterStatus_to_string(m_status)).c_str()); 224} 225 226void 227Check::initiateCheck() 228{ 229 DPRINTF(RubyTest, "Initiating Check\n"); 230 assert(m_status == TesterStatus_Ready); 231 232 int index = random() % m_num_cpu_sequencers; 233 RubyTester::CpuPort* port = 234 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getCpuPort(index)); 235 236 Request::Flags flags; 237 238 // 50% chance that the request will be an instruction fetch 239 if ((random() & 0x1) == 0) { 240 flags.set(Request::INST_FETCH); 241 } 242 243 // Checks are sized depending on the number of bytes written 244 Request *req = new Request(m_address.getAddress(), CHECK_SIZE, flags, 245 curTick(), m_pc.getAddress()); 246 247 req->setThreadContext(index, 0); 248 PacketPtr pkt = new Packet(req, MemCmd::ReadReq, port->idx); 249 uint8_t* dataArray = new uint8_t[CHECK_SIZE]; 250 pkt->dataDynamicArray(dataArray); 251 252 // push the subblock onto the sender state. The sequencer will 253 // update the subblock on the return 254 pkt->senderState = 255 new SenderState(m_address, req->getSize(), pkt->senderState); 256 257 if (port->sendTiming(pkt)) { 258 DPRINTF(RubyTest, "initiating check - successful\n"); 259 DPRINTF(RubyTest, "status before check update: %s\n", 260 TesterStatus_to_string(m_status).c_str()); 261 m_status = TesterStatus_Check_Pending; 262 } else { 263 // If the packet did not issue, must delete 264 // Note: No need to delete the data, the packet destructor 265 // will delete it 266 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 267 pkt->senderState = senderState->saved; 268 delete senderState; 269 delete pkt->req; 270 delete pkt; 271 272 DPRINTF(RubyTest, "failed to initiate check - cpu port not ready\n"); 273 } 274 275 DPRINTF(RubyTest, "status after check update: %s\n", 276 TesterStatus_to_string(m_status).c_str()); 277} 278 279void 280Check::performCallback(NodeID proc, SubBlock* data) 281{ 282 Address address = data->getAddress(); 283 284 // This isn't exactly right since we now have multi-byte checks 285 // assert(getAddress() == address); 286 287 assert(getAddress().getLineAddress() == address.getLineAddress()); 288 assert(data != NULL); 289 290 DPRINTF(RubyTest, "RubyTester Callback\n"); 291 debugPrint(); 292 293 if (m_status == TesterStatus_Action_Pending) { 294 DPRINTF(RubyTest, "Action callback write value: %d, currently %d\n", 295 (m_value + m_store_count), data->getByte(0)); 296 // Perform store one byte at a time 297 data->setByte(0, (m_value + m_store_count)); 298 m_store_count++; 299 if (m_store_count == CHECK_SIZE) { 300 m_status = TesterStatus_Ready; 301 } else { 302 m_status = TesterStatus_Idle; 303 } 304 DPRINTF(RubyTest, "Action callback return data now %d\n", 305 data->getByte(0)); 306 } else if (m_status == TesterStatus_Check_Pending) { 307 DPRINTF(RubyTest, "Check callback\n"); 308 // Perform load/check 309 for (int byte_number=0; byte_number<CHECK_SIZE; byte_number++) { 310 if (uint8(m_value + byte_number) != data->getByte(byte_number)) { 311 panic("Action/check failure: proc: %d address: %s data: %s " 312 "byte_number: %d m_value+byte_number: %d byte: %d %s" 313 "Time: %d\n", 314 proc, address, data, byte_number, 315 (int)m_value + byte_number, 316 (int)data->getByte(byte_number), *this, 317 g_eventQueue_ptr->getTime()); 318 } 319 } 320 DPRINTF(RubyTest, "Action/check success\n"); 321 debugPrint(); 322 323 // successful check complete, increment complete 324 m_tester_ptr->incrementCheckCompletions(); 325 326 m_status = TesterStatus_Idle; 327 pickValue(); 328 329 } else { 330 panic("Unexpected TesterStatus: %s proc: %d data: %s m_status: %s " 331 "time: %d\n", 332 *this, proc, data, m_status, g_eventQueue_ptr->getTime()); 333 } 334 335 DPRINTF(RubyTest, "proc: %d, Address: 0x%x\n", proc, 336 getAddress().getLineAddress()); 337 DPRINTF(RubyTest, "Callback done\n"); 338 debugPrint(); 339} 340 341void 342Check::changeAddress(const Address& address) 343{ 344 assert(m_status == TesterStatus_Idle || m_status == TesterStatus_Ready); 345 m_status = TesterStatus_Idle; 346 m_address = address; 347 m_store_count = 0; 348} 349 350void 351Check::pickValue() 352{ 353 assert(m_status == TesterStatus_Idle); 354 m_status = TesterStatus_Idle; 355 m_value = random() & 0xff; // One byte 356 m_store_count = 0; 357} 358 359void 360Check::pickInitiatingNode() 361{ 362 assert(m_status == TesterStatus_Idle || m_status == TesterStatus_Ready); 363 m_status = TesterStatus_Idle; 364 m_initiatingNode = (random() % m_num_cpu_sequencers); 365 DPRINTF(RubyTest, "picked initiating node %d\n", m_initiatingNode); 366 m_store_count = 0; 367} 368 369void 370Check::print(std::ostream& out) const 371{ 372 out << "[" 373 << m_address << ", value: " 374 << (int)m_value << ", status: " 375 << m_status << ", initiating node: " 376 << m_initiatingNode << ", store_count: " 377 << m_store_count 378 << "]" << std::flush; 379} 380 381void 382Check::debugPrint() 383{ 384 DPRINTF(RubyTest, 385 "[%#x, value: %d, status: %s, initiating node: %d, store_count: %d]\n", 386 m_address.getAddress(), (int)m_value, 387 TesterStatus_to_string(m_status).c_str(), 388 m_initiatingNode, m_store_count); 389} 390