Check.cc revision 8232
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, curTick(), 107 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, curTick(), 145 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, curTick(), 180 m_pc.getAddress()); 181 182 req->setThreadContext(index, 0); 183 Packet::Command cmd; 184 185 // 1 out of 8 chance, issue an atomic rather than a write 186 // if ((random() & 0x7) == 0) { 187 // cmd = MemCmd::SwapReq; 188 // } else { 189 cmd = MemCmd::WriteReq; 190 // } 191 192 PacketPtr pkt = new Packet(req, cmd, port->idx); 193 uint8_t* writeData = new uint8_t; 194 *writeData = m_value + m_store_count; 195 pkt->dataDynamic(writeData); 196 197 DPRINTF(RubyTest, "data 0x%x check 0x%x\n", 198 *(pkt->getPtr<uint8_t>()), *writeData); 199 200 // push the subblock onto the sender state. The sequencer will 201 // update the subblock on the return 202 pkt->senderState = 203 new SenderState(writeAddr, req->getSize(), pkt->senderState); 204 205 if (port->sendTiming(pkt)) { 206 DPRINTF(RubyTest, "initiating action - successful\n"); 207 DPRINTF(RubyTest, "status before action update: %s\n", 208 (TesterStatus_to_string(m_status)).c_str()); 209 m_status = TesterStatus_Action_Pending; 210 } else { 211 // If the packet did not issue, must delete 212 // Note: No need to delete the data, the packet destructor 213 // will delete it 214 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 215 pkt->senderState = senderState->saved; 216 delete senderState; 217 delete pkt->req; 218 delete pkt; 219 220 DPRINTF(RubyTest, "failed to initiate action - sequencer not ready\n"); 221 } 222 223 DPRINTF(RubyTest, "status after action update: %s\n", 224 (TesterStatus_to_string(m_status)).c_str()); 225} 226 227void 228Check::initiateCheck() 229{ 230 DPRINTF(RubyTest, "Initiating Check\n"); 231 assert(m_status == TesterStatus_Ready); 232 233 int index = random() % m_num_cpu_sequencers; 234 RubyTester::CpuPort* port = 235 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getCpuPort(index)); 236 237 Request::Flags flags; 238 239 // 50% chance that the request will be an instruction fetch 240 if ((random() & 0x1) == 0) { 241 flags.set(Request::INST_FETCH); 242 } 243 244 // Checks are sized depending on the number of bytes written 245 Request *req = new Request(m_address.getAddress(), CHECK_SIZE, flags, 246 curTick(), m_pc.getAddress()); 247 248 req->setThreadContext(index, 0); 249 PacketPtr pkt = new Packet(req, MemCmd::ReadReq, port->idx); 250 uint8_t* dataArray = new uint8_t[CHECK_SIZE]; 251 pkt->dataDynamicArray(dataArray); 252 253 // push the subblock onto the sender state. The sequencer will 254 // update the subblock on the return 255 pkt->senderState = 256 new SenderState(m_address, req->getSize(), pkt->senderState); 257 258 if (port->sendTiming(pkt)) { 259 DPRINTF(RubyTest, "initiating check - successful\n"); 260 DPRINTF(RubyTest, "status before check update: %s\n", 261 TesterStatus_to_string(m_status).c_str()); 262 m_status = TesterStatus_Check_Pending; 263 } else { 264 // If the packet did not issue, must delete 265 // Note: No need to delete the data, the packet destructor 266 // will delete it 267 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 268 pkt->senderState = senderState->saved; 269 delete senderState; 270 delete pkt->req; 271 delete pkt; 272 273 DPRINTF(RubyTest, "failed to initiate check - cpu port not ready\n"); 274 } 275 276 DPRINTF(RubyTest, "status after check update: %s\n", 277 TesterStatus_to_string(m_status).c_str()); 278} 279 280void 281Check::performCallback(NodeID proc, SubBlock* data) 282{ 283 Address address = data->getAddress(); 284 285 // This isn't exactly right since we now have multi-byte checks 286 // assert(getAddress() == address); 287 288 assert(getAddress().getLineAddress() == address.getLineAddress()); 289 assert(data != NULL); 290 291 DPRINTF(RubyTest, "RubyTester Callback\n"); 292 debugPrint(); 293 294 if (m_status == TesterStatus_Action_Pending) { 295 DPRINTF(RubyTest, "Action callback write value: %d, currently %d\n", 296 (m_value + m_store_count), data->getByte(0)); 297 // Perform store one byte at a time 298 data->setByte(0, (m_value + m_store_count)); 299 m_store_count++; 300 if (m_store_count == CHECK_SIZE) { 301 m_status = TesterStatus_Ready; 302 } else { 303 m_status = TesterStatus_Idle; 304 } 305 DPRINTF(RubyTest, "Action callback return data now %d\n", 306 data->getByte(0)); 307 } else if (m_status == TesterStatus_Check_Pending) { 308 DPRINTF(RubyTest, "Check callback\n"); 309 // Perform load/check 310 for (int byte_number=0; byte_number<CHECK_SIZE; byte_number++) { 311 if (uint8(m_value + byte_number) != data->getByte(byte_number)) { 312 panic("Action/check failure: proc: %d address: %s data: %s " 313 "byte_number: %d m_value+byte_number: %d byte: %d %s" 314 "Time: %d\n", 315 proc, address, data, byte_number, 316 (int)m_value + byte_number, 317 (int)data->getByte(byte_number), *this, 318 g_eventQueue_ptr->getTime()); 319 } 320 } 321 DPRINTF(RubyTest, "Action/check success\n"); 322 debugPrint(); 323 324 // successful check complete, increment complete 325 m_tester_ptr->incrementCheckCompletions(); 326 327 m_status = TesterStatus_Idle; 328 pickValue(); 329 330 } else { 331 panic("Unexpected TesterStatus: %s proc: %d data: %s m_status: %s " 332 "time: %d\n", 333 *this, proc, data, m_status, g_eventQueue_ptr->getTime()); 334 } 335 336 DPRINTF(RubyTest, "proc: %d, Address: 0x%x\n", proc, 337 getAddress().getLineAddress()); 338 DPRINTF(RubyTest, "Callback done\n"); 339 debugPrint(); 340} 341 342void 343Check::changeAddress(const Address& address) 344{ 345 assert(m_status == TesterStatus_Idle || m_status == TesterStatus_Ready); 346 m_status = TesterStatus_Idle; 347 m_address = address; 348 m_store_count = 0; 349} 350 351void 352Check::pickValue() 353{ 354 assert(m_status == TesterStatus_Idle); 355 m_status = TesterStatus_Idle; 356 m_value = random() & 0xff; // One byte 357 m_store_count = 0; 358} 359 360void 361Check::pickInitiatingNode() 362{ 363 assert(m_status == TesterStatus_Idle || m_status == TesterStatus_Ready); 364 m_status = TesterStatus_Idle; 365 m_initiatingNode = (random() % m_num_cpu_sequencers); 366 DPRINTF(RubyTest, "picked initiating node %d\n", m_initiatingNode); 367 m_store_count = 0; 368} 369 370void 371Check::print(std::ostream& out) const 372{ 373 out << "[" 374 << m_address << ", value: " 375 << (int)m_value << ", status: " 376 << m_status << ", initiating node: " 377 << m_initiatingNode << ", store_count: " 378 << m_store_count 379 << "]" << std::flush; 380} 381 382void 383Check::debugPrint() 384{ 385 DPRINTF(RubyTest, 386 "[%#x, value: %d, status: %s, initiating node: %d, store_count: %d]\n", 387 m_address.getAddress(), (int)m_value, 388 TesterStatus_to_string(m_status).c_str(), 389 m_initiatingNode, m_store_count); 390} 391