Check.cc revision 8949
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_writers, int _num_readers, RubyTester* _tester) 40 : m_num_writers(_num_writers), m_num_readers(_num_readers), 41 m_tester_ptr(_tester) 42{ 43 m_status = TesterStatus_Idle; 44 45 pickValue(); 46 pickInitiatingNode(); 47 changeAddress(address); 48 m_pc = pc; 49 m_access_mode = RubyAccessMode(random() % RubyAccessMode_NUM); 50 m_store_count = 0; 51} 52 53void 54Check::initiate() 55{ 56 DPRINTF(RubyTest, "initiating\n"); 57 debugPrint(); 58 59 // currently no protocols support prefetches 60 if (false && (random() & 0xf) == 0) { 61 initiatePrefetch(); // Prefetch from random processor 62 } 63 64 if (m_tester_ptr->getCheckFlush() && (random() & 0xff) == 0) { 65 initiateFlush(); // issue a Flush request from random processor 66 } 67 68 if (m_status == TesterStatus_Idle) { 69 initiateAction(); 70 } else if (m_status == TesterStatus_Ready) { 71 initiateCheck(); 72 } else { 73 // Pending - do nothing 74 DPRINTF(RubyTest, 75 "initiating action/check - failed: action/check is pending\n"); 76 } 77} 78 79void 80Check::initiatePrefetch() 81{ 82 DPRINTF(RubyTest, "initiating prefetch\n"); 83 84 int index = random() % m_num_readers; 85 RubyTester::CpuPort* port = 86 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getReadableCpuPort(index)); 87 88 Request::Flags flags; 89 flags.set(Request::PREFETCH); 90 91 Packet::Command cmd; 92 93 // 1 in 8 chance this will be an exclusive prefetch 94 if ((random() & 0x7) != 0) { 95 cmd = MemCmd::ReadReq; 96 97 // if necessary, make the request an instruction fetch 98 if (port->type == RubyTester::CpuPort::InstOnly) { 99 flags.set(Request::INST_FETCH); 100 } 101 } else { 102 cmd = MemCmd::WriteReq; 103 flags.set(Request::PF_EXCLUSIVE); 104 } 105 106 // Prefetches are assumed to be 0 sized 107 Request *req = new Request(m_address.getAddress(), 0, flags, 108 m_tester_ptr->masterId(), curTick(), m_pc.getAddress()); 109 req->setThreadContext(index, 0); 110 111 PacketPtr pkt = new Packet(req, cmd); 112 113 // push the subblock onto the sender state. The sequencer will 114 // update the subblock on the return 115 pkt->senderState = 116 new SenderState(m_address, req->getSize(), pkt->senderState); 117 118 if (port->sendTiming(pkt)) { 119 DPRINTF(RubyTest, "successfully initiated prefetch.\n"); 120 } else { 121 // If the packet did not issue, must delete 122 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 123 pkt->senderState = senderState->saved; 124 delete senderState; 125 delete pkt->req; 126 delete pkt; 127 128 DPRINTF(RubyTest, 129 "prefetch initiation failed because Port was busy.\n"); 130 } 131} 132 133void 134Check::initiateFlush() 135{ 136 137 DPRINTF(RubyTest, "initiating Flush\n"); 138 139 int index = random() % m_num_writers; 140 RubyTester::CpuPort* port = 141 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getWritableCpuPort(index)); 142 143 Request::Flags flags; 144 145 Request *req = new Request(m_address.getAddress(), CHECK_SIZE, flags, 146 m_tester_ptr->masterId(), curTick(), m_pc.getAddress()); 147 148 Packet::Command cmd; 149 150 cmd = MemCmd::FlushReq; 151 152 PacketPtr pkt = new Packet(req, cmd); 153 154 // push the subblock onto the sender state. The sequencer will 155 // update the subblock on the return 156 pkt->senderState = 157 new SenderState(m_address, req->getSize(), pkt->senderState); 158 159 if (port->sendTiming(pkt)) { 160 DPRINTF(RubyTest, "initiating Flush - successful\n"); 161 } 162} 163 164void 165Check::initiateAction() 166{ 167 DPRINTF(RubyTest, "initiating Action\n"); 168 assert(m_status == TesterStatus_Idle); 169 170 int index = random() % m_num_writers; 171 RubyTester::CpuPort* port = 172 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getWritableCpuPort(index)); 173 174 Request::Flags flags; 175 176 // Create the particular address for the next byte to be written 177 Address writeAddr(m_address.getAddress() + m_store_count); 178 179 // Stores are assumed to be 1 byte-sized 180 Request *req = new Request(writeAddr.getAddress(), 1, flags, 181 m_tester_ptr->masterId(), curTick(), 182 m_pc.getAddress()); 183 184 req->setThreadContext(index, 0); 185 Packet::Command cmd; 186 187 // 1 out of 8 chance, issue an atomic rather than a write 188 // if ((random() & 0x7) == 0) { 189 // cmd = MemCmd::SwapReq; 190 // } else { 191 cmd = MemCmd::WriteReq; 192 // } 193 194 PacketPtr pkt = new Packet(req, cmd); 195 uint8_t* writeData = new uint8_t; 196 *writeData = m_value + m_store_count; 197 pkt->dataDynamic(writeData); 198 199 DPRINTF(RubyTest, "data 0x%x check 0x%x\n", 200 *(pkt->getPtr<uint8_t>()), *writeData); 201 202 // push the subblock onto the sender state. The sequencer will 203 // update the subblock on the return 204 pkt->senderState = 205 new SenderState(writeAddr, req->getSize(), pkt->senderState); 206 207 if (port->sendTiming(pkt)) { 208 DPRINTF(RubyTest, "initiating action - successful\n"); 209 DPRINTF(RubyTest, "status before action update: %s\n", 210 (TesterStatus_to_string(m_status)).c_str()); 211 m_status = TesterStatus_Action_Pending; 212 } else { 213 // If the packet did not issue, must delete 214 // Note: No need to delete the data, the packet destructor 215 // will delete it 216 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 217 pkt->senderState = senderState->saved; 218 delete senderState; 219 delete pkt->req; 220 delete pkt; 221 222 DPRINTF(RubyTest, "failed to initiate action - sequencer not ready\n"); 223 } 224 225 DPRINTF(RubyTest, "status after action update: %s\n", 226 (TesterStatus_to_string(m_status)).c_str()); 227} 228 229void 230Check::initiateCheck() 231{ 232 DPRINTF(RubyTest, "Initiating Check\n"); 233 assert(m_status == TesterStatus_Ready); 234 235 int index = random() % m_num_readers; 236 RubyTester::CpuPort* port = 237 safe_cast<RubyTester::CpuPort*>(m_tester_ptr->getReadableCpuPort(index)); 238 239 Request::Flags flags; 240 241 // If necessary, make the request an instruction fetch 242 if (port->type == RubyTester::CpuPort::InstOnly) { 243 flags.set(Request::INST_FETCH); 244 } 245 246 // Checks are sized depending on the number of bytes written 247 Request *req = new Request(m_address.getAddress(), CHECK_SIZE, flags, 248 m_tester_ptr->masterId(), curTick(), m_pc.getAddress()); 249 250 req->setThreadContext(index, 0); 251 PacketPtr pkt = new Packet(req, MemCmd::ReadReq); 252 uint8_t* dataArray = new uint8_t[CHECK_SIZE]; 253 pkt->dataDynamicArray(dataArray); 254 255 // push the subblock onto the sender state. The sequencer will 256 // update the subblock on the return 257 pkt->senderState = 258 new SenderState(m_address, req->getSize(), pkt->senderState); 259 260 if (port->sendTiming(pkt)) { 261 DPRINTF(RubyTest, "initiating check - successful\n"); 262 DPRINTF(RubyTest, "status before check update: %s\n", 263 TesterStatus_to_string(m_status).c_str()); 264 m_status = TesterStatus_Check_Pending; 265 } else { 266 // If the packet did not issue, must delete 267 // Note: No need to delete the data, the packet destructor 268 // will delete it 269 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 270 pkt->senderState = senderState->saved; 271 delete senderState; 272 delete pkt->req; 273 delete pkt; 274 275 DPRINTF(RubyTest, "failed to initiate check - cpu port not ready\n"); 276 } 277 278 DPRINTF(RubyTest, "status after check update: %s\n", 279 TesterStatus_to_string(m_status).c_str()); 280} 281 282void 283Check::performCallback(NodeID proc, SubBlock* data) 284{ 285 Address address = data->getAddress(); 286 287 // This isn't exactly right since we now have multi-byte checks 288 // assert(getAddress() == address); 289 290 assert(getAddress().getLineAddress() == address.getLineAddress()); 291 assert(data != NULL); 292 293 DPRINTF(RubyTest, "RubyTester Callback\n"); 294 debugPrint(); 295 296 if (m_status == TesterStatus_Action_Pending) { 297 DPRINTF(RubyTest, "Action callback write value: %d, currently %d\n", 298 (m_value + m_store_count), data->getByte(0)); 299 // Perform store one byte at a time 300 data->setByte(0, (m_value + m_store_count)); 301 m_store_count++; 302 if (m_store_count == CHECK_SIZE) { 303 m_status = TesterStatus_Ready; 304 } else { 305 m_status = TesterStatus_Idle; 306 } 307 DPRINTF(RubyTest, "Action callback return data now %d\n", 308 data->getByte(0)); 309 } else if (m_status == TesterStatus_Check_Pending) { 310 DPRINTF(RubyTest, "Check callback\n"); 311 // Perform load/check 312 for (int byte_number=0; byte_number<CHECK_SIZE; byte_number++) { 313 if (uint8(m_value + byte_number) != data->getByte(byte_number)) { 314 panic("Action/check failure: proc: %d address: %s data: %s " 315 "byte_number: %d m_value+byte_number: %d byte: %d %s" 316 "Time: %d\n", 317 proc, address, data, byte_number, 318 (int)m_value + byte_number, 319 (int)data->getByte(byte_number), *this, 320 g_eventQueue_ptr->getTime()); 321 } 322 } 323 DPRINTF(RubyTest, "Action/check success\n"); 324 debugPrint(); 325 326 // successful check complete, increment complete 327 m_tester_ptr->incrementCheckCompletions(); 328 329 m_status = TesterStatus_Idle; 330 pickValue(); 331 332 } else { 333 panic("Unexpected TesterStatus: %s proc: %d data: %s m_status: %s " 334 "time: %d\n", 335 *this, proc, data, m_status, g_eventQueue_ptr->getTime()); 336 } 337 338 DPRINTF(RubyTest, "proc: %d, Address: 0x%x\n", proc, 339 getAddress().getLineAddress()); 340 DPRINTF(RubyTest, "Callback done\n"); 341 debugPrint(); 342} 343 344void 345Check::changeAddress(const Address& address) 346{ 347 assert(m_status == TesterStatus_Idle || m_status == TesterStatus_Ready); 348 m_status = TesterStatus_Idle; 349 m_address = address; 350 m_store_count = 0; 351} 352 353void 354Check::pickValue() 355{ 356 assert(m_status == TesterStatus_Idle); 357 m_status = TesterStatus_Idle; 358 m_value = random() & 0xff; // One byte 359 m_store_count = 0; 360} 361 362void 363Check::pickInitiatingNode() 364{ 365 assert(m_status == TesterStatus_Idle || m_status == TesterStatus_Ready); 366 m_status = TesterStatus_Idle; 367 m_initiatingNode = (random() % m_num_writers); 368 DPRINTF(RubyTest, "picked initiating node %d\n", m_initiatingNode); 369 m_store_count = 0; 370} 371 372void 373Check::print(std::ostream& out) const 374{ 375 out << "[" 376 << m_address << ", value: " 377 << (int)m_value << ", status: " 378 << m_status << ", initiating node: " 379 << m_initiatingNode << ", store_count: " 380 << m_store_count 381 << "]" << std::flush; 382} 383 384void 385Check::debugPrint() 386{ 387 DPRINTF(RubyTest, 388 "[%#x, value: %d, status: %s, initiating node: %d, store_count: %d]\n", 389 m_address.getAddress(), (int)m_value, 390 TesterStatus_to_string(m_status).c_str(), 391 m_initiatingNode, m_store_count); 392} 393