Check.cc revision 8975
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 MasterPort* port = m_tester_ptr->getReadableCpuPort(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 // if necessary, make the request an instruction fetch 97 if (m_tester_ptr->isInstReadableCpuPort(index)) { 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); 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->sendTimingReq(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_writers; 139 MasterPort* port = m_tester_ptr->getWritableCpuPort(index); 140 141 Request::Flags flags; 142 143 Request *req = new Request(m_address.getAddress(), CHECK_SIZE, flags, 144 m_tester_ptr->masterId(), curTick(), m_pc.getAddress()); 145 146 Packet::Command cmd; 147 148 cmd = MemCmd::FlushReq; 149 150 PacketPtr pkt = new Packet(req, cmd); 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->sendTimingReq(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_writers; 169 MasterPort* port = m_tester_ptr->getWritableCpuPort(index); 170 171 Request::Flags flags; 172 173 // Create the particular address for the next byte to be written 174 Address writeAddr(m_address.getAddress() + m_store_count); 175 176 // Stores are assumed to be 1 byte-sized 177 Request *req = new Request(writeAddr.getAddress(), 1, flags, 178 m_tester_ptr->masterId(), 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); 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->sendTimingReq(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_readers; 233 MasterPort* port = m_tester_ptr->getReadableCpuPort(index); 234 235 Request::Flags flags; 236 237 // If necessary, make the request an instruction fetch 238 if (m_tester_ptr->isInstReadableCpuPort(index)) { 239 flags.set(Request::INST_FETCH); 240 } 241 242 // Checks are sized depending on the number of bytes written 243 Request *req = new Request(m_address.getAddress(), CHECK_SIZE, flags, 244 m_tester_ptr->masterId(), curTick(), m_pc.getAddress()); 245 246 req->setThreadContext(index, 0); 247 PacketPtr pkt = new Packet(req, MemCmd::ReadReq); 248 uint8_t* dataArray = new uint8_t[CHECK_SIZE]; 249 pkt->dataDynamicArray(dataArray); 250 251 // push the subblock onto the sender state. The sequencer will 252 // update the subblock on the return 253 pkt->senderState = 254 new SenderState(m_address, req->getSize(), pkt->senderState); 255 256 if (port->sendTimingReq(pkt)) { 257 DPRINTF(RubyTest, "initiating check - successful\n"); 258 DPRINTF(RubyTest, "status before check update: %s\n", 259 TesterStatus_to_string(m_status).c_str()); 260 m_status = TesterStatus_Check_Pending; 261 } else { 262 // If the packet did not issue, must delete 263 // Note: No need to delete the data, the packet destructor 264 // will delete it 265 SenderState* senderState = safe_cast<SenderState*>(pkt->senderState); 266 pkt->senderState = senderState->saved; 267 delete senderState; 268 delete pkt->req; 269 delete pkt; 270 271 DPRINTF(RubyTest, "failed to initiate check - cpu port not ready\n"); 272 } 273 274 DPRINTF(RubyTest, "status after check update: %s\n", 275 TesterStatus_to_string(m_status).c_str()); 276} 277 278void 279Check::performCallback(NodeID proc, SubBlock* data) 280{ 281 Address address = data->getAddress(); 282 283 // This isn't exactly right since we now have multi-byte checks 284 // assert(getAddress() == address); 285 286 assert(getAddress().getLineAddress() == address.getLineAddress()); 287 assert(data != NULL); 288 289 DPRINTF(RubyTest, "RubyTester Callback\n"); 290 debugPrint(); 291 292 if (m_status == TesterStatus_Action_Pending) { 293 DPRINTF(RubyTest, "Action callback write value: %d, currently %d\n", 294 (m_value + m_store_count), data->getByte(0)); 295 // Perform store one byte at a time 296 data->setByte(0, (m_value + m_store_count)); 297 m_store_count++; 298 if (m_store_count == CHECK_SIZE) { 299 m_status = TesterStatus_Ready; 300 } else { 301 m_status = TesterStatus_Idle; 302 } 303 DPRINTF(RubyTest, "Action callback return data now %d\n", 304 data->getByte(0)); 305 } else if (m_status == TesterStatus_Check_Pending) { 306 DPRINTF(RubyTest, "Check callback\n"); 307 // Perform load/check 308 for (int byte_number=0; byte_number<CHECK_SIZE; byte_number++) { 309 if (uint8(m_value + byte_number) != data->getByte(byte_number)) { 310 panic("Action/check failure: proc: %d address: %s data: %s " 311 "byte_number: %d m_value+byte_number: %d byte: %d %s" 312 "Time: %d\n", 313 proc, address, data, byte_number, 314 (int)m_value + byte_number, 315 (int)data->getByte(byte_number), *this, 316 g_eventQueue_ptr->getTime()); 317 } 318 } 319 DPRINTF(RubyTest, "Action/check success\n"); 320 debugPrint(); 321 322 // successful check complete, increment complete 323 m_tester_ptr->incrementCheckCompletions(); 324 325 m_status = TesterStatus_Idle; 326 pickValue(); 327 328 } else { 329 panic("Unexpected TesterStatus: %s proc: %d data: %s m_status: %s " 330 "time: %d\n", 331 *this, proc, data, m_status, g_eventQueue_ptr->getTime()); 332 } 333 334 DPRINTF(RubyTest, "proc: %d, Address: 0x%x\n", proc, 335 getAddress().getLineAddress()); 336 DPRINTF(RubyTest, "Callback done\n"); 337 debugPrint(); 338} 339 340void 341Check::changeAddress(const Address& address) 342{ 343 assert(m_status == TesterStatus_Idle || m_status == TesterStatus_Ready); 344 m_status = TesterStatus_Idle; 345 m_address = address; 346 m_store_count = 0; 347} 348 349void 350Check::pickValue() 351{ 352 assert(m_status == TesterStatus_Idle); 353 m_status = TesterStatus_Idle; 354 m_value = random() & 0xff; // One byte 355 m_store_count = 0; 356} 357 358void 359Check::pickInitiatingNode() 360{ 361 assert(m_status == TesterStatus_Idle || m_status == TesterStatus_Ready); 362 m_status = TesterStatus_Idle; 363 m_initiatingNode = (random() % m_num_writers); 364 DPRINTF(RubyTest, "picked initiating node %d\n", m_initiatingNode); 365 m_store_count = 0; 366} 367 368void 369Check::print(std::ostream& out) const 370{ 371 out << "[" 372 << m_address << ", value: " 373 << (int)m_value << ", status: " 374 << m_status << ", initiating node: " 375 << m_initiatingNode << ", store_count: " 376 << m_store_count 377 << "]" << std::flush; 378} 379 380void 381Check::debugPrint() 382{ 383 DPRINTF(RubyTest, 384 "[%#x, value: %d, status: %s, initiating node: %d, store_count: %d]\n", 385 m_address.getAddress(), (int)m_value, 386 TesterStatus_to_string(m_status).c_str(), 387 m_initiatingNode, m_store_count); 388} 389