i8254xGBe.cc revision 4870
1/* 2 * Copyright (c) 2006 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Ali Saidi 29 */ 30 31/* @file 32 * Device model for Intel's 8254x line of gigabit ethernet controllers. 33 * In particular an 82547 revision 2 (82547GI) MAC because it seems to have the 34 * fewest workarounds in the driver. It will probably work with most of the 35 * other MACs with slight modifications. 36 */ 37 38 39/* 40 * @todo really there are multiple dma engines.. we should implement them. 41 */ 42 43#include "base/inet.hh" 44#include "base/trace.hh" 45#include "dev/i8254xGBe.hh" 46#include "mem/packet.hh" 47#include "mem/packet_access.hh" 48#include "sim/builder.hh" 49#include "sim/stats.hh" 50#include "sim/system.hh" 51 52#include <algorithm> 53 54using namespace iGbReg; 55using namespace Net; 56 57IGbE::IGbE(Params *p) 58 : PciDev(p), etherInt(NULL), drainEvent(NULL), useFlowControl(p->use_flow_control), 59 rxFifo(p->rx_fifo_size), txFifo(p->tx_fifo_size), rxTick(false), 60 txTick(false), txFifoTick(false), rdtrEvent(this), radvEvent(this), 61 tadvEvent(this), tidvEvent(this), tickEvent(this), interEvent(this), 62 rxDescCache(this, name()+".RxDesc", p->rx_desc_cache_size), 63 txDescCache(this, name()+".TxDesc", p->tx_desc_cache_size), clock(p->clock) 64{ 65 // Initialized internal registers per Intel documentation 66 // All registers intialized to 0 by per register constructor 67 regs.ctrl.fd(1); 68 regs.ctrl.lrst(1); 69 regs.ctrl.speed(2); 70 regs.ctrl.frcspd(1); 71 regs.sts.speed(3); // Say we're 1000Mbps 72 regs.sts.fd(1); // full duplex 73 regs.sts.lu(1); // link up 74 regs.eecd.fwe(1); 75 regs.eecd.ee_type(1); 76 regs.imr = 0; 77 regs.iam = 0; 78 regs.rxdctl.gran(1); 79 regs.rxdctl.wthresh(1); 80 regs.fcrth(1); 81 82 regs.pba.rxa(0x30); 83 regs.pba.txa(0x10); 84 85 eeOpBits = 0; 86 eeAddrBits = 0; 87 eeDataBits = 0; 88 eeOpcode = 0; 89 90 // clear all 64 16 bit words of the eeprom 91 memset(&flash, 0, EEPROM_SIZE*2); 92 93 // Set the MAC address 94 memcpy(flash, p->hardware_address.bytes(), ETH_ADDR_LEN); 95 for (int x = 0; x < ETH_ADDR_LEN/2; x++) 96 flash[x] = htobe(flash[x]); 97 98 uint16_t csum = 0; 99 for (int x = 0; x < EEPROM_SIZE; x++) 100 csum += htobe(flash[x]); 101 102 103 // Magic happy checksum value 104 flash[EEPROM_SIZE-1] = htobe((uint16_t)(EEPROM_CSUM - csum)); 105 106 rxFifo.clear(); 107 txFifo.clear(); 108} 109 110 111Tick 112IGbE::writeConfig(PacketPtr pkt) 113{ 114 int offset = pkt->getAddr() & PCI_CONFIG_SIZE; 115 if (offset < PCI_DEVICE_SPECIFIC) 116 PciDev::writeConfig(pkt); 117 else 118 panic("Device specific PCI config space not implemented.\n"); 119 120 /// 121 /// Some work may need to be done here based for the pci COMMAND bits. 122 /// 123 124 return pioDelay; 125} 126 127Tick 128IGbE::read(PacketPtr pkt) 129{ 130 int bar; 131 Addr daddr; 132 133 if (!getBAR(pkt->getAddr(), bar, daddr)) 134 panic("Invalid PCI memory access to unmapped memory.\n"); 135 136 // Only Memory register BAR is allowed 137 assert(bar == 0); 138 139 // Only 32bit accesses allowed 140 assert(pkt->getSize() == 4); 141 142 DPRINTF(Ethernet, "Read device register %#X\n", daddr); 143 144 pkt->allocate(); 145 146 /// 147 /// Handle read of register here 148 /// 149 150 151 switch (daddr) { 152 case REG_CTRL: 153 pkt->set<uint32_t>(regs.ctrl()); 154 break; 155 case REG_STATUS: 156 pkt->set<uint32_t>(regs.sts()); 157 break; 158 case REG_EECD: 159 pkt->set<uint32_t>(regs.eecd()); 160 break; 161 case REG_EERD: 162 pkt->set<uint32_t>(regs.eerd()); 163 break; 164 case REG_CTRL_EXT: 165 pkt->set<uint32_t>(regs.ctrl_ext()); 166 break; 167 case REG_MDIC: 168 pkt->set<uint32_t>(regs.mdic()); 169 break; 170 case REG_ICR: 171 DPRINTF(Ethernet, "Reading ICR. ICR=%#x IMR=%#x IAM=%#x IAME=%d\n", regs.icr(), 172 regs.imr, regs.iam, regs.ctrl_ext.iame()); 173 pkt->set<uint32_t>(regs.icr()); 174 if (regs.icr.int_assert() || regs.imr == 0) { 175 regs.icr = regs.icr() & ~mask(30); 176 DPRINTF(Ethernet, "Cleared ICR. ICR=%#x\n", regs.icr()); 177 } 178 if (regs.ctrl_ext.iame() && regs.icr.int_assert()) 179 regs.imr &= ~regs.iam; 180 chkInterrupt(); 181 break; 182 case REG_ITR: 183 pkt->set<uint32_t>(regs.itr()); 184 break; 185 case REG_RCTL: 186 pkt->set<uint32_t>(regs.rctl()); 187 break; 188 case REG_FCTTV: 189 pkt->set<uint32_t>(regs.fcttv()); 190 break; 191 case REG_TCTL: 192 pkt->set<uint32_t>(regs.tctl()); 193 break; 194 case REG_PBA: 195 pkt->set<uint32_t>(regs.pba()); 196 break; 197 case REG_WUC: 198 case REG_LEDCTL: 199 pkt->set<uint32_t>(0); // We don't care, so just return 0 200 break; 201 case REG_FCRTL: 202 pkt->set<uint32_t>(regs.fcrtl()); 203 break; 204 case REG_FCRTH: 205 pkt->set<uint32_t>(regs.fcrth()); 206 break; 207 case REG_RDBAL: 208 pkt->set<uint32_t>(regs.rdba.rdbal()); 209 break; 210 case REG_RDBAH: 211 pkt->set<uint32_t>(regs.rdba.rdbah()); 212 break; 213 case REG_RDLEN: 214 pkt->set<uint32_t>(regs.rdlen()); 215 break; 216 case REG_RDH: 217 pkt->set<uint32_t>(regs.rdh()); 218 break; 219 case REG_RDT: 220 pkt->set<uint32_t>(regs.rdt()); 221 break; 222 case REG_RDTR: 223 pkt->set<uint32_t>(regs.rdtr()); 224 if (regs.rdtr.fpd()) { 225 rxDescCache.writeback(0); 226 DPRINTF(EthernetIntr, "Posting interrupt because of RDTR.FPD write\n"); 227 postInterrupt(IT_RXT); 228 regs.rdtr.fpd(0); 229 } 230 break; 231 case REG_RADV: 232 pkt->set<uint32_t>(regs.radv()); 233 break; 234 case REG_TDBAL: 235 pkt->set<uint32_t>(regs.tdba.tdbal()); 236 break; 237 case REG_TDBAH: 238 pkt->set<uint32_t>(regs.tdba.tdbah()); 239 break; 240 case REG_TDLEN: 241 pkt->set<uint32_t>(regs.tdlen()); 242 break; 243 case REG_TDH: 244 pkt->set<uint32_t>(regs.tdh()); 245 break; 246 case REG_TDT: 247 pkt->set<uint32_t>(regs.tdt()); 248 break; 249 case REG_TIDV: 250 pkt->set<uint32_t>(regs.tidv()); 251 break; 252 case REG_TXDCTL: 253 pkt->set<uint32_t>(regs.txdctl()); 254 break; 255 case REG_TADV: 256 pkt->set<uint32_t>(regs.tadv()); 257 break; 258 case REG_RXCSUM: 259 pkt->set<uint32_t>(regs.rxcsum()); 260 break; 261 case REG_MANC: 262 pkt->set<uint32_t>(regs.manc()); 263 break; 264 default: 265 if (!(daddr >= REG_VFTA && daddr < (REG_VFTA + VLAN_FILTER_TABLE_SIZE*4)) && 266 !(daddr >= REG_RAL && daddr < (REG_RAL + RCV_ADDRESS_TABLE_SIZE*8)) && 267 !(daddr >= REG_MTA && daddr < (REG_MTA + MULTICAST_TABLE_SIZE*4)) && 268 !(daddr >= REG_CRCERRS && daddr < (REG_CRCERRS + STATS_REGS_SIZE))) 269 panic("Read request to unknown register number: %#x\n", daddr); 270 else 271 pkt->set<uint32_t>(0); 272 }; 273 274 pkt->makeAtomicResponse(); 275 return pioDelay; 276} 277 278Tick 279IGbE::write(PacketPtr pkt) 280{ 281 int bar; 282 Addr daddr; 283 284 285 if (!getBAR(pkt->getAddr(), bar, daddr)) 286 panic("Invalid PCI memory access to unmapped memory.\n"); 287 288 // Only Memory register BAR is allowed 289 assert(bar == 0); 290 291 // Only 32bit accesses allowed 292 assert(pkt->getSize() == sizeof(uint32_t)); 293 294 DPRINTF(Ethernet, "Wrote device register %#X value %#X\n", daddr, pkt->get<uint32_t>()); 295 296 /// 297 /// Handle write of register here 298 /// 299 uint32_t val = pkt->get<uint32_t>(); 300 301 Regs::RCTL oldrctl; 302 Regs::TCTL oldtctl; 303 304 switch (daddr) { 305 case REG_CTRL: 306 regs.ctrl = val; 307 if (regs.ctrl.tfce()) 308 warn("TX Flow control enabled, should implement\n"); 309 if (regs.ctrl.rfce()) 310 warn("RX Flow control enabled, should implement\n"); 311 break; 312 case REG_CTRL_EXT: 313 regs.ctrl_ext = val; 314 break; 315 case REG_STATUS: 316 regs.sts = val; 317 break; 318 case REG_EECD: 319 int oldClk; 320 oldClk = regs.eecd.sk(); 321 regs.eecd = val; 322 // See if this is a eeprom access and emulate accordingly 323 if (!oldClk && regs.eecd.sk()) { 324 if (eeOpBits < 8) { 325 eeOpcode = eeOpcode << 1 | regs.eecd.din(); 326 eeOpBits++; 327 } else if (eeAddrBits < 8 && eeOpcode == EEPROM_READ_OPCODE_SPI) { 328 eeAddr = eeAddr << 1 | regs.eecd.din(); 329 eeAddrBits++; 330 } else if (eeDataBits < 16 && eeOpcode == EEPROM_READ_OPCODE_SPI) { 331 assert(eeAddr>>1 < EEPROM_SIZE); 332 DPRINTF(EthernetEEPROM, "EEPROM bit read: %d word: %#X\n", 333 flash[eeAddr>>1] >> eeDataBits & 0x1, flash[eeAddr>>1]); 334 regs.eecd.dout((flash[eeAddr>>1] >> (15-eeDataBits)) & 0x1); 335 eeDataBits++; 336 } else if (eeDataBits < 8 && eeOpcode == EEPROM_RDSR_OPCODE_SPI) { 337 regs.eecd.dout(0); 338 eeDataBits++; 339 } else 340 panic("What's going on with eeprom interface? opcode:" 341 " %#x:%d addr: %#x:%d, data: %d\n", (uint32_t)eeOpcode, 342 (uint32_t)eeOpBits, (uint32_t)eeAddr, 343 (uint32_t)eeAddrBits, (uint32_t)eeDataBits); 344 345 // Reset everything for the next command 346 if ((eeDataBits == 16 && eeOpcode == EEPROM_READ_OPCODE_SPI) || 347 (eeDataBits == 8 && eeOpcode == EEPROM_RDSR_OPCODE_SPI)) { 348 eeOpBits = 0; 349 eeAddrBits = 0; 350 eeDataBits = 0; 351 eeOpcode = 0; 352 eeAddr = 0; 353 } 354 355 DPRINTF(EthernetEEPROM, "EEPROM: opcode: %#X:%d addr: %#X:%d\n", 356 (uint32_t)eeOpcode, (uint32_t) eeOpBits, 357 (uint32_t)eeAddr>>1, (uint32_t)eeAddrBits); 358 if (eeOpBits == 8 && !(eeOpcode == EEPROM_READ_OPCODE_SPI || 359 eeOpcode == EEPROM_RDSR_OPCODE_SPI )) 360 panic("Unknown eeprom opcode: %#X:%d\n", (uint32_t)eeOpcode, 361 (uint32_t)eeOpBits); 362 363 364 } 365 // If driver requests eeprom access, immediately give it to it 366 regs.eecd.ee_gnt(regs.eecd.ee_req()); 367 break; 368 case REG_EERD: 369 regs.eerd = val; 370 break; 371 case REG_MDIC: 372 regs.mdic = val; 373 if (regs.mdic.i()) 374 panic("No support for interrupt on mdic complete\n"); 375 if (regs.mdic.phyadd() != 1) 376 panic("No support for reading anything but phy\n"); 377 DPRINTF(Ethernet, "%s phy address %x\n", regs.mdic.op() == 1 ? "Writing" 378 : "Reading", regs.mdic.regadd()); 379 switch (regs.mdic.regadd()) { 380 case PHY_PSTATUS: 381 regs.mdic.data(0x796D); // link up 382 break; 383 case PHY_PID: 384 regs.mdic.data(0x02A8); 385 break; 386 case PHY_EPID: 387 regs.mdic.data(0x0380); 388 break; 389 case PHY_GSTATUS: 390 regs.mdic.data(0x7C00); 391 break; 392 case PHY_EPSTATUS: 393 regs.mdic.data(0x3000); 394 break; 395 case PHY_AGC: 396 regs.mdic.data(0x180); // some random length 397 break; 398 default: 399 regs.mdic.data(0); 400 } 401 regs.mdic.r(1); 402 break; 403 case REG_ICR: 404 DPRINTF(Ethernet, "Writing ICR. ICR=%#x IMR=%#x IAM=%#x IAME=%d\n", regs.icr(), 405 regs.imr, regs.iam, regs.ctrl_ext.iame()); 406 if (regs.ctrl_ext.iame()) 407 regs.imr &= ~regs.iam; 408 regs.icr = ~bits(val,30,0) & regs.icr(); 409 chkInterrupt(); 410 break; 411 case REG_ITR: 412 regs.itr = val; 413 break; 414 case REG_ICS: 415 DPRINTF(EthernetIntr, "Posting interrupt because of ICS write\n"); 416 postInterrupt((IntTypes)val); 417 break; 418 case REG_IMS: 419 regs.imr |= val; 420 chkInterrupt(); 421 break; 422 case REG_IMC: 423 regs.imr &= ~val; 424 chkInterrupt(); 425 break; 426 case REG_IAM: 427 regs.iam = val; 428 break; 429 case REG_RCTL: 430 oldrctl = regs.rctl; 431 regs.rctl = val; 432 if (regs.rctl.rst()) { 433 rxDescCache.reset(); 434 DPRINTF(EthernetSM, "RXS: Got RESET!\n"); 435 rxFifo.clear(); 436 regs.rctl.rst(0); 437 } 438 if (regs.rctl.en()) 439 rxTick = true; 440 restartClock(); 441 break; 442 case REG_FCTTV: 443 regs.fcttv = val; 444 break; 445 case REG_TCTL: 446 regs.tctl = val; 447 oldtctl = regs.tctl; 448 regs.tctl = val; 449 if (regs.tctl.en()) 450 txTick = true; 451 restartClock(); 452 if (regs.tctl.en() && !oldtctl.en()) { 453 txDescCache.reset(); 454 } 455 break; 456 case REG_PBA: 457 regs.pba.rxa(val); 458 regs.pba.txa(64 - regs.pba.rxa()); 459 break; 460 case REG_WUC: 461 case REG_LEDCTL: 462 case REG_FCAL: 463 case REG_FCAH: 464 case REG_FCT: 465 case REG_VET: 466 case REG_AIFS: 467 case REG_TIPG: 468 ; // We don't care, so don't store anything 469 break; 470 case REG_FCRTL: 471 regs.fcrtl = val; 472 break; 473 case REG_FCRTH: 474 regs.fcrth = val; 475 break; 476 case REG_RDBAL: 477 regs.rdba.rdbal( val & ~mask(4)); 478 rxDescCache.areaChanged(); 479 break; 480 case REG_RDBAH: 481 regs.rdba.rdbah(val); 482 rxDescCache.areaChanged(); 483 break; 484 case REG_RDLEN: 485 regs.rdlen = val & ~mask(7); 486 rxDescCache.areaChanged(); 487 break; 488 case REG_RDH: 489 regs.rdh = val; 490 rxDescCache.areaChanged(); 491 break; 492 case REG_RDT: 493 regs.rdt = val; 494 rxTick = true; 495 restartClock(); 496 break; 497 case REG_RDTR: 498 regs.rdtr = val; 499 break; 500 case REG_RADV: 501 regs.radv = val; 502 break; 503 case REG_TDBAL: 504 regs.tdba.tdbal( val & ~mask(4)); 505 txDescCache.areaChanged(); 506 break; 507 case REG_TDBAH: 508 regs.tdba.tdbah(val); 509 txDescCache.areaChanged(); 510 break; 511 case REG_TDLEN: 512 regs.tdlen = val & ~mask(7); 513 txDescCache.areaChanged(); 514 break; 515 case REG_TDH: 516 regs.tdh = val; 517 txDescCache.areaChanged(); 518 break; 519 case REG_TDT: 520 regs.tdt = val; 521 txTick = true; 522 restartClock(); 523 break; 524 case REG_TIDV: 525 regs.tidv = val; 526 break; 527 case REG_TXDCTL: 528 regs.txdctl = val; 529 break; 530 case REG_TADV: 531 regs.tadv = val; 532 break; 533 case REG_RXCSUM: 534 regs.rxcsum = val; 535 break; 536 case REG_MANC: 537 regs.manc = val; 538 break; 539 default: 540 if (!(daddr >= REG_VFTA && daddr < (REG_VFTA + VLAN_FILTER_TABLE_SIZE*4)) && 541 !(daddr >= REG_RAL && daddr < (REG_RAL + RCV_ADDRESS_TABLE_SIZE*8)) && 542 !(daddr >= REG_MTA && daddr < (REG_MTA + MULTICAST_TABLE_SIZE*4))) 543 panic("Write request to unknown register number: %#x\n", daddr); 544 }; 545 546 pkt->makeAtomicResponse(); 547 return pioDelay; 548} 549 550void 551IGbE::postInterrupt(IntTypes t, bool now) 552{ 553 assert(t); 554 555 // Interrupt is already pending 556 if (t & regs.icr()) 557 return; 558 559 if (regs.icr() & regs.imr) 560 { 561 regs.icr = regs.icr() | t; 562 if (!interEvent.scheduled()) 563 interEvent.schedule(curTick + Clock::Int::ns * 256 * 564 regs.itr.interval()); 565 } else { 566 regs.icr = regs.icr() | t; 567 if (regs.itr.interval() == 0 || now) { 568 if (interEvent.scheduled()) 569 interEvent.deschedule(); 570 cpuPostInt(); 571 } else { 572 DPRINTF(EthernetIntr, "EINT: Scheduling timer interrupt for %d ticks\n", 573 Clock::Int::ns * 256 * regs.itr.interval()); 574 if (!interEvent.scheduled()) 575 interEvent.schedule(curTick + Clock::Int::ns * 256 * regs.itr.interval()); 576 } 577 } 578} 579 580void 581IGbE::cpuPostInt() 582{ 583 if (rdtrEvent.scheduled()) { 584 regs.icr.rxt0(1); 585 rdtrEvent.deschedule(); 586 } 587 if (radvEvent.scheduled()) { 588 regs.icr.rxt0(1); 589 radvEvent.deschedule(); 590 } 591 if (tadvEvent.scheduled()) { 592 regs.icr.txdw(1); 593 tadvEvent.deschedule(); 594 } 595 if (tidvEvent.scheduled()) { 596 regs.icr.txdw(1); 597 tidvEvent.deschedule(); 598 } 599 600 regs.icr.int_assert(1); 601 DPRINTF(EthernetIntr, "EINT: Posting interrupt to CPU now. Vector %#x\n", 602 regs.icr()); 603 intrPost(); 604} 605 606void 607IGbE::cpuClearInt() 608{ 609 if (regs.icr.int_assert()) { 610 regs.icr.int_assert(0); 611 DPRINTF(EthernetIntr, "EINT: Clearing interrupt to CPU now. Vector %#x\n", 612 regs.icr()); 613 intrClear(); 614 } 615} 616 617void 618IGbE::chkInterrupt() 619{ 620 // Check if we need to clear the cpu interrupt 621 if (!(regs.icr() & regs.imr)) { 622 if (interEvent.scheduled()) 623 interEvent.deschedule(); 624 if (regs.icr.int_assert()) 625 cpuClearInt(); 626 } 627 628 if (regs.icr() & regs.imr) { 629 if (regs.itr.interval() == 0) { 630 cpuPostInt(); 631 } else { 632 if (!interEvent.scheduled()) 633 interEvent.schedule(curTick + Clock::Int::ns * 256 * regs.itr.interval()); 634 } 635 } 636 637 638} 639 640 641IGbE::RxDescCache::RxDescCache(IGbE *i, const std::string n, int s) 642 : DescCache<RxDesc>(i, n, s), pktDone(false), pktEvent(this) 643 644{ 645} 646 647bool 648IGbE::RxDescCache::writePacket(EthPacketPtr packet) 649{ 650 // We shouldn't have to deal with any of these yet 651 DPRINTF(EthernetDesc, "Packet Length: %d Desc Size: %d\n", 652 packet->length, igbe->regs.rctl.descSize()); 653 assert(packet->length < igbe->regs.rctl.descSize()); 654 655 if (!unusedCache.size()) 656 return false; 657 658 pktPtr = packet; 659 pktDone = false; 660 igbe->dmaWrite(igbe->platform->pciToDma(unusedCache.front()->buf), 661 packet->length, &pktEvent, packet->data); 662 return true; 663} 664 665void 666IGbE::RxDescCache::pktComplete() 667{ 668 assert(unusedCache.size()); 669 RxDesc *desc; 670 desc = unusedCache.front(); 671 672 uint16_t crcfixup = igbe->regs.rctl.secrc() ? 0 : 4 ; 673 desc->len = htole((uint16_t)(pktPtr->length + crcfixup)); 674 DPRINTF(EthernetDesc, "pktPtr->length: %d stripcrc offset: %d value written: %d %d\n", 675 pktPtr->length, crcfixup, 676 htole((uint16_t)(pktPtr->length + crcfixup)), 677 (uint16_t)(pktPtr->length + crcfixup)); 678 679 // no support for anything but starting at 0 680 assert(igbe->regs.rxcsum.pcss() == 0); 681 682 DPRINTF(EthernetDesc, "Packet written to memory updating Descriptor\n"); 683 684 uint8_t status = RXDS_DD | RXDS_EOP; 685 uint8_t err = 0; 686 687 IpPtr ip(pktPtr); 688 689 if (ip) { 690 DPRINTF(EthernetDesc, "Proccesing Ip packet with Id=%d\n", ip->id()); 691 692 if (igbe->regs.rxcsum.ipofld()) { 693 DPRINTF(EthernetDesc, "Checking IP checksum\n"); 694 status |= RXDS_IPCS; 695 desc->csum = htole(cksum(ip)); 696 if (cksum(ip) != 0) { 697 err |= RXDE_IPE; 698 DPRINTF(EthernetDesc, "Checksum is bad!!\n"); 699 } 700 } 701 TcpPtr tcp(ip); 702 if (tcp && igbe->regs.rxcsum.tuofld()) { 703 DPRINTF(EthernetDesc, "Checking TCP checksum\n"); 704 status |= RXDS_TCPCS; 705 desc->csum = htole(cksum(tcp)); 706 if (cksum(tcp) != 0) { 707 DPRINTF(EthernetDesc, "Checksum is bad!!\n"); 708 err |= RXDE_TCPE; 709 } 710 } 711 712 UdpPtr udp(ip); 713 if (udp && igbe->regs.rxcsum.tuofld()) { 714 DPRINTF(EthernetDesc, "Checking UDP checksum\n"); 715 status |= RXDS_UDPCS; 716 desc->csum = htole(cksum(udp)); 717 if (cksum(udp) != 0) { 718 DPRINTF(EthernetDesc, "Checksum is bad!!\n"); 719 err |= RXDE_TCPE; 720 } 721 } 722 } else { // if ip 723 DPRINTF(EthernetSM, "Proccesing Non-Ip packet\n"); 724 } 725 726 727 desc->status = htole(status); 728 desc->errors = htole(err); 729 730 // No vlan support at this point... just set it to 0 731 desc->vlan = 0; 732 733 // Deal with the rx timer interrupts 734 if (igbe->regs.rdtr.delay()) { 735 DPRINTF(EthernetSM, "RXS: Scheduling DTR for %d\n", 736 igbe->regs.rdtr.delay() * igbe->intClock()); 737 igbe->rdtrEvent.reschedule(curTick + igbe->regs.rdtr.delay() * 738 igbe->intClock(),true); 739 } 740 741 if (igbe->regs.radv.idv() && igbe->regs.rdtr.delay()) { 742 DPRINTF(EthernetSM, "RXS: Scheduling ADV for %d\n", 743 igbe->regs.radv.idv() * igbe->intClock()); 744 if (!igbe->radvEvent.scheduled()) 745 igbe->radvEvent.schedule(curTick + igbe->regs.radv.idv() * 746 igbe->intClock()); 747 } 748 749 // if neither radv or rdtr, maybe itr is set... 750 if (!igbe->regs.rdtr.delay()) { 751 DPRINTF(EthernetSM, "RXS: Receive interrupt delay disabled, posting IT_RXT\n"); 752 igbe->postInterrupt(IT_RXT); 753 } 754 755 // If the packet is small enough, interrupt appropriately 756 // I wonder if this is delayed or not?! 757 if (pktPtr->length <= igbe->regs.rsrpd.idv()) { 758 DPRINTF(EthernetSM, "RXS: Posting IT_SRPD beacuse small packet received\n"); 759 igbe->postInterrupt(IT_SRPD); 760 } 761 762 DPRINTF(EthernetDesc, "Processing of this descriptor complete\n"); 763 unusedCache.pop_front(); 764 usedCache.push_back(desc); 765 pktPtr = NULL; 766 enableSm(); 767 pktDone = true; 768 igbe->checkDrain(); 769} 770 771void 772IGbE::RxDescCache::enableSm() 773{ 774 igbe->rxTick = true; 775 igbe->restartClock(); 776} 777 778bool 779IGbE::RxDescCache::packetDone() 780{ 781 if (pktDone) { 782 pktDone = false; 783 return true; 784 } 785 return false; 786} 787 788bool 789IGbE::RxDescCache::hasOutstandingEvents() 790{ 791 return pktEvent.scheduled() || wbEvent.scheduled() || 792 fetchEvent.scheduled(); 793} 794 795void 796IGbE::RxDescCache::serialize(std::ostream &os) 797{ 798 DescCache<RxDesc>::serialize(os); 799 SERIALIZE_SCALAR(pktDone); 800} 801 802void 803IGbE::RxDescCache::unserialize(Checkpoint *cp, const std::string §ion) 804{ 805 DescCache<RxDesc>::unserialize(cp, section); 806 UNSERIALIZE_SCALAR(pktDone); 807} 808 809 810///////////////////////////////////// IGbE::TxDesc ///////////////////////////////// 811 812IGbE::TxDescCache::TxDescCache(IGbE *i, const std::string n, int s) 813 : DescCache<TxDesc>(i,n, s), pktDone(false), isTcp(false), pktWaiting(false), 814 pktEvent(this) 815 816{ 817} 818 819int 820IGbE::TxDescCache::getPacketSize() 821{ 822 assert(unusedCache.size()); 823 824 TxDesc *desc; 825 826 DPRINTF(EthernetDesc, "Starting processing of descriptor\n"); 827 828 while (unusedCache.size() && TxdOp::isContext(unusedCache.front())) { 829 DPRINTF(EthernetDesc, "Got context descriptor type... skipping\n"); 830 831 // I think we can just ignore these for now? 832 desc = unusedCache.front(); 833 // is this going to be a tcp or udp packet? 834 isTcp = TxdOp::tcp(desc) ? true : false; 835 836 // make sure it's ipv4 837 assert(TxdOp::ip(desc)); 838 839 TxdOp::setDd(desc); 840 unusedCache.pop_front(); 841 usedCache.push_back(desc); 842 } 843 844 if (!unusedCache.size()) 845 return -1; 846 847 DPRINTF(EthernetDesc, "Next TX packet is %d bytes\n", 848 TxdOp::getLen(unusedCache.front())); 849 850 return TxdOp::getLen(unusedCache.front()); 851} 852 853void 854IGbE::TxDescCache::getPacketData(EthPacketPtr p) 855{ 856 assert(unusedCache.size()); 857 858 TxDesc *desc; 859 desc = unusedCache.front(); 860 861 assert((TxdOp::isLegacy(desc) || TxdOp::isData(desc)) && TxdOp::getLen(desc)); 862 863 pktPtr = p; 864 865 pktWaiting = true; 866 867 DPRINTF(EthernetDesc, "Starting DMA of packet\n"); 868 igbe->dmaRead(igbe->platform->pciToDma(TxdOp::getBuf(desc)), 869 TxdOp::getLen(desc), &pktEvent, p->data + p->length); 870 871 872} 873 874void 875IGbE::TxDescCache::pktComplete() 876{ 877 878 TxDesc *desc; 879 assert(unusedCache.size()); 880 assert(pktPtr); 881 882 DPRINTF(EthernetDesc, "DMA of packet complete\n"); 883 884 885 desc = unusedCache.front(); 886 assert((TxdOp::isLegacy(desc) || TxdOp::isData(desc)) && TxdOp::getLen(desc)); 887 888 DPRINTF(EthernetDesc, "TxDescriptor data d1: %#llx d2: %#llx\n", desc->d1, desc->d2); 889 890 if (!TxdOp::eop(desc)) { 891 // This only supports two descriptors per tx packet 892 assert(pktPtr->length == 0); 893 pktPtr->length = TxdOp::getLen(desc); 894 unusedCache.pop_front(); 895 usedCache.push_back(desc); 896 pktDone = true; 897 pktWaiting = false; 898 pktPtr = NULL; 899 900 DPRINTF(EthernetDesc, "Partial Packet Descriptor Done\n"); 901 enableSm(); 902 return; 903 } 904 905 // Set the length of the data in the EtherPacket 906 pktPtr->length += TxdOp::getLen(desc); 907 908 // no support for vlans 909 assert(!TxdOp::vle(desc)); 910 911 // we alway report status 912 assert(TxdOp::rs(desc)); 913 914 // we only support single packet descriptors at this point 915 assert(TxdOp::eop(desc)); 916 917 // set that this packet is done 918 TxdOp::setDd(desc); 919 920 DPRINTF(EthernetDesc, "TxDescriptor data d1: %#llx d2: %#llx\n", desc->d1, desc->d2); 921 922 if (DTRACE(EthernetDesc)) { 923 IpPtr ip(pktPtr); 924 if (ip) 925 DPRINTF(EthernetDesc, "Proccesing Ip packet with Id=%d\n", 926 ip->id()); 927 else 928 DPRINTF(EthernetSM, "Proccesing Non-Ip packet\n"); 929 } 930 931 // Checksums are only ofloaded for new descriptor types 932 if (TxdOp::isData(desc) && ( TxdOp::ixsm(desc) || TxdOp::txsm(desc)) ) { 933 DPRINTF(EthernetDesc, "Calculating checksums for packet\n"); 934 IpPtr ip(pktPtr); 935 936 if (TxdOp::ixsm(desc)) { 937 ip->sum(0); 938 ip->sum(cksum(ip)); 939 DPRINTF(EthernetDesc, "Calculated IP checksum\n"); 940 } 941 if (TxdOp::txsm(desc)) { 942 if (isTcp) { 943 TcpPtr tcp(ip); 944 assert(tcp); 945 tcp->sum(0); 946 tcp->sum(cksum(tcp)); 947 DPRINTF(EthernetDesc, "Calculated TCP checksum\n"); 948 } else { 949 UdpPtr udp(ip); 950 assert(udp); 951 udp->sum(0); 952 udp->sum(cksum(udp)); 953 DPRINTF(EthernetDesc, "Calculated UDP checksum\n"); 954 } 955 } 956 } 957 958 if (TxdOp::ide(desc)) { 959 // Deal with the rx timer interrupts 960 DPRINTF(EthernetDesc, "Descriptor had IDE set\n"); 961 if (igbe->regs.tidv.idv()) { 962 DPRINTF(EthernetDesc, "setting tidv\n"); 963 igbe->tidvEvent.reschedule(curTick + igbe->regs.tidv.idv() * 964 igbe->intClock(), true); 965 } 966 967 if (igbe->regs.tadv.idv() && igbe->regs.tidv.idv()) { 968 DPRINTF(EthernetDesc, "setting tadv\n"); 969 if (!igbe->tadvEvent.scheduled()) 970 igbe->tadvEvent.schedule(curTick + igbe->regs.tadv.idv() * 971 igbe->intClock()); 972 } 973 } 974 975 976 977 unusedCache.pop_front(); 978 usedCache.push_back(desc); 979 pktDone = true; 980 pktWaiting = false; 981 pktPtr = NULL; 982 983 DPRINTF(EthernetDesc, "Descriptor Done\n"); 984 985 if (igbe->regs.txdctl.wthresh() == 0) { 986 DPRINTF(EthernetDesc, "WTHRESH == 0, writing back descriptor\n"); 987 writeback(0); 988 } else if (igbe->regs.txdctl.wthresh() >= usedCache.size()) { 989 DPRINTF(EthernetDesc, "used > WTHRESH, writing back descriptor\n"); 990 writeback((igbe->cacheBlockSize()-1)>>4); 991 } 992 enableSm(); 993 igbe->checkDrain(); 994} 995 996void 997IGbE::TxDescCache::serialize(std::ostream &os) 998{ 999 DescCache<TxDesc>::serialize(os); 1000 SERIALIZE_SCALAR(pktDone); 1001 SERIALIZE_SCALAR(isTcp); 1002 SERIALIZE_SCALAR(pktWaiting); 1003} 1004 1005void 1006IGbE::TxDescCache::unserialize(Checkpoint *cp, const std::string §ion) 1007{ 1008 DescCache<TxDesc>::unserialize(cp, section); 1009 UNSERIALIZE_SCALAR(pktDone); 1010 UNSERIALIZE_SCALAR(isTcp); 1011 UNSERIALIZE_SCALAR(pktWaiting); 1012} 1013 1014bool 1015IGbE::TxDescCache::packetAvailable() 1016{ 1017 if (pktDone) { 1018 pktDone = false; 1019 return true; 1020 } 1021 return false; 1022} 1023 1024void 1025IGbE::TxDescCache::enableSm() 1026{ 1027 igbe->txTick = true; 1028 igbe->restartClock(); 1029} 1030 1031bool 1032IGbE::TxDescCache::hasOutstandingEvents() 1033{ 1034 return pktEvent.scheduled() || wbEvent.scheduled() || 1035 fetchEvent.scheduled(); 1036} 1037 1038 1039///////////////////////////////////// IGbE ///////////////////////////////// 1040 1041void 1042IGbE::restartClock() 1043{ 1044 if (!tickEvent.scheduled() && (rxTick || txTick || txFifoTick) && getState() == 1045 SimObject::Running) 1046 tickEvent.schedule((curTick/cycles(1)) * cycles(1) + cycles(1)); 1047} 1048 1049unsigned int 1050IGbE::drain(Event *de) 1051{ 1052 unsigned int count; 1053 count = pioPort->drain(de) + dmaPort->drain(de); 1054 if (rxDescCache.hasOutstandingEvents() || 1055 txDescCache.hasOutstandingEvents()) { 1056 count++; 1057 drainEvent = de; 1058 } 1059 1060 txFifoTick = false; 1061 txTick = false; 1062 rxTick = false; 1063 1064 if (tickEvent.scheduled()) 1065 tickEvent.deschedule(); 1066 1067 if (count) 1068 changeState(Draining); 1069 else 1070 changeState(Drained); 1071 1072 return count; 1073} 1074 1075void 1076IGbE::resume() 1077{ 1078 SimObject::resume(); 1079 1080 txFifoTick = true; 1081 txTick = true; 1082 rxTick = true; 1083 1084 restartClock(); 1085} 1086 1087void 1088IGbE::checkDrain() 1089{ 1090 if (!drainEvent) 1091 return; 1092 1093 if (rxDescCache.hasOutstandingEvents() || 1094 txDescCache.hasOutstandingEvents()) { 1095 drainEvent->process(); 1096 drainEvent = NULL; 1097 } 1098} 1099 1100void 1101IGbE::txStateMachine() 1102{ 1103 if (!regs.tctl.en()) { 1104 txTick = false; 1105 DPRINTF(EthernetSM, "TXS: TX disabled, stopping ticking\n"); 1106 return; 1107 } 1108 1109 // If we have a packet available and it's length is not 0 (meaning it's not 1110 // a multidescriptor packet) put it in the fifo, otherwise an the next 1111 // iteration we'll get the rest of the data 1112 if (txPacket && txDescCache.packetAvailable() && txPacket->length) { 1113 bool success; 1114 DPRINTF(EthernetSM, "TXS: packet placed in TX FIFO\n"); 1115 success = txFifo.push(txPacket); 1116 txFifoTick = true; 1117 assert(success); 1118 txPacket = NULL; 1119 txDescCache.writeback((cacheBlockSize()-1)>>4); 1120 return; 1121 } 1122 1123 // Only support descriptor granularity 1124 assert(regs.txdctl.gran()); 1125 if (regs.txdctl.lwthresh() && txDescCache.descLeft() < (regs.txdctl.lwthresh() * 8)) { 1126 DPRINTF(EthernetSM, "TXS: LWTHRESH caused posting of TXDLOW\n"); 1127 postInterrupt(IT_TXDLOW); 1128 } 1129 1130 if (!txPacket) { 1131 txPacket = new EthPacketData(16384); 1132 } 1133 1134 if (!txDescCache.packetWaiting()) { 1135 if (txDescCache.descLeft() == 0) { 1136 DPRINTF(EthernetSM, "TXS: No descriptors left in ring, forcing " 1137 "writeback stopping ticking and posting TXQE\n"); 1138 txDescCache.writeback(0); 1139 txTick = false; 1140 postInterrupt(IT_TXQE, true); 1141 return; 1142 } 1143 1144 1145 if (!(txDescCache.descUnused())) { 1146 DPRINTF(EthernetSM, "TXS: No descriptors available in cache, fetching and stopping ticking\n"); 1147 txTick = false; 1148 txDescCache.fetchDescriptors(); 1149 return; 1150 } 1151 1152 int size; 1153 size = txDescCache.getPacketSize(); 1154 if (size > 0 && txFifo.avail() > size) { 1155 DPRINTF(EthernetSM, "TXS: Reserving %d bytes in FIFO and begining " 1156 "DMA of next packet\n", size); 1157 txFifo.reserve(size); 1158 txDescCache.getPacketData(txPacket); 1159 } else if (size <= 0) { 1160 DPRINTF(EthernetSM, "TXS: No packets to get, writing back used descriptors\n"); 1161 txDescCache.writeback(0); 1162 } else { 1163 DPRINTF(EthernetSM, "TXS: FIFO full, stopping ticking until space " 1164 "available in FIFO\n"); 1165 txDescCache.writeback((cacheBlockSize()-1)>>4); 1166 txTick = false; 1167 } 1168 1169 1170 return; 1171 } 1172 DPRINTF(EthernetSM, "TXS: Nothing to do, stopping ticking\n"); 1173 txTick = false; 1174} 1175 1176bool 1177IGbE::ethRxPkt(EthPacketPtr pkt) 1178{ 1179 DPRINTF(Ethernet, "RxFIFO: Receiving pcakte from wire\n"); 1180 if (!regs.rctl.en()) { 1181 DPRINTF(Ethernet, "RxFIFO: RX not enabled, dropping\n"); 1182 return true; 1183 } 1184 1185 // restart the state machines if they are stopped 1186 rxTick = true; 1187 if ((rxTick || txTick) && !tickEvent.scheduled()) { 1188 DPRINTF(EthernetSM, "RXS: received packet into fifo, starting ticking\n"); 1189 restartClock(); 1190 } 1191 1192 if (!rxFifo.push(pkt)) { 1193 DPRINTF(Ethernet, "RxFIFO: Packet won't fit in fifo... dropped\n"); 1194 postInterrupt(IT_RXO, true); 1195 return false; 1196 } 1197 return true; 1198} 1199 1200 1201void 1202IGbE::rxStateMachine() 1203{ 1204 if (!regs.rctl.en()) { 1205 rxTick = false; 1206 DPRINTF(EthernetSM, "RXS: RX disabled, stopping ticking\n"); 1207 return; 1208 } 1209 1210 // If the packet is done check for interrupts/descriptors/etc 1211 if (rxDescCache.packetDone()) { 1212 rxDmaPacket = false; 1213 DPRINTF(EthernetSM, "RXS: Packet completed DMA to memory\n"); 1214 int descLeft = rxDescCache.descLeft(); 1215 switch (regs.rctl.rdmts()) { 1216 case 2: if (descLeft > .125 * regs.rdlen()) break; 1217 case 1: if (descLeft > .250 * regs.rdlen()) break; 1218 case 0: if (descLeft > .500 * regs.rdlen()) break; 1219 DPRINTF(Ethernet, "RXS: Interrupting (RXDMT) because of descriptors left\n"); 1220 postInterrupt(IT_RXDMT); 1221 break; 1222 } 1223 1224 if (descLeft == 0) { 1225 DPRINTF(EthernetSM, "RXS: No descriptors left in ring, forcing" 1226 " writeback and stopping ticking\n"); 1227 rxDescCache.writeback(0); 1228 rxTick = false; 1229 } 1230 1231 // only support descriptor granulaties 1232 assert(regs.rxdctl.gran()); 1233 1234 if (regs.rxdctl.wthresh() >= rxDescCache.descUsed()) { 1235 DPRINTF(EthernetSM, "RXS: Writing back because WTHRESH >= descUsed\n"); 1236 if (regs.rxdctl.wthresh() < (cacheBlockSize()>>4)) 1237 rxDescCache.writeback(regs.rxdctl.wthresh()-1); 1238 else 1239 rxDescCache.writeback((cacheBlockSize()-1)>>4); 1240 } 1241 1242 if ((rxDescCache.descUnused() < regs.rxdctl.pthresh()) && 1243 ((rxDescCache.descLeft() - rxDescCache.descUnused()) > regs.rxdctl.hthresh())) { 1244 DPRINTF(EthernetSM, "RXS: Fetching descriptors because descUnused < PTHRESH\n"); 1245 rxDescCache.fetchDescriptors(); 1246 } 1247 1248 if (rxDescCache.descUnused() == 0) { 1249 DPRINTF(EthernetSM, "RXS: No descriptors available in cache, " 1250 "fetching descriptors and stopping ticking\n"); 1251 rxTick = false; 1252 rxDescCache.fetchDescriptors(); 1253 } 1254 return; 1255 } 1256 1257 if (rxDmaPacket) { 1258 DPRINTF(EthernetSM, "RXS: stopping ticking until packet DMA completes\n"); 1259 rxTick = false; 1260 return; 1261 } 1262 1263 if (!rxDescCache.descUnused()) { 1264 DPRINTF(EthernetSM, "RXS: No descriptors available in cache, stopping ticking\n"); 1265 rxTick = false; 1266 DPRINTF(EthernetSM, "RXS: No descriptors available, fetching\n"); 1267 rxDescCache.fetchDescriptors(); 1268 return; 1269 } 1270 1271 if (rxFifo.empty()) { 1272 DPRINTF(EthernetSM, "RXS: RxFIFO empty, stopping ticking\n"); 1273 rxTick = false; 1274 return; 1275 } 1276 1277 EthPacketPtr pkt; 1278 pkt = rxFifo.front(); 1279 1280 DPRINTF(EthernetSM, "RXS: Writing packet into memory\n"); 1281 if (!rxDescCache.writePacket(pkt)) { 1282 return; 1283 } 1284 1285 DPRINTF(EthernetSM, "RXS: Removing packet from FIFO\n"); 1286 rxFifo.pop(); 1287 DPRINTF(EthernetSM, "RXS: stopping ticking until packet DMA completes\n"); 1288 rxTick = false; 1289 rxDmaPacket = true; 1290} 1291 1292void 1293IGbE::txWire() 1294{ 1295 if (txFifo.empty()) { 1296 txFifoTick = false; 1297 return; 1298 } 1299 1300 1301 if (etherInt->sendPacket(txFifo.front())) { 1302 DPRINTF(EthernetSM, "TxFIFO: Successful transmit, bytes available in fifo: %d\n", 1303 txFifo.avail()); 1304 txFifo.pop(); 1305 } else { 1306 // We'll get woken up when the packet ethTxDone() gets called 1307 txFifoTick = false; 1308 } 1309 1310} 1311 1312void 1313IGbE::tick() 1314{ 1315 DPRINTF(EthernetSM, "IGbE: -------------- Cycle --------------\n"); 1316 1317 if (rxTick) 1318 rxStateMachine(); 1319 1320 if (txTick) 1321 txStateMachine(); 1322 1323 if (txFifoTick) 1324 txWire(); 1325 1326 1327 if (rxTick || txTick || txFifoTick) 1328 tickEvent.schedule(curTick + cycles(1)); 1329} 1330 1331void 1332IGbE::ethTxDone() 1333{ 1334 // restart the tx state machines if they are stopped 1335 // fifo to send another packet 1336 // tx sm to put more data into the fifo 1337 txFifoTick = true; 1338 txTick = true; 1339 1340 restartClock(); 1341 DPRINTF(EthernetSM, "TxFIFO: Transmission complete\n"); 1342} 1343 1344void 1345IGbE::serialize(std::ostream &os) 1346{ 1347 PciDev::serialize(os); 1348 1349 regs.serialize(os); 1350 SERIALIZE_SCALAR(eeOpBits); 1351 SERIALIZE_SCALAR(eeAddrBits); 1352 SERIALIZE_SCALAR(eeDataBits); 1353 SERIALIZE_SCALAR(eeOpcode); 1354 SERIALIZE_SCALAR(eeAddr); 1355 SERIALIZE_ARRAY(flash,iGbReg::EEPROM_SIZE); 1356 1357 rxFifo.serialize("rxfifo", os); 1358 txFifo.serialize("txfifo", os); 1359 1360 bool txPktExists = txPacket; 1361 SERIALIZE_SCALAR(txPktExists); 1362 if (txPktExists) 1363 txPacket->serialize("txpacket", os); 1364 1365 Tick rdtr_time = 0, radv_time = 0, tidv_time = 0, tadv_time = 0, 1366 inter_time = 0; 1367 1368 if (rdtrEvent.scheduled()) 1369 rdtr_time = rdtrEvent.when(); 1370 SERIALIZE_SCALAR(rdtr_time); 1371 1372 if (radvEvent.scheduled()) 1373 radv_time = radvEvent.when(); 1374 SERIALIZE_SCALAR(radv_time); 1375 1376 if (tidvEvent.scheduled()) 1377 rdtr_time = tidvEvent.when(); 1378 SERIALIZE_SCALAR(tidv_time); 1379 1380 if (tadvEvent.scheduled()) 1381 rdtr_time = tadvEvent.when(); 1382 SERIALIZE_SCALAR(tadv_time); 1383 1384 if (interEvent.scheduled()) 1385 rdtr_time = interEvent.when(); 1386 SERIALIZE_SCALAR(inter_time); 1387 1388 nameOut(os, csprintf("%s.TxDescCache", name())); 1389 txDescCache.serialize(os); 1390 1391 nameOut(os, csprintf("%s.RxDescCache", name())); 1392 rxDescCache.serialize(os); 1393} 1394 1395void 1396IGbE::unserialize(Checkpoint *cp, const std::string §ion) 1397{ 1398 PciDev::unserialize(cp, section); 1399 1400 regs.unserialize(cp, section); 1401 UNSERIALIZE_SCALAR(eeOpBits); 1402 UNSERIALIZE_SCALAR(eeAddrBits); 1403 UNSERIALIZE_SCALAR(eeDataBits); 1404 UNSERIALIZE_SCALAR(eeOpcode); 1405 UNSERIALIZE_SCALAR(eeAddr); 1406 UNSERIALIZE_ARRAY(flash,iGbReg::EEPROM_SIZE); 1407 1408 rxFifo.unserialize("rxfifo", cp, section); 1409 txFifo.unserialize("txfifo", cp, section); 1410 1411 bool txPktExists; 1412 UNSERIALIZE_SCALAR(txPktExists); 1413 if (txPktExists) { 1414 txPacket = new EthPacketData(16384); 1415 txPacket->unserialize("txpacket", cp, section); 1416 } 1417 1418 rxTick = true; 1419 txTick = true; 1420 txFifoTick = true; 1421 1422 Tick rdtr_time, radv_time, tidv_time, tadv_time, inter_time; 1423 UNSERIALIZE_SCALAR(rdtr_time); 1424 UNSERIALIZE_SCALAR(radv_time); 1425 UNSERIALIZE_SCALAR(tidv_time); 1426 UNSERIALIZE_SCALAR(tadv_time); 1427 UNSERIALIZE_SCALAR(inter_time); 1428 1429 if (rdtr_time) 1430 rdtrEvent.schedule(rdtr_time); 1431 1432 if (radv_time) 1433 radvEvent.schedule(radv_time); 1434 1435 if (tidv_time) 1436 tidvEvent.schedule(tidv_time); 1437 1438 if (tadv_time) 1439 tadvEvent.schedule(tadv_time); 1440 1441 if (inter_time) 1442 interEvent.schedule(inter_time); 1443 1444 txDescCache.unserialize(cp, csprintf("%s.TxDescCache", section)); 1445 1446 rxDescCache.unserialize(cp, csprintf("%s.RxDescCache", section)); 1447} 1448 1449 1450BEGIN_DECLARE_SIM_OBJECT_PARAMS(IGbEInt) 1451 1452 SimObjectParam<EtherInt *> peer; 1453 SimObjectParam<IGbE *> device; 1454 1455END_DECLARE_SIM_OBJECT_PARAMS(IGbEInt) 1456 1457BEGIN_INIT_SIM_OBJECT_PARAMS(IGbEInt) 1458 1459 INIT_PARAM_DFLT(peer, "peer interface", NULL), 1460 INIT_PARAM(device, "Ethernet device of this interface") 1461 1462END_INIT_SIM_OBJECT_PARAMS(IGbEInt) 1463 1464CREATE_SIM_OBJECT(IGbEInt) 1465{ 1466 IGbEInt *dev_int = new IGbEInt(getInstanceName(), device); 1467 1468 EtherInt *p = (EtherInt *)peer; 1469 if (p) { 1470 dev_int->setPeer(p); 1471 p->setPeer(dev_int); 1472 } 1473 1474 return dev_int; 1475} 1476 1477REGISTER_SIM_OBJECT("IGbEInt", IGbEInt) 1478 1479 1480BEGIN_DECLARE_SIM_OBJECT_PARAMS(IGbE) 1481 1482 SimObjectParam<System *> system; 1483 SimObjectParam<Platform *> platform; 1484 Param<Tick> min_backoff_delay; 1485 Param<Tick> max_backoff_delay; 1486 SimObjectParam<PciConfigData *> configdata; 1487 Param<uint32_t> pci_bus; 1488 Param<uint32_t> pci_dev; 1489 Param<uint32_t> pci_func; 1490 Param<Tick> pio_latency; 1491 Param<Tick> config_latency; 1492 Param<std::string> hardware_address; 1493 Param<bool> use_flow_control; 1494 Param<int> rx_fifo_size; 1495 Param<int> tx_fifo_size; 1496 Param<int> rx_desc_cache_size; 1497 Param<int> tx_desc_cache_size; 1498 Param<Tick> clock; 1499 1500 1501END_DECLARE_SIM_OBJECT_PARAMS(IGbE) 1502 1503BEGIN_INIT_SIM_OBJECT_PARAMS(IGbE) 1504 1505 INIT_PARAM(system, "System pointer"), 1506 INIT_PARAM(platform, "Platform pointer"), 1507 INIT_PARAM(min_backoff_delay, "Minimum delay after receving a nack packed"), 1508 INIT_PARAM(max_backoff_delay, "Maximum delay after receving a nack packed"), 1509 INIT_PARAM(configdata, "PCI Config data"), 1510 INIT_PARAM(pci_bus, "PCI bus ID"), 1511 INIT_PARAM(pci_dev, "PCI device number"), 1512 INIT_PARAM(pci_func, "PCI function code"), 1513 INIT_PARAM_DFLT(pio_latency, "Programmed IO latency in bus cycles", 1), 1514 INIT_PARAM(config_latency, "Number of cycles for a config read or write"), 1515 INIT_PARAM(hardware_address, "Ethernet Hardware Address"), 1516 INIT_PARAM(use_flow_control,"Should the device use xon/off packets"), 1517 INIT_PARAM(rx_fifo_size,"Size of the RX FIFO"), 1518 INIT_PARAM(tx_fifo_size,"Size of the TX FIFO"), 1519 INIT_PARAM(rx_desc_cache_size,"Size of the RX descriptor cache"), 1520 INIT_PARAM(tx_desc_cache_size,"Size of the TX descriptor cache"), 1521 INIT_PARAM(clock,"Clock rate for the device to tick at") 1522 1523END_INIT_SIM_OBJECT_PARAMS(IGbE) 1524 1525 1526CREATE_SIM_OBJECT(IGbE) 1527{ 1528 IGbE::Params *params = new IGbE::Params; 1529 1530 params->name = getInstanceName(); 1531 params->platform = platform; 1532 params->system = system; 1533 params->min_backoff_delay = min_backoff_delay; 1534 params->max_backoff_delay = max_backoff_delay; 1535 params->configData = configdata; 1536 params->busNum = pci_bus; 1537 params->deviceNum = pci_dev; 1538 params->functionNum = pci_func; 1539 params->pio_delay = pio_latency; 1540 params->config_delay = config_latency; 1541 params->hardware_address = hardware_address; 1542 params->use_flow_control = use_flow_control; 1543 params->rx_fifo_size = rx_fifo_size; 1544 params->tx_fifo_size = tx_fifo_size; 1545 params->rx_desc_cache_size = rx_desc_cache_size; 1546 params->tx_desc_cache_size = tx_desc_cache_size; 1547 params->clock = clock; 1548 1549 1550 return new IGbE(params); 1551} 1552 1553REGISTER_SIM_OBJECT("IGbE", IGbE) 1554