i8254xGBe.cc revision 9807
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 <algorithm> 44 45#include "base/inet.hh" 46#include "base/trace.hh" 47#include "debug/Drain.hh" 48#include "debug/EthernetAll.hh" 49#include "dev/i8254xGBe.hh" 50#include "mem/packet.hh" 51#include "mem/packet_access.hh" 52#include "params/IGbE.hh" 53#include "sim/stats.hh" 54#include "sim/system.hh" 55 56using namespace iGbReg; 57using namespace Net; 58 59IGbE::IGbE(const Params *p) 60 : EtherDevice(p), etherInt(NULL), drainManager(NULL), 61 rxFifo(p->rx_fifo_size), txFifo(p->tx_fifo_size), rxTick(false), 62 txTick(false), txFifoTick(false), rxDmaPacket(false), pktOffset(0), 63 fetchDelay(p->fetch_delay), wbDelay(p->wb_delay), 64 fetchCompDelay(p->fetch_comp_delay), wbCompDelay(p->wb_comp_delay), 65 rxWriteDelay(p->rx_write_delay), txReadDelay(p->tx_read_delay), 66 rdtrEvent(this), radvEvent(this), 67 tadvEvent(this), tidvEvent(this), tickEvent(this), interEvent(this), 68 rxDescCache(this, name()+".RxDesc", p->rx_desc_cache_size), 69 txDescCache(this, name()+".TxDesc", p->tx_desc_cache_size), 70 lastInterrupt(0) 71{ 72 etherInt = new IGbEInt(name() + ".int", this); 73 74 // Initialized internal registers per Intel documentation 75 // All registers intialized to 0 by per register constructor 76 regs.ctrl.fd(1); 77 regs.ctrl.lrst(1); 78 regs.ctrl.speed(2); 79 regs.ctrl.frcspd(1); 80 regs.sts.speed(3); // Say we're 1000Mbps 81 regs.sts.fd(1); // full duplex 82 regs.sts.lu(1); // link up 83 regs.eecd.fwe(1); 84 regs.eecd.ee_type(1); 85 regs.imr = 0; 86 regs.iam = 0; 87 regs.rxdctl.gran(1); 88 regs.rxdctl.wthresh(1); 89 regs.fcrth(1); 90 regs.tdwba = 0; 91 regs.rlpml = 0; 92 regs.sw_fw_sync = 0; 93 94 regs.pba.rxa(0x30); 95 regs.pba.txa(0x10); 96 97 eeOpBits = 0; 98 eeAddrBits = 0; 99 eeDataBits = 0; 100 eeOpcode = 0; 101 102 // clear all 64 16 bit words of the eeprom 103 memset(&flash, 0, EEPROM_SIZE*2); 104 105 // Set the MAC address 106 memcpy(flash, p->hardware_address.bytes(), ETH_ADDR_LEN); 107 for (int x = 0; x < ETH_ADDR_LEN/2; x++) 108 flash[x] = htobe(flash[x]); 109 110 uint16_t csum = 0; 111 for (int x = 0; x < EEPROM_SIZE; x++) 112 csum += htobe(flash[x]); 113 114 115 // Magic happy checksum value 116 flash[EEPROM_SIZE-1] = htobe((uint16_t)(EEPROM_CSUM - csum)); 117 118 // Store the MAC address as queue ID 119 macAddr = p->hardware_address; 120 121 rxFifo.clear(); 122 txFifo.clear(); 123} 124 125IGbE::~IGbE() 126{ 127 delete etherInt; 128} 129 130void 131IGbE::init() 132{ 133 cpa = CPA::cpa(); 134 PciDevice::init(); 135} 136 137EtherInt* 138IGbE::getEthPort(const std::string &if_name, int idx) 139{ 140 141 if (if_name == "interface") { 142 if (etherInt->getPeer()) 143 panic("Port already connected to\n"); 144 return etherInt; 145 } 146 return NULL; 147} 148 149Tick 150IGbE::writeConfig(PacketPtr pkt) 151{ 152 int offset = pkt->getAddr() & PCI_CONFIG_SIZE; 153 if (offset < PCI_DEVICE_SPECIFIC) 154 PciDevice::writeConfig(pkt); 155 else 156 panic("Device specific PCI config space not implemented.\n"); 157 158 // 159 // Some work may need to be done here based for the pci COMMAND bits. 160 // 161 162 return configDelay; 163} 164 165// Handy macro for range-testing register access addresses 166#define IN_RANGE(val, base, len) (val >= base && val < (base + len)) 167 168Tick 169IGbE::read(PacketPtr pkt) 170{ 171 int bar; 172 Addr daddr; 173 174 if (!getBAR(pkt->getAddr(), bar, daddr)) 175 panic("Invalid PCI memory access to unmapped memory.\n"); 176 177 // Only Memory register BAR is allowed 178 assert(bar == 0); 179 180 // Only 32bit accesses allowed 181 assert(pkt->getSize() == 4); 182 183 DPRINTF(Ethernet, "Read device register %#X\n", daddr); 184 185 pkt->allocate(); 186 187 // 188 // Handle read of register here 189 // 190 191 192 switch (daddr) { 193 case REG_CTRL: 194 pkt->set<uint32_t>(regs.ctrl()); 195 break; 196 case REG_STATUS: 197 pkt->set<uint32_t>(regs.sts()); 198 break; 199 case REG_EECD: 200 pkt->set<uint32_t>(regs.eecd()); 201 break; 202 case REG_EERD: 203 pkt->set<uint32_t>(regs.eerd()); 204 break; 205 case REG_CTRL_EXT: 206 pkt->set<uint32_t>(regs.ctrl_ext()); 207 break; 208 case REG_MDIC: 209 pkt->set<uint32_t>(regs.mdic()); 210 break; 211 case REG_ICR: 212 DPRINTF(Ethernet, "Reading ICR. ICR=%#x IMR=%#x IAM=%#x IAME=%d\n", 213 regs.icr(), regs.imr, regs.iam, regs.ctrl_ext.iame()); 214 pkt->set<uint32_t>(regs.icr()); 215 if (regs.icr.int_assert() || regs.imr == 0) { 216 regs.icr = regs.icr() & ~mask(30); 217 DPRINTF(Ethernet, "Cleared ICR. ICR=%#x\n", regs.icr()); 218 } 219 if (regs.ctrl_ext.iame() && regs.icr.int_assert()) 220 regs.imr &= ~regs.iam; 221 chkInterrupt(); 222 break; 223 case REG_EICR: 224 // This is only useful for MSI, but the driver reads it every time 225 // Just don't do anything 226 pkt->set<uint32_t>(0); 227 break; 228 case REG_ITR: 229 pkt->set<uint32_t>(regs.itr()); 230 break; 231 case REG_RCTL: 232 pkt->set<uint32_t>(regs.rctl()); 233 break; 234 case REG_FCTTV: 235 pkt->set<uint32_t>(regs.fcttv()); 236 break; 237 case REG_TCTL: 238 pkt->set<uint32_t>(regs.tctl()); 239 break; 240 case REG_PBA: 241 pkt->set<uint32_t>(regs.pba()); 242 break; 243 case REG_WUC: 244 case REG_LEDCTL: 245 pkt->set<uint32_t>(0); // We don't care, so just return 0 246 break; 247 case REG_FCRTL: 248 pkt->set<uint32_t>(regs.fcrtl()); 249 break; 250 case REG_FCRTH: 251 pkt->set<uint32_t>(regs.fcrth()); 252 break; 253 case REG_RDBAL: 254 pkt->set<uint32_t>(regs.rdba.rdbal()); 255 break; 256 case REG_RDBAH: 257 pkt->set<uint32_t>(regs.rdba.rdbah()); 258 break; 259 case REG_RDLEN: 260 pkt->set<uint32_t>(regs.rdlen()); 261 break; 262 case REG_SRRCTL: 263 pkt->set<uint32_t>(regs.srrctl()); 264 break; 265 case REG_RDH: 266 pkt->set<uint32_t>(regs.rdh()); 267 break; 268 case REG_RDT: 269 pkt->set<uint32_t>(regs.rdt()); 270 break; 271 case REG_RDTR: 272 pkt->set<uint32_t>(regs.rdtr()); 273 if (regs.rdtr.fpd()) { 274 rxDescCache.writeback(0); 275 DPRINTF(EthernetIntr, 276 "Posting interrupt because of RDTR.FPD write\n"); 277 postInterrupt(IT_RXT); 278 regs.rdtr.fpd(0); 279 } 280 break; 281 case REG_RXDCTL: 282 pkt->set<uint32_t>(regs.rxdctl()); 283 break; 284 case REG_RADV: 285 pkt->set<uint32_t>(regs.radv()); 286 break; 287 case REG_TDBAL: 288 pkt->set<uint32_t>(regs.tdba.tdbal()); 289 break; 290 case REG_TDBAH: 291 pkt->set<uint32_t>(regs.tdba.tdbah()); 292 break; 293 case REG_TDLEN: 294 pkt->set<uint32_t>(regs.tdlen()); 295 break; 296 case REG_TDH: 297 pkt->set<uint32_t>(regs.tdh()); 298 break; 299 case REG_TXDCA_CTL: 300 pkt->set<uint32_t>(regs.txdca_ctl()); 301 break; 302 case REG_TDT: 303 pkt->set<uint32_t>(regs.tdt()); 304 break; 305 case REG_TIDV: 306 pkt->set<uint32_t>(regs.tidv()); 307 break; 308 case REG_TXDCTL: 309 pkt->set<uint32_t>(regs.txdctl()); 310 break; 311 case REG_TADV: 312 pkt->set<uint32_t>(regs.tadv()); 313 break; 314 case REG_TDWBAL: 315 pkt->set<uint32_t>(regs.tdwba & mask(32)); 316 break; 317 case REG_TDWBAH: 318 pkt->set<uint32_t>(regs.tdwba >> 32); 319 break; 320 case REG_RXCSUM: 321 pkt->set<uint32_t>(regs.rxcsum()); 322 break; 323 case REG_RLPML: 324 pkt->set<uint32_t>(regs.rlpml); 325 break; 326 case REG_RFCTL: 327 pkt->set<uint32_t>(regs.rfctl()); 328 break; 329 case REG_MANC: 330 pkt->set<uint32_t>(regs.manc()); 331 break; 332 case REG_SWSM: 333 pkt->set<uint32_t>(regs.swsm()); 334 regs.swsm.smbi(1); 335 break; 336 case REG_FWSM: 337 pkt->set<uint32_t>(regs.fwsm()); 338 break; 339 case REG_SWFWSYNC: 340 pkt->set<uint32_t>(regs.sw_fw_sync); 341 break; 342 default: 343 if (!IN_RANGE(daddr, REG_VFTA, VLAN_FILTER_TABLE_SIZE*4) && 344 !IN_RANGE(daddr, REG_RAL, RCV_ADDRESS_TABLE_SIZE*8) && 345 !IN_RANGE(daddr, REG_MTA, MULTICAST_TABLE_SIZE*4) && 346 !IN_RANGE(daddr, REG_CRCERRS, STATS_REGS_SIZE)) 347 panic("Read request to unknown register number: %#x\n", daddr); 348 else 349 pkt->set<uint32_t>(0); 350 }; 351 352 pkt->makeAtomicResponse(); 353 return pioDelay; 354} 355 356Tick 357IGbE::write(PacketPtr pkt) 358{ 359 int bar; 360 Addr daddr; 361 362 363 if (!getBAR(pkt->getAddr(), bar, daddr)) 364 panic("Invalid PCI memory access to unmapped memory.\n"); 365 366 // Only Memory register BAR is allowed 367 assert(bar == 0); 368 369 // Only 32bit accesses allowed 370 assert(pkt->getSize() == sizeof(uint32_t)); 371 372 DPRINTF(Ethernet, "Wrote device register %#X value %#X\n", 373 daddr, pkt->get<uint32_t>()); 374 375 // 376 // Handle write of register here 377 // 378 uint32_t val = pkt->get<uint32_t>(); 379 380 Regs::RCTL oldrctl; 381 Regs::TCTL oldtctl; 382 383 switch (daddr) { 384 case REG_CTRL: 385 regs.ctrl = val; 386 if (regs.ctrl.tfce()) 387 warn("TX Flow control enabled, should implement\n"); 388 if (regs.ctrl.rfce()) 389 warn("RX Flow control enabled, should implement\n"); 390 break; 391 case REG_CTRL_EXT: 392 regs.ctrl_ext = val; 393 break; 394 case REG_STATUS: 395 regs.sts = val; 396 break; 397 case REG_EECD: 398 int oldClk; 399 oldClk = regs.eecd.sk(); 400 regs.eecd = val; 401 // See if this is a eeprom access and emulate accordingly 402 if (!oldClk && regs.eecd.sk()) { 403 if (eeOpBits < 8) { 404 eeOpcode = eeOpcode << 1 | regs.eecd.din(); 405 eeOpBits++; 406 } else if (eeAddrBits < 8 && eeOpcode == EEPROM_READ_OPCODE_SPI) { 407 eeAddr = eeAddr << 1 | regs.eecd.din(); 408 eeAddrBits++; 409 } else if (eeDataBits < 16 && eeOpcode == EEPROM_READ_OPCODE_SPI) { 410 assert(eeAddr>>1 < EEPROM_SIZE); 411 DPRINTF(EthernetEEPROM, "EEPROM bit read: %d word: %#X\n", 412 flash[eeAddr>>1] >> eeDataBits & 0x1, 413 flash[eeAddr>>1]); 414 regs.eecd.dout((flash[eeAddr>>1] >> (15-eeDataBits)) & 0x1); 415 eeDataBits++; 416 } else if (eeDataBits < 8 && eeOpcode == EEPROM_RDSR_OPCODE_SPI) { 417 regs.eecd.dout(0); 418 eeDataBits++; 419 } else 420 panic("What's going on with eeprom interface? opcode:" 421 " %#x:%d addr: %#x:%d, data: %d\n", (uint32_t)eeOpcode, 422 (uint32_t)eeOpBits, (uint32_t)eeAddr, 423 (uint32_t)eeAddrBits, (uint32_t)eeDataBits); 424 425 // Reset everything for the next command 426 if ((eeDataBits == 16 && eeOpcode == EEPROM_READ_OPCODE_SPI) || 427 (eeDataBits == 8 && eeOpcode == EEPROM_RDSR_OPCODE_SPI)) { 428 eeOpBits = 0; 429 eeAddrBits = 0; 430 eeDataBits = 0; 431 eeOpcode = 0; 432 eeAddr = 0; 433 } 434 435 DPRINTF(EthernetEEPROM, "EEPROM: opcode: %#X:%d addr: %#X:%d\n", 436 (uint32_t)eeOpcode, (uint32_t) eeOpBits, 437 (uint32_t)eeAddr>>1, (uint32_t)eeAddrBits); 438 if (eeOpBits == 8 && !(eeOpcode == EEPROM_READ_OPCODE_SPI || 439 eeOpcode == EEPROM_RDSR_OPCODE_SPI )) 440 panic("Unknown eeprom opcode: %#X:%d\n", (uint32_t)eeOpcode, 441 (uint32_t)eeOpBits); 442 443 444 } 445 // If driver requests eeprom access, immediately give it to it 446 regs.eecd.ee_gnt(regs.eecd.ee_req()); 447 break; 448 case REG_EERD: 449 regs.eerd = val; 450 if (regs.eerd.start()) { 451 regs.eerd.done(1); 452 assert(regs.eerd.addr() < EEPROM_SIZE); 453 regs.eerd.data(flash[regs.eerd.addr()]); 454 regs.eerd.start(0); 455 DPRINTF(EthernetEEPROM, "EEPROM: read addr: %#X data %#x\n", 456 regs.eerd.addr(), regs.eerd.data()); 457 } 458 break; 459 case REG_MDIC: 460 regs.mdic = val; 461 if (regs.mdic.i()) 462 panic("No support for interrupt on mdic complete\n"); 463 if (regs.mdic.phyadd() != 1) 464 panic("No support for reading anything but phy\n"); 465 DPRINTF(Ethernet, "%s phy address %x\n", 466 regs.mdic.op() == 1 ? "Writing" : "Reading", 467 regs.mdic.regadd()); 468 switch (regs.mdic.regadd()) { 469 case PHY_PSTATUS: 470 regs.mdic.data(0x796D); // link up 471 break; 472 case PHY_PID: 473 regs.mdic.data(params()->phy_pid); 474 break; 475 case PHY_EPID: 476 regs.mdic.data(params()->phy_epid); 477 break; 478 case PHY_GSTATUS: 479 regs.mdic.data(0x7C00); 480 break; 481 case PHY_EPSTATUS: 482 regs.mdic.data(0x3000); 483 break; 484 case PHY_AGC: 485 regs.mdic.data(0x180); // some random length 486 break; 487 default: 488 regs.mdic.data(0); 489 } 490 regs.mdic.r(1); 491 break; 492 case REG_ICR: 493 DPRINTF(Ethernet, "Writing ICR. ICR=%#x IMR=%#x IAM=%#x IAME=%d\n", 494 regs.icr(), regs.imr, regs.iam, regs.ctrl_ext.iame()); 495 if (regs.ctrl_ext.iame()) 496 regs.imr &= ~regs.iam; 497 regs.icr = ~bits(val,30,0) & regs.icr(); 498 chkInterrupt(); 499 break; 500 case REG_ITR: 501 regs.itr = val; 502 break; 503 case REG_ICS: 504 DPRINTF(EthernetIntr, "Posting interrupt because of ICS write\n"); 505 postInterrupt((IntTypes)val); 506 break; 507 case REG_IMS: 508 regs.imr |= val; 509 chkInterrupt(); 510 break; 511 case REG_IMC: 512 regs.imr &= ~val; 513 chkInterrupt(); 514 break; 515 case REG_IAM: 516 regs.iam = val; 517 break; 518 case REG_RCTL: 519 oldrctl = regs.rctl; 520 regs.rctl = val; 521 if (regs.rctl.rst()) { 522 rxDescCache.reset(); 523 DPRINTF(EthernetSM, "RXS: Got RESET!\n"); 524 rxFifo.clear(); 525 regs.rctl.rst(0); 526 } 527 if (regs.rctl.en()) 528 rxTick = true; 529 restartClock(); 530 break; 531 case REG_FCTTV: 532 regs.fcttv = val; 533 break; 534 case REG_TCTL: 535 regs.tctl = val; 536 oldtctl = regs.tctl; 537 regs.tctl = val; 538 if (regs.tctl.en()) 539 txTick = true; 540 restartClock(); 541 if (regs.tctl.en() && !oldtctl.en()) { 542 txDescCache.reset(); 543 } 544 break; 545 case REG_PBA: 546 regs.pba.rxa(val); 547 regs.pba.txa(64 - regs.pba.rxa()); 548 break; 549 case REG_WUC: 550 case REG_LEDCTL: 551 case REG_FCAL: 552 case REG_FCAH: 553 case REG_FCT: 554 case REG_VET: 555 case REG_AIFS: 556 case REG_TIPG: 557 ; // We don't care, so don't store anything 558 break; 559 case REG_IVAR0: 560 warn("Writing to IVAR0, ignoring...\n"); 561 break; 562 case REG_FCRTL: 563 regs.fcrtl = val; 564 break; 565 case REG_FCRTH: 566 regs.fcrth = val; 567 break; 568 case REG_RDBAL: 569 regs.rdba.rdbal( val & ~mask(4)); 570 rxDescCache.areaChanged(); 571 break; 572 case REG_RDBAH: 573 regs.rdba.rdbah(val); 574 rxDescCache.areaChanged(); 575 break; 576 case REG_RDLEN: 577 regs.rdlen = val & ~mask(7); 578 rxDescCache.areaChanged(); 579 break; 580 case REG_SRRCTL: 581 regs.srrctl = val; 582 break; 583 case REG_RDH: 584 regs.rdh = val; 585 rxDescCache.areaChanged(); 586 break; 587 case REG_RDT: 588 regs.rdt = val; 589 DPRINTF(EthernetSM, "RXS: RDT Updated.\n"); 590 if (getDrainState() == Drainable::Running) { 591 DPRINTF(EthernetSM, "RXS: RDT Fetching Descriptors!\n"); 592 rxDescCache.fetchDescriptors(); 593 } else { 594 DPRINTF(EthernetSM, "RXS: RDT NOT Fetching Desc b/c draining!\n"); 595 } 596 break; 597 case REG_RDTR: 598 regs.rdtr = val; 599 break; 600 case REG_RADV: 601 regs.radv = val; 602 break; 603 case REG_RXDCTL: 604 regs.rxdctl = val; 605 break; 606 case REG_TDBAL: 607 regs.tdba.tdbal( val & ~mask(4)); 608 txDescCache.areaChanged(); 609 break; 610 case REG_TDBAH: 611 regs.tdba.tdbah(val); 612 txDescCache.areaChanged(); 613 break; 614 case REG_TDLEN: 615 regs.tdlen = val & ~mask(7); 616 txDescCache.areaChanged(); 617 break; 618 case REG_TDH: 619 regs.tdh = val; 620 txDescCache.areaChanged(); 621 break; 622 case REG_TXDCA_CTL: 623 regs.txdca_ctl = val; 624 if (regs.txdca_ctl.enabled()) 625 panic("No support for DCA\n"); 626 break; 627 case REG_TDT: 628 regs.tdt = val; 629 DPRINTF(EthernetSM, "TXS: TX Tail pointer updated\n"); 630 if (getDrainState() == Drainable::Running) { 631 DPRINTF(EthernetSM, "TXS: TDT Fetching Descriptors!\n"); 632 txDescCache.fetchDescriptors(); 633 } else { 634 DPRINTF(EthernetSM, "TXS: TDT NOT Fetching Desc b/c draining!\n"); 635 } 636 break; 637 case REG_TIDV: 638 regs.tidv = val; 639 break; 640 case REG_TXDCTL: 641 regs.txdctl = val; 642 break; 643 case REG_TADV: 644 regs.tadv = val; 645 break; 646 case REG_TDWBAL: 647 regs.tdwba &= ~mask(32); 648 regs.tdwba |= val; 649 txDescCache.completionWriteback(regs.tdwba & ~mask(1), 650 regs.tdwba & mask(1)); 651 break; 652 case REG_TDWBAH: 653 regs.tdwba &= mask(32); 654 regs.tdwba |= (uint64_t)val << 32; 655 txDescCache.completionWriteback(regs.tdwba & ~mask(1), 656 regs.tdwba & mask(1)); 657 break; 658 case REG_RXCSUM: 659 regs.rxcsum = val; 660 break; 661 case REG_RLPML: 662 regs.rlpml = val; 663 break; 664 case REG_RFCTL: 665 regs.rfctl = val; 666 if (regs.rfctl.exsten()) 667 panic("Extended RX descriptors not implemented\n"); 668 break; 669 case REG_MANC: 670 regs.manc = val; 671 break; 672 case REG_SWSM: 673 regs.swsm = val; 674 if (regs.fwsm.eep_fw_semaphore()) 675 regs.swsm.swesmbi(0); 676 break; 677 case REG_SWFWSYNC: 678 regs.sw_fw_sync = val; 679 break; 680 default: 681 if (!IN_RANGE(daddr, REG_VFTA, VLAN_FILTER_TABLE_SIZE*4) && 682 !IN_RANGE(daddr, REG_RAL, RCV_ADDRESS_TABLE_SIZE*8) && 683 !IN_RANGE(daddr, REG_MTA, MULTICAST_TABLE_SIZE*4)) 684 panic("Write request to unknown register number: %#x\n", daddr); 685 }; 686 687 pkt->makeAtomicResponse(); 688 return pioDelay; 689} 690 691void 692IGbE::postInterrupt(IntTypes t, bool now) 693{ 694 assert(t); 695 696 // Interrupt is already pending 697 if (t & regs.icr() && !now) 698 return; 699 700 regs.icr = regs.icr() | t; 701 702 Tick itr_interval = SimClock::Int::ns * 256 * regs.itr.interval(); 703 DPRINTF(EthernetIntr, 704 "EINT: postInterrupt() curTick(): %d itr: %d interval: %d\n", 705 curTick(), regs.itr.interval(), itr_interval); 706 707 if (regs.itr.interval() == 0 || now || 708 lastInterrupt + itr_interval <= curTick()) { 709 if (interEvent.scheduled()) { 710 deschedule(interEvent); 711 } 712 cpuPostInt(); 713 } else { 714 Tick int_time = lastInterrupt + itr_interval; 715 assert(int_time > 0); 716 DPRINTF(EthernetIntr, "EINT: Scheduling timer interrupt for tick %d\n", 717 int_time); 718 if (!interEvent.scheduled()) { 719 schedule(interEvent, int_time); 720 } 721 } 722} 723 724void 725IGbE::delayIntEvent() 726{ 727 cpuPostInt(); 728} 729 730 731void 732IGbE::cpuPostInt() 733{ 734 735 postedInterrupts++; 736 737 if (!(regs.icr() & regs.imr)) { 738 DPRINTF(Ethernet, "Interrupt Masked. Not Posting\n"); 739 return; 740 } 741 742 DPRINTF(Ethernet, "Posting Interrupt\n"); 743 744 745 if (interEvent.scheduled()) { 746 deschedule(interEvent); 747 } 748 749 if (rdtrEvent.scheduled()) { 750 regs.icr.rxt0(1); 751 deschedule(rdtrEvent); 752 } 753 if (radvEvent.scheduled()) { 754 regs.icr.rxt0(1); 755 deschedule(radvEvent); 756 } 757 if (tadvEvent.scheduled()) { 758 regs.icr.txdw(1); 759 deschedule(tadvEvent); 760 } 761 if (tidvEvent.scheduled()) { 762 regs.icr.txdw(1); 763 deschedule(tidvEvent); 764 } 765 766 regs.icr.int_assert(1); 767 DPRINTF(EthernetIntr, "EINT: Posting interrupt to CPU now. Vector %#x\n", 768 regs.icr()); 769 770 intrPost(); 771 772 lastInterrupt = curTick(); 773} 774 775void 776IGbE::cpuClearInt() 777{ 778 if (regs.icr.int_assert()) { 779 regs.icr.int_assert(0); 780 DPRINTF(EthernetIntr, 781 "EINT: Clearing interrupt to CPU now. Vector %#x\n", 782 regs.icr()); 783 intrClear(); 784 } 785} 786 787void 788IGbE::chkInterrupt() 789{ 790 DPRINTF(Ethernet, "Checking interrupts icr: %#x imr: %#x\n", regs.icr(), 791 regs.imr); 792 // Check if we need to clear the cpu interrupt 793 if (!(regs.icr() & regs.imr)) { 794 DPRINTF(Ethernet, "Mask cleaned all interrupts\n"); 795 if (interEvent.scheduled()) 796 deschedule(interEvent); 797 if (regs.icr.int_assert()) 798 cpuClearInt(); 799 } 800 DPRINTF(Ethernet, "ITR = %#X itr.interval = %#X\n", 801 regs.itr(), regs.itr.interval()); 802 803 if (regs.icr() & regs.imr) { 804 if (regs.itr.interval() == 0) { 805 cpuPostInt(); 806 } else { 807 DPRINTF(Ethernet, 808 "Possibly scheduling interrupt because of imr write\n"); 809 if (!interEvent.scheduled()) { 810 Tick t = curTick() + SimClock::Int::ns * 256 * regs.itr.interval(); 811 DPRINTF(Ethernet, "Scheduling for %d\n", t); 812 schedule(interEvent, t); 813 } 814 } 815 } 816} 817 818 819///////////////////////////// IGbE::DescCache ////////////////////////////// 820 821template<class T> 822IGbE::DescCache<T>::DescCache(IGbE *i, const std::string n, int s) 823 : igbe(i), _name(n), cachePnt(0), size(s), curFetching(0), 824 wbOut(0), pktPtr(NULL), wbDelayEvent(this), 825 fetchDelayEvent(this), fetchEvent(this), wbEvent(this) 826{ 827 fetchBuf = new T[size]; 828 wbBuf = new T[size]; 829} 830 831template<class T> 832IGbE::DescCache<T>::~DescCache() 833{ 834 reset(); 835 delete[] fetchBuf; 836 delete[] wbBuf; 837} 838 839template<class T> 840void 841IGbE::DescCache<T>::areaChanged() 842{ 843 if (usedCache.size() > 0 || curFetching || wbOut) 844 panic("Descriptor Address, Length or Head changed. Bad\n"); 845 reset(); 846 847} 848 849template<class T> 850void 851IGbE::DescCache<T>::writeback(Addr aMask) 852{ 853 int curHead = descHead(); 854 int max_to_wb = usedCache.size(); 855 856 // Check if this writeback is less restrictive that the previous 857 // and if so setup another one immediately following it 858 if (wbOut) { 859 if (aMask < wbAlignment) { 860 moreToWb = true; 861 wbAlignment = aMask; 862 } 863 DPRINTF(EthernetDesc, 864 "Writing back already in process, returning\n"); 865 return; 866 } 867 868 moreToWb = false; 869 wbAlignment = aMask; 870 871 872 DPRINTF(EthernetDesc, "Writing back descriptors head: %d tail: " 873 "%d len: %d cachePnt: %d max_to_wb: %d descleft: %d\n", 874 curHead, descTail(), descLen(), cachePnt, max_to_wb, 875 descLeft()); 876 877 if (max_to_wb + curHead >= descLen()) { 878 max_to_wb = descLen() - curHead; 879 moreToWb = true; 880 // this is by definition aligned correctly 881 } else if (wbAlignment != 0) { 882 // align the wb point to the mask 883 max_to_wb = max_to_wb & ~wbAlignment; 884 } 885 886 DPRINTF(EthernetDesc, "Writing back %d descriptors\n", max_to_wb); 887 888 if (max_to_wb <= 0) { 889 if (usedCache.size()) 890 igbe->anBegin(annSmWb, "Wait Alignment", CPA::FL_WAIT); 891 else 892 igbe->anWe(annSmWb, annUsedCacheQ); 893 return; 894 } 895 896 wbOut = max_to_wb; 897 898 assert(!wbDelayEvent.scheduled()); 899 igbe->schedule(wbDelayEvent, curTick() + igbe->wbDelay); 900 igbe->anBegin(annSmWb, "Prepare Writeback Desc"); 901} 902 903template<class T> 904void 905IGbE::DescCache<T>::writeback1() 906{ 907 // If we're draining delay issuing this DMA 908 if (igbe->getDrainState() != Drainable::Running) { 909 igbe->schedule(wbDelayEvent, curTick() + igbe->wbDelay); 910 return; 911 } 912 913 DPRINTF(EthernetDesc, "Begining DMA of %d descriptors\n", wbOut); 914 915 for (int x = 0; x < wbOut; x++) { 916 assert(usedCache.size()); 917 memcpy(&wbBuf[x], usedCache[x], sizeof(T)); 918 igbe->anPq(annSmWb, annUsedCacheQ); 919 igbe->anPq(annSmWb, annDescQ); 920 igbe->anQ(annSmWb, annUsedDescQ); 921 } 922 923 924 igbe->anBegin(annSmWb, "Writeback Desc DMA"); 925 926 assert(wbOut); 927 igbe->dmaWrite(pciToDma(descBase() + descHead() * sizeof(T)), 928 wbOut * sizeof(T), &wbEvent, (uint8_t*)wbBuf, 929 igbe->wbCompDelay); 930} 931 932template<class T> 933void 934IGbE::DescCache<T>::fetchDescriptors() 935{ 936 size_t max_to_fetch; 937 938 if (curFetching) { 939 DPRINTF(EthernetDesc, 940 "Currently fetching %d descriptors, returning\n", 941 curFetching); 942 return; 943 } 944 945 if (descTail() >= cachePnt) 946 max_to_fetch = descTail() - cachePnt; 947 else 948 max_to_fetch = descLen() - cachePnt; 949 950 size_t free_cache = size - usedCache.size() - unusedCache.size(); 951 952 if (!max_to_fetch) 953 igbe->anWe(annSmFetch, annUnusedDescQ); 954 else 955 igbe->anPq(annSmFetch, annUnusedDescQ, max_to_fetch); 956 957 if (max_to_fetch) { 958 if (!free_cache) 959 igbe->anWf(annSmFetch, annDescQ); 960 else 961 igbe->anRq(annSmFetch, annDescQ, free_cache); 962 } 963 964 max_to_fetch = std::min(max_to_fetch, free_cache); 965 966 967 DPRINTF(EthernetDesc, "Fetching descriptors head: %d tail: " 968 "%d len: %d cachePnt: %d max_to_fetch: %d descleft: %d\n", 969 descHead(), descTail(), descLen(), cachePnt, 970 max_to_fetch, descLeft()); 971 972 // Nothing to do 973 if (max_to_fetch == 0) 974 return; 975 976 // So we don't have two descriptor fetches going on at once 977 curFetching = max_to_fetch; 978 979 assert(!fetchDelayEvent.scheduled()); 980 igbe->schedule(fetchDelayEvent, curTick() + igbe->fetchDelay); 981 igbe->anBegin(annSmFetch, "Prepare Fetch Desc"); 982} 983 984template<class T> 985void 986IGbE::DescCache<T>::fetchDescriptors1() 987{ 988 // If we're draining delay issuing this DMA 989 if (igbe->getDrainState() != Drainable::Running) { 990 igbe->schedule(fetchDelayEvent, curTick() + igbe->fetchDelay); 991 return; 992 } 993 994 igbe->anBegin(annSmFetch, "Fetch Desc"); 995 996 DPRINTF(EthernetDesc, "Fetching descriptors at %#x (%#x), size: %#x\n", 997 descBase() + cachePnt * sizeof(T), 998 pciToDma(descBase() + cachePnt * sizeof(T)), 999 curFetching * sizeof(T)); 1000 assert(curFetching); 1001 igbe->dmaRead(pciToDma(descBase() + cachePnt * sizeof(T)), 1002 curFetching * sizeof(T), &fetchEvent, (uint8_t*)fetchBuf, 1003 igbe->fetchCompDelay); 1004} 1005 1006template<class T> 1007void 1008IGbE::DescCache<T>::fetchComplete() 1009{ 1010 T *newDesc; 1011 igbe->anBegin(annSmFetch, "Fetch Complete"); 1012 for (int x = 0; x < curFetching; x++) { 1013 newDesc = new T; 1014 memcpy(newDesc, &fetchBuf[x], sizeof(T)); 1015 unusedCache.push_back(newDesc); 1016 igbe->anDq(annSmFetch, annUnusedDescQ); 1017 igbe->anQ(annSmFetch, annUnusedCacheQ); 1018 igbe->anQ(annSmFetch, annDescQ); 1019 } 1020 1021 1022#ifndef NDEBUG 1023 int oldCp = cachePnt; 1024#endif 1025 1026 cachePnt += curFetching; 1027 assert(cachePnt <= descLen()); 1028 if (cachePnt == descLen()) 1029 cachePnt = 0; 1030 1031 curFetching = 0; 1032 1033 DPRINTF(EthernetDesc, "Fetching complete cachePnt %d -> %d\n", 1034 oldCp, cachePnt); 1035 1036 if ((descTail() >= cachePnt ? (descTail() - cachePnt) : (descLen() - 1037 cachePnt)) == 0) 1038 { 1039 igbe->anWe(annSmFetch, annUnusedDescQ); 1040 } else if (!(size - usedCache.size() - unusedCache.size())) { 1041 igbe->anWf(annSmFetch, annDescQ); 1042 } else { 1043 igbe->anBegin(annSmFetch, "Wait", CPA::FL_WAIT); 1044 } 1045 1046 enableSm(); 1047 igbe->checkDrain(); 1048} 1049 1050template<class T> 1051void 1052IGbE::DescCache<T>::wbComplete() 1053{ 1054 1055 igbe->anBegin(annSmWb, "Finish Writeback"); 1056 1057 long curHead = descHead(); 1058#ifndef NDEBUG 1059 long oldHead = curHead; 1060#endif 1061 1062 for (int x = 0; x < wbOut; x++) { 1063 assert(usedCache.size()); 1064 delete usedCache[0]; 1065 usedCache.pop_front(); 1066 1067 igbe->anDq(annSmWb, annUsedCacheQ); 1068 igbe->anDq(annSmWb, annDescQ); 1069 } 1070 1071 curHead += wbOut; 1072 wbOut = 0; 1073 1074 if (curHead >= descLen()) 1075 curHead -= descLen(); 1076 1077 // Update the head 1078 updateHead(curHead); 1079 1080 DPRINTF(EthernetDesc, "Writeback complete curHead %d -> %d\n", 1081 oldHead, curHead); 1082 1083 // If we still have more to wb, call wb now 1084 actionAfterWb(); 1085 if (moreToWb) { 1086 moreToWb = false; 1087 DPRINTF(EthernetDesc, "Writeback has more todo\n"); 1088 writeback(wbAlignment); 1089 } 1090 1091 if (!wbOut) { 1092 igbe->checkDrain(); 1093 if (usedCache.size()) 1094 igbe->anBegin(annSmWb, "Wait", CPA::FL_WAIT); 1095 else 1096 igbe->anWe(annSmWb, annUsedCacheQ); 1097 } 1098 fetchAfterWb(); 1099} 1100 1101template<class T> 1102void 1103IGbE::DescCache<T>::reset() 1104{ 1105 DPRINTF(EthernetDesc, "Reseting descriptor cache\n"); 1106 for (typename CacheType::size_type x = 0; x < usedCache.size(); x++) 1107 delete usedCache[x]; 1108 for (typename CacheType::size_type x = 0; x < unusedCache.size(); x++) 1109 delete unusedCache[x]; 1110 1111 usedCache.clear(); 1112 unusedCache.clear(); 1113 1114 cachePnt = 0; 1115 1116} 1117 1118template<class T> 1119void 1120IGbE::DescCache<T>::serialize(std::ostream &os) 1121{ 1122 SERIALIZE_SCALAR(cachePnt); 1123 SERIALIZE_SCALAR(curFetching); 1124 SERIALIZE_SCALAR(wbOut); 1125 SERIALIZE_SCALAR(moreToWb); 1126 SERIALIZE_SCALAR(wbAlignment); 1127 1128 typename CacheType::size_type usedCacheSize = usedCache.size(); 1129 SERIALIZE_SCALAR(usedCacheSize); 1130 for (typename CacheType::size_type x = 0; x < usedCacheSize; x++) { 1131 arrayParamOut(os, csprintf("usedCache_%d", x), 1132 (uint8_t*)usedCache[x],sizeof(T)); 1133 } 1134 1135 typename CacheType::size_type unusedCacheSize = unusedCache.size(); 1136 SERIALIZE_SCALAR(unusedCacheSize); 1137 for (typename CacheType::size_type x = 0; x < unusedCacheSize; x++) { 1138 arrayParamOut(os, csprintf("unusedCache_%d", x), 1139 (uint8_t*)unusedCache[x],sizeof(T)); 1140 } 1141 1142 Tick fetch_delay = 0, wb_delay = 0; 1143 if (fetchDelayEvent.scheduled()) 1144 fetch_delay = fetchDelayEvent.when(); 1145 SERIALIZE_SCALAR(fetch_delay); 1146 if (wbDelayEvent.scheduled()) 1147 wb_delay = wbDelayEvent.when(); 1148 SERIALIZE_SCALAR(wb_delay); 1149 1150 1151} 1152 1153template<class T> 1154void 1155IGbE::DescCache<T>::unserialize(Checkpoint *cp, const std::string §ion) 1156{ 1157 UNSERIALIZE_SCALAR(cachePnt); 1158 UNSERIALIZE_SCALAR(curFetching); 1159 UNSERIALIZE_SCALAR(wbOut); 1160 UNSERIALIZE_SCALAR(moreToWb); 1161 UNSERIALIZE_SCALAR(wbAlignment); 1162 1163 typename CacheType::size_type usedCacheSize; 1164 UNSERIALIZE_SCALAR(usedCacheSize); 1165 T *temp; 1166 for (typename CacheType::size_type x = 0; x < usedCacheSize; x++) { 1167 temp = new T; 1168 arrayParamIn(cp, section, csprintf("usedCache_%d", x), 1169 (uint8_t*)temp,sizeof(T)); 1170 usedCache.push_back(temp); 1171 } 1172 1173 typename CacheType::size_type unusedCacheSize; 1174 UNSERIALIZE_SCALAR(unusedCacheSize); 1175 for (typename CacheType::size_type x = 0; x < unusedCacheSize; x++) { 1176 temp = new T; 1177 arrayParamIn(cp, section, csprintf("unusedCache_%d", x), 1178 (uint8_t*)temp,sizeof(T)); 1179 unusedCache.push_back(temp); 1180 } 1181 Tick fetch_delay = 0, wb_delay = 0; 1182 UNSERIALIZE_SCALAR(fetch_delay); 1183 UNSERIALIZE_SCALAR(wb_delay); 1184 if (fetch_delay) 1185 igbe->schedule(fetchDelayEvent, fetch_delay); 1186 if (wb_delay) 1187 igbe->schedule(wbDelayEvent, wb_delay); 1188 1189 1190} 1191 1192///////////////////////////// IGbE::RxDescCache ////////////////////////////// 1193 1194IGbE::RxDescCache::RxDescCache(IGbE *i, const std::string n, int s) 1195 : DescCache<RxDesc>(i, n, s), pktDone(false), splitCount(0), 1196 pktEvent(this), pktHdrEvent(this), pktDataEvent(this) 1197 1198{ 1199 annSmFetch = "RX Desc Fetch"; 1200 annSmWb = "RX Desc Writeback"; 1201 annUnusedDescQ = "RX Unused Descriptors"; 1202 annUnusedCacheQ = "RX Unused Descriptor Cache"; 1203 annUsedCacheQ = "RX Used Descriptor Cache"; 1204 annUsedDescQ = "RX Used Descriptors"; 1205 annDescQ = "RX Descriptors"; 1206} 1207 1208void 1209IGbE::RxDescCache::pktSplitDone() 1210{ 1211 splitCount++; 1212 DPRINTF(EthernetDesc, 1213 "Part of split packet done: splitcount now %d\n", splitCount); 1214 assert(splitCount <= 2); 1215 if (splitCount != 2) 1216 return; 1217 splitCount = 0; 1218 DPRINTF(EthernetDesc, 1219 "Part of split packet done: calling pktComplete()\n"); 1220 pktComplete(); 1221} 1222 1223int 1224IGbE::RxDescCache::writePacket(EthPacketPtr packet, int pkt_offset) 1225{ 1226 assert(unusedCache.size()); 1227 //if (!unusedCache.size()) 1228 // return false; 1229 1230 pktPtr = packet; 1231 pktDone = false; 1232 unsigned buf_len, hdr_len; 1233 1234 RxDesc *desc = unusedCache.front(); 1235 switch (igbe->regs.srrctl.desctype()) { 1236 case RXDT_LEGACY: 1237 assert(pkt_offset == 0); 1238 bytesCopied = packet->length; 1239 DPRINTF(EthernetDesc, "Packet Length: %d Desc Size: %d\n", 1240 packet->length, igbe->regs.rctl.descSize()); 1241 assert(packet->length < igbe->regs.rctl.descSize()); 1242 igbe->dmaWrite(pciToDma(desc->legacy.buf), 1243 packet->length, &pktEvent, packet->data, 1244 igbe->rxWriteDelay); 1245 break; 1246 case RXDT_ADV_ONEBUF: 1247 assert(pkt_offset == 0); 1248 bytesCopied = packet->length; 1249 buf_len = igbe->regs.rctl.lpe() ? igbe->regs.srrctl.bufLen() : 1250 igbe->regs.rctl.descSize(); 1251 DPRINTF(EthernetDesc, "Packet Length: %d srrctl: %#x Desc Size: %d\n", 1252 packet->length, igbe->regs.srrctl(), buf_len); 1253 assert(packet->length < buf_len); 1254 igbe->dmaWrite(pciToDma(desc->adv_read.pkt), 1255 packet->length, &pktEvent, packet->data, 1256 igbe->rxWriteDelay); 1257 desc->adv_wb.header_len = htole(0); 1258 desc->adv_wb.sph = htole(0); 1259 desc->adv_wb.pkt_len = htole((uint16_t)(pktPtr->length)); 1260 break; 1261 case RXDT_ADV_SPLIT_A: 1262 int split_point; 1263 1264 buf_len = igbe->regs.rctl.lpe() ? igbe->regs.srrctl.bufLen() : 1265 igbe->regs.rctl.descSize(); 1266 hdr_len = igbe->regs.rctl.lpe() ? igbe->regs.srrctl.hdrLen() : 0; 1267 DPRINTF(EthernetDesc, 1268 "lpe: %d Packet Length: %d offset: %d srrctl: %#x " 1269 "hdr addr: %#x Hdr Size: %d desc addr: %#x Desc Size: %d\n", 1270 igbe->regs.rctl.lpe(), packet->length, pkt_offset, 1271 igbe->regs.srrctl(), desc->adv_read.hdr, hdr_len, 1272 desc->adv_read.pkt, buf_len); 1273 1274 split_point = hsplit(pktPtr); 1275 1276 if (packet->length <= hdr_len) { 1277 bytesCopied = packet->length; 1278 assert(pkt_offset == 0); 1279 DPRINTF(EthernetDesc, "Hdr split: Entire packet in header\n"); 1280 igbe->dmaWrite(pciToDma(desc->adv_read.hdr), 1281 packet->length, &pktEvent, packet->data, 1282 igbe->rxWriteDelay); 1283 desc->adv_wb.header_len = htole((uint16_t)packet->length); 1284 desc->adv_wb.sph = htole(0); 1285 desc->adv_wb.pkt_len = htole(0); 1286 } else if (split_point) { 1287 if (pkt_offset) { 1288 // we are only copying some data, header/data has already been 1289 // copied 1290 int max_to_copy = 1291 std::min(packet->length - pkt_offset, buf_len); 1292 bytesCopied += max_to_copy; 1293 DPRINTF(EthernetDesc, 1294 "Hdr split: Continuing data buffer copy\n"); 1295 igbe->dmaWrite(pciToDma(desc->adv_read.pkt), 1296 max_to_copy, &pktEvent, 1297 packet->data + pkt_offset, igbe->rxWriteDelay); 1298 desc->adv_wb.header_len = htole(0); 1299 desc->adv_wb.pkt_len = htole((uint16_t)max_to_copy); 1300 desc->adv_wb.sph = htole(0); 1301 } else { 1302 int max_to_copy = 1303 std::min(packet->length - split_point, buf_len); 1304 bytesCopied += max_to_copy + split_point; 1305 1306 DPRINTF(EthernetDesc, "Hdr split: splitting at %d\n", 1307 split_point); 1308 igbe->dmaWrite(pciToDma(desc->adv_read.hdr), 1309 split_point, &pktHdrEvent, 1310 packet->data, igbe->rxWriteDelay); 1311 igbe->dmaWrite(pciToDma(desc->adv_read.pkt), 1312 max_to_copy, &pktDataEvent, 1313 packet->data + split_point, igbe->rxWriteDelay); 1314 desc->adv_wb.header_len = htole(split_point); 1315 desc->adv_wb.sph = 1; 1316 desc->adv_wb.pkt_len = htole((uint16_t)(max_to_copy)); 1317 } 1318 } else { 1319 panic("Header split not fitting within header buffer or " 1320 "undecodable packet not fitting in header unsupported\n"); 1321 } 1322 break; 1323 default: 1324 panic("Unimplemnted RX receive buffer type: %d\n", 1325 igbe->regs.srrctl.desctype()); 1326 } 1327 return bytesCopied; 1328 1329} 1330 1331void 1332IGbE::RxDescCache::pktComplete() 1333{ 1334 assert(unusedCache.size()); 1335 RxDesc *desc; 1336 desc = unusedCache.front(); 1337 1338 igbe->anBegin("RXS", "Update Desc"); 1339 1340 uint16_t crcfixup = igbe->regs.rctl.secrc() ? 0 : 4 ; 1341 DPRINTF(EthernetDesc, "pktPtr->length: %d bytesCopied: %d " 1342 "stripcrc offset: %d value written: %d %d\n", 1343 pktPtr->length, bytesCopied, crcfixup, 1344 htole((uint16_t)(pktPtr->length + crcfixup)), 1345 (uint16_t)(pktPtr->length + crcfixup)); 1346 1347 // no support for anything but starting at 0 1348 assert(igbe->regs.rxcsum.pcss() == 0); 1349 1350 DPRINTF(EthernetDesc, "Packet written to memory updating Descriptor\n"); 1351 1352 uint16_t status = RXDS_DD; 1353 uint8_t err = 0; 1354 uint16_t ext_err = 0; 1355 uint16_t csum = 0; 1356 uint16_t ptype = 0; 1357 uint16_t ip_id = 0; 1358 1359 assert(bytesCopied <= pktPtr->length); 1360 if (bytesCopied == pktPtr->length) 1361 status |= RXDS_EOP; 1362 1363 IpPtr ip(pktPtr); 1364 1365 if (ip) { 1366 DPRINTF(EthernetDesc, "Proccesing Ip packet with Id=%d\n", ip->id()); 1367 ptype |= RXDP_IPV4; 1368 ip_id = ip->id(); 1369 1370 if (igbe->regs.rxcsum.ipofld()) { 1371 DPRINTF(EthernetDesc, "Checking IP checksum\n"); 1372 status |= RXDS_IPCS; 1373 csum = htole(cksum(ip)); 1374 igbe->rxIpChecksums++; 1375 if (cksum(ip) != 0) { 1376 err |= RXDE_IPE; 1377 ext_err |= RXDEE_IPE; 1378 DPRINTF(EthernetDesc, "Checksum is bad!!\n"); 1379 } 1380 } 1381 TcpPtr tcp(ip); 1382 if (tcp && igbe->regs.rxcsum.tuofld()) { 1383 DPRINTF(EthernetDesc, "Checking TCP checksum\n"); 1384 status |= RXDS_TCPCS; 1385 ptype |= RXDP_TCP; 1386 csum = htole(cksum(tcp)); 1387 igbe->rxTcpChecksums++; 1388 if (cksum(tcp) != 0) { 1389 DPRINTF(EthernetDesc, "Checksum is bad!!\n"); 1390 err |= RXDE_TCPE; 1391 ext_err |= RXDEE_TCPE; 1392 } 1393 } 1394 1395 UdpPtr udp(ip); 1396 if (udp && igbe->regs.rxcsum.tuofld()) { 1397 DPRINTF(EthernetDesc, "Checking UDP checksum\n"); 1398 status |= RXDS_UDPCS; 1399 ptype |= RXDP_UDP; 1400 csum = htole(cksum(udp)); 1401 igbe->rxUdpChecksums++; 1402 if (cksum(udp) != 0) { 1403 DPRINTF(EthernetDesc, "Checksum is bad!!\n"); 1404 ext_err |= RXDEE_TCPE; 1405 err |= RXDE_TCPE; 1406 } 1407 } 1408 } else { // if ip 1409 DPRINTF(EthernetSM, "Proccesing Non-Ip packet\n"); 1410 } 1411 1412 switch (igbe->regs.srrctl.desctype()) { 1413 case RXDT_LEGACY: 1414 desc->legacy.len = htole((uint16_t)(pktPtr->length + crcfixup)); 1415 desc->legacy.status = htole(status); 1416 desc->legacy.errors = htole(err); 1417 // No vlan support at this point... just set it to 0 1418 desc->legacy.vlan = 0; 1419 break; 1420 case RXDT_ADV_SPLIT_A: 1421 case RXDT_ADV_ONEBUF: 1422 desc->adv_wb.rss_type = htole(0); 1423 desc->adv_wb.pkt_type = htole(ptype); 1424 if (igbe->regs.rxcsum.pcsd()) { 1425 // no rss support right now 1426 desc->adv_wb.rss_hash = htole(0); 1427 } else { 1428 desc->adv_wb.id = htole(ip_id); 1429 desc->adv_wb.csum = htole(csum); 1430 } 1431 desc->adv_wb.status = htole(status); 1432 desc->adv_wb.errors = htole(ext_err); 1433 // no vlan support 1434 desc->adv_wb.vlan_tag = htole(0); 1435 break; 1436 default: 1437 panic("Unimplemnted RX receive buffer type %d\n", 1438 igbe->regs.srrctl.desctype()); 1439 } 1440 1441 DPRINTF(EthernetDesc, "Descriptor complete w0: %#x w1: %#x\n", 1442 desc->adv_read.pkt, desc->adv_read.hdr); 1443 1444 if (bytesCopied == pktPtr->length) { 1445 DPRINTF(EthernetDesc, 1446 "Packet completely written to descriptor buffers\n"); 1447 // Deal with the rx timer interrupts 1448 if (igbe->regs.rdtr.delay()) { 1449 Tick delay = igbe->regs.rdtr.delay() * igbe->intClock(); 1450 DPRINTF(EthernetSM, "RXS: Scheduling DTR for %d\n", delay); 1451 igbe->reschedule(igbe->rdtrEvent, curTick() + delay); 1452 } 1453 1454 if (igbe->regs.radv.idv()) { 1455 Tick delay = igbe->regs.radv.idv() * igbe->intClock(); 1456 DPRINTF(EthernetSM, "RXS: Scheduling ADV for %d\n", delay); 1457 if (!igbe->radvEvent.scheduled()) { 1458 igbe->schedule(igbe->radvEvent, curTick() + delay); 1459 } 1460 } 1461 1462 // if neither radv or rdtr, maybe itr is set... 1463 if (!igbe->regs.rdtr.delay() && !igbe->regs.radv.idv()) { 1464 DPRINTF(EthernetSM, 1465 "RXS: Receive interrupt delay disabled, posting IT_RXT\n"); 1466 igbe->postInterrupt(IT_RXT); 1467 } 1468 1469 // If the packet is small enough, interrupt appropriately 1470 // I wonder if this is delayed or not?! 1471 if (pktPtr->length <= igbe->regs.rsrpd.idv()) { 1472 DPRINTF(EthernetSM, 1473 "RXS: Posting IT_SRPD beacuse small packet received\n"); 1474 igbe->postInterrupt(IT_SRPD); 1475 } 1476 bytesCopied = 0; 1477 } 1478 1479 pktPtr = NULL; 1480 igbe->checkDrain(); 1481 enableSm(); 1482 pktDone = true; 1483 1484 igbe->anBegin("RXS", "Done Updating Desc"); 1485 DPRINTF(EthernetDesc, "Processing of this descriptor complete\n"); 1486 igbe->anDq("RXS", annUnusedCacheQ); 1487 unusedCache.pop_front(); 1488 igbe->anQ("RXS", annUsedCacheQ); 1489 usedCache.push_back(desc); 1490} 1491 1492void 1493IGbE::RxDescCache::enableSm() 1494{ 1495 if (!igbe->drainManager) { 1496 igbe->rxTick = true; 1497 igbe->restartClock(); 1498 } 1499} 1500 1501bool 1502IGbE::RxDescCache::packetDone() 1503{ 1504 if (pktDone) { 1505 pktDone = false; 1506 return true; 1507 } 1508 return false; 1509} 1510 1511bool 1512IGbE::RxDescCache::hasOutstandingEvents() 1513{ 1514 return pktEvent.scheduled() || wbEvent.scheduled() || 1515 fetchEvent.scheduled() || pktHdrEvent.scheduled() || 1516 pktDataEvent.scheduled(); 1517 1518} 1519 1520void 1521IGbE::RxDescCache::serialize(std::ostream &os) 1522{ 1523 DescCache<RxDesc>::serialize(os); 1524 SERIALIZE_SCALAR(pktDone); 1525 SERIALIZE_SCALAR(splitCount); 1526 SERIALIZE_SCALAR(bytesCopied); 1527} 1528 1529void 1530IGbE::RxDescCache::unserialize(Checkpoint *cp, const std::string §ion) 1531{ 1532 DescCache<RxDesc>::unserialize(cp, section); 1533 UNSERIALIZE_SCALAR(pktDone); 1534 UNSERIALIZE_SCALAR(splitCount); 1535 UNSERIALIZE_SCALAR(bytesCopied); 1536} 1537 1538 1539///////////////////////////// IGbE::TxDescCache ////////////////////////////// 1540 1541IGbE::TxDescCache::TxDescCache(IGbE *i, const std::string n, int s) 1542 : DescCache<TxDesc>(i,n, s), pktDone(false), isTcp(false), 1543 pktWaiting(false), completionAddress(0), completionEnabled(false), 1544 useTso(false), tsoHeaderLen(0), tsoMss(0), tsoTotalLen(0), tsoUsedLen(0), 1545 tsoPrevSeq(0), tsoPktPayloadBytes(0), tsoLoadedHeader(false), 1546 tsoPktHasHeader(false), tsoDescBytesUsed(0), tsoCopyBytes(0), tsoPkts(0), 1547 pktEvent(this), headerEvent(this), nullEvent(this) 1548{ 1549 annSmFetch = "TX Desc Fetch"; 1550 annSmWb = "TX Desc Writeback"; 1551 annUnusedDescQ = "TX Unused Descriptors"; 1552 annUnusedCacheQ = "TX Unused Descriptor Cache"; 1553 annUsedCacheQ = "TX Used Descriptor Cache"; 1554 annUsedDescQ = "TX Used Descriptors"; 1555 annDescQ = "TX Descriptors"; 1556} 1557 1558void 1559IGbE::TxDescCache::processContextDesc() 1560{ 1561 assert(unusedCache.size()); 1562 TxDesc *desc; 1563 1564 DPRINTF(EthernetDesc, "Checking and processing context descriptors\n"); 1565 1566 while (!useTso && unusedCache.size() && 1567 TxdOp::isContext(unusedCache.front())) { 1568 DPRINTF(EthernetDesc, "Got context descriptor type...\n"); 1569 1570 desc = unusedCache.front(); 1571 DPRINTF(EthernetDesc, "Descriptor upper: %#x lower: %#X\n", 1572 desc->d1, desc->d2); 1573 1574 1575 // is this going to be a tcp or udp packet? 1576 isTcp = TxdOp::tcp(desc) ? true : false; 1577 1578 // setup all the TSO variables, they'll be ignored if we don't use 1579 // tso for this connection 1580 tsoHeaderLen = TxdOp::hdrlen(desc); 1581 tsoMss = TxdOp::mss(desc); 1582 1583 if (TxdOp::isType(desc, TxdOp::TXD_CNXT) && TxdOp::tse(desc)) { 1584 DPRINTF(EthernetDesc, "TCP offload enabled for packet hdrlen: " 1585 "%d mss: %d paylen %d\n", TxdOp::hdrlen(desc), 1586 TxdOp::mss(desc), TxdOp::getLen(desc)); 1587 useTso = true; 1588 tsoTotalLen = TxdOp::getLen(desc); 1589 tsoLoadedHeader = false; 1590 tsoDescBytesUsed = 0; 1591 tsoUsedLen = 0; 1592 tsoPrevSeq = 0; 1593 tsoPktHasHeader = false; 1594 tsoPkts = 0; 1595 tsoCopyBytes = 0; 1596 } 1597 1598 TxdOp::setDd(desc); 1599 unusedCache.pop_front(); 1600 igbe->anDq("TXS", annUnusedCacheQ); 1601 usedCache.push_back(desc); 1602 igbe->anQ("TXS", annUsedCacheQ); 1603 } 1604 1605 if (!unusedCache.size()) 1606 return; 1607 1608 desc = unusedCache.front(); 1609 if (!useTso && TxdOp::isType(desc, TxdOp::TXD_ADVDATA) && 1610 TxdOp::tse(desc)) { 1611 DPRINTF(EthernetDesc, "TCP offload(adv) enabled for packet " 1612 "hdrlen: %d mss: %d paylen %d\n", 1613 tsoHeaderLen, tsoMss, TxdOp::getTsoLen(desc)); 1614 useTso = true; 1615 tsoTotalLen = TxdOp::getTsoLen(desc); 1616 tsoLoadedHeader = false; 1617 tsoDescBytesUsed = 0; 1618 tsoUsedLen = 0; 1619 tsoPrevSeq = 0; 1620 tsoPktHasHeader = false; 1621 tsoPkts = 0; 1622 } 1623 1624 if (useTso && !tsoLoadedHeader) { 1625 // we need to fetch a header 1626 DPRINTF(EthernetDesc, "Starting DMA of TSO header\n"); 1627 assert(TxdOp::isData(desc) && TxdOp::getLen(desc) >= tsoHeaderLen); 1628 pktWaiting = true; 1629 assert(tsoHeaderLen <= 256); 1630 igbe->dmaRead(pciToDma(TxdOp::getBuf(desc)), 1631 tsoHeaderLen, &headerEvent, tsoHeader, 0); 1632 } 1633} 1634 1635void 1636IGbE::TxDescCache::headerComplete() 1637{ 1638 DPRINTF(EthernetDesc, "TSO: Fetching TSO header complete\n"); 1639 pktWaiting = false; 1640 1641 assert(unusedCache.size()); 1642 TxDesc *desc = unusedCache.front(); 1643 DPRINTF(EthernetDesc, "TSO: len: %d tsoHeaderLen: %d\n", 1644 TxdOp::getLen(desc), tsoHeaderLen); 1645 1646 if (TxdOp::getLen(desc) == tsoHeaderLen) { 1647 tsoDescBytesUsed = 0; 1648 tsoLoadedHeader = true; 1649 unusedCache.pop_front(); 1650 usedCache.push_back(desc); 1651 } else { 1652 DPRINTF(EthernetDesc, "TSO: header part of larger payload\n"); 1653 tsoDescBytesUsed = tsoHeaderLen; 1654 tsoLoadedHeader = true; 1655 } 1656 enableSm(); 1657 igbe->checkDrain(); 1658} 1659 1660unsigned 1661IGbE::TxDescCache::getPacketSize(EthPacketPtr p) 1662{ 1663 if (!unusedCache.size()) 1664 return 0; 1665 1666 DPRINTF(EthernetDesc, "Starting processing of descriptor\n"); 1667 1668 assert(!useTso || tsoLoadedHeader); 1669 TxDesc *desc = unusedCache.front(); 1670 1671 if (useTso) { 1672 DPRINTF(EthernetDesc, "getPacket(): TxDescriptor data " 1673 "d1: %#llx d2: %#llx\n", desc->d1, desc->d2); 1674 DPRINTF(EthernetDesc, "TSO: use: %d hdrlen: %d mss: %d total: %d " 1675 "used: %d loaded hdr: %d\n", useTso, tsoHeaderLen, tsoMss, 1676 tsoTotalLen, tsoUsedLen, tsoLoadedHeader); 1677 1678 if (tsoPktHasHeader) 1679 tsoCopyBytes = std::min((tsoMss + tsoHeaderLen) - p->length, 1680 TxdOp::getLen(desc) - tsoDescBytesUsed); 1681 else 1682 tsoCopyBytes = std::min(tsoMss, 1683 TxdOp::getLen(desc) - tsoDescBytesUsed); 1684 unsigned pkt_size = 1685 tsoCopyBytes + (tsoPktHasHeader ? 0 : tsoHeaderLen); 1686 1687 DPRINTF(EthernetDesc, "TSO: descBytesUsed: %d copyBytes: %d " 1688 "this descLen: %d\n", 1689 tsoDescBytesUsed, tsoCopyBytes, TxdOp::getLen(desc)); 1690 DPRINTF(EthernetDesc, "TSO: pktHasHeader: %d\n", tsoPktHasHeader); 1691 DPRINTF(EthernetDesc, "TSO: Next packet is %d bytes\n", pkt_size); 1692 return pkt_size; 1693 } 1694 1695 DPRINTF(EthernetDesc, "Next TX packet is %d bytes\n", 1696 TxdOp::getLen(unusedCache.front())); 1697 return TxdOp::getLen(desc); 1698} 1699 1700void 1701IGbE::TxDescCache::getPacketData(EthPacketPtr p) 1702{ 1703 assert(unusedCache.size()); 1704 1705 TxDesc *desc; 1706 desc = unusedCache.front(); 1707 1708 DPRINTF(EthernetDesc, "getPacketData(): TxDescriptor data " 1709 "d1: %#llx d2: %#llx\n", desc->d1, desc->d2); 1710 assert((TxdOp::isLegacy(desc) || TxdOp::isData(desc)) && 1711 TxdOp::getLen(desc)); 1712 1713 pktPtr = p; 1714 1715 pktWaiting = true; 1716 1717 DPRINTF(EthernetDesc, "Starting DMA of packet at offset %d\n", p->length); 1718 1719 if (useTso) { 1720 assert(tsoLoadedHeader); 1721 if (!tsoPktHasHeader) { 1722 DPRINTF(EthernetDesc, 1723 "Loading TSO header (%d bytes) into start of packet\n", 1724 tsoHeaderLen); 1725 memcpy(p->data, &tsoHeader,tsoHeaderLen); 1726 p->length +=tsoHeaderLen; 1727 tsoPktHasHeader = true; 1728 } 1729 } 1730 1731 if (useTso) { 1732 DPRINTF(EthernetDesc, 1733 "Starting DMA of packet at offset %d length: %d\n", 1734 p->length, tsoCopyBytes); 1735 igbe->dmaRead(pciToDma(TxdOp::getBuf(desc)) 1736 + tsoDescBytesUsed, 1737 tsoCopyBytes, &pktEvent, p->data + p->length, 1738 igbe->txReadDelay); 1739 tsoDescBytesUsed += tsoCopyBytes; 1740 assert(tsoDescBytesUsed <= TxdOp::getLen(desc)); 1741 } else { 1742 igbe->dmaRead(pciToDma(TxdOp::getBuf(desc)), 1743 TxdOp::getLen(desc), &pktEvent, p->data + p->length, 1744 igbe->txReadDelay); 1745 } 1746} 1747 1748void 1749IGbE::TxDescCache::pktComplete() 1750{ 1751 1752 TxDesc *desc; 1753 assert(unusedCache.size()); 1754 assert(pktPtr); 1755 1756 igbe->anBegin("TXS", "Update Desc"); 1757 1758 DPRINTF(EthernetDesc, "DMA of packet complete\n"); 1759 1760 1761 desc = unusedCache.front(); 1762 assert((TxdOp::isLegacy(desc) || TxdOp::isData(desc)) && 1763 TxdOp::getLen(desc)); 1764 1765 DPRINTF(EthernetDesc, "TxDescriptor data d1: %#llx d2: %#llx\n", 1766 desc->d1, desc->d2); 1767 1768 // Set the length of the data in the EtherPacket 1769 if (useTso) { 1770 DPRINTF(EthernetDesc, "TSO: use: %d hdrlen: %d mss: %d total: %d " 1771 "used: %d loaded hdr: %d\n", useTso, tsoHeaderLen, tsoMss, 1772 tsoTotalLen, tsoUsedLen, tsoLoadedHeader); 1773 pktPtr->length += tsoCopyBytes; 1774 tsoUsedLen += tsoCopyBytes; 1775 DPRINTF(EthernetDesc, "TSO: descBytesUsed: %d copyBytes: %d\n", 1776 tsoDescBytesUsed, tsoCopyBytes); 1777 } else 1778 pktPtr->length += TxdOp::getLen(desc); 1779 1780 1781 1782 if ((!TxdOp::eop(desc) && !useTso) || 1783 (pktPtr->length < ( tsoMss + tsoHeaderLen) && 1784 tsoTotalLen != tsoUsedLen && useTso)) { 1785 assert(!useTso || (tsoDescBytesUsed == TxdOp::getLen(desc))); 1786 igbe->anDq("TXS", annUnusedCacheQ); 1787 unusedCache.pop_front(); 1788 igbe->anQ("TXS", annUsedCacheQ); 1789 usedCache.push_back(desc); 1790 1791 tsoDescBytesUsed = 0; 1792 pktDone = true; 1793 pktWaiting = false; 1794 pktMultiDesc = true; 1795 1796 DPRINTF(EthernetDesc, "Partial Packet Descriptor of %d bytes Done\n", 1797 pktPtr->length); 1798 pktPtr = NULL; 1799 1800 enableSm(); 1801 igbe->checkDrain(); 1802 return; 1803 } 1804 1805 1806 pktMultiDesc = false; 1807 // no support for vlans 1808 assert(!TxdOp::vle(desc)); 1809 1810 // we only support single packet descriptors at this point 1811 if (!useTso) 1812 assert(TxdOp::eop(desc)); 1813 1814 // set that this packet is done 1815 if (TxdOp::rs(desc)) 1816 TxdOp::setDd(desc); 1817 1818 DPRINTF(EthernetDesc, "TxDescriptor data d1: %#llx d2: %#llx\n", 1819 desc->d1, desc->d2); 1820 1821 if (useTso) { 1822 IpPtr ip(pktPtr); 1823 if (ip) { 1824 DPRINTF(EthernetDesc, "TSO: Modifying IP header. Id + %d\n", 1825 tsoPkts); 1826 ip->id(ip->id() + tsoPkts++); 1827 ip->len(pktPtr->length - EthPtr(pktPtr)->size()); 1828 1829 TcpPtr tcp(ip); 1830 if (tcp) { 1831 DPRINTF(EthernetDesc, 1832 "TSO: Modifying TCP header. old seq %d + %d\n", 1833 tcp->seq(), tsoPrevSeq); 1834 tcp->seq(tcp->seq() + tsoPrevSeq); 1835 if (tsoUsedLen != tsoTotalLen) 1836 tcp->flags(tcp->flags() & ~9); // clear fin & psh 1837 } 1838 UdpPtr udp(ip); 1839 if (udp) { 1840 DPRINTF(EthernetDesc, "TSO: Modifying UDP header.\n"); 1841 udp->len(pktPtr->length - EthPtr(pktPtr)->size()); 1842 } 1843 } 1844 tsoPrevSeq = tsoUsedLen; 1845 } 1846 1847 if (DTRACE(EthernetDesc)) { 1848 IpPtr ip(pktPtr); 1849 if (ip) 1850 DPRINTF(EthernetDesc, "Proccesing Ip packet with Id=%d\n", 1851 ip->id()); 1852 else 1853 DPRINTF(EthernetSM, "Proccesing Non-Ip packet\n"); 1854 } 1855 1856 // Checksums are only ofloaded for new descriptor types 1857 if (TxdOp::isData(desc) && ( TxdOp::ixsm(desc) || TxdOp::txsm(desc)) ) { 1858 DPRINTF(EthernetDesc, "Calculating checksums for packet\n"); 1859 IpPtr ip(pktPtr); 1860 assert(ip); 1861 if (TxdOp::ixsm(desc)) { 1862 ip->sum(0); 1863 ip->sum(cksum(ip)); 1864 igbe->txIpChecksums++; 1865 DPRINTF(EthernetDesc, "Calculated IP checksum\n"); 1866 } 1867 if (TxdOp::txsm(desc)) { 1868 TcpPtr tcp(ip); 1869 UdpPtr udp(ip); 1870 if (tcp) { 1871 tcp->sum(0); 1872 tcp->sum(cksum(tcp)); 1873 igbe->txTcpChecksums++; 1874 DPRINTF(EthernetDesc, "Calculated TCP checksum\n"); 1875 } else if (udp) { 1876 assert(udp); 1877 udp->sum(0); 1878 udp->sum(cksum(udp)); 1879 igbe->txUdpChecksums++; 1880 DPRINTF(EthernetDesc, "Calculated UDP checksum\n"); 1881 } else { 1882 panic("Told to checksum, but don't know how\n"); 1883 } 1884 } 1885 } 1886 1887 if (TxdOp::ide(desc)) { 1888 // Deal with the rx timer interrupts 1889 DPRINTF(EthernetDesc, "Descriptor had IDE set\n"); 1890 if (igbe->regs.tidv.idv()) { 1891 Tick delay = igbe->regs.tidv.idv() * igbe->intClock(); 1892 DPRINTF(EthernetDesc, "setting tidv\n"); 1893 igbe->reschedule(igbe->tidvEvent, curTick() + delay, true); 1894 } 1895 1896 if (igbe->regs.tadv.idv() && igbe->regs.tidv.idv()) { 1897 Tick delay = igbe->regs.tadv.idv() * igbe->intClock(); 1898 DPRINTF(EthernetDesc, "setting tadv\n"); 1899 if (!igbe->tadvEvent.scheduled()) { 1900 igbe->schedule(igbe->tadvEvent, curTick() + delay); 1901 } 1902 } 1903 } 1904 1905 1906 if (!useTso || TxdOp::getLen(desc) == tsoDescBytesUsed) { 1907 DPRINTF(EthernetDesc, "Descriptor Done\n"); 1908 igbe->anDq("TXS", annUnusedCacheQ); 1909 unusedCache.pop_front(); 1910 igbe->anQ("TXS", annUsedCacheQ); 1911 usedCache.push_back(desc); 1912 tsoDescBytesUsed = 0; 1913 } 1914 1915 if (useTso && tsoUsedLen == tsoTotalLen) 1916 useTso = false; 1917 1918 1919 DPRINTF(EthernetDesc, 1920 "------Packet of %d bytes ready for transmission-------\n", 1921 pktPtr->length); 1922 pktDone = true; 1923 pktWaiting = false; 1924 pktPtr = NULL; 1925 tsoPktHasHeader = false; 1926 1927 if (igbe->regs.txdctl.wthresh() == 0) { 1928 igbe->anBegin("TXS", "Desc Writeback"); 1929 DPRINTF(EthernetDesc, "WTHRESH == 0, writing back descriptor\n"); 1930 writeback(0); 1931 } else if (!igbe->regs.txdctl.gran() && igbe->regs.txdctl.wthresh() <= 1932 descInBlock(usedCache.size())) { 1933 DPRINTF(EthernetDesc, "used > WTHRESH, writing back descriptor\n"); 1934 igbe->anBegin("TXS", "Desc Writeback"); 1935 writeback((igbe->cacheBlockSize()-1)>>4); 1936 } else if (igbe->regs.txdctl.wthresh() <= usedCache.size()) { 1937 DPRINTF(EthernetDesc, "used > WTHRESH, writing back descriptor\n"); 1938 igbe->anBegin("TXS", "Desc Writeback"); 1939 writeback((igbe->cacheBlockSize()-1)>>4); 1940 } 1941 1942 enableSm(); 1943 igbe->checkDrain(); 1944} 1945 1946void 1947IGbE::TxDescCache::actionAfterWb() 1948{ 1949 DPRINTF(EthernetDesc, "actionAfterWb() completionEnabled: %d\n", 1950 completionEnabled); 1951 igbe->postInterrupt(iGbReg::IT_TXDW); 1952 if (completionEnabled) { 1953 descEnd = igbe->regs.tdh(); 1954 DPRINTF(EthernetDesc, 1955 "Completion writing back value: %d to addr: %#x\n", descEnd, 1956 completionAddress); 1957 igbe->dmaWrite(pciToDma(mbits(completionAddress, 63, 2)), 1958 sizeof(descEnd), &nullEvent, (uint8_t*)&descEnd, 0); 1959 } 1960} 1961 1962void 1963IGbE::TxDescCache::serialize(std::ostream &os) 1964{ 1965 DescCache<TxDesc>::serialize(os); 1966 SERIALIZE_SCALAR(pktDone); 1967 SERIALIZE_SCALAR(isTcp); 1968 SERIALIZE_SCALAR(pktWaiting); 1969 SERIALIZE_SCALAR(pktMultiDesc); 1970 1971 SERIALIZE_SCALAR(useTso); 1972 SERIALIZE_SCALAR(tsoHeaderLen); 1973 SERIALIZE_SCALAR(tsoMss); 1974 SERIALIZE_SCALAR(tsoTotalLen); 1975 SERIALIZE_SCALAR(tsoUsedLen); 1976 SERIALIZE_SCALAR(tsoPrevSeq);; 1977 SERIALIZE_SCALAR(tsoPktPayloadBytes); 1978 SERIALIZE_SCALAR(tsoLoadedHeader); 1979 SERIALIZE_SCALAR(tsoPktHasHeader); 1980 SERIALIZE_ARRAY(tsoHeader, 256); 1981 SERIALIZE_SCALAR(tsoDescBytesUsed); 1982 SERIALIZE_SCALAR(tsoCopyBytes); 1983 SERIALIZE_SCALAR(tsoPkts); 1984 1985 SERIALIZE_SCALAR(completionAddress); 1986 SERIALIZE_SCALAR(completionEnabled); 1987 SERIALIZE_SCALAR(descEnd); 1988} 1989 1990void 1991IGbE::TxDescCache::unserialize(Checkpoint *cp, const std::string §ion) 1992{ 1993 DescCache<TxDesc>::unserialize(cp, section); 1994 UNSERIALIZE_SCALAR(pktDone); 1995 UNSERIALIZE_SCALAR(isTcp); 1996 UNSERIALIZE_SCALAR(pktWaiting); 1997 UNSERIALIZE_SCALAR(pktMultiDesc); 1998 1999 UNSERIALIZE_SCALAR(useTso); 2000 UNSERIALIZE_SCALAR(tsoHeaderLen); 2001 UNSERIALIZE_SCALAR(tsoMss); 2002 UNSERIALIZE_SCALAR(tsoTotalLen); 2003 UNSERIALIZE_SCALAR(tsoUsedLen); 2004 UNSERIALIZE_SCALAR(tsoPrevSeq);; 2005 UNSERIALIZE_SCALAR(tsoPktPayloadBytes); 2006 UNSERIALIZE_SCALAR(tsoLoadedHeader); 2007 UNSERIALIZE_SCALAR(tsoPktHasHeader); 2008 UNSERIALIZE_ARRAY(tsoHeader, 256); 2009 UNSERIALIZE_SCALAR(tsoDescBytesUsed); 2010 UNSERIALIZE_SCALAR(tsoCopyBytes); 2011 UNSERIALIZE_SCALAR(tsoPkts); 2012 2013 UNSERIALIZE_SCALAR(completionAddress); 2014 UNSERIALIZE_SCALAR(completionEnabled); 2015 UNSERIALIZE_SCALAR(descEnd); 2016} 2017 2018bool 2019IGbE::TxDescCache::packetAvailable() 2020{ 2021 if (pktDone) { 2022 pktDone = false; 2023 return true; 2024 } 2025 return false; 2026} 2027 2028void 2029IGbE::TxDescCache::enableSm() 2030{ 2031 if (!igbe->drainManager) { 2032 igbe->txTick = true; 2033 igbe->restartClock(); 2034 } 2035} 2036 2037bool 2038IGbE::TxDescCache::hasOutstandingEvents() 2039{ 2040 return pktEvent.scheduled() || wbEvent.scheduled() || 2041 fetchEvent.scheduled(); 2042} 2043 2044 2045///////////////////////////////////// IGbE ///////////////////////////////// 2046 2047void 2048IGbE::restartClock() 2049{ 2050 if (!tickEvent.scheduled() && (rxTick || txTick || txFifoTick) && 2051 getDrainState() == Drainable::Running) 2052 schedule(tickEvent, clockEdge(Cycles(1))); 2053} 2054 2055unsigned int 2056IGbE::drain(DrainManager *dm) 2057{ 2058 unsigned int count; 2059 count = pioPort.drain(dm) + dmaPort.drain(dm); 2060 if (rxDescCache.hasOutstandingEvents() || 2061 txDescCache.hasOutstandingEvents()) { 2062 count++; 2063 drainManager = dm; 2064 } 2065 2066 txFifoTick = false; 2067 txTick = false; 2068 rxTick = false; 2069 2070 if (tickEvent.scheduled()) 2071 deschedule(tickEvent); 2072 2073 if (count) { 2074 DPRINTF(Drain, "IGbE not drained\n"); 2075 setDrainState(Drainable::Draining); 2076 } else 2077 setDrainState(Drainable::Drained); 2078 2079 return count; 2080} 2081 2082void 2083IGbE::drainResume() 2084{ 2085 Drainable::drainResume(); 2086 2087 txFifoTick = true; 2088 txTick = true; 2089 rxTick = true; 2090 2091 restartClock(); 2092 DPRINTF(EthernetSM, "resuming from drain"); 2093} 2094 2095void 2096IGbE::checkDrain() 2097{ 2098 if (!drainManager) 2099 return; 2100 2101 txFifoTick = false; 2102 txTick = false; 2103 rxTick = false; 2104 if (!rxDescCache.hasOutstandingEvents() && 2105 !txDescCache.hasOutstandingEvents()) { 2106 DPRINTF(Drain, "IGbE done draining, processing drain event\n"); 2107 drainManager->signalDrainDone(); 2108 drainManager = NULL; 2109 } 2110} 2111 2112void 2113IGbE::txStateMachine() 2114{ 2115 if (!regs.tctl.en()) { 2116 txTick = false; 2117 DPRINTF(EthernetSM, "TXS: TX disabled, stopping ticking\n"); 2118 return; 2119 } 2120 2121 // If we have a packet available and it's length is not 0 (meaning it's not 2122 // a multidescriptor packet) put it in the fifo, otherwise an the next 2123 // iteration we'll get the rest of the data 2124 if (txPacket && txDescCache.packetAvailable() 2125 && !txDescCache.packetMultiDesc() && txPacket->length) { 2126 anQ("TXS", "TX FIFO Q"); 2127 DPRINTF(EthernetSM, "TXS: packet placed in TX FIFO\n"); 2128#ifndef NDEBUG 2129 bool success = 2130#endif 2131 txFifo.push(txPacket); 2132 txFifoTick = true && !drainManager; 2133 assert(success); 2134 txPacket = NULL; 2135 anBegin("TXS", "Desc Writeback"); 2136 txDescCache.writeback((cacheBlockSize()-1)>>4); 2137 return; 2138 } 2139 2140 // Only support descriptor granularity 2141 if (regs.txdctl.lwthresh() && 2142 txDescCache.descLeft() < (regs.txdctl.lwthresh() * 8)) { 2143 DPRINTF(EthernetSM, "TXS: LWTHRESH caused posting of TXDLOW\n"); 2144 postInterrupt(IT_TXDLOW); 2145 } 2146 2147 if (!txPacket) { 2148 txPacket = new EthPacketData(16384); 2149 } 2150 2151 if (!txDescCache.packetWaiting()) { 2152 if (txDescCache.descLeft() == 0) { 2153 postInterrupt(IT_TXQE); 2154 anBegin("TXS", "Desc Writeback"); 2155 txDescCache.writeback(0); 2156 anBegin("TXS", "Desc Fetch"); 2157 anWe("TXS", txDescCache.annUnusedCacheQ); 2158 txDescCache.fetchDescriptors(); 2159 DPRINTF(EthernetSM, "TXS: No descriptors left in ring, forcing " 2160 "writeback stopping ticking and posting TXQE\n"); 2161 txTick = false; 2162 return; 2163 } 2164 2165 2166 if (!(txDescCache.descUnused())) { 2167 anBegin("TXS", "Desc Fetch"); 2168 txDescCache.fetchDescriptors(); 2169 anWe("TXS", txDescCache.annUnusedCacheQ); 2170 DPRINTF(EthernetSM, "TXS: No descriptors available in cache, " 2171 "fetching and stopping ticking\n"); 2172 txTick = false; 2173 return; 2174 } 2175 anPq("TXS", txDescCache.annUnusedCacheQ); 2176 2177 2178 txDescCache.processContextDesc(); 2179 if (txDescCache.packetWaiting()) { 2180 DPRINTF(EthernetSM, 2181 "TXS: Fetching TSO header, stopping ticking\n"); 2182 txTick = false; 2183 return; 2184 } 2185 2186 unsigned size = txDescCache.getPacketSize(txPacket); 2187 if (size > 0 && txFifo.avail() > size) { 2188 anRq("TXS", "TX FIFO Q"); 2189 anBegin("TXS", "DMA Packet"); 2190 DPRINTF(EthernetSM, "TXS: Reserving %d bytes in FIFO and " 2191 "beginning DMA of next packet\n", size); 2192 txFifo.reserve(size); 2193 txDescCache.getPacketData(txPacket); 2194 } else if (size == 0) { 2195 DPRINTF(EthernetSM, "TXS: getPacketSize returned: %d\n", size); 2196 DPRINTF(EthernetSM, 2197 "TXS: No packets to get, writing back used descriptors\n"); 2198 anBegin("TXS", "Desc Writeback"); 2199 txDescCache.writeback(0); 2200 } else { 2201 anWf("TXS", "TX FIFO Q"); 2202 DPRINTF(EthernetSM, "TXS: FIFO full, stopping ticking until space " 2203 "available in FIFO\n"); 2204 txTick = false; 2205 } 2206 2207 2208 return; 2209 } 2210 DPRINTF(EthernetSM, "TXS: Nothing to do, stopping ticking\n"); 2211 txTick = false; 2212} 2213 2214bool 2215IGbE::ethRxPkt(EthPacketPtr pkt) 2216{ 2217 rxBytes += pkt->length; 2218 rxPackets++; 2219 2220 DPRINTF(Ethernet, "RxFIFO: Receiving pcakte from wire\n"); 2221 anBegin("RXQ", "Wire Recv"); 2222 2223 2224 if (!regs.rctl.en()) { 2225 DPRINTF(Ethernet, "RxFIFO: RX not enabled, dropping\n"); 2226 anBegin("RXQ", "FIFO Drop", CPA::FL_BAD); 2227 return true; 2228 } 2229 2230 // restart the state machines if they are stopped 2231 rxTick = true && !drainManager; 2232 if ((rxTick || txTick) && !tickEvent.scheduled()) { 2233 DPRINTF(EthernetSM, 2234 "RXS: received packet into fifo, starting ticking\n"); 2235 restartClock(); 2236 } 2237 2238 if (!rxFifo.push(pkt)) { 2239 DPRINTF(Ethernet, "RxFIFO: Packet won't fit in fifo... dropped\n"); 2240 postInterrupt(IT_RXO, true); 2241 anBegin("RXQ", "FIFO Drop", CPA::FL_BAD); 2242 return false; 2243 } 2244 2245 if (CPA::available() && cpa->enabled()) { 2246 assert(sys->numSystemsRunning <= 2); 2247 System *other_sys; 2248 if (sys->systemList[0] == sys) 2249 other_sys = sys->systemList[1]; 2250 else 2251 other_sys = sys->systemList[0]; 2252 2253 cpa->hwDq(CPA::FL_NONE, sys, macAddr, "RXQ", "WireQ", 0, other_sys); 2254 anQ("RXQ", "RX FIFO Q"); 2255 cpa->hwWe(CPA::FL_NONE, sys, macAddr, "RXQ", "WireQ", 0, other_sys); 2256 } 2257 2258 return true; 2259} 2260 2261 2262void 2263IGbE::rxStateMachine() 2264{ 2265 if (!regs.rctl.en()) { 2266 rxTick = false; 2267 DPRINTF(EthernetSM, "RXS: RX disabled, stopping ticking\n"); 2268 return; 2269 } 2270 2271 // If the packet is done check for interrupts/descriptors/etc 2272 if (rxDescCache.packetDone()) { 2273 rxDmaPacket = false; 2274 DPRINTF(EthernetSM, "RXS: Packet completed DMA to memory\n"); 2275 int descLeft = rxDescCache.descLeft(); 2276 DPRINTF(EthernetSM, "RXS: descLeft: %d rdmts: %d rdlen: %d\n", 2277 descLeft, regs.rctl.rdmts(), regs.rdlen()); 2278 switch (regs.rctl.rdmts()) { 2279 case 2: if (descLeft > .125 * regs.rdlen()) break; 2280 case 1: if (descLeft > .250 * regs.rdlen()) break; 2281 case 0: if (descLeft > .500 * regs.rdlen()) break; 2282 DPRINTF(Ethernet, "RXS: Interrupting (RXDMT) " 2283 "because of descriptors left\n"); 2284 postInterrupt(IT_RXDMT); 2285 break; 2286 } 2287 2288 if (rxFifo.empty()) 2289 rxDescCache.writeback(0); 2290 2291 if (descLeft == 0) { 2292 anBegin("RXS", "Writeback Descriptors"); 2293 rxDescCache.writeback(0); 2294 DPRINTF(EthernetSM, "RXS: No descriptors left in ring, forcing" 2295 " writeback and stopping ticking\n"); 2296 rxTick = false; 2297 } 2298 2299 // only support descriptor granulaties 2300 assert(regs.rxdctl.gran()); 2301 2302 if (regs.rxdctl.wthresh() >= rxDescCache.descUsed()) { 2303 DPRINTF(EthernetSM, 2304 "RXS: Writing back because WTHRESH >= descUsed\n"); 2305 anBegin("RXS", "Writeback Descriptors"); 2306 if (regs.rxdctl.wthresh() < (cacheBlockSize()>>4)) 2307 rxDescCache.writeback(regs.rxdctl.wthresh()-1); 2308 else 2309 rxDescCache.writeback((cacheBlockSize()-1)>>4); 2310 } 2311 2312 if ((rxDescCache.descUnused() < regs.rxdctl.pthresh()) && 2313 ((rxDescCache.descLeft() - rxDescCache.descUnused()) > 2314 regs.rxdctl.hthresh())) { 2315 DPRINTF(EthernetSM, "RXS: Fetching descriptors because " 2316 "descUnused < PTHRESH\n"); 2317 anBegin("RXS", "Fetch Descriptors"); 2318 rxDescCache.fetchDescriptors(); 2319 } 2320 2321 if (rxDescCache.descUnused() == 0) { 2322 anBegin("RXS", "Fetch Descriptors"); 2323 rxDescCache.fetchDescriptors(); 2324 anWe("RXS", rxDescCache.annUnusedCacheQ); 2325 DPRINTF(EthernetSM, "RXS: No descriptors available in cache, " 2326 "fetching descriptors and stopping ticking\n"); 2327 rxTick = false; 2328 } 2329 return; 2330 } 2331 2332 if (rxDmaPacket) { 2333 DPRINTF(EthernetSM, 2334 "RXS: stopping ticking until packet DMA completes\n"); 2335 rxTick = false; 2336 return; 2337 } 2338 2339 if (!rxDescCache.descUnused()) { 2340 anBegin("RXS", "Fetch Descriptors"); 2341 rxDescCache.fetchDescriptors(); 2342 anWe("RXS", rxDescCache.annUnusedCacheQ); 2343 DPRINTF(EthernetSM, "RXS: No descriptors available in cache, " 2344 "stopping ticking\n"); 2345 rxTick = false; 2346 DPRINTF(EthernetSM, "RXS: No descriptors available, fetching\n"); 2347 return; 2348 } 2349 anPq("RXS", rxDescCache.annUnusedCacheQ); 2350 2351 if (rxFifo.empty()) { 2352 anWe("RXS", "RX FIFO Q"); 2353 DPRINTF(EthernetSM, "RXS: RxFIFO empty, stopping ticking\n"); 2354 rxTick = false; 2355 return; 2356 } 2357 anPq("RXS", "RX FIFO Q"); 2358 anBegin("RXS", "Get Desc"); 2359 2360 EthPacketPtr pkt; 2361 pkt = rxFifo.front(); 2362 2363 2364 pktOffset = rxDescCache.writePacket(pkt, pktOffset); 2365 DPRINTF(EthernetSM, "RXS: Writing packet into memory\n"); 2366 if (pktOffset == pkt->length) { 2367 anBegin( "RXS", "FIFO Dequeue"); 2368 DPRINTF(EthernetSM, "RXS: Removing packet from FIFO\n"); 2369 pktOffset = 0; 2370 anDq("RXS", "RX FIFO Q"); 2371 rxFifo.pop(); 2372 } 2373 2374 DPRINTF(EthernetSM, "RXS: stopping ticking until packet DMA completes\n"); 2375 rxTick = false; 2376 rxDmaPacket = true; 2377 anBegin("RXS", "DMA Packet"); 2378} 2379 2380void 2381IGbE::txWire() 2382{ 2383 if (txFifo.empty()) { 2384 anWe("TXQ", "TX FIFO Q"); 2385 txFifoTick = false; 2386 return; 2387 } 2388 2389 2390 anPq("TXQ", "TX FIFO Q"); 2391 if (etherInt->sendPacket(txFifo.front())) { 2392 cpa->hwQ(CPA::FL_NONE, sys, macAddr, "TXQ", "WireQ", 0); 2393 if (DTRACE(EthernetSM)) { 2394 IpPtr ip(txFifo.front()); 2395 if (ip) 2396 DPRINTF(EthernetSM, "Transmitting Ip packet with Id=%d\n", 2397 ip->id()); 2398 else 2399 DPRINTF(EthernetSM, "Transmitting Non-Ip packet\n"); 2400 } 2401 anDq("TXQ", "TX FIFO Q"); 2402 anBegin("TXQ", "Wire Send"); 2403 DPRINTF(EthernetSM, 2404 "TxFIFO: Successful transmit, bytes available in fifo: %d\n", 2405 txFifo.avail()); 2406 2407 txBytes += txFifo.front()->length; 2408 txPackets++; 2409 txFifoTick = false; 2410 2411 txFifo.pop(); 2412 } else { 2413 // We'll get woken up when the packet ethTxDone() gets called 2414 txFifoTick = false; 2415 } 2416} 2417 2418void 2419IGbE::tick() 2420{ 2421 DPRINTF(EthernetSM, "IGbE: -------------- Cycle --------------\n"); 2422 2423 if (rxTick) 2424 rxStateMachine(); 2425 2426 if (txTick) 2427 txStateMachine(); 2428 2429 if (txFifoTick) 2430 txWire(); 2431 2432 2433 if (rxTick || txTick || txFifoTick) 2434 schedule(tickEvent, curTick() + clockPeriod()); 2435} 2436 2437void 2438IGbE::ethTxDone() 2439{ 2440 anBegin("TXQ", "Send Done"); 2441 // restart the tx state machines if they are stopped 2442 // fifo to send another packet 2443 // tx sm to put more data into the fifo 2444 txFifoTick = true && !drainManager; 2445 if (txDescCache.descLeft() != 0 && !drainManager) 2446 txTick = true; 2447 2448 restartClock(); 2449 txWire(); 2450 DPRINTF(EthernetSM, "TxFIFO: Transmission complete\n"); 2451} 2452 2453void 2454IGbE::serialize(std::ostream &os) 2455{ 2456 PciDevice::serialize(os); 2457 2458 regs.serialize(os); 2459 SERIALIZE_SCALAR(eeOpBits); 2460 SERIALIZE_SCALAR(eeAddrBits); 2461 SERIALIZE_SCALAR(eeDataBits); 2462 SERIALIZE_SCALAR(eeOpcode); 2463 SERIALIZE_SCALAR(eeAddr); 2464 SERIALIZE_SCALAR(lastInterrupt); 2465 SERIALIZE_ARRAY(flash,iGbReg::EEPROM_SIZE); 2466 2467 rxFifo.serialize("rxfifo", os); 2468 txFifo.serialize("txfifo", os); 2469 2470 bool txPktExists = txPacket; 2471 SERIALIZE_SCALAR(txPktExists); 2472 if (txPktExists) 2473 txPacket->serialize("txpacket", os); 2474 2475 Tick rdtr_time = 0, radv_time = 0, tidv_time = 0, tadv_time = 0, 2476 inter_time = 0; 2477 2478 if (rdtrEvent.scheduled()) 2479 rdtr_time = rdtrEvent.when(); 2480 SERIALIZE_SCALAR(rdtr_time); 2481 2482 if (radvEvent.scheduled()) 2483 radv_time = radvEvent.when(); 2484 SERIALIZE_SCALAR(radv_time); 2485 2486 if (tidvEvent.scheduled()) 2487 tidv_time = tidvEvent.when(); 2488 SERIALIZE_SCALAR(tidv_time); 2489 2490 if (tadvEvent.scheduled()) 2491 tadv_time = tadvEvent.when(); 2492 SERIALIZE_SCALAR(tadv_time); 2493 2494 if (interEvent.scheduled()) 2495 inter_time = interEvent.when(); 2496 SERIALIZE_SCALAR(inter_time); 2497 2498 SERIALIZE_SCALAR(pktOffset); 2499 2500 nameOut(os, csprintf("%s.TxDescCache", name())); 2501 txDescCache.serialize(os); 2502 2503 nameOut(os, csprintf("%s.RxDescCache", name())); 2504 rxDescCache.serialize(os); 2505} 2506 2507void 2508IGbE::unserialize(Checkpoint *cp, const std::string §ion) 2509{ 2510 PciDevice::unserialize(cp, section); 2511 2512 regs.unserialize(cp, section); 2513 UNSERIALIZE_SCALAR(eeOpBits); 2514 UNSERIALIZE_SCALAR(eeAddrBits); 2515 UNSERIALIZE_SCALAR(eeDataBits); 2516 UNSERIALIZE_SCALAR(eeOpcode); 2517 UNSERIALIZE_SCALAR(eeAddr); 2518 UNSERIALIZE_SCALAR(lastInterrupt); 2519 UNSERIALIZE_ARRAY(flash,iGbReg::EEPROM_SIZE); 2520 2521 rxFifo.unserialize("rxfifo", cp, section); 2522 txFifo.unserialize("txfifo", cp, section); 2523 2524 bool txPktExists; 2525 UNSERIALIZE_SCALAR(txPktExists); 2526 if (txPktExists) { 2527 txPacket = new EthPacketData(16384); 2528 txPacket->unserialize("txpacket", cp, section); 2529 } 2530 2531 rxTick = true; 2532 txTick = true; 2533 txFifoTick = true; 2534 2535 Tick rdtr_time, radv_time, tidv_time, tadv_time, inter_time; 2536 UNSERIALIZE_SCALAR(rdtr_time); 2537 UNSERIALIZE_SCALAR(radv_time); 2538 UNSERIALIZE_SCALAR(tidv_time); 2539 UNSERIALIZE_SCALAR(tadv_time); 2540 UNSERIALIZE_SCALAR(inter_time); 2541 2542 if (rdtr_time) 2543 schedule(rdtrEvent, rdtr_time); 2544 2545 if (radv_time) 2546 schedule(radvEvent, radv_time); 2547 2548 if (tidv_time) 2549 schedule(tidvEvent, tidv_time); 2550 2551 if (tadv_time) 2552 schedule(tadvEvent, tadv_time); 2553 2554 if (inter_time) 2555 schedule(interEvent, inter_time); 2556 2557 UNSERIALIZE_SCALAR(pktOffset); 2558 2559 txDescCache.unserialize(cp, csprintf("%s.TxDescCache", section)); 2560 2561 rxDescCache.unserialize(cp, csprintf("%s.RxDescCache", section)); 2562} 2563 2564IGbE * 2565IGbEParams::create() 2566{ 2567 return new IGbE(this); 2568} 2569