1 /* 2 * Core code for QEMU e1000e emulation 3 * 4 * Software developer's manuals: 5 * http://www.intel.com/content/dam/doc/datasheet/82574l-gbe-controller-datasheet.pdf 6 * 7 * Copyright (c) 2015 Ravello Systems LTD (http://ravellosystems.com) 8 * Developed by Daynix Computing LTD (http://www.daynix.com) 9 * 10 * Authors: 11 * Dmitry Fleytman <dmitry@daynix.com> 12 * Leonid Bloch <leonid@daynix.com> 13 * Yan Vugenfirer <yan@daynix.com> 14 * 15 * Based on work done by: 16 * Nir Peleg, Tutis Systems Ltd. for Qumranet Inc. 17 * Copyright (c) 2008 Qumranet 18 * Based on work done by: 19 * Copyright (c) 2007 Dan Aloni 20 * Copyright (c) 2004 Antony T Curtis 21 * 22 * This library is free software; you can redistribute it and/or 23 * modify it under the terms of the GNU Lesser General Public 24 * License as published by the Free Software Foundation; either 25 * version 2.1 of the License, or (at your option) any later version. 26 * 27 * This library is distributed in the hope that it will be useful, 28 * but WITHOUT ANY WARRANTY; without even the implied warranty of 29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 30 * Lesser General Public License for more details. 31 * 32 * You should have received a copy of the GNU Lesser General Public 33 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 34 */ 35 36 #include "qemu/osdep.h" 37 #include "qemu/log.h" 38 #include "net/net.h" 39 #include "net/tap.h" 40 #include "hw/net/mii.h" 41 #include "hw/pci/msi.h" 42 #include "hw/pci/msix.h" 43 #include "sysemu/runstate.h" 44 45 #include "net_tx_pkt.h" 46 #include "net_rx_pkt.h" 47 48 #include "e1000_common.h" 49 #include "e1000x_common.h" 50 #include "e1000e_core.h" 51 52 #include "trace.h" 53 54 /* No more then 7813 interrupts per second according to spec 10.2.4.2 */ 55 #define E1000E_MIN_XITR (500) 56 57 #define E1000E_MAX_TX_FRAGS (64) 58 59 union e1000_rx_desc_union { 60 struct e1000_rx_desc legacy; 61 union e1000_rx_desc_extended extended; 62 union e1000_rx_desc_packet_split packet_split; 63 }; 64 65 static ssize_t 66 e1000e_receive_internal(E1000ECore *core, const struct iovec *iov, int iovcnt, 67 bool has_vnet); 68 69 static inline void 70 e1000e_set_interrupt_cause(E1000ECore *core, uint32_t val); 71 72 static void e1000e_reset(E1000ECore *core, bool sw); 73 74 static inline void 75 e1000e_process_ts_option(E1000ECore *core, struct e1000_tx_desc *dp) 76 { 77 if (le32_to_cpu(dp->upper.data) & E1000_TXD_EXTCMD_TSTAMP) { 78 trace_e1000e_wrn_no_ts_support(); 79 } 80 } 81 82 static inline void 83 e1000e_process_snap_option(E1000ECore *core, uint32_t cmd_and_length) 84 { 85 if (cmd_and_length & E1000_TXD_CMD_SNAP) { 86 trace_e1000e_wrn_no_snap_support(); 87 } 88 } 89 90 static inline void 91 e1000e_raise_legacy_irq(E1000ECore *core) 92 { 93 trace_e1000e_irq_legacy_notify(true); 94 e1000x_inc_reg_if_not_full(core->mac, IAC); 95 pci_set_irq(core->owner, 1); 96 } 97 98 static inline void 99 e1000e_lower_legacy_irq(E1000ECore *core) 100 { 101 trace_e1000e_irq_legacy_notify(false); 102 pci_set_irq(core->owner, 0); 103 } 104 105 static inline void 106 e1000e_intrmgr_rearm_timer(E1000IntrDelayTimer *timer) 107 { 108 int64_t delay_ns = (int64_t) timer->core->mac[timer->delay_reg] * 109 timer->delay_resolution_ns; 110 111 trace_e1000e_irq_rearm_timer(timer->delay_reg << 2, delay_ns); 112 113 timer_mod(timer->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + delay_ns); 114 115 timer->running = true; 116 } 117 118 static void 119 e1000e_intmgr_timer_resume(E1000IntrDelayTimer *timer) 120 { 121 if (timer->running) { 122 e1000e_intrmgr_rearm_timer(timer); 123 } 124 } 125 126 static void 127 e1000e_intmgr_timer_pause(E1000IntrDelayTimer *timer) 128 { 129 if (timer->running) { 130 timer_del(timer->timer); 131 } 132 } 133 134 static inline void 135 e1000e_intrmgr_stop_timer(E1000IntrDelayTimer *timer) 136 { 137 if (timer->running) { 138 timer_del(timer->timer); 139 timer->running = false; 140 } 141 } 142 143 static inline void 144 e1000e_intrmgr_fire_delayed_interrupts(E1000ECore *core) 145 { 146 trace_e1000e_irq_fire_delayed_interrupts(); 147 e1000e_set_interrupt_cause(core, 0); 148 } 149 150 static void 151 e1000e_intrmgr_on_timer(void *opaque) 152 { 153 E1000IntrDelayTimer *timer = opaque; 154 155 trace_e1000e_irq_throttling_timer(timer->delay_reg << 2); 156 157 timer->running = false; 158 e1000e_intrmgr_fire_delayed_interrupts(timer->core); 159 } 160 161 static void 162 e1000e_intrmgr_on_throttling_timer(void *opaque) 163 { 164 E1000IntrDelayTimer *timer = opaque; 165 166 timer->running = false; 167 168 if (msi_enabled(timer->core->owner)) { 169 trace_e1000e_irq_msi_notify_postponed(); 170 /* Clear msi_causes_pending to fire MSI eventually */ 171 timer->core->msi_causes_pending = 0; 172 e1000e_set_interrupt_cause(timer->core, 0); 173 } else { 174 trace_e1000e_irq_legacy_notify_postponed(); 175 e1000e_set_interrupt_cause(timer->core, 0); 176 } 177 } 178 179 static void 180 e1000e_intrmgr_on_msix_throttling_timer(void *opaque) 181 { 182 E1000IntrDelayTimer *timer = opaque; 183 int idx = timer - &timer->core->eitr[0]; 184 185 timer->running = false; 186 187 trace_e1000e_irq_msix_notify_postponed_vec(idx); 188 msix_notify(timer->core->owner, idx); 189 } 190 191 static void 192 e1000e_intrmgr_initialize_all_timers(E1000ECore *core, bool create) 193 { 194 int i; 195 196 core->radv.delay_reg = RADV; 197 core->rdtr.delay_reg = RDTR; 198 core->raid.delay_reg = RAID; 199 core->tadv.delay_reg = TADV; 200 core->tidv.delay_reg = TIDV; 201 202 core->radv.delay_resolution_ns = E1000_INTR_DELAY_NS_RES; 203 core->rdtr.delay_resolution_ns = E1000_INTR_DELAY_NS_RES; 204 core->raid.delay_resolution_ns = E1000_INTR_DELAY_NS_RES; 205 core->tadv.delay_resolution_ns = E1000_INTR_DELAY_NS_RES; 206 core->tidv.delay_resolution_ns = E1000_INTR_DELAY_NS_RES; 207 208 core->radv.core = core; 209 core->rdtr.core = core; 210 core->raid.core = core; 211 core->tadv.core = core; 212 core->tidv.core = core; 213 214 core->itr.core = core; 215 core->itr.delay_reg = ITR; 216 core->itr.delay_resolution_ns = E1000_INTR_THROTTLING_NS_RES; 217 218 for (i = 0; i < E1000E_MSIX_VEC_NUM; i++) { 219 core->eitr[i].core = core; 220 core->eitr[i].delay_reg = EITR + i; 221 core->eitr[i].delay_resolution_ns = E1000_INTR_THROTTLING_NS_RES; 222 } 223 224 if (!create) { 225 return; 226 } 227 228 core->radv.timer = 229 timer_new_ns(QEMU_CLOCK_VIRTUAL, e1000e_intrmgr_on_timer, &core->radv); 230 core->rdtr.timer = 231 timer_new_ns(QEMU_CLOCK_VIRTUAL, e1000e_intrmgr_on_timer, &core->rdtr); 232 core->raid.timer = 233 timer_new_ns(QEMU_CLOCK_VIRTUAL, e1000e_intrmgr_on_timer, &core->raid); 234 235 core->tadv.timer = 236 timer_new_ns(QEMU_CLOCK_VIRTUAL, e1000e_intrmgr_on_timer, &core->tadv); 237 core->tidv.timer = 238 timer_new_ns(QEMU_CLOCK_VIRTUAL, e1000e_intrmgr_on_timer, &core->tidv); 239 240 core->itr.timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, 241 e1000e_intrmgr_on_throttling_timer, 242 &core->itr); 243 244 for (i = 0; i < E1000E_MSIX_VEC_NUM; i++) { 245 core->eitr[i].timer = 246 timer_new_ns(QEMU_CLOCK_VIRTUAL, 247 e1000e_intrmgr_on_msix_throttling_timer, 248 &core->eitr[i]); 249 } 250 } 251 252 static inline void 253 e1000e_intrmgr_stop_delay_timers(E1000ECore *core) 254 { 255 e1000e_intrmgr_stop_timer(&core->radv); 256 e1000e_intrmgr_stop_timer(&core->rdtr); 257 e1000e_intrmgr_stop_timer(&core->raid); 258 e1000e_intrmgr_stop_timer(&core->tidv); 259 e1000e_intrmgr_stop_timer(&core->tadv); 260 } 261 262 static bool 263 e1000e_intrmgr_delay_rx_causes(E1000ECore *core, uint32_t *causes) 264 { 265 uint32_t delayable_causes; 266 uint32_t rdtr = core->mac[RDTR]; 267 uint32_t radv = core->mac[RADV]; 268 uint32_t raid = core->mac[RAID]; 269 270 if (msix_enabled(core->owner)) { 271 return false; 272 } 273 274 delayable_causes = E1000_ICR_RXQ0 | 275 E1000_ICR_RXQ1 | 276 E1000_ICR_RXT0; 277 278 if (!(core->mac[RFCTL] & E1000_RFCTL_ACK_DIS)) { 279 delayable_causes |= E1000_ICR_ACK; 280 } 281 282 /* Clean up all causes that may be delayed */ 283 core->delayed_causes |= *causes & delayable_causes; 284 *causes &= ~delayable_causes; 285 286 /* 287 * Check if delayed RX interrupts disabled by client 288 * or if there are causes that cannot be delayed 289 */ 290 if ((rdtr == 0) || (*causes != 0)) { 291 return false; 292 } 293 294 /* 295 * Check if delayed RX ACK interrupts disabled by client 296 * and there is an ACK packet received 297 */ 298 if ((raid == 0) && (core->delayed_causes & E1000_ICR_ACK)) { 299 return false; 300 } 301 302 /* All causes delayed */ 303 e1000e_intrmgr_rearm_timer(&core->rdtr); 304 305 if (!core->radv.running && (radv != 0)) { 306 e1000e_intrmgr_rearm_timer(&core->radv); 307 } 308 309 if (!core->raid.running && (core->delayed_causes & E1000_ICR_ACK)) { 310 e1000e_intrmgr_rearm_timer(&core->raid); 311 } 312 313 return true; 314 } 315 316 static bool 317 e1000e_intrmgr_delay_tx_causes(E1000ECore *core, uint32_t *causes) 318 { 319 static const uint32_t delayable_causes = E1000_ICR_TXQ0 | 320 E1000_ICR_TXQ1 | 321 E1000_ICR_TXQE | 322 E1000_ICR_TXDW; 323 324 if (msix_enabled(core->owner)) { 325 return false; 326 } 327 328 /* Clean up all causes that may be delayed */ 329 core->delayed_causes |= *causes & delayable_causes; 330 *causes &= ~delayable_causes; 331 332 /* If there are causes that cannot be delayed */ 333 if (*causes != 0) { 334 return false; 335 } 336 337 /* All causes delayed */ 338 e1000e_intrmgr_rearm_timer(&core->tidv); 339 340 if (!core->tadv.running && (core->mac[TADV] != 0)) { 341 e1000e_intrmgr_rearm_timer(&core->tadv); 342 } 343 344 return true; 345 } 346 347 static uint32_t 348 e1000e_intmgr_collect_delayed_causes(E1000ECore *core) 349 { 350 uint32_t res; 351 352 if (msix_enabled(core->owner)) { 353 assert(core->delayed_causes == 0); 354 return 0; 355 } 356 357 res = core->delayed_causes; 358 core->delayed_causes = 0; 359 360 e1000e_intrmgr_stop_delay_timers(core); 361 362 return res; 363 } 364 365 static void 366 e1000e_intrmgr_fire_all_timers(E1000ECore *core) 367 { 368 int i; 369 uint32_t val = e1000e_intmgr_collect_delayed_causes(core); 370 371 trace_e1000e_irq_adding_delayed_causes(val, core->mac[ICR]); 372 core->mac[ICR] |= val; 373 374 if (core->itr.running) { 375 timer_del(core->itr.timer); 376 e1000e_intrmgr_on_throttling_timer(&core->itr); 377 } 378 379 for (i = 0; i < E1000E_MSIX_VEC_NUM; i++) { 380 if (core->eitr[i].running) { 381 timer_del(core->eitr[i].timer); 382 e1000e_intrmgr_on_msix_throttling_timer(&core->eitr[i]); 383 } 384 } 385 } 386 387 static void 388 e1000e_intrmgr_resume(E1000ECore *core) 389 { 390 int i; 391 392 e1000e_intmgr_timer_resume(&core->radv); 393 e1000e_intmgr_timer_resume(&core->rdtr); 394 e1000e_intmgr_timer_resume(&core->raid); 395 e1000e_intmgr_timer_resume(&core->tidv); 396 e1000e_intmgr_timer_resume(&core->tadv); 397 398 e1000e_intmgr_timer_resume(&core->itr); 399 400 for (i = 0; i < E1000E_MSIX_VEC_NUM; i++) { 401 e1000e_intmgr_timer_resume(&core->eitr[i]); 402 } 403 } 404 405 static void 406 e1000e_intrmgr_pause(E1000ECore *core) 407 { 408 int i; 409 410 e1000e_intmgr_timer_pause(&core->radv); 411 e1000e_intmgr_timer_pause(&core->rdtr); 412 e1000e_intmgr_timer_pause(&core->raid); 413 e1000e_intmgr_timer_pause(&core->tidv); 414 e1000e_intmgr_timer_pause(&core->tadv); 415 416 e1000e_intmgr_timer_pause(&core->itr); 417 418 for (i = 0; i < E1000E_MSIX_VEC_NUM; i++) { 419 e1000e_intmgr_timer_pause(&core->eitr[i]); 420 } 421 } 422 423 static void 424 e1000e_intrmgr_reset(E1000ECore *core) 425 { 426 int i; 427 428 core->delayed_causes = 0; 429 430 e1000e_intrmgr_stop_delay_timers(core); 431 432 e1000e_intrmgr_stop_timer(&core->itr); 433 434 for (i = 0; i < E1000E_MSIX_VEC_NUM; i++) { 435 e1000e_intrmgr_stop_timer(&core->eitr[i]); 436 } 437 } 438 439 static void 440 e1000e_intrmgr_pci_unint(E1000ECore *core) 441 { 442 int i; 443 444 timer_free(core->radv.timer); 445 timer_free(core->rdtr.timer); 446 timer_free(core->raid.timer); 447 448 timer_free(core->tadv.timer); 449 timer_free(core->tidv.timer); 450 451 timer_free(core->itr.timer); 452 453 for (i = 0; i < E1000E_MSIX_VEC_NUM; i++) { 454 timer_free(core->eitr[i].timer); 455 } 456 } 457 458 static void 459 e1000e_intrmgr_pci_realize(E1000ECore *core) 460 { 461 e1000e_intrmgr_initialize_all_timers(core, true); 462 } 463 464 static inline bool 465 e1000e_rx_csum_enabled(E1000ECore *core) 466 { 467 return (core->mac[RXCSUM] & E1000_RXCSUM_PCSD) ? false : true; 468 } 469 470 static inline bool 471 e1000e_rx_use_legacy_descriptor(E1000ECore *core) 472 { 473 return (core->mac[RFCTL] & E1000_RFCTL_EXTEN) ? false : true; 474 } 475 476 static inline bool 477 e1000e_rx_use_ps_descriptor(E1000ECore *core) 478 { 479 return !e1000e_rx_use_legacy_descriptor(core) && 480 (core->mac[RCTL] & E1000_RCTL_DTYP_PS); 481 } 482 483 static inline bool 484 e1000e_rss_enabled(E1000ECore *core) 485 { 486 return E1000_MRQC_ENABLED(core->mac[MRQC]) && 487 !e1000e_rx_csum_enabled(core) && 488 !e1000e_rx_use_legacy_descriptor(core); 489 } 490 491 typedef struct E1000E_RSSInfo_st { 492 bool enabled; 493 uint32_t hash; 494 uint32_t queue; 495 uint32_t type; 496 } E1000E_RSSInfo; 497 498 static uint32_t 499 e1000e_rss_get_hash_type(E1000ECore *core, struct NetRxPkt *pkt) 500 { 501 bool hasip4, hasip6; 502 EthL4HdrProto l4hdr_proto; 503 504 assert(e1000e_rss_enabled(core)); 505 506 net_rx_pkt_get_protocols(pkt, &hasip4, &hasip6, &l4hdr_proto); 507 508 if (hasip4) { 509 trace_e1000e_rx_rss_ip4(l4hdr_proto, core->mac[MRQC], 510 E1000_MRQC_EN_TCPIPV4(core->mac[MRQC]), 511 E1000_MRQC_EN_IPV4(core->mac[MRQC])); 512 513 if (l4hdr_proto == ETH_L4_HDR_PROTO_TCP && 514 E1000_MRQC_EN_TCPIPV4(core->mac[MRQC])) { 515 return E1000_MRQ_RSS_TYPE_IPV4TCP; 516 } 517 518 if (E1000_MRQC_EN_IPV4(core->mac[MRQC])) { 519 return E1000_MRQ_RSS_TYPE_IPV4; 520 } 521 } else if (hasip6) { 522 eth_ip6_hdr_info *ip6info = net_rx_pkt_get_ip6_info(pkt); 523 524 bool ex_dis = core->mac[RFCTL] & E1000_RFCTL_IPV6_EX_DIS; 525 bool new_ex_dis = core->mac[RFCTL] & E1000_RFCTL_NEW_IPV6_EXT_DIS; 526 527 /* 528 * Following two traces must not be combined because resulting 529 * event will have 11 arguments totally and some trace backends 530 * (at least "ust") have limitation of maximum 10 arguments per 531 * event. Events with more arguments fail to compile for 532 * backends like these. 533 */ 534 trace_e1000e_rx_rss_ip6_rfctl(core->mac[RFCTL]); 535 trace_e1000e_rx_rss_ip6(ex_dis, new_ex_dis, l4hdr_proto, 536 ip6info->has_ext_hdrs, 537 ip6info->rss_ex_dst_valid, 538 ip6info->rss_ex_src_valid, 539 core->mac[MRQC], 540 E1000_MRQC_EN_TCPIPV6(core->mac[MRQC]), 541 E1000_MRQC_EN_IPV6EX(core->mac[MRQC]), 542 E1000_MRQC_EN_IPV6(core->mac[MRQC])); 543 544 if ((!ex_dis || !ip6info->has_ext_hdrs) && 545 (!new_ex_dis || !(ip6info->rss_ex_dst_valid || 546 ip6info->rss_ex_src_valid))) { 547 548 if (l4hdr_proto == ETH_L4_HDR_PROTO_TCP && 549 E1000_MRQC_EN_TCPIPV6(core->mac[MRQC])) { 550 return E1000_MRQ_RSS_TYPE_IPV6TCP; 551 } 552 553 if (E1000_MRQC_EN_IPV6EX(core->mac[MRQC])) { 554 return E1000_MRQ_RSS_TYPE_IPV6EX; 555 } 556 557 } 558 559 if (E1000_MRQC_EN_IPV6(core->mac[MRQC])) { 560 return E1000_MRQ_RSS_TYPE_IPV6; 561 } 562 563 } 564 565 return E1000_MRQ_RSS_TYPE_NONE; 566 } 567 568 static uint32_t 569 e1000e_rss_calc_hash(E1000ECore *core, 570 struct NetRxPkt *pkt, 571 E1000E_RSSInfo *info) 572 { 573 NetRxPktRssType type; 574 575 assert(e1000e_rss_enabled(core)); 576 577 switch (info->type) { 578 case E1000_MRQ_RSS_TYPE_IPV4: 579 type = NetPktRssIpV4; 580 break; 581 case E1000_MRQ_RSS_TYPE_IPV4TCP: 582 type = NetPktRssIpV4Tcp; 583 break; 584 case E1000_MRQ_RSS_TYPE_IPV6TCP: 585 type = NetPktRssIpV6TcpEx; 586 break; 587 case E1000_MRQ_RSS_TYPE_IPV6: 588 type = NetPktRssIpV6; 589 break; 590 case E1000_MRQ_RSS_TYPE_IPV6EX: 591 type = NetPktRssIpV6Ex; 592 break; 593 default: 594 assert(false); 595 return 0; 596 } 597 598 return net_rx_pkt_calc_rss_hash(pkt, type, (uint8_t *) &core->mac[RSSRK]); 599 } 600 601 static void 602 e1000e_rss_parse_packet(E1000ECore *core, 603 struct NetRxPkt *pkt, 604 E1000E_RSSInfo *info) 605 { 606 trace_e1000e_rx_rss_started(); 607 608 if (!e1000e_rss_enabled(core)) { 609 info->enabled = false; 610 info->hash = 0; 611 info->queue = 0; 612 info->type = 0; 613 trace_e1000e_rx_rss_disabled(); 614 return; 615 } 616 617 info->enabled = true; 618 619 info->type = e1000e_rss_get_hash_type(core, pkt); 620 621 trace_e1000e_rx_rss_type(info->type); 622 623 if (info->type == E1000_MRQ_RSS_TYPE_NONE) { 624 info->hash = 0; 625 info->queue = 0; 626 return; 627 } 628 629 info->hash = e1000e_rss_calc_hash(core, pkt, info); 630 info->queue = E1000_RSS_QUEUE(&core->mac[RETA], info->hash); 631 } 632 633 static bool 634 e1000e_setup_tx_offloads(E1000ECore *core, struct e1000e_tx *tx) 635 { 636 if (tx->props.tse && tx->cptse) { 637 if (!net_tx_pkt_build_vheader(tx->tx_pkt, true, true, tx->props.mss)) { 638 return false; 639 } 640 641 net_tx_pkt_update_ip_checksums(tx->tx_pkt); 642 e1000x_inc_reg_if_not_full(core->mac, TSCTC); 643 return true; 644 } 645 646 if (tx->sum_needed & E1000_TXD_POPTS_TXSM) { 647 if (!net_tx_pkt_build_vheader(tx->tx_pkt, false, true, 0)) { 648 return false; 649 } 650 } 651 652 if (tx->sum_needed & E1000_TXD_POPTS_IXSM) { 653 net_tx_pkt_update_ip_hdr_checksum(tx->tx_pkt); 654 } 655 656 return true; 657 } 658 659 static void e1000e_tx_pkt_callback(void *core, 660 const struct iovec *iov, 661 int iovcnt, 662 const struct iovec *virt_iov, 663 int virt_iovcnt) 664 { 665 e1000e_receive_internal(core, virt_iov, virt_iovcnt, true); 666 } 667 668 static bool 669 e1000e_tx_pkt_send(E1000ECore *core, struct e1000e_tx *tx, int queue_index) 670 { 671 int target_queue = MIN(core->max_queue_num, queue_index); 672 NetClientState *queue = qemu_get_subqueue(core->owner_nic, target_queue); 673 674 if (!e1000e_setup_tx_offloads(core, tx)) { 675 return false; 676 } 677 678 net_tx_pkt_dump(tx->tx_pkt); 679 680 if ((core->phy[0][MII_BMCR] & MII_BMCR_LOOPBACK) || 681 ((core->mac[RCTL] & E1000_RCTL_LBM_MAC) == E1000_RCTL_LBM_MAC)) { 682 return net_tx_pkt_send_custom(tx->tx_pkt, false, 683 e1000e_tx_pkt_callback, core); 684 } else { 685 return net_tx_pkt_send(tx->tx_pkt, queue); 686 } 687 } 688 689 static void 690 e1000e_on_tx_done_update_stats(E1000ECore *core, struct NetTxPkt *tx_pkt) 691 { 692 static const int PTCregs[6] = { PTC64, PTC127, PTC255, PTC511, 693 PTC1023, PTC1522 }; 694 695 size_t tot_len = net_tx_pkt_get_total_len(tx_pkt) + 4; 696 697 e1000x_increase_size_stats(core->mac, PTCregs, tot_len); 698 e1000x_inc_reg_if_not_full(core->mac, TPT); 699 e1000x_grow_8reg_if_not_full(core->mac, TOTL, tot_len); 700 701 switch (net_tx_pkt_get_packet_type(tx_pkt)) { 702 case ETH_PKT_BCAST: 703 e1000x_inc_reg_if_not_full(core->mac, BPTC); 704 break; 705 case ETH_PKT_MCAST: 706 e1000x_inc_reg_if_not_full(core->mac, MPTC); 707 break; 708 case ETH_PKT_UCAST: 709 break; 710 default: 711 g_assert_not_reached(); 712 } 713 714 core->mac[GPTC] = core->mac[TPT]; 715 core->mac[GOTCL] = core->mac[TOTL]; 716 core->mac[GOTCH] = core->mac[TOTH]; 717 } 718 719 static void 720 e1000e_process_tx_desc(E1000ECore *core, 721 struct e1000e_tx *tx, 722 struct e1000_tx_desc *dp, 723 int queue_index) 724 { 725 uint32_t txd_lower = le32_to_cpu(dp->lower.data); 726 uint32_t dtype = txd_lower & (E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D); 727 unsigned int split_size = txd_lower & 0xffff; 728 uint64_t addr; 729 struct e1000_context_desc *xp = (struct e1000_context_desc *)dp; 730 bool eop = txd_lower & E1000_TXD_CMD_EOP; 731 732 if (dtype == E1000_TXD_CMD_DEXT) { /* context descriptor */ 733 e1000x_read_tx_ctx_descr(xp, &tx->props); 734 e1000e_process_snap_option(core, le32_to_cpu(xp->cmd_and_length)); 735 return; 736 } else if (dtype == (E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D)) { 737 /* data descriptor */ 738 tx->sum_needed = le32_to_cpu(dp->upper.data) >> 8; 739 tx->cptse = (txd_lower & E1000_TXD_CMD_TSE) ? 1 : 0; 740 e1000e_process_ts_option(core, dp); 741 } else { 742 /* legacy descriptor */ 743 e1000e_process_ts_option(core, dp); 744 tx->cptse = 0; 745 } 746 747 addr = le64_to_cpu(dp->buffer_addr); 748 749 if (!tx->skip_cp) { 750 if (!net_tx_pkt_add_raw_fragment(tx->tx_pkt, addr, split_size)) { 751 tx->skip_cp = true; 752 } 753 } 754 755 if (eop) { 756 if (!tx->skip_cp && net_tx_pkt_parse(tx->tx_pkt)) { 757 if (e1000x_vlan_enabled(core->mac) && 758 e1000x_is_vlan_txd(txd_lower)) { 759 net_tx_pkt_setup_vlan_header_ex(tx->tx_pkt, 760 le16_to_cpu(dp->upper.fields.special), core->mac[VET]); 761 } 762 if (e1000e_tx_pkt_send(core, tx, queue_index)) { 763 e1000e_on_tx_done_update_stats(core, tx->tx_pkt); 764 } 765 } 766 767 tx->skip_cp = false; 768 net_tx_pkt_reset(tx->tx_pkt); 769 770 tx->sum_needed = 0; 771 tx->cptse = 0; 772 } 773 } 774 775 static inline uint32_t 776 e1000e_tx_wb_interrupt_cause(E1000ECore *core, int queue_idx) 777 { 778 if (!msix_enabled(core->owner)) { 779 return E1000_ICR_TXDW; 780 } 781 782 return (queue_idx == 0) ? E1000_ICR_TXQ0 : E1000_ICR_TXQ1; 783 } 784 785 static inline uint32_t 786 e1000e_rx_wb_interrupt_cause(E1000ECore *core, int queue_idx, 787 bool min_threshold_hit) 788 { 789 if (!msix_enabled(core->owner)) { 790 return E1000_ICS_RXT0 | (min_threshold_hit ? E1000_ICS_RXDMT0 : 0); 791 } 792 793 return (queue_idx == 0) ? E1000_ICR_RXQ0 : E1000_ICR_RXQ1; 794 } 795 796 static uint32_t 797 e1000e_txdesc_writeback(E1000ECore *core, dma_addr_t base, 798 struct e1000_tx_desc *dp, bool *ide, int queue_idx) 799 { 800 uint32_t txd_upper, txd_lower = le32_to_cpu(dp->lower.data); 801 802 if (!(txd_lower & E1000_TXD_CMD_RS) && 803 !(core->mac[IVAR] & E1000_IVAR_TX_INT_EVERY_WB)) { 804 return 0; 805 } 806 807 *ide = (txd_lower & E1000_TXD_CMD_IDE) ? true : false; 808 809 txd_upper = le32_to_cpu(dp->upper.data) | E1000_TXD_STAT_DD; 810 811 dp->upper.data = cpu_to_le32(txd_upper); 812 pci_dma_write(core->owner, base + ((char *)&dp->upper - (char *)dp), 813 &dp->upper, sizeof(dp->upper)); 814 return e1000e_tx_wb_interrupt_cause(core, queue_idx); 815 } 816 817 typedef struct E1000E_RingInfo_st { 818 int dbah; 819 int dbal; 820 int dlen; 821 int dh; 822 int dt; 823 int idx; 824 } E1000E_RingInfo; 825 826 static inline bool 827 e1000e_ring_empty(E1000ECore *core, const E1000E_RingInfo *r) 828 { 829 return core->mac[r->dh] == core->mac[r->dt] || 830 core->mac[r->dt] >= core->mac[r->dlen] / E1000_RING_DESC_LEN; 831 } 832 833 static inline uint64_t 834 e1000e_ring_base(E1000ECore *core, const E1000E_RingInfo *r) 835 { 836 uint64_t bah = core->mac[r->dbah]; 837 uint64_t bal = core->mac[r->dbal]; 838 839 return (bah << 32) + bal; 840 } 841 842 static inline uint64_t 843 e1000e_ring_head_descr(E1000ECore *core, const E1000E_RingInfo *r) 844 { 845 return e1000e_ring_base(core, r) + E1000_RING_DESC_LEN * core->mac[r->dh]; 846 } 847 848 static inline void 849 e1000e_ring_advance(E1000ECore *core, const E1000E_RingInfo *r, uint32_t count) 850 { 851 core->mac[r->dh] += count; 852 853 if (core->mac[r->dh] * E1000_RING_DESC_LEN >= core->mac[r->dlen]) { 854 core->mac[r->dh] = 0; 855 } 856 } 857 858 static inline uint32_t 859 e1000e_ring_free_descr_num(E1000ECore *core, const E1000E_RingInfo *r) 860 { 861 trace_e1000e_ring_free_space(r->idx, core->mac[r->dlen], 862 core->mac[r->dh], core->mac[r->dt]); 863 864 if (core->mac[r->dh] <= core->mac[r->dt]) { 865 return core->mac[r->dt] - core->mac[r->dh]; 866 } 867 868 if (core->mac[r->dh] > core->mac[r->dt]) { 869 return core->mac[r->dlen] / E1000_RING_DESC_LEN + 870 core->mac[r->dt] - core->mac[r->dh]; 871 } 872 873 g_assert_not_reached(); 874 return 0; 875 } 876 877 static inline bool 878 e1000e_ring_enabled(E1000ECore *core, const E1000E_RingInfo *r) 879 { 880 return core->mac[r->dlen] > 0; 881 } 882 883 static inline uint32_t 884 e1000e_ring_len(E1000ECore *core, const E1000E_RingInfo *r) 885 { 886 return core->mac[r->dlen]; 887 } 888 889 typedef struct E1000E_TxRing_st { 890 const E1000E_RingInfo *i; 891 struct e1000e_tx *tx; 892 } E1000E_TxRing; 893 894 static inline int 895 e1000e_mq_queue_idx(int base_reg_idx, int reg_idx) 896 { 897 return (reg_idx - base_reg_idx) / (0x100 >> 2); 898 } 899 900 static inline void 901 e1000e_tx_ring_init(E1000ECore *core, E1000E_TxRing *txr, int idx) 902 { 903 static const E1000E_RingInfo i[E1000E_NUM_QUEUES] = { 904 { TDBAH, TDBAL, TDLEN, TDH, TDT, 0 }, 905 { TDBAH1, TDBAL1, TDLEN1, TDH1, TDT1, 1 } 906 }; 907 908 assert(idx < ARRAY_SIZE(i)); 909 910 txr->i = &i[idx]; 911 txr->tx = &core->tx[idx]; 912 } 913 914 typedef struct E1000E_RxRing_st { 915 const E1000E_RingInfo *i; 916 } E1000E_RxRing; 917 918 static inline void 919 e1000e_rx_ring_init(E1000ECore *core, E1000E_RxRing *rxr, int idx) 920 { 921 static const E1000E_RingInfo i[E1000E_NUM_QUEUES] = { 922 { RDBAH0, RDBAL0, RDLEN0, RDH0, RDT0, 0 }, 923 { RDBAH1, RDBAL1, RDLEN1, RDH1, RDT1, 1 } 924 }; 925 926 assert(idx < ARRAY_SIZE(i)); 927 928 rxr->i = &i[idx]; 929 } 930 931 static void 932 e1000e_start_xmit(E1000ECore *core, const E1000E_TxRing *txr) 933 { 934 dma_addr_t base; 935 struct e1000_tx_desc desc; 936 bool ide = false; 937 const E1000E_RingInfo *txi = txr->i; 938 uint32_t cause = E1000_ICS_TXQE; 939 940 if (!(core->mac[TCTL] & E1000_TCTL_EN)) { 941 trace_e1000e_tx_disabled(); 942 return; 943 } 944 945 while (!e1000e_ring_empty(core, txi)) { 946 base = e1000e_ring_head_descr(core, txi); 947 948 pci_dma_read(core->owner, base, &desc, sizeof(desc)); 949 950 trace_e1000e_tx_descr((void *)(intptr_t)desc.buffer_addr, 951 desc.lower.data, desc.upper.data); 952 953 e1000e_process_tx_desc(core, txr->tx, &desc, txi->idx); 954 cause |= e1000e_txdesc_writeback(core, base, &desc, &ide, txi->idx); 955 956 e1000e_ring_advance(core, txi, 1); 957 } 958 959 if (!ide || !e1000e_intrmgr_delay_tx_causes(core, &cause)) { 960 e1000e_set_interrupt_cause(core, cause); 961 } 962 } 963 964 static bool 965 e1000e_has_rxbufs(E1000ECore *core, const E1000E_RingInfo *r, 966 size_t total_size) 967 { 968 uint32_t bufs = e1000e_ring_free_descr_num(core, r); 969 970 trace_e1000e_rx_has_buffers(r->idx, bufs, total_size, 971 core->rx_desc_buf_size); 972 973 return total_size <= bufs / (core->rx_desc_len / E1000_MIN_RX_DESC_LEN) * 974 core->rx_desc_buf_size; 975 } 976 977 void 978 e1000e_start_recv(E1000ECore *core) 979 { 980 int i; 981 982 trace_e1000e_rx_start_recv(); 983 984 for (i = 0; i <= core->max_queue_num; i++) { 985 qemu_flush_queued_packets(qemu_get_subqueue(core->owner_nic, i)); 986 } 987 } 988 989 bool 990 e1000e_can_receive(E1000ECore *core) 991 { 992 int i; 993 994 if (!e1000x_rx_ready(core->owner, core->mac)) { 995 return false; 996 } 997 998 for (i = 0; i < E1000E_NUM_QUEUES; i++) { 999 E1000E_RxRing rxr; 1000 1001 e1000e_rx_ring_init(core, &rxr, i); 1002 if (e1000e_ring_enabled(core, rxr.i) && 1003 e1000e_has_rxbufs(core, rxr.i, 1)) { 1004 trace_e1000e_rx_can_recv(); 1005 return true; 1006 } 1007 } 1008 1009 trace_e1000e_rx_can_recv_rings_full(); 1010 return false; 1011 } 1012 1013 ssize_t 1014 e1000e_receive(E1000ECore *core, const uint8_t *buf, size_t size) 1015 { 1016 const struct iovec iov = { 1017 .iov_base = (uint8_t *)buf, 1018 .iov_len = size 1019 }; 1020 1021 return e1000e_receive_iov(core, &iov, 1); 1022 } 1023 1024 static inline bool 1025 e1000e_rx_l3_cso_enabled(E1000ECore *core) 1026 { 1027 return !!(core->mac[RXCSUM] & E1000_RXCSUM_IPOFLD); 1028 } 1029 1030 static inline bool 1031 e1000e_rx_l4_cso_enabled(E1000ECore *core) 1032 { 1033 return !!(core->mac[RXCSUM] & E1000_RXCSUM_TUOFLD); 1034 } 1035 1036 static bool 1037 e1000e_receive_filter(E1000ECore *core, const uint8_t *buf, int size) 1038 { 1039 uint32_t rctl = core->mac[RCTL]; 1040 1041 if (e1000x_is_vlan_packet(buf, core->mac[VET]) && 1042 e1000x_vlan_rx_filter_enabled(core->mac)) { 1043 uint16_t vid = lduw_be_p(&PKT_GET_VLAN_HDR(buf)->h_tci); 1044 uint32_t vfta = 1045 ldl_le_p((uint32_t *)(core->mac + VFTA) + 1046 ((vid >> E1000_VFTA_ENTRY_SHIFT) & E1000_VFTA_ENTRY_MASK)); 1047 if ((vfta & (1 << (vid & E1000_VFTA_ENTRY_BIT_SHIFT_MASK))) == 0) { 1048 trace_e1000e_rx_flt_vlan_mismatch(vid); 1049 return false; 1050 } else { 1051 trace_e1000e_rx_flt_vlan_match(vid); 1052 } 1053 } 1054 1055 switch (net_rx_pkt_get_packet_type(core->rx_pkt)) { 1056 case ETH_PKT_UCAST: 1057 if (rctl & E1000_RCTL_UPE) { 1058 return true; /* promiscuous ucast */ 1059 } 1060 break; 1061 1062 case ETH_PKT_BCAST: 1063 if (rctl & E1000_RCTL_BAM) { 1064 return true; /* broadcast enabled */ 1065 } 1066 break; 1067 1068 case ETH_PKT_MCAST: 1069 if (rctl & E1000_RCTL_MPE) { 1070 return true; /* promiscuous mcast */ 1071 } 1072 break; 1073 1074 default: 1075 g_assert_not_reached(); 1076 } 1077 1078 return e1000x_rx_group_filter(core->mac, buf); 1079 } 1080 1081 static inline void 1082 e1000e_read_lgcy_rx_descr(E1000ECore *core, struct e1000_rx_desc *desc, 1083 hwaddr *buff_addr) 1084 { 1085 *buff_addr = le64_to_cpu(desc->buffer_addr); 1086 } 1087 1088 static inline void 1089 e1000e_read_ext_rx_descr(E1000ECore *core, union e1000_rx_desc_extended *desc, 1090 hwaddr *buff_addr) 1091 { 1092 *buff_addr = le64_to_cpu(desc->read.buffer_addr); 1093 } 1094 1095 static inline void 1096 e1000e_read_ps_rx_descr(E1000ECore *core, 1097 union e1000_rx_desc_packet_split *desc, 1098 hwaddr buff_addr[MAX_PS_BUFFERS]) 1099 { 1100 int i; 1101 1102 for (i = 0; i < MAX_PS_BUFFERS; i++) { 1103 buff_addr[i] = le64_to_cpu(desc->read.buffer_addr[i]); 1104 } 1105 1106 trace_e1000e_rx_desc_ps_read(buff_addr[0], buff_addr[1], 1107 buff_addr[2], buff_addr[3]); 1108 } 1109 1110 static inline void 1111 e1000e_read_rx_descr(E1000ECore *core, union e1000_rx_desc_union *desc, 1112 hwaddr buff_addr[MAX_PS_BUFFERS]) 1113 { 1114 if (e1000e_rx_use_legacy_descriptor(core)) { 1115 e1000e_read_lgcy_rx_descr(core, &desc->legacy, &buff_addr[0]); 1116 buff_addr[1] = buff_addr[2] = buff_addr[3] = 0; 1117 } else { 1118 if (core->mac[RCTL] & E1000_RCTL_DTYP_PS) { 1119 e1000e_read_ps_rx_descr(core, &desc->packet_split, buff_addr); 1120 } else { 1121 e1000e_read_ext_rx_descr(core, &desc->extended, &buff_addr[0]); 1122 buff_addr[1] = buff_addr[2] = buff_addr[3] = 0; 1123 } 1124 } 1125 } 1126 1127 static void 1128 e1000e_verify_csum_in_sw(E1000ECore *core, 1129 struct NetRxPkt *pkt, 1130 uint32_t *status_flags, 1131 EthL4HdrProto l4hdr_proto) 1132 { 1133 bool csum_valid; 1134 uint32_t csum_error; 1135 1136 if (e1000e_rx_l3_cso_enabled(core)) { 1137 if (!net_rx_pkt_validate_l3_csum(pkt, &csum_valid)) { 1138 trace_e1000e_rx_metadata_l3_csum_validation_failed(); 1139 } else { 1140 csum_error = csum_valid ? 0 : E1000_RXDEXT_STATERR_IPE; 1141 *status_flags |= E1000_RXD_STAT_IPCS | csum_error; 1142 } 1143 } else { 1144 trace_e1000e_rx_metadata_l3_cso_disabled(); 1145 } 1146 1147 if (!e1000e_rx_l4_cso_enabled(core)) { 1148 trace_e1000e_rx_metadata_l4_cso_disabled(); 1149 return; 1150 } 1151 1152 if (!net_rx_pkt_validate_l4_csum(pkt, &csum_valid)) { 1153 trace_e1000e_rx_metadata_l4_csum_validation_failed(); 1154 return; 1155 } 1156 1157 csum_error = csum_valid ? 0 : E1000_RXDEXT_STATERR_TCPE; 1158 *status_flags |= E1000_RXD_STAT_TCPCS | csum_error; 1159 1160 if (l4hdr_proto == ETH_L4_HDR_PROTO_UDP) { 1161 *status_flags |= E1000_RXD_STAT_UDPCS; 1162 } 1163 } 1164 1165 static inline bool 1166 e1000e_is_tcp_ack(E1000ECore *core, struct NetRxPkt *rx_pkt) 1167 { 1168 if (!net_rx_pkt_is_tcp_ack(rx_pkt)) { 1169 return false; 1170 } 1171 1172 if (core->mac[RFCTL] & E1000_RFCTL_ACK_DATA_DIS) { 1173 return !net_rx_pkt_has_tcp_data(rx_pkt); 1174 } 1175 1176 return true; 1177 } 1178 1179 static void 1180 e1000e_build_rx_metadata(E1000ECore *core, 1181 struct NetRxPkt *pkt, 1182 bool is_eop, 1183 const E1000E_RSSInfo *rss_info, 1184 uint32_t *rss, uint32_t *mrq, 1185 uint32_t *status_flags, 1186 uint16_t *ip_id, 1187 uint16_t *vlan_tag) 1188 { 1189 struct virtio_net_hdr *vhdr; 1190 bool hasip4, hasip6; 1191 EthL4HdrProto l4hdr_proto; 1192 uint32_t pkt_type; 1193 1194 *status_flags = E1000_RXD_STAT_DD; 1195 1196 /* No additional metadata needed for non-EOP descriptors */ 1197 if (!is_eop) { 1198 goto func_exit; 1199 } 1200 1201 *status_flags |= E1000_RXD_STAT_EOP; 1202 1203 net_rx_pkt_get_protocols(pkt, &hasip4, &hasip6, &l4hdr_proto); 1204 trace_e1000e_rx_metadata_protocols(hasip4, hasip6, l4hdr_proto); 1205 1206 /* VLAN state */ 1207 if (net_rx_pkt_is_vlan_stripped(pkt)) { 1208 *status_flags |= E1000_RXD_STAT_VP; 1209 *vlan_tag = cpu_to_le16(net_rx_pkt_get_vlan_tag(pkt)); 1210 trace_e1000e_rx_metadata_vlan(*vlan_tag); 1211 } 1212 1213 /* Packet parsing results */ 1214 if ((core->mac[RXCSUM] & E1000_RXCSUM_PCSD) != 0) { 1215 if (rss_info->enabled) { 1216 *rss = cpu_to_le32(rss_info->hash); 1217 *mrq = cpu_to_le32(rss_info->type | (rss_info->queue << 8)); 1218 trace_e1000e_rx_metadata_rss(*rss, *mrq); 1219 } 1220 } else if (hasip4) { 1221 *status_flags |= E1000_RXD_STAT_IPIDV; 1222 *ip_id = cpu_to_le16(net_rx_pkt_get_ip_id(pkt)); 1223 trace_e1000e_rx_metadata_ip_id(*ip_id); 1224 } 1225 1226 if (l4hdr_proto == ETH_L4_HDR_PROTO_TCP && e1000e_is_tcp_ack(core, pkt)) { 1227 *status_flags |= E1000_RXD_STAT_ACK; 1228 trace_e1000e_rx_metadata_ack(); 1229 } 1230 1231 if (hasip6 && (core->mac[RFCTL] & E1000_RFCTL_IPV6_DIS)) { 1232 trace_e1000e_rx_metadata_ipv6_filtering_disabled(); 1233 pkt_type = E1000_RXD_PKT_MAC; 1234 } else if (l4hdr_proto == ETH_L4_HDR_PROTO_TCP || 1235 l4hdr_proto == ETH_L4_HDR_PROTO_UDP) { 1236 pkt_type = hasip4 ? E1000_RXD_PKT_IP4_XDP : E1000_RXD_PKT_IP6_XDP; 1237 } else if (hasip4 || hasip6) { 1238 pkt_type = hasip4 ? E1000_RXD_PKT_IP4 : E1000_RXD_PKT_IP6; 1239 } else { 1240 pkt_type = E1000_RXD_PKT_MAC; 1241 } 1242 1243 *status_flags |= E1000_RXD_PKT_TYPE(pkt_type); 1244 trace_e1000e_rx_metadata_pkt_type(pkt_type); 1245 1246 /* RX CSO information */ 1247 if (hasip6 && (core->mac[RFCTL] & E1000_RFCTL_IPV6_XSUM_DIS)) { 1248 trace_e1000e_rx_metadata_ipv6_sum_disabled(); 1249 goto func_exit; 1250 } 1251 1252 vhdr = net_rx_pkt_get_vhdr(pkt); 1253 1254 if (!(vhdr->flags & VIRTIO_NET_HDR_F_DATA_VALID) && 1255 !(vhdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM)) { 1256 trace_e1000e_rx_metadata_virthdr_no_csum_info(); 1257 e1000e_verify_csum_in_sw(core, pkt, status_flags, l4hdr_proto); 1258 goto func_exit; 1259 } 1260 1261 if (e1000e_rx_l3_cso_enabled(core)) { 1262 *status_flags |= hasip4 ? E1000_RXD_STAT_IPCS : 0; 1263 } else { 1264 trace_e1000e_rx_metadata_l3_cso_disabled(); 1265 } 1266 1267 if (e1000e_rx_l4_cso_enabled(core)) { 1268 switch (l4hdr_proto) { 1269 case ETH_L4_HDR_PROTO_TCP: 1270 *status_flags |= E1000_RXD_STAT_TCPCS; 1271 break; 1272 1273 case ETH_L4_HDR_PROTO_UDP: 1274 *status_flags |= E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS; 1275 break; 1276 1277 default: 1278 break; 1279 } 1280 } else { 1281 trace_e1000e_rx_metadata_l4_cso_disabled(); 1282 } 1283 1284 trace_e1000e_rx_metadata_status_flags(*status_flags); 1285 1286 func_exit: 1287 *status_flags = cpu_to_le32(*status_flags); 1288 } 1289 1290 static inline void 1291 e1000e_write_lgcy_rx_descr(E1000ECore *core, struct e1000_rx_desc *desc, 1292 struct NetRxPkt *pkt, 1293 const E1000E_RSSInfo *rss_info, 1294 uint16_t length) 1295 { 1296 uint32_t status_flags, rss, mrq; 1297 uint16_t ip_id; 1298 1299 assert(!rss_info->enabled); 1300 1301 desc->length = cpu_to_le16(length); 1302 desc->csum = 0; 1303 1304 e1000e_build_rx_metadata(core, pkt, pkt != NULL, 1305 rss_info, 1306 &rss, &mrq, 1307 &status_flags, &ip_id, 1308 &desc->special); 1309 desc->errors = (uint8_t) (le32_to_cpu(status_flags) >> 24); 1310 desc->status = (uint8_t) le32_to_cpu(status_flags); 1311 } 1312 1313 static inline void 1314 e1000e_write_ext_rx_descr(E1000ECore *core, union e1000_rx_desc_extended *desc, 1315 struct NetRxPkt *pkt, 1316 const E1000E_RSSInfo *rss_info, 1317 uint16_t length) 1318 { 1319 memset(&desc->wb, 0, sizeof(desc->wb)); 1320 1321 desc->wb.upper.length = cpu_to_le16(length); 1322 1323 e1000e_build_rx_metadata(core, pkt, pkt != NULL, 1324 rss_info, 1325 &desc->wb.lower.hi_dword.rss, 1326 &desc->wb.lower.mrq, 1327 &desc->wb.upper.status_error, 1328 &desc->wb.lower.hi_dword.csum_ip.ip_id, 1329 &desc->wb.upper.vlan); 1330 } 1331 1332 static inline void 1333 e1000e_write_ps_rx_descr(E1000ECore *core, 1334 union e1000_rx_desc_packet_split *desc, 1335 struct NetRxPkt *pkt, 1336 const E1000E_RSSInfo *rss_info, 1337 size_t ps_hdr_len, 1338 uint16_t(*written)[MAX_PS_BUFFERS]) 1339 { 1340 int i; 1341 1342 memset(&desc->wb, 0, sizeof(desc->wb)); 1343 1344 desc->wb.middle.length0 = cpu_to_le16((*written)[0]); 1345 1346 for (i = 0; i < PS_PAGE_BUFFERS; i++) { 1347 desc->wb.upper.length[i] = cpu_to_le16((*written)[i + 1]); 1348 } 1349 1350 e1000e_build_rx_metadata(core, pkt, pkt != NULL, 1351 rss_info, 1352 &desc->wb.lower.hi_dword.rss, 1353 &desc->wb.lower.mrq, 1354 &desc->wb.middle.status_error, 1355 &desc->wb.lower.hi_dword.csum_ip.ip_id, 1356 &desc->wb.middle.vlan); 1357 1358 desc->wb.upper.header_status = 1359 cpu_to_le16(ps_hdr_len | (ps_hdr_len ? E1000_RXDPS_HDRSTAT_HDRSP : 0)); 1360 1361 trace_e1000e_rx_desc_ps_write((*written)[0], (*written)[1], 1362 (*written)[2], (*written)[3]); 1363 } 1364 1365 static inline void 1366 e1000e_write_rx_descr(E1000ECore *core, union e1000_rx_desc_union *desc, 1367 struct NetRxPkt *pkt, const E1000E_RSSInfo *rss_info, 1368 size_t ps_hdr_len, uint16_t(*written)[MAX_PS_BUFFERS]) 1369 { 1370 if (e1000e_rx_use_legacy_descriptor(core)) { 1371 assert(ps_hdr_len == 0); 1372 e1000e_write_lgcy_rx_descr(core, &desc->legacy, pkt, rss_info, 1373 (*written)[0]); 1374 } else { 1375 if (core->mac[RCTL] & E1000_RCTL_DTYP_PS) { 1376 e1000e_write_ps_rx_descr(core, &desc->packet_split, pkt, rss_info, 1377 ps_hdr_len, written); 1378 } else { 1379 assert(ps_hdr_len == 0); 1380 e1000e_write_ext_rx_descr(core, &desc->extended, pkt, rss_info, 1381 (*written)[0]); 1382 } 1383 } 1384 } 1385 1386 static inline void 1387 e1000e_pci_dma_write_rx_desc(E1000ECore *core, dma_addr_t addr, 1388 union e1000_rx_desc_union *desc, dma_addr_t len) 1389 { 1390 PCIDevice *dev = core->owner; 1391 1392 if (e1000e_rx_use_legacy_descriptor(core)) { 1393 struct e1000_rx_desc *d = &desc->legacy; 1394 size_t offset = offsetof(struct e1000_rx_desc, status); 1395 uint8_t status = d->status; 1396 1397 d->status &= ~E1000_RXD_STAT_DD; 1398 pci_dma_write(dev, addr, desc, len); 1399 1400 if (status & E1000_RXD_STAT_DD) { 1401 d->status = status; 1402 pci_dma_write(dev, addr + offset, &status, sizeof(status)); 1403 } 1404 } else { 1405 if (core->mac[RCTL] & E1000_RCTL_DTYP_PS) { 1406 union e1000_rx_desc_packet_split *d = &desc->packet_split; 1407 size_t offset = offsetof(union e1000_rx_desc_packet_split, 1408 wb.middle.status_error); 1409 uint32_t status = d->wb.middle.status_error; 1410 1411 d->wb.middle.status_error &= ~E1000_RXD_STAT_DD; 1412 pci_dma_write(dev, addr, desc, len); 1413 1414 if (status & E1000_RXD_STAT_DD) { 1415 d->wb.middle.status_error = status; 1416 pci_dma_write(dev, addr + offset, &status, sizeof(status)); 1417 } 1418 } else { 1419 union e1000_rx_desc_extended *d = &desc->extended; 1420 size_t offset = offsetof(union e1000_rx_desc_extended, 1421 wb.upper.status_error); 1422 uint32_t status = d->wb.upper.status_error; 1423 1424 d->wb.upper.status_error &= ~E1000_RXD_STAT_DD; 1425 pci_dma_write(dev, addr, desc, len); 1426 1427 if (status & E1000_RXD_STAT_DD) { 1428 d->wb.upper.status_error = status; 1429 pci_dma_write(dev, addr + offset, &status, sizeof(status)); 1430 } 1431 } 1432 } 1433 } 1434 1435 typedef struct e1000e_ba_state_st { 1436 uint16_t written[MAX_PS_BUFFERS]; 1437 uint8_t cur_idx; 1438 } e1000e_ba_state; 1439 1440 static inline void 1441 e1000e_write_hdr_to_rx_buffers(E1000ECore *core, 1442 hwaddr ba[MAX_PS_BUFFERS], 1443 e1000e_ba_state *bastate, 1444 const char *data, 1445 dma_addr_t data_len) 1446 { 1447 assert(data_len <= core->rxbuf_sizes[0] - bastate->written[0]); 1448 1449 pci_dma_write(core->owner, ba[0] + bastate->written[0], data, data_len); 1450 bastate->written[0] += data_len; 1451 1452 bastate->cur_idx = 1; 1453 } 1454 1455 static void 1456 e1000e_write_to_rx_buffers(E1000ECore *core, 1457 hwaddr ba[MAX_PS_BUFFERS], 1458 e1000e_ba_state *bastate, 1459 const char *data, 1460 dma_addr_t data_len) 1461 { 1462 while (data_len > 0) { 1463 uint32_t cur_buf_len = core->rxbuf_sizes[bastate->cur_idx]; 1464 uint32_t cur_buf_bytes_left = cur_buf_len - 1465 bastate->written[bastate->cur_idx]; 1466 uint32_t bytes_to_write = MIN(data_len, cur_buf_bytes_left); 1467 1468 trace_e1000e_rx_desc_buff_write(bastate->cur_idx, 1469 ba[bastate->cur_idx], 1470 bastate->written[bastate->cur_idx], 1471 data, 1472 bytes_to_write); 1473 1474 pci_dma_write(core->owner, 1475 ba[bastate->cur_idx] + bastate->written[bastate->cur_idx], 1476 data, bytes_to_write); 1477 1478 bastate->written[bastate->cur_idx] += bytes_to_write; 1479 data += bytes_to_write; 1480 data_len -= bytes_to_write; 1481 1482 if (bastate->written[bastate->cur_idx] == cur_buf_len) { 1483 bastate->cur_idx++; 1484 } 1485 1486 assert(bastate->cur_idx < MAX_PS_BUFFERS); 1487 } 1488 } 1489 1490 static void 1491 e1000e_update_rx_stats(E1000ECore *core, 1492 size_t data_size, 1493 size_t data_fcs_size) 1494 { 1495 e1000x_update_rx_total_stats(core->mac, data_size, data_fcs_size); 1496 1497 switch (net_rx_pkt_get_packet_type(core->rx_pkt)) { 1498 case ETH_PKT_BCAST: 1499 e1000x_inc_reg_if_not_full(core->mac, BPRC); 1500 break; 1501 1502 case ETH_PKT_MCAST: 1503 e1000x_inc_reg_if_not_full(core->mac, MPRC); 1504 break; 1505 1506 default: 1507 break; 1508 } 1509 } 1510 1511 static inline bool 1512 e1000e_rx_descr_threshold_hit(E1000ECore *core, const E1000E_RingInfo *rxi) 1513 { 1514 return e1000e_ring_free_descr_num(core, rxi) == 1515 e1000e_ring_len(core, rxi) >> core->rxbuf_min_shift; 1516 } 1517 1518 static bool 1519 e1000e_do_ps(E1000ECore *core, struct NetRxPkt *pkt, size_t *hdr_len) 1520 { 1521 bool hasip4, hasip6; 1522 EthL4HdrProto l4hdr_proto; 1523 bool fragment; 1524 1525 if (!e1000e_rx_use_ps_descriptor(core)) { 1526 return false; 1527 } 1528 1529 net_rx_pkt_get_protocols(pkt, &hasip4, &hasip6, &l4hdr_proto); 1530 1531 if (hasip4) { 1532 fragment = net_rx_pkt_get_ip4_info(pkt)->fragment; 1533 } else if (hasip6) { 1534 fragment = net_rx_pkt_get_ip6_info(pkt)->fragment; 1535 } else { 1536 return false; 1537 } 1538 1539 if (fragment && (core->mac[RFCTL] & E1000_RFCTL_IPFRSP_DIS)) { 1540 return false; 1541 } 1542 1543 if (l4hdr_proto == ETH_L4_HDR_PROTO_TCP || 1544 l4hdr_proto == ETH_L4_HDR_PROTO_UDP) { 1545 *hdr_len = net_rx_pkt_get_l5_hdr_offset(pkt); 1546 } else { 1547 *hdr_len = net_rx_pkt_get_l4_hdr_offset(pkt); 1548 } 1549 1550 if ((*hdr_len > core->rxbuf_sizes[0]) || 1551 (*hdr_len > net_rx_pkt_get_total_len(pkt))) { 1552 return false; 1553 } 1554 1555 return true; 1556 } 1557 1558 static void 1559 e1000e_write_packet_to_guest(E1000ECore *core, struct NetRxPkt *pkt, 1560 const E1000E_RxRing *rxr, 1561 const E1000E_RSSInfo *rss_info) 1562 { 1563 PCIDevice *d = core->owner; 1564 dma_addr_t base; 1565 union e1000_rx_desc_union desc; 1566 size_t desc_size; 1567 size_t desc_offset = 0; 1568 size_t iov_ofs = 0; 1569 1570 struct iovec *iov = net_rx_pkt_get_iovec(pkt); 1571 size_t size = net_rx_pkt_get_total_len(pkt); 1572 size_t total_size = size + e1000x_fcs_len(core->mac); 1573 const E1000E_RingInfo *rxi; 1574 size_t ps_hdr_len = 0; 1575 bool do_ps = e1000e_do_ps(core, pkt, &ps_hdr_len); 1576 bool is_first = true; 1577 1578 rxi = rxr->i; 1579 1580 do { 1581 hwaddr ba[MAX_PS_BUFFERS]; 1582 e1000e_ba_state bastate = { { 0 } }; 1583 bool is_last = false; 1584 1585 desc_size = total_size - desc_offset; 1586 1587 if (desc_size > core->rx_desc_buf_size) { 1588 desc_size = core->rx_desc_buf_size; 1589 } 1590 1591 if (e1000e_ring_empty(core, rxi)) { 1592 return; 1593 } 1594 1595 base = e1000e_ring_head_descr(core, rxi); 1596 1597 pci_dma_read(d, base, &desc, core->rx_desc_len); 1598 1599 trace_e1000e_rx_descr(rxi->idx, base, core->rx_desc_len); 1600 1601 e1000e_read_rx_descr(core, &desc, ba); 1602 1603 if (ba[0]) { 1604 if (desc_offset < size) { 1605 static const uint32_t fcs_pad; 1606 size_t iov_copy; 1607 size_t copy_size = size - desc_offset; 1608 if (copy_size > core->rx_desc_buf_size) { 1609 copy_size = core->rx_desc_buf_size; 1610 } 1611 1612 /* For PS mode copy the packet header first */ 1613 if (do_ps) { 1614 if (is_first) { 1615 size_t ps_hdr_copied = 0; 1616 do { 1617 iov_copy = MIN(ps_hdr_len - ps_hdr_copied, 1618 iov->iov_len - iov_ofs); 1619 1620 e1000e_write_hdr_to_rx_buffers(core, ba, &bastate, 1621 iov->iov_base, iov_copy); 1622 1623 copy_size -= iov_copy; 1624 ps_hdr_copied += iov_copy; 1625 1626 iov_ofs += iov_copy; 1627 if (iov_ofs == iov->iov_len) { 1628 iov++; 1629 iov_ofs = 0; 1630 } 1631 } while (ps_hdr_copied < ps_hdr_len); 1632 1633 is_first = false; 1634 } else { 1635 /* Leave buffer 0 of each descriptor except first */ 1636 /* empty as per spec 7.1.5.1 */ 1637 e1000e_write_hdr_to_rx_buffers(core, ba, &bastate, 1638 NULL, 0); 1639 } 1640 } 1641 1642 /* Copy packet payload */ 1643 while (copy_size) { 1644 iov_copy = MIN(copy_size, iov->iov_len - iov_ofs); 1645 1646 e1000e_write_to_rx_buffers(core, ba, &bastate, 1647 iov->iov_base + iov_ofs, iov_copy); 1648 1649 copy_size -= iov_copy; 1650 iov_ofs += iov_copy; 1651 if (iov_ofs == iov->iov_len) { 1652 iov++; 1653 iov_ofs = 0; 1654 } 1655 } 1656 1657 if (desc_offset + desc_size >= total_size) { 1658 /* Simulate FCS checksum presence in the last descriptor */ 1659 e1000e_write_to_rx_buffers(core, ba, &bastate, 1660 (const char *) &fcs_pad, e1000x_fcs_len(core->mac)); 1661 } 1662 } 1663 } else { /* as per intel docs; skip descriptors with null buf addr */ 1664 trace_e1000e_rx_null_descriptor(); 1665 } 1666 desc_offset += desc_size; 1667 if (desc_offset >= total_size) { 1668 is_last = true; 1669 } 1670 1671 e1000e_write_rx_descr(core, &desc, is_last ? core->rx_pkt : NULL, 1672 rss_info, do_ps ? ps_hdr_len : 0, &bastate.written); 1673 e1000e_pci_dma_write_rx_desc(core, base, &desc, core->rx_desc_len); 1674 1675 e1000e_ring_advance(core, rxi, 1676 core->rx_desc_len / E1000_MIN_RX_DESC_LEN); 1677 1678 } while (desc_offset < total_size); 1679 1680 e1000e_update_rx_stats(core, size, total_size); 1681 } 1682 1683 static inline void 1684 e1000e_rx_fix_l4_csum(E1000ECore *core, struct NetRxPkt *pkt) 1685 { 1686 struct virtio_net_hdr *vhdr = net_rx_pkt_get_vhdr(pkt); 1687 1688 if (vhdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) { 1689 net_rx_pkt_fix_l4_csum(pkt); 1690 } 1691 } 1692 1693 ssize_t 1694 e1000e_receive_iov(E1000ECore *core, const struct iovec *iov, int iovcnt) 1695 { 1696 return e1000e_receive_internal(core, iov, iovcnt, core->has_vnet); 1697 } 1698 1699 static ssize_t 1700 e1000e_receive_internal(E1000ECore *core, const struct iovec *iov, int iovcnt, 1701 bool has_vnet) 1702 { 1703 static const int maximum_ethernet_hdr_len = (ETH_HLEN + 4); 1704 1705 uint32_t n = 0; 1706 uint8_t min_buf[ETH_ZLEN]; 1707 struct iovec min_iov; 1708 uint8_t *filter_buf; 1709 size_t size, orig_size; 1710 size_t iov_ofs = 0; 1711 E1000E_RxRing rxr; 1712 E1000E_RSSInfo rss_info; 1713 size_t total_size; 1714 ssize_t retval; 1715 bool rdmts_hit; 1716 1717 trace_e1000e_rx_receive_iov(iovcnt); 1718 1719 if (!e1000x_hw_rx_enabled(core->mac)) { 1720 return -1; 1721 } 1722 1723 /* Pull virtio header in */ 1724 if (has_vnet) { 1725 net_rx_pkt_set_vhdr_iovec(core->rx_pkt, iov, iovcnt); 1726 iov_ofs = sizeof(struct virtio_net_hdr); 1727 } else { 1728 net_rx_pkt_unset_vhdr(core->rx_pkt); 1729 } 1730 1731 filter_buf = iov->iov_base + iov_ofs; 1732 orig_size = iov_size(iov, iovcnt); 1733 size = orig_size - iov_ofs; 1734 1735 /* Pad to minimum Ethernet frame length */ 1736 if (size < sizeof(min_buf)) { 1737 iov_to_buf(iov, iovcnt, iov_ofs, min_buf, size); 1738 memset(&min_buf[size], 0, sizeof(min_buf) - size); 1739 e1000x_inc_reg_if_not_full(core->mac, RUC); 1740 min_iov.iov_base = filter_buf = min_buf; 1741 min_iov.iov_len = size = sizeof(min_buf); 1742 iovcnt = 1; 1743 iov = &min_iov; 1744 iov_ofs = 0; 1745 } else if (iov->iov_len < maximum_ethernet_hdr_len) { 1746 /* This is very unlikely, but may happen. */ 1747 iov_to_buf(iov, iovcnt, iov_ofs, min_buf, maximum_ethernet_hdr_len); 1748 filter_buf = min_buf; 1749 } 1750 1751 /* Discard oversized packets if !LPE and !SBP. */ 1752 if (e1000x_is_oversized(core->mac, size)) { 1753 return orig_size; 1754 } 1755 1756 net_rx_pkt_set_packet_type(core->rx_pkt, 1757 get_eth_packet_type(PKT_GET_ETH_HDR(filter_buf))); 1758 1759 if (!e1000e_receive_filter(core, filter_buf, size)) { 1760 trace_e1000e_rx_flt_dropped(); 1761 return orig_size; 1762 } 1763 1764 net_rx_pkt_attach_iovec_ex(core->rx_pkt, iov, iovcnt, iov_ofs, 1765 e1000x_vlan_enabled(core->mac), core->mac[VET]); 1766 1767 e1000e_rss_parse_packet(core, core->rx_pkt, &rss_info); 1768 e1000e_rx_ring_init(core, &rxr, rss_info.queue); 1769 1770 total_size = net_rx_pkt_get_total_len(core->rx_pkt) + 1771 e1000x_fcs_len(core->mac); 1772 1773 if (e1000e_has_rxbufs(core, rxr.i, total_size)) { 1774 e1000e_rx_fix_l4_csum(core, core->rx_pkt); 1775 1776 e1000e_write_packet_to_guest(core, core->rx_pkt, &rxr, &rss_info); 1777 1778 retval = orig_size; 1779 1780 /* Perform small receive detection (RSRPD) */ 1781 if (total_size < core->mac[RSRPD]) { 1782 n |= E1000_ICS_SRPD; 1783 } 1784 1785 /* Perform ACK receive detection */ 1786 if (!(core->mac[RFCTL] & E1000_RFCTL_ACK_DIS) && 1787 (e1000e_is_tcp_ack(core, core->rx_pkt))) { 1788 n |= E1000_ICS_ACK; 1789 } 1790 1791 /* Check if receive descriptor minimum threshold hit */ 1792 rdmts_hit = e1000e_rx_descr_threshold_hit(core, rxr.i); 1793 n |= e1000e_rx_wb_interrupt_cause(core, rxr.i->idx, rdmts_hit); 1794 1795 trace_e1000e_rx_written_to_guest(rxr.i->idx); 1796 } else { 1797 n |= E1000_ICS_RXO; 1798 retval = 0; 1799 1800 trace_e1000e_rx_not_written_to_guest(rxr.i->idx); 1801 } 1802 1803 if (!e1000e_intrmgr_delay_rx_causes(core, &n)) { 1804 trace_e1000e_rx_interrupt_set(n); 1805 e1000e_set_interrupt_cause(core, n); 1806 } else { 1807 trace_e1000e_rx_interrupt_delayed(n); 1808 } 1809 1810 return retval; 1811 } 1812 1813 static inline bool 1814 e1000e_have_autoneg(E1000ECore *core) 1815 { 1816 return core->phy[0][MII_BMCR] & MII_BMCR_AUTOEN; 1817 } 1818 1819 static void e1000e_update_flowctl_status(E1000ECore *core) 1820 { 1821 if (e1000e_have_autoneg(core) && 1822 core->phy[0][MII_BMSR] & MII_BMSR_AN_COMP) { 1823 trace_e1000e_link_autoneg_flowctl(true); 1824 core->mac[CTRL] |= E1000_CTRL_TFCE | E1000_CTRL_RFCE; 1825 } else { 1826 trace_e1000e_link_autoneg_flowctl(false); 1827 } 1828 } 1829 1830 static inline void 1831 e1000e_link_down(E1000ECore *core) 1832 { 1833 e1000x_update_regs_on_link_down(core->mac, core->phy[0]); 1834 e1000e_update_flowctl_status(core); 1835 } 1836 1837 static inline void 1838 e1000e_set_phy_ctrl(E1000ECore *core, int index, uint16_t val) 1839 { 1840 /* bits 0-5 reserved; MII_BMCR_[ANRESTART,RESET] are self clearing */ 1841 core->phy[0][MII_BMCR] = val & ~(0x3f | 1842 MII_BMCR_RESET | 1843 MII_BMCR_ANRESTART); 1844 1845 if ((val & MII_BMCR_ANRESTART) && 1846 e1000e_have_autoneg(core)) { 1847 e1000x_restart_autoneg(core->mac, core->phy[0], core->autoneg_timer); 1848 } 1849 } 1850 1851 static void 1852 e1000e_set_phy_oem_bits(E1000ECore *core, int index, uint16_t val) 1853 { 1854 core->phy[0][PHY_OEM_BITS] = val & ~BIT(10); 1855 1856 if (val & BIT(10)) { 1857 e1000x_restart_autoneg(core->mac, core->phy[0], core->autoneg_timer); 1858 } 1859 } 1860 1861 static void 1862 e1000e_set_phy_page(E1000ECore *core, int index, uint16_t val) 1863 { 1864 core->phy[0][PHY_PAGE] = val & PHY_PAGE_RW_MASK; 1865 } 1866 1867 void 1868 e1000e_core_set_link_status(E1000ECore *core) 1869 { 1870 NetClientState *nc = qemu_get_queue(core->owner_nic); 1871 uint32_t old_status = core->mac[STATUS]; 1872 1873 trace_e1000e_link_status_changed(nc->link_down ? false : true); 1874 1875 if (nc->link_down) { 1876 e1000x_update_regs_on_link_down(core->mac, core->phy[0]); 1877 } else { 1878 if (e1000e_have_autoneg(core) && 1879 !(core->phy[0][MII_BMSR] & MII_BMSR_AN_COMP)) { 1880 e1000x_restart_autoneg(core->mac, core->phy[0], 1881 core->autoneg_timer); 1882 } else { 1883 e1000x_update_regs_on_link_up(core->mac, core->phy[0]); 1884 e1000e_start_recv(core); 1885 } 1886 } 1887 1888 if (core->mac[STATUS] != old_status) { 1889 e1000e_set_interrupt_cause(core, E1000_ICR_LSC); 1890 } 1891 } 1892 1893 static void 1894 e1000e_set_ctrl(E1000ECore *core, int index, uint32_t val) 1895 { 1896 trace_e1000e_core_ctrl_write(index, val); 1897 1898 /* RST is self clearing */ 1899 core->mac[CTRL] = val & ~E1000_CTRL_RST; 1900 core->mac[CTRL_DUP] = core->mac[CTRL]; 1901 1902 trace_e1000e_link_set_params( 1903 !!(val & E1000_CTRL_ASDE), 1904 (val & E1000_CTRL_SPD_SEL) >> E1000_CTRL_SPD_SHIFT, 1905 !!(val & E1000_CTRL_FRCSPD), 1906 !!(val & E1000_CTRL_FRCDPX), 1907 !!(val & E1000_CTRL_RFCE), 1908 !!(val & E1000_CTRL_TFCE)); 1909 1910 if (val & E1000_CTRL_RST) { 1911 trace_e1000e_core_ctrl_sw_reset(); 1912 e1000e_reset(core, true); 1913 } 1914 1915 if (val & E1000_CTRL_PHY_RST) { 1916 trace_e1000e_core_ctrl_phy_reset(); 1917 core->mac[STATUS] |= E1000_STATUS_PHYRA; 1918 } 1919 } 1920 1921 static void 1922 e1000e_set_rfctl(E1000ECore *core, int index, uint32_t val) 1923 { 1924 trace_e1000e_rx_set_rfctl(val); 1925 1926 if (!(val & E1000_RFCTL_ISCSI_DIS)) { 1927 trace_e1000e_wrn_iscsi_filtering_not_supported(); 1928 } 1929 1930 if (!(val & E1000_RFCTL_NFSW_DIS)) { 1931 trace_e1000e_wrn_nfsw_filtering_not_supported(); 1932 } 1933 1934 if (!(val & E1000_RFCTL_NFSR_DIS)) { 1935 trace_e1000e_wrn_nfsr_filtering_not_supported(); 1936 } 1937 1938 core->mac[RFCTL] = val; 1939 } 1940 1941 static void 1942 e1000e_calc_per_desc_buf_size(E1000ECore *core) 1943 { 1944 int i; 1945 core->rx_desc_buf_size = 0; 1946 1947 for (i = 0; i < ARRAY_SIZE(core->rxbuf_sizes); i++) { 1948 core->rx_desc_buf_size += core->rxbuf_sizes[i]; 1949 } 1950 } 1951 1952 static void 1953 e1000e_parse_rxbufsize(E1000ECore *core) 1954 { 1955 uint32_t rctl = core->mac[RCTL]; 1956 1957 memset(core->rxbuf_sizes, 0, sizeof(core->rxbuf_sizes)); 1958 1959 if (rctl & E1000_RCTL_DTYP_MASK) { 1960 uint32_t bsize; 1961 1962 bsize = core->mac[PSRCTL] & E1000_PSRCTL_BSIZE0_MASK; 1963 core->rxbuf_sizes[0] = (bsize >> E1000_PSRCTL_BSIZE0_SHIFT) * 128; 1964 1965 bsize = core->mac[PSRCTL] & E1000_PSRCTL_BSIZE1_MASK; 1966 core->rxbuf_sizes[1] = (bsize >> E1000_PSRCTL_BSIZE1_SHIFT) * 1024; 1967 1968 bsize = core->mac[PSRCTL] & E1000_PSRCTL_BSIZE2_MASK; 1969 core->rxbuf_sizes[2] = (bsize >> E1000_PSRCTL_BSIZE2_SHIFT) * 1024; 1970 1971 bsize = core->mac[PSRCTL] & E1000_PSRCTL_BSIZE3_MASK; 1972 core->rxbuf_sizes[3] = (bsize >> E1000_PSRCTL_BSIZE3_SHIFT) * 1024; 1973 } else if (rctl & E1000_RCTL_FLXBUF_MASK) { 1974 int flxbuf = rctl & E1000_RCTL_FLXBUF_MASK; 1975 core->rxbuf_sizes[0] = (flxbuf >> E1000_RCTL_FLXBUF_SHIFT) * 1024; 1976 } else { 1977 core->rxbuf_sizes[0] = e1000x_rxbufsize(rctl); 1978 } 1979 1980 trace_e1000e_rx_desc_buff_sizes(core->rxbuf_sizes[0], core->rxbuf_sizes[1], 1981 core->rxbuf_sizes[2], core->rxbuf_sizes[3]); 1982 1983 e1000e_calc_per_desc_buf_size(core); 1984 } 1985 1986 static void 1987 e1000e_calc_rxdesclen(E1000ECore *core) 1988 { 1989 if (e1000e_rx_use_legacy_descriptor(core)) { 1990 core->rx_desc_len = sizeof(struct e1000_rx_desc); 1991 } else { 1992 if (core->mac[RCTL] & E1000_RCTL_DTYP_PS) { 1993 core->rx_desc_len = sizeof(union e1000_rx_desc_packet_split); 1994 } else { 1995 core->rx_desc_len = sizeof(union e1000_rx_desc_extended); 1996 } 1997 } 1998 trace_e1000e_rx_desc_len(core->rx_desc_len); 1999 } 2000 2001 static void 2002 e1000e_set_rx_control(E1000ECore *core, int index, uint32_t val) 2003 { 2004 core->mac[RCTL] = val; 2005 trace_e1000e_rx_set_rctl(core->mac[RCTL]); 2006 2007 if (val & E1000_RCTL_EN) { 2008 e1000e_parse_rxbufsize(core); 2009 e1000e_calc_rxdesclen(core); 2010 core->rxbuf_min_shift = ((val / E1000_RCTL_RDMTS_QUAT) & 3) + 1 + 2011 E1000_RING_DESC_LEN_SHIFT; 2012 2013 e1000e_start_recv(core); 2014 } 2015 } 2016 2017 static 2018 void(*e1000e_phyreg_writeops[E1000E_PHY_PAGES][E1000E_PHY_PAGE_SIZE]) 2019 (E1000ECore *, int, uint16_t) = { 2020 [0] = { 2021 [MII_BMCR] = e1000e_set_phy_ctrl, 2022 [PHY_PAGE] = e1000e_set_phy_page, 2023 [PHY_OEM_BITS] = e1000e_set_phy_oem_bits 2024 } 2025 }; 2026 2027 static inline void 2028 e1000e_clear_ims_bits(E1000ECore *core, uint32_t bits) 2029 { 2030 trace_e1000e_irq_clear_ims(bits, core->mac[IMS], core->mac[IMS] & ~bits); 2031 core->mac[IMS] &= ~bits; 2032 } 2033 2034 static inline bool 2035 e1000e_postpone_interrupt(E1000IntrDelayTimer *timer) 2036 { 2037 if (timer->running) { 2038 trace_e1000e_irq_postponed_by_xitr(timer->delay_reg << 2); 2039 2040 return true; 2041 } 2042 2043 if (timer->core->mac[timer->delay_reg] != 0) { 2044 e1000e_intrmgr_rearm_timer(timer); 2045 } 2046 2047 return false; 2048 } 2049 2050 static inline bool 2051 e1000e_itr_should_postpone(E1000ECore *core) 2052 { 2053 return e1000e_postpone_interrupt(&core->itr); 2054 } 2055 2056 static inline bool 2057 e1000e_eitr_should_postpone(E1000ECore *core, int idx) 2058 { 2059 return e1000e_postpone_interrupt(&core->eitr[idx]); 2060 } 2061 2062 static void 2063 e1000e_msix_notify_one(E1000ECore *core, uint32_t cause, uint32_t int_cfg) 2064 { 2065 uint32_t effective_eiac; 2066 2067 if (E1000_IVAR_ENTRY_VALID(int_cfg)) { 2068 uint32_t vec = E1000_IVAR_ENTRY_VEC(int_cfg); 2069 if (vec < E1000E_MSIX_VEC_NUM) { 2070 if (!e1000e_eitr_should_postpone(core, vec)) { 2071 trace_e1000e_irq_msix_notify_vec(vec); 2072 msix_notify(core->owner, vec); 2073 } 2074 } else { 2075 trace_e1000e_wrn_msix_vec_wrong(cause, int_cfg); 2076 } 2077 } else { 2078 trace_e1000e_wrn_msix_invalid(cause, int_cfg); 2079 } 2080 2081 if (core->mac[CTRL_EXT] & E1000_CTRL_EXT_EIAME) { 2082 trace_e1000e_irq_iam_clear_eiame(core->mac[IAM], cause); 2083 core->mac[IAM] &= ~cause; 2084 } 2085 2086 trace_e1000e_irq_icr_clear_eiac(core->mac[ICR], core->mac[EIAC]); 2087 2088 effective_eiac = core->mac[EIAC] & cause; 2089 2090 core->mac[ICR] &= ~effective_eiac; 2091 core->msi_causes_pending &= ~effective_eiac; 2092 2093 if (!(core->mac[CTRL_EXT] & E1000_CTRL_EXT_IAME)) { 2094 core->mac[IMS] &= ~effective_eiac; 2095 } 2096 } 2097 2098 static void 2099 e1000e_msix_notify(E1000ECore *core, uint32_t causes) 2100 { 2101 if (causes & E1000_ICR_RXQ0) { 2102 e1000e_msix_notify_one(core, E1000_ICR_RXQ0, 2103 E1000_IVAR_RXQ0(core->mac[IVAR])); 2104 } 2105 2106 if (causes & E1000_ICR_RXQ1) { 2107 e1000e_msix_notify_one(core, E1000_ICR_RXQ1, 2108 E1000_IVAR_RXQ1(core->mac[IVAR])); 2109 } 2110 2111 if (causes & E1000_ICR_TXQ0) { 2112 e1000e_msix_notify_one(core, E1000_ICR_TXQ0, 2113 E1000_IVAR_TXQ0(core->mac[IVAR])); 2114 } 2115 2116 if (causes & E1000_ICR_TXQ1) { 2117 e1000e_msix_notify_one(core, E1000_ICR_TXQ1, 2118 E1000_IVAR_TXQ1(core->mac[IVAR])); 2119 } 2120 2121 if (causes & E1000_ICR_OTHER) { 2122 e1000e_msix_notify_one(core, E1000_ICR_OTHER, 2123 E1000_IVAR_OTHER(core->mac[IVAR])); 2124 } 2125 } 2126 2127 static void 2128 e1000e_msix_clear_one(E1000ECore *core, uint32_t cause, uint32_t int_cfg) 2129 { 2130 if (E1000_IVAR_ENTRY_VALID(int_cfg)) { 2131 uint32_t vec = E1000_IVAR_ENTRY_VEC(int_cfg); 2132 if (vec < E1000E_MSIX_VEC_NUM) { 2133 trace_e1000e_irq_msix_pending_clearing(cause, int_cfg, vec); 2134 msix_clr_pending(core->owner, vec); 2135 } else { 2136 trace_e1000e_wrn_msix_vec_wrong(cause, int_cfg); 2137 } 2138 } else { 2139 trace_e1000e_wrn_msix_invalid(cause, int_cfg); 2140 } 2141 } 2142 2143 static void 2144 e1000e_msix_clear(E1000ECore *core, uint32_t causes) 2145 { 2146 if (causes & E1000_ICR_RXQ0) { 2147 e1000e_msix_clear_one(core, E1000_ICR_RXQ0, 2148 E1000_IVAR_RXQ0(core->mac[IVAR])); 2149 } 2150 2151 if (causes & E1000_ICR_RXQ1) { 2152 e1000e_msix_clear_one(core, E1000_ICR_RXQ1, 2153 E1000_IVAR_RXQ1(core->mac[IVAR])); 2154 } 2155 2156 if (causes & E1000_ICR_TXQ0) { 2157 e1000e_msix_clear_one(core, E1000_ICR_TXQ0, 2158 E1000_IVAR_TXQ0(core->mac[IVAR])); 2159 } 2160 2161 if (causes & E1000_ICR_TXQ1) { 2162 e1000e_msix_clear_one(core, E1000_ICR_TXQ1, 2163 E1000_IVAR_TXQ1(core->mac[IVAR])); 2164 } 2165 2166 if (causes & E1000_ICR_OTHER) { 2167 e1000e_msix_clear_one(core, E1000_ICR_OTHER, 2168 E1000_IVAR_OTHER(core->mac[IVAR])); 2169 } 2170 } 2171 2172 static inline void 2173 e1000e_fix_icr_asserted(E1000ECore *core) 2174 { 2175 core->mac[ICR] &= ~E1000_ICR_ASSERTED; 2176 if (core->mac[ICR]) { 2177 core->mac[ICR] |= E1000_ICR_ASSERTED; 2178 } 2179 2180 trace_e1000e_irq_fix_icr_asserted(core->mac[ICR]); 2181 } 2182 2183 static void 2184 e1000e_send_msi(E1000ECore *core, bool msix) 2185 { 2186 uint32_t causes = core->mac[ICR] & core->mac[IMS] & ~E1000_ICR_ASSERTED; 2187 2188 core->msi_causes_pending &= causes; 2189 causes ^= core->msi_causes_pending; 2190 if (causes == 0) { 2191 return; 2192 } 2193 core->msi_causes_pending |= causes; 2194 2195 if (msix) { 2196 e1000e_msix_notify(core, causes); 2197 } else { 2198 if (!e1000e_itr_should_postpone(core)) { 2199 trace_e1000e_irq_msi_notify(causes); 2200 msi_notify(core->owner, 0); 2201 } 2202 } 2203 } 2204 2205 static void 2206 e1000e_update_interrupt_state(E1000ECore *core) 2207 { 2208 bool interrupts_pending; 2209 bool is_msix = msix_enabled(core->owner); 2210 2211 /* Set ICR[OTHER] for MSI-X */ 2212 if (is_msix) { 2213 if (core->mac[ICR] & E1000_ICR_OTHER_CAUSES) { 2214 core->mac[ICR] |= E1000_ICR_OTHER; 2215 trace_e1000e_irq_add_msi_other(core->mac[ICR]); 2216 } 2217 } 2218 2219 e1000e_fix_icr_asserted(core); 2220 2221 /* 2222 * Make sure ICR and ICS registers have the same value. 2223 * The spec says that the ICS register is write-only. However in practice, 2224 * on real hardware ICS is readable, and for reads it has the same value as 2225 * ICR (except that ICS does not have the clear on read behaviour of ICR). 2226 * 2227 * The VxWorks PRO/1000 driver uses this behaviour. 2228 */ 2229 core->mac[ICS] = core->mac[ICR]; 2230 2231 interrupts_pending = (core->mac[IMS] & core->mac[ICR]) ? true : false; 2232 if (!interrupts_pending) { 2233 core->msi_causes_pending = 0; 2234 } 2235 2236 trace_e1000e_irq_pending_interrupts(core->mac[ICR] & core->mac[IMS], 2237 core->mac[ICR], core->mac[IMS]); 2238 2239 if (is_msix || msi_enabled(core->owner)) { 2240 if (interrupts_pending) { 2241 e1000e_send_msi(core, is_msix); 2242 } 2243 } else { 2244 if (interrupts_pending) { 2245 if (!e1000e_itr_should_postpone(core)) { 2246 e1000e_raise_legacy_irq(core); 2247 } 2248 } else { 2249 e1000e_lower_legacy_irq(core); 2250 } 2251 } 2252 } 2253 2254 static void 2255 e1000e_set_interrupt_cause(E1000ECore *core, uint32_t val) 2256 { 2257 trace_e1000e_irq_set_cause_entry(val, core->mac[ICR]); 2258 2259 val |= e1000e_intmgr_collect_delayed_causes(core); 2260 core->mac[ICR] |= val; 2261 2262 trace_e1000e_irq_set_cause_exit(val, core->mac[ICR]); 2263 2264 e1000e_update_interrupt_state(core); 2265 } 2266 2267 static inline void 2268 e1000e_autoneg_timer(void *opaque) 2269 { 2270 E1000ECore *core = opaque; 2271 if (!qemu_get_queue(core->owner_nic)->link_down) { 2272 e1000x_update_regs_on_autoneg_done(core->mac, core->phy[0]); 2273 e1000e_start_recv(core); 2274 2275 e1000e_update_flowctl_status(core); 2276 /* signal link status change to the guest */ 2277 e1000e_set_interrupt_cause(core, E1000_ICR_LSC); 2278 } 2279 } 2280 2281 static inline uint16_t 2282 e1000e_get_reg_index_with_offset(const uint16_t *mac_reg_access, hwaddr addr) 2283 { 2284 uint16_t index = (addr & 0x1ffff) >> 2; 2285 return index + (mac_reg_access[index] & 0xfffe); 2286 } 2287 2288 static const char e1000e_phy_regcap[E1000E_PHY_PAGES][0x20] = { 2289 [0] = { 2290 [MII_BMCR] = PHY_ANYPAGE | PHY_RW, 2291 [MII_BMSR] = PHY_ANYPAGE | PHY_R, 2292 [MII_PHYID1] = PHY_ANYPAGE | PHY_R, 2293 [MII_PHYID2] = PHY_ANYPAGE | PHY_R, 2294 [MII_ANAR] = PHY_ANYPAGE | PHY_RW, 2295 [MII_ANLPAR] = PHY_ANYPAGE | PHY_R, 2296 [MII_ANER] = PHY_ANYPAGE | PHY_R, 2297 [MII_ANNP] = PHY_ANYPAGE | PHY_RW, 2298 [MII_ANLPRNP] = PHY_ANYPAGE | PHY_R, 2299 [MII_CTRL1000] = PHY_ANYPAGE | PHY_RW, 2300 [MII_STAT1000] = PHY_ANYPAGE | PHY_R, 2301 [MII_EXTSTAT] = PHY_ANYPAGE | PHY_R, 2302 [PHY_PAGE] = PHY_ANYPAGE | PHY_RW, 2303 2304 [PHY_COPPER_CTRL1] = PHY_RW, 2305 [PHY_COPPER_STAT1] = PHY_R, 2306 [PHY_COPPER_CTRL3] = PHY_RW, 2307 [PHY_RX_ERR_CNTR] = PHY_R, 2308 [PHY_OEM_BITS] = PHY_RW, 2309 [PHY_BIAS_1] = PHY_RW, 2310 [PHY_BIAS_2] = PHY_RW, 2311 [PHY_COPPER_INT_ENABLE] = PHY_RW, 2312 [PHY_COPPER_STAT2] = PHY_R, 2313 [PHY_COPPER_CTRL2] = PHY_RW 2314 }, 2315 [2] = { 2316 [PHY_MAC_CTRL1] = PHY_RW, 2317 [PHY_MAC_INT_ENABLE] = PHY_RW, 2318 [PHY_MAC_STAT] = PHY_R, 2319 [PHY_MAC_CTRL2] = PHY_RW 2320 }, 2321 [3] = { 2322 [PHY_LED_03_FUNC_CTRL1] = PHY_RW, 2323 [PHY_LED_03_POL_CTRL] = PHY_RW, 2324 [PHY_LED_TIMER_CTRL] = PHY_RW, 2325 [PHY_LED_45_CTRL] = PHY_RW 2326 }, 2327 [5] = { 2328 [PHY_1000T_SKEW] = PHY_R, 2329 [PHY_1000T_SWAP] = PHY_R 2330 }, 2331 [6] = { 2332 [PHY_CRC_COUNTERS] = PHY_R 2333 } 2334 }; 2335 2336 static bool 2337 e1000e_phy_reg_check_cap(E1000ECore *core, uint32_t addr, 2338 char cap, uint8_t *page) 2339 { 2340 *page = 2341 (e1000e_phy_regcap[0][addr] & PHY_ANYPAGE) ? 0 2342 : core->phy[0][PHY_PAGE]; 2343 2344 if (*page >= E1000E_PHY_PAGES) { 2345 return false; 2346 } 2347 2348 return e1000e_phy_regcap[*page][addr] & cap; 2349 } 2350 2351 static void 2352 e1000e_phy_reg_write(E1000ECore *core, uint8_t page, 2353 uint32_t addr, uint16_t data) 2354 { 2355 assert(page < E1000E_PHY_PAGES); 2356 assert(addr < E1000E_PHY_PAGE_SIZE); 2357 2358 if (e1000e_phyreg_writeops[page][addr]) { 2359 e1000e_phyreg_writeops[page][addr](core, addr, data); 2360 } else { 2361 core->phy[page][addr] = data; 2362 } 2363 } 2364 2365 static void 2366 e1000e_set_mdic(E1000ECore *core, int index, uint32_t val) 2367 { 2368 uint32_t data = val & E1000_MDIC_DATA_MASK; 2369 uint32_t addr = ((val & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT); 2370 uint8_t page; 2371 2372 if ((val & E1000_MDIC_PHY_MASK) >> E1000_MDIC_PHY_SHIFT != 1) { /* phy # */ 2373 val = core->mac[MDIC] | E1000_MDIC_ERROR; 2374 } else if (val & E1000_MDIC_OP_READ) { 2375 if (!e1000e_phy_reg_check_cap(core, addr, PHY_R, &page)) { 2376 trace_e1000e_core_mdic_read_unhandled(page, addr); 2377 val |= E1000_MDIC_ERROR; 2378 } else { 2379 val = (val ^ data) | core->phy[page][addr]; 2380 trace_e1000e_core_mdic_read(page, addr, val); 2381 } 2382 } else if (val & E1000_MDIC_OP_WRITE) { 2383 if (!e1000e_phy_reg_check_cap(core, addr, PHY_W, &page)) { 2384 trace_e1000e_core_mdic_write_unhandled(page, addr); 2385 val |= E1000_MDIC_ERROR; 2386 } else { 2387 trace_e1000e_core_mdic_write(page, addr, data); 2388 e1000e_phy_reg_write(core, page, addr, data); 2389 } 2390 } 2391 core->mac[MDIC] = val | E1000_MDIC_READY; 2392 2393 if (val & E1000_MDIC_INT_EN) { 2394 e1000e_set_interrupt_cause(core, E1000_ICR_MDAC); 2395 } 2396 } 2397 2398 static void 2399 e1000e_set_rdt(E1000ECore *core, int index, uint32_t val) 2400 { 2401 core->mac[index] = val & 0xffff; 2402 trace_e1000e_rx_set_rdt(e1000e_mq_queue_idx(RDT0, index), val); 2403 e1000e_start_recv(core); 2404 } 2405 2406 static void 2407 e1000e_set_status(E1000ECore *core, int index, uint32_t val) 2408 { 2409 if ((val & E1000_STATUS_PHYRA) == 0) { 2410 core->mac[index] &= ~E1000_STATUS_PHYRA; 2411 } 2412 } 2413 2414 static void 2415 e1000e_set_ctrlext(E1000ECore *core, int index, uint32_t val) 2416 { 2417 trace_e1000e_link_set_ext_params(!!(val & E1000_CTRL_EXT_ASDCHK), 2418 !!(val & E1000_CTRL_EXT_SPD_BYPS)); 2419 2420 /* Zero self-clearing bits */ 2421 val &= ~(E1000_CTRL_EXT_ASDCHK | E1000_CTRL_EXT_EE_RST); 2422 core->mac[CTRL_EXT] = val; 2423 } 2424 2425 static void 2426 e1000e_set_pbaclr(E1000ECore *core, int index, uint32_t val) 2427 { 2428 int i; 2429 2430 core->mac[PBACLR] = val & E1000_PBACLR_VALID_MASK; 2431 2432 if (!msix_enabled(core->owner)) { 2433 return; 2434 } 2435 2436 for (i = 0; i < E1000E_MSIX_VEC_NUM; i++) { 2437 if (core->mac[PBACLR] & BIT(i)) { 2438 msix_clr_pending(core->owner, i); 2439 } 2440 } 2441 } 2442 2443 static void 2444 e1000e_set_fcrth(E1000ECore *core, int index, uint32_t val) 2445 { 2446 core->mac[FCRTH] = val & 0xFFF8; 2447 } 2448 2449 static void 2450 e1000e_set_fcrtl(E1000ECore *core, int index, uint32_t val) 2451 { 2452 core->mac[FCRTL] = val & 0x8000FFF8; 2453 } 2454 2455 #define E1000E_LOW_BITS_SET_FUNC(num) \ 2456 static void \ 2457 e1000e_set_##num##bit(E1000ECore *core, int index, uint32_t val) \ 2458 { \ 2459 core->mac[index] = val & (BIT(num) - 1); \ 2460 } 2461 2462 E1000E_LOW_BITS_SET_FUNC(4) 2463 E1000E_LOW_BITS_SET_FUNC(6) 2464 E1000E_LOW_BITS_SET_FUNC(11) 2465 E1000E_LOW_BITS_SET_FUNC(12) 2466 E1000E_LOW_BITS_SET_FUNC(13) 2467 E1000E_LOW_BITS_SET_FUNC(16) 2468 2469 static void 2470 e1000e_set_vet(E1000ECore *core, int index, uint32_t val) 2471 { 2472 core->mac[VET] = val & 0xffff; 2473 trace_e1000e_vlan_vet(core->mac[VET]); 2474 } 2475 2476 static void 2477 e1000e_set_dlen(E1000ECore *core, int index, uint32_t val) 2478 { 2479 core->mac[index] = val & E1000_XDLEN_MASK; 2480 } 2481 2482 static void 2483 e1000e_set_dbal(E1000ECore *core, int index, uint32_t val) 2484 { 2485 core->mac[index] = val & E1000_XDBAL_MASK; 2486 } 2487 2488 static void 2489 e1000e_set_tctl(E1000ECore *core, int index, uint32_t val) 2490 { 2491 E1000E_TxRing txr; 2492 core->mac[index] = val; 2493 2494 if (core->mac[TARC0] & E1000_TARC_ENABLE) { 2495 e1000e_tx_ring_init(core, &txr, 0); 2496 e1000e_start_xmit(core, &txr); 2497 } 2498 2499 if (core->mac[TARC1] & E1000_TARC_ENABLE) { 2500 e1000e_tx_ring_init(core, &txr, 1); 2501 e1000e_start_xmit(core, &txr); 2502 } 2503 } 2504 2505 static void 2506 e1000e_set_tdt(E1000ECore *core, int index, uint32_t val) 2507 { 2508 E1000E_TxRing txr; 2509 int qidx = e1000e_mq_queue_idx(TDT, index); 2510 uint32_t tarc_reg = (qidx == 0) ? TARC0 : TARC1; 2511 2512 core->mac[index] = val & 0xffff; 2513 2514 if (core->mac[tarc_reg] & E1000_TARC_ENABLE) { 2515 e1000e_tx_ring_init(core, &txr, qidx); 2516 e1000e_start_xmit(core, &txr); 2517 } 2518 } 2519 2520 static void 2521 e1000e_set_ics(E1000ECore *core, int index, uint32_t val) 2522 { 2523 trace_e1000e_irq_write_ics(val); 2524 e1000e_set_interrupt_cause(core, val); 2525 } 2526 2527 static void 2528 e1000e_set_icr(E1000ECore *core, int index, uint32_t val) 2529 { 2530 uint32_t icr = 0; 2531 if ((core->mac[ICR] & E1000_ICR_ASSERTED) && 2532 (core->mac[CTRL_EXT] & E1000_CTRL_EXT_IAME)) { 2533 trace_e1000e_irq_icr_process_iame(); 2534 e1000e_clear_ims_bits(core, core->mac[IAM]); 2535 } 2536 2537 icr = core->mac[ICR] & ~val; 2538 /* 2539 * Windows driver expects that the "receive overrun" bit and other 2540 * ones to be cleared when the "Other" bit (#24) is cleared. 2541 */ 2542 icr = (val & E1000_ICR_OTHER) ? (icr & ~E1000_ICR_OTHER_CAUSES) : icr; 2543 trace_e1000e_irq_icr_write(val, core->mac[ICR], icr); 2544 core->mac[ICR] = icr; 2545 e1000e_update_interrupt_state(core); 2546 } 2547 2548 static void 2549 e1000e_set_imc(E1000ECore *core, int index, uint32_t val) 2550 { 2551 trace_e1000e_irq_ims_clear_set_imc(val); 2552 e1000e_clear_ims_bits(core, val); 2553 e1000e_update_interrupt_state(core); 2554 } 2555 2556 static void 2557 e1000e_set_ims(E1000ECore *core, int index, uint32_t val) 2558 { 2559 static const uint32_t ims_ext_mask = 2560 E1000_IMS_RXQ0 | E1000_IMS_RXQ1 | 2561 E1000_IMS_TXQ0 | E1000_IMS_TXQ1 | 2562 E1000_IMS_OTHER; 2563 2564 static const uint32_t ims_valid_mask = 2565 E1000_IMS_TXDW | E1000_IMS_TXQE | E1000_IMS_LSC | 2566 E1000_IMS_RXDMT0 | E1000_IMS_RXO | E1000_IMS_RXT0 | 2567 E1000_IMS_MDAC | E1000_IMS_TXD_LOW | E1000_IMS_SRPD | 2568 E1000_IMS_ACK | E1000_IMS_MNG | E1000_IMS_RXQ0 | 2569 E1000_IMS_RXQ1 | E1000_IMS_TXQ0 | E1000_IMS_TXQ1 | 2570 E1000_IMS_OTHER; 2571 2572 uint32_t valid_val = val & ims_valid_mask; 2573 2574 trace_e1000e_irq_set_ims(val, core->mac[IMS], core->mac[IMS] | valid_val); 2575 core->mac[IMS] |= valid_val; 2576 2577 if ((valid_val & ims_ext_mask) && 2578 (core->mac[CTRL_EXT] & E1000_CTRL_EXT_PBA_CLR) && 2579 msix_enabled(core->owner)) { 2580 e1000e_msix_clear(core, valid_val); 2581 } 2582 2583 if ((valid_val == ims_valid_mask) && 2584 (core->mac[CTRL_EXT] & E1000_CTRL_EXT_INT_TIMERS_CLEAR_ENA)) { 2585 trace_e1000e_irq_fire_all_timers(val); 2586 e1000e_intrmgr_fire_all_timers(core); 2587 } 2588 2589 e1000e_update_interrupt_state(core); 2590 } 2591 2592 static void 2593 e1000e_set_rdtr(E1000ECore *core, int index, uint32_t val) 2594 { 2595 e1000e_set_16bit(core, index, val); 2596 2597 if ((val & E1000_RDTR_FPD) && (core->rdtr.running)) { 2598 trace_e1000e_irq_rdtr_fpd_running(); 2599 e1000e_intrmgr_fire_delayed_interrupts(core); 2600 } else { 2601 trace_e1000e_irq_rdtr_fpd_not_running(); 2602 } 2603 } 2604 2605 static void 2606 e1000e_set_tidv(E1000ECore *core, int index, uint32_t val) 2607 { 2608 e1000e_set_16bit(core, index, val); 2609 2610 if ((val & E1000_TIDV_FPD) && (core->tidv.running)) { 2611 trace_e1000e_irq_tidv_fpd_running(); 2612 e1000e_intrmgr_fire_delayed_interrupts(core); 2613 } else { 2614 trace_e1000e_irq_tidv_fpd_not_running(); 2615 } 2616 } 2617 2618 static uint32_t 2619 e1000e_mac_readreg(E1000ECore *core, int index) 2620 { 2621 return core->mac[index]; 2622 } 2623 2624 static uint32_t 2625 e1000e_mac_ics_read(E1000ECore *core, int index) 2626 { 2627 trace_e1000e_irq_read_ics(core->mac[ICS]); 2628 return core->mac[ICS]; 2629 } 2630 2631 static uint32_t 2632 e1000e_mac_ims_read(E1000ECore *core, int index) 2633 { 2634 trace_e1000e_irq_read_ims(core->mac[IMS]); 2635 return core->mac[IMS]; 2636 } 2637 2638 static uint32_t 2639 e1000e_mac_swsm_read(E1000ECore *core, int index) 2640 { 2641 uint32_t val = core->mac[SWSM]; 2642 core->mac[SWSM] = val | E1000_SWSM_SMBI; 2643 return val; 2644 } 2645 2646 static uint32_t 2647 e1000e_mac_itr_read(E1000ECore *core, int index) 2648 { 2649 return core->itr_guest_value; 2650 } 2651 2652 static uint32_t 2653 e1000e_mac_eitr_read(E1000ECore *core, int index) 2654 { 2655 return core->eitr_guest_value[index - EITR]; 2656 } 2657 2658 static uint32_t 2659 e1000e_mac_icr_read(E1000ECore *core, int index) 2660 { 2661 uint32_t ret = core->mac[ICR]; 2662 trace_e1000e_irq_icr_read_entry(ret); 2663 2664 if (core->mac[IMS] == 0) { 2665 trace_e1000e_irq_icr_clear_zero_ims(); 2666 core->mac[ICR] = 0; 2667 } 2668 2669 if (!msix_enabled(core->owner)) { 2670 trace_e1000e_irq_icr_clear_nonmsix_icr_read(); 2671 core->mac[ICR] = 0; 2672 } 2673 2674 if ((core->mac[ICR] & E1000_ICR_ASSERTED) && 2675 (core->mac[CTRL_EXT] & E1000_CTRL_EXT_IAME)) { 2676 trace_e1000e_irq_icr_clear_iame(); 2677 core->mac[ICR] = 0; 2678 trace_e1000e_irq_icr_process_iame(); 2679 e1000e_clear_ims_bits(core, core->mac[IAM]); 2680 } 2681 2682 trace_e1000e_irq_icr_read_exit(core->mac[ICR]); 2683 e1000e_update_interrupt_state(core); 2684 return ret; 2685 } 2686 2687 static uint32_t 2688 e1000e_mac_read_clr4(E1000ECore *core, int index) 2689 { 2690 uint32_t ret = core->mac[index]; 2691 2692 core->mac[index] = 0; 2693 return ret; 2694 } 2695 2696 static uint32_t 2697 e1000e_mac_read_clr8(E1000ECore *core, int index) 2698 { 2699 uint32_t ret = core->mac[index]; 2700 2701 core->mac[index] = 0; 2702 core->mac[index - 1] = 0; 2703 return ret; 2704 } 2705 2706 static uint32_t 2707 e1000e_get_ctrl(E1000ECore *core, int index) 2708 { 2709 uint32_t val = core->mac[CTRL]; 2710 2711 trace_e1000e_link_read_params( 2712 !!(val & E1000_CTRL_ASDE), 2713 (val & E1000_CTRL_SPD_SEL) >> E1000_CTRL_SPD_SHIFT, 2714 !!(val & E1000_CTRL_FRCSPD), 2715 !!(val & E1000_CTRL_FRCDPX), 2716 !!(val & E1000_CTRL_RFCE), 2717 !!(val & E1000_CTRL_TFCE)); 2718 2719 return val; 2720 } 2721 2722 static uint32_t 2723 e1000e_get_status(E1000ECore *core, int index) 2724 { 2725 uint32_t res = core->mac[STATUS]; 2726 2727 if (!(core->mac[CTRL] & E1000_CTRL_GIO_MASTER_DISABLE)) { 2728 res |= E1000_STATUS_GIO_MASTER_ENABLE; 2729 } 2730 2731 if (core->mac[CTRL] & E1000_CTRL_FRCDPX) { 2732 res |= (core->mac[CTRL] & E1000_CTRL_FD) ? E1000_STATUS_FD : 0; 2733 } else { 2734 res |= E1000_STATUS_FD; 2735 } 2736 2737 if ((core->mac[CTRL] & E1000_CTRL_FRCSPD) || 2738 (core->mac[CTRL_EXT] & E1000_CTRL_EXT_SPD_BYPS)) { 2739 switch (core->mac[CTRL] & E1000_CTRL_SPD_SEL) { 2740 case E1000_CTRL_SPD_10: 2741 res |= E1000_STATUS_SPEED_10; 2742 break; 2743 case E1000_CTRL_SPD_100: 2744 res |= E1000_STATUS_SPEED_100; 2745 break; 2746 case E1000_CTRL_SPD_1000: 2747 default: 2748 res |= E1000_STATUS_SPEED_1000; 2749 break; 2750 } 2751 } else { 2752 res |= E1000_STATUS_SPEED_1000; 2753 } 2754 2755 trace_e1000e_link_status( 2756 !!(res & E1000_STATUS_LU), 2757 !!(res & E1000_STATUS_FD), 2758 (res & E1000_STATUS_SPEED_MASK) >> E1000_STATUS_SPEED_SHIFT, 2759 (res & E1000_STATUS_ASDV) >> E1000_STATUS_ASDV_SHIFT); 2760 2761 return res; 2762 } 2763 2764 static uint32_t 2765 e1000e_get_tarc(E1000ECore *core, int index) 2766 { 2767 return core->mac[index] & ((BIT(11) - 1) | 2768 BIT(27) | 2769 BIT(28) | 2770 BIT(29) | 2771 BIT(30)); 2772 } 2773 2774 static void 2775 e1000e_mac_writereg(E1000ECore *core, int index, uint32_t val) 2776 { 2777 core->mac[index] = val; 2778 } 2779 2780 static void 2781 e1000e_mac_setmacaddr(E1000ECore *core, int index, uint32_t val) 2782 { 2783 uint32_t macaddr[2]; 2784 2785 core->mac[index] = val; 2786 2787 macaddr[0] = cpu_to_le32(core->mac[RA]); 2788 macaddr[1] = cpu_to_le32(core->mac[RA + 1]); 2789 qemu_format_nic_info_str(qemu_get_queue(core->owner_nic), 2790 (uint8_t *) macaddr); 2791 2792 trace_e1000e_mac_set_sw(MAC_ARG(macaddr)); 2793 } 2794 2795 static void 2796 e1000e_set_eecd(E1000ECore *core, int index, uint32_t val) 2797 { 2798 static const uint32_t ro_bits = E1000_EECD_PRES | 2799 E1000_EECD_AUTO_RD | 2800 E1000_EECD_SIZE_EX_MASK; 2801 2802 core->mac[EECD] = (core->mac[EECD] & ro_bits) | (val & ~ro_bits); 2803 } 2804 2805 static void 2806 e1000e_set_eerd(E1000ECore *core, int index, uint32_t val) 2807 { 2808 uint32_t addr = (val >> E1000_EERW_ADDR_SHIFT) & E1000_EERW_ADDR_MASK; 2809 uint32_t flags = 0; 2810 uint32_t data = 0; 2811 2812 if ((addr < E1000E_EEPROM_SIZE) && (val & E1000_EERW_START)) { 2813 data = core->eeprom[addr]; 2814 flags = E1000_EERW_DONE; 2815 } 2816 2817 core->mac[EERD] = flags | 2818 (addr << E1000_EERW_ADDR_SHIFT) | 2819 (data << E1000_EERW_DATA_SHIFT); 2820 } 2821 2822 static void 2823 e1000e_set_eewr(E1000ECore *core, int index, uint32_t val) 2824 { 2825 uint32_t addr = (val >> E1000_EERW_ADDR_SHIFT) & E1000_EERW_ADDR_MASK; 2826 uint32_t data = (val >> E1000_EERW_DATA_SHIFT) & E1000_EERW_DATA_MASK; 2827 uint32_t flags = 0; 2828 2829 if ((addr < E1000E_EEPROM_SIZE) && (val & E1000_EERW_START)) { 2830 core->eeprom[addr] = data; 2831 flags = E1000_EERW_DONE; 2832 } 2833 2834 core->mac[EERD] = flags | 2835 (addr << E1000_EERW_ADDR_SHIFT) | 2836 (data << E1000_EERW_DATA_SHIFT); 2837 } 2838 2839 static void 2840 e1000e_set_rxdctl(E1000ECore *core, int index, uint32_t val) 2841 { 2842 core->mac[RXDCTL] = core->mac[RXDCTL1] = val; 2843 } 2844 2845 static void 2846 e1000e_set_itr(E1000ECore *core, int index, uint32_t val) 2847 { 2848 uint32_t interval = val & 0xffff; 2849 2850 trace_e1000e_irq_itr_set(val); 2851 2852 core->itr_guest_value = interval; 2853 core->mac[index] = MAX(interval, E1000E_MIN_XITR); 2854 } 2855 2856 static void 2857 e1000e_set_eitr(E1000ECore *core, int index, uint32_t val) 2858 { 2859 uint32_t interval = val & 0xffff; 2860 uint32_t eitr_num = index - EITR; 2861 2862 trace_e1000e_irq_eitr_set(eitr_num, val); 2863 2864 core->eitr_guest_value[eitr_num] = interval; 2865 core->mac[index] = MAX(interval, E1000E_MIN_XITR); 2866 } 2867 2868 static void 2869 e1000e_set_psrctl(E1000ECore *core, int index, uint32_t val) 2870 { 2871 if (core->mac[RCTL] & E1000_RCTL_DTYP_MASK) { 2872 2873 if ((val & E1000_PSRCTL_BSIZE0_MASK) == 0) { 2874 qemu_log_mask(LOG_GUEST_ERROR, 2875 "e1000e: PSRCTL.BSIZE0 cannot be zero"); 2876 return; 2877 } 2878 2879 if ((val & E1000_PSRCTL_BSIZE1_MASK) == 0) { 2880 qemu_log_mask(LOG_GUEST_ERROR, 2881 "e1000e: PSRCTL.BSIZE1 cannot be zero"); 2882 return; 2883 } 2884 } 2885 2886 core->mac[PSRCTL] = val; 2887 } 2888 2889 static void 2890 e1000e_update_rx_offloads(E1000ECore *core) 2891 { 2892 int cso_state = e1000e_rx_l4_cso_enabled(core); 2893 2894 trace_e1000e_rx_set_cso(cso_state); 2895 2896 if (core->has_vnet) { 2897 qemu_set_offload(qemu_get_queue(core->owner_nic)->peer, 2898 cso_state, 0, 0, 0, 0); 2899 } 2900 } 2901 2902 static void 2903 e1000e_set_rxcsum(E1000ECore *core, int index, uint32_t val) 2904 { 2905 core->mac[RXCSUM] = val; 2906 e1000e_update_rx_offloads(core); 2907 } 2908 2909 static void 2910 e1000e_set_gcr(E1000ECore *core, int index, uint32_t val) 2911 { 2912 uint32_t ro_bits = core->mac[GCR] & E1000_GCR_RO_BITS; 2913 core->mac[GCR] = (val & ~E1000_GCR_RO_BITS) | ro_bits; 2914 } 2915 2916 static uint32_t e1000e_get_systiml(E1000ECore *core, int index) 2917 { 2918 e1000x_timestamp(core->mac, core->timadj, SYSTIML, SYSTIMH); 2919 return core->mac[SYSTIML]; 2920 } 2921 2922 static uint32_t e1000e_get_rxsatrh(E1000ECore *core, int index) 2923 { 2924 core->mac[TSYNCRXCTL] &= ~E1000_TSYNCRXCTL_VALID; 2925 return core->mac[RXSATRH]; 2926 } 2927 2928 static uint32_t e1000e_get_txstmph(E1000ECore *core, int index) 2929 { 2930 core->mac[TSYNCTXCTL] &= ~E1000_TSYNCTXCTL_VALID; 2931 return core->mac[TXSTMPH]; 2932 } 2933 2934 static void e1000e_set_timinca(E1000ECore *core, int index, uint32_t val) 2935 { 2936 e1000x_set_timinca(core->mac, &core->timadj, val); 2937 } 2938 2939 static void e1000e_set_timadjh(E1000ECore *core, int index, uint32_t val) 2940 { 2941 core->mac[TIMADJH] = val; 2942 core->timadj += core->mac[TIMADJL] | ((int64_t)core->mac[TIMADJH] << 32); 2943 } 2944 2945 #define e1000e_getreg(x) [x] = e1000e_mac_readreg 2946 typedef uint32_t (*readops)(E1000ECore *, int); 2947 static const readops e1000e_macreg_readops[] = { 2948 e1000e_getreg(PBA), 2949 e1000e_getreg(WUFC), 2950 e1000e_getreg(MANC), 2951 e1000e_getreg(TOTL), 2952 e1000e_getreg(RDT0), 2953 e1000e_getreg(RDBAH0), 2954 e1000e_getreg(TDBAL1), 2955 e1000e_getreg(RDLEN0), 2956 e1000e_getreg(RDH1), 2957 e1000e_getreg(LATECOL), 2958 e1000e_getreg(SEQEC), 2959 e1000e_getreg(XONTXC), 2960 e1000e_getreg(AIT), 2961 e1000e_getreg(TDFH), 2962 e1000e_getreg(TDFT), 2963 e1000e_getreg(TDFHS), 2964 e1000e_getreg(TDFTS), 2965 e1000e_getreg(TDFPC), 2966 e1000e_getreg(WUS), 2967 e1000e_getreg(PBS), 2968 e1000e_getreg(RDFH), 2969 e1000e_getreg(RDFT), 2970 e1000e_getreg(RDFHS), 2971 e1000e_getreg(RDFTS), 2972 e1000e_getreg(RDFPC), 2973 e1000e_getreg(GORCL), 2974 e1000e_getreg(MGTPRC), 2975 e1000e_getreg(EERD), 2976 e1000e_getreg(EIAC), 2977 e1000e_getreg(PSRCTL), 2978 e1000e_getreg(MANC2H), 2979 e1000e_getreg(RXCSUM), 2980 e1000e_getreg(GSCL_3), 2981 e1000e_getreg(GSCN_2), 2982 e1000e_getreg(RSRPD), 2983 e1000e_getreg(RDBAL1), 2984 e1000e_getreg(FCAH), 2985 e1000e_getreg(FCRTH), 2986 e1000e_getreg(FLOP), 2987 e1000e_getreg(FLASHT), 2988 e1000e_getreg(RXSTMPH), 2989 e1000e_getreg(TXSTMPL), 2990 e1000e_getreg(TIMADJL), 2991 e1000e_getreg(TXDCTL), 2992 e1000e_getreg(RDH0), 2993 e1000e_getreg(TDT1), 2994 e1000e_getreg(TNCRS), 2995 e1000e_getreg(RJC), 2996 e1000e_getreg(IAM), 2997 e1000e_getreg(GSCL_2), 2998 e1000e_getreg(RDBAH1), 2999 e1000e_getreg(FLSWDATA), 3000 e1000e_getreg(TIPG), 3001 e1000e_getreg(FLMNGCTL), 3002 e1000e_getreg(FLMNGCNT), 3003 e1000e_getreg(TSYNCTXCTL), 3004 e1000e_getreg(EXTCNF_SIZE), 3005 e1000e_getreg(EXTCNF_CTRL), 3006 e1000e_getreg(EEMNGDATA), 3007 e1000e_getreg(CTRL_EXT), 3008 e1000e_getreg(SYSTIMH), 3009 e1000e_getreg(EEMNGCTL), 3010 e1000e_getreg(FLMNGDATA), 3011 e1000e_getreg(TSYNCRXCTL), 3012 e1000e_getreg(TDH), 3013 e1000e_getreg(LEDCTL), 3014 e1000e_getreg(TCTL), 3015 e1000e_getreg(TDBAL), 3016 e1000e_getreg(TDLEN), 3017 e1000e_getreg(TDH1), 3018 e1000e_getreg(RADV), 3019 e1000e_getreg(ECOL), 3020 e1000e_getreg(DC), 3021 e1000e_getreg(RLEC), 3022 e1000e_getreg(XOFFTXC), 3023 e1000e_getreg(RFC), 3024 e1000e_getreg(RNBC), 3025 e1000e_getreg(MGTPTC), 3026 e1000e_getreg(TIMINCA), 3027 e1000e_getreg(RXCFGL), 3028 e1000e_getreg(MFUTP01), 3029 e1000e_getreg(FACTPS), 3030 e1000e_getreg(GSCL_1), 3031 e1000e_getreg(GSCN_0), 3032 e1000e_getreg(GCR2), 3033 e1000e_getreg(RDT1), 3034 e1000e_getreg(PBACLR), 3035 e1000e_getreg(FCTTV), 3036 e1000e_getreg(EEWR), 3037 e1000e_getreg(FLSWCTL), 3038 e1000e_getreg(RXDCTL1), 3039 e1000e_getreg(RXSATRL), 3040 e1000e_getreg(RXUDP), 3041 e1000e_getreg(TORL), 3042 e1000e_getreg(TDLEN1), 3043 e1000e_getreg(MCC), 3044 e1000e_getreg(WUC), 3045 e1000e_getreg(EECD), 3046 e1000e_getreg(MFUTP23), 3047 e1000e_getreg(RAID), 3048 e1000e_getreg(FCRTV), 3049 e1000e_getreg(TXDCTL1), 3050 e1000e_getreg(RCTL), 3051 e1000e_getreg(TDT), 3052 e1000e_getreg(MDIC), 3053 e1000e_getreg(FCRUC), 3054 e1000e_getreg(VET), 3055 e1000e_getreg(RDBAL0), 3056 e1000e_getreg(TDBAH1), 3057 e1000e_getreg(RDTR), 3058 e1000e_getreg(SCC), 3059 e1000e_getreg(COLC), 3060 e1000e_getreg(CEXTERR), 3061 e1000e_getreg(XOFFRXC), 3062 e1000e_getreg(IPAV), 3063 e1000e_getreg(GOTCL), 3064 e1000e_getreg(MGTPDC), 3065 e1000e_getreg(GCR), 3066 e1000e_getreg(IVAR), 3067 e1000e_getreg(POEMB), 3068 e1000e_getreg(MFVAL), 3069 e1000e_getreg(FUNCTAG), 3070 e1000e_getreg(GSCL_4), 3071 e1000e_getreg(GSCN_3), 3072 e1000e_getreg(MRQC), 3073 e1000e_getreg(RDLEN1), 3074 e1000e_getreg(FCT), 3075 e1000e_getreg(FLA), 3076 e1000e_getreg(FLOL), 3077 e1000e_getreg(RXDCTL), 3078 e1000e_getreg(RXSTMPL), 3079 e1000e_getreg(TIMADJH), 3080 e1000e_getreg(FCRTL), 3081 e1000e_getreg(TDBAH), 3082 e1000e_getreg(TADV), 3083 e1000e_getreg(XONRXC), 3084 e1000e_getreg(TSCTFC), 3085 e1000e_getreg(RFCTL), 3086 e1000e_getreg(GSCN_1), 3087 e1000e_getreg(FCAL), 3088 e1000e_getreg(FLSWCNT), 3089 3090 [TOTH] = e1000e_mac_read_clr8, 3091 [GOTCH] = e1000e_mac_read_clr8, 3092 [PRC64] = e1000e_mac_read_clr4, 3093 [PRC255] = e1000e_mac_read_clr4, 3094 [PRC1023] = e1000e_mac_read_clr4, 3095 [PTC64] = e1000e_mac_read_clr4, 3096 [PTC255] = e1000e_mac_read_clr4, 3097 [PTC1023] = e1000e_mac_read_clr4, 3098 [GPRC] = e1000e_mac_read_clr4, 3099 [TPT] = e1000e_mac_read_clr4, 3100 [RUC] = e1000e_mac_read_clr4, 3101 [BPRC] = e1000e_mac_read_clr4, 3102 [MPTC] = e1000e_mac_read_clr4, 3103 [IAC] = e1000e_mac_read_clr4, 3104 [ICR] = e1000e_mac_icr_read, 3105 [STATUS] = e1000e_get_status, 3106 [TARC0] = e1000e_get_tarc, 3107 [ICS] = e1000e_mac_ics_read, 3108 [TORH] = e1000e_mac_read_clr8, 3109 [GORCH] = e1000e_mac_read_clr8, 3110 [PRC127] = e1000e_mac_read_clr4, 3111 [PRC511] = e1000e_mac_read_clr4, 3112 [PRC1522] = e1000e_mac_read_clr4, 3113 [PTC127] = e1000e_mac_read_clr4, 3114 [PTC511] = e1000e_mac_read_clr4, 3115 [PTC1522] = e1000e_mac_read_clr4, 3116 [GPTC] = e1000e_mac_read_clr4, 3117 [TPR] = e1000e_mac_read_clr4, 3118 [ROC] = e1000e_mac_read_clr4, 3119 [MPRC] = e1000e_mac_read_clr4, 3120 [BPTC] = e1000e_mac_read_clr4, 3121 [TSCTC] = e1000e_mac_read_clr4, 3122 [ITR] = e1000e_mac_itr_read, 3123 [CTRL] = e1000e_get_ctrl, 3124 [TARC1] = e1000e_get_tarc, 3125 [SWSM] = e1000e_mac_swsm_read, 3126 [IMS] = e1000e_mac_ims_read, 3127 [SYSTIML] = e1000e_get_systiml, 3128 [RXSATRH] = e1000e_get_rxsatrh, 3129 [TXSTMPH] = e1000e_get_txstmph, 3130 3131 [CRCERRS ... MPC] = e1000e_mac_readreg, 3132 [IP6AT ... IP6AT + 3] = e1000e_mac_readreg, 3133 [IP4AT ... IP4AT + 6] = e1000e_mac_readreg, 3134 [RA ... RA + 31] = e1000e_mac_readreg, 3135 [WUPM ... WUPM + 31] = e1000e_mac_readreg, 3136 [MTA ... MTA + E1000_MC_TBL_SIZE - 1] = e1000e_mac_readreg, 3137 [VFTA ... VFTA + E1000_VLAN_FILTER_TBL_SIZE - 1] = e1000e_mac_readreg, 3138 [FFMT ... FFMT + 254] = e1000e_mac_readreg, 3139 [FFVT ... FFVT + 254] = e1000e_mac_readreg, 3140 [MDEF ... MDEF + 7] = e1000e_mac_readreg, 3141 [FFLT ... FFLT + 10] = e1000e_mac_readreg, 3142 [FTFT ... FTFT + 254] = e1000e_mac_readreg, 3143 [PBM ... PBM + 10239] = e1000e_mac_readreg, 3144 [RETA ... RETA + 31] = e1000e_mac_readreg, 3145 [RSSRK ... RSSRK + 31] = e1000e_mac_readreg, 3146 [MAVTV0 ... MAVTV3] = e1000e_mac_readreg, 3147 [EITR...EITR + E1000E_MSIX_VEC_NUM - 1] = e1000e_mac_eitr_read 3148 }; 3149 enum { E1000E_NREADOPS = ARRAY_SIZE(e1000e_macreg_readops) }; 3150 3151 #define e1000e_putreg(x) [x] = e1000e_mac_writereg 3152 typedef void (*writeops)(E1000ECore *, int, uint32_t); 3153 static const writeops e1000e_macreg_writeops[] = { 3154 e1000e_putreg(PBA), 3155 e1000e_putreg(SWSM), 3156 e1000e_putreg(WUFC), 3157 e1000e_putreg(RDBAH1), 3158 e1000e_putreg(TDBAH), 3159 e1000e_putreg(TXDCTL), 3160 e1000e_putreg(RDBAH0), 3161 e1000e_putreg(LEDCTL), 3162 e1000e_putreg(FCAL), 3163 e1000e_putreg(FCRUC), 3164 e1000e_putreg(WUC), 3165 e1000e_putreg(WUS), 3166 e1000e_putreg(IPAV), 3167 e1000e_putreg(TDBAH1), 3168 e1000e_putreg(IAM), 3169 e1000e_putreg(EIAC), 3170 e1000e_putreg(IVAR), 3171 e1000e_putreg(TARC0), 3172 e1000e_putreg(TARC1), 3173 e1000e_putreg(FLSWDATA), 3174 e1000e_putreg(POEMB), 3175 e1000e_putreg(MFUTP01), 3176 e1000e_putreg(MFUTP23), 3177 e1000e_putreg(MANC), 3178 e1000e_putreg(MANC2H), 3179 e1000e_putreg(MFVAL), 3180 e1000e_putreg(EXTCNF_CTRL), 3181 e1000e_putreg(FACTPS), 3182 e1000e_putreg(FUNCTAG), 3183 e1000e_putreg(GSCL_1), 3184 e1000e_putreg(GSCL_2), 3185 e1000e_putreg(GSCL_3), 3186 e1000e_putreg(GSCL_4), 3187 e1000e_putreg(GSCN_0), 3188 e1000e_putreg(GSCN_1), 3189 e1000e_putreg(GSCN_2), 3190 e1000e_putreg(GSCN_3), 3191 e1000e_putreg(GCR2), 3192 e1000e_putreg(MRQC), 3193 e1000e_putreg(FLOP), 3194 e1000e_putreg(FLOL), 3195 e1000e_putreg(FLSWCTL), 3196 e1000e_putreg(FLSWCNT), 3197 e1000e_putreg(FLA), 3198 e1000e_putreg(RXDCTL1), 3199 e1000e_putreg(TXDCTL1), 3200 e1000e_putreg(TIPG), 3201 e1000e_putreg(RXSTMPH), 3202 e1000e_putreg(RXSTMPL), 3203 e1000e_putreg(RXSATRL), 3204 e1000e_putreg(RXSATRH), 3205 e1000e_putreg(TXSTMPL), 3206 e1000e_putreg(TXSTMPH), 3207 e1000e_putreg(SYSTIML), 3208 e1000e_putreg(SYSTIMH), 3209 e1000e_putreg(TIMADJL), 3210 e1000e_putreg(RXUDP), 3211 e1000e_putreg(RXCFGL), 3212 e1000e_putreg(TSYNCRXCTL), 3213 e1000e_putreg(TSYNCTXCTL), 3214 e1000e_putreg(EXTCNF_SIZE), 3215 e1000e_putreg(EEMNGCTL), 3216 e1000e_putreg(RA), 3217 3218 [TDH1] = e1000e_set_16bit, 3219 [TDT1] = e1000e_set_tdt, 3220 [TCTL] = e1000e_set_tctl, 3221 [TDT] = e1000e_set_tdt, 3222 [MDIC] = e1000e_set_mdic, 3223 [ICS] = e1000e_set_ics, 3224 [TDH] = e1000e_set_16bit, 3225 [RDH0] = e1000e_set_16bit, 3226 [RDT0] = e1000e_set_rdt, 3227 [IMC] = e1000e_set_imc, 3228 [IMS] = e1000e_set_ims, 3229 [ICR] = e1000e_set_icr, 3230 [EECD] = e1000e_set_eecd, 3231 [RCTL] = e1000e_set_rx_control, 3232 [CTRL] = e1000e_set_ctrl, 3233 [RDTR] = e1000e_set_rdtr, 3234 [RADV] = e1000e_set_16bit, 3235 [TADV] = e1000e_set_16bit, 3236 [ITR] = e1000e_set_itr, 3237 [EERD] = e1000e_set_eerd, 3238 [AIT] = e1000e_set_16bit, 3239 [TDFH] = e1000e_set_13bit, 3240 [TDFT] = e1000e_set_13bit, 3241 [TDFHS] = e1000e_set_13bit, 3242 [TDFTS] = e1000e_set_13bit, 3243 [TDFPC] = e1000e_set_13bit, 3244 [RDFH] = e1000e_set_13bit, 3245 [RDFHS] = e1000e_set_13bit, 3246 [RDFT] = e1000e_set_13bit, 3247 [RDFTS] = e1000e_set_13bit, 3248 [RDFPC] = e1000e_set_13bit, 3249 [PBS] = e1000e_set_6bit, 3250 [GCR] = e1000e_set_gcr, 3251 [PSRCTL] = e1000e_set_psrctl, 3252 [RXCSUM] = e1000e_set_rxcsum, 3253 [RAID] = e1000e_set_16bit, 3254 [RSRPD] = e1000e_set_12bit, 3255 [TIDV] = e1000e_set_tidv, 3256 [TDLEN1] = e1000e_set_dlen, 3257 [TDLEN] = e1000e_set_dlen, 3258 [RDLEN0] = e1000e_set_dlen, 3259 [RDLEN1] = e1000e_set_dlen, 3260 [TDBAL] = e1000e_set_dbal, 3261 [TDBAL1] = e1000e_set_dbal, 3262 [RDBAL0] = e1000e_set_dbal, 3263 [RDBAL1] = e1000e_set_dbal, 3264 [RDH1] = e1000e_set_16bit, 3265 [RDT1] = e1000e_set_rdt, 3266 [STATUS] = e1000e_set_status, 3267 [PBACLR] = e1000e_set_pbaclr, 3268 [CTRL_EXT] = e1000e_set_ctrlext, 3269 [FCAH] = e1000e_set_16bit, 3270 [FCT] = e1000e_set_16bit, 3271 [FCTTV] = e1000e_set_16bit, 3272 [FCRTV] = e1000e_set_16bit, 3273 [FCRTH] = e1000e_set_fcrth, 3274 [FCRTL] = e1000e_set_fcrtl, 3275 [VET] = e1000e_set_vet, 3276 [RXDCTL] = e1000e_set_rxdctl, 3277 [FLASHT] = e1000e_set_16bit, 3278 [EEWR] = e1000e_set_eewr, 3279 [CTRL_DUP] = e1000e_set_ctrl, 3280 [RFCTL] = e1000e_set_rfctl, 3281 [RA + 1] = e1000e_mac_setmacaddr, 3282 [TIMINCA] = e1000e_set_timinca, 3283 [TIMADJH] = e1000e_set_timadjh, 3284 3285 [IP6AT ... IP6AT + 3] = e1000e_mac_writereg, 3286 [IP4AT ... IP4AT + 6] = e1000e_mac_writereg, 3287 [RA + 2 ... RA + 31] = e1000e_mac_writereg, 3288 [WUPM ... WUPM + 31] = e1000e_mac_writereg, 3289 [MTA ... MTA + E1000_MC_TBL_SIZE - 1] = e1000e_mac_writereg, 3290 [VFTA ... VFTA + E1000_VLAN_FILTER_TBL_SIZE - 1] = e1000e_mac_writereg, 3291 [FFMT ... FFMT + 254] = e1000e_set_4bit, 3292 [FFVT ... FFVT + 254] = e1000e_mac_writereg, 3293 [PBM ... PBM + 10239] = e1000e_mac_writereg, 3294 [MDEF ... MDEF + 7] = e1000e_mac_writereg, 3295 [FFLT ... FFLT + 10] = e1000e_set_11bit, 3296 [FTFT ... FTFT + 254] = e1000e_mac_writereg, 3297 [RETA ... RETA + 31] = e1000e_mac_writereg, 3298 [RSSRK ... RSSRK + 31] = e1000e_mac_writereg, 3299 [MAVTV0 ... MAVTV3] = e1000e_mac_writereg, 3300 [EITR...EITR + E1000E_MSIX_VEC_NUM - 1] = e1000e_set_eitr 3301 }; 3302 enum { E1000E_NWRITEOPS = ARRAY_SIZE(e1000e_macreg_writeops) }; 3303 3304 enum { MAC_ACCESS_PARTIAL = 1 }; 3305 3306 /* 3307 * The array below combines alias offsets of the index values for the 3308 * MAC registers that have aliases, with the indication of not fully 3309 * implemented registers (lowest bit). This combination is possible 3310 * because all of the offsets are even. 3311 */ 3312 static const uint16_t mac_reg_access[E1000E_MAC_SIZE] = { 3313 /* Alias index offsets */ 3314 [FCRTL_A] = 0x07fe, [FCRTH_A] = 0x0802, 3315 [RDH0_A] = 0x09bc, [RDT0_A] = 0x09bc, [RDTR_A] = 0x09c6, 3316 [RDFH_A] = 0xe904, [RDFT_A] = 0xe904, 3317 [TDH_A] = 0x0cf8, [TDT_A] = 0x0cf8, [TIDV_A] = 0x0cf8, 3318 [TDFH_A] = 0xed00, [TDFT_A] = 0xed00, 3319 [RA_A ... RA_A + 31] = 0x14f0, 3320 [VFTA_A ... VFTA_A + E1000_VLAN_FILTER_TBL_SIZE - 1] = 0x1400, 3321 [RDBAL0_A ... RDLEN0_A] = 0x09bc, 3322 [TDBAL_A ... TDLEN_A] = 0x0cf8, 3323 /* Access options */ 3324 [RDFH] = MAC_ACCESS_PARTIAL, [RDFT] = MAC_ACCESS_PARTIAL, 3325 [RDFHS] = MAC_ACCESS_PARTIAL, [RDFTS] = MAC_ACCESS_PARTIAL, 3326 [RDFPC] = MAC_ACCESS_PARTIAL, 3327 [TDFH] = MAC_ACCESS_PARTIAL, [TDFT] = MAC_ACCESS_PARTIAL, 3328 [TDFHS] = MAC_ACCESS_PARTIAL, [TDFTS] = MAC_ACCESS_PARTIAL, 3329 [TDFPC] = MAC_ACCESS_PARTIAL, [EECD] = MAC_ACCESS_PARTIAL, 3330 [PBM] = MAC_ACCESS_PARTIAL, [FLA] = MAC_ACCESS_PARTIAL, 3331 [FCAL] = MAC_ACCESS_PARTIAL, [FCAH] = MAC_ACCESS_PARTIAL, 3332 [FCT] = MAC_ACCESS_PARTIAL, [FCTTV] = MAC_ACCESS_PARTIAL, 3333 [FCRTV] = MAC_ACCESS_PARTIAL, [FCRTL] = MAC_ACCESS_PARTIAL, 3334 [FCRTH] = MAC_ACCESS_PARTIAL, [TXDCTL] = MAC_ACCESS_PARTIAL, 3335 [TXDCTL1] = MAC_ACCESS_PARTIAL, 3336 [MAVTV0 ... MAVTV3] = MAC_ACCESS_PARTIAL 3337 }; 3338 3339 void 3340 e1000e_core_write(E1000ECore *core, hwaddr addr, uint64_t val, unsigned size) 3341 { 3342 uint16_t index = e1000e_get_reg_index_with_offset(mac_reg_access, addr); 3343 3344 if (index < E1000E_NWRITEOPS && e1000e_macreg_writeops[index]) { 3345 if (mac_reg_access[index] & MAC_ACCESS_PARTIAL) { 3346 trace_e1000e_wrn_regs_write_trivial(index << 2); 3347 } 3348 trace_e1000e_core_write(index << 2, size, val); 3349 e1000e_macreg_writeops[index](core, index, val); 3350 } else if (index < E1000E_NREADOPS && e1000e_macreg_readops[index]) { 3351 trace_e1000e_wrn_regs_write_ro(index << 2, size, val); 3352 } else { 3353 trace_e1000e_wrn_regs_write_unknown(index << 2, size, val); 3354 } 3355 } 3356 3357 uint64_t 3358 e1000e_core_read(E1000ECore *core, hwaddr addr, unsigned size) 3359 { 3360 uint64_t val; 3361 uint16_t index = e1000e_get_reg_index_with_offset(mac_reg_access, addr); 3362 3363 if (index < E1000E_NREADOPS && e1000e_macreg_readops[index]) { 3364 if (mac_reg_access[index] & MAC_ACCESS_PARTIAL) { 3365 trace_e1000e_wrn_regs_read_trivial(index << 2); 3366 } 3367 val = e1000e_macreg_readops[index](core, index); 3368 trace_e1000e_core_read(index << 2, size, val); 3369 return val; 3370 } else { 3371 trace_e1000e_wrn_regs_read_unknown(index << 2, size); 3372 } 3373 return 0; 3374 } 3375 3376 static inline void 3377 e1000e_autoneg_pause(E1000ECore *core) 3378 { 3379 timer_del(core->autoneg_timer); 3380 } 3381 3382 static void 3383 e1000e_autoneg_resume(E1000ECore *core) 3384 { 3385 if (e1000e_have_autoneg(core) && 3386 !(core->phy[0][MII_BMSR] & MII_BMSR_AN_COMP)) { 3387 qemu_get_queue(core->owner_nic)->link_down = false; 3388 timer_mod(core->autoneg_timer, 3389 qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 500); 3390 } 3391 } 3392 3393 static void 3394 e1000e_vm_state_change(void *opaque, bool running, RunState state) 3395 { 3396 E1000ECore *core = opaque; 3397 3398 if (running) { 3399 trace_e1000e_vm_state_running(); 3400 e1000e_intrmgr_resume(core); 3401 e1000e_autoneg_resume(core); 3402 } else { 3403 trace_e1000e_vm_state_stopped(); 3404 e1000e_autoneg_pause(core); 3405 e1000e_intrmgr_pause(core); 3406 } 3407 } 3408 3409 void 3410 e1000e_core_pci_realize(E1000ECore *core, 3411 const uint16_t *eeprom_templ, 3412 uint32_t eeprom_size, 3413 const uint8_t *macaddr) 3414 { 3415 int i; 3416 3417 core->autoneg_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL, 3418 e1000e_autoneg_timer, core); 3419 e1000e_intrmgr_pci_realize(core); 3420 3421 core->vmstate = 3422 qemu_add_vm_change_state_handler(e1000e_vm_state_change, core); 3423 3424 for (i = 0; i < E1000E_NUM_QUEUES; i++) { 3425 net_tx_pkt_init(&core->tx[i].tx_pkt, core->owner, E1000E_MAX_TX_FRAGS); 3426 } 3427 3428 net_rx_pkt_init(&core->rx_pkt); 3429 3430 e1000x_core_prepare_eeprom(core->eeprom, 3431 eeprom_templ, 3432 eeprom_size, 3433 PCI_DEVICE_GET_CLASS(core->owner)->device_id, 3434 macaddr); 3435 e1000e_update_rx_offloads(core); 3436 } 3437 3438 void 3439 e1000e_core_pci_uninit(E1000ECore *core) 3440 { 3441 int i; 3442 3443 timer_free(core->autoneg_timer); 3444 3445 e1000e_intrmgr_pci_unint(core); 3446 3447 qemu_del_vm_change_state_handler(core->vmstate); 3448 3449 for (i = 0; i < E1000E_NUM_QUEUES; i++) { 3450 net_tx_pkt_reset(core->tx[i].tx_pkt); 3451 net_tx_pkt_uninit(core->tx[i].tx_pkt); 3452 } 3453 3454 net_rx_pkt_uninit(core->rx_pkt); 3455 } 3456 3457 static const uint16_t 3458 e1000e_phy_reg_init[E1000E_PHY_PAGES][E1000E_PHY_PAGE_SIZE] = { 3459 [0] = { 3460 [MII_BMCR] = MII_BMCR_SPEED1000 | 3461 MII_BMCR_FD | 3462 MII_BMCR_AUTOEN, 3463 3464 [MII_BMSR] = MII_BMSR_EXTCAP | 3465 MII_BMSR_LINK_ST | 3466 MII_BMSR_AUTONEG | 3467 MII_BMSR_MFPS | 3468 MII_BMSR_EXTSTAT | 3469 MII_BMSR_10T_HD | 3470 MII_BMSR_10T_FD | 3471 MII_BMSR_100TX_HD | 3472 MII_BMSR_100TX_FD, 3473 3474 [MII_PHYID1] = 0x141, 3475 [MII_PHYID2] = E1000_PHY_ID2_82574x, 3476 [MII_ANAR] = MII_ANAR_CSMACD | MII_ANAR_10 | 3477 MII_ANAR_10FD | MII_ANAR_TX | 3478 MII_ANAR_TXFD | MII_ANAR_PAUSE | 3479 MII_ANAR_PAUSE_ASYM, 3480 [MII_ANLPAR] = MII_ANLPAR_10 | MII_ANLPAR_10FD | 3481 MII_ANLPAR_TX | MII_ANLPAR_TXFD | 3482 MII_ANLPAR_T4 | MII_ANLPAR_PAUSE, 3483 [MII_ANER] = MII_ANER_NP | MII_ANER_NWAY, 3484 [MII_ANNP] = 1 | MII_ANNP_MP, 3485 [MII_CTRL1000] = MII_CTRL1000_HALF | MII_CTRL1000_FULL | 3486 MII_CTRL1000_PORT | MII_CTRL1000_MASTER, 3487 [MII_STAT1000] = MII_STAT1000_HALF | MII_STAT1000_FULL | 3488 MII_STAT1000_ROK | MII_STAT1000_LOK, 3489 [MII_EXTSTAT] = MII_EXTSTAT_1000T_HD | MII_EXTSTAT_1000T_FD, 3490 3491 [PHY_COPPER_CTRL1] = BIT(5) | BIT(6) | BIT(8) | BIT(9) | 3492 BIT(12) | BIT(13), 3493 [PHY_COPPER_STAT1] = BIT(3) | BIT(10) | BIT(11) | BIT(13) | BIT(15) 3494 }, 3495 [2] = { 3496 [PHY_MAC_CTRL1] = BIT(3) | BIT(7), 3497 [PHY_MAC_CTRL2] = BIT(1) | BIT(2) | BIT(6) | BIT(12) 3498 }, 3499 [3] = { 3500 [PHY_LED_TIMER_CTRL] = BIT(0) | BIT(2) | BIT(14) 3501 } 3502 }; 3503 3504 static const uint32_t e1000e_mac_reg_init[] = { 3505 [PBA] = 0x00140014, 3506 [LEDCTL] = BIT(1) | BIT(8) | BIT(9) | BIT(15) | BIT(17) | BIT(18), 3507 [EXTCNF_CTRL] = BIT(3), 3508 [EEMNGCTL] = BIT(31), 3509 [FLASHT] = 0x2, 3510 [FLSWCTL] = BIT(30) | BIT(31), 3511 [FLOL] = BIT(0), 3512 [RXDCTL] = BIT(16), 3513 [RXDCTL1] = BIT(16), 3514 [TIPG] = 0x8 | (0x8 << 10) | (0x6 << 20), 3515 [RXCFGL] = 0x88F7, 3516 [RXUDP] = 0x319, 3517 [CTRL] = E1000_CTRL_FD | E1000_CTRL_SWDPIN2 | E1000_CTRL_SWDPIN0 | 3518 E1000_CTRL_SPD_1000 | E1000_CTRL_SLU | 3519 E1000_CTRL_ADVD3WUC, 3520 [STATUS] = E1000_STATUS_ASDV_1000 | E1000_STATUS_LU, 3521 [PSRCTL] = (2 << E1000_PSRCTL_BSIZE0_SHIFT) | 3522 (4 << E1000_PSRCTL_BSIZE1_SHIFT) | 3523 (4 << E1000_PSRCTL_BSIZE2_SHIFT), 3524 [TARC0] = 0x3 | E1000_TARC_ENABLE, 3525 [TARC1] = 0x3 | E1000_TARC_ENABLE, 3526 [EECD] = E1000_EECD_AUTO_RD | E1000_EECD_PRES, 3527 [EERD] = E1000_EERW_DONE, 3528 [EEWR] = E1000_EERW_DONE, 3529 [GCR] = E1000_L0S_ADJUST | 3530 E1000_L1_ENTRY_LATENCY_MSB | 3531 E1000_L1_ENTRY_LATENCY_LSB, 3532 [TDFH] = 0x600, 3533 [TDFT] = 0x600, 3534 [TDFHS] = 0x600, 3535 [TDFTS] = 0x600, 3536 [POEMB] = 0x30D, 3537 [PBS] = 0x028, 3538 [MANC] = E1000_MANC_DIS_IP_CHK_ARP, 3539 [FACTPS] = E1000_FACTPS_LAN0_ON | 0x20000000, 3540 [SWSM] = 1, 3541 [RXCSUM] = E1000_RXCSUM_IPOFLD | E1000_RXCSUM_TUOFLD, 3542 [ITR] = E1000E_MIN_XITR, 3543 [EITR...EITR + E1000E_MSIX_VEC_NUM - 1] = E1000E_MIN_XITR, 3544 }; 3545 3546 static void e1000e_reset(E1000ECore *core, bool sw) 3547 { 3548 int i; 3549 3550 timer_del(core->autoneg_timer); 3551 3552 e1000e_intrmgr_reset(core); 3553 3554 memset(core->phy, 0, sizeof core->phy); 3555 memcpy(core->phy, e1000e_phy_reg_init, sizeof e1000e_phy_reg_init); 3556 3557 for (i = 0; i < E1000E_MAC_SIZE; i++) { 3558 if (sw && (i == PBA || i == PBS || i == FLA)) { 3559 continue; 3560 } 3561 3562 core->mac[i] = i < ARRAY_SIZE(e1000e_mac_reg_init) ? 3563 e1000e_mac_reg_init[i] : 0; 3564 } 3565 3566 core->rxbuf_min_shift = 1 + E1000_RING_DESC_LEN_SHIFT; 3567 3568 if (qemu_get_queue(core->owner_nic)->link_down) { 3569 e1000e_link_down(core); 3570 } 3571 3572 e1000x_reset_mac_addr(core->owner_nic, core->mac, core->permanent_mac); 3573 3574 for (i = 0; i < ARRAY_SIZE(core->tx); i++) { 3575 net_tx_pkt_reset(core->tx[i].tx_pkt); 3576 memset(&core->tx[i].props, 0, sizeof(core->tx[i].props)); 3577 core->tx[i].skip_cp = false; 3578 } 3579 } 3580 3581 void 3582 e1000e_core_reset(E1000ECore *core) 3583 { 3584 e1000e_reset(core, false); 3585 } 3586 3587 void e1000e_core_pre_save(E1000ECore *core) 3588 { 3589 int i; 3590 NetClientState *nc = qemu_get_queue(core->owner_nic); 3591 3592 /* 3593 * If link is down and auto-negotiation is supported and ongoing, 3594 * complete auto-negotiation immediately. This allows us to look 3595 * at MII_BMSR_AN_COMP to infer link status on load. 3596 */ 3597 if (nc->link_down && e1000e_have_autoneg(core)) { 3598 core->phy[0][MII_BMSR] |= MII_BMSR_AN_COMP; 3599 e1000e_update_flowctl_status(core); 3600 } 3601 3602 for (i = 0; i < ARRAY_SIZE(core->tx); i++) { 3603 if (net_tx_pkt_has_fragments(core->tx[i].tx_pkt)) { 3604 core->tx[i].skip_cp = true; 3605 } 3606 } 3607 } 3608 3609 int 3610 e1000e_core_post_load(E1000ECore *core) 3611 { 3612 NetClientState *nc = qemu_get_queue(core->owner_nic); 3613 3614 /* 3615 * nc.link_down can't be migrated, so infer link_down according 3616 * to link status bit in core.mac[STATUS]. 3617 */ 3618 nc->link_down = (core->mac[STATUS] & E1000_STATUS_LU) == 0; 3619 3620 return 0; 3621 } 3622