1 /****************************************************************************** 2 3 Copyright (c) 2001-2017, Intel Corporation 4 All rights reserved. 5 6 Redistribution and use in source and binary forms, with or without 7 modification, are permitted provided that the following conditions are met: 8 9 1. Redistributions of source code must retain the above copyright notice, 10 this list of conditions and the following disclaimer. 11 12 2. Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in the 14 documentation and/or other materials provided with the distribution. 15 16 3. Neither the name of the Intel Corporation nor the names of its 17 contributors may be used to endorse or promote products derived from 18 this software without specific prior written permission. 19 20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 POSSIBILITY OF SUCH DAMAGE. 31 32 ******************************************************************************/ 33 /*$FreeBSD$*/ 34 35 36 #ifndef IXGBE_STANDALONE_BUILD 37 #include "opt_inet.h" 38 #include "opt_inet6.h" 39 #endif 40 41 #include "ixgbe.h" 42 43 /************************************************************************ 44 * Driver version 45 ************************************************************************/ 46 char ixv_driver_version[] = "1.5.13-k"; 47 48 /************************************************************************ 49 * PCI Device ID Table 50 * 51 * Used by probe to select devices to load on 52 * Last field stores an index into ixv_strings 53 * Last entry must be all 0s 54 * 55 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, String Index } 56 ************************************************************************/ 57 static ixgbe_vendor_info_t ixv_vendor_info_array[] = 58 { 59 {IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_82599_VF, 0, 0, 0}, 60 {IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X540_VF, 0, 0, 0}, 61 {IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X550_VF, 0, 0, 0}, 62 {IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X550EM_X_VF, 0, 0, 0}, 63 {IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X550EM_A_VF, 0, 0, 0}, 64 /* required last entry */ 65 {0, 0, 0, 0, 0} 66 }; 67 68 /************************************************************************ 69 * Table of branding strings 70 ************************************************************************/ 71 static char *ixv_strings[] = { 72 "Intel(R) PRO/10GbE Virtual Function Network Driver" 73 }; 74 75 /************************************************************************ 76 * Function prototypes 77 ************************************************************************/ 78 static int ixv_probe(device_t); 79 static int ixv_attach(device_t); 80 static int ixv_detach(device_t); 81 static int ixv_shutdown(device_t); 82 static int ixv_ioctl(struct ifnet *, u_long, caddr_t); 83 static void ixv_init(void *); 84 static void ixv_init_locked(struct adapter *); 85 static void ixv_stop(void *); 86 static uint64_t ixv_get_counter(struct ifnet *, ift_counter); 87 static void ixv_init_device_features(struct adapter *); 88 static void ixv_media_status(struct ifnet *, struct ifmediareq *); 89 static int ixv_media_change(struct ifnet *); 90 static int ixv_allocate_pci_resources(struct adapter *); 91 static int ixv_allocate_msix(struct adapter *); 92 static int ixv_configure_interrupts(struct adapter *); 93 static void ixv_free_pci_resources(struct adapter *); 94 static void ixv_local_timer(void *); 95 static void ixv_setup_interface(device_t, struct adapter *); 96 97 static void ixv_initialize_transmit_units(struct adapter *); 98 static void ixv_initialize_receive_units(struct adapter *); 99 static void ixv_initialize_rss_mapping(struct adapter *); 100 static void ixv_check_link(struct adapter *); 101 102 static void ixv_enable_intr(struct adapter *); 103 static void ixv_disable_intr(struct adapter *); 104 static void ixv_set_multi(struct adapter *); 105 static void ixv_update_link_status(struct adapter *); 106 static int ixv_sysctl_debug(SYSCTL_HANDLER_ARGS); 107 static void ixv_set_ivar(struct adapter *, u8, u8, s8); 108 static void ixv_configure_ivars(struct adapter *); 109 static u8 *ixv_mc_array_itr(struct ixgbe_hw *, u8 **, u32 *); 110 111 static void ixv_setup_vlan_support(struct adapter *); 112 static void ixv_register_vlan(void *, struct ifnet *, u16); 113 static void ixv_unregister_vlan(void *, struct ifnet *, u16); 114 115 static void ixv_save_stats(struct adapter *); 116 static void ixv_init_stats(struct adapter *); 117 static void ixv_update_stats(struct adapter *); 118 static void ixv_add_stats_sysctls(struct adapter *); 119 static void ixv_set_sysctl_value(struct adapter *, const char *, 120 const char *, int *, int); 121 122 /* The MSI-X Interrupt handlers */ 123 static void ixv_msix_que(void *); 124 static void ixv_msix_mbx(void *); 125 126 /* Deferred interrupt tasklets */ 127 static void ixv_handle_que(void *, int); 128 static void ixv_handle_link(void *, int); 129 130 /************************************************************************ 131 * FreeBSD Device Interface Entry Points 132 ************************************************************************/ 133 static device_method_t ixv_methods[] = { 134 /* Device interface */ 135 DEVMETHOD(device_probe, ixv_probe), 136 DEVMETHOD(device_attach, ixv_attach), 137 DEVMETHOD(device_detach, ixv_detach), 138 DEVMETHOD(device_shutdown, ixv_shutdown), 139 DEVMETHOD_END 140 }; 141 142 static driver_t ixv_driver = { 143 "ixv", ixv_methods, sizeof(struct adapter), 144 }; 145 146 devclass_t ixv_devclass; 147 DRIVER_MODULE(ixv, pci, ixv_driver, ixv_devclass, 0, 0); 148 MODULE_DEPEND(ixv, pci, 1, 1, 1); 149 MODULE_DEPEND(ixv, ether, 1, 1, 1); 150 MODULE_DEPEND(ixv, netmap, 1, 1, 1); 151 152 /* 153 * TUNEABLE PARAMETERS: 154 */ 155 156 /* Number of Queues - do not exceed MSI-X vectors - 1 */ 157 static int ixv_num_queues = 1; 158 TUNABLE_INT("hw.ixv.num_queues", &ixv_num_queues); 159 160 /* 161 * AIM: Adaptive Interrupt Moderation 162 * which means that the interrupt rate 163 * is varied over time based on the 164 * traffic for that interrupt vector 165 */ 166 static int ixv_enable_aim = FALSE; 167 TUNABLE_INT("hw.ixv.enable_aim", &ixv_enable_aim); 168 169 /* How many packets rxeof tries to clean at a time */ 170 static int ixv_rx_process_limit = 256; 171 TUNABLE_INT("hw.ixv.rx_process_limit", &ixv_rx_process_limit); 172 173 /* How many packets txeof tries to clean at a time */ 174 static int ixv_tx_process_limit = 256; 175 TUNABLE_INT("hw.ixv.tx_process_limit", &ixv_tx_process_limit); 176 177 /* Flow control setting, default to full */ 178 static int ixv_flow_control = ixgbe_fc_full; 179 TUNABLE_INT("hw.ixv.flow_control", &ixv_flow_control); 180 181 /* 182 * Header split: this causes the hardware to DMA 183 * the header into a separate mbuf from the payload, 184 * it can be a performance win in some workloads, but 185 * in others it actually hurts, its off by default. 186 */ 187 static int ixv_header_split = FALSE; 188 TUNABLE_INT("hw.ixv.hdr_split", &ixv_header_split); 189 190 /* 191 * Number of TX descriptors per ring, 192 * setting higher than RX as this seems 193 * the better performing choice. 194 */ 195 static int ixv_txd = DEFAULT_TXD; 196 TUNABLE_INT("hw.ixv.txd", &ixv_txd); 197 198 /* Number of RX descriptors per ring */ 199 static int ixv_rxd = DEFAULT_RXD; 200 TUNABLE_INT("hw.ixv.rxd", &ixv_rxd); 201 202 /* Legacy Transmit (single queue) */ 203 static int ixv_enable_legacy_tx = 0; 204 TUNABLE_INT("hw.ixv.enable_legacy_tx", &ixv_enable_legacy_tx); 205 206 /* 207 * Shadow VFTA table, this is needed because 208 * the real filter table gets cleared during 209 * a soft reset and we need to repopulate it. 210 */ 211 static u32 ixv_shadow_vfta[IXGBE_VFTA_SIZE]; 212 213 static int (*ixv_start_locked)(struct ifnet *, struct tx_ring *); 214 static int (*ixv_ring_empty)(struct ifnet *, struct buf_ring *); 215 216 /************************************************************************ 217 * ixv_probe - Device identification routine 218 * 219 * Determines if the driver should be loaded on 220 * adapter based on its PCI vendor/device ID. 221 * 222 * return BUS_PROBE_DEFAULT on success, positive on failure 223 ************************************************************************/ 224 static int 225 ixv_probe(device_t dev) 226 { 227 ixgbe_vendor_info_t *ent; 228 u16 pci_vendor_id = 0; 229 u16 pci_device_id = 0; 230 u16 pci_subvendor_id = 0; 231 u16 pci_subdevice_id = 0; 232 char adapter_name[256]; 233 234 235 pci_vendor_id = pci_get_vendor(dev); 236 if (pci_vendor_id != IXGBE_INTEL_VENDOR_ID) 237 return (ENXIO); 238 239 pci_device_id = pci_get_device(dev); 240 pci_subvendor_id = pci_get_subvendor(dev); 241 pci_subdevice_id = pci_get_subdevice(dev); 242 243 ent = ixv_vendor_info_array; 244 while (ent->vendor_id != 0) { 245 if ((pci_vendor_id == ent->vendor_id) && 246 (pci_device_id == ent->device_id) && 247 ((pci_subvendor_id == ent->subvendor_id) || 248 (ent->subvendor_id == 0)) && 249 ((pci_subdevice_id == ent->subdevice_id) || 250 (ent->subdevice_id == 0))) { 251 sprintf(adapter_name, "%s, Version - %s", 252 ixv_strings[ent->index], ixv_driver_version); 253 device_set_desc_copy(dev, adapter_name); 254 return (BUS_PROBE_DEFAULT); 255 } 256 ent++; 257 } 258 259 return (ENXIO); 260 } /* ixv_probe */ 261 262 /************************************************************************ 263 * ixv_attach - Device initialization routine 264 * 265 * Called when the driver is being loaded. 266 * Identifies the type of hardware, allocates all resources 267 * and initializes the hardware. 268 * 269 * return 0 on success, positive on failure 270 ************************************************************************/ 271 static int 272 ixv_attach(device_t dev) 273 { 274 struct adapter *adapter; 275 struct ixgbe_hw *hw; 276 int error = 0; 277 278 INIT_DEBUGOUT("ixv_attach: begin"); 279 280 /* 281 * Make sure BUSMASTER is set, on a VM under 282 * KVM it may not be and will break things. 283 */ 284 pci_enable_busmaster(dev); 285 286 /* Allocate, clear, and link in our adapter structure */ 287 adapter = device_get_softc(dev); 288 adapter->dev = dev; 289 adapter->hw.back = adapter; 290 hw = &adapter->hw; 291 292 adapter->init_locked = ixv_init_locked; 293 adapter->stop_locked = ixv_stop; 294 295 /* Core Lock Init*/ 296 IXGBE_CORE_LOCK_INIT(adapter, device_get_nameunit(dev)); 297 298 /* Do base PCI setup - map BAR0 */ 299 if (ixv_allocate_pci_resources(adapter)) { 300 device_printf(dev, "ixv_allocate_pci_resources() failed!\n"); 301 error = ENXIO; 302 goto err_out; 303 } 304 305 /* SYSCTL APIs */ 306 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 307 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "debug", 308 CTLTYPE_INT | CTLFLAG_RW, adapter, 0, ixv_sysctl_debug, "I", 309 "Debug Info"); 310 311 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 312 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 313 "enable_aim", CTLFLAG_RW, &ixv_enable_aim, 1, 314 "Interrupt Moderation"); 315 316 /* Set up the timer callout */ 317 callout_init_mtx(&adapter->timer, &adapter->core_mtx, 0); 318 319 /* Save off the information about this board */ 320 hw->vendor_id = pci_get_vendor(dev); 321 hw->device_id = pci_get_device(dev); 322 hw->revision_id = pci_get_revid(dev); 323 hw->subsystem_vendor_id = pci_get_subvendor(dev); 324 hw->subsystem_device_id = pci_get_subdevice(dev); 325 326 /* A subset of set_mac_type */ 327 switch (hw->device_id) { 328 case IXGBE_DEV_ID_82599_VF: 329 hw->mac.type = ixgbe_mac_82599_vf; 330 break; 331 case IXGBE_DEV_ID_X540_VF: 332 hw->mac.type = ixgbe_mac_X540_vf; 333 break; 334 case IXGBE_DEV_ID_X550_VF: 335 hw->mac.type = ixgbe_mac_X550_vf; 336 break; 337 case IXGBE_DEV_ID_X550EM_X_VF: 338 hw->mac.type = ixgbe_mac_X550EM_x_vf; 339 break; 340 case IXGBE_DEV_ID_X550EM_A_VF: 341 hw->mac.type = ixgbe_mac_X550EM_a_vf; 342 break; 343 default: 344 /* Shouldn't get here since probe succeeded */ 345 device_printf(dev, "Unknown device ID!\n"); 346 error = ENXIO; 347 goto err_out; 348 break; 349 } 350 351 ixv_init_device_features(adapter); 352 353 /* Initialize the shared code */ 354 error = ixgbe_init_ops_vf(hw); 355 if (error) { 356 device_printf(dev, "ixgbe_init_ops_vf() failed!\n"); 357 error = EIO; 358 goto err_out; 359 } 360 361 /* Setup the mailbox */ 362 ixgbe_init_mbx_params_vf(hw); 363 364 /* Set the right number of segments */ 365 adapter->num_segs = IXGBE_82599_SCATTER; 366 367 error = hw->mac.ops.reset_hw(hw); 368 if (error == IXGBE_ERR_RESET_FAILED) 369 device_printf(dev, "...reset_hw() failure: Reset Failed!\n"); 370 else if (error) 371 device_printf(dev, "...reset_hw() failed with error %d\n", 372 error); 373 if (error) { 374 error = EIO; 375 goto err_out; 376 } 377 378 error = hw->mac.ops.init_hw(hw); 379 if (error) { 380 device_printf(dev, "...init_hw() failed with error %d\n", 381 error); 382 error = EIO; 383 goto err_out; 384 } 385 386 /* Negotiate mailbox API version */ 387 error = ixgbevf_negotiate_api_version(hw, ixgbe_mbox_api_12); 388 if (error) { 389 device_printf(dev, "MBX API 1.2 negotiation failed! Error %d\n", 390 error); 391 error = EIO; 392 goto err_out; 393 } 394 395 /* If no mac address was assigned, make a random one */ 396 if (!ixv_check_ether_addr(hw->mac.addr)) { 397 u8 addr[ETHER_ADDR_LEN]; 398 arc4rand(&addr, sizeof(addr), 0); 399 addr[0] &= 0xFE; 400 addr[0] |= 0x02; 401 bcopy(addr, hw->mac.addr, sizeof(addr)); 402 bcopy(addr, hw->mac.perm_addr, sizeof(addr)); 403 } 404 405 /* Register for VLAN events */ 406 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config, 407 ixv_register_vlan, adapter, EVENTHANDLER_PRI_FIRST); 408 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig, 409 ixv_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST); 410 411 /* Sysctls for limiting the amount of work done in the taskqueues */ 412 ixv_set_sysctl_value(adapter, "rx_processing_limit", 413 "max number of rx packets to process", 414 &adapter->rx_process_limit, ixv_rx_process_limit); 415 416 ixv_set_sysctl_value(adapter, "tx_processing_limit", 417 "max number of tx packets to process", 418 &adapter->tx_process_limit, ixv_tx_process_limit); 419 420 /* Do descriptor calc and sanity checks */ 421 if (((ixv_txd * sizeof(union ixgbe_adv_tx_desc)) % DBA_ALIGN) != 0 || 422 ixv_txd < MIN_TXD || ixv_txd > MAX_TXD) { 423 device_printf(dev, "TXD config issue, using default!\n"); 424 adapter->num_tx_desc = DEFAULT_TXD; 425 } else 426 adapter->num_tx_desc = ixv_txd; 427 428 if (((ixv_rxd * sizeof(union ixgbe_adv_rx_desc)) % DBA_ALIGN) != 0 || 429 ixv_rxd < MIN_RXD || ixv_rxd > MAX_RXD) { 430 device_printf(dev, "RXD config issue, using default!\n"); 431 adapter->num_rx_desc = DEFAULT_RXD; 432 } else 433 adapter->num_rx_desc = ixv_rxd; 434 435 /* Setup MSI-X */ 436 error = ixv_configure_interrupts(adapter); 437 if (error) 438 goto err_out; 439 440 /* Allocate our TX/RX Queues */ 441 if (ixgbe_allocate_queues(adapter)) { 442 device_printf(dev, "ixgbe_allocate_queues() failed!\n"); 443 error = ENOMEM; 444 goto err_out; 445 } 446 447 /* Setup OS specific network interface */ 448 ixv_setup_interface(dev, adapter); 449 450 error = ixv_allocate_msix(adapter); 451 if (error) { 452 device_printf(dev, "ixv_allocate_msix() failed!\n"); 453 goto err_late; 454 } 455 456 /* Do the stats setup */ 457 ixv_save_stats(adapter); 458 ixv_init_stats(adapter); 459 ixv_add_stats_sysctls(adapter); 460 461 if (adapter->feat_en & IXGBE_FEATURE_NETMAP) 462 ixgbe_netmap_attach(adapter); 463 464 INIT_DEBUGOUT("ixv_attach: end"); 465 466 return (0); 467 468 err_late: 469 ixgbe_free_transmit_structures(adapter); 470 ixgbe_free_receive_structures(adapter); 471 free(adapter->queues, M_DEVBUF); 472 err_out: 473 ixv_free_pci_resources(adapter); 474 IXGBE_CORE_LOCK_DESTROY(adapter); 475 476 return (error); 477 } /* ixv_attach */ 478 479 /************************************************************************ 480 * ixv_detach - Device removal routine 481 * 482 * Called when the driver is being removed. 483 * Stops the adapter and deallocates all the resources 484 * that were allocated for driver operation. 485 * 486 * return 0 on success, positive on failure 487 ************************************************************************/ 488 static int 489 ixv_detach(device_t dev) 490 { 491 struct adapter *adapter = device_get_softc(dev); 492 struct ix_queue *que = adapter->queues; 493 494 INIT_DEBUGOUT("ixv_detach: begin"); 495 496 /* Make sure VLANS are not using driver */ 497 if (adapter->ifp->if_vlantrunk != NULL) { 498 device_printf(dev, "Vlan in use, detach first\n"); 499 return (EBUSY); 500 } 501 502 ether_ifdetach(adapter->ifp); 503 IXGBE_CORE_LOCK(adapter); 504 ixv_stop(adapter); 505 IXGBE_CORE_UNLOCK(adapter); 506 507 for (int i = 0; i < adapter->num_queues; i++, que++) { 508 if (que->tq) { 509 struct tx_ring *txr = que->txr; 510 taskqueue_drain(que->tq, &txr->txq_task); 511 taskqueue_drain(que->tq, &que->que_task); 512 taskqueue_free(que->tq); 513 } 514 } 515 516 /* Drain the Mailbox(link) queue */ 517 if (adapter->tq) { 518 taskqueue_drain(adapter->tq, &adapter->link_task); 519 taskqueue_free(adapter->tq); 520 } 521 522 /* Unregister VLAN events */ 523 if (adapter->vlan_attach != NULL) 524 EVENTHANDLER_DEREGISTER(vlan_config, adapter->vlan_attach); 525 if (adapter->vlan_detach != NULL) 526 EVENTHANDLER_DEREGISTER(vlan_unconfig, adapter->vlan_detach); 527 528 callout_drain(&adapter->timer); 529 530 if (adapter->feat_en & IXGBE_FEATURE_NETMAP) 531 netmap_detach(adapter->ifp); 532 533 ixv_free_pci_resources(adapter); 534 bus_generic_detach(dev); 535 if_free(adapter->ifp); 536 537 ixgbe_free_transmit_structures(adapter); 538 ixgbe_free_receive_structures(adapter); 539 free(adapter->queues, M_DEVBUF); 540 541 IXGBE_CORE_LOCK_DESTROY(adapter); 542 543 return (0); 544 } /* ixv_detach */ 545 546 /************************************************************************ 547 * ixv_init_locked - Init entry point 548 * 549 * Used in two ways: It is used by the stack as an init entry 550 * point in network interface structure. It is also used 551 * by the driver as a hw/sw initialization routine to get 552 * to a consistent state. 553 * 554 * return 0 on success, positive on failure 555 ************************************************************************/ 556 void 557 ixv_init_locked(struct adapter *adapter) 558 { 559 struct ifnet *ifp = adapter->ifp; 560 device_t dev = adapter->dev; 561 struct ixgbe_hw *hw = &adapter->hw; 562 int error = 0; 563 564 INIT_DEBUGOUT("ixv_init_locked: begin"); 565 mtx_assert(&adapter->core_mtx, MA_OWNED); 566 hw->adapter_stopped = FALSE; 567 hw->mac.ops.stop_adapter(hw); 568 callout_stop(&adapter->timer); 569 570 /* reprogram the RAR[0] in case user changed it. */ 571 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); 572 573 /* Get the latest mac address, User can use a LAA */ 574 bcopy(IF_LLADDR(adapter->ifp), hw->mac.addr, 575 IXGBE_ETH_LENGTH_OF_ADDRESS); 576 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, 1); 577 578 /* Prepare transmit descriptors and buffers */ 579 if (ixgbe_setup_transmit_structures(adapter)) { 580 device_printf(dev, "Could not setup transmit structures\n"); 581 ixv_stop(adapter); 582 return; 583 } 584 585 /* Reset VF and renegotiate mailbox API version */ 586 hw->mac.ops.reset_hw(hw); 587 error = ixgbevf_negotiate_api_version(hw, ixgbe_mbox_api_12); 588 if (error) 589 device_printf(dev, "MBX API 1.2 negotiation failed! Error %d\n", 590 error); 591 592 ixv_initialize_transmit_units(adapter); 593 594 /* Setup Multicast table */ 595 ixv_set_multi(adapter); 596 597 /* 598 * Determine the correct mbuf pool 599 * for doing jumbo/headersplit 600 */ 601 if (ifp->if_mtu > ETHERMTU) 602 adapter->rx_mbuf_sz = MJUMPAGESIZE; 603 else 604 adapter->rx_mbuf_sz = MCLBYTES; 605 606 /* Prepare receive descriptors and buffers */ 607 if (ixgbe_setup_receive_structures(adapter)) { 608 device_printf(dev, "Could not setup receive structures\n"); 609 ixv_stop(adapter); 610 return; 611 } 612 613 /* Configure RX settings */ 614 ixv_initialize_receive_units(adapter); 615 616 /* Set the various hardware offload abilities */ 617 ifp->if_hwassist = 0; 618 if (ifp->if_capenable & IFCAP_TSO4) 619 ifp->if_hwassist |= CSUM_TSO; 620 if (ifp->if_capenable & IFCAP_TXCSUM) { 621 ifp->if_hwassist |= (CSUM_TCP | CSUM_UDP); 622 #if __FreeBSD_version >= 800000 623 ifp->if_hwassist |= CSUM_SCTP; 624 #endif 625 } 626 627 /* Set up VLAN offload and filter */ 628 ixv_setup_vlan_support(adapter); 629 630 /* Set up MSI-X routing */ 631 ixv_configure_ivars(adapter); 632 633 /* Set up auto-mask */ 634 IXGBE_WRITE_REG(hw, IXGBE_VTEIAM, IXGBE_EICS_RTX_QUEUE); 635 636 /* Set moderation on the Link interrupt */ 637 IXGBE_WRITE_REG(hw, IXGBE_VTEITR(adapter->vector), IXGBE_LINK_ITR); 638 639 /* Stats init */ 640 ixv_init_stats(adapter); 641 642 /* Config/Enable Link */ 643 hw->mac.ops.check_link(hw, &adapter->link_speed, &adapter->link_up, 644 FALSE); 645 646 /* Start watchdog */ 647 callout_reset(&adapter->timer, hz, ixv_local_timer, adapter); 648 649 /* And now turn on interrupts */ 650 ixv_enable_intr(adapter); 651 652 /* Now inform the stack we're ready */ 653 ifp->if_drv_flags |= IFF_DRV_RUNNING; 654 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 655 656 return; 657 } /* ixv_init_locked */ 658 659 /* 660 * MSI-X Interrupt Handlers and Tasklets 661 */ 662 663 static inline void 664 ixv_enable_queue(struct adapter *adapter, u32 vector) 665 { 666 struct ixgbe_hw *hw = &adapter->hw; 667 u32 queue = 1 << vector; 668 u32 mask; 669 670 mask = (IXGBE_EIMS_RTX_QUEUE & queue); 671 IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask); 672 } /* ixv_enable_queue */ 673 674 static inline void 675 ixv_disable_queue(struct adapter *adapter, u32 vector) 676 { 677 struct ixgbe_hw *hw = &adapter->hw; 678 u64 queue = (u64)(1 << vector); 679 u32 mask; 680 681 mask = (IXGBE_EIMS_RTX_QUEUE & queue); 682 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, mask); 683 } /* ixv_disable_queue */ 684 685 static inline void 686 ixv_rearm_queues(struct adapter *adapter, u64 queues) 687 { 688 u32 mask = (IXGBE_EIMS_RTX_QUEUE & queues); 689 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEICS, mask); 690 } /* ixv_rearm_queues */ 691 692 693 /************************************************************************ 694 * ixv_msix_que - MSI Queue Interrupt Service routine 695 ************************************************************************/ 696 void 697 ixv_msix_que(void *arg) 698 { 699 struct ix_queue *que = arg; 700 struct adapter *adapter = que->adapter; 701 struct ifnet *ifp = adapter->ifp; 702 struct tx_ring *txr = que->txr; 703 struct rx_ring *rxr = que->rxr; 704 bool more; 705 u32 newitr = 0; 706 707 ixv_disable_queue(adapter, que->msix); 708 ++que->irqs; 709 710 more = ixgbe_rxeof(que); 711 712 IXGBE_TX_LOCK(txr); 713 ixgbe_txeof(txr); 714 /* 715 * Make certain that if the stack 716 * has anything queued the task gets 717 * scheduled to handle it. 718 */ 719 if (!ixv_ring_empty(adapter->ifp, txr->br)) 720 ixv_start_locked(ifp, txr); 721 IXGBE_TX_UNLOCK(txr); 722 723 /* Do AIM now? */ 724 725 if (ixv_enable_aim == FALSE) 726 goto no_calc; 727 /* 728 * Do Adaptive Interrupt Moderation: 729 * - Write out last calculated setting 730 * - Calculate based on average size over 731 * the last interval. 732 */ 733 if (que->eitr_setting) 734 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEITR(que->msix), 735 que->eitr_setting); 736 737 que->eitr_setting = 0; 738 739 /* Idle, do nothing */ 740 if ((txr->bytes == 0) && (rxr->bytes == 0)) 741 goto no_calc; 742 743 if ((txr->bytes) && (txr->packets)) 744 newitr = txr->bytes/txr->packets; 745 if ((rxr->bytes) && (rxr->packets)) 746 newitr = max(newitr, (rxr->bytes / rxr->packets)); 747 newitr += 24; /* account for hardware frame, crc */ 748 749 /* set an upper boundary */ 750 newitr = min(newitr, 3000); 751 752 /* Be nice to the mid range */ 753 if ((newitr > 300) && (newitr < 1200)) 754 newitr = (newitr / 3); 755 else 756 newitr = (newitr / 2); 757 758 newitr |= newitr << 16; 759 760 /* save for next interrupt */ 761 que->eitr_setting = newitr; 762 763 /* Reset state */ 764 txr->bytes = 0; 765 txr->packets = 0; 766 rxr->bytes = 0; 767 rxr->packets = 0; 768 769 no_calc: 770 if (more) 771 taskqueue_enqueue(que->tq, &que->que_task); 772 else /* Re-enable this interrupt */ 773 ixv_enable_queue(adapter, que->msix); 774 775 return; 776 } /* ixv_msix_que */ 777 778 /************************************************************************ 779 * ixv_msix_mbx 780 ************************************************************************/ 781 static void 782 ixv_msix_mbx(void *arg) 783 { 784 struct adapter *adapter = arg; 785 struct ixgbe_hw *hw = &adapter->hw; 786 u32 reg; 787 788 ++adapter->link_irq; 789 790 /* First get the cause */ 791 reg = IXGBE_READ_REG(hw, IXGBE_VTEICS); 792 /* Clear interrupt with write */ 793 IXGBE_WRITE_REG(hw, IXGBE_VTEICR, reg); 794 795 /* Link status change */ 796 if (reg & IXGBE_EICR_LSC) 797 taskqueue_enqueue(adapter->tq, &adapter->link_task); 798 799 IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, IXGBE_EIMS_OTHER); 800 801 return; 802 } /* ixv_msix_mbx */ 803 804 /************************************************************************ 805 * ixv_media_status - Media Ioctl callback 806 * 807 * Called whenever the user queries the status of 808 * the interface using ifconfig. 809 ************************************************************************/ 810 static void 811 ixv_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) 812 { 813 struct adapter *adapter = ifp->if_softc; 814 815 INIT_DEBUGOUT("ixv_media_status: begin"); 816 IXGBE_CORE_LOCK(adapter); 817 ixv_update_link_status(adapter); 818 819 ifmr->ifm_status = IFM_AVALID; 820 ifmr->ifm_active = IFM_ETHER; 821 822 if (!adapter->link_active) { 823 IXGBE_CORE_UNLOCK(adapter); 824 return; 825 } 826 827 ifmr->ifm_status |= IFM_ACTIVE; 828 829 switch (adapter->link_speed) { 830 case IXGBE_LINK_SPEED_1GB_FULL: 831 ifmr->ifm_active |= IFM_1000_T | IFM_FDX; 832 break; 833 case IXGBE_LINK_SPEED_10GB_FULL: 834 ifmr->ifm_active |= IFM_10G_T | IFM_FDX; 835 break; 836 case IXGBE_LINK_SPEED_100_FULL: 837 ifmr->ifm_active |= IFM_100_TX | IFM_FDX; 838 break; 839 case IXGBE_LINK_SPEED_10_FULL: 840 ifmr->ifm_active |= IFM_10_T | IFM_FDX; 841 break; 842 } 843 844 IXGBE_CORE_UNLOCK(adapter); 845 846 return; 847 } /* ixv_media_status */ 848 849 /************************************************************************ 850 * ixv_media_change - Media Ioctl callback 851 * 852 * Called when the user changes speed/duplex using 853 * media/mediopt option with ifconfig. 854 ************************************************************************/ 855 static int 856 ixv_media_change(struct ifnet *ifp) 857 { 858 struct adapter *adapter = ifp->if_softc; 859 struct ifmedia *ifm = &adapter->media; 860 861 INIT_DEBUGOUT("ixv_media_change: begin"); 862 863 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 864 return (EINVAL); 865 866 switch (IFM_SUBTYPE(ifm->ifm_media)) { 867 case IFM_AUTO: 868 break; 869 default: 870 device_printf(adapter->dev, "Only auto media type\n"); 871 return (EINVAL); 872 } 873 874 return (0); 875 } /* ixv_media_change */ 876 877 878 /************************************************************************ 879 * ixv_set_multi - Multicast Update 880 * 881 * Called whenever multicast address list is updated. 882 ************************************************************************/ 883 static void 884 ixv_set_multi(struct adapter *adapter) 885 { 886 u8 mta[MAX_NUM_MULTICAST_ADDRESSES * IXGBE_ETH_LENGTH_OF_ADDRESS]; 887 u8 *update_ptr; 888 struct ifmultiaddr *ifma; 889 struct ifnet *ifp = adapter->ifp; 890 int mcnt = 0; 891 892 IOCTL_DEBUGOUT("ixv_set_multi: begin"); 893 894 #if __FreeBSD_version < 800000 895 IF_ADDR_LOCK(ifp); 896 #else 897 if_maddr_rlock(ifp); 898 #endif 899 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 900 if (ifma->ifma_addr->sa_family != AF_LINK) 901 continue; 902 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr), 903 &mta[mcnt * IXGBE_ETH_LENGTH_OF_ADDRESS], 904 IXGBE_ETH_LENGTH_OF_ADDRESS); 905 mcnt++; 906 } 907 #if __FreeBSD_version < 800000 908 IF_ADDR_UNLOCK(ifp); 909 #else 910 if_maddr_runlock(ifp); 911 #endif 912 913 update_ptr = mta; 914 915 adapter->hw.mac.ops.update_mc_addr_list(&adapter->hw, update_ptr, mcnt, 916 ixv_mc_array_itr, TRUE); 917 918 return; 919 } /* ixv_set_multi */ 920 921 /************************************************************************ 922 * ixv_mc_array_itr 923 * 924 * An iterator function needed by the multicast shared code. 925 * It feeds the shared code routine the addresses in the 926 * array of ixv_set_multi() one by one. 927 ************************************************************************/ 928 static u8 * 929 ixv_mc_array_itr(struct ixgbe_hw *hw, u8 **update_ptr, u32 *vmdq) 930 { 931 u8 *addr = *update_ptr; 932 u8 *newptr; 933 *vmdq = 0; 934 935 newptr = addr + IXGBE_ETH_LENGTH_OF_ADDRESS; 936 *update_ptr = newptr; 937 938 return addr; 939 } /* ixv_mc_array_itr */ 940 941 /************************************************************************ 942 * ixv_local_timer - Timer routine 943 * 944 * Checks for link status, updates statistics, 945 * and runs the watchdog check. 946 ************************************************************************/ 947 static void 948 ixv_local_timer(void *arg) 949 { 950 struct adapter *adapter = arg; 951 device_t dev = adapter->dev; 952 struct ix_queue *que = adapter->queues; 953 u64 queues = 0; 954 int hung = 0; 955 956 mtx_assert(&adapter->core_mtx, MA_OWNED); 957 958 ixv_check_link(adapter); 959 960 /* Stats Update */ 961 ixv_update_stats(adapter); 962 963 /* 964 * Check the TX queues status 965 * - mark hung queues so we don't schedule on them 966 * - watchdog only if all queues show hung 967 */ 968 for (int i = 0; i < adapter->num_queues; i++, que++) { 969 /* Keep track of queues with work for soft irq */ 970 if (que->txr->busy) 971 queues |= ((u64)1 << que->me); 972 /* 973 * Each time txeof runs without cleaning, but there 974 * are uncleaned descriptors it increments busy. If 975 * we get to the MAX we declare it hung. 976 */ 977 if (que->busy == IXGBE_QUEUE_HUNG) { 978 ++hung; 979 /* Mark the queue as inactive */ 980 adapter->active_queues &= ~((u64)1 << que->me); 981 continue; 982 } else { 983 /* Check if we've come back from hung */ 984 if ((adapter->active_queues & ((u64)1 << que->me)) == 0) 985 adapter->active_queues |= ((u64)1 << que->me); 986 } 987 if (que->busy >= IXGBE_MAX_TX_BUSY) { 988 device_printf(dev, 989 "Warning queue %d appears to be hung!\n", i); 990 que->txr->busy = IXGBE_QUEUE_HUNG; 991 ++hung; 992 } 993 994 } 995 996 /* Only truly watchdog if all queues show hung */ 997 if (hung == adapter->num_queues) 998 goto watchdog; 999 else if (queues != 0) { /* Force an IRQ on queues with work */ 1000 ixv_rearm_queues(adapter, queues); 1001 } 1002 1003 callout_reset(&adapter->timer, hz, ixv_local_timer, adapter); 1004 1005 return; 1006 1007 watchdog: 1008 1009 device_printf(adapter->dev, "Watchdog timeout -- resetting\n"); 1010 adapter->ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1011 adapter->watchdog_events++; 1012 ixv_init_locked(adapter); 1013 } /* ixv_local_timer */ 1014 1015 /************************************************************************ 1016 * ixv_update_link_status - Update OS on link state 1017 * 1018 * Note: Only updates the OS on the cached link state. 1019 * The real check of the hardware only happens with 1020 * a link interrupt. 1021 ************************************************************************/ 1022 static void 1023 ixv_update_link_status(struct adapter *adapter) 1024 { 1025 struct ifnet *ifp = adapter->ifp; 1026 device_t dev = adapter->dev; 1027 1028 if (adapter->link_up) { 1029 if (adapter->link_active == FALSE) { 1030 if (bootverbose) 1031 device_printf(dev,"Link is up %d Gbps %s \n", 1032 ((adapter->link_speed == 128) ? 10 : 1), 1033 "Full Duplex"); 1034 adapter->link_active = TRUE; 1035 if_link_state_change(ifp, LINK_STATE_UP); 1036 } 1037 } else { /* Link down */ 1038 if (adapter->link_active == TRUE) { 1039 if (bootverbose) 1040 device_printf(dev,"Link is Down\n"); 1041 if_link_state_change(ifp, LINK_STATE_DOWN); 1042 adapter->link_active = FALSE; 1043 } 1044 } 1045 1046 return; 1047 } /* ixv_update_link_status */ 1048 1049 1050 /************************************************************************ 1051 * ixv_stop - Stop the hardware 1052 * 1053 * Disables all traffic on the adapter by issuing a 1054 * global reset on the MAC and deallocates TX/RX buffers. 1055 ************************************************************************/ 1056 static void 1057 ixv_stop(void *arg) 1058 { 1059 struct ifnet *ifp; 1060 struct adapter *adapter = arg; 1061 struct ixgbe_hw *hw = &adapter->hw; 1062 1063 ifp = adapter->ifp; 1064 1065 mtx_assert(&adapter->core_mtx, MA_OWNED); 1066 1067 INIT_DEBUGOUT("ixv_stop: begin\n"); 1068 ixv_disable_intr(adapter); 1069 1070 /* Tell the stack that the interface is no longer active */ 1071 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 1072 1073 hw->mac.ops.reset_hw(hw); 1074 adapter->hw.adapter_stopped = FALSE; 1075 hw->mac.ops.stop_adapter(hw); 1076 callout_stop(&adapter->timer); 1077 1078 /* reprogram the RAR[0] in case user changed it. */ 1079 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); 1080 1081 return; 1082 } /* ixv_stop */ 1083 1084 1085 /************************************************************************ 1086 * ixv_allocate_pci_resources 1087 ************************************************************************/ 1088 static int 1089 ixv_allocate_pci_resources(struct adapter *adapter) 1090 { 1091 device_t dev = adapter->dev; 1092 int rid; 1093 1094 rid = PCIR_BAR(0); 1095 adapter->pci_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 1096 RF_ACTIVE); 1097 1098 if (!(adapter->pci_mem)) { 1099 device_printf(dev, "Unable to allocate bus resource: memory\n"); 1100 return (ENXIO); 1101 } 1102 1103 adapter->osdep.mem_bus_space_tag = rman_get_bustag(adapter->pci_mem); 1104 adapter->osdep.mem_bus_space_handle = 1105 rman_get_bushandle(adapter->pci_mem); 1106 adapter->hw.hw_addr = (u8 *)&adapter->osdep.mem_bus_space_handle; 1107 1108 /* Pick up the tuneable queues */ 1109 adapter->num_queues = ixv_num_queues; 1110 1111 return (0); 1112 } /* ixv_allocate_pci_resources */ 1113 1114 /************************************************************************ 1115 * ixv_free_pci_resources 1116 ************************************************************************/ 1117 static void 1118 ixv_free_pci_resources(struct adapter * adapter) 1119 { 1120 struct ix_queue *que = adapter->queues; 1121 device_t dev = adapter->dev; 1122 int rid, memrid; 1123 1124 memrid = PCIR_BAR(MSIX_82598_BAR); 1125 1126 /* 1127 * There is a slight possibility of a failure mode 1128 * in attach that will result in entering this function 1129 * before interrupt resources have been initialized, and 1130 * in that case we do not want to execute the loops below 1131 * We can detect this reliably by the state of the adapter 1132 * res pointer. 1133 */ 1134 if (adapter->res == NULL) 1135 goto mem; 1136 1137 /* 1138 * Release all msix queue resources: 1139 */ 1140 for (int i = 0; i < adapter->num_queues; i++, que++) { 1141 rid = que->msix + 1; 1142 if (que->tag != NULL) { 1143 bus_teardown_intr(dev, que->res, que->tag); 1144 que->tag = NULL; 1145 } 1146 if (que->res != NULL) 1147 bus_release_resource(dev, SYS_RES_IRQ, rid, que->res); 1148 } 1149 1150 1151 /* Clean the Mailbox interrupt last */ 1152 rid = adapter->vector + 1; 1153 1154 if (adapter->tag != NULL) { 1155 bus_teardown_intr(dev, adapter->res, adapter->tag); 1156 adapter->tag = NULL; 1157 } 1158 if (adapter->res != NULL) 1159 bus_release_resource(dev, SYS_RES_IRQ, rid, adapter->res); 1160 1161 mem: 1162 pci_release_msi(dev); 1163 1164 if (adapter->msix_mem != NULL) 1165 bus_release_resource(dev, SYS_RES_MEMORY, memrid, 1166 adapter->msix_mem); 1167 1168 if (adapter->pci_mem != NULL) 1169 bus_release_resource(dev, SYS_RES_MEMORY, PCIR_BAR(0), 1170 adapter->pci_mem); 1171 1172 return; 1173 } /* ixv_free_pci_resources */ 1174 1175 /************************************************************************ 1176 * ixv_setup_interface 1177 * 1178 * Setup networking device structure and register an interface. 1179 ************************************************************************/ 1180 static void 1181 ixv_setup_interface(device_t dev, struct adapter *adapter) 1182 { 1183 struct ifnet *ifp; 1184 1185 INIT_DEBUGOUT("ixv_setup_interface: begin"); 1186 1187 ifp = adapter->ifp = if_alloc(IFT_ETHER); 1188 if (ifp == NULL) 1189 panic("%s: can not if_alloc()\n", device_get_nameunit(dev)); 1190 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 1191 ifp->if_baudrate = 1000000000; 1192 ifp->if_init = ixv_init; 1193 ifp->if_softc = adapter; 1194 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1195 ifp->if_ioctl = ixv_ioctl; 1196 if_setgetcounterfn(ifp, ixv_get_counter); 1197 /* TSO parameters */ 1198 ifp->if_hw_tsomax = 65518; 1199 ifp->if_hw_tsomaxsegcount = IXGBE_82599_SCATTER; 1200 ifp->if_hw_tsomaxsegsize = 2048; 1201 if (adapter->feat_en & IXGBE_FEATURE_LEGACY_TX) { 1202 ifp->if_start = ixgbe_legacy_start; 1203 ixv_start_locked = ixgbe_legacy_start_locked; 1204 ixv_ring_empty = ixgbe_legacy_ring_empty; 1205 } else { 1206 ifp->if_transmit = ixgbe_mq_start; 1207 ifp->if_qflush = ixgbe_qflush; 1208 ixv_start_locked = ixgbe_mq_start_locked; 1209 ixv_ring_empty = drbr_empty; 1210 } 1211 IFQ_SET_MAXLEN(&ifp->if_snd, adapter->num_tx_desc - 2); 1212 1213 ether_ifattach(ifp, adapter->hw.mac.addr); 1214 1215 adapter->max_frame_size = ifp->if_mtu + IXGBE_MTU_HDR; 1216 1217 /* 1218 * Tell the upper layer(s) we support long frames. 1219 */ 1220 ifp->if_hdrlen = sizeof(struct ether_vlan_header); 1221 1222 /* Set capability flags */ 1223 ifp->if_capabilities |= IFCAP_HWCSUM 1224 | IFCAP_HWCSUM_IPV6 1225 | IFCAP_TSO 1226 | IFCAP_LRO 1227 | IFCAP_VLAN_HWTAGGING 1228 | IFCAP_VLAN_HWTSO 1229 | IFCAP_VLAN_HWCSUM 1230 | IFCAP_JUMBO_MTU 1231 | IFCAP_VLAN_MTU; 1232 1233 /* Enable the above capabilities by default */ 1234 ifp->if_capenable = ifp->if_capabilities; 1235 1236 /* 1237 * Specify the media types supported by this adapter and register 1238 * callbacks to update media and link information 1239 */ 1240 ifmedia_init(&adapter->media, IFM_IMASK, ixv_media_change, 1241 ixv_media_status); 1242 ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL); 1243 ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO); 1244 1245 return; 1246 } /* ixv_setup_interface */ 1247 1248 1249 /************************************************************************ 1250 * ixv_initialize_transmit_units - Enable transmit unit. 1251 ************************************************************************/ 1252 static void 1253 ixv_initialize_transmit_units(struct adapter *adapter) 1254 { 1255 struct tx_ring *txr = adapter->tx_rings; 1256 struct ixgbe_hw *hw = &adapter->hw; 1257 1258 1259 for (int i = 0; i < adapter->num_queues; i++, txr++) { 1260 u64 tdba = txr->txdma.dma_paddr; 1261 u32 txctrl, txdctl; 1262 1263 /* Set WTHRESH to 8, burst writeback */ 1264 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i)); 1265 txdctl |= (8 << 16); 1266 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl); 1267 1268 /* Set the HW Tx Head and Tail indices */ 1269 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VFTDH(i), 0); 1270 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VFTDT(i), 0); 1271 1272 /* Set Tx Tail register */ 1273 txr->tail = IXGBE_VFTDT(i); 1274 1275 /* Set Ring parameters */ 1276 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(i), 1277 (tdba & 0x00000000ffffffffULL)); 1278 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(i), (tdba >> 32)); 1279 IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(i), 1280 adapter->num_tx_desc * sizeof(struct ixgbe_legacy_tx_desc)); 1281 txctrl = IXGBE_READ_REG(hw, IXGBE_VFDCA_TXCTRL(i)); 1282 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN; 1283 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i), txctrl); 1284 1285 /* Now enable */ 1286 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i)); 1287 txdctl |= IXGBE_TXDCTL_ENABLE; 1288 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl); 1289 } 1290 1291 return; 1292 } /* ixv_initialize_transmit_units */ 1293 1294 1295 /************************************************************************ 1296 * ixv_initialize_rss_mapping 1297 ************************************************************************/ 1298 static void 1299 ixv_initialize_rss_mapping(struct adapter *adapter) 1300 { 1301 struct ixgbe_hw *hw = &adapter->hw; 1302 u32 reta = 0, mrqc, rss_key[10]; 1303 int queue_id; 1304 int i, j; 1305 u32 rss_hash_config; 1306 1307 if (adapter->feat_en & IXGBE_FEATURE_RSS) { 1308 /* Fetch the configured RSS key */ 1309 rss_getkey((uint8_t *)&rss_key); 1310 } else { 1311 /* set up random bits */ 1312 arc4rand(&rss_key, sizeof(rss_key), 0); 1313 } 1314 1315 /* Now fill out hash function seeds */ 1316 for (i = 0; i < 10; i++) 1317 IXGBE_WRITE_REG(hw, IXGBE_VFRSSRK(i), rss_key[i]); 1318 1319 /* Set up the redirection table */ 1320 for (i = 0, j = 0; i < 64; i++, j++) { 1321 if (j == adapter->num_queues) 1322 j = 0; 1323 1324 if (adapter->feat_en & IXGBE_FEATURE_RSS) { 1325 /* 1326 * Fetch the RSS bucket id for the given indirection 1327 * entry. Cap it at the number of configured buckets 1328 * (which is num_queues.) 1329 */ 1330 queue_id = rss_get_indirection_to_bucket(i); 1331 queue_id = queue_id % adapter->num_queues; 1332 } else 1333 queue_id = j; 1334 1335 /* 1336 * The low 8 bits are for hash value (n+0); 1337 * The next 8 bits are for hash value (n+1), etc. 1338 */ 1339 reta >>= 8; 1340 reta |= ((uint32_t)queue_id) << 24; 1341 if ((i & 3) == 3) { 1342 IXGBE_WRITE_REG(hw, IXGBE_VFRETA(i >> 2), reta); 1343 reta = 0; 1344 } 1345 } 1346 1347 /* Perform hash on these packet types */ 1348 if (adapter->feat_en & IXGBE_FEATURE_RSS) 1349 rss_hash_config = rss_gethashconfig(); 1350 else { 1351 /* 1352 * Disable UDP - IP fragments aren't currently being handled 1353 * and so we end up with a mix of 2-tuple and 4-tuple 1354 * traffic. 1355 */ 1356 rss_hash_config = RSS_HASHTYPE_RSS_IPV4 1357 | RSS_HASHTYPE_RSS_TCP_IPV4 1358 | RSS_HASHTYPE_RSS_IPV6 1359 | RSS_HASHTYPE_RSS_TCP_IPV6; 1360 } 1361 1362 mrqc = IXGBE_MRQC_RSSEN; 1363 if (rss_hash_config & RSS_HASHTYPE_RSS_IPV4) 1364 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4; 1365 if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV4) 1366 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_TCP; 1367 if (rss_hash_config & RSS_HASHTYPE_RSS_IPV6) 1368 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6; 1369 if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV6) 1370 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_TCP; 1371 if (rss_hash_config & RSS_HASHTYPE_RSS_IPV6_EX) 1372 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_IPV6_EX defined, but not supported\n", 1373 __func__); 1374 if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV6_EX) 1375 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_TCP_IPV6_EX defined, but not supported\n", 1376 __func__); 1377 if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV4) 1378 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP; 1379 if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV4_EX) 1380 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_UDP_IPV4_EX defined, but not supported\n", 1381 __func__); 1382 if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV6) 1383 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP; 1384 if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV6_EX) 1385 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_UDP_IPV6_EX defined, but not supported\n", 1386 __func__); 1387 IXGBE_WRITE_REG(hw, IXGBE_VFMRQC, mrqc); 1388 } /* ixv_initialize_rss_mapping */ 1389 1390 1391 /************************************************************************ 1392 * ixv_initialize_receive_units - Setup receive registers and features. 1393 ************************************************************************/ 1394 static void 1395 ixv_initialize_receive_units(struct adapter *adapter) 1396 { 1397 struct rx_ring *rxr = adapter->rx_rings; 1398 struct ixgbe_hw *hw = &adapter->hw; 1399 struct ifnet *ifp = adapter->ifp; 1400 u32 bufsz, rxcsum, psrtype; 1401 1402 if (ifp->if_mtu > ETHERMTU) 1403 bufsz = 4096 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 1404 else 1405 bufsz = 2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 1406 1407 psrtype = IXGBE_PSRTYPE_TCPHDR 1408 | IXGBE_PSRTYPE_UDPHDR 1409 | IXGBE_PSRTYPE_IPV4HDR 1410 | IXGBE_PSRTYPE_IPV6HDR 1411 | IXGBE_PSRTYPE_L2HDR; 1412 1413 if (adapter->num_queues > 1) 1414 psrtype |= 1 << 29; 1415 1416 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype); 1417 1418 /* Tell PF our max_frame size */ 1419 if (ixgbevf_rlpml_set_vf(hw, adapter->max_frame_size) != 0) { 1420 device_printf(adapter->dev, "There is a problem with the PF setup. It is likely the receive unit for this VF will not function correctly.\n"); 1421 } 1422 1423 for (int i = 0; i < adapter->num_queues; i++, rxr++) { 1424 u64 rdba = rxr->rxdma.dma_paddr; 1425 u32 reg, rxdctl; 1426 1427 /* Disable the queue */ 1428 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)); 1429 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 1430 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), rxdctl); 1431 for (int j = 0; j < 10; j++) { 1432 if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)) & 1433 IXGBE_RXDCTL_ENABLE) 1434 msec_delay(1); 1435 else 1436 break; 1437 } 1438 wmb(); 1439 /* Setup the Base and Length of the Rx Descriptor Ring */ 1440 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(i), 1441 (rdba & 0x00000000ffffffffULL)); 1442 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(i), (rdba >> 32)); 1443 IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(i), 1444 adapter->num_rx_desc * sizeof(union ixgbe_adv_rx_desc)); 1445 1446 /* Reset the ring indices */ 1447 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(rxr->me), 0); 1448 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), 0); 1449 1450 /* Set up the SRRCTL register */ 1451 reg = IXGBE_READ_REG(hw, IXGBE_VFSRRCTL(i)); 1452 reg &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; 1453 reg &= ~IXGBE_SRRCTL_BSIZEPKT_MASK; 1454 reg |= bufsz; 1455 reg |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; 1456 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(i), reg); 1457 1458 /* Capture Rx Tail index */ 1459 rxr->tail = IXGBE_VFRDT(rxr->me); 1460 1461 /* Do the queue enabling last */ 1462 rxdctl |= IXGBE_RXDCTL_ENABLE | IXGBE_RXDCTL_VME; 1463 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), rxdctl); 1464 for (int k = 0; k < 10; k++) { 1465 if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)) & 1466 IXGBE_RXDCTL_ENABLE) 1467 break; 1468 msec_delay(1); 1469 } 1470 wmb(); 1471 1472 /* Set the Tail Pointer */ 1473 /* 1474 * In netmap mode, we must preserve the buffers made 1475 * available to userspace before the if_init() 1476 * (this is true by default on the TX side, because 1477 * init makes all buffers available to userspace). 1478 * 1479 * netmap_reset() and the device specific routines 1480 * (e.g. ixgbe_setup_receive_rings()) map these 1481 * buffers at the end of the NIC ring, so here we 1482 * must set the RDT (tail) register to make sure 1483 * they are not overwritten. 1484 * 1485 * In this driver the NIC ring starts at RDH = 0, 1486 * RDT points to the last slot available for reception (?), 1487 * so RDT = num_rx_desc - 1 means the whole ring is available. 1488 */ 1489 #ifdef DEV_NETMAP 1490 if ((adapter->feat_en & IXGBE_FEATURE_NETMAP) && 1491 (ifp->if_capenable & IFCAP_NETMAP)) { 1492 struct netmap_adapter *na = NA(adapter->ifp); 1493 struct netmap_kring *kring = &na->rx_rings[i]; 1494 int t = na->num_rx_desc - 1 - nm_kr_rxspace(kring); 1495 1496 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), t); 1497 } else 1498 #endif /* DEV_NETMAP */ 1499 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), 1500 adapter->num_rx_desc - 1); 1501 } 1502 1503 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); 1504 1505 ixv_initialize_rss_mapping(adapter); 1506 1507 if (adapter->num_queues > 1) { 1508 /* RSS and RX IPP Checksum are mutually exclusive */ 1509 rxcsum |= IXGBE_RXCSUM_PCSD; 1510 } 1511 1512 if (ifp->if_capenable & IFCAP_RXCSUM) 1513 rxcsum |= IXGBE_RXCSUM_PCSD; 1514 1515 if (!(rxcsum & IXGBE_RXCSUM_PCSD)) 1516 rxcsum |= IXGBE_RXCSUM_IPPCSE; 1517 1518 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); 1519 1520 return; 1521 } /* ixv_initialize_receive_units */ 1522 1523 /************************************************************************ 1524 * ixv_setup_vlan_support 1525 ************************************************************************/ 1526 static void 1527 ixv_setup_vlan_support(struct adapter *adapter) 1528 { 1529 struct ixgbe_hw *hw = &adapter->hw; 1530 u32 ctrl, vid, vfta, retry; 1531 1532 /* 1533 * We get here thru init_locked, meaning 1534 * a soft reset, this has already cleared 1535 * the VFTA and other state, so if there 1536 * have been no vlan's registered do nothing. 1537 */ 1538 if (adapter->num_vlans == 0) 1539 return; 1540 1541 /* Enable the queues */ 1542 for (int i = 0; i < adapter->num_queues; i++) { 1543 ctrl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)); 1544 ctrl |= IXGBE_RXDCTL_VME; 1545 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), ctrl); 1546 /* 1547 * Let Rx path know that it needs to store VLAN tag 1548 * as part of extra mbuf info. 1549 */ 1550 adapter->rx_rings[i].vtag_strip = TRUE; 1551 } 1552 1553 /* 1554 * A soft reset zero's out the VFTA, so 1555 * we need to repopulate it now. 1556 */ 1557 for (int i = 0; i < IXGBE_VFTA_SIZE; i++) { 1558 if (ixv_shadow_vfta[i] == 0) 1559 continue; 1560 vfta = ixv_shadow_vfta[i]; 1561 /* 1562 * Reconstruct the vlan id's 1563 * based on the bits set in each 1564 * of the array ints. 1565 */ 1566 for (int j = 0; j < 32; j++) { 1567 retry = 0; 1568 if ((vfta & (1 << j)) == 0) 1569 continue; 1570 vid = (i * 32) + j; 1571 /* Call the shared code mailbox routine */ 1572 while (hw->mac.ops.set_vfta(hw, vid, 0, TRUE, FALSE)) { 1573 if (++retry > 5) 1574 break; 1575 } 1576 } 1577 } 1578 } /* ixv_setup_vlan_support */ 1579 1580 /************************************************************************ 1581 * ixv_register_vlan 1582 * 1583 * Run via a vlan config EVENT, it enables us to use the 1584 * HW Filter table since we can get the vlan id. This just 1585 * creates the entry in the soft version of the VFTA, init 1586 * will repopulate the real table. 1587 ************************************************************************/ 1588 static void 1589 ixv_register_vlan(void *arg, struct ifnet *ifp, u16 vtag) 1590 { 1591 struct adapter *adapter = ifp->if_softc; 1592 u16 index, bit; 1593 1594 if (ifp->if_softc != arg) /* Not our event */ 1595 return; 1596 1597 if ((vtag == 0) || (vtag > 4095)) /* Invalid */ 1598 return; 1599 1600 IXGBE_CORE_LOCK(adapter); 1601 index = (vtag >> 5) & 0x7F; 1602 bit = vtag & 0x1F; 1603 ixv_shadow_vfta[index] |= (1 << bit); 1604 ++adapter->num_vlans; 1605 /* Re-init to load the changes */ 1606 ixv_init_locked(adapter); 1607 IXGBE_CORE_UNLOCK(adapter); 1608 } /* ixv_register_vlan */ 1609 1610 /************************************************************************ 1611 * ixv_unregister_vlan 1612 * 1613 * Run via a vlan unconfig EVENT, remove our entry 1614 * in the soft vfta. 1615 ************************************************************************/ 1616 static void 1617 ixv_unregister_vlan(void *arg, struct ifnet *ifp, u16 vtag) 1618 { 1619 struct adapter *adapter = ifp->if_softc; 1620 u16 index, bit; 1621 1622 if (ifp->if_softc != arg) 1623 return; 1624 1625 if ((vtag == 0) || (vtag > 4095)) /* Invalid */ 1626 return; 1627 1628 IXGBE_CORE_LOCK(adapter); 1629 index = (vtag >> 5) & 0x7F; 1630 bit = vtag & 0x1F; 1631 ixv_shadow_vfta[index] &= ~(1 << bit); 1632 --adapter->num_vlans; 1633 /* Re-init to load the changes */ 1634 ixv_init_locked(adapter); 1635 IXGBE_CORE_UNLOCK(adapter); 1636 } /* ixv_unregister_vlan */ 1637 1638 /************************************************************************ 1639 * ixv_enable_intr 1640 ************************************************************************/ 1641 static void 1642 ixv_enable_intr(struct adapter *adapter) 1643 { 1644 struct ixgbe_hw *hw = &adapter->hw; 1645 struct ix_queue *que = adapter->queues; 1646 u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE); 1647 1648 1649 IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask); 1650 1651 mask = IXGBE_EIMS_ENABLE_MASK; 1652 mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC); 1653 IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, mask); 1654 1655 for (int i = 0; i < adapter->num_queues; i++, que++) 1656 ixv_enable_queue(adapter, que->msix); 1657 1658 IXGBE_WRITE_FLUSH(hw); 1659 1660 return; 1661 } /* ixv_enable_intr */ 1662 1663 /************************************************************************ 1664 * ixv_disable_intr 1665 ************************************************************************/ 1666 static void 1667 ixv_disable_intr(struct adapter *adapter) 1668 { 1669 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEIAC, 0); 1670 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEIMC, ~0); 1671 IXGBE_WRITE_FLUSH(&adapter->hw); 1672 1673 return; 1674 } /* ixv_disable_intr */ 1675 1676 /************************************************************************ 1677 * ixv_set_ivar 1678 * 1679 * Setup the correct IVAR register for a particular MSI-X interrupt 1680 * - entry is the register array entry 1681 * - vector is the MSI-X vector for this queue 1682 * - type is RX/TX/MISC 1683 ************************************************************************/ 1684 static void 1685 ixv_set_ivar(struct adapter *adapter, u8 entry, u8 vector, s8 type) 1686 { 1687 struct ixgbe_hw *hw = &adapter->hw; 1688 u32 ivar, index; 1689 1690 vector |= IXGBE_IVAR_ALLOC_VAL; 1691 1692 if (type == -1) { /* MISC IVAR */ 1693 ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC); 1694 ivar &= ~0xFF; 1695 ivar |= vector; 1696 IXGBE_WRITE_REG(hw, IXGBE_VTIVAR_MISC, ivar); 1697 } else { /* RX/TX IVARS */ 1698 index = (16 * (entry & 1)) + (8 * type); 1699 ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR(entry >> 1)); 1700 ivar &= ~(0xFF << index); 1701 ivar |= (vector << index); 1702 IXGBE_WRITE_REG(hw, IXGBE_VTIVAR(entry >> 1), ivar); 1703 } 1704 } /* ixv_set_ivar */ 1705 1706 /************************************************************************ 1707 * ixv_configure_ivars 1708 ************************************************************************/ 1709 static void 1710 ixv_configure_ivars(struct adapter *adapter) 1711 { 1712 struct ix_queue *que = adapter->queues; 1713 1714 for (int i = 0; i < adapter->num_queues; i++, que++) { 1715 /* First the RX queue entry */ 1716 ixv_set_ivar(adapter, i, que->msix, 0); 1717 /* ... and the TX */ 1718 ixv_set_ivar(adapter, i, que->msix, 1); 1719 /* Set an initial value in EITR */ 1720 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEITR(que->msix), 1721 IXGBE_EITR_DEFAULT); 1722 } 1723 1724 /* For the mailbox interrupt */ 1725 ixv_set_ivar(adapter, 1, adapter->vector, -1); 1726 } /* ixv_configure_ivars */ 1727 1728 1729 /************************************************************************ 1730 * ixv_get_counter 1731 ************************************************************************/ 1732 static uint64_t 1733 ixv_get_counter(struct ifnet *ifp, ift_counter cnt) 1734 { 1735 struct adapter *adapter; 1736 1737 adapter = if_getsoftc(ifp); 1738 1739 switch (cnt) { 1740 case IFCOUNTER_IPACKETS: 1741 return (adapter->ipackets); 1742 case IFCOUNTER_OPACKETS: 1743 return (adapter->opackets); 1744 case IFCOUNTER_IBYTES: 1745 return (adapter->ibytes); 1746 case IFCOUNTER_OBYTES: 1747 return (adapter->obytes); 1748 case IFCOUNTER_IMCASTS: 1749 return (adapter->imcasts); 1750 default: 1751 return (if_get_counter_default(ifp, cnt)); 1752 } 1753 } /* ixv_get_counter */ 1754 1755 /************************************************************************ 1756 * ixv_save_stats 1757 * 1758 * The VF stats registers never have a truly virgin 1759 * starting point, so this routine tries to make an 1760 * artificial one, marking ground zero on attach as 1761 * it were. 1762 ************************************************************************/ 1763 static void 1764 ixv_save_stats(struct adapter *adapter) 1765 { 1766 if (adapter->stats.vf.vfgprc || adapter->stats.vf.vfgptc) { 1767 adapter->stats.vf.saved_reset_vfgprc += 1768 adapter->stats.vf.vfgprc - adapter->stats.vf.base_vfgprc; 1769 adapter->stats.vf.saved_reset_vfgptc += 1770 adapter->stats.vf.vfgptc - adapter->stats.vf.base_vfgptc; 1771 adapter->stats.vf.saved_reset_vfgorc += 1772 adapter->stats.vf.vfgorc - adapter->stats.vf.base_vfgorc; 1773 adapter->stats.vf.saved_reset_vfgotc += 1774 adapter->stats.vf.vfgotc - adapter->stats.vf.base_vfgotc; 1775 adapter->stats.vf.saved_reset_vfmprc += 1776 adapter->stats.vf.vfmprc - adapter->stats.vf.base_vfmprc; 1777 } 1778 } /* ixv_save_stats */ 1779 1780 /************************************************************************ 1781 * ixv_init_stats 1782 ************************************************************************/ 1783 static void 1784 ixv_init_stats(struct adapter *adapter) 1785 { 1786 struct ixgbe_hw *hw = &adapter->hw; 1787 1788 adapter->stats.vf.last_vfgprc = IXGBE_READ_REG(hw, IXGBE_VFGPRC); 1789 adapter->stats.vf.last_vfgorc = IXGBE_READ_REG(hw, IXGBE_VFGORC_LSB); 1790 adapter->stats.vf.last_vfgorc |= 1791 (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGORC_MSB))) << 32); 1792 1793 adapter->stats.vf.last_vfgptc = IXGBE_READ_REG(hw, IXGBE_VFGPTC); 1794 adapter->stats.vf.last_vfgotc = IXGBE_READ_REG(hw, IXGBE_VFGOTC_LSB); 1795 adapter->stats.vf.last_vfgotc |= 1796 (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGOTC_MSB))) << 32); 1797 1798 adapter->stats.vf.last_vfmprc = IXGBE_READ_REG(hw, IXGBE_VFMPRC); 1799 1800 adapter->stats.vf.base_vfgprc = adapter->stats.vf.last_vfgprc; 1801 adapter->stats.vf.base_vfgorc = adapter->stats.vf.last_vfgorc; 1802 adapter->stats.vf.base_vfgptc = adapter->stats.vf.last_vfgptc; 1803 adapter->stats.vf.base_vfgotc = adapter->stats.vf.last_vfgotc; 1804 adapter->stats.vf.base_vfmprc = adapter->stats.vf.last_vfmprc; 1805 } /* ixv_init_stats */ 1806 1807 #define UPDATE_STAT_32(reg, last, count) \ 1808 { \ 1809 u32 current = IXGBE_READ_REG(hw, reg); \ 1810 if (current < last) \ 1811 count += 0x100000000LL; \ 1812 last = current; \ 1813 count &= 0xFFFFFFFF00000000LL; \ 1814 count |= current; \ 1815 } 1816 1817 #define UPDATE_STAT_36(lsb, msb, last, count) \ 1818 { \ 1819 u64 cur_lsb = IXGBE_READ_REG(hw, lsb); \ 1820 u64 cur_msb = IXGBE_READ_REG(hw, msb); \ 1821 u64 current = ((cur_msb << 32) | cur_lsb); \ 1822 if (current < last) \ 1823 count += 0x1000000000LL; \ 1824 last = current; \ 1825 count &= 0xFFFFFFF000000000LL; \ 1826 count |= current; \ 1827 } 1828 1829 /************************************************************************ 1830 * ixv_update_stats - Update the board statistics counters. 1831 ************************************************************************/ 1832 void 1833 ixv_update_stats(struct adapter *adapter) 1834 { 1835 struct ixgbe_hw *hw = &adapter->hw; 1836 struct ixgbevf_hw_stats *stats = &adapter->stats.vf; 1837 1838 UPDATE_STAT_32(IXGBE_VFGPRC, adapter->stats.vf.last_vfgprc, 1839 adapter->stats.vf.vfgprc); 1840 UPDATE_STAT_32(IXGBE_VFGPTC, adapter->stats.vf.last_vfgptc, 1841 adapter->stats.vf.vfgptc); 1842 UPDATE_STAT_36(IXGBE_VFGORC_LSB, IXGBE_VFGORC_MSB, 1843 adapter->stats.vf.last_vfgorc, adapter->stats.vf.vfgorc); 1844 UPDATE_STAT_36(IXGBE_VFGOTC_LSB, IXGBE_VFGOTC_MSB, 1845 adapter->stats.vf.last_vfgotc, adapter->stats.vf.vfgotc); 1846 UPDATE_STAT_32(IXGBE_VFMPRC, adapter->stats.vf.last_vfmprc, 1847 adapter->stats.vf.vfmprc); 1848 1849 /* Fill out the OS statistics structure */ 1850 IXGBE_SET_IPACKETS(adapter, stats->vfgprc); 1851 IXGBE_SET_OPACKETS(adapter, stats->vfgptc); 1852 IXGBE_SET_IBYTES(adapter, stats->vfgorc); 1853 IXGBE_SET_OBYTES(adapter, stats->vfgotc); 1854 IXGBE_SET_IMCASTS(adapter, stats->vfmprc); 1855 } /* ixv_update_stats */ 1856 1857 /************************************************************************ 1858 * ixv_add_stats_sysctls - Add statistic sysctls for the VF. 1859 ************************************************************************/ 1860 static void 1861 ixv_add_stats_sysctls(struct adapter *adapter) 1862 { 1863 device_t dev = adapter->dev; 1864 struct tx_ring *txr = adapter->tx_rings; 1865 struct rx_ring *rxr = adapter->rx_rings; 1866 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev); 1867 struct sysctl_oid *tree = device_get_sysctl_tree(dev); 1868 struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree); 1869 struct ixgbevf_hw_stats *stats = &adapter->stats.vf; 1870 struct sysctl_oid *stat_node, *queue_node; 1871 struct sysctl_oid_list *stat_list, *queue_list; 1872 1873 #define QUEUE_NAME_LEN 32 1874 char namebuf[QUEUE_NAME_LEN]; 1875 1876 /* Driver Statistics */ 1877 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "dropped", 1878 CTLFLAG_RD, &adapter->dropped_pkts, "Driver dropped packets"); 1879 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "mbuf_defrag_failed", 1880 CTLFLAG_RD, &adapter->mbuf_defrag_failed, "m_defrag() failed"); 1881 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "watchdog_events", 1882 CTLFLAG_RD, &adapter->watchdog_events, "Watchdog timeouts"); 1883 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "link_irq", 1884 CTLFLAG_RD, &adapter->link_irq, "Link MSI-X IRQ Handled"); 1885 1886 for (int i = 0; i < adapter->num_queues; i++, txr++) { 1887 snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i); 1888 queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, namebuf, 1889 CTLFLAG_RD, NULL, "Queue Name"); 1890 queue_list = SYSCTL_CHILDREN(queue_node); 1891 1892 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "irqs", 1893 CTLFLAG_RD, &(adapter->queues[i].irqs), "IRQs on queue"); 1894 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "no_tx_dma_setup", 1895 CTLFLAG_RD, &(txr->no_tx_dma_setup), 1896 "Driver Tx DMA failure in Tx"); 1897 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "tx_no_desc", 1898 CTLFLAG_RD, &(txr->no_desc_avail), 1899 "Not-enough-descriptors count: TX"); 1900 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "tx_packets", 1901 CTLFLAG_RD, &(txr->total_packets), "TX Packets"); 1902 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "br_drops", 1903 CTLFLAG_RD, &(txr->br->br_drops), 1904 "Packets dropped in buf_ring"); 1905 } 1906 1907 for (int i = 0; i < adapter->num_queues; i++, rxr++) { 1908 snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i); 1909 queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, namebuf, 1910 CTLFLAG_RD, NULL, "Queue Name"); 1911 queue_list = SYSCTL_CHILDREN(queue_node); 1912 1913 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "rx_packets", 1914 CTLFLAG_RD, &(rxr->rx_packets), "RX packets"); 1915 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "rx_bytes", 1916 CTLFLAG_RD, &(rxr->rx_bytes), "RX bytes"); 1917 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "rx_discarded", 1918 CTLFLAG_RD, &(rxr->rx_discarded), "Discarded RX packets"); 1919 } 1920 1921 stat_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "mac", 1922 CTLFLAG_RD, NULL, "VF Statistics (read from HW registers)"); 1923 stat_list = SYSCTL_CHILDREN(stat_node); 1924 1925 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_rcvd", 1926 CTLFLAG_RD, &stats->vfgprc, "Good Packets Received"); 1927 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_rcvd", 1928 CTLFLAG_RD, &stats->vfgorc, "Good Octets Received"); 1929 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_rcvd", 1930 CTLFLAG_RD, &stats->vfmprc, "Multicast Packets Received"); 1931 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_txd", 1932 CTLFLAG_RD, &stats->vfgptc, "Good Packets Transmitted"); 1933 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_txd", 1934 CTLFLAG_RD, &stats->vfgotc, "Good Octets Transmitted"); 1935 } /* ixv_add_stats_sysctls */ 1936 1937 /************************************************************************ 1938 * ixv_set_sysctl_value 1939 ************************************************************************/ 1940 static void 1941 ixv_set_sysctl_value(struct adapter *adapter, const char *name, 1942 const char *description, int *limit, int value) 1943 { 1944 *limit = value; 1945 SYSCTL_ADD_INT(device_get_sysctl_ctx(adapter->dev), 1946 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)), 1947 OID_AUTO, name, CTLFLAG_RW, limit, value, description); 1948 } /* ixv_set_sysctl_value */ 1949 1950 /************************************************************************ 1951 * ixv_print_debug_info 1952 * 1953 * Called only when em_display_debug_stats is enabled. 1954 * Provides a way to take a look at important statistics 1955 * maintained by the driver and hardware. 1956 ************************************************************************/ 1957 static void 1958 ixv_print_debug_info(struct adapter *adapter) 1959 { 1960 device_t dev = adapter->dev; 1961 struct ixgbe_hw *hw = &adapter->hw; 1962 struct ix_queue *que = adapter->queues; 1963 struct rx_ring *rxr; 1964 struct tx_ring *txr; 1965 struct lro_ctrl *lro; 1966 1967 device_printf(dev, "Error Byte Count = %u \n", 1968 IXGBE_READ_REG(hw, IXGBE_ERRBC)); 1969 1970 for (int i = 0; i < adapter->num_queues; i++, que++) { 1971 txr = que->txr; 1972 rxr = que->rxr; 1973 lro = &rxr->lro; 1974 device_printf(dev, "QUE(%d) IRQs Handled: %lu\n", 1975 que->msix, (long)que->irqs); 1976 device_printf(dev, "RX(%d) Packets Received: %lld\n", 1977 rxr->me, (long long)rxr->rx_packets); 1978 device_printf(dev, "RX(%d) Bytes Received: %lu\n", 1979 rxr->me, (long)rxr->rx_bytes); 1980 device_printf(dev, "RX(%d) LRO Queued= %lld\n", 1981 rxr->me, (long long)lro->lro_queued); 1982 device_printf(dev, "RX(%d) LRO Flushed= %lld\n", 1983 rxr->me, (long long)lro->lro_flushed); 1984 device_printf(dev, "TX(%d) Packets Sent: %lu\n", 1985 txr->me, (long)txr->total_packets); 1986 device_printf(dev, "TX(%d) NO Desc Avail: %lu\n", 1987 txr->me, (long)txr->no_desc_avail); 1988 } 1989 1990 device_printf(dev, "MBX IRQ Handled: %lu\n", (long)adapter->link_irq); 1991 } /* ixv_print_debug_info */ 1992 1993 /************************************************************************ 1994 * ixv_sysctl_debug 1995 ************************************************************************/ 1996 static int 1997 ixv_sysctl_debug(SYSCTL_HANDLER_ARGS) 1998 { 1999 struct adapter *adapter; 2000 int error, result; 2001 2002 result = -1; 2003 error = sysctl_handle_int(oidp, &result, 0, req); 2004 2005 if (error || !req->newptr) 2006 return (error); 2007 2008 if (result == 1) { 2009 adapter = (struct adapter *)arg1; 2010 ixv_print_debug_info(adapter); 2011 } 2012 2013 return error; 2014 } /* ixv_sysctl_debug */ 2015 2016 /************************************************************************ 2017 * ixv_init_device_features 2018 ************************************************************************/ 2019 static void 2020 ixv_init_device_features(struct adapter *adapter) 2021 { 2022 adapter->feat_cap = IXGBE_FEATURE_NETMAP 2023 | IXGBE_FEATURE_VF 2024 | IXGBE_FEATURE_RSS 2025 | IXGBE_FEATURE_LEGACY_TX; 2026 2027 /* A tad short on feature flags for VFs, atm. */ 2028 switch (adapter->hw.mac.type) { 2029 case ixgbe_mac_82599_vf: 2030 break; 2031 case ixgbe_mac_X540_vf: 2032 break; 2033 case ixgbe_mac_X550_vf: 2034 case ixgbe_mac_X550EM_x_vf: 2035 case ixgbe_mac_X550EM_a_vf: 2036 adapter->feat_cap |= IXGBE_FEATURE_NEEDS_CTXD; 2037 break; 2038 default: 2039 break; 2040 } 2041 2042 /* Enabled by default... */ 2043 /* Is a virtual function (VF) */ 2044 if (adapter->feat_cap & IXGBE_FEATURE_VF) 2045 adapter->feat_en |= IXGBE_FEATURE_VF; 2046 /* Netmap */ 2047 if (adapter->feat_cap & IXGBE_FEATURE_NETMAP) 2048 adapter->feat_en |= IXGBE_FEATURE_NETMAP; 2049 /* Receive-Side Scaling (RSS) */ 2050 if (adapter->feat_cap & IXGBE_FEATURE_RSS) 2051 adapter->feat_en |= IXGBE_FEATURE_RSS; 2052 /* Needs advanced context descriptor regardless of offloads req'd */ 2053 if (adapter->feat_cap & IXGBE_FEATURE_NEEDS_CTXD) 2054 adapter->feat_en |= IXGBE_FEATURE_NEEDS_CTXD; 2055 2056 /* Enabled via sysctl... */ 2057 /* Legacy (single queue) transmit */ 2058 if ((adapter->feat_cap & IXGBE_FEATURE_LEGACY_TX) && 2059 ixv_enable_legacy_tx) 2060 adapter->feat_en |= IXGBE_FEATURE_LEGACY_TX; 2061 } /* ixv_init_device_features */ 2062 2063 /************************************************************************ 2064 * ixv_shutdown - Shutdown entry point 2065 ************************************************************************/ 2066 static int 2067 ixv_shutdown(device_t dev) 2068 { 2069 struct adapter *adapter = device_get_softc(dev); 2070 IXGBE_CORE_LOCK(adapter); 2071 ixv_stop(adapter); 2072 IXGBE_CORE_UNLOCK(adapter); 2073 2074 return (0); 2075 } /* ixv_shutdown */ 2076 2077 2078 /************************************************************************ 2079 * ixv_ioctl - Ioctl entry point 2080 * 2081 * Called when the user wants to configure the interface. 2082 * 2083 * return 0 on success, positive on failure 2084 ************************************************************************/ 2085 static int 2086 ixv_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 2087 { 2088 struct adapter *adapter = ifp->if_softc; 2089 struct ifreq *ifr = (struct ifreq *)data; 2090 #if defined(INET) || defined(INET6) 2091 struct ifaddr *ifa = (struct ifaddr *)data; 2092 bool avoid_reset = FALSE; 2093 #endif 2094 int error = 0; 2095 2096 switch (command) { 2097 2098 case SIOCSIFADDR: 2099 #ifdef INET 2100 if (ifa->ifa_addr->sa_family == AF_INET) 2101 avoid_reset = TRUE; 2102 #endif 2103 #ifdef INET6 2104 if (ifa->ifa_addr->sa_family == AF_INET6) 2105 avoid_reset = TRUE; 2106 #endif 2107 #if defined(INET) || defined(INET6) 2108 /* 2109 * Calling init results in link renegotiation, 2110 * so we avoid doing it when possible. 2111 */ 2112 if (avoid_reset) { 2113 ifp->if_flags |= IFF_UP; 2114 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 2115 ixv_init(adapter); 2116 if (!(ifp->if_flags & IFF_NOARP)) 2117 arp_ifinit(ifp, ifa); 2118 } else 2119 error = ether_ioctl(ifp, command, data); 2120 break; 2121 #endif 2122 case SIOCSIFMTU: 2123 IOCTL_DEBUGOUT("ioctl: SIOCSIFMTU (Set Interface MTU)"); 2124 if (ifr->ifr_mtu > IXGBE_MAX_MTU) { 2125 error = EINVAL; 2126 } else { 2127 IXGBE_CORE_LOCK(adapter); 2128 ifp->if_mtu = ifr->ifr_mtu; 2129 adapter->max_frame_size = ifp->if_mtu + IXGBE_MTU_HDR; 2130 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2131 ixv_init_locked(adapter); 2132 IXGBE_CORE_UNLOCK(adapter); 2133 } 2134 break; 2135 case SIOCSIFFLAGS: 2136 IOCTL_DEBUGOUT("ioctl: SIOCSIFFLAGS (Set Interface Flags)"); 2137 IXGBE_CORE_LOCK(adapter); 2138 if (ifp->if_flags & IFF_UP) { 2139 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2140 ixv_init_locked(adapter); 2141 } else 2142 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2143 ixv_stop(adapter); 2144 adapter->if_flags = ifp->if_flags; 2145 IXGBE_CORE_UNLOCK(adapter); 2146 break; 2147 case SIOCADDMULTI: 2148 case SIOCDELMULTI: 2149 IOCTL_DEBUGOUT("ioctl: SIOC(ADD|DEL)MULTI"); 2150 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2151 IXGBE_CORE_LOCK(adapter); 2152 ixv_disable_intr(adapter); 2153 ixv_set_multi(adapter); 2154 ixv_enable_intr(adapter); 2155 IXGBE_CORE_UNLOCK(adapter); 2156 } 2157 break; 2158 case SIOCSIFMEDIA: 2159 case SIOCGIFMEDIA: 2160 IOCTL_DEBUGOUT("ioctl: SIOCxIFMEDIA (Get/Set Interface Media)"); 2161 error = ifmedia_ioctl(ifp, ifr, &adapter->media, command); 2162 break; 2163 case SIOCSIFCAP: 2164 { 2165 int mask = ifr->ifr_reqcap ^ ifp->if_capenable; 2166 IOCTL_DEBUGOUT("ioctl: SIOCSIFCAP (Set Capabilities)"); 2167 if (mask & IFCAP_HWCSUM) 2168 ifp->if_capenable ^= IFCAP_HWCSUM; 2169 if (mask & IFCAP_TSO4) 2170 ifp->if_capenable ^= IFCAP_TSO4; 2171 if (mask & IFCAP_LRO) 2172 ifp->if_capenable ^= IFCAP_LRO; 2173 if (mask & IFCAP_VLAN_HWTAGGING) 2174 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; 2175 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2176 IXGBE_CORE_LOCK(adapter); 2177 ixv_init_locked(adapter); 2178 IXGBE_CORE_UNLOCK(adapter); 2179 } 2180 VLAN_CAPABILITIES(ifp); 2181 break; 2182 } 2183 2184 default: 2185 IOCTL_DEBUGOUT1("ioctl: UNKNOWN (0x%X)\n", (int)command); 2186 error = ether_ioctl(ifp, command, data); 2187 break; 2188 } 2189 2190 return (error); 2191 } /* ixv_ioctl */ 2192 2193 /************************************************************************ 2194 * ixv_init 2195 ************************************************************************/ 2196 static void 2197 ixv_init(void *arg) 2198 { 2199 struct adapter *adapter = arg; 2200 2201 IXGBE_CORE_LOCK(adapter); 2202 ixv_init_locked(adapter); 2203 IXGBE_CORE_UNLOCK(adapter); 2204 2205 return; 2206 } /* ixv_init */ 2207 2208 2209 /************************************************************************ 2210 * ixv_handle_que 2211 ************************************************************************/ 2212 static void 2213 ixv_handle_que(void *context, int pending) 2214 { 2215 struct ix_queue *que = context; 2216 struct adapter *adapter = que->adapter; 2217 struct tx_ring *txr = que->txr; 2218 struct ifnet *ifp = adapter->ifp; 2219 bool more; 2220 2221 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2222 more = ixgbe_rxeof(que); 2223 IXGBE_TX_LOCK(txr); 2224 ixgbe_txeof(txr); 2225 if (!ixv_ring_empty(ifp, txr->br)) 2226 ixv_start_locked(ifp, txr); 2227 IXGBE_TX_UNLOCK(txr); 2228 if (more) { 2229 taskqueue_enqueue(que->tq, &que->que_task); 2230 return; 2231 } 2232 } 2233 2234 /* Re-enable this interrupt */ 2235 ixv_enable_queue(adapter, que->msix); 2236 2237 return; 2238 } /* ixv_handle_que */ 2239 2240 /************************************************************************ 2241 * ixv_allocate_msix - Setup MSI-X Interrupt resources and handlers 2242 ************************************************************************/ 2243 static int 2244 ixv_allocate_msix(struct adapter *adapter) 2245 { 2246 device_t dev = adapter->dev; 2247 struct ix_queue *que = adapter->queues; 2248 struct tx_ring *txr = adapter->tx_rings; 2249 int error, msix_ctrl, rid, vector = 0; 2250 2251 for (int i = 0; i < adapter->num_queues; i++, vector++, que++, txr++) { 2252 rid = vector + 1; 2253 que->res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 2254 RF_SHAREABLE | RF_ACTIVE); 2255 if (que->res == NULL) { 2256 device_printf(dev, "Unable to allocate bus resource: que interrupt [%d]\n", 2257 vector); 2258 return (ENXIO); 2259 } 2260 /* Set the handler function */ 2261 error = bus_setup_intr(dev, que->res, 2262 INTR_TYPE_NET | INTR_MPSAFE, NULL, 2263 ixv_msix_que, que, &que->tag); 2264 if (error) { 2265 que->res = NULL; 2266 device_printf(dev, "Failed to register QUE handler"); 2267 return (error); 2268 } 2269 #if __FreeBSD_version >= 800504 2270 bus_describe_intr(dev, que->res, que->tag, "que %d", i); 2271 #endif 2272 que->msix = vector; 2273 adapter->active_queues |= (u64)(1 << que->msix); 2274 /* 2275 * Bind the MSI-X vector, and thus the 2276 * ring to the corresponding CPU. 2277 */ 2278 if (adapter->num_queues > 1) 2279 bus_bind_intr(dev, que->res, i); 2280 TASK_INIT(&txr->txq_task, 0, ixgbe_deferred_mq_start, txr); 2281 TASK_INIT(&que->que_task, 0, ixv_handle_que, que); 2282 que->tq = taskqueue_create_fast("ixv_que", M_NOWAIT, 2283 taskqueue_thread_enqueue, &que->tq); 2284 taskqueue_start_threads(&que->tq, 1, PI_NET, "%s que", 2285 device_get_nameunit(adapter->dev)); 2286 } 2287 2288 /* and Mailbox */ 2289 rid = vector + 1; 2290 adapter->res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 2291 RF_SHAREABLE | RF_ACTIVE); 2292 if (!adapter->res) { 2293 device_printf(dev, 2294 "Unable to allocate bus resource: MBX interrupt [%d]\n", 2295 rid); 2296 return (ENXIO); 2297 } 2298 /* Set the mbx handler function */ 2299 error = bus_setup_intr(dev, adapter->res, INTR_TYPE_NET | INTR_MPSAFE, 2300 NULL, ixv_msix_mbx, adapter, &adapter->tag); 2301 if (error) { 2302 adapter->res = NULL; 2303 device_printf(dev, "Failed to register LINK handler"); 2304 return (error); 2305 } 2306 #if __FreeBSD_version >= 800504 2307 bus_describe_intr(dev, adapter->res, adapter->tag, "mbx"); 2308 #endif 2309 adapter->vector = vector; 2310 /* Tasklets for Mailbox */ 2311 TASK_INIT(&adapter->link_task, 0, ixv_handle_link, adapter); 2312 adapter->tq = taskqueue_create_fast("ixv_mbx", M_NOWAIT, 2313 taskqueue_thread_enqueue, &adapter->tq); 2314 taskqueue_start_threads(&adapter->tq, 1, PI_NET, "%s mbxq", 2315 device_get_nameunit(adapter->dev)); 2316 /* 2317 * Due to a broken design QEMU will fail to properly 2318 * enable the guest for MSI-X unless the vectors in 2319 * the table are all set up, so we must rewrite the 2320 * ENABLE in the MSI-X control register again at this 2321 * point to cause it to successfully initialize us. 2322 */ 2323 if (adapter->hw.mac.type == ixgbe_mac_82599_vf) { 2324 pci_find_cap(dev, PCIY_MSIX, &rid); 2325 rid += PCIR_MSIX_CTRL; 2326 msix_ctrl = pci_read_config(dev, rid, 2); 2327 msix_ctrl |= PCIM_MSIXCTRL_MSIX_ENABLE; 2328 pci_write_config(dev, rid, msix_ctrl, 2); 2329 } 2330 2331 return (0); 2332 } /* ixv_allocate_msix */ 2333 2334 /************************************************************************ 2335 * ixv_configure_interrupts - Setup MSI-X resources 2336 * 2337 * Note: The VF device MUST use MSI-X, there is no fallback. 2338 ************************************************************************/ 2339 static int 2340 ixv_configure_interrupts(struct adapter *adapter) 2341 { 2342 device_t dev = adapter->dev; 2343 int rid, want, msgs; 2344 2345 /* Must have at least 2 MSI-X vectors */ 2346 msgs = pci_msix_count(dev); 2347 if (msgs < 2) 2348 goto out; 2349 rid = PCIR_BAR(3); 2350 adapter->msix_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 2351 RF_ACTIVE); 2352 if (adapter->msix_mem == NULL) { 2353 device_printf(adapter->dev, "Unable to map MSI-X table \n"); 2354 goto out; 2355 } 2356 2357 /* 2358 * Want vectors for the queues, 2359 * plus an additional for mailbox. 2360 */ 2361 want = adapter->num_queues + 1; 2362 if (want > msgs) { 2363 want = msgs; 2364 adapter->num_queues = msgs - 1; 2365 } else 2366 msgs = want; 2367 if ((pci_alloc_msix(dev, &msgs) == 0) && (msgs == want)) { 2368 device_printf(adapter->dev, 2369 "Using MSI-X interrupts with %d vectors\n", want); 2370 /* reflect correct sysctl value */ 2371 ixv_num_queues = adapter->num_queues; 2372 2373 return (0); 2374 } 2375 /* Release in case alloc was insufficient */ 2376 pci_release_msi(dev); 2377 out: 2378 if (adapter->msix_mem != NULL) { 2379 bus_release_resource(dev, SYS_RES_MEMORY, rid, 2380 adapter->msix_mem); 2381 adapter->msix_mem = NULL; 2382 } 2383 device_printf(adapter->dev, "MSI-X config error\n"); 2384 2385 return (ENXIO); 2386 } /* ixv_configure_interrupts */ 2387 2388 2389 /************************************************************************ 2390 * ixv_handle_link - Tasklet handler for MSI-X MBX interrupts 2391 * 2392 * Done outside of interrupt context since the driver might sleep 2393 ************************************************************************/ 2394 static void 2395 ixv_handle_link(void *context, int pending) 2396 { 2397 struct adapter *adapter = context; 2398 2399 adapter->hw.mac.ops.check_link(&adapter->hw, &adapter->link_speed, 2400 &adapter->link_up, FALSE); 2401 ixv_update_link_status(adapter); 2402 } /* ixv_handle_link */ 2403 2404 /************************************************************************ 2405 * ixv_check_link - Used in the local timer to poll for link changes 2406 ************************************************************************/ 2407 static void 2408 ixv_check_link(struct adapter *adapter) 2409 { 2410 adapter->hw.mac.get_link_status = TRUE; 2411 2412 adapter->hw.mac.ops.check_link(&adapter->hw, &adapter->link_speed, 2413 &adapter->link_up, FALSE); 2414 ixv_update_link_status(adapter); 2415 } /* ixv_check_link */ 2416 2417