sys/dev/ixgbe/if_ixv.c

   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 #include "opt_inet.h"
  37 #include "opt_inet6.h"
  38
  39 #include "ixgbe.h"
  40 #include "ifdi_if.h"
  41
  42 #include <net/netmap.h>
  43 #include <dev/netmap/netmap_kern.h>
  44
  45 /************************************************************************
  46  * Driver version
  47  ************************************************************************/
  48 char ixv_driver_version[] = "2.0.1-k";
  49
  50 /************************************************************************
  51  * PCI Device ID Table
  52  *
  53  *   Used by probe to select devices to load on
  54  *   Last field stores an index into ixv_strings
  55  *   Last entry must be all 0s
  56  *
  57  *   { Vendor ID, Device ID, SubVendor ID, SubDevice ID, String Index }
  58  ************************************************************************/
  59 static pci_vendor_info_t ixv_vendor_info_array[] =
  60 {
  61         PVID(IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_82599_VF, "Intel(R) PRO/10GbE Virtual Function Network Driver"),
  62         PVID(IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X540_VF, "Intel(R) PRO/10GbE Virtual Function Network Driver"),
  63         PVID(IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X550_VF, "Intel(R) PRO/10GbE Virtual Function Network Driver"),
  64         PVID(IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X550EM_X_VF, "Intel(R) PRO/10GbE Virtual Function Network Driver"),
  65         PVID(IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X550EM_A_VF, "Intel(R) PRO/10GbE Virtual Function Network Driver"),
  66         /* required last entry */
  67 PVID_END
  68 };
  69
  70 /************************************************************************
  71  * Function prototypes
  72  ************************************************************************/
  73 static void     *ixv_register(device_t dev);
  74 static int      ixv_if_attach_pre(if_ctx_t ctx);
  75 static int      ixv_if_attach_post(if_ctx_t ctx);
  76 static int      ixv_if_detach(if_ctx_t ctx);
  77
  78 static int      ixv_if_rx_queue_intr_enable(if_ctx_t ctx, uint16_t qid);
  79 static int      ixv_if_tx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs, int nqs, int nqsets);
  80 static int      ixv_if_rx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs, int nqs, int nqsets);
  81 static void     ixv_if_queues_free(if_ctx_t ctx);
  82 static void     ixv_identify_hardware(if_ctx_t ctx);
  83 static void     ixv_init_device_features(struct adapter *);
  84 static int      ixv_allocate_pci_resources(if_ctx_t ctx);
  85 static void     ixv_free_pci_resources(if_ctx_t ctx);
  86 static int      ixv_setup_interface(if_ctx_t ctx);
  87 static void     ixv_if_media_status(if_ctx_t , struct ifmediareq *);
  88 static int      ixv_if_media_change(if_ctx_t ctx);
  89 static void     ixv_if_update_admin_status(if_ctx_t ctx);
  90 static int      ixv_if_msix_intr_assign(if_ctx_t ctx, int msix);
  91
  92 static int      ixv_if_mtu_set(if_ctx_t ctx, uint32_t mtu);
  93 static void     ixv_if_init(if_ctx_t ctx);
  94 static void     ixv_if_local_timer(if_ctx_t ctx, uint16_t qid);
  95 static void     ixv_if_stop(if_ctx_t ctx);
  96 static int      ixv_negotiate_api(struct adapter *);
  97
  98 static void     ixv_initialize_transmit_units(if_ctx_t ctx);
  99 static void     ixv_initialize_receive_units(if_ctx_t ctx);
 100 static void     ixv_initialize_rss_mapping(struct adapter *);
 101
 102 static void     ixv_setup_vlan_support(if_ctx_t ctx);
 103 static void     ixv_configure_ivars(struct adapter *);
 104 static void     ixv_if_enable_intr(if_ctx_t ctx);
 105 static void     ixv_if_disable_intr(if_ctx_t ctx);
 106 static void     ixv_if_multi_set(if_ctx_t ctx);
 107
 108 static void     ixv_if_register_vlan(if_ctx_t, u16);
 109 static void     ixv_if_unregister_vlan(if_ctx_t, u16);
 110
 111 static uint64_t ixv_if_get_counter(if_ctx_t, ift_counter);
 112
 113 static void     ixv_save_stats(struct adapter *);
 114 static void     ixv_init_stats(struct adapter *);
 115 static void     ixv_update_stats(struct adapter *);
 116 static void     ixv_add_stats_sysctls(struct adapter *adapter);
 117
 118 static int      ixv_sysctl_debug(SYSCTL_HANDLER_ARGS);
 119 static void     ixv_set_ivar(struct adapter *, u8, u8, s8);
 120
 121 static u8       *ixv_mc_array_itr(struct ixgbe_hw *, u8 **, u32 *);
 122
 123 /* The MSI-X Interrupt handlers */
 124 static int      ixv_msix_que(void *);
 125 static int      ixv_msix_mbx(void *);
 126
 127 /************************************************************************
 128  * FreeBSD Device Interface Entry Points
 129  ************************************************************************/
 130 static device_method_t ixv_methods[] = {
 131         /* Device interface */
 132         DEVMETHOD(device_register, ixv_register),
 133         DEVMETHOD(device_probe, iflib_device_probe),
 134         DEVMETHOD(device_attach, iflib_device_attach),
 135         DEVMETHOD(device_detach, iflib_device_detach),
 136         DEVMETHOD(device_shutdown, iflib_device_shutdown),
 137         DEVMETHOD_END
 138 };
 139
 140 static driver_t ixv_driver = {
 141         "ixv", ixv_methods, sizeof(struct adapter),
 142 };
 143
 144 devclass_t ixv_devclass;
 145 DRIVER_MODULE(ixv, pci, ixv_driver, ixv_devclass, 0, 0);
 146 IFLIB_PNP_INFO(pci, ixv_driver, ixv_vendor_info_array);
 147 MODULE_DEPEND(ixv, iflib, 1, 1, 1);
 148 MODULE_DEPEND(ixv, pci, 1, 1, 1);
 149 MODULE_DEPEND(ixv, ether, 1, 1, 1);
 150
 151 static device_method_t ixv_if_methods[] = {
 152         DEVMETHOD(ifdi_attach_pre, ixv_if_attach_pre),
 153         DEVMETHOD(ifdi_attach_post, ixv_if_attach_post),
 154         DEVMETHOD(ifdi_detach, ixv_if_detach),
 155         DEVMETHOD(ifdi_init, ixv_if_init),
 156         DEVMETHOD(ifdi_stop, ixv_if_stop),
 157         DEVMETHOD(ifdi_msix_intr_assign, ixv_if_msix_intr_assign),
 158         DEVMETHOD(ifdi_intr_enable, ixv_if_enable_intr),
 159         DEVMETHOD(ifdi_intr_disable, ixv_if_disable_intr),
 160         DEVMETHOD(ifdi_tx_queue_intr_enable, ixv_if_rx_queue_intr_enable),
 161         DEVMETHOD(ifdi_rx_queue_intr_enable, ixv_if_rx_queue_intr_enable),
 162         DEVMETHOD(ifdi_tx_queues_alloc, ixv_if_tx_queues_alloc),
 163         DEVMETHOD(ifdi_rx_queues_alloc, ixv_if_rx_queues_alloc),
 164         DEVMETHOD(ifdi_queues_free, ixv_if_queues_free),
 165         DEVMETHOD(ifdi_update_admin_status, ixv_if_update_admin_status),
 166         DEVMETHOD(ifdi_multi_set, ixv_if_multi_set),
 167         DEVMETHOD(ifdi_mtu_set, ixv_if_mtu_set),
 168         DEVMETHOD(ifdi_media_status, ixv_if_media_status),
 169         DEVMETHOD(ifdi_media_change, ixv_if_media_change),
 170         DEVMETHOD(ifdi_timer, ixv_if_local_timer),
 171         DEVMETHOD(ifdi_vlan_register, ixv_if_register_vlan),
 172         DEVMETHOD(ifdi_vlan_unregister, ixv_if_unregister_vlan),
 173         DEVMETHOD(ifdi_get_counter, ixv_if_get_counter),
 174         DEVMETHOD_END
 175 };
 176
 177 static driver_t ixv_if_driver = {
 178   "ixv_if", ixv_if_methods, sizeof(struct adapter)
 179 };
 180
 181 /*
 182  * TUNEABLE PARAMETERS:
 183  */
 184
 185 /* Flow control setting, default to full */
 186 static int ixv_flow_control = ixgbe_fc_full;
 187 TUNABLE_INT("hw.ixv.flow_control", &ixv_flow_control);
 188
 189 /*
 190  * Header split: this causes the hardware to DMA
 191  * the header into a separate mbuf from the payload,
 192  * it can be a performance win in some workloads, but
 193  * in others it actually hurts, its off by default.
 194  */
 195 static int ixv_header_split = FALSE;
 196 TUNABLE_INT("hw.ixv.hdr_split", &ixv_header_split);
 197
 198 /*
 199  * Shadow VFTA table, this is needed because
 200  * the real filter table gets cleared during
 201  * a soft reset and we need to repopulate it.
 202  */
 203 static u32 ixv_shadow_vfta[IXGBE_VFTA_SIZE];
 204 extern struct if_txrx ixgbe_txrx;
 205
 206 static struct if_shared_ctx ixv_sctx_init = {
 207         .isc_magic = IFLIB_MAGIC,
 208         .isc_q_align = PAGE_SIZE,/* max(DBA_ALIGN, PAGE_SIZE) */
 209         .isc_tx_maxsize = IXGBE_TSO_SIZE + sizeof(struct ether_vlan_header),
 210         .isc_tx_maxsegsize = PAGE_SIZE,
 211         .isc_tso_maxsize = IXGBE_TSO_SIZE + sizeof(struct ether_vlan_header),
 212         .isc_tso_maxsegsize = PAGE_SIZE,
 213         .isc_rx_maxsize = MJUM16BYTES,
 214         .isc_rx_nsegments = 1,
 215         .isc_rx_maxsegsize = MJUM16BYTES,
 216         .isc_nfl = 1,
 217         .isc_ntxqs = 1,
 218         .isc_nrxqs = 1,
 219         .isc_admin_intrcnt = 1,
 220         .isc_vendor_info = ixv_vendor_info_array,
 221         .isc_driver_version = ixv_driver_version,
 222         .isc_driver = &ixv_if_driver,
 223         .isc_flags = IFLIB_IS_VF | IFLIB_TSO_INIT_IP,
 224
 225         .isc_nrxd_min = {MIN_RXD},
 226         .isc_ntxd_min = {MIN_TXD},
 227         .isc_nrxd_max = {MAX_RXD},
 228         .isc_ntxd_max = {MAX_TXD},
 229         .isc_nrxd_default = {DEFAULT_RXD},
 230         .isc_ntxd_default = {DEFAULT_TXD},
 231 };
 232
 233 if_shared_ctx_t ixv_sctx = &ixv_sctx_init;
 234
 235 static void *
 236 ixv_register(device_t dev)
 237 {
 238         return (ixv_sctx);
 239 }
 240
 241 /************************************************************************
 242  * ixv_if_tx_queues_alloc
 243  ************************************************************************/
 244 static int
 245 ixv_if_tx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs,
 246                        int ntxqs, int ntxqsets)
 247 {
 248         struct adapter     *adapter = iflib_get_softc(ctx);
 249         if_softc_ctx_t     scctx = adapter->shared;
 250         struct ix_tx_queue *que;
 251         int                i, j, error;
 252
 253         MPASS(adapter->num_tx_queues == ntxqsets);
 254         MPASS(ntxqs == 1);
 255
 256         /* Allocate queue structure memory */
 257         adapter->tx_queues =
 258             (struct ix_tx_queue *)malloc(sizeof(struct ix_tx_queue) * ntxqsets,
 259                                          M_DEVBUF, M_NOWAIT | M_ZERO);
 260         if (!adapter->tx_queues) {
 261                 device_printf(iflib_get_dev(ctx),
 262                     "Unable to allocate TX ring memory\n");
 263                 return (ENOMEM);
 264         }
 265
 266         for (i = 0, que = adapter->tx_queues; i < ntxqsets; i++, que++) {
 267                 struct tx_ring *txr = &que->txr;
 268
 269                 txr->me = i;
 270                 txr->adapter =  que->adapter = adapter;
 271                 adapter->active_queues |= (u64)1 << txr->me;
 272
 273                 /* Allocate report status array */
 274                 if (!(txr->tx_rsq = (qidx_t *)malloc(sizeof(qidx_t) * scctx->isc_ntxd[0], M_DEVBUF, M_NOWAIT | M_ZERO))) {
 275                         error = ENOMEM;
 276                         goto fail;
 277                 }
 278                 for (j = 0; j < scctx->isc_ntxd[0]; j++)
 279                         txr->tx_rsq[j] = QIDX_INVALID;
 280                 /* get the virtual and physical address of the hardware queues */
 281                 txr->tail = IXGBE_VFTDT(txr->me);
 282                 txr->tx_base = (union ixgbe_adv_tx_desc *)vaddrs[i*ntxqs];
 283                 txr->tx_paddr = paddrs[i*ntxqs];
 284
 285                 txr->bytes = 0;
 286                 txr->total_packets = 0;
 287
 288         }
 289
 290         device_printf(iflib_get_dev(ctx), "allocated for %d queues\n",
 291             adapter->num_tx_queues);
 292
 293         return (0);
 294
 295  fail:
 296         ixv_if_queues_free(ctx);
 297
 298         return (error);
 299 } /* ixv_if_tx_queues_alloc */
 300
 301 /************************************************************************
 302  * ixv_if_rx_queues_alloc
 303  ************************************************************************/
 304 static int
 305 ixv_if_rx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs,
 306                        int nrxqs, int nrxqsets)
 307 {
 308         struct adapter     *adapter = iflib_get_softc(ctx);
 309         struct ix_rx_queue *que;
 310         int                i, error;
 311
 312         MPASS(adapter->num_rx_queues == nrxqsets);
 313         MPASS(nrxqs == 1);
 314
 315         /* Allocate queue structure memory */
 316         adapter->rx_queues =
 317             (struct ix_rx_queue *)malloc(sizeof(struct ix_rx_queue) * nrxqsets,
 318                                          M_DEVBUF, M_NOWAIT | M_ZERO);
 319         if (!adapter->rx_queues) {
 320                 device_printf(iflib_get_dev(ctx),
 321                     "Unable to allocate TX ring memory\n");
 322                 error = ENOMEM;
 323                 goto fail;
 324         }
 325
 326         for (i = 0, que = adapter->rx_queues; i < nrxqsets; i++, que++) {
 327                 struct rx_ring *rxr = &que->rxr;
 328                 rxr->me = i;
 329                 rxr->adapter = que->adapter = adapter;
 330
 331
 332                 /* get the virtual and physical address of the hw queues */
 333                 rxr->tail = IXGBE_VFRDT(rxr->me);
 334                 rxr->rx_base = (union ixgbe_adv_rx_desc *)vaddrs[i];
 335                 rxr->rx_paddr = paddrs[i*nrxqs];
 336                 rxr->bytes = 0;
 337                 rxr->que = que;
 338         }
 339
 340         device_printf(iflib_get_dev(ctx), "allocated for %d rx queues\n",
 341             adapter->num_rx_queues);
 342
 343         return (0);
 344
 345 fail:
 346         ixv_if_queues_free(ctx);
 347
 348         return (error);
 349 } /* ixv_if_rx_queues_alloc */
 350
 351 /************************************************************************
 352  * ixv_if_queues_free
 353  ************************************************************************/
 354 static void
 355 ixv_if_queues_free(if_ctx_t ctx)
 356 {
 357         struct adapter     *adapter = iflib_get_softc(ctx);
 358         struct ix_tx_queue *que = adapter->tx_queues;
 359         int                i;
 360
 361         if (que == NULL)
 362                 goto free;
 363
 364         for (i = 0; i < adapter->num_tx_queues; i++, que++) {
 365                 struct tx_ring *txr = &que->txr;
 366                 if (txr->tx_rsq == NULL)
 367                         break;
 368
 369                 free(txr->tx_rsq, M_DEVBUF);
 370                 txr->tx_rsq = NULL;
 371         }
 372         if (adapter->tx_queues != NULL)
 373                 free(adapter->tx_queues, M_DEVBUF);
 374 free:
 375         if (adapter->rx_queues != NULL)
 376                 free(adapter->rx_queues, M_DEVBUF);
 377         adapter->tx_queues = NULL;
 378         adapter->rx_queues = NULL;
 379 } /* ixv_if_queues_free */
 380
 381 /************************************************************************
 382  * ixv_if_attach_pre - Device initialization routine
 383  *
 384  *   Called when the driver is being loaded.
 385  *   Identifies the type of hardware, allocates all resources
 386  *   and initializes the hardware.
 387  *
 388  *   return 0 on success, positive on failure
 389  ************************************************************************/
 390 static int
 391 ixv_if_attach_pre(if_ctx_t ctx)
 392 {
 393         struct adapter  *adapter;
 394         device_t        dev;
 395         if_softc_ctx_t  scctx;
 396         struct ixgbe_hw *hw;
 397         int             error = 0;
 398
 399         INIT_DEBUGOUT("ixv_attach: begin");
 400
 401         /* Allocate, clear, and link in our adapter structure */
 402         dev = iflib_get_dev(ctx);
 403         adapter = iflib_get_softc(ctx);
 404         adapter->dev = dev;
 405         adapter->ctx = ctx;
 406         adapter->hw.back = adapter;
 407         scctx = adapter->shared = iflib_get_softc_ctx(ctx);
 408         adapter->media = iflib_get_media(ctx);
 409         hw = &adapter->hw;
 410
 411         /* Do base PCI setup - map BAR0 */
 412         if (ixv_allocate_pci_resources(ctx)) {
 413                 device_printf(dev, "ixv_allocate_pci_resources() failed!\n");
 414                 error = ENXIO;
 415                 goto err_out;
 416         }
 417
 418         /* SYSCTL APIs */
 419         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 420             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "debug",
 421             CTLTYPE_INT | CTLFLAG_RW, adapter, 0, ixv_sysctl_debug, "I",
 422             "Debug Info");
 423
 424         /* Determine hardware revision */
 425         ixv_identify_hardware(ctx);
 426         ixv_init_device_features(adapter);
 427
 428         /* Initialize the shared code */
 429         error = ixgbe_init_ops_vf(hw);
 430         if (error) {
 431                 device_printf(dev, "ixgbe_init_ops_vf() failed!\n");
 432                 error = EIO;
 433                 goto err_out;
 434         }
 435
 436         /* Setup the mailbox */
 437         ixgbe_init_mbx_params_vf(hw);
 438
 439         error = hw->mac.ops.reset_hw(hw);
 440         if (error == IXGBE_ERR_RESET_FAILED)
 441                 device_printf(dev, "...reset_hw() failure: Reset Failed!\n");
 442         else if (error)
 443                 device_printf(dev, "...reset_hw() failed with error %d\n",
 444                     error);
 445         if (error) {
 446                 error = EIO;
 447                 goto err_out;
 448         }
 449
 450         error = hw->mac.ops.init_hw(hw);
 451         if (error) {
 452                 device_printf(dev, "...init_hw() failed with error %d\n",
 453                     error);
 454                 error = EIO;
 455                 goto err_out;
 456         }
 457
 458         /* Negotiate mailbox API version */
 459         error = ixv_negotiate_api(adapter);
 460         if (error) {
 461                 device_printf(dev,
 462                     "Mailbox API negotiation failed during attach!\n");
 463                 goto err_out;
 464         }
 465
 466         /* If no mac address was assigned, make a random one */
 467         if (!ixv_check_ether_addr(hw->mac.addr)) {
 468                 u8 addr[ETHER_ADDR_LEN];
 469                 arc4rand(&addr, sizeof(addr), 0);
 470                 addr[0] &= 0xFE;
 471                 addr[0] |= 0x02;
 472                 bcopy(addr, hw->mac.addr, sizeof(addr));
 473                 bcopy(addr, hw->mac.perm_addr, sizeof(addr));
 474         }
 475
 476         /* Most of the iflib initialization... */
 477
 478         iflib_set_mac(ctx, hw->mac.addr);
 479         switch (adapter->hw.mac.type) {
 480         case ixgbe_mac_X550_vf:
 481         case ixgbe_mac_X550EM_x_vf:
 482         case ixgbe_mac_X550EM_a_vf:
 483                 scctx->isc_ntxqsets_max = scctx->isc_nrxqsets_max = 2;
 484                 break;
 485         default:
 486                 scctx->isc_ntxqsets_max = scctx->isc_nrxqsets_max = 1;
 487         }
 488         scctx->isc_txqsizes[0] =
 489             roundup2(scctx->isc_ntxd[0] * sizeof(union ixgbe_adv_tx_desc) +
 490             sizeof(u32), DBA_ALIGN);
 491         scctx->isc_rxqsizes[0] =
 492             roundup2(scctx->isc_nrxd[0] * sizeof(union ixgbe_adv_rx_desc),
 493             DBA_ALIGN);
 494         /* XXX */
 495         scctx->isc_tx_csum_flags = CSUM_IP | CSUM_TCP | CSUM_UDP | CSUM_TSO |
 496             CSUM_IP6_TCP | CSUM_IP6_UDP | CSUM_IP6_TSO;
 497         scctx->isc_tx_nsegments = IXGBE_82599_SCATTER;
 498         scctx->isc_msix_bar = pci_msix_table_bar(dev);
 499         scctx->isc_tx_tso_segments_max = scctx->isc_tx_nsegments;
 500         scctx->isc_tx_tso_size_max = IXGBE_TSO_SIZE;
 501         scctx->isc_tx_tso_segsize_max = PAGE_SIZE;
 502
 503         scctx->isc_txrx = &ixgbe_txrx;
 504
 505         /*
 506          * Tell the upper layer(s) we support everything the PF
 507          * driver does except...
 508          *   Wake-on-LAN
 509          */
 510         scctx->isc_capabilities = IXGBE_CAPS;
 511         scctx->isc_capabilities ^= IFCAP_WOL;
 512         scctx->isc_capenable = scctx->isc_capabilities;
 513
 514         INIT_DEBUGOUT("ixv_if_attach_pre: end");
 515
 516         return (0);
 517
 518 err_out:
 519         ixv_free_pci_resources(ctx);
 520
 521         return (error);
 522 } /* ixv_if_attach_pre */
 523
 524 static int
 525 ixv_if_attach_post(if_ctx_t ctx)
 526 {
 527         struct adapter *adapter = iflib_get_softc(ctx);
 528         device_t       dev = iflib_get_dev(ctx);
 529         int            error = 0;
 530
 531         /* Setup OS specific network interface */
 532         error = ixv_setup_interface(ctx);
 533         if (error) {
 534                 device_printf(dev, "Interface setup failed: %d\n", error);
 535                 goto end;
 536         }
 537
 538         /* Do the stats setup */
 539         ixv_save_stats(adapter);
 540         ixv_init_stats(adapter);
 541         ixv_add_stats_sysctls(adapter);
 542
 543 end:
 544         return error;
 545 } /* ixv_if_attach_post */
 546
 547 /************************************************************************
 548  * ixv_detach - Device removal routine
 549  *
 550  *   Called when the driver is being removed.
 551  *   Stops the adapter and deallocates all the resources
 552  *   that were allocated for driver operation.
 553  *
 554  *   return 0 on success, positive on failure
 555  ************************************************************************/
 556 static int
 557 ixv_if_detach(if_ctx_t ctx)
 558 {
 559         INIT_DEBUGOUT("ixv_detach: begin");
 560
 561         ixv_free_pci_resources(ctx);
 562
 563         return (0);
 564 } /* ixv_if_detach */
 565
 566 /************************************************************************
 567  * ixv_if_mtu_set
 568  ************************************************************************/
 569 static int
 570 ixv_if_mtu_set(if_ctx_t ctx, uint32_t mtu)
 571 {
 572         struct adapter *adapter = iflib_get_softc(ctx);
 573         struct ifnet   *ifp = iflib_get_ifp(ctx);
 574         int            error = 0;
 575
 576         IOCTL_DEBUGOUT("ioctl: SIOCSIFMTU (Set Interface MTU)");
 577         if (mtu > IXGBE_MAX_FRAME_SIZE - IXGBE_MTU_HDR) {
 578                 error = EINVAL;
 579         } else {
 580                 ifp->if_mtu = mtu;
 581                 adapter->max_frame_size = ifp->if_mtu + IXGBE_MTU_HDR;
 582         }
 583
 584         return error;
 585 } /* ixv_if_mtu_set */
 586
 587 /************************************************************************
 588  * ixv_if_init - Init entry point
 589  *
 590  *   Used in two ways: It is used by the stack as an init entry
 591  *   point in network interface structure. It is also used
 592  *   by the driver as a hw/sw initialization routine to get
 593  *   to a consistent state.
 594  *
 595  *   return 0 on success, positive on failure
 596  ************************************************************************/
 597 static void
 598 ixv_if_init(if_ctx_t ctx)
 599 {
 600         struct adapter  *adapter = iflib_get_softc(ctx);
 601         struct ifnet    *ifp = iflib_get_ifp(ctx);
 602         device_t        dev = iflib_get_dev(ctx);
 603         struct ixgbe_hw *hw = &adapter->hw;
 604         int             error = 0;
 605
 606         INIT_DEBUGOUT("ixv_if_init: begin");
 607         hw->adapter_stopped = FALSE;
 608         hw->mac.ops.stop_adapter(hw);
 609
 610         /* reprogram the RAR[0] in case user changed it. */
 611         hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
 612
 613         /* Get the latest mac address, User can use a LAA */
 614         bcopy(IF_LLADDR(ifp), hw->mac.addr, IXGBE_ETH_LENGTH_OF_ADDRESS);
 615         hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, 1);
 616
 617         /* Reset VF and renegotiate mailbox API version */
 618         hw->mac.ops.reset_hw(hw);
 619         hw->mac.ops.start_hw(hw);
 620         error = ixv_negotiate_api(adapter);
 621         if (error) {
 622                 device_printf(dev,
 623                     "Mailbox API negotiation failed in if_init!\n");
 624                 return;
 625         }
 626
 627         ixv_initialize_transmit_units(ctx);
 628
 629         /* Setup Multicast table */
 630         ixv_if_multi_set(ctx);
 631
 632         adapter->rx_mbuf_sz = iflib_get_rx_mbuf_sz(ctx);
 633
 634         /* Configure RX settings */
 635         ixv_initialize_receive_units(ctx);
 636
 637         /* Set up VLAN offload and filter */
 638         ixv_setup_vlan_support(ctx);
 639
 640         /* Set up MSI-X routing */
 641         ixv_configure_ivars(adapter);
 642
 643         /* Set up auto-mask */
 644         IXGBE_WRITE_REG(hw, IXGBE_VTEIAM, IXGBE_EICS_RTX_QUEUE);
 645
 646         /* Set moderation on the Link interrupt */
 647         IXGBE_WRITE_REG(hw, IXGBE_VTEITR(adapter->vector), IXGBE_LINK_ITR);
 648
 649         /* Stats init */
 650         ixv_init_stats(adapter);
 651
 652         /* Config/Enable Link */
 653         hw->mac.ops.check_link(hw, &adapter->link_speed, &adapter->link_up,
 654             FALSE);
 655
 656         /* And now turn on interrupts */
 657         ixv_if_enable_intr(ctx);
 658
 659         return;
 660 } /* ixv_if_init */
 661
 662 /************************************************************************
 663  * ixv_enable_queue
 664  ************************************************************************/
 665 static inline void
 666 ixv_enable_queue(struct adapter *adapter, u32 vector)
 667 {
 668         struct ixgbe_hw *hw = &adapter->hw;
 669         u32             queue = 1 << vector;
 670         u32             mask;
 671
 672         mask = (IXGBE_EIMS_RTX_QUEUE & queue);
 673         IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
 674 } /* ixv_enable_queue */
 675
 676 /************************************************************************
 677  * ixv_disable_queue
 678  ************************************************************************/
 679 static inline void
 680 ixv_disable_queue(struct adapter *adapter, u32 vector)
 681 {
 682         struct ixgbe_hw *hw = &adapter->hw;
 683         u64             queue = (u64)(1 << vector);
 684         u32             mask;
 685
 686         mask = (IXGBE_EIMS_RTX_QUEUE & queue);
 687         IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, mask);
 688 } /* ixv_disable_queue */
 689
 690
 691 /************************************************************************
 692  * ixv_msix_que - MSI-X Queue Interrupt Service routine
 693  ************************************************************************/
 694 static int
 695 ixv_msix_que(void *arg)
 696 {
 697         struct ix_rx_queue *que = arg;
 698         struct adapter     *adapter = que->adapter;
 699
 700         ixv_disable_queue(adapter, que->msix);
 701         ++que->irqs;
 702
 703         return (FILTER_SCHEDULE_THREAD);
 704 } /* ixv_msix_que */
 705
 706 /************************************************************************
 707  * ixv_msix_mbx
 708  ************************************************************************/
 709 static int
 710 ixv_msix_mbx(void *arg)
 711 {
 712         struct adapter  *adapter = arg;
 713         struct ixgbe_hw *hw = &adapter->hw;
 714         u32             reg;
 715
 716         ++adapter->link_irq;
 717
 718         /* First get the cause */
 719         reg = IXGBE_READ_REG(hw, IXGBE_VTEICS);
 720         /* Clear interrupt with write */
 721         IXGBE_WRITE_REG(hw, IXGBE_VTEICR, reg);
 722
 723         /* Link status change */
 724         if (reg & IXGBE_EICR_LSC)
 725                 iflib_admin_intr_deferred(adapter->ctx);
 726
 727         IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, IXGBE_EIMS_OTHER);
 728
 729         return (FILTER_HANDLED);
 730 } /* ixv_msix_mbx */
 731
 732 /************************************************************************
 733  * ixv_media_status - Media Ioctl callback
 734  *
 735  *   Called whenever the user queries the status of
 736  *   the interface using ifconfig.
 737  ************************************************************************/
 738 static void
 739 ixv_if_media_status(if_ctx_t ctx, struct ifmediareq * ifmr)
 740 {
 741         struct adapter *adapter = iflib_get_softc(ctx);
 742
 743         INIT_DEBUGOUT("ixv_media_status: begin");
 744
 745         iflib_admin_intr_deferred(ctx);
 746
 747         ifmr->ifm_status = IFM_AVALID;
 748         ifmr->ifm_active = IFM_ETHER;
 749
 750         if (!adapter->link_active)
 751                 return;
 752
 753         ifmr->ifm_status |= IFM_ACTIVE;
 754
 755         switch (adapter->link_speed) {
 756                 case IXGBE_LINK_SPEED_1GB_FULL:
 757                         ifmr->ifm_active |= IFM_1000_T | IFM_FDX;
 758                         break;
 759                 case IXGBE_LINK_SPEED_10GB_FULL:
 760                         ifmr->ifm_active |= IFM_10G_T | IFM_FDX;
 761                         break;
 762                 case IXGBE_LINK_SPEED_100_FULL:
 763                         ifmr->ifm_active |= IFM_100_TX | IFM_FDX;
 764                         break;
 765                 case IXGBE_LINK_SPEED_10_FULL:
 766                         ifmr->ifm_active |= IFM_10_T | IFM_FDX;
 767                         break;
 768         }
 769 } /* ixv_if_media_status */
 770
 771 /************************************************************************
 772  * ixv_if_media_change - Media Ioctl callback
 773  *
 774  *   Called when the user changes speed/duplex using
 775  *   media/mediopt option with ifconfig.
 776  ************************************************************************/
 777 static int
 778 ixv_if_media_change(if_ctx_t ctx)
 779 {
 780         struct adapter *adapter = iflib_get_softc(ctx);
 781         struct ifmedia *ifm = iflib_get_media(ctx);
 782
 783         INIT_DEBUGOUT("ixv_media_change: begin");
 784
 785         if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
 786                 return (EINVAL);
 787
 788         switch (IFM_SUBTYPE(ifm->ifm_media)) {
 789         case IFM_AUTO:
 790                 break;
 791         default:
 792                 device_printf(adapter->dev, "Only auto media type\n");
 793                 return (EINVAL);
 794         }
 795
 796         return (0);
 797 } /* ixv_if_media_change */
 798
 799
 800 /************************************************************************
 801  * ixv_negotiate_api
 802  *
 803  *   Negotiate the Mailbox API with the PF;
 804  *   start with the most featured API first.
 805  ************************************************************************/
 806 static int
 807 ixv_negotiate_api(struct adapter *adapter)
 808 {
 809         struct ixgbe_hw *hw = &adapter->hw;
 810         int             mbx_api[] = { ixgbe_mbox_api_11,
 811                                       ixgbe_mbox_api_10,
 812                                       ixgbe_mbox_api_unknown };
 813         int             i = 0;
 814
 815         while (mbx_api[i] != ixgbe_mbox_api_unknown) {
 816                 if (ixgbevf_negotiate_api_version(hw, mbx_api[i]) == 0)
 817                         return (0);
 818                 i++;
 819         }
 820
 821         return (EINVAL);
 822 } /* ixv_negotiate_api */
 823
 824
 825 /************************************************************************
 826  * ixv_if_multi_set - Multicast Update
 827  *
 828  *   Called whenever multicast address list is updated.
 829  ************************************************************************/
 830 static void
 831 ixv_if_multi_set(if_ctx_t ctx)
 832 {
 833         u8       mta[MAX_NUM_MULTICAST_ADDRESSES * IXGBE_ETH_LENGTH_OF_ADDRESS];
 834         struct adapter     *adapter = iflib_get_softc(ctx);
 835         u8                 *update_ptr;
 836         struct ifmultiaddr *ifma;
 837         if_t               ifp = iflib_get_ifp(ctx);
 838         int                mcnt = 0;
 839
 840         IOCTL_DEBUGOUT("ixv_if_multi_set: begin");
 841
 842         CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
 843                 if (ifma->ifma_addr->sa_family != AF_LINK)
 844                         continue;
 845                 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
 846                     &mta[mcnt * IXGBE_ETH_LENGTH_OF_ADDRESS],
 847                     IXGBE_ETH_LENGTH_OF_ADDRESS);
 848                 mcnt++;
 849         }
 850
 851         update_ptr = mta;
 852
 853         adapter->hw.mac.ops.update_mc_addr_list(&adapter->hw, update_ptr, mcnt,
 854             ixv_mc_array_itr, TRUE);
 855 } /* ixv_if_multi_set */
 856
 857 /************************************************************************
 858  * ixv_mc_array_itr
 859  *
 860  *   An iterator function needed by the multicast shared code.
 861  *   It feeds the shared code routine the addresses in the
 862  *   array of ixv_set_multi() one by one.
 863  ************************************************************************/
 864 static u8 *
 865 ixv_mc_array_itr(struct ixgbe_hw *hw, u8 **update_ptr, u32 *vmdq)
 866 {
 867         u8 *addr = *update_ptr;
 868         u8 *newptr;
 869
 870         *vmdq = 0;
 871
 872         newptr = addr + IXGBE_ETH_LENGTH_OF_ADDRESS;
 873         *update_ptr = newptr;
 874
 875         return addr;
 876 } /* ixv_mc_array_itr */
 877
 878 /************************************************************************
 879  * ixv_if_local_timer - Timer routine
 880  *
 881  *   Checks for link status, updates statistics,
 882  *   and runs the watchdog check.
 883  ************************************************************************/
 884 static void
 885 ixv_if_local_timer(if_ctx_t ctx, uint16_t qid)
 886 {
 887         if (qid != 0)
 888                 return;
 889
 890         /* Fire off the adminq task */
 891         iflib_admin_intr_deferred(ctx);
 892 } /* ixv_if_local_timer */
 893
 894 /************************************************************************
 895  * ixv_if_update_admin_status - Update OS on link state
 896  *
 897  * Note: Only updates the OS on the cached link state.
 898  *       The real check of the hardware only happens with
 899  *       a link interrupt.
 900  ************************************************************************/
 901 static void
 902 ixv_if_update_admin_status(if_ctx_t ctx)
 903 {
 904         struct adapter *adapter = iflib_get_softc(ctx);
 905         device_t       dev = iflib_get_dev(ctx);
 906         s32            status;
 907
 908         adapter->hw.mac.get_link_status = TRUE;
 909
 910         status = ixgbe_check_link(&adapter->hw, &adapter->link_speed,
 911             &adapter->link_up, FALSE);
 912
 913         if (status != IXGBE_SUCCESS && adapter->hw.adapter_stopped == FALSE) {
 914                 /* Mailbox's Clear To Send status is lost or timeout occurred.
 915                  * We need reinitialization. */
 916                 iflib_get_ifp(ctx)->if_init(ctx);
 917         }
 918
 919         if (adapter->link_up) {
 920                 if (adapter->link_active == FALSE) {
 921                         if (bootverbose)
 922                                 device_printf(dev, "Link is up %d Gbps %s \n",
 923                                     ((adapter->link_speed == 128) ? 10 : 1),
 924                                     "Full Duplex");
 925                         adapter->link_active = TRUE;
 926                         iflib_link_state_change(ctx, LINK_STATE_UP,
 927                             IF_Gbps(10));
 928                 }
 929         } else { /* Link down */
 930                 if (adapter->link_active == TRUE) {
 931                         if (bootverbose)
 932                                 device_printf(dev, "Link is Down\n");
 933                         iflib_link_state_change(ctx, LINK_STATE_DOWN,  0);
 934                         adapter->link_active = FALSE;
 935                 }
 936         }
 937
 938         /* Stats Update */
 939         ixv_update_stats(adapter);
 940 } /* ixv_if_update_admin_status */
 941
 942
 943 /************************************************************************
 944  * ixv_if_stop - Stop the hardware
 945  *
 946  *   Disables all traffic on the adapter by issuing a
 947  *   global reset on the MAC and deallocates TX/RX buffers.
 948  ************************************************************************/
 949 static void
 950 ixv_if_stop(if_ctx_t ctx)
 951 {
 952         struct adapter  *adapter = iflib_get_softc(ctx);
 953         struct ixgbe_hw *hw = &adapter->hw;
 954
 955         INIT_DEBUGOUT("ixv_stop: begin\n");
 956
 957         ixv_if_disable_intr(ctx);
 958
 959         hw->mac.ops.reset_hw(hw);
 960         adapter->hw.adapter_stopped = FALSE;
 961         hw->mac.ops.stop_adapter(hw);
 962
 963         /* Update the stack */
 964         adapter->link_up = FALSE;
 965         ixv_if_update_admin_status(ctx);
 966
 967         /* reprogram the RAR[0] in case user changed it. */
 968         hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
 969 } /* ixv_if_stop */
 970
 971
 972 /************************************************************************
 973  * ixv_identify_hardware - Determine hardware revision.
 974  ************************************************************************/
 975 static void
 976 ixv_identify_hardware(if_ctx_t ctx)
 977 {
 978         struct adapter  *adapter = iflib_get_softc(ctx);
 979         device_t        dev = iflib_get_dev(ctx);
 980         struct ixgbe_hw *hw = &adapter->hw;
 981
 982         /* Save off the information about this board */
 983         hw->vendor_id = pci_get_vendor(dev);
 984         hw->device_id = pci_get_device(dev);
 985         hw->revision_id = pci_get_revid(dev);
 986         hw->subsystem_vendor_id = pci_get_subvendor(dev);
 987         hw->subsystem_device_id = pci_get_subdevice(dev);
 988
 989         /* A subset of set_mac_type */
 990         switch (hw->device_id) {
 991         case IXGBE_DEV_ID_82599_VF:
 992                 hw->mac.type = ixgbe_mac_82599_vf;
 993                 break;
 994         case IXGBE_DEV_ID_X540_VF:
 995                 hw->mac.type = ixgbe_mac_X540_vf;
 996                 break;
 997         case IXGBE_DEV_ID_X550_VF:
 998                 hw->mac.type = ixgbe_mac_X550_vf;
 999                 break;
1000         case IXGBE_DEV_ID_X550EM_X_VF:
1001                 hw->mac.type = ixgbe_mac_X550EM_x_vf;
1002                 break;
1003         case IXGBE_DEV_ID_X550EM_A_VF:
1004                 hw->mac.type = ixgbe_mac_X550EM_a_vf;
1005                 break;
1006         default:
1007                 device_printf(dev, "unknown mac type\n");
1008                 hw->mac.type = ixgbe_mac_unknown;
1009                 break;
1010         }
1011 } /* ixv_identify_hardware */
1012
1013 /************************************************************************
1014  * ixv_if_msix_intr_assign - Setup MSI-X Interrupt resources and handlers
1015  ************************************************************************/
1016 static int
1017 ixv_if_msix_intr_assign(if_ctx_t ctx, int msix)
1018 {
1019         struct adapter     *adapter = iflib_get_softc(ctx);
1020         device_t           dev = iflib_get_dev(ctx);
1021         struct ix_rx_queue *rx_que = adapter->rx_queues;
1022         struct ix_tx_queue *tx_que;
1023         int                error, rid, vector = 0;
1024         char               buf[16];
1025
1026         for (int i = 0; i < adapter->num_rx_queues; i++, vector++, rx_que++) {
1027                 rid = vector + 1;
1028
1029                 snprintf(buf, sizeof(buf), "rxq%d", i);
1030                 error = iflib_irq_alloc_generic(ctx, &rx_que->que_irq, rid,
1031                     IFLIB_INTR_RX, ixv_msix_que, rx_que, rx_que->rxr.me, buf);
1032
1033                 if (error) {
1034                         device_printf(iflib_get_dev(ctx),
1035                             "Failed to allocate que int %d err: %d", i, error);
1036                         adapter->num_rx_queues = i + 1;
1037                         goto fail;
1038                 }
1039
1040                 rx_que->msix = vector;
1041                 adapter->active_queues |= (u64)(1 << rx_que->msix);
1042
1043         }
1044
1045         for (int i = 0; i < adapter->num_tx_queues; i++) {
1046                 snprintf(buf, sizeof(buf), "txq%d", i);
1047                 tx_que = &adapter->tx_queues[i];
1048                 tx_que->msix = i % adapter->num_rx_queues;
1049                 iflib_softirq_alloc_generic(ctx,
1050                     &adapter->rx_queues[tx_que->msix].que_irq,
1051                     IFLIB_INTR_TX, tx_que, tx_que->txr.me, buf);
1052         }
1053         rid = vector + 1;
1054         error = iflib_irq_alloc_generic(ctx, &adapter->irq, rid,
1055             IFLIB_INTR_ADMIN, ixv_msix_mbx, adapter, 0, "aq");
1056         if (error) {
1057                 device_printf(iflib_get_dev(ctx),
1058                     "Failed to register admin handler");
1059                 return (error);
1060         }
1061
1062         adapter->vector = vector;
1063         /*
1064          * Due to a broken design QEMU will fail to properly
1065          * enable the guest for MSIX unless the vectors in
1066          * the table are all set up, so we must rewrite the
1067          * ENABLE in the MSIX control register again at this
1068          * point to cause it to successfully initialize us.
1069          */
1070         if (adapter->hw.mac.type == ixgbe_mac_82599_vf) {
1071                 int msix_ctrl;
1072                 pci_find_cap(dev, PCIY_MSIX, &rid);
1073                 rid += PCIR_MSIX_CTRL;
1074                 msix_ctrl = pci_read_config(dev, rid, 2);
1075                 msix_ctrl |= PCIM_MSIXCTRL_MSIX_ENABLE;
1076                 pci_write_config(dev, rid, msix_ctrl, 2);
1077         }
1078
1079         return (0);
1080
1081 fail:
1082         iflib_irq_free(ctx, &adapter->irq);
1083         rx_que = adapter->rx_queues;
1084         for (int i = 0; i < adapter->num_rx_queues; i++, rx_que++)
1085                 iflib_irq_free(ctx, &rx_que->que_irq);
1086
1087         return (error);
1088 } /* ixv_if_msix_intr_assign */
1089
1090 /************************************************************************
1091  * ixv_allocate_pci_resources
1092  ************************************************************************/
1093 static int
1094 ixv_allocate_pci_resources(if_ctx_t ctx)
1095 {
1096         struct adapter *adapter = iflib_get_softc(ctx);
1097         device_t       dev = iflib_get_dev(ctx);
1098         int            rid;
1099
1100         rid = PCIR_BAR(0);
1101         adapter->pci_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1102             RF_ACTIVE);
1103
1104         if (!(adapter->pci_mem)) {
1105                 device_printf(dev, "Unable to allocate bus resource: memory\n");
1106                 return (ENXIO);
1107         }
1108
1109         adapter->osdep.mem_bus_space_tag = rman_get_bustag(adapter->pci_mem);
1110         adapter->osdep.mem_bus_space_handle =
1111             rman_get_bushandle(adapter->pci_mem);
1112         adapter->hw.hw_addr = (u8 *)&adapter->osdep.mem_bus_space_handle;
1113
1114         return (0);
1115 } /* ixv_allocate_pci_resources */
1116
1117 /************************************************************************
1118  * ixv_free_pci_resources
1119  ************************************************************************/
1120 static void
1121 ixv_free_pci_resources(if_ctx_t ctx)
1122 {
1123         struct adapter     *adapter = iflib_get_softc(ctx);
1124         struct ix_rx_queue *que = adapter->rx_queues;
1125         device_t           dev = iflib_get_dev(ctx);
1126
1127         /* Release all MSI-X queue resources */
1128         if (adapter->intr_type == IFLIB_INTR_MSIX)
1129                 iflib_irq_free(ctx, &adapter->irq);
1130
1131         if (que != NULL) {
1132                 for (int i = 0; i < adapter->num_rx_queues; i++, que++) {
1133                         iflib_irq_free(ctx, &que->que_irq);
1134                 }
1135         }
1136
1137         if (adapter->pci_mem != NULL)
1138                 bus_release_resource(dev, SYS_RES_MEMORY,
1139                     rman_get_rid(adapter->pci_mem), adapter->pci_mem);
1140 } /* ixv_free_pci_resources */
1141
1142 /************************************************************************
1143  * ixv_setup_interface
1144  *
1145  *   Setup networking device structure and register an interface.
1146  ************************************************************************/
1147 static int
1148 ixv_setup_interface(if_ctx_t ctx)
1149 {
1150         struct adapter *adapter = iflib_get_softc(ctx);
1151         if_softc_ctx_t scctx = adapter->shared;
1152         struct ifnet   *ifp = iflib_get_ifp(ctx);
1153
1154         INIT_DEBUGOUT("ixv_setup_interface: begin");
1155
1156         if_setbaudrate(ifp, IF_Gbps(10));
1157         ifp->if_snd.ifq_maxlen = scctx->isc_ntxd[0] - 2;
1158
1159
1160         adapter->max_frame_size = ifp->if_mtu + IXGBE_MTU_HDR;
1161         ifmedia_add(adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1162         ifmedia_set(adapter->media, IFM_ETHER | IFM_AUTO);
1163
1164         return 0;
1165 } /* ixv_setup_interface */
1166
1167 /************************************************************************
1168  * ixv_if_get_counter
1169  ************************************************************************/
1170 static uint64_t
1171 ixv_if_get_counter(if_ctx_t ctx, ift_counter cnt)
1172 {
1173         struct adapter *adapter = iflib_get_softc(ctx);
1174         if_t           ifp = iflib_get_ifp(ctx);
1175
1176         switch (cnt) {
1177         case IFCOUNTER_IPACKETS:
1178                 return (adapter->ipackets);
1179         case IFCOUNTER_OPACKETS:
1180                 return (adapter->opackets);
1181         case IFCOUNTER_IBYTES:
1182                 return (adapter->ibytes);
1183         case IFCOUNTER_OBYTES:
1184                 return (adapter->obytes);
1185         case IFCOUNTER_IMCASTS:
1186                 return (adapter->imcasts);
1187         default:
1188                 return (if_get_counter_default(ifp, cnt));
1189         }
1190 } /* ixv_if_get_counter */
1191
1192 /************************************************************************
1193  * ixv_initialize_transmit_units - Enable transmit unit.
1194  ************************************************************************/
1195 static void
1196 ixv_initialize_transmit_units(if_ctx_t ctx)
1197 {
1198         struct adapter     *adapter = iflib_get_softc(ctx);
1199         struct ixgbe_hw    *hw = &adapter->hw;
1200         if_softc_ctx_t     scctx = adapter->shared;
1201         struct ix_tx_queue *que = adapter->tx_queues;
1202         int                i;
1203
1204         for (i = 0; i < adapter->num_tx_queues; i++, que++) {
1205                 struct tx_ring *txr = &que->txr;
1206                 u64            tdba = txr->tx_paddr;
1207                 u32            txctrl, txdctl;
1208                 int            j = txr->me;
1209
1210                 /* Set WTHRESH to 8, burst writeback */
1211                 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
1212                 txdctl |= (8 << 16);
1213                 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl);
1214
1215                 /* Set the HW Tx Head and Tail indices */
1216                 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VFTDH(j), 0);
1217                 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VFTDT(j), 0);
1218
1219                 /* Set Tx Tail register */
1220                 txr->tail = IXGBE_VFTDT(j);
1221
1222                 txr->tx_rs_cidx = txr->tx_rs_pidx;
1223                 /* Initialize the last processed descriptor to be the end of
1224                  * the ring, rather than the start, so that we avoid an
1225                  * off-by-one error when calculating how many descriptors are
1226                  * done in the credits_update function.
1227                  */
1228                 txr->tx_cidx_processed = scctx->isc_ntxd[0] - 1;
1229                 for (int k = 0; k < scctx->isc_ntxd[0]; k++)
1230                         txr->tx_rsq[k] = QIDX_INVALID;
1231
1232                 /* Set Ring parameters */
1233                 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(j),
1234                     (tdba & 0x00000000ffffffffULL));
1235                 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(j), (tdba >> 32));
1236                 IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(j),
1237                     scctx->isc_ntxd[0] * sizeof(struct ixgbe_legacy_tx_desc));
1238                 txctrl = IXGBE_READ_REG(hw, IXGBE_VFDCA_TXCTRL(j));
1239                 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
1240                 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(j), txctrl);
1241
1242                 /* Now enable */
1243                 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
1244                 txdctl |= IXGBE_TXDCTL_ENABLE;
1245                 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl);
1246         }
1247
1248         return;
1249 } /* ixv_initialize_transmit_units */
1250
1251 /************************************************************************
1252  * ixv_initialize_rss_mapping
1253  ************************************************************************/
1254 static void
1255 ixv_initialize_rss_mapping(struct adapter *adapter)
1256 {
1257         struct ixgbe_hw *hw = &adapter->hw;
1258         u32             reta = 0, mrqc, rss_key[10];
1259         int             queue_id;
1260         int             i, j;
1261         u32             rss_hash_config;
1262
1263         if (adapter->feat_en & IXGBE_FEATURE_RSS) {
1264                 /* Fetch the configured RSS key */
1265                 rss_getkey((uint8_t *)&rss_key);
1266         } else {
1267                 /* set up random bits */
1268                 arc4rand(&rss_key, sizeof(rss_key), 0);
1269         }
1270
1271         /* Now fill out hash function seeds */
1272         for (i = 0; i < 10; i++)
1273                 IXGBE_WRITE_REG(hw, IXGBE_VFRSSRK(i), rss_key[i]);
1274
1275         /* Set up the redirection table */
1276         for (i = 0, j = 0; i < 64; i++, j++) {
1277                 if (j == adapter->num_rx_queues)
1278                         j = 0;
1279
1280                 if (adapter->feat_en & IXGBE_FEATURE_RSS) {
1281                         /*
1282                          * Fetch the RSS bucket id for the given indirection
1283                          * entry. Cap it at the number of configured buckets
1284                          * (which is num_rx_queues.)
1285                          */
1286                         queue_id = rss_get_indirection_to_bucket(i);
1287                         queue_id = queue_id % adapter->num_rx_queues;
1288                 } else
1289                         queue_id = j;
1290
1291                 /*
1292                  * The low 8 bits are for hash value (n+0);
1293                  * The next 8 bits are for hash value (n+1), etc.
1294                  */
1295                 reta >>= 8;
1296                 reta |= ((uint32_t)queue_id) << 24;
1297                 if ((i & 3) == 3) {
1298                         IXGBE_WRITE_REG(hw, IXGBE_VFRETA(i >> 2), reta);
1299                         reta = 0;
1300                 }
1301         }
1302
1303         /* Perform hash on these packet types */
1304         if (adapter->feat_en & IXGBE_FEATURE_RSS)
1305                 rss_hash_config = rss_gethashconfig();
1306         else {
1307                 /*
1308                  * Disable UDP - IP fragments aren't currently being handled
1309                  * and so we end up with a mix of 2-tuple and 4-tuple
1310                  * traffic.
1311                  */
1312                 rss_hash_config = RSS_HASHTYPE_RSS_IPV4
1313                                 | RSS_HASHTYPE_RSS_TCP_IPV4
1314                                 | RSS_HASHTYPE_RSS_IPV6
1315                                 | RSS_HASHTYPE_RSS_TCP_IPV6;
1316         }
1317
1318         mrqc = IXGBE_MRQC_RSSEN;
1319         if (rss_hash_config & RSS_HASHTYPE_RSS_IPV4)
1320                 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4;
1321         if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV4)
1322                 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_TCP;
1323         if (rss_hash_config & RSS_HASHTYPE_RSS_IPV6)
1324                 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6;
1325         if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV6)
1326                 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
1327         if (rss_hash_config & RSS_HASHTYPE_RSS_IPV6_EX)
1328                 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_IPV6_EX defined, but not supported\n",
1329                     __func__);
1330         if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV6_EX)
1331                 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_TCP_IPV6_EX defined, but not supported\n",
1332                     __func__);
1333         if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV4)
1334                 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP;
1335         if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV6)
1336                 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
1337         if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV6_EX)
1338                 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_UDP_IPV6_EX defined, but not supported\n",
1339                     __func__);
1340         IXGBE_WRITE_REG(hw, IXGBE_VFMRQC, mrqc);
1341 } /* ixv_initialize_rss_mapping */
1342
1343
1344 /************************************************************************
1345  * ixv_initialize_receive_units - Setup receive registers and features.
1346  ************************************************************************/
1347 static void
1348 ixv_initialize_receive_units(if_ctx_t ctx)
1349 {
1350         struct adapter     *adapter = iflib_get_softc(ctx);
1351         if_softc_ctx_t     scctx;
1352         struct ixgbe_hw    *hw = &adapter->hw;
1353         struct ifnet       *ifp = iflib_get_ifp(ctx);
1354         struct ix_rx_queue *que = adapter->rx_queues;
1355         u32                bufsz, psrtype;
1356
1357         if (ifp->if_mtu > ETHERMTU)
1358                 bufsz = 4096 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1359         else
1360                 bufsz = 2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1361
1362         psrtype = IXGBE_PSRTYPE_TCPHDR
1363                 | IXGBE_PSRTYPE_UDPHDR
1364                 | IXGBE_PSRTYPE_IPV4HDR
1365                 | IXGBE_PSRTYPE_IPV6HDR
1366                 | IXGBE_PSRTYPE_L2HDR;
1367
1368         if (adapter->num_rx_queues > 1)
1369                 psrtype |= 1 << 29;
1370
1371         IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype);
1372
1373         /* Tell PF our max_frame size */
1374         if (ixgbevf_rlpml_set_vf(hw, adapter->max_frame_size) != 0) {
1375                 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");
1376         }
1377         scctx = adapter->shared;
1378
1379         for (int i = 0; i < adapter->num_rx_queues; i++, que++) {
1380                 struct rx_ring *rxr = &que->rxr;
1381                 u64            rdba = rxr->rx_paddr;
1382                 u32            reg, rxdctl;
1383                 int            j = rxr->me;
1384
1385                 /* Disable the queue */
1386                 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j));
1387                 rxdctl &= ~IXGBE_RXDCTL_ENABLE;
1388                 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), rxdctl);
1389                 for (int k = 0; k < 10; k++) {
1390                         if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)) &
1391                             IXGBE_RXDCTL_ENABLE)
1392                                 msec_delay(1);
1393                         else
1394                                 break;
1395                 }
1396                 wmb();
1397                 /* Setup the Base and Length of the Rx Descriptor Ring */
1398                 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(j),
1399                     (rdba & 0x00000000ffffffffULL));
1400                 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(j), (rdba >> 32));
1401                 IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(j),
1402                     scctx->isc_nrxd[0] * sizeof(union ixgbe_adv_rx_desc));
1403
1404                 /* Reset the ring indices */
1405                 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(rxr->me), 0);
1406                 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), 0);
1407
1408                 /* Set up the SRRCTL register */
1409                 reg = IXGBE_READ_REG(hw, IXGBE_VFSRRCTL(j));
1410                 reg &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
1411                 reg &= ~IXGBE_SRRCTL_BSIZEPKT_MASK;
1412                 reg |= bufsz;
1413                 reg |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
1414                 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(j), reg);
1415
1416                 /* Capture Rx Tail index */
1417                 rxr->tail = IXGBE_VFRDT(rxr->me);
1418
1419                 /* Do the queue enabling last */
1420                 rxdctl |= IXGBE_RXDCTL_ENABLE | IXGBE_RXDCTL_VME;
1421                 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), rxdctl);
1422                 for (int l = 0; l < 10; l++) {
1423                         if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)) &
1424                             IXGBE_RXDCTL_ENABLE)
1425                                 break;
1426                         msec_delay(1);
1427                 }
1428                 wmb();
1429
1430                 /* Set the Tail Pointer */
1431 #ifdef DEV_NETMAP
1432                 /*
1433                  * In netmap mode, we must preserve the buffers made
1434                  * available to userspace before the if_init()
1435                  * (this is true by default on the TX side, because
1436                  * init makes all buffers available to userspace).
1437                  *
1438                  * netmap_reset() and the device specific routines
1439                  * (e.g. ixgbe_setup_receive_rings()) map these
1440                  * buffers at the end of the NIC ring, so here we
1441                  * must set the RDT (tail) register to make sure
1442                  * they are not overwritten.
1443                  *
1444                  * In this driver the NIC ring starts at RDH = 0,
1445                  * RDT points to the last slot available for reception (?),
1446                  * so RDT = num_rx_desc - 1 means the whole ring is available.
1447                  */
1448                 if (ifp->if_capenable & IFCAP_NETMAP) {
1449                         struct netmap_adapter *na = NA(ifp);
1450                         struct netmap_kring *kring = na->rx_rings[j];
1451                         int t = na->num_rx_desc - 1 - nm_kr_rxspace(kring);
1452
1453                         IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), t);
1454                 } else
1455 #endif /* DEV_NETMAP */
1456                         IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me),
1457                             scctx->isc_nrxd[0] - 1);
1458         }
1459
1460         ixv_initialize_rss_mapping(adapter);
1461 } /* ixv_initialize_receive_units */
1462
1463 /************************************************************************
1464  * ixv_setup_vlan_support
1465  ************************************************************************/
1466 static void
1467 ixv_setup_vlan_support(if_ctx_t ctx)
1468 {
1469         struct ifnet    *ifp = iflib_get_ifp(ctx);
1470         struct adapter  *adapter = iflib_get_softc(ctx);
1471         struct ixgbe_hw *hw = &adapter->hw;
1472         u32             ctrl, vid, vfta, retry;
1473
1474         /*
1475          * We get here thru if_init, meaning
1476          * a soft reset, this has already cleared
1477          * the VFTA and other state, so if there
1478          * have been no vlan's registered do nothing.
1479          */
1480         if (adapter->num_vlans == 0)
1481                 return;
1482
1483         if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) {
1484                 /* Enable the queues */
1485                 for (int i = 0; i < adapter->num_rx_queues; i++) {
1486                         ctrl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
1487                         ctrl |= IXGBE_RXDCTL_VME;
1488                         IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), ctrl);
1489                         /*
1490                          * Let Rx path know that it needs to store VLAN tag
1491                          * as part of extra mbuf info.
1492                          */
1493                         adapter->rx_queues[i].rxr.vtag_strip = TRUE;
1494                 }
1495         }
1496
1497         /*
1498          * If filtering VLAN tags is disabled,
1499          * there is no need to fill VLAN Filter Table Array (VFTA).
1500          */
1501         if ((ifp->if_capenable & IFCAP_VLAN_HWFILTER) == 0)
1502                 return;
1503
1504         /*
1505          * A soft reset zero's out the VFTA, so
1506          * we need to repopulate it now.
1507          */
1508         for (int i = 0; i < IXGBE_VFTA_SIZE; i++) {
1509                 if (ixv_shadow_vfta[i] == 0)
1510                         continue;
1511                 vfta = ixv_shadow_vfta[i];
1512                 /*
1513                  * Reconstruct the vlan id's
1514                  * based on the bits set in each
1515                  * of the array ints.
1516                  */
1517                 for (int j = 0; j < 32; j++) {
1518                         retry = 0;
1519                         if ((vfta & (1 << j)) == 0)
1520                                 continue;
1521                         vid = (i * 32) + j;
1522                         /* Call the shared code mailbox routine */
1523                         while (hw->mac.ops.set_vfta(hw, vid, 0, TRUE, FALSE)) {
1524                                 if (++retry > 5)
1525                                         break;
1526                         }
1527                 }
1528         }
1529 } /* ixv_setup_vlan_support */
1530
1531 /************************************************************************
1532  * ixv_if_register_vlan
1533  *
1534  *   Run via a vlan config EVENT, it enables us to use the
1535  *   HW Filter table since we can get the vlan id. This just
1536  *   creates the entry in the soft version of the VFTA, init
1537  *   will repopulate the real table.
1538  ************************************************************************/
1539 static void
1540 ixv_if_register_vlan(if_ctx_t ctx, u16 vtag)
1541 {
1542         struct adapter *adapter = iflib_get_softc(ctx);
1543         u16            index, bit;
1544
1545         index = (vtag >> 5) & 0x7F;
1546         bit = vtag & 0x1F;
1547         ixv_shadow_vfta[index] |= (1 << bit);
1548         ++adapter->num_vlans;
1549 } /* ixv_if_register_vlan */
1550
1551 /************************************************************************
1552  * ixv_if_unregister_vlan
1553  *
1554  *   Run via a vlan unconfig EVENT, remove our entry
1555  *   in the soft vfta.
1556  ************************************************************************/
1557 static void
1558 ixv_if_unregister_vlan(if_ctx_t ctx, u16 vtag)
1559 {
1560         struct adapter *adapter = iflib_get_softc(ctx);
1561         u16            index, bit;
1562
1563         index = (vtag >> 5) & 0x7F;
1564         bit = vtag & 0x1F;
1565         ixv_shadow_vfta[index] &= ~(1 << bit);
1566         --adapter->num_vlans;
1567 } /* ixv_if_unregister_vlan */
1568
1569 /************************************************************************
1570  * ixv_if_enable_intr
1571  ************************************************************************/
1572 static void
1573 ixv_if_enable_intr(if_ctx_t ctx)
1574 {
1575         struct adapter  *adapter = iflib_get_softc(ctx);
1576         struct ixgbe_hw *hw = &adapter->hw;
1577         struct ix_rx_queue *que = adapter->rx_queues;
1578         u32             mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
1579
1580         IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
1581
1582         mask = IXGBE_EIMS_ENABLE_MASK;
1583         mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
1584         IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, mask);
1585
1586         for (int i = 0; i < adapter->num_rx_queues; i++, que++)
1587                 ixv_enable_queue(adapter, que->msix);
1588
1589         IXGBE_WRITE_FLUSH(hw);
1590 } /* ixv_if_enable_intr */
1591
1592 /************************************************************************
1593  * ixv_if_disable_intr
1594  ************************************************************************/
1595 static void
1596 ixv_if_disable_intr(if_ctx_t ctx)
1597 {
1598         struct adapter *adapter = iflib_get_softc(ctx);
1599         IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEIAC, 0);
1600         IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEIMC, ~0);
1601         IXGBE_WRITE_FLUSH(&adapter->hw);
1602 } /* ixv_if_disable_intr */
1603
1604 /************************************************************************
1605  * ixv_if_rx_queue_intr_enable
1606  ************************************************************************/
1607 static int
1608 ixv_if_rx_queue_intr_enable(if_ctx_t ctx, uint16_t rxqid)
1609 {
1610         struct adapter  *adapter = iflib_get_softc(ctx);
1611         struct ix_rx_queue *que = &adapter->rx_queues[rxqid];
1612
1613         ixv_enable_queue(adapter, que->rxr.me);
1614
1615         return (0);
1616 } /* ixv_if_rx_queue_intr_enable */
1617
1618 /************************************************************************
1619  * ixv_set_ivar
1620  *
1621  *   Setup the correct IVAR register for a particular MSI-X interrupt
1622  *    - entry is the register array entry
1623  *    - vector is the MSI-X vector for this queue
1624  *    - type is RX/TX/MISC
1625  ************************************************************************/
1626 static void
1627 ixv_set_ivar(struct adapter *adapter, u8 entry, u8 vector, s8 type)
1628 {
1629         struct ixgbe_hw *hw = &adapter->hw;
1630         u32             ivar, index;
1631
1632         vector |= IXGBE_IVAR_ALLOC_VAL;
1633
1634         if (type == -1) { /* MISC IVAR */
1635                 ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);
1636                 ivar &= ~0xFF;
1637                 ivar |= vector;
1638                 IXGBE_WRITE_REG(hw, IXGBE_VTIVAR_MISC, ivar);
1639         } else {          /* RX/TX IVARS */
1640                 index = (16 * (entry & 1)) + (8 * type);
1641                 ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR(entry >> 1));
1642                 ivar &= ~(0xFF << index);
1643                 ivar |= (vector << index);
1644                 IXGBE_WRITE_REG(hw, IXGBE_VTIVAR(entry >> 1), ivar);
1645         }
1646 } /* ixv_set_ivar */
1647
1648 /************************************************************************
1649  * ixv_configure_ivars
1650  ************************************************************************/
1651 static void
1652 ixv_configure_ivars(struct adapter *adapter)
1653 {
1654         struct ix_rx_queue *que = adapter->rx_queues;
1655
1656         MPASS(adapter->num_rx_queues == adapter->num_tx_queues);
1657
1658         for (int i = 0; i < adapter->num_rx_queues; i++, que++) {
1659                 /* First the RX queue entry */
1660                 ixv_set_ivar(adapter, i, que->msix, 0);
1661                 /* ... and the TX */
1662                 ixv_set_ivar(adapter, i, que->msix, 1);
1663                 /* Set an initial value in EITR */
1664                 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEITR(que->msix),
1665                     IXGBE_EITR_DEFAULT);
1666         }
1667
1668         /* For the mailbox interrupt */
1669         ixv_set_ivar(adapter, 1, adapter->vector, -1);
1670 } /* ixv_configure_ivars */
1671
1672 /************************************************************************
1673  * ixv_save_stats
1674  *
1675  *   The VF stats registers never have a truly virgin
1676  *   starting point, so this routine tries to make an
1677  *   artificial one, marking ground zero on attach as
1678  *   it were.
1679  ************************************************************************/
1680 static void
1681 ixv_save_stats(struct adapter *adapter)
1682 {
1683         if (adapter->stats.vf.vfgprc || adapter->stats.vf.vfgptc) {
1684                 adapter->stats.vf.saved_reset_vfgprc +=
1685                     adapter->stats.vf.vfgprc - adapter->stats.vf.base_vfgprc;
1686                 adapter->stats.vf.saved_reset_vfgptc +=
1687                     adapter->stats.vf.vfgptc - adapter->stats.vf.base_vfgptc;
1688                 adapter->stats.vf.saved_reset_vfgorc +=
1689                     adapter->stats.vf.vfgorc - adapter->stats.vf.base_vfgorc;
1690                 adapter->stats.vf.saved_reset_vfgotc +=
1691                     adapter->stats.vf.vfgotc - adapter->stats.vf.base_vfgotc;
1692                 adapter->stats.vf.saved_reset_vfmprc +=
1693                     adapter->stats.vf.vfmprc - adapter->stats.vf.base_vfmprc;
1694         }
1695 } /* ixv_save_stats */
1696
1697 /************************************************************************
1698  * ixv_init_stats
1699  ************************************************************************/
1700 static void
1701 ixv_init_stats(struct adapter *adapter)
1702 {
1703         struct ixgbe_hw *hw = &adapter->hw;
1704
1705         adapter->stats.vf.last_vfgprc = IXGBE_READ_REG(hw, IXGBE_VFGPRC);
1706         adapter->stats.vf.last_vfgorc = IXGBE_READ_REG(hw, IXGBE_VFGORC_LSB);
1707         adapter->stats.vf.last_vfgorc |=
1708             (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGORC_MSB))) << 32);
1709
1710         adapter->stats.vf.last_vfgptc = IXGBE_READ_REG(hw, IXGBE_VFGPTC);
1711         adapter->stats.vf.last_vfgotc = IXGBE_READ_REG(hw, IXGBE_VFGOTC_LSB);
1712         adapter->stats.vf.last_vfgotc |=
1713             (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGOTC_MSB))) << 32);
1714
1715         adapter->stats.vf.last_vfmprc = IXGBE_READ_REG(hw, IXGBE_VFMPRC);
1716
1717         adapter->stats.vf.base_vfgprc = adapter->stats.vf.last_vfgprc;
1718         adapter->stats.vf.base_vfgorc = adapter->stats.vf.last_vfgorc;
1719         adapter->stats.vf.base_vfgptc = adapter->stats.vf.last_vfgptc;
1720         adapter->stats.vf.base_vfgotc = adapter->stats.vf.last_vfgotc;
1721         adapter->stats.vf.base_vfmprc = adapter->stats.vf.last_vfmprc;
1722 } /* ixv_init_stats */
1723
1724 #define UPDATE_STAT_32(reg, last, count)                \
1725 {                                                       \
1726         u32 current = IXGBE_READ_REG(hw, reg);          \
1727         if (current < last)                             \
1728                 count += 0x100000000LL;                 \
1729         last = current;                                 \
1730         count &= 0xFFFFFFFF00000000LL;                  \
1731         count |= current;                               \
1732 }
1733
1734 #define UPDATE_STAT_36(lsb, msb, last, count)           \
1735 {                                                       \
1736         u64 cur_lsb = IXGBE_READ_REG(hw, lsb);          \
1737         u64 cur_msb = IXGBE_READ_REG(hw, msb);          \
1738         u64 current = ((cur_msb << 32) | cur_lsb);      \
1739         if (current < last)                             \
1740                 count += 0x1000000000LL;                \
1741         last = current;                                 \
1742         count &= 0xFFFFFFF000000000LL;                  \
1743         count |= current;                               \
1744 }
1745
1746 /************************************************************************
1747  * ixv_update_stats - Update the board statistics counters.
1748  ************************************************************************/
1749 void
1750 ixv_update_stats(struct adapter *adapter)
1751 {
1752         struct ixgbe_hw *hw = &adapter->hw;
1753         struct ixgbevf_hw_stats *stats = &adapter->stats.vf;
1754
1755         UPDATE_STAT_32(IXGBE_VFGPRC, adapter->stats.vf.last_vfgprc,
1756             adapter->stats.vf.vfgprc);
1757         UPDATE_STAT_32(IXGBE_VFGPTC, adapter->stats.vf.last_vfgptc,
1758             adapter->stats.vf.vfgptc);
1759         UPDATE_STAT_36(IXGBE_VFGORC_LSB, IXGBE_VFGORC_MSB,
1760             adapter->stats.vf.last_vfgorc, adapter->stats.vf.vfgorc);
1761         UPDATE_STAT_36(IXGBE_VFGOTC_LSB, IXGBE_VFGOTC_MSB,
1762             adapter->stats.vf.last_vfgotc, adapter->stats.vf.vfgotc);
1763         UPDATE_STAT_32(IXGBE_VFMPRC, adapter->stats.vf.last_vfmprc,
1764             adapter->stats.vf.vfmprc);
1765
1766         /* Fill out the OS statistics structure */
1767         IXGBE_SET_IPACKETS(adapter, stats->vfgprc);
1768         IXGBE_SET_OPACKETS(adapter, stats->vfgptc);
1769         IXGBE_SET_IBYTES(adapter, stats->vfgorc);
1770         IXGBE_SET_OBYTES(adapter, stats->vfgotc);
1771         IXGBE_SET_IMCASTS(adapter, stats->vfmprc);
1772 } /* ixv_update_stats */
1773
1774 /************************************************************************
1775  * ixv_add_stats_sysctls - Add statistic sysctls for the VF.
1776  ************************************************************************/
1777 static void
1778 ixv_add_stats_sysctls(struct adapter *adapter)
1779 {
1780         device_t                dev = adapter->dev;
1781         struct ix_tx_queue      *tx_que = adapter->tx_queues;
1782         struct ix_rx_queue      *rx_que = adapter->rx_queues;
1783         struct sysctl_ctx_list  *ctx = device_get_sysctl_ctx(dev);
1784         struct sysctl_oid       *tree = device_get_sysctl_tree(dev);
1785         struct sysctl_oid_list  *child = SYSCTL_CHILDREN(tree);
1786         struct ixgbevf_hw_stats *stats = &adapter->stats.vf;
1787         struct sysctl_oid       *stat_node, *queue_node;
1788         struct sysctl_oid_list  *stat_list, *queue_list;
1789
1790 #define QUEUE_NAME_LEN 32
1791         char                    namebuf[QUEUE_NAME_LEN];
1792
1793         /* Driver Statistics */
1794         SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "watchdog_events",
1795             CTLFLAG_RD, &adapter->watchdog_events, "Watchdog timeouts");
1796         SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "link_irq",
1797             CTLFLAG_RD, &adapter->link_irq, "Link MSI-X IRQ Handled");
1798
1799         for (int i = 0; i < adapter->num_tx_queues; i++, tx_que++) {
1800                 struct tx_ring *txr = &tx_que->txr;
1801                 snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i);
1802                 queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, namebuf,
1803                     CTLFLAG_RD, NULL, "Queue Name");
1804                 queue_list = SYSCTL_CHILDREN(queue_node);
1805
1806                 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "tso_tx",
1807                     CTLFLAG_RD, &(txr->tso_tx), "TSO Packets");
1808                 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "tx_packets",
1809                     CTLFLAG_RD, &(txr->total_packets), "TX Packets");
1810         }
1811
1812         for (int i = 0; i < adapter->num_rx_queues; i++, rx_que++) {
1813                 struct rx_ring *rxr = &rx_que->rxr;
1814                 snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i);
1815                 queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, namebuf,
1816                     CTLFLAG_RD, NULL, "Queue Name");
1817                 queue_list = SYSCTL_CHILDREN(queue_node);
1818
1819                 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "irqs",
1820                     CTLFLAG_RD, &(rx_que->irqs), "IRQs on queue");
1821                 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "rx_packets",
1822                     CTLFLAG_RD, &(rxr->rx_packets), "RX packets");
1823                 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "rx_bytes",
1824                     CTLFLAG_RD, &(rxr->rx_bytes), "RX bytes");
1825                 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "rx_discarded",
1826                     CTLFLAG_RD, &(rxr->rx_discarded), "Discarded RX packets");
1827         }
1828
1829         stat_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "mac",
1830             CTLFLAG_RD, NULL, "VF Statistics (read from HW registers)");
1831         stat_list = SYSCTL_CHILDREN(stat_node);
1832
1833         SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_rcvd",
1834             CTLFLAG_RD, &stats->vfgprc, "Good Packets Received");
1835         SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_rcvd",
1836             CTLFLAG_RD, &stats->vfgorc, "Good Octets Received");
1837         SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_rcvd",
1838             CTLFLAG_RD, &stats->vfmprc, "Multicast Packets Received");
1839         SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_txd",
1840             CTLFLAG_RD, &stats->vfgptc, "Good Packets Transmitted");
1841         SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_txd",
1842             CTLFLAG_RD, &stats->vfgotc, "Good Octets Transmitted");
1843 } /* ixv_add_stats_sysctls */
1844
1845 /************************************************************************
1846  * ixv_print_debug_info
1847  *
1848  *   Called only when em_display_debug_stats is enabled.
1849  *   Provides a way to take a look at important statistics
1850  *   maintained by the driver and hardware.
1851  ************************************************************************/
1852 static void
1853 ixv_print_debug_info(struct adapter *adapter)
1854 {
1855         device_t        dev = adapter->dev;
1856         struct ixgbe_hw *hw = &adapter->hw;
1857
1858         device_printf(dev, "Error Byte Count = %u \n",
1859             IXGBE_READ_REG(hw, IXGBE_ERRBC));
1860
1861         device_printf(dev, "MBX IRQ Handled: %lu\n", (long)adapter->link_irq);
1862 } /* ixv_print_debug_info */
1863
1864 /************************************************************************
1865  * ixv_sysctl_debug
1866  ************************************************************************/
1867 static int
1868 ixv_sysctl_debug(SYSCTL_HANDLER_ARGS)
1869 {
1870         struct adapter *adapter;
1871         int            error, result;
1872
1873         result = -1;
1874         error = sysctl_handle_int(oidp, &result, 0, req);
1875
1876         if (error || !req->newptr)
1877                 return (error);
1878
1879         if (result == 1) {
1880                 adapter = (struct adapter *)arg1;
1881                 ixv_print_debug_info(adapter);
1882         }
1883
1884         return error;
1885 } /* ixv_sysctl_debug */
1886
1887 /************************************************************************
1888  * ixv_init_device_features
1889  ************************************************************************/
1890 static void
1891 ixv_init_device_features(struct adapter *adapter)
1892 {
1893         adapter->feat_cap = IXGBE_FEATURE_NETMAP
1894                           | IXGBE_FEATURE_VF
1895                           | IXGBE_FEATURE_RSS
1896                           | IXGBE_FEATURE_LEGACY_TX;
1897
1898         /* A tad short on feature flags for VFs, atm. */
1899         switch (adapter->hw.mac.type) {
1900         case ixgbe_mac_82599_vf:
1901                 break;
1902         case ixgbe_mac_X540_vf:
1903                 break;
1904         case ixgbe_mac_X550_vf:
1905         case ixgbe_mac_X550EM_x_vf:
1906         case ixgbe_mac_X550EM_a_vf:
1907                 adapter->feat_cap |= IXGBE_FEATURE_NEEDS_CTXD;
1908                 break;
1909         default:
1910                 break;
1911         }
1912
1913         /* Enabled by default... */
1914         /* Is a virtual function (VF) */
1915         if (adapter->feat_cap & IXGBE_FEATURE_VF)
1916                 adapter->feat_en |= IXGBE_FEATURE_VF;
1917         /* Netmap */
1918         if (adapter->feat_cap & IXGBE_FEATURE_NETMAP)
1919                 adapter->feat_en |= IXGBE_FEATURE_NETMAP;
1920         /* Receive-Side Scaling (RSS) */
1921         if (adapter->feat_cap & IXGBE_FEATURE_RSS)
1922                 adapter->feat_en |= IXGBE_FEATURE_RSS;
1923         /* Needs advanced context descriptor regardless of offloads req'd */
1924         if (adapter->feat_cap & IXGBE_FEATURE_NEEDS_CTXD)
1925                 adapter->feat_en |= IXGBE_FEATURE_NEEDS_CTXD;
1926 } /* ixv_init_device_features */
1927