drivers/net/ethernet/neterion/vxge/vxge-main.c

   1 /******************************************************************************
   2 * This software may be used and distributed according to the terms of
   3 * the GNU General Public License (GPL), incorporated herein by reference.
   4 * Drivers based on or derived from this code fall under the GPL and must
   5 * retain the authorship, copyright and license notice.  This file is not
   6 * a complete program and may only be used when the entire operating
   7 * system is licensed under the GPL.
   8 * See the file COPYING in this distribution for more information.
   9 *
  10 * vxge-main.c: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2010 Exar Corp.
  13 *
  14 * The module loadable parameters that are supported by the driver and a brief
  15 * explanation of all the variables:
  16 * vlan_tag_strip:
  17 *       Strip VLAN Tag enable/disable. Instructs the device to remove
  18 *       the VLAN tag from all received tagged frames that are not
  19 *       replicated at the internal L2 switch.
  20 *               0 - Do not strip the VLAN tag.
  21 *               1 - Strip the VLAN tag.
  22 *
  23 * addr_learn_en:
  24 *       Enable learning the mac address of the guest OS interface in
  25 *       a virtualization environment.
  26 *               0 - DISABLE
  27 *               1 - ENABLE
  28 *
  29 * max_config_port:
  30 *       Maximum number of port to be supported.
  31 *               MIN -1 and MAX - 2
  32 *
  33 * max_config_vpath:
  34 *       This configures the maximum no of VPATH configures for each
  35 *       device function.
  36 *               MIN - 1 and MAX - 17
  37 *
  38 * max_config_dev:
  39 *       This configures maximum no of Device function to be enabled.
  40 *               MIN - 1 and MAX - 17
  41 *
  42 ******************************************************************************/
  43
  44 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  45
  46 #include <linux/bitops.h>
  47 #include <linux/if_vlan.h>
  48 #include <linux/interrupt.h>
  49 #include <linux/pci.h>
  50 #include <linux/slab.h>
  51 #include <linux/tcp.h>
  52 #include <net/ip.h>
  53 #include <linux/netdevice.h>
  54 #include <linux/etherdevice.h>
  55 #include <linux/firmware.h>
  56 #include <linux/net_tstamp.h>
  57 #include <linux/prefetch.h>
  58 #include <linux/module.h>
  59 #include "vxge-main.h"
  60 #include "vxge-reg.h"
  61
  62 MODULE_LICENSE("Dual BSD/GPL");
  63 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  64         "Virtualized Server Adapter");
  65
  66 static const struct pci_device_id vxge_id_table[] = {
  67         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  68         PCI_ANY_ID},
  69         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  70         PCI_ANY_ID},
  71         {0}
  72 };
  73
  74 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  75
  76 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  77 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  78 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  79 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  80 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  81 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  82
  83 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  84                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  85 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  86         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  87 module_param_array(bw_percentage, uint, NULL, 0);
  88
  89 static struct vxge_drv_config *driver_config;
  90 static void vxge_reset_all_vpaths(struct vxgedev *vdev);
  91
  92 static inline int is_vxge_card_up(struct vxgedev *vdev)
  93 {
  94         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  95 }
  96
  97 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  98 {
  99         struct sk_buff **skb_ptr = NULL;
 100         struct sk_buff **temp;
 101 #define NR_SKB_COMPLETED 16
 102         struct sk_buff *completed[NR_SKB_COMPLETED];
 103         int more;
 104
 105         do {
 106                 more = 0;
 107                 skb_ptr = completed;
 108
 109                 if (__netif_tx_trylock(fifo->txq)) {
 110                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 111                                                 NR_SKB_COMPLETED, &more);
 112                         __netif_tx_unlock(fifo->txq);
 113                 }
 114
 115                 /* free SKBs */
 116                 for (temp = completed; temp != skb_ptr; temp++)
 117                         dev_consume_skb_irq(*temp);
 118         } while (more);
 119 }
 120
 121 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 122 {
 123         int i;
 124
 125         /* Complete all transmits */
 126         for (i = 0; i < vdev->no_of_vpath; i++)
 127                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 128 }
 129
 130 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 131 {
 132         int i;
 133         struct vxge_ring *ring;
 134
 135         /* Complete all receives*/
 136         for (i = 0; i < vdev->no_of_vpath; i++) {
 137                 ring = &vdev->vpaths[i].ring;
 138                 vxge_hw_vpath_poll_rx(ring->handle);
 139         }
 140 }
 141
 142 /*
 143  * vxge_callback_link_up
 144  *
 145  * This function is called during interrupt context to notify link up state
 146  * change.
 147  */
 148 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
 149 {
 150         struct net_device *dev = hldev->ndev;
 151         struct vxgedev *vdev = netdev_priv(dev);
 152
 153         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 154                 vdev->ndev->name, __func__, __LINE__);
 155         netdev_notice(vdev->ndev, "Link Up\n");
 156         vdev->stats.link_up++;
 157
 158         netif_carrier_on(vdev->ndev);
 159         netif_tx_wake_all_queues(vdev->ndev);
 160
 161         vxge_debug_entryexit(VXGE_TRACE,
 162                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 163 }
 164
 165 /*
 166  * vxge_callback_link_down
 167  *
 168  * This function is called during interrupt context to notify link down state
 169  * change.
 170  */
 171 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
 172 {
 173         struct net_device *dev = hldev->ndev;
 174         struct vxgedev *vdev = netdev_priv(dev);
 175
 176         vxge_debug_entryexit(VXGE_TRACE,
 177                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 178         netdev_notice(vdev->ndev, "Link Down\n");
 179
 180         vdev->stats.link_down++;
 181         netif_carrier_off(vdev->ndev);
 182         netif_tx_stop_all_queues(vdev->ndev);
 183
 184         vxge_debug_entryexit(VXGE_TRACE,
 185                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 186 }
 187
 188 /*
 189  * vxge_rx_alloc
 190  *
 191  * Allocate SKB.
 192  */
 193 static struct sk_buff *
 194 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 195 {
 196         struct net_device    *dev;
 197         struct sk_buff       *skb;
 198         struct vxge_rx_priv *rx_priv;
 199
 200         dev = ring->ndev;
 201         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 202                 ring->ndev->name, __func__, __LINE__);
 203
 204         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 205
 206         /* try to allocate skb first. this one may fail */
 207         skb = netdev_alloc_skb(dev, skb_size +
 208         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 209         if (skb == NULL) {
 210                 vxge_debug_mem(VXGE_ERR,
 211                         "%s: out of memory to allocate SKB", dev->name);
 212                 ring->stats.skb_alloc_fail++;
 213                 return NULL;
 214         }
 215
 216         vxge_debug_mem(VXGE_TRACE,
 217                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 218                 __func__, __LINE__, skb);
 219
 220         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 221
 222         rx_priv->skb = skb;
 223         rx_priv->skb_data = NULL;
 224         rx_priv->data_size = skb_size;
 225         vxge_debug_entryexit(VXGE_TRACE,
 226                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 227
 228         return skb;
 229 }
 230
 231 /*
 232  * vxge_rx_map
 233  */
 234 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 235 {
 236         struct vxge_rx_priv *rx_priv;
 237         dma_addr_t dma_addr;
 238
 239         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 240                 ring->ndev->name, __func__, __LINE__);
 241         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 242
 243         rx_priv->skb_data = rx_priv->skb->data;
 244         dma_addr = dma_map_single(&ring->pdev->dev, rx_priv->skb_data,
 245                                   rx_priv->data_size, DMA_FROM_DEVICE);
 246
 247         if (unlikely(dma_mapping_error(&ring->pdev->dev, dma_addr))) {
 248                 ring->stats.pci_map_fail++;
 249                 return -EIO;
 250         }
 251         vxge_debug_mem(VXGE_TRACE,
 252                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 253                 ring->ndev->name, __func__, __LINE__,
 254                 (unsigned long long)dma_addr);
 255         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 256
 257         rx_priv->data_dma = dma_addr;
 258         vxge_debug_entryexit(VXGE_TRACE,
 259                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 260
 261         return 0;
 262 }
 263
 264 /*
 265  * vxge_rx_initial_replenish
 266  * Allocation of RxD as an initial replenish procedure.
 267  */
 268 static enum vxge_hw_status
 269 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 270 {
 271         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 272         struct vxge_rx_priv *rx_priv;
 273
 274         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 275                 ring->ndev->name, __func__, __LINE__);
 276         if (vxge_rx_alloc(dtrh, ring,
 277                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 278                 return VXGE_HW_FAIL;
 279
 280         if (vxge_rx_map(dtrh, ring)) {
 281                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 282                 dev_kfree_skb(rx_priv->skb);
 283
 284                 return VXGE_HW_FAIL;
 285         }
 286         vxge_debug_entryexit(VXGE_TRACE,
 287                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 288
 289         return VXGE_HW_OK;
 290 }
 291
 292 static inline void
 293 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 294                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 295 {
 296
 297         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 298                         ring->ndev->name, __func__, __LINE__);
 299         skb_record_rx_queue(skb, ring->driver_id);
 300         skb->protocol = eth_type_trans(skb, ring->ndev);
 301
 302         u64_stats_update_begin(&ring->stats.syncp);
 303         ring->stats.rx_frms++;
 304         ring->stats.rx_bytes += pkt_length;
 305
 306         if (skb->pkt_type == PACKET_MULTICAST)
 307                 ring->stats.rx_mcast++;
 308         u64_stats_update_end(&ring->stats.syncp);
 309
 310         vxge_debug_rx(VXGE_TRACE,
 311                 "%s: %s:%d  skb protocol = %d",
 312                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 313
 314         if (ext_info->vlan &&
 315             ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
 316                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ext_info->vlan);
 317         napi_gro_receive(ring->napi_p, skb);
 318
 319         vxge_debug_entryexit(VXGE_TRACE,
 320                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 321 }
 322
 323 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 324                                     struct vxge_rx_priv *rx_priv)
 325 {
 326         dma_sync_single_for_device(&ring->pdev->dev, rx_priv->data_dma,
 327                                    rx_priv->data_size, DMA_FROM_DEVICE);
 328
 329         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 330         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 331 }
 332
 333 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 334                              void *post_dtr, struct __vxge_hw_ring *ringh)
 335 {
 336         int dtr_count = *dtr_cnt;
 337         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 338                 if (*first_dtr)
 339                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 340                 *first_dtr = post_dtr;
 341         } else
 342                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 343         dtr_count++;
 344         *dtr_cnt = dtr_count;
 345 }
 346
 347 /*
 348  * vxge_rx_1b_compl
 349  *
 350  * If the interrupt is because of a received frame or if the receive ring
 351  * contains fresh as yet un-processed frames, this function is called.
 352  */
 353 static enum vxge_hw_status
 354 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 355                  u8 t_code, void *userdata)
 356 {
 357         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 358         struct net_device *dev = ring->ndev;
 359         unsigned int dma_sizes;
 360         void *first_dtr = NULL;
 361         int dtr_cnt = 0;
 362         int data_size;
 363         dma_addr_t data_dma;
 364         int pkt_length;
 365         struct sk_buff *skb;
 366         struct vxge_rx_priv *rx_priv;
 367         struct vxge_hw_ring_rxd_info ext_info;
 368         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 369                 ring->ndev->name, __func__, __LINE__);
 370
 371         if (ring->budget <= 0)
 372                 goto out;
 373
 374         do {
 375                 prefetch((char *)dtr + L1_CACHE_BYTES);
 376                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 377                 skb = rx_priv->skb;
 378                 data_size = rx_priv->data_size;
 379                 data_dma = rx_priv->data_dma;
 380                 prefetch(rx_priv->skb_data);
 381
 382                 vxge_debug_rx(VXGE_TRACE,
 383                         "%s: %s:%d  skb = 0x%p",
 384                         ring->ndev->name, __func__, __LINE__, skb);
 385
 386                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 387                 pkt_length = dma_sizes;
 388
 389                 pkt_length -= ETH_FCS_LEN;
 390
 391                 vxge_debug_rx(VXGE_TRACE,
 392                         "%s: %s:%d  Packet Length = %d",
 393                         ring->ndev->name, __func__, __LINE__, pkt_length);
 394
 395                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 396
 397                 /* check skb validity */
 398                 vxge_assert(skb);
 399
 400                 prefetch((char *)skb + L1_CACHE_BYTES);
 401                 if (unlikely(t_code)) {
 402                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 403                                 VXGE_HW_OK) {
 404
 405                                 ring->stats.rx_errors++;
 406                                 vxge_debug_rx(VXGE_TRACE,
 407                                         "%s: %s :%d Rx T_code is %d",
 408                                         ring->ndev->name, __func__,
 409                                         __LINE__, t_code);
 410
 411                                 /* If the t_code is not supported and if the
 412                                  * t_code is other than 0x5 (unparseable packet
 413                                  * such as unknown UPV6 header), Drop it !!!
 414                                  */
 415                                 vxge_re_pre_post(dtr, ring, rx_priv);
 416
 417                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 418                                 ring->stats.rx_dropped++;
 419                                 continue;
 420                         }
 421                 }
 422
 423                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 424                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 425                                 if (!vxge_rx_map(dtr, ring)) {
 426                                         skb_put(skb, pkt_length);
 427
 428                                         dma_unmap_single(&ring->pdev->dev,
 429                                                          data_dma, data_size,
 430                                                          DMA_FROM_DEVICE);
 431
 432                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 433                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 434                                                 ringh);
 435                                 } else {
 436                                         dev_kfree_skb(rx_priv->skb);
 437                                         rx_priv->skb = skb;
 438                                         rx_priv->data_size = data_size;
 439                                         vxge_re_pre_post(dtr, ring, rx_priv);
 440
 441                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 442                                                 ringh);
 443                                         ring->stats.rx_dropped++;
 444                                         break;
 445                                 }
 446                         } else {
 447                                 vxge_re_pre_post(dtr, ring, rx_priv);
 448
 449                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 450                                 ring->stats.rx_dropped++;
 451                                 break;
 452                         }
 453                 } else {
 454                         struct sk_buff *skb_up;
 455
 456                         skb_up = netdev_alloc_skb(dev, pkt_length +
 457                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 458                         if (skb_up != NULL) {
 459                                 skb_reserve(skb_up,
 460                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 461
 462                                 dma_sync_single_for_cpu(&ring->pdev->dev,
 463                                                         data_dma, data_size,
 464                                                         DMA_FROM_DEVICE);
 465
 466                                 vxge_debug_mem(VXGE_TRACE,
 467                                         "%s: %s:%d  skb_up = %p",
 468                                         ring->ndev->name, __func__,
 469                                         __LINE__, skb);
 470                                 memcpy(skb_up->data, skb->data, pkt_length);
 471
 472                                 vxge_re_pre_post(dtr, ring, rx_priv);
 473
 474                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 475                                         ringh);
 476                                 /* will netif_rx small SKB instead */
 477                                 skb = skb_up;
 478                                 skb_put(skb, pkt_length);
 479                         } else {
 480                                 vxge_re_pre_post(dtr, ring, rx_priv);
 481
 482                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 483                                 vxge_debug_rx(VXGE_ERR,
 484                                         "%s: vxge_rx_1b_compl: out of "
 485                                         "memory", dev->name);
 486                                 ring->stats.skb_alloc_fail++;
 487                                 break;
 488                         }
 489                 }
 490
 491                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 492                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 493                     (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */
 494                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 495                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 496                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 497                 else
 498                         skb_checksum_none_assert(skb);
 499
 500
 501                 if (ring->rx_hwts) {
 502                         struct skb_shared_hwtstamps *skb_hwts;
 503                         u32 ns = *(u32 *)(skb->head + pkt_length);
 504
 505                         skb_hwts = skb_hwtstamps(skb);
 506                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 507                 }
 508
 509                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 510                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 511                  * if rss is disabled/enabled, so key off of that.
 512                  */
 513                 if (ext_info.rth_value)
 514                         skb_set_hash(skb, ext_info.rth_value,
 515                                      PKT_HASH_TYPE_L3);
 516
 517                 vxge_rx_complete(ring, skb, ext_info.vlan,
 518                         pkt_length, &ext_info);
 519
 520                 ring->budget--;
 521                 ring->pkts_processed++;
 522                 if (!ring->budget)
 523                         break;
 524
 525         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 526                 &t_code) == VXGE_HW_OK);
 527
 528         if (first_dtr)
 529                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 530
 531 out:
 532         vxge_debug_entryexit(VXGE_TRACE,
 533                                 "%s:%d  Exiting...",
 534                                 __func__, __LINE__);
 535         return VXGE_HW_OK;
 536 }
 537
 538 /*
 539  * vxge_xmit_compl
 540  *
 541  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 542  * this function is called. It identifies the last TxD whose buffer was
 543  * freed and frees all skbs whose data have already DMA'ed into the NICs
 544  * internal memory.
 545  */
 546 static enum vxge_hw_status
 547 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 548                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 549                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 550 {
 551         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 552         struct sk_buff *skb, **done_skb = *skb_ptr;
 553         int pkt_cnt = 0;
 554
 555         vxge_debug_entryexit(VXGE_TRACE,
 556                 "%s:%d Entered....", __func__, __LINE__);
 557
 558         do {
 559                 int frg_cnt;
 560                 skb_frag_t *frag;
 561                 int i = 0, j;
 562                 struct vxge_tx_priv *txd_priv =
 563                         vxge_hw_fifo_txdl_private_get(dtr);
 564
 565                 skb = txd_priv->skb;
 566                 frg_cnt = skb_shinfo(skb)->nr_frags;
 567                 frag = &skb_shinfo(skb)->frags[0];
 568
 569                 vxge_debug_tx(VXGE_TRACE,
 570                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 571                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 572                                 __LINE__, fifo_hw, dtr, t_code);
 573                 /* check skb validity */
 574                 vxge_assert(skb);
 575                 vxge_debug_tx(VXGE_TRACE,
 576                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 577                         fifo->ndev->name, __func__, __LINE__,
 578                         skb, txd_priv, frg_cnt);
 579                 if (unlikely(t_code)) {
 580                         fifo->stats.tx_errors++;
 581                         vxge_debug_tx(VXGE_ERR,
 582                                 "%s: tx: dtr %p completed due to "
 583                                 "error t_code %01x", fifo->ndev->name,
 584                                 dtr, t_code);
 585                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 586                 }
 587
 588                 /*  for unfragmented skb */
 589                 dma_unmap_single(&fifo->pdev->dev, txd_priv->dma_buffers[i++],
 590                                  skb_headlen(skb), DMA_TO_DEVICE);
 591
 592                 for (j = 0; j < frg_cnt; j++) {
 593                         dma_unmap_page(&fifo->pdev->dev,
 594                                        txd_priv->dma_buffers[i++],
 595                                        skb_frag_size(frag), DMA_TO_DEVICE);
 596                         frag += 1;
 597                 }
 598
 599                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 600
 601                 /* Updating the statistics block */
 602                 u64_stats_update_begin(&fifo->stats.syncp);
 603                 fifo->stats.tx_frms++;
 604                 fifo->stats.tx_bytes += skb->len;
 605                 u64_stats_update_end(&fifo->stats.syncp);
 606
 607                 *done_skb++ = skb;
 608
 609                 if (--nr_skb <= 0) {
 610                         *more = 1;
 611                         break;
 612                 }
 613
 614                 pkt_cnt++;
 615                 if (pkt_cnt > fifo->indicate_max_pkts)
 616                         break;
 617
 618         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 619                                 &dtr, &t_code) == VXGE_HW_OK);
 620
 621         *skb_ptr = done_skb;
 622         if (netif_tx_queue_stopped(fifo->txq))
 623                 netif_tx_wake_queue(fifo->txq);
 624
 625         vxge_debug_entryexit(VXGE_TRACE,
 626                                 "%s: %s:%d  Exiting...",
 627                                 fifo->ndev->name, __func__, __LINE__);
 628         return VXGE_HW_OK;
 629 }
 630
 631 /* select a vpath to transmit the packet */
 632 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 633 {
 634         u16 queue_len, counter = 0;
 635         if (skb->protocol == htons(ETH_P_IP)) {
 636                 struct iphdr *ip;
 637                 struct tcphdr *th;
 638
 639                 ip = ip_hdr(skb);
 640
 641                 if (!ip_is_fragment(ip)) {
 642                         th = (struct tcphdr *)(((unsigned char *)ip) +
 643                                         ip->ihl*4);
 644
 645                         queue_len = vdev->no_of_vpath;
 646                         counter = (ntohs(th->source) +
 647                                 ntohs(th->dest)) &
 648                                 vdev->vpath_selector[queue_len - 1];
 649                         if (counter >= queue_len)
 650                                 counter = queue_len - 1;
 651                 }
 652         }
 653         return counter;
 654 }
 655
 656 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 657         struct vxge_vpath *vpath, u64 del_mac)
 658 {
 659         struct list_head *entry, *next;
 660         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 661                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 662                         return TRUE;
 663         }
 664         return FALSE;
 665 }
 666
 667 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
 668 {
 669         struct vxge_mac_addrs *new_mac_entry;
 670         u8 *mac_address = NULL;
 671
 672         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
 673                 return TRUE;
 674
 675         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
 676         if (!new_mac_entry) {
 677                 vxge_debug_mem(VXGE_ERR,
 678                         "%s: memory allocation failed",
 679                         VXGE_DRIVER_NAME);
 680                 return FALSE;
 681         }
 682
 683         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
 684
 685         /* Copy the new mac address to the list */
 686         mac_address = (u8 *)&new_mac_entry->macaddr;
 687         memcpy(mac_address, mac->macaddr, ETH_ALEN);
 688
 689         new_mac_entry->state = mac->state;
 690         vpath->mac_addr_cnt++;
 691
 692         if (is_multicast_ether_addr(mac->macaddr))
 693                 vpath->mcast_addr_cnt++;
 694
 695         return TRUE;
 696 }
 697
 698 /* Add a mac address to DA table */
 699 static enum vxge_hw_status
 700 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
 701 {
 702         enum vxge_hw_status status = VXGE_HW_OK;
 703         struct vxge_vpath *vpath;
 704         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
 705
 706         if (is_multicast_ether_addr(mac->macaddr))
 707                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
 708         else
 709                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
 710
 711         vpath = &vdev->vpaths[mac->vpath_no];
 712         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
 713                                                 mac->macmask, duplicate_mode);
 714         if (status != VXGE_HW_OK) {
 715                 vxge_debug_init(VXGE_ERR,
 716                         "DA config add entry failed for vpath:%d",
 717                         vpath->device_id);
 718         } else
 719                 if (FALSE == vxge_mac_list_add(vpath, mac))
 720                         status = -EPERM;
 721
 722         return status;
 723 }
 724
 725 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 726 {
 727         struct macInfo mac_info;
 728         u8 *mac_address = NULL;
 729         u64 mac_addr = 0, vpath_vector = 0;
 730         int vpath_idx = 0;
 731         enum vxge_hw_status status = VXGE_HW_OK;
 732         struct vxge_vpath *vpath = NULL;
 733
 734         mac_address = (u8 *)&mac_addr;
 735         memcpy(mac_address, mac_header, ETH_ALEN);
 736
 737         /* Is this mac address already in the list? */
 738         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 739                 vpath = &vdev->vpaths[vpath_idx];
 740                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 741                         return vpath_idx;
 742         }
 743
 744         memset(&mac_info, 0, sizeof(struct macInfo));
 745         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 746
 747         /* Any vpath has room to add mac address to its da table? */
 748         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 749                 vpath = &vdev->vpaths[vpath_idx];
 750                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 751                         /* Add this mac address to this vpath */
 752                         mac_info.vpath_no = vpath_idx;
 753                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 754                         status = vxge_add_mac_addr(vdev, &mac_info);
 755                         if (status != VXGE_HW_OK)
 756                                 return -EPERM;
 757                         return vpath_idx;
 758                 }
 759         }
 760
 761         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 762         vpath_idx = 0;
 763         mac_info.vpath_no = vpath_idx;
 764         /* Is the first vpath already selected as catch-basin ? */
 765         vpath = &vdev->vpaths[vpath_idx];
 766         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 767                 /* Add this mac address to this vpath */
 768                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 769                         return -EPERM;
 770                 return vpath_idx;
 771         }
 772
 773         /* Select first vpath as catch-basin */
 774         vpath_vector = vxge_mBIT(vpath->device_id);
 775         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 776                                 vxge_hw_mgmt_reg_type_mrpcim,
 777                                 0,
 778                                 (ulong)offsetof(
 779                                         struct vxge_hw_mrpcim_reg,
 780                                         rts_mgr_cbasin_cfg),
 781                                 vpath_vector);
 782         if (status != VXGE_HW_OK) {
 783                 vxge_debug_tx(VXGE_ERR,
 784                         "%s: Unable to set the vpath-%d in catch-basin mode",
 785                         VXGE_DRIVER_NAME, vpath->device_id);
 786                 return -EPERM;
 787         }
 788
 789         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 790                 return -EPERM;
 791
 792         return vpath_idx;
 793 }
 794
 795 /**
 796  * vxge_xmit
 797  * @skb : the socket buffer containing the Tx data.
 798  * @dev : device pointer.
 799  *
 800  * This function is the Tx entry point of the driver. Neterion NIC supports
 801  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 802 */
 803 static netdev_tx_t
 804 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 805 {
 806         struct vxge_fifo *fifo = NULL;
 807         void *dtr_priv;
 808         void *dtr = NULL;
 809         struct vxgedev *vdev = NULL;
 810         enum vxge_hw_status status;
 811         int frg_cnt, first_frg_len;
 812         skb_frag_t *frag;
 813         int i = 0, j = 0, avail;
 814         u64 dma_pointer;
 815         struct vxge_tx_priv *txdl_priv = NULL;
 816         struct __vxge_hw_fifo *fifo_hw;
 817         int offload_type;
 818         int vpath_no = 0;
 819
 820         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 821                         dev->name, __func__, __LINE__);
 822
 823         /* A buffer with no data will be dropped */
 824         if (unlikely(skb->len <= 0)) {
 825                 vxge_debug_tx(VXGE_ERR,
 826                         "%s: Buffer has no data..", dev->name);
 827                 dev_kfree_skb_any(skb);
 828                 return NETDEV_TX_OK;
 829         }
 830
 831         vdev = netdev_priv(dev);
 832
 833         if (unlikely(!is_vxge_card_up(vdev))) {
 834                 vxge_debug_tx(VXGE_ERR,
 835                         "%s: vdev not initialized", dev->name);
 836                 dev_kfree_skb_any(skb);
 837                 return NETDEV_TX_OK;
 838         }
 839
 840         if (vdev->config.addr_learn_en) {
 841                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 842                 if (vpath_no == -EPERM) {
 843                         vxge_debug_tx(VXGE_ERR,
 844                                 "%s: Failed to store the mac address",
 845                                 dev->name);
 846                         dev_kfree_skb_any(skb);
 847                         return NETDEV_TX_OK;
 848                 }
 849         }
 850
 851         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 852                 vpath_no = skb_get_queue_mapping(skb);
 853         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 854                 vpath_no = vxge_get_vpath_no(vdev, skb);
 855
 856         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 857
 858         if (vpath_no >= vdev->no_of_vpath)
 859                 vpath_no = 0;
 860
 861         fifo = &vdev->vpaths[vpath_no].fifo;
 862         fifo_hw = fifo->handle;
 863
 864         if (netif_tx_queue_stopped(fifo->txq))
 865                 return NETDEV_TX_BUSY;
 866
 867         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 868         if (avail == 0) {
 869                 vxge_debug_tx(VXGE_ERR,
 870                         "%s: No free TXDs available", dev->name);
 871                 fifo->stats.txd_not_free++;
 872                 goto _exit0;
 873         }
 874
 875         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 876          * completion will resume the queue.
 877          */
 878         if (avail == 1)
 879                 netif_tx_stop_queue(fifo->txq);
 880
 881         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 882         if (unlikely(status != VXGE_HW_OK)) {
 883                 vxge_debug_tx(VXGE_ERR,
 884                    "%s: Out of descriptors .", dev->name);
 885                 fifo->stats.txd_out_of_desc++;
 886                 goto _exit0;
 887         }
 888
 889         vxge_debug_tx(VXGE_TRACE,
 890                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 891                 dev->name, __func__, __LINE__,
 892                 fifo_hw, dtr, dtr_priv);
 893
 894         if (skb_vlan_tag_present(skb)) {
 895                 u16 vlan_tag = skb_vlan_tag_get(skb);
 896                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 897         }
 898
 899         first_frg_len = skb_headlen(skb);
 900
 901         dma_pointer = dma_map_single(&fifo->pdev->dev, skb->data,
 902                                      first_frg_len, DMA_TO_DEVICE);
 903
 904         if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer))) {
 905                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 906                 fifo->stats.pci_map_fail++;
 907                 goto _exit0;
 908         }
 909
 910         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 911         txdl_priv->skb = skb;
 912         txdl_priv->dma_buffers[j] = dma_pointer;
 913
 914         frg_cnt = skb_shinfo(skb)->nr_frags;
 915         vxge_debug_tx(VXGE_TRACE,
 916                         "%s: %s:%d skb = %p txdl_priv = %p "
 917                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 918                         __func__, __LINE__, skb, txdl_priv,
 919                         frg_cnt, (unsigned long long)dma_pointer);
 920
 921         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 922                 first_frg_len);
 923
 924         frag = &skb_shinfo(skb)->frags[0];
 925         for (i = 0; i < frg_cnt; i++) {
 926                 /* ignore 0 length fragment */
 927                 if (!skb_frag_size(frag))
 928                         continue;
 929
 930                 dma_pointer = (u64)skb_frag_dma_map(&fifo->pdev->dev, frag,
 931                                                     0, skb_frag_size(frag),
 932                                                     DMA_TO_DEVICE);
 933
 934                 if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer)))
 935                         goto _exit2;
 936                 vxge_debug_tx(VXGE_TRACE,
 937                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 938                                 dev->name, __func__, __LINE__, i,
 939                                 (unsigned long long)dma_pointer);
 940
 941                 txdl_priv->dma_buffers[j] = dma_pointer;
 942                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 943                                         skb_frag_size(frag));
 944                 frag += 1;
 945         }
 946
 947         offload_type = vxge_offload_type(skb);
 948
 949         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 950                 int mss = vxge_tcp_mss(skb);
 951                 if (mss) {
 952                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 953                                 dev->name, __func__, __LINE__, mss);
 954                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 955                 } else {
 956                         vxge_assert(skb->len <=
 957                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 958                         vxge_assert(0);
 959                         goto _exit1;
 960                 }
 961         }
 962
 963         if (skb->ip_summed == CHECKSUM_PARTIAL)
 964                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 965                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 966                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 967                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 968
 969         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 970
 971         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 972                 dev->name, __func__, __LINE__);
 973         return NETDEV_TX_OK;
 974
 975 _exit2:
 976         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 977 _exit1:
 978         j = 0;
 979         frag = &skb_shinfo(skb)->frags[0];
 980
 981         dma_unmap_single(&fifo->pdev->dev, txdl_priv->dma_buffers[j++],
 982                          skb_headlen(skb), DMA_TO_DEVICE);
 983
 984         for (; j < i; j++) {
 985                 dma_unmap_page(&fifo->pdev->dev, txdl_priv->dma_buffers[j],
 986                                skb_frag_size(frag), DMA_TO_DEVICE);
 987                 frag += 1;
 988         }
 989
 990         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 991 _exit0:
 992         netif_tx_stop_queue(fifo->txq);
 993         dev_kfree_skb_any(skb);
 994
 995         return NETDEV_TX_OK;
 996 }
 997
 998 /*
 999  * vxge_rx_term
1000  *
1001  * Function will be called by hw function to abort all outstanding receive
1002  * descriptors.
1003  */
1004 static void
1005 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1006 {
1007         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1008         struct vxge_rx_priv *rx_priv =
1009                 vxge_hw_ring_rxd_private_get(dtrh);
1010
1011         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1012                         ring->ndev->name, __func__, __LINE__);
1013         if (state != VXGE_HW_RXD_STATE_POSTED)
1014                 return;
1015
1016         dma_unmap_single(&ring->pdev->dev, rx_priv->data_dma,
1017                          rx_priv->data_size, DMA_FROM_DEVICE);
1018
1019         dev_kfree_skb(rx_priv->skb);
1020         rx_priv->skb_data = NULL;
1021
1022         vxge_debug_entryexit(VXGE_TRACE,
1023                 "%s: %s:%d  Exiting...",
1024                 ring->ndev->name, __func__, __LINE__);
1025 }
1026
1027 /*
1028  * vxge_tx_term
1029  *
1030  * Function will be called to abort all outstanding tx descriptors
1031  */
1032 static void
1033 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1034 {
1035         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1036         skb_frag_t *frag;
1037         int i = 0, j, frg_cnt;
1038         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1039         struct sk_buff *skb = txd_priv->skb;
1040
1041         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1042
1043         if (state != VXGE_HW_TXDL_STATE_POSTED)
1044                 return;
1045
1046         /* check skb validity */
1047         vxge_assert(skb);
1048         frg_cnt = skb_shinfo(skb)->nr_frags;
1049         frag = &skb_shinfo(skb)->frags[0];
1050
1051         /*  for unfragmented skb */
1052         dma_unmap_single(&fifo->pdev->dev, txd_priv->dma_buffers[i++],
1053                          skb_headlen(skb), DMA_TO_DEVICE);
1054
1055         for (j = 0; j < frg_cnt; j++) {
1056                 dma_unmap_page(&fifo->pdev->dev, txd_priv->dma_buffers[i++],
1057                                skb_frag_size(frag), DMA_TO_DEVICE);
1058                 frag += 1;
1059         }
1060
1061         dev_kfree_skb(skb);
1062
1063         vxge_debug_entryexit(VXGE_TRACE,
1064                 "%s:%d  Exiting...", __func__, __LINE__);
1065 }
1066
1067 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1068 {
1069         struct list_head *entry, *next;
1070         u64 del_mac = 0;
1071         u8 *mac_address = (u8 *) (&del_mac);
1072
1073         /* Copy the mac address to delete from the list */
1074         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1075
1076         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1077                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1078                         list_del(entry);
1079                         kfree(entry);
1080                         vpath->mac_addr_cnt--;
1081
1082                         if (is_multicast_ether_addr(mac->macaddr))
1083                                 vpath->mcast_addr_cnt--;
1084                         return TRUE;
1085                 }
1086         }
1087
1088         return FALSE;
1089 }
1090
1091 /* delete a mac address from DA table */
1092 static enum vxge_hw_status
1093 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1094 {
1095         enum vxge_hw_status status = VXGE_HW_OK;
1096         struct vxge_vpath *vpath;
1097
1098         vpath = &vdev->vpaths[mac->vpath_no];
1099         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1100                                                 mac->macmask);
1101         if (status != VXGE_HW_OK) {
1102                 vxge_debug_init(VXGE_ERR,
1103                         "DA config delete entry failed for vpath:%d",
1104                         vpath->device_id);
1105         } else
1106                 vxge_mac_list_del(vpath, mac);
1107         return status;
1108 }
1109
1110 /**
1111  * vxge_set_multicast
1112  * @dev: pointer to the device structure
1113  *
1114  * Entry point for multicast address enable/disable
1115  * This function is a driver entry point which gets called by the kernel
1116  * whenever multicast addresses must be enabled/disabled. This also gets
1117  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1118  * determine, if multicast address must be enabled or if promiscuous mode
1119  * is to be disabled etc.
1120  */
1121 static void vxge_set_multicast(struct net_device *dev)
1122 {
1123         struct netdev_hw_addr *ha;
1124         struct vxgedev *vdev;
1125         int i, mcast_cnt = 0;
1126         struct vxge_vpath *vpath;
1127         enum vxge_hw_status status = VXGE_HW_OK;
1128         struct macInfo mac_info;
1129         int vpath_idx = 0;
1130         struct vxge_mac_addrs *mac_entry;
1131         struct list_head *list_head;
1132         struct list_head *entry, *next;
1133         u8 *mac_address = NULL;
1134
1135         vxge_debug_entryexit(VXGE_TRACE,
1136                 "%s:%d", __func__, __LINE__);
1137
1138         vdev = netdev_priv(dev);
1139
1140         if (unlikely(!is_vxge_card_up(vdev)))
1141                 return;
1142
1143         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1144                 for (i = 0; i < vdev->no_of_vpath; i++) {
1145                         vpath = &vdev->vpaths[i];
1146                         vxge_assert(vpath->is_open);
1147                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1148                         if (status != VXGE_HW_OK)
1149                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1150                                                 "multicast, status %d", status);
1151                         vdev->all_multi_flg = 1;
1152                 }
1153         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1154                 for (i = 0; i < vdev->no_of_vpath; i++) {
1155                         vpath = &vdev->vpaths[i];
1156                         vxge_assert(vpath->is_open);
1157                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1158                         if (status != VXGE_HW_OK)
1159                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1160                                                 "multicast, status %d", status);
1161                         vdev->all_multi_flg = 0;
1162                 }
1163         }
1164
1165
1166         if (!vdev->config.addr_learn_en) {
1167                 for (i = 0; i < vdev->no_of_vpath; i++) {
1168                         vpath = &vdev->vpaths[i];
1169                         vxge_assert(vpath->is_open);
1170
1171                         if (dev->flags & IFF_PROMISC)
1172                                 status = vxge_hw_vpath_promisc_enable(
1173                                         vpath->handle);
1174                         else
1175                                 status = vxge_hw_vpath_promisc_disable(
1176                                         vpath->handle);
1177                         if (status != VXGE_HW_OK)
1178                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1179                                         ", status %d", dev->flags&IFF_PROMISC ?
1180                                         "enable" : "disable", status);
1181                 }
1182         }
1183
1184         memset(&mac_info, 0, sizeof(struct macInfo));
1185         /* Update individual M_CAST address list */
1186         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1187                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1188                 list_head = &vdev->vpaths[0].mac_addr_list;
1189                 if ((netdev_mc_count(dev) +
1190                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1191                                 vdev->vpaths[0].max_mac_addr_cnt)
1192                         goto _set_all_mcast;
1193
1194                 /* Delete previous MC's */
1195                 for (i = 0; i < mcast_cnt; i++) {
1196                         list_for_each_safe(entry, next, list_head) {
1197                                 mac_entry = (struct vxge_mac_addrs *)entry;
1198                                 /* Copy the mac address to delete */
1199                                 mac_address = (u8 *)&mac_entry->macaddr;
1200                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1201
1202                                 if (is_multicast_ether_addr(mac_info.macaddr)) {
1203                                         for (vpath_idx = 0; vpath_idx <
1204                                                 vdev->no_of_vpath;
1205                                                 vpath_idx++) {
1206                                                 mac_info.vpath_no = vpath_idx;
1207                                                 status = vxge_del_mac_addr(
1208                                                                 vdev,
1209                                                                 &mac_info);
1210                                         }
1211                                 }
1212                         }
1213                 }
1214
1215                 /* Add new ones */
1216                 netdev_for_each_mc_addr(ha, dev) {
1217                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1218                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1219                                         vpath_idx++) {
1220                                 mac_info.vpath_no = vpath_idx;
1221                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1222                                 status = vxge_add_mac_addr(vdev, &mac_info);
1223                                 if (status != VXGE_HW_OK) {
1224                                         vxge_debug_init(VXGE_ERR,
1225                                                 "%s:%d Setting individual"
1226                                                 "multicast address failed",
1227                                                 __func__, __LINE__);
1228                                         goto _set_all_mcast;
1229                                 }
1230                         }
1231                 }
1232
1233                 return;
1234 _set_all_mcast:
1235                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1236                 /* Delete previous MC's */
1237                 for (i = 0; i < mcast_cnt; i++) {
1238                         list_for_each_safe(entry, next, list_head) {
1239                                 mac_entry = (struct vxge_mac_addrs *)entry;
1240                                 /* Copy the mac address to delete */
1241                                 mac_address = (u8 *)&mac_entry->macaddr;
1242                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1243
1244                                 if (is_multicast_ether_addr(mac_info.macaddr))
1245                                         break;
1246                         }
1247
1248                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1249                                         vpath_idx++) {
1250                                 mac_info.vpath_no = vpath_idx;
1251                                 status = vxge_del_mac_addr(vdev, &mac_info);
1252                         }
1253                 }
1254
1255                 /* Enable all multicast */
1256                 for (i = 0; i < vdev->no_of_vpath; i++) {
1257                         vpath = &vdev->vpaths[i];
1258                         vxge_assert(vpath->is_open);
1259
1260                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1261                         if (status != VXGE_HW_OK) {
1262                                 vxge_debug_init(VXGE_ERR,
1263                                         "%s:%d Enabling all multicasts failed",
1264                                          __func__, __LINE__);
1265                         }
1266                         vdev->all_multi_flg = 1;
1267                 }
1268                 dev->flags |= IFF_ALLMULTI;
1269         }
1270
1271         vxge_debug_entryexit(VXGE_TRACE,
1272                 "%s:%d  Exiting...", __func__, __LINE__);
1273 }
1274
1275 /**
1276  * vxge_set_mac_addr
1277  * @dev: pointer to the device structure
1278  * @p: socket info
1279  *
1280  * Update entry "0" (default MAC addr)
1281  */
1282 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1283 {
1284         struct sockaddr *addr = p;
1285         struct vxgedev *vdev;
1286         enum vxge_hw_status status = VXGE_HW_OK;
1287         struct macInfo mac_info_new, mac_info_old;
1288         int vpath_idx = 0;
1289
1290         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1291
1292         vdev = netdev_priv(dev);
1293
1294         if (!is_valid_ether_addr(addr->sa_data))
1295                 return -EINVAL;
1296
1297         memset(&mac_info_new, 0, sizeof(struct macInfo));
1298         memset(&mac_info_old, 0, sizeof(struct macInfo));
1299
1300         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1301                 __func__, __LINE__);
1302
1303         /* Get the old address */
1304         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1305
1306         /* Copy the new address */
1307         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1308
1309         /* First delete the old mac address from all the vpaths
1310         as we can't specify the index while adding new mac address */
1311         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1312                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1313                 if (!vpath->is_open) {
1314                         /* This can happen when this interface is added/removed
1315                         to the bonding interface. Delete this station address
1316                         from the linked list */
1317                         vxge_mac_list_del(vpath, &mac_info_old);
1318
1319                         /* Add this new address to the linked list
1320                         for later restoring */
1321                         vxge_mac_list_add(vpath, &mac_info_new);
1322
1323                         continue;
1324                 }
1325                 /* Delete the station address */
1326                 mac_info_old.vpath_no = vpath_idx;
1327                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1328         }
1329
1330         if (unlikely(!is_vxge_card_up(vdev))) {
1331                 eth_hw_addr_set(dev, addr->sa_data);
1332                 return VXGE_HW_OK;
1333         }
1334
1335         /* Set this mac address to all the vpaths */
1336         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1337                 mac_info_new.vpath_no = vpath_idx;
1338                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1339                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1340                 if (status != VXGE_HW_OK)
1341                         return -EINVAL;
1342         }
1343
1344         eth_hw_addr_set(dev, addr->sa_data);
1345
1346         return status;
1347 }
1348
1349 /*
1350  * vxge_vpath_intr_enable
1351  * @vdev: pointer to vdev
1352  * @vp_id: vpath for which to enable the interrupts
1353  *
1354  * Enables the interrupts for the vpath
1355 */
1356 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1357 {
1358         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1359         int msix_id = 0;
1360         int tim_msix_id[4] = {0, 1, 0, 0};
1361         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1362
1363         vxge_hw_vpath_intr_enable(vpath->handle);
1364
1365         if (vdev->config.intr_type == INTA)
1366                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1367         else {
1368                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1369                         alarm_msix_id);
1370
1371                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1372                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1373                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1374
1375                 /* enable the alarm vector */
1376                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1377                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1378                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1379         }
1380 }
1381
1382 /*
1383  * vxge_vpath_intr_disable
1384  * @vdev: pointer to vdev
1385  * @vp_id: vpath for which to disable the interrupts
1386  *
1387  * Disables the interrupts for the vpath
1388 */
1389 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1390 {
1391         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1392         struct __vxge_hw_device *hldev;
1393         int msix_id;
1394
1395         hldev = pci_get_drvdata(vdev->pdev);
1396
1397         vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1398
1399         vxge_hw_vpath_intr_disable(vpath->handle);
1400
1401         if (vdev->config.intr_type == INTA)
1402                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1403         else {
1404                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1405                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1406                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1407
1408                 /* disable the alarm vector */
1409                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1410                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1411                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1412         }
1413 }
1414
1415 /* list all mac addresses from DA table */
1416 static enum vxge_hw_status
1417 vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac)
1418 {
1419         enum vxge_hw_status status = VXGE_HW_OK;
1420         unsigned char macmask[ETH_ALEN];
1421         unsigned char macaddr[ETH_ALEN];
1422
1423         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1424                                 macaddr, macmask);
1425         if (status != VXGE_HW_OK) {
1426                 vxge_debug_init(VXGE_ERR,
1427                         "DA config list entry failed for vpath:%d",
1428                         vpath->device_id);
1429                 return status;
1430         }
1431
1432         while (!ether_addr_equal(mac->macaddr, macaddr)) {
1433                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1434                                 macaddr, macmask);
1435                 if (status != VXGE_HW_OK)
1436                         break;
1437         }
1438
1439         return status;
1440 }
1441
1442 /* Store all mac addresses from the list to the DA table */
1443 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1444 {
1445         enum vxge_hw_status status = VXGE_HW_OK;
1446         struct macInfo mac_info;
1447         u8 *mac_address = NULL;
1448         struct list_head *entry, *next;
1449
1450         memset(&mac_info, 0, sizeof(struct macInfo));
1451
1452         if (vpath->is_open) {
1453                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1454                         mac_address =
1455                                 (u8 *)&
1456                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1457                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1458                         ((struct vxge_mac_addrs *)entry)->state =
1459                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1460                         /* does this mac address already exist in da table? */
1461                         status = vxge_search_mac_addr_in_da_table(vpath,
1462                                 &mac_info);
1463                         if (status != VXGE_HW_OK) {
1464                                 /* Add this mac address to the DA table */
1465                                 status = vxge_hw_vpath_mac_addr_add(
1466                                         vpath->handle, mac_info.macaddr,
1467                                         mac_info.macmask,
1468                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1469                                 if (status != VXGE_HW_OK) {
1470                                         vxge_debug_init(VXGE_ERR,
1471                                             "DA add entry failed for vpath:%d",
1472                                             vpath->device_id);
1473                                         ((struct vxge_mac_addrs *)entry)->state
1474                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1475                                 }
1476                         }
1477                 }
1478         }
1479
1480         return status;
1481 }
1482
1483 /* Store all vlan ids from the list to the vid table */
1484 static enum vxge_hw_status
1485 vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1486 {
1487         enum vxge_hw_status status = VXGE_HW_OK;
1488         struct vxgedev *vdev = vpath->vdev;
1489         u16 vid;
1490
1491         if (!vpath->is_open)
1492                 return status;
1493
1494         for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID)
1495                 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1496
1497         return status;
1498 }
1499
1500 /*
1501  * vxge_reset_vpath
1502  * @vdev: pointer to vdev
1503  * @vp_id: vpath to reset
1504  *
1505  * Resets the vpath
1506 */
1507 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1508 {
1509         enum vxge_hw_status status = VXGE_HW_OK;
1510         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1511         int ret = 0;
1512
1513         /* check if device is down already */
1514         if (unlikely(!is_vxge_card_up(vdev)))
1515                 return 0;
1516
1517         /* is device reset already scheduled */
1518         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1519                 return 0;
1520
1521         if (vpath->handle) {
1522                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1523                         if (is_vxge_card_up(vdev) &&
1524                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1525                                         != VXGE_HW_OK) {
1526                                 vxge_debug_init(VXGE_ERR,
1527                                         "vxge_hw_vpath_recover_from_reset"
1528                                         "failed for vpath:%d", vp_id);
1529                                 return status;
1530                         }
1531                 } else {
1532                         vxge_debug_init(VXGE_ERR,
1533                                 "vxge_hw_vpath_reset failed for"
1534                                 "vpath:%d", vp_id);
1535                         return status;
1536                 }
1537         } else
1538                 return VXGE_HW_FAIL;
1539
1540         vxge_restore_vpath_mac_addr(vpath);
1541         vxge_restore_vpath_vid_table(vpath);
1542
1543         /* Enable all broadcast */
1544         vxge_hw_vpath_bcast_enable(vpath->handle);
1545
1546         /* Enable all multicast */
1547         if (vdev->all_multi_flg) {
1548                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1549                 if (status != VXGE_HW_OK)
1550                         vxge_debug_init(VXGE_ERR,
1551                                 "%s:%d Enabling multicast failed",
1552                                 __func__, __LINE__);
1553         }
1554
1555         /* Enable the interrupts */
1556         vxge_vpath_intr_enable(vdev, vp_id);
1557
1558         smp_wmb();
1559
1560         /* Enable the flow of traffic through the vpath */
1561         vxge_hw_vpath_enable(vpath->handle);
1562
1563         smp_wmb();
1564         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1565         vpath->ring.last_status = VXGE_HW_OK;
1566
1567         /* Vpath reset done */
1568         clear_bit(vp_id, &vdev->vp_reset);
1569
1570         /* Start the vpath queue */
1571         if (netif_tx_queue_stopped(vpath->fifo.txq))
1572                 netif_tx_wake_queue(vpath->fifo.txq);
1573
1574         return ret;
1575 }
1576
1577 /* Configure CI */
1578 static void vxge_config_ci_for_tti_rti(struct vxgedev *vdev)
1579 {
1580         int i = 0;
1581
1582         /* Enable CI for RTI */
1583         if (vdev->config.intr_type == MSI_X) {
1584                 for (i = 0; i < vdev->no_of_vpath; i++) {
1585                         struct __vxge_hw_ring *hw_ring;
1586
1587                         hw_ring = vdev->vpaths[i].ring.handle;
1588                         vxge_hw_vpath_dynamic_rti_ci_set(hw_ring);
1589                 }
1590         }
1591
1592         /* Enable CI for TTI */
1593         for (i = 0; i < vdev->no_of_vpath; i++) {
1594                 struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle;
1595                 vxge_hw_vpath_tti_ci_set(hw_fifo);
1596                 /*
1597                  * For Inta (with or without napi), Set CI ON for only one
1598                  * vpath. (Have only one free running timer).
1599                  */
1600                 if ((vdev->config.intr_type == INTA) && (i == 0))
1601                         break;
1602         }
1603
1604         return;
1605 }
1606
1607 static int do_vxge_reset(struct vxgedev *vdev, int event)
1608 {
1609         int ret = 0, vp_id, i;
1610
1611         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1612
1613         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1614                 /* check if device is down already */
1615                 if (unlikely(!is_vxge_card_up(vdev)))
1616                         return 0;
1617
1618                 /* is reset already scheduled */
1619                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1620                         return 0;
1621         }
1622
1623         if (event == VXGE_LL_FULL_RESET) {
1624                 netif_carrier_off(vdev->ndev);
1625
1626                 /* wait for all the vpath reset to complete */
1627                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1628                         while (test_bit(vp_id, &vdev->vp_reset))
1629                                 msleep(50);
1630                 }
1631
1632                 netif_carrier_on(vdev->ndev);
1633
1634                 /* if execution mode is set to debug, don't reset the adapter */
1635                 if (unlikely(vdev->exec_mode)) {
1636                         vxge_debug_init(VXGE_ERR,
1637                                 "%s: execution mode is debug, returning..",
1638                                 vdev->ndev->name);
1639                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1640                         netif_tx_stop_all_queues(vdev->ndev);
1641                         return 0;
1642                 }
1643         }
1644
1645         if (event == VXGE_LL_FULL_RESET) {
1646                 vxge_hw_device_wait_receive_idle(vdev->devh);
1647                 vxge_hw_device_intr_disable(vdev->devh);
1648
1649                 switch (vdev->cric_err_event) {
1650                 case VXGE_HW_EVENT_UNKNOWN:
1651                         netif_tx_stop_all_queues(vdev->ndev);
1652                         vxge_debug_init(VXGE_ERR,
1653                                 "fatal: %s: Disabling device due to"
1654                                 "unknown error",
1655                                 vdev->ndev->name);
1656                         ret = -EPERM;
1657                         goto out;
1658                 case VXGE_HW_EVENT_RESET_START:
1659                         break;
1660                 case VXGE_HW_EVENT_RESET_COMPLETE:
1661                 case VXGE_HW_EVENT_LINK_DOWN:
1662                 case VXGE_HW_EVENT_LINK_UP:
1663                 case VXGE_HW_EVENT_ALARM_CLEARED:
1664                 case VXGE_HW_EVENT_ECCERR:
1665                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1666                         ret = -EPERM;
1667                         goto out;
1668                 case VXGE_HW_EVENT_FIFO_ERR:
1669                 case VXGE_HW_EVENT_VPATH_ERR:
1670                         break;
1671                 case VXGE_HW_EVENT_CRITICAL_ERR:
1672                         netif_tx_stop_all_queues(vdev->ndev);
1673                         vxge_debug_init(VXGE_ERR,
1674                                 "fatal: %s: Disabling device due to"
1675                                 "serious error",
1676                                 vdev->ndev->name);
1677                         /* SOP or device reset required */
1678                         /* This event is not currently used */
1679                         ret = -EPERM;
1680                         goto out;
1681                 case VXGE_HW_EVENT_SERR:
1682                         netif_tx_stop_all_queues(vdev->ndev);
1683                         vxge_debug_init(VXGE_ERR,
1684                                 "fatal: %s: Disabling device due to"
1685                                 "serious error",
1686                                 vdev->ndev->name);
1687                         ret = -EPERM;
1688                         goto out;
1689                 case VXGE_HW_EVENT_SRPCIM_SERR:
1690                 case VXGE_HW_EVENT_MRPCIM_SERR:
1691                         ret = -EPERM;
1692                         goto out;
1693                 case VXGE_HW_EVENT_SLOT_FREEZE:
1694                         netif_tx_stop_all_queues(vdev->ndev);
1695                         vxge_debug_init(VXGE_ERR,
1696                                 "fatal: %s: Disabling device due to"
1697                                 "slot freeze",
1698                                 vdev->ndev->name);
1699                         ret = -EPERM;
1700                         goto out;
1701                 default:
1702                         break;
1703
1704                 }
1705         }
1706
1707         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1708                 netif_tx_stop_all_queues(vdev->ndev);
1709
1710         if (event == VXGE_LL_FULL_RESET) {
1711                 vxge_reset_all_vpaths(vdev);
1712         }
1713
1714         if (event == VXGE_LL_COMPL_RESET) {
1715                 for (i = 0; i < vdev->no_of_vpath; i++)
1716                         if (vdev->vpaths[i].handle) {
1717                                 if (vxge_hw_vpath_recover_from_reset(
1718                                         vdev->vpaths[i].handle)
1719                                                 != VXGE_HW_OK) {
1720                                         vxge_debug_init(VXGE_ERR,
1721                                                 "vxge_hw_vpath_recover_"
1722                                                 "from_reset failed for vpath: "
1723                                                 "%d", i);
1724                                         ret = -EPERM;
1725                                         goto out;
1726                                 }
1727                                 } else {
1728                                         vxge_debug_init(VXGE_ERR,
1729                                         "vxge_hw_vpath_reset failed for "
1730                                                 "vpath:%d", i);
1731                                         ret = -EPERM;
1732                                         goto out;
1733                                 }
1734         }
1735
1736         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1737                 /* Reprogram the DA table with populated mac addresses */
1738                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1739                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1740                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1741                 }
1742
1743                 /* enable vpath interrupts */
1744                 for (i = 0; i < vdev->no_of_vpath; i++)
1745                         vxge_vpath_intr_enable(vdev, i);
1746
1747                 vxge_hw_device_intr_enable(vdev->devh);
1748
1749                 smp_wmb();
1750
1751                 /* Indicate card up */
1752                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1753
1754                 /* Get the traffic to flow through the vpaths */
1755                 for (i = 0; i < vdev->no_of_vpath; i++) {
1756                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1757                         smp_wmb();
1758                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1759                 }
1760
1761                 netif_tx_wake_all_queues(vdev->ndev);
1762         }
1763
1764         /* configure CI */
1765         vxge_config_ci_for_tti_rti(vdev);
1766
1767 out:
1768         vxge_debug_entryexit(VXGE_TRACE,
1769                 "%s:%d  Exiting...", __func__, __LINE__);
1770
1771         /* Indicate reset done */
1772         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1773                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1774         return ret;
1775 }
1776
1777 /*
1778  * vxge_reset
1779  * @vdev: pointer to ll device
1780  *
1781  * driver may reset the chip on events of serr, eccerr, etc
1782  */
1783 static void vxge_reset(struct work_struct *work)
1784 {
1785         struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task);
1786
1787         if (!netif_running(vdev->ndev))
1788                 return;
1789
1790         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1791 }
1792
1793 /**
1794  * vxge_poll_msix - Receive handler when Receive Polling is used.
1795  * @napi: pointer to the napi structure.
1796  * @budget: Number of packets budgeted to be processed in this iteration.
1797  *
1798  * This function comes into picture only if Receive side is being handled
1799  * through polling (called NAPI in linux). It mostly does what the normal
1800  * Rx interrupt handler does in terms of descriptor and packet processing
1801  * but not in an interrupt context. Also it will process a specified number
1802  * of packets at most in one iteration. This value is passed down by the
1803  * kernel as the function argument 'budget'.
1804  */
1805 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1806 {
1807         struct vxge_ring *ring = container_of(napi, struct vxge_ring, napi);
1808         int pkts_processed;
1809         int budget_org = budget;
1810
1811         ring->budget = budget;
1812         ring->pkts_processed = 0;
1813         vxge_hw_vpath_poll_rx(ring->handle);
1814         pkts_processed = ring->pkts_processed;
1815
1816         if (pkts_processed < budget_org) {
1817                 napi_complete_done(napi, pkts_processed);
1818
1819                 /* Re enable the Rx interrupts for the vpath */
1820                 vxge_hw_channel_msix_unmask(
1821                                 (struct __vxge_hw_channel *)ring->handle,
1822                                 ring->rx_vector_no);
1823         }
1824
1825         /* We are copying and returning the local variable, in case if after
1826          * clearing the msix interrupt above, if the interrupt fires right
1827          * away which can preempt this NAPI thread */
1828         return pkts_processed;
1829 }
1830
1831 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1832 {
1833         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1834         int pkts_processed = 0;
1835         int i;
1836         int budget_org = budget;
1837         struct vxge_ring *ring;
1838
1839         struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1840
1841         for (i = 0; i < vdev->no_of_vpath; i++) {
1842                 ring = &vdev->vpaths[i].ring;
1843                 ring->budget = budget;
1844                 ring->pkts_processed = 0;
1845                 vxge_hw_vpath_poll_rx(ring->handle);
1846                 pkts_processed += ring->pkts_processed;
1847                 budget -= ring->pkts_processed;
1848                 if (budget <= 0)
1849                         break;
1850         }
1851
1852         VXGE_COMPLETE_ALL_TX(vdev);
1853
1854         if (pkts_processed < budget_org) {
1855                 napi_complete_done(napi, pkts_processed);
1856                 /* Re enable the Rx interrupts for the ring */
1857                 vxge_hw_device_unmask_all(hldev);
1858                 vxge_hw_device_flush_io(hldev);
1859         }
1860
1861         return pkts_processed;
1862 }
1863
1864 #ifdef CONFIG_NET_POLL_CONTROLLER
1865 /**
1866  * vxge_netpoll - netpoll event handler entry point
1867  * @dev : pointer to the device structure.
1868  * Description:
1869  *      This function will be called by upper layer to check for events on the
1870  * interface in situations where interrupts are disabled. It is used for
1871  * specific in-kernel networking tasks, such as remote consoles and kernel
1872  * debugging over the network (example netdump in RedHat).
1873  */
1874 static void vxge_netpoll(struct net_device *dev)
1875 {
1876         struct vxgedev *vdev = netdev_priv(dev);
1877         struct pci_dev *pdev = vdev->pdev;
1878         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
1879         const int irq = pdev->irq;
1880
1881         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1882
1883         if (pci_channel_offline(pdev))
1884                 return;
1885
1886         disable_irq(irq);
1887         vxge_hw_device_clear_tx_rx(hldev);
1888
1889         vxge_hw_device_clear_tx_rx(hldev);
1890         VXGE_COMPLETE_ALL_RX(vdev);
1891         VXGE_COMPLETE_ALL_TX(vdev);
1892
1893         enable_irq(irq);
1894
1895         vxge_debug_entryexit(VXGE_TRACE,
1896                 "%s:%d  Exiting...", __func__, __LINE__);
1897 }
1898 #endif
1899
1900 /* RTH configuration */
1901 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1902 {
1903         enum vxge_hw_status status = VXGE_HW_OK;
1904         struct vxge_hw_rth_hash_types hash_types;
1905         u8 itable[256] = {0}; /* indirection table */
1906         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1907         int index;
1908
1909         /*
1910          * Filling
1911          *      - itable with bucket numbers
1912          *      - mtable with bucket-to-vpath mapping
1913          */
1914         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1915                 itable[index] = index;
1916                 mtable[index] = index % vdev->no_of_vpath;
1917         }
1918
1919         /* set indirection table, bucket-to-vpath mapping */
1920         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1921                                                 vdev->no_of_vpath,
1922                                                 mtable, itable,
1923                                                 vdev->config.rth_bkt_sz);
1924         if (status != VXGE_HW_OK) {
1925                 vxge_debug_init(VXGE_ERR,
1926                         "RTH indirection table configuration failed "
1927                         "for vpath:%d", vdev->vpaths[0].device_id);
1928                 return status;
1929         }
1930
1931         /* Fill RTH hash types */
1932         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1933         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1934         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1935         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1936         hash_types.hash_type_tcpipv6ex_en =
1937                                         vdev->config.rth_hash_type_tcpipv6ex;
1938         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1939
1940         /*
1941          * Because the itable_set() method uses the active_table field
1942          * for the target virtual path the RTH config should be updated
1943          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1944          * when steering frames.
1945          */
1946         for (index = 0; index < vdev->no_of_vpath; index++) {
1947                 status = vxge_hw_vpath_rts_rth_set(
1948                                 vdev->vpaths[index].handle,
1949                                 vdev->config.rth_algorithm,
1950                                 &hash_types,
1951                                 vdev->config.rth_bkt_sz);
1952                 if (status != VXGE_HW_OK) {
1953                         vxge_debug_init(VXGE_ERR,
1954                                 "RTH configuration failed for vpath:%d",
1955                                 vdev->vpaths[index].device_id);
1956                         return status;
1957                 }
1958         }
1959
1960         return status;
1961 }
1962
1963 /* reset vpaths */
1964 static void vxge_reset_all_vpaths(struct vxgedev *vdev)
1965 {
1966         struct vxge_vpath *vpath;
1967         int i;
1968
1969         for (i = 0; i < vdev->no_of_vpath; i++) {
1970                 vpath = &vdev->vpaths[i];
1971                 if (vpath->handle) {
1972                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1973                                 if (is_vxge_card_up(vdev) &&
1974                                         vxge_hw_vpath_recover_from_reset(
1975                                                 vpath->handle) != VXGE_HW_OK) {
1976                                         vxge_debug_init(VXGE_ERR,
1977                                                 "vxge_hw_vpath_recover_"
1978                                                 "from_reset failed for vpath: "
1979                                                 "%d", i);
1980                                         return;
1981                                 }
1982                         } else {
1983                                 vxge_debug_init(VXGE_ERR,
1984                                         "vxge_hw_vpath_reset failed for "
1985                                         "vpath:%d", i);
1986                                 return;
1987                         }
1988                 }
1989         }
1990 }
1991
1992 /* close vpaths */
1993 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
1994 {
1995         struct vxge_vpath *vpath;
1996         int i;
1997
1998         for (i = index; i < vdev->no_of_vpath; i++) {
1999                 vpath = &vdev->vpaths[i];
2000
2001                 if (vpath->handle && vpath->is_open) {
2002                         vxge_hw_vpath_close(vpath->handle);
2003                         vdev->stats.vpaths_open--;
2004                 }
2005                 vpath->is_open = 0;
2006                 vpath->handle = NULL;
2007         }
2008 }
2009
2010 /* open vpaths */
2011 static int vxge_open_vpaths(struct vxgedev *vdev)
2012 {
2013         struct vxge_hw_vpath_attr attr;
2014         enum vxge_hw_status status;
2015         struct vxge_vpath *vpath;
2016         u32 vp_id = 0;
2017         int i;
2018
2019         for (i = 0; i < vdev->no_of_vpath; i++) {
2020                 vpath = &vdev->vpaths[i];
2021                 vxge_assert(vpath->is_configured);
2022
2023                 if (!vdev->titan1) {
2024                         struct vxge_hw_vp_config *vcfg;
2025                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2026
2027                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2028                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2029                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2030                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2031                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2032                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2033                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2034                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2035                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2036                 }
2037
2038                 attr.vp_id = vpath->device_id;
2039                 attr.fifo_attr.callback = vxge_xmit_compl;
2040                 attr.fifo_attr.txdl_term = vxge_tx_term;
2041                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2042                 attr.fifo_attr.userdata = &vpath->fifo;
2043
2044                 attr.ring_attr.callback = vxge_rx_1b_compl;
2045                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2046                 attr.ring_attr.rxd_term = vxge_rx_term;
2047                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2048                 attr.ring_attr.userdata = &vpath->ring;
2049
2050                 vpath->ring.ndev = vdev->ndev;
2051                 vpath->ring.pdev = vdev->pdev;
2052
2053                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2054                 if (status == VXGE_HW_OK) {
2055                         vpath->fifo.handle =
2056                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2057                         vpath->ring.handle =
2058                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2059                         vpath->fifo.tx_steering_type =
2060                                 vdev->config.tx_steering_type;
2061                         vpath->fifo.ndev = vdev->ndev;
2062                         vpath->fifo.pdev = vdev->pdev;
2063
2064                         u64_stats_init(&vpath->fifo.stats.syncp);
2065                         u64_stats_init(&vpath->ring.stats.syncp);
2066
2067                         if (vdev->config.tx_steering_type)
2068                                 vpath->fifo.txq =
2069                                         netdev_get_tx_queue(vdev->ndev, i);
2070                         else
2071                                 vpath->fifo.txq =
2072                                         netdev_get_tx_queue(vdev->ndev, 0);
2073                         vpath->fifo.indicate_max_pkts =
2074                                 vdev->config.fifo_indicate_max_pkts;
2075                         vpath->fifo.tx_vector_no = 0;
2076                         vpath->ring.rx_vector_no = 0;
2077                         vpath->ring.rx_hwts = vdev->rx_hwts;
2078                         vpath->is_open = 1;
2079                         vdev->vp_handles[i] = vpath->handle;
2080                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2081                         vdev->stats.vpaths_open++;
2082                 } else {
2083                         vdev->stats.vpath_open_fail++;
2084                         vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2085                                         "open with status: %d",
2086                                         vdev->ndev->name, vpath->device_id,
2087                                         status);
2088                         vxge_close_vpaths(vdev, 0);
2089                         return -EPERM;
2090                 }
2091
2092                 vp_id = vpath->handle->vpath->vp_id;
2093                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2094         }
2095
2096         return VXGE_HW_OK;
2097 }
2098
2099 /**
2100  *  adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing
2101  *  if the interrupts are not within a range
2102  *  @fifo: pointer to transmit fifo structure
2103  *  Description: The function changes boundary timer and restriction timer
2104  *  value depends on the traffic
2105  *  Return Value: None
2106  */
2107 static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo)
2108 {
2109         fifo->interrupt_count++;
2110         if (time_before(fifo->jiffies + HZ / 100, jiffies)) {
2111                 struct __vxge_hw_fifo *hw_fifo = fifo->handle;
2112
2113                 fifo->jiffies = jiffies;
2114                 if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT &&
2115                     hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
2116                         hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
2117                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2118                 } else if (hw_fifo->rtimer != 0) {
2119                         hw_fifo->rtimer = 0;
2120                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2121                 }
2122                 fifo->interrupt_count = 0;
2123         }
2124 }
2125
2126 /**
2127  *  adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing
2128  *  if the interrupts are not within a range
2129  *  @ring: pointer to receive ring structure
2130  *  Description: The function increases of decreases the packet counts within
2131  *  the ranges of traffic utilization, if the interrupts due to this ring are
2132  *  not within a fixed range.
2133  *  Return Value: Nothing
2134  */
2135 static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring)
2136 {
2137         ring->interrupt_count++;
2138         if (time_before(ring->jiffies + HZ / 100, jiffies)) {
2139                 struct __vxge_hw_ring *hw_ring = ring->handle;
2140
2141                 ring->jiffies = jiffies;
2142                 if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT &&
2143                     hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
2144                         hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
2145                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2146                 } else if (hw_ring->rtimer != 0) {
2147                         hw_ring->rtimer = 0;
2148                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2149                 }
2150                 ring->interrupt_count = 0;
2151         }
2152 }
2153
2154 /*
2155  *  vxge_isr_napi
2156  *  @irq: the irq of the device.
2157  *  @dev_id: a void pointer to the hldev structure of the Titan device
2158  *  @ptregs: pointer to the registers pushed on the stack.
2159  *
2160  *  This function is the ISR handler of the device when napi is enabled. It
2161  *  identifies the reason for the interrupt and calls the relevant service
2162  *  routines.
2163  */
2164 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2165 {
2166         struct __vxge_hw_device *hldev;
2167         u64 reason;
2168         enum vxge_hw_status status;
2169         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2170
2171         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2172
2173         hldev = pci_get_drvdata(vdev->pdev);
2174
2175         if (pci_channel_offline(vdev->pdev))
2176                 return IRQ_NONE;
2177
2178         if (unlikely(!is_vxge_card_up(vdev)))
2179                 return IRQ_HANDLED;
2180
2181         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2182         if (status == VXGE_HW_OK) {
2183                 vxge_hw_device_mask_all(hldev);
2184
2185                 if (reason &
2186                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2187                         vdev->vpaths_deployed >>
2188                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2189
2190                         vxge_hw_device_clear_tx_rx(hldev);
2191                         napi_schedule(&vdev->napi);
2192                         vxge_debug_intr(VXGE_TRACE,
2193                                 "%s:%d  Exiting...", __func__, __LINE__);
2194                         return IRQ_HANDLED;
2195                 } else
2196                         vxge_hw_device_unmask_all(hldev);
2197         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2198                 (status == VXGE_HW_ERR_CRITICAL) ||
2199                 (status == VXGE_HW_ERR_FIFO))) {
2200                 vxge_hw_device_mask_all(hldev);
2201                 vxge_hw_device_flush_io(hldev);
2202                 return IRQ_HANDLED;
2203         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2204                 return IRQ_HANDLED;
2205
2206         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2207         return IRQ_NONE;
2208 }
2209
2210 static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
2211 {
2212         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2213
2214         adaptive_coalesce_tx_interrupts(fifo);
2215
2216         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle,
2217                                   fifo->tx_vector_no);
2218
2219         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle,
2220                                    fifo->tx_vector_no);
2221
2222         VXGE_COMPLETE_VPATH_TX(fifo);
2223
2224         vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
2225                                     fifo->tx_vector_no);
2226
2227         return IRQ_HANDLED;
2228 }
2229
2230 static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id)
2231 {
2232         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2233
2234         adaptive_coalesce_rx_interrupts(ring);
2235
2236         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2237                                   ring->rx_vector_no);
2238
2239         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle,
2240                                    ring->rx_vector_no);
2241
2242         napi_schedule(&ring->napi);
2243         return IRQ_HANDLED;
2244 }
2245
2246 static irqreturn_t
2247 vxge_alarm_msix_handle(int irq, void *dev_id)
2248 {
2249         int i;
2250         enum vxge_hw_status status;
2251         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2252         struct vxgedev *vdev = vpath->vdev;
2253         int msix_id = (vpath->handle->vpath->vp_id *
2254                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2255
2256         for (i = 0; i < vdev->no_of_vpath; i++) {
2257                 /* Reduce the chance of losing alarm interrupts by masking
2258                  * the vector. A pending bit will be set if an alarm is
2259                  * generated and on unmask the interrupt will be fired.
2260                  */
2261                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2262                 vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
2263
2264                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2265                         vdev->exec_mode);
2266                 if (status == VXGE_HW_OK) {
2267                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2268                                                   msix_id);
2269                         continue;
2270                 }
2271                 vxge_debug_intr(VXGE_ERR,
2272                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2273                         VXGE_DRIVER_NAME, status);
2274         }
2275         return IRQ_HANDLED;
2276 }
2277
2278 static int vxge_alloc_msix(struct vxgedev *vdev)
2279 {
2280         int j, i, ret = 0;
2281         int msix_intr_vect = 0, temp;
2282         vdev->intr_cnt = 0;
2283
2284 start:
2285         /* Tx/Rx MSIX Vectors count */
2286         vdev->intr_cnt = vdev->no_of_vpath * 2;
2287
2288         /* Alarm MSIX Vectors count */
2289         vdev->intr_cnt++;
2290
2291         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2292                                 GFP_KERNEL);
2293         if (!vdev->entries) {
2294                 vxge_debug_init(VXGE_ERR,
2295                         "%s: memory allocation failed",
2296                         VXGE_DRIVER_NAME);
2297                 ret = -ENOMEM;
2298                 goto alloc_entries_failed;
2299         }
2300
2301         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2302                                      sizeof(struct vxge_msix_entry),
2303                                      GFP_KERNEL);
2304         if (!vdev->vxge_entries) {
2305                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2306                         VXGE_DRIVER_NAME);
2307                 ret = -ENOMEM;
2308                 goto alloc_vxge_entries_failed;
2309         }
2310
2311         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2312
2313                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2314
2315                 /* Initialize the fifo vector */
2316                 vdev->entries[j].entry = msix_intr_vect;
2317                 vdev->vxge_entries[j].entry = msix_intr_vect;
2318                 vdev->vxge_entries[j].in_use = 0;
2319                 j++;
2320
2321                 /* Initialize the ring vector */
2322                 vdev->entries[j].entry = msix_intr_vect + 1;
2323                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2324                 vdev->vxge_entries[j].in_use = 0;
2325                 j++;
2326         }
2327
2328         /* Initialize the alarm vector */
2329         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2330         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2331         vdev->vxge_entries[j].in_use = 0;
2332
2333         ret = pci_enable_msix_range(vdev->pdev,
2334                                     vdev->entries, 3, vdev->intr_cnt);
2335         if (ret < 0) {
2336                 ret = -ENODEV;
2337                 goto enable_msix_failed;
2338         } else if (ret < vdev->intr_cnt) {
2339                 pci_disable_msix(vdev->pdev);
2340
2341                 vxge_debug_init(VXGE_ERR,
2342                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2343                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2344                 if (max_config_vpath != VXGE_USE_DEFAULT) {
2345                         ret = -ENODEV;
2346                         goto enable_msix_failed;
2347                 }
2348
2349                 kfree(vdev->entries);
2350                 kfree(vdev->vxge_entries);
2351                 vdev->entries = NULL;
2352                 vdev->vxge_entries = NULL;
2353                 /* Try with less no of vector by reducing no of vpaths count */
2354                 temp = (ret - 1)/2;
2355                 vxge_close_vpaths(vdev, temp);
2356                 vdev->no_of_vpath = temp;
2357                 goto start;
2358         }
2359         return 0;
2360
2361 enable_msix_failed:
2362         kfree(vdev->vxge_entries);
2363 alloc_vxge_entries_failed:
2364         kfree(vdev->entries);
2365 alloc_entries_failed:
2366         return ret;
2367 }
2368
2369 static int vxge_enable_msix(struct vxgedev *vdev)
2370 {
2371
2372         int i, ret = 0;
2373         /* 0 - Tx, 1 - Rx  */
2374         int tim_msix_id[4] = {0, 1, 0, 0};
2375
2376         vdev->intr_cnt = 0;
2377
2378         /* allocate msix vectors */
2379         ret = vxge_alloc_msix(vdev);
2380         if (!ret) {
2381                 for (i = 0; i < vdev->no_of_vpath; i++) {
2382                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2383
2384                         /* If fifo or ring are not enabled, the MSIX vector for
2385                          * it should be set to 0.
2386                          */
2387                         vpath->ring.rx_vector_no = (vpath->device_id *
2388                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2389
2390                         vpath->fifo.tx_vector_no = (vpath->device_id *
2391                                                 VXGE_HW_VPATH_MSIX_ACTIVE);
2392
2393                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2394                                                VXGE_ALARM_MSIX_ID);
2395                 }
2396         }
2397
2398         return ret;
2399 }
2400
2401 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2402 {
2403         int intr_cnt;
2404
2405         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2406                 intr_cnt++) {
2407                 if (vdev->vxge_entries[intr_cnt].in_use) {
2408                         free_irq(vdev->entries[intr_cnt].vector,
2409                                 vdev->vxge_entries[intr_cnt].arg);
2410                         vdev->vxge_entries[intr_cnt].in_use = 0;
2411                 }
2412         }
2413
2414         kfree(vdev->entries);
2415         kfree(vdev->vxge_entries);
2416         vdev->entries = NULL;
2417         vdev->vxge_entries = NULL;
2418
2419         if (vdev->config.intr_type == MSI_X)
2420                 pci_disable_msix(vdev->pdev);
2421 }
2422
2423 static void vxge_rem_isr(struct vxgedev *vdev)
2424 {
2425         if (IS_ENABLED(CONFIG_PCI_MSI) &&
2426             vdev->config.intr_type == MSI_X) {
2427                 vxge_rem_msix_isr(vdev);
2428         } else if (vdev->config.intr_type == INTA) {
2429                         free_irq(vdev->pdev->irq, vdev);
2430         }
2431 }
2432
2433 static int vxge_add_isr(struct vxgedev *vdev)
2434 {
2435         int ret = 0;
2436         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2437         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2438
2439         if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X)
2440                 ret = vxge_enable_msix(vdev);
2441
2442         if (ret) {
2443                 vxge_debug_init(VXGE_ERR,
2444                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2445                 vxge_debug_init(VXGE_ERR,
2446                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2447                 vdev->config.intr_type = INTA;
2448         }
2449
2450         if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X) {
2451                 for (intr_idx = 0;
2452                      intr_idx < (vdev->no_of_vpath *
2453                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2454
2455                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2456                         irq_req = 0;
2457
2458                         switch (msix_idx) {
2459                         case 0:
2460                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2461                                         "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2462                                         vdev->ndev->name,
2463                                         vdev->entries[intr_cnt].entry,
2464                                         pci_fun, vp_idx);
2465                                 ret = request_irq(
2466                                         vdev->entries[intr_cnt].vector,
2467                                         vxge_tx_msix_handle, 0,
2468                                         vdev->desc[intr_cnt],
2469                                         &vdev->vpaths[vp_idx].fifo);
2470                                 vdev->vxge_entries[intr_cnt].arg =
2471                                                 &vdev->vpaths[vp_idx].fifo;
2472                                 irq_req = 1;
2473                                 break;
2474                         case 1:
2475                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2476                                         "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2477                                         vdev->ndev->name,
2478                                         vdev->entries[intr_cnt].entry,
2479                                         pci_fun, vp_idx);
2480                                 ret = request_irq(
2481                                         vdev->entries[intr_cnt].vector,
2482                                         vxge_rx_msix_napi_handle, 0,
2483                                         vdev->desc[intr_cnt],
2484                                         &vdev->vpaths[vp_idx].ring);
2485                                 vdev->vxge_entries[intr_cnt].arg =
2486                                                 &vdev->vpaths[vp_idx].ring;
2487                                 irq_req = 1;
2488                                 break;
2489                         }
2490
2491                         if (ret) {
2492                                 vxge_debug_init(VXGE_ERR,
2493                                         "%s: MSIX - %d  Registration failed",
2494                                         vdev->ndev->name, intr_cnt);
2495                                 vxge_rem_msix_isr(vdev);
2496                                 vdev->config.intr_type = INTA;
2497                                 vxge_debug_init(VXGE_ERR,
2498                                         "%s: Defaulting to INTA",
2499                                         vdev->ndev->name);
2500                                 goto INTA_MODE;
2501                         }
2502
2503                         if (irq_req) {
2504                                 /* We requested for this msix interrupt */
2505                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2506                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2507                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2508                                 vxge_hw_vpath_msix_unmask(
2509                                         vdev->vpaths[vp_idx].handle,
2510                                         msix_idx);
2511                                 intr_cnt++;
2512                         }
2513
2514                         /* Point to next vpath handler */
2515                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2516                             (vp_idx < (vdev->no_of_vpath - 1)))
2517                                 vp_idx++;
2518                 }
2519
2520                 intr_cnt = vdev->no_of_vpath * 2;
2521                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2522                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2523                         vdev->ndev->name,
2524                         vdev->entries[intr_cnt].entry,
2525                         pci_fun);
2526                 /* For Alarm interrupts */
2527                 ret = request_irq(vdev->entries[intr_cnt].vector,
2528                                         vxge_alarm_msix_handle, 0,
2529                                         vdev->desc[intr_cnt],
2530                                         &vdev->vpaths[0]);
2531                 if (ret) {
2532                         vxge_debug_init(VXGE_ERR,
2533                                 "%s: MSIX - %d Registration failed",
2534                                 vdev->ndev->name, intr_cnt);
2535                         vxge_rem_msix_isr(vdev);
2536                         vdev->config.intr_type = INTA;
2537                         vxge_debug_init(VXGE_ERR,
2538                                 "%s: Defaulting to INTA",
2539                                 vdev->ndev->name);
2540                         goto INTA_MODE;
2541                 }
2542
2543                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2544                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2545                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2546                                         msix_idx);
2547                 vdev->vxge_entries[intr_cnt].in_use = 1;
2548                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2549         }
2550
2551 INTA_MODE:
2552         if (vdev->config.intr_type == INTA) {
2553                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2554                         "%s:vxge:INTA", vdev->ndev->name);
2555                 vxge_hw_device_set_intr_type(vdev->devh,
2556                         VXGE_HW_INTR_MODE_IRQLINE);
2557
2558                 vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle);
2559
2560                 ret = request_irq((int) vdev->pdev->irq,
2561                         vxge_isr_napi,
2562                         IRQF_SHARED, vdev->desc[0], vdev);
2563                 if (ret) {
2564                         vxge_debug_init(VXGE_ERR,
2565                                 "%s %s-%d: ISR registration failed",
2566                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2567                         return -ENODEV;
2568                 }
2569                 vxge_debug_init(VXGE_TRACE,
2570                         "new %s-%d line allocated",
2571                         "IRQ", vdev->pdev->irq);
2572         }
2573
2574         return VXGE_HW_OK;
2575 }
2576
2577 static void vxge_poll_vp_reset(struct timer_list *t)
2578 {
2579         struct vxgedev *vdev = from_timer(vdev, t, vp_reset_timer);
2580         int i, j = 0;
2581
2582         for (i = 0; i < vdev->no_of_vpath; i++) {
2583                 if (test_bit(i, &vdev->vp_reset)) {
2584                         vxge_reset_vpath(vdev, i);
2585                         j++;
2586                 }
2587         }
2588         if (j && (vdev->config.intr_type != MSI_X)) {
2589                 vxge_hw_device_unmask_all(vdev->devh);
2590                 vxge_hw_device_flush_io(vdev->devh);
2591         }
2592
2593         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2594 }
2595
2596 static void vxge_poll_vp_lockup(struct timer_list *t)
2597 {
2598         struct vxgedev *vdev = from_timer(vdev, t, vp_lockup_timer);
2599         enum vxge_hw_status status = VXGE_HW_OK;
2600         struct vxge_vpath *vpath;
2601         struct vxge_ring *ring;
2602         int i;
2603         unsigned long rx_frms;
2604
2605         for (i = 0; i < vdev->no_of_vpath; i++) {
2606                 ring = &vdev->vpaths[i].ring;
2607
2608                 /* Truncated to machine word size number of frames */
2609                 rx_frms = READ_ONCE(ring->stats.rx_frms);
2610
2611                 /* Did this vpath received any packets */
2612                 if (ring->stats.prev_rx_frms == rx_frms) {
2613                         status = vxge_hw_vpath_check_leak(ring->handle);
2614
2615                         /* Did it received any packets last time */
2616                         if ((VXGE_HW_FAIL == status) &&
2617                                 (VXGE_HW_FAIL == ring->last_status)) {
2618
2619                                 /* schedule vpath reset */
2620                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2621                                         vpath = &vdev->vpaths[i];
2622
2623                                         /* disable interrupts for this vpath */
2624                                         vxge_vpath_intr_disable(vdev, i);
2625
2626                                         /* stop the queue for this vpath */
2627                                         netif_tx_stop_queue(vpath->fifo.txq);
2628                                         continue;
2629                                 }
2630                         }
2631                 }
2632                 ring->stats.prev_rx_frms = rx_frms;
2633                 ring->last_status = status;
2634         }
2635
2636         /* Check every 1 milli second */
2637         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2638 }
2639
2640 static netdev_features_t vxge_fix_features(struct net_device *dev,
2641         netdev_features_t features)
2642 {
2643         netdev_features_t changed = dev->features ^ features;
2644
2645         /* Enabling RTH requires some of the logic in vxge_device_register and a
2646          * vpath reset.  Due to these restrictions, only allow modification
2647          * while the interface is down.
2648          */
2649         if ((changed & NETIF_F_RXHASH) && netif_running(dev))
2650                 features ^= NETIF_F_RXHASH;
2651
2652         return features;
2653 }
2654
2655 static int vxge_set_features(struct net_device *dev, netdev_features_t features)
2656 {
2657         struct vxgedev *vdev = netdev_priv(dev);
2658         netdev_features_t changed = dev->features ^ features;
2659
2660         if (!(changed & NETIF_F_RXHASH))
2661                 return 0;
2662
2663         /* !netif_running() ensured by vxge_fix_features() */
2664
2665         vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH);
2666         vxge_reset_all_vpaths(vdev);
2667
2668         return 0;
2669 }
2670
2671 /**
2672  * vxge_open
2673  * @dev: pointer to the device structure.
2674  *
2675  * This function is the open entry point of the driver. It mainly calls a
2676  * function to allocate Rx buffers and inserts them into the buffer
2677  * descriptors and then enables the Rx part of the NIC.
2678  * Return value: '0' on success and an appropriate (-)ve integer as
2679  * defined in errno.h file on failure.
2680  */
2681 static int vxge_open(struct net_device *dev)
2682 {
2683         enum vxge_hw_status status;
2684         struct vxgedev *vdev;
2685         struct __vxge_hw_device *hldev;
2686         struct vxge_vpath *vpath;
2687         int ret = 0;
2688         int i;
2689         u64 val64;
2690
2691         vxge_debug_entryexit(VXGE_TRACE,
2692                 "%s: %s:%d", dev->name, __func__, __LINE__);
2693
2694         vdev = netdev_priv(dev);
2695         hldev = pci_get_drvdata(vdev->pdev);
2696
2697         /* make sure you have link off by default every time Nic is
2698          * initialized */
2699         netif_carrier_off(dev);
2700
2701         /* Open VPATHs */
2702         status = vxge_open_vpaths(vdev);
2703         if (status != VXGE_HW_OK) {
2704                 vxge_debug_init(VXGE_ERR,
2705                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2706                 ret = -EPERM;
2707                 goto out0;
2708         }
2709
2710         vdev->mtu = dev->mtu;
2711
2712         status = vxge_add_isr(vdev);
2713         if (status != VXGE_HW_OK) {
2714                 vxge_debug_init(VXGE_ERR,
2715                         "%s: fatal: ISR add failed", dev->name);
2716                 ret = -EPERM;
2717                 goto out1;
2718         }
2719
2720         if (vdev->config.intr_type != MSI_X) {
2721                 netif_napi_add_weight(dev, &vdev->napi, vxge_poll_inta,
2722                                       vdev->config.napi_weight);
2723                 napi_enable(&vdev->napi);
2724                 for (i = 0; i < vdev->no_of_vpath; i++) {
2725                         vpath = &vdev->vpaths[i];
2726                         vpath->ring.napi_p = &vdev->napi;
2727                 }
2728         } else {
2729                 for (i = 0; i < vdev->no_of_vpath; i++) {
2730                         vpath = &vdev->vpaths[i];
2731                         netif_napi_add_weight(dev, &vpath->ring.napi,
2732                                               vxge_poll_msix,
2733                                               vdev->config.napi_weight);
2734                         napi_enable(&vpath->ring.napi);
2735                         vpath->ring.napi_p = &vpath->ring.napi;
2736                 }
2737         }
2738
2739         /* configure RTH */
2740         if (vdev->config.rth_steering) {
2741                 status = vxge_rth_configure(vdev);
2742                 if (status != VXGE_HW_OK) {
2743                         vxge_debug_init(VXGE_ERR,
2744                                 "%s: fatal: RTH configuration failed",
2745                                 dev->name);
2746                         ret = -EPERM;
2747                         goto out2;
2748                 }
2749         }
2750         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2751                hldev->config.rth_en ? "enabled" : "disabled");
2752
2753         for (i = 0; i < vdev->no_of_vpath; i++) {
2754                 vpath = &vdev->vpaths[i];
2755
2756                 /* set initial mtu before enabling the device */
2757                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2758                 if (status != VXGE_HW_OK) {
2759                         vxge_debug_init(VXGE_ERR,
2760                                 "%s: fatal: can not set new MTU", dev->name);
2761                         ret = -EPERM;
2762                         goto out2;
2763                 }
2764         }
2765
2766         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2767         vxge_debug_init(vdev->level_trace,
2768                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2769         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2770
2771         /* Restore the DA, VID table and also multicast and promiscuous mode
2772          * states
2773          */
2774         if (vdev->all_multi_flg) {
2775                 for (i = 0; i < vdev->no_of_vpath; i++) {
2776                         vpath = &vdev->vpaths[i];
2777                         vxge_restore_vpath_mac_addr(vpath);
2778                         vxge_restore_vpath_vid_table(vpath);
2779
2780                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2781                         if (status != VXGE_HW_OK)
2782                                 vxge_debug_init(VXGE_ERR,
2783                                         "%s:%d Enabling multicast failed",
2784                                         __func__, __LINE__);
2785                 }
2786         }
2787
2788         /* Enable vpath to sniff all unicast/multicast traffic that not
2789          * addressed to them. We allow promiscuous mode for PF only
2790          */
2791
2792         val64 = 0;
2793         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2794                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2795
2796         vxge_hw_mgmt_reg_write(vdev->devh,
2797                 vxge_hw_mgmt_reg_type_mrpcim,
2798                 0,
2799                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2800                         rxmac_authorize_all_addr),
2801                 val64);
2802
2803         vxge_hw_mgmt_reg_write(vdev->devh,
2804                 vxge_hw_mgmt_reg_type_mrpcim,
2805                 0,
2806                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2807                         rxmac_authorize_all_vid),
2808                 val64);
2809
2810         vxge_set_multicast(dev);
2811
2812         /* Enabling Bcast and mcast for all vpath */
2813         for (i = 0; i < vdev->no_of_vpath; i++) {
2814                 vpath = &vdev->vpaths[i];
2815                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2816                 if (status != VXGE_HW_OK)
2817                         vxge_debug_init(VXGE_ERR,
2818                                 "%s : Can not enable bcast for vpath "
2819                                 "id %d", dev->name, i);
2820                 if (vdev->config.addr_learn_en) {
2821                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2822                         if (status != VXGE_HW_OK)
2823                                 vxge_debug_init(VXGE_ERR,
2824                                         "%s : Can not enable mcast for vpath "
2825                                         "id %d", dev->name, i);
2826                 }
2827         }
2828
2829         vxge_hw_device_setpause_data(vdev->devh, 0,
2830                 vdev->config.tx_pause_enable,
2831                 vdev->config.rx_pause_enable);
2832
2833         if (vdev->vp_reset_timer.function == NULL)
2834                 vxge_os_timer(&vdev->vp_reset_timer, vxge_poll_vp_reset,
2835                               HZ / 2);
2836
2837         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2838         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2839                 vxge_os_timer(&vdev->vp_lockup_timer, vxge_poll_vp_lockup,
2840                               HZ / 2);
2841
2842         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2843
2844         smp_wmb();
2845
2846         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2847                 netif_carrier_on(vdev->ndev);
2848                 netdev_notice(vdev->ndev, "Link Up\n");
2849                 vdev->stats.link_up++;
2850         }
2851
2852         vxge_hw_device_intr_enable(vdev->devh);
2853
2854         smp_wmb();
2855
2856         for (i = 0; i < vdev->no_of_vpath; i++) {
2857                 vpath = &vdev->vpaths[i];
2858
2859                 vxge_hw_vpath_enable(vpath->handle);
2860                 smp_wmb();
2861                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2862         }
2863
2864         netif_tx_start_all_queues(vdev->ndev);
2865
2866         /* configure CI */
2867         vxge_config_ci_for_tti_rti(vdev);
2868
2869         goto out0;
2870
2871 out2:
2872         vxge_rem_isr(vdev);
2873
2874         /* Disable napi */
2875         if (vdev->config.intr_type != MSI_X)
2876                 napi_disable(&vdev->napi);
2877         else {
2878                 for (i = 0; i < vdev->no_of_vpath; i++)
2879                         napi_disable(&vdev->vpaths[i].ring.napi);
2880         }
2881
2882 out1:
2883         vxge_close_vpaths(vdev, 0);
2884 out0:
2885         vxge_debug_entryexit(VXGE_TRACE,
2886                                 "%s: %s:%d  Exiting...",
2887                                 dev->name, __func__, __LINE__);
2888         return ret;
2889 }
2890
2891 /* Loop through the mac address list and delete all the entries */
2892 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2893 {
2894
2895         struct list_head *entry, *next;
2896         if (list_empty(&vpath->mac_addr_list))
2897                 return;
2898
2899         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2900                 list_del(entry);
2901                 kfree(entry);
2902         }
2903 }
2904
2905 static void vxge_napi_del_all(struct vxgedev *vdev)
2906 {
2907         int i;
2908         if (vdev->config.intr_type != MSI_X)
2909                 netif_napi_del(&vdev->napi);
2910         else {
2911                 for (i = 0; i < vdev->no_of_vpath; i++)
2912                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2913         }
2914 }
2915
2916 static int do_vxge_close(struct net_device *dev, int do_io)
2917 {
2918         enum vxge_hw_status status;
2919         struct vxgedev *vdev;
2920         struct __vxge_hw_device *hldev;
2921         int i;
2922         u64 val64, vpath_vector;
2923         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2924                 dev->name, __func__, __LINE__);
2925
2926         vdev = netdev_priv(dev);
2927         hldev = pci_get_drvdata(vdev->pdev);
2928
2929         if (unlikely(!is_vxge_card_up(vdev)))
2930                 return 0;
2931
2932         /* If vxge_handle_crit_err task is executing,
2933          * wait till it completes. */
2934         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2935                 msleep(50);
2936
2937         if (do_io) {
2938                 /* Put the vpath back in normal mode */
2939                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2940                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2941                                 vxge_hw_mgmt_reg_type_mrpcim,
2942                                 0,
2943                                 (ulong)offsetof(
2944                                         struct vxge_hw_mrpcim_reg,
2945                                         rts_mgr_cbasin_cfg),
2946                                 &val64);
2947                 if (status == VXGE_HW_OK) {
2948                         val64 &= ~vpath_vector;
2949                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2950                                         vxge_hw_mgmt_reg_type_mrpcim,
2951                                         0,
2952                                         (ulong)offsetof(
2953                                                 struct vxge_hw_mrpcim_reg,
2954                                                 rts_mgr_cbasin_cfg),
2955                                         val64);
2956                 }
2957
2958                 /* Remove the function 0 from promiscuous mode */
2959                 vxge_hw_mgmt_reg_write(vdev->devh,
2960                         vxge_hw_mgmt_reg_type_mrpcim,
2961                         0,
2962                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2963                                 rxmac_authorize_all_addr),
2964                         0);
2965
2966                 vxge_hw_mgmt_reg_write(vdev->devh,
2967                         vxge_hw_mgmt_reg_type_mrpcim,
2968                         0,
2969                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2970                                 rxmac_authorize_all_vid),
2971                         0);
2972
2973                 smp_wmb();
2974         }
2975
2976         if (vdev->titan1)
2977                 del_timer_sync(&vdev->vp_lockup_timer);
2978
2979         del_timer_sync(&vdev->vp_reset_timer);
2980
2981         if (do_io)
2982                 vxge_hw_device_wait_receive_idle(hldev);
2983
2984         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2985
2986         /* Disable napi */
2987         if (vdev->config.intr_type != MSI_X)
2988                 napi_disable(&vdev->napi);
2989         else {
2990                 for (i = 0; i < vdev->no_of_vpath; i++)
2991                         napi_disable(&vdev->vpaths[i].ring.napi);
2992         }
2993
2994         netif_carrier_off(vdev->ndev);
2995         netdev_notice(vdev->ndev, "Link Down\n");
2996         netif_tx_stop_all_queues(vdev->ndev);
2997
2998         /* Note that at this point xmit() is stopped by upper layer */
2999         if (do_io)
3000                 vxge_hw_device_intr_disable(vdev->devh);
3001
3002         vxge_rem_isr(vdev);
3003
3004         vxge_napi_del_all(vdev);
3005
3006         if (do_io)
3007                 vxge_reset_all_vpaths(vdev);
3008
3009         vxge_close_vpaths(vdev, 0);
3010
3011         vxge_debug_entryexit(VXGE_TRACE,
3012                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
3013
3014         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
3015
3016         return 0;
3017 }
3018
3019 /**
3020  * vxge_close
3021  * @dev: device pointer.
3022  *
3023  * This is the stop entry point of the driver. It needs to undo exactly
3024  * whatever was done by the open entry point, thus it's usually referred to
3025  * as the close function.Among other things this function mainly stops the
3026  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3027  * Return value: '0' on success and an appropriate (-)ve integer as
3028  * defined in errno.h file on failure.
3029  */
3030 static int vxge_close(struct net_device *dev)
3031 {
3032         do_vxge_close(dev, 1);
3033         return 0;
3034 }
3035
3036 /**
3037  * vxge_change_mtu
3038  * @dev: net device pointer.
3039  * @new_mtu :the new MTU size for the device.
3040  *
3041  * A driver entry point to change MTU size for the device. Before changing
3042  * the MTU the device must be stopped.
3043  */
3044 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3045 {
3046         struct vxgedev *vdev = netdev_priv(dev);
3047
3048         vxge_debug_entryexit(vdev->level_trace,
3049                 "%s:%d", __func__, __LINE__);
3050
3051         /* check if device is down already */
3052         if (unlikely(!is_vxge_card_up(vdev))) {
3053                 /* just store new value, will use later on open() */
3054                 dev->mtu = new_mtu;
3055                 vxge_debug_init(vdev->level_err,
3056                         "%s", "device is down on MTU change");
3057                 return 0;
3058         }
3059
3060         vxge_debug_init(vdev->level_trace,
3061                 "trying to apply new MTU %d", new_mtu);
3062
3063         if (vxge_close(dev))
3064                 return -EIO;
3065
3066         dev->mtu = new_mtu;
3067         vdev->mtu = new_mtu;
3068
3069         if (vxge_open(dev))
3070                 return -EIO;
3071
3072         vxge_debug_init(vdev->level_trace,
3073                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3074
3075         vxge_debug_entryexit(vdev->level_trace,
3076                 "%s:%d  Exiting...", __func__, __LINE__);
3077
3078         return 0;
3079 }
3080
3081 /**
3082  * vxge_get_stats64
3083  * @dev: pointer to the device structure
3084  * @net_stats: pointer to struct rtnl_link_stats64
3085  *
3086  */
3087 static void
3088 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
3089 {
3090         struct vxgedev *vdev = netdev_priv(dev);
3091         int k;
3092
3093         /* net_stats already zeroed by caller */
3094         for (k = 0; k < vdev->no_of_vpath; k++) {
3095                 struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats;
3096                 struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats;
3097                 unsigned int start;
3098                 u64 packets, bytes, multicast;
3099
3100                 do {
3101                         start = u64_stats_fetch_begin_irq(&rxstats->syncp);
3102
3103                         packets   = rxstats->rx_frms;
3104                         multicast = rxstats->rx_mcast;
3105                         bytes     = rxstats->rx_bytes;
3106                 } while (u64_stats_fetch_retry_irq(&rxstats->syncp, start));
3107
3108                 net_stats->rx_packets += packets;
3109                 net_stats->rx_bytes += bytes;
3110                 net_stats->multicast += multicast;
3111
3112                 net_stats->rx_errors += rxstats->rx_errors;
3113                 net_stats->rx_dropped += rxstats->rx_dropped;
3114
3115                 do {
3116                         start = u64_stats_fetch_begin_irq(&txstats->syncp);
3117
3118                         packets = txstats->tx_frms;
3119                         bytes   = txstats->tx_bytes;
3120                 } while (u64_stats_fetch_retry_irq(&txstats->syncp, start));
3121
3122                 net_stats->tx_packets += packets;
3123                 net_stats->tx_bytes += bytes;
3124                 net_stats->tx_errors += txstats->tx_errors;
3125         }
3126 }
3127
3128 static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
3129 {
3130         enum vxge_hw_status status;
3131         u64 val64;
3132
3133         /* Timestamp is passed to the driver via the FCS, therefore we
3134          * must disable the FCS stripping by the adapter.  Since this is
3135          * required for the driver to load (due to a hardware bug),
3136          * there is no need to do anything special here.
3137          */
3138         val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3139                 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3140                 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3141
3142         status = vxge_hw_mgmt_reg_write(devh,
3143                                         vxge_hw_mgmt_reg_type_mrpcim,
3144                                         0,
3145                                         offsetof(struct vxge_hw_mrpcim_reg,
3146                                                  xmac_timestamp),
3147                                         val64);
3148         vxge_hw_device_flush_io(devh);
3149         devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
3150         return status;
3151 }
3152
3153 static int vxge_hwtstamp_set(struct vxgedev *vdev, void __user *data)
3154 {
3155         struct hwtstamp_config config;
3156         int i;
3157
3158         if (copy_from_user(&config, data, sizeof(config)))
3159                 return -EFAULT;
3160
3161         /* Transmit HW Timestamp not supported */
3162         switch (config.tx_type) {
3163         case HWTSTAMP_TX_OFF:
3164                 break;
3165         case HWTSTAMP_TX_ON:
3166         default:
3167                 return -ERANGE;
3168         }
3169
3170         switch (config.rx_filter) {
3171         case HWTSTAMP_FILTER_NONE:
3172                 vdev->rx_hwts = 0;
3173                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3174                 break;
3175
3176         case HWTSTAMP_FILTER_ALL:
3177         case HWTSTAMP_FILTER_SOME:
3178         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3179         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3180         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3181         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3182         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3183         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3184         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3185         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3186         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3187         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3188         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3189         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3190         case HWTSTAMP_FILTER_NTP_ALL:
3191                 if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
3192                         return -EFAULT;
3193
3194                 vdev->rx_hwts = 1;
3195                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3196                 break;
3197
3198         default:
3199                  return -ERANGE;
3200         }
3201
3202         for (i = 0; i < vdev->no_of_vpath; i++)
3203                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3204
3205         if (copy_to_user(data, &config, sizeof(config)))
3206                 return -EFAULT;
3207
3208         return 0;
3209 }
3210
3211 static int vxge_hwtstamp_get(struct vxgedev *vdev, void __user *data)
3212 {
3213         struct hwtstamp_config config;
3214
3215         config.flags = 0;
3216         config.tx_type = HWTSTAMP_TX_OFF;
3217         config.rx_filter = (vdev->rx_hwts ?
3218                             HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE);
3219
3220         if (copy_to_user(data, &config, sizeof(config)))
3221                 return -EFAULT;
3222
3223         return 0;
3224 }
3225
3226 /**
3227  * vxge_ioctl
3228  * @dev: Device pointer.
3229  * @rq: An IOCTL specific structure, that can contain a pointer to
3230  *       a proprietary structure used to pass information to the driver.
3231  * @cmd: This is used to distinguish between the different commands that
3232  *       can be passed to the IOCTL functions.
3233  *
3234  * Entry point for the Ioctl.
3235  */
3236 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3237 {
3238         struct vxgedev *vdev = netdev_priv(dev);
3239
3240         switch (cmd) {
3241         case SIOCSHWTSTAMP:
3242                 return vxge_hwtstamp_set(vdev, rq->ifr_data);
3243         case SIOCGHWTSTAMP:
3244                 return vxge_hwtstamp_get(vdev, rq->ifr_data);
3245         default:
3246                 return -EOPNOTSUPP;
3247         }
3248 }
3249
3250 /**
3251  * vxge_tx_watchdog
3252  * @dev: pointer to net device structure
3253  * @txqueue: index of the hanging queue
3254  *
3255  * Watchdog for transmit side.
3256  * This function is triggered if the Tx Queue is stopped
3257  * for a pre-defined amount of time when the Interface is still up.
3258  */
3259 static void vxge_tx_watchdog(struct net_device *dev, unsigned int txqueue)
3260 {
3261         struct vxgedev *vdev;
3262
3263         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3264
3265         vdev = netdev_priv(dev);
3266
3267         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3268
3269         schedule_work(&vdev->reset_task);
3270         vxge_debug_entryexit(VXGE_TRACE,
3271                 "%s:%d  Exiting...", __func__, __LINE__);
3272 }
3273
3274 /**
3275  * vxge_vlan_rx_add_vid
3276  * @dev: net device pointer.
3277  * @proto: vlan protocol
3278  * @vid: vid
3279  *
3280  * Add the vlan id to the devices vlan id table
3281  */
3282 static int
3283 vxge_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
3284 {
3285         struct vxgedev *vdev = netdev_priv(dev);
3286         struct vxge_vpath *vpath;
3287         int vp_id;
3288
3289         /* Add these vlan to the vid table */
3290         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3291                 vpath = &vdev->vpaths[vp_id];
3292                 if (!vpath->is_open)
3293                         continue;
3294                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3295         }
3296         set_bit(vid, vdev->active_vlans);
3297         return 0;
3298 }
3299
3300 /**
3301  * vxge_vlan_rx_kill_vid
3302  * @dev: net device pointer.
3303  * @proto: vlan protocol
3304  * @vid: vid
3305  *
3306  * Remove the vlan id from the device's vlan id table
3307  */
3308 static int
3309 vxge_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
3310 {
3311         struct vxgedev *vdev = netdev_priv(dev);
3312         struct vxge_vpath *vpath;
3313         int vp_id;
3314
3315         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3316
3317         /* Delete this vlan from the vid table */
3318         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3319                 vpath = &vdev->vpaths[vp_id];
3320                 if (!vpath->is_open)
3321                         continue;
3322                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3323         }
3324         vxge_debug_entryexit(VXGE_TRACE,
3325                 "%s:%d  Exiting...", __func__, __LINE__);
3326         clear_bit(vid, vdev->active_vlans);
3327         return 0;
3328 }
3329
3330 static const struct net_device_ops vxge_netdev_ops = {
3331         .ndo_open               = vxge_open,
3332         .ndo_stop               = vxge_close,
3333         .ndo_get_stats64        = vxge_get_stats64,
3334         .ndo_start_xmit         = vxge_xmit,
3335         .ndo_validate_addr      = eth_validate_addr,
3336         .ndo_set_rx_mode        = vxge_set_multicast,
3337         .ndo_eth_ioctl           = vxge_ioctl,
3338         .ndo_set_mac_address    = vxge_set_mac_addr,
3339         .ndo_change_mtu         = vxge_change_mtu,
3340         .ndo_fix_features       = vxge_fix_features,
3341         .ndo_set_features       = vxge_set_features,
3342         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3343         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3344         .ndo_tx_timeout         = vxge_tx_watchdog,
3345 #ifdef CONFIG_NET_POLL_CONTROLLER
3346         .ndo_poll_controller    = vxge_netpoll,
3347 #endif
3348 };
3349
3350 static int vxge_device_register(struct __vxge_hw_device *hldev,
3351                                 struct vxge_config *config,
3352                                 int no_of_vpath, struct vxgedev **vdev_out)
3353 {
3354         struct net_device *ndev;
3355         enum vxge_hw_status status = VXGE_HW_OK;
3356         struct vxgedev *vdev;
3357         int ret = 0, no_of_queue = 1;
3358         u64 stat;
3359
3360         *vdev_out = NULL;
3361         if (config->tx_steering_type)
3362                 no_of_queue = no_of_vpath;
3363
3364         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3365                         no_of_queue);
3366         if (ndev == NULL) {
3367                 vxge_debug_init(
3368                         vxge_hw_device_trace_level_get(hldev),
3369                 "%s : device allocation failed", __func__);
3370                 ret = -ENODEV;
3371                 goto _out0;
3372         }
3373
3374         vxge_debug_entryexit(
3375                 vxge_hw_device_trace_level_get(hldev),
3376                 "%s: %s:%d  Entering...",
3377                 ndev->name, __func__, __LINE__);
3378
3379         vdev = netdev_priv(ndev);
3380         memset(vdev, 0, sizeof(struct vxgedev));
3381
3382         vdev->ndev = ndev;
3383         vdev->devh = hldev;
3384         vdev->pdev = hldev->pdev;
3385         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3386         vdev->rx_hwts = 0;
3387         vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION);
3388
3389         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3390
3391         ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG |
3392                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3393                 NETIF_F_TSO | NETIF_F_TSO6 |
3394                 NETIF_F_HW_VLAN_CTAG_TX;
3395         if (vdev->config.rth_steering != NO_STEERING)
3396                 ndev->hw_features |= NETIF_F_RXHASH;
3397
3398         ndev->features |= ndev->hw_features |
3399                 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
3400
3401
3402         ndev->netdev_ops = &vxge_netdev_ops;
3403
3404         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3405         INIT_WORK(&vdev->reset_task, vxge_reset);
3406
3407         vxge_initialize_ethtool_ops(ndev);
3408
3409         /* Allocate memory for vpath */
3410         vdev->vpaths = kcalloc(no_of_vpath, sizeof(struct vxge_vpath),
3411                                GFP_KERNEL);
3412         if (!vdev->vpaths) {
3413                 vxge_debug_init(VXGE_ERR,
3414                         "%s: vpath memory allocation failed",
3415                         vdev->ndev->name);
3416                 ret = -ENOMEM;
3417                 goto _out1;
3418         }
3419
3420         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3421                 "%s : checksumming enabled", __func__);
3422
3423         ndev->features |= NETIF_F_HIGHDMA;
3424
3425         /* MTU range: 68 - 9600 */
3426         ndev->min_mtu = VXGE_HW_MIN_MTU;
3427         ndev->max_mtu = VXGE_HW_MAX_MTU;
3428
3429         ret = register_netdev(ndev);
3430         if (ret) {
3431                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3432                         "%s: %s : device registration failed!",
3433                         ndev->name, __func__);
3434                 goto _out2;
3435         }
3436
3437         /*  Set the factory defined MAC address initially */
3438         ndev->addr_len = ETH_ALEN;
3439
3440         /* Make Link state as off at this point, when the Link change
3441          * interrupt comes the state will be automatically changed to
3442          * the right state.
3443          */
3444         netif_carrier_off(ndev);
3445
3446         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3447                 "%s: Ethernet device registered",
3448                 ndev->name);
3449
3450         hldev->ndev = ndev;
3451         *vdev_out = vdev;
3452
3453         /* Resetting the Device stats */
3454         status = vxge_hw_mrpcim_stats_access(
3455                                 hldev,
3456                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3457                                 0,
3458                                 0,
3459                                 &stat);
3460
3461         if (status == VXGE_HW_ERR_PRIVILEGED_OPERATION)
3462                 vxge_debug_init(
3463                         vxge_hw_device_trace_level_get(hldev),
3464                         "%s: device stats clear returns"
3465                         "VXGE_HW_ERR_PRIVILEGED_OPERATION", ndev->name);
3466
3467         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3468                 "%s: %s:%d  Exiting...",
3469                 ndev->name, __func__, __LINE__);
3470
3471         return ret;
3472 _out2:
3473         kfree(vdev->vpaths);
3474 _out1:
3475         free_netdev(ndev);
3476 _out0:
3477         return ret;
3478 }
3479
3480 /*
3481  * vxge_device_unregister
3482  *
3483  * This function will unregister and free network device
3484  */
3485 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3486 {
3487         struct vxgedev *vdev;
3488         struct net_device *dev;
3489         char buf[IFNAMSIZ];
3490
3491         dev = hldev->ndev;
3492         vdev = netdev_priv(dev);
3493
3494         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3495                              __func__, __LINE__);
3496
3497         strlcpy(buf, dev->name, IFNAMSIZ);
3498
3499         flush_work(&vdev->reset_task);
3500
3501         /* in 2.6 will call stop() if device is up */
3502         unregister_netdev(dev);
3503
3504         kfree(vdev->vpaths);
3505
3506         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3507                         buf);
3508         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3509                              __func__, __LINE__);
3510
3511         /* we are safe to free it now */
3512         free_netdev(dev);
3513 }
3514
3515 /*
3516  * vxge_callback_crit_err
3517  *
3518  * This function is called by the alarm handler in interrupt context.
3519  * Driver must analyze it based on the event type.
3520  */
3521 static void
3522 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3523                         enum vxge_hw_event type, u64 vp_id)
3524 {
3525         struct net_device *dev = hldev->ndev;
3526         struct vxgedev *vdev = netdev_priv(dev);
3527         struct vxge_vpath *vpath = NULL;
3528         int vpath_idx;
3529
3530         vxge_debug_entryexit(vdev->level_trace,
3531                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3532
3533         /* Note: This event type should be used for device wide
3534          * indications only - Serious errors, Slot freeze and critical errors
3535          */
3536         vdev->cric_err_event = type;
3537
3538         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3539                 vpath = &vdev->vpaths[vpath_idx];
3540                 if (vpath->device_id == vp_id)
3541                         break;
3542         }
3543
3544         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3545                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3546                         vxge_debug_init(VXGE_ERR,
3547                                 "%s: Slot is frozen", vdev->ndev->name);
3548                 } else if (type == VXGE_HW_EVENT_SERR) {
3549                         vxge_debug_init(VXGE_ERR,
3550                                 "%s: Encountered Serious Error",
3551                                 vdev->ndev->name);
3552                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3553                         vxge_debug_init(VXGE_ERR,
3554                                 "%s: Encountered Critical Error",
3555                                 vdev->ndev->name);
3556         }
3557
3558         if ((type == VXGE_HW_EVENT_SERR) ||
3559                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3560                 if (unlikely(vdev->exec_mode))
3561                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3562         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3563                 vxge_hw_device_mask_all(hldev);
3564                 if (unlikely(vdev->exec_mode))
3565                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3566         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3567                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3568
3569                 if (unlikely(vdev->exec_mode))
3570                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3571                 else {
3572                         /* check if this vpath is already set for reset */
3573                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3574
3575                                 /* disable interrupts for this vpath */
3576                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3577
3578                                 /* stop the queue for this vpath */
3579                                 netif_tx_stop_queue(vpath->fifo.txq);
3580                         }
3581                 }
3582         }
3583
3584         vxge_debug_entryexit(vdev->level_trace,
3585                 "%s: %s:%d  Exiting...",
3586                 vdev->ndev->name, __func__, __LINE__);
3587 }
3588
3589 static void verify_bandwidth(void)
3590 {
3591         int i, band_width, total = 0, equal_priority = 0;
3592
3593         /* 1. If user enters 0 for some fifo, give equal priority to all */
3594         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3595                 if (bw_percentage[i] == 0) {
3596                         equal_priority = 1;
3597                         break;
3598                 }
3599         }
3600
3601         if (!equal_priority) {
3602                 /* 2. If sum exceeds 100, give equal priority to all */
3603                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3604                         if (bw_percentage[i] == 0xFF)
3605                                 break;
3606
3607                         total += bw_percentage[i];
3608                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3609                                 equal_priority = 1;
3610                                 break;
3611                         }
3612                 }
3613         }
3614
3615         if (!equal_priority) {
3616                 /* Is all the bandwidth consumed? */
3617                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3618                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3619                                 /* Split rest of bw equally among next VPs*/
3620                                 band_width =
3621                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3622                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3623                                 if (band_width < 2) /* min of 2% */
3624                                         equal_priority = 1;
3625                                 else {
3626                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3627                                                 i++)
3628                                                 bw_percentage[i] =
3629                                                         band_width;
3630                                 }
3631                         }
3632                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3633                         equal_priority = 1;
3634         }
3635
3636         if (equal_priority) {
3637                 vxge_debug_init(VXGE_ERR,
3638                         "%s: Assigning equal bandwidth to all the vpaths",
3639                         VXGE_DRIVER_NAME);
3640                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3641                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3642                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3643                         bw_percentage[i] = bw_percentage[0];
3644         }
3645 }
3646
3647 /*
3648  * Vpath configuration
3649  */
3650 static int vxge_config_vpaths(struct vxge_hw_device_config *device_config,
3651                               u64 vpath_mask, struct vxge_config *config_param)
3652 {
3653         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3654         u32 txdl_size, txdl_per_memblock;
3655
3656         temp = driver_config->vpath_per_dev;
3657         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3658                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3659                 /* No more CPU. Return vpath number as zero.*/
3660                 if (driver_config->g_no_cpus == -1)
3661                         return 0;
3662
3663                 if (!driver_config->g_no_cpus)
3664                         driver_config->g_no_cpus =
3665                                 netif_get_num_default_rss_queues();
3666
3667                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3668                 if (!driver_config->vpath_per_dev)
3669                         driver_config->vpath_per_dev = 1;
3670
3671                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3672                         if (vxge_bVALn(vpath_mask, i, 1))
3673                                 default_no_vpath++;
3674
3675                 if (default_no_vpath < driver_config->vpath_per_dev)
3676                         driver_config->vpath_per_dev = default_no_vpath;
3677
3678                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3679                                 (driver_config->vpath_per_dev * 2);
3680                 if (driver_config->g_no_cpus <= 0)
3681                         driver_config->g_no_cpus = -1;
3682         }
3683
3684         if (driver_config->vpath_per_dev == 1) {
3685                 vxge_debug_ll_config(VXGE_TRACE,
3686                         "%s: Disable tx and rx steering, "
3687                         "as single vpath is configured", VXGE_DRIVER_NAME);
3688                 config_param->rth_steering = NO_STEERING;
3689                 config_param->tx_steering_type = NO_STEERING;
3690                 device_config->rth_en = 0;
3691         }
3692
3693         /* configure bandwidth */
3694         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3695                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3696
3697         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3698                 device_config->vp_config[i].vp_id = i;
3699                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3700                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3701                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3702                                 vxge_debug_ll_config(VXGE_TRACE,
3703                                         "%s: vpath: %d is not available",
3704                                         VXGE_DRIVER_NAME, i);
3705                                 continue;
3706                         } else {
3707                                 vxge_debug_ll_config(VXGE_TRACE,
3708                                         "%s: vpath: %d available",
3709                                         VXGE_DRIVER_NAME, i);
3710                                 no_of_vpaths++;
3711                         }
3712                 } else {
3713                         vxge_debug_ll_config(VXGE_TRACE,
3714                                 "%s: vpath: %d is not configured, "
3715                                 "max_config_vpath exceeded",
3716                                 VXGE_DRIVER_NAME, i);
3717                         break;
3718                 }
3719
3720                 /* Configure Tx fifo's */
3721                 device_config->vp_config[i].fifo.enable =
3722                                                 VXGE_HW_FIFO_ENABLE;
3723                 device_config->vp_config[i].fifo.max_frags =
3724                                 MAX_SKB_FRAGS + 1;
3725                 device_config->vp_config[i].fifo.memblock_size =
3726                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3727
3728                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3729                                 sizeof(struct vxge_hw_fifo_txd);
3730                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3731
3732                 device_config->vp_config[i].fifo.fifo_blocks =
3733                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3734
3735                 device_config->vp_config[i].fifo.intr =
3736                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3737
3738                 /* Configure tti properties */
3739                 device_config->vp_config[i].tti.intr_enable =
3740                                         VXGE_HW_TIM_INTR_ENABLE;
3741
3742                 device_config->vp_config[i].tti.btimer_val =
3743                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3744
3745                 device_config->vp_config[i].tti.timer_ac_en =
3746                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3747
3748                 /* For msi-x with napi (each vector has a handler of its own) -
3749                  * Set CI to OFF for all vpaths
3750                  */
3751                 device_config->vp_config[i].tti.timer_ci_en =
3752                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3753
3754                 device_config->vp_config[i].tti.timer_ri_en =
3755                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3756
3757                 device_config->vp_config[i].tti.util_sel =
3758                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3759
3760                 device_config->vp_config[i].tti.ltimer_val =
3761                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3762
3763                 device_config->vp_config[i].tti.rtimer_val =
3764                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3765
3766                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3767                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3768                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3769                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3770                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3771                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3772                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3773
3774                 /* Configure Rx rings */
3775                 device_config->vp_config[i].ring.enable  =
3776                                                 VXGE_HW_RING_ENABLE;
3777
3778                 device_config->vp_config[i].ring.ring_blocks  =
3779                                                 VXGE_HW_DEF_RING_BLOCKS;
3780
3781                 device_config->vp_config[i].ring.buffer_mode =
3782                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3783
3784                 device_config->vp_config[i].ring.rxds_limit  =
3785                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3786
3787                 device_config->vp_config[i].ring.scatter_mode =
3788                                         VXGE_HW_RING_SCATTER_MODE_A;
3789
3790                 /* Configure rti properties */
3791                 device_config->vp_config[i].rti.intr_enable =
3792                                         VXGE_HW_TIM_INTR_ENABLE;
3793
3794                 device_config->vp_config[i].rti.btimer_val =
3795                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3796
3797                 device_config->vp_config[i].rti.timer_ac_en =
3798                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3799
3800                 device_config->vp_config[i].rti.timer_ci_en =
3801                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3802
3803                 device_config->vp_config[i].rti.timer_ri_en =
3804                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3805
3806                 device_config->vp_config[i].rti.util_sel =
3807                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3808
3809                 device_config->vp_config[i].rti.urange_a =
3810                                                 RTI_RX_URANGE_A;
3811                 device_config->vp_config[i].rti.urange_b =
3812                                                 RTI_RX_URANGE_B;
3813                 device_config->vp_config[i].rti.urange_c =
3814                                                 RTI_RX_URANGE_C;
3815                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3816                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3817                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3818                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3819
3820                 device_config->vp_config[i].rti.rtimer_val =
3821                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3822
3823                 device_config->vp_config[i].rti.ltimer_val =
3824                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3825
3826                 device_config->vp_config[i].rpa_strip_vlan_tag =
3827                         vlan_tag_strip;
3828         }
3829
3830         driver_config->vpath_per_dev = temp;
3831         return no_of_vpaths;
3832 }
3833
3834 /* initialize device configuratrions */
3835 static void vxge_device_config_init(struct vxge_hw_device_config *device_config,
3836                                     int *intr_type)
3837 {
3838         /* Used for CQRQ/SRQ. */
3839         device_config->dma_blockpool_initial =
3840                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3841
3842         device_config->dma_blockpool_max =
3843                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3844
3845         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3846                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3847
3848         if (!IS_ENABLED(CONFIG_PCI_MSI)) {
3849                 vxge_debug_init(VXGE_ERR,
3850                         "%s: This Kernel does not support "
3851                         "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3852                 *intr_type = INTA;
3853         }
3854
3855         /* Configure whether MSI-X or IRQL. */
3856         switch (*intr_type) {
3857         case INTA:
3858                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3859                 break;
3860
3861         case MSI_X:
3862                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT;
3863                 break;
3864         }
3865
3866         /* Timer period between device poll */
3867         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3868
3869         /* Configure mac based steering. */
3870         device_config->rts_mac_en = addr_learn_en;
3871
3872         /* Configure Vpaths */
3873         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3874
3875         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3876                         __func__);
3877         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3878                         device_config->intr_mode);
3879         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3880                         device_config->device_poll_millis);
3881         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3882                         device_config->rth_en);
3883         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3884                         device_config->rth_it_type);
3885 }
3886
3887 static void vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3888 {
3889         int i;
3890
3891         vxge_debug_init(VXGE_TRACE,
3892                 "%s: %d Vpath(s) opened",
3893                 vdev->ndev->name, vdev->no_of_vpath);
3894
3895         switch (vdev->config.intr_type) {
3896         case INTA:
3897                 vxge_debug_init(VXGE_TRACE,
3898                         "%s: Interrupt type INTA", vdev->ndev->name);
3899                 break;
3900
3901         case MSI_X:
3902                 vxge_debug_init(VXGE_TRACE,
3903                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3904                 break;
3905         }
3906
3907         if (vdev->config.rth_steering) {
3908                 vxge_debug_init(VXGE_TRACE,
3909                         "%s: RTH steering enabled for TCP_IPV4",
3910                         vdev->ndev->name);
3911         } else {
3912                 vxge_debug_init(VXGE_TRACE,
3913                         "%s: RTH steering disabled", vdev->ndev->name);
3914         }
3915
3916         switch (vdev->config.tx_steering_type) {
3917         case NO_STEERING:
3918                 vxge_debug_init(VXGE_TRACE,
3919                         "%s: Tx steering disabled", vdev->ndev->name);
3920                 break;
3921         case TX_PRIORITY_STEERING:
3922                 vxge_debug_init(VXGE_TRACE,
3923                         "%s: Unsupported tx steering option",
3924                         vdev->ndev->name);
3925                 vxge_debug_init(VXGE_TRACE,
3926                         "%s: Tx steering disabled", vdev->ndev->name);
3927                 vdev->config.tx_steering_type = 0;
3928                 break;
3929         case TX_VLAN_STEERING:
3930                 vxge_debug_init(VXGE_TRACE,
3931                         "%s: Unsupported tx steering option",
3932                         vdev->ndev->name);
3933                 vxge_debug_init(VXGE_TRACE,
3934                         "%s: Tx steering disabled", vdev->ndev->name);
3935                 vdev->config.tx_steering_type = 0;
3936                 break;
3937         case TX_MULTIQ_STEERING:
3938                 vxge_debug_init(VXGE_TRACE,
3939                         "%s: Tx multiqueue steering enabled",
3940                         vdev->ndev->name);
3941                 break;
3942         case TX_PORT_STEERING:
3943                 vxge_debug_init(VXGE_TRACE,
3944                         "%s: Tx port steering enabled",
3945                         vdev->ndev->name);
3946                 break;
3947         default:
3948                 vxge_debug_init(VXGE_ERR,
3949                         "%s: Unsupported tx steering type",
3950                         vdev->ndev->name);
3951                 vxge_debug_init(VXGE_TRACE,
3952                         "%s: Tx steering disabled", vdev->ndev->name);
3953                 vdev->config.tx_steering_type = 0;
3954         }
3955
3956         if (vdev->config.addr_learn_en)
3957                 vxge_debug_init(VXGE_TRACE,
3958                         "%s: MAC Address learning enabled", vdev->ndev->name);
3959
3960         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3961                 if (!vxge_bVALn(vpath_mask, i, 1))
3962                         continue;
3963                 vxge_debug_ll_config(VXGE_TRACE,
3964                         "%s: MTU size - %d", vdev->ndev->name,
3965                         ((vdev->devh))->
3966                                 config.vp_config[i].mtu);
3967                 vxge_debug_init(VXGE_TRACE,
3968                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3969                         ((vdev->devh))->
3970                                 config.vp_config[i].rpa_strip_vlan_tag
3971                         ? "Enabled" : "Disabled");
3972                 vxge_debug_ll_config(VXGE_TRACE,
3973                         "%s: Max frags : %d", vdev->ndev->name,
3974                         ((vdev->devh))->
3975                                 config.vp_config[i].fifo.max_frags);
3976                 break;
3977         }
3978 }
3979
3980 /**
3981  * vxge_pm_suspend - vxge power management suspend entry point
3982  * @dev_d: device pointer
3983  *
3984  */
3985 static int __maybe_unused vxge_pm_suspend(struct device *dev_d)
3986 {
3987         return -ENOSYS;
3988 }
3989 /**
3990  * vxge_pm_resume - vxge power management resume entry point
3991  * @dev_d: device pointer
3992  *
3993  */
3994 static int __maybe_unused vxge_pm_resume(struct device *dev_d)
3995 {
3996         return -ENOSYS;
3997 }
3998
3999 /**
4000  * vxge_io_error_detected - called when PCI error is detected
4001  * @pdev: Pointer to PCI device
4002  * @state: The current pci connection state
4003  *
4004  * This function is called after a PCI bus error affecting
4005  * this device has been detected.
4006  */
4007 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
4008                                                 pci_channel_state_t state)
4009 {
4010         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4011         struct net_device *netdev = hldev->ndev;
4012
4013         netif_device_detach(netdev);
4014
4015         if (state == pci_channel_io_perm_failure)
4016                 return PCI_ERS_RESULT_DISCONNECT;
4017
4018         if (netif_running(netdev)) {
4019                 /* Bring down the card, while avoiding PCI I/O */
4020                 do_vxge_close(netdev, 0);
4021         }
4022
4023         pci_disable_device(pdev);
4024
4025         return PCI_ERS_RESULT_NEED_RESET;
4026 }
4027
4028 /**
4029  * vxge_io_slot_reset - called after the pci bus has been reset.
4030  * @pdev: Pointer to PCI device
4031  *
4032  * Restart the card from scratch, as if from a cold-boot.
4033  * At this point, the card has exprienced a hard reset,
4034  * followed by fixups by BIOS, and has its config space
4035  * set up identically to what it was at cold boot.
4036  */
4037 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
4038 {
4039         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4040         struct net_device *netdev = hldev->ndev;
4041
4042         struct vxgedev *vdev = netdev_priv(netdev);
4043
4044         if (pci_enable_device(pdev)) {
4045                 netdev_err(netdev, "Cannot re-enable device after reset\n");
4046                 return PCI_ERS_RESULT_DISCONNECT;
4047         }
4048
4049         pci_set_master(pdev);
4050         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4051
4052         return PCI_ERS_RESULT_RECOVERED;
4053 }
4054
4055 /**
4056  * vxge_io_resume - called when traffic can start flowing again.
4057  * @pdev: Pointer to PCI device
4058  *
4059  * This callback is called when the error recovery driver tells
4060  * us that its OK to resume normal operation.
4061  */
4062 static void vxge_io_resume(struct pci_dev *pdev)
4063 {
4064         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4065         struct net_device *netdev = hldev->ndev;
4066
4067         if (netif_running(netdev)) {
4068                 if (vxge_open(netdev)) {
4069                         netdev_err(netdev,
4070                                    "Can't bring device back up after reset\n");
4071                         return;
4072                 }
4073         }
4074
4075         netif_device_attach(netdev);
4076 }
4077
4078 static inline u32 vxge_get_num_vfs(u64 function_mode)
4079 {
4080         u32 num_functions = 0;
4081
4082         switch (function_mode) {
4083         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4084         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4085                 num_functions = 8;
4086                 break;
4087         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4088                 num_functions = 1;
4089                 break;
4090         case VXGE_HW_FUNCTION_MODE_SRIOV:
4091         case VXGE_HW_FUNCTION_MODE_MRIOV:
4092         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4093                 num_functions = 17;
4094                 break;
4095         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4096                 num_functions = 4;
4097                 break;
4098         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4099                 num_functions = 2;
4100                 break;
4101         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4102                 num_functions = 8; /* TODO */
4103                 break;
4104         }
4105         return num_functions;
4106 }
4107
4108 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4109 {
4110         struct __vxge_hw_device *hldev = vdev->devh;
4111         u32 maj, min, bld, cmaj, cmin, cbld;
4112         enum vxge_hw_status status;
4113         const struct firmware *fw;
4114         int ret;
4115
4116         ret = reject_firmware(&fw, fw_name, &vdev->pdev->dev);
4117         if (ret) {
4118                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4119                                 VXGE_DRIVER_NAME, fw_name);
4120                 goto out;
4121         }
4122
4123         /* Load the new firmware onto the adapter */
4124         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4125         if (status != VXGE_HW_OK) {
4126                 vxge_debug_init(VXGE_ERR,
4127                                 "%s: FW image download to adapter failed '%s'.",
4128                                 VXGE_DRIVER_NAME, fw_name);
4129                 ret = -EIO;
4130                 goto out;
4131         }
4132
4133         /* Read the version of the new firmware */
4134         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4135         if (status != VXGE_HW_OK) {
4136                 vxge_debug_init(VXGE_ERR,
4137                                 "%s: Upgrade read version failed '%s'.",
4138                                 VXGE_DRIVER_NAME, fw_name);
4139                 ret = -EIO;
4140                 goto out;
4141         }
4142
4143         cmaj = vdev->config.device_hw_info.fw_version.major;
4144         cmin = vdev->config.device_hw_info.fw_version.minor;
4145         cbld = vdev->config.device_hw_info.fw_version.build;
4146         /* It's possible the version in /lib/firmware is not the latest version.
4147          * If so, we could get into a loop of trying to upgrade to the latest
4148          * and flashing the older version.
4149          */
4150         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4151             !override) {
4152                 ret = -EINVAL;
4153                 goto out;
4154         }
4155
4156         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4157                maj, min, bld);
4158
4159         /* Flash the adapter with the new firmware */
4160         status = vxge_hw_flash_fw(hldev);
4161         if (status != VXGE_HW_OK) {
4162                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4163                                 VXGE_DRIVER_NAME, fw_name);
4164                 ret = -EIO;
4165                 goto out;
4166         }
4167
4168         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4169                "hard reset before using, thus requiring a system reboot or a "
4170                "hotplug event.\n");
4171
4172 out:
4173         release_firmware(fw);
4174         return ret;
4175 }
4176
4177 static int vxge_probe_fw_update(struct vxgedev *vdev)
4178 {
4179         u32 maj, min, bld;
4180         int ret, gpxe = 0;
4181         char *fw_name;
4182
4183         maj = vdev->config.device_hw_info.fw_version.major;
4184         min = vdev->config.device_hw_info.fw_version.minor;
4185         bld = vdev->config.device_hw_info.fw_version.build;
4186
4187         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4188                 return 0;
4189
4190         /* Ignore the build number when determining if the current firmware is
4191          * "too new" to load the driver
4192          */
4193         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4194                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4195                                 "version, unable to load driver\n",
4196                                 VXGE_DRIVER_NAME);
4197                 return -EINVAL;
4198         }
4199
4200         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4201          * work with this driver.
4202          */
4203         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4204                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4205                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4206                 return -EINVAL;
4207         }
4208
4209         /* If file not specified, determine gPXE or not */
4210         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4211                 int i;
4212                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4213                         if (vdev->devh->eprom_versions[i]) {
4214                                 gpxe = 1;
4215                                 break;
4216                         }
4217         }
4218         if (gpxe)
4219                 fw_name = "/*(DEBLOBBED)*/";
4220         else
4221                 fw_name = "/*(DEBLOBBED)*/";
4222
4223         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4224         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4225          * probe, so ignore them
4226          */
4227         if (ret != -EINVAL && ret != -ENOENT)
4228                 return -EIO;
4229         else
4230                 ret = 0;
4231
4232         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4233             VXGE_FW_VER(maj, min, 0)) {
4234                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4235                                 " be used with this driver.",
4236                                 VXGE_DRIVER_NAME, maj, min, bld);
4237                 return -EINVAL;
4238         }
4239
4240         return ret;
4241 }
4242
4243 static int is_sriov_initialized(struct pci_dev *pdev)
4244 {
4245         int pos;
4246         u16 ctrl;
4247
4248         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4249         if (pos) {
4250                 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4251                 if (ctrl & PCI_SRIOV_CTRL_VFE)
4252                         return 1;
4253         }
4254         return 0;
4255 }
4256
4257 static const struct vxge_hw_uld_cbs vxge_callbacks = {
4258         .link_up = vxge_callback_link_up,
4259         .link_down = vxge_callback_link_down,
4260         .crit_err = vxge_callback_crit_err,
4261 };
4262
4263 /**
4264  * vxge_probe
4265  * @pdev : structure containing the PCI related information of the device.
4266  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4267  * Description:
4268  * This function is called when a new PCI device gets detected and initializes
4269  * it.
4270  * Return value:
4271  * returns 0 on success and negative on failure.
4272  *
4273  */
4274 static int
4275 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4276 {
4277         struct __vxge_hw_device *hldev;
4278         enum vxge_hw_status status;
4279         int ret;
4280         u64 vpath_mask = 0;
4281         struct vxgedev *vdev;
4282         struct vxge_config *ll_config = NULL;
4283         struct vxge_hw_device_config *device_config = NULL;
4284         struct vxge_hw_device_attr attr;
4285         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4286         u8 *macaddr;
4287         struct vxge_mac_addrs *entry;
4288         static int bus = -1, device = -1;
4289         u32 host_type;
4290         u8 new_device = 0;
4291         enum vxge_hw_status is_privileged;
4292         u32 function_mode;
4293         u32 num_vfs = 0;
4294
4295         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4296         attr.pdev = pdev;
4297
4298         /* In SRIOV-17 mode, functions of the same adapter
4299          * can be deployed on different buses
4300          */
4301         if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4302             !pdev->is_virtfn)
4303                 new_device = 1;
4304
4305         bus = pdev->bus->number;
4306         device = PCI_SLOT(pdev->devfn);
4307
4308         if (new_device) {
4309                 if (driver_config->config_dev_cnt &&
4310                    (driver_config->config_dev_cnt !=
4311                         driver_config->total_dev_cnt))
4312                         vxge_debug_init(VXGE_ERR,
4313                                 "%s: Configured %d of %d devices",
4314                                 VXGE_DRIVER_NAME,
4315                                 driver_config->config_dev_cnt,
4316                                 driver_config->total_dev_cnt);
4317                 driver_config->config_dev_cnt = 0;
4318                 driver_config->total_dev_cnt = 0;
4319         }
4320
4321         /* Now making the CPU based no of vpath calculation
4322          * applicable for individual functions as well.
4323          */
4324         driver_config->g_no_cpus = 0;
4325         driver_config->vpath_per_dev = max_config_vpath;
4326
4327         driver_config->total_dev_cnt++;
4328         if (++driver_config->config_dev_cnt > max_config_dev) {
4329                 ret = 0;
4330                 goto _exit0;
4331         }
4332
4333         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4334                 GFP_KERNEL);
4335         if (!device_config) {
4336                 ret = -ENOMEM;
4337                 vxge_debug_init(VXGE_ERR,
4338                         "device_config : malloc failed %s %d",
4339                         __FILE__, __LINE__);
4340                 goto _exit0;
4341         }
4342
4343         ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4344         if (!ll_config) {
4345                 ret = -ENOMEM;
4346                 vxge_debug_init(VXGE_ERR,
4347                         "device_config : malloc failed %s %d",
4348                         __FILE__, __LINE__);
4349                 goto _exit0;
4350         }
4351         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4352         ll_config->intr_type = MSI_X;
4353         ll_config->napi_weight = NAPI_POLL_WEIGHT;
4354         ll_config->rth_steering = RTH_STEERING;
4355
4356         /* get the default configuration parameters */
4357         vxge_hw_device_config_default_get(device_config);
4358
4359         /* initialize configuration parameters */
4360         vxge_device_config_init(device_config, &ll_config->intr_type);
4361
4362         ret = pci_enable_device(pdev);
4363         if (ret) {
4364                 vxge_debug_init(VXGE_ERR,
4365                         "%s : can not enable PCI device", __func__);
4366                 goto _exit0;
4367         }
4368
4369         if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
4370                 vxge_debug_ll_config(VXGE_TRACE,
4371                         "%s : using 64bit DMA", __func__);
4372         } else {
4373                 ret = -ENOMEM;
4374                 goto _exit1;
4375         }
4376
4377         ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
4378         if (ret) {
4379                 vxge_debug_init(VXGE_ERR,
4380                         "%s : request regions failed", __func__);
4381                 goto _exit1;
4382         }
4383
4384         pci_set_master(pdev);
4385
4386         attr.bar0 = pci_ioremap_bar(pdev, 0);
4387         if (!attr.bar0) {
4388                 vxge_debug_init(VXGE_ERR,
4389                         "%s : cannot remap io memory bar0", __func__);
4390                 ret = -ENODEV;
4391                 goto _exit2;
4392         }
4393         vxge_debug_ll_config(VXGE_TRACE,
4394                 "pci ioremap bar0: %p:0x%llx",
4395                 attr.bar0,
4396                 (unsigned long long)pci_resource_start(pdev, 0));
4397
4398         status = vxge_hw_device_hw_info_get(attr.bar0,
4399                         &ll_config->device_hw_info);
4400         if (status != VXGE_HW_OK) {
4401                 vxge_debug_init(VXGE_ERR,
4402                         "%s: Reading of hardware info failed."
4403                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4404                 ret = -EINVAL;
4405                 goto _exit3;
4406         }
4407
4408         vpath_mask = ll_config->device_hw_info.vpath_mask;
4409         if (vpath_mask == 0) {
4410                 vxge_debug_ll_config(VXGE_TRACE,
4411                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4412                 ret = -EINVAL;
4413                 goto _exit3;
4414         }
4415
4416         vxge_debug_ll_config(VXGE_TRACE,
4417                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4418                 (unsigned long long)vpath_mask);
4419
4420         function_mode = ll_config->device_hw_info.function_mode;
4421         host_type = ll_config->device_hw_info.host_type;
4422         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4423                 ll_config->device_hw_info.func_id);
4424
4425         /* Check how many vpaths are available */
4426         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4427                 if (!((vpath_mask) & vxge_mBIT(i)))
4428                         continue;
4429                 max_vpath_supported++;
4430         }
4431
4432         if (new_device)
4433                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4434
4435         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4436         if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4437            (ll_config->intr_type != INTA)) {
4438                 ret = pci_enable_sriov(pdev, num_vfs);
4439                 if (ret)
4440                         vxge_debug_ll_config(VXGE_ERR,
4441                                 "Failed in enabling SRIOV mode: %d\n", ret);
4442                         /* No need to fail out, as an error here is non-fatal */
4443         }
4444
4445         /*
4446          * Configure vpaths and get driver configured number of vpaths
4447          * which is less than or equal to the maximum vpaths per function.
4448          */
4449         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4450         if (!no_of_vpath) {
4451                 vxge_debug_ll_config(VXGE_ERR,
4452                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4453                 ret = 0;
4454                 goto _exit3;
4455         }
4456
4457         /* Setting driver callbacks */
4458         attr.uld_callbacks = &vxge_callbacks;
4459
4460         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4461         if (status != VXGE_HW_OK) {
4462                 vxge_debug_init(VXGE_ERR,
4463                         "Failed to initialize device (%d)", status);
4464                 ret = -EINVAL;
4465                 goto _exit3;
4466         }
4467
4468         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4469                         ll_config->device_hw_info.fw_version.minor,
4470                         ll_config->device_hw_info.fw_version.build) >=
4471             VXGE_EPROM_FW_VER) {
4472                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4473
4474                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4475                 if (status != VXGE_HW_OK) {
4476                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4477                                         VXGE_DRIVER_NAME);
4478                         /* This is a non-fatal error, continue */
4479                 }
4480
4481                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4482                         hldev->eprom_versions[i] = img[i].version;
4483                         if (!img[i].is_valid)
4484                                 break;
4485                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4486                                         "%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4487                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4488                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4489                                         VXGE_EPROM_IMG_FIX(img[i].version),
4490                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4491                 }
4492         }
4493
4494         /* if FCS stripping is not disabled in MAC fail driver load */
4495         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4496         if (status != VXGE_HW_OK) {
4497                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4498                                 " failing driver load", VXGE_DRIVER_NAME);
4499                 ret = -EINVAL;
4500                 goto _exit4;
4501         }
4502
4503         /* Always enable HWTS.  This will always cause the FCS to be invalid,
4504          * due to the fact that HWTS is using the FCS as the location of the
4505          * timestamp.  The HW FCS checking will still correctly determine if
4506          * there is a valid checksum, and the FCS is being removed by the driver
4507          * anyway.  So no functionality is being lost.  Since it is always
4508          * enabled, we now simply use the ioctl call to set whether or not the
4509          * driver should be paying attention to the HWTS.
4510          */
4511         if (is_privileged == VXGE_HW_OK) {
4512                 status = vxge_timestamp_config(hldev);
4513                 if (status != VXGE_HW_OK) {
4514                         vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
4515                                         VXGE_DRIVER_NAME);
4516                         ret = -EFAULT;
4517                         goto _exit4;
4518                 }
4519         }
4520
4521         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4522
4523         /* set private device info */
4524         pci_set_drvdata(pdev, hldev);
4525
4526         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4527         ll_config->addr_learn_en = addr_learn_en;
4528         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4529         ll_config->rth_hash_type_tcpipv4 = 1;
4530         ll_config->rth_hash_type_ipv4 = 0;
4531         ll_config->rth_hash_type_tcpipv6 = 0;
4532         ll_config->rth_hash_type_ipv6 = 0;
4533         ll_config->rth_hash_type_tcpipv6ex = 0;
4534         ll_config->rth_hash_type_ipv6ex = 0;
4535         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4536         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4537         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4538
4539         ret = vxge_device_register(hldev, ll_config, no_of_vpath, &vdev);
4540         if (ret) {
4541                 ret = -EINVAL;
4542                 goto _exit4;
4543         }
4544
4545         ret = vxge_probe_fw_update(vdev);
4546         if (ret)
4547                 goto _exit5;
4548
4549         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4550         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4551                 vxge_hw_device_trace_level_get(hldev));
4552
4553         /* set private HW device info */
4554         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4555         vdev->bar0 = attr.bar0;
4556         vdev->max_vpath_supported = max_vpath_supported;
4557         vdev->no_of_vpath = no_of_vpath;
4558
4559         /* Virtual Path count */
4560         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4561                 if (!vxge_bVALn(vpath_mask, i, 1))
4562                         continue;
4563                 if (j >= vdev->no_of_vpath)
4564                         break;
4565
4566                 vdev->vpaths[j].is_configured = 1;
4567                 vdev->vpaths[j].device_id = i;
4568                 vdev->vpaths[j].ring.driver_id = j;
4569                 vdev->vpaths[j].vdev = vdev;
4570                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4571                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4572                                 ll_config->device_hw_info.mac_addrs[i],
4573                                 ETH_ALEN);
4574
4575                 /* Initialize the mac address list header */
4576                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4577
4578                 vdev->vpaths[j].mac_addr_cnt = 0;
4579                 vdev->vpaths[j].mcast_addr_cnt = 0;
4580                 j++;
4581         }
4582         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4583         vdev->max_config_port = max_config_port;
4584
4585         vdev->vlan_tag_strip = vlan_tag_strip;
4586
4587         /* map the hashing selector table to the configured vpaths */
4588         for (i = 0; i < vdev->no_of_vpath; i++)
4589                 vdev->vpath_selector[i] = vpath_selector[i];
4590
4591         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4592
4593         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4594         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4595         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4596
4597         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4598                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4599
4600         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4601                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4602
4603         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4604                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4605
4606         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4607                 vdev->ndev->name, macaddr);
4608
4609         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4610                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4611
4612         vxge_debug_init(VXGE_TRACE,
4613                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4614                 ll_config->device_hw_info.fw_version.version,
4615                 ll_config->device_hw_info.fw_date.date);
4616
4617         if (new_device) {
4618                 switch (ll_config->device_hw_info.function_mode) {
4619                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4620                         vxge_debug_init(VXGE_TRACE,
4621                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4622                 break;
4623                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4624                         vxge_debug_init(VXGE_TRACE,
4625                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4626                 break;
4627                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4628                         vxge_debug_init(VXGE_TRACE,
4629                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4630                 break;
4631                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4632                         vxge_debug_init(VXGE_TRACE,
4633                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4634                 break;
4635                 }
4636         }
4637
4638         vxge_print_parm(vdev, vpath_mask);
4639
4640         /* Store the fw version for ethttool option */
4641         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4642         eth_hw_addr_set(vdev->ndev, (u8 *)vdev->vpaths[0].macaddr);
4643
4644         /* Copy the station mac address to the list */
4645         for (i = 0; i < vdev->no_of_vpath; i++) {
4646                 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4647                 if (NULL == entry) {
4648                         vxge_debug_init(VXGE_ERR,
4649                                 "%s: mac_addr_list : memory allocation failed",
4650                                 vdev->ndev->name);
4651                         ret = -EPERM;
4652                         goto _exit6;
4653                 }
4654                 macaddr = (u8 *)&entry->macaddr;
4655                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4656                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4657                 vdev->vpaths[i].mac_addr_cnt = 1;
4658         }
4659
4660         kfree(device_config);
4661
4662         /*
4663          * INTA is shared in multi-function mode. This is unlike the INTA
4664          * implementation in MR mode, where each VH has its own INTA message.
4665          * - INTA is masked (disabled) as long as at least one function sets
4666          * its TITAN_MASK_ALL_INT.ALARM bit.
4667          * - INTA is unmasked (enabled) when all enabled functions have cleared
4668          * their own TITAN_MASK_ALL_INT.ALARM bit.
4669          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4670          * Though this driver leaves the top level interrupts unmasked while
4671          * leaving the required module interrupt bits masked on exit, there
4672          * could be a rougue driver around that does not follow this procedure
4673          * resulting in a failure to generate interrupts. The following code is
4674          * present to prevent such a failure.
4675          */
4676
4677         if (ll_config->device_hw_info.function_mode ==
4678                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4679                 if (vdev->config.intr_type == INTA)
4680                         vxge_hw_device_unmask_all(hldev);
4681
4682         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4683                 vdev->ndev->name, __func__, __LINE__);
4684
4685         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4686         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4687                 vxge_hw_device_trace_level_get(hldev));
4688
4689         kfree(ll_config);
4690         return 0;
4691
4692 _exit6:
4693         for (i = 0; i < vdev->no_of_vpath; i++)
4694                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4695 _exit5:
4696         vxge_device_unregister(hldev);
4697 _exit4:
4698         vxge_hw_device_terminate(hldev);
4699         pci_disable_sriov(pdev);
4700 _exit3:
4701         iounmap(attr.bar0);
4702 _exit2:
4703         pci_release_region(pdev, 0);
4704 _exit1:
4705         pci_disable_device(pdev);
4706 _exit0:
4707         kfree(ll_config);
4708         kfree(device_config);
4709         driver_config->config_dev_cnt--;
4710         driver_config->total_dev_cnt--;
4711         return ret;
4712 }
4713
4714 /**
4715  * vxge_remove - Free the PCI device
4716  * @pdev: structure containing the PCI related information of the device.
4717  * Description: This function is called by the Pci subsystem to release a
4718  * PCI device and free up all resource held up by the device.
4719  */
4720 static void vxge_remove(struct pci_dev *pdev)
4721 {
4722         struct __vxge_hw_device *hldev;
4723         struct vxgedev *vdev;
4724         int i;
4725
4726         hldev = pci_get_drvdata(pdev);
4727         if (hldev == NULL)
4728                 return;
4729
4730         vdev = netdev_priv(hldev->ndev);
4731
4732         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4733         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4734                         __func__);
4735
4736         for (i = 0; i < vdev->no_of_vpath; i++)
4737                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4738
4739         vxge_device_unregister(hldev);
4740         /* Do not call pci_disable_sriov here, as it will break child devices */
4741         vxge_hw_device_terminate(hldev);
4742         iounmap(vdev->bar0);
4743         pci_release_region(pdev, 0);
4744         pci_disable_device(pdev);
4745         driver_config->config_dev_cnt--;
4746         driver_config->total_dev_cnt--;
4747
4748         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4749                         __func__, __LINE__);
4750         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4751                              __LINE__);
4752 }
4753
4754 static const struct pci_error_handlers vxge_err_handler = {
4755         .error_detected = vxge_io_error_detected,
4756         .slot_reset = vxge_io_slot_reset,
4757         .resume = vxge_io_resume,
4758 };
4759
4760 static SIMPLE_DEV_PM_OPS(vxge_pm_ops, vxge_pm_suspend, vxge_pm_resume);
4761
4762 static struct pci_driver vxge_driver = {
4763         .name = VXGE_DRIVER_NAME,
4764         .id_table = vxge_id_table,
4765         .probe = vxge_probe,
4766         .remove = vxge_remove,
4767         .driver.pm = &vxge_pm_ops,
4768         .err_handler = &vxge_err_handler,
4769 };
4770
4771 static int __init
4772 vxge_starter(void)
4773 {
4774         int ret = 0;
4775
4776         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4777         pr_info("Driver version: %s\n", DRV_VERSION);
4778
4779         verify_bandwidth();
4780
4781         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4782         if (!driver_config)
4783                 return -ENOMEM;
4784
4785         ret = pci_register_driver(&vxge_driver);
4786         if (ret) {
4787                 kfree(driver_config);
4788                 goto err;
4789         }
4790
4791         if (driver_config->config_dev_cnt &&
4792            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4793                 vxge_debug_init(VXGE_ERR,
4794                         "%s: Configured %d of %d devices",
4795                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4796                         driver_config->total_dev_cnt);
4797 err:
4798         return ret;
4799 }
4800
4801 static void __exit
4802 vxge_closer(void)
4803 {
4804         pci_unregister_driver(&vxge_driver);
4805         kfree(driver_config);
4806 }
4807 module_init(vxge_starter);
4808 module_exit(vxge_closer);