drivers/net/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 "vxge-main.h"
  59 #include "vxge-reg.h"
  60
  61 MODULE_LICENSE("Dual BSD/GPL");
  62 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  63         "Virtualized Server Adapter");
  64
  65 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
  66         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  67         PCI_ANY_ID},
  68         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  69         PCI_ANY_ID},
  70         {0}
  71 };
  72
  73 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  74
  75 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  76 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  77 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  78 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  79 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  80 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  81
  82 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  83                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  84 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  85         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  86 module_param_array(bw_percentage, uint, NULL, 0);
  87
  88 static struct vxge_drv_config *driver_config;
  89
  90 static inline int is_vxge_card_up(struct vxgedev *vdev)
  91 {
  92         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  93 }
  94
  95 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  96 {
  97         struct sk_buff **skb_ptr = NULL;
  98         struct sk_buff **temp;
  99 #define NR_SKB_COMPLETED 128
 100         struct sk_buff *completed[NR_SKB_COMPLETED];
 101         int more;
 102
 103         do {
 104                 more = 0;
 105                 skb_ptr = completed;
 106
 107                 if (__netif_tx_trylock(fifo->txq)) {
 108                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 109                                                 NR_SKB_COMPLETED, &more);
 110                         __netif_tx_unlock(fifo->txq);
 111                 }
 112
 113                 /* free SKBs */
 114                 for (temp = completed; temp != skb_ptr; temp++)
 115                         dev_kfree_skb_irq(*temp);
 116         } while (more);
 117 }
 118
 119 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 120 {
 121         int i;
 122
 123         /* Complete all transmits */
 124         for (i = 0; i < vdev->no_of_vpath; i++)
 125                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 126 }
 127
 128 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 129 {
 130         int i;
 131         struct vxge_ring *ring;
 132
 133         /* Complete all receives*/
 134         for (i = 0; i < vdev->no_of_vpath; i++) {
 135                 ring = &vdev->vpaths[i].ring;
 136                 vxge_hw_vpath_poll_rx(ring->handle);
 137         }
 138 }
 139
 140 /*
 141  * vxge_callback_link_up
 142  *
 143  * This function is called during interrupt context to notify link up state
 144  * change.
 145  */
 146 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
 147 {
 148         struct net_device *dev = hldev->ndev;
 149         struct vxgedev *vdev = netdev_priv(dev);
 150
 151         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 152                 vdev->ndev->name, __func__, __LINE__);
 153         netdev_notice(vdev->ndev, "Link Up\n");
 154         vdev->stats.link_up++;
 155
 156         netif_carrier_on(vdev->ndev);
 157         netif_tx_wake_all_queues(vdev->ndev);
 158
 159         vxge_debug_entryexit(VXGE_TRACE,
 160                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 161 }
 162
 163 /*
 164  * vxge_callback_link_down
 165  *
 166  * This function is called during interrupt context to notify link down state
 167  * change.
 168  */
 169 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
 170 {
 171         struct net_device *dev = hldev->ndev;
 172         struct vxgedev *vdev = netdev_priv(dev);
 173
 174         vxge_debug_entryexit(VXGE_TRACE,
 175                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 176         netdev_notice(vdev->ndev, "Link Down\n");
 177
 178         vdev->stats.link_down++;
 179         netif_carrier_off(vdev->ndev);
 180         netif_tx_stop_all_queues(vdev->ndev);
 181
 182         vxge_debug_entryexit(VXGE_TRACE,
 183                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 184 }
 185
 186 /*
 187  * vxge_rx_alloc
 188  *
 189  * Allocate SKB.
 190  */
 191 static struct sk_buff *
 192 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 193 {
 194         struct net_device    *dev;
 195         struct sk_buff       *skb;
 196         struct vxge_rx_priv *rx_priv;
 197
 198         dev = ring->ndev;
 199         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 200                 ring->ndev->name, __func__, __LINE__);
 201
 202         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 203
 204         /* try to allocate skb first. this one may fail */
 205         skb = netdev_alloc_skb(dev, skb_size +
 206         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 207         if (skb == NULL) {
 208                 vxge_debug_mem(VXGE_ERR,
 209                         "%s: out of memory to allocate SKB", dev->name);
 210                 ring->stats.skb_alloc_fail++;
 211                 return NULL;
 212         }
 213
 214         vxge_debug_mem(VXGE_TRACE,
 215                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 216                 __func__, __LINE__, skb);
 217
 218         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 219
 220         rx_priv->skb = skb;
 221         rx_priv->skb_data = NULL;
 222         rx_priv->data_size = skb_size;
 223         vxge_debug_entryexit(VXGE_TRACE,
 224                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 225
 226         return skb;
 227 }
 228
 229 /*
 230  * vxge_rx_map
 231  */
 232 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 233 {
 234         struct vxge_rx_priv *rx_priv;
 235         dma_addr_t dma_addr;
 236
 237         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 238                 ring->ndev->name, __func__, __LINE__);
 239         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 240
 241         rx_priv->skb_data = rx_priv->skb->data;
 242         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 243                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 244
 245         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 246                 ring->stats.pci_map_fail++;
 247                 return -EIO;
 248         }
 249         vxge_debug_mem(VXGE_TRACE,
 250                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 251                 ring->ndev->name, __func__, __LINE__,
 252                 (unsigned long long)dma_addr);
 253         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 254
 255         rx_priv->data_dma = dma_addr;
 256         vxge_debug_entryexit(VXGE_TRACE,
 257                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 258
 259         return 0;
 260 }
 261
 262 /*
 263  * vxge_rx_initial_replenish
 264  * Allocation of RxD as an initial replenish procedure.
 265  */
 266 static enum vxge_hw_status
 267 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 268 {
 269         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 270         struct vxge_rx_priv *rx_priv;
 271
 272         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 273                 ring->ndev->name, __func__, __LINE__);
 274         if (vxge_rx_alloc(dtrh, ring,
 275                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 276                 return VXGE_HW_FAIL;
 277
 278         if (vxge_rx_map(dtrh, ring)) {
 279                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 280                 dev_kfree_skb(rx_priv->skb);
 281
 282                 return VXGE_HW_FAIL;
 283         }
 284         vxge_debug_entryexit(VXGE_TRACE,
 285                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 286
 287         return VXGE_HW_OK;
 288 }
 289
 290 static inline void
 291 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 292                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 293 {
 294
 295         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 296                         ring->ndev->name, __func__, __LINE__);
 297         skb_record_rx_queue(skb, ring->driver_id);
 298         skb->protocol = eth_type_trans(skb, ring->ndev);
 299
 300         u64_stats_update_begin(&ring->stats.syncp);
 301         ring->stats.rx_frms++;
 302         ring->stats.rx_bytes += pkt_length;
 303
 304         if (skb->pkt_type == PACKET_MULTICAST)
 305                 ring->stats.rx_mcast++;
 306         u64_stats_update_end(&ring->stats.syncp);
 307
 308         vxge_debug_rx(VXGE_TRACE,
 309                 "%s: %s:%d  skb protocol = %d",
 310                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 311
 312         if (ext_info->vlan &&
 313             ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
 314                 __vlan_hwaccel_put_tag(skb, ext_info->vlan);
 315         napi_gro_receive(ring->napi_p, skb);
 316
 317         vxge_debug_entryexit(VXGE_TRACE,
 318                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 319 }
 320
 321 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 322                                     struct vxge_rx_priv *rx_priv)
 323 {
 324         pci_dma_sync_single_for_device(ring->pdev,
 325                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 326
 327         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 328         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 329 }
 330
 331 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 332                              void *post_dtr, struct __vxge_hw_ring *ringh)
 333 {
 334         int dtr_count = *dtr_cnt;
 335         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 336                 if (*first_dtr)
 337                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 338                 *first_dtr = post_dtr;
 339         } else
 340                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 341         dtr_count++;
 342         *dtr_cnt = dtr_count;
 343 }
 344
 345 /*
 346  * vxge_rx_1b_compl
 347  *
 348  * If the interrupt is because of a received frame or if the receive ring
 349  * contains fresh as yet un-processed frames, this function is called.
 350  */
 351 static enum vxge_hw_status
 352 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 353                  u8 t_code, void *userdata)
 354 {
 355         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 356         struct net_device *dev = ring->ndev;
 357         unsigned int dma_sizes;
 358         void *first_dtr = NULL;
 359         int dtr_cnt = 0;
 360         int data_size;
 361         dma_addr_t data_dma;
 362         int pkt_length;
 363         struct sk_buff *skb;
 364         struct vxge_rx_priv *rx_priv;
 365         struct vxge_hw_ring_rxd_info ext_info;
 366         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 367                 ring->ndev->name, __func__, __LINE__);
 368
 369         do {
 370                 prefetch((char *)dtr + L1_CACHE_BYTES);
 371                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 372                 skb = rx_priv->skb;
 373                 data_size = rx_priv->data_size;
 374                 data_dma = rx_priv->data_dma;
 375                 prefetch(rx_priv->skb_data);
 376
 377                 vxge_debug_rx(VXGE_TRACE,
 378                         "%s: %s:%d  skb = 0x%p",
 379                         ring->ndev->name, __func__, __LINE__, skb);
 380
 381                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 382                 pkt_length = dma_sizes;
 383
 384                 pkt_length -= ETH_FCS_LEN;
 385
 386                 vxge_debug_rx(VXGE_TRACE,
 387                         "%s: %s:%d  Packet Length = %d",
 388                         ring->ndev->name, __func__, __LINE__, pkt_length);
 389
 390                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 391
 392                 /* check skb validity */
 393                 vxge_assert(skb);
 394
 395                 prefetch((char *)skb + L1_CACHE_BYTES);
 396                 if (unlikely(t_code)) {
 397                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 398                                 VXGE_HW_OK) {
 399
 400                                 ring->stats.rx_errors++;
 401                                 vxge_debug_rx(VXGE_TRACE,
 402                                         "%s: %s :%d Rx T_code is %d",
 403                                         ring->ndev->name, __func__,
 404                                         __LINE__, t_code);
 405
 406                                 /* If the t_code is not supported and if the
 407                                  * t_code is other than 0x5 (unparseable packet
 408                                  * such as unknown UPV6 header), Drop it !!!
 409                                  */
 410                                 vxge_re_pre_post(dtr, ring, rx_priv);
 411
 412                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 413                                 ring->stats.rx_dropped++;
 414                                 continue;
 415                         }
 416                 }
 417
 418                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 419                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 420                                 if (!vxge_rx_map(dtr, ring)) {
 421                                         skb_put(skb, pkt_length);
 422
 423                                         pci_unmap_single(ring->pdev, data_dma,
 424                                                 data_size, PCI_DMA_FROMDEVICE);
 425
 426                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 427                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 428                                                 ringh);
 429                                 } else {
 430                                         dev_kfree_skb(rx_priv->skb);
 431                                         rx_priv->skb = skb;
 432                                         rx_priv->data_size = data_size;
 433                                         vxge_re_pre_post(dtr, ring, rx_priv);
 434
 435                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 436                                                 ringh);
 437                                         ring->stats.rx_dropped++;
 438                                         break;
 439                                 }
 440                         } else {
 441                                 vxge_re_pre_post(dtr, ring, rx_priv);
 442
 443                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 444                                 ring->stats.rx_dropped++;
 445                                 break;
 446                         }
 447                 } else {
 448                         struct sk_buff *skb_up;
 449
 450                         skb_up = netdev_alloc_skb(dev, pkt_length +
 451                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 452                         if (skb_up != NULL) {
 453                                 skb_reserve(skb_up,
 454                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 455
 456                                 pci_dma_sync_single_for_cpu(ring->pdev,
 457                                         data_dma, data_size,
 458                                         PCI_DMA_FROMDEVICE);
 459
 460                                 vxge_debug_mem(VXGE_TRACE,
 461                                         "%s: %s:%d  skb_up = %p",
 462                                         ring->ndev->name, __func__,
 463                                         __LINE__, skb);
 464                                 memcpy(skb_up->data, skb->data, pkt_length);
 465
 466                                 vxge_re_pre_post(dtr, ring, rx_priv);
 467
 468                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 469                                         ringh);
 470                                 /* will netif_rx small SKB instead */
 471                                 skb = skb_up;
 472                                 skb_put(skb, pkt_length);
 473                         } else {
 474                                 vxge_re_pre_post(dtr, ring, rx_priv);
 475
 476                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 477                                 vxge_debug_rx(VXGE_ERR,
 478                                         "%s: vxge_rx_1b_compl: out of "
 479                                         "memory", dev->name);
 480                                 ring->stats.skb_alloc_fail++;
 481                                 break;
 482                         }
 483                 }
 484
 485                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 486                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 487                     (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */
 488                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 489                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 490                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 491                 else
 492                         skb_checksum_none_assert(skb);
 493
 494
 495                 if (ring->rx_hwts) {
 496                         struct skb_shared_hwtstamps *skb_hwts;
 497                         u32 ns = *(u32 *)(skb->head + pkt_length);
 498
 499                         skb_hwts = skb_hwtstamps(skb);
 500                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 501                         skb_hwts->syststamp.tv64 = 0;
 502                 }
 503
 504                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 505                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 506                  * if rss is disabled/enabled, so key off of that.
 507                  */
 508                 if (ext_info.rth_value)
 509                         skb->rxhash = ext_info.rth_value;
 510
 511                 vxge_rx_complete(ring, skb, ext_info.vlan,
 512                         pkt_length, &ext_info);
 513
 514                 ring->budget--;
 515                 ring->pkts_processed++;
 516                 if (!ring->budget)
 517                         break;
 518
 519         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 520                 &t_code) == VXGE_HW_OK);
 521
 522         if (first_dtr)
 523                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 524
 525         vxge_debug_entryexit(VXGE_TRACE,
 526                                 "%s:%d  Exiting...",
 527                                 __func__, __LINE__);
 528         return VXGE_HW_OK;
 529 }
 530
 531 /*
 532  * vxge_xmit_compl
 533  *
 534  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 535  * this function is called. It identifies the last TxD whose buffer was
 536  * freed and frees all skbs whose data have already DMA'ed into the NICs
 537  * internal memory.
 538  */
 539 static enum vxge_hw_status
 540 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 541                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 542                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 543 {
 544         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 545         struct sk_buff *skb, **done_skb = *skb_ptr;
 546         int pkt_cnt = 0;
 547
 548         vxge_debug_entryexit(VXGE_TRACE,
 549                 "%s:%d Entered....", __func__, __LINE__);
 550
 551         do {
 552                 int frg_cnt;
 553                 skb_frag_t *frag;
 554                 int i = 0, j;
 555                 struct vxge_tx_priv *txd_priv =
 556                         vxge_hw_fifo_txdl_private_get(dtr);
 557
 558                 skb = txd_priv->skb;
 559                 frg_cnt = skb_shinfo(skb)->nr_frags;
 560                 frag = &skb_shinfo(skb)->frags[0];
 561
 562                 vxge_debug_tx(VXGE_TRACE,
 563                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 564                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 565                                 __LINE__, fifo_hw, dtr, t_code);
 566                 /* check skb validity */
 567                 vxge_assert(skb);
 568                 vxge_debug_tx(VXGE_TRACE,
 569                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 570                         fifo->ndev->name, __func__, __LINE__,
 571                         skb, txd_priv, frg_cnt);
 572                 if (unlikely(t_code)) {
 573                         fifo->stats.tx_errors++;
 574                         vxge_debug_tx(VXGE_ERR,
 575                                 "%s: tx: dtr %p completed due to "
 576                                 "error t_code %01x", fifo->ndev->name,
 577                                 dtr, t_code);
 578                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 579                 }
 580
 581                 /*  for unfragmented skb */
 582                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 583                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 584
 585                 for (j = 0; j < frg_cnt; j++) {
 586                         pci_unmap_page(fifo->pdev,
 587                                         txd_priv->dma_buffers[i++],
 588                                         frag->size, PCI_DMA_TODEVICE);
 589                         frag += 1;
 590                 }
 591
 592                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 593
 594                 /* Updating the statistics block */
 595                 u64_stats_update_begin(&fifo->stats.syncp);
 596                 fifo->stats.tx_frms++;
 597                 fifo->stats.tx_bytes += skb->len;
 598                 u64_stats_update_end(&fifo->stats.syncp);
 599
 600                 *done_skb++ = skb;
 601
 602                 if (--nr_skb <= 0) {
 603                         *more = 1;
 604                         break;
 605                 }
 606
 607                 pkt_cnt++;
 608                 if (pkt_cnt > fifo->indicate_max_pkts)
 609                         break;
 610
 611         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 612                                 &dtr, &t_code) == VXGE_HW_OK);
 613
 614         *skb_ptr = done_skb;
 615         if (netif_tx_queue_stopped(fifo->txq))
 616                 netif_tx_wake_queue(fifo->txq);
 617
 618         vxge_debug_entryexit(VXGE_TRACE,
 619                                 "%s: %s:%d  Exiting...",
 620                                 fifo->ndev->name, __func__, __LINE__);
 621         return VXGE_HW_OK;
 622 }
 623
 624 /* select a vpath to transmit the packet */
 625 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 626 {
 627         u16 queue_len, counter = 0;
 628         if (skb->protocol == htons(ETH_P_IP)) {
 629                 struct iphdr *ip;
 630                 struct tcphdr *th;
 631
 632                 ip = ip_hdr(skb);
 633
 634                 if (!ip_is_fragment(ip)) {
 635                         th = (struct tcphdr *)(((unsigned char *)ip) +
 636                                         ip->ihl*4);
 637
 638                         queue_len = vdev->no_of_vpath;
 639                         counter = (ntohs(th->source) +
 640                                 ntohs(th->dest)) &
 641                                 vdev->vpath_selector[queue_len - 1];
 642                         if (counter >= queue_len)
 643                                 counter = queue_len - 1;
 644                 }
 645         }
 646         return counter;
 647 }
 648
 649 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 650         struct vxge_vpath *vpath, u64 del_mac)
 651 {
 652         struct list_head *entry, *next;
 653         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 654                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 655                         return TRUE;
 656         }
 657         return FALSE;
 658 }
 659
 660 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
 661 {
 662         struct vxge_mac_addrs *new_mac_entry;
 663         u8 *mac_address = NULL;
 664
 665         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
 666                 return TRUE;
 667
 668         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
 669         if (!new_mac_entry) {
 670                 vxge_debug_mem(VXGE_ERR,
 671                         "%s: memory allocation failed",
 672                         VXGE_DRIVER_NAME);
 673                 return FALSE;
 674         }
 675
 676         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
 677
 678         /* Copy the new mac address to the list */
 679         mac_address = (u8 *)&new_mac_entry->macaddr;
 680         memcpy(mac_address, mac->macaddr, ETH_ALEN);
 681
 682         new_mac_entry->state = mac->state;
 683         vpath->mac_addr_cnt++;
 684
 685         if (is_multicast_ether_addr(mac->macaddr))
 686                 vpath->mcast_addr_cnt++;
 687
 688         return TRUE;
 689 }
 690
 691 /* Add a mac address to DA table */
 692 static enum vxge_hw_status
 693 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
 694 {
 695         enum vxge_hw_status status = VXGE_HW_OK;
 696         struct vxge_vpath *vpath;
 697         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
 698
 699         if (is_multicast_ether_addr(mac->macaddr))
 700                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
 701         else
 702                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
 703
 704         vpath = &vdev->vpaths[mac->vpath_no];
 705         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
 706                                                 mac->macmask, duplicate_mode);
 707         if (status != VXGE_HW_OK) {
 708                 vxge_debug_init(VXGE_ERR,
 709                         "DA config add entry failed for vpath:%d",
 710                         vpath->device_id);
 711         } else
 712                 if (FALSE == vxge_mac_list_add(vpath, mac))
 713                         status = -EPERM;
 714
 715         return status;
 716 }
 717
 718 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 719 {
 720         struct macInfo mac_info;
 721         u8 *mac_address = NULL;
 722         u64 mac_addr = 0, vpath_vector = 0;
 723         int vpath_idx = 0;
 724         enum vxge_hw_status status = VXGE_HW_OK;
 725         struct vxge_vpath *vpath = NULL;
 726         struct __vxge_hw_device *hldev;
 727
 728         hldev = pci_get_drvdata(vdev->pdev);
 729
 730         mac_address = (u8 *)&mac_addr;
 731         memcpy(mac_address, mac_header, ETH_ALEN);
 732
 733         /* Is this mac address already in the list? */
 734         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 735                 vpath = &vdev->vpaths[vpath_idx];
 736                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 737                         return vpath_idx;
 738         }
 739
 740         memset(&mac_info, 0, sizeof(struct macInfo));
 741         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 742
 743         /* Any vpath has room to add mac address to its da table? */
 744         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 745                 vpath = &vdev->vpaths[vpath_idx];
 746                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 747                         /* Add this mac address to this vpath */
 748                         mac_info.vpath_no = vpath_idx;
 749                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 750                         status = vxge_add_mac_addr(vdev, &mac_info);
 751                         if (status != VXGE_HW_OK)
 752                                 return -EPERM;
 753                         return vpath_idx;
 754                 }
 755         }
 756
 757         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 758         vpath_idx = 0;
 759         mac_info.vpath_no = vpath_idx;
 760         /* Is the first vpath already selected as catch-basin ? */
 761         vpath = &vdev->vpaths[vpath_idx];
 762         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 763                 /* Add this mac address to this vpath */
 764                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 765                         return -EPERM;
 766                 return vpath_idx;
 767         }
 768
 769         /* Select first vpath as catch-basin */
 770         vpath_vector = vxge_mBIT(vpath->device_id);
 771         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 772                                 vxge_hw_mgmt_reg_type_mrpcim,
 773                                 0,
 774                                 (ulong)offsetof(
 775                                         struct vxge_hw_mrpcim_reg,
 776                                         rts_mgr_cbasin_cfg),
 777                                 vpath_vector);
 778         if (status != VXGE_HW_OK) {
 779                 vxge_debug_tx(VXGE_ERR,
 780                         "%s: Unable to set the vpath-%d in catch-basin mode",
 781                         VXGE_DRIVER_NAME, vpath->device_id);
 782                 return -EPERM;
 783         }
 784
 785         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 786                 return -EPERM;
 787
 788         return vpath_idx;
 789 }
 790
 791 /**
 792  * vxge_xmit
 793  * @skb : the socket buffer containing the Tx data.
 794  * @dev : device pointer.
 795  *
 796  * This function is the Tx entry point of the driver. Neterion NIC supports
 797  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 798 */
 799 static netdev_tx_t
 800 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 801 {
 802         struct vxge_fifo *fifo = NULL;
 803         void *dtr_priv;
 804         void *dtr = NULL;
 805         struct vxgedev *vdev = NULL;
 806         enum vxge_hw_status status;
 807         int frg_cnt, first_frg_len;
 808         skb_frag_t *frag;
 809         int i = 0, j = 0, avail;
 810         u64 dma_pointer;
 811         struct vxge_tx_priv *txdl_priv = NULL;
 812         struct __vxge_hw_fifo *fifo_hw;
 813         int offload_type;
 814         int vpath_no = 0;
 815
 816         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 817                         dev->name, __func__, __LINE__);
 818
 819         /* A buffer with no data will be dropped */
 820         if (unlikely(skb->len <= 0)) {
 821                 vxge_debug_tx(VXGE_ERR,
 822                         "%s: Buffer has no data..", dev->name);
 823                 dev_kfree_skb(skb);
 824                 return NETDEV_TX_OK;
 825         }
 826
 827         vdev = netdev_priv(dev);
 828
 829         if (unlikely(!is_vxge_card_up(vdev))) {
 830                 vxge_debug_tx(VXGE_ERR,
 831                         "%s: vdev not initialized", dev->name);
 832                 dev_kfree_skb(skb);
 833                 return NETDEV_TX_OK;
 834         }
 835
 836         if (vdev->config.addr_learn_en) {
 837                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 838                 if (vpath_no == -EPERM) {
 839                         vxge_debug_tx(VXGE_ERR,
 840                                 "%s: Failed to store the mac address",
 841                                 dev->name);
 842                         dev_kfree_skb(skb);
 843                         return NETDEV_TX_OK;
 844                 }
 845         }
 846
 847         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 848                 vpath_no = skb_get_queue_mapping(skb);
 849         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 850                 vpath_no = vxge_get_vpath_no(vdev, skb);
 851
 852         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 853
 854         if (vpath_no >= vdev->no_of_vpath)
 855                 vpath_no = 0;
 856
 857         fifo = &vdev->vpaths[vpath_no].fifo;
 858         fifo_hw = fifo->handle;
 859
 860         if (netif_tx_queue_stopped(fifo->txq))
 861                 return NETDEV_TX_BUSY;
 862
 863         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 864         if (avail == 0) {
 865                 vxge_debug_tx(VXGE_ERR,
 866                         "%s: No free TXDs available", dev->name);
 867                 fifo->stats.txd_not_free++;
 868                 goto _exit0;
 869         }
 870
 871         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 872          * completion will resume the queue.
 873          */
 874         if (avail == 1)
 875                 netif_tx_stop_queue(fifo->txq);
 876
 877         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 878         if (unlikely(status != VXGE_HW_OK)) {
 879                 vxge_debug_tx(VXGE_ERR,
 880                    "%s: Out of descriptors .", dev->name);
 881                 fifo->stats.txd_out_of_desc++;
 882                 goto _exit0;
 883         }
 884
 885         vxge_debug_tx(VXGE_TRACE,
 886                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 887                 dev->name, __func__, __LINE__,
 888                 fifo_hw, dtr, dtr_priv);
 889
 890         if (vlan_tx_tag_present(skb)) {
 891                 u16 vlan_tag = vlan_tx_tag_get(skb);
 892                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 893         }
 894
 895         first_frg_len = skb_headlen(skb);
 896
 897         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 898                                 PCI_DMA_TODEVICE);
 899
 900         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 901                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 902                 fifo->stats.pci_map_fail++;
 903                 goto _exit0;
 904         }
 905
 906         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 907         txdl_priv->skb = skb;
 908         txdl_priv->dma_buffers[j] = dma_pointer;
 909
 910         frg_cnt = skb_shinfo(skb)->nr_frags;
 911         vxge_debug_tx(VXGE_TRACE,
 912                         "%s: %s:%d skb = %p txdl_priv = %p "
 913                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 914                         __func__, __LINE__, skb, txdl_priv,
 915                         frg_cnt, (unsigned long long)dma_pointer);
 916
 917         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 918                 first_frg_len);
 919
 920         frag = &skb_shinfo(skb)->frags[0];
 921         for (i = 0; i < frg_cnt; i++) {
 922                 /* ignore 0 length fragment */
 923                 if (!frag->size)
 924                         continue;
 925
 926                 dma_pointer = (u64) pci_map_page(fifo->pdev, frag->page,
 927                                 frag->page_offset, frag->size,
 928                                 PCI_DMA_TODEVICE);
 929
 930                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 931                         goto _exit2;
 932                 vxge_debug_tx(VXGE_TRACE,
 933                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 934                                 dev->name, __func__, __LINE__, i,
 935                                 (unsigned long long)dma_pointer);
 936
 937                 txdl_priv->dma_buffers[j] = dma_pointer;
 938                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 939                                         frag->size);
 940                 frag += 1;
 941         }
 942
 943         offload_type = vxge_offload_type(skb);
 944
 945         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 946                 int mss = vxge_tcp_mss(skb);
 947                 if (mss) {
 948                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 949                                 dev->name, __func__, __LINE__, mss);
 950                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 951                 } else {
 952                         vxge_assert(skb->len <=
 953                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 954                         vxge_assert(0);
 955                         goto _exit1;
 956                 }
 957         }
 958
 959         if (skb->ip_summed == CHECKSUM_PARTIAL)
 960                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 961                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 962                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 963                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 964
 965         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 966
 967         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 968                 dev->name, __func__, __LINE__);
 969         return NETDEV_TX_OK;
 970
 971 _exit2:
 972         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 973 _exit1:
 974         j = 0;
 975         frag = &skb_shinfo(skb)->frags[0];
 976
 977         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 978                         skb_headlen(skb), PCI_DMA_TODEVICE);
 979
 980         for (; j < i; j++) {
 981                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 982                         frag->size, PCI_DMA_TODEVICE);
 983                 frag += 1;
 984         }
 985
 986         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 987 _exit0:
 988         netif_tx_stop_queue(fifo->txq);
 989         dev_kfree_skb(skb);
 990
 991         return NETDEV_TX_OK;
 992 }
 993
 994 /*
 995  * vxge_rx_term
 996  *
 997  * Function will be called by hw function to abort all outstanding receive
 998  * descriptors.
 999  */
1000 static void
1001 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1002 {
1003         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1004         struct vxge_rx_priv *rx_priv =
1005                 vxge_hw_ring_rxd_private_get(dtrh);
1006
1007         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1008                         ring->ndev->name, __func__, __LINE__);
1009         if (state != VXGE_HW_RXD_STATE_POSTED)
1010                 return;
1011
1012         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1013                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1014
1015         dev_kfree_skb(rx_priv->skb);
1016         rx_priv->skb_data = NULL;
1017
1018         vxge_debug_entryexit(VXGE_TRACE,
1019                 "%s: %s:%d  Exiting...",
1020                 ring->ndev->name, __func__, __LINE__);
1021 }
1022
1023 /*
1024  * vxge_tx_term
1025  *
1026  * Function will be called to abort all outstanding tx descriptors
1027  */
1028 static void
1029 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1030 {
1031         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1032         skb_frag_t *frag;
1033         int i = 0, j, frg_cnt;
1034         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1035         struct sk_buff *skb = txd_priv->skb;
1036
1037         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1038
1039         if (state != VXGE_HW_TXDL_STATE_POSTED)
1040                 return;
1041
1042         /* check skb validity */
1043         vxge_assert(skb);
1044         frg_cnt = skb_shinfo(skb)->nr_frags;
1045         frag = &skb_shinfo(skb)->frags[0];
1046
1047         /*  for unfragmented skb */
1048         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1049                 skb_headlen(skb), PCI_DMA_TODEVICE);
1050
1051         for (j = 0; j < frg_cnt; j++) {
1052                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1053                                frag->size, PCI_DMA_TODEVICE);
1054                 frag += 1;
1055         }
1056
1057         dev_kfree_skb(skb);
1058
1059         vxge_debug_entryexit(VXGE_TRACE,
1060                 "%s:%d  Exiting...", __func__, __LINE__);
1061 }
1062
1063 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1064 {
1065         struct list_head *entry, *next;
1066         u64 del_mac = 0;
1067         u8 *mac_address = (u8 *) (&del_mac);
1068
1069         /* Copy the mac address to delete from the list */
1070         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1071
1072         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1073                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1074                         list_del(entry);
1075                         kfree((struct vxge_mac_addrs *)entry);
1076                         vpath->mac_addr_cnt--;
1077
1078                         if (is_multicast_ether_addr(mac->macaddr))
1079                                 vpath->mcast_addr_cnt--;
1080                         return TRUE;
1081                 }
1082         }
1083
1084         return FALSE;
1085 }
1086
1087 /* delete a mac address from DA table */
1088 static enum vxge_hw_status
1089 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1090 {
1091         enum vxge_hw_status status = VXGE_HW_OK;
1092         struct vxge_vpath *vpath;
1093
1094         vpath = &vdev->vpaths[mac->vpath_no];
1095         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1096                                                 mac->macmask);
1097         if (status != VXGE_HW_OK) {
1098                 vxge_debug_init(VXGE_ERR,
1099                         "DA config delete entry failed for vpath:%d",
1100                         vpath->device_id);
1101         } else
1102                 vxge_mac_list_del(vpath, mac);
1103         return status;
1104 }
1105
1106 /**
1107  * vxge_set_multicast
1108  * @dev: pointer to the device structure
1109  *
1110  * Entry point for multicast address enable/disable
1111  * This function is a driver entry point which gets called by the kernel
1112  * whenever multicast addresses must be enabled/disabled. This also gets
1113  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1114  * determine, if multicast address must be enabled or if promiscuous mode
1115  * is to be disabled etc.
1116  */
1117 static void vxge_set_multicast(struct net_device *dev)
1118 {
1119         struct netdev_hw_addr *ha;
1120         struct vxgedev *vdev;
1121         int i, mcast_cnt = 0;
1122         struct __vxge_hw_device *hldev;
1123         struct vxge_vpath *vpath;
1124         enum vxge_hw_status status = VXGE_HW_OK;
1125         struct macInfo mac_info;
1126         int vpath_idx = 0;
1127         struct vxge_mac_addrs *mac_entry;
1128         struct list_head *list_head;
1129         struct list_head *entry, *next;
1130         u8 *mac_address = NULL;
1131
1132         vxge_debug_entryexit(VXGE_TRACE,
1133                 "%s:%d", __func__, __LINE__);
1134
1135         vdev = netdev_priv(dev);
1136         hldev = (struct __vxge_hw_device  *)vdev->devh;
1137
1138         if (unlikely(!is_vxge_card_up(vdev)))
1139                 return;
1140
1141         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1142                 for (i = 0; i < vdev->no_of_vpath; i++) {
1143                         vpath = &vdev->vpaths[i];
1144                         vxge_assert(vpath->is_open);
1145                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1146                         if (status != VXGE_HW_OK)
1147                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1148                                                 "multicast, status %d", status);
1149                         vdev->all_multi_flg = 1;
1150                 }
1151         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1152                 for (i = 0; i < vdev->no_of_vpath; i++) {
1153                         vpath = &vdev->vpaths[i];
1154                         vxge_assert(vpath->is_open);
1155                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1156                         if (status != VXGE_HW_OK)
1157                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1158                                                 "multicast, status %d", status);
1159                         vdev->all_multi_flg = 0;
1160                 }
1161         }
1162
1163
1164         if (!vdev->config.addr_learn_en) {
1165                 for (i = 0; i < vdev->no_of_vpath; i++) {
1166                         vpath = &vdev->vpaths[i];
1167                         vxge_assert(vpath->is_open);
1168
1169                         if (dev->flags & IFF_PROMISC)
1170                                 status = vxge_hw_vpath_promisc_enable(
1171                                         vpath->handle);
1172                         else
1173                                 status = vxge_hw_vpath_promisc_disable(
1174                                         vpath->handle);
1175                         if (status != VXGE_HW_OK)
1176                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1177                                         ", status %d", dev->flags&IFF_PROMISC ?
1178                                         "enable" : "disable", status);
1179                 }
1180         }
1181
1182         memset(&mac_info, 0, sizeof(struct macInfo));
1183         /* Update individual M_CAST address list */
1184         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1185                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1186                 list_head = &vdev->vpaths[0].mac_addr_list;
1187                 if ((netdev_mc_count(dev) +
1188                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1189                                 vdev->vpaths[0].max_mac_addr_cnt)
1190                         goto _set_all_mcast;
1191
1192                 /* Delete previous MC's */
1193                 for (i = 0; i < mcast_cnt; i++) {
1194                         list_for_each_safe(entry, next, list_head) {
1195                                 mac_entry = (struct vxge_mac_addrs *)entry;
1196                                 /* Copy the mac address to delete */
1197                                 mac_address = (u8 *)&mac_entry->macaddr;
1198                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1199
1200                                 if (is_multicast_ether_addr(mac_info.macaddr)) {
1201                                         for (vpath_idx = 0; vpath_idx <
1202                                                 vdev->no_of_vpath;
1203                                                 vpath_idx++) {
1204                                                 mac_info.vpath_no = vpath_idx;
1205                                                 status = vxge_del_mac_addr(
1206                                                                 vdev,
1207                                                                 &mac_info);
1208                                         }
1209                                 }
1210                         }
1211                 }
1212
1213                 /* Add new ones */
1214                 netdev_for_each_mc_addr(ha, dev) {
1215                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1216                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1217                                         vpath_idx++) {
1218                                 mac_info.vpath_no = vpath_idx;
1219                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1220                                 status = vxge_add_mac_addr(vdev, &mac_info);
1221                                 if (status != VXGE_HW_OK) {
1222                                         vxge_debug_init(VXGE_ERR,
1223                                                 "%s:%d Setting individual"
1224                                                 "multicast address failed",
1225                                                 __func__, __LINE__);
1226                                         goto _set_all_mcast;
1227                                 }
1228                         }
1229                 }
1230
1231                 return;
1232 _set_all_mcast:
1233                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1234                 /* Delete previous MC's */
1235                 for (i = 0; i < mcast_cnt; i++) {
1236                         list_for_each_safe(entry, next, list_head) {
1237                                 mac_entry = (struct vxge_mac_addrs *)entry;
1238                                 /* Copy the mac address to delete */
1239                                 mac_address = (u8 *)&mac_entry->macaddr;
1240                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1241
1242                                 if (is_multicast_ether_addr(mac_info.macaddr))
1243                                         break;
1244                         }
1245
1246                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1247                                         vpath_idx++) {
1248                                 mac_info.vpath_no = vpath_idx;
1249                                 status = vxge_del_mac_addr(vdev, &mac_info);
1250                         }
1251                 }
1252
1253                 /* Enable all multicast */
1254                 for (i = 0; i < vdev->no_of_vpath; i++) {
1255                         vpath = &vdev->vpaths[i];
1256                         vxge_assert(vpath->is_open);
1257
1258                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1259                         if (status != VXGE_HW_OK) {
1260                                 vxge_debug_init(VXGE_ERR,
1261                                         "%s:%d Enabling all multicasts failed",
1262                                          __func__, __LINE__);
1263                         }
1264                         vdev->all_multi_flg = 1;
1265                 }
1266                 dev->flags |= IFF_ALLMULTI;
1267         }
1268
1269         vxge_debug_entryexit(VXGE_TRACE,
1270                 "%s:%d  Exiting...", __func__, __LINE__);
1271 }
1272
1273 /**
1274  * vxge_set_mac_addr
1275  * @dev: pointer to the device structure
1276  *
1277  * Update entry "0" (default MAC addr)
1278  */
1279 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1280 {
1281         struct sockaddr *addr = p;
1282         struct vxgedev *vdev;
1283         struct __vxge_hw_device *hldev;
1284         enum vxge_hw_status status = VXGE_HW_OK;
1285         struct macInfo mac_info_new, mac_info_old;
1286         int vpath_idx = 0;
1287
1288         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1289
1290         vdev = netdev_priv(dev);
1291         hldev = vdev->devh;
1292
1293         if (!is_valid_ether_addr(addr->sa_data))
1294                 return -EINVAL;
1295
1296         memset(&mac_info_new, 0, sizeof(struct macInfo));
1297         memset(&mac_info_old, 0, sizeof(struct macInfo));
1298
1299         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1300                 __func__, __LINE__);
1301
1302         /* Get the old address */
1303         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1304
1305         /* Copy the new address */
1306         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1307
1308         /* First delete the old mac address from all the vpaths
1309         as we can't specify the index while adding new mac address */
1310         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1311                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1312                 if (!vpath->is_open) {
1313                         /* This can happen when this interface is added/removed
1314                         to the bonding interface. Delete this station address
1315                         from the linked list */
1316                         vxge_mac_list_del(vpath, &mac_info_old);
1317
1318                         /* Add this new address to the linked list
1319                         for later restoring */
1320                         vxge_mac_list_add(vpath, &mac_info_new);
1321
1322                         continue;
1323                 }
1324                 /* Delete the station address */
1325                 mac_info_old.vpath_no = vpath_idx;
1326                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1327         }
1328
1329         if (unlikely(!is_vxge_card_up(vdev))) {
1330                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1331                 return VXGE_HW_OK;
1332         }
1333
1334         /* Set this mac address to all the vpaths */
1335         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1336                 mac_info_new.vpath_no = vpath_idx;
1337                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1338                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1339                 if (status != VXGE_HW_OK)
1340                         return -EINVAL;
1341         }
1342
1343         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1344
1345         return status;
1346 }
1347
1348 /*
1349  * vxge_vpath_intr_enable
1350  * @vdev: pointer to vdev
1351  * @vp_id: vpath for which to enable the interrupts
1352  *
1353  * Enables the interrupts for the vpath
1354 */
1355 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1356 {
1357         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1358         int msix_id = 0;
1359         int tim_msix_id[4] = {0, 1, 0, 0};
1360         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1361
1362         vxge_hw_vpath_intr_enable(vpath->handle);
1363
1364         if (vdev->config.intr_type == INTA)
1365                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1366         else {
1367                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1368                         alarm_msix_id);
1369
1370                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1371                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1372                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1373
1374                 /* enable the alarm vector */
1375                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1376                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1377                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1378         }
1379 }
1380
1381 /*
1382  * vxge_vpath_intr_disable
1383  * @vdev: pointer to vdev
1384  * @vp_id: vpath for which to disable the interrupts
1385  *
1386  * Disables the interrupts for the vpath
1387 */
1388 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1389 {
1390         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1391         struct __vxge_hw_device *hldev;
1392         int msix_id;
1393
1394         hldev = pci_get_drvdata(vdev->pdev);
1395
1396         vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1397
1398         vxge_hw_vpath_intr_disable(vpath->handle);
1399
1400         if (vdev->config.intr_type == INTA)
1401                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1402         else {
1403                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1404                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1405                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1406
1407                 /* disable the alarm vector */
1408                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1409                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1410                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1411         }
1412 }
1413
1414 /* list all mac addresses from DA table */
1415 static enum vxge_hw_status
1416 vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac)
1417 {
1418         enum vxge_hw_status status = VXGE_HW_OK;
1419         unsigned char macmask[ETH_ALEN];
1420         unsigned char macaddr[ETH_ALEN];
1421
1422         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1423                                 macaddr, macmask);
1424         if (status != VXGE_HW_OK) {
1425                 vxge_debug_init(VXGE_ERR,
1426                         "DA config list entry failed for vpath:%d",
1427                         vpath->device_id);
1428                 return status;
1429         }
1430
1431         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1432                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1433                                 macaddr, macmask);
1434                 if (status != VXGE_HW_OK)
1435                         break;
1436         }
1437
1438         return status;
1439 }
1440
1441 /* Store all mac addresses from the list to the DA table */
1442 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1443 {
1444         enum vxge_hw_status status = VXGE_HW_OK;
1445         struct macInfo mac_info;
1446         u8 *mac_address = NULL;
1447         struct list_head *entry, *next;
1448
1449         memset(&mac_info, 0, sizeof(struct macInfo));
1450
1451         if (vpath->is_open) {
1452                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1453                         mac_address =
1454                                 (u8 *)&
1455                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1456                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1457                         ((struct vxge_mac_addrs *)entry)->state =
1458                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1459                         /* does this mac address already exist in da table? */
1460                         status = vxge_search_mac_addr_in_da_table(vpath,
1461                                 &mac_info);
1462                         if (status != VXGE_HW_OK) {
1463                                 /* Add this mac address to the DA table */
1464                                 status = vxge_hw_vpath_mac_addr_add(
1465                                         vpath->handle, mac_info.macaddr,
1466                                         mac_info.macmask,
1467                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1468                                 if (status != VXGE_HW_OK) {
1469                                         vxge_debug_init(VXGE_ERR,
1470                                             "DA add entry failed for vpath:%d",
1471                                             vpath->device_id);
1472                                         ((struct vxge_mac_addrs *)entry)->state
1473                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1474                                 }
1475                         }
1476                 }
1477         }
1478
1479         return status;
1480 }
1481
1482 /* Store all vlan ids from the list to the vid table */
1483 static enum vxge_hw_status
1484 vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1485 {
1486         enum vxge_hw_status status = VXGE_HW_OK;
1487         struct vxgedev *vdev = vpath->vdev;
1488         u16 vid;
1489
1490         if (!vpath->is_open)
1491                 return status;
1492
1493         for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID)
1494                 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1495
1496         return status;
1497 }
1498
1499 /*
1500  * vxge_reset_vpath
1501  * @vdev: pointer to vdev
1502  * @vp_id: vpath to reset
1503  *
1504  * Resets the vpath
1505 */
1506 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1507 {
1508         enum vxge_hw_status status = VXGE_HW_OK;
1509         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1510         int ret = 0;
1511
1512         /* check if device is down already */
1513         if (unlikely(!is_vxge_card_up(vdev)))
1514                 return 0;
1515
1516         /* is device reset already scheduled */
1517         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1518                 return 0;
1519
1520         if (vpath->handle) {
1521                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1522                         if (is_vxge_card_up(vdev) &&
1523                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1524                                         != VXGE_HW_OK) {
1525                                 vxge_debug_init(VXGE_ERR,
1526                                         "vxge_hw_vpath_recover_from_reset"
1527                                         "failed for vpath:%d", vp_id);
1528                                 return status;
1529                         }
1530                 } else {
1531                         vxge_debug_init(VXGE_ERR,
1532                                 "vxge_hw_vpath_reset failed for"
1533                                 "vpath:%d", vp_id);
1534                                 return status;
1535                 }
1536         } else
1537                 return VXGE_HW_FAIL;
1538
1539         vxge_restore_vpath_mac_addr(vpath);
1540         vxge_restore_vpath_vid_table(vpath);
1541
1542         /* Enable all broadcast */
1543         vxge_hw_vpath_bcast_enable(vpath->handle);
1544
1545         /* Enable all multicast */
1546         if (vdev->all_multi_flg) {
1547                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1548                 if (status != VXGE_HW_OK)
1549                         vxge_debug_init(VXGE_ERR,
1550                                 "%s:%d Enabling multicast failed",
1551                                 __func__, __LINE__);
1552         }
1553
1554         /* Enable the interrupts */
1555         vxge_vpath_intr_enable(vdev, vp_id);
1556
1557         smp_wmb();
1558
1559         /* Enable the flow of traffic through the vpath */
1560         vxge_hw_vpath_enable(vpath->handle);
1561
1562         smp_wmb();
1563         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1564         vpath->ring.last_status = VXGE_HW_OK;
1565
1566         /* Vpath reset done */
1567         clear_bit(vp_id, &vdev->vp_reset);
1568
1569         /* Start the vpath queue */
1570         if (netif_tx_queue_stopped(vpath->fifo.txq))
1571                 netif_tx_wake_queue(vpath->fifo.txq);
1572
1573         return ret;
1574 }
1575
1576 /* Configure CI */
1577 static void vxge_config_ci_for_tti_rti(struct vxgedev *vdev)
1578 {
1579         int i = 0;
1580
1581         /* Enable CI for RTI */
1582         if (vdev->config.intr_type == MSI_X) {
1583                 for (i = 0; i < vdev->no_of_vpath; i++) {
1584                         struct __vxge_hw_ring *hw_ring;
1585
1586                         hw_ring = vdev->vpaths[i].ring.handle;
1587                         vxge_hw_vpath_dynamic_rti_ci_set(hw_ring);
1588                 }
1589         }
1590
1591         /* Enable CI for TTI */
1592         for (i = 0; i < vdev->no_of_vpath; i++) {
1593                 struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle;
1594                 vxge_hw_vpath_tti_ci_set(hw_fifo);
1595                 /*
1596                  * For Inta (with or without napi), Set CI ON for only one
1597                  * vpath. (Have only one free running timer).
1598                  */
1599                 if ((vdev->config.intr_type == INTA) && (i == 0))
1600                         break;
1601         }
1602
1603         return;
1604 }
1605
1606 static int do_vxge_reset(struct vxgedev *vdev, int event)
1607 {
1608         enum vxge_hw_status status;
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                 status = vxge_reset_all_vpaths(vdev);
1712                 if (status != VXGE_HW_OK) {
1713                         vxge_debug_init(VXGE_ERR,
1714                                 "fatal: %s: can not reset vpaths",
1715                                 vdev->ndev->name);
1716                         ret = -EPERM;
1717                         goto out;
1718                 }
1719         }
1720
1721         if (event == VXGE_LL_COMPL_RESET) {
1722                 for (i = 0; i < vdev->no_of_vpath; i++)
1723                         if (vdev->vpaths[i].handle) {
1724                                 if (vxge_hw_vpath_recover_from_reset(
1725                                         vdev->vpaths[i].handle)
1726                                                 != VXGE_HW_OK) {
1727                                         vxge_debug_init(VXGE_ERR,
1728                                                 "vxge_hw_vpath_recover_"
1729                                                 "from_reset failed for vpath: "
1730                                                 "%d", i);
1731                                         ret = -EPERM;
1732                                         goto out;
1733                                 }
1734                                 } else {
1735                                         vxge_debug_init(VXGE_ERR,
1736                                         "vxge_hw_vpath_reset failed for "
1737                                                 "vpath:%d", i);
1738                                         ret = -EPERM;
1739                                         goto out;
1740                                 }
1741         }
1742
1743         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1744                 /* Reprogram the DA table with populated mac addresses */
1745                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1746                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1747                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1748                 }
1749
1750                 /* enable vpath interrupts */
1751                 for (i = 0; i < vdev->no_of_vpath; i++)
1752                         vxge_vpath_intr_enable(vdev, i);
1753
1754                 vxge_hw_device_intr_enable(vdev->devh);
1755
1756                 smp_wmb();
1757
1758                 /* Indicate card up */
1759                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1760
1761                 /* Get the traffic to flow through the vpaths */
1762                 for (i = 0; i < vdev->no_of_vpath; i++) {
1763                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1764                         smp_wmb();
1765                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1766                 }
1767
1768                 netif_tx_wake_all_queues(vdev->ndev);
1769         }
1770
1771         /* configure CI */
1772         vxge_config_ci_for_tti_rti(vdev);
1773
1774 out:
1775         vxge_debug_entryexit(VXGE_TRACE,
1776                 "%s:%d  Exiting...", __func__, __LINE__);
1777
1778         /* Indicate reset done */
1779         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1780                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1781         return ret;
1782 }
1783
1784 /*
1785  * vxge_reset
1786  * @vdev: pointer to ll device
1787  *
1788  * driver may reset the chip on events of serr, eccerr, etc
1789  */
1790 static void vxge_reset(struct work_struct *work)
1791 {
1792         struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task);
1793
1794         if (!netif_running(vdev->ndev))
1795                 return;
1796
1797         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1798 }
1799
1800 /**
1801  * vxge_poll - Receive handler when Receive Polling is used.
1802  * @dev: pointer to the device structure.
1803  * @budget: Number of packets budgeted to be processed in this iteration.
1804  *
1805  * This function comes into picture only if Receive side is being handled
1806  * through polling (called NAPI in linux). It mostly does what the normal
1807  * Rx interrupt handler does in terms of descriptor and packet processing
1808  * but not in an interrupt context. Also it will process a specified number
1809  * of packets at most in one iteration. This value is passed down by the
1810  * kernel as the function argument 'budget'.
1811  */
1812 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1813 {
1814         struct vxge_ring *ring = container_of(napi, struct vxge_ring, napi);
1815         int pkts_processed;
1816         int budget_org = budget;
1817
1818         ring->budget = budget;
1819         ring->pkts_processed = 0;
1820         vxge_hw_vpath_poll_rx(ring->handle);
1821         pkts_processed = ring->pkts_processed;
1822
1823         if (ring->pkts_processed < budget_org) {
1824                 napi_complete(napi);
1825
1826                 /* Re enable the Rx interrupts for the vpath */
1827                 vxge_hw_channel_msix_unmask(
1828                                 (struct __vxge_hw_channel *)ring->handle,
1829                                 ring->rx_vector_no);
1830                 mmiowb();
1831         }
1832
1833         /* We are copying and returning the local variable, in case if after
1834          * clearing the msix interrupt above, if the interrupt fires right
1835          * away which can preempt this NAPI thread */
1836         return pkts_processed;
1837 }
1838
1839 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1840 {
1841         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1842         int pkts_processed = 0;
1843         int i;
1844         int budget_org = budget;
1845         struct vxge_ring *ring;
1846
1847         struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1848
1849         for (i = 0; i < vdev->no_of_vpath; i++) {
1850                 ring = &vdev->vpaths[i].ring;
1851                 ring->budget = budget;
1852                 ring->pkts_processed = 0;
1853                 vxge_hw_vpath_poll_rx(ring->handle);
1854                 pkts_processed += ring->pkts_processed;
1855                 budget -= ring->pkts_processed;
1856                 if (budget <= 0)
1857                         break;
1858         }
1859
1860         VXGE_COMPLETE_ALL_TX(vdev);
1861
1862         if (pkts_processed < budget_org) {
1863                 napi_complete(napi);
1864                 /* Re enable the Rx interrupts for the ring */
1865                 vxge_hw_device_unmask_all(hldev);
1866                 vxge_hw_device_flush_io(hldev);
1867         }
1868
1869         return pkts_processed;
1870 }
1871
1872 #ifdef CONFIG_NET_POLL_CONTROLLER
1873 /**
1874  * vxge_netpoll - netpoll event handler entry point
1875  * @dev : pointer to the device structure.
1876  * Description:
1877  *      This function will be called by upper layer to check for events on the
1878  * interface in situations where interrupts are disabled. It is used for
1879  * specific in-kernel networking tasks, such as remote consoles and kernel
1880  * debugging over the network (example netdump in RedHat).
1881  */
1882 static void vxge_netpoll(struct net_device *dev)
1883 {
1884         struct __vxge_hw_device *hldev;
1885         struct vxgedev *vdev;
1886
1887         vdev = netdev_priv(dev);
1888         hldev = pci_get_drvdata(vdev->pdev);
1889
1890         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1891
1892         if (pci_channel_offline(vdev->pdev))
1893                 return;
1894
1895         disable_irq(dev->irq);
1896         vxge_hw_device_clear_tx_rx(hldev);
1897
1898         vxge_hw_device_clear_tx_rx(hldev);
1899         VXGE_COMPLETE_ALL_RX(vdev);
1900         VXGE_COMPLETE_ALL_TX(vdev);
1901
1902         enable_irq(dev->irq);
1903
1904         vxge_debug_entryexit(VXGE_TRACE,
1905                 "%s:%d  Exiting...", __func__, __LINE__);
1906 }
1907 #endif
1908
1909 /* RTH configuration */
1910 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1911 {
1912         enum vxge_hw_status status = VXGE_HW_OK;
1913         struct vxge_hw_rth_hash_types hash_types;
1914         u8 itable[256] = {0}; /* indirection table */
1915         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1916         int index;
1917
1918         /*
1919          * Filling
1920          *      - itable with bucket numbers
1921          *      - mtable with bucket-to-vpath mapping
1922          */
1923         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1924                 itable[index] = index;
1925                 mtable[index] = index % vdev->no_of_vpath;
1926         }
1927
1928         /* set indirection table, bucket-to-vpath mapping */
1929         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1930                                                 vdev->no_of_vpath,
1931                                                 mtable, itable,
1932                                                 vdev->config.rth_bkt_sz);
1933         if (status != VXGE_HW_OK) {
1934                 vxge_debug_init(VXGE_ERR,
1935                         "RTH indirection table configuration failed "
1936                         "for vpath:%d", vdev->vpaths[0].device_id);
1937                 return status;
1938         }
1939
1940         /* Fill RTH hash types */
1941         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1942         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1943         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1944         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1945         hash_types.hash_type_tcpipv6ex_en =
1946                                         vdev->config.rth_hash_type_tcpipv6ex;
1947         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1948
1949         /*
1950          * Because the itable_set() method uses the active_table field
1951          * for the target virtual path the RTH config should be updated
1952          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1953          * when steering frames.
1954          */
1955          for (index = 0; index < vdev->no_of_vpath; index++) {
1956                 status = vxge_hw_vpath_rts_rth_set(
1957                                 vdev->vpaths[index].handle,
1958                                 vdev->config.rth_algorithm,
1959                                 &hash_types,
1960                                 vdev->config.rth_bkt_sz);
1961                  if (status != VXGE_HW_OK) {
1962                         vxge_debug_init(VXGE_ERR,
1963                                 "RTH configuration failed for vpath:%d",
1964                                 vdev->vpaths[index].device_id);
1965                         return status;
1966                  }
1967          }
1968
1969         return status;
1970 }
1971
1972 /* reset vpaths */
1973 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1974 {
1975         enum vxge_hw_status status = VXGE_HW_OK;
1976         struct vxge_vpath *vpath;
1977         int i;
1978
1979         for (i = 0; i < vdev->no_of_vpath; i++) {
1980                 vpath = &vdev->vpaths[i];
1981                 if (vpath->handle) {
1982                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1983                                 if (is_vxge_card_up(vdev) &&
1984                                         vxge_hw_vpath_recover_from_reset(
1985                                                 vpath->handle) != VXGE_HW_OK) {
1986                                         vxge_debug_init(VXGE_ERR,
1987                                                 "vxge_hw_vpath_recover_"
1988                                                 "from_reset failed for vpath: "
1989                                                 "%d", i);
1990                                         return status;
1991                                 }
1992                         } else {
1993                                 vxge_debug_init(VXGE_ERR,
1994                                         "vxge_hw_vpath_reset failed for "
1995                                         "vpath:%d", i);
1996                                         return status;
1997                         }
1998                 }
1999         }
2000
2001         return status;
2002 }
2003
2004 /* close vpaths */
2005 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
2006 {
2007         struct vxge_vpath *vpath;
2008         int i;
2009
2010         for (i = index; i < vdev->no_of_vpath; i++) {
2011                 vpath = &vdev->vpaths[i];
2012
2013                 if (vpath->handle && vpath->is_open) {
2014                         vxge_hw_vpath_close(vpath->handle);
2015                         vdev->stats.vpaths_open--;
2016                 }
2017                 vpath->is_open = 0;
2018                 vpath->handle = NULL;
2019         }
2020 }
2021
2022 /* open vpaths */
2023 static int vxge_open_vpaths(struct vxgedev *vdev)
2024 {
2025         struct vxge_hw_vpath_attr attr;
2026         enum vxge_hw_status status;
2027         struct vxge_vpath *vpath;
2028         u32 vp_id = 0;
2029         int i;
2030
2031         for (i = 0; i < vdev->no_of_vpath; i++) {
2032                 vpath = &vdev->vpaths[i];
2033                 vxge_assert(vpath->is_configured);
2034
2035                 if (!vdev->titan1) {
2036                         struct vxge_hw_vp_config *vcfg;
2037                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2038
2039                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2040                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2041                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2042                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2043                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2044                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2045                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2046                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2047                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2048                 }
2049
2050                 attr.vp_id = vpath->device_id;
2051                 attr.fifo_attr.callback = vxge_xmit_compl;
2052                 attr.fifo_attr.txdl_term = vxge_tx_term;
2053                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2054                 attr.fifo_attr.userdata = &vpath->fifo;
2055
2056                 attr.ring_attr.callback = vxge_rx_1b_compl;
2057                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2058                 attr.ring_attr.rxd_term = vxge_rx_term;
2059                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2060                 attr.ring_attr.userdata = &vpath->ring;
2061
2062                 vpath->ring.ndev = vdev->ndev;
2063                 vpath->ring.pdev = vdev->pdev;
2064
2065                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2066                 if (status == VXGE_HW_OK) {
2067                         vpath->fifo.handle =
2068                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2069                         vpath->ring.handle =
2070                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2071                         vpath->fifo.tx_steering_type =
2072                                 vdev->config.tx_steering_type;
2073                         vpath->fifo.ndev = vdev->ndev;
2074                         vpath->fifo.pdev = vdev->pdev;
2075                         if (vdev->config.tx_steering_type)
2076                                 vpath->fifo.txq =
2077                                         netdev_get_tx_queue(vdev->ndev, i);
2078                         else
2079                                 vpath->fifo.txq =
2080                                         netdev_get_tx_queue(vdev->ndev, 0);
2081                         vpath->fifo.indicate_max_pkts =
2082                                 vdev->config.fifo_indicate_max_pkts;
2083                         vpath->fifo.tx_vector_no = 0;
2084                         vpath->ring.rx_vector_no = 0;
2085                         vpath->ring.rx_hwts = vdev->rx_hwts;
2086                         vpath->is_open = 1;
2087                         vdev->vp_handles[i] = vpath->handle;
2088                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2089                         vdev->stats.vpaths_open++;
2090                 } else {
2091                         vdev->stats.vpath_open_fail++;
2092                         vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2093                                         "open with status: %d",
2094                                         vdev->ndev->name, vpath->device_id,
2095                                         status);
2096                         vxge_close_vpaths(vdev, 0);
2097                         return -EPERM;
2098                 }
2099
2100                 vp_id = vpath->handle->vpath->vp_id;
2101                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2102         }
2103
2104         return VXGE_HW_OK;
2105 }
2106
2107 /**
2108  *  adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing
2109  *  if the interrupts are not within a range
2110  *  @fifo: pointer to transmit fifo structure
2111  *  Description: The function changes boundary timer and restriction timer
2112  *  value depends on the traffic
2113  *  Return Value: None
2114  */
2115 static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo)
2116 {
2117         fifo->interrupt_count++;
2118         if (jiffies > fifo->jiffies + HZ / 100) {
2119                 struct __vxge_hw_fifo *hw_fifo = fifo->handle;
2120
2121                 fifo->jiffies = jiffies;
2122                 if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT &&
2123                     hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
2124                         hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
2125                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2126                 } else if (hw_fifo->rtimer != 0) {
2127                         hw_fifo->rtimer = 0;
2128                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2129                 }
2130                 fifo->interrupt_count = 0;
2131         }
2132 }
2133
2134 /**
2135  *  adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing
2136  *  if the interrupts are not within a range
2137  *  @ring: pointer to receive ring structure
2138  *  Description: The function increases of decreases the packet counts within
2139  *  the ranges of traffic utilization, if the interrupts due to this ring are
2140  *  not within a fixed range.
2141  *  Return Value: Nothing
2142  */
2143 static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring)
2144 {
2145         ring->interrupt_count++;
2146         if (jiffies > ring->jiffies + HZ / 100) {
2147                 struct __vxge_hw_ring *hw_ring = ring->handle;
2148
2149                 ring->jiffies = jiffies;
2150                 if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT &&
2151                     hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
2152                         hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
2153                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2154                 } else if (hw_ring->rtimer != 0) {
2155                         hw_ring->rtimer = 0;
2156                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2157                 }
2158                 ring->interrupt_count = 0;
2159         }
2160 }
2161
2162 /*
2163  *  vxge_isr_napi
2164  *  @irq: the irq of the device.
2165  *  @dev_id: a void pointer to the hldev structure of the Titan device
2166  *  @ptregs: pointer to the registers pushed on the stack.
2167  *
2168  *  This function is the ISR handler of the device when napi is enabled. It
2169  *  identifies the reason for the interrupt and calls the relevant service
2170  *  routines.
2171  */
2172 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2173 {
2174         struct net_device *dev;
2175         struct __vxge_hw_device *hldev;
2176         u64 reason;
2177         enum vxge_hw_status status;
2178         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2179
2180         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2181
2182         dev = vdev->ndev;
2183         hldev = pci_get_drvdata(vdev->pdev);
2184
2185         if (pci_channel_offline(vdev->pdev))
2186                 return IRQ_NONE;
2187
2188         if (unlikely(!is_vxge_card_up(vdev)))
2189                 return IRQ_HANDLED;
2190
2191         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2192         if (status == VXGE_HW_OK) {
2193                 vxge_hw_device_mask_all(hldev);
2194
2195                 if (reason &
2196                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2197                         vdev->vpaths_deployed >>
2198                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2199
2200                         vxge_hw_device_clear_tx_rx(hldev);
2201                         napi_schedule(&vdev->napi);
2202                         vxge_debug_intr(VXGE_TRACE,
2203                                 "%s:%d  Exiting...", __func__, __LINE__);
2204                         return IRQ_HANDLED;
2205                 } else
2206                         vxge_hw_device_unmask_all(hldev);
2207         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2208                 (status == VXGE_HW_ERR_CRITICAL) ||
2209                 (status == VXGE_HW_ERR_FIFO))) {
2210                 vxge_hw_device_mask_all(hldev);
2211                 vxge_hw_device_flush_io(hldev);
2212                 return IRQ_HANDLED;
2213         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2214                 return IRQ_HANDLED;
2215
2216         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2217         return IRQ_NONE;
2218 }
2219
2220 #ifdef CONFIG_PCI_MSI
2221
2222 static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
2223 {
2224         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2225
2226         adaptive_coalesce_tx_interrupts(fifo);
2227
2228         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle,
2229                                   fifo->tx_vector_no);
2230
2231         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle,
2232                                    fifo->tx_vector_no);
2233
2234         VXGE_COMPLETE_VPATH_TX(fifo);
2235
2236         vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
2237                                     fifo->tx_vector_no);
2238
2239         mmiowb();
2240
2241         return IRQ_HANDLED;
2242 }
2243
2244 static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id)
2245 {
2246         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2247
2248         adaptive_coalesce_rx_interrupts(ring);
2249
2250         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2251                                   ring->rx_vector_no);
2252
2253         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle,
2254                                    ring->rx_vector_no);
2255
2256         napi_schedule(&ring->napi);
2257         return IRQ_HANDLED;
2258 }
2259
2260 static irqreturn_t
2261 vxge_alarm_msix_handle(int irq, void *dev_id)
2262 {
2263         int i;
2264         enum vxge_hw_status status;
2265         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2266         struct vxgedev *vdev = vpath->vdev;
2267         int msix_id = (vpath->handle->vpath->vp_id *
2268                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2269
2270         for (i = 0; i < vdev->no_of_vpath; i++) {
2271                 /* Reduce the chance of losing alarm interrupts by masking
2272                  * the vector. A pending bit will be set if an alarm is
2273                  * generated and on unmask the interrupt will be fired.
2274                  */
2275                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2276                 vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
2277                 mmiowb();
2278
2279                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2280                         vdev->exec_mode);
2281                 if (status == VXGE_HW_OK) {
2282                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2283                                                   msix_id);
2284                         mmiowb();
2285                         continue;
2286                 }
2287                 vxge_debug_intr(VXGE_ERR,
2288                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2289                         VXGE_DRIVER_NAME, status);
2290         }
2291         return IRQ_HANDLED;
2292 }
2293
2294 static int vxge_alloc_msix(struct vxgedev *vdev)
2295 {
2296         int j, i, ret = 0;
2297         int msix_intr_vect = 0, temp;
2298         vdev->intr_cnt = 0;
2299
2300 start:
2301         /* Tx/Rx MSIX Vectors count */
2302         vdev->intr_cnt = vdev->no_of_vpath * 2;
2303
2304         /* Alarm MSIX Vectors count */
2305         vdev->intr_cnt++;
2306
2307         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2308                                 GFP_KERNEL);
2309         if (!vdev->entries) {
2310                 vxge_debug_init(VXGE_ERR,
2311                         "%s: memory allocation failed",
2312                         VXGE_DRIVER_NAME);
2313                 ret = -ENOMEM;
2314                 goto alloc_entries_failed;
2315         }
2316
2317         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2318                                      sizeof(struct vxge_msix_entry),
2319                                      GFP_KERNEL);
2320         if (!vdev->vxge_entries) {
2321                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2322                         VXGE_DRIVER_NAME);
2323                 ret = -ENOMEM;
2324                 goto alloc_vxge_entries_failed;
2325         }
2326
2327         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2328
2329                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2330
2331                 /* Initialize the fifo vector */
2332                 vdev->entries[j].entry = msix_intr_vect;
2333                 vdev->vxge_entries[j].entry = msix_intr_vect;
2334                 vdev->vxge_entries[j].in_use = 0;
2335                 j++;
2336
2337                 /* Initialize the ring vector */
2338                 vdev->entries[j].entry = msix_intr_vect + 1;
2339                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2340                 vdev->vxge_entries[j].in_use = 0;
2341                 j++;
2342         }
2343
2344         /* Initialize the alarm vector */
2345         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2346         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2347         vdev->vxge_entries[j].in_use = 0;
2348
2349         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2350         if (ret > 0) {
2351                 vxge_debug_init(VXGE_ERR,
2352                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2353                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2354                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2355                         ret = -ENODEV;
2356                         goto enable_msix_failed;
2357                 }
2358
2359                 kfree(vdev->entries);
2360                 kfree(vdev->vxge_entries);
2361                 vdev->entries = NULL;
2362                 vdev->vxge_entries = NULL;
2363                 /* Try with less no of vector by reducing no of vpaths count */
2364                 temp = (ret - 1)/2;
2365                 vxge_close_vpaths(vdev, temp);
2366                 vdev->no_of_vpath = temp;
2367                 goto start;
2368         } else if (ret < 0) {
2369                 ret = -ENODEV;
2370                 goto enable_msix_failed;
2371         }
2372         return 0;
2373
2374 enable_msix_failed:
2375         kfree(vdev->vxge_entries);
2376 alloc_vxge_entries_failed:
2377         kfree(vdev->entries);
2378 alloc_entries_failed:
2379         return ret;
2380 }
2381
2382 static int vxge_enable_msix(struct vxgedev *vdev)
2383 {
2384
2385         int i, ret = 0;
2386         /* 0 - Tx, 1 - Rx  */
2387         int tim_msix_id[4] = {0, 1, 0, 0};
2388
2389         vdev->intr_cnt = 0;
2390
2391         /* allocate msix vectors */
2392         ret = vxge_alloc_msix(vdev);
2393         if (!ret) {
2394                 for (i = 0; i < vdev->no_of_vpath; i++) {
2395                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2396
2397                         /* If fifo or ring are not enabled, the MSIX vector for
2398                          * it should be set to 0.
2399                          */
2400                         vpath->ring.rx_vector_no = (vpath->device_id *
2401                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2402
2403                         vpath->fifo.tx_vector_no = (vpath->device_id *
2404                                                 VXGE_HW_VPATH_MSIX_ACTIVE);
2405
2406                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2407                                                VXGE_ALARM_MSIX_ID);
2408                 }
2409         }
2410
2411         return ret;
2412 }
2413
2414 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2415 {
2416         int intr_cnt;
2417
2418         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2419                 intr_cnt++) {
2420                 if (vdev->vxge_entries[intr_cnt].in_use) {
2421                         synchronize_irq(vdev->entries[intr_cnt].vector);
2422                         free_irq(vdev->entries[intr_cnt].vector,
2423                                 vdev->vxge_entries[intr_cnt].arg);
2424                         vdev->vxge_entries[intr_cnt].in_use = 0;
2425                 }
2426         }
2427
2428         kfree(vdev->entries);
2429         kfree(vdev->vxge_entries);
2430         vdev->entries = NULL;
2431         vdev->vxge_entries = NULL;
2432
2433         if (vdev->config.intr_type == MSI_X)
2434                 pci_disable_msix(vdev->pdev);
2435 }
2436 #endif
2437
2438 static void vxge_rem_isr(struct vxgedev *vdev)
2439 {
2440         struct __vxge_hw_device *hldev;
2441         hldev = pci_get_drvdata(vdev->pdev);
2442
2443 #ifdef CONFIG_PCI_MSI
2444         if (vdev->config.intr_type == MSI_X) {
2445                 vxge_rem_msix_isr(vdev);
2446         } else
2447 #endif
2448         if (vdev->config.intr_type == INTA) {
2449                         synchronize_irq(vdev->pdev->irq);
2450                         free_irq(vdev->pdev->irq, vdev);
2451         }
2452 }
2453
2454 static int vxge_add_isr(struct vxgedev *vdev)
2455 {
2456         int ret = 0;
2457 #ifdef CONFIG_PCI_MSI
2458         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2459         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2460
2461         if (vdev->config.intr_type == MSI_X)
2462                 ret = vxge_enable_msix(vdev);
2463
2464         if (ret) {
2465                 vxge_debug_init(VXGE_ERR,
2466                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2467                 vxge_debug_init(VXGE_ERR,
2468                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2469                 vdev->config.intr_type = INTA;
2470         }
2471
2472         if (vdev->config.intr_type == MSI_X) {
2473                 for (intr_idx = 0;
2474                      intr_idx < (vdev->no_of_vpath *
2475                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2476
2477                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2478                         irq_req = 0;
2479
2480                         switch (msix_idx) {
2481                         case 0:
2482                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2483                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2484                                         vdev->ndev->name,
2485                                         vdev->entries[intr_cnt].entry,
2486                                         pci_fun, vp_idx);
2487                                 ret = request_irq(
2488                                     vdev->entries[intr_cnt].vector,
2489                                         vxge_tx_msix_handle, 0,
2490                                         vdev->desc[intr_cnt],
2491                                         &vdev->vpaths[vp_idx].fifo);
2492                                         vdev->vxge_entries[intr_cnt].arg =
2493                                                 &vdev->vpaths[vp_idx].fifo;
2494                                 irq_req = 1;
2495                                 break;
2496                         case 1:
2497                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2498                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2499                                         vdev->ndev->name,
2500                                         vdev->entries[intr_cnt].entry,
2501                                         pci_fun, vp_idx);
2502                                 ret = request_irq(
2503                                     vdev->entries[intr_cnt].vector,
2504                                         vxge_rx_msix_napi_handle,
2505                                         0,
2506                                         vdev->desc[intr_cnt],
2507                                         &vdev->vpaths[vp_idx].ring);
2508                                         vdev->vxge_entries[intr_cnt].arg =
2509                                                 &vdev->vpaths[vp_idx].ring;
2510                                 irq_req = 1;
2511                                 break;
2512                         }
2513
2514                         if (ret) {
2515                                 vxge_debug_init(VXGE_ERR,
2516                                         "%s: MSIX - %d  Registration failed",
2517                                         vdev->ndev->name, intr_cnt);
2518                                 vxge_rem_msix_isr(vdev);
2519                                 vdev->config.intr_type = INTA;
2520                                 vxge_debug_init(VXGE_ERR,
2521                                         "%s: Defaulting to INTA"
2522                                         , vdev->ndev->name);
2523                                         goto INTA_MODE;
2524                         }
2525
2526                         if (irq_req) {
2527                                 /* We requested for this msix interrupt */
2528                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2529                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2530                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2531                                 vxge_hw_vpath_msix_unmask(
2532                                         vdev->vpaths[vp_idx].handle,
2533                                         msix_idx);
2534                                 intr_cnt++;
2535                         }
2536
2537                         /* Point to next vpath handler */
2538                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2539                             (vp_idx < (vdev->no_of_vpath - 1)))
2540                                 vp_idx++;
2541                 }
2542
2543                 intr_cnt = vdev->no_of_vpath * 2;
2544                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2545                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2546                         vdev->ndev->name,
2547                         vdev->entries[intr_cnt].entry,
2548                         pci_fun);
2549                 /* For Alarm interrupts */
2550                 ret = request_irq(vdev->entries[intr_cnt].vector,
2551                                         vxge_alarm_msix_handle, 0,
2552                                         vdev->desc[intr_cnt],
2553                                         &vdev->vpaths[0]);
2554                 if (ret) {
2555                         vxge_debug_init(VXGE_ERR,
2556                                 "%s: MSIX - %d Registration failed",
2557                                 vdev->ndev->name, intr_cnt);
2558                         vxge_rem_msix_isr(vdev);
2559                         vdev->config.intr_type = INTA;
2560                         vxge_debug_init(VXGE_ERR,
2561                                 "%s: Defaulting to INTA",
2562                                 vdev->ndev->name);
2563                                 goto INTA_MODE;
2564                 }
2565
2566                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2567                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2568                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2569                                         msix_idx);
2570                 vdev->vxge_entries[intr_cnt].in_use = 1;
2571                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2572         }
2573 INTA_MODE:
2574 #endif
2575
2576         if (vdev->config.intr_type == INTA) {
2577                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2578                         "%s:vxge:INTA", vdev->ndev->name);
2579                 vxge_hw_device_set_intr_type(vdev->devh,
2580                         VXGE_HW_INTR_MODE_IRQLINE);
2581
2582                 vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle);
2583
2584                 ret = request_irq((int) vdev->pdev->irq,
2585                         vxge_isr_napi,
2586                         IRQF_SHARED, vdev->desc[0], vdev);
2587                 if (ret) {
2588                         vxge_debug_init(VXGE_ERR,
2589                                 "%s %s-%d: ISR registration failed",
2590                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2591                         return -ENODEV;
2592                 }
2593                 vxge_debug_init(VXGE_TRACE,
2594                         "new %s-%d line allocated",
2595                         "IRQ", vdev->pdev->irq);
2596         }
2597
2598         return VXGE_HW_OK;
2599 }
2600
2601 static void vxge_poll_vp_reset(unsigned long data)
2602 {
2603         struct vxgedev *vdev = (struct vxgedev *)data;
2604         int i, j = 0;
2605
2606         for (i = 0; i < vdev->no_of_vpath; i++) {
2607                 if (test_bit(i, &vdev->vp_reset)) {
2608                         vxge_reset_vpath(vdev, i);
2609                         j++;
2610                 }
2611         }
2612         if (j && (vdev->config.intr_type != MSI_X)) {
2613                 vxge_hw_device_unmask_all(vdev->devh);
2614                 vxge_hw_device_flush_io(vdev->devh);
2615         }
2616
2617         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2618 }
2619
2620 static void vxge_poll_vp_lockup(unsigned long data)
2621 {
2622         struct vxgedev *vdev = (struct vxgedev *)data;
2623         enum vxge_hw_status status = VXGE_HW_OK;
2624         struct vxge_vpath *vpath;
2625         struct vxge_ring *ring;
2626         int i;
2627         unsigned long rx_frms;
2628
2629         for (i = 0; i < vdev->no_of_vpath; i++) {
2630                 ring = &vdev->vpaths[i].ring;
2631
2632                 /* Truncated to machine word size number of frames */
2633                 rx_frms = ACCESS_ONCE(ring->stats.rx_frms);
2634
2635                 /* Did this vpath received any packets */
2636                 if (ring->stats.prev_rx_frms == rx_frms) {
2637                         status = vxge_hw_vpath_check_leak(ring->handle);
2638
2639                         /* Did it received any packets last time */
2640                         if ((VXGE_HW_FAIL == status) &&
2641                                 (VXGE_HW_FAIL == ring->last_status)) {
2642
2643                                 /* schedule vpath reset */
2644                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2645                                         vpath = &vdev->vpaths[i];
2646
2647                                         /* disable interrupts for this vpath */
2648                                         vxge_vpath_intr_disable(vdev, i);
2649
2650                                         /* stop the queue for this vpath */
2651                                         netif_tx_stop_queue(vpath->fifo.txq);
2652                                         continue;
2653                                 }
2654                         }
2655                 }
2656                 ring->stats.prev_rx_frms = rx_frms;
2657                 ring->last_status = status;
2658         }
2659
2660         /* Check every 1 milli second */
2661         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2662 }
2663
2664 static u32 vxge_fix_features(struct net_device *dev, u32 features)
2665 {
2666         u32 changed = dev->features ^ features;
2667
2668         /* Enabling RTH requires some of the logic in vxge_device_register and a
2669          * vpath reset.  Due to these restrictions, only allow modification
2670          * while the interface is down.
2671          */
2672         if ((changed & NETIF_F_RXHASH) && netif_running(dev))
2673                 features ^= NETIF_F_RXHASH;
2674
2675         return features;
2676 }
2677
2678 static int vxge_set_features(struct net_device *dev, u32 features)
2679 {
2680         struct vxgedev *vdev = netdev_priv(dev);
2681         u32 changed = dev->features ^ features;
2682
2683         if (!(changed & NETIF_F_RXHASH))
2684                 return 0;
2685
2686         /* !netif_running() ensured by vxge_fix_features() */
2687
2688         vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH);
2689         if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) {
2690                 dev->features = features ^ NETIF_F_RXHASH;
2691                 vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH);
2692                 return -EIO;
2693         }
2694
2695         return 0;
2696 }
2697
2698 /**
2699  * vxge_open
2700  * @dev: pointer to the device structure.
2701  *
2702  * This function is the open entry point of the driver. It mainly calls a
2703  * function to allocate Rx buffers and inserts them into the buffer
2704  * descriptors and then enables the Rx part of the NIC.
2705  * Return value: '0' on success and an appropriate (-)ve integer as
2706  * defined in errno.h file on failure.
2707  */
2708 static int vxge_open(struct net_device *dev)
2709 {
2710         enum vxge_hw_status status;
2711         struct vxgedev *vdev;
2712         struct __vxge_hw_device *hldev;
2713         struct vxge_vpath *vpath;
2714         int ret = 0;
2715         int i;
2716         u64 val64, function_mode;
2717
2718         vxge_debug_entryexit(VXGE_TRACE,
2719                 "%s: %s:%d", dev->name, __func__, __LINE__);
2720
2721         vdev = netdev_priv(dev);
2722         hldev = pci_get_drvdata(vdev->pdev);
2723         function_mode = vdev->config.device_hw_info.function_mode;
2724
2725         /* make sure you have link off by default every time Nic is
2726          * initialized */
2727         netif_carrier_off(dev);
2728
2729         /* Open VPATHs */
2730         status = vxge_open_vpaths(vdev);
2731         if (status != VXGE_HW_OK) {
2732                 vxge_debug_init(VXGE_ERR,
2733                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2734                 ret = -EPERM;
2735                 goto out0;
2736         }
2737
2738         vdev->mtu = dev->mtu;
2739
2740         status = vxge_add_isr(vdev);
2741         if (status != VXGE_HW_OK) {
2742                 vxge_debug_init(VXGE_ERR,
2743                         "%s: fatal: ISR add failed", dev->name);
2744                 ret = -EPERM;
2745                 goto out1;
2746         }
2747
2748         if (vdev->config.intr_type != MSI_X) {
2749                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2750                         vdev->config.napi_weight);
2751                 napi_enable(&vdev->napi);
2752                 for (i = 0; i < vdev->no_of_vpath; i++) {
2753                         vpath = &vdev->vpaths[i];
2754                         vpath->ring.napi_p = &vdev->napi;
2755                 }
2756         } else {
2757                 for (i = 0; i < vdev->no_of_vpath; i++) {
2758                         vpath = &vdev->vpaths[i];
2759                         netif_napi_add(dev, &vpath->ring.napi,
2760                             vxge_poll_msix, vdev->config.napi_weight);
2761                         napi_enable(&vpath->ring.napi);
2762                         vpath->ring.napi_p = &vpath->ring.napi;
2763                 }
2764         }
2765
2766         /* configure RTH */
2767         if (vdev->config.rth_steering) {
2768                 status = vxge_rth_configure(vdev);
2769                 if (status != VXGE_HW_OK) {
2770                         vxge_debug_init(VXGE_ERR,
2771                                 "%s: fatal: RTH configuration failed",
2772                                 dev->name);
2773                         ret = -EPERM;
2774                         goto out2;
2775                 }
2776         }
2777         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2778                hldev->config.rth_en ? "enabled" : "disabled");
2779
2780         for (i = 0; i < vdev->no_of_vpath; i++) {
2781                 vpath = &vdev->vpaths[i];
2782
2783                 /* set initial mtu before enabling the device */
2784                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2785                 if (status != VXGE_HW_OK) {
2786                         vxge_debug_init(VXGE_ERR,
2787                                 "%s: fatal: can not set new MTU", dev->name);
2788                         ret = -EPERM;
2789                         goto out2;
2790                 }
2791         }
2792
2793         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2794         vxge_debug_init(vdev->level_trace,
2795                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2796         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2797
2798         /* Restore the DA, VID table and also multicast and promiscuous mode
2799          * states
2800          */
2801         if (vdev->all_multi_flg) {
2802                 for (i = 0; i < vdev->no_of_vpath; i++) {
2803                         vpath = &vdev->vpaths[i];
2804                         vxge_restore_vpath_mac_addr(vpath);
2805                         vxge_restore_vpath_vid_table(vpath);
2806
2807                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2808                         if (status != VXGE_HW_OK)
2809                                 vxge_debug_init(VXGE_ERR,
2810                                         "%s:%d Enabling multicast failed",
2811                                         __func__, __LINE__);
2812                 }
2813         }
2814
2815         /* Enable vpath to sniff all unicast/multicast traffic that not
2816          * addressed to them. We allow promiscuous mode for PF only
2817          */
2818
2819         val64 = 0;
2820         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2821                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2822
2823         vxge_hw_mgmt_reg_write(vdev->devh,
2824                 vxge_hw_mgmt_reg_type_mrpcim,
2825                 0,
2826                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2827                         rxmac_authorize_all_addr),
2828                 val64);
2829
2830         vxge_hw_mgmt_reg_write(vdev->devh,
2831                 vxge_hw_mgmt_reg_type_mrpcim,
2832                 0,
2833                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2834                         rxmac_authorize_all_vid),
2835                 val64);
2836
2837         vxge_set_multicast(dev);
2838
2839         /* Enabling Bcast and mcast for all vpath */
2840         for (i = 0; i < vdev->no_of_vpath; i++) {
2841                 vpath = &vdev->vpaths[i];
2842                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2843                 if (status != VXGE_HW_OK)
2844                         vxge_debug_init(VXGE_ERR,
2845                                 "%s : Can not enable bcast for vpath "
2846                                 "id %d", dev->name, i);
2847                 if (vdev->config.addr_learn_en) {
2848                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2849                         if (status != VXGE_HW_OK)
2850                                 vxge_debug_init(VXGE_ERR,
2851                                         "%s : Can not enable mcast for vpath "
2852                                         "id %d", dev->name, i);
2853                 }
2854         }
2855
2856         vxge_hw_device_setpause_data(vdev->devh, 0,
2857                 vdev->config.tx_pause_enable,
2858                 vdev->config.rx_pause_enable);
2859
2860         if (vdev->vp_reset_timer.function == NULL)
2861                 vxge_os_timer(vdev->vp_reset_timer,
2862                         vxge_poll_vp_reset, vdev, (HZ/2));
2863
2864         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2865         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2866                 vxge_os_timer(vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev,
2867                               HZ / 2);
2868
2869         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2870
2871         smp_wmb();
2872
2873         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2874                 netif_carrier_on(vdev->ndev);
2875                 netdev_notice(vdev->ndev, "Link Up\n");
2876                 vdev->stats.link_up++;
2877         }
2878
2879         vxge_hw_device_intr_enable(vdev->devh);
2880
2881         smp_wmb();
2882
2883         for (i = 0; i < vdev->no_of_vpath; i++) {
2884                 vpath = &vdev->vpaths[i];
2885
2886                 vxge_hw_vpath_enable(vpath->handle);
2887                 smp_wmb();
2888                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2889         }
2890
2891         netif_tx_start_all_queues(vdev->ndev);
2892
2893         /* configure CI */
2894         vxge_config_ci_for_tti_rti(vdev);
2895
2896         goto out0;
2897
2898 out2:
2899         vxge_rem_isr(vdev);
2900
2901         /* Disable napi */
2902         if (vdev->config.intr_type != MSI_X)
2903                 napi_disable(&vdev->napi);
2904         else {
2905                 for (i = 0; i < vdev->no_of_vpath; i++)
2906                         napi_disable(&vdev->vpaths[i].ring.napi);
2907         }
2908
2909 out1:
2910         vxge_close_vpaths(vdev, 0);
2911 out0:
2912         vxge_debug_entryexit(VXGE_TRACE,
2913                                 "%s: %s:%d  Exiting...",
2914                                 dev->name, __func__, __LINE__);
2915         return ret;
2916 }
2917
2918 /* Loop through the mac address list and delete all the entries */
2919 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2920 {
2921
2922         struct list_head *entry, *next;
2923         if (list_empty(&vpath->mac_addr_list))
2924                 return;
2925
2926         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2927                 list_del(entry);
2928                 kfree((struct vxge_mac_addrs *)entry);
2929         }
2930 }
2931
2932 static void vxge_napi_del_all(struct vxgedev *vdev)
2933 {
2934         int i;
2935         if (vdev->config.intr_type != MSI_X)
2936                 netif_napi_del(&vdev->napi);
2937         else {
2938                 for (i = 0; i < vdev->no_of_vpath; i++)
2939                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2940         }
2941 }
2942
2943 static int do_vxge_close(struct net_device *dev, int do_io)
2944 {
2945         enum vxge_hw_status status;
2946         struct vxgedev *vdev;
2947         struct __vxge_hw_device *hldev;
2948         int i;
2949         u64 val64, vpath_vector;
2950         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2951                 dev->name, __func__, __LINE__);
2952
2953         vdev = netdev_priv(dev);
2954         hldev = pci_get_drvdata(vdev->pdev);
2955
2956         if (unlikely(!is_vxge_card_up(vdev)))
2957                 return 0;
2958
2959         /* If vxge_handle_crit_err task is executing,
2960          * wait till it completes. */
2961         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2962                 msleep(50);
2963
2964         if (do_io) {
2965                 /* Put the vpath back in normal mode */
2966                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2967                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2968                                 vxge_hw_mgmt_reg_type_mrpcim,
2969                                 0,
2970                                 (ulong)offsetof(
2971                                         struct vxge_hw_mrpcim_reg,
2972                                         rts_mgr_cbasin_cfg),
2973                                 &val64);
2974                 if (status == VXGE_HW_OK) {
2975                         val64 &= ~vpath_vector;
2976                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2977                                         vxge_hw_mgmt_reg_type_mrpcim,
2978                                         0,
2979                                         (ulong)offsetof(
2980                                                 struct vxge_hw_mrpcim_reg,
2981                                                 rts_mgr_cbasin_cfg),
2982                                         val64);
2983                 }
2984
2985                 /* Remove the function 0 from promiscuous mode */
2986                 vxge_hw_mgmt_reg_write(vdev->devh,
2987                         vxge_hw_mgmt_reg_type_mrpcim,
2988                         0,
2989                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2990                                 rxmac_authorize_all_addr),
2991                         0);
2992
2993                 vxge_hw_mgmt_reg_write(vdev->devh,
2994                         vxge_hw_mgmt_reg_type_mrpcim,
2995                         0,
2996                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2997                                 rxmac_authorize_all_vid),
2998                         0);
2999
3000                 smp_wmb();
3001         }
3002
3003         if (vdev->titan1)
3004                 del_timer_sync(&vdev->vp_lockup_timer);
3005
3006         del_timer_sync(&vdev->vp_reset_timer);
3007
3008         if (do_io)
3009                 vxge_hw_device_wait_receive_idle(hldev);
3010
3011         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3012
3013         /* Disable napi */
3014         if (vdev->config.intr_type != MSI_X)
3015                 napi_disable(&vdev->napi);
3016         else {
3017                 for (i = 0; i < vdev->no_of_vpath; i++)
3018                         napi_disable(&vdev->vpaths[i].ring.napi);
3019         }
3020
3021         netif_carrier_off(vdev->ndev);
3022         netdev_notice(vdev->ndev, "Link Down\n");
3023         netif_tx_stop_all_queues(vdev->ndev);
3024
3025         /* Note that at this point xmit() is stopped by upper layer */
3026         if (do_io)
3027                 vxge_hw_device_intr_disable(vdev->devh);
3028
3029         vxge_rem_isr(vdev);
3030
3031         vxge_napi_del_all(vdev);
3032
3033         if (do_io)
3034                 vxge_reset_all_vpaths(vdev);
3035
3036         vxge_close_vpaths(vdev, 0);
3037
3038         vxge_debug_entryexit(VXGE_TRACE,
3039                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
3040
3041         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
3042
3043         return 0;
3044 }
3045
3046 /**
3047  * vxge_close
3048  * @dev: device pointer.
3049  *
3050  * This is the stop entry point of the driver. It needs to undo exactly
3051  * whatever was done by the open entry point, thus it's usually referred to
3052  * as the close function.Among other things this function mainly stops the
3053  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3054  * Return value: '0' on success and an appropriate (-)ve integer as
3055  * defined in errno.h file on failure.
3056  */
3057 static int vxge_close(struct net_device *dev)
3058 {
3059         do_vxge_close(dev, 1);
3060         return 0;
3061 }
3062
3063 /**
3064  * vxge_change_mtu
3065  * @dev: net device pointer.
3066  * @new_mtu :the new MTU size for the device.
3067  *
3068  * A driver entry point to change MTU size for the device. Before changing
3069  * the MTU the device must be stopped.
3070  */
3071 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3072 {
3073         struct vxgedev *vdev = netdev_priv(dev);
3074
3075         vxge_debug_entryexit(vdev->level_trace,
3076                 "%s:%d", __func__, __LINE__);
3077         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3078                 vxge_debug_init(vdev->level_err,
3079                         "%s: mtu size is invalid", dev->name);
3080                 return -EPERM;
3081         }
3082
3083         /* check if device is down already */
3084         if (unlikely(!is_vxge_card_up(vdev))) {
3085                 /* just store new value, will use later on open() */
3086                 dev->mtu = new_mtu;
3087                 vxge_debug_init(vdev->level_err,
3088                         "%s", "device is down on MTU change");
3089                 return 0;
3090         }
3091
3092         vxge_debug_init(vdev->level_trace,
3093                 "trying to apply new MTU %d", new_mtu);
3094
3095         if (vxge_close(dev))
3096                 return -EIO;
3097
3098         dev->mtu = new_mtu;
3099         vdev->mtu = new_mtu;
3100
3101         if (vxge_open(dev))
3102                 return -EIO;
3103
3104         vxge_debug_init(vdev->level_trace,
3105                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3106
3107         vxge_debug_entryexit(vdev->level_trace,
3108                 "%s:%d  Exiting...", __func__, __LINE__);
3109
3110         return 0;
3111 }
3112
3113 /**
3114  * vxge_get_stats64
3115  * @dev: pointer to the device structure
3116  * @stats: pointer to struct rtnl_link_stats64
3117  *
3118  */
3119 static struct rtnl_link_stats64 *
3120 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
3121 {
3122         struct vxgedev *vdev = netdev_priv(dev);
3123         int k;
3124
3125         /* net_stats already zeroed by caller */
3126         for (k = 0; k < vdev->no_of_vpath; k++) {
3127                 struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats;
3128                 struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats;
3129                 unsigned int start;
3130                 u64 packets, bytes, multicast;
3131
3132                 do {
3133                         start = u64_stats_fetch_begin(&rxstats->syncp);
3134
3135                         packets   = rxstats->rx_frms;
3136                         multicast = rxstats->rx_mcast;
3137                         bytes     = rxstats->rx_bytes;
3138                 } while (u64_stats_fetch_retry(&rxstats->syncp, start));
3139
3140                 net_stats->rx_packets += packets;
3141                 net_stats->rx_bytes += bytes;
3142                 net_stats->multicast += multicast;
3143
3144                 net_stats->rx_errors += rxstats->rx_errors;
3145                 net_stats->rx_dropped += rxstats->rx_dropped;
3146
3147                 do {
3148                         start = u64_stats_fetch_begin(&txstats->syncp);
3149
3150                         packets = txstats->tx_frms;
3151                         bytes   = txstats->tx_bytes;
3152                 } while (u64_stats_fetch_retry(&txstats->syncp, start));
3153
3154                 net_stats->tx_packets += packets;
3155                 net_stats->tx_bytes += bytes;
3156                 net_stats->tx_errors += txstats->tx_errors;
3157         }
3158
3159         return net_stats;
3160 }
3161
3162 static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
3163 {
3164         enum vxge_hw_status status;
3165         u64 val64;
3166
3167         /* Timestamp is passed to the driver via the FCS, therefore we
3168          * must disable the FCS stripping by the adapter.  Since this is
3169          * required for the driver to load (due to a hardware bug),
3170          * there is no need to do anything special here.
3171          */
3172         val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3173                 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3174                 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3175
3176         status = vxge_hw_mgmt_reg_write(devh,
3177                                         vxge_hw_mgmt_reg_type_mrpcim,
3178                                         0,
3179                                         offsetof(struct vxge_hw_mrpcim_reg,
3180                                                  xmac_timestamp),
3181                                         val64);
3182         vxge_hw_device_flush_io(devh);
3183         devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
3184         return status;
3185 }
3186
3187 static int vxge_hwtstamp_ioctl(struct vxgedev *vdev, void __user *data)
3188 {
3189         struct hwtstamp_config config;
3190         int i;
3191
3192         if (copy_from_user(&config, data, sizeof(config)))
3193                 return -EFAULT;
3194
3195         /* reserved for future extensions */
3196         if (config.flags)
3197                 return -EINVAL;
3198
3199         /* Transmit HW Timestamp not supported */
3200         switch (config.tx_type) {
3201         case HWTSTAMP_TX_OFF:
3202                 break;
3203         case HWTSTAMP_TX_ON:
3204         default:
3205                 return -ERANGE;
3206         }
3207
3208         switch (config.rx_filter) {
3209         case HWTSTAMP_FILTER_NONE:
3210                 vdev->rx_hwts = 0;
3211                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3212                 break;
3213
3214         case HWTSTAMP_FILTER_ALL:
3215         case HWTSTAMP_FILTER_SOME:
3216         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3217         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3218         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3219         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3220         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3221         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3222         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3223         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3224         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3225         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3226         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3227         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3228                 if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
3229                         return -EFAULT;
3230
3231                 vdev->rx_hwts = 1;
3232                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3233                 break;
3234
3235         default:
3236                  return -ERANGE;
3237         }
3238
3239         for (i = 0; i < vdev->no_of_vpath; i++)
3240                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3241
3242         if (copy_to_user(data, &config, sizeof(config)))
3243                 return -EFAULT;
3244
3245         return 0;
3246 }
3247
3248 /**
3249  * vxge_ioctl
3250  * @dev: Device pointer.
3251  * @ifr: An IOCTL specific structure, that can contain a pointer to
3252  *       a proprietary structure used to pass information to the driver.
3253  * @cmd: This is used to distinguish between the different commands that
3254  *       can be passed to the IOCTL functions.
3255  *
3256  * Entry point for the Ioctl.
3257  */
3258 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3259 {
3260         struct vxgedev *vdev = netdev_priv(dev);
3261         int ret;
3262
3263         switch (cmd) {
3264         case SIOCSHWTSTAMP:
3265                 ret = vxge_hwtstamp_ioctl(vdev, rq->ifr_data);
3266                 if (ret)
3267                         return ret;
3268                 break;
3269         default:
3270                 return -EOPNOTSUPP;
3271         }
3272
3273         return 0;
3274 }
3275
3276 /**
3277  * vxge_tx_watchdog
3278  * @dev: pointer to net device structure
3279  *
3280  * Watchdog for transmit side.
3281  * This function is triggered if the Tx Queue is stopped
3282  * for a pre-defined amount of time when the Interface is still up.
3283  */
3284 static void vxge_tx_watchdog(struct net_device *dev)
3285 {
3286         struct vxgedev *vdev;
3287
3288         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3289
3290         vdev = netdev_priv(dev);
3291
3292         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3293
3294         schedule_work(&vdev->reset_task);
3295         vxge_debug_entryexit(VXGE_TRACE,
3296                 "%s:%d  Exiting...", __func__, __LINE__);
3297 }
3298
3299 /**
3300  * vxge_vlan_rx_add_vid
3301  * @dev: net device pointer.
3302  * @vid: vid
3303  *
3304  * Add the vlan id to the devices vlan id table
3305  */
3306 static void
3307 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3308 {
3309         struct vxgedev *vdev = netdev_priv(dev);
3310         struct vxge_vpath *vpath;
3311         int vp_id;
3312
3313         /* Add these vlan to the vid table */
3314         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3315                 vpath = &vdev->vpaths[vp_id];
3316                 if (!vpath->is_open)
3317                         continue;
3318                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3319         }
3320         set_bit(vid, vdev->active_vlans);
3321 }
3322
3323 /**
3324  * vxge_vlan_rx_add_vid
3325  * @dev: net device pointer.
3326  * @vid: vid
3327  *
3328  * Remove the vlan id from the device's vlan id table
3329  */
3330 static void
3331 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3332 {
3333         struct vxgedev *vdev = netdev_priv(dev);
3334         struct vxge_vpath *vpath;
3335         int vp_id;
3336
3337         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3338
3339         /* Delete this vlan from the vid table */
3340         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3341                 vpath = &vdev->vpaths[vp_id];
3342                 if (!vpath->is_open)
3343                         continue;
3344                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3345         }
3346         vxge_debug_entryexit(VXGE_TRACE,
3347                 "%s:%d  Exiting...", __func__, __LINE__);
3348         clear_bit(vid, vdev->active_vlans);
3349 }
3350
3351 static const struct net_device_ops vxge_netdev_ops = {
3352         .ndo_open               = vxge_open,
3353         .ndo_stop               = vxge_close,
3354         .ndo_get_stats64        = vxge_get_stats64,
3355         .ndo_start_xmit         = vxge_xmit,
3356         .ndo_validate_addr      = eth_validate_addr,
3357         .ndo_set_multicast_list = vxge_set_multicast,
3358         .ndo_do_ioctl           = vxge_ioctl,
3359         .ndo_set_mac_address    = vxge_set_mac_addr,
3360         .ndo_change_mtu         = vxge_change_mtu,
3361         .ndo_fix_features       = vxge_fix_features,
3362         .ndo_set_features       = vxge_set_features,
3363         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3364         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3365         .ndo_tx_timeout         = vxge_tx_watchdog,
3366 #ifdef CONFIG_NET_POLL_CONTROLLER
3367         .ndo_poll_controller    = vxge_netpoll,
3368 #endif
3369 };
3370
3371 static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3372                                           struct vxge_config *config,
3373                                           int high_dma, int no_of_vpath,
3374                                           struct vxgedev **vdev_out)
3375 {
3376         struct net_device *ndev;
3377         enum vxge_hw_status status = VXGE_HW_OK;
3378         struct vxgedev *vdev;
3379         int ret = 0, no_of_queue = 1;
3380         u64 stat;
3381
3382         *vdev_out = NULL;
3383         if (config->tx_steering_type)
3384                 no_of_queue = no_of_vpath;
3385
3386         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3387                         no_of_queue);
3388         if (ndev == NULL) {
3389                 vxge_debug_init(
3390                         vxge_hw_device_trace_level_get(hldev),
3391                 "%s : device allocation failed", __func__);
3392                 ret = -ENODEV;
3393                 goto _out0;
3394         }
3395
3396         vxge_debug_entryexit(
3397                 vxge_hw_device_trace_level_get(hldev),
3398                 "%s: %s:%d  Entering...",
3399                 ndev->name, __func__, __LINE__);
3400
3401         vdev = netdev_priv(ndev);
3402         memset(vdev, 0, sizeof(struct vxgedev));
3403
3404         vdev->ndev = ndev;
3405         vdev->devh = hldev;
3406         vdev->pdev = hldev->pdev;
3407         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3408         vdev->rx_hwts = 0;
3409         vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION);
3410
3411         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3412
3413         ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG |
3414                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3415                 NETIF_F_TSO | NETIF_F_TSO6 |
3416                 NETIF_F_HW_VLAN_TX;
3417         if (vdev->config.rth_steering != NO_STEERING)
3418                 ndev->hw_features |= NETIF_F_RXHASH;
3419
3420         ndev->features |= ndev->hw_features |
3421                 NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER;
3422
3423         /*  Driver entry points */
3424         ndev->irq = vdev->pdev->irq;
3425         ndev->base_addr = (unsigned long) hldev->bar0;
3426
3427         ndev->netdev_ops = &vxge_netdev_ops;
3428
3429         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3430         INIT_WORK(&vdev->reset_task, vxge_reset);
3431
3432         vxge_initialize_ethtool_ops(ndev);
3433
3434         /* Allocate memory for vpath */
3435         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3436                                 no_of_vpath, GFP_KERNEL);
3437         if (!vdev->vpaths) {
3438                 vxge_debug_init(VXGE_ERR,
3439                         "%s: vpath memory allocation failed",
3440                         vdev->ndev->name);
3441                 ret = -ENOMEM;
3442                 goto _out1;
3443         }
3444
3445         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3446                 "%s : checksuming enabled", __func__);
3447
3448         if (high_dma) {
3449                 ndev->features |= NETIF_F_HIGHDMA;
3450                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3451                         "%s : using High DMA", __func__);
3452         }
3453
3454         ret = register_netdev(ndev);
3455         if (ret) {
3456                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3457                         "%s: %s : device registration failed!",
3458                         ndev->name, __func__);
3459                 goto _out2;
3460         }
3461
3462         /*  Set the factory defined MAC address initially */
3463         ndev->addr_len = ETH_ALEN;
3464
3465         /* Make Link state as off at this point, when the Link change
3466          * interrupt comes the state will be automatically changed to
3467          * the right state.
3468          */
3469         netif_carrier_off(ndev);
3470
3471         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3472                 "%s: Ethernet device registered",
3473                 ndev->name);
3474
3475         hldev->ndev = ndev;
3476         *vdev_out = vdev;
3477
3478         /* Resetting the Device stats */
3479         status = vxge_hw_mrpcim_stats_access(
3480                                 hldev,
3481                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3482                                 0,
3483                                 0,
3484                                 &stat);
3485
3486         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3487                 vxge_debug_init(
3488                         vxge_hw_device_trace_level_get(hldev),
3489                         "%s: device stats clear returns"
3490                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3491
3492         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3493                 "%s: %s:%d  Exiting...",
3494                 ndev->name, __func__, __LINE__);
3495
3496         return ret;
3497 _out2:
3498         kfree(vdev->vpaths);
3499 _out1:
3500         free_netdev(ndev);
3501 _out0:
3502         return ret;
3503 }
3504
3505 /*
3506  * vxge_device_unregister
3507  *
3508  * This function will unregister and free network device
3509  */
3510 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3511 {
3512         struct vxgedev *vdev;
3513         struct net_device *dev;
3514         char buf[IFNAMSIZ];
3515
3516         dev = hldev->ndev;
3517         vdev = netdev_priv(dev);
3518
3519         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3520                              __func__, __LINE__);
3521
3522         strncpy(buf, dev->name, IFNAMSIZ);
3523
3524         flush_work_sync(&vdev->reset_task);
3525
3526         /* in 2.6 will call stop() if device is up */
3527         unregister_netdev(dev);
3528
3529         kfree(vdev->vpaths);
3530
3531         /* we are safe to free it now */
3532         free_netdev(dev);
3533
3534         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3535                         buf);
3536         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3537                              __func__, __LINE__);
3538 }
3539
3540 /*
3541  * vxge_callback_crit_err
3542  *
3543  * This function is called by the alarm handler in interrupt context.
3544  * Driver must analyze it based on the event type.
3545  */
3546 static void
3547 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3548                         enum vxge_hw_event type, u64 vp_id)
3549 {
3550         struct net_device *dev = hldev->ndev;
3551         struct vxgedev *vdev = netdev_priv(dev);
3552         struct vxge_vpath *vpath = NULL;
3553         int vpath_idx;
3554
3555         vxge_debug_entryexit(vdev->level_trace,
3556                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3557
3558         /* Note: This event type should be used for device wide
3559          * indications only - Serious errors, Slot freeze and critical errors
3560          */
3561         vdev->cric_err_event = type;
3562
3563         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3564                 vpath = &vdev->vpaths[vpath_idx];
3565                 if (vpath->device_id == vp_id)
3566                         break;
3567         }
3568
3569         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3570                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3571                         vxge_debug_init(VXGE_ERR,
3572                                 "%s: Slot is frozen", vdev->ndev->name);
3573                 } else if (type == VXGE_HW_EVENT_SERR) {
3574                         vxge_debug_init(VXGE_ERR,
3575                                 "%s: Encountered Serious Error",
3576                                 vdev->ndev->name);
3577                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3578                         vxge_debug_init(VXGE_ERR,
3579                                 "%s: Encountered Critical Error",
3580                                 vdev->ndev->name);
3581         }
3582
3583         if ((type == VXGE_HW_EVENT_SERR) ||
3584                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3585                 if (unlikely(vdev->exec_mode))
3586                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3587         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3588                 vxge_hw_device_mask_all(hldev);
3589                 if (unlikely(vdev->exec_mode))
3590                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3591         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3592                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3593
3594                 if (unlikely(vdev->exec_mode))
3595                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3596                 else {
3597                         /* check if this vpath is already set for reset */
3598                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3599
3600                                 /* disable interrupts for this vpath */
3601                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3602
3603                                 /* stop the queue for this vpath */
3604                                 netif_tx_stop_queue(vpath->fifo.txq);
3605                         }
3606                 }
3607         }
3608
3609         vxge_debug_entryexit(vdev->level_trace,
3610                 "%s: %s:%d  Exiting...",
3611                 vdev->ndev->name, __func__, __LINE__);
3612 }
3613
3614 static void verify_bandwidth(void)
3615 {
3616         int i, band_width, total = 0, equal_priority = 0;
3617
3618         /* 1. If user enters 0 for some fifo, give equal priority to all */
3619         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3620                 if (bw_percentage[i] == 0) {
3621                         equal_priority = 1;
3622                         break;
3623                 }
3624         }
3625
3626         if (!equal_priority) {
3627                 /* 2. If sum exceeds 100, give equal priority to all */
3628                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3629                         if (bw_percentage[i] == 0xFF)
3630                                 break;
3631
3632                         total += bw_percentage[i];
3633                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3634                                 equal_priority = 1;
3635                                 break;
3636                         }
3637                 }
3638         }
3639
3640         if (!equal_priority) {
3641                 /* Is all the bandwidth consumed? */
3642                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3643                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3644                                 /* Split rest of bw equally among next VPs*/
3645                                 band_width =
3646                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3647                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3648                                 if (band_width < 2) /* min of 2% */
3649                                         equal_priority = 1;
3650                                 else {
3651                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3652                                                 i++)
3653                                                 bw_percentage[i] =
3654                                                         band_width;
3655                                 }
3656                         }
3657                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3658                         equal_priority = 1;
3659         }
3660
3661         if (equal_priority) {
3662                 vxge_debug_init(VXGE_ERR,
3663                         "%s: Assigning equal bandwidth to all the vpaths",
3664                         VXGE_DRIVER_NAME);
3665                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3666                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3667                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3668                         bw_percentage[i] = bw_percentage[0];
3669         }
3670 }
3671
3672 /*
3673  * Vpath configuration
3674  */
3675 static int __devinit vxge_config_vpaths(
3676                         struct vxge_hw_device_config *device_config,
3677                         u64 vpath_mask, struct vxge_config *config_param)
3678 {
3679         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3680         u32 txdl_size, txdl_per_memblock;
3681
3682         temp = driver_config->vpath_per_dev;
3683         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3684                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3685                 /* No more CPU. Return vpath number as zero.*/
3686                 if (driver_config->g_no_cpus == -1)
3687                         return 0;
3688
3689                 if (!driver_config->g_no_cpus)
3690                         driver_config->g_no_cpus = num_online_cpus();
3691
3692                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3693                 if (!driver_config->vpath_per_dev)
3694                         driver_config->vpath_per_dev = 1;
3695
3696                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3697                         if (!vxge_bVALn(vpath_mask, i, 1))
3698                                 continue;
3699                         else
3700                                 default_no_vpath++;
3701                 if (default_no_vpath < driver_config->vpath_per_dev)
3702                         driver_config->vpath_per_dev = default_no_vpath;
3703
3704                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3705                                 (driver_config->vpath_per_dev * 2);
3706                 if (driver_config->g_no_cpus <= 0)
3707                         driver_config->g_no_cpus = -1;
3708         }
3709
3710         if (driver_config->vpath_per_dev == 1) {
3711                 vxge_debug_ll_config(VXGE_TRACE,
3712                         "%s: Disable tx and rx steering, "
3713                         "as single vpath is configured", VXGE_DRIVER_NAME);
3714                 config_param->rth_steering = NO_STEERING;
3715                 config_param->tx_steering_type = NO_STEERING;
3716                 device_config->rth_en = 0;
3717         }
3718
3719         /* configure bandwidth */
3720         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3721                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3722
3723         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3724                 device_config->vp_config[i].vp_id = i;
3725                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3726                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3727                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3728                                 vxge_debug_ll_config(VXGE_TRACE,
3729                                         "%s: vpath: %d is not available",
3730                                         VXGE_DRIVER_NAME, i);
3731                                 continue;
3732                         } else {
3733                                 vxge_debug_ll_config(VXGE_TRACE,
3734                                         "%s: vpath: %d available",
3735                                         VXGE_DRIVER_NAME, i);
3736                                 no_of_vpaths++;
3737                         }
3738                 } else {
3739                         vxge_debug_ll_config(VXGE_TRACE,
3740                                 "%s: vpath: %d is not configured, "
3741                                 "max_config_vpath exceeded",
3742                                 VXGE_DRIVER_NAME, i);
3743                         break;
3744                 }
3745
3746                 /* Configure Tx fifo's */
3747                 device_config->vp_config[i].fifo.enable =
3748                                                 VXGE_HW_FIFO_ENABLE;
3749                 device_config->vp_config[i].fifo.max_frags =
3750                                 MAX_SKB_FRAGS + 1;
3751                 device_config->vp_config[i].fifo.memblock_size =
3752                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3753
3754                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3755                                 sizeof(struct vxge_hw_fifo_txd);
3756                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3757
3758                 device_config->vp_config[i].fifo.fifo_blocks =
3759                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3760
3761                 device_config->vp_config[i].fifo.intr =
3762                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3763
3764                 /* Configure tti properties */
3765                 device_config->vp_config[i].tti.intr_enable =
3766                                         VXGE_HW_TIM_INTR_ENABLE;
3767
3768                 device_config->vp_config[i].tti.btimer_val =
3769                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3770
3771                 device_config->vp_config[i].tti.timer_ac_en =
3772                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3773
3774                 /* For msi-x with napi (each vector has a handler of its own) -
3775                  * Set CI to OFF for all vpaths
3776                  */
3777                 device_config->vp_config[i].tti.timer_ci_en =
3778                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3779
3780                 device_config->vp_config[i].tti.timer_ri_en =
3781                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3782
3783                 device_config->vp_config[i].tti.util_sel =
3784                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3785
3786                 device_config->vp_config[i].tti.ltimer_val =
3787                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3788
3789                 device_config->vp_config[i].tti.rtimer_val =
3790                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3791
3792                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3793                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3794                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3795                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3796                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3797                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3798                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3799
3800                 /* Configure Rx rings */
3801                 device_config->vp_config[i].ring.enable  =
3802                                                 VXGE_HW_RING_ENABLE;
3803
3804                 device_config->vp_config[i].ring.ring_blocks  =
3805                                                 VXGE_HW_DEF_RING_BLOCKS;
3806
3807                 device_config->vp_config[i].ring.buffer_mode =
3808                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3809
3810                 device_config->vp_config[i].ring.rxds_limit  =
3811                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3812
3813                 device_config->vp_config[i].ring.scatter_mode =
3814                                         VXGE_HW_RING_SCATTER_MODE_A;
3815
3816                 /* Configure rti properties */
3817                 device_config->vp_config[i].rti.intr_enable =
3818                                         VXGE_HW_TIM_INTR_ENABLE;
3819
3820                 device_config->vp_config[i].rti.btimer_val =
3821                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3822
3823                 device_config->vp_config[i].rti.timer_ac_en =
3824                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3825
3826                 device_config->vp_config[i].rti.timer_ci_en =
3827                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3828
3829                 device_config->vp_config[i].rti.timer_ri_en =
3830                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3831
3832                 device_config->vp_config[i].rti.util_sel =
3833                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3834
3835                 device_config->vp_config[i].rti.urange_a =
3836                                                 RTI_RX_URANGE_A;
3837                 device_config->vp_config[i].rti.urange_b =
3838                                                 RTI_RX_URANGE_B;
3839                 device_config->vp_config[i].rti.urange_c =
3840                                                 RTI_RX_URANGE_C;
3841                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3842                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3843                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3844                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3845
3846                 device_config->vp_config[i].rti.rtimer_val =
3847                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3848
3849                 device_config->vp_config[i].rti.ltimer_val =
3850                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3851
3852                 device_config->vp_config[i].rpa_strip_vlan_tag =
3853                         vlan_tag_strip;
3854         }
3855
3856         driver_config->vpath_per_dev = temp;
3857         return no_of_vpaths;
3858 }
3859
3860 /* initialize device configuratrions */
3861 static void __devinit vxge_device_config_init(
3862                                 struct vxge_hw_device_config *device_config,
3863                                 int *intr_type)
3864 {
3865         /* Used for CQRQ/SRQ. */
3866         device_config->dma_blockpool_initial =
3867                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3868
3869         device_config->dma_blockpool_max =
3870                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3871
3872         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3873                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3874
3875 #ifndef CONFIG_PCI_MSI
3876         vxge_debug_init(VXGE_ERR,
3877                 "%s: This Kernel does not support "
3878                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3879         *intr_type = INTA;
3880 #endif
3881
3882         /* Configure whether MSI-X or IRQL. */
3883         switch (*intr_type) {
3884         case INTA:
3885                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3886                 break;
3887
3888         case MSI_X:
3889                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT;
3890                 break;
3891         }
3892
3893         /* Timer period between device poll */
3894         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3895
3896         /* Configure mac based steering. */
3897         device_config->rts_mac_en = addr_learn_en;
3898
3899         /* Configure Vpaths */
3900         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3901
3902         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3903                         __func__);
3904         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3905                         device_config->intr_mode);
3906         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3907                         device_config->device_poll_millis);
3908         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3909                         device_config->rth_en);
3910         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3911                         device_config->rth_it_type);
3912 }
3913
3914 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3915 {
3916         int i;
3917
3918         vxge_debug_init(VXGE_TRACE,
3919                 "%s: %d Vpath(s) opened",
3920                 vdev->ndev->name, vdev->no_of_vpath);
3921
3922         switch (vdev->config.intr_type) {
3923         case INTA:
3924                 vxge_debug_init(VXGE_TRACE,
3925                         "%s: Interrupt type INTA", vdev->ndev->name);
3926                 break;
3927
3928         case MSI_X:
3929                 vxge_debug_init(VXGE_TRACE,
3930                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3931                 break;
3932         }
3933
3934         if (vdev->config.rth_steering) {
3935                 vxge_debug_init(VXGE_TRACE,
3936                         "%s: RTH steering enabled for TCP_IPV4",
3937                         vdev->ndev->name);
3938         } else {
3939                 vxge_debug_init(VXGE_TRACE,
3940                         "%s: RTH steering disabled", vdev->ndev->name);
3941         }
3942
3943         switch (vdev->config.tx_steering_type) {
3944         case NO_STEERING:
3945                 vxge_debug_init(VXGE_TRACE,
3946                         "%s: Tx steering disabled", vdev->ndev->name);
3947                 break;
3948         case TX_PRIORITY_STEERING:
3949                 vxge_debug_init(VXGE_TRACE,
3950                         "%s: Unsupported tx steering option",
3951                         vdev->ndev->name);
3952                 vxge_debug_init(VXGE_TRACE,
3953                         "%s: Tx steering disabled", vdev->ndev->name);
3954                 vdev->config.tx_steering_type = 0;
3955                 break;
3956         case TX_VLAN_STEERING:
3957                 vxge_debug_init(VXGE_TRACE,
3958                         "%s: Unsupported tx steering option",
3959                         vdev->ndev->name);
3960                 vxge_debug_init(VXGE_TRACE,
3961                         "%s: Tx steering disabled", vdev->ndev->name);
3962                 vdev->config.tx_steering_type = 0;
3963                 break;
3964         case TX_MULTIQ_STEERING:
3965                 vxge_debug_init(VXGE_TRACE,
3966                         "%s: Tx multiqueue steering enabled",
3967                         vdev->ndev->name);
3968                 break;
3969         case TX_PORT_STEERING:
3970                 vxge_debug_init(VXGE_TRACE,
3971                         "%s: Tx port steering enabled",
3972                         vdev->ndev->name);
3973                 break;
3974         default:
3975                 vxge_debug_init(VXGE_ERR,
3976                         "%s: Unsupported tx steering type",
3977                         vdev->ndev->name);
3978                 vxge_debug_init(VXGE_TRACE,
3979                         "%s: Tx steering disabled", vdev->ndev->name);
3980                 vdev->config.tx_steering_type = 0;
3981         }
3982
3983         if (vdev->config.addr_learn_en)
3984                 vxge_debug_init(VXGE_TRACE,
3985                         "%s: MAC Address learning enabled", vdev->ndev->name);
3986
3987         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3988                 if (!vxge_bVALn(vpath_mask, i, 1))
3989                         continue;
3990                 vxge_debug_ll_config(VXGE_TRACE,
3991                         "%s: MTU size - %d", vdev->ndev->name,
3992                         ((struct __vxge_hw_device  *)(vdev->devh))->
3993                                 config.vp_config[i].mtu);
3994                 vxge_debug_init(VXGE_TRACE,
3995                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3996                         ((struct __vxge_hw_device  *)(vdev->devh))->
3997                                 config.vp_config[i].rpa_strip_vlan_tag
3998                         ? "Enabled" : "Disabled");
3999                 vxge_debug_ll_config(VXGE_TRACE,
4000                         "%s: Max frags : %d", vdev->ndev->name,
4001                         ((struct __vxge_hw_device  *)(vdev->devh))->
4002                                 config.vp_config[i].fifo.max_frags);
4003                 break;
4004         }
4005 }
4006
4007 #ifdef CONFIG_PM
4008 /**
4009  * vxge_pm_suspend - vxge power management suspend entry point
4010  *
4011  */
4012 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
4013 {
4014         return -ENOSYS;
4015 }
4016 /**
4017  * vxge_pm_resume - vxge power management resume entry point
4018  *
4019  */
4020 static int vxge_pm_resume(struct pci_dev *pdev)
4021 {
4022         return -ENOSYS;
4023 }
4024
4025 #endif
4026
4027 /**
4028  * vxge_io_error_detected - called when PCI error is detected
4029  * @pdev: Pointer to PCI device
4030  * @state: The current pci connection state
4031  *
4032  * This function is called after a PCI bus error affecting
4033  * this device has been detected.
4034  */
4035 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
4036                                                 pci_channel_state_t state)
4037 {
4038         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4039         struct net_device *netdev = hldev->ndev;
4040
4041         netif_device_detach(netdev);
4042
4043         if (state == pci_channel_io_perm_failure)
4044                 return PCI_ERS_RESULT_DISCONNECT;
4045
4046         if (netif_running(netdev)) {
4047                 /* Bring down the card, while avoiding PCI I/O */
4048                 do_vxge_close(netdev, 0);
4049         }
4050
4051         pci_disable_device(pdev);
4052
4053         return PCI_ERS_RESULT_NEED_RESET;
4054 }
4055
4056 /**
4057  * vxge_io_slot_reset - called after the pci bus has been reset.
4058  * @pdev: Pointer to PCI device
4059  *
4060  * Restart the card from scratch, as if from a cold-boot.
4061  * At this point, the card has exprienced a hard reset,
4062  * followed by fixups by BIOS, and has its config space
4063  * set up identically to what it was at cold boot.
4064  */
4065 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
4066 {
4067         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4068         struct net_device *netdev = hldev->ndev;
4069
4070         struct vxgedev *vdev = netdev_priv(netdev);
4071
4072         if (pci_enable_device(pdev)) {
4073                 netdev_err(netdev, "Cannot re-enable device after reset\n");
4074                 return PCI_ERS_RESULT_DISCONNECT;
4075         }
4076
4077         pci_set_master(pdev);
4078         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4079
4080         return PCI_ERS_RESULT_RECOVERED;
4081 }
4082
4083 /**
4084  * vxge_io_resume - called when traffic can start flowing again.
4085  * @pdev: Pointer to PCI device
4086  *
4087  * This callback is called when the error recovery driver tells
4088  * us that its OK to resume normal operation.
4089  */
4090 static void vxge_io_resume(struct pci_dev *pdev)
4091 {
4092         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4093         struct net_device *netdev = hldev->ndev;
4094
4095         if (netif_running(netdev)) {
4096                 if (vxge_open(netdev)) {
4097                         netdev_err(netdev,
4098                                    "Can't bring device back up after reset\n");
4099                         return;
4100                 }
4101         }
4102
4103         netif_device_attach(netdev);
4104 }
4105
4106 static inline u32 vxge_get_num_vfs(u64 function_mode)
4107 {
4108         u32 num_functions = 0;
4109
4110         switch (function_mode) {
4111         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4112         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4113                 num_functions = 8;
4114                 break;
4115         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4116                 num_functions = 1;
4117                 break;
4118         case VXGE_HW_FUNCTION_MODE_SRIOV:
4119         case VXGE_HW_FUNCTION_MODE_MRIOV:
4120         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4121                 num_functions = 17;
4122                 break;
4123         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4124                 num_functions = 4;
4125                 break;
4126         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4127                 num_functions = 2;
4128                 break;
4129         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4130                 num_functions = 8; /* TODO */
4131                 break;
4132         }
4133         return num_functions;
4134 }
4135
4136 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4137 {
4138         struct __vxge_hw_device *hldev = vdev->devh;
4139         u32 maj, min, bld, cmaj, cmin, cbld;
4140         enum vxge_hw_status status;
4141         const struct firmware *fw;
4142         int ret;
4143
4144         ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4145         if (ret) {
4146                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4147                                 VXGE_DRIVER_NAME, fw_name);
4148                 goto out;
4149         }
4150
4151         /* Load the new firmware onto the adapter */
4152         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4153         if (status != VXGE_HW_OK) {
4154                 vxge_debug_init(VXGE_ERR,
4155                                 "%s: FW image download to adapter failed '%s'.",
4156                                 VXGE_DRIVER_NAME, fw_name);
4157                 ret = -EIO;
4158                 goto out;
4159         }
4160
4161         /* Read the version of the new firmware */
4162         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4163         if (status != VXGE_HW_OK) {
4164                 vxge_debug_init(VXGE_ERR,
4165                                 "%s: Upgrade read version failed '%s'.",
4166                                 VXGE_DRIVER_NAME, fw_name);
4167                 ret = -EIO;
4168                 goto out;
4169         }
4170
4171         cmaj = vdev->config.device_hw_info.fw_version.major;
4172         cmin = vdev->config.device_hw_info.fw_version.minor;
4173         cbld = vdev->config.device_hw_info.fw_version.build;
4174         /* It's possible the version in /lib/firmware is not the latest version.
4175          * If so, we could get into a loop of trying to upgrade to the latest
4176          * and flashing the older version.
4177          */
4178         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4179             !override) {
4180                 ret = -EINVAL;
4181                 goto out;
4182         }
4183
4184         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4185                maj, min, bld);
4186
4187         /* Flash the adapter with the new firmware */
4188         status = vxge_hw_flash_fw(hldev);
4189         if (status != VXGE_HW_OK) {
4190                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4191                                 VXGE_DRIVER_NAME, fw_name);
4192                 ret = -EIO;
4193                 goto out;
4194         }
4195
4196         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4197                "hard reset before using, thus requiring a system reboot or a "
4198                "hotplug event.\n");
4199
4200 out:
4201         release_firmware(fw);
4202         return ret;
4203 }
4204
4205 static int vxge_probe_fw_update(struct vxgedev *vdev)
4206 {
4207         u32 maj, min, bld;
4208         int ret, gpxe = 0;
4209         char *fw_name;
4210
4211         maj = vdev->config.device_hw_info.fw_version.major;
4212         min = vdev->config.device_hw_info.fw_version.minor;
4213         bld = vdev->config.device_hw_info.fw_version.build;
4214
4215         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4216                 return 0;
4217
4218         /* Ignore the build number when determining if the current firmware is
4219          * "too new" to load the driver
4220          */
4221         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4222                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4223                                 "version, unable to load driver\n",
4224                                 VXGE_DRIVER_NAME);
4225                 return -EINVAL;
4226         }
4227
4228         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4229          * work with this driver.
4230          */
4231         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4232                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4233                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4234                 return -EINVAL;
4235         }
4236
4237         /* If file not specified, determine gPXE or not */
4238         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4239                 int i;
4240                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4241                         if (vdev->devh->eprom_versions[i]) {
4242                                 gpxe = 1;
4243                                 break;
4244                         }
4245         }
4246         if (gpxe)
4247                 fw_name = "vxge/X3fw-pxe.ncf";
4248         else
4249                 fw_name = "vxge/X3fw.ncf";
4250
4251         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4252         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4253          * probe, so ignore them
4254          */
4255         if (ret != -EINVAL && ret != -ENOENT)
4256                 return -EIO;
4257         else
4258                 ret = 0;
4259
4260         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4261             VXGE_FW_VER(maj, min, 0)) {
4262                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4263                                 " be used with this driver.\n"
4264                                 "Please get the latest version from "
4265                                 "ftp://ftp.s2io.com/pub/X3100-Drivers/FIRMWARE",
4266                                 VXGE_DRIVER_NAME, maj, min, bld);
4267                 return -EINVAL;
4268         }
4269
4270         return ret;
4271 }
4272
4273 static int __devinit is_sriov_initialized(struct pci_dev *pdev)
4274 {
4275         int pos;
4276         u16 ctrl;
4277
4278         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4279         if (pos) {
4280                 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4281                 if (ctrl & PCI_SRIOV_CTRL_VFE)
4282                         return 1;
4283         }
4284         return 0;
4285 }
4286
4287 /**
4288  * vxge_probe
4289  * @pdev : structure containing the PCI related information of the device.
4290  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4291  * Description:
4292  * This function is called when a new PCI device gets detected and initializes
4293  * it.
4294  * Return value:
4295  * returns 0 on success and negative on failure.
4296  *
4297  */
4298 static int __devinit
4299 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4300 {
4301         struct __vxge_hw_device *hldev;
4302         enum vxge_hw_status status;
4303         int ret;
4304         int high_dma = 0;
4305         u64 vpath_mask = 0;
4306         struct vxgedev *vdev;
4307         struct vxge_config *ll_config = NULL;
4308         struct vxge_hw_device_config *device_config = NULL;
4309         struct vxge_hw_device_attr attr;
4310         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4311         u8 *macaddr;
4312         struct vxge_mac_addrs *entry;
4313         static int bus = -1, device = -1;
4314         u32 host_type;
4315         u8 new_device = 0;
4316         enum vxge_hw_status is_privileged;
4317         u32 function_mode;
4318         u32 num_vfs = 0;
4319
4320         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4321         attr.pdev = pdev;
4322
4323         /* In SRIOV-17 mode, functions of the same adapter
4324          * can be deployed on different buses
4325          */
4326         if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4327             !pdev->is_virtfn)
4328                 new_device = 1;
4329
4330         bus = pdev->bus->number;
4331         device = PCI_SLOT(pdev->devfn);
4332
4333         if (new_device) {
4334                 if (driver_config->config_dev_cnt &&
4335                    (driver_config->config_dev_cnt !=
4336                         driver_config->total_dev_cnt))
4337                         vxge_debug_init(VXGE_ERR,
4338                                 "%s: Configured %d of %d devices",
4339                                 VXGE_DRIVER_NAME,
4340                                 driver_config->config_dev_cnt,
4341                                 driver_config->total_dev_cnt);
4342                 driver_config->config_dev_cnt = 0;
4343                 driver_config->total_dev_cnt = 0;
4344         }
4345
4346         /* Now making the CPU based no of vpath calculation
4347          * applicable for individual functions as well.
4348          */
4349         driver_config->g_no_cpus = 0;
4350         driver_config->vpath_per_dev = max_config_vpath;
4351
4352         driver_config->total_dev_cnt++;
4353         if (++driver_config->config_dev_cnt > max_config_dev) {
4354                 ret = 0;
4355                 goto _exit0;
4356         }
4357
4358         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4359                 GFP_KERNEL);
4360         if (!device_config) {
4361                 ret = -ENOMEM;
4362                 vxge_debug_init(VXGE_ERR,
4363                         "device_config : malloc failed %s %d",
4364                         __FILE__, __LINE__);
4365                 goto _exit0;
4366         }
4367
4368         ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4369         if (!ll_config) {
4370                 ret = -ENOMEM;
4371                 vxge_debug_init(VXGE_ERR,
4372                         "device_config : malloc failed %s %d",
4373                         __FILE__, __LINE__);
4374                 goto _exit0;
4375         }
4376         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4377         ll_config->intr_type = MSI_X;
4378         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4379         ll_config->rth_steering = RTH_STEERING;
4380
4381         /* get the default configuration parameters */
4382         vxge_hw_device_config_default_get(device_config);
4383
4384         /* initialize configuration parameters */
4385         vxge_device_config_init(device_config, &ll_config->intr_type);
4386
4387         ret = pci_enable_device(pdev);
4388         if (ret) {
4389                 vxge_debug_init(VXGE_ERR,
4390                         "%s : can not enable PCI device", __func__);
4391                 goto _exit0;
4392         }
4393
4394         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4395                 vxge_debug_ll_config(VXGE_TRACE,
4396                         "%s : using 64bit DMA", __func__);
4397
4398                 high_dma = 1;
4399
4400                 if (pci_set_consistent_dma_mask(pdev,
4401                                                 DMA_BIT_MASK(64))) {
4402                         vxge_debug_init(VXGE_ERR,
4403                                 "%s : unable to obtain 64bit DMA for "
4404                                 "consistent allocations", __func__);
4405                         ret = -ENOMEM;
4406                         goto _exit1;
4407                 }
4408         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4409                 vxge_debug_ll_config(VXGE_TRACE,
4410                         "%s : using 32bit DMA", __func__);
4411         } else {
4412                 ret = -ENOMEM;
4413                 goto _exit1;
4414         }
4415
4416         ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
4417         if (ret) {
4418                 vxge_debug_init(VXGE_ERR,
4419                         "%s : request regions failed", __func__);
4420                 goto _exit1;
4421         }
4422
4423         pci_set_master(pdev);
4424
4425         attr.bar0 = pci_ioremap_bar(pdev, 0);
4426         if (!attr.bar0) {
4427                 vxge_debug_init(VXGE_ERR,
4428                         "%s : cannot remap io memory bar0", __func__);
4429                 ret = -ENODEV;
4430                 goto _exit2;
4431         }
4432         vxge_debug_ll_config(VXGE_TRACE,
4433                 "pci ioremap bar0: %p:0x%llx",
4434                 attr.bar0,
4435                 (unsigned long long)pci_resource_start(pdev, 0));
4436
4437         status = vxge_hw_device_hw_info_get(attr.bar0,
4438                         &ll_config->device_hw_info);
4439         if (status != VXGE_HW_OK) {
4440                 vxge_debug_init(VXGE_ERR,
4441                         "%s: Reading of hardware info failed."
4442                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4443                 ret = -EINVAL;
4444                 goto _exit3;
4445         }
4446
4447         vpath_mask = ll_config->device_hw_info.vpath_mask;
4448         if (vpath_mask == 0) {
4449                 vxge_debug_ll_config(VXGE_TRACE,
4450                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4451                 ret = -EINVAL;
4452                 goto _exit3;
4453         }
4454
4455         vxge_debug_ll_config(VXGE_TRACE,
4456                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4457                 (unsigned long long)vpath_mask);
4458
4459         function_mode = ll_config->device_hw_info.function_mode;
4460         host_type = ll_config->device_hw_info.host_type;
4461         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4462                 ll_config->device_hw_info.func_id);
4463
4464         /* Check how many vpaths are available */
4465         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4466                 if (!((vpath_mask) & vxge_mBIT(i)))
4467                         continue;
4468                 max_vpath_supported++;
4469         }
4470
4471         if (new_device)
4472                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4473
4474         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4475         if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4476            (ll_config->intr_type != INTA)) {
4477                 ret = pci_enable_sriov(pdev, num_vfs);
4478                 if (ret)
4479                         vxge_debug_ll_config(VXGE_ERR,
4480                                 "Failed in enabling SRIOV mode: %d\n", ret);
4481                         /* No need to fail out, as an error here is non-fatal */
4482         }
4483
4484         /*
4485          * Configure vpaths and get driver configured number of vpaths
4486          * which is less than or equal to the maximum vpaths per function.
4487          */
4488         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4489         if (!no_of_vpath) {
4490                 vxge_debug_ll_config(VXGE_ERR,
4491                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4492                 ret = 0;
4493                 goto _exit3;
4494         }
4495
4496         /* Setting driver callbacks */
4497         attr.uld_callbacks.link_up = vxge_callback_link_up;
4498         attr.uld_callbacks.link_down = vxge_callback_link_down;
4499         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4500
4501         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4502         if (status != VXGE_HW_OK) {
4503                 vxge_debug_init(VXGE_ERR,
4504                         "Failed to initialize device (%d)", status);
4505                         ret = -EINVAL;
4506                         goto _exit3;
4507         }
4508
4509         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4510                         ll_config->device_hw_info.fw_version.minor,
4511                         ll_config->device_hw_info.fw_version.build) >=
4512             VXGE_EPROM_FW_VER) {
4513                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4514
4515                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4516                 if (status != VXGE_HW_OK) {
4517                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4518                                         VXGE_DRIVER_NAME);
4519                         /* This is a non-fatal error, continue */
4520                 }
4521
4522                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4523                         hldev->eprom_versions[i] = img[i].version;
4524                         if (!img[i].is_valid)
4525                                 break;
4526                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4527                                         "%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4528                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4529                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4530                                         VXGE_EPROM_IMG_FIX(img[i].version),
4531                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4532                 }
4533         }
4534
4535         /* if FCS stripping is not disabled in MAC fail driver load */
4536         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4537         if (status != VXGE_HW_OK) {
4538                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4539                                 " failing driver load", VXGE_DRIVER_NAME);
4540                 ret = -EINVAL;
4541                 goto _exit4;
4542         }
4543
4544         /* Always enable HWTS.  This will always cause the FCS to be invalid,
4545          * due to the fact that HWTS is using the FCS as the location of the
4546          * timestamp.  The HW FCS checking will still correctly determine if
4547          * there is a valid checksum, and the FCS is being removed by the driver
4548          * anyway.  So no fucntionality is being lost.  Since it is always
4549          * enabled, we now simply use the ioctl call to set whether or not the
4550          * driver should be paying attention to the HWTS.
4551          */
4552         if (is_privileged == VXGE_HW_OK) {
4553                 status = vxge_timestamp_config(hldev);
4554                 if (status != VXGE_HW_OK) {
4555                         vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
4556                                         VXGE_DRIVER_NAME);
4557                         ret = -EFAULT;
4558                         goto _exit4;
4559                 }
4560         }
4561
4562         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4563
4564         /* set private device info */
4565         pci_set_drvdata(pdev, hldev);
4566
4567         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4568         ll_config->addr_learn_en = addr_learn_en;
4569         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4570         ll_config->rth_hash_type_tcpipv4 = 1;
4571         ll_config->rth_hash_type_ipv4 = 0;
4572         ll_config->rth_hash_type_tcpipv6 = 0;
4573         ll_config->rth_hash_type_ipv6 = 0;
4574         ll_config->rth_hash_type_tcpipv6ex = 0;
4575         ll_config->rth_hash_type_ipv6ex = 0;
4576         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4577         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4578         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4579
4580         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4581                                    &vdev);
4582         if (ret) {
4583                 ret = -EINVAL;
4584                 goto _exit4;
4585         }
4586
4587         ret = vxge_probe_fw_update(vdev);
4588         if (ret)
4589                 goto _exit5;
4590
4591         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4592         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4593                 vxge_hw_device_trace_level_get(hldev));
4594
4595         /* set private HW device info */
4596         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4597         vdev->bar0 = attr.bar0;
4598         vdev->max_vpath_supported = max_vpath_supported;
4599         vdev->no_of_vpath = no_of_vpath;
4600
4601         /* Virtual Path count */
4602         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4603                 if (!vxge_bVALn(vpath_mask, i, 1))
4604                         continue;
4605                 if (j >= vdev->no_of_vpath)
4606                         break;
4607
4608                 vdev->vpaths[j].is_configured = 1;
4609                 vdev->vpaths[j].device_id = i;
4610                 vdev->vpaths[j].ring.driver_id = j;
4611                 vdev->vpaths[j].vdev = vdev;
4612                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4613                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4614                                 ll_config->device_hw_info.mac_addrs[i],
4615                                 ETH_ALEN);
4616
4617                 /* Initialize the mac address list header */
4618                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4619
4620                 vdev->vpaths[j].mac_addr_cnt = 0;
4621                 vdev->vpaths[j].mcast_addr_cnt = 0;
4622                 j++;
4623         }
4624         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4625         vdev->max_config_port = max_config_port;
4626
4627         vdev->vlan_tag_strip = vlan_tag_strip;
4628
4629         /* map the hashing selector table to the configured vpaths */
4630         for (i = 0; i < vdev->no_of_vpath; i++)
4631                 vdev->vpath_selector[i] = vpath_selector[i];
4632
4633         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4634
4635         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4636         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4637         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4638
4639         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4640                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4641
4642         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4643                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4644
4645         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4646                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4647
4648         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4649                 vdev->ndev->name, macaddr);
4650
4651         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4652                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4653
4654         vxge_debug_init(VXGE_TRACE,
4655                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4656                 ll_config->device_hw_info.fw_version.version,
4657                 ll_config->device_hw_info.fw_date.date);
4658
4659         if (new_device) {
4660                 switch (ll_config->device_hw_info.function_mode) {
4661                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4662                         vxge_debug_init(VXGE_TRACE,
4663                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4664                 break;
4665                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4666                         vxge_debug_init(VXGE_TRACE,
4667                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4668                 break;
4669                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4670                         vxge_debug_init(VXGE_TRACE,
4671                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4672                 break;
4673                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4674                         vxge_debug_init(VXGE_TRACE,
4675                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4676                 break;
4677                 }
4678         }
4679
4680         vxge_print_parm(vdev, vpath_mask);
4681
4682         /* Store the fw version for ethttool option */
4683         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4684         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4685         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4686
4687         /* Copy the station mac address to the list */
4688         for (i = 0; i < vdev->no_of_vpath; i++) {
4689                 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4690                 if (NULL == entry) {
4691                         vxge_debug_init(VXGE_ERR,
4692                                 "%s: mac_addr_list : memory allocation failed",
4693                                 vdev->ndev->name);
4694                         ret = -EPERM;
4695                         goto _exit6;
4696                 }
4697                 macaddr = (u8 *)&entry->macaddr;
4698                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4699                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4700                 vdev->vpaths[i].mac_addr_cnt = 1;
4701         }
4702
4703         kfree(device_config);
4704
4705         /*
4706          * INTA is shared in multi-function mode. This is unlike the INTA
4707          * implementation in MR mode, where each VH has its own INTA message.
4708          * - INTA is masked (disabled) as long as at least one function sets
4709          * its TITAN_MASK_ALL_INT.ALARM bit.
4710          * - INTA is unmasked (enabled) when all enabled functions have cleared
4711          * their own TITAN_MASK_ALL_INT.ALARM bit.
4712          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4713          * Though this driver leaves the top level interrupts unmasked while
4714          * leaving the required module interrupt bits masked on exit, there
4715          * could be a rougue driver around that does not follow this procedure
4716          * resulting in a failure to generate interrupts. The following code is
4717          * present to prevent such a failure.
4718          */
4719
4720         if (ll_config->device_hw_info.function_mode ==
4721                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4722                 if (vdev->config.intr_type == INTA)
4723                         vxge_hw_device_unmask_all(hldev);
4724
4725         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4726                 vdev->ndev->name, __func__, __LINE__);
4727
4728         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4729         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4730                 vxge_hw_device_trace_level_get(hldev));
4731
4732         kfree(ll_config);
4733         return 0;
4734
4735 _exit6:
4736         for (i = 0; i < vdev->no_of_vpath; i++)
4737                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4738 _exit5:
4739         vxge_device_unregister(hldev);
4740 _exit4:
4741         pci_set_drvdata(pdev, NULL);
4742         vxge_hw_device_terminate(hldev);
4743         pci_disable_sriov(pdev);
4744 _exit3:
4745         iounmap(attr.bar0);
4746 _exit2:
4747         pci_release_region(pdev, 0);
4748 _exit1:
4749         pci_disable_device(pdev);
4750 _exit0:
4751         kfree(ll_config);
4752         kfree(device_config);
4753         driver_config->config_dev_cnt--;
4754         driver_config->total_dev_cnt--;
4755         return ret;
4756 }
4757
4758 /**
4759  * vxge_rem_nic - Free the PCI device
4760  * @pdev: structure containing the PCI related information of the device.
4761  * Description: This function is called by the Pci subsystem to release a
4762  * PCI device and free up all resource held up by the device.
4763  */
4764 static void __devexit vxge_remove(struct pci_dev *pdev)
4765 {
4766         struct __vxge_hw_device *hldev;
4767         struct vxgedev *vdev;
4768         int i;
4769
4770         hldev = pci_get_drvdata(pdev);
4771         if (hldev == NULL)
4772                 return;
4773
4774         vdev = netdev_priv(hldev->ndev);
4775
4776         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4777         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4778                         __func__);
4779
4780         for (i = 0; i < vdev->no_of_vpath; i++)
4781                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4782
4783         vxge_device_unregister(hldev);
4784         pci_set_drvdata(pdev, NULL);
4785         /* Do not call pci_disable_sriov here, as it will break child devices */
4786         vxge_hw_device_terminate(hldev);
4787         iounmap(vdev->bar0);
4788         pci_release_region(pdev, 0);
4789         pci_disable_device(pdev);
4790         driver_config->config_dev_cnt--;
4791         driver_config->total_dev_cnt--;
4792
4793         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4794                         __func__, __LINE__);
4795         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4796                              __LINE__);
4797 }
4798
4799 static struct pci_error_handlers vxge_err_handler = {
4800         .error_detected = vxge_io_error_detected,
4801         .slot_reset = vxge_io_slot_reset,
4802         .resume = vxge_io_resume,
4803 };
4804
4805 static struct pci_driver vxge_driver = {
4806         .name = VXGE_DRIVER_NAME,
4807         .id_table = vxge_id_table,
4808         .probe = vxge_probe,
4809         .remove = __devexit_p(vxge_remove),
4810 #ifdef CONFIG_PM
4811         .suspend = vxge_pm_suspend,
4812         .resume = vxge_pm_resume,
4813 #endif
4814         .err_handler = &vxge_err_handler,
4815 };
4816
4817 static int __init
4818 vxge_starter(void)
4819 {
4820         int ret = 0;
4821
4822         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4823         pr_info("Driver version: %s\n", DRV_VERSION);
4824
4825         verify_bandwidth();
4826
4827         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4828         if (!driver_config)
4829                 return -ENOMEM;
4830
4831         ret = pci_register_driver(&vxge_driver);
4832         if (ret) {
4833                 kfree(driver_config);
4834                 goto err;
4835         }
4836
4837         if (driver_config->config_dev_cnt &&
4838            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4839                 vxge_debug_init(VXGE_ERR,
4840                         "%s: Configured %d of %d devices",
4841                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4842                         driver_config->total_dev_cnt);
4843 err:
4844         return ret;
4845 }
4846
4847 static void __exit
4848 vxge_closer(void)
4849 {
4850         pci_unregister_driver(&vxge_driver);
4851         kfree(driver_config);
4852 }
4853 module_init(vxge_starter);
4854 module_exit(vxge_closer);