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/if_vlan.h>
  47 #include <linux/pci.h>
  48 #include <linux/slab.h>
  49 #include <linux/tcp.h>
  50 #include <net/ip.h>
  51 #include <linux/netdevice.h>
  52 #include <linux/etherdevice.h>
  53 #include <linux/firmware.h>
  54 #include <linux/net_tstamp.h>
  55 #include "vxge-main.h"
  56 #include "vxge-reg.h"
  57
  58 MODULE_LICENSE("Dual BSD/GPL");
  59 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  60         "Virtualized Server Adapter");
  61
  62 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
  63         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  64         PCI_ANY_ID},
  65         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  66         PCI_ANY_ID},
  67         {0}
  68 };
  69
  70 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  71
  72 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  73 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  74 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  75 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  76 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  77 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  78
  79 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  80                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  81 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  82         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  83 module_param_array(bw_percentage, uint, NULL, 0);
  84
  85 static struct vxge_drv_config *driver_config;
  86
  87 static inline int is_vxge_card_up(struct vxgedev *vdev)
  88 {
  89         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  90 }
  91
  92 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  93 {
  94         struct sk_buff **skb_ptr = NULL;
  95         struct sk_buff **temp;
  96 #define NR_SKB_COMPLETED 128
  97         struct sk_buff *completed[NR_SKB_COMPLETED];
  98         int more;
  99
 100         do {
 101                 more = 0;
 102                 skb_ptr = completed;
 103
 104                 if (__netif_tx_trylock(fifo->txq)) {
 105                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 106                                                 NR_SKB_COMPLETED, &more);
 107                         __netif_tx_unlock(fifo->txq);
 108                 }
 109
 110                 /* free SKBs */
 111                 for (temp = completed; temp != skb_ptr; temp++)
 112                         dev_kfree_skb_irq(*temp);
 113         } while (more);
 114 }
 115
 116 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 117 {
 118         int i;
 119
 120         /* Complete all transmits */
 121         for (i = 0; i < vdev->no_of_vpath; i++)
 122                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 123 }
 124
 125 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 126 {
 127         int i;
 128         struct vxge_ring *ring;
 129
 130         /* Complete all receives*/
 131         for (i = 0; i < vdev->no_of_vpath; i++) {
 132                 ring = &vdev->vpaths[i].ring;
 133                 vxge_hw_vpath_poll_rx(ring->handle);
 134         }
 135 }
 136
 137 /*
 138  * vxge_callback_link_up
 139  *
 140  * This function is called during interrupt context to notify link up state
 141  * change.
 142  */
 143 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
 144 {
 145         struct net_device *dev = hldev->ndev;
 146         struct vxgedev *vdev = netdev_priv(dev);
 147
 148         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 149                 vdev->ndev->name, __func__, __LINE__);
 150         netdev_notice(vdev->ndev, "Link Up\n");
 151         vdev->stats.link_up++;
 152
 153         netif_carrier_on(vdev->ndev);
 154         netif_tx_wake_all_queues(vdev->ndev);
 155
 156         vxge_debug_entryexit(VXGE_TRACE,
 157                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 158 }
 159
 160 /*
 161  * vxge_callback_link_down
 162  *
 163  * This function is called during interrupt context to notify link down state
 164  * change.
 165  */
 166 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
 167 {
 168         struct net_device *dev = hldev->ndev;
 169         struct vxgedev *vdev = netdev_priv(dev);
 170
 171         vxge_debug_entryexit(VXGE_TRACE,
 172                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 173         netdev_notice(vdev->ndev, "Link Down\n");
 174
 175         vdev->stats.link_down++;
 176         netif_carrier_off(vdev->ndev);
 177         netif_tx_stop_all_queues(vdev->ndev);
 178
 179         vxge_debug_entryexit(VXGE_TRACE,
 180                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 181 }
 182
 183 /*
 184  * vxge_rx_alloc
 185  *
 186  * Allocate SKB.
 187  */
 188 static struct sk_buff *
 189 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 190 {
 191         struct net_device    *dev;
 192         struct sk_buff       *skb;
 193         struct vxge_rx_priv *rx_priv;
 194
 195         dev = ring->ndev;
 196         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 197                 ring->ndev->name, __func__, __LINE__);
 198
 199         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 200
 201         /* try to allocate skb first. this one may fail */
 202         skb = netdev_alloc_skb(dev, skb_size +
 203         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 204         if (skb == NULL) {
 205                 vxge_debug_mem(VXGE_ERR,
 206                         "%s: out of memory to allocate SKB", dev->name);
 207                 ring->stats.skb_alloc_fail++;
 208                 return NULL;
 209         }
 210
 211         vxge_debug_mem(VXGE_TRACE,
 212                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 213                 __func__, __LINE__, skb);
 214
 215         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 216
 217         rx_priv->skb = skb;
 218         rx_priv->skb_data = NULL;
 219         rx_priv->data_size = skb_size;
 220         vxge_debug_entryexit(VXGE_TRACE,
 221                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 222
 223         return skb;
 224 }
 225
 226 /*
 227  * vxge_rx_map
 228  */
 229 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 230 {
 231         struct vxge_rx_priv *rx_priv;
 232         dma_addr_t dma_addr;
 233
 234         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 235                 ring->ndev->name, __func__, __LINE__);
 236         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 237
 238         rx_priv->skb_data = rx_priv->skb->data;
 239         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 240                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 241
 242         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 243                 ring->stats.pci_map_fail++;
 244                 return -EIO;
 245         }
 246         vxge_debug_mem(VXGE_TRACE,
 247                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 248                 ring->ndev->name, __func__, __LINE__,
 249                 (unsigned long long)dma_addr);
 250         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 251
 252         rx_priv->data_dma = dma_addr;
 253         vxge_debug_entryexit(VXGE_TRACE,
 254                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 255
 256         return 0;
 257 }
 258
 259 /*
 260  * vxge_rx_initial_replenish
 261  * Allocation of RxD as an initial replenish procedure.
 262  */
 263 static enum vxge_hw_status
 264 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 265 {
 266         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 267         struct vxge_rx_priv *rx_priv;
 268
 269         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 270                 ring->ndev->name, __func__, __LINE__);
 271         if (vxge_rx_alloc(dtrh, ring,
 272                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 273                 return VXGE_HW_FAIL;
 274
 275         if (vxge_rx_map(dtrh, ring)) {
 276                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 277                 dev_kfree_skb(rx_priv->skb);
 278
 279                 return VXGE_HW_FAIL;
 280         }
 281         vxge_debug_entryexit(VXGE_TRACE,
 282                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 283
 284         return VXGE_HW_OK;
 285 }
 286
 287 static inline void
 288 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 289                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 290 {
 291
 292         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 293                         ring->ndev->name, __func__, __LINE__);
 294         skb_record_rx_queue(skb, ring->driver_id);
 295         skb->protocol = eth_type_trans(skb, ring->ndev);
 296
 297         ring->stats.rx_frms++;
 298         ring->stats.rx_bytes += pkt_length;
 299
 300         if (skb->pkt_type == PACKET_MULTICAST)
 301                 ring->stats.rx_mcast++;
 302
 303         vxge_debug_rx(VXGE_TRACE,
 304                 "%s: %s:%d  skb protocol = %d",
 305                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 306
 307         if (ring->gro_enable) {
 308                 if (ring->vlgrp && ext_info->vlan &&
 309                         (ring->vlan_tag_strip ==
 310                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 311                         vlan_gro_receive(ring->napi_p, ring->vlgrp,
 312                                         ext_info->vlan, skb);
 313                 else
 314                         napi_gro_receive(ring->napi_p, skb);
 315         } else {
 316                 if (ring->vlgrp && vlan &&
 317                         (ring->vlan_tag_strip ==
 318                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 319                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 320                 else
 321                         netif_receive_skb(skb);
 322         }
 323         vxge_debug_entryexit(VXGE_TRACE,
 324                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 325 }
 326
 327 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 328                                     struct vxge_rx_priv *rx_priv)
 329 {
 330         pci_dma_sync_single_for_device(ring->pdev,
 331                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 332
 333         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 334         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 335 }
 336
 337 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 338                              void *post_dtr, struct __vxge_hw_ring *ringh)
 339 {
 340         int dtr_count = *dtr_cnt;
 341         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 342                 if (*first_dtr)
 343                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 344                 *first_dtr = post_dtr;
 345         } else
 346                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 347         dtr_count++;
 348         *dtr_cnt = dtr_count;
 349 }
 350
 351 /*
 352  * vxge_rx_1b_compl
 353  *
 354  * If the interrupt is because of a received frame or if the receive ring
 355  * contains fresh as yet un-processed frames, this function is called.
 356  */
 357 static enum vxge_hw_status
 358 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 359                  u8 t_code, void *userdata)
 360 {
 361         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 362         struct net_device *dev = ring->ndev;
 363         unsigned int dma_sizes;
 364         void *first_dtr = NULL;
 365         int dtr_cnt = 0;
 366         int data_size;
 367         dma_addr_t data_dma;
 368         int pkt_length;
 369         struct sk_buff *skb;
 370         struct vxge_rx_priv *rx_priv;
 371         struct vxge_hw_ring_rxd_info ext_info;
 372         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 373                 ring->ndev->name, __func__, __LINE__);
 374         ring->pkts_processed = 0;
 375
 376         vxge_hw_ring_replenish(ringh);
 377
 378         do {
 379                 prefetch((char *)dtr + L1_CACHE_BYTES);
 380                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 381                 skb = rx_priv->skb;
 382                 data_size = rx_priv->data_size;
 383                 data_dma = rx_priv->data_dma;
 384                 prefetch(rx_priv->skb_data);
 385
 386                 vxge_debug_rx(VXGE_TRACE,
 387                         "%s: %s:%d  skb = 0x%p",
 388                         ring->ndev->name, __func__, __LINE__, skb);
 389
 390                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 391                 pkt_length = dma_sizes;
 392
 393                 pkt_length -= ETH_FCS_LEN;
 394
 395                 vxge_debug_rx(VXGE_TRACE,
 396                         "%s: %s:%d  Packet Length = %d",
 397                         ring->ndev->name, __func__, __LINE__, pkt_length);
 398
 399                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 400
 401                 /* check skb validity */
 402                 vxge_assert(skb);
 403
 404                 prefetch((char *)skb + L1_CACHE_BYTES);
 405                 if (unlikely(t_code)) {
 406                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 407                                 VXGE_HW_OK) {
 408
 409                                 ring->stats.rx_errors++;
 410                                 vxge_debug_rx(VXGE_TRACE,
 411                                         "%s: %s :%d Rx T_code is %d",
 412                                         ring->ndev->name, __func__,
 413                                         __LINE__, t_code);
 414
 415                                 /* If the t_code is not supported and if the
 416                                  * t_code is other than 0x5 (unparseable packet
 417                                  * such as unknown UPV6 header), Drop it !!!
 418                                  */
 419                                 vxge_re_pre_post(dtr, ring, rx_priv);
 420
 421                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 422                                 ring->stats.rx_dropped++;
 423                                 continue;
 424                         }
 425                 }
 426
 427                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 428                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 429                                 if (!vxge_rx_map(dtr, ring)) {
 430                                         skb_put(skb, pkt_length);
 431
 432                                         pci_unmap_single(ring->pdev, data_dma,
 433                                                 data_size, PCI_DMA_FROMDEVICE);
 434
 435                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 436                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 437                                                 ringh);
 438                                 } else {
 439                                         dev_kfree_skb(rx_priv->skb);
 440                                         rx_priv->skb = skb;
 441                                         rx_priv->data_size = data_size;
 442                                         vxge_re_pre_post(dtr, ring, rx_priv);
 443
 444                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 445                                                 ringh);
 446                                         ring->stats.rx_dropped++;
 447                                         break;
 448                                 }
 449                         } else {
 450                                 vxge_re_pre_post(dtr, ring, rx_priv);
 451
 452                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 453                                 ring->stats.rx_dropped++;
 454                                 break;
 455                         }
 456                 } else {
 457                         struct sk_buff *skb_up;
 458
 459                         skb_up = netdev_alloc_skb(dev, pkt_length +
 460                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 461                         if (skb_up != NULL) {
 462                                 skb_reserve(skb_up,
 463                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 464
 465                                 pci_dma_sync_single_for_cpu(ring->pdev,
 466                                         data_dma, data_size,
 467                                         PCI_DMA_FROMDEVICE);
 468
 469                                 vxge_debug_mem(VXGE_TRACE,
 470                                         "%s: %s:%d  skb_up = %p",
 471                                         ring->ndev->name, __func__,
 472                                         __LINE__, skb);
 473                                 memcpy(skb_up->data, skb->data, pkt_length);
 474
 475                                 vxge_re_pre_post(dtr, ring, rx_priv);
 476
 477                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 478                                         ringh);
 479                                 /* will netif_rx small SKB instead */
 480                                 skb = skb_up;
 481                                 skb_put(skb, pkt_length);
 482                         } else {
 483                                 vxge_re_pre_post(dtr, ring, rx_priv);
 484
 485                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 486                                 vxge_debug_rx(VXGE_ERR,
 487                                         "%s: vxge_rx_1b_compl: out of "
 488                                         "memory", dev->name);
 489                                 ring->stats.skb_alloc_fail++;
 490                                 break;
 491                         }
 492                 }
 493
 494                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 495                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 496                     ring->rx_csum && /* Offload Rx side CSUM */
 497                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 498                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 499                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 500                 else
 501                         skb_checksum_none_assert(skb);
 502
 503
 504                 if (ring->rx_hwts) {
 505                         struct skb_shared_hwtstamps *skb_hwts;
 506                         u32 ns = *(u32 *)(skb->head + pkt_length);
 507
 508                         skb_hwts = skb_hwtstamps(skb);
 509                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 510                         skb_hwts->syststamp.tv64 = 0;
 511                 }
 512
 513                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 514                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 515                  * if rss is disabled/enabled, so key off of that.
 516                  */
 517                 if (ext_info.rth_value)
 518                         skb->rxhash = ext_info.rth_value;
 519
 520                 vxge_rx_complete(ring, skb, ext_info.vlan,
 521                         pkt_length, &ext_info);
 522
 523                 ring->budget--;
 524                 ring->pkts_processed++;
 525                 if (!ring->budget)
 526                         break;
 527
 528         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 529                 &t_code) == VXGE_HW_OK);
 530
 531         if (first_dtr)
 532                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 533
 534         vxge_debug_entryexit(VXGE_TRACE,
 535                                 "%s:%d  Exiting...",
 536                                 __func__, __LINE__);
 537         return VXGE_HW_OK;
 538 }
 539
 540 /*
 541  * vxge_xmit_compl
 542  *
 543  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 544  * this function is called. It identifies the last TxD whose buffer was
 545  * freed and frees all skbs whose data have already DMA'ed into the NICs
 546  * internal memory.
 547  */
 548 static enum vxge_hw_status
 549 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 550                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 551                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 552 {
 553         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 554         struct sk_buff *skb, **done_skb = *skb_ptr;
 555         int pkt_cnt = 0;
 556
 557         vxge_debug_entryexit(VXGE_TRACE,
 558                 "%s:%d Entered....", __func__, __LINE__);
 559
 560         do {
 561                 int frg_cnt;
 562                 skb_frag_t *frag;
 563                 int i = 0, j;
 564                 struct vxge_tx_priv *txd_priv =
 565                         vxge_hw_fifo_txdl_private_get(dtr);
 566
 567                 skb = txd_priv->skb;
 568                 frg_cnt = skb_shinfo(skb)->nr_frags;
 569                 frag = &skb_shinfo(skb)->frags[0];
 570
 571                 vxge_debug_tx(VXGE_TRACE,
 572                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 573                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 574                                 __LINE__, fifo_hw, dtr, t_code);
 575                 /* check skb validity */
 576                 vxge_assert(skb);
 577                 vxge_debug_tx(VXGE_TRACE,
 578                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 579                         fifo->ndev->name, __func__, __LINE__,
 580                         skb, txd_priv, frg_cnt);
 581                 if (unlikely(t_code)) {
 582                         fifo->stats.tx_errors++;
 583                         vxge_debug_tx(VXGE_ERR,
 584                                 "%s: tx: dtr %p completed due to "
 585                                 "error t_code %01x", fifo->ndev->name,
 586                                 dtr, t_code);
 587                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 588                 }
 589
 590                 /*  for unfragmented skb */
 591                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 592                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 593
 594                 for (j = 0; j < frg_cnt; j++) {
 595                         pci_unmap_page(fifo->pdev,
 596                                         txd_priv->dma_buffers[i++],
 597                                         frag->size, PCI_DMA_TODEVICE);
 598                         frag += 1;
 599                 }
 600
 601                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 602
 603                 /* Updating the statistics block */
 604                 fifo->stats.tx_frms++;
 605                 fifo->stats.tx_bytes += skb->len;
 606
 607                 *done_skb++ = skb;
 608
 609                 if (--nr_skb <= 0) {
 610                         *more = 1;
 611                         break;
 612                 }
 613
 614                 pkt_cnt++;
 615                 if (pkt_cnt > fifo->indicate_max_pkts)
 616                         break;
 617
 618         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 619                                 &dtr, &t_code) == VXGE_HW_OK);
 620
 621         *skb_ptr = done_skb;
 622         if (netif_tx_queue_stopped(fifo->txq))
 623                 netif_tx_wake_queue(fifo->txq);
 624
 625         vxge_debug_entryexit(VXGE_TRACE,
 626                                 "%s: %s:%d  Exiting...",
 627                                 fifo->ndev->name, __func__, __LINE__);
 628         return VXGE_HW_OK;
 629 }
 630
 631 /* select a vpath to transmit the packet */
 632 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 633 {
 634         u16 queue_len, counter = 0;
 635         if (skb->protocol == htons(ETH_P_IP)) {
 636                 struct iphdr *ip;
 637                 struct tcphdr *th;
 638
 639                 ip = ip_hdr(skb);
 640
 641                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 642                         th = (struct tcphdr *)(((unsigned char *)ip) +
 643                                         ip->ihl*4);
 644
 645                         queue_len = vdev->no_of_vpath;
 646                         counter = (ntohs(th->source) +
 647                                 ntohs(th->dest)) &
 648                                 vdev->vpath_selector[queue_len - 1];
 649                         if (counter >= queue_len)
 650                                 counter = queue_len - 1;
 651                 }
 652         }
 653         return counter;
 654 }
 655
 656 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 657         struct vxge_vpath *vpath, u64 del_mac)
 658 {
 659         struct list_head *entry, *next;
 660         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 661                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 662                         return TRUE;
 663         }
 664         return FALSE;
 665 }
 666
 667 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
 668 {
 669         struct vxge_mac_addrs *new_mac_entry;
 670         u8 *mac_address = NULL;
 671
 672         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
 673                 return TRUE;
 674
 675         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
 676         if (!new_mac_entry) {
 677                 vxge_debug_mem(VXGE_ERR,
 678                         "%s: memory allocation failed",
 679                         VXGE_DRIVER_NAME);
 680                 return FALSE;
 681         }
 682
 683         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
 684
 685         /* Copy the new mac address to the list */
 686         mac_address = (u8 *)&new_mac_entry->macaddr;
 687         memcpy(mac_address, mac->macaddr, ETH_ALEN);
 688
 689         new_mac_entry->state = mac->state;
 690         vpath->mac_addr_cnt++;
 691
 692         /* Is this a multicast address */
 693         if (0x01 & mac->macaddr[0])
 694                 vpath->mcast_addr_cnt++;
 695
 696         return TRUE;
 697 }
 698
 699 /* Add a mac address to DA table */
 700 static enum vxge_hw_status
 701 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
 702 {
 703         enum vxge_hw_status status = VXGE_HW_OK;
 704         struct vxge_vpath *vpath;
 705         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
 706
 707         if (0x01 & mac->macaddr[0]) /* multicast address */
 708                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
 709         else
 710                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
 711
 712         vpath = &vdev->vpaths[mac->vpath_no];
 713         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
 714                                                 mac->macmask, duplicate_mode);
 715         if (status != VXGE_HW_OK) {
 716                 vxge_debug_init(VXGE_ERR,
 717                         "DA config add entry failed for vpath:%d",
 718                         vpath->device_id);
 719         } else
 720                 if (FALSE == vxge_mac_list_add(vpath, mac))
 721                         status = -EPERM;
 722
 723         return status;
 724 }
 725
 726 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 727 {
 728         struct macInfo mac_info;
 729         u8 *mac_address = NULL;
 730         u64 mac_addr = 0, vpath_vector = 0;
 731         int vpath_idx = 0;
 732         enum vxge_hw_status status = VXGE_HW_OK;
 733         struct vxge_vpath *vpath = NULL;
 734         struct __vxge_hw_device *hldev;
 735
 736         hldev = pci_get_drvdata(vdev->pdev);
 737
 738         mac_address = (u8 *)&mac_addr;
 739         memcpy(mac_address, mac_header, ETH_ALEN);
 740
 741         /* Is this mac address already in the list? */
 742         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 743                 vpath = &vdev->vpaths[vpath_idx];
 744                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 745                         return vpath_idx;
 746         }
 747
 748         memset(&mac_info, 0, sizeof(struct macInfo));
 749         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 750
 751         /* Any vpath has room to add mac address to its da table? */
 752         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 753                 vpath = &vdev->vpaths[vpath_idx];
 754                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 755                         /* Add this mac address to this vpath */
 756                         mac_info.vpath_no = vpath_idx;
 757                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 758                         status = vxge_add_mac_addr(vdev, &mac_info);
 759                         if (status != VXGE_HW_OK)
 760                                 return -EPERM;
 761                         return vpath_idx;
 762                 }
 763         }
 764
 765         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 766         vpath_idx = 0;
 767         mac_info.vpath_no = vpath_idx;
 768         /* Is the first vpath already selected as catch-basin ? */
 769         vpath = &vdev->vpaths[vpath_idx];
 770         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 771                 /* Add this mac address to this vpath */
 772                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 773                         return -EPERM;
 774                 return vpath_idx;
 775         }
 776
 777         /* Select first vpath as catch-basin */
 778         vpath_vector = vxge_mBIT(vpath->device_id);
 779         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 780                                 vxge_hw_mgmt_reg_type_mrpcim,
 781                                 0,
 782                                 (ulong)offsetof(
 783                                         struct vxge_hw_mrpcim_reg,
 784                                         rts_mgr_cbasin_cfg),
 785                                 vpath_vector);
 786         if (status != VXGE_HW_OK) {
 787                 vxge_debug_tx(VXGE_ERR,
 788                         "%s: Unable to set the vpath-%d in catch-basin mode",
 789                         VXGE_DRIVER_NAME, vpath->device_id);
 790                 return -EPERM;
 791         }
 792
 793         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 794                 return -EPERM;
 795
 796         return vpath_idx;
 797 }
 798
 799 /**
 800  * vxge_xmit
 801  * @skb : the socket buffer containing the Tx data.
 802  * @dev : device pointer.
 803  *
 804  * This function is the Tx entry point of the driver. Neterion NIC supports
 805  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 806 */
 807 static netdev_tx_t
 808 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 809 {
 810         struct vxge_fifo *fifo = NULL;
 811         void *dtr_priv;
 812         void *dtr = NULL;
 813         struct vxgedev *vdev = NULL;
 814         enum vxge_hw_status status;
 815         int frg_cnt, first_frg_len;
 816         skb_frag_t *frag;
 817         int i = 0, j = 0, avail;
 818         u64 dma_pointer;
 819         struct vxge_tx_priv *txdl_priv = NULL;
 820         struct __vxge_hw_fifo *fifo_hw;
 821         int offload_type;
 822         int vpath_no = 0;
 823
 824         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 825                         dev->name, __func__, __LINE__);
 826
 827         /* A buffer with no data will be dropped */
 828         if (unlikely(skb->len <= 0)) {
 829                 vxge_debug_tx(VXGE_ERR,
 830                         "%s: Buffer has no data..", dev->name);
 831                 dev_kfree_skb(skb);
 832                 return NETDEV_TX_OK;
 833         }
 834
 835         vdev = netdev_priv(dev);
 836
 837         if (unlikely(!is_vxge_card_up(vdev))) {
 838                 vxge_debug_tx(VXGE_ERR,
 839                         "%s: vdev not initialized", dev->name);
 840                 dev_kfree_skb(skb);
 841                 return NETDEV_TX_OK;
 842         }
 843
 844         if (vdev->config.addr_learn_en) {
 845                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 846                 if (vpath_no == -EPERM) {
 847                         vxge_debug_tx(VXGE_ERR,
 848                                 "%s: Failed to store the mac address",
 849                                 dev->name);
 850                         dev_kfree_skb(skb);
 851                         return NETDEV_TX_OK;
 852                 }
 853         }
 854
 855         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 856                 vpath_no = skb_get_queue_mapping(skb);
 857         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 858                 vpath_no = vxge_get_vpath_no(vdev, skb);
 859
 860         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 861
 862         if (vpath_no >= vdev->no_of_vpath)
 863                 vpath_no = 0;
 864
 865         fifo = &vdev->vpaths[vpath_no].fifo;
 866         fifo_hw = fifo->handle;
 867
 868         if (netif_tx_queue_stopped(fifo->txq))
 869                 return NETDEV_TX_BUSY;
 870
 871         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 872         if (avail == 0) {
 873                 vxge_debug_tx(VXGE_ERR,
 874                         "%s: No free TXDs available", dev->name);
 875                 fifo->stats.txd_not_free++;
 876                 goto _exit0;
 877         }
 878
 879         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 880          * completion will resume the queue.
 881          */
 882         if (avail == 1)
 883                 netif_tx_stop_queue(fifo->txq);
 884
 885         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 886         if (unlikely(status != VXGE_HW_OK)) {
 887                 vxge_debug_tx(VXGE_ERR,
 888                    "%s: Out of descriptors .", dev->name);
 889                 fifo->stats.txd_out_of_desc++;
 890                 goto _exit0;
 891         }
 892
 893         vxge_debug_tx(VXGE_TRACE,
 894                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 895                 dev->name, __func__, __LINE__,
 896                 fifo_hw, dtr, dtr_priv);
 897
 898         if (vlan_tx_tag_present(skb)) {
 899                 u16 vlan_tag = vlan_tx_tag_get(skb);
 900                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 901         }
 902
 903         first_frg_len = skb_headlen(skb);
 904
 905         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 906                                 PCI_DMA_TODEVICE);
 907
 908         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 909                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 910                 fifo->stats.pci_map_fail++;
 911                 goto _exit0;
 912         }
 913
 914         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 915         txdl_priv->skb = skb;
 916         txdl_priv->dma_buffers[j] = dma_pointer;
 917
 918         frg_cnt = skb_shinfo(skb)->nr_frags;
 919         vxge_debug_tx(VXGE_TRACE,
 920                         "%s: %s:%d skb = %p txdl_priv = %p "
 921                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 922                         __func__, __LINE__, skb, txdl_priv,
 923                         frg_cnt, (unsigned long long)dma_pointer);
 924
 925         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 926                 first_frg_len);
 927
 928         frag = &skb_shinfo(skb)->frags[0];
 929         for (i = 0; i < frg_cnt; i++) {
 930                 /* ignore 0 length fragment */
 931                 if (!frag->size)
 932                         continue;
 933
 934                 dma_pointer = (u64) pci_map_page(fifo->pdev, frag->page,
 935                                 frag->page_offset, frag->size,
 936                                 PCI_DMA_TODEVICE);
 937
 938                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 939                         goto _exit2;
 940                 vxge_debug_tx(VXGE_TRACE,
 941                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 942                                 dev->name, __func__, __LINE__, i,
 943                                 (unsigned long long)dma_pointer);
 944
 945                 txdl_priv->dma_buffers[j] = dma_pointer;
 946                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 947                                         frag->size);
 948                 frag += 1;
 949         }
 950
 951         offload_type = vxge_offload_type(skb);
 952
 953         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 954                 int mss = vxge_tcp_mss(skb);
 955                 if (mss) {
 956                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 957                                 dev->name, __func__, __LINE__, mss);
 958                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 959                 } else {
 960                         vxge_assert(skb->len <=
 961                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 962                         vxge_assert(0);
 963                         goto _exit1;
 964                 }
 965         }
 966
 967         if (skb->ip_summed == CHECKSUM_PARTIAL)
 968                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 969                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 970                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 971                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 972
 973         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 974
 975         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 976                 dev->name, __func__, __LINE__);
 977         return NETDEV_TX_OK;
 978
 979 _exit2:
 980         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 981 _exit1:
 982         j = 0;
 983         frag = &skb_shinfo(skb)->frags[0];
 984
 985         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 986                         skb_headlen(skb), PCI_DMA_TODEVICE);
 987
 988         for (; j < i; j++) {
 989                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 990                         frag->size, PCI_DMA_TODEVICE);
 991                 frag += 1;
 992         }
 993
 994         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 995 _exit0:
 996         netif_tx_stop_queue(fifo->txq);
 997         dev_kfree_skb(skb);
 998
 999         return NETDEV_TX_OK;
1000 }
1001
1002 /*
1003  * vxge_rx_term
1004  *
1005  * Function will be called by hw function to abort all outstanding receive
1006  * descriptors.
1007  */
1008 static void
1009 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1010 {
1011         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1012         struct vxge_rx_priv *rx_priv =
1013                 vxge_hw_ring_rxd_private_get(dtrh);
1014
1015         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1016                         ring->ndev->name, __func__, __LINE__);
1017         if (state != VXGE_HW_RXD_STATE_POSTED)
1018                 return;
1019
1020         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1021                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1022
1023         dev_kfree_skb(rx_priv->skb);
1024         rx_priv->skb_data = NULL;
1025
1026         vxge_debug_entryexit(VXGE_TRACE,
1027                 "%s: %s:%d  Exiting...",
1028                 ring->ndev->name, __func__, __LINE__);
1029 }
1030
1031 /*
1032  * vxge_tx_term
1033  *
1034  * Function will be called to abort all outstanding tx descriptors
1035  */
1036 static void
1037 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1038 {
1039         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1040         skb_frag_t *frag;
1041         int i = 0, j, frg_cnt;
1042         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1043         struct sk_buff *skb = txd_priv->skb;
1044
1045         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1046
1047         if (state != VXGE_HW_TXDL_STATE_POSTED)
1048                 return;
1049
1050         /* check skb validity */
1051         vxge_assert(skb);
1052         frg_cnt = skb_shinfo(skb)->nr_frags;
1053         frag = &skb_shinfo(skb)->frags[0];
1054
1055         /*  for unfragmented skb */
1056         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1057                 skb_headlen(skb), PCI_DMA_TODEVICE);
1058
1059         for (j = 0; j < frg_cnt; j++) {
1060                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1061                                frag->size, PCI_DMA_TODEVICE);
1062                 frag += 1;
1063         }
1064
1065         dev_kfree_skb(skb);
1066
1067         vxge_debug_entryexit(VXGE_TRACE,
1068                 "%s:%d  Exiting...", __func__, __LINE__);
1069 }
1070
1071 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1072 {
1073         struct list_head *entry, *next;
1074         u64 del_mac = 0;
1075         u8 *mac_address = (u8 *) (&del_mac);
1076
1077         /* Copy the mac address to delete from the list */
1078         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1079
1080         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1081                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1082                         list_del(entry);
1083                         kfree((struct vxge_mac_addrs *)entry);
1084                         vpath->mac_addr_cnt--;
1085
1086                         /* Is this a multicast address */
1087                         if (0x01 & mac->macaddr[0])
1088                                 vpath->mcast_addr_cnt--;
1089                         return TRUE;
1090                 }
1091         }
1092
1093         return FALSE;
1094 }
1095
1096 /* delete a mac address from DA table */
1097 static enum vxge_hw_status
1098 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1099 {
1100         enum vxge_hw_status status = VXGE_HW_OK;
1101         struct vxge_vpath *vpath;
1102
1103         vpath = &vdev->vpaths[mac->vpath_no];
1104         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1105                                                 mac->macmask);
1106         if (status != VXGE_HW_OK) {
1107                 vxge_debug_init(VXGE_ERR,
1108                         "DA config delete entry failed for vpath:%d",
1109                         vpath->device_id);
1110         } else
1111                 vxge_mac_list_del(vpath, mac);
1112         return status;
1113 }
1114
1115 /**
1116  * vxge_set_multicast
1117  * @dev: pointer to the device structure
1118  *
1119  * Entry point for multicast address enable/disable
1120  * This function is a driver entry point which gets called by the kernel
1121  * whenever multicast addresses must be enabled/disabled. This also gets
1122  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1123  * determine, if multicast address must be enabled or if promiscuous mode
1124  * is to be disabled etc.
1125  */
1126 static void vxge_set_multicast(struct net_device *dev)
1127 {
1128         struct netdev_hw_addr *ha;
1129         struct vxgedev *vdev;
1130         int i, mcast_cnt = 0;
1131         struct __vxge_hw_device *hldev;
1132         struct vxge_vpath *vpath;
1133         enum vxge_hw_status status = VXGE_HW_OK;
1134         struct macInfo mac_info;
1135         int vpath_idx = 0;
1136         struct vxge_mac_addrs *mac_entry;
1137         struct list_head *list_head;
1138         struct list_head *entry, *next;
1139         u8 *mac_address = NULL;
1140
1141         vxge_debug_entryexit(VXGE_TRACE,
1142                 "%s:%d", __func__, __LINE__);
1143
1144         vdev = netdev_priv(dev);
1145         hldev = (struct __vxge_hw_device  *)vdev->devh;
1146
1147         if (unlikely(!is_vxge_card_up(vdev)))
1148                 return;
1149
1150         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1151                 for (i = 0; i < vdev->no_of_vpath; i++) {
1152                         vpath = &vdev->vpaths[i];
1153                         vxge_assert(vpath->is_open);
1154                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1155                         if (status != VXGE_HW_OK)
1156                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1157                                                 "multicast, status %d", status);
1158                         vdev->all_multi_flg = 1;
1159                 }
1160         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1161                 for (i = 0; i < vdev->no_of_vpath; i++) {
1162                         vpath = &vdev->vpaths[i];
1163                         vxge_assert(vpath->is_open);
1164                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1165                         if (status != VXGE_HW_OK)
1166                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1167                                                 "multicast, status %d", status);
1168                         vdev->all_multi_flg = 0;
1169                 }
1170         }
1171
1172
1173         if (!vdev->config.addr_learn_en) {
1174                 for (i = 0; i < vdev->no_of_vpath; i++) {
1175                         vpath = &vdev->vpaths[i];
1176                         vxge_assert(vpath->is_open);
1177
1178                         if (dev->flags & IFF_PROMISC)
1179                                 status = vxge_hw_vpath_promisc_enable(
1180                                         vpath->handle);
1181                         else
1182                                 status = vxge_hw_vpath_promisc_disable(
1183                                         vpath->handle);
1184                         if (status != VXGE_HW_OK)
1185                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1186                                         ", status %d", dev->flags&IFF_PROMISC ?
1187                                         "enable" : "disable", status);
1188                 }
1189         }
1190
1191         memset(&mac_info, 0, sizeof(struct macInfo));
1192         /* Update individual M_CAST address list */
1193         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1194                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1195                 list_head = &vdev->vpaths[0].mac_addr_list;
1196                 if ((netdev_mc_count(dev) +
1197                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1198                                 vdev->vpaths[0].max_mac_addr_cnt)
1199                         goto _set_all_mcast;
1200
1201                 /* Delete previous MC's */
1202                 for (i = 0; i < mcast_cnt; i++) {
1203                         list_for_each_safe(entry, next, list_head) {
1204                                 mac_entry = (struct vxge_mac_addrs *)entry;
1205                                 /* Copy the mac address to delete */
1206                                 mac_address = (u8 *)&mac_entry->macaddr;
1207                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1208
1209                                 /* Is this a multicast address */
1210                                 if (0x01 & mac_info.macaddr[0]) {
1211                                         for (vpath_idx = 0; vpath_idx <
1212                                                 vdev->no_of_vpath;
1213                                                 vpath_idx++) {
1214                                                 mac_info.vpath_no = vpath_idx;
1215                                                 status = vxge_del_mac_addr(
1216                                                                 vdev,
1217                                                                 &mac_info);
1218                                         }
1219                                 }
1220                         }
1221                 }
1222
1223                 /* Add new ones */
1224                 netdev_for_each_mc_addr(ha, dev) {
1225                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1226                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1227                                         vpath_idx++) {
1228                                 mac_info.vpath_no = vpath_idx;
1229                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1230                                 status = vxge_add_mac_addr(vdev, &mac_info);
1231                                 if (status != VXGE_HW_OK) {
1232                                         vxge_debug_init(VXGE_ERR,
1233                                                 "%s:%d Setting individual"
1234                                                 "multicast address failed",
1235                                                 __func__, __LINE__);
1236                                         goto _set_all_mcast;
1237                                 }
1238                         }
1239                 }
1240
1241                 return;
1242 _set_all_mcast:
1243                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1244                 /* Delete previous MC's */
1245                 for (i = 0; i < mcast_cnt; i++) {
1246                         list_for_each_safe(entry, next, list_head) {
1247                                 mac_entry = (struct vxge_mac_addrs *)entry;
1248                                 /* Copy the mac address to delete */
1249                                 mac_address = (u8 *)&mac_entry->macaddr;
1250                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1251
1252                                 /* Is this a multicast address */
1253                                 if (0x01 & mac_info.macaddr[0])
1254                                         break;
1255                         }
1256
1257                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1258                                         vpath_idx++) {
1259                                 mac_info.vpath_no = vpath_idx;
1260                                 status = vxge_del_mac_addr(vdev, &mac_info);
1261                         }
1262                 }
1263
1264                 /* Enable all multicast */
1265                 for (i = 0; i < vdev->no_of_vpath; i++) {
1266                         vpath = &vdev->vpaths[i];
1267                         vxge_assert(vpath->is_open);
1268
1269                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1270                         if (status != VXGE_HW_OK) {
1271                                 vxge_debug_init(VXGE_ERR,
1272                                         "%s:%d Enabling all multicasts failed",
1273                                          __func__, __LINE__);
1274                         }
1275                         vdev->all_multi_flg = 1;
1276                 }
1277                 dev->flags |= IFF_ALLMULTI;
1278         }
1279
1280         vxge_debug_entryexit(VXGE_TRACE,
1281                 "%s:%d  Exiting...", __func__, __LINE__);
1282 }
1283
1284 /**
1285  * vxge_set_mac_addr
1286  * @dev: pointer to the device structure
1287  *
1288  * Update entry "0" (default MAC addr)
1289  */
1290 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1291 {
1292         struct sockaddr *addr = p;
1293         struct vxgedev *vdev;
1294         struct __vxge_hw_device *hldev;
1295         enum vxge_hw_status status = VXGE_HW_OK;
1296         struct macInfo mac_info_new, mac_info_old;
1297         int vpath_idx = 0;
1298
1299         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1300
1301         vdev = netdev_priv(dev);
1302         hldev = vdev->devh;
1303
1304         if (!is_valid_ether_addr(addr->sa_data))
1305                 return -EINVAL;
1306
1307         memset(&mac_info_new, 0, sizeof(struct macInfo));
1308         memset(&mac_info_old, 0, sizeof(struct macInfo));
1309
1310         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1311                 __func__, __LINE__);
1312
1313         /* Get the old address */
1314         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1315
1316         /* Copy the new address */
1317         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1318
1319         /* First delete the old mac address from all the vpaths
1320         as we can't specify the index while adding new mac address */
1321         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1322                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1323                 if (!vpath->is_open) {
1324                         /* This can happen when this interface is added/removed
1325                         to the bonding interface. Delete this station address
1326                         from the linked list */
1327                         vxge_mac_list_del(vpath, &mac_info_old);
1328
1329                         /* Add this new address to the linked list
1330                         for later restoring */
1331                         vxge_mac_list_add(vpath, &mac_info_new);
1332
1333                         continue;
1334                 }
1335                 /* Delete the station address */
1336                 mac_info_old.vpath_no = vpath_idx;
1337                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1338         }
1339
1340         if (unlikely(!is_vxge_card_up(vdev))) {
1341                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1342                 return VXGE_HW_OK;
1343         }
1344
1345         /* Set this mac address to all the vpaths */
1346         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1347                 mac_info_new.vpath_no = vpath_idx;
1348                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1349                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1350                 if (status != VXGE_HW_OK)
1351                         return -EINVAL;
1352         }
1353
1354         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1355
1356         return status;
1357 }
1358
1359 /*
1360  * vxge_vpath_intr_enable
1361  * @vdev: pointer to vdev
1362  * @vp_id: vpath for which to enable the interrupts
1363  *
1364  * Enables the interrupts for the vpath
1365 */
1366 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1367 {
1368         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1369         int msix_id = 0;
1370         int tim_msix_id[4] = {0, 1, 0, 0};
1371         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1372
1373         vxge_hw_vpath_intr_enable(vpath->handle);
1374
1375         if (vdev->config.intr_type == INTA)
1376                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1377         else {
1378                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1379                         alarm_msix_id);
1380
1381                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1382                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1383                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1384
1385                 /* enable the alarm vector */
1386                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1387                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1388                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1389         }
1390 }
1391
1392 /*
1393  * vxge_vpath_intr_disable
1394  * @vdev: pointer to vdev
1395  * @vp_id: vpath for which to disable the interrupts
1396  *
1397  * Disables the interrupts for the vpath
1398 */
1399 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1400 {
1401         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1402         struct __vxge_hw_device *hldev;
1403         int msix_id;
1404
1405         hldev = pci_get_drvdata(vdev->pdev);
1406
1407         vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1408
1409         vxge_hw_vpath_intr_disable(vpath->handle);
1410
1411         if (vdev->config.intr_type == INTA)
1412                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1413         else {
1414                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1415                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1416                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1417
1418                 /* disable the alarm vector */
1419                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1420                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1421                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1422         }
1423 }
1424
1425 /* list all mac addresses from DA table */
1426 static enum vxge_hw_status
1427 vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac)
1428 {
1429         enum vxge_hw_status status = VXGE_HW_OK;
1430         unsigned char macmask[ETH_ALEN];
1431         unsigned char macaddr[ETH_ALEN];
1432
1433         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1434                                 macaddr, macmask);
1435         if (status != VXGE_HW_OK) {
1436                 vxge_debug_init(VXGE_ERR,
1437                         "DA config list entry failed for vpath:%d",
1438                         vpath->device_id);
1439                 return status;
1440         }
1441
1442         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1443                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1444                                 macaddr, macmask);
1445                 if (status != VXGE_HW_OK)
1446                         break;
1447         }
1448
1449         return status;
1450 }
1451
1452 /* Store all mac addresses from the list to the DA table */
1453 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1454 {
1455         enum vxge_hw_status status = VXGE_HW_OK;
1456         struct macInfo mac_info;
1457         u8 *mac_address = NULL;
1458         struct list_head *entry, *next;
1459
1460         memset(&mac_info, 0, sizeof(struct macInfo));
1461
1462         if (vpath->is_open) {
1463                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1464                         mac_address =
1465                                 (u8 *)&
1466                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1467                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1468                         ((struct vxge_mac_addrs *)entry)->state =
1469                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1470                         /* does this mac address already exist in da table? */
1471                         status = vxge_search_mac_addr_in_da_table(vpath,
1472                                 &mac_info);
1473                         if (status != VXGE_HW_OK) {
1474                                 /* Add this mac address to the DA table */
1475                                 status = vxge_hw_vpath_mac_addr_add(
1476                                         vpath->handle, mac_info.macaddr,
1477                                         mac_info.macmask,
1478                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1479                                 if (status != VXGE_HW_OK) {
1480                                         vxge_debug_init(VXGE_ERR,
1481                                             "DA add entry failed for vpath:%d",
1482                                             vpath->device_id);
1483                                         ((struct vxge_mac_addrs *)entry)->state
1484                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1485                                 }
1486                         }
1487                 }
1488         }
1489
1490         return status;
1491 }
1492
1493 /* Store all vlan ids from the list to the vid table */
1494 static enum vxge_hw_status
1495 vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1496 {
1497         enum vxge_hw_status status = VXGE_HW_OK;
1498         struct vxgedev *vdev = vpath->vdev;
1499         u16 vid;
1500
1501         if (vdev->vlgrp && vpath->is_open) {
1502
1503                 for (vid = 0; vid < VLAN_N_VID; vid++) {
1504                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1505                                 continue;
1506                         /* Add these vlan to the vid table */
1507                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1508                 }
1509         }
1510
1511         return status;
1512 }
1513
1514 /*
1515  * vxge_reset_vpath
1516  * @vdev: pointer to vdev
1517  * @vp_id: vpath to reset
1518  *
1519  * Resets the vpath
1520 */
1521 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1522 {
1523         enum vxge_hw_status status = VXGE_HW_OK;
1524         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1525         int ret = 0;
1526
1527         /* check if device is down already */
1528         if (unlikely(!is_vxge_card_up(vdev)))
1529                 return 0;
1530
1531         /* is device reset already scheduled */
1532         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1533                 return 0;
1534
1535         if (vpath->handle) {
1536                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1537                         if (is_vxge_card_up(vdev) &&
1538                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1539                                         != VXGE_HW_OK) {
1540                                 vxge_debug_init(VXGE_ERR,
1541                                         "vxge_hw_vpath_recover_from_reset"
1542                                         "failed for vpath:%d", vp_id);
1543                                 return status;
1544                         }
1545                 } else {
1546                         vxge_debug_init(VXGE_ERR,
1547                                 "vxge_hw_vpath_reset failed for"
1548                                 "vpath:%d", vp_id);
1549                                 return status;
1550                 }
1551         } else
1552                 return VXGE_HW_FAIL;
1553
1554         vxge_restore_vpath_mac_addr(vpath);
1555         vxge_restore_vpath_vid_table(vpath);
1556
1557         /* Enable all broadcast */
1558         vxge_hw_vpath_bcast_enable(vpath->handle);
1559
1560         /* Enable all multicast */
1561         if (vdev->all_multi_flg) {
1562                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1563                 if (status != VXGE_HW_OK)
1564                         vxge_debug_init(VXGE_ERR,
1565                                 "%s:%d Enabling multicast failed",
1566                                 __func__, __LINE__);
1567         }
1568
1569         /* Enable the interrupts */
1570         vxge_vpath_intr_enable(vdev, vp_id);
1571
1572         smp_wmb();
1573
1574         /* Enable the flow of traffic through the vpath */
1575         vxge_hw_vpath_enable(vpath->handle);
1576
1577         smp_wmb();
1578         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1579         vpath->ring.last_status = VXGE_HW_OK;
1580
1581         /* Vpath reset done */
1582         clear_bit(vp_id, &vdev->vp_reset);
1583
1584         /* Start the vpath queue */
1585         if (netif_tx_queue_stopped(vpath->fifo.txq))
1586                 netif_tx_wake_queue(vpath->fifo.txq);
1587
1588         return ret;
1589 }
1590
1591 static int do_vxge_reset(struct vxgedev *vdev, int event)
1592 {
1593         enum vxge_hw_status status;
1594         int ret = 0, vp_id, i;
1595
1596         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1597
1598         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1599                 /* check if device is down already */
1600                 if (unlikely(!is_vxge_card_up(vdev)))
1601                         return 0;
1602
1603                 /* is reset already scheduled */
1604                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1605                         return 0;
1606         }
1607
1608         if (event == VXGE_LL_FULL_RESET) {
1609                 netif_carrier_off(vdev->ndev);
1610
1611                 /* wait for all the vpath reset to complete */
1612                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1613                         while (test_bit(vp_id, &vdev->vp_reset))
1614                                 msleep(50);
1615                 }
1616
1617                 netif_carrier_on(vdev->ndev);
1618
1619                 /* if execution mode is set to debug, don't reset the adapter */
1620                 if (unlikely(vdev->exec_mode)) {
1621                         vxge_debug_init(VXGE_ERR,
1622                                 "%s: execution mode is debug, returning..",
1623                                 vdev->ndev->name);
1624                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1625                         netif_tx_stop_all_queues(vdev->ndev);
1626                         return 0;
1627                 }
1628         }
1629
1630         if (event == VXGE_LL_FULL_RESET) {
1631                 vxge_hw_device_wait_receive_idle(vdev->devh);
1632                 vxge_hw_device_intr_disable(vdev->devh);
1633
1634                 switch (vdev->cric_err_event) {
1635                 case VXGE_HW_EVENT_UNKNOWN:
1636                         netif_tx_stop_all_queues(vdev->ndev);
1637                         vxge_debug_init(VXGE_ERR,
1638                                 "fatal: %s: Disabling device due to"
1639                                 "unknown error",
1640                                 vdev->ndev->name);
1641                         ret = -EPERM;
1642                         goto out;
1643                 case VXGE_HW_EVENT_RESET_START:
1644                         break;
1645                 case VXGE_HW_EVENT_RESET_COMPLETE:
1646                 case VXGE_HW_EVENT_LINK_DOWN:
1647                 case VXGE_HW_EVENT_LINK_UP:
1648                 case VXGE_HW_EVENT_ALARM_CLEARED:
1649                 case VXGE_HW_EVENT_ECCERR:
1650                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1651                         ret = -EPERM;
1652                         goto out;
1653                 case VXGE_HW_EVENT_FIFO_ERR:
1654                 case VXGE_HW_EVENT_VPATH_ERR:
1655                         break;
1656                 case VXGE_HW_EVENT_CRITICAL_ERR:
1657                         netif_tx_stop_all_queues(vdev->ndev);
1658                         vxge_debug_init(VXGE_ERR,
1659                                 "fatal: %s: Disabling device due to"
1660                                 "serious error",
1661                                 vdev->ndev->name);
1662                         /* SOP or device reset required */
1663                         /* This event is not currently used */
1664                         ret = -EPERM;
1665                         goto out;
1666                 case VXGE_HW_EVENT_SERR:
1667                         netif_tx_stop_all_queues(vdev->ndev);
1668                         vxge_debug_init(VXGE_ERR,
1669                                 "fatal: %s: Disabling device due to"
1670                                 "serious error",
1671                                 vdev->ndev->name);
1672                         ret = -EPERM;
1673                         goto out;
1674                 case VXGE_HW_EVENT_SRPCIM_SERR:
1675                 case VXGE_HW_EVENT_MRPCIM_SERR:
1676                         ret = -EPERM;
1677                         goto out;
1678                 case VXGE_HW_EVENT_SLOT_FREEZE:
1679                         netif_tx_stop_all_queues(vdev->ndev);
1680                         vxge_debug_init(VXGE_ERR,
1681                                 "fatal: %s: Disabling device due to"
1682                                 "slot freeze",
1683                                 vdev->ndev->name);
1684                         ret = -EPERM;
1685                         goto out;
1686                 default:
1687                         break;
1688
1689                 }
1690         }
1691
1692         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1693                 netif_tx_stop_all_queues(vdev->ndev);
1694
1695         if (event == VXGE_LL_FULL_RESET) {
1696                 status = vxge_reset_all_vpaths(vdev);
1697                 if (status != VXGE_HW_OK) {
1698                         vxge_debug_init(VXGE_ERR,
1699                                 "fatal: %s: can not reset vpaths",
1700                                 vdev->ndev->name);
1701                         ret = -EPERM;
1702                         goto out;
1703                 }
1704         }
1705
1706         if (event == VXGE_LL_COMPL_RESET) {
1707                 for (i = 0; i < vdev->no_of_vpath; i++)
1708                         if (vdev->vpaths[i].handle) {
1709                                 if (vxge_hw_vpath_recover_from_reset(
1710                                         vdev->vpaths[i].handle)
1711                                                 != VXGE_HW_OK) {
1712                                         vxge_debug_init(VXGE_ERR,
1713                                                 "vxge_hw_vpath_recover_"
1714                                                 "from_reset failed for vpath: "
1715                                                 "%d", i);
1716                                         ret = -EPERM;
1717                                         goto out;
1718                                 }
1719                                 } else {
1720                                         vxge_debug_init(VXGE_ERR,
1721                                         "vxge_hw_vpath_reset failed for "
1722                                                 "vpath:%d", i);
1723                                         ret = -EPERM;
1724                                         goto out;
1725                                 }
1726         }
1727
1728         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1729                 /* Reprogram the DA table with populated mac addresses */
1730                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1731                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1732                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1733                 }
1734
1735                 /* enable vpath interrupts */
1736                 for (i = 0; i < vdev->no_of_vpath; i++)
1737                         vxge_vpath_intr_enable(vdev, i);
1738
1739                 vxge_hw_device_intr_enable(vdev->devh);
1740
1741                 smp_wmb();
1742
1743                 /* Indicate card up */
1744                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1745
1746                 /* Get the traffic to flow through the vpaths */
1747                 for (i = 0; i < vdev->no_of_vpath; i++) {
1748                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1749                         smp_wmb();
1750                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1751                 }
1752
1753                 netif_tx_wake_all_queues(vdev->ndev);
1754         }
1755
1756 out:
1757         vxge_debug_entryexit(VXGE_TRACE,
1758                 "%s:%d  Exiting...", __func__, __LINE__);
1759
1760         /* Indicate reset done */
1761         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1762                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1763         return ret;
1764 }
1765
1766 /*
1767  * vxge_reset
1768  * @vdev: pointer to ll device
1769  *
1770  * driver may reset the chip on events of serr, eccerr, etc
1771  */
1772 static void vxge_reset(struct work_struct *work)
1773 {
1774         struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task);
1775
1776         if (!netif_running(vdev->ndev))
1777                 return;
1778
1779         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1780 }
1781
1782 /**
1783  * vxge_poll - Receive handler when Receive Polling is used.
1784  * @dev: pointer to the device structure.
1785  * @budget: Number of packets budgeted to be processed in this iteration.
1786  *
1787  * This function comes into picture only if Receive side is being handled
1788  * through polling (called NAPI in linux). It mostly does what the normal
1789  * Rx interrupt handler does in terms of descriptor and packet processing
1790  * but not in an interrupt context. Also it will process a specified number
1791  * of packets at most in one iteration. This value is passed down by the
1792  * kernel as the function argument 'budget'.
1793  */
1794 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1795 {
1796         struct vxge_ring *ring =
1797                 container_of(napi, struct vxge_ring, napi);
1798         int budget_org = budget;
1799         ring->budget = budget;
1800
1801         vxge_hw_vpath_poll_rx(ring->handle);
1802
1803         if (ring->pkts_processed < budget_org) {
1804                 napi_complete(napi);
1805                 /* Re enable the Rx interrupts for the vpath */
1806                 vxge_hw_channel_msix_unmask(
1807                                 (struct __vxge_hw_channel *)ring->handle,
1808                                 ring->rx_vector_no);
1809         }
1810
1811         return ring->pkts_processed;
1812 }
1813
1814 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1815 {
1816         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1817         int pkts_processed = 0;
1818         int i;
1819         int budget_org = budget;
1820         struct vxge_ring *ring;
1821
1822         struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1823
1824         for (i = 0; i < vdev->no_of_vpath; i++) {
1825                 ring = &vdev->vpaths[i].ring;
1826                 ring->budget = budget;
1827                 vxge_hw_vpath_poll_rx(ring->handle);
1828                 pkts_processed += ring->pkts_processed;
1829                 budget -= ring->pkts_processed;
1830                 if (budget <= 0)
1831                         break;
1832         }
1833
1834         VXGE_COMPLETE_ALL_TX(vdev);
1835
1836         if (pkts_processed < budget_org) {
1837                 napi_complete(napi);
1838                 /* Re enable the Rx interrupts for the ring */
1839                 vxge_hw_device_unmask_all(hldev);
1840                 vxge_hw_device_flush_io(hldev);
1841         }
1842
1843         return pkts_processed;
1844 }
1845
1846 #ifdef CONFIG_NET_POLL_CONTROLLER
1847 /**
1848  * vxge_netpoll - netpoll event handler entry point
1849  * @dev : pointer to the device structure.
1850  * Description:
1851  *      This function will be called by upper layer to check for events on the
1852  * interface in situations where interrupts are disabled. It is used for
1853  * specific in-kernel networking tasks, such as remote consoles and kernel
1854  * debugging over the network (example netdump in RedHat).
1855  */
1856 static void vxge_netpoll(struct net_device *dev)
1857 {
1858         struct __vxge_hw_device *hldev;
1859         struct vxgedev *vdev;
1860
1861         vdev = netdev_priv(dev);
1862         hldev = pci_get_drvdata(vdev->pdev);
1863
1864         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1865
1866         if (pci_channel_offline(vdev->pdev))
1867                 return;
1868
1869         disable_irq(dev->irq);
1870         vxge_hw_device_clear_tx_rx(hldev);
1871
1872         vxge_hw_device_clear_tx_rx(hldev);
1873         VXGE_COMPLETE_ALL_RX(vdev);
1874         VXGE_COMPLETE_ALL_TX(vdev);
1875
1876         enable_irq(dev->irq);
1877
1878         vxge_debug_entryexit(VXGE_TRACE,
1879                 "%s:%d  Exiting...", __func__, __LINE__);
1880 }
1881 #endif
1882
1883 /* RTH configuration */
1884 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1885 {
1886         enum vxge_hw_status status = VXGE_HW_OK;
1887         struct vxge_hw_rth_hash_types hash_types;
1888         u8 itable[256] = {0}; /* indirection table */
1889         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1890         int index;
1891
1892         /*
1893          * Filling
1894          *      - itable with bucket numbers
1895          *      - mtable with bucket-to-vpath mapping
1896          */
1897         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1898                 itable[index] = index;
1899                 mtable[index] = index % vdev->no_of_vpath;
1900         }
1901
1902         /* set indirection table, bucket-to-vpath mapping */
1903         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1904                                                 vdev->no_of_vpath,
1905                                                 mtable, itable,
1906                                                 vdev->config.rth_bkt_sz);
1907         if (status != VXGE_HW_OK) {
1908                 vxge_debug_init(VXGE_ERR,
1909                         "RTH indirection table configuration failed "
1910                         "for vpath:%d", vdev->vpaths[0].device_id);
1911                 return status;
1912         }
1913
1914         /* Fill RTH hash types */
1915         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1916         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1917         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1918         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1919         hash_types.hash_type_tcpipv6ex_en =
1920                                         vdev->config.rth_hash_type_tcpipv6ex;
1921         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1922
1923         /*
1924          * Because the itable_set() method uses the active_table field
1925          * for the target virtual path the RTH config should be updated
1926          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1927          * when steering frames.
1928          */
1929          for (index = 0; index < vdev->no_of_vpath; index++) {
1930                 status = vxge_hw_vpath_rts_rth_set(
1931                                 vdev->vpaths[index].handle,
1932                                 vdev->config.rth_algorithm,
1933                                 &hash_types,
1934                                 vdev->config.rth_bkt_sz);
1935                  if (status != VXGE_HW_OK) {
1936                         vxge_debug_init(VXGE_ERR,
1937                                 "RTH configuration failed for vpath:%d",
1938                                 vdev->vpaths[index].device_id);
1939                         return status;
1940                  }
1941          }
1942
1943         return status;
1944 }
1945
1946 /* reset vpaths */
1947 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1948 {
1949         enum vxge_hw_status status = VXGE_HW_OK;
1950         struct vxge_vpath *vpath;
1951         int i;
1952
1953         for (i = 0; i < vdev->no_of_vpath; i++) {
1954                 vpath = &vdev->vpaths[i];
1955                 if (vpath->handle) {
1956                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1957                                 if (is_vxge_card_up(vdev) &&
1958                                         vxge_hw_vpath_recover_from_reset(
1959                                                 vpath->handle) != VXGE_HW_OK) {
1960                                         vxge_debug_init(VXGE_ERR,
1961                                                 "vxge_hw_vpath_recover_"
1962                                                 "from_reset failed for vpath: "
1963                                                 "%d", i);
1964                                         return status;
1965                                 }
1966                         } else {
1967                                 vxge_debug_init(VXGE_ERR,
1968                                         "vxge_hw_vpath_reset failed for "
1969                                         "vpath:%d", i);
1970                                         return status;
1971                         }
1972                 }
1973         }
1974
1975         return status;
1976 }
1977
1978 /* close vpaths */
1979 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
1980 {
1981         struct vxge_vpath *vpath;
1982         int i;
1983
1984         for (i = index; i < vdev->no_of_vpath; i++) {
1985                 vpath = &vdev->vpaths[i];
1986
1987                 if (vpath->handle && vpath->is_open) {
1988                         vxge_hw_vpath_close(vpath->handle);
1989                         vdev->stats.vpaths_open--;
1990                 }
1991                 vpath->is_open = 0;
1992                 vpath->handle = NULL;
1993         }
1994 }
1995
1996 /* open vpaths */
1997 static int vxge_open_vpaths(struct vxgedev *vdev)
1998 {
1999         struct vxge_hw_vpath_attr attr;
2000         enum vxge_hw_status status;
2001         struct vxge_vpath *vpath;
2002         u32 vp_id = 0;
2003         int i;
2004
2005         for (i = 0; i < vdev->no_of_vpath; i++) {
2006                 vpath = &vdev->vpaths[i];
2007                 vxge_assert(vpath->is_configured);
2008
2009                 if (!vdev->titan1) {
2010                         struct vxge_hw_vp_config *vcfg;
2011                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2012
2013                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2014                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2015                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2016                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2017                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2018                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2019                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2020                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2021                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2022                 }
2023
2024                 attr.vp_id = vpath->device_id;
2025                 attr.fifo_attr.callback = vxge_xmit_compl;
2026                 attr.fifo_attr.txdl_term = vxge_tx_term;
2027                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2028                 attr.fifo_attr.userdata = &vpath->fifo;
2029
2030                 attr.ring_attr.callback = vxge_rx_1b_compl;
2031                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2032                 attr.ring_attr.rxd_term = vxge_rx_term;
2033                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2034                 attr.ring_attr.userdata = &vpath->ring;
2035
2036                 vpath->ring.ndev = vdev->ndev;
2037                 vpath->ring.pdev = vdev->pdev;
2038
2039                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2040                 if (status == VXGE_HW_OK) {
2041                         vpath->fifo.handle =
2042                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2043                         vpath->ring.handle =
2044                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2045                         vpath->fifo.tx_steering_type =
2046                                 vdev->config.tx_steering_type;
2047                         vpath->fifo.ndev = vdev->ndev;
2048                         vpath->fifo.pdev = vdev->pdev;
2049                         if (vdev->config.tx_steering_type)
2050                                 vpath->fifo.txq =
2051                                         netdev_get_tx_queue(vdev->ndev, i);
2052                         else
2053                                 vpath->fifo.txq =
2054                                         netdev_get_tx_queue(vdev->ndev, 0);
2055                         vpath->fifo.indicate_max_pkts =
2056                                 vdev->config.fifo_indicate_max_pkts;
2057                         vpath->ring.rx_vector_no = 0;
2058                         vpath->ring.rx_csum = vdev->rx_csum;
2059                         vpath->ring.rx_hwts = vdev->rx_hwts;
2060                         vpath->is_open = 1;
2061                         vdev->vp_handles[i] = vpath->handle;
2062                         vpath->ring.gro_enable = vdev->config.gro_enable;
2063                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2064                         vdev->stats.vpaths_open++;
2065                 } else {
2066                         vdev->stats.vpath_open_fail++;
2067                         vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2068                                         "open with status: %d",
2069                                         vdev->ndev->name, vpath->device_id,
2070                                         status);
2071                         vxge_close_vpaths(vdev, 0);
2072                         return -EPERM;
2073                 }
2074
2075                 vp_id = vpath->handle->vpath->vp_id;
2076                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2077         }
2078
2079         return VXGE_HW_OK;
2080 }
2081
2082 /*
2083  *  vxge_isr_napi
2084  *  @irq: the irq of the device.
2085  *  @dev_id: a void pointer to the hldev structure of the Titan device
2086  *  @ptregs: pointer to the registers pushed on the stack.
2087  *
2088  *  This function is the ISR handler of the device when napi is enabled. It
2089  *  identifies the reason for the interrupt and calls the relevant service
2090  *  routines.
2091  */
2092 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2093 {
2094         struct net_device *dev;
2095         struct __vxge_hw_device *hldev;
2096         u64 reason;
2097         enum vxge_hw_status status;
2098         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2099
2100         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2101
2102         dev = vdev->ndev;
2103         hldev = pci_get_drvdata(vdev->pdev);
2104
2105         if (pci_channel_offline(vdev->pdev))
2106                 return IRQ_NONE;
2107
2108         if (unlikely(!is_vxge_card_up(vdev)))
2109                 return IRQ_HANDLED;
2110
2111         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2112         if (status == VXGE_HW_OK) {
2113                 vxge_hw_device_mask_all(hldev);
2114
2115                 if (reason &
2116                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2117                         vdev->vpaths_deployed >>
2118                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2119
2120                         vxge_hw_device_clear_tx_rx(hldev);
2121                         napi_schedule(&vdev->napi);
2122                         vxge_debug_intr(VXGE_TRACE,
2123                                 "%s:%d  Exiting...", __func__, __LINE__);
2124                         return IRQ_HANDLED;
2125                 } else
2126                         vxge_hw_device_unmask_all(hldev);
2127         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2128                 (status == VXGE_HW_ERR_CRITICAL) ||
2129                 (status == VXGE_HW_ERR_FIFO))) {
2130                 vxge_hw_device_mask_all(hldev);
2131                 vxge_hw_device_flush_io(hldev);
2132                 return IRQ_HANDLED;
2133         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2134                 return IRQ_HANDLED;
2135
2136         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2137         return IRQ_NONE;
2138 }
2139
2140 #ifdef CONFIG_PCI_MSI
2141
2142 static irqreturn_t
2143 vxge_tx_msix_handle(int irq, void *dev_id)
2144 {
2145         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2146
2147         VXGE_COMPLETE_VPATH_TX(fifo);
2148
2149         return IRQ_HANDLED;
2150 }
2151
2152 static irqreturn_t
2153 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2154 {
2155         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2156
2157         /* MSIX_IDX for Rx is 1 */
2158         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2159                                         ring->rx_vector_no);
2160
2161         napi_schedule(&ring->napi);
2162         return IRQ_HANDLED;
2163 }
2164
2165 static irqreturn_t
2166 vxge_alarm_msix_handle(int irq, void *dev_id)
2167 {
2168         int i;
2169         enum vxge_hw_status status;
2170         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2171         struct vxgedev *vdev = vpath->vdev;
2172         int msix_id = (vpath->handle->vpath->vp_id *
2173                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2174
2175         for (i = 0; i < vdev->no_of_vpath; i++) {
2176                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2177
2178                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2179                         vdev->exec_mode);
2180                 if (status == VXGE_HW_OK) {
2181
2182                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2183                                         msix_id);
2184                         continue;
2185                 }
2186                 vxge_debug_intr(VXGE_ERR,
2187                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2188                         VXGE_DRIVER_NAME, status);
2189         }
2190         return IRQ_HANDLED;
2191 }
2192
2193 static int vxge_alloc_msix(struct vxgedev *vdev)
2194 {
2195         int j, i, ret = 0;
2196         int msix_intr_vect = 0, temp;
2197         vdev->intr_cnt = 0;
2198
2199 start:
2200         /* Tx/Rx MSIX Vectors count */
2201         vdev->intr_cnt = vdev->no_of_vpath * 2;
2202
2203         /* Alarm MSIX Vectors count */
2204         vdev->intr_cnt++;
2205
2206         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2207                                 GFP_KERNEL);
2208         if (!vdev->entries) {
2209                 vxge_debug_init(VXGE_ERR,
2210                         "%s: memory allocation failed",
2211                         VXGE_DRIVER_NAME);
2212                 ret = -ENOMEM;
2213                 goto alloc_entries_failed;
2214         }
2215
2216         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2217                                      sizeof(struct vxge_msix_entry),
2218                                      GFP_KERNEL);
2219         if (!vdev->vxge_entries) {
2220                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2221                         VXGE_DRIVER_NAME);
2222                 ret = -ENOMEM;
2223                 goto alloc_vxge_entries_failed;
2224         }
2225
2226         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2227
2228                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2229
2230                 /* Initialize the fifo vector */
2231                 vdev->entries[j].entry = msix_intr_vect;
2232                 vdev->vxge_entries[j].entry = msix_intr_vect;
2233                 vdev->vxge_entries[j].in_use = 0;
2234                 j++;
2235
2236                 /* Initialize the ring vector */
2237                 vdev->entries[j].entry = msix_intr_vect + 1;
2238                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2239                 vdev->vxge_entries[j].in_use = 0;
2240                 j++;
2241         }
2242
2243         /* Initialize the alarm vector */
2244         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2245         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2246         vdev->vxge_entries[j].in_use = 0;
2247
2248         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2249         if (ret > 0) {
2250                 vxge_debug_init(VXGE_ERR,
2251                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2252                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2253                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2254                         ret = -ENODEV;
2255                         goto enable_msix_failed;
2256                 }
2257
2258                 kfree(vdev->entries);
2259                 kfree(vdev->vxge_entries);
2260                 vdev->entries = NULL;
2261                 vdev->vxge_entries = NULL;
2262                 /* Try with less no of vector by reducing no of vpaths count */
2263                 temp = (ret - 1)/2;
2264                 vxge_close_vpaths(vdev, temp);
2265                 vdev->no_of_vpath = temp;
2266                 goto start;
2267         } else if (ret < 0) {
2268                 ret = -ENODEV;
2269                 goto enable_msix_failed;
2270         }
2271         return 0;
2272
2273 enable_msix_failed:
2274         kfree(vdev->vxge_entries);
2275 alloc_vxge_entries_failed:
2276         kfree(vdev->entries);
2277 alloc_entries_failed:
2278         return ret;
2279 }
2280
2281 static int vxge_enable_msix(struct vxgedev *vdev)
2282 {
2283
2284         int i, ret = 0;
2285         /* 0 - Tx, 1 - Rx  */
2286         int tim_msix_id[4] = {0, 1, 0, 0};
2287
2288         vdev->intr_cnt = 0;
2289
2290         /* allocate msix vectors */
2291         ret = vxge_alloc_msix(vdev);
2292         if (!ret) {
2293                 for (i = 0; i < vdev->no_of_vpath; i++) {
2294                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2295
2296                         /* If fifo or ring are not enabled, the MSIX vector for
2297                          * it should be set to 0.
2298                          */
2299                         vpath->ring.rx_vector_no = (vpath->device_id *
2300                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2301
2302                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2303                                                VXGE_ALARM_MSIX_ID);
2304                 }
2305         }
2306
2307         return ret;
2308 }
2309
2310 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2311 {
2312         int intr_cnt;
2313
2314         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2315                 intr_cnt++) {
2316                 if (vdev->vxge_entries[intr_cnt].in_use) {
2317                         synchronize_irq(vdev->entries[intr_cnt].vector);
2318                         free_irq(vdev->entries[intr_cnt].vector,
2319                                 vdev->vxge_entries[intr_cnt].arg);
2320                         vdev->vxge_entries[intr_cnt].in_use = 0;
2321                 }
2322         }
2323
2324         kfree(vdev->entries);
2325         kfree(vdev->vxge_entries);
2326         vdev->entries = NULL;
2327         vdev->vxge_entries = NULL;
2328
2329         if (vdev->config.intr_type == MSI_X)
2330                 pci_disable_msix(vdev->pdev);
2331 }
2332 #endif
2333
2334 static void vxge_rem_isr(struct vxgedev *vdev)
2335 {
2336         struct __vxge_hw_device *hldev;
2337         hldev = pci_get_drvdata(vdev->pdev);
2338
2339 #ifdef CONFIG_PCI_MSI
2340         if (vdev->config.intr_type == MSI_X) {
2341                 vxge_rem_msix_isr(vdev);
2342         } else
2343 #endif
2344         if (vdev->config.intr_type == INTA) {
2345                         synchronize_irq(vdev->pdev->irq);
2346                         free_irq(vdev->pdev->irq, vdev);
2347         }
2348 }
2349
2350 static int vxge_add_isr(struct vxgedev *vdev)
2351 {
2352         int ret = 0;
2353 #ifdef CONFIG_PCI_MSI
2354         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2355         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2356
2357         if (vdev->config.intr_type == MSI_X)
2358                 ret = vxge_enable_msix(vdev);
2359
2360         if (ret) {
2361                 vxge_debug_init(VXGE_ERR,
2362                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2363                 vxge_debug_init(VXGE_ERR,
2364                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2365                 vdev->config.intr_type = INTA;
2366         }
2367
2368         if (vdev->config.intr_type == MSI_X) {
2369                 for (intr_idx = 0;
2370                      intr_idx < (vdev->no_of_vpath *
2371                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2372
2373                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2374                         irq_req = 0;
2375
2376                         switch (msix_idx) {
2377                         case 0:
2378                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2379                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2380                                         vdev->ndev->name,
2381                                         vdev->entries[intr_cnt].entry,
2382                                         pci_fun, vp_idx);
2383                                 ret = request_irq(
2384                                     vdev->entries[intr_cnt].vector,
2385                                         vxge_tx_msix_handle, 0,
2386                                         vdev->desc[intr_cnt],
2387                                         &vdev->vpaths[vp_idx].fifo);
2388                                         vdev->vxge_entries[intr_cnt].arg =
2389                                                 &vdev->vpaths[vp_idx].fifo;
2390                                 irq_req = 1;
2391                                 break;
2392                         case 1:
2393                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2394                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2395                                         vdev->ndev->name,
2396                                         vdev->entries[intr_cnt].entry,
2397                                         pci_fun, vp_idx);
2398                                 ret = request_irq(
2399                                     vdev->entries[intr_cnt].vector,
2400                                         vxge_rx_msix_napi_handle,
2401                                         0,
2402                                         vdev->desc[intr_cnt],
2403                                         &vdev->vpaths[vp_idx].ring);
2404                                         vdev->vxge_entries[intr_cnt].arg =
2405                                                 &vdev->vpaths[vp_idx].ring;
2406                                 irq_req = 1;
2407                                 break;
2408                         }
2409
2410                         if (ret) {
2411                                 vxge_debug_init(VXGE_ERR,
2412                                         "%s: MSIX - %d  Registration failed",
2413                                         vdev->ndev->name, intr_cnt);
2414                                 vxge_rem_msix_isr(vdev);
2415                                 vdev->config.intr_type = INTA;
2416                                 vxge_debug_init(VXGE_ERR,
2417                                         "%s: Defaulting to INTA"
2418                                         , vdev->ndev->name);
2419                                         goto INTA_MODE;
2420                         }
2421
2422                         if (irq_req) {
2423                                 /* We requested for this msix interrupt */
2424                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2425                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2426                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2427                                 vxge_hw_vpath_msix_unmask(
2428                                         vdev->vpaths[vp_idx].handle,
2429                                         msix_idx);
2430                                 intr_cnt++;
2431                         }
2432
2433                         /* Point to next vpath handler */
2434                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2435                             (vp_idx < (vdev->no_of_vpath - 1)))
2436                                 vp_idx++;
2437                 }
2438
2439                 intr_cnt = vdev->no_of_vpath * 2;
2440                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2441                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2442                         vdev->ndev->name,
2443                         vdev->entries[intr_cnt].entry,
2444                         pci_fun);
2445                 /* For Alarm interrupts */
2446                 ret = request_irq(vdev->entries[intr_cnt].vector,
2447                                         vxge_alarm_msix_handle, 0,
2448                                         vdev->desc[intr_cnt],
2449                                         &vdev->vpaths[0]);
2450                 if (ret) {
2451                         vxge_debug_init(VXGE_ERR,
2452                                 "%s: MSIX - %d Registration failed",
2453                                 vdev->ndev->name, intr_cnt);
2454                         vxge_rem_msix_isr(vdev);
2455                         vdev->config.intr_type = INTA;
2456                         vxge_debug_init(VXGE_ERR,
2457                                 "%s: Defaulting to INTA",
2458                                 vdev->ndev->name);
2459                                 goto INTA_MODE;
2460                 }
2461
2462                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2463                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2464                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2465                                         msix_idx);
2466                 vdev->vxge_entries[intr_cnt].in_use = 1;
2467                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2468         }
2469 INTA_MODE:
2470 #endif
2471
2472         if (vdev->config.intr_type == INTA) {
2473                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2474                         "%s:vxge:INTA", vdev->ndev->name);
2475                 vxge_hw_device_set_intr_type(vdev->devh,
2476                         VXGE_HW_INTR_MODE_IRQLINE);
2477                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2478                         vdev->vpaths[0].device_id);
2479                 ret = request_irq((int) vdev->pdev->irq,
2480                         vxge_isr_napi,
2481                         IRQF_SHARED, vdev->desc[0], vdev);
2482                 if (ret) {
2483                         vxge_debug_init(VXGE_ERR,
2484                                 "%s %s-%d: ISR registration failed",
2485                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2486                         return -ENODEV;
2487                 }
2488                 vxge_debug_init(VXGE_TRACE,
2489                         "new %s-%d line allocated",
2490                         "IRQ", vdev->pdev->irq);
2491         }
2492
2493         return VXGE_HW_OK;
2494 }
2495
2496 static void vxge_poll_vp_reset(unsigned long data)
2497 {
2498         struct vxgedev *vdev = (struct vxgedev *)data;
2499         int i, j = 0;
2500
2501         for (i = 0; i < vdev->no_of_vpath; i++) {
2502                 if (test_bit(i, &vdev->vp_reset)) {
2503                         vxge_reset_vpath(vdev, i);
2504                         j++;
2505                 }
2506         }
2507         if (j && (vdev->config.intr_type != MSI_X)) {
2508                 vxge_hw_device_unmask_all(vdev->devh);
2509                 vxge_hw_device_flush_io(vdev->devh);
2510         }
2511
2512         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2513 }
2514
2515 static void vxge_poll_vp_lockup(unsigned long data)
2516 {
2517         struct vxgedev *vdev = (struct vxgedev *)data;
2518         enum vxge_hw_status status = VXGE_HW_OK;
2519         struct vxge_vpath *vpath;
2520         struct vxge_ring *ring;
2521         int i;
2522
2523         for (i = 0; i < vdev->no_of_vpath; i++) {
2524                 ring = &vdev->vpaths[i].ring;
2525                 /* Did this vpath received any packets */
2526                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2527                         status = vxge_hw_vpath_check_leak(ring->handle);
2528
2529                         /* Did it received any packets last time */
2530                         if ((VXGE_HW_FAIL == status) &&
2531                                 (VXGE_HW_FAIL == ring->last_status)) {
2532
2533                                 /* schedule vpath reset */
2534                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2535                                         vpath = &vdev->vpaths[i];
2536
2537                                         /* disable interrupts for this vpath */
2538                                         vxge_vpath_intr_disable(vdev, i);
2539
2540                                         /* stop the queue for this vpath */
2541                                         netif_tx_stop_queue(vpath->fifo.txq);
2542                                         continue;
2543                                 }
2544                         }
2545                 }
2546                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2547                 ring->last_status = status;
2548         }
2549
2550         /* Check every 1 milli second */
2551         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2552 }
2553
2554 /**
2555  * vxge_open
2556  * @dev: pointer to the device structure.
2557  *
2558  * This function is the open entry point of the driver. It mainly calls a
2559  * function to allocate Rx buffers and inserts them into the buffer
2560  * descriptors and then enables the Rx part of the NIC.
2561  * Return value: '0' on success and an appropriate (-)ve integer as
2562  * defined in errno.h file on failure.
2563  */
2564 static int vxge_open(struct net_device *dev)
2565 {
2566         enum vxge_hw_status status;
2567         struct vxgedev *vdev;
2568         struct __vxge_hw_device *hldev;
2569         struct vxge_vpath *vpath;
2570         int ret = 0;
2571         int i;
2572         u64 val64, function_mode;
2573
2574         vxge_debug_entryexit(VXGE_TRACE,
2575                 "%s: %s:%d", dev->name, __func__, __LINE__);
2576
2577         vdev = netdev_priv(dev);
2578         hldev = pci_get_drvdata(vdev->pdev);
2579         function_mode = vdev->config.device_hw_info.function_mode;
2580
2581         /* make sure you have link off by default every time Nic is
2582          * initialized */
2583         netif_carrier_off(dev);
2584
2585         /* Open VPATHs */
2586         status = vxge_open_vpaths(vdev);
2587         if (status != VXGE_HW_OK) {
2588                 vxge_debug_init(VXGE_ERR,
2589                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2590                 ret = -EPERM;
2591                 goto out0;
2592         }
2593
2594         vdev->mtu = dev->mtu;
2595
2596         status = vxge_add_isr(vdev);
2597         if (status != VXGE_HW_OK) {
2598                 vxge_debug_init(VXGE_ERR,
2599                         "%s: fatal: ISR add failed", dev->name);
2600                 ret = -EPERM;
2601                 goto out1;
2602         }
2603
2604         if (vdev->config.intr_type != MSI_X) {
2605                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2606                         vdev->config.napi_weight);
2607                 napi_enable(&vdev->napi);
2608                 for (i = 0; i < vdev->no_of_vpath; i++) {
2609                         vpath = &vdev->vpaths[i];
2610                         vpath->ring.napi_p = &vdev->napi;
2611                 }
2612         } else {
2613                 for (i = 0; i < vdev->no_of_vpath; i++) {
2614                         vpath = &vdev->vpaths[i];
2615                         netif_napi_add(dev, &vpath->ring.napi,
2616                             vxge_poll_msix, vdev->config.napi_weight);
2617                         napi_enable(&vpath->ring.napi);
2618                         vpath->ring.napi_p = &vpath->ring.napi;
2619                 }
2620         }
2621
2622         /* configure RTH */
2623         if (vdev->config.rth_steering) {
2624                 status = vxge_rth_configure(vdev);
2625                 if (status != VXGE_HW_OK) {
2626                         vxge_debug_init(VXGE_ERR,
2627                                 "%s: fatal: RTH configuration failed",
2628                                 dev->name);
2629                         ret = -EPERM;
2630                         goto out2;
2631                 }
2632         }
2633         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2634                hldev->config.rth_en ? "enabled" : "disabled");
2635
2636         for (i = 0; i < vdev->no_of_vpath; i++) {
2637                 vpath = &vdev->vpaths[i];
2638
2639                 /* set initial mtu before enabling the device */
2640                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2641                 if (status != VXGE_HW_OK) {
2642                         vxge_debug_init(VXGE_ERR,
2643                                 "%s: fatal: can not set new MTU", dev->name);
2644                         ret = -EPERM;
2645                         goto out2;
2646                 }
2647         }
2648
2649         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2650         vxge_debug_init(vdev->level_trace,
2651                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2652         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2653
2654         /* Restore the DA, VID table and also multicast and promiscuous mode
2655          * states
2656          */
2657         if (vdev->all_multi_flg) {
2658                 for (i = 0; i < vdev->no_of_vpath; i++) {
2659                         vpath = &vdev->vpaths[i];
2660                         vxge_restore_vpath_mac_addr(vpath);
2661                         vxge_restore_vpath_vid_table(vpath);
2662
2663                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2664                         if (status != VXGE_HW_OK)
2665                                 vxge_debug_init(VXGE_ERR,
2666                                         "%s:%d Enabling multicast failed",
2667                                         __func__, __LINE__);
2668                 }
2669         }
2670
2671         /* Enable vpath to sniff all unicast/multicast traffic that not
2672          * addressed to them. We allow promiscous mode for PF only
2673          */
2674
2675         val64 = 0;
2676         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2677                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2678
2679         vxge_hw_mgmt_reg_write(vdev->devh,
2680                 vxge_hw_mgmt_reg_type_mrpcim,
2681                 0,
2682                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2683                         rxmac_authorize_all_addr),
2684                 val64);
2685
2686         vxge_hw_mgmt_reg_write(vdev->devh,
2687                 vxge_hw_mgmt_reg_type_mrpcim,
2688                 0,
2689                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2690                         rxmac_authorize_all_vid),
2691                 val64);
2692
2693         vxge_set_multicast(dev);
2694
2695         /* Enabling Bcast and mcast for all vpath */
2696         for (i = 0; i < vdev->no_of_vpath; i++) {
2697                 vpath = &vdev->vpaths[i];
2698                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2699                 if (status != VXGE_HW_OK)
2700                         vxge_debug_init(VXGE_ERR,
2701                                 "%s : Can not enable bcast for vpath "
2702                                 "id %d", dev->name, i);
2703                 if (vdev->config.addr_learn_en) {
2704                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2705                         if (status != VXGE_HW_OK)
2706                                 vxge_debug_init(VXGE_ERR,
2707                                         "%s : Can not enable mcast for vpath "
2708                                         "id %d", dev->name, i);
2709                 }
2710         }
2711
2712         vxge_hw_device_setpause_data(vdev->devh, 0,
2713                 vdev->config.tx_pause_enable,
2714                 vdev->config.rx_pause_enable);
2715
2716         if (vdev->vp_reset_timer.function == NULL)
2717                 vxge_os_timer(vdev->vp_reset_timer,
2718                         vxge_poll_vp_reset, vdev, (HZ/2));
2719
2720         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2721         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2722                 vxge_os_timer(vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev,
2723                               HZ / 2);
2724
2725         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2726
2727         smp_wmb();
2728
2729         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2730                 netif_carrier_on(vdev->ndev);
2731                 netdev_notice(vdev->ndev, "Link Up\n");
2732                 vdev->stats.link_up++;
2733         }
2734
2735         vxge_hw_device_intr_enable(vdev->devh);
2736
2737         smp_wmb();
2738
2739         for (i = 0; i < vdev->no_of_vpath; i++) {
2740                 vpath = &vdev->vpaths[i];
2741
2742                 vxge_hw_vpath_enable(vpath->handle);
2743                 smp_wmb();
2744                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2745         }
2746
2747         netif_tx_start_all_queues(vdev->ndev);
2748         goto out0;
2749
2750 out2:
2751         vxge_rem_isr(vdev);
2752
2753         /* Disable napi */
2754         if (vdev->config.intr_type != MSI_X)
2755                 napi_disable(&vdev->napi);
2756         else {
2757                 for (i = 0; i < vdev->no_of_vpath; i++)
2758                         napi_disable(&vdev->vpaths[i].ring.napi);
2759         }
2760
2761 out1:
2762         vxge_close_vpaths(vdev, 0);
2763 out0:
2764         vxge_debug_entryexit(VXGE_TRACE,
2765                                 "%s: %s:%d  Exiting...",
2766                                 dev->name, __func__, __LINE__);
2767         return ret;
2768 }
2769
2770 /* Loop throught the mac address list and delete all the entries */
2771 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2772 {
2773
2774         struct list_head *entry, *next;
2775         if (list_empty(&vpath->mac_addr_list))
2776                 return;
2777
2778         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2779                 list_del(entry);
2780                 kfree((struct vxge_mac_addrs *)entry);
2781         }
2782 }
2783
2784 static void vxge_napi_del_all(struct vxgedev *vdev)
2785 {
2786         int i;
2787         if (vdev->config.intr_type != MSI_X)
2788                 netif_napi_del(&vdev->napi);
2789         else {
2790                 for (i = 0; i < vdev->no_of_vpath; i++)
2791                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2792         }
2793 }
2794
2795 static int do_vxge_close(struct net_device *dev, int do_io)
2796 {
2797         enum vxge_hw_status status;
2798         struct vxgedev *vdev;
2799         struct __vxge_hw_device *hldev;
2800         int i;
2801         u64 val64, vpath_vector;
2802         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2803                 dev->name, __func__, __LINE__);
2804
2805         vdev = netdev_priv(dev);
2806         hldev = pci_get_drvdata(vdev->pdev);
2807
2808         if (unlikely(!is_vxge_card_up(vdev)))
2809                 return 0;
2810
2811         /* If vxge_handle_crit_err task is executing,
2812          * wait till it completes. */
2813         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2814                 msleep(50);
2815
2816         if (do_io) {
2817                 /* Put the vpath back in normal mode */
2818                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2819                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2820                                 vxge_hw_mgmt_reg_type_mrpcim,
2821                                 0,
2822                                 (ulong)offsetof(
2823                                         struct vxge_hw_mrpcim_reg,
2824                                         rts_mgr_cbasin_cfg),
2825                                 &val64);
2826                 if (status == VXGE_HW_OK) {
2827                         val64 &= ~vpath_vector;
2828                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2829                                         vxge_hw_mgmt_reg_type_mrpcim,
2830                                         0,
2831                                         (ulong)offsetof(
2832                                                 struct vxge_hw_mrpcim_reg,
2833                                                 rts_mgr_cbasin_cfg),
2834                                         val64);
2835                 }
2836
2837                 /* Remove the function 0 from promiscous mode */
2838                 vxge_hw_mgmt_reg_write(vdev->devh,
2839                         vxge_hw_mgmt_reg_type_mrpcim,
2840                         0,
2841                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2842                                 rxmac_authorize_all_addr),
2843                         0);
2844
2845                 vxge_hw_mgmt_reg_write(vdev->devh,
2846                         vxge_hw_mgmt_reg_type_mrpcim,
2847                         0,
2848                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2849                                 rxmac_authorize_all_vid),
2850                         0);
2851
2852                 smp_wmb();
2853         }
2854
2855         if (vdev->titan1)
2856                 del_timer_sync(&vdev->vp_lockup_timer);
2857
2858         del_timer_sync(&vdev->vp_reset_timer);
2859
2860         if (do_io)
2861                 vxge_hw_device_wait_receive_idle(hldev);
2862
2863         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2864
2865         /* Disable napi */
2866         if (vdev->config.intr_type != MSI_X)
2867                 napi_disable(&vdev->napi);
2868         else {
2869                 for (i = 0; i < vdev->no_of_vpath; i++)
2870                         napi_disable(&vdev->vpaths[i].ring.napi);
2871         }
2872
2873         netif_carrier_off(vdev->ndev);
2874         netdev_notice(vdev->ndev, "Link Down\n");
2875         netif_tx_stop_all_queues(vdev->ndev);
2876
2877         /* Note that at this point xmit() is stopped by upper layer */
2878         if (do_io)
2879                 vxge_hw_device_intr_disable(vdev->devh);
2880
2881         vxge_rem_isr(vdev);
2882
2883         vxge_napi_del_all(vdev);
2884
2885         if (do_io)
2886                 vxge_reset_all_vpaths(vdev);
2887
2888         vxge_close_vpaths(vdev, 0);
2889
2890         vxge_debug_entryexit(VXGE_TRACE,
2891                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2892
2893         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2894
2895         return 0;
2896 }
2897
2898 /**
2899  * vxge_close
2900  * @dev: device pointer.
2901  *
2902  * This is the stop entry point of the driver. It needs to undo exactly
2903  * whatever was done by the open entry point, thus it's usually referred to
2904  * as the close function.Among other things this function mainly stops the
2905  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2906  * Return value: '0' on success and an appropriate (-)ve integer as
2907  * defined in errno.h file on failure.
2908  */
2909 static int vxge_close(struct net_device *dev)
2910 {
2911         do_vxge_close(dev, 1);
2912         return 0;
2913 }
2914
2915 /**
2916  * vxge_change_mtu
2917  * @dev: net device pointer.
2918  * @new_mtu :the new MTU size for the device.
2919  *
2920  * A driver entry point to change MTU size for the device. Before changing
2921  * the MTU the device must be stopped.
2922  */
2923 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2924 {
2925         struct vxgedev *vdev = netdev_priv(dev);
2926
2927         vxge_debug_entryexit(vdev->level_trace,
2928                 "%s:%d", __func__, __LINE__);
2929         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2930                 vxge_debug_init(vdev->level_err,
2931                         "%s: mtu size is invalid", dev->name);
2932                 return -EPERM;
2933         }
2934
2935         /* check if device is down already */
2936         if (unlikely(!is_vxge_card_up(vdev))) {
2937                 /* just store new value, will use later on open() */
2938                 dev->mtu = new_mtu;
2939                 vxge_debug_init(vdev->level_err,
2940                         "%s", "device is down on MTU change");
2941                 return 0;
2942         }
2943
2944         vxge_debug_init(vdev->level_trace,
2945                 "trying to apply new MTU %d", new_mtu);
2946
2947         if (vxge_close(dev))
2948                 return -EIO;
2949
2950         dev->mtu = new_mtu;
2951         vdev->mtu = new_mtu;
2952
2953         if (vxge_open(dev))
2954                 return -EIO;
2955
2956         vxge_debug_init(vdev->level_trace,
2957                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2958
2959         vxge_debug_entryexit(vdev->level_trace,
2960                 "%s:%d  Exiting...", __func__, __LINE__);
2961
2962         return 0;
2963 }
2964
2965 /**
2966  * vxge_get_stats64
2967  * @dev: pointer to the device structure
2968  * @stats: pointer to struct rtnl_link_stats64
2969  *
2970  */
2971 static struct rtnl_link_stats64 *
2972 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
2973 {
2974         struct vxgedev *vdev = netdev_priv(dev);
2975         int k;
2976
2977         /* net_stats already zeroed by caller */
2978         for (k = 0; k < vdev->no_of_vpath; k++) {
2979                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
2980                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
2981                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
2982                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
2983                 net_stats->rx_dropped += vdev->vpaths[k].ring.stats.rx_dropped;
2984                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
2985                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
2986                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
2987         }
2988
2989         return net_stats;
2990 }
2991
2992 static enum vxge_hw_status vxge_timestamp_config(struct vxgedev *vdev,
2993                                                  int enable)
2994 {
2995         enum vxge_hw_status status;
2996         u64 val64;
2997
2998         /* Timestamp is passed to the driver via the FCS, therefore we
2999          * must disable the FCS stripping by the adapter.  Since this is
3000          * required for the driver to load (due to a hardware bug),
3001          * there is no need to do anything special here.
3002          */
3003         if (enable)
3004                 val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3005                         VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3006                         VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3007         else
3008                 val64 = 0;
3009
3010         status = vxge_hw_mgmt_reg_write(vdev->devh,
3011                                         vxge_hw_mgmt_reg_type_mrpcim,
3012                                         0,
3013                                         offsetof(struct vxge_hw_mrpcim_reg,
3014                                                  xmac_timestamp),
3015                                         val64);
3016         vxge_hw_device_flush_io(vdev->devh);
3017         return status;
3018 }
3019
3020 static int vxge_hwtstamp_ioctl(struct vxgedev *vdev, void __user *data)
3021 {
3022         struct hwtstamp_config config;
3023         enum vxge_hw_status status;
3024         int i;
3025
3026         if (copy_from_user(&config, data, sizeof(config)))
3027                 return -EFAULT;
3028
3029         /* reserved for future extensions */
3030         if (config.flags)
3031                 return -EINVAL;
3032
3033         /* Transmit HW Timestamp not supported */
3034         switch (config.tx_type) {
3035         case HWTSTAMP_TX_OFF:
3036                 break;
3037         case HWTSTAMP_TX_ON:
3038         default:
3039                 return -ERANGE;
3040         }
3041
3042         switch (config.rx_filter) {
3043         case HWTSTAMP_FILTER_NONE:
3044                 status = vxge_timestamp_config(vdev, 0);
3045                 if (status != VXGE_HW_OK)
3046                         return -EFAULT;
3047
3048                 vdev->rx_hwts = 0;
3049                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3050                 break;
3051
3052         case HWTSTAMP_FILTER_ALL:
3053         case HWTSTAMP_FILTER_SOME:
3054         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3055         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3056         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3057         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3058         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3059         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3060         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3061         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3062         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3063         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3064         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3065         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3066                 status = vxge_timestamp_config(vdev, 1);
3067                 if (status != VXGE_HW_OK)
3068                         return -EFAULT;
3069
3070                 vdev->rx_hwts = 1;
3071                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3072                 break;
3073
3074         default:
3075                  return -ERANGE;
3076         }
3077
3078         for (i = 0; i < vdev->no_of_vpath; i++)
3079                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3080
3081         if (copy_to_user(data, &config, sizeof(config)))
3082                 return -EFAULT;
3083
3084         return 0;
3085 }
3086
3087 /**
3088  * vxge_ioctl
3089  * @dev: Device pointer.
3090  * @ifr: An IOCTL specific structure, that can contain a pointer to
3091  *       a proprietary structure used to pass information to the driver.
3092  * @cmd: This is used to distinguish between the different commands that
3093  *       can be passed to the IOCTL functions.
3094  *
3095  * Entry point for the Ioctl.
3096  */
3097 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3098 {
3099         struct vxgedev *vdev = netdev_priv(dev);
3100         int ret;
3101
3102         switch (cmd) {
3103         case SIOCSHWTSTAMP:
3104                 ret = vxge_hwtstamp_ioctl(vdev, rq->ifr_data);
3105                 if (ret)
3106                         return ret;
3107                 break;
3108         default:
3109                 return -EOPNOTSUPP;
3110         }
3111
3112         return 0;
3113 }
3114
3115 /**
3116  * vxge_tx_watchdog
3117  * @dev: pointer to net device structure
3118  *
3119  * Watchdog for transmit side.
3120  * This function is triggered if the Tx Queue is stopped
3121  * for a pre-defined amount of time when the Interface is still up.
3122  */
3123 static void vxge_tx_watchdog(struct net_device *dev)
3124 {
3125         struct vxgedev *vdev;
3126
3127         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3128
3129         vdev = netdev_priv(dev);
3130
3131         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3132
3133         schedule_work(&vdev->reset_task);
3134         vxge_debug_entryexit(VXGE_TRACE,
3135                 "%s:%d  Exiting...", __func__, __LINE__);
3136 }
3137
3138 /**
3139  * vxge_vlan_rx_register
3140  * @dev: net device pointer.
3141  * @grp: vlan group
3142  *
3143  * Vlan group registration
3144  */
3145 static void
3146 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3147 {
3148         struct vxgedev *vdev;
3149         struct vxge_vpath *vpath;
3150         int vp;
3151         u64 vid;
3152         enum vxge_hw_status status;
3153         int i;
3154
3155         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3156
3157         vdev = netdev_priv(dev);
3158
3159         vpath = &vdev->vpaths[0];
3160         if ((NULL == grp) && (vpath->is_open)) {
3161                 /* Get the first vlan */
3162                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3163
3164                 while (status == VXGE_HW_OK) {
3165
3166                         /* Delete this vlan from the vid table */
3167                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3168                                 vpath = &vdev->vpaths[vp];
3169                                 if (!vpath->is_open)
3170                                         continue;
3171
3172                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3173                         }
3174
3175                         /* Get the next vlan to be deleted */
3176                         vpath = &vdev->vpaths[0];
3177                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3178                 }
3179         }
3180
3181         vdev->vlgrp = grp;
3182
3183         for (i = 0; i < vdev->no_of_vpath; i++) {
3184                 if (vdev->vpaths[i].is_configured)
3185                         vdev->vpaths[i].ring.vlgrp = grp;
3186         }
3187
3188         vxge_debug_entryexit(VXGE_TRACE,
3189                 "%s:%d  Exiting...", __func__, __LINE__);
3190 }
3191
3192 /**
3193  * vxge_vlan_rx_add_vid
3194  * @dev: net device pointer.
3195  * @vid: vid
3196  *
3197  * Add the vlan id to the devices vlan id table
3198  */
3199 static void
3200 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3201 {
3202         struct vxgedev *vdev;
3203         struct vxge_vpath *vpath;
3204         int vp_id;
3205
3206         vdev = netdev_priv(dev);
3207
3208         /* Add these vlan to the vid table */
3209         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3210                 vpath = &vdev->vpaths[vp_id];
3211                 if (!vpath->is_open)
3212                         continue;
3213                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3214         }
3215 }
3216
3217 /**
3218  * vxge_vlan_rx_add_vid
3219  * @dev: net device pointer.
3220  * @vid: vid
3221  *
3222  * Remove the vlan id from the device's vlan id table
3223  */
3224 static void
3225 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3226 {
3227         struct vxgedev *vdev;
3228         struct vxge_vpath *vpath;
3229         int vp_id;
3230
3231         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3232
3233         vdev = netdev_priv(dev);
3234
3235         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3236
3237         /* Delete this vlan from the vid table */
3238         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3239                 vpath = &vdev->vpaths[vp_id];
3240                 if (!vpath->is_open)
3241                         continue;
3242                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3243         }
3244         vxge_debug_entryexit(VXGE_TRACE,
3245                 "%s:%d  Exiting...", __func__, __LINE__);
3246 }
3247
3248 static const struct net_device_ops vxge_netdev_ops = {
3249         .ndo_open               = vxge_open,
3250         .ndo_stop               = vxge_close,
3251         .ndo_get_stats64        = vxge_get_stats64,
3252         .ndo_start_xmit         = vxge_xmit,
3253         .ndo_validate_addr      = eth_validate_addr,
3254         .ndo_set_multicast_list = vxge_set_multicast,
3255         .ndo_do_ioctl           = vxge_ioctl,
3256         .ndo_set_mac_address    = vxge_set_mac_addr,
3257         .ndo_change_mtu         = vxge_change_mtu,
3258         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3259         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3260         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3261         .ndo_tx_timeout         = vxge_tx_watchdog,
3262 #ifdef CONFIG_NET_POLL_CONTROLLER
3263         .ndo_poll_controller    = vxge_netpoll,
3264 #endif
3265 };
3266
3267 static int __devinit vxge_device_revision(struct vxgedev *vdev)
3268 {
3269         int ret;
3270         u8 revision;
3271
3272         ret = pci_read_config_byte(vdev->pdev, PCI_REVISION_ID, &revision);
3273         if (ret)
3274                 return -EIO;
3275
3276         vdev->titan1 = (revision == VXGE_HW_TITAN1_PCI_REVISION);
3277         return 0;
3278 }
3279
3280 static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3281                                           struct vxge_config *config,
3282                                           int high_dma, int no_of_vpath,
3283                                           struct vxgedev **vdev_out)
3284 {
3285         struct net_device *ndev;
3286         enum vxge_hw_status status = VXGE_HW_OK;
3287         struct vxgedev *vdev;
3288         int ret = 0, no_of_queue = 1;
3289         u64 stat;
3290
3291         *vdev_out = NULL;
3292         if (config->tx_steering_type)
3293                 no_of_queue = no_of_vpath;
3294
3295         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3296                         no_of_queue);
3297         if (ndev == NULL) {
3298                 vxge_debug_init(
3299                         vxge_hw_device_trace_level_get(hldev),
3300                 "%s : device allocation failed", __func__);
3301                 ret = -ENODEV;
3302                 goto _out0;
3303         }
3304
3305         vxge_debug_entryexit(
3306                 vxge_hw_device_trace_level_get(hldev),
3307                 "%s: %s:%d  Entering...",
3308                 ndev->name, __func__, __LINE__);
3309
3310         vdev = netdev_priv(ndev);
3311         memset(vdev, 0, sizeof(struct vxgedev));
3312
3313         vdev->ndev = ndev;
3314         vdev->devh = hldev;
3315         vdev->pdev = hldev->pdev;
3316         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3317         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3318         vdev->rx_hwts = 0;
3319
3320         ret = vxge_device_revision(vdev);
3321         if (ret < 0)
3322                 goto _out1;
3323
3324         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3325
3326         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3327                                 NETIF_F_HW_VLAN_FILTER;
3328         /*  Driver entry points */
3329         ndev->irq = vdev->pdev->irq;
3330         ndev->base_addr = (unsigned long) hldev->bar0;
3331
3332         ndev->netdev_ops = &vxge_netdev_ops;
3333
3334         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3335         INIT_WORK(&vdev->reset_task, vxge_reset);
3336
3337         vxge_initialize_ethtool_ops(ndev);
3338
3339         if (vdev->config.rth_steering != NO_STEERING) {
3340                 ndev->features |= NETIF_F_RXHASH;
3341                 hldev->config.rth_en = VXGE_HW_RTH_ENABLE;
3342         }
3343
3344         /* Allocate memory for vpath */
3345         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3346                                 no_of_vpath, GFP_KERNEL);
3347         if (!vdev->vpaths) {
3348                 vxge_debug_init(VXGE_ERR,
3349                         "%s: vpath memory allocation failed",
3350                         vdev->ndev->name);
3351                 ret = -ENODEV;
3352                 goto _out1;
3353         }
3354
3355         ndev->features |= NETIF_F_SG;
3356
3357         ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3358         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3359                 "%s : checksuming enabled", __func__);
3360
3361         if (high_dma) {
3362                 ndev->features |= NETIF_F_HIGHDMA;
3363                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3364                         "%s : using High DMA", __func__);
3365         }
3366
3367         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3368
3369         if (vdev->config.gro_enable)
3370                 ndev->features |= NETIF_F_GRO;
3371
3372         if (register_netdev(ndev)) {
3373                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3374                         "%s: %s : device registration failed!",
3375                         ndev->name, __func__);
3376                 ret = -ENODEV;
3377                 goto _out2;
3378         }
3379
3380         /*  Set the factory defined MAC address initially */
3381         ndev->addr_len = ETH_ALEN;
3382
3383         /* Make Link state as off at this point, when the Link change
3384          * interrupt comes the state will be automatically changed to
3385          * the right state.
3386          */
3387         netif_carrier_off(ndev);
3388
3389         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3390                 "%s: Ethernet device registered",
3391                 ndev->name);
3392
3393         hldev->ndev = ndev;
3394         *vdev_out = vdev;
3395
3396         /* Resetting the Device stats */
3397         status = vxge_hw_mrpcim_stats_access(
3398                                 hldev,
3399                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3400                                 0,
3401                                 0,
3402                                 &stat);
3403
3404         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3405                 vxge_debug_init(
3406                         vxge_hw_device_trace_level_get(hldev),
3407                         "%s: device stats clear returns"
3408                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3409
3410         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3411                 "%s: %s:%d  Exiting...",
3412                 ndev->name, __func__, __LINE__);
3413
3414         return ret;
3415 _out2:
3416         kfree(vdev->vpaths);
3417 _out1:
3418         free_netdev(ndev);
3419 _out0:
3420         return ret;
3421 }
3422
3423 /*
3424  * vxge_device_unregister
3425  *
3426  * This function will unregister and free network device
3427  */
3428 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3429 {
3430         struct vxgedev *vdev;
3431         struct net_device *dev;
3432         char buf[IFNAMSIZ];
3433
3434         dev = hldev->ndev;
3435         vdev = netdev_priv(dev);
3436
3437         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3438                              __func__, __LINE__);
3439
3440         strncpy(buf, dev->name, IFNAMSIZ);
3441
3442         flush_work_sync(&vdev->reset_task);
3443
3444         /* in 2.6 will call stop() if device is up */
3445         unregister_netdev(dev);
3446
3447         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3448                         buf);
3449         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3450                              __func__, __LINE__);
3451 }
3452
3453 /*
3454  * vxge_callback_crit_err
3455  *
3456  * This function is called by the alarm handler in interrupt context.
3457  * Driver must analyze it based on the event type.
3458  */
3459 static void
3460 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3461                         enum vxge_hw_event type, u64 vp_id)
3462 {
3463         struct net_device *dev = hldev->ndev;
3464         struct vxgedev *vdev = netdev_priv(dev);
3465         struct vxge_vpath *vpath = NULL;
3466         int vpath_idx;
3467
3468         vxge_debug_entryexit(vdev->level_trace,
3469                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3470
3471         /* Note: This event type should be used for device wide
3472          * indications only - Serious errors, Slot freeze and critical errors
3473          */
3474         vdev->cric_err_event = type;
3475
3476         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3477                 vpath = &vdev->vpaths[vpath_idx];
3478                 if (vpath->device_id == vp_id)
3479                         break;
3480         }
3481
3482         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3483                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3484                         vxge_debug_init(VXGE_ERR,
3485                                 "%s: Slot is frozen", vdev->ndev->name);
3486                 } else if (type == VXGE_HW_EVENT_SERR) {
3487                         vxge_debug_init(VXGE_ERR,
3488                                 "%s: Encountered Serious Error",
3489                                 vdev->ndev->name);
3490                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3491                         vxge_debug_init(VXGE_ERR,
3492                                 "%s: Encountered Critical Error",
3493                                 vdev->ndev->name);
3494         }
3495
3496         if ((type == VXGE_HW_EVENT_SERR) ||
3497                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3498                 if (unlikely(vdev->exec_mode))
3499                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3500         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3501                 vxge_hw_device_mask_all(hldev);
3502                 if (unlikely(vdev->exec_mode))
3503                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3504         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3505                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3506
3507                 if (unlikely(vdev->exec_mode))
3508                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3509                 else {
3510                         /* check if this vpath is already set for reset */
3511                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3512
3513                                 /* disable interrupts for this vpath */
3514                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3515
3516                                 /* stop the queue for this vpath */
3517                                 netif_tx_stop_queue(vpath->fifo.txq);
3518                         }
3519                 }
3520         }
3521
3522         vxge_debug_entryexit(vdev->level_trace,
3523                 "%s: %s:%d  Exiting...",
3524                 vdev->ndev->name, __func__, __LINE__);
3525 }
3526
3527 static void verify_bandwidth(void)
3528 {
3529         int i, band_width, total = 0, equal_priority = 0;
3530
3531         /* 1. If user enters 0 for some fifo, give equal priority to all */
3532         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3533                 if (bw_percentage[i] == 0) {
3534                         equal_priority = 1;
3535                         break;
3536                 }
3537         }
3538
3539         if (!equal_priority) {
3540                 /* 2. If sum exceeds 100, give equal priority to all */
3541                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3542                         if (bw_percentage[i] == 0xFF)
3543                                 break;
3544
3545                         total += bw_percentage[i];
3546                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3547                                 equal_priority = 1;
3548                                 break;
3549                         }
3550                 }
3551         }
3552
3553         if (!equal_priority) {
3554                 /* Is all the bandwidth consumed? */
3555                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3556                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3557                                 /* Split rest of bw equally among next VPs*/
3558                                 band_width =
3559                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3560                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3561                                 if (band_width < 2) /* min of 2% */
3562                                         equal_priority = 1;
3563                                 else {
3564                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3565                                                 i++)
3566                                                 bw_percentage[i] =
3567                                                         band_width;
3568                                 }
3569                         }
3570                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3571                         equal_priority = 1;
3572         }
3573
3574         if (equal_priority) {
3575                 vxge_debug_init(VXGE_ERR,
3576                         "%s: Assigning equal bandwidth to all the vpaths",
3577                         VXGE_DRIVER_NAME);
3578                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3579                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3580                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3581                         bw_percentage[i] = bw_percentage[0];
3582         }
3583 }
3584
3585 /*
3586  * Vpath configuration
3587  */
3588 static int __devinit vxge_config_vpaths(
3589                         struct vxge_hw_device_config *device_config,
3590                         u64 vpath_mask, struct vxge_config *config_param)
3591 {
3592         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3593         u32 txdl_size, txdl_per_memblock;
3594
3595         temp = driver_config->vpath_per_dev;
3596         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3597                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3598                 /* No more CPU. Return vpath number as zero.*/
3599                 if (driver_config->g_no_cpus == -1)
3600                         return 0;
3601
3602                 if (!driver_config->g_no_cpus)
3603                         driver_config->g_no_cpus = num_online_cpus();
3604
3605                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3606                 if (!driver_config->vpath_per_dev)
3607                         driver_config->vpath_per_dev = 1;
3608
3609                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3610                         if (!vxge_bVALn(vpath_mask, i, 1))
3611                                 continue;
3612                         else
3613                                 default_no_vpath++;
3614                 if (default_no_vpath < driver_config->vpath_per_dev)
3615                         driver_config->vpath_per_dev = default_no_vpath;
3616
3617                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3618                                 (driver_config->vpath_per_dev * 2);
3619                 if (driver_config->g_no_cpus <= 0)
3620                         driver_config->g_no_cpus = -1;
3621         }
3622
3623         if (driver_config->vpath_per_dev == 1) {
3624                 vxge_debug_ll_config(VXGE_TRACE,
3625                         "%s: Disable tx and rx steering, "
3626                         "as single vpath is configured", VXGE_DRIVER_NAME);
3627                 config_param->rth_steering = NO_STEERING;
3628                 config_param->tx_steering_type = NO_STEERING;
3629                 device_config->rth_en = 0;
3630         }
3631
3632         /* configure bandwidth */
3633         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3634                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3635
3636         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3637                 device_config->vp_config[i].vp_id = i;
3638                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3639                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3640                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3641                                 vxge_debug_ll_config(VXGE_TRACE,
3642                                         "%s: vpath: %d is not available",
3643                                         VXGE_DRIVER_NAME, i);
3644                                 continue;
3645                         } else {
3646                                 vxge_debug_ll_config(VXGE_TRACE,
3647                                         "%s: vpath: %d available",
3648                                         VXGE_DRIVER_NAME, i);
3649                                 no_of_vpaths++;
3650                         }
3651                 } else {
3652                         vxge_debug_ll_config(VXGE_TRACE,
3653                                 "%s: vpath: %d is not configured, "
3654                                 "max_config_vpath exceeded",
3655                                 VXGE_DRIVER_NAME, i);
3656                         break;
3657                 }
3658
3659                 /* Configure Tx fifo's */
3660                 device_config->vp_config[i].fifo.enable =
3661                                                 VXGE_HW_FIFO_ENABLE;
3662                 device_config->vp_config[i].fifo.max_frags =
3663                                 MAX_SKB_FRAGS + 1;
3664                 device_config->vp_config[i].fifo.memblock_size =
3665                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3666
3667                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3668                                 sizeof(struct vxge_hw_fifo_txd);
3669                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3670
3671                 device_config->vp_config[i].fifo.fifo_blocks =
3672                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3673
3674                 device_config->vp_config[i].fifo.intr =
3675                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3676
3677                 /* Configure tti properties */
3678                 device_config->vp_config[i].tti.intr_enable =
3679                                         VXGE_HW_TIM_INTR_ENABLE;
3680
3681                 device_config->vp_config[i].tti.btimer_val =
3682                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3683
3684                 device_config->vp_config[i].tti.timer_ac_en =
3685                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3686
3687                 /* For msi-x with napi (each vector has a handler of its own) -
3688                  * Set CI to OFF for all vpaths
3689                  */
3690                 device_config->vp_config[i].tti.timer_ci_en =
3691                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3692
3693                 device_config->vp_config[i].tti.timer_ri_en =
3694                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3695
3696                 device_config->vp_config[i].tti.util_sel =
3697                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3698
3699                 device_config->vp_config[i].tti.ltimer_val =
3700                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3701
3702                 device_config->vp_config[i].tti.rtimer_val =
3703                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3704
3705                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3706                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3707                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3708                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3709                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3710                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3711                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3712
3713                 /* Configure Rx rings */
3714                 device_config->vp_config[i].ring.enable  =
3715                                                 VXGE_HW_RING_ENABLE;
3716
3717                 device_config->vp_config[i].ring.ring_blocks  =
3718                                                 VXGE_HW_DEF_RING_BLOCKS;
3719
3720                 device_config->vp_config[i].ring.buffer_mode =
3721                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3722
3723                 device_config->vp_config[i].ring.rxds_limit  =
3724                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3725
3726                 device_config->vp_config[i].ring.scatter_mode =
3727                                         VXGE_HW_RING_SCATTER_MODE_A;
3728
3729                 /* Configure rti properties */
3730                 device_config->vp_config[i].rti.intr_enable =
3731                                         VXGE_HW_TIM_INTR_ENABLE;
3732
3733                 device_config->vp_config[i].rti.btimer_val =
3734                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3735
3736                 device_config->vp_config[i].rti.timer_ac_en =
3737                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3738
3739                 device_config->vp_config[i].rti.timer_ci_en =
3740                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3741
3742                 device_config->vp_config[i].rti.timer_ri_en =
3743                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3744
3745                 device_config->vp_config[i].rti.util_sel =
3746                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3747
3748                 device_config->vp_config[i].rti.urange_a =
3749                                                 RTI_RX_URANGE_A;
3750                 device_config->vp_config[i].rti.urange_b =
3751                                                 RTI_RX_URANGE_B;
3752                 device_config->vp_config[i].rti.urange_c =
3753                                                 RTI_RX_URANGE_C;
3754                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3755                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3756                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3757                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3758
3759                 device_config->vp_config[i].rti.rtimer_val =
3760                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3761
3762                 device_config->vp_config[i].rti.ltimer_val =
3763                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3764
3765                 device_config->vp_config[i].rpa_strip_vlan_tag =
3766                         vlan_tag_strip;
3767         }
3768
3769         driver_config->vpath_per_dev = temp;
3770         return no_of_vpaths;
3771 }
3772
3773 /* initialize device configuratrions */
3774 static void __devinit vxge_device_config_init(
3775                                 struct vxge_hw_device_config *device_config,
3776                                 int *intr_type)
3777 {
3778         /* Used for CQRQ/SRQ. */
3779         device_config->dma_blockpool_initial =
3780                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3781
3782         device_config->dma_blockpool_max =
3783                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3784
3785         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3786                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3787
3788 #ifndef CONFIG_PCI_MSI
3789         vxge_debug_init(VXGE_ERR,
3790                 "%s: This Kernel does not support "
3791                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3792         *intr_type = INTA;
3793 #endif
3794
3795         /* Configure whether MSI-X or IRQL. */
3796         switch (*intr_type) {
3797         case INTA:
3798                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3799                 break;
3800
3801         case MSI_X:
3802                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3803                 break;
3804         }
3805
3806         /* Timer period between device poll */
3807         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3808
3809         /* Configure mac based steering. */
3810         device_config->rts_mac_en = addr_learn_en;
3811
3812         /* Configure Vpaths */
3813         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3814
3815         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3816                         __func__);
3817         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3818                         device_config->intr_mode);
3819         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3820                         device_config->device_poll_millis);
3821         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3822                         device_config->rth_en);
3823         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3824                         device_config->rth_it_type);
3825 }
3826
3827 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3828 {
3829         int i;
3830
3831         vxge_debug_init(VXGE_TRACE,
3832                 "%s: %d Vpath(s) opened",
3833                 vdev->ndev->name, vdev->no_of_vpath);
3834
3835         switch (vdev->config.intr_type) {
3836         case INTA:
3837                 vxge_debug_init(VXGE_TRACE,
3838                         "%s: Interrupt type INTA", vdev->ndev->name);
3839                 break;
3840
3841         case MSI_X:
3842                 vxge_debug_init(VXGE_TRACE,
3843                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3844                 break;
3845         }
3846
3847         if (vdev->config.rth_steering) {
3848                 vxge_debug_init(VXGE_TRACE,
3849                         "%s: RTH steering enabled for TCP_IPV4",
3850                         vdev->ndev->name);
3851         } else {
3852                 vxge_debug_init(VXGE_TRACE,
3853                         "%s: RTH steering disabled", vdev->ndev->name);
3854         }
3855
3856         switch (vdev->config.tx_steering_type) {
3857         case NO_STEERING:
3858                 vxge_debug_init(VXGE_TRACE,
3859                         "%s: Tx steering disabled", vdev->ndev->name);
3860                 break;
3861         case TX_PRIORITY_STEERING:
3862                 vxge_debug_init(VXGE_TRACE,
3863                         "%s: Unsupported tx steering option",
3864                         vdev->ndev->name);
3865                 vxge_debug_init(VXGE_TRACE,
3866                         "%s: Tx steering disabled", vdev->ndev->name);
3867                 vdev->config.tx_steering_type = 0;
3868                 break;
3869         case TX_VLAN_STEERING:
3870                 vxge_debug_init(VXGE_TRACE,
3871                         "%s: Unsupported tx steering option",
3872                         vdev->ndev->name);
3873                 vxge_debug_init(VXGE_TRACE,
3874                         "%s: Tx steering disabled", vdev->ndev->name);
3875                 vdev->config.tx_steering_type = 0;
3876                 break;
3877         case TX_MULTIQ_STEERING:
3878                 vxge_debug_init(VXGE_TRACE,
3879                         "%s: Tx multiqueue steering enabled",
3880                         vdev->ndev->name);
3881                 break;
3882         case TX_PORT_STEERING:
3883                 vxge_debug_init(VXGE_TRACE,
3884                         "%s: Tx port steering enabled",
3885                         vdev->ndev->name);
3886                 break;
3887         default:
3888                 vxge_debug_init(VXGE_ERR,
3889                         "%s: Unsupported tx steering type",
3890                         vdev->ndev->name);
3891                 vxge_debug_init(VXGE_TRACE,
3892                         "%s: Tx steering disabled", vdev->ndev->name);
3893                 vdev->config.tx_steering_type = 0;
3894         }
3895
3896         if (vdev->config.gro_enable) {
3897                 vxge_debug_init(VXGE_ERR,
3898                         "%s: Generic receive offload enabled",
3899                         vdev->ndev->name);
3900         } else
3901                 vxge_debug_init(VXGE_TRACE,
3902                         "%s: Generic receive offload disabled",
3903                         vdev->ndev->name);
3904
3905         if (vdev->config.addr_learn_en)
3906                 vxge_debug_init(VXGE_TRACE,
3907                         "%s: MAC Address learning enabled", vdev->ndev->name);
3908
3909         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3910                 if (!vxge_bVALn(vpath_mask, i, 1))
3911                         continue;
3912                 vxge_debug_ll_config(VXGE_TRACE,
3913                         "%s: MTU size - %d", vdev->ndev->name,
3914                         ((struct __vxge_hw_device  *)(vdev->devh))->
3915                                 config.vp_config[i].mtu);
3916                 vxge_debug_init(VXGE_TRACE,
3917                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3918                         ((struct __vxge_hw_device  *)(vdev->devh))->
3919                                 config.vp_config[i].rpa_strip_vlan_tag
3920                         ? "Enabled" : "Disabled");
3921                 vxge_debug_ll_config(VXGE_TRACE,
3922                         "%s: Max frags : %d", vdev->ndev->name,
3923                         ((struct __vxge_hw_device  *)(vdev->devh))->
3924                                 config.vp_config[i].fifo.max_frags);
3925                 break;
3926         }
3927 }
3928
3929 #ifdef CONFIG_PM
3930 /**
3931  * vxge_pm_suspend - vxge power management suspend entry point
3932  *
3933  */
3934 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3935 {
3936         return -ENOSYS;
3937 }
3938 /**
3939  * vxge_pm_resume - vxge power management resume entry point
3940  *
3941  */
3942 static int vxge_pm_resume(struct pci_dev *pdev)
3943 {
3944         return -ENOSYS;
3945 }
3946
3947 #endif
3948
3949 /**
3950  * vxge_io_error_detected - called when PCI error is detected
3951  * @pdev: Pointer to PCI device
3952  * @state: The current pci connection state
3953  *
3954  * This function is called after a PCI bus error affecting
3955  * this device has been detected.
3956  */
3957 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3958                                                 pci_channel_state_t state)
3959 {
3960         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
3961         struct net_device *netdev = hldev->ndev;
3962
3963         netif_device_detach(netdev);
3964
3965         if (state == pci_channel_io_perm_failure)
3966                 return PCI_ERS_RESULT_DISCONNECT;
3967
3968         if (netif_running(netdev)) {
3969                 /* Bring down the card, while avoiding PCI I/O */
3970                 do_vxge_close(netdev, 0);
3971         }
3972
3973         pci_disable_device(pdev);
3974
3975         return PCI_ERS_RESULT_NEED_RESET;
3976 }
3977
3978 /**
3979  * vxge_io_slot_reset - called after the pci bus has been reset.
3980  * @pdev: Pointer to PCI device
3981  *
3982  * Restart the card from scratch, as if from a cold-boot.
3983  * At this point, the card has exprienced a hard reset,
3984  * followed by fixups by BIOS, and has its config space
3985  * set up identically to what it was at cold boot.
3986  */
3987 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3988 {
3989         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
3990         struct net_device *netdev = hldev->ndev;
3991
3992         struct vxgedev *vdev = netdev_priv(netdev);
3993
3994         if (pci_enable_device(pdev)) {
3995                 netdev_err(netdev, "Cannot re-enable device after reset\n");
3996                 return PCI_ERS_RESULT_DISCONNECT;
3997         }
3998
3999         pci_set_master(pdev);
4000         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4001
4002         return PCI_ERS_RESULT_RECOVERED;
4003 }
4004
4005 /**
4006  * vxge_io_resume - called when traffic can start flowing again.
4007  * @pdev: Pointer to PCI device
4008  *
4009  * This callback is called when the error recovery driver tells
4010  * us that its OK to resume normal operation.
4011  */
4012 static void vxge_io_resume(struct pci_dev *pdev)
4013 {
4014         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4015         struct net_device *netdev = hldev->ndev;
4016
4017         if (netif_running(netdev)) {
4018                 if (vxge_open(netdev)) {
4019                         netdev_err(netdev,
4020                                    "Can't bring device back up after reset\n");
4021                         return;
4022                 }
4023         }
4024
4025         netif_device_attach(netdev);
4026 }
4027
4028 static inline u32 vxge_get_num_vfs(u64 function_mode)
4029 {
4030         u32 num_functions = 0;
4031
4032         switch (function_mode) {
4033         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4034         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4035                 num_functions = 8;
4036                 break;
4037         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4038                 num_functions = 1;
4039                 break;
4040         case VXGE_HW_FUNCTION_MODE_SRIOV:
4041         case VXGE_HW_FUNCTION_MODE_MRIOV:
4042         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4043                 num_functions = 17;
4044                 break;
4045         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4046                 num_functions = 4;
4047                 break;
4048         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4049                 num_functions = 2;
4050                 break;
4051         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4052                 num_functions = 8; /* TODO */
4053                 break;
4054         }
4055         return num_functions;
4056 }
4057
4058 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4059 {
4060         struct __vxge_hw_device *hldev = vdev->devh;
4061         u32 maj, min, bld, cmaj, cmin, cbld;
4062         enum vxge_hw_status status;
4063         const struct firmware *fw;
4064         int ret;
4065
4066         ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4067         if (ret) {
4068                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4069                                 VXGE_DRIVER_NAME, fw_name);
4070                 goto out;
4071         }
4072
4073         /* Load the new firmware onto the adapter */
4074         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4075         if (status != VXGE_HW_OK) {
4076                 vxge_debug_init(VXGE_ERR,
4077                                 "%s: FW image download to adapter failed '%s'.",
4078                                 VXGE_DRIVER_NAME, fw_name);
4079                 ret = -EIO;
4080                 goto out;
4081         }
4082
4083         /* Read the version of the new firmware */
4084         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4085         if (status != VXGE_HW_OK) {
4086                 vxge_debug_init(VXGE_ERR,
4087                                 "%s: Upgrade read version failed '%s'.",
4088                                 VXGE_DRIVER_NAME, fw_name);
4089                 ret = -EIO;
4090                 goto out;
4091         }
4092
4093         cmaj = vdev->config.device_hw_info.fw_version.major;
4094         cmin = vdev->config.device_hw_info.fw_version.minor;
4095         cbld = vdev->config.device_hw_info.fw_version.build;
4096         /* It's possible the version in /lib/firmware is not the latest version.
4097          * If so, we could get into a loop of trying to upgrade to the latest
4098          * and flashing the older version.
4099          */
4100         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4101             !override) {
4102                 ret = -EINVAL;
4103                 goto out;
4104         }
4105
4106         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4107                maj, min, bld);
4108
4109         /* Flash the adapter with the new firmware */
4110         status = vxge_hw_flash_fw(hldev);
4111         if (status != VXGE_HW_OK) {
4112                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4113                                 VXGE_DRIVER_NAME, fw_name);
4114                 ret = -EIO;
4115                 goto out;
4116         }
4117
4118         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4119                "hard reset before using, thus requiring a system reboot or a "
4120                "hotplug event.\n");
4121
4122 out:
4123         release_firmware(fw);
4124         return ret;
4125 }
4126
4127 static int vxge_probe_fw_update(struct vxgedev *vdev)
4128 {
4129         u32 maj, min, bld;
4130         int ret, gpxe = 0;
4131         char *fw_name;
4132
4133         maj = vdev->config.device_hw_info.fw_version.major;
4134         min = vdev->config.device_hw_info.fw_version.minor;
4135         bld = vdev->config.device_hw_info.fw_version.build;
4136
4137         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4138                 return 0;
4139
4140         /* Ignore the build number when determining if the current firmware is
4141          * "too new" to load the driver
4142          */
4143         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4144                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4145                                 "version, unable to load driver\n",
4146                                 VXGE_DRIVER_NAME);
4147                 return -EINVAL;
4148         }
4149
4150         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4151          * work with this driver.
4152          */
4153         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4154                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4155                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4156                 return -EINVAL;
4157         }
4158
4159         /* If file not specified, determine gPXE or not */
4160         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4161                 int i;
4162                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4163                         if (vdev->devh->eprom_versions[i]) {
4164                                 gpxe = 1;
4165                                 break;
4166                         }
4167         }
4168         if (gpxe)
4169                 fw_name = "vxge/X3fw-pxe.ncf";
4170         else
4171                 fw_name = "vxge/X3fw.ncf";
4172
4173         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4174         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4175          * probe, so ignore them
4176          */
4177         if (ret != -EINVAL && ret != -ENOENT)
4178                 return -EIO;
4179         else
4180                 ret = 0;
4181
4182         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4183             VXGE_FW_VER(maj, min, 0)) {
4184                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4185                                 " be used with this driver.\n"
4186                                 "Please get the latest version from "
4187                                 "ftp://ftp.s2io.com/pub/X3100-Drivers/FIRMWARE",
4188                                 VXGE_DRIVER_NAME, maj, min, bld);
4189                 return -EINVAL;
4190         }
4191
4192         return ret;
4193 }
4194
4195 static int __devinit is_sriov_initialized(struct pci_dev *pdev)
4196 {
4197         int pos;
4198         u16 ctrl;
4199
4200         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4201         if (pos) {
4202                 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4203                 if (ctrl & PCI_SRIOV_CTRL_VFE)
4204                         return 1;
4205         }
4206         return 0;
4207 }
4208
4209 /**
4210  * vxge_probe
4211  * @pdev : structure containing the PCI related information of the device.
4212  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4213  * Description:
4214  * This function is called when a new PCI device gets detected and initializes
4215  * it.
4216  * Return value:
4217  * returns 0 on success and negative on failure.
4218  *
4219  */
4220 static int __devinit
4221 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4222 {
4223         struct __vxge_hw_device *hldev;
4224         enum vxge_hw_status status;
4225         int ret;
4226         int high_dma = 0;
4227         u64 vpath_mask = 0;
4228         struct vxgedev *vdev;
4229         struct vxge_config *ll_config = NULL;
4230         struct vxge_hw_device_config *device_config = NULL;
4231         struct vxge_hw_device_attr attr;
4232         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4233         u8 *macaddr;
4234         struct vxge_mac_addrs *entry;
4235         static int bus = -1, device = -1;
4236         u32 host_type;
4237         u8 new_device = 0;
4238         enum vxge_hw_status is_privileged;
4239         u32 function_mode;
4240         u32 num_vfs = 0;
4241
4242         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4243         attr.pdev = pdev;
4244
4245         /* In SRIOV-17 mode, functions of the same adapter
4246          * can be deployed on different buses
4247          */
4248         if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4249             !pdev->is_virtfn)
4250                 new_device = 1;
4251
4252         bus = pdev->bus->number;
4253         device = PCI_SLOT(pdev->devfn);
4254
4255         if (new_device) {
4256                 if (driver_config->config_dev_cnt &&
4257                    (driver_config->config_dev_cnt !=
4258                         driver_config->total_dev_cnt))
4259                         vxge_debug_init(VXGE_ERR,
4260                                 "%s: Configured %d of %d devices",
4261                                 VXGE_DRIVER_NAME,
4262                                 driver_config->config_dev_cnt,
4263                                 driver_config->total_dev_cnt);
4264                 driver_config->config_dev_cnt = 0;
4265                 driver_config->total_dev_cnt = 0;
4266         }
4267
4268         /* Now making the CPU based no of vpath calculation
4269          * applicable for individual functions as well.
4270          */
4271         driver_config->g_no_cpus = 0;
4272         driver_config->vpath_per_dev = max_config_vpath;
4273
4274         driver_config->total_dev_cnt++;
4275         if (++driver_config->config_dev_cnt > max_config_dev) {
4276                 ret = 0;
4277                 goto _exit0;
4278         }
4279
4280         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4281                 GFP_KERNEL);
4282         if (!device_config) {
4283                 ret = -ENOMEM;
4284                 vxge_debug_init(VXGE_ERR,
4285                         "device_config : malloc failed %s %d",
4286                         __FILE__, __LINE__);
4287                 goto _exit0;
4288         }
4289
4290         ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4291         if (!ll_config) {
4292                 ret = -ENOMEM;
4293                 vxge_debug_init(VXGE_ERR,
4294                         "device_config : malloc failed %s %d",
4295                         __FILE__, __LINE__);
4296                 goto _exit0;
4297         }
4298         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4299         ll_config->intr_type = MSI_X;
4300         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4301         ll_config->rth_steering = RTH_STEERING;
4302
4303         /* get the default configuration parameters */
4304         vxge_hw_device_config_default_get(device_config);
4305
4306         /* initialize configuration parameters */
4307         vxge_device_config_init(device_config, &ll_config->intr_type);
4308
4309         ret = pci_enable_device(pdev);
4310         if (ret) {
4311                 vxge_debug_init(VXGE_ERR,
4312                         "%s : can not enable PCI device", __func__);
4313                 goto _exit0;
4314         }
4315
4316         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4317                 vxge_debug_ll_config(VXGE_TRACE,
4318                         "%s : using 64bit DMA", __func__);
4319
4320                 high_dma = 1;
4321
4322                 if (pci_set_consistent_dma_mask(pdev,
4323                                                 DMA_BIT_MASK(64))) {
4324                         vxge_debug_init(VXGE_ERR,
4325                                 "%s : unable to obtain 64bit DMA for "
4326                                 "consistent allocations", __func__);
4327                         ret = -ENOMEM;
4328                         goto _exit1;
4329                 }
4330         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4331                 vxge_debug_ll_config(VXGE_TRACE,
4332                         "%s : using 32bit DMA", __func__);
4333         } else {
4334                 ret = -ENOMEM;
4335                 goto _exit1;
4336         }
4337
4338         if (pci_request_region(pdev, 0, VXGE_DRIVER_NAME)) {
4339                 vxge_debug_init(VXGE_ERR,
4340                         "%s : request regions failed", __func__);
4341                 ret = -ENODEV;
4342                 goto _exit1;
4343         }
4344
4345         pci_set_master(pdev);
4346
4347         attr.bar0 = pci_ioremap_bar(pdev, 0);
4348         if (!attr.bar0) {
4349                 vxge_debug_init(VXGE_ERR,
4350                         "%s : cannot remap io memory bar0", __func__);
4351                 ret = -ENODEV;
4352                 goto _exit2;
4353         }
4354         vxge_debug_ll_config(VXGE_TRACE,
4355                 "pci ioremap bar0: %p:0x%llx",
4356                 attr.bar0,
4357                 (unsigned long long)pci_resource_start(pdev, 0));
4358
4359         status = vxge_hw_device_hw_info_get(attr.bar0,
4360                         &ll_config->device_hw_info);
4361         if (status != VXGE_HW_OK) {
4362                 vxge_debug_init(VXGE_ERR,
4363                         "%s: Reading of hardware info failed."
4364                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4365                 ret = -EINVAL;
4366                 goto _exit3;
4367         }
4368
4369         vpath_mask = ll_config->device_hw_info.vpath_mask;
4370         if (vpath_mask == 0) {
4371                 vxge_debug_ll_config(VXGE_TRACE,
4372                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4373                 ret = -EINVAL;
4374                 goto _exit3;
4375         }
4376
4377         vxge_debug_ll_config(VXGE_TRACE,
4378                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4379                 (unsigned long long)vpath_mask);
4380
4381         function_mode = ll_config->device_hw_info.function_mode;
4382         host_type = ll_config->device_hw_info.host_type;
4383         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4384                 ll_config->device_hw_info.func_id);
4385
4386         /* Check how many vpaths are available */
4387         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4388                 if (!((vpath_mask) & vxge_mBIT(i)))
4389                         continue;
4390                 max_vpath_supported++;
4391         }
4392
4393         if (new_device)
4394                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4395
4396         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4397         if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4398            (ll_config->intr_type != INTA)) {
4399                 ret = pci_enable_sriov(pdev, num_vfs);
4400                 if (ret)
4401                         vxge_debug_ll_config(VXGE_ERR,
4402                                 "Failed in enabling SRIOV mode: %d\n", ret);
4403                         /* No need to fail out, as an error here is non-fatal */
4404         }
4405
4406         /*
4407          * Configure vpaths and get driver configured number of vpaths
4408          * which is less than or equal to the maximum vpaths per function.
4409          */
4410         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4411         if (!no_of_vpath) {
4412                 vxge_debug_ll_config(VXGE_ERR,
4413                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4414                 ret = 0;
4415                 goto _exit3;
4416         }
4417
4418         /* Setting driver callbacks */
4419         attr.uld_callbacks.link_up = vxge_callback_link_up;
4420         attr.uld_callbacks.link_down = vxge_callback_link_down;
4421         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4422
4423         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4424         if (status != VXGE_HW_OK) {
4425                 vxge_debug_init(VXGE_ERR,
4426                         "Failed to initialize device (%d)", status);
4427                         ret = -EINVAL;
4428                         goto _exit3;
4429         }
4430
4431         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4432                         ll_config->device_hw_info.fw_version.minor,
4433                         ll_config->device_hw_info.fw_version.build) >=
4434             VXGE_EPROM_FW_VER) {
4435                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4436
4437                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4438                 if (status != VXGE_HW_OK) {
4439                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4440                                         VXGE_DRIVER_NAME);
4441                         /* This is a non-fatal error, continue */
4442                 }
4443
4444                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4445                         hldev->eprom_versions[i] = img[i].version;
4446                         if (!img[i].is_valid)
4447                                 break;
4448                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4449                                         "%d.%d.%d.%d\n", VXGE_DRIVER_NAME, i,
4450                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4451                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4452                                         VXGE_EPROM_IMG_FIX(img[i].version),
4453                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4454                 }
4455         }
4456
4457         /* if FCS stripping is not disabled in MAC fail driver load */
4458         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4459         if (status != VXGE_HW_OK) {
4460                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4461                                 " failing driver load", VXGE_DRIVER_NAME);
4462                 ret = -EINVAL;
4463                 goto _exit4;
4464         }
4465
4466         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4467
4468         /* set private device info */
4469         pci_set_drvdata(pdev, hldev);
4470
4471         ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4472         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4473         ll_config->addr_learn_en = addr_learn_en;
4474         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4475         ll_config->rth_hash_type_tcpipv4 = 1;
4476         ll_config->rth_hash_type_ipv4 = 0;
4477         ll_config->rth_hash_type_tcpipv6 = 0;
4478         ll_config->rth_hash_type_ipv6 = 0;
4479         ll_config->rth_hash_type_tcpipv6ex = 0;
4480         ll_config->rth_hash_type_ipv6ex = 0;
4481         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4482         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4483         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4484
4485         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4486                                    &vdev);
4487         if (ret) {
4488                 ret = -EINVAL;
4489                 goto _exit4;
4490         }
4491
4492         ret = vxge_probe_fw_update(vdev);
4493         if (ret)
4494                 goto _exit5;
4495
4496         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4497         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4498                 vxge_hw_device_trace_level_get(hldev));
4499
4500         /* set private HW device info */
4501         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4502         vdev->bar0 = attr.bar0;
4503         vdev->max_vpath_supported = max_vpath_supported;
4504         vdev->no_of_vpath = no_of_vpath;
4505
4506         /* Virtual Path count */
4507         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4508                 if (!vxge_bVALn(vpath_mask, i, 1))
4509                         continue;
4510                 if (j >= vdev->no_of_vpath)
4511                         break;
4512
4513                 vdev->vpaths[j].is_configured = 1;
4514                 vdev->vpaths[j].device_id = i;
4515                 vdev->vpaths[j].ring.driver_id = j;
4516                 vdev->vpaths[j].vdev = vdev;
4517                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4518                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4519                                 ll_config->device_hw_info.mac_addrs[i],
4520                                 ETH_ALEN);
4521
4522                 /* Initialize the mac address list header */
4523                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4524
4525                 vdev->vpaths[j].mac_addr_cnt = 0;
4526                 vdev->vpaths[j].mcast_addr_cnt = 0;
4527                 j++;
4528         }
4529         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4530         vdev->max_config_port = max_config_port;
4531
4532         vdev->vlan_tag_strip = vlan_tag_strip;
4533
4534         /* map the hashing selector table to the configured vpaths */
4535         for (i = 0; i < vdev->no_of_vpath; i++)
4536                 vdev->vpath_selector[i] = vpath_selector[i];
4537
4538         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4539
4540         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4541         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4542         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4543
4544         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4545                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4546
4547         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4548                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4549
4550         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4551                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4552
4553         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4554                 vdev->ndev->name, macaddr);
4555
4556         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4557                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4558
4559         vxge_debug_init(VXGE_TRACE,
4560                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4561                 ll_config->device_hw_info.fw_version.version,
4562                 ll_config->device_hw_info.fw_date.date);
4563
4564         if (new_device) {
4565                 switch (ll_config->device_hw_info.function_mode) {
4566                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4567                         vxge_debug_init(VXGE_TRACE,
4568                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4569                 break;
4570                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4571                         vxge_debug_init(VXGE_TRACE,
4572                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4573                 break;
4574                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4575                         vxge_debug_init(VXGE_TRACE,
4576                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4577                 break;
4578                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4579                         vxge_debug_init(VXGE_TRACE,
4580                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4581                 break;
4582                 }
4583         }
4584
4585         vxge_print_parm(vdev, vpath_mask);
4586
4587         /* Store the fw version for ethttool option */
4588         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4589         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4590         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4591
4592         /* Copy the station mac address to the list */
4593         for (i = 0; i < vdev->no_of_vpath; i++) {
4594                 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4595                 if (NULL == entry) {
4596                         vxge_debug_init(VXGE_ERR,
4597                                 "%s: mac_addr_list : memory allocation failed",
4598                                 vdev->ndev->name);
4599                         ret = -EPERM;
4600                         goto _exit6;
4601                 }
4602                 macaddr = (u8 *)&entry->macaddr;
4603                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4604                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4605                 vdev->vpaths[i].mac_addr_cnt = 1;
4606         }
4607
4608         kfree(device_config);
4609
4610         /*
4611          * INTA is shared in multi-function mode. This is unlike the INTA
4612          * implementation in MR mode, where each VH has its own INTA message.
4613          * - INTA is masked (disabled) as long as at least one function sets
4614          * its TITAN_MASK_ALL_INT.ALARM bit.
4615          * - INTA is unmasked (enabled) when all enabled functions have cleared
4616          * their own TITAN_MASK_ALL_INT.ALARM bit.
4617          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4618          * Though this driver leaves the top level interrupts unmasked while
4619          * leaving the required module interrupt bits masked on exit, there
4620          * could be a rougue driver around that does not follow this procedure
4621          * resulting in a failure to generate interrupts. The following code is
4622          * present to prevent such a failure.
4623          */
4624
4625         if (ll_config->device_hw_info.function_mode ==
4626                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4627                 if (vdev->config.intr_type == INTA)
4628                         vxge_hw_device_unmask_all(hldev);
4629
4630         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4631                 vdev->ndev->name, __func__, __LINE__);
4632
4633         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4634         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4635                 vxge_hw_device_trace_level_get(hldev));
4636
4637         kfree(ll_config);
4638         return 0;
4639
4640 _exit6:
4641         for (i = 0; i < vdev->no_of_vpath; i++)
4642                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4643 _exit5:
4644         vxge_device_unregister(hldev);
4645 _exit4:
4646         pci_disable_sriov(pdev);
4647         vxge_hw_device_terminate(hldev);
4648 _exit3:
4649         iounmap(attr.bar0);
4650 _exit2:
4651         pci_release_region(pdev, 0);
4652 _exit1:
4653         pci_disable_device(pdev);
4654 _exit0:
4655         kfree(ll_config);
4656         kfree(device_config);
4657         driver_config->config_dev_cnt--;
4658         pci_set_drvdata(pdev, NULL);
4659         return ret;
4660 }
4661
4662 /**
4663  * vxge_rem_nic - Free the PCI device
4664  * @pdev: structure containing the PCI related information of the device.
4665  * Description: This function is called by the Pci subsystem to release a
4666  * PCI device and free up all resource held up by the device.
4667  */
4668 static void __devexit vxge_remove(struct pci_dev *pdev)
4669 {
4670         struct __vxge_hw_device *hldev;
4671         struct vxgedev *vdev = NULL;
4672         struct net_device *dev;
4673         int i = 0;
4674
4675         hldev = pci_get_drvdata(pdev);
4676
4677         if (hldev == NULL)
4678                 return;
4679
4680         dev = hldev->ndev;
4681         vdev = netdev_priv(dev);
4682
4683         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4684
4685         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4686                         __func__);
4687         vxge_device_unregister(hldev);
4688
4689         for (i = 0; i < vdev->no_of_vpath; i++) {
4690                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4691                 vdev->vpaths[i].mcast_addr_cnt = 0;
4692                 vdev->vpaths[i].mac_addr_cnt = 0;
4693         }
4694
4695         kfree(vdev->vpaths);
4696
4697         iounmap(vdev->bar0);
4698
4699         /* we are safe to free it now */
4700         free_netdev(dev);
4701
4702         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4703                         __func__, __LINE__);
4704
4705         vxge_hw_device_terminate(hldev);
4706
4707         pci_disable_device(pdev);
4708         pci_release_region(pdev, 0);
4709         pci_set_drvdata(pdev, NULL);
4710         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4711                              __LINE__);
4712 }
4713
4714 static struct pci_error_handlers vxge_err_handler = {
4715         .error_detected = vxge_io_error_detected,
4716         .slot_reset = vxge_io_slot_reset,
4717         .resume = vxge_io_resume,
4718 };
4719
4720 static struct pci_driver vxge_driver = {
4721         .name = VXGE_DRIVER_NAME,
4722         .id_table = vxge_id_table,
4723         .probe = vxge_probe,
4724         .remove = __devexit_p(vxge_remove),
4725 #ifdef CONFIG_PM
4726         .suspend = vxge_pm_suspend,
4727         .resume = vxge_pm_resume,
4728 #endif
4729         .err_handler = &vxge_err_handler,
4730 };
4731
4732 static int __init
4733 vxge_starter(void)
4734 {
4735         int ret = 0;
4736
4737         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4738         pr_info("Driver version: %s\n", DRV_VERSION);
4739
4740         verify_bandwidth();
4741
4742         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4743         if (!driver_config)
4744                 return -ENOMEM;
4745
4746         ret = pci_register_driver(&vxge_driver);
4747         if (ret) {
4748                 kfree(driver_config);
4749                 goto err;
4750         }
4751
4752         if (driver_config->config_dev_cnt &&
4753            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4754                 vxge_debug_init(VXGE_ERR,
4755                         "%s: Configured %d of %d devices",
4756                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4757                         driver_config->total_dev_cnt);
4758 err:
4759         return ret;
4760 }
4761
4762 static void __exit
4763 vxge_closer(void)
4764 {
4765         pci_unregister_driver(&vxge_driver);
4766         kfree(driver_config);
4767 }
4768 module_init(vxge_starter);
4769 module_exit(vxge_closer);