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                 /* wait for all the vpath reset to complete */
1610                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1611                         while (test_bit(vp_id, &vdev->vp_reset))
1612                                 msleep(50);
1613                 }
1614
1615                 /* if execution mode is set to debug, don't reset the adapter */
1616                 if (unlikely(vdev->exec_mode)) {
1617                         vxge_debug_init(VXGE_ERR,
1618                                 "%s: execution mode is debug, returning..",
1619                                 vdev->ndev->name);
1620                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1621                         netif_tx_stop_all_queues(vdev->ndev);
1622                         return 0;
1623                 }
1624         }
1625
1626         if (event == VXGE_LL_FULL_RESET) {
1627                 vxge_hw_device_wait_receive_idle(vdev->devh);
1628                 vxge_hw_device_intr_disable(vdev->devh);
1629
1630                 switch (vdev->cric_err_event) {
1631                 case VXGE_HW_EVENT_UNKNOWN:
1632                         netif_tx_stop_all_queues(vdev->ndev);
1633                         vxge_debug_init(VXGE_ERR,
1634                                 "fatal: %s: Disabling device due to"
1635                                 "unknown error",
1636                                 vdev->ndev->name);
1637                         ret = -EPERM;
1638                         goto out;
1639                 case VXGE_HW_EVENT_RESET_START:
1640                         break;
1641                 case VXGE_HW_EVENT_RESET_COMPLETE:
1642                 case VXGE_HW_EVENT_LINK_DOWN:
1643                 case VXGE_HW_EVENT_LINK_UP:
1644                 case VXGE_HW_EVENT_ALARM_CLEARED:
1645                 case VXGE_HW_EVENT_ECCERR:
1646                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1647                         ret = -EPERM;
1648                         goto out;
1649                 case VXGE_HW_EVENT_FIFO_ERR:
1650                 case VXGE_HW_EVENT_VPATH_ERR:
1651                         break;
1652                 case VXGE_HW_EVENT_CRITICAL_ERR:
1653                         netif_tx_stop_all_queues(vdev->ndev);
1654                         vxge_debug_init(VXGE_ERR,
1655                                 "fatal: %s: Disabling device due to"
1656                                 "serious error",
1657                                 vdev->ndev->name);
1658                         /* SOP or device reset required */
1659                         /* This event is not currently used */
1660                         ret = -EPERM;
1661                         goto out;
1662                 case VXGE_HW_EVENT_SERR:
1663                         netif_tx_stop_all_queues(vdev->ndev);
1664                         vxge_debug_init(VXGE_ERR,
1665                                 "fatal: %s: Disabling device due to"
1666                                 "serious error",
1667                                 vdev->ndev->name);
1668                         ret = -EPERM;
1669                         goto out;
1670                 case VXGE_HW_EVENT_SRPCIM_SERR:
1671                 case VXGE_HW_EVENT_MRPCIM_SERR:
1672                         ret = -EPERM;
1673                         goto out;
1674                 case VXGE_HW_EVENT_SLOT_FREEZE:
1675                         netif_tx_stop_all_queues(vdev->ndev);
1676                         vxge_debug_init(VXGE_ERR,
1677                                 "fatal: %s: Disabling device due to"
1678                                 "slot freeze",
1679                                 vdev->ndev->name);
1680                         ret = -EPERM;
1681                         goto out;
1682                 default:
1683                         break;
1684
1685                 }
1686         }
1687
1688         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1689                 netif_tx_stop_all_queues(vdev->ndev);
1690
1691         if (event == VXGE_LL_FULL_RESET) {
1692                 status = vxge_reset_all_vpaths(vdev);
1693                 if (status != VXGE_HW_OK) {
1694                         vxge_debug_init(VXGE_ERR,
1695                                 "fatal: %s: can not reset vpaths",
1696                                 vdev->ndev->name);
1697                         ret = -EPERM;
1698                         goto out;
1699                 }
1700         }
1701
1702         if (event == VXGE_LL_COMPL_RESET) {
1703                 for (i = 0; i < vdev->no_of_vpath; i++)
1704                         if (vdev->vpaths[i].handle) {
1705                                 if (vxge_hw_vpath_recover_from_reset(
1706                                         vdev->vpaths[i].handle)
1707                                                 != VXGE_HW_OK) {
1708                                         vxge_debug_init(VXGE_ERR,
1709                                                 "vxge_hw_vpath_recover_"
1710                                                 "from_reset failed for vpath: "
1711                                                 "%d", i);
1712                                         ret = -EPERM;
1713                                         goto out;
1714                                 }
1715                                 } else {
1716                                         vxge_debug_init(VXGE_ERR,
1717                                         "vxge_hw_vpath_reset failed for "
1718                                                 "vpath:%d", i);
1719                                         ret = -EPERM;
1720                                         goto out;
1721                                 }
1722         }
1723
1724         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1725                 /* Reprogram the DA table with populated mac addresses */
1726                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1727                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1728                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1729                 }
1730
1731                 /* enable vpath interrupts */
1732                 for (i = 0; i < vdev->no_of_vpath; i++)
1733                         vxge_vpath_intr_enable(vdev, i);
1734
1735                 vxge_hw_device_intr_enable(vdev->devh);
1736
1737                 smp_wmb();
1738
1739                 /* Indicate card up */
1740                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1741
1742                 /* Get the traffic to flow through the vpaths */
1743                 for (i = 0; i < vdev->no_of_vpath; i++) {
1744                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1745                         smp_wmb();
1746                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1747                 }
1748
1749                 netif_tx_wake_all_queues(vdev->ndev);
1750         }
1751
1752 out:
1753         vxge_debug_entryexit(VXGE_TRACE,
1754                 "%s:%d  Exiting...", __func__, __LINE__);
1755
1756         /* Indicate reset done */
1757         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1758                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1759         return ret;
1760 }
1761
1762 /*
1763  * vxge_reset
1764  * @vdev: pointer to ll device
1765  *
1766  * driver may reset the chip on events of serr, eccerr, etc
1767  */
1768 static int vxge_reset(struct vxgedev *vdev)
1769 {
1770         return do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1771 }
1772
1773 /**
1774  * vxge_poll - Receive handler when Receive Polling is used.
1775  * @dev: pointer to the device structure.
1776  * @budget: Number of packets budgeted to be processed in this iteration.
1777  *
1778  * This function comes into picture only if Receive side is being handled
1779  * through polling (called NAPI in linux). It mostly does what the normal
1780  * Rx interrupt handler does in terms of descriptor and packet processing
1781  * but not in an interrupt context. Also it will process a specified number
1782  * of packets at most in one iteration. This value is passed down by the
1783  * kernel as the function argument 'budget'.
1784  */
1785 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1786 {
1787         struct vxge_ring *ring =
1788                 container_of(napi, struct vxge_ring, napi);
1789         int budget_org = budget;
1790         ring->budget = budget;
1791
1792         vxge_hw_vpath_poll_rx(ring->handle);
1793
1794         if (ring->pkts_processed < budget_org) {
1795                 napi_complete(napi);
1796                 /* Re enable the Rx interrupts for the vpath */
1797                 vxge_hw_channel_msix_unmask(
1798                                 (struct __vxge_hw_channel *)ring->handle,
1799                                 ring->rx_vector_no);
1800         }
1801
1802         return ring->pkts_processed;
1803 }
1804
1805 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1806 {
1807         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1808         int pkts_processed = 0;
1809         int i;
1810         int budget_org = budget;
1811         struct vxge_ring *ring;
1812
1813         struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1814
1815         for (i = 0; i < vdev->no_of_vpath; i++) {
1816                 ring = &vdev->vpaths[i].ring;
1817                 ring->budget = budget;
1818                 vxge_hw_vpath_poll_rx(ring->handle);
1819                 pkts_processed += ring->pkts_processed;
1820                 budget -= ring->pkts_processed;
1821                 if (budget <= 0)
1822                         break;
1823         }
1824
1825         VXGE_COMPLETE_ALL_TX(vdev);
1826
1827         if (pkts_processed < budget_org) {
1828                 napi_complete(napi);
1829                 /* Re enable the Rx interrupts for the ring */
1830                 vxge_hw_device_unmask_all(hldev);
1831                 vxge_hw_device_flush_io(hldev);
1832         }
1833
1834         return pkts_processed;
1835 }
1836
1837 #ifdef CONFIG_NET_POLL_CONTROLLER
1838 /**
1839  * vxge_netpoll - netpoll event handler entry point
1840  * @dev : pointer to the device structure.
1841  * Description:
1842  *      This function will be called by upper layer to check for events on the
1843  * interface in situations where interrupts are disabled. It is used for
1844  * specific in-kernel networking tasks, such as remote consoles and kernel
1845  * debugging over the network (example netdump in RedHat).
1846  */
1847 static void vxge_netpoll(struct net_device *dev)
1848 {
1849         struct __vxge_hw_device *hldev;
1850         struct vxgedev *vdev;
1851
1852         vdev = netdev_priv(dev);
1853         hldev = pci_get_drvdata(vdev->pdev);
1854
1855         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1856
1857         if (pci_channel_offline(vdev->pdev))
1858                 return;
1859
1860         disable_irq(dev->irq);
1861         vxge_hw_device_clear_tx_rx(hldev);
1862
1863         vxge_hw_device_clear_tx_rx(hldev);
1864         VXGE_COMPLETE_ALL_RX(vdev);
1865         VXGE_COMPLETE_ALL_TX(vdev);
1866
1867         enable_irq(dev->irq);
1868
1869         vxge_debug_entryexit(VXGE_TRACE,
1870                 "%s:%d  Exiting...", __func__, __LINE__);
1871 }
1872 #endif
1873
1874 /* RTH configuration */
1875 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1876 {
1877         enum vxge_hw_status status = VXGE_HW_OK;
1878         struct vxge_hw_rth_hash_types hash_types;
1879         u8 itable[256] = {0}; /* indirection table */
1880         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1881         int index;
1882
1883         /*
1884          * Filling
1885          *      - itable with bucket numbers
1886          *      - mtable with bucket-to-vpath mapping
1887          */
1888         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1889                 itable[index] = index;
1890                 mtable[index] = index % vdev->no_of_vpath;
1891         }
1892
1893         /* set indirection table, bucket-to-vpath mapping */
1894         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1895                                                 vdev->no_of_vpath,
1896                                                 mtable, itable,
1897                                                 vdev->config.rth_bkt_sz);
1898         if (status != VXGE_HW_OK) {
1899                 vxge_debug_init(VXGE_ERR,
1900                         "RTH indirection table configuration failed "
1901                         "for vpath:%d", vdev->vpaths[0].device_id);
1902                 return status;
1903         }
1904
1905         /* Fill RTH hash types */
1906         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1907         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1908         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1909         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1910         hash_types.hash_type_tcpipv6ex_en =
1911                                         vdev->config.rth_hash_type_tcpipv6ex;
1912         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1913
1914         /*
1915          * Because the itable_set() method uses the active_table field
1916          * for the target virtual path the RTH config should be updated
1917          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1918          * when steering frames.
1919          */
1920          for (index = 0; index < vdev->no_of_vpath; index++) {
1921                 status = vxge_hw_vpath_rts_rth_set(
1922                                 vdev->vpaths[index].handle,
1923                                 vdev->config.rth_algorithm,
1924                                 &hash_types,
1925                                 vdev->config.rth_bkt_sz);
1926                  if (status != VXGE_HW_OK) {
1927                         vxge_debug_init(VXGE_ERR,
1928                                 "RTH configuration failed for vpath:%d",
1929                                 vdev->vpaths[index].device_id);
1930                         return status;
1931                  }
1932          }
1933
1934         return status;
1935 }
1936
1937 /* reset vpaths */
1938 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1939 {
1940         enum vxge_hw_status status = VXGE_HW_OK;
1941         struct vxge_vpath *vpath;
1942         int i;
1943
1944         for (i = 0; i < vdev->no_of_vpath; i++) {
1945                 vpath = &vdev->vpaths[i];
1946                 if (vpath->handle) {
1947                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1948                                 if (is_vxge_card_up(vdev) &&
1949                                         vxge_hw_vpath_recover_from_reset(
1950                                                 vpath->handle) != VXGE_HW_OK) {
1951                                         vxge_debug_init(VXGE_ERR,
1952                                                 "vxge_hw_vpath_recover_"
1953                                                 "from_reset failed for vpath: "
1954                                                 "%d", i);
1955                                         return status;
1956                                 }
1957                         } else {
1958                                 vxge_debug_init(VXGE_ERR,
1959                                         "vxge_hw_vpath_reset failed for "
1960                                         "vpath:%d", i);
1961                                         return status;
1962                         }
1963                 }
1964         }
1965
1966         return status;
1967 }
1968
1969 /* close vpaths */
1970 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
1971 {
1972         struct vxge_vpath *vpath;
1973         int i;
1974
1975         for (i = index; i < vdev->no_of_vpath; i++) {
1976                 vpath = &vdev->vpaths[i];
1977
1978                 if (vpath->handle && vpath->is_open) {
1979                         vxge_hw_vpath_close(vpath->handle);
1980                         vdev->stats.vpaths_open--;
1981                 }
1982                 vpath->is_open = 0;
1983                 vpath->handle = NULL;
1984         }
1985 }
1986
1987 /* open vpaths */
1988 static int vxge_open_vpaths(struct vxgedev *vdev)
1989 {
1990         struct vxge_hw_vpath_attr attr;
1991         enum vxge_hw_status status;
1992         struct vxge_vpath *vpath;
1993         u32 vp_id = 0;
1994         int i;
1995
1996         for (i = 0; i < vdev->no_of_vpath; i++) {
1997                 vpath = &vdev->vpaths[i];
1998                 vxge_assert(vpath->is_configured);
1999
2000                 if (!vdev->titan1) {
2001                         struct vxge_hw_vp_config *vcfg;
2002                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2003
2004                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2005                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2006                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2007                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2008                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2009                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2010                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2011                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2012                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2013                 }
2014
2015                 attr.vp_id = vpath->device_id;
2016                 attr.fifo_attr.callback = vxge_xmit_compl;
2017                 attr.fifo_attr.txdl_term = vxge_tx_term;
2018                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2019                 attr.fifo_attr.userdata = &vpath->fifo;
2020
2021                 attr.ring_attr.callback = vxge_rx_1b_compl;
2022                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2023                 attr.ring_attr.rxd_term = vxge_rx_term;
2024                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2025                 attr.ring_attr.userdata = &vpath->ring;
2026
2027                 vpath->ring.ndev = vdev->ndev;
2028                 vpath->ring.pdev = vdev->pdev;
2029
2030                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2031                 if (status == VXGE_HW_OK) {
2032                         vpath->fifo.handle =
2033                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2034                         vpath->ring.handle =
2035                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2036                         vpath->fifo.tx_steering_type =
2037                                 vdev->config.tx_steering_type;
2038                         vpath->fifo.ndev = vdev->ndev;
2039                         vpath->fifo.pdev = vdev->pdev;
2040                         if (vdev->config.tx_steering_type)
2041                                 vpath->fifo.txq =
2042                                         netdev_get_tx_queue(vdev->ndev, i);
2043                         else
2044                                 vpath->fifo.txq =
2045                                         netdev_get_tx_queue(vdev->ndev, 0);
2046                         vpath->fifo.indicate_max_pkts =
2047                                 vdev->config.fifo_indicate_max_pkts;
2048                         vpath->ring.rx_vector_no = 0;
2049                         vpath->ring.rx_csum = vdev->rx_csum;
2050                         vpath->ring.rx_hwts = vdev->rx_hwts;
2051                         vpath->is_open = 1;
2052                         vdev->vp_handles[i] = vpath->handle;
2053                         vpath->ring.gro_enable = vdev->config.gro_enable;
2054                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2055                         vdev->stats.vpaths_open++;
2056                 } else {
2057                         vdev->stats.vpath_open_fail++;
2058                         vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2059                                         "open with status: %d",
2060                                         vdev->ndev->name, vpath->device_id,
2061                                         status);
2062                         vxge_close_vpaths(vdev, 0);
2063                         return -EPERM;
2064                 }
2065
2066                 vp_id = vpath->handle->vpath->vp_id;
2067                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2068         }
2069
2070         return VXGE_HW_OK;
2071 }
2072
2073 /*
2074  *  vxge_isr_napi
2075  *  @irq: the irq of the device.
2076  *  @dev_id: a void pointer to the hldev structure of the Titan device
2077  *  @ptregs: pointer to the registers pushed on the stack.
2078  *
2079  *  This function is the ISR handler of the device when napi is enabled. It
2080  *  identifies the reason for the interrupt and calls the relevant service
2081  *  routines.
2082  */
2083 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2084 {
2085         struct net_device *dev;
2086         struct __vxge_hw_device *hldev;
2087         u64 reason;
2088         enum vxge_hw_status status;
2089         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2090
2091         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2092
2093         dev = vdev->ndev;
2094         hldev = pci_get_drvdata(vdev->pdev);
2095
2096         if (pci_channel_offline(vdev->pdev))
2097                 return IRQ_NONE;
2098
2099         if (unlikely(!is_vxge_card_up(vdev)))
2100                 return IRQ_HANDLED;
2101
2102         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2103         if (status == VXGE_HW_OK) {
2104                 vxge_hw_device_mask_all(hldev);
2105
2106                 if (reason &
2107                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2108                         vdev->vpaths_deployed >>
2109                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2110
2111                         vxge_hw_device_clear_tx_rx(hldev);
2112                         napi_schedule(&vdev->napi);
2113                         vxge_debug_intr(VXGE_TRACE,
2114                                 "%s:%d  Exiting...", __func__, __LINE__);
2115                         return IRQ_HANDLED;
2116                 } else
2117                         vxge_hw_device_unmask_all(hldev);
2118         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2119                 (status == VXGE_HW_ERR_CRITICAL) ||
2120                 (status == VXGE_HW_ERR_FIFO))) {
2121                 vxge_hw_device_mask_all(hldev);
2122                 vxge_hw_device_flush_io(hldev);
2123                 return IRQ_HANDLED;
2124         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2125                 return IRQ_HANDLED;
2126
2127         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2128         return IRQ_NONE;
2129 }
2130
2131 #ifdef CONFIG_PCI_MSI
2132
2133 static irqreturn_t
2134 vxge_tx_msix_handle(int irq, void *dev_id)
2135 {
2136         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2137
2138         VXGE_COMPLETE_VPATH_TX(fifo);
2139
2140         return IRQ_HANDLED;
2141 }
2142
2143 static irqreturn_t
2144 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2145 {
2146         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2147
2148         /* MSIX_IDX for Rx is 1 */
2149         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2150                                         ring->rx_vector_no);
2151
2152         napi_schedule(&ring->napi);
2153         return IRQ_HANDLED;
2154 }
2155
2156 static irqreturn_t
2157 vxge_alarm_msix_handle(int irq, void *dev_id)
2158 {
2159         int i;
2160         enum vxge_hw_status status;
2161         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2162         struct vxgedev *vdev = vpath->vdev;
2163         int msix_id = (vpath->handle->vpath->vp_id *
2164                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2165
2166         for (i = 0; i < vdev->no_of_vpath; i++) {
2167                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2168
2169                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2170                         vdev->exec_mode);
2171                 if (status == VXGE_HW_OK) {
2172
2173                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2174                                         msix_id);
2175                         continue;
2176                 }
2177                 vxge_debug_intr(VXGE_ERR,
2178                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2179                         VXGE_DRIVER_NAME, status);
2180         }
2181         return IRQ_HANDLED;
2182 }
2183
2184 static int vxge_alloc_msix(struct vxgedev *vdev)
2185 {
2186         int j, i, ret = 0;
2187         int msix_intr_vect = 0, temp;
2188         vdev->intr_cnt = 0;
2189
2190 start:
2191         /* Tx/Rx MSIX Vectors count */
2192         vdev->intr_cnt = vdev->no_of_vpath * 2;
2193
2194         /* Alarm MSIX Vectors count */
2195         vdev->intr_cnt++;
2196
2197         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2198                                 GFP_KERNEL);
2199         if (!vdev->entries) {
2200                 vxge_debug_init(VXGE_ERR,
2201                         "%s: memory allocation failed",
2202                         VXGE_DRIVER_NAME);
2203                 ret = -ENOMEM;
2204                 goto alloc_entries_failed;
2205         }
2206
2207         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2208                                      sizeof(struct vxge_msix_entry),
2209                                      GFP_KERNEL);
2210         if (!vdev->vxge_entries) {
2211                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2212                         VXGE_DRIVER_NAME);
2213                 ret = -ENOMEM;
2214                 goto alloc_vxge_entries_failed;
2215         }
2216
2217         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2218
2219                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2220
2221                 /* Initialize the fifo vector */
2222                 vdev->entries[j].entry = msix_intr_vect;
2223                 vdev->vxge_entries[j].entry = msix_intr_vect;
2224                 vdev->vxge_entries[j].in_use = 0;
2225                 j++;
2226
2227                 /* Initialize the ring vector */
2228                 vdev->entries[j].entry = msix_intr_vect + 1;
2229                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2230                 vdev->vxge_entries[j].in_use = 0;
2231                 j++;
2232         }
2233
2234         /* Initialize the alarm vector */
2235         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2236         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2237         vdev->vxge_entries[j].in_use = 0;
2238
2239         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2240         if (ret > 0) {
2241                 vxge_debug_init(VXGE_ERR,
2242                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2243                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2244                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2245                         ret = -ENODEV;
2246                         goto enable_msix_failed;
2247                 }
2248
2249                 kfree(vdev->entries);
2250                 kfree(vdev->vxge_entries);
2251                 vdev->entries = NULL;
2252                 vdev->vxge_entries = NULL;
2253                 /* Try with less no of vector by reducing no of vpaths count */
2254                 temp = (ret - 1)/2;
2255                 vxge_close_vpaths(vdev, temp);
2256                 vdev->no_of_vpath = temp;
2257                 goto start;
2258         } else if (ret < 0) {
2259                 ret = -ENODEV;
2260                 goto enable_msix_failed;
2261         }
2262         return 0;
2263
2264 enable_msix_failed:
2265         kfree(vdev->vxge_entries);
2266 alloc_vxge_entries_failed:
2267         kfree(vdev->entries);
2268 alloc_entries_failed:
2269         return ret;
2270 }
2271
2272 static int vxge_enable_msix(struct vxgedev *vdev)
2273 {
2274
2275         int i, ret = 0;
2276         /* 0 - Tx, 1 - Rx  */
2277         int tim_msix_id[4] = {0, 1, 0, 0};
2278
2279         vdev->intr_cnt = 0;
2280
2281         /* allocate msix vectors */
2282         ret = vxge_alloc_msix(vdev);
2283         if (!ret) {
2284                 for (i = 0; i < vdev->no_of_vpath; i++) {
2285                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2286
2287                         /* If fifo or ring are not enabled, the MSIX vector for
2288                          * it should be set to 0.
2289                          */
2290                         vpath->ring.rx_vector_no = (vpath->device_id *
2291                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2292
2293                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2294                                                VXGE_ALARM_MSIX_ID);
2295                 }
2296         }
2297
2298         return ret;
2299 }
2300
2301 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2302 {
2303         int intr_cnt;
2304
2305         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2306                 intr_cnt++) {
2307                 if (vdev->vxge_entries[intr_cnt].in_use) {
2308                         synchronize_irq(vdev->entries[intr_cnt].vector);
2309                         free_irq(vdev->entries[intr_cnt].vector,
2310                                 vdev->vxge_entries[intr_cnt].arg);
2311                         vdev->vxge_entries[intr_cnt].in_use = 0;
2312                 }
2313         }
2314
2315         kfree(vdev->entries);
2316         kfree(vdev->vxge_entries);
2317         vdev->entries = NULL;
2318         vdev->vxge_entries = NULL;
2319
2320         if (vdev->config.intr_type == MSI_X)
2321                 pci_disable_msix(vdev->pdev);
2322 }
2323 #endif
2324
2325 static void vxge_rem_isr(struct vxgedev *vdev)
2326 {
2327         struct __vxge_hw_device *hldev;
2328         hldev = pci_get_drvdata(vdev->pdev);
2329
2330 #ifdef CONFIG_PCI_MSI
2331         if (vdev->config.intr_type == MSI_X) {
2332                 vxge_rem_msix_isr(vdev);
2333         } else
2334 #endif
2335         if (vdev->config.intr_type == INTA) {
2336                         synchronize_irq(vdev->pdev->irq);
2337                         free_irq(vdev->pdev->irq, vdev);
2338         }
2339 }
2340
2341 static int vxge_add_isr(struct vxgedev *vdev)
2342 {
2343         int ret = 0;
2344 #ifdef CONFIG_PCI_MSI
2345         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2346         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2347
2348         if (vdev->config.intr_type == MSI_X)
2349                 ret = vxge_enable_msix(vdev);
2350
2351         if (ret) {
2352                 vxge_debug_init(VXGE_ERR,
2353                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2354                 vxge_debug_init(VXGE_ERR,
2355                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2356                 vdev->config.intr_type = INTA;
2357         }
2358
2359         if (vdev->config.intr_type == MSI_X) {
2360                 for (intr_idx = 0;
2361                      intr_idx < (vdev->no_of_vpath *
2362                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2363
2364                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2365                         irq_req = 0;
2366
2367                         switch (msix_idx) {
2368                         case 0:
2369                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2370                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2371                                         vdev->ndev->name,
2372                                         vdev->entries[intr_cnt].entry,
2373                                         pci_fun, vp_idx);
2374                                 ret = request_irq(
2375                                     vdev->entries[intr_cnt].vector,
2376                                         vxge_tx_msix_handle, 0,
2377                                         vdev->desc[intr_cnt],
2378                                         &vdev->vpaths[vp_idx].fifo);
2379                                         vdev->vxge_entries[intr_cnt].arg =
2380                                                 &vdev->vpaths[vp_idx].fifo;
2381                                 irq_req = 1;
2382                                 break;
2383                         case 1:
2384                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2385                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2386                                         vdev->ndev->name,
2387                                         vdev->entries[intr_cnt].entry,
2388                                         pci_fun, vp_idx);
2389                                 ret = request_irq(
2390                                     vdev->entries[intr_cnt].vector,
2391                                         vxge_rx_msix_napi_handle,
2392                                         0,
2393                                         vdev->desc[intr_cnt],
2394                                         &vdev->vpaths[vp_idx].ring);
2395                                         vdev->vxge_entries[intr_cnt].arg =
2396                                                 &vdev->vpaths[vp_idx].ring;
2397                                 irq_req = 1;
2398                                 break;
2399                         }
2400
2401                         if (ret) {
2402                                 vxge_debug_init(VXGE_ERR,
2403                                         "%s: MSIX - %d  Registration failed",
2404                                         vdev->ndev->name, intr_cnt);
2405                                 vxge_rem_msix_isr(vdev);
2406                                 vdev->config.intr_type = INTA;
2407                                 vxge_debug_init(VXGE_ERR,
2408                                         "%s: Defaulting to INTA"
2409                                         , vdev->ndev->name);
2410                                         goto INTA_MODE;
2411                         }
2412
2413                         if (irq_req) {
2414                                 /* We requested for this msix interrupt */
2415                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2416                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2417                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2418                                 vxge_hw_vpath_msix_unmask(
2419                                         vdev->vpaths[vp_idx].handle,
2420                                         msix_idx);
2421                                 intr_cnt++;
2422                         }
2423
2424                         /* Point to next vpath handler */
2425                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2426                             (vp_idx < (vdev->no_of_vpath - 1)))
2427                                 vp_idx++;
2428                 }
2429
2430                 intr_cnt = vdev->no_of_vpath * 2;
2431                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2432                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2433                         vdev->ndev->name,
2434                         vdev->entries[intr_cnt].entry,
2435                         pci_fun);
2436                 /* For Alarm interrupts */
2437                 ret = request_irq(vdev->entries[intr_cnt].vector,
2438                                         vxge_alarm_msix_handle, 0,
2439                                         vdev->desc[intr_cnt],
2440                                         &vdev->vpaths[0]);
2441                 if (ret) {
2442                         vxge_debug_init(VXGE_ERR,
2443                                 "%s: MSIX - %d Registration failed",
2444                                 vdev->ndev->name, intr_cnt);
2445                         vxge_rem_msix_isr(vdev);
2446                         vdev->config.intr_type = INTA;
2447                         vxge_debug_init(VXGE_ERR,
2448                                 "%s: Defaulting to INTA",
2449                                 vdev->ndev->name);
2450                                 goto INTA_MODE;
2451                 }
2452
2453                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2454                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2455                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2456                                         msix_idx);
2457                 vdev->vxge_entries[intr_cnt].in_use = 1;
2458                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2459         }
2460 INTA_MODE:
2461 #endif
2462
2463         if (vdev->config.intr_type == INTA) {
2464                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2465                         "%s:vxge:INTA", vdev->ndev->name);
2466                 vxge_hw_device_set_intr_type(vdev->devh,
2467                         VXGE_HW_INTR_MODE_IRQLINE);
2468                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2469                         vdev->vpaths[0].device_id);
2470                 ret = request_irq((int) vdev->pdev->irq,
2471                         vxge_isr_napi,
2472                         IRQF_SHARED, vdev->desc[0], vdev);
2473                 if (ret) {
2474                         vxge_debug_init(VXGE_ERR,
2475                                 "%s %s-%d: ISR registration failed",
2476                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2477                         return -ENODEV;
2478                 }
2479                 vxge_debug_init(VXGE_TRACE,
2480                         "new %s-%d line allocated",
2481                         "IRQ", vdev->pdev->irq);
2482         }
2483
2484         return VXGE_HW_OK;
2485 }
2486
2487 static void vxge_poll_vp_reset(unsigned long data)
2488 {
2489         struct vxgedev *vdev = (struct vxgedev *)data;
2490         int i, j = 0;
2491
2492         for (i = 0; i < vdev->no_of_vpath; i++) {
2493                 if (test_bit(i, &vdev->vp_reset)) {
2494                         vxge_reset_vpath(vdev, i);
2495                         j++;
2496                 }
2497         }
2498         if (j && (vdev->config.intr_type != MSI_X)) {
2499                 vxge_hw_device_unmask_all(vdev->devh);
2500                 vxge_hw_device_flush_io(vdev->devh);
2501         }
2502
2503         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2504 }
2505
2506 static void vxge_poll_vp_lockup(unsigned long data)
2507 {
2508         struct vxgedev *vdev = (struct vxgedev *)data;
2509         enum vxge_hw_status status = VXGE_HW_OK;
2510         struct vxge_vpath *vpath;
2511         struct vxge_ring *ring;
2512         int i;
2513
2514         for (i = 0; i < vdev->no_of_vpath; i++) {
2515                 ring = &vdev->vpaths[i].ring;
2516                 /* Did this vpath received any packets */
2517                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2518                         status = vxge_hw_vpath_check_leak(ring->handle);
2519
2520                         /* Did it received any packets last time */
2521                         if ((VXGE_HW_FAIL == status) &&
2522                                 (VXGE_HW_FAIL == ring->last_status)) {
2523
2524                                 /* schedule vpath reset */
2525                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2526                                         vpath = &vdev->vpaths[i];
2527
2528                                         /* disable interrupts for this vpath */
2529                                         vxge_vpath_intr_disable(vdev, i);
2530
2531                                         /* stop the queue for this vpath */
2532                                         netif_tx_stop_queue(vpath->fifo.txq);
2533                                         continue;
2534                                 }
2535                         }
2536                 }
2537                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2538                 ring->last_status = status;
2539         }
2540
2541         /* Check every 1 milli second */
2542         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2543 }
2544
2545 /**
2546  * vxge_open
2547  * @dev: pointer to the device structure.
2548  *
2549  * This function is the open entry point of the driver. It mainly calls a
2550  * function to allocate Rx buffers and inserts them into the buffer
2551  * descriptors and then enables the Rx part of the NIC.
2552  * Return value: '0' on success and an appropriate (-)ve integer as
2553  * defined in errno.h file on failure.
2554  */
2555 static int vxge_open(struct net_device *dev)
2556 {
2557         enum vxge_hw_status status;
2558         struct vxgedev *vdev;
2559         struct __vxge_hw_device *hldev;
2560         struct vxge_vpath *vpath;
2561         int ret = 0;
2562         int i;
2563         u64 val64, function_mode;
2564
2565         vxge_debug_entryexit(VXGE_TRACE,
2566                 "%s: %s:%d", dev->name, __func__, __LINE__);
2567
2568         vdev = netdev_priv(dev);
2569         hldev = pci_get_drvdata(vdev->pdev);
2570         function_mode = vdev->config.device_hw_info.function_mode;
2571
2572         /* make sure you have link off by default every time Nic is
2573          * initialized */
2574         netif_carrier_off(dev);
2575
2576         /* Open VPATHs */
2577         status = vxge_open_vpaths(vdev);
2578         if (status != VXGE_HW_OK) {
2579                 vxge_debug_init(VXGE_ERR,
2580                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2581                 ret = -EPERM;
2582                 goto out0;
2583         }
2584
2585         vdev->mtu = dev->mtu;
2586
2587         status = vxge_add_isr(vdev);
2588         if (status != VXGE_HW_OK) {
2589                 vxge_debug_init(VXGE_ERR,
2590                         "%s: fatal: ISR add failed", dev->name);
2591                 ret = -EPERM;
2592                 goto out1;
2593         }
2594
2595         if (vdev->config.intr_type != MSI_X) {
2596                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2597                         vdev->config.napi_weight);
2598                 napi_enable(&vdev->napi);
2599                 for (i = 0; i < vdev->no_of_vpath; i++) {
2600                         vpath = &vdev->vpaths[i];
2601                         vpath->ring.napi_p = &vdev->napi;
2602                 }
2603         } else {
2604                 for (i = 0; i < vdev->no_of_vpath; i++) {
2605                         vpath = &vdev->vpaths[i];
2606                         netif_napi_add(dev, &vpath->ring.napi,
2607                             vxge_poll_msix, vdev->config.napi_weight);
2608                         napi_enable(&vpath->ring.napi);
2609                         vpath->ring.napi_p = &vpath->ring.napi;
2610                 }
2611         }
2612
2613         /* configure RTH */
2614         if (vdev->config.rth_steering) {
2615                 status = vxge_rth_configure(vdev);
2616                 if (status != VXGE_HW_OK) {
2617                         vxge_debug_init(VXGE_ERR,
2618                                 "%s: fatal: RTH configuration failed",
2619                                 dev->name);
2620                         ret = -EPERM;
2621                         goto out2;
2622                 }
2623         }
2624         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2625                hldev->config.rth_en ? "enabled" : "disabled");
2626
2627         for (i = 0; i < vdev->no_of_vpath; i++) {
2628                 vpath = &vdev->vpaths[i];
2629
2630                 /* set initial mtu before enabling the device */
2631                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2632                 if (status != VXGE_HW_OK) {
2633                         vxge_debug_init(VXGE_ERR,
2634                                 "%s: fatal: can not set new MTU", dev->name);
2635                         ret = -EPERM;
2636                         goto out2;
2637                 }
2638         }
2639
2640         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2641         vxge_debug_init(vdev->level_trace,
2642                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2643         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2644
2645         /* Restore the DA, VID table and also multicast and promiscuous mode
2646          * states
2647          */
2648         if (vdev->all_multi_flg) {
2649                 for (i = 0; i < vdev->no_of_vpath; i++) {
2650                         vpath = &vdev->vpaths[i];
2651                         vxge_restore_vpath_mac_addr(vpath);
2652                         vxge_restore_vpath_vid_table(vpath);
2653
2654                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2655                         if (status != VXGE_HW_OK)
2656                                 vxge_debug_init(VXGE_ERR,
2657                                         "%s:%d Enabling multicast failed",
2658                                         __func__, __LINE__);
2659                 }
2660         }
2661
2662         /* Enable vpath to sniff all unicast/multicast traffic that not
2663          * addressed to them. We allow promiscous mode for PF only
2664          */
2665
2666         val64 = 0;
2667         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2668                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2669
2670         vxge_hw_mgmt_reg_write(vdev->devh,
2671                 vxge_hw_mgmt_reg_type_mrpcim,
2672                 0,
2673                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2674                         rxmac_authorize_all_addr),
2675                 val64);
2676
2677         vxge_hw_mgmt_reg_write(vdev->devh,
2678                 vxge_hw_mgmt_reg_type_mrpcim,
2679                 0,
2680                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2681                         rxmac_authorize_all_vid),
2682                 val64);
2683
2684         vxge_set_multicast(dev);
2685
2686         /* Enabling Bcast and mcast for all vpath */
2687         for (i = 0; i < vdev->no_of_vpath; i++) {
2688                 vpath = &vdev->vpaths[i];
2689                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2690                 if (status != VXGE_HW_OK)
2691                         vxge_debug_init(VXGE_ERR,
2692                                 "%s : Can not enable bcast for vpath "
2693                                 "id %d", dev->name, i);
2694                 if (vdev->config.addr_learn_en) {
2695                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2696                         if (status != VXGE_HW_OK)
2697                                 vxge_debug_init(VXGE_ERR,
2698                                         "%s : Can not enable mcast for vpath "
2699                                         "id %d", dev->name, i);
2700                 }
2701         }
2702
2703         vxge_hw_device_setpause_data(vdev->devh, 0,
2704                 vdev->config.tx_pause_enable,
2705                 vdev->config.rx_pause_enable);
2706
2707         if (vdev->vp_reset_timer.function == NULL)
2708                 vxge_os_timer(vdev->vp_reset_timer,
2709                         vxge_poll_vp_reset, vdev, (HZ/2));
2710
2711         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2712         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2713                 vxge_os_timer(vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev,
2714                               HZ / 2);
2715
2716         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2717
2718         smp_wmb();
2719
2720         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2721                 netif_carrier_on(vdev->ndev);
2722                 netdev_notice(vdev->ndev, "Link Up\n");
2723                 vdev->stats.link_up++;
2724         }
2725
2726         vxge_hw_device_intr_enable(vdev->devh);
2727
2728         smp_wmb();
2729
2730         for (i = 0; i < vdev->no_of_vpath; i++) {
2731                 vpath = &vdev->vpaths[i];
2732
2733                 vxge_hw_vpath_enable(vpath->handle);
2734                 smp_wmb();
2735                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2736         }
2737
2738         netif_tx_start_all_queues(vdev->ndev);
2739         goto out0;
2740
2741 out2:
2742         vxge_rem_isr(vdev);
2743
2744         /* Disable napi */
2745         if (vdev->config.intr_type != MSI_X)
2746                 napi_disable(&vdev->napi);
2747         else {
2748                 for (i = 0; i < vdev->no_of_vpath; i++)
2749                         napi_disable(&vdev->vpaths[i].ring.napi);
2750         }
2751
2752 out1:
2753         vxge_close_vpaths(vdev, 0);
2754 out0:
2755         vxge_debug_entryexit(VXGE_TRACE,
2756                                 "%s: %s:%d  Exiting...",
2757                                 dev->name, __func__, __LINE__);
2758         return ret;
2759 }
2760
2761 /* Loop throught the mac address list and delete all the entries */
2762 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2763 {
2764
2765         struct list_head *entry, *next;
2766         if (list_empty(&vpath->mac_addr_list))
2767                 return;
2768
2769         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2770                 list_del(entry);
2771                 kfree((struct vxge_mac_addrs *)entry);
2772         }
2773 }
2774
2775 static void vxge_napi_del_all(struct vxgedev *vdev)
2776 {
2777         int i;
2778         if (vdev->config.intr_type != MSI_X)
2779                 netif_napi_del(&vdev->napi);
2780         else {
2781                 for (i = 0; i < vdev->no_of_vpath; i++)
2782                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2783         }
2784 }
2785
2786 static int do_vxge_close(struct net_device *dev, int do_io)
2787 {
2788         enum vxge_hw_status status;
2789         struct vxgedev *vdev;
2790         struct __vxge_hw_device *hldev;
2791         int i;
2792         u64 val64, vpath_vector;
2793         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2794                 dev->name, __func__, __LINE__);
2795
2796         vdev = netdev_priv(dev);
2797         hldev = pci_get_drvdata(vdev->pdev);
2798
2799         if (unlikely(!is_vxge_card_up(vdev)))
2800                 return 0;
2801
2802         /* If vxge_handle_crit_err task is executing,
2803          * wait till it completes. */
2804         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2805                 msleep(50);
2806
2807         if (do_io) {
2808                 /* Put the vpath back in normal mode */
2809                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2810                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2811                                 vxge_hw_mgmt_reg_type_mrpcim,
2812                                 0,
2813                                 (ulong)offsetof(
2814                                         struct vxge_hw_mrpcim_reg,
2815                                         rts_mgr_cbasin_cfg),
2816                                 &val64);
2817                 if (status == VXGE_HW_OK) {
2818                         val64 &= ~vpath_vector;
2819                         status = vxge_hw_mgmt_reg_write(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                 }
2827
2828                 /* Remove the function 0 from promiscous mode */
2829                 vxge_hw_mgmt_reg_write(vdev->devh,
2830                         vxge_hw_mgmt_reg_type_mrpcim,
2831                         0,
2832                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2833                                 rxmac_authorize_all_addr),
2834                         0);
2835
2836                 vxge_hw_mgmt_reg_write(vdev->devh,
2837                         vxge_hw_mgmt_reg_type_mrpcim,
2838                         0,
2839                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2840                                 rxmac_authorize_all_vid),
2841                         0);
2842
2843                 smp_wmb();
2844         }
2845
2846         if (vdev->titan1)
2847                 del_timer_sync(&vdev->vp_lockup_timer);
2848
2849         del_timer_sync(&vdev->vp_reset_timer);
2850
2851         if (do_io)
2852                 vxge_hw_device_wait_receive_idle(hldev);
2853
2854         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2855
2856         /* Disable napi */
2857         if (vdev->config.intr_type != MSI_X)
2858                 napi_disable(&vdev->napi);
2859         else {
2860                 for (i = 0; i < vdev->no_of_vpath; i++)
2861                         napi_disable(&vdev->vpaths[i].ring.napi);
2862         }
2863
2864         netif_carrier_off(vdev->ndev);
2865         netdev_notice(vdev->ndev, "Link Down\n");
2866         netif_tx_stop_all_queues(vdev->ndev);
2867
2868         /* Note that at this point xmit() is stopped by upper layer */
2869         if (do_io)
2870                 vxge_hw_device_intr_disable(vdev->devh);
2871
2872         vxge_rem_isr(vdev);
2873
2874         vxge_napi_del_all(vdev);
2875
2876         if (do_io)
2877                 vxge_reset_all_vpaths(vdev);
2878
2879         vxge_close_vpaths(vdev, 0);
2880
2881         vxge_debug_entryexit(VXGE_TRACE,
2882                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2883
2884         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2885
2886         return 0;
2887 }
2888
2889 /**
2890  * vxge_close
2891  * @dev: device pointer.
2892  *
2893  * This is the stop entry point of the driver. It needs to undo exactly
2894  * whatever was done by the open entry point, thus it's usually referred to
2895  * as the close function.Among other things this function mainly stops the
2896  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2897  * Return value: '0' on success and an appropriate (-)ve integer as
2898  * defined in errno.h file on failure.
2899  */
2900 static int vxge_close(struct net_device *dev)
2901 {
2902         do_vxge_close(dev, 1);
2903         return 0;
2904 }
2905
2906 /**
2907  * vxge_change_mtu
2908  * @dev: net device pointer.
2909  * @new_mtu :the new MTU size for the device.
2910  *
2911  * A driver entry point to change MTU size for the device. Before changing
2912  * the MTU the device must be stopped.
2913  */
2914 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2915 {
2916         struct vxgedev *vdev = netdev_priv(dev);
2917
2918         vxge_debug_entryexit(vdev->level_trace,
2919                 "%s:%d", __func__, __LINE__);
2920         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2921                 vxge_debug_init(vdev->level_err,
2922                         "%s: mtu size is invalid", dev->name);
2923                 return -EPERM;
2924         }
2925
2926         /* check if device is down already */
2927         if (unlikely(!is_vxge_card_up(vdev))) {
2928                 /* just store new value, will use later on open() */
2929                 dev->mtu = new_mtu;
2930                 vxge_debug_init(vdev->level_err,
2931                         "%s", "device is down on MTU change");
2932                 return 0;
2933         }
2934
2935         vxge_debug_init(vdev->level_trace,
2936                 "trying to apply new MTU %d", new_mtu);
2937
2938         if (vxge_close(dev))
2939                 return -EIO;
2940
2941         dev->mtu = new_mtu;
2942         vdev->mtu = new_mtu;
2943
2944         if (vxge_open(dev))
2945                 return -EIO;
2946
2947         vxge_debug_init(vdev->level_trace,
2948                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2949
2950         vxge_debug_entryexit(vdev->level_trace,
2951                 "%s:%d  Exiting...", __func__, __LINE__);
2952
2953         return 0;
2954 }
2955
2956 /**
2957  * vxge_get_stats64
2958  * @dev: pointer to the device structure
2959  * @stats: pointer to struct rtnl_link_stats64
2960  *
2961  */
2962 static struct rtnl_link_stats64 *
2963 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
2964 {
2965         struct vxgedev *vdev = netdev_priv(dev);
2966         int k;
2967
2968         /* net_stats already zeroed by caller */
2969         for (k = 0; k < vdev->no_of_vpath; k++) {
2970                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
2971                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
2972                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
2973                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
2974                 net_stats->rx_dropped += vdev->vpaths[k].ring.stats.rx_dropped;
2975                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
2976                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
2977                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
2978         }
2979
2980         return net_stats;
2981 }
2982
2983 static enum vxge_hw_status vxge_timestamp_config(struct vxgedev *vdev,
2984                                                  int enable)
2985 {
2986         enum vxge_hw_status status;
2987         u64 val64;
2988
2989         /* Timestamp is passed to the driver via the FCS, therefore we
2990          * must disable the FCS stripping by the adapter.  Since this is
2991          * required for the driver to load (due to a hardware bug),
2992          * there is no need to do anything special here.
2993          */
2994         if (enable)
2995                 val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
2996                         VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
2997                         VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
2998         else
2999                 val64 = 0;
3000
3001         status = vxge_hw_mgmt_reg_write(vdev->devh,
3002                                         vxge_hw_mgmt_reg_type_mrpcim,
3003                                         0,
3004                                         offsetof(struct vxge_hw_mrpcim_reg,
3005                                                  xmac_timestamp),
3006                                         val64);
3007         vxge_hw_device_flush_io(vdev->devh);
3008         return status;
3009 }
3010
3011 static int vxge_hwtstamp_ioctl(struct vxgedev *vdev, void __user *data)
3012 {
3013         struct hwtstamp_config config;
3014         enum vxge_hw_status status;
3015         int i;
3016
3017         if (copy_from_user(&config, data, sizeof(config)))
3018                 return -EFAULT;
3019
3020         /* reserved for future extensions */
3021         if (config.flags)
3022                 return -EINVAL;
3023
3024         /* Transmit HW Timestamp not supported */
3025         switch (config.tx_type) {
3026         case HWTSTAMP_TX_OFF:
3027                 break;
3028         case HWTSTAMP_TX_ON:
3029         default:
3030                 return -ERANGE;
3031         }
3032
3033         switch (config.rx_filter) {
3034         case HWTSTAMP_FILTER_NONE:
3035                 status = vxge_timestamp_config(vdev, 0);
3036                 if (status != VXGE_HW_OK)
3037                         return -EFAULT;
3038
3039                 vdev->rx_hwts = 0;
3040                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3041                 break;
3042
3043         case HWTSTAMP_FILTER_ALL:
3044         case HWTSTAMP_FILTER_SOME:
3045         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3046         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3047         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3048         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3049         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3050         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3051         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3052         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3053         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3054         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3055         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3056         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3057                 status = vxge_timestamp_config(vdev, 1);
3058                 if (status != VXGE_HW_OK)
3059                         return -EFAULT;
3060
3061                 vdev->rx_hwts = 1;
3062                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3063                 break;
3064
3065         default:
3066                  return -ERANGE;
3067         }
3068
3069         for (i = 0; i < vdev->no_of_vpath; i++)
3070                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3071
3072         if (copy_to_user(data, &config, sizeof(config)))
3073                 return -EFAULT;
3074
3075         return 0;
3076 }
3077
3078 /**
3079  * vxge_ioctl
3080  * @dev: Device pointer.
3081  * @ifr: An IOCTL specific structure, that can contain a pointer to
3082  *       a proprietary structure used to pass information to the driver.
3083  * @cmd: This is used to distinguish between the different commands that
3084  *       can be passed to the IOCTL functions.
3085  *
3086  * Entry point for the Ioctl.
3087  */
3088 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3089 {
3090         struct vxgedev *vdev = netdev_priv(dev);
3091         int ret;
3092
3093         switch (cmd) {
3094         case SIOCSHWTSTAMP:
3095                 ret = vxge_hwtstamp_ioctl(vdev, rq->ifr_data);
3096                 if (ret)
3097                         return ret;
3098                 break;
3099         default:
3100                 return -EOPNOTSUPP;
3101         }
3102
3103         return 0;
3104 }
3105
3106 /**
3107  * vxge_tx_watchdog
3108  * @dev: pointer to net device structure
3109  *
3110  * Watchdog for transmit side.
3111  * This function is triggered if the Tx Queue is stopped
3112  * for a pre-defined amount of time when the Interface is still up.
3113  */
3114 static void
3115 vxge_tx_watchdog(struct net_device *dev)
3116 {
3117         struct vxgedev *vdev;
3118
3119         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3120
3121         vdev = netdev_priv(dev);
3122
3123         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3124
3125         vxge_reset(vdev);
3126         vxge_debug_entryexit(VXGE_TRACE,
3127                 "%s:%d  Exiting...", __func__, __LINE__);
3128 }
3129
3130 /**
3131  * vxge_vlan_rx_register
3132  * @dev: net device pointer.
3133  * @grp: vlan group
3134  *
3135  * Vlan group registration
3136  */
3137 static void
3138 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3139 {
3140         struct vxgedev *vdev;
3141         struct vxge_vpath *vpath;
3142         int vp;
3143         u64 vid;
3144         enum vxge_hw_status status;
3145         int i;
3146
3147         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3148
3149         vdev = netdev_priv(dev);
3150
3151         vpath = &vdev->vpaths[0];
3152         if ((NULL == grp) && (vpath->is_open)) {
3153                 /* Get the first vlan */
3154                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3155
3156                 while (status == VXGE_HW_OK) {
3157
3158                         /* Delete this vlan from the vid table */
3159                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3160                                 vpath = &vdev->vpaths[vp];
3161                                 if (!vpath->is_open)
3162                                         continue;
3163
3164                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3165                         }
3166
3167                         /* Get the next vlan to be deleted */
3168                         vpath = &vdev->vpaths[0];
3169                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3170                 }
3171         }
3172
3173         vdev->vlgrp = grp;
3174
3175         for (i = 0; i < vdev->no_of_vpath; i++) {
3176                 if (vdev->vpaths[i].is_configured)
3177                         vdev->vpaths[i].ring.vlgrp = grp;
3178         }
3179
3180         vxge_debug_entryexit(VXGE_TRACE,
3181                 "%s:%d  Exiting...", __func__, __LINE__);
3182 }
3183
3184 /**
3185  * vxge_vlan_rx_add_vid
3186  * @dev: net device pointer.
3187  * @vid: vid
3188  *
3189  * Add the vlan id to the devices vlan id table
3190  */
3191 static void
3192 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3193 {
3194         struct vxgedev *vdev;
3195         struct vxge_vpath *vpath;
3196         int vp_id;
3197
3198         vdev = netdev_priv(dev);
3199
3200         /* Add these vlan to the vid table */
3201         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3202                 vpath = &vdev->vpaths[vp_id];
3203                 if (!vpath->is_open)
3204                         continue;
3205                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3206         }
3207 }
3208
3209 /**
3210  * vxge_vlan_rx_add_vid
3211  * @dev: net device pointer.
3212  * @vid: vid
3213  *
3214  * Remove the vlan id from the device's vlan id table
3215  */
3216 static void
3217 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3218 {
3219         struct vxgedev *vdev;
3220         struct vxge_vpath *vpath;
3221         int vp_id;
3222
3223         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3224
3225         vdev = netdev_priv(dev);
3226
3227         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3228
3229         /* Delete this vlan from the vid table */
3230         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3231                 vpath = &vdev->vpaths[vp_id];
3232                 if (!vpath->is_open)
3233                         continue;
3234                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3235         }
3236         vxge_debug_entryexit(VXGE_TRACE,
3237                 "%s:%d  Exiting...", __func__, __LINE__);
3238 }
3239
3240 static const struct net_device_ops vxge_netdev_ops = {
3241         .ndo_open               = vxge_open,
3242         .ndo_stop               = vxge_close,
3243         .ndo_get_stats64        = vxge_get_stats64,
3244         .ndo_start_xmit         = vxge_xmit,
3245         .ndo_validate_addr      = eth_validate_addr,
3246         .ndo_set_multicast_list = vxge_set_multicast,
3247         .ndo_do_ioctl           = vxge_ioctl,
3248         .ndo_set_mac_address    = vxge_set_mac_addr,
3249         .ndo_change_mtu         = vxge_change_mtu,
3250         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3251         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3252         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3253         .ndo_tx_timeout         = vxge_tx_watchdog,
3254 #ifdef CONFIG_NET_POLL_CONTROLLER
3255         .ndo_poll_controller    = vxge_netpoll,
3256 #endif
3257 };
3258
3259 static int __devinit vxge_device_revision(struct vxgedev *vdev)
3260 {
3261         int ret;
3262         u8 revision;
3263
3264         ret = pci_read_config_byte(vdev->pdev, PCI_REVISION_ID, &revision);
3265         if (ret)
3266                 return -EIO;
3267
3268         vdev->titan1 = (revision == VXGE_HW_TITAN1_PCI_REVISION);
3269         return 0;
3270 }
3271
3272 static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3273                                           struct vxge_config *config,
3274                                           int high_dma, int no_of_vpath,
3275                                           struct vxgedev **vdev_out)
3276 {
3277         struct net_device *ndev;
3278         enum vxge_hw_status status = VXGE_HW_OK;
3279         struct vxgedev *vdev;
3280         int ret = 0, no_of_queue = 1;
3281         u64 stat;
3282
3283         *vdev_out = NULL;
3284         if (config->tx_steering_type)
3285                 no_of_queue = no_of_vpath;
3286
3287         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3288                         no_of_queue);
3289         if (ndev == NULL) {
3290                 vxge_debug_init(
3291                         vxge_hw_device_trace_level_get(hldev),
3292                 "%s : device allocation failed", __func__);
3293                 ret = -ENODEV;
3294                 goto _out0;
3295         }
3296
3297         vxge_debug_entryexit(
3298                 vxge_hw_device_trace_level_get(hldev),
3299                 "%s: %s:%d  Entering...",
3300                 ndev->name, __func__, __LINE__);
3301
3302         vdev = netdev_priv(ndev);
3303         memset(vdev, 0, sizeof(struct vxgedev));
3304
3305         vdev->ndev = ndev;
3306         vdev->devh = hldev;
3307         vdev->pdev = hldev->pdev;
3308         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3309         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3310         vdev->rx_hwts = 0;
3311
3312         ret = vxge_device_revision(vdev);
3313         if (ret < 0)
3314                 goto _out1;
3315
3316         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3317
3318         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3319                                 NETIF_F_HW_VLAN_FILTER;
3320         /*  Driver entry points */
3321         ndev->irq = vdev->pdev->irq;
3322         ndev->base_addr = (unsigned long) hldev->bar0;
3323
3324         ndev->netdev_ops = &vxge_netdev_ops;
3325
3326         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3327
3328         vxge_initialize_ethtool_ops(ndev);
3329
3330         if (vdev->config.rth_steering != NO_STEERING) {
3331                 ndev->features |= NETIF_F_RXHASH;
3332                 hldev->config.rth_en = VXGE_HW_RTH_ENABLE;
3333         }
3334
3335         /* Allocate memory for vpath */
3336         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3337                                 no_of_vpath, GFP_KERNEL);
3338         if (!vdev->vpaths) {
3339                 vxge_debug_init(VXGE_ERR,
3340                         "%s: vpath memory allocation failed",
3341                         vdev->ndev->name);
3342                 ret = -ENODEV;
3343                 goto _out1;
3344         }
3345
3346         ndev->features |= NETIF_F_SG;
3347
3348         ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3349         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3350                 "%s : checksuming enabled", __func__);
3351
3352         if (high_dma) {
3353                 ndev->features |= NETIF_F_HIGHDMA;
3354                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3355                         "%s : using High DMA", __func__);
3356         }
3357
3358         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3359
3360         if (vdev->config.gro_enable)
3361                 ndev->features |= NETIF_F_GRO;
3362
3363         if (register_netdev(ndev)) {
3364                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3365                         "%s: %s : device registration failed!",
3366                         ndev->name, __func__);
3367                 ret = -ENODEV;
3368                 goto _out2;
3369         }
3370
3371         /*  Set the factory defined MAC address initially */
3372         ndev->addr_len = ETH_ALEN;
3373
3374         /* Make Link state as off at this point, when the Link change
3375          * interrupt comes the state will be automatically changed to
3376          * the right state.
3377          */
3378         netif_carrier_off(ndev);
3379
3380         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3381                 "%s: Ethernet device registered",
3382                 ndev->name);
3383
3384         hldev->ndev = ndev;
3385         *vdev_out = vdev;
3386
3387         /* Resetting the Device stats */
3388         status = vxge_hw_mrpcim_stats_access(
3389                                 hldev,
3390                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3391                                 0,
3392                                 0,
3393                                 &stat);
3394
3395         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3396                 vxge_debug_init(
3397                         vxge_hw_device_trace_level_get(hldev),
3398                         "%s: device stats clear returns"
3399                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3400
3401         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3402                 "%s: %s:%d  Exiting...",
3403                 ndev->name, __func__, __LINE__);
3404
3405         return ret;
3406 _out2:
3407         kfree(vdev->vpaths);
3408 _out1:
3409         free_netdev(ndev);
3410 _out0:
3411         return ret;
3412 }
3413
3414 /*
3415  * vxge_device_unregister
3416  *
3417  * This function will unregister and free network device
3418  */
3419 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3420 {
3421         struct vxgedev *vdev;
3422         struct net_device *dev;
3423         char buf[IFNAMSIZ];
3424
3425         dev = hldev->ndev;
3426         vdev = netdev_priv(dev);
3427
3428         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3429                              __func__, __LINE__);
3430
3431         strncpy(buf, dev->name, IFNAMSIZ);
3432
3433         /* in 2.6 will call stop() if device is up */
3434         unregister_netdev(dev);
3435
3436         flush_scheduled_work();
3437
3438         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3439                         buf);
3440         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3441                              __func__, __LINE__);
3442 }
3443
3444 /*
3445  * vxge_callback_crit_err
3446  *
3447  * This function is called by the alarm handler in interrupt context.
3448  * Driver must analyze it based on the event type.
3449  */
3450 static void
3451 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3452                         enum vxge_hw_event type, u64 vp_id)
3453 {
3454         struct net_device *dev = hldev->ndev;
3455         struct vxgedev *vdev = netdev_priv(dev);
3456         struct vxge_vpath *vpath = NULL;
3457         int vpath_idx;
3458
3459         vxge_debug_entryexit(vdev->level_trace,
3460                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3461
3462         /* Note: This event type should be used for device wide
3463          * indications only - Serious errors, Slot freeze and critical errors
3464          */
3465         vdev->cric_err_event = type;
3466
3467         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3468                 vpath = &vdev->vpaths[vpath_idx];
3469                 if (vpath->device_id == vp_id)
3470                         break;
3471         }
3472
3473         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3474                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3475                         vxge_debug_init(VXGE_ERR,
3476                                 "%s: Slot is frozen", vdev->ndev->name);
3477                 } else if (type == VXGE_HW_EVENT_SERR) {
3478                         vxge_debug_init(VXGE_ERR,
3479                                 "%s: Encountered Serious Error",
3480                                 vdev->ndev->name);
3481                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3482                         vxge_debug_init(VXGE_ERR,
3483                                 "%s: Encountered Critical Error",
3484                                 vdev->ndev->name);
3485         }
3486
3487         if ((type == VXGE_HW_EVENT_SERR) ||
3488                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3489                 if (unlikely(vdev->exec_mode))
3490                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3491         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3492                 vxge_hw_device_mask_all(hldev);
3493                 if (unlikely(vdev->exec_mode))
3494                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3495         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3496                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3497
3498                 if (unlikely(vdev->exec_mode))
3499                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3500                 else {
3501                         /* check if this vpath is already set for reset */
3502                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3503
3504                                 /* disable interrupts for this vpath */
3505                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3506
3507                                 /* stop the queue for this vpath */
3508                                 netif_tx_stop_queue(vpath->fifo.txq);
3509                         }
3510                 }
3511         }
3512
3513         vxge_debug_entryexit(vdev->level_trace,
3514                 "%s: %s:%d  Exiting...",
3515                 vdev->ndev->name, __func__, __LINE__);
3516 }
3517
3518 static void verify_bandwidth(void)
3519 {
3520         int i, band_width, total = 0, equal_priority = 0;
3521
3522         /* 1. If user enters 0 for some fifo, give equal priority to all */
3523         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3524                 if (bw_percentage[i] == 0) {
3525                         equal_priority = 1;
3526                         break;
3527                 }
3528         }
3529
3530         if (!equal_priority) {
3531                 /* 2. If sum exceeds 100, give equal priority to all */
3532                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3533                         if (bw_percentage[i] == 0xFF)
3534                                 break;
3535
3536                         total += bw_percentage[i];
3537                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3538                                 equal_priority = 1;
3539                                 break;
3540                         }
3541                 }
3542         }
3543
3544         if (!equal_priority) {
3545                 /* Is all the bandwidth consumed? */
3546                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3547                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3548                                 /* Split rest of bw equally among next VPs*/
3549                                 band_width =
3550                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3551                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3552                                 if (band_width < 2) /* min of 2% */
3553                                         equal_priority = 1;
3554                                 else {
3555                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3556                                                 i++)
3557                                                 bw_percentage[i] =
3558                                                         band_width;
3559                                 }
3560                         }
3561                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3562                         equal_priority = 1;
3563         }
3564
3565         if (equal_priority) {
3566                 vxge_debug_init(VXGE_ERR,
3567                         "%s: Assigning equal bandwidth to all the vpaths",
3568                         VXGE_DRIVER_NAME);
3569                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3570                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3571                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3572                         bw_percentage[i] = bw_percentage[0];
3573         }
3574 }
3575
3576 /*
3577  * Vpath configuration
3578  */
3579 static int __devinit vxge_config_vpaths(
3580                         struct vxge_hw_device_config *device_config,
3581                         u64 vpath_mask, struct vxge_config *config_param)
3582 {
3583         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3584         u32 txdl_size, txdl_per_memblock;
3585
3586         temp = driver_config->vpath_per_dev;
3587         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3588                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3589                 /* No more CPU. Return vpath number as zero.*/
3590                 if (driver_config->g_no_cpus == -1)
3591                         return 0;
3592
3593                 if (!driver_config->g_no_cpus)
3594                         driver_config->g_no_cpus = num_online_cpus();
3595
3596                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3597                 if (!driver_config->vpath_per_dev)
3598                         driver_config->vpath_per_dev = 1;
3599
3600                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3601                         if (!vxge_bVALn(vpath_mask, i, 1))
3602                                 continue;
3603                         else
3604                                 default_no_vpath++;
3605                 if (default_no_vpath < driver_config->vpath_per_dev)
3606                         driver_config->vpath_per_dev = default_no_vpath;
3607
3608                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3609                                 (driver_config->vpath_per_dev * 2);
3610                 if (driver_config->g_no_cpus <= 0)
3611                         driver_config->g_no_cpus = -1;
3612         }
3613
3614         if (driver_config->vpath_per_dev == 1) {
3615                 vxge_debug_ll_config(VXGE_TRACE,
3616                         "%s: Disable tx and rx steering, "
3617                         "as single vpath is configured", VXGE_DRIVER_NAME);
3618                 config_param->rth_steering = NO_STEERING;
3619                 config_param->tx_steering_type = NO_STEERING;
3620                 device_config->rth_en = 0;
3621         }
3622
3623         /* configure bandwidth */
3624         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3625                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3626
3627         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3628                 device_config->vp_config[i].vp_id = i;
3629                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3630                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3631                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3632                                 vxge_debug_ll_config(VXGE_TRACE,
3633                                         "%s: vpath: %d is not available",
3634                                         VXGE_DRIVER_NAME, i);
3635                                 continue;
3636                         } else {
3637                                 vxge_debug_ll_config(VXGE_TRACE,
3638                                         "%s: vpath: %d available",
3639                                         VXGE_DRIVER_NAME, i);
3640                                 no_of_vpaths++;
3641                         }
3642                 } else {
3643                         vxge_debug_ll_config(VXGE_TRACE,
3644                                 "%s: vpath: %d is not configured, "
3645                                 "max_config_vpath exceeded",
3646                                 VXGE_DRIVER_NAME, i);
3647                         break;
3648                 }
3649
3650                 /* Configure Tx fifo's */
3651                 device_config->vp_config[i].fifo.enable =
3652                                                 VXGE_HW_FIFO_ENABLE;
3653                 device_config->vp_config[i].fifo.max_frags =
3654                                 MAX_SKB_FRAGS + 1;
3655                 device_config->vp_config[i].fifo.memblock_size =
3656                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3657
3658                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3659                                 sizeof(struct vxge_hw_fifo_txd);
3660                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3661
3662                 device_config->vp_config[i].fifo.fifo_blocks =
3663                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3664
3665                 device_config->vp_config[i].fifo.intr =
3666                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3667
3668                 /* Configure tti properties */
3669                 device_config->vp_config[i].tti.intr_enable =
3670                                         VXGE_HW_TIM_INTR_ENABLE;
3671
3672                 device_config->vp_config[i].tti.btimer_val =
3673                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3674
3675                 device_config->vp_config[i].tti.timer_ac_en =
3676                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3677
3678                 /* For msi-x with napi (each vector has a handler of its own) -
3679                  * Set CI to OFF for all vpaths
3680                  */
3681                 device_config->vp_config[i].tti.timer_ci_en =
3682                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3683
3684                 device_config->vp_config[i].tti.timer_ri_en =
3685                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3686
3687                 device_config->vp_config[i].tti.util_sel =
3688                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3689
3690                 device_config->vp_config[i].tti.ltimer_val =
3691                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3692
3693                 device_config->vp_config[i].tti.rtimer_val =
3694                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3695
3696                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3697                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3698                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3699                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3700                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3701                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3702                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3703
3704                 /* Configure Rx rings */
3705                 device_config->vp_config[i].ring.enable  =
3706                                                 VXGE_HW_RING_ENABLE;
3707
3708                 device_config->vp_config[i].ring.ring_blocks  =
3709                                                 VXGE_HW_DEF_RING_BLOCKS;
3710
3711                 device_config->vp_config[i].ring.buffer_mode =
3712                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3713
3714                 device_config->vp_config[i].ring.rxds_limit  =
3715                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3716
3717                 device_config->vp_config[i].ring.scatter_mode =
3718                                         VXGE_HW_RING_SCATTER_MODE_A;
3719
3720                 /* Configure rti properties */
3721                 device_config->vp_config[i].rti.intr_enable =
3722                                         VXGE_HW_TIM_INTR_ENABLE;
3723
3724                 device_config->vp_config[i].rti.btimer_val =
3725                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3726
3727                 device_config->vp_config[i].rti.timer_ac_en =
3728                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3729
3730                 device_config->vp_config[i].rti.timer_ci_en =
3731                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3732
3733                 device_config->vp_config[i].rti.timer_ri_en =
3734                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3735
3736                 device_config->vp_config[i].rti.util_sel =
3737                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3738
3739                 device_config->vp_config[i].rti.urange_a =
3740                                                 RTI_RX_URANGE_A;
3741                 device_config->vp_config[i].rti.urange_b =
3742                                                 RTI_RX_URANGE_B;
3743                 device_config->vp_config[i].rti.urange_c =
3744                                                 RTI_RX_URANGE_C;
3745                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3746                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3747                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3748                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3749
3750                 device_config->vp_config[i].rti.rtimer_val =
3751                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3752
3753                 device_config->vp_config[i].rti.ltimer_val =
3754                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3755
3756                 device_config->vp_config[i].rpa_strip_vlan_tag =
3757                         vlan_tag_strip;
3758         }
3759
3760         driver_config->vpath_per_dev = temp;
3761         return no_of_vpaths;
3762 }
3763
3764 /* initialize device configuratrions */
3765 static void __devinit vxge_device_config_init(
3766                                 struct vxge_hw_device_config *device_config,
3767                                 int *intr_type)
3768 {
3769         /* Used for CQRQ/SRQ. */
3770         device_config->dma_blockpool_initial =
3771                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3772
3773         device_config->dma_blockpool_max =
3774                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3775
3776         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3777                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3778
3779 #ifndef CONFIG_PCI_MSI
3780         vxge_debug_init(VXGE_ERR,
3781                 "%s: This Kernel does not support "
3782                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3783         *intr_type = INTA;
3784 #endif
3785
3786         /* Configure whether MSI-X or IRQL. */
3787         switch (*intr_type) {
3788         case INTA:
3789                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3790                 break;
3791
3792         case MSI_X:
3793                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3794                 break;
3795         }
3796
3797         /* Timer period between device poll */
3798         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3799
3800         /* Configure mac based steering. */
3801         device_config->rts_mac_en = addr_learn_en;
3802
3803         /* Configure Vpaths */
3804         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3805
3806         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3807                         __func__);
3808         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3809                         device_config->intr_mode);
3810         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3811                         device_config->device_poll_millis);
3812         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3813                         device_config->rth_en);
3814         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3815                         device_config->rth_it_type);
3816 }
3817
3818 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3819 {
3820         int i;
3821
3822         vxge_debug_init(VXGE_TRACE,
3823                 "%s: %d Vpath(s) opened",
3824                 vdev->ndev->name, vdev->no_of_vpath);
3825
3826         switch (vdev->config.intr_type) {
3827         case INTA:
3828                 vxge_debug_init(VXGE_TRACE,
3829                         "%s: Interrupt type INTA", vdev->ndev->name);
3830                 break;
3831
3832         case MSI_X:
3833                 vxge_debug_init(VXGE_TRACE,
3834                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3835                 break;
3836         }
3837
3838         if (vdev->config.rth_steering) {
3839                 vxge_debug_init(VXGE_TRACE,
3840                         "%s: RTH steering enabled for TCP_IPV4",
3841                         vdev->ndev->name);
3842         } else {
3843                 vxge_debug_init(VXGE_TRACE,
3844                         "%s: RTH steering disabled", vdev->ndev->name);
3845         }
3846
3847         switch (vdev->config.tx_steering_type) {
3848         case NO_STEERING:
3849                 vxge_debug_init(VXGE_TRACE,
3850                         "%s: Tx steering disabled", vdev->ndev->name);
3851                 break;
3852         case TX_PRIORITY_STEERING:
3853                 vxge_debug_init(VXGE_TRACE,
3854                         "%s: Unsupported tx steering option",
3855                         vdev->ndev->name);
3856                 vxge_debug_init(VXGE_TRACE,
3857                         "%s: Tx steering disabled", vdev->ndev->name);
3858                 vdev->config.tx_steering_type = 0;
3859                 break;
3860         case TX_VLAN_STEERING:
3861                 vxge_debug_init(VXGE_TRACE,
3862                         "%s: Unsupported tx steering option",
3863                         vdev->ndev->name);
3864                 vxge_debug_init(VXGE_TRACE,
3865                         "%s: Tx steering disabled", vdev->ndev->name);
3866                 vdev->config.tx_steering_type = 0;
3867                 break;
3868         case TX_MULTIQ_STEERING:
3869                 vxge_debug_init(VXGE_TRACE,
3870                         "%s: Tx multiqueue steering enabled",
3871                         vdev->ndev->name);
3872                 break;
3873         case TX_PORT_STEERING:
3874                 vxge_debug_init(VXGE_TRACE,
3875                         "%s: Tx port steering enabled",
3876                         vdev->ndev->name);
3877                 break;
3878         default:
3879                 vxge_debug_init(VXGE_ERR,
3880                         "%s: Unsupported tx steering type",
3881                         vdev->ndev->name);
3882                 vxge_debug_init(VXGE_TRACE,
3883                         "%s: Tx steering disabled", vdev->ndev->name);
3884                 vdev->config.tx_steering_type = 0;
3885         }
3886
3887         if (vdev->config.gro_enable) {
3888                 vxge_debug_init(VXGE_ERR,
3889                         "%s: Generic receive offload enabled",
3890                         vdev->ndev->name);
3891         } else
3892                 vxge_debug_init(VXGE_TRACE,
3893                         "%s: Generic receive offload disabled",
3894                         vdev->ndev->name);
3895
3896         if (vdev->config.addr_learn_en)
3897                 vxge_debug_init(VXGE_TRACE,
3898                         "%s: MAC Address learning enabled", vdev->ndev->name);
3899
3900         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3901                 if (!vxge_bVALn(vpath_mask, i, 1))
3902                         continue;
3903                 vxge_debug_ll_config(VXGE_TRACE,
3904                         "%s: MTU size - %d", vdev->ndev->name,
3905                         ((struct __vxge_hw_device  *)(vdev->devh))->
3906                                 config.vp_config[i].mtu);
3907                 vxge_debug_init(VXGE_TRACE,
3908                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3909                         ((struct __vxge_hw_device  *)(vdev->devh))->
3910                                 config.vp_config[i].rpa_strip_vlan_tag
3911                         ? "Enabled" : "Disabled");
3912                 vxge_debug_ll_config(VXGE_TRACE,
3913                         "%s: Max frags : %d", vdev->ndev->name,
3914                         ((struct __vxge_hw_device  *)(vdev->devh))->
3915                                 config.vp_config[i].fifo.max_frags);
3916                 break;
3917         }
3918 }
3919
3920 #ifdef CONFIG_PM
3921 /**
3922  * vxge_pm_suspend - vxge power management suspend entry point
3923  *
3924  */
3925 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3926 {
3927         return -ENOSYS;
3928 }
3929 /**
3930  * vxge_pm_resume - vxge power management resume entry point
3931  *
3932  */
3933 static int vxge_pm_resume(struct pci_dev *pdev)
3934 {
3935         return -ENOSYS;
3936 }
3937
3938 #endif
3939
3940 /**
3941  * vxge_io_error_detected - called when PCI error is detected
3942  * @pdev: Pointer to PCI device
3943  * @state: The current pci connection state
3944  *
3945  * This function is called after a PCI bus error affecting
3946  * this device has been detected.
3947  */
3948 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3949                                                 pci_channel_state_t state)
3950 {
3951         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
3952         struct net_device *netdev = hldev->ndev;
3953
3954         netif_device_detach(netdev);
3955
3956         if (state == pci_channel_io_perm_failure)
3957                 return PCI_ERS_RESULT_DISCONNECT;
3958
3959         if (netif_running(netdev)) {
3960                 /* Bring down the card, while avoiding PCI I/O */
3961                 do_vxge_close(netdev, 0);
3962         }
3963
3964         pci_disable_device(pdev);
3965
3966         return PCI_ERS_RESULT_NEED_RESET;
3967 }
3968
3969 /**
3970  * vxge_io_slot_reset - called after the pci bus has been reset.
3971  * @pdev: Pointer to PCI device
3972  *
3973  * Restart the card from scratch, as if from a cold-boot.
3974  * At this point, the card has exprienced a hard reset,
3975  * followed by fixups by BIOS, and has its config space
3976  * set up identically to what it was at cold boot.
3977  */
3978 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3979 {
3980         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
3981         struct net_device *netdev = hldev->ndev;
3982
3983         struct vxgedev *vdev = netdev_priv(netdev);
3984
3985         if (pci_enable_device(pdev)) {
3986                 netdev_err(netdev, "Cannot re-enable device after reset\n");
3987                 return PCI_ERS_RESULT_DISCONNECT;
3988         }
3989
3990         pci_set_master(pdev);
3991         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
3992
3993         return PCI_ERS_RESULT_RECOVERED;
3994 }
3995
3996 /**
3997  * vxge_io_resume - called when traffic can start flowing again.
3998  * @pdev: Pointer to PCI device
3999  *
4000  * This callback is called when the error recovery driver tells
4001  * us that its OK to resume normal operation.
4002  */
4003 static void vxge_io_resume(struct pci_dev *pdev)
4004 {
4005         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4006         struct net_device *netdev = hldev->ndev;
4007
4008         if (netif_running(netdev)) {
4009                 if (vxge_open(netdev)) {
4010                         netdev_err(netdev,
4011                                    "Can't bring device back up after reset\n");
4012                         return;
4013                 }
4014         }
4015
4016         netif_device_attach(netdev);
4017 }
4018
4019 static inline u32 vxge_get_num_vfs(u64 function_mode)
4020 {
4021         u32 num_functions = 0;
4022
4023         switch (function_mode) {
4024         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4025         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4026                 num_functions = 8;
4027                 break;
4028         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4029                 num_functions = 1;
4030                 break;
4031         case VXGE_HW_FUNCTION_MODE_SRIOV:
4032         case VXGE_HW_FUNCTION_MODE_MRIOV:
4033         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4034                 num_functions = 17;
4035                 break;
4036         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4037                 num_functions = 4;
4038                 break;
4039         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4040                 num_functions = 2;
4041                 break;
4042         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4043                 num_functions = 8; /* TODO */
4044                 break;
4045         }
4046         return num_functions;
4047 }
4048
4049 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4050 {
4051         struct __vxge_hw_device *hldev = vdev->devh;
4052         u32 maj, min, bld, cmaj, cmin, cbld;
4053         enum vxge_hw_status status;
4054         const struct firmware *fw;
4055         int ret;
4056
4057         ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4058         if (ret) {
4059                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4060                                 VXGE_DRIVER_NAME, fw_name);
4061                 goto out;
4062         }
4063
4064         /* Load the new firmware onto the adapter */
4065         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4066         if (status != VXGE_HW_OK) {
4067                 vxge_debug_init(VXGE_ERR,
4068                                 "%s: FW image download to adapter failed '%s'.",
4069                                 VXGE_DRIVER_NAME, fw_name);
4070                 ret = -EIO;
4071                 goto out;
4072         }
4073
4074         /* Read the version of the new firmware */
4075         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4076         if (status != VXGE_HW_OK) {
4077                 vxge_debug_init(VXGE_ERR,
4078                                 "%s: Upgrade read version failed '%s'.",
4079                                 VXGE_DRIVER_NAME, fw_name);
4080                 ret = -EIO;
4081                 goto out;
4082         }
4083
4084         cmaj = vdev->config.device_hw_info.fw_version.major;
4085         cmin = vdev->config.device_hw_info.fw_version.minor;
4086         cbld = vdev->config.device_hw_info.fw_version.build;
4087         /* It's possible the version in /lib/firmware is not the latest version.
4088          * If so, we could get into a loop of trying to upgrade to the latest
4089          * and flashing the older version.
4090          */
4091         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4092             !override) {
4093                 ret = -EINVAL;
4094                 goto out;
4095         }
4096
4097         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4098                maj, min, bld);
4099
4100         /* Flash the adapter with the new firmware */
4101         status = vxge_hw_flash_fw(hldev);
4102         if (status != VXGE_HW_OK) {
4103                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4104                                 VXGE_DRIVER_NAME, fw_name);
4105                 ret = -EIO;
4106                 goto out;
4107         }
4108
4109         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4110                "hard reset before using, thus requiring a system reboot or a "
4111                "hotplug event.\n");
4112
4113 out:
4114         return ret;
4115 }
4116
4117 static int vxge_probe_fw_update(struct vxgedev *vdev)
4118 {
4119         u32 maj, min, bld;
4120         int ret, gpxe = 0;
4121         char *fw_name;
4122
4123         maj = vdev->config.device_hw_info.fw_version.major;
4124         min = vdev->config.device_hw_info.fw_version.minor;
4125         bld = vdev->config.device_hw_info.fw_version.build;
4126
4127         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4128                 return 0;
4129
4130         /* Ignore the build number when determining if the current firmware is
4131          * "too new" to load the driver
4132          */
4133         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4134                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4135                                 "version, unable to load driver\n",
4136                                 VXGE_DRIVER_NAME);
4137                 return -EINVAL;
4138         }
4139
4140         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4141          * work with this driver.
4142          */
4143         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4144                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4145                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4146                 return -EINVAL;
4147         }
4148
4149         /* If file not specified, determine gPXE or not */
4150         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4151                 int i;
4152                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4153                         if (vdev->devh->eprom_versions[i]) {
4154                                 gpxe = 1;
4155                                 break;
4156                         }
4157         }
4158         if (gpxe)
4159                 fw_name = "vxge/X3fw-pxe.ncf";
4160         else
4161                 fw_name = "vxge/X3fw.ncf";
4162
4163         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4164         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4165          * probe, so ignore them
4166          */
4167         if (ret != -EINVAL && ret != -ENOENT)
4168                 return -EIO;
4169         else
4170                 ret = 0;
4171
4172         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4173             VXGE_FW_VER(maj, min, 0)) {
4174                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4175                                 " be used with this driver.\n"
4176                                 "Please get the latest version from "
4177                                 "ftp://ftp.s2io.com/pub/X3100-Drivers/FIRMWARE",
4178                                 VXGE_DRIVER_NAME, maj, min, bld);
4179                 return -EINVAL;
4180         }
4181
4182         return ret;
4183 }
4184
4185 static int __devinit is_sriov_initialized(struct pci_dev *pdev)
4186 {
4187         int pos;
4188         u16 ctrl;
4189
4190         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4191         if (pos) {
4192                 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4193                 if (ctrl & PCI_SRIOV_CTRL_VFE)
4194                         return 1;
4195         }
4196         return 0;
4197 }
4198
4199 /**
4200  * vxge_probe
4201  * @pdev : structure containing the PCI related information of the device.
4202  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4203  * Description:
4204  * This function is called when a new PCI device gets detected and initializes
4205  * it.
4206  * Return value:
4207  * returns 0 on success and negative on failure.
4208  *
4209  */
4210 static int __devinit
4211 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4212 {
4213         struct __vxge_hw_device *hldev;
4214         enum vxge_hw_status status;
4215         int ret;
4216         int high_dma = 0;
4217         u64 vpath_mask = 0;
4218         struct vxgedev *vdev;
4219         struct vxge_config *ll_config = NULL;
4220         struct vxge_hw_device_config *device_config = NULL;
4221         struct vxge_hw_device_attr attr;
4222         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4223         u8 *macaddr;
4224         struct vxge_mac_addrs *entry;
4225         static int bus = -1, device = -1;
4226         u32 host_type;
4227         u8 new_device = 0;
4228         enum vxge_hw_status is_privileged;
4229         u32 function_mode;
4230         u32 num_vfs = 0;
4231
4232         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4233         attr.pdev = pdev;
4234
4235         /* In SRIOV-17 mode, functions of the same adapter
4236          * can be deployed on different buses
4237          */
4238         if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4239             !pdev->is_virtfn)
4240                 new_device = 1;
4241
4242         bus = pdev->bus->number;
4243         device = PCI_SLOT(pdev->devfn);
4244
4245         if (new_device) {
4246                 if (driver_config->config_dev_cnt &&
4247                    (driver_config->config_dev_cnt !=
4248                         driver_config->total_dev_cnt))
4249                         vxge_debug_init(VXGE_ERR,
4250                                 "%s: Configured %d of %d devices",
4251                                 VXGE_DRIVER_NAME,
4252                                 driver_config->config_dev_cnt,
4253                                 driver_config->total_dev_cnt);
4254                 driver_config->config_dev_cnt = 0;
4255                 driver_config->total_dev_cnt = 0;
4256         }
4257
4258         /* Now making the CPU based no of vpath calculation
4259          * applicable for individual functions as well.
4260          */
4261         driver_config->g_no_cpus = 0;
4262         driver_config->vpath_per_dev = max_config_vpath;
4263
4264         driver_config->total_dev_cnt++;
4265         if (++driver_config->config_dev_cnt > max_config_dev) {
4266                 ret = 0;
4267                 goto _exit0;
4268         }
4269
4270         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4271                 GFP_KERNEL);
4272         if (!device_config) {
4273                 ret = -ENOMEM;
4274                 vxge_debug_init(VXGE_ERR,
4275                         "device_config : malloc failed %s %d",
4276                         __FILE__, __LINE__);
4277                 goto _exit0;
4278         }
4279
4280         ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4281         if (!ll_config) {
4282                 ret = -ENOMEM;
4283                 vxge_debug_init(VXGE_ERR,
4284                         "device_config : malloc failed %s %d",
4285                         __FILE__, __LINE__);
4286                 goto _exit0;
4287         }
4288         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4289         ll_config->intr_type = MSI_X;
4290         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4291         ll_config->rth_steering = RTH_STEERING;
4292
4293         /* get the default configuration parameters */
4294         vxge_hw_device_config_default_get(device_config);
4295
4296         /* initialize configuration parameters */
4297         vxge_device_config_init(device_config, &ll_config->intr_type);
4298
4299         ret = pci_enable_device(pdev);
4300         if (ret) {
4301                 vxge_debug_init(VXGE_ERR,
4302                         "%s : can not enable PCI device", __func__);
4303                 goto _exit0;
4304         }
4305
4306         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4307                 vxge_debug_ll_config(VXGE_TRACE,
4308                         "%s : using 64bit DMA", __func__);
4309
4310                 high_dma = 1;
4311
4312                 if (pci_set_consistent_dma_mask(pdev,
4313                                                 DMA_BIT_MASK(64))) {
4314                         vxge_debug_init(VXGE_ERR,
4315                                 "%s : unable to obtain 64bit DMA for "
4316                                 "consistent allocations", __func__);
4317                         ret = -ENOMEM;
4318                         goto _exit1;
4319                 }
4320         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4321                 vxge_debug_ll_config(VXGE_TRACE,
4322                         "%s : using 32bit DMA", __func__);
4323         } else {
4324                 ret = -ENOMEM;
4325                 goto _exit1;
4326         }
4327
4328         if (pci_request_region(pdev, 0, VXGE_DRIVER_NAME)) {
4329                 vxge_debug_init(VXGE_ERR,
4330                         "%s : request regions failed", __func__);
4331                 ret = -ENODEV;
4332                 goto _exit1;
4333         }
4334
4335         pci_set_master(pdev);
4336
4337         attr.bar0 = pci_ioremap_bar(pdev, 0);
4338         if (!attr.bar0) {
4339                 vxge_debug_init(VXGE_ERR,
4340                         "%s : cannot remap io memory bar0", __func__);
4341                 ret = -ENODEV;
4342                 goto _exit2;
4343         }
4344         vxge_debug_ll_config(VXGE_TRACE,
4345                 "pci ioremap bar0: %p:0x%llx",
4346                 attr.bar0,
4347                 (unsigned long long)pci_resource_start(pdev, 0));
4348
4349         status = vxge_hw_device_hw_info_get(attr.bar0,
4350                         &ll_config->device_hw_info);
4351         if (status != VXGE_HW_OK) {
4352                 vxge_debug_init(VXGE_ERR,
4353                         "%s: Reading of hardware info failed."
4354                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4355                 ret = -EINVAL;
4356                 goto _exit3;
4357         }
4358
4359         vpath_mask = ll_config->device_hw_info.vpath_mask;
4360         if (vpath_mask == 0) {
4361                 vxge_debug_ll_config(VXGE_TRACE,
4362                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4363                 ret = -EINVAL;
4364                 goto _exit3;
4365         }
4366
4367         vxge_debug_ll_config(VXGE_TRACE,
4368                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4369                 (unsigned long long)vpath_mask);
4370
4371         function_mode = ll_config->device_hw_info.function_mode;
4372         host_type = ll_config->device_hw_info.host_type;
4373         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4374                 ll_config->device_hw_info.func_id);
4375
4376         /* Check how many vpaths are available */
4377         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4378                 if (!((vpath_mask) & vxge_mBIT(i)))
4379                         continue;
4380                 max_vpath_supported++;
4381         }
4382
4383         if (new_device)
4384                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4385
4386         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4387         if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4388            (ll_config->intr_type != INTA)) {
4389                 ret = pci_enable_sriov(pdev, num_vfs);
4390                 if (ret)
4391                         vxge_debug_ll_config(VXGE_ERR,
4392                                 "Failed in enabling SRIOV mode: %d\n", ret);
4393                         /* No need to fail out, as an error here is non-fatal */
4394         }
4395
4396         /*
4397          * Configure vpaths and get driver configured number of vpaths
4398          * which is less than or equal to the maximum vpaths per function.
4399          */
4400         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4401         if (!no_of_vpath) {
4402                 vxge_debug_ll_config(VXGE_ERR,
4403                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4404                 ret = 0;
4405                 goto _exit3;
4406         }
4407
4408         /* Setting driver callbacks */
4409         attr.uld_callbacks.link_up = vxge_callback_link_up;
4410         attr.uld_callbacks.link_down = vxge_callback_link_down;
4411         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4412
4413         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4414         if (status != VXGE_HW_OK) {
4415                 vxge_debug_init(VXGE_ERR,
4416                         "Failed to initialize device (%d)", status);
4417                         ret = -EINVAL;
4418                         goto _exit3;
4419         }
4420
4421         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4422                         ll_config->device_hw_info.fw_version.minor,
4423                         ll_config->device_hw_info.fw_version.build) >=
4424             VXGE_EPROM_FW_VER) {
4425                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4426
4427                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4428                 if (status != VXGE_HW_OK) {
4429                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4430                                         VXGE_DRIVER_NAME);
4431                         /* This is a non-fatal error, continue */
4432                 }
4433
4434                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4435                         hldev->eprom_versions[i] = img[i].version;
4436                         if (!img[i].is_valid)
4437                                 break;
4438                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4439                                         "%d.%d.%d.%d\n", VXGE_DRIVER_NAME, i,
4440                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4441                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4442                                         VXGE_EPROM_IMG_FIX(img[i].version),
4443                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4444                 }
4445         }
4446
4447         /* if FCS stripping is not disabled in MAC fail driver load */
4448         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4449         if (status != VXGE_HW_OK) {
4450                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4451                                 " failing driver load", VXGE_DRIVER_NAME);
4452                 ret = -EINVAL;
4453                 goto _exit4;
4454         }
4455
4456         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4457
4458         /* set private device info */
4459         pci_set_drvdata(pdev, hldev);
4460
4461         ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4462         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4463         ll_config->addr_learn_en = addr_learn_en;
4464         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4465         ll_config->rth_hash_type_tcpipv4 = 1;
4466         ll_config->rth_hash_type_ipv4 = 0;
4467         ll_config->rth_hash_type_tcpipv6 = 0;
4468         ll_config->rth_hash_type_ipv6 = 0;
4469         ll_config->rth_hash_type_tcpipv6ex = 0;
4470         ll_config->rth_hash_type_ipv6ex = 0;
4471         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4472         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4473         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4474
4475         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4476                                    &vdev);
4477         if (ret) {
4478                 ret = -EINVAL;
4479                 goto _exit4;
4480         }
4481
4482         ret = vxge_probe_fw_update(vdev);
4483         if (ret)
4484                 goto _exit5;
4485
4486         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4487         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4488                 vxge_hw_device_trace_level_get(hldev));
4489
4490         /* set private HW device info */
4491         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4492         vdev->bar0 = attr.bar0;
4493         vdev->max_vpath_supported = max_vpath_supported;
4494         vdev->no_of_vpath = no_of_vpath;
4495
4496         /* Virtual Path count */
4497         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4498                 if (!vxge_bVALn(vpath_mask, i, 1))
4499                         continue;
4500                 if (j >= vdev->no_of_vpath)
4501                         break;
4502
4503                 vdev->vpaths[j].is_configured = 1;
4504                 vdev->vpaths[j].device_id = i;
4505                 vdev->vpaths[j].ring.driver_id = j;
4506                 vdev->vpaths[j].vdev = vdev;
4507                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4508                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4509                                 ll_config->device_hw_info.mac_addrs[i],
4510                                 ETH_ALEN);
4511
4512                 /* Initialize the mac address list header */
4513                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4514
4515                 vdev->vpaths[j].mac_addr_cnt = 0;
4516                 vdev->vpaths[j].mcast_addr_cnt = 0;
4517                 j++;
4518         }
4519         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4520         vdev->max_config_port = max_config_port;
4521
4522         vdev->vlan_tag_strip = vlan_tag_strip;
4523
4524         /* map the hashing selector table to the configured vpaths */
4525         for (i = 0; i < vdev->no_of_vpath; i++)
4526                 vdev->vpath_selector[i] = vpath_selector[i];
4527
4528         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4529
4530         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4531         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4532         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4533
4534         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4535                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4536
4537         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4538                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4539
4540         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4541                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4542
4543         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4544                 vdev->ndev->name, macaddr);
4545
4546         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4547                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4548
4549         vxge_debug_init(VXGE_TRACE,
4550                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4551                 ll_config->device_hw_info.fw_version.version,
4552                 ll_config->device_hw_info.fw_date.date);
4553
4554         if (new_device) {
4555                 switch (ll_config->device_hw_info.function_mode) {
4556                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4557                         vxge_debug_init(VXGE_TRACE,
4558                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4559                 break;
4560                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4561                         vxge_debug_init(VXGE_TRACE,
4562                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4563                 break;
4564                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4565                         vxge_debug_init(VXGE_TRACE,
4566                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4567                 break;
4568                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4569                         vxge_debug_init(VXGE_TRACE,
4570                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4571                 break;
4572                 }
4573         }
4574
4575         vxge_print_parm(vdev, vpath_mask);
4576
4577         /* Store the fw version for ethttool option */
4578         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4579         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4580         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4581
4582         /* Copy the station mac address to the list */
4583         for (i = 0; i < vdev->no_of_vpath; i++) {
4584                 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4585                 if (NULL == entry) {
4586                         vxge_debug_init(VXGE_ERR,
4587                                 "%s: mac_addr_list : memory allocation failed",
4588                                 vdev->ndev->name);
4589                         ret = -EPERM;
4590                         goto _exit6;
4591                 }
4592                 macaddr = (u8 *)&entry->macaddr;
4593                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4594                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4595                 vdev->vpaths[i].mac_addr_cnt = 1;
4596         }
4597
4598         kfree(device_config);
4599
4600         /*
4601          * INTA is shared in multi-function mode. This is unlike the INTA
4602          * implementation in MR mode, where each VH has its own INTA message.
4603          * - INTA is masked (disabled) as long as at least one function sets
4604          * its TITAN_MASK_ALL_INT.ALARM bit.
4605          * - INTA is unmasked (enabled) when all enabled functions have cleared
4606          * their own TITAN_MASK_ALL_INT.ALARM bit.
4607          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4608          * Though this driver leaves the top level interrupts unmasked while
4609          * leaving the required module interrupt bits masked on exit, there
4610          * could be a rougue driver around that does not follow this procedure
4611          * resulting in a failure to generate interrupts. The following code is
4612          * present to prevent such a failure.
4613          */
4614
4615         if (ll_config->device_hw_info.function_mode ==
4616                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4617                 if (vdev->config.intr_type == INTA)
4618                         vxge_hw_device_unmask_all(hldev);
4619
4620         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4621                 vdev->ndev->name, __func__, __LINE__);
4622
4623         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4624         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4625                 vxge_hw_device_trace_level_get(hldev));
4626
4627         kfree(ll_config);
4628         return 0;
4629
4630 _exit6:
4631         for (i = 0; i < vdev->no_of_vpath; i++)
4632                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4633 _exit5:
4634         vxge_device_unregister(hldev);
4635 _exit4:
4636         pci_disable_sriov(pdev);
4637         vxge_hw_device_terminate(hldev);
4638 _exit3:
4639         iounmap(attr.bar0);
4640 _exit2:
4641         pci_release_region(pdev, 0);
4642 _exit1:
4643         pci_disable_device(pdev);
4644 _exit0:
4645         kfree(ll_config);
4646         kfree(device_config);
4647         driver_config->config_dev_cnt--;
4648         pci_set_drvdata(pdev, NULL);
4649         return ret;
4650 }
4651
4652 /**
4653  * vxge_rem_nic - Free the PCI device
4654  * @pdev: structure containing the PCI related information of the device.
4655  * Description: This function is called by the Pci subsystem to release a
4656  * PCI device and free up all resource held up by the device.
4657  */
4658 static void __devexit vxge_remove(struct pci_dev *pdev)
4659 {
4660         struct __vxge_hw_device *hldev;
4661         struct vxgedev *vdev = NULL;
4662         struct net_device *dev;
4663         int i = 0;
4664
4665         hldev = pci_get_drvdata(pdev);
4666
4667         if (hldev == NULL)
4668                 return;
4669
4670         dev = hldev->ndev;
4671         vdev = netdev_priv(dev);
4672
4673         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4674
4675         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4676                         __func__);
4677         vxge_device_unregister(hldev);
4678
4679         for (i = 0; i < vdev->no_of_vpath; i++) {
4680                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4681                 vdev->vpaths[i].mcast_addr_cnt = 0;
4682                 vdev->vpaths[i].mac_addr_cnt = 0;
4683         }
4684
4685         kfree(vdev->vpaths);
4686
4687         iounmap(vdev->bar0);
4688
4689         /* we are safe to free it now */
4690         free_netdev(dev);
4691
4692         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4693                         __func__, __LINE__);
4694
4695         vxge_hw_device_terminate(hldev);
4696
4697         pci_disable_device(pdev);
4698         pci_release_region(pdev, 0);
4699         pci_set_drvdata(pdev, NULL);
4700         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4701                              __LINE__);
4702 }
4703
4704 static struct pci_error_handlers vxge_err_handler = {
4705         .error_detected = vxge_io_error_detected,
4706         .slot_reset = vxge_io_slot_reset,
4707         .resume = vxge_io_resume,
4708 };
4709
4710 static struct pci_driver vxge_driver = {
4711         .name = VXGE_DRIVER_NAME,
4712         .id_table = vxge_id_table,
4713         .probe = vxge_probe,
4714         .remove = __devexit_p(vxge_remove),
4715 #ifdef CONFIG_PM
4716         .suspend = vxge_pm_suspend,
4717         .resume = vxge_pm_resume,
4718 #endif
4719         .err_handler = &vxge_err_handler,
4720 };
4721
4722 static int __init
4723 vxge_starter(void)
4724 {
4725         int ret = 0;
4726
4727         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4728         pr_info("Driver version: %s\n", DRV_VERSION);
4729
4730         verify_bandwidth();
4731
4732         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4733         if (!driver_config)
4734                 return -ENOMEM;
4735
4736         ret = pci_register_driver(&vxge_driver);
4737         if (ret) {
4738                 kfree(driver_config);
4739                 goto err;
4740         }
4741
4742         if (driver_config->config_dev_cnt &&
4743            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4744                 vxge_debug_init(VXGE_ERR,
4745                         "%s: Configured %d of %d devices",
4746                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4747                         driver_config->total_dev_cnt);
4748 err:
4749         return ret;
4750 }
4751
4752 static void __exit
4753 vxge_closer(void)
4754 {
4755         pci_unregister_driver(&vxge_driver);
4756         kfree(driver_config);
4757 }
4758 module_init(vxge_starter);
4759 module_exit(vxge_closer);