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