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 Neterion Inc's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2009 Neterion Inc.
  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 #include <linux/if_vlan.h>
  45 #include <linux/pci.h>
  46 #include <linux/tcp.h>
  47 #include <net/ip.h>
  48 #include <linux/netdevice.h>
  49 #include <linux/etherdevice.h>
  50 #include "vxge-main.h"
  51 #include "vxge-reg.h"
  52
  53 MODULE_LICENSE("Dual BSD/GPL");
  54 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  55         "Virtualized Server Adapter");
  56
  57 static struct pci_device_id vxge_id_table[] __devinitdata = {
  58         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  59         PCI_ANY_ID},
  60         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  61         PCI_ANY_ID},
  62         {0}
  63 };
  64
  65 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  66
  67 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  68 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  69 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  70 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  71 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  72 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  73
  74 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  75                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  76 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  77         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  78 module_param_array(bw_percentage, uint, NULL, 0);
  79
  80 static struct vxge_drv_config *driver_config;
  81
  82 static inline int is_vxge_card_up(struct vxgedev *vdev)
  83 {
  84         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  85 }
  86
  87 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  88 {
  89         unsigned long flags = 0;
  90         struct sk_buff *skb_ptr = NULL;
  91         struct sk_buff **temp, *head, *skb;
  92
  93         if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
  94                 vxge_hw_vpath_poll_tx(fifo->handle, (void **)&skb_ptr);
  95                 spin_unlock_irqrestore(&fifo->tx_lock, flags);
  96         }
  97         /* free SKBs */
  98         head = skb_ptr;
  99         while (head) {
 100                 skb = head;
 101                 temp = (struct sk_buff **)&skb->cb;
 102                 head = *temp;
 103                 *temp = NULL;
 104                 dev_kfree_skb_irq(skb);
 105         }
 106 }
 107
 108 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 109 {
 110         int i;
 111
 112         /* Complete all transmits */
 113         for (i = 0; i < vdev->no_of_vpath; i++)
 114                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 115 }
 116
 117 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 118 {
 119         int i;
 120         struct vxge_ring *ring;
 121
 122         /* Complete all receives*/
 123         for (i = 0; i < vdev->no_of_vpath; i++) {
 124                 ring = &vdev->vpaths[i].ring;
 125                 vxge_hw_vpath_poll_rx(ring->handle);
 126         }
 127 }
 128
 129 /*
 130  * MultiQ manipulation helper functions
 131  */
 132 void vxge_stop_all_tx_queue(struct vxgedev *vdev)
 133 {
 134         int i;
 135         struct net_device *dev = vdev->ndev;
 136
 137         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 138                 for (i = 0; i < vdev->no_of_vpath; i++)
 139                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP;
 140         }
 141         netif_tx_stop_all_queues(dev);
 142 }
 143
 144 void vxge_stop_tx_queue(struct vxge_fifo *fifo)
 145 {
 146         struct net_device *dev = fifo->ndev;
 147
 148         struct netdev_queue *txq = NULL;
 149         if (fifo->tx_steering_type == TX_MULTIQ_STEERING)
 150                 txq = netdev_get_tx_queue(dev, fifo->driver_id);
 151         else {
 152                 txq = netdev_get_tx_queue(dev, 0);
 153                 fifo->queue_state = VPATH_QUEUE_STOP;
 154         }
 155
 156         netif_tx_stop_queue(txq);
 157 }
 158
 159 void vxge_start_all_tx_queue(struct vxgedev *vdev)
 160 {
 161         int i;
 162         struct net_device *dev = vdev->ndev;
 163
 164         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 165                 for (i = 0; i < vdev->no_of_vpath; i++)
 166                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
 167         }
 168         netif_tx_start_all_queues(dev);
 169 }
 170
 171 static void vxge_wake_all_tx_queue(struct vxgedev *vdev)
 172 {
 173         int i;
 174         struct net_device *dev = vdev->ndev;
 175
 176         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 177                 for (i = 0; i < vdev->no_of_vpath; i++)
 178                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
 179         }
 180         netif_tx_wake_all_queues(dev);
 181 }
 182
 183 void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb)
 184 {
 185         struct net_device *dev = fifo->ndev;
 186
 187         int vpath_no = fifo->driver_id;
 188         struct netdev_queue *txq = NULL;
 189         if (fifo->tx_steering_type == TX_MULTIQ_STEERING) {
 190                 txq = netdev_get_tx_queue(dev, vpath_no);
 191                 if (netif_tx_queue_stopped(txq))
 192                         netif_tx_wake_queue(txq);
 193         } else {
 194                 txq = netdev_get_tx_queue(dev, 0);
 195                 if (fifo->queue_state == VPATH_QUEUE_STOP)
 196                         if (netif_tx_queue_stopped(txq)) {
 197                                 fifo->queue_state = VPATH_QUEUE_START;
 198                                 netif_tx_wake_queue(txq);
 199                         }
 200         }
 201 }
 202
 203 /*
 204  * vxge_callback_link_up
 205  *
 206  * This function is called during interrupt context to notify link up state
 207  * change.
 208  */
 209 void
 210 vxge_callback_link_up(struct __vxge_hw_device *hldev)
 211 {
 212         struct net_device *dev = hldev->ndev;
 213         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 214
 215         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 216                 vdev->ndev->name, __func__, __LINE__);
 217         printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
 218         vdev->stats.link_up++;
 219
 220         netif_carrier_on(vdev->ndev);
 221         vxge_wake_all_tx_queue(vdev);
 222
 223         vxge_debug_entryexit(VXGE_TRACE,
 224                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 225 }
 226
 227 /*
 228  * vxge_callback_link_down
 229  *
 230  * This function is called during interrupt context to notify link down state
 231  * change.
 232  */
 233 void
 234 vxge_callback_link_down(struct __vxge_hw_device *hldev)
 235 {
 236         struct net_device *dev = hldev->ndev;
 237         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 238
 239         vxge_debug_entryexit(VXGE_TRACE,
 240                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 241         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
 242
 243         vdev->stats.link_down++;
 244         netif_carrier_off(vdev->ndev);
 245         vxge_stop_all_tx_queue(vdev);
 246
 247         vxge_debug_entryexit(VXGE_TRACE,
 248                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 249 }
 250
 251 /*
 252  * vxge_rx_alloc
 253  *
 254  * Allocate SKB.
 255  */
 256 static struct sk_buff*
 257 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 258 {
 259         struct net_device    *dev;
 260         struct sk_buff       *skb;
 261         struct vxge_rx_priv *rx_priv;
 262
 263         dev = ring->ndev;
 264         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 265                 ring->ndev->name, __func__, __LINE__);
 266
 267         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 268
 269         /* try to allocate skb first. this one may fail */
 270         skb = netdev_alloc_skb(dev, skb_size +
 271         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 272         if (skb == NULL) {
 273                 vxge_debug_mem(VXGE_ERR,
 274                         "%s: out of memory to allocate SKB", dev->name);
 275                 ring->stats.skb_alloc_fail++;
 276                 return NULL;
 277         }
 278
 279         vxge_debug_mem(VXGE_TRACE,
 280                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 281                 __func__, __LINE__, skb);
 282
 283         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 284
 285         rx_priv->skb = skb;
 286         rx_priv->data_size = skb_size;
 287         vxge_debug_entryexit(VXGE_TRACE,
 288                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 289
 290         return skb;
 291 }
 292
 293 /*
 294  * vxge_rx_map
 295  */
 296 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 297 {
 298         struct vxge_rx_priv *rx_priv;
 299         dma_addr_t dma_addr;
 300
 301         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 302                 ring->ndev->name, __func__, __LINE__);
 303         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 304
 305         dma_addr = pci_map_single(ring->pdev, rx_priv->skb->data,
 306                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 307
 308         if (dma_addr == 0) {
 309                 ring->stats.pci_map_fail++;
 310                 return -EIO;
 311         }
 312         vxge_debug_mem(VXGE_TRACE,
 313                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 314                 ring->ndev->name, __func__, __LINE__,
 315                 (unsigned long long)dma_addr);
 316         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 317
 318         rx_priv->data_dma = dma_addr;
 319         vxge_debug_entryexit(VXGE_TRACE,
 320                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 321
 322         return 0;
 323 }
 324
 325 /*
 326  * vxge_rx_initial_replenish
 327  * Allocation of RxD as an initial replenish procedure.
 328  */
 329 static enum vxge_hw_status
 330 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 331 {
 332         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 333         struct vxge_rx_priv *rx_priv;
 334
 335         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 336                 ring->ndev->name, __func__, __LINE__);
 337         if (vxge_rx_alloc(dtrh, ring,
 338                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 339                 return VXGE_HW_FAIL;
 340
 341         if (vxge_rx_map(dtrh, ring)) {
 342                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 343                 dev_kfree_skb(rx_priv->skb);
 344
 345                 return VXGE_HW_FAIL;
 346         }
 347         vxge_debug_entryexit(VXGE_TRACE,
 348                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 349
 350         return VXGE_HW_OK;
 351 }
 352
 353 static inline void
 354 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 355                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 356 {
 357
 358         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 359                         ring->ndev->name, __func__, __LINE__);
 360         skb_record_rx_queue(skb, ring->driver_id);
 361         skb->protocol = eth_type_trans(skb, ring->ndev);
 362
 363         ring->stats.rx_frms++;
 364         ring->stats.rx_bytes += pkt_length;
 365
 366         if (skb->pkt_type == PACKET_MULTICAST)
 367                 ring->stats.rx_mcast++;
 368
 369         vxge_debug_rx(VXGE_TRACE,
 370                 "%s: %s:%d  skb protocol = %d",
 371                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 372
 373         if (ring->gro_enable) {
 374                 if (ring->vlgrp && ext_info->vlan &&
 375                         (ring->vlan_tag_strip ==
 376                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 377                         vlan_gro_receive(ring->napi_p, ring->vlgrp,
 378                                         ext_info->vlan, skb);
 379                 else
 380                         napi_gro_receive(ring->napi_p, skb);
 381         } else {
 382                 if (ring->vlgrp && vlan &&
 383                         (ring->vlan_tag_strip ==
 384                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 385                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 386                 else
 387                         netif_receive_skb(skb);
 388         }
 389         vxge_debug_entryexit(VXGE_TRACE,
 390                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 391 }
 392
 393 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 394                                     struct vxge_rx_priv *rx_priv)
 395 {
 396         pci_dma_sync_single_for_device(ring->pdev,
 397                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 398
 399         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 400         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 401 }
 402
 403 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 404                              void *post_dtr, struct __vxge_hw_ring *ringh)
 405 {
 406         int dtr_count = *dtr_cnt;
 407         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 408                 if (*first_dtr)
 409                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 410                 *first_dtr = post_dtr;
 411         } else
 412                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 413         dtr_count++;
 414         *dtr_cnt = dtr_count;
 415 }
 416
 417 /*
 418  * vxge_rx_1b_compl
 419  *
 420  * If the interrupt is because of a received frame or if the receive ring
 421  * contains fresh as yet un-processed frames, this function is called.
 422  */
 423 enum vxge_hw_status
 424 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 425                  u8 t_code, void *userdata)
 426 {
 427         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 428         struct  net_device *dev = ring->ndev;
 429         unsigned int dma_sizes;
 430         void *first_dtr = NULL;
 431         int dtr_cnt = 0;
 432         int data_size;
 433         dma_addr_t data_dma;
 434         int pkt_length;
 435         struct sk_buff *skb;
 436         struct vxge_rx_priv *rx_priv;
 437         struct vxge_hw_ring_rxd_info ext_info;
 438         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 439                 ring->ndev->name, __func__, __LINE__);
 440         ring->pkts_processed = 0;
 441
 442         vxge_hw_ring_replenish(ringh, 0);
 443
 444         do {
 445                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 446                 skb = rx_priv->skb;
 447                 data_size = rx_priv->data_size;
 448                 data_dma = rx_priv->data_dma;
 449
 450                 vxge_debug_rx(VXGE_TRACE,
 451                         "%s: %s:%d  skb = 0x%p",
 452                         ring->ndev->name, __func__, __LINE__, skb);
 453
 454                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 455                 pkt_length = dma_sizes;
 456
 457                 pkt_length -= ETH_FCS_LEN;
 458
 459                 vxge_debug_rx(VXGE_TRACE,
 460                         "%s: %s:%d  Packet Length = %d",
 461                         ring->ndev->name, __func__, __LINE__, pkt_length);
 462
 463                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 464
 465                 /* check skb validity */
 466                 vxge_assert(skb);
 467
 468                 prefetch((char *)skb + L1_CACHE_BYTES);
 469                 if (unlikely(t_code)) {
 470
 471                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 472                                 VXGE_HW_OK) {
 473
 474                                 ring->stats.rx_errors++;
 475                                 vxge_debug_rx(VXGE_TRACE,
 476                                         "%s: %s :%d Rx T_code is %d",
 477                                         ring->ndev->name, __func__,
 478                                         __LINE__, t_code);
 479
 480                                 /* If the t_code is not supported and if the
 481                                  * t_code is other than 0x5 (unparseable packet
 482                                  * such as unknown UPV6 header), Drop it !!!
 483                                  */
 484                                 vxge_re_pre_post(dtr, ring, rx_priv);
 485
 486                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 487                                 ring->stats.rx_dropped++;
 488                                 continue;
 489                         }
 490                 }
 491
 492                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 493
 494                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 495
 496                                 if (!vxge_rx_map(dtr, ring)) {
 497                                         skb_put(skb, pkt_length);
 498
 499                                         pci_unmap_single(ring->pdev, data_dma,
 500                                                 data_size, PCI_DMA_FROMDEVICE);
 501
 502                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 503                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 504                                                 ringh);
 505                                 } else {
 506                                         dev_kfree_skb(rx_priv->skb);
 507                                         rx_priv->skb = skb;
 508                                         rx_priv->data_size = data_size;
 509                                         vxge_re_pre_post(dtr, ring, rx_priv);
 510
 511                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 512                                                 ringh);
 513                                         ring->stats.rx_dropped++;
 514                                         break;
 515                                 }
 516                         } else {
 517                                 vxge_re_pre_post(dtr, ring, rx_priv);
 518
 519                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 520                                 ring->stats.rx_dropped++;
 521                                 break;
 522                         }
 523                 } else {
 524                         struct sk_buff *skb_up;
 525
 526                         skb_up = netdev_alloc_skb(dev, pkt_length +
 527                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 528                         if (skb_up != NULL) {
 529                                 skb_reserve(skb_up,
 530                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 531
 532                                 pci_dma_sync_single_for_cpu(ring->pdev,
 533                                         data_dma, data_size,
 534                                         PCI_DMA_FROMDEVICE);
 535
 536                                 vxge_debug_mem(VXGE_TRACE,
 537                                         "%s: %s:%d  skb_up = %p",
 538                                         ring->ndev->name, __func__,
 539                                         __LINE__, skb);
 540                                 memcpy(skb_up->data, skb->data, pkt_length);
 541
 542                                 vxge_re_pre_post(dtr, ring, rx_priv);
 543
 544                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 545                                         ringh);
 546                                 /* will netif_rx small SKB instead */
 547                                 skb = skb_up;
 548                                 skb_put(skb, pkt_length);
 549                         } else {
 550                                 vxge_re_pre_post(dtr, ring, rx_priv);
 551
 552                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 553                                 vxge_debug_rx(VXGE_ERR,
 554                                         "%s: vxge_rx_1b_compl: out of "
 555                                         "memory", dev->name);
 556                                 ring->stats.skb_alloc_fail++;
 557                                 break;
 558                         }
 559                 }
 560
 561                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 562                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 563                     ring->rx_csum && /* Offload Rx side CSUM */
 564                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 565                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 566                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 567                 else
 568                         skb->ip_summed = CHECKSUM_NONE;
 569
 570                 vxge_rx_complete(ring, skb, ext_info.vlan,
 571                         pkt_length, &ext_info);
 572
 573                 ring->budget--;
 574                 ring->pkts_processed++;
 575                 if (!ring->budget)
 576                         break;
 577
 578         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 579                 &t_code) == VXGE_HW_OK);
 580
 581         if (first_dtr)
 582                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 583
 584         dev->last_rx = jiffies;
 585
 586         vxge_debug_entryexit(VXGE_TRACE,
 587                                 "%s:%d  Exiting...",
 588                                 __func__, __LINE__);
 589         return VXGE_HW_OK;
 590 }
 591
 592 /*
 593  * vxge_xmit_compl
 594  *
 595  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 596  * this function is called. It identifies the last TxD whose buffer was
 597  * freed and frees all skbs whose data have already DMA'ed into the NICs
 598  * internal memory.
 599  */
 600 enum vxge_hw_status
 601 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 602                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 603                 void **skb_ptr)
 604 {
 605         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 606         struct sk_buff *skb, *head = NULL;
 607         struct sk_buff **temp;
 608         int pkt_cnt = 0;
 609
 610         vxge_debug_entryexit(VXGE_TRACE,
 611                 "%s:%d Entered....", __func__, __LINE__);
 612
 613         do {
 614                 int frg_cnt;
 615                 skb_frag_t *frag;
 616                 int i = 0, j;
 617                 struct vxge_tx_priv *txd_priv =
 618                         vxge_hw_fifo_txdl_private_get(dtr);
 619
 620                 skb = txd_priv->skb;
 621                 frg_cnt = skb_shinfo(skb)->nr_frags;
 622                 frag = &skb_shinfo(skb)->frags[0];
 623
 624                 vxge_debug_tx(VXGE_TRACE,
 625                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 626                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 627                                 __LINE__, fifo_hw, dtr, t_code);
 628                 /* check skb validity */
 629                 vxge_assert(skb);
 630                 vxge_debug_tx(VXGE_TRACE,
 631                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 632                         fifo->ndev->name, __func__, __LINE__,
 633                         skb, txd_priv, frg_cnt);
 634                 if (unlikely(t_code)) {
 635                         fifo->stats.tx_errors++;
 636                         vxge_debug_tx(VXGE_ERR,
 637                                 "%s: tx: dtr %p completed due to "
 638                                 "error t_code %01x", fifo->ndev->name,
 639                                 dtr, t_code);
 640                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 641                 }
 642
 643                 /*  for unfragmented skb */
 644                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 645                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 646
 647                 for (j = 0; j < frg_cnt; j++) {
 648                         pci_unmap_page(fifo->pdev,
 649                                         txd_priv->dma_buffers[i++],
 650                                         frag->size, PCI_DMA_TODEVICE);
 651                         frag += 1;
 652                 }
 653
 654                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 655
 656                 /* Updating the statistics block */
 657                 fifo->stats.tx_frms++;
 658                 fifo->stats.tx_bytes += skb->len;
 659
 660                 temp = (struct sk_buff **)&skb->cb;
 661                 *temp = head;
 662                 head = skb;
 663
 664                 pkt_cnt++;
 665                 if (pkt_cnt > fifo->indicate_max_pkts)
 666                         break;
 667
 668         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 669                                 &dtr, &t_code) == VXGE_HW_OK);
 670
 671         vxge_wake_tx_queue(fifo, skb);
 672
 673         if (skb_ptr)
 674                 *skb_ptr = (void *) head;
 675
 676         vxge_debug_entryexit(VXGE_TRACE,
 677                                 "%s: %s:%d  Exiting...",
 678                                 fifo->ndev->name, __func__, __LINE__);
 679         return VXGE_HW_OK;
 680 }
 681
 682 /* select a vpath to transmit the packet */
 683 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
 684         int *do_lock)
 685 {
 686         u16 queue_len, counter = 0;
 687         if (skb->protocol == htons(ETH_P_IP)) {
 688                 struct iphdr *ip;
 689                 struct tcphdr *th;
 690
 691                 ip = ip_hdr(skb);
 692
 693                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 694                         th = (struct tcphdr *)(((unsigned char *)ip) +
 695                                         ip->ihl*4);
 696
 697                         queue_len = vdev->no_of_vpath;
 698                         counter = (ntohs(th->source) +
 699                                 ntohs(th->dest)) &
 700                                 vdev->vpath_selector[queue_len - 1];
 701                         if (counter >= queue_len)
 702                                 counter = queue_len - 1;
 703
 704                         if (ip->protocol == IPPROTO_UDP) {
 705 #ifdef NETIF_F_LLTX
 706                                 *do_lock = 0;
 707 #endif
 708                         }
 709                 }
 710         }
 711         return counter;
 712 }
 713
 714 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 715         struct vxge_vpath *vpath, u64 del_mac)
 716 {
 717         struct list_head *entry, *next;
 718         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 719                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 720                         return TRUE;
 721         }
 722         return FALSE;
 723 }
 724
 725 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 726 {
 727         struct macInfo mac_info;
 728         u8 *mac_address = NULL;
 729         u64 mac_addr = 0, vpath_vector = 0;
 730         int vpath_idx = 0;
 731         enum vxge_hw_status status = VXGE_HW_OK;
 732         struct vxge_vpath *vpath = NULL;
 733         struct __vxge_hw_device *hldev;
 734
 735         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
 736
 737         mac_address = (u8 *)&mac_addr;
 738         memcpy(mac_address, mac_header, ETH_ALEN);
 739
 740         /* Is this mac address already in the list? */
 741         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 742                 vpath = &vdev->vpaths[vpath_idx];
 743                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 744                         return vpath_idx;
 745         }
 746
 747         memset(&mac_info, 0, sizeof(struct macInfo));
 748         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 749
 750         /* Any vpath has room to add mac address to its da table? */
 751         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 752                 vpath = &vdev->vpaths[vpath_idx];
 753                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 754                         /* Add this mac address to this vpath */
 755                         mac_info.vpath_no = vpath_idx;
 756                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 757                         status = vxge_add_mac_addr(vdev, &mac_info);
 758                         if (status != VXGE_HW_OK)
 759                                 return -EPERM;
 760                         return vpath_idx;
 761                 }
 762         }
 763
 764         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 765         vpath_idx = 0;
 766         mac_info.vpath_no = vpath_idx;
 767         /* Is the first vpath already selected as catch-basin ? */
 768         vpath = &vdev->vpaths[vpath_idx];
 769         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 770                 /* Add this mac address to this vpath */
 771                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 772                         return -EPERM;
 773                 return vpath_idx;
 774         }
 775
 776         /* Select first vpath as catch-basin */
 777         vpath_vector = vxge_mBIT(vpath->device_id);
 778         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 779                                 vxge_hw_mgmt_reg_type_mrpcim,
 780                                 0,
 781                                 (ulong)offsetof(
 782                                         struct vxge_hw_mrpcim_reg,
 783                                         rts_mgr_cbasin_cfg),
 784                                 vpath_vector);
 785         if (status != VXGE_HW_OK) {
 786                 vxge_debug_tx(VXGE_ERR,
 787                         "%s: Unable to set the vpath-%d in catch-basin mode",
 788                         VXGE_DRIVER_NAME, vpath->device_id);
 789                 return -EPERM;
 790         }
 791
 792         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 793                 return -EPERM;
 794
 795         return vpath_idx;
 796 }
 797
 798 /**
 799  * vxge_xmit
 800  * @skb : the socket buffer containing the Tx data.
 801  * @dev : device pointer.
 802  *
 803  * This function is the Tx entry point of the driver. Neterion NIC supports
 804  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 805  * NOTE: when device cant queue the pkt, just the trans_start variable will
 806  * not be upadted.
 807 */
 808 static int
 809 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 810 {
 811         struct vxge_fifo *fifo = NULL;
 812         void *dtr_priv;
 813         void *dtr = NULL;
 814         struct vxgedev *vdev = NULL;
 815         enum vxge_hw_status status;
 816         int frg_cnt, first_frg_len;
 817         skb_frag_t *frag;
 818         int i = 0, j = 0, avail;
 819         u64 dma_pointer;
 820         struct vxge_tx_priv *txdl_priv = NULL;
 821         struct __vxge_hw_fifo *fifo_hw;
 822         int offload_type;
 823         unsigned long flags = 0;
 824         int vpath_no = 0;
 825         int do_spin_tx_lock = 1;
 826
 827         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 828                         dev->name, __func__, __LINE__);
 829
 830         /* A buffer with no data will be dropped */
 831         if (unlikely(skb->len <= 0)) {
 832                 vxge_debug_tx(VXGE_ERR,
 833                         "%s: Buffer has no data..", dev->name);
 834                 dev_kfree_skb(skb);
 835                 return NETDEV_TX_OK;
 836         }
 837
 838         vdev = (struct vxgedev *)netdev_priv(dev);
 839
 840         if (unlikely(!is_vxge_card_up(vdev))) {
 841                 vxge_debug_tx(VXGE_ERR,
 842                         "%s: vdev not initialized", dev->name);
 843                 dev_kfree_skb(skb);
 844                 return NETDEV_TX_OK;
 845         }
 846
 847         if (vdev->config.addr_learn_en) {
 848                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 849                 if (vpath_no == -EPERM) {
 850                         vxge_debug_tx(VXGE_ERR,
 851                                 "%s: Failed to store the mac address",
 852                                 dev->name);
 853                         dev_kfree_skb(skb);
 854                         return NETDEV_TX_OK;
 855                 }
 856         }
 857
 858         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 859                 vpath_no = skb_get_queue_mapping(skb);
 860         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 861                 vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
 862
 863         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 864
 865         if (vpath_no >= vdev->no_of_vpath)
 866                 vpath_no = 0;
 867
 868         fifo = &vdev->vpaths[vpath_no].fifo;
 869         fifo_hw = fifo->handle;
 870
 871         if (do_spin_tx_lock)
 872                 spin_lock_irqsave(&fifo->tx_lock, flags);
 873         else {
 874                 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
 875                         return NETDEV_TX_LOCKED;
 876         }
 877
 878         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
 879                 if (netif_subqueue_stopped(dev, skb)) {
 880                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 881                         return NETDEV_TX_BUSY;
 882                 }
 883         } else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
 884                 if (netif_queue_stopped(dev)) {
 885                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 886                         return NETDEV_TX_BUSY;
 887                 }
 888         }
 889         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 890         if (avail == 0) {
 891                 vxge_debug_tx(VXGE_ERR,
 892                         "%s: No free TXDs available", dev->name);
 893                 fifo->stats.txd_not_free++;
 894                 vxge_stop_tx_queue(fifo);
 895                 goto _exit2;
 896         }
 897
 898         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 899         if (unlikely(status != VXGE_HW_OK)) {
 900                 vxge_debug_tx(VXGE_ERR,
 901                    "%s: Out of descriptors .", dev->name);
 902                 fifo->stats.txd_out_of_desc++;
 903                 vxge_stop_tx_queue(fifo);
 904                 goto _exit2;
 905         }
 906
 907         vxge_debug_tx(VXGE_TRACE,
 908                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 909                 dev->name, __func__, __LINE__,
 910                 fifo_hw, dtr, dtr_priv);
 911
 912         if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
 913                 u16 vlan_tag = vlan_tx_tag_get(skb);
 914                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 915         }
 916
 917         first_frg_len = skb_headlen(skb);
 918
 919         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 920                                 PCI_DMA_TODEVICE);
 921
 922         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 923                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 924                 vxge_stop_tx_queue(fifo);
 925                 fifo->stats.pci_map_fail++;
 926                 goto _exit2;
 927         }
 928
 929         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 930         txdl_priv->skb = skb;
 931         txdl_priv->dma_buffers[j] = dma_pointer;
 932
 933         frg_cnt = skb_shinfo(skb)->nr_frags;
 934         vxge_debug_tx(VXGE_TRACE,
 935                         "%s: %s:%d skb = %p txdl_priv = %p "
 936                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 937                         __func__, __LINE__, skb, txdl_priv,
 938                         frg_cnt, (unsigned long long)dma_pointer);
 939
 940         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 941                 first_frg_len);
 942
 943         frag = &skb_shinfo(skb)->frags[0];
 944         for (i = 0; i < frg_cnt; i++) {
 945                 /* ignore 0 length fragment */
 946                 if (!frag->size)
 947                         continue;
 948
 949                 dma_pointer =
 950                         (u64)pci_map_page(fifo->pdev, frag->page,
 951                                 frag->page_offset, frag->size,
 952                                 PCI_DMA_TODEVICE);
 953
 954                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 955                         goto _exit0;
 956                 vxge_debug_tx(VXGE_TRACE,
 957                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 958                                 dev->name, __func__, __LINE__, i,
 959                                 (unsigned long long)dma_pointer);
 960
 961                 txdl_priv->dma_buffers[j] = dma_pointer;
 962                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 963                                         frag->size);
 964                 frag += 1;
 965         }
 966
 967         offload_type = vxge_offload_type(skb);
 968
 969         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 970
 971                 int mss = vxge_tcp_mss(skb);
 972                 if (mss) {
 973                         vxge_debug_tx(VXGE_TRACE,
 974                                 "%s: %s:%d mss = %d",
 975                                 dev->name, __func__, __LINE__, mss);
 976                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 977                 } else {
 978                         vxge_assert(skb->len <=
 979                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 980                         vxge_assert(0);
 981                         goto _exit1;
 982                 }
 983         }
 984
 985         if (skb->ip_summed == CHECKSUM_PARTIAL)
 986                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 987                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 988                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 989                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 990
 991         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 992 #ifdef NETIF_F_LLTX
 993         dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
 994 #endif
 995         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 996
 997         VXGE_COMPLETE_VPATH_TX(fifo);
 998         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 999                 dev->name, __func__, __LINE__);
1000         return NETDEV_TX_OK;
1001
1002 _exit0:
1003         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
1004
1005 _exit1:
1006         j = 0;
1007         frag = &skb_shinfo(skb)->frags[0];
1008
1009         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
1010                         skb_headlen(skb), PCI_DMA_TODEVICE);
1011
1012         for (; j < i; j++) {
1013                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
1014                         frag->size, PCI_DMA_TODEVICE);
1015                 frag += 1;
1016         }
1017
1018         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
1019 _exit2:
1020         dev_kfree_skb(skb);
1021         spin_unlock_irqrestore(&fifo->tx_lock, flags);
1022         VXGE_COMPLETE_VPATH_TX(fifo);
1023
1024         return NETDEV_TX_OK;
1025 }
1026
1027 /*
1028  * vxge_rx_term
1029  *
1030  * Function will be called by hw function to abort all outstanding receive
1031  * descriptors.
1032  */
1033 static void
1034 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1035 {
1036         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1037         struct vxge_rx_priv *rx_priv =
1038                 vxge_hw_ring_rxd_private_get(dtrh);
1039
1040         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1041                         ring->ndev->name, __func__, __LINE__);
1042         if (state != VXGE_HW_RXD_STATE_POSTED)
1043                 return;
1044
1045         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1046                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1047
1048         dev_kfree_skb(rx_priv->skb);
1049
1050         vxge_debug_entryexit(VXGE_TRACE,
1051                 "%s: %s:%d  Exiting...",
1052                 ring->ndev->name, __func__, __LINE__);
1053 }
1054
1055 /*
1056  * vxge_tx_term
1057  *
1058  * Function will be called to abort all outstanding tx descriptors
1059  */
1060 static void
1061 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1062 {
1063         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1064         skb_frag_t *frag;
1065         int i = 0, j, frg_cnt;
1066         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1067         struct sk_buff *skb = txd_priv->skb;
1068
1069         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1070
1071         if (state != VXGE_HW_TXDL_STATE_POSTED)
1072                 return;
1073
1074         /* check skb validity */
1075         vxge_assert(skb);
1076         frg_cnt = skb_shinfo(skb)->nr_frags;
1077         frag = &skb_shinfo(skb)->frags[0];
1078
1079         /*  for unfragmented skb */
1080         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1081                 skb_headlen(skb), PCI_DMA_TODEVICE);
1082
1083         for (j = 0; j < frg_cnt; j++) {
1084                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1085                                frag->size, PCI_DMA_TODEVICE);
1086                 frag += 1;
1087         }
1088
1089         dev_kfree_skb(skb);
1090
1091         vxge_debug_entryexit(VXGE_TRACE,
1092                 "%s:%d  Exiting...", __func__, __LINE__);
1093 }
1094
1095 /**
1096  * vxge_set_multicast
1097  * @dev: pointer to the device structure
1098  *
1099  * Entry point for multicast address enable/disable
1100  * This function is a driver entry point which gets called by the kernel
1101  * whenever multicast addresses must be enabled/disabled. This also gets
1102  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1103  * determine, if multicast address must be enabled or if promiscuous mode
1104  * is to be disabled etc.
1105  */
1106 static void vxge_set_multicast(struct net_device *dev)
1107 {
1108         struct dev_mc_list *mclist;
1109         struct vxgedev *vdev;
1110         int i, mcast_cnt = 0;
1111         struct __vxge_hw_device  *hldev;
1112         enum vxge_hw_status status = VXGE_HW_OK;
1113         struct macInfo mac_info;
1114         int vpath_idx = 0;
1115         struct vxge_mac_addrs *mac_entry;
1116         struct list_head *list_head;
1117         struct list_head *entry, *next;
1118         u8 *mac_address = NULL;
1119
1120         vxge_debug_entryexit(VXGE_TRACE,
1121                 "%s:%d", __func__, __LINE__);
1122
1123         vdev = (struct vxgedev *)netdev_priv(dev);
1124         hldev = (struct __vxge_hw_device  *)vdev->devh;
1125
1126         if (unlikely(!is_vxge_card_up(vdev)))
1127                 return;
1128
1129         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1130                 for (i = 0; i < vdev->no_of_vpath; i++) {
1131                         vxge_assert(vdev->vpaths[i].is_open);
1132                         status = vxge_hw_vpath_mcast_enable(
1133                                                 vdev->vpaths[i].handle);
1134                         vdev->all_multi_flg = 1;
1135                 }
1136         } else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1137                 for (i = 0; i < vdev->no_of_vpath; i++) {
1138                         vxge_assert(vdev->vpaths[i].is_open);
1139                         status = vxge_hw_vpath_mcast_disable(
1140                                                 vdev->vpaths[i].handle);
1141                         vdev->all_multi_flg = 1;
1142                 }
1143         }
1144
1145         if (status != VXGE_HW_OK)
1146                 vxge_debug_init(VXGE_ERR,
1147                         "failed to %s multicast, status %d",
1148                         dev->flags & IFF_ALLMULTI ?
1149                         "enable" : "disable", status);
1150
1151         if (!vdev->config.addr_learn_en) {
1152                 if (dev->flags & IFF_PROMISC) {
1153                         for (i = 0; i < vdev->no_of_vpath; i++) {
1154                                 vxge_assert(vdev->vpaths[i].is_open);
1155                                 status = vxge_hw_vpath_promisc_enable(
1156                                                 vdev->vpaths[i].handle);
1157                         }
1158                 } else {
1159                         for (i = 0; i < vdev->no_of_vpath; i++) {
1160                                 vxge_assert(vdev->vpaths[i].is_open);
1161                                 status = vxge_hw_vpath_promisc_disable(
1162                                                 vdev->vpaths[i].handle);
1163                         }
1164                 }
1165         }
1166
1167         memset(&mac_info, 0, sizeof(struct macInfo));
1168         /* Update individual M_CAST address list */
1169         if ((!vdev->all_multi_flg) && dev->mc_count) {
1170
1171                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1172                 list_head = &vdev->vpaths[0].mac_addr_list;
1173                 if ((dev->mc_count +
1174                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1175                                 vdev->vpaths[0].max_mac_addr_cnt)
1176                         goto _set_all_mcast;
1177
1178                 /* Delete previous MC's */
1179                 for (i = 0; i < mcast_cnt; i++) {
1180                         if (!list_empty(list_head))
1181                                 mac_entry = (struct vxge_mac_addrs *)
1182                                         list_first_entry(list_head,
1183                                                 struct vxge_mac_addrs,
1184                                                 item);
1185
1186                         list_for_each_safe(entry, next, list_head) {
1187
1188                                 mac_entry = (struct vxge_mac_addrs *) entry;
1189                                 /* Copy the mac address to delete */
1190                                 mac_address = (u8 *)&mac_entry->macaddr;
1191                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1192
1193                                 /* Is this a multicast address */
1194                                 if (0x01 & mac_info.macaddr[0]) {
1195                                         for (vpath_idx = 0; vpath_idx <
1196                                                 vdev->no_of_vpath;
1197                                                 vpath_idx++) {
1198                                                 mac_info.vpath_no = vpath_idx;
1199                                                 status = vxge_del_mac_addr(
1200                                                                 vdev,
1201                                                                 &mac_info);
1202                                         }
1203                                 }
1204                         }
1205                 }
1206
1207                 /* Add new ones */
1208                 for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
1209                         i++, mclist = mclist->next) {
1210
1211                         memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
1212                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1213                                         vpath_idx++) {
1214                                 mac_info.vpath_no = vpath_idx;
1215                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1216                                 status = vxge_add_mac_addr(vdev, &mac_info);
1217                                 if (status != VXGE_HW_OK) {
1218                                         vxge_debug_init(VXGE_ERR,
1219                                                 "%s:%d Setting individual"
1220                                                 "multicast address failed",
1221                                                 __func__, __LINE__);
1222                                         goto _set_all_mcast;
1223                                 }
1224                         }
1225                 }
1226
1227                 return;
1228 _set_all_mcast:
1229                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1230                 /* Delete previous MC's */
1231                 for (i = 0; i < mcast_cnt; i++) {
1232
1233                         list_for_each_safe(entry, next, list_head) {
1234
1235                                 mac_entry = (struct vxge_mac_addrs *) entry;
1236                                 /* Copy the mac address to delete */
1237                                 mac_address = (u8 *)&mac_entry->macaddr;
1238                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1239
1240                                 /* Is this a multicast address */
1241                                 if (0x01 & mac_info.macaddr[0])
1242                                         break;
1243                         }
1244
1245                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1246                                         vpath_idx++) {
1247                                 mac_info.vpath_no = vpath_idx;
1248                                 status = vxge_del_mac_addr(vdev, &mac_info);
1249                         }
1250                 }
1251
1252                 /* Enable all multicast */
1253                 for (i = 0; i < vdev->no_of_vpath; i++) {
1254                         vxge_assert(vdev->vpaths[i].is_open);
1255                         status = vxge_hw_vpath_mcast_enable(
1256                                                 vdev->vpaths[i].handle);
1257                         if (status != VXGE_HW_OK) {
1258                                 vxge_debug_init(VXGE_ERR,
1259                                         "%s:%d Enabling all multicasts failed",
1260                                          __func__, __LINE__);
1261                         }
1262                         vdev->all_multi_flg = 1;
1263                 }
1264                 dev->flags |= IFF_ALLMULTI;
1265         }
1266
1267         vxge_debug_entryexit(VXGE_TRACE,
1268                 "%s:%d  Exiting...", __func__, __LINE__);
1269 }
1270
1271 /**
1272  * vxge_set_mac_addr
1273  * @dev: pointer to the device structure
1274  *
1275  * Update entry "0" (default MAC addr)
1276  */
1277 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1278 {
1279         struct sockaddr *addr = p;
1280         struct vxgedev *vdev;
1281         struct __vxge_hw_device  *hldev;
1282         enum vxge_hw_status status = VXGE_HW_OK;
1283         struct macInfo mac_info_new, mac_info_old;
1284         int vpath_idx = 0;
1285
1286         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1287
1288         vdev = (struct vxgedev *)netdev_priv(dev);
1289         hldev = vdev->devh;
1290
1291         if (!is_valid_ether_addr(addr->sa_data))
1292                 return -EINVAL;
1293
1294         memset(&mac_info_new, 0, sizeof(struct macInfo));
1295         memset(&mac_info_old, 0, sizeof(struct macInfo));
1296
1297         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1298                 __func__, __LINE__);
1299
1300         /* Get the old address */
1301         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1302
1303         /* Copy the new address */
1304         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1305
1306         /* First delete the old mac address from all the vpaths
1307         as we can't specify the index while adding new mac address */
1308         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1309                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1310                 if (!vpath->is_open) {
1311                         /* This can happen when this interface is added/removed
1312                         to the bonding interface. Delete this station address
1313                         from the linked list */
1314                         vxge_mac_list_del(vpath, &mac_info_old);
1315
1316                         /* Add this new address to the linked list
1317                         for later restoring */
1318                         vxge_mac_list_add(vpath, &mac_info_new);
1319
1320                         continue;
1321                 }
1322                 /* Delete the station address */
1323                 mac_info_old.vpath_no = vpath_idx;
1324                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1325         }
1326
1327         if (unlikely(!is_vxge_card_up(vdev))) {
1328                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1329                 return VXGE_HW_OK;
1330         }
1331
1332         /* Set this mac address to all the vpaths */
1333         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1334                 mac_info_new.vpath_no = vpath_idx;
1335                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1336                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1337                 if (status != VXGE_HW_OK)
1338                         return -EINVAL;
1339         }
1340
1341         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1342
1343         return status;
1344 }
1345
1346 /*
1347  * vxge_vpath_intr_enable
1348  * @vdev: pointer to vdev
1349  * @vp_id: vpath for which to enable the interrupts
1350  *
1351  * Enables the interrupts for the vpath
1352 */
1353 void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1354 {
1355         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1356         int msix_id, alarm_msix_id;
1357         int tim_msix_id[4] = {[0 ...3] = 0};
1358
1359         vxge_hw_vpath_intr_enable(vpath->handle);
1360
1361         if (vdev->config.intr_type == INTA)
1362                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1363         else {
1364                 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1365                 alarm_msix_id =
1366                         VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1367
1368                 tim_msix_id[0] = msix_id;
1369                 tim_msix_id[1] = msix_id + 1;
1370                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1371                         alarm_msix_id);
1372
1373                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1374                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1375
1376                 /* enable the alarm vector */
1377                 vxge_hw_vpath_msix_unmask(vpath->handle, alarm_msix_id);
1378         }
1379 }
1380
1381 /*
1382  * vxge_vpath_intr_disable
1383  * @vdev: pointer to vdev
1384  * @vp_id: vpath for which to disable the interrupts
1385  *
1386  * Disables the interrupts for the vpath
1387 */
1388 void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1389 {
1390         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1391         int msix_id;
1392
1393         vxge_hw_vpath_intr_disable(vpath->handle);
1394
1395         if (vdev->config.intr_type == INTA)
1396                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1397         else {
1398                 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1399                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1400                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1401
1402                 /* disable the alarm vector */
1403                 msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1404                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1405         }
1406 }
1407
1408 /*
1409  * vxge_reset_vpath
1410  * @vdev: pointer to vdev
1411  * @vp_id: vpath to reset
1412  *
1413  * Resets the vpath
1414 */
1415 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1416 {
1417         enum vxge_hw_status status = VXGE_HW_OK;
1418         int ret = 0;
1419
1420         /* check if device is down already */
1421         if (unlikely(!is_vxge_card_up(vdev)))
1422                 return 0;
1423
1424         /* is device reset already scheduled */
1425         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1426                 return 0;
1427
1428         if (vdev->vpaths[vp_id].handle) {
1429                 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1430                                 == VXGE_HW_OK) {
1431                         if (is_vxge_card_up(vdev) &&
1432                                 vxge_hw_vpath_recover_from_reset(
1433                                         vdev->vpaths[vp_id].handle)
1434                                         != VXGE_HW_OK) {
1435                                 vxge_debug_init(VXGE_ERR,
1436                                         "vxge_hw_vpath_recover_from_reset"
1437                                         "failed for vpath:%d", vp_id);
1438                                 return status;
1439                         }
1440                 } else {
1441                         vxge_debug_init(VXGE_ERR,
1442                                 "vxge_hw_vpath_reset failed for"
1443                                 "vpath:%d", vp_id);
1444                                 return status;
1445                 }
1446         } else
1447                 return VXGE_HW_FAIL;
1448
1449         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1450         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1451
1452         /* Enable all broadcast */
1453         vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1454
1455         /* Enable the interrupts */
1456         vxge_vpath_intr_enable(vdev, vp_id);
1457
1458         smp_wmb();
1459
1460         /* Enable the flow of traffic through the vpath */
1461         vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1462
1463         smp_wmb();
1464         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1465         vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1466
1467         /* Vpath reset done */
1468         clear_bit(vp_id, &vdev->vp_reset);
1469
1470         /* Start the vpath queue */
1471         vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1472
1473         return ret;
1474 }
1475
1476 static int do_vxge_reset(struct vxgedev *vdev, int event)
1477 {
1478         enum vxge_hw_status status;
1479         int ret = 0, vp_id, i;
1480
1481         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1482
1483         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1484                 /* check if device is down already */
1485                 if (unlikely(!is_vxge_card_up(vdev)))
1486                         return 0;
1487
1488                 /* is reset already scheduled */
1489                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1490                         return 0;
1491         }
1492
1493         if (event == VXGE_LL_FULL_RESET) {
1494                 /* wait for all the vpath reset to complete */
1495                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1496                         while (test_bit(vp_id, &vdev->vp_reset))
1497                                 msleep(50);
1498                 }
1499
1500                 /* if execution mode is set to debug, don't reset the adapter */
1501                 if (unlikely(vdev->exec_mode)) {
1502                         vxge_debug_init(VXGE_ERR,
1503                                 "%s: execution mode is debug, returning..",
1504                                 vdev->ndev->name);
1505                 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1506                 vxge_stop_all_tx_queue(vdev);
1507                 return 0;
1508                 }
1509         }
1510
1511         if (event == VXGE_LL_FULL_RESET) {
1512                 vxge_hw_device_intr_disable(vdev->devh);
1513
1514                 switch (vdev->cric_err_event) {
1515                 case VXGE_HW_EVENT_UNKNOWN:
1516                         vxge_stop_all_tx_queue(vdev);
1517                         vxge_debug_init(VXGE_ERR,
1518                                 "fatal: %s: Disabling device due to"
1519                                 "unknown error",
1520                                 vdev->ndev->name);
1521                         ret = -EPERM;
1522                         goto out;
1523                 case VXGE_HW_EVENT_RESET_START:
1524                         break;
1525                 case VXGE_HW_EVENT_RESET_COMPLETE:
1526                 case VXGE_HW_EVENT_LINK_DOWN:
1527                 case VXGE_HW_EVENT_LINK_UP:
1528                 case VXGE_HW_EVENT_ALARM_CLEARED:
1529                 case VXGE_HW_EVENT_ECCERR:
1530                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1531                         ret = -EPERM;
1532                         goto out;
1533                 case VXGE_HW_EVENT_FIFO_ERR:
1534                 case VXGE_HW_EVENT_VPATH_ERR:
1535                         break;
1536                 case VXGE_HW_EVENT_CRITICAL_ERR:
1537                         vxge_stop_all_tx_queue(vdev);
1538                         vxge_debug_init(VXGE_ERR,
1539                                 "fatal: %s: Disabling device due to"
1540                                 "serious error",
1541                                 vdev->ndev->name);
1542                         /* SOP or device reset required */
1543                         /* This event is not currently used */
1544                         ret = -EPERM;
1545                         goto out;
1546                 case VXGE_HW_EVENT_SERR:
1547                         vxge_stop_all_tx_queue(vdev);
1548                         vxge_debug_init(VXGE_ERR,
1549                                 "fatal: %s: Disabling device due to"
1550                                 "serious error",
1551                                 vdev->ndev->name);
1552                         ret = -EPERM;
1553                         goto out;
1554                 case VXGE_HW_EVENT_SRPCIM_SERR:
1555                 case VXGE_HW_EVENT_MRPCIM_SERR:
1556                         ret = -EPERM;
1557                         goto out;
1558                 case VXGE_HW_EVENT_SLOT_FREEZE:
1559                         vxge_stop_all_tx_queue(vdev);
1560                         vxge_debug_init(VXGE_ERR,
1561                                 "fatal: %s: Disabling device due to"
1562                                 "slot freeze",
1563                                 vdev->ndev->name);
1564                         ret = -EPERM;
1565                         goto out;
1566                 default:
1567                         break;
1568
1569                 }
1570         }
1571
1572         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1573                 vxge_stop_all_tx_queue(vdev);
1574
1575         if (event == VXGE_LL_FULL_RESET) {
1576                 status = vxge_reset_all_vpaths(vdev);
1577                 if (status != VXGE_HW_OK) {
1578                         vxge_debug_init(VXGE_ERR,
1579                                 "fatal: %s: can not reset vpaths",
1580                                 vdev->ndev->name);
1581                         ret = -EPERM;
1582                         goto out;
1583                 }
1584         }
1585
1586         if (event == VXGE_LL_COMPL_RESET) {
1587                 for (i = 0; i < vdev->no_of_vpath; i++)
1588                         if (vdev->vpaths[i].handle) {
1589                                 if (vxge_hw_vpath_recover_from_reset(
1590                                         vdev->vpaths[i].handle)
1591                                                 != VXGE_HW_OK) {
1592                                         vxge_debug_init(VXGE_ERR,
1593                                                 "vxge_hw_vpath_recover_"
1594                                                 "from_reset failed for vpath: "
1595                                                 "%d", i);
1596                                         ret = -EPERM;
1597                                         goto out;
1598                                 }
1599                                 } else {
1600                                         vxge_debug_init(VXGE_ERR,
1601                                         "vxge_hw_vpath_reset failed for "
1602                                                 "vpath:%d", i);
1603                                         ret = -EPERM;
1604                                         goto out;
1605                                 }
1606         }
1607
1608         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1609                 /* Reprogram the DA table with populated mac addresses */
1610                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1611                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1612                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1613                 }
1614
1615                 /* enable vpath interrupts */
1616                 for (i = 0; i < vdev->no_of_vpath; i++)
1617                         vxge_vpath_intr_enable(vdev, i);
1618
1619                 vxge_hw_device_intr_enable(vdev->devh);
1620
1621                 smp_wmb();
1622
1623                 /* Indicate card up */
1624                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1625
1626                 /* Get the traffic to flow through the vpaths */
1627                 for (i = 0; i < vdev->no_of_vpath; i++) {
1628                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1629                         smp_wmb();
1630                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1631                 }
1632
1633                 vxge_wake_all_tx_queue(vdev);
1634         }
1635
1636 out:
1637         vxge_debug_entryexit(VXGE_TRACE,
1638                 "%s:%d  Exiting...", __func__, __LINE__);
1639
1640         /* Indicate reset done */
1641         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1642                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1643         return ret;
1644 }
1645
1646 /*
1647  * vxge_reset
1648  * @vdev: pointer to ll device
1649  *
1650  * driver may reset the chip on events of serr, eccerr, etc
1651  */
1652 int vxge_reset(struct vxgedev *vdev)
1653 {
1654         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1655         return 0;
1656 }
1657
1658 /**
1659  * vxge_poll - Receive handler when Receive Polling is used.
1660  * @dev: pointer to the device structure.
1661  * @budget: Number of packets budgeted to be processed in this iteration.
1662  *
1663  * This function comes into picture only if Receive side is being handled
1664  * through polling (called NAPI in linux). It mostly does what the normal
1665  * Rx interrupt handler does in terms of descriptor and packet processing
1666  * but not in an interrupt context. Also it will process a specified number
1667  * of packets at most in one iteration. This value is passed down by the
1668  * kernel as the function argument 'budget'.
1669  */
1670 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1671 {
1672         struct vxge_ring *ring =
1673                 container_of(napi, struct vxge_ring, napi);
1674         int budget_org = budget;
1675         ring->budget = budget;
1676
1677         vxge_hw_vpath_poll_rx(ring->handle);
1678
1679         if (ring->pkts_processed < budget_org) {
1680                 napi_complete(napi);
1681                 /* Re enable the Rx interrupts for the vpath */
1682                 vxge_hw_channel_msix_unmask(
1683                                 (struct __vxge_hw_channel *)ring->handle,
1684                                 ring->rx_vector_no);
1685         }
1686
1687         return ring->pkts_processed;
1688 }
1689
1690 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1691 {
1692         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1693         int pkts_processed = 0;
1694         int i;
1695         int budget_org = budget;
1696         struct vxge_ring *ring;
1697
1698         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1699                 pci_get_drvdata(vdev->pdev);
1700
1701         for (i = 0; i < vdev->no_of_vpath; i++) {
1702                 ring = &vdev->vpaths[i].ring;
1703                 ring->budget = budget;
1704                 vxge_hw_vpath_poll_rx(ring->handle);
1705                 pkts_processed += ring->pkts_processed;
1706                 budget -= ring->pkts_processed;
1707                 if (budget <= 0)
1708                         break;
1709         }
1710
1711         VXGE_COMPLETE_ALL_TX(vdev);
1712
1713         if (pkts_processed < budget_org) {
1714                 napi_complete(napi);
1715                 /* Re enable the Rx interrupts for the ring */
1716                 vxge_hw_device_unmask_all(hldev);
1717                 vxge_hw_device_flush_io(hldev);
1718         }
1719
1720         return pkts_processed;
1721 }
1722
1723 #ifdef CONFIG_NET_POLL_CONTROLLER
1724 /**
1725  * vxge_netpoll - netpoll event handler entry point
1726  * @dev : pointer to the device structure.
1727  * Description:
1728  *      This function will be called by upper layer to check for events on the
1729  * interface in situations where interrupts are disabled. It is used for
1730  * specific in-kernel networking tasks, such as remote consoles and kernel
1731  * debugging over the network (example netdump in RedHat).
1732  */
1733 static void vxge_netpoll(struct net_device *dev)
1734 {
1735         struct __vxge_hw_device  *hldev;
1736         struct vxgedev *vdev;
1737
1738         vdev = (struct vxgedev *)netdev_priv(dev);
1739         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1740
1741         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1742
1743         if (pci_channel_offline(vdev->pdev))
1744                 return;
1745
1746         disable_irq(dev->irq);
1747         vxge_hw_device_clear_tx_rx(hldev);
1748
1749         vxge_hw_device_clear_tx_rx(hldev);
1750         VXGE_COMPLETE_ALL_RX(vdev);
1751         VXGE_COMPLETE_ALL_TX(vdev);
1752
1753         enable_irq(dev->irq);
1754
1755         vxge_debug_entryexit(VXGE_TRACE,
1756                 "%s:%d  Exiting...", __func__, __LINE__);
1757         return;
1758 }
1759 #endif
1760
1761 /* RTH configuration */
1762 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1763 {
1764         enum vxge_hw_status status = VXGE_HW_OK;
1765         struct vxge_hw_rth_hash_types hash_types;
1766         u8 itable[256] = {0}; /* indirection table */
1767         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1768         int index;
1769
1770         /*
1771          * Filling
1772          *      - itable with bucket numbers
1773          *      - mtable with bucket-to-vpath mapping
1774          */
1775         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1776                 itable[index] = index;
1777                 mtable[index] = index % vdev->no_of_vpath;
1778         }
1779
1780         /* Fill RTH hash types */
1781         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1782         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1783         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1784         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1785         hash_types.hash_type_tcpipv6ex_en =
1786                                         vdev->config.rth_hash_type_tcpipv6ex;
1787         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1788
1789         /* set indirection table, bucket-to-vpath mapping */
1790         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1791                                                 vdev->no_of_vpath,
1792                                                 mtable, itable,
1793                                                 vdev->config.rth_bkt_sz);
1794         if (status != VXGE_HW_OK) {
1795                 vxge_debug_init(VXGE_ERR,
1796                         "RTH indirection table configuration failed "
1797                         "for vpath:%d", vdev->vpaths[0].device_id);
1798                 return status;
1799         }
1800
1801         /*
1802         * Because the itable_set() method uses the active_table field
1803         * for the target virtual path the RTH config should be updated
1804         * for all VPATHs. The h/w only uses the lowest numbered VPATH
1805         * when steering frames.
1806         */
1807          for (index = 0; index < vdev->no_of_vpath; index++) {
1808                 status = vxge_hw_vpath_rts_rth_set(
1809                                 vdev->vpaths[index].handle,
1810                                 vdev->config.rth_algorithm,
1811                                 &hash_types,
1812                                 vdev->config.rth_bkt_sz);
1813
1814                  if (status != VXGE_HW_OK) {
1815                         vxge_debug_init(VXGE_ERR,
1816                                 "RTH configuration failed for vpath:%d",
1817                                 vdev->vpaths[index].device_id);
1818                         return status;
1819                  }
1820          }
1821
1822         return status;
1823 }
1824
1825 int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1826 {
1827         struct vxge_mac_addrs *new_mac_entry;
1828         u8 *mac_address = NULL;
1829
1830         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1831                 return TRUE;
1832
1833         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1834         if (!new_mac_entry) {
1835                 vxge_debug_mem(VXGE_ERR,
1836                         "%s: memory allocation failed",
1837                         VXGE_DRIVER_NAME);
1838                 return FALSE;
1839         }
1840
1841         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1842
1843         /* Copy the new mac address to the list */
1844         mac_address = (u8 *)&new_mac_entry->macaddr;
1845         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1846
1847         new_mac_entry->state = mac->state;
1848         vpath->mac_addr_cnt++;
1849
1850         /* Is this a multicast address */
1851         if (0x01 & mac->macaddr[0])
1852                 vpath->mcast_addr_cnt++;
1853
1854         return TRUE;
1855 }
1856
1857 /* Add a mac address to DA table */
1858 enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1859 {
1860         enum vxge_hw_status status = VXGE_HW_OK;
1861         struct vxge_vpath *vpath;
1862         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1863
1864         if (0x01 & mac->macaddr[0]) /* multicast address */
1865                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1866         else
1867                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1868
1869         vpath = &vdev->vpaths[mac->vpath_no];
1870         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1871                                                 mac->macmask, duplicate_mode);
1872         if (status != VXGE_HW_OK) {
1873                 vxge_debug_init(VXGE_ERR,
1874                         "DA config add entry failed for vpath:%d",
1875                         vpath->device_id);
1876         } else
1877                 if (FALSE == vxge_mac_list_add(vpath, mac))
1878                         status = -EPERM;
1879
1880         return status;
1881 }
1882
1883 int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1884 {
1885         struct list_head *entry, *next;
1886         u64 del_mac = 0;
1887         u8 *mac_address = (u8 *) (&del_mac);
1888
1889         /* Copy the mac address to delete from the list */
1890         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1891
1892         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1893                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1894                         list_del(entry);
1895                         kfree((struct vxge_mac_addrs *)entry);
1896                         vpath->mac_addr_cnt--;
1897
1898                         /* Is this a multicast address */
1899                         if (0x01 & mac->macaddr[0])
1900                                 vpath->mcast_addr_cnt--;
1901                         return TRUE;
1902                 }
1903         }
1904
1905         return FALSE;
1906 }
1907 /* delete a mac address from DA table */
1908 enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1909 {
1910         enum vxge_hw_status status = VXGE_HW_OK;
1911         struct vxge_vpath *vpath;
1912
1913         vpath = &vdev->vpaths[mac->vpath_no];
1914         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1915                                                 mac->macmask);
1916         if (status != VXGE_HW_OK) {
1917                 vxge_debug_init(VXGE_ERR,
1918                         "DA config delete entry failed for vpath:%d",
1919                         vpath->device_id);
1920         } else
1921                 vxge_mac_list_del(vpath, mac);
1922         return status;
1923 }
1924
1925 /* list all mac addresses from DA table */
1926 enum vxge_hw_status
1927 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1928                                         struct macInfo *mac)
1929 {
1930         enum vxge_hw_status status = VXGE_HW_OK;
1931         unsigned char macmask[ETH_ALEN];
1932         unsigned char macaddr[ETH_ALEN];
1933
1934         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1935                                 macaddr, macmask);
1936         if (status != VXGE_HW_OK) {
1937                 vxge_debug_init(VXGE_ERR,
1938                         "DA config list entry failed for vpath:%d",
1939                         vpath->device_id);
1940                 return status;
1941         }
1942
1943         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1944
1945                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1946                                 macaddr, macmask);
1947                 if (status != VXGE_HW_OK)
1948                         break;
1949         }
1950
1951         return status;
1952 }
1953
1954 /* Store all vlan ids from the list to the vid table */
1955 enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1956 {
1957         enum vxge_hw_status status = VXGE_HW_OK;
1958         struct vxgedev *vdev = vpath->vdev;
1959         u16 vid;
1960
1961         if (vdev->vlgrp && vpath->is_open) {
1962
1963                 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1964                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1965                                 continue;
1966                         /* Add these vlan to the vid table */
1967                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1968                 }
1969         }
1970
1971         return status;
1972 }
1973
1974 /* Store all mac addresses from the list to the DA table */
1975 enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1976 {
1977         enum vxge_hw_status status = VXGE_HW_OK;
1978         struct macInfo mac_info;
1979         u8 *mac_address = NULL;
1980         struct list_head *entry, *next;
1981
1982         memset(&mac_info, 0, sizeof(struct macInfo));
1983
1984         if (vpath->is_open) {
1985
1986                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1987                         mac_address =
1988                                 (u8 *)&
1989                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1990                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1991                         ((struct vxge_mac_addrs *)entry)->state =
1992                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1993                         /* does this mac address already exist in da table? */
1994                         status = vxge_search_mac_addr_in_da_table(vpath,
1995                                 &mac_info);
1996                         if (status != VXGE_HW_OK) {
1997                                 /* Add this mac address to the DA table */
1998                                 status = vxge_hw_vpath_mac_addr_add(
1999                                         vpath->handle, mac_info.macaddr,
2000                                         mac_info.macmask,
2001                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
2002                                 if (status != VXGE_HW_OK) {
2003                                         vxge_debug_init(VXGE_ERR,
2004                                             "DA add entry failed for vpath:%d",
2005                                             vpath->device_id);
2006                                         ((struct vxge_mac_addrs *)entry)->state
2007                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
2008                                 }
2009                         }
2010                 }
2011         }
2012
2013         return status;
2014 }
2015
2016 /* reset vpaths */
2017 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
2018 {
2019         int i;
2020         enum vxge_hw_status status = VXGE_HW_OK;
2021
2022         for (i = 0; i < vdev->no_of_vpath; i++)
2023                 if (vdev->vpaths[i].handle) {
2024                         if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
2025                                         == VXGE_HW_OK) {
2026                                 if (is_vxge_card_up(vdev) &&
2027                                         vxge_hw_vpath_recover_from_reset(
2028                                                 vdev->vpaths[i].handle)
2029                                                 != VXGE_HW_OK) {
2030                                         vxge_debug_init(VXGE_ERR,
2031                                                 "vxge_hw_vpath_recover_"
2032                                                 "from_reset failed for vpath: "
2033                                                 "%d", i);
2034                                         return status;
2035                                 }
2036                         } else {
2037                                 vxge_debug_init(VXGE_ERR,
2038                                         "vxge_hw_vpath_reset failed for "
2039                                         "vpath:%d", i);
2040                                         return status;
2041                         }
2042                 }
2043         return status;
2044 }
2045
2046 /* close vpaths */
2047 void vxge_close_vpaths(struct vxgedev *vdev, int index)
2048 {
2049         int i;
2050         for (i = index; i < vdev->no_of_vpath; i++) {
2051                 if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
2052                         vxge_hw_vpath_close(vdev->vpaths[i].handle);
2053                         vdev->stats.vpaths_open--;
2054                 }
2055                 vdev->vpaths[i].is_open = 0;
2056                 vdev->vpaths[i].handle  = NULL;
2057         }
2058 }
2059
2060 /* open vpaths */
2061 int vxge_open_vpaths(struct vxgedev *vdev)
2062 {
2063         enum vxge_hw_status status;
2064         int i;
2065         u32 vp_id = 0;
2066         struct vxge_hw_vpath_attr attr;
2067
2068         for (i = 0; i < vdev->no_of_vpath; i++) {
2069                 vxge_assert(vdev->vpaths[i].is_configured);
2070                 attr.vp_id = vdev->vpaths[i].device_id;
2071                 attr.fifo_attr.callback = vxge_xmit_compl;
2072                 attr.fifo_attr.txdl_term = vxge_tx_term;
2073                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2074                 attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
2075
2076                 attr.ring_attr.callback = vxge_rx_1b_compl;
2077                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2078                 attr.ring_attr.rxd_term = vxge_rx_term;
2079                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2080                 attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
2081
2082                 vdev->vpaths[i].ring.ndev = vdev->ndev;
2083                 vdev->vpaths[i].ring.pdev = vdev->pdev;
2084                 status = vxge_hw_vpath_open(vdev->devh, &attr,
2085                                 &(vdev->vpaths[i].handle));
2086                 if (status == VXGE_HW_OK) {
2087                         vdev->vpaths[i].fifo.handle =
2088                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2089                         vdev->vpaths[i].ring.handle =
2090                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2091                         vdev->vpaths[i].fifo.tx_steering_type =
2092                                 vdev->config.tx_steering_type;
2093                         vdev->vpaths[i].fifo.ndev = vdev->ndev;
2094                         vdev->vpaths[i].fifo.pdev = vdev->pdev;
2095                         vdev->vpaths[i].fifo.indicate_max_pkts =
2096                                 vdev->config.fifo_indicate_max_pkts;
2097                         vdev->vpaths[i].ring.rx_vector_no = 0;
2098                         vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
2099                         vdev->vpaths[i].is_open = 1;
2100                         vdev->vp_handles[i] = vdev->vpaths[i].handle;
2101                         vdev->vpaths[i].ring.gro_enable =
2102                                                 vdev->config.gro_enable;
2103                         vdev->vpaths[i].ring.vlan_tag_strip =
2104                                                 vdev->vlan_tag_strip;
2105                         vdev->stats.vpaths_open++;
2106                 } else {
2107                         vdev->stats.vpath_open_fail++;
2108                         vxge_debug_init(VXGE_ERR,
2109                                 "%s: vpath: %d failed to open "
2110                                 "with status: %d",
2111                             vdev->ndev->name, vdev->vpaths[i].device_id,
2112                                 status);
2113                         vxge_close_vpaths(vdev, 0);
2114                         return -EPERM;
2115                 }
2116
2117                 vp_id =
2118                   ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
2119                   vpath->vp_id;
2120                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2121         }
2122         return VXGE_HW_OK;
2123 }
2124
2125 /*
2126  *  vxge_isr_napi
2127  *  @irq: the irq of the device.
2128  *  @dev_id: a void pointer to the hldev structure of the Titan device
2129  *  @ptregs: pointer to the registers pushed on the stack.
2130  *
2131  *  This function is the ISR handler of the device when napi is enabled. It
2132  *  identifies the reason for the interrupt and calls the relevant service
2133  *  routines.
2134  */
2135 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2136 {
2137         struct net_device *dev;
2138         struct __vxge_hw_device *hldev;
2139         u64 reason;
2140         enum vxge_hw_status status;
2141         struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2142
2143         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2144
2145         dev = vdev->ndev;
2146         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2147
2148         if (pci_channel_offline(vdev->pdev))
2149                 return IRQ_NONE;
2150
2151         if (unlikely(!is_vxge_card_up(vdev)))
2152                 return IRQ_NONE;
2153
2154         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2155                         &reason);
2156         if (status == VXGE_HW_OK) {
2157                 vxge_hw_device_mask_all(hldev);
2158
2159                 if (reason &
2160                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2161                         vdev->vpaths_deployed >>
2162                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2163
2164                         vxge_hw_device_clear_tx_rx(hldev);
2165                         napi_schedule(&vdev->napi);
2166                         vxge_debug_intr(VXGE_TRACE,
2167                                 "%s:%d  Exiting...", __func__, __LINE__);
2168                         return IRQ_HANDLED;
2169                 } else
2170                         vxge_hw_device_unmask_all(hldev);
2171         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2172                 (status == VXGE_HW_ERR_CRITICAL) ||
2173                 (status == VXGE_HW_ERR_FIFO))) {
2174                 vxge_hw_device_mask_all(hldev);
2175                 vxge_hw_device_flush_io(hldev);
2176                 return IRQ_HANDLED;
2177         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2178                 return IRQ_HANDLED;
2179
2180         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2181         return IRQ_NONE;
2182 }
2183
2184 #ifdef CONFIG_PCI_MSI
2185
2186 static irqreturn_t
2187 vxge_tx_msix_handle(int irq, void *dev_id)
2188 {
2189         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2190
2191         VXGE_COMPLETE_VPATH_TX(fifo);
2192
2193         return IRQ_HANDLED;
2194 }
2195
2196 static irqreturn_t
2197 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2198 {
2199         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2200
2201         /* MSIX_IDX for Rx is 1 */
2202         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2203                                         ring->rx_vector_no);
2204
2205         napi_schedule(&ring->napi);
2206         return IRQ_HANDLED;
2207 }
2208
2209 static irqreturn_t
2210 vxge_alarm_msix_handle(int irq, void *dev_id)
2211 {
2212         int i;
2213         enum vxge_hw_status status;
2214         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2215         struct vxgedev *vdev = vpath->vdev;
2216         int alarm_msix_id =
2217                 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2218
2219         for (i = 0; i < vdev->no_of_vpath; i++) {
2220                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
2221                         alarm_msix_id);
2222
2223                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2224                         vdev->exec_mode);
2225                 if (status == VXGE_HW_OK) {
2226
2227                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2228                                 alarm_msix_id);
2229                         continue;
2230                 }
2231                 vxge_debug_intr(VXGE_ERR,
2232                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2233                         VXGE_DRIVER_NAME, status);
2234         }
2235         return IRQ_HANDLED;
2236 }
2237
2238 static int vxge_alloc_msix(struct vxgedev *vdev)
2239 {
2240         int j, i, ret = 0;
2241         int intr_cnt = 0;
2242         int alarm_msix_id = 0, msix_intr_vect = 0;
2243         vdev->intr_cnt = 0;
2244
2245         /* Tx/Rx MSIX Vectors count */
2246         vdev->intr_cnt = vdev->no_of_vpath * 2;
2247
2248         /* Alarm MSIX Vectors count */
2249         vdev->intr_cnt++;
2250
2251         intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2252         vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
2253                                                 GFP_KERNEL);
2254         if (!vdev->entries) {
2255                 vxge_debug_init(VXGE_ERR,
2256                         "%s: memory allocation failed",
2257                         VXGE_DRIVER_NAME);
2258                 return  -ENOMEM;
2259         }
2260
2261         vdev->vxge_entries = kzalloc(intr_cnt * sizeof(struct vxge_msix_entry),
2262                                                         GFP_KERNEL);
2263         if (!vdev->vxge_entries) {
2264                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2265                         VXGE_DRIVER_NAME);
2266                 kfree(vdev->entries);
2267                 return -ENOMEM;
2268         }
2269
2270         /* Last vector in the list is used for alarm */
2271         alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2272         for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {
2273
2274                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2275
2276                 /* Initialize the fifo vector */
2277                 vdev->entries[j].entry = msix_intr_vect;
2278                 vdev->vxge_entries[j].entry = msix_intr_vect;
2279                 vdev->vxge_entries[j].in_use = 0;
2280                 j++;
2281
2282                 /* Initialize the ring vector */
2283                 vdev->entries[j].entry = msix_intr_vect + 1;
2284                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2285                 vdev->vxge_entries[j].in_use = 0;
2286                 j++;
2287         }
2288
2289         /* Initialize the alarm vector */
2290         vdev->entries[j].entry = alarm_msix_id;
2291         vdev->vxge_entries[j].entry = alarm_msix_id;
2292         vdev->vxge_entries[j].in_use = 0;
2293
2294         ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2295         /* if driver request exceeeds available irq's, request with a small
2296          * number.
2297         */
2298         if (ret > 0) {
2299                 vxge_debug_init(VXGE_ERR,
2300                         "%s: MSI-X enable failed for %d vectors, available: %d",
2301                         VXGE_DRIVER_NAME, intr_cnt, ret);
2302                 vdev->max_vpath_supported = vdev->no_of_vpath;
2303                 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2304
2305                 /* Reset the alarm vector setting */
2306                 vdev->entries[j].entry = 0;
2307                 vdev->vxge_entries[j].entry = 0;
2308
2309                 /* Initialize the alarm vector with new setting */
2310                 vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
2311                 vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
2312                 vdev->vxge_entries[intr_cnt - 1].in_use = 0;
2313
2314                 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2315                 if (!ret)
2316                         vxge_debug_init(VXGE_ERR,
2317                                 "%s: MSI-X enabled for %d vectors",
2318                                 VXGE_DRIVER_NAME, intr_cnt);
2319         }
2320
2321         if (ret) {
2322                 vxge_debug_init(VXGE_ERR,
2323                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2324                         VXGE_DRIVER_NAME, intr_cnt, ret);
2325                 kfree(vdev->entries);
2326                 kfree(vdev->vxge_entries);
2327                 vdev->entries = NULL;
2328                 vdev->vxge_entries = NULL;
2329                 return -ENODEV;
2330         }
2331         return 0;
2332 }
2333
2334 static int vxge_enable_msix(struct vxgedev *vdev)
2335 {
2336
2337         int i, ret = 0;
2338         enum vxge_hw_status status;
2339         /* 0 - Tx, 1 - Rx  */
2340         int tim_msix_id[4];
2341         int alarm_msix_id = 0, msix_intr_vect = 0;;
2342         vdev->intr_cnt = 0;
2343
2344         /* allocate msix vectors */
2345         ret = vxge_alloc_msix(vdev);
2346         if (!ret) {
2347                 /* Last vector in the list is used for alarm */
2348                 alarm_msix_id =
2349                         VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2350                 for (i = 0; i < vdev->no_of_vpath; i++) {
2351
2352                         /* If fifo or ring are not enabled
2353                            the MSIX vector for that should be set to 0
2354                            Hence initializeing this array to all 0s.
2355                         */
2356                         memset(tim_msix_id, 0, sizeof(tim_msix_id));
2357                         msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2358                         tim_msix_id[0] = msix_intr_vect;
2359
2360                         tim_msix_id[1] = msix_intr_vect + 1;
2361                         vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];
2362
2363                         status = vxge_hw_vpath_msix_set(
2364                                                 vdev->vpaths[i].handle,
2365                                                 tim_msix_id, alarm_msix_id);
2366                         if (status != VXGE_HW_OK) {
2367                                 vxge_debug_init(VXGE_ERR,
2368                                         "vxge_hw_vpath_msix_set "
2369                                         "failed with status : %x", status);
2370                                 kfree(vdev->entries);
2371                                 kfree(vdev->vxge_entries);
2372                                 pci_disable_msix(vdev->pdev);
2373                                 return -ENODEV;
2374                         }
2375                 }
2376         }
2377
2378         return ret;
2379 }
2380
2381 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2382 {
2383         int intr_cnt;
2384
2385         for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
2386                 intr_cnt++) {
2387                 if (vdev->vxge_entries[intr_cnt].in_use) {
2388                         synchronize_irq(vdev->entries[intr_cnt].vector);
2389                         free_irq(vdev->entries[intr_cnt].vector,
2390                                 vdev->vxge_entries[intr_cnt].arg);
2391                         vdev->vxge_entries[intr_cnt].in_use = 0;
2392                 }
2393         }
2394
2395         kfree(vdev->entries);
2396         kfree(vdev->vxge_entries);
2397         vdev->entries = NULL;
2398         vdev->vxge_entries = NULL;
2399
2400         if (vdev->config.intr_type == MSI_X)
2401                 pci_disable_msix(vdev->pdev);
2402 }
2403 #endif
2404
2405 static void vxge_rem_isr(struct vxgedev *vdev)
2406 {
2407         struct __vxge_hw_device  *hldev;
2408         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2409
2410 #ifdef CONFIG_PCI_MSI
2411         if (vdev->config.intr_type == MSI_X) {
2412                 vxge_rem_msix_isr(vdev);
2413         } else
2414 #endif
2415         if (vdev->config.intr_type == INTA) {
2416                         synchronize_irq(vdev->pdev->irq);
2417                         free_irq(vdev->pdev->irq, vdev);
2418         }
2419 }
2420
2421 static int vxge_add_isr(struct vxgedev *vdev)
2422 {
2423         int ret = 0;
2424 #ifdef CONFIG_PCI_MSI
2425         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2426         u64 function_mode = vdev->config.device_hw_info.function_mode;
2427         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2428
2429         if (vdev->config.intr_type == MSI_X)
2430                 ret = vxge_enable_msix(vdev);
2431
2432         if (ret) {
2433                 vxge_debug_init(VXGE_ERR,
2434                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2435                 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2436                         test_and_set_bit(__VXGE_STATE_CARD_UP,
2437                                 &driver_config->inta_dev_open))
2438                         return VXGE_HW_FAIL;
2439                 else {
2440                         vxge_debug_init(VXGE_ERR,
2441                                 "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2442                         vdev->config.intr_type = INTA;
2443                         vxge_hw_device_set_intr_type(vdev->devh,
2444                                 VXGE_HW_INTR_MODE_IRQLINE);
2445                         vxge_close_vpaths(vdev, 1);
2446                         vdev->no_of_vpath = 1;
2447                         vdev->stats.vpaths_open = 1;
2448                 }
2449         }
2450
2451         if (vdev->config.intr_type == MSI_X) {
2452                 for (intr_idx = 0;
2453                      intr_idx < (vdev->no_of_vpath *
2454                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2455
2456                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2457                         irq_req = 0;
2458
2459                         switch (msix_idx) {
2460                         case 0:
2461                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2462                                         "%s:vxge fn: %d vpath: %d Tx MSI-X: %d",
2463                                         vdev->ndev->name, pci_fun, vp_idx,
2464                                         vdev->entries[intr_cnt].entry);
2465                                 ret = request_irq(
2466                                     vdev->entries[intr_cnt].vector,
2467                                         vxge_tx_msix_handle, 0,
2468                                         vdev->desc[intr_cnt],
2469                                         &vdev->vpaths[vp_idx].fifo);
2470                                         vdev->vxge_entries[intr_cnt].arg =
2471                                                 &vdev->vpaths[vp_idx].fifo;
2472                                 irq_req = 1;
2473                                 break;
2474                         case 1:
2475                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2476                                         "%s:vxge fn: %d vpath: %d Rx MSI-X: %d",
2477                                         vdev->ndev->name, pci_fun, vp_idx,
2478                                         vdev->entries[intr_cnt].entry);
2479                                 ret = request_irq(
2480                                     vdev->entries[intr_cnt].vector,
2481                                         vxge_rx_msix_napi_handle,
2482                                         0,
2483                                         vdev->desc[intr_cnt],
2484                                         &vdev->vpaths[vp_idx].ring);
2485                                         vdev->vxge_entries[intr_cnt].arg =
2486                                                 &vdev->vpaths[vp_idx].ring;
2487                                 irq_req = 1;
2488                                 break;
2489                         }
2490
2491                         if (ret) {
2492                                 vxge_debug_init(VXGE_ERR,
2493                                         "%s: MSIX - %d  Registration failed",
2494                                         vdev->ndev->name, intr_cnt);
2495                                 vxge_rem_msix_isr(vdev);
2496                                 if ((function_mode ==
2497                                         VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2498                                         test_and_set_bit(__VXGE_STATE_CARD_UP,
2499                                                 &driver_config->inta_dev_open))
2500                                         return VXGE_HW_FAIL;
2501                                 else {
2502                                         vxge_hw_device_set_intr_type(
2503                                                 vdev->devh,
2504                                                 VXGE_HW_INTR_MODE_IRQLINE);
2505                                                 vdev->config.intr_type = INTA;
2506                                         vxge_debug_init(VXGE_ERR,
2507                                                 "%s: Defaulting to INTA"
2508                                                 , vdev->ndev->name);
2509                                         vxge_close_vpaths(vdev, 1);
2510                                         vdev->no_of_vpath = 1;
2511                                         vdev->stats.vpaths_open = 1;
2512                                         goto INTA_MODE;
2513                                 }
2514                         }
2515
2516                         if (irq_req) {
2517                                 /* We requested for this msix interrupt */
2518                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2519                                 vxge_hw_vpath_msix_unmask(
2520                                         vdev->vpaths[vp_idx].handle,
2521                                         intr_idx);
2522                                 intr_cnt++;
2523                         }
2524
2525                         /* Point to next vpath handler */
2526                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0)
2527                                 && (vp_idx < (vdev->no_of_vpath - 1)))
2528                                         vp_idx++;
2529                 }
2530
2531                 intr_cnt = vdev->max_vpath_supported * 2;
2532                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2533                         "%s:vxge Alarm fn: %d MSI-X: %d",
2534                         vdev->ndev->name, pci_fun,
2535                         vdev->entries[intr_cnt].entry);
2536                 /* For Alarm interrupts */
2537                 ret = request_irq(vdev->entries[intr_cnt].vector,
2538                                         vxge_alarm_msix_handle, 0,
2539                                         vdev->desc[intr_cnt],
2540                                         &vdev->vpaths[vp_idx]);
2541                 if (ret) {
2542                         vxge_debug_init(VXGE_ERR,
2543                                 "%s: MSIX - %d Registration failed",
2544                                 vdev->ndev->name, intr_cnt);
2545                         vxge_rem_msix_isr(vdev);
2546                         if ((function_mode ==
2547                                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2548                                 test_and_set_bit(__VXGE_STATE_CARD_UP,
2549                                                 &driver_config->inta_dev_open))
2550                                 return VXGE_HW_FAIL;
2551                         else {
2552                                 vxge_hw_device_set_intr_type(vdev->devh,
2553                                                 VXGE_HW_INTR_MODE_IRQLINE);
2554                                 vdev->config.intr_type = INTA;
2555                                 vxge_debug_init(VXGE_ERR,
2556                                         "%s: Defaulting to INTA",
2557                                         vdev->ndev->name);
2558                                 vxge_close_vpaths(vdev, 1);
2559                                 vdev->no_of_vpath = 1;
2560                                 vdev->stats.vpaths_open = 1;
2561                                 goto INTA_MODE;
2562                         }
2563                 }
2564
2565                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2566                                         intr_idx - 2);
2567                 vdev->vxge_entries[intr_cnt].in_use = 1;
2568                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[vp_idx];
2569         }
2570 INTA_MODE:
2571 #endif
2572         snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);
2573
2574         if (vdev->config.intr_type == INTA) {
2575                 ret = request_irq((int) vdev->pdev->irq,
2576                         vxge_isr_napi,
2577                         IRQF_SHARED, vdev->desc[0], vdev);
2578                 if (ret) {
2579                         vxge_debug_init(VXGE_ERR,
2580                                 "%s %s-%d: ISR registration failed",
2581                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2582                         return -ENODEV;
2583                 }
2584                 vxge_debug_init(VXGE_TRACE,
2585                         "new %s-%d line allocated",
2586                         "IRQ", vdev->pdev->irq);
2587         }
2588
2589         return VXGE_HW_OK;
2590 }
2591
2592 static void vxge_poll_vp_reset(unsigned long data)
2593 {
2594         struct vxgedev *vdev = (struct vxgedev *)data;
2595         int i, j = 0;
2596
2597         for (i = 0; i < vdev->no_of_vpath; i++) {
2598                 if (test_bit(i, &vdev->vp_reset)) {
2599                         vxge_reset_vpath(vdev, i);
2600                         j++;
2601                 }
2602         }
2603         if (j && (vdev->config.intr_type != MSI_X)) {
2604                 vxge_hw_device_unmask_all(vdev->devh);
2605                 vxge_hw_device_flush_io(vdev->devh);
2606         }
2607
2608         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2609 }
2610
2611 static void vxge_poll_vp_lockup(unsigned long data)
2612 {
2613         struct vxgedev *vdev = (struct vxgedev *)data;
2614         int i;
2615         struct vxge_ring *ring;
2616         enum vxge_hw_status status = VXGE_HW_OK;
2617
2618         for (i = 0; i < vdev->no_of_vpath; i++) {
2619                 ring = &vdev->vpaths[i].ring;
2620                 /* Did this vpath received any packets */
2621                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2622                         status = vxge_hw_vpath_check_leak(ring->handle);
2623
2624                         /* Did it received any packets last time */
2625                         if ((VXGE_HW_FAIL == status) &&
2626                                 (VXGE_HW_FAIL == ring->last_status)) {
2627
2628                                 /* schedule vpath reset */
2629                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2630
2631                                         /* disable interrupts for this vpath */
2632                                         vxge_vpath_intr_disable(vdev, i);
2633
2634                                         /* stop the queue for this vpath */
2635                                         vxge_stop_tx_queue(&vdev->vpaths[i].
2636                                                                 fifo);
2637                                         continue;
2638                                 }
2639                         }
2640                 }
2641                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2642                 ring->last_status = status;
2643         }
2644
2645         /* Check every 1 milli second */
2646         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2647 }
2648
2649 /**
2650  * vxge_open
2651  * @dev: pointer to the device structure.
2652  *
2653  * This function is the open entry point of the driver. It mainly calls a
2654  * function to allocate Rx buffers and inserts them into the buffer
2655  * descriptors and then enables the Rx part of the NIC.
2656  * Return value: '0' on success and an appropriate (-)ve integer as
2657  * defined in errno.h file on failure.
2658  */
2659 int
2660 vxge_open(struct net_device *dev)
2661 {
2662         enum vxge_hw_status status;
2663         struct vxgedev *vdev;
2664         struct __vxge_hw_device *hldev;
2665         int ret = 0;
2666         int i;
2667         u64 val64, function_mode;
2668         vxge_debug_entryexit(VXGE_TRACE,
2669                 "%s: %s:%d", dev->name, __func__, __LINE__);
2670
2671         vdev = (struct vxgedev *)netdev_priv(dev);
2672         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2673         function_mode = vdev->config.device_hw_info.function_mode;
2674
2675         /* make sure you have link off by default every time Nic is
2676          * initialized */
2677         netif_carrier_off(dev);
2678
2679         /* Check for another device already opn with INTA */
2680         if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2681                 test_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open)) {
2682                 ret = -EPERM;
2683                 goto out0;
2684         }
2685
2686         /* Open VPATHs */
2687         status = vxge_open_vpaths(vdev);
2688         if (status != VXGE_HW_OK) {
2689                 vxge_debug_init(VXGE_ERR,
2690                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2691                 ret = -EPERM;
2692                 goto out0;
2693         }
2694
2695         vdev->mtu = dev->mtu;
2696
2697         status = vxge_add_isr(vdev);
2698         if (status != VXGE_HW_OK) {
2699                 vxge_debug_init(VXGE_ERR,
2700                         "%s: fatal: ISR add failed", dev->name);
2701                 ret = -EPERM;
2702                 goto out1;
2703         }
2704
2705
2706         if (vdev->config.intr_type != MSI_X) {
2707                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2708                         vdev->config.napi_weight);
2709                 napi_enable(&vdev->napi);
2710                 for (i = 0; i < vdev->no_of_vpath; i++)
2711                         vdev->vpaths[i].ring.napi_p = &vdev->napi;
2712         } else {
2713                 for (i = 0; i < vdev->no_of_vpath; i++) {
2714                         netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2715                             vxge_poll_msix, vdev->config.napi_weight);
2716                         napi_enable(&vdev->vpaths[i].ring.napi);
2717                         vdev->vpaths[i].ring.napi_p =
2718                                 &vdev->vpaths[i].ring.napi;
2719                 }
2720         }
2721
2722         /* configure RTH */
2723         if (vdev->config.rth_steering) {
2724                 status = vxge_rth_configure(vdev);
2725                 if (status != VXGE_HW_OK) {
2726                         vxge_debug_init(VXGE_ERR,
2727                                 "%s: fatal: RTH configuration failed",
2728                                 dev->name);
2729                         ret = -EPERM;
2730                         goto out2;
2731                 }
2732         }
2733
2734         for (i = 0; i < vdev->no_of_vpath; i++) {
2735                 /* set initial mtu before enabling the device */
2736                 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2737                                                 vdev->mtu);
2738                 if (status != VXGE_HW_OK) {
2739                         vxge_debug_init(VXGE_ERR,
2740                                 "%s: fatal: can not set new MTU", dev->name);
2741                         ret = -EPERM;
2742                         goto out2;
2743                 }
2744         }
2745
2746         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2747         vxge_debug_init(vdev->level_trace,
2748                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2749         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2750
2751         /* Reprogram the DA table with populated mac addresses */
2752         for (i = 0; i < vdev->no_of_vpath; i++) {
2753                 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2754                 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2755         }
2756
2757         /* Enable vpath to sniff all unicast/multicast traffic that not
2758          * addressed to them. We allow promiscous mode for PF only
2759          */
2760
2761         val64 = 0;
2762         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2763                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2764
2765         vxge_hw_mgmt_reg_write(vdev->devh,
2766                 vxge_hw_mgmt_reg_type_mrpcim,
2767                 0,
2768                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2769                         rxmac_authorize_all_addr),
2770                 val64);
2771
2772         vxge_hw_mgmt_reg_write(vdev->devh,
2773                 vxge_hw_mgmt_reg_type_mrpcim,
2774                 0,
2775                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2776                         rxmac_authorize_all_vid),
2777                 val64);
2778
2779         vxge_set_multicast(dev);
2780
2781         /* Enabling Bcast and mcast for all vpath */
2782         for (i = 0; i < vdev->no_of_vpath; i++) {
2783                 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2784                 if (status != VXGE_HW_OK)
2785                         vxge_debug_init(VXGE_ERR,
2786                                 "%s : Can not enable bcast for vpath "
2787                                 "id %d", dev->name, i);
2788                 if (vdev->config.addr_learn_en) {
2789                         status =
2790                             vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2791                         if (status != VXGE_HW_OK)
2792                                 vxge_debug_init(VXGE_ERR,
2793                                         "%s : Can not enable mcast for vpath "
2794                                         "id %d", dev->name, i);
2795                 }
2796         }
2797
2798         vxge_hw_device_setpause_data(vdev->devh, 0,
2799                 vdev->config.tx_pause_enable,
2800                 vdev->config.rx_pause_enable);
2801
2802         if (vdev->vp_reset_timer.function == NULL)
2803                 vxge_os_timer(vdev->vp_reset_timer,
2804                         vxge_poll_vp_reset, vdev, (HZ/2));
2805
2806         if (vdev->vp_lockup_timer.function == NULL)
2807                 vxge_os_timer(vdev->vp_lockup_timer,
2808                         vxge_poll_vp_lockup, vdev, (HZ/2));
2809
2810         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2811
2812         smp_wmb();
2813
2814         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2815                 netif_carrier_on(vdev->ndev);
2816                 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2817                 vdev->stats.link_up++;
2818         }
2819
2820         vxge_hw_device_intr_enable(vdev->devh);
2821
2822         smp_wmb();
2823
2824         for (i = 0; i < vdev->no_of_vpath; i++) {
2825                 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2826                 smp_wmb();
2827                 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2828         }
2829
2830         vxge_start_all_tx_queue(vdev);
2831         goto out0;
2832
2833 out2:
2834         vxge_rem_isr(vdev);
2835
2836         /* Disable napi */
2837         if (vdev->config.intr_type != MSI_X)
2838                 napi_disable(&vdev->napi);
2839         else {
2840                 for (i = 0; i < vdev->no_of_vpath; i++)
2841                         napi_disable(&vdev->vpaths[i].ring.napi);
2842         }
2843
2844 out1:
2845         vxge_close_vpaths(vdev, 0);
2846 out0:
2847         vxge_debug_entryexit(VXGE_TRACE,
2848                                 "%s: %s:%d  Exiting...",
2849                                 dev->name, __func__, __LINE__);
2850         return ret;
2851 }
2852
2853 /* Loop throught the mac address list and delete all the entries */
2854 void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2855 {
2856
2857         struct list_head *entry, *next;
2858         if (list_empty(&vpath->mac_addr_list))
2859                 return;
2860
2861         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2862                 list_del(entry);
2863                 kfree((struct vxge_mac_addrs *)entry);
2864         }
2865 }
2866
2867 static void vxge_napi_del_all(struct vxgedev *vdev)
2868 {
2869         int i;
2870         if (vdev->config.intr_type != MSI_X)
2871                 netif_napi_del(&vdev->napi);
2872         else {
2873                 for (i = 0; i < vdev->no_of_vpath; i++)
2874                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2875         }
2876         return;
2877 }
2878
2879 int do_vxge_close(struct net_device *dev, int do_io)
2880 {
2881         enum vxge_hw_status status;
2882         struct vxgedev *vdev;
2883         struct __vxge_hw_device *hldev;
2884         int i;
2885         u64 val64, vpath_vector;
2886         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2887                 dev->name, __func__, __LINE__);
2888
2889         vdev = (struct vxgedev *)netdev_priv(dev);
2890         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2891
2892         if (unlikely(!is_vxge_card_up(vdev)))
2893                 return 0;
2894
2895         /* If vxge_handle_crit_err task is executing,
2896          * wait till it completes. */
2897         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2898                 msleep(50);
2899
2900         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2901         if (do_io) {
2902                 /* Put the vpath back in normal mode */
2903                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2904                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2905                                 vxge_hw_mgmt_reg_type_mrpcim,
2906                                 0,
2907                                 (ulong)offsetof(
2908                                         struct vxge_hw_mrpcim_reg,
2909                                         rts_mgr_cbasin_cfg),
2910                                 &val64);
2911
2912                 if (status == VXGE_HW_OK) {
2913                         val64 &= ~vpath_vector;
2914                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2915                                         vxge_hw_mgmt_reg_type_mrpcim,
2916                                         0,
2917                                         (ulong)offsetof(
2918                                                 struct vxge_hw_mrpcim_reg,
2919                                                 rts_mgr_cbasin_cfg),
2920                                         val64);
2921                 }
2922
2923                 /* Remove the function 0 from promiscous mode */
2924                 vxge_hw_mgmt_reg_write(vdev->devh,
2925                         vxge_hw_mgmt_reg_type_mrpcim,
2926                         0,
2927                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2928                                 rxmac_authorize_all_addr),
2929                         0);
2930
2931                 vxge_hw_mgmt_reg_write(vdev->devh,
2932                         vxge_hw_mgmt_reg_type_mrpcim,
2933                         0,
2934                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2935                                 rxmac_authorize_all_vid),
2936                         0);
2937
2938                 smp_wmb();
2939         }
2940         del_timer_sync(&vdev->vp_lockup_timer);
2941
2942         del_timer_sync(&vdev->vp_reset_timer);
2943
2944         /* Disable napi */
2945         if (vdev->config.intr_type != MSI_X)
2946                 napi_disable(&vdev->napi);
2947         else {
2948                 for (i = 0; i < vdev->no_of_vpath; i++)
2949                         napi_disable(&vdev->vpaths[i].ring.napi);
2950         }
2951
2952         netif_carrier_off(vdev->ndev);
2953         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2954         vxge_stop_all_tx_queue(vdev);
2955
2956         /* Note that at this point xmit() is stopped by upper layer */
2957         if (do_io)
2958                 vxge_hw_device_intr_disable(vdev->devh);
2959
2960         mdelay(1000);
2961
2962         vxge_rem_isr(vdev);
2963
2964         vxge_napi_del_all(vdev);
2965
2966         if (do_io)
2967                 vxge_reset_all_vpaths(vdev);
2968
2969         vxge_close_vpaths(vdev, 0);
2970
2971         vxge_debug_entryexit(VXGE_TRACE,
2972                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2973
2974         clear_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open);
2975         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2976
2977         return 0;
2978 }
2979
2980 /**
2981  * vxge_close
2982  * @dev: device pointer.
2983  *
2984  * This is the stop entry point of the driver. It needs to undo exactly
2985  * whatever was done by the open entry point, thus it's usually referred to
2986  * as the close function.Among other things this function mainly stops the
2987  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2988  * Return value: '0' on success and an appropriate (-)ve integer as
2989  * defined in errno.h file on failure.
2990  */
2991 int
2992 vxge_close(struct net_device *dev)
2993 {
2994         do_vxge_close(dev, 1);
2995         return 0;
2996 }
2997
2998 /**
2999  * vxge_change_mtu
3000  * @dev: net device pointer.
3001  * @new_mtu :the new MTU size for the device.
3002  *
3003  * A driver entry point to change MTU size for the device. Before changing
3004  * the MTU the device must be stopped.
3005  */
3006 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3007 {
3008         struct vxgedev *vdev = netdev_priv(dev);
3009
3010         vxge_debug_entryexit(vdev->level_trace,
3011                 "%s:%d", __func__, __LINE__);
3012         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3013                 vxge_debug_init(vdev->level_err,
3014                         "%s: mtu size is invalid", dev->name);
3015                 return -EPERM;
3016         }
3017
3018         /* check if device is down already */
3019         if (unlikely(!is_vxge_card_up(vdev))) {
3020                 /* just store new value, will use later on open() */
3021                 dev->mtu = new_mtu;
3022                 vxge_debug_init(vdev->level_err,
3023                         "%s", "device is down on MTU change");
3024                 return 0;
3025         }
3026
3027         vxge_debug_init(vdev->level_trace,
3028                 "trying to apply new MTU %d", new_mtu);
3029
3030         if (vxge_close(dev))
3031                 return -EIO;
3032
3033         dev->mtu = new_mtu;
3034         vdev->mtu = new_mtu;
3035
3036         if (vxge_open(dev))
3037                 return -EIO;
3038
3039         vxge_debug_init(vdev->level_trace,
3040                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3041
3042         vxge_debug_entryexit(vdev->level_trace,
3043                 "%s:%d  Exiting...", __func__, __LINE__);
3044
3045         return 0;
3046 }
3047
3048 /**
3049  * vxge_get_stats
3050  * @dev: pointer to the device structure
3051  *
3052  * Updates the device statistics structure. This function updates the device
3053  * statistics structure in the net_device structure and returns a pointer
3054  * to the same.
3055  */
3056 static struct net_device_stats *
3057 vxge_get_stats(struct net_device *dev)
3058 {
3059         struct vxgedev *vdev;
3060         struct net_device_stats *net_stats;
3061         int k;
3062
3063         vdev = netdev_priv(dev);
3064
3065         net_stats = &vdev->stats.net_stats;
3066
3067         memset(net_stats, 0, sizeof(struct net_device_stats));
3068
3069         for (k = 0; k < vdev->no_of_vpath; k++) {
3070                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3071                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3072                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3073                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3074                 net_stats->rx_dropped +=
3075                         vdev->vpaths[k].ring.stats.rx_dropped;
3076
3077                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3078                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3079                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3080         }
3081
3082         return net_stats;
3083 }
3084
3085 /**
3086  * vxge_ioctl
3087  * @dev: Device pointer.
3088  * @ifr: An IOCTL specific structure, that can contain a pointer to
3089  *       a proprietary structure used to pass information to the driver.
3090  * @cmd: This is used to distinguish between the different commands that
3091  *       can be passed to the IOCTL functions.
3092  *
3093  * Entry point for the Ioctl.
3094  */
3095 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3096 {
3097         return -EOPNOTSUPP;
3098 }
3099
3100 /**
3101  * vxge_tx_watchdog
3102  * @dev: pointer to net device structure
3103  *
3104  * Watchdog for transmit side.
3105  * This function is triggered if the Tx Queue is stopped
3106  * for a pre-defined amount of time when the Interface is still up.
3107  */
3108 static void
3109 vxge_tx_watchdog(struct net_device *dev)
3110 {
3111         struct vxgedev *vdev;
3112
3113         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3114
3115         vdev = (struct vxgedev *)netdev_priv(dev);
3116
3117         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3118
3119         vxge_reset(vdev);
3120         vxge_debug_entryexit(VXGE_TRACE,
3121                 "%s:%d  Exiting...", __func__, __LINE__);
3122 }
3123
3124 /**
3125  * vxge_vlan_rx_register
3126  * @dev: net device pointer.
3127  * @grp: vlan group
3128  *
3129  * Vlan group registration
3130  */
3131 static void
3132 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3133 {
3134         struct vxgedev *vdev;
3135         struct vxge_vpath *vpath;
3136         int vp;
3137         u64 vid;
3138         enum vxge_hw_status status;
3139         int i;
3140
3141         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3142
3143         vdev = (struct vxgedev *)netdev_priv(dev);
3144
3145         vpath = &vdev->vpaths[0];
3146         if ((NULL == grp) && (vpath->is_open)) {
3147                 /* Get the first vlan */
3148                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3149
3150                 while (status == VXGE_HW_OK) {
3151
3152                         /* Delete this vlan from the vid table */
3153                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3154                                 vpath = &vdev->vpaths[vp];
3155                                 if (!vpath->is_open)
3156                                         continue;
3157
3158                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3159                         }
3160
3161                         /* Get the next vlan to be deleted */
3162                         vpath = &vdev->vpaths[0];
3163                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3164                 }
3165         }
3166
3167         vdev->vlgrp = grp;
3168
3169         for (i = 0; i < vdev->no_of_vpath; i++) {
3170                 if (vdev->vpaths[i].is_configured)
3171                         vdev->vpaths[i].ring.vlgrp = grp;
3172         }
3173
3174         vxge_debug_entryexit(VXGE_TRACE,
3175                 "%s:%d  Exiting...", __func__, __LINE__);
3176 }
3177
3178 /**
3179  * vxge_vlan_rx_add_vid
3180  * @dev: net device pointer.
3181  * @vid: vid
3182  *
3183  * Add the vlan id to the devices vlan id table
3184  */
3185 static void
3186 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3187 {
3188         struct vxgedev *vdev;
3189         struct vxge_vpath *vpath;
3190         int vp_id;
3191
3192         vdev = (struct vxgedev *)netdev_priv(dev);
3193
3194         /* Add these vlan to the vid table */
3195         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3196                 vpath = &vdev->vpaths[vp_id];
3197                 if (!vpath->is_open)
3198                         continue;
3199                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3200         }
3201 }
3202
3203 /**
3204  * vxge_vlan_rx_add_vid
3205  * @dev: net device pointer.
3206  * @vid: vid
3207  *
3208  * Remove the vlan id from the device's vlan id table
3209  */
3210 static void
3211 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3212 {
3213         struct vxgedev *vdev;
3214         struct vxge_vpath *vpath;
3215         int vp_id;
3216
3217         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3218
3219         vdev = (struct vxgedev *)netdev_priv(dev);
3220
3221         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3222
3223         /* Delete this vlan from the vid table */
3224         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3225                 vpath = &vdev->vpaths[vp_id];
3226                 if (!vpath->is_open)
3227                         continue;
3228                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3229         }
3230         vxge_debug_entryexit(VXGE_TRACE,
3231                 "%s:%d  Exiting...", __func__, __LINE__);
3232 }
3233
3234 static const struct net_device_ops vxge_netdev_ops = {
3235         .ndo_open               = vxge_open,
3236         .ndo_stop               = vxge_close,
3237         .ndo_get_stats          = vxge_get_stats,
3238         .ndo_start_xmit         = vxge_xmit,
3239         .ndo_validate_addr      = eth_validate_addr,
3240         .ndo_set_multicast_list = vxge_set_multicast,
3241
3242         .ndo_do_ioctl           = vxge_ioctl,
3243
3244         .ndo_set_mac_address    = vxge_set_mac_addr,
3245         .ndo_change_mtu         = vxge_change_mtu,
3246         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3247         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3248         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3249
3250         .ndo_tx_timeout         = vxge_tx_watchdog,
3251 #ifdef CONFIG_NET_POLL_CONTROLLER
3252         .ndo_poll_controller    = vxge_netpoll,
3253 #endif
3254 };
3255
3256 int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3257                                    struct vxge_config *config,
3258                                    int high_dma, int no_of_vpath,
3259                                    struct vxgedev **vdev_out)
3260 {
3261         struct net_device *ndev;
3262         enum vxge_hw_status status = VXGE_HW_OK;
3263         struct vxgedev *vdev;
3264         int i, ret = 0, no_of_queue = 1;
3265         u64 stat;
3266
3267         *vdev_out = NULL;
3268         if (config->tx_steering_type == TX_MULTIQ_STEERING)
3269                 no_of_queue = no_of_vpath;
3270
3271         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3272                         no_of_queue);
3273         if (ndev == NULL) {
3274                 vxge_debug_init(
3275                         vxge_hw_device_trace_level_get(hldev),
3276                 "%s : device allocation failed", __func__);
3277                 ret = -ENODEV;
3278                 goto _out0;
3279         }
3280
3281         vxge_debug_entryexit(
3282                 vxge_hw_device_trace_level_get(hldev),
3283                 "%s: %s:%d  Entering...",
3284                 ndev->name, __func__, __LINE__);
3285
3286         vdev = netdev_priv(ndev);
3287         memset(vdev, 0, sizeof(struct vxgedev));
3288
3289         vdev->ndev = ndev;
3290         vdev->devh = hldev;
3291         vdev->pdev = hldev->pdev;
3292         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3293         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3294
3295         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3296
3297         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3298                                 NETIF_F_HW_VLAN_FILTER;
3299         /*  Driver entry points */
3300         ndev->irq = vdev->pdev->irq;
3301         ndev->base_addr = (unsigned long) hldev->bar0;
3302
3303         ndev->netdev_ops = &vxge_netdev_ops;
3304
3305         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3306
3307         initialize_ethtool_ops(ndev);
3308
3309         /* Allocate memory for vpath */
3310         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3311                                 no_of_vpath, GFP_KERNEL);
3312         if (!vdev->vpaths) {
3313                 vxge_debug_init(VXGE_ERR,
3314                         "%s: vpath memory allocation failed",
3315                         vdev->ndev->name);
3316                 ret = -ENODEV;
3317                 goto _out1;
3318         }
3319
3320         ndev->features |= NETIF_F_SG;
3321
3322         ndev->features |= NETIF_F_HW_CSUM;
3323         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3324                 "%s : checksuming enabled", __func__);
3325
3326         if (high_dma) {
3327                 ndev->features |= NETIF_F_HIGHDMA;
3328                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3329                         "%s : using High DMA", __func__);
3330         }
3331
3332         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3333
3334         if (vdev->config.gro_enable)
3335                 ndev->features |= NETIF_F_GRO;
3336
3337         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3338                 ndev->real_num_tx_queues = no_of_vpath;
3339
3340 #ifdef NETIF_F_LLTX
3341         ndev->features |= NETIF_F_LLTX;
3342 #endif
3343
3344         for (i = 0; i < no_of_vpath; i++)
3345                 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3346
3347         if (register_netdev(ndev)) {
3348                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3349                         "%s: %s : device registration failed!",
3350                         ndev->name, __func__);
3351                 ret = -ENODEV;
3352                 goto _out2;
3353         }
3354
3355         /*  Set the factory defined MAC address initially */
3356         ndev->addr_len = ETH_ALEN;
3357
3358         /* Make Link state as off at this point, when the Link change
3359          * interrupt comes the state will be automatically changed to
3360          * the right state.
3361          */
3362         netif_carrier_off(ndev);
3363
3364         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3365                 "%s: Ethernet device registered",
3366                 ndev->name);
3367
3368         *vdev_out = vdev;
3369
3370         /* Resetting the Device stats */
3371         status = vxge_hw_mrpcim_stats_access(
3372                                 hldev,
3373                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3374                                 0,
3375                                 0,
3376                                 &stat);
3377
3378         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3379                 vxge_debug_init(
3380                         vxge_hw_device_trace_level_get(hldev),
3381                         "%s: device stats clear returns"
3382                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3383
3384         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3385                 "%s: %s:%d  Exiting...",
3386                 ndev->name, __func__, __LINE__);
3387
3388         return ret;
3389 _out2:
3390         kfree(vdev->vpaths);
3391 _out1:
3392         free_netdev(ndev);
3393 _out0:
3394         return ret;
3395 }
3396
3397 /*
3398  * vxge_device_unregister
3399  *
3400  * This function will unregister and free network device
3401  */
3402 void
3403 vxge_device_unregister(struct __vxge_hw_device *hldev)
3404 {
3405         struct vxgedev *vdev;
3406         struct net_device *dev;
3407         char buf[IFNAMSIZ];
3408 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3409         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3410         u32 level_trace;
3411 #endif
3412
3413         dev = hldev->ndev;
3414         vdev = netdev_priv(dev);
3415 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3416         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3417         level_trace = vdev->level_trace;
3418 #endif
3419         vxge_debug_entryexit(level_trace,
3420                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3421
3422         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3423
3424         /* in 2.6 will call stop() if device is up */
3425         unregister_netdev(dev);
3426
3427         flush_scheduled_work();
3428
3429         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3430         vxge_debug_entryexit(level_trace,
3431                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3432 }
3433
3434 /*
3435  * vxge_callback_crit_err
3436  *
3437  * This function is called by the alarm handler in interrupt context.
3438  * Driver must analyze it based on the event type.
3439  */
3440 static void
3441 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3442                         enum vxge_hw_event type, u64 vp_id)
3443 {
3444         struct net_device *dev = hldev->ndev;
3445         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3446         int vpath_idx;
3447
3448         vxge_debug_entryexit(vdev->level_trace,
3449                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3450
3451         /* Note: This event type should be used for device wide
3452          * indications only - Serious errors, Slot freeze and critical errors
3453          */
3454         vdev->cric_err_event = type;
3455
3456         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3457                 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3458                         break;
3459
3460         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3461                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3462                         vxge_debug_init(VXGE_ERR,
3463                                 "%s: Slot is frozen", vdev->ndev->name);
3464                 } else if (type == VXGE_HW_EVENT_SERR) {
3465                         vxge_debug_init(VXGE_ERR,
3466                                 "%s: Encountered Serious Error",
3467                                 vdev->ndev->name);
3468                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3469                         vxge_debug_init(VXGE_ERR,
3470                                 "%s: Encountered Critical Error",
3471                                 vdev->ndev->name);
3472         }
3473
3474         if ((type == VXGE_HW_EVENT_SERR) ||
3475                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3476                 if (unlikely(vdev->exec_mode))
3477                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3478         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3479                 vxge_hw_device_mask_all(hldev);
3480                 if (unlikely(vdev->exec_mode))
3481                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3482         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3483                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3484
3485                 if (unlikely(vdev->exec_mode))
3486                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3487                 else {
3488                         /* check if this vpath is already set for reset */
3489                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3490
3491                                 /* disable interrupts for this vpath */
3492                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3493
3494                                 /* stop the queue for this vpath */
3495                                 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3496                                                         fifo);
3497                         }
3498                 }
3499         }
3500
3501         vxge_debug_entryexit(vdev->level_trace,
3502                 "%s: %s:%d  Exiting...",
3503                 vdev->ndev->name, __func__, __LINE__);
3504 }
3505
3506 static void verify_bandwidth(void)
3507 {
3508         int i, band_width, total = 0, equal_priority = 0;
3509
3510         /* 1. If user enters 0 for some fifo, give equal priority to all */
3511         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3512                 if (bw_percentage[i] == 0) {
3513                         equal_priority = 1;
3514                         break;
3515                 }
3516         }
3517
3518         if (!equal_priority) {
3519                 /* 2. If sum exceeds 100, give equal priority to all */
3520                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3521                         if (bw_percentage[i] == 0xFF)
3522                                 break;
3523
3524                         total += bw_percentage[i];
3525                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3526                                 equal_priority = 1;
3527                                 break;
3528                         }
3529                 }
3530         }
3531
3532         if (!equal_priority) {
3533                 /* Is all the bandwidth consumed? */
3534                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3535                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3536                                 /* Split rest of bw equally among next VPs*/
3537                                 band_width =
3538                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3539                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3540                                 if (band_width < 2) /* min of 2% */
3541                                         equal_priority = 1;
3542                                 else {
3543                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3544                                                 i++)
3545                                                 bw_percentage[i] =
3546                                                         band_width;
3547                                 }
3548                         }
3549                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3550                         equal_priority = 1;
3551         }
3552
3553         if (equal_priority) {
3554                 vxge_debug_init(VXGE_ERR,
3555                         "%s: Assigning equal bandwidth to all the vpaths",
3556                         VXGE_DRIVER_NAME);
3557                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3558                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3559                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3560                         bw_percentage[i] = bw_percentage[0];
3561         }
3562
3563         return;
3564 }
3565
3566 /*
3567  * Vpath configuration
3568  */
3569 static int __devinit vxge_config_vpaths(
3570                         struct vxge_hw_device_config *device_config,
3571                         u64 vpath_mask, struct vxge_config *config_param)
3572 {
3573         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3574         u32 txdl_size, txdl_per_memblock;
3575
3576         temp = driver_config->vpath_per_dev;
3577         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3578                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3579                 /* No more CPU. Return vpath number as zero.*/
3580                 if (driver_config->g_no_cpus == -1)
3581                         return 0;
3582
3583                 if (!driver_config->g_no_cpus)
3584                         driver_config->g_no_cpus = num_online_cpus();
3585
3586                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3587                 if (!driver_config->vpath_per_dev)
3588                         driver_config->vpath_per_dev = 1;
3589
3590                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3591                         if (!vxge_bVALn(vpath_mask, i, 1))
3592                                 continue;
3593                         else
3594                                 default_no_vpath++;
3595                 if (default_no_vpath < driver_config->vpath_per_dev)
3596                         driver_config->vpath_per_dev = default_no_vpath;
3597
3598                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3599                                 (driver_config->vpath_per_dev * 2);
3600                 if (driver_config->g_no_cpus <= 0)
3601                         driver_config->g_no_cpus = -1;
3602         }
3603
3604         if (driver_config->vpath_per_dev == 1) {
3605                 vxge_debug_ll_config(VXGE_TRACE,
3606                         "%s: Disable tx and rx steering, "
3607                         "as single vpath is configured", VXGE_DRIVER_NAME);
3608                 config_param->rth_steering = NO_STEERING;
3609                 config_param->tx_steering_type = NO_STEERING;
3610                 device_config->rth_en = 0;
3611         }
3612
3613         /* configure bandwidth */
3614         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3615                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3616
3617         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3618                 device_config->vp_config[i].vp_id = i;
3619                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3620                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3621                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3622                                 vxge_debug_ll_config(VXGE_TRACE,
3623                                         "%s: vpath: %d is not available",
3624                                         VXGE_DRIVER_NAME, i);
3625                                 continue;
3626                         } else {
3627                                 vxge_debug_ll_config(VXGE_TRACE,
3628                                         "%s: vpath: %d available",
3629                                         VXGE_DRIVER_NAME, i);
3630                                 no_of_vpaths++;
3631                         }
3632                 } else {
3633                         vxge_debug_ll_config(VXGE_TRACE,
3634                                 "%s: vpath: %d is not configured, "
3635                                 "max_config_vpath exceeded",
3636                                 VXGE_DRIVER_NAME, i);
3637                         break;
3638                 }
3639
3640                 /* Configure Tx fifo's */
3641                 device_config->vp_config[i].fifo.enable =
3642                                                 VXGE_HW_FIFO_ENABLE;
3643                 device_config->vp_config[i].fifo.max_frags =
3644                                 MAX_SKB_FRAGS;
3645                 device_config->vp_config[i].fifo.memblock_size =
3646                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3647
3648                 txdl_size = MAX_SKB_FRAGS * sizeof(struct vxge_hw_fifo_txd);
3649                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3650
3651                 device_config->vp_config[i].fifo.fifo_blocks =
3652                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3653
3654                 device_config->vp_config[i].fifo.intr =
3655                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3656
3657                 /* Configure tti properties */
3658                 device_config->vp_config[i].tti.intr_enable =
3659                                         VXGE_HW_TIM_INTR_ENABLE;
3660
3661                 device_config->vp_config[i].tti.btimer_val =
3662                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3663
3664                 device_config->vp_config[i].tti.timer_ac_en =
3665                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3666
3667                 /* For msi-x with napi (each vector
3668                 has a handler of its own) -
3669                 Set CI to OFF for all vpaths */
3670                 device_config->vp_config[i].tti.timer_ci_en =
3671                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3672
3673                 device_config->vp_config[i].tti.timer_ri_en =
3674                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3675
3676                 device_config->vp_config[i].tti.util_sel =
3677                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3678
3679                 device_config->vp_config[i].tti.ltimer_val =
3680                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3681
3682                 device_config->vp_config[i].tti.rtimer_val =
3683                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3684
3685                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3686                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3687                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3688                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3689                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3690                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3691                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3692
3693                 /* Configure Rx rings */
3694                 device_config->vp_config[i].ring.enable  =
3695                                                 VXGE_HW_RING_ENABLE;
3696
3697                 device_config->vp_config[i].ring.ring_blocks  =
3698                                                 VXGE_HW_DEF_RING_BLOCKS;
3699                 device_config->vp_config[i].ring.buffer_mode =
3700                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3701                 device_config->vp_config[i].ring.rxds_limit  =
3702                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3703                 device_config->vp_config[i].ring.scatter_mode =
3704                                         VXGE_HW_RING_SCATTER_MODE_A;
3705
3706                 /* Configure rti properties */
3707                 device_config->vp_config[i].rti.intr_enable =
3708                                         VXGE_HW_TIM_INTR_ENABLE;
3709
3710                 device_config->vp_config[i].rti.btimer_val =
3711                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3712
3713                 device_config->vp_config[i].rti.timer_ac_en =
3714                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3715
3716                 device_config->vp_config[i].rti.timer_ci_en =
3717                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3718
3719                 device_config->vp_config[i].rti.timer_ri_en =
3720                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3721
3722                 device_config->vp_config[i].rti.util_sel =
3723                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3724
3725                 device_config->vp_config[i].rti.urange_a =
3726                                                 RTI_RX_URANGE_A;
3727                 device_config->vp_config[i].rti.urange_b =
3728                                                 RTI_RX_URANGE_B;
3729                 device_config->vp_config[i].rti.urange_c =
3730                                                 RTI_RX_URANGE_C;
3731                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3732                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3733                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3734                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3735
3736                 device_config->vp_config[i].rti.rtimer_val =
3737                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3738
3739                 device_config->vp_config[i].rti.ltimer_val =
3740                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3741
3742                 device_config->vp_config[i].rpa_strip_vlan_tag =
3743                         vlan_tag_strip;
3744         }
3745
3746         driver_config->vpath_per_dev = temp;
3747         return no_of_vpaths;
3748 }
3749
3750 /* initialize device configuratrions */
3751 static void __devinit vxge_device_config_init(
3752                                 struct vxge_hw_device_config *device_config,
3753                                 int *intr_type)
3754 {
3755         /* Used for CQRQ/SRQ. */
3756         device_config->dma_blockpool_initial =
3757                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3758
3759         device_config->dma_blockpool_max =
3760                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3761
3762         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3763                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3764
3765 #ifndef CONFIG_PCI_MSI
3766         vxge_debug_init(VXGE_ERR,
3767                 "%s: This Kernel does not support "
3768                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3769         *intr_type = INTA;
3770 #endif
3771
3772         /* Configure whether MSI-X or IRQL. */
3773         switch (*intr_type) {
3774         case INTA:
3775                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3776                 break;
3777
3778         case MSI_X:
3779                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3780                 break;
3781         }
3782         /* Timer period between device poll */
3783         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3784
3785         /* Configure mac based steering. */
3786         device_config->rts_mac_en = addr_learn_en;
3787
3788         /* Configure Vpaths */
3789         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3790
3791         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3792                         __func__);
3793         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3794                         device_config->dma_blockpool_initial);
3795         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3796                         device_config->dma_blockpool_max);
3797         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3798                         device_config->intr_mode);
3799         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3800                         device_config->device_poll_millis);
3801         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3802                         device_config->rts_mac_en);
3803         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3804                         device_config->rth_en);
3805         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3806                         device_config->rth_it_type);
3807 }
3808
3809 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3810 {
3811         int i;
3812
3813         vxge_debug_init(VXGE_TRACE,
3814                 "%s: %d Vpath(s) opened",
3815                 vdev->ndev->name, vdev->no_of_vpath);
3816
3817         switch (vdev->config.intr_type) {
3818         case INTA:
3819                 vxge_debug_init(VXGE_TRACE,
3820                         "%s: Interrupt type INTA", vdev->ndev->name);
3821                 break;
3822
3823         case MSI_X:
3824                 vxge_debug_init(VXGE_TRACE,
3825                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3826                 break;
3827         }
3828
3829         if (vdev->config.rth_steering) {
3830                 vxge_debug_init(VXGE_TRACE,
3831                         "%s: RTH steering enabled for TCP_IPV4",
3832                         vdev->ndev->name);
3833         } else {
3834                 vxge_debug_init(VXGE_TRACE,
3835                         "%s: RTH steering disabled", vdev->ndev->name);
3836         }
3837
3838         switch (vdev->config.tx_steering_type) {
3839         case NO_STEERING:
3840                 vxge_debug_init(VXGE_TRACE,
3841                         "%s: Tx steering disabled", vdev->ndev->name);
3842                 break;
3843         case TX_PRIORITY_STEERING:
3844                 vxge_debug_init(VXGE_TRACE,
3845                         "%s: Unsupported tx steering option",
3846                         vdev->ndev->name);
3847                 vxge_debug_init(VXGE_TRACE,
3848                         "%s: Tx steering disabled", vdev->ndev->name);
3849                 vdev->config.tx_steering_type = 0;
3850                 break;
3851         case TX_VLAN_STEERING:
3852                 vxge_debug_init(VXGE_TRACE,
3853                         "%s: Unsupported tx steering option",
3854                         vdev->ndev->name);
3855                 vxge_debug_init(VXGE_TRACE,
3856                         "%s: Tx steering disabled", vdev->ndev->name);
3857                 vdev->config.tx_steering_type = 0;
3858                 break;
3859         case TX_MULTIQ_STEERING:
3860                 vxge_debug_init(VXGE_TRACE,
3861                         "%s: Tx multiqueue steering enabled",
3862                         vdev->ndev->name);
3863                 break;
3864         case TX_PORT_STEERING:
3865                 vxge_debug_init(VXGE_TRACE,
3866                         "%s: Tx port steering enabled",
3867                         vdev->ndev->name);
3868                 break;
3869         default:
3870                 vxge_debug_init(VXGE_ERR,
3871                         "%s: Unsupported tx steering type",
3872                         vdev->ndev->name);
3873                 vxge_debug_init(VXGE_TRACE,
3874                         "%s: Tx steering disabled", vdev->ndev->name);
3875                 vdev->config.tx_steering_type = 0;
3876         }
3877
3878         if (vdev->config.gro_enable) {
3879                 vxge_debug_init(VXGE_ERR,
3880                         "%s: Generic receive offload enabled",
3881                         vdev->ndev->name);
3882         } else
3883                 vxge_debug_init(VXGE_TRACE,
3884                         "%s: Generic receive offload disabled",
3885                         vdev->ndev->name);
3886
3887         if (vdev->config.addr_learn_en)
3888                 vxge_debug_init(VXGE_TRACE,
3889                         "%s: MAC Address learning enabled", vdev->ndev->name);
3890
3891         vxge_debug_init(VXGE_TRACE,
3892                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3893
3894         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3895                 if (!vxge_bVALn(vpath_mask, i, 1))
3896                         continue;
3897                 vxge_debug_ll_config(VXGE_TRACE,
3898                         "%s: MTU size - %d", vdev->ndev->name,
3899                         ((struct __vxge_hw_device  *)(vdev->devh))->
3900                                 config.vp_config[i].mtu);
3901                 vxge_debug_init(VXGE_TRACE,
3902                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3903                         ((struct __vxge_hw_device  *)(vdev->devh))->
3904                                 config.vp_config[i].rpa_strip_vlan_tag
3905                         ? "Enabled" : "Disabled");
3906                 vxge_debug_init(VXGE_TRACE,
3907                         "%s: Ring blocks : %d", vdev->ndev->name,
3908                         ((struct __vxge_hw_device  *)(vdev->devh))->
3909                                 config.vp_config[i].ring.ring_blocks);
3910                 vxge_debug_init(VXGE_TRACE,
3911                         "%s: Fifo blocks : %d", vdev->ndev->name,
3912                         ((struct __vxge_hw_device  *)(vdev->devh))->
3913                                 config.vp_config[i].fifo.fifo_blocks);
3914                 vxge_debug_ll_config(VXGE_TRACE,
3915                         "%s: Max frags : %d", vdev->ndev->name,
3916                         ((struct __vxge_hw_device  *)(vdev->devh))->
3917                                 config.vp_config[i].fifo.max_frags);
3918                 break;
3919         }
3920 }
3921
3922 #ifdef CONFIG_PM
3923 /**
3924  * vxge_pm_suspend - vxge power management suspend entry point
3925  *
3926  */
3927 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3928 {
3929         return -ENOSYS;
3930 }
3931 /**
3932  * vxge_pm_resume - vxge power management resume entry point
3933  *
3934  */
3935 static int vxge_pm_resume(struct pci_dev *pdev)
3936 {
3937         return -ENOSYS;
3938 }
3939
3940 #endif
3941
3942 /**
3943  * vxge_io_error_detected - called when PCI error is detected
3944  * @pdev: Pointer to PCI device
3945  * @state: The current pci connection state
3946  *
3947  * This function is called after a PCI bus error affecting
3948  * this device has been detected.
3949  */
3950 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3951                                                 pci_channel_state_t state)
3952 {
3953         struct __vxge_hw_device  *hldev =
3954                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3955         struct net_device *netdev = hldev->ndev;
3956
3957         netif_device_detach(netdev);
3958
3959         if (netif_running(netdev)) {
3960                 /* Bring down the card, while avoiding PCI I/O */
3961                 do_vxge_close(netdev, 0);
3962         }
3963
3964         pci_disable_device(pdev);
3965
3966         return PCI_ERS_RESULT_NEED_RESET;
3967 }
3968
3969 /**
3970  * vxge_io_slot_reset - called after the pci bus has been reset.
3971  * @pdev: Pointer to PCI device
3972  *
3973  * Restart the card from scratch, as if from a cold-boot.
3974  * At this point, the card has exprienced a hard reset,
3975  * followed by fixups by BIOS, and has its config space
3976  * set up identically to what it was at cold boot.
3977  */
3978 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3979 {
3980         struct __vxge_hw_device  *hldev =
3981                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3982         struct net_device *netdev = hldev->ndev;
3983
3984         struct vxgedev *vdev = netdev_priv(netdev);
3985
3986         if (pci_enable_device(pdev)) {
3987                 printk(KERN_ERR "%s: "
3988                         "Cannot re-enable device after reset\n",
3989                         VXGE_DRIVER_NAME);
3990                 return PCI_ERS_RESULT_DISCONNECT;
3991         }
3992
3993         pci_set_master(pdev);
3994         vxge_reset(vdev);
3995
3996         return PCI_ERS_RESULT_RECOVERED;
3997 }
3998
3999 /**
4000  * vxge_io_resume - called when traffic can start flowing again.
4001  * @pdev: Pointer to PCI device
4002  *
4003  * This callback is called when the error recovery driver tells
4004  * us that its OK to resume normal operation.
4005  */
4006 static void vxge_io_resume(struct pci_dev *pdev)
4007 {
4008         struct __vxge_hw_device  *hldev =
4009                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4010         struct net_device *netdev = hldev->ndev;
4011
4012         if (netif_running(netdev)) {
4013                 if (vxge_open(netdev)) {
4014                         printk(KERN_ERR "%s: "
4015                                 "Can't bring device back up after reset\n",
4016                                 VXGE_DRIVER_NAME);
4017                         return;
4018                 }
4019         }
4020
4021         netif_device_attach(netdev);
4022 }
4023
4024 /**
4025  * vxge_probe
4026  * @pdev : structure containing the PCI related information of the device.
4027  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4028  * Description:
4029  * This function is called when a new PCI device gets detected and initializes
4030  * it.
4031  * Return value:
4032  * returns 0 on success and negative on failure.
4033  *
4034  */
4035 static int __devinit
4036 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4037 {
4038         struct __vxge_hw_device  *hldev;
4039         enum vxge_hw_status status;
4040         int ret;
4041         int high_dma = 0;
4042         u64 vpath_mask = 0;
4043         struct vxgedev *vdev;
4044         struct vxge_config ll_config;
4045         struct vxge_hw_device_config *device_config = NULL;
4046         struct vxge_hw_device_attr attr;
4047         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4048         u8 *macaddr;
4049         struct vxge_mac_addrs *entry;
4050         static int bus = -1, device = -1;
4051         u8 new_device = 0;
4052
4053         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4054         attr.pdev = pdev;
4055
4056         if (bus != pdev->bus->number)
4057                 new_device = 1;
4058         if (device != PCI_SLOT(pdev->devfn))
4059                 new_device = 1;
4060
4061         bus = pdev->bus->number;
4062         device = PCI_SLOT(pdev->devfn);
4063
4064         if (new_device) {
4065                 if (driver_config->config_dev_cnt &&
4066                    (driver_config->config_dev_cnt !=
4067                         driver_config->total_dev_cnt))
4068                         vxge_debug_init(VXGE_ERR,
4069                                 "%s: Configured %d of %d devices",
4070                                 VXGE_DRIVER_NAME,
4071                                 driver_config->config_dev_cnt,
4072                                 driver_config->total_dev_cnt);
4073                 driver_config->config_dev_cnt = 0;
4074                 driver_config->total_dev_cnt = 0;
4075                 driver_config->g_no_cpus = 0;
4076                 driver_config->vpath_per_dev = max_config_vpath;
4077         }
4078
4079         driver_config->total_dev_cnt++;
4080         if (++driver_config->config_dev_cnt > max_config_dev) {
4081                 ret = 0;
4082                 goto _exit0;
4083         }
4084
4085         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4086                 GFP_KERNEL);
4087         if (!device_config) {
4088                 ret = -ENOMEM;
4089                 vxge_debug_init(VXGE_ERR,
4090                         "device_config : malloc failed %s %d",
4091                         __FILE__, __LINE__);
4092                 goto _exit0;
4093         }
4094
4095         memset(&ll_config, 0, sizeof(struct vxge_config));
4096         ll_config.tx_steering_type = TX_MULTIQ_STEERING;
4097         ll_config.intr_type = MSI_X;
4098         ll_config.napi_weight = NEW_NAPI_WEIGHT;
4099         ll_config.rth_steering = RTH_STEERING;
4100
4101         /* get the default configuration parameters */
4102         vxge_hw_device_config_default_get(device_config);
4103
4104         /* initialize configuration parameters */
4105         vxge_device_config_init(device_config, &ll_config.intr_type);
4106
4107         ret = pci_enable_device(pdev);
4108         if (ret) {
4109                 vxge_debug_init(VXGE_ERR,
4110                         "%s : can not enable PCI device", __func__);
4111                 goto _exit0;
4112         }
4113
4114         if (!pci_set_dma_mask(pdev, 0xffffffffffffffffULL)) {
4115                 vxge_debug_ll_config(VXGE_TRACE,
4116                         "%s : using 64bit DMA", __func__);
4117
4118                 high_dma = 1;
4119
4120                 if (pci_set_consistent_dma_mask(pdev,
4121                                                 0xffffffffffffffffULL)) {
4122                         vxge_debug_init(VXGE_ERR,
4123                                 "%s : unable to obtain 64bit DMA for "
4124                                 "consistent allocations", __func__);
4125                         ret = -ENOMEM;
4126                         goto _exit1;
4127                 }
4128         } else if (!pci_set_dma_mask(pdev, 0xffffffffUL)) {
4129                 vxge_debug_ll_config(VXGE_TRACE,
4130                         "%s : using 32bit DMA", __func__);
4131         } else {
4132                 ret = -ENOMEM;
4133                 goto _exit1;
4134         }
4135
4136         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4137                 vxge_debug_init(VXGE_ERR,
4138                         "%s : request regions failed", __func__);
4139                 ret = -ENODEV;
4140                 goto _exit1;
4141         }
4142
4143         pci_set_master(pdev);
4144
4145         attr.bar0 = pci_ioremap_bar(pdev, 0);
4146         if (!attr.bar0) {
4147                 vxge_debug_init(VXGE_ERR,
4148                         "%s : cannot remap io memory bar0", __func__);
4149                 ret = -ENODEV;
4150                 goto _exit2;
4151         }
4152         vxge_debug_ll_config(VXGE_TRACE,
4153                 "pci ioremap bar0: %p:0x%llx",
4154                 attr.bar0,
4155                 (unsigned long long)pci_resource_start(pdev, 0));
4156
4157         status = vxge_hw_device_hw_info_get(attr.bar0,
4158                         &ll_config.device_hw_info);
4159         if (status != VXGE_HW_OK) {
4160                 vxge_debug_init(VXGE_ERR,
4161                         "%s: Reading of hardware info failed."
4162                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4163                 ret = -EINVAL;
4164                 goto _exit3;
4165         }
4166
4167         if (ll_config.device_hw_info.fw_version.major !=
4168                 VXGE_DRIVER_FW_VERSION_MAJOR) {
4169                 vxge_debug_init(VXGE_ERR,
4170                         "%s: Incorrect firmware version."
4171                         "Please upgrade the firmware to version 1.x.x",
4172                         VXGE_DRIVER_NAME);
4173                 ret = -EINVAL;
4174                 goto _exit3;
4175         }
4176
4177         vpath_mask = ll_config.device_hw_info.vpath_mask;
4178         if (vpath_mask == 0) {
4179                 vxge_debug_ll_config(VXGE_TRACE,
4180                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4181                 ret = -EINVAL;
4182                 goto _exit3;
4183         }
4184
4185         vxge_debug_ll_config(VXGE_TRACE,
4186                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4187                 (unsigned long long)vpath_mask);
4188
4189         /* Check how many vpaths are available */
4190         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4191                 if (!((vpath_mask) & vxge_mBIT(i)))
4192                         continue;
4193                 max_vpath_supported++;
4194         }
4195
4196         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4197         if ((VXGE_HW_FUNCTION_MODE_SRIOV ==
4198                 ll_config.device_hw_info.function_mode) &&
4199                 (max_config_dev > 1) && (pdev->is_physfn)) {
4200                         ret = pci_enable_sriov(pdev, max_config_dev - 1);
4201                         if (ret)
4202                                 vxge_debug_ll_config(VXGE_ERR,
4203                                         "Failed to enable SRIOV: %d \n", ret);
4204         }
4205
4206         /*
4207          * Configure vpaths and get driver configured number of vpaths
4208          * which is less than or equal to the maximum vpaths per function.
4209          */
4210         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
4211         if (!no_of_vpath) {
4212                 vxge_debug_ll_config(VXGE_ERR,
4213                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4214                 ret = 0;
4215                 goto _exit3;
4216         }
4217
4218         /* Setting driver callbacks */
4219         attr.uld_callbacks.link_up = vxge_callback_link_up;
4220         attr.uld_callbacks.link_down = vxge_callback_link_down;
4221         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4222
4223         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4224         if (status != VXGE_HW_OK) {
4225                 vxge_debug_init(VXGE_ERR,
4226                         "Failed to initialize device (%d)", status);
4227                         ret = -EINVAL;
4228                         goto _exit3;
4229         }
4230
4231         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4232
4233         /* set private device info */
4234         pci_set_drvdata(pdev, hldev);
4235
4236         ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4237         ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4238         ll_config.addr_learn_en = addr_learn_en;
4239         ll_config.rth_algorithm = RTH_ALG_JENKINS;
4240         ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4241         ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4242         ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4243         ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4244         ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4245         ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4246         ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
4247         ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4248         ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4249
4250         if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
4251                 &vdev)) {
4252                 ret = -EINVAL;
4253                 goto _exit4;
4254         }
4255
4256         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4257         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4258                 vxge_hw_device_trace_level_get(hldev));
4259
4260         /* set private HW device info */
4261         hldev->ndev = vdev->ndev;
4262         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4263         vdev->bar0 = attr.bar0;
4264         vdev->max_vpath_supported = max_vpath_supported;
4265         vdev->no_of_vpath = no_of_vpath;
4266
4267         /* Virtual Path count */
4268         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4269                 if (!vxge_bVALn(vpath_mask, i, 1))
4270                         continue;
4271                 if (j >= vdev->no_of_vpath)
4272                         break;
4273
4274                 vdev->vpaths[j].is_configured = 1;
4275                 vdev->vpaths[j].device_id = i;
4276                 vdev->vpaths[j].fifo.driver_id = j;
4277                 vdev->vpaths[j].ring.driver_id = j;
4278                 vdev->vpaths[j].vdev = vdev;
4279                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4280                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4281                                 (u8 *)ll_config.device_hw_info.mac_addrs[i],
4282                                 ETH_ALEN);
4283
4284                 /* Initialize the mac address list header */
4285                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4286
4287                 vdev->vpaths[j].mac_addr_cnt = 0;
4288                 vdev->vpaths[j].mcast_addr_cnt = 0;
4289                 j++;
4290         }
4291         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4292         vdev->max_config_port = max_config_port;
4293
4294         vdev->vlan_tag_strip = vlan_tag_strip;
4295
4296         /* map the hashing selector table to the configured vpaths */
4297         for (i = 0; i < vdev->no_of_vpath; i++)
4298                 vdev->vpath_selector[i] = vpath_selector[i];
4299
4300         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4301
4302         ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4303         ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4304         ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4305
4306         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4307                 vdev->ndev->name, ll_config.device_hw_info.serial_number);
4308
4309         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4310                 vdev->ndev->name, ll_config.device_hw_info.part_number);
4311
4312         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4313                 vdev->ndev->name, ll_config.device_hw_info.product_desc);
4314
4315         vxge_debug_init(VXGE_TRACE,
4316                 "%s: MAC ADDR: %02X:%02X:%02X:%02X:%02X:%02X",
4317                 vdev->ndev->name, macaddr[0], macaddr[1], macaddr[2],
4318                 macaddr[3], macaddr[4], macaddr[5]);
4319
4320         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4321                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4322
4323         vxge_debug_init(VXGE_TRACE,
4324                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4325                 ll_config.device_hw_info.fw_version.version,
4326                 ll_config.device_hw_info.fw_date.date);
4327
4328         if (new_device) {
4329                 switch (ll_config.device_hw_info.function_mode) {
4330                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4331                         vxge_debug_init(VXGE_TRACE,
4332                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4333                 break;
4334                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4335                         vxge_debug_init(VXGE_TRACE,
4336                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4337                 break;
4338                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4339                         vxge_debug_init(VXGE_TRACE,
4340                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4341                 break;
4342                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4343                         vxge_debug_init(VXGE_TRACE,
4344                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4345                 break;
4346                 }
4347         }
4348
4349         vxge_print_parm(vdev, vpath_mask);
4350
4351         /* Store the fw version for ethttool option */
4352         strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
4353         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4354         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4355
4356         /* Copy the station mac address to the list */
4357         for (i = 0; i < vdev->no_of_vpath; i++) {
4358                 entry = (struct vxge_mac_addrs *)
4359                                 kzalloc(sizeof(struct vxge_mac_addrs),
4360                                         GFP_KERNEL);
4361                 if (NULL == entry) {
4362                         vxge_debug_init(VXGE_ERR,
4363                                 "%s: mac_addr_list : memory allocation failed",
4364                                 vdev->ndev->name);
4365                         ret = -EPERM;
4366                         goto _exit5;
4367                 }
4368                 macaddr = (u8 *)&entry->macaddr;
4369                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4370                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4371                 vdev->vpaths[i].mac_addr_cnt = 1;
4372         }
4373
4374         kfree(device_config);
4375         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4376                 vdev->ndev->name, __func__, __LINE__);
4377
4378         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4379         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4380                 vxge_hw_device_trace_level_get(hldev));
4381
4382         return 0;
4383
4384 _exit5:
4385         for (i = 0; i < vdev->no_of_vpath; i++)
4386                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4387
4388         vxge_device_unregister(hldev);
4389 _exit4:
4390         pci_disable_sriov(pdev);
4391         vxge_hw_device_terminate(hldev);
4392 _exit3:
4393         iounmap(attr.bar0);
4394 _exit2:
4395         pci_release_regions(pdev);
4396 _exit1:
4397         pci_disable_device(pdev);
4398 _exit0:
4399         kfree(device_config);
4400         driver_config->config_dev_cnt--;
4401         pci_set_drvdata(pdev, NULL);
4402         return ret;
4403 }
4404
4405 /**
4406  * vxge_rem_nic - Free the PCI device
4407  * @pdev: structure containing the PCI related information of the device.
4408  * Description: This function is called by the Pci subsystem to release a
4409  * PCI device and free up all resource held up by the device.
4410  */
4411 static void __devexit
4412 vxge_remove(struct pci_dev *pdev)
4413 {
4414         struct __vxge_hw_device  *hldev;
4415         struct vxgedev *vdev = NULL;
4416         struct net_device *dev;
4417         int i = 0;
4418 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4419         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4420         u32 level_trace;
4421 #endif
4422
4423         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4424
4425         if (hldev == NULL)
4426                 return;
4427         dev = hldev->ndev;
4428         vdev = netdev_priv(dev);
4429
4430 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4431         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4432         level_trace = vdev->level_trace;
4433 #endif
4434         vxge_debug_entryexit(level_trace,
4435                 "%s:%d", __func__, __LINE__);
4436
4437         vxge_debug_init(level_trace,
4438                 "%s : removing PCI device...", __func__);
4439         vxge_device_unregister(hldev);
4440
4441         for (i = 0; i < vdev->no_of_vpath; i++) {
4442                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4443                 vdev->vpaths[i].mcast_addr_cnt = 0;
4444                 vdev->vpaths[i].mac_addr_cnt = 0;
4445         }
4446
4447         kfree(vdev->vpaths);
4448
4449         iounmap(vdev->bar0);
4450
4451         pci_disable_sriov(pdev);
4452
4453         /* we are safe to free it now */
4454         free_netdev(dev);
4455
4456         vxge_debug_init(level_trace,
4457                 "%s:%d  Device unregistered", __func__, __LINE__);
4458
4459         vxge_hw_device_terminate(hldev);
4460
4461         pci_disable_device(pdev);
4462         pci_release_regions(pdev);
4463         pci_set_drvdata(pdev, NULL);
4464         vxge_debug_entryexit(level_trace,
4465                 "%s:%d  Exiting...", __func__, __LINE__);
4466 }
4467
4468 static struct pci_error_handlers vxge_err_handler = {
4469         .error_detected = vxge_io_error_detected,
4470         .slot_reset = vxge_io_slot_reset,
4471         .resume = vxge_io_resume,
4472 };
4473
4474 static struct pci_driver vxge_driver = {
4475         .name = VXGE_DRIVER_NAME,
4476         .id_table = vxge_id_table,
4477         .probe = vxge_probe,
4478         .remove = __devexit_p(vxge_remove),
4479 #ifdef CONFIG_PM
4480         .suspend = vxge_pm_suspend,
4481         .resume = vxge_pm_resume,
4482 #endif
4483         .err_handler = &vxge_err_handler,
4484 };
4485
4486 static int __init
4487 vxge_starter(void)
4488 {
4489         int ret = 0;
4490         char version[32];
4491         snprintf(version, 32, "%s", DRV_VERSION);
4492
4493         printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4494                 VXGE_DRIVER_NAME);
4495         printk(KERN_CRIT "%s: Driver version: %s\n",
4496                         VXGE_DRIVER_NAME, version);
4497
4498         verify_bandwidth();
4499
4500         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4501         if (!driver_config)
4502                 return -ENOMEM;
4503
4504         ret = pci_register_driver(&vxge_driver);
4505
4506         if (driver_config->config_dev_cnt &&
4507            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4508                 vxge_debug_init(VXGE_ERR,
4509                         "%s: Configured %d of %d devices",
4510                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4511                         driver_config->total_dev_cnt);
4512
4513         if (ret)
4514                 kfree(driver_config);
4515
4516         return ret;
4517 }
4518
4519 static void __exit
4520 vxge_closer(void)
4521 {
4522         pci_unregister_driver(&vxge_driver);
4523         kfree(driver_config);
4524 }
4525 module_init(vxge_starter);
4526 module_exit(vxge_closer);