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