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 DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
  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;
  92 #define NR_SKB_COMPLETED 128
  93         struct sk_buff *completed[NR_SKB_COMPLETED];
  94         int more;
  95
  96         do {
  97                 more = 0;
  98                 skb_ptr = completed;
  99
 100                 if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
 101                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 102                                                 NR_SKB_COMPLETED, &more);
 103                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 104                 }
 105                 /* free SKBs */
 106                 for (temp = completed; temp != skb_ptr; temp++)
 107                         dev_kfree_skb_irq(*temp);
 108         } while (more) ;
 109 }
 110
 111 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 112 {
 113         int i;
 114
 115         /* Complete all transmits */
 116         for (i = 0; i < vdev->no_of_vpath; i++)
 117                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 118 }
 119
 120 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 121 {
 122         int i;
 123         struct vxge_ring *ring;
 124
 125         /* Complete all receives*/
 126         for (i = 0; i < vdev->no_of_vpath; i++) {
 127                 ring = &vdev->vpaths[i].ring;
 128                 vxge_hw_vpath_poll_rx(ring->handle);
 129         }
 130 }
 131
 132 /*
 133  * MultiQ manipulation helper functions
 134  */
 135 void vxge_stop_all_tx_queue(struct vxgedev *vdev)
 136 {
 137         int i;
 138         struct net_device *dev = vdev->ndev;
 139
 140         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 141                 for (i = 0; i < vdev->no_of_vpath; i++)
 142                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP;
 143         }
 144         netif_tx_stop_all_queues(dev);
 145 }
 146
 147 void vxge_stop_tx_queue(struct vxge_fifo *fifo)
 148 {
 149         struct net_device *dev = fifo->ndev;
 150
 151         struct netdev_queue *txq = NULL;
 152         if (fifo->tx_steering_type == TX_MULTIQ_STEERING)
 153                 txq = netdev_get_tx_queue(dev, fifo->driver_id);
 154         else {
 155                 txq = netdev_get_tx_queue(dev, 0);
 156                 fifo->queue_state = VPATH_QUEUE_STOP;
 157         }
 158
 159         netif_tx_stop_queue(txq);
 160 }
 161
 162 void vxge_start_all_tx_queue(struct vxgedev *vdev)
 163 {
 164         int i;
 165         struct net_device *dev = vdev->ndev;
 166
 167         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 168                 for (i = 0; i < vdev->no_of_vpath; i++)
 169                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
 170         }
 171         netif_tx_start_all_queues(dev);
 172 }
 173
 174 static void vxge_wake_all_tx_queue(struct vxgedev *vdev)
 175 {
 176         int i;
 177         struct net_device *dev = vdev->ndev;
 178
 179         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 180                 for (i = 0; i < vdev->no_of_vpath; i++)
 181                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
 182         }
 183         netif_tx_wake_all_queues(dev);
 184 }
 185
 186 void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb)
 187 {
 188         struct net_device *dev = fifo->ndev;
 189
 190         int vpath_no = fifo->driver_id;
 191         struct netdev_queue *txq = NULL;
 192         if (fifo->tx_steering_type == TX_MULTIQ_STEERING) {
 193                 txq = netdev_get_tx_queue(dev, vpath_no);
 194                 if (netif_tx_queue_stopped(txq))
 195                         netif_tx_wake_queue(txq);
 196         } else {
 197                 txq = netdev_get_tx_queue(dev, 0);
 198                 if (fifo->queue_state == VPATH_QUEUE_STOP)
 199                         if (netif_tx_queue_stopped(txq)) {
 200                                 fifo->queue_state = VPATH_QUEUE_START;
 201                                 netif_tx_wake_queue(txq);
 202                         }
 203         }
 204 }
 205
 206 /*
 207  * vxge_callback_link_up
 208  *
 209  * This function is called during interrupt context to notify link up state
 210  * change.
 211  */
 212 void
 213 vxge_callback_link_up(struct __vxge_hw_device *hldev)
 214 {
 215         struct net_device *dev = hldev->ndev;
 216         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 217
 218         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 219                 vdev->ndev->name, __func__, __LINE__);
 220         printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
 221         vdev->stats.link_up++;
 222
 223         netif_carrier_on(vdev->ndev);
 224         vxge_wake_all_tx_queue(vdev);
 225
 226         vxge_debug_entryexit(VXGE_TRACE,
 227                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 228 }
 229
 230 /*
 231  * vxge_callback_link_down
 232  *
 233  * This function is called during interrupt context to notify link down state
 234  * change.
 235  */
 236 void
 237 vxge_callback_link_down(struct __vxge_hw_device *hldev)
 238 {
 239         struct net_device *dev = hldev->ndev;
 240         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 241
 242         vxge_debug_entryexit(VXGE_TRACE,
 243                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 244         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
 245
 246         vdev->stats.link_down++;
 247         netif_carrier_off(vdev->ndev);
 248         vxge_stop_all_tx_queue(vdev);
 249
 250         vxge_debug_entryexit(VXGE_TRACE,
 251                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 252 }
 253
 254 /*
 255  * vxge_rx_alloc
 256  *
 257  * Allocate SKB.
 258  */
 259 static struct sk_buff*
 260 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 261 {
 262         struct net_device    *dev;
 263         struct sk_buff       *skb;
 264         struct vxge_rx_priv *rx_priv;
 265
 266         dev = ring->ndev;
 267         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 268                 ring->ndev->name, __func__, __LINE__);
 269
 270         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 271
 272         /* try to allocate skb first. this one may fail */
 273         skb = netdev_alloc_skb(dev, skb_size +
 274         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 275         if (skb == NULL) {
 276                 vxge_debug_mem(VXGE_ERR,
 277                         "%s: out of memory to allocate SKB", dev->name);
 278                 ring->stats.skb_alloc_fail++;
 279                 return NULL;
 280         }
 281
 282         vxge_debug_mem(VXGE_TRACE,
 283                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 284                 __func__, __LINE__, skb);
 285
 286         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 287
 288         rx_priv->skb = skb;
 289         rx_priv->skb_data = NULL;
 290         rx_priv->data_size = skb_size;
 291         vxge_debug_entryexit(VXGE_TRACE,
 292                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 293
 294         return skb;
 295 }
 296
 297 /*
 298  * vxge_rx_map
 299  */
 300 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 301 {
 302         struct vxge_rx_priv *rx_priv;
 303         dma_addr_t dma_addr;
 304
 305         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 306                 ring->ndev->name, __func__, __LINE__);
 307         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 308
 309         rx_priv->skb_data = rx_priv->skb->data;
 310         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 311                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 312
 313         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 314                 ring->stats.pci_map_fail++;
 315                 return -EIO;
 316         }
 317         vxge_debug_mem(VXGE_TRACE,
 318                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 319                 ring->ndev->name, __func__, __LINE__,
 320                 (unsigned long long)dma_addr);
 321         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 322
 323         rx_priv->data_dma = dma_addr;
 324         vxge_debug_entryexit(VXGE_TRACE,
 325                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 326
 327         return 0;
 328 }
 329
 330 /*
 331  * vxge_rx_initial_replenish
 332  * Allocation of RxD as an initial replenish procedure.
 333  */
 334 static enum vxge_hw_status
 335 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 336 {
 337         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 338         struct vxge_rx_priv *rx_priv;
 339
 340         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 341                 ring->ndev->name, __func__, __LINE__);
 342         if (vxge_rx_alloc(dtrh, ring,
 343                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 344                 return VXGE_HW_FAIL;
 345
 346         if (vxge_rx_map(dtrh, ring)) {
 347                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 348                 dev_kfree_skb(rx_priv->skb);
 349
 350                 return VXGE_HW_FAIL;
 351         }
 352         vxge_debug_entryexit(VXGE_TRACE,
 353                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 354
 355         return VXGE_HW_OK;
 356 }
 357
 358 static inline void
 359 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 360                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 361 {
 362
 363         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 364                         ring->ndev->name, __func__, __LINE__);
 365         skb_record_rx_queue(skb, ring->driver_id);
 366         skb->protocol = eth_type_trans(skb, ring->ndev);
 367
 368         ring->stats.rx_frms++;
 369         ring->stats.rx_bytes += pkt_length;
 370
 371         if (skb->pkt_type == PACKET_MULTICAST)
 372                 ring->stats.rx_mcast++;
 373
 374         vxge_debug_rx(VXGE_TRACE,
 375                 "%s: %s:%d  skb protocol = %d",
 376                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 377
 378         if (ring->gro_enable) {
 379                 if (ring->vlgrp && ext_info->vlan &&
 380                         (ring->vlan_tag_strip ==
 381                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 382                         vlan_gro_receive(ring->napi_p, ring->vlgrp,
 383                                         ext_info->vlan, skb);
 384                 else
 385                         napi_gro_receive(ring->napi_p, skb);
 386         } else {
 387                 if (ring->vlgrp && vlan &&
 388                         (ring->vlan_tag_strip ==
 389                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 390                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 391                 else
 392                         netif_receive_skb(skb);
 393         }
 394         vxge_debug_entryexit(VXGE_TRACE,
 395                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 396 }
 397
 398 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 399                                     struct vxge_rx_priv *rx_priv)
 400 {
 401         pci_dma_sync_single_for_device(ring->pdev,
 402                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 403
 404         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 405         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 406 }
 407
 408 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 409                              void *post_dtr, struct __vxge_hw_ring *ringh)
 410 {
 411         int dtr_count = *dtr_cnt;
 412         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 413                 if (*first_dtr)
 414                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 415                 *first_dtr = post_dtr;
 416         } else
 417                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 418         dtr_count++;
 419         *dtr_cnt = dtr_count;
 420 }
 421
 422 /*
 423  * vxge_rx_1b_compl
 424  *
 425  * If the interrupt is because of a received frame or if the receive ring
 426  * contains fresh as yet un-processed frames, this function is called.
 427  */
 428 enum vxge_hw_status
 429 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 430                  u8 t_code, void *userdata)
 431 {
 432         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 433         struct  net_device *dev = ring->ndev;
 434         unsigned int dma_sizes;
 435         void *first_dtr = NULL;
 436         int dtr_cnt = 0;
 437         int data_size;
 438         dma_addr_t data_dma;
 439         int pkt_length;
 440         struct sk_buff *skb;
 441         struct vxge_rx_priv *rx_priv;
 442         struct vxge_hw_ring_rxd_info ext_info;
 443         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 444                 ring->ndev->name, __func__, __LINE__);
 445         ring->pkts_processed = 0;
 446
 447         vxge_hw_ring_replenish(ringh);
 448
 449         do {
 450                 prefetch((char *)dtr + L1_CACHE_BYTES);
 451                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 452                 skb = rx_priv->skb;
 453                 data_size = rx_priv->data_size;
 454                 data_dma = rx_priv->data_dma;
 455                 prefetch(rx_priv->skb_data);
 456
 457                 vxge_debug_rx(VXGE_TRACE,
 458                         "%s: %s:%d  skb = 0x%p",
 459                         ring->ndev->name, __func__, __LINE__, skb);
 460
 461                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 462                 pkt_length = dma_sizes;
 463
 464                 pkt_length -= ETH_FCS_LEN;
 465
 466                 vxge_debug_rx(VXGE_TRACE,
 467                         "%s: %s:%d  Packet Length = %d",
 468                         ring->ndev->name, __func__, __LINE__, pkt_length);
 469
 470                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 471
 472                 /* check skb validity */
 473                 vxge_assert(skb);
 474
 475                 prefetch((char *)skb + L1_CACHE_BYTES);
 476                 if (unlikely(t_code)) {
 477
 478                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 479                                 VXGE_HW_OK) {
 480
 481                                 ring->stats.rx_errors++;
 482                                 vxge_debug_rx(VXGE_TRACE,
 483                                         "%s: %s :%d Rx T_code is %d",
 484                                         ring->ndev->name, __func__,
 485                                         __LINE__, t_code);
 486
 487                                 /* If the t_code is not supported and if the
 488                                  * t_code is other than 0x5 (unparseable packet
 489                                  * such as unknown UPV6 header), Drop it !!!
 490                                  */
 491                                 vxge_re_pre_post(dtr, ring, rx_priv);
 492
 493                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 494                                 ring->stats.rx_dropped++;
 495                                 continue;
 496                         }
 497                 }
 498
 499                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 500
 501                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 502
 503                                 if (!vxge_rx_map(dtr, ring)) {
 504                                         skb_put(skb, pkt_length);
 505
 506                                         pci_unmap_single(ring->pdev, data_dma,
 507                                                 data_size, PCI_DMA_FROMDEVICE);
 508
 509                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 510                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 511                                                 ringh);
 512                                 } else {
 513                                         dev_kfree_skb(rx_priv->skb);
 514                                         rx_priv->skb = skb;
 515                                         rx_priv->data_size = data_size;
 516                                         vxge_re_pre_post(dtr, ring, rx_priv);
 517
 518                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 519                                                 ringh);
 520                                         ring->stats.rx_dropped++;
 521                                         break;
 522                                 }
 523                         } else {
 524                                 vxge_re_pre_post(dtr, ring, rx_priv);
 525
 526                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 527                                 ring->stats.rx_dropped++;
 528                                 break;
 529                         }
 530                 } else {
 531                         struct sk_buff *skb_up;
 532
 533                         skb_up = netdev_alloc_skb(dev, pkt_length +
 534                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 535                         if (skb_up != NULL) {
 536                                 skb_reserve(skb_up,
 537                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 538
 539                                 pci_dma_sync_single_for_cpu(ring->pdev,
 540                                         data_dma, data_size,
 541                                         PCI_DMA_FROMDEVICE);
 542
 543                                 vxge_debug_mem(VXGE_TRACE,
 544                                         "%s: %s:%d  skb_up = %p",
 545                                         ring->ndev->name, __func__,
 546                                         __LINE__, skb);
 547                                 memcpy(skb_up->data, skb->data, pkt_length);
 548
 549                                 vxge_re_pre_post(dtr, ring, rx_priv);
 550
 551                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 552                                         ringh);
 553                                 /* will netif_rx small SKB instead */
 554                                 skb = skb_up;
 555                                 skb_put(skb, pkt_length);
 556                         } else {
 557                                 vxge_re_pre_post(dtr, ring, rx_priv);
 558
 559                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 560                                 vxge_debug_rx(VXGE_ERR,
 561                                         "%s: vxge_rx_1b_compl: out of "
 562                                         "memory", dev->name);
 563                                 ring->stats.skb_alloc_fail++;
 564                                 break;
 565                         }
 566                 }
 567
 568                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 569                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 570                     ring->rx_csum && /* Offload Rx side CSUM */
 571                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 572                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 573                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 574                 else
 575                         skb->ip_summed = CHECKSUM_NONE;
 576
 577                 vxge_rx_complete(ring, skb, ext_info.vlan,
 578                         pkt_length, &ext_info);
 579
 580                 ring->budget--;
 581                 ring->pkts_processed++;
 582                 if (!ring->budget)
 583                         break;
 584
 585         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 586                 &t_code) == VXGE_HW_OK);
 587
 588         if (first_dtr)
 589                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 590
 591         vxge_debug_entryexit(VXGE_TRACE,
 592                                 "%s:%d  Exiting...",
 593                                 __func__, __LINE__);
 594         return VXGE_HW_OK;
 595 }
 596
 597 /*
 598  * vxge_xmit_compl
 599  *
 600  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 601  * this function is called. It identifies the last TxD whose buffer was
 602  * freed and frees all skbs whose data have already DMA'ed into the NICs
 603  * internal memory.
 604  */
 605 enum vxge_hw_status
 606 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 607                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 608                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 609 {
 610         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 611         struct sk_buff *skb, **done_skb = *skb_ptr;
 612         int pkt_cnt = 0;
 613
 614         vxge_debug_entryexit(VXGE_TRACE,
 615                 "%s:%d Entered....", __func__, __LINE__);
 616
 617         do {
 618                 int frg_cnt;
 619                 skb_frag_t *frag;
 620                 int i = 0, j;
 621                 struct vxge_tx_priv *txd_priv =
 622                         vxge_hw_fifo_txdl_private_get(dtr);
 623
 624                 skb = txd_priv->skb;
 625                 frg_cnt = skb_shinfo(skb)->nr_frags;
 626                 frag = &skb_shinfo(skb)->frags[0];
 627
 628                 vxge_debug_tx(VXGE_TRACE,
 629                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 630                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 631                                 __LINE__, fifo_hw, dtr, t_code);
 632                 /* check skb validity */
 633                 vxge_assert(skb);
 634                 vxge_debug_tx(VXGE_TRACE,
 635                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 636                         fifo->ndev->name, __func__, __LINE__,
 637                         skb, txd_priv, frg_cnt);
 638                 if (unlikely(t_code)) {
 639                         fifo->stats.tx_errors++;
 640                         vxge_debug_tx(VXGE_ERR,
 641                                 "%s: tx: dtr %p completed due to "
 642                                 "error t_code %01x", fifo->ndev->name,
 643                                 dtr, t_code);
 644                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 645                 }
 646
 647                 /*  for unfragmented skb */
 648                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 649                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 650
 651                 for (j = 0; j < frg_cnt; j++) {
 652                         pci_unmap_page(fifo->pdev,
 653                                         txd_priv->dma_buffers[i++],
 654                                         frag->size, PCI_DMA_TODEVICE);
 655                         frag += 1;
 656                 }
 657
 658                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 659
 660                 /* Updating the statistics block */
 661                 fifo->stats.tx_frms++;
 662                 fifo->stats.tx_bytes += skb->len;
 663
 664                 *done_skb++ = skb;
 665
 666                 if (--nr_skb <= 0) {
 667                         *more = 1;
 668                         break;
 669                 }
 670
 671                 pkt_cnt++;
 672                 if (pkt_cnt > fifo->indicate_max_pkts)
 673                         break;
 674
 675         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 676                                 &dtr, &t_code) == VXGE_HW_OK);
 677
 678         *skb_ptr = done_skb;
 679         vxge_wake_tx_queue(fifo, skb);
 680
 681         vxge_debug_entryexit(VXGE_TRACE,
 682                                 "%s: %s:%d  Exiting...",
 683                                 fifo->ndev->name, __func__, __LINE__);
 684         return VXGE_HW_OK;
 685 }
 686
 687 /* select a vpath to transmit the packet */
 688 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
 689         int *do_lock)
 690 {
 691         u16 queue_len, counter = 0;
 692         if (skb->protocol == htons(ETH_P_IP)) {
 693                 struct iphdr *ip;
 694                 struct tcphdr *th;
 695
 696                 ip = ip_hdr(skb);
 697
 698                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 699                         th = (struct tcphdr *)(((unsigned char *)ip) +
 700                                         ip->ihl*4);
 701
 702                         queue_len = vdev->no_of_vpath;
 703                         counter = (ntohs(th->source) +
 704                                 ntohs(th->dest)) &
 705                                 vdev->vpath_selector[queue_len - 1];
 706                         if (counter >= queue_len)
 707                                 counter = queue_len - 1;
 708
 709                         if (ip->protocol == IPPROTO_UDP) {
 710 #ifdef NETIF_F_LLTX
 711                                 *do_lock = 0;
 712 #endif
 713                         }
 714                 }
 715         }
 716         return counter;
 717 }
 718
 719 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 720         struct vxge_vpath *vpath, u64 del_mac)
 721 {
 722         struct list_head *entry, *next;
 723         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 724                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 725                         return TRUE;
 726         }
 727         return FALSE;
 728 }
 729
 730 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 731 {
 732         struct macInfo mac_info;
 733         u8 *mac_address = NULL;
 734         u64 mac_addr = 0, vpath_vector = 0;
 735         int vpath_idx = 0;
 736         enum vxge_hw_status status = VXGE_HW_OK;
 737         struct vxge_vpath *vpath = NULL;
 738         struct __vxge_hw_device *hldev;
 739
 740         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
 741
 742         mac_address = (u8 *)&mac_addr;
 743         memcpy(mac_address, mac_header, ETH_ALEN);
 744
 745         /* Is this mac address already in the list? */
 746         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 747                 vpath = &vdev->vpaths[vpath_idx];
 748                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 749                         return vpath_idx;
 750         }
 751
 752         memset(&mac_info, 0, sizeof(struct macInfo));
 753         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 754
 755         /* Any vpath has room to add mac address to its da table? */
 756         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 757                 vpath = &vdev->vpaths[vpath_idx];
 758                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 759                         /* Add this mac address to this vpath */
 760                         mac_info.vpath_no = vpath_idx;
 761                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 762                         status = vxge_add_mac_addr(vdev, &mac_info);
 763                         if (status != VXGE_HW_OK)
 764                                 return -EPERM;
 765                         return vpath_idx;
 766                 }
 767         }
 768
 769         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 770         vpath_idx = 0;
 771         mac_info.vpath_no = vpath_idx;
 772         /* Is the first vpath already selected as catch-basin ? */
 773         vpath = &vdev->vpaths[vpath_idx];
 774         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 775                 /* Add this mac address to this vpath */
 776                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 777                         return -EPERM;
 778                 return vpath_idx;
 779         }
 780
 781         /* Select first vpath as catch-basin */
 782         vpath_vector = vxge_mBIT(vpath->device_id);
 783         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 784                                 vxge_hw_mgmt_reg_type_mrpcim,
 785                                 0,
 786                                 (ulong)offsetof(
 787                                         struct vxge_hw_mrpcim_reg,
 788                                         rts_mgr_cbasin_cfg),
 789                                 vpath_vector);
 790         if (status != VXGE_HW_OK) {
 791                 vxge_debug_tx(VXGE_ERR,
 792                         "%s: Unable to set the vpath-%d in catch-basin mode",
 793                         VXGE_DRIVER_NAME, vpath->device_id);
 794                 return -EPERM;
 795         }
 796
 797         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 798                 return -EPERM;
 799
 800         return vpath_idx;
 801 }
 802
 803 /**
 804  * vxge_xmit
 805  * @skb : the socket buffer containing the Tx data.
 806  * @dev : device pointer.
 807  *
 808  * This function is the Tx entry point of the driver. Neterion NIC supports
 809  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 810  * NOTE: when device cant queue the pkt, just the trans_start variable will
 811  * not be upadted.
 812 */
 813 static netdev_tx_t
 814 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 815 {
 816         struct vxge_fifo *fifo = NULL;
 817         void *dtr_priv;
 818         void *dtr = NULL;
 819         struct vxgedev *vdev = NULL;
 820         enum vxge_hw_status status;
 821         int frg_cnt, first_frg_len;
 822         skb_frag_t *frag;
 823         int i = 0, j = 0, avail;
 824         u64 dma_pointer;
 825         struct vxge_tx_priv *txdl_priv = NULL;
 826         struct __vxge_hw_fifo *fifo_hw;
 827         int offload_type;
 828         unsigned long flags = 0;
 829         int vpath_no = 0;
 830         int do_spin_tx_lock = 1;
 831
 832         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 833                         dev->name, __func__, __LINE__);
 834
 835         /* A buffer with no data will be dropped */
 836         if (unlikely(skb->len <= 0)) {
 837                 vxge_debug_tx(VXGE_ERR,
 838                         "%s: Buffer has no data..", dev->name);
 839                 dev_kfree_skb(skb);
 840                 return NETDEV_TX_OK;
 841         }
 842
 843         vdev = (struct vxgedev *)netdev_priv(dev);
 844
 845         if (unlikely(!is_vxge_card_up(vdev))) {
 846                 vxge_debug_tx(VXGE_ERR,
 847                         "%s: vdev not initialized", dev->name);
 848                 dev_kfree_skb(skb);
 849                 return NETDEV_TX_OK;
 850         }
 851
 852         if (vdev->config.addr_learn_en) {
 853                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 854                 if (vpath_no == -EPERM) {
 855                         vxge_debug_tx(VXGE_ERR,
 856                                 "%s: Failed to store the mac address",
 857                                 dev->name);
 858                         dev_kfree_skb(skb);
 859                         return NETDEV_TX_OK;
 860                 }
 861         }
 862
 863         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 864                 vpath_no = skb_get_queue_mapping(skb);
 865         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 866                 vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
 867
 868         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 869
 870         if (vpath_no >= vdev->no_of_vpath)
 871                 vpath_no = 0;
 872
 873         fifo = &vdev->vpaths[vpath_no].fifo;
 874         fifo_hw = fifo->handle;
 875
 876         if (do_spin_tx_lock)
 877                 spin_lock_irqsave(&fifo->tx_lock, flags);
 878         else {
 879                 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
 880                         return NETDEV_TX_LOCKED;
 881         }
 882
 883         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
 884                 if (netif_subqueue_stopped(dev, skb)) {
 885                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 886                         return NETDEV_TX_BUSY;
 887                 }
 888         } else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
 889                 if (netif_queue_stopped(dev)) {
 890                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 891                         return NETDEV_TX_BUSY;
 892                 }
 893         }
 894         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 895         if (avail == 0) {
 896                 vxge_debug_tx(VXGE_ERR,
 897                         "%s: No free TXDs available", dev->name);
 898                 fifo->stats.txd_not_free++;
 899                 vxge_stop_tx_queue(fifo);
 900                 goto _exit2;
 901         }
 902
 903         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 904          * completion will resume the queue.
 905          */
 906         if (avail == 1)
 907                 vxge_stop_tx_queue(fifo);
 908
 909         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 910         if (unlikely(status != VXGE_HW_OK)) {
 911                 vxge_debug_tx(VXGE_ERR,
 912                    "%s: Out of descriptors .", dev->name);
 913                 fifo->stats.txd_out_of_desc++;
 914                 vxge_stop_tx_queue(fifo);
 915                 goto _exit2;
 916         }
 917
 918         vxge_debug_tx(VXGE_TRACE,
 919                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 920                 dev->name, __func__, __LINE__,
 921                 fifo_hw, dtr, dtr_priv);
 922
 923         if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
 924                 u16 vlan_tag = vlan_tx_tag_get(skb);
 925                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 926         }
 927
 928         first_frg_len = skb_headlen(skb);
 929
 930         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 931                                 PCI_DMA_TODEVICE);
 932
 933         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 934                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 935                 vxge_stop_tx_queue(fifo);
 936                 fifo->stats.pci_map_fail++;
 937                 goto _exit2;
 938         }
 939
 940         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 941         txdl_priv->skb = skb;
 942         txdl_priv->dma_buffers[j] = dma_pointer;
 943
 944         frg_cnt = skb_shinfo(skb)->nr_frags;
 945         vxge_debug_tx(VXGE_TRACE,
 946                         "%s: %s:%d skb = %p txdl_priv = %p "
 947                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 948                         __func__, __LINE__, skb, txdl_priv,
 949                         frg_cnt, (unsigned long long)dma_pointer);
 950
 951         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 952                 first_frg_len);
 953
 954         frag = &skb_shinfo(skb)->frags[0];
 955         for (i = 0; i < frg_cnt; i++) {
 956                 /* ignore 0 length fragment */
 957                 if (!frag->size)
 958                         continue;
 959
 960                 dma_pointer =
 961                         (u64)pci_map_page(fifo->pdev, frag->page,
 962                                 frag->page_offset, frag->size,
 963                                 PCI_DMA_TODEVICE);
 964
 965                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 966                         goto _exit0;
 967                 vxge_debug_tx(VXGE_TRACE,
 968                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 969                                 dev->name, __func__, __LINE__, i,
 970                                 (unsigned long long)dma_pointer);
 971
 972                 txdl_priv->dma_buffers[j] = dma_pointer;
 973                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 974                                         frag->size);
 975                 frag += 1;
 976         }
 977
 978         offload_type = vxge_offload_type(skb);
 979
 980         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 981
 982                 int mss = vxge_tcp_mss(skb);
 983                 if (mss) {
 984                         vxge_debug_tx(VXGE_TRACE,
 985                                 "%s: %s:%d mss = %d",
 986                                 dev->name, __func__, __LINE__, mss);
 987                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 988                 } else {
 989                         vxge_assert(skb->len <=
 990                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 991                         vxge_assert(0);
 992                         goto _exit1;
 993                 }
 994         }
 995
 996         if (skb->ip_summed == CHECKSUM_PARTIAL)
 997                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 998                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 999                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
1000                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
1001
1002         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
1003 #ifdef NETIF_F_LLTX
1004         dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
1005 #endif
1006         spin_unlock_irqrestore(&fifo->tx_lock, flags);
1007
1008         VXGE_COMPLETE_VPATH_TX(fifo);
1009         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
1010                 dev->name, __func__, __LINE__);
1011         return NETDEV_TX_OK;
1012
1013 _exit0:
1014         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
1015
1016 _exit1:
1017         j = 0;
1018         frag = &skb_shinfo(skb)->frags[0];
1019
1020         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
1021                         skb_headlen(skb), PCI_DMA_TODEVICE);
1022
1023         for (; j < i; j++) {
1024                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
1025                         frag->size, PCI_DMA_TODEVICE);
1026                 frag += 1;
1027         }
1028
1029         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
1030 _exit2:
1031         dev_kfree_skb(skb);
1032         spin_unlock_irqrestore(&fifo->tx_lock, flags);
1033         VXGE_COMPLETE_VPATH_TX(fifo);
1034
1035         return NETDEV_TX_OK;
1036 }
1037
1038 /*
1039  * vxge_rx_term
1040  *
1041  * Function will be called by hw function to abort all outstanding receive
1042  * descriptors.
1043  */
1044 static void
1045 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1046 {
1047         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1048         struct vxge_rx_priv *rx_priv =
1049                 vxge_hw_ring_rxd_private_get(dtrh);
1050
1051         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1052                         ring->ndev->name, __func__, __LINE__);
1053         if (state != VXGE_HW_RXD_STATE_POSTED)
1054                 return;
1055
1056         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1057                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1058
1059         dev_kfree_skb(rx_priv->skb);
1060         rx_priv->skb_data = NULL;
1061
1062         vxge_debug_entryexit(VXGE_TRACE,
1063                 "%s: %s:%d  Exiting...",
1064                 ring->ndev->name, __func__, __LINE__);
1065 }
1066
1067 /*
1068  * vxge_tx_term
1069  *
1070  * Function will be called to abort all outstanding tx descriptors
1071  */
1072 static void
1073 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1074 {
1075         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1076         skb_frag_t *frag;
1077         int i = 0, j, frg_cnt;
1078         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1079         struct sk_buff *skb = txd_priv->skb;
1080
1081         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1082
1083         if (state != VXGE_HW_TXDL_STATE_POSTED)
1084                 return;
1085
1086         /* check skb validity */
1087         vxge_assert(skb);
1088         frg_cnt = skb_shinfo(skb)->nr_frags;
1089         frag = &skb_shinfo(skb)->frags[0];
1090
1091         /*  for unfragmented skb */
1092         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1093                 skb_headlen(skb), PCI_DMA_TODEVICE);
1094
1095         for (j = 0; j < frg_cnt; j++) {
1096                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1097                                frag->size, PCI_DMA_TODEVICE);
1098                 frag += 1;
1099         }
1100
1101         dev_kfree_skb(skb);
1102
1103         vxge_debug_entryexit(VXGE_TRACE,
1104                 "%s:%d  Exiting...", __func__, __LINE__);
1105 }
1106
1107 /**
1108  * vxge_set_multicast
1109  * @dev: pointer to the device structure
1110  *
1111  * Entry point for multicast address enable/disable
1112  * This function is a driver entry point which gets called by the kernel
1113  * whenever multicast addresses must be enabled/disabled. This also gets
1114  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1115  * determine, if multicast address must be enabled or if promiscuous mode
1116  * is to be disabled etc.
1117  */
1118 static void vxge_set_multicast(struct net_device *dev)
1119 {
1120         struct dev_mc_list *mclist;
1121         struct vxgedev *vdev;
1122         int i, mcast_cnt = 0;
1123         struct __vxge_hw_device  *hldev;
1124         enum vxge_hw_status status = VXGE_HW_OK;
1125         struct macInfo mac_info;
1126         int vpath_idx = 0;
1127         struct vxge_mac_addrs *mac_entry;
1128         struct list_head *list_head;
1129         struct list_head *entry, *next;
1130         u8 *mac_address = NULL;
1131
1132         vxge_debug_entryexit(VXGE_TRACE,
1133                 "%s:%d", __func__, __LINE__);
1134
1135         vdev = (struct vxgedev *)netdev_priv(dev);
1136         hldev = (struct __vxge_hw_device  *)vdev->devh;
1137
1138         if (unlikely(!is_vxge_card_up(vdev)))
1139                 return;
1140
1141         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1142                 for (i = 0; i < vdev->no_of_vpath; i++) {
1143                         vxge_assert(vdev->vpaths[i].is_open);
1144                         status = vxge_hw_vpath_mcast_enable(
1145                                                 vdev->vpaths[i].handle);
1146                         vdev->all_multi_flg = 1;
1147                 }
1148         } else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1149                 for (i = 0; i < vdev->no_of_vpath; i++) {
1150                         vxge_assert(vdev->vpaths[i].is_open);
1151                         status = vxge_hw_vpath_mcast_disable(
1152                                                 vdev->vpaths[i].handle);
1153                         vdev->all_multi_flg = 1;
1154                 }
1155         }
1156
1157         if (status != VXGE_HW_OK)
1158                 vxge_debug_init(VXGE_ERR,
1159                         "failed to %s multicast, status %d",
1160                         dev->flags & IFF_ALLMULTI ?
1161                         "enable" : "disable", status);
1162
1163         if (!vdev->config.addr_learn_en) {
1164                 if (dev->flags & IFF_PROMISC) {
1165                         for (i = 0; i < vdev->no_of_vpath; i++) {
1166                                 vxge_assert(vdev->vpaths[i].is_open);
1167                                 status = vxge_hw_vpath_promisc_enable(
1168                                                 vdev->vpaths[i].handle);
1169                         }
1170                 } else {
1171                         for (i = 0; i < vdev->no_of_vpath; i++) {
1172                                 vxge_assert(vdev->vpaths[i].is_open);
1173                                 status = vxge_hw_vpath_promisc_disable(
1174                                                 vdev->vpaths[i].handle);
1175                         }
1176                 }
1177         }
1178
1179         memset(&mac_info, 0, sizeof(struct macInfo));
1180         /* Update individual M_CAST address list */
1181         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1182
1183                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1184                 list_head = &vdev->vpaths[0].mac_addr_list;
1185                 if ((netdev_mc_count(dev) +
1186                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1187                                 vdev->vpaths[0].max_mac_addr_cnt)
1188                         goto _set_all_mcast;
1189
1190                 /* Delete previous MC's */
1191                 for (i = 0; i < mcast_cnt; i++) {
1192                         if (!list_empty(list_head))
1193                                 mac_entry = (struct vxge_mac_addrs *)
1194                                         list_first_entry(list_head,
1195                                                 struct vxge_mac_addrs,
1196                                                 item);
1197
1198                         list_for_each_safe(entry, next, list_head) {
1199
1200                                 mac_entry = (struct vxge_mac_addrs *) entry;
1201                                 /* Copy the mac address to delete */
1202                                 mac_address = (u8 *)&mac_entry->macaddr;
1203                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1204
1205                                 /* Is this a multicast address */
1206                                 if (0x01 & mac_info.macaddr[0]) {
1207                                         for (vpath_idx = 0; vpath_idx <
1208                                                 vdev->no_of_vpath;
1209                                                 vpath_idx++) {
1210                                                 mac_info.vpath_no = vpath_idx;
1211                                                 status = vxge_del_mac_addr(
1212                                                                 vdev,
1213                                                                 &mac_info);
1214                                         }
1215                                 }
1216                         }
1217                 }
1218
1219                 /* Add new ones */
1220                 netdev_for_each_mc_addr(mclist, dev) {
1221                         memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
1222                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1223                                         vpath_idx++) {
1224                                 mac_info.vpath_no = vpath_idx;
1225                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1226                                 status = vxge_add_mac_addr(vdev, &mac_info);
1227                                 if (status != VXGE_HW_OK) {
1228                                         vxge_debug_init(VXGE_ERR,
1229                                                 "%s:%d Setting individual"
1230                                                 "multicast address failed",
1231                                                 __func__, __LINE__);
1232                                         goto _set_all_mcast;
1233                                 }
1234                         }
1235                 }
1236
1237                 return;
1238 _set_all_mcast:
1239                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1240                 /* Delete previous MC's */
1241                 for (i = 0; i < mcast_cnt; i++) {
1242
1243                         list_for_each_safe(entry, next, list_head) {
1244
1245                                 mac_entry = (struct vxge_mac_addrs *) entry;
1246                                 /* Copy the mac address to delete */
1247                                 mac_address = (u8 *)&mac_entry->macaddr;
1248                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1249
1250                                 /* Is this a multicast address */
1251                                 if (0x01 & mac_info.macaddr[0])
1252                                         break;
1253                         }
1254
1255                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1256                                         vpath_idx++) {
1257                                 mac_info.vpath_no = vpath_idx;
1258                                 status = vxge_del_mac_addr(vdev, &mac_info);
1259                         }
1260                 }
1261
1262                 /* Enable all multicast */
1263                 for (i = 0; i < vdev->no_of_vpath; i++) {
1264                         vxge_assert(vdev->vpaths[i].is_open);
1265                         status = vxge_hw_vpath_mcast_enable(
1266                                                 vdev->vpaths[i].handle);
1267                         if (status != VXGE_HW_OK) {
1268                                 vxge_debug_init(VXGE_ERR,
1269                                         "%s:%d Enabling all multicasts failed",
1270                                          __func__, __LINE__);
1271                         }
1272                         vdev->all_multi_flg = 1;
1273                 }
1274                 dev->flags |= IFF_ALLMULTI;
1275         }
1276
1277         vxge_debug_entryexit(VXGE_TRACE,
1278                 "%s:%d  Exiting...", __func__, __LINE__);
1279 }
1280
1281 /**
1282  * vxge_set_mac_addr
1283  * @dev: pointer to the device structure
1284  *
1285  * Update entry "0" (default MAC addr)
1286  */
1287 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1288 {
1289         struct sockaddr *addr = p;
1290         struct vxgedev *vdev;
1291         struct __vxge_hw_device  *hldev;
1292         enum vxge_hw_status status = VXGE_HW_OK;
1293         struct macInfo mac_info_new, mac_info_old;
1294         int vpath_idx = 0;
1295
1296         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1297
1298         vdev = (struct vxgedev *)netdev_priv(dev);
1299         hldev = vdev->devh;
1300
1301         if (!is_valid_ether_addr(addr->sa_data))
1302                 return -EINVAL;
1303
1304         memset(&mac_info_new, 0, sizeof(struct macInfo));
1305         memset(&mac_info_old, 0, sizeof(struct macInfo));
1306
1307         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1308                 __func__, __LINE__);
1309
1310         /* Get the old address */
1311         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1312
1313         /* Copy the new address */
1314         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1315
1316         /* First delete the old mac address from all the vpaths
1317         as we can't specify the index while adding new mac address */
1318         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1319                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1320                 if (!vpath->is_open) {
1321                         /* This can happen when this interface is added/removed
1322                         to the bonding interface. Delete this station address
1323                         from the linked list */
1324                         vxge_mac_list_del(vpath, &mac_info_old);
1325
1326                         /* Add this new address to the linked list
1327                         for later restoring */
1328                         vxge_mac_list_add(vpath, &mac_info_new);
1329
1330                         continue;
1331                 }
1332                 /* Delete the station address */
1333                 mac_info_old.vpath_no = vpath_idx;
1334                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1335         }
1336
1337         if (unlikely(!is_vxge_card_up(vdev))) {
1338                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1339                 return VXGE_HW_OK;
1340         }
1341
1342         /* Set this mac address to all the vpaths */
1343         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1344                 mac_info_new.vpath_no = vpath_idx;
1345                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1346                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1347                 if (status != VXGE_HW_OK)
1348                         return -EINVAL;
1349         }
1350
1351         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1352
1353         return status;
1354 }
1355
1356 /*
1357  * vxge_vpath_intr_enable
1358  * @vdev: pointer to vdev
1359  * @vp_id: vpath for which to enable the interrupts
1360  *
1361  * Enables the interrupts for the vpath
1362 */
1363 void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1364 {
1365         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1366         int msix_id, alarm_msix_id;
1367         int tim_msix_id[4] = {[0 ...3] = 0};
1368
1369         vxge_hw_vpath_intr_enable(vpath->handle);
1370
1371         if (vdev->config.intr_type == INTA)
1372                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1373         else {
1374                 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1375                 alarm_msix_id =
1376                         VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1377
1378                 tim_msix_id[0] = msix_id;
1379                 tim_msix_id[1] = msix_id + 1;
1380                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1381                         alarm_msix_id);
1382
1383                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1384                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1385
1386                 /* enable the alarm vector */
1387                 vxge_hw_vpath_msix_unmask(vpath->handle, alarm_msix_id);
1388         }
1389 }
1390
1391 /*
1392  * vxge_vpath_intr_disable
1393  * @vdev: pointer to vdev
1394  * @vp_id: vpath for which to disable the interrupts
1395  *
1396  * Disables the interrupts for the vpath
1397 */
1398 void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1399 {
1400         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1401         int msix_id;
1402
1403         vxge_hw_vpath_intr_disable(vpath->handle);
1404
1405         if (vdev->config.intr_type == INTA)
1406                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1407         else {
1408                 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1409                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1410                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1411
1412                 /* disable the alarm vector */
1413                 msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1414                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1415         }
1416 }
1417
1418 /*
1419  * vxge_reset_vpath
1420  * @vdev: pointer to vdev
1421  * @vp_id: vpath to reset
1422  *
1423  * Resets the vpath
1424 */
1425 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1426 {
1427         enum vxge_hw_status status = VXGE_HW_OK;
1428         int ret = 0;
1429
1430         /* check if device is down already */
1431         if (unlikely(!is_vxge_card_up(vdev)))
1432                 return 0;
1433
1434         /* is device reset already scheduled */
1435         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1436                 return 0;
1437
1438         if (vdev->vpaths[vp_id].handle) {
1439                 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1440                                 == VXGE_HW_OK) {
1441                         if (is_vxge_card_up(vdev) &&
1442                                 vxge_hw_vpath_recover_from_reset(
1443                                         vdev->vpaths[vp_id].handle)
1444                                         != VXGE_HW_OK) {
1445                                 vxge_debug_init(VXGE_ERR,
1446                                         "vxge_hw_vpath_recover_from_reset"
1447                                         "failed for vpath:%d", vp_id);
1448                                 return status;
1449                         }
1450                 } else {
1451                         vxge_debug_init(VXGE_ERR,
1452                                 "vxge_hw_vpath_reset failed for"
1453                                 "vpath:%d", vp_id);
1454                                 return status;
1455                 }
1456         } else
1457                 return VXGE_HW_FAIL;
1458
1459         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1460         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1461
1462         /* Enable all broadcast */
1463         vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1464
1465         /* Enable the interrupts */
1466         vxge_vpath_intr_enable(vdev, vp_id);
1467
1468         smp_wmb();
1469
1470         /* Enable the flow of traffic through the vpath */
1471         vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1472
1473         smp_wmb();
1474         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1475         vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1476
1477         /* Vpath reset done */
1478         clear_bit(vp_id, &vdev->vp_reset);
1479
1480         /* Start the vpath queue */
1481         vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1482
1483         return ret;
1484 }
1485
1486 static int do_vxge_reset(struct vxgedev *vdev, int event)
1487 {
1488         enum vxge_hw_status status;
1489         int ret = 0, vp_id, i;
1490
1491         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1492
1493         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1494                 /* check if device is down already */
1495                 if (unlikely(!is_vxge_card_up(vdev)))
1496                         return 0;
1497
1498                 /* is reset already scheduled */
1499                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1500                         return 0;
1501         }
1502
1503         if (event == VXGE_LL_FULL_RESET) {
1504                 /* wait for all the vpath reset to complete */
1505                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1506                         while (test_bit(vp_id, &vdev->vp_reset))
1507                                 msleep(50);
1508                 }
1509
1510                 /* if execution mode is set to debug, don't reset the adapter */
1511                 if (unlikely(vdev->exec_mode)) {
1512                         vxge_debug_init(VXGE_ERR,
1513                                 "%s: execution mode is debug, returning..",
1514                                 vdev->ndev->name);
1515                 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1516                 vxge_stop_all_tx_queue(vdev);
1517                 return 0;
1518                 }
1519         }
1520
1521         if (event == VXGE_LL_FULL_RESET) {
1522                 vxge_hw_device_intr_disable(vdev->devh);
1523
1524                 switch (vdev->cric_err_event) {
1525                 case VXGE_HW_EVENT_UNKNOWN:
1526                         vxge_stop_all_tx_queue(vdev);
1527                         vxge_debug_init(VXGE_ERR,
1528                                 "fatal: %s: Disabling device due to"
1529                                 "unknown error",
1530                                 vdev->ndev->name);
1531                         ret = -EPERM;
1532                         goto out;
1533                 case VXGE_HW_EVENT_RESET_START:
1534                         break;
1535                 case VXGE_HW_EVENT_RESET_COMPLETE:
1536                 case VXGE_HW_EVENT_LINK_DOWN:
1537                 case VXGE_HW_EVENT_LINK_UP:
1538                 case VXGE_HW_EVENT_ALARM_CLEARED:
1539                 case VXGE_HW_EVENT_ECCERR:
1540                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1541                         ret = -EPERM;
1542                         goto out;
1543                 case VXGE_HW_EVENT_FIFO_ERR:
1544                 case VXGE_HW_EVENT_VPATH_ERR:
1545                         break;
1546                 case VXGE_HW_EVENT_CRITICAL_ERR:
1547                         vxge_stop_all_tx_queue(vdev);
1548                         vxge_debug_init(VXGE_ERR,
1549                                 "fatal: %s: Disabling device due to"
1550                                 "serious error",
1551                                 vdev->ndev->name);
1552                         /* SOP or device reset required */
1553                         /* This event is not currently used */
1554                         ret = -EPERM;
1555                         goto out;
1556                 case VXGE_HW_EVENT_SERR:
1557                         vxge_stop_all_tx_queue(vdev);
1558                         vxge_debug_init(VXGE_ERR,
1559                                 "fatal: %s: Disabling device due to"
1560                                 "serious error",
1561                                 vdev->ndev->name);
1562                         ret = -EPERM;
1563                         goto out;
1564                 case VXGE_HW_EVENT_SRPCIM_SERR:
1565                 case VXGE_HW_EVENT_MRPCIM_SERR:
1566                         ret = -EPERM;
1567                         goto out;
1568                 case VXGE_HW_EVENT_SLOT_FREEZE:
1569                         vxge_stop_all_tx_queue(vdev);
1570                         vxge_debug_init(VXGE_ERR,
1571                                 "fatal: %s: Disabling device due to"
1572                                 "slot freeze",
1573                                 vdev->ndev->name);
1574                         ret = -EPERM;
1575                         goto out;
1576                 default:
1577                         break;
1578
1579                 }
1580         }
1581
1582         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1583                 vxge_stop_all_tx_queue(vdev);
1584
1585         if (event == VXGE_LL_FULL_RESET) {
1586                 status = vxge_reset_all_vpaths(vdev);
1587                 if (status != VXGE_HW_OK) {
1588                         vxge_debug_init(VXGE_ERR,
1589                                 "fatal: %s: can not reset vpaths",
1590                                 vdev->ndev->name);
1591                         ret = -EPERM;
1592                         goto out;
1593                 }
1594         }
1595
1596         if (event == VXGE_LL_COMPL_RESET) {
1597                 for (i = 0; i < vdev->no_of_vpath; i++)
1598                         if (vdev->vpaths[i].handle) {
1599                                 if (vxge_hw_vpath_recover_from_reset(
1600                                         vdev->vpaths[i].handle)
1601                                                 != VXGE_HW_OK) {
1602                                         vxge_debug_init(VXGE_ERR,
1603                                                 "vxge_hw_vpath_recover_"
1604                                                 "from_reset failed for vpath: "
1605                                                 "%d", i);
1606                                         ret = -EPERM;
1607                                         goto out;
1608                                 }
1609                                 } else {
1610                                         vxge_debug_init(VXGE_ERR,
1611                                         "vxge_hw_vpath_reset failed for "
1612                                                 "vpath:%d", i);
1613                                         ret = -EPERM;
1614                                         goto out;
1615                                 }
1616         }
1617
1618         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1619                 /* Reprogram the DA table with populated mac addresses */
1620                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1621                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1622                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1623                 }
1624
1625                 /* enable vpath interrupts */
1626                 for (i = 0; i < vdev->no_of_vpath; i++)
1627                         vxge_vpath_intr_enable(vdev, i);
1628
1629                 vxge_hw_device_intr_enable(vdev->devh);
1630
1631                 smp_wmb();
1632
1633                 /* Indicate card up */
1634                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1635
1636                 /* Get the traffic to flow through the vpaths */
1637                 for (i = 0; i < vdev->no_of_vpath; i++) {
1638                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1639                         smp_wmb();
1640                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1641                 }
1642
1643                 vxge_wake_all_tx_queue(vdev);
1644         }
1645
1646 out:
1647         vxge_debug_entryexit(VXGE_TRACE,
1648                 "%s:%d  Exiting...", __func__, __LINE__);
1649
1650         /* Indicate reset done */
1651         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1652                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1653         return ret;
1654 }
1655
1656 /*
1657  * vxge_reset
1658  * @vdev: pointer to ll device
1659  *
1660  * driver may reset the chip on events of serr, eccerr, etc
1661  */
1662 int vxge_reset(struct vxgedev *vdev)
1663 {
1664         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1665         return 0;
1666 }
1667
1668 /**
1669  * vxge_poll - Receive handler when Receive Polling is used.
1670  * @dev: pointer to the device structure.
1671  * @budget: Number of packets budgeted to be processed in this iteration.
1672  *
1673  * This function comes into picture only if Receive side is being handled
1674  * through polling (called NAPI in linux). It mostly does what the normal
1675  * Rx interrupt handler does in terms of descriptor and packet processing
1676  * but not in an interrupt context. Also it will process a specified number
1677  * of packets at most in one iteration. This value is passed down by the
1678  * kernel as the function argument 'budget'.
1679  */
1680 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1681 {
1682         struct vxge_ring *ring =
1683                 container_of(napi, struct vxge_ring, napi);
1684         int budget_org = budget;
1685         ring->budget = budget;
1686
1687         vxge_hw_vpath_poll_rx(ring->handle);
1688
1689         if (ring->pkts_processed < budget_org) {
1690                 napi_complete(napi);
1691                 /* Re enable the Rx interrupts for the vpath */
1692                 vxge_hw_channel_msix_unmask(
1693                                 (struct __vxge_hw_channel *)ring->handle,
1694                                 ring->rx_vector_no);
1695         }
1696
1697         return ring->pkts_processed;
1698 }
1699
1700 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1701 {
1702         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1703         int pkts_processed = 0;
1704         int i;
1705         int budget_org = budget;
1706         struct vxge_ring *ring;
1707
1708         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1709                 pci_get_drvdata(vdev->pdev);
1710
1711         for (i = 0; i < vdev->no_of_vpath; i++) {
1712                 ring = &vdev->vpaths[i].ring;
1713                 ring->budget = budget;
1714                 vxge_hw_vpath_poll_rx(ring->handle);
1715                 pkts_processed += ring->pkts_processed;
1716                 budget -= ring->pkts_processed;
1717                 if (budget <= 0)
1718                         break;
1719         }
1720
1721         VXGE_COMPLETE_ALL_TX(vdev);
1722
1723         if (pkts_processed < budget_org) {
1724                 napi_complete(napi);
1725                 /* Re enable the Rx interrupts for the ring */
1726                 vxge_hw_device_unmask_all(hldev);
1727                 vxge_hw_device_flush_io(hldev);
1728         }
1729
1730         return pkts_processed;
1731 }
1732
1733 #ifdef CONFIG_NET_POLL_CONTROLLER
1734 /**
1735  * vxge_netpoll - netpoll event handler entry point
1736  * @dev : pointer to the device structure.
1737  * Description:
1738  *      This function will be called by upper layer to check for events on the
1739  * interface in situations where interrupts are disabled. It is used for
1740  * specific in-kernel networking tasks, such as remote consoles and kernel
1741  * debugging over the network (example netdump in RedHat).
1742  */
1743 static void vxge_netpoll(struct net_device *dev)
1744 {
1745         struct __vxge_hw_device  *hldev;
1746         struct vxgedev *vdev;
1747
1748         vdev = (struct vxgedev *)netdev_priv(dev);
1749         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1750
1751         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1752
1753         if (pci_channel_offline(vdev->pdev))
1754                 return;
1755
1756         disable_irq(dev->irq);
1757         vxge_hw_device_clear_tx_rx(hldev);
1758
1759         vxge_hw_device_clear_tx_rx(hldev);
1760         VXGE_COMPLETE_ALL_RX(vdev);
1761         VXGE_COMPLETE_ALL_TX(vdev);
1762
1763         enable_irq(dev->irq);
1764
1765         vxge_debug_entryexit(VXGE_TRACE,
1766                 "%s:%d  Exiting...", __func__, __LINE__);
1767         return;
1768 }
1769 #endif
1770
1771 /* RTH configuration */
1772 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1773 {
1774         enum vxge_hw_status status = VXGE_HW_OK;
1775         struct vxge_hw_rth_hash_types hash_types;
1776         u8 itable[256] = {0}; /* indirection table */
1777         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1778         int index;
1779
1780         /*
1781          * Filling
1782          *      - itable with bucket numbers
1783          *      - mtable with bucket-to-vpath mapping
1784          */
1785         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1786                 itable[index] = index;
1787                 mtable[index] = index % vdev->no_of_vpath;
1788         }
1789
1790         /* Fill RTH hash types */
1791         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1792         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1793         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1794         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1795         hash_types.hash_type_tcpipv6ex_en =
1796                                         vdev->config.rth_hash_type_tcpipv6ex;
1797         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1798
1799         /* set indirection table, bucket-to-vpath mapping */
1800         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1801                                                 vdev->no_of_vpath,
1802                                                 mtable, itable,
1803                                                 vdev->config.rth_bkt_sz);
1804         if (status != VXGE_HW_OK) {
1805                 vxge_debug_init(VXGE_ERR,
1806                         "RTH indirection table configuration failed "
1807                         "for vpath:%d", vdev->vpaths[0].device_id);
1808                 return status;
1809         }
1810
1811         /*
1812         * Because the itable_set() method uses the active_table field
1813         * for the target virtual path the RTH config should be updated
1814         * for all VPATHs. The h/w only uses the lowest numbered VPATH
1815         * when steering frames.
1816         */
1817          for (index = 0; index < vdev->no_of_vpath; index++) {
1818                 status = vxge_hw_vpath_rts_rth_set(
1819                                 vdev->vpaths[index].handle,
1820                                 vdev->config.rth_algorithm,
1821                                 &hash_types,
1822                                 vdev->config.rth_bkt_sz);
1823
1824                  if (status != VXGE_HW_OK) {
1825                         vxge_debug_init(VXGE_ERR,
1826                                 "RTH configuration failed for vpath:%d",
1827                                 vdev->vpaths[index].device_id);
1828                         return status;
1829                  }
1830          }
1831
1832         return status;
1833 }
1834
1835 int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1836 {
1837         struct vxge_mac_addrs *new_mac_entry;
1838         u8 *mac_address = NULL;
1839
1840         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1841                 return TRUE;
1842
1843         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1844         if (!new_mac_entry) {
1845                 vxge_debug_mem(VXGE_ERR,
1846                         "%s: memory allocation failed",
1847                         VXGE_DRIVER_NAME);
1848                 return FALSE;
1849         }
1850
1851         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1852
1853         /* Copy the new mac address to the list */
1854         mac_address = (u8 *)&new_mac_entry->macaddr;
1855         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1856
1857         new_mac_entry->state = mac->state;
1858         vpath->mac_addr_cnt++;
1859
1860         /* Is this a multicast address */
1861         if (0x01 & mac->macaddr[0])
1862                 vpath->mcast_addr_cnt++;
1863
1864         return TRUE;
1865 }
1866
1867 /* Add a mac address to DA table */
1868 enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1869 {
1870         enum vxge_hw_status status = VXGE_HW_OK;
1871         struct vxge_vpath *vpath;
1872         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1873
1874         if (0x01 & mac->macaddr[0]) /* multicast address */
1875                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1876         else
1877                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1878
1879         vpath = &vdev->vpaths[mac->vpath_no];
1880         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1881                                                 mac->macmask, duplicate_mode);
1882         if (status != VXGE_HW_OK) {
1883                 vxge_debug_init(VXGE_ERR,
1884                         "DA config add entry failed for vpath:%d",
1885                         vpath->device_id);
1886         } else
1887                 if (FALSE == vxge_mac_list_add(vpath, mac))
1888                         status = -EPERM;
1889
1890         return status;
1891 }
1892
1893 int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1894 {
1895         struct list_head *entry, *next;
1896         u64 del_mac = 0;
1897         u8 *mac_address = (u8 *) (&del_mac);
1898
1899         /* Copy the mac address to delete from the list */
1900         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1901
1902         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1903                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1904                         list_del(entry);
1905                         kfree((struct vxge_mac_addrs *)entry);
1906                         vpath->mac_addr_cnt--;
1907
1908                         /* Is this a multicast address */
1909                         if (0x01 & mac->macaddr[0])
1910                                 vpath->mcast_addr_cnt--;
1911                         return TRUE;
1912                 }
1913         }
1914
1915         return FALSE;
1916 }
1917 /* delete a mac address from DA table */
1918 enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1919 {
1920         enum vxge_hw_status status = VXGE_HW_OK;
1921         struct vxge_vpath *vpath;
1922
1923         vpath = &vdev->vpaths[mac->vpath_no];
1924         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1925                                                 mac->macmask);
1926         if (status != VXGE_HW_OK) {
1927                 vxge_debug_init(VXGE_ERR,
1928                         "DA config delete entry failed for vpath:%d",
1929                         vpath->device_id);
1930         } else
1931                 vxge_mac_list_del(vpath, mac);
1932         return status;
1933 }
1934
1935 /* list all mac addresses from DA table */
1936 enum vxge_hw_status
1937 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1938                                         struct macInfo *mac)
1939 {
1940         enum vxge_hw_status status = VXGE_HW_OK;
1941         unsigned char macmask[ETH_ALEN];
1942         unsigned char macaddr[ETH_ALEN];
1943
1944         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1945                                 macaddr, macmask);
1946         if (status != VXGE_HW_OK) {
1947                 vxge_debug_init(VXGE_ERR,
1948                         "DA config list entry failed for vpath:%d",
1949                         vpath->device_id);
1950                 return status;
1951         }
1952
1953         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1954
1955                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1956                                 macaddr, macmask);
1957                 if (status != VXGE_HW_OK)
1958                         break;
1959         }
1960
1961         return status;
1962 }
1963
1964 /* Store all vlan ids from the list to the vid table */
1965 enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1966 {
1967         enum vxge_hw_status status = VXGE_HW_OK;
1968         struct vxgedev *vdev = vpath->vdev;
1969         u16 vid;
1970
1971         if (vdev->vlgrp && vpath->is_open) {
1972
1973                 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1974                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1975                                 continue;
1976                         /* Add these vlan to the vid table */
1977                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1978                 }
1979         }
1980
1981         return status;
1982 }
1983
1984 /* Store all mac addresses from the list to the DA table */
1985 enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1986 {
1987         enum vxge_hw_status status = VXGE_HW_OK;
1988         struct macInfo mac_info;
1989         u8 *mac_address = NULL;
1990         struct list_head *entry, *next;
1991
1992         memset(&mac_info, 0, sizeof(struct macInfo));
1993
1994         if (vpath->is_open) {
1995
1996                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1997                         mac_address =
1998                                 (u8 *)&
1999                                 ((struct vxge_mac_addrs *)entry)->macaddr;
2000                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
2001                         ((struct vxge_mac_addrs *)entry)->state =
2002                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
2003                         /* does this mac address already exist in da table? */
2004                         status = vxge_search_mac_addr_in_da_table(vpath,
2005                                 &mac_info);
2006                         if (status != VXGE_HW_OK) {
2007                                 /* Add this mac address to the DA table */
2008                                 status = vxge_hw_vpath_mac_addr_add(
2009                                         vpath->handle, mac_info.macaddr,
2010                                         mac_info.macmask,
2011                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
2012                                 if (status != VXGE_HW_OK) {
2013                                         vxge_debug_init(VXGE_ERR,
2014                                             "DA add entry failed for vpath:%d",
2015                                             vpath->device_id);
2016                                         ((struct vxge_mac_addrs *)entry)->state
2017                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
2018                                 }
2019                         }
2020                 }
2021         }
2022
2023         return status;
2024 }
2025
2026 /* reset vpaths */
2027 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
2028 {
2029         int i;
2030         enum vxge_hw_status status = VXGE_HW_OK;
2031
2032         for (i = 0; i < vdev->no_of_vpath; i++)
2033                 if (vdev->vpaths[i].handle) {
2034                         if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
2035                                         == VXGE_HW_OK) {
2036                                 if (is_vxge_card_up(vdev) &&
2037                                         vxge_hw_vpath_recover_from_reset(
2038                                                 vdev->vpaths[i].handle)
2039                                                 != VXGE_HW_OK) {
2040                                         vxge_debug_init(VXGE_ERR,
2041                                                 "vxge_hw_vpath_recover_"
2042                                                 "from_reset failed for vpath: "
2043                                                 "%d", i);
2044                                         return status;
2045                                 }
2046                         } else {
2047                                 vxge_debug_init(VXGE_ERR,
2048                                         "vxge_hw_vpath_reset failed for "
2049                                         "vpath:%d", i);
2050                                         return status;
2051                         }
2052                 }
2053         return status;
2054 }
2055
2056 /* close vpaths */
2057 void vxge_close_vpaths(struct vxgedev *vdev, int index)
2058 {
2059         int i;
2060         for (i = index; i < vdev->no_of_vpath; i++) {
2061                 if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
2062                         vxge_hw_vpath_close(vdev->vpaths[i].handle);
2063                         vdev->stats.vpaths_open--;
2064                 }
2065                 vdev->vpaths[i].is_open = 0;
2066                 vdev->vpaths[i].handle  = NULL;
2067         }
2068 }
2069
2070 /* open vpaths */
2071 int vxge_open_vpaths(struct vxgedev *vdev)
2072 {
2073         enum vxge_hw_status status;
2074         int i;
2075         u32 vp_id = 0;
2076         struct vxge_hw_vpath_attr attr;
2077
2078         for (i = 0; i < vdev->no_of_vpath; i++) {
2079                 vxge_assert(vdev->vpaths[i].is_configured);
2080                 attr.vp_id = vdev->vpaths[i].device_id;
2081                 attr.fifo_attr.callback = vxge_xmit_compl;
2082                 attr.fifo_attr.txdl_term = vxge_tx_term;
2083                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2084                 attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
2085
2086                 attr.ring_attr.callback = vxge_rx_1b_compl;
2087                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2088                 attr.ring_attr.rxd_term = vxge_rx_term;
2089                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2090                 attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
2091
2092                 vdev->vpaths[i].ring.ndev = vdev->ndev;
2093                 vdev->vpaths[i].ring.pdev = vdev->pdev;
2094                 status = vxge_hw_vpath_open(vdev->devh, &attr,
2095                                 &(vdev->vpaths[i].handle));
2096                 if (status == VXGE_HW_OK) {
2097                         vdev->vpaths[i].fifo.handle =
2098                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2099                         vdev->vpaths[i].ring.handle =
2100                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2101                         vdev->vpaths[i].fifo.tx_steering_type =
2102                                 vdev->config.tx_steering_type;
2103                         vdev->vpaths[i].fifo.ndev = vdev->ndev;
2104                         vdev->vpaths[i].fifo.pdev = vdev->pdev;
2105                         vdev->vpaths[i].fifo.indicate_max_pkts =
2106                                 vdev->config.fifo_indicate_max_pkts;
2107                         vdev->vpaths[i].ring.rx_vector_no = 0;
2108                         vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
2109                         vdev->vpaths[i].is_open = 1;
2110                         vdev->vp_handles[i] = vdev->vpaths[i].handle;
2111                         vdev->vpaths[i].ring.gro_enable =
2112                                                 vdev->config.gro_enable;
2113                         vdev->vpaths[i].ring.vlan_tag_strip =
2114                                                 vdev->vlan_tag_strip;
2115                         vdev->stats.vpaths_open++;
2116                 } else {
2117                         vdev->stats.vpath_open_fail++;
2118                         vxge_debug_init(VXGE_ERR,
2119                                 "%s: vpath: %d failed to open "
2120                                 "with status: %d",
2121                             vdev->ndev->name, vdev->vpaths[i].device_id,
2122                                 status);
2123                         vxge_close_vpaths(vdev, 0);
2124                         return -EPERM;
2125                 }
2126
2127                 vp_id =
2128                   ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
2129                   vpath->vp_id;
2130                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2131         }
2132         return VXGE_HW_OK;
2133 }
2134
2135 /*
2136  *  vxge_isr_napi
2137  *  @irq: the irq of the device.
2138  *  @dev_id: a void pointer to the hldev structure of the Titan device
2139  *  @ptregs: pointer to the registers pushed on the stack.
2140  *
2141  *  This function is the ISR handler of the device when napi is enabled. It
2142  *  identifies the reason for the interrupt and calls the relevant service
2143  *  routines.
2144  */
2145 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2146 {
2147         struct net_device *dev;
2148         struct __vxge_hw_device *hldev;
2149         u64 reason;
2150         enum vxge_hw_status status;
2151         struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2152
2153         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2154
2155         dev = vdev->ndev;
2156         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2157
2158         if (pci_channel_offline(vdev->pdev))
2159                 return IRQ_NONE;
2160
2161         if (unlikely(!is_vxge_card_up(vdev)))
2162                 return IRQ_NONE;
2163
2164         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2165                         &reason);
2166         if (status == VXGE_HW_OK) {
2167                 vxge_hw_device_mask_all(hldev);
2168
2169                 if (reason &
2170                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2171                         vdev->vpaths_deployed >>
2172                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2173
2174                         vxge_hw_device_clear_tx_rx(hldev);
2175                         napi_schedule(&vdev->napi);
2176                         vxge_debug_intr(VXGE_TRACE,
2177                                 "%s:%d  Exiting...", __func__, __LINE__);
2178                         return IRQ_HANDLED;
2179                 } else
2180                         vxge_hw_device_unmask_all(hldev);
2181         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2182                 (status == VXGE_HW_ERR_CRITICAL) ||
2183                 (status == VXGE_HW_ERR_FIFO))) {
2184                 vxge_hw_device_mask_all(hldev);
2185                 vxge_hw_device_flush_io(hldev);
2186                 return IRQ_HANDLED;
2187         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2188                 return IRQ_HANDLED;
2189
2190         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2191         return IRQ_NONE;
2192 }
2193
2194 #ifdef CONFIG_PCI_MSI
2195
2196 static irqreturn_t
2197 vxge_tx_msix_handle(int irq, void *dev_id)
2198 {
2199         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2200
2201         VXGE_COMPLETE_VPATH_TX(fifo);
2202
2203         return IRQ_HANDLED;
2204 }
2205
2206 static irqreturn_t
2207 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2208 {
2209         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2210
2211         /* MSIX_IDX for Rx is 1 */
2212         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2213                                         ring->rx_vector_no);
2214
2215         napi_schedule(&ring->napi);
2216         return IRQ_HANDLED;
2217 }
2218
2219 static irqreturn_t
2220 vxge_alarm_msix_handle(int irq, void *dev_id)
2221 {
2222         int i;
2223         enum vxge_hw_status status;
2224         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2225         struct vxgedev *vdev = vpath->vdev;
2226         int alarm_msix_id =
2227                 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2228
2229         for (i = 0; i < vdev->no_of_vpath; i++) {
2230                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
2231                         alarm_msix_id);
2232
2233                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2234                         vdev->exec_mode);
2235                 if (status == VXGE_HW_OK) {
2236
2237                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2238                                 alarm_msix_id);
2239                         continue;
2240                 }
2241                 vxge_debug_intr(VXGE_ERR,
2242                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2243                         VXGE_DRIVER_NAME, status);
2244         }
2245         return IRQ_HANDLED;
2246 }
2247
2248 static int vxge_alloc_msix(struct vxgedev *vdev)
2249 {
2250         int j, i, ret = 0;
2251         int intr_cnt = 0;
2252         int alarm_msix_id = 0, msix_intr_vect = 0;
2253         vdev->intr_cnt = 0;
2254
2255         /* Tx/Rx MSIX Vectors count */
2256         vdev->intr_cnt = vdev->no_of_vpath * 2;
2257
2258         /* Alarm MSIX Vectors count */
2259         vdev->intr_cnt++;
2260
2261         intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2262         vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
2263                                                 GFP_KERNEL);
2264         if (!vdev->entries) {
2265                 vxge_debug_init(VXGE_ERR,
2266                         "%s: memory allocation failed",
2267                         VXGE_DRIVER_NAME);
2268                 return  -ENOMEM;
2269         }
2270
2271         vdev->vxge_entries = kzalloc(intr_cnt * sizeof(struct vxge_msix_entry),
2272                                                         GFP_KERNEL);
2273         if (!vdev->vxge_entries) {
2274                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2275                         VXGE_DRIVER_NAME);
2276                 kfree(vdev->entries);
2277                 return -ENOMEM;
2278         }
2279
2280         /* Last vector in the list is used for alarm */
2281         alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2282         for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {
2283
2284                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2285
2286                 /* Initialize the fifo vector */
2287                 vdev->entries[j].entry = msix_intr_vect;
2288                 vdev->vxge_entries[j].entry = msix_intr_vect;
2289                 vdev->vxge_entries[j].in_use = 0;
2290                 j++;
2291
2292                 /* Initialize the ring vector */
2293                 vdev->entries[j].entry = msix_intr_vect + 1;
2294                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2295                 vdev->vxge_entries[j].in_use = 0;
2296                 j++;
2297         }
2298
2299         /* Initialize the alarm vector */
2300         vdev->entries[j].entry = alarm_msix_id;
2301         vdev->vxge_entries[j].entry = alarm_msix_id;
2302         vdev->vxge_entries[j].in_use = 0;
2303
2304         ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2305         /* if driver request exceeeds available irq's, request with a small
2306          * number.
2307         */
2308         if (ret > 0) {
2309                 vxge_debug_init(VXGE_ERR,
2310                         "%s: MSI-X enable failed for %d vectors, available: %d",
2311                         VXGE_DRIVER_NAME, intr_cnt, ret);
2312                 vdev->max_vpath_supported = vdev->no_of_vpath;
2313                 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2314
2315                 /* Reset the alarm vector setting */
2316                 vdev->entries[j].entry = 0;
2317                 vdev->vxge_entries[j].entry = 0;
2318
2319                 /* Initialize the alarm vector with new setting */
2320                 vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
2321                 vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
2322                 vdev->vxge_entries[intr_cnt - 1].in_use = 0;
2323
2324                 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2325                 if (!ret)
2326                         vxge_debug_init(VXGE_ERR,
2327                                 "%s: MSI-X enabled for %d vectors",
2328                                 VXGE_DRIVER_NAME, intr_cnt);
2329         }
2330
2331         if (ret) {
2332                 vxge_debug_init(VXGE_ERR,
2333                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2334                         VXGE_DRIVER_NAME, intr_cnt, ret);
2335                 kfree(vdev->entries);
2336                 kfree(vdev->vxge_entries);
2337                 vdev->entries = NULL;
2338                 vdev->vxge_entries = NULL;
2339                 return -ENODEV;
2340         }
2341         return 0;
2342 }
2343
2344 static int vxge_enable_msix(struct vxgedev *vdev)
2345 {
2346
2347         int i, ret = 0;
2348         enum vxge_hw_status status;
2349         /* 0 - Tx, 1 - Rx  */
2350         int tim_msix_id[4];
2351         int alarm_msix_id = 0, msix_intr_vect = 0;
2352         vdev->intr_cnt = 0;
2353
2354         /* allocate msix vectors */
2355         ret = vxge_alloc_msix(vdev);
2356         if (!ret) {
2357                 /* Last vector in the list is used for alarm */
2358                 alarm_msix_id =
2359                         VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2360                 for (i = 0; i < vdev->no_of_vpath; i++) {
2361
2362                         /* If fifo or ring are not enabled
2363                            the MSIX vector for that should be set to 0
2364                            Hence initializeing this array to all 0s.
2365                         */
2366                         memset(tim_msix_id, 0, sizeof(tim_msix_id));
2367                         msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2368                         tim_msix_id[0] = msix_intr_vect;
2369
2370                         tim_msix_id[1] = msix_intr_vect + 1;
2371                         vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];
2372
2373                         status = vxge_hw_vpath_msix_set(
2374                                                 vdev->vpaths[i].handle,
2375                                                 tim_msix_id, alarm_msix_id);
2376                         if (status != VXGE_HW_OK) {
2377                                 vxge_debug_init(VXGE_ERR,
2378                                         "vxge_hw_vpath_msix_set "
2379                                         "failed with status : %x", status);
2380                                 kfree(vdev->entries);
2381                                 kfree(vdev->vxge_entries);
2382                                 pci_disable_msix(vdev->pdev);
2383                                 return -ENODEV;
2384                         }
2385                 }
2386         }
2387
2388         return ret;
2389 }
2390
2391 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2392 {
2393         int intr_cnt;
2394
2395         for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
2396                 intr_cnt++) {
2397                 if (vdev->vxge_entries[intr_cnt].in_use) {
2398                         synchronize_irq(vdev->entries[intr_cnt].vector);
2399                         free_irq(vdev->entries[intr_cnt].vector,
2400                                 vdev->vxge_entries[intr_cnt].arg);
2401                         vdev->vxge_entries[intr_cnt].in_use = 0;
2402                 }
2403         }
2404
2405         kfree(vdev->entries);
2406         kfree(vdev->vxge_entries);
2407         vdev->entries = NULL;
2408         vdev->vxge_entries = NULL;
2409
2410         if (vdev->config.intr_type == MSI_X)
2411                 pci_disable_msix(vdev->pdev);
2412 }
2413 #endif
2414
2415 static void vxge_rem_isr(struct vxgedev *vdev)
2416 {
2417         struct __vxge_hw_device  *hldev;
2418         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2419
2420 #ifdef CONFIG_PCI_MSI
2421         if (vdev->config.intr_type == MSI_X) {
2422                 vxge_rem_msix_isr(vdev);
2423         } else
2424 #endif
2425         if (vdev->config.intr_type == INTA) {
2426                         synchronize_irq(vdev->pdev->irq);
2427                         free_irq(vdev->pdev->irq, vdev);
2428         }
2429 }
2430
2431 static int vxge_add_isr(struct vxgedev *vdev)
2432 {
2433         int ret = 0;
2434 #ifdef CONFIG_PCI_MSI
2435         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2436         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2437
2438         if (vdev->config.intr_type == MSI_X)
2439                 ret = vxge_enable_msix(vdev);
2440
2441         if (ret) {
2442                 vxge_debug_init(VXGE_ERR,
2443                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2444                 vxge_debug_init(VXGE_ERR,
2445                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2446                 vdev->config.intr_type = INTA;
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                                 vdev->config.intr_type = INTA;
2495                                 vxge_debug_init(VXGE_ERR,
2496                                         "%s: Defaulting to INTA"
2497                                         , vdev->ndev->name);
2498                                         goto INTA_MODE;
2499                         }
2500
2501                         if (irq_req) {
2502                                 /* We requested for this msix interrupt */
2503                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2504                                 vxge_hw_vpath_msix_unmask(
2505                                         vdev->vpaths[vp_idx].handle,
2506                                         intr_idx);
2507                                 intr_cnt++;
2508                         }
2509
2510                         /* Point to next vpath handler */
2511                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2512                             (vp_idx < (vdev->no_of_vpath - 1)))
2513                                 vp_idx++;
2514                 }
2515
2516                 intr_cnt = vdev->max_vpath_supported * 2;
2517                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2518                         "%s:vxge Alarm fn: %d MSI-X: %d",
2519                         vdev->ndev->name, pci_fun,
2520                         vdev->entries[intr_cnt].entry);
2521                 /* For Alarm interrupts */
2522                 ret = request_irq(vdev->entries[intr_cnt].vector,
2523                                         vxge_alarm_msix_handle, 0,
2524                                         vdev->desc[intr_cnt],
2525                                         &vdev->vpaths[vp_idx]);
2526                 if (ret) {
2527                         vxge_debug_init(VXGE_ERR,
2528                                 "%s: MSIX - %d Registration failed",
2529                                 vdev->ndev->name, intr_cnt);
2530                         vxge_rem_msix_isr(vdev);
2531                         vdev->config.intr_type = INTA;
2532                         vxge_debug_init(VXGE_ERR,
2533                                 "%s: Defaulting to INTA",
2534                                 vdev->ndev->name);
2535                                 goto INTA_MODE;
2536                 }
2537
2538                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2539                                         intr_idx - 2);
2540                 vdev->vxge_entries[intr_cnt].in_use = 1;
2541                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[vp_idx];
2542         }
2543 INTA_MODE:
2544 #endif
2545         snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);
2546
2547         if (vdev->config.intr_type == INTA) {
2548                 vxge_hw_device_set_intr_type(vdev->devh,
2549                         VXGE_HW_INTR_MODE_IRQLINE);
2550                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2551                         vdev->vpaths[0].device_id);
2552                 ret = request_irq((int) vdev->pdev->irq,
2553                         vxge_isr_napi,
2554                         IRQF_SHARED, vdev->desc[0], vdev);
2555                 if (ret) {
2556                         vxge_debug_init(VXGE_ERR,
2557                                 "%s %s-%d: ISR registration failed",
2558                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2559                         return -ENODEV;
2560                 }
2561                 vxge_debug_init(VXGE_TRACE,
2562                         "new %s-%d line allocated",
2563                         "IRQ", vdev->pdev->irq);
2564         }
2565
2566         return VXGE_HW_OK;
2567 }
2568
2569 static void vxge_poll_vp_reset(unsigned long data)
2570 {
2571         struct vxgedev *vdev = (struct vxgedev *)data;
2572         int i, j = 0;
2573
2574         for (i = 0; i < vdev->no_of_vpath; i++) {
2575                 if (test_bit(i, &vdev->vp_reset)) {
2576                         vxge_reset_vpath(vdev, i);
2577                         j++;
2578                 }
2579         }
2580         if (j && (vdev->config.intr_type != MSI_X)) {
2581                 vxge_hw_device_unmask_all(vdev->devh);
2582                 vxge_hw_device_flush_io(vdev->devh);
2583         }
2584
2585         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2586 }
2587
2588 static void vxge_poll_vp_lockup(unsigned long data)
2589 {
2590         struct vxgedev *vdev = (struct vxgedev *)data;
2591         int i;
2592         struct vxge_ring *ring;
2593         enum vxge_hw_status status = VXGE_HW_OK;
2594
2595         for (i = 0; i < vdev->no_of_vpath; i++) {
2596                 ring = &vdev->vpaths[i].ring;
2597                 /* Did this vpath received any packets */
2598                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2599                         status = vxge_hw_vpath_check_leak(ring->handle);
2600
2601                         /* Did it received any packets last time */
2602                         if ((VXGE_HW_FAIL == status) &&
2603                                 (VXGE_HW_FAIL == ring->last_status)) {
2604
2605                                 /* schedule vpath reset */
2606                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2607
2608                                         /* disable interrupts for this vpath */
2609                                         vxge_vpath_intr_disable(vdev, i);
2610
2611                                         /* stop the queue for this vpath */
2612                                         vxge_stop_tx_queue(&vdev->vpaths[i].
2613                                                                 fifo);
2614                                         continue;
2615                                 }
2616                         }
2617                 }
2618                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2619                 ring->last_status = status;
2620         }
2621
2622         /* Check every 1 milli second */
2623         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2624 }
2625
2626 /**
2627  * vxge_open
2628  * @dev: pointer to the device structure.
2629  *
2630  * This function is the open entry point of the driver. It mainly calls a
2631  * function to allocate Rx buffers and inserts them into the buffer
2632  * descriptors and then enables the Rx part of the NIC.
2633  * Return value: '0' on success and an appropriate (-)ve integer as
2634  * defined in errno.h file on failure.
2635  */
2636 int
2637 vxge_open(struct net_device *dev)
2638 {
2639         enum vxge_hw_status status;
2640         struct vxgedev *vdev;
2641         struct __vxge_hw_device *hldev;
2642         int ret = 0;
2643         int i;
2644         u64 val64, function_mode;
2645         vxge_debug_entryexit(VXGE_TRACE,
2646                 "%s: %s:%d", dev->name, __func__, __LINE__);
2647
2648         vdev = (struct vxgedev *)netdev_priv(dev);
2649         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2650         function_mode = vdev->config.device_hw_info.function_mode;
2651
2652         /* make sure you have link off by default every time Nic is
2653          * initialized */
2654         netif_carrier_off(dev);
2655
2656         /* Open VPATHs */
2657         status = vxge_open_vpaths(vdev);
2658         if (status != VXGE_HW_OK) {
2659                 vxge_debug_init(VXGE_ERR,
2660                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2661                 ret = -EPERM;
2662                 goto out0;
2663         }
2664
2665         vdev->mtu = dev->mtu;
2666
2667         status = vxge_add_isr(vdev);
2668         if (status != VXGE_HW_OK) {
2669                 vxge_debug_init(VXGE_ERR,
2670                         "%s: fatal: ISR add failed", dev->name);
2671                 ret = -EPERM;
2672                 goto out1;
2673         }
2674
2675
2676         if (vdev->config.intr_type != MSI_X) {
2677                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2678                         vdev->config.napi_weight);
2679                 napi_enable(&vdev->napi);
2680                 for (i = 0; i < vdev->no_of_vpath; i++)
2681                         vdev->vpaths[i].ring.napi_p = &vdev->napi;
2682         } else {
2683                 for (i = 0; i < vdev->no_of_vpath; i++) {
2684                         netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2685                             vxge_poll_msix, vdev->config.napi_weight);
2686                         napi_enable(&vdev->vpaths[i].ring.napi);
2687                         vdev->vpaths[i].ring.napi_p =
2688                                 &vdev->vpaths[i].ring.napi;
2689                 }
2690         }
2691
2692         /* configure RTH */
2693         if (vdev->config.rth_steering) {
2694                 status = vxge_rth_configure(vdev);
2695                 if (status != VXGE_HW_OK) {
2696                         vxge_debug_init(VXGE_ERR,
2697                                 "%s: fatal: RTH configuration failed",
2698                                 dev->name);
2699                         ret = -EPERM;
2700                         goto out2;
2701                 }
2702         }
2703
2704         for (i = 0; i < vdev->no_of_vpath; i++) {
2705                 /* set initial mtu before enabling the device */
2706                 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2707                                                 vdev->mtu);
2708                 if (status != VXGE_HW_OK) {
2709                         vxge_debug_init(VXGE_ERR,
2710                                 "%s: fatal: can not set new MTU", dev->name);
2711                         ret = -EPERM;
2712                         goto out2;
2713                 }
2714         }
2715
2716         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2717         vxge_debug_init(vdev->level_trace,
2718                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2719         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2720
2721         /* Reprogram the DA table with populated mac addresses */
2722         for (i = 0; i < vdev->no_of_vpath; i++) {
2723                 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2724                 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2725         }
2726
2727         /* Enable vpath to sniff all unicast/multicast traffic that not
2728          * addressed to them. We allow promiscous mode for PF only
2729          */
2730
2731         val64 = 0;
2732         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2733                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2734
2735         vxge_hw_mgmt_reg_write(vdev->devh,
2736                 vxge_hw_mgmt_reg_type_mrpcim,
2737                 0,
2738                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2739                         rxmac_authorize_all_addr),
2740                 val64);
2741
2742         vxge_hw_mgmt_reg_write(vdev->devh,
2743                 vxge_hw_mgmt_reg_type_mrpcim,
2744                 0,
2745                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2746                         rxmac_authorize_all_vid),
2747                 val64);
2748
2749         vxge_set_multicast(dev);
2750
2751         /* Enabling Bcast and mcast for all vpath */
2752         for (i = 0; i < vdev->no_of_vpath; i++) {
2753                 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2754                 if (status != VXGE_HW_OK)
2755                         vxge_debug_init(VXGE_ERR,
2756                                 "%s : Can not enable bcast for vpath "
2757                                 "id %d", dev->name, i);
2758                 if (vdev->config.addr_learn_en) {
2759                         status =
2760                             vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2761                         if (status != VXGE_HW_OK)
2762                                 vxge_debug_init(VXGE_ERR,
2763                                         "%s : Can not enable mcast for vpath "
2764                                         "id %d", dev->name, i);
2765                 }
2766         }
2767
2768         vxge_hw_device_setpause_data(vdev->devh, 0,
2769                 vdev->config.tx_pause_enable,
2770                 vdev->config.rx_pause_enable);
2771
2772         if (vdev->vp_reset_timer.function == NULL)
2773                 vxge_os_timer(vdev->vp_reset_timer,
2774                         vxge_poll_vp_reset, vdev, (HZ/2));
2775
2776         if (vdev->vp_lockup_timer.function == NULL)
2777                 vxge_os_timer(vdev->vp_lockup_timer,
2778                         vxge_poll_vp_lockup, vdev, (HZ/2));
2779
2780         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2781
2782         smp_wmb();
2783
2784         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2785                 netif_carrier_on(vdev->ndev);
2786                 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2787                 vdev->stats.link_up++;
2788         }
2789
2790         vxge_hw_device_intr_enable(vdev->devh);
2791
2792         smp_wmb();
2793
2794         for (i = 0; i < vdev->no_of_vpath; i++) {
2795                 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2796                 smp_wmb();
2797                 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2798         }
2799
2800         vxge_start_all_tx_queue(vdev);
2801         goto out0;
2802
2803 out2:
2804         vxge_rem_isr(vdev);
2805
2806         /* Disable napi */
2807         if (vdev->config.intr_type != MSI_X)
2808                 napi_disable(&vdev->napi);
2809         else {
2810                 for (i = 0; i < vdev->no_of_vpath; i++)
2811                         napi_disable(&vdev->vpaths[i].ring.napi);
2812         }
2813
2814 out1:
2815         vxge_close_vpaths(vdev, 0);
2816 out0:
2817         vxge_debug_entryexit(VXGE_TRACE,
2818                                 "%s: %s:%d  Exiting...",
2819                                 dev->name, __func__, __LINE__);
2820         return ret;
2821 }
2822
2823 /* Loop throught the mac address list and delete all the entries */
2824 void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2825 {
2826
2827         struct list_head *entry, *next;
2828         if (list_empty(&vpath->mac_addr_list))
2829                 return;
2830
2831         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2832                 list_del(entry);
2833                 kfree((struct vxge_mac_addrs *)entry);
2834         }
2835 }
2836
2837 static void vxge_napi_del_all(struct vxgedev *vdev)
2838 {
2839         int i;
2840         if (vdev->config.intr_type != MSI_X)
2841                 netif_napi_del(&vdev->napi);
2842         else {
2843                 for (i = 0; i < vdev->no_of_vpath; i++)
2844                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2845         }
2846         return;
2847 }
2848
2849 int do_vxge_close(struct net_device *dev, int do_io)
2850 {
2851         enum vxge_hw_status status;
2852         struct vxgedev *vdev;
2853         struct __vxge_hw_device *hldev;
2854         int i;
2855         u64 val64, vpath_vector;
2856         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2857                 dev->name, __func__, __LINE__);
2858
2859         vdev = (struct vxgedev *)netdev_priv(dev);
2860         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2861
2862         if (unlikely(!is_vxge_card_up(vdev)))
2863                 return 0;
2864
2865         /* If vxge_handle_crit_err task is executing,
2866          * wait till it completes. */
2867         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2868                 msleep(50);
2869
2870         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2871         if (do_io) {
2872                 /* Put the vpath back in normal mode */
2873                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2874                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2875                                 vxge_hw_mgmt_reg_type_mrpcim,
2876                                 0,
2877                                 (ulong)offsetof(
2878                                         struct vxge_hw_mrpcim_reg,
2879                                         rts_mgr_cbasin_cfg),
2880                                 &val64);
2881
2882                 if (status == VXGE_HW_OK) {
2883                         val64 &= ~vpath_vector;
2884                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2885                                         vxge_hw_mgmt_reg_type_mrpcim,
2886                                         0,
2887                                         (ulong)offsetof(
2888                                                 struct vxge_hw_mrpcim_reg,
2889                                                 rts_mgr_cbasin_cfg),
2890                                         val64);
2891                 }
2892
2893                 /* Remove the function 0 from promiscous mode */
2894                 vxge_hw_mgmt_reg_write(vdev->devh,
2895                         vxge_hw_mgmt_reg_type_mrpcim,
2896                         0,
2897                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2898                                 rxmac_authorize_all_addr),
2899                         0);
2900
2901                 vxge_hw_mgmt_reg_write(vdev->devh,
2902                         vxge_hw_mgmt_reg_type_mrpcim,
2903                         0,
2904                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2905                                 rxmac_authorize_all_vid),
2906                         0);
2907
2908                 smp_wmb();
2909         }
2910         del_timer_sync(&vdev->vp_lockup_timer);
2911
2912         del_timer_sync(&vdev->vp_reset_timer);
2913
2914         /* Disable napi */
2915         if (vdev->config.intr_type != MSI_X)
2916                 napi_disable(&vdev->napi);
2917         else {
2918                 for (i = 0; i < vdev->no_of_vpath; i++)
2919                         napi_disable(&vdev->vpaths[i].ring.napi);
2920         }
2921
2922         netif_carrier_off(vdev->ndev);
2923         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2924         vxge_stop_all_tx_queue(vdev);
2925
2926         /* Note that at this point xmit() is stopped by upper layer */
2927         if (do_io)
2928                 vxge_hw_device_intr_disable(vdev->devh);
2929
2930         mdelay(1000);
2931
2932         vxge_rem_isr(vdev);
2933
2934         vxge_napi_del_all(vdev);
2935
2936         if (do_io)
2937                 vxge_reset_all_vpaths(vdev);
2938
2939         vxge_close_vpaths(vdev, 0);
2940
2941         vxge_debug_entryexit(VXGE_TRACE,
2942                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2943
2944         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2945
2946         return 0;
2947 }
2948
2949 /**
2950  * vxge_close
2951  * @dev: device pointer.
2952  *
2953  * This is the stop entry point of the driver. It needs to undo exactly
2954  * whatever was done by the open entry point, thus it's usually referred to
2955  * as the close function.Among other things this function mainly stops the
2956  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2957  * Return value: '0' on success and an appropriate (-)ve integer as
2958  * defined in errno.h file on failure.
2959  */
2960 int
2961 vxge_close(struct net_device *dev)
2962 {
2963         do_vxge_close(dev, 1);
2964         return 0;
2965 }
2966
2967 /**
2968  * vxge_change_mtu
2969  * @dev: net device pointer.
2970  * @new_mtu :the new MTU size for the device.
2971  *
2972  * A driver entry point to change MTU size for the device. Before changing
2973  * the MTU the device must be stopped.
2974  */
2975 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2976 {
2977         struct vxgedev *vdev = netdev_priv(dev);
2978
2979         vxge_debug_entryexit(vdev->level_trace,
2980                 "%s:%d", __func__, __LINE__);
2981         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2982                 vxge_debug_init(vdev->level_err,
2983                         "%s: mtu size is invalid", dev->name);
2984                 return -EPERM;
2985         }
2986
2987         /* check if device is down already */
2988         if (unlikely(!is_vxge_card_up(vdev))) {
2989                 /* just store new value, will use later on open() */
2990                 dev->mtu = new_mtu;
2991                 vxge_debug_init(vdev->level_err,
2992                         "%s", "device is down on MTU change");
2993                 return 0;
2994         }
2995
2996         vxge_debug_init(vdev->level_trace,
2997                 "trying to apply new MTU %d", new_mtu);
2998
2999         if (vxge_close(dev))
3000                 return -EIO;
3001
3002         dev->mtu = new_mtu;
3003         vdev->mtu = new_mtu;
3004
3005         if (vxge_open(dev))
3006                 return -EIO;
3007
3008         vxge_debug_init(vdev->level_trace,
3009                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3010
3011         vxge_debug_entryexit(vdev->level_trace,
3012                 "%s:%d  Exiting...", __func__, __LINE__);
3013
3014         return 0;
3015 }
3016
3017 /**
3018  * vxge_get_stats
3019  * @dev: pointer to the device structure
3020  *
3021  * Updates the device statistics structure. This function updates the device
3022  * statistics structure in the net_device structure and returns a pointer
3023  * to the same.
3024  */
3025 static struct net_device_stats *
3026 vxge_get_stats(struct net_device *dev)
3027 {
3028         struct vxgedev *vdev;
3029         struct net_device_stats *net_stats;
3030         int k;
3031
3032         vdev = netdev_priv(dev);
3033
3034         net_stats = &vdev->stats.net_stats;
3035
3036         memset(net_stats, 0, sizeof(struct net_device_stats));
3037
3038         for (k = 0; k < vdev->no_of_vpath; k++) {
3039                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3040                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3041                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3042                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3043                 net_stats->rx_dropped +=
3044                         vdev->vpaths[k].ring.stats.rx_dropped;
3045
3046                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3047                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3048                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3049         }
3050
3051         return net_stats;
3052 }
3053
3054 /**
3055  * vxge_ioctl
3056  * @dev: Device pointer.
3057  * @ifr: An IOCTL specific structure, that can contain a pointer to
3058  *       a proprietary structure used to pass information to the driver.
3059  * @cmd: This is used to distinguish between the different commands that
3060  *       can be passed to the IOCTL functions.
3061  *
3062  * Entry point for the Ioctl.
3063  */
3064 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3065 {
3066         return -EOPNOTSUPP;
3067 }
3068
3069 /**
3070  * vxge_tx_watchdog
3071  * @dev: pointer to net device structure
3072  *
3073  * Watchdog for transmit side.
3074  * This function is triggered if the Tx Queue is stopped
3075  * for a pre-defined amount of time when the Interface is still up.
3076  */
3077 static void
3078 vxge_tx_watchdog(struct net_device *dev)
3079 {
3080         struct vxgedev *vdev;
3081
3082         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3083
3084         vdev = (struct vxgedev *)netdev_priv(dev);
3085
3086         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3087
3088         vxge_reset(vdev);
3089         vxge_debug_entryexit(VXGE_TRACE,
3090                 "%s:%d  Exiting...", __func__, __LINE__);
3091 }
3092
3093 /**
3094  * vxge_vlan_rx_register
3095  * @dev: net device pointer.
3096  * @grp: vlan group
3097  *
3098  * Vlan group registration
3099  */
3100 static void
3101 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3102 {
3103         struct vxgedev *vdev;
3104         struct vxge_vpath *vpath;
3105         int vp;
3106         u64 vid;
3107         enum vxge_hw_status status;
3108         int i;
3109
3110         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3111
3112         vdev = (struct vxgedev *)netdev_priv(dev);
3113
3114         vpath = &vdev->vpaths[0];
3115         if ((NULL == grp) && (vpath->is_open)) {
3116                 /* Get the first vlan */
3117                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3118
3119                 while (status == VXGE_HW_OK) {
3120
3121                         /* Delete this vlan from the vid table */
3122                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3123                                 vpath = &vdev->vpaths[vp];
3124                                 if (!vpath->is_open)
3125                                         continue;
3126
3127                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3128                         }
3129
3130                         /* Get the next vlan to be deleted */
3131                         vpath = &vdev->vpaths[0];
3132                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3133                 }
3134         }
3135
3136         vdev->vlgrp = grp;
3137
3138         for (i = 0; i < vdev->no_of_vpath; i++) {
3139                 if (vdev->vpaths[i].is_configured)
3140                         vdev->vpaths[i].ring.vlgrp = grp;
3141         }
3142
3143         vxge_debug_entryexit(VXGE_TRACE,
3144                 "%s:%d  Exiting...", __func__, __LINE__);
3145 }
3146
3147 /**
3148  * vxge_vlan_rx_add_vid
3149  * @dev: net device pointer.
3150  * @vid: vid
3151  *
3152  * Add the vlan id to the devices vlan id table
3153  */
3154 static void
3155 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3156 {
3157         struct vxgedev *vdev;
3158         struct vxge_vpath *vpath;
3159         int vp_id;
3160
3161         vdev = (struct vxgedev *)netdev_priv(dev);
3162
3163         /* Add these vlan to the vid table */
3164         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3165                 vpath = &vdev->vpaths[vp_id];
3166                 if (!vpath->is_open)
3167                         continue;
3168                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3169         }
3170 }
3171
3172 /**
3173  * vxge_vlan_rx_add_vid
3174  * @dev: net device pointer.
3175  * @vid: vid
3176  *
3177  * Remove the vlan id from the device's vlan id table
3178  */
3179 static void
3180 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3181 {
3182         struct vxgedev *vdev;
3183         struct vxge_vpath *vpath;
3184         int vp_id;
3185
3186         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3187
3188         vdev = (struct vxgedev *)netdev_priv(dev);
3189
3190         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3191
3192         /* Delete this vlan from 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_delete(vpath->handle, vid);
3198         }
3199         vxge_debug_entryexit(VXGE_TRACE,
3200                 "%s:%d  Exiting...", __func__, __LINE__);
3201 }
3202
3203 static const struct net_device_ops vxge_netdev_ops = {
3204         .ndo_open               = vxge_open,
3205         .ndo_stop               = vxge_close,
3206         .ndo_get_stats          = vxge_get_stats,
3207         .ndo_start_xmit         = vxge_xmit,
3208         .ndo_validate_addr      = eth_validate_addr,
3209         .ndo_set_multicast_list = vxge_set_multicast,
3210
3211         .ndo_do_ioctl           = vxge_ioctl,
3212
3213         .ndo_set_mac_address    = vxge_set_mac_addr,
3214         .ndo_change_mtu         = vxge_change_mtu,
3215         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3216         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3217         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3218
3219         .ndo_tx_timeout         = vxge_tx_watchdog,
3220 #ifdef CONFIG_NET_POLL_CONTROLLER
3221         .ndo_poll_controller    = vxge_netpoll,
3222 #endif
3223 };
3224
3225 int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3226                                    struct vxge_config *config,
3227                                    int high_dma, int no_of_vpath,
3228                                    struct vxgedev **vdev_out)
3229 {
3230         struct net_device *ndev;
3231         enum vxge_hw_status status = VXGE_HW_OK;
3232         struct vxgedev *vdev;
3233         int i, ret = 0, no_of_queue = 1;
3234         u64 stat;
3235
3236         *vdev_out = NULL;
3237         if (config->tx_steering_type == TX_MULTIQ_STEERING)
3238                 no_of_queue = no_of_vpath;
3239
3240         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3241                         no_of_queue);
3242         if (ndev == NULL) {
3243                 vxge_debug_init(
3244                         vxge_hw_device_trace_level_get(hldev),
3245                 "%s : device allocation failed", __func__);
3246                 ret = -ENODEV;
3247                 goto _out0;
3248         }
3249
3250         vxge_debug_entryexit(
3251                 vxge_hw_device_trace_level_get(hldev),
3252                 "%s: %s:%d  Entering...",
3253                 ndev->name, __func__, __LINE__);
3254
3255         vdev = netdev_priv(ndev);
3256         memset(vdev, 0, sizeof(struct vxgedev));
3257
3258         vdev->ndev = ndev;
3259         vdev->devh = hldev;
3260         vdev->pdev = hldev->pdev;
3261         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3262         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3263
3264         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3265
3266         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3267                                 NETIF_F_HW_VLAN_FILTER;
3268         /*  Driver entry points */
3269         ndev->irq = vdev->pdev->irq;
3270         ndev->base_addr = (unsigned long) hldev->bar0;
3271
3272         ndev->netdev_ops = &vxge_netdev_ops;
3273
3274         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3275
3276         initialize_ethtool_ops(ndev);
3277
3278         /* Allocate memory for vpath */
3279         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3280                                 no_of_vpath, GFP_KERNEL);
3281         if (!vdev->vpaths) {
3282                 vxge_debug_init(VXGE_ERR,
3283                         "%s: vpath memory allocation failed",
3284                         vdev->ndev->name);
3285                 ret = -ENODEV;
3286                 goto _out1;
3287         }
3288
3289         ndev->features |= NETIF_F_SG;
3290
3291         ndev->features |= NETIF_F_HW_CSUM;
3292         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3293                 "%s : checksuming enabled", __func__);
3294
3295         if (high_dma) {
3296                 ndev->features |= NETIF_F_HIGHDMA;
3297                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3298                         "%s : using High DMA", __func__);
3299         }
3300
3301         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3302
3303         if (vdev->config.gro_enable)
3304                 ndev->features |= NETIF_F_GRO;
3305
3306         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3307                 ndev->real_num_tx_queues = no_of_vpath;
3308
3309 #ifdef NETIF_F_LLTX
3310         ndev->features |= NETIF_F_LLTX;
3311 #endif
3312
3313         for (i = 0; i < no_of_vpath; i++)
3314                 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3315
3316         if (register_netdev(ndev)) {
3317                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3318                         "%s: %s : device registration failed!",
3319                         ndev->name, __func__);
3320                 ret = -ENODEV;
3321                 goto _out2;
3322         }
3323
3324         /*  Set the factory defined MAC address initially */
3325         ndev->addr_len = ETH_ALEN;
3326
3327         /* Make Link state as off at this point, when the Link change
3328          * interrupt comes the state will be automatically changed to
3329          * the right state.
3330          */
3331         netif_carrier_off(ndev);
3332
3333         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3334                 "%s: Ethernet device registered",
3335                 ndev->name);
3336
3337         *vdev_out = vdev;
3338
3339         /* Resetting the Device stats */
3340         status = vxge_hw_mrpcim_stats_access(
3341                                 hldev,
3342                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3343                                 0,
3344                                 0,
3345                                 &stat);
3346
3347         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3348                 vxge_debug_init(
3349                         vxge_hw_device_trace_level_get(hldev),
3350                         "%s: device stats clear returns"
3351                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3352
3353         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3354                 "%s: %s:%d  Exiting...",
3355                 ndev->name, __func__, __LINE__);
3356
3357         return ret;
3358 _out2:
3359         kfree(vdev->vpaths);
3360 _out1:
3361         free_netdev(ndev);
3362 _out0:
3363         return ret;
3364 }
3365
3366 /*
3367  * vxge_device_unregister
3368  *
3369  * This function will unregister and free network device
3370  */
3371 void
3372 vxge_device_unregister(struct __vxge_hw_device *hldev)
3373 {
3374         struct vxgedev *vdev;
3375         struct net_device *dev;
3376         char buf[IFNAMSIZ];
3377 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3378         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3379         u32 level_trace;
3380 #endif
3381
3382         dev = hldev->ndev;
3383         vdev = netdev_priv(dev);
3384 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3385         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3386         level_trace = vdev->level_trace;
3387 #endif
3388         vxge_debug_entryexit(level_trace,
3389                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3390
3391         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3392
3393         /* in 2.6 will call stop() if device is up */
3394         unregister_netdev(dev);
3395
3396         flush_scheduled_work();
3397
3398         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3399         vxge_debug_entryexit(level_trace,
3400                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3401 }
3402
3403 /*
3404  * vxge_callback_crit_err
3405  *
3406  * This function is called by the alarm handler in interrupt context.
3407  * Driver must analyze it based on the event type.
3408  */
3409 static void
3410 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3411                         enum vxge_hw_event type, u64 vp_id)
3412 {
3413         struct net_device *dev = hldev->ndev;
3414         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3415         int vpath_idx;
3416
3417         vxge_debug_entryexit(vdev->level_trace,
3418                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3419
3420         /* Note: This event type should be used for device wide
3421          * indications only - Serious errors, Slot freeze and critical errors
3422          */
3423         vdev->cric_err_event = type;
3424
3425         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3426                 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3427                         break;
3428
3429         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3430                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3431                         vxge_debug_init(VXGE_ERR,
3432                                 "%s: Slot is frozen", vdev->ndev->name);
3433                 } else if (type == VXGE_HW_EVENT_SERR) {
3434                         vxge_debug_init(VXGE_ERR,
3435                                 "%s: Encountered Serious Error",
3436                                 vdev->ndev->name);
3437                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3438                         vxge_debug_init(VXGE_ERR,
3439                                 "%s: Encountered Critical Error",
3440                                 vdev->ndev->name);
3441         }
3442
3443         if ((type == VXGE_HW_EVENT_SERR) ||
3444                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3445                 if (unlikely(vdev->exec_mode))
3446                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3447         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3448                 vxge_hw_device_mask_all(hldev);
3449                 if (unlikely(vdev->exec_mode))
3450                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3451         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3452                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3453
3454                 if (unlikely(vdev->exec_mode))
3455                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3456                 else {
3457                         /* check if this vpath is already set for reset */
3458                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3459
3460                                 /* disable interrupts for this vpath */
3461                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3462
3463                                 /* stop the queue for this vpath */
3464                                 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3465                                                         fifo);
3466                         }
3467                 }
3468         }
3469
3470         vxge_debug_entryexit(vdev->level_trace,
3471                 "%s: %s:%d  Exiting...",
3472                 vdev->ndev->name, __func__, __LINE__);
3473 }
3474
3475 static void verify_bandwidth(void)
3476 {
3477         int i, band_width, total = 0, equal_priority = 0;
3478
3479         /* 1. If user enters 0 for some fifo, give equal priority to all */
3480         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3481                 if (bw_percentage[i] == 0) {
3482                         equal_priority = 1;
3483                         break;
3484                 }
3485         }
3486
3487         if (!equal_priority) {
3488                 /* 2. If sum exceeds 100, give equal priority to all */
3489                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3490                         if (bw_percentage[i] == 0xFF)
3491                                 break;
3492
3493                         total += bw_percentage[i];
3494                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3495                                 equal_priority = 1;
3496                                 break;
3497                         }
3498                 }
3499         }
3500
3501         if (!equal_priority) {
3502                 /* Is all the bandwidth consumed? */
3503                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3504                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3505                                 /* Split rest of bw equally among next VPs*/
3506                                 band_width =
3507                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3508                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3509                                 if (band_width < 2) /* min of 2% */
3510                                         equal_priority = 1;
3511                                 else {
3512                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3513                                                 i++)
3514                                                 bw_percentage[i] =
3515                                                         band_width;
3516                                 }
3517                         }
3518                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3519                         equal_priority = 1;
3520         }
3521
3522         if (equal_priority) {
3523                 vxge_debug_init(VXGE_ERR,
3524                         "%s: Assigning equal bandwidth to all the vpaths",
3525                         VXGE_DRIVER_NAME);
3526                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3527                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3528                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3529                         bw_percentage[i] = bw_percentage[0];
3530         }
3531
3532         return;
3533 }
3534
3535 /*
3536  * Vpath configuration
3537  */
3538 static int __devinit vxge_config_vpaths(
3539                         struct vxge_hw_device_config *device_config,
3540                         u64 vpath_mask, struct vxge_config *config_param)
3541 {
3542         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3543         u32 txdl_size, txdl_per_memblock;
3544
3545         temp = driver_config->vpath_per_dev;
3546         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3547                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3548                 /* No more CPU. Return vpath number as zero.*/
3549                 if (driver_config->g_no_cpus == -1)
3550                         return 0;
3551
3552                 if (!driver_config->g_no_cpus)
3553                         driver_config->g_no_cpus = num_online_cpus();
3554
3555                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3556                 if (!driver_config->vpath_per_dev)
3557                         driver_config->vpath_per_dev = 1;
3558
3559                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3560                         if (!vxge_bVALn(vpath_mask, i, 1))
3561                                 continue;
3562                         else
3563                                 default_no_vpath++;
3564                 if (default_no_vpath < driver_config->vpath_per_dev)
3565                         driver_config->vpath_per_dev = default_no_vpath;
3566
3567                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3568                                 (driver_config->vpath_per_dev * 2);
3569                 if (driver_config->g_no_cpus <= 0)
3570                         driver_config->g_no_cpus = -1;
3571         }
3572
3573         if (driver_config->vpath_per_dev == 1) {
3574                 vxge_debug_ll_config(VXGE_TRACE,
3575                         "%s: Disable tx and rx steering, "
3576                         "as single vpath is configured", VXGE_DRIVER_NAME);
3577                 config_param->rth_steering = NO_STEERING;
3578                 config_param->tx_steering_type = NO_STEERING;
3579                 device_config->rth_en = 0;
3580         }
3581
3582         /* configure bandwidth */
3583         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3584                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3585
3586         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3587                 device_config->vp_config[i].vp_id = i;
3588                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3589                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3590                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3591                                 vxge_debug_ll_config(VXGE_TRACE,
3592                                         "%s: vpath: %d is not available",
3593                                         VXGE_DRIVER_NAME, i);
3594                                 continue;
3595                         } else {
3596                                 vxge_debug_ll_config(VXGE_TRACE,
3597                                         "%s: vpath: %d available",
3598                                         VXGE_DRIVER_NAME, i);
3599                                 no_of_vpaths++;
3600                         }
3601                 } else {
3602                         vxge_debug_ll_config(VXGE_TRACE,
3603                                 "%s: vpath: %d is not configured, "
3604                                 "max_config_vpath exceeded",
3605                                 VXGE_DRIVER_NAME, i);
3606                         break;
3607                 }
3608
3609                 /* Configure Tx fifo's */
3610                 device_config->vp_config[i].fifo.enable =
3611                                                 VXGE_HW_FIFO_ENABLE;
3612                 device_config->vp_config[i].fifo.max_frags =
3613                                 MAX_SKB_FRAGS + 1;
3614                 device_config->vp_config[i].fifo.memblock_size =
3615                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3616
3617                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3618                                 sizeof(struct vxge_hw_fifo_txd);
3619                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3620
3621                 device_config->vp_config[i].fifo.fifo_blocks =
3622                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3623
3624                 device_config->vp_config[i].fifo.intr =
3625                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3626
3627                 /* Configure tti properties */
3628                 device_config->vp_config[i].tti.intr_enable =
3629                                         VXGE_HW_TIM_INTR_ENABLE;
3630
3631                 device_config->vp_config[i].tti.btimer_val =
3632                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3633
3634                 device_config->vp_config[i].tti.timer_ac_en =
3635                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3636
3637                 /* For msi-x with napi (each vector
3638                 has a handler of its own) -
3639                 Set CI to OFF for all vpaths */
3640                 device_config->vp_config[i].tti.timer_ci_en =
3641                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3642
3643                 device_config->vp_config[i].tti.timer_ri_en =
3644                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3645
3646                 device_config->vp_config[i].tti.util_sel =
3647                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3648
3649                 device_config->vp_config[i].tti.ltimer_val =
3650                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3651
3652                 device_config->vp_config[i].tti.rtimer_val =
3653                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3654
3655                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3656                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3657                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3658                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3659                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3660                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3661                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3662
3663                 /* Configure Rx rings */
3664                 device_config->vp_config[i].ring.enable  =
3665                                                 VXGE_HW_RING_ENABLE;
3666
3667                 device_config->vp_config[i].ring.ring_blocks  =
3668                                                 VXGE_HW_DEF_RING_BLOCKS;
3669                 device_config->vp_config[i].ring.buffer_mode =
3670                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3671                 device_config->vp_config[i].ring.rxds_limit  =
3672                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3673                 device_config->vp_config[i].ring.scatter_mode =
3674                                         VXGE_HW_RING_SCATTER_MODE_A;
3675
3676                 /* Configure rti properties */
3677                 device_config->vp_config[i].rti.intr_enable =
3678                                         VXGE_HW_TIM_INTR_ENABLE;
3679
3680                 device_config->vp_config[i].rti.btimer_val =
3681                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3682
3683                 device_config->vp_config[i].rti.timer_ac_en =
3684                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3685
3686                 device_config->vp_config[i].rti.timer_ci_en =
3687                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3688
3689                 device_config->vp_config[i].rti.timer_ri_en =
3690                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3691
3692                 device_config->vp_config[i].rti.util_sel =
3693                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3694
3695                 device_config->vp_config[i].rti.urange_a =
3696                                                 RTI_RX_URANGE_A;
3697                 device_config->vp_config[i].rti.urange_b =
3698                                                 RTI_RX_URANGE_B;
3699                 device_config->vp_config[i].rti.urange_c =
3700                                                 RTI_RX_URANGE_C;
3701                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3702                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3703                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3704                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3705
3706                 device_config->vp_config[i].rti.rtimer_val =
3707                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3708
3709                 device_config->vp_config[i].rti.ltimer_val =
3710                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3711
3712                 device_config->vp_config[i].rpa_strip_vlan_tag =
3713                         vlan_tag_strip;
3714         }
3715
3716         driver_config->vpath_per_dev = temp;
3717         return no_of_vpaths;
3718 }
3719
3720 /* initialize device configuratrions */
3721 static void __devinit vxge_device_config_init(
3722                                 struct vxge_hw_device_config *device_config,
3723                                 int *intr_type)
3724 {
3725         /* Used for CQRQ/SRQ. */
3726         device_config->dma_blockpool_initial =
3727                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3728
3729         device_config->dma_blockpool_max =
3730                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3731
3732         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3733                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3734
3735 #ifndef CONFIG_PCI_MSI
3736         vxge_debug_init(VXGE_ERR,
3737                 "%s: This Kernel does not support "
3738                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3739         *intr_type = INTA;
3740 #endif
3741
3742         /* Configure whether MSI-X or IRQL. */
3743         switch (*intr_type) {
3744         case INTA:
3745                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3746                 break;
3747
3748         case MSI_X:
3749                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3750                 break;
3751         }
3752         /* Timer period between device poll */
3753         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3754
3755         /* Configure mac based steering. */
3756         device_config->rts_mac_en = addr_learn_en;
3757
3758         /* Configure Vpaths */
3759         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3760
3761         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3762                         __func__);
3763         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3764                         device_config->dma_blockpool_initial);
3765         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3766                         device_config->dma_blockpool_max);
3767         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3768                         device_config->intr_mode);
3769         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3770                         device_config->device_poll_millis);
3771         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3772                         device_config->rts_mac_en);
3773         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3774                         device_config->rth_en);
3775         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3776                         device_config->rth_it_type);
3777 }
3778
3779 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3780 {
3781         int i;
3782
3783         vxge_debug_init(VXGE_TRACE,
3784                 "%s: %d Vpath(s) opened",
3785                 vdev->ndev->name, vdev->no_of_vpath);
3786
3787         switch (vdev->config.intr_type) {
3788         case INTA:
3789                 vxge_debug_init(VXGE_TRACE,
3790                         "%s: Interrupt type INTA", vdev->ndev->name);
3791                 break;
3792
3793         case MSI_X:
3794                 vxge_debug_init(VXGE_TRACE,
3795                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3796                 break;
3797         }
3798
3799         if (vdev->config.rth_steering) {
3800                 vxge_debug_init(VXGE_TRACE,
3801                         "%s: RTH steering enabled for TCP_IPV4",
3802                         vdev->ndev->name);
3803         } else {
3804                 vxge_debug_init(VXGE_TRACE,
3805                         "%s: RTH steering disabled", vdev->ndev->name);
3806         }
3807
3808         switch (vdev->config.tx_steering_type) {
3809         case NO_STEERING:
3810                 vxge_debug_init(VXGE_TRACE,
3811                         "%s: Tx steering disabled", vdev->ndev->name);
3812                 break;
3813         case TX_PRIORITY_STEERING:
3814                 vxge_debug_init(VXGE_TRACE,
3815                         "%s: Unsupported tx steering option",
3816                         vdev->ndev->name);
3817                 vxge_debug_init(VXGE_TRACE,
3818                         "%s: Tx steering disabled", vdev->ndev->name);
3819                 vdev->config.tx_steering_type = 0;
3820                 break;
3821         case TX_VLAN_STEERING:
3822                 vxge_debug_init(VXGE_TRACE,
3823                         "%s: Unsupported tx steering option",
3824                         vdev->ndev->name);
3825                 vxge_debug_init(VXGE_TRACE,
3826                         "%s: Tx steering disabled", vdev->ndev->name);
3827                 vdev->config.tx_steering_type = 0;
3828                 break;
3829         case TX_MULTIQ_STEERING:
3830                 vxge_debug_init(VXGE_TRACE,
3831                         "%s: Tx multiqueue steering enabled",
3832                         vdev->ndev->name);
3833                 break;
3834         case TX_PORT_STEERING:
3835                 vxge_debug_init(VXGE_TRACE,
3836                         "%s: Tx port steering enabled",
3837                         vdev->ndev->name);
3838                 break;
3839         default:
3840                 vxge_debug_init(VXGE_ERR,
3841                         "%s: Unsupported tx steering type",
3842                         vdev->ndev->name);
3843                 vxge_debug_init(VXGE_TRACE,
3844                         "%s: Tx steering disabled", vdev->ndev->name);
3845                 vdev->config.tx_steering_type = 0;
3846         }
3847
3848         if (vdev->config.gro_enable) {
3849                 vxge_debug_init(VXGE_ERR,
3850                         "%s: Generic receive offload enabled",
3851                         vdev->ndev->name);
3852         } else
3853                 vxge_debug_init(VXGE_TRACE,
3854                         "%s: Generic receive offload disabled",
3855                         vdev->ndev->name);
3856
3857         if (vdev->config.addr_learn_en)
3858                 vxge_debug_init(VXGE_TRACE,
3859                         "%s: MAC Address learning enabled", vdev->ndev->name);
3860
3861         vxge_debug_init(VXGE_TRACE,
3862                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3863
3864         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3865                 if (!vxge_bVALn(vpath_mask, i, 1))
3866                         continue;
3867                 vxge_debug_ll_config(VXGE_TRACE,
3868                         "%s: MTU size - %d", vdev->ndev->name,
3869                         ((struct __vxge_hw_device  *)(vdev->devh))->
3870                                 config.vp_config[i].mtu);
3871                 vxge_debug_init(VXGE_TRACE,
3872                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3873                         ((struct __vxge_hw_device  *)(vdev->devh))->
3874                                 config.vp_config[i].rpa_strip_vlan_tag
3875                         ? "Enabled" : "Disabled");
3876                 vxge_debug_init(VXGE_TRACE,
3877                         "%s: Ring blocks : %d", vdev->ndev->name,
3878                         ((struct __vxge_hw_device  *)(vdev->devh))->
3879                                 config.vp_config[i].ring.ring_blocks);
3880                 vxge_debug_init(VXGE_TRACE,
3881                         "%s: Fifo blocks : %d", vdev->ndev->name,
3882                         ((struct __vxge_hw_device  *)(vdev->devh))->
3883                                 config.vp_config[i].fifo.fifo_blocks);
3884                 vxge_debug_ll_config(VXGE_TRACE,
3885                         "%s: Max frags : %d", vdev->ndev->name,
3886                         ((struct __vxge_hw_device  *)(vdev->devh))->
3887                                 config.vp_config[i].fifo.max_frags);
3888                 break;
3889         }
3890 }
3891
3892 #ifdef CONFIG_PM
3893 /**
3894  * vxge_pm_suspend - vxge power management suspend entry point
3895  *
3896  */
3897 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3898 {
3899         return -ENOSYS;
3900 }
3901 /**
3902  * vxge_pm_resume - vxge power management resume entry point
3903  *
3904  */
3905 static int vxge_pm_resume(struct pci_dev *pdev)
3906 {
3907         return -ENOSYS;
3908 }
3909
3910 #endif
3911
3912 /**
3913  * vxge_io_error_detected - called when PCI error is detected
3914  * @pdev: Pointer to PCI device
3915  * @state: The current pci connection state
3916  *
3917  * This function is called after a PCI bus error affecting
3918  * this device has been detected.
3919  */
3920 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3921                                                 pci_channel_state_t state)
3922 {
3923         struct __vxge_hw_device  *hldev =
3924                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3925         struct net_device *netdev = hldev->ndev;
3926
3927         netif_device_detach(netdev);
3928
3929         if (state == pci_channel_io_perm_failure)
3930                 return PCI_ERS_RESULT_DISCONNECT;
3931
3932         if (netif_running(netdev)) {
3933                 /* Bring down the card, while avoiding PCI I/O */
3934                 do_vxge_close(netdev, 0);
3935         }
3936
3937         pci_disable_device(pdev);
3938
3939         return PCI_ERS_RESULT_NEED_RESET;
3940 }
3941
3942 /**
3943  * vxge_io_slot_reset - called after the pci bus has been reset.
3944  * @pdev: Pointer to PCI device
3945  *
3946  * Restart the card from scratch, as if from a cold-boot.
3947  * At this point, the card has exprienced a hard reset,
3948  * followed by fixups by BIOS, and has its config space
3949  * set up identically to what it was at cold boot.
3950  */
3951 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3952 {
3953         struct __vxge_hw_device  *hldev =
3954                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3955         struct net_device *netdev = hldev->ndev;
3956
3957         struct vxgedev *vdev = netdev_priv(netdev);
3958
3959         if (pci_enable_device(pdev)) {
3960                 printk(KERN_ERR "%s: "
3961                         "Cannot re-enable device after reset\n",
3962                         VXGE_DRIVER_NAME);
3963                 return PCI_ERS_RESULT_DISCONNECT;
3964         }
3965
3966         pci_set_master(pdev);
3967         vxge_reset(vdev);
3968
3969         return PCI_ERS_RESULT_RECOVERED;
3970 }
3971
3972 /**
3973  * vxge_io_resume - called when traffic can start flowing again.
3974  * @pdev: Pointer to PCI device
3975  *
3976  * This callback is called when the error recovery driver tells
3977  * us that its OK to resume normal operation.
3978  */
3979 static void vxge_io_resume(struct pci_dev *pdev)
3980 {
3981         struct __vxge_hw_device  *hldev =
3982                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3983         struct net_device *netdev = hldev->ndev;
3984
3985         if (netif_running(netdev)) {
3986                 if (vxge_open(netdev)) {
3987                         printk(KERN_ERR "%s: "
3988                                 "Can't bring device back up after reset\n",
3989                                 VXGE_DRIVER_NAME);
3990                         return;
3991                 }
3992         }
3993
3994         netif_device_attach(netdev);
3995 }
3996
3997 /**
3998  * vxge_probe
3999  * @pdev : structure containing the PCI related information of the device.
4000  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4001  * Description:
4002  * This function is called when a new PCI device gets detected and initializes
4003  * it.
4004  * Return value:
4005  * returns 0 on success and negative on failure.
4006  *
4007  */
4008 static int __devinit
4009 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4010 {
4011         struct __vxge_hw_device  *hldev;
4012         enum vxge_hw_status status;
4013         int ret;
4014         int high_dma = 0;
4015         u64 vpath_mask = 0;
4016         struct vxgedev *vdev;
4017         struct vxge_config ll_config;
4018         struct vxge_hw_device_config *device_config = NULL;
4019         struct vxge_hw_device_attr attr;
4020         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4021         u8 *macaddr;
4022         struct vxge_mac_addrs *entry;
4023         static int bus = -1, device = -1;
4024         u8 new_device = 0;
4025
4026         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4027         attr.pdev = pdev;
4028
4029         if (bus != pdev->bus->number)
4030                 new_device = 1;
4031         if (device != PCI_SLOT(pdev->devfn))
4032                 new_device = 1;
4033
4034         bus = pdev->bus->number;
4035         device = PCI_SLOT(pdev->devfn);
4036
4037         if (new_device) {
4038                 if (driver_config->config_dev_cnt &&
4039                    (driver_config->config_dev_cnt !=
4040                         driver_config->total_dev_cnt))
4041                         vxge_debug_init(VXGE_ERR,
4042                                 "%s: Configured %d of %d devices",
4043                                 VXGE_DRIVER_NAME,
4044                                 driver_config->config_dev_cnt,
4045                                 driver_config->total_dev_cnt);
4046                 driver_config->config_dev_cnt = 0;
4047                 driver_config->total_dev_cnt = 0;
4048                 driver_config->g_no_cpus = 0;
4049         }
4050
4051         driver_config->vpath_per_dev = max_config_vpath;
4052
4053         driver_config->total_dev_cnt++;
4054         if (++driver_config->config_dev_cnt > max_config_dev) {
4055                 ret = 0;
4056                 goto _exit0;
4057         }
4058
4059         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4060                 GFP_KERNEL);
4061         if (!device_config) {
4062                 ret = -ENOMEM;
4063                 vxge_debug_init(VXGE_ERR,
4064                         "device_config : malloc failed %s %d",
4065                         __FILE__, __LINE__);
4066                 goto _exit0;
4067         }
4068
4069         memset(&ll_config, 0, sizeof(struct vxge_config));
4070         ll_config.tx_steering_type = TX_MULTIQ_STEERING;
4071         ll_config.intr_type = MSI_X;
4072         ll_config.napi_weight = NEW_NAPI_WEIGHT;
4073         ll_config.rth_steering = RTH_STEERING;
4074
4075         /* get the default configuration parameters */
4076         vxge_hw_device_config_default_get(device_config);
4077
4078         /* initialize configuration parameters */
4079         vxge_device_config_init(device_config, &ll_config.intr_type);
4080
4081         ret = pci_enable_device(pdev);
4082         if (ret) {
4083                 vxge_debug_init(VXGE_ERR,
4084                         "%s : can not enable PCI device", __func__);
4085                 goto _exit0;
4086         }
4087
4088         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4089                 vxge_debug_ll_config(VXGE_TRACE,
4090                         "%s : using 64bit DMA", __func__);
4091
4092                 high_dma = 1;
4093
4094                 if (pci_set_consistent_dma_mask(pdev,
4095                                                 DMA_BIT_MASK(64))) {
4096                         vxge_debug_init(VXGE_ERR,
4097                                 "%s : unable to obtain 64bit DMA for "
4098                                 "consistent allocations", __func__);
4099                         ret = -ENOMEM;
4100                         goto _exit1;
4101                 }
4102         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4103                 vxge_debug_ll_config(VXGE_TRACE,
4104                         "%s : using 32bit DMA", __func__);
4105         } else {
4106                 ret = -ENOMEM;
4107                 goto _exit1;
4108         }
4109
4110         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4111                 vxge_debug_init(VXGE_ERR,
4112                         "%s : request regions failed", __func__);
4113                 ret = -ENODEV;
4114                 goto _exit1;
4115         }
4116
4117         pci_set_master(pdev);
4118
4119         attr.bar0 = pci_ioremap_bar(pdev, 0);
4120         if (!attr.bar0) {
4121                 vxge_debug_init(VXGE_ERR,
4122                         "%s : cannot remap io memory bar0", __func__);
4123                 ret = -ENODEV;
4124                 goto _exit2;
4125         }
4126         vxge_debug_ll_config(VXGE_TRACE,
4127                 "pci ioremap bar0: %p:0x%llx",
4128                 attr.bar0,
4129                 (unsigned long long)pci_resource_start(pdev, 0));
4130
4131         status = vxge_hw_device_hw_info_get(attr.bar0,
4132                         &ll_config.device_hw_info);
4133         if (status != VXGE_HW_OK) {
4134                 vxge_debug_init(VXGE_ERR,
4135                         "%s: Reading of hardware info failed."
4136                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4137                 ret = -EINVAL;
4138                 goto _exit3;
4139         }
4140
4141         if (ll_config.device_hw_info.fw_version.major !=
4142                 VXGE_DRIVER_FW_VERSION_MAJOR) {
4143                 vxge_debug_init(VXGE_ERR,
4144                         "%s: Incorrect firmware version."
4145                         "Please upgrade the firmware to version 1.x.x",
4146                         VXGE_DRIVER_NAME);
4147                 ret = -EINVAL;
4148                 goto _exit3;
4149         }
4150
4151         vpath_mask = ll_config.device_hw_info.vpath_mask;
4152         if (vpath_mask == 0) {
4153                 vxge_debug_ll_config(VXGE_TRACE,
4154                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4155                 ret = -EINVAL;
4156                 goto _exit3;
4157         }
4158
4159         vxge_debug_ll_config(VXGE_TRACE,
4160                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4161                 (unsigned long long)vpath_mask);
4162
4163         /* Check how many vpaths are available */
4164         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4165                 if (!((vpath_mask) & vxge_mBIT(i)))
4166                         continue;
4167                 max_vpath_supported++;
4168         }
4169
4170         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4171         if ((VXGE_HW_FUNCTION_MODE_SRIOV ==
4172                 ll_config.device_hw_info.function_mode) &&
4173                 (max_config_dev > 1) && (pdev->is_physfn)) {
4174                         ret = pci_enable_sriov(pdev, max_config_dev - 1);
4175                         if (ret)
4176                                 vxge_debug_ll_config(VXGE_ERR,
4177                                         "Failed to enable SRIOV: %d\n", ret);
4178         }
4179
4180         /*
4181          * Configure vpaths and get driver configured number of vpaths
4182          * which is less than or equal to the maximum vpaths per function.
4183          */
4184         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
4185         if (!no_of_vpath) {
4186                 vxge_debug_ll_config(VXGE_ERR,
4187                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4188                 ret = 0;
4189                 goto _exit3;
4190         }
4191
4192         /* Setting driver callbacks */
4193         attr.uld_callbacks.link_up = vxge_callback_link_up;
4194         attr.uld_callbacks.link_down = vxge_callback_link_down;
4195         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4196
4197         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4198         if (status != VXGE_HW_OK) {
4199                 vxge_debug_init(VXGE_ERR,
4200                         "Failed to initialize device (%d)", status);
4201                         ret = -EINVAL;
4202                         goto _exit3;
4203         }
4204
4205         /* if FCS stripping is not disabled in MAC fail driver load */
4206         if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) {
4207                 vxge_debug_init(VXGE_ERR,
4208                         "%s: FCS stripping is not disabled in MAC"
4209                         " failing driver load", VXGE_DRIVER_NAME);
4210                 ret = -EINVAL;
4211                 goto _exit4;
4212         }
4213
4214         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4215
4216         /* set private device info */
4217         pci_set_drvdata(pdev, hldev);
4218
4219         ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4220         ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4221         ll_config.addr_learn_en = addr_learn_en;
4222         ll_config.rth_algorithm = RTH_ALG_JENKINS;
4223         ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4224         ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4225         ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4226         ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4227         ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4228         ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4229         ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
4230         ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4231         ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4232
4233         if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
4234                 &vdev)) {
4235                 ret = -EINVAL;
4236                 goto _exit4;
4237         }
4238
4239         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4240         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4241                 vxge_hw_device_trace_level_get(hldev));
4242
4243         /* set private HW device info */
4244         hldev->ndev = vdev->ndev;
4245         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4246         vdev->bar0 = attr.bar0;
4247         vdev->max_vpath_supported = max_vpath_supported;
4248         vdev->no_of_vpath = no_of_vpath;
4249
4250         /* Virtual Path count */
4251         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4252                 if (!vxge_bVALn(vpath_mask, i, 1))
4253                         continue;
4254                 if (j >= vdev->no_of_vpath)
4255                         break;
4256
4257                 vdev->vpaths[j].is_configured = 1;
4258                 vdev->vpaths[j].device_id = i;
4259                 vdev->vpaths[j].fifo.driver_id = j;
4260                 vdev->vpaths[j].ring.driver_id = j;
4261                 vdev->vpaths[j].vdev = vdev;
4262                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4263                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4264                                 (u8 *)ll_config.device_hw_info.mac_addrs[i],
4265                                 ETH_ALEN);
4266
4267                 /* Initialize the mac address list header */
4268                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4269
4270                 vdev->vpaths[j].mac_addr_cnt = 0;
4271                 vdev->vpaths[j].mcast_addr_cnt = 0;
4272                 j++;
4273         }
4274         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4275         vdev->max_config_port = max_config_port;
4276
4277         vdev->vlan_tag_strip = vlan_tag_strip;
4278
4279         /* map the hashing selector table to the configured vpaths */
4280         for (i = 0; i < vdev->no_of_vpath; i++)
4281                 vdev->vpath_selector[i] = vpath_selector[i];
4282
4283         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4284
4285         ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4286         ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4287         ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4288
4289         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4290                 vdev->ndev->name, ll_config.device_hw_info.serial_number);
4291
4292         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4293                 vdev->ndev->name, ll_config.device_hw_info.part_number);
4294
4295         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4296                 vdev->ndev->name, ll_config.device_hw_info.product_desc);
4297
4298         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4299                 vdev->ndev->name, macaddr);
4300
4301         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4302                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4303
4304         vxge_debug_init(VXGE_TRACE,
4305                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4306                 ll_config.device_hw_info.fw_version.version,
4307                 ll_config.device_hw_info.fw_date.date);
4308
4309         if (new_device) {
4310                 switch (ll_config.device_hw_info.function_mode) {
4311                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4312                         vxge_debug_init(VXGE_TRACE,
4313                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4314                 break;
4315                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4316                         vxge_debug_init(VXGE_TRACE,
4317                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4318                 break;
4319                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4320                         vxge_debug_init(VXGE_TRACE,
4321                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4322                 break;
4323                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4324                         vxge_debug_init(VXGE_TRACE,
4325                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4326                 break;
4327                 }
4328         }
4329
4330         vxge_print_parm(vdev, vpath_mask);
4331
4332         /* Store the fw version for ethttool option */
4333         strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
4334         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4335         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4336
4337         /* Copy the station mac address to the list */
4338         for (i = 0; i < vdev->no_of_vpath; i++) {
4339                 entry = (struct vxge_mac_addrs *)
4340                                 kzalloc(sizeof(struct vxge_mac_addrs),
4341                                         GFP_KERNEL);
4342                 if (NULL == entry) {
4343                         vxge_debug_init(VXGE_ERR,
4344                                 "%s: mac_addr_list : memory allocation failed",
4345                                 vdev->ndev->name);
4346                         ret = -EPERM;
4347                         goto _exit5;
4348                 }
4349                 macaddr = (u8 *)&entry->macaddr;
4350                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4351                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4352                 vdev->vpaths[i].mac_addr_cnt = 1;
4353         }
4354
4355         kfree(device_config);
4356
4357         /*
4358          * INTA is shared in multi-function mode. This is unlike the INTA
4359          * implementation in MR mode, where each VH has its own INTA message.
4360          * - INTA is masked (disabled) as long as at least one function sets
4361          * its TITAN_MASK_ALL_INT.ALARM bit.
4362          * - INTA is unmasked (enabled) when all enabled functions have cleared
4363          * their own TITAN_MASK_ALL_INT.ALARM bit.
4364          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4365          * Though this driver leaves the top level interrupts unmasked while
4366          * leaving the required module interrupt bits masked on exit, there
4367          * could be a rougue driver around that does not follow this procedure
4368          * resulting in a failure to generate interrupts. The following code is
4369          * present to prevent such a failure.
4370          */
4371
4372         if (ll_config.device_hw_info.function_mode ==
4373                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4374                 if (vdev->config.intr_type == INTA)
4375                         vxge_hw_device_unmask_all(hldev);
4376
4377         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4378                 vdev->ndev->name, __func__, __LINE__);
4379
4380         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4381         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4382                 vxge_hw_device_trace_level_get(hldev));
4383
4384         return 0;
4385
4386 _exit5:
4387         for (i = 0; i < vdev->no_of_vpath; i++)
4388                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4389
4390         vxge_device_unregister(hldev);
4391 _exit4:
4392         pci_disable_sriov(pdev);
4393         vxge_hw_device_terminate(hldev);
4394 _exit3:
4395         iounmap(attr.bar0);
4396 _exit2:
4397         pci_release_regions(pdev);
4398 _exit1:
4399         pci_disable_device(pdev);
4400 _exit0:
4401         kfree(device_config);
4402         driver_config->config_dev_cnt--;
4403         pci_set_drvdata(pdev, NULL);
4404         return ret;
4405 }
4406
4407 /**
4408  * vxge_rem_nic - Free the PCI device
4409  * @pdev: structure containing the PCI related information of the device.
4410  * Description: This function is called by the Pci subsystem to release a
4411  * PCI device and free up all resource held up by the device.
4412  */
4413 static void __devexit
4414 vxge_remove(struct pci_dev *pdev)
4415 {
4416         struct __vxge_hw_device  *hldev;
4417         struct vxgedev *vdev = NULL;
4418         struct net_device *dev;
4419         int i = 0;
4420 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4421         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4422         u32 level_trace;
4423 #endif
4424
4425         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4426
4427         if (hldev == NULL)
4428                 return;
4429         dev = hldev->ndev;
4430         vdev = netdev_priv(dev);
4431
4432 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4433         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4434         level_trace = vdev->level_trace;
4435 #endif
4436         vxge_debug_entryexit(level_trace,
4437                 "%s:%d", __func__, __LINE__);
4438
4439         vxge_debug_init(level_trace,
4440                 "%s : removing PCI device...", __func__);
4441         vxge_device_unregister(hldev);
4442
4443         for (i = 0; i < vdev->no_of_vpath; i++) {
4444                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4445                 vdev->vpaths[i].mcast_addr_cnt = 0;
4446                 vdev->vpaths[i].mac_addr_cnt = 0;
4447         }
4448
4449         kfree(vdev->vpaths);
4450
4451         iounmap(vdev->bar0);
4452
4453         pci_disable_sriov(pdev);
4454
4455         /* we are safe to free it now */
4456         free_netdev(dev);
4457
4458         vxge_debug_init(level_trace,
4459                 "%s:%d  Device unregistered", __func__, __LINE__);
4460
4461         vxge_hw_device_terminate(hldev);
4462
4463         pci_disable_device(pdev);
4464         pci_release_regions(pdev);
4465         pci_set_drvdata(pdev, NULL);
4466         vxge_debug_entryexit(level_trace,
4467                 "%s:%d  Exiting...", __func__, __LINE__);
4468 }
4469
4470 static struct pci_error_handlers vxge_err_handler = {
4471         .error_detected = vxge_io_error_detected,
4472         .slot_reset = vxge_io_slot_reset,
4473         .resume = vxge_io_resume,
4474 };
4475
4476 static struct pci_driver vxge_driver = {
4477         .name = VXGE_DRIVER_NAME,
4478         .id_table = vxge_id_table,
4479         .probe = vxge_probe,
4480         .remove = __devexit_p(vxge_remove),
4481 #ifdef CONFIG_PM
4482         .suspend = vxge_pm_suspend,
4483         .resume = vxge_pm_resume,
4484 #endif
4485         .err_handler = &vxge_err_handler,
4486 };
4487
4488 static int __init
4489 vxge_starter(void)
4490 {
4491         int ret = 0;
4492         char version[32];
4493         snprintf(version, 32, "%s", DRV_VERSION);
4494
4495         printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4496                 VXGE_DRIVER_NAME);
4497         printk(KERN_CRIT "%s: Driver version: %s\n",
4498                         VXGE_DRIVER_NAME, version);
4499
4500         verify_bandwidth();
4501
4502         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4503         if (!driver_config)
4504                 return -ENOMEM;
4505
4506         ret = pci_register_driver(&vxge_driver);
4507
4508         if (driver_config->config_dev_cnt &&
4509            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4510                 vxge_debug_init(VXGE_ERR,
4511                         "%s: Configured %d of %d devices",
4512                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4513                         driver_config->total_dev_cnt);
4514
4515         if (ret)
4516                 kfree(driver_config);
4517
4518         return ret;
4519 }
4520
4521 static void __exit
4522 vxge_closer(void)
4523 {
4524         pci_unregister_driver(&vxge_driver);
4525         kfree(driver_config);
4526 }
4527 module_init(vxge_starter);
4528 module_exit(vxge_closer);