drivers/net/vxge/vxge-main.c

   1 /******************************************************************************
   2 * This software may be used and distributed according to the terms of
   3 * the GNU General Public License (GPL), incorporated herein by reference.
   4 * Drivers based on or derived from this code fall under the GPL and must
   5 * retain the authorship, copyright and license notice.  This file is not
   6 * a complete program and may only be used when the entire operating
   7 * system is licensed under the GPL.
   8 * See the file COPYING in this distribution for more information.
   9 *
  10 * vxge-main.c: Driver for Neterion Inc's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2009 Neterion Inc.
  13 *
  14 * The module loadable parameters that are supported by the driver and a brief
  15 * explanation of all the variables:
  16 * vlan_tag_strip:
  17 *       Strip VLAN Tag enable/disable. Instructs the device to remove
  18 *       the VLAN tag from all received tagged frames that are not
  19 *       replicated at the internal L2 switch.
  20 *               0 - Do not strip the VLAN tag.
  21 *               1 - Strip the VLAN tag.
  22 *
  23 * addr_learn_en:
  24 *       Enable learning the mac address of the guest OS interface in
  25 *       a virtualization environment.
  26 *               0 - DISABLE
  27 *               1 - ENABLE
  28 *
  29 * max_config_port:
  30 *       Maximum number of port to be supported.
  31 *               MIN -1 and MAX - 2
  32 *
  33 * max_config_vpath:
  34 *       This configures the maximum no of VPATH configures for each
  35 *       device function.
  36 *               MIN - 1 and MAX - 17
  37 *
  38 * max_config_dev:
  39 *       This configures maximum no of Device function to be enabled.
  40 *               MIN - 1 and MAX - 17
  41 *
  42 ******************************************************************************/
  43
  44 #include <linux/if_vlan.h>
  45 #include <linux/pci.h>
  46 #include <linux/tcp.h>
  47 #include <net/ip.h>
  48 #include <linux/netdevice.h>
  49 #include <linux/etherdevice.h>
  50 #include "vxge-main.h"
  51 #include "vxge-reg.h"
  52
  53 MODULE_LICENSE("Dual BSD/GPL");
  54 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  55         "Virtualized Server Adapter");
  56
  57 static struct pci_device_id vxge_id_table[] __devinitdata = {
  58         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  59         PCI_ANY_ID},
  60         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  61         PCI_ANY_ID},
  62         {0}
  63 };
  64
  65 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  66
  67 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  68 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  69 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  70 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  71 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  72 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  73
  74 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  75                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  76 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  77         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  78 module_param_array(bw_percentage, uint, NULL, 0);
  79
  80 static struct vxge_drv_config *driver_config;
  81
  82 static inline int is_vxge_card_up(struct vxgedev *vdev)
  83 {
  84         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  85 }
  86
  87 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  88 {
  89         unsigned long flags = 0;
  90         struct sk_buff **skb_ptr = NULL;
  91         struct sk_buff **temp;
  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 (dma_addr == 0) {
 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, 0);
 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) && dev->mc_count) {
1182
1183                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1184                 list_head = &vdev->vpaths[0].mac_addr_list;
1185                 if ((dev->mc_count +
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                 for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
1221                         i++, mclist = mclist->next) {
1222
1223                         memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
1224                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1225                                         vpath_idx++) {
1226                                 mac_info.vpath_no = vpath_idx;
1227                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1228                                 status = vxge_add_mac_addr(vdev, &mac_info);
1229                                 if (status != VXGE_HW_OK) {
1230                                         vxge_debug_init(VXGE_ERR,
1231                                                 "%s:%d Setting individual"
1232                                                 "multicast address failed",
1233                                                 __func__, __LINE__);
1234                                         goto _set_all_mcast;
1235                                 }
1236                         }
1237                 }
1238
1239                 return;
1240 _set_all_mcast:
1241                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1242                 /* Delete previous MC's */
1243                 for (i = 0; i < mcast_cnt; i++) {
1244
1245                         list_for_each_safe(entry, next, list_head) {
1246
1247                                 mac_entry = (struct vxge_mac_addrs *) entry;
1248                                 /* Copy the mac address to delete */
1249                                 mac_address = (u8 *)&mac_entry->macaddr;
1250                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1251
1252                                 /* Is this a multicast address */
1253                                 if (0x01 & mac_info.macaddr[0])
1254                                         break;
1255                         }
1256
1257                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1258                                         vpath_idx++) {
1259                                 mac_info.vpath_no = vpath_idx;
1260                                 status = vxge_del_mac_addr(vdev, &mac_info);
1261                         }
1262                 }
1263
1264                 /* Enable all multicast */
1265                 for (i = 0; i < vdev->no_of_vpath; i++) {
1266                         vxge_assert(vdev->vpaths[i].is_open);
1267                         status = vxge_hw_vpath_mcast_enable(
1268                                                 vdev->vpaths[i].handle);
1269                         if (status != VXGE_HW_OK) {
1270                                 vxge_debug_init(VXGE_ERR,
1271                                         "%s:%d Enabling all multicasts failed",
1272                                          __func__, __LINE__);
1273                         }
1274                         vdev->all_multi_flg = 1;
1275                 }
1276                 dev->flags |= IFF_ALLMULTI;
1277         }
1278
1279         vxge_debug_entryexit(VXGE_TRACE,
1280                 "%s:%d  Exiting...", __func__, __LINE__);
1281 }
1282
1283 /**
1284  * vxge_set_mac_addr
1285  * @dev: pointer to the device structure
1286  *
1287  * Update entry "0" (default MAC addr)
1288  */
1289 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1290 {
1291         struct sockaddr *addr = p;
1292         struct vxgedev *vdev;
1293         struct __vxge_hw_device  *hldev;
1294         enum vxge_hw_status status = VXGE_HW_OK;
1295         struct macInfo mac_info_new, mac_info_old;
1296         int vpath_idx = 0;
1297
1298         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1299
1300         vdev = (struct vxgedev *)netdev_priv(dev);
1301         hldev = vdev->devh;
1302
1303         if (!is_valid_ether_addr(addr->sa_data))
1304                 return -EINVAL;
1305
1306         memset(&mac_info_new, 0, sizeof(struct macInfo));
1307         memset(&mac_info_old, 0, sizeof(struct macInfo));
1308
1309         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1310                 __func__, __LINE__);
1311
1312         /* Get the old address */
1313         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1314
1315         /* Copy the new address */
1316         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1317
1318         /* First delete the old mac address from all the vpaths
1319         as we can't specify the index while adding new mac address */
1320         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1321                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1322                 if (!vpath->is_open) {
1323                         /* This can happen when this interface is added/removed
1324                         to the bonding interface. Delete this station address
1325                         from the linked list */
1326                         vxge_mac_list_del(vpath, &mac_info_old);
1327
1328                         /* Add this new address to the linked list
1329                         for later restoring */
1330                         vxge_mac_list_add(vpath, &mac_info_new);
1331
1332                         continue;
1333                 }
1334                 /* Delete the station address */
1335                 mac_info_old.vpath_no = vpath_idx;
1336                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1337         }
1338
1339         if (unlikely(!is_vxge_card_up(vdev))) {
1340                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1341                 return VXGE_HW_OK;
1342         }
1343
1344         /* Set this mac address to all the vpaths */
1345         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1346                 mac_info_new.vpath_no = vpath_idx;
1347                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1348                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1349                 if (status != VXGE_HW_OK)
1350                         return -EINVAL;
1351         }
1352
1353         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1354
1355         return status;
1356 }
1357
1358 /*
1359  * vxge_vpath_intr_enable
1360  * @vdev: pointer to vdev
1361  * @vp_id: vpath for which to enable the interrupts
1362  *
1363  * Enables the interrupts for the vpath
1364 */
1365 void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1366 {
1367         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1368         int msix_id, alarm_msix_id;
1369         int tim_msix_id[4] = {[0 ...3] = 0};
1370
1371         vxge_hw_vpath_intr_enable(vpath->handle);
1372
1373         if (vdev->config.intr_type == INTA)
1374                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1375         else {
1376                 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1377                 alarm_msix_id =
1378                         VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1379
1380                 tim_msix_id[0] = msix_id;
1381                 tim_msix_id[1] = msix_id + 1;
1382                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1383                         alarm_msix_id);
1384
1385                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1386                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1387
1388                 /* enable the alarm vector */
1389                 vxge_hw_vpath_msix_unmask(vpath->handle, alarm_msix_id);
1390         }
1391 }
1392
1393 /*
1394  * vxge_vpath_intr_disable
1395  * @vdev: pointer to vdev
1396  * @vp_id: vpath for which to disable the interrupts
1397  *
1398  * Disables the interrupts for the vpath
1399 */
1400 void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1401 {
1402         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1403         int msix_id;
1404
1405         vxge_hw_vpath_intr_disable(vpath->handle);
1406
1407         if (vdev->config.intr_type == INTA)
1408                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1409         else {
1410                 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1411                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1412                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1413
1414                 /* disable the alarm vector */
1415                 msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1416                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1417         }
1418 }
1419
1420 /*
1421  * vxge_reset_vpath
1422  * @vdev: pointer to vdev
1423  * @vp_id: vpath to reset
1424  *
1425  * Resets the vpath
1426 */
1427 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1428 {
1429         enum vxge_hw_status status = VXGE_HW_OK;
1430         int ret = 0;
1431
1432         /* check if device is down already */
1433         if (unlikely(!is_vxge_card_up(vdev)))
1434                 return 0;
1435
1436         /* is device reset already scheduled */
1437         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1438                 return 0;
1439
1440         if (vdev->vpaths[vp_id].handle) {
1441                 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1442                                 == VXGE_HW_OK) {
1443                         if (is_vxge_card_up(vdev) &&
1444                                 vxge_hw_vpath_recover_from_reset(
1445                                         vdev->vpaths[vp_id].handle)
1446                                         != VXGE_HW_OK) {
1447                                 vxge_debug_init(VXGE_ERR,
1448                                         "vxge_hw_vpath_recover_from_reset"
1449                                         "failed for vpath:%d", vp_id);
1450                                 return status;
1451                         }
1452                 } else {
1453                         vxge_debug_init(VXGE_ERR,
1454                                 "vxge_hw_vpath_reset failed for"
1455                                 "vpath:%d", vp_id);
1456                                 return status;
1457                 }
1458         } else
1459                 return VXGE_HW_FAIL;
1460
1461         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1462         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1463
1464         /* Enable all broadcast */
1465         vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1466
1467         /* Enable the interrupts */
1468         vxge_vpath_intr_enable(vdev, vp_id);
1469
1470         smp_wmb();
1471
1472         /* Enable the flow of traffic through the vpath */
1473         vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1474
1475         smp_wmb();
1476         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1477         vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1478
1479         /* Vpath reset done */
1480         clear_bit(vp_id, &vdev->vp_reset);
1481
1482         /* Start the vpath queue */
1483         vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1484
1485         return ret;
1486 }
1487
1488 static int do_vxge_reset(struct vxgedev *vdev, int event)
1489 {
1490         enum vxge_hw_status status;
1491         int ret = 0, vp_id, i;
1492
1493         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1494
1495         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1496                 /* check if device is down already */
1497                 if (unlikely(!is_vxge_card_up(vdev)))
1498                         return 0;
1499
1500                 /* is reset already scheduled */
1501                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1502                         return 0;
1503         }
1504
1505         if (event == VXGE_LL_FULL_RESET) {
1506                 /* wait for all the vpath reset to complete */
1507                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1508                         while (test_bit(vp_id, &vdev->vp_reset))
1509                                 msleep(50);
1510                 }
1511
1512                 /* if execution mode is set to debug, don't reset the adapter */
1513                 if (unlikely(vdev->exec_mode)) {
1514                         vxge_debug_init(VXGE_ERR,
1515                                 "%s: execution mode is debug, returning..",
1516                                 vdev->ndev->name);
1517                 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1518                 vxge_stop_all_tx_queue(vdev);
1519                 return 0;
1520                 }
1521         }
1522
1523         if (event == VXGE_LL_FULL_RESET) {
1524                 vxge_hw_device_intr_disable(vdev->devh);
1525
1526                 switch (vdev->cric_err_event) {
1527                 case VXGE_HW_EVENT_UNKNOWN:
1528                         vxge_stop_all_tx_queue(vdev);
1529                         vxge_debug_init(VXGE_ERR,
1530                                 "fatal: %s: Disabling device due to"
1531                                 "unknown error",
1532                                 vdev->ndev->name);
1533                         ret = -EPERM;
1534                         goto out;
1535                 case VXGE_HW_EVENT_RESET_START:
1536                         break;
1537                 case VXGE_HW_EVENT_RESET_COMPLETE:
1538                 case VXGE_HW_EVENT_LINK_DOWN:
1539                 case VXGE_HW_EVENT_LINK_UP:
1540                 case VXGE_HW_EVENT_ALARM_CLEARED:
1541                 case VXGE_HW_EVENT_ECCERR:
1542                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1543                         ret = -EPERM;
1544                         goto out;
1545                 case VXGE_HW_EVENT_FIFO_ERR:
1546                 case VXGE_HW_EVENT_VPATH_ERR:
1547                         break;
1548                 case VXGE_HW_EVENT_CRITICAL_ERR:
1549                         vxge_stop_all_tx_queue(vdev);
1550                         vxge_debug_init(VXGE_ERR,
1551                                 "fatal: %s: Disabling device due to"
1552                                 "serious error",
1553                                 vdev->ndev->name);
1554                         /* SOP or device reset required */
1555                         /* This event is not currently used */
1556                         ret = -EPERM;
1557                         goto out;
1558                 case VXGE_HW_EVENT_SERR:
1559                         vxge_stop_all_tx_queue(vdev);
1560                         vxge_debug_init(VXGE_ERR,
1561                                 "fatal: %s: Disabling device due to"
1562                                 "serious error",
1563                                 vdev->ndev->name);
1564                         ret = -EPERM;
1565                         goto out;
1566                 case VXGE_HW_EVENT_SRPCIM_SERR:
1567                 case VXGE_HW_EVENT_MRPCIM_SERR:
1568                         ret = -EPERM;
1569                         goto out;
1570                 case VXGE_HW_EVENT_SLOT_FREEZE:
1571                         vxge_stop_all_tx_queue(vdev);
1572                         vxge_debug_init(VXGE_ERR,
1573                                 "fatal: %s: Disabling device due to"
1574                                 "slot freeze",
1575                                 vdev->ndev->name);
1576                         ret = -EPERM;
1577                         goto out;
1578                 default:
1579                         break;
1580
1581                 }
1582         }
1583
1584         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1585                 vxge_stop_all_tx_queue(vdev);
1586
1587         if (event == VXGE_LL_FULL_RESET) {
1588                 status = vxge_reset_all_vpaths(vdev);
1589                 if (status != VXGE_HW_OK) {
1590                         vxge_debug_init(VXGE_ERR,
1591                                 "fatal: %s: can not reset vpaths",
1592                                 vdev->ndev->name);
1593                         ret = -EPERM;
1594                         goto out;
1595                 }
1596         }
1597
1598         if (event == VXGE_LL_COMPL_RESET) {
1599                 for (i = 0; i < vdev->no_of_vpath; i++)
1600                         if (vdev->vpaths[i].handle) {
1601                                 if (vxge_hw_vpath_recover_from_reset(
1602                                         vdev->vpaths[i].handle)
1603                                                 != VXGE_HW_OK) {
1604                                         vxge_debug_init(VXGE_ERR,
1605                                                 "vxge_hw_vpath_recover_"
1606                                                 "from_reset failed for vpath: "
1607                                                 "%d", i);
1608                                         ret = -EPERM;
1609                                         goto out;
1610                                 }
1611                                 } else {
1612                                         vxge_debug_init(VXGE_ERR,
1613                                         "vxge_hw_vpath_reset failed for "
1614                                                 "vpath:%d", i);
1615                                         ret = -EPERM;
1616                                         goto out;
1617                                 }
1618         }
1619
1620         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1621                 /* Reprogram the DA table with populated mac addresses */
1622                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1623                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1624                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1625                 }
1626
1627                 /* enable vpath interrupts */
1628                 for (i = 0; i < vdev->no_of_vpath; i++)
1629                         vxge_vpath_intr_enable(vdev, i);
1630
1631                 vxge_hw_device_intr_enable(vdev->devh);
1632
1633                 smp_wmb();
1634
1635                 /* Indicate card up */
1636                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1637
1638                 /* Get the traffic to flow through the vpaths */
1639                 for (i = 0; i < vdev->no_of_vpath; i++) {
1640                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1641                         smp_wmb();
1642                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1643                 }
1644
1645                 vxge_wake_all_tx_queue(vdev);
1646         }
1647
1648 out:
1649         vxge_debug_entryexit(VXGE_TRACE,
1650                 "%s:%d  Exiting...", __func__, __LINE__);
1651
1652         /* Indicate reset done */
1653         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1654                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1655         return ret;
1656 }
1657
1658 /*
1659  * vxge_reset
1660  * @vdev: pointer to ll device
1661  *
1662  * driver may reset the chip on events of serr, eccerr, etc
1663  */
1664 int vxge_reset(struct vxgedev *vdev)
1665 {
1666         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1667         return 0;
1668 }
1669
1670 /**
1671  * vxge_poll - Receive handler when Receive Polling is used.
1672  * @dev: pointer to the device structure.
1673  * @budget: Number of packets budgeted to be processed in this iteration.
1674  *
1675  * This function comes into picture only if Receive side is being handled
1676  * through polling (called NAPI in linux). It mostly does what the normal
1677  * Rx interrupt handler does in terms of descriptor and packet processing
1678  * but not in an interrupt context. Also it will process a specified number
1679  * of packets at most in one iteration. This value is passed down by the
1680  * kernel as the function argument 'budget'.
1681  */
1682 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1683 {
1684         struct vxge_ring *ring =
1685                 container_of(napi, struct vxge_ring, napi);
1686         int budget_org = budget;
1687         ring->budget = budget;
1688
1689         vxge_hw_vpath_poll_rx(ring->handle);
1690
1691         if (ring->pkts_processed < budget_org) {
1692                 napi_complete(napi);
1693                 /* Re enable the Rx interrupts for the vpath */
1694                 vxge_hw_channel_msix_unmask(
1695                                 (struct __vxge_hw_channel *)ring->handle,
1696                                 ring->rx_vector_no);
1697         }
1698
1699         return ring->pkts_processed;
1700 }
1701
1702 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1703 {
1704         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1705         int pkts_processed = 0;
1706         int i;
1707         int budget_org = budget;
1708         struct vxge_ring *ring;
1709
1710         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1711                 pci_get_drvdata(vdev->pdev);
1712
1713         for (i = 0; i < vdev->no_of_vpath; i++) {
1714                 ring = &vdev->vpaths[i].ring;
1715                 ring->budget = budget;
1716                 vxge_hw_vpath_poll_rx(ring->handle);
1717                 pkts_processed += ring->pkts_processed;
1718                 budget -= ring->pkts_processed;
1719                 if (budget <= 0)
1720                         break;
1721         }
1722
1723         VXGE_COMPLETE_ALL_TX(vdev);
1724
1725         if (pkts_processed < budget_org) {
1726                 napi_complete(napi);
1727                 /* Re enable the Rx interrupts for the ring */
1728                 vxge_hw_device_unmask_all(hldev);
1729                 vxge_hw_device_flush_io(hldev);
1730         }
1731
1732         return pkts_processed;
1733 }
1734
1735 #ifdef CONFIG_NET_POLL_CONTROLLER
1736 /**
1737  * vxge_netpoll - netpoll event handler entry point
1738  * @dev : pointer to the device structure.
1739  * Description:
1740  *      This function will be called by upper layer to check for events on the
1741  * interface in situations where interrupts are disabled. It is used for
1742  * specific in-kernel networking tasks, such as remote consoles and kernel
1743  * debugging over the network (example netdump in RedHat).
1744  */
1745 static void vxge_netpoll(struct net_device *dev)
1746 {
1747         struct __vxge_hw_device  *hldev;
1748         struct vxgedev *vdev;
1749
1750         vdev = (struct vxgedev *)netdev_priv(dev);
1751         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1752
1753         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1754
1755         if (pci_channel_offline(vdev->pdev))
1756                 return;
1757
1758         disable_irq(dev->irq);
1759         vxge_hw_device_clear_tx_rx(hldev);
1760
1761         vxge_hw_device_clear_tx_rx(hldev);
1762         VXGE_COMPLETE_ALL_RX(vdev);
1763         VXGE_COMPLETE_ALL_TX(vdev);
1764
1765         enable_irq(dev->irq);
1766
1767         vxge_debug_entryexit(VXGE_TRACE,
1768                 "%s:%d  Exiting...", __func__, __LINE__);
1769         return;
1770 }
1771 #endif
1772
1773 /* RTH configuration */
1774 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1775 {
1776         enum vxge_hw_status status = VXGE_HW_OK;
1777         struct vxge_hw_rth_hash_types hash_types;
1778         u8 itable[256] = {0}; /* indirection table */
1779         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1780         int index;
1781
1782         /*
1783          * Filling
1784          *      - itable with bucket numbers
1785          *      - mtable with bucket-to-vpath mapping
1786          */
1787         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1788                 itable[index] = index;
1789                 mtable[index] = index % vdev->no_of_vpath;
1790         }
1791
1792         /* Fill RTH hash types */
1793         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1794         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1795         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1796         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1797         hash_types.hash_type_tcpipv6ex_en =
1798                                         vdev->config.rth_hash_type_tcpipv6ex;
1799         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1800
1801         /* set indirection table, bucket-to-vpath mapping */
1802         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1803                                                 vdev->no_of_vpath,
1804                                                 mtable, itable,
1805                                                 vdev->config.rth_bkt_sz);
1806         if (status != VXGE_HW_OK) {
1807                 vxge_debug_init(VXGE_ERR,
1808                         "RTH indirection table configuration failed "
1809                         "for vpath:%d", vdev->vpaths[0].device_id);
1810                 return status;
1811         }
1812
1813         /*
1814         * Because the itable_set() method uses the active_table field
1815         * for the target virtual path the RTH config should be updated
1816         * for all VPATHs. The h/w only uses the lowest numbered VPATH
1817         * when steering frames.
1818         */
1819          for (index = 0; index < vdev->no_of_vpath; index++) {
1820                 status = vxge_hw_vpath_rts_rth_set(
1821                                 vdev->vpaths[index].handle,
1822                                 vdev->config.rth_algorithm,
1823                                 &hash_types,
1824                                 vdev->config.rth_bkt_sz);
1825
1826                  if (status != VXGE_HW_OK) {
1827                         vxge_debug_init(VXGE_ERR,
1828                                 "RTH configuration failed for vpath:%d",
1829                                 vdev->vpaths[index].device_id);
1830                         return status;
1831                  }
1832          }
1833
1834         return status;
1835 }
1836
1837 int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1838 {
1839         struct vxge_mac_addrs *new_mac_entry;
1840         u8 *mac_address = NULL;
1841
1842         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1843                 return TRUE;
1844
1845         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1846         if (!new_mac_entry) {
1847                 vxge_debug_mem(VXGE_ERR,
1848                         "%s: memory allocation failed",
1849                         VXGE_DRIVER_NAME);
1850                 return FALSE;
1851         }
1852
1853         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1854
1855         /* Copy the new mac address to the list */
1856         mac_address = (u8 *)&new_mac_entry->macaddr;
1857         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1858
1859         new_mac_entry->state = mac->state;
1860         vpath->mac_addr_cnt++;
1861
1862         /* Is this a multicast address */
1863         if (0x01 & mac->macaddr[0])
1864                 vpath->mcast_addr_cnt++;
1865
1866         return TRUE;
1867 }
1868
1869 /* Add a mac address to DA table */
1870 enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1871 {
1872         enum vxge_hw_status status = VXGE_HW_OK;
1873         struct vxge_vpath *vpath;
1874         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1875
1876         if (0x01 & mac->macaddr[0]) /* multicast address */
1877                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1878         else
1879                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1880
1881         vpath = &vdev->vpaths[mac->vpath_no];
1882         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1883                                                 mac->macmask, duplicate_mode);
1884         if (status != VXGE_HW_OK) {
1885                 vxge_debug_init(VXGE_ERR,
1886                         "DA config add entry failed for vpath:%d",
1887                         vpath->device_id);
1888         } else
1889                 if (FALSE == vxge_mac_list_add(vpath, mac))
1890                         status = -EPERM;
1891
1892         return status;
1893 }
1894
1895 int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1896 {
1897         struct list_head *entry, *next;
1898         u64 del_mac = 0;
1899         u8 *mac_address = (u8 *) (&del_mac);
1900
1901         /* Copy the mac address to delete from the list */
1902         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1903
1904         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1905                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1906                         list_del(entry);
1907                         kfree((struct vxge_mac_addrs *)entry);
1908                         vpath->mac_addr_cnt--;
1909
1910                         /* Is this a multicast address */
1911                         if (0x01 & mac->macaddr[0])
1912                                 vpath->mcast_addr_cnt--;
1913                         return TRUE;
1914                 }
1915         }
1916
1917         return FALSE;
1918 }
1919 /* delete a mac address from DA table */
1920 enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1921 {
1922         enum vxge_hw_status status = VXGE_HW_OK;
1923         struct vxge_vpath *vpath;
1924
1925         vpath = &vdev->vpaths[mac->vpath_no];
1926         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1927                                                 mac->macmask);
1928         if (status != VXGE_HW_OK) {
1929                 vxge_debug_init(VXGE_ERR,
1930                         "DA config delete entry failed for vpath:%d",
1931                         vpath->device_id);
1932         } else
1933                 vxge_mac_list_del(vpath, mac);
1934         return status;
1935 }
1936
1937 /* list all mac addresses from DA table */
1938 enum vxge_hw_status
1939 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1940                                         struct macInfo *mac)
1941 {
1942         enum vxge_hw_status status = VXGE_HW_OK;
1943         unsigned char macmask[ETH_ALEN];
1944         unsigned char macaddr[ETH_ALEN];
1945
1946         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1947                                 macaddr, macmask);
1948         if (status != VXGE_HW_OK) {
1949                 vxge_debug_init(VXGE_ERR,
1950                         "DA config list entry failed for vpath:%d",
1951                         vpath->device_id);
1952                 return status;
1953         }
1954
1955         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1956
1957                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1958                                 macaddr, macmask);
1959                 if (status != VXGE_HW_OK)
1960                         break;
1961         }
1962
1963         return status;
1964 }
1965
1966 /* Store all vlan ids from the list to the vid table */
1967 enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1968 {
1969         enum vxge_hw_status status = VXGE_HW_OK;
1970         struct vxgedev *vdev = vpath->vdev;
1971         u16 vid;
1972
1973         if (vdev->vlgrp && vpath->is_open) {
1974
1975                 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1976                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1977                                 continue;
1978                         /* Add these vlan to the vid table */
1979                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1980                 }
1981         }
1982
1983         return status;
1984 }
1985
1986 /* Store all mac addresses from the list to the DA table */
1987 enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1988 {
1989         enum vxge_hw_status status = VXGE_HW_OK;
1990         struct macInfo mac_info;
1991         u8 *mac_address = NULL;
1992         struct list_head *entry, *next;
1993
1994         memset(&mac_info, 0, sizeof(struct macInfo));
1995
1996         if (vpath->is_open) {
1997
1998                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1999                         mac_address =
2000                                 (u8 *)&
2001                                 ((struct vxge_mac_addrs *)entry)->macaddr;
2002                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
2003                         ((struct vxge_mac_addrs *)entry)->state =
2004                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
2005                         /* does this mac address already exist in da table? */
2006                         status = vxge_search_mac_addr_in_da_table(vpath,
2007                                 &mac_info);
2008                         if (status != VXGE_HW_OK) {
2009                                 /* Add this mac address to the DA table */
2010                                 status = vxge_hw_vpath_mac_addr_add(
2011                                         vpath->handle, mac_info.macaddr,
2012                                         mac_info.macmask,
2013                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
2014                                 if (status != VXGE_HW_OK) {
2015                                         vxge_debug_init(VXGE_ERR,
2016                                             "DA add entry failed for vpath:%d",
2017                                             vpath->device_id);
2018                                         ((struct vxge_mac_addrs *)entry)->state
2019                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
2020                                 }
2021                         }
2022                 }
2023         }
2024
2025         return status;
2026 }
2027
2028 /* reset vpaths */
2029 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
2030 {
2031         int i;
2032         enum vxge_hw_status status = VXGE_HW_OK;
2033
2034         for (i = 0; i < vdev->no_of_vpath; i++)
2035                 if (vdev->vpaths[i].handle) {
2036                         if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
2037                                         == VXGE_HW_OK) {
2038                                 if (is_vxge_card_up(vdev) &&
2039                                         vxge_hw_vpath_recover_from_reset(
2040                                                 vdev->vpaths[i].handle)
2041                                                 != VXGE_HW_OK) {
2042                                         vxge_debug_init(VXGE_ERR,
2043                                                 "vxge_hw_vpath_recover_"
2044                                                 "from_reset failed for vpath: "
2045                                                 "%d", i);
2046                                         return status;
2047                                 }
2048                         } else {
2049                                 vxge_debug_init(VXGE_ERR,
2050                                         "vxge_hw_vpath_reset failed for "
2051                                         "vpath:%d", i);
2052                                         return status;
2053                         }
2054                 }
2055         return status;
2056 }
2057
2058 /* close vpaths */
2059 void vxge_close_vpaths(struct vxgedev *vdev, int index)
2060 {
2061         int i;
2062         for (i = index; i < vdev->no_of_vpath; i++) {
2063                 if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
2064                         vxge_hw_vpath_close(vdev->vpaths[i].handle);
2065                         vdev->stats.vpaths_open--;
2066                 }
2067                 vdev->vpaths[i].is_open = 0;
2068                 vdev->vpaths[i].handle  = NULL;
2069         }
2070 }
2071
2072 /* open vpaths */
2073 int vxge_open_vpaths(struct vxgedev *vdev)
2074 {
2075         enum vxge_hw_status status;
2076         int i;
2077         u32 vp_id = 0;
2078         struct vxge_hw_vpath_attr attr;
2079
2080         for (i = 0; i < vdev->no_of_vpath; i++) {
2081                 vxge_assert(vdev->vpaths[i].is_configured);
2082                 attr.vp_id = vdev->vpaths[i].device_id;
2083                 attr.fifo_attr.callback = vxge_xmit_compl;
2084                 attr.fifo_attr.txdl_term = vxge_tx_term;
2085                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2086                 attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
2087
2088                 attr.ring_attr.callback = vxge_rx_1b_compl;
2089                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2090                 attr.ring_attr.rxd_term = vxge_rx_term;
2091                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2092                 attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
2093
2094                 vdev->vpaths[i].ring.ndev = vdev->ndev;
2095                 vdev->vpaths[i].ring.pdev = vdev->pdev;
2096                 status = vxge_hw_vpath_open(vdev->devh, &attr,
2097                                 &(vdev->vpaths[i].handle));
2098                 if (status == VXGE_HW_OK) {
2099                         vdev->vpaths[i].fifo.handle =
2100                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2101                         vdev->vpaths[i].ring.handle =
2102                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2103                         vdev->vpaths[i].fifo.tx_steering_type =
2104                                 vdev->config.tx_steering_type;
2105                         vdev->vpaths[i].fifo.ndev = vdev->ndev;
2106                         vdev->vpaths[i].fifo.pdev = vdev->pdev;
2107                         vdev->vpaths[i].fifo.indicate_max_pkts =
2108                                 vdev->config.fifo_indicate_max_pkts;
2109                         vdev->vpaths[i].ring.rx_vector_no = 0;
2110                         vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
2111                         vdev->vpaths[i].is_open = 1;
2112                         vdev->vp_handles[i] = vdev->vpaths[i].handle;
2113                         vdev->vpaths[i].ring.gro_enable =
2114                                                 vdev->config.gro_enable;
2115                         vdev->vpaths[i].ring.vlan_tag_strip =
2116                                                 vdev->vlan_tag_strip;
2117                         vdev->stats.vpaths_open++;
2118                 } else {
2119                         vdev->stats.vpath_open_fail++;
2120                         vxge_debug_init(VXGE_ERR,
2121                                 "%s: vpath: %d failed to open "
2122                                 "with status: %d",
2123                             vdev->ndev->name, vdev->vpaths[i].device_id,
2124                                 status);
2125                         vxge_close_vpaths(vdev, 0);
2126                         return -EPERM;
2127                 }
2128
2129                 vp_id =
2130                   ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
2131                   vpath->vp_id;
2132                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2133         }
2134         return VXGE_HW_OK;
2135 }
2136
2137 /*
2138  *  vxge_isr_napi
2139  *  @irq: the irq of the device.
2140  *  @dev_id: a void pointer to the hldev structure of the Titan device
2141  *  @ptregs: pointer to the registers pushed on the stack.
2142  *
2143  *  This function is the ISR handler of the device when napi is enabled. It
2144  *  identifies the reason for the interrupt and calls the relevant service
2145  *  routines.
2146  */
2147 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2148 {
2149         struct net_device *dev;
2150         struct __vxge_hw_device *hldev;
2151         u64 reason;
2152         enum vxge_hw_status status;
2153         struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2154
2155         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2156
2157         dev = vdev->ndev;
2158         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2159
2160         if (pci_channel_offline(vdev->pdev))
2161                 return IRQ_NONE;
2162
2163         if (unlikely(!is_vxge_card_up(vdev)))
2164                 return IRQ_NONE;
2165
2166         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2167                         &reason);
2168         if (status == VXGE_HW_OK) {
2169                 vxge_hw_device_mask_all(hldev);
2170
2171                 if (reason &
2172                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2173                         vdev->vpaths_deployed >>
2174                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2175
2176                         vxge_hw_device_clear_tx_rx(hldev);
2177                         napi_schedule(&vdev->napi);
2178                         vxge_debug_intr(VXGE_TRACE,
2179                                 "%s:%d  Exiting...", __func__, __LINE__);
2180                         return IRQ_HANDLED;
2181                 } else
2182                         vxge_hw_device_unmask_all(hldev);
2183         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2184                 (status == VXGE_HW_ERR_CRITICAL) ||
2185                 (status == VXGE_HW_ERR_FIFO))) {
2186                 vxge_hw_device_mask_all(hldev);
2187                 vxge_hw_device_flush_io(hldev);
2188                 return IRQ_HANDLED;
2189         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2190                 return IRQ_HANDLED;
2191
2192         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2193         return IRQ_NONE;
2194 }
2195
2196 #ifdef CONFIG_PCI_MSI
2197
2198 static irqreturn_t
2199 vxge_tx_msix_handle(int irq, void *dev_id)
2200 {
2201         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2202
2203         VXGE_COMPLETE_VPATH_TX(fifo);
2204
2205         return IRQ_HANDLED;
2206 }
2207
2208 static irqreturn_t
2209 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2210 {
2211         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2212
2213         /* MSIX_IDX for Rx is 1 */
2214         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2215                                         ring->rx_vector_no);
2216
2217         napi_schedule(&ring->napi);
2218         return IRQ_HANDLED;
2219 }
2220
2221 static irqreturn_t
2222 vxge_alarm_msix_handle(int irq, void *dev_id)
2223 {
2224         int i;
2225         enum vxge_hw_status status;
2226         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2227         struct vxgedev *vdev = vpath->vdev;
2228         int alarm_msix_id =
2229                 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2230
2231         for (i = 0; i < vdev->no_of_vpath; i++) {
2232                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
2233                         alarm_msix_id);
2234
2235                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2236                         vdev->exec_mode);
2237                 if (status == VXGE_HW_OK) {
2238
2239                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2240                                 alarm_msix_id);
2241                         continue;
2242                 }
2243                 vxge_debug_intr(VXGE_ERR,
2244                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2245                         VXGE_DRIVER_NAME, status);
2246         }
2247         return IRQ_HANDLED;
2248 }
2249
2250 static int vxge_alloc_msix(struct vxgedev *vdev)
2251 {
2252         int j, i, ret = 0;
2253         int intr_cnt = 0;
2254         int alarm_msix_id = 0, msix_intr_vect = 0;
2255         vdev->intr_cnt = 0;
2256
2257         /* Tx/Rx MSIX Vectors count */
2258         vdev->intr_cnt = vdev->no_of_vpath * 2;
2259
2260         /* Alarm MSIX Vectors count */
2261         vdev->intr_cnt++;
2262
2263         intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2264         vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
2265                                                 GFP_KERNEL);
2266         if (!vdev->entries) {
2267                 vxge_debug_init(VXGE_ERR,
2268                         "%s: memory allocation failed",
2269                         VXGE_DRIVER_NAME);
2270                 return  -ENOMEM;
2271         }
2272
2273         vdev->vxge_entries = kzalloc(intr_cnt * sizeof(struct vxge_msix_entry),
2274                                                         GFP_KERNEL);
2275         if (!vdev->vxge_entries) {
2276                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2277                         VXGE_DRIVER_NAME);
2278                 kfree(vdev->entries);
2279                 return -ENOMEM;
2280         }
2281
2282         /* Last vector in the list is used for alarm */
2283         alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2284         for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {
2285
2286                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2287
2288                 /* Initialize the fifo vector */
2289                 vdev->entries[j].entry = msix_intr_vect;
2290                 vdev->vxge_entries[j].entry = msix_intr_vect;
2291                 vdev->vxge_entries[j].in_use = 0;
2292                 j++;
2293
2294                 /* Initialize the ring vector */
2295                 vdev->entries[j].entry = msix_intr_vect + 1;
2296                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2297                 vdev->vxge_entries[j].in_use = 0;
2298                 j++;
2299         }
2300
2301         /* Initialize the alarm vector */
2302         vdev->entries[j].entry = alarm_msix_id;
2303         vdev->vxge_entries[j].entry = alarm_msix_id;
2304         vdev->vxge_entries[j].in_use = 0;
2305
2306         ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2307         /* if driver request exceeeds available irq's, request with a small
2308          * number.
2309         */
2310         if (ret > 0) {
2311                 vxge_debug_init(VXGE_ERR,
2312                         "%s: MSI-X enable failed for %d vectors, available: %d",
2313                         VXGE_DRIVER_NAME, intr_cnt, ret);
2314                 vdev->max_vpath_supported = vdev->no_of_vpath;
2315                 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2316
2317                 /* Reset the alarm vector setting */
2318                 vdev->entries[j].entry = 0;
2319                 vdev->vxge_entries[j].entry = 0;
2320
2321                 /* Initialize the alarm vector with new setting */
2322                 vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
2323                 vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
2324                 vdev->vxge_entries[intr_cnt - 1].in_use = 0;
2325
2326                 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2327                 if (!ret)
2328                         vxge_debug_init(VXGE_ERR,
2329                                 "%s: MSI-X enabled for %d vectors",
2330                                 VXGE_DRIVER_NAME, intr_cnt);
2331         }
2332
2333         if (ret) {
2334                 vxge_debug_init(VXGE_ERR,
2335                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2336                         VXGE_DRIVER_NAME, intr_cnt, ret);
2337                 kfree(vdev->entries);
2338                 kfree(vdev->vxge_entries);
2339                 vdev->entries = NULL;
2340                 vdev->vxge_entries = NULL;
2341                 return -ENODEV;
2342         }
2343         return 0;
2344 }
2345
2346 static int vxge_enable_msix(struct vxgedev *vdev)
2347 {
2348
2349         int i, ret = 0;
2350         enum vxge_hw_status status;
2351         /* 0 - Tx, 1 - Rx  */
2352         int tim_msix_id[4];
2353         int alarm_msix_id = 0, msix_intr_vect = 0;;
2354         vdev->intr_cnt = 0;
2355
2356         /* allocate msix vectors */
2357         ret = vxge_alloc_msix(vdev);
2358         if (!ret) {
2359                 /* Last vector in the list is used for alarm */
2360                 alarm_msix_id =
2361                         VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2362                 for (i = 0; i < vdev->no_of_vpath; i++) {
2363
2364                         /* If fifo or ring are not enabled
2365                            the MSIX vector for that should be set to 0
2366                            Hence initializeing this array to all 0s.
2367                         */
2368                         memset(tim_msix_id, 0, sizeof(tim_msix_id));
2369                         msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2370                         tim_msix_id[0] = msix_intr_vect;
2371
2372                         tim_msix_id[1] = msix_intr_vect + 1;
2373                         vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];
2374
2375                         status = vxge_hw_vpath_msix_set(
2376                                                 vdev->vpaths[i].handle,
2377                                                 tim_msix_id, alarm_msix_id);
2378                         if (status != VXGE_HW_OK) {
2379                                 vxge_debug_init(VXGE_ERR,
2380                                         "vxge_hw_vpath_msix_set "
2381                                         "failed with status : %x", status);
2382                                 kfree(vdev->entries);
2383                                 kfree(vdev->vxge_entries);
2384                                 pci_disable_msix(vdev->pdev);
2385                                 return -ENODEV;
2386                         }
2387                 }
2388         }
2389
2390         return ret;
2391 }
2392
2393 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2394 {
2395         int intr_cnt;
2396
2397         for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
2398                 intr_cnt++) {
2399                 if (vdev->vxge_entries[intr_cnt].in_use) {
2400                         synchronize_irq(vdev->entries[intr_cnt].vector);
2401                         free_irq(vdev->entries[intr_cnt].vector,
2402                                 vdev->vxge_entries[intr_cnt].arg);
2403                         vdev->vxge_entries[intr_cnt].in_use = 0;
2404                 }
2405         }
2406
2407         kfree(vdev->entries);
2408         kfree(vdev->vxge_entries);
2409         vdev->entries = NULL;
2410         vdev->vxge_entries = NULL;
2411
2412         if (vdev->config.intr_type == MSI_X)
2413                 pci_disable_msix(vdev->pdev);
2414 }
2415 #endif
2416
2417 static void vxge_rem_isr(struct vxgedev *vdev)
2418 {
2419         struct __vxge_hw_device  *hldev;
2420         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2421
2422 #ifdef CONFIG_PCI_MSI
2423         if (vdev->config.intr_type == MSI_X) {
2424                 vxge_rem_msix_isr(vdev);
2425         } else
2426 #endif
2427         if (vdev->config.intr_type == INTA) {
2428                         synchronize_irq(vdev->pdev->irq);
2429                         free_irq(vdev->pdev->irq, vdev);
2430         }
2431 }
2432
2433 static int vxge_add_isr(struct vxgedev *vdev)
2434 {
2435         int ret = 0;
2436 #ifdef CONFIG_PCI_MSI
2437         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2438         u64 function_mode = vdev->config.device_hw_info.function_mode;
2439         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2440
2441         if (vdev->config.intr_type == MSI_X)
2442                 ret = vxge_enable_msix(vdev);
2443
2444         if (ret) {
2445                 vxge_debug_init(VXGE_ERR,
2446                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2447                 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2448                         test_and_set_bit(__VXGE_STATE_CARD_UP,
2449                                 &driver_config->inta_dev_open))
2450                         return VXGE_HW_FAIL;
2451                 else {
2452                         vxge_debug_init(VXGE_ERR,
2453                                 "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2454                         vdev->config.intr_type = INTA;
2455                         vxge_hw_device_set_intr_type(vdev->devh,
2456                                 VXGE_HW_INTR_MODE_IRQLINE);
2457                         vxge_close_vpaths(vdev, 1);
2458                         vdev->no_of_vpath = 1;
2459                         vdev->stats.vpaths_open = 1;
2460                 }
2461         }
2462
2463         if (vdev->config.intr_type == MSI_X) {
2464                 for (intr_idx = 0;
2465                      intr_idx < (vdev->no_of_vpath *
2466                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2467
2468                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2469                         irq_req = 0;
2470
2471                         switch (msix_idx) {
2472                         case 0:
2473                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2474                                         "%s:vxge fn: %d vpath: %d Tx 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_tx_msix_handle, 0,
2480                                         vdev->desc[intr_cnt],
2481                                         &vdev->vpaths[vp_idx].fifo);
2482                                         vdev->vxge_entries[intr_cnt].arg =
2483                                                 &vdev->vpaths[vp_idx].fifo;
2484                                 irq_req = 1;
2485                                 break;
2486                         case 1:
2487                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2488                                         "%s:vxge fn: %d vpath: %d Rx MSI-X: %d",
2489                                         vdev->ndev->name, pci_fun, vp_idx,
2490                                         vdev->entries[intr_cnt].entry);
2491                                 ret = request_irq(
2492                                     vdev->entries[intr_cnt].vector,
2493                                         vxge_rx_msix_napi_handle,
2494                                         0,
2495                                         vdev->desc[intr_cnt],
2496                                         &vdev->vpaths[vp_idx].ring);
2497                                         vdev->vxge_entries[intr_cnt].arg =
2498                                                 &vdev->vpaths[vp_idx].ring;
2499                                 irq_req = 1;
2500                                 break;
2501                         }
2502
2503                         if (ret) {
2504                                 vxge_debug_init(VXGE_ERR,
2505                                         "%s: MSIX - %d  Registration failed",
2506                                         vdev->ndev->name, intr_cnt);
2507                                 vxge_rem_msix_isr(vdev);
2508                                 if ((function_mode ==
2509                                         VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2510                                         test_and_set_bit(__VXGE_STATE_CARD_UP,
2511                                                 &driver_config->inta_dev_open))
2512                                         return VXGE_HW_FAIL;
2513                                 else {
2514                                         vxge_hw_device_set_intr_type(
2515                                                 vdev->devh,
2516                                                 VXGE_HW_INTR_MODE_IRQLINE);
2517                                                 vdev->config.intr_type = INTA;
2518                                         vxge_debug_init(VXGE_ERR,
2519                                                 "%s: Defaulting to INTA"
2520                                                 , vdev->ndev->name);
2521                                         vxge_close_vpaths(vdev, 1);
2522                                         vdev->no_of_vpath = 1;
2523                                         vdev->stats.vpaths_open = 1;
2524                                         goto INTA_MODE;
2525                                 }
2526                         }
2527
2528                         if (irq_req) {
2529                                 /* We requested for this msix interrupt */
2530                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2531                                 vxge_hw_vpath_msix_unmask(
2532                                         vdev->vpaths[vp_idx].handle,
2533                                         intr_idx);
2534                                 intr_cnt++;
2535                         }
2536
2537                         /* Point to next vpath handler */
2538                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0)
2539                                 && (vp_idx < (vdev->no_of_vpath - 1)))
2540                                         vp_idx++;
2541                 }
2542
2543                 intr_cnt = vdev->max_vpath_supported * 2;
2544                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2545                         "%s:vxge Alarm fn: %d MSI-X: %d",
2546                         vdev->ndev->name, pci_fun,
2547                         vdev->entries[intr_cnt].entry);
2548                 /* For Alarm interrupts */
2549                 ret = request_irq(vdev->entries[intr_cnt].vector,
2550                                         vxge_alarm_msix_handle, 0,
2551                                         vdev->desc[intr_cnt],
2552                                         &vdev->vpaths[vp_idx]);
2553                 if (ret) {
2554                         vxge_debug_init(VXGE_ERR,
2555                                 "%s: MSIX - %d Registration failed",
2556                                 vdev->ndev->name, intr_cnt);
2557                         vxge_rem_msix_isr(vdev);
2558                         if ((function_mode ==
2559                                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2560                                 test_and_set_bit(__VXGE_STATE_CARD_UP,
2561                                                 &driver_config->inta_dev_open))
2562                                 return VXGE_HW_FAIL;
2563                         else {
2564                                 vxge_hw_device_set_intr_type(vdev->devh,
2565                                                 VXGE_HW_INTR_MODE_IRQLINE);
2566                                 vdev->config.intr_type = INTA;
2567                                 vxge_debug_init(VXGE_ERR,
2568                                         "%s: Defaulting to INTA",
2569                                         vdev->ndev->name);
2570                                 vxge_close_vpaths(vdev, 1);
2571                                 vdev->no_of_vpath = 1;
2572                                 vdev->stats.vpaths_open = 1;
2573                                 goto INTA_MODE;
2574                         }
2575                 }
2576
2577                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2578                                         intr_idx - 2);
2579                 vdev->vxge_entries[intr_cnt].in_use = 1;
2580                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[vp_idx];
2581         }
2582 INTA_MODE:
2583 #endif
2584         snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);
2585
2586         if (vdev->config.intr_type == INTA) {
2587                 ret = request_irq((int) vdev->pdev->irq,
2588                         vxge_isr_napi,
2589                         IRQF_SHARED, vdev->desc[0], vdev);
2590                 if (ret) {
2591                         vxge_debug_init(VXGE_ERR,
2592                                 "%s %s-%d: ISR registration failed",
2593                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2594                         return -ENODEV;
2595                 }
2596                 vxge_debug_init(VXGE_TRACE,
2597                         "new %s-%d line allocated",
2598                         "IRQ", vdev->pdev->irq);
2599         }
2600
2601         return VXGE_HW_OK;
2602 }
2603
2604 static void vxge_poll_vp_reset(unsigned long data)
2605 {
2606         struct vxgedev *vdev = (struct vxgedev *)data;
2607         int i, j = 0;
2608
2609         for (i = 0; i < vdev->no_of_vpath; i++) {
2610                 if (test_bit(i, &vdev->vp_reset)) {
2611                         vxge_reset_vpath(vdev, i);
2612                         j++;
2613                 }
2614         }
2615         if (j && (vdev->config.intr_type != MSI_X)) {
2616                 vxge_hw_device_unmask_all(vdev->devh);
2617                 vxge_hw_device_flush_io(vdev->devh);
2618         }
2619
2620         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2621 }
2622
2623 static void vxge_poll_vp_lockup(unsigned long data)
2624 {
2625         struct vxgedev *vdev = (struct vxgedev *)data;
2626         int i;
2627         struct vxge_ring *ring;
2628         enum vxge_hw_status status = VXGE_HW_OK;
2629
2630         for (i = 0; i < vdev->no_of_vpath; i++) {
2631                 ring = &vdev->vpaths[i].ring;
2632                 /* Did this vpath received any packets */
2633                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2634                         status = vxge_hw_vpath_check_leak(ring->handle);
2635
2636                         /* Did it received any packets last time */
2637                         if ((VXGE_HW_FAIL == status) &&
2638                                 (VXGE_HW_FAIL == ring->last_status)) {
2639
2640                                 /* schedule vpath reset */
2641                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2642
2643                                         /* disable interrupts for this vpath */
2644                                         vxge_vpath_intr_disable(vdev, i);
2645
2646                                         /* stop the queue for this vpath */
2647                                         vxge_stop_tx_queue(&vdev->vpaths[i].
2648                                                                 fifo);
2649                                         continue;
2650                                 }
2651                         }
2652                 }
2653                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2654                 ring->last_status = status;
2655         }
2656
2657         /* Check every 1 milli second */
2658         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2659 }
2660
2661 /**
2662  * vxge_open
2663  * @dev: pointer to the device structure.
2664  *
2665  * This function is the open entry point of the driver. It mainly calls a
2666  * function to allocate Rx buffers and inserts them into the buffer
2667  * descriptors and then enables the Rx part of the NIC.
2668  * Return value: '0' on success and an appropriate (-)ve integer as
2669  * defined in errno.h file on failure.
2670  */
2671 int
2672 vxge_open(struct net_device *dev)
2673 {
2674         enum vxge_hw_status status;
2675         struct vxgedev *vdev;
2676         struct __vxge_hw_device *hldev;
2677         int ret = 0;
2678         int i;
2679         u64 val64, function_mode;
2680         vxge_debug_entryexit(VXGE_TRACE,
2681                 "%s: %s:%d", dev->name, __func__, __LINE__);
2682
2683         vdev = (struct vxgedev *)netdev_priv(dev);
2684         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2685         function_mode = vdev->config.device_hw_info.function_mode;
2686
2687         /* make sure you have link off by default every time Nic is
2688          * initialized */
2689         netif_carrier_off(dev);
2690
2691         /* Check for another device already opn with INTA */
2692         if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2693                 test_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open)) {
2694                 ret = -EPERM;
2695                 goto out0;
2696         }
2697
2698         /* Open VPATHs */
2699         status = vxge_open_vpaths(vdev);
2700         if (status != VXGE_HW_OK) {
2701                 vxge_debug_init(VXGE_ERR,
2702                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2703                 ret = -EPERM;
2704                 goto out0;
2705         }
2706
2707         vdev->mtu = dev->mtu;
2708
2709         status = vxge_add_isr(vdev);
2710         if (status != VXGE_HW_OK) {
2711                 vxge_debug_init(VXGE_ERR,
2712                         "%s: fatal: ISR add failed", dev->name);
2713                 ret = -EPERM;
2714                 goto out1;
2715         }
2716
2717
2718         if (vdev->config.intr_type != MSI_X) {
2719                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2720                         vdev->config.napi_weight);
2721                 napi_enable(&vdev->napi);
2722                 for (i = 0; i < vdev->no_of_vpath; i++)
2723                         vdev->vpaths[i].ring.napi_p = &vdev->napi;
2724         } else {
2725                 for (i = 0; i < vdev->no_of_vpath; i++) {
2726                         netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2727                             vxge_poll_msix, vdev->config.napi_weight);
2728                         napi_enable(&vdev->vpaths[i].ring.napi);
2729                         vdev->vpaths[i].ring.napi_p =
2730                                 &vdev->vpaths[i].ring.napi;
2731                 }
2732         }
2733
2734         /* configure RTH */
2735         if (vdev->config.rth_steering) {
2736                 status = vxge_rth_configure(vdev);
2737                 if (status != VXGE_HW_OK) {
2738                         vxge_debug_init(VXGE_ERR,
2739                                 "%s: fatal: RTH configuration failed",
2740                                 dev->name);
2741                         ret = -EPERM;
2742                         goto out2;
2743                 }
2744         }
2745
2746         for (i = 0; i < vdev->no_of_vpath; i++) {
2747                 /* set initial mtu before enabling the device */
2748                 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2749                                                 vdev->mtu);
2750                 if (status != VXGE_HW_OK) {
2751                         vxge_debug_init(VXGE_ERR,
2752                                 "%s: fatal: can not set new MTU", dev->name);
2753                         ret = -EPERM;
2754                         goto out2;
2755                 }
2756         }
2757
2758         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2759         vxge_debug_init(vdev->level_trace,
2760                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2761         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2762
2763         /* Reprogram the DA table with populated mac addresses */
2764         for (i = 0; i < vdev->no_of_vpath; i++) {
2765                 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2766                 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2767         }
2768
2769         /* Enable vpath to sniff all unicast/multicast traffic that not
2770          * addressed to them. We allow promiscous mode for PF only
2771          */
2772
2773         val64 = 0;
2774         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2775                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2776
2777         vxge_hw_mgmt_reg_write(vdev->devh,
2778                 vxge_hw_mgmt_reg_type_mrpcim,
2779                 0,
2780                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2781                         rxmac_authorize_all_addr),
2782                 val64);
2783
2784         vxge_hw_mgmt_reg_write(vdev->devh,
2785                 vxge_hw_mgmt_reg_type_mrpcim,
2786                 0,
2787                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2788                         rxmac_authorize_all_vid),
2789                 val64);
2790
2791         vxge_set_multicast(dev);
2792
2793         /* Enabling Bcast and mcast for all vpath */
2794         for (i = 0; i < vdev->no_of_vpath; i++) {
2795                 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2796                 if (status != VXGE_HW_OK)
2797                         vxge_debug_init(VXGE_ERR,
2798                                 "%s : Can not enable bcast for vpath "
2799                                 "id %d", dev->name, i);
2800                 if (vdev->config.addr_learn_en) {
2801                         status =
2802                             vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2803                         if (status != VXGE_HW_OK)
2804                                 vxge_debug_init(VXGE_ERR,
2805                                         "%s : Can not enable mcast for vpath "
2806                                         "id %d", dev->name, i);
2807                 }
2808         }
2809
2810         vxge_hw_device_setpause_data(vdev->devh, 0,
2811                 vdev->config.tx_pause_enable,
2812                 vdev->config.rx_pause_enable);
2813
2814         if (vdev->vp_reset_timer.function == NULL)
2815                 vxge_os_timer(vdev->vp_reset_timer,
2816                         vxge_poll_vp_reset, vdev, (HZ/2));
2817
2818         if (vdev->vp_lockup_timer.function == NULL)
2819                 vxge_os_timer(vdev->vp_lockup_timer,
2820                         vxge_poll_vp_lockup, vdev, (HZ/2));
2821
2822         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2823
2824         smp_wmb();
2825
2826         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2827                 netif_carrier_on(vdev->ndev);
2828                 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2829                 vdev->stats.link_up++;
2830         }
2831
2832         vxge_hw_device_intr_enable(vdev->devh);
2833
2834         smp_wmb();
2835
2836         for (i = 0; i < vdev->no_of_vpath; i++) {
2837                 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2838                 smp_wmb();
2839                 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2840         }
2841
2842         vxge_start_all_tx_queue(vdev);
2843         goto out0;
2844
2845 out2:
2846         vxge_rem_isr(vdev);
2847
2848         /* Disable napi */
2849         if (vdev->config.intr_type != MSI_X)
2850                 napi_disable(&vdev->napi);
2851         else {
2852                 for (i = 0; i < vdev->no_of_vpath; i++)
2853                         napi_disable(&vdev->vpaths[i].ring.napi);
2854         }
2855
2856 out1:
2857         vxge_close_vpaths(vdev, 0);
2858 out0:
2859         vxge_debug_entryexit(VXGE_TRACE,
2860                                 "%s: %s:%d  Exiting...",
2861                                 dev->name, __func__, __LINE__);
2862         return ret;
2863 }
2864
2865 /* Loop throught the mac address list and delete all the entries */
2866 void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2867 {
2868
2869         struct list_head *entry, *next;
2870         if (list_empty(&vpath->mac_addr_list))
2871                 return;
2872
2873         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2874                 list_del(entry);
2875                 kfree((struct vxge_mac_addrs *)entry);
2876         }
2877 }
2878
2879 static void vxge_napi_del_all(struct vxgedev *vdev)
2880 {
2881         int i;
2882         if (vdev->config.intr_type != MSI_X)
2883                 netif_napi_del(&vdev->napi);
2884         else {
2885                 for (i = 0; i < vdev->no_of_vpath; i++)
2886                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2887         }
2888         return;
2889 }
2890
2891 int do_vxge_close(struct net_device *dev, int do_io)
2892 {
2893         enum vxge_hw_status status;
2894         struct vxgedev *vdev;
2895         struct __vxge_hw_device *hldev;
2896         int i;
2897         u64 val64, vpath_vector;
2898         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2899                 dev->name, __func__, __LINE__);
2900
2901         vdev = (struct vxgedev *)netdev_priv(dev);
2902         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2903
2904         if (unlikely(!is_vxge_card_up(vdev)))
2905                 return 0;
2906
2907         /* If vxge_handle_crit_err task is executing,
2908          * wait till it completes. */
2909         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2910                 msleep(50);
2911
2912         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2913         if (do_io) {
2914                 /* Put the vpath back in normal mode */
2915                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2916                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2917                                 vxge_hw_mgmt_reg_type_mrpcim,
2918                                 0,
2919                                 (ulong)offsetof(
2920                                         struct vxge_hw_mrpcim_reg,
2921                                         rts_mgr_cbasin_cfg),
2922                                 &val64);
2923
2924                 if (status == VXGE_HW_OK) {
2925                         val64 &= ~vpath_vector;
2926                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2927                                         vxge_hw_mgmt_reg_type_mrpcim,
2928                                         0,
2929                                         (ulong)offsetof(
2930                                                 struct vxge_hw_mrpcim_reg,
2931                                                 rts_mgr_cbasin_cfg),
2932                                         val64);
2933                 }
2934
2935                 /* Remove the function 0 from promiscous mode */
2936                 vxge_hw_mgmt_reg_write(vdev->devh,
2937                         vxge_hw_mgmt_reg_type_mrpcim,
2938                         0,
2939                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2940                                 rxmac_authorize_all_addr),
2941                         0);
2942
2943                 vxge_hw_mgmt_reg_write(vdev->devh,
2944                         vxge_hw_mgmt_reg_type_mrpcim,
2945                         0,
2946                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2947                                 rxmac_authorize_all_vid),
2948                         0);
2949
2950                 smp_wmb();
2951         }
2952         del_timer_sync(&vdev->vp_lockup_timer);
2953
2954         del_timer_sync(&vdev->vp_reset_timer);
2955
2956         /* Disable napi */
2957         if (vdev->config.intr_type != MSI_X)
2958                 napi_disable(&vdev->napi);
2959         else {
2960                 for (i = 0; i < vdev->no_of_vpath; i++)
2961                         napi_disable(&vdev->vpaths[i].ring.napi);
2962         }
2963
2964         netif_carrier_off(vdev->ndev);
2965         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2966         vxge_stop_all_tx_queue(vdev);
2967
2968         /* Note that at this point xmit() is stopped by upper layer */
2969         if (do_io)
2970                 vxge_hw_device_intr_disable(vdev->devh);
2971
2972         mdelay(1000);
2973
2974         vxge_rem_isr(vdev);
2975
2976         vxge_napi_del_all(vdev);
2977
2978         if (do_io)
2979                 vxge_reset_all_vpaths(vdev);
2980
2981         vxge_close_vpaths(vdev, 0);
2982
2983         vxge_debug_entryexit(VXGE_TRACE,
2984                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2985
2986         clear_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open);
2987         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2988
2989         return 0;
2990 }
2991
2992 /**
2993  * vxge_close
2994  * @dev: device pointer.
2995  *
2996  * This is the stop entry point of the driver. It needs to undo exactly
2997  * whatever was done by the open entry point, thus it's usually referred to
2998  * as the close function.Among other things this function mainly stops the
2999  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3000  * Return value: '0' on success and an appropriate (-)ve integer as
3001  * defined in errno.h file on failure.
3002  */
3003 int
3004 vxge_close(struct net_device *dev)
3005 {
3006         do_vxge_close(dev, 1);
3007         return 0;
3008 }
3009
3010 /**
3011  * vxge_change_mtu
3012  * @dev: net device pointer.
3013  * @new_mtu :the new MTU size for the device.
3014  *
3015  * A driver entry point to change MTU size for the device. Before changing
3016  * the MTU the device must be stopped.
3017  */
3018 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3019 {
3020         struct vxgedev *vdev = netdev_priv(dev);
3021
3022         vxge_debug_entryexit(vdev->level_trace,
3023                 "%s:%d", __func__, __LINE__);
3024         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3025                 vxge_debug_init(vdev->level_err,
3026                         "%s: mtu size is invalid", dev->name);
3027                 return -EPERM;
3028         }
3029
3030         /* check if device is down already */
3031         if (unlikely(!is_vxge_card_up(vdev))) {
3032                 /* just store new value, will use later on open() */
3033                 dev->mtu = new_mtu;
3034                 vxge_debug_init(vdev->level_err,
3035                         "%s", "device is down on MTU change");
3036                 return 0;
3037         }
3038
3039         vxge_debug_init(vdev->level_trace,
3040                 "trying to apply new MTU %d", new_mtu);
3041
3042         if (vxge_close(dev))
3043                 return -EIO;
3044
3045         dev->mtu = new_mtu;
3046         vdev->mtu = new_mtu;
3047
3048         if (vxge_open(dev))
3049                 return -EIO;
3050
3051         vxge_debug_init(vdev->level_trace,
3052                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3053
3054         vxge_debug_entryexit(vdev->level_trace,
3055                 "%s:%d  Exiting...", __func__, __LINE__);
3056
3057         return 0;
3058 }
3059
3060 /**
3061  * vxge_get_stats
3062  * @dev: pointer to the device structure
3063  *
3064  * Updates the device statistics structure. This function updates the device
3065  * statistics structure in the net_device structure and returns a pointer
3066  * to the same.
3067  */
3068 static struct net_device_stats *
3069 vxge_get_stats(struct net_device *dev)
3070 {
3071         struct vxgedev *vdev;
3072         struct net_device_stats *net_stats;
3073         int k;
3074
3075         vdev = netdev_priv(dev);
3076
3077         net_stats = &vdev->stats.net_stats;
3078
3079         memset(net_stats, 0, sizeof(struct net_device_stats));
3080
3081         for (k = 0; k < vdev->no_of_vpath; k++) {
3082                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3083                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3084                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3085                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3086                 net_stats->rx_dropped +=
3087                         vdev->vpaths[k].ring.stats.rx_dropped;
3088
3089                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3090                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3091                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3092         }
3093
3094         return net_stats;
3095 }
3096
3097 /**
3098  * vxge_ioctl
3099  * @dev: Device pointer.
3100  * @ifr: An IOCTL specific structure, that can contain a pointer to
3101  *       a proprietary structure used to pass information to the driver.
3102  * @cmd: This is used to distinguish between the different commands that
3103  *       can be passed to the IOCTL functions.
3104  *
3105  * Entry point for the Ioctl.
3106  */
3107 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3108 {
3109         return -EOPNOTSUPP;
3110 }
3111
3112 /**
3113  * vxge_tx_watchdog
3114  * @dev: pointer to net device structure
3115  *
3116  * Watchdog for transmit side.
3117  * This function is triggered if the Tx Queue is stopped
3118  * for a pre-defined amount of time when the Interface is still up.
3119  */
3120 static void
3121 vxge_tx_watchdog(struct net_device *dev)
3122 {
3123         struct vxgedev *vdev;
3124
3125         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3126
3127         vdev = (struct vxgedev *)netdev_priv(dev);
3128
3129         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3130
3131         vxge_reset(vdev);
3132         vxge_debug_entryexit(VXGE_TRACE,
3133                 "%s:%d  Exiting...", __func__, __LINE__);
3134 }
3135
3136 /**
3137  * vxge_vlan_rx_register
3138  * @dev: net device pointer.
3139  * @grp: vlan group
3140  *
3141  * Vlan group registration
3142  */
3143 static void
3144 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3145 {
3146         struct vxgedev *vdev;
3147         struct vxge_vpath *vpath;
3148         int vp;
3149         u64 vid;
3150         enum vxge_hw_status status;
3151         int i;
3152
3153         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3154
3155         vdev = (struct vxgedev *)netdev_priv(dev);
3156
3157         vpath = &vdev->vpaths[0];
3158         if ((NULL == grp) && (vpath->is_open)) {
3159                 /* Get the first vlan */
3160                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3161
3162                 while (status == VXGE_HW_OK) {
3163
3164                         /* Delete this vlan from the vid table */
3165                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3166                                 vpath = &vdev->vpaths[vp];
3167                                 if (!vpath->is_open)
3168                                         continue;
3169
3170                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3171                         }
3172
3173                         /* Get the next vlan to be deleted */
3174                         vpath = &vdev->vpaths[0];
3175                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3176                 }
3177         }
3178
3179         vdev->vlgrp = grp;
3180
3181         for (i = 0; i < vdev->no_of_vpath; i++) {
3182                 if (vdev->vpaths[i].is_configured)
3183                         vdev->vpaths[i].ring.vlgrp = grp;
3184         }
3185
3186         vxge_debug_entryexit(VXGE_TRACE,
3187                 "%s:%d  Exiting...", __func__, __LINE__);
3188 }
3189
3190 /**
3191  * vxge_vlan_rx_add_vid
3192  * @dev: net device pointer.
3193  * @vid: vid
3194  *
3195  * Add the vlan id to the devices vlan id table
3196  */
3197 static void
3198 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3199 {
3200         struct vxgedev *vdev;
3201         struct vxge_vpath *vpath;
3202         int vp_id;
3203
3204         vdev = (struct vxgedev *)netdev_priv(dev);
3205
3206         /* Add these vlan to the vid table */
3207         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3208                 vpath = &vdev->vpaths[vp_id];
3209                 if (!vpath->is_open)
3210                         continue;
3211                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3212         }
3213 }
3214
3215 /**
3216  * vxge_vlan_rx_add_vid
3217  * @dev: net device pointer.
3218  * @vid: vid
3219  *
3220  * Remove the vlan id from the device's vlan id table
3221  */
3222 static void
3223 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3224 {
3225         struct vxgedev *vdev;
3226         struct vxge_vpath *vpath;
3227         int vp_id;
3228
3229         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3230
3231         vdev = (struct vxgedev *)netdev_priv(dev);
3232
3233         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3234
3235         /* Delete this vlan from the vid table */
3236         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3237                 vpath = &vdev->vpaths[vp_id];
3238                 if (!vpath->is_open)
3239                         continue;
3240                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3241         }
3242         vxge_debug_entryexit(VXGE_TRACE,
3243                 "%s:%d  Exiting...", __func__, __LINE__);
3244 }
3245
3246 static const struct net_device_ops vxge_netdev_ops = {
3247         .ndo_open               = vxge_open,
3248         .ndo_stop               = vxge_close,
3249         .ndo_get_stats          = vxge_get_stats,
3250         .ndo_start_xmit         = vxge_xmit,
3251         .ndo_validate_addr      = eth_validate_addr,
3252         .ndo_set_multicast_list = vxge_set_multicast,
3253
3254         .ndo_do_ioctl           = vxge_ioctl,
3255
3256         .ndo_set_mac_address    = vxge_set_mac_addr,
3257         .ndo_change_mtu         = vxge_change_mtu,
3258         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3259         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3260         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3261
3262         .ndo_tx_timeout         = vxge_tx_watchdog,
3263 #ifdef CONFIG_NET_POLL_CONTROLLER
3264         .ndo_poll_controller    = vxge_netpoll,
3265 #endif
3266 };
3267
3268 int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3269                                    struct vxge_config *config,
3270                                    int high_dma, int no_of_vpath,
3271                                    struct vxgedev **vdev_out)
3272 {
3273         struct net_device *ndev;
3274         enum vxge_hw_status status = VXGE_HW_OK;
3275         struct vxgedev *vdev;
3276         int i, ret = 0, no_of_queue = 1;
3277         u64 stat;
3278
3279         *vdev_out = NULL;
3280         if (config->tx_steering_type == TX_MULTIQ_STEERING)
3281                 no_of_queue = no_of_vpath;
3282
3283         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3284                         no_of_queue);
3285         if (ndev == NULL) {
3286                 vxge_debug_init(
3287                         vxge_hw_device_trace_level_get(hldev),
3288                 "%s : device allocation failed", __func__);
3289                 ret = -ENODEV;
3290                 goto _out0;
3291         }
3292
3293         vxge_debug_entryexit(
3294                 vxge_hw_device_trace_level_get(hldev),
3295                 "%s: %s:%d  Entering...",
3296                 ndev->name, __func__, __LINE__);
3297
3298         vdev = netdev_priv(ndev);
3299         memset(vdev, 0, sizeof(struct vxgedev));
3300
3301         vdev->ndev = ndev;
3302         vdev->devh = hldev;
3303         vdev->pdev = hldev->pdev;
3304         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3305         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3306
3307         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3308
3309         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3310                                 NETIF_F_HW_VLAN_FILTER;
3311         /*  Driver entry points */
3312         ndev->irq = vdev->pdev->irq;
3313         ndev->base_addr = (unsigned long) hldev->bar0;
3314
3315         ndev->netdev_ops = &vxge_netdev_ops;
3316
3317         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3318
3319         initialize_ethtool_ops(ndev);
3320
3321         /* Allocate memory for vpath */
3322         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3323                                 no_of_vpath, GFP_KERNEL);
3324         if (!vdev->vpaths) {
3325                 vxge_debug_init(VXGE_ERR,
3326                         "%s: vpath memory allocation failed",
3327                         vdev->ndev->name);
3328                 ret = -ENODEV;
3329                 goto _out1;
3330         }
3331
3332         ndev->features |= NETIF_F_SG;
3333
3334         ndev->features |= NETIF_F_HW_CSUM;
3335         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3336                 "%s : checksuming enabled", __func__);
3337
3338         if (high_dma) {
3339                 ndev->features |= NETIF_F_HIGHDMA;
3340                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3341                         "%s : using High DMA", __func__);
3342         }
3343
3344         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3345
3346         if (vdev->config.gro_enable)
3347                 ndev->features |= NETIF_F_GRO;
3348
3349         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3350                 ndev->real_num_tx_queues = no_of_vpath;
3351
3352 #ifdef NETIF_F_LLTX
3353         ndev->features |= NETIF_F_LLTX;
3354 #endif
3355
3356         for (i = 0; i < no_of_vpath; i++)
3357                 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3358
3359         if (register_netdev(ndev)) {
3360                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3361                         "%s: %s : device registration failed!",
3362                         ndev->name, __func__);
3363                 ret = -ENODEV;
3364                 goto _out2;
3365         }
3366
3367         /*  Set the factory defined MAC address initially */
3368         ndev->addr_len = ETH_ALEN;
3369
3370         /* Make Link state as off at this point, when the Link change
3371          * interrupt comes the state will be automatically changed to
3372          * the right state.
3373          */
3374         netif_carrier_off(ndev);
3375
3376         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3377                 "%s: Ethernet device registered",
3378                 ndev->name);
3379
3380         *vdev_out = vdev;
3381
3382         /* Resetting the Device stats */
3383         status = vxge_hw_mrpcim_stats_access(
3384                                 hldev,
3385                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3386                                 0,
3387                                 0,
3388                                 &stat);
3389
3390         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3391                 vxge_debug_init(
3392                         vxge_hw_device_trace_level_get(hldev),
3393                         "%s: device stats clear returns"
3394                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3395
3396         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3397                 "%s: %s:%d  Exiting...",
3398                 ndev->name, __func__, __LINE__);
3399
3400         return ret;
3401 _out2:
3402         kfree(vdev->vpaths);
3403 _out1:
3404         free_netdev(ndev);
3405 _out0:
3406         return ret;
3407 }
3408
3409 /*
3410  * vxge_device_unregister
3411  *
3412  * This function will unregister and free network device
3413  */
3414 void
3415 vxge_device_unregister(struct __vxge_hw_device *hldev)
3416 {
3417         struct vxgedev *vdev;
3418         struct net_device *dev;
3419         char buf[IFNAMSIZ];
3420 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3421         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3422         u32 level_trace;
3423 #endif
3424
3425         dev = hldev->ndev;
3426         vdev = netdev_priv(dev);
3427 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3428         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3429         level_trace = vdev->level_trace;
3430 #endif
3431         vxge_debug_entryexit(level_trace,
3432                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3433
3434         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3435
3436         /* in 2.6 will call stop() if device is up */
3437         unregister_netdev(dev);
3438
3439         flush_scheduled_work();
3440
3441         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3442         vxge_debug_entryexit(level_trace,
3443                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3444 }
3445
3446 /*
3447  * vxge_callback_crit_err
3448  *
3449  * This function is called by the alarm handler in interrupt context.
3450  * Driver must analyze it based on the event type.
3451  */
3452 static void
3453 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3454                         enum vxge_hw_event type, u64 vp_id)
3455 {
3456         struct net_device *dev = hldev->ndev;
3457         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3458         int vpath_idx;
3459
3460         vxge_debug_entryexit(vdev->level_trace,
3461                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3462
3463         /* Note: This event type should be used for device wide
3464          * indications only - Serious errors, Slot freeze and critical errors
3465          */
3466         vdev->cric_err_event = type;
3467
3468         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3469                 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3470                         break;
3471
3472         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3473                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3474                         vxge_debug_init(VXGE_ERR,
3475                                 "%s: Slot is frozen", vdev->ndev->name);
3476                 } else if (type == VXGE_HW_EVENT_SERR) {
3477                         vxge_debug_init(VXGE_ERR,
3478                                 "%s: Encountered Serious Error",
3479                                 vdev->ndev->name);
3480                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3481                         vxge_debug_init(VXGE_ERR,
3482                                 "%s: Encountered Critical Error",
3483                                 vdev->ndev->name);
3484         }
3485
3486         if ((type == VXGE_HW_EVENT_SERR) ||
3487                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3488                 if (unlikely(vdev->exec_mode))
3489                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3490         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3491                 vxge_hw_device_mask_all(hldev);
3492                 if (unlikely(vdev->exec_mode))
3493                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3494         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3495                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3496
3497                 if (unlikely(vdev->exec_mode))
3498                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3499                 else {
3500                         /* check if this vpath is already set for reset */
3501                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3502
3503                                 /* disable interrupts for this vpath */
3504                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3505
3506                                 /* stop the queue for this vpath */
3507                                 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3508                                                         fifo);
3509                         }
3510                 }
3511         }
3512
3513         vxge_debug_entryexit(vdev->level_trace,
3514                 "%s: %s:%d  Exiting...",
3515                 vdev->ndev->name, __func__, __LINE__);
3516 }
3517
3518 static void verify_bandwidth(void)
3519 {
3520         int i, band_width, total = 0, equal_priority = 0;
3521
3522         /* 1. If user enters 0 for some fifo, give equal priority to all */
3523         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3524                 if (bw_percentage[i] == 0) {
3525                         equal_priority = 1;
3526                         break;
3527                 }
3528         }
3529
3530         if (!equal_priority) {
3531                 /* 2. If sum exceeds 100, give equal priority to all */
3532                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3533                         if (bw_percentage[i] == 0xFF)
3534                                 break;
3535
3536                         total += bw_percentage[i];
3537                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3538                                 equal_priority = 1;
3539                                 break;
3540                         }
3541                 }
3542         }
3543
3544         if (!equal_priority) {
3545                 /* Is all the bandwidth consumed? */
3546                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3547                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3548                                 /* Split rest of bw equally among next VPs*/
3549                                 band_width =
3550                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3551                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3552                                 if (band_width < 2) /* min of 2% */
3553                                         equal_priority = 1;
3554                                 else {
3555                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3556                                                 i++)
3557                                                 bw_percentage[i] =
3558                                                         band_width;
3559                                 }
3560                         }
3561                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3562                         equal_priority = 1;
3563         }
3564
3565         if (equal_priority) {
3566                 vxge_debug_init(VXGE_ERR,
3567                         "%s: Assigning equal bandwidth to all the vpaths",
3568                         VXGE_DRIVER_NAME);
3569                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3570                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3571                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3572                         bw_percentage[i] = bw_percentage[0];
3573         }
3574
3575         return;
3576 }
3577
3578 /*
3579  * Vpath configuration
3580  */
3581 static int __devinit vxge_config_vpaths(
3582                         struct vxge_hw_device_config *device_config,
3583                         u64 vpath_mask, struct vxge_config *config_param)
3584 {
3585         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3586         u32 txdl_size, txdl_per_memblock;
3587
3588         temp = driver_config->vpath_per_dev;
3589         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3590                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3591                 /* No more CPU. Return vpath number as zero.*/
3592                 if (driver_config->g_no_cpus == -1)
3593                         return 0;
3594
3595                 if (!driver_config->g_no_cpus)
3596                         driver_config->g_no_cpus = num_online_cpus();
3597
3598                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3599                 if (!driver_config->vpath_per_dev)
3600                         driver_config->vpath_per_dev = 1;
3601
3602                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3603                         if (!vxge_bVALn(vpath_mask, i, 1))
3604                                 continue;
3605                         else
3606                                 default_no_vpath++;
3607                 if (default_no_vpath < driver_config->vpath_per_dev)
3608                         driver_config->vpath_per_dev = default_no_vpath;
3609
3610                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3611                                 (driver_config->vpath_per_dev * 2);
3612                 if (driver_config->g_no_cpus <= 0)
3613                         driver_config->g_no_cpus = -1;
3614         }
3615
3616         if (driver_config->vpath_per_dev == 1) {
3617                 vxge_debug_ll_config(VXGE_TRACE,
3618                         "%s: Disable tx and rx steering, "
3619                         "as single vpath is configured", VXGE_DRIVER_NAME);
3620                 config_param->rth_steering = NO_STEERING;
3621                 config_param->tx_steering_type = NO_STEERING;
3622                 device_config->rth_en = 0;
3623         }
3624
3625         /* configure bandwidth */
3626         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3627                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3628
3629         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3630                 device_config->vp_config[i].vp_id = i;
3631                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3632                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3633                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3634                                 vxge_debug_ll_config(VXGE_TRACE,
3635                                         "%s: vpath: %d is not available",
3636                                         VXGE_DRIVER_NAME, i);
3637                                 continue;
3638                         } else {
3639                                 vxge_debug_ll_config(VXGE_TRACE,
3640                                         "%s: vpath: %d available",
3641                                         VXGE_DRIVER_NAME, i);
3642                                 no_of_vpaths++;
3643                         }
3644                 } else {
3645                         vxge_debug_ll_config(VXGE_TRACE,
3646                                 "%s: vpath: %d is not configured, "
3647                                 "max_config_vpath exceeded",
3648                                 VXGE_DRIVER_NAME, i);
3649                         break;
3650                 }
3651
3652                 /* Configure Tx fifo's */
3653                 device_config->vp_config[i].fifo.enable =
3654                                                 VXGE_HW_FIFO_ENABLE;
3655                 device_config->vp_config[i].fifo.max_frags =
3656                                 MAX_SKB_FRAGS;
3657                 device_config->vp_config[i].fifo.memblock_size =
3658                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3659
3660                 txdl_size = MAX_SKB_FRAGS * sizeof(struct vxge_hw_fifo_txd);
3661                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3662
3663                 device_config->vp_config[i].fifo.fifo_blocks =
3664                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3665
3666                 device_config->vp_config[i].fifo.intr =
3667                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3668
3669                 /* Configure tti properties */
3670                 device_config->vp_config[i].tti.intr_enable =
3671                                         VXGE_HW_TIM_INTR_ENABLE;
3672
3673                 device_config->vp_config[i].tti.btimer_val =
3674                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3675
3676                 device_config->vp_config[i].tti.timer_ac_en =
3677                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3678
3679                 /* For msi-x with napi (each vector
3680                 has a handler of its own) -
3681                 Set CI to OFF for all vpaths */
3682                 device_config->vp_config[i].tti.timer_ci_en =
3683                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3684
3685                 device_config->vp_config[i].tti.timer_ri_en =
3686                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3687
3688                 device_config->vp_config[i].tti.util_sel =
3689                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3690
3691                 device_config->vp_config[i].tti.ltimer_val =
3692                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3693
3694                 device_config->vp_config[i].tti.rtimer_val =
3695                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3696
3697                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3698                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3699                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3700                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3701                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3702                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3703                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3704
3705                 /* Configure Rx rings */
3706                 device_config->vp_config[i].ring.enable  =
3707                                                 VXGE_HW_RING_ENABLE;
3708
3709                 device_config->vp_config[i].ring.ring_blocks  =
3710                                                 VXGE_HW_DEF_RING_BLOCKS;
3711                 device_config->vp_config[i].ring.buffer_mode =
3712                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3713                 device_config->vp_config[i].ring.rxds_limit  =
3714                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3715                 device_config->vp_config[i].ring.scatter_mode =
3716                                         VXGE_HW_RING_SCATTER_MODE_A;
3717
3718                 /* Configure rti properties */
3719                 device_config->vp_config[i].rti.intr_enable =
3720                                         VXGE_HW_TIM_INTR_ENABLE;
3721
3722                 device_config->vp_config[i].rti.btimer_val =
3723                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3724
3725                 device_config->vp_config[i].rti.timer_ac_en =
3726                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3727
3728                 device_config->vp_config[i].rti.timer_ci_en =
3729                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3730
3731                 device_config->vp_config[i].rti.timer_ri_en =
3732                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3733
3734                 device_config->vp_config[i].rti.util_sel =
3735                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3736
3737                 device_config->vp_config[i].rti.urange_a =
3738                                                 RTI_RX_URANGE_A;
3739                 device_config->vp_config[i].rti.urange_b =
3740                                                 RTI_RX_URANGE_B;
3741                 device_config->vp_config[i].rti.urange_c =
3742                                                 RTI_RX_URANGE_C;
3743                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3744                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3745                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3746                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3747
3748                 device_config->vp_config[i].rti.rtimer_val =
3749                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3750
3751                 device_config->vp_config[i].rti.ltimer_val =
3752                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3753
3754                 device_config->vp_config[i].rpa_strip_vlan_tag =
3755                         vlan_tag_strip;
3756         }
3757
3758         driver_config->vpath_per_dev = temp;
3759         return no_of_vpaths;
3760 }
3761
3762 /* initialize device configuratrions */
3763 static void __devinit vxge_device_config_init(
3764                                 struct vxge_hw_device_config *device_config,
3765                                 int *intr_type)
3766 {
3767         /* Used for CQRQ/SRQ. */
3768         device_config->dma_blockpool_initial =
3769                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3770
3771         device_config->dma_blockpool_max =
3772                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3773
3774         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3775                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3776
3777 #ifndef CONFIG_PCI_MSI
3778         vxge_debug_init(VXGE_ERR,
3779                 "%s: This Kernel does not support "
3780                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3781         *intr_type = INTA;
3782 #endif
3783
3784         /* Configure whether MSI-X or IRQL. */
3785         switch (*intr_type) {
3786         case INTA:
3787                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3788                 break;
3789
3790         case MSI_X:
3791                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3792                 break;
3793         }
3794         /* Timer period between device poll */
3795         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3796
3797         /* Configure mac based steering. */
3798         device_config->rts_mac_en = addr_learn_en;
3799
3800         /* Configure Vpaths */
3801         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3802
3803         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3804                         __func__);
3805         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3806                         device_config->dma_blockpool_initial);
3807         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3808                         device_config->dma_blockpool_max);
3809         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3810                         device_config->intr_mode);
3811         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3812                         device_config->device_poll_millis);
3813         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3814                         device_config->rts_mac_en);
3815         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3816                         device_config->rth_en);
3817         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3818                         device_config->rth_it_type);
3819 }
3820
3821 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3822 {
3823         int i;
3824
3825         vxge_debug_init(VXGE_TRACE,
3826                 "%s: %d Vpath(s) opened",
3827                 vdev->ndev->name, vdev->no_of_vpath);
3828
3829         switch (vdev->config.intr_type) {
3830         case INTA:
3831                 vxge_debug_init(VXGE_TRACE,
3832                         "%s: Interrupt type INTA", vdev->ndev->name);
3833                 break;
3834
3835         case MSI_X:
3836                 vxge_debug_init(VXGE_TRACE,
3837                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3838                 break;
3839         }
3840
3841         if (vdev->config.rth_steering) {
3842                 vxge_debug_init(VXGE_TRACE,
3843                         "%s: RTH steering enabled for TCP_IPV4",
3844                         vdev->ndev->name);
3845         } else {
3846                 vxge_debug_init(VXGE_TRACE,
3847                         "%s: RTH steering disabled", vdev->ndev->name);
3848         }
3849
3850         switch (vdev->config.tx_steering_type) {
3851         case NO_STEERING:
3852                 vxge_debug_init(VXGE_TRACE,
3853                         "%s: Tx steering disabled", vdev->ndev->name);
3854                 break;
3855         case TX_PRIORITY_STEERING:
3856                 vxge_debug_init(VXGE_TRACE,
3857                         "%s: Unsupported tx steering option",
3858                         vdev->ndev->name);
3859                 vxge_debug_init(VXGE_TRACE,
3860                         "%s: Tx steering disabled", vdev->ndev->name);
3861                 vdev->config.tx_steering_type = 0;
3862                 break;
3863         case TX_VLAN_STEERING:
3864                 vxge_debug_init(VXGE_TRACE,
3865                         "%s: Unsupported tx steering option",
3866                         vdev->ndev->name);
3867                 vxge_debug_init(VXGE_TRACE,
3868                         "%s: Tx steering disabled", vdev->ndev->name);
3869                 vdev->config.tx_steering_type = 0;
3870                 break;
3871         case TX_MULTIQ_STEERING:
3872                 vxge_debug_init(VXGE_TRACE,
3873                         "%s: Tx multiqueue steering enabled",
3874                         vdev->ndev->name);
3875                 break;
3876         case TX_PORT_STEERING:
3877                 vxge_debug_init(VXGE_TRACE,
3878                         "%s: Tx port steering enabled",
3879                         vdev->ndev->name);
3880                 break;
3881         default:
3882                 vxge_debug_init(VXGE_ERR,
3883                         "%s: Unsupported tx steering type",
3884                         vdev->ndev->name);
3885                 vxge_debug_init(VXGE_TRACE,
3886                         "%s: Tx steering disabled", vdev->ndev->name);
3887                 vdev->config.tx_steering_type = 0;
3888         }
3889
3890         if (vdev->config.gro_enable) {
3891                 vxge_debug_init(VXGE_ERR,
3892                         "%s: Generic receive offload enabled",
3893                         vdev->ndev->name);
3894         } else
3895                 vxge_debug_init(VXGE_TRACE,
3896                         "%s: Generic receive offload disabled",
3897                         vdev->ndev->name);
3898
3899         if (vdev->config.addr_learn_en)
3900                 vxge_debug_init(VXGE_TRACE,
3901                         "%s: MAC Address learning enabled", vdev->ndev->name);
3902
3903         vxge_debug_init(VXGE_TRACE,
3904                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3905
3906         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3907                 if (!vxge_bVALn(vpath_mask, i, 1))
3908                         continue;
3909                 vxge_debug_ll_config(VXGE_TRACE,
3910                         "%s: MTU size - %d", vdev->ndev->name,
3911                         ((struct __vxge_hw_device  *)(vdev->devh))->
3912                                 config.vp_config[i].mtu);
3913                 vxge_debug_init(VXGE_TRACE,
3914                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3915                         ((struct __vxge_hw_device  *)(vdev->devh))->
3916                                 config.vp_config[i].rpa_strip_vlan_tag
3917                         ? "Enabled" : "Disabled");
3918                 vxge_debug_init(VXGE_TRACE,
3919                         "%s: Ring blocks : %d", vdev->ndev->name,
3920                         ((struct __vxge_hw_device  *)(vdev->devh))->
3921                                 config.vp_config[i].ring.ring_blocks);
3922                 vxge_debug_init(VXGE_TRACE,
3923                         "%s: Fifo blocks : %d", vdev->ndev->name,
3924                         ((struct __vxge_hw_device  *)(vdev->devh))->
3925                                 config.vp_config[i].fifo.fifo_blocks);
3926                 vxge_debug_ll_config(VXGE_TRACE,
3927                         "%s: Max frags : %d", vdev->ndev->name,
3928                         ((struct __vxge_hw_device  *)(vdev->devh))->
3929                                 config.vp_config[i].fifo.max_frags);
3930                 break;
3931         }
3932 }
3933
3934 #ifdef CONFIG_PM
3935 /**
3936  * vxge_pm_suspend - vxge power management suspend entry point
3937  *
3938  */
3939 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3940 {
3941         return -ENOSYS;
3942 }
3943 /**
3944  * vxge_pm_resume - vxge power management resume entry point
3945  *
3946  */
3947 static int vxge_pm_resume(struct pci_dev *pdev)
3948 {
3949         return -ENOSYS;
3950 }
3951
3952 #endif
3953
3954 /**
3955  * vxge_io_error_detected - called when PCI error is detected
3956  * @pdev: Pointer to PCI device
3957  * @state: The current pci connection state
3958  *
3959  * This function is called after a PCI bus error affecting
3960  * this device has been detected.
3961  */
3962 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3963                                                 pci_channel_state_t state)
3964 {
3965         struct __vxge_hw_device  *hldev =
3966                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3967         struct net_device *netdev = hldev->ndev;
3968
3969         netif_device_detach(netdev);
3970
3971         if (state == pci_channel_io_perm_failure)
3972                 return PCI_ERS_RESULT_DISCONNECT;
3973
3974         if (netif_running(netdev)) {
3975                 /* Bring down the card, while avoiding PCI I/O */
3976                 do_vxge_close(netdev, 0);
3977         }
3978
3979         pci_disable_device(pdev);
3980
3981         return PCI_ERS_RESULT_NEED_RESET;
3982 }
3983
3984 /**
3985  * vxge_io_slot_reset - called after the pci bus has been reset.
3986  * @pdev: Pointer to PCI device
3987  *
3988  * Restart the card from scratch, as if from a cold-boot.
3989  * At this point, the card has exprienced a hard reset,
3990  * followed by fixups by BIOS, and has its config space
3991  * set up identically to what it was at cold boot.
3992  */
3993 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3994 {
3995         struct __vxge_hw_device  *hldev =
3996                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3997         struct net_device *netdev = hldev->ndev;
3998
3999         struct vxgedev *vdev = netdev_priv(netdev);
4000
4001         if (pci_enable_device(pdev)) {
4002                 printk(KERN_ERR "%s: "
4003                         "Cannot re-enable device after reset\n",
4004                         VXGE_DRIVER_NAME);
4005                 return PCI_ERS_RESULT_DISCONNECT;
4006         }
4007
4008         pci_set_master(pdev);
4009         vxge_reset(vdev);
4010
4011         return PCI_ERS_RESULT_RECOVERED;
4012 }
4013
4014 /**
4015  * vxge_io_resume - called when traffic can start flowing again.
4016  * @pdev: Pointer to PCI device
4017  *
4018  * This callback is called when the error recovery driver tells
4019  * us that its OK to resume normal operation.
4020  */
4021 static void vxge_io_resume(struct pci_dev *pdev)
4022 {
4023         struct __vxge_hw_device  *hldev =
4024                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4025         struct net_device *netdev = hldev->ndev;
4026
4027         if (netif_running(netdev)) {
4028                 if (vxge_open(netdev)) {
4029                         printk(KERN_ERR "%s: "
4030                                 "Can't bring device back up after reset\n",
4031                                 VXGE_DRIVER_NAME);
4032                         return;
4033                 }
4034         }
4035
4036         netif_device_attach(netdev);
4037 }
4038
4039 /**
4040  * vxge_probe
4041  * @pdev : structure containing the PCI related information of the device.
4042  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4043  * Description:
4044  * This function is called when a new PCI device gets detected and initializes
4045  * it.
4046  * Return value:
4047  * returns 0 on success and negative on failure.
4048  *
4049  */
4050 static int __devinit
4051 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4052 {
4053         struct __vxge_hw_device  *hldev;
4054         enum vxge_hw_status status;
4055         int ret;
4056         int high_dma = 0;
4057         u64 vpath_mask = 0;
4058         struct vxgedev *vdev;
4059         struct vxge_config ll_config;
4060         struct vxge_hw_device_config *device_config = NULL;
4061         struct vxge_hw_device_attr attr;
4062         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4063         u8 *macaddr;
4064         struct vxge_mac_addrs *entry;
4065         static int bus = -1, device = -1;
4066         u8 new_device = 0;
4067
4068         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4069         attr.pdev = pdev;
4070
4071         if (bus != pdev->bus->number)
4072                 new_device = 1;
4073         if (device != PCI_SLOT(pdev->devfn))
4074                 new_device = 1;
4075
4076         bus = pdev->bus->number;
4077         device = PCI_SLOT(pdev->devfn);
4078
4079         if (new_device) {
4080                 if (driver_config->config_dev_cnt &&
4081                    (driver_config->config_dev_cnt !=
4082                         driver_config->total_dev_cnt))
4083                         vxge_debug_init(VXGE_ERR,
4084                                 "%s: Configured %d of %d devices",
4085                                 VXGE_DRIVER_NAME,
4086                                 driver_config->config_dev_cnt,
4087                                 driver_config->total_dev_cnt);
4088                 driver_config->config_dev_cnt = 0;
4089                 driver_config->total_dev_cnt = 0;
4090                 driver_config->g_no_cpus = 0;
4091                 driver_config->vpath_per_dev = max_config_vpath;
4092         }
4093
4094         driver_config->total_dev_cnt++;
4095         if (++driver_config->config_dev_cnt > max_config_dev) {
4096                 ret = 0;
4097                 goto _exit0;
4098         }
4099
4100         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4101                 GFP_KERNEL);
4102         if (!device_config) {
4103                 ret = -ENOMEM;
4104                 vxge_debug_init(VXGE_ERR,
4105                         "device_config : malloc failed %s %d",
4106                         __FILE__, __LINE__);
4107                 goto _exit0;
4108         }
4109
4110         memset(&ll_config, 0, sizeof(struct vxge_config));
4111         ll_config.tx_steering_type = TX_MULTIQ_STEERING;
4112         ll_config.intr_type = MSI_X;
4113         ll_config.napi_weight = NEW_NAPI_WEIGHT;
4114         ll_config.rth_steering = RTH_STEERING;
4115
4116         /* get the default configuration parameters */
4117         vxge_hw_device_config_default_get(device_config);
4118
4119         /* initialize configuration parameters */
4120         vxge_device_config_init(device_config, &ll_config.intr_type);
4121
4122         ret = pci_enable_device(pdev);
4123         if (ret) {
4124                 vxge_debug_init(VXGE_ERR,
4125                         "%s : can not enable PCI device", __func__);
4126                 goto _exit0;
4127         }
4128
4129         if (!pci_set_dma_mask(pdev, 0xffffffffffffffffULL)) {
4130                 vxge_debug_ll_config(VXGE_TRACE,
4131                         "%s : using 64bit DMA", __func__);
4132
4133                 high_dma = 1;
4134
4135                 if (pci_set_consistent_dma_mask(pdev,
4136                                                 0xffffffffffffffffULL)) {
4137                         vxge_debug_init(VXGE_ERR,
4138                                 "%s : unable to obtain 64bit DMA for "
4139                                 "consistent allocations", __func__);
4140                         ret = -ENOMEM;
4141                         goto _exit1;
4142                 }
4143         } else if (!pci_set_dma_mask(pdev, 0xffffffffUL)) {
4144                 vxge_debug_ll_config(VXGE_TRACE,
4145                         "%s : using 32bit DMA", __func__);
4146         } else {
4147                 ret = -ENOMEM;
4148                 goto _exit1;
4149         }
4150
4151         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4152                 vxge_debug_init(VXGE_ERR,
4153                         "%s : request regions failed", __func__);
4154                 ret = -ENODEV;
4155                 goto _exit1;
4156         }
4157
4158         pci_set_master(pdev);
4159
4160         attr.bar0 = pci_ioremap_bar(pdev, 0);
4161         if (!attr.bar0) {
4162                 vxge_debug_init(VXGE_ERR,
4163                         "%s : cannot remap io memory bar0", __func__);
4164                 ret = -ENODEV;
4165                 goto _exit2;
4166         }
4167         vxge_debug_ll_config(VXGE_TRACE,
4168                 "pci ioremap bar0: %p:0x%llx",
4169                 attr.bar0,
4170                 (unsigned long long)pci_resource_start(pdev, 0));
4171
4172         status = vxge_hw_device_hw_info_get(attr.bar0,
4173                         &ll_config.device_hw_info);
4174         if (status != VXGE_HW_OK) {
4175                 vxge_debug_init(VXGE_ERR,
4176                         "%s: Reading of hardware info failed."
4177                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4178                 ret = -EINVAL;
4179                 goto _exit3;
4180         }
4181
4182         if (ll_config.device_hw_info.fw_version.major !=
4183                 VXGE_DRIVER_FW_VERSION_MAJOR) {
4184                 vxge_debug_init(VXGE_ERR,
4185                         "%s: Incorrect firmware version."
4186                         "Please upgrade the firmware to version 1.x.x",
4187                         VXGE_DRIVER_NAME);
4188                 ret = -EINVAL;
4189                 goto _exit3;
4190         }
4191
4192         vpath_mask = ll_config.device_hw_info.vpath_mask;
4193         if (vpath_mask == 0) {
4194                 vxge_debug_ll_config(VXGE_TRACE,
4195                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4196                 ret = -EINVAL;
4197                 goto _exit3;
4198         }
4199
4200         vxge_debug_ll_config(VXGE_TRACE,
4201                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4202                 (unsigned long long)vpath_mask);
4203
4204         /* Check how many vpaths are available */
4205         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4206                 if (!((vpath_mask) & vxge_mBIT(i)))
4207                         continue;
4208                 max_vpath_supported++;
4209         }
4210
4211         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4212         if ((VXGE_HW_FUNCTION_MODE_SRIOV ==
4213                 ll_config.device_hw_info.function_mode) &&
4214                 (max_config_dev > 1) && (pdev->is_physfn)) {
4215                         ret = pci_enable_sriov(pdev, max_config_dev - 1);
4216                         if (ret)
4217                                 vxge_debug_ll_config(VXGE_ERR,
4218                                         "Failed to enable SRIOV: %d \n", ret);
4219         }
4220
4221         /*
4222          * Configure vpaths and get driver configured number of vpaths
4223          * which is less than or equal to the maximum vpaths per function.
4224          */
4225         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
4226         if (!no_of_vpath) {
4227                 vxge_debug_ll_config(VXGE_ERR,
4228                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4229                 ret = 0;
4230                 goto _exit3;
4231         }
4232
4233         /* Setting driver callbacks */
4234         attr.uld_callbacks.link_up = vxge_callback_link_up;
4235         attr.uld_callbacks.link_down = vxge_callback_link_down;
4236         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4237
4238         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4239         if (status != VXGE_HW_OK) {
4240                 vxge_debug_init(VXGE_ERR,
4241                         "Failed to initialize device (%d)", status);
4242                         ret = -EINVAL;
4243                         goto _exit3;
4244         }
4245
4246         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4247
4248         /* set private device info */
4249         pci_set_drvdata(pdev, hldev);
4250
4251         ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4252         ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4253         ll_config.addr_learn_en = addr_learn_en;
4254         ll_config.rth_algorithm = RTH_ALG_JENKINS;
4255         ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4256         ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4257         ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4258         ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4259         ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4260         ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4261         ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
4262         ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4263         ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4264
4265         if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
4266                 &vdev)) {
4267                 ret = -EINVAL;
4268                 goto _exit4;
4269         }
4270
4271         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4272         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4273                 vxge_hw_device_trace_level_get(hldev));
4274
4275         /* set private HW device info */
4276         hldev->ndev = vdev->ndev;
4277         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4278         vdev->bar0 = attr.bar0;
4279         vdev->max_vpath_supported = max_vpath_supported;
4280         vdev->no_of_vpath = no_of_vpath;
4281
4282         /* Virtual Path count */
4283         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4284                 if (!vxge_bVALn(vpath_mask, i, 1))
4285                         continue;
4286                 if (j >= vdev->no_of_vpath)
4287                         break;
4288
4289                 vdev->vpaths[j].is_configured = 1;
4290                 vdev->vpaths[j].device_id = i;
4291                 vdev->vpaths[j].fifo.driver_id = j;
4292                 vdev->vpaths[j].ring.driver_id = j;
4293                 vdev->vpaths[j].vdev = vdev;
4294                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4295                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4296                                 (u8 *)ll_config.device_hw_info.mac_addrs[i],
4297                                 ETH_ALEN);
4298
4299                 /* Initialize the mac address list header */
4300                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4301
4302                 vdev->vpaths[j].mac_addr_cnt = 0;
4303                 vdev->vpaths[j].mcast_addr_cnt = 0;
4304                 j++;
4305         }
4306         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4307         vdev->max_config_port = max_config_port;
4308
4309         vdev->vlan_tag_strip = vlan_tag_strip;
4310
4311         /* map the hashing selector table to the configured vpaths */
4312         for (i = 0; i < vdev->no_of_vpath; i++)
4313                 vdev->vpath_selector[i] = vpath_selector[i];
4314
4315         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4316
4317         ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4318         ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4319         ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4320
4321         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4322                 vdev->ndev->name, ll_config.device_hw_info.serial_number);
4323
4324         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4325                 vdev->ndev->name, ll_config.device_hw_info.part_number);
4326
4327         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4328                 vdev->ndev->name, ll_config.device_hw_info.product_desc);
4329
4330         vxge_debug_init(VXGE_TRACE,
4331                 "%s: MAC ADDR: %02X:%02X:%02X:%02X:%02X:%02X",
4332                 vdev->ndev->name, macaddr[0], macaddr[1], macaddr[2],
4333                 macaddr[3], macaddr[4], macaddr[5]);
4334
4335         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4336                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4337
4338         vxge_debug_init(VXGE_TRACE,
4339                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4340                 ll_config.device_hw_info.fw_version.version,
4341                 ll_config.device_hw_info.fw_date.date);
4342
4343         if (new_device) {
4344                 switch (ll_config.device_hw_info.function_mode) {
4345                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4346                         vxge_debug_init(VXGE_TRACE,
4347                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4348                 break;
4349                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4350                         vxge_debug_init(VXGE_TRACE,
4351                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4352                 break;
4353                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4354                         vxge_debug_init(VXGE_TRACE,
4355                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4356                 break;
4357                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4358                         vxge_debug_init(VXGE_TRACE,
4359                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4360                 break;
4361                 }
4362         }
4363
4364         vxge_print_parm(vdev, vpath_mask);
4365
4366         /* Store the fw version for ethttool option */
4367         strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
4368         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4369         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4370
4371         /* Copy the station mac address to the list */
4372         for (i = 0; i < vdev->no_of_vpath; i++) {
4373                 entry = (struct vxge_mac_addrs *)
4374                                 kzalloc(sizeof(struct vxge_mac_addrs),
4375                                         GFP_KERNEL);
4376                 if (NULL == entry) {
4377                         vxge_debug_init(VXGE_ERR,
4378                                 "%s: mac_addr_list : memory allocation failed",
4379                                 vdev->ndev->name);
4380                         ret = -EPERM;
4381                         goto _exit5;
4382                 }
4383                 macaddr = (u8 *)&entry->macaddr;
4384                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4385                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4386                 vdev->vpaths[i].mac_addr_cnt = 1;
4387         }
4388
4389         kfree(device_config);
4390         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4391                 vdev->ndev->name, __func__, __LINE__);
4392
4393         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4394         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4395                 vxge_hw_device_trace_level_get(hldev));
4396
4397         return 0;
4398
4399 _exit5:
4400         for (i = 0; i < vdev->no_of_vpath; i++)
4401                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4402
4403         vxge_device_unregister(hldev);
4404 _exit4:
4405         pci_disable_sriov(pdev);
4406         vxge_hw_device_terminate(hldev);
4407 _exit3:
4408         iounmap(attr.bar0);
4409 _exit2:
4410         pci_release_regions(pdev);
4411 _exit1:
4412         pci_disable_device(pdev);
4413 _exit0:
4414         kfree(device_config);
4415         driver_config->config_dev_cnt--;
4416         pci_set_drvdata(pdev, NULL);
4417         return ret;
4418 }
4419
4420 /**
4421  * vxge_rem_nic - Free the PCI device
4422  * @pdev: structure containing the PCI related information of the device.
4423  * Description: This function is called by the Pci subsystem to release a
4424  * PCI device and free up all resource held up by the device.
4425  */
4426 static void __devexit
4427 vxge_remove(struct pci_dev *pdev)
4428 {
4429         struct __vxge_hw_device  *hldev;
4430         struct vxgedev *vdev = NULL;
4431         struct net_device *dev;
4432         int i = 0;
4433 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4434         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4435         u32 level_trace;
4436 #endif
4437
4438         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4439
4440         if (hldev == NULL)
4441                 return;
4442         dev = hldev->ndev;
4443         vdev = netdev_priv(dev);
4444
4445 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4446         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4447         level_trace = vdev->level_trace;
4448 #endif
4449         vxge_debug_entryexit(level_trace,
4450                 "%s:%d", __func__, __LINE__);
4451
4452         vxge_debug_init(level_trace,
4453                 "%s : removing PCI device...", __func__);
4454         vxge_device_unregister(hldev);
4455
4456         for (i = 0; i < vdev->no_of_vpath; i++) {
4457                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4458                 vdev->vpaths[i].mcast_addr_cnt = 0;
4459                 vdev->vpaths[i].mac_addr_cnt = 0;
4460         }
4461
4462         kfree(vdev->vpaths);
4463
4464         iounmap(vdev->bar0);
4465
4466         pci_disable_sriov(pdev);
4467
4468         /* we are safe to free it now */
4469         free_netdev(dev);
4470
4471         vxge_debug_init(level_trace,
4472                 "%s:%d  Device unregistered", __func__, __LINE__);
4473
4474         vxge_hw_device_terminate(hldev);
4475
4476         pci_disable_device(pdev);
4477         pci_release_regions(pdev);
4478         pci_set_drvdata(pdev, NULL);
4479         vxge_debug_entryexit(level_trace,
4480                 "%s:%d  Exiting...", __func__, __LINE__);
4481 }
4482
4483 static struct pci_error_handlers vxge_err_handler = {
4484         .error_detected = vxge_io_error_detected,
4485         .slot_reset = vxge_io_slot_reset,
4486         .resume = vxge_io_resume,
4487 };
4488
4489 static struct pci_driver vxge_driver = {
4490         .name = VXGE_DRIVER_NAME,
4491         .id_table = vxge_id_table,
4492         .probe = vxge_probe,
4493         .remove = __devexit_p(vxge_remove),
4494 #ifdef CONFIG_PM
4495         .suspend = vxge_pm_suspend,
4496         .resume = vxge_pm_resume,
4497 #endif
4498         .err_handler = &vxge_err_handler,
4499 };
4500
4501 static int __init
4502 vxge_starter(void)
4503 {
4504         int ret = 0;
4505         char version[32];
4506         snprintf(version, 32, "%s", DRV_VERSION);
4507
4508         printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4509                 VXGE_DRIVER_NAME);
4510         printk(KERN_CRIT "%s: Driver version: %s\n",
4511                         VXGE_DRIVER_NAME, version);
4512
4513         verify_bandwidth();
4514
4515         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4516         if (!driver_config)
4517                 return -ENOMEM;
4518
4519         ret = pci_register_driver(&vxge_driver);
4520
4521         if (driver_config->config_dev_cnt &&
4522            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4523                 vxge_debug_init(VXGE_ERR,
4524                         "%s: Configured %d of %d devices",
4525                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4526                         driver_config->total_dev_cnt);
4527
4528         if (ret)
4529                 kfree(driver_config);
4530
4531         return ret;
4532 }
4533
4534 static void __exit
4535 vxge_closer(void)
4536 {
4537         pci_unregister_driver(&vxge_driver);
4538         kfree(driver_config);
4539 }
4540 module_init(vxge_starter);
4541 module_exit(vxge_closer);