drivers/net/vxge/vxge-main.c

   1 /******************************************************************************
   2 * This software may be used and distributed according to the terms of
   3 * the GNU General Public License (GPL), incorporated herein by reference.
   4 * Drivers based on or derived from this code fall under the GPL and must
   5 * retain the authorship, copyright and license notice.  This file is not
   6 * a complete program and may only be used when the entire operating
   7 * system is licensed under the GPL.
   8 * See the file COPYING in this distribution for more information.
   9 *
  10 * vxge-main.c: Driver for Neterion Inc's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2009 Neterion Inc.
  13 *
  14 * The module loadable parameters that are supported by the driver and a brief
  15 * explanation of all the variables:
  16 * vlan_tag_strip:
  17 *       Strip VLAN Tag enable/disable. Instructs the device to remove
  18 *       the VLAN tag from all received tagged frames that are not
  19 *       replicated at the internal L2 switch.
  20 *               0 - Do not strip the VLAN tag.
  21 *               1 - Strip the VLAN tag.
  22 *
  23 * addr_learn_en:
  24 *       Enable learning the mac address of the guest OS interface in
  25 *       a virtualization environment.
  26 *               0 - DISABLE
  27 *               1 - ENABLE
  28 *
  29 * max_config_port:
  30 *       Maximum number of port to be supported.
  31 *               MIN -1 and MAX - 2
  32 *
  33 * max_config_vpath:
  34 *       This configures the maximum no of VPATH configures for each
  35 *       device function.
  36 *               MIN - 1 and MAX - 17
  37 *
  38 * max_config_dev:
  39 *       This configures maximum no of Device function to be enabled.
  40 *               MIN - 1 and MAX - 17
  41 *
  42 ******************************************************************************/
  43
  44 #include <linux/if_vlan.h>
  45 #include <linux/pci.h>
  46 #include <linux/tcp.h>
  47 #include <net/ip.h>
  48 #include <linux/netdevice.h>
  49 #include <linux/etherdevice.h>
  50 #include "vxge-main.h"
  51 #include "vxge-reg.h"
  52
  53 MODULE_LICENSE("Dual BSD/GPL");
  54 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  55         "Virtualized Server Adapter");
  56
  57 static struct pci_device_id vxge_id_table[] __devinitdata = {
  58         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  59         PCI_ANY_ID},
  60         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  61         PCI_ANY_ID},
  62         {0}
  63 };
  64
  65 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  66
  67 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  68 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  69 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  70 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  71 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  72 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  73
  74 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  75                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  76 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  77         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  78 module_param_array(bw_percentage, uint, NULL, 0);
  79
  80 static struct vxge_drv_config *driver_config;
  81
  82 static inline int is_vxge_card_up(struct vxgedev *vdev)
  83 {
  84         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  85 }
  86
  87 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  88 {
  89         unsigned long flags = 0;
  90         struct sk_buff *skb_ptr = NULL;
  91         struct sk_buff **temp, *head, *skb;
  92
  93         if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
  94                 vxge_hw_vpath_poll_tx(fifo->handle, (void **)&skb_ptr);
  95                 spin_unlock_irqrestore(&fifo->tx_lock, flags);
  96         }
  97         /* free SKBs */
  98         head = skb_ptr;
  99         while (head) {
 100                 skb = head;
 101                 temp = (struct sk_buff **)&skb->cb;
 102                 head = *temp;
 103                 *temp = NULL;
 104                 dev_kfree_skb_irq(skb);
 105         }
 106 }
 107
 108 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 109 {
 110         int i;
 111
 112         /* Complete all transmits */
 113         for (i = 0; i < vdev->no_of_vpath; i++)
 114                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 115 }
 116
 117 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 118 {
 119         int i;
 120         struct vxge_ring *ring;
 121
 122         /* Complete all receives*/
 123         for (i = 0; i < vdev->no_of_vpath; i++) {
 124                 ring = &vdev->vpaths[i].ring;
 125                 vxge_hw_vpath_poll_rx(ring->handle);
 126         }
 127 }
 128
 129 /*
 130  * MultiQ manipulation helper functions
 131  */
 132 void vxge_stop_all_tx_queue(struct vxgedev *vdev)
 133 {
 134         int i;
 135         struct net_device *dev = vdev->ndev;
 136
 137         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 138                 for (i = 0; i < vdev->no_of_vpath; i++)
 139                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP;
 140         }
 141         netif_tx_stop_all_queues(dev);
 142 }
 143
 144 void vxge_stop_tx_queue(struct vxge_fifo *fifo)
 145 {
 146         struct net_device *dev = fifo->ndev;
 147
 148         struct netdev_queue *txq = NULL;
 149         if (fifo->tx_steering_type == TX_MULTIQ_STEERING)
 150                 txq = netdev_get_tx_queue(dev, fifo->driver_id);
 151         else {
 152                 txq = netdev_get_tx_queue(dev, 0);
 153                 fifo->queue_state = VPATH_QUEUE_STOP;
 154         }
 155
 156         netif_tx_stop_queue(txq);
 157 }
 158
 159 void vxge_start_all_tx_queue(struct vxgedev *vdev)
 160 {
 161         int i;
 162         struct net_device *dev = vdev->ndev;
 163
 164         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 165                 for (i = 0; i < vdev->no_of_vpath; i++)
 166                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
 167         }
 168         netif_tx_start_all_queues(dev);
 169 }
 170
 171 static void vxge_wake_all_tx_queue(struct vxgedev *vdev)
 172 {
 173         int i;
 174         struct net_device *dev = vdev->ndev;
 175
 176         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 177                 for (i = 0; i < vdev->no_of_vpath; i++)
 178                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
 179         }
 180         netif_tx_wake_all_queues(dev);
 181 }
 182
 183 void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb)
 184 {
 185         struct net_device *dev = fifo->ndev;
 186
 187         int vpath_no = fifo->driver_id;
 188         struct netdev_queue *txq = NULL;
 189         if (fifo->tx_steering_type == TX_MULTIQ_STEERING) {
 190                 txq = netdev_get_tx_queue(dev, vpath_no);
 191                 if (netif_tx_queue_stopped(txq))
 192                         netif_tx_wake_queue(txq);
 193         } else {
 194                 txq = netdev_get_tx_queue(dev, 0);
 195                 if (fifo->queue_state == VPATH_QUEUE_STOP)
 196                         if (netif_tx_queue_stopped(txq)) {
 197                                 fifo->queue_state = VPATH_QUEUE_START;
 198                                 netif_tx_wake_queue(txq);
 199                         }
 200         }
 201 }
 202
 203 /*
 204  * vxge_callback_link_up
 205  *
 206  * This function is called during interrupt context to notify link up state
 207  * change.
 208  */
 209 void
 210 vxge_callback_link_up(struct __vxge_hw_device *hldev)
 211 {
 212         struct net_device *dev = hldev->ndev;
 213         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 214
 215         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 216                 vdev->ndev->name, __func__, __LINE__);
 217         printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
 218         vdev->stats.link_up++;
 219
 220         netif_carrier_on(vdev->ndev);
 221         vxge_wake_all_tx_queue(vdev);
 222
 223         vxge_debug_entryexit(VXGE_TRACE,
 224                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 225 }
 226
 227 /*
 228  * vxge_callback_link_down
 229  *
 230  * This function is called during interrupt context to notify link down state
 231  * change.
 232  */
 233 void
 234 vxge_callback_link_down(struct __vxge_hw_device *hldev)
 235 {
 236         struct net_device *dev = hldev->ndev;
 237         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 238
 239         vxge_debug_entryexit(VXGE_TRACE,
 240                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 241         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
 242
 243         vdev->stats.link_down++;
 244         netif_carrier_off(vdev->ndev);
 245         vxge_stop_all_tx_queue(vdev);
 246
 247         vxge_debug_entryexit(VXGE_TRACE,
 248                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 249 }
 250
 251 /*
 252  * vxge_rx_alloc
 253  *
 254  * Allocate SKB.
 255  */
 256 static struct sk_buff*
 257 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 258 {
 259         struct net_device    *dev;
 260         struct sk_buff       *skb;
 261         struct vxge_rx_priv *rx_priv;
 262
 263         dev = ring->ndev;
 264         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 265                 ring->ndev->name, __func__, __LINE__);
 266
 267         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 268
 269         /* try to allocate skb first. this one may fail */
 270         skb = netdev_alloc_skb(dev, skb_size +
 271         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 272         if (skb == NULL) {
 273                 vxge_debug_mem(VXGE_ERR,
 274                         "%s: out of memory to allocate SKB", dev->name);
 275                 ring->stats.skb_alloc_fail++;
 276                 return NULL;
 277         }
 278
 279         vxge_debug_mem(VXGE_TRACE,
 280                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 281                 __func__, __LINE__, skb);
 282
 283         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 284
 285         rx_priv->skb = skb;
 286         rx_priv->data_size = skb_size;
 287         vxge_debug_entryexit(VXGE_TRACE,
 288                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 289
 290         return skb;
 291 }
 292
 293 /*
 294  * vxge_rx_map
 295  */
 296 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 297 {
 298         struct vxge_rx_priv *rx_priv;
 299         dma_addr_t dma_addr;
 300
 301         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 302                 ring->ndev->name, __func__, __LINE__);
 303         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 304
 305         dma_addr = pci_map_single(ring->pdev, rx_priv->skb->data,
 306                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 307
 308         if (dma_addr == 0) {
 309                 ring->stats.pci_map_fail++;
 310                 return -EIO;
 311         }
 312         vxge_debug_mem(VXGE_TRACE,
 313                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 314                 ring->ndev->name, __func__, __LINE__,
 315                 (unsigned long long)dma_addr);
 316         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 317
 318         rx_priv->data_dma = dma_addr;
 319         vxge_debug_entryexit(VXGE_TRACE,
 320                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 321
 322         return 0;
 323 }
 324
 325 /*
 326  * vxge_rx_initial_replenish
 327  * Allocation of RxD as an initial replenish procedure.
 328  */
 329 static enum vxge_hw_status
 330 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 331 {
 332         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 333         struct vxge_rx_priv *rx_priv;
 334
 335         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 336                 ring->ndev->name, __func__, __LINE__);
 337         if (vxge_rx_alloc(dtrh, ring,
 338                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 339                 return VXGE_HW_FAIL;
 340
 341         if (vxge_rx_map(dtrh, ring)) {
 342                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 343                 dev_kfree_skb(rx_priv->skb);
 344
 345                 return VXGE_HW_FAIL;
 346         }
 347         vxge_debug_entryexit(VXGE_TRACE,
 348                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 349
 350         return VXGE_HW_OK;
 351 }
 352
 353 static inline void
 354 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 355                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 356 {
 357
 358         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 359                         ring->ndev->name, __func__, __LINE__);
 360         skb_record_rx_queue(skb, ring->driver_id);
 361         skb->protocol = eth_type_trans(skb, ring->ndev);
 362
 363         ring->stats.rx_frms++;
 364         ring->stats.rx_bytes += pkt_length;
 365
 366         if (skb->pkt_type == PACKET_MULTICAST)
 367                 ring->stats.rx_mcast++;
 368
 369         vxge_debug_rx(VXGE_TRACE,
 370                 "%s: %s:%d  skb protocol = %d",
 371                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 372
 373         if (ring->gro_enable) {
 374                 if (ring->vlgrp && ext_info->vlan &&
 375                         (ring->vlan_tag_strip ==
 376                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 377                         vlan_gro_receive(&ring->napi, ring->vlgrp,
 378                                         ext_info->vlan, skb);
 379                 else
 380                         napi_gro_receive(&ring->napi, skb);
 381         } else {
 382                 if (ring->vlgrp && vlan &&
 383                         (ring->vlan_tag_strip ==
 384                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 385                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 386                 else
 387                         netif_receive_skb(skb);
 388         }
 389         vxge_debug_entryexit(VXGE_TRACE,
 390                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 391 }
 392
 393 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 394                                     struct vxge_rx_priv *rx_priv)
 395 {
 396         pci_dma_sync_single_for_device(ring->pdev,
 397                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 398
 399         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 400         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 401 }
 402
 403 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 404                              void *post_dtr, struct __vxge_hw_ring *ringh)
 405 {
 406         int dtr_count = *dtr_cnt;
 407         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 408                 if (*first_dtr)
 409                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 410                 *first_dtr = post_dtr;
 411         } else
 412                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 413         dtr_count++;
 414         *dtr_cnt = dtr_count;
 415 }
 416
 417 /*
 418  * vxge_rx_1b_compl
 419  *
 420  * If the interrupt is because of a received frame or if the receive ring
 421  * contains fresh as yet un-processed frames, this function is called.
 422  */
 423 enum vxge_hw_status
 424 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 425                  u8 t_code, void *userdata)
 426 {
 427         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 428         struct  net_device *dev = ring->ndev;
 429         unsigned int dma_sizes;
 430         void *first_dtr = NULL;
 431         int dtr_cnt = 0;
 432         int data_size;
 433         dma_addr_t data_dma;
 434         int pkt_length;
 435         struct sk_buff *skb;
 436         struct vxge_rx_priv *rx_priv;
 437         struct vxge_hw_ring_rxd_info ext_info;
 438         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 439                 ring->ndev->name, __func__, __LINE__);
 440         ring->pkts_processed = 0;
 441
 442         vxge_hw_ring_replenish(ringh, 0);
 443
 444         do {
 445                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 446                 skb = rx_priv->skb;
 447                 data_size = rx_priv->data_size;
 448                 data_dma = rx_priv->data_dma;
 449
 450                 vxge_debug_rx(VXGE_TRACE,
 451                         "%s: %s:%d  skb = 0x%p",
 452                         ring->ndev->name, __func__, __LINE__, skb);
 453
 454                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 455                 pkt_length = dma_sizes;
 456
 457                 vxge_debug_rx(VXGE_TRACE,
 458                         "%s: %s:%d  Packet Length = %d",
 459                         ring->ndev->name, __func__, __LINE__, pkt_length);
 460
 461                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 462
 463                 /* check skb validity */
 464                 vxge_assert(skb);
 465
 466                 prefetch((char *)skb + L1_CACHE_BYTES);
 467                 if (unlikely(t_code)) {
 468
 469                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 470                                 VXGE_HW_OK) {
 471
 472                                 ring->stats.rx_errors++;
 473                                 vxge_debug_rx(VXGE_TRACE,
 474                                         "%s: %s :%d Rx T_code is %d",
 475                                         ring->ndev->name, __func__,
 476                                         __LINE__, t_code);
 477
 478                                 /* If the t_code is not supported and if the
 479                                  * t_code is other than 0x5 (unparseable packet
 480                                  * such as unknown UPV6 header), Drop it !!!
 481                                  */
 482                                 vxge_re_pre_post(dtr, ring, rx_priv);
 483
 484                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 485                                 ring->stats.rx_dropped++;
 486                                 continue;
 487                         }
 488                 }
 489
 490                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 491
 492                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 493
 494                                 if (!vxge_rx_map(dtr, ring)) {
 495                                         skb_put(skb, pkt_length);
 496
 497                                         pci_unmap_single(ring->pdev, data_dma,
 498                                                 data_size, PCI_DMA_FROMDEVICE);
 499
 500                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 501                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 502                                                 ringh);
 503                                 } else {
 504                                         dev_kfree_skb(rx_priv->skb);
 505                                         rx_priv->skb = skb;
 506                                         rx_priv->data_size = data_size;
 507                                         vxge_re_pre_post(dtr, ring, rx_priv);
 508
 509                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 510                                                 ringh);
 511                                         ring->stats.rx_dropped++;
 512                                         break;
 513                                 }
 514                         } else {
 515                                 vxge_re_pre_post(dtr, ring, rx_priv);
 516
 517                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 518                                 ring->stats.rx_dropped++;
 519                                 break;
 520                         }
 521                 } else {
 522                         struct sk_buff *skb_up;
 523
 524                         skb_up = netdev_alloc_skb(dev, pkt_length +
 525                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 526                         if (skb_up != NULL) {
 527                                 skb_reserve(skb_up,
 528                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 529
 530                                 pci_dma_sync_single_for_cpu(ring->pdev,
 531                                         data_dma, data_size,
 532                                         PCI_DMA_FROMDEVICE);
 533
 534                                 vxge_debug_mem(VXGE_TRACE,
 535                                         "%s: %s:%d  skb_up = %p",
 536                                         ring->ndev->name, __func__,
 537                                         __LINE__, skb);
 538                                 memcpy(skb_up->data, skb->data, pkt_length);
 539
 540                                 vxge_re_pre_post(dtr, ring, rx_priv);
 541
 542                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 543                                         ringh);
 544                                 /* will netif_rx small SKB instead */
 545                                 skb = skb_up;
 546                                 skb_put(skb, pkt_length);
 547                         } else {
 548                                 vxge_re_pre_post(dtr, ring, rx_priv);
 549
 550                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 551                                 vxge_debug_rx(VXGE_ERR,
 552                                         "%s: vxge_rx_1b_compl: out of "
 553                                         "memory", dev->name);
 554                                 ring->stats.skb_alloc_fail++;
 555                                 break;
 556                         }
 557                 }
 558
 559                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 560                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 561                     ring->rx_csum && /* Offload Rx side CSUM */
 562                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 563                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 564                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 565                 else
 566                         skb->ip_summed = CHECKSUM_NONE;
 567
 568                 vxge_rx_complete(ring, skb, ext_info.vlan,
 569                         pkt_length, &ext_info);
 570
 571                 ring->budget--;
 572                 ring->pkts_processed++;
 573                 if (!ring->budget)
 574                         break;
 575
 576         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 577                 &t_code) == VXGE_HW_OK);
 578
 579         if (first_dtr)
 580                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 581
 582         dev->last_rx = jiffies;
 583
 584         vxge_debug_entryexit(VXGE_TRACE,
 585                                 "%s:%d  Exiting...",
 586                                 __func__, __LINE__);
 587         return VXGE_HW_OK;
 588 }
 589
 590 /*
 591  * vxge_xmit_compl
 592  *
 593  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 594  * this function is called. It identifies the last TxD whose buffer was
 595  * freed and frees all skbs whose data have already DMA'ed into the NICs
 596  * internal memory.
 597  */
 598 enum vxge_hw_status
 599 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 600                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 601                 void **skb_ptr)
 602 {
 603         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 604         struct sk_buff *skb, *head = NULL;
 605         struct sk_buff **temp;
 606         int pkt_cnt = 0;
 607
 608         vxge_debug_entryexit(VXGE_TRACE,
 609                 "%s:%d Entered....", __func__, __LINE__);
 610
 611         do {
 612                 int frg_cnt;
 613                 skb_frag_t *frag;
 614                 int i = 0, j;
 615                 struct vxge_tx_priv *txd_priv =
 616                         vxge_hw_fifo_txdl_private_get(dtr);
 617
 618                 skb = txd_priv->skb;
 619                 frg_cnt = skb_shinfo(skb)->nr_frags;
 620                 frag = &skb_shinfo(skb)->frags[0];
 621
 622                 vxge_debug_tx(VXGE_TRACE,
 623                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 624                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 625                                 __LINE__, fifo_hw, dtr, t_code);
 626                 /* check skb validity */
 627                 vxge_assert(skb);
 628                 vxge_debug_tx(VXGE_TRACE,
 629                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 630                         fifo->ndev->name, __func__, __LINE__,
 631                         skb, txd_priv, frg_cnt);
 632                 if (unlikely(t_code)) {
 633                         fifo->stats.tx_errors++;
 634                         vxge_debug_tx(VXGE_ERR,
 635                                 "%s: tx: dtr %p completed due to "
 636                                 "error t_code %01x", fifo->ndev->name,
 637                                 dtr, t_code);
 638                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 639                 }
 640
 641                 /*  for unfragmented skb */
 642                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 643                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 644
 645                 for (j = 0; j < frg_cnt; j++) {
 646                         pci_unmap_page(fifo->pdev,
 647                                         txd_priv->dma_buffers[i++],
 648                                         frag->size, PCI_DMA_TODEVICE);
 649                         frag += 1;
 650                 }
 651
 652                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 653
 654                 /* Updating the statistics block */
 655                 fifo->stats.tx_frms++;
 656                 fifo->stats.tx_bytes += skb->len;
 657
 658                 temp = (struct sk_buff **)&skb->cb;
 659                 *temp = head;
 660                 head = skb;
 661
 662                 pkt_cnt++;
 663                 if (pkt_cnt > fifo->indicate_max_pkts)
 664                         break;
 665
 666         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 667                                 &dtr, &t_code) == VXGE_HW_OK);
 668
 669         vxge_wake_tx_queue(fifo, skb);
 670
 671         if (skb_ptr)
 672                 *skb_ptr = (void *) head;
 673
 674         vxge_debug_entryexit(VXGE_TRACE,
 675                                 "%s: %s:%d  Exiting...",
 676                                 fifo->ndev->name, __func__, __LINE__);
 677         return VXGE_HW_OK;
 678 }
 679
 680 /* select a vpath to trasmit the packet */
 681 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
 682         int *do_lock)
 683 {
 684         u16 queue_len, counter = 0;
 685         if (skb->protocol == htons(ETH_P_IP)) {
 686                 struct iphdr *ip;
 687                 struct tcphdr *th;
 688
 689                 ip = ip_hdr(skb);
 690
 691                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 692                         th = (struct tcphdr *)(((unsigned char *)ip) +
 693                                         ip->ihl*4);
 694
 695                         queue_len = vdev->no_of_vpath;
 696                         counter = (ntohs(th->source) +
 697                                 ntohs(th->dest)) &
 698                                 vdev->vpath_selector[queue_len - 1];
 699                         if (counter >= queue_len)
 700                                 counter = queue_len - 1;
 701
 702                         if (ip->protocol == IPPROTO_UDP) {
 703 #ifdef NETIF_F_LLTX
 704                                 *do_lock = 0;
 705 #endif
 706                         }
 707                 }
 708         }
 709         return counter;
 710 }
 711
 712 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 713         struct vxge_vpath *vpath, u64 del_mac)
 714 {
 715         struct list_head *entry, *next;
 716         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 717                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 718                         return TRUE;
 719         }
 720         return FALSE;
 721 }
 722
 723 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 724 {
 725         struct macInfo mac_info;
 726         u8 *mac_address = NULL;
 727         u64 mac_addr = 0, vpath_vector = 0;
 728         int vpath_idx = 0;
 729         enum vxge_hw_status status = VXGE_HW_OK;
 730         struct vxge_vpath *vpath = NULL;
 731         struct __vxge_hw_device *hldev;
 732
 733         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
 734
 735         mac_address = (u8 *)&mac_addr;
 736         memcpy(mac_address, mac_header, ETH_ALEN);
 737
 738         /* Is this mac address already in the list? */
 739         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 740                 vpath = &vdev->vpaths[vpath_idx];
 741                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 742                         return vpath_idx;
 743         }
 744
 745         memset(&mac_info, 0, sizeof(struct macInfo));
 746         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 747
 748         /* Any vpath has room to add mac address to its da table? */
 749         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 750                 vpath = &vdev->vpaths[vpath_idx];
 751                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 752                         /* Add this mac address to this vpath */
 753                         mac_info.vpath_no = vpath_idx;
 754                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 755                         status = vxge_add_mac_addr(vdev, &mac_info);
 756                         if (status != VXGE_HW_OK)
 757                                 return -EPERM;
 758                         return vpath_idx;
 759                 }
 760         }
 761
 762         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 763         vpath_idx = 0;
 764         mac_info.vpath_no = vpath_idx;
 765         /* Is the first vpath already selected as catch-basin ? */
 766         vpath = &vdev->vpaths[vpath_idx];
 767         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 768                 /* Add this mac address to this vpath */
 769                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 770                         return -EPERM;
 771                 return vpath_idx;
 772         }
 773
 774         /* Select first vpath as catch-basin */
 775         vpath_vector = vxge_mBIT(vpath->device_id);
 776         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 777                                 vxge_hw_mgmt_reg_type_mrpcim,
 778                                 0,
 779                                 (ulong)offsetof(
 780                                         struct vxge_hw_mrpcim_reg,
 781                                         rts_mgr_cbasin_cfg),
 782                                 vpath_vector);
 783         if (status != VXGE_HW_OK) {
 784                 vxge_debug_tx(VXGE_ERR,
 785                         "%s: Unable to set the vpath-%d in catch-basin mode",
 786                         VXGE_DRIVER_NAME, vpath->device_id);
 787                 return -EPERM;
 788         }
 789
 790         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 791                 return -EPERM;
 792
 793         return vpath_idx;
 794 }
 795
 796 /**
 797  * vxge_xmit
 798  * @skb : the socket buffer containing the Tx data.
 799  * @dev : device pointer.
 800  *
 801  * This function is the Tx entry point of the driver. Neterion NIC supports
 802  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 803  * NOTE: when device cant queue the pkt, just the trans_start variable will
 804  * not be upadted.
 805 */
 806 static int
 807 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 808 {
 809         struct vxge_fifo *fifo = NULL;
 810         void *dtr_priv;
 811         void *dtr = NULL;
 812         struct vxgedev *vdev = NULL;
 813         enum vxge_hw_status status;
 814         int frg_cnt, first_frg_len;
 815         skb_frag_t *frag;
 816         int i = 0, j = 0, avail;
 817         u64 dma_pointer;
 818         struct vxge_tx_priv *txdl_priv = NULL;
 819         struct __vxge_hw_fifo *fifo_hw;
 820         u32 max_mss = 0x0;
 821         int offload_type;
 822         unsigned long flags = 0;
 823         int vpath_no = 0;
 824         int do_spin_tx_lock = 1;
 825
 826         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 827                         dev->name, __func__, __LINE__);
 828
 829         /* A buffer with no data will be dropped */
 830         if (unlikely(skb->len <= 0)) {
 831                 vxge_debug_tx(VXGE_ERR,
 832                         "%s: Buffer has no data..", dev->name);
 833                 dev_kfree_skb(skb);
 834                 return NETDEV_TX_OK;
 835         }
 836
 837         vdev = (struct vxgedev *)netdev_priv(dev);
 838
 839         if (unlikely(!is_vxge_card_up(vdev))) {
 840                 vxge_debug_tx(VXGE_ERR,
 841                         "%s: vdev not initialized", dev->name);
 842                 dev_kfree_skb(skb);
 843                 return NETDEV_TX_OK;
 844         }
 845
 846         if (vdev->config.addr_learn_en) {
 847                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 848                 if (vpath_no == -EPERM) {
 849                         vxge_debug_tx(VXGE_ERR,
 850                                 "%s: Failed to store the mac address",
 851                                 dev->name);
 852                         dev_kfree_skb(skb);
 853                         return NETDEV_TX_OK;
 854                 }
 855         }
 856
 857         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 858                 vpath_no = skb_get_queue_mapping(skb);
 859         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 860                 vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
 861
 862         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 863
 864         if (vpath_no >= vdev->no_of_vpath)
 865                 vpath_no = 0;
 866
 867         fifo = &vdev->vpaths[vpath_no].fifo;
 868         fifo_hw = fifo->handle;
 869
 870         if (do_spin_tx_lock)
 871                 spin_lock_irqsave(&fifo->tx_lock, flags);
 872         else {
 873                 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
 874                         return NETDEV_TX_LOCKED;
 875         }
 876
 877         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
 878                 if (netif_subqueue_stopped(dev, skb)) {
 879                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 880                         return NETDEV_TX_BUSY;
 881                 }
 882         } else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
 883                 if (netif_queue_stopped(dev)) {
 884                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 885                         return NETDEV_TX_BUSY;
 886                 }
 887         }
 888         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 889         if (avail == 0) {
 890                 vxge_debug_tx(VXGE_ERR,
 891                         "%s: No free TXDs available", dev->name);
 892                 fifo->stats.txd_not_free++;
 893                 vxge_stop_tx_queue(fifo);
 894                 goto _exit2;
 895         }
 896
 897         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 898         if (unlikely(status != VXGE_HW_OK)) {
 899                 vxge_debug_tx(VXGE_ERR,
 900                    "%s: Out of descriptors .", dev->name);
 901                 fifo->stats.txd_out_of_desc++;
 902                 vxge_stop_tx_queue(fifo);
 903                 goto _exit2;
 904         }
 905
 906         vxge_debug_tx(VXGE_TRACE,
 907                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 908                 dev->name, __func__, __LINE__,
 909                 fifo_hw, dtr, dtr_priv);
 910
 911         if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
 912                 u16 vlan_tag = vlan_tx_tag_get(skb);
 913                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 914         }
 915
 916         first_frg_len = skb_headlen(skb);
 917
 918         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 919                                 PCI_DMA_TODEVICE);
 920
 921         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 922                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 923                 vxge_stop_tx_queue(fifo);
 924                 fifo->stats.pci_map_fail++;
 925                 goto _exit2;
 926         }
 927
 928         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 929         txdl_priv->skb = skb;
 930         txdl_priv->dma_buffers[j] = dma_pointer;
 931
 932         frg_cnt = skb_shinfo(skb)->nr_frags;
 933         vxge_debug_tx(VXGE_TRACE,
 934                         "%s: %s:%d skb = %p txdl_priv = %p "
 935                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 936                         __func__, __LINE__, skb, txdl_priv,
 937                         frg_cnt, (unsigned long long)dma_pointer);
 938
 939         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 940                 first_frg_len);
 941
 942         frag = &skb_shinfo(skb)->frags[0];
 943         for (i = 0; i < frg_cnt; i++) {
 944                 /* ignore 0 length fragment */
 945                 if (!frag->size)
 946                         continue;
 947
 948                 dma_pointer =
 949                         (u64)pci_map_page(fifo->pdev, frag->page,
 950                                 frag->page_offset, frag->size,
 951                                 PCI_DMA_TODEVICE);
 952
 953                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 954                         goto _exit0;
 955                 vxge_debug_tx(VXGE_TRACE,
 956                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 957                                 dev->name, __func__, __LINE__, i,
 958                                 (unsigned long long)dma_pointer);
 959
 960                 txdl_priv->dma_buffers[j] = dma_pointer;
 961                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 962                                         frag->size);
 963                 frag += 1;
 964         }
 965
 966         offload_type = vxge_offload_type(skb);
 967
 968         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 969
 970                 int mss = vxge_tcp_mss(skb);
 971                 if (mss) {
 972                         max_mss = dev->mtu + ETH_HLEN -
 973                                 VXGE_HW_TCPIP_HEADER_MAX_SIZE;
 974                         if (mss > max_mss)
 975                                 mss = max_mss;
 976                         vxge_debug_tx(VXGE_TRACE,
 977                                 "%s: %s:%d mss = %d",
 978                                 dev->name, __func__, __LINE__, mss);
 979                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 980                 } else {
 981                         vxge_assert(skb->len <=
 982                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 983                         vxge_assert(0);
 984                         goto _exit1;
 985                 }
 986         }
 987
 988         if (skb->ip_summed == CHECKSUM_PARTIAL)
 989                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 990                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 991                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 992                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 993
 994         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 995         dev->trans_start = jiffies;
 996         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 997
 998         VXGE_COMPLETE_VPATH_TX(fifo);
 999         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
1000                 dev->name, __func__, __LINE__);
1001         return 0;
1002
1003 _exit0:
1004         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
1005
1006 _exit1:
1007         j = 0;
1008         frag = &skb_shinfo(skb)->frags[0];
1009
1010         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
1011                         skb_headlen(skb), PCI_DMA_TODEVICE);
1012
1013         for (; j < i; j++) {
1014                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
1015                         frag->size, PCI_DMA_TODEVICE);
1016                 frag += 1;
1017         }
1018
1019         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
1020 _exit2:
1021         dev_kfree_skb(skb);
1022         spin_unlock_irqrestore(&fifo->tx_lock, flags);
1023         VXGE_COMPLETE_VPATH_TX(fifo);
1024
1025         return 0;
1026 }
1027
1028 /*
1029  * vxge_rx_term
1030  *
1031  * Function will be called by hw function to abort all outstanding receive
1032  * descriptors.
1033  */
1034 static void
1035 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1036 {
1037         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1038         struct vxge_rx_priv *rx_priv =
1039                 vxge_hw_ring_rxd_private_get(dtrh);
1040
1041         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1042                         ring->ndev->name, __func__, __LINE__);
1043         if (state != VXGE_HW_RXD_STATE_POSTED)
1044                 return;
1045
1046         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1047                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1048
1049         dev_kfree_skb(rx_priv->skb);
1050
1051         vxge_debug_entryexit(VXGE_TRACE,
1052                 "%s: %s:%d  Exiting...",
1053                 ring->ndev->name, __func__, __LINE__);
1054 }
1055
1056 /*
1057  * vxge_tx_term
1058  *
1059  * Function will be called to abort all outstanding tx descriptors
1060  */
1061 static void
1062 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1063 {
1064         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1065         skb_frag_t *frag;
1066         int i = 0, j, frg_cnt;
1067         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1068         struct sk_buff *skb = txd_priv->skb;
1069
1070         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1071
1072         if (state != VXGE_HW_TXDL_STATE_POSTED)
1073                 return;
1074
1075         /* check skb validity */
1076         vxge_assert(skb);
1077         frg_cnt = skb_shinfo(skb)->nr_frags;
1078         frag = &skb_shinfo(skb)->frags[0];
1079
1080         /*  for unfragmented skb */
1081         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1082                 skb_headlen(skb), PCI_DMA_TODEVICE);
1083
1084         for (j = 0; j < frg_cnt; j++) {
1085                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1086                                frag->size, PCI_DMA_TODEVICE);
1087                 frag += 1;
1088         }
1089
1090         dev_kfree_skb(skb);
1091
1092         vxge_debug_entryexit(VXGE_TRACE,
1093                 "%s:%d  Exiting...", __func__, __LINE__);
1094 }
1095
1096 /**
1097  * vxge_set_multicast
1098  * @dev: pointer to the device structure
1099  *
1100  * Entry point for multicast address enable/disable
1101  * This function is a driver entry point which gets called by the kernel
1102  * whenever multicast addresses must be enabled/disabled. This also gets
1103  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1104  * determine, if multicast address must be enabled or if promiscuous mode
1105  * is to be disabled etc.
1106  */
1107 static void vxge_set_multicast(struct net_device *dev)
1108 {
1109         struct dev_mc_list *mclist;
1110         struct vxgedev *vdev;
1111         int i, mcast_cnt = 0;
1112         struct __vxge_hw_device  *hldev;
1113         enum vxge_hw_status status = VXGE_HW_OK;
1114         struct macInfo mac_info;
1115         int vpath_idx = 0;
1116         struct vxge_mac_addrs *mac_entry;
1117         struct list_head *list_head;
1118         struct list_head *entry, *next;
1119         u8 *mac_address = NULL;
1120
1121         vxge_debug_entryexit(VXGE_TRACE,
1122                 "%s:%d", __func__, __LINE__);
1123
1124         vdev = (struct vxgedev *)netdev_priv(dev);
1125         hldev = (struct __vxge_hw_device  *)vdev->devh;
1126
1127         if (unlikely(!is_vxge_card_up(vdev)))
1128                 return;
1129
1130         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1131                 for (i = 0; i < vdev->no_of_vpath; i++) {
1132                         vxge_assert(vdev->vpaths[i].is_open);
1133                         status = vxge_hw_vpath_mcast_enable(
1134                                                 vdev->vpaths[i].handle);
1135                         vdev->all_multi_flg = 1;
1136                 }
1137         } else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1138                 for (i = 0; i < vdev->no_of_vpath; i++) {
1139                         vxge_assert(vdev->vpaths[i].is_open);
1140                         status = vxge_hw_vpath_mcast_disable(
1141                                                 vdev->vpaths[i].handle);
1142                         vdev->all_multi_flg = 1;
1143                 }
1144         }
1145
1146         if (status != VXGE_HW_OK)
1147                 vxge_debug_init(VXGE_ERR,
1148                         "failed to %s multicast, status %d",
1149                         dev->flags & IFF_ALLMULTI ?
1150                         "enable" : "disable", status);
1151
1152         if (!vdev->config.addr_learn_en) {
1153                 if (dev->flags & IFF_PROMISC) {
1154                         for (i = 0; i < vdev->no_of_vpath; i++) {
1155                                 vxge_assert(vdev->vpaths[i].is_open);
1156                                 status = vxge_hw_vpath_promisc_enable(
1157                                                 vdev->vpaths[i].handle);
1158                         }
1159                 } else {
1160                         for (i = 0; i < vdev->no_of_vpath; i++) {
1161                                 vxge_assert(vdev->vpaths[i].is_open);
1162                                 status = vxge_hw_vpath_promisc_disable(
1163                                                 vdev->vpaths[i].handle);
1164                         }
1165                 }
1166         }
1167
1168         memset(&mac_info, 0, sizeof(struct macInfo));
1169         /* Update individual M_CAST address list */
1170         if ((!vdev->all_multi_flg) && dev->mc_count) {
1171
1172                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1173                 list_head = &vdev->vpaths[0].mac_addr_list;
1174                 if ((dev->mc_count +
1175                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1176                                 vdev->vpaths[0].max_mac_addr_cnt)
1177                         goto _set_all_mcast;
1178
1179                 /* Delete previous MC's */
1180                 for (i = 0; i < mcast_cnt; i++) {
1181                         if (!list_empty(list_head))
1182                                 mac_entry = (struct vxge_mac_addrs *)
1183                                         list_first_entry(list_head,
1184                                                 struct vxge_mac_addrs,
1185                                                 item);
1186
1187                         list_for_each_safe(entry, next, list_head) {
1188
1189                                 mac_entry = (struct vxge_mac_addrs *) entry;
1190                                 /* Copy the mac address to delete */
1191                                 mac_address = (u8 *)&mac_entry->macaddr;
1192                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1193
1194                                 /* Is this a multicast address */
1195                                 if (0x01 & mac_info.macaddr[0]) {
1196                                         for (vpath_idx = 0; vpath_idx <
1197                                                 vdev->no_of_vpath;
1198                                                 vpath_idx++) {
1199                                                 mac_info.vpath_no = vpath_idx;
1200                                                 status = vxge_del_mac_addr(
1201                                                                 vdev,
1202                                                                 &mac_info);
1203                                         }
1204                                 }
1205                         }
1206                 }
1207
1208                 /* Add new ones */
1209                 for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
1210                         i++, mclist = mclist->next) {
1211
1212                         memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
1213                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1214                                         vpath_idx++) {
1215                                 mac_info.vpath_no = vpath_idx;
1216                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1217                                 status = vxge_add_mac_addr(vdev, &mac_info);
1218                                 if (status != VXGE_HW_OK) {
1219                                         vxge_debug_init(VXGE_ERR,
1220                                                 "%s:%d Setting individual"
1221                                                 "multicast address failed",
1222                                                 __func__, __LINE__);
1223                                         goto _set_all_mcast;
1224                                 }
1225                         }
1226                 }
1227
1228                 return;
1229 _set_all_mcast:
1230                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1231                 /* Delete previous MC's */
1232                 for (i = 0; i < mcast_cnt; i++) {
1233
1234                         list_for_each_safe(entry, next, list_head) {
1235
1236                                 mac_entry = (struct vxge_mac_addrs *) entry;
1237                                 /* Copy the mac address to delete */
1238                                 mac_address = (u8 *)&mac_entry->macaddr;
1239                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1240
1241                                 /* Is this a multicast address */
1242                                 if (0x01 & mac_info.macaddr[0])
1243                                         break;
1244                         }
1245
1246                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1247                                         vpath_idx++) {
1248                                 mac_info.vpath_no = vpath_idx;
1249                                 status = vxge_del_mac_addr(vdev, &mac_info);
1250                         }
1251                 }
1252
1253                 /* Enable all multicast */
1254                 for (i = 0; i < vdev->no_of_vpath; i++) {
1255                         vxge_assert(vdev->vpaths[i].is_open);
1256                         status = vxge_hw_vpath_mcast_enable(
1257                                                 vdev->vpaths[i].handle);
1258                         if (status != VXGE_HW_OK) {
1259                                 vxge_debug_init(VXGE_ERR,
1260                                         "%s:%d Enabling all multicasts failed",
1261                                          __func__, __LINE__);
1262                         }
1263                         vdev->all_multi_flg = 1;
1264                 }
1265                 dev->flags |= IFF_ALLMULTI;
1266         }
1267
1268         vxge_debug_entryexit(VXGE_TRACE,
1269                 "%s:%d  Exiting...", __func__, __LINE__);
1270 }
1271
1272 /**
1273  * vxge_set_mac_addr
1274  * @dev: pointer to the device structure
1275  *
1276  * Update entry "0" (default MAC addr)
1277  */
1278 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1279 {
1280         struct sockaddr *addr = p;
1281         struct vxgedev *vdev;
1282         struct __vxge_hw_device  *hldev;
1283         enum vxge_hw_status status = VXGE_HW_OK;
1284         struct macInfo mac_info_new, mac_info_old;
1285         int vpath_idx = 0;
1286
1287         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1288
1289         vdev = (struct vxgedev *)netdev_priv(dev);
1290         hldev = vdev->devh;
1291
1292         if (!is_valid_ether_addr(addr->sa_data))
1293                 return -EINVAL;
1294
1295         memset(&mac_info_new, 0, sizeof(struct macInfo));
1296         memset(&mac_info_old, 0, sizeof(struct macInfo));
1297
1298         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1299                 __func__, __LINE__);
1300
1301         /* Get the old address */
1302         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1303
1304         /* Copy the new address */
1305         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1306
1307         /* First delete the old mac address from all the vpaths
1308         as we can't specify the index while adding new mac address */
1309         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1310                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1311                 if (!vpath->is_open) {
1312                         /* This can happen when this interface is added/removed
1313                         to the bonding interface. Delete this station address
1314                         from the linked list */
1315                         vxge_mac_list_del(vpath, &mac_info_old);
1316
1317                         /* Add this new address to the linked list
1318                         for later restoring */
1319                         vxge_mac_list_add(vpath, &mac_info_new);
1320
1321                         continue;
1322                 }
1323                 /* Delete the station address */
1324                 mac_info_old.vpath_no = vpath_idx;
1325                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1326         }
1327
1328         if (unlikely(!is_vxge_card_up(vdev))) {
1329                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1330                 return VXGE_HW_OK;
1331         }
1332
1333         /* Set this mac address to all the vpaths */
1334         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1335                 mac_info_new.vpath_no = vpath_idx;
1336                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1337                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1338                 if (status != VXGE_HW_OK)
1339                         return -EINVAL;
1340         }
1341
1342         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1343
1344         return status;
1345 }
1346
1347 /*
1348  * vxge_vpath_intr_enable
1349  * @vdev: pointer to vdev
1350  * @vp_id: vpath for which to enable the interrupts
1351  *
1352  * Enables the interrupts for the vpath
1353 */
1354 void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1355 {
1356         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1357         int msix_id, alarm_msix_id;
1358         int tim_msix_id[4] = {[0 ...3] = 0};
1359
1360         vxge_hw_vpath_intr_enable(vpath->handle);
1361
1362         if (vdev->config.intr_type == INTA)
1363                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1364         else {
1365                 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1366                 alarm_msix_id =
1367                         VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1368
1369                 tim_msix_id[0] = msix_id;
1370                 tim_msix_id[1] = msix_id + 1;
1371                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1372                         alarm_msix_id);
1373
1374                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1375                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1376
1377                 /* enable the alarm vector */
1378                 vxge_hw_vpath_msix_unmask(vpath->handle, alarm_msix_id);
1379         }
1380 }
1381
1382 /*
1383  * vxge_vpath_intr_disable
1384  * @vdev: pointer to vdev
1385  * @vp_id: vpath for which to disable the interrupts
1386  *
1387  * Disables the interrupts for the vpath
1388 */
1389 void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1390 {
1391         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1392         int msix_id;
1393
1394         vxge_hw_vpath_intr_disable(vpath->handle);
1395
1396         if (vdev->config.intr_type == INTA)
1397                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1398         else {
1399                 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1400                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1401                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1402
1403                 /* disable the alarm vector */
1404                 msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1405                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1406         }
1407 }
1408
1409 /*
1410  * vxge_reset_vpath
1411  * @vdev: pointer to vdev
1412  * @vp_id: vpath to reset
1413  *
1414  * Resets the vpath
1415 */
1416 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1417 {
1418         enum vxge_hw_status status = VXGE_HW_OK;
1419         int ret = 0;
1420
1421         /* check if device is down already */
1422         if (unlikely(!is_vxge_card_up(vdev)))
1423                 return 0;
1424
1425         /* is device reset already scheduled */
1426         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1427                 return 0;
1428
1429         if (vdev->vpaths[vp_id].handle) {
1430                 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1431                                 == VXGE_HW_OK) {
1432                         if (is_vxge_card_up(vdev) &&
1433                                 vxge_hw_vpath_recover_from_reset(
1434                                         vdev->vpaths[vp_id].handle)
1435                                         != VXGE_HW_OK) {
1436                                 vxge_debug_init(VXGE_ERR,
1437                                         "vxge_hw_vpath_recover_from_reset"
1438                                         "failed for vpath:%d", vp_id);
1439                                 return status;
1440                         }
1441                 } else {
1442                         vxge_debug_init(VXGE_ERR,
1443                                 "vxge_hw_vpath_reset failed for"
1444                                 "vpath:%d", vp_id);
1445                                 return status;
1446                 }
1447         } else
1448                 return VXGE_HW_FAIL;
1449
1450         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1451         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1452
1453         /* Enable all broadcast */
1454         vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1455
1456         /* Enable the interrupts */
1457         vxge_vpath_intr_enable(vdev, vp_id);
1458
1459         smp_wmb();
1460
1461         /* Enable the flow of traffic through the vpath */
1462         vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1463
1464         smp_wmb();
1465         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1466         vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1467
1468         /* Vpath reset done */
1469         clear_bit(vp_id, &vdev->vp_reset);
1470
1471         /* Start the vpath queue */
1472         vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1473
1474         return ret;
1475 }
1476
1477 static int do_vxge_reset(struct vxgedev *vdev, int event)
1478 {
1479         enum vxge_hw_status status;
1480         int ret = 0, vp_id, i;
1481
1482         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1483
1484         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1485                 /* check if device is down already */
1486                 if (unlikely(!is_vxge_card_up(vdev)))
1487                         return 0;
1488
1489                 /* is reset already scheduled */
1490                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1491                         return 0;
1492         }
1493
1494         if (event == VXGE_LL_FULL_RESET) {
1495                 /* wait for all the vpath reset to complete */
1496                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1497                         while (test_bit(vp_id, &vdev->vp_reset))
1498                                 msleep(50);
1499                 }
1500
1501                 /* if execution mode is set to debug, don't reset the adapter */
1502                 if (unlikely(vdev->exec_mode)) {
1503                         vxge_debug_init(VXGE_ERR,
1504                                 "%s: execution mode is debug, returning..",
1505                                 vdev->ndev->name);
1506                 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1507                 vxge_stop_all_tx_queue(vdev);
1508                 return 0;
1509                 }
1510         }
1511
1512         if (event == VXGE_LL_FULL_RESET) {
1513                 vxge_hw_device_intr_disable(vdev->devh);
1514
1515                 switch (vdev->cric_err_event) {
1516                 case VXGE_HW_EVENT_UNKNOWN:
1517                         vxge_stop_all_tx_queue(vdev);
1518                         vxge_debug_init(VXGE_ERR,
1519                                 "fatal: %s: Disabling device due to"
1520                                 "unknown error",
1521                                 vdev->ndev->name);
1522                         ret = -EPERM;
1523                         goto out;
1524                 case VXGE_HW_EVENT_RESET_START:
1525                         break;
1526                 case VXGE_HW_EVENT_RESET_COMPLETE:
1527                 case VXGE_HW_EVENT_LINK_DOWN:
1528                 case VXGE_HW_EVENT_LINK_UP:
1529                 case VXGE_HW_EVENT_ALARM_CLEARED:
1530                 case VXGE_HW_EVENT_ECCERR:
1531                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1532                         ret = -EPERM;
1533                         goto out;
1534                 case VXGE_HW_EVENT_FIFO_ERR:
1535                 case VXGE_HW_EVENT_VPATH_ERR:
1536                         break;
1537                 case VXGE_HW_EVENT_CRITICAL_ERR:
1538                         vxge_stop_all_tx_queue(vdev);
1539                         vxge_debug_init(VXGE_ERR,
1540                                 "fatal: %s: Disabling device due to"
1541                                 "serious error",
1542                                 vdev->ndev->name);
1543                         /* SOP or device reset required */
1544                         /* This event is not currently used */
1545                         ret = -EPERM;
1546                         goto out;
1547                 case VXGE_HW_EVENT_SERR:
1548                         vxge_stop_all_tx_queue(vdev);
1549                         vxge_debug_init(VXGE_ERR,
1550                                 "fatal: %s: Disabling device due to"
1551                                 "serious error",
1552                                 vdev->ndev->name);
1553                         ret = -EPERM;
1554                         goto out;
1555                 case VXGE_HW_EVENT_SRPCIM_SERR:
1556                 case VXGE_HW_EVENT_MRPCIM_SERR:
1557                         ret = -EPERM;
1558                         goto out;
1559                 case VXGE_HW_EVENT_SLOT_FREEZE:
1560                         vxge_stop_all_tx_queue(vdev);
1561                         vxge_debug_init(VXGE_ERR,
1562                                 "fatal: %s: Disabling device due to"
1563                                 "slot freeze",
1564                                 vdev->ndev->name);
1565                         ret = -EPERM;
1566                         goto out;
1567                 default:
1568                         break;
1569
1570                 }
1571         }
1572
1573         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1574                 vxge_stop_all_tx_queue(vdev);
1575
1576         if (event == VXGE_LL_FULL_RESET) {
1577                 status = vxge_reset_all_vpaths(vdev);
1578                 if (status != VXGE_HW_OK) {
1579                         vxge_debug_init(VXGE_ERR,
1580                                 "fatal: %s: can not reset vpaths",
1581                                 vdev->ndev->name);
1582                         ret = -EPERM;
1583                         goto out;
1584                 }
1585         }
1586
1587         if (event == VXGE_LL_COMPL_RESET) {
1588                 for (i = 0; i < vdev->no_of_vpath; i++)
1589                         if (vdev->vpaths[i].handle) {
1590                                 if (vxge_hw_vpath_recover_from_reset(
1591                                         vdev->vpaths[i].handle)
1592                                                 != VXGE_HW_OK) {
1593                                         vxge_debug_init(VXGE_ERR,
1594                                                 "vxge_hw_vpath_recover_"
1595                                                 "from_reset failed for vpath: "
1596                                                 "%d", i);
1597                                         ret = -EPERM;
1598                                         goto out;
1599                                 }
1600                                 } else {
1601                                         vxge_debug_init(VXGE_ERR,
1602                                         "vxge_hw_vpath_reset failed for "
1603                                                 "vpath:%d", i);
1604                                         ret = -EPERM;
1605                                         goto out;
1606                                 }
1607         }
1608
1609         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1610                 /* Reprogram the DA table with populated mac addresses */
1611                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1612                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1613                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1614                 }
1615
1616                 /* enable vpath interrupts */
1617                 for (i = 0; i < vdev->no_of_vpath; i++)
1618                         vxge_vpath_intr_enable(vdev, i);
1619
1620                 vxge_hw_device_intr_enable(vdev->devh);
1621
1622                 smp_wmb();
1623
1624                 /* Indicate card up */
1625                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1626
1627                 /* Get the traffic to flow through the vpaths */
1628                 for (i = 0; i < vdev->no_of_vpath; i++) {
1629                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1630                         smp_wmb();
1631                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1632                 }
1633
1634                 vxge_wake_all_tx_queue(vdev);
1635         }
1636
1637 out:
1638         vxge_debug_entryexit(VXGE_TRACE,
1639                 "%s:%d  Exiting...", __func__, __LINE__);
1640
1641         /* Indicate reset done */
1642         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1643                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1644         return ret;
1645 }
1646
1647 /*
1648  * vxge_reset
1649  * @vdev: pointer to ll device
1650  *
1651  * driver may reset the chip on events of serr, eccerr, etc
1652  */
1653 int vxge_reset(struct vxgedev *vdev)
1654 {
1655         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1656         return 0;
1657 }
1658
1659 /**
1660  * vxge_poll - Receive handler when Receive Polling is used.
1661  * @dev: pointer to the device structure.
1662  * @budget: Number of packets budgeted to be processed in this iteration.
1663  *
1664  * This function comes into picture only if Receive side is being handled
1665  * through polling (called NAPI in linux). It mostly does what the normal
1666  * Rx interrupt handler does in terms of descriptor and packet processing
1667  * but not in an interrupt context. Also it will process a specified number
1668  * of packets at most in one iteration. This value is passed down by the
1669  * kernel as the function argument 'budget'.
1670  */
1671 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1672 {
1673         struct vxge_ring *ring =
1674                 container_of(napi, struct vxge_ring, napi);
1675         int budget_org = budget;
1676         ring->budget = budget;
1677
1678         vxge_hw_vpath_poll_rx(ring->handle);
1679
1680         if (ring->pkts_processed < budget_org) {
1681                 napi_complete(napi);
1682                 /* Re enable the Rx interrupts for the vpath */
1683                 vxge_hw_channel_msix_unmask(
1684                                 (struct __vxge_hw_channel *)ring->handle,
1685                                 ring->rx_vector_no);
1686         }
1687
1688         return ring->pkts_processed;
1689 }
1690
1691 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1692 {
1693         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1694         int pkts_processed = 0;
1695         int i;
1696         int budget_org = budget;
1697         struct vxge_ring *ring;
1698
1699         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1700                 pci_get_drvdata(vdev->pdev);
1701
1702         for (i = 0; i < vdev->no_of_vpath; i++) {
1703                 ring = &vdev->vpaths[i].ring;
1704                 ring->budget = budget;
1705                 vxge_hw_vpath_poll_rx(ring->handle);
1706                 pkts_processed += ring->pkts_processed;
1707                 budget -= ring->pkts_processed;
1708                 if (budget <= 0)
1709                         break;
1710         }
1711
1712         VXGE_COMPLETE_ALL_TX(vdev);
1713
1714         if (pkts_processed < budget_org) {
1715                 napi_complete(napi);
1716                 /* Re enable the Rx interrupts for the ring */
1717                 vxge_hw_device_unmask_all(hldev);
1718                 vxge_hw_device_flush_io(hldev);
1719         }
1720
1721         return pkts_processed;
1722 }
1723
1724 #ifdef CONFIG_NET_POLL_CONTROLLER
1725 /**
1726  * vxge_netpoll - netpoll event handler entry point
1727  * @dev : pointer to the device structure.
1728  * Description:
1729  *      This function will be called by upper layer to check for events on the
1730  * interface in situations where interrupts are disabled. It is used for
1731  * specific in-kernel networking tasks, such as remote consoles and kernel
1732  * debugging over the network (example netdump in RedHat).
1733  */
1734 static void vxge_netpoll(struct net_device *dev)
1735 {
1736         struct __vxge_hw_device  *hldev;
1737         struct vxgedev *vdev;
1738
1739         vdev = (struct vxgedev *)netdev_priv(dev);
1740         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1741
1742         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1743
1744         if (pci_channel_offline(vdev->pdev))
1745                 return;
1746
1747         disable_irq(dev->irq);
1748         vxge_hw_device_clear_tx_rx(hldev);
1749
1750         vxge_hw_device_clear_tx_rx(hldev);
1751         VXGE_COMPLETE_ALL_RX(vdev);
1752         VXGE_COMPLETE_ALL_TX(vdev);
1753
1754         enable_irq(dev->irq);
1755
1756         vxge_debug_entryexit(VXGE_TRACE,
1757                 "%s:%d  Exiting...", __func__, __LINE__);
1758         return;
1759 }
1760 #endif
1761
1762 /* RTH configuration */
1763 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1764 {
1765         enum vxge_hw_status status = VXGE_HW_OK;
1766         struct vxge_hw_rth_hash_types hash_types;
1767         u8 itable[256] = {0}; /* indirection table */
1768         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1769         int index;
1770
1771         /*
1772          * Filling
1773          *      - itable with bucket numbers
1774          *      - mtable with bucket-to-vpath mapping
1775          */
1776         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1777                 itable[index] = index;
1778                 mtable[index] = index % vdev->no_of_vpath;
1779         }
1780
1781         /* Fill RTH hash types */
1782         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1783         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1784         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1785         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1786         hash_types.hash_type_tcpipv6ex_en =
1787                                         vdev->config.rth_hash_type_tcpipv6ex;
1788         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1789
1790         /* set indirection table, bucket-to-vpath mapping */
1791         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1792                                                 vdev->no_of_vpath,
1793                                                 mtable, itable,
1794                                                 vdev->config.rth_bkt_sz);
1795         if (status != VXGE_HW_OK) {
1796                 vxge_debug_init(VXGE_ERR,
1797                         "RTH indirection table configuration failed "
1798                         "for vpath:%d", vdev->vpaths[0].device_id);
1799                 return status;
1800         }
1801
1802         /*
1803         * Because the itable_set() method uses the active_table field
1804         * for the target virtual path the RTH config should be updated
1805         * for all VPATHs. The h/w only uses the lowest numbered VPATH
1806         * when steering frames.
1807         */
1808          for (index = 0; index < vdev->no_of_vpath; index++) {
1809                 status = vxge_hw_vpath_rts_rth_set(
1810                                 vdev->vpaths[index].handle,
1811                                 vdev->config.rth_algorithm,
1812                                 &hash_types,
1813                                 vdev->config.rth_bkt_sz);
1814
1815                  if (status != VXGE_HW_OK) {
1816                         vxge_debug_init(VXGE_ERR,
1817                                 "RTH configuration failed for vpath:%d",
1818                                 vdev->vpaths[index].device_id);
1819                         return status;
1820                  }
1821          }
1822
1823         return status;
1824 }
1825
1826 int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1827 {
1828         struct vxge_mac_addrs *new_mac_entry;
1829         u8 *mac_address = NULL;
1830
1831         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1832                 return TRUE;
1833
1834         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1835         if (!new_mac_entry) {
1836                 vxge_debug_mem(VXGE_ERR,
1837                         "%s: memory allocation failed",
1838                         VXGE_DRIVER_NAME);
1839                 return FALSE;
1840         }
1841
1842         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1843
1844         /* Copy the new mac address to the list */
1845         mac_address = (u8 *)&new_mac_entry->macaddr;
1846         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1847
1848         new_mac_entry->state = mac->state;
1849         vpath->mac_addr_cnt++;
1850
1851         /* Is this a multicast address */
1852         if (0x01 & mac->macaddr[0])
1853                 vpath->mcast_addr_cnt++;
1854
1855         return TRUE;
1856 }
1857
1858 /* Add a mac address to DA table */
1859 enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1860 {
1861         enum vxge_hw_status status = VXGE_HW_OK;
1862         struct vxge_vpath *vpath;
1863         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1864
1865         if (0x01 & mac->macaddr[0]) /* multicast address */
1866                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1867         else
1868                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1869
1870         vpath = &vdev->vpaths[mac->vpath_no];
1871         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1872                                                 mac->macmask, duplicate_mode);
1873         if (status != VXGE_HW_OK) {
1874                 vxge_debug_init(VXGE_ERR,
1875                         "DA config add entry failed for vpath:%d",
1876                         vpath->device_id);
1877         } else
1878                 if (FALSE == vxge_mac_list_add(vpath, mac))
1879                         status = -EPERM;
1880
1881         return status;
1882 }
1883
1884 int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1885 {
1886         struct list_head *entry, *next;
1887         u64 del_mac = 0;
1888         u8 *mac_address = (u8 *) (&del_mac);
1889
1890         /* Copy the mac address to delete from the list */
1891         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1892
1893         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1894                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1895                         list_del(entry);
1896                         kfree((struct vxge_mac_addrs *)entry);
1897                         vpath->mac_addr_cnt--;
1898
1899                         /* Is this a multicast address */
1900                         if (0x01 & mac->macaddr[0])
1901                                 vpath->mcast_addr_cnt--;
1902                         return TRUE;
1903                 }
1904         }
1905
1906         return FALSE;
1907 }
1908 /* delete a mac address from DA table */
1909 enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1910 {
1911         enum vxge_hw_status status = VXGE_HW_OK;
1912         struct vxge_vpath *vpath;
1913
1914         vpath = &vdev->vpaths[mac->vpath_no];
1915         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1916                                                 mac->macmask);
1917         if (status != VXGE_HW_OK) {
1918                 vxge_debug_init(VXGE_ERR,
1919                         "DA config delete entry failed for vpath:%d",
1920                         vpath->device_id);
1921         } else
1922                 vxge_mac_list_del(vpath, mac);
1923         return status;
1924 }
1925
1926 /* list all mac addresses from DA table */
1927 enum vxge_hw_status
1928 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1929                                         struct macInfo *mac)
1930 {
1931         enum vxge_hw_status status = VXGE_HW_OK;
1932         unsigned char macmask[ETH_ALEN];
1933         unsigned char macaddr[ETH_ALEN];
1934
1935         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1936                                 macaddr, macmask);
1937         if (status != VXGE_HW_OK) {
1938                 vxge_debug_init(VXGE_ERR,
1939                         "DA config list entry failed for vpath:%d",
1940                         vpath->device_id);
1941                 return status;
1942         }
1943
1944         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1945
1946                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1947                                 macaddr, macmask);
1948                 if (status != VXGE_HW_OK)
1949                         break;
1950         }
1951
1952         return status;
1953 }
1954
1955 /* Store all vlan ids from the list to the vid table */
1956 enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1957 {
1958         enum vxge_hw_status status = VXGE_HW_OK;
1959         struct vxgedev *vdev = vpath->vdev;
1960         u16 vid;
1961
1962         if (vdev->vlgrp && vpath->is_open) {
1963
1964                 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1965                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1966                                 continue;
1967                         /* Add these vlan to the vid table */
1968                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1969                 }
1970         }
1971
1972         return status;
1973 }
1974
1975 /* Store all mac addresses from the list to the DA table */
1976 enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1977 {
1978         enum vxge_hw_status status = VXGE_HW_OK;
1979         struct macInfo mac_info;
1980         u8 *mac_address = NULL;
1981         struct list_head *entry, *next;
1982
1983         memset(&mac_info, 0, sizeof(struct macInfo));
1984
1985         if (vpath->is_open) {
1986
1987                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1988                         mac_address =
1989                                 (u8 *)&
1990                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1991                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1992                         ((struct vxge_mac_addrs *)entry)->state =
1993                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1994                         /* does this mac address already exist in da table? */
1995                         status = vxge_search_mac_addr_in_da_table(vpath,
1996                                 &mac_info);
1997                         if (status != VXGE_HW_OK) {
1998                                 /* Add this mac address to the DA table */
1999                                 status = vxge_hw_vpath_mac_addr_add(
2000                                         vpath->handle, mac_info.macaddr,
2001                                         mac_info.macmask,
2002                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
2003                                 if (status != VXGE_HW_OK) {
2004                                         vxge_debug_init(VXGE_ERR,
2005                                             "DA add entry failed for vpath:%d",
2006                                             vpath->device_id);
2007                                         ((struct vxge_mac_addrs *)entry)->state
2008                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
2009                                 }
2010                         }
2011                 }
2012         }
2013
2014         return status;
2015 }
2016
2017 /* reset vpaths */
2018 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
2019 {
2020         int i;
2021         enum vxge_hw_status status = VXGE_HW_OK;
2022
2023         for (i = 0; i < vdev->no_of_vpath; i++)
2024                 if (vdev->vpaths[i].handle) {
2025                         if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
2026                                         == VXGE_HW_OK) {
2027                                 if (is_vxge_card_up(vdev) &&
2028                                         vxge_hw_vpath_recover_from_reset(
2029                                                 vdev->vpaths[i].handle)
2030                                                 != VXGE_HW_OK) {
2031                                         vxge_debug_init(VXGE_ERR,
2032                                                 "vxge_hw_vpath_recover_"
2033                                                 "from_reset failed for vpath: "
2034                                                 "%d", i);
2035                                         return status;
2036                                 }
2037                         } else {
2038                                 vxge_debug_init(VXGE_ERR,
2039                                         "vxge_hw_vpath_reset failed for "
2040                                         "vpath:%d", i);
2041                                         return status;
2042                         }
2043                 }
2044         return status;
2045 }
2046
2047 /* close vpaths */
2048 void vxge_close_vpaths(struct vxgedev *vdev, int index)
2049 {
2050         int i;
2051         for (i = index; i < vdev->no_of_vpath; i++) {
2052                 if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
2053                         vxge_hw_vpath_close(vdev->vpaths[i].handle);
2054                         vdev->stats.vpaths_open--;
2055                 }
2056                 vdev->vpaths[i].is_open = 0;
2057                 vdev->vpaths[i].handle  = NULL;
2058         }
2059 }
2060
2061 /* open vpaths */
2062 int vxge_open_vpaths(struct vxgedev *vdev)
2063 {
2064         enum vxge_hw_status status;
2065         int i;
2066         u32 vp_id = 0;
2067         struct vxge_hw_vpath_attr attr;
2068
2069         for (i = 0; i < vdev->no_of_vpath; i++) {
2070                 vxge_assert(vdev->vpaths[i].is_configured);
2071                 attr.vp_id = vdev->vpaths[i].device_id;
2072                 attr.fifo_attr.callback = vxge_xmit_compl;
2073                 attr.fifo_attr.txdl_term = vxge_tx_term;
2074                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2075                 attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
2076
2077                 attr.ring_attr.callback = vxge_rx_1b_compl;
2078                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2079                 attr.ring_attr.rxd_term = vxge_rx_term;
2080                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2081                 attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
2082
2083                 vdev->vpaths[i].ring.ndev = vdev->ndev;
2084                 vdev->vpaths[i].ring.pdev = vdev->pdev;
2085                 status = vxge_hw_vpath_open(vdev->devh, &attr,
2086                                 &(vdev->vpaths[i].handle));
2087                 if (status == VXGE_HW_OK) {
2088                         vdev->vpaths[i].fifo.handle =
2089                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2090                         vdev->vpaths[i].ring.handle =
2091                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2092                         vdev->vpaths[i].fifo.tx_steering_type =
2093                                 vdev->config.tx_steering_type;
2094                         vdev->vpaths[i].fifo.ndev = vdev->ndev;
2095                         vdev->vpaths[i].fifo.pdev = vdev->pdev;
2096                         vdev->vpaths[i].fifo.indicate_max_pkts =
2097                                 vdev->config.fifo_indicate_max_pkts;
2098                         vdev->vpaths[i].ring.rx_vector_no = 0;
2099                         vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
2100                         vdev->vpaths[i].is_open = 1;
2101                         vdev->vp_handles[i] = vdev->vpaths[i].handle;
2102                         vdev->vpaths[i].ring.gro_enable =
2103                                                 vdev->config.gro_enable;
2104                         vdev->vpaths[i].ring.vlan_tag_strip =
2105                                                 vdev->vlan_tag_strip;
2106                         vdev->stats.vpaths_open++;
2107                 } else {
2108                         vdev->stats.vpath_open_fail++;
2109                         vxge_debug_init(VXGE_ERR,
2110                                 "%s: vpath: %d failed to open "
2111                                 "with status: %d",
2112                             vdev->ndev->name, vdev->vpaths[i].device_id,
2113                                 status);
2114                         vxge_close_vpaths(vdev, 0);
2115                         return -EPERM;
2116                 }
2117
2118                 vp_id =
2119                   ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
2120                   vpath->vp_id;
2121                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2122         }
2123         return VXGE_HW_OK;
2124 }
2125
2126 /*
2127  *  vxge_isr_napi
2128  *  @irq: the irq of the device.
2129  *  @dev_id: a void pointer to the hldev structure of the Titan device
2130  *  @ptregs: pointer to the registers pushed on the stack.
2131  *
2132  *  This function is the ISR handler of the device when napi is enabled. It
2133  *  identifies the reason for the interrupt and calls the relevant service
2134  *  routines.
2135  */
2136 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2137 {
2138         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device  *)dev_id;
2139         struct vxgedev *vdev;
2140         struct net_device *dev;
2141         u64 reason;
2142         enum vxge_hw_status status;
2143
2144         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2145
2146         dev = hldev->ndev;
2147         vdev = netdev_priv(dev);
2148
2149         if (pci_channel_offline(vdev->pdev))
2150                 return IRQ_NONE;
2151
2152         if (unlikely(!is_vxge_card_up(vdev)))
2153                 return IRQ_NONE;
2154
2155         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2156                         &reason);
2157         if (status == VXGE_HW_OK) {
2158                 vxge_hw_device_mask_all(hldev);
2159
2160                 if (reason &
2161                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2162                         vdev->vpaths_deployed >>
2163                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2164
2165                         vxge_hw_device_clear_tx_rx(hldev);
2166                         napi_schedule(&vdev->napi);
2167                         vxge_debug_intr(VXGE_TRACE,
2168                                 "%s:%d  Exiting...", __func__, __LINE__);
2169                         return IRQ_HANDLED;
2170                 } else
2171                         vxge_hw_device_unmask_all(hldev);
2172         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2173                 (status == VXGE_HW_ERR_CRITICAL) ||
2174                 (status == VXGE_HW_ERR_FIFO))) {
2175                 vxge_hw_device_mask_all(hldev);
2176                 vxge_hw_device_flush_io(hldev);
2177                 return IRQ_HANDLED;
2178         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2179                 return IRQ_HANDLED;
2180
2181         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2182         return IRQ_NONE;
2183 }
2184
2185 #ifdef CONFIG_PCI_MSI
2186
2187 static irqreturn_t
2188 vxge_tx_msix_handle(int irq, void *dev_id)
2189 {
2190         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2191
2192         VXGE_COMPLETE_VPATH_TX(fifo);
2193
2194         return IRQ_HANDLED;
2195 }
2196
2197 static irqreturn_t
2198 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2199 {
2200         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2201
2202         /* MSIX_IDX for Rx is 1 */
2203         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2204                                         ring->rx_vector_no);
2205
2206         napi_schedule(&ring->napi);
2207         return IRQ_HANDLED;
2208 }
2209
2210 static irqreturn_t
2211 vxge_alarm_msix_handle(int irq, void *dev_id)
2212 {
2213         int i;
2214         enum vxge_hw_status status;
2215         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2216         struct vxgedev *vdev = vpath->vdev;
2217         int alarm_msix_id =
2218                 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2219
2220         for (i = 0; i < vdev->no_of_vpath; i++) {
2221                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
2222                         alarm_msix_id);
2223
2224                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2225                         vdev->exec_mode);
2226                 if (status == VXGE_HW_OK) {
2227
2228                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2229                                 alarm_msix_id);
2230                         continue;
2231                 }
2232                 vxge_debug_intr(VXGE_ERR,
2233                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2234                         VXGE_DRIVER_NAME, status);
2235         }
2236         return IRQ_HANDLED;
2237 }
2238
2239 static int vxge_alloc_msix(struct vxgedev *vdev)
2240 {
2241         int j, i, ret = 0;
2242         int intr_cnt = 0;
2243         int alarm_msix_id = 0, msix_intr_vect = 0;
2244         vdev->intr_cnt = 0;
2245
2246         /* Tx/Rx MSIX Vectors count */
2247         vdev->intr_cnt = vdev->no_of_vpath * 2;
2248
2249         /* Alarm MSIX Vectors count */
2250         vdev->intr_cnt++;
2251
2252         intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2253         vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
2254                                                 GFP_KERNEL);
2255         if (!vdev->entries) {
2256                 vxge_debug_init(VXGE_ERR,
2257                         "%s: memory allocation failed",
2258                         VXGE_DRIVER_NAME);
2259                 return  -ENOMEM;
2260         }
2261
2262         vdev->vxge_entries = kzalloc(intr_cnt * sizeof(struct vxge_msix_entry),
2263                                                         GFP_KERNEL);
2264         if (!vdev->vxge_entries) {
2265                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2266                         VXGE_DRIVER_NAME);
2267                 kfree(vdev->entries);
2268                 return -ENOMEM;
2269         }
2270
2271         /* Last vector in the list is used for alarm */
2272         alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2273         for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {
2274
2275                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2276
2277                 /* Initialize the fifo vector */
2278                 vdev->entries[j].entry = msix_intr_vect;
2279                 vdev->vxge_entries[j].entry = msix_intr_vect;
2280                 vdev->vxge_entries[j].in_use = 0;
2281                 j++;
2282
2283                 /* Initialize the ring vector */
2284                 vdev->entries[j].entry = msix_intr_vect + 1;
2285                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2286                 vdev->vxge_entries[j].in_use = 0;
2287                 j++;
2288         }
2289
2290         /* Initialize the alarm vector */
2291         vdev->entries[j].entry = alarm_msix_id;
2292         vdev->vxge_entries[j].entry = alarm_msix_id;
2293         vdev->vxge_entries[j].in_use = 0;
2294
2295         ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2296         /* if driver request exceeeds available irq's, request with a small
2297          * number.
2298         */
2299         if (ret > 0) {
2300                 vxge_debug_init(VXGE_ERR,
2301                         "%s: MSI-X enable failed for %d vectors, available: %d",
2302                         VXGE_DRIVER_NAME, intr_cnt, ret);
2303                 vdev->max_vpath_supported = vdev->no_of_vpath;
2304                 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2305
2306                 /* Reset the alarm vector setting */
2307                 vdev->entries[j].entry = 0;
2308                 vdev->vxge_entries[j].entry = 0;
2309
2310                 /* Initialize the alarm vector with new setting */
2311                 vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
2312                 vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
2313                 vdev->vxge_entries[intr_cnt - 1].in_use = 0;
2314
2315                 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2316                 if (!ret)
2317                         vxge_debug_init(VXGE_ERR,
2318                                 "%s: MSI-X enabled for %d vectors",
2319                                 VXGE_DRIVER_NAME, intr_cnt);
2320         }
2321
2322         if (ret) {
2323                 vxge_debug_init(VXGE_ERR,
2324                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2325                         VXGE_DRIVER_NAME, intr_cnt, ret);
2326                 kfree(vdev->entries);
2327                 kfree(vdev->vxge_entries);
2328                 vdev->entries = NULL;
2329                 vdev->vxge_entries = NULL;
2330                 return -ENODEV;
2331         }
2332         return 0;
2333 }
2334
2335 static int vxge_enable_msix(struct vxgedev *vdev)
2336 {
2337
2338         int i, ret = 0;
2339         enum vxge_hw_status status;
2340         /* 0 - Tx, 1 - Rx  */
2341         int tim_msix_id[4];
2342         int alarm_msix_id = 0, msix_intr_vect = 0;;
2343         vdev->intr_cnt = 0;
2344
2345         /* allocate msix vectors */
2346         ret = vxge_alloc_msix(vdev);
2347         if (!ret) {
2348                 /* Last vector in the list is used for alarm */
2349                 alarm_msix_id =
2350                         VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2351                 for (i = 0; i < vdev->no_of_vpath; i++) {
2352
2353                         /* If fifo or ring are not enabled
2354                            the MSIX vector for that should be set to 0
2355                            Hence initializeing this array to all 0s.
2356                         */
2357                         memset(tim_msix_id, 0, sizeof(tim_msix_id));
2358                         msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2359                         tim_msix_id[0] = msix_intr_vect;
2360
2361                         tim_msix_id[1] = msix_intr_vect + 1;
2362                         vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];
2363
2364                         status = vxge_hw_vpath_msix_set(
2365                                                 vdev->vpaths[i].handle,
2366                                                 tim_msix_id, alarm_msix_id);
2367                         if (status != VXGE_HW_OK) {
2368                                 vxge_debug_init(VXGE_ERR,
2369                                         "vxge_hw_vpath_msix_set "
2370                                         "failed with status : %x", status);
2371                                 kfree(vdev->entries);
2372                                 kfree(vdev->vxge_entries);
2373                                 pci_disable_msix(vdev->pdev);
2374                                 return -ENODEV;
2375                         }
2376                 }
2377         }
2378
2379         return ret;
2380 }
2381
2382 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2383 {
2384         int intr_cnt;
2385
2386         for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
2387                 intr_cnt++) {
2388                 if (vdev->vxge_entries[intr_cnt].in_use) {
2389                         synchronize_irq(vdev->entries[intr_cnt].vector);
2390                         free_irq(vdev->entries[intr_cnt].vector,
2391                                 vdev->vxge_entries[intr_cnt].arg);
2392                         vdev->vxge_entries[intr_cnt].in_use = 0;
2393                 }
2394         }
2395
2396         kfree(vdev->entries);
2397         kfree(vdev->vxge_entries);
2398         vdev->entries = NULL;
2399         vdev->vxge_entries = NULL;
2400
2401         if (vdev->config.intr_type == MSI_X)
2402                 pci_disable_msix(vdev->pdev);
2403 }
2404 #endif
2405
2406 static void vxge_rem_isr(struct vxgedev *vdev)
2407 {
2408         struct __vxge_hw_device  *hldev;
2409         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2410
2411 #ifdef CONFIG_PCI_MSI
2412         if (vdev->config.intr_type == MSI_X) {
2413                 vxge_rem_msix_isr(vdev);
2414         } else
2415 #endif
2416         if (vdev->config.intr_type == INTA) {
2417                         synchronize_irq(vdev->pdev->irq);
2418                         free_irq(vdev->pdev->irq, hldev);
2419         }
2420 }
2421
2422 static int vxge_add_isr(struct vxgedev *vdev)
2423 {
2424         int ret = 0;
2425         struct __vxge_hw_device  *hldev =
2426                 (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2427 #ifdef CONFIG_PCI_MSI
2428         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2429         u64 function_mode = vdev->config.device_hw_info.function_mode;
2430         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2431
2432         if (vdev->config.intr_type == MSI_X)
2433                 ret = vxge_enable_msix(vdev);
2434
2435         if (ret) {
2436                 vxge_debug_init(VXGE_ERR,
2437                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2438                 if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2439                         test_and_set_bit(__VXGE_STATE_CARD_UP,
2440                                 &driver_config->inta_dev_open))
2441                         return VXGE_HW_FAIL;
2442                 else {
2443                         vxge_debug_init(VXGE_ERR,
2444                                 "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2445                         vdev->config.intr_type = INTA;
2446                         vxge_hw_device_set_intr_type(vdev->devh,
2447                                 VXGE_HW_INTR_MODE_IRQLINE);
2448                         vxge_close_vpaths(vdev, 1);
2449                         vdev->no_of_vpath = 1;
2450                         vdev->stats.vpaths_open = 1;
2451                 }
2452         }
2453
2454         if (vdev->config.intr_type == MSI_X) {
2455                 for (intr_idx = 0;
2456                      intr_idx < (vdev->no_of_vpath *
2457                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2458
2459                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2460                         irq_req = 0;
2461
2462                         switch (msix_idx) {
2463                         case 0:
2464                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2465                                         "%s:vxge fn: %d vpath: %d Tx MSI-X: %d",
2466                                         vdev->ndev->name, pci_fun, vp_idx,
2467                                         vdev->entries[intr_cnt].entry);
2468                                 ret = request_irq(
2469                                     vdev->entries[intr_cnt].vector,
2470                                         vxge_tx_msix_handle, 0,
2471                                         vdev->desc[intr_cnt],
2472                                         &vdev->vpaths[vp_idx].fifo);
2473                                         vdev->vxge_entries[intr_cnt].arg =
2474                                                 &vdev->vpaths[vp_idx].fifo;
2475                                 irq_req = 1;
2476                                 break;
2477                         case 1:
2478                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2479                                         "%s:vxge fn: %d vpath: %d Rx MSI-X: %d",
2480                                         vdev->ndev->name, pci_fun, vp_idx,
2481                                         vdev->entries[intr_cnt].entry);
2482                                 ret = request_irq(
2483                                     vdev->entries[intr_cnt].vector,
2484                                         vxge_rx_msix_napi_handle,
2485                                         0,
2486                                         vdev->desc[intr_cnt],
2487                                         &vdev->vpaths[vp_idx].ring);
2488                                         vdev->vxge_entries[intr_cnt].arg =
2489                                                 &vdev->vpaths[vp_idx].ring;
2490                                 irq_req = 1;
2491                                 break;
2492                         }
2493
2494                         if (ret) {
2495                                 vxge_debug_init(VXGE_ERR,
2496                                         "%s: MSIX - %d  Registration failed",
2497                                         vdev->ndev->name, intr_cnt);
2498                                 vxge_rem_msix_isr(vdev);
2499                                 if ((function_mode ==
2500                                         VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2501                                         test_and_set_bit(__VXGE_STATE_CARD_UP,
2502                                                 &driver_config->inta_dev_open))
2503                                         return VXGE_HW_FAIL;
2504                                 else {
2505                                         vxge_hw_device_set_intr_type(
2506                                                 vdev->devh,
2507                                                 VXGE_HW_INTR_MODE_IRQLINE);
2508                                                 vdev->config.intr_type = INTA;
2509                                         vxge_debug_init(VXGE_ERR,
2510                                                 "%s: Defaulting to INTA"
2511                                                 , vdev->ndev->name);
2512                                         vxge_close_vpaths(vdev, 1);
2513                                         vdev->no_of_vpath = 1;
2514                                         vdev->stats.vpaths_open = 1;
2515                                         goto INTA_MODE;
2516                                 }
2517                         }
2518
2519                         if (irq_req) {
2520                                 /* We requested for this msix interrupt */
2521                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2522                                 vxge_hw_vpath_msix_unmask(
2523                                         vdev->vpaths[vp_idx].handle,
2524                                         intr_idx);
2525                                 intr_cnt++;
2526                         }
2527
2528                         /* Point to next vpath handler */
2529                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0)
2530                                 && (vp_idx < (vdev->no_of_vpath - 1)))
2531                                         vp_idx++;
2532                 }
2533
2534                 intr_cnt = vdev->max_vpath_supported * 2;
2535                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2536                         "%s:vxge Alarm fn: %d MSI-X: %d",
2537                         vdev->ndev->name, pci_fun,
2538                         vdev->entries[intr_cnt].entry);
2539                 /* For Alarm interrupts */
2540                 ret = request_irq(vdev->entries[intr_cnt].vector,
2541                                         vxge_alarm_msix_handle, 0,
2542                                         vdev->desc[intr_cnt],
2543                                         &vdev->vpaths[vp_idx]);
2544                 if (ret) {
2545                         vxge_debug_init(VXGE_ERR,
2546                                 "%s: MSIX - %d Registration failed",
2547                                 vdev->ndev->name, intr_cnt);
2548                         vxge_rem_msix_isr(vdev);
2549                         if ((function_mode ==
2550                                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2551                                 test_and_set_bit(__VXGE_STATE_CARD_UP,
2552                                                 &driver_config->inta_dev_open))
2553                                 return VXGE_HW_FAIL;
2554                         else {
2555                                 vxge_hw_device_set_intr_type(vdev->devh,
2556                                                 VXGE_HW_INTR_MODE_IRQLINE);
2557                                 vdev->config.intr_type = INTA;
2558                                 vxge_debug_init(VXGE_ERR,
2559                                         "%s: Defaulting to INTA",
2560                                         vdev->ndev->name);
2561                                 vxge_close_vpaths(vdev, 1);
2562                                 vdev->no_of_vpath = 1;
2563                                 vdev->stats.vpaths_open = 1;
2564                                 goto INTA_MODE;
2565                         }
2566                 }
2567
2568                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2569                                         intr_idx - 2);
2570                 vdev->vxge_entries[intr_cnt].in_use = 1;
2571                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[vp_idx];
2572         }
2573 INTA_MODE:
2574 #endif
2575         snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);
2576
2577         if (vdev->config.intr_type == INTA) {
2578                 ret = request_irq((int) vdev->pdev->irq,
2579                         vxge_isr_napi,
2580                         IRQF_SHARED, vdev->desc[0], hldev);
2581                 if (ret) {
2582                         vxge_debug_init(VXGE_ERR,
2583                                 "%s %s-%d: ISR registration failed",
2584                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2585                         return -ENODEV;
2586                 }
2587                 vxge_debug_init(VXGE_TRACE,
2588                         "new %s-%d line allocated",
2589                         "IRQ", vdev->pdev->irq);
2590         }
2591
2592         return VXGE_HW_OK;
2593 }
2594
2595 static void vxge_poll_vp_reset(unsigned long data)
2596 {
2597         struct vxgedev *vdev = (struct vxgedev *)data;
2598         int i, j = 0;
2599
2600         for (i = 0; i < vdev->no_of_vpath; i++) {
2601                 if (test_bit(i, &vdev->vp_reset)) {
2602                         vxge_reset_vpath(vdev, i);
2603                         j++;
2604                 }
2605         }
2606         if (j && (vdev->config.intr_type != MSI_X)) {
2607                 vxge_hw_device_unmask_all(vdev->devh);
2608                 vxge_hw_device_flush_io(vdev->devh);
2609         }
2610
2611         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2612 }
2613
2614 static void vxge_poll_vp_lockup(unsigned long data)
2615 {
2616         struct vxgedev *vdev = (struct vxgedev *)data;
2617         int i;
2618         struct vxge_ring *ring;
2619         enum vxge_hw_status status = VXGE_HW_OK;
2620
2621         for (i = 0; i < vdev->no_of_vpath; i++) {
2622                 ring = &vdev->vpaths[i].ring;
2623                 /* Did this vpath received any packets */
2624                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2625                         status = vxge_hw_vpath_check_leak(ring->handle);
2626
2627                         /* Did it received any packets last time */
2628                         if ((VXGE_HW_FAIL == status) &&
2629                                 (VXGE_HW_FAIL == ring->last_status)) {
2630
2631                                 /* schedule vpath reset */
2632                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2633
2634                                         /* disable interrupts for this vpath */
2635                                         vxge_vpath_intr_disable(vdev, i);
2636
2637                                         /* stop the queue for this vpath */
2638                                         vxge_stop_tx_queue(&vdev->vpaths[i].
2639                                                                 fifo);
2640                                         continue;
2641                                 }
2642                         }
2643                 }
2644                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2645                 ring->last_status = status;
2646         }
2647
2648         /* Check every 1 milli second */
2649         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2650 }
2651
2652 /**
2653  * vxge_open
2654  * @dev: pointer to the device structure.
2655  *
2656  * This function is the open entry point of the driver. It mainly calls a
2657  * function to allocate Rx buffers and inserts them into the buffer
2658  * descriptors and then enables the Rx part of the NIC.
2659  * Return value: '0' on success and an appropriate (-)ve integer as
2660  * defined in errno.h file on failure.
2661  */
2662 int
2663 vxge_open(struct net_device *dev)
2664 {
2665         enum vxge_hw_status status;
2666         struct vxgedev *vdev;
2667         struct __vxge_hw_device *hldev;
2668         int ret = 0;
2669         int i;
2670         u64 val64, function_mode;
2671         vxge_debug_entryexit(VXGE_TRACE,
2672                 "%s: %s:%d", dev->name, __func__, __LINE__);
2673
2674         vdev = (struct vxgedev *)netdev_priv(dev);
2675         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2676         function_mode = vdev->config.device_hw_info.function_mode;
2677
2678         /* make sure you have link off by default every time Nic is
2679          * initialized */
2680         netif_carrier_off(dev);
2681
2682         /* Check for another device already opn with INTA */
2683         if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
2684                 test_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open)) {
2685                 ret = -EPERM;
2686                 goto out0;
2687         }
2688
2689         /* Open VPATHs */
2690         status = vxge_open_vpaths(vdev);
2691         if (status != VXGE_HW_OK) {
2692                 vxge_debug_init(VXGE_ERR,
2693                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2694                 ret = -EPERM;
2695                 goto out0;
2696         }
2697
2698         vdev->mtu = dev->mtu;
2699
2700         status = vxge_add_isr(vdev);
2701         if (status != VXGE_HW_OK) {
2702                 vxge_debug_init(VXGE_ERR,
2703                         "%s: fatal: ISR add failed", dev->name);
2704                 ret = -EPERM;
2705                 goto out1;
2706         }
2707
2708
2709         if (vdev->config.intr_type != MSI_X) {
2710                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2711                         vdev->config.napi_weight);
2712                 napi_enable(&vdev->napi);
2713         } else {
2714                 for (i = 0; i < vdev->no_of_vpath; i++) {
2715                         netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2716                             vxge_poll_msix, vdev->config.napi_weight);
2717                         napi_enable(&vdev->vpaths[i].ring.napi);
2718                 }
2719         }
2720
2721         /* configure RTH */
2722         if (vdev->config.rth_steering) {
2723                 status = vxge_rth_configure(vdev);
2724                 if (status != VXGE_HW_OK) {
2725                         vxge_debug_init(VXGE_ERR,
2726                                 "%s: fatal: RTH configuration failed",
2727                                 dev->name);
2728                         ret = -EPERM;
2729                         goto out2;
2730                 }
2731         }
2732
2733         for (i = 0; i < vdev->no_of_vpath; i++) {
2734                 /* set initial mtu before enabling the device */
2735                 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2736                                                 vdev->mtu);
2737                 if (status != VXGE_HW_OK) {
2738                         vxge_debug_init(VXGE_ERR,
2739                                 "%s: fatal: can not set new MTU", dev->name);
2740                         ret = -EPERM;
2741                         goto out2;
2742                 }
2743         }
2744
2745         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2746         vxge_debug_init(vdev->level_trace,
2747                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2748         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2749
2750         /* Reprogram the DA table with populated mac addresses */
2751         for (i = 0; i < vdev->no_of_vpath; i++) {
2752                 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2753                 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2754         }
2755
2756         /* Enable vpath to sniff all unicast/multicast traffic that not
2757          * addressed to them. We allow promiscous mode for PF only
2758          */
2759
2760         val64 = 0;
2761         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2762                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2763
2764         vxge_hw_mgmt_reg_write(vdev->devh,
2765                 vxge_hw_mgmt_reg_type_mrpcim,
2766                 0,
2767                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2768                         rxmac_authorize_all_addr),
2769                 val64);
2770
2771         vxge_hw_mgmt_reg_write(vdev->devh,
2772                 vxge_hw_mgmt_reg_type_mrpcim,
2773                 0,
2774                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2775                         rxmac_authorize_all_vid),
2776                 val64);
2777
2778         vxge_set_multicast(dev);
2779
2780         /* Enabling Bcast and mcast for all vpath */
2781         for (i = 0; i < vdev->no_of_vpath; i++) {
2782                 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2783                 if (status != VXGE_HW_OK)
2784                         vxge_debug_init(VXGE_ERR,
2785                                 "%s : Can not enable bcast for vpath "
2786                                 "id %d", dev->name, i);
2787                 if (vdev->config.addr_learn_en) {
2788                         status =
2789                             vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2790                         if (status != VXGE_HW_OK)
2791                                 vxge_debug_init(VXGE_ERR,
2792                                         "%s : Can not enable mcast for vpath "
2793                                         "id %d", dev->name, i);
2794                 }
2795         }
2796
2797         vxge_hw_device_setpause_data(vdev->devh, 0,
2798                 vdev->config.tx_pause_enable,
2799                 vdev->config.rx_pause_enable);
2800
2801         if (vdev->vp_reset_timer.function == NULL)
2802                 vxge_os_timer(vdev->vp_reset_timer,
2803                         vxge_poll_vp_reset, vdev, (HZ/2));
2804
2805         if (vdev->vp_lockup_timer.function == NULL)
2806                 vxge_os_timer(vdev->vp_lockup_timer,
2807                         vxge_poll_vp_lockup, vdev, (HZ/2));
2808
2809         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2810
2811         smp_wmb();
2812
2813         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2814                 netif_carrier_on(vdev->ndev);
2815                 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2816                 vdev->stats.link_up++;
2817         }
2818
2819         vxge_hw_device_intr_enable(vdev->devh);
2820
2821         smp_wmb();
2822
2823         for (i = 0; i < vdev->no_of_vpath; i++) {
2824                 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2825                 smp_wmb();
2826                 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2827         }
2828
2829         vxge_start_all_tx_queue(vdev);
2830         goto out0;
2831
2832 out2:
2833         vxge_rem_isr(vdev);
2834
2835         /* Disable napi */
2836         if (vdev->config.intr_type != MSI_X)
2837                 napi_disable(&vdev->napi);
2838         else {
2839                 for (i = 0; i < vdev->no_of_vpath; i++)
2840                         napi_disable(&vdev->vpaths[i].ring.napi);
2841         }
2842
2843 out1:
2844         vxge_close_vpaths(vdev, 0);
2845 out0:
2846         vxge_debug_entryexit(VXGE_TRACE,
2847                                 "%s: %s:%d  Exiting...",
2848                                 dev->name, __func__, __LINE__);
2849         return ret;
2850 }
2851
2852 /* Loop throught the mac address list and delete all the entries */
2853 void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2854 {
2855
2856         struct list_head *entry, *next;
2857         if (list_empty(&vpath->mac_addr_list))
2858                 return;
2859
2860         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2861                 list_del(entry);
2862                 kfree((struct vxge_mac_addrs *)entry);
2863         }
2864 }
2865
2866 static void vxge_napi_del_all(struct vxgedev *vdev)
2867 {
2868         int i;
2869         if (vdev->config.intr_type != MSI_X)
2870                 netif_napi_del(&vdev->napi);
2871         else {
2872                 for (i = 0; i < vdev->no_of_vpath; i++)
2873                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2874         }
2875         return;
2876 }
2877
2878 int do_vxge_close(struct net_device *dev, int do_io)
2879 {
2880         enum vxge_hw_status status;
2881         struct vxgedev *vdev;
2882         struct __vxge_hw_device *hldev;
2883         int i;
2884         u64 val64, vpath_vector;
2885         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2886                 dev->name, __func__, __LINE__);
2887
2888         vdev = (struct vxgedev *)netdev_priv(dev);
2889         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2890
2891         /* If vxge_handle_crit_err task is executing,
2892          * wait till it completes. */
2893         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2894                 msleep(50);
2895
2896         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2897         if (do_io) {
2898                 /* Put the vpath back in normal mode */
2899                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2900                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2901                                 vxge_hw_mgmt_reg_type_mrpcim,
2902                                 0,
2903                                 (ulong)offsetof(
2904                                         struct vxge_hw_mrpcim_reg,
2905                                         rts_mgr_cbasin_cfg),
2906                                 &val64);
2907
2908                 if (status == VXGE_HW_OK) {
2909                         val64 &= ~vpath_vector;
2910                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2911                                         vxge_hw_mgmt_reg_type_mrpcim,
2912                                         0,
2913                                         (ulong)offsetof(
2914                                                 struct vxge_hw_mrpcim_reg,
2915                                                 rts_mgr_cbasin_cfg),
2916                                         val64);
2917                 }
2918
2919                 /* Remove the function 0 from promiscous mode */
2920                 vxge_hw_mgmt_reg_write(vdev->devh,
2921                         vxge_hw_mgmt_reg_type_mrpcim,
2922                         0,
2923                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2924                                 rxmac_authorize_all_addr),
2925                         0);
2926
2927                 vxge_hw_mgmt_reg_write(vdev->devh,
2928                         vxge_hw_mgmt_reg_type_mrpcim,
2929                         0,
2930                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2931                                 rxmac_authorize_all_vid),
2932                         0);
2933
2934                 smp_wmb();
2935         }
2936         del_timer_sync(&vdev->vp_lockup_timer);
2937
2938         del_timer_sync(&vdev->vp_reset_timer);
2939
2940         /* Disable napi */
2941         if (vdev->config.intr_type != MSI_X)
2942                 napi_disable(&vdev->napi);
2943         else {
2944                 for (i = 0; i < vdev->no_of_vpath; i++)
2945                         napi_disable(&vdev->vpaths[i].ring.napi);
2946         }
2947
2948         netif_carrier_off(vdev->ndev);
2949         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2950         vxge_stop_all_tx_queue(vdev);
2951
2952         /* Note that at this point xmit() is stopped by upper layer */
2953         if (do_io)
2954                 vxge_hw_device_intr_disable(vdev->devh);
2955
2956         mdelay(1000);
2957
2958         vxge_rem_isr(vdev);
2959
2960         vxge_napi_del_all(vdev);
2961
2962         if (do_io)
2963                 vxge_reset_all_vpaths(vdev);
2964
2965         vxge_close_vpaths(vdev, 0);
2966
2967         vxge_debug_entryexit(VXGE_TRACE,
2968                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2969
2970         clear_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open);
2971         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2972
2973         return 0;
2974 }
2975
2976 /**
2977  * vxge_close
2978  * @dev: device pointer.
2979  *
2980  * This is the stop entry point of the driver. It needs to undo exactly
2981  * whatever was done by the open entry point, thus it's usually referred to
2982  * as the close function.Among other things this function mainly stops the
2983  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2984  * Return value: '0' on success and an appropriate (-)ve integer as
2985  * defined in errno.h file on failure.
2986  */
2987 int
2988 vxge_close(struct net_device *dev)
2989 {
2990         do_vxge_close(dev, 1);
2991         return 0;
2992 }
2993
2994 /**
2995  * vxge_change_mtu
2996  * @dev: net device pointer.
2997  * @new_mtu :the new MTU size for the device.
2998  *
2999  * A driver entry point to change MTU size for the device. Before changing
3000  * the MTU the device must be stopped.
3001  */
3002 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3003 {
3004         struct vxgedev *vdev = netdev_priv(dev);
3005
3006         vxge_debug_entryexit(vdev->level_trace,
3007                 "%s:%d", __func__, __LINE__);
3008         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
3009                 vxge_debug_init(vdev->level_err,
3010                         "%s: mtu size is invalid", dev->name);
3011                 return -EPERM;
3012         }
3013
3014         /* check if device is down already */
3015         if (unlikely(!is_vxge_card_up(vdev))) {
3016                 /* just store new value, will use later on open() */
3017                 dev->mtu = new_mtu;
3018                 vxge_debug_init(vdev->level_err,
3019                         "%s", "device is down on MTU change");
3020                 return 0;
3021         }
3022
3023         vxge_debug_init(vdev->level_trace,
3024                 "trying to apply new MTU %d", new_mtu);
3025
3026         if (vxge_close(dev))
3027                 return -EIO;
3028
3029         dev->mtu = new_mtu;
3030         vdev->mtu = new_mtu;
3031
3032         if (vxge_open(dev))
3033                 return -EIO;
3034
3035         vxge_debug_init(vdev->level_trace,
3036                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3037
3038         vxge_debug_entryexit(vdev->level_trace,
3039                 "%s:%d  Exiting...", __func__, __LINE__);
3040
3041         return 0;
3042 }
3043
3044 /**
3045  * vxge_get_stats
3046  * @dev: pointer to the device structure
3047  *
3048  * Updates the device statistics structure. This function updates the device
3049  * statistics structure in the net_device structure and returns a pointer
3050  * to the same.
3051  */
3052 static struct net_device_stats *
3053 vxge_get_stats(struct net_device *dev)
3054 {
3055         struct vxgedev *vdev;
3056         struct net_device_stats *net_stats;
3057         int k;
3058
3059         vdev = netdev_priv(dev);
3060
3061         net_stats = &vdev->stats.net_stats;
3062
3063         memset(net_stats, 0, sizeof(struct net_device_stats));
3064
3065         for (k = 0; k < vdev->no_of_vpath; k++) {
3066                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3067                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3068                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3069                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3070                 net_stats->rx_dropped +=
3071                         vdev->vpaths[k].ring.stats.rx_dropped;
3072
3073                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3074                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3075                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3076         }
3077
3078         return net_stats;
3079 }
3080
3081 /**
3082  * vxge_ioctl
3083  * @dev: Device pointer.
3084  * @ifr: An IOCTL specific structure, that can contain a pointer to
3085  *       a proprietary structure used to pass information to the driver.
3086  * @cmd: This is used to distinguish between the different commands that
3087  *       can be passed to the IOCTL functions.
3088  *
3089  * Entry point for the Ioctl.
3090  */
3091 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3092 {
3093         return -EOPNOTSUPP;
3094 }
3095
3096 /**
3097  * vxge_tx_watchdog
3098  * @dev: pointer to net device structure
3099  *
3100  * Watchdog for transmit side.
3101  * This function is triggered if the Tx Queue is stopped
3102  * for a pre-defined amount of time when the Interface is still up.
3103  */
3104 static void
3105 vxge_tx_watchdog(struct net_device *dev)
3106 {
3107         struct vxgedev *vdev;
3108
3109         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3110
3111         vdev = (struct vxgedev *)netdev_priv(dev);
3112
3113         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3114
3115         vxge_reset(vdev);
3116         vxge_debug_entryexit(VXGE_TRACE,
3117                 "%s:%d  Exiting...", __func__, __LINE__);
3118 }
3119
3120 /**
3121  * vxge_vlan_rx_register
3122  * @dev: net device pointer.
3123  * @grp: vlan group
3124  *
3125  * Vlan group registration
3126  */
3127 static void
3128 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3129 {
3130         struct vxgedev *vdev;
3131         struct vxge_vpath *vpath;
3132         int vp;
3133         u64 vid;
3134         enum vxge_hw_status status;
3135         int i;
3136
3137         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3138
3139         vdev = (struct vxgedev *)netdev_priv(dev);
3140
3141         vpath = &vdev->vpaths[0];
3142         if ((NULL == grp) && (vpath->is_open)) {
3143                 /* Get the first vlan */
3144                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3145
3146                 while (status == VXGE_HW_OK) {
3147
3148                         /* Delete this vlan from the vid table */
3149                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3150                                 vpath = &vdev->vpaths[vp];
3151                                 if (!vpath->is_open)
3152                                         continue;
3153
3154                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3155                         }
3156
3157                         /* Get the next vlan to be deleted */
3158                         vpath = &vdev->vpaths[0];
3159                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3160                 }
3161         }
3162
3163         vdev->vlgrp = grp;
3164
3165         for (i = 0; i < vdev->no_of_vpath; i++) {
3166                 if (vdev->vpaths[i].is_configured)
3167                         vdev->vpaths[i].ring.vlgrp = grp;
3168         }
3169
3170         vxge_debug_entryexit(VXGE_TRACE,
3171                 "%s:%d  Exiting...", __func__, __LINE__);
3172 }
3173
3174 /**
3175  * vxge_vlan_rx_add_vid
3176  * @dev: net device pointer.
3177  * @vid: vid
3178  *
3179  * Add the vlan id to the devices vlan id table
3180  */
3181 static void
3182 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3183 {
3184         struct vxgedev *vdev;
3185         struct vxge_vpath *vpath;
3186         int vp_id;
3187
3188         vdev = (struct vxgedev *)netdev_priv(dev);
3189
3190         /* Add these vlan to the vid table */
3191         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3192                 vpath = &vdev->vpaths[vp_id];
3193                 if (!vpath->is_open)
3194                         continue;
3195                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3196         }
3197 }
3198
3199 /**
3200  * vxge_vlan_rx_add_vid
3201  * @dev: net device pointer.
3202  * @vid: vid
3203  *
3204  * Remove the vlan id from the device's vlan id table
3205  */
3206 static void
3207 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3208 {
3209         struct vxgedev *vdev;
3210         struct vxge_vpath *vpath;
3211         int vp_id;
3212
3213         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3214
3215         vdev = (struct vxgedev *)netdev_priv(dev);
3216
3217         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3218
3219         /* Delete this vlan from the vid table */
3220         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3221                 vpath = &vdev->vpaths[vp_id];
3222                 if (!vpath->is_open)
3223                         continue;
3224                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3225         }
3226         vxge_debug_entryexit(VXGE_TRACE,
3227                 "%s:%d  Exiting...", __func__, __LINE__);
3228 }
3229
3230 static const struct net_device_ops vxge_netdev_ops = {
3231         .ndo_open               = vxge_open,
3232         .ndo_stop               = vxge_close,
3233         .ndo_get_stats          = vxge_get_stats,
3234         .ndo_start_xmit         = vxge_xmit,
3235         .ndo_validate_addr      = eth_validate_addr,
3236         .ndo_set_multicast_list = vxge_set_multicast,
3237
3238         .ndo_do_ioctl           = vxge_ioctl,
3239
3240         .ndo_set_mac_address    = vxge_set_mac_addr,
3241         .ndo_change_mtu         = vxge_change_mtu,
3242         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3243         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3244         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3245
3246         .ndo_tx_timeout         = vxge_tx_watchdog,
3247 #ifdef CONFIG_NET_POLL_CONTROLLER
3248         .ndo_poll_controller    = vxge_netpoll,
3249 #endif
3250 };
3251
3252 int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3253                                    struct vxge_config *config,
3254                                    int high_dma, int no_of_vpath,
3255                                    struct vxgedev **vdev_out)
3256 {
3257         struct net_device *ndev;
3258         enum vxge_hw_status status = VXGE_HW_OK;
3259         struct vxgedev *vdev;
3260         int i, ret = 0, no_of_queue = 1;
3261         u64 stat;
3262
3263         *vdev_out = NULL;
3264         if (config->tx_steering_type == TX_MULTIQ_STEERING)
3265                 no_of_queue = no_of_vpath;
3266
3267         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3268                         no_of_queue);
3269         if (ndev == NULL) {
3270                 vxge_debug_init(
3271                         vxge_hw_device_trace_level_get(hldev),
3272                 "%s : device allocation failed", __func__);
3273                 ret = -ENODEV;
3274                 goto _out0;
3275         }
3276
3277         vxge_debug_entryexit(
3278                 vxge_hw_device_trace_level_get(hldev),
3279                 "%s: %s:%d  Entering...",
3280                 ndev->name, __func__, __LINE__);
3281
3282         vdev = netdev_priv(ndev);
3283         memset(vdev, 0, sizeof(struct vxgedev));
3284
3285         vdev->ndev = ndev;
3286         vdev->devh = hldev;
3287         vdev->pdev = hldev->pdev;
3288         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3289         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3290
3291         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3292
3293         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3294                                 NETIF_F_HW_VLAN_FILTER;
3295         /*  Driver entry points */
3296         ndev->irq = vdev->pdev->irq;
3297         ndev->base_addr = (unsigned long) hldev->bar0;
3298
3299         ndev->netdev_ops = &vxge_netdev_ops;
3300
3301         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3302
3303         initialize_ethtool_ops(ndev);
3304
3305         /* Allocate memory for vpath */
3306         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3307                                 no_of_vpath, GFP_KERNEL);
3308         if (!vdev->vpaths) {
3309                 vxge_debug_init(VXGE_ERR,
3310                         "%s: vpath memory allocation failed",
3311                         vdev->ndev->name);
3312                 ret = -ENODEV;
3313                 goto _out1;
3314         }
3315
3316         ndev->features |= NETIF_F_SG;
3317
3318         ndev->features |= NETIF_F_HW_CSUM;
3319         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3320                 "%s : checksuming enabled", __func__);
3321
3322         if (high_dma) {
3323                 ndev->features |= NETIF_F_HIGHDMA;
3324                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3325                         "%s : using High DMA", __func__);
3326         }
3327
3328         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3329
3330         if (vdev->config.gro_enable)
3331                 ndev->features |= NETIF_F_GRO;
3332
3333         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3334                 ndev->real_num_tx_queues = no_of_vpath;
3335
3336 #ifdef NETIF_F_LLTX
3337         ndev->features |= NETIF_F_LLTX;
3338 #endif
3339
3340         for (i = 0; i < no_of_vpath; i++)
3341                 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3342
3343         if (register_netdev(ndev)) {
3344                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3345                         "%s: %s : device registration failed!",
3346                         ndev->name, __func__);
3347                 ret = -ENODEV;
3348                 goto _out2;
3349         }
3350
3351         /*  Set the factory defined MAC address initially */
3352         ndev->addr_len = ETH_ALEN;
3353
3354         /* Make Link state as off at this point, when the Link change
3355          * interrupt comes the state will be automatically changed to
3356          * the right state.
3357          */
3358         netif_carrier_off(ndev);
3359
3360         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3361                 "%s: Ethernet device registered",
3362                 ndev->name);
3363
3364         *vdev_out = vdev;
3365
3366         /* Resetting the Device stats */
3367         status = vxge_hw_mrpcim_stats_access(
3368                                 hldev,
3369                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3370                                 0,
3371                                 0,
3372                                 &stat);
3373
3374         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3375                 vxge_debug_init(
3376                         vxge_hw_device_trace_level_get(hldev),
3377                         "%s: device stats clear returns"
3378                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3379
3380         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3381                 "%s: %s:%d  Exiting...",
3382                 ndev->name, __func__, __LINE__);
3383
3384         return ret;
3385 _out2:
3386         kfree(vdev->vpaths);
3387 _out1:
3388         free_netdev(ndev);
3389 _out0:
3390         return ret;
3391 }
3392
3393 /*
3394  * vxge_device_unregister
3395  *
3396  * This function will unregister and free network device
3397  */
3398 void
3399 vxge_device_unregister(struct __vxge_hw_device *hldev)
3400 {
3401         struct vxgedev *vdev;
3402         struct net_device *dev;
3403         char buf[IFNAMSIZ];
3404 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3405         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3406         u32 level_trace;
3407 #endif
3408
3409         dev = hldev->ndev;
3410         vdev = netdev_priv(dev);
3411 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3412         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3413         level_trace = vdev->level_trace;
3414 #endif
3415         vxge_debug_entryexit(level_trace,
3416                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3417
3418         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3419
3420         /* in 2.6 will call stop() if device is up */
3421         unregister_netdev(dev);
3422
3423         flush_scheduled_work();
3424
3425         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3426         vxge_debug_entryexit(level_trace,
3427                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3428 }
3429
3430 /*
3431  * vxge_callback_crit_err
3432  *
3433  * This function is called by the alarm handler in interrupt context.
3434  * Driver must analyze it based on the event type.
3435  */
3436 static void
3437 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3438                         enum vxge_hw_event type, u64 vp_id)
3439 {
3440         struct net_device *dev = hldev->ndev;
3441         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3442         int vpath_idx;
3443
3444         vxge_debug_entryexit(vdev->level_trace,
3445                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3446
3447         /* Note: This event type should be used for device wide
3448          * indications only - Serious errors, Slot freeze and critical errors
3449          */
3450         vdev->cric_err_event = type;
3451
3452         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3453                 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3454                         break;
3455
3456         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3457                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3458                         vxge_debug_init(VXGE_ERR,
3459                                 "%s: Slot is frozen", vdev->ndev->name);
3460                 } else if (type == VXGE_HW_EVENT_SERR) {
3461                         vxge_debug_init(VXGE_ERR,
3462                                 "%s: Encountered Serious Error",
3463                                 vdev->ndev->name);
3464                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3465                         vxge_debug_init(VXGE_ERR,
3466                                 "%s: Encountered Critical Error",
3467                                 vdev->ndev->name);
3468         }
3469
3470         if ((type == VXGE_HW_EVENT_SERR) ||
3471                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3472                 if (unlikely(vdev->exec_mode))
3473                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3474         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3475                 vxge_hw_device_mask_all(hldev);
3476                 if (unlikely(vdev->exec_mode))
3477                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3478         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3479                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3480
3481                 if (unlikely(vdev->exec_mode))
3482                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3483                 else {
3484                         /* check if this vpath is already set for reset */
3485                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3486
3487                                 /* disable interrupts for this vpath */
3488                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3489
3490                                 /* stop the queue for this vpath */
3491                                 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3492                                                         fifo);
3493                         }
3494                 }
3495         }
3496
3497         vxge_debug_entryexit(vdev->level_trace,
3498                 "%s: %s:%d  Exiting...",
3499                 vdev->ndev->name, __func__, __LINE__);
3500 }
3501
3502 static void verify_bandwidth(void)
3503 {
3504         int i, band_width, total = 0, equal_priority = 0;
3505
3506         /* 1. If user enters 0 for some fifo, give equal priority to all */
3507         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3508                 if (bw_percentage[i] == 0) {
3509                         equal_priority = 1;
3510                         break;
3511                 }
3512         }
3513
3514         if (!equal_priority) {
3515                 /* 2. If sum exceeds 100, give equal priority to all */
3516                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3517                         if (bw_percentage[i] == 0xFF)
3518                                 break;
3519
3520                         total += bw_percentage[i];
3521                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3522                                 equal_priority = 1;
3523                                 break;
3524                         }
3525                 }
3526         }
3527
3528         if (!equal_priority) {
3529                 /* Is all the bandwidth consumed? */
3530                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3531                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3532                                 /* Split rest of bw equally among next VPs*/
3533                                 band_width =
3534                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3535                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3536                                 if (band_width < 2) /* min of 2% */
3537                                         equal_priority = 1;
3538                                 else {
3539                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3540                                                 i++)
3541                                                 bw_percentage[i] =
3542                                                         band_width;
3543                                 }
3544                         }
3545                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3546                         equal_priority = 1;
3547         }
3548
3549         if (equal_priority) {
3550                 vxge_debug_init(VXGE_ERR,
3551                         "%s: Assigning equal bandwidth to all the vpaths",
3552                         VXGE_DRIVER_NAME);
3553                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3554                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3555                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3556                         bw_percentage[i] = bw_percentage[0];
3557         }
3558
3559         return;
3560 }
3561
3562 /*
3563  * Vpath configuration
3564  */
3565 static int __devinit vxge_config_vpaths(
3566                         struct vxge_hw_device_config *device_config,
3567                         u64 vpath_mask, struct vxge_config *config_param)
3568 {
3569         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3570         u32 txdl_size, txdl_per_memblock;
3571
3572         temp = driver_config->vpath_per_dev;
3573         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3574                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3575                 /* No more CPU. Return vpath number as zero.*/
3576                 if (driver_config->g_no_cpus == -1)
3577                         return 0;
3578
3579                 if (!driver_config->g_no_cpus)
3580                         driver_config->g_no_cpus = num_online_cpus();
3581
3582                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3583                 if (!driver_config->vpath_per_dev)
3584                         driver_config->vpath_per_dev = 1;
3585
3586                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3587                         if (!vxge_bVALn(vpath_mask, i, 1))
3588                                 continue;
3589                         else
3590                                 default_no_vpath++;
3591                 if (default_no_vpath < driver_config->vpath_per_dev)
3592                         driver_config->vpath_per_dev = default_no_vpath;
3593
3594                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3595                                 (driver_config->vpath_per_dev * 2);
3596                 if (driver_config->g_no_cpus <= 0)
3597                         driver_config->g_no_cpus = -1;
3598         }
3599
3600         if (driver_config->vpath_per_dev == 1) {
3601                 vxge_debug_ll_config(VXGE_TRACE,
3602                         "%s: Disable tx and rx steering, "
3603                         "as single vpath is configured", VXGE_DRIVER_NAME);
3604                 config_param->rth_steering = NO_STEERING;
3605                 config_param->tx_steering_type = NO_STEERING;
3606                 device_config->rth_en = 0;
3607         }
3608
3609         /* configure bandwidth */
3610         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3611                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3612
3613         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3614                 device_config->vp_config[i].vp_id = i;
3615                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3616                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3617                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3618                                 vxge_debug_ll_config(VXGE_TRACE,
3619                                         "%s: vpath: %d is not available",
3620                                         VXGE_DRIVER_NAME, i);
3621                                 continue;
3622                         } else {
3623                                 vxge_debug_ll_config(VXGE_TRACE,
3624                                         "%s: vpath: %d available",
3625                                         VXGE_DRIVER_NAME, i);
3626                                 no_of_vpaths++;
3627                         }
3628                 } else {
3629                         vxge_debug_ll_config(VXGE_TRACE,
3630                                 "%s: vpath: %d is not configured, "
3631                                 "max_config_vpath exceeded",
3632                                 VXGE_DRIVER_NAME, i);
3633                         break;
3634                 }
3635
3636                 /* Configure Tx fifo's */
3637                 device_config->vp_config[i].fifo.enable =
3638                                                 VXGE_HW_FIFO_ENABLE;
3639                 device_config->vp_config[i].fifo.max_frags =
3640                                 MAX_SKB_FRAGS;
3641                 device_config->vp_config[i].fifo.memblock_size =
3642                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3643
3644                 txdl_size = MAX_SKB_FRAGS * sizeof(struct vxge_hw_fifo_txd);
3645                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3646
3647                 device_config->vp_config[i].fifo.fifo_blocks =
3648                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3649
3650                 device_config->vp_config[i].fifo.intr =
3651                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3652
3653                 /* Configure tti properties */
3654                 device_config->vp_config[i].tti.intr_enable =
3655                                         VXGE_HW_TIM_INTR_ENABLE;
3656
3657                 device_config->vp_config[i].tti.btimer_val =
3658                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3659
3660                 device_config->vp_config[i].tti.timer_ac_en =
3661                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3662
3663                 /* For msi-x with napi (each vector
3664                 has a handler of its own) -
3665                 Set CI to OFF for all vpaths */
3666                 device_config->vp_config[i].tti.timer_ci_en =
3667                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3668
3669                 device_config->vp_config[i].tti.timer_ri_en =
3670                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3671
3672                 device_config->vp_config[i].tti.util_sel =
3673                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3674
3675                 device_config->vp_config[i].tti.ltimer_val =
3676                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3677
3678                 device_config->vp_config[i].tti.rtimer_val =
3679                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3680
3681                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3682                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3683                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3684                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3685                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3686                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3687                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3688
3689                 /* Configure Rx rings */
3690                 device_config->vp_config[i].ring.enable  =
3691                                                 VXGE_HW_RING_ENABLE;
3692
3693                 device_config->vp_config[i].ring.ring_blocks  =
3694                                                 VXGE_HW_DEF_RING_BLOCKS;
3695                 device_config->vp_config[i].ring.buffer_mode =
3696                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3697                 device_config->vp_config[i].ring.rxds_limit  =
3698                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3699                 device_config->vp_config[i].ring.scatter_mode =
3700                                         VXGE_HW_RING_SCATTER_MODE_A;
3701
3702                 /* Configure rti properties */
3703                 device_config->vp_config[i].rti.intr_enable =
3704                                         VXGE_HW_TIM_INTR_ENABLE;
3705
3706                 device_config->vp_config[i].rti.btimer_val =
3707                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3708
3709                 device_config->vp_config[i].rti.timer_ac_en =
3710                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3711
3712                 device_config->vp_config[i].rti.timer_ci_en =
3713                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3714
3715                 device_config->vp_config[i].rti.timer_ri_en =
3716                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3717
3718                 device_config->vp_config[i].rti.util_sel =
3719                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3720
3721                 device_config->vp_config[i].rti.urange_a =
3722                                                 RTI_RX_URANGE_A;
3723                 device_config->vp_config[i].rti.urange_b =
3724                                                 RTI_RX_URANGE_B;
3725                 device_config->vp_config[i].rti.urange_c =
3726                                                 RTI_RX_URANGE_C;
3727                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3728                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3729                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3730                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3731
3732                 device_config->vp_config[i].rti.rtimer_val =
3733                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3734
3735                 device_config->vp_config[i].rti.ltimer_val =
3736                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3737
3738                 device_config->vp_config[i].rpa_strip_vlan_tag =
3739                         vlan_tag_strip;
3740         }
3741
3742         driver_config->vpath_per_dev = temp;
3743         return no_of_vpaths;
3744 }
3745
3746 /* initialize device configuratrions */
3747 static void __devinit vxge_device_config_init(
3748                                 struct vxge_hw_device_config *device_config,
3749                                 int *intr_type)
3750 {
3751         /* Used for CQRQ/SRQ. */
3752         device_config->dma_blockpool_initial =
3753                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3754
3755         device_config->dma_blockpool_max =
3756                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3757
3758         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3759                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3760
3761 #ifndef CONFIG_PCI_MSI
3762         vxge_debug_init(VXGE_ERR,
3763                 "%s: This Kernel does not support "
3764                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3765         *intr_type = INTA;
3766 #endif
3767
3768         /* Configure whether MSI-X or IRQL. */
3769         switch (*intr_type) {
3770         case INTA:
3771                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3772                 break;
3773
3774         case MSI_X:
3775                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3776                 break;
3777         }
3778         /* Timer period between device poll */
3779         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3780
3781         /* Configure mac based steering. */
3782         device_config->rts_mac_en = addr_learn_en;
3783
3784         /* Configure Vpaths */
3785         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3786
3787         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3788                         __func__);
3789         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3790                         device_config->dma_blockpool_initial);
3791         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3792                         device_config->dma_blockpool_max);
3793         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3794                         device_config->intr_mode);
3795         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3796                         device_config->device_poll_millis);
3797         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3798                         device_config->rts_mac_en);
3799         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3800                         device_config->rth_en);
3801         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3802                         device_config->rth_it_type);
3803 }
3804
3805 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3806 {
3807         int i;
3808
3809         vxge_debug_init(VXGE_TRACE,
3810                 "%s: %d Vpath(s) opened",
3811                 vdev->ndev->name, vdev->no_of_vpath);
3812
3813         switch (vdev->config.intr_type) {
3814         case INTA:
3815                 vxge_debug_init(VXGE_TRACE,
3816                         "%s: Interrupt type INTA", vdev->ndev->name);
3817                 break;
3818
3819         case MSI_X:
3820                 vxge_debug_init(VXGE_TRACE,
3821                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3822                 break;
3823         }
3824
3825         if (vdev->config.rth_steering) {
3826                 vxge_debug_init(VXGE_TRACE,
3827                         "%s: RTH steering enabled for TCP_IPV4",
3828                         vdev->ndev->name);
3829         } else {
3830                 vxge_debug_init(VXGE_TRACE,
3831                         "%s: RTH steering disabled", vdev->ndev->name);
3832         }
3833
3834         switch (vdev->config.tx_steering_type) {
3835         case NO_STEERING:
3836                 vxge_debug_init(VXGE_TRACE,
3837                         "%s: Tx steering disabled", vdev->ndev->name);
3838                 break;
3839         case TX_PRIORITY_STEERING:
3840                 vxge_debug_init(VXGE_TRACE,
3841                         "%s: Unsupported tx steering option",
3842                         vdev->ndev->name);
3843                 vxge_debug_init(VXGE_TRACE,
3844                         "%s: Tx steering disabled", vdev->ndev->name);
3845                 vdev->config.tx_steering_type = 0;
3846                 break;
3847         case TX_VLAN_STEERING:
3848                 vxge_debug_init(VXGE_TRACE,
3849                         "%s: Unsupported tx steering option",
3850                         vdev->ndev->name);
3851                 vxge_debug_init(VXGE_TRACE,
3852                         "%s: Tx steering disabled", vdev->ndev->name);
3853                 vdev->config.tx_steering_type = 0;
3854                 break;
3855         case TX_MULTIQ_STEERING:
3856                 vxge_debug_init(VXGE_TRACE,
3857                         "%s: Tx multiqueue steering enabled",
3858                         vdev->ndev->name);
3859                 break;
3860         case TX_PORT_STEERING:
3861                 vxge_debug_init(VXGE_TRACE,
3862                         "%s: Tx port steering enabled",
3863                         vdev->ndev->name);
3864                 break;
3865         default:
3866                 vxge_debug_init(VXGE_ERR,
3867                         "%s: Unsupported tx steering type",
3868                         vdev->ndev->name);
3869                 vxge_debug_init(VXGE_TRACE,
3870                         "%s: Tx steering disabled", vdev->ndev->name);
3871                 vdev->config.tx_steering_type = 0;
3872         }
3873
3874         if (vdev->config.gro_enable) {
3875                 vxge_debug_init(VXGE_ERR,
3876                         "%s: Generic receive offload enabled",
3877                         vdev->ndev->name);
3878         } else
3879                 vxge_debug_init(VXGE_TRACE,
3880                         "%s: Generic receive offload disabled",
3881                         vdev->ndev->name);
3882
3883         if (vdev->config.addr_learn_en)
3884                 vxge_debug_init(VXGE_TRACE,
3885                         "%s: MAC Address learning enabled", vdev->ndev->name);
3886
3887         vxge_debug_init(VXGE_TRACE,
3888                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3889
3890         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3891                 if (!vxge_bVALn(vpath_mask, i, 1))
3892                         continue;
3893                 vxge_debug_ll_config(VXGE_TRACE,
3894                         "%s: MTU size - %d", vdev->ndev->name,
3895                         ((struct __vxge_hw_device  *)(vdev->devh))->
3896                                 config.vp_config[i].mtu);
3897                 vxge_debug_init(VXGE_TRACE,
3898                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3899                         ((struct __vxge_hw_device  *)(vdev->devh))->
3900                                 config.vp_config[i].rpa_strip_vlan_tag
3901                         ? "Enabled" : "Disabled");
3902                 vxge_debug_init(VXGE_TRACE,
3903                         "%s: Ring blocks : %d", vdev->ndev->name,
3904                         ((struct __vxge_hw_device  *)(vdev->devh))->
3905                                 config.vp_config[i].ring.ring_blocks);
3906                 vxge_debug_init(VXGE_TRACE,
3907                         "%s: Fifo blocks : %d", vdev->ndev->name,
3908                         ((struct __vxge_hw_device  *)(vdev->devh))->
3909                                 config.vp_config[i].fifo.fifo_blocks);
3910                 vxge_debug_ll_config(VXGE_TRACE,
3911                         "%s: Max frags : %d", vdev->ndev->name,
3912                         ((struct __vxge_hw_device  *)(vdev->devh))->
3913                                 config.vp_config[i].fifo.max_frags);
3914                 break;
3915         }
3916 }
3917
3918 #ifdef CONFIG_PM
3919 /**
3920  * vxge_pm_suspend - vxge power management suspend entry point
3921  *
3922  */
3923 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3924 {
3925         return -ENOSYS;
3926 }
3927 /**
3928  * vxge_pm_resume - vxge power management resume entry point
3929  *
3930  */
3931 static int vxge_pm_resume(struct pci_dev *pdev)
3932 {
3933         return -ENOSYS;
3934 }
3935
3936 #endif
3937
3938 /**
3939  * vxge_io_error_detected - called when PCI error is detected
3940  * @pdev: Pointer to PCI device
3941  * @state: The current pci connection state
3942  *
3943  * This function is called after a PCI bus error affecting
3944  * this device has been detected.
3945  */
3946 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3947                                                 pci_channel_state_t state)
3948 {
3949         struct __vxge_hw_device  *hldev =
3950                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3951         struct net_device *netdev = hldev->ndev;
3952
3953         netif_device_detach(netdev);
3954
3955         if (netif_running(netdev)) {
3956                 /* Bring down the card, while avoiding PCI I/O */
3957                 do_vxge_close(netdev, 0);
3958         }
3959
3960         pci_disable_device(pdev);
3961
3962         return PCI_ERS_RESULT_NEED_RESET;
3963 }
3964
3965 /**
3966  * vxge_io_slot_reset - called after the pci bus has been reset.
3967  * @pdev: Pointer to PCI device
3968  *
3969  * Restart the card from scratch, as if from a cold-boot.
3970  * At this point, the card has exprienced a hard reset,
3971  * followed by fixups by BIOS, and has its config space
3972  * set up identically to what it was at cold boot.
3973  */
3974 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3975 {
3976         struct __vxge_hw_device  *hldev =
3977                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3978         struct net_device *netdev = hldev->ndev;
3979
3980         struct vxgedev *vdev = netdev_priv(netdev);
3981
3982         if (pci_enable_device(pdev)) {
3983                 printk(KERN_ERR "%s: "
3984                         "Cannot re-enable device after reset\n",
3985                         VXGE_DRIVER_NAME);
3986                 return PCI_ERS_RESULT_DISCONNECT;
3987         }
3988
3989         pci_set_master(pdev);
3990         vxge_reset(vdev);
3991
3992         return PCI_ERS_RESULT_RECOVERED;
3993 }
3994
3995 /**
3996  * vxge_io_resume - called when traffic can start flowing again.
3997  * @pdev: Pointer to PCI device
3998  *
3999  * This callback is called when the error recovery driver tells
4000  * us that its OK to resume normal operation.
4001  */
4002 static void vxge_io_resume(struct pci_dev *pdev)
4003 {
4004         struct __vxge_hw_device  *hldev =
4005                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4006         struct net_device *netdev = hldev->ndev;
4007
4008         if (netif_running(netdev)) {
4009                 if (vxge_open(netdev)) {
4010                         printk(KERN_ERR "%s: "
4011                                 "Can't bring device back up after reset\n",
4012                                 VXGE_DRIVER_NAME);
4013                         return;
4014                 }
4015         }
4016
4017         netif_device_attach(netdev);
4018 }
4019
4020 /**
4021  * vxge_probe
4022  * @pdev : structure containing the PCI related information of the device.
4023  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4024  * Description:
4025  * This function is called when a new PCI device gets detected and initializes
4026  * it.
4027  * Return value:
4028  * returns 0 on success and negative on failure.
4029  *
4030  */
4031 static int __devinit
4032 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4033 {
4034         struct __vxge_hw_device  *hldev;
4035         enum vxge_hw_status status;
4036         int ret;
4037         int high_dma = 0;
4038         u64 vpath_mask = 0;
4039         struct vxgedev *vdev;
4040         struct vxge_config ll_config;
4041         struct vxge_hw_device_config *device_config = NULL;
4042         struct vxge_hw_device_attr attr;
4043         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4044         u8 *macaddr;
4045         struct vxge_mac_addrs *entry;
4046         static int bus = -1, device = -1;
4047         u8 new_device = 0;
4048
4049         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4050         attr.pdev = pdev;
4051
4052         if (bus != pdev->bus->number)
4053                 new_device = 1;
4054         if (device != PCI_SLOT(pdev->devfn))
4055                 new_device = 1;
4056
4057         bus = pdev->bus->number;
4058         device = PCI_SLOT(pdev->devfn);
4059
4060         if (new_device) {
4061                 if (driver_config->config_dev_cnt &&
4062                    (driver_config->config_dev_cnt !=
4063                         driver_config->total_dev_cnt))
4064                         vxge_debug_init(VXGE_ERR,
4065                                 "%s: Configured %d of %d devices",
4066                                 VXGE_DRIVER_NAME,
4067                                 driver_config->config_dev_cnt,
4068                                 driver_config->total_dev_cnt);
4069                 driver_config->config_dev_cnt = 0;
4070                 driver_config->total_dev_cnt = 0;
4071                 driver_config->g_no_cpus = 0;
4072                 driver_config->vpath_per_dev = max_config_vpath;
4073         }
4074
4075         driver_config->total_dev_cnt++;
4076         if (++driver_config->config_dev_cnt > max_config_dev) {
4077                 ret = 0;
4078                 goto _exit0;
4079         }
4080
4081         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4082                 GFP_KERNEL);
4083         if (!device_config) {
4084                 ret = -ENOMEM;
4085                 vxge_debug_init(VXGE_ERR,
4086                         "device_config : malloc failed %s %d",
4087                         __FILE__, __LINE__);
4088                 goto _exit0;
4089         }
4090
4091         memset(&ll_config, 0, sizeof(struct vxge_config));
4092         ll_config.tx_steering_type = TX_MULTIQ_STEERING;
4093         ll_config.intr_type = MSI_X;
4094         ll_config.napi_weight = NEW_NAPI_WEIGHT;
4095         ll_config.rth_steering = RTH_STEERING;
4096
4097         /* get the default configuration parameters */
4098         vxge_hw_device_config_default_get(device_config);
4099
4100         /* initialize configuration parameters */
4101         vxge_device_config_init(device_config, &ll_config.intr_type);
4102
4103         ret = pci_enable_device(pdev);
4104         if (ret) {
4105                 vxge_debug_init(VXGE_ERR,
4106                         "%s : can not enable PCI device", __func__);
4107                 goto _exit0;
4108         }
4109
4110         if (!pci_set_dma_mask(pdev, 0xffffffffffffffffULL)) {
4111                 vxge_debug_ll_config(VXGE_TRACE,
4112                         "%s : using 64bit DMA", __func__);
4113
4114                 high_dma = 1;
4115
4116                 if (pci_set_consistent_dma_mask(pdev,
4117                                                 0xffffffffffffffffULL)) {
4118                         vxge_debug_init(VXGE_ERR,
4119                                 "%s : unable to obtain 64bit DMA for "
4120                                 "consistent allocations", __func__);
4121                         ret = -ENOMEM;
4122                         goto _exit1;
4123                 }
4124         } else if (!pci_set_dma_mask(pdev, 0xffffffffUL)) {
4125                 vxge_debug_ll_config(VXGE_TRACE,
4126                         "%s : using 32bit DMA", __func__);
4127         } else {
4128                 ret = -ENOMEM;
4129                 goto _exit1;
4130         }
4131
4132         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4133                 vxge_debug_init(VXGE_ERR,
4134                         "%s : request regions failed", __func__);
4135                 ret = -ENODEV;
4136                 goto _exit1;
4137         }
4138
4139         pci_set_master(pdev);
4140
4141         attr.bar0 = pci_ioremap_bar(pdev, 0);
4142         if (!attr.bar0) {
4143                 vxge_debug_init(VXGE_ERR,
4144                         "%s : cannot remap io memory bar0", __func__);
4145                 ret = -ENODEV;
4146                 goto _exit2;
4147         }
4148         vxge_debug_ll_config(VXGE_TRACE,
4149                 "pci ioremap bar0: %p:0x%llx",
4150                 attr.bar0,
4151                 (unsigned long long)pci_resource_start(pdev, 0));
4152
4153         attr.bar1 = pci_ioremap_bar(pdev, 2);
4154         if (!attr.bar1) {
4155                 vxge_debug_init(VXGE_ERR,
4156                         "%s : cannot remap io memory bar2", __func__);
4157                 ret = -ENODEV;
4158                 goto _exit3;
4159         }
4160         vxge_debug_ll_config(VXGE_TRACE,
4161                 "pci ioremap bar1: %p:0x%llx",
4162                 attr.bar1,
4163                 (unsigned long long)pci_resource_start(pdev, 2));
4164
4165         status = vxge_hw_device_hw_info_get(attr.bar0,
4166                         &ll_config.device_hw_info);
4167         if (status != VXGE_HW_OK) {
4168                 vxge_debug_init(VXGE_ERR,
4169                         "%s: Reading of hardware info failed."
4170                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4171                 ret = -EINVAL;
4172                 goto _exit4;
4173         }
4174
4175         if (ll_config.device_hw_info.fw_version.major !=
4176                 VXGE_DRIVER_VERSION_MAJOR) {
4177                 vxge_debug_init(VXGE_ERR,
4178                         "FW Ver.(maj): %d not driver's expected version: %d",
4179                         ll_config.device_hw_info.fw_version.major,
4180                         VXGE_DRIVER_VERSION_MAJOR);
4181                 ret = -EINVAL;
4182                 goto _exit4;
4183         }
4184
4185         vpath_mask = ll_config.device_hw_info.vpath_mask;
4186         if (vpath_mask == 0) {
4187                 vxge_debug_ll_config(VXGE_TRACE,
4188                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4189                 ret = -EINVAL;
4190                 goto _exit4;
4191         }
4192
4193         vxge_debug_ll_config(VXGE_TRACE,
4194                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4195                 (unsigned long long)vpath_mask);
4196
4197         /* Check how many vpaths are available */
4198         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4199                 if (!((vpath_mask) & vxge_mBIT(i)))
4200                         continue;
4201                 max_vpath_supported++;
4202         }
4203
4204         /*
4205          * Configure vpaths and get driver configured number of vpaths
4206          * which is less than or equal to the maximum vpaths per function.
4207          */
4208         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
4209         if (!no_of_vpath) {
4210                 vxge_debug_ll_config(VXGE_ERR,
4211                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4212                 ret = 0;
4213                 goto _exit4;
4214         }
4215
4216         /* Setting driver callbacks */
4217         attr.uld_callbacks.link_up = vxge_callback_link_up;
4218         attr.uld_callbacks.link_down = vxge_callback_link_down;
4219         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4220
4221         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4222         if (status != VXGE_HW_OK) {
4223                 vxge_debug_init(VXGE_ERR,
4224                         "Failed to initialize device (%d)", status);
4225                         ret = -EINVAL;
4226                         goto _exit4;
4227         }
4228
4229         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4230
4231         /* set private device info */
4232         pci_set_drvdata(pdev, hldev);
4233
4234         ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4235         ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4236         ll_config.addr_learn_en = addr_learn_en;
4237         ll_config.rth_algorithm = RTH_ALG_JENKINS;
4238         ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4239         ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4240         ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4241         ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4242         ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4243         ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4244         ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
4245         ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4246         ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4247
4248         if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
4249                 &vdev)) {
4250                 ret = -EINVAL;
4251                 goto _exit5;
4252         }
4253
4254         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4255         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4256                 vxge_hw_device_trace_level_get(hldev));
4257
4258         /* set private HW device info */
4259         hldev->ndev = vdev->ndev;
4260         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4261         vdev->bar0 = attr.bar0;
4262         vdev->bar1 = attr.bar1;
4263         vdev->max_vpath_supported = max_vpath_supported;
4264         vdev->no_of_vpath = no_of_vpath;
4265
4266         /* Virtual Path count */
4267         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4268                 if (!vxge_bVALn(vpath_mask, i, 1))
4269                         continue;
4270                 if (j >= vdev->no_of_vpath)
4271                         break;
4272
4273                 vdev->vpaths[j].is_configured = 1;
4274                 vdev->vpaths[j].device_id = i;
4275                 vdev->vpaths[j].fifo.driver_id = j;
4276                 vdev->vpaths[j].ring.driver_id = j;
4277                 vdev->vpaths[j].vdev = vdev;
4278                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4279                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4280                                 (u8 *)ll_config.device_hw_info.mac_addrs[i],
4281                                 ETH_ALEN);
4282
4283                 /* Initialize the mac address list header */
4284                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4285
4286                 vdev->vpaths[j].mac_addr_cnt = 0;
4287                 vdev->vpaths[j].mcast_addr_cnt = 0;
4288                 j++;
4289         }
4290         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4291         vdev->max_config_port = max_config_port;
4292
4293         vdev->vlan_tag_strip = vlan_tag_strip;
4294
4295         /* map the hashing selector table to the configured vpaths */
4296         for (i = 0; i < vdev->no_of_vpath; i++)
4297                 vdev->vpath_selector[i] = vpath_selector[i];
4298
4299         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4300
4301         ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4302         ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4303         ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4304
4305         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4306                 vdev->ndev->name, ll_config.device_hw_info.serial_number);
4307
4308         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4309                 vdev->ndev->name, ll_config.device_hw_info.part_number);
4310
4311         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4312                 vdev->ndev->name, ll_config.device_hw_info.product_desc);
4313
4314         vxge_debug_init(VXGE_TRACE,
4315                 "%s: MAC ADDR: %02X:%02X:%02X:%02X:%02X:%02X",
4316                 vdev->ndev->name, macaddr[0], macaddr[1], macaddr[2],
4317                 macaddr[3], macaddr[4], macaddr[5]);
4318
4319         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4320                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4321
4322         vxge_debug_init(VXGE_TRACE,
4323                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4324                 ll_config.device_hw_info.fw_version.version,
4325                 ll_config.device_hw_info.fw_date.date);
4326
4327         vxge_print_parm(vdev, vpath_mask);
4328
4329         /* Store the fw version for ethttool option */
4330         strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
4331         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4332         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4333
4334         /* Copy the station mac address to the list */
4335         for (i = 0; i < vdev->no_of_vpath; i++) {
4336                 entry = (struct vxge_mac_addrs *)
4337                                 kzalloc(sizeof(struct vxge_mac_addrs),
4338                                         GFP_KERNEL);
4339                 if (NULL == entry) {
4340                         vxge_debug_init(VXGE_ERR,
4341                                 "%s: mac_addr_list : memory allocation failed",
4342                                 vdev->ndev->name);
4343                         ret = -EPERM;
4344                         goto _exit6;
4345                 }
4346                 macaddr = (u8 *)&entry->macaddr;
4347                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4348                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4349                 vdev->vpaths[i].mac_addr_cnt = 1;
4350         }
4351
4352         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4353                 vdev->ndev->name, __func__, __LINE__);
4354
4355         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4356         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4357                 vxge_hw_device_trace_level_get(hldev));
4358
4359         return 0;
4360
4361 _exit6:
4362         for (i = 0; i < vdev->no_of_vpath; i++)
4363                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4364
4365         vxge_device_unregister(hldev);
4366 _exit5:
4367         vxge_hw_device_terminate(hldev);
4368 _exit4:
4369         iounmap(attr.bar1);
4370 _exit3:
4371         iounmap(attr.bar0);
4372 _exit2:
4373         pci_release_regions(pdev);
4374 _exit1:
4375         pci_disable_device(pdev);
4376 _exit0:
4377         kfree(device_config);
4378         driver_config->config_dev_cnt--;
4379         pci_set_drvdata(pdev, NULL);
4380         return ret;
4381 }
4382
4383 /**
4384  * vxge_rem_nic - Free the PCI device
4385  * @pdev: structure containing the PCI related information of the device.
4386  * Description: This function is called by the Pci subsystem to release a
4387  * PCI device and free up all resource held up by the device.
4388  */
4389 static void __devexit
4390 vxge_remove(struct pci_dev *pdev)
4391 {
4392         struct __vxge_hw_device  *hldev;
4393         struct vxgedev *vdev = NULL;
4394         struct net_device *dev;
4395         int i = 0;
4396 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4397         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4398         u32 level_trace;
4399 #endif
4400
4401         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4402
4403         if (hldev == NULL)
4404                 return;
4405         dev = hldev->ndev;
4406         vdev = netdev_priv(dev);
4407
4408 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4409         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4410         level_trace = vdev->level_trace;
4411 #endif
4412         vxge_debug_entryexit(level_trace,
4413                 "%s:%d", __func__, __LINE__);
4414
4415         vxge_debug_init(level_trace,
4416                 "%s : removing PCI device...", __func__);
4417         vxge_device_unregister(hldev);
4418
4419         for (i = 0; i < vdev->no_of_vpath; i++) {
4420                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4421                 vdev->vpaths[i].mcast_addr_cnt = 0;
4422                 vdev->vpaths[i].mac_addr_cnt = 0;
4423         }
4424
4425         kfree(vdev->vpaths);
4426
4427         iounmap(vdev->bar0);
4428         iounmap(vdev->bar1);
4429
4430         /* we are safe to free it now */
4431         free_netdev(dev);
4432
4433         vxge_debug_init(level_trace,
4434                 "%s:%d  Device unregistered", __func__, __LINE__);
4435
4436         vxge_hw_device_terminate(hldev);
4437
4438         pci_disable_device(pdev);
4439         pci_release_regions(pdev);
4440         pci_set_drvdata(pdev, NULL);
4441         vxge_debug_entryexit(level_trace,
4442                 "%s:%d  Exiting...", __func__, __LINE__);
4443 }
4444
4445 static struct pci_error_handlers vxge_err_handler = {
4446         .error_detected = vxge_io_error_detected,
4447         .slot_reset = vxge_io_slot_reset,
4448         .resume = vxge_io_resume,
4449 };
4450
4451 static struct pci_driver vxge_driver = {
4452         .name = VXGE_DRIVER_NAME,
4453         .id_table = vxge_id_table,
4454         .probe = vxge_probe,
4455         .remove = __devexit_p(vxge_remove),
4456 #ifdef CONFIG_PM
4457         .suspend = vxge_pm_suspend,
4458         .resume = vxge_pm_resume,
4459 #endif
4460         .err_handler = &vxge_err_handler,
4461 };
4462
4463 static int __init
4464 vxge_starter(void)
4465 {
4466         int ret = 0;
4467         char version[32];
4468         snprintf(version, 32, "%s", DRV_VERSION);
4469
4470         printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4471                 VXGE_DRIVER_NAME);
4472         printk(KERN_CRIT "%s: Driver version: %s\n",
4473                         VXGE_DRIVER_NAME, version);
4474
4475         verify_bandwidth();
4476
4477         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4478         if (!driver_config)
4479                 return -ENOMEM;
4480
4481         ret = pci_register_driver(&vxge_driver);
4482
4483         if (driver_config->config_dev_cnt &&
4484            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4485                 vxge_debug_init(VXGE_ERR,
4486                         "%s: Configured %d of %d devices",
4487                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4488                         driver_config->total_dev_cnt);
4489
4490         if (ret)
4491                 kfree(driver_config);
4492
4493         return ret;
4494 }
4495
4496 static void __exit
4497 vxge_closer(void)
4498 {
4499         pci_unregister_driver(&vxge_driver);
4500         kfree(driver_config);
4501 }
4502 module_init(vxge_starter);
4503 module_exit(vxge_closer);