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