drivers/net/vxge/vxge-main.c

   1 /******************************************************************************
   2 * This software may be used and distributed according to the terms of
   3 * the GNU General Public License (GPL), incorporated herein by reference.
   4 * Drivers based on or derived from this code fall under the GPL and must
   5 * retain the authorship, copyright and license notice.  This file is not
   6 * a complete program and may only be used when the entire operating
   7 * system is licensed under the GPL.
   8 * See the file COPYING in this distribution for more information.
   9 *
  10 * vxge-main.c: Driver for Neterion Inc's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2009 Neterion Inc.
  13 *
  14 * The module loadable parameters that are supported by the driver and a brief
  15 * explanation of all the variables:
  16 * vlan_tag_strip:
  17 *       Strip VLAN Tag enable/disable. Instructs the device to remove
  18 *       the VLAN tag from all received tagged frames that are not
  19 *       replicated at the internal L2 switch.
  20 *               0 - Do not strip the VLAN tag.
  21 *               1 - Strip the VLAN tag.
  22 *
  23 * addr_learn_en:
  24 *       Enable learning the mac address of the guest OS interface in
  25 *       a virtualization environment.
  26 *               0 - DISABLE
  27 *               1 - ENABLE
  28 *
  29 * max_config_port:
  30 *       Maximum number of port to be supported.
  31 *               MIN -1 and MAX - 2
  32 *
  33 * max_config_vpath:
  34 *       This configures the maximum no of VPATH configures for each
  35 *       device function.
  36 *               MIN - 1 and MAX - 17
  37 *
  38 * max_config_dev:
  39 *       This configures maximum no of Device function to be enabled.
  40 *               MIN - 1 and MAX - 17
  41 *
  42 ******************************************************************************/
  43
  44 #include <linux/if_vlan.h>
  45 #include <linux/pci.h>
  46 #include <linux/tcp.h>
  47 #include <net/ip.h>
  48 #include <linux/netdevice.h>
  49 #include <linux/etherdevice.h>
  50 #include "vxge-main.h"
  51 #include "vxge-reg.h"
  52
  53 MODULE_LICENSE("Dual BSD/GPL");
  54 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  55         "Virtualized Server Adapter");
  56
  57 static struct pci_device_id vxge_id_table[] __devinitdata = {
  58         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  59         PCI_ANY_ID},
  60         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  61         PCI_ANY_ID},
  62         {0}
  63 };
  64
  65 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  66
  67 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  68 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  69 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  70 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  71 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  72 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  73
  74 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  75                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  76 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  77         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  78 module_param_array(bw_percentage, uint, NULL, 0);
  79
  80 static struct vxge_drv_config *driver_config;
  81
  82 static inline int is_vxge_card_up(struct vxgedev *vdev)
  83 {
  84         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  85 }
  86
  87 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  88 {
  89         unsigned long flags = 0;
  90         struct sk_buff **skb_ptr = NULL;
  91         struct sk_buff **temp;
  92 #define NR_SKB_COMPLETED 128
  93         struct sk_buff *completed[NR_SKB_COMPLETED];
  94         int more;
  95
  96         do {
  97                 more = 0;
  98                 skb_ptr = completed;
  99
 100                 if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
 101                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 102                                                 NR_SKB_COMPLETED, &more);
 103                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 104                 }
 105                 /* free SKBs */
 106                 for (temp = completed; temp != skb_ptr; temp++)
 107                         dev_kfree_skb_irq(*temp);
 108         } while (more) ;
 109 }
 110
 111 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 112 {
 113         int i;
 114
 115         /* Complete all transmits */
 116         for (i = 0; i < vdev->no_of_vpath; i++)
 117                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 118 }
 119
 120 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 121 {
 122         int i;
 123         struct vxge_ring *ring;
 124
 125         /* Complete all receives*/
 126         for (i = 0; i < vdev->no_of_vpath; i++) {
 127                 ring = &vdev->vpaths[i].ring;
 128                 vxge_hw_vpath_poll_rx(ring->handle);
 129         }
 130 }
 131
 132 /*
 133  * MultiQ manipulation helper functions
 134  */
 135 void vxge_stop_all_tx_queue(struct vxgedev *vdev)
 136 {
 137         int i;
 138         struct net_device *dev = vdev->ndev;
 139
 140         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 141                 for (i = 0; i < vdev->no_of_vpath; i++)
 142                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP;
 143         }
 144         netif_tx_stop_all_queues(dev);
 145 }
 146
 147 void vxge_stop_tx_queue(struct vxge_fifo *fifo)
 148 {
 149         struct net_device *dev = fifo->ndev;
 150
 151         struct netdev_queue *txq = NULL;
 152         if (fifo->tx_steering_type == TX_MULTIQ_STEERING)
 153                 txq = netdev_get_tx_queue(dev, fifo->driver_id);
 154         else {
 155                 txq = netdev_get_tx_queue(dev, 0);
 156                 fifo->queue_state = VPATH_QUEUE_STOP;
 157         }
 158
 159         netif_tx_stop_queue(txq);
 160 }
 161
 162 void vxge_start_all_tx_queue(struct vxgedev *vdev)
 163 {
 164         int i;
 165         struct net_device *dev = vdev->ndev;
 166
 167         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 168                 for (i = 0; i < vdev->no_of_vpath; i++)
 169                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
 170         }
 171         netif_tx_start_all_queues(dev);
 172 }
 173
 174 static void vxge_wake_all_tx_queue(struct vxgedev *vdev)
 175 {
 176         int i;
 177         struct net_device *dev = vdev->ndev;
 178
 179         if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
 180                 for (i = 0; i < vdev->no_of_vpath; i++)
 181                         vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
 182         }
 183         netif_tx_wake_all_queues(dev);
 184 }
 185
 186 void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb)
 187 {
 188         struct net_device *dev = fifo->ndev;
 189
 190         int vpath_no = fifo->driver_id;
 191         struct netdev_queue *txq = NULL;
 192         if (fifo->tx_steering_type == TX_MULTIQ_STEERING) {
 193                 txq = netdev_get_tx_queue(dev, vpath_no);
 194                 if (netif_tx_queue_stopped(txq))
 195                         netif_tx_wake_queue(txq);
 196         } else {
 197                 txq = netdev_get_tx_queue(dev, 0);
 198                 if (fifo->queue_state == VPATH_QUEUE_STOP)
 199                         if (netif_tx_queue_stopped(txq)) {
 200                                 fifo->queue_state = VPATH_QUEUE_START;
 201                                 netif_tx_wake_queue(txq);
 202                         }
 203         }
 204 }
 205
 206 /*
 207  * vxge_callback_link_up
 208  *
 209  * This function is called during interrupt context to notify link up state
 210  * change.
 211  */
 212 void
 213 vxge_callback_link_up(struct __vxge_hw_device *hldev)
 214 {
 215         struct net_device *dev = hldev->ndev;
 216         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 217
 218         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 219                 vdev->ndev->name, __func__, __LINE__);
 220         printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
 221         vdev->stats.link_up++;
 222
 223         netif_carrier_on(vdev->ndev);
 224         vxge_wake_all_tx_queue(vdev);
 225
 226         vxge_debug_entryexit(VXGE_TRACE,
 227                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 228 }
 229
 230 /*
 231  * vxge_callback_link_down
 232  *
 233  * This function is called during interrupt context to notify link down state
 234  * change.
 235  */
 236 void
 237 vxge_callback_link_down(struct __vxge_hw_device *hldev)
 238 {
 239         struct net_device *dev = hldev->ndev;
 240         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 241
 242         vxge_debug_entryexit(VXGE_TRACE,
 243                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 244         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
 245
 246         vdev->stats.link_down++;
 247         netif_carrier_off(vdev->ndev);
 248         vxge_stop_all_tx_queue(vdev);
 249
 250         vxge_debug_entryexit(VXGE_TRACE,
 251                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 252 }
 253
 254 /*
 255  * vxge_rx_alloc
 256  *
 257  * Allocate SKB.
 258  */
 259 static struct sk_buff*
 260 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 261 {
 262         struct net_device    *dev;
 263         struct sk_buff       *skb;
 264         struct vxge_rx_priv *rx_priv;
 265
 266         dev = ring->ndev;
 267         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 268                 ring->ndev->name, __func__, __LINE__);
 269
 270         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 271
 272         /* try to allocate skb first. this one may fail */
 273         skb = netdev_alloc_skb(dev, skb_size +
 274         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 275         if (skb == NULL) {
 276                 vxge_debug_mem(VXGE_ERR,
 277                         "%s: out of memory to allocate SKB", dev->name);
 278                 ring->stats.skb_alloc_fail++;
 279                 return NULL;
 280         }
 281
 282         vxge_debug_mem(VXGE_TRACE,
 283                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 284                 __func__, __LINE__, skb);
 285
 286         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 287
 288         rx_priv->skb = skb;
 289         rx_priv->skb_data = NULL;
 290         rx_priv->data_size = skb_size;
 291         vxge_debug_entryexit(VXGE_TRACE,
 292                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 293
 294         return skb;
 295 }
 296
 297 /*
 298  * vxge_rx_map
 299  */
 300 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 301 {
 302         struct vxge_rx_priv *rx_priv;
 303         dma_addr_t dma_addr;
 304
 305         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 306                 ring->ndev->name, __func__, __LINE__);
 307         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 308
 309         rx_priv->skb_data = rx_priv->skb->data;
 310         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 311                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 312
 313         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 314                 ring->stats.pci_map_fail++;
 315                 return -EIO;
 316         }
 317         vxge_debug_mem(VXGE_TRACE,
 318                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 319                 ring->ndev->name, __func__, __LINE__,
 320                 (unsigned long long)dma_addr);
 321         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 322
 323         rx_priv->data_dma = dma_addr;
 324         vxge_debug_entryexit(VXGE_TRACE,
 325                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 326
 327         return 0;
 328 }
 329
 330 /*
 331  * vxge_rx_initial_replenish
 332  * Allocation of RxD as an initial replenish procedure.
 333  */
 334 static enum vxge_hw_status
 335 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 336 {
 337         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 338         struct vxge_rx_priv *rx_priv;
 339
 340         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 341                 ring->ndev->name, __func__, __LINE__);
 342         if (vxge_rx_alloc(dtrh, ring,
 343                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 344                 return VXGE_HW_FAIL;
 345
 346         if (vxge_rx_map(dtrh, ring)) {
 347                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 348                 dev_kfree_skb(rx_priv->skb);
 349
 350                 return VXGE_HW_FAIL;
 351         }
 352         vxge_debug_entryexit(VXGE_TRACE,
 353                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 354
 355         return VXGE_HW_OK;
 356 }
 357
 358 static inline void
 359 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 360                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 361 {
 362
 363         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 364                         ring->ndev->name, __func__, __LINE__);
 365         skb_record_rx_queue(skb, ring->driver_id);
 366         skb->protocol = eth_type_trans(skb, ring->ndev);
 367
 368         ring->stats.rx_frms++;
 369         ring->stats.rx_bytes += pkt_length;
 370
 371         if (skb->pkt_type == PACKET_MULTICAST)
 372                 ring->stats.rx_mcast++;
 373
 374         vxge_debug_rx(VXGE_TRACE,
 375                 "%s: %s:%d  skb protocol = %d",
 376                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 377
 378         if (ring->gro_enable) {
 379                 if (ring->vlgrp && ext_info->vlan &&
 380                         (ring->vlan_tag_strip ==
 381                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 382                         vlan_gro_receive(ring->napi_p, ring->vlgrp,
 383                                         ext_info->vlan, skb);
 384                 else
 385                         napi_gro_receive(ring->napi_p, skb);
 386         } else {
 387                 if (ring->vlgrp && vlan &&
 388                         (ring->vlan_tag_strip ==
 389                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 390                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 391                 else
 392                         netif_receive_skb(skb);
 393         }
 394         vxge_debug_entryexit(VXGE_TRACE,
 395                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 396 }
 397
 398 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 399                                     struct vxge_rx_priv *rx_priv)
 400 {
 401         pci_dma_sync_single_for_device(ring->pdev,
 402                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 403
 404         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 405         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 406 }
 407
 408 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 409                              void *post_dtr, struct __vxge_hw_ring *ringh)
 410 {
 411         int dtr_count = *dtr_cnt;
 412         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 413                 if (*first_dtr)
 414                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 415                 *first_dtr = post_dtr;
 416         } else
 417                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 418         dtr_count++;
 419         *dtr_cnt = dtr_count;
 420 }
 421
 422 /*
 423  * vxge_rx_1b_compl
 424  *
 425  * If the interrupt is because of a received frame or if the receive ring
 426  * contains fresh as yet un-processed frames, this function is called.
 427  */
 428 enum vxge_hw_status
 429 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 430                  u8 t_code, void *userdata)
 431 {
 432         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 433         struct  net_device *dev = ring->ndev;
 434         unsigned int dma_sizes;
 435         void *first_dtr = NULL;
 436         int dtr_cnt = 0;
 437         int data_size;
 438         dma_addr_t data_dma;
 439         int pkt_length;
 440         struct sk_buff *skb;
 441         struct vxge_rx_priv *rx_priv;
 442         struct vxge_hw_ring_rxd_info ext_info;
 443         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 444                 ring->ndev->name, __func__, __LINE__);
 445         ring->pkts_processed = 0;
 446
 447         vxge_hw_ring_replenish(ringh, 0);
 448
 449         do {
 450                 prefetch((char *)dtr + L1_CACHE_BYTES);
 451                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 452                 skb = rx_priv->skb;
 453                 data_size = rx_priv->data_size;
 454                 data_dma = rx_priv->data_dma;
 455                 prefetch(rx_priv->skb_data);
 456
 457                 vxge_debug_rx(VXGE_TRACE,
 458                         "%s: %s:%d  skb = 0x%p",
 459                         ring->ndev->name, __func__, __LINE__, skb);
 460
 461                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 462                 pkt_length = dma_sizes;
 463
 464                 pkt_length -= ETH_FCS_LEN;
 465
 466                 vxge_debug_rx(VXGE_TRACE,
 467                         "%s: %s:%d  Packet Length = %d",
 468                         ring->ndev->name, __func__, __LINE__, pkt_length);
 469
 470                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 471
 472                 /* check skb validity */
 473                 vxge_assert(skb);
 474
 475                 prefetch((char *)skb + L1_CACHE_BYTES);
 476                 if (unlikely(t_code)) {
 477
 478                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 479                                 VXGE_HW_OK) {
 480
 481                                 ring->stats.rx_errors++;
 482                                 vxge_debug_rx(VXGE_TRACE,
 483                                         "%s: %s :%d Rx T_code is %d",
 484                                         ring->ndev->name, __func__,
 485                                         __LINE__, t_code);
 486
 487                                 /* If the t_code is not supported and if the
 488                                  * t_code is other than 0x5 (unparseable packet
 489                                  * such as unknown UPV6 header), Drop it !!!
 490                                  */
 491                                 vxge_re_pre_post(dtr, ring, rx_priv);
 492
 493                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 494                                 ring->stats.rx_dropped++;
 495                                 continue;
 496                         }
 497                 }
 498
 499                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 500
 501                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 502
 503                                 if (!vxge_rx_map(dtr, ring)) {
 504                                         skb_put(skb, pkt_length);
 505
 506                                         pci_unmap_single(ring->pdev, data_dma,
 507                                                 data_size, PCI_DMA_FROMDEVICE);
 508
 509                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 510                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 511                                                 ringh);
 512                                 } else {
 513                                         dev_kfree_skb(rx_priv->skb);
 514                                         rx_priv->skb = skb;
 515                                         rx_priv->data_size = data_size;
 516                                         vxge_re_pre_post(dtr, ring, rx_priv);
 517
 518                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 519                                                 ringh);
 520                                         ring->stats.rx_dropped++;
 521                                         break;
 522                                 }
 523                         } else {
 524                                 vxge_re_pre_post(dtr, ring, rx_priv);
 525
 526                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 527                                 ring->stats.rx_dropped++;
 528                                 break;
 529                         }
 530                 } else {
 531                         struct sk_buff *skb_up;
 532
 533                         skb_up = netdev_alloc_skb(dev, pkt_length +
 534                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 535                         if (skb_up != NULL) {
 536                                 skb_reserve(skb_up,
 537                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 538
 539                                 pci_dma_sync_single_for_cpu(ring->pdev,
 540                                         data_dma, data_size,
 541                                         PCI_DMA_FROMDEVICE);
 542
 543                                 vxge_debug_mem(VXGE_TRACE,
 544                                         "%s: %s:%d  skb_up = %p",
 545                                         ring->ndev->name, __func__,
 546                                         __LINE__, skb);
 547                                 memcpy(skb_up->data, skb->data, pkt_length);
 548
 549                                 vxge_re_pre_post(dtr, ring, rx_priv);
 550
 551                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 552                                         ringh);
 553                                 /* will netif_rx small SKB instead */
 554                                 skb = skb_up;
 555                                 skb_put(skb, pkt_length);
 556                         } else {
 557                                 vxge_re_pre_post(dtr, ring, rx_priv);
 558
 559                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 560                                 vxge_debug_rx(VXGE_ERR,
 561                                         "%s: vxge_rx_1b_compl: out of "
 562                                         "memory", dev->name);
 563                                 ring->stats.skb_alloc_fail++;
 564                                 break;
 565                         }
 566                 }
 567
 568                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 569                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 570                     ring->rx_csum && /* Offload Rx side CSUM */
 571                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 572                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 573                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 574                 else
 575                         skb->ip_summed = CHECKSUM_NONE;
 576
 577                 vxge_rx_complete(ring, skb, ext_info.vlan,
 578                         pkt_length, &ext_info);
 579
 580                 ring->budget--;
 581                 ring->pkts_processed++;
 582                 if (!ring->budget)
 583                         break;
 584
 585         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 586                 &t_code) == VXGE_HW_OK);
 587
 588         if (first_dtr)
 589                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 590
 591         vxge_debug_entryexit(VXGE_TRACE,
 592                                 "%s:%d  Exiting...",
 593                                 __func__, __LINE__);
 594         return VXGE_HW_OK;
 595 }
 596
 597 /*
 598  * vxge_xmit_compl
 599  *
 600  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 601  * this function is called. It identifies the last TxD whose buffer was
 602  * freed and frees all skbs whose data have already DMA'ed into the NICs
 603  * internal memory.
 604  */
 605 enum vxge_hw_status
 606 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 607                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 608                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 609 {
 610         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 611         struct sk_buff *skb, **done_skb = *skb_ptr;
 612         int pkt_cnt = 0;
 613
 614         vxge_debug_entryexit(VXGE_TRACE,
 615                 "%s:%d Entered....", __func__, __LINE__);
 616
 617         do {
 618                 int frg_cnt;
 619                 skb_frag_t *frag;
 620                 int i = 0, j;
 621                 struct vxge_tx_priv *txd_priv =
 622                         vxge_hw_fifo_txdl_private_get(dtr);
 623
 624                 skb = txd_priv->skb;
 625                 frg_cnt = skb_shinfo(skb)->nr_frags;
 626                 frag = &skb_shinfo(skb)->frags[0];
 627
 628                 vxge_debug_tx(VXGE_TRACE,
 629                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 630                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 631                                 __LINE__, fifo_hw, dtr, t_code);
 632                 /* check skb validity */
 633                 vxge_assert(skb);
 634                 vxge_debug_tx(VXGE_TRACE,
 635                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 636                         fifo->ndev->name, __func__, __LINE__,
 637                         skb, txd_priv, frg_cnt);
 638                 if (unlikely(t_code)) {
 639                         fifo->stats.tx_errors++;
 640                         vxge_debug_tx(VXGE_ERR,
 641                                 "%s: tx: dtr %p completed due to "
 642                                 "error t_code %01x", fifo->ndev->name,
 643                                 dtr, t_code);
 644                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 645                 }
 646
 647                 /*  for unfragmented skb */
 648                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 649                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 650
 651                 for (j = 0; j < frg_cnt; j++) {
 652                         pci_unmap_page(fifo->pdev,
 653                                         txd_priv->dma_buffers[i++],
 654                                         frag->size, PCI_DMA_TODEVICE);
 655                         frag += 1;
 656                 }
 657
 658                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 659
 660                 /* Updating the statistics block */
 661                 fifo->stats.tx_frms++;
 662                 fifo->stats.tx_bytes += skb->len;
 663
 664                 *done_skb++ = skb;
 665
 666                 if (--nr_skb <= 0) {
 667                         *more = 1;
 668                         break;
 669                 }
 670
 671                 pkt_cnt++;
 672                 if (pkt_cnt > fifo->indicate_max_pkts)
 673                         break;
 674
 675         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 676                                 &dtr, &t_code) == VXGE_HW_OK);
 677
 678         *skb_ptr = done_skb;
 679         vxge_wake_tx_queue(fifo, skb);
 680
 681         vxge_debug_entryexit(VXGE_TRACE,
 682                                 "%s: %s:%d  Exiting...",
 683                                 fifo->ndev->name, __func__, __LINE__);
 684         return VXGE_HW_OK;
 685 }
 686
 687 /* select a vpath to transmit the packet */
 688 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
 689         int *do_lock)
 690 {
 691         u16 queue_len, counter = 0;
 692         if (skb->protocol == htons(ETH_P_IP)) {
 693                 struct iphdr *ip;
 694                 struct tcphdr *th;
 695
 696                 ip = ip_hdr(skb);
 697
 698                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 699                         th = (struct tcphdr *)(((unsigned char *)ip) +
 700                                         ip->ihl*4);
 701
 702                         queue_len = vdev->no_of_vpath;
 703                         counter = (ntohs(th->source) +
 704                                 ntohs(th->dest)) &
 705                                 vdev->vpath_selector[queue_len - 1];
 706                         if (counter >= queue_len)
 707                                 counter = queue_len - 1;
 708
 709                         if (ip->protocol == IPPROTO_UDP) {
 710 #ifdef NETIF_F_LLTX
 711                                 *do_lock = 0;
 712 #endif
 713                         }
 714                 }
 715         }
 716         return counter;
 717 }
 718
 719 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 720         struct vxge_vpath *vpath, u64 del_mac)
 721 {
 722         struct list_head *entry, *next;
 723         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 724                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 725                         return TRUE;
 726         }
 727         return FALSE;
 728 }
 729
 730 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 731 {
 732         struct macInfo mac_info;
 733         u8 *mac_address = NULL;
 734         u64 mac_addr = 0, vpath_vector = 0;
 735         int vpath_idx = 0;
 736         enum vxge_hw_status status = VXGE_HW_OK;
 737         struct vxge_vpath *vpath = NULL;
 738         struct __vxge_hw_device *hldev;
 739
 740         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
 741
 742         mac_address = (u8 *)&mac_addr;
 743         memcpy(mac_address, mac_header, ETH_ALEN);
 744
 745         /* Is this mac address already in the list? */
 746         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 747                 vpath = &vdev->vpaths[vpath_idx];
 748                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 749                         return vpath_idx;
 750         }
 751
 752         memset(&mac_info, 0, sizeof(struct macInfo));
 753         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 754
 755         /* Any vpath has room to add mac address to its da table? */
 756         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 757                 vpath = &vdev->vpaths[vpath_idx];
 758                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 759                         /* Add this mac address to this vpath */
 760                         mac_info.vpath_no = vpath_idx;
 761                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 762                         status = vxge_add_mac_addr(vdev, &mac_info);
 763                         if (status != VXGE_HW_OK)
 764                                 return -EPERM;
 765                         return vpath_idx;
 766                 }
 767         }
 768
 769         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 770         vpath_idx = 0;
 771         mac_info.vpath_no = vpath_idx;
 772         /* Is the first vpath already selected as catch-basin ? */
 773         vpath = &vdev->vpaths[vpath_idx];
 774         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 775                 /* Add this mac address to this vpath */
 776                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 777                         return -EPERM;
 778                 return vpath_idx;
 779         }
 780
 781         /* Select first vpath as catch-basin */
 782         vpath_vector = vxge_mBIT(vpath->device_id);
 783         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 784                                 vxge_hw_mgmt_reg_type_mrpcim,
 785                                 0,
 786                                 (ulong)offsetof(
 787                                         struct vxge_hw_mrpcim_reg,
 788                                         rts_mgr_cbasin_cfg),
 789                                 vpath_vector);
 790         if (status != VXGE_HW_OK) {
 791                 vxge_debug_tx(VXGE_ERR,
 792                         "%s: Unable to set the vpath-%d in catch-basin mode",
 793                         VXGE_DRIVER_NAME, vpath->device_id);
 794                 return -EPERM;
 795         }
 796
 797         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 798                 return -EPERM;
 799
 800         return vpath_idx;
 801 }
 802
 803 /**
 804  * vxge_xmit
 805  * @skb : the socket buffer containing the Tx data.
 806  * @dev : device pointer.
 807  *
 808  * This function is the Tx entry point of the driver. Neterion NIC supports
 809  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 810  * NOTE: when device cant queue the pkt, just the trans_start variable will
 811  * not be upadted.
 812 */
 813 static netdev_tx_t
 814 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 815 {
 816         struct vxge_fifo *fifo = NULL;
 817         void *dtr_priv;
 818         void *dtr = NULL;
 819         struct vxgedev *vdev = NULL;
 820         enum vxge_hw_status status;
 821         int frg_cnt, first_frg_len;
 822         skb_frag_t *frag;
 823         int i = 0, j = 0, avail;
 824         u64 dma_pointer;
 825         struct vxge_tx_priv *txdl_priv = NULL;
 826         struct __vxge_hw_fifo *fifo_hw;
 827         int offload_type;
 828         unsigned long flags = 0;
 829         int vpath_no = 0;
 830         int do_spin_tx_lock = 1;
 831
 832         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 833                         dev->name, __func__, __LINE__);
 834
 835         /* A buffer with no data will be dropped */
 836         if (unlikely(skb->len <= 0)) {
 837                 vxge_debug_tx(VXGE_ERR,
 838                         "%s: Buffer has no data..", dev->name);
 839                 dev_kfree_skb(skb);
 840                 return NETDEV_TX_OK;
 841         }
 842
 843         vdev = (struct vxgedev *)netdev_priv(dev);
 844
 845         if (unlikely(!is_vxge_card_up(vdev))) {
 846                 vxge_debug_tx(VXGE_ERR,
 847                         "%s: vdev not initialized", dev->name);
 848                 dev_kfree_skb(skb);
 849                 return NETDEV_TX_OK;
 850         }
 851
 852         if (vdev->config.addr_learn_en) {
 853                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 854                 if (vpath_no == -EPERM) {
 855                         vxge_debug_tx(VXGE_ERR,
 856                                 "%s: Failed to store the mac address",
 857                                 dev->name);
 858                         dev_kfree_skb(skb);
 859                         return NETDEV_TX_OK;
 860                 }
 861         }
 862
 863         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 864                 vpath_no = skb_get_queue_mapping(skb);
 865         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 866                 vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
 867
 868         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 869
 870         if (vpath_no >= vdev->no_of_vpath)
 871                 vpath_no = 0;
 872
 873         fifo = &vdev->vpaths[vpath_no].fifo;
 874         fifo_hw = fifo->handle;
 875
 876         if (do_spin_tx_lock)
 877                 spin_lock_irqsave(&fifo->tx_lock, flags);
 878         else {
 879                 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
 880                         return NETDEV_TX_LOCKED;
 881         }
 882
 883         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
 884                 if (netif_subqueue_stopped(dev, skb)) {
 885                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 886                         return NETDEV_TX_BUSY;
 887                 }
 888         } else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
 889                 if (netif_queue_stopped(dev)) {
 890                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 891                         return NETDEV_TX_BUSY;
 892                 }
 893         }
 894         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 895         if (avail == 0) {
 896                 vxge_debug_tx(VXGE_ERR,
 897                         "%s: No free TXDs available", dev->name);
 898                 fifo->stats.txd_not_free++;
 899                 vxge_stop_tx_queue(fifo);
 900                 goto _exit2;
 901         }
 902
 903         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 904          * completion will resume the queue.
 905          */
 906         if (avail == 1)
 907                 vxge_stop_tx_queue(fifo);
 908
 909         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 910         if (unlikely(status != VXGE_HW_OK)) {
 911                 vxge_debug_tx(VXGE_ERR,
 912                    "%s: Out of descriptors .", dev->name);
 913                 fifo->stats.txd_out_of_desc++;
 914                 vxge_stop_tx_queue(fifo);
 915                 goto _exit2;
 916         }
 917
 918         vxge_debug_tx(VXGE_TRACE,
 919                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 920                 dev->name, __func__, __LINE__,
 921                 fifo_hw, dtr, dtr_priv);
 922
 923         if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
 924                 u16 vlan_tag = vlan_tx_tag_get(skb);
 925                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 926         }
 927
 928         first_frg_len = skb_headlen(skb);
 929
 930         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 931                                 PCI_DMA_TODEVICE);
 932
 933         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 934                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 935                 vxge_stop_tx_queue(fifo);
 936                 fifo->stats.pci_map_fail++;
 937                 goto _exit2;
 938         }
 939
 940         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 941         txdl_priv->skb = skb;
 942         txdl_priv->dma_buffers[j] = dma_pointer;
 943
 944         frg_cnt = skb_shinfo(skb)->nr_frags;
 945         vxge_debug_tx(VXGE_TRACE,
 946                         "%s: %s:%d skb = %p txdl_priv = %p "
 947                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 948                         __func__, __LINE__, skb, txdl_priv,
 949                         frg_cnt, (unsigned long long)dma_pointer);
 950
 951         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 952                 first_frg_len);
 953
 954         frag = &skb_shinfo(skb)->frags[0];
 955         for (i = 0; i < frg_cnt; i++) {
 956                 /* ignore 0 length fragment */
 957                 if (!frag->size)
 958                         continue;
 959
 960                 dma_pointer =
 961                         (u64)pci_map_page(fifo->pdev, frag->page,
 962                                 frag->page_offset, frag->size,
 963                                 PCI_DMA_TODEVICE);
 964
 965                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 966                         goto _exit0;
 967                 vxge_debug_tx(VXGE_TRACE,
 968                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 969                                 dev->name, __func__, __LINE__, i,
 970                                 (unsigned long long)dma_pointer);
 971
 972                 txdl_priv->dma_buffers[j] = dma_pointer;
 973                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 974                                         frag->size);
 975                 frag += 1;
 976         }
 977
 978         offload_type = vxge_offload_type(skb);
 979
 980         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 981
 982                 int mss = vxge_tcp_mss(skb);
 983                 if (mss) {
 984                         vxge_debug_tx(VXGE_TRACE,
 985                                 "%s: %s:%d mss = %d",
 986                                 dev->name, __func__, __LINE__, mss);
 987                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 988                 } else {
 989                         vxge_assert(skb->len <=
 990                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 991                         vxge_assert(0);
 992                         goto _exit1;
 993                 }
 994         }
 995
 996         if (skb->ip_summed == CHECKSUM_PARTIAL)
 997                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 998                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 999                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
1000                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
1001
1002         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
1003 #ifdef NETIF_F_LLTX
1004         dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
1005 #endif
1006         spin_unlock_irqrestore(&fifo->tx_lock, flags);
1007
1008         VXGE_COMPLETE_VPATH_TX(fifo);
1009         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
1010                 dev->name, __func__, __LINE__);
1011         return NETDEV_TX_OK;
1012
1013 _exit0:
1014         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
1015
1016 _exit1:
1017         j = 0;
1018         frag = &skb_shinfo(skb)->frags[0];
1019
1020         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
1021                         skb_headlen(skb), PCI_DMA_TODEVICE);
1022
1023         for (; j < i; j++) {
1024                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
1025                         frag->size, PCI_DMA_TODEVICE);
1026                 frag += 1;
1027         }
1028
1029         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
1030 _exit2:
1031         dev_kfree_skb(skb);
1032         spin_unlock_irqrestore(&fifo->tx_lock, flags);
1033         VXGE_COMPLETE_VPATH_TX(fifo);
1034
1035         return NETDEV_TX_OK;
1036 }
1037
1038 /*
1039  * vxge_rx_term
1040  *
1041  * Function will be called by hw function to abort all outstanding receive
1042  * descriptors.
1043  */
1044 static void
1045 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1046 {
1047         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1048         struct vxge_rx_priv *rx_priv =
1049                 vxge_hw_ring_rxd_private_get(dtrh);
1050
1051         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1052                         ring->ndev->name, __func__, __LINE__);
1053         if (state != VXGE_HW_RXD_STATE_POSTED)
1054                 return;
1055
1056         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1057                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1058
1059         dev_kfree_skb(rx_priv->skb);
1060         rx_priv->skb_data = NULL;
1061
1062         vxge_debug_entryexit(VXGE_TRACE,
1063                 "%s: %s:%d  Exiting...",
1064                 ring->ndev->name, __func__, __LINE__);
1065 }
1066
1067 /*
1068  * vxge_tx_term
1069  *
1070  * Function will be called to abort all outstanding tx descriptors
1071  */
1072 static void
1073 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1074 {
1075         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1076         skb_frag_t *frag;
1077         int i = 0, j, frg_cnt;
1078         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1079         struct sk_buff *skb = txd_priv->skb;
1080
1081         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1082
1083         if (state != VXGE_HW_TXDL_STATE_POSTED)
1084                 return;
1085
1086         /* check skb validity */
1087         vxge_assert(skb);
1088         frg_cnt = skb_shinfo(skb)->nr_frags;
1089         frag = &skb_shinfo(skb)->frags[0];
1090
1091         /*  for unfragmented skb */
1092         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1093                 skb_headlen(skb), PCI_DMA_TODEVICE);
1094
1095         for (j = 0; j < frg_cnt; j++) {
1096                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1097                                frag->size, PCI_DMA_TODEVICE);
1098                 frag += 1;
1099         }
1100
1101         dev_kfree_skb(skb);
1102
1103         vxge_debug_entryexit(VXGE_TRACE,
1104                 "%s:%d  Exiting...", __func__, __LINE__);
1105 }
1106
1107 /**
1108  * vxge_set_multicast
1109  * @dev: pointer to the device structure
1110  *
1111  * Entry point for multicast address enable/disable
1112  * This function is a driver entry point which gets called by the kernel
1113  * whenever multicast addresses must be enabled/disabled. This also gets
1114  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1115  * determine, if multicast address must be enabled or if promiscuous mode
1116  * is to be disabled etc.
1117  */
1118 static void vxge_set_multicast(struct net_device *dev)
1119 {
1120         struct dev_mc_list *mclist;
1121         struct vxgedev *vdev;
1122         int i, mcast_cnt = 0;
1123         struct __vxge_hw_device  *hldev;
1124         enum vxge_hw_status status = VXGE_HW_OK;
1125         struct macInfo mac_info;
1126         int vpath_idx = 0;
1127         struct vxge_mac_addrs *mac_entry;
1128         struct list_head *list_head;
1129         struct list_head *entry, *next;
1130         u8 *mac_address = NULL;
1131
1132         vxge_debug_entryexit(VXGE_TRACE,
1133                 "%s:%d", __func__, __LINE__);
1134
1135         vdev = (struct vxgedev *)netdev_priv(dev);
1136         hldev = (struct __vxge_hw_device  *)vdev->devh;
1137
1138         if (unlikely(!is_vxge_card_up(vdev)))
1139                 return;
1140
1141         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1142                 for (i = 0; i < vdev->no_of_vpath; i++) {
1143                         vxge_assert(vdev->vpaths[i].is_open);
1144                         status = vxge_hw_vpath_mcast_enable(
1145                                                 vdev->vpaths[i].handle);
1146                         vdev->all_multi_flg = 1;
1147                 }
1148         } else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1149                 for (i = 0; i < vdev->no_of_vpath; i++) {
1150                         vxge_assert(vdev->vpaths[i].is_open);
1151                         status = vxge_hw_vpath_mcast_disable(
1152                                                 vdev->vpaths[i].handle);
1153                         vdev->all_multi_flg = 1;
1154                 }
1155         }
1156
1157         if (status != VXGE_HW_OK)
1158                 vxge_debug_init(VXGE_ERR,
1159                         "failed to %s multicast, status %d",
1160                         dev->flags & IFF_ALLMULTI ?
1161                         "enable" : "disable", status);
1162
1163         if (!vdev->config.addr_learn_en) {
1164                 if (dev->flags & IFF_PROMISC) {
1165                         for (i = 0; i < vdev->no_of_vpath; i++) {
1166                                 vxge_assert(vdev->vpaths[i].is_open);
1167                                 status = vxge_hw_vpath_promisc_enable(
1168                                                 vdev->vpaths[i].handle);
1169                         }
1170                 } else {
1171                         for (i = 0; i < vdev->no_of_vpath; i++) {
1172                                 vxge_assert(vdev->vpaths[i].is_open);
1173                                 status = vxge_hw_vpath_promisc_disable(
1174                                                 vdev->vpaths[i].handle);
1175                         }
1176                 }
1177         }
1178
1179         memset(&mac_info, 0, sizeof(struct macInfo));
1180         /* Update individual M_CAST address list */
1181         if ((!vdev->all_multi_flg) && dev->mc_count) {
1182
1183                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1184                 list_head = &vdev->vpaths[0].mac_addr_list;
1185                 if ((dev->mc_count +
1186                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1187                                 vdev->vpaths[0].max_mac_addr_cnt)
1188                         goto _set_all_mcast;
1189
1190                 /* Delete previous MC's */
1191                 for (i = 0; i < mcast_cnt; i++) {
1192                         if (!list_empty(list_head))
1193                                 mac_entry = (struct vxge_mac_addrs *)
1194                                         list_first_entry(list_head,
1195                                                 struct vxge_mac_addrs,
1196                                                 item);
1197
1198                         list_for_each_safe(entry, next, list_head) {
1199
1200                                 mac_entry = (struct vxge_mac_addrs *) entry;
1201                                 /* Copy the mac address to delete */
1202                                 mac_address = (u8 *)&mac_entry->macaddr;
1203                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1204
1205                                 /* Is this a multicast address */
1206                                 if (0x01 & mac_info.macaddr[0]) {
1207                                         for (vpath_idx = 0; vpath_idx <
1208                                                 vdev->no_of_vpath;
1209                                                 vpath_idx++) {
1210                                                 mac_info.vpath_no = vpath_idx;
1211                                                 status = vxge_del_mac_addr(
1212                                                                 vdev,
1213                                                                 &mac_info);
1214                                         }
1215                                 }
1216                         }
1217                 }
1218
1219                 /* Add new ones */
1220                 for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
1221                         i++, mclist = mclist->next) {
1222
1223                         memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
1224                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1225                                         vpath_idx++) {
1226                                 mac_info.vpath_no = vpath_idx;
1227                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1228                                 status = vxge_add_mac_addr(vdev, &mac_info);
1229                                 if (status != VXGE_HW_OK) {
1230                                         vxge_debug_init(VXGE_ERR,
1231                                                 "%s:%d Setting individual"
1232                                                 "multicast address failed",
1233                                                 __func__, __LINE__);
1234                                         goto _set_all_mcast;
1235                                 }
1236                         }
1237                 }
1238
1239                 return;
1240 _set_all_mcast:
1241                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1242                 /* Delete previous MC's */
1243                 for (i = 0; i < mcast_cnt; i++) {
1244
1245                         list_for_each_safe(entry, next, list_head) {
1246
1247                                 mac_entry = (struct vxge_mac_addrs *) entry;
1248                                 /* Copy the mac address to delete */
1249                                 mac_address = (u8 *)&mac_entry->macaddr;
1250                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1251
1252                                 /* Is this a multicast address */
1253                                 if (0x01 & mac_info.macaddr[0])
1254                                         break;
1255                         }
1256
1257                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1258                                         vpath_idx++) {
1259                                 mac_info.vpath_no = vpath_idx;
1260                                 status = vxge_del_mac_addr(vdev, &mac_info);
1261                         }
1262                 }
1263
1264                 /* Enable all multicast */
1265                 for (i = 0; i < vdev->no_of_vpath; i++) {
1266                         vxge_assert(vdev->vpaths[i].is_open);
1267                         status = vxge_hw_vpath_mcast_enable(
1268                                                 vdev->vpaths[i].handle);
1269                         if (status != VXGE_HW_OK) {
1270                                 vxge_debug_init(VXGE_ERR,
1271                                         "%s:%d Enabling all multicasts failed",
1272                                          __func__, __LINE__);
1273                         }
1274                         vdev->all_multi_flg = 1;
1275                 }
1276                 dev->flags |= IFF_ALLMULTI;
1277         }
1278
1279         vxge_debug_entryexit(VXGE_TRACE,
1280                 "%s:%d  Exiting...", __func__, __LINE__);
1281 }
1282
1283 /**
1284  * vxge_set_mac_addr
1285  * @dev: pointer to the device structure
1286  *
1287  * Update entry "0" (default MAC addr)
1288  */
1289 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1290 {
1291         struct sockaddr *addr = p;
1292         struct vxgedev *vdev;
1293         struct __vxge_hw_device  *hldev;
1294         enum vxge_hw_status status = VXGE_HW_OK;
1295         struct macInfo mac_info_new, mac_info_old;
1296         int vpath_idx = 0;
1297
1298         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1299
1300         vdev = (struct vxgedev *)netdev_priv(dev);
1301         hldev = vdev->devh;
1302
1303         if (!is_valid_ether_addr(addr->sa_data))
1304                 return -EINVAL;
1305
1306         memset(&mac_info_new, 0, sizeof(struct macInfo));
1307         memset(&mac_info_old, 0, sizeof(struct macInfo));
1308
1309         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1310                 __func__, __LINE__);
1311
1312         /* Get the old address */
1313         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1314
1315         /* Copy the new address */
1316         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1317
1318         /* First delete the old mac address from all the vpaths
1319         as we can't specify the index while adding new mac address */
1320         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1321                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1322                 if (!vpath->is_open) {
1323                         /* This can happen when this interface is added/removed
1324                         to the bonding interface. Delete this station address
1325                         from the linked list */
1326                         vxge_mac_list_del(vpath, &mac_info_old);
1327
1328                         /* Add this new address to the linked list
1329                         for later restoring */
1330                         vxge_mac_list_add(vpath, &mac_info_new);
1331
1332                         continue;
1333                 }
1334                 /* Delete the station address */
1335                 mac_info_old.vpath_no = vpath_idx;
1336                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1337         }
1338
1339         if (unlikely(!is_vxge_card_up(vdev))) {
1340                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1341                 return VXGE_HW_OK;
1342         }
1343
1344         /* Set this mac address to all the vpaths */
1345         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1346                 mac_info_new.vpath_no = vpath_idx;
1347                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1348                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1349                 if (status != VXGE_HW_OK)
1350                         return -EINVAL;
1351         }
1352
1353         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1354
1355         return status;
1356 }
1357
1358 /*
1359  * vxge_vpath_intr_enable
1360  * @vdev: pointer to vdev
1361  * @vp_id: vpath for which to enable the interrupts
1362  *
1363  * Enables the interrupts for the vpath
1364 */
1365 void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1366 {
1367         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1368         int msix_id, alarm_msix_id;
1369         int tim_msix_id[4] = {[0 ...3] = 0};
1370
1371         vxge_hw_vpath_intr_enable(vpath->handle);
1372
1373         if (vdev->config.intr_type == INTA)
1374                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1375         else {
1376                 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1377                 alarm_msix_id =
1378                         VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1379
1380                 tim_msix_id[0] = msix_id;
1381                 tim_msix_id[1] = msix_id + 1;
1382                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1383                         alarm_msix_id);
1384
1385                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1386                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1387
1388                 /* enable the alarm vector */
1389                 vxge_hw_vpath_msix_unmask(vpath->handle, alarm_msix_id);
1390         }
1391 }
1392
1393 /*
1394  * vxge_vpath_intr_disable
1395  * @vdev: pointer to vdev
1396  * @vp_id: vpath for which to disable the interrupts
1397  *
1398  * Disables the interrupts for the vpath
1399 */
1400 void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1401 {
1402         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1403         int msix_id;
1404
1405         vxge_hw_vpath_intr_disable(vpath->handle);
1406
1407         if (vdev->config.intr_type == INTA)
1408                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1409         else {
1410                 msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1411                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1412                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1413
1414                 /* disable the alarm vector */
1415                 msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
1416                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1417         }
1418 }
1419
1420 /*
1421  * vxge_reset_vpath
1422  * @vdev: pointer to vdev
1423  * @vp_id: vpath to reset
1424  *
1425  * Resets the vpath
1426 */
1427 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1428 {
1429         enum vxge_hw_status status = VXGE_HW_OK;
1430         int ret = 0;
1431
1432         /* check if device is down already */
1433         if (unlikely(!is_vxge_card_up(vdev)))
1434                 return 0;
1435
1436         /* is device reset already scheduled */
1437         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1438                 return 0;
1439
1440         if (vdev->vpaths[vp_id].handle) {
1441                 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1442                                 == VXGE_HW_OK) {
1443                         if (is_vxge_card_up(vdev) &&
1444                                 vxge_hw_vpath_recover_from_reset(
1445                                         vdev->vpaths[vp_id].handle)
1446                                         != VXGE_HW_OK) {
1447                                 vxge_debug_init(VXGE_ERR,
1448                                         "vxge_hw_vpath_recover_from_reset"
1449                                         "failed for vpath:%d", vp_id);
1450                                 return status;
1451                         }
1452                 } else {
1453                         vxge_debug_init(VXGE_ERR,
1454                                 "vxge_hw_vpath_reset failed for"
1455                                 "vpath:%d", vp_id);
1456                                 return status;
1457                 }
1458         } else
1459                 return VXGE_HW_FAIL;
1460
1461         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1462         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1463
1464         /* Enable all broadcast */
1465         vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1466
1467         /* Enable the interrupts */
1468         vxge_vpath_intr_enable(vdev, vp_id);
1469
1470         smp_wmb();
1471
1472         /* Enable the flow of traffic through the vpath */
1473         vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1474
1475         smp_wmb();
1476         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1477         vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1478
1479         /* Vpath reset done */
1480         clear_bit(vp_id, &vdev->vp_reset);
1481
1482         /* Start the vpath queue */
1483         vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1484
1485         return ret;
1486 }
1487
1488 static int do_vxge_reset(struct vxgedev *vdev, int event)
1489 {
1490         enum vxge_hw_status status;
1491         int ret = 0, vp_id, i;
1492
1493         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1494
1495         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1496                 /* check if device is down already */
1497                 if (unlikely(!is_vxge_card_up(vdev)))
1498                         return 0;
1499
1500                 /* is reset already scheduled */
1501                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1502                         return 0;
1503         }
1504
1505         if (event == VXGE_LL_FULL_RESET) {
1506                 /* wait for all the vpath reset to complete */
1507                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1508                         while (test_bit(vp_id, &vdev->vp_reset))
1509                                 msleep(50);
1510                 }
1511
1512                 /* if execution mode is set to debug, don't reset the adapter */
1513                 if (unlikely(vdev->exec_mode)) {
1514                         vxge_debug_init(VXGE_ERR,
1515                                 "%s: execution mode is debug, returning..",
1516                                 vdev->ndev->name);
1517                 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1518                 vxge_stop_all_tx_queue(vdev);
1519                 return 0;
1520                 }
1521         }
1522
1523         if (event == VXGE_LL_FULL_RESET) {
1524                 vxge_hw_device_intr_disable(vdev->devh);
1525
1526                 switch (vdev->cric_err_event) {
1527                 case VXGE_HW_EVENT_UNKNOWN:
1528                         vxge_stop_all_tx_queue(vdev);
1529                         vxge_debug_init(VXGE_ERR,
1530                                 "fatal: %s: Disabling device due to"
1531                                 "unknown error",
1532                                 vdev->ndev->name);
1533                         ret = -EPERM;
1534                         goto out;
1535                 case VXGE_HW_EVENT_RESET_START:
1536                         break;
1537                 case VXGE_HW_EVENT_RESET_COMPLETE:
1538                 case VXGE_HW_EVENT_LINK_DOWN:
1539                 case VXGE_HW_EVENT_LINK_UP:
1540                 case VXGE_HW_EVENT_ALARM_CLEARED:
1541                 case VXGE_HW_EVENT_ECCERR:
1542                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1543                         ret = -EPERM;
1544                         goto out;
1545                 case VXGE_HW_EVENT_FIFO_ERR:
1546                 case VXGE_HW_EVENT_VPATH_ERR:
1547                         break;
1548                 case VXGE_HW_EVENT_CRITICAL_ERR:
1549                         vxge_stop_all_tx_queue(vdev);
1550                         vxge_debug_init(VXGE_ERR,
1551                                 "fatal: %s: Disabling device due to"
1552                                 "serious error",
1553                                 vdev->ndev->name);
1554                         /* SOP or device reset required */
1555                         /* This event is not currently used */
1556                         ret = -EPERM;
1557                         goto out;
1558                 case VXGE_HW_EVENT_SERR:
1559                         vxge_stop_all_tx_queue(vdev);
1560                         vxge_debug_init(VXGE_ERR,
1561                                 "fatal: %s: Disabling device due to"
1562                                 "serious error",
1563                                 vdev->ndev->name);
1564                         ret = -EPERM;
1565                         goto out;
1566                 case VXGE_HW_EVENT_SRPCIM_SERR:
1567                 case VXGE_HW_EVENT_MRPCIM_SERR:
1568                         ret = -EPERM;
1569                         goto out;
1570                 case VXGE_HW_EVENT_SLOT_FREEZE:
1571                         vxge_stop_all_tx_queue(vdev);
1572                         vxge_debug_init(VXGE_ERR,
1573                                 "fatal: %s: Disabling device due to"
1574                                 "slot freeze",
1575                                 vdev->ndev->name);
1576                         ret = -EPERM;
1577                         goto out;
1578                 default:
1579                         break;
1580
1581                 }
1582         }
1583
1584         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1585                 vxge_stop_all_tx_queue(vdev);
1586
1587         if (event == VXGE_LL_FULL_RESET) {
1588                 status = vxge_reset_all_vpaths(vdev);
1589                 if (status != VXGE_HW_OK) {
1590                         vxge_debug_init(VXGE_ERR,
1591                                 "fatal: %s: can not reset vpaths",
1592                                 vdev->ndev->name);
1593                         ret = -EPERM;
1594                         goto out;
1595                 }
1596         }
1597
1598         if (event == VXGE_LL_COMPL_RESET) {
1599                 for (i = 0; i < vdev->no_of_vpath; i++)
1600                         if (vdev->vpaths[i].handle) {
1601                                 if (vxge_hw_vpath_recover_from_reset(
1602                                         vdev->vpaths[i].handle)
1603                                                 != VXGE_HW_OK) {
1604                                         vxge_debug_init(VXGE_ERR,
1605                                                 "vxge_hw_vpath_recover_"
1606                                                 "from_reset failed for vpath: "
1607                                                 "%d", i);
1608                                         ret = -EPERM;
1609                                         goto out;
1610                                 }
1611                                 } else {
1612                                         vxge_debug_init(VXGE_ERR,
1613                                         "vxge_hw_vpath_reset failed for "
1614                                                 "vpath:%d", i);
1615                                         ret = -EPERM;
1616                                         goto out;
1617                                 }
1618         }
1619
1620         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1621                 /* Reprogram the DA table with populated mac addresses */
1622                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1623                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1624                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1625                 }
1626
1627                 /* enable vpath interrupts */
1628                 for (i = 0; i < vdev->no_of_vpath; i++)
1629                         vxge_vpath_intr_enable(vdev, i);
1630
1631                 vxge_hw_device_intr_enable(vdev->devh);
1632
1633                 smp_wmb();
1634
1635                 /* Indicate card up */
1636                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1637
1638                 /* Get the traffic to flow through the vpaths */
1639                 for (i = 0; i < vdev->no_of_vpath; i++) {
1640                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1641                         smp_wmb();
1642                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1643                 }
1644
1645                 vxge_wake_all_tx_queue(vdev);
1646         }
1647
1648 out:
1649         vxge_debug_entryexit(VXGE_TRACE,
1650                 "%s:%d  Exiting...", __func__, __LINE__);
1651
1652         /* Indicate reset done */
1653         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1654                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1655         return ret;
1656 }
1657
1658 /*
1659  * vxge_reset
1660  * @vdev: pointer to ll device
1661  *
1662  * driver may reset the chip on events of serr, eccerr, etc
1663  */
1664 int vxge_reset(struct vxgedev *vdev)
1665 {
1666         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1667         return 0;
1668 }
1669
1670 /**
1671  * vxge_poll - Receive handler when Receive Polling is used.
1672  * @dev: pointer to the device structure.
1673  * @budget: Number of packets budgeted to be processed in this iteration.
1674  *
1675  * This function comes into picture only if Receive side is being handled
1676  * through polling (called NAPI in linux). It mostly does what the normal
1677  * Rx interrupt handler does in terms of descriptor and packet processing
1678  * but not in an interrupt context. Also it will process a specified number
1679  * of packets at most in one iteration. This value is passed down by the
1680  * kernel as the function argument 'budget'.
1681  */
1682 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1683 {
1684         struct vxge_ring *ring =
1685                 container_of(napi, struct vxge_ring, napi);
1686         int budget_org = budget;
1687         ring->budget = budget;
1688
1689         vxge_hw_vpath_poll_rx(ring->handle);
1690
1691         if (ring->pkts_processed < budget_org) {
1692                 napi_complete(napi);
1693                 /* Re enable the Rx interrupts for the vpath */
1694                 vxge_hw_channel_msix_unmask(
1695                                 (struct __vxge_hw_channel *)ring->handle,
1696                                 ring->rx_vector_no);
1697         }
1698
1699         return ring->pkts_processed;
1700 }
1701
1702 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1703 {
1704         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1705         int pkts_processed = 0;
1706         int i;
1707         int budget_org = budget;
1708         struct vxge_ring *ring;
1709
1710         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1711                 pci_get_drvdata(vdev->pdev);
1712
1713         for (i = 0; i < vdev->no_of_vpath; i++) {
1714                 ring = &vdev->vpaths[i].ring;
1715                 ring->budget = budget;
1716                 vxge_hw_vpath_poll_rx(ring->handle);
1717                 pkts_processed += ring->pkts_processed;
1718                 budget -= ring->pkts_processed;
1719                 if (budget <= 0)
1720                         break;
1721         }
1722
1723         VXGE_COMPLETE_ALL_TX(vdev);
1724
1725         if (pkts_processed < budget_org) {
1726                 napi_complete(napi);
1727                 /* Re enable the Rx interrupts for the ring */
1728                 vxge_hw_device_unmask_all(hldev);
1729                 vxge_hw_device_flush_io(hldev);
1730         }
1731
1732         return pkts_processed;
1733 }
1734
1735 #ifdef CONFIG_NET_POLL_CONTROLLER
1736 /**
1737  * vxge_netpoll - netpoll event handler entry point
1738  * @dev : pointer to the device structure.
1739  * Description:
1740  *      This function will be called by upper layer to check for events on the
1741  * interface in situations where interrupts are disabled. It is used for
1742  * specific in-kernel networking tasks, such as remote consoles and kernel
1743  * debugging over the network (example netdump in RedHat).
1744  */
1745 static void vxge_netpoll(struct net_device *dev)
1746 {
1747         struct __vxge_hw_device  *hldev;
1748         struct vxgedev *vdev;
1749
1750         vdev = (struct vxgedev *)netdev_priv(dev);
1751         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1752
1753         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1754
1755         if (pci_channel_offline(vdev->pdev))
1756                 return;
1757
1758         disable_irq(dev->irq);
1759         vxge_hw_device_clear_tx_rx(hldev);
1760
1761         vxge_hw_device_clear_tx_rx(hldev);
1762         VXGE_COMPLETE_ALL_RX(vdev);
1763         VXGE_COMPLETE_ALL_TX(vdev);
1764
1765         enable_irq(dev->irq);
1766
1767         vxge_debug_entryexit(VXGE_TRACE,
1768                 "%s:%d  Exiting...", __func__, __LINE__);
1769         return;
1770 }
1771 #endif
1772
1773 /* RTH configuration */
1774 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1775 {
1776         enum vxge_hw_status status = VXGE_HW_OK;
1777         struct vxge_hw_rth_hash_types hash_types;
1778         u8 itable[256] = {0}; /* indirection table */
1779         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1780         int index;
1781
1782         /*
1783          * Filling
1784          *      - itable with bucket numbers
1785          *      - mtable with bucket-to-vpath mapping
1786          */
1787         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1788                 itable[index] = index;
1789                 mtable[index] = index % vdev->no_of_vpath;
1790         }
1791
1792         /* Fill RTH hash types */
1793         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1794         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1795         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1796         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1797         hash_types.hash_type_tcpipv6ex_en =
1798                                         vdev->config.rth_hash_type_tcpipv6ex;
1799         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1800
1801         /* set indirection table, bucket-to-vpath mapping */
1802         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1803                                                 vdev->no_of_vpath,
1804                                                 mtable, itable,
1805                                                 vdev->config.rth_bkt_sz);
1806         if (status != VXGE_HW_OK) {
1807                 vxge_debug_init(VXGE_ERR,
1808                         "RTH indirection table configuration failed "
1809                         "for vpath:%d", vdev->vpaths[0].device_id);
1810                 return status;
1811         }
1812
1813         /*
1814         * Because the itable_set() method uses the active_table field
1815         * for the target virtual path the RTH config should be updated
1816         * for all VPATHs. The h/w only uses the lowest numbered VPATH
1817         * when steering frames.
1818         */
1819          for (index = 0; index < vdev->no_of_vpath; index++) {
1820                 status = vxge_hw_vpath_rts_rth_set(
1821                                 vdev->vpaths[index].handle,
1822                                 vdev->config.rth_algorithm,
1823                                 &hash_types,
1824                                 vdev->config.rth_bkt_sz);
1825
1826                  if (status != VXGE_HW_OK) {
1827                         vxge_debug_init(VXGE_ERR,
1828                                 "RTH configuration failed for vpath:%d",
1829                                 vdev->vpaths[index].device_id);
1830                         return status;
1831                  }
1832          }
1833
1834         return status;
1835 }
1836
1837 int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1838 {
1839         struct vxge_mac_addrs *new_mac_entry;
1840         u8 *mac_address = NULL;
1841
1842         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1843                 return TRUE;
1844
1845         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1846         if (!new_mac_entry) {
1847                 vxge_debug_mem(VXGE_ERR,
1848                         "%s: memory allocation failed",
1849                         VXGE_DRIVER_NAME);
1850                 return FALSE;
1851         }
1852
1853         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1854
1855         /* Copy the new mac address to the list */
1856         mac_address = (u8 *)&new_mac_entry->macaddr;
1857         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1858
1859         new_mac_entry->state = mac->state;
1860         vpath->mac_addr_cnt++;
1861
1862         /* Is this a multicast address */
1863         if (0x01 & mac->macaddr[0])
1864                 vpath->mcast_addr_cnt++;
1865
1866         return TRUE;
1867 }
1868
1869 /* Add a mac address to DA table */
1870 enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1871 {
1872         enum vxge_hw_status status = VXGE_HW_OK;
1873         struct vxge_vpath *vpath;
1874         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1875
1876         if (0x01 & mac->macaddr[0]) /* multicast address */
1877                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1878         else
1879                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1880
1881         vpath = &vdev->vpaths[mac->vpath_no];
1882         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1883                                                 mac->macmask, duplicate_mode);
1884         if (status != VXGE_HW_OK) {
1885                 vxge_debug_init(VXGE_ERR,
1886                         "DA config add entry failed for vpath:%d",
1887                         vpath->device_id);
1888         } else
1889                 if (FALSE == vxge_mac_list_add(vpath, mac))
1890                         status = -EPERM;
1891
1892         return status;
1893 }
1894
1895 int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1896 {
1897         struct list_head *entry, *next;
1898         u64 del_mac = 0;
1899         u8 *mac_address = (u8 *) (&del_mac);
1900
1901         /* Copy the mac address to delete from the list */
1902         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1903
1904         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1905                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1906                         list_del(entry);
1907                         kfree((struct vxge_mac_addrs *)entry);
1908                         vpath->mac_addr_cnt--;
1909
1910                         /* Is this a multicast address */
1911                         if (0x01 & mac->macaddr[0])
1912                                 vpath->mcast_addr_cnt--;
1913                         return TRUE;
1914                 }
1915         }
1916
1917         return FALSE;
1918 }
1919 /* delete a mac address from DA table */
1920 enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1921 {
1922         enum vxge_hw_status status = VXGE_HW_OK;
1923         struct vxge_vpath *vpath;
1924
1925         vpath = &vdev->vpaths[mac->vpath_no];
1926         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1927                                                 mac->macmask);
1928         if (status != VXGE_HW_OK) {
1929                 vxge_debug_init(VXGE_ERR,
1930                         "DA config delete entry failed for vpath:%d",
1931                         vpath->device_id);
1932         } else
1933                 vxge_mac_list_del(vpath, mac);
1934         return status;
1935 }
1936
1937 /* list all mac addresses from DA table */
1938 enum vxge_hw_status
1939 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1940                                         struct macInfo *mac)
1941 {
1942         enum vxge_hw_status status = VXGE_HW_OK;
1943         unsigned char macmask[ETH_ALEN];
1944         unsigned char macaddr[ETH_ALEN];
1945
1946         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1947                                 macaddr, macmask);
1948         if (status != VXGE_HW_OK) {
1949                 vxge_debug_init(VXGE_ERR,
1950                         "DA config list entry failed for vpath:%d",
1951                         vpath->device_id);
1952                 return status;
1953         }
1954
1955         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1956
1957                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1958                                 macaddr, macmask);
1959                 if (status != VXGE_HW_OK)
1960                         break;
1961         }
1962
1963         return status;
1964 }
1965
1966 /* Store all vlan ids from the list to the vid table */
1967 enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1968 {
1969         enum vxge_hw_status status = VXGE_HW_OK;
1970         struct vxgedev *vdev = vpath->vdev;
1971         u16 vid;
1972
1973         if (vdev->vlgrp && vpath->is_open) {
1974
1975                 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1976                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1977                                 continue;
1978                         /* Add these vlan to the vid table */
1979                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1980                 }
1981         }
1982
1983         return status;
1984 }
1985
1986 /* Store all mac addresses from the list to the DA table */
1987 enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1988 {
1989         enum vxge_hw_status status = VXGE_HW_OK;
1990         struct macInfo mac_info;
1991         u8 *mac_address = NULL;
1992         struct list_head *entry, *next;
1993
1994         memset(&mac_info, 0, sizeof(struct macInfo));
1995
1996         if (vpath->is_open) {
1997
1998                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1999                         mac_address =
2000                                 (u8 *)&
2001                                 ((struct vxge_mac_addrs *)entry)->macaddr;
2002                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
2003                         ((struct vxge_mac_addrs *)entry)->state =
2004                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
2005                         /* does this mac address already exist in da table? */
2006                         status = vxge_search_mac_addr_in_da_table(vpath,
2007                                 &mac_info);
2008                         if (status != VXGE_HW_OK) {
2009                                 /* Add this mac address to the DA table */
2010                                 status = vxge_hw_vpath_mac_addr_add(
2011                                         vpath->handle, mac_info.macaddr,
2012                                         mac_info.macmask,
2013                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
2014                                 if (status != VXGE_HW_OK) {
2015                                         vxge_debug_init(VXGE_ERR,
2016                                             "DA add entry failed for vpath:%d",
2017                                             vpath->device_id);
2018                                         ((struct vxge_mac_addrs *)entry)->state
2019                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
2020                                 }
2021                         }
2022                 }
2023         }
2024
2025         return status;
2026 }
2027
2028 /* reset vpaths */
2029 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
2030 {
2031         int i;
2032         enum vxge_hw_status status = VXGE_HW_OK;
2033
2034         for (i = 0; i < vdev->no_of_vpath; i++)
2035                 if (vdev->vpaths[i].handle) {
2036                         if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
2037                                         == VXGE_HW_OK) {
2038                                 if (is_vxge_card_up(vdev) &&
2039                                         vxge_hw_vpath_recover_from_reset(
2040                                                 vdev->vpaths[i].handle)
2041                                                 != VXGE_HW_OK) {
2042                                         vxge_debug_init(VXGE_ERR,
2043                                                 "vxge_hw_vpath_recover_"
2044                                                 "from_reset failed for vpath: "
2045                                                 "%d", i);
2046                                         return status;
2047                                 }
2048                         } else {
2049                                 vxge_debug_init(VXGE_ERR,
2050                                         "vxge_hw_vpath_reset failed for "
2051                                         "vpath:%d", i);
2052                                         return status;
2053                         }
2054                 }
2055         return status;
2056 }
2057
2058 /* close vpaths */
2059 void vxge_close_vpaths(struct vxgedev *vdev, int index)
2060 {
2061         int i;
2062         for (i = index; i < vdev->no_of_vpath; i++) {
2063                 if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
2064                         vxge_hw_vpath_close(vdev->vpaths[i].handle);
2065                         vdev->stats.vpaths_open--;
2066                 }
2067                 vdev->vpaths[i].is_open = 0;
2068                 vdev->vpaths[i].handle  = NULL;
2069         }
2070 }
2071
2072 /* open vpaths */
2073 int vxge_open_vpaths(struct vxgedev *vdev)
2074 {
2075         enum vxge_hw_status status;
2076         int i;
2077         u32 vp_id = 0;
2078         struct vxge_hw_vpath_attr attr;
2079
2080         for (i = 0; i < vdev->no_of_vpath; i++) {
2081                 vxge_assert(vdev->vpaths[i].is_configured);
2082                 attr.vp_id = vdev->vpaths[i].device_id;
2083                 attr.fifo_attr.callback = vxge_xmit_compl;
2084                 attr.fifo_attr.txdl_term = vxge_tx_term;
2085                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2086                 attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
2087
2088                 attr.ring_attr.callback = vxge_rx_1b_compl;
2089                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2090                 attr.ring_attr.rxd_term = vxge_rx_term;
2091                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2092                 attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
2093
2094                 vdev->vpaths[i].ring.ndev = vdev->ndev;
2095                 vdev->vpaths[i].ring.pdev = vdev->pdev;
2096                 status = vxge_hw_vpath_open(vdev->devh, &attr,
2097                                 &(vdev->vpaths[i].handle));
2098                 if (status == VXGE_HW_OK) {
2099                         vdev->vpaths[i].fifo.handle =
2100                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2101                         vdev->vpaths[i].ring.handle =
2102                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2103                         vdev->vpaths[i].fifo.tx_steering_type =
2104                                 vdev->config.tx_steering_type;
2105                         vdev->vpaths[i].fifo.ndev = vdev->ndev;
2106                         vdev->vpaths[i].fifo.pdev = vdev->pdev;
2107                         vdev->vpaths[i].fifo.indicate_max_pkts =
2108                                 vdev->config.fifo_indicate_max_pkts;
2109                         vdev->vpaths[i].ring.rx_vector_no = 0;
2110                         vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
2111                         vdev->vpaths[i].is_open = 1;
2112                         vdev->vp_handles[i] = vdev->vpaths[i].handle;
2113                         vdev->vpaths[i].ring.gro_enable =
2114                                                 vdev->config.gro_enable;
2115                         vdev->vpaths[i].ring.vlan_tag_strip =
2116                                                 vdev->vlan_tag_strip;
2117                         vdev->stats.vpaths_open++;
2118                 } else {
2119                         vdev->stats.vpath_open_fail++;
2120                         vxge_debug_init(VXGE_ERR,
2121                                 "%s: vpath: %d failed to open "
2122                                 "with status: %d",
2123                             vdev->ndev->name, vdev->vpaths[i].device_id,
2124                                 status);
2125                         vxge_close_vpaths(vdev, 0);
2126                         return -EPERM;
2127                 }
2128
2129                 vp_id =
2130                   ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
2131                   vpath->vp_id;
2132                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2133         }
2134         return VXGE_HW_OK;
2135 }
2136
2137 /*
2138  *  vxge_isr_napi
2139  *  @irq: the irq of the device.
2140  *  @dev_id: a void pointer to the hldev structure of the Titan device
2141  *  @ptregs: pointer to the registers pushed on the stack.
2142  *
2143  *  This function is the ISR handler of the device when napi is enabled. It
2144  *  identifies the reason for the interrupt and calls the relevant service
2145  *  routines.
2146  */
2147 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2148 {
2149         struct net_device *dev;
2150         struct __vxge_hw_device *hldev;
2151         u64 reason;
2152         enum vxge_hw_status status;
2153         struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2154
2155         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2156
2157         dev = vdev->ndev;
2158         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2159
2160         if (pci_channel_offline(vdev->pdev))
2161                 return IRQ_NONE;
2162
2163         if (unlikely(!is_vxge_card_up(vdev)))
2164                 return IRQ_NONE;
2165
2166         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2167                         &reason);
2168         if (status == VXGE_HW_OK) {
2169                 vxge_hw_device_mask_all(hldev);
2170
2171                 if (reason &
2172                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2173                         vdev->vpaths_deployed >>
2174                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2175
2176                         vxge_hw_device_clear_tx_rx(hldev);
2177                         napi_schedule(&vdev->napi);
2178                         vxge_debug_intr(VXGE_TRACE,
2179                                 "%s:%d  Exiting...", __func__, __LINE__);
2180                         return IRQ_HANDLED;
2181                 } else
2182                         vxge_hw_device_unmask_all(hldev);
2183         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2184                 (status == VXGE_HW_ERR_CRITICAL) ||
2185                 (status == VXGE_HW_ERR_FIFO))) {
2186                 vxge_hw_device_mask_all(hldev);
2187                 vxge_hw_device_flush_io(hldev);
2188                 return IRQ_HANDLED;
2189         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2190                 return IRQ_HANDLED;
2191
2192         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2193         return IRQ_NONE;
2194 }
2195
2196 #ifdef CONFIG_PCI_MSI
2197
2198 static irqreturn_t
2199 vxge_tx_msix_handle(int irq, void *dev_id)
2200 {
2201         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2202
2203         VXGE_COMPLETE_VPATH_TX(fifo);
2204
2205         return IRQ_HANDLED;
2206 }
2207
2208 static irqreturn_t
2209 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2210 {
2211         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2212
2213         /* MSIX_IDX for Rx is 1 */
2214         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2215                                         ring->rx_vector_no);
2216
2217         napi_schedule(&ring->napi);
2218         return IRQ_HANDLED;
2219 }
2220
2221 static irqreturn_t
2222 vxge_alarm_msix_handle(int irq, void *dev_id)
2223 {
2224         int i;
2225         enum vxge_hw_status status;
2226         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2227         struct vxgedev *vdev = vpath->vdev;
2228         int alarm_msix_id =
2229                 VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2230
2231         for (i = 0; i < vdev->no_of_vpath; i++) {
2232                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
2233                         alarm_msix_id);
2234
2235                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2236                         vdev->exec_mode);
2237                 if (status == VXGE_HW_OK) {
2238
2239                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2240                                 alarm_msix_id);
2241                         continue;
2242                 }
2243                 vxge_debug_intr(VXGE_ERR,
2244                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2245                         VXGE_DRIVER_NAME, status);
2246         }
2247         return IRQ_HANDLED;
2248 }
2249
2250 static int vxge_alloc_msix(struct vxgedev *vdev)
2251 {
2252         int j, i, ret = 0;
2253         int intr_cnt = 0;
2254         int alarm_msix_id = 0, msix_intr_vect = 0;
2255         vdev->intr_cnt = 0;
2256
2257         /* Tx/Rx MSIX Vectors count */
2258         vdev->intr_cnt = vdev->no_of_vpath * 2;
2259
2260         /* Alarm MSIX Vectors count */
2261         vdev->intr_cnt++;
2262
2263         intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2264         vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
2265                                                 GFP_KERNEL);
2266         if (!vdev->entries) {
2267                 vxge_debug_init(VXGE_ERR,
2268                         "%s: memory allocation failed",
2269                         VXGE_DRIVER_NAME);
2270                 return  -ENOMEM;
2271         }
2272
2273         vdev->vxge_entries = kzalloc(intr_cnt * sizeof(struct vxge_msix_entry),
2274                                                         GFP_KERNEL);
2275         if (!vdev->vxge_entries) {
2276                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2277                         VXGE_DRIVER_NAME);
2278                 kfree(vdev->entries);
2279                 return -ENOMEM;
2280         }
2281
2282         /* Last vector in the list is used for alarm */
2283         alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2284         for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {
2285
2286                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2287
2288                 /* Initialize the fifo vector */
2289                 vdev->entries[j].entry = msix_intr_vect;
2290                 vdev->vxge_entries[j].entry = msix_intr_vect;
2291                 vdev->vxge_entries[j].in_use = 0;
2292                 j++;
2293
2294                 /* Initialize the ring vector */
2295                 vdev->entries[j].entry = msix_intr_vect + 1;
2296                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2297                 vdev->vxge_entries[j].in_use = 0;
2298                 j++;
2299         }
2300
2301         /* Initialize the alarm vector */
2302         vdev->entries[j].entry = alarm_msix_id;
2303         vdev->vxge_entries[j].entry = alarm_msix_id;
2304         vdev->vxge_entries[j].in_use = 0;
2305
2306         ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2307         /* if driver request exceeeds available irq's, request with a small
2308          * number.
2309         */
2310         if (ret > 0) {
2311                 vxge_debug_init(VXGE_ERR,
2312                         "%s: MSI-X enable failed for %d vectors, available: %d",
2313                         VXGE_DRIVER_NAME, intr_cnt, ret);
2314                 vdev->max_vpath_supported = vdev->no_of_vpath;
2315                 intr_cnt = (vdev->max_vpath_supported * 2) + 1;
2316
2317                 /* Reset the alarm vector setting */
2318                 vdev->entries[j].entry = 0;
2319                 vdev->vxge_entries[j].entry = 0;
2320
2321                 /* Initialize the alarm vector with new setting */
2322                 vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
2323                 vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
2324                 vdev->vxge_entries[intr_cnt - 1].in_use = 0;
2325
2326                 ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
2327                 if (!ret)
2328                         vxge_debug_init(VXGE_ERR,
2329                                 "%s: MSI-X enabled for %d vectors",
2330                                 VXGE_DRIVER_NAME, intr_cnt);
2331         }
2332
2333         if (ret) {
2334                 vxge_debug_init(VXGE_ERR,
2335                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2336                         VXGE_DRIVER_NAME, intr_cnt, ret);
2337                 kfree(vdev->entries);
2338                 kfree(vdev->vxge_entries);
2339                 vdev->entries = NULL;
2340                 vdev->vxge_entries = NULL;
2341                 return -ENODEV;
2342         }
2343         return 0;
2344 }
2345
2346 static int vxge_enable_msix(struct vxgedev *vdev)
2347 {
2348
2349         int i, ret = 0;
2350         enum vxge_hw_status status;
2351         /* 0 - Tx, 1 - Rx  */
2352         int tim_msix_id[4];
2353         int alarm_msix_id = 0, msix_intr_vect = 0;
2354         vdev->intr_cnt = 0;
2355
2356         /* allocate msix vectors */
2357         ret = vxge_alloc_msix(vdev);
2358         if (!ret) {
2359                 /* Last vector in the list is used for alarm */
2360                 alarm_msix_id =
2361                         VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
2362                 for (i = 0; i < vdev->no_of_vpath; i++) {
2363
2364                         /* If fifo or ring are not enabled
2365                            the MSIX vector for that should be set to 0
2366                            Hence initializeing this array to all 0s.
2367                         */
2368                         memset(tim_msix_id, 0, sizeof(tim_msix_id));
2369                         msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2370                         tim_msix_id[0] = msix_intr_vect;
2371
2372                         tim_msix_id[1] = msix_intr_vect + 1;
2373                         vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];
2374
2375                         status = vxge_hw_vpath_msix_set(
2376                                                 vdev->vpaths[i].handle,
2377                                                 tim_msix_id, alarm_msix_id);
2378                         if (status != VXGE_HW_OK) {
2379                                 vxge_debug_init(VXGE_ERR,
2380                                         "vxge_hw_vpath_msix_set "
2381                                         "failed with status : %x", status);
2382                                 kfree(vdev->entries);
2383                                 kfree(vdev->vxge_entries);
2384                                 pci_disable_msix(vdev->pdev);
2385                                 return -ENODEV;
2386                         }
2387                 }
2388         }
2389
2390         return ret;
2391 }
2392
2393 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2394 {
2395         int intr_cnt;
2396
2397         for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
2398                 intr_cnt++) {
2399                 if (vdev->vxge_entries[intr_cnt].in_use) {
2400                         synchronize_irq(vdev->entries[intr_cnt].vector);
2401                         free_irq(vdev->entries[intr_cnt].vector,
2402                                 vdev->vxge_entries[intr_cnt].arg);
2403                         vdev->vxge_entries[intr_cnt].in_use = 0;
2404                 }
2405         }
2406
2407         kfree(vdev->entries);
2408         kfree(vdev->vxge_entries);
2409         vdev->entries = NULL;
2410         vdev->vxge_entries = NULL;
2411
2412         if (vdev->config.intr_type == MSI_X)
2413                 pci_disable_msix(vdev->pdev);
2414 }
2415 #endif
2416
2417 static void vxge_rem_isr(struct vxgedev *vdev)
2418 {
2419         struct __vxge_hw_device  *hldev;
2420         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2421
2422 #ifdef CONFIG_PCI_MSI
2423         if (vdev->config.intr_type == MSI_X) {
2424                 vxge_rem_msix_isr(vdev);
2425         } else
2426 #endif
2427         if (vdev->config.intr_type == INTA) {
2428                         synchronize_irq(vdev->pdev->irq);
2429                         free_irq(vdev->pdev->irq, vdev);
2430         }
2431 }
2432
2433 static int vxge_add_isr(struct vxgedev *vdev)
2434 {
2435         int ret = 0;
2436 #ifdef CONFIG_PCI_MSI
2437         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2438         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2439
2440         if (vdev->config.intr_type == MSI_X)
2441                 ret = vxge_enable_msix(vdev);
2442
2443         if (ret) {
2444                 vxge_debug_init(VXGE_ERR,
2445                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2446                 vxge_debug_init(VXGE_ERR,
2447                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2448                 vdev->config.intr_type = INTA;
2449         }
2450
2451         if (vdev->config.intr_type == MSI_X) {
2452                 for (intr_idx = 0;
2453                      intr_idx < (vdev->no_of_vpath *
2454                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2455
2456                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2457                         irq_req = 0;
2458
2459                         switch (msix_idx) {
2460                         case 0:
2461                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2462                                         "%s:vxge fn: %d vpath: %d Tx MSI-X: %d",
2463                                         vdev->ndev->name, pci_fun, vp_idx,
2464                                         vdev->entries[intr_cnt].entry);
2465                                 ret = request_irq(
2466                                     vdev->entries[intr_cnt].vector,
2467                                         vxge_tx_msix_handle, 0,
2468                                         vdev->desc[intr_cnt],
2469                                         &vdev->vpaths[vp_idx].fifo);
2470                                         vdev->vxge_entries[intr_cnt].arg =
2471                                                 &vdev->vpaths[vp_idx].fifo;
2472                                 irq_req = 1;
2473                                 break;
2474                         case 1:
2475                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2476                                         "%s:vxge fn: %d vpath: %d Rx MSI-X: %d",
2477                                         vdev->ndev->name, pci_fun, vp_idx,
2478                                         vdev->entries[intr_cnt].entry);
2479                                 ret = request_irq(
2480                                     vdev->entries[intr_cnt].vector,
2481                                         vxge_rx_msix_napi_handle,
2482                                         0,
2483                                         vdev->desc[intr_cnt],
2484                                         &vdev->vpaths[vp_idx].ring);
2485                                         vdev->vxge_entries[intr_cnt].arg =
2486                                                 &vdev->vpaths[vp_idx].ring;
2487                                 irq_req = 1;
2488                                 break;
2489                         }
2490
2491                         if (ret) {
2492                                 vxge_debug_init(VXGE_ERR,
2493                                         "%s: MSIX - %d  Registration failed",
2494                                         vdev->ndev->name, intr_cnt);
2495                                 vxge_rem_msix_isr(vdev);
2496                                 vdev->config.intr_type = INTA;
2497                                 vxge_debug_init(VXGE_ERR,
2498                                         "%s: Defaulting to INTA"
2499                                         , vdev->ndev->name);
2500                                         goto INTA_MODE;
2501                         }
2502
2503                         if (irq_req) {
2504                                 /* We requested for this msix interrupt */
2505                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2506                                 vxge_hw_vpath_msix_unmask(
2507                                         vdev->vpaths[vp_idx].handle,
2508                                         intr_idx);
2509                                 intr_cnt++;
2510                         }
2511
2512                         /* Point to next vpath handler */
2513                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2514                             (vp_idx < (vdev->no_of_vpath - 1)))
2515                                 vp_idx++;
2516                 }
2517
2518                 intr_cnt = vdev->max_vpath_supported * 2;
2519                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2520                         "%s:vxge Alarm fn: %d MSI-X: %d",
2521                         vdev->ndev->name, pci_fun,
2522                         vdev->entries[intr_cnt].entry);
2523                 /* For Alarm interrupts */
2524                 ret = request_irq(vdev->entries[intr_cnt].vector,
2525                                         vxge_alarm_msix_handle, 0,
2526                                         vdev->desc[intr_cnt],
2527                                         &vdev->vpaths[vp_idx]);
2528                 if (ret) {
2529                         vxge_debug_init(VXGE_ERR,
2530                                 "%s: MSIX - %d Registration failed",
2531                                 vdev->ndev->name, intr_cnt);
2532                         vxge_rem_msix_isr(vdev);
2533                         vdev->config.intr_type = INTA;
2534                         vxge_debug_init(VXGE_ERR,
2535                                 "%s: Defaulting to INTA",
2536                                 vdev->ndev->name);
2537                                 goto INTA_MODE;
2538                 }
2539
2540                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2541                                         intr_idx - 2);
2542                 vdev->vxge_entries[intr_cnt].in_use = 1;
2543                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[vp_idx];
2544         }
2545 INTA_MODE:
2546 #endif
2547         snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);
2548
2549         if (vdev->config.intr_type == INTA) {
2550                 vxge_hw_device_set_intr_type(vdev->devh,
2551                         VXGE_HW_INTR_MODE_IRQLINE);
2552                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2553                         vdev->vpaths[0].device_id);
2554                 ret = request_irq((int) vdev->pdev->irq,
2555                         vxge_isr_napi,
2556                         IRQF_SHARED, vdev->desc[0], vdev);
2557                 if (ret) {
2558                         vxge_debug_init(VXGE_ERR,
2559                                 "%s %s-%d: ISR registration failed",
2560                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2561                         return -ENODEV;
2562                 }
2563                 vxge_debug_init(VXGE_TRACE,
2564                         "new %s-%d line allocated",
2565                         "IRQ", vdev->pdev->irq);
2566         }
2567
2568         return VXGE_HW_OK;
2569 }
2570
2571 static void vxge_poll_vp_reset(unsigned long data)
2572 {
2573         struct vxgedev *vdev = (struct vxgedev *)data;
2574         int i, j = 0;
2575
2576         for (i = 0; i < vdev->no_of_vpath; i++) {
2577                 if (test_bit(i, &vdev->vp_reset)) {
2578                         vxge_reset_vpath(vdev, i);
2579                         j++;
2580                 }
2581         }
2582         if (j && (vdev->config.intr_type != MSI_X)) {
2583                 vxge_hw_device_unmask_all(vdev->devh);
2584                 vxge_hw_device_flush_io(vdev->devh);
2585         }
2586
2587         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2588 }
2589
2590 static void vxge_poll_vp_lockup(unsigned long data)
2591 {
2592         struct vxgedev *vdev = (struct vxgedev *)data;
2593         int i;
2594         struct vxge_ring *ring;
2595         enum vxge_hw_status status = VXGE_HW_OK;
2596
2597         for (i = 0; i < vdev->no_of_vpath; i++) {
2598                 ring = &vdev->vpaths[i].ring;
2599                 /* Did this vpath received any packets */
2600                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2601                         status = vxge_hw_vpath_check_leak(ring->handle);
2602
2603                         /* Did it received any packets last time */
2604                         if ((VXGE_HW_FAIL == status) &&
2605                                 (VXGE_HW_FAIL == ring->last_status)) {
2606
2607                                 /* schedule vpath reset */
2608                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2609
2610                                         /* disable interrupts for this vpath */
2611                                         vxge_vpath_intr_disable(vdev, i);
2612
2613                                         /* stop the queue for this vpath */
2614                                         vxge_stop_tx_queue(&vdev->vpaths[i].
2615                                                                 fifo);
2616                                         continue;
2617                                 }
2618                         }
2619                 }
2620                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2621                 ring->last_status = status;
2622         }
2623
2624         /* Check every 1 milli second */
2625         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2626 }
2627
2628 /**
2629  * vxge_open
2630  * @dev: pointer to the device structure.
2631  *
2632  * This function is the open entry point of the driver. It mainly calls a
2633  * function to allocate Rx buffers and inserts them into the buffer
2634  * descriptors and then enables the Rx part of the NIC.
2635  * Return value: '0' on success and an appropriate (-)ve integer as
2636  * defined in errno.h file on failure.
2637  */
2638 int
2639 vxge_open(struct net_device *dev)
2640 {
2641         enum vxge_hw_status status;
2642         struct vxgedev *vdev;
2643         struct __vxge_hw_device *hldev;
2644         int ret = 0;
2645         int i;
2646         u64 val64, function_mode;
2647         vxge_debug_entryexit(VXGE_TRACE,
2648                 "%s: %s:%d", dev->name, __func__, __LINE__);
2649
2650         vdev = (struct vxgedev *)netdev_priv(dev);
2651         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2652         function_mode = vdev->config.device_hw_info.function_mode;
2653
2654         /* make sure you have link off by default every time Nic is
2655          * initialized */
2656         netif_carrier_off(dev);
2657
2658         /* Open VPATHs */
2659         status = vxge_open_vpaths(vdev);
2660         if (status != VXGE_HW_OK) {
2661                 vxge_debug_init(VXGE_ERR,
2662                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2663                 ret = -EPERM;
2664                 goto out0;
2665         }
2666
2667         vdev->mtu = dev->mtu;
2668
2669         status = vxge_add_isr(vdev);
2670         if (status != VXGE_HW_OK) {
2671                 vxge_debug_init(VXGE_ERR,
2672                         "%s: fatal: ISR add failed", dev->name);
2673                 ret = -EPERM;
2674                 goto out1;
2675         }
2676
2677
2678         if (vdev->config.intr_type != MSI_X) {
2679                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2680                         vdev->config.napi_weight);
2681                 napi_enable(&vdev->napi);
2682                 for (i = 0; i < vdev->no_of_vpath; i++)
2683                         vdev->vpaths[i].ring.napi_p = &vdev->napi;
2684         } else {
2685                 for (i = 0; i < vdev->no_of_vpath; i++) {
2686                         netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2687                             vxge_poll_msix, vdev->config.napi_weight);
2688                         napi_enable(&vdev->vpaths[i].ring.napi);
2689                         vdev->vpaths[i].ring.napi_p =
2690                                 &vdev->vpaths[i].ring.napi;
2691                 }
2692         }
2693
2694         /* configure RTH */
2695         if (vdev->config.rth_steering) {
2696                 status = vxge_rth_configure(vdev);
2697                 if (status != VXGE_HW_OK) {
2698                         vxge_debug_init(VXGE_ERR,
2699                                 "%s: fatal: RTH configuration failed",
2700                                 dev->name);
2701                         ret = -EPERM;
2702                         goto out2;
2703                 }
2704         }
2705
2706         for (i = 0; i < vdev->no_of_vpath; i++) {
2707                 /* set initial mtu before enabling the device */
2708                 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2709                                                 vdev->mtu);
2710                 if (status != VXGE_HW_OK) {
2711                         vxge_debug_init(VXGE_ERR,
2712                                 "%s: fatal: can not set new MTU", dev->name);
2713                         ret = -EPERM;
2714                         goto out2;
2715                 }
2716         }
2717
2718         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2719         vxge_debug_init(vdev->level_trace,
2720                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2721         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2722
2723         /* Reprogram the DA table with populated mac addresses */
2724         for (i = 0; i < vdev->no_of_vpath; i++) {
2725                 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2726                 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2727         }
2728
2729         /* Enable vpath to sniff all unicast/multicast traffic that not
2730          * addressed to them. We allow promiscous mode for PF only
2731          */
2732
2733         val64 = 0;
2734         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2735                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2736
2737         vxge_hw_mgmt_reg_write(vdev->devh,
2738                 vxge_hw_mgmt_reg_type_mrpcim,
2739                 0,
2740                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2741                         rxmac_authorize_all_addr),
2742                 val64);
2743
2744         vxge_hw_mgmt_reg_write(vdev->devh,
2745                 vxge_hw_mgmt_reg_type_mrpcim,
2746                 0,
2747                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2748                         rxmac_authorize_all_vid),
2749                 val64);
2750
2751         vxge_set_multicast(dev);
2752
2753         /* Enabling Bcast and mcast for all vpath */
2754         for (i = 0; i < vdev->no_of_vpath; i++) {
2755                 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2756                 if (status != VXGE_HW_OK)
2757                         vxge_debug_init(VXGE_ERR,
2758                                 "%s : Can not enable bcast for vpath "
2759                                 "id %d", dev->name, i);
2760                 if (vdev->config.addr_learn_en) {
2761                         status =
2762                             vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2763                         if (status != VXGE_HW_OK)
2764                                 vxge_debug_init(VXGE_ERR,
2765                                         "%s : Can not enable mcast for vpath "
2766                                         "id %d", dev->name, i);
2767                 }
2768         }
2769
2770         vxge_hw_device_setpause_data(vdev->devh, 0,
2771                 vdev->config.tx_pause_enable,
2772                 vdev->config.rx_pause_enable);
2773
2774         if (vdev->vp_reset_timer.function == NULL)
2775                 vxge_os_timer(vdev->vp_reset_timer,
2776                         vxge_poll_vp_reset, vdev, (HZ/2));
2777
2778         if (vdev->vp_lockup_timer.function == NULL)
2779                 vxge_os_timer(vdev->vp_lockup_timer,
2780                         vxge_poll_vp_lockup, vdev, (HZ/2));
2781
2782         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2783
2784         smp_wmb();
2785
2786         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2787                 netif_carrier_on(vdev->ndev);
2788                 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2789                 vdev->stats.link_up++;
2790         }
2791
2792         vxge_hw_device_intr_enable(vdev->devh);
2793
2794         smp_wmb();
2795
2796         for (i = 0; i < vdev->no_of_vpath; i++) {
2797                 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2798                 smp_wmb();
2799                 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2800         }
2801
2802         vxge_start_all_tx_queue(vdev);
2803         goto out0;
2804
2805 out2:
2806         vxge_rem_isr(vdev);
2807
2808         /* Disable napi */
2809         if (vdev->config.intr_type != MSI_X)
2810                 napi_disable(&vdev->napi);
2811         else {
2812                 for (i = 0; i < vdev->no_of_vpath; i++)
2813                         napi_disable(&vdev->vpaths[i].ring.napi);
2814         }
2815
2816 out1:
2817         vxge_close_vpaths(vdev, 0);
2818 out0:
2819         vxge_debug_entryexit(VXGE_TRACE,
2820                                 "%s: %s:%d  Exiting...",
2821                                 dev->name, __func__, __LINE__);
2822         return ret;
2823 }
2824
2825 /* Loop throught the mac address list and delete all the entries */
2826 void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2827 {
2828
2829         struct list_head *entry, *next;
2830         if (list_empty(&vpath->mac_addr_list))
2831                 return;
2832
2833         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2834                 list_del(entry);
2835                 kfree((struct vxge_mac_addrs *)entry);
2836         }
2837 }
2838
2839 static void vxge_napi_del_all(struct vxgedev *vdev)
2840 {
2841         int i;
2842         if (vdev->config.intr_type != MSI_X)
2843                 netif_napi_del(&vdev->napi);
2844         else {
2845                 for (i = 0; i < vdev->no_of_vpath; i++)
2846                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2847         }
2848         return;
2849 }
2850
2851 int do_vxge_close(struct net_device *dev, int do_io)
2852 {
2853         enum vxge_hw_status status;
2854         struct vxgedev *vdev;
2855         struct __vxge_hw_device *hldev;
2856         int i;
2857         u64 val64, vpath_vector;
2858         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2859                 dev->name, __func__, __LINE__);
2860
2861         vdev = (struct vxgedev *)netdev_priv(dev);
2862         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2863
2864         if (unlikely(!is_vxge_card_up(vdev)))
2865                 return 0;
2866
2867         /* If vxge_handle_crit_err task is executing,
2868          * wait till it completes. */
2869         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2870                 msleep(50);
2871
2872         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2873         if (do_io) {
2874                 /* Put the vpath back in normal mode */
2875                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2876                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2877                                 vxge_hw_mgmt_reg_type_mrpcim,
2878                                 0,
2879                                 (ulong)offsetof(
2880                                         struct vxge_hw_mrpcim_reg,
2881                                         rts_mgr_cbasin_cfg),
2882                                 &val64);
2883
2884                 if (status == VXGE_HW_OK) {
2885                         val64 &= ~vpath_vector;
2886                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2887                                         vxge_hw_mgmt_reg_type_mrpcim,
2888                                         0,
2889                                         (ulong)offsetof(
2890                                                 struct vxge_hw_mrpcim_reg,
2891                                                 rts_mgr_cbasin_cfg),
2892                                         val64);
2893                 }
2894
2895                 /* Remove the function 0 from promiscous mode */
2896                 vxge_hw_mgmt_reg_write(vdev->devh,
2897                         vxge_hw_mgmt_reg_type_mrpcim,
2898                         0,
2899                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2900                                 rxmac_authorize_all_addr),
2901                         0);
2902
2903                 vxge_hw_mgmt_reg_write(vdev->devh,
2904                         vxge_hw_mgmt_reg_type_mrpcim,
2905                         0,
2906                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2907                                 rxmac_authorize_all_vid),
2908                         0);
2909
2910                 smp_wmb();
2911         }
2912         del_timer_sync(&vdev->vp_lockup_timer);
2913
2914         del_timer_sync(&vdev->vp_reset_timer);
2915
2916         /* Disable napi */
2917         if (vdev->config.intr_type != MSI_X)
2918                 napi_disable(&vdev->napi);
2919         else {
2920                 for (i = 0; i < vdev->no_of_vpath; i++)
2921                         napi_disable(&vdev->vpaths[i].ring.napi);
2922         }
2923
2924         netif_carrier_off(vdev->ndev);
2925         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2926         vxge_stop_all_tx_queue(vdev);
2927
2928         /* Note that at this point xmit() is stopped by upper layer */
2929         if (do_io)
2930                 vxge_hw_device_intr_disable(vdev->devh);
2931
2932         mdelay(1000);
2933
2934         vxge_rem_isr(vdev);
2935
2936         vxge_napi_del_all(vdev);
2937
2938         if (do_io)
2939                 vxge_reset_all_vpaths(vdev);
2940
2941         vxge_close_vpaths(vdev, 0);
2942
2943         vxge_debug_entryexit(VXGE_TRACE,
2944                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2945
2946         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2947
2948         return 0;
2949 }
2950
2951 /**
2952  * vxge_close
2953  * @dev: device pointer.
2954  *
2955  * This is the stop entry point of the driver. It needs to undo exactly
2956  * whatever was done by the open entry point, thus it's usually referred to
2957  * as the close function.Among other things this function mainly stops the
2958  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2959  * Return value: '0' on success and an appropriate (-)ve integer as
2960  * defined in errno.h file on failure.
2961  */
2962 int
2963 vxge_close(struct net_device *dev)
2964 {
2965         do_vxge_close(dev, 1);
2966         return 0;
2967 }
2968
2969 /**
2970  * vxge_change_mtu
2971  * @dev: net device pointer.
2972  * @new_mtu :the new MTU size for the device.
2973  *
2974  * A driver entry point to change MTU size for the device. Before changing
2975  * the MTU the device must be stopped.
2976  */
2977 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2978 {
2979         struct vxgedev *vdev = netdev_priv(dev);
2980
2981         vxge_debug_entryexit(vdev->level_trace,
2982                 "%s:%d", __func__, __LINE__);
2983         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2984                 vxge_debug_init(vdev->level_err,
2985                         "%s: mtu size is invalid", dev->name);
2986                 return -EPERM;
2987         }
2988
2989         /* check if device is down already */
2990         if (unlikely(!is_vxge_card_up(vdev))) {
2991                 /* just store new value, will use later on open() */
2992                 dev->mtu = new_mtu;
2993                 vxge_debug_init(vdev->level_err,
2994                         "%s", "device is down on MTU change");
2995                 return 0;
2996         }
2997
2998         vxge_debug_init(vdev->level_trace,
2999                 "trying to apply new MTU %d", new_mtu);
3000
3001         if (vxge_close(dev))
3002                 return -EIO;
3003
3004         dev->mtu = new_mtu;
3005         vdev->mtu = new_mtu;
3006
3007         if (vxge_open(dev))
3008                 return -EIO;
3009
3010         vxge_debug_init(vdev->level_trace,
3011                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3012
3013         vxge_debug_entryexit(vdev->level_trace,
3014                 "%s:%d  Exiting...", __func__, __LINE__);
3015
3016         return 0;
3017 }
3018
3019 /**
3020  * vxge_get_stats
3021  * @dev: pointer to the device structure
3022  *
3023  * Updates the device statistics structure. This function updates the device
3024  * statistics structure in the net_device structure and returns a pointer
3025  * to the same.
3026  */
3027 static struct net_device_stats *
3028 vxge_get_stats(struct net_device *dev)
3029 {
3030         struct vxgedev *vdev;
3031         struct net_device_stats *net_stats;
3032         int k;
3033
3034         vdev = netdev_priv(dev);
3035
3036         net_stats = &vdev->stats.net_stats;
3037
3038         memset(net_stats, 0, sizeof(struct net_device_stats));
3039
3040         for (k = 0; k < vdev->no_of_vpath; k++) {
3041                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3042                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3043                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3044                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3045                 net_stats->rx_dropped +=
3046                         vdev->vpaths[k].ring.stats.rx_dropped;
3047
3048                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3049                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3050                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3051         }
3052
3053         return net_stats;
3054 }
3055
3056 /**
3057  * vxge_ioctl
3058  * @dev: Device pointer.
3059  * @ifr: An IOCTL specific structure, that can contain a pointer to
3060  *       a proprietary structure used to pass information to the driver.
3061  * @cmd: This is used to distinguish between the different commands that
3062  *       can be passed to the IOCTL functions.
3063  *
3064  * Entry point for the Ioctl.
3065  */
3066 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3067 {
3068         return -EOPNOTSUPP;
3069 }
3070
3071 /**
3072  * vxge_tx_watchdog
3073  * @dev: pointer to net device structure
3074  *
3075  * Watchdog for transmit side.
3076  * This function is triggered if the Tx Queue is stopped
3077  * for a pre-defined amount of time when the Interface is still up.
3078  */
3079 static void
3080 vxge_tx_watchdog(struct net_device *dev)
3081 {
3082         struct vxgedev *vdev;
3083
3084         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3085
3086         vdev = (struct vxgedev *)netdev_priv(dev);
3087
3088         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3089
3090         vxge_reset(vdev);
3091         vxge_debug_entryexit(VXGE_TRACE,
3092                 "%s:%d  Exiting...", __func__, __LINE__);
3093 }
3094
3095 /**
3096  * vxge_vlan_rx_register
3097  * @dev: net device pointer.
3098  * @grp: vlan group
3099  *
3100  * Vlan group registration
3101  */
3102 static void
3103 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3104 {
3105         struct vxgedev *vdev;
3106         struct vxge_vpath *vpath;
3107         int vp;
3108         u64 vid;
3109         enum vxge_hw_status status;
3110         int i;
3111
3112         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3113
3114         vdev = (struct vxgedev *)netdev_priv(dev);
3115
3116         vpath = &vdev->vpaths[0];
3117         if ((NULL == grp) && (vpath->is_open)) {
3118                 /* Get the first vlan */
3119                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3120
3121                 while (status == VXGE_HW_OK) {
3122
3123                         /* Delete this vlan from the vid table */
3124                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3125                                 vpath = &vdev->vpaths[vp];
3126                                 if (!vpath->is_open)
3127                                         continue;
3128
3129                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3130                         }
3131
3132                         /* Get the next vlan to be deleted */
3133                         vpath = &vdev->vpaths[0];
3134                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3135                 }
3136         }
3137
3138         vdev->vlgrp = grp;
3139
3140         for (i = 0; i < vdev->no_of_vpath; i++) {
3141                 if (vdev->vpaths[i].is_configured)
3142                         vdev->vpaths[i].ring.vlgrp = grp;
3143         }
3144
3145         vxge_debug_entryexit(VXGE_TRACE,
3146                 "%s:%d  Exiting...", __func__, __LINE__);
3147 }
3148
3149 /**
3150  * vxge_vlan_rx_add_vid
3151  * @dev: net device pointer.
3152  * @vid: vid
3153  *
3154  * Add the vlan id to the devices vlan id table
3155  */
3156 static void
3157 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3158 {
3159         struct vxgedev *vdev;
3160         struct vxge_vpath *vpath;
3161         int vp_id;
3162
3163         vdev = (struct vxgedev *)netdev_priv(dev);
3164
3165         /* Add these vlan to the vid table */
3166         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3167                 vpath = &vdev->vpaths[vp_id];
3168                 if (!vpath->is_open)
3169                         continue;
3170                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3171         }
3172 }
3173
3174 /**
3175  * vxge_vlan_rx_add_vid
3176  * @dev: net device pointer.
3177  * @vid: vid
3178  *
3179  * Remove the vlan id from the device's vlan id table
3180  */
3181 static void
3182 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3183 {
3184         struct vxgedev *vdev;
3185         struct vxge_vpath *vpath;
3186         int vp_id;
3187
3188         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3189
3190         vdev = (struct vxgedev *)netdev_priv(dev);
3191
3192         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3193
3194         /* Delete this vlan from the vid table */
3195         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3196                 vpath = &vdev->vpaths[vp_id];
3197                 if (!vpath->is_open)
3198                         continue;
3199                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3200         }
3201         vxge_debug_entryexit(VXGE_TRACE,
3202                 "%s:%d  Exiting...", __func__, __LINE__);
3203 }
3204
3205 static const struct net_device_ops vxge_netdev_ops = {
3206         .ndo_open               = vxge_open,
3207         .ndo_stop               = vxge_close,
3208         .ndo_get_stats          = vxge_get_stats,
3209         .ndo_start_xmit         = vxge_xmit,
3210         .ndo_validate_addr      = eth_validate_addr,
3211         .ndo_set_multicast_list = vxge_set_multicast,
3212
3213         .ndo_do_ioctl           = vxge_ioctl,
3214
3215         .ndo_set_mac_address    = vxge_set_mac_addr,
3216         .ndo_change_mtu         = vxge_change_mtu,
3217         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3218         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3219         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3220
3221         .ndo_tx_timeout         = vxge_tx_watchdog,
3222 #ifdef CONFIG_NET_POLL_CONTROLLER
3223         .ndo_poll_controller    = vxge_netpoll,
3224 #endif
3225 };
3226
3227 int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3228                                    struct vxge_config *config,
3229                                    int high_dma, int no_of_vpath,
3230                                    struct vxgedev **vdev_out)
3231 {
3232         struct net_device *ndev;
3233         enum vxge_hw_status status = VXGE_HW_OK;
3234         struct vxgedev *vdev;
3235         int i, ret = 0, no_of_queue = 1;
3236         u64 stat;
3237
3238         *vdev_out = NULL;
3239         if (config->tx_steering_type == TX_MULTIQ_STEERING)
3240                 no_of_queue = no_of_vpath;
3241
3242         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3243                         no_of_queue);
3244         if (ndev == NULL) {
3245                 vxge_debug_init(
3246                         vxge_hw_device_trace_level_get(hldev),
3247                 "%s : device allocation failed", __func__);
3248                 ret = -ENODEV;
3249                 goto _out0;
3250         }
3251
3252         vxge_debug_entryexit(
3253                 vxge_hw_device_trace_level_get(hldev),
3254                 "%s: %s:%d  Entering...",
3255                 ndev->name, __func__, __LINE__);
3256
3257         vdev = netdev_priv(ndev);
3258         memset(vdev, 0, sizeof(struct vxgedev));
3259
3260         vdev->ndev = ndev;
3261         vdev->devh = hldev;
3262         vdev->pdev = hldev->pdev;
3263         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3264         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3265
3266         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3267
3268         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3269                                 NETIF_F_HW_VLAN_FILTER;
3270         /*  Driver entry points */
3271         ndev->irq = vdev->pdev->irq;
3272         ndev->base_addr = (unsigned long) hldev->bar0;
3273
3274         ndev->netdev_ops = &vxge_netdev_ops;
3275
3276         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3277
3278         initialize_ethtool_ops(ndev);
3279
3280         /* Allocate memory for vpath */
3281         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3282                                 no_of_vpath, GFP_KERNEL);
3283         if (!vdev->vpaths) {
3284                 vxge_debug_init(VXGE_ERR,
3285                         "%s: vpath memory allocation failed",
3286                         vdev->ndev->name);
3287                 ret = -ENODEV;
3288                 goto _out1;
3289         }
3290
3291         ndev->features |= NETIF_F_SG;
3292
3293         ndev->features |= NETIF_F_HW_CSUM;
3294         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3295                 "%s : checksuming enabled", __func__);
3296
3297         if (high_dma) {
3298                 ndev->features |= NETIF_F_HIGHDMA;
3299                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3300                         "%s : using High DMA", __func__);
3301         }
3302
3303         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3304
3305         if (vdev->config.gro_enable)
3306                 ndev->features |= NETIF_F_GRO;
3307
3308         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3309                 ndev->real_num_tx_queues = no_of_vpath;
3310
3311 #ifdef NETIF_F_LLTX
3312         ndev->features |= NETIF_F_LLTX;
3313 #endif
3314
3315         for (i = 0; i < no_of_vpath; i++)
3316                 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3317
3318         if (register_netdev(ndev)) {
3319                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3320                         "%s: %s : device registration failed!",
3321                         ndev->name, __func__);
3322                 ret = -ENODEV;
3323                 goto _out2;
3324         }
3325
3326         /*  Set the factory defined MAC address initially */
3327         ndev->addr_len = ETH_ALEN;
3328
3329         /* Make Link state as off at this point, when the Link change
3330          * interrupt comes the state will be automatically changed to
3331          * the right state.
3332          */
3333         netif_carrier_off(ndev);
3334
3335         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3336                 "%s: Ethernet device registered",
3337                 ndev->name);
3338
3339         *vdev_out = vdev;
3340
3341         /* Resetting the Device stats */
3342         status = vxge_hw_mrpcim_stats_access(
3343                                 hldev,
3344                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3345                                 0,
3346                                 0,
3347                                 &stat);
3348
3349         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3350                 vxge_debug_init(
3351                         vxge_hw_device_trace_level_get(hldev),
3352                         "%s: device stats clear returns"
3353                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3354
3355         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3356                 "%s: %s:%d  Exiting...",
3357                 ndev->name, __func__, __LINE__);
3358
3359         return ret;
3360 _out2:
3361         kfree(vdev->vpaths);
3362 _out1:
3363         free_netdev(ndev);
3364 _out0:
3365         return ret;
3366 }
3367
3368 /*
3369  * vxge_device_unregister
3370  *
3371  * This function will unregister and free network device
3372  */
3373 void
3374 vxge_device_unregister(struct __vxge_hw_device *hldev)
3375 {
3376         struct vxgedev *vdev;
3377         struct net_device *dev;
3378         char buf[IFNAMSIZ];
3379 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3380         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3381         u32 level_trace;
3382 #endif
3383
3384         dev = hldev->ndev;
3385         vdev = netdev_priv(dev);
3386 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3387         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3388         level_trace = vdev->level_trace;
3389 #endif
3390         vxge_debug_entryexit(level_trace,
3391                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3392
3393         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3394
3395         /* in 2.6 will call stop() if device is up */
3396         unregister_netdev(dev);
3397
3398         flush_scheduled_work();
3399
3400         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3401         vxge_debug_entryexit(level_trace,
3402                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3403 }
3404
3405 /*
3406  * vxge_callback_crit_err
3407  *
3408  * This function is called by the alarm handler in interrupt context.
3409  * Driver must analyze it based on the event type.
3410  */
3411 static void
3412 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3413                         enum vxge_hw_event type, u64 vp_id)
3414 {
3415         struct net_device *dev = hldev->ndev;
3416         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3417         int vpath_idx;
3418
3419         vxge_debug_entryexit(vdev->level_trace,
3420                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3421
3422         /* Note: This event type should be used for device wide
3423          * indications only - Serious errors, Slot freeze and critical errors
3424          */
3425         vdev->cric_err_event = type;
3426
3427         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3428                 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3429                         break;
3430
3431         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3432                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3433                         vxge_debug_init(VXGE_ERR,
3434                                 "%s: Slot is frozen", vdev->ndev->name);
3435                 } else if (type == VXGE_HW_EVENT_SERR) {
3436                         vxge_debug_init(VXGE_ERR,
3437                                 "%s: Encountered Serious Error",
3438                                 vdev->ndev->name);
3439                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3440                         vxge_debug_init(VXGE_ERR,
3441                                 "%s: Encountered Critical Error",
3442                                 vdev->ndev->name);
3443         }
3444
3445         if ((type == VXGE_HW_EVENT_SERR) ||
3446                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3447                 if (unlikely(vdev->exec_mode))
3448                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3449         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3450                 vxge_hw_device_mask_all(hldev);
3451                 if (unlikely(vdev->exec_mode))
3452                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3453         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3454                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3455
3456                 if (unlikely(vdev->exec_mode))
3457                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3458                 else {
3459                         /* check if this vpath is already set for reset */
3460                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3461
3462                                 /* disable interrupts for this vpath */
3463                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3464
3465                                 /* stop the queue for this vpath */
3466                                 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3467                                                         fifo);
3468                         }
3469                 }
3470         }
3471
3472         vxge_debug_entryexit(vdev->level_trace,
3473                 "%s: %s:%d  Exiting...",
3474                 vdev->ndev->name, __func__, __LINE__);
3475 }
3476
3477 static void verify_bandwidth(void)
3478 {
3479         int i, band_width, total = 0, equal_priority = 0;
3480
3481         /* 1. If user enters 0 for some fifo, give equal priority to all */
3482         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3483                 if (bw_percentage[i] == 0) {
3484                         equal_priority = 1;
3485                         break;
3486                 }
3487         }
3488
3489         if (!equal_priority) {
3490                 /* 2. If sum exceeds 100, give equal priority to all */
3491                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3492                         if (bw_percentage[i] == 0xFF)
3493                                 break;
3494
3495                         total += bw_percentage[i];
3496                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3497                                 equal_priority = 1;
3498                                 break;
3499                         }
3500                 }
3501         }
3502
3503         if (!equal_priority) {
3504                 /* Is all the bandwidth consumed? */
3505                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3506                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3507                                 /* Split rest of bw equally among next VPs*/
3508                                 band_width =
3509                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3510                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3511                                 if (band_width < 2) /* min of 2% */
3512                                         equal_priority = 1;
3513                                 else {
3514                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3515                                                 i++)
3516                                                 bw_percentage[i] =
3517                                                         band_width;
3518                                 }
3519                         }
3520                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3521                         equal_priority = 1;
3522         }
3523
3524         if (equal_priority) {
3525                 vxge_debug_init(VXGE_ERR,
3526                         "%s: Assigning equal bandwidth to all the vpaths",
3527                         VXGE_DRIVER_NAME);
3528                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3529                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3530                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3531                         bw_percentage[i] = bw_percentage[0];
3532         }
3533
3534         return;
3535 }
3536
3537 /*
3538  * Vpath configuration
3539  */
3540 static int __devinit vxge_config_vpaths(
3541                         struct vxge_hw_device_config *device_config,
3542                         u64 vpath_mask, struct vxge_config *config_param)
3543 {
3544         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3545         u32 txdl_size, txdl_per_memblock;
3546
3547         temp = driver_config->vpath_per_dev;
3548         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3549                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3550                 /* No more CPU. Return vpath number as zero.*/
3551                 if (driver_config->g_no_cpus == -1)
3552                         return 0;
3553
3554                 if (!driver_config->g_no_cpus)
3555                         driver_config->g_no_cpus = num_online_cpus();
3556
3557                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3558                 if (!driver_config->vpath_per_dev)
3559                         driver_config->vpath_per_dev = 1;
3560
3561                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3562                         if (!vxge_bVALn(vpath_mask, i, 1))
3563                                 continue;
3564                         else
3565                                 default_no_vpath++;
3566                 if (default_no_vpath < driver_config->vpath_per_dev)
3567                         driver_config->vpath_per_dev = default_no_vpath;
3568
3569                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3570                                 (driver_config->vpath_per_dev * 2);
3571                 if (driver_config->g_no_cpus <= 0)
3572                         driver_config->g_no_cpus = -1;
3573         }
3574
3575         if (driver_config->vpath_per_dev == 1) {
3576                 vxge_debug_ll_config(VXGE_TRACE,
3577                         "%s: Disable tx and rx steering, "
3578                         "as single vpath is configured", VXGE_DRIVER_NAME);
3579                 config_param->rth_steering = NO_STEERING;
3580                 config_param->tx_steering_type = NO_STEERING;
3581                 device_config->rth_en = 0;
3582         }
3583
3584         /* configure bandwidth */
3585         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3586                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3587
3588         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3589                 device_config->vp_config[i].vp_id = i;
3590                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3591                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3592                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3593                                 vxge_debug_ll_config(VXGE_TRACE,
3594                                         "%s: vpath: %d is not available",
3595                                         VXGE_DRIVER_NAME, i);
3596                                 continue;
3597                         } else {
3598                                 vxge_debug_ll_config(VXGE_TRACE,
3599                                         "%s: vpath: %d available",
3600                                         VXGE_DRIVER_NAME, i);
3601                                 no_of_vpaths++;
3602                         }
3603                 } else {
3604                         vxge_debug_ll_config(VXGE_TRACE,
3605                                 "%s: vpath: %d is not configured, "
3606                                 "max_config_vpath exceeded",
3607                                 VXGE_DRIVER_NAME, i);
3608                         break;
3609                 }
3610
3611                 /* Configure Tx fifo's */
3612                 device_config->vp_config[i].fifo.enable =
3613                                                 VXGE_HW_FIFO_ENABLE;
3614                 device_config->vp_config[i].fifo.max_frags =
3615                                 MAX_SKB_FRAGS + 1;
3616                 device_config->vp_config[i].fifo.memblock_size =
3617                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3618
3619                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3620                                 sizeof(struct vxge_hw_fifo_txd);
3621                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3622
3623                 device_config->vp_config[i].fifo.fifo_blocks =
3624                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3625
3626                 device_config->vp_config[i].fifo.intr =
3627                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3628
3629                 /* Configure tti properties */
3630                 device_config->vp_config[i].tti.intr_enable =
3631                                         VXGE_HW_TIM_INTR_ENABLE;
3632
3633                 device_config->vp_config[i].tti.btimer_val =
3634                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3635
3636                 device_config->vp_config[i].tti.timer_ac_en =
3637                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3638
3639                 /* For msi-x with napi (each vector
3640                 has a handler of its own) -
3641                 Set CI to OFF for all vpaths */
3642                 device_config->vp_config[i].tti.timer_ci_en =
3643                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3644
3645                 device_config->vp_config[i].tti.timer_ri_en =
3646                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3647
3648                 device_config->vp_config[i].tti.util_sel =
3649                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3650
3651                 device_config->vp_config[i].tti.ltimer_val =
3652                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3653
3654                 device_config->vp_config[i].tti.rtimer_val =
3655                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3656
3657                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3658                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3659                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3660                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3661                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3662                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3663                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3664
3665                 /* Configure Rx rings */
3666                 device_config->vp_config[i].ring.enable  =
3667                                                 VXGE_HW_RING_ENABLE;
3668
3669                 device_config->vp_config[i].ring.ring_blocks  =
3670                                                 VXGE_HW_DEF_RING_BLOCKS;
3671                 device_config->vp_config[i].ring.buffer_mode =
3672                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3673                 device_config->vp_config[i].ring.rxds_limit  =
3674                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3675                 device_config->vp_config[i].ring.scatter_mode =
3676                                         VXGE_HW_RING_SCATTER_MODE_A;
3677
3678                 /* Configure rti properties */
3679                 device_config->vp_config[i].rti.intr_enable =
3680                                         VXGE_HW_TIM_INTR_ENABLE;
3681
3682                 device_config->vp_config[i].rti.btimer_val =
3683                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3684
3685                 device_config->vp_config[i].rti.timer_ac_en =
3686                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3687
3688                 device_config->vp_config[i].rti.timer_ci_en =
3689                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3690
3691                 device_config->vp_config[i].rti.timer_ri_en =
3692                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3693
3694                 device_config->vp_config[i].rti.util_sel =
3695                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3696
3697                 device_config->vp_config[i].rti.urange_a =
3698                                                 RTI_RX_URANGE_A;
3699                 device_config->vp_config[i].rti.urange_b =
3700                                                 RTI_RX_URANGE_B;
3701                 device_config->vp_config[i].rti.urange_c =
3702                                                 RTI_RX_URANGE_C;
3703                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3704                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3705                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3706                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3707
3708                 device_config->vp_config[i].rti.rtimer_val =
3709                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3710
3711                 device_config->vp_config[i].rti.ltimer_val =
3712                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3713
3714                 device_config->vp_config[i].rpa_strip_vlan_tag =
3715                         vlan_tag_strip;
3716         }
3717
3718         driver_config->vpath_per_dev = temp;
3719         return no_of_vpaths;
3720 }
3721
3722 /* initialize device configuratrions */
3723 static void __devinit vxge_device_config_init(
3724                                 struct vxge_hw_device_config *device_config,
3725                                 int *intr_type)
3726 {
3727         /* Used for CQRQ/SRQ. */
3728         device_config->dma_blockpool_initial =
3729                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3730
3731         device_config->dma_blockpool_max =
3732                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3733
3734         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3735                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3736
3737 #ifndef CONFIG_PCI_MSI
3738         vxge_debug_init(VXGE_ERR,
3739                 "%s: This Kernel does not support "
3740                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3741         *intr_type = INTA;
3742 #endif
3743
3744         /* Configure whether MSI-X or IRQL. */
3745         switch (*intr_type) {
3746         case INTA:
3747                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3748                 break;
3749
3750         case MSI_X:
3751                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3752                 break;
3753         }
3754         /* Timer period between device poll */
3755         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3756
3757         /* Configure mac based steering. */
3758         device_config->rts_mac_en = addr_learn_en;
3759
3760         /* Configure Vpaths */
3761         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3762
3763         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3764                         __func__);
3765         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3766                         device_config->dma_blockpool_initial);
3767         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3768                         device_config->dma_blockpool_max);
3769         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3770                         device_config->intr_mode);
3771         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3772                         device_config->device_poll_millis);
3773         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3774                         device_config->rts_mac_en);
3775         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3776                         device_config->rth_en);
3777         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3778                         device_config->rth_it_type);
3779 }
3780
3781 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3782 {
3783         int i;
3784
3785         vxge_debug_init(VXGE_TRACE,
3786                 "%s: %d Vpath(s) opened",
3787                 vdev->ndev->name, vdev->no_of_vpath);
3788
3789         switch (vdev->config.intr_type) {
3790         case INTA:
3791                 vxge_debug_init(VXGE_TRACE,
3792                         "%s: Interrupt type INTA", vdev->ndev->name);
3793                 break;
3794
3795         case MSI_X:
3796                 vxge_debug_init(VXGE_TRACE,
3797                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3798                 break;
3799         }
3800
3801         if (vdev->config.rth_steering) {
3802                 vxge_debug_init(VXGE_TRACE,
3803                         "%s: RTH steering enabled for TCP_IPV4",
3804                         vdev->ndev->name);
3805         } else {
3806                 vxge_debug_init(VXGE_TRACE,
3807                         "%s: RTH steering disabled", vdev->ndev->name);
3808         }
3809
3810         switch (vdev->config.tx_steering_type) {
3811         case NO_STEERING:
3812                 vxge_debug_init(VXGE_TRACE,
3813                         "%s: Tx steering disabled", vdev->ndev->name);
3814                 break;
3815         case TX_PRIORITY_STEERING:
3816                 vxge_debug_init(VXGE_TRACE,
3817                         "%s: Unsupported tx steering option",
3818                         vdev->ndev->name);
3819                 vxge_debug_init(VXGE_TRACE,
3820                         "%s: Tx steering disabled", vdev->ndev->name);
3821                 vdev->config.tx_steering_type = 0;
3822                 break;
3823         case TX_VLAN_STEERING:
3824                 vxge_debug_init(VXGE_TRACE,
3825                         "%s: Unsupported tx steering option",
3826                         vdev->ndev->name);
3827                 vxge_debug_init(VXGE_TRACE,
3828                         "%s: Tx steering disabled", vdev->ndev->name);
3829                 vdev->config.tx_steering_type = 0;
3830                 break;
3831         case TX_MULTIQ_STEERING:
3832                 vxge_debug_init(VXGE_TRACE,
3833                         "%s: Tx multiqueue steering enabled",
3834                         vdev->ndev->name);
3835                 break;
3836         case TX_PORT_STEERING:
3837                 vxge_debug_init(VXGE_TRACE,
3838                         "%s: Tx port steering enabled",
3839                         vdev->ndev->name);
3840                 break;
3841         default:
3842                 vxge_debug_init(VXGE_ERR,
3843                         "%s: Unsupported tx steering type",
3844                         vdev->ndev->name);
3845                 vxge_debug_init(VXGE_TRACE,
3846                         "%s: Tx steering disabled", vdev->ndev->name);
3847                 vdev->config.tx_steering_type = 0;
3848         }
3849
3850         if (vdev->config.gro_enable) {
3851                 vxge_debug_init(VXGE_ERR,
3852                         "%s: Generic receive offload enabled",
3853                         vdev->ndev->name);
3854         } else
3855                 vxge_debug_init(VXGE_TRACE,
3856                         "%s: Generic receive offload disabled",
3857                         vdev->ndev->name);
3858
3859         if (vdev->config.addr_learn_en)
3860                 vxge_debug_init(VXGE_TRACE,
3861                         "%s: MAC Address learning enabled", vdev->ndev->name);
3862
3863         vxge_debug_init(VXGE_TRACE,
3864                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3865
3866         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3867                 if (!vxge_bVALn(vpath_mask, i, 1))
3868                         continue;
3869                 vxge_debug_ll_config(VXGE_TRACE,
3870                         "%s: MTU size - %d", vdev->ndev->name,
3871                         ((struct __vxge_hw_device  *)(vdev->devh))->
3872                                 config.vp_config[i].mtu);
3873                 vxge_debug_init(VXGE_TRACE,
3874                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3875                         ((struct __vxge_hw_device  *)(vdev->devh))->
3876                                 config.vp_config[i].rpa_strip_vlan_tag
3877                         ? "Enabled" : "Disabled");
3878                 vxge_debug_init(VXGE_TRACE,
3879                         "%s: Ring blocks : %d", vdev->ndev->name,
3880                         ((struct __vxge_hw_device  *)(vdev->devh))->
3881                                 config.vp_config[i].ring.ring_blocks);
3882                 vxge_debug_init(VXGE_TRACE,
3883                         "%s: Fifo blocks : %d", vdev->ndev->name,
3884                         ((struct __vxge_hw_device  *)(vdev->devh))->
3885                                 config.vp_config[i].fifo.fifo_blocks);
3886                 vxge_debug_ll_config(VXGE_TRACE,
3887                         "%s: Max frags : %d", vdev->ndev->name,
3888                         ((struct __vxge_hw_device  *)(vdev->devh))->
3889                                 config.vp_config[i].fifo.max_frags);
3890                 break;
3891         }
3892 }
3893
3894 #ifdef CONFIG_PM
3895 /**
3896  * vxge_pm_suspend - vxge power management suspend entry point
3897  *
3898  */
3899 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3900 {
3901         return -ENOSYS;
3902 }
3903 /**
3904  * vxge_pm_resume - vxge power management resume entry point
3905  *
3906  */
3907 static int vxge_pm_resume(struct pci_dev *pdev)
3908 {
3909         return -ENOSYS;
3910 }
3911
3912 #endif
3913
3914 /**
3915  * vxge_io_error_detected - called when PCI error is detected
3916  * @pdev: Pointer to PCI device
3917  * @state: The current pci connection state
3918  *
3919  * This function is called after a PCI bus error affecting
3920  * this device has been detected.
3921  */
3922 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3923                                                 pci_channel_state_t state)
3924 {
3925         struct __vxge_hw_device  *hldev =
3926                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3927         struct net_device *netdev = hldev->ndev;
3928
3929         netif_device_detach(netdev);
3930
3931         if (state == pci_channel_io_perm_failure)
3932                 return PCI_ERS_RESULT_DISCONNECT;
3933
3934         if (netif_running(netdev)) {
3935                 /* Bring down the card, while avoiding PCI I/O */
3936                 do_vxge_close(netdev, 0);
3937         }
3938
3939         pci_disable_device(pdev);
3940
3941         return PCI_ERS_RESULT_NEED_RESET;
3942 }
3943
3944 /**
3945  * vxge_io_slot_reset - called after the pci bus has been reset.
3946  * @pdev: Pointer to PCI device
3947  *
3948  * Restart the card from scratch, as if from a cold-boot.
3949  * At this point, the card has exprienced a hard reset,
3950  * followed by fixups by BIOS, and has its config space
3951  * set up identically to what it was at cold boot.
3952  */
3953 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3954 {
3955         struct __vxge_hw_device  *hldev =
3956                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3957         struct net_device *netdev = hldev->ndev;
3958
3959         struct vxgedev *vdev = netdev_priv(netdev);
3960
3961         if (pci_enable_device(pdev)) {
3962                 printk(KERN_ERR "%s: "
3963                         "Cannot re-enable device after reset\n",
3964                         VXGE_DRIVER_NAME);
3965                 return PCI_ERS_RESULT_DISCONNECT;
3966         }
3967
3968         pci_set_master(pdev);
3969         vxge_reset(vdev);
3970
3971         return PCI_ERS_RESULT_RECOVERED;
3972 }
3973
3974 /**
3975  * vxge_io_resume - called when traffic can start flowing again.
3976  * @pdev: Pointer to PCI device
3977  *
3978  * This callback is called when the error recovery driver tells
3979  * us that its OK to resume normal operation.
3980  */
3981 static void vxge_io_resume(struct pci_dev *pdev)
3982 {
3983         struct __vxge_hw_device  *hldev =
3984                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3985         struct net_device *netdev = hldev->ndev;
3986
3987         if (netif_running(netdev)) {
3988                 if (vxge_open(netdev)) {
3989                         printk(KERN_ERR "%s: "
3990                                 "Can't bring device back up after reset\n",
3991                                 VXGE_DRIVER_NAME);
3992                         return;
3993                 }
3994         }
3995
3996         netif_device_attach(netdev);
3997 }
3998
3999 /**
4000  * vxge_probe
4001  * @pdev : structure containing the PCI related information of the device.
4002  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4003  * Description:
4004  * This function is called when a new PCI device gets detected and initializes
4005  * it.
4006  * Return value:
4007  * returns 0 on success and negative on failure.
4008  *
4009  */
4010 static int __devinit
4011 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4012 {
4013         struct __vxge_hw_device  *hldev;
4014         enum vxge_hw_status status;
4015         int ret;
4016         int high_dma = 0;
4017         u64 vpath_mask = 0;
4018         struct vxgedev *vdev;
4019         struct vxge_config ll_config;
4020         struct vxge_hw_device_config *device_config = NULL;
4021         struct vxge_hw_device_attr attr;
4022         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4023         u8 *macaddr;
4024         struct vxge_mac_addrs *entry;
4025         static int bus = -1, device = -1;
4026         u8 new_device = 0;
4027
4028         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4029         attr.pdev = pdev;
4030
4031         if (bus != pdev->bus->number)
4032                 new_device = 1;
4033         if (device != PCI_SLOT(pdev->devfn))
4034                 new_device = 1;
4035
4036         bus = pdev->bus->number;
4037         device = PCI_SLOT(pdev->devfn);
4038
4039         if (new_device) {
4040                 if (driver_config->config_dev_cnt &&
4041                    (driver_config->config_dev_cnt !=
4042                         driver_config->total_dev_cnt))
4043                         vxge_debug_init(VXGE_ERR,
4044                                 "%s: Configured %d of %d devices",
4045                                 VXGE_DRIVER_NAME,
4046                                 driver_config->config_dev_cnt,
4047                                 driver_config->total_dev_cnt);
4048                 driver_config->config_dev_cnt = 0;
4049                 driver_config->total_dev_cnt = 0;
4050                 driver_config->g_no_cpus = 0;
4051         }
4052
4053         driver_config->vpath_per_dev = max_config_vpath;
4054
4055         driver_config->total_dev_cnt++;
4056         if (++driver_config->config_dev_cnt > max_config_dev) {
4057                 ret = 0;
4058                 goto _exit0;
4059         }
4060
4061         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4062                 GFP_KERNEL);
4063         if (!device_config) {
4064                 ret = -ENOMEM;
4065                 vxge_debug_init(VXGE_ERR,
4066                         "device_config : malloc failed %s %d",
4067                         __FILE__, __LINE__);
4068                 goto _exit0;
4069         }
4070
4071         memset(&ll_config, 0, sizeof(struct vxge_config));
4072         ll_config.tx_steering_type = TX_MULTIQ_STEERING;
4073         ll_config.intr_type = MSI_X;
4074         ll_config.napi_weight = NEW_NAPI_WEIGHT;
4075         ll_config.rth_steering = RTH_STEERING;
4076
4077         /* get the default configuration parameters */
4078         vxge_hw_device_config_default_get(device_config);
4079
4080         /* initialize configuration parameters */
4081         vxge_device_config_init(device_config, &ll_config.intr_type);
4082
4083         ret = pci_enable_device(pdev);
4084         if (ret) {
4085                 vxge_debug_init(VXGE_ERR,
4086                         "%s : can not enable PCI device", __func__);
4087                 goto _exit0;
4088         }
4089
4090         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4091                 vxge_debug_ll_config(VXGE_TRACE,
4092                         "%s : using 64bit DMA", __func__);
4093
4094                 high_dma = 1;
4095
4096                 if (pci_set_consistent_dma_mask(pdev,
4097                                                 DMA_BIT_MASK(64))) {
4098                         vxge_debug_init(VXGE_ERR,
4099                                 "%s : unable to obtain 64bit DMA for "
4100                                 "consistent allocations", __func__);
4101                         ret = -ENOMEM;
4102                         goto _exit1;
4103                 }
4104         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4105                 vxge_debug_ll_config(VXGE_TRACE,
4106                         "%s : using 32bit DMA", __func__);
4107         } else {
4108                 ret = -ENOMEM;
4109                 goto _exit1;
4110         }
4111
4112         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4113                 vxge_debug_init(VXGE_ERR,
4114                         "%s : request regions failed", __func__);
4115                 ret = -ENODEV;
4116                 goto _exit1;
4117         }
4118
4119         pci_set_master(pdev);
4120
4121         attr.bar0 = pci_ioremap_bar(pdev, 0);
4122         if (!attr.bar0) {
4123                 vxge_debug_init(VXGE_ERR,
4124                         "%s : cannot remap io memory bar0", __func__);
4125                 ret = -ENODEV;
4126                 goto _exit2;
4127         }
4128         vxge_debug_ll_config(VXGE_TRACE,
4129                 "pci ioremap bar0: %p:0x%llx",
4130                 attr.bar0,
4131                 (unsigned long long)pci_resource_start(pdev, 0));
4132
4133         status = vxge_hw_device_hw_info_get(attr.bar0,
4134                         &ll_config.device_hw_info);
4135         if (status != VXGE_HW_OK) {
4136                 vxge_debug_init(VXGE_ERR,
4137                         "%s: Reading of hardware info failed."
4138                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4139                 ret = -EINVAL;
4140                 goto _exit3;
4141         }
4142
4143         if (ll_config.device_hw_info.fw_version.major !=
4144                 VXGE_DRIVER_FW_VERSION_MAJOR) {
4145                 vxge_debug_init(VXGE_ERR,
4146                         "%s: Incorrect firmware version."
4147                         "Please upgrade the firmware to version 1.x.x",
4148                         VXGE_DRIVER_NAME);
4149                 ret = -EINVAL;
4150                 goto _exit3;
4151         }
4152
4153         vpath_mask = ll_config.device_hw_info.vpath_mask;
4154         if (vpath_mask == 0) {
4155                 vxge_debug_ll_config(VXGE_TRACE,
4156                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4157                 ret = -EINVAL;
4158                 goto _exit3;
4159         }
4160
4161         vxge_debug_ll_config(VXGE_TRACE,
4162                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4163                 (unsigned long long)vpath_mask);
4164
4165         /* Check how many vpaths are available */
4166         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4167                 if (!((vpath_mask) & vxge_mBIT(i)))
4168                         continue;
4169                 max_vpath_supported++;
4170         }
4171
4172         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4173         if ((VXGE_HW_FUNCTION_MODE_SRIOV ==
4174                 ll_config.device_hw_info.function_mode) &&
4175                 (max_config_dev > 1) && (pdev->is_physfn)) {
4176                         ret = pci_enable_sriov(pdev, max_config_dev - 1);
4177                         if (ret)
4178                                 vxge_debug_ll_config(VXGE_ERR,
4179                                         "Failed to enable SRIOV: %d \n", ret);
4180         }
4181
4182         /*
4183          * Configure vpaths and get driver configured number of vpaths
4184          * which is less than or equal to the maximum vpaths per function.
4185          */
4186         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
4187         if (!no_of_vpath) {
4188                 vxge_debug_ll_config(VXGE_ERR,
4189                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4190                 ret = 0;
4191                 goto _exit3;
4192         }
4193
4194         /* Setting driver callbacks */
4195         attr.uld_callbacks.link_up = vxge_callback_link_up;
4196         attr.uld_callbacks.link_down = vxge_callback_link_down;
4197         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4198
4199         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4200         if (status != VXGE_HW_OK) {
4201                 vxge_debug_init(VXGE_ERR,
4202                         "Failed to initialize device (%d)", status);
4203                         ret = -EINVAL;
4204                         goto _exit3;
4205         }
4206
4207         /* if FCS stripping is not disabled in MAC fail driver load */
4208         if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) {
4209                 vxge_debug_init(VXGE_ERR,
4210                         "%s: FCS stripping is not disabled in MAC"
4211                         " failing driver load", VXGE_DRIVER_NAME);
4212                 ret = -EINVAL;
4213                 goto _exit4;
4214         }
4215
4216         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4217
4218         /* set private device info */
4219         pci_set_drvdata(pdev, hldev);
4220
4221         ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4222         ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4223         ll_config.addr_learn_en = addr_learn_en;
4224         ll_config.rth_algorithm = RTH_ALG_JENKINS;
4225         ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4226         ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4227         ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4228         ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4229         ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4230         ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4231         ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
4232         ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4233         ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4234
4235         if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
4236                 &vdev)) {
4237                 ret = -EINVAL;
4238                 goto _exit4;
4239         }
4240
4241         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4242         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4243                 vxge_hw_device_trace_level_get(hldev));
4244
4245         /* set private HW device info */
4246         hldev->ndev = vdev->ndev;
4247         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4248         vdev->bar0 = attr.bar0;
4249         vdev->max_vpath_supported = max_vpath_supported;
4250         vdev->no_of_vpath = no_of_vpath;
4251
4252         /* Virtual Path count */
4253         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4254                 if (!vxge_bVALn(vpath_mask, i, 1))
4255                         continue;
4256                 if (j >= vdev->no_of_vpath)
4257                         break;
4258
4259                 vdev->vpaths[j].is_configured = 1;
4260                 vdev->vpaths[j].device_id = i;
4261                 vdev->vpaths[j].fifo.driver_id = j;
4262                 vdev->vpaths[j].ring.driver_id = j;
4263                 vdev->vpaths[j].vdev = vdev;
4264                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4265                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4266                                 (u8 *)ll_config.device_hw_info.mac_addrs[i],
4267                                 ETH_ALEN);
4268
4269                 /* Initialize the mac address list header */
4270                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4271
4272                 vdev->vpaths[j].mac_addr_cnt = 0;
4273                 vdev->vpaths[j].mcast_addr_cnt = 0;
4274                 j++;
4275         }
4276         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4277         vdev->max_config_port = max_config_port;
4278
4279         vdev->vlan_tag_strip = vlan_tag_strip;
4280
4281         /* map the hashing selector table to the configured vpaths */
4282         for (i = 0; i < vdev->no_of_vpath; i++)
4283                 vdev->vpath_selector[i] = vpath_selector[i];
4284
4285         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4286
4287         ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4288         ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4289         ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4290
4291         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4292                 vdev->ndev->name, ll_config.device_hw_info.serial_number);
4293
4294         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4295                 vdev->ndev->name, ll_config.device_hw_info.part_number);
4296
4297         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4298                 vdev->ndev->name, ll_config.device_hw_info.product_desc);
4299
4300         vxge_debug_init(VXGE_TRACE,
4301                 "%s: MAC ADDR: %02X:%02X:%02X:%02X:%02X:%02X",
4302                 vdev->ndev->name, macaddr[0], macaddr[1], macaddr[2],
4303                 macaddr[3], macaddr[4], macaddr[5]);
4304
4305         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4306                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4307
4308         vxge_debug_init(VXGE_TRACE,
4309                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4310                 ll_config.device_hw_info.fw_version.version,
4311                 ll_config.device_hw_info.fw_date.date);
4312
4313         if (new_device) {
4314                 switch (ll_config.device_hw_info.function_mode) {
4315                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4316                         vxge_debug_init(VXGE_TRACE,
4317                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4318                 break;
4319                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4320                         vxge_debug_init(VXGE_TRACE,
4321                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4322                 break;
4323                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4324                         vxge_debug_init(VXGE_TRACE,
4325                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4326                 break;
4327                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4328                         vxge_debug_init(VXGE_TRACE,
4329                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4330                 break;
4331                 }
4332         }
4333
4334         vxge_print_parm(vdev, vpath_mask);
4335
4336         /* Store the fw version for ethttool option */
4337         strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
4338         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4339         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4340
4341         /* Copy the station mac address to the list */
4342         for (i = 0; i < vdev->no_of_vpath; i++) {
4343                 entry = (struct vxge_mac_addrs *)
4344                                 kzalloc(sizeof(struct vxge_mac_addrs),
4345                                         GFP_KERNEL);
4346                 if (NULL == entry) {
4347                         vxge_debug_init(VXGE_ERR,
4348                                 "%s: mac_addr_list : memory allocation failed",
4349                                 vdev->ndev->name);
4350                         ret = -EPERM;
4351                         goto _exit5;
4352                 }
4353                 macaddr = (u8 *)&entry->macaddr;
4354                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4355                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4356                 vdev->vpaths[i].mac_addr_cnt = 1;
4357         }
4358
4359         kfree(device_config);
4360
4361         /*
4362          * INTA is shared in multi-function mode. This is unlike the INTA
4363          * implementation in MR mode, where each VH has its own INTA message.
4364          * - INTA is masked (disabled) as long as at least one function sets
4365          * its TITAN_MASK_ALL_INT.ALARM bit.
4366          * - INTA is unmasked (enabled) when all enabled functions have cleared
4367          * their own TITAN_MASK_ALL_INT.ALARM bit.
4368          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4369          * Though this driver leaves the top level interrupts unmasked while
4370          * leaving the required module interrupt bits masked on exit, there
4371          * could be a rougue driver around that does not follow this procedure
4372          * resulting in a failure to generate interrupts. The following code is
4373          * present to prevent such a failure.
4374          */
4375
4376         if (ll_config.device_hw_info.function_mode ==
4377                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4378                 if (vdev->config.intr_type == INTA)
4379                         vxge_hw_device_unmask_all(hldev);
4380
4381         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4382                 vdev->ndev->name, __func__, __LINE__);
4383
4384         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4385         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4386                 vxge_hw_device_trace_level_get(hldev));
4387
4388         return 0;
4389
4390 _exit5:
4391         for (i = 0; i < vdev->no_of_vpath; i++)
4392                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4393
4394         vxge_device_unregister(hldev);
4395 _exit4:
4396         pci_disable_sriov(pdev);
4397         vxge_hw_device_terminate(hldev);
4398 _exit3:
4399         iounmap(attr.bar0);
4400 _exit2:
4401         pci_release_regions(pdev);
4402 _exit1:
4403         pci_disable_device(pdev);
4404 _exit0:
4405         kfree(device_config);
4406         driver_config->config_dev_cnt--;
4407         pci_set_drvdata(pdev, NULL);
4408         return ret;
4409 }
4410
4411 /**
4412  * vxge_rem_nic - Free the PCI device
4413  * @pdev: structure containing the PCI related information of the device.
4414  * Description: This function is called by the Pci subsystem to release a
4415  * PCI device and free up all resource held up by the device.
4416  */
4417 static void __devexit
4418 vxge_remove(struct pci_dev *pdev)
4419 {
4420         struct __vxge_hw_device  *hldev;
4421         struct vxgedev *vdev = NULL;
4422         struct net_device *dev;
4423         int i = 0;
4424 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4425         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4426         u32 level_trace;
4427 #endif
4428
4429         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4430
4431         if (hldev == NULL)
4432                 return;
4433         dev = hldev->ndev;
4434         vdev = netdev_priv(dev);
4435
4436 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4437         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4438         level_trace = vdev->level_trace;
4439 #endif
4440         vxge_debug_entryexit(level_trace,
4441                 "%s:%d", __func__, __LINE__);
4442
4443         vxge_debug_init(level_trace,
4444                 "%s : removing PCI device...", __func__);
4445         vxge_device_unregister(hldev);
4446
4447         for (i = 0; i < vdev->no_of_vpath; i++) {
4448                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4449                 vdev->vpaths[i].mcast_addr_cnt = 0;
4450                 vdev->vpaths[i].mac_addr_cnt = 0;
4451         }
4452
4453         kfree(vdev->vpaths);
4454
4455         iounmap(vdev->bar0);
4456
4457         pci_disable_sriov(pdev);
4458
4459         /* we are safe to free it now */
4460         free_netdev(dev);
4461
4462         vxge_debug_init(level_trace,
4463                 "%s:%d  Device unregistered", __func__, __LINE__);
4464
4465         vxge_hw_device_terminate(hldev);
4466
4467         pci_disable_device(pdev);
4468         pci_release_regions(pdev);
4469         pci_set_drvdata(pdev, NULL);
4470         vxge_debug_entryexit(level_trace,
4471                 "%s:%d  Exiting...", __func__, __LINE__);
4472 }
4473
4474 static struct pci_error_handlers vxge_err_handler = {
4475         .error_detected = vxge_io_error_detected,
4476         .slot_reset = vxge_io_slot_reset,
4477         .resume = vxge_io_resume,
4478 };
4479
4480 static struct pci_driver vxge_driver = {
4481         .name = VXGE_DRIVER_NAME,
4482         .id_table = vxge_id_table,
4483         .probe = vxge_probe,
4484         .remove = __devexit_p(vxge_remove),
4485 #ifdef CONFIG_PM
4486         .suspend = vxge_pm_suspend,
4487         .resume = vxge_pm_resume,
4488 #endif
4489         .err_handler = &vxge_err_handler,
4490 };
4491
4492 static int __init
4493 vxge_starter(void)
4494 {
4495         int ret = 0;
4496         char version[32];
4497         snprintf(version, 32, "%s", DRV_VERSION);
4498
4499         printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4500                 VXGE_DRIVER_NAME);
4501         printk(KERN_CRIT "%s: Driver version: %s\n",
4502                         VXGE_DRIVER_NAME, version);
4503
4504         verify_bandwidth();
4505
4506         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4507         if (!driver_config)
4508                 return -ENOMEM;
4509
4510         ret = pci_register_driver(&vxge_driver);
4511
4512         if (driver_config->config_dev_cnt &&
4513            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4514                 vxge_debug_init(VXGE_ERR,
4515                         "%s: Configured %d of %d devices",
4516                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4517                         driver_config->total_dev_cnt);
4518
4519         if (ret)
4520                 kfree(driver_config);
4521
4522         return ret;
4523 }
4524
4525 static void __exit
4526 vxge_closer(void)
4527 {
4528         pci_unregister_driver(&vxge_driver);
4529         kfree(driver_config);
4530 }
4531 module_init(vxge_starter);
4532 module_exit(vxge_closer);