drivers/net/vxge/vxge-main.c

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