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/slab.h>
  47 #include <linux/tcp.h>
  48 #include <net/ip.h>
  49 #include <linux/netdevice.h>
  50 #include <linux/etherdevice.h>
  51 #include "vxge-main.h"
  52 #include "vxge-reg.h"
  53
  54 MODULE_LICENSE("Dual BSD/GPL");
  55 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  56         "Virtualized Server Adapter");
  57
  58 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
  59         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  60         PCI_ANY_ID},
  61         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  62         PCI_ANY_ID},
  63         {0}
  64 };
  65
  66 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  67
  68 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  69 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  70 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  71 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  72 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  73 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  74
  75 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  76                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  77 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  78         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  79 module_param_array(bw_percentage, uint, NULL, 0);
  80
  81 static struct vxge_drv_config *driver_config;
  82
  83 static inline int is_vxge_card_up(struct vxgedev *vdev)
  84 {
  85         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  86 }
  87
  88 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  89 {
  90         unsigned long flags = 0;
  91         struct sk_buff **skb_ptr = NULL;
  92         struct sk_buff **temp;
  93 #define NR_SKB_COMPLETED 128
  94         struct sk_buff *completed[NR_SKB_COMPLETED];
  95         int more;
  96
  97         do {
  98                 more = 0;
  99                 skb_ptr = completed;
 100
 101                 if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
 102                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 103                                                 NR_SKB_COMPLETED, &more);
 104                         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 105                 }
 106                 /* free SKBs */
 107                 for (temp = completed; temp != skb_ptr; temp++)
 108                         dev_kfree_skb_irq(*temp);
 109         } while (more) ;
 110 }
 111
 112 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 113 {
 114         int i;
 115
 116         /* Complete all transmits */
 117         for (i = 0; i < vdev->no_of_vpath; i++)
 118                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 119 }
 120
 121 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 122 {
 123         int i;
 124         struct vxge_ring *ring;
 125
 126         /* Complete all receives*/
 127         for (i = 0; i < vdev->no_of_vpath; i++) {
 128                 ring = &vdev->vpaths[i].ring;
 129                 vxge_hw_vpath_poll_rx(ring->handle);
 130         }
 131 }
 132
 133 /*
 134  * MultiQ manipulation helper functions
 135  */
 136 static inline int vxge_netif_queue_stopped(struct vxge_fifo *fifo)
 137 {
 138         struct net_device *dev = fifo->ndev;
 139         struct netdev_queue *txq = NULL;
 140         int vpath_no = fifo->driver_id;
 141         int ret = 0;
 142
 143         if (fifo->tx_steering_type)
 144                 txq = netdev_get_tx_queue(dev, vpath_no);
 145         else
 146                 txq = netdev_get_tx_queue(dev, 0);
 147
 148         ret = netif_tx_queue_stopped(txq);
 149         return ret;
 150 }
 151
 152 void vxge_stop_tx_queue(struct vxge_fifo *fifo)
 153 {
 154         struct net_device *dev = fifo->ndev;
 155         struct netdev_queue *txq = NULL;
 156
 157         if (fifo->tx_steering_type)
 158                 txq = netdev_get_tx_queue(dev, fifo->driver_id);
 159         else
 160                 txq = netdev_get_tx_queue(dev, 0);
 161
 162         netif_tx_stop_queue(txq);
 163 }
 164
 165 void vxge_wake_tx_queue(struct vxge_fifo *fifo)
 166 {
 167         struct net_device *dev = fifo->ndev;
 168         struct netdev_queue *txq = NULL;
 169         int vpath_no = fifo->driver_id;
 170
 171         if (fifo->tx_steering_type)
 172                 txq = netdev_get_tx_queue(dev, vpath_no);
 173         else
 174                 txq = netdev_get_tx_queue(dev, 0);
 175
 176         if (netif_tx_queue_stopped(txq))
 177                 netif_tx_wake_queue(txq);
 178 }
 179
 180 /*
 181  * vxge_callback_link_up
 182  *
 183  * This function is called during interrupt context to notify link up state
 184  * change.
 185  */
 186 void
 187 vxge_callback_link_up(struct __vxge_hw_device *hldev)
 188 {
 189         struct net_device *dev = hldev->ndev;
 190         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 191
 192         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 193                 vdev->ndev->name, __func__, __LINE__);
 194         printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
 195         vdev->stats.link_up++;
 196
 197         netif_carrier_on(vdev->ndev);
 198         netif_tx_wake_all_queues(vdev->ndev);
 199
 200         vxge_debug_entryexit(VXGE_TRACE,
 201                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 202 }
 203
 204 /*
 205  * vxge_callback_link_down
 206  *
 207  * This function is called during interrupt context to notify link down state
 208  * change.
 209  */
 210 void
 211 vxge_callback_link_down(struct __vxge_hw_device *hldev)
 212 {
 213         struct net_device *dev = hldev->ndev;
 214         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 215
 216         vxge_debug_entryexit(VXGE_TRACE,
 217                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 218         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
 219
 220         vdev->stats.link_down++;
 221         netif_carrier_off(vdev->ndev);
 222         netif_tx_stop_all_queues(vdev->ndev);
 223
 224         vxge_debug_entryexit(VXGE_TRACE,
 225                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 226 }
 227
 228 /*
 229  * vxge_rx_alloc
 230  *
 231  * Allocate SKB.
 232  */
 233 static struct sk_buff*
 234 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 235 {
 236         struct net_device    *dev;
 237         struct sk_buff       *skb;
 238         struct vxge_rx_priv *rx_priv;
 239
 240         dev = ring->ndev;
 241         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 242                 ring->ndev->name, __func__, __LINE__);
 243
 244         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 245
 246         /* try to allocate skb first. this one may fail */
 247         skb = netdev_alloc_skb(dev, skb_size +
 248         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 249         if (skb == NULL) {
 250                 vxge_debug_mem(VXGE_ERR,
 251                         "%s: out of memory to allocate SKB", dev->name);
 252                 ring->stats.skb_alloc_fail++;
 253                 return NULL;
 254         }
 255
 256         vxge_debug_mem(VXGE_TRACE,
 257                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 258                 __func__, __LINE__, skb);
 259
 260         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 261
 262         rx_priv->skb = skb;
 263         rx_priv->skb_data = NULL;
 264         rx_priv->data_size = skb_size;
 265         vxge_debug_entryexit(VXGE_TRACE,
 266                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 267
 268         return skb;
 269 }
 270
 271 /*
 272  * vxge_rx_map
 273  */
 274 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 275 {
 276         struct vxge_rx_priv *rx_priv;
 277         dma_addr_t dma_addr;
 278
 279         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 280                 ring->ndev->name, __func__, __LINE__);
 281         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 282
 283         rx_priv->skb_data = rx_priv->skb->data;
 284         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 285                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 286
 287         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 288                 ring->stats.pci_map_fail++;
 289                 return -EIO;
 290         }
 291         vxge_debug_mem(VXGE_TRACE,
 292                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 293                 ring->ndev->name, __func__, __LINE__,
 294                 (unsigned long long)dma_addr);
 295         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 296
 297         rx_priv->data_dma = dma_addr;
 298         vxge_debug_entryexit(VXGE_TRACE,
 299                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 300
 301         return 0;
 302 }
 303
 304 /*
 305  * vxge_rx_initial_replenish
 306  * Allocation of RxD as an initial replenish procedure.
 307  */
 308 static enum vxge_hw_status
 309 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 310 {
 311         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 312         struct vxge_rx_priv *rx_priv;
 313
 314         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 315                 ring->ndev->name, __func__, __LINE__);
 316         if (vxge_rx_alloc(dtrh, ring,
 317                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 318                 return VXGE_HW_FAIL;
 319
 320         if (vxge_rx_map(dtrh, ring)) {
 321                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 322                 dev_kfree_skb(rx_priv->skb);
 323
 324                 return VXGE_HW_FAIL;
 325         }
 326         vxge_debug_entryexit(VXGE_TRACE,
 327                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 328
 329         return VXGE_HW_OK;
 330 }
 331
 332 static inline void
 333 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 334                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 335 {
 336
 337         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 338                         ring->ndev->name, __func__, __LINE__);
 339         skb_record_rx_queue(skb, ring->driver_id);
 340         skb->protocol = eth_type_trans(skb, ring->ndev);
 341
 342         ring->stats.rx_frms++;
 343         ring->stats.rx_bytes += pkt_length;
 344
 345         if (skb->pkt_type == PACKET_MULTICAST)
 346                 ring->stats.rx_mcast++;
 347
 348         vxge_debug_rx(VXGE_TRACE,
 349                 "%s: %s:%d  skb protocol = %d",
 350                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 351
 352         if (ring->gro_enable) {
 353                 if (ring->vlgrp && ext_info->vlan &&
 354                         (ring->vlan_tag_strip ==
 355                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 356                         vlan_gro_receive(ring->napi_p, ring->vlgrp,
 357                                         ext_info->vlan, skb);
 358                 else
 359                         napi_gro_receive(ring->napi_p, skb);
 360         } else {
 361                 if (ring->vlgrp && vlan &&
 362                         (ring->vlan_tag_strip ==
 363                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 364                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 365                 else
 366                         netif_receive_skb(skb);
 367         }
 368         vxge_debug_entryexit(VXGE_TRACE,
 369                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 370 }
 371
 372 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 373                                     struct vxge_rx_priv *rx_priv)
 374 {
 375         pci_dma_sync_single_for_device(ring->pdev,
 376                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 377
 378         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 379         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 380 }
 381
 382 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 383                              void *post_dtr, struct __vxge_hw_ring *ringh)
 384 {
 385         int dtr_count = *dtr_cnt;
 386         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 387                 if (*first_dtr)
 388                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 389                 *first_dtr = post_dtr;
 390         } else
 391                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 392         dtr_count++;
 393         *dtr_cnt = dtr_count;
 394 }
 395
 396 /*
 397  * vxge_rx_1b_compl
 398  *
 399  * If the interrupt is because of a received frame or if the receive ring
 400  * contains fresh as yet un-processed frames, this function is called.
 401  */
 402 enum vxge_hw_status
 403 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 404                  u8 t_code, void *userdata)
 405 {
 406         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 407         struct  net_device *dev = ring->ndev;
 408         unsigned int dma_sizes;
 409         void *first_dtr = NULL;
 410         int dtr_cnt = 0;
 411         int data_size;
 412         dma_addr_t data_dma;
 413         int pkt_length;
 414         struct sk_buff *skb;
 415         struct vxge_rx_priv *rx_priv;
 416         struct vxge_hw_ring_rxd_info ext_info;
 417         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 418                 ring->ndev->name, __func__, __LINE__);
 419         ring->pkts_processed = 0;
 420
 421         vxge_hw_ring_replenish(ringh);
 422
 423         do {
 424                 prefetch((char *)dtr + L1_CACHE_BYTES);
 425                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 426                 skb = rx_priv->skb;
 427                 data_size = rx_priv->data_size;
 428                 data_dma = rx_priv->data_dma;
 429                 prefetch(rx_priv->skb_data);
 430
 431                 vxge_debug_rx(VXGE_TRACE,
 432                         "%s: %s:%d  skb = 0x%p",
 433                         ring->ndev->name, __func__, __LINE__, skb);
 434
 435                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 436                 pkt_length = dma_sizes;
 437
 438                 pkt_length -= ETH_FCS_LEN;
 439
 440                 vxge_debug_rx(VXGE_TRACE,
 441                         "%s: %s:%d  Packet Length = %d",
 442                         ring->ndev->name, __func__, __LINE__, pkt_length);
 443
 444                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 445
 446                 /* check skb validity */
 447                 vxge_assert(skb);
 448
 449                 prefetch((char *)skb + L1_CACHE_BYTES);
 450                 if (unlikely(t_code)) {
 451
 452                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 453                                 VXGE_HW_OK) {
 454
 455                                 ring->stats.rx_errors++;
 456                                 vxge_debug_rx(VXGE_TRACE,
 457                                         "%s: %s :%d Rx T_code is %d",
 458                                         ring->ndev->name, __func__,
 459                                         __LINE__, t_code);
 460
 461                                 /* If the t_code is not supported and if the
 462                                  * t_code is other than 0x5 (unparseable packet
 463                                  * such as unknown UPV6 header), Drop it !!!
 464                                  */
 465                                 vxge_re_pre_post(dtr, ring, rx_priv);
 466
 467                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 468                                 ring->stats.rx_dropped++;
 469                                 continue;
 470                         }
 471                 }
 472
 473                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 474
 475                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 476
 477                                 if (!vxge_rx_map(dtr, ring)) {
 478                                         skb_put(skb, pkt_length);
 479
 480                                         pci_unmap_single(ring->pdev, data_dma,
 481                                                 data_size, PCI_DMA_FROMDEVICE);
 482
 483                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 484                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 485                                                 ringh);
 486                                 } else {
 487                                         dev_kfree_skb(rx_priv->skb);
 488                                         rx_priv->skb = skb;
 489                                         rx_priv->data_size = data_size;
 490                                         vxge_re_pre_post(dtr, ring, rx_priv);
 491
 492                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 493                                                 ringh);
 494                                         ring->stats.rx_dropped++;
 495                                         break;
 496                                 }
 497                         } else {
 498                                 vxge_re_pre_post(dtr, ring, rx_priv);
 499
 500                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 501                                 ring->stats.rx_dropped++;
 502                                 break;
 503                         }
 504                 } else {
 505                         struct sk_buff *skb_up;
 506
 507                         skb_up = netdev_alloc_skb(dev, pkt_length +
 508                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 509                         if (skb_up != NULL) {
 510                                 skb_reserve(skb_up,
 511                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 512
 513                                 pci_dma_sync_single_for_cpu(ring->pdev,
 514                                         data_dma, data_size,
 515                                         PCI_DMA_FROMDEVICE);
 516
 517                                 vxge_debug_mem(VXGE_TRACE,
 518                                         "%s: %s:%d  skb_up = %p",
 519                                         ring->ndev->name, __func__,
 520                                         __LINE__, skb);
 521                                 memcpy(skb_up->data, skb->data, pkt_length);
 522
 523                                 vxge_re_pre_post(dtr, ring, rx_priv);
 524
 525                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 526                                         ringh);
 527                                 /* will netif_rx small SKB instead */
 528                                 skb = skb_up;
 529                                 skb_put(skb, pkt_length);
 530                         } else {
 531                                 vxge_re_pre_post(dtr, ring, rx_priv);
 532
 533                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 534                                 vxge_debug_rx(VXGE_ERR,
 535                                         "%s: vxge_rx_1b_compl: out of "
 536                                         "memory", dev->name);
 537                                 ring->stats.skb_alloc_fail++;
 538                                 break;
 539                         }
 540                 }
 541
 542                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 543                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 544                     ring->rx_csum && /* Offload Rx side CSUM */
 545                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 546                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 547                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 548                 else
 549                         skb->ip_summed = CHECKSUM_NONE;
 550
 551                 vxge_rx_complete(ring, skb, ext_info.vlan,
 552                         pkt_length, &ext_info);
 553
 554                 ring->budget--;
 555                 ring->pkts_processed++;
 556                 if (!ring->budget)
 557                         break;
 558
 559         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 560                 &t_code) == VXGE_HW_OK);
 561
 562         if (first_dtr)
 563                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 564
 565         vxge_debug_entryexit(VXGE_TRACE,
 566                                 "%s:%d  Exiting...",
 567                                 __func__, __LINE__);
 568         return VXGE_HW_OK;
 569 }
 570
 571 /*
 572  * vxge_xmit_compl
 573  *
 574  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 575  * this function is called. It identifies the last TxD whose buffer was
 576  * freed and frees all skbs whose data have already DMA'ed into the NICs
 577  * internal memory.
 578  */
 579 enum vxge_hw_status
 580 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 581                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 582                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 583 {
 584         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 585         struct sk_buff *skb, **done_skb = *skb_ptr;
 586         int pkt_cnt = 0;
 587
 588         vxge_debug_entryexit(VXGE_TRACE,
 589                 "%s:%d Entered....", __func__, __LINE__);
 590
 591         do {
 592                 int frg_cnt;
 593                 skb_frag_t *frag;
 594                 int i = 0, j;
 595                 struct vxge_tx_priv *txd_priv =
 596                         vxge_hw_fifo_txdl_private_get(dtr);
 597
 598                 skb = txd_priv->skb;
 599                 frg_cnt = skb_shinfo(skb)->nr_frags;
 600                 frag = &skb_shinfo(skb)->frags[0];
 601
 602                 vxge_debug_tx(VXGE_TRACE,
 603                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 604                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 605                                 __LINE__, fifo_hw, dtr, t_code);
 606                 /* check skb validity */
 607                 vxge_assert(skb);
 608                 vxge_debug_tx(VXGE_TRACE,
 609                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 610                         fifo->ndev->name, __func__, __LINE__,
 611                         skb, txd_priv, frg_cnt);
 612                 if (unlikely(t_code)) {
 613                         fifo->stats.tx_errors++;
 614                         vxge_debug_tx(VXGE_ERR,
 615                                 "%s: tx: dtr %p completed due to "
 616                                 "error t_code %01x", fifo->ndev->name,
 617                                 dtr, t_code);
 618                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 619                 }
 620
 621                 /*  for unfragmented skb */
 622                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 623                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 624
 625                 for (j = 0; j < frg_cnt; j++) {
 626                         pci_unmap_page(fifo->pdev,
 627                                         txd_priv->dma_buffers[i++],
 628                                         frag->size, PCI_DMA_TODEVICE);
 629                         frag += 1;
 630                 }
 631
 632                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 633
 634                 /* Updating the statistics block */
 635                 fifo->stats.tx_frms++;
 636                 fifo->stats.tx_bytes += skb->len;
 637
 638                 *done_skb++ = skb;
 639
 640                 if (--nr_skb <= 0) {
 641                         *more = 1;
 642                         break;
 643                 }
 644
 645                 pkt_cnt++;
 646                 if (pkt_cnt > fifo->indicate_max_pkts)
 647                         break;
 648
 649         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 650                                 &dtr, &t_code) == VXGE_HW_OK);
 651
 652         *skb_ptr = done_skb;
 653         vxge_wake_tx_queue(fifo);
 654
 655         vxge_debug_entryexit(VXGE_TRACE,
 656                                 "%s: %s:%d  Exiting...",
 657                                 fifo->ndev->name, __func__, __LINE__);
 658         return VXGE_HW_OK;
 659 }
 660
 661 /* select a vpath to transmit the packet */
 662 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
 663         int *do_lock)
 664 {
 665         u16 queue_len, counter = 0;
 666         if (skb->protocol == htons(ETH_P_IP)) {
 667                 struct iphdr *ip;
 668                 struct tcphdr *th;
 669
 670                 ip = ip_hdr(skb);
 671
 672                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 673                         th = (struct tcphdr *)(((unsigned char *)ip) +
 674                                         ip->ihl*4);
 675
 676                         queue_len = vdev->no_of_vpath;
 677                         counter = (ntohs(th->source) +
 678                                 ntohs(th->dest)) &
 679                                 vdev->vpath_selector[queue_len - 1];
 680                         if (counter >= queue_len)
 681                                 counter = queue_len - 1;
 682
 683                         if (ip->protocol == IPPROTO_UDP) {
 684 #ifdef NETIF_F_LLTX
 685                                 *do_lock = 0;
 686 #endif
 687                         }
 688                 }
 689         }
 690         return counter;
 691 }
 692
 693 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 694         struct vxge_vpath *vpath, u64 del_mac)
 695 {
 696         struct list_head *entry, *next;
 697         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 698                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 699                         return TRUE;
 700         }
 701         return FALSE;
 702 }
 703
 704 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 705 {
 706         struct macInfo mac_info;
 707         u8 *mac_address = NULL;
 708         u64 mac_addr = 0, vpath_vector = 0;
 709         int vpath_idx = 0;
 710         enum vxge_hw_status status = VXGE_HW_OK;
 711         struct vxge_vpath *vpath = NULL;
 712         struct __vxge_hw_device *hldev;
 713
 714         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
 715
 716         mac_address = (u8 *)&mac_addr;
 717         memcpy(mac_address, mac_header, ETH_ALEN);
 718
 719         /* Is this mac address already in the list? */
 720         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 721                 vpath = &vdev->vpaths[vpath_idx];
 722                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 723                         return vpath_idx;
 724         }
 725
 726         memset(&mac_info, 0, sizeof(struct macInfo));
 727         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 728
 729         /* Any vpath has room to add mac address to its da table? */
 730         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 731                 vpath = &vdev->vpaths[vpath_idx];
 732                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 733                         /* Add this mac address to this vpath */
 734                         mac_info.vpath_no = vpath_idx;
 735                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 736                         status = vxge_add_mac_addr(vdev, &mac_info);
 737                         if (status != VXGE_HW_OK)
 738                                 return -EPERM;
 739                         return vpath_idx;
 740                 }
 741         }
 742
 743         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 744         vpath_idx = 0;
 745         mac_info.vpath_no = vpath_idx;
 746         /* Is the first vpath already selected as catch-basin ? */
 747         vpath = &vdev->vpaths[vpath_idx];
 748         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 749                 /* Add this mac address to this vpath */
 750                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 751                         return -EPERM;
 752                 return vpath_idx;
 753         }
 754
 755         /* Select first vpath as catch-basin */
 756         vpath_vector = vxge_mBIT(vpath->device_id);
 757         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 758                                 vxge_hw_mgmt_reg_type_mrpcim,
 759                                 0,
 760                                 (ulong)offsetof(
 761                                         struct vxge_hw_mrpcim_reg,
 762                                         rts_mgr_cbasin_cfg),
 763                                 vpath_vector);
 764         if (status != VXGE_HW_OK) {
 765                 vxge_debug_tx(VXGE_ERR,
 766                         "%s: Unable to set the vpath-%d in catch-basin mode",
 767                         VXGE_DRIVER_NAME, vpath->device_id);
 768                 return -EPERM;
 769         }
 770
 771         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 772                 return -EPERM;
 773
 774         return vpath_idx;
 775 }
 776
 777 /**
 778  * vxge_xmit
 779  * @skb : the socket buffer containing the Tx data.
 780  * @dev : device pointer.
 781  *
 782  * This function is the Tx entry point of the driver. Neterion NIC supports
 783  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 784  * NOTE: when device cant queue the pkt, just the trans_start variable will
 785  * not be upadted.
 786 */
 787 static netdev_tx_t
 788 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 789 {
 790         struct vxge_fifo *fifo = NULL;
 791         void *dtr_priv;
 792         void *dtr = NULL;
 793         struct vxgedev *vdev = NULL;
 794         enum vxge_hw_status status;
 795         int frg_cnt, first_frg_len;
 796         skb_frag_t *frag;
 797         int i = 0, j = 0, avail;
 798         u64 dma_pointer;
 799         struct vxge_tx_priv *txdl_priv = NULL;
 800         struct __vxge_hw_fifo *fifo_hw;
 801         int offload_type;
 802         unsigned long flags = 0;
 803         int vpath_no = 0;
 804         int do_spin_tx_lock = 1;
 805
 806         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 807                         dev->name, __func__, __LINE__);
 808
 809         /* A buffer with no data will be dropped */
 810         if (unlikely(skb->len <= 0)) {
 811                 vxge_debug_tx(VXGE_ERR,
 812                         "%s: Buffer has no data..", dev->name);
 813                 dev_kfree_skb(skb);
 814                 return NETDEV_TX_OK;
 815         }
 816
 817         vdev = (struct vxgedev *)netdev_priv(dev);
 818
 819         if (unlikely(!is_vxge_card_up(vdev))) {
 820                 vxge_debug_tx(VXGE_ERR,
 821                         "%s: vdev not initialized", dev->name);
 822                 dev_kfree_skb(skb);
 823                 return NETDEV_TX_OK;
 824         }
 825
 826         if (vdev->config.addr_learn_en) {
 827                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 828                 if (vpath_no == -EPERM) {
 829                         vxge_debug_tx(VXGE_ERR,
 830                                 "%s: Failed to store the mac address",
 831                                 dev->name);
 832                         dev_kfree_skb(skb);
 833                         return NETDEV_TX_OK;
 834                 }
 835         }
 836
 837         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 838                 vpath_no = skb_get_queue_mapping(skb);
 839         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 840                 vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);
 841
 842         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 843
 844         if (vpath_no >= vdev->no_of_vpath)
 845                 vpath_no = 0;
 846
 847         fifo = &vdev->vpaths[vpath_no].fifo;
 848         fifo_hw = fifo->handle;
 849
 850         if (do_spin_tx_lock)
 851                 spin_lock_irqsave(&fifo->tx_lock, flags);
 852         else {
 853                 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
 854                         return NETDEV_TX_LOCKED;
 855         }
 856
 857         if (vxge_netif_queue_stopped(fifo)) {
 858                 spin_unlock_irqrestore(&fifo->tx_lock, flags);
 859                 return NETDEV_TX_BUSY;
 860         }
 861
 862         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 863         if (avail == 0) {
 864                 vxge_debug_tx(VXGE_ERR,
 865                         "%s: No free TXDs available", dev->name);
 866                 fifo->stats.txd_not_free++;
 867                 vxge_stop_tx_queue(fifo);
 868                 goto _exit2;
 869         }
 870
 871         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 872          * completion will resume the queue.
 873          */
 874         if (avail == 1)
 875                 vxge_stop_tx_queue(fifo);
 876
 877         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 878         if (unlikely(status != VXGE_HW_OK)) {
 879                 vxge_debug_tx(VXGE_ERR,
 880                    "%s: Out of descriptors .", dev->name);
 881                 fifo->stats.txd_out_of_desc++;
 882                 vxge_stop_tx_queue(fifo);
 883                 goto _exit2;
 884         }
 885
 886         vxge_debug_tx(VXGE_TRACE,
 887                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 888                 dev->name, __func__, __LINE__,
 889                 fifo_hw, dtr, dtr_priv);
 890
 891         if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
 892                 u16 vlan_tag = vlan_tx_tag_get(skb);
 893                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 894         }
 895
 896         first_frg_len = skb_headlen(skb);
 897
 898         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 899                                 PCI_DMA_TODEVICE);
 900
 901         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 902                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 903                 vxge_stop_tx_queue(fifo);
 904                 fifo->stats.pci_map_fail++;
 905                 goto _exit2;
 906         }
 907
 908         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 909         txdl_priv->skb = skb;
 910         txdl_priv->dma_buffers[j] = dma_pointer;
 911
 912         frg_cnt = skb_shinfo(skb)->nr_frags;
 913         vxge_debug_tx(VXGE_TRACE,
 914                         "%s: %s:%d skb = %p txdl_priv = %p "
 915                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 916                         __func__, __LINE__, skb, txdl_priv,
 917                         frg_cnt, (unsigned long long)dma_pointer);
 918
 919         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 920                 first_frg_len);
 921
 922         frag = &skb_shinfo(skb)->frags[0];
 923         for (i = 0; i < frg_cnt; i++) {
 924                 /* ignore 0 length fragment */
 925                 if (!frag->size)
 926                         continue;
 927
 928                 dma_pointer =
 929                         (u64)pci_map_page(fifo->pdev, frag->page,
 930                                 frag->page_offset, frag->size,
 931                                 PCI_DMA_TODEVICE);
 932
 933                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 934                         goto _exit0;
 935                 vxge_debug_tx(VXGE_TRACE,
 936                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 937                                 dev->name, __func__, __LINE__, i,
 938                                 (unsigned long long)dma_pointer);
 939
 940                 txdl_priv->dma_buffers[j] = dma_pointer;
 941                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 942                                         frag->size);
 943                 frag += 1;
 944         }
 945
 946         offload_type = vxge_offload_type(skb);
 947
 948         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 949
 950                 int mss = vxge_tcp_mss(skb);
 951                 if (mss) {
 952                         vxge_debug_tx(VXGE_TRACE,
 953                                 "%s: %s:%d mss = %d",
 954                                 dev->name, __func__, __LINE__, mss);
 955                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 956                 } else {
 957                         vxge_assert(skb->len <=
 958                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 959                         vxge_assert(0);
 960                         goto _exit1;
 961                 }
 962         }
 963
 964         if (skb->ip_summed == CHECKSUM_PARTIAL)
 965                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 966                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 967                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 968                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 969
 970         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 971 #ifdef NETIF_F_LLTX
 972         dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
 973 #endif
 974         spin_unlock_irqrestore(&fifo->tx_lock, flags);
 975
 976         VXGE_COMPLETE_VPATH_TX(fifo);
 977         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 978                 dev->name, __func__, __LINE__);
 979         return NETDEV_TX_OK;
 980
 981 _exit0:
 982         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 983
 984 _exit1:
 985         j = 0;
 986         frag = &skb_shinfo(skb)->frags[0];
 987
 988         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 989                         skb_headlen(skb), PCI_DMA_TODEVICE);
 990
 991         for (; j < i; j++) {
 992                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 993                         frag->size, PCI_DMA_TODEVICE);
 994                 frag += 1;
 995         }
 996
 997         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 998 _exit2:
 999         dev_kfree_skb(skb);
1000         spin_unlock_irqrestore(&fifo->tx_lock, flags);
1001         VXGE_COMPLETE_VPATH_TX(fifo);
1002
1003         return NETDEV_TX_OK;
1004 }
1005
1006 /*
1007  * vxge_rx_term
1008  *
1009  * Function will be called by hw function to abort all outstanding receive
1010  * descriptors.
1011  */
1012 static void
1013 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1014 {
1015         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1016         struct vxge_rx_priv *rx_priv =
1017                 vxge_hw_ring_rxd_private_get(dtrh);
1018
1019         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1020                         ring->ndev->name, __func__, __LINE__);
1021         if (state != VXGE_HW_RXD_STATE_POSTED)
1022                 return;
1023
1024         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1025                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1026
1027         dev_kfree_skb(rx_priv->skb);
1028         rx_priv->skb_data = NULL;
1029
1030         vxge_debug_entryexit(VXGE_TRACE,
1031                 "%s: %s:%d  Exiting...",
1032                 ring->ndev->name, __func__, __LINE__);
1033 }
1034
1035 /*
1036  * vxge_tx_term
1037  *
1038  * Function will be called to abort all outstanding tx descriptors
1039  */
1040 static void
1041 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1042 {
1043         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1044         skb_frag_t *frag;
1045         int i = 0, j, frg_cnt;
1046         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1047         struct sk_buff *skb = txd_priv->skb;
1048
1049         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1050
1051         if (state != VXGE_HW_TXDL_STATE_POSTED)
1052                 return;
1053
1054         /* check skb validity */
1055         vxge_assert(skb);
1056         frg_cnt = skb_shinfo(skb)->nr_frags;
1057         frag = &skb_shinfo(skb)->frags[0];
1058
1059         /*  for unfragmented skb */
1060         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1061                 skb_headlen(skb), PCI_DMA_TODEVICE);
1062
1063         for (j = 0; j < frg_cnt; j++) {
1064                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1065                                frag->size, PCI_DMA_TODEVICE);
1066                 frag += 1;
1067         }
1068
1069         dev_kfree_skb(skb);
1070
1071         vxge_debug_entryexit(VXGE_TRACE,
1072                 "%s:%d  Exiting...", __func__, __LINE__);
1073 }
1074
1075 /**
1076  * vxge_set_multicast
1077  * @dev: pointer to the device structure
1078  *
1079  * Entry point for multicast address enable/disable
1080  * This function is a driver entry point which gets called by the kernel
1081  * whenever multicast addresses must be enabled/disabled. This also gets
1082  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1083  * determine, if multicast address must be enabled or if promiscuous mode
1084  * is to be disabled etc.
1085  */
1086 static void vxge_set_multicast(struct net_device *dev)
1087 {
1088         struct netdev_hw_addr *ha;
1089         struct vxgedev *vdev;
1090         int i, mcast_cnt = 0;
1091         struct __vxge_hw_device *hldev;
1092         struct vxge_vpath *vpath;
1093         enum vxge_hw_status status = VXGE_HW_OK;
1094         struct macInfo mac_info;
1095         int vpath_idx = 0;
1096         struct vxge_mac_addrs *mac_entry;
1097         struct list_head *list_head;
1098         struct list_head *entry, *next;
1099         u8 *mac_address = NULL;
1100
1101         vxge_debug_entryexit(VXGE_TRACE,
1102                 "%s:%d", __func__, __LINE__);
1103
1104         vdev = (struct vxgedev *)netdev_priv(dev);
1105         hldev = (struct __vxge_hw_device  *)vdev->devh;
1106
1107         if (unlikely(!is_vxge_card_up(vdev)))
1108                 return;
1109
1110         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1111                 for (i = 0; i < vdev->no_of_vpath; i++) {
1112                         vpath = &vdev->vpaths[i];
1113                         vxge_assert(vpath->is_open);
1114                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1115                         if (status != VXGE_HW_OK)
1116                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1117                                                 "multicast, status %d", status);
1118                         vdev->all_multi_flg = 1;
1119                 }
1120         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1121                 for (i = 0; i < vdev->no_of_vpath; i++) {
1122                         vpath = &vdev->vpaths[i];
1123                         vxge_assert(vpath->is_open);
1124                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1125                         if (status != VXGE_HW_OK)
1126                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1127                                                 "multicast, status %d", status);
1128                         vdev->all_multi_flg = 0;
1129                 }
1130         }
1131
1132
1133         if (!vdev->config.addr_learn_en) {
1134                 for (i = 0; i < vdev->no_of_vpath; i++) {
1135                         vpath = &vdev->vpaths[i];
1136                         vxge_assert(vpath->is_open);
1137
1138                         if (dev->flags & IFF_PROMISC)
1139                                 status = vxge_hw_vpath_promisc_enable(
1140                                         vpath->handle);
1141                         else
1142                                 status = vxge_hw_vpath_promisc_disable(
1143                                         vpath->handle);
1144                         if (status != VXGE_HW_OK)
1145                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1146                                         ", status %d", dev->flags&IFF_PROMISC ?
1147                                         "enable" : "disable", status);
1148                 }
1149         }
1150
1151         memset(&mac_info, 0, sizeof(struct macInfo));
1152         /* Update individual M_CAST address list */
1153         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1154                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1155                 list_head = &vdev->vpaths[0].mac_addr_list;
1156                 if ((netdev_mc_count(dev) +
1157                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1158                                 vdev->vpaths[0].max_mac_addr_cnt)
1159                         goto _set_all_mcast;
1160
1161                 /* Delete previous MC's */
1162                 for (i = 0; i < mcast_cnt; i++) {
1163                         list_for_each_safe(entry, next, list_head) {
1164                                 mac_entry = (struct vxge_mac_addrs *) entry;
1165                                 /* Copy the mac address to delete */
1166                                 mac_address = (u8 *)&mac_entry->macaddr;
1167                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1168
1169                                 /* Is this a multicast address */
1170                                 if (0x01 & mac_info.macaddr[0]) {
1171                                         for (vpath_idx = 0; vpath_idx <
1172                                                 vdev->no_of_vpath;
1173                                                 vpath_idx++) {
1174                                                 mac_info.vpath_no = vpath_idx;
1175                                                 status = vxge_del_mac_addr(
1176                                                                 vdev,
1177                                                                 &mac_info);
1178                                         }
1179                                 }
1180                         }
1181                 }
1182
1183                 /* Add new ones */
1184                 netdev_for_each_mc_addr(ha, dev) {
1185                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1186                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1187                                         vpath_idx++) {
1188                                 mac_info.vpath_no = vpath_idx;
1189                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1190                                 status = vxge_add_mac_addr(vdev, &mac_info);
1191                                 if (status != VXGE_HW_OK) {
1192                                         vxge_debug_init(VXGE_ERR,
1193                                                 "%s:%d Setting individual"
1194                                                 "multicast address failed",
1195                                                 __func__, __LINE__);
1196                                         goto _set_all_mcast;
1197                                 }
1198                         }
1199                 }
1200
1201                 return;
1202 _set_all_mcast:
1203                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1204                 /* Delete previous MC's */
1205                 for (i = 0; i < mcast_cnt; i++) {
1206                         list_for_each_safe(entry, next, list_head) {
1207                                 mac_entry = (struct vxge_mac_addrs *) entry;
1208                                 /* Copy the mac address to delete */
1209                                 mac_address = (u8 *)&mac_entry->macaddr;
1210                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1211
1212                                 /* Is this a multicast address */
1213                                 if (0x01 & mac_info.macaddr[0])
1214                                         break;
1215                         }
1216
1217                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1218                                         vpath_idx++) {
1219                                 mac_info.vpath_no = vpath_idx;
1220                                 status = vxge_del_mac_addr(vdev, &mac_info);
1221                         }
1222                 }
1223
1224                 /* Enable all multicast */
1225                 for (i = 0; i < vdev->no_of_vpath; i++) {
1226                         vpath = &vdev->vpaths[i];
1227                         vxge_assert(vpath->is_open);
1228
1229                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1230                         if (status != VXGE_HW_OK) {
1231                                 vxge_debug_init(VXGE_ERR,
1232                                         "%s:%d Enabling all multicasts failed",
1233                                          __func__, __LINE__);
1234                         }
1235                         vdev->all_multi_flg = 1;
1236                 }
1237                 dev->flags |= IFF_ALLMULTI;
1238         }
1239
1240         vxge_debug_entryexit(VXGE_TRACE,
1241                 "%s:%d  Exiting...", __func__, __LINE__);
1242 }
1243
1244 /**
1245  * vxge_set_mac_addr
1246  * @dev: pointer to the device structure
1247  *
1248  * Update entry "0" (default MAC addr)
1249  */
1250 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1251 {
1252         struct sockaddr *addr = p;
1253         struct vxgedev *vdev;
1254         struct __vxge_hw_device  *hldev;
1255         enum vxge_hw_status status = VXGE_HW_OK;
1256         struct macInfo mac_info_new, mac_info_old;
1257         int vpath_idx = 0;
1258
1259         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1260
1261         vdev = (struct vxgedev *)netdev_priv(dev);
1262         hldev = vdev->devh;
1263
1264         if (!is_valid_ether_addr(addr->sa_data))
1265                 return -EINVAL;
1266
1267         memset(&mac_info_new, 0, sizeof(struct macInfo));
1268         memset(&mac_info_old, 0, sizeof(struct macInfo));
1269
1270         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1271                 __func__, __LINE__);
1272
1273         /* Get the old address */
1274         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1275
1276         /* Copy the new address */
1277         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1278
1279         /* First delete the old mac address from all the vpaths
1280         as we can't specify the index while adding new mac address */
1281         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1282                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1283                 if (!vpath->is_open) {
1284                         /* This can happen when this interface is added/removed
1285                         to the bonding interface. Delete this station address
1286                         from the linked list */
1287                         vxge_mac_list_del(vpath, &mac_info_old);
1288
1289                         /* Add this new address to the linked list
1290                         for later restoring */
1291                         vxge_mac_list_add(vpath, &mac_info_new);
1292
1293                         continue;
1294                 }
1295                 /* Delete the station address */
1296                 mac_info_old.vpath_no = vpath_idx;
1297                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1298         }
1299
1300         if (unlikely(!is_vxge_card_up(vdev))) {
1301                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1302                 return VXGE_HW_OK;
1303         }
1304
1305         /* Set this mac address to all the vpaths */
1306         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1307                 mac_info_new.vpath_no = vpath_idx;
1308                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1309                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1310                 if (status != VXGE_HW_OK)
1311                         return -EINVAL;
1312         }
1313
1314         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1315
1316         return status;
1317 }
1318
1319 /*
1320  * vxge_vpath_intr_enable
1321  * @vdev: pointer to vdev
1322  * @vp_id: vpath for which to enable the interrupts
1323  *
1324  * Enables the interrupts for the vpath
1325 */
1326 void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1327 {
1328         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1329         int msix_id = 0;
1330         int tim_msix_id[4] = {0, 1, 0, 0};
1331         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1332
1333         vxge_hw_vpath_intr_enable(vpath->handle);
1334
1335         if (vdev->config.intr_type == INTA)
1336                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1337         else {
1338                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1339                         alarm_msix_id);
1340
1341                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1342                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1343                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1344
1345                 /* enable the alarm vector */
1346                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1347                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1348                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1349         }
1350 }
1351
1352 /*
1353  * vxge_vpath_intr_disable
1354  * @vdev: pointer to vdev
1355  * @vp_id: vpath for which to disable the interrupts
1356  *
1357  * Disables the interrupts for the vpath
1358 */
1359 void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1360 {
1361         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1362         int msix_id;
1363
1364         vxge_hw_vpath_intr_disable(vpath->handle);
1365
1366         if (vdev->config.intr_type == INTA)
1367                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1368         else {
1369                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1370                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1371                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1372
1373                 /* disable the alarm vector */
1374                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1375                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1376                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1377         }
1378 }
1379
1380 /*
1381  * vxge_reset_vpath
1382  * @vdev: pointer to vdev
1383  * @vp_id: vpath to reset
1384  *
1385  * Resets the vpath
1386 */
1387 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1388 {
1389         enum vxge_hw_status status = VXGE_HW_OK;
1390         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1391         int ret = 0;
1392
1393         /* check if device is down already */
1394         if (unlikely(!is_vxge_card_up(vdev)))
1395                 return 0;
1396
1397         /* is device reset already scheduled */
1398         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1399                 return 0;
1400
1401         if (vpath->handle) {
1402                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1403                         if (is_vxge_card_up(vdev) &&
1404                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1405                                         != VXGE_HW_OK) {
1406                                 vxge_debug_init(VXGE_ERR,
1407                                         "vxge_hw_vpath_recover_from_reset"
1408                                         "failed for vpath:%d", vp_id);
1409                                 return status;
1410                         }
1411                 } else {
1412                         vxge_debug_init(VXGE_ERR,
1413                                 "vxge_hw_vpath_reset failed for"
1414                                 "vpath:%d", vp_id);
1415                                 return status;
1416                 }
1417         } else
1418                 return VXGE_HW_FAIL;
1419
1420         vxge_restore_vpath_mac_addr(vpath);
1421         vxge_restore_vpath_vid_table(vpath);
1422
1423         /* Enable all broadcast */
1424         vxge_hw_vpath_bcast_enable(vpath->handle);
1425
1426         /* Enable all multicast */
1427         if (vdev->all_multi_flg) {
1428                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1429                 if (status != VXGE_HW_OK)
1430                         vxge_debug_init(VXGE_ERR,
1431                                 "%s:%d Enabling multicast failed",
1432                                 __func__, __LINE__);
1433         }
1434
1435         /* Enable the interrupts */
1436         vxge_vpath_intr_enable(vdev, vp_id);
1437
1438         smp_wmb();
1439
1440         /* Enable the flow of traffic through the vpath */
1441         vxge_hw_vpath_enable(vpath->handle);
1442
1443         smp_wmb();
1444         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1445         vpath->ring.last_status = VXGE_HW_OK;
1446
1447         /* Vpath reset done */
1448         clear_bit(vp_id, &vdev->vp_reset);
1449
1450         /* Start the vpath queue */
1451         vxge_wake_tx_queue(&vpath->fifo);
1452
1453         return ret;
1454 }
1455
1456 static int do_vxge_reset(struct vxgedev *vdev, int event)
1457 {
1458         enum vxge_hw_status status;
1459         int ret = 0, vp_id, i;
1460
1461         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1462
1463         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1464                 /* check if device is down already */
1465                 if (unlikely(!is_vxge_card_up(vdev)))
1466                         return 0;
1467
1468                 /* is reset already scheduled */
1469                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1470                         return 0;
1471         }
1472
1473         if (event == VXGE_LL_FULL_RESET) {
1474                 /* wait for all the vpath reset to complete */
1475                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1476                         while (test_bit(vp_id, &vdev->vp_reset))
1477                                 msleep(50);
1478                 }
1479
1480                 /* if execution mode is set to debug, don't reset the adapter */
1481                 if (unlikely(vdev->exec_mode)) {
1482                         vxge_debug_init(VXGE_ERR,
1483                                 "%s: execution mode is debug, returning..",
1484                                 vdev->ndev->name);
1485                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1486                         netif_tx_stop_all_queues(vdev->ndev);
1487                         return 0;
1488                 }
1489         }
1490
1491         if (event == VXGE_LL_FULL_RESET) {
1492                 vxge_hw_device_intr_disable(vdev->devh);
1493
1494                 switch (vdev->cric_err_event) {
1495                 case VXGE_HW_EVENT_UNKNOWN:
1496                         netif_tx_stop_all_queues(vdev->ndev);
1497                         vxge_debug_init(VXGE_ERR,
1498                                 "fatal: %s: Disabling device due to"
1499                                 "unknown error",
1500                                 vdev->ndev->name);
1501                         ret = -EPERM;
1502                         goto out;
1503                 case VXGE_HW_EVENT_RESET_START:
1504                         break;
1505                 case VXGE_HW_EVENT_RESET_COMPLETE:
1506                 case VXGE_HW_EVENT_LINK_DOWN:
1507                 case VXGE_HW_EVENT_LINK_UP:
1508                 case VXGE_HW_EVENT_ALARM_CLEARED:
1509                 case VXGE_HW_EVENT_ECCERR:
1510                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1511                         ret = -EPERM;
1512                         goto out;
1513                 case VXGE_HW_EVENT_FIFO_ERR:
1514                 case VXGE_HW_EVENT_VPATH_ERR:
1515                         break;
1516                 case VXGE_HW_EVENT_CRITICAL_ERR:
1517                         netif_tx_stop_all_queues(vdev->ndev);
1518                         vxge_debug_init(VXGE_ERR,
1519                                 "fatal: %s: Disabling device due to"
1520                                 "serious error",
1521                                 vdev->ndev->name);
1522                         /* SOP or device reset required */
1523                         /* This event is not currently used */
1524                         ret = -EPERM;
1525                         goto out;
1526                 case VXGE_HW_EVENT_SERR:
1527                         netif_tx_stop_all_queues(vdev->ndev);
1528                         vxge_debug_init(VXGE_ERR,
1529                                 "fatal: %s: Disabling device due to"
1530                                 "serious error",
1531                                 vdev->ndev->name);
1532                         ret = -EPERM;
1533                         goto out;
1534                 case VXGE_HW_EVENT_SRPCIM_SERR:
1535                 case VXGE_HW_EVENT_MRPCIM_SERR:
1536                         ret = -EPERM;
1537                         goto out;
1538                 case VXGE_HW_EVENT_SLOT_FREEZE:
1539                         netif_tx_stop_all_queues(vdev->ndev);
1540                         vxge_debug_init(VXGE_ERR,
1541                                 "fatal: %s: Disabling device due to"
1542                                 "slot freeze",
1543                                 vdev->ndev->name);
1544                         ret = -EPERM;
1545                         goto out;
1546                 default:
1547                         break;
1548
1549                 }
1550         }
1551
1552         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1553                 netif_tx_stop_all_queues(vdev->ndev);
1554
1555         if (event == VXGE_LL_FULL_RESET) {
1556                 status = vxge_reset_all_vpaths(vdev);
1557                 if (status != VXGE_HW_OK) {
1558                         vxge_debug_init(VXGE_ERR,
1559                                 "fatal: %s: can not reset vpaths",
1560                                 vdev->ndev->name);
1561                         ret = -EPERM;
1562                         goto out;
1563                 }
1564         }
1565
1566         if (event == VXGE_LL_COMPL_RESET) {
1567                 for (i = 0; i < vdev->no_of_vpath; i++)
1568                         if (vdev->vpaths[i].handle) {
1569                                 if (vxge_hw_vpath_recover_from_reset(
1570                                         vdev->vpaths[i].handle)
1571                                                 != VXGE_HW_OK) {
1572                                         vxge_debug_init(VXGE_ERR,
1573                                                 "vxge_hw_vpath_recover_"
1574                                                 "from_reset failed for vpath: "
1575                                                 "%d", i);
1576                                         ret = -EPERM;
1577                                         goto out;
1578                                 }
1579                                 } else {
1580                                         vxge_debug_init(VXGE_ERR,
1581                                         "vxge_hw_vpath_reset failed for "
1582                                                 "vpath:%d", i);
1583                                         ret = -EPERM;
1584                                         goto out;
1585                                 }
1586         }
1587
1588         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1589                 /* Reprogram the DA table with populated mac addresses */
1590                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1591                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1592                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1593                 }
1594
1595                 /* enable vpath interrupts */
1596                 for (i = 0; i < vdev->no_of_vpath; i++)
1597                         vxge_vpath_intr_enable(vdev, i);
1598
1599                 vxge_hw_device_intr_enable(vdev->devh);
1600
1601                 smp_wmb();
1602
1603                 /* Indicate card up */
1604                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1605
1606                 /* Get the traffic to flow through the vpaths */
1607                 for (i = 0; i < vdev->no_of_vpath; i++) {
1608                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1609                         smp_wmb();
1610                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1611                 }
1612
1613                 netif_tx_wake_all_queues(vdev->ndev);
1614         }
1615
1616 out:
1617         vxge_debug_entryexit(VXGE_TRACE,
1618                 "%s:%d  Exiting...", __func__, __LINE__);
1619
1620         /* Indicate reset done */
1621         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1622                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1623         return ret;
1624 }
1625
1626 /*
1627  * vxge_reset
1628  * @vdev: pointer to ll device
1629  *
1630  * driver may reset the chip on events of serr, eccerr, etc
1631  */
1632 int vxge_reset(struct vxgedev *vdev)
1633 {
1634         return do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1635 }
1636
1637 /**
1638  * vxge_poll - Receive handler when Receive Polling is used.
1639  * @dev: pointer to the device structure.
1640  * @budget: Number of packets budgeted to be processed in this iteration.
1641  *
1642  * This function comes into picture only if Receive side is being handled
1643  * through polling (called NAPI in linux). It mostly does what the normal
1644  * Rx interrupt handler does in terms of descriptor and packet processing
1645  * but not in an interrupt context. Also it will process a specified number
1646  * of packets at most in one iteration. This value is passed down by the
1647  * kernel as the function argument 'budget'.
1648  */
1649 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1650 {
1651         struct vxge_ring *ring =
1652                 container_of(napi, struct vxge_ring, napi);
1653         int budget_org = budget;
1654         ring->budget = budget;
1655
1656         vxge_hw_vpath_poll_rx(ring->handle);
1657
1658         if (ring->pkts_processed < budget_org) {
1659                 napi_complete(napi);
1660                 /* Re enable the Rx interrupts for the vpath */
1661                 vxge_hw_channel_msix_unmask(
1662                                 (struct __vxge_hw_channel *)ring->handle,
1663                                 ring->rx_vector_no);
1664         }
1665
1666         return ring->pkts_processed;
1667 }
1668
1669 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1670 {
1671         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1672         int pkts_processed = 0;
1673         int i;
1674         int budget_org = budget;
1675         struct vxge_ring *ring;
1676
1677         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1678                 pci_get_drvdata(vdev->pdev);
1679
1680         for (i = 0; i < vdev->no_of_vpath; i++) {
1681                 ring = &vdev->vpaths[i].ring;
1682                 ring->budget = budget;
1683                 vxge_hw_vpath_poll_rx(ring->handle);
1684                 pkts_processed += ring->pkts_processed;
1685                 budget -= ring->pkts_processed;
1686                 if (budget <= 0)
1687                         break;
1688         }
1689
1690         VXGE_COMPLETE_ALL_TX(vdev);
1691
1692         if (pkts_processed < budget_org) {
1693                 napi_complete(napi);
1694                 /* Re enable the Rx interrupts for the ring */
1695                 vxge_hw_device_unmask_all(hldev);
1696                 vxge_hw_device_flush_io(hldev);
1697         }
1698
1699         return pkts_processed;
1700 }
1701
1702 #ifdef CONFIG_NET_POLL_CONTROLLER
1703 /**
1704  * vxge_netpoll - netpoll event handler entry point
1705  * @dev : pointer to the device structure.
1706  * Description:
1707  *      This function will be called by upper layer to check for events on the
1708  * interface in situations where interrupts are disabled. It is used for
1709  * specific in-kernel networking tasks, such as remote consoles and kernel
1710  * debugging over the network (example netdump in RedHat).
1711  */
1712 static void vxge_netpoll(struct net_device *dev)
1713 {
1714         struct __vxge_hw_device  *hldev;
1715         struct vxgedev *vdev;
1716
1717         vdev = (struct vxgedev *)netdev_priv(dev);
1718         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1719
1720         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1721
1722         if (pci_channel_offline(vdev->pdev))
1723                 return;
1724
1725         disable_irq(dev->irq);
1726         vxge_hw_device_clear_tx_rx(hldev);
1727
1728         vxge_hw_device_clear_tx_rx(hldev);
1729         VXGE_COMPLETE_ALL_RX(vdev);
1730         VXGE_COMPLETE_ALL_TX(vdev);
1731
1732         enable_irq(dev->irq);
1733
1734         vxge_debug_entryexit(VXGE_TRACE,
1735                 "%s:%d  Exiting...", __func__, __LINE__);
1736 }
1737 #endif
1738
1739 /* RTH configuration */
1740 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1741 {
1742         enum vxge_hw_status status = VXGE_HW_OK;
1743         struct vxge_hw_rth_hash_types hash_types;
1744         u8 itable[256] = {0}; /* indirection table */
1745         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1746         int index;
1747
1748         /*
1749          * Filling
1750          *      - itable with bucket numbers
1751          *      - mtable with bucket-to-vpath mapping
1752          */
1753         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1754                 itable[index] = index;
1755                 mtable[index] = index % vdev->no_of_vpath;
1756         }
1757
1758         /* Fill RTH hash types */
1759         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1760         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1761         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1762         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1763         hash_types.hash_type_tcpipv6ex_en =
1764                                         vdev->config.rth_hash_type_tcpipv6ex;
1765         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1766
1767         /* set indirection table, bucket-to-vpath mapping */
1768         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1769                                                 vdev->no_of_vpath,
1770                                                 mtable, itable,
1771                                                 vdev->config.rth_bkt_sz);
1772         if (status != VXGE_HW_OK) {
1773                 vxge_debug_init(VXGE_ERR,
1774                         "RTH indirection table configuration failed "
1775                         "for vpath:%d", vdev->vpaths[0].device_id);
1776                 return status;
1777         }
1778
1779         /*
1780         * Because the itable_set() method uses the active_table field
1781         * for the target virtual path the RTH config should be updated
1782         * for all VPATHs. The h/w only uses the lowest numbered VPATH
1783         * when steering frames.
1784         */
1785          for (index = 0; index < vdev->no_of_vpath; index++) {
1786                 status = vxge_hw_vpath_rts_rth_set(
1787                                 vdev->vpaths[index].handle,
1788                                 vdev->config.rth_algorithm,
1789                                 &hash_types,
1790                                 vdev->config.rth_bkt_sz);
1791
1792                  if (status != VXGE_HW_OK) {
1793                         vxge_debug_init(VXGE_ERR,
1794                                 "RTH configuration failed for vpath:%d",
1795                                 vdev->vpaths[index].device_id);
1796                         return status;
1797                  }
1798          }
1799
1800         return status;
1801 }
1802
1803 int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1804 {
1805         struct vxge_mac_addrs *new_mac_entry;
1806         u8 *mac_address = NULL;
1807
1808         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1809                 return TRUE;
1810
1811         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1812         if (!new_mac_entry) {
1813                 vxge_debug_mem(VXGE_ERR,
1814                         "%s: memory allocation failed",
1815                         VXGE_DRIVER_NAME);
1816                 return FALSE;
1817         }
1818
1819         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1820
1821         /* Copy the new mac address to the list */
1822         mac_address = (u8 *)&new_mac_entry->macaddr;
1823         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1824
1825         new_mac_entry->state = mac->state;
1826         vpath->mac_addr_cnt++;
1827
1828         /* Is this a multicast address */
1829         if (0x01 & mac->macaddr[0])
1830                 vpath->mcast_addr_cnt++;
1831
1832         return TRUE;
1833 }
1834
1835 /* Add a mac address to DA table */
1836 enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1837 {
1838         enum vxge_hw_status status = VXGE_HW_OK;
1839         struct vxge_vpath *vpath;
1840         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1841
1842         if (0x01 & mac->macaddr[0]) /* multicast address */
1843                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1844         else
1845                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1846
1847         vpath = &vdev->vpaths[mac->vpath_no];
1848         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1849                                                 mac->macmask, duplicate_mode);
1850         if (status != VXGE_HW_OK) {
1851                 vxge_debug_init(VXGE_ERR,
1852                         "DA config add entry failed for vpath:%d",
1853                         vpath->device_id);
1854         } else
1855                 if (FALSE == vxge_mac_list_add(vpath, mac))
1856                         status = -EPERM;
1857
1858         return status;
1859 }
1860
1861 int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1862 {
1863         struct list_head *entry, *next;
1864         u64 del_mac = 0;
1865         u8 *mac_address = (u8 *) (&del_mac);
1866
1867         /* Copy the mac address to delete from the list */
1868         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1869
1870         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1871                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1872                         list_del(entry);
1873                         kfree((struct vxge_mac_addrs *)entry);
1874                         vpath->mac_addr_cnt--;
1875
1876                         /* Is this a multicast address */
1877                         if (0x01 & mac->macaddr[0])
1878                                 vpath->mcast_addr_cnt--;
1879                         return TRUE;
1880                 }
1881         }
1882
1883         return FALSE;
1884 }
1885 /* delete a mac address from DA table */
1886 enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1887 {
1888         enum vxge_hw_status status = VXGE_HW_OK;
1889         struct vxge_vpath *vpath;
1890
1891         vpath = &vdev->vpaths[mac->vpath_no];
1892         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1893                                                 mac->macmask);
1894         if (status != VXGE_HW_OK) {
1895                 vxge_debug_init(VXGE_ERR,
1896                         "DA config delete entry failed for vpath:%d",
1897                         vpath->device_id);
1898         } else
1899                 vxge_mac_list_del(vpath, mac);
1900         return status;
1901 }
1902
1903 /* list all mac addresses from DA table */
1904 enum vxge_hw_status
1905 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1906                                         struct macInfo *mac)
1907 {
1908         enum vxge_hw_status status = VXGE_HW_OK;
1909         unsigned char macmask[ETH_ALEN];
1910         unsigned char macaddr[ETH_ALEN];
1911
1912         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1913                                 macaddr, macmask);
1914         if (status != VXGE_HW_OK) {
1915                 vxge_debug_init(VXGE_ERR,
1916                         "DA config list entry failed for vpath:%d",
1917                         vpath->device_id);
1918                 return status;
1919         }
1920
1921         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1922
1923                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1924                                 macaddr, macmask);
1925                 if (status != VXGE_HW_OK)
1926                         break;
1927         }
1928
1929         return status;
1930 }
1931
1932 /* Store all vlan ids from the list to the vid table */
1933 enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1934 {
1935         enum vxge_hw_status status = VXGE_HW_OK;
1936         struct vxgedev *vdev = vpath->vdev;
1937         u16 vid;
1938
1939         if (vdev->vlgrp && vpath->is_open) {
1940
1941                 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1942                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1943                                 continue;
1944                         /* Add these vlan to the vid table */
1945                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1946                 }
1947         }
1948
1949         return status;
1950 }
1951
1952 /* Store all mac addresses from the list to the DA table */
1953 enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1954 {
1955         enum vxge_hw_status status = VXGE_HW_OK;
1956         struct macInfo mac_info;
1957         u8 *mac_address = NULL;
1958         struct list_head *entry, *next;
1959
1960         memset(&mac_info, 0, sizeof(struct macInfo));
1961
1962         if (vpath->is_open) {
1963
1964                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1965                         mac_address =
1966                                 (u8 *)&
1967                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1968                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1969                         ((struct vxge_mac_addrs *)entry)->state =
1970                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1971                         /* does this mac address already exist in da table? */
1972                         status = vxge_search_mac_addr_in_da_table(vpath,
1973                                 &mac_info);
1974                         if (status != VXGE_HW_OK) {
1975                                 /* Add this mac address to the DA table */
1976                                 status = vxge_hw_vpath_mac_addr_add(
1977                                         vpath->handle, mac_info.macaddr,
1978                                         mac_info.macmask,
1979                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1980                                 if (status != VXGE_HW_OK) {
1981                                         vxge_debug_init(VXGE_ERR,
1982                                             "DA add entry failed for vpath:%d",
1983                                             vpath->device_id);
1984                                         ((struct vxge_mac_addrs *)entry)->state
1985                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1986                                 }
1987                         }
1988                 }
1989         }
1990
1991         return status;
1992 }
1993
1994 /* reset vpaths */
1995 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1996 {
1997         enum vxge_hw_status status = VXGE_HW_OK;
1998         struct vxge_vpath *vpath;
1999         int i;
2000
2001         for (i = 0; i < vdev->no_of_vpath; i++) {
2002                 vpath = &vdev->vpaths[i];
2003                 if (vpath->handle) {
2004                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
2005                                 if (is_vxge_card_up(vdev) &&
2006                                         vxge_hw_vpath_recover_from_reset(
2007                                                 vpath->handle) != VXGE_HW_OK) {
2008                                         vxge_debug_init(VXGE_ERR,
2009                                                 "vxge_hw_vpath_recover_"
2010                                                 "from_reset failed for vpath: "
2011                                                 "%d", i);
2012                                         return status;
2013                                 }
2014                         } else {
2015                                 vxge_debug_init(VXGE_ERR,
2016                                         "vxge_hw_vpath_reset failed for "
2017                                         "vpath:%d", i);
2018                                         return status;
2019                         }
2020                 }
2021         }
2022
2023         return status;
2024 }
2025
2026 /* close vpaths */
2027 void vxge_close_vpaths(struct vxgedev *vdev, int index)
2028 {
2029         struct vxge_vpath *vpath;
2030         int i;
2031
2032         for (i = index; i < vdev->no_of_vpath; i++) {
2033                 vpath = &vdev->vpaths[i];
2034
2035                 if (vpath->handle && vpath->is_open) {
2036                         vxge_hw_vpath_close(vpath->handle);
2037                         vdev->stats.vpaths_open--;
2038                 }
2039                 vpath->is_open = 0;
2040                 vpath->handle = NULL;
2041         }
2042 }
2043
2044 /* open vpaths */
2045 int vxge_open_vpaths(struct vxgedev *vdev)
2046 {
2047         struct vxge_hw_vpath_attr attr;
2048         enum vxge_hw_status status;
2049         struct vxge_vpath *vpath;
2050         u32 vp_id = 0;
2051         int i;
2052
2053         for (i = 0; i < vdev->no_of_vpath; i++) {
2054                 vpath = &vdev->vpaths[i];
2055
2056                 vxge_assert(vpath->is_configured);
2057                 attr.vp_id = vpath->device_id;
2058                 attr.fifo_attr.callback = vxge_xmit_compl;
2059                 attr.fifo_attr.txdl_term = vxge_tx_term;
2060                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2061                 attr.fifo_attr.userdata = &vpath->fifo;
2062
2063                 attr.ring_attr.callback = vxge_rx_1b_compl;
2064                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2065                 attr.ring_attr.rxd_term = vxge_rx_term;
2066                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2067                 attr.ring_attr.userdata = &vpath->ring;
2068
2069                 vpath->ring.ndev = vdev->ndev;
2070                 vpath->ring.pdev = vdev->pdev;
2071                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2072                 if (status == VXGE_HW_OK) {
2073                         vpath->fifo.handle =
2074                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2075                         vpath->ring.handle =
2076                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2077                         vpath->fifo.tx_steering_type =
2078                                 vdev->config.tx_steering_type;
2079                         vpath->fifo.ndev = vdev->ndev;
2080                         vpath->fifo.pdev = vdev->pdev;
2081                         vpath->fifo.indicate_max_pkts =
2082                                 vdev->config.fifo_indicate_max_pkts;
2083                         vpath->ring.rx_vector_no = 0;
2084                         vpath->ring.rx_csum = vdev->rx_csum;
2085                         vpath->is_open = 1;
2086                         vdev->vp_handles[i] = vpath->handle;
2087                         vpath->ring.gro_enable = vdev->config.gro_enable;
2088                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2089                         vdev->stats.vpaths_open++;
2090                 } else {
2091                         vdev->stats.vpath_open_fail++;
2092                         vxge_debug_init(VXGE_ERR,
2093                                 "%s: vpath: %d failed to open "
2094                                 "with status: %d",
2095                             vdev->ndev->name, vpath->device_id,
2096                                 status);
2097                         vxge_close_vpaths(vdev, 0);
2098                         return -EPERM;
2099                 }
2100
2101                 vp_id = vpath->handle->vpath->vp_id;
2102                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2103         }
2104         return VXGE_HW_OK;
2105 }
2106
2107 /*
2108  *  vxge_isr_napi
2109  *  @irq: the irq of the device.
2110  *  @dev_id: a void pointer to the hldev structure of the Titan device
2111  *  @ptregs: pointer to the registers pushed on the stack.
2112  *
2113  *  This function is the ISR handler of the device when napi is enabled. It
2114  *  identifies the reason for the interrupt and calls the relevant service
2115  *  routines.
2116  */
2117 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2118 {
2119         struct net_device *dev;
2120         struct __vxge_hw_device *hldev;
2121         u64 reason;
2122         enum vxge_hw_status status;
2123         struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2124
2125         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2126
2127         dev = vdev->ndev;
2128         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2129
2130         if (pci_channel_offline(vdev->pdev))
2131                 return IRQ_NONE;
2132
2133         if (unlikely(!is_vxge_card_up(vdev)))
2134                 return IRQ_NONE;
2135
2136         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2137                         &reason);
2138         if (status == VXGE_HW_OK) {
2139                 vxge_hw_device_mask_all(hldev);
2140
2141                 if (reason &
2142                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2143                         vdev->vpaths_deployed >>
2144                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2145
2146                         vxge_hw_device_clear_tx_rx(hldev);
2147                         napi_schedule(&vdev->napi);
2148                         vxge_debug_intr(VXGE_TRACE,
2149                                 "%s:%d  Exiting...", __func__, __LINE__);
2150                         return IRQ_HANDLED;
2151                 } else
2152                         vxge_hw_device_unmask_all(hldev);
2153         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2154                 (status == VXGE_HW_ERR_CRITICAL) ||
2155                 (status == VXGE_HW_ERR_FIFO))) {
2156                 vxge_hw_device_mask_all(hldev);
2157                 vxge_hw_device_flush_io(hldev);
2158                 return IRQ_HANDLED;
2159         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2160                 return IRQ_HANDLED;
2161
2162         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2163         return IRQ_NONE;
2164 }
2165
2166 #ifdef CONFIG_PCI_MSI
2167
2168 static irqreturn_t
2169 vxge_tx_msix_handle(int irq, void *dev_id)
2170 {
2171         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2172
2173         VXGE_COMPLETE_VPATH_TX(fifo);
2174
2175         return IRQ_HANDLED;
2176 }
2177
2178 static irqreturn_t
2179 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2180 {
2181         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2182
2183         /* MSIX_IDX for Rx is 1 */
2184         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2185                                         ring->rx_vector_no);
2186
2187         napi_schedule(&ring->napi);
2188         return IRQ_HANDLED;
2189 }
2190
2191 static irqreturn_t
2192 vxge_alarm_msix_handle(int irq, void *dev_id)
2193 {
2194         int i;
2195         enum vxge_hw_status status;
2196         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2197         struct vxgedev *vdev = vpath->vdev;
2198         int msix_id = (vpath->handle->vpath->vp_id *
2199                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2200
2201         for (i = 0; i < vdev->no_of_vpath; i++) {
2202                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2203
2204                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2205                         vdev->exec_mode);
2206                 if (status == VXGE_HW_OK) {
2207
2208                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2209                                         msix_id);
2210                         continue;
2211                 }
2212                 vxge_debug_intr(VXGE_ERR,
2213                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2214                         VXGE_DRIVER_NAME, status);
2215         }
2216         return IRQ_HANDLED;
2217 }
2218
2219 static int vxge_alloc_msix(struct vxgedev *vdev)
2220 {
2221         int j, i, ret = 0;
2222         int msix_intr_vect = 0, temp;
2223         vdev->intr_cnt = 0;
2224
2225 start:
2226         /* Tx/Rx MSIX Vectors count */
2227         vdev->intr_cnt = vdev->no_of_vpath * 2;
2228
2229         /* Alarm MSIX Vectors count */
2230         vdev->intr_cnt++;
2231
2232         vdev->entries = kzalloc(vdev->intr_cnt * sizeof(struct msix_entry),
2233                                                 GFP_KERNEL);
2234         if (!vdev->entries) {
2235                 vxge_debug_init(VXGE_ERR,
2236                         "%s: memory allocation failed",
2237                         VXGE_DRIVER_NAME);
2238                 ret = -ENOMEM;
2239                 goto alloc_entries_failed;
2240         }
2241
2242         vdev->vxge_entries =
2243                 kzalloc(vdev->intr_cnt * sizeof(struct vxge_msix_entry),
2244                                 GFP_KERNEL);
2245         if (!vdev->vxge_entries) {
2246                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2247                         VXGE_DRIVER_NAME);
2248                 ret = -ENOMEM;
2249                 goto alloc_vxge_entries_failed;
2250         }
2251
2252         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2253
2254                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2255
2256                 /* Initialize the fifo vector */
2257                 vdev->entries[j].entry = msix_intr_vect;
2258                 vdev->vxge_entries[j].entry = msix_intr_vect;
2259                 vdev->vxge_entries[j].in_use = 0;
2260                 j++;
2261
2262                 /* Initialize the ring vector */
2263                 vdev->entries[j].entry = msix_intr_vect + 1;
2264                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2265                 vdev->vxge_entries[j].in_use = 0;
2266                 j++;
2267         }
2268
2269         /* Initialize the alarm vector */
2270         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2271         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2272         vdev->vxge_entries[j].in_use = 0;
2273
2274         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2275         if (ret > 0) {
2276                 vxge_debug_init(VXGE_ERR,
2277                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2278                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2279                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2280                         ret = -ENODEV;
2281                         goto enable_msix_failed;
2282                 }
2283
2284                 kfree(vdev->entries);
2285                 kfree(vdev->vxge_entries);
2286                 vdev->entries = NULL;
2287                 vdev->vxge_entries = NULL;
2288                 /* Try with less no of vector by reducing no of vpaths count */
2289                 temp = (ret - 1)/2;
2290                 vxge_close_vpaths(vdev, temp);
2291                 vdev->no_of_vpath = temp;
2292                 goto start;
2293         } else if (ret < 0) {
2294                 ret = -ENODEV;
2295                 goto enable_msix_failed;
2296         }
2297         return 0;
2298
2299 enable_msix_failed:
2300         kfree(vdev->vxge_entries);
2301 alloc_vxge_entries_failed:
2302         kfree(vdev->entries);
2303 alloc_entries_failed:
2304         return ret;
2305 }
2306
2307 static int vxge_enable_msix(struct vxgedev *vdev)
2308 {
2309
2310         int i, ret = 0;
2311         /* 0 - Tx, 1 - Rx  */
2312         int tim_msix_id[4] = {0, 1, 0, 0};
2313
2314         vdev->intr_cnt = 0;
2315
2316         /* allocate msix vectors */
2317         ret = vxge_alloc_msix(vdev);
2318         if (!ret) {
2319                 for (i = 0; i < vdev->no_of_vpath; i++) {
2320                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2321
2322                         /* If fifo or ring are not enabled, the MSIX vector for
2323                          * it should be set to 0.
2324                          */
2325                         vpath->ring.rx_vector_no = (vpath->device_id *
2326                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2327
2328                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2329                                                VXGE_ALARM_MSIX_ID);
2330                 }
2331         }
2332
2333         return ret;
2334 }
2335
2336 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2337 {
2338         int intr_cnt;
2339
2340         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2341                 intr_cnt++) {
2342                 if (vdev->vxge_entries[intr_cnt].in_use) {
2343                         synchronize_irq(vdev->entries[intr_cnt].vector);
2344                         free_irq(vdev->entries[intr_cnt].vector,
2345                                 vdev->vxge_entries[intr_cnt].arg);
2346                         vdev->vxge_entries[intr_cnt].in_use = 0;
2347                 }
2348         }
2349
2350         kfree(vdev->entries);
2351         kfree(vdev->vxge_entries);
2352         vdev->entries = NULL;
2353         vdev->vxge_entries = NULL;
2354
2355         if (vdev->config.intr_type == MSI_X)
2356                 pci_disable_msix(vdev->pdev);
2357 }
2358 #endif
2359
2360 static void vxge_rem_isr(struct vxgedev *vdev)
2361 {
2362         struct __vxge_hw_device  *hldev;
2363         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2364
2365 #ifdef CONFIG_PCI_MSI
2366         if (vdev->config.intr_type == MSI_X) {
2367                 vxge_rem_msix_isr(vdev);
2368         } else
2369 #endif
2370         if (vdev->config.intr_type == INTA) {
2371                         synchronize_irq(vdev->pdev->irq);
2372                         free_irq(vdev->pdev->irq, vdev);
2373         }
2374 }
2375
2376 static int vxge_add_isr(struct vxgedev *vdev)
2377 {
2378         int ret = 0;
2379 #ifdef CONFIG_PCI_MSI
2380         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2381         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2382
2383         if (vdev->config.intr_type == MSI_X)
2384                 ret = vxge_enable_msix(vdev);
2385
2386         if (ret) {
2387                 vxge_debug_init(VXGE_ERR,
2388                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2389                 vxge_debug_init(VXGE_ERR,
2390                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2391                 vdev->config.intr_type = INTA;
2392         }
2393
2394         if (vdev->config.intr_type == MSI_X) {
2395                 for (intr_idx = 0;
2396                      intr_idx < (vdev->no_of_vpath *
2397                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2398
2399                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2400                         irq_req = 0;
2401
2402                         switch (msix_idx) {
2403                         case 0:
2404                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2405                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2406                                         vdev->ndev->name,
2407                                         vdev->entries[intr_cnt].entry,
2408                                         pci_fun, vp_idx);
2409                                 ret = request_irq(
2410                                     vdev->entries[intr_cnt].vector,
2411                                         vxge_tx_msix_handle, 0,
2412                                         vdev->desc[intr_cnt],
2413                                         &vdev->vpaths[vp_idx].fifo);
2414                                         vdev->vxge_entries[intr_cnt].arg =
2415                                                 &vdev->vpaths[vp_idx].fifo;
2416                                 irq_req = 1;
2417                                 break;
2418                         case 1:
2419                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2420                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2421                                         vdev->ndev->name,
2422                                         vdev->entries[intr_cnt].entry,
2423                                         pci_fun, vp_idx);
2424                                 ret = request_irq(
2425                                     vdev->entries[intr_cnt].vector,
2426                                         vxge_rx_msix_napi_handle,
2427                                         0,
2428                                         vdev->desc[intr_cnt],
2429                                         &vdev->vpaths[vp_idx].ring);
2430                                         vdev->vxge_entries[intr_cnt].arg =
2431                                                 &vdev->vpaths[vp_idx].ring;
2432                                 irq_req = 1;
2433                                 break;
2434                         }
2435
2436                         if (ret) {
2437                                 vxge_debug_init(VXGE_ERR,
2438                                         "%s: MSIX - %d  Registration failed",
2439                                         vdev->ndev->name, intr_cnt);
2440                                 vxge_rem_msix_isr(vdev);
2441                                 vdev->config.intr_type = INTA;
2442                                 vxge_debug_init(VXGE_ERR,
2443                                         "%s: Defaulting to INTA"
2444                                         , vdev->ndev->name);
2445                                         goto INTA_MODE;
2446                         }
2447
2448                         if (irq_req) {
2449                                 /* We requested for this msix interrupt */
2450                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2451                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2452                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2453                                 vxge_hw_vpath_msix_unmask(
2454                                         vdev->vpaths[vp_idx].handle,
2455                                         msix_idx);
2456                                 intr_cnt++;
2457                         }
2458
2459                         /* Point to next vpath handler */
2460                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2461                             (vp_idx < (vdev->no_of_vpath - 1)))
2462                                 vp_idx++;
2463                 }
2464
2465                 intr_cnt = vdev->no_of_vpath * 2;
2466                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2467                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2468                         vdev->ndev->name,
2469                         vdev->entries[intr_cnt].entry,
2470                         pci_fun);
2471                 /* For Alarm interrupts */
2472                 ret = request_irq(vdev->entries[intr_cnt].vector,
2473                                         vxge_alarm_msix_handle, 0,
2474                                         vdev->desc[intr_cnt],
2475                                         &vdev->vpaths[0]);
2476                 if (ret) {
2477                         vxge_debug_init(VXGE_ERR,
2478                                 "%s: MSIX - %d Registration failed",
2479                                 vdev->ndev->name, intr_cnt);
2480                         vxge_rem_msix_isr(vdev);
2481                         vdev->config.intr_type = INTA;
2482                         vxge_debug_init(VXGE_ERR,
2483                                 "%s: Defaulting to INTA",
2484                                 vdev->ndev->name);
2485                                 goto INTA_MODE;
2486                 }
2487
2488                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2489                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2490                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2491                                         msix_idx);
2492                 vdev->vxge_entries[intr_cnt].in_use = 1;
2493                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2494         }
2495 INTA_MODE:
2496 #endif
2497
2498         if (vdev->config.intr_type == INTA) {
2499                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2500                         "%s:vxge:INTA", vdev->ndev->name);
2501                 vxge_hw_device_set_intr_type(vdev->devh,
2502                         VXGE_HW_INTR_MODE_IRQLINE);
2503                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2504                         vdev->vpaths[0].device_id);
2505                 ret = request_irq((int) vdev->pdev->irq,
2506                         vxge_isr_napi,
2507                         IRQF_SHARED, vdev->desc[0], vdev);
2508                 if (ret) {
2509                         vxge_debug_init(VXGE_ERR,
2510                                 "%s %s-%d: ISR registration failed",
2511                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2512                         return -ENODEV;
2513                 }
2514                 vxge_debug_init(VXGE_TRACE,
2515                         "new %s-%d line allocated",
2516                         "IRQ", vdev->pdev->irq);
2517         }
2518
2519         return VXGE_HW_OK;
2520 }
2521
2522 static void vxge_poll_vp_reset(unsigned long data)
2523 {
2524         struct vxgedev *vdev = (struct vxgedev *)data;
2525         int i, j = 0;
2526
2527         for (i = 0; i < vdev->no_of_vpath; i++) {
2528                 if (test_bit(i, &vdev->vp_reset)) {
2529                         vxge_reset_vpath(vdev, i);
2530                         j++;
2531                 }
2532         }
2533         if (j && (vdev->config.intr_type != MSI_X)) {
2534                 vxge_hw_device_unmask_all(vdev->devh);
2535                 vxge_hw_device_flush_io(vdev->devh);
2536         }
2537
2538         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2539 }
2540
2541 static void vxge_poll_vp_lockup(unsigned long data)
2542 {
2543         struct vxgedev *vdev = (struct vxgedev *)data;
2544         enum vxge_hw_status status = VXGE_HW_OK;
2545         struct vxge_vpath *vpath;
2546         struct vxge_ring *ring;
2547         int i;
2548
2549         for (i = 0; i < vdev->no_of_vpath; i++) {
2550                 ring = &vdev->vpaths[i].ring;
2551                 /* Did this vpath received any packets */
2552                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2553                         status = vxge_hw_vpath_check_leak(ring->handle);
2554
2555                         /* Did it received any packets last time */
2556                         if ((VXGE_HW_FAIL == status) &&
2557                                 (VXGE_HW_FAIL == ring->last_status)) {
2558
2559                                 /* schedule vpath reset */
2560                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2561                                         vpath = &vdev->vpaths[i];
2562
2563                                         /* disable interrupts for this vpath */
2564                                         vxge_vpath_intr_disable(vdev, i);
2565
2566                                         /* stop the queue for this vpath */
2567                                         vxge_stop_tx_queue(&vpath->fifo);
2568                                         continue;
2569                                 }
2570                         }
2571                 }
2572                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2573                 ring->last_status = status;
2574         }
2575
2576         /* Check every 1 milli second */
2577         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2578 }
2579
2580 /**
2581  * vxge_open
2582  * @dev: pointer to the device structure.
2583  *
2584  * This function is the open entry point of the driver. It mainly calls a
2585  * function to allocate Rx buffers and inserts them into the buffer
2586  * descriptors and then enables the Rx part of the NIC.
2587  * Return value: '0' on success and an appropriate (-)ve integer as
2588  * defined in errno.h file on failure.
2589  */
2590 int
2591 vxge_open(struct net_device *dev)
2592 {
2593         enum vxge_hw_status status;
2594         struct vxgedev *vdev;
2595         struct __vxge_hw_device *hldev;
2596         struct vxge_vpath *vpath;
2597         int ret = 0;
2598         int i;
2599         u64 val64, function_mode;
2600         vxge_debug_entryexit(VXGE_TRACE,
2601                 "%s: %s:%d", dev->name, __func__, __LINE__);
2602
2603         vdev = (struct vxgedev *)netdev_priv(dev);
2604         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2605         function_mode = vdev->config.device_hw_info.function_mode;
2606
2607         /* make sure you have link off by default every time Nic is
2608          * initialized */
2609         netif_carrier_off(dev);
2610
2611         /* Open VPATHs */
2612         status = vxge_open_vpaths(vdev);
2613         if (status != VXGE_HW_OK) {
2614                 vxge_debug_init(VXGE_ERR,
2615                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2616                 ret = -EPERM;
2617                 goto out0;
2618         }
2619
2620         vdev->mtu = dev->mtu;
2621
2622         status = vxge_add_isr(vdev);
2623         if (status != VXGE_HW_OK) {
2624                 vxge_debug_init(VXGE_ERR,
2625                         "%s: fatal: ISR add failed", dev->name);
2626                 ret = -EPERM;
2627                 goto out1;
2628         }
2629
2630
2631         if (vdev->config.intr_type != MSI_X) {
2632                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2633                         vdev->config.napi_weight);
2634                 napi_enable(&vdev->napi);
2635                 for (i = 0; i < vdev->no_of_vpath; i++) {
2636                         vpath = &vdev->vpaths[i];
2637                         vpath->ring.napi_p = &vdev->napi;
2638                 }
2639         } else {
2640                 for (i = 0; i < vdev->no_of_vpath; i++) {
2641                         vpath = &vdev->vpaths[i];
2642                         netif_napi_add(dev, &vpath->ring.napi,
2643                             vxge_poll_msix, vdev->config.napi_weight);
2644                         napi_enable(&vpath->ring.napi);
2645                         vpath->ring.napi_p = &vpath->ring.napi;
2646                 }
2647         }
2648
2649         /* configure RTH */
2650         if (vdev->config.rth_steering) {
2651                 status = vxge_rth_configure(vdev);
2652                 if (status != VXGE_HW_OK) {
2653                         vxge_debug_init(VXGE_ERR,
2654                                 "%s: fatal: RTH configuration failed",
2655                                 dev->name);
2656                         ret = -EPERM;
2657                         goto out2;
2658                 }
2659         }
2660
2661         for (i = 0; i < vdev->no_of_vpath; i++) {
2662                 vpath = &vdev->vpaths[i];
2663
2664                 /* set initial mtu before enabling the device */
2665                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2666                 if (status != VXGE_HW_OK) {
2667                         vxge_debug_init(VXGE_ERR,
2668                                 "%s: fatal: can not set new MTU", dev->name);
2669                         ret = -EPERM;
2670                         goto out2;
2671                 }
2672         }
2673
2674         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2675         vxge_debug_init(vdev->level_trace,
2676                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2677         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2678
2679         /* Restore the DA, VID table and also multicast and promiscuous mode
2680          * states
2681          */
2682         if (vdev->all_multi_flg) {
2683                 for (i = 0; i < vdev->no_of_vpath; i++) {
2684                         vpath = &vdev->vpaths[i];
2685                         vxge_restore_vpath_mac_addr(vpath);
2686                         vxge_restore_vpath_vid_table(vpath);
2687
2688                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2689                         if (status != VXGE_HW_OK)
2690                                 vxge_debug_init(VXGE_ERR,
2691                                         "%s:%d Enabling multicast failed",
2692                                         __func__, __LINE__);
2693                 }
2694         }
2695
2696         /* Enable vpath to sniff all unicast/multicast traffic that not
2697          * addressed to them. We allow promiscous mode for PF only
2698          */
2699
2700         val64 = 0;
2701         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2702                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2703
2704         vxge_hw_mgmt_reg_write(vdev->devh,
2705                 vxge_hw_mgmt_reg_type_mrpcim,
2706                 0,
2707                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2708                         rxmac_authorize_all_addr),
2709                 val64);
2710
2711         vxge_hw_mgmt_reg_write(vdev->devh,
2712                 vxge_hw_mgmt_reg_type_mrpcim,
2713                 0,
2714                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2715                         rxmac_authorize_all_vid),
2716                 val64);
2717
2718         vxge_set_multicast(dev);
2719
2720         /* Enabling Bcast and mcast for all vpath */
2721         for (i = 0; i < vdev->no_of_vpath; i++) {
2722                 vpath = &vdev->vpaths[i];
2723                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2724                 if (status != VXGE_HW_OK)
2725                         vxge_debug_init(VXGE_ERR,
2726                                 "%s : Can not enable bcast for vpath "
2727                                 "id %d", dev->name, i);
2728                 if (vdev->config.addr_learn_en) {
2729                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2730                         if (status != VXGE_HW_OK)
2731                                 vxge_debug_init(VXGE_ERR,
2732                                         "%s : Can not enable mcast for vpath "
2733                                         "id %d", dev->name, i);
2734                 }
2735         }
2736
2737         vxge_hw_device_setpause_data(vdev->devh, 0,
2738                 vdev->config.tx_pause_enable,
2739                 vdev->config.rx_pause_enable);
2740
2741         if (vdev->vp_reset_timer.function == NULL)
2742                 vxge_os_timer(vdev->vp_reset_timer,
2743                         vxge_poll_vp_reset, vdev, (HZ/2));
2744
2745         if (vdev->vp_lockup_timer.function == NULL)
2746                 vxge_os_timer(vdev->vp_lockup_timer,
2747                         vxge_poll_vp_lockup, vdev, (HZ/2));
2748
2749         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2750
2751         smp_wmb();
2752
2753         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2754                 netif_carrier_on(vdev->ndev);
2755                 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2756                 vdev->stats.link_up++;
2757         }
2758
2759         vxge_hw_device_intr_enable(vdev->devh);
2760
2761         smp_wmb();
2762
2763         for (i = 0; i < vdev->no_of_vpath; i++) {
2764                 vpath = &vdev->vpaths[i];
2765
2766                 vxge_hw_vpath_enable(vpath->handle);
2767                 smp_wmb();
2768                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2769         }
2770
2771         netif_tx_start_all_queues(vdev->ndev);
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 }
2818
2819 int do_vxge_close(struct net_device *dev, int do_io)
2820 {
2821         enum vxge_hw_status status;
2822         struct vxgedev *vdev;
2823         struct __vxge_hw_device *hldev;
2824         int i;
2825         u64 val64, vpath_vector;
2826         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2827                 dev->name, __func__, __LINE__);
2828
2829         vdev = (struct vxgedev *)netdev_priv(dev);
2830         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2831
2832         if (unlikely(!is_vxge_card_up(vdev)))
2833                 return 0;
2834
2835         /* If vxge_handle_crit_err task is executing,
2836          * wait till it completes. */
2837         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2838                 msleep(50);
2839
2840         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2841         if (do_io) {
2842                 /* Put the vpath back in normal mode */
2843                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2844                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2845                                 vxge_hw_mgmt_reg_type_mrpcim,
2846                                 0,
2847                                 (ulong)offsetof(
2848                                         struct vxge_hw_mrpcim_reg,
2849                                         rts_mgr_cbasin_cfg),
2850                                 &val64);
2851
2852                 if (status == VXGE_HW_OK) {
2853                         val64 &= ~vpath_vector;
2854                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2855                                         vxge_hw_mgmt_reg_type_mrpcim,
2856                                         0,
2857                                         (ulong)offsetof(
2858                                                 struct vxge_hw_mrpcim_reg,
2859                                                 rts_mgr_cbasin_cfg),
2860                                         val64);
2861                 }
2862
2863                 /* Remove the function 0 from promiscous mode */
2864                 vxge_hw_mgmt_reg_write(vdev->devh,
2865                         vxge_hw_mgmt_reg_type_mrpcim,
2866                         0,
2867                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2868                                 rxmac_authorize_all_addr),
2869                         0);
2870
2871                 vxge_hw_mgmt_reg_write(vdev->devh,
2872                         vxge_hw_mgmt_reg_type_mrpcim,
2873                         0,
2874                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2875                                 rxmac_authorize_all_vid),
2876                         0);
2877
2878                 smp_wmb();
2879         }
2880         del_timer_sync(&vdev->vp_lockup_timer);
2881
2882         del_timer_sync(&vdev->vp_reset_timer);
2883
2884         /* Disable napi */
2885         if (vdev->config.intr_type != MSI_X)
2886                 napi_disable(&vdev->napi);
2887         else {
2888                 for (i = 0; i < vdev->no_of_vpath; i++)
2889                         napi_disable(&vdev->vpaths[i].ring.napi);
2890         }
2891
2892         netif_carrier_off(vdev->ndev);
2893         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2894         netif_tx_stop_all_queues(vdev->ndev);
2895
2896         /* Note that at this point xmit() is stopped by upper layer */
2897         if (do_io)
2898                 vxge_hw_device_intr_disable(vdev->devh);
2899
2900         mdelay(1000);
2901
2902         vxge_rem_isr(vdev);
2903
2904         vxge_napi_del_all(vdev);
2905
2906         if (do_io)
2907                 vxge_reset_all_vpaths(vdev);
2908
2909         vxge_close_vpaths(vdev, 0);
2910
2911         vxge_debug_entryexit(VXGE_TRACE,
2912                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2913
2914         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2915
2916         return 0;
2917 }
2918
2919 /**
2920  * vxge_close
2921  * @dev: device pointer.
2922  *
2923  * This is the stop entry point of the driver. It needs to undo exactly
2924  * whatever was done by the open entry point, thus it's usually referred to
2925  * as the close function.Among other things this function mainly stops the
2926  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2927  * Return value: '0' on success and an appropriate (-)ve integer as
2928  * defined in errno.h file on failure.
2929  */
2930 int
2931 vxge_close(struct net_device *dev)
2932 {
2933         do_vxge_close(dev, 1);
2934         return 0;
2935 }
2936
2937 /**
2938  * vxge_change_mtu
2939  * @dev: net device pointer.
2940  * @new_mtu :the new MTU size for the device.
2941  *
2942  * A driver entry point to change MTU size for the device. Before changing
2943  * the MTU the device must be stopped.
2944  */
2945 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2946 {
2947         struct vxgedev *vdev = netdev_priv(dev);
2948
2949         vxge_debug_entryexit(vdev->level_trace,
2950                 "%s:%d", __func__, __LINE__);
2951         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2952                 vxge_debug_init(vdev->level_err,
2953                         "%s: mtu size is invalid", dev->name);
2954                 return -EPERM;
2955         }
2956
2957         /* check if device is down already */
2958         if (unlikely(!is_vxge_card_up(vdev))) {
2959                 /* just store new value, will use later on open() */
2960                 dev->mtu = new_mtu;
2961                 vxge_debug_init(vdev->level_err,
2962                         "%s", "device is down on MTU change");
2963                 return 0;
2964         }
2965
2966         vxge_debug_init(vdev->level_trace,
2967                 "trying to apply new MTU %d", new_mtu);
2968
2969         if (vxge_close(dev))
2970                 return -EIO;
2971
2972         dev->mtu = new_mtu;
2973         vdev->mtu = new_mtu;
2974
2975         if (vxge_open(dev))
2976                 return -EIO;
2977
2978         vxge_debug_init(vdev->level_trace,
2979                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2980
2981         vxge_debug_entryexit(vdev->level_trace,
2982                 "%s:%d  Exiting...", __func__, __LINE__);
2983
2984         return 0;
2985 }
2986
2987 /**
2988  * vxge_get_stats
2989  * @dev: pointer to the device structure
2990  *
2991  * Updates the device statistics structure. This function updates the device
2992  * statistics structure in the net_device structure and returns a pointer
2993  * to the same.
2994  */
2995 static struct net_device_stats *
2996 vxge_get_stats(struct net_device *dev)
2997 {
2998         struct vxgedev *vdev;
2999         struct net_device_stats *net_stats;
3000         int k;
3001
3002         vdev = netdev_priv(dev);
3003
3004         net_stats = &vdev->stats.net_stats;
3005
3006         memset(net_stats, 0, sizeof(struct net_device_stats));
3007
3008         for (k = 0; k < vdev->no_of_vpath; k++) {
3009                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3010                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3011                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3012                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3013                 net_stats->rx_dropped +=
3014                         vdev->vpaths[k].ring.stats.rx_dropped;
3015
3016                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3017                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3018                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3019         }
3020
3021         return net_stats;
3022 }
3023
3024 /**
3025  * vxge_ioctl
3026  * @dev: Device pointer.
3027  * @ifr: An IOCTL specific structure, that can contain a pointer to
3028  *       a proprietary structure used to pass information to the driver.
3029  * @cmd: This is used to distinguish between the different commands that
3030  *       can be passed to the IOCTL functions.
3031  *
3032  * Entry point for the Ioctl.
3033  */
3034 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3035 {
3036         return -EOPNOTSUPP;
3037 }
3038
3039 /**
3040  * vxge_tx_watchdog
3041  * @dev: pointer to net device structure
3042  *
3043  * Watchdog for transmit side.
3044  * This function is triggered if the Tx Queue is stopped
3045  * for a pre-defined amount of time when the Interface is still up.
3046  */
3047 static void
3048 vxge_tx_watchdog(struct net_device *dev)
3049 {
3050         struct vxgedev *vdev;
3051
3052         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3053
3054         vdev = (struct vxgedev *)netdev_priv(dev);
3055
3056         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3057
3058         vxge_reset(vdev);
3059         vxge_debug_entryexit(VXGE_TRACE,
3060                 "%s:%d  Exiting...", __func__, __LINE__);
3061 }
3062
3063 /**
3064  * vxge_vlan_rx_register
3065  * @dev: net device pointer.
3066  * @grp: vlan group
3067  *
3068  * Vlan group registration
3069  */
3070 static void
3071 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3072 {
3073         struct vxgedev *vdev;
3074         struct vxge_vpath *vpath;
3075         int vp;
3076         u64 vid;
3077         enum vxge_hw_status status;
3078         int i;
3079
3080         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3081
3082         vdev = (struct vxgedev *)netdev_priv(dev);
3083
3084         vpath = &vdev->vpaths[0];
3085         if ((NULL == grp) && (vpath->is_open)) {
3086                 /* Get the first vlan */
3087                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3088
3089                 while (status == VXGE_HW_OK) {
3090
3091                         /* Delete this vlan from the vid table */
3092                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3093                                 vpath = &vdev->vpaths[vp];
3094                                 if (!vpath->is_open)
3095                                         continue;
3096
3097                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3098                         }
3099
3100                         /* Get the next vlan to be deleted */
3101                         vpath = &vdev->vpaths[0];
3102                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3103                 }
3104         }
3105
3106         vdev->vlgrp = grp;
3107
3108         for (i = 0; i < vdev->no_of_vpath; i++) {
3109                 if (vdev->vpaths[i].is_configured)
3110                         vdev->vpaths[i].ring.vlgrp = grp;
3111         }
3112
3113         vxge_debug_entryexit(VXGE_TRACE,
3114                 "%s:%d  Exiting...", __func__, __LINE__);
3115 }
3116
3117 /**
3118  * vxge_vlan_rx_add_vid
3119  * @dev: net device pointer.
3120  * @vid: vid
3121  *
3122  * Add the vlan id to the devices vlan id table
3123  */
3124 static void
3125 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3126 {
3127         struct vxgedev *vdev;
3128         struct vxge_vpath *vpath;
3129         int vp_id;
3130
3131         vdev = (struct vxgedev *)netdev_priv(dev);
3132
3133         /* Add these vlan to the vid table */
3134         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3135                 vpath = &vdev->vpaths[vp_id];
3136                 if (!vpath->is_open)
3137                         continue;
3138                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3139         }
3140 }
3141
3142 /**
3143  * vxge_vlan_rx_add_vid
3144  * @dev: net device pointer.
3145  * @vid: vid
3146  *
3147  * Remove the vlan id from the device's vlan id table
3148  */
3149 static void
3150 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3151 {
3152         struct vxgedev *vdev;
3153         struct vxge_vpath *vpath;
3154         int vp_id;
3155
3156         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3157
3158         vdev = (struct vxgedev *)netdev_priv(dev);
3159
3160         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3161
3162         /* Delete this vlan from the vid table */
3163         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3164                 vpath = &vdev->vpaths[vp_id];
3165                 if (!vpath->is_open)
3166                         continue;
3167                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3168         }
3169         vxge_debug_entryexit(VXGE_TRACE,
3170                 "%s:%d  Exiting...", __func__, __LINE__);
3171 }
3172
3173 static const struct net_device_ops vxge_netdev_ops = {
3174         .ndo_open               = vxge_open,
3175         .ndo_stop               = vxge_close,
3176         .ndo_get_stats          = vxge_get_stats,
3177         .ndo_start_xmit         = vxge_xmit,
3178         .ndo_validate_addr      = eth_validate_addr,
3179         .ndo_set_multicast_list = vxge_set_multicast,
3180
3181         .ndo_do_ioctl           = vxge_ioctl,
3182
3183         .ndo_set_mac_address    = vxge_set_mac_addr,
3184         .ndo_change_mtu         = vxge_change_mtu,
3185         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3186         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3187         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3188
3189         .ndo_tx_timeout         = vxge_tx_watchdog,
3190 #ifdef CONFIG_NET_POLL_CONTROLLER
3191         .ndo_poll_controller    = vxge_netpoll,
3192 #endif
3193 };
3194
3195 int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3196                                    struct vxge_config *config,
3197                                    int high_dma, int no_of_vpath,
3198                                    struct vxgedev **vdev_out)
3199 {
3200         struct net_device *ndev;
3201         enum vxge_hw_status status = VXGE_HW_OK;
3202         struct vxgedev *vdev;
3203         int i, ret = 0, no_of_queue = 1;
3204         u64 stat;
3205
3206         *vdev_out = NULL;
3207         if (config->tx_steering_type)
3208                 no_of_queue = no_of_vpath;
3209
3210         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3211                         no_of_queue);
3212         if (ndev == NULL) {
3213                 vxge_debug_init(
3214                         vxge_hw_device_trace_level_get(hldev),
3215                 "%s : device allocation failed", __func__);
3216                 ret = -ENODEV;
3217                 goto _out0;
3218         }
3219
3220         vxge_debug_entryexit(
3221                 vxge_hw_device_trace_level_get(hldev),
3222                 "%s: %s:%d  Entering...",
3223                 ndev->name, __func__, __LINE__);
3224
3225         vdev = netdev_priv(ndev);
3226         memset(vdev, 0, sizeof(struct vxgedev));
3227
3228         vdev->ndev = ndev;
3229         vdev->devh = hldev;
3230         vdev->pdev = hldev->pdev;
3231         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3232         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3233
3234         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3235
3236         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3237                                 NETIF_F_HW_VLAN_FILTER;
3238         /*  Driver entry points */
3239         ndev->irq = vdev->pdev->irq;
3240         ndev->base_addr = (unsigned long) hldev->bar0;
3241
3242         ndev->netdev_ops = &vxge_netdev_ops;
3243
3244         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3245
3246         initialize_ethtool_ops(ndev);
3247
3248         /* Allocate memory for vpath */
3249         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3250                                 no_of_vpath, GFP_KERNEL);
3251         if (!vdev->vpaths) {
3252                 vxge_debug_init(VXGE_ERR,
3253                         "%s: vpath memory allocation failed",
3254                         vdev->ndev->name);
3255                 ret = -ENODEV;
3256                 goto _out1;
3257         }
3258
3259         ndev->features |= NETIF_F_SG;
3260
3261         ndev->features |= NETIF_F_HW_CSUM;
3262         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3263                 "%s : checksuming enabled", __func__);
3264
3265         if (high_dma) {
3266                 ndev->features |= NETIF_F_HIGHDMA;
3267                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3268                         "%s : using High DMA", __func__);
3269         }
3270
3271         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3272
3273         if (vdev->config.gro_enable)
3274                 ndev->features |= NETIF_F_GRO;
3275
3276 #ifdef NETIF_F_LLTX
3277         ndev->features |= NETIF_F_LLTX;
3278 #endif
3279
3280         for (i = 0; i < no_of_vpath; i++)
3281                 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3282
3283         if (register_netdev(ndev)) {
3284                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3285                         "%s: %s : device registration failed!",
3286                         ndev->name, __func__);
3287                 ret = -ENODEV;
3288                 goto _out2;
3289         }
3290
3291         /*  Set the factory defined MAC address initially */
3292         ndev->addr_len = ETH_ALEN;
3293
3294         /* Make Link state as off at this point, when the Link change
3295          * interrupt comes the state will be automatically changed to
3296          * the right state.
3297          */
3298         netif_carrier_off(ndev);
3299
3300         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3301                 "%s: Ethernet device registered",
3302                 ndev->name);
3303
3304         *vdev_out = vdev;
3305
3306         /* Resetting the Device stats */
3307         status = vxge_hw_mrpcim_stats_access(
3308                                 hldev,
3309                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3310                                 0,
3311                                 0,
3312                                 &stat);
3313
3314         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3315                 vxge_debug_init(
3316                         vxge_hw_device_trace_level_get(hldev),
3317                         "%s: device stats clear returns"
3318                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3319
3320         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3321                 "%s: %s:%d  Exiting...",
3322                 ndev->name, __func__, __LINE__);
3323
3324         return ret;
3325 _out2:
3326         kfree(vdev->vpaths);
3327 _out1:
3328         free_netdev(ndev);
3329 _out0:
3330         return ret;
3331 }
3332
3333 /*
3334  * vxge_device_unregister
3335  *
3336  * This function will unregister and free network device
3337  */
3338 void
3339 vxge_device_unregister(struct __vxge_hw_device *hldev)
3340 {
3341         struct vxgedev *vdev;
3342         struct net_device *dev;
3343         char buf[IFNAMSIZ];
3344 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3345         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3346         u32 level_trace;
3347 #endif
3348
3349         dev = hldev->ndev;
3350         vdev = netdev_priv(dev);
3351 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3352         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3353         level_trace = vdev->level_trace;
3354 #endif
3355         vxge_debug_entryexit(level_trace,
3356                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3357
3358         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3359
3360         /* in 2.6 will call stop() if device is up */
3361         unregister_netdev(dev);
3362
3363         flush_scheduled_work();
3364
3365         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3366         vxge_debug_entryexit(level_trace,
3367                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3368 }
3369
3370 /*
3371  * vxge_callback_crit_err
3372  *
3373  * This function is called by the alarm handler in interrupt context.
3374  * Driver must analyze it based on the event type.
3375  */
3376 static void
3377 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3378                         enum vxge_hw_event type, u64 vp_id)
3379 {
3380         struct net_device *dev = hldev->ndev;
3381         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3382         int vpath_idx;
3383
3384         vxge_debug_entryexit(vdev->level_trace,
3385                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3386
3387         /* Note: This event type should be used for device wide
3388          * indications only - Serious errors, Slot freeze and critical errors
3389          */
3390         vdev->cric_err_event = type;
3391
3392         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3393                 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3394                         break;
3395
3396         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3397                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3398                         vxge_debug_init(VXGE_ERR,
3399                                 "%s: Slot is frozen", vdev->ndev->name);
3400                 } else if (type == VXGE_HW_EVENT_SERR) {
3401                         vxge_debug_init(VXGE_ERR,
3402                                 "%s: Encountered Serious Error",
3403                                 vdev->ndev->name);
3404                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3405                         vxge_debug_init(VXGE_ERR,
3406                                 "%s: Encountered Critical Error",
3407                                 vdev->ndev->name);
3408         }
3409
3410         if ((type == VXGE_HW_EVENT_SERR) ||
3411                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3412                 if (unlikely(vdev->exec_mode))
3413                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3414         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3415                 vxge_hw_device_mask_all(hldev);
3416                 if (unlikely(vdev->exec_mode))
3417                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3418         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3419                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3420
3421                 if (unlikely(vdev->exec_mode))
3422                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3423                 else {
3424                         /* check if this vpath is already set for reset */
3425                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3426
3427                                 /* disable interrupts for this vpath */
3428                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3429
3430                                 /* stop the queue for this vpath */
3431                                 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3432                                                         fifo);
3433                         }
3434                 }
3435         }
3436
3437         vxge_debug_entryexit(vdev->level_trace,
3438                 "%s: %s:%d  Exiting...",
3439                 vdev->ndev->name, __func__, __LINE__);
3440 }
3441
3442 static void verify_bandwidth(void)
3443 {
3444         int i, band_width, total = 0, equal_priority = 0;
3445
3446         /* 1. If user enters 0 for some fifo, give equal priority to all */
3447         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3448                 if (bw_percentage[i] == 0) {
3449                         equal_priority = 1;
3450                         break;
3451                 }
3452         }
3453
3454         if (!equal_priority) {
3455                 /* 2. If sum exceeds 100, give equal priority to all */
3456                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3457                         if (bw_percentage[i] == 0xFF)
3458                                 break;
3459
3460                         total += bw_percentage[i];
3461                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3462                                 equal_priority = 1;
3463                                 break;
3464                         }
3465                 }
3466         }
3467
3468         if (!equal_priority) {
3469                 /* Is all the bandwidth consumed? */
3470                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3471                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3472                                 /* Split rest of bw equally among next VPs*/
3473                                 band_width =
3474                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3475                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3476                                 if (band_width < 2) /* min of 2% */
3477                                         equal_priority = 1;
3478                                 else {
3479                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3480                                                 i++)
3481                                                 bw_percentage[i] =
3482                                                         band_width;
3483                                 }
3484                         }
3485                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3486                         equal_priority = 1;
3487         }
3488
3489         if (equal_priority) {
3490                 vxge_debug_init(VXGE_ERR,
3491                         "%s: Assigning equal bandwidth to all the vpaths",
3492                         VXGE_DRIVER_NAME);
3493                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3494                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3495                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3496                         bw_percentage[i] = bw_percentage[0];
3497         }
3498 }
3499
3500 /*
3501  * Vpath configuration
3502  */
3503 static int __devinit vxge_config_vpaths(
3504                         struct vxge_hw_device_config *device_config,
3505                         u64 vpath_mask, struct vxge_config *config_param)
3506 {
3507         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3508         u32 txdl_size, txdl_per_memblock;
3509
3510         temp = driver_config->vpath_per_dev;
3511         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3512                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3513                 /* No more CPU. Return vpath number as zero.*/
3514                 if (driver_config->g_no_cpus == -1)
3515                         return 0;
3516
3517                 if (!driver_config->g_no_cpus)
3518                         driver_config->g_no_cpus = num_online_cpus();
3519
3520                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3521                 if (!driver_config->vpath_per_dev)
3522                         driver_config->vpath_per_dev = 1;
3523
3524                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3525                         if (!vxge_bVALn(vpath_mask, i, 1))
3526                                 continue;
3527                         else
3528                                 default_no_vpath++;
3529                 if (default_no_vpath < driver_config->vpath_per_dev)
3530                         driver_config->vpath_per_dev = default_no_vpath;
3531
3532                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3533                                 (driver_config->vpath_per_dev * 2);
3534                 if (driver_config->g_no_cpus <= 0)
3535                         driver_config->g_no_cpus = -1;
3536         }
3537
3538         if (driver_config->vpath_per_dev == 1) {
3539                 vxge_debug_ll_config(VXGE_TRACE,
3540                         "%s: Disable tx and rx steering, "
3541                         "as single vpath is configured", VXGE_DRIVER_NAME);
3542                 config_param->rth_steering = NO_STEERING;
3543                 config_param->tx_steering_type = NO_STEERING;
3544                 device_config->rth_en = 0;
3545         }
3546
3547         /* configure bandwidth */
3548         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3549                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3550
3551         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3552                 device_config->vp_config[i].vp_id = i;
3553                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3554                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3555                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3556                                 vxge_debug_ll_config(VXGE_TRACE,
3557                                         "%s: vpath: %d is not available",
3558                                         VXGE_DRIVER_NAME, i);
3559                                 continue;
3560                         } else {
3561                                 vxge_debug_ll_config(VXGE_TRACE,
3562                                         "%s: vpath: %d available",
3563                                         VXGE_DRIVER_NAME, i);
3564                                 no_of_vpaths++;
3565                         }
3566                 } else {
3567                         vxge_debug_ll_config(VXGE_TRACE,
3568                                 "%s: vpath: %d is not configured, "
3569                                 "max_config_vpath exceeded",
3570                                 VXGE_DRIVER_NAME, i);
3571                         break;
3572                 }
3573
3574                 /* Configure Tx fifo's */
3575                 device_config->vp_config[i].fifo.enable =
3576                                                 VXGE_HW_FIFO_ENABLE;
3577                 device_config->vp_config[i].fifo.max_frags =
3578                                 MAX_SKB_FRAGS + 1;
3579                 device_config->vp_config[i].fifo.memblock_size =
3580                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3581
3582                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3583                                 sizeof(struct vxge_hw_fifo_txd);
3584                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3585
3586                 device_config->vp_config[i].fifo.fifo_blocks =
3587                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3588
3589                 device_config->vp_config[i].fifo.intr =
3590                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3591
3592                 /* Configure tti properties */
3593                 device_config->vp_config[i].tti.intr_enable =
3594                                         VXGE_HW_TIM_INTR_ENABLE;
3595
3596                 device_config->vp_config[i].tti.btimer_val =
3597                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3598
3599                 device_config->vp_config[i].tti.timer_ac_en =
3600                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3601
3602                 /* For msi-x with napi (each vector
3603                 has a handler of its own) -
3604                 Set CI to OFF for all vpaths */
3605                 device_config->vp_config[i].tti.timer_ci_en =
3606                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3607
3608                 device_config->vp_config[i].tti.timer_ri_en =
3609                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3610
3611                 device_config->vp_config[i].tti.util_sel =
3612                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3613
3614                 device_config->vp_config[i].tti.ltimer_val =
3615                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3616
3617                 device_config->vp_config[i].tti.rtimer_val =
3618                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3619
3620                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3621                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3622                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3623                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3624                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3625                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3626                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3627
3628                 /* Configure Rx rings */
3629                 device_config->vp_config[i].ring.enable  =
3630                                                 VXGE_HW_RING_ENABLE;
3631
3632                 device_config->vp_config[i].ring.ring_blocks  =
3633                                                 VXGE_HW_DEF_RING_BLOCKS;
3634                 device_config->vp_config[i].ring.buffer_mode =
3635                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3636                 device_config->vp_config[i].ring.rxds_limit  =
3637                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3638                 device_config->vp_config[i].ring.scatter_mode =
3639                                         VXGE_HW_RING_SCATTER_MODE_A;
3640
3641                 /* Configure rti properties */
3642                 device_config->vp_config[i].rti.intr_enable =
3643                                         VXGE_HW_TIM_INTR_ENABLE;
3644
3645                 device_config->vp_config[i].rti.btimer_val =
3646                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3647
3648                 device_config->vp_config[i].rti.timer_ac_en =
3649                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3650
3651                 device_config->vp_config[i].rti.timer_ci_en =
3652                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3653
3654                 device_config->vp_config[i].rti.timer_ri_en =
3655                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3656
3657                 device_config->vp_config[i].rti.util_sel =
3658                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3659
3660                 device_config->vp_config[i].rti.urange_a =
3661                                                 RTI_RX_URANGE_A;
3662                 device_config->vp_config[i].rti.urange_b =
3663                                                 RTI_RX_URANGE_B;
3664                 device_config->vp_config[i].rti.urange_c =
3665                                                 RTI_RX_URANGE_C;
3666                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3667                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3668                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3669                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3670
3671                 device_config->vp_config[i].rti.rtimer_val =
3672                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3673
3674                 device_config->vp_config[i].rti.ltimer_val =
3675                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3676
3677                 device_config->vp_config[i].rpa_strip_vlan_tag =
3678                         vlan_tag_strip;
3679         }
3680
3681         driver_config->vpath_per_dev = temp;
3682         return no_of_vpaths;
3683 }
3684
3685 /* initialize device configuratrions */
3686 static void __devinit vxge_device_config_init(
3687                                 struct vxge_hw_device_config *device_config,
3688                                 int *intr_type)
3689 {
3690         /* Used for CQRQ/SRQ. */
3691         device_config->dma_blockpool_initial =
3692                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3693
3694         device_config->dma_blockpool_max =
3695                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3696
3697         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3698                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3699
3700 #ifndef CONFIG_PCI_MSI
3701         vxge_debug_init(VXGE_ERR,
3702                 "%s: This Kernel does not support "
3703                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3704         *intr_type = INTA;
3705 #endif
3706
3707         /* Configure whether MSI-X or IRQL. */
3708         switch (*intr_type) {
3709         case INTA:
3710                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3711                 break;
3712
3713         case MSI_X:
3714                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3715                 break;
3716         }
3717         /* Timer period between device poll */
3718         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3719
3720         /* Configure mac based steering. */
3721         device_config->rts_mac_en = addr_learn_en;
3722
3723         /* Configure Vpaths */
3724         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3725
3726         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3727                         __func__);
3728         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3729                         device_config->dma_blockpool_initial);
3730         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3731                         device_config->dma_blockpool_max);
3732         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3733                         device_config->intr_mode);
3734         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3735                         device_config->device_poll_millis);
3736         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3737                         device_config->rts_mac_en);
3738         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3739                         device_config->rth_en);
3740         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3741                         device_config->rth_it_type);
3742 }
3743
3744 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3745 {
3746         int i;
3747
3748         vxge_debug_init(VXGE_TRACE,
3749                 "%s: %d Vpath(s) opened",
3750                 vdev->ndev->name, vdev->no_of_vpath);
3751
3752         switch (vdev->config.intr_type) {
3753         case INTA:
3754                 vxge_debug_init(VXGE_TRACE,
3755                         "%s: Interrupt type INTA", vdev->ndev->name);
3756                 break;
3757
3758         case MSI_X:
3759                 vxge_debug_init(VXGE_TRACE,
3760                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3761                 break;
3762         }
3763
3764         if (vdev->config.rth_steering) {
3765                 vxge_debug_init(VXGE_TRACE,
3766                         "%s: RTH steering enabled for TCP_IPV4",
3767                         vdev->ndev->name);
3768         } else {
3769                 vxge_debug_init(VXGE_TRACE,
3770                         "%s: RTH steering disabled", vdev->ndev->name);
3771         }
3772
3773         switch (vdev->config.tx_steering_type) {
3774         case NO_STEERING:
3775                 vxge_debug_init(VXGE_TRACE,
3776                         "%s: Tx steering disabled", vdev->ndev->name);
3777                 break;
3778         case TX_PRIORITY_STEERING:
3779                 vxge_debug_init(VXGE_TRACE,
3780                         "%s: Unsupported tx steering option",
3781                         vdev->ndev->name);
3782                 vxge_debug_init(VXGE_TRACE,
3783                         "%s: Tx steering disabled", vdev->ndev->name);
3784                 vdev->config.tx_steering_type = 0;
3785                 break;
3786         case TX_VLAN_STEERING:
3787                 vxge_debug_init(VXGE_TRACE,
3788                         "%s: Unsupported tx steering option",
3789                         vdev->ndev->name);
3790                 vxge_debug_init(VXGE_TRACE,
3791                         "%s: Tx steering disabled", vdev->ndev->name);
3792                 vdev->config.tx_steering_type = 0;
3793                 break;
3794         case TX_MULTIQ_STEERING:
3795                 vxge_debug_init(VXGE_TRACE,
3796                         "%s: Tx multiqueue steering enabled",
3797                         vdev->ndev->name);
3798                 break;
3799         case TX_PORT_STEERING:
3800                 vxge_debug_init(VXGE_TRACE,
3801                         "%s: Tx port steering enabled",
3802                         vdev->ndev->name);
3803                 break;
3804         default:
3805                 vxge_debug_init(VXGE_ERR,
3806                         "%s: Unsupported tx steering type",
3807                         vdev->ndev->name);
3808                 vxge_debug_init(VXGE_TRACE,
3809                         "%s: Tx steering disabled", vdev->ndev->name);
3810                 vdev->config.tx_steering_type = 0;
3811         }
3812
3813         if (vdev->config.gro_enable) {
3814                 vxge_debug_init(VXGE_ERR,
3815                         "%s: Generic receive offload enabled",
3816                         vdev->ndev->name);
3817         } else
3818                 vxge_debug_init(VXGE_TRACE,
3819                         "%s: Generic receive offload disabled",
3820                         vdev->ndev->name);
3821
3822         if (vdev->config.addr_learn_en)
3823                 vxge_debug_init(VXGE_TRACE,
3824                         "%s: MAC Address learning enabled", vdev->ndev->name);
3825
3826         vxge_debug_init(VXGE_TRACE,
3827                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3828
3829         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3830                 if (!vxge_bVALn(vpath_mask, i, 1))
3831                         continue;
3832                 vxge_debug_ll_config(VXGE_TRACE,
3833                         "%s: MTU size - %d", vdev->ndev->name,
3834                         ((struct __vxge_hw_device  *)(vdev->devh))->
3835                                 config.vp_config[i].mtu);
3836                 vxge_debug_init(VXGE_TRACE,
3837                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3838                         ((struct __vxge_hw_device  *)(vdev->devh))->
3839                                 config.vp_config[i].rpa_strip_vlan_tag
3840                         ? "Enabled" : "Disabled");
3841                 vxge_debug_init(VXGE_TRACE,
3842                         "%s: Ring blocks : %d", vdev->ndev->name,
3843                         ((struct __vxge_hw_device  *)(vdev->devh))->
3844                                 config.vp_config[i].ring.ring_blocks);
3845                 vxge_debug_init(VXGE_TRACE,
3846                         "%s: Fifo blocks : %d", vdev->ndev->name,
3847                         ((struct __vxge_hw_device  *)(vdev->devh))->
3848                                 config.vp_config[i].fifo.fifo_blocks);
3849                 vxge_debug_ll_config(VXGE_TRACE,
3850                         "%s: Max frags : %d", vdev->ndev->name,
3851                         ((struct __vxge_hw_device  *)(vdev->devh))->
3852                                 config.vp_config[i].fifo.max_frags);
3853                 break;
3854         }
3855 }
3856
3857 #ifdef CONFIG_PM
3858 /**
3859  * vxge_pm_suspend - vxge power management suspend entry point
3860  *
3861  */
3862 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3863 {
3864         return -ENOSYS;
3865 }
3866 /**
3867  * vxge_pm_resume - vxge power management resume entry point
3868  *
3869  */
3870 static int vxge_pm_resume(struct pci_dev *pdev)
3871 {
3872         return -ENOSYS;
3873 }
3874
3875 #endif
3876
3877 /**
3878  * vxge_io_error_detected - called when PCI error is detected
3879  * @pdev: Pointer to PCI device
3880  * @state: The current pci connection state
3881  *
3882  * This function is called after a PCI bus error affecting
3883  * this device has been detected.
3884  */
3885 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3886                                                 pci_channel_state_t state)
3887 {
3888         struct __vxge_hw_device  *hldev =
3889                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3890         struct net_device *netdev = hldev->ndev;
3891
3892         netif_device_detach(netdev);
3893
3894         if (state == pci_channel_io_perm_failure)
3895                 return PCI_ERS_RESULT_DISCONNECT;
3896
3897         if (netif_running(netdev)) {
3898                 /* Bring down the card, while avoiding PCI I/O */
3899                 do_vxge_close(netdev, 0);
3900         }
3901
3902         pci_disable_device(pdev);
3903
3904         return PCI_ERS_RESULT_NEED_RESET;
3905 }
3906
3907 /**
3908  * vxge_io_slot_reset - called after the pci bus has been reset.
3909  * @pdev: Pointer to PCI device
3910  *
3911  * Restart the card from scratch, as if from a cold-boot.
3912  * At this point, the card has exprienced a hard reset,
3913  * followed by fixups by BIOS, and has its config space
3914  * set up identically to what it was at cold boot.
3915  */
3916 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3917 {
3918         struct __vxge_hw_device  *hldev =
3919                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3920         struct net_device *netdev = hldev->ndev;
3921
3922         struct vxgedev *vdev = netdev_priv(netdev);
3923
3924         if (pci_enable_device(pdev)) {
3925                 printk(KERN_ERR "%s: "
3926                         "Cannot re-enable device after reset\n",
3927                         VXGE_DRIVER_NAME);
3928                 return PCI_ERS_RESULT_DISCONNECT;
3929         }
3930
3931         pci_set_master(pdev);
3932         vxge_reset(vdev);
3933
3934         return PCI_ERS_RESULT_RECOVERED;
3935 }
3936
3937 /**
3938  * vxge_io_resume - called when traffic can start flowing again.
3939  * @pdev: Pointer to PCI device
3940  *
3941  * This callback is called when the error recovery driver tells
3942  * us that its OK to resume normal operation.
3943  */
3944 static void vxge_io_resume(struct pci_dev *pdev)
3945 {
3946         struct __vxge_hw_device  *hldev =
3947                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3948         struct net_device *netdev = hldev->ndev;
3949
3950         if (netif_running(netdev)) {
3951                 if (vxge_open(netdev)) {
3952                         printk(KERN_ERR "%s: "
3953                                 "Can't bring device back up after reset\n",
3954                                 VXGE_DRIVER_NAME);
3955                         return;
3956                 }
3957         }
3958
3959         netif_device_attach(netdev);
3960 }
3961
3962 static inline u32 vxge_get_num_vfs(u64 function_mode)
3963 {
3964         u32 num_functions = 0;
3965
3966         switch (function_mode) {
3967         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
3968         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
3969                 num_functions = 8;
3970                 break;
3971         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
3972                 num_functions = 1;
3973                 break;
3974         case VXGE_HW_FUNCTION_MODE_SRIOV:
3975         case VXGE_HW_FUNCTION_MODE_MRIOV:
3976         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
3977                 num_functions = 17;
3978                 break;
3979         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
3980                 num_functions = 4;
3981                 break;
3982         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
3983                 num_functions = 2;
3984                 break;
3985         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
3986                 num_functions = 8; /* TODO */
3987                 break;
3988         }
3989         return num_functions;
3990 }
3991
3992 /**
3993  * vxge_probe
3994  * @pdev : structure containing the PCI related information of the device.
3995  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
3996  * Description:
3997  * This function is called when a new PCI device gets detected and initializes
3998  * it.
3999  * Return value:
4000  * returns 0 on success and negative on failure.
4001  *
4002  */
4003 static int __devinit
4004 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4005 {
4006         struct __vxge_hw_device  *hldev;
4007         enum vxge_hw_status status;
4008         int ret;
4009         int high_dma = 0;
4010         u64 vpath_mask = 0;
4011         struct vxgedev *vdev;
4012         struct vxge_config *ll_config = NULL;
4013         struct vxge_hw_device_config *device_config = NULL;
4014         struct vxge_hw_device_attr attr;
4015         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4016         u8 *macaddr;
4017         struct vxge_mac_addrs *entry;
4018         static int bus = -1, device = -1;
4019         u32 host_type;
4020         u8 new_device = 0;
4021         enum vxge_hw_status is_privileged;
4022         u32 function_mode;
4023         u32 num_vfs = 0;
4024
4025         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4026         attr.pdev = pdev;
4027
4028         /* In SRIOV-17 mode, functions of the same adapter
4029          * can be deployed on different buses */
4030         if ((!pdev->is_virtfn) && ((bus != pdev->bus->number) ||
4031                 (device != PCI_SLOT(pdev->devfn))))
4032                 new_device = 1;
4033
4034         bus = pdev->bus->number;
4035         device = PCI_SLOT(pdev->devfn);
4036
4037         if (new_device) {
4038                 if (driver_config->config_dev_cnt &&
4039                    (driver_config->config_dev_cnt !=
4040                         driver_config->total_dev_cnt))
4041                         vxge_debug_init(VXGE_ERR,
4042                                 "%s: Configured %d of %d devices",
4043                                 VXGE_DRIVER_NAME,
4044                                 driver_config->config_dev_cnt,
4045                                 driver_config->total_dev_cnt);
4046                 driver_config->config_dev_cnt = 0;
4047                 driver_config->total_dev_cnt = 0;
4048         }
4049         /* Now making the CPU based no of vpath calculation
4050          * applicable for individual functions as well.
4051          */
4052         driver_config->g_no_cpus = 0;
4053         driver_config->vpath_per_dev = max_config_vpath;
4054
4055         driver_config->total_dev_cnt++;
4056         if (++driver_config->config_dev_cnt > max_config_dev) {
4057                 ret = 0;
4058                 goto _exit0;
4059         }
4060
4061         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4062                 GFP_KERNEL);
4063         if (!device_config) {
4064                 ret = -ENOMEM;
4065                 vxge_debug_init(VXGE_ERR,
4066                         "device_config : malloc failed %s %d",
4067                         __FILE__, __LINE__);
4068                 goto _exit0;
4069         }
4070
4071         ll_config = kzalloc(sizeof(*ll_config), GFP_KERNEL);
4072         if (!ll_config) {
4073                 ret = -ENOMEM;
4074                 vxge_debug_init(VXGE_ERR,
4075                         "ll_config : malloc failed %s %d",
4076                         __FILE__, __LINE__);
4077                 goto _exit0;
4078         }
4079         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4080         ll_config->intr_type = MSI_X;
4081         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4082         ll_config->rth_steering = RTH_STEERING;
4083
4084         /* get the default configuration parameters */
4085         vxge_hw_device_config_default_get(device_config);
4086
4087         /* initialize configuration parameters */
4088         vxge_device_config_init(device_config, &ll_config->intr_type);
4089
4090         ret = pci_enable_device(pdev);
4091         if (ret) {
4092                 vxge_debug_init(VXGE_ERR,
4093                         "%s : can not enable PCI device", __func__);
4094                 goto _exit0;
4095         }
4096
4097         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4098                 vxge_debug_ll_config(VXGE_TRACE,
4099                         "%s : using 64bit DMA", __func__);
4100
4101                 high_dma = 1;
4102
4103                 if (pci_set_consistent_dma_mask(pdev,
4104                                                 DMA_BIT_MASK(64))) {
4105                         vxge_debug_init(VXGE_ERR,
4106                                 "%s : unable to obtain 64bit DMA for "
4107                                 "consistent allocations", __func__);
4108                         ret = -ENOMEM;
4109                         goto _exit1;
4110                 }
4111         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4112                 vxge_debug_ll_config(VXGE_TRACE,
4113                         "%s : using 32bit DMA", __func__);
4114         } else {
4115                 ret = -ENOMEM;
4116                 goto _exit1;
4117         }
4118
4119         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4120                 vxge_debug_init(VXGE_ERR,
4121                         "%s : request regions failed", __func__);
4122                 ret = -ENODEV;
4123                 goto _exit1;
4124         }
4125
4126         pci_set_master(pdev);
4127
4128         attr.bar0 = pci_ioremap_bar(pdev, 0);
4129         if (!attr.bar0) {
4130                 vxge_debug_init(VXGE_ERR,
4131                         "%s : cannot remap io memory bar0", __func__);
4132                 ret = -ENODEV;
4133                 goto _exit2;
4134         }
4135         vxge_debug_ll_config(VXGE_TRACE,
4136                 "pci ioremap bar0: %p:0x%llx",
4137                 attr.bar0,
4138                 (unsigned long long)pci_resource_start(pdev, 0));
4139
4140         status = vxge_hw_device_hw_info_get(attr.bar0,
4141                         &ll_config->device_hw_info);
4142         if (status != VXGE_HW_OK) {
4143                 vxge_debug_init(VXGE_ERR,
4144                         "%s: Reading of hardware info failed."
4145                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4146                 ret = -EINVAL;
4147                 goto _exit3;
4148         }
4149
4150         if (ll_config->device_hw_info.fw_version.major !=
4151                 VXGE_DRIVER_FW_VERSION_MAJOR) {
4152                 vxge_debug_init(VXGE_ERR,
4153                         "%s: Incorrect firmware version."
4154                         "Please upgrade the firmware to version 1.x.x",
4155                         VXGE_DRIVER_NAME);
4156                 ret = -EINVAL;
4157                 goto _exit3;
4158         }
4159
4160         vpath_mask = ll_config->device_hw_info.vpath_mask;
4161         if (vpath_mask == 0) {
4162                 vxge_debug_ll_config(VXGE_TRACE,
4163                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4164                 ret = -EINVAL;
4165                 goto _exit3;
4166         }
4167
4168         vxge_debug_ll_config(VXGE_TRACE,
4169                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4170                 (unsigned long long)vpath_mask);
4171
4172         function_mode = ll_config->device_hw_info.function_mode;
4173         host_type = ll_config->device_hw_info.host_type;
4174         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4175                 ll_config->device_hw_info.func_id);
4176
4177         /* Check how many vpaths are available */
4178         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4179                 if (!((vpath_mask) & vxge_mBIT(i)))
4180                         continue;
4181                 max_vpath_supported++;
4182         }
4183
4184         if (new_device)
4185                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4186
4187         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4188         if (is_sriov(function_mode) && (max_config_dev > 1) &&
4189                 (ll_config->intr_type != INTA) &&
4190                 (is_privileged == VXGE_HW_OK)) {
4191                 ret = pci_enable_sriov(pdev, ((max_config_dev - 1) < num_vfs)
4192                         ? (max_config_dev - 1) : num_vfs);
4193                 if (ret)
4194                         vxge_debug_ll_config(VXGE_ERR,
4195                                 "Failed in enabling SRIOV mode: %d\n", ret);
4196         }
4197
4198         /*
4199          * Configure vpaths and get driver configured number of vpaths
4200          * which is less than or equal to the maximum vpaths per function.
4201          */
4202         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4203         if (!no_of_vpath) {
4204                 vxge_debug_ll_config(VXGE_ERR,
4205                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4206                 ret = 0;
4207                 goto _exit3;
4208         }
4209
4210         /* Setting driver callbacks */
4211         attr.uld_callbacks.link_up = vxge_callback_link_up;
4212         attr.uld_callbacks.link_down = vxge_callback_link_down;
4213         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4214
4215         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4216         if (status != VXGE_HW_OK) {
4217                 vxge_debug_init(VXGE_ERR,
4218                         "Failed to initialize device (%d)", status);
4219                         ret = -EINVAL;
4220                         goto _exit3;
4221         }
4222
4223         /* if FCS stripping is not disabled in MAC fail driver load */
4224         if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) {
4225                 vxge_debug_init(VXGE_ERR,
4226                         "%s: FCS stripping is not disabled in MAC"
4227                         " failing driver load", VXGE_DRIVER_NAME);
4228                 ret = -EINVAL;
4229                 goto _exit4;
4230         }
4231
4232         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4233
4234         /* set private device info */
4235         pci_set_drvdata(pdev, hldev);
4236
4237         ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4238         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4239         ll_config->addr_learn_en = addr_learn_en;
4240         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4241         ll_config->rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4242         ll_config->rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4243         ll_config->rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4244         ll_config->rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4245         ll_config->rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4246         ll_config->rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4247         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4248         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4249         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4250
4251         if (vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4252                 &vdev)) {
4253                 ret = -EINVAL;
4254                 goto _exit4;
4255         }
4256
4257         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4258         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4259                 vxge_hw_device_trace_level_get(hldev));
4260
4261         /* set private HW device info */
4262         hldev->ndev = vdev->ndev;
4263         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4264         vdev->bar0 = attr.bar0;
4265         vdev->max_vpath_supported = max_vpath_supported;
4266         vdev->no_of_vpath = no_of_vpath;
4267
4268         /* Virtual Path count */
4269         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4270                 if (!vxge_bVALn(vpath_mask, i, 1))
4271                         continue;
4272                 if (j >= vdev->no_of_vpath)
4273                         break;
4274
4275                 vdev->vpaths[j].is_configured = 1;
4276                 vdev->vpaths[j].device_id = i;
4277                 vdev->vpaths[j].fifo.driver_id = j;
4278                 vdev->vpaths[j].ring.driver_id = j;
4279                 vdev->vpaths[j].vdev = vdev;
4280                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4281                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4282                                 ll_config->device_hw_info.mac_addrs[i],
4283                                 ETH_ALEN);
4284
4285                 /* Initialize the mac address list header */
4286                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4287
4288                 vdev->vpaths[j].mac_addr_cnt = 0;
4289                 vdev->vpaths[j].mcast_addr_cnt = 0;
4290                 j++;
4291         }
4292         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4293         vdev->max_config_port = max_config_port;
4294
4295         vdev->vlan_tag_strip = vlan_tag_strip;
4296
4297         /* map the hashing selector table to the configured vpaths */
4298         for (i = 0; i < vdev->no_of_vpath; i++)
4299                 vdev->vpath_selector[i] = vpath_selector[i];
4300
4301         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4302
4303         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4304         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4305         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4306
4307         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4308                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4309
4310         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4311                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4312
4313         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4314                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4315
4316         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4317                 vdev->ndev->name, macaddr);
4318
4319         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4320                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4321
4322         vxge_debug_init(VXGE_TRACE,
4323                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4324                 ll_config->device_hw_info.fw_version.version,
4325                 ll_config->device_hw_info.fw_date.date);
4326
4327         if (new_device) {
4328                 switch (ll_config->device_hw_info.function_mode) {
4329                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4330                         vxge_debug_init(VXGE_TRACE,
4331                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4332                 break;
4333                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4334                         vxge_debug_init(VXGE_TRACE,
4335                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4336                 break;
4337                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4338                         vxge_debug_init(VXGE_TRACE,
4339                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4340                 break;
4341                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4342                         vxge_debug_init(VXGE_TRACE,
4343                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4344                 break;
4345                 }
4346         }
4347
4348         vxge_print_parm(vdev, vpath_mask);
4349
4350         /* Store the fw version for ethttool option */
4351         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4352         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4353         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4354
4355         /* Copy the station mac address to the list */
4356         for (i = 0; i < vdev->no_of_vpath; i++) {
4357                 entry = (struct vxge_mac_addrs *)
4358                                 kzalloc(sizeof(struct vxge_mac_addrs),
4359                                         GFP_KERNEL);
4360                 if (NULL == entry) {
4361                         vxge_debug_init(VXGE_ERR,
4362                                 "%s: mac_addr_list : memory allocation failed",
4363                                 vdev->ndev->name);
4364                         ret = -EPERM;
4365                         goto _exit5;
4366                 }
4367                 macaddr = (u8 *)&entry->macaddr;
4368                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4369                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4370                 vdev->vpaths[i].mac_addr_cnt = 1;
4371         }
4372
4373         kfree(device_config);
4374
4375         /*
4376          * INTA is shared in multi-function mode. This is unlike the INTA
4377          * implementation in MR mode, where each VH has its own INTA message.
4378          * - INTA is masked (disabled) as long as at least one function sets
4379          * its TITAN_MASK_ALL_INT.ALARM bit.
4380          * - INTA is unmasked (enabled) when all enabled functions have cleared
4381          * their own TITAN_MASK_ALL_INT.ALARM bit.
4382          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4383          * Though this driver leaves the top level interrupts unmasked while
4384          * leaving the required module interrupt bits masked on exit, there
4385          * could be a rougue driver around that does not follow this procedure
4386          * resulting in a failure to generate interrupts. The following code is
4387          * present to prevent such a failure.
4388          */
4389
4390         if (ll_config->device_hw_info.function_mode ==
4391                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4392                 if (vdev->config.intr_type == INTA)
4393                         vxge_hw_device_unmask_all(hldev);
4394
4395         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4396                 vdev->ndev->name, __func__, __LINE__);
4397
4398         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4399         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4400                 vxge_hw_device_trace_level_get(hldev));
4401
4402         kfree(ll_config);
4403         return 0;
4404
4405 _exit5:
4406         for (i = 0; i < vdev->no_of_vpath; i++)
4407                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4408
4409         vxge_device_unregister(hldev);
4410 _exit4:
4411         pci_disable_sriov(pdev);
4412         vxge_hw_device_terminate(hldev);
4413 _exit3:
4414         iounmap(attr.bar0);
4415 _exit2:
4416         pci_release_regions(pdev);
4417 _exit1:
4418         pci_disable_device(pdev);
4419 _exit0:
4420         kfree(ll_config);
4421         kfree(device_config);
4422         driver_config->config_dev_cnt--;
4423         pci_set_drvdata(pdev, NULL);
4424         return ret;
4425 }
4426
4427 /**
4428  * vxge_rem_nic - Free the PCI device
4429  * @pdev: structure containing the PCI related information of the device.
4430  * Description: This function is called by the Pci subsystem to release a
4431  * PCI device and free up all resource held up by the device.
4432  */
4433 static void __devexit
4434 vxge_remove(struct pci_dev *pdev)
4435 {
4436         struct __vxge_hw_device  *hldev;
4437         struct vxgedev *vdev = NULL;
4438         struct net_device *dev;
4439         int i = 0;
4440 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4441         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4442         u32 level_trace;
4443 #endif
4444
4445         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4446
4447         if (hldev == NULL)
4448                 return;
4449         dev = hldev->ndev;
4450         vdev = netdev_priv(dev);
4451
4452 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4453         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4454         level_trace = vdev->level_trace;
4455 #endif
4456         vxge_debug_entryexit(level_trace,
4457                 "%s:%d", __func__, __LINE__);
4458
4459         vxge_debug_init(level_trace,
4460                 "%s : removing PCI device...", __func__);
4461         vxge_device_unregister(hldev);
4462
4463         for (i = 0; i < vdev->no_of_vpath; i++) {
4464                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4465                 vdev->vpaths[i].mcast_addr_cnt = 0;
4466                 vdev->vpaths[i].mac_addr_cnt = 0;
4467         }
4468
4469         kfree(vdev->vpaths);
4470
4471         iounmap(vdev->bar0);
4472
4473         pci_disable_sriov(pdev);
4474
4475         /* we are safe to free it now */
4476         free_netdev(dev);
4477
4478         vxge_debug_init(level_trace,
4479                 "%s:%d  Device unregistered", __func__, __LINE__);
4480
4481         vxge_hw_device_terminate(hldev);
4482
4483         pci_disable_device(pdev);
4484         pci_release_regions(pdev);
4485         pci_set_drvdata(pdev, NULL);
4486         vxge_debug_entryexit(level_trace,
4487                 "%s:%d  Exiting...", __func__, __LINE__);
4488 }
4489
4490 static struct pci_error_handlers vxge_err_handler = {
4491         .error_detected = vxge_io_error_detected,
4492         .slot_reset = vxge_io_slot_reset,
4493         .resume = vxge_io_resume,
4494 };
4495
4496 static struct pci_driver vxge_driver = {
4497         .name = VXGE_DRIVER_NAME,
4498         .id_table = vxge_id_table,
4499         .probe = vxge_probe,
4500         .remove = __devexit_p(vxge_remove),
4501 #ifdef CONFIG_PM
4502         .suspend = vxge_pm_suspend,
4503         .resume = vxge_pm_resume,
4504 #endif
4505         .err_handler = &vxge_err_handler,
4506 };
4507
4508 static int __init
4509 vxge_starter(void)
4510 {
4511         int ret = 0;
4512         char version[32];
4513         snprintf(version, 32, "%s", DRV_VERSION);
4514
4515         printk(KERN_INFO "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4516                 VXGE_DRIVER_NAME);
4517         printk(KERN_INFO "%s: Driver version: %s\n",
4518                         VXGE_DRIVER_NAME, version);
4519
4520         verify_bandwidth();
4521
4522         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4523         if (!driver_config)
4524                 return -ENOMEM;
4525
4526         ret = pci_register_driver(&vxge_driver);
4527
4528         if (driver_config->config_dev_cnt &&
4529            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4530                 vxge_debug_init(VXGE_ERR,
4531                         "%s: Configured %d of %d devices",
4532                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4533                         driver_config->total_dev_cnt);
4534
4535         if (ret)
4536                 kfree(driver_config);
4537
4538         return ret;
4539 }
4540
4541 static void __exit
4542 vxge_closer(void)
4543 {
4544         pci_unregister_driver(&vxge_driver);
4545         kfree(driver_config);
4546 }
4547 module_init(vxge_starter);
4548 module_exit(vxge_closer);