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