SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/vxge/vxge-main.c

   1 /******************************************************************************
   2 * This software may be used and distributed according to the terms of
   3 * the GNU General Public License (GPL), incorporated herein by reference.
   4 * Drivers based on or derived from this code fall under the GPL and must
   5 * retain the authorship, copyright and license notice.  This file is not
   6 * a complete program and may only be used when the entire operating
   7 * system is licensed under the GPL.
   8 * See the file COPYING in this distribution for more information.
   9 *
  10 * vxge-main.c: Driver for Neterion Inc's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2009 Neterion Inc.
  13 *
  14 * The module loadable parameters that are supported by the driver and a brief
  15 * explanation of all the variables:
  16 * vlan_tag_strip:
  17 *       Strip VLAN Tag enable/disable. Instructs the device to remove
  18 *       the VLAN tag from all received tagged frames that are not
  19 *       replicated at the internal L2 switch.
  20 *               0 - Do not strip the VLAN tag.
  21 *               1 - Strip the VLAN tag.
  22 *
  23 * addr_learn_en:
  24 *       Enable learning the mac address of the guest OS interface in
  25 *       a virtualization environment.
  26 *               0 - DISABLE
  27 *               1 - ENABLE
  28 *
  29 * max_config_port:
  30 *       Maximum number of port to be supported.
  31 *               MIN -1 and MAX - 2
  32 *
  33 * max_config_vpath:
  34 *       This configures the maximum no of VPATH configures for each
  35 *       device function.
  36 *               MIN - 1 and MAX - 17
  37 *
  38 * max_config_dev:
  39 *       This configures maximum no of Device function to be enabled.
  40 *               MIN - 1 and MAX - 17
  41 *
  42 ******************************************************************************/
  43
  44 #include <linux/if_vlan.h>
  45 #include <linux/pci.h>
  46 #include <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);
 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 netdev_hw_addr *ha;
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(ha, dev) {
1222                         memcpy(mac_info.macaddr, ha->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 = 0;
1368         int tim_msix_id[4] = {0, 1, 0, 0};
1369         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1370
1371         vxge_hw_vpath_intr_enable(vpath->handle);
1372
1373         if (vdev->config.intr_type == INTA)
1374                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1375         else {
1376                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1377                         alarm_msix_id);
1378
1379                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1380                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1381                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1382
1383                 /* enable the alarm vector */
1384                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1385                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1386                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1387         }
1388 }
1389
1390 /*
1391  * vxge_vpath_intr_disable
1392  * @vdev: pointer to vdev
1393  * @vp_id: vpath for which to disable the interrupts
1394  *
1395  * Disables the interrupts for the vpath
1396 */
1397 void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1398 {
1399         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1400         int msix_id;
1401
1402         vxge_hw_vpath_intr_disable(vpath->handle);
1403
1404         if (vdev->config.intr_type == INTA)
1405                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1406         else {
1407                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1408                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1409                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1410
1411                 /* disable the alarm vector */
1412                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1413                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1414                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1415         }
1416 }
1417
1418 /*
1419  * vxge_reset_vpath
1420  * @vdev: pointer to vdev
1421  * @vp_id: vpath to reset
1422  *
1423  * Resets the vpath
1424 */
1425 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1426 {
1427         enum vxge_hw_status status = VXGE_HW_OK;
1428         int ret = 0;
1429
1430         /* check if device is down already */
1431         if (unlikely(!is_vxge_card_up(vdev)))
1432                 return 0;
1433
1434         /* is device reset already scheduled */
1435         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1436                 return 0;
1437
1438         if (vdev->vpaths[vp_id].handle) {
1439                 if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
1440                                 == VXGE_HW_OK) {
1441                         if (is_vxge_card_up(vdev) &&
1442                                 vxge_hw_vpath_recover_from_reset(
1443                                         vdev->vpaths[vp_id].handle)
1444                                         != VXGE_HW_OK) {
1445                                 vxge_debug_init(VXGE_ERR,
1446                                         "vxge_hw_vpath_recover_from_reset"
1447                                         "failed for vpath:%d", vp_id);
1448                                 return status;
1449                         }
1450                 } else {
1451                         vxge_debug_init(VXGE_ERR,
1452                                 "vxge_hw_vpath_reset failed for"
1453                                 "vpath:%d", vp_id);
1454                                 return status;
1455                 }
1456         } else
1457                 return VXGE_HW_FAIL;
1458
1459         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1460         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1461
1462         /* Enable all broadcast */
1463         vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);
1464
1465         /* Enable the interrupts */
1466         vxge_vpath_intr_enable(vdev, vp_id);
1467
1468         smp_wmb();
1469
1470         /* Enable the flow of traffic through the vpath */
1471         vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);
1472
1473         smp_wmb();
1474         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
1475         vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;
1476
1477         /* Vpath reset done */
1478         clear_bit(vp_id, &vdev->vp_reset);
1479
1480         /* Start the vpath queue */
1481         vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);
1482
1483         return ret;
1484 }
1485
1486 static int do_vxge_reset(struct vxgedev *vdev, int event)
1487 {
1488         enum vxge_hw_status status;
1489         int ret = 0, vp_id, i;
1490
1491         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1492
1493         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1494                 /* check if device is down already */
1495                 if (unlikely(!is_vxge_card_up(vdev)))
1496                         return 0;
1497
1498                 /* is reset already scheduled */
1499                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1500                         return 0;
1501         }
1502
1503         if (event == VXGE_LL_FULL_RESET) {
1504                 /* wait for all the vpath reset to complete */
1505                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1506                         while (test_bit(vp_id, &vdev->vp_reset))
1507                                 msleep(50);
1508                 }
1509
1510                 /* if execution mode is set to debug, don't reset the adapter */
1511                 if (unlikely(vdev->exec_mode)) {
1512                         vxge_debug_init(VXGE_ERR,
1513                                 "%s: execution mode is debug, returning..",
1514                                 vdev->ndev->name);
1515                 clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1516                 vxge_stop_all_tx_queue(vdev);
1517                 return 0;
1518                 }
1519         }
1520
1521         if (event == VXGE_LL_FULL_RESET) {
1522                 vxge_hw_device_intr_disable(vdev->devh);
1523
1524                 switch (vdev->cric_err_event) {
1525                 case VXGE_HW_EVENT_UNKNOWN:
1526                         vxge_stop_all_tx_queue(vdev);
1527                         vxge_debug_init(VXGE_ERR,
1528                                 "fatal: %s: Disabling device due to"
1529                                 "unknown error",
1530                                 vdev->ndev->name);
1531                         ret = -EPERM;
1532                         goto out;
1533                 case VXGE_HW_EVENT_RESET_START:
1534                         break;
1535                 case VXGE_HW_EVENT_RESET_COMPLETE:
1536                 case VXGE_HW_EVENT_LINK_DOWN:
1537                 case VXGE_HW_EVENT_LINK_UP:
1538                 case VXGE_HW_EVENT_ALARM_CLEARED:
1539                 case VXGE_HW_EVENT_ECCERR:
1540                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1541                         ret = -EPERM;
1542                         goto out;
1543                 case VXGE_HW_EVENT_FIFO_ERR:
1544                 case VXGE_HW_EVENT_VPATH_ERR:
1545                         break;
1546                 case VXGE_HW_EVENT_CRITICAL_ERR:
1547                         vxge_stop_all_tx_queue(vdev);
1548                         vxge_debug_init(VXGE_ERR,
1549                                 "fatal: %s: Disabling device due to"
1550                                 "serious error",
1551                                 vdev->ndev->name);
1552                         /* SOP or device reset required */
1553                         /* This event is not currently used */
1554                         ret = -EPERM;
1555                         goto out;
1556                 case VXGE_HW_EVENT_SERR:
1557                         vxge_stop_all_tx_queue(vdev);
1558                         vxge_debug_init(VXGE_ERR,
1559                                 "fatal: %s: Disabling device due to"
1560                                 "serious error",
1561                                 vdev->ndev->name);
1562                         ret = -EPERM;
1563                         goto out;
1564                 case VXGE_HW_EVENT_SRPCIM_SERR:
1565                 case VXGE_HW_EVENT_MRPCIM_SERR:
1566                         ret = -EPERM;
1567                         goto out;
1568                 case VXGE_HW_EVENT_SLOT_FREEZE:
1569                         vxge_stop_all_tx_queue(vdev);
1570                         vxge_debug_init(VXGE_ERR,
1571                                 "fatal: %s: Disabling device due to"
1572                                 "slot freeze",
1573                                 vdev->ndev->name);
1574                         ret = -EPERM;
1575                         goto out;
1576                 default:
1577                         break;
1578
1579                 }
1580         }
1581
1582         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1583                 vxge_stop_all_tx_queue(vdev);
1584
1585         if (event == VXGE_LL_FULL_RESET) {
1586                 status = vxge_reset_all_vpaths(vdev);
1587                 if (status != VXGE_HW_OK) {
1588                         vxge_debug_init(VXGE_ERR,
1589                                 "fatal: %s: can not reset vpaths",
1590                                 vdev->ndev->name);
1591                         ret = -EPERM;
1592                         goto out;
1593                 }
1594         }
1595
1596         if (event == VXGE_LL_COMPL_RESET) {
1597                 for (i = 0; i < vdev->no_of_vpath; i++)
1598                         if (vdev->vpaths[i].handle) {
1599                                 if (vxge_hw_vpath_recover_from_reset(
1600                                         vdev->vpaths[i].handle)
1601                                                 != VXGE_HW_OK) {
1602                                         vxge_debug_init(VXGE_ERR,
1603                                                 "vxge_hw_vpath_recover_"
1604                                                 "from_reset failed for vpath: "
1605                                                 "%d", i);
1606                                         ret = -EPERM;
1607                                         goto out;
1608                                 }
1609                                 } else {
1610                                         vxge_debug_init(VXGE_ERR,
1611                                         "vxge_hw_vpath_reset failed for "
1612                                                 "vpath:%d", i);
1613                                         ret = -EPERM;
1614                                         goto out;
1615                                 }
1616         }
1617
1618         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1619                 /* Reprogram the DA table with populated mac addresses */
1620                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1621                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1622                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1623                 }
1624
1625                 /* enable vpath interrupts */
1626                 for (i = 0; i < vdev->no_of_vpath; i++)
1627                         vxge_vpath_intr_enable(vdev, i);
1628
1629                 vxge_hw_device_intr_enable(vdev->devh);
1630
1631                 smp_wmb();
1632
1633                 /* Indicate card up */
1634                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1635
1636                 /* Get the traffic to flow through the vpaths */
1637                 for (i = 0; i < vdev->no_of_vpath; i++) {
1638                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1639                         smp_wmb();
1640                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1641                 }
1642
1643                 vxge_wake_all_tx_queue(vdev);
1644         }
1645
1646 out:
1647         vxge_debug_entryexit(VXGE_TRACE,
1648                 "%s:%d  Exiting...", __func__, __LINE__);
1649
1650         /* Indicate reset done */
1651         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1652                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1653         return ret;
1654 }
1655
1656 /*
1657  * vxge_reset
1658  * @vdev: pointer to ll device
1659  *
1660  * driver may reset the chip on events of serr, eccerr, etc
1661  */
1662 int vxge_reset(struct vxgedev *vdev)
1663 {
1664         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1665         return 0;
1666 }
1667
1668 /**
1669  * vxge_poll - Receive handler when Receive Polling is used.
1670  * @dev: pointer to the device structure.
1671  * @budget: Number of packets budgeted to be processed in this iteration.
1672  *
1673  * This function comes into picture only if Receive side is being handled
1674  * through polling (called NAPI in linux). It mostly does what the normal
1675  * Rx interrupt handler does in terms of descriptor and packet processing
1676  * but not in an interrupt context. Also it will process a specified number
1677  * of packets at most in one iteration. This value is passed down by the
1678  * kernel as the function argument 'budget'.
1679  */
1680 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1681 {
1682         struct vxge_ring *ring =
1683                 container_of(napi, struct vxge_ring, napi);
1684         int budget_org = budget;
1685         ring->budget = budget;
1686
1687         vxge_hw_vpath_poll_rx(ring->handle);
1688
1689         if (ring->pkts_processed < budget_org) {
1690                 napi_complete(napi);
1691                 /* Re enable the Rx interrupts for the vpath */
1692                 vxge_hw_channel_msix_unmask(
1693                                 (struct __vxge_hw_channel *)ring->handle,
1694                                 ring->rx_vector_no);
1695         }
1696
1697         return ring->pkts_processed;
1698 }
1699
1700 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1701 {
1702         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1703         int pkts_processed = 0;
1704         int i;
1705         int budget_org = budget;
1706         struct vxge_ring *ring;
1707
1708         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1709                 pci_get_drvdata(vdev->pdev);
1710
1711         for (i = 0; i < vdev->no_of_vpath; i++) {
1712                 ring = &vdev->vpaths[i].ring;
1713                 ring->budget = budget;
1714                 vxge_hw_vpath_poll_rx(ring->handle);
1715                 pkts_processed += ring->pkts_processed;
1716                 budget -= ring->pkts_processed;
1717                 if (budget <= 0)
1718                         break;
1719         }
1720
1721         VXGE_COMPLETE_ALL_TX(vdev);
1722
1723         if (pkts_processed < budget_org) {
1724                 napi_complete(napi);
1725                 /* Re enable the Rx interrupts for the ring */
1726                 vxge_hw_device_unmask_all(hldev);
1727                 vxge_hw_device_flush_io(hldev);
1728         }
1729
1730         return pkts_processed;
1731 }
1732
1733 #ifdef CONFIG_NET_POLL_CONTROLLER
1734 /**
1735  * vxge_netpoll - netpoll event handler entry point
1736  * @dev : pointer to the device structure.
1737  * Description:
1738  *      This function will be called by upper layer to check for events on the
1739  * interface in situations where interrupts are disabled. It is used for
1740  * specific in-kernel networking tasks, such as remote consoles and kernel
1741  * debugging over the network (example netdump in RedHat).
1742  */
1743 static void vxge_netpoll(struct net_device *dev)
1744 {
1745         struct __vxge_hw_device  *hldev;
1746         struct vxgedev *vdev;
1747
1748         vdev = (struct vxgedev *)netdev_priv(dev);
1749         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1750
1751         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1752
1753         if (pci_channel_offline(vdev->pdev))
1754                 return;
1755
1756         disable_irq(dev->irq);
1757         vxge_hw_device_clear_tx_rx(hldev);
1758
1759         vxge_hw_device_clear_tx_rx(hldev);
1760         VXGE_COMPLETE_ALL_RX(vdev);
1761         VXGE_COMPLETE_ALL_TX(vdev);
1762
1763         enable_irq(dev->irq);
1764
1765         vxge_debug_entryexit(VXGE_TRACE,
1766                 "%s:%d  Exiting...", __func__, __LINE__);
1767         return;
1768 }
1769 #endif
1770
1771 /* RTH configuration */
1772 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1773 {
1774         enum vxge_hw_status status = VXGE_HW_OK;
1775         struct vxge_hw_rth_hash_types hash_types;
1776         u8 itable[256] = {0}; /* indirection table */
1777         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1778         int index;
1779
1780         /*
1781          * Filling
1782          *      - itable with bucket numbers
1783          *      - mtable with bucket-to-vpath mapping
1784          */
1785         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1786                 itable[index] = index;
1787                 mtable[index] = index % vdev->no_of_vpath;
1788         }
1789
1790         /* Fill RTH hash types */
1791         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1792         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1793         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1794         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1795         hash_types.hash_type_tcpipv6ex_en =
1796                                         vdev->config.rth_hash_type_tcpipv6ex;
1797         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1798
1799         /* set indirection table, bucket-to-vpath mapping */
1800         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1801                                                 vdev->no_of_vpath,
1802                                                 mtable, itable,
1803                                                 vdev->config.rth_bkt_sz);
1804         if (status != VXGE_HW_OK) {
1805                 vxge_debug_init(VXGE_ERR,
1806                         "RTH indirection table configuration failed "
1807                         "for vpath:%d", vdev->vpaths[0].device_id);
1808                 return status;
1809         }
1810
1811         /*
1812         * Because the itable_set() method uses the active_table field
1813         * for the target virtual path the RTH config should be updated
1814         * for all VPATHs. The h/w only uses the lowest numbered VPATH
1815         * when steering frames.
1816         */
1817          for (index = 0; index < vdev->no_of_vpath; index++) {
1818                 status = vxge_hw_vpath_rts_rth_set(
1819                                 vdev->vpaths[index].handle,
1820                                 vdev->config.rth_algorithm,
1821                                 &hash_types,
1822                                 vdev->config.rth_bkt_sz);
1823
1824                  if (status != VXGE_HW_OK) {
1825                         vxge_debug_init(VXGE_ERR,
1826                                 "RTH configuration failed for vpath:%d",
1827                                 vdev->vpaths[index].device_id);
1828                         return status;
1829                  }
1830          }
1831
1832         return status;
1833 }
1834
1835 int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1836 {
1837         struct vxge_mac_addrs *new_mac_entry;
1838         u8 *mac_address = NULL;
1839
1840         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1841                 return TRUE;
1842
1843         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1844         if (!new_mac_entry) {
1845                 vxge_debug_mem(VXGE_ERR,
1846                         "%s: memory allocation failed",
1847                         VXGE_DRIVER_NAME);
1848                 return FALSE;
1849         }
1850
1851         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1852
1853         /* Copy the new mac address to the list */
1854         mac_address = (u8 *)&new_mac_entry->macaddr;
1855         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1856
1857         new_mac_entry->state = mac->state;
1858         vpath->mac_addr_cnt++;
1859
1860         /* Is this a multicast address */
1861         if (0x01 & mac->macaddr[0])
1862                 vpath->mcast_addr_cnt++;
1863
1864         return TRUE;
1865 }
1866
1867 /* Add a mac address to DA table */
1868 enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1869 {
1870         enum vxge_hw_status status = VXGE_HW_OK;
1871         struct vxge_vpath *vpath;
1872         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1873
1874         if (0x01 & mac->macaddr[0]) /* multicast address */
1875                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1876         else
1877                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1878
1879         vpath = &vdev->vpaths[mac->vpath_no];
1880         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1881                                                 mac->macmask, duplicate_mode);
1882         if (status != VXGE_HW_OK) {
1883                 vxge_debug_init(VXGE_ERR,
1884                         "DA config add entry failed for vpath:%d",
1885                         vpath->device_id);
1886         } else
1887                 if (FALSE == vxge_mac_list_add(vpath, mac))
1888                         status = -EPERM;
1889
1890         return status;
1891 }
1892
1893 int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1894 {
1895         struct list_head *entry, *next;
1896         u64 del_mac = 0;
1897         u8 *mac_address = (u8 *) (&del_mac);
1898
1899         /* Copy the mac address to delete from the list */
1900         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1901
1902         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1903                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1904                         list_del(entry);
1905                         kfree((struct vxge_mac_addrs *)entry);
1906                         vpath->mac_addr_cnt--;
1907
1908                         /* Is this a multicast address */
1909                         if (0x01 & mac->macaddr[0])
1910                                 vpath->mcast_addr_cnt--;
1911                         return TRUE;
1912                 }
1913         }
1914
1915         return FALSE;
1916 }
1917 /* delete a mac address from DA table */
1918 enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1919 {
1920         enum vxge_hw_status status = VXGE_HW_OK;
1921         struct vxge_vpath *vpath;
1922
1923         vpath = &vdev->vpaths[mac->vpath_no];
1924         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1925                                                 mac->macmask);
1926         if (status != VXGE_HW_OK) {
1927                 vxge_debug_init(VXGE_ERR,
1928                         "DA config delete entry failed for vpath:%d",
1929                         vpath->device_id);
1930         } else
1931                 vxge_mac_list_del(vpath, mac);
1932         return status;
1933 }
1934
1935 /* list all mac addresses from DA table */
1936 enum vxge_hw_status
1937 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1938                                         struct macInfo *mac)
1939 {
1940         enum vxge_hw_status status = VXGE_HW_OK;
1941         unsigned char macmask[ETH_ALEN];
1942         unsigned char macaddr[ETH_ALEN];
1943
1944         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1945                                 macaddr, macmask);
1946         if (status != VXGE_HW_OK) {
1947                 vxge_debug_init(VXGE_ERR,
1948                         "DA config list entry failed for vpath:%d",
1949                         vpath->device_id);
1950                 return status;
1951         }
1952
1953         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1954
1955                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1956                                 macaddr, macmask);
1957                 if (status != VXGE_HW_OK)
1958                         break;
1959         }
1960
1961         return status;
1962 }
1963
1964 /* Store all vlan ids from the list to the vid table */
1965 enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1966 {
1967         enum vxge_hw_status status = VXGE_HW_OK;
1968         struct vxgedev *vdev = vpath->vdev;
1969         u16 vid;
1970
1971         if (vdev->vlgrp && vpath->is_open) {
1972
1973                 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1974                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1975                                 continue;
1976                         /* Add these vlan to the vid table */
1977                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1978                 }
1979         }
1980
1981         return status;
1982 }
1983
1984 /* Store all mac addresses from the list to the DA table */
1985 enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1986 {
1987         enum vxge_hw_status status = VXGE_HW_OK;
1988         struct macInfo mac_info;
1989         u8 *mac_address = NULL;
1990         struct list_head *entry, *next;
1991
1992         memset(&mac_info, 0, sizeof(struct macInfo));
1993
1994         if (vpath->is_open) {
1995
1996                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1997                         mac_address =
1998                                 (u8 *)&
1999                                 ((struct vxge_mac_addrs *)entry)->macaddr;
2000                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
2001                         ((struct vxge_mac_addrs *)entry)->state =
2002                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
2003                         /* does this mac address already exist in da table? */
2004                         status = vxge_search_mac_addr_in_da_table(vpath,
2005                                 &mac_info);
2006                         if (status != VXGE_HW_OK) {
2007                                 /* Add this mac address to the DA table */
2008                                 status = vxge_hw_vpath_mac_addr_add(
2009                                         vpath->handle, mac_info.macaddr,
2010                                         mac_info.macmask,
2011                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
2012                                 if (status != VXGE_HW_OK) {
2013                                         vxge_debug_init(VXGE_ERR,
2014                                             "DA add entry failed for vpath:%d",
2015                                             vpath->device_id);
2016                                         ((struct vxge_mac_addrs *)entry)->state
2017                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
2018                                 }
2019                         }
2020                 }
2021         }
2022
2023         return status;
2024 }
2025
2026 /* reset vpaths */
2027 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
2028 {
2029         int i;
2030         enum vxge_hw_status status = VXGE_HW_OK;
2031
2032         for (i = 0; i < vdev->no_of_vpath; i++)
2033                 if (vdev->vpaths[i].handle) {
2034                         if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
2035                                         == VXGE_HW_OK) {
2036                                 if (is_vxge_card_up(vdev) &&
2037                                         vxge_hw_vpath_recover_from_reset(
2038                                                 vdev->vpaths[i].handle)
2039                                                 != VXGE_HW_OK) {
2040                                         vxge_debug_init(VXGE_ERR,
2041                                                 "vxge_hw_vpath_recover_"
2042                                                 "from_reset failed for vpath: "
2043                                                 "%d", i);
2044                                         return status;
2045                                 }
2046                         } else {
2047                                 vxge_debug_init(VXGE_ERR,
2048                                         "vxge_hw_vpath_reset failed for "
2049                                         "vpath:%d", i);
2050                                         return status;
2051                         }
2052                 }
2053         return status;
2054 }
2055
2056 /* close vpaths */
2057 void vxge_close_vpaths(struct vxgedev *vdev, int index)
2058 {
2059         int i;
2060         for (i = index; i < vdev->no_of_vpath; i++) {
2061                 if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
2062                         vxge_hw_vpath_close(vdev->vpaths[i].handle);
2063                         vdev->stats.vpaths_open--;
2064                 }
2065                 vdev->vpaths[i].is_open = 0;
2066                 vdev->vpaths[i].handle  = NULL;
2067         }
2068 }
2069
2070 /* open vpaths */
2071 int vxge_open_vpaths(struct vxgedev *vdev)
2072 {
2073         enum vxge_hw_status status;
2074         int i;
2075         u32 vp_id = 0;
2076         struct vxge_hw_vpath_attr attr;
2077
2078         for (i = 0; i < vdev->no_of_vpath; i++) {
2079                 vxge_assert(vdev->vpaths[i].is_configured);
2080                 attr.vp_id = vdev->vpaths[i].device_id;
2081                 attr.fifo_attr.callback = vxge_xmit_compl;
2082                 attr.fifo_attr.txdl_term = vxge_tx_term;
2083                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2084                 attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;
2085
2086                 attr.ring_attr.callback = vxge_rx_1b_compl;
2087                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2088                 attr.ring_attr.rxd_term = vxge_rx_term;
2089                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2090                 attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;
2091
2092                 vdev->vpaths[i].ring.ndev = vdev->ndev;
2093                 vdev->vpaths[i].ring.pdev = vdev->pdev;
2094                 status = vxge_hw_vpath_open(vdev->devh, &attr,
2095                                 &(vdev->vpaths[i].handle));
2096                 if (status == VXGE_HW_OK) {
2097                         vdev->vpaths[i].fifo.handle =
2098                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2099                         vdev->vpaths[i].ring.handle =
2100                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2101                         vdev->vpaths[i].fifo.tx_steering_type =
2102                                 vdev->config.tx_steering_type;
2103                         vdev->vpaths[i].fifo.ndev = vdev->ndev;
2104                         vdev->vpaths[i].fifo.pdev = vdev->pdev;
2105                         vdev->vpaths[i].fifo.indicate_max_pkts =
2106                                 vdev->config.fifo_indicate_max_pkts;
2107                         vdev->vpaths[i].ring.rx_vector_no = 0;
2108                         vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
2109                         vdev->vpaths[i].is_open = 1;
2110                         vdev->vp_handles[i] = vdev->vpaths[i].handle;
2111                         vdev->vpaths[i].ring.gro_enable =
2112                                                 vdev->config.gro_enable;
2113                         vdev->vpaths[i].ring.vlan_tag_strip =
2114                                                 vdev->vlan_tag_strip;
2115                         vdev->stats.vpaths_open++;
2116                 } else {
2117                         vdev->stats.vpath_open_fail++;
2118                         vxge_debug_init(VXGE_ERR,
2119                                 "%s: vpath: %d failed to open "
2120                                 "with status: %d",
2121                             vdev->ndev->name, vdev->vpaths[i].device_id,
2122                                 status);
2123                         vxge_close_vpaths(vdev, 0);
2124                         return -EPERM;
2125                 }
2126
2127                 vp_id =
2128                   ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
2129                   vpath->vp_id;
2130                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2131         }
2132         return VXGE_HW_OK;
2133 }
2134
2135 /*
2136  *  vxge_isr_napi
2137  *  @irq: the irq of the device.
2138  *  @dev_id: a void pointer to the hldev structure of the Titan device
2139  *  @ptregs: pointer to the registers pushed on the stack.
2140  *
2141  *  This function is the ISR handler of the device when napi is enabled. It
2142  *  identifies the reason for the interrupt and calls the relevant service
2143  *  routines.
2144  */
2145 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2146 {
2147         struct net_device *dev;
2148         struct __vxge_hw_device *hldev;
2149         u64 reason;
2150         enum vxge_hw_status status;
2151         struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2152
2153         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2154
2155         dev = vdev->ndev;
2156         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2157
2158         if (pci_channel_offline(vdev->pdev))
2159                 return IRQ_NONE;
2160
2161         if (unlikely(!is_vxge_card_up(vdev)))
2162                 return IRQ_NONE;
2163
2164         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2165                         &reason);
2166         if (status == VXGE_HW_OK) {
2167                 vxge_hw_device_mask_all(hldev);
2168
2169                 if (reason &
2170                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2171                         vdev->vpaths_deployed >>
2172                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2173
2174                         vxge_hw_device_clear_tx_rx(hldev);
2175                         napi_schedule(&vdev->napi);
2176                         vxge_debug_intr(VXGE_TRACE,
2177                                 "%s:%d  Exiting...", __func__, __LINE__);
2178                         return IRQ_HANDLED;
2179                 } else
2180                         vxge_hw_device_unmask_all(hldev);
2181         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2182                 (status == VXGE_HW_ERR_CRITICAL) ||
2183                 (status == VXGE_HW_ERR_FIFO))) {
2184                 vxge_hw_device_mask_all(hldev);
2185                 vxge_hw_device_flush_io(hldev);
2186                 return IRQ_HANDLED;
2187         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2188                 return IRQ_HANDLED;
2189
2190         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2191         return IRQ_NONE;
2192 }
2193
2194 #ifdef CONFIG_PCI_MSI
2195
2196 static irqreturn_t
2197 vxge_tx_msix_handle(int irq, void *dev_id)
2198 {
2199         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2200
2201         VXGE_COMPLETE_VPATH_TX(fifo);
2202
2203         return IRQ_HANDLED;
2204 }
2205
2206 static irqreturn_t
2207 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2208 {
2209         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2210
2211         /* MSIX_IDX for Rx is 1 */
2212         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2213                                         ring->rx_vector_no);
2214
2215         napi_schedule(&ring->napi);
2216         return IRQ_HANDLED;
2217 }
2218
2219 static irqreturn_t
2220 vxge_alarm_msix_handle(int irq, void *dev_id)
2221 {
2222         int i;
2223         enum vxge_hw_status status;
2224         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2225         struct vxgedev *vdev = vpath->vdev;
2226         int msix_id = (vpath->handle->vpath->vp_id *
2227                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2228
2229         for (i = 0; i < vdev->no_of_vpath; i++) {
2230                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2231
2232                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2233                         vdev->exec_mode);
2234                 if (status == VXGE_HW_OK) {
2235
2236                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2237                                         msix_id);
2238                         continue;
2239                 }
2240                 vxge_debug_intr(VXGE_ERR,
2241                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2242                         VXGE_DRIVER_NAME, status);
2243         }
2244         return IRQ_HANDLED;
2245 }
2246
2247 static int vxge_alloc_msix(struct vxgedev *vdev)
2248 {
2249         int j, i, ret = 0;
2250         int msix_intr_vect = 0, temp;
2251         vdev->intr_cnt = 0;
2252
2253 start:
2254         /* Tx/Rx MSIX Vectors count */
2255         vdev->intr_cnt = vdev->no_of_vpath * 2;
2256
2257         /* Alarm MSIX Vectors count */
2258         vdev->intr_cnt++;
2259
2260         vdev->entries = kzalloc(vdev->intr_cnt * sizeof(struct msix_entry),
2261                                                 GFP_KERNEL);
2262         if (!vdev->entries) {
2263                 vxge_debug_init(VXGE_ERR,
2264                         "%s: memory allocation failed",
2265                         VXGE_DRIVER_NAME);
2266                 return  -ENOMEM;
2267         }
2268
2269         vdev->vxge_entries =
2270                 kzalloc(vdev->intr_cnt * sizeof(struct vxge_msix_entry),
2271                                 GFP_KERNEL);
2272         if (!vdev->vxge_entries) {
2273                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2274                         VXGE_DRIVER_NAME);
2275                 kfree(vdev->entries);
2276                 return -ENOMEM;
2277         }
2278
2279         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2280
2281                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2282
2283                 /* Initialize the fifo vector */
2284                 vdev->entries[j].entry = msix_intr_vect;
2285                 vdev->vxge_entries[j].entry = msix_intr_vect;
2286                 vdev->vxge_entries[j].in_use = 0;
2287                 j++;
2288
2289                 /* Initialize the ring vector */
2290                 vdev->entries[j].entry = msix_intr_vect + 1;
2291                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2292                 vdev->vxge_entries[j].in_use = 0;
2293                 j++;
2294         }
2295
2296         /* Initialize the alarm vector */
2297         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2298         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2299         vdev->vxge_entries[j].in_use = 0;
2300
2301         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2302
2303         if (ret > 0) {
2304                 vxge_debug_init(VXGE_ERR,
2305                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2306                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2307                 kfree(vdev->entries);
2308                 kfree(vdev->vxge_entries);
2309                 vdev->entries = NULL;
2310                 vdev->vxge_entries = NULL;
2311
2312                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3))
2313                         return -ENODEV;
2314                 /* Try with less no of vector by reducing no of vpaths count */
2315                 temp = (ret - 1)/2;
2316                 vxge_close_vpaths(vdev, temp);
2317                 vdev->no_of_vpath = temp;
2318                 goto start;
2319         } else if (ret < 0)
2320                 return -ENODEV;
2321
2322         return 0;
2323 }
2324
2325 static int vxge_enable_msix(struct vxgedev *vdev)
2326 {
2327
2328         int i, ret = 0;
2329         /* 0 - Tx, 1 - Rx  */
2330         int tim_msix_id[4] = {0, 1, 0, 0};
2331
2332         vdev->intr_cnt = 0;
2333
2334         /* allocate msix vectors */
2335         ret = vxge_alloc_msix(vdev);
2336         if (!ret) {
2337                 for (i = 0; i < vdev->no_of_vpath; i++) {
2338
2339                         /* If fifo or ring are not enabled
2340                            the MSIX vector for that should be set to 0
2341                            Hence initializeing this array to all 0s.
2342                         */
2343                         vdev->vpaths[i].ring.rx_vector_no =
2344                                 (vdev->vpaths[i].device_id *
2345                                         VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2346
2347                         vxge_hw_vpath_msix_set(vdev->vpaths[i].handle,
2348                                         tim_msix_id, VXGE_ALARM_MSIX_ID);
2349                 }
2350         }
2351
2352         return ret;
2353 }
2354
2355 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2356 {
2357         int intr_cnt;
2358
2359         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2360                 intr_cnt++) {
2361                 if (vdev->vxge_entries[intr_cnt].in_use) {
2362                         synchronize_irq(vdev->entries[intr_cnt].vector);
2363                         free_irq(vdev->entries[intr_cnt].vector,
2364                                 vdev->vxge_entries[intr_cnt].arg);
2365                         vdev->vxge_entries[intr_cnt].in_use = 0;
2366                 }
2367         }
2368
2369         kfree(vdev->entries);
2370         kfree(vdev->vxge_entries);
2371         vdev->entries = NULL;
2372         vdev->vxge_entries = NULL;
2373
2374         if (vdev->config.intr_type == MSI_X)
2375                 pci_disable_msix(vdev->pdev);
2376 }
2377 #endif
2378
2379 static void vxge_rem_isr(struct vxgedev *vdev)
2380 {
2381         struct __vxge_hw_device  *hldev;
2382         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2383
2384 #ifdef CONFIG_PCI_MSI
2385         if (vdev->config.intr_type == MSI_X) {
2386                 vxge_rem_msix_isr(vdev);
2387         } else
2388 #endif
2389         if (vdev->config.intr_type == INTA) {
2390                         synchronize_irq(vdev->pdev->irq);
2391                         free_irq(vdev->pdev->irq, vdev);
2392         }
2393 }
2394
2395 static int vxge_add_isr(struct vxgedev *vdev)
2396 {
2397         int ret = 0;
2398 #ifdef CONFIG_PCI_MSI
2399         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2400         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2401
2402         if (vdev->config.intr_type == MSI_X)
2403                 ret = vxge_enable_msix(vdev);
2404
2405         if (ret) {
2406                 vxge_debug_init(VXGE_ERR,
2407                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2408                 vxge_debug_init(VXGE_ERR,
2409                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2410                 vdev->config.intr_type = INTA;
2411         }
2412
2413         if (vdev->config.intr_type == MSI_X) {
2414                 for (intr_idx = 0;
2415                      intr_idx < (vdev->no_of_vpath *
2416                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2417
2418                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2419                         irq_req = 0;
2420
2421                         switch (msix_idx) {
2422                         case 0:
2423                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2424                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2425                                         vdev->ndev->name,
2426                                         vdev->entries[intr_cnt].entry,
2427                                         pci_fun, vp_idx);
2428                                 ret = request_irq(
2429                                     vdev->entries[intr_cnt].vector,
2430                                         vxge_tx_msix_handle, 0,
2431                                         vdev->desc[intr_cnt],
2432                                         &vdev->vpaths[vp_idx].fifo);
2433                                         vdev->vxge_entries[intr_cnt].arg =
2434                                                 &vdev->vpaths[vp_idx].fifo;
2435                                 irq_req = 1;
2436                                 break;
2437                         case 1:
2438                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2439                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2440                                         vdev->ndev->name,
2441                                         vdev->entries[intr_cnt].entry,
2442                                         pci_fun, vp_idx);
2443                                 ret = request_irq(
2444                                     vdev->entries[intr_cnt].vector,
2445                                         vxge_rx_msix_napi_handle,
2446                                         0,
2447                                         vdev->desc[intr_cnt],
2448                                         &vdev->vpaths[vp_idx].ring);
2449                                         vdev->vxge_entries[intr_cnt].arg =
2450                                                 &vdev->vpaths[vp_idx].ring;
2451                                 irq_req = 1;
2452                                 break;
2453                         }
2454
2455                         if (ret) {
2456                                 vxge_debug_init(VXGE_ERR,
2457                                         "%s: MSIX - %d  Registration failed",
2458                                         vdev->ndev->name, intr_cnt);
2459                                 vxge_rem_msix_isr(vdev);
2460                                 vdev->config.intr_type = INTA;
2461                                 vxge_debug_init(VXGE_ERR,
2462                                         "%s: Defaulting to INTA"
2463                                         , vdev->ndev->name);
2464                                         goto INTA_MODE;
2465                         }
2466
2467                         if (irq_req) {
2468                                 /* We requested for this msix interrupt */
2469                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2470                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2471                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2472                                 vxge_hw_vpath_msix_unmask(
2473                                         vdev->vpaths[vp_idx].handle,
2474                                         msix_idx);
2475                                 intr_cnt++;
2476                         }
2477
2478                         /* Point to next vpath handler */
2479                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2480                             (vp_idx < (vdev->no_of_vpath - 1)))
2481                                 vp_idx++;
2482                 }
2483
2484                 intr_cnt = vdev->no_of_vpath * 2;
2485                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2486                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2487                         vdev->ndev->name,
2488                         vdev->entries[intr_cnt].entry,
2489                         pci_fun);
2490                 /* For Alarm interrupts */
2491                 ret = request_irq(vdev->entries[intr_cnt].vector,
2492                                         vxge_alarm_msix_handle, 0,
2493                                         vdev->desc[intr_cnt],
2494                                         &vdev->vpaths[0]);
2495                 if (ret) {
2496                         vxge_debug_init(VXGE_ERR,
2497                                 "%s: MSIX - %d Registration failed",
2498                                 vdev->ndev->name, intr_cnt);
2499                         vxge_rem_msix_isr(vdev);
2500                         vdev->config.intr_type = INTA;
2501                         vxge_debug_init(VXGE_ERR,
2502                                 "%s: Defaulting to INTA",
2503                                 vdev->ndev->name);
2504                                 goto INTA_MODE;
2505                 }
2506
2507                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2508                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2509                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2510                                         msix_idx);
2511                 vdev->vxge_entries[intr_cnt].in_use = 1;
2512                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2513         }
2514 INTA_MODE:
2515 #endif
2516
2517         if (vdev->config.intr_type == INTA) {
2518                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2519                         "%s:vxge:INTA", vdev->ndev->name);
2520                 vxge_hw_device_set_intr_type(vdev->devh,
2521                         VXGE_HW_INTR_MODE_IRQLINE);
2522                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2523                         vdev->vpaths[0].device_id);
2524                 ret = request_irq((int) vdev->pdev->irq,
2525                         vxge_isr_napi,
2526                         IRQF_SHARED, vdev->desc[0], vdev);
2527                 if (ret) {
2528                         vxge_debug_init(VXGE_ERR,
2529                                 "%s %s-%d: ISR registration failed",
2530                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2531                         return -ENODEV;
2532                 }
2533                 vxge_debug_init(VXGE_TRACE,
2534                         "new %s-%d line allocated",
2535                         "IRQ", vdev->pdev->irq);
2536         }
2537
2538         return VXGE_HW_OK;
2539 }
2540
2541 static void vxge_poll_vp_reset(unsigned long data)
2542 {
2543         struct vxgedev *vdev = (struct vxgedev *)data;
2544         int i, j = 0;
2545
2546         for (i = 0; i < vdev->no_of_vpath; i++) {
2547                 if (test_bit(i, &vdev->vp_reset)) {
2548                         vxge_reset_vpath(vdev, i);
2549                         j++;
2550                 }
2551         }
2552         if (j && (vdev->config.intr_type != MSI_X)) {
2553                 vxge_hw_device_unmask_all(vdev->devh);
2554                 vxge_hw_device_flush_io(vdev->devh);
2555         }
2556
2557         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2558 }
2559
2560 static void vxge_poll_vp_lockup(unsigned long data)
2561 {
2562         struct vxgedev *vdev = (struct vxgedev *)data;
2563         int i;
2564         struct vxge_ring *ring;
2565         enum vxge_hw_status status = VXGE_HW_OK;
2566
2567         for (i = 0; i < vdev->no_of_vpath; i++) {
2568                 ring = &vdev->vpaths[i].ring;
2569                 /* Did this vpath received any packets */
2570                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2571                         status = vxge_hw_vpath_check_leak(ring->handle);
2572
2573                         /* Did it received any packets last time */
2574                         if ((VXGE_HW_FAIL == status) &&
2575                                 (VXGE_HW_FAIL == ring->last_status)) {
2576
2577                                 /* schedule vpath reset */
2578                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2579
2580                                         /* disable interrupts for this vpath */
2581                                         vxge_vpath_intr_disable(vdev, i);
2582
2583                                         /* stop the queue for this vpath */
2584                                         vxge_stop_tx_queue(&vdev->vpaths[i].
2585                                                                 fifo);
2586                                         continue;
2587                                 }
2588                         }
2589                 }
2590                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2591                 ring->last_status = status;
2592         }
2593
2594         /* Check every 1 milli second */
2595         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2596 }
2597
2598 /**
2599  * vxge_open
2600  * @dev: pointer to the device structure.
2601  *
2602  * This function is the open entry point of the driver. It mainly calls a
2603  * function to allocate Rx buffers and inserts them into the buffer
2604  * descriptors and then enables the Rx part of the NIC.
2605  * Return value: '0' on success and an appropriate (-)ve integer as
2606  * defined in errno.h file on failure.
2607  */
2608 int
2609 vxge_open(struct net_device *dev)
2610 {
2611         enum vxge_hw_status status;
2612         struct vxgedev *vdev;
2613         struct __vxge_hw_device *hldev;
2614         int ret = 0;
2615         int i;
2616         u64 val64, function_mode;
2617         vxge_debug_entryexit(VXGE_TRACE,
2618                 "%s: %s:%d", dev->name, __func__, __LINE__);
2619
2620         vdev = (struct vxgedev *)netdev_priv(dev);
2621         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2622         function_mode = vdev->config.device_hw_info.function_mode;
2623
2624         /* make sure you have link off by default every time Nic is
2625          * initialized */
2626         netif_carrier_off(dev);
2627
2628         /* Open VPATHs */
2629         status = vxge_open_vpaths(vdev);
2630         if (status != VXGE_HW_OK) {
2631                 vxge_debug_init(VXGE_ERR,
2632                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2633                 ret = -EPERM;
2634                 goto out0;
2635         }
2636
2637         vdev->mtu = dev->mtu;
2638
2639         status = vxge_add_isr(vdev);
2640         if (status != VXGE_HW_OK) {
2641                 vxge_debug_init(VXGE_ERR,
2642                         "%s: fatal: ISR add failed", dev->name);
2643                 ret = -EPERM;
2644                 goto out1;
2645         }
2646
2647
2648         if (vdev->config.intr_type != MSI_X) {
2649                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2650                         vdev->config.napi_weight);
2651                 napi_enable(&vdev->napi);
2652                 for (i = 0; i < vdev->no_of_vpath; i++)
2653                         vdev->vpaths[i].ring.napi_p = &vdev->napi;
2654         } else {
2655                 for (i = 0; i < vdev->no_of_vpath; i++) {
2656                         netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
2657                             vxge_poll_msix, vdev->config.napi_weight);
2658                         napi_enable(&vdev->vpaths[i].ring.napi);
2659                         vdev->vpaths[i].ring.napi_p =
2660                                 &vdev->vpaths[i].ring.napi;
2661                 }
2662         }
2663
2664         /* configure RTH */
2665         if (vdev->config.rth_steering) {
2666                 status = vxge_rth_configure(vdev);
2667                 if (status != VXGE_HW_OK) {
2668                         vxge_debug_init(VXGE_ERR,
2669                                 "%s: fatal: RTH configuration failed",
2670                                 dev->name);
2671                         ret = -EPERM;
2672                         goto out2;
2673                 }
2674         }
2675
2676         for (i = 0; i < vdev->no_of_vpath; i++) {
2677                 /* set initial mtu before enabling the device */
2678                 status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
2679                                                 vdev->mtu);
2680                 if (status != VXGE_HW_OK) {
2681                         vxge_debug_init(VXGE_ERR,
2682                                 "%s: fatal: can not set new MTU", dev->name);
2683                         ret = -EPERM;
2684                         goto out2;
2685                 }
2686         }
2687
2688         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2689         vxge_debug_init(vdev->level_trace,
2690                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2691         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2692
2693         /* Reprogram the DA table with populated mac addresses */
2694         for (i = 0; i < vdev->no_of_vpath; i++) {
2695                 vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
2696                 vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
2697         }
2698
2699         /* Enable vpath to sniff all unicast/multicast traffic that not
2700          * addressed to them. We allow promiscous mode for PF only
2701          */
2702
2703         val64 = 0;
2704         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2705                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2706
2707         vxge_hw_mgmt_reg_write(vdev->devh,
2708                 vxge_hw_mgmt_reg_type_mrpcim,
2709                 0,
2710                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2711                         rxmac_authorize_all_addr),
2712                 val64);
2713
2714         vxge_hw_mgmt_reg_write(vdev->devh,
2715                 vxge_hw_mgmt_reg_type_mrpcim,
2716                 0,
2717                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2718                         rxmac_authorize_all_vid),
2719                 val64);
2720
2721         vxge_set_multicast(dev);
2722
2723         /* Enabling Bcast and mcast for all vpath */
2724         for (i = 0; i < vdev->no_of_vpath; i++) {
2725                 status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
2726                 if (status != VXGE_HW_OK)
2727                         vxge_debug_init(VXGE_ERR,
2728                                 "%s : Can not enable bcast for vpath "
2729                                 "id %d", dev->name, i);
2730                 if (vdev->config.addr_learn_en) {
2731                         status =
2732                             vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
2733                         if (status != VXGE_HW_OK)
2734                                 vxge_debug_init(VXGE_ERR,
2735                                         "%s : Can not enable mcast for vpath "
2736                                         "id %d", dev->name, i);
2737                 }
2738         }
2739
2740         vxge_hw_device_setpause_data(vdev->devh, 0,
2741                 vdev->config.tx_pause_enable,
2742                 vdev->config.rx_pause_enable);
2743
2744         if (vdev->vp_reset_timer.function == NULL)
2745                 vxge_os_timer(vdev->vp_reset_timer,
2746                         vxge_poll_vp_reset, vdev, (HZ/2));
2747
2748         if (vdev->vp_lockup_timer.function == NULL)
2749                 vxge_os_timer(vdev->vp_lockup_timer,
2750                         vxge_poll_vp_lockup, vdev, (HZ/2));
2751
2752         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2753
2754         smp_wmb();
2755
2756         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2757                 netif_carrier_on(vdev->ndev);
2758                 printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
2759                 vdev->stats.link_up++;
2760         }
2761
2762         vxge_hw_device_intr_enable(vdev->devh);
2763
2764         smp_wmb();
2765
2766         for (i = 0; i < vdev->no_of_vpath; i++) {
2767                 vxge_hw_vpath_enable(vdev->vpaths[i].handle);
2768                 smp_wmb();
2769                 vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
2770         }
2771
2772         vxge_start_all_tx_queue(vdev);
2773         goto out0;
2774
2775 out2:
2776         vxge_rem_isr(vdev);
2777
2778         /* Disable napi */
2779         if (vdev->config.intr_type != MSI_X)
2780                 napi_disable(&vdev->napi);
2781         else {
2782                 for (i = 0; i < vdev->no_of_vpath; i++)
2783                         napi_disable(&vdev->vpaths[i].ring.napi);
2784         }
2785
2786 out1:
2787         vxge_close_vpaths(vdev, 0);
2788 out0:
2789         vxge_debug_entryexit(VXGE_TRACE,
2790                                 "%s: %s:%d  Exiting...",
2791                                 dev->name, __func__, __LINE__);
2792         return ret;
2793 }
2794
2795 /* Loop throught the mac address list and delete all the entries */
2796 void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2797 {
2798
2799         struct list_head *entry, *next;
2800         if (list_empty(&vpath->mac_addr_list))
2801                 return;
2802
2803         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2804                 list_del(entry);
2805                 kfree((struct vxge_mac_addrs *)entry);
2806         }
2807 }
2808
2809 static void vxge_napi_del_all(struct vxgedev *vdev)
2810 {
2811         int i;
2812         if (vdev->config.intr_type != MSI_X)
2813                 netif_napi_del(&vdev->napi);
2814         else {
2815                 for (i = 0; i < vdev->no_of_vpath; i++)
2816                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2817         }
2818         return;
2819 }
2820
2821 int do_vxge_close(struct net_device *dev, int do_io)
2822 {
2823         enum vxge_hw_status status;
2824         struct vxgedev *vdev;
2825         struct __vxge_hw_device *hldev;
2826         int i;
2827         u64 val64, vpath_vector;
2828         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2829                 dev->name, __func__, __LINE__);
2830
2831         vdev = (struct vxgedev *)netdev_priv(dev);
2832         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2833
2834         if (unlikely(!is_vxge_card_up(vdev)))
2835                 return 0;
2836
2837         /* If vxge_handle_crit_err task is executing,
2838          * wait till it completes. */
2839         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2840                 msleep(50);
2841
2842         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2843         if (do_io) {
2844                 /* Put the vpath back in normal mode */
2845                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2846                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2847                                 vxge_hw_mgmt_reg_type_mrpcim,
2848                                 0,
2849                                 (ulong)offsetof(
2850                                         struct vxge_hw_mrpcim_reg,
2851                                         rts_mgr_cbasin_cfg),
2852                                 &val64);
2853
2854                 if (status == VXGE_HW_OK) {
2855                         val64 &= ~vpath_vector;
2856                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2857                                         vxge_hw_mgmt_reg_type_mrpcim,
2858                                         0,
2859                                         (ulong)offsetof(
2860                                                 struct vxge_hw_mrpcim_reg,
2861                                                 rts_mgr_cbasin_cfg),
2862                                         val64);
2863                 }
2864
2865                 /* Remove the function 0 from promiscous mode */
2866                 vxge_hw_mgmt_reg_write(vdev->devh,
2867                         vxge_hw_mgmt_reg_type_mrpcim,
2868                         0,
2869                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2870                                 rxmac_authorize_all_addr),
2871                         0);
2872
2873                 vxge_hw_mgmt_reg_write(vdev->devh,
2874                         vxge_hw_mgmt_reg_type_mrpcim,
2875                         0,
2876                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2877                                 rxmac_authorize_all_vid),
2878                         0);
2879
2880                 smp_wmb();
2881         }
2882         del_timer_sync(&vdev->vp_lockup_timer);
2883
2884         del_timer_sync(&vdev->vp_reset_timer);
2885
2886         /* Disable napi */
2887         if (vdev->config.intr_type != MSI_X)
2888                 napi_disable(&vdev->napi);
2889         else {
2890                 for (i = 0; i < vdev->no_of_vpath; i++)
2891                         napi_disable(&vdev->vpaths[i].ring.napi);
2892         }
2893
2894         netif_carrier_off(vdev->ndev);
2895         printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
2896         vxge_stop_all_tx_queue(vdev);
2897
2898         /* Note that at this point xmit() is stopped by upper layer */
2899         if (do_io)
2900                 vxge_hw_device_intr_disable(vdev->devh);
2901
2902         mdelay(1000);
2903
2904         vxge_rem_isr(vdev);
2905
2906         vxge_napi_del_all(vdev);
2907
2908         if (do_io)
2909                 vxge_reset_all_vpaths(vdev);
2910
2911         vxge_close_vpaths(vdev, 0);
2912
2913         vxge_debug_entryexit(VXGE_TRACE,
2914                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2915
2916         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2917
2918         return 0;
2919 }
2920
2921 /**
2922  * vxge_close
2923  * @dev: device pointer.
2924  *
2925  * This is the stop entry point of the driver. It needs to undo exactly
2926  * whatever was done by the open entry point, thus it's usually referred to
2927  * as the close function.Among other things this function mainly stops the
2928  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2929  * Return value: '0' on success and an appropriate (-)ve integer as
2930  * defined in errno.h file on failure.
2931  */
2932 int
2933 vxge_close(struct net_device *dev)
2934 {
2935         do_vxge_close(dev, 1);
2936         return 0;
2937 }
2938
2939 /**
2940  * vxge_change_mtu
2941  * @dev: net device pointer.
2942  * @new_mtu :the new MTU size for the device.
2943  *
2944  * A driver entry point to change MTU size for the device. Before changing
2945  * the MTU the device must be stopped.
2946  */
2947 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2948 {
2949         struct vxgedev *vdev = netdev_priv(dev);
2950
2951         vxge_debug_entryexit(vdev->level_trace,
2952                 "%s:%d", __func__, __LINE__);
2953         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2954                 vxge_debug_init(vdev->level_err,
2955                         "%s: mtu size is invalid", dev->name);
2956                 return -EPERM;
2957         }
2958
2959         /* check if device is down already */
2960         if (unlikely(!is_vxge_card_up(vdev))) {
2961                 /* just store new value, will use later on open() */
2962                 dev->mtu = new_mtu;
2963                 vxge_debug_init(vdev->level_err,
2964                         "%s", "device is down on MTU change");
2965                 return 0;
2966         }
2967
2968         vxge_debug_init(vdev->level_trace,
2969                 "trying to apply new MTU %d", new_mtu);
2970
2971         if (vxge_close(dev))
2972                 return -EIO;
2973
2974         dev->mtu = new_mtu;
2975         vdev->mtu = new_mtu;
2976
2977         if (vxge_open(dev))
2978                 return -EIO;
2979
2980         vxge_debug_init(vdev->level_trace,
2981                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2982
2983         vxge_debug_entryexit(vdev->level_trace,
2984                 "%s:%d  Exiting...", __func__, __LINE__);
2985
2986         return 0;
2987 }
2988
2989 /**
2990  * vxge_get_stats
2991  * @dev: pointer to the device structure
2992  *
2993  * Updates the device statistics structure. This function updates the device
2994  * statistics structure in the net_device structure and returns a pointer
2995  * to the same.
2996  */
2997 static struct net_device_stats *
2998 vxge_get_stats(struct net_device *dev)
2999 {
3000         struct vxgedev *vdev;
3001         struct net_device_stats *net_stats;
3002         int k;
3003
3004         vdev = netdev_priv(dev);
3005
3006         net_stats = &vdev->stats.net_stats;
3007
3008         memset(net_stats, 0, sizeof(struct net_device_stats));
3009
3010         for (k = 0; k < vdev->no_of_vpath; k++) {
3011                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
3012                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
3013                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
3014                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
3015                 net_stats->rx_dropped +=
3016                         vdev->vpaths[k].ring.stats.rx_dropped;
3017
3018                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
3019                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
3020                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
3021         }
3022
3023         return net_stats;
3024 }
3025
3026 /**
3027  * vxge_ioctl
3028  * @dev: Device pointer.
3029  * @ifr: An IOCTL specific structure, that can contain a pointer to
3030  *       a proprietary structure used to pass information to the driver.
3031  * @cmd: This is used to distinguish between the different commands that
3032  *       can be passed to the IOCTL functions.
3033  *
3034  * Entry point for the Ioctl.
3035  */
3036 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3037 {
3038         return -EOPNOTSUPP;
3039 }
3040
3041 /**
3042  * vxge_tx_watchdog
3043  * @dev: pointer to net device structure
3044  *
3045  * Watchdog for transmit side.
3046  * This function is triggered if the Tx Queue is stopped
3047  * for a pre-defined amount of time when the Interface is still up.
3048  */
3049 static void
3050 vxge_tx_watchdog(struct net_device *dev)
3051 {
3052         struct vxgedev *vdev;
3053
3054         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3055
3056         vdev = (struct vxgedev *)netdev_priv(dev);
3057
3058         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3059
3060         vxge_reset(vdev);
3061         vxge_debug_entryexit(VXGE_TRACE,
3062                 "%s:%d  Exiting...", __func__, __LINE__);
3063 }
3064
3065 /**
3066  * vxge_vlan_rx_register
3067  * @dev: net device pointer.
3068  * @grp: vlan group
3069  *
3070  * Vlan group registration
3071  */
3072 static void
3073 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3074 {
3075         struct vxgedev *vdev;
3076         struct vxge_vpath *vpath;
3077         int vp;
3078         u64 vid;
3079         enum vxge_hw_status status;
3080         int i;
3081
3082         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3083
3084         vdev = (struct vxgedev *)netdev_priv(dev);
3085
3086         vpath = &vdev->vpaths[0];
3087         if ((NULL == grp) && (vpath->is_open)) {
3088                 /* Get the first vlan */
3089                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3090
3091                 while (status == VXGE_HW_OK) {
3092
3093                         /* Delete this vlan from the vid table */
3094                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3095                                 vpath = &vdev->vpaths[vp];
3096                                 if (!vpath->is_open)
3097                                         continue;
3098
3099                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3100                         }
3101
3102                         /* Get the next vlan to be deleted */
3103                         vpath = &vdev->vpaths[0];
3104                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3105                 }
3106         }
3107
3108         vdev->vlgrp = grp;
3109
3110         for (i = 0; i < vdev->no_of_vpath; i++) {
3111                 if (vdev->vpaths[i].is_configured)
3112                         vdev->vpaths[i].ring.vlgrp = grp;
3113         }
3114
3115         vxge_debug_entryexit(VXGE_TRACE,
3116                 "%s:%d  Exiting...", __func__, __LINE__);
3117 }
3118
3119 /**
3120  * vxge_vlan_rx_add_vid
3121  * @dev: net device pointer.
3122  * @vid: vid
3123  *
3124  * Add the vlan id to the devices vlan id table
3125  */
3126 static void
3127 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3128 {
3129         struct vxgedev *vdev;
3130         struct vxge_vpath *vpath;
3131         int vp_id;
3132
3133         vdev = (struct vxgedev *)netdev_priv(dev);
3134
3135         /* Add these vlan to the vid table */
3136         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3137                 vpath = &vdev->vpaths[vp_id];
3138                 if (!vpath->is_open)
3139                         continue;
3140                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3141         }
3142 }
3143
3144 /**
3145  * vxge_vlan_rx_add_vid
3146  * @dev: net device pointer.
3147  * @vid: vid
3148  *
3149  * Remove the vlan id from the device's vlan id table
3150  */
3151 static void
3152 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3153 {
3154         struct vxgedev *vdev;
3155         struct vxge_vpath *vpath;
3156         int vp_id;
3157
3158         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3159
3160         vdev = (struct vxgedev *)netdev_priv(dev);
3161
3162         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3163
3164         /* Delete this vlan from 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_delete(vpath->handle, vid);
3170         }
3171         vxge_debug_entryexit(VXGE_TRACE,
3172                 "%s:%d  Exiting...", __func__, __LINE__);
3173 }
3174
3175 static const struct net_device_ops vxge_netdev_ops = {
3176         .ndo_open               = vxge_open,
3177         .ndo_stop               = vxge_close,
3178         .ndo_get_stats          = vxge_get_stats,
3179         .ndo_start_xmit         = vxge_xmit,
3180         .ndo_validate_addr      = eth_validate_addr,
3181         .ndo_set_multicast_list = vxge_set_multicast,
3182
3183         .ndo_do_ioctl           = vxge_ioctl,
3184
3185         .ndo_set_mac_address    = vxge_set_mac_addr,
3186         .ndo_change_mtu         = vxge_change_mtu,
3187         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3188         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3189         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3190
3191         .ndo_tx_timeout         = vxge_tx_watchdog,
3192 #ifdef CONFIG_NET_POLL_CONTROLLER
3193         .ndo_poll_controller    = vxge_netpoll,
3194 #endif
3195 };
3196
3197 int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3198                                    struct vxge_config *config,
3199                                    int high_dma, int no_of_vpath,
3200                                    struct vxgedev **vdev_out)
3201 {
3202         struct net_device *ndev;
3203         enum vxge_hw_status status = VXGE_HW_OK;
3204         struct vxgedev *vdev;
3205         int i, ret = 0, no_of_queue = 1;
3206         u64 stat;
3207
3208         *vdev_out = NULL;
3209         if (config->tx_steering_type == TX_MULTIQ_STEERING)
3210                 no_of_queue = no_of_vpath;
3211
3212         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3213                         no_of_queue);
3214         if (ndev == NULL) {
3215                 vxge_debug_init(
3216                         vxge_hw_device_trace_level_get(hldev),
3217                 "%s : device allocation failed", __func__);
3218                 ret = -ENODEV;
3219                 goto _out0;
3220         }
3221
3222         vxge_debug_entryexit(
3223                 vxge_hw_device_trace_level_get(hldev),
3224                 "%s: %s:%d  Entering...",
3225                 ndev->name, __func__, __LINE__);
3226
3227         vdev = netdev_priv(ndev);
3228         memset(vdev, 0, sizeof(struct vxgedev));
3229
3230         vdev->ndev = ndev;
3231         vdev->devh = hldev;
3232         vdev->pdev = hldev->pdev;
3233         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3234         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3235
3236         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3237
3238         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3239                                 NETIF_F_HW_VLAN_FILTER;
3240         /*  Driver entry points */
3241         ndev->irq = vdev->pdev->irq;
3242         ndev->base_addr = (unsigned long) hldev->bar0;
3243
3244         ndev->netdev_ops = &vxge_netdev_ops;
3245
3246         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3247
3248         initialize_ethtool_ops(ndev);
3249
3250         /* Allocate memory for vpath */
3251         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3252                                 no_of_vpath, GFP_KERNEL);
3253         if (!vdev->vpaths) {
3254                 vxge_debug_init(VXGE_ERR,
3255                         "%s: vpath memory allocation failed",
3256                         vdev->ndev->name);
3257                 ret = -ENODEV;
3258                 goto _out1;
3259         }
3260
3261         ndev->features |= NETIF_F_SG;
3262
3263         ndev->features |= NETIF_F_HW_CSUM;
3264         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3265                 "%s : checksuming enabled", __func__);
3266
3267         if (high_dma) {
3268                 ndev->features |= NETIF_F_HIGHDMA;
3269                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3270                         "%s : using High DMA", __func__);
3271         }
3272
3273         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3274
3275         if (vdev->config.gro_enable)
3276                 ndev->features |= NETIF_F_GRO;
3277
3278         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
3279                 ndev->real_num_tx_queues = no_of_vpath;
3280
3281 #ifdef NETIF_F_LLTX
3282         ndev->features |= NETIF_F_LLTX;
3283 #endif
3284
3285         for (i = 0; i < no_of_vpath; i++)
3286                 spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);
3287
3288         if (register_netdev(ndev)) {
3289                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3290                         "%s: %s : device registration failed!",
3291                         ndev->name, __func__);
3292                 ret = -ENODEV;
3293                 goto _out2;
3294         }
3295
3296         /*  Set the factory defined MAC address initially */
3297         ndev->addr_len = ETH_ALEN;
3298
3299         /* Make Link state as off at this point, when the Link change
3300          * interrupt comes the state will be automatically changed to
3301          * the right state.
3302          */
3303         netif_carrier_off(ndev);
3304
3305         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3306                 "%s: Ethernet device registered",
3307                 ndev->name);
3308
3309         *vdev_out = vdev;
3310
3311         /* Resetting the Device stats */
3312         status = vxge_hw_mrpcim_stats_access(
3313                                 hldev,
3314                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3315                                 0,
3316                                 0,
3317                                 &stat);
3318
3319         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3320                 vxge_debug_init(
3321                         vxge_hw_device_trace_level_get(hldev),
3322                         "%s: device stats clear returns"
3323                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3324
3325         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3326                 "%s: %s:%d  Exiting...",
3327                 ndev->name, __func__, __LINE__);
3328
3329         return ret;
3330 _out2:
3331         kfree(vdev->vpaths);
3332 _out1:
3333         free_netdev(ndev);
3334 _out0:
3335         return ret;
3336 }
3337
3338 /*
3339  * vxge_device_unregister
3340  *
3341  * This function will unregister and free network device
3342  */
3343 void
3344 vxge_device_unregister(struct __vxge_hw_device *hldev)
3345 {
3346         struct vxgedev *vdev;
3347         struct net_device *dev;
3348         char buf[IFNAMSIZ];
3349 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3350         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3351         u32 level_trace;
3352 #endif
3353
3354         dev = hldev->ndev;
3355         vdev = netdev_priv(dev);
3356 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3357         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3358         level_trace = vdev->level_trace;
3359 #endif
3360         vxge_debug_entryexit(level_trace,
3361                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3362
3363         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3364
3365         /* in 2.6 will call stop() if device is up */
3366         unregister_netdev(dev);
3367
3368         flush_scheduled_work();
3369
3370         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3371         vxge_debug_entryexit(level_trace,
3372                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3373 }
3374
3375 /*
3376  * vxge_callback_crit_err
3377  *
3378  * This function is called by the alarm handler in interrupt context.
3379  * Driver must analyze it based on the event type.
3380  */
3381 static void
3382 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3383                         enum vxge_hw_event type, u64 vp_id)
3384 {
3385         struct net_device *dev = hldev->ndev;
3386         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3387         int vpath_idx;
3388
3389         vxge_debug_entryexit(vdev->level_trace,
3390                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3391
3392         /* Note: This event type should be used for device wide
3393          * indications only - Serious errors, Slot freeze and critical errors
3394          */
3395         vdev->cric_err_event = type;
3396
3397         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
3398                 if (vdev->vpaths[vpath_idx].device_id == vp_id)
3399                         break;
3400
3401         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3402                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3403                         vxge_debug_init(VXGE_ERR,
3404                                 "%s: Slot is frozen", vdev->ndev->name);
3405                 } else if (type == VXGE_HW_EVENT_SERR) {
3406                         vxge_debug_init(VXGE_ERR,
3407                                 "%s: Encountered Serious Error",
3408                                 vdev->ndev->name);
3409                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3410                         vxge_debug_init(VXGE_ERR,
3411                                 "%s: Encountered Critical Error",
3412                                 vdev->ndev->name);
3413         }
3414
3415         if ((type == VXGE_HW_EVENT_SERR) ||
3416                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3417                 if (unlikely(vdev->exec_mode))
3418                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3419         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3420                 vxge_hw_device_mask_all(hldev);
3421                 if (unlikely(vdev->exec_mode))
3422                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3423         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3424                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3425
3426                 if (unlikely(vdev->exec_mode))
3427                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3428                 else {
3429                         /* check if this vpath is already set for reset */
3430                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3431
3432                                 /* disable interrupts for this vpath */
3433                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3434
3435                                 /* stop the queue for this vpath */
3436                                 vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
3437                                                         fifo);
3438                         }
3439                 }
3440         }
3441
3442         vxge_debug_entryexit(vdev->level_trace,
3443                 "%s: %s:%d  Exiting...",
3444                 vdev->ndev->name, __func__, __LINE__);
3445 }
3446
3447 static void verify_bandwidth(void)
3448 {
3449         int i, band_width, total = 0, equal_priority = 0;
3450
3451         /* 1. If user enters 0 for some fifo, give equal priority to all */
3452         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3453                 if (bw_percentage[i] == 0) {
3454                         equal_priority = 1;
3455                         break;
3456                 }
3457         }
3458
3459         if (!equal_priority) {
3460                 /* 2. If sum exceeds 100, give equal priority to all */
3461                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3462                         if (bw_percentage[i] == 0xFF)
3463                                 break;
3464
3465                         total += bw_percentage[i];
3466                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3467                                 equal_priority = 1;
3468                                 break;
3469                         }
3470                 }
3471         }
3472
3473         if (!equal_priority) {
3474                 /* Is all the bandwidth consumed? */
3475                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3476                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3477                                 /* Split rest of bw equally among next VPs*/
3478                                 band_width =
3479                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3480                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3481                                 if (band_width < 2) /* min of 2% */
3482                                         equal_priority = 1;
3483                                 else {
3484                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3485                                                 i++)
3486                                                 bw_percentage[i] =
3487                                                         band_width;
3488                                 }
3489                         }
3490                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3491                         equal_priority = 1;
3492         }
3493
3494         if (equal_priority) {
3495                 vxge_debug_init(VXGE_ERR,
3496                         "%s: Assigning equal bandwidth to all the vpaths",
3497                         VXGE_DRIVER_NAME);
3498                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3499                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3500                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3501                         bw_percentage[i] = bw_percentage[0];
3502         }
3503
3504         return;
3505 }
3506
3507 /*
3508  * Vpath configuration
3509  */
3510 static int __devinit vxge_config_vpaths(
3511                         struct vxge_hw_device_config *device_config,
3512                         u64 vpath_mask, struct vxge_config *config_param)
3513 {
3514         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3515         u32 txdl_size, txdl_per_memblock;
3516
3517         temp = driver_config->vpath_per_dev;
3518         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3519                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3520                 /* No more CPU. Return vpath number as zero.*/
3521                 if (driver_config->g_no_cpus == -1)
3522                         return 0;
3523
3524                 if (!driver_config->g_no_cpus)
3525                         driver_config->g_no_cpus = num_online_cpus();
3526
3527                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3528                 if (!driver_config->vpath_per_dev)
3529                         driver_config->vpath_per_dev = 1;
3530
3531                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3532                         if (!vxge_bVALn(vpath_mask, i, 1))
3533                                 continue;
3534                         else
3535                                 default_no_vpath++;
3536                 if (default_no_vpath < driver_config->vpath_per_dev)
3537                         driver_config->vpath_per_dev = default_no_vpath;
3538
3539                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3540                                 (driver_config->vpath_per_dev * 2);
3541                 if (driver_config->g_no_cpus <= 0)
3542                         driver_config->g_no_cpus = -1;
3543         }
3544
3545         if (driver_config->vpath_per_dev == 1) {
3546                 vxge_debug_ll_config(VXGE_TRACE,
3547                         "%s: Disable tx and rx steering, "
3548                         "as single vpath is configured", VXGE_DRIVER_NAME);
3549                 config_param->rth_steering = NO_STEERING;
3550                 config_param->tx_steering_type = NO_STEERING;
3551                 device_config->rth_en = 0;
3552         }
3553
3554         /* configure bandwidth */
3555         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3556                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3557
3558         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3559                 device_config->vp_config[i].vp_id = i;
3560                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3561                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3562                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3563                                 vxge_debug_ll_config(VXGE_TRACE,
3564                                         "%s: vpath: %d is not available",
3565                                         VXGE_DRIVER_NAME, i);
3566                                 continue;
3567                         } else {
3568                                 vxge_debug_ll_config(VXGE_TRACE,
3569                                         "%s: vpath: %d available",
3570                                         VXGE_DRIVER_NAME, i);
3571                                 no_of_vpaths++;
3572                         }
3573                 } else {
3574                         vxge_debug_ll_config(VXGE_TRACE,
3575                                 "%s: vpath: %d is not configured, "
3576                                 "max_config_vpath exceeded",
3577                                 VXGE_DRIVER_NAME, i);
3578                         break;
3579                 }
3580
3581                 /* Configure Tx fifo's */
3582                 device_config->vp_config[i].fifo.enable =
3583                                                 VXGE_HW_FIFO_ENABLE;
3584                 device_config->vp_config[i].fifo.max_frags =
3585                                 MAX_SKB_FRAGS + 1;
3586                 device_config->vp_config[i].fifo.memblock_size =
3587                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3588
3589                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3590                                 sizeof(struct vxge_hw_fifo_txd);
3591                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3592
3593                 device_config->vp_config[i].fifo.fifo_blocks =
3594                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3595
3596                 device_config->vp_config[i].fifo.intr =
3597                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3598
3599                 /* Configure tti properties */
3600                 device_config->vp_config[i].tti.intr_enable =
3601                                         VXGE_HW_TIM_INTR_ENABLE;
3602
3603                 device_config->vp_config[i].tti.btimer_val =
3604                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3605
3606                 device_config->vp_config[i].tti.timer_ac_en =
3607                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3608
3609                 /* For msi-x with napi (each vector
3610                 has a handler of its own) -
3611                 Set CI to OFF for all vpaths */
3612                 device_config->vp_config[i].tti.timer_ci_en =
3613                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3614
3615                 device_config->vp_config[i].tti.timer_ri_en =
3616                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3617
3618                 device_config->vp_config[i].tti.util_sel =
3619                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3620
3621                 device_config->vp_config[i].tti.ltimer_val =
3622                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3623
3624                 device_config->vp_config[i].tti.rtimer_val =
3625                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3626
3627                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3628                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3629                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3630                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3631                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3632                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3633                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3634
3635                 /* Configure Rx rings */
3636                 device_config->vp_config[i].ring.enable  =
3637                                                 VXGE_HW_RING_ENABLE;
3638
3639                 device_config->vp_config[i].ring.ring_blocks  =
3640                                                 VXGE_HW_DEF_RING_BLOCKS;
3641                 device_config->vp_config[i].ring.buffer_mode =
3642                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3643                 device_config->vp_config[i].ring.rxds_limit  =
3644                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3645                 device_config->vp_config[i].ring.scatter_mode =
3646                                         VXGE_HW_RING_SCATTER_MODE_A;
3647
3648                 /* Configure rti properties */
3649                 device_config->vp_config[i].rti.intr_enable =
3650                                         VXGE_HW_TIM_INTR_ENABLE;
3651
3652                 device_config->vp_config[i].rti.btimer_val =
3653                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3654
3655                 device_config->vp_config[i].rti.timer_ac_en =
3656                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3657
3658                 device_config->vp_config[i].rti.timer_ci_en =
3659                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3660
3661                 device_config->vp_config[i].rti.timer_ri_en =
3662                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3663
3664                 device_config->vp_config[i].rti.util_sel =
3665                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3666
3667                 device_config->vp_config[i].rti.urange_a =
3668                                                 RTI_RX_URANGE_A;
3669                 device_config->vp_config[i].rti.urange_b =
3670                                                 RTI_RX_URANGE_B;
3671                 device_config->vp_config[i].rti.urange_c =
3672                                                 RTI_RX_URANGE_C;
3673                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3674                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3675                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3676                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3677
3678                 device_config->vp_config[i].rti.rtimer_val =
3679                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3680
3681                 device_config->vp_config[i].rti.ltimer_val =
3682                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3683
3684                 device_config->vp_config[i].rpa_strip_vlan_tag =
3685                         vlan_tag_strip;
3686         }
3687
3688         driver_config->vpath_per_dev = temp;
3689         return no_of_vpaths;
3690 }
3691
3692 /* initialize device configuratrions */
3693 static void __devinit vxge_device_config_init(
3694                                 struct vxge_hw_device_config *device_config,
3695                                 int *intr_type)
3696 {
3697         /* Used for CQRQ/SRQ. */
3698         device_config->dma_blockpool_initial =
3699                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3700
3701         device_config->dma_blockpool_max =
3702                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3703
3704         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3705                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3706
3707 #ifndef CONFIG_PCI_MSI
3708         vxge_debug_init(VXGE_ERR,
3709                 "%s: This Kernel does not support "
3710                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3711         *intr_type = INTA;
3712 #endif
3713
3714         /* Configure whether MSI-X or IRQL. */
3715         switch (*intr_type) {
3716         case INTA:
3717                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3718                 break;
3719
3720         case MSI_X:
3721                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3722                 break;
3723         }
3724         /* Timer period between device poll */
3725         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3726
3727         /* Configure mac based steering. */
3728         device_config->rts_mac_en = addr_learn_en;
3729
3730         /* Configure Vpaths */
3731         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3732
3733         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3734                         __func__);
3735         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3736                         device_config->dma_blockpool_initial);
3737         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3738                         device_config->dma_blockpool_max);
3739         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3740                         device_config->intr_mode);
3741         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3742                         device_config->device_poll_millis);
3743         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3744                         device_config->rts_mac_en);
3745         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3746                         device_config->rth_en);
3747         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3748                         device_config->rth_it_type);
3749 }
3750
3751 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3752 {
3753         int i;
3754
3755         vxge_debug_init(VXGE_TRACE,
3756                 "%s: %d Vpath(s) opened",
3757                 vdev->ndev->name, vdev->no_of_vpath);
3758
3759         switch (vdev->config.intr_type) {
3760         case INTA:
3761                 vxge_debug_init(VXGE_TRACE,
3762                         "%s: Interrupt type INTA", vdev->ndev->name);
3763                 break;
3764
3765         case MSI_X:
3766                 vxge_debug_init(VXGE_TRACE,
3767                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3768                 break;
3769         }
3770
3771         if (vdev->config.rth_steering) {
3772                 vxge_debug_init(VXGE_TRACE,
3773                         "%s: RTH steering enabled for TCP_IPV4",
3774                         vdev->ndev->name);
3775         } else {
3776                 vxge_debug_init(VXGE_TRACE,
3777                         "%s: RTH steering disabled", vdev->ndev->name);
3778         }
3779
3780         switch (vdev->config.tx_steering_type) {
3781         case NO_STEERING:
3782                 vxge_debug_init(VXGE_TRACE,
3783                         "%s: Tx steering disabled", vdev->ndev->name);
3784                 break;
3785         case TX_PRIORITY_STEERING:
3786                 vxge_debug_init(VXGE_TRACE,
3787                         "%s: Unsupported tx steering option",
3788                         vdev->ndev->name);
3789                 vxge_debug_init(VXGE_TRACE,
3790                         "%s: Tx steering disabled", vdev->ndev->name);
3791                 vdev->config.tx_steering_type = 0;
3792                 break;
3793         case TX_VLAN_STEERING:
3794                 vxge_debug_init(VXGE_TRACE,
3795                         "%s: Unsupported tx steering option",
3796                         vdev->ndev->name);
3797                 vxge_debug_init(VXGE_TRACE,
3798                         "%s: Tx steering disabled", vdev->ndev->name);
3799                 vdev->config.tx_steering_type = 0;
3800                 break;
3801         case TX_MULTIQ_STEERING:
3802                 vxge_debug_init(VXGE_TRACE,
3803                         "%s: Tx multiqueue steering enabled",
3804                         vdev->ndev->name);
3805                 break;
3806         case TX_PORT_STEERING:
3807                 vxge_debug_init(VXGE_TRACE,
3808                         "%s: Tx port steering enabled",
3809                         vdev->ndev->name);
3810                 break;
3811         default:
3812                 vxge_debug_init(VXGE_ERR,
3813                         "%s: Unsupported tx steering type",
3814                         vdev->ndev->name);
3815                 vxge_debug_init(VXGE_TRACE,
3816                         "%s: Tx steering disabled", vdev->ndev->name);
3817                 vdev->config.tx_steering_type = 0;
3818         }
3819
3820         if (vdev->config.gro_enable) {
3821                 vxge_debug_init(VXGE_ERR,
3822                         "%s: Generic receive offload enabled",
3823                         vdev->ndev->name);
3824         } else
3825                 vxge_debug_init(VXGE_TRACE,
3826                         "%s: Generic receive offload disabled",
3827                         vdev->ndev->name);
3828
3829         if (vdev->config.addr_learn_en)
3830                 vxge_debug_init(VXGE_TRACE,
3831                         "%s: MAC Address learning enabled", vdev->ndev->name);
3832
3833         vxge_debug_init(VXGE_TRACE,
3834                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3835
3836         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3837                 if (!vxge_bVALn(vpath_mask, i, 1))
3838                         continue;
3839                 vxge_debug_ll_config(VXGE_TRACE,
3840                         "%s: MTU size - %d", vdev->ndev->name,
3841                         ((struct __vxge_hw_device  *)(vdev->devh))->
3842                                 config.vp_config[i].mtu);
3843                 vxge_debug_init(VXGE_TRACE,
3844                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3845                         ((struct __vxge_hw_device  *)(vdev->devh))->
3846                                 config.vp_config[i].rpa_strip_vlan_tag
3847                         ? "Enabled" : "Disabled");
3848                 vxge_debug_init(VXGE_TRACE,
3849                         "%s: Ring blocks : %d", vdev->ndev->name,
3850                         ((struct __vxge_hw_device  *)(vdev->devh))->
3851                                 config.vp_config[i].ring.ring_blocks);
3852                 vxge_debug_init(VXGE_TRACE,
3853                         "%s: Fifo blocks : %d", vdev->ndev->name,
3854                         ((struct __vxge_hw_device  *)(vdev->devh))->
3855                                 config.vp_config[i].fifo.fifo_blocks);
3856                 vxge_debug_ll_config(VXGE_TRACE,
3857                         "%s: Max frags : %d", vdev->ndev->name,
3858                         ((struct __vxge_hw_device  *)(vdev->devh))->
3859                                 config.vp_config[i].fifo.max_frags);
3860                 break;
3861         }
3862 }
3863
3864 #ifdef CONFIG_PM
3865 /**
3866  * vxge_pm_suspend - vxge power management suspend entry point
3867  *
3868  */
3869 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3870 {
3871         return -ENOSYS;
3872 }
3873 /**
3874  * vxge_pm_resume - vxge power management resume entry point
3875  *
3876  */
3877 static int vxge_pm_resume(struct pci_dev *pdev)
3878 {
3879         return -ENOSYS;
3880 }
3881
3882 #endif
3883
3884 /**
3885  * vxge_io_error_detected - called when PCI error is detected
3886  * @pdev: Pointer to PCI device
3887  * @state: The current pci connection state
3888  *
3889  * This function is called after a PCI bus error affecting
3890  * this device has been detected.
3891  */
3892 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3893                                                 pci_channel_state_t state)
3894 {
3895         struct __vxge_hw_device  *hldev =
3896                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3897         struct net_device *netdev = hldev->ndev;
3898
3899         netif_device_detach(netdev);
3900
3901         if (state == pci_channel_io_perm_failure)
3902                 return PCI_ERS_RESULT_DISCONNECT;
3903
3904         if (netif_running(netdev)) {
3905                 /* Bring down the card, while avoiding PCI I/O */
3906                 do_vxge_close(netdev, 0);
3907         }
3908
3909         pci_disable_device(pdev);
3910
3911         return PCI_ERS_RESULT_NEED_RESET;
3912 }
3913
3914 /**
3915  * vxge_io_slot_reset - called after the pci bus has been reset.
3916  * @pdev: Pointer to PCI device
3917  *
3918  * Restart the card from scratch, as if from a cold-boot.
3919  * At this point, the card has exprienced a hard reset,
3920  * followed by fixups by BIOS, and has its config space
3921  * set up identically to what it was at cold boot.
3922  */
3923 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3924 {
3925         struct __vxge_hw_device  *hldev =
3926                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3927         struct net_device *netdev = hldev->ndev;
3928
3929         struct vxgedev *vdev = netdev_priv(netdev);
3930
3931         if (pci_enable_device(pdev)) {
3932                 printk(KERN_ERR "%s: "
3933                         "Cannot re-enable device after reset\n",
3934                         VXGE_DRIVER_NAME);
3935                 return PCI_ERS_RESULT_DISCONNECT;
3936         }
3937
3938         pci_set_master(pdev);
3939         vxge_reset(vdev);
3940
3941         return PCI_ERS_RESULT_RECOVERED;
3942 }
3943
3944 /**
3945  * vxge_io_resume - called when traffic can start flowing again.
3946  * @pdev: Pointer to PCI device
3947  *
3948  * This callback is called when the error recovery driver tells
3949  * us that its OK to resume normal operation.
3950  */
3951 static void vxge_io_resume(struct pci_dev *pdev)
3952 {
3953         struct __vxge_hw_device  *hldev =
3954                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3955         struct net_device *netdev = hldev->ndev;
3956
3957         if (netif_running(netdev)) {
3958                 if (vxge_open(netdev)) {
3959                         printk(KERN_ERR "%s: "
3960                                 "Can't bring device back up after reset\n",
3961                                 VXGE_DRIVER_NAME);
3962                         return;
3963                 }
3964         }
3965
3966         netif_device_attach(netdev);
3967 }
3968
3969 static inline u32 vxge_get_num_vfs(u64 function_mode)
3970 {
3971         u32 num_functions = 0;
3972
3973         switch (function_mode) {
3974         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
3975         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
3976                 num_functions = 8;
3977                 break;
3978         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
3979                 num_functions = 1;
3980                 break;
3981         case VXGE_HW_FUNCTION_MODE_SRIOV:
3982         case VXGE_HW_FUNCTION_MODE_MRIOV:
3983         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
3984                 num_functions = 17;
3985                 break;
3986         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
3987                 num_functions = 4;
3988                 break;
3989         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
3990                 num_functions = 2;
3991                 break;
3992         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
3993                 num_functions = 8; /* TODO */
3994                 break;
3995         }
3996         return num_functions;
3997 }
3998
3999 /**
4000  * vxge_probe
4001  * @pdev : structure containing the PCI related information of the device.
4002  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4003  * Description:
4004  * This function is called when a new PCI device gets detected and initializes
4005  * it.
4006  * Return value:
4007  * returns 0 on success and negative on failure.
4008  *
4009  */
4010 static int __devinit
4011 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4012 {
4013         struct __vxge_hw_device  *hldev;
4014         enum vxge_hw_status status;
4015         int ret;
4016         int high_dma = 0;
4017         u64 vpath_mask = 0;
4018         struct vxgedev *vdev;
4019         struct vxge_config ll_config;
4020         struct vxge_hw_device_config *device_config = NULL;
4021         struct vxge_hw_device_attr attr;
4022         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4023         u8 *macaddr;
4024         struct vxge_mac_addrs *entry;
4025         static int bus = -1, device = -1;
4026         u32 host_type;
4027         u8 new_device = 0;
4028         enum vxge_hw_status is_privileged;
4029         u32 function_mode;
4030         u32 num_vfs = 0;
4031
4032         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4033         attr.pdev = pdev;
4034
4035         /* In SRIOV-17 mode, functions of the same adapter
4036          * can be deployed on different buses */
4037         if ((!pdev->is_virtfn) && ((bus != pdev->bus->number) ||
4038                 (device != PCI_SLOT(pdev->devfn))))
4039                 new_device = 1;
4040
4041         bus = pdev->bus->number;
4042         device = PCI_SLOT(pdev->devfn);
4043
4044         if (new_device) {
4045                 if (driver_config->config_dev_cnt &&
4046                    (driver_config->config_dev_cnt !=
4047                         driver_config->total_dev_cnt))
4048                         vxge_debug_init(VXGE_ERR,
4049                                 "%s: Configured %d of %d devices",
4050                                 VXGE_DRIVER_NAME,
4051                                 driver_config->config_dev_cnt,
4052                                 driver_config->total_dev_cnt);
4053                 driver_config->config_dev_cnt = 0;
4054                 driver_config->total_dev_cnt = 0;
4055         }
4056         /* Now making the CPU based no of vpath calculation
4057          * applicable for individual functions as well.
4058          */
4059         driver_config->g_no_cpus = 0;
4060         driver_config->vpath_per_dev = max_config_vpath;
4061
4062         driver_config->total_dev_cnt++;
4063         if (++driver_config->config_dev_cnt > max_config_dev) {
4064                 ret = 0;
4065                 goto _exit0;
4066         }
4067
4068         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4069                 GFP_KERNEL);
4070         if (!device_config) {
4071                 ret = -ENOMEM;
4072                 vxge_debug_init(VXGE_ERR,
4073                         "device_config : malloc failed %s %d",
4074                         __FILE__, __LINE__);
4075                 goto _exit0;
4076         }
4077
4078         memset(&ll_config, 0, sizeof(struct vxge_config));
4079         ll_config.tx_steering_type = TX_MULTIQ_STEERING;
4080         ll_config.intr_type = MSI_X;
4081         ll_config.napi_weight = NEW_NAPI_WEIGHT;
4082         ll_config.rth_steering = RTH_STEERING;
4083
4084         /* get the default configuration parameters */
4085         vxge_hw_device_config_default_get(device_config);
4086
4087         /* initialize configuration parameters */
4088         vxge_device_config_init(device_config, &ll_config.intr_type);
4089
4090         ret = pci_enable_device(pdev);
4091         if (ret) {
4092                 vxge_debug_init(VXGE_ERR,
4093                         "%s : can not enable PCI device", __func__);
4094                 goto _exit0;
4095         }
4096
4097         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4098                 vxge_debug_ll_config(VXGE_TRACE,
4099                         "%s : using 64bit DMA", __func__);
4100
4101                 high_dma = 1;
4102
4103                 if (pci_set_consistent_dma_mask(pdev,
4104                                                 DMA_BIT_MASK(64))) {
4105                         vxge_debug_init(VXGE_ERR,
4106                                 "%s : unable to obtain 64bit DMA for "
4107                                 "consistent allocations", __func__);
4108                         ret = -ENOMEM;
4109                         goto _exit1;
4110                 }
4111         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4112                 vxge_debug_ll_config(VXGE_TRACE,
4113                         "%s : using 32bit DMA", __func__);
4114         } else {
4115                 ret = -ENOMEM;
4116                 goto _exit1;
4117         }
4118
4119         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4120                 vxge_debug_init(VXGE_ERR,
4121                         "%s : request regions failed", __func__);
4122                 ret = -ENODEV;
4123                 goto _exit1;
4124         }
4125
4126         pci_set_master(pdev);
4127
4128         attr.bar0 = pci_ioremap_bar(pdev, 0);
4129         if (!attr.bar0) {
4130                 vxge_debug_init(VXGE_ERR,
4131                         "%s : cannot remap io memory bar0", __func__);
4132                 ret = -ENODEV;
4133                 goto _exit2;
4134         }
4135         vxge_debug_ll_config(VXGE_TRACE,
4136                 "pci ioremap bar0: %p:0x%llx",
4137                 attr.bar0,
4138                 (unsigned long long)pci_resource_start(pdev, 0));
4139
4140         status = vxge_hw_device_hw_info_get(attr.bar0,
4141                         &ll_config.device_hw_info);
4142         if (status != VXGE_HW_OK) {
4143                 vxge_debug_init(VXGE_ERR,
4144                         "%s: Reading of hardware info failed."
4145                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4146                 ret = -EINVAL;
4147                 goto _exit3;
4148         }
4149
4150         if (ll_config.device_hw_info.fw_version.major !=
4151                 VXGE_DRIVER_FW_VERSION_MAJOR) {
4152                 vxge_debug_init(VXGE_ERR,
4153                         "%s: Incorrect firmware version."
4154                         "Please upgrade the firmware to version 1.x.x",
4155                         VXGE_DRIVER_NAME);
4156                 ret = -EINVAL;
4157                 goto _exit3;
4158         }
4159
4160         vpath_mask = ll_config.device_hw_info.vpath_mask;
4161         if (vpath_mask == 0) {
4162                 vxge_debug_ll_config(VXGE_TRACE,
4163                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4164                 ret = -EINVAL;
4165                 goto _exit3;
4166         }
4167
4168         vxge_debug_ll_config(VXGE_TRACE,
4169                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4170                 (unsigned long long)vpath_mask);
4171
4172         function_mode = ll_config.device_hw_info.function_mode;
4173         host_type = ll_config.device_hw_info.host_type;
4174         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4175                 ll_config.device_hw_info.func_id);
4176
4177         /* Check how many vpaths are available */
4178         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4179                 if (!((vpath_mask) & vxge_mBIT(i)))
4180                         continue;
4181                 max_vpath_supported++;
4182         }
4183
4184         if (new_device)
4185                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4186
4187         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4188         if (is_sriov(function_mode) && (max_config_dev > 1) &&
4189                 (ll_config.intr_type != INTA) &&
4190                 (is_privileged == VXGE_HW_OK)) {
4191                 ret = pci_enable_sriov(pdev, ((max_config_dev - 1) < num_vfs)
4192                         ? (max_config_dev - 1) : num_vfs);
4193                 if (ret)
4194                         vxge_debug_ll_config(VXGE_ERR,
4195                                 "Failed in enabling SRIOV mode: %d\n", ret);
4196         }
4197
4198         /*
4199          * Configure vpaths and get driver configured number of vpaths
4200          * which is less than or equal to the maximum vpaths per function.
4201          */
4202         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
4203         if (!no_of_vpath) {
4204                 vxge_debug_ll_config(VXGE_ERR,
4205                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4206                 ret = 0;
4207                 goto _exit3;
4208         }
4209
4210         /* Setting driver callbacks */
4211         attr.uld_callbacks.link_up = vxge_callback_link_up;
4212         attr.uld_callbacks.link_down = vxge_callback_link_down;
4213         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4214
4215         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4216         if (status != VXGE_HW_OK) {
4217                 vxge_debug_init(VXGE_ERR,
4218                         "Failed to initialize device (%d)", status);
4219                         ret = -EINVAL;
4220                         goto _exit3;
4221         }
4222
4223         /* if FCS stripping is not disabled in MAC fail driver load */
4224         if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) {
4225                 vxge_debug_init(VXGE_ERR,
4226                         "%s: FCS stripping is not disabled in MAC"
4227                         " failing driver load", VXGE_DRIVER_NAME);
4228                 ret = -EINVAL;
4229                 goto _exit4;
4230         }
4231
4232         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4233
4234         /* set private device info */
4235         pci_set_drvdata(pdev, hldev);
4236
4237         ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4238         ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4239         ll_config.addr_learn_en = addr_learn_en;
4240         ll_config.rth_algorithm = RTH_ALG_JENKINS;
4241         ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
4242         ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
4243         ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4244         ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
4245         ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4246         ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
4247         ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
4248         ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4249         ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4250
4251         if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
4252                 &vdev)) {
4253                 ret = -EINVAL;
4254                 goto _exit4;
4255         }
4256
4257         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4258         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4259                 vxge_hw_device_trace_level_get(hldev));
4260
4261         /* set private HW device info */
4262         hldev->ndev = vdev->ndev;
4263         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4264         vdev->bar0 = attr.bar0;
4265         vdev->max_vpath_supported = max_vpath_supported;
4266         vdev->no_of_vpath = no_of_vpath;
4267
4268         /* Virtual Path count */
4269         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4270                 if (!vxge_bVALn(vpath_mask, i, 1))
4271                         continue;
4272                 if (j >= vdev->no_of_vpath)
4273                         break;
4274
4275                 vdev->vpaths[j].is_configured = 1;
4276                 vdev->vpaths[j].device_id = i;
4277                 vdev->vpaths[j].fifo.driver_id = j;
4278                 vdev->vpaths[j].ring.driver_id = j;
4279                 vdev->vpaths[j].vdev = vdev;
4280                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4281                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4282                                 (u8 *)ll_config.device_hw_info.mac_addrs[i],
4283                                 ETH_ALEN);
4284
4285                 /* Initialize the mac address list header */
4286                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4287
4288                 vdev->vpaths[j].mac_addr_cnt = 0;
4289                 vdev->vpaths[j].mcast_addr_cnt = 0;
4290                 j++;
4291         }
4292         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4293         vdev->max_config_port = max_config_port;
4294
4295         vdev->vlan_tag_strip = vlan_tag_strip;
4296
4297         /* map the hashing selector table to the configured vpaths */
4298         for (i = 0; i < vdev->no_of_vpath; i++)
4299                 vdev->vpath_selector[i] = vpath_selector[i];
4300
4301         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4302
4303         ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4304         ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4305         ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4306
4307         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4308                 vdev->ndev->name, ll_config.device_hw_info.serial_number);
4309
4310         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4311                 vdev->ndev->name, ll_config.device_hw_info.part_number);
4312
4313         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4314                 vdev->ndev->name, ll_config.device_hw_info.product_desc);
4315
4316         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4317                 vdev->ndev->name, macaddr);
4318
4319         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4320                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4321
4322         vxge_debug_init(VXGE_TRACE,
4323                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4324                 ll_config.device_hw_info.fw_version.version,
4325                 ll_config.device_hw_info.fw_date.date);
4326
4327         if (new_device) {
4328                 switch (ll_config.device_hw_info.function_mode) {
4329                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4330                         vxge_debug_init(VXGE_TRACE,
4331                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4332                 break;
4333                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4334                         vxge_debug_init(VXGE_TRACE,
4335                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4336                 break;
4337                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4338                         vxge_debug_init(VXGE_TRACE,
4339                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4340                 break;
4341                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4342                         vxge_debug_init(VXGE_TRACE,
4343                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4344                 break;
4345                 }
4346         }
4347
4348         vxge_print_parm(vdev, vpath_mask);
4349
4350         /* Store the fw version for ethttool option */
4351         strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
4352         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4353         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4354
4355         /* Copy the station mac address to the list */
4356         for (i = 0; i < vdev->no_of_vpath; i++) {
4357                 entry = (struct vxge_mac_addrs *)
4358                                 kzalloc(sizeof(struct vxge_mac_addrs),
4359                                         GFP_KERNEL);
4360                 if (NULL == entry) {
4361                         vxge_debug_init(VXGE_ERR,
4362                                 "%s: mac_addr_list : memory allocation failed",
4363                                 vdev->ndev->name);
4364                         ret = -EPERM;
4365                         goto _exit5;
4366                 }
4367                 macaddr = (u8 *)&entry->macaddr;
4368                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4369                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4370                 vdev->vpaths[i].mac_addr_cnt = 1;
4371         }
4372
4373         kfree(device_config);
4374
4375         /*
4376          * INTA is shared in multi-function mode. This is unlike the INTA
4377          * implementation in MR mode, where each VH has its own INTA message.
4378          * - INTA is masked (disabled) as long as at least one function sets
4379          * its TITAN_MASK_ALL_INT.ALARM bit.
4380          * - INTA is unmasked (enabled) when all enabled functions have cleared
4381          * their own TITAN_MASK_ALL_INT.ALARM bit.
4382          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4383          * Though this driver leaves the top level interrupts unmasked while
4384          * leaving the required module interrupt bits masked on exit, there
4385          * could be a rougue driver around that does not follow this procedure
4386          * resulting in a failure to generate interrupts. The following code is
4387          * present to prevent such a failure.
4388          */
4389
4390         if (ll_config.device_hw_info.function_mode ==
4391                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4392                 if (vdev->config.intr_type == INTA)
4393                         vxge_hw_device_unmask_all(hldev);
4394
4395         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4396                 vdev->ndev->name, __func__, __LINE__);
4397
4398         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4399         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4400                 vxge_hw_device_trace_level_get(hldev));
4401
4402         return 0;
4403
4404 _exit5:
4405         for (i = 0; i < vdev->no_of_vpath; i++)
4406                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4407
4408         vxge_device_unregister(hldev);
4409 _exit4:
4410         pci_disable_sriov(pdev);
4411         vxge_hw_device_terminate(hldev);
4412 _exit3:
4413         iounmap(attr.bar0);
4414 _exit2:
4415         pci_release_regions(pdev);
4416 _exit1:
4417         pci_disable_device(pdev);
4418 _exit0:
4419         kfree(device_config);
4420         driver_config->config_dev_cnt--;
4421         pci_set_drvdata(pdev, NULL);
4422         return ret;
4423 }
4424
4425 /**
4426  * vxge_rem_nic - Free the PCI device
4427  * @pdev: structure containing the PCI related information of the device.
4428  * Description: This function is called by the Pci subsystem to release a
4429  * PCI device and free up all resource held up by the device.
4430  */
4431 static void __devexit
4432 vxge_remove(struct pci_dev *pdev)
4433 {
4434         struct __vxge_hw_device  *hldev;
4435         struct vxgedev *vdev = NULL;
4436         struct net_device *dev;
4437         int i = 0;
4438 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4439         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4440         u32 level_trace;
4441 #endif
4442
4443         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4444
4445         if (hldev == NULL)
4446                 return;
4447         dev = hldev->ndev;
4448         vdev = netdev_priv(dev);
4449
4450 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4451         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4452         level_trace = vdev->level_trace;
4453 #endif
4454         vxge_debug_entryexit(level_trace,
4455                 "%s:%d", __func__, __LINE__);
4456
4457         vxge_debug_init(level_trace,
4458                 "%s : removing PCI device...", __func__);
4459         vxge_device_unregister(hldev);
4460
4461         for (i = 0; i < vdev->no_of_vpath; i++) {
4462                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4463                 vdev->vpaths[i].mcast_addr_cnt = 0;
4464                 vdev->vpaths[i].mac_addr_cnt = 0;
4465         }
4466
4467         kfree(vdev->vpaths);
4468
4469         iounmap(vdev->bar0);
4470
4471         pci_disable_sriov(pdev);
4472
4473         /* we are safe to free it now */
4474         free_netdev(dev);
4475
4476         vxge_debug_init(level_trace,
4477                 "%s:%d  Device unregistered", __func__, __LINE__);
4478
4479         vxge_hw_device_terminate(hldev);
4480
4481         pci_disable_device(pdev);
4482         pci_release_regions(pdev);
4483         pci_set_drvdata(pdev, NULL);
4484         vxge_debug_entryexit(level_trace,
4485                 "%s:%d  Exiting...", __func__, __LINE__);
4486 }
4487
4488 static struct pci_error_handlers vxge_err_handler = {
4489         .error_detected = vxge_io_error_detected,
4490         .slot_reset = vxge_io_slot_reset,
4491         .resume = vxge_io_resume,
4492 };
4493
4494 static struct pci_driver vxge_driver = {
4495         .name = VXGE_DRIVER_NAME,
4496         .id_table = vxge_id_table,
4497         .probe = vxge_probe,
4498         .remove = __devexit_p(vxge_remove),
4499 #ifdef CONFIG_PM
4500         .suspend = vxge_pm_suspend,
4501         .resume = vxge_pm_resume,
4502 #endif
4503         .err_handler = &vxge_err_handler,
4504 };
4505
4506 static int __init
4507 vxge_starter(void)
4508 {
4509         int ret = 0;
4510         char version[32];
4511         snprintf(version, 32, "%s", DRV_VERSION);
4512
4513         printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
4514                 VXGE_DRIVER_NAME);
4515         printk(KERN_CRIT "%s: Driver version: %s\n",
4516                         VXGE_DRIVER_NAME, version);
4517
4518         verify_bandwidth();
4519
4520         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4521         if (!driver_config)
4522                 return -ENOMEM;
4523
4524         ret = pci_register_driver(&vxge_driver);
4525
4526         if (driver_config->config_dev_cnt &&
4527            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4528                 vxge_debug_init(VXGE_ERR,
4529                         "%s: Configured %d of %d devices",
4530                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4531                         driver_config->total_dev_cnt);
4532
4533         if (ret)
4534                 kfree(driver_config);
4535
4536         return ret;
4537 }
4538
4539 static void __exit
4540 vxge_closer(void)
4541 {
4542         pci_unregister_driver(&vxge_driver);
4543         kfree(driver_config);
4544 }
4545 module_init(vxge_starter);
4546 module_exit(vxge_closer);