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 Exar Corp's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2010 Exar Corp.
  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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  45
  46 #include <linux/if_vlan.h>
  47 #include <linux/pci.h>
  48 #include <linux/slab.h>
  49 #include <linux/tcp.h>
  50 #include <net/ip.h>
  51 #include <linux/netdevice.h>
  52 #include <linux/etherdevice.h>
  53 #include "vxge-main.h"
  54 #include "vxge-reg.h"
  55
  56 MODULE_LICENSE("Dual BSD/GPL");
  57 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  58         "Virtualized Server Adapter");
  59
  60 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
  61         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  62         PCI_ANY_ID},
  63         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  64         PCI_ANY_ID},
  65         {0}
  66 };
  67
  68 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  69
  70 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  71 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  72 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  73 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  74 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  75 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  76
  77 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  78                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  79 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  80         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  81 module_param_array(bw_percentage, uint, NULL, 0);
  82
  83 static struct vxge_drv_config *driver_config;
  84
  85 static enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev,
  86                                              struct macInfo *mac);
  87 static enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev,
  88                                              struct macInfo *mac);
  89 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac);
  90 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac);
  91 static enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath);
  92 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath);
  93 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev);
  94
  95 static inline int is_vxge_card_up(struct vxgedev *vdev)
  96 {
  97         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  98 }
  99
 100 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
 101 {
 102         struct sk_buff **skb_ptr = NULL;
 103         struct sk_buff **temp;
 104 #define NR_SKB_COMPLETED 128
 105         struct sk_buff *completed[NR_SKB_COMPLETED];
 106         int more;
 107
 108         do {
 109                 more = 0;
 110                 skb_ptr = completed;
 111
 112                 if (__netif_tx_trylock(fifo->txq)) {
 113                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 114                                                 NR_SKB_COMPLETED, &more);
 115                         __netif_tx_unlock(fifo->txq);
 116                 }
 117
 118                 /* free SKBs */
 119                 for (temp = completed; temp != skb_ptr; temp++)
 120                         dev_kfree_skb_irq(*temp);
 121         } while (more);
 122 }
 123
 124 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 125 {
 126         int i;
 127
 128         /* Complete all transmits */
 129         for (i = 0; i < vdev->no_of_vpath; i++)
 130                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 131 }
 132
 133 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 134 {
 135         int i;
 136         struct vxge_ring *ring;
 137
 138         /* Complete all receives*/
 139         for (i = 0; i < vdev->no_of_vpath; i++) {
 140                 ring = &vdev->vpaths[i].ring;
 141                 vxge_hw_vpath_poll_rx(ring->handle);
 142         }
 143 }
 144
 145 /*
 146  * vxge_callback_link_up
 147  *
 148  * This function is called during interrupt context to notify link up state
 149  * change.
 150  */
 151 static void
 152 vxge_callback_link_up(struct __vxge_hw_device *hldev)
 153 {
 154         struct net_device *dev = hldev->ndev;
 155         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 156
 157         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 158                 vdev->ndev->name, __func__, __LINE__);
 159         netdev_notice(vdev->ndev, "Link Up\n");
 160         vdev->stats.link_up++;
 161
 162         netif_carrier_on(vdev->ndev);
 163         netif_tx_wake_all_queues(vdev->ndev);
 164
 165         vxge_debug_entryexit(VXGE_TRACE,
 166                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 167 }
 168
 169 /*
 170  * vxge_callback_link_down
 171  *
 172  * This function is called during interrupt context to notify link down state
 173  * change.
 174  */
 175 static void
 176 vxge_callback_link_down(struct __vxge_hw_device *hldev)
 177 {
 178         struct net_device *dev = hldev->ndev;
 179         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
 180
 181         vxge_debug_entryexit(VXGE_TRACE,
 182                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 183         netdev_notice(vdev->ndev, "Link Down\n");
 184
 185         vdev->stats.link_down++;
 186         netif_carrier_off(vdev->ndev);
 187         netif_tx_stop_all_queues(vdev->ndev);
 188
 189         vxge_debug_entryexit(VXGE_TRACE,
 190                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 191 }
 192
 193 /*
 194  * vxge_rx_alloc
 195  *
 196  * Allocate SKB.
 197  */
 198 static struct sk_buff*
 199 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 200 {
 201         struct net_device    *dev;
 202         struct sk_buff       *skb;
 203         struct vxge_rx_priv *rx_priv;
 204
 205         dev = ring->ndev;
 206         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 207                 ring->ndev->name, __func__, __LINE__);
 208
 209         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 210
 211         /* try to allocate skb first. this one may fail */
 212         skb = netdev_alloc_skb(dev, skb_size +
 213         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 214         if (skb == NULL) {
 215                 vxge_debug_mem(VXGE_ERR,
 216                         "%s: out of memory to allocate SKB", dev->name);
 217                 ring->stats.skb_alloc_fail++;
 218                 return NULL;
 219         }
 220
 221         vxge_debug_mem(VXGE_TRACE,
 222                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 223                 __func__, __LINE__, skb);
 224
 225         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 226
 227         rx_priv->skb = skb;
 228         rx_priv->skb_data = NULL;
 229         rx_priv->data_size = skb_size;
 230         vxge_debug_entryexit(VXGE_TRACE,
 231                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 232
 233         return skb;
 234 }
 235
 236 /*
 237  * vxge_rx_map
 238  */
 239 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 240 {
 241         struct vxge_rx_priv *rx_priv;
 242         dma_addr_t dma_addr;
 243
 244         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 245                 ring->ndev->name, __func__, __LINE__);
 246         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 247
 248         rx_priv->skb_data = rx_priv->skb->data;
 249         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 250                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 251
 252         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 253                 ring->stats.pci_map_fail++;
 254                 return -EIO;
 255         }
 256         vxge_debug_mem(VXGE_TRACE,
 257                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 258                 ring->ndev->name, __func__, __LINE__,
 259                 (unsigned long long)dma_addr);
 260         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 261
 262         rx_priv->data_dma = dma_addr;
 263         vxge_debug_entryexit(VXGE_TRACE,
 264                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 265
 266         return 0;
 267 }
 268
 269 /*
 270  * vxge_rx_initial_replenish
 271  * Allocation of RxD as an initial replenish procedure.
 272  */
 273 static enum vxge_hw_status
 274 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 275 {
 276         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 277         struct vxge_rx_priv *rx_priv;
 278
 279         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 280                 ring->ndev->name, __func__, __LINE__);
 281         if (vxge_rx_alloc(dtrh, ring,
 282                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 283                 return VXGE_HW_FAIL;
 284
 285         if (vxge_rx_map(dtrh, ring)) {
 286                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 287                 dev_kfree_skb(rx_priv->skb);
 288
 289                 return VXGE_HW_FAIL;
 290         }
 291         vxge_debug_entryexit(VXGE_TRACE,
 292                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 293
 294         return VXGE_HW_OK;
 295 }
 296
 297 static inline void
 298 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 299                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 300 {
 301
 302         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 303                         ring->ndev->name, __func__, __LINE__);
 304         skb_record_rx_queue(skb, ring->driver_id);
 305         skb->protocol = eth_type_trans(skb, ring->ndev);
 306
 307         ring->stats.rx_frms++;
 308         ring->stats.rx_bytes += pkt_length;
 309
 310         if (skb->pkt_type == PACKET_MULTICAST)
 311                 ring->stats.rx_mcast++;
 312
 313         vxge_debug_rx(VXGE_TRACE,
 314                 "%s: %s:%d  skb protocol = %d",
 315                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 316
 317         if (ring->gro_enable) {
 318                 if (ring->vlgrp && ext_info->vlan &&
 319                         (ring->vlan_tag_strip ==
 320                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 321                         vlan_gro_receive(ring->napi_p, ring->vlgrp,
 322                                         ext_info->vlan, skb);
 323                 else
 324                         napi_gro_receive(ring->napi_p, skb);
 325         } else {
 326                 if (ring->vlgrp && vlan &&
 327                         (ring->vlan_tag_strip ==
 328                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 329                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 330                 else
 331                         netif_receive_skb(skb);
 332         }
 333         vxge_debug_entryexit(VXGE_TRACE,
 334                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 335 }
 336
 337 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 338                                     struct vxge_rx_priv *rx_priv)
 339 {
 340         pci_dma_sync_single_for_device(ring->pdev,
 341                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 342
 343         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 344         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 345 }
 346
 347 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 348                              void *post_dtr, struct __vxge_hw_ring *ringh)
 349 {
 350         int dtr_count = *dtr_cnt;
 351         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 352                 if (*first_dtr)
 353                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 354                 *first_dtr = post_dtr;
 355         } else
 356                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 357         dtr_count++;
 358         *dtr_cnt = dtr_count;
 359 }
 360
 361 /*
 362  * vxge_rx_1b_compl
 363  *
 364  * If the interrupt is because of a received frame or if the receive ring
 365  * contains fresh as yet un-processed frames, this function is called.
 366  */
 367 static enum vxge_hw_status
 368 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 369                  u8 t_code, void *userdata)
 370 {
 371         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 372         struct  net_device *dev = ring->ndev;
 373         unsigned int dma_sizes;
 374         void *first_dtr = NULL;
 375         int dtr_cnt = 0;
 376         int data_size;
 377         dma_addr_t data_dma;
 378         int pkt_length;
 379         struct sk_buff *skb;
 380         struct vxge_rx_priv *rx_priv;
 381         struct vxge_hw_ring_rxd_info ext_info;
 382         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 383                 ring->ndev->name, __func__, __LINE__);
 384         ring->pkts_processed = 0;
 385
 386         vxge_hw_ring_replenish(ringh);
 387
 388         do {
 389                 prefetch((char *)dtr + L1_CACHE_BYTES);
 390                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 391                 skb = rx_priv->skb;
 392                 data_size = rx_priv->data_size;
 393                 data_dma = rx_priv->data_dma;
 394                 prefetch(rx_priv->skb_data);
 395
 396                 vxge_debug_rx(VXGE_TRACE,
 397                         "%s: %s:%d  skb = 0x%p",
 398                         ring->ndev->name, __func__, __LINE__, skb);
 399
 400                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 401                 pkt_length = dma_sizes;
 402
 403                 pkt_length -= ETH_FCS_LEN;
 404
 405                 vxge_debug_rx(VXGE_TRACE,
 406                         "%s: %s:%d  Packet Length = %d",
 407                         ring->ndev->name, __func__, __LINE__, pkt_length);
 408
 409                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 410
 411                 /* check skb validity */
 412                 vxge_assert(skb);
 413
 414                 prefetch((char *)skb + L1_CACHE_BYTES);
 415                 if (unlikely(t_code)) {
 416
 417                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 418                                 VXGE_HW_OK) {
 419
 420                                 ring->stats.rx_errors++;
 421                                 vxge_debug_rx(VXGE_TRACE,
 422                                         "%s: %s :%d Rx T_code is %d",
 423                                         ring->ndev->name, __func__,
 424                                         __LINE__, t_code);
 425
 426                                 /* If the t_code is not supported and if the
 427                                  * t_code is other than 0x5 (unparseable packet
 428                                  * such as unknown UPV6 header), Drop it !!!
 429                                  */
 430                                 vxge_re_pre_post(dtr, ring, rx_priv);
 431
 432                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 433                                 ring->stats.rx_dropped++;
 434                                 continue;
 435                         }
 436                 }
 437
 438                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 439
 440                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 441
 442                                 if (!vxge_rx_map(dtr, ring)) {
 443                                         skb_put(skb, pkt_length);
 444
 445                                         pci_unmap_single(ring->pdev, data_dma,
 446                                                 data_size, PCI_DMA_FROMDEVICE);
 447
 448                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 449                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 450                                                 ringh);
 451                                 } else {
 452                                         dev_kfree_skb(rx_priv->skb);
 453                                         rx_priv->skb = skb;
 454                                         rx_priv->data_size = data_size;
 455                                         vxge_re_pre_post(dtr, ring, rx_priv);
 456
 457                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 458                                                 ringh);
 459                                         ring->stats.rx_dropped++;
 460                                         break;
 461                                 }
 462                         } else {
 463                                 vxge_re_pre_post(dtr, ring, rx_priv);
 464
 465                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 466                                 ring->stats.rx_dropped++;
 467                                 break;
 468                         }
 469                 } else {
 470                         struct sk_buff *skb_up;
 471
 472                         skb_up = netdev_alloc_skb(dev, pkt_length +
 473                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 474                         if (skb_up != NULL) {
 475                                 skb_reserve(skb_up,
 476                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 477
 478                                 pci_dma_sync_single_for_cpu(ring->pdev,
 479                                         data_dma, data_size,
 480                                         PCI_DMA_FROMDEVICE);
 481
 482                                 vxge_debug_mem(VXGE_TRACE,
 483                                         "%s: %s:%d  skb_up = %p",
 484                                         ring->ndev->name, __func__,
 485                                         __LINE__, skb);
 486                                 memcpy(skb_up->data, skb->data, pkt_length);
 487
 488                                 vxge_re_pre_post(dtr, ring, rx_priv);
 489
 490                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 491                                         ringh);
 492                                 /* will netif_rx small SKB instead */
 493                                 skb = skb_up;
 494                                 skb_put(skb, pkt_length);
 495                         } else {
 496                                 vxge_re_pre_post(dtr, ring, rx_priv);
 497
 498                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 499                                 vxge_debug_rx(VXGE_ERR,
 500                                         "%s: vxge_rx_1b_compl: out of "
 501                                         "memory", dev->name);
 502                                 ring->stats.skb_alloc_fail++;
 503                                 break;
 504                         }
 505                 }
 506
 507                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 508                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 509                     ring->rx_csum && /* Offload Rx side CSUM */
 510                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 511                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 512                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 513                 else
 514                         skb_checksum_none_assert(skb);
 515
 516                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 517                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 518                  * if rss is disabled/enabled, so key off of that.
 519                  */
 520                 if (ext_info.rth_value)
 521                         skb->rxhash = ext_info.rth_value;
 522
 523                 vxge_rx_complete(ring, skb, ext_info.vlan,
 524                         pkt_length, &ext_info);
 525
 526                 ring->budget--;
 527                 ring->pkts_processed++;
 528                 if (!ring->budget)
 529                         break;
 530
 531         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 532                 &t_code) == VXGE_HW_OK);
 533
 534         if (first_dtr)
 535                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 536
 537         vxge_debug_entryexit(VXGE_TRACE,
 538                                 "%s:%d  Exiting...",
 539                                 __func__, __LINE__);
 540         return VXGE_HW_OK;
 541 }
 542
 543 /*
 544  * vxge_xmit_compl
 545  *
 546  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 547  * this function is called. It identifies the last TxD whose buffer was
 548  * freed and frees all skbs whose data have already DMA'ed into the NICs
 549  * internal memory.
 550  */
 551 static enum vxge_hw_status
 552 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 553                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 554                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 555 {
 556         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 557         struct sk_buff *skb, **done_skb = *skb_ptr;
 558         int pkt_cnt = 0;
 559
 560         vxge_debug_entryexit(VXGE_TRACE,
 561                 "%s:%d Entered....", __func__, __LINE__);
 562
 563         do {
 564                 int frg_cnt;
 565                 skb_frag_t *frag;
 566                 int i = 0, j;
 567                 struct vxge_tx_priv *txd_priv =
 568                         vxge_hw_fifo_txdl_private_get(dtr);
 569
 570                 skb = txd_priv->skb;
 571                 frg_cnt = skb_shinfo(skb)->nr_frags;
 572                 frag = &skb_shinfo(skb)->frags[0];
 573
 574                 vxge_debug_tx(VXGE_TRACE,
 575                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 576                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 577                                 __LINE__, fifo_hw, dtr, t_code);
 578                 /* check skb validity */
 579                 vxge_assert(skb);
 580                 vxge_debug_tx(VXGE_TRACE,
 581                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 582                         fifo->ndev->name, __func__, __LINE__,
 583                         skb, txd_priv, frg_cnt);
 584                 if (unlikely(t_code)) {
 585                         fifo->stats.tx_errors++;
 586                         vxge_debug_tx(VXGE_ERR,
 587                                 "%s: tx: dtr %p completed due to "
 588                                 "error t_code %01x", fifo->ndev->name,
 589                                 dtr, t_code);
 590                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 591                 }
 592
 593                 /*  for unfragmented skb */
 594                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 595                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 596
 597                 for (j = 0; j < frg_cnt; j++) {
 598                         pci_unmap_page(fifo->pdev,
 599                                         txd_priv->dma_buffers[i++],
 600                                         frag->size, PCI_DMA_TODEVICE);
 601                         frag += 1;
 602                 }
 603
 604                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 605
 606                 /* Updating the statistics block */
 607                 fifo->stats.tx_frms++;
 608                 fifo->stats.tx_bytes += skb->len;
 609
 610                 *done_skb++ = skb;
 611
 612                 if (--nr_skb <= 0) {
 613                         *more = 1;
 614                         break;
 615                 }
 616
 617                 pkt_cnt++;
 618                 if (pkt_cnt > fifo->indicate_max_pkts)
 619                         break;
 620
 621         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 622                                 &dtr, &t_code) == VXGE_HW_OK);
 623
 624         *skb_ptr = done_skb;
 625         if (netif_tx_queue_stopped(fifo->txq))
 626                 netif_tx_wake_queue(fifo->txq);
 627
 628         vxge_debug_entryexit(VXGE_TRACE,
 629                                 "%s: %s:%d  Exiting...",
 630                                 fifo->ndev->name, __func__, __LINE__);
 631         return VXGE_HW_OK;
 632 }
 633
 634 /* select a vpath to transmit the packet */
 635 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 636 {
 637         u16 queue_len, counter = 0;
 638         if (skb->protocol == htons(ETH_P_IP)) {
 639                 struct iphdr *ip;
 640                 struct tcphdr *th;
 641
 642                 ip = ip_hdr(skb);
 643
 644                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 645                         th = (struct tcphdr *)(((unsigned char *)ip) +
 646                                         ip->ihl*4);
 647
 648                         queue_len = vdev->no_of_vpath;
 649                         counter = (ntohs(th->source) +
 650                                 ntohs(th->dest)) &
 651                                 vdev->vpath_selector[queue_len - 1];
 652                         if (counter >= queue_len)
 653                                 counter = queue_len - 1;
 654                 }
 655         }
 656         return counter;
 657 }
 658
 659 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 660         struct vxge_vpath *vpath, u64 del_mac)
 661 {
 662         struct list_head *entry, *next;
 663         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 664                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 665                         return TRUE;
 666         }
 667         return FALSE;
 668 }
 669
 670 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 671 {
 672         struct macInfo mac_info;
 673         u8 *mac_address = NULL;
 674         u64 mac_addr = 0, vpath_vector = 0;
 675         int vpath_idx = 0;
 676         enum vxge_hw_status status = VXGE_HW_OK;
 677         struct vxge_vpath *vpath = NULL;
 678         struct __vxge_hw_device *hldev;
 679
 680         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
 681
 682         mac_address = (u8 *)&mac_addr;
 683         memcpy(mac_address, mac_header, ETH_ALEN);
 684
 685         /* Is this mac address already in the list? */
 686         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 687                 vpath = &vdev->vpaths[vpath_idx];
 688                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 689                         return vpath_idx;
 690         }
 691
 692         memset(&mac_info, 0, sizeof(struct macInfo));
 693         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 694
 695         /* Any vpath has room to add mac address to its da table? */
 696         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 697                 vpath = &vdev->vpaths[vpath_idx];
 698                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 699                         /* Add this mac address to this vpath */
 700                         mac_info.vpath_no = vpath_idx;
 701                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 702                         status = vxge_add_mac_addr(vdev, &mac_info);
 703                         if (status != VXGE_HW_OK)
 704                                 return -EPERM;
 705                         return vpath_idx;
 706                 }
 707         }
 708
 709         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 710         vpath_idx = 0;
 711         mac_info.vpath_no = vpath_idx;
 712         /* Is the first vpath already selected as catch-basin ? */
 713         vpath = &vdev->vpaths[vpath_idx];
 714         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 715                 /* Add this mac address to this vpath */
 716                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 717                         return -EPERM;
 718                 return vpath_idx;
 719         }
 720
 721         /* Select first vpath as catch-basin */
 722         vpath_vector = vxge_mBIT(vpath->device_id);
 723         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 724                                 vxge_hw_mgmt_reg_type_mrpcim,
 725                                 0,
 726                                 (ulong)offsetof(
 727                                         struct vxge_hw_mrpcim_reg,
 728                                         rts_mgr_cbasin_cfg),
 729                                 vpath_vector);
 730         if (status != VXGE_HW_OK) {
 731                 vxge_debug_tx(VXGE_ERR,
 732                         "%s: Unable to set the vpath-%d in catch-basin mode",
 733                         VXGE_DRIVER_NAME, vpath->device_id);
 734                 return -EPERM;
 735         }
 736
 737         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 738                 return -EPERM;
 739
 740         return vpath_idx;
 741 }
 742
 743 /**
 744  * vxge_xmit
 745  * @skb : the socket buffer containing the Tx data.
 746  * @dev : device pointer.
 747  *
 748  * This function is the Tx entry point of the driver. Neterion NIC supports
 749  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 750 */
 751 static netdev_tx_t
 752 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 753 {
 754         struct vxge_fifo *fifo = NULL;
 755         void *dtr_priv;
 756         void *dtr = NULL;
 757         struct vxgedev *vdev = NULL;
 758         enum vxge_hw_status status;
 759         int frg_cnt, first_frg_len;
 760         skb_frag_t *frag;
 761         int i = 0, j = 0, avail;
 762         u64 dma_pointer;
 763         struct vxge_tx_priv *txdl_priv = NULL;
 764         struct __vxge_hw_fifo *fifo_hw;
 765         int offload_type;
 766         int vpath_no = 0;
 767
 768         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 769                         dev->name, __func__, __LINE__);
 770
 771         /* A buffer with no data will be dropped */
 772         if (unlikely(skb->len <= 0)) {
 773                 vxge_debug_tx(VXGE_ERR,
 774                         "%s: Buffer has no data..", dev->name);
 775                 dev_kfree_skb(skb);
 776                 return NETDEV_TX_OK;
 777         }
 778
 779         vdev = (struct vxgedev *)netdev_priv(dev);
 780
 781         if (unlikely(!is_vxge_card_up(vdev))) {
 782                 vxge_debug_tx(VXGE_ERR,
 783                         "%s: vdev not initialized", dev->name);
 784                 dev_kfree_skb(skb);
 785                 return NETDEV_TX_OK;
 786         }
 787
 788         if (vdev->config.addr_learn_en) {
 789                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 790                 if (vpath_no == -EPERM) {
 791                         vxge_debug_tx(VXGE_ERR,
 792                                 "%s: Failed to store the mac address",
 793                                 dev->name);
 794                         dev_kfree_skb(skb);
 795                         return NETDEV_TX_OK;
 796                 }
 797         }
 798
 799         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 800                 vpath_no = skb_get_queue_mapping(skb);
 801         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 802                 vpath_no = vxge_get_vpath_no(vdev, skb);
 803
 804         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 805
 806         if (vpath_no >= vdev->no_of_vpath)
 807                 vpath_no = 0;
 808
 809         fifo = &vdev->vpaths[vpath_no].fifo;
 810         fifo_hw = fifo->handle;
 811
 812         if (netif_tx_queue_stopped(fifo->txq))
 813                 return NETDEV_TX_BUSY;
 814
 815         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 816         if (avail == 0) {
 817                 vxge_debug_tx(VXGE_ERR,
 818                         "%s: No free TXDs available", dev->name);
 819                 fifo->stats.txd_not_free++;
 820                 goto _exit0;
 821         }
 822
 823         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 824          * completion will resume the queue.
 825          */
 826         if (avail == 1)
 827                 netif_tx_stop_queue(fifo->txq);
 828
 829         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 830         if (unlikely(status != VXGE_HW_OK)) {
 831                 vxge_debug_tx(VXGE_ERR,
 832                    "%s: Out of descriptors .", dev->name);
 833                 fifo->stats.txd_out_of_desc++;
 834                 goto _exit0;
 835         }
 836
 837         vxge_debug_tx(VXGE_TRACE,
 838                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 839                 dev->name, __func__, __LINE__,
 840                 fifo_hw, dtr, dtr_priv);
 841
 842         if (vlan_tx_tag_present(skb)) {
 843                 u16 vlan_tag = vlan_tx_tag_get(skb);
 844                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 845         }
 846
 847         first_frg_len = skb_headlen(skb);
 848
 849         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 850                                 PCI_DMA_TODEVICE);
 851
 852         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 853                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 854                 fifo->stats.pci_map_fail++;
 855                 goto _exit0;
 856         }
 857
 858         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 859         txdl_priv->skb = skb;
 860         txdl_priv->dma_buffers[j] = dma_pointer;
 861
 862         frg_cnt = skb_shinfo(skb)->nr_frags;
 863         vxge_debug_tx(VXGE_TRACE,
 864                         "%s: %s:%d skb = %p txdl_priv = %p "
 865                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 866                         __func__, __LINE__, skb, txdl_priv,
 867                         frg_cnt, (unsigned long long)dma_pointer);
 868
 869         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 870                 first_frg_len);
 871
 872         frag = &skb_shinfo(skb)->frags[0];
 873         for (i = 0; i < frg_cnt; i++) {
 874                 /* ignore 0 length fragment */
 875                 if (!frag->size)
 876                         continue;
 877
 878                 dma_pointer = (u64) pci_map_page(fifo->pdev, frag->page,
 879                                 frag->page_offset, frag->size,
 880                                 PCI_DMA_TODEVICE);
 881
 882                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 883                         goto _exit2;
 884                 vxge_debug_tx(VXGE_TRACE,
 885                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 886                                 dev->name, __func__, __LINE__, i,
 887                                 (unsigned long long)dma_pointer);
 888
 889                 txdl_priv->dma_buffers[j] = dma_pointer;
 890                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 891                                         frag->size);
 892                 frag += 1;
 893         }
 894
 895         offload_type = vxge_offload_type(skb);
 896
 897         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 898                 int mss = vxge_tcp_mss(skb);
 899                 if (mss) {
 900                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 901                                 dev->name, __func__, __LINE__, mss);
 902                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 903                 } else {
 904                         vxge_assert(skb->len <=
 905                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 906                         vxge_assert(0);
 907                         goto _exit1;
 908                 }
 909         }
 910
 911         if (skb->ip_summed == CHECKSUM_PARTIAL)
 912                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 913                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 914                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 915                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 916
 917         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 918
 919         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 920                 dev->name, __func__, __LINE__);
 921         return NETDEV_TX_OK;
 922
 923 _exit2:
 924         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 925 _exit1:
 926         j = 0;
 927         frag = &skb_shinfo(skb)->frags[0];
 928
 929         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 930                         skb_headlen(skb), PCI_DMA_TODEVICE);
 931
 932         for (; j < i; j++) {
 933                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 934                         frag->size, PCI_DMA_TODEVICE);
 935                 frag += 1;
 936         }
 937
 938         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 939 _exit0:
 940         netif_tx_stop_queue(fifo->txq);
 941         dev_kfree_skb(skb);
 942
 943         return NETDEV_TX_OK;
 944 }
 945
 946 /*
 947  * vxge_rx_term
 948  *
 949  * Function will be called by hw function to abort all outstanding receive
 950  * descriptors.
 951  */
 952 static void
 953 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
 954 {
 955         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 956         struct vxge_rx_priv *rx_priv =
 957                 vxge_hw_ring_rxd_private_get(dtrh);
 958
 959         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 960                         ring->ndev->name, __func__, __LINE__);
 961         if (state != VXGE_HW_RXD_STATE_POSTED)
 962                 return;
 963
 964         pci_unmap_single(ring->pdev, rx_priv->data_dma,
 965                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 966
 967         dev_kfree_skb(rx_priv->skb);
 968         rx_priv->skb_data = NULL;
 969
 970         vxge_debug_entryexit(VXGE_TRACE,
 971                 "%s: %s:%d  Exiting...",
 972                 ring->ndev->name, __func__, __LINE__);
 973 }
 974
 975 /*
 976  * vxge_tx_term
 977  *
 978  * Function will be called to abort all outstanding tx descriptors
 979  */
 980 static void
 981 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
 982 {
 983         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 984         skb_frag_t *frag;
 985         int i = 0, j, frg_cnt;
 986         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
 987         struct sk_buff *skb = txd_priv->skb;
 988
 989         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
 990
 991         if (state != VXGE_HW_TXDL_STATE_POSTED)
 992                 return;
 993
 994         /* check skb validity */
 995         vxge_assert(skb);
 996         frg_cnt = skb_shinfo(skb)->nr_frags;
 997         frag = &skb_shinfo(skb)->frags[0];
 998
 999         /*  for unfragmented skb */
1000         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1001                 skb_headlen(skb), PCI_DMA_TODEVICE);
1002
1003         for (j = 0; j < frg_cnt; j++) {
1004                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1005                                frag->size, PCI_DMA_TODEVICE);
1006                 frag += 1;
1007         }
1008
1009         dev_kfree_skb(skb);
1010
1011         vxge_debug_entryexit(VXGE_TRACE,
1012                 "%s:%d  Exiting...", __func__, __LINE__);
1013 }
1014
1015 /**
1016  * vxge_set_multicast
1017  * @dev: pointer to the device structure
1018  *
1019  * Entry point for multicast address enable/disable
1020  * This function is a driver entry point which gets called by the kernel
1021  * whenever multicast addresses must be enabled/disabled. This also gets
1022  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1023  * determine, if multicast address must be enabled or if promiscuous mode
1024  * is to be disabled etc.
1025  */
1026 static void vxge_set_multicast(struct net_device *dev)
1027 {
1028         struct netdev_hw_addr *ha;
1029         struct vxgedev *vdev;
1030         int i, mcast_cnt = 0;
1031         struct __vxge_hw_device *hldev;
1032         struct vxge_vpath *vpath;
1033         enum vxge_hw_status status = VXGE_HW_OK;
1034         struct macInfo mac_info;
1035         int vpath_idx = 0;
1036         struct vxge_mac_addrs *mac_entry;
1037         struct list_head *list_head;
1038         struct list_head *entry, *next;
1039         u8 *mac_address = NULL;
1040
1041         vxge_debug_entryexit(VXGE_TRACE,
1042                 "%s:%d", __func__, __LINE__);
1043
1044         vdev = (struct vxgedev *)netdev_priv(dev);
1045         hldev = (struct __vxge_hw_device  *)vdev->devh;
1046
1047         if (unlikely(!is_vxge_card_up(vdev)))
1048                 return;
1049
1050         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1051                 for (i = 0; i < vdev->no_of_vpath; i++) {
1052                         vpath = &vdev->vpaths[i];
1053                         vxge_assert(vpath->is_open);
1054                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1055                         if (status != VXGE_HW_OK)
1056                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1057                                                 "multicast, status %d", status);
1058                         vdev->all_multi_flg = 1;
1059                 }
1060         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1061                 for (i = 0; i < vdev->no_of_vpath; i++) {
1062                         vpath = &vdev->vpaths[i];
1063                         vxge_assert(vpath->is_open);
1064                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1065                         if (status != VXGE_HW_OK)
1066                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1067                                                 "multicast, status %d", status);
1068                         vdev->all_multi_flg = 0;
1069                 }
1070         }
1071
1072
1073         if (!vdev->config.addr_learn_en) {
1074                 for (i = 0; i < vdev->no_of_vpath; i++) {
1075                         vpath = &vdev->vpaths[i];
1076                         vxge_assert(vpath->is_open);
1077
1078                         if (dev->flags & IFF_PROMISC)
1079                                 status = vxge_hw_vpath_promisc_enable(
1080                                         vpath->handle);
1081                         else
1082                                 status = vxge_hw_vpath_promisc_disable(
1083                                         vpath->handle);
1084                         if (status != VXGE_HW_OK)
1085                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1086                                         ", status %d", dev->flags&IFF_PROMISC ?
1087                                         "enable" : "disable", status);
1088                 }
1089         }
1090
1091         memset(&mac_info, 0, sizeof(struct macInfo));
1092         /* Update individual M_CAST address list */
1093         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1094                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1095                 list_head = &vdev->vpaths[0].mac_addr_list;
1096                 if ((netdev_mc_count(dev) +
1097                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1098                                 vdev->vpaths[0].max_mac_addr_cnt)
1099                         goto _set_all_mcast;
1100
1101                 /* Delete previous MC's */
1102                 for (i = 0; i < mcast_cnt; i++) {
1103                         list_for_each_safe(entry, next, list_head) {
1104                                 mac_entry = (struct vxge_mac_addrs *) entry;
1105                                 /* Copy the mac address to delete */
1106                                 mac_address = (u8 *)&mac_entry->macaddr;
1107                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1108
1109                                 /* Is this a multicast address */
1110                                 if (0x01 & mac_info.macaddr[0]) {
1111                                         for (vpath_idx = 0; vpath_idx <
1112                                                 vdev->no_of_vpath;
1113                                                 vpath_idx++) {
1114                                                 mac_info.vpath_no = vpath_idx;
1115                                                 status = vxge_del_mac_addr(
1116                                                                 vdev,
1117                                                                 &mac_info);
1118                                         }
1119                                 }
1120                         }
1121                 }
1122
1123                 /* Add new ones */
1124                 netdev_for_each_mc_addr(ha, dev) {
1125                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1126                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1127                                         vpath_idx++) {
1128                                 mac_info.vpath_no = vpath_idx;
1129                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1130                                 status = vxge_add_mac_addr(vdev, &mac_info);
1131                                 if (status != VXGE_HW_OK) {
1132                                         vxge_debug_init(VXGE_ERR,
1133                                                 "%s:%d Setting individual"
1134                                                 "multicast address failed",
1135                                                 __func__, __LINE__);
1136                                         goto _set_all_mcast;
1137                                 }
1138                         }
1139                 }
1140
1141                 return;
1142 _set_all_mcast:
1143                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1144                 /* Delete previous MC's */
1145                 for (i = 0; i < mcast_cnt; i++) {
1146                         list_for_each_safe(entry, next, list_head) {
1147                                 mac_entry = (struct vxge_mac_addrs *) entry;
1148                                 /* Copy the mac address to delete */
1149                                 mac_address = (u8 *)&mac_entry->macaddr;
1150                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1151
1152                                 /* Is this a multicast address */
1153                                 if (0x01 & mac_info.macaddr[0])
1154                                         break;
1155                         }
1156
1157                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1158                                         vpath_idx++) {
1159                                 mac_info.vpath_no = vpath_idx;
1160                                 status = vxge_del_mac_addr(vdev, &mac_info);
1161                         }
1162                 }
1163
1164                 /* Enable all multicast */
1165                 for (i = 0; i < vdev->no_of_vpath; i++) {
1166                         vpath = &vdev->vpaths[i];
1167                         vxge_assert(vpath->is_open);
1168
1169                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1170                         if (status != VXGE_HW_OK) {
1171                                 vxge_debug_init(VXGE_ERR,
1172                                         "%s:%d Enabling all multicasts failed",
1173                                          __func__, __LINE__);
1174                         }
1175                         vdev->all_multi_flg = 1;
1176                 }
1177                 dev->flags |= IFF_ALLMULTI;
1178         }
1179
1180         vxge_debug_entryexit(VXGE_TRACE,
1181                 "%s:%d  Exiting...", __func__, __LINE__);
1182 }
1183
1184 /**
1185  * vxge_set_mac_addr
1186  * @dev: pointer to the device structure
1187  *
1188  * Update entry "0" (default MAC addr)
1189  */
1190 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1191 {
1192         struct sockaddr *addr = p;
1193         struct vxgedev *vdev;
1194         struct __vxge_hw_device  *hldev;
1195         enum vxge_hw_status status = VXGE_HW_OK;
1196         struct macInfo mac_info_new, mac_info_old;
1197         int vpath_idx = 0;
1198
1199         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1200
1201         vdev = (struct vxgedev *)netdev_priv(dev);
1202         hldev = vdev->devh;
1203
1204         if (!is_valid_ether_addr(addr->sa_data))
1205                 return -EINVAL;
1206
1207         memset(&mac_info_new, 0, sizeof(struct macInfo));
1208         memset(&mac_info_old, 0, sizeof(struct macInfo));
1209
1210         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1211                 __func__, __LINE__);
1212
1213         /* Get the old address */
1214         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1215
1216         /* Copy the new address */
1217         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1218
1219         /* First delete the old mac address from all the vpaths
1220         as we can't specify the index while adding new mac address */
1221         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1222                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1223                 if (!vpath->is_open) {
1224                         /* This can happen when this interface is added/removed
1225                         to the bonding interface. Delete this station address
1226                         from the linked list */
1227                         vxge_mac_list_del(vpath, &mac_info_old);
1228
1229                         /* Add this new address to the linked list
1230                         for later restoring */
1231                         vxge_mac_list_add(vpath, &mac_info_new);
1232
1233                         continue;
1234                 }
1235                 /* Delete the station address */
1236                 mac_info_old.vpath_no = vpath_idx;
1237                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1238         }
1239
1240         if (unlikely(!is_vxge_card_up(vdev))) {
1241                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1242                 return VXGE_HW_OK;
1243         }
1244
1245         /* Set this mac address to all the vpaths */
1246         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1247                 mac_info_new.vpath_no = vpath_idx;
1248                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1249                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1250                 if (status != VXGE_HW_OK)
1251                         return -EINVAL;
1252         }
1253
1254         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1255
1256         return status;
1257 }
1258
1259 /*
1260  * vxge_vpath_intr_enable
1261  * @vdev: pointer to vdev
1262  * @vp_id: vpath for which to enable the interrupts
1263  *
1264  * Enables the interrupts for the vpath
1265 */
1266 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1267 {
1268         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1269         int msix_id = 0;
1270         int tim_msix_id[4] = {0, 1, 0, 0};
1271         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1272
1273         vxge_hw_vpath_intr_enable(vpath->handle);
1274
1275         if (vdev->config.intr_type == INTA)
1276                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1277         else {
1278                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1279                         alarm_msix_id);
1280
1281                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1282                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1283                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1284
1285                 /* enable the alarm vector */
1286                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1287                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1288                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1289         }
1290 }
1291
1292 /*
1293  * vxge_vpath_intr_disable
1294  * @vdev: pointer to vdev
1295  * @vp_id: vpath for which to disable the interrupts
1296  *
1297  * Disables the interrupts for the vpath
1298 */
1299 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1300 {
1301         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1302         int msix_id;
1303
1304         vxge_hw_vpath_intr_disable(vpath->handle);
1305
1306         if (vdev->config.intr_type == INTA)
1307                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1308         else {
1309                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1310                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1311                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1312
1313                 /* disable the alarm vector */
1314                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1315                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1316                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1317         }
1318 }
1319
1320 /*
1321  * vxge_reset_vpath
1322  * @vdev: pointer to vdev
1323  * @vp_id: vpath to reset
1324  *
1325  * Resets the vpath
1326 */
1327 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1328 {
1329         enum vxge_hw_status status = VXGE_HW_OK;
1330         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1331         int ret = 0;
1332
1333         /* check if device is down already */
1334         if (unlikely(!is_vxge_card_up(vdev)))
1335                 return 0;
1336
1337         /* is device reset already scheduled */
1338         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1339                 return 0;
1340
1341         if (vpath->handle) {
1342                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1343                         if (is_vxge_card_up(vdev) &&
1344                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1345                                         != VXGE_HW_OK) {
1346                                 vxge_debug_init(VXGE_ERR,
1347                                         "vxge_hw_vpath_recover_from_reset"
1348                                         "failed for vpath:%d", vp_id);
1349                                 return status;
1350                         }
1351                 } else {
1352                         vxge_debug_init(VXGE_ERR,
1353                                 "vxge_hw_vpath_reset failed for"
1354                                 "vpath:%d", vp_id);
1355                                 return status;
1356                 }
1357         } else
1358                 return VXGE_HW_FAIL;
1359
1360         vxge_restore_vpath_mac_addr(vpath);
1361         vxge_restore_vpath_vid_table(vpath);
1362
1363         /* Enable all broadcast */
1364         vxge_hw_vpath_bcast_enable(vpath->handle);
1365
1366         /* Enable all multicast */
1367         if (vdev->all_multi_flg) {
1368                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1369                 if (status != VXGE_HW_OK)
1370                         vxge_debug_init(VXGE_ERR,
1371                                 "%s:%d Enabling multicast failed",
1372                                 __func__, __LINE__);
1373         }
1374
1375         /* Enable the interrupts */
1376         vxge_vpath_intr_enable(vdev, vp_id);
1377
1378         smp_wmb();
1379
1380         /* Enable the flow of traffic through the vpath */
1381         vxge_hw_vpath_enable(vpath->handle);
1382
1383         smp_wmb();
1384         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1385         vpath->ring.last_status = VXGE_HW_OK;
1386
1387         /* Vpath reset done */
1388         clear_bit(vp_id, &vdev->vp_reset);
1389
1390         /* Start the vpath queue */
1391         if (netif_tx_queue_stopped(vpath->fifo.txq))
1392                 netif_tx_wake_queue(vpath->fifo.txq);
1393
1394         return ret;
1395 }
1396
1397 static int do_vxge_reset(struct vxgedev *vdev, int event)
1398 {
1399         enum vxge_hw_status status;
1400         int ret = 0, vp_id, i;
1401
1402         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1403
1404         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1405                 /* check if device is down already */
1406                 if (unlikely(!is_vxge_card_up(vdev)))
1407                         return 0;
1408
1409                 /* is reset already scheduled */
1410                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1411                         return 0;
1412         }
1413
1414         if (event == VXGE_LL_FULL_RESET) {
1415                 /* wait for all the vpath reset to complete */
1416                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1417                         while (test_bit(vp_id, &vdev->vp_reset))
1418                                 msleep(50);
1419                 }
1420
1421                 /* if execution mode is set to debug, don't reset the adapter */
1422                 if (unlikely(vdev->exec_mode)) {
1423                         vxge_debug_init(VXGE_ERR,
1424                                 "%s: execution mode is debug, returning..",
1425                                 vdev->ndev->name);
1426                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1427                         netif_tx_stop_all_queues(vdev->ndev);
1428                         return 0;
1429                 }
1430         }
1431
1432         if (event == VXGE_LL_FULL_RESET) {
1433                 vxge_hw_device_intr_disable(vdev->devh);
1434
1435                 switch (vdev->cric_err_event) {
1436                 case VXGE_HW_EVENT_UNKNOWN:
1437                         netif_tx_stop_all_queues(vdev->ndev);
1438                         vxge_debug_init(VXGE_ERR,
1439                                 "fatal: %s: Disabling device due to"
1440                                 "unknown error",
1441                                 vdev->ndev->name);
1442                         ret = -EPERM;
1443                         goto out;
1444                 case VXGE_HW_EVENT_RESET_START:
1445                         break;
1446                 case VXGE_HW_EVENT_RESET_COMPLETE:
1447                 case VXGE_HW_EVENT_LINK_DOWN:
1448                 case VXGE_HW_EVENT_LINK_UP:
1449                 case VXGE_HW_EVENT_ALARM_CLEARED:
1450                 case VXGE_HW_EVENT_ECCERR:
1451                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1452                         ret = -EPERM;
1453                         goto out;
1454                 case VXGE_HW_EVENT_FIFO_ERR:
1455                 case VXGE_HW_EVENT_VPATH_ERR:
1456                         break;
1457                 case VXGE_HW_EVENT_CRITICAL_ERR:
1458                         netif_tx_stop_all_queues(vdev->ndev);
1459                         vxge_debug_init(VXGE_ERR,
1460                                 "fatal: %s: Disabling device due to"
1461                                 "serious error",
1462                                 vdev->ndev->name);
1463                         /* SOP or device reset required */
1464                         /* This event is not currently used */
1465                         ret = -EPERM;
1466                         goto out;
1467                 case VXGE_HW_EVENT_SERR:
1468                         netif_tx_stop_all_queues(vdev->ndev);
1469                         vxge_debug_init(VXGE_ERR,
1470                                 "fatal: %s: Disabling device due to"
1471                                 "serious error",
1472                                 vdev->ndev->name);
1473                         ret = -EPERM;
1474                         goto out;
1475                 case VXGE_HW_EVENT_SRPCIM_SERR:
1476                 case VXGE_HW_EVENT_MRPCIM_SERR:
1477                         ret = -EPERM;
1478                         goto out;
1479                 case VXGE_HW_EVENT_SLOT_FREEZE:
1480                         netif_tx_stop_all_queues(vdev->ndev);
1481                         vxge_debug_init(VXGE_ERR,
1482                                 "fatal: %s: Disabling device due to"
1483                                 "slot freeze",
1484                                 vdev->ndev->name);
1485                         ret = -EPERM;
1486                         goto out;
1487                 default:
1488                         break;
1489
1490                 }
1491         }
1492
1493         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1494                 netif_tx_stop_all_queues(vdev->ndev);
1495
1496         if (event == VXGE_LL_FULL_RESET) {
1497                 status = vxge_reset_all_vpaths(vdev);
1498                 if (status != VXGE_HW_OK) {
1499                         vxge_debug_init(VXGE_ERR,
1500                                 "fatal: %s: can not reset vpaths",
1501                                 vdev->ndev->name);
1502                         ret = -EPERM;
1503                         goto out;
1504                 }
1505         }
1506
1507         if (event == VXGE_LL_COMPL_RESET) {
1508                 for (i = 0; i < vdev->no_of_vpath; i++)
1509                         if (vdev->vpaths[i].handle) {
1510                                 if (vxge_hw_vpath_recover_from_reset(
1511                                         vdev->vpaths[i].handle)
1512                                                 != VXGE_HW_OK) {
1513                                         vxge_debug_init(VXGE_ERR,
1514                                                 "vxge_hw_vpath_recover_"
1515                                                 "from_reset failed for vpath: "
1516                                                 "%d", i);
1517                                         ret = -EPERM;
1518                                         goto out;
1519                                 }
1520                                 } else {
1521                                         vxge_debug_init(VXGE_ERR,
1522                                         "vxge_hw_vpath_reset failed for "
1523                                                 "vpath:%d", i);
1524                                         ret = -EPERM;
1525                                         goto out;
1526                                 }
1527         }
1528
1529         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1530                 /* Reprogram the DA table with populated mac addresses */
1531                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1532                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1533                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1534                 }
1535
1536                 /* enable vpath interrupts */
1537                 for (i = 0; i < vdev->no_of_vpath; i++)
1538                         vxge_vpath_intr_enable(vdev, i);
1539
1540                 vxge_hw_device_intr_enable(vdev->devh);
1541
1542                 smp_wmb();
1543
1544                 /* Indicate card up */
1545                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1546
1547                 /* Get the traffic to flow through the vpaths */
1548                 for (i = 0; i < vdev->no_of_vpath; i++) {
1549                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1550                         smp_wmb();
1551                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1552                 }
1553
1554                 netif_tx_wake_all_queues(vdev->ndev);
1555         }
1556
1557 out:
1558         vxge_debug_entryexit(VXGE_TRACE,
1559                 "%s:%d  Exiting...", __func__, __LINE__);
1560
1561         /* Indicate reset done */
1562         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1563                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1564         return ret;
1565 }
1566
1567 /*
1568  * vxge_reset
1569  * @vdev: pointer to ll device
1570  *
1571  * driver may reset the chip on events of serr, eccerr, etc
1572  */
1573 static int vxge_reset(struct vxgedev *vdev)
1574 {
1575         return do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1576 }
1577
1578 /**
1579  * vxge_poll - Receive handler when Receive Polling is used.
1580  * @dev: pointer to the device structure.
1581  * @budget: Number of packets budgeted to be processed in this iteration.
1582  *
1583  * This function comes into picture only if Receive side is being handled
1584  * through polling (called NAPI in linux). It mostly does what the normal
1585  * Rx interrupt handler does in terms of descriptor and packet processing
1586  * but not in an interrupt context. Also it will process a specified number
1587  * of packets at most in one iteration. This value is passed down by the
1588  * kernel as the function argument 'budget'.
1589  */
1590 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1591 {
1592         struct vxge_ring *ring =
1593                 container_of(napi, struct vxge_ring, napi);
1594         int budget_org = budget;
1595         ring->budget = budget;
1596
1597         vxge_hw_vpath_poll_rx(ring->handle);
1598
1599         if (ring->pkts_processed < budget_org) {
1600                 napi_complete(napi);
1601                 /* Re enable the Rx interrupts for the vpath */
1602                 vxge_hw_channel_msix_unmask(
1603                                 (struct __vxge_hw_channel *)ring->handle,
1604                                 ring->rx_vector_no);
1605         }
1606
1607         return ring->pkts_processed;
1608 }
1609
1610 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1611 {
1612         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1613         int pkts_processed = 0;
1614         int i;
1615         int budget_org = budget;
1616         struct vxge_ring *ring;
1617
1618         struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
1619                 pci_get_drvdata(vdev->pdev);
1620
1621         for (i = 0; i < vdev->no_of_vpath; i++) {
1622                 ring = &vdev->vpaths[i].ring;
1623                 ring->budget = budget;
1624                 vxge_hw_vpath_poll_rx(ring->handle);
1625                 pkts_processed += ring->pkts_processed;
1626                 budget -= ring->pkts_processed;
1627                 if (budget <= 0)
1628                         break;
1629         }
1630
1631         VXGE_COMPLETE_ALL_TX(vdev);
1632
1633         if (pkts_processed < budget_org) {
1634                 napi_complete(napi);
1635                 /* Re enable the Rx interrupts for the ring */
1636                 vxge_hw_device_unmask_all(hldev);
1637                 vxge_hw_device_flush_io(hldev);
1638         }
1639
1640         return pkts_processed;
1641 }
1642
1643 #ifdef CONFIG_NET_POLL_CONTROLLER
1644 /**
1645  * vxge_netpoll - netpoll event handler entry point
1646  * @dev : pointer to the device structure.
1647  * Description:
1648  *      This function will be called by upper layer to check for events on the
1649  * interface in situations where interrupts are disabled. It is used for
1650  * specific in-kernel networking tasks, such as remote consoles and kernel
1651  * debugging over the network (example netdump in RedHat).
1652  */
1653 static void vxge_netpoll(struct net_device *dev)
1654 {
1655         struct __vxge_hw_device  *hldev;
1656         struct vxgedev *vdev;
1657
1658         vdev = (struct vxgedev *)netdev_priv(dev);
1659         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1660
1661         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1662
1663         if (pci_channel_offline(vdev->pdev))
1664                 return;
1665
1666         disable_irq(dev->irq);
1667         vxge_hw_device_clear_tx_rx(hldev);
1668
1669         vxge_hw_device_clear_tx_rx(hldev);
1670         VXGE_COMPLETE_ALL_RX(vdev);
1671         VXGE_COMPLETE_ALL_TX(vdev);
1672
1673         enable_irq(dev->irq);
1674
1675         vxge_debug_entryexit(VXGE_TRACE,
1676                 "%s:%d  Exiting...", __func__, __LINE__);
1677 }
1678 #endif
1679
1680 /* RTH configuration */
1681 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1682 {
1683         enum vxge_hw_status status = VXGE_HW_OK;
1684         struct vxge_hw_rth_hash_types hash_types;
1685         u8 itable[256] = {0}; /* indirection table */
1686         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1687         int index;
1688
1689         /*
1690          * Filling
1691          *      - itable with bucket numbers
1692          *      - mtable with bucket-to-vpath mapping
1693          */
1694         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1695                 itable[index] = index;
1696                 mtable[index] = index % vdev->no_of_vpath;
1697         }
1698
1699         /* set indirection table, bucket-to-vpath mapping */
1700         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1701                                                 vdev->no_of_vpath,
1702                                                 mtable, itable,
1703                                                 vdev->config.rth_bkt_sz);
1704         if (status != VXGE_HW_OK) {
1705                 vxge_debug_init(VXGE_ERR,
1706                         "RTH indirection table configuration failed "
1707                         "for vpath:%d", vdev->vpaths[0].device_id);
1708                 return status;
1709         }
1710
1711         /* Fill RTH hash types */
1712         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1713         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1714         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1715         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1716         hash_types.hash_type_tcpipv6ex_en =
1717                                         vdev->config.rth_hash_type_tcpipv6ex;
1718         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1719
1720         /*
1721          * Because the itable_set() method uses the active_table field
1722          * for the target virtual path the RTH config should be updated
1723          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1724          * when steering frames.
1725          */
1726          for (index = 0; index < vdev->no_of_vpath; index++) {
1727                 status = vxge_hw_vpath_rts_rth_set(
1728                                 vdev->vpaths[index].handle,
1729                                 vdev->config.rth_algorithm,
1730                                 &hash_types,
1731                                 vdev->config.rth_bkt_sz);
1732
1733                  if (status != VXGE_HW_OK) {
1734                         vxge_debug_init(VXGE_ERR,
1735                                 "RTH configuration failed for vpath:%d",
1736                                 vdev->vpaths[index].device_id);
1737                         return status;
1738                  }
1739          }
1740
1741         return status;
1742 }
1743
1744 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1745 {
1746         struct vxge_mac_addrs *new_mac_entry;
1747         u8 *mac_address = NULL;
1748
1749         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1750                 return TRUE;
1751
1752         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1753         if (!new_mac_entry) {
1754                 vxge_debug_mem(VXGE_ERR,
1755                         "%s: memory allocation failed",
1756                         VXGE_DRIVER_NAME);
1757                 return FALSE;
1758         }
1759
1760         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1761
1762         /* Copy the new mac address to the list */
1763         mac_address = (u8 *)&new_mac_entry->macaddr;
1764         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1765
1766         new_mac_entry->state = mac->state;
1767         vpath->mac_addr_cnt++;
1768
1769         /* Is this a multicast address */
1770         if (0x01 & mac->macaddr[0])
1771                 vpath->mcast_addr_cnt++;
1772
1773         return TRUE;
1774 }
1775
1776 /* Add a mac address to DA table */
1777 static enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev,
1778                                              struct macInfo *mac)
1779 {
1780         enum vxge_hw_status status = VXGE_HW_OK;
1781         struct vxge_vpath *vpath;
1782         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1783
1784         if (0x01 & mac->macaddr[0]) /* multicast address */
1785                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1786         else
1787                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1788
1789         vpath = &vdev->vpaths[mac->vpath_no];
1790         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1791                                                 mac->macmask, duplicate_mode);
1792         if (status != VXGE_HW_OK) {
1793                 vxge_debug_init(VXGE_ERR,
1794                         "DA config add entry failed for vpath:%d",
1795                         vpath->device_id);
1796         } else
1797                 if (FALSE == vxge_mac_list_add(vpath, mac))
1798                         status = -EPERM;
1799
1800         return status;
1801 }
1802
1803 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1804 {
1805         struct list_head *entry, *next;
1806         u64 del_mac = 0;
1807         u8 *mac_address = (u8 *) (&del_mac);
1808
1809         /* Copy the mac address to delete from the list */
1810         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1811
1812         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1813                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1814                         list_del(entry);
1815                         kfree((struct vxge_mac_addrs *)entry);
1816                         vpath->mac_addr_cnt--;
1817
1818                         /* Is this a multicast address */
1819                         if (0x01 & mac->macaddr[0])
1820                                 vpath->mcast_addr_cnt--;
1821                         return TRUE;
1822                 }
1823         }
1824
1825         return FALSE;
1826 }
1827 /* delete a mac address from DA table */
1828 static enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev,
1829                                              struct macInfo *mac)
1830 {
1831         enum vxge_hw_status status = VXGE_HW_OK;
1832         struct vxge_vpath *vpath;
1833
1834         vpath = &vdev->vpaths[mac->vpath_no];
1835         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1836                                                 mac->macmask);
1837         if (status != VXGE_HW_OK) {
1838                 vxge_debug_init(VXGE_ERR,
1839                         "DA config delete entry failed for vpath:%d",
1840                         vpath->device_id);
1841         } else
1842                 vxge_mac_list_del(vpath, mac);
1843         return status;
1844 }
1845
1846 /* list all mac addresses from DA table */
1847 enum vxge_hw_status
1848 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1849                                         struct macInfo *mac)
1850 {
1851         enum vxge_hw_status status = VXGE_HW_OK;
1852         unsigned char macmask[ETH_ALEN];
1853         unsigned char macaddr[ETH_ALEN];
1854
1855         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1856                                 macaddr, macmask);
1857         if (status != VXGE_HW_OK) {
1858                 vxge_debug_init(VXGE_ERR,
1859                         "DA config list entry failed for vpath:%d",
1860                         vpath->device_id);
1861                 return status;
1862         }
1863
1864         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1865
1866                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1867                                 macaddr, macmask);
1868                 if (status != VXGE_HW_OK)
1869                         break;
1870         }
1871
1872         return status;
1873 }
1874
1875 /* Store all vlan ids from the list to the vid table */
1876 static enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1877 {
1878         enum vxge_hw_status status = VXGE_HW_OK;
1879         struct vxgedev *vdev = vpath->vdev;
1880         u16 vid;
1881
1882         if (vdev->vlgrp && vpath->is_open) {
1883
1884                 for (vid = 0; vid < VLAN_N_VID; vid++) {
1885                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1886                                 continue;
1887                         /* Add these vlan to the vid table */
1888                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1889                 }
1890         }
1891
1892         return status;
1893 }
1894
1895 /* Store all mac addresses from the list to the DA table */
1896 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1897 {
1898         enum vxge_hw_status status = VXGE_HW_OK;
1899         struct macInfo mac_info;
1900         u8 *mac_address = NULL;
1901         struct list_head *entry, *next;
1902
1903         memset(&mac_info, 0, sizeof(struct macInfo));
1904
1905         if (vpath->is_open) {
1906
1907                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1908                         mac_address =
1909                                 (u8 *)&
1910                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1911                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1912                         ((struct vxge_mac_addrs *)entry)->state =
1913                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1914                         /* does this mac address already exist in da table? */
1915                         status = vxge_search_mac_addr_in_da_table(vpath,
1916                                 &mac_info);
1917                         if (status != VXGE_HW_OK) {
1918                                 /* Add this mac address to the DA table */
1919                                 status = vxge_hw_vpath_mac_addr_add(
1920                                         vpath->handle, mac_info.macaddr,
1921                                         mac_info.macmask,
1922                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1923                                 if (status != VXGE_HW_OK) {
1924                                         vxge_debug_init(VXGE_ERR,
1925                                             "DA add entry failed for vpath:%d",
1926                                             vpath->device_id);
1927                                         ((struct vxge_mac_addrs *)entry)->state
1928                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1929                                 }
1930                         }
1931                 }
1932         }
1933
1934         return status;
1935 }
1936
1937 /* reset vpaths */
1938 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1939 {
1940         enum vxge_hw_status status = VXGE_HW_OK;
1941         struct vxge_vpath *vpath;
1942         int i;
1943
1944         for (i = 0; i < vdev->no_of_vpath; i++) {
1945                 vpath = &vdev->vpaths[i];
1946                 if (vpath->handle) {
1947                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1948                                 if (is_vxge_card_up(vdev) &&
1949                                         vxge_hw_vpath_recover_from_reset(
1950                                                 vpath->handle) != VXGE_HW_OK) {
1951                                         vxge_debug_init(VXGE_ERR,
1952                                                 "vxge_hw_vpath_recover_"
1953                                                 "from_reset failed for vpath: "
1954                                                 "%d", i);
1955                                         return status;
1956                                 }
1957                         } else {
1958                                 vxge_debug_init(VXGE_ERR,
1959                                         "vxge_hw_vpath_reset failed for "
1960                                         "vpath:%d", i);
1961                                         return status;
1962                         }
1963                 }
1964         }
1965
1966         return status;
1967 }
1968
1969 /* close vpaths */
1970 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
1971 {
1972         struct vxge_vpath *vpath;
1973         int i;
1974
1975         for (i = index; i < vdev->no_of_vpath; i++) {
1976                 vpath = &vdev->vpaths[i];
1977
1978                 if (vpath->handle && vpath->is_open) {
1979                         vxge_hw_vpath_close(vpath->handle);
1980                         vdev->stats.vpaths_open--;
1981                 }
1982                 vpath->is_open = 0;
1983                 vpath->handle = NULL;
1984         }
1985 }
1986
1987 /* open vpaths */
1988 static int vxge_open_vpaths(struct vxgedev *vdev)
1989 {
1990         struct vxge_hw_vpath_attr attr;
1991         enum vxge_hw_status status;
1992         struct vxge_vpath *vpath;
1993         u32 vp_id = 0;
1994         int i;
1995
1996         for (i = 0; i < vdev->no_of_vpath; i++) {
1997                 vpath = &vdev->vpaths[i];
1998
1999                 vxge_assert(vpath->is_configured);
2000                 attr.vp_id = vpath->device_id;
2001                 attr.fifo_attr.callback = vxge_xmit_compl;
2002                 attr.fifo_attr.txdl_term = vxge_tx_term;
2003                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2004                 attr.fifo_attr.userdata = &vpath->fifo;
2005
2006                 attr.ring_attr.callback = vxge_rx_1b_compl;
2007                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2008                 attr.ring_attr.rxd_term = vxge_rx_term;
2009                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2010                 attr.ring_attr.userdata = &vpath->ring;
2011
2012                 vpath->ring.ndev = vdev->ndev;
2013                 vpath->ring.pdev = vdev->pdev;
2014                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2015                 if (status == VXGE_HW_OK) {
2016                         vpath->fifo.handle =
2017                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2018                         vpath->ring.handle =
2019                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2020                         vpath->fifo.tx_steering_type =
2021                                 vdev->config.tx_steering_type;
2022                         vpath->fifo.ndev = vdev->ndev;
2023                         vpath->fifo.pdev = vdev->pdev;
2024                         if (vdev->config.tx_steering_type)
2025                                 vpath->fifo.txq =
2026                                         netdev_get_tx_queue(vdev->ndev, i);
2027                         else
2028                                 vpath->fifo.txq =
2029                                         netdev_get_tx_queue(vdev->ndev, 0);
2030                         vpath->fifo.indicate_max_pkts =
2031                                 vdev->config.fifo_indicate_max_pkts;
2032                         vpath->ring.rx_vector_no = 0;
2033                         vpath->ring.rx_csum = vdev->rx_csum;
2034                         vpath->is_open = 1;
2035                         vdev->vp_handles[i] = vpath->handle;
2036                         vpath->ring.gro_enable = vdev->config.gro_enable;
2037                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2038                         vdev->stats.vpaths_open++;
2039                 } else {
2040                         vdev->stats.vpath_open_fail++;
2041                         vxge_debug_init(VXGE_ERR,
2042                                 "%s: vpath: %d failed to open "
2043                                 "with status: %d",
2044                             vdev->ndev->name, vpath->device_id,
2045                                 status);
2046                         vxge_close_vpaths(vdev, 0);
2047                         return -EPERM;
2048                 }
2049
2050                 vp_id = vpath->handle->vpath->vp_id;
2051                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2052         }
2053         return VXGE_HW_OK;
2054 }
2055
2056 /*
2057  *  vxge_isr_napi
2058  *  @irq: the irq of the device.
2059  *  @dev_id: a void pointer to the hldev structure of the Titan device
2060  *  @ptregs: pointer to the registers pushed on the stack.
2061  *
2062  *  This function is the ISR handler of the device when napi is enabled. It
2063  *  identifies the reason for the interrupt and calls the relevant service
2064  *  routines.
2065  */
2066 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2067 {
2068         struct net_device *dev;
2069         struct __vxge_hw_device *hldev;
2070         u64 reason;
2071         enum vxge_hw_status status;
2072         struct vxgedev *vdev = (struct vxgedev *) dev_id;;
2073
2074         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2075
2076         dev = vdev->ndev;
2077         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2078
2079         if (pci_channel_offline(vdev->pdev))
2080                 return IRQ_NONE;
2081
2082         if (unlikely(!is_vxge_card_up(vdev)))
2083                 return IRQ_NONE;
2084
2085         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2086                         &reason);
2087         if (status == VXGE_HW_OK) {
2088                 vxge_hw_device_mask_all(hldev);
2089
2090                 if (reason &
2091                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2092                         vdev->vpaths_deployed >>
2093                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2094
2095                         vxge_hw_device_clear_tx_rx(hldev);
2096                         napi_schedule(&vdev->napi);
2097                         vxge_debug_intr(VXGE_TRACE,
2098                                 "%s:%d  Exiting...", __func__, __LINE__);
2099                         return IRQ_HANDLED;
2100                 } else
2101                         vxge_hw_device_unmask_all(hldev);
2102         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2103                 (status == VXGE_HW_ERR_CRITICAL) ||
2104                 (status == VXGE_HW_ERR_FIFO))) {
2105                 vxge_hw_device_mask_all(hldev);
2106                 vxge_hw_device_flush_io(hldev);
2107                 return IRQ_HANDLED;
2108         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2109                 return IRQ_HANDLED;
2110
2111         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2112         return IRQ_NONE;
2113 }
2114
2115 #ifdef CONFIG_PCI_MSI
2116
2117 static irqreturn_t
2118 vxge_tx_msix_handle(int irq, void *dev_id)
2119 {
2120         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2121
2122         VXGE_COMPLETE_VPATH_TX(fifo);
2123
2124         return IRQ_HANDLED;
2125 }
2126
2127 static irqreturn_t
2128 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2129 {
2130         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2131
2132         /* MSIX_IDX for Rx is 1 */
2133         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2134                                         ring->rx_vector_no);
2135
2136         napi_schedule(&ring->napi);
2137         return IRQ_HANDLED;
2138 }
2139
2140 static irqreturn_t
2141 vxge_alarm_msix_handle(int irq, void *dev_id)
2142 {
2143         int i;
2144         enum vxge_hw_status status;
2145         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2146         struct vxgedev *vdev = vpath->vdev;
2147         int msix_id = (vpath->handle->vpath->vp_id *
2148                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2149
2150         for (i = 0; i < vdev->no_of_vpath; i++) {
2151                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2152
2153                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2154                         vdev->exec_mode);
2155                 if (status == VXGE_HW_OK) {
2156
2157                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2158                                         msix_id);
2159                         continue;
2160                 }
2161                 vxge_debug_intr(VXGE_ERR,
2162                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2163                         VXGE_DRIVER_NAME, status);
2164         }
2165         return IRQ_HANDLED;
2166 }
2167
2168 static int vxge_alloc_msix(struct vxgedev *vdev)
2169 {
2170         int j, i, ret = 0;
2171         int msix_intr_vect = 0, temp;
2172         vdev->intr_cnt = 0;
2173
2174 start:
2175         /* Tx/Rx MSIX Vectors count */
2176         vdev->intr_cnt = vdev->no_of_vpath * 2;
2177
2178         /* Alarm MSIX Vectors count */
2179         vdev->intr_cnt++;
2180
2181         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2182                                 GFP_KERNEL);
2183         if (!vdev->entries) {
2184                 vxge_debug_init(VXGE_ERR,
2185                         "%s: memory allocation failed",
2186                         VXGE_DRIVER_NAME);
2187                 ret = -ENOMEM;
2188                 goto alloc_entries_failed;
2189         }
2190
2191         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2192                                      sizeof(struct vxge_msix_entry),
2193                                      GFP_KERNEL);
2194         if (!vdev->vxge_entries) {
2195                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2196                         VXGE_DRIVER_NAME);
2197                 ret = -ENOMEM;
2198                 goto alloc_vxge_entries_failed;
2199         }
2200
2201         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2202
2203                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2204
2205                 /* Initialize the fifo vector */
2206                 vdev->entries[j].entry = msix_intr_vect;
2207                 vdev->vxge_entries[j].entry = msix_intr_vect;
2208                 vdev->vxge_entries[j].in_use = 0;
2209                 j++;
2210
2211                 /* Initialize the ring vector */
2212                 vdev->entries[j].entry = msix_intr_vect + 1;
2213                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2214                 vdev->vxge_entries[j].in_use = 0;
2215                 j++;
2216         }
2217
2218         /* Initialize the alarm vector */
2219         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2220         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2221         vdev->vxge_entries[j].in_use = 0;
2222
2223         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2224         if (ret > 0) {
2225                 vxge_debug_init(VXGE_ERR,
2226                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2227                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2228                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2229                         ret = -ENODEV;
2230                         goto enable_msix_failed;
2231                 }
2232
2233                 kfree(vdev->entries);
2234                 kfree(vdev->vxge_entries);
2235                 vdev->entries = NULL;
2236                 vdev->vxge_entries = NULL;
2237                 /* Try with less no of vector by reducing no of vpaths count */
2238                 temp = (ret - 1)/2;
2239                 vxge_close_vpaths(vdev, temp);
2240                 vdev->no_of_vpath = temp;
2241                 goto start;
2242         } else if (ret < 0) {
2243                 ret = -ENODEV;
2244                 goto enable_msix_failed;
2245         }
2246         return 0;
2247
2248 enable_msix_failed:
2249         kfree(vdev->vxge_entries);
2250 alloc_vxge_entries_failed:
2251         kfree(vdev->entries);
2252 alloc_entries_failed:
2253         return ret;
2254 }
2255
2256 static int vxge_enable_msix(struct vxgedev *vdev)
2257 {
2258
2259         int i, ret = 0;
2260         /* 0 - Tx, 1 - Rx  */
2261         int tim_msix_id[4] = {0, 1, 0, 0};
2262
2263         vdev->intr_cnt = 0;
2264
2265         /* allocate msix vectors */
2266         ret = vxge_alloc_msix(vdev);
2267         if (!ret) {
2268                 for (i = 0; i < vdev->no_of_vpath; i++) {
2269                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2270
2271                         /* If fifo or ring are not enabled, the MSIX vector for
2272                          * it should be set to 0.
2273                          */
2274                         vpath->ring.rx_vector_no = (vpath->device_id *
2275                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2276
2277                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2278                                                VXGE_ALARM_MSIX_ID);
2279                 }
2280         }
2281
2282         return ret;
2283 }
2284
2285 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2286 {
2287         int intr_cnt;
2288
2289         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2290                 intr_cnt++) {
2291                 if (vdev->vxge_entries[intr_cnt].in_use) {
2292                         synchronize_irq(vdev->entries[intr_cnt].vector);
2293                         free_irq(vdev->entries[intr_cnt].vector,
2294                                 vdev->vxge_entries[intr_cnt].arg);
2295                         vdev->vxge_entries[intr_cnt].in_use = 0;
2296                 }
2297         }
2298
2299         kfree(vdev->entries);
2300         kfree(vdev->vxge_entries);
2301         vdev->entries = NULL;
2302         vdev->vxge_entries = NULL;
2303
2304         if (vdev->config.intr_type == MSI_X)
2305                 pci_disable_msix(vdev->pdev);
2306 }
2307 #endif
2308
2309 static void vxge_rem_isr(struct vxgedev *vdev)
2310 {
2311         struct __vxge_hw_device  *hldev;
2312         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
2313
2314 #ifdef CONFIG_PCI_MSI
2315         if (vdev->config.intr_type == MSI_X) {
2316                 vxge_rem_msix_isr(vdev);
2317         } else
2318 #endif
2319         if (vdev->config.intr_type == INTA) {
2320                         synchronize_irq(vdev->pdev->irq);
2321                         free_irq(vdev->pdev->irq, vdev);
2322         }
2323 }
2324
2325 static int vxge_add_isr(struct vxgedev *vdev)
2326 {
2327         int ret = 0;
2328 #ifdef CONFIG_PCI_MSI
2329         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2330         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2331
2332         if (vdev->config.intr_type == MSI_X)
2333                 ret = vxge_enable_msix(vdev);
2334
2335         if (ret) {
2336                 vxge_debug_init(VXGE_ERR,
2337                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2338                 vxge_debug_init(VXGE_ERR,
2339                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2340                 vdev->config.intr_type = INTA;
2341         }
2342
2343         if (vdev->config.intr_type == MSI_X) {
2344                 for (intr_idx = 0;
2345                      intr_idx < (vdev->no_of_vpath *
2346                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2347
2348                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2349                         irq_req = 0;
2350
2351                         switch (msix_idx) {
2352                         case 0:
2353                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2354                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2355                                         vdev->ndev->name,
2356                                         vdev->entries[intr_cnt].entry,
2357                                         pci_fun, vp_idx);
2358                                 ret = request_irq(
2359                                     vdev->entries[intr_cnt].vector,
2360                                         vxge_tx_msix_handle, 0,
2361                                         vdev->desc[intr_cnt],
2362                                         &vdev->vpaths[vp_idx].fifo);
2363                                         vdev->vxge_entries[intr_cnt].arg =
2364                                                 &vdev->vpaths[vp_idx].fifo;
2365                                 irq_req = 1;
2366                                 break;
2367                         case 1:
2368                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2369                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2370                                         vdev->ndev->name,
2371                                         vdev->entries[intr_cnt].entry,
2372                                         pci_fun, vp_idx);
2373                                 ret = request_irq(
2374                                     vdev->entries[intr_cnt].vector,
2375                                         vxge_rx_msix_napi_handle,
2376                                         0,
2377                                         vdev->desc[intr_cnt],
2378                                         &vdev->vpaths[vp_idx].ring);
2379                                         vdev->vxge_entries[intr_cnt].arg =
2380                                                 &vdev->vpaths[vp_idx].ring;
2381                                 irq_req = 1;
2382                                 break;
2383                         }
2384
2385                         if (ret) {
2386                                 vxge_debug_init(VXGE_ERR,
2387                                         "%s: MSIX - %d  Registration failed",
2388                                         vdev->ndev->name, intr_cnt);
2389                                 vxge_rem_msix_isr(vdev);
2390                                 vdev->config.intr_type = INTA;
2391                                 vxge_debug_init(VXGE_ERR,
2392                                         "%s: Defaulting to INTA"
2393                                         , vdev->ndev->name);
2394                                         goto INTA_MODE;
2395                         }
2396
2397                         if (irq_req) {
2398                                 /* We requested for this msix interrupt */
2399                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2400                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2401                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2402                                 vxge_hw_vpath_msix_unmask(
2403                                         vdev->vpaths[vp_idx].handle,
2404                                         msix_idx);
2405                                 intr_cnt++;
2406                         }
2407
2408                         /* Point to next vpath handler */
2409                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2410                             (vp_idx < (vdev->no_of_vpath - 1)))
2411                                 vp_idx++;
2412                 }
2413
2414                 intr_cnt = vdev->no_of_vpath * 2;
2415                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2416                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2417                         vdev->ndev->name,
2418                         vdev->entries[intr_cnt].entry,
2419                         pci_fun);
2420                 /* For Alarm interrupts */
2421                 ret = request_irq(vdev->entries[intr_cnt].vector,
2422                                         vxge_alarm_msix_handle, 0,
2423                                         vdev->desc[intr_cnt],
2424                                         &vdev->vpaths[0]);
2425                 if (ret) {
2426                         vxge_debug_init(VXGE_ERR,
2427                                 "%s: MSIX - %d Registration failed",
2428                                 vdev->ndev->name, intr_cnt);
2429                         vxge_rem_msix_isr(vdev);
2430                         vdev->config.intr_type = INTA;
2431                         vxge_debug_init(VXGE_ERR,
2432                                 "%s: Defaulting to INTA",
2433                                 vdev->ndev->name);
2434                                 goto INTA_MODE;
2435                 }
2436
2437                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2438                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2439                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2440                                         msix_idx);
2441                 vdev->vxge_entries[intr_cnt].in_use = 1;
2442                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2443         }
2444 INTA_MODE:
2445 #endif
2446
2447         if (vdev->config.intr_type == INTA) {
2448                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2449                         "%s:vxge:INTA", vdev->ndev->name);
2450                 vxge_hw_device_set_intr_type(vdev->devh,
2451                         VXGE_HW_INTR_MODE_IRQLINE);
2452                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2453                         vdev->vpaths[0].device_id);
2454                 ret = request_irq((int) vdev->pdev->irq,
2455                         vxge_isr_napi,
2456                         IRQF_SHARED, vdev->desc[0], vdev);
2457                 if (ret) {
2458                         vxge_debug_init(VXGE_ERR,
2459                                 "%s %s-%d: ISR registration failed",
2460                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2461                         return -ENODEV;
2462                 }
2463                 vxge_debug_init(VXGE_TRACE,
2464                         "new %s-%d line allocated",
2465                         "IRQ", vdev->pdev->irq);
2466         }
2467
2468         return VXGE_HW_OK;
2469 }
2470
2471 static void vxge_poll_vp_reset(unsigned long data)
2472 {
2473         struct vxgedev *vdev = (struct vxgedev *)data;
2474         int i, j = 0;
2475
2476         for (i = 0; i < vdev->no_of_vpath; i++) {
2477                 if (test_bit(i, &vdev->vp_reset)) {
2478                         vxge_reset_vpath(vdev, i);
2479                         j++;
2480                 }
2481         }
2482         if (j && (vdev->config.intr_type != MSI_X)) {
2483                 vxge_hw_device_unmask_all(vdev->devh);
2484                 vxge_hw_device_flush_io(vdev->devh);
2485         }
2486
2487         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2488 }
2489
2490 static void vxge_poll_vp_lockup(unsigned long data)
2491 {
2492         struct vxgedev *vdev = (struct vxgedev *)data;
2493         enum vxge_hw_status status = VXGE_HW_OK;
2494         struct vxge_vpath *vpath;
2495         struct vxge_ring *ring;
2496         int i;
2497
2498         for (i = 0; i < vdev->no_of_vpath; i++) {
2499                 ring = &vdev->vpaths[i].ring;
2500                 /* Did this vpath received any packets */
2501                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2502                         status = vxge_hw_vpath_check_leak(ring->handle);
2503
2504                         /* Did it received any packets last time */
2505                         if ((VXGE_HW_FAIL == status) &&
2506                                 (VXGE_HW_FAIL == ring->last_status)) {
2507
2508                                 /* schedule vpath reset */
2509                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2510                                         vpath = &vdev->vpaths[i];
2511
2512                                         /* disable interrupts for this vpath */
2513                                         vxge_vpath_intr_disable(vdev, i);
2514
2515                                         /* stop the queue for this vpath */
2516                                         netif_tx_stop_queue(vpath->fifo.txq);
2517                                         continue;
2518                                 }
2519                         }
2520                 }
2521                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2522                 ring->last_status = status;
2523         }
2524
2525         /* Check every 1 milli second */
2526         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2527 }
2528
2529 /**
2530  * vxge_open
2531  * @dev: pointer to the device structure.
2532  *
2533  * This function is the open entry point of the driver. It mainly calls a
2534  * function to allocate Rx buffers and inserts them into the buffer
2535  * descriptors and then enables the Rx part of the NIC.
2536  * Return value: '0' on success and an appropriate (-)ve integer as
2537  * defined in errno.h file on failure.
2538  */
2539 static int
2540 vxge_open(struct net_device *dev)
2541 {
2542         enum vxge_hw_status status;
2543         struct vxgedev *vdev;
2544         struct __vxge_hw_device *hldev;
2545         struct vxge_vpath *vpath;
2546         int ret = 0;
2547         int i;
2548         u64 val64, function_mode;
2549         vxge_debug_entryexit(VXGE_TRACE,
2550                 "%s: %s:%d", dev->name, __func__, __LINE__);
2551
2552         vdev = (struct vxgedev *)netdev_priv(dev);
2553         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2554         function_mode = vdev->config.device_hw_info.function_mode;
2555
2556         /* make sure you have link off by default every time Nic is
2557          * initialized */
2558         netif_carrier_off(dev);
2559
2560         /* Open VPATHs */
2561         status = vxge_open_vpaths(vdev);
2562         if (status != VXGE_HW_OK) {
2563                 vxge_debug_init(VXGE_ERR,
2564                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2565                 ret = -EPERM;
2566                 goto out0;
2567         }
2568
2569         vdev->mtu = dev->mtu;
2570
2571         status = vxge_add_isr(vdev);
2572         if (status != VXGE_HW_OK) {
2573                 vxge_debug_init(VXGE_ERR,
2574                         "%s: fatal: ISR add failed", dev->name);
2575                 ret = -EPERM;
2576                 goto out1;
2577         }
2578
2579         if (vdev->config.intr_type != MSI_X) {
2580                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2581                         vdev->config.napi_weight);
2582                 napi_enable(&vdev->napi);
2583                 for (i = 0; i < vdev->no_of_vpath; i++) {
2584                         vpath = &vdev->vpaths[i];
2585                         vpath->ring.napi_p = &vdev->napi;
2586                 }
2587         } else {
2588                 for (i = 0; i < vdev->no_of_vpath; i++) {
2589                         vpath = &vdev->vpaths[i];
2590                         netif_napi_add(dev, &vpath->ring.napi,
2591                             vxge_poll_msix, vdev->config.napi_weight);
2592                         napi_enable(&vpath->ring.napi);
2593                         vpath->ring.napi_p = &vpath->ring.napi;
2594                 }
2595         }
2596
2597         /* configure RTH */
2598         if (vdev->config.rth_steering) {
2599                 status = vxge_rth_configure(vdev);
2600                 if (status != VXGE_HW_OK) {
2601                         vxge_debug_init(VXGE_ERR,
2602                                 "%s: fatal: RTH configuration failed",
2603                                 dev->name);
2604                         ret = -EPERM;
2605                         goto out2;
2606                 }
2607         }
2608         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2609                hldev->config.rth_en ? "enabled" : "disabled");
2610
2611         for (i = 0; i < vdev->no_of_vpath; i++) {
2612                 vpath = &vdev->vpaths[i];
2613
2614                 /* set initial mtu before enabling the device */
2615                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2616                 if (status != VXGE_HW_OK) {
2617                         vxge_debug_init(VXGE_ERR,
2618                                 "%s: fatal: can not set new MTU", dev->name);
2619                         ret = -EPERM;
2620                         goto out2;
2621                 }
2622         }
2623
2624         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2625         vxge_debug_init(vdev->level_trace,
2626                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2627         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2628
2629         /* Restore the DA, VID table and also multicast and promiscuous mode
2630          * states
2631          */
2632         if (vdev->all_multi_flg) {
2633                 for (i = 0; i < vdev->no_of_vpath; i++) {
2634                         vpath = &vdev->vpaths[i];
2635                         vxge_restore_vpath_mac_addr(vpath);
2636                         vxge_restore_vpath_vid_table(vpath);
2637
2638                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2639                         if (status != VXGE_HW_OK)
2640                                 vxge_debug_init(VXGE_ERR,
2641                                         "%s:%d Enabling multicast failed",
2642                                         __func__, __LINE__);
2643                 }
2644         }
2645
2646         /* Enable vpath to sniff all unicast/multicast traffic that not
2647          * addressed to them. We allow promiscous mode for PF only
2648          */
2649
2650         val64 = 0;
2651         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2652                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2653
2654         vxge_hw_mgmt_reg_write(vdev->devh,
2655                 vxge_hw_mgmt_reg_type_mrpcim,
2656                 0,
2657                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2658                         rxmac_authorize_all_addr),
2659                 val64);
2660
2661         vxge_hw_mgmt_reg_write(vdev->devh,
2662                 vxge_hw_mgmt_reg_type_mrpcim,
2663                 0,
2664                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2665                         rxmac_authorize_all_vid),
2666                 val64);
2667
2668         vxge_set_multicast(dev);
2669
2670         /* Enabling Bcast and mcast for all vpath */
2671         for (i = 0; i < vdev->no_of_vpath; i++) {
2672                 vpath = &vdev->vpaths[i];
2673                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2674                 if (status != VXGE_HW_OK)
2675                         vxge_debug_init(VXGE_ERR,
2676                                 "%s : Can not enable bcast for vpath "
2677                                 "id %d", dev->name, i);
2678                 if (vdev->config.addr_learn_en) {
2679                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2680                         if (status != VXGE_HW_OK)
2681                                 vxge_debug_init(VXGE_ERR,
2682                                         "%s : Can not enable mcast for vpath "
2683                                         "id %d", dev->name, i);
2684                 }
2685         }
2686
2687         vxge_hw_device_setpause_data(vdev->devh, 0,
2688                 vdev->config.tx_pause_enable,
2689                 vdev->config.rx_pause_enable);
2690
2691         if (vdev->vp_reset_timer.function == NULL)
2692                 vxge_os_timer(vdev->vp_reset_timer,
2693                         vxge_poll_vp_reset, vdev, (HZ/2));
2694
2695         if (vdev->vp_lockup_timer.function == NULL)
2696                 vxge_os_timer(vdev->vp_lockup_timer,
2697                         vxge_poll_vp_lockup, vdev, (HZ/2));
2698
2699         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2700
2701         smp_wmb();
2702
2703         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2704                 netif_carrier_on(vdev->ndev);
2705                 netdev_notice(vdev->ndev, "Link Up\n");
2706                 vdev->stats.link_up++;
2707         }
2708
2709         vxge_hw_device_intr_enable(vdev->devh);
2710
2711         smp_wmb();
2712
2713         for (i = 0; i < vdev->no_of_vpath; i++) {
2714                 vpath = &vdev->vpaths[i];
2715
2716                 vxge_hw_vpath_enable(vpath->handle);
2717                 smp_wmb();
2718                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2719         }
2720
2721         netif_tx_start_all_queues(vdev->ndev);
2722         goto out0;
2723
2724 out2:
2725         vxge_rem_isr(vdev);
2726
2727         /* Disable napi */
2728         if (vdev->config.intr_type != MSI_X)
2729                 napi_disable(&vdev->napi);
2730         else {
2731                 for (i = 0; i < vdev->no_of_vpath; i++)
2732                         napi_disable(&vdev->vpaths[i].ring.napi);
2733         }
2734
2735 out1:
2736         vxge_close_vpaths(vdev, 0);
2737 out0:
2738         vxge_debug_entryexit(VXGE_TRACE,
2739                                 "%s: %s:%d  Exiting...",
2740                                 dev->name, __func__, __LINE__);
2741         return ret;
2742 }
2743
2744 /* Loop throught the mac address list and delete all the entries */
2745 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2746 {
2747
2748         struct list_head *entry, *next;
2749         if (list_empty(&vpath->mac_addr_list))
2750                 return;
2751
2752         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2753                 list_del(entry);
2754                 kfree((struct vxge_mac_addrs *)entry);
2755         }
2756 }
2757
2758 static void vxge_napi_del_all(struct vxgedev *vdev)
2759 {
2760         int i;
2761         if (vdev->config.intr_type != MSI_X)
2762                 netif_napi_del(&vdev->napi);
2763         else {
2764                 for (i = 0; i < vdev->no_of_vpath; i++)
2765                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2766         }
2767 }
2768
2769 static int do_vxge_close(struct net_device *dev, int do_io)
2770 {
2771         enum vxge_hw_status status;
2772         struct vxgedev *vdev;
2773         struct __vxge_hw_device *hldev;
2774         int i;
2775         u64 val64, vpath_vector;
2776         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2777                 dev->name, __func__, __LINE__);
2778
2779         vdev = (struct vxgedev *)netdev_priv(dev);
2780         hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
2781
2782         if (unlikely(!is_vxge_card_up(vdev)))
2783                 return 0;
2784
2785         /* If vxge_handle_crit_err task is executing,
2786          * wait till it completes. */
2787         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2788                 msleep(50);
2789
2790         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2791         if (do_io) {
2792                 /* Put the vpath back in normal mode */
2793                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2794                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2795                                 vxge_hw_mgmt_reg_type_mrpcim,
2796                                 0,
2797                                 (ulong)offsetof(
2798                                         struct vxge_hw_mrpcim_reg,
2799                                         rts_mgr_cbasin_cfg),
2800                                 &val64);
2801
2802                 if (status == VXGE_HW_OK) {
2803                         val64 &= ~vpath_vector;
2804                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2805                                         vxge_hw_mgmt_reg_type_mrpcim,
2806                                         0,
2807                                         (ulong)offsetof(
2808                                                 struct vxge_hw_mrpcim_reg,
2809                                                 rts_mgr_cbasin_cfg),
2810                                         val64);
2811                 }
2812
2813                 /* Remove the function 0 from promiscous mode */
2814                 vxge_hw_mgmt_reg_write(vdev->devh,
2815                         vxge_hw_mgmt_reg_type_mrpcim,
2816                         0,
2817                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2818                                 rxmac_authorize_all_addr),
2819                         0);
2820
2821                 vxge_hw_mgmt_reg_write(vdev->devh,
2822                         vxge_hw_mgmt_reg_type_mrpcim,
2823                         0,
2824                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2825                                 rxmac_authorize_all_vid),
2826                         0);
2827
2828                 smp_wmb();
2829         }
2830         del_timer_sync(&vdev->vp_lockup_timer);
2831
2832         del_timer_sync(&vdev->vp_reset_timer);
2833
2834         /* Disable napi */
2835         if (vdev->config.intr_type != MSI_X)
2836                 napi_disable(&vdev->napi);
2837         else {
2838                 for (i = 0; i < vdev->no_of_vpath; i++)
2839                         napi_disable(&vdev->vpaths[i].ring.napi);
2840         }
2841
2842         netif_carrier_off(vdev->ndev);
2843         netdev_notice(vdev->ndev, "Link Down\n");
2844         netif_tx_stop_all_queues(vdev->ndev);
2845
2846         /* Note that at this point xmit() is stopped by upper layer */
2847         if (do_io)
2848                 vxge_hw_device_intr_disable(vdev->devh);
2849
2850         mdelay(1000);
2851
2852         vxge_rem_isr(vdev);
2853
2854         vxge_napi_del_all(vdev);
2855
2856         if (do_io)
2857                 vxge_reset_all_vpaths(vdev);
2858
2859         vxge_close_vpaths(vdev, 0);
2860
2861         vxge_debug_entryexit(VXGE_TRACE,
2862                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2863
2864         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2865
2866         return 0;
2867 }
2868
2869 /**
2870  * vxge_close
2871  * @dev: device pointer.
2872  *
2873  * This is the stop entry point of the driver. It needs to undo exactly
2874  * whatever was done by the open entry point, thus it's usually referred to
2875  * as the close function.Among other things this function mainly stops the
2876  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2877  * Return value: '0' on success and an appropriate (-)ve integer as
2878  * defined in errno.h file on failure.
2879  */
2880 static int
2881 vxge_close(struct net_device *dev)
2882 {
2883         do_vxge_close(dev, 1);
2884         return 0;
2885 }
2886
2887 /**
2888  * vxge_change_mtu
2889  * @dev: net device pointer.
2890  * @new_mtu :the new MTU size for the device.
2891  *
2892  * A driver entry point to change MTU size for the device. Before changing
2893  * the MTU the device must be stopped.
2894  */
2895 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2896 {
2897         struct vxgedev *vdev = netdev_priv(dev);
2898
2899         vxge_debug_entryexit(vdev->level_trace,
2900                 "%s:%d", __func__, __LINE__);
2901         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2902                 vxge_debug_init(vdev->level_err,
2903                         "%s: mtu size is invalid", dev->name);
2904                 return -EPERM;
2905         }
2906
2907         /* check if device is down already */
2908         if (unlikely(!is_vxge_card_up(vdev))) {
2909                 /* just store new value, will use later on open() */
2910                 dev->mtu = new_mtu;
2911                 vxge_debug_init(vdev->level_err,
2912                         "%s", "device is down on MTU change");
2913                 return 0;
2914         }
2915
2916         vxge_debug_init(vdev->level_trace,
2917                 "trying to apply new MTU %d", new_mtu);
2918
2919         if (vxge_close(dev))
2920                 return -EIO;
2921
2922         dev->mtu = new_mtu;
2923         vdev->mtu = new_mtu;
2924
2925         if (vxge_open(dev))
2926                 return -EIO;
2927
2928         vxge_debug_init(vdev->level_trace,
2929                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2930
2931         vxge_debug_entryexit(vdev->level_trace,
2932                 "%s:%d  Exiting...", __func__, __LINE__);
2933
2934         return 0;
2935 }
2936
2937 /**
2938  * vxge_get_stats64
2939  * @dev: pointer to the device structure
2940  * @stats: pointer to struct rtnl_link_stats64
2941  *
2942  */
2943 static struct rtnl_link_stats64 *
2944 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
2945 {
2946         struct vxgedev *vdev = netdev_priv(dev);
2947         int k;
2948
2949         /* net_stats already zeroed by caller */
2950         for (k = 0; k < vdev->no_of_vpath; k++) {
2951                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
2952                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
2953                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
2954                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
2955                 net_stats->rx_dropped +=
2956                         vdev->vpaths[k].ring.stats.rx_dropped;
2957
2958                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
2959                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
2960                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
2961         }
2962
2963         return net_stats;
2964 }
2965
2966 /**
2967  * vxge_ioctl
2968  * @dev: Device pointer.
2969  * @ifr: An IOCTL specific structure, that can contain a pointer to
2970  *       a proprietary structure used to pass information to the driver.
2971  * @cmd: This is used to distinguish between the different commands that
2972  *       can be passed to the IOCTL functions.
2973  *
2974  * Entry point for the Ioctl.
2975  */
2976 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2977 {
2978         return -EOPNOTSUPP;
2979 }
2980
2981 /**
2982  * vxge_tx_watchdog
2983  * @dev: pointer to net device structure
2984  *
2985  * Watchdog for transmit side.
2986  * This function is triggered if the Tx Queue is stopped
2987  * for a pre-defined amount of time when the Interface is still up.
2988  */
2989 static void
2990 vxge_tx_watchdog(struct net_device *dev)
2991 {
2992         struct vxgedev *vdev;
2993
2994         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2995
2996         vdev = (struct vxgedev *)netdev_priv(dev);
2997
2998         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
2999
3000         vxge_reset(vdev);
3001         vxge_debug_entryexit(VXGE_TRACE,
3002                 "%s:%d  Exiting...", __func__, __LINE__);
3003 }
3004
3005 /**
3006  * vxge_vlan_rx_register
3007  * @dev: net device pointer.
3008  * @grp: vlan group
3009  *
3010  * Vlan group registration
3011  */
3012 static void
3013 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3014 {
3015         struct vxgedev *vdev;
3016         struct vxge_vpath *vpath;
3017         int vp;
3018         u64 vid;
3019         enum vxge_hw_status status;
3020         int i;
3021
3022         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3023
3024         vdev = (struct vxgedev *)netdev_priv(dev);
3025
3026         vpath = &vdev->vpaths[0];
3027         if ((NULL == grp) && (vpath->is_open)) {
3028                 /* Get the first vlan */
3029                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3030
3031                 while (status == VXGE_HW_OK) {
3032
3033                         /* Delete this vlan from the vid table */
3034                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3035                                 vpath = &vdev->vpaths[vp];
3036                                 if (!vpath->is_open)
3037                                         continue;
3038
3039                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3040                         }
3041
3042                         /* Get the next vlan to be deleted */
3043                         vpath = &vdev->vpaths[0];
3044                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3045                 }
3046         }
3047
3048         vdev->vlgrp = grp;
3049
3050         for (i = 0; i < vdev->no_of_vpath; i++) {
3051                 if (vdev->vpaths[i].is_configured)
3052                         vdev->vpaths[i].ring.vlgrp = grp;
3053         }
3054
3055         vxge_debug_entryexit(VXGE_TRACE,
3056                 "%s:%d  Exiting...", __func__, __LINE__);
3057 }
3058
3059 /**
3060  * vxge_vlan_rx_add_vid
3061  * @dev: net device pointer.
3062  * @vid: vid
3063  *
3064  * Add the vlan id to the devices vlan id table
3065  */
3066 static void
3067 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3068 {
3069         struct vxgedev *vdev;
3070         struct vxge_vpath *vpath;
3071         int vp_id;
3072
3073         vdev = (struct vxgedev *)netdev_priv(dev);
3074
3075         /* Add these vlan to the vid table */
3076         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3077                 vpath = &vdev->vpaths[vp_id];
3078                 if (!vpath->is_open)
3079                         continue;
3080                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3081         }
3082 }
3083
3084 /**
3085  * vxge_vlan_rx_add_vid
3086  * @dev: net device pointer.
3087  * @vid: vid
3088  *
3089  * Remove the vlan id from the device's vlan id table
3090  */
3091 static void
3092 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3093 {
3094         struct vxgedev *vdev;
3095         struct vxge_vpath *vpath;
3096         int vp_id;
3097
3098         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3099
3100         vdev = (struct vxgedev *)netdev_priv(dev);
3101
3102         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3103
3104         /* Delete this vlan from the vid table */
3105         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3106                 vpath = &vdev->vpaths[vp_id];
3107                 if (!vpath->is_open)
3108                         continue;
3109                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3110         }
3111         vxge_debug_entryexit(VXGE_TRACE,
3112                 "%s:%d  Exiting...", __func__, __LINE__);
3113 }
3114
3115 static const struct net_device_ops vxge_netdev_ops = {
3116         .ndo_open               = vxge_open,
3117         .ndo_stop               = vxge_close,
3118         .ndo_get_stats64        = vxge_get_stats64,
3119         .ndo_start_xmit         = vxge_xmit,
3120         .ndo_validate_addr      = eth_validate_addr,
3121         .ndo_set_multicast_list = vxge_set_multicast,
3122
3123         .ndo_do_ioctl           = vxge_ioctl,
3124
3125         .ndo_set_mac_address    = vxge_set_mac_addr,
3126         .ndo_change_mtu         = vxge_change_mtu,
3127         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3128         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3129         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3130
3131         .ndo_tx_timeout         = vxge_tx_watchdog,
3132 #ifdef CONFIG_NET_POLL_CONTROLLER
3133         .ndo_poll_controller    = vxge_netpoll,
3134 #endif
3135 };
3136
3137 static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3138                                           struct vxge_config *config,
3139                                           int high_dma, int no_of_vpath,
3140                                           struct vxgedev **vdev_out)
3141 {
3142         struct net_device *ndev;
3143         enum vxge_hw_status status = VXGE_HW_OK;
3144         struct vxgedev *vdev;
3145         int ret = 0, no_of_queue = 1;
3146         u64 stat;
3147
3148         *vdev_out = NULL;
3149         if (config->tx_steering_type)
3150                 no_of_queue = no_of_vpath;
3151
3152         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3153                         no_of_queue);
3154         if (ndev == NULL) {
3155                 vxge_debug_init(
3156                         vxge_hw_device_trace_level_get(hldev),
3157                 "%s : device allocation failed", __func__);
3158                 ret = -ENODEV;
3159                 goto _out0;
3160         }
3161
3162         vxge_debug_entryexit(
3163                 vxge_hw_device_trace_level_get(hldev),
3164                 "%s: %s:%d  Entering...",
3165                 ndev->name, __func__, __LINE__);
3166
3167         vdev = netdev_priv(ndev);
3168         memset(vdev, 0, sizeof(struct vxgedev));
3169
3170         vdev->ndev = ndev;
3171         vdev->devh = hldev;
3172         vdev->pdev = hldev->pdev;
3173         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3174         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3175
3176         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3177
3178         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3179                                 NETIF_F_HW_VLAN_FILTER;
3180         /*  Driver entry points */
3181         ndev->irq = vdev->pdev->irq;
3182         ndev->base_addr = (unsigned long) hldev->bar0;
3183
3184         ndev->netdev_ops = &vxge_netdev_ops;
3185
3186         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3187
3188         vxge_initialize_ethtool_ops(ndev);
3189
3190         if (vdev->config.rth_steering != NO_STEERING) {
3191                 ndev->features |= NETIF_F_RXHASH;
3192                 hldev->config.rth_en = VXGE_HW_RTH_ENABLE;
3193         }
3194
3195         /* Allocate memory for vpath */
3196         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3197                                 no_of_vpath, GFP_KERNEL);
3198         if (!vdev->vpaths) {
3199                 vxge_debug_init(VXGE_ERR,
3200                         "%s: vpath memory allocation failed",
3201                         vdev->ndev->name);
3202                 ret = -ENODEV;
3203                 goto _out1;
3204         }
3205
3206         ndev->features |= NETIF_F_SG;
3207
3208         ndev->features |= NETIF_F_HW_CSUM;
3209         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3210                 "%s : checksuming enabled", __func__);
3211
3212         if (high_dma) {
3213                 ndev->features |= NETIF_F_HIGHDMA;
3214                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3215                         "%s : using High DMA", __func__);
3216         }
3217
3218         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3219
3220         if (vdev->config.gro_enable)
3221                 ndev->features |= NETIF_F_GRO;
3222
3223         if (register_netdev(ndev)) {
3224                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3225                         "%s: %s : device registration failed!",
3226                         ndev->name, __func__);
3227                 ret = -ENODEV;
3228                 goto _out2;
3229         }
3230
3231         /*  Set the factory defined MAC address initially */
3232         ndev->addr_len = ETH_ALEN;
3233
3234         /* Make Link state as off at this point, when the Link change
3235          * interrupt comes the state will be automatically changed to
3236          * the right state.
3237          */
3238         netif_carrier_off(ndev);
3239
3240         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3241                 "%s: Ethernet device registered",
3242                 ndev->name);
3243
3244         *vdev_out = vdev;
3245
3246         /* Resetting the Device stats */
3247         status = vxge_hw_mrpcim_stats_access(
3248                                 hldev,
3249                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3250                                 0,
3251                                 0,
3252                                 &stat);
3253
3254         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3255                 vxge_debug_init(
3256                         vxge_hw_device_trace_level_get(hldev),
3257                         "%s: device stats clear returns"
3258                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3259
3260         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3261                 "%s: %s:%d  Exiting...",
3262                 ndev->name, __func__, __LINE__);
3263
3264         return ret;
3265 _out2:
3266         kfree(vdev->vpaths);
3267 _out1:
3268         free_netdev(ndev);
3269 _out0:
3270         return ret;
3271 }
3272
3273 /*
3274  * vxge_device_unregister
3275  *
3276  * This function will unregister and free network device
3277  */
3278 static void
3279 vxge_device_unregister(struct __vxge_hw_device *hldev)
3280 {
3281         struct vxgedev *vdev;
3282         struct net_device *dev;
3283         char buf[IFNAMSIZ];
3284 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3285         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3286         u32 level_trace;
3287 #endif
3288
3289         dev = hldev->ndev;
3290         vdev = netdev_priv(dev);
3291 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
3292         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
3293         level_trace = vdev->level_trace;
3294 #endif
3295         vxge_debug_entryexit(level_trace,
3296                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3297
3298         memcpy(buf, vdev->ndev->name, IFNAMSIZ);
3299
3300         /* in 2.6 will call stop() if device is up */
3301         unregister_netdev(dev);
3302
3303         flush_scheduled_work();
3304
3305         vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
3306         vxge_debug_entryexit(level_trace,
3307                 "%s: %s:%d  Exiting...", buf, __func__, __LINE__);
3308 }
3309
3310 /*
3311  * vxge_callback_crit_err
3312  *
3313  * This function is called by the alarm handler in interrupt context.
3314  * Driver must analyze it based on the event type.
3315  */
3316 static void
3317 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3318                         enum vxge_hw_event type, u64 vp_id)
3319 {
3320         struct net_device *dev = hldev->ndev;
3321         struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
3322         struct vxge_vpath *vpath = NULL;
3323         int vpath_idx;
3324
3325         vxge_debug_entryexit(vdev->level_trace,
3326                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3327
3328         /* Note: This event type should be used for device wide
3329          * indications only - Serious errors, Slot freeze and critical errors
3330          */
3331         vdev->cric_err_event = type;
3332
3333         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3334                 vpath = &vdev->vpaths[vpath_idx];
3335                 if (vpath->device_id == vp_id)
3336                         break;
3337         }
3338
3339         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3340                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3341                         vxge_debug_init(VXGE_ERR,
3342                                 "%s: Slot is frozen", vdev->ndev->name);
3343                 } else if (type == VXGE_HW_EVENT_SERR) {
3344                         vxge_debug_init(VXGE_ERR,
3345                                 "%s: Encountered Serious Error",
3346                                 vdev->ndev->name);
3347                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3348                         vxge_debug_init(VXGE_ERR,
3349                                 "%s: Encountered Critical Error",
3350                                 vdev->ndev->name);
3351         }
3352
3353         if ((type == VXGE_HW_EVENT_SERR) ||
3354                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3355                 if (unlikely(vdev->exec_mode))
3356                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3357         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3358                 vxge_hw_device_mask_all(hldev);
3359                 if (unlikely(vdev->exec_mode))
3360                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3361         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3362                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3363
3364                 if (unlikely(vdev->exec_mode))
3365                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3366                 else {
3367                         /* check if this vpath is already set for reset */
3368                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3369
3370                                 /* disable interrupts for this vpath */
3371                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3372
3373                                 /* stop the queue for this vpath */
3374                                 netif_tx_stop_queue(vpath->fifo.txq);
3375                         }
3376                 }
3377         }
3378
3379         vxge_debug_entryexit(vdev->level_trace,
3380                 "%s: %s:%d  Exiting...",
3381                 vdev->ndev->name, __func__, __LINE__);
3382 }
3383
3384 static void verify_bandwidth(void)
3385 {
3386         int i, band_width, total = 0, equal_priority = 0;
3387
3388         /* 1. If user enters 0 for some fifo, give equal priority to all */
3389         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3390                 if (bw_percentage[i] == 0) {
3391                         equal_priority = 1;
3392                         break;
3393                 }
3394         }
3395
3396         if (!equal_priority) {
3397                 /* 2. If sum exceeds 100, give equal priority to all */
3398                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3399                         if (bw_percentage[i] == 0xFF)
3400                                 break;
3401
3402                         total += bw_percentage[i];
3403                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3404                                 equal_priority = 1;
3405                                 break;
3406                         }
3407                 }
3408         }
3409
3410         if (!equal_priority) {
3411                 /* Is all the bandwidth consumed? */
3412                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3413                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3414                                 /* Split rest of bw equally among next VPs*/
3415                                 band_width =
3416                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3417                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3418                                 if (band_width < 2) /* min of 2% */
3419                                         equal_priority = 1;
3420                                 else {
3421                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3422                                                 i++)
3423                                                 bw_percentage[i] =
3424                                                         band_width;
3425                                 }
3426                         }
3427                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3428                         equal_priority = 1;
3429         }
3430
3431         if (equal_priority) {
3432                 vxge_debug_init(VXGE_ERR,
3433                         "%s: Assigning equal bandwidth to all the vpaths",
3434                         VXGE_DRIVER_NAME);
3435                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3436                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3437                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3438                         bw_percentage[i] = bw_percentage[0];
3439         }
3440 }
3441
3442 /*
3443  * Vpath configuration
3444  */
3445 static int __devinit vxge_config_vpaths(
3446                         struct vxge_hw_device_config *device_config,
3447                         u64 vpath_mask, struct vxge_config *config_param)
3448 {
3449         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3450         u32 txdl_size, txdl_per_memblock;
3451
3452         temp = driver_config->vpath_per_dev;
3453         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3454                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3455                 /* No more CPU. Return vpath number as zero.*/
3456                 if (driver_config->g_no_cpus == -1)
3457                         return 0;
3458
3459                 if (!driver_config->g_no_cpus)
3460                         driver_config->g_no_cpus = num_online_cpus();
3461
3462                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3463                 if (!driver_config->vpath_per_dev)
3464                         driver_config->vpath_per_dev = 1;
3465
3466                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3467                         if (!vxge_bVALn(vpath_mask, i, 1))
3468                                 continue;
3469                         else
3470                                 default_no_vpath++;
3471                 if (default_no_vpath < driver_config->vpath_per_dev)
3472                         driver_config->vpath_per_dev = default_no_vpath;
3473
3474                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3475                                 (driver_config->vpath_per_dev * 2);
3476                 if (driver_config->g_no_cpus <= 0)
3477                         driver_config->g_no_cpus = -1;
3478         }
3479
3480         if (driver_config->vpath_per_dev == 1) {
3481                 vxge_debug_ll_config(VXGE_TRACE,
3482                         "%s: Disable tx and rx steering, "
3483                         "as single vpath is configured", VXGE_DRIVER_NAME);
3484                 config_param->rth_steering = NO_STEERING;
3485                 config_param->tx_steering_type = NO_STEERING;
3486                 device_config->rth_en = 0;
3487         }
3488
3489         /* configure bandwidth */
3490         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3491                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3492
3493         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3494                 device_config->vp_config[i].vp_id = i;
3495                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3496                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3497                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3498                                 vxge_debug_ll_config(VXGE_TRACE,
3499                                         "%s: vpath: %d is not available",
3500                                         VXGE_DRIVER_NAME, i);
3501                                 continue;
3502                         } else {
3503                                 vxge_debug_ll_config(VXGE_TRACE,
3504                                         "%s: vpath: %d available",
3505                                         VXGE_DRIVER_NAME, i);
3506                                 no_of_vpaths++;
3507                         }
3508                 } else {
3509                         vxge_debug_ll_config(VXGE_TRACE,
3510                                 "%s: vpath: %d is not configured, "
3511                                 "max_config_vpath exceeded",
3512                                 VXGE_DRIVER_NAME, i);
3513                         break;
3514                 }
3515
3516                 /* Configure Tx fifo's */
3517                 device_config->vp_config[i].fifo.enable =
3518                                                 VXGE_HW_FIFO_ENABLE;
3519                 device_config->vp_config[i].fifo.max_frags =
3520                                 MAX_SKB_FRAGS + 1;
3521                 device_config->vp_config[i].fifo.memblock_size =
3522                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3523
3524                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3525                                 sizeof(struct vxge_hw_fifo_txd);
3526                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3527
3528                 device_config->vp_config[i].fifo.fifo_blocks =
3529                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3530
3531                 device_config->vp_config[i].fifo.intr =
3532                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3533
3534                 /* Configure tti properties */
3535                 device_config->vp_config[i].tti.intr_enable =
3536                                         VXGE_HW_TIM_INTR_ENABLE;
3537
3538                 device_config->vp_config[i].tti.btimer_val =
3539                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3540
3541                 device_config->vp_config[i].tti.timer_ac_en =
3542                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3543
3544                 /* For msi-x with napi (each vector
3545                 has a handler of its own) -
3546                 Set CI to OFF for all vpaths */
3547                 device_config->vp_config[i].tti.timer_ci_en =
3548                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3549
3550                 device_config->vp_config[i].tti.timer_ri_en =
3551                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3552
3553                 device_config->vp_config[i].tti.util_sel =
3554                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3555
3556                 device_config->vp_config[i].tti.ltimer_val =
3557                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3558
3559                 device_config->vp_config[i].tti.rtimer_val =
3560                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3561
3562                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3563                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3564                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3565                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3566                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3567                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3568                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3569
3570                 /* Configure Rx rings */
3571                 device_config->vp_config[i].ring.enable  =
3572                                                 VXGE_HW_RING_ENABLE;
3573
3574                 device_config->vp_config[i].ring.ring_blocks  =
3575                                                 VXGE_HW_DEF_RING_BLOCKS;
3576                 device_config->vp_config[i].ring.buffer_mode =
3577                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3578                 device_config->vp_config[i].ring.rxds_limit  =
3579                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3580                 device_config->vp_config[i].ring.scatter_mode =
3581                                         VXGE_HW_RING_SCATTER_MODE_A;
3582
3583                 /* Configure rti properties */
3584                 device_config->vp_config[i].rti.intr_enable =
3585                                         VXGE_HW_TIM_INTR_ENABLE;
3586
3587                 device_config->vp_config[i].rti.btimer_val =
3588                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3589
3590                 device_config->vp_config[i].rti.timer_ac_en =
3591                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3592
3593                 device_config->vp_config[i].rti.timer_ci_en =
3594                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3595
3596                 device_config->vp_config[i].rti.timer_ri_en =
3597                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3598
3599                 device_config->vp_config[i].rti.util_sel =
3600                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3601
3602                 device_config->vp_config[i].rti.urange_a =
3603                                                 RTI_RX_URANGE_A;
3604                 device_config->vp_config[i].rti.urange_b =
3605                                                 RTI_RX_URANGE_B;
3606                 device_config->vp_config[i].rti.urange_c =
3607                                                 RTI_RX_URANGE_C;
3608                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3609                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3610                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3611                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3612
3613                 device_config->vp_config[i].rti.rtimer_val =
3614                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3615
3616                 device_config->vp_config[i].rti.ltimer_val =
3617                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3618
3619                 device_config->vp_config[i].rpa_strip_vlan_tag =
3620                         vlan_tag_strip;
3621         }
3622
3623         driver_config->vpath_per_dev = temp;
3624         return no_of_vpaths;
3625 }
3626
3627 /* initialize device configuratrions */
3628 static void __devinit vxge_device_config_init(
3629                                 struct vxge_hw_device_config *device_config,
3630                                 int *intr_type)
3631 {
3632         /* Used for CQRQ/SRQ. */
3633         device_config->dma_blockpool_initial =
3634                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3635
3636         device_config->dma_blockpool_max =
3637                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3638
3639         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3640                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3641
3642 #ifndef CONFIG_PCI_MSI
3643         vxge_debug_init(VXGE_ERR,
3644                 "%s: This Kernel does not support "
3645                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3646         *intr_type = INTA;
3647 #endif
3648
3649         /* Configure whether MSI-X or IRQL. */
3650         switch (*intr_type) {
3651         case INTA:
3652                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3653                 break;
3654
3655         case MSI_X:
3656                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3657                 break;
3658         }
3659         /* Timer period between device poll */
3660         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3661
3662         /* Configure mac based steering. */
3663         device_config->rts_mac_en = addr_learn_en;
3664
3665         /* Configure Vpaths */
3666         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3667
3668         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3669                         __func__);
3670         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3671                         device_config->dma_blockpool_initial);
3672         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3673                         device_config->dma_blockpool_max);
3674         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3675                         device_config->intr_mode);
3676         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3677                         device_config->device_poll_millis);
3678         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3679                         device_config->rts_mac_en);
3680         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3681                         device_config->rth_en);
3682         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3683                         device_config->rth_it_type);
3684 }
3685
3686 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3687 {
3688         int i;
3689
3690         vxge_debug_init(VXGE_TRACE,
3691                 "%s: %d Vpath(s) opened",
3692                 vdev->ndev->name, vdev->no_of_vpath);
3693
3694         switch (vdev->config.intr_type) {
3695         case INTA:
3696                 vxge_debug_init(VXGE_TRACE,
3697                         "%s: Interrupt type INTA", vdev->ndev->name);
3698                 break;
3699
3700         case MSI_X:
3701                 vxge_debug_init(VXGE_TRACE,
3702                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3703                 break;
3704         }
3705
3706         if (vdev->config.rth_steering) {
3707                 vxge_debug_init(VXGE_TRACE,
3708                         "%s: RTH steering enabled for TCP_IPV4",
3709                         vdev->ndev->name);
3710         } else {
3711                 vxge_debug_init(VXGE_TRACE,
3712                         "%s: RTH steering disabled", vdev->ndev->name);
3713         }
3714
3715         switch (vdev->config.tx_steering_type) {
3716         case NO_STEERING:
3717                 vxge_debug_init(VXGE_TRACE,
3718                         "%s: Tx steering disabled", vdev->ndev->name);
3719                 break;
3720         case TX_PRIORITY_STEERING:
3721                 vxge_debug_init(VXGE_TRACE,
3722                         "%s: Unsupported tx steering option",
3723                         vdev->ndev->name);
3724                 vxge_debug_init(VXGE_TRACE,
3725                         "%s: Tx steering disabled", vdev->ndev->name);
3726                 vdev->config.tx_steering_type = 0;
3727                 break;
3728         case TX_VLAN_STEERING:
3729                 vxge_debug_init(VXGE_TRACE,
3730                         "%s: Unsupported tx steering option",
3731                         vdev->ndev->name);
3732                 vxge_debug_init(VXGE_TRACE,
3733                         "%s: Tx steering disabled", vdev->ndev->name);
3734                 vdev->config.tx_steering_type = 0;
3735                 break;
3736         case TX_MULTIQ_STEERING:
3737                 vxge_debug_init(VXGE_TRACE,
3738                         "%s: Tx multiqueue steering enabled",
3739                         vdev->ndev->name);
3740                 break;
3741         case TX_PORT_STEERING:
3742                 vxge_debug_init(VXGE_TRACE,
3743                         "%s: Tx port steering enabled",
3744                         vdev->ndev->name);
3745                 break;
3746         default:
3747                 vxge_debug_init(VXGE_ERR,
3748                         "%s: Unsupported tx steering type",
3749                         vdev->ndev->name);
3750                 vxge_debug_init(VXGE_TRACE,
3751                         "%s: Tx steering disabled", vdev->ndev->name);
3752                 vdev->config.tx_steering_type = 0;
3753         }
3754
3755         if (vdev->config.gro_enable) {
3756                 vxge_debug_init(VXGE_ERR,
3757                         "%s: Generic receive offload enabled",
3758                         vdev->ndev->name);
3759         } else
3760                 vxge_debug_init(VXGE_TRACE,
3761                         "%s: Generic receive offload disabled",
3762                         vdev->ndev->name);
3763
3764         if (vdev->config.addr_learn_en)
3765                 vxge_debug_init(VXGE_TRACE,
3766                         "%s: MAC Address learning enabled", vdev->ndev->name);
3767
3768         vxge_debug_init(VXGE_TRACE,
3769                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3770
3771         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3772                 if (!vxge_bVALn(vpath_mask, i, 1))
3773                         continue;
3774                 vxge_debug_ll_config(VXGE_TRACE,
3775                         "%s: MTU size - %d", vdev->ndev->name,
3776                         ((struct __vxge_hw_device  *)(vdev->devh))->
3777                                 config.vp_config[i].mtu);
3778                 vxge_debug_init(VXGE_TRACE,
3779                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3780                         ((struct __vxge_hw_device  *)(vdev->devh))->
3781                                 config.vp_config[i].rpa_strip_vlan_tag
3782                         ? "Enabled" : "Disabled");
3783                 vxge_debug_init(VXGE_TRACE,
3784                         "%s: Ring blocks : %d", vdev->ndev->name,
3785                         ((struct __vxge_hw_device  *)(vdev->devh))->
3786                                 config.vp_config[i].ring.ring_blocks);
3787                 vxge_debug_init(VXGE_TRACE,
3788                         "%s: Fifo blocks : %d", vdev->ndev->name,
3789                         ((struct __vxge_hw_device  *)(vdev->devh))->
3790                                 config.vp_config[i].fifo.fifo_blocks);
3791                 vxge_debug_ll_config(VXGE_TRACE,
3792                         "%s: Max frags : %d", vdev->ndev->name,
3793                         ((struct __vxge_hw_device  *)(vdev->devh))->
3794                                 config.vp_config[i].fifo.max_frags);
3795                 break;
3796         }
3797 }
3798
3799 #ifdef CONFIG_PM
3800 /**
3801  * vxge_pm_suspend - vxge power management suspend entry point
3802  *
3803  */
3804 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3805 {
3806         return -ENOSYS;
3807 }
3808 /**
3809  * vxge_pm_resume - vxge power management resume entry point
3810  *
3811  */
3812 static int vxge_pm_resume(struct pci_dev *pdev)
3813 {
3814         return -ENOSYS;
3815 }
3816
3817 #endif
3818
3819 /**
3820  * vxge_io_error_detected - called when PCI error is detected
3821  * @pdev: Pointer to PCI device
3822  * @state: The current pci connection state
3823  *
3824  * This function is called after a PCI bus error affecting
3825  * this device has been detected.
3826  */
3827 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3828                                                 pci_channel_state_t state)
3829 {
3830         struct __vxge_hw_device  *hldev =
3831                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3832         struct net_device *netdev = hldev->ndev;
3833
3834         netif_device_detach(netdev);
3835
3836         if (state == pci_channel_io_perm_failure)
3837                 return PCI_ERS_RESULT_DISCONNECT;
3838
3839         if (netif_running(netdev)) {
3840                 /* Bring down the card, while avoiding PCI I/O */
3841                 do_vxge_close(netdev, 0);
3842         }
3843
3844         pci_disable_device(pdev);
3845
3846         return PCI_ERS_RESULT_NEED_RESET;
3847 }
3848
3849 /**
3850  * vxge_io_slot_reset - called after the pci bus has been reset.
3851  * @pdev: Pointer to PCI device
3852  *
3853  * Restart the card from scratch, as if from a cold-boot.
3854  * At this point, the card has exprienced a hard reset,
3855  * followed by fixups by BIOS, and has its config space
3856  * set up identically to what it was at cold boot.
3857  */
3858 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
3859 {
3860         struct __vxge_hw_device  *hldev =
3861                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3862         struct net_device *netdev = hldev->ndev;
3863
3864         struct vxgedev *vdev = netdev_priv(netdev);
3865
3866         if (pci_enable_device(pdev)) {
3867                 netdev_err(netdev, "Cannot re-enable device after reset\n");
3868                 return PCI_ERS_RESULT_DISCONNECT;
3869         }
3870
3871         pci_set_master(pdev);
3872         vxge_reset(vdev);
3873
3874         return PCI_ERS_RESULT_RECOVERED;
3875 }
3876
3877 /**
3878  * vxge_io_resume - called when traffic can start flowing again.
3879  * @pdev: Pointer to PCI device
3880  *
3881  * This callback is called when the error recovery driver tells
3882  * us that its OK to resume normal operation.
3883  */
3884 static void vxge_io_resume(struct pci_dev *pdev)
3885 {
3886         struct __vxge_hw_device  *hldev =
3887                 (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
3888         struct net_device *netdev = hldev->ndev;
3889
3890         if (netif_running(netdev)) {
3891                 if (vxge_open(netdev)) {
3892                         netdev_err(netdev,
3893                                    "Can't bring device back up after reset\n");
3894                         return;
3895                 }
3896         }
3897
3898         netif_device_attach(netdev);
3899 }
3900
3901 static inline u32 vxge_get_num_vfs(u64 function_mode)
3902 {
3903         u32 num_functions = 0;
3904
3905         switch (function_mode) {
3906         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
3907         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
3908                 num_functions = 8;
3909                 break;
3910         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
3911                 num_functions = 1;
3912                 break;
3913         case VXGE_HW_FUNCTION_MODE_SRIOV:
3914         case VXGE_HW_FUNCTION_MODE_MRIOV:
3915         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
3916                 num_functions = 17;
3917                 break;
3918         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
3919                 num_functions = 4;
3920                 break;
3921         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
3922                 num_functions = 2;
3923                 break;
3924         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
3925                 num_functions = 8; /* TODO */
3926                 break;
3927         }
3928         return num_functions;
3929 }
3930
3931 /**
3932  * vxge_probe
3933  * @pdev : structure containing the PCI related information of the device.
3934  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
3935  * Description:
3936  * This function is called when a new PCI device gets detected and initializes
3937  * it.
3938  * Return value:
3939  * returns 0 on success and negative on failure.
3940  *
3941  */
3942 static int __devinit
3943 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
3944 {
3945         struct __vxge_hw_device  *hldev;
3946         enum vxge_hw_status status;
3947         int ret;
3948         int high_dma = 0;
3949         u64 vpath_mask = 0;
3950         struct vxgedev *vdev;
3951         struct vxge_config *ll_config = NULL;
3952         struct vxge_hw_device_config *device_config = NULL;
3953         struct vxge_hw_device_attr attr;
3954         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
3955         u8 *macaddr;
3956         struct vxge_mac_addrs *entry;
3957         static int bus = -1, device = -1;
3958         u32 host_type;
3959         u8 new_device = 0;
3960         enum vxge_hw_status is_privileged;
3961         u32 function_mode;
3962         u32 num_vfs = 0;
3963
3964         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3965         attr.pdev = pdev;
3966
3967         /* In SRIOV-17 mode, functions of the same adapter
3968          * can be deployed on different buses */
3969         if ((!pdev->is_virtfn) && ((bus != pdev->bus->number) ||
3970                 (device != PCI_SLOT(pdev->devfn))))
3971                 new_device = 1;
3972
3973         bus = pdev->bus->number;
3974         device = PCI_SLOT(pdev->devfn);
3975
3976         if (new_device) {
3977                 if (driver_config->config_dev_cnt &&
3978                    (driver_config->config_dev_cnt !=
3979                         driver_config->total_dev_cnt))
3980                         vxge_debug_init(VXGE_ERR,
3981                                 "%s: Configured %d of %d devices",
3982                                 VXGE_DRIVER_NAME,
3983                                 driver_config->config_dev_cnt,
3984                                 driver_config->total_dev_cnt);
3985                 driver_config->config_dev_cnt = 0;
3986                 driver_config->total_dev_cnt = 0;
3987         }
3988         /* Now making the CPU based no of vpath calculation
3989          * applicable for individual functions as well.
3990          */
3991         driver_config->g_no_cpus = 0;
3992         driver_config->vpath_per_dev = max_config_vpath;
3993
3994         driver_config->total_dev_cnt++;
3995         if (++driver_config->config_dev_cnt > max_config_dev) {
3996                 ret = 0;
3997                 goto _exit0;
3998         }
3999
4000         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4001                 GFP_KERNEL);
4002         if (!device_config) {
4003                 ret = -ENOMEM;
4004                 vxge_debug_init(VXGE_ERR,
4005                         "device_config : malloc failed %s %d",
4006                         __FILE__, __LINE__);
4007                 goto _exit0;
4008         }
4009
4010         ll_config = kzalloc(sizeof(*ll_config), GFP_KERNEL);
4011         if (!ll_config) {
4012                 ret = -ENOMEM;
4013                 vxge_debug_init(VXGE_ERR,
4014                         "ll_config : malloc failed %s %d",
4015                         __FILE__, __LINE__);
4016                 goto _exit0;
4017         }
4018         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4019         ll_config->intr_type = MSI_X;
4020         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4021         ll_config->rth_steering = RTH_STEERING;
4022
4023         /* get the default configuration parameters */
4024         vxge_hw_device_config_default_get(device_config);
4025
4026         /* initialize configuration parameters */
4027         vxge_device_config_init(device_config, &ll_config->intr_type);
4028
4029         ret = pci_enable_device(pdev);
4030         if (ret) {
4031                 vxge_debug_init(VXGE_ERR,
4032                         "%s : can not enable PCI device", __func__);
4033                 goto _exit0;
4034         }
4035
4036         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4037                 vxge_debug_ll_config(VXGE_TRACE,
4038                         "%s : using 64bit DMA", __func__);
4039
4040                 high_dma = 1;
4041
4042                 if (pci_set_consistent_dma_mask(pdev,
4043                                                 DMA_BIT_MASK(64))) {
4044                         vxge_debug_init(VXGE_ERR,
4045                                 "%s : unable to obtain 64bit DMA for "
4046                                 "consistent allocations", __func__);
4047                         ret = -ENOMEM;
4048                         goto _exit1;
4049                 }
4050         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4051                 vxge_debug_ll_config(VXGE_TRACE,
4052                         "%s : using 32bit DMA", __func__);
4053         } else {
4054                 ret = -ENOMEM;
4055                 goto _exit1;
4056         }
4057
4058         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4059                 vxge_debug_init(VXGE_ERR,
4060                         "%s : request regions failed", __func__);
4061                 ret = -ENODEV;
4062                 goto _exit1;
4063         }
4064
4065         pci_set_master(pdev);
4066
4067         attr.bar0 = pci_ioremap_bar(pdev, 0);
4068         if (!attr.bar0) {
4069                 vxge_debug_init(VXGE_ERR,
4070                         "%s : cannot remap io memory bar0", __func__);
4071                 ret = -ENODEV;
4072                 goto _exit2;
4073         }
4074         vxge_debug_ll_config(VXGE_TRACE,
4075                 "pci ioremap bar0: %p:0x%llx",
4076                 attr.bar0,
4077                 (unsigned long long)pci_resource_start(pdev, 0));
4078
4079         status = vxge_hw_device_hw_info_get(attr.bar0,
4080                         &ll_config->device_hw_info);
4081         if (status != VXGE_HW_OK) {
4082                 vxge_debug_init(VXGE_ERR,
4083                         "%s: Reading of hardware info failed."
4084                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4085                 ret = -EINVAL;
4086                 goto _exit3;
4087         }
4088
4089         if (ll_config->device_hw_info.fw_version.major !=
4090                 VXGE_DRIVER_FW_VERSION_MAJOR) {
4091                 vxge_debug_init(VXGE_ERR,
4092                         "%s: Incorrect firmware version."
4093                         "Please upgrade the firmware to version 1.x.x",
4094                         VXGE_DRIVER_NAME);
4095                 ret = -EINVAL;
4096                 goto _exit3;
4097         }
4098
4099         vpath_mask = ll_config->device_hw_info.vpath_mask;
4100         if (vpath_mask == 0) {
4101                 vxge_debug_ll_config(VXGE_TRACE,
4102                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4103                 ret = -EINVAL;
4104                 goto _exit3;
4105         }
4106
4107         vxge_debug_ll_config(VXGE_TRACE,
4108                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4109                 (unsigned long long)vpath_mask);
4110
4111         function_mode = ll_config->device_hw_info.function_mode;
4112         host_type = ll_config->device_hw_info.host_type;
4113         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4114                 ll_config->device_hw_info.func_id);
4115
4116         /* Check how many vpaths are available */
4117         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4118                 if (!((vpath_mask) & vxge_mBIT(i)))
4119                         continue;
4120                 max_vpath_supported++;
4121         }
4122
4123         if (new_device)
4124                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4125
4126         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4127         if (is_sriov(function_mode) && (max_config_dev > 1) &&
4128                 (ll_config->intr_type != INTA) &&
4129                 (is_privileged == VXGE_HW_OK)) {
4130                 ret = pci_enable_sriov(pdev, ((max_config_dev - 1) < num_vfs)
4131                         ? (max_config_dev - 1) : num_vfs);
4132                 if (ret)
4133                         vxge_debug_ll_config(VXGE_ERR,
4134                                 "Failed in enabling SRIOV mode: %d\n", ret);
4135         }
4136
4137         /*
4138          * Configure vpaths and get driver configured number of vpaths
4139          * which is less than or equal to the maximum vpaths per function.
4140          */
4141         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4142         if (!no_of_vpath) {
4143                 vxge_debug_ll_config(VXGE_ERR,
4144                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4145                 ret = 0;
4146                 goto _exit3;
4147         }
4148
4149         /* Setting driver callbacks */
4150         attr.uld_callbacks.link_up = vxge_callback_link_up;
4151         attr.uld_callbacks.link_down = vxge_callback_link_down;
4152         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4153
4154         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4155         if (status != VXGE_HW_OK) {
4156                 vxge_debug_init(VXGE_ERR,
4157                         "Failed to initialize device (%d)", status);
4158                         ret = -EINVAL;
4159                         goto _exit3;
4160         }
4161
4162         /* if FCS stripping is not disabled in MAC fail driver load */
4163         if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) {
4164                 vxge_debug_init(VXGE_ERR,
4165                         "%s: FCS stripping is not disabled in MAC"
4166                         " failing driver load", VXGE_DRIVER_NAME);
4167                 ret = -EINVAL;
4168                 goto _exit4;
4169         }
4170
4171         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4172
4173         /* set private device info */
4174         pci_set_drvdata(pdev, hldev);
4175
4176         ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4177         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4178         ll_config->addr_learn_en = addr_learn_en;
4179         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4180         ll_config->rth_hash_type_tcpipv4 = 1;
4181         ll_config->rth_hash_type_ipv4 = 0;
4182         ll_config->rth_hash_type_tcpipv6 = 0;
4183         ll_config->rth_hash_type_ipv6 = 0;
4184         ll_config->rth_hash_type_tcpipv6ex = 0;
4185         ll_config->rth_hash_type_ipv6ex = 0;
4186         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4187         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4188         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4189
4190         if (vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4191                 &vdev)) {
4192                 ret = -EINVAL;
4193                 goto _exit4;
4194         }
4195
4196         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4197         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4198                 vxge_hw_device_trace_level_get(hldev));
4199
4200         /* set private HW device info */
4201         hldev->ndev = vdev->ndev;
4202         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4203         vdev->bar0 = attr.bar0;
4204         vdev->max_vpath_supported = max_vpath_supported;
4205         vdev->no_of_vpath = no_of_vpath;
4206
4207         /* Virtual Path count */
4208         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4209                 if (!vxge_bVALn(vpath_mask, i, 1))
4210                         continue;
4211                 if (j >= vdev->no_of_vpath)
4212                         break;
4213
4214                 vdev->vpaths[j].is_configured = 1;
4215                 vdev->vpaths[j].device_id = i;
4216                 vdev->vpaths[j].ring.driver_id = j;
4217                 vdev->vpaths[j].vdev = vdev;
4218                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4219                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4220                                 ll_config->device_hw_info.mac_addrs[i],
4221                                 ETH_ALEN);
4222
4223                 /* Initialize the mac address list header */
4224                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4225
4226                 vdev->vpaths[j].mac_addr_cnt = 0;
4227                 vdev->vpaths[j].mcast_addr_cnt = 0;
4228                 j++;
4229         }
4230         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4231         vdev->max_config_port = max_config_port;
4232
4233         vdev->vlan_tag_strip = vlan_tag_strip;
4234
4235         /* map the hashing selector table to the configured vpaths */
4236         for (i = 0; i < vdev->no_of_vpath; i++)
4237                 vdev->vpath_selector[i] = vpath_selector[i];
4238
4239         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4240
4241         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4242         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4243         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4244
4245         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4246                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4247
4248         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4249                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4250
4251         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4252                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4253
4254         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4255                 vdev->ndev->name, macaddr);
4256
4257         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4258                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4259
4260         vxge_debug_init(VXGE_TRACE,
4261                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4262                 ll_config->device_hw_info.fw_version.version,
4263                 ll_config->device_hw_info.fw_date.date);
4264
4265         if (new_device) {
4266                 switch (ll_config->device_hw_info.function_mode) {
4267                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4268                         vxge_debug_init(VXGE_TRACE,
4269                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4270                 break;
4271                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4272                         vxge_debug_init(VXGE_TRACE,
4273                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4274                 break;
4275                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4276                         vxge_debug_init(VXGE_TRACE,
4277                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4278                 break;
4279                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4280                         vxge_debug_init(VXGE_TRACE,
4281                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4282                 break;
4283                 }
4284         }
4285
4286         vxge_print_parm(vdev, vpath_mask);
4287
4288         /* Store the fw version for ethttool option */
4289         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4290         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4291         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4292
4293         /* Copy the station mac address to the list */
4294         for (i = 0; i < vdev->no_of_vpath; i++) {
4295                 entry = (struct vxge_mac_addrs *)
4296                                 kzalloc(sizeof(struct vxge_mac_addrs),
4297                                         GFP_KERNEL);
4298                 if (NULL == entry) {
4299                         vxge_debug_init(VXGE_ERR,
4300                                 "%s: mac_addr_list : memory allocation failed",
4301                                 vdev->ndev->name);
4302                         ret = -EPERM;
4303                         goto _exit5;
4304                 }
4305                 macaddr = (u8 *)&entry->macaddr;
4306                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4307                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4308                 vdev->vpaths[i].mac_addr_cnt = 1;
4309         }
4310
4311         kfree(device_config);
4312
4313         /*
4314          * INTA is shared in multi-function mode. This is unlike the INTA
4315          * implementation in MR mode, where each VH has its own INTA message.
4316          * - INTA is masked (disabled) as long as at least one function sets
4317          * its TITAN_MASK_ALL_INT.ALARM bit.
4318          * - INTA is unmasked (enabled) when all enabled functions have cleared
4319          * their own TITAN_MASK_ALL_INT.ALARM bit.
4320          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4321          * Though this driver leaves the top level interrupts unmasked while
4322          * leaving the required module interrupt bits masked on exit, there
4323          * could be a rougue driver around that does not follow this procedure
4324          * resulting in a failure to generate interrupts. The following code is
4325          * present to prevent such a failure.
4326          */
4327
4328         if (ll_config->device_hw_info.function_mode ==
4329                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4330                 if (vdev->config.intr_type == INTA)
4331                         vxge_hw_device_unmask_all(hldev);
4332
4333         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4334                 vdev->ndev->name, __func__, __LINE__);
4335
4336         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4337         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4338                 vxge_hw_device_trace_level_get(hldev));
4339
4340         kfree(ll_config);
4341         return 0;
4342
4343 _exit5:
4344         for (i = 0; i < vdev->no_of_vpath; i++)
4345                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4346
4347         vxge_device_unregister(hldev);
4348 _exit4:
4349         pci_disable_sriov(pdev);
4350         vxge_hw_device_terminate(hldev);
4351 _exit3:
4352         iounmap(attr.bar0);
4353 _exit2:
4354         pci_release_regions(pdev);
4355 _exit1:
4356         pci_disable_device(pdev);
4357 _exit0:
4358         kfree(ll_config);
4359         kfree(device_config);
4360         driver_config->config_dev_cnt--;
4361         pci_set_drvdata(pdev, NULL);
4362         return ret;
4363 }
4364
4365 /**
4366  * vxge_rem_nic - Free the PCI device
4367  * @pdev: structure containing the PCI related information of the device.
4368  * Description: This function is called by the Pci subsystem to release a
4369  * PCI device and free up all resource held up by the device.
4370  */
4371 static void __devexit
4372 vxge_remove(struct pci_dev *pdev)
4373 {
4374         struct __vxge_hw_device  *hldev;
4375         struct vxgedev *vdev = NULL;
4376         struct net_device *dev;
4377         int i = 0;
4378 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4379         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4380         u32 level_trace;
4381 #endif
4382
4383         hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);
4384
4385         if (hldev == NULL)
4386                 return;
4387         dev = hldev->ndev;
4388         vdev = netdev_priv(dev);
4389
4390 #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
4391         (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
4392         level_trace = vdev->level_trace;
4393 #endif
4394         vxge_debug_entryexit(level_trace,
4395                 "%s:%d", __func__, __LINE__);
4396
4397         vxge_debug_init(level_trace,
4398                 "%s : removing PCI device...", __func__);
4399         vxge_device_unregister(hldev);
4400
4401         for (i = 0; i < vdev->no_of_vpath; i++) {
4402                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4403                 vdev->vpaths[i].mcast_addr_cnt = 0;
4404                 vdev->vpaths[i].mac_addr_cnt = 0;
4405         }
4406
4407         kfree(vdev->vpaths);
4408
4409         iounmap(vdev->bar0);
4410
4411         pci_disable_sriov(pdev);
4412
4413         /* we are safe to free it now */
4414         free_netdev(dev);
4415
4416         vxge_debug_init(level_trace,
4417                 "%s:%d  Device unregistered", __func__, __LINE__);
4418
4419         vxge_hw_device_terminate(hldev);
4420
4421         pci_disable_device(pdev);
4422         pci_release_regions(pdev);
4423         pci_set_drvdata(pdev, NULL);
4424         vxge_debug_entryexit(level_trace,
4425                 "%s:%d  Exiting...", __func__, __LINE__);
4426 }
4427
4428 static struct pci_error_handlers vxge_err_handler = {
4429         .error_detected = vxge_io_error_detected,
4430         .slot_reset = vxge_io_slot_reset,
4431         .resume = vxge_io_resume,
4432 };
4433
4434 static struct pci_driver vxge_driver = {
4435         .name = VXGE_DRIVER_NAME,
4436         .id_table = vxge_id_table,
4437         .probe = vxge_probe,
4438         .remove = __devexit_p(vxge_remove),
4439 #ifdef CONFIG_PM
4440         .suspend = vxge_pm_suspend,
4441         .resume = vxge_pm_resume,
4442 #endif
4443         .err_handler = &vxge_err_handler,
4444 };
4445
4446 static int __init
4447 vxge_starter(void)
4448 {
4449         int ret = 0;
4450
4451         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4452         pr_info("Driver version: %s\n", DRV_VERSION);
4453
4454         verify_bandwidth();
4455
4456         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4457         if (!driver_config)
4458                 return -ENOMEM;
4459
4460         ret = pci_register_driver(&vxge_driver);
4461
4462         if (driver_config->config_dev_cnt &&
4463            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4464                 vxge_debug_init(VXGE_ERR,
4465                         "%s: Configured %d of %d devices",
4466                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4467                         driver_config->total_dev_cnt);
4468
4469         if (ret)
4470                 kfree(driver_config);
4471
4472         return ret;
4473 }
4474
4475 static void __exit
4476 vxge_closer(void)
4477 {
4478         pci_unregister_driver(&vxge_driver);
4479         kfree(driver_config);
4480 }
4481 module_init(vxge_starter);
4482 module_exit(vxge_closer);