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 <linux/firmware.h>
  54 #include <linux/net_tstamp.h>
  55 #include "vxge-main.h"
  56 #include "vxge-reg.h"
  57
  58 MODULE_LICENSE("Dual BSD/GPL");
  59 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  60         "Virtualized Server Adapter");
  61
  62 static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
  63         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  64         PCI_ANY_ID},
  65         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  66         PCI_ANY_ID},
  67         {0}
  68 };
  69
  70 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  71
  72 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  73 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  74 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  75 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  76 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  77 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  78
  79 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  80                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  81 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  82         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  83 module_param_array(bw_percentage, uint, NULL, 0);
  84
  85 static struct vxge_drv_config *driver_config;
  86
  87 static enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev,
  88                                              struct macInfo *mac);
  89 static enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev,
  90                                              struct macInfo *mac);
  91 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac);
  92 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac);
  93 static enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath);
  94 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath);
  95
  96 static inline int is_vxge_card_up(struct vxgedev *vdev)
  97 {
  98         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  99 }
 100
 101 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
 102 {
 103         struct sk_buff **skb_ptr = NULL;
 104         struct sk_buff **temp;
 105 #define NR_SKB_COMPLETED 128
 106         struct sk_buff *completed[NR_SKB_COMPLETED];
 107         int more;
 108
 109         do {
 110                 more = 0;
 111                 skb_ptr = completed;
 112
 113                 if (__netif_tx_trylock(fifo->txq)) {
 114                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 115                                                 NR_SKB_COMPLETED, &more);
 116                         __netif_tx_unlock(fifo->txq);
 117                 }
 118
 119                 /* free SKBs */
 120                 for (temp = completed; temp != skb_ptr; temp++)
 121                         dev_kfree_skb_irq(*temp);
 122         } while (more);
 123 }
 124
 125 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 126 {
 127         int i;
 128
 129         /* Complete all transmits */
 130         for (i = 0; i < vdev->no_of_vpath; i++)
 131                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 132 }
 133
 134 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 135 {
 136         int i;
 137         struct vxge_ring *ring;
 138
 139         /* Complete all receives*/
 140         for (i = 0; i < vdev->no_of_vpath; i++) {
 141                 ring = &vdev->vpaths[i].ring;
 142                 vxge_hw_vpath_poll_rx(ring->handle);
 143         }
 144 }
 145
 146 /*
 147  * vxge_callback_link_up
 148  *
 149  * This function is called during interrupt context to notify link up state
 150  * change.
 151  */
 152 static void
 153 vxge_callback_link_up(struct __vxge_hw_device *hldev)
 154 {
 155         struct net_device *dev = hldev->ndev;
 156         struct vxgedev *vdev = netdev_priv(dev);
 157
 158         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 159                 vdev->ndev->name, __func__, __LINE__);
 160         netdev_notice(vdev->ndev, "Link Up\n");
 161         vdev->stats.link_up++;
 162
 163         netif_carrier_on(vdev->ndev);
 164         netif_tx_wake_all_queues(vdev->ndev);
 165
 166         vxge_debug_entryexit(VXGE_TRACE,
 167                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 168 }
 169
 170 /*
 171  * vxge_callback_link_down
 172  *
 173  * This function is called during interrupt context to notify link down state
 174  * change.
 175  */
 176 static void
 177 vxge_callback_link_down(struct __vxge_hw_device *hldev)
 178 {
 179         struct net_device *dev = hldev->ndev;
 180         struct vxgedev *vdev = netdev_priv(dev);
 181
 182         vxge_debug_entryexit(VXGE_TRACE,
 183                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 184         netdev_notice(vdev->ndev, "Link Down\n");
 185
 186         vdev->stats.link_down++;
 187         netif_carrier_off(vdev->ndev);
 188         netif_tx_stop_all_queues(vdev->ndev);
 189
 190         vxge_debug_entryexit(VXGE_TRACE,
 191                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 192 }
 193
 194 /*
 195  * vxge_rx_alloc
 196  *
 197  * Allocate SKB.
 198  */
 199 static struct sk_buff*
 200 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 201 {
 202         struct net_device    *dev;
 203         struct sk_buff       *skb;
 204         struct vxge_rx_priv *rx_priv;
 205
 206         dev = ring->ndev;
 207         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 208                 ring->ndev->name, __func__, __LINE__);
 209
 210         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 211
 212         /* try to allocate skb first. this one may fail */
 213         skb = netdev_alloc_skb(dev, skb_size +
 214         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 215         if (skb == NULL) {
 216                 vxge_debug_mem(VXGE_ERR,
 217                         "%s: out of memory to allocate SKB", dev->name);
 218                 ring->stats.skb_alloc_fail++;
 219                 return NULL;
 220         }
 221
 222         vxge_debug_mem(VXGE_TRACE,
 223                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 224                 __func__, __LINE__, skb);
 225
 226         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 227
 228         rx_priv->skb = skb;
 229         rx_priv->skb_data = NULL;
 230         rx_priv->data_size = skb_size;
 231         vxge_debug_entryexit(VXGE_TRACE,
 232                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 233
 234         return skb;
 235 }
 236
 237 /*
 238  * vxge_rx_map
 239  */
 240 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 241 {
 242         struct vxge_rx_priv *rx_priv;
 243         dma_addr_t dma_addr;
 244
 245         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 246                 ring->ndev->name, __func__, __LINE__);
 247         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 248
 249         rx_priv->skb_data = rx_priv->skb->data;
 250         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 251                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 252
 253         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 254                 ring->stats.pci_map_fail++;
 255                 return -EIO;
 256         }
 257         vxge_debug_mem(VXGE_TRACE,
 258                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 259                 ring->ndev->name, __func__, __LINE__,
 260                 (unsigned long long)dma_addr);
 261         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 262
 263         rx_priv->data_dma = dma_addr;
 264         vxge_debug_entryexit(VXGE_TRACE,
 265                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 266
 267         return 0;
 268 }
 269
 270 /*
 271  * vxge_rx_initial_replenish
 272  * Allocation of RxD as an initial replenish procedure.
 273  */
 274 static enum vxge_hw_status
 275 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 276 {
 277         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 278         struct vxge_rx_priv *rx_priv;
 279
 280         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 281                 ring->ndev->name, __func__, __LINE__);
 282         if (vxge_rx_alloc(dtrh, ring,
 283                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 284                 return VXGE_HW_FAIL;
 285
 286         if (vxge_rx_map(dtrh, ring)) {
 287                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 288                 dev_kfree_skb(rx_priv->skb);
 289
 290                 return VXGE_HW_FAIL;
 291         }
 292         vxge_debug_entryexit(VXGE_TRACE,
 293                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 294
 295         return VXGE_HW_OK;
 296 }
 297
 298 static inline void
 299 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 300                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 301 {
 302
 303         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 304                         ring->ndev->name, __func__, __LINE__);
 305         skb_record_rx_queue(skb, ring->driver_id);
 306         skb->protocol = eth_type_trans(skb, ring->ndev);
 307
 308         ring->stats.rx_frms++;
 309         ring->stats.rx_bytes += pkt_length;
 310
 311         if (skb->pkt_type == PACKET_MULTICAST)
 312                 ring->stats.rx_mcast++;
 313
 314         vxge_debug_rx(VXGE_TRACE,
 315                 "%s: %s:%d  skb protocol = %d",
 316                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 317
 318         if (ring->gro_enable) {
 319                 if (ring->vlgrp && ext_info->vlan &&
 320                         (ring->vlan_tag_strip ==
 321                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 322                         vlan_gro_receive(ring->napi_p, ring->vlgrp,
 323                                         ext_info->vlan, skb);
 324                 else
 325                         napi_gro_receive(ring->napi_p, skb);
 326         } else {
 327                 if (ring->vlgrp && vlan &&
 328                         (ring->vlan_tag_strip ==
 329                                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
 330                         vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
 331                 else
 332                         netif_receive_skb(skb);
 333         }
 334         vxge_debug_entryexit(VXGE_TRACE,
 335                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 336 }
 337
 338 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 339                                     struct vxge_rx_priv *rx_priv)
 340 {
 341         pci_dma_sync_single_for_device(ring->pdev,
 342                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 343
 344         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 345         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 346 }
 347
 348 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 349                              void *post_dtr, struct __vxge_hw_ring *ringh)
 350 {
 351         int dtr_count = *dtr_cnt;
 352         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 353                 if (*first_dtr)
 354                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 355                 *first_dtr = post_dtr;
 356         } else
 357                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 358         dtr_count++;
 359         *dtr_cnt = dtr_count;
 360 }
 361
 362 /*
 363  * vxge_rx_1b_compl
 364  *
 365  * If the interrupt is because of a received frame or if the receive ring
 366  * contains fresh as yet un-processed frames, this function is called.
 367  */
 368 static enum vxge_hw_status
 369 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 370                  u8 t_code, void *userdata)
 371 {
 372         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 373         struct net_device *dev = ring->ndev;
 374         unsigned int dma_sizes;
 375         void *first_dtr = NULL;
 376         int dtr_cnt = 0;
 377         int data_size;
 378         dma_addr_t data_dma;
 379         int pkt_length;
 380         struct sk_buff *skb;
 381         struct vxge_rx_priv *rx_priv;
 382         struct vxge_hw_ring_rxd_info ext_info;
 383         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 384                 ring->ndev->name, __func__, __LINE__);
 385         ring->pkts_processed = 0;
 386
 387         vxge_hw_ring_replenish(ringh);
 388
 389         do {
 390                 prefetch((char *)dtr + L1_CACHE_BYTES);
 391                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 392                 skb = rx_priv->skb;
 393                 data_size = rx_priv->data_size;
 394                 data_dma = rx_priv->data_dma;
 395                 prefetch(rx_priv->skb_data);
 396
 397                 vxge_debug_rx(VXGE_TRACE,
 398                         "%s: %s:%d  skb = 0x%p",
 399                         ring->ndev->name, __func__, __LINE__, skb);
 400
 401                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 402                 pkt_length = dma_sizes;
 403
 404                 pkt_length -= ETH_FCS_LEN;
 405
 406                 vxge_debug_rx(VXGE_TRACE,
 407                         "%s: %s:%d  Packet Length = %d",
 408                         ring->ndev->name, __func__, __LINE__, pkt_length);
 409
 410                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 411
 412                 /* check skb validity */
 413                 vxge_assert(skb);
 414
 415                 prefetch((char *)skb + L1_CACHE_BYTES);
 416                 if (unlikely(t_code)) {
 417
 418                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 419                                 VXGE_HW_OK) {
 420
 421                                 ring->stats.rx_errors++;
 422                                 vxge_debug_rx(VXGE_TRACE,
 423                                         "%s: %s :%d Rx T_code is %d",
 424                                         ring->ndev->name, __func__,
 425                                         __LINE__, t_code);
 426
 427                                 /* If the t_code is not supported and if the
 428                                  * t_code is other than 0x5 (unparseable packet
 429                                  * such as unknown UPV6 header), Drop it !!!
 430                                  */
 431                                 vxge_re_pre_post(dtr, ring, rx_priv);
 432
 433                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 434                                 ring->stats.rx_dropped++;
 435                                 continue;
 436                         }
 437                 }
 438
 439                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 440
 441                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 442
 443                                 if (!vxge_rx_map(dtr, ring)) {
 444                                         skb_put(skb, pkt_length);
 445
 446                                         pci_unmap_single(ring->pdev, data_dma,
 447                                                 data_size, PCI_DMA_FROMDEVICE);
 448
 449                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 450                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 451                                                 ringh);
 452                                 } else {
 453                                         dev_kfree_skb(rx_priv->skb);
 454                                         rx_priv->skb = skb;
 455                                         rx_priv->data_size = data_size;
 456                                         vxge_re_pre_post(dtr, ring, rx_priv);
 457
 458                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 459                                                 ringh);
 460                                         ring->stats.rx_dropped++;
 461                                         break;
 462                                 }
 463                         } else {
 464                                 vxge_re_pre_post(dtr, ring, rx_priv);
 465
 466                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 467                                 ring->stats.rx_dropped++;
 468                                 break;
 469                         }
 470                 } else {
 471                         struct sk_buff *skb_up;
 472
 473                         skb_up = netdev_alloc_skb(dev, pkt_length +
 474                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 475                         if (skb_up != NULL) {
 476                                 skb_reserve(skb_up,
 477                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 478
 479                                 pci_dma_sync_single_for_cpu(ring->pdev,
 480                                         data_dma, data_size,
 481                                         PCI_DMA_FROMDEVICE);
 482
 483                                 vxge_debug_mem(VXGE_TRACE,
 484                                         "%s: %s:%d  skb_up = %p",
 485                                         ring->ndev->name, __func__,
 486                                         __LINE__, skb);
 487                                 memcpy(skb_up->data, skb->data, pkt_length);
 488
 489                                 vxge_re_pre_post(dtr, ring, rx_priv);
 490
 491                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 492                                         ringh);
 493                                 /* will netif_rx small SKB instead */
 494                                 skb = skb_up;
 495                                 skb_put(skb, pkt_length);
 496                         } else {
 497                                 vxge_re_pre_post(dtr, ring, rx_priv);
 498
 499                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 500                                 vxge_debug_rx(VXGE_ERR,
 501                                         "%s: vxge_rx_1b_compl: out of "
 502                                         "memory", dev->name);
 503                                 ring->stats.skb_alloc_fail++;
 504                                 break;
 505                         }
 506                 }
 507
 508                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 509                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 510                     ring->rx_csum && /* Offload Rx side CSUM */
 511                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 512                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 513                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 514                 else
 515                         skb_checksum_none_assert(skb);
 516
 517
 518                 if (ring->rx_hwts) {
 519                         struct skb_shared_hwtstamps *skb_hwts;
 520                         u32 ns = *(u32 *)(skb->head + pkt_length);
 521
 522                         skb_hwts = skb_hwtstamps(skb);
 523                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 524                         skb_hwts->syststamp.tv64 = 0;
 525                 }
 526
 527                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 528                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 529                  * if rss is disabled/enabled, so key off of that.
 530                  */
 531                 if (ext_info.rth_value)
 532                         skb->rxhash = ext_info.rth_value;
 533
 534                 vxge_rx_complete(ring, skb, ext_info.vlan,
 535                         pkt_length, &ext_info);
 536
 537                 ring->budget--;
 538                 ring->pkts_processed++;
 539                 if (!ring->budget)
 540                         break;
 541
 542         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 543                 &t_code) == VXGE_HW_OK);
 544
 545         if (first_dtr)
 546                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 547
 548         vxge_debug_entryexit(VXGE_TRACE,
 549                                 "%s:%d  Exiting...",
 550                                 __func__, __LINE__);
 551         return VXGE_HW_OK;
 552 }
 553
 554 /*
 555  * vxge_xmit_compl
 556  *
 557  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 558  * this function is called. It identifies the last TxD whose buffer was
 559  * freed and frees all skbs whose data have already DMA'ed into the NICs
 560  * internal memory.
 561  */
 562 static enum vxge_hw_status
 563 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 564                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 565                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 566 {
 567         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 568         struct sk_buff *skb, **done_skb = *skb_ptr;
 569         int pkt_cnt = 0;
 570
 571         vxge_debug_entryexit(VXGE_TRACE,
 572                 "%s:%d Entered....", __func__, __LINE__);
 573
 574         do {
 575                 int frg_cnt;
 576                 skb_frag_t *frag;
 577                 int i = 0, j;
 578                 struct vxge_tx_priv *txd_priv =
 579                         vxge_hw_fifo_txdl_private_get(dtr);
 580
 581                 skb = txd_priv->skb;
 582                 frg_cnt = skb_shinfo(skb)->nr_frags;
 583                 frag = &skb_shinfo(skb)->frags[0];
 584
 585                 vxge_debug_tx(VXGE_TRACE,
 586                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 587                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 588                                 __LINE__, fifo_hw, dtr, t_code);
 589                 /* check skb validity */
 590                 vxge_assert(skb);
 591                 vxge_debug_tx(VXGE_TRACE,
 592                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 593                         fifo->ndev->name, __func__, __LINE__,
 594                         skb, txd_priv, frg_cnt);
 595                 if (unlikely(t_code)) {
 596                         fifo->stats.tx_errors++;
 597                         vxge_debug_tx(VXGE_ERR,
 598                                 "%s: tx: dtr %p completed due to "
 599                                 "error t_code %01x", fifo->ndev->name,
 600                                 dtr, t_code);
 601                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 602                 }
 603
 604                 /*  for unfragmented skb */
 605                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 606                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 607
 608                 for (j = 0; j < frg_cnt; j++) {
 609                         pci_unmap_page(fifo->pdev,
 610                                         txd_priv->dma_buffers[i++],
 611                                         frag->size, PCI_DMA_TODEVICE);
 612                         frag += 1;
 613                 }
 614
 615                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 616
 617                 /* Updating the statistics block */
 618                 fifo->stats.tx_frms++;
 619                 fifo->stats.tx_bytes += skb->len;
 620
 621                 *done_skb++ = skb;
 622
 623                 if (--nr_skb <= 0) {
 624                         *more = 1;
 625                         break;
 626                 }
 627
 628                 pkt_cnt++;
 629                 if (pkt_cnt > fifo->indicate_max_pkts)
 630                         break;
 631
 632         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 633                                 &dtr, &t_code) == VXGE_HW_OK);
 634
 635         *skb_ptr = done_skb;
 636         if (netif_tx_queue_stopped(fifo->txq))
 637                 netif_tx_wake_queue(fifo->txq);
 638
 639         vxge_debug_entryexit(VXGE_TRACE,
 640                                 "%s: %s:%d  Exiting...",
 641                                 fifo->ndev->name, __func__, __LINE__);
 642         return VXGE_HW_OK;
 643 }
 644
 645 /* select a vpath to transmit the packet */
 646 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 647 {
 648         u16 queue_len, counter = 0;
 649         if (skb->protocol == htons(ETH_P_IP)) {
 650                 struct iphdr *ip;
 651                 struct tcphdr *th;
 652
 653                 ip = ip_hdr(skb);
 654
 655                 if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
 656                         th = (struct tcphdr *)(((unsigned char *)ip) +
 657                                         ip->ihl*4);
 658
 659                         queue_len = vdev->no_of_vpath;
 660                         counter = (ntohs(th->source) +
 661                                 ntohs(th->dest)) &
 662                                 vdev->vpath_selector[queue_len - 1];
 663                         if (counter >= queue_len)
 664                                 counter = queue_len - 1;
 665                 }
 666         }
 667         return counter;
 668 }
 669
 670 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 671         struct vxge_vpath *vpath, u64 del_mac)
 672 {
 673         struct list_head *entry, *next;
 674         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 675                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 676                         return TRUE;
 677         }
 678         return FALSE;
 679 }
 680
 681 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 682 {
 683         struct macInfo mac_info;
 684         u8 *mac_address = NULL;
 685         u64 mac_addr = 0, vpath_vector = 0;
 686         int vpath_idx = 0;
 687         enum vxge_hw_status status = VXGE_HW_OK;
 688         struct vxge_vpath *vpath = NULL;
 689         struct __vxge_hw_device *hldev;
 690
 691         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
 692
 693         mac_address = (u8 *)&mac_addr;
 694         memcpy(mac_address, mac_header, ETH_ALEN);
 695
 696         /* Is this mac address already in the list? */
 697         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 698                 vpath = &vdev->vpaths[vpath_idx];
 699                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 700                         return vpath_idx;
 701         }
 702
 703         memset(&mac_info, 0, sizeof(struct macInfo));
 704         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 705
 706         /* Any vpath has room to add mac address to its da table? */
 707         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 708                 vpath = &vdev->vpaths[vpath_idx];
 709                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 710                         /* Add this mac address to this vpath */
 711                         mac_info.vpath_no = vpath_idx;
 712                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 713                         status = vxge_add_mac_addr(vdev, &mac_info);
 714                         if (status != VXGE_HW_OK)
 715                                 return -EPERM;
 716                         return vpath_idx;
 717                 }
 718         }
 719
 720         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 721         vpath_idx = 0;
 722         mac_info.vpath_no = vpath_idx;
 723         /* Is the first vpath already selected as catch-basin ? */
 724         vpath = &vdev->vpaths[vpath_idx];
 725         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 726                 /* Add this mac address to this vpath */
 727                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 728                         return -EPERM;
 729                 return vpath_idx;
 730         }
 731
 732         /* Select first vpath as catch-basin */
 733         vpath_vector = vxge_mBIT(vpath->device_id);
 734         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 735                                 vxge_hw_mgmt_reg_type_mrpcim,
 736                                 0,
 737                                 (ulong)offsetof(
 738                                         struct vxge_hw_mrpcim_reg,
 739                                         rts_mgr_cbasin_cfg),
 740                                 vpath_vector);
 741         if (status != VXGE_HW_OK) {
 742                 vxge_debug_tx(VXGE_ERR,
 743                         "%s: Unable to set the vpath-%d in catch-basin mode",
 744                         VXGE_DRIVER_NAME, vpath->device_id);
 745                 return -EPERM;
 746         }
 747
 748         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 749                 return -EPERM;
 750
 751         return vpath_idx;
 752 }
 753
 754 /**
 755  * vxge_xmit
 756  * @skb : the socket buffer containing the Tx data.
 757  * @dev : device pointer.
 758  *
 759  * This function is the Tx entry point of the driver. Neterion NIC supports
 760  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 761 */
 762 static netdev_tx_t
 763 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 764 {
 765         struct vxge_fifo *fifo = NULL;
 766         void *dtr_priv;
 767         void *dtr = NULL;
 768         struct vxgedev *vdev = NULL;
 769         enum vxge_hw_status status;
 770         int frg_cnt, first_frg_len;
 771         skb_frag_t *frag;
 772         int i = 0, j = 0, avail;
 773         u64 dma_pointer;
 774         struct vxge_tx_priv *txdl_priv = NULL;
 775         struct __vxge_hw_fifo *fifo_hw;
 776         int offload_type;
 777         int vpath_no = 0;
 778
 779         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 780                         dev->name, __func__, __LINE__);
 781
 782         /* A buffer with no data will be dropped */
 783         if (unlikely(skb->len <= 0)) {
 784                 vxge_debug_tx(VXGE_ERR,
 785                         "%s: Buffer has no data..", dev->name);
 786                 dev_kfree_skb(skb);
 787                 return NETDEV_TX_OK;
 788         }
 789
 790         vdev = netdev_priv(dev);
 791
 792         if (unlikely(!is_vxge_card_up(vdev))) {
 793                 vxge_debug_tx(VXGE_ERR,
 794                         "%s: vdev not initialized", dev->name);
 795                 dev_kfree_skb(skb);
 796                 return NETDEV_TX_OK;
 797         }
 798
 799         if (vdev->config.addr_learn_en) {
 800                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 801                 if (vpath_no == -EPERM) {
 802                         vxge_debug_tx(VXGE_ERR,
 803                                 "%s: Failed to store the mac address",
 804                                 dev->name);
 805                         dev_kfree_skb(skb);
 806                         return NETDEV_TX_OK;
 807                 }
 808         }
 809
 810         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 811                 vpath_no = skb_get_queue_mapping(skb);
 812         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 813                 vpath_no = vxge_get_vpath_no(vdev, skb);
 814
 815         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 816
 817         if (vpath_no >= vdev->no_of_vpath)
 818                 vpath_no = 0;
 819
 820         fifo = &vdev->vpaths[vpath_no].fifo;
 821         fifo_hw = fifo->handle;
 822
 823         if (netif_tx_queue_stopped(fifo->txq))
 824                 return NETDEV_TX_BUSY;
 825
 826         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 827         if (avail == 0) {
 828                 vxge_debug_tx(VXGE_ERR,
 829                         "%s: No free TXDs available", dev->name);
 830                 fifo->stats.txd_not_free++;
 831                 goto _exit0;
 832         }
 833
 834         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 835          * completion will resume the queue.
 836          */
 837         if (avail == 1)
 838                 netif_tx_stop_queue(fifo->txq);
 839
 840         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 841         if (unlikely(status != VXGE_HW_OK)) {
 842                 vxge_debug_tx(VXGE_ERR,
 843                    "%s: Out of descriptors .", dev->name);
 844                 fifo->stats.txd_out_of_desc++;
 845                 goto _exit0;
 846         }
 847
 848         vxge_debug_tx(VXGE_TRACE,
 849                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 850                 dev->name, __func__, __LINE__,
 851                 fifo_hw, dtr, dtr_priv);
 852
 853         if (vlan_tx_tag_present(skb)) {
 854                 u16 vlan_tag = vlan_tx_tag_get(skb);
 855                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 856         }
 857
 858         first_frg_len = skb_headlen(skb);
 859
 860         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 861                                 PCI_DMA_TODEVICE);
 862
 863         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 864                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 865                 fifo->stats.pci_map_fail++;
 866                 goto _exit0;
 867         }
 868
 869         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 870         txdl_priv->skb = skb;
 871         txdl_priv->dma_buffers[j] = dma_pointer;
 872
 873         frg_cnt = skb_shinfo(skb)->nr_frags;
 874         vxge_debug_tx(VXGE_TRACE,
 875                         "%s: %s:%d skb = %p txdl_priv = %p "
 876                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 877                         __func__, __LINE__, skb, txdl_priv,
 878                         frg_cnt, (unsigned long long)dma_pointer);
 879
 880         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 881                 first_frg_len);
 882
 883         frag = &skb_shinfo(skb)->frags[0];
 884         for (i = 0; i < frg_cnt; i++) {
 885                 /* ignore 0 length fragment */
 886                 if (!frag->size)
 887                         continue;
 888
 889                 dma_pointer = (u64) pci_map_page(fifo->pdev, frag->page,
 890                                 frag->page_offset, frag->size,
 891                                 PCI_DMA_TODEVICE);
 892
 893                 if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
 894                         goto _exit2;
 895                 vxge_debug_tx(VXGE_TRACE,
 896                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 897                                 dev->name, __func__, __LINE__, i,
 898                                 (unsigned long long)dma_pointer);
 899
 900                 txdl_priv->dma_buffers[j] = dma_pointer;
 901                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 902                                         frag->size);
 903                 frag += 1;
 904         }
 905
 906         offload_type = vxge_offload_type(skb);
 907
 908         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 909                 int mss = vxge_tcp_mss(skb);
 910                 if (mss) {
 911                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 912                                 dev->name, __func__, __LINE__, mss);
 913                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 914                 } else {
 915                         vxge_assert(skb->len <=
 916                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 917                         vxge_assert(0);
 918                         goto _exit1;
 919                 }
 920         }
 921
 922         if (skb->ip_summed == CHECKSUM_PARTIAL)
 923                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 924                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 925                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 926                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 927
 928         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 929
 930         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 931                 dev->name, __func__, __LINE__);
 932         return NETDEV_TX_OK;
 933
 934 _exit2:
 935         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 936 _exit1:
 937         j = 0;
 938         frag = &skb_shinfo(skb)->frags[0];
 939
 940         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 941                         skb_headlen(skb), PCI_DMA_TODEVICE);
 942
 943         for (; j < i; j++) {
 944                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 945                         frag->size, PCI_DMA_TODEVICE);
 946                 frag += 1;
 947         }
 948
 949         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 950 _exit0:
 951         netif_tx_stop_queue(fifo->txq);
 952         dev_kfree_skb(skb);
 953
 954         return NETDEV_TX_OK;
 955 }
 956
 957 /*
 958  * vxge_rx_term
 959  *
 960  * Function will be called by hw function to abort all outstanding receive
 961  * descriptors.
 962  */
 963 static void
 964 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
 965 {
 966         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 967         struct vxge_rx_priv *rx_priv =
 968                 vxge_hw_ring_rxd_private_get(dtrh);
 969
 970         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 971                         ring->ndev->name, __func__, __LINE__);
 972         if (state != VXGE_HW_RXD_STATE_POSTED)
 973                 return;
 974
 975         pci_unmap_single(ring->pdev, rx_priv->data_dma,
 976                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 977
 978         dev_kfree_skb(rx_priv->skb);
 979         rx_priv->skb_data = NULL;
 980
 981         vxge_debug_entryexit(VXGE_TRACE,
 982                 "%s: %s:%d  Exiting...",
 983                 ring->ndev->name, __func__, __LINE__);
 984 }
 985
 986 /*
 987  * vxge_tx_term
 988  *
 989  * Function will be called to abort all outstanding tx descriptors
 990  */
 991 static void
 992 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
 993 {
 994         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 995         skb_frag_t *frag;
 996         int i = 0, j, frg_cnt;
 997         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
 998         struct sk_buff *skb = txd_priv->skb;
 999
1000         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1001
1002         if (state != VXGE_HW_TXDL_STATE_POSTED)
1003                 return;
1004
1005         /* check skb validity */
1006         vxge_assert(skb);
1007         frg_cnt = skb_shinfo(skb)->nr_frags;
1008         frag = &skb_shinfo(skb)->frags[0];
1009
1010         /*  for unfragmented skb */
1011         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1012                 skb_headlen(skb), PCI_DMA_TODEVICE);
1013
1014         for (j = 0; j < frg_cnt; j++) {
1015                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1016                                frag->size, PCI_DMA_TODEVICE);
1017                 frag += 1;
1018         }
1019
1020         dev_kfree_skb(skb);
1021
1022         vxge_debug_entryexit(VXGE_TRACE,
1023                 "%s:%d  Exiting...", __func__, __LINE__);
1024 }
1025
1026 /**
1027  * vxge_set_multicast
1028  * @dev: pointer to the device structure
1029  *
1030  * Entry point for multicast address enable/disable
1031  * This function is a driver entry point which gets called by the kernel
1032  * whenever multicast addresses must be enabled/disabled. This also gets
1033  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1034  * determine, if multicast address must be enabled or if promiscuous mode
1035  * is to be disabled etc.
1036  */
1037 static void vxge_set_multicast(struct net_device *dev)
1038 {
1039         struct netdev_hw_addr *ha;
1040         struct vxgedev *vdev;
1041         int i, mcast_cnt = 0;
1042         struct __vxge_hw_device *hldev;
1043         struct vxge_vpath *vpath;
1044         enum vxge_hw_status status = VXGE_HW_OK;
1045         struct macInfo mac_info;
1046         int vpath_idx = 0;
1047         struct vxge_mac_addrs *mac_entry;
1048         struct list_head *list_head;
1049         struct list_head *entry, *next;
1050         u8 *mac_address = NULL;
1051
1052         vxge_debug_entryexit(VXGE_TRACE,
1053                 "%s:%d", __func__, __LINE__);
1054
1055         vdev = netdev_priv(dev);
1056         hldev = (struct __vxge_hw_device  *)vdev->devh;
1057
1058         if (unlikely(!is_vxge_card_up(vdev)))
1059                 return;
1060
1061         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1062                 for (i = 0; i < vdev->no_of_vpath; i++) {
1063                         vpath = &vdev->vpaths[i];
1064                         vxge_assert(vpath->is_open);
1065                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1066                         if (status != VXGE_HW_OK)
1067                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1068                                                 "multicast, status %d", status);
1069                         vdev->all_multi_flg = 1;
1070                 }
1071         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1072                 for (i = 0; i < vdev->no_of_vpath; i++) {
1073                         vpath = &vdev->vpaths[i];
1074                         vxge_assert(vpath->is_open);
1075                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1076                         if (status != VXGE_HW_OK)
1077                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1078                                                 "multicast, status %d", status);
1079                         vdev->all_multi_flg = 0;
1080                 }
1081         }
1082
1083
1084         if (!vdev->config.addr_learn_en) {
1085                 for (i = 0; i < vdev->no_of_vpath; i++) {
1086                         vpath = &vdev->vpaths[i];
1087                         vxge_assert(vpath->is_open);
1088
1089                         if (dev->flags & IFF_PROMISC)
1090                                 status = vxge_hw_vpath_promisc_enable(
1091                                         vpath->handle);
1092                         else
1093                                 status = vxge_hw_vpath_promisc_disable(
1094                                         vpath->handle);
1095                         if (status != VXGE_HW_OK)
1096                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1097                                         ", status %d", dev->flags&IFF_PROMISC ?
1098                                         "enable" : "disable", status);
1099                 }
1100         }
1101
1102         memset(&mac_info, 0, sizeof(struct macInfo));
1103         /* Update individual M_CAST address list */
1104         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1105                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1106                 list_head = &vdev->vpaths[0].mac_addr_list;
1107                 if ((netdev_mc_count(dev) +
1108                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1109                                 vdev->vpaths[0].max_mac_addr_cnt)
1110                         goto _set_all_mcast;
1111
1112                 /* Delete previous MC's */
1113                 for (i = 0; i < mcast_cnt; i++) {
1114                         list_for_each_safe(entry, next, list_head) {
1115                                 mac_entry = (struct vxge_mac_addrs *)entry;
1116                                 /* Copy the mac address to delete */
1117                                 mac_address = (u8 *)&mac_entry->macaddr;
1118                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1119
1120                                 /* Is this a multicast address */
1121                                 if (0x01 & mac_info.macaddr[0]) {
1122                                         for (vpath_idx = 0; vpath_idx <
1123                                                 vdev->no_of_vpath;
1124                                                 vpath_idx++) {
1125                                                 mac_info.vpath_no = vpath_idx;
1126                                                 status = vxge_del_mac_addr(
1127                                                                 vdev,
1128                                                                 &mac_info);
1129                                         }
1130                                 }
1131                         }
1132                 }
1133
1134                 /* Add new ones */
1135                 netdev_for_each_mc_addr(ha, dev) {
1136                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1137                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1138                                         vpath_idx++) {
1139                                 mac_info.vpath_no = vpath_idx;
1140                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1141                                 status = vxge_add_mac_addr(vdev, &mac_info);
1142                                 if (status != VXGE_HW_OK) {
1143                                         vxge_debug_init(VXGE_ERR,
1144                                                 "%s:%d Setting individual"
1145                                                 "multicast address failed",
1146                                                 __func__, __LINE__);
1147                                         goto _set_all_mcast;
1148                                 }
1149                         }
1150                 }
1151
1152                 return;
1153 _set_all_mcast:
1154                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1155                 /* Delete previous MC's */
1156                 for (i = 0; i < mcast_cnt; i++) {
1157                         list_for_each_safe(entry, next, list_head) {
1158                                 mac_entry = (struct vxge_mac_addrs *)entry;
1159                                 /* Copy the mac address to delete */
1160                                 mac_address = (u8 *)&mac_entry->macaddr;
1161                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1162
1163                                 /* Is this a multicast address */
1164                                 if (0x01 & mac_info.macaddr[0])
1165                                         break;
1166                         }
1167
1168                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1169                                         vpath_idx++) {
1170                                 mac_info.vpath_no = vpath_idx;
1171                                 status = vxge_del_mac_addr(vdev, &mac_info);
1172                         }
1173                 }
1174
1175                 /* Enable all multicast */
1176                 for (i = 0; i < vdev->no_of_vpath; i++) {
1177                         vpath = &vdev->vpaths[i];
1178                         vxge_assert(vpath->is_open);
1179
1180                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1181                         if (status != VXGE_HW_OK) {
1182                                 vxge_debug_init(VXGE_ERR,
1183                                         "%s:%d Enabling all multicasts failed",
1184                                          __func__, __LINE__);
1185                         }
1186                         vdev->all_multi_flg = 1;
1187                 }
1188                 dev->flags |= IFF_ALLMULTI;
1189         }
1190
1191         vxge_debug_entryexit(VXGE_TRACE,
1192                 "%s:%d  Exiting...", __func__, __LINE__);
1193 }
1194
1195 /**
1196  * vxge_set_mac_addr
1197  * @dev: pointer to the device structure
1198  *
1199  * Update entry "0" (default MAC addr)
1200  */
1201 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1202 {
1203         struct sockaddr *addr = p;
1204         struct vxgedev *vdev;
1205         struct __vxge_hw_device *hldev;
1206         enum vxge_hw_status status = VXGE_HW_OK;
1207         struct macInfo mac_info_new, mac_info_old;
1208         int vpath_idx = 0;
1209
1210         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1211
1212         vdev = netdev_priv(dev);
1213         hldev = vdev->devh;
1214
1215         if (!is_valid_ether_addr(addr->sa_data))
1216                 return -EINVAL;
1217
1218         memset(&mac_info_new, 0, sizeof(struct macInfo));
1219         memset(&mac_info_old, 0, sizeof(struct macInfo));
1220
1221         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1222                 __func__, __LINE__);
1223
1224         /* Get the old address */
1225         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1226
1227         /* Copy the new address */
1228         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1229
1230         /* First delete the old mac address from all the vpaths
1231         as we can't specify the index while adding new mac address */
1232         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1233                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1234                 if (!vpath->is_open) {
1235                         /* This can happen when this interface is added/removed
1236                         to the bonding interface. Delete this station address
1237                         from the linked list */
1238                         vxge_mac_list_del(vpath, &mac_info_old);
1239
1240                         /* Add this new address to the linked list
1241                         for later restoring */
1242                         vxge_mac_list_add(vpath, &mac_info_new);
1243
1244                         continue;
1245                 }
1246                 /* Delete the station address */
1247                 mac_info_old.vpath_no = vpath_idx;
1248                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1249         }
1250
1251         if (unlikely(!is_vxge_card_up(vdev))) {
1252                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1253                 return VXGE_HW_OK;
1254         }
1255
1256         /* Set this mac address to all the vpaths */
1257         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1258                 mac_info_new.vpath_no = vpath_idx;
1259                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1260                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1261                 if (status != VXGE_HW_OK)
1262                         return -EINVAL;
1263         }
1264
1265         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1266
1267         return status;
1268 }
1269
1270 /*
1271  * vxge_vpath_intr_enable
1272  * @vdev: pointer to vdev
1273  * @vp_id: vpath for which to enable the interrupts
1274  *
1275  * Enables the interrupts for the vpath
1276 */
1277 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1278 {
1279         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1280         int msix_id = 0;
1281         int tim_msix_id[4] = {0, 1, 0, 0};
1282         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1283
1284         vxge_hw_vpath_intr_enable(vpath->handle);
1285
1286         if (vdev->config.intr_type == INTA)
1287                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1288         else {
1289                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1290                         alarm_msix_id);
1291
1292                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1293                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1294                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1295
1296                 /* enable the alarm vector */
1297                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1298                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1299                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1300         }
1301 }
1302
1303 /*
1304  * vxge_vpath_intr_disable
1305  * @vdev: pointer to vdev
1306  * @vp_id: vpath for which to disable the interrupts
1307  *
1308  * Disables the interrupts for the vpath
1309 */
1310 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1311 {
1312         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1313         struct __vxge_hw_device *hldev;
1314         int msix_id;
1315
1316         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
1317
1318         vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1319
1320         vxge_hw_vpath_intr_disable(vpath->handle);
1321
1322         if (vdev->config.intr_type == INTA)
1323                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1324         else {
1325                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1326                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1327                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1328
1329                 /* disable the alarm vector */
1330                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1331                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1332                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1333         }
1334 }
1335
1336 /*
1337  * vxge_reset_vpath
1338  * @vdev: pointer to vdev
1339  * @vp_id: vpath to reset
1340  *
1341  * Resets the vpath
1342 */
1343 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1344 {
1345         enum vxge_hw_status status = VXGE_HW_OK;
1346         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1347         int ret = 0;
1348
1349         /* check if device is down already */
1350         if (unlikely(!is_vxge_card_up(vdev)))
1351                 return 0;
1352
1353         /* is device reset already scheduled */
1354         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1355                 return 0;
1356
1357         if (vpath->handle) {
1358                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1359                         if (is_vxge_card_up(vdev) &&
1360                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1361                                         != VXGE_HW_OK) {
1362                                 vxge_debug_init(VXGE_ERR,
1363                                         "vxge_hw_vpath_recover_from_reset"
1364                                         "failed for vpath:%d", vp_id);
1365                                 return status;
1366                         }
1367                 } else {
1368                         vxge_debug_init(VXGE_ERR,
1369                                 "vxge_hw_vpath_reset failed for"
1370                                 "vpath:%d", vp_id);
1371                                 return status;
1372                 }
1373         } else
1374                 return VXGE_HW_FAIL;
1375
1376         vxge_restore_vpath_mac_addr(vpath);
1377         vxge_restore_vpath_vid_table(vpath);
1378
1379         /* Enable all broadcast */
1380         vxge_hw_vpath_bcast_enable(vpath->handle);
1381
1382         /* Enable all multicast */
1383         if (vdev->all_multi_flg) {
1384                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1385                 if (status != VXGE_HW_OK)
1386                         vxge_debug_init(VXGE_ERR,
1387                                 "%s:%d Enabling multicast failed",
1388                                 __func__, __LINE__);
1389         }
1390
1391         /* Enable the interrupts */
1392         vxge_vpath_intr_enable(vdev, vp_id);
1393
1394         smp_wmb();
1395
1396         /* Enable the flow of traffic through the vpath */
1397         vxge_hw_vpath_enable(vpath->handle);
1398
1399         smp_wmb();
1400         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1401         vpath->ring.last_status = VXGE_HW_OK;
1402
1403         /* Vpath reset done */
1404         clear_bit(vp_id, &vdev->vp_reset);
1405
1406         /* Start the vpath queue */
1407         if (netif_tx_queue_stopped(vpath->fifo.txq))
1408                 netif_tx_wake_queue(vpath->fifo.txq);
1409
1410         return ret;
1411 }
1412
1413 static int do_vxge_reset(struct vxgedev *vdev, int event)
1414 {
1415         enum vxge_hw_status status;
1416         int ret = 0, vp_id, i;
1417
1418         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1419
1420         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1421                 /* check if device is down already */
1422                 if (unlikely(!is_vxge_card_up(vdev)))
1423                         return 0;
1424
1425                 /* is reset already scheduled */
1426                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1427                         return 0;
1428         }
1429
1430         if (event == VXGE_LL_FULL_RESET) {
1431                 /* wait for all the vpath reset to complete */
1432                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1433                         while (test_bit(vp_id, &vdev->vp_reset))
1434                                 msleep(50);
1435                 }
1436
1437                 /* if execution mode is set to debug, don't reset the adapter */
1438                 if (unlikely(vdev->exec_mode)) {
1439                         vxge_debug_init(VXGE_ERR,
1440                                 "%s: execution mode is debug, returning..",
1441                                 vdev->ndev->name);
1442                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1443                         netif_tx_stop_all_queues(vdev->ndev);
1444                         return 0;
1445                 }
1446         }
1447
1448         if (event == VXGE_LL_FULL_RESET) {
1449                 vxge_hw_device_wait_receive_idle(vdev->devh);
1450                 vxge_hw_device_intr_disable(vdev->devh);
1451
1452                 switch (vdev->cric_err_event) {
1453                 case VXGE_HW_EVENT_UNKNOWN:
1454                         netif_tx_stop_all_queues(vdev->ndev);
1455                         vxge_debug_init(VXGE_ERR,
1456                                 "fatal: %s: Disabling device due to"
1457                                 "unknown error",
1458                                 vdev->ndev->name);
1459                         ret = -EPERM;
1460                         goto out;
1461                 case VXGE_HW_EVENT_RESET_START:
1462                         break;
1463                 case VXGE_HW_EVENT_RESET_COMPLETE:
1464                 case VXGE_HW_EVENT_LINK_DOWN:
1465                 case VXGE_HW_EVENT_LINK_UP:
1466                 case VXGE_HW_EVENT_ALARM_CLEARED:
1467                 case VXGE_HW_EVENT_ECCERR:
1468                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1469                         ret = -EPERM;
1470                         goto out;
1471                 case VXGE_HW_EVENT_FIFO_ERR:
1472                 case VXGE_HW_EVENT_VPATH_ERR:
1473                         break;
1474                 case VXGE_HW_EVENT_CRITICAL_ERR:
1475                         netif_tx_stop_all_queues(vdev->ndev);
1476                         vxge_debug_init(VXGE_ERR,
1477                                 "fatal: %s: Disabling device due to"
1478                                 "serious error",
1479                                 vdev->ndev->name);
1480                         /* SOP or device reset required */
1481                         /* This event is not currently used */
1482                         ret = -EPERM;
1483                         goto out;
1484                 case VXGE_HW_EVENT_SERR:
1485                         netif_tx_stop_all_queues(vdev->ndev);
1486                         vxge_debug_init(VXGE_ERR,
1487                                 "fatal: %s: Disabling device due to"
1488                                 "serious error",
1489                                 vdev->ndev->name);
1490                         ret = -EPERM;
1491                         goto out;
1492                 case VXGE_HW_EVENT_SRPCIM_SERR:
1493                 case VXGE_HW_EVENT_MRPCIM_SERR:
1494                         ret = -EPERM;
1495                         goto out;
1496                 case VXGE_HW_EVENT_SLOT_FREEZE:
1497                         netif_tx_stop_all_queues(vdev->ndev);
1498                         vxge_debug_init(VXGE_ERR,
1499                                 "fatal: %s: Disabling device due to"
1500                                 "slot freeze",
1501                                 vdev->ndev->name);
1502                         ret = -EPERM;
1503                         goto out;
1504                 default:
1505                         break;
1506
1507                 }
1508         }
1509
1510         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1511                 netif_tx_stop_all_queues(vdev->ndev);
1512
1513         if (event == VXGE_LL_FULL_RESET) {
1514                 status = vxge_reset_all_vpaths(vdev);
1515                 if (status != VXGE_HW_OK) {
1516                         vxge_debug_init(VXGE_ERR,
1517                                 "fatal: %s: can not reset vpaths",
1518                                 vdev->ndev->name);
1519                         ret = -EPERM;
1520                         goto out;
1521                 }
1522         }
1523
1524         if (event == VXGE_LL_COMPL_RESET) {
1525                 for (i = 0; i < vdev->no_of_vpath; i++)
1526                         if (vdev->vpaths[i].handle) {
1527                                 if (vxge_hw_vpath_recover_from_reset(
1528                                         vdev->vpaths[i].handle)
1529                                                 != VXGE_HW_OK) {
1530                                         vxge_debug_init(VXGE_ERR,
1531                                                 "vxge_hw_vpath_recover_"
1532                                                 "from_reset failed for vpath: "
1533                                                 "%d", i);
1534                                         ret = -EPERM;
1535                                         goto out;
1536                                 }
1537                                 } else {
1538                                         vxge_debug_init(VXGE_ERR,
1539                                         "vxge_hw_vpath_reset failed for "
1540                                                 "vpath:%d", i);
1541                                         ret = -EPERM;
1542                                         goto out;
1543                                 }
1544         }
1545
1546         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1547                 /* Reprogram the DA table with populated mac addresses */
1548                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1549                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1550                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1551                 }
1552
1553                 /* enable vpath interrupts */
1554                 for (i = 0; i < vdev->no_of_vpath; i++)
1555                         vxge_vpath_intr_enable(vdev, i);
1556
1557                 vxge_hw_device_intr_enable(vdev->devh);
1558
1559                 smp_wmb();
1560
1561                 /* Indicate card up */
1562                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1563
1564                 /* Get the traffic to flow through the vpaths */
1565                 for (i = 0; i < vdev->no_of_vpath; i++) {
1566                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1567                         smp_wmb();
1568                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1569                 }
1570
1571                 netif_tx_wake_all_queues(vdev->ndev);
1572         }
1573
1574 out:
1575         vxge_debug_entryexit(VXGE_TRACE,
1576                 "%s:%d  Exiting...", __func__, __LINE__);
1577
1578         /* Indicate reset done */
1579         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1580                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1581         return ret;
1582 }
1583
1584 /*
1585  * vxge_reset
1586  * @vdev: pointer to ll device
1587  *
1588  * driver may reset the chip on events of serr, eccerr, etc
1589  */
1590 static int vxge_reset(struct vxgedev *vdev)
1591 {
1592         return do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1593 }
1594
1595 /**
1596  * vxge_poll - Receive handler when Receive Polling is used.
1597  * @dev: pointer to the device structure.
1598  * @budget: Number of packets budgeted to be processed in this iteration.
1599  *
1600  * This function comes into picture only if Receive side is being handled
1601  * through polling (called NAPI in linux). It mostly does what the normal
1602  * Rx interrupt handler does in terms of descriptor and packet processing
1603  * but not in an interrupt context. Also it will process a specified number
1604  * of packets at most in one iteration. This value is passed down by the
1605  * kernel as the function argument 'budget'.
1606  */
1607 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1608 {
1609         struct vxge_ring *ring =
1610                 container_of(napi, struct vxge_ring, napi);
1611         int budget_org = budget;
1612         ring->budget = budget;
1613
1614         vxge_hw_vpath_poll_rx(ring->handle);
1615
1616         if (ring->pkts_processed < budget_org) {
1617                 napi_complete(napi);
1618                 /* Re enable the Rx interrupts for the vpath */
1619                 vxge_hw_channel_msix_unmask(
1620                                 (struct __vxge_hw_channel *)ring->handle,
1621                                 ring->rx_vector_no);
1622         }
1623
1624         return ring->pkts_processed;
1625 }
1626
1627 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1628 {
1629         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1630         int pkts_processed = 0;
1631         int i;
1632         int budget_org = budget;
1633         struct vxge_ring *ring;
1634
1635         struct __vxge_hw_device *hldev = (struct __vxge_hw_device *)
1636                 pci_get_drvdata(vdev->pdev);
1637
1638         for (i = 0; i < vdev->no_of_vpath; i++) {
1639                 ring = &vdev->vpaths[i].ring;
1640                 ring->budget = budget;
1641                 vxge_hw_vpath_poll_rx(ring->handle);
1642                 pkts_processed += ring->pkts_processed;
1643                 budget -= ring->pkts_processed;
1644                 if (budget <= 0)
1645                         break;
1646         }
1647
1648         VXGE_COMPLETE_ALL_TX(vdev);
1649
1650         if (pkts_processed < budget_org) {
1651                 napi_complete(napi);
1652                 /* Re enable the Rx interrupts for the ring */
1653                 vxge_hw_device_unmask_all(hldev);
1654                 vxge_hw_device_flush_io(hldev);
1655         }
1656
1657         return pkts_processed;
1658 }
1659
1660 #ifdef CONFIG_NET_POLL_CONTROLLER
1661 /**
1662  * vxge_netpoll - netpoll event handler entry point
1663  * @dev : pointer to the device structure.
1664  * Description:
1665  *      This function will be called by upper layer to check for events on the
1666  * interface in situations where interrupts are disabled. It is used for
1667  * specific in-kernel networking tasks, such as remote consoles and kernel
1668  * debugging over the network (example netdump in RedHat).
1669  */
1670 static void vxge_netpoll(struct net_device *dev)
1671 {
1672         struct __vxge_hw_device *hldev;
1673         struct vxgedev *vdev;
1674
1675         vdev = netdev_priv(dev);
1676         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
1677
1678         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1679
1680         if (pci_channel_offline(vdev->pdev))
1681                 return;
1682
1683         disable_irq(dev->irq);
1684         vxge_hw_device_clear_tx_rx(hldev);
1685
1686         vxge_hw_device_clear_tx_rx(hldev);
1687         VXGE_COMPLETE_ALL_RX(vdev);
1688         VXGE_COMPLETE_ALL_TX(vdev);
1689
1690         enable_irq(dev->irq);
1691
1692         vxge_debug_entryexit(VXGE_TRACE,
1693                 "%s:%d  Exiting...", __func__, __LINE__);
1694 }
1695 #endif
1696
1697 /* RTH configuration */
1698 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1699 {
1700         enum vxge_hw_status status = VXGE_HW_OK;
1701         struct vxge_hw_rth_hash_types hash_types;
1702         u8 itable[256] = {0}; /* indirection table */
1703         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1704         int index;
1705
1706         /*
1707          * Filling
1708          *      - itable with bucket numbers
1709          *      - mtable with bucket-to-vpath mapping
1710          */
1711         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1712                 itable[index] = index;
1713                 mtable[index] = index % vdev->no_of_vpath;
1714         }
1715
1716         /* set indirection table, bucket-to-vpath mapping */
1717         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1718                                                 vdev->no_of_vpath,
1719                                                 mtable, itable,
1720                                                 vdev->config.rth_bkt_sz);
1721         if (status != VXGE_HW_OK) {
1722                 vxge_debug_init(VXGE_ERR,
1723                         "RTH indirection table configuration failed "
1724                         "for vpath:%d", vdev->vpaths[0].device_id);
1725                 return status;
1726         }
1727
1728         /* Fill RTH hash types */
1729         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1730         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1731         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1732         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1733         hash_types.hash_type_tcpipv6ex_en =
1734                                         vdev->config.rth_hash_type_tcpipv6ex;
1735         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1736
1737         /*
1738          * Because the itable_set() method uses the active_table field
1739          * for the target virtual path the RTH config should be updated
1740          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1741          * when steering frames.
1742          */
1743          for (index = 0; index < vdev->no_of_vpath; index++) {
1744                 status = vxge_hw_vpath_rts_rth_set(
1745                                 vdev->vpaths[index].handle,
1746                                 vdev->config.rth_algorithm,
1747                                 &hash_types,
1748                                 vdev->config.rth_bkt_sz);
1749
1750                  if (status != VXGE_HW_OK) {
1751                         vxge_debug_init(VXGE_ERR,
1752                                 "RTH configuration failed for vpath:%d",
1753                                 vdev->vpaths[index].device_id);
1754                         return status;
1755                  }
1756          }
1757
1758         return status;
1759 }
1760
1761 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
1762 {
1763         struct vxge_mac_addrs *new_mac_entry;
1764         u8 *mac_address = NULL;
1765
1766         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
1767                 return TRUE;
1768
1769         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
1770         if (!new_mac_entry) {
1771                 vxge_debug_mem(VXGE_ERR,
1772                         "%s: memory allocation failed",
1773                         VXGE_DRIVER_NAME);
1774                 return FALSE;
1775         }
1776
1777         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
1778
1779         /* Copy the new mac address to the list */
1780         mac_address = (u8 *)&new_mac_entry->macaddr;
1781         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1782
1783         new_mac_entry->state = mac->state;
1784         vpath->mac_addr_cnt++;
1785
1786         /* Is this a multicast address */
1787         if (0x01 & mac->macaddr[0])
1788                 vpath->mcast_addr_cnt++;
1789
1790         return TRUE;
1791 }
1792
1793 /* Add a mac address to DA table */
1794 static enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev,
1795                                              struct macInfo *mac)
1796 {
1797         enum vxge_hw_status status = VXGE_HW_OK;
1798         struct vxge_vpath *vpath;
1799         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
1800
1801         if (0x01 & mac->macaddr[0]) /* multicast address */
1802                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
1803         else
1804                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
1805
1806         vpath = &vdev->vpaths[mac->vpath_no];
1807         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
1808                                                 mac->macmask, duplicate_mode);
1809         if (status != VXGE_HW_OK) {
1810                 vxge_debug_init(VXGE_ERR,
1811                         "DA config add entry failed for vpath:%d",
1812                         vpath->device_id);
1813         } else
1814                 if (FALSE == vxge_mac_list_add(vpath, mac))
1815                         status = -EPERM;
1816
1817         return status;
1818 }
1819
1820 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1821 {
1822         struct list_head *entry, *next;
1823         u64 del_mac = 0;
1824         u8 *mac_address = (u8 *)(&del_mac);
1825
1826         /* Copy the mac address to delete from the list */
1827         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1828
1829         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1830                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1831                         list_del(entry);
1832                         kfree((struct vxge_mac_addrs *)entry);
1833                         vpath->mac_addr_cnt--;
1834
1835                         /* Is this a multicast address */
1836                         if (0x01 & mac->macaddr[0])
1837                                 vpath->mcast_addr_cnt--;
1838                         return TRUE;
1839                 }
1840         }
1841
1842         return FALSE;
1843 }
1844 /* delete a mac address from DA table */
1845 static enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev,
1846                                              struct macInfo *mac)
1847 {
1848         enum vxge_hw_status status = VXGE_HW_OK;
1849         struct vxge_vpath *vpath;
1850
1851         vpath = &vdev->vpaths[mac->vpath_no];
1852         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1853                                                 mac->macmask);
1854         if (status != VXGE_HW_OK) {
1855                 vxge_debug_init(VXGE_ERR,
1856                         "DA config delete entry failed for vpath:%d",
1857                         vpath->device_id);
1858         } else
1859                 vxge_mac_list_del(vpath, mac);
1860         return status;
1861 }
1862
1863 /* list all mac addresses from DA table */
1864 enum vxge_hw_status
1865 static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
1866                                         struct macInfo *mac)
1867 {
1868         enum vxge_hw_status status = VXGE_HW_OK;
1869         unsigned char macmask[ETH_ALEN];
1870         unsigned char macaddr[ETH_ALEN];
1871
1872         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1873                                 macaddr, macmask);
1874         if (status != VXGE_HW_OK) {
1875                 vxge_debug_init(VXGE_ERR,
1876                         "DA config list entry failed for vpath:%d",
1877                         vpath->device_id);
1878                 return status;
1879         }
1880
1881         while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
1882
1883                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1884                                 macaddr, macmask);
1885                 if (status != VXGE_HW_OK)
1886                         break;
1887         }
1888
1889         return status;
1890 }
1891
1892 /* Store all vlan ids from the list to the vid table */
1893 static enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1894 {
1895         enum vxge_hw_status status = VXGE_HW_OK;
1896         struct vxgedev *vdev = vpath->vdev;
1897         u16 vid;
1898
1899         if (vdev->vlgrp && vpath->is_open) {
1900
1901                 for (vid = 0; vid < VLAN_N_VID; vid++) {
1902                         if (!vlan_group_get_device(vdev->vlgrp, vid))
1903                                 continue;
1904                         /* Add these vlan to the vid table */
1905                         status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1906                 }
1907         }
1908
1909         return status;
1910 }
1911
1912 /* Store all mac addresses from the list to the DA table */
1913 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1914 {
1915         enum vxge_hw_status status = VXGE_HW_OK;
1916         struct macInfo mac_info;
1917         u8 *mac_address = NULL;
1918         struct list_head *entry, *next;
1919
1920         memset(&mac_info, 0, sizeof(struct macInfo));
1921
1922         if (vpath->is_open) {
1923
1924                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1925                         mac_address =
1926                                 (u8 *)&
1927                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1928                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1929                         ((struct vxge_mac_addrs *)entry)->state =
1930                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1931                         /* does this mac address already exist in da table? */
1932                         status = vxge_search_mac_addr_in_da_table(vpath,
1933                                 &mac_info);
1934                         if (status != VXGE_HW_OK) {
1935                                 /* Add this mac address to the DA table */
1936                                 status = vxge_hw_vpath_mac_addr_add(
1937                                         vpath->handle, mac_info.macaddr,
1938                                         mac_info.macmask,
1939                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1940                                 if (status != VXGE_HW_OK) {
1941                                         vxge_debug_init(VXGE_ERR,
1942                                             "DA add entry failed for vpath:%d",
1943                                             vpath->device_id);
1944                                         ((struct vxge_mac_addrs *)entry)->state
1945                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1946                                 }
1947                         }
1948                 }
1949         }
1950
1951         return status;
1952 }
1953
1954 /* reset vpaths */
1955 enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1956 {
1957         enum vxge_hw_status status = VXGE_HW_OK;
1958         struct vxge_vpath *vpath;
1959         int i;
1960
1961         for (i = 0; i < vdev->no_of_vpath; i++) {
1962                 vpath = &vdev->vpaths[i];
1963                 if (vpath->handle) {
1964                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1965                                 if (is_vxge_card_up(vdev) &&
1966                                         vxge_hw_vpath_recover_from_reset(
1967                                                 vpath->handle) != VXGE_HW_OK) {
1968                                         vxge_debug_init(VXGE_ERR,
1969                                                 "vxge_hw_vpath_recover_"
1970                                                 "from_reset failed for vpath: "
1971                                                 "%d", i);
1972                                         return status;
1973                                 }
1974                         } else {
1975                                 vxge_debug_init(VXGE_ERR,
1976                                         "vxge_hw_vpath_reset failed for "
1977                                         "vpath:%d", i);
1978                                         return status;
1979                         }
1980                 }
1981         }
1982
1983         return status;
1984 }
1985
1986 /* close vpaths */
1987 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
1988 {
1989         struct vxge_vpath *vpath;
1990         int i;
1991
1992         for (i = index; i < vdev->no_of_vpath; i++) {
1993                 vpath = &vdev->vpaths[i];
1994
1995                 if (vpath->handle && vpath->is_open) {
1996                         vxge_hw_vpath_close(vpath->handle);
1997                         vdev->stats.vpaths_open--;
1998                 }
1999                 vpath->is_open = 0;
2000                 vpath->handle = NULL;
2001         }
2002 }
2003
2004 /* open vpaths */
2005 static int vxge_open_vpaths(struct vxgedev *vdev)
2006 {
2007         struct vxge_hw_vpath_attr attr;
2008         enum vxge_hw_status status;
2009         struct vxge_vpath *vpath;
2010         u32 vp_id = 0;
2011         int i;
2012
2013         for (i = 0; i < vdev->no_of_vpath; i++) {
2014                 vpath = &vdev->vpaths[i];
2015                 vxge_assert(vpath->is_configured);
2016
2017                 if (!vdev->titan1) {
2018                         struct vxge_hw_vp_config *vcfg;
2019                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2020
2021                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2022                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2023                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2024                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2025                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2026                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2027                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2028                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2029                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2030                 }
2031
2032                 attr.vp_id = vpath->device_id;
2033                 attr.fifo_attr.callback = vxge_xmit_compl;
2034                 attr.fifo_attr.txdl_term = vxge_tx_term;
2035                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2036                 attr.fifo_attr.userdata = &vpath->fifo;
2037
2038                 attr.ring_attr.callback = vxge_rx_1b_compl;
2039                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2040                 attr.ring_attr.rxd_term = vxge_rx_term;
2041                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2042                 attr.ring_attr.userdata = &vpath->ring;
2043
2044                 vpath->ring.ndev = vdev->ndev;
2045                 vpath->ring.pdev = vdev->pdev;
2046                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2047                 if (status == VXGE_HW_OK) {
2048                         vpath->fifo.handle =
2049                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2050                         vpath->ring.handle =
2051                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2052                         vpath->fifo.tx_steering_type =
2053                                 vdev->config.tx_steering_type;
2054                         vpath->fifo.ndev = vdev->ndev;
2055                         vpath->fifo.pdev = vdev->pdev;
2056                         if (vdev->config.tx_steering_type)
2057                                 vpath->fifo.txq =
2058                                         netdev_get_tx_queue(vdev->ndev, i);
2059                         else
2060                                 vpath->fifo.txq =
2061                                         netdev_get_tx_queue(vdev->ndev, 0);
2062                         vpath->fifo.indicate_max_pkts =
2063                                 vdev->config.fifo_indicate_max_pkts;
2064                         vpath->ring.rx_vector_no = 0;
2065                         vpath->ring.rx_csum = vdev->rx_csum;
2066                         vpath->ring.rx_hwts = vdev->rx_hwts;
2067                         vpath->is_open = 1;
2068                         vdev->vp_handles[i] = vpath->handle;
2069                         vpath->ring.gro_enable = vdev->config.gro_enable;
2070                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2071                         vdev->stats.vpaths_open++;
2072                 } else {
2073                         vdev->stats.vpath_open_fail++;
2074                         vxge_debug_init(VXGE_ERR,
2075                                 "%s: vpath: %d failed to open "
2076                                 "with status: %d",
2077                             vdev->ndev->name, vpath->device_id,
2078                                 status);
2079                         vxge_close_vpaths(vdev, 0);
2080                         return -EPERM;
2081                 }
2082
2083                 vp_id = vpath->handle->vpath->vp_id;
2084                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2085         }
2086         return VXGE_HW_OK;
2087 }
2088
2089 /*
2090  *  vxge_isr_napi
2091  *  @irq: the irq of the device.
2092  *  @dev_id: a void pointer to the hldev structure of the Titan device
2093  *  @ptregs: pointer to the registers pushed on the stack.
2094  *
2095  *  This function is the ISR handler of the device when napi is enabled. It
2096  *  identifies the reason for the interrupt and calls the relevant service
2097  *  routines.
2098  */
2099 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2100 {
2101         struct net_device *dev;
2102         struct __vxge_hw_device *hldev;
2103         u64 reason;
2104         enum vxge_hw_status status;
2105         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2106
2107         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2108
2109         dev = vdev->ndev;
2110         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2111
2112         if (pci_channel_offline(vdev->pdev))
2113                 return IRQ_NONE;
2114
2115         if (unlikely(!is_vxge_card_up(vdev)))
2116                 return IRQ_HANDLED;
2117
2118         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
2119                         &reason);
2120         if (status == VXGE_HW_OK) {
2121                 vxge_hw_device_mask_all(hldev);
2122
2123                 if (reason &
2124                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2125                         vdev->vpaths_deployed >>
2126                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2127
2128                         vxge_hw_device_clear_tx_rx(hldev);
2129                         napi_schedule(&vdev->napi);
2130                         vxge_debug_intr(VXGE_TRACE,
2131                                 "%s:%d  Exiting...", __func__, __LINE__);
2132                         return IRQ_HANDLED;
2133                 } else
2134                         vxge_hw_device_unmask_all(hldev);
2135         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2136                 (status == VXGE_HW_ERR_CRITICAL) ||
2137                 (status == VXGE_HW_ERR_FIFO))) {
2138                 vxge_hw_device_mask_all(hldev);
2139                 vxge_hw_device_flush_io(hldev);
2140                 return IRQ_HANDLED;
2141         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2142                 return IRQ_HANDLED;
2143
2144         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2145         return IRQ_NONE;
2146 }
2147
2148 #ifdef CONFIG_PCI_MSI
2149
2150 static irqreturn_t
2151 vxge_tx_msix_handle(int irq, void *dev_id)
2152 {
2153         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2154
2155         VXGE_COMPLETE_VPATH_TX(fifo);
2156
2157         return IRQ_HANDLED;
2158 }
2159
2160 static irqreturn_t
2161 vxge_rx_msix_napi_handle(int irq, void *dev_id)
2162 {
2163         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2164
2165         /* MSIX_IDX for Rx is 1 */
2166         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2167                                         ring->rx_vector_no);
2168
2169         napi_schedule(&ring->napi);
2170         return IRQ_HANDLED;
2171 }
2172
2173 static irqreturn_t
2174 vxge_alarm_msix_handle(int irq, void *dev_id)
2175 {
2176         int i;
2177         enum vxge_hw_status status;
2178         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2179         struct vxgedev *vdev = vpath->vdev;
2180         int msix_id = (vpath->handle->vpath->vp_id *
2181                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2182
2183         for (i = 0; i < vdev->no_of_vpath; i++) {
2184                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2185
2186                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2187                         vdev->exec_mode);
2188                 if (status == VXGE_HW_OK) {
2189
2190                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2191                                         msix_id);
2192                         continue;
2193                 }
2194                 vxge_debug_intr(VXGE_ERR,
2195                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2196                         VXGE_DRIVER_NAME, status);
2197         }
2198         return IRQ_HANDLED;
2199 }
2200
2201 static int vxge_alloc_msix(struct vxgedev *vdev)
2202 {
2203         int j, i, ret = 0;
2204         int msix_intr_vect = 0, temp;
2205         vdev->intr_cnt = 0;
2206
2207 start:
2208         /* Tx/Rx MSIX Vectors count */
2209         vdev->intr_cnt = vdev->no_of_vpath * 2;
2210
2211         /* Alarm MSIX Vectors count */
2212         vdev->intr_cnt++;
2213
2214         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2215                                 GFP_KERNEL);
2216         if (!vdev->entries) {
2217                 vxge_debug_init(VXGE_ERR,
2218                         "%s: memory allocation failed",
2219                         VXGE_DRIVER_NAME);
2220                 ret = -ENOMEM;
2221                 goto alloc_entries_failed;
2222         }
2223
2224         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2225                                      sizeof(struct vxge_msix_entry),
2226                                      GFP_KERNEL);
2227         if (!vdev->vxge_entries) {
2228                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2229                         VXGE_DRIVER_NAME);
2230                 ret = -ENOMEM;
2231                 goto alloc_vxge_entries_failed;
2232         }
2233
2234         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2235
2236                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2237
2238                 /* Initialize the fifo vector */
2239                 vdev->entries[j].entry = msix_intr_vect;
2240                 vdev->vxge_entries[j].entry = msix_intr_vect;
2241                 vdev->vxge_entries[j].in_use = 0;
2242                 j++;
2243
2244                 /* Initialize the ring vector */
2245                 vdev->entries[j].entry = msix_intr_vect + 1;
2246                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2247                 vdev->vxge_entries[j].in_use = 0;
2248                 j++;
2249         }
2250
2251         /* Initialize the alarm vector */
2252         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2253         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2254         vdev->vxge_entries[j].in_use = 0;
2255
2256         ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
2257         if (ret > 0) {
2258                 vxge_debug_init(VXGE_ERR,
2259                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2260                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2261                 if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
2262                         ret = -ENODEV;
2263                         goto enable_msix_failed;
2264                 }
2265
2266                 kfree(vdev->entries);
2267                 kfree(vdev->vxge_entries);
2268                 vdev->entries = NULL;
2269                 vdev->vxge_entries = NULL;
2270                 /* Try with less no of vector by reducing no of vpaths count */
2271                 temp = (ret - 1)/2;
2272                 vxge_close_vpaths(vdev, temp);
2273                 vdev->no_of_vpath = temp;
2274                 goto start;
2275         } else if (ret < 0) {
2276                 ret = -ENODEV;
2277                 goto enable_msix_failed;
2278         }
2279         return 0;
2280
2281 enable_msix_failed:
2282         kfree(vdev->vxge_entries);
2283 alloc_vxge_entries_failed:
2284         kfree(vdev->entries);
2285 alloc_entries_failed:
2286         return ret;
2287 }
2288
2289 static int vxge_enable_msix(struct vxgedev *vdev)
2290 {
2291
2292         int i, ret = 0;
2293         /* 0 - Tx, 1 - Rx  */
2294         int tim_msix_id[4] = {0, 1, 0, 0};
2295
2296         vdev->intr_cnt = 0;
2297
2298         /* allocate msix vectors */
2299         ret = vxge_alloc_msix(vdev);
2300         if (!ret) {
2301                 for (i = 0; i < vdev->no_of_vpath; i++) {
2302                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2303
2304                         /* If fifo or ring are not enabled, the MSIX vector for
2305                          * it should be set to 0.
2306                          */
2307                         vpath->ring.rx_vector_no = (vpath->device_id *
2308                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2309
2310                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2311                                                VXGE_ALARM_MSIX_ID);
2312                 }
2313         }
2314
2315         return ret;
2316 }
2317
2318 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2319 {
2320         int intr_cnt;
2321
2322         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2323                 intr_cnt++) {
2324                 if (vdev->vxge_entries[intr_cnt].in_use) {
2325                         synchronize_irq(vdev->entries[intr_cnt].vector);
2326                         free_irq(vdev->entries[intr_cnt].vector,
2327                                 vdev->vxge_entries[intr_cnt].arg);
2328                         vdev->vxge_entries[intr_cnt].in_use = 0;
2329                 }
2330         }
2331
2332         kfree(vdev->entries);
2333         kfree(vdev->vxge_entries);
2334         vdev->entries = NULL;
2335         vdev->vxge_entries = NULL;
2336
2337         if (vdev->config.intr_type == MSI_X)
2338                 pci_disable_msix(vdev->pdev);
2339 }
2340 #endif
2341
2342 static void vxge_rem_isr(struct vxgedev *vdev)
2343 {
2344         struct __vxge_hw_device *hldev;
2345         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);
2346
2347 #ifdef CONFIG_PCI_MSI
2348         if (vdev->config.intr_type == MSI_X) {
2349                 vxge_rem_msix_isr(vdev);
2350         } else
2351 #endif
2352         if (vdev->config.intr_type == INTA) {
2353                         synchronize_irq(vdev->pdev->irq);
2354                         free_irq(vdev->pdev->irq, vdev);
2355         }
2356 }
2357
2358 static int vxge_add_isr(struct vxgedev *vdev)
2359 {
2360         int ret = 0;
2361 #ifdef CONFIG_PCI_MSI
2362         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2363         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2364
2365         if (vdev->config.intr_type == MSI_X)
2366                 ret = vxge_enable_msix(vdev);
2367
2368         if (ret) {
2369                 vxge_debug_init(VXGE_ERR,
2370                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2371                 vxge_debug_init(VXGE_ERR,
2372                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2373                 vdev->config.intr_type = INTA;
2374         }
2375
2376         if (vdev->config.intr_type == MSI_X) {
2377                 for (intr_idx = 0;
2378                      intr_idx < (vdev->no_of_vpath *
2379                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2380
2381                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2382                         irq_req = 0;
2383
2384                         switch (msix_idx) {
2385                         case 0:
2386                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2387                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2388                                         vdev->ndev->name,
2389                                         vdev->entries[intr_cnt].entry,
2390                                         pci_fun, vp_idx);
2391                                 ret = request_irq(
2392                                     vdev->entries[intr_cnt].vector,
2393                                         vxge_tx_msix_handle, 0,
2394                                         vdev->desc[intr_cnt],
2395                                         &vdev->vpaths[vp_idx].fifo);
2396                                         vdev->vxge_entries[intr_cnt].arg =
2397                                                 &vdev->vpaths[vp_idx].fifo;
2398                                 irq_req = 1;
2399                                 break;
2400                         case 1:
2401                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2402                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2403                                         vdev->ndev->name,
2404                                         vdev->entries[intr_cnt].entry,
2405                                         pci_fun, vp_idx);
2406                                 ret = request_irq(
2407                                     vdev->entries[intr_cnt].vector,
2408                                         vxge_rx_msix_napi_handle,
2409                                         0,
2410                                         vdev->desc[intr_cnt],
2411                                         &vdev->vpaths[vp_idx].ring);
2412                                         vdev->vxge_entries[intr_cnt].arg =
2413                                                 &vdev->vpaths[vp_idx].ring;
2414                                 irq_req = 1;
2415                                 break;
2416                         }
2417
2418                         if (ret) {
2419                                 vxge_debug_init(VXGE_ERR,
2420                                         "%s: MSIX - %d  Registration failed",
2421                                         vdev->ndev->name, intr_cnt);
2422                                 vxge_rem_msix_isr(vdev);
2423                                 vdev->config.intr_type = INTA;
2424                                 vxge_debug_init(VXGE_ERR,
2425                                         "%s: Defaulting to INTA"
2426                                         , vdev->ndev->name);
2427                                         goto INTA_MODE;
2428                         }
2429
2430                         if (irq_req) {
2431                                 /* We requested for this msix interrupt */
2432                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2433                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2434                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2435                                 vxge_hw_vpath_msix_unmask(
2436                                         vdev->vpaths[vp_idx].handle,
2437                                         msix_idx);
2438                                 intr_cnt++;
2439                         }
2440
2441                         /* Point to next vpath handler */
2442                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2443                             (vp_idx < (vdev->no_of_vpath - 1)))
2444                                 vp_idx++;
2445                 }
2446
2447                 intr_cnt = vdev->no_of_vpath * 2;
2448                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2449                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2450                         vdev->ndev->name,
2451                         vdev->entries[intr_cnt].entry,
2452                         pci_fun);
2453                 /* For Alarm interrupts */
2454                 ret = request_irq(vdev->entries[intr_cnt].vector,
2455                                         vxge_alarm_msix_handle, 0,
2456                                         vdev->desc[intr_cnt],
2457                                         &vdev->vpaths[0]);
2458                 if (ret) {
2459                         vxge_debug_init(VXGE_ERR,
2460                                 "%s: MSIX - %d Registration failed",
2461                                 vdev->ndev->name, intr_cnt);
2462                         vxge_rem_msix_isr(vdev);
2463                         vdev->config.intr_type = INTA;
2464                         vxge_debug_init(VXGE_ERR,
2465                                 "%s: Defaulting to INTA",
2466                                 vdev->ndev->name);
2467                                 goto INTA_MODE;
2468                 }
2469
2470                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2471                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2472                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2473                                         msix_idx);
2474                 vdev->vxge_entries[intr_cnt].in_use = 1;
2475                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2476         }
2477 INTA_MODE:
2478 #endif
2479
2480         if (vdev->config.intr_type == INTA) {
2481                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2482                         "%s:vxge:INTA", vdev->ndev->name);
2483                 vxge_hw_device_set_intr_type(vdev->devh,
2484                         VXGE_HW_INTR_MODE_IRQLINE);
2485                 vxge_hw_vpath_tti_ci_set(vdev->devh,
2486                         vdev->vpaths[0].device_id);
2487                 ret = request_irq((int) vdev->pdev->irq,
2488                         vxge_isr_napi,
2489                         IRQF_SHARED, vdev->desc[0], vdev);
2490                 if (ret) {
2491                         vxge_debug_init(VXGE_ERR,
2492                                 "%s %s-%d: ISR registration failed",
2493                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2494                         return -ENODEV;
2495                 }
2496                 vxge_debug_init(VXGE_TRACE,
2497                         "new %s-%d line allocated",
2498                         "IRQ", vdev->pdev->irq);
2499         }
2500
2501         return VXGE_HW_OK;
2502 }
2503
2504 static void vxge_poll_vp_reset(unsigned long data)
2505 {
2506         struct vxgedev *vdev = (struct vxgedev *)data;
2507         int i, j = 0;
2508
2509         for (i = 0; i < vdev->no_of_vpath; i++) {
2510                 if (test_bit(i, &vdev->vp_reset)) {
2511                         vxge_reset_vpath(vdev, i);
2512                         j++;
2513                 }
2514         }
2515         if (j && (vdev->config.intr_type != MSI_X)) {
2516                 vxge_hw_device_unmask_all(vdev->devh);
2517                 vxge_hw_device_flush_io(vdev->devh);
2518         }
2519
2520         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2521 }
2522
2523 static void vxge_poll_vp_lockup(unsigned long data)
2524 {
2525         struct vxgedev *vdev = (struct vxgedev *)data;
2526         enum vxge_hw_status status = VXGE_HW_OK;
2527         struct vxge_vpath *vpath;
2528         struct vxge_ring *ring;
2529         int i;
2530
2531         for (i = 0; i < vdev->no_of_vpath; i++) {
2532                 ring = &vdev->vpaths[i].ring;
2533                 /* Did this vpath received any packets */
2534                 if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
2535                         status = vxge_hw_vpath_check_leak(ring->handle);
2536
2537                         /* Did it received any packets last time */
2538                         if ((VXGE_HW_FAIL == status) &&
2539                                 (VXGE_HW_FAIL == ring->last_status)) {
2540
2541                                 /* schedule vpath reset */
2542                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2543                                         vpath = &vdev->vpaths[i];
2544
2545                                         /* disable interrupts for this vpath */
2546                                         vxge_vpath_intr_disable(vdev, i);
2547
2548                                         /* stop the queue for this vpath */
2549                                         netif_tx_stop_queue(vpath->fifo.txq);
2550                                         continue;
2551                                 }
2552                         }
2553                 }
2554                 ring->stats.prev_rx_frms = ring->stats.rx_frms;
2555                 ring->last_status = status;
2556         }
2557
2558         /* Check every 1 milli second */
2559         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2560 }
2561
2562 /**
2563  * vxge_open
2564  * @dev: pointer to the device structure.
2565  *
2566  * This function is the open entry point of the driver. It mainly calls a
2567  * function to allocate Rx buffers and inserts them into the buffer
2568  * descriptors and then enables the Rx part of the NIC.
2569  * Return value: '0' on success and an appropriate (-)ve integer as
2570  * defined in errno.h file on failure.
2571  */
2572 static int
2573 vxge_open(struct net_device *dev)
2574 {
2575         enum vxge_hw_status status;
2576         struct vxgedev *vdev;
2577         struct __vxge_hw_device *hldev;
2578         struct vxge_vpath *vpath;
2579         int ret = 0;
2580         int i;
2581         u64 val64, function_mode;
2582         vxge_debug_entryexit(VXGE_TRACE,
2583                 "%s: %s:%d", dev->name, __func__, __LINE__);
2584
2585         vdev = netdev_priv(dev);
2586         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2587         function_mode = vdev->config.device_hw_info.function_mode;
2588
2589         /* make sure you have link off by default every time Nic is
2590          * initialized */
2591         netif_carrier_off(dev);
2592
2593         /* Open VPATHs */
2594         status = vxge_open_vpaths(vdev);
2595         if (status != VXGE_HW_OK) {
2596                 vxge_debug_init(VXGE_ERR,
2597                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2598                 ret = -EPERM;
2599                 goto out0;
2600         }
2601
2602         vdev->mtu = dev->mtu;
2603
2604         status = vxge_add_isr(vdev);
2605         if (status != VXGE_HW_OK) {
2606                 vxge_debug_init(VXGE_ERR,
2607                         "%s: fatal: ISR add failed", dev->name);
2608                 ret = -EPERM;
2609                 goto out1;
2610         }
2611
2612         if (vdev->config.intr_type != MSI_X) {
2613                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2614                         vdev->config.napi_weight);
2615                 napi_enable(&vdev->napi);
2616                 for (i = 0; i < vdev->no_of_vpath; i++) {
2617                         vpath = &vdev->vpaths[i];
2618                         vpath->ring.napi_p = &vdev->napi;
2619                 }
2620         } else {
2621                 for (i = 0; i < vdev->no_of_vpath; i++) {
2622                         vpath = &vdev->vpaths[i];
2623                         netif_napi_add(dev, &vpath->ring.napi,
2624                             vxge_poll_msix, vdev->config.napi_weight);
2625                         napi_enable(&vpath->ring.napi);
2626                         vpath->ring.napi_p = &vpath->ring.napi;
2627                 }
2628         }
2629
2630         /* configure RTH */
2631         if (vdev->config.rth_steering) {
2632                 status = vxge_rth_configure(vdev);
2633                 if (status != VXGE_HW_OK) {
2634                         vxge_debug_init(VXGE_ERR,
2635                                 "%s: fatal: RTH configuration failed",
2636                                 dev->name);
2637                         ret = -EPERM;
2638                         goto out2;
2639                 }
2640         }
2641         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2642                hldev->config.rth_en ? "enabled" : "disabled");
2643
2644         for (i = 0; i < vdev->no_of_vpath; i++) {
2645                 vpath = &vdev->vpaths[i];
2646
2647                 /* set initial mtu before enabling the device */
2648                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2649                 if (status != VXGE_HW_OK) {
2650                         vxge_debug_init(VXGE_ERR,
2651                                 "%s: fatal: can not set new MTU", dev->name);
2652                         ret = -EPERM;
2653                         goto out2;
2654                 }
2655         }
2656
2657         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2658         vxge_debug_init(vdev->level_trace,
2659                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2660         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2661
2662         /* Restore the DA, VID table and also multicast and promiscuous mode
2663          * states
2664          */
2665         if (vdev->all_multi_flg) {
2666                 for (i = 0; i < vdev->no_of_vpath; i++) {
2667                         vpath = &vdev->vpaths[i];
2668                         vxge_restore_vpath_mac_addr(vpath);
2669                         vxge_restore_vpath_vid_table(vpath);
2670
2671                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2672                         if (status != VXGE_HW_OK)
2673                                 vxge_debug_init(VXGE_ERR,
2674                                         "%s:%d Enabling multicast failed",
2675                                         __func__, __LINE__);
2676                 }
2677         }
2678
2679         /* Enable vpath to sniff all unicast/multicast traffic that not
2680          * addressed to them. We allow promiscous mode for PF only
2681          */
2682
2683         val64 = 0;
2684         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2685                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2686
2687         vxge_hw_mgmt_reg_write(vdev->devh,
2688                 vxge_hw_mgmt_reg_type_mrpcim,
2689                 0,
2690                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2691                         rxmac_authorize_all_addr),
2692                 val64);
2693
2694         vxge_hw_mgmt_reg_write(vdev->devh,
2695                 vxge_hw_mgmt_reg_type_mrpcim,
2696                 0,
2697                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2698                         rxmac_authorize_all_vid),
2699                 val64);
2700
2701         vxge_set_multicast(dev);
2702
2703         /* Enabling Bcast and mcast for all vpath */
2704         for (i = 0; i < vdev->no_of_vpath; i++) {
2705                 vpath = &vdev->vpaths[i];
2706                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2707                 if (status != VXGE_HW_OK)
2708                         vxge_debug_init(VXGE_ERR,
2709                                 "%s : Can not enable bcast for vpath "
2710                                 "id %d", dev->name, i);
2711                 if (vdev->config.addr_learn_en) {
2712                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2713                         if (status != VXGE_HW_OK)
2714                                 vxge_debug_init(VXGE_ERR,
2715                                         "%s : Can not enable mcast for vpath "
2716                                         "id %d", dev->name, i);
2717                 }
2718         }
2719
2720         vxge_hw_device_setpause_data(vdev->devh, 0,
2721                 vdev->config.tx_pause_enable,
2722                 vdev->config.rx_pause_enable);
2723
2724         if (vdev->vp_reset_timer.function == NULL)
2725                 vxge_os_timer(vdev->vp_reset_timer,
2726                         vxge_poll_vp_reset, vdev, (HZ/2));
2727
2728         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2729         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2730                 vxge_os_timer(vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev,
2731                               HZ / 2);
2732
2733         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2734
2735         smp_wmb();
2736
2737         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2738                 netif_carrier_on(vdev->ndev);
2739                 netdev_notice(vdev->ndev, "Link Up\n");
2740                 vdev->stats.link_up++;
2741         }
2742
2743         vxge_hw_device_intr_enable(vdev->devh);
2744
2745         smp_wmb();
2746
2747         for (i = 0; i < vdev->no_of_vpath; i++) {
2748                 vpath = &vdev->vpaths[i];
2749
2750                 vxge_hw_vpath_enable(vpath->handle);
2751                 smp_wmb();
2752                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2753         }
2754
2755         netif_tx_start_all_queues(vdev->ndev);
2756         goto out0;
2757
2758 out2:
2759         vxge_rem_isr(vdev);
2760
2761         /* Disable napi */
2762         if (vdev->config.intr_type != MSI_X)
2763                 napi_disable(&vdev->napi);
2764         else {
2765                 for (i = 0; i < vdev->no_of_vpath; i++)
2766                         napi_disable(&vdev->vpaths[i].ring.napi);
2767         }
2768
2769 out1:
2770         vxge_close_vpaths(vdev, 0);
2771 out0:
2772         vxge_debug_entryexit(VXGE_TRACE,
2773                                 "%s: %s:%d  Exiting...",
2774                                 dev->name, __func__, __LINE__);
2775         return ret;
2776 }
2777
2778 /* Loop throught the mac address list and delete all the entries */
2779 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2780 {
2781
2782         struct list_head *entry, *next;
2783         if (list_empty(&vpath->mac_addr_list))
2784                 return;
2785
2786         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2787                 list_del(entry);
2788                 kfree((struct vxge_mac_addrs *)entry);
2789         }
2790 }
2791
2792 static void vxge_napi_del_all(struct vxgedev *vdev)
2793 {
2794         int i;
2795         if (vdev->config.intr_type != MSI_X)
2796                 netif_napi_del(&vdev->napi);
2797         else {
2798                 for (i = 0; i < vdev->no_of_vpath; i++)
2799                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2800         }
2801 }
2802
2803 static int do_vxge_close(struct net_device *dev, int do_io)
2804 {
2805         enum vxge_hw_status status;
2806         struct vxgedev *vdev;
2807         struct __vxge_hw_device *hldev;
2808         int i;
2809         u64 val64, vpath_vector;
2810         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2811                 dev->name, __func__, __LINE__);
2812
2813         vdev = netdev_priv(dev);
2814         hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev);
2815
2816         if (unlikely(!is_vxge_card_up(vdev)))
2817                 return 0;
2818
2819         /* If vxge_handle_crit_err task is executing,
2820          * wait till it completes. */
2821         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2822                 msleep(50);
2823
2824         if (do_io) {
2825                 /* Put the vpath back in normal mode */
2826                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2827                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2828                                 vxge_hw_mgmt_reg_type_mrpcim,
2829                                 0,
2830                                 (ulong)offsetof(
2831                                         struct vxge_hw_mrpcim_reg,
2832                                         rts_mgr_cbasin_cfg),
2833                                 &val64);
2834
2835                 if (status == VXGE_HW_OK) {
2836                         val64 &= ~vpath_vector;
2837                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2838                                         vxge_hw_mgmt_reg_type_mrpcim,
2839                                         0,
2840                                         (ulong)offsetof(
2841                                                 struct vxge_hw_mrpcim_reg,
2842                                                 rts_mgr_cbasin_cfg),
2843                                         val64);
2844                 }
2845
2846                 /* Remove the function 0 from promiscous mode */
2847                 vxge_hw_mgmt_reg_write(vdev->devh,
2848                         vxge_hw_mgmt_reg_type_mrpcim,
2849                         0,
2850                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2851                                 rxmac_authorize_all_addr),
2852                         0);
2853
2854                 vxge_hw_mgmt_reg_write(vdev->devh,
2855                         vxge_hw_mgmt_reg_type_mrpcim,
2856                         0,
2857                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2858                                 rxmac_authorize_all_vid),
2859                         0);
2860
2861                 smp_wmb();
2862         }
2863
2864         if (vdev->titan1)
2865                 del_timer_sync(&vdev->vp_lockup_timer);
2866
2867         del_timer_sync(&vdev->vp_reset_timer);
2868
2869         if (do_io)
2870                 vxge_hw_device_wait_receive_idle(hldev);
2871
2872         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2873
2874         /* Disable napi */
2875         if (vdev->config.intr_type != MSI_X)
2876                 napi_disable(&vdev->napi);
2877         else {
2878                 for (i = 0; i < vdev->no_of_vpath; i++)
2879                         napi_disable(&vdev->vpaths[i].ring.napi);
2880         }
2881
2882         netif_carrier_off(vdev->ndev);
2883         netdev_notice(vdev->ndev, "Link Down\n");
2884         netif_tx_stop_all_queues(vdev->ndev);
2885
2886         /* Note that at this point xmit() is stopped by upper layer */
2887         if (do_io)
2888                 vxge_hw_device_intr_disable(vdev->devh);
2889
2890         vxge_rem_isr(vdev);
2891
2892         vxge_napi_del_all(vdev);
2893
2894         if (do_io)
2895                 vxge_reset_all_vpaths(vdev);
2896
2897         vxge_close_vpaths(vdev, 0);
2898
2899         vxge_debug_entryexit(VXGE_TRACE,
2900                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
2901
2902         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
2903
2904         return 0;
2905 }
2906
2907 /**
2908  * vxge_close
2909  * @dev: device pointer.
2910  *
2911  * This is the stop entry point of the driver. It needs to undo exactly
2912  * whatever was done by the open entry point, thus it's usually referred to
2913  * as the close function.Among other things this function mainly stops the
2914  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
2915  * Return value: '0' on success and an appropriate (-)ve integer as
2916  * defined in errno.h file on failure.
2917  */
2918 static int
2919 vxge_close(struct net_device *dev)
2920 {
2921         do_vxge_close(dev, 1);
2922         return 0;
2923 }
2924
2925 /**
2926  * vxge_change_mtu
2927  * @dev: net device pointer.
2928  * @new_mtu :the new MTU size for the device.
2929  *
2930  * A driver entry point to change MTU size for the device. Before changing
2931  * the MTU the device must be stopped.
2932  */
2933 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
2934 {
2935         struct vxgedev *vdev = netdev_priv(dev);
2936
2937         vxge_debug_entryexit(vdev->level_trace,
2938                 "%s:%d", __func__, __LINE__);
2939         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
2940                 vxge_debug_init(vdev->level_err,
2941                         "%s: mtu size is invalid", dev->name);
2942                 return -EPERM;
2943         }
2944
2945         /* check if device is down already */
2946         if (unlikely(!is_vxge_card_up(vdev))) {
2947                 /* just store new value, will use later on open() */
2948                 dev->mtu = new_mtu;
2949                 vxge_debug_init(vdev->level_err,
2950                         "%s", "device is down on MTU change");
2951                 return 0;
2952         }
2953
2954         vxge_debug_init(vdev->level_trace,
2955                 "trying to apply new MTU %d", new_mtu);
2956
2957         if (vxge_close(dev))
2958                 return -EIO;
2959
2960         dev->mtu = new_mtu;
2961         vdev->mtu = new_mtu;
2962
2963         if (vxge_open(dev))
2964                 return -EIO;
2965
2966         vxge_debug_init(vdev->level_trace,
2967                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
2968
2969         vxge_debug_entryexit(vdev->level_trace,
2970                 "%s:%d  Exiting...", __func__, __LINE__);
2971
2972         return 0;
2973 }
2974
2975 /**
2976  * vxge_get_stats64
2977  * @dev: pointer to the device structure
2978  * @stats: pointer to struct rtnl_link_stats64
2979  *
2980  */
2981 static struct rtnl_link_stats64 *
2982 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
2983 {
2984         struct vxgedev *vdev = netdev_priv(dev);
2985         int k;
2986
2987         /* net_stats already zeroed by caller */
2988         for (k = 0; k < vdev->no_of_vpath; k++) {
2989                 net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
2990                 net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
2991                 net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
2992                 net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
2993                 net_stats->rx_dropped +=
2994                         vdev->vpaths[k].ring.stats.rx_dropped;
2995
2996                 net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
2997                 net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
2998                 net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
2999         }
3000
3001         return net_stats;
3002 }
3003
3004 static enum vxge_hw_status vxge_timestamp_config(struct vxgedev *vdev,
3005                                                  int enable)
3006 {
3007         enum vxge_hw_status status;
3008         u64 val64;
3009
3010         /* Timestamp is passed to the driver via the FCS, therefore we
3011          * must disable the FCS stripping by the adapter.  Since this is
3012          * required for the driver to load (due to a hardware bug),
3013          * there is no need to do anything special here.
3014          */
3015         if (enable)
3016                 val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3017                         VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3018                         VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3019         else
3020                 val64 = 0;
3021
3022         status = vxge_hw_mgmt_reg_write(vdev->devh,
3023                                         vxge_hw_mgmt_reg_type_mrpcim,
3024                                         0,
3025                                         offsetof(struct vxge_hw_mrpcim_reg,
3026                                                  xmac_timestamp),
3027                                         val64);
3028         vxge_hw_device_flush_io(vdev->devh);
3029         return status;
3030 }
3031
3032 static int vxge_hwtstamp_ioctl(struct vxgedev *vdev, void __user *data)
3033 {
3034         struct hwtstamp_config config;
3035         enum vxge_hw_status status;
3036         int i;
3037
3038         if (copy_from_user(&config, data, sizeof(config)))
3039                 return -EFAULT;
3040
3041         /* reserved for future extensions */
3042         if (config.flags)
3043                 return -EINVAL;
3044
3045         /* Transmit HW Timestamp not supported */
3046         switch (config.tx_type) {
3047         case HWTSTAMP_TX_OFF:
3048                 break;
3049         case HWTSTAMP_TX_ON:
3050         default:
3051                 return -ERANGE;
3052         }
3053
3054         switch (config.rx_filter) {
3055         case HWTSTAMP_FILTER_NONE:
3056                 status = vxge_timestamp_config(vdev, 0);
3057                 if (status != VXGE_HW_OK)
3058                         return -EFAULT;
3059
3060                 vdev->rx_hwts = 0;
3061                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3062                 break;
3063
3064         case HWTSTAMP_FILTER_ALL:
3065         case HWTSTAMP_FILTER_SOME:
3066         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3067         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3068         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3069         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3070         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3071         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3072         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3073         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3074         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3075         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3076         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3077         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3078                 status = vxge_timestamp_config(vdev, 1);
3079                 if (status != VXGE_HW_OK)
3080                         return -EFAULT;
3081
3082                 vdev->rx_hwts = 1;
3083                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3084                 break;
3085
3086         default:
3087                  return -ERANGE;
3088         }
3089
3090         for (i = 0; i < vdev->no_of_vpath; i++)
3091                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3092
3093         if (copy_to_user(data, &config, sizeof(config)))
3094                 return -EFAULT;
3095
3096         return 0;
3097 }
3098
3099 /**
3100  * vxge_ioctl
3101  * @dev: Device pointer.
3102  * @ifr: An IOCTL specific structure, that can contain a pointer to
3103  *       a proprietary structure used to pass information to the driver.
3104  * @cmd: This is used to distinguish between the different commands that
3105  *       can be passed to the IOCTL functions.
3106  *
3107  * Entry point for the Ioctl.
3108  */
3109 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3110 {
3111         struct vxgedev *vdev = netdev_priv(dev);
3112         int ret;
3113
3114         switch (cmd) {
3115         case SIOCSHWTSTAMP:
3116                 ret = vxge_hwtstamp_ioctl(vdev, rq->ifr_data);
3117                 if (ret)
3118                         return ret;
3119                 break;
3120         default:
3121                 return -EOPNOTSUPP;
3122         }
3123
3124         return 0;
3125 }
3126
3127 /**
3128  * vxge_tx_watchdog
3129  * @dev: pointer to net device structure
3130  *
3131  * Watchdog for transmit side.
3132  * This function is triggered if the Tx Queue is stopped
3133  * for a pre-defined amount of time when the Interface is still up.
3134  */
3135 static void
3136 vxge_tx_watchdog(struct net_device *dev)
3137 {
3138         struct vxgedev *vdev;
3139
3140         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3141
3142         vdev = netdev_priv(dev);
3143
3144         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3145
3146         vxge_reset(vdev);
3147         vxge_debug_entryexit(VXGE_TRACE,
3148                 "%s:%d  Exiting...", __func__, __LINE__);
3149 }
3150
3151 /**
3152  * vxge_vlan_rx_register
3153  * @dev: net device pointer.
3154  * @grp: vlan group
3155  *
3156  * Vlan group registration
3157  */
3158 static void
3159 vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
3160 {
3161         struct vxgedev *vdev;
3162         struct vxge_vpath *vpath;
3163         int vp;
3164         u64 vid;
3165         enum vxge_hw_status status;
3166         int i;
3167
3168         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3169
3170         vdev = netdev_priv(dev);
3171
3172         vpath = &vdev->vpaths[0];
3173         if ((NULL == grp) && (vpath->is_open)) {
3174                 /* Get the first vlan */
3175                 status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3176
3177                 while (status == VXGE_HW_OK) {
3178
3179                         /* Delete this vlan from the vid table */
3180                         for (vp = 0; vp < vdev->no_of_vpath; vp++) {
3181                                 vpath = &vdev->vpaths[vp];
3182                                 if (!vpath->is_open)
3183                                         continue;
3184
3185                                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3186                         }
3187
3188                         /* Get the next vlan to be deleted */
3189                         vpath = &vdev->vpaths[0];
3190                         status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
3191                 }
3192         }
3193
3194         vdev->vlgrp = grp;
3195
3196         for (i = 0; i < vdev->no_of_vpath; i++) {
3197                 if (vdev->vpaths[i].is_configured)
3198                         vdev->vpaths[i].ring.vlgrp = grp;
3199         }
3200
3201         vxge_debug_entryexit(VXGE_TRACE,
3202                 "%s:%d  Exiting...", __func__, __LINE__);
3203 }
3204
3205 /**
3206  * vxge_vlan_rx_add_vid
3207  * @dev: net device pointer.
3208  * @vid: vid
3209  *
3210  * Add the vlan id to the devices vlan id table
3211  */
3212 static void
3213 vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
3214 {
3215         struct vxgedev *vdev;
3216         struct vxge_vpath *vpath;
3217         int vp_id;
3218
3219         vdev = netdev_priv(dev);
3220
3221         /* Add these vlan to the vid table */
3222         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3223                 vpath = &vdev->vpaths[vp_id];
3224                 if (!vpath->is_open)
3225                         continue;
3226                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3227         }
3228 }
3229
3230 /**
3231  * vxge_vlan_rx_add_vid
3232  * @dev: net device pointer.
3233  * @vid: vid
3234  *
3235  * Remove the vlan id from the device's vlan id table
3236  */
3237 static void
3238 vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
3239 {
3240         struct vxgedev *vdev;
3241         struct vxge_vpath *vpath;
3242         int vp_id;
3243
3244         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3245
3246         vdev = netdev_priv(dev);
3247
3248         vlan_group_set_device(vdev->vlgrp, vid, NULL);
3249
3250         /* Delete this vlan from the vid table */
3251         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3252                 vpath = &vdev->vpaths[vp_id];
3253                 if (!vpath->is_open)
3254                         continue;
3255                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3256         }
3257         vxge_debug_entryexit(VXGE_TRACE,
3258                 "%s:%d  Exiting...", __func__, __LINE__);
3259 }
3260
3261 static const struct net_device_ops vxge_netdev_ops = {
3262         .ndo_open               = vxge_open,
3263         .ndo_stop               = vxge_close,
3264         .ndo_get_stats64        = vxge_get_stats64,
3265         .ndo_start_xmit         = vxge_xmit,
3266         .ndo_validate_addr      = eth_validate_addr,
3267         .ndo_set_multicast_list = vxge_set_multicast,
3268
3269         .ndo_do_ioctl           = vxge_ioctl,
3270
3271         .ndo_set_mac_address    = vxge_set_mac_addr,
3272         .ndo_change_mtu         = vxge_change_mtu,
3273         .ndo_vlan_rx_register   = vxge_vlan_rx_register,
3274         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3275         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3276
3277         .ndo_tx_timeout         = vxge_tx_watchdog,
3278 #ifdef CONFIG_NET_POLL_CONTROLLER
3279         .ndo_poll_controller    = vxge_netpoll,
3280 #endif
3281 };
3282
3283 static int __devinit vxge_device_revision(struct vxgedev *vdev)
3284 {
3285         int ret;
3286         u8 revision;
3287
3288         ret = pci_read_config_byte(vdev->pdev, PCI_REVISION_ID, &revision);
3289         if (ret)
3290                 return -EIO;
3291
3292         vdev->titan1 = (revision == VXGE_HW_TITAN1_PCI_REVISION);
3293         return 0;
3294 }
3295
3296 static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
3297                                           struct vxge_config *config,
3298                                           int high_dma, int no_of_vpath,
3299                                           struct vxgedev **vdev_out)
3300 {
3301         struct net_device *ndev;
3302         enum vxge_hw_status status = VXGE_HW_OK;
3303         struct vxgedev *vdev;
3304         int ret = 0, no_of_queue = 1;
3305         u64 stat;
3306
3307         *vdev_out = NULL;
3308         if (config->tx_steering_type)
3309                 no_of_queue = no_of_vpath;
3310
3311         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3312                         no_of_queue);
3313         if (ndev == NULL) {
3314                 vxge_debug_init(
3315                         vxge_hw_device_trace_level_get(hldev),
3316                 "%s : device allocation failed", __func__);
3317                 ret = -ENODEV;
3318                 goto _out0;
3319         }
3320
3321         vxge_debug_entryexit(
3322                 vxge_hw_device_trace_level_get(hldev),
3323                 "%s: %s:%d  Entering...",
3324                 ndev->name, __func__, __LINE__);
3325
3326         vdev = netdev_priv(ndev);
3327         memset(vdev, 0, sizeof(struct vxgedev));
3328
3329         vdev->ndev = ndev;
3330         vdev->devh = hldev;
3331         vdev->pdev = hldev->pdev;
3332         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3333         vdev->rx_csum = 1;      /* Enable Rx CSUM by default. */
3334         vdev->rx_hwts = 0;
3335
3336         ret = vxge_device_revision(vdev);
3337         if (ret < 0)
3338                 goto _out1;
3339
3340         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3341
3342         ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
3343                                 NETIF_F_HW_VLAN_FILTER;
3344         /*  Driver entry points */
3345         ndev->irq = vdev->pdev->irq;
3346         ndev->base_addr = (unsigned long) hldev->bar0;
3347
3348         ndev->netdev_ops = &vxge_netdev_ops;
3349
3350         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3351
3352         vxge_initialize_ethtool_ops(ndev);
3353
3354         if (vdev->config.rth_steering != NO_STEERING) {
3355                 ndev->features |= NETIF_F_RXHASH;
3356                 hldev->config.rth_en = VXGE_HW_RTH_ENABLE;
3357         }
3358
3359         /* Allocate memory for vpath */
3360         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3361                                 no_of_vpath, GFP_KERNEL);
3362         if (!vdev->vpaths) {
3363                 vxge_debug_init(VXGE_ERR,
3364                         "%s: vpath memory allocation failed",
3365                         vdev->ndev->name);
3366                 ret = -ENODEV;
3367                 goto _out1;
3368         }
3369
3370         ndev->features |= NETIF_F_SG;
3371
3372         ndev->features |= NETIF_F_HW_CSUM;
3373         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3374                 "%s : checksuming enabled", __func__);
3375
3376         if (high_dma) {
3377                 ndev->features |= NETIF_F_HIGHDMA;
3378                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3379                         "%s : using High DMA", __func__);
3380         }
3381
3382         ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
3383
3384         if (vdev->config.gro_enable)
3385                 ndev->features |= NETIF_F_GRO;
3386
3387         if (register_netdev(ndev)) {
3388                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3389                         "%s: %s : device registration failed!",
3390                         ndev->name, __func__);
3391                 ret = -ENODEV;
3392                 goto _out2;
3393         }
3394
3395         /*  Set the factory defined MAC address initially */
3396         ndev->addr_len = ETH_ALEN;
3397
3398         /* Make Link state as off at this point, when the Link change
3399          * interrupt comes the state will be automatically changed to
3400          * the right state.
3401          */
3402         netif_carrier_off(ndev);
3403
3404         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3405                 "%s: Ethernet device registered",
3406                 ndev->name);
3407
3408         hldev->ndev = ndev;
3409         *vdev_out = vdev;
3410
3411         /* Resetting the Device stats */
3412         status = vxge_hw_mrpcim_stats_access(
3413                                 hldev,
3414                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3415                                 0,
3416                                 0,
3417                                 &stat);
3418
3419         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3420                 vxge_debug_init(
3421                         vxge_hw_device_trace_level_get(hldev),
3422                         "%s: device stats clear returns"
3423                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3424
3425         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3426                 "%s: %s:%d  Exiting...",
3427                 ndev->name, __func__, __LINE__);
3428
3429         return ret;
3430 _out2:
3431         kfree(vdev->vpaths);
3432 _out1:
3433         free_netdev(ndev);
3434 _out0:
3435         return ret;
3436 }
3437
3438 /*
3439  * vxge_device_unregister
3440  *
3441  * This function will unregister and free network device
3442  */
3443 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3444 {
3445         struct vxgedev *vdev;
3446         struct net_device *dev;
3447         char buf[IFNAMSIZ];
3448
3449         dev = hldev->ndev;
3450         vdev = netdev_priv(dev);
3451
3452         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3453                              __func__, __LINE__);
3454
3455         memcpy(buf, dev->name, IFNAMSIZ);
3456
3457         /* in 2.6 will call stop() if device is up */
3458         unregister_netdev(dev);
3459
3460         flush_scheduled_work();
3461
3462         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3463                         buf);
3464         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3465                              __func__, __LINE__);
3466 }
3467
3468 /*
3469  * vxge_callback_crit_err
3470  *
3471  * This function is called by the alarm handler in interrupt context.
3472  * Driver must analyze it based on the event type.
3473  */
3474 static void
3475 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3476                         enum vxge_hw_event type, u64 vp_id)
3477 {
3478         struct net_device *dev = hldev->ndev;
3479         struct vxgedev *vdev = netdev_priv(dev);
3480         struct vxge_vpath *vpath = NULL;
3481         int vpath_idx;
3482
3483         vxge_debug_entryexit(vdev->level_trace,
3484                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3485
3486         /* Note: This event type should be used for device wide
3487          * indications only - Serious errors, Slot freeze and critical errors
3488          */
3489         vdev->cric_err_event = type;
3490
3491         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3492                 vpath = &vdev->vpaths[vpath_idx];
3493                 if (vpath->device_id == vp_id)
3494                         break;
3495         }
3496
3497         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3498                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3499                         vxge_debug_init(VXGE_ERR,
3500                                 "%s: Slot is frozen", vdev->ndev->name);
3501                 } else if (type == VXGE_HW_EVENT_SERR) {
3502                         vxge_debug_init(VXGE_ERR,
3503                                 "%s: Encountered Serious Error",
3504                                 vdev->ndev->name);
3505                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3506                         vxge_debug_init(VXGE_ERR,
3507                                 "%s: Encountered Critical Error",
3508                                 vdev->ndev->name);
3509         }
3510
3511         if ((type == VXGE_HW_EVENT_SERR) ||
3512                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3513                 if (unlikely(vdev->exec_mode))
3514                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3515         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3516                 vxge_hw_device_mask_all(hldev);
3517                 if (unlikely(vdev->exec_mode))
3518                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3519         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3520                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3521
3522                 if (unlikely(vdev->exec_mode))
3523                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3524                 else {
3525                         /* check if this vpath is already set for reset */
3526                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3527
3528                                 /* disable interrupts for this vpath */
3529                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3530
3531                                 /* stop the queue for this vpath */
3532                                 netif_tx_stop_queue(vpath->fifo.txq);
3533                         }
3534                 }
3535         }
3536
3537         vxge_debug_entryexit(vdev->level_trace,
3538                 "%s: %s:%d  Exiting...",
3539                 vdev->ndev->name, __func__, __LINE__);
3540 }
3541
3542 static void verify_bandwidth(void)
3543 {
3544         int i, band_width, total = 0, equal_priority = 0;
3545
3546         /* 1. If user enters 0 for some fifo, give equal priority to all */
3547         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3548                 if (bw_percentage[i] == 0) {
3549                         equal_priority = 1;
3550                         break;
3551                 }
3552         }
3553
3554         if (!equal_priority) {
3555                 /* 2. If sum exceeds 100, give equal priority to all */
3556                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3557                         if (bw_percentage[i] == 0xFF)
3558                                 break;
3559
3560                         total += bw_percentage[i];
3561                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3562                                 equal_priority = 1;
3563                                 break;
3564                         }
3565                 }
3566         }
3567
3568         if (!equal_priority) {
3569                 /* Is all the bandwidth consumed? */
3570                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3571                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3572                                 /* Split rest of bw equally among next VPs*/
3573                                 band_width =
3574                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3575                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3576                                 if (band_width < 2) /* min of 2% */
3577                                         equal_priority = 1;
3578                                 else {
3579                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3580                                                 i++)
3581                                                 bw_percentage[i] =
3582                                                         band_width;
3583                                 }
3584                         }
3585                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3586                         equal_priority = 1;
3587         }
3588
3589         if (equal_priority) {
3590                 vxge_debug_init(VXGE_ERR,
3591                         "%s: Assigning equal bandwidth to all the vpaths",
3592                         VXGE_DRIVER_NAME);
3593                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3594                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3595                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3596                         bw_percentage[i] = bw_percentage[0];
3597         }
3598 }
3599
3600 /*
3601  * Vpath configuration
3602  */
3603 static int __devinit vxge_config_vpaths(
3604                         struct vxge_hw_device_config *device_config,
3605                         u64 vpath_mask, struct vxge_config *config_param)
3606 {
3607         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3608         u32 txdl_size, txdl_per_memblock;
3609
3610         temp = driver_config->vpath_per_dev;
3611         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3612                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3613                 /* No more CPU. Return vpath number as zero.*/
3614                 if (driver_config->g_no_cpus == -1)
3615                         return 0;
3616
3617                 if (!driver_config->g_no_cpus)
3618                         driver_config->g_no_cpus = num_online_cpus();
3619
3620                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3621                 if (!driver_config->vpath_per_dev)
3622                         driver_config->vpath_per_dev = 1;
3623
3624                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3625                         if (!vxge_bVALn(vpath_mask, i, 1))
3626                                 continue;
3627                         else
3628                                 default_no_vpath++;
3629                 if (default_no_vpath < driver_config->vpath_per_dev)
3630                         driver_config->vpath_per_dev = default_no_vpath;
3631
3632                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3633                                 (driver_config->vpath_per_dev * 2);
3634                 if (driver_config->g_no_cpus <= 0)
3635                         driver_config->g_no_cpus = -1;
3636         }
3637
3638         if (driver_config->vpath_per_dev == 1) {
3639                 vxge_debug_ll_config(VXGE_TRACE,
3640                         "%s: Disable tx and rx steering, "
3641                         "as single vpath is configured", VXGE_DRIVER_NAME);
3642                 config_param->rth_steering = NO_STEERING;
3643                 config_param->tx_steering_type = NO_STEERING;
3644                 device_config->rth_en = 0;
3645         }
3646
3647         /* configure bandwidth */
3648         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3649                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3650
3651         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3652                 device_config->vp_config[i].vp_id = i;
3653                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3654                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3655                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3656                                 vxge_debug_ll_config(VXGE_TRACE,
3657                                         "%s: vpath: %d is not available",
3658                                         VXGE_DRIVER_NAME, i);
3659                                 continue;
3660                         } else {
3661                                 vxge_debug_ll_config(VXGE_TRACE,
3662                                         "%s: vpath: %d available",
3663                                         VXGE_DRIVER_NAME, i);
3664                                 no_of_vpaths++;
3665                         }
3666                 } else {
3667                         vxge_debug_ll_config(VXGE_TRACE,
3668                                 "%s: vpath: %d is not configured, "
3669                                 "max_config_vpath exceeded",
3670                                 VXGE_DRIVER_NAME, i);
3671                         break;
3672                 }
3673
3674                 /* Configure Tx fifo's */
3675                 device_config->vp_config[i].fifo.enable =
3676                                                 VXGE_HW_FIFO_ENABLE;
3677                 device_config->vp_config[i].fifo.max_frags =
3678                                 MAX_SKB_FRAGS + 1;
3679                 device_config->vp_config[i].fifo.memblock_size =
3680                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3681
3682                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3683                                 sizeof(struct vxge_hw_fifo_txd);
3684                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3685
3686                 device_config->vp_config[i].fifo.fifo_blocks =
3687                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3688
3689                 device_config->vp_config[i].fifo.intr =
3690                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3691
3692                 /* Configure tti properties */
3693                 device_config->vp_config[i].tti.intr_enable =
3694                                         VXGE_HW_TIM_INTR_ENABLE;
3695
3696                 device_config->vp_config[i].tti.btimer_val =
3697                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3698
3699                 device_config->vp_config[i].tti.timer_ac_en =
3700                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3701
3702                 /* For msi-x with napi (each vector
3703                 has a handler of its own) -
3704                 Set CI to OFF for all vpaths */
3705                 device_config->vp_config[i].tti.timer_ci_en =
3706                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3707
3708                 device_config->vp_config[i].tti.timer_ri_en =
3709                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3710
3711                 device_config->vp_config[i].tti.util_sel =
3712                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3713
3714                 device_config->vp_config[i].tti.ltimer_val =
3715                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3716
3717                 device_config->vp_config[i].tti.rtimer_val =
3718                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3719
3720                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3721                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3722                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3723                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3724                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3725                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3726                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3727
3728                 /* Configure Rx rings */
3729                 device_config->vp_config[i].ring.enable  =
3730                                                 VXGE_HW_RING_ENABLE;
3731
3732                 device_config->vp_config[i].ring.ring_blocks  =
3733                                                 VXGE_HW_DEF_RING_BLOCKS;
3734                 device_config->vp_config[i].ring.buffer_mode =
3735                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3736                 device_config->vp_config[i].ring.rxds_limit  =
3737                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3738                 device_config->vp_config[i].ring.scatter_mode =
3739                                         VXGE_HW_RING_SCATTER_MODE_A;
3740
3741                 /* Configure rti properties */
3742                 device_config->vp_config[i].rti.intr_enable =
3743                                         VXGE_HW_TIM_INTR_ENABLE;
3744
3745                 device_config->vp_config[i].rti.btimer_val =
3746                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3747
3748                 device_config->vp_config[i].rti.timer_ac_en =
3749                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3750
3751                 device_config->vp_config[i].rti.timer_ci_en =
3752                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3753
3754                 device_config->vp_config[i].rti.timer_ri_en =
3755                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3756
3757                 device_config->vp_config[i].rti.util_sel =
3758                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3759
3760                 device_config->vp_config[i].rti.urange_a =
3761                                                 RTI_RX_URANGE_A;
3762                 device_config->vp_config[i].rti.urange_b =
3763                                                 RTI_RX_URANGE_B;
3764                 device_config->vp_config[i].rti.urange_c =
3765                                                 RTI_RX_URANGE_C;
3766                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3767                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3768                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3769                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3770
3771                 device_config->vp_config[i].rti.rtimer_val =
3772                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3773
3774                 device_config->vp_config[i].rti.ltimer_val =
3775                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3776
3777                 device_config->vp_config[i].rpa_strip_vlan_tag =
3778                         vlan_tag_strip;
3779         }
3780
3781         driver_config->vpath_per_dev = temp;
3782         return no_of_vpaths;
3783 }
3784
3785 /* initialize device configuratrions */
3786 static void __devinit vxge_device_config_init(
3787                                 struct vxge_hw_device_config *device_config,
3788                                 int *intr_type)
3789 {
3790         /* Used for CQRQ/SRQ. */
3791         device_config->dma_blockpool_initial =
3792                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3793
3794         device_config->dma_blockpool_max =
3795                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3796
3797         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3798                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3799
3800 #ifndef CONFIG_PCI_MSI
3801         vxge_debug_init(VXGE_ERR,
3802                 "%s: This Kernel does not support "
3803                 "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3804         *intr_type = INTA;
3805 #endif
3806
3807         /* Configure whether MSI-X or IRQL. */
3808         switch (*intr_type) {
3809         case INTA:
3810                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3811                 break;
3812
3813         case MSI_X:
3814                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
3815                 break;
3816         }
3817         /* Timer period between device poll */
3818         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3819
3820         /* Configure mac based steering. */
3821         device_config->rts_mac_en = addr_learn_en;
3822
3823         /* Configure Vpaths */
3824         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3825
3826         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3827                         __func__);
3828         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
3829                         device_config->dma_blockpool_initial);
3830         vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
3831                         device_config->dma_blockpool_max);
3832         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3833                         device_config->intr_mode);
3834         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3835                         device_config->device_poll_millis);
3836         vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
3837                         device_config->rts_mac_en);
3838         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3839                         device_config->rth_en);
3840         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3841                         device_config->rth_it_type);
3842 }
3843
3844 static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3845 {
3846         int i;
3847
3848         vxge_debug_init(VXGE_TRACE,
3849                 "%s: %d Vpath(s) opened",
3850                 vdev->ndev->name, vdev->no_of_vpath);
3851
3852         switch (vdev->config.intr_type) {
3853         case INTA:
3854                 vxge_debug_init(VXGE_TRACE,
3855                         "%s: Interrupt type INTA", vdev->ndev->name);
3856                 break;
3857
3858         case MSI_X:
3859                 vxge_debug_init(VXGE_TRACE,
3860                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3861                 break;
3862         }
3863
3864         if (vdev->config.rth_steering) {
3865                 vxge_debug_init(VXGE_TRACE,
3866                         "%s: RTH steering enabled for TCP_IPV4",
3867                         vdev->ndev->name);
3868         } else {
3869                 vxge_debug_init(VXGE_TRACE,
3870                         "%s: RTH steering disabled", vdev->ndev->name);
3871         }
3872
3873         switch (vdev->config.tx_steering_type) {
3874         case NO_STEERING:
3875                 vxge_debug_init(VXGE_TRACE,
3876                         "%s: Tx steering disabled", vdev->ndev->name);
3877                 break;
3878         case TX_PRIORITY_STEERING:
3879                 vxge_debug_init(VXGE_TRACE,
3880                         "%s: Unsupported tx steering option",
3881                         vdev->ndev->name);
3882                 vxge_debug_init(VXGE_TRACE,
3883                         "%s: Tx steering disabled", vdev->ndev->name);
3884                 vdev->config.tx_steering_type = 0;
3885                 break;
3886         case TX_VLAN_STEERING:
3887                 vxge_debug_init(VXGE_TRACE,
3888                         "%s: Unsupported tx steering option",
3889                         vdev->ndev->name);
3890                 vxge_debug_init(VXGE_TRACE,
3891                         "%s: Tx steering disabled", vdev->ndev->name);
3892                 vdev->config.tx_steering_type = 0;
3893                 break;
3894         case TX_MULTIQ_STEERING:
3895                 vxge_debug_init(VXGE_TRACE,
3896                         "%s: Tx multiqueue steering enabled",
3897                         vdev->ndev->name);
3898                 break;
3899         case TX_PORT_STEERING:
3900                 vxge_debug_init(VXGE_TRACE,
3901                         "%s: Tx port steering enabled",
3902                         vdev->ndev->name);
3903                 break;
3904         default:
3905                 vxge_debug_init(VXGE_ERR,
3906                         "%s: Unsupported tx steering type",
3907                         vdev->ndev->name);
3908                 vxge_debug_init(VXGE_TRACE,
3909                         "%s: Tx steering disabled", vdev->ndev->name);
3910                 vdev->config.tx_steering_type = 0;
3911         }
3912
3913         if (vdev->config.gro_enable) {
3914                 vxge_debug_init(VXGE_ERR,
3915                         "%s: Generic receive offload enabled",
3916                         vdev->ndev->name);
3917         } else
3918                 vxge_debug_init(VXGE_TRACE,
3919                         "%s: Generic receive offload disabled",
3920                         vdev->ndev->name);
3921
3922         if (vdev->config.addr_learn_en)
3923                 vxge_debug_init(VXGE_TRACE,
3924                         "%s: MAC Address learning enabled", vdev->ndev->name);
3925
3926         vxge_debug_init(VXGE_TRACE,
3927                 "%s: Rx doorbell mode enabled", vdev->ndev->name);
3928
3929         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3930                 if (!vxge_bVALn(vpath_mask, i, 1))
3931                         continue;
3932                 vxge_debug_ll_config(VXGE_TRACE,
3933                         "%s: MTU size - %d", vdev->ndev->name,
3934                         ((struct __vxge_hw_device  *)(vdev->devh))->
3935                                 config.vp_config[i].mtu);
3936                 vxge_debug_init(VXGE_TRACE,
3937                         "%s: VLAN tag stripping %s", vdev->ndev->name,
3938                         ((struct __vxge_hw_device  *)(vdev->devh))->
3939                                 config.vp_config[i].rpa_strip_vlan_tag
3940                         ? "Enabled" : "Disabled");
3941                 vxge_debug_init(VXGE_TRACE,
3942                         "%s: Ring blocks : %d", vdev->ndev->name,
3943                         ((struct __vxge_hw_device  *)(vdev->devh))->
3944                                 config.vp_config[i].ring.ring_blocks);
3945                 vxge_debug_init(VXGE_TRACE,
3946                         "%s: Fifo blocks : %d", vdev->ndev->name,
3947                         ((struct __vxge_hw_device  *)(vdev->devh))->
3948                                 config.vp_config[i].fifo.fifo_blocks);
3949                 vxge_debug_ll_config(VXGE_TRACE,
3950                         "%s: Max frags : %d", vdev->ndev->name,
3951                         ((struct __vxge_hw_device  *)(vdev->devh))->
3952                                 config.vp_config[i].fifo.max_frags);
3953                 break;
3954         }
3955 }
3956
3957 #ifdef CONFIG_PM
3958 /**
3959  * vxge_pm_suspend - vxge power management suspend entry point
3960  *
3961  */
3962 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
3963 {
3964         return -ENOSYS;
3965 }
3966 /**
3967  * vxge_pm_resume - vxge power management resume entry point
3968  *
3969  */
3970 static int vxge_pm_resume(struct pci_dev *pdev)
3971 {
3972         return -ENOSYS;
3973 }
3974
3975 #endif
3976
3977 /**
3978  * vxge_io_error_detected - called when PCI error is detected
3979  * @pdev: Pointer to PCI device
3980  * @state: The current pci connection state
3981  *
3982  * This function is called after a PCI bus error affecting
3983  * this device has been detected.
3984  */
3985 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
3986                                                 pci_channel_state_t state)
3987 {
3988         struct __vxge_hw_device *hldev =
3989                 (struct __vxge_hw_device  *)pci_get_drvdata(pdev);
3990         struct net_device *netdev = hldev->ndev;
3991
3992         netif_device_detach(netdev);
3993
3994         if (state == pci_channel_io_perm_failure)
3995                 return PCI_ERS_RESULT_DISCONNECT;
3996
3997         if (netif_running(netdev)) {
3998                 /* Bring down the card, while avoiding PCI I/O */
3999                 do_vxge_close(netdev, 0);
4000         }
4001
4002         pci_disable_device(pdev);
4003
4004         return PCI_ERS_RESULT_NEED_RESET;
4005 }
4006
4007 /**
4008  * vxge_io_slot_reset - called after the pci bus has been reset.
4009  * @pdev: Pointer to PCI device
4010  *
4011  * Restart the card from scratch, as if from a cold-boot.
4012  * At this point, the card has exprienced a hard reset,
4013  * followed by fixups by BIOS, and has its config space
4014  * set up identically to what it was at cold boot.
4015  */
4016 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
4017 {
4018         struct __vxge_hw_device *hldev =
4019                 (struct __vxge_hw_device  *)pci_get_drvdata(pdev);
4020         struct net_device *netdev = hldev->ndev;
4021
4022         struct vxgedev *vdev = netdev_priv(netdev);
4023
4024         if (pci_enable_device(pdev)) {
4025                 netdev_err(netdev, "Cannot re-enable device after reset\n");
4026                 return PCI_ERS_RESULT_DISCONNECT;
4027         }
4028
4029         pci_set_master(pdev);
4030         vxge_reset(vdev);
4031
4032         return PCI_ERS_RESULT_RECOVERED;
4033 }
4034
4035 /**
4036  * vxge_io_resume - called when traffic can start flowing again.
4037  * @pdev: Pointer to PCI device
4038  *
4039  * This callback is called when the error recovery driver tells
4040  * us that its OK to resume normal operation.
4041  */
4042 static void vxge_io_resume(struct pci_dev *pdev)
4043 {
4044         struct __vxge_hw_device *hldev =
4045                 (struct __vxge_hw_device  *)pci_get_drvdata(pdev);
4046         struct net_device *netdev = hldev->ndev;
4047
4048         if (netif_running(netdev)) {
4049                 if (vxge_open(netdev)) {
4050                         netdev_err(netdev,
4051                                    "Can't bring device back up after reset\n");
4052                         return;
4053                 }
4054         }
4055
4056         netif_device_attach(netdev);
4057 }
4058
4059 static inline u32 vxge_get_num_vfs(u64 function_mode)
4060 {
4061         u32 num_functions = 0;
4062
4063         switch (function_mode) {
4064         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4065         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4066                 num_functions = 8;
4067                 break;
4068         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4069                 num_functions = 1;
4070                 break;
4071         case VXGE_HW_FUNCTION_MODE_SRIOV:
4072         case VXGE_HW_FUNCTION_MODE_MRIOV:
4073         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4074                 num_functions = 17;
4075                 break;
4076         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4077                 num_functions = 4;
4078                 break;
4079         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4080                 num_functions = 2;
4081                 break;
4082         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4083                 num_functions = 8; /* TODO */
4084                 break;
4085         }
4086         return num_functions;
4087 }
4088
4089 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4090 {
4091         struct __vxge_hw_device *hldev = vdev->devh;
4092         u32 maj, min, bld, cmaj, cmin, cbld;
4093         enum vxge_hw_status status;
4094         const struct firmware *fw;
4095         int ret;
4096
4097         ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
4098         if (ret) {
4099                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4100                                 VXGE_DRIVER_NAME, fw_name);
4101                 goto out;
4102         }
4103
4104         /* Load the new firmware onto the adapter */
4105         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4106         if (status != VXGE_HW_OK) {
4107                 vxge_debug_init(VXGE_ERR,
4108                                 "%s: FW image download to adapter failed '%s'.",
4109                                 VXGE_DRIVER_NAME, fw_name);
4110                 ret = -EIO;
4111                 goto out;
4112         }
4113
4114         /* Read the version of the new firmware */
4115         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4116         if (status != VXGE_HW_OK) {
4117                 vxge_debug_init(VXGE_ERR,
4118                                 "%s: Upgrade read version failed '%s'.",
4119                                 VXGE_DRIVER_NAME, fw_name);
4120                 ret = -EIO;
4121                 goto out;
4122         }
4123
4124         cmaj = vdev->config.device_hw_info.fw_version.major;
4125         cmin = vdev->config.device_hw_info.fw_version.minor;
4126         cbld = vdev->config.device_hw_info.fw_version.build;
4127         /* It's possible the version in /lib/firmware is not the latest version.
4128          * If so, we could get into a loop of trying to upgrade to the latest
4129          * and flashing the older version.
4130          */
4131         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4132             !override) {
4133                 ret = -EINVAL;
4134                 goto out;
4135         }
4136
4137         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4138                maj, min, bld);
4139
4140         /* Flash the adapter with the new firmware */
4141         status = vxge_hw_flash_fw(hldev);
4142         if (status != VXGE_HW_OK) {
4143                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4144                                 VXGE_DRIVER_NAME, fw_name);
4145                 ret = -EIO;
4146                 goto out;
4147         }
4148
4149         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4150                "hard reset before using, thus requiring a system reboot or a "
4151                "hotplug event.\n");
4152
4153 out:
4154         return ret;
4155 }
4156
4157 static int vxge_probe_fw_update(struct vxgedev *vdev)
4158 {
4159         u32 maj, min, bld;
4160         int ret, gpxe = 0;
4161         char *fw_name;
4162
4163         maj = vdev->config.device_hw_info.fw_version.major;
4164         min = vdev->config.device_hw_info.fw_version.minor;
4165         bld = vdev->config.device_hw_info.fw_version.build;
4166
4167         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4168                 return 0;
4169
4170         /* Ignore the build number when determining if the current firmware is
4171          * "too new" to load the driver
4172          */
4173         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4174                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4175                                 "version, unable to load driver\n",
4176                                 VXGE_DRIVER_NAME);
4177                 return -EINVAL;
4178         }
4179
4180         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4181          * work with this driver.
4182          */
4183         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4184                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4185                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4186                 return -EINVAL;
4187         }
4188
4189         /* If file not specified, determine gPXE or not */
4190         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4191                 int i;
4192                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4193                         if (vdev->devh->eprom_versions[i]) {
4194                                 gpxe = 1;
4195                                 break;
4196                         }
4197         }
4198         if (gpxe)
4199                 fw_name = "vxge/X3fw-pxe.ncf";
4200         else
4201                 fw_name = "vxge/X3fw.ncf";
4202
4203         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4204         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4205          * probe, so ignore them
4206          */
4207         if (ret != -EINVAL && ret != -ENOENT)
4208                 return -EIO;
4209         else
4210                 ret = 0;
4211
4212         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4213             VXGE_FW_VER(maj, min, 0)) {
4214                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4215                                 " be used with this driver.\n"
4216                                 "Please get the latest version from "
4217                                 "ftp://ftp.s2io.com/pub/X3100-Drivers/FIRMWARE",
4218                                 VXGE_DRIVER_NAME, maj, min, bld);
4219                 return -EINVAL;
4220         }
4221
4222         return ret;
4223 }
4224
4225 /**
4226  * vxge_probe
4227  * @pdev : structure containing the PCI related information of the device.
4228  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4229  * Description:
4230  * This function is called when a new PCI device gets detected and initializes
4231  * it.
4232  * Return value:
4233  * returns 0 on success and negative on failure.
4234  *
4235  */
4236 static int __devinit
4237 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4238 {
4239         struct __vxge_hw_device *hldev;
4240         enum vxge_hw_status status;
4241         int ret;
4242         int high_dma = 0;
4243         u64 vpath_mask = 0;
4244         struct vxgedev *vdev;
4245         struct vxge_config *ll_config = NULL;
4246         struct vxge_hw_device_config *device_config = NULL;
4247         struct vxge_hw_device_attr attr;
4248         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4249         u8 *macaddr;
4250         struct vxge_mac_addrs *entry;
4251         static int bus = -1, device = -1;
4252         u32 host_type;
4253         u8 new_device = 0;
4254         enum vxge_hw_status is_privileged;
4255         u32 function_mode;
4256         u32 num_vfs = 0;
4257
4258         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4259         attr.pdev = pdev;
4260
4261         /* In SRIOV-17 mode, functions of the same adapter
4262          * can be deployed on different buses */
4263         if ((!pdev->is_virtfn) && ((bus != pdev->bus->number) ||
4264                 (device != PCI_SLOT(pdev->devfn))))
4265                 new_device = 1;
4266
4267         bus = pdev->bus->number;
4268         device = PCI_SLOT(pdev->devfn);
4269
4270         if (new_device) {
4271                 if (driver_config->config_dev_cnt &&
4272                    (driver_config->config_dev_cnt !=
4273                         driver_config->total_dev_cnt))
4274                         vxge_debug_init(VXGE_ERR,
4275                                 "%s: Configured %d of %d devices",
4276                                 VXGE_DRIVER_NAME,
4277                                 driver_config->config_dev_cnt,
4278                                 driver_config->total_dev_cnt);
4279                 driver_config->config_dev_cnt = 0;
4280                 driver_config->total_dev_cnt = 0;
4281         }
4282         /* Now making the CPU based no of vpath calculation
4283          * applicable for individual functions as well.
4284          */
4285         driver_config->g_no_cpus = 0;
4286         driver_config->vpath_per_dev = max_config_vpath;
4287
4288         driver_config->total_dev_cnt++;
4289         if (++driver_config->config_dev_cnt > max_config_dev) {
4290                 ret = 0;
4291                 goto _exit0;
4292         }
4293
4294         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4295                 GFP_KERNEL);
4296         if (!device_config) {
4297                 ret = -ENOMEM;
4298                 vxge_debug_init(VXGE_ERR,
4299                         "device_config : malloc failed %s %d",
4300                         __FILE__, __LINE__);
4301                 goto _exit0;
4302         }
4303
4304         ll_config = kzalloc(sizeof(*ll_config), GFP_KERNEL);
4305         if (!ll_config) {
4306                 ret = -ENOMEM;
4307                 vxge_debug_init(VXGE_ERR,
4308                         "ll_config : malloc failed %s %d",
4309                         __FILE__, __LINE__);
4310                 goto _exit0;
4311         }
4312         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4313         ll_config->intr_type = MSI_X;
4314         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4315         ll_config->rth_steering = RTH_STEERING;
4316
4317         /* get the default configuration parameters */
4318         vxge_hw_device_config_default_get(device_config);
4319
4320         /* initialize configuration parameters */
4321         vxge_device_config_init(device_config, &ll_config->intr_type);
4322
4323         ret = pci_enable_device(pdev);
4324         if (ret) {
4325                 vxge_debug_init(VXGE_ERR,
4326                         "%s : can not enable PCI device", __func__);
4327                 goto _exit0;
4328         }
4329
4330         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4331                 vxge_debug_ll_config(VXGE_TRACE,
4332                         "%s : using 64bit DMA", __func__);
4333
4334                 high_dma = 1;
4335
4336                 if (pci_set_consistent_dma_mask(pdev,
4337                                                 DMA_BIT_MASK(64))) {
4338                         vxge_debug_init(VXGE_ERR,
4339                                 "%s : unable to obtain 64bit DMA for "
4340                                 "consistent allocations", __func__);
4341                         ret = -ENOMEM;
4342                         goto _exit1;
4343                 }
4344         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4345                 vxge_debug_ll_config(VXGE_TRACE,
4346                         "%s : using 32bit DMA", __func__);
4347         } else {
4348                 ret = -ENOMEM;
4349                 goto _exit1;
4350         }
4351
4352         if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
4353                 vxge_debug_init(VXGE_ERR,
4354                         "%s : request regions failed", __func__);
4355                 ret = -ENODEV;
4356                 goto _exit1;
4357         }
4358
4359         pci_set_master(pdev);
4360
4361         attr.bar0 = pci_ioremap_bar(pdev, 0);
4362         if (!attr.bar0) {
4363                 vxge_debug_init(VXGE_ERR,
4364                         "%s : cannot remap io memory bar0", __func__);
4365                 ret = -ENODEV;
4366                 goto _exit2;
4367         }
4368         vxge_debug_ll_config(VXGE_TRACE,
4369                 "pci ioremap bar0: %p:0x%llx",
4370                 attr.bar0,
4371                 (unsigned long long)pci_resource_start(pdev, 0));
4372
4373         status = vxge_hw_device_hw_info_get(attr.bar0,
4374                         &ll_config->device_hw_info);
4375         if (status != VXGE_HW_OK) {
4376                 vxge_debug_init(VXGE_ERR,
4377                         "%s: Reading of hardware info failed."
4378                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4379                 ret = -EINVAL;
4380                 goto _exit3;
4381         }
4382
4383         vpath_mask = ll_config->device_hw_info.vpath_mask;
4384         if (vpath_mask == 0) {
4385                 vxge_debug_ll_config(VXGE_TRACE,
4386                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4387                 ret = -EINVAL;
4388                 goto _exit3;
4389         }
4390
4391         vxge_debug_ll_config(VXGE_TRACE,
4392                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4393                 (unsigned long long)vpath_mask);
4394
4395         function_mode = ll_config->device_hw_info.function_mode;
4396         host_type = ll_config->device_hw_info.host_type;
4397         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4398                 ll_config->device_hw_info.func_id);
4399
4400         /* Check how many vpaths are available */
4401         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4402                 if (!((vpath_mask) & vxge_mBIT(i)))
4403                         continue;
4404                 max_vpath_supported++;
4405         }
4406
4407         if (new_device)
4408                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4409
4410         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4411         if (is_sriov(function_mode) && (max_config_dev > 1) &&
4412                 (ll_config->intr_type != INTA) &&
4413                 (is_privileged == VXGE_HW_OK)) {
4414                 ret = pci_enable_sriov(pdev, ((max_config_dev - 1) < num_vfs)
4415                         ? (max_config_dev - 1) : num_vfs);
4416                 if (ret)
4417                         vxge_debug_ll_config(VXGE_ERR,
4418                                 "Failed in enabling SRIOV mode: %d\n", ret);
4419         }
4420
4421         /*
4422          * Configure vpaths and get driver configured number of vpaths
4423          * which is less than or equal to the maximum vpaths per function.
4424          */
4425         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4426         if (!no_of_vpath) {
4427                 vxge_debug_ll_config(VXGE_ERR,
4428                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4429                 ret = 0;
4430                 goto _exit3;
4431         }
4432
4433         /* Setting driver callbacks */
4434         attr.uld_callbacks.link_up = vxge_callback_link_up;
4435         attr.uld_callbacks.link_down = vxge_callback_link_down;
4436         attr.uld_callbacks.crit_err = vxge_callback_crit_err;
4437
4438         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4439         if (status != VXGE_HW_OK) {
4440                 vxge_debug_init(VXGE_ERR,
4441                         "Failed to initialize device (%d)", status);
4442                         ret = -EINVAL;
4443                         goto _exit3;
4444         }
4445
4446         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4447                         ll_config->device_hw_info.fw_version.minor,
4448                         ll_config->device_hw_info.fw_version.build) >=
4449             VXGE_EPROM_FW_VER) {
4450                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4451
4452                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4453                 if (status != VXGE_HW_OK) {
4454                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4455                                         VXGE_DRIVER_NAME);
4456                         /* This is a non-fatal error, continue */
4457                 }
4458
4459                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4460                         hldev->eprom_versions[i] = img[i].version;
4461                         if (!img[i].is_valid)
4462                                 break;
4463                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4464                                         "%d.%d.%d.%d\n", VXGE_DRIVER_NAME, i,
4465                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4466                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4467                                         VXGE_EPROM_IMG_FIX(img[i].version),
4468                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4469                 }
4470         }
4471
4472         /* if FCS stripping is not disabled in MAC fail driver load */
4473         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4474         if (status != VXGE_HW_OK) {
4475                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4476                                 " failing driver load", VXGE_DRIVER_NAME);
4477                 ret = -EINVAL;
4478                 goto _exit4;
4479         }
4480
4481         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4482
4483         /* set private device info */
4484         pci_set_drvdata(pdev, hldev);
4485
4486         ll_config->gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
4487         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4488         ll_config->addr_learn_en = addr_learn_en;
4489         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4490         ll_config->rth_hash_type_tcpipv4 = 1;
4491         ll_config->rth_hash_type_ipv4 = 0;
4492         ll_config->rth_hash_type_tcpipv6 = 0;
4493         ll_config->rth_hash_type_ipv6 = 0;
4494         ll_config->rth_hash_type_tcpipv6ex = 0;
4495         ll_config->rth_hash_type_ipv6ex = 0;
4496         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4497         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4498         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4499
4500         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4501                                    &vdev);
4502         if (ret) {
4503                 ret = -EINVAL;
4504                 goto _exit4;
4505         }
4506
4507         ret = vxge_probe_fw_update(vdev);
4508         if (ret)
4509                 goto _exit5;
4510
4511         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4512         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4513                 vxge_hw_device_trace_level_get(hldev));
4514
4515         /* set private HW device info */
4516         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4517         vdev->bar0 = attr.bar0;
4518         vdev->max_vpath_supported = max_vpath_supported;
4519         vdev->no_of_vpath = no_of_vpath;
4520
4521         /* Virtual Path count */
4522         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4523                 if (!vxge_bVALn(vpath_mask, i, 1))
4524                         continue;
4525                 if (j >= vdev->no_of_vpath)
4526                         break;
4527
4528                 vdev->vpaths[j].is_configured = 1;
4529                 vdev->vpaths[j].device_id = i;
4530                 vdev->vpaths[j].ring.driver_id = j;
4531                 vdev->vpaths[j].vdev = vdev;
4532                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4533                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4534                                 ll_config->device_hw_info.mac_addrs[i],
4535                                 ETH_ALEN);
4536
4537                 /* Initialize the mac address list header */
4538                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4539
4540                 vdev->vpaths[j].mac_addr_cnt = 0;
4541                 vdev->vpaths[j].mcast_addr_cnt = 0;
4542                 j++;
4543         }
4544         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4545         vdev->max_config_port = max_config_port;
4546
4547         vdev->vlan_tag_strip = vlan_tag_strip;
4548
4549         /* map the hashing selector table to the configured vpaths */
4550         for (i = 0; i < vdev->no_of_vpath; i++)
4551                 vdev->vpath_selector[i] = vpath_selector[i];
4552
4553         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4554
4555         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4556         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4557         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4558
4559         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4560                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4561
4562         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4563                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4564
4565         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4566                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4567
4568         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4569                 vdev->ndev->name, macaddr);
4570
4571         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4572                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4573
4574         vxge_debug_init(VXGE_TRACE,
4575                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4576                 ll_config->device_hw_info.fw_version.version,
4577                 ll_config->device_hw_info.fw_date.date);
4578
4579         if (new_device) {
4580                 switch (ll_config->device_hw_info.function_mode) {
4581                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4582                         vxge_debug_init(VXGE_TRACE,
4583                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4584                 break;
4585                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4586                         vxge_debug_init(VXGE_TRACE,
4587                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4588                 break;
4589                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4590                         vxge_debug_init(VXGE_TRACE,
4591                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4592                 break;
4593                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4594                         vxge_debug_init(VXGE_TRACE,
4595                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4596                 break;
4597                 }
4598         }
4599
4600         vxge_print_parm(vdev, vpath_mask);
4601
4602         /* Store the fw version for ethttool option */
4603         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4604         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4605         memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);
4606
4607         /* Copy the station mac address to the list */
4608         for (i = 0; i < vdev->no_of_vpath; i++) {
4609                 entry = (struct vxge_mac_addrs *)
4610                                 kzalloc(sizeof(struct vxge_mac_addrs),
4611                                         GFP_KERNEL);
4612                 if (NULL == entry) {
4613                         vxge_debug_init(VXGE_ERR,
4614                                 "%s: mac_addr_list : memory allocation failed",
4615                                 vdev->ndev->name);
4616                         ret = -EPERM;
4617                         goto _exit6;
4618                 }
4619                 macaddr = (u8 *)&entry->macaddr;
4620                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4621                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4622                 vdev->vpaths[i].mac_addr_cnt = 1;
4623         }
4624
4625         kfree(device_config);
4626
4627         /*
4628          * INTA is shared in multi-function mode. This is unlike the INTA
4629          * implementation in MR mode, where each VH has its own INTA message.
4630          * - INTA is masked (disabled) as long as at least one function sets
4631          * its TITAN_MASK_ALL_INT.ALARM bit.
4632          * - INTA is unmasked (enabled) when all enabled functions have cleared
4633          * their own TITAN_MASK_ALL_INT.ALARM bit.
4634          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4635          * Though this driver leaves the top level interrupts unmasked while
4636          * leaving the required module interrupt bits masked on exit, there
4637          * could be a rougue driver around that does not follow this procedure
4638          * resulting in a failure to generate interrupts. The following code is
4639          * present to prevent such a failure.
4640          */
4641
4642         if (ll_config->device_hw_info.function_mode ==
4643                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4644                 if (vdev->config.intr_type == INTA)
4645                         vxge_hw_device_unmask_all(hldev);
4646
4647         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4648                 vdev->ndev->name, __func__, __LINE__);
4649
4650         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4651         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4652                 vxge_hw_device_trace_level_get(hldev));
4653
4654         kfree(ll_config);
4655         return 0;
4656
4657 _exit6:
4658         for (i = 0; i < vdev->no_of_vpath; i++)
4659                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4660 _exit5:
4661         vxge_device_unregister(hldev);
4662 _exit4:
4663         pci_disable_sriov(pdev);
4664         vxge_hw_device_terminate(hldev);
4665 _exit3:
4666         iounmap(attr.bar0);
4667 _exit2:
4668         pci_release_regions(pdev);
4669 _exit1:
4670         pci_disable_device(pdev);
4671 _exit0:
4672         kfree(ll_config);
4673         kfree(device_config);
4674         driver_config->config_dev_cnt--;
4675         pci_set_drvdata(pdev, NULL);
4676         return ret;
4677 }
4678
4679 /**
4680  * vxge_rem_nic - Free the PCI device
4681  * @pdev: structure containing the PCI related information of the device.
4682  * Description: This function is called by the Pci subsystem to release a
4683  * PCI device and free up all resource held up by the device.
4684  */
4685 static void __devexit vxge_remove(struct pci_dev *pdev)
4686 {
4687         struct __vxge_hw_device *hldev;
4688         struct vxgedev *vdev = NULL;
4689         struct net_device *dev;
4690         int i = 0;
4691
4692         hldev = (struct __vxge_hw_device  *)pci_get_drvdata(pdev);
4693
4694         if (hldev == NULL)
4695                 return;
4696
4697         dev = hldev->ndev;
4698         vdev = netdev_priv(dev);
4699
4700         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4701
4702         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4703                         __func__);
4704         vxge_device_unregister(hldev);
4705
4706         for (i = 0; i < vdev->no_of_vpath; i++) {
4707                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4708                 vdev->vpaths[i].mcast_addr_cnt = 0;
4709                 vdev->vpaths[i].mac_addr_cnt = 0;
4710         }
4711
4712         kfree(vdev->vpaths);
4713
4714         iounmap(vdev->bar0);
4715
4716         pci_disable_sriov(pdev);
4717
4718         /* we are safe to free it now */
4719         free_netdev(dev);
4720
4721         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4722                         __func__, __LINE__);
4723
4724         vxge_hw_device_terminate(hldev);
4725
4726         pci_disable_device(pdev);
4727         pci_release_regions(pdev);
4728         pci_set_drvdata(pdev, NULL);
4729         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4730                              __LINE__);
4731 }
4732
4733 static struct pci_error_handlers vxge_err_handler = {
4734         .error_detected = vxge_io_error_detected,
4735         .slot_reset = vxge_io_slot_reset,
4736         .resume = vxge_io_resume,
4737 };
4738
4739 static struct pci_driver vxge_driver = {
4740         .name = VXGE_DRIVER_NAME,
4741         .id_table = vxge_id_table,
4742         .probe = vxge_probe,
4743         .remove = __devexit_p(vxge_remove),
4744 #ifdef CONFIG_PM
4745         .suspend = vxge_pm_suspend,
4746         .resume = vxge_pm_resume,
4747 #endif
4748         .err_handler = &vxge_err_handler,
4749 };
4750
4751 static int __init
4752 vxge_starter(void)
4753 {
4754         int ret = 0;
4755
4756         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4757         pr_info("Driver version: %s\n", DRV_VERSION);
4758
4759         verify_bandwidth();
4760
4761         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4762         if (!driver_config)
4763                 return -ENOMEM;
4764
4765         ret = pci_register_driver(&vxge_driver);
4766
4767         if (driver_config->config_dev_cnt &&
4768            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4769                 vxge_debug_init(VXGE_ERR,
4770                         "%s: Configured %d of %d devices",
4771                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4772                         driver_config->total_dev_cnt);
4773
4774         if (ret)
4775                 kfree(driver_config);
4776
4777         return ret;
4778 }
4779
4780 static void __exit
4781 vxge_closer(void)
4782 {
4783         pci_unregister_driver(&vxge_driver);
4784         kfree(driver_config);
4785 }
4786 module_init(vxge_starter);
4787 module_exit(vxge_closer);